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Doug Rabson's BSD port of the DRI.

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Brian Paul 2000-05-03 23:13:52 +00:00
parent 01836824d5
commit 778bec878e
29 changed files with 8862 additions and 0 deletions
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17
bsd-core/Makefile Normal file
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# $FreeBSD$
KMOD = drm
SRCS = init.c memory.c auth.c context.c drawable.c bufs.c \
lists.c lock.c ioctl.c fops.c vm.c dma.c sysctl.c
SRCS += tdfx_drv.c tdfx_context.c
SRCS += device_if.h bus_if.h pci_if.h
CFLAGS += ${DEBUG_FLAGS}
KERN = /usr/src/sys
@:
ln -sf /sys @
machine:
ln -sf /sys/i386/include machine
.include <bsd.kmod.mk>

592
bsd-core/drmP.h Normal file
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/* drmP.h -- Private header for Direct Rendering Manager -*- c -*-
* Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com
* Revised: Tue Oct 12 08:51:07 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drmP.h,v 1.58 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drmP.h,v 1.1 1999/09/25 14:37:59 dawes Exp $
*
*/
#ifndef _DRM_P_H_
#define _DRM_P_H_
#ifdef _KERNEL
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/stat.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/fcntl.h>
#include <sys/uio.h>
#include <sys/filio.h>
#include <sys/sysctl.h>
#include <sys/select.h>
#include "drm.h"
typedef u_int32_t atomic_t;
typedef u_int32_t cycles_t;
typedef u_int32_t spinlock_t;
#define atomic_set(p, v) (*(p) = (v))
#define atomic_read(p) (*(p))
#define atomic_inc(p) atomic_add_int(p, 1)
#define atomic_dec(p) atomic_subtract_int(p, 1)
#define atomic_sub(n, p) atomic_subtract_int(p, n)
/* Fake this */
static __inline u_int32_t
test_and_set_bit(int b, volatile u_int32_t *p)
{
u_int32_t m = 1<<b;
u_int32_t r = *p & m;
*p |= m;
return r;
}
#define clear_bit(b, p) atomic_clear_int(p, 1<<(b))
#define spldrm() spltty()
#define memset(p, v, s) bzero(p, s)
#define DRM_DEBUG_CODE 2 /* Include debugging code (if > 1, then
also include looping detection. */
#define DRM_DMA_HISTOGRAM 1 /* Make histogram of DMA latency. */
#define DRM_HASH_SIZE 16 /* Size of key hash table */
#define DRM_KERNEL_CONTEXT 0 /* Change drm_resctx if changed */
#define DRM_RESERVED_CONTEXTS 1 /* Change drm_resctx if changed */
#define DRM_LOOPING_LIMIT 5000000
#define DRM_BSZ 1024 /* Buffer size for /dev/drm? output */
#define DRM_TIME_SLICE (hz/20) /* Time slice for GLXContexts */
#define DRM_LOCK_SLICE 1 /* Time slice for lock, in jiffies */
#define DRM_FLAG_DEBUG 0x01
#define DRM_FLAG_NOCTX 0x02
#define DRM_MEM_DMA 0
#define DRM_MEM_SAREA 1
#define DRM_MEM_DRIVER 2
#define DRM_MEM_MAGIC 3
#define DRM_MEM_IOCTLS 4
#define DRM_MEM_MAPS 5
#define DRM_MEM_VMAS 6
#define DRM_MEM_BUFS 7
#define DRM_MEM_SEGS 8
#define DRM_MEM_PAGES 9
#define DRM_MEM_FILES 10
#define DRM_MEM_QUEUES 11
#define DRM_MEM_CMDS 12
#define DRM_MEM_MAPPINGS 13
#define DRM_MEM_BUFLISTS 14
/* Backward compatibility section */
#ifndef _PAGE_PWT
/* The name of _PAGE_WT was changed to
_PAGE_PWT in Linux 2.2.6 */
#define _PAGE_PWT _PAGE_WT
#endif
#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
#define _DRM_CAS(lock,old,new,__ret) \
do { \
int __dummy; /* Can't mark eax as clobbered */ \
__asm__ __volatile__( \
"lock ; cmpxchg %4,%1\n\t" \
"setnz %0" \
: "=d" (__ret), \
"=m" (__drm_dummy_lock(lock)), \
"=a" (__dummy) \
: "2" (old), \
"r" (new)); \
} while (0)
/* Macros to make printk easier */
#define DRM_ERROR(fmt, arg...) \
printf("error: " "[" DRM_NAME ":" __FUNCTION__ "] *ERROR* " fmt , ##arg)
#define DRM_MEM_ERROR(area, fmt, arg...) \
printf("error: " "[" DRM_NAME ":" __FUNCTION__ ":%s] *ERROR* " fmt , \
drm_mem_stats[area].name , ##arg)
#define DRM_INFO(fmt, arg...) printf("info: " "[" DRM_NAME "] " fmt , ##arg)
#if DRM_DEBUG_CODE
#define DRM_DEBUG(fmt, arg...) \
do { \
if (drm_flags&DRM_FLAG_DEBUG) \
printf("[" DRM_NAME ":" __FUNCTION__ "] " fmt , \
##arg); \
} while (0)
#else
#define DRM_DEBUG(fmt, arg...) do { } while (0)
#endif
#define DRM_PROC_LIMIT (PAGE_SIZE-80)
#define DRM_SYSCTL_PRINT(fmt, arg...) \
snprintf(buf, sizeof(buf), fmt, ##arg); \
error = SYSCTL_OUT(req, buf, strlen(buf)); \
if (error) return error;
#define DRM_SYSCTL_PRINT_RET(ret, fmt, arg...) \
snprintf(buf, sizeof(buf), fmt, ##arg); \
error = SYSCTL_OUT(req, buf, strlen(buf)); \
if (error) { ret; return error; }
/* Internal types and structures */
#define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#define DRM_MIN(a,b) ((a)<(b)?(a):(b))
#define DRM_MAX(a,b) ((a)>(b)?(a):(b))
#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
#define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
typedef struct drm_ioctl_desc {
d_ioctl_t *func;
int auth_needed;
int root_only;
} drm_ioctl_desc_t;
typedef struct drm_devstate {
pid_t owner; /* X server pid holding x_lock */
} drm_devstate_t;
typedef struct drm_magic_entry {
drm_magic_t magic;
struct drm_file *priv;
struct drm_magic_entry *next;
} drm_magic_entry_t;
typedef struct drm_magic_head {
struct drm_magic_entry *head;
struct drm_magic_entry *tail;
} drm_magic_head_t;
typedef struct drm_vma_entry {
struct vm_area_struct *vma;
struct drm_vma_entry *next;
pid_t pid;
} drm_vma_entry_t;
typedef struct drm_buf {
int idx; /* Index into master buflist */
int total; /* Buffer size */
int order; /* log-base-2(total) */
int used; /* Amount of buffer in use (for DMA) */
unsigned long offset; /* Byte offset (used internally) */
void *address; /* Address of buffer */
struct drm_buf *next; /* Kernel-only: used for free list */
__volatile__ int waiting; /* On kernel DMA queue */
__volatile__ int pending; /* On hardware DMA queue */
int dma_wait; /* Processes waiting */
pid_t pid; /* PID of holding process */
int context; /* Kernel queue for this buffer */
int while_locked;/* Dispatch this buffer while locked */
enum {
DRM_LIST_NONE = 0,
DRM_LIST_FREE = 1,
DRM_LIST_WAIT = 2,
DRM_LIST_PEND = 3,
DRM_LIST_PRIO = 4,
DRM_LIST_RECLAIM = 5
} list; /* Which list we're on */
#if DRM_DMA_HISTOGRAM
struct timespec time_queued; /* Queued to kernel DMA queue */
struct timespec time_dispatched; /* Dispatched to hardware */
struct timespec time_completed; /* Completed by hardware */
struct timespec time_freed; /* Back on freelist */
#endif
} drm_buf_t;
#if DRM_DMA_HISTOGRAM
#define DRM_DMA_HISTOGRAM_SLOTS 9
#define DRM_DMA_HISTOGRAM_INITIAL 10
#define DRM_DMA_HISTOGRAM_NEXT(current) ((current)*10)
typedef struct drm_histogram {
atomic_t total;
atomic_t queued_to_dispatched[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t dispatched_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t completed_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t queued_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t queued_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t dma[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t schedule[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t ctx[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t lacq[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t lhld[DRM_DMA_HISTOGRAM_SLOTS];
} drm_histogram_t;
#endif
/* bufs is one longer than it has to be */
typedef struct drm_waitlist {
int count; /* Number of possible buffers */
drm_buf_t **bufs; /* List of pointers to buffers */
drm_buf_t **rp; /* Read pointer */
drm_buf_t **wp; /* Write pointer */
drm_buf_t **end; /* End pointer */
spinlock_t read_lock;
spinlock_t write_lock;
} drm_waitlist_t;
typedef struct drm_freelist {
int initialized; /* Freelist in use */
atomic_t count; /* Number of free buffers */
drm_buf_t *next; /* End pointer */
int waiting; /* Processes waiting on free bufs */
int low_mark; /* Low water mark */
int high_mark; /* High water mark */
atomic_t wfh; /* If waiting for high mark */
} drm_freelist_t;
typedef struct drm_buf_entry {
int buf_size;
int buf_count;
drm_buf_t *buflist;
int seg_count;
int page_order;
unsigned long *seglist;
drm_freelist_t freelist;
} drm_buf_entry_t;
typedef struct drm_hw_lock {
__volatile__ unsigned int lock;
char padding[60]; /* Pad to cache line */
} drm_hw_lock_t;
typedef TAILQ_HEAD(drm_file_list, drm_file) drm_file_list_t;
typedef struct drm_file {
TAILQ_ENTRY(drm_file) link;
int authenticated;
int minor;
pid_t pid;
uid_t uid;
int refs;
drm_magic_t magic;
unsigned long ioctl_count;
struct drm_device *devXX;
} drm_file_t;
typedef struct drm_queue {
atomic_t use_count; /* Outstanding uses (+1) */
atomic_t finalization; /* Finalization in progress */
atomic_t block_count; /* Count of processes waiting */
atomic_t block_read; /* Queue blocked for reads */
int read_queue; /* Processes waiting on block_read */
atomic_t block_write; /* Queue blocked for writes */
int write_queue; /* Processes waiting on block_write */
atomic_t total_queued; /* Total queued statistic */
atomic_t total_flushed;/* Total flushes statistic */
atomic_t total_locks; /* Total locks statistics */
drm_ctx_flags_t flags; /* Context preserving and 2D-only */
drm_waitlist_t waitlist; /* Pending buffers */
int flush_queue; /* Processes waiting until flush */
} drm_queue_t;
typedef struct drm_lock_data {
drm_hw_lock_t *hw_lock; /* Hardware lock */
pid_t pid; /* PID of lock holder (0=kernel) */
int lock_queue; /* Queue of blocked processes */
unsigned long lock_time; /* Time of last lock in jiffies */
} drm_lock_data_t;
typedef struct drm_device_dma {
/* Performance Counters */
atomic_t total_prio; /* Total DRM_DMA_PRIORITY */
atomic_t total_bytes; /* Total bytes DMA'd */
atomic_t total_dmas; /* Total DMA buffers dispatched */
atomic_t total_missed_dma; /* Missed drm_do_dma */
atomic_t total_missed_lock; /* Missed lock in drm_do_dma */
atomic_t total_missed_free; /* Missed drm_free_this_buffer */
atomic_t total_missed_sched;/* Missed drm_dma_schedule */
atomic_t total_tried; /* Tried next_buffer */
atomic_t total_hit; /* Sent next_buffer */
atomic_t total_lost; /* Lost interrupt */
drm_buf_entry_t bufs[DRM_MAX_ORDER+1];
int buf_count;
drm_buf_t **buflist; /* Vector of pointers info bufs */
int seg_count;
int page_count;
vm_offset_t *pagelist;
unsigned long byte_count;
/* DMA support */
drm_buf_t *this_buffer; /* Buffer being sent */
drm_buf_t *next_buffer; /* Selected buffer to send */
drm_queue_t *next_queue; /* Queue from which buffer selected*/
int waiting; /* Processes waiting on free bufs */
} drm_device_dma_t;
typedef struct drm_device {
const char *name; /* Simple driver name */
char *unique; /* Unique identifier: e.g., busid */
int unique_len; /* Length of unique field */
dev_t device; /* Device number for mknod */
char *devname; /* For /proc/interrupts */
int blocked; /* Blocked due to VC switch? */
int flags; /* Flags to open(2) */
int writable; /* Opened with FWRITE */
struct proc_dir_entry *root; /* Root for this device's entries */
/* Locks */
struct simplelock count_lock; /* For inuse, open_count, buf_use */
struct lock dev_lock; /* For others */
/* Usage Counters */
int open_count; /* Outstanding files open */
atomic_t ioctl_count; /* Outstanding IOCTLs pending */
atomic_t vma_count; /* Outstanding vma areas open */
int buf_use; /* Buffers in use -- cannot alloc */
atomic_t buf_alloc; /* Buffer allocation in progress */
/* Performance Counters */
atomic_t total_open;
atomic_t total_close;
atomic_t total_ioctl;
atomic_t total_irq; /* Total interruptions */
atomic_t total_ctx; /* Total context switches */
atomic_t total_locks;
atomic_t total_unlocks;
atomic_t total_contends;
atomic_t total_sleeps;
/* Authentication */
drm_file_list_t files;
drm_magic_head_t magiclist[DRM_HASH_SIZE];
/* Memory management */
drm_map_t **maplist; /* Vector of pointers to regions */
int map_count; /* Number of mappable regions */
drm_vma_entry_t *vmalist; /* List of vmas (for debugging) */
drm_lock_data_t lock; /* Information on hardware lock */
/* DMA queues (contexts) */
int queue_count; /* Number of active DMA queues */
int queue_reserved; /* Number of reserved DMA queues */
int queue_slots; /* Actual length of queuelist */
drm_queue_t **queuelist; /* Vector of pointers to DMA queues */
drm_device_dma_t *dma; /* Optional pointer for DMA support */
/* Context support */
int irq; /* Interrupt used by board */
__volatile__ int context_flag; /* Context swapping flag */
__volatile__ int interrupt_flag;/* Interruption handler flag */
__volatile__ int dma_flag; /* DMA dispatch flag */
struct callout timer; /* Timer for delaying ctx switch */
int context_wait; /* Processes waiting on ctx switch */
int last_checked; /* Last context checked for DMA */
int last_context; /* Last current context */
int last_switch; /* Time at last context switch */
#if 0
struct tq_struct tq;
#endif
struct timespec ctx_start;
struct timespec lck_start;
#if DRM_DMA_HISTOGRAM
drm_histogram_t histo;
#endif
/* Callback to X server for context switch
and for heavy-handed reset. */
char buf[DRM_BSZ]; /* Output buffer */
char *buf_rp; /* Read pointer */
char *buf_wp; /* Write pointer */
char *buf_end; /* End pointer */
struct sigio *buf_sigio; /* Processes waiting for SIGIO */
struct selinfo buf_sel; /* Workspace for select/poll */
int buf_readers; /* Processes waiting to read */
int buf_writers; /* Processes waiting to ctx switch */
int buf_selecting; /* True if poll sleeper */
/* Sysctl support */
struct drm_sysctl_info *sysctl;
} drm_device_t;
/* Internal function definitions */
/* Misc. support (init.c) */
extern int drm_flags;
extern void drm_parse_options(char *s);
/* Device support (fops.c) */
extern drm_file_t *drm_find_file_by_proc(drm_device_t *dev, struct proc *p);
extern int drm_open_helper(dev_t kdev, int flags, int fmt, struct proc *p,
drm_device_t *dev);
extern d_close_t drm_close;
extern d_read_t drm_read;
extern d_write_t drm_write;
extern d_poll_t drm_poll;
extern int drm_fsetown(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p);
extern int drm_fgetown(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p);
extern int drm_write_string(drm_device_t *dev, const char *s);
#if 0
/* Mapping support (vm.c) */
extern unsigned long drm_vm_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern unsigned long drm_vm_shm_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern unsigned long drm_vm_dma_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern void drm_vm_open(struct vm_area_struct *vma);
extern void drm_vm_close(struct vm_area_struct *vma);
extern int drm_mmap_dma(struct file *filp,
struct vm_area_struct *vma);
#endif
extern d_mmap_t drm_mmap;
/* Proc support (proc.c) */
extern int drm_sysctl_init(drm_device_t *dev);
extern int drm_sysctl_cleanup(drm_device_t *dev);
/* Memory management support (memory.c) */
extern void drm_mem_init(void);
extern int drm_mem_info SYSCTL_HANDLER_ARGS;
extern void *drm_alloc(size_t size, int area);
extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size,
int area);
extern char *drm_strdup(const char *s, int area);
extern void drm_strfree(char *s, int area);
extern void drm_free(void *pt, size_t size, int area);
extern unsigned long drm_alloc_pages(int order, int area);
extern void drm_free_pages(unsigned long address, int order,
int area);
extern void *drm_ioremap(unsigned long offset, unsigned long size);
extern void drm_ioremapfree(void *pt, unsigned long size);
/* Buffer management support (bufs.c) */
extern int drm_order(unsigned long size);
extern d_ioctl_t drm_addmap;
extern d_ioctl_t drm_addbufs;
extern d_ioctl_t drm_infobufs;
extern d_ioctl_t drm_markbufs;
extern d_ioctl_t drm_freebufs;
extern d_ioctl_t drm_mapbufs;
/* Buffer list management support (lists.c) */
extern int drm_waitlist_create(drm_waitlist_t *bl, int count);
extern int drm_waitlist_destroy(drm_waitlist_t *bl);
extern int drm_waitlist_put(drm_waitlist_t *bl, drm_buf_t *buf);
extern drm_buf_t *drm_waitlist_get(drm_waitlist_t *bl);
extern int drm_freelist_create(drm_freelist_t *bl, int count);
extern int drm_freelist_destroy(drm_freelist_t *bl);
extern int drm_freelist_put(drm_device_t *dev, drm_freelist_t *bl,
drm_buf_t *buf);
extern drm_buf_t *drm_freelist_get(drm_freelist_t *bl, int block);
/* DMA support (gen_dma.c) */
extern void drm_dma_setup(drm_device_t *dev);
extern void drm_dma_takedown(drm_device_t *dev);
extern void drm_free_buffer(drm_device_t *dev, drm_buf_t *buf);
extern void drm_reclaim_buffers(drm_device_t *dev, pid_t pid);
extern int drm_context_switch(drm_device_t *dev, int old, int new);
extern int drm_context_switch_complete(drm_device_t *dev, int new);
extern void drm_wakeup(drm_device_t *dev, drm_buf_t *buf);
extern void drm_clear_next_buffer(drm_device_t *dev);
extern int drm_select_queue(drm_device_t *dev,
void (*wrapper)(void *));
extern int drm_dma_enqueue(drm_device_t *dev, drm_dma_t *dma);
extern int drm_dma_get_buffers(drm_device_t *dev, drm_dma_t *dma);
#if DRM_DMA_HISTOGRAM
extern int drm_histogram_slot(struct timespec *ts);
extern void drm_histogram_compute(drm_device_t *dev, drm_buf_t *buf);
#endif
/* Misc. IOCTL support (ioctl.c) */
extern d_ioctl_t drm_irq_busid;
extern d_ioctl_t drm_getunique;
extern d_ioctl_t drm_setunique;
/* Context IOCTL support (context.c) */
extern d_ioctl_t drm_resctx;
extern d_ioctl_t drm_addctx;
extern d_ioctl_t drm_modctx;
extern d_ioctl_t drm_getctx;
extern d_ioctl_t drm_switchctx;
extern d_ioctl_t drm_newctx;
extern d_ioctl_t drm_rmctx;
/* Drawable IOCTL support (drawable.c) */
extern d_ioctl_t drm_adddraw;
extern d_ioctl_t drm_rmdraw;
/* Authentication IOCTL support (auth.c) */
extern int drm_add_magic(drm_device_t *dev, drm_file_t *priv,
drm_magic_t magic);
extern int drm_remove_magic(drm_device_t *dev, drm_magic_t magic);
extern d_ioctl_t drm_getmagic;
extern d_ioctl_t drm_authmagic;
/* Locking IOCTL support (lock.c) */
extern d_ioctl_t drm_block;
extern d_ioctl_t drm_unblock;
extern int drm_lock_take(__volatile__ unsigned int *lock,
unsigned int context);
extern int drm_lock_transfer(drm_device_t *dev,
__volatile__ unsigned int *lock,
unsigned int context);
extern int drm_lock_free(drm_device_t *dev,
__volatile__ unsigned int *lock,
unsigned int context);
extern d_ioctl_t drm_finish;
extern int drm_flush_unblock(drm_device_t *dev, int context,
drm_lock_flags_t flags);
extern int drm_flush_block_and_flush(drm_device_t *dev, int context,
drm_lock_flags_t flags);
#endif
#endif

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/* tdfx.c -- tdfx driver -*- c -*-
* Created: Thu Oct 7 10:38:32 1999 by faith@precisioninsight.com
* Revised: Tue Oct 12 08:51:35 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI$
* $XFree86$
*
*/
#include "drmP.h"
#include "tdfx_drv.h"
#define TDFX_NAME "tdfx"
#define TDFX_DESC "tdfx"
#define TDFX_DATE "19991009"
#define TDFX_MAJOR 0
#define TDFX_MINOR 0
#define TDFX_PATCHLEVEL 1
static drm_device_t tdfx_device;
drm_ctx_t tdfx_res_ctx;
#define CDEV_MAJOR 201
/* tdfx_drv.c */
static d_open_t tdfx_open;
static d_close_t tdfx_close;
static d_ioctl_t tdfx_version;
static d_ioctl_t tdfx_ioctl;
static d_ioctl_t tdfx_lock;
static d_ioctl_t tdfx_unlock;
static struct cdevsw tdfx_cdevsw = {
/* open */ tdfx_open,
/* close */ tdfx_close,
/* read */ drm_read,
/* write */ drm_write,
/* ioctl */ tdfx_ioctl,
/* poll */ drm_poll,
/* mmap */ drm_mmap,
/* strategy */ nostrategy,
/* name */ "tdfx",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_TTY | D_TRACKCLOSE,
/* bmaj */ -1
};
static drm_ioctl_desc_t tdfx_ioctls[] = {
[DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { tdfx_version, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { drm_getunique, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { drm_getmagic, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_busid, 0, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_block, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_unblock, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { drm_authmagic, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { drm_addmap, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { tdfx_addctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { tdfx_rmctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { tdfx_modctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { tdfx_getctx, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { tdfx_switchctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { tdfx_newctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { tdfx_resctx, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { drm_adddraw, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { drm_rmdraw, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { tdfx_lock, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { tdfx_unlock, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_finish, 1, 0 },
};
#define TDFX_IOCTL_COUNT DRM_ARRAY_SIZE(tdfx_ioctls)
static int
tdfx_setup(drm_device_t *dev)
{
int i;
atomic_set(&dev->ioctl_count, 0);
atomic_set(&dev->vma_count, 0);
dev->buf_use = 0;
atomic_set(&dev->buf_alloc, 0);
atomic_set(&dev->total_open, 0);
atomic_set(&dev->total_close, 0);
atomic_set(&dev->total_ioctl, 0);
atomic_set(&dev->total_irq, 0);
atomic_set(&dev->total_ctx, 0);
atomic_set(&dev->total_locks, 0);
atomic_set(&dev->total_unlocks, 0);
atomic_set(&dev->total_contends, 0);
atomic_set(&dev->total_sleeps, 0);
for (i = 0; i < DRM_HASH_SIZE; i++) {
dev->magiclist[i].head = NULL;
dev->magiclist[i].tail = NULL;
}
dev->maplist = NULL;
dev->map_count = 0;
dev->vmalist = NULL;
dev->lock.hw_lock = NULL;
dev->lock.lock_queue = 0;
dev->queue_count = 0;
dev->queue_reserved = 0;
dev->queue_slots = 0;
dev->queuelist = NULL;
dev->irq = 0;
dev->context_flag = 0;
dev->interrupt_flag = 0;
dev->dma = 0;
dev->dma_flag = 0;
dev->last_context = 0;
dev->last_switch = 0;
dev->last_checked = 0;
callout_init(&dev->timer);
dev->context_wait = 0;
timespecclear(&dev->ctx_start);
timespecclear(&dev->lck_start);
dev->buf_rp = dev->buf;
dev->buf_wp = dev->buf;
dev->buf_end = dev->buf + DRM_BSZ;
bzero(&dev->buf_sel, sizeof dev->buf_sel);
dev->buf_sigio = NULL;
dev->buf_readers = 0;
dev->buf_writers = 0;
dev->buf_selecting = 0;
tdfx_res_ctx.handle=-1;
DRM_DEBUG("\n");
/* The kernel's context could be created here, but is now created
in drm_dma_enqueue. This is more resource-efficient for
hardware that does not do DMA, but may mean that
drm_select_queue fails between the time the interrupt is
initialized and the time the queues are initialized. */
return 0;
}
static int
tdfx_takedown(drm_device_t *dev)
{
int i;
drm_magic_entry_t *pt, *next;
drm_map_t *map;
drm_vma_entry_t *vma, *vma_next;
DRM_DEBUG("\n");
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
callout_stop(&dev->timer);
if (dev->devname) {
drm_free(dev->devname, strlen(dev->devname)+1, DRM_MEM_DRIVER);
dev->devname = NULL;
}
if (dev->unique) {
drm_free(dev->unique, strlen(dev->unique)+1, DRM_MEM_DRIVER);
dev->unique = NULL;
dev->unique_len = 0;
}
/* Clear pid list */
for (i = 0; i < DRM_HASH_SIZE; i++) {
for (pt = dev->magiclist[i].head; pt; pt = next) {
next = pt->next;
drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
}
dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
}
/* Clear vma list (only built for debugging) */
if (dev->vmalist) {
for (vma = dev->vmalist; vma; vma = vma_next) {
vma_next = vma->next;
drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
}
dev->vmalist = NULL;
}
/* Clear map area and mtrr information */
if (dev->maplist) {
for (i = 0; i < dev->map_count; i++) {
map = dev->maplist[i];
switch (map->type) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
#ifdef CONFIG_MTRR
if (map->mtrr >= 0) {
int retcode;
retcode = mtrr_del(map->mtrr,
map->offset,
map->size);
DRM_DEBUG("mtrr_del = %d\n", retcode);
}
#endif
drm_ioremapfree(map->handle, map->size);
break;
case _DRM_SHM:
drm_free_pages((unsigned long)map->handle,
drm_order(map->size)
- PAGE_SHIFT,
DRM_MEM_SAREA);
break;
}
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
}
drm_free(dev->maplist,
dev->map_count * sizeof(*dev->maplist),
DRM_MEM_MAPS);
dev->maplist = NULL;
dev->map_count = 0;
}
if (dev->lock.hw_lock) {
dev->lock.hw_lock = NULL; /* SHM removed */
dev->lock.pid = 0;
#if 0
wake_up_interruptible(&dev->lock.lock_queue);
#endif
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return 0;
}
/* tdfx_init is called via SYSINIT at module load time, */
static int
tdfx_init(void *arg)
{
drm_device_t *dev = &tdfx_device;
DRM_DEBUG("\n");
memset((void *)dev, 0, sizeof(*dev));
simple_lock_init(&dev->count_lock);
lockinit(&dev->dev_lock, PZERO, "drmlk", 0, 0);
#if 0
drm_parse_options(tdfx);
#endif
dev->device = make_dev(&tdfx_cdevsw,
/* gamma_misc.minor */ 0,
DRM_DEV_UID,
DRM_DEV_GID,
DRM_DEV_MODE,
TDFX_NAME);
dev->name = TDFX_NAME;
drm_mem_init();
drm_sysctl_init(dev);
TAILQ_INIT(&dev->files);
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
TDFX_NAME,
TDFX_MAJOR,
TDFX_MINOR,
TDFX_PATCHLEVEL,
TDFX_DATE,
0 /* tdfx_misc.minor */);
return 0;
}
SYSINIT(tdfx_init, SI_SUB_DRIVERS, SI_ORDER_ANY, tdfx_init, 0);
/* tdfx_cleanup is called via SYSUNINIT at module unload time. */
static void
tdfx_cleanup(void *arg)
{
drm_device_t *dev = &tdfx_device;
DRM_DEBUG("\n");
drm_sysctl_cleanup(dev);
destroy_dev(dev->device);
DRM_INFO("Module unloaded\n");
tdfx_takedown(dev);
}
SYSUNINIT(tdfx_init, SI_SUB_DRIVERS, SI_ORDER_ANY, tdfx_cleanup, 0);
static int
tdfx_version(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_version_t version;
int len;
version = *(drm_version_t *) data;
#define DRM_COPY(name,value) \
len = strlen(value); \
if (len > name##_len) len = name##_len; \
name##_len = strlen(value); \
if (len && name) { \
int error = copyout(value, name, len); \
if (error) return error; \
}
version.version_major = TDFX_MAJOR;
version.version_minor = TDFX_MINOR;
version.version_patchlevel = TDFX_PATCHLEVEL;
DRM_COPY(version.name, TDFX_NAME);
DRM_COPY(version.date, TDFX_DATE);
DRM_COPY(version.desc, TDFX_DESC);
*(drm_version_t *) data = version;
return 0;
}
static int
tdfx_open(dev_t kdev, int flags, int fmt, struct proc *p)
{
drm_device_t *dev = &tdfx_device;
int retcode = 0;
DRM_DEBUG("open_count = %d\n", dev->open_count);
if (!(retcode = drm_open_helper(kdev, flags, fmt, p, dev))) {
atomic_inc(&dev->total_open);
simple_lock(&dev->count_lock);
if (!dev->open_count++) {
simple_unlock(&dev->count_lock);
return tdfx_setup(dev);
}
simple_unlock(&dev->count_lock);
}
return retcode;
}
static int
tdfx_close(dev_t kdev, int flags, int fmt, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
int retcode = 0;
DRM_DEBUG("open_count = %d\n", dev->open_count);
if (!(retcode = drm_close(kdev, flags, fmt, p))) {
atomic_inc(&dev->total_close);
simple_lock(&dev->count_lock);
if (!--dev->open_count) {
if (atomic_read(&dev->ioctl_count) || dev->blocked) {
DRM_ERROR("Device busy: %d %d\n",
atomic_read(&dev->ioctl_count),
dev->blocked);
simple_unlock(&dev->count_lock);
return EBUSY;
}
simple_unlock(&dev->count_lock);
return tdfx_takedown(dev);
}
simple_unlock(&dev->count_lock);
}
return retcode;
}
/* tdfx_ioctl is called whenever a process performs an ioctl on /dev/drm. */
static int
tdfx_ioctl(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
int nr = DRM_IOCTL_NR(cmd);
drm_device_t *dev = kdev->si_drv1;
drm_file_t *priv;
int retcode = 0;
drm_ioctl_desc_t *ioctl;
d_ioctl_t *func;
DRM_DEBUG("dev=%p\n", dev);
priv = drm_find_file_by_proc(dev, p);
if (!priv) {
DRM_DEBUG("can't find authenticator\n");
return EINVAL;
}
atomic_inc(&dev->ioctl_count);
atomic_inc(&dev->total_ioctl);
++priv->ioctl_count;
DRM_DEBUG("pid = %d, cmd = 0x%02lx, nr = 0x%02x, auth = %d\n",
p->p_pid, cmd, nr, priv->authenticated);
switch (cmd) {
case FIONBIO:
atomic_dec(&dev->ioctl_count);
return 0;
case FIOASYNC:
atomic_dec(&dev->ioctl_count);
dev->flags |= FASYNC;
return 0;
case FIOSETOWN:
atomic_dec(&dev->ioctl_count);
return fsetown(*(int *)data, &dev->buf_sigio);
case FIOGETOWN:
atomic_dec(&dev->ioctl_count);
*(int *) data = fgetown(dev->buf_sigio);
return 0;
}
if (nr >= TDFX_IOCTL_COUNT) {
retcode = EINVAL;
} else {
ioctl = &tdfx_ioctls[nr];
func = ioctl->func;
if (!func) {
DRM_DEBUG("no function\n");
retcode = EINVAL;
} else if ((ioctl->root_only && suser(p))
|| (ioctl->auth_needed && !priv->authenticated)) {
retcode = EACCES;
} else {
retcode = (func)(kdev, cmd, data, flags, p);
}
}
atomic_dec(&dev->ioctl_count);
return retcode;
}
static int
tdfx_lock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
int ret = 0;
drm_lock_t lock;
#if DRM_DMA_HISTOGRAM
getnanotime(&dev->lck_start);
#endif
lock = *(drm_lock_t *) data;
if (lock.context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
p->p_pid, lock.context);
return EINVAL;
}
DRM_DEBUG("%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
lock.context, p->p_pid, dev->lock.hw_lock->lock,
lock.flags);
#if 0
/* dev->queue_count == 0 right now for
tdfx. FIXME? */
if (lock.context < 0 || lock.context >= dev->queue_count)
return EINVAL;
#endif
if (!ret) {
#if 0
if (_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)
!= lock.context) {
long j = ticks - dev->lock.lock_time;
if (lock.context == tdfx_res_ctx.handle &&
j >= 0 && j < DRM_LOCK_SLICE) {
/* Can't take lock if we just had it and
there is contention. */
DRM_DEBUG("%d (pid %d) delayed j=%d dev=%d ticks=%d\n",
lock.context, p->p_pid, j,
dev->lock.lock_time, ticks);
ret = tsleep(&never, PZERO|PCATCH, "drmlk1",
DRM_LOCK_SLICE - j);
if (ret)
return ret;
DRM_DEBUG("ticks=%d\n", ticks);
}
}
#endif
for (;;) {
if (!dev->lock.hw_lock) {
/* Device has been unregistered */
ret = EINTR;
break;
}
if (drm_lock_take(&dev->lock.hw_lock->lock,
lock.context)) {
dev->lock.pid = p->p_pid;
dev->lock.lock_time = ticks;
atomic_inc(&dev->total_locks);
break; /* Got lock */
}
/* Contention */
atomic_inc(&dev->total_sleeps);
ret = tsleep(&dev->lock.lock_queue,
PZERO|PCATCH,
"drmlk2",
0);
}
}
#if 0
if (!ret && dev->last_context != lock.context &&
lock.context != tdfx_res_ctx.handle &&
dev->last_context != tdfx_res_ctx.handle) {
add_wait_queue(&dev->context_wait, &entry);
current->state = TASK_INTERRUPTIBLE;
/* PRE: dev->last_context != lock.context */
tdfx_context_switch(dev, dev->last_context, lock.context);
/* POST: we will wait for the context
switch and will dispatch on a later call
when dev->last_context == lock.context
NOTE WE HOLD THE LOCK THROUGHOUT THIS
TIME! */
current->policy |= SCHED_YIELD;
schedule();
current->state = TASK_RUNNING;
remove_wait_queue(&dev->context_wait, &entry);
if (signal_pending(current)) {
ret = EINTR;
} else if (dev->last_context != lock.context) {
DRM_ERROR("Context mismatch: %d %d\n",
dev->last_context, lock.context);
}
}
#endif
if (!ret) {
if (lock.flags & _DRM_LOCK_READY) {
/* Wait for space in DMA/FIFO */
}
if (lock.flags & _DRM_LOCK_QUIESCENT) {
/* Make hardware quiescent */
#if 0
tdfx_quiescent(dev);
#endif
}
}
#if 0
DRM_ERROR("pid = %5d, old counter = %5ld\n",
p->p_pid, current->counter);
#endif
#if 0
while (current->counter > 25)
current->counter >>= 1; /* decrease time slice */
DRM_ERROR("pid = %5d, new counter = %5ld\n",
p->p_pid, current->counter);
#endif
DRM_DEBUG("%d %s\n", lock.context, ret ? "interrupted" : "has lock");
#if DRM_DMA_HISTOGRAM
{
struct timespec ts;
getnanotime(&ts);
timespecsub(&ts, &dev->lck_start);
atomic_inc(&dev->histo.lhld[drm_histogram_slot(&ts)]);
}
#endif
return ret;
}
static int
tdfx_unlock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_lock_t lock;
lock = *(drm_lock_t *) data;
if (lock.context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
p->p_pid, lock.context);
return EINVAL;
}
DRM_DEBUG("%d frees lock (%d holds)\n",
lock.context,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
atomic_inc(&dev->total_unlocks);
if (_DRM_LOCK_IS_CONT(dev->lock.hw_lock->lock))
atomic_inc(&dev->total_contends);
drm_lock_transfer(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT);
/* FIXME: Try to send data to card here */
if (!dev->context_flag) {
if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
DRM_ERROR("\n");
}
}
return 0;
}

31
bsd/Imakefile Normal file
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@ -0,0 +1,31 @@
XCOMM $XFree86$
XCOMM $PI$
#include <Server.tmpl>
LinkSourceFile(xf86drm.c,..)
LinkSourceFile(xf86drmHash.c,..)
LinkSourceFile(xf86drmRandom.c,..)
LinkSourceFile(xf86drmSL.c,..)
LinkSourceFile(xf86drm.h,$(XF86OSSRC))
LinkSourceFile(xf86_OSproc.h,$(XF86OSSRC))
LinkSourceFile(sigio.c,$(XF86OSSRC)/shared)
XCOMM This is a kludge until we determine how best to build the
XCOMM kernel-specific device driver. This allows us to continue
XCOMM to maintain the single Makefile.bsd with kernel-specific
XCOMM support. Later, we can move to a different Imakefile.
#if BuildXF86DRI && BuildXF86DRM
all::
$(MAKE) -f Makefile.bsd
install::
$(MAKE) -f Makefile.bsd install
#else
all::
echo 'Use "make -f Makefile.bsd" to manually build drm.o'
#endif
clean::
$(MAKE) -f Makefile.bsd clean

17
bsd/Makefile Normal file
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@ -0,0 +1,17 @@
# $FreeBSD$
KMOD = drm
SRCS = init.c memory.c auth.c context.c drawable.c bufs.c \
lists.c lock.c ioctl.c fops.c vm.c dma.c sysctl.c
SRCS += tdfx_drv.c tdfx_context.c
SRCS += device_if.h bus_if.h pci_if.h
CFLAGS += ${DEBUG_FLAGS}
KERN = /usr/src/sys
@:
ln -sf /sys @
machine:
ln -sf /sys/i386/include machine
.include <bsd.kmod.mk>

17
bsd/Makefile.bsd Normal file
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@ -0,0 +1,17 @@
# $FreeBSD$
KMOD = drm
SRCS = init.c memory.c auth.c context.c drawable.c bufs.c \
lists.c lock.c ioctl.c fops.c vm.c dma.c sysctl.c
SRCS += tdfx_drv.c tdfx_context.c
SRCS += device_if.h bus_if.h pci_if.h
CFLAGS += ${DEBUG_FLAGS}
KERN = /usr/src/sys
@:
ln -sf /sys @
machine:
ln -sf /sys/i386/include machine
.include <bsd.kmod.mk>

168
bsd/auth.c Normal file
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@ -0,0 +1,168 @@
/* auth.c -- IOCTLs for authentication -*- c -*-
* Created: Tue Feb 2 08:37:54 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 11:31:48 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/auth.c,v 1.4 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/auth.c,v 1.1 1999/09/25 14:37:57 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
static int drm_hash_magic(drm_magic_t magic)
{
return magic & (DRM_HASH_SIZE-1);
}
static drm_file_t *drm_find_file(drm_device_t *dev, drm_magic_t magic)
{
drm_file_t *retval = NULL;
drm_magic_entry_t *pt;
int hash = drm_hash_magic(magic);
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
for (pt = dev->magiclist[hash].head; pt; pt = pt->next) {
if (pt->priv->authenticated) continue;
if (pt->magic == magic) {
retval = pt->priv;
break;
}
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return retval;
}
int drm_add_magic(drm_device_t *dev, drm_file_t *priv, drm_magic_t magic)
{
int hash;
drm_magic_entry_t *entry;
DRM_DEBUG("%d\n", magic);
hash = drm_hash_magic(magic);
entry = drm_alloc(sizeof(*entry), DRM_MEM_MAGIC);
if (!entry) return ENOMEM;
entry->magic = magic;
entry->priv = priv;
entry->next = NULL;
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
if (dev->magiclist[hash].tail) {
dev->magiclist[hash].tail->next = entry;
dev->magiclist[hash].tail = entry;
} else {
dev->magiclist[hash].head = entry;
dev->magiclist[hash].tail = entry;
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return 0;
}
int drm_remove_magic(drm_device_t *dev, drm_magic_t magic)
{
drm_magic_entry_t *prev = NULL;
drm_magic_entry_t *pt;
int hash;
DRM_DEBUG("%d\n", magic);
hash = drm_hash_magic(magic);
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
for (pt = dev->magiclist[hash].head; pt; prev = pt, pt = pt->next) {
if (pt->magic == magic) {
if (dev->magiclist[hash].head == pt) {
dev->magiclist[hash].head = pt->next;
}
if (dev->magiclist[hash].tail == pt) {
dev->magiclist[hash].tail = prev;
}
if (prev) {
prev->next = pt->next;
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return 0;
}
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
return EINVAL;
}
int drm_getmagic(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
static drm_magic_t sequence = 0;
#if 0
static struct simplelock lock; /* XXX */
#endif
drm_device_t *dev = kdev->si_drv1;
drm_file_t *priv;
drm_auth_t auth;
/* Find unique magic */
priv = drm_find_file_by_proc(dev, p);
if (!priv) {
DRM_DEBUG("can't find file structure\n");
return EINVAL;
}
if (priv->magic) {
auth.magic = priv->magic;
} else {
simple_lock(&lock);
do {
if (!sequence) ++sequence; /* reserve 0 */
auth.magic = sequence++;
} while (drm_find_file(dev, auth.magic));
simple_unlock(&lock);
priv->magic = auth.magic;
drm_add_magic(dev, priv, auth.magic);
}
DRM_DEBUG("%u\n", auth.magic);
*(drm_auth_t *) data = auth;
return 0;
}
int drm_authmagic(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_auth_t auth;
drm_file_t *file;
auth = *(drm_auth_t *) data;
DRM_DEBUG("%u\n", auth.magic);
if ((file = drm_find_file(dev, auth.magic))) {
file->authenticated = 1;
drm_remove_magic(dev, auth.magic);
return 0;
}
return EINVAL;
}

495
bsd/bufs.c Normal file
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@ -0,0 +1,495 @@
/* bufs.c -- IOCTLs to manage buffers -*- c -*-
* Created: Tue Feb 2 08:37:54 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 22:48:10 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/bufs.c,v 1.8 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/bufs.c,v 1.1 1999/09/25 14:37:57 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
#include <sys/mman.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <vm/vm_map.h>
/* Compute order. Can be made faster. */
int drm_order(unsigned long size)
{
int order;
unsigned long tmp;
for (order = 0, tmp = size; tmp >>= 1; ++order);
if (size & ~(1 << order)) ++order;
return order;
}
int drm_addmap(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_map_t *map;
if (!(dev->flags & (FREAD|FWRITE)))
return EACCES; /* Require read/write */
map = drm_alloc(sizeof(*map), DRM_MEM_MAPS);
if (!map) return ENOMEM;
*map = *(drm_map_t *) data;
DRM_DEBUG("offset = 0x%08lx, size = 0x%08lx, type = %d\n",
map->offset, map->size, map->type);
if ((map->offset & (PAGE_SIZE-1)) || (map->size & (PAGE_SIZE-1))) {
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
DRM_DEBUG("offset or size not page aligned\n");
return EINVAL;
}
map->mtrr = -1;
map->handle = 0;
switch (map->type) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
if (map->offset + map->size < map->offset
/* || map->offset < virt_to_phys(high_memory) */) {
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
DRM_DEBUG("bad frame buffer size\n");
return EINVAL;
}
#ifdef CONFIG_MTRR
if (map->type == _DRM_FRAME_BUFFER
|| (map->flags & _DRM_WRITE_COMBINING)) {
map->mtrr = mtrr_add(map->offset, map->size,
MTRR_TYPE_WRCOMB, 1);
}
#endif
map->handle = drm_ioremap(map->offset, map->size);
break;
case _DRM_SHM:
DRM_DEBUG("%ld %d\n", map->size, drm_order(map->size));
map->handle = (void *)drm_alloc_pages(drm_order(map->size)
- PAGE_SHIFT,
DRM_MEM_SAREA);
if (!map->handle) {
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
return ENOMEM;
}
map->offset = (unsigned long)map->handle;
if (map->flags & _DRM_CONTAINS_LOCK) {
dev->lock.hw_lock = map->handle; /* Pointer to lock */
}
break;
default:
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
DRM_DEBUG("bad type\n");
return EINVAL;
}
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
if (dev->maplist) {
++dev->map_count;
dev->maplist = drm_realloc(dev->maplist,
(dev->map_count-1)
* sizeof(*dev->maplist),
dev->map_count
* sizeof(*dev->maplist),
DRM_MEM_MAPS);
} else {
dev->map_count = 1;
dev->maplist = drm_alloc(dev->map_count*sizeof(*dev->maplist),
DRM_MEM_MAPS);
}
dev->maplist[dev->map_count-1] = map;
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
*(drm_map_t *) data = *map;
if (map->type != _DRM_SHM)
((drm_map_t *)data)->handle = (void *) map->offset;
return 0;
}
int drm_addbufs(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_device_dma_t *dma = dev->dma;
drm_buf_desc_t request;
int count;
int order;
int size;
int total;
int page_order;
drm_buf_entry_t *entry;
unsigned long page;
drm_buf_t *buf;
int alignment;
unsigned long offset;
int i;
int byte_count;
int page_count;
if (!dma) return EINVAL;
request = *(drm_buf_desc_t *) data;
count = request.count;
order = drm_order(request.size);
size = 1 << order;
DRM_DEBUG("count = %d, size = %d (%d), order = %d, queue_count = %d\n",
request.count, request.size, size, order, dev->queue_count);
if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return EINVAL;
if (dev->queue_count) return EBUSY; /* Not while in use */
alignment = (request.flags & DRM_PAGE_ALIGN) ? round_page(size) :size;
page_order = order - PAGE_SHIFT > 0 ? order - PAGE_SHIFT : 0;
total = PAGE_SIZE << page_order;
simple_lock(&dev->count_lock);
if (dev->buf_use) {
simple_unlock(&dev->count_lock);
return EBUSY;
}
atomic_inc(&dev->buf_alloc);
simple_unlock(&dev->count_lock);
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
entry = &dma->bufs[order];
if (entry->buf_count) {
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
atomic_dec(&dev->buf_alloc);
return ENOMEM; /* May only call once for each order */
}
entry->buflist = drm_alloc(count * sizeof(*entry->buflist),
DRM_MEM_BUFS);
if (!entry->buflist) {
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
atomic_dec(&dev->buf_alloc);
return ENOMEM;
}
memset(entry->buflist, 0, count * sizeof(*entry->buflist));
entry->seglist = drm_alloc(count * sizeof(*entry->seglist),
DRM_MEM_SEGS);
if (!entry->seglist) {
drm_free(entry->buflist,
count * sizeof(*entry->buflist),
DRM_MEM_BUFS);
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
atomic_dec(&dev->buf_alloc);
return ENOMEM;
}
memset(entry->seglist, 0, count * sizeof(*entry->seglist));
dma->pagelist = drm_realloc(dma->pagelist,
dma->page_count * sizeof(*dma->pagelist),
(dma->page_count + (count << page_order))
* sizeof(*dma->pagelist),
DRM_MEM_PAGES);
DRM_DEBUG("pagelist: %d entries\n",
dma->page_count + (count << page_order));
entry->buf_size = size;
entry->page_order = page_order;
byte_count = 0;
page_count = 0;
while (entry->buf_count < count) {
if (!(page = drm_alloc_pages(page_order, DRM_MEM_DMA))) break;
entry->seglist[entry->seg_count++] = page;
for (i = 0; i < (1 << page_order); i++) {
DRM_DEBUG("page %d @ 0x%08lx\n",
dma->page_count + page_count,
page + PAGE_SIZE * i);
dma->pagelist[dma->page_count + page_count++]
= page + PAGE_SIZE * i;
}
for (offset = 0;
offset + size <= total && entry->buf_count < count;
offset += alignment, ++entry->buf_count) {
buf = &entry->buflist[entry->buf_count];
buf->idx = dma->buf_count + entry->buf_count;
buf->total = alignment;
buf->order = order;
buf->used = 0;
buf->offset = (dma->byte_count + byte_count + offset);
buf->address = (void *)(page + offset);
buf->next = NULL;
buf->waiting = 0;
buf->pending = 0;
buf->dma_wait = 0;
buf->pid = 0;
#if DRM_DMA_HISTOGRAM
timespecclear(&buf->time_queued);
timespecclear(&buf->time_dispatched);
timespecclear(&buf->time_completed);
timespecclear(&buf->time_freed);
#endif
DRM_DEBUG("buffer %d @ %p\n",
entry->buf_count, buf->address);
}
byte_count += PAGE_SIZE << page_order;
}
dma->buflist = drm_realloc(dma->buflist,
dma->buf_count * sizeof(*dma->buflist),
(dma->buf_count + entry->buf_count)
* sizeof(*dma->buflist),
DRM_MEM_BUFS);
for (i = dma->buf_count; i < dma->buf_count + entry->buf_count; i++)
dma->buflist[i] = &entry->buflist[i - dma->buf_count];
dma->buf_count += entry->buf_count;
dma->seg_count += entry->seg_count;
dma->page_count += entry->seg_count << page_order;
dma->byte_count += PAGE_SIZE * (entry->seg_count << page_order);
drm_freelist_create(&entry->freelist, entry->buf_count);
for (i = 0; i < entry->buf_count; i++) {
drm_freelist_put(dev, &entry->freelist, &entry->buflist[i]);
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
request.count = entry->buf_count;
request.size = size;
*(drm_buf_desc_t *) data = request;
atomic_dec(&dev->buf_alloc);
return 0;
}
int drm_infobufs(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_device_dma_t *dma = dev->dma;
drm_buf_info_t request;
int i;
int count;
if (!dma) return EINVAL;
simple_lock(&dev->count_lock);
if (atomic_read(&dev->buf_alloc)) {
simple_unlock(&dev->count_lock);
return EBUSY;
}
++dev->buf_use; /* Can't allocate more after this call */
simple_unlock(&dev->count_lock);
request = *(drm_buf_info_t *) data;
for (i = 0, count = 0; i < DRM_MAX_ORDER+1; i++) {
if (dma->bufs[i].buf_count) ++count;
}
DRM_DEBUG("count = %d\n", count);
if (request.count >= count) {
for (i = 0, count = 0; i < DRM_MAX_ORDER+1; i++) {
if (dma->bufs[i].buf_count) {
int error;
error = copyout(&dma->bufs[i].buf_count,
&request.list[count].count,
sizeof(dma->bufs[0]
.buf_count));
if (error) return error;
error = copyout(&dma->bufs[i].buf_size,
&request.list[count].size,
sizeof(dma->bufs[0].buf_size));
if (error) return error;
error = copyout(&dma->bufs[i]
.freelist.low_mark,
&request.list[count].low_mark,
sizeof(dma->bufs[0]
.freelist.low_mark));
if (error) return error;
error = copyout(&dma->bufs[i]
.freelist.high_mark,
&request.list[count].high_mark,
sizeof(dma->bufs[0]
.freelist.high_mark));
if (error) return error;
DRM_DEBUG("%d %d %d %d %d\n",
i,
dma->bufs[i].buf_count,
dma->bufs[i].buf_size,
dma->bufs[i].freelist.low_mark,
dma->bufs[i].freelist.high_mark);
++count;
}
}
}
request.count = count;
*(drm_buf_info_t *) data = request;
return 0;
}
int drm_markbufs(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_device_dma_t *dma = dev->dma;
drm_buf_desc_t request;
int order;
drm_buf_entry_t *entry;
if (!dma) return EINVAL;
request = *(drm_buf_desc_t *) data;
DRM_DEBUG("%d, %d, %d\n",
request.size, request.low_mark, request.high_mark);
order = drm_order(request.size);
if (order < DRM_MIN_ORDER || order > DRM_MAX_ORDER) return EINVAL;
entry = &dma->bufs[order];
if (request.low_mark < 0 || request.low_mark > entry->buf_count)
return EINVAL;
if (request.high_mark < 0 || request.high_mark > entry->buf_count)
return EINVAL;
entry->freelist.low_mark = request.low_mark;
entry->freelist.high_mark = request.high_mark;
return 0;
}
int drm_freebufs(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_device_dma_t *dma = dev->dma;
drm_buf_free_t request;
int i;
int idx;
int error;
drm_buf_t *buf;
if (!dma) return EINVAL;
request = *(drm_buf_free_t *) data;
DRM_DEBUG("%d\n", request.count);
for (i = 0; i < request.count; i++) {
error = copyin(&request.list[i], &idx, sizeof(idx));
if (error)
return error;
if (idx < 0 || idx >= dma->buf_count) {
DRM_ERROR("Index %d (of %d max)\n",
idx, dma->buf_count - 1);
return EINVAL;
}
buf = dma->buflist[idx];
if (buf->pid != p->p_pid) {
DRM_ERROR("Process %d freeing buffer owned by %d\n",
p->p_pid, buf->pid);
return EINVAL;
}
drm_free_buffer(dev, buf);
}
return 0;
}
int drm_mapbufs(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_device_dma_t *dma = dev->dma;
int retcode = 0;
const int zero = 0;
vm_offset_t virtual;
vm_offset_t address;
drm_buf_map_t request;
int i;
if (!dma) return EINVAL;
DRM_DEBUG("\n");
simple_lock(&dev->count_lock);
if (atomic_read(&dev->buf_alloc)) {
simple_unlock(&dev->count_lock);
return EBUSY;
}
++dev->buf_use; /* Can't allocate more after this call */
simple_unlock(&dev->count_lock);
request = *(drm_buf_map_t *) data;
if (request.count >= dma->buf_count) {
virtual = 0;
retcode = vm_mmap(&p->p_vmspace->vm_map,
&virtual,
round_page(dma->byte_count),
PROT_READ|PROT_WRITE, VM_PROT_ALL,
MAP_SHARED,
SLIST_FIRST(&kdev->si_hlist),
0);
if (retcode)
goto done;
request.virtual = (void *)virtual;
for (i = 0; i < dma->buf_count; i++) {
retcode = copyout(&dma->buflist[i]->idx,
&request.list[i].idx,
sizeof(request.list[0].idx));
if (retcode) goto done;
retcode = copyout(&dma->buflist[i]->total,
&request.list[i].total,
sizeof(request.list[0].total));
if (retcode) goto done;
retcode = copyout(&zero,
&request.list[i].used,
sizeof(request.list[0].used));
if (retcode) goto done;
address = virtual + dma->buflist[i]->offset;
retcode = copyout(&address,
&request.list[i].address,
sizeof(address));
if (retcode) goto done;
}
}
done:
request.count = dma->buf_count;
DRM_DEBUG("%d buffers, retcode = %d\n", request.count, retcode);
*(drm_buf_map_t *) data = request;
return retcode;
}

297
bsd/context.c Normal file
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@ -0,0 +1,297 @@
/* context.c -- IOCTLs for contexts and DMA queues -*- c -*-
* Created: Tue Feb 2 08:37:54 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 11:32:09 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/context.c,v 1.5 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/context.c,v 1.1 1999/09/25 14:37:58 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
static int drm_init_queue(drm_device_t *dev, drm_queue_t *q, drm_ctx_t *ctx)
{
DRM_DEBUG("\n");
if (atomic_read(&q->use_count) != 1
|| atomic_read(&q->finalization)
|| atomic_read(&q->block_count)) {
DRM_ERROR("New queue is already in use: u%d f%d b%d\n",
atomic_read(&q->use_count),
atomic_read(&q->finalization),
atomic_read(&q->block_count));
}
atomic_set(&q->finalization, 0);
atomic_set(&q->block_count, 0);
atomic_set(&q->block_read, 0);
atomic_set(&q->block_write, 0);
atomic_set(&q->total_queued, 0);
atomic_set(&q->total_flushed, 0);
atomic_set(&q->total_locks, 0);
q->write_queue = 0;
q->read_queue = 0;
q->flush_queue = 0;
q->flags = ctx->flags;
drm_waitlist_create(&q->waitlist, dev->dma->buf_count);
return 0;
}
/* drm_alloc_queue:
PRE: 1) dev->queuelist[0..dev->queue_count] is allocated and will not
disappear (so all deallocation must be done after IOCTLs are off)
2) dev->queue_count < dev->queue_slots
3) dev->queuelist[i].use_count == 0 and
dev->queuelist[i].finalization == 0 if i not in use
POST: 1) dev->queuelist[i].use_count == 1
2) dev->queue_count < dev->queue_slots */
static int drm_alloc_queue(drm_device_t *dev)
{
int i;
drm_queue_t *queue;
int oldslots;
int newslots;
/* Check for a free queue */
for (i = 0; i < dev->queue_count; i++) {
atomic_inc(&dev->queuelist[i]->use_count);
if (atomic_read(&dev->queuelist[i]->use_count) == 1
&& !atomic_read(&dev->queuelist[i]->finalization)) {
DRM_DEBUG("%d (free)\n", i);
return i;
}
atomic_dec(&dev->queuelist[i]->use_count);
}
/* Allocate a new queue */
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
queue = drm_alloc(sizeof(*queue), DRM_MEM_QUEUES);
memset(queue, 0, sizeof(*queue));
atomic_set(&queue->use_count, 1);
++dev->queue_count;
if (dev->queue_count >= dev->queue_slots) {
oldslots = dev->queue_slots * sizeof(*dev->queuelist);
if (!dev->queue_slots) dev->queue_slots = 1;
dev->queue_slots *= 2;
newslots = dev->queue_slots * sizeof(*dev->queuelist);
dev->queuelist = drm_realloc(dev->queuelist,
oldslots,
newslots,
DRM_MEM_QUEUES);
if (!dev->queuelist) {
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
DRM_DEBUG("out of memory\n");
return -ENOMEM;
}
}
dev->queuelist[dev->queue_count-1] = queue;
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
DRM_DEBUG("%d (new)\n", dev->queue_count - 1);
return dev->queue_count - 1;
}
int drm_resctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_ctx_res_t res;
drm_ctx_t ctx;
int i;
int error;
DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
res = *(drm_ctx_res_t *) data;
if (res.count >= DRM_RESERVED_CONTEXTS) {
memset(&ctx, 0, sizeof(ctx));
for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
ctx.handle = i;
error = copyout(&i, &res.contexts[i],
sizeof(i));
if (error) return error;
}
}
res.count = DRM_RESERVED_CONTEXTS;
*(drm_ctx_res_t *) data = res;
return 0;
}
int drm_addctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
if ((ctx.handle = drm_alloc_queue(dev)) == DRM_KERNEL_CONTEXT) {
/* Init kernel's context and get a new one. */
drm_init_queue(dev, dev->queuelist[ctx.handle], &ctx);
ctx.handle = drm_alloc_queue(dev);
}
drm_init_queue(dev, dev->queuelist[ctx.handle], &ctx);
DRM_DEBUG("%d\n", ctx.handle);
*(drm_ctx_t *) data = ctx;
return 0;
}
int drm_modctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
drm_queue_t *q;
ctx = *(drm_ctx_t *) data;
DRM_DEBUG("%d\n", ctx.handle);
if (ctx.handle < 0 || ctx.handle >= dev->queue_count) return -EINVAL;
q = dev->queuelist[ctx.handle];
atomic_inc(&q->use_count);
if (atomic_read(&q->use_count) == 1) {
/* No longer in use */
atomic_dec(&q->use_count);
return -EINVAL;
}
if (DRM_BUFCOUNT(&q->waitlist)) {
atomic_dec(&q->use_count);
return -EBUSY;
}
q->flags = ctx.flags;
atomic_dec(&q->use_count);
return 0;
}
int drm_getctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
drm_queue_t *q;
ctx = *(drm_ctx_t *) data;
DRM_DEBUG("%d\n", ctx.handle);
if (ctx.handle >= dev->queue_count) return -EINVAL;
q = dev->queuelist[ctx.handle];
atomic_inc(&q->use_count);
if (atomic_read(&q->use_count) == 1) {
/* No longer in use */
atomic_dec(&q->use_count);
return -EINVAL;
}
ctx.flags = q->flags;
atomic_dec(&q->use_count);
*(drm_ctx_t *) data = ctx;
return 0;
}
int drm_switchctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
DRM_DEBUG("%d\n", ctx.handle);
return drm_context_switch(dev, dev->last_context, ctx.handle);
}
int drm_newctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
DRM_DEBUG("%d\n", ctx.handle);
drm_context_switch_complete(dev, ctx.handle);
return 0;
}
int drm_rmctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
drm_queue_t *q;
drm_buf_t *buf;
ctx = *(drm_ctx_t *) data;
DRM_DEBUG("%d\n", ctx.handle);
if (ctx.handle >= dev->queue_count) return -EINVAL;
q = dev->queuelist[ctx.handle];
atomic_inc(&q->use_count);
if (atomic_read(&q->use_count) == 1) {
/* No longer in use */
atomic_dec(&q->use_count);
return -EINVAL;
}
atomic_inc(&q->finalization); /* Mark queue in finalization state */
atomic_sub(2, &q->use_count); /* Mark queue as unused (pending
finalization) */
/* Wait while interrupt servicing is in progress */
while (test_and_set_bit(0, &dev->interrupt_flag)) {
int never;
int error = tsleep(&never, PZERO|PCATCH, "drmrc", 1);
if (error) {
clear_bit(0, &dev->interrupt_flag);
return error;
}
}
/* Remove queued buffers */
while ((buf = drm_waitlist_get(&q->waitlist))) {
drm_free_buffer(dev, buf);
}
clear_bit(0, &dev->interrupt_flag);
/* Wakeup blocked processes */
wakeup(&q->read_queue);
wakeup(&q->write_queue);
wakeup(&q->flush_queue);
/* Finalization over. Queue is made
available when both use_count and
finalization become 0, which won't
happen until all the waiting processes
stop waiting. */
atomic_dec(&q->finalization);
return 0;
}

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/* dma.c -- DMA IOCTL and function support -*- c -*-
* Created: Fri Mar 19 14:30:16 1999 by faith@precisioninsight.com
* Revised: Thu Sep 16 12:55:39 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/dma.c,v 1.7 1999/09/16 16:56:18 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/dma.c,v 1.1 1999/09/25 14:37:58 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
void drm_dma_setup(drm_device_t *dev)
{
int i;
dev->dma = drm_alloc(sizeof(*dev->dma), DRM_MEM_DRIVER);
memset(dev->dma, 0, sizeof(*dev->dma));
for (i = 0; i <= DRM_MAX_ORDER; i++)
memset(&dev->dma->bufs[i], 0, sizeof(dev->dma->bufs[0]));
}
void drm_dma_takedown(drm_device_t *dev)
{
drm_device_dma_t *dma = dev->dma;
int i, j;
if (!dma) return;
/* Clear dma buffers */
for (i = 0; i <= DRM_MAX_ORDER; i++) {
if (dma->bufs[i].seg_count) {
DRM_DEBUG("order %d: buf_count = %d,"
" seg_count = %d\n",
i,
dma->bufs[i].buf_count,
dma->bufs[i].seg_count);
for (j = 0; j < dma->bufs[i].seg_count; j++) {
drm_free_pages(dma->bufs[i].seglist[j],
dma->bufs[i].page_order,
DRM_MEM_DMA);
}
drm_free(dma->bufs[i].buflist,
dma->buf_count
* sizeof(*dma->bufs[0].buflist),
DRM_MEM_BUFS);
drm_free(dma->bufs[i].seglist,
dma->buf_count
* sizeof(*dma->bufs[0].seglist),
DRM_MEM_SEGS);
drm_freelist_destroy(&dma->bufs[i].freelist);
}
}
if (dma->buflist) {
drm_free(dma->buflist,
dma->buf_count * sizeof(*dma->buflist),
DRM_MEM_BUFS);
}
if (dma->pagelist) {
drm_free(dma->pagelist,
dma->page_count * sizeof(*dma->pagelist),
DRM_MEM_PAGES);
}
drm_free(dev->dma, sizeof(*dev->dma), DRM_MEM_DRIVER);
dev->dma = NULL;
}
#if DRM_DMA_HISTOGRAM
/* This is slow, but is useful for debugging. */
int drm_histogram_slot(struct timespec *ts)
{
long count = ts->tv_sec * 1000 + ts->tv_nsec / 1000000;
int value = DRM_DMA_HISTOGRAM_INITIAL;
int slot;
for (slot = 0;
slot < DRM_DMA_HISTOGRAM_SLOTS;
++slot, value = DRM_DMA_HISTOGRAM_NEXT(value)) {
if (count < value) return slot;
}
return DRM_DMA_HISTOGRAM_SLOTS - 1;
}
void drm_histogram_compute(drm_device_t *dev, drm_buf_t *buf)
{
struct timespec queued_to_dispatched;
struct timespec dispatched_to_completed;
struct timespec completed_to_freed;
int q2d, d2c, c2f, q2c, q2f;
if (timespecisset(&buf->time_queued)) {
queued_to_dispatched = buf->time_dispatched;
timespecsub(&queued_to_dispatched, &buf->time_queued);
dispatched_to_completed = buf->time_completed;
timespecsub(&dispatched_to_completed, &buf->time_dispatched);
completed_to_freed = buf->time_freed;
timespecsub(&completed_to_freed, &buf->time_completed);
q2d = drm_histogram_slot(&queued_to_dispatched);
d2c = drm_histogram_slot(&dispatched_to_completed);
c2f = drm_histogram_slot(&completed_to_freed);
timespecadd(&queued_to_dispatched, &dispatched_to_completed);
q2c = drm_histogram_slot(&queued_to_dispatched);
timespecadd(&queued_to_dispatched, &completed_to_freed);
q2f = drm_histogram_slot(&queued_to_dispatched);
atomic_inc(&dev->histo.total);
atomic_inc(&dev->histo.queued_to_dispatched[q2d]);
atomic_inc(&dev->histo.dispatched_to_completed[d2c]);
atomic_inc(&dev->histo.completed_to_freed[c2f]);
atomic_inc(&dev->histo.queued_to_completed[q2c]);
atomic_inc(&dev->histo.queued_to_freed[q2f]);
}
timespecclear(&buf->time_queued);
timespecclear(&buf->time_dispatched);
timespecclear(&buf->time_completed);
timespecclear(&buf->time_freed);
}
#endif
void drm_free_buffer(drm_device_t *dev, drm_buf_t *buf)
{
drm_device_dma_t *dma = dev->dma;
if (!buf) return;
buf->waiting = 0;
buf->pending = 0;
buf->pid = 0;
buf->used = 0;
#if DRM_DMA_HISTOGRAMxx
buf->time_completed = get_cycles();
#endif
if (buf->dma_wait) {
buf->dma_wait = 0;
wakeup(&buf->dma_wait);
} else {
/* If processes are waiting, the last one
to wake will put the buffer on the free
list. If no processes are waiting, we
put the buffer on the freelist here. */
drm_freelist_put(dev, &dma->bufs[buf->order].freelist, buf);
}
}
void drm_reclaim_buffers(drm_device_t *dev, pid_t pid)
{
drm_device_dma_t *dma = dev->dma;
int i;
if (!dma) return;
for (i = 0; i < dma->buf_count; i++) {
if (dma->buflist[i]->pid == pid) {
switch (dma->buflist[i]->list) {
case DRM_LIST_NONE:
drm_free_buffer(dev, dma->buflist[i]);
break;
case DRM_LIST_WAIT:
dma->buflist[i]->list = DRM_LIST_RECLAIM;
break;
default:
/* Buffer already on hardware. */
break;
}
}
}
}
int drm_context_switch(drm_device_t *dev, int old, int new)
{
char buf[64];
drm_queue_t *q;
atomic_inc(&dev->total_ctx);
if (test_and_set_bit(0, &dev->context_flag)) {
DRM_ERROR("Reentering -- FIXME\n");
return EBUSY;
}
#if DRM_DMA_HISTOGRAM
nanotime(&dev->ctx_start);
#endif
DRM_DEBUG("Context switch from %d to %d\n", old, new);
if (new >= dev->queue_count) {
clear_bit(0, &dev->context_flag);
return EINVAL;
}
if (new == dev->last_context) {
clear_bit(0, &dev->context_flag);
return 0;
}
q = dev->queuelist[new];
atomic_inc(&q->use_count);
if (atomic_read(&q->use_count) == 1) {
atomic_dec(&q->use_count);
clear_bit(0, &dev->context_flag);
return EINVAL;
}
if (drm_flags & DRM_FLAG_NOCTX) {
drm_context_switch_complete(dev, new);
} else {
sprintf(buf, "C %d %d\n", old, new);
drm_write_string(dev, buf);
}
atomic_dec(&q->use_count);
return 0;
}
int drm_context_switch_complete(drm_device_t *dev, int new)
{
drm_device_dma_t *dma = dev->dma;
dev->last_context = new; /* PRE/POST: This is the _only_ writer. */
dev->last_switch = ticks;
if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
DRM_ERROR("Lock isn't held after context switch\n");
}
if (!dma || !(dma->next_buffer && dma->next_buffer->while_locked)) {
if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
DRM_ERROR("Cannot free lock\n");
}
}
#if DRM_DMA_HISTOGRAM
{
struct timespec ts;
nanotime(&ts);
timespecsub(&ts, &dev->ctx_start);
atomic_inc(&dev->histo.ctx[drm_histogram_slot(&ts)]);
}
#endif
clear_bit(0, &dev->context_flag);
wakeup(&dev->context_wait);
return 0;
}
void drm_clear_next_buffer(drm_device_t *dev)
{
drm_device_dma_t *dma = dev->dma;
dma->next_buffer = NULL;
if (dma->next_queue && !DRM_BUFCOUNT(&dma->next_queue->waitlist)) {
wakeup(&dma->next_queue->flush_queue);
}
dma->next_queue = NULL;
}
int drm_select_queue(drm_device_t *dev, void (*wrapper)(void *))
{
int i;
int candidate = -1;
int j = ticks;
if (!dev) {
DRM_ERROR("No device\n");
return -1;
}
if (!dev->queuelist || !dev->queuelist[DRM_KERNEL_CONTEXT]) {
/* This only happens between the time the
interrupt is initialized and the time
the queues are initialized. */
return -1;
}
/* Doing "while locked" DMA? */
if (DRM_WAITCOUNT(dev, DRM_KERNEL_CONTEXT)) {
return DRM_KERNEL_CONTEXT;
}
/* If there are buffers on the last_context
queue, and we have not been executing
this context very long, continue to
execute this context. */
if (dev->last_switch <= j
&& dev->last_switch + DRM_TIME_SLICE > j
&& DRM_WAITCOUNT(dev, dev->last_context)) {
return dev->last_context;
}
/* Otherwise, find a candidate */
for (i = dev->last_checked + 1; i < dev->queue_count; i++) {
if (DRM_WAITCOUNT(dev, i)) {
candidate = dev->last_checked = i;
break;
}
}
if (candidate < 0) {
for (i = 0; i < dev->queue_count; i++) {
if (DRM_WAITCOUNT(dev, i)) {
candidate = dev->last_checked = i;
break;
}
}
}
if (wrapper
&& candidate >= 0
&& candidate != dev->last_context
&& dev->last_switch <= j
&& dev->last_switch + DRM_TIME_SLICE > j) {
int s = splclock();
if (dev->timer.c_time != dev->last_switch + DRM_TIME_SLICE) {
callout_reset(&dev->timer,
dev->last_switch + DRM_TIME_SLICE - j,
wrapper,
dev);
}
splx(s);
return -1;
}
return candidate;
}
int drm_dma_enqueue(drm_device_t *dev, drm_dma_t *d)
{
int i;
drm_queue_t *q;
drm_buf_t *buf;
int idx;
int while_locked = 0;
drm_device_dma_t *dma = dev->dma;
int error;
DRM_DEBUG("%d\n", d->send_count);
if (d->flags & _DRM_DMA_WHILE_LOCKED) {
int context = dev->lock.hw_lock->lock;
if (!_DRM_LOCK_IS_HELD(context)) {
DRM_ERROR("No lock held during \"while locked\""
" request\n");
return -EINVAL;
}
if (d->context != _DRM_LOCKING_CONTEXT(context)
&& _DRM_LOCKING_CONTEXT(context) != DRM_KERNEL_CONTEXT) {
DRM_ERROR("Lock held by %d while %d makes"
" \"while locked\" request\n",
_DRM_LOCKING_CONTEXT(context),
d->context);
return -EINVAL;
}
q = dev->queuelist[DRM_KERNEL_CONTEXT];
while_locked = 1;
} else {
q = dev->queuelist[d->context];
}
atomic_inc(&q->use_count);
if (atomic_read(&q->block_write)) {
atomic_inc(&q->block_count);
for (;;) {
if (!atomic_read(&q->block_write)) break;
error = tsleep(&q->block_write, PZERO|PCATCH,
"dmawr", 0);
if (error) {
atomic_dec(&q->use_count);
return error;
}
}
atomic_dec(&q->block_count);
}
for (i = 0; i < d->send_count; i++) {
idx = d->send_indices[i];
if (idx < 0 || idx >= dma->buf_count) {
atomic_dec(&q->use_count);
DRM_ERROR("Index %d (of %d max)\n",
d->send_indices[i], dma->buf_count - 1);
return EINVAL;
}
buf = dma->buflist[ idx ];
if (buf->pid != curproc->p_pid) {
atomic_dec(&q->use_count);
DRM_ERROR("Process %d using buffer owned by %d\n",
curproc->p_pid, buf->pid);
return EINVAL;
}
if (buf->list != DRM_LIST_NONE) {
atomic_dec(&q->use_count);
DRM_ERROR("Process %d using buffer %d on list %d\n",
curproc->p_pid, buf->idx, buf->list);
}
buf->used = d->send_sizes[i];
buf->while_locked = while_locked;
buf->context = d->context;
if (!buf->used) {
DRM_ERROR("Queueing 0 length buffer\n");
}
if (buf->pending) {
atomic_dec(&q->use_count);
DRM_ERROR("Queueing pending buffer:"
" buffer %d, offset %d\n",
d->send_indices[i], i);
return EINVAL;
}
if (buf->waiting) {
atomic_dec(&q->use_count);
DRM_ERROR("Queueing waiting buffer:"
" buffer %d, offset %d\n",
d->send_indices[i], i);
return EINVAL;
}
buf->waiting = 1;
if (atomic_read(&q->use_count) == 1
|| atomic_read(&q->finalization)) {
drm_free_buffer(dev, buf);
} else {
drm_waitlist_put(&q->waitlist, buf);
atomic_inc(&q->total_queued);
}
}
atomic_dec(&q->use_count);
return 0;
}
static int drm_dma_get_buffers_of_order(drm_device_t *dev, drm_dma_t *d,
int order)
{
int i;
int error;
drm_buf_t *buf;
drm_device_dma_t *dma = dev->dma;
for (i = d->granted_count; i < d->request_count; i++) {
buf = drm_freelist_get(&dma->bufs[order].freelist,
d->flags & _DRM_DMA_WAIT);
if (!buf) break;
if (buf->pending || buf->waiting) {
DRM_ERROR("Free buffer %d in use by %d (w%d, p%d)\n",
buf->idx,
buf->pid,
buf->waiting,
buf->pending);
}
buf->pid = curproc->p_pid;
error = copyout(&buf->idx,
&d->request_indices[i],
sizeof(buf->idx));
if (error)
return error;
error = copyout(&buf->total,
&d->request_sizes[i],
sizeof(buf->total));
if (error)
return error;
++d->granted_count;
}
return 0;
}
int drm_dma_get_buffers(drm_device_t *dev, drm_dma_t *dma)
{
int order;
int retcode = 0;
int tmp_order;
order = drm_order(dma->request_size);
dma->granted_count = 0;
retcode = drm_dma_get_buffers_of_order(dev, dma, order);
if (dma->granted_count < dma->request_count
&& (dma->flags & _DRM_DMA_SMALLER_OK)) {
for (tmp_order = order - 1;
!retcode
&& dma->granted_count < dma->request_count
&& tmp_order >= DRM_MIN_ORDER;
--tmp_order) {
retcode = drm_dma_get_buffers_of_order(dev, dma,
tmp_order);
}
}
if (dma->granted_count < dma->request_count
&& (dma->flags & _DRM_DMA_LARGER_OK)) {
for (tmp_order = order + 1;
!retcode
&& dma->granted_count < dma->request_count
&& tmp_order <= DRM_MAX_ORDER;
++tmp_order) {
retcode = drm_dma_get_buffers_of_order(dev, dma,
tmp_order);
}
}
return 0;
}

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/* drawable.c -- IOCTLs for drawables -*- c -*-
* Created: Tue Feb 2 08:37:54 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 09:27:03 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drawable.c,v 1.3 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drawable.c,v 1.1 1999/09/25 14:37:58 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
int drm_adddraw(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
drm_draw_t draw;
draw.handle = 0; /* NOOP */
DRM_DEBUG("%d\n", draw.handle);
*(drm_draw_t *) data = draw;
return 0;
}
int drm_rmdraw(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p)
{
return 0; /* NOOP */
}

274
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/* drm.h -- Header for Direct Rendering Manager -*- c -*-
* Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 13:08:18 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drm.h,v 1.46 1999/08/20 20:00:53 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drm.h,v 1.1 1999/09/25 14:37:58 dawes Exp $
*
*/
#ifndef _DRM_H_
#define _DRM_H_
#include <sys/ioccom.h> /* For _IO* macros */
#define DRM_DEV_DRM "/dev/drm"
#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
#define DRM_DEV_UID 0
#define DRM_DEV_GID 0
#define DRM_NAME "drm" /* Name in kernel, /dev */
#define DRM_MIN_ORDER 5 /* At least 2^5 bytes = 32 bytes */
#define DRM_MAX_ORDER 22 /* Up to 2^22 bytes = 4MB */
#define DRM_RAM_PERCENT 10 /* How much system ram can we lock? */
#define _DRM_LOCK_HELD 0x80000000 /* Hardware lock is held */
#define _DRM_LOCK_CONT 0x40000000 /* Hardware lock is contended */
#define _DRM_LOCK_IS_HELD(lock) ((lock) & _DRM_LOCK_HELD)
#define _DRM_LOCK_IS_CONT(lock) ((lock) & _DRM_LOCK_CONT)
#define _DRM_LOCKING_CONTEXT(lock) ((lock) & ~(_DRM_LOCK_HELD|_DRM_LOCK_CONT))
typedef unsigned long drm_handle_t;
typedef unsigned int drm_context_t;
typedef unsigned int drm_drawable_t;
typedef unsigned int drm_magic_t;
typedef struct drm_version {
int version_major; /* Major version */
int version_minor; /* Minor version */
int version_patchlevel;/* Patch level */
size_t name_len; /* Length of name buffer */
char *name; /* Name of driver */
size_t date_len; /* Length of date buffer */
char *date; /* User-space buffer to hold date */
size_t desc_len; /* Length of desc buffer */
char *desc; /* User-space buffer to hold desc */
} drm_version_t;
typedef struct drm_unique {
size_t unique_len; /* Length of unique */
char *unique; /* Unique name for driver instantiation */
} drm_unique_t;
typedef struct drm_list {
int count; /* Length of user-space structures */
drm_version_t *version;
} drm_list_t;
typedef struct drm_block {
int unused;
} drm_block_t;
typedef struct drm_control {
enum {
DRM_ADD_COMMAND,
DRM_RM_COMMAND,
DRM_INST_HANDLER,
DRM_UNINST_HANDLER
} func;
int irq;
} drm_control_t;
typedef enum drm_map_type {
_DRM_FRAME_BUFFER = 0, /* WC (no caching), no core dump */
_DRM_REGISTERS = 1, /* no caching, no core dump */
_DRM_SHM = 2 /* shared, cached */
} drm_map_type_t;
typedef enum drm_map_flags {
_DRM_RESTRICTED = 0x01, /* Cannot be mapped to user-virtual */
_DRM_READ_ONLY = 0x02,
_DRM_LOCKED = 0x04, /* shared, cached, locked */
_DRM_KERNEL = 0x08, /* kernel requires access */
_DRM_WRITE_COMBINING = 0x10, /* use write-combining if available */
_DRM_CONTAINS_LOCK = 0x20 /* SHM page that contains lock */
} drm_map_flags_t;
typedef struct drm_map {
unsigned long offset; /* Requested physical address (0 for SAREA)*/
unsigned long size; /* Requested physical size (bytes) */
drm_map_type_t type; /* Type of memory to map */
drm_map_flags_t flags; /* Flags */
void *handle; /* User-space: "Handle" to pass to mmap */
/* Kernel-space: kernel-virtual address */
int mtrr; /* MTRR slot used */
/* Private data */
} drm_map_t;
typedef enum drm_lock_flags {
_DRM_LOCK_READY = 0x01, /* Wait until hardware is ready for DMA */
_DRM_LOCK_QUIESCENT = 0x02, /* Wait until hardware quiescent */
_DRM_LOCK_FLUSH = 0x04, /* Flush this context's DMA queue first */
_DRM_LOCK_FLUSH_ALL = 0x08, /* Flush all DMA queues first */
/* These *HALT* flags aren't supported yet
-- they will be used to support the
full-screen DGA-like mode. */
_DRM_HALT_ALL_QUEUES = 0x10, /* Halt all current and future queues */
_DRM_HALT_CUR_QUEUES = 0x20 /* Halt all current queues */
} drm_lock_flags_t;
typedef struct drm_lock {
int context;
drm_lock_flags_t flags;
} drm_lock_t;
typedef enum drm_dma_flags { /* These values *MUST* match xf86drm.h */
/* Flags for DMA buffer dispatch */
_DRM_DMA_BLOCK = 0x01, /* Block until buffer dispatched.
Note, the buffer may not yet have
been processed by the hardware --
getting a hardware lock with the
hardware quiescent will ensure
that the buffer has been
processed. */
_DRM_DMA_WHILE_LOCKED = 0x02, /* Dispatch while lock held */
_DRM_DMA_PRIORITY = 0x04, /* High priority dispatch */
/* Flags for DMA buffer request */
_DRM_DMA_WAIT = 0x10, /* Wait for free buffers */
_DRM_DMA_SMALLER_OK = 0x20, /* Smaller-than-requested buffers ok */
_DRM_DMA_LARGER_OK = 0x40 /* Larger-than-requested buffers ok */
} drm_dma_flags_t;
typedef struct drm_buf_desc {
int count; /* Number of buffers of this size */
int size; /* Size in bytes */
int low_mark; /* Low water mark */
int high_mark; /* High water mark */
enum {
DRM_PAGE_ALIGN = 0x01 /* Align on page boundaries for DMA */
} flags;
} drm_buf_desc_t;
typedef struct drm_buf_info {
int count; /* Entries in list */
drm_buf_desc_t *list;
} drm_buf_info_t;
typedef struct drm_buf_free {
int count;
int *list;
} drm_buf_free_t;
typedef struct drm_buf_pub {
int idx; /* Index into master buflist */
int total; /* Buffer size */
int used; /* Amount of buffer in use (for DMA) */
void *address; /* Address of buffer */
} drm_buf_pub_t;
typedef struct drm_buf_map {
int count; /* Length of buflist */
void *virtual; /* Mmaped area in user-virtual */
drm_buf_pub_t *list; /* Buffer information */
} drm_buf_map_t;
typedef struct drm_dma {
/* Indices here refer to the offset into
buflist in drm_buf_get_t. */
int context; /* Context handle */
int send_count; /* Number of buffers to send */
int *send_indices; /* List of handles to buffers */
int *send_sizes; /* Lengths of data to send */
drm_dma_flags_t flags; /* Flags */
int request_count; /* Number of buffers requested */
int request_size; /* Desired size for buffers */
int *request_indices; /* Buffer information */
int *request_sizes;
int granted_count; /* Number of buffers granted */
} drm_dma_t;
typedef enum {
_DRM_CONTEXT_PRESERVED = 0x01,
_DRM_CONTEXT_2DONLY = 0x02
} drm_ctx_flags_t;
typedef struct drm_ctx {
drm_context_t handle;
drm_ctx_flags_t flags;
} drm_ctx_t;
typedef struct drm_ctx_res {
int count;
drm_ctx_t *contexts;
} drm_ctx_res_t;
typedef struct drm_draw {
drm_drawable_t handle;
} drm_draw_t;
typedef struct drm_auth {
drm_magic_t magic;
} drm_auth_t;
typedef struct drm_irq_busid {
int irq;
int busnum;
int devnum;
int funcnum;
} drm_irq_busid_t;
#define DRM_IOCTL_BASE 'd'
#define DRM_IOCTL_NR(n) ((n) & 0xff)
#define DRM_IO(nr) _IO(DRM_IOCTL_BASE,nr)
#define DRM_IOR(nr,size) _IOR(DRM_IOCTL_BASE,nr,size)
#define DRM_IOW(nr,size) _IOW(DRM_IOCTL_BASE,nr,size)
#define DRM_IOWR(nr,size) _IOWR(DRM_IOCTL_BASE,nr,size)
#define DRM_IOCTL_VERSION DRM_IOWR(0x00, drm_version_t)
#define DRM_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm_unique_t)
#define DRM_IOCTL_GET_MAGIC DRM_IOR( 0x02, drm_auth_t)
#define DRM_IOCTL_IRQ_BUSID DRM_IOWR(0x03, drm_irq_busid_t)
#define DRM_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm_unique_t)
#define DRM_IOCTL_AUTH_MAGIC DRM_IOW( 0x11, drm_auth_t)
#define DRM_IOCTL_BLOCK DRM_IOWR(0x12, drm_block_t)
#define DRM_IOCTL_UNBLOCK DRM_IOWR(0x13, drm_block_t)
#define DRM_IOCTL_CONTROL DRM_IOW( 0x14, drm_control_t)
#define DRM_IOCTL_ADD_MAP DRM_IOWR(0x15, drm_map_t)
#define DRM_IOCTL_ADD_BUFS DRM_IOWR(0x16, drm_buf_desc_t)
#define DRM_IOCTL_MARK_BUFS DRM_IOW( 0x17, drm_buf_desc_t)
#define DRM_IOCTL_INFO_BUFS DRM_IOWR(0x18, drm_buf_info_t)
#define DRM_IOCTL_MAP_BUFS DRM_IOWR(0x19, drm_buf_map_t)
#define DRM_IOCTL_FREE_BUFS DRM_IOW( 0x1a, drm_buf_free_t)
#define DRM_IOCTL_ADD_CTX DRM_IOWR(0x20, drm_ctx_t)
#define DRM_IOCTL_RM_CTX DRM_IOWR(0x21, drm_ctx_t)
#define DRM_IOCTL_MOD_CTX DRM_IOW( 0x22, drm_ctx_t)
#define DRM_IOCTL_GET_CTX DRM_IOWR(0x23, drm_ctx_t)
#define DRM_IOCTL_SWITCH_CTX DRM_IOW( 0x24, drm_ctx_t)
#define DRM_IOCTL_NEW_CTX DRM_IOW( 0x25, drm_ctx_t)
#define DRM_IOCTL_RES_CTX DRM_IOWR(0x26, drm_ctx_res_t)
#define DRM_IOCTL_ADD_DRAW DRM_IOWR(0x27, drm_draw_t)
#define DRM_IOCTL_RM_DRAW DRM_IOWR(0x28, drm_draw_t)
#define DRM_IOCTL_DMA DRM_IOWR(0x29, drm_dma_t)
#define DRM_IOCTL_LOCK DRM_IOW( 0x2a, drm_lock_t)
#define DRM_IOCTL_UNLOCK DRM_IOW( 0x2b, drm_lock_t)
#define DRM_IOCTL_FINISH DRM_IOW( 0x2c, drm_lock_t)
#endif

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bsd/drmP.h Normal file
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/* drmP.h -- Private header for Direct Rendering Manager -*- c -*-
* Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com
* Revised: Tue Oct 12 08:51:07 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drmP.h,v 1.58 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drmP.h,v 1.1 1999/09/25 14:37:59 dawes Exp $
*
*/
#ifndef _DRM_P_H_
#define _DRM_P_H_
#ifdef _KERNEL
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/stat.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/fcntl.h>
#include <sys/uio.h>
#include <sys/filio.h>
#include <sys/sysctl.h>
#include <sys/select.h>
#include "drm.h"
typedef u_int32_t atomic_t;
typedef u_int32_t cycles_t;
typedef u_int32_t spinlock_t;
#define atomic_set(p, v) (*(p) = (v))
#define atomic_read(p) (*(p))
#define atomic_inc(p) atomic_add_int(p, 1)
#define atomic_dec(p) atomic_subtract_int(p, 1)
#define atomic_sub(n, p) atomic_subtract_int(p, n)
/* Fake this */
static __inline u_int32_t
test_and_set_bit(int b, volatile u_int32_t *p)
{
u_int32_t m = 1<<b;
u_int32_t r = *p & m;
*p |= m;
return r;
}
#define clear_bit(b, p) atomic_clear_int(p, 1<<(b))
#define spldrm() spltty()
#define memset(p, v, s) bzero(p, s)
#define DRM_DEBUG_CODE 2 /* Include debugging code (if > 1, then
also include looping detection. */
#define DRM_DMA_HISTOGRAM 1 /* Make histogram of DMA latency. */
#define DRM_HASH_SIZE 16 /* Size of key hash table */
#define DRM_KERNEL_CONTEXT 0 /* Change drm_resctx if changed */
#define DRM_RESERVED_CONTEXTS 1 /* Change drm_resctx if changed */
#define DRM_LOOPING_LIMIT 5000000
#define DRM_BSZ 1024 /* Buffer size for /dev/drm? output */
#define DRM_TIME_SLICE (hz/20) /* Time slice for GLXContexts */
#define DRM_LOCK_SLICE 1 /* Time slice for lock, in jiffies */
#define DRM_FLAG_DEBUG 0x01
#define DRM_FLAG_NOCTX 0x02
#define DRM_MEM_DMA 0
#define DRM_MEM_SAREA 1
#define DRM_MEM_DRIVER 2
#define DRM_MEM_MAGIC 3
#define DRM_MEM_IOCTLS 4
#define DRM_MEM_MAPS 5
#define DRM_MEM_VMAS 6
#define DRM_MEM_BUFS 7
#define DRM_MEM_SEGS 8
#define DRM_MEM_PAGES 9
#define DRM_MEM_FILES 10
#define DRM_MEM_QUEUES 11
#define DRM_MEM_CMDS 12
#define DRM_MEM_MAPPINGS 13
#define DRM_MEM_BUFLISTS 14
/* Backward compatibility section */
#ifndef _PAGE_PWT
/* The name of _PAGE_WT was changed to
_PAGE_PWT in Linux 2.2.6 */
#define _PAGE_PWT _PAGE_WT
#endif
#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
#define _DRM_CAS(lock,old,new,__ret) \
do { \
int __dummy; /* Can't mark eax as clobbered */ \
__asm__ __volatile__( \
"lock ; cmpxchg %4,%1\n\t" \
"setnz %0" \
: "=d" (__ret), \
"=m" (__drm_dummy_lock(lock)), \
"=a" (__dummy) \
: "2" (old), \
"r" (new)); \
} while (0)
/* Macros to make printk easier */
#define DRM_ERROR(fmt, arg...) \
printf("error: " "[" DRM_NAME ":" __FUNCTION__ "] *ERROR* " fmt , ##arg)
#define DRM_MEM_ERROR(area, fmt, arg...) \
printf("error: " "[" DRM_NAME ":" __FUNCTION__ ":%s] *ERROR* " fmt , \
drm_mem_stats[area].name , ##arg)
#define DRM_INFO(fmt, arg...) printf("info: " "[" DRM_NAME "] " fmt , ##arg)
#if DRM_DEBUG_CODE
#define DRM_DEBUG(fmt, arg...) \
do { \
if (drm_flags&DRM_FLAG_DEBUG) \
printf("[" DRM_NAME ":" __FUNCTION__ "] " fmt , \
##arg); \
} while (0)
#else
#define DRM_DEBUG(fmt, arg...) do { } while (0)
#endif
#define DRM_PROC_LIMIT (PAGE_SIZE-80)
#define DRM_SYSCTL_PRINT(fmt, arg...) \
snprintf(buf, sizeof(buf), fmt, ##arg); \
error = SYSCTL_OUT(req, buf, strlen(buf)); \
if (error) return error;
#define DRM_SYSCTL_PRINT_RET(ret, fmt, arg...) \
snprintf(buf, sizeof(buf), fmt, ##arg); \
error = SYSCTL_OUT(req, buf, strlen(buf)); \
if (error) { ret; return error; }
/* Internal types and structures */
#define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#define DRM_MIN(a,b) ((a)<(b)?(a):(b))
#define DRM_MAX(a,b) ((a)>(b)?(a):(b))
#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
#define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
typedef struct drm_ioctl_desc {
d_ioctl_t *func;
int auth_needed;
int root_only;
} drm_ioctl_desc_t;
typedef struct drm_devstate {
pid_t owner; /* X server pid holding x_lock */
} drm_devstate_t;
typedef struct drm_magic_entry {
drm_magic_t magic;
struct drm_file *priv;
struct drm_magic_entry *next;
} drm_magic_entry_t;
typedef struct drm_magic_head {
struct drm_magic_entry *head;
struct drm_magic_entry *tail;
} drm_magic_head_t;
typedef struct drm_vma_entry {
struct vm_area_struct *vma;
struct drm_vma_entry *next;
pid_t pid;
} drm_vma_entry_t;
typedef struct drm_buf {
int idx; /* Index into master buflist */
int total; /* Buffer size */
int order; /* log-base-2(total) */
int used; /* Amount of buffer in use (for DMA) */
unsigned long offset; /* Byte offset (used internally) */
void *address; /* Address of buffer */
struct drm_buf *next; /* Kernel-only: used for free list */
__volatile__ int waiting; /* On kernel DMA queue */
__volatile__ int pending; /* On hardware DMA queue */
int dma_wait; /* Processes waiting */
pid_t pid; /* PID of holding process */
int context; /* Kernel queue for this buffer */
int while_locked;/* Dispatch this buffer while locked */
enum {
DRM_LIST_NONE = 0,
DRM_LIST_FREE = 1,
DRM_LIST_WAIT = 2,
DRM_LIST_PEND = 3,
DRM_LIST_PRIO = 4,
DRM_LIST_RECLAIM = 5
} list; /* Which list we're on */
#if DRM_DMA_HISTOGRAM
struct timespec time_queued; /* Queued to kernel DMA queue */
struct timespec time_dispatched; /* Dispatched to hardware */
struct timespec time_completed; /* Completed by hardware */
struct timespec time_freed; /* Back on freelist */
#endif
} drm_buf_t;
#if DRM_DMA_HISTOGRAM
#define DRM_DMA_HISTOGRAM_SLOTS 9
#define DRM_DMA_HISTOGRAM_INITIAL 10
#define DRM_DMA_HISTOGRAM_NEXT(current) ((current)*10)
typedef struct drm_histogram {
atomic_t total;
atomic_t queued_to_dispatched[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t dispatched_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t completed_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t queued_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t queued_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t dma[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t schedule[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t ctx[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t lacq[DRM_DMA_HISTOGRAM_SLOTS];
atomic_t lhld[DRM_DMA_HISTOGRAM_SLOTS];
} drm_histogram_t;
#endif
/* bufs is one longer than it has to be */
typedef struct drm_waitlist {
int count; /* Number of possible buffers */
drm_buf_t **bufs; /* List of pointers to buffers */
drm_buf_t **rp; /* Read pointer */
drm_buf_t **wp; /* Write pointer */
drm_buf_t **end; /* End pointer */
spinlock_t read_lock;
spinlock_t write_lock;
} drm_waitlist_t;
typedef struct drm_freelist {
int initialized; /* Freelist in use */
atomic_t count; /* Number of free buffers */
drm_buf_t *next; /* End pointer */
int waiting; /* Processes waiting on free bufs */
int low_mark; /* Low water mark */
int high_mark; /* High water mark */
atomic_t wfh; /* If waiting for high mark */
} drm_freelist_t;
typedef struct drm_buf_entry {
int buf_size;
int buf_count;
drm_buf_t *buflist;
int seg_count;
int page_order;
unsigned long *seglist;
drm_freelist_t freelist;
} drm_buf_entry_t;
typedef struct drm_hw_lock {
__volatile__ unsigned int lock;
char padding[60]; /* Pad to cache line */
} drm_hw_lock_t;
typedef TAILQ_HEAD(drm_file_list, drm_file) drm_file_list_t;
typedef struct drm_file {
TAILQ_ENTRY(drm_file) link;
int authenticated;
int minor;
pid_t pid;
uid_t uid;
int refs;
drm_magic_t magic;
unsigned long ioctl_count;
struct drm_device *devXX;
} drm_file_t;
typedef struct drm_queue {
atomic_t use_count; /* Outstanding uses (+1) */
atomic_t finalization; /* Finalization in progress */
atomic_t block_count; /* Count of processes waiting */
atomic_t block_read; /* Queue blocked for reads */
int read_queue; /* Processes waiting on block_read */
atomic_t block_write; /* Queue blocked for writes */
int write_queue; /* Processes waiting on block_write */
atomic_t total_queued; /* Total queued statistic */
atomic_t total_flushed;/* Total flushes statistic */
atomic_t total_locks; /* Total locks statistics */
drm_ctx_flags_t flags; /* Context preserving and 2D-only */
drm_waitlist_t waitlist; /* Pending buffers */
int flush_queue; /* Processes waiting until flush */
} drm_queue_t;
typedef struct drm_lock_data {
drm_hw_lock_t *hw_lock; /* Hardware lock */
pid_t pid; /* PID of lock holder (0=kernel) */
int lock_queue; /* Queue of blocked processes */
unsigned long lock_time; /* Time of last lock in jiffies */
} drm_lock_data_t;
typedef struct drm_device_dma {
/* Performance Counters */
atomic_t total_prio; /* Total DRM_DMA_PRIORITY */
atomic_t total_bytes; /* Total bytes DMA'd */
atomic_t total_dmas; /* Total DMA buffers dispatched */
atomic_t total_missed_dma; /* Missed drm_do_dma */
atomic_t total_missed_lock; /* Missed lock in drm_do_dma */
atomic_t total_missed_free; /* Missed drm_free_this_buffer */
atomic_t total_missed_sched;/* Missed drm_dma_schedule */
atomic_t total_tried; /* Tried next_buffer */
atomic_t total_hit; /* Sent next_buffer */
atomic_t total_lost; /* Lost interrupt */
drm_buf_entry_t bufs[DRM_MAX_ORDER+1];
int buf_count;
drm_buf_t **buflist; /* Vector of pointers info bufs */
int seg_count;
int page_count;
vm_offset_t *pagelist;
unsigned long byte_count;
/* DMA support */
drm_buf_t *this_buffer; /* Buffer being sent */
drm_buf_t *next_buffer; /* Selected buffer to send */
drm_queue_t *next_queue; /* Queue from which buffer selected*/
int waiting; /* Processes waiting on free bufs */
} drm_device_dma_t;
typedef struct drm_device {
const char *name; /* Simple driver name */
char *unique; /* Unique identifier: e.g., busid */
int unique_len; /* Length of unique field */
dev_t device; /* Device number for mknod */
char *devname; /* For /proc/interrupts */
int blocked; /* Blocked due to VC switch? */
int flags; /* Flags to open(2) */
int writable; /* Opened with FWRITE */
struct proc_dir_entry *root; /* Root for this device's entries */
/* Locks */
struct simplelock count_lock; /* For inuse, open_count, buf_use */
struct lock dev_lock; /* For others */
/* Usage Counters */
int open_count; /* Outstanding files open */
atomic_t ioctl_count; /* Outstanding IOCTLs pending */
atomic_t vma_count; /* Outstanding vma areas open */
int buf_use; /* Buffers in use -- cannot alloc */
atomic_t buf_alloc; /* Buffer allocation in progress */
/* Performance Counters */
atomic_t total_open;
atomic_t total_close;
atomic_t total_ioctl;
atomic_t total_irq; /* Total interruptions */
atomic_t total_ctx; /* Total context switches */
atomic_t total_locks;
atomic_t total_unlocks;
atomic_t total_contends;
atomic_t total_sleeps;
/* Authentication */
drm_file_list_t files;
drm_magic_head_t magiclist[DRM_HASH_SIZE];
/* Memory management */
drm_map_t **maplist; /* Vector of pointers to regions */
int map_count; /* Number of mappable regions */
drm_vma_entry_t *vmalist; /* List of vmas (for debugging) */
drm_lock_data_t lock; /* Information on hardware lock */
/* DMA queues (contexts) */
int queue_count; /* Number of active DMA queues */
int queue_reserved; /* Number of reserved DMA queues */
int queue_slots; /* Actual length of queuelist */
drm_queue_t **queuelist; /* Vector of pointers to DMA queues */
drm_device_dma_t *dma; /* Optional pointer for DMA support */
/* Context support */
int irq; /* Interrupt used by board */
__volatile__ int context_flag; /* Context swapping flag */
__volatile__ int interrupt_flag;/* Interruption handler flag */
__volatile__ int dma_flag; /* DMA dispatch flag */
struct callout timer; /* Timer for delaying ctx switch */
int context_wait; /* Processes waiting on ctx switch */
int last_checked; /* Last context checked for DMA */
int last_context; /* Last current context */
int last_switch; /* Time at last context switch */
#if 0
struct tq_struct tq;
#endif
struct timespec ctx_start;
struct timespec lck_start;
#if DRM_DMA_HISTOGRAM
drm_histogram_t histo;
#endif
/* Callback to X server for context switch
and for heavy-handed reset. */
char buf[DRM_BSZ]; /* Output buffer */
char *buf_rp; /* Read pointer */
char *buf_wp; /* Write pointer */
char *buf_end; /* End pointer */
struct sigio *buf_sigio; /* Processes waiting for SIGIO */
struct selinfo buf_sel; /* Workspace for select/poll */
int buf_readers; /* Processes waiting to read */
int buf_writers; /* Processes waiting to ctx switch */
int buf_selecting; /* True if poll sleeper */
/* Sysctl support */
struct drm_sysctl_info *sysctl;
} drm_device_t;
/* Internal function definitions */
/* Misc. support (init.c) */
extern int drm_flags;
extern void drm_parse_options(char *s);
/* Device support (fops.c) */
extern drm_file_t *drm_find_file_by_proc(drm_device_t *dev, struct proc *p);
extern int drm_open_helper(dev_t kdev, int flags, int fmt, struct proc *p,
drm_device_t *dev);
extern d_close_t drm_close;
extern d_read_t drm_read;
extern d_write_t drm_write;
extern d_poll_t drm_poll;
extern int drm_fsetown(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p);
extern int drm_fgetown(dev_t kdev, u_long cmd, caddr_t data,
int flags, struct proc *p);
extern int drm_write_string(drm_device_t *dev, const char *s);
#if 0
/* Mapping support (vm.c) */
extern unsigned long drm_vm_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern unsigned long drm_vm_shm_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern unsigned long drm_vm_dma_nopage(struct vm_area_struct *vma,
unsigned long address,
int write_access);
extern void drm_vm_open(struct vm_area_struct *vma);
extern void drm_vm_close(struct vm_area_struct *vma);
extern int drm_mmap_dma(struct file *filp,
struct vm_area_struct *vma);
#endif
extern d_mmap_t drm_mmap;
/* Proc support (proc.c) */
extern int drm_sysctl_init(drm_device_t *dev);
extern int drm_sysctl_cleanup(drm_device_t *dev);
/* Memory management support (memory.c) */
extern void drm_mem_init(void);
extern int drm_mem_info SYSCTL_HANDLER_ARGS;
extern void *drm_alloc(size_t size, int area);
extern void *drm_realloc(void *oldpt, size_t oldsize, size_t size,
int area);
extern char *drm_strdup(const char *s, int area);
extern void drm_strfree(char *s, int area);
extern void drm_free(void *pt, size_t size, int area);
extern unsigned long drm_alloc_pages(int order, int area);
extern void drm_free_pages(unsigned long address, int order,
int area);
extern void *drm_ioremap(unsigned long offset, unsigned long size);
extern void drm_ioremapfree(void *pt, unsigned long size);
/* Buffer management support (bufs.c) */
extern int drm_order(unsigned long size);
extern d_ioctl_t drm_addmap;
extern d_ioctl_t drm_addbufs;
extern d_ioctl_t drm_infobufs;
extern d_ioctl_t drm_markbufs;
extern d_ioctl_t drm_freebufs;
extern d_ioctl_t drm_mapbufs;
/* Buffer list management support (lists.c) */
extern int drm_waitlist_create(drm_waitlist_t *bl, int count);
extern int drm_waitlist_destroy(drm_waitlist_t *bl);
extern int drm_waitlist_put(drm_waitlist_t *bl, drm_buf_t *buf);
extern drm_buf_t *drm_waitlist_get(drm_waitlist_t *bl);
extern int drm_freelist_create(drm_freelist_t *bl, int count);
extern int drm_freelist_destroy(drm_freelist_t *bl);
extern int drm_freelist_put(drm_device_t *dev, drm_freelist_t *bl,
drm_buf_t *buf);
extern drm_buf_t *drm_freelist_get(drm_freelist_t *bl, int block);
/* DMA support (gen_dma.c) */
extern void drm_dma_setup(drm_device_t *dev);
extern void drm_dma_takedown(drm_device_t *dev);
extern void drm_free_buffer(drm_device_t *dev, drm_buf_t *buf);
extern void drm_reclaim_buffers(drm_device_t *dev, pid_t pid);
extern int drm_context_switch(drm_device_t *dev, int old, int new);
extern int drm_context_switch_complete(drm_device_t *dev, int new);
extern void drm_wakeup(drm_device_t *dev, drm_buf_t *buf);
extern void drm_clear_next_buffer(drm_device_t *dev);
extern int drm_select_queue(drm_device_t *dev,
void (*wrapper)(void *));
extern int drm_dma_enqueue(drm_device_t *dev, drm_dma_t *dma);
extern int drm_dma_get_buffers(drm_device_t *dev, drm_dma_t *dma);
#if DRM_DMA_HISTOGRAM
extern int drm_histogram_slot(struct timespec *ts);
extern void drm_histogram_compute(drm_device_t *dev, drm_buf_t *buf);
#endif
/* Misc. IOCTL support (ioctl.c) */
extern d_ioctl_t drm_irq_busid;
extern d_ioctl_t drm_getunique;
extern d_ioctl_t drm_setunique;
/* Context IOCTL support (context.c) */
extern d_ioctl_t drm_resctx;
extern d_ioctl_t drm_addctx;
extern d_ioctl_t drm_modctx;
extern d_ioctl_t drm_getctx;
extern d_ioctl_t drm_switchctx;
extern d_ioctl_t drm_newctx;
extern d_ioctl_t drm_rmctx;
/* Drawable IOCTL support (drawable.c) */
extern d_ioctl_t drm_adddraw;
extern d_ioctl_t drm_rmdraw;
/* Authentication IOCTL support (auth.c) */
extern int drm_add_magic(drm_device_t *dev, drm_file_t *priv,
drm_magic_t magic);
extern int drm_remove_magic(drm_device_t *dev, drm_magic_t magic);
extern d_ioctl_t drm_getmagic;
extern d_ioctl_t drm_authmagic;
/* Locking IOCTL support (lock.c) */
extern d_ioctl_t drm_block;
extern d_ioctl_t drm_unblock;
extern int drm_lock_take(__volatile__ unsigned int *lock,
unsigned int context);
extern int drm_lock_transfer(drm_device_t *dev,
__volatile__ unsigned int *lock,
unsigned int context);
extern int drm_lock_free(drm_device_t *dev,
__volatile__ unsigned int *lock,
unsigned int context);
extern d_ioctl_t drm_finish;
extern int drm_flush_unblock(drm_device_t *dev, int context,
drm_lock_flags_t flags);
extern int drm_flush_block_and_flush(drm_device_t *dev, int context,
drm_lock_flags_t flags);
#endif
#endif

418
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/* drmstat.c -- DRM device status and testing program
* Created: Tue Jan 5 08:19:24 1999 by faith@precisioninsight.com
* Revised: Sun Aug 1 11:02:00 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drmstat.c,v 1.28 1999/08/04 18:12:11 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/drmstat.c,v 1.1 1999/09/25 14:37:59 dawes Exp $
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <strings.h>
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
#include "xf86drm.h"
int sigio_fd;
static double usec(struct timeval *end, struct timeval *start)
{
double e = end->tv_sec * 1000000 + end->tv_usec;
double s = start->tv_sec * 1000000 + start->tv_usec;
return e - s;
}
static void getversion(int fd)
{
drmVersionPtr version;
version = drmGetVersion(fd);
if (version) {
printf( "Name: %s\n", version->name ? version->name : "?" );
printf( " Version: %d.%d.%d\n",
version->version_major,
version->version_minor,
version->version_patchlevel );
printf( " Date: %s\n", version->date ? version->date : "?" );
printf( " Desc: %s\n", version->desc ? version->desc : "?" );
drmFreeVersion(version);
} else {
printf( "No driver available\n" );
}
}
void handler(int fd, void *oldctx, void *newctx)
{
printf("Got fd %d\n", fd);
}
void process_sigio(char *device)
{
int fd;
printf("%s\n", device);
if ((fd = open(device, 0)) < 0) {
printf("%d\n", errno);
drmError(-errno, __FUNCTION__);
exit(1);
}
sigio_fd = fd;
drmInstallSIGIOHandler(fd, handler);
for (;;) sleep(60);
}
int main(int argc, char **argv)
{
int c;
int r = 0;
int fd = -1;
drmHandle handle;
void *address;
char *pt;
unsigned long count;
unsigned long offset;
unsigned long size;
drmContext context;
int loops;
char buf[1024];
int i;
drmBufInfoPtr info;
drmBufMapPtr bufs;
drmLockPtr lock;
int secs;
while ((c = getopt(argc, argv,
"lc:vo:O:f:s:w:W:b:r:R:P:L:C:XS:B:F:")) != EOF)
switch (c) {
case 'F':
count = strtoul(optarg, NULL, 0);
if (!fork()) {
dup(fd);
sleep(count);
}
close(fd);
break;
case 'v': getversion(fd); break;
case 'X':
if ((r = drmCreateContext(fd, &context))) {
drmError(r, argv[0]);
return 1;
}
printf( "Got %d\n", context);
break;
case 'S':
process_sigio(optarg);
break;
case 'C':
if ((r = drmSwitchToContext(fd, strtoul(optarg, NULL, 0)))) {
drmError(r, argv[0]);
return 1;
}
break;
case 'c':
if ((r = drmSetBusid(fd,optarg))) {
drmError(r, argv[0]);
return 1;
}
break;
case 'o':
if ((fd = drmOpen(optarg, NULL)) < 0) {
drmError(fd, argv[0]);
return 1;
}
break;
case 'O':
if ((fd = drmOpen(NULL, optarg)) < 0) {
drmError(fd, argv[0]);
return 1;
}
break;
case 'B': /* Test buffer allocation */
count = strtoul(optarg, &pt, 0);
size = strtoul(pt+1, &pt, 0);
secs = strtoul(pt+1, NULL, 0);
{
drmDMAReq dma;
int *indices, *sizes;
indices = alloca(sizeof(*indices) * count);
sizes = alloca(sizeof(*sizes) * count);
dma.context = context;
dma.send_count = 0;
dma.request_count = count;
dma.request_size = size;
dma.request_list = indices;
dma.request_sizes = sizes;
dma.flags = DRM_DMA_WAIT;
if ((r = drmDMA(fd, &dma))) {
drmError(r, argv[0]);
return 1;
}
for (i = 0; i < dma.granted_count; i++) {
printf("%5d: index = %d, size = %d\n",
i, dma.request_list[i], dma.request_sizes[i]);
}
sleep(secs);
drmFreeBufs(fd, dma.granted_count, indices);
}
break;
case 'b':
count = strtoul(optarg, &pt, 0);
size = strtoul(pt+1, NULL, 0);
if ((r = drmAddBufs(fd, count, size, 0)) < 0) {
drmError(r, argv[0]);
return 1;
}
if (!(info = drmGetBufInfo(fd))) {
drmError(0, argv[0]);
return 1;
}
for (i = 0; i < info->count; i++) {
printf("%5d buffers of size %6d (low = %d, high = %d)\n",
info->list[i].count,
info->list[i].size,
info->list[i].low_mark,
info->list[i].high_mark);
}
if ((r = drmMarkBufs(fd, 0.50, 0.80))) {
drmError(r, argv[0]);
return 1;
}
if (!(info = drmGetBufInfo(fd))) {
drmError(0, argv[0]);
return 1;
}
for (i = 0; i < info->count; i++) {
printf("%5d buffers of size %6d (low = %d, high = %d)\n",
info->list[i].count,
info->list[i].size,
info->list[i].low_mark,
info->list[i].high_mark);
}
printf("===== /proc/drm/1/meminfo =====\n");
sprintf(buf, "cat /proc/drm/1/meminfo");
system(buf);
#if 1
if (!(bufs = drmMapBufs(fd))) {
drmError(0, argv[0]);
return 1;
}
printf("===============================\n");
printf( "%d bufs\n", bufs->count);
for (i = 0; i < bufs->count; i++) {
printf( " %4d: %8d bytes at %p\n",
i,
bufs->list[i].total,
bufs->list[i].address);
}
printf("===== /proc/drm/1/vmainfo =====\n");
sprintf(buf, "cat /proc/drm/1/vmainfo");
system(buf);
#endif
break;
case 'f':
offset = strtoul(optarg, &pt, 0);
size = strtoul(pt+1, NULL, 0);
handle = 0;
if ((r = drmAddMap(fd, offset, size,
DRM_FRAME_BUFFER, 0, &handle))) {
drmError(r, argv[0]);
return 1;
}
printf("0x%08lx:0x%04lx added\n", offset, size);
printf("===== /proc/drm/1/meminfo =====\n");
sprintf(buf, "cat /proc/drm/1/meminfo");
system(buf);
break;
case 'r':
case 'R':
offset = strtoul(optarg, &pt, 0);
size = strtoul(pt+1, NULL, 0);
handle = 0;
if ((r = drmAddMap(fd, offset, size,
DRM_REGISTERS,
c == 'R' ? DRM_READ_ONLY : 0,
&handle))) {
drmError(r, argv[0]);
return 1;
}
printf("0x%08lx:0x%04lx added\n", offset, size);
printf("===== /proc/drm/1/meminfo =====\n");
sprintf(buf, "cat /proc/drm/1/meminfo");
system(buf);
break;
case 's':
size = strtoul(optarg, &pt, 0);
handle = 0;
if ((r = drmAddMap(fd, 0, size,
DRM_SHM, DRM_CONTAINS_LOCK,
&handle))) {
drmError(r, argv[0]);
return 1;
}
printf("0x%04lx byte shm added at 0x%08lx\n", size, handle);
sprintf(buf, "sysctl hw.graphics.0.vm");
system(buf);
break;
case 'P':
offset = strtoul(optarg, &pt, 0);
size = strtoul(pt+1, NULL, 0);
address = NULL;
if ((r = drmMap(fd, offset, size, &address))) {
drmError(r, argv[0]);
return 1;
}
printf("0x%08lx:0x%04lx mapped at %p for pid %d\n",
offset, size, address, getpid());
printf("===== hw.graphics.0.vma =====\n");
sprintf(buf, "sysctl hw.graphics.0.vma");
system(buf);
mprotect((void *)offset, size, PROT_READ);
printf("===== hw.graphics.0.vma =====\n");
sprintf(buf, "sysctl hw.graphics.0.vma");
system(buf);
break;
case 'w':
case 'W':
offset = strtoul(optarg, &pt, 0);
size = strtoul(pt+1, NULL, 0);
address = NULL;
if ((r = drmMap(fd, offset, size, &address))) {
drmError(r, argv[0]);
return 1;
}
printf("0x%08lx:0x%04lx mapped at %p for pid %d\n",
offset, size, address, getpid());
printf("===== /proc/%d/maps =====\n", getpid());
sprintf(buf, "cat /proc/%d/maps", getpid());
system(buf);
printf("===== /proc/drm/1/meminfo =====\n");
sprintf(buf, "cat /proc/drm/1/meminfo");
system(buf);
printf("===== /proc/drm/1/vmainfo =====\n");
sprintf(buf, "cat /proc/drm/1/vmainfo");
system(buf);
printf("===== READING =====\n");
for (i = 0; i < 0x10; i++)
printf("%02x ", (unsigned int)((unsigned char *)address)[i]);
printf("\n");
if (c == 'w') {
printf("===== WRITING =====\n");
for (i = 0; i < size; i+=2) {
((char *)address)[i] = i & 0xff;
((char *)address)[i+1] = i & 0xff;
}
}
printf("===== READING =====\n");
for (i = 0; i < 0x10; i++)
printf("%02x ", (unsigned int)((unsigned char *)address)[i]);
printf("\n");
printf("===== /proc/drm/1/vmainfo =====\n");
sprintf(buf, "cat /proc/drm/1/vmainfo");
system(buf);
break;
case 'L':
context = strtoul(optarg, &pt, 0);
offset = strtoul(pt+1, &pt, 0);
size = strtoul(pt+1, &pt, 0);
loops = strtoul(pt+1, NULL, 0);
address = NULL;
if ((r = drmMap(fd, offset, size, &address))) {
drmError(r, argv[0]);
return 1;
}
lock = address;
#if 1
{
int counter = 0;
struct timeval loop_start, loop_end;
struct timeval lock_start, lock_end;
double wt;
#define HISTOSIZE 9
int histo[HISTOSIZE];
int output = 0;
int fast = 0;
if (loops < 0) {
loops = -loops;
++output;
}
for (i = 0; i < HISTOSIZE; i++) histo[i] = 0;
gettimeofday(&loop_start, NULL);
for (i = 0; i < loops; i++) {
gettimeofday(&lock_start, NULL);
DRM_LIGHT_LOCK_COUNT(fd,lock,context,fast);
gettimeofday(&lock_end, NULL);
DRM_UNLOCK(fd,lock,context);
++counter;
wt = usec(&lock_end, &lock_start);
if (wt <= 2.5) ++histo[8];
if (wt < 5.0) ++histo[0];
else if (wt < 50.0) ++histo[1];
else if (wt < 500.0) ++histo[2];
else if (wt < 5000.0) ++histo[3];
else if (wt < 50000.0) ++histo[4];
else if (wt < 500000.0) ++histo[5];
else if (wt < 5000000.0) ++histo[6];
else ++histo[7];
if (output) printf( "%.2f uSec, %d fast\n", wt, fast);
}
gettimeofday(&loop_end, NULL);
printf( "Average wait time = %.2f usec, %d fast\n",
usec(&loop_end, &loop_start) / counter, fast);
printf( "%9d <= 2.5 uS\n", histo[8]);
printf( "%9d < 5 uS\n", histo[0]);
printf( "%9d < 50 uS\n", histo[1]);
printf( "%9d < 500 uS\n", histo[2]);
printf( "%9d < 5000 uS\n", histo[3]);
printf( "%9d < 50000 uS\n", histo[4]);
printf( "%9d < 500000 uS\n", histo[5]);
printf( "%9d < 5000000 uS\n", histo[6]);
printf( "%9d >= 5000000 uS\n", histo[7]);
}
#else
printf( "before lock: 0x%08x\n", lock->lock);
printf( "lock: 0x%08x\n", lock->lock);
sleep(5);
printf( "unlock: 0x%08x\n", lock->lock);
#endif
break;
default:
fprintf( stderr, "Usage: drmstat [options]\n" );
return 1;
}
return r;
}

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/* fops.c -- File operations for DRM -*- c -*-
* Created: Mon Jan 4 08:58:31 1999 by faith@precisioninsight.com
* Revised: Tue Oct 12 08:48:59 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/fops.c,v 1.3 1999/08/20 15:36:45 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/fops.c,v 1.1 1999/09/25 14:37:59 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
#include <sys/signalvar.h>
#include <sys/poll.h>
drm_file_t *drm_find_file_by_proc(drm_device_t *dev, struct proc *p)
{
uid_t uid = p->p_cred->p_svuid;
pid_t pid = p->p_pid;
drm_file_t *priv;
TAILQ_FOREACH(priv, &dev->files, link)
if (priv->pid == pid && priv->uid == uid)
return priv;
return NULL;
}
/* drm_open is called whenever a process opens /dev/drm. */
int drm_open_helper(dev_t kdev, int flags, int fmt, struct proc *p,
drm_device_t *dev)
{
int m = minor(kdev);
drm_file_t *priv;
if (flags & O_EXCL)
return EBUSY; /* No exclusive opens */
dev->flags = flags;
DRM_DEBUG("pid = %d, device = %p, minor = %d\n",
p->p_pid, dev->device, m);
priv = drm_find_file_by_proc(dev, p);
if (priv) {
priv->refs++;
} else {
priv = drm_alloc(sizeof(*priv), DRM_MEM_FILES);
memset(priv, 0, sizeof(*priv));
priv->uid = p->p_cred->p_svuid;
priv->pid = p->p_pid;
priv->refs = 1;
priv->minor = m;
priv->devXX = dev;
priv->ioctl_count = 0;
priv->authenticated = !suser(p);
}
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, p);
TAILQ_INSERT_TAIL(&dev->files, priv, link);
lockmgr(&dev->dev_lock, LK_RELEASE, 0, p);
kdev->si_drv1 = dev;
return 0;
}
int drm_write(dev_t kdev, struct uio *uio, int ioflag)
{
struct proc *p = curproc;
drm_device_t *dev = kdev->si_drv1;
DRM_DEBUG("pid = %d, device = %p, open_count = %d\n",
p->p_pid, dev->device, dev->open_count);
return 0;
}
/* drm_release is called whenever a process closes /dev/drm*. */
int drm_close(dev_t kdev, int fflag, int devtype, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_file_t *priv;
DRM_DEBUG("pid = %d, device = %p, open_count = %d\n",
p->p_pid, dev->device, dev->open_count);
priv = drm_find_file_by_proc(dev, p);
if (!priv) {
DRM_DEBUG("can't find authenticator\n");
return EINVAL;
}
if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
&& dev->lock.pid == p->p_pid) {
DRM_ERROR("Process %d dead, freeing lock for context %d\n",
p->p_pid,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
drm_lock_free(dev,
&dev->lock.hw_lock->lock,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
/* FIXME: may require heavy-handed reset of
hardware at this point, possibly
processed via a callback to the X
server. */
}
drm_reclaim_buffers(dev, priv->pid);
funsetown(dev->buf_sigio);
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, p);
priv = drm_find_file_by_proc(dev, p);
if (priv) {
priv->refs--;
if (!priv->refs) {
TAILQ_REMOVE(&dev->files, priv, link);
drm_free(priv, sizeof(*priv), DRM_MEM_FILES);
}
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, p);
return 0;
}
/* The drm_read and drm_write_string code (especially that which manages
the circular buffer), is based on Alessandro Rubini's LINUX DEVICE
DRIVERS (Cambridge: O'Reilly, 1998), pages 111-113. */
ssize_t drm_read(dev_t kdev, struct uio *uio, int ioflag)
{
drm_device_t *dev = kdev->si_drv1;
int left;
int avail;
int send;
int cur;
int error = 0;
DRM_DEBUG("%p, %p\n", dev->buf_rp, dev->buf_wp);
while (dev->buf_rp == dev->buf_wp) {
DRM_DEBUG(" sleeping\n");
if (dev->flags & FASYNC) {
return EWOULDBLOCK;
}
error = tsleep(&dev->buf_rp, PZERO|PCATCH, "drmrd", 0);
if (error) {
DRM_DEBUG(" interrupted\n");
return error;
}
DRM_DEBUG(" awake\n");
}
left = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ;
avail = DRM_BSZ - left;
send = DRM_MIN(avail, uio->uio_resid);
while (send) {
if (dev->buf_wp > dev->buf_rp) {
cur = DRM_MIN(send, dev->buf_wp - dev->buf_rp);
} else {
cur = DRM_MIN(send, dev->buf_end - dev->buf_rp);
}
error = uiomove(dev->buf_rp, cur, uio);
if (error)
break;
dev->buf_rp += cur;
if (dev->buf_rp == dev->buf_end) dev->buf_rp = dev->buf;
send -= cur;
}
wakeup(&dev->buf_wp);
return error;
}
int drm_write_string(drm_device_t *dev, const char *s)
{
int left = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ;
int send = strlen(s);
int count;
DRM_DEBUG("%d left, %d to send (%p, %p)\n",
left, send, dev->buf_rp, dev->buf_wp);
if (left == 1 || dev->buf_wp != dev->buf_rp) {
DRM_ERROR("Buffer not empty (%d left, wp = %p, rp = %p)\n",
left,
dev->buf_wp,
dev->buf_rp);
}
while (send) {
if (dev->buf_wp >= dev->buf_rp) {
count = DRM_MIN(send, dev->buf_end - dev->buf_wp);
if (count == left) --count; /* Leave a hole */
} else {
count = DRM_MIN(send, dev->buf_rp - dev->buf_wp - 1);
}
strncpy(dev->buf_wp, s, count);
dev->buf_wp += count;
if (dev->buf_wp == dev->buf_end) dev->buf_wp = dev->buf;
send -= count;
}
if (dev->buf_selecting) {
dev->buf_selecting = 0;
selwakeup(&dev->buf_sel);
}
DRM_DEBUG("dev->buf_sigio=%p\n", dev->buf_sigio);
if (dev->buf_sigio) {
DRM_DEBUG("dev->buf_sigio->sio_pgid=%d\n", dev->buf_sigio->sio_pgid);
pgsigio(dev->buf_sigio, SIGIO, 0);
}
DRM_DEBUG("waking\n");
wakeup(&dev->buf_rp);
return 0;
}
int drm_poll(dev_t kdev, int events, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
int s;
int revents = 0;
s = spldrm();
if (events & (POLLIN | POLLRDNORM)) {
int left = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ;
if (left > 0)
revents |= events & (POLLIN | POLLRDNORM);
else
selrecord(p, &dev->buf_sel);
}
splx(s);
return revents;
}

802
bsd/gamma_dma.c Normal file
View file

@ -0,0 +1,802 @@
/* gamma_dma.c -- DMA support for GMX 2000 -*- c -*-
* Created: Fri Mar 19 14:30:16 1999 by faith@precisioninsight.com
* Revised: Thu Sep 16 12:55:37 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/gamma_dma.c,v 1.9 1999/09/16 16:56:18 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/gamma_dma.c,v 1.1 1999/09/25 14:38:00 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
#include "gamma_drv.h"
#include <linux/interrupt.h> /* For task queue support */
/* WARNING!!! MAGIC NUMBER!!! The number of regions already added to the
kernel must be specified here. Currently, the number is 2. This must
match the order the X server uses for instantiating register regions ,
or must be passed in a new ioctl. */
#define GAMMA_REG(reg) \
(2 \
+ ((reg < 0x1000) \
? 0 \
: ((reg < 0x10000) ? 1 : ((reg < 0x11000) ? 2 : 3))))
#define GAMMA_OFF(reg) \
((reg < 0x1000) \
? reg \
: ((reg < 0x10000) \
? (reg - 0x1000) \
: ((reg < 0x11000) \
? (reg - 0x10000) \
: (reg - 0x11000))))
#define GAMMA_BASE(reg) ((unsigned long)dev->maplist[GAMMA_REG(reg)]->handle)
#define GAMMA_ADDR(reg) (GAMMA_BASE(reg) + GAMMA_OFF(reg))
#define GAMMA_DEREF(reg) *(__volatile__ int *)GAMMA_ADDR(reg)
#define GAMMA_READ(reg) GAMMA_DEREF(reg)
#define GAMMA_WRITE(reg,val) do { GAMMA_DEREF(reg) = val; } while (0)
#define GAMMA_BROADCASTMASK 0x9378
#define GAMMA_COMMANDINTENABLE 0x0c48
#define GAMMA_DMAADDRESS 0x0028
#define GAMMA_DMACOUNT 0x0030
#define GAMMA_FILTERMODE 0x8c00
#define GAMMA_GCOMMANDINTFLAGS 0x0c50
#define GAMMA_GCOMMANDMODE 0x0c40
#define GAMMA_GCOMMANDSTATUS 0x0c60
#define GAMMA_GDELAYTIMER 0x0c38
#define GAMMA_GDMACONTROL 0x0060
#define GAMMA_GINTENABLE 0x0808
#define GAMMA_GINTFLAGS 0x0810
#define GAMMA_INFIFOSPACE 0x0018
#define GAMMA_OUTFIFOWORDS 0x0020
#define GAMMA_OUTPUTFIFO 0x2000
#define GAMMA_SYNC 0x8c40
#define GAMMA_SYNC_TAG 0x0188
static inline void gamma_dma_dispatch(drm_device_t *dev, unsigned long address,
unsigned long length)
{
GAMMA_WRITE(GAMMA_DMAADDRESS, virt_to_phys((void *)address));
while (GAMMA_READ(GAMMA_GCOMMANDSTATUS) != 4)
;
GAMMA_WRITE(GAMMA_DMACOUNT, length / 4);
}
static inline void gamma_dma_quiescent(drm_device_t *dev)
{
while (GAMMA_READ(GAMMA_DMACOUNT))
;
while (GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
;
GAMMA_WRITE(GAMMA_BROADCASTMASK, 3);
GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
GAMMA_WRITE(GAMMA_SYNC, 0);
/* Read from first MX */
do {
while (!GAMMA_READ(GAMMA_OUTFIFOWORDS))
;
} while (GAMMA_READ(GAMMA_OUTPUTFIFO) != GAMMA_SYNC_TAG);
/* Read from second MX */
do {
while (!GAMMA_READ(GAMMA_OUTFIFOWORDS + 0x10000))
;
} while (GAMMA_READ(GAMMA_OUTPUTFIFO + 0x10000) != GAMMA_SYNC_TAG);
}
static inline void gamma_dma_ready(drm_device_t *dev)
{
while (GAMMA_READ(GAMMA_DMACOUNT))
;
}
static inline int gamma_dma_is_ready(drm_device_t *dev)
{
return !GAMMA_READ(GAMMA_DMACOUNT);
}
static void gamma_dma_service(int irq, void *device, struct pt_regs *regs)
{
drm_device_t *dev = (drm_device_t *)device;
drm_device_dma_t *dma = dev->dma;
atomic_inc(&dev->total_irq);
GAMMA_WRITE(GAMMA_GDELAYTIMER, 0xc350/2); /* 0x05S */
GAMMA_WRITE(GAMMA_GCOMMANDINTFLAGS, 8);
GAMMA_WRITE(GAMMA_GINTFLAGS, 0x2001);
if (gamma_dma_is_ready(dev)) {
/* Free previous buffer */
if (test_and_set_bit(0, &dev->dma_flag)) {
atomic_inc(&dma->total_missed_free);
return;
}
if (dma->this_buffer) {
drm_free_buffer(dev, dma->this_buffer);
dma->this_buffer = NULL;
}
clear_bit(0, &dev->dma_flag);
/* Dispatch new buffer */
queue_task(&dev->tq, &tq_immediate);
mark_bh(IMMEDIATE_BH);
}
}
/* Only called by gamma_dma_schedule. */
static int gamma_do_dma(drm_device_t *dev, int locked)
{
unsigned long address;
unsigned long length;
drm_buf_t *buf;
int retcode = 0;
drm_device_dma_t *dma = dev->dma;
#if DRM_DMA_HISTOGRAM
cycles_t dma_start, dma_stop;
#endif
if (test_and_set_bit(0, &dev->dma_flag)) {
atomic_inc(&dma->total_missed_dma);
return -EBUSY;
}
#if DRM_DMA_HISTOGRAM
dma_start = get_cycles();
#endif
if (!dma->next_buffer) {
DRM_ERROR("No next_buffer\n");
clear_bit(0, &dev->dma_flag);
return -EINVAL;
}
buf = dma->next_buffer;
address = (unsigned long)buf->address;
length = buf->used;
DRM_DEBUG("context %d, buffer %d (%ld bytes)\n",
buf->context, buf->idx, length);
if (buf->list == DRM_LIST_RECLAIM) {
drm_clear_next_buffer(dev);
drm_free_buffer(dev, buf);
clear_bit(0, &dev->dma_flag);
return -EINVAL;
}
if (!length) {
DRM_ERROR("0 length buffer\n");
drm_clear_next_buffer(dev);
drm_free_buffer(dev, buf);
clear_bit(0, &dev->dma_flag);
return 0;
}
if (!gamma_dma_is_ready(dev)) {
clear_bit(0, &dev->dma_flag);
return -EBUSY;
}
if (buf->while_locked) {
if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
DRM_ERROR("Dispatching buffer %d from pid %d"
" \"while locked\", but no lock held\n",
buf->idx, buf->pid);
}
} else {
if (!locked && !drm_lock_take(&dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
atomic_inc(&dma->total_missed_lock);
clear_bit(0, &dev->dma_flag);
return -EBUSY;
}
}
if (dev->last_context != buf->context
&& !(dev->queuelist[buf->context]->flags
& _DRM_CONTEXT_PRESERVED)) {
/* PRE: dev->last_context != buf->context */
if (drm_context_switch(dev, dev->last_context, buf->context)) {
drm_clear_next_buffer(dev);
drm_free_buffer(dev, buf);
}
retcode = -EBUSY;
goto cleanup;
/* POST: we will wait for the context
switch and will dispatch on a later call
when dev->last_context == buf->context.
NOTE WE HOLD THE LOCK THROUGHOUT THIS
TIME! */
}
drm_clear_next_buffer(dev);
buf->pending = 1;
buf->waiting = 0;
buf->list = DRM_LIST_PEND;
#if DRM_DMA_HISTOGRAM
buf->time_dispatched = get_cycles();
#endif
gamma_dma_dispatch(dev, address, length);
drm_free_buffer(dev, dma->this_buffer);
dma->this_buffer = buf;
atomic_add(length, &dma->total_bytes);
atomic_inc(&dma->total_dmas);
if (!buf->while_locked && !dev->context_flag && !locked) {
if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
DRM_ERROR("\n");
}
}
cleanup:
clear_bit(0, &dev->dma_flag);
#if DRM_DMA_HISTOGRAM
dma_stop = get_cycles();
atomic_inc(&dev->histo.dma[drm_histogram_slot(dma_stop - dma_start)]);
#endif
return retcode;
}
static void gamma_dma_schedule_timer_wrapper(unsigned long dev)
{
gamma_dma_schedule((drm_device_t *)dev, 0);
}
static void gamma_dma_schedule_tq_wrapper(void *dev)
{
gamma_dma_schedule(dev, 0);
}
int gamma_dma_schedule(drm_device_t *dev, int locked)
{
int next;
drm_queue_t *q;
drm_buf_t *buf;
int retcode = 0;
int processed = 0;
int missed;
int expire = 20;
drm_device_dma_t *dma = dev->dma;
#if DRM_DMA_HISTOGRAM
cycles_t schedule_start;
#endif
if (test_and_set_bit(0, &dev->interrupt_flag)) {
/* Not reentrant */
atomic_inc(&dma->total_missed_sched);
return -EBUSY;
}
missed = atomic_read(&dma->total_missed_sched);
#if DRM_DMA_HISTOGRAM
schedule_start = get_cycles();
#endif
again:
if (dev->context_flag) {
clear_bit(0, &dev->interrupt_flag);
return -EBUSY;
}
if (dma->next_buffer) {
/* Unsent buffer that was previously
selected, but that couldn't be sent
because the lock could not be obtained
or the DMA engine wasn't ready. Try
again. */
atomic_inc(&dma->total_tried);
if (!(retcode = gamma_do_dma(dev, locked))) {
atomic_inc(&dma->total_hit);
++processed;
}
} else {
do {
next = drm_select_queue(dev,
gamma_dma_schedule_timer_wrapper);
if (next >= 0) {
q = dev->queuelist[next];
buf = drm_waitlist_get(&q->waitlist);
dma->next_buffer = buf;
dma->next_queue = q;
if (buf && buf->list == DRM_LIST_RECLAIM) {
drm_clear_next_buffer(dev);
drm_free_buffer(dev, buf);
}
}
} while (next >= 0 && !dma->next_buffer);
if (dma->next_buffer) {
if (!(retcode = gamma_do_dma(dev, locked))) {
++processed;
}
}
}
if (--expire) {
if (missed != atomic_read(&dma->total_missed_sched)) {
atomic_inc(&dma->total_lost);
if (gamma_dma_is_ready(dev)) goto again;
}
if (processed && gamma_dma_is_ready(dev)) {
atomic_inc(&dma->total_lost);
processed = 0;
goto again;
}
}
clear_bit(0, &dev->interrupt_flag);
#if DRM_DMA_HISTOGRAM
atomic_inc(&dev->histo.schedule[drm_histogram_slot(get_cycles()
- schedule_start)]);
#endif
return retcode;
}
static int gamma_dma_priority(drm_device_t *dev, drm_dma_t *d)
{
unsigned long address;
unsigned long length;
int must_free = 0;
int retcode = 0;
int i;
int idx;
drm_buf_t *buf;
drm_buf_t *last_buf = NULL;
drm_device_dma_t *dma = dev->dma;
DECLARE_WAITQUEUE(entry, current);
/* Turn off interrupt handling */
while (test_and_set_bit(0, &dev->interrupt_flag)) {
schedule();
if (signal_pending(current)) return -EINTR;
}
if (!(d->flags & _DRM_DMA_WHILE_LOCKED)) {
while (!drm_lock_take(&dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
schedule();
if (signal_pending(current)) {
clear_bit(0, &dev->interrupt_flag);
return -EINTR;
}
}
++must_free;
}
atomic_inc(&dma->total_prio);
for (i = 0; i < d->send_count; i++) {
idx = d->send_indices[i];
if (idx < 0 || idx >= dma->buf_count) {
DRM_ERROR("Index %d (of %d max)\n",
d->send_indices[i], dma->buf_count - 1);
continue;
}
buf = dma->buflist[ idx ];
if (buf->pid != current->pid) {
DRM_ERROR("Process %d using buffer owned by %d\n",
current->pid, buf->pid);
retcode = -EINVAL;
goto cleanup;
}
if (buf->list != DRM_LIST_NONE) {
DRM_ERROR("Process %d using %d's buffer on list %d\n",
current->pid, buf->pid, buf->list);
retcode = -EINVAL;
goto cleanup;
}
/* This isn't a race condition on
buf->list, since our concern is the
buffer reclaim during the time the
process closes the /dev/drm? handle, so
it can't also be doing DMA. */
buf->list = DRM_LIST_PRIO;
buf->used = d->send_sizes[i];
buf->context = d->context;
buf->while_locked = d->flags & _DRM_DMA_WHILE_LOCKED;
address = (unsigned long)buf->address;
length = buf->used;
if (!length) {
DRM_ERROR("0 length buffer\n");
}
if (buf->pending) {
DRM_ERROR("Sending pending buffer:"
" buffer %d, offset %d\n",
d->send_indices[i], i);
retcode = -EINVAL;
goto cleanup;
}
if (buf->waiting) {
DRM_ERROR("Sending waiting buffer:"
" buffer %d, offset %d\n",
d->send_indices[i], i);
retcode = -EINVAL;
goto cleanup;
}
buf->pending = 1;
if (dev->last_context != buf->context
&& !(dev->queuelist[buf->context]->flags
& _DRM_CONTEXT_PRESERVED)) {
add_wait_queue(&dev->context_wait, &entry);
current->state = TASK_INTERRUPTIBLE;
/* PRE: dev->last_context != buf->context */
drm_context_switch(dev, dev->last_context,
buf->context);
/* POST: we will wait for the context
switch and will dispatch on a later call
when dev->last_context == buf->context.
NOTE WE HOLD THE LOCK THROUGHOUT THIS
TIME! */
schedule();
current->state = TASK_RUNNING;
remove_wait_queue(&dev->context_wait, &entry);
if (signal_pending(current)) {
retcode = -EINTR;
goto cleanup;
}
if (dev->last_context != buf->context) {
DRM_ERROR("Context mismatch: %d %d\n",
dev->last_context,
buf->context);
}
}
#if DRM_DMA_HISTOGRAM
buf->time_queued = get_cycles();
buf->time_dispatched = buf->time_queued;
#endif
gamma_dma_dispatch(dev, address, length);
atomic_add(length, &dma->total_bytes);
atomic_inc(&dma->total_dmas);
if (last_buf) {
drm_free_buffer(dev, last_buf);
}
last_buf = buf;
}
cleanup:
if (last_buf) {
gamma_dma_ready(dev);
drm_free_buffer(dev, last_buf);
}
if (must_free && !dev->context_flag) {
if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
DRM_ERROR("\n");
}
}
clear_bit(0, &dev->interrupt_flag);
return retcode;
}
static int gamma_dma_send_buffers(drm_device_t *dev, drm_dma_t *d)
{
DECLARE_WAITQUEUE(entry, current);
drm_buf_t *last_buf = NULL;
int retcode = 0;
drm_device_dma_t *dma = dev->dma;
if (d->flags & _DRM_DMA_BLOCK) {
last_buf = dma->buflist[d->send_indices[d->send_count-1]];
add_wait_queue(&last_buf->dma_wait, &entry);
}
if ((retcode = drm_dma_enqueue(dev, d))) {
if (d->flags & _DRM_DMA_BLOCK)
remove_wait_queue(&last_buf->dma_wait, &entry);
return retcode;
}
gamma_dma_schedule(dev, 0);
if (d->flags & _DRM_DMA_BLOCK) {
DRM_DEBUG("%d waiting\n", current->pid);
current->state = TASK_INTERRUPTIBLE;
for (;;) {
if (!last_buf->waiting
&& !last_buf->pending)
break; /* finished */
schedule();
if (signal_pending(current)) {
retcode = -EINTR; /* Can't restart */
break;
}
}
current->state = TASK_RUNNING;
DRM_DEBUG("%d running\n", current->pid);
remove_wait_queue(&last_buf->dma_wait, &entry);
if (!retcode
|| (last_buf->list==DRM_LIST_PEND && !last_buf->pending)) {
if (!waitqueue_active(&last_buf->dma_wait)) {
drm_free_buffer(dev, last_buf);
}
}
if (retcode) {
DRM_ERROR("ctx%d w%d p%d c%d i%d l%d %d/%d\n",
d->context,
last_buf->waiting,
last_buf->pending,
DRM_WAITCOUNT(dev, d->context),
last_buf->idx,
last_buf->list,
last_buf->pid,
current->pid);
}
}
return retcode;
}
int gamma_dma(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->dev;
drm_device_dma_t *dma = dev->dma;
int retcode = 0;
drm_dma_t d;
copy_from_user_ret(&d, (drm_dma_t *)arg, sizeof(d), -EFAULT);
DRM_DEBUG("%d %d: %d send, %d req\n",
current->pid, d.context, d.send_count, d.request_count);
if (d.context == DRM_KERNEL_CONTEXT || d.context >= dev->queue_slots) {
DRM_ERROR("Process %d using context %d\n",
current->pid, d.context);
return -EINVAL;
}
if (d.send_count < 0 || d.send_count > dma->buf_count) {
DRM_ERROR("Process %d trying to send %d buffers (of %d max)\n",
current->pid, d.send_count, dma->buf_count);
return -EINVAL;
}
if (d.request_count < 0 || d.request_count > dma->buf_count) {
DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
current->pid, d.request_count, dma->buf_count);
return -EINVAL;
}
if (d.send_count) {
if (d.flags & _DRM_DMA_PRIORITY)
retcode = gamma_dma_priority(dev, &d);
else
retcode = gamma_dma_send_buffers(dev, &d);
}
d.granted_count = 0;
if (!retcode && d.request_count) {
retcode = drm_dma_get_buffers(dev, &d);
}
DRM_DEBUG("%d returning, granted = %d\n",
current->pid, d.granted_count);
copy_to_user_ret((drm_dma_t *)arg, &d, sizeof(d), -EFAULT);
return retcode;
}
int gamma_irq_install(drm_device_t *dev, int irq)
{
int retcode;
if (!irq) return -EINVAL;
down(&dev->struct_sem);
if (dev->irq) {
up(&dev->struct_sem);
return -EBUSY;
}
dev->irq = irq;
up(&dev->struct_sem);
DRM_DEBUG("%d\n", irq);
dev->context_flag = 0;
dev->interrupt_flag = 0;
dev->dma_flag = 0;
dev->dma->next_buffer = NULL;
dev->dma->next_queue = NULL;
dev->dma->this_buffer = NULL;
dev->tq.next = NULL;
dev->tq.sync = 0;
dev->tq.routine = gamma_dma_schedule_tq_wrapper;
dev->tq.data = dev;
/* Before installing handler */
GAMMA_WRITE(GAMMA_GCOMMANDMODE, 0);
GAMMA_WRITE(GAMMA_GDMACONTROL, 0);
/* Install handler */
if ((retcode = request_irq(dev->irq,
gamma_dma_service,
0,
dev->devname,
dev))) {
down(&dev->struct_sem);
dev->irq = 0;
up(&dev->struct_sem);
return retcode;
}
/* After installing handler */
GAMMA_WRITE(GAMMA_GINTENABLE, 0x2001);
GAMMA_WRITE(GAMMA_COMMANDINTENABLE, 0x0008);
GAMMA_WRITE(GAMMA_GDELAYTIMER, 0x39090);
return 0;
}
int gamma_irq_uninstall(drm_device_t *dev)
{
int irq;
down(&dev->struct_sem);
irq = dev->irq;
dev->irq = 0;
up(&dev->struct_sem);
if (!irq) return -EINVAL;
DRM_DEBUG("%d\n", irq);
GAMMA_WRITE(GAMMA_GDELAYTIMER, 0);
GAMMA_WRITE(GAMMA_COMMANDINTENABLE, 0);
GAMMA_WRITE(GAMMA_GINTENABLE, 0);
free_irq(irq, dev);
return 0;
}
int gamma_control(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->dev;
drm_control_t ctl;
int retcode;
copy_from_user_ret(&ctl, (drm_control_t *)arg, sizeof(ctl), -EFAULT);
switch (ctl.func) {
case DRM_INST_HANDLER:
if ((retcode = gamma_irq_install(dev, ctl.irq)))
return retcode;
break;
case DRM_UNINST_HANDLER:
if ((retcode = gamma_irq_uninstall(dev)))
return retcode;
break;
default:
return -EINVAL;
}
return 0;
}
int gamma_lock(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->dev;
DECLARE_WAITQUEUE(entry, current);
int ret = 0;
drm_lock_t lock;
drm_queue_t *q;
#if DRM_DMA_HISTOGRAM
cycles_t start;
dev->lck_start = start = get_cycles();
#endif
copy_from_user_ret(&lock, (drm_lock_t *)arg, sizeof(lock), -EFAULT);
if (lock.context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
current->pid, lock.context);
return -EINVAL;
}
DRM_DEBUG("%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
lock.context, current->pid, dev->lock.hw_lock->lock,
lock.flags);
if (lock.context < 0 || lock.context >= dev->queue_count)
return -EINVAL;
q = dev->queuelist[lock.context];
ret = drm_flush_block_and_flush(dev, lock.context, lock.flags);
if (!ret) {
if (_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)
!= lock.context) {
long j = jiffies - dev->lock.lock_time;
if (j > 0 && j <= DRM_LOCK_SLICE) {
/* Can't take lock if we just had it and
there is contention. */
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(j);
}
}
add_wait_queue(&dev->lock.lock_queue, &entry);
for (;;) {
if (!dev->lock.hw_lock) {
/* Device has been unregistered */
ret = -EINTR;
break;
}
if (drm_lock_take(&dev->lock.hw_lock->lock,
lock.context)) {
dev->lock.pid = current->pid;
dev->lock.lock_time = jiffies;
atomic_inc(&dev->total_locks);
atomic_inc(&q->total_locks);
break; /* Got lock */
}
/* Contention */
atomic_inc(&dev->total_sleeps);
current->state = TASK_INTERRUPTIBLE;
schedule();
if (signal_pending(current)) {
ret = -ERESTARTSYS;
break;
}
}
current->state = TASK_RUNNING;
remove_wait_queue(&dev->lock.lock_queue, &entry);
}
drm_flush_unblock(dev, lock.context, lock.flags); /* cleanup phase */
if (!ret) {
if (lock.flags & _DRM_LOCK_READY)
gamma_dma_ready(dev);
if (lock.flags & _DRM_LOCK_QUIESCENT)
gamma_dma_quiescent(dev);
}
DRM_DEBUG("%d %s\n", lock.context, ret ? "interrupted" : "has lock");
#if DRM_DMA_HISTOGRAM
atomic_inc(&dev->histo.lacq[drm_histogram_slot(get_cycles() - start)]);
#endif
return ret;
}

506
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@ -0,0 +1,506 @@
/* gamma.c -- 3dlabs GMX 2000 driver -*- c -*-
* Created: Mon Jan 4 08:58:31 1999 by faith@precisioninsight.com
* Revised: Tue Oct 12 08:51:36 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/gamma_drv.c,v 1.17 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/gamma_drv.c,v 1.1 1999/09/25 14:38:00 dawes Exp $
*
*/
#include "drmP.h"
#include "gamma_drv.h"
#define GAMMA_NAME "gamma"
#define GAMMA_DESC "3dlabs GMX 2000"
#define GAMMA_DATE "19990830"
#define GAMMA_MAJOR 0
#define GAMMA_MINOR 0
#define GAMMA_PATCHLEVEL 5
static drm_device_t gamma_device;
#define CDEV_MAJOR 200
static struct cdevsw gamma_cdevsw = {
/* open */ gamma_open,
/* close */ gamma_close,
/* read */ drm_read,
/* write */ drm_write,
/* ioctl */ gamma_ioctl,
/* poll */ nopoll,
/* mmap */ drm_mmap,
/* strategy */ nostrategy,
/* name */ "gamma",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_TTY | D_TRACKCLOSE,
/* bmaj */ -1
};
static drm_ioctl_desc_t gamma_ioctls[] = {
[DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { gamma_version, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { drm_getunique, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { drm_getmagic, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_busid, 0, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_block, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_unblock, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { gamma_control, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { drm_authmagic, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { drm_addmap, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = { drm_addbufs, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { drm_markbufs, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { drm_infobufs, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { drm_mapbufs, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { drm_freebufs, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { drm_addctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { drm_rmctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { drm_modctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { drm_getctx, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { drm_switchctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { drm_newctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { drm_resctx, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { drm_adddraw, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { drm_rmdraw, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_DMA)] = { gamma_dma, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { gamma_lock, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { gamma_unlock, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_finish, 1, 0 },
};
#define GAMMA_IOCTL_COUNT DRM_ARRAY_SIZE(gamma_ioctls)
static int gamma_setup(drm_device_t *dev)
{
int i;
atomic_set(&dev->ioctl_count, 0);
atomic_set(&dev->vma_count, 0);
dev->buf_use = 0;
atomic_set(&dev->buf_alloc, 0);
drm_dma_setup(dev);
atomic_set(&dev->total_open, 0);
atomic_set(&dev->total_close, 0);
atomic_set(&dev->total_ioctl, 0);
atomic_set(&dev->total_irq, 0);
atomic_set(&dev->total_ctx, 0);
atomic_set(&dev->total_locks, 0);
atomic_set(&dev->total_unlocks, 0);
atomic_set(&dev->total_contends, 0);
atomic_set(&dev->total_sleeps, 0);
for (i = 0; i < DRM_HASH_SIZE; i++) {
dev->magiclist[i].head = NULL;
dev->magiclist[i].tail = NULL;
}
dev->maplist = NULL;
dev->map_count = 0;
dev->vmalist = NULL;
dev->lock.hw_lock = NULL;
dev->lock.lock_queue = 0;
dev->queue_count = 0;
dev->queue_reserved = 0;
dev->queue_slots = 0;
dev->queuelist = NULL;
dev->irq = 0;
dev->context_flag = 0;
dev->interrupt_flag = 0;
dev->dma_flag = 0;
dev->last_context = 0;
dev->last_switch = 0;
dev->last_checked = 0;
callout_init(&dev->timer);
dev->context_wait = 0;
#if DRM_DMA_HISTO
memset(&dev->histo, 0, sizeof(dev->histo));
#endif
timespecclear(&dev->ctx_start);
timespecclear(&dev->lck_start);
dev->buf_rp = dev->buf;
dev->buf_wp = dev->buf;
dev->buf_end = dev->buf + DRM_BSZ;
dev->buf_sigio = NULL;
DRM_DEBUG("\n");
/* The kernel's context could be created here, but is now created
in drm_dma_enqueue. This is more resource-efficient for
hardware that does not do DMA, but may mean that
drm_select_queue fails between the time the interrupt is
initialized and the time the queues are initialized. */
return 0;
}
static int
gamma_takedown(drm_device_t *dev)
{
int i;
drm_magic_entry_t *pt, *next;
drm_map_t *map;
drm_vma_entry_t *vma, *vma_next;
DRM_DEBUG("\n");
if (dev->irq) gamma_irq_uninstall(dev);
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
callout_stop(&dev->timer);
if (dev->devname) {
drm_free(dev->devname, strlen(dev->devname)+1, DRM_MEM_DRIVER);
dev->devname = NULL;
}
if (dev->unique) {
drm_free(dev->unique, strlen(dev->unique)+1, DRM_MEM_DRIVER);
dev->unique = NULL;
dev->unique_len = 0;
}
/* Clear pid list */
for (i = 0; i < DRM_HASH_SIZE; i++) {
for (pt = dev->magiclist[i].head; pt; pt = next) {
next = pt->next;
drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
}
dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
}
/* Clear vma list (only built for debugging) */
if (dev->vmalist) {
for (vma = dev->vmalist; vma; vma = vma_next) {
vma_next = vma->next;
drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
}
dev->vmalist = NULL;
}
/* Clear map area and mtrr information */
if (dev->maplist) {
for (i = 0; i < dev->map_count; i++) {
map = dev->maplist[i];
switch (map->type) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
#ifdef CONFIG_MTRR
if (map->mtrr >= 0) {
int retcode;
retcode = mtrr_del(map->mtrr,
map->offset,
map->size);
DRM_DEBUG("mtrr_del = %d\n", retcode);
}
#endif
drm_ioremapfree(map->handle, map->size);
break;
case _DRM_SHM:
drm_free_pages((unsigned long)map->handle,
drm_order(map->size)
- PAGE_SHIFT,
DRM_MEM_SAREA);
break;
}
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
}
drm_free(dev->maplist,
dev->map_count * sizeof(*dev->maplist),
DRM_MEM_MAPS);
dev->maplist = NULL;
dev->map_count = 0;
}
if (dev->queuelist) {
for (i = 0; i < dev->queue_count; i++) {
drm_waitlist_destroy(&dev->queuelist[i]->waitlist);
if (dev->queuelist[i]) {
drm_free(dev->queuelist[i],
sizeof(*dev->queuelist[0]),
DRM_MEM_QUEUES);
dev->queuelist[i] = NULL;
}
}
drm_free(dev->queuelist,
dev->queue_slots * sizeof(*dev->queuelist),
DRM_MEM_QUEUES);
dev->queuelist = NULL;
}
drm_dma_takedown(dev);
dev->queue_count = 0;
if (dev->lock.hw_lock) {
dev->lock.hw_lock = NULL; /* SHM removed */
dev->lock.pid = 0;
#if 0
wake_up_interruptible(&dev->lock.lock_queue);
#endif
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return 0;
}
/* gamma_init is called via SYSINIT at module load time */
static void
gamma_init(void *arg)
{
drm_device_t *dev = &gamma_device;
DRM_DEBUG("\n");
memset((void *)dev, 0, sizeof(*dev));
simple_lock_init(&dev->count_lock);
lockinit(&dev->dev_lock, PZERO, "drmlk", 0, 0);
#if 0 /* XXX use getenv I guess */
drm_parse_options(gamma);
#endif
#if 0
if ((retcode = misc_register(&gamma_misc))) {
DRM_ERROR("Cannot register \"%s\"\n", GAMMA_NAME);
return retcode;
}
#endif
dev->device = make_dev(&gamma_cdevsw,
/* gamma_misc.minor */ 0,
DRM_DEV_UID,
DRM_DEV_GID,
DRM_DEV_MODE,
GAMMA_NAME);
dev->name = GAMMA_NAME;
drm_mem_init();
drm_proc_init(dev);
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
GAMMA_NAME,
GAMMA_MAJOR,
GAMMA_MINOR,
GAMMA_PATCHLEVEL,
GAMMA_DATE,
/* gamma_misc.minor */ 0);
}
SYSINIT(gamma_init, SI_SUB_DRIVERS, SI_ORDER_ANY, gamma_init, 0);
/* gamma_cleanup is called via SYSUNINIT at module unload time. */
static void
gamma_cleanup(void *arg)
{
drm_device_t *dev = &gamma_device;
DRM_DEBUG("\n");
drm_proc_cleanup();
#if 0
if (misc_deregister(&gamma_misc)) {
DRM_ERROR("Cannot unload module\n");
} else {
DRM_INFO("Module unloaded\n");
}
#endif
gamma_takedown(dev);
}
SYSUNINIT(gamma_cleanup, SI_SUB_DRIVERS, SI_ORDER_ANY, gamma_cleanup, 0);
#if 0
int gamma_version(struct inode *inode, struct file *filp, unsigned int cmd,
unsigned long arg)
{
drm_version_t version;
int len;
copy_from_user_ret(&version,
(drm_version_t *)arg,
sizeof(version),
-EFAULT);
#define DRM_COPY(name,value) \
len = strlen(value); \
if (len > name##_len) len = name##_len; \
name##_len = strlen(value); \
if (len && name) { \
copy_to_user_ret(name, value, len, -EFAULT); \
}
version.version_major = GAMMA_MAJOR;
version.version_minor = GAMMA_MINOR;
version.version_patchlevel = GAMMA_PATCHLEVEL;
DRM_COPY(version.name, GAMMA_NAME);
DRM_COPY(version.date, GAMMA_DATE);
DRM_COPY(version.desc, GAMMA_DESC);
copy_to_user_ret((drm_version_t *)arg,
&version,
sizeof(version),
-EFAULT);
return 0;
}
#endif
int
gamma_open(dev_t kdev, int flags, int fmt, struct proc *p)
{
drm_device_t *dev = &gamma_device;
int retcode = 0;
DRM_DEBUG("open_count = %d\n", dev->open_count);
if (!(retcode = drm_open_helper(kdev, flags, fmt, p, dev))) {
atomic_inc(&dev->total_open);
simple_lock(&dev->count_lock);
if (!dev->open_count++) {
simple_unlock(&dev->count_lock);
return gamma_setup(dev);
}
simple_unlock(&dev->count_lock);
}
return retcode;
}
int
gamma_close(dev_t kdev, int flags, int fmt, struct proc *p)
{
drm_file_t *priv = kdev->si_drv1;
drm_device_t *dev = priv->dev;
int retcode = 0;
DRM_DEBUG("open_count = %d\n", dev->open_count);
if (!(retcode = drm_close(kdev, flags, fmt, p))) {
atomic_inc(&dev->total_close);
simple_lock(&dev->count_lock);
if (!--dev->open_count) {
if (atomic_read(&dev->ioctl_count) || dev->blocked) {
DRM_ERROR("Device busy: %d %d\n",
atomic_read(&dev->ioctl_count),
dev->blocked);
simple_unlock(&dev->count_lock);
return EBUSY;
}
simple_unlock(&dev->count_lock);
return gamma_takedown(dev);
}
simple_unlock(&dev->count_lock);
}
return retcode;
}
/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. */
int
gamma_ioctl(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
int nr = DRM_IOCTL_NR(cmd);
drm_file_t *priv = kdev->si_drv1;
drm_device_t *dev = priv->dev;
int retcode = 0;
drm_ioctl_desc_t *ioctl;
d_ioctl_t *func;
atomic_inc(&dev->ioctl_count);
atomic_inc(&dev->total_ioctl);
++priv->ioctl_count;
DRM_DEBUG("pid = %d, cmd = 0x%02lx, nr = 0x%02x, auth = %d\n",
p->p_pid, cmd, nr, priv->authenticated);
switch (cmd) {
case FIOSETOWN:
return fsetown(*(int *)data, &dev->buf_sigio);
case FIOGETOWN:
*(int *) data = fgetown(dev->buf_sigio);
return 0;
}
if (nr >= GAMMA_IOCTL_COUNT) {
retcode = EINVAL;
} else {
ioctl = &gamma_ioctls[nr];
func = ioctl->func;
if (!func) {
DRM_DEBUG("no function\n");
retcode = EINVAL;
} else if ((ioctl->root_only && suser(p))
|| (ioctl->auth_needed && !priv->authenticated)) {
retcode = EACCES;
} else {
retcode = (func)(kdev, cmd, data, flags, p);
}
}
atomic_dec(&dev->ioctl_count);
return retcode;
}
int gamma_unlock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_file_t *priv = kdev->si_drv1;
drm_device_t *dev = priv->dev;
drm_lock_t *lockp = (drm_lock_t *) data;
if (lockp->context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
p->p_pid, lockp->context);
return -EINVAL;
}
DRM_DEBUG("%d frees lock (%d holds)\n",
lockp->context,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
atomic_inc(&dev->total_unlocks);
if (_DRM_LOCK_IS_CONT(dev->lock.hw_lock->lock))
atomic_inc(&dev->total_contends);
drm_lock_transfer(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT);
gamma_dma_schedule(dev, 1);
if (!dev->context_flag) {
if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
DRM_ERROR("\n");
}
}
#if DRM_DMA_HISTOGRAM
{
struct timespec ts;
getnanotime(&ts);
timespecsub(&ts, &dev->lck_start);
atomic_inc(&dev->histo.lhld[drm_histogram_slot(&ts)]);
}
#endif
return 0;
}

50
bsd/gamma_drv.h Normal file
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/* gamma_drv.h -- Private header for 3dlabs GMX 2000 driver -*- c -*-
* Created: Mon Jan 4 10:05:05 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 09:24:27 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/gamma_drv.h,v 1.4 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/gamma_drv.h,v 1.1 1999/09/25 14:38:00 dawes Exp $
*
*/
#ifndef _GAMMA_DRV_H_
#define _GAMMA_DRV_H_
/* gamma_drv.c */
extern d_open_t gamma_open;
extern d_close_t gamma_close;
extern d_ioctl_t gamma_ioctl;
extern d_ioctl_t gamma_version;
extern d_ioctl_t gamma_dma;
extern d_ioctl_t gamma_lock;
extern d_ioctl_t gamma_unlock;
extern d_ioctl_t gamma_control;
/* gamma_dma.c */
extern int gamma_dma_schedule(drm_device_t *dev, int locked);
extern int gamma_irq_install(drm_device_t *dev, int irq);
extern int gamma_irq_uninstall(drm_device_t *dev);
#endif

99
bsd/init.c Normal file
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/* init.c -- Setup/Cleanup for DRM -*- c -*-
* Created: Mon Jan 4 08:58:31 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 09:27:02 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/init.c,v 1.3 1999/08/20 15:07:01 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/init.c,v 1.1 1999/09/25 14:38:01 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
int drm_flags = 0;
/* drm_parse_option parses a single option. See description for
drm_parse_drm for details. */
static void drm_parse_option(char *s)
{
char *c, *r;
DRM_DEBUG("\"%s\"\n", s);
if (!s || !*s) return;
for (c = s; *c && *c != ':'; c++); /* find : or \0 */
if (*c) r = c + 1; else r = NULL; /* remember remainder */
*c = '\0'; /* terminate */
if (!strcmp(s, "noctx")) {
drm_flags |= DRM_FLAG_NOCTX;
DRM_INFO("Server-mediated context switching OFF\n");
return;
}
if (!strcmp(s, "debug")) {
drm_flags |= DRM_FLAG_DEBUG;
DRM_INFO("Debug messages ON\n");
return;
}
DRM_ERROR("\"%s\" is not a valid option\n", s);
return;
}
/* drm_parse_options parse the insmod "drm=" options, or the command-line
* options passed to the kernel via LILO. The grammar of the format is as
* follows:
*
* drm ::= 'drm=' option_list
* option_list ::= option [ ';' option_list ]
* option ::= 'device:' major
* | 'debug'
* | 'noctx'
* major ::= INTEGER
*
* Note that 's' contains option_list without the 'drm=' part.
*
* device=major,minor specifies the device number used for /dev/drm
* if major == 0 then the misc device is used
* if major == 0 and minor == 0 then dynamic misc allocation is used
* debug=on specifies that debugging messages will be printk'd
* debug=trace specifies that each function call will be logged via printk
* debug=off turns off all debugging options
*
*/
void drm_parse_options(char *s)
{
char *h, *t, *n;
DRM_DEBUG("\"%s\"\n", s ?: "");
if (!s || !*s) return;
for (h = t = n = s; h && *h; h = n) {
for (; *t && *t != ';'; t++); /* find ; or \0 */
if (*t) n = t + 1; else n = NULL; /* remember next */
*t = '\0'; /* terminate */
drm_parse_option(h); /* parse */
}
}

120
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/* ioctl.c -- IOCTL processing for DRM -*- c -*-
* Created: Fri Jan 8 09:01:26 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 09:27:02 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/ioctl.c,v 1.3 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/ioctl.c,v 1.1 1999/09/25 14:38:01 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
#include <sys/bus.h>
#include <pci/pcivar.h>
int
drm_irq_busid(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_irq_busid_t id;
devclass_t pci;
device_t bus, dev;
device_t *kids;
int error, i, num_kids;
id = *(drm_irq_busid_t *) data;
pci = devclass_find("pci");
if (!pci)
return ENOENT;
bus = devclass_get_device(pci, id.busnum);
if (!bus)
return ENOENT;
error = device_get_children(bus, &kids, &num_kids);
if (error)
return error;
dev = 0;
for (i = 0; i < num_kids; i++) {
dev = kids[i];
if (pci_get_slot(dev) == id.devnum
&& pci_get_function(dev) == id.funcnum)
break;
}
free(kids, M_TEMP);
if (i != num_kids)
id.irq = pci_get_irq(dev);
else
id.irq = 0;
DRM_DEBUG("%d:%d:%d => IRQ %d\n",
id.busnum, id.devnum, id.funcnum, id.irq);
*(drm_irq_busid_t *) data = id;
return 0;
}
int
drm_getunique(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_unique_t u;
int error;
u = *(drm_unique_t *) data;
if (u.unique_len >= dev->unique_len) {
error = copyout(dev->unique, u.unique, dev->unique_len);
if (error)
return error;
}
u.unique_len = dev->unique_len;
*(drm_unique_t *) data = u;
return 0;
}
int
drm_setunique(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_unique_t u;
int error;
if (dev->unique_len || dev->unique) return EBUSY;
u = *(drm_unique_t *) data;
dev->unique_len = u.unique_len;
dev->unique = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER);
error = copyin(u.unique, dev->unique, dev->unique_len);
if (error)
return error;
dev->unique[dev->unique_len] = '\0';
dev->devname = drm_alloc(strlen(dev->name) + strlen(dev->unique) + 2,
DRM_MEM_DRIVER);
sprintf(dev->devname, "%s@%s", dev->name, dev->unique);
return 0;
}

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/* lists.c -- Buffer list handling routines -*- c -*-
* Created: Mon Apr 19 20:54:22 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 09:27:01 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/lists.c,v 1.3 1999/08/20 15:07:02 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/lists.c,v 1.1 1999/09/25 14:38:01 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
int drm_waitlist_create(drm_waitlist_t *bl, int count)
{
DRM_DEBUG("%d\n", count);
if (bl->count) return EINVAL;
bl->count = count;
bl->bufs = drm_alloc((bl->count + 2) * sizeof(*bl->bufs),
DRM_MEM_BUFLISTS);
bl->rp = bl->bufs;
bl->wp = bl->bufs;
bl->end = &bl->bufs[bl->count+1];
simple_lock_init(&bl->write_lock);
simple_lock_init(&bl->read_lock);
return 0;
}
int drm_waitlist_destroy(drm_waitlist_t *bl)
{
DRM_DEBUG("\n");
if (bl->rp != bl->wp) return EINVAL;
if (bl->bufs) drm_free(bl->bufs,
(bl->count + 2) * sizeof(*bl->bufs),
DRM_MEM_BUFLISTS);
bl->count = 0;
bl->bufs = NULL;
bl->rp = NULL;
bl->wp = NULL;
bl->end = NULL;
return 0;
}
int drm_waitlist_put(drm_waitlist_t *bl, drm_buf_t *buf)
{
int left;
int s;
left = DRM_LEFTCOUNT(bl);
DRM_DEBUG("put %d (%d left, rp = %p, wp = %p)\n",
buf->idx, left, bl->rp, bl->wp);
if (!left) {
DRM_ERROR("Overflow while adding buffer %d from pid %d\n",
buf->idx, buf->pid);
return EINVAL;
}
#if DRM_DMA_HISTOGRAM
getnanotime(&buf->time_queued);
#endif
buf->list = DRM_LIST_WAIT;
simple_lock(&bl->write_lock);
s = spldrm();
*bl->wp = buf;
if (++bl->wp >= bl->end) bl->wp = bl->bufs;
splx(s);
simple_unlock(&bl->write_lock);
return 0;
}
drm_buf_t *drm_waitlist_get(drm_waitlist_t *bl)
{
drm_buf_t *buf;
int s;
simple_lock(&bl->read_lock);
s = spldrm();
buf = *bl->rp;
if (bl->rp == bl->wp) {
splx(s);
simple_unlock(&bl->read_lock);
return NULL;
}
if (++bl->rp >= bl->end) bl->rp = bl->bufs;
splx(s);
simple_unlock(&bl->read_lock);
DRM_DEBUG("get %d\n", buf->idx);
return buf;
}
int drm_freelist_create(drm_freelist_t *bl, int count)
{
DRM_DEBUG("\n");
atomic_set(&bl->count, 0);
bl->next = NULL;
bl->waiting = 0;
bl->low_mark = 0;
bl->high_mark = 0;
atomic_set(&bl->wfh, 0);
++bl->initialized;
return 0;
}
int drm_freelist_destroy(drm_freelist_t *bl)
{
DRM_DEBUG("\n");
atomic_set(&bl->count, 0);
bl->next = NULL;
return 0;
}
int drm_freelist_put(drm_device_t *dev, drm_freelist_t *bl, drm_buf_t *buf)
{
unsigned int old;
unsigned int new;
char failed;
int count = 0;
drm_device_dma_t *dma = dev->dma;
if (!dma) {
DRM_ERROR("No DMA support\n");
return 1;
}
if (buf->waiting || buf->pending || buf->list == DRM_LIST_FREE) {
DRM_ERROR("Freed buffer %d: w%d, p%d, l%d\n",
buf->idx, buf->waiting, buf->pending, buf->list);
}
DRM_DEBUG("%d, count = %d, wfh = %d, w%d, p%d\n",
buf->idx, atomic_read(&bl->count), atomic_read(&bl->wfh),
buf->waiting, buf->pending);
if (!bl) return 1;
#if DRM_DMA_HISTOGRAM
getnanotime(&buf->time_freed);
drm_histogram_compute(dev, buf);
#endif
buf->list = DRM_LIST_FREE;
do {
old = (unsigned long)bl->next;
buf->next = (void *)old;
new = (unsigned long)buf;
_DRM_CAS(&bl->next, old, new, failed);
if (++count > DRM_LOOPING_LIMIT) {
DRM_ERROR("Looping\n");
return 1;
}
} while (failed);
atomic_inc(&bl->count);
if (atomic_read(&bl->count) > dma->buf_count) {
DRM_ERROR("%d of %d buffers free after addition of %d\n",
atomic_read(&bl->count), dma->buf_count, buf->idx);
return 1;
}
/* Check for high water mark */
if (atomic_read(&bl->wfh) && atomic_read(&bl->count)>=bl->high_mark) {
atomic_set(&bl->wfh, 0);
if (bl->waiting)
wakeup(&bl->waiting);
}
return 0;
}
static drm_buf_t *drm_freelist_try(drm_freelist_t *bl)
{
unsigned int old;
unsigned int new;
char failed;
drm_buf_t *buf;
int count = 0;
if (!bl) return NULL;
/* Get buffer */
do {
old = (unsigned int)bl->next;
if (!old) {
return NULL;
}
new = (unsigned long)bl->next->next;
_DRM_CAS(&bl->next, old, new, failed);
if (++count > DRM_LOOPING_LIMIT) {
DRM_ERROR("Looping\n");
return NULL;
}
} while (failed);
atomic_dec(&bl->count);
buf = (drm_buf_t *)old;
buf->next = NULL;
buf->list = DRM_LIST_NONE;
DRM_DEBUG("%d, count = %d, wfh = %d, w%d, p%d\n",
buf->idx, atomic_read(&bl->count), atomic_read(&bl->wfh),
buf->waiting, buf->pending);
if (buf->waiting || buf->pending) {
DRM_ERROR("Free buffer %d: w%d, p%d, l%d\n",
buf->idx, buf->waiting, buf->pending, buf->list);
}
return buf;
}
drm_buf_t *drm_freelist_get(drm_freelist_t *bl, int block)
{
drm_buf_t *buf = NULL;
int error;
if (!bl || !bl->initialized) return NULL;
/* Check for low water mark */
if (atomic_read(&bl->count) <= bl->low_mark) /* Became low */
atomic_set(&bl->wfh, 1);
if (atomic_read(&bl->wfh)) {
DRM_DEBUG("Block = %d, count = %d, wfh = %d\n",
block, atomic_read(&bl->count),
atomic_read(&bl->wfh));
if (block) {
atomic_inc(&bl->waiting);
for (;;) {
if (!atomic_read(&bl->wfh)
&& (buf = drm_freelist_try(bl))) break;
error = tsleep(&bl->waiting, PZERO|PCATCH,
"drmfg", 0);
if (error)
break;
}
atomic_dec(&bl->waiting);
}
return buf;
}
DRM_DEBUG("Count = %d, wfh = %d\n",
atomic_read(&bl->count), atomic_read(&bl->wfh));
return drm_freelist_try(bl);
}

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/* lock.c -- IOCTLs for locking -*- c -*-
* Created: Tue Feb 2 08:37:54 1999 by faith@precisioninsight.com
* Revised: Tue Oct 12 08:51:06 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/lock.c,v 1.5 1999/08/30 13:05:00 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/lock.c,v 1.1 1999/09/25 14:38:01 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
int
drm_block(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
DRM_DEBUG("\n");
return 0;
}
int
drm_unblock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
DRM_DEBUG("\n");
return 0;
}
int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context)
{
unsigned int old;
unsigned int new;
char failed;
DRM_DEBUG("%d attempts\n", context);
do {
old = *lock;
if (old & _DRM_LOCK_HELD) new = old | _DRM_LOCK_CONT;
else new = context | _DRM_LOCK_HELD;
_DRM_CAS(lock, old, new, failed);
} while (failed);
if (_DRM_LOCKING_CONTEXT(old) == context) {
if (old & _DRM_LOCK_HELD) {
if (context != DRM_KERNEL_CONTEXT) {
DRM_ERROR("%d holds heavyweight lock\n",
context);
}
return 0;
}
}
if (new == (context | _DRM_LOCK_HELD)) {
/* Have lock */
DRM_DEBUG("%d\n", context);
return 1;
}
DRM_DEBUG("%d unable to get lock held by %d\n",
context, _DRM_LOCKING_CONTEXT(old));
return 0;
}
/* This takes a lock forcibly and hands it to context. Should ONLY be used
inside *_unlock to give lock to kernel before calling *_dma_schedule. */
int drm_lock_transfer(drm_device_t *dev,
__volatile__ unsigned int *lock, unsigned int context)
{
unsigned int old;
unsigned int new;
char failed;
dev->lock.pid = 0;
do {
old = *lock;
new = context | _DRM_LOCK_HELD;
_DRM_CAS(lock, old, new, failed);
} while (failed);
DRM_DEBUG("%d => %d\n", _DRM_LOCKING_CONTEXT(old), context);
return 1;
}
int drm_lock_free(drm_device_t *dev,
__volatile__ unsigned int *lock, unsigned int context)
{
unsigned int old;
unsigned int new;
char failed;
pid_t pid = dev->lock.pid;
DRM_DEBUG("%d\n", context);
dev->lock.pid = 0;
do {
old = *lock;
new = 0;
_DRM_CAS(lock, old, new, failed);
} while (failed);
if (_DRM_LOCK_IS_HELD(old) && _DRM_LOCKING_CONTEXT(old) != context) {
DRM_ERROR("%d freed heavyweight lock held by %d (pid %d)\n",
context,
_DRM_LOCKING_CONTEXT(old),
pid);
return 1;
}
wakeup(&dev->lock.lock_queue);
return 0;
}
static int drm_flush_queue(drm_device_t *dev, int context)
{
int ret = 0;
int error;
drm_queue_t *q = dev->queuelist[context];
DRM_DEBUG("\n");
atomic_inc(&q->use_count);
if (atomic_read(&q->use_count) > 1) {
atomic_inc(&q->block_write);
atomic_inc(&q->block_count);
error = tsleep(&q->flush_queue, PCATCH|PZERO, "drmfq", 0);
if (error)
return error;
atomic_dec(&q->block_count);
}
atomic_dec(&q->use_count);
atomic_inc(&q->total_flushed);
/* NOTE: block_write is still incremented!
Use drm_flush_unlock_queue to decrement. */
return ret;
}
static int drm_flush_unblock_queue(drm_device_t *dev, int context)
{
drm_queue_t *q = dev->queuelist[context];
DRM_DEBUG("\n");
atomic_inc(&q->use_count);
if (atomic_read(&q->use_count) > 1) {
if (atomic_read(&q->block_write)) {
atomic_dec(&q->block_write);
wakeup(&q->write_queue);
}
}
atomic_dec(&q->use_count);
return 0;
}
int drm_flush_block_and_flush(drm_device_t *dev, int context,
drm_lock_flags_t flags)
{
int ret = 0;
int i;
DRM_DEBUG("\n");
if (flags & _DRM_LOCK_FLUSH) {
ret = drm_flush_queue(dev, DRM_KERNEL_CONTEXT);
if (!ret) ret = drm_flush_queue(dev, context);
}
if (flags & _DRM_LOCK_FLUSH_ALL) {
for (i = 0; !ret && i < dev->queue_count; i++) {
ret = drm_flush_queue(dev, i);
}
}
return ret;
}
int drm_flush_unblock(drm_device_t *dev, int context, drm_lock_flags_t flags)
{
int ret = 0;
int i;
DRM_DEBUG("\n");
if (flags & _DRM_LOCK_FLUSH) {
ret = drm_flush_unblock_queue(dev, DRM_KERNEL_CONTEXT);
if (!ret) ret = drm_flush_unblock_queue(dev, context);
}
if (flags & _DRM_LOCK_FLUSH_ALL) {
for (i = 0; !ret && i < dev->queue_count; i++) {
ret = drm_flush_unblock_queue(dev, i);
}
}
return ret;
}
int drm_finish(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
int ret = 0;
drm_lock_t lock;
DRM_DEBUG("\n");
lock = *(drm_lock_t *) data;
ret = drm_flush_block_and_flush(dev, lock.context, lock.flags);
drm_flush_unblock(dev, lock.context, lock.flags);
return ret;
}

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/* memory.c -- Memory management wrappers for DRM -*- c -*-
* Created: Thu Feb 4 14:00:34 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 13:04:33 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/memory.c,v 1.4 1999/08/20 20:00:53 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/memory.c,v 1.1 1999/09/25 14:38:02 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
#include <vm/vm.h>
#include <vm/pmap.h>
MALLOC_DEFINE(M_DRM, "drm", "DRM Data Structures");
typedef struct drm_mem_stats {
const char *name;
int succeed_count;
int free_count;
int fail_count;
unsigned long bytes_allocated;
unsigned long bytes_freed;
} drm_mem_stats_t;
#ifdef SMP
static struct simplelock drm_mem_lock;
#endif
static unsigned long drm_ram_available = 0;
static unsigned long drm_ram_used = 0;
static drm_mem_stats_t drm_mem_stats[] = {
[DRM_MEM_DMA] = { "dmabufs" },
[DRM_MEM_SAREA] = { "sareas" },
[DRM_MEM_DRIVER] = { "driver" },
[DRM_MEM_MAGIC] = { "magic" },
[DRM_MEM_IOCTLS] = { "ioctltab" },
[DRM_MEM_MAPS] = { "maplist" },
[DRM_MEM_VMAS] = { "vmalist" },
[DRM_MEM_BUFS] = { "buflist" },
[DRM_MEM_SEGS] = { "seglist" },
[DRM_MEM_PAGES] = { "pagelist" },
[DRM_MEM_FILES] = { "files" },
[DRM_MEM_QUEUES] = { "queues" },
[DRM_MEM_CMDS] = { "commands" },
[DRM_MEM_MAPPINGS] = { "mappings" },
[DRM_MEM_BUFLISTS] = { "buflists" },
{ NULL, 0, } /* Last entry must be null */
};
void drm_mem_init(void)
{
drm_mem_stats_t *mem;
for (mem = drm_mem_stats; mem->name; ++mem) {
mem->succeed_count = 0;
mem->free_count = 0;
mem->fail_count = 0;
mem->bytes_allocated = 0;
mem->bytes_freed = 0;
}
drm_ram_available = 0; /* si.totalram; */
drm_ram_used = 0;
}
/* drm_mem_info is called whenever a process reads /dev/drm/mem. */
static int _drm_mem_info SYSCTL_HANDLER_ARGS
{
drm_mem_stats_t *pt;
char buf[128];
int error;
DRM_SYSCTL_PRINT(" total counts "
" | outstanding \n");
DRM_SYSCTL_PRINT("type alloc freed fail bytes freed"
" | allocs bytes\n\n");
DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu |\n",
"system", 0, 0, 0, drm_ram_available);
DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu |\n",
"locked", 0, 0, 0, drm_ram_used);
DRM_SYSCTL_PRINT("\n");
for (pt = drm_mem_stats; pt->name; pt++) {
DRM_SYSCTL_PRINT("%-9.9s %5d %5d %4d %10lu %10lu | %6d %10ld\n",
pt->name,
pt->succeed_count,
pt->free_count,
pt->fail_count,
pt->bytes_allocated,
pt->bytes_freed,
pt->succeed_count - pt->free_count,
(long)pt->bytes_allocated
- (long)pt->bytes_freed);
}
SYSCTL_OUT(req, "", 1);
return 0;
}
int drm_mem_info SYSCTL_HANDLER_ARGS
{
int ret;
simple_lock(&drm_mem_lock);
ret = _drm_mem_info(oidp, arg1, arg2, req);
simple_unlock(&drm_mem_lock);
return ret;
}
void *drm_alloc(size_t size, int area)
{
void *pt;
if (!size) {
DRM_MEM_ERROR(area, "Allocating 0 bytes\n");
return NULL;
}
if (!(pt = malloc(size, M_DRM, M_NOWAIT))) {
simple_lock(&drm_mem_lock);
++drm_mem_stats[area].fail_count;
simple_unlock(&drm_mem_lock);
return NULL;
}
simple_lock(&drm_mem_lock);
++drm_mem_stats[area].succeed_count;
drm_mem_stats[area].bytes_allocated += size;
simple_unlock(&drm_mem_lock);
return pt;
}
void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area)
{
void *pt;
if (!(pt = drm_alloc(size, area))) return NULL;
if (oldpt && oldsize) {
memcpy(pt, oldpt, oldsize);
drm_free(oldpt, oldsize, area);
}
return pt;
}
char *drm_strdup(const char *s, int area)
{
char *pt;
int length = s ? strlen(s) : 0;
if (!(pt = drm_alloc(length+1, area))) return NULL;
strcpy(pt, s);
return pt;
}
void drm_strfree(char *s, int area)
{
unsigned int size;
if (!s) return;
size = 1 + (s ? strlen(s) : 0);
drm_free((void *)s, size, area);
}
void drm_free(void *pt, size_t size, int area)
{
int alloc_count;
int free_count;
if (!pt) DRM_MEM_ERROR(area, "Attempt to free NULL pointer\n");
else free(pt, M_DRM);
simple_lock(&drm_mem_lock);
drm_mem_stats[area].bytes_freed += size;
free_count = ++drm_mem_stats[area].free_count;
alloc_count = drm_mem_stats[area].succeed_count;
simple_unlock(&drm_mem_lock);
if (free_count > alloc_count) {
DRM_MEM_ERROR(area, "Excess frees: %d frees, %d allocs\n",
free_count, alloc_count);
}
}
unsigned long drm_alloc_pages(int order, int area)
{
vm_offset_t address;
unsigned long bytes = PAGE_SIZE << order;
unsigned long addr;
unsigned int sz;
simple_lock(&drm_mem_lock);
if (drm_ram_used > +(DRM_RAM_PERCENT * drm_ram_available) / 100) {
simple_unlock(&drm_mem_lock);
return 0;
}
simple_unlock(&drm_mem_lock);
address = (vm_offset_t) contigmalloc(1<<order, M_DRM, M_WAITOK, 0, ~0, 1, 0);
if (!address) {
simple_lock(&drm_mem_lock);
++drm_mem_stats[area].fail_count;
simple_unlock(&drm_mem_lock);
return 0;
}
simple_lock(&drm_mem_lock);
++drm_mem_stats[area].succeed_count;
drm_mem_stats[area].bytes_allocated += bytes;
drm_ram_used += bytes;
simple_unlock(&drm_mem_lock);
/* Zero outside the lock */
memset((void *)address, 0, bytes);
/* Reserve */
for (addr = address, sz = bytes;
sz > 0;
addr += PAGE_SIZE, sz -= PAGE_SIZE) {
/* mem_map_reserve(MAP_NR(addr));*/
}
return address;
}
void drm_free_pages(unsigned long address, int order, int area)
{
unsigned long bytes = PAGE_SIZE << order;
int alloc_count;
int free_count;
unsigned long addr;
unsigned int sz;
if (!address) {
DRM_MEM_ERROR(area, "Attempt to free address 0\n");
} else {
/* Unreserve */
for (addr = address, sz = bytes;
sz > 0;
addr += PAGE_SIZE, sz -= PAGE_SIZE) {
/* mem_map_unreserve(MAP_NR(addr));*/
}
contigfree((void *) address, bytes, M_DRM);
}
simple_lock(&drm_mem_lock);
free_count = ++drm_mem_stats[area].free_count;
alloc_count = drm_mem_stats[area].succeed_count;
drm_mem_stats[area].bytes_freed += bytes;
drm_ram_used -= bytes;
simple_unlock(&drm_mem_lock);
if (free_count > alloc_count) {
DRM_MEM_ERROR(area,
"Excess frees: %d frees, %d allocs\n",
free_count, alloc_count);
}
}
void *drm_ioremap(unsigned long offset, unsigned long size)
{
void *pt;
if (!size) {
DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
"Mapping 0 bytes at 0x%08lx\n", offset);
return NULL;
}
if (!(pt = pmap_mapdev(offset, size))) {
simple_lock(&drm_mem_lock);
++drm_mem_stats[DRM_MEM_MAPPINGS].fail_count;
simple_unlock(&drm_mem_lock);
return NULL;
}
simple_lock(&drm_mem_lock);
++drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
drm_mem_stats[DRM_MEM_MAPPINGS].bytes_allocated += size;
simple_unlock(&drm_mem_lock);
return pt;
}
void drm_ioremapfree(void *pt, unsigned long size)
{
int alloc_count;
int free_count;
if (!pt)
DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
"Attempt to free NULL pointer\n");
else
pmap_unmapdev((vm_offset_t) pt, size);
simple_lock(&drm_mem_lock);
drm_mem_stats[DRM_MEM_MAPPINGS].bytes_freed += size;
free_count = ++drm_mem_stats[DRM_MEM_MAPPINGS].free_count;
alloc_count = drm_mem_stats[DRM_MEM_MAPPINGS].succeed_count;
simple_unlock(&drm_mem_lock);
if (free_count > alloc_count) {
DRM_MEM_ERROR(DRM_MEM_MAPPINGS,
"Excess frees: %d frees, %d allocs\n",
free_count, alloc_count);
}
}

568
bsd/proc.c Normal file
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@ -0,0 +1,568 @@
/* proc.c -- /proc support for DRM -*- c -*-
* Created: Mon Jan 11 09:48:47 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 11:31:48 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/proc.c,v 1.4 1999/08/20 15:36:46 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/proc.c,v 1.1 1999/09/25 14:38:02 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
static struct proc_dir_entry *drm_root = NULL;
static struct proc_dir_entry *drm_dev_root = NULL;
static char drm_slot_name[64];
static int drm_name_info(char *buf, char **start, off_t offset,
int len, int *eof, void *data);
static int drm_vm_info(char *buf, char **start, off_t offset,
int len, int *eof, void *data);
static int drm_clients_info(char *buf, char **start, off_t offset,
int len, int *eof, void *data);
static int drm_queues_info(char *buf, char **start, off_t offset,
int len, int *eof, void *data);
static int drm_bufs_info(char *buf, char **start, off_t offset,
int len, int *eof, void *data);
#if DRM_DEBUG_CODE
static int drm_vma_info(char *buf, char **start, off_t offset,
int len, int *eof, void *data);
#endif
#if DRM_DMA_HISTOGRAM
static int drm_histo_info(char *buf, char **start, off_t offset,
int len, int *eof, void *data);
#endif
struct drm_proc_list {
const char *name;
int (*f)(char *, char **, off_t, int, int *, void *);
} drm_proc_list[] = {
{ "name", drm_name_info },
{ "mem", drm_mem_info },
{ "vm", drm_vm_info },
{ "clients", drm_clients_info },
{ "queues", drm_queues_info },
{ "bufs", drm_bufs_info },
#if DRM_DEBUG_CODE
{ "vma", drm_vma_info },
#endif
#if DRM_DMA_HISTOGRAM
{ "histo", drm_histo_info },
#endif
};
#define DRM_PROC_ENTRIES (sizeof(drm_proc_list)/sizeof(drm_proc_list[0]))
int drm_proc_init(drm_device_t *dev)
{
struct proc_dir_entry *ent;
int i, j;
drm_root = create_proc_entry("graphics", S_IFDIR, NULL);
if (!drm_root) {
DRM_ERROR("Cannot create /proc/graphics\n");
return -1;
}
/* Instead of doing this search, we should
add some global support for /proc/graphics. */
for (i = 0; i < 8; i++) {
sprintf(drm_slot_name, "graphics/%d", i);
drm_dev_root = create_proc_entry(drm_slot_name, S_IFDIR, NULL);
if (!drm_dev_root) {
DRM_ERROR("Cannot create /proc/%s\n", drm_slot_name);
remove_proc_entry("graphics", NULL);
}
if (drm_dev_root->nlink == 2) break;
drm_dev_root = NULL;
}
if (!drm_dev_root) {
DRM_ERROR("Cannot find slot in /proc/graphics\n");
return -1;
}
for (i = 0; i < DRM_PROC_ENTRIES; i++) {
ent = create_proc_entry(drm_proc_list[i].name,
S_IFREG|S_IRUGO, drm_dev_root);
if (!ent) {
DRM_ERROR("Cannot create /proc/%s/%s\n",
drm_slot_name, drm_proc_list[i].name);
for (j = 0; j < i; j++)
remove_proc_entry(drm_proc_list[i].name,
drm_dev_root);
remove_proc_entry(drm_slot_name, NULL);
remove_proc_entry("graphics", NULL);
return -1;
}
ent->read_proc = drm_proc_list[i].f;
ent->data = dev;
}
return 0;
}
int drm_proc_cleanup(void)
{
int i;
if (drm_root) {
if (drm_dev_root) {
for (i = 0; i < DRM_PROC_ENTRIES; i++) {
remove_proc_entry(drm_proc_list[i].name,
drm_dev_root);
}
remove_proc_entry(drm_slot_name, NULL);
}
remove_proc_entry("graphics", NULL);
remove_proc_entry(DRM_NAME, NULL);
}
drm_root = drm_dev_root = NULL;
return 0;
}
static int drm_name_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
if (offset > 0) return 0; /* no partial requests */
len = 0;
*eof = 1;
if (dev->unique) {
DRM_PROC_PRINT("%s 0x%x %s\n",
dev->name, dev->device, dev->unique);
} else {
DRM_PROC_PRINT("%s 0x%x\n", dev->name, dev->device);
}
return len;
}
static int _drm_vm_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
drm_map_t *map;
const char *types[] = { "FB", "REG", "SHM" };
const char *type;
int i;
if (offset > 0) return 0; /* no partial requests */
len = 0;
*eof = 1;
DRM_PROC_PRINT("slot offset size type flags "
"address mtrr\n\n");
for (i = 0; i < dev->map_count; i++) {
map = dev->maplist[i];
if (map->type < 0 || map->type > 2) type = "??";
else type = types[map->type];
DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ",
i,
map->offset,
map->size,
type,
map->flags,
(unsigned long)map->handle);
if (map->mtrr < 0) {
DRM_PROC_PRINT("none\n");
} else {
DRM_PROC_PRINT("%4d\n", map->mtrr);
}
}
return len;
}
static int drm_vm_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = _drm_vm_info(buf, start, offset, len, eof, data);
up(&dev->struct_sem);
return ret;
}
static int _drm_queues_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int i;
drm_queue_t *q;
if (offset > 0) return 0; /* no partial requests */
len = 0;
*eof = 1;
DRM_PROC_PRINT(" ctx/flags use fin"
" blk/rw/rwf wait flushed queued"
" locks\n\n");
for (i = 0; i < dev->queue_count; i++) {
q = dev->queuelist[i];
atomic_inc(&q->use_count);
DRM_PROC_PRINT_RET(atomic_dec(&q->use_count),
"%5d/0x%03x %5d %5d"
" %5d/%c%c/%c%c%c %5d %10d %10d %10d\n",
i,
q->flags,
atomic_read(&q->use_count),
atomic_read(&q->finalization),
atomic_read(&q->block_count),
atomic_read(&q->block_read) ? 'r' : '-',
atomic_read(&q->block_write) ? 'w' : '-',
waitqueue_active(&q->read_queue) ? 'r':'-',
waitqueue_active(&q->write_queue) ? 'w':'-',
waitqueue_active(&q->flush_queue) ? 'f':'-',
DRM_BUFCOUNT(&q->waitlist),
atomic_read(&q->total_flushed),
atomic_read(&q->total_queued),
atomic_read(&q->total_locks));
atomic_dec(&q->use_count);
}
return len;
}
static int drm_queues_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = _drm_queues_info(buf, start, offset, len, eof, data);
up(&dev->struct_sem);
return ret;
}
/* drm_bufs_info is called whenever a process reads
/dev/drm/<dev>/bufs. */
static int _drm_bufs_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
drm_device_dma_t *dma = dev->dma;
int i;
if (!dma) return 0;
if (offset > 0) return 0; /* no partial requests */
len = 0;
*eof = 1;
DRM_PROC_PRINT(" o size count free segs pages kB\n\n");
for (i = 0; i <= DRM_MAX_ORDER; i++) {
if (dma->bufs[i].buf_count)
DRM_PROC_PRINT("%2d %8d %5d %5d %5d %5d %5ld\n",
i,
dma->bufs[i].buf_size,
dma->bufs[i].buf_count,
atomic_read(&dma->bufs[i]
.freelist.count),
dma->bufs[i].seg_count,
dma->bufs[i].seg_count
*(1 << dma->bufs[i].page_order),
(dma->bufs[i].seg_count
* (1 << dma->bufs[i].page_order))
* PAGE_SIZE / 1024);
}
DRM_PROC_PRINT("\n");
for (i = 0; i < dma->buf_count; i++) {
if (i && !(i%32)) DRM_PROC_PRINT("\n");
DRM_PROC_PRINT(" %d", dma->buflist[i]->list);
}
DRM_PROC_PRINT("\n");
return len;
}
static int drm_bufs_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = _drm_bufs_info(buf, start, offset, len, eof, data);
up(&dev->struct_sem);
return ret;
}
static int _drm_clients_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
drm_file_t *priv;
if (offset > 0) return 0; /* no partial requests */
len = 0;
*eof = 1;
DRM_PROC_PRINT("a dev pid uid magic ioctls\n\n");
for (priv = dev->file_first; priv; priv = priv->next) {
DRM_PROC_PRINT("%c %3d %5d %5d %10u %10lu\n",
priv->authenticated ? 'y' : 'n',
priv->minor,
priv->pid,
priv->uid,
priv->magic,
priv->ioctl_count);
}
return len;
}
static int drm_clients_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = _drm_clients_info(buf, start, offset, len, eof, data);
up(&dev->struct_sem);
return ret;
}
#if DRM_DEBUG_CODE
static int _drm_vma_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
drm_vma_entry_t *pt;
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
unsigned long i;
struct vm_area_struct *vma;
unsigned long address;
#if defined(__i386__)
unsigned int pgprot;
#endif
if (offset > 0) return 0; /* no partial requests */
len = 0;
*eof = 1;
DRM_PROC_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
atomic_read(&dev->vma_count),
high_memory, virt_to_phys(high_memory));
for (pt = dev->vmalist; pt; pt = pt->next) {
if (!(vma = pt->vma)) continue;
DRM_PROC_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
pt->pid,
vma->vm_start,
vma->vm_end,
vma->vm_flags & VM_READ ? 'r' : '-',
vma->vm_flags & VM_WRITE ? 'w' : '-',
vma->vm_flags & VM_EXEC ? 'x' : '-',
vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
vma->vm_flags & VM_LOCKED ? 'l' : '-',
vma->vm_flags & VM_IO ? 'i' : '-',
vma->vm_offset );
#if defined(__i386__)
pgprot = pgprot_val(vma->vm_page_prot);
DRM_PROC_PRINT(" %c%c%c%c%c%c%c%c%c",
pgprot & _PAGE_PRESENT ? 'p' : '-',
pgprot & _PAGE_RW ? 'w' : 'r',
pgprot & _PAGE_USER ? 'u' : 's',
pgprot & _PAGE_PWT ? 't' : 'b',
pgprot & _PAGE_PCD ? 'u' : 'c',
pgprot & _PAGE_ACCESSED ? 'a' : '-',
pgprot & _PAGE_DIRTY ? 'd' : '-',
pgprot & _PAGE_4M ? 'm' : 'k',
pgprot & _PAGE_GLOBAL ? 'g' : 'l' );
#endif
DRM_PROC_PRINT("\n");
for (i = vma->vm_start; i < vma->vm_end; i += PAGE_SIZE) {
pgd = pgd_offset(vma->vm_mm, i);
pmd = pmd_offset(pgd, i);
pte = pte_offset(pmd, i);
if (pte_present(*pte)) {
address = __pa(pte_page(*pte))
+ (i & (PAGE_SIZE-1));
DRM_PROC_PRINT(" 0x%08lx -> 0x%08lx"
" %c%c%c%c%c\n",
i,
address,
pte_read(*pte) ? 'r' : '-',
pte_write(*pte) ? 'w' : '-',
pte_exec(*pte) ? 'x' : '-',
pte_dirty(*pte) ? 'd' : '-',
pte_young(*pte) ? 'a' : '-' );
} else {
DRM_PROC_PRINT(" 0x%08lx\n", i);
}
}
}
return len;
}
static int drm_vma_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = _drm_vma_info(buf, start, offset, len, eof, data);
up(&dev->struct_sem);
return ret;
}
#endif
#if DRM_DMA_HISTOGRAM
static int _drm_histo_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
drm_device_dma_t *dma = dev->dma;
int i;
unsigned long slot_value = DRM_DMA_HISTOGRAM_INITIAL;
unsigned long prev_value = 0;
drm_buf_t *buffer;
if (offset > 0) return 0; /* no partial requests */
len = 0;
*eof = 1;
DRM_PROC_PRINT("general statistics:\n");
DRM_PROC_PRINT("total %10u\n", atomic_read(&dev->histo.total));
DRM_PROC_PRINT("open %10u\n", atomic_read(&dev->total_open));
DRM_PROC_PRINT("close %10u\n", atomic_read(&dev->total_close));
DRM_PROC_PRINT("ioctl %10u\n", atomic_read(&dev->total_ioctl));
DRM_PROC_PRINT("irq %10u\n", atomic_read(&dev->total_irq));
DRM_PROC_PRINT("ctx %10u\n", atomic_read(&dev->total_ctx));
DRM_PROC_PRINT("\nlock statistics:\n");
DRM_PROC_PRINT("locks %10u\n", atomic_read(&dev->total_locks));
DRM_PROC_PRINT("unlocks %10u\n", atomic_read(&dev->total_unlocks));
DRM_PROC_PRINT("contends %10u\n", atomic_read(&dev->total_contends));
DRM_PROC_PRINT("sleeps %10u\n", atomic_read(&dev->total_sleeps));
if (dma) {
DRM_PROC_PRINT("\ndma statistics:\n");
DRM_PROC_PRINT("prio %10u\n",
atomic_read(&dma->total_prio));
DRM_PROC_PRINT("bytes %10u\n",
atomic_read(&dma->total_bytes));
DRM_PROC_PRINT("dmas %10u\n",
atomic_read(&dma->total_dmas));
DRM_PROC_PRINT("missed:\n");
DRM_PROC_PRINT(" dma %10u\n",
atomic_read(&dma->total_missed_dma));
DRM_PROC_PRINT(" lock %10u\n",
atomic_read(&dma->total_missed_lock));
DRM_PROC_PRINT(" free %10u\n",
atomic_read(&dma->total_missed_free));
DRM_PROC_PRINT(" sched %10u\n",
atomic_read(&dma->total_missed_sched));
DRM_PROC_PRINT("tried %10u\n",
atomic_read(&dma->total_tried));
DRM_PROC_PRINT("hit %10u\n",
atomic_read(&dma->total_hit));
DRM_PROC_PRINT("lost %10u\n",
atomic_read(&dma->total_lost));
buffer = dma->next_buffer;
if (buffer) {
DRM_PROC_PRINT("next_buffer %7d\n", buffer->idx);
} else {
DRM_PROC_PRINT("next_buffer none\n");
}
buffer = dma->this_buffer;
if (buffer) {
DRM_PROC_PRINT("this_buffer %7d\n", buffer->idx);
} else {
DRM_PROC_PRINT("this_buffer none\n");
}
}
DRM_PROC_PRINT("\nvalues:\n");
if (dev->lock.hw_lock) {
DRM_PROC_PRINT("lock 0x%08x\n",
dev->lock.hw_lock->lock);
} else {
DRM_PROC_PRINT("lock none\n");
}
DRM_PROC_PRINT("context_flag 0x%08x\n", dev->context_flag);
DRM_PROC_PRINT("interrupt_flag 0x%08x\n", dev->interrupt_flag);
DRM_PROC_PRINT("dma_flag 0x%08x\n", dev->dma_flag);
DRM_PROC_PRINT("queue_count %10d\n", dev->queue_count);
DRM_PROC_PRINT("last_context %10d\n", dev->last_context);
DRM_PROC_PRINT("last_switch %10lu\n", dev->last_switch);
DRM_PROC_PRINT("last_checked %10d\n", dev->last_checked);
DRM_PROC_PRINT("\n q2d d2c c2f"
" q2c q2f dma sch"
" ctx lacq lhld\n\n");
for (i = 0; i < DRM_DMA_HISTOGRAM_SLOTS; i++) {
DRM_PROC_PRINT("%s %10lu %10u %10u %10u %10u %10u"
" %10u %10u %10u %10u %10u\n",
i == DRM_DMA_HISTOGRAM_SLOTS - 1 ? ">=" : "< ",
i == DRM_DMA_HISTOGRAM_SLOTS - 1
? prev_value : slot_value ,
atomic_read(&dev->histo
.queued_to_dispatched[i]),
atomic_read(&dev->histo
.dispatched_to_completed[i]),
atomic_read(&dev->histo
.completed_to_freed[i]),
atomic_read(&dev->histo
.queued_to_completed[i]),
atomic_read(&dev->histo
.queued_to_freed[i]),
atomic_read(&dev->histo.dma[i]),
atomic_read(&dev->histo.schedule[i]),
atomic_read(&dev->histo.ctx[i]),
atomic_read(&dev->histo.lacq[i]),
atomic_read(&dev->histo.lhld[i]));
prev_value = slot_value;
slot_value = DRM_DMA_HISTOGRAM_NEXT(slot_value);
}
return len;
}
static int drm_histo_info(char *buf, char **start, off_t offset, int len,
int *eof, void *data)
{
drm_device_t *dev = (drm_device_t *)data;
int ret;
down(&dev->struct_sem);
ret = _drm_histo_info(buf, start, offset, len, eof, data);
up(&dev->struct_sem);
return ret;
}
#endif

554
bsd/sysctl.c Normal file
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/* proc.c -- /proc support for DRM -*- c -*-
* Created: Mon Jan 11 09:48:47 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 11:31:48 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI$
* $XFree86$
*
*/
#define __NO_VERSION__
#include "drmP.h"
#include <sys/sysctl.h>
SYSCTL_NODE(_hw, OID_AUTO, graphics, CTLFLAG_RW, 0, "DRI Graphics");
static int drm_name_info SYSCTL_HANDLER_ARGS;
static int drm_vm_info SYSCTL_HANDLER_ARGS;
static int drm_clients_info SYSCTL_HANDLER_ARGS;
static int drm_queues_info SYSCTL_HANDLER_ARGS;
static int drm_bufs_info SYSCTL_HANDLER_ARGS;
#if DRM_DEBUG_CODExx
static int drm_vma_info SYSCTL_HANDLER_ARGS;
#endif
#if DRM_DMA_HISTOGRAM
static int drm_histo_info SYSCTL_HANDLER_ARGS;
#endif
struct drm_sysctl_list {
const char *name;
int (*f) SYSCTL_HANDLER_ARGS;
} drm_sysctl_list[] = {
{ "name", drm_name_info },
{ "mem", drm_mem_info },
{ "vm", drm_vm_info },
{ "clients", drm_clients_info },
{ "queues", drm_queues_info },
{ "bufs", drm_bufs_info },
#if DRM_DEBUG_CODExx
{ "vma", drm_vma_info },
#endif
#if DRM_DMA_HISTOGRAM
{ "histo", drm_histo_info },
#endif
};
#define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
struct drm_sysctl_info {
struct sysctl_oid oids[DRM_SYSCTL_ENTRIES + 1];
struct sysctl_oid_list list;
char name[2];
};
int drm_sysctl_init(drm_device_t *dev)
{
struct drm_sysctl_info *info;
struct sysctl_oid *oid;
struct sysctl_oid *top;
int i;
/* Find the next free slot under hw.graphics */
i = 0;
SLIST_FOREACH(oid, &sysctl__hw_graphics_children, oid_link) {
if (i <= oid->oid_arg2)
i = oid->oid_arg2 + 1;
}
info = drm_alloc(sizeof *info, DRM_MEM_DRIVER);
dev->sysctl = info;
/* Construct the node under hw.graphics */
info->name[0] = '0' + i;
info->name[1] = 0;
oid = &info->oids[DRM_SYSCTL_ENTRIES];
bzero(oid, sizeof(*oid));
oid->oid_parent = &sysctl__hw_graphics_children;
oid->oid_number = OID_AUTO;
oid->oid_kind = CTLTYPE_NODE | CTLFLAG_RW;
oid->oid_arg1 = &info->list;
oid->oid_arg2 = i;
oid->oid_name = info->name;
oid->oid_handler = 0;
oid->oid_fmt = "N";
SLIST_INIT(&info->list);
sysctl_register_oid(oid);
top = oid;
for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
oid = &info->oids[i];
bzero(oid, sizeof(*oid));
oid->oid_parent = top->oid_arg1;
oid->oid_number = OID_AUTO;
oid->oid_kind = CTLTYPE_INT | CTLFLAG_RD;
oid->oid_arg1 = dev;
oid->oid_arg2 = 0;
oid->oid_name = drm_sysctl_list[i].name;
oid->oid_handler = drm_sysctl_list[i].f;
oid->oid_fmt = "A";
sysctl_register_oid(oid);
}
return 0;
}
int drm_sysctl_cleanup(drm_device_t *dev)
{
int i;
DRM_DEBUG("dev->sysctl=%p\n", dev->sysctl);
for (i = 0; i < DRM_SYSCTL_ENTRIES + 1; i++)
sysctl_unregister_oid(&dev->sysctl->oids[i]);
drm_free(dev->sysctl, sizeof *dev->sysctl, DRM_MEM_DRIVER);
dev->sysctl = NULL;
return 0;
}
static int drm_name_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
char buf[128];
int error;
if (dev->unique) {
DRM_SYSCTL_PRINT("%s 0x%x %s\n",
dev->name, dev2udev(dev->device), dev->unique);
} else {
DRM_SYSCTL_PRINT("%s 0x%x\n", dev->name, dev2udev(dev->device));
}
SYSCTL_OUT(req, "", 1);
return 0;
}
static int _drm_vm_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
drm_map_t *map;
const char *types[] = { "FB", "REG", "SHM" };
const char *type;
int i;
char buf[128];
int error;
DRM_SYSCTL_PRINT("slot offset size type flags "
"address mtrr\n\n");
error = SYSCTL_OUT(req, buf, strlen(buf));
if (error) return error;
for (i = 0; i < dev->map_count; i++) {
map = dev->maplist[i];
if (map->type < 0 || map->type > 2) type = "??";
else type = types[map->type];
DRM_SYSCTL_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ",
i,
map->offset,
map->size,
type,
map->flags,
(unsigned long)map->handle);
if (map->mtrr < 0) {
DRM_SYSCTL_PRINT("none\n");
} else {
DRM_SYSCTL_PRINT("%4d\n", map->mtrr);
}
}
SYSCTL_OUT(req, "", 1);
return 0;
}
static int drm_vm_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
int ret;
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
ret = _drm_vm_info(oidp, arg1, arg2, req);
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return ret;
}
static int _drm_queues_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
int i;
drm_queue_t *q;
char buf[128];
int error;
DRM_SYSCTL_PRINT(" ctx/flags use fin"
" blk/rw/rwf wait flushed queued"
" locks\n\n");
for (i = 0; i < dev->queue_count; i++) {
q = dev->queuelist[i];
atomic_inc(&q->use_count);
DRM_SYSCTL_PRINT_RET(atomic_dec(&q->use_count),
"%5d/0x%03x %5d %5d"
" %5d/%c%c/%c%c%c %5d %10d %10d %10d\n",
i,
q->flags,
atomic_read(&q->use_count),
atomic_read(&q->finalization),
atomic_read(&q->block_count),
atomic_read(&q->block_read) ? 'r' : '-',
atomic_read(&q->block_write) ? 'w' : '-',
q->read_queue ? 'r':'-',
q->write_queue ? 'w':'-',
q->flush_queue ? 'f':'-',
DRM_BUFCOUNT(&q->waitlist),
atomic_read(&q->total_flushed),
atomic_read(&q->total_queued),
atomic_read(&q->total_locks));
atomic_dec(&q->use_count);
}
SYSCTL_OUT(req, "", 1);
return 0;
}
static int drm_queues_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
int ret;
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
ret = _drm_queues_info(oidp, arg1, arg2, req);
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return ret;
}
/* drm_bufs_info is called whenever a process reads
/dev/drm/<dev>/bufs. */
static int _drm_bufs_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
drm_device_dma_t *dma = dev->dma;
int i;
char buf[128];
int error;
if (!dma) return 0;
DRM_SYSCTL_PRINT(" o size count free segs pages kB\n\n");
for (i = 0; i <= DRM_MAX_ORDER; i++) {
if (dma->bufs[i].buf_count)
DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
i,
dma->bufs[i].buf_size,
dma->bufs[i].buf_count,
atomic_read(&dma->bufs[i]
.freelist.count),
dma->bufs[i].seg_count,
dma->bufs[i].seg_count
*(1 << dma->bufs[i].page_order),
(dma->bufs[i].seg_count
* (1 << dma->bufs[i].page_order))
* PAGE_SIZE / 1024);
}
DRM_SYSCTL_PRINT("\n");
for (i = 0; i < dma->buf_count; i++) {
if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
DRM_SYSCTL_PRINT(" %d", dma->buflist[i]->list);
}
DRM_SYSCTL_PRINT("\n");
SYSCTL_OUT(req, "", 1);
return 0;
}
static int drm_bufs_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
int ret;
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
ret = _drm_bufs_info(oidp, arg1, arg2, req);
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return ret;
}
static int _drm_clients_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
drm_file_t *priv;
char buf[128];
int error;
DRM_SYSCTL_PRINT("a dev pid uid magic ioctls\n\n");
TAILQ_FOREACH(priv, &dev->files, link) {
DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n",
priv->authenticated ? 'y' : 'n',
priv->minor,
priv->pid,
priv->uid,
priv->magic,
priv->ioctl_count);
}
SYSCTL_OUT(req, "", 1);
return 0;
}
static int drm_clients_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
int ret;
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
ret = _drm_clients_info(oidp, arg1, arg2, req);
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return ret;
}
#if DRM_DEBUG_CODExx
static int _drm_vma_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
drm_vma_entry_t *pt;
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
unsigned long i;
struct vm_area_struct *vma;
unsigned long address;
#if defined(__i386__)
unsigned int pgprot;
#endif
char buf[128];
int error;
DRM_SYSCTL_PRINT("vma use count: %d, high_memory = %p, 0x%08lx\n",
atomic_read(&dev->vma_count),
high_memory, virt_to_phys(high_memory));
for (pt = dev->vmalist; pt; pt = pt->next) {
if (!(vma = pt->vma)) continue;
DRM_SYSCTL_PRINT("\n%5d 0x%08lx-0x%08lx %c%c%c%c%c%c 0x%08lx",
pt->pid,
vma->vm_start,
vma->vm_end,
vma->vm_flags & VM_READ ? 'r' : '-',
vma->vm_flags & VM_WRITE ? 'w' : '-',
vma->vm_flags & VM_EXEC ? 'x' : '-',
vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
vma->vm_flags & VM_LOCKED ? 'l' : '-',
vma->vm_flags & VM_IO ? 'i' : '-',
vma->vm_offset );
#if defined(__i386__)
pgprot = pgprot_val(vma->vm_page_prot);
DRM_SYSCTL_PRINT(" %c%c%c%c%c%c%c%c%c",
pgprot & _PAGE_PRESENT ? 'p' : '-',
pgprot & _PAGE_RW ? 'w' : 'r',
pgprot & _PAGE_USER ? 'u' : 's',
pgprot & _PAGE_PWT ? 't' : 'b',
pgprot & _PAGE_PCD ? 'u' : 'c',
pgprot & _PAGE_ACCESSED ? 'a' : '-',
pgprot & _PAGE_DIRTY ? 'd' : '-',
pgprot & _PAGE_4M ? 'm' : 'k',
pgprot & _PAGE_GLOBAL ? 'g' : 'l' );
#endif
DRM_SYSCTL_PRINT("\n");
for (i = vma->vm_start; i < vma->vm_end; i += PAGE_SIZE) {
pgd = pgd_offset(vma->vm_mm, i);
pmd = pmd_offset(pgd, i);
pte = pte_offset(pmd, i);
if (pte_present(*pte)) {
address = __pa(pte_page(*pte))
+ (i & (PAGE_SIZE-1));
DRM_SYSCTL_PRINT(" 0x%08lx -> 0x%08lx"
" %c%c%c%c%c\n",
i,
address,
pte_read(*pte) ? 'r' : '-',
pte_write(*pte) ? 'w' : '-',
pte_exec(*pte) ? 'x' : '-',
pte_dirty(*pte) ? 'd' : '-',
pte_young(*pte) ? 'a' : '-' );
} else {
DRM_SYSCTL_PRINT(" 0x%08lx\n", i);
}
}
}
SYSCTL_OUT(req, "", 1);
return 0;
}
static int drm_vma_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
int ret;
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
ret = _drm_vma_info(oidp, arg1, arg2, req);
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return ret;
}
#endif
#if DRM_DMA_HISTOGRAM
static int _drm_histo_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
drm_device_dma_t *dma = dev->dma;
int i;
unsigned long slot_value = DRM_DMA_HISTOGRAM_INITIAL;
unsigned long prev_value = 0;
drm_buf_t *buffer;
char buf[128];
int error;
DRM_SYSCTL_PRINT("general statistics:\n");
DRM_SYSCTL_PRINT("total %10u\n", atomic_read(&dev->histo.total));
DRM_SYSCTL_PRINT("open %10u\n", atomic_read(&dev->total_open));
DRM_SYSCTL_PRINT("close %10u\n", atomic_read(&dev->total_close));
DRM_SYSCTL_PRINT("ioctl %10u\n", atomic_read(&dev->total_ioctl));
DRM_SYSCTL_PRINT("irq %10u\n", atomic_read(&dev->total_irq));
DRM_SYSCTL_PRINT("ctx %10u\n", atomic_read(&dev->total_ctx));
DRM_SYSCTL_PRINT("\nlock statistics:\n");
DRM_SYSCTL_PRINT("locks %10u\n", atomic_read(&dev->total_locks));
DRM_SYSCTL_PRINT("unlocks %10u\n", atomic_read(&dev->total_unlocks));
DRM_SYSCTL_PRINT("contends %10u\n", atomic_read(&dev->total_contends));
DRM_SYSCTL_PRINT("sleeps %10u\n", atomic_read(&dev->total_sleeps));
if (dma) {
DRM_SYSCTL_PRINT("\ndma statistics:\n");
DRM_SYSCTL_PRINT("prio %10u\n",
atomic_read(&dma->total_prio));
DRM_SYSCTL_PRINT("bytes %10u\n",
atomic_read(&dma->total_bytes));
DRM_SYSCTL_PRINT("dmas %10u\n",
atomic_read(&dma->total_dmas));
DRM_SYSCTL_PRINT("missed:\n");
DRM_SYSCTL_PRINT(" dma %10u\n",
atomic_read(&dma->total_missed_dma));
DRM_SYSCTL_PRINT(" lock %10u\n",
atomic_read(&dma->total_missed_lock));
DRM_SYSCTL_PRINT(" free %10u\n",
atomic_read(&dma->total_missed_free));
DRM_SYSCTL_PRINT(" sched %10u\n",
atomic_read(&dma->total_missed_sched));
DRM_SYSCTL_PRINT("tried %10u\n",
atomic_read(&dma->total_tried));
DRM_SYSCTL_PRINT("hit %10u\n",
atomic_read(&dma->total_hit));
DRM_SYSCTL_PRINT("lost %10u\n",
atomic_read(&dma->total_lost));
buffer = dma->next_buffer;
if (buffer) {
DRM_SYSCTL_PRINT("next_buffer %7d\n", buffer->idx);
} else {
DRM_SYSCTL_PRINT("next_buffer none\n");
}
buffer = dma->this_buffer;
if (buffer) {
DRM_SYSCTL_PRINT("this_buffer %7d\n", buffer->idx);
} else {
DRM_SYSCTL_PRINT("this_buffer none\n");
}
}
DRM_SYSCTL_PRINT("\nvalues:\n");
if (dev->lock.hw_lock) {
DRM_SYSCTL_PRINT("lock 0x%08x\n",
dev->lock.hw_lock->lock);
} else {
DRM_SYSCTL_PRINT("lock none\n");
}
DRM_SYSCTL_PRINT("context_flag 0x%08x\n", dev->context_flag);
DRM_SYSCTL_PRINT("interrupt_flag 0x%08x\n", dev->interrupt_flag);
DRM_SYSCTL_PRINT("dma_flag 0x%08x\n", dev->dma_flag);
DRM_SYSCTL_PRINT("queue_count %10d\n", dev->queue_count);
DRM_SYSCTL_PRINT("last_context %10d\n", dev->last_context);
DRM_SYSCTL_PRINT("last_switch %10u\n", dev->last_switch);
DRM_SYSCTL_PRINT("last_checked %10d\n", dev->last_checked);
DRM_SYSCTL_PRINT("\n q2d d2c c2f"
" q2c q2f dma sch"
" ctx lacq lhld\n\n");
for (i = 0; i < DRM_DMA_HISTOGRAM_SLOTS; i++) {
DRM_SYSCTL_PRINT("%s %10lu %10u %10u %10u %10u %10u"
" %10u %10u %10u %10u %10u\n",
i == DRM_DMA_HISTOGRAM_SLOTS - 1 ? ">=" : "< ",
i == DRM_DMA_HISTOGRAM_SLOTS - 1
? prev_value : slot_value ,
atomic_read(&dev->histo
.queued_to_dispatched[i]),
atomic_read(&dev->histo
.dispatched_to_completed[i]),
atomic_read(&dev->histo
.completed_to_freed[i]),
atomic_read(&dev->histo
.queued_to_completed[i]),
atomic_read(&dev->histo
.queued_to_freed[i]),
atomic_read(&dev->histo.dma[i]),
atomic_read(&dev->histo.schedule[i]),
atomic_read(&dev->histo.ctx[i]),
atomic_read(&dev->histo.lacq[i]),
atomic_read(&dev->histo.lhld[i]));
prev_value = slot_value;
slot_value = DRM_DMA_HISTOGRAM_NEXT(slot_value);
}
SYSCTL_OUT(req, "", 1);
return 0;
}
static int drm_histo_info SYSCTL_HANDLER_ARGS
{
drm_device_t *dev = arg1;
int ret;
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
ret = _drm_histo_info(oidp, arg1, arg2, req);
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return ret;
}
#endif

201
bsd/tdfx_context.c Normal file
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/* tdfx_context.c -- IOCTLs for tdfx contexts -*- c -*-
* Created: Thu Oct 7 10:50:22 1999 by faith@precisioninsight.com
* Revised: Sat Oct 9 23:39:56 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI$
* $XFree86$
*
*/
#include "drmP.h"
#include "tdfx_drv.h"
extern drm_ctx_t tdfx_res_ctx;
static int tdfx_alloc_queue(drm_device_t *dev)
{
static int context = 0;
return ++context; /* Should this reuse contexts in the future? */
}
int tdfx_context_switch(drm_device_t *dev, int old, int new)
{
char buf[64];
atomic_inc(&dev->total_ctx);
if (test_and_set_bit(0, &dev->context_flag)) {
DRM_ERROR("Reentering -- FIXME\n");
return -EBUSY;
}
#if DRM_DMA_HISTOGRAM
getnanotime(&dev->ctx_start);
#endif
DRM_DEBUG("Context switch from %d to %d\n", old, new);
if (new == dev->last_context) {
clear_bit(0, &dev->context_flag);
return 0;
}
if (drm_flags & DRM_FLAG_NOCTX) {
tdfx_context_switch_complete(dev, new);
} else {
sprintf(buf, "C %d %d\n", old, new);
drm_write_string(dev, buf);
}
return 0;
}
int tdfx_context_switch_complete(drm_device_t *dev, int new)
{
dev->last_context = new; /* PRE/POST: This is the _only_ writer. */
dev->last_switch = ticks;
if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
DRM_ERROR("Lock isn't held after context switch\n");
}
/* If a context switch is ever initiated
when the kernel holds the lock, release
that lock here. */
#if DRM_DMA_HISTOGRAM
{
struct timespec ts;
getnanotime(&ts);
timespecsub(&ts, &dev->lck_start);
atomic_inc(&dev->histo.ctx[drm_histogram_slot(&ts)]);
}
#endif
clear_bit(0, &dev->context_flag);
wakeup(&dev->context_wait);
return 0;
}
int
tdfx_resctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_ctx_res_t res;
drm_ctx_t ctx;
int i, error;
DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
res = *(drm_ctx_res_t *) data;
if (res.count >= DRM_RESERVED_CONTEXTS) {
memset(&ctx, 0, sizeof(ctx));
for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
ctx.handle = i;
error = copyout(&i, &res.contexts[i], sizeof(i));
if (error) return error;
}
}
res.count = DRM_RESERVED_CONTEXTS;
*(drm_ctx_res_t *) data = res;
return 0;
}
int
tdfx_addctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
if ((ctx.handle = tdfx_alloc_queue(dev)) == DRM_KERNEL_CONTEXT) {
/* Skip kernel's context and get a new one. */
ctx.handle = tdfx_alloc_queue(dev);
}
DRM_DEBUG("%d\n", ctx.handle);
*(drm_ctx_t *) data = ctx;
return 0;
}
int
tdfx_modctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
if (ctx.flags==_DRM_CONTEXT_PRESERVED)
tdfx_res_ctx.handle=ctx.handle;
return 0;
}
int
tdfx_getctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
/* This is 0, because we don't hanlde any context flags */
ctx.flags = 0;
*(drm_ctx_t *) data = ctx;
return 0;
}
int
tdfx_switchctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
DRM_DEBUG("%d\n", ctx.handle);
return tdfx_context_switch(dev, dev->last_context, ctx.handle);
}
int
tdfx_newctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
DRM_DEBUG("%d\n", ctx.handle);
tdfx_context_switch_complete(dev, ctx.handle);
return 0;
}
int
tdfx_rmctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_ctx_t ctx;
ctx = *(drm_ctx_t *) data;
DRM_DEBUG("%d\n", ctx.handle);
/* This is currently a noop because we
don't reuse context values. Perhaps we
should? */
return 0;
}

624
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@ -0,0 +1,624 @@
/* tdfx.c -- tdfx driver -*- c -*-
* Created: Thu Oct 7 10:38:32 1999 by faith@precisioninsight.com
* Revised: Tue Oct 12 08:51:35 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI$
* $XFree86$
*
*/
#include "drmP.h"
#include "tdfx_drv.h"
#define TDFX_NAME "tdfx"
#define TDFX_DESC "tdfx"
#define TDFX_DATE "19991009"
#define TDFX_MAJOR 0
#define TDFX_MINOR 0
#define TDFX_PATCHLEVEL 1
static drm_device_t tdfx_device;
drm_ctx_t tdfx_res_ctx;
#define CDEV_MAJOR 201
/* tdfx_drv.c */
static d_open_t tdfx_open;
static d_close_t tdfx_close;
static d_ioctl_t tdfx_version;
static d_ioctl_t tdfx_ioctl;
static d_ioctl_t tdfx_lock;
static d_ioctl_t tdfx_unlock;
static struct cdevsw tdfx_cdevsw = {
/* open */ tdfx_open,
/* close */ tdfx_close,
/* read */ drm_read,
/* write */ drm_write,
/* ioctl */ tdfx_ioctl,
/* poll */ drm_poll,
/* mmap */ drm_mmap,
/* strategy */ nostrategy,
/* name */ "tdfx",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_TTY | D_TRACKCLOSE,
/* bmaj */ -1
};
static drm_ioctl_desc_t tdfx_ioctls[] = {
[DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { tdfx_version, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { drm_getunique, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { drm_getmagic, 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_busid, 0, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_block, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_unblock, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { drm_authmagic, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { drm_addmap, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { tdfx_addctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { tdfx_rmctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { tdfx_modctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { tdfx_getctx, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { tdfx_switchctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { tdfx_newctx, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { tdfx_resctx, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { drm_adddraw, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { drm_rmdraw, 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { tdfx_lock, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { tdfx_unlock, 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_finish, 1, 0 },
};
#define TDFX_IOCTL_COUNT DRM_ARRAY_SIZE(tdfx_ioctls)
static int
tdfx_setup(drm_device_t *dev)
{
int i;
atomic_set(&dev->ioctl_count, 0);
atomic_set(&dev->vma_count, 0);
dev->buf_use = 0;
atomic_set(&dev->buf_alloc, 0);
atomic_set(&dev->total_open, 0);
atomic_set(&dev->total_close, 0);
atomic_set(&dev->total_ioctl, 0);
atomic_set(&dev->total_irq, 0);
atomic_set(&dev->total_ctx, 0);
atomic_set(&dev->total_locks, 0);
atomic_set(&dev->total_unlocks, 0);
atomic_set(&dev->total_contends, 0);
atomic_set(&dev->total_sleeps, 0);
for (i = 0; i < DRM_HASH_SIZE; i++) {
dev->magiclist[i].head = NULL;
dev->magiclist[i].tail = NULL;
}
dev->maplist = NULL;
dev->map_count = 0;
dev->vmalist = NULL;
dev->lock.hw_lock = NULL;
dev->lock.lock_queue = 0;
dev->queue_count = 0;
dev->queue_reserved = 0;
dev->queue_slots = 0;
dev->queuelist = NULL;
dev->irq = 0;
dev->context_flag = 0;
dev->interrupt_flag = 0;
dev->dma = 0;
dev->dma_flag = 0;
dev->last_context = 0;
dev->last_switch = 0;
dev->last_checked = 0;
callout_init(&dev->timer);
dev->context_wait = 0;
timespecclear(&dev->ctx_start);
timespecclear(&dev->lck_start);
dev->buf_rp = dev->buf;
dev->buf_wp = dev->buf;
dev->buf_end = dev->buf + DRM_BSZ;
bzero(&dev->buf_sel, sizeof dev->buf_sel);
dev->buf_sigio = NULL;
dev->buf_readers = 0;
dev->buf_writers = 0;
dev->buf_selecting = 0;
tdfx_res_ctx.handle=-1;
DRM_DEBUG("\n");
/* The kernel's context could be created here, but is now created
in drm_dma_enqueue. This is more resource-efficient for
hardware that does not do DMA, but may mean that
drm_select_queue fails between the time the interrupt is
initialized and the time the queues are initialized. */
return 0;
}
static int
tdfx_takedown(drm_device_t *dev)
{
int i;
drm_magic_entry_t *pt, *next;
drm_map_t *map;
drm_vma_entry_t *vma, *vma_next;
DRM_DEBUG("\n");
lockmgr(&dev->dev_lock, LK_EXCLUSIVE, 0, curproc);
callout_stop(&dev->timer);
if (dev->devname) {
drm_free(dev->devname, strlen(dev->devname)+1, DRM_MEM_DRIVER);
dev->devname = NULL;
}
if (dev->unique) {
drm_free(dev->unique, strlen(dev->unique)+1, DRM_MEM_DRIVER);
dev->unique = NULL;
dev->unique_len = 0;
}
/* Clear pid list */
for (i = 0; i < DRM_HASH_SIZE; i++) {
for (pt = dev->magiclist[i].head; pt; pt = next) {
next = pt->next;
drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
}
dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
}
/* Clear vma list (only built for debugging) */
if (dev->vmalist) {
for (vma = dev->vmalist; vma; vma = vma_next) {
vma_next = vma->next;
drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
}
dev->vmalist = NULL;
}
/* Clear map area and mtrr information */
if (dev->maplist) {
for (i = 0; i < dev->map_count; i++) {
map = dev->maplist[i];
switch (map->type) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
#ifdef CONFIG_MTRR
if (map->mtrr >= 0) {
int retcode;
retcode = mtrr_del(map->mtrr,
map->offset,
map->size);
DRM_DEBUG("mtrr_del = %d\n", retcode);
}
#endif
drm_ioremapfree(map->handle, map->size);
break;
case _DRM_SHM:
drm_free_pages((unsigned long)map->handle,
drm_order(map->size)
- PAGE_SHIFT,
DRM_MEM_SAREA);
break;
}
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
}
drm_free(dev->maplist,
dev->map_count * sizeof(*dev->maplist),
DRM_MEM_MAPS);
dev->maplist = NULL;
dev->map_count = 0;
}
if (dev->lock.hw_lock) {
dev->lock.hw_lock = NULL; /* SHM removed */
dev->lock.pid = 0;
#if 0
wake_up_interruptible(&dev->lock.lock_queue);
#endif
}
lockmgr(&dev->dev_lock, LK_RELEASE, 0, curproc);
return 0;
}
/* tdfx_init is called via SYSINIT at module load time, */
static int
tdfx_init(void *arg)
{
drm_device_t *dev = &tdfx_device;
DRM_DEBUG("\n");
memset((void *)dev, 0, sizeof(*dev));
simple_lock_init(&dev->count_lock);
lockinit(&dev->dev_lock, PZERO, "drmlk", 0, 0);
#if 0
drm_parse_options(tdfx);
#endif
dev->device = make_dev(&tdfx_cdevsw,
/* gamma_misc.minor */ 0,
DRM_DEV_UID,
DRM_DEV_GID,
DRM_DEV_MODE,
TDFX_NAME);
dev->name = TDFX_NAME;
drm_mem_init();
drm_sysctl_init(dev);
TAILQ_INIT(&dev->files);
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
TDFX_NAME,
TDFX_MAJOR,
TDFX_MINOR,
TDFX_PATCHLEVEL,
TDFX_DATE,
0 /* tdfx_misc.minor */);
return 0;
}
SYSINIT(tdfx_init, SI_SUB_DRIVERS, SI_ORDER_ANY, tdfx_init, 0);
/* tdfx_cleanup is called via SYSUNINIT at module unload time. */
static void
tdfx_cleanup(void *arg)
{
drm_device_t *dev = &tdfx_device;
DRM_DEBUG("\n");
drm_sysctl_cleanup(dev);
destroy_dev(dev->device);
DRM_INFO("Module unloaded\n");
tdfx_takedown(dev);
}
SYSUNINIT(tdfx_init, SI_SUB_DRIVERS, SI_ORDER_ANY, tdfx_cleanup, 0);
static int
tdfx_version(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_version_t version;
int len;
version = *(drm_version_t *) data;
#define DRM_COPY(name,value) \
len = strlen(value); \
if (len > name##_len) len = name##_len; \
name##_len = strlen(value); \
if (len && name) { \
int error = copyout(value, name, len); \
if (error) return error; \
}
version.version_major = TDFX_MAJOR;
version.version_minor = TDFX_MINOR;
version.version_patchlevel = TDFX_PATCHLEVEL;
DRM_COPY(version.name, TDFX_NAME);
DRM_COPY(version.date, TDFX_DATE);
DRM_COPY(version.desc, TDFX_DESC);
*(drm_version_t *) data = version;
return 0;
}
static int
tdfx_open(dev_t kdev, int flags, int fmt, struct proc *p)
{
drm_device_t *dev = &tdfx_device;
int retcode = 0;
DRM_DEBUG("open_count = %d\n", dev->open_count);
if (!(retcode = drm_open_helper(kdev, flags, fmt, p, dev))) {
atomic_inc(&dev->total_open);
simple_lock(&dev->count_lock);
if (!dev->open_count++) {
simple_unlock(&dev->count_lock);
return tdfx_setup(dev);
}
simple_unlock(&dev->count_lock);
}
return retcode;
}
static int
tdfx_close(dev_t kdev, int flags, int fmt, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
int retcode = 0;
DRM_DEBUG("open_count = %d\n", dev->open_count);
if (!(retcode = drm_close(kdev, flags, fmt, p))) {
atomic_inc(&dev->total_close);
simple_lock(&dev->count_lock);
if (!--dev->open_count) {
if (atomic_read(&dev->ioctl_count) || dev->blocked) {
DRM_ERROR("Device busy: %d %d\n",
atomic_read(&dev->ioctl_count),
dev->blocked);
simple_unlock(&dev->count_lock);
return EBUSY;
}
simple_unlock(&dev->count_lock);
return tdfx_takedown(dev);
}
simple_unlock(&dev->count_lock);
}
return retcode;
}
/* tdfx_ioctl is called whenever a process performs an ioctl on /dev/drm. */
static int
tdfx_ioctl(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
int nr = DRM_IOCTL_NR(cmd);
drm_device_t *dev = kdev->si_drv1;
drm_file_t *priv;
int retcode = 0;
drm_ioctl_desc_t *ioctl;
d_ioctl_t *func;
DRM_DEBUG("dev=%p\n", dev);
priv = drm_find_file_by_proc(dev, p);
if (!priv) {
DRM_DEBUG("can't find authenticator\n");
return EINVAL;
}
atomic_inc(&dev->ioctl_count);
atomic_inc(&dev->total_ioctl);
++priv->ioctl_count;
DRM_DEBUG("pid = %d, cmd = 0x%02lx, nr = 0x%02x, auth = %d\n",
p->p_pid, cmd, nr, priv->authenticated);
switch (cmd) {
case FIONBIO:
atomic_dec(&dev->ioctl_count);
return 0;
case FIOASYNC:
atomic_dec(&dev->ioctl_count);
dev->flags |= FASYNC;
return 0;
case FIOSETOWN:
atomic_dec(&dev->ioctl_count);
return fsetown(*(int *)data, &dev->buf_sigio);
case FIOGETOWN:
atomic_dec(&dev->ioctl_count);
*(int *) data = fgetown(dev->buf_sigio);
return 0;
}
if (nr >= TDFX_IOCTL_COUNT) {
retcode = EINVAL;
} else {
ioctl = &tdfx_ioctls[nr];
func = ioctl->func;
if (!func) {
DRM_DEBUG("no function\n");
retcode = EINVAL;
} else if ((ioctl->root_only && suser(p))
|| (ioctl->auth_needed && !priv->authenticated)) {
retcode = EACCES;
} else {
retcode = (func)(kdev, cmd, data, flags, p);
}
}
atomic_dec(&dev->ioctl_count);
return retcode;
}
static int
tdfx_lock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
int ret = 0;
drm_lock_t lock;
#if DRM_DMA_HISTOGRAM
getnanotime(&dev->lck_start);
#endif
lock = *(drm_lock_t *) data;
if (lock.context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
p->p_pid, lock.context);
return EINVAL;
}
DRM_DEBUG("%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
lock.context, p->p_pid, dev->lock.hw_lock->lock,
lock.flags);
#if 0
/* dev->queue_count == 0 right now for
tdfx. FIXME? */
if (lock.context < 0 || lock.context >= dev->queue_count)
return EINVAL;
#endif
if (!ret) {
#if 0
if (_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)
!= lock.context) {
long j = ticks - dev->lock.lock_time;
if (lock.context == tdfx_res_ctx.handle &&
j >= 0 && j < DRM_LOCK_SLICE) {
/* Can't take lock if we just had it and
there is contention. */
DRM_DEBUG("%d (pid %d) delayed j=%d dev=%d ticks=%d\n",
lock.context, p->p_pid, j,
dev->lock.lock_time, ticks);
ret = tsleep(&never, PZERO|PCATCH, "drmlk1",
DRM_LOCK_SLICE - j);
if (ret)
return ret;
DRM_DEBUG("ticks=%d\n", ticks);
}
}
#endif
for (;;) {
if (!dev->lock.hw_lock) {
/* Device has been unregistered */
ret = EINTR;
break;
}
if (drm_lock_take(&dev->lock.hw_lock->lock,
lock.context)) {
dev->lock.pid = p->p_pid;
dev->lock.lock_time = ticks;
atomic_inc(&dev->total_locks);
break; /* Got lock */
}
/* Contention */
atomic_inc(&dev->total_sleeps);
ret = tsleep(&dev->lock.lock_queue,
PZERO|PCATCH,
"drmlk2",
0);
}
}
#if 0
if (!ret && dev->last_context != lock.context &&
lock.context != tdfx_res_ctx.handle &&
dev->last_context != tdfx_res_ctx.handle) {
add_wait_queue(&dev->context_wait, &entry);
current->state = TASK_INTERRUPTIBLE;
/* PRE: dev->last_context != lock.context */
tdfx_context_switch(dev, dev->last_context, lock.context);
/* POST: we will wait for the context
switch and will dispatch on a later call
when dev->last_context == lock.context
NOTE WE HOLD THE LOCK THROUGHOUT THIS
TIME! */
current->policy |= SCHED_YIELD;
schedule();
current->state = TASK_RUNNING;
remove_wait_queue(&dev->context_wait, &entry);
if (signal_pending(current)) {
ret = EINTR;
} else if (dev->last_context != lock.context) {
DRM_ERROR("Context mismatch: %d %d\n",
dev->last_context, lock.context);
}
}
#endif
if (!ret) {
if (lock.flags & _DRM_LOCK_READY) {
/* Wait for space in DMA/FIFO */
}
if (lock.flags & _DRM_LOCK_QUIESCENT) {
/* Make hardware quiescent */
#if 0
tdfx_quiescent(dev);
#endif
}
}
#if 0
DRM_ERROR("pid = %5d, old counter = %5ld\n",
p->p_pid, current->counter);
#endif
#if 0
while (current->counter > 25)
current->counter >>= 1; /* decrease time slice */
DRM_ERROR("pid = %5d, new counter = %5ld\n",
p->p_pid, current->counter);
#endif
DRM_DEBUG("%d %s\n", lock.context, ret ? "interrupted" : "has lock");
#if DRM_DMA_HISTOGRAM
{
struct timespec ts;
getnanotime(&ts);
timespecsub(&ts, &dev->lck_start);
atomic_inc(&dev->histo.lhld[drm_histogram_slot(&ts)]);
}
#endif
return ret;
}
static int
tdfx_unlock(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p)
{
drm_device_t *dev = kdev->si_drv1;
drm_lock_t lock;
lock = *(drm_lock_t *) data;
if (lock.context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
p->p_pid, lock.context);
return EINVAL;
}
DRM_DEBUG("%d frees lock (%d holds)\n",
lock.context,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
atomic_inc(&dev->total_unlocks);
if (_DRM_LOCK_IS_CONT(dev->lock.hw_lock->lock))
atomic_inc(&dev->total_contends);
drm_lock_transfer(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT);
/* FIXME: Try to send data to card here */
if (!dev->context_flag) {
if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT)) {
DRM_ERROR("\n");
}
}
return 0;
}

47
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/* tdfx_drv.h -- Private header for tdfx driver -*- c -*-
* Created: Thu Oct 7 10:40:04 1999 by faith@precisioninsight.com
* Revised: Sat Oct 9 23:38:19 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI$
* $XFree86$
*
*/
#ifndef _TDFX_DRV_H_
#define _TDFX_DRV_H_
/* tdfx_context.c */
extern d_ioctl_t tdfx_resctx;
extern d_ioctl_t tdfx_addctx;
extern d_ioctl_t tdfx_modctx;
extern d_ioctl_t tdfx_getctx;
extern d_ioctl_t tdfx_switchctx;
extern d_ioctl_t tdfx_newctx;
extern d_ioctl_t tdfx_rmctx;
extern int tdfx_context_switch(drm_device_t *dev, int old, int new);
extern int tdfx_context_switch_complete(drm_device_t *dev, int new);
#endif

103
bsd/vm.c Normal file
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/* vm.c -- Memory mapping for DRM -*- c -*-
* Created: Mon Jan 4 08:58:31 1999 by faith@precisioninsight.com
* Revised: Fri Aug 20 22:48:11 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* $PI: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/vm.c,v 1.7 1999/08/21 02:48:34 faith Exp $
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/kernel/vm.c,v 1.1 1999/09/25 14:38:02 dawes Exp $
*
*/
#define __NO_VERSION__
#include "drmP.h"
#include <vm/vm.h>
#include <vm/pmap.h>
static int drm_dma_mmap(dev_t kdev, vm_offset_t offset, int prot)
{
drm_device_t *dev = kdev->si_drv1;
drm_device_dma_t *dma = dev->dma;
unsigned long physical;
unsigned long page;
if (!dma) return -1; /* Error */
if (!dma->pagelist) return -1; /* Nothing allocated */
page = offset >> PAGE_SHIFT;
physical = dma->pagelist[page];
DRM_DEBUG("0x%08x (page %lu) => 0x%08lx\n", offset, page, physical);
return atop(physical);
}
int drm_mmap(dev_t kdev, vm_offset_t offset, int prot)
{
drm_device_t *dev = kdev->si_drv1;
drm_map_t *map = NULL;
int i;
/* DRM_DEBUG("offset = 0x%x\n", offset); */
if (dev->dma
&& offset >= 0
&& offset < ptoa(dev->dma->page_count))
return drm_dma_mmap(kdev, offset, prot);
/* A sequential search of a linked list is
fine here because: 1) there will only be
about 5-10 entries in the list and, 2) a
DRI client only has to do this mapping
once, so it doesn't have to be optimized
for performance, even if the list was a
bit longer. */
for (i = 0; i < dev->map_count; i++) {
map = dev->maplist[i];
/* DRM_DEBUG("considering 0x%x..0x%x\n", map->offset, map->offset + map->size - 1); */
if (offset >= map->offset
&& offset < map->offset + map->size) break;
}
if (i >= dev->map_count) {
DRM_DEBUG("can't find map\n");
return -1;
}
if (!map || ((map->flags&_DRM_RESTRICTED) && suser(curproc))) {
DRM_DEBUG("restricted map\n");
return -1;
}
switch (map->type) {
case _DRM_FRAME_BUFFER:
case _DRM_REGISTERS:
return atop(offset);
case _DRM_SHM:
return atop(vtophys(offset));
default:
return -1; /* This should never happen. */
}
DRM_DEBUG("bailing out\n");
return -1;
}