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mesa-drm/libdrm/xf86drm.c
Eric Anholt d2f2b42f1d Try to open the /dev/dri/cardX device once, then only if it fails check the 
device number and recreate it if necessary. Fixes xf86drm.c to allow
    linux binaries to be used for emulation on FreeBSD.
2002-08-08 21:23:46 +00:00

1495 lines
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/* xf86drm.c -- User-level interface to DRM device
* Created: Tue Jan 5 08:16:21 1999 by faith@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* 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.
*
* Authors: Rickard E. (Rik) Faith <faith@valinux.com>
* Kevin E. Martin <martin@valinux.com>
*
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/linux/drm/xf86drm.c,v 1.25 2001/08/27 17:40:59 dawes Exp $
*
*/
#ifdef XFree86Server
# include "xf86.h"
# include "xf86_OSproc.h"
# include "xf86_ansic.h"
# define _DRM_MALLOC xalloc
# define _DRM_FREE xfree
# ifndef XFree86LOADER
# include <sys/mman.h>
# endif
#else
# include <stdio.h>
# include <stdlib.h>
# include <unistd.h>
# include <string.h>
# include <ctype.h>
# include <fcntl.h>
# include <errno.h>
# include <signal.h>
# include <sys/types.h>
# include <sys/stat.h>
# define stat_t struct stat
# include <sys/ioctl.h>
# include <sys/mman.h>
# include <sys/time.h>
# include <stdarg.h>
# ifdef DRM_USE_MALLOC
# define _DRM_MALLOC malloc
# define _DRM_FREE free
extern int xf86InstallSIGIOHandler(int fd, void (*f)(int, void *), void *);
extern int xf86RemoveSIGIOHandler(int fd);
# else
# include <X11/Xlibint.h>
# define _DRM_MALLOC Xmalloc
# define _DRM_FREE Xfree
# endif
#endif
/* No longer needed with CVS kernel modules on alpha
#if defined(__alpha__) && defined(__linux__)
extern unsigned long _bus_base(void);
#define BUS_BASE _bus_base()
#endif
*/
/* Not all systems have MAP_FAILED defined */
#ifndef MAP_FAILED
#define MAP_FAILED ((void *)-1)
#endif
#include "xf86drm.h"
#include "drm.h"
#ifndef DRM_MAJOR
#define DRM_MAJOR 226 /* Linux */
#endif
#ifndef __linux__
#undef DRM_MAJOR
#define DRM_MAJOR 145 /* Should set in drm.h for *BSD */
#endif
#ifndef DRM_MAX_MINOR
#define DRM_MAX_MINOR 16
#endif
#ifdef __linux__
#include <sys/sysmacros.h> /* for makedev() */
#endif
#ifndef makedev
/* This definition needs to be changed on
some systems if dev_t is a structure.
If there is a header file we can get it
from, there would be best. */
#define makedev(x,y) ((dev_t)(((x) << 8) | (y)))
#endif
#define DRM_MSG_VERBOSITY 3
static void
drmMsg(const char *format, ...)
{
va_list ap;
#ifndef XFree86Server
const char *env;
if ((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose"))
#endif
{
va_start(ap, format);
#ifdef XFree86Server
xf86VDrvMsgVerb(-1, X_NONE, DRM_MSG_VERBOSITY, format, ap);
#else
vfprintf(stderr, format, ap);
#endif
va_end(ap);
}
}
static void *drmHashTable = NULL; /* Context switch callbacks */
typedef struct drmHashEntry {
int fd;
void (*f)(int, void *, void *);
void *tagTable;
} drmHashEntry;
void *drmMalloc(int size)
{
void *pt;
if ((pt = _DRM_MALLOC(size))) memset(pt, 0, size);
return pt;
}
void drmFree(void *pt)
{
if (pt) _DRM_FREE(pt);
}
/* drmStrdup can't use strdup(3), since it doesn't call _DRM_MALLOC... */
static char *drmStrdup(const char *s)
{
char *retval = NULL;
if (s) {
retval = _DRM_MALLOC(strlen(s)+1);
strcpy(retval, s);
}
return retval;
}
static unsigned long drmGetKeyFromFd(int fd)
{
stat_t st;
st.st_rdev = 0;
fstat(fd, &st);
return st.st_rdev;
}
static drmHashEntry *drmGetEntry(int fd)
{
unsigned long key = drmGetKeyFromFd(fd);
void *value;
drmHashEntry *entry;
if (!drmHashTable) drmHashTable = drmHashCreate();
if (drmHashLookup(drmHashTable, key, &value)) {
entry = drmMalloc(sizeof(*entry));
entry->fd = fd;
entry->f = NULL;
entry->tagTable = drmHashCreate();
drmHashInsert(drmHashTable, key, entry);
} else {
entry = value;
}
return entry;
}
static int drmOpenDevice(long dev, int minor)
{
stat_t st;
char buf[64];
int fd;
mode_t dirmode = DRM_DEV_DIRMODE;
mode_t devmode = DRM_DEV_MODE;
int isroot = !geteuid();
#if defined(XFree86Server)
uid_t user = DRM_DEV_UID;
gid_t group = DRM_DEV_GID;
#endif
drmMsg("drmOpenDevice: minor is %d\n", minor);
#if defined(XFree86Server)
devmode = xf86ConfigDRI.mode ? xf86ConfigDRI.mode : DRM_DEV_MODE;
dirmode = (devmode & S_IRUSR) ? S_IXUSR : 0;
dirmode |= (devmode & S_IRGRP) ? S_IXGRP : 0;
dirmode |= (devmode & S_IROTH) ? S_IXOTH : 0;
dirmode |= devmode;
devmode &= ~(S_IXUSR|S_IXGRP|S_IXOTH);
group = (xf86ConfigDRI.group >= 0) ? xf86ConfigDRI.group : DRM_DEV_GID;
#endif
if (stat(DRM_DIR_NAME, &st)) {
if (!isroot) return DRM_ERR_NOT_ROOT;
remove(DRM_DIR_NAME);
mkdir(DRM_DIR_NAME, dirmode);
}
#if defined(XFree86Server)
chown(DRM_DIR_NAME, user, group);
chmod(DRM_DIR_NAME, dirmode);
#endif
sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, minor);
drmMsg("drmOpenDevice: node name is %s\n", buf);
if (stat(buf, &st)) {
if (!isroot) return DRM_ERR_NOT_ROOT;
remove(buf);
mknod(buf, S_IFCHR | devmode, dev);
}
#if defined(XFree86Server)
chown(buf, user, group);
chmod(buf, devmode);
#endif
fd = open(buf, O_RDWR, 0);
drmMsg("drmOpenDevice: open result is %d, (%s)\n",
fd, fd < 0 ? strerror(errno) : "OK");
if (fd >= 0) return fd;
if (st.st_rdev != dev) {
if (!isroot) return DRM_ERR_NOT_ROOT;
remove(buf);
mknod(buf, S_IFCHR | devmode, dev);
}
fd = open(buf, O_RDWR, 0);
drmMsg("drmOpenDevice: open result is %d, (%s)\n",
fd, fd < 0 ? strerror(errno) : "OK");
drmMsg("drmOpenDevice: Open failed\n");
remove(buf);
return -errno;
}
static int drmOpenMinor(int minor, int create)
{
int fd;
char buf[64];
if (create) return drmOpenDevice(makedev(DRM_MAJOR, minor), minor);
sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, minor);
if ((fd = open(buf, O_RDWR, 0)) >= 0) return fd;
return -errno;
}
/* drmAvailable looks for (DRM_MAJOR, 0) and returns 1 if it returns
information for DRM_IOCTL_VERSION. For backward compatibility with
older Linux implementations, /proc/dri is also checked. */
int drmAvailable(void)
{
drmVersionPtr version;
int retval = 0;
int fd;
if ((fd = drmOpenMinor(0, 1)) < 0) {
/* Try proc for backward Linux compatibility */
if (!access("/proc/dri/0", R_OK)) return 1;
return 0;
}
if ((version = drmGetVersion(fd))) {
retval = 1;
drmFreeVersion(version);
}
close(fd);
return retval;
}
static int drmOpenByBusid(const char *busid)
{
int i;
int fd;
const char *buf;
drmMsg("drmOpenByBusid: busid is %s\n", busid);
for (i = 0; i < DRM_MAX_MINOR; i++) {
fd = drmOpenMinor(i, 1);
drmMsg("drmOpenByBusid: drmOpenMinor returns %d\n", fd);
if (fd >= 0) {
buf = drmGetBusid(fd);
drmMsg("drmOpenByBusid: drmGetBusid reports %s\n", buf);
if (buf && !strcmp(buf, busid)) {
drmFreeBusid(buf);
return fd;
}
if (buf) drmFreeBusid(buf);
close(fd);
}
}
return -1;
}
static int drmOpenByName(const char *name)
{
int i;
int fd;
drmVersionPtr version;
char * id;
if (!drmAvailable()) {
#if !defined(XFree86Server)
return -1;
#else
/* try to load the kernel module now */
if (!xf86LoadKernelModule(name)) {
ErrorF("[drm] failed to load kernel module \"%s\"\n",
name);
return -1;
}
#endif
}
/*
* Open the first minor number that matches the driver name and isn't
* already in use. If it's in use it will have a busid assigned already.
*/
for (i = 0; i < DRM_MAX_MINOR; i++) {
if ((fd = drmOpenMinor(i, 1)) >= 0) {
if ((version = drmGetVersion(fd))) {
if (!strcmp(version->name, name)) {
drmFreeVersion(version);
id = drmGetBusid(fd);
drmMsg("drmGetBusid returned '%s'\n", id ? id : "NULL");
if (!id || !*id) {
if (id) {
drmFreeBusid(id);
}
return fd;
} else {
drmFreeBusid(id);
}
} else {
drmFreeVersion(version);
}
}
close(fd);
}
}
#ifdef __linux__
/* Backward-compatibility /proc support */
for (i = 0; i < 8; i++) {
char proc_name[64], buf[512];
char *driver, *pt, *devstring;
int retcode;
sprintf(proc_name, "/proc/dri/%d/name", i);
if ((fd = open(proc_name, 0, 0)) >= 0) {
retcode = read(fd, buf, sizeof(buf)-1);
close(fd);
if (retcode) {
buf[retcode-1] = '\0';
for (driver = pt = buf; *pt && *pt != ' '; ++pt)
;
if (*pt) { /* Device is next */
*pt = '\0';
if (!strcmp(driver, name)) { /* Match */
for (devstring = ++pt; *pt && *pt != ' '; ++pt)
;
if (*pt) { /* Found busid */
return drmOpenByBusid(++pt);
} else { /* No busid */
return drmOpenDevice(strtol(devstring, NULL, 0),i);
}
}
}
}
}
}
#endif
return -1;
}
/* drmOpen looks up the specified name and busid, and opens the device
found. The entry in /dev/dri is created if necessary (and if root).
A file descriptor is returned. On error, the return value is
negative. */
int drmOpen(const char *name, const char *busid)
{
if (busid) return drmOpenByBusid(busid);
return drmOpenByName(name);
}
void drmFreeVersion(drmVersionPtr v)
{
if (!v) return;
if (v->name) drmFree(v->name);
if (v->date) drmFree(v->date);
if (v->desc) drmFree(v->desc);
drmFree(v);
}
static void drmFreeKernelVersion(drm_version_t *v)
{
if (!v) return;
if (v->name) drmFree(v->name);
if (v->date) drmFree(v->date);
if (v->desc) drmFree(v->desc);
drmFree(v);
}
static void drmCopyVersion(drmVersionPtr d, const drm_version_t *s)
{
d->version_major = s->version_major;
d->version_minor = s->version_minor;
d->version_patchlevel = s->version_patchlevel;
d->name_len = s->name_len;
d->name = drmStrdup(s->name);
d->date_len = s->date_len;
d->date = drmStrdup(s->date);
d->desc_len = s->desc_len;
d->desc = drmStrdup(s->desc);
}
/* drmGet Version obtains the driver version information via an ioctl. Similar
* information is available via /proc/dri. */
drmVersionPtr drmGetVersion(int fd)
{
drmVersionPtr retval;
drm_version_t *version = drmMalloc(sizeof(*version));
/* First, get the lengths */
version->name_len = 0;
version->name = NULL;
version->date_len = 0;
version->date = NULL;
version->desc_len = 0;
version->desc = NULL;
if (ioctl(fd, DRM_IOCTL_VERSION, version)) {
drmFreeKernelVersion(version);
return NULL;
}
/* Now, allocate space and get the data */
if (version->name_len)
version->name = drmMalloc(version->name_len + 1);
if (version->date_len)
version->date = drmMalloc(version->date_len + 1);
if (version->desc_len)
version->desc = drmMalloc(version->desc_len + 1);
if (ioctl(fd, DRM_IOCTL_VERSION, version)) {
drmFreeKernelVersion(version);
return NULL;
}
/* The results might not be null-terminated
strings, so terminate them. */
if (version->name_len) version->name[version->name_len] = '\0';
if (version->date_len) version->date[version->date_len] = '\0';
if (version->desc_len) version->desc[version->desc_len] = '\0';
/* Now, copy it all back into the
client-visible data structure... */
retval = drmMalloc(sizeof(*retval));
drmCopyVersion(retval, version);
drmFreeKernelVersion(version);
return retval;
}
/* drmGetLibVersion set version information for the drm user space library.
* this version number is driver indepedent */
drmVersionPtr drmGetLibVersion(int fd)
{
drm_version_t *version = drmMalloc(sizeof(*version));
/* Version history:
* revision 1.0.x = original DRM interface with no drmGetLibVersion
* entry point and many drm<Device> extensions
* revision 1.1.x = added drmCommand entry points for device extensions
* added drmGetLibVersion to identify libdrm.a version
*/
version->version_major = 1;
version->version_minor = 1;
version->version_patchlevel = 0;
return (drmVersionPtr)version;
}
void drmFreeBusid(const char *busid)
{
drmFree((void *)busid);
}
char *drmGetBusid(int fd)
{
drm_unique_t u;
u.unique_len = 0;
u.unique = NULL;
if (ioctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) return NULL;
u.unique = drmMalloc(u.unique_len + 1);
if (ioctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) return NULL;
u.unique[u.unique_len] = '\0';
return u.unique;
}
int drmSetBusid(int fd, const char *busid)
{
drm_unique_t u;
u.unique = (char *)busid;
u.unique_len = strlen(busid);
if (ioctl(fd, DRM_IOCTL_SET_UNIQUE, &u)) {
return -errno;
}
return 0;
}
int drmGetMagic(int fd, drmMagicPtr magic)
{
drm_auth_t auth;
*magic = 0;
if (ioctl(fd, DRM_IOCTL_GET_MAGIC, &auth)) return -errno;
*magic = auth.magic;
return 0;
}
int drmAuthMagic(int fd, drmMagic magic)
{
drm_auth_t auth;
auth.magic = magic;
if (ioctl(fd, DRM_IOCTL_AUTH_MAGIC, &auth)) return -errno;
return 0;
}
int drmAddMap(int fd,
drmHandle offset,
drmSize size,
drmMapType type,
drmMapFlags flags,
drmHandlePtr handle)
{
drm_map_t map;
map.offset = offset;
/* No longer needed with CVS kernel modules on alpha
#ifdef __alpha__
if (type != DRM_SHM)
map.offset += BUS_BASE;
#endif
*/
map.size = size;
map.handle = 0;
map.type = type;
map.flags = flags;
if (ioctl(fd, DRM_IOCTL_ADD_MAP, &map)) return -errno;
if (handle) *handle = (drmHandle)map.handle;
return 0;
}
int drmRmMap(int fd, drmHandle handle)
{
drm_map_t map;
map.handle = (void *)handle;
if(ioctl(fd, DRM_IOCTL_RM_MAP, &map)) return -errno;
return 0;
}
int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags,
int agp_offset)
{
drm_buf_desc_t request;
request.count = count;
request.size = size;
request.low_mark = 0;
request.high_mark = 0;
request.flags = flags;
request.agp_start = agp_offset;
if (ioctl(fd, DRM_IOCTL_ADD_BUFS, &request)) return -errno;
return request.count;
}
int drmMarkBufs(int fd, double low, double high)
{
drm_buf_info_t info;
int i;
info.count = 0;
info.list = NULL;
if (ioctl(fd, DRM_IOCTL_INFO_BUFS, &info)) return -EINVAL;
if (!info.count) return -EINVAL;
if (!(info.list = drmMalloc(info.count * sizeof(*info.list))))
return -ENOMEM;
if (ioctl(fd, DRM_IOCTL_INFO_BUFS, &info)) {
int retval = -errno;
drmFree(info.list);
return retval;
}
for (i = 0; i < info.count; i++) {
info.list[i].low_mark = low * info.list[i].count;
info.list[i].high_mark = high * info.list[i].count;
if (ioctl(fd, DRM_IOCTL_MARK_BUFS, &info.list[i])) {
int retval = -errno;
drmFree(info.list);
return retval;
}
}
drmFree(info.list);
return 0;
}
int drmFreeBufs(int fd, int count, int *list)
{
drm_buf_free_t request;
request.count = count;
request.list = list;
if (ioctl(fd, DRM_IOCTL_FREE_BUFS, &request)) return -errno;
return 0;
}
int drmClose(int fd)
{
unsigned long key = drmGetKeyFromFd(fd);
drmHashEntry *entry = drmGetEntry(fd);
drmHashDestroy(entry->tagTable);
entry->fd = 0;
entry->f = NULL;
entry->tagTable = NULL;
drmHashDelete(drmHashTable, key);
drmFree(entry);
return close(fd);
}
int drmMap(int fd,
drmHandle handle,
drmSize size,
drmAddressPtr address)
{
static unsigned long pagesize_mask = 0;
if (fd < 0) return -EINVAL;
if (!pagesize_mask)
pagesize_mask = getpagesize() - 1;
size = (size + pagesize_mask) & ~pagesize_mask;
*address = mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, handle);
if (*address == MAP_FAILED) return -errno;
return 0;
}
int drmUnmap(drmAddress address, drmSize size)
{
return munmap(address, size);
}
drmBufInfoPtr drmGetBufInfo(int fd)
{
drm_buf_info_t info;
drmBufInfoPtr retval;
int i;
info.count = 0;
info.list = NULL;
if (ioctl(fd, DRM_IOCTL_INFO_BUFS, &info)) return NULL;
if (info.count) {
if (!(info.list = drmMalloc(info.count * sizeof(*info.list))))
return NULL;
if (ioctl(fd, DRM_IOCTL_INFO_BUFS, &info)) {
drmFree(info.list);
return NULL;
}
/* Now, copy it all back into the
client-visible data structure... */
retval = drmMalloc(sizeof(*retval));
retval->count = info.count;
retval->list = drmMalloc(info.count * sizeof(*retval->list));
for (i = 0; i < info.count; i++) {
retval->list[i].count = info.list[i].count;
retval->list[i].size = info.list[i].size;
retval->list[i].low_mark = info.list[i].low_mark;
retval->list[i].high_mark = info.list[i].high_mark;
}
drmFree(info.list);
return retval;
}
return NULL;
}
drmBufMapPtr drmMapBufs(int fd)
{
drm_buf_map_t bufs;
drmBufMapPtr retval;
int i;
bufs.count = 0;
bufs.list = NULL;
if (ioctl(fd, DRM_IOCTL_MAP_BUFS, &bufs)) return NULL;
if (bufs.count) {
if (!(bufs.list = drmMalloc(bufs.count * sizeof(*bufs.list))))
return NULL;
if (ioctl(fd, DRM_IOCTL_MAP_BUFS, &bufs)) {
drmFree(bufs.list);
return NULL;
}
/* Now, copy it all back into the
client-visible data structure... */
retval = drmMalloc(sizeof(*retval));
retval->count = bufs.count;
retval->list = drmMalloc(bufs.count * sizeof(*retval->list));
for (i = 0; i < bufs.count; i++) {
retval->list[i].idx = bufs.list[i].idx;
retval->list[i].total = bufs.list[i].total;
retval->list[i].used = 0;
retval->list[i].address = bufs.list[i].address;
}
return retval;
}
return NULL;
}
int drmUnmapBufs(drmBufMapPtr bufs)
{
int i;
for (i = 0; i < bufs->count; i++) {
munmap(bufs->list[i].address, bufs->list[i].total);
}
return 0;
}
#define DRM_DMA_RETRY 16
int drmDMA(int fd, drmDMAReqPtr request)
{
drm_dma_t dma;
int ret, i = 0;
/* Copy to hidden structure */
dma.context = request->context;
dma.send_count = request->send_count;
dma.send_indices = request->send_list;
dma.send_sizes = request->send_sizes;
dma.flags = request->flags;
dma.request_count = request->request_count;
dma.request_size = request->request_size;
dma.request_indices = request->request_list;
dma.request_sizes = request->request_sizes;
do {
ret = ioctl( fd, DRM_IOCTL_DMA, &dma );
} while ( ret && errno == EAGAIN && i++ < DRM_DMA_RETRY );
if ( ret == 0 ) {
request->granted_count = dma.granted_count;
return 0;
} else {
return -errno;
}
}
int drmGetLock(int fd, drmContext context, drmLockFlags flags)
{
drm_lock_t lock;
lock.context = context;
lock.flags = 0;
if (flags & DRM_LOCK_READY) lock.flags |= _DRM_LOCK_READY;
if (flags & DRM_LOCK_QUIESCENT) lock.flags |= _DRM_LOCK_QUIESCENT;
if (flags & DRM_LOCK_FLUSH) lock.flags |= _DRM_LOCK_FLUSH;
if (flags & DRM_LOCK_FLUSH_ALL) lock.flags |= _DRM_LOCK_FLUSH_ALL;
if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES;
if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES;
while (ioctl(fd, DRM_IOCTL_LOCK, &lock))
;
return 0;
}
int drmUnlock(int fd, drmContext context)
{
drm_lock_t lock;
lock.context = context;
lock.flags = 0;
return ioctl(fd, DRM_IOCTL_UNLOCK, &lock);
}
drmContextPtr drmGetReservedContextList(int fd, int *count)
{
drm_ctx_res_t res;
drm_ctx_t *list;
drmContextPtr retval;
int i;
res.count = 0;
res.contexts = NULL;
if (ioctl(fd, DRM_IOCTL_RES_CTX, &res)) return NULL;
if (!res.count) return NULL;
if (!(list = drmMalloc(res.count * sizeof(*list)))) return NULL;
if (!(retval = drmMalloc(res.count * sizeof(*retval)))) {
drmFree(list);
return NULL;
}
res.contexts = list;
if (ioctl(fd, DRM_IOCTL_RES_CTX, &res)) return NULL;
for (i = 0; i < res.count; i++) retval[i] = list[i].handle;
drmFree(list);
*count = res.count;
return retval;
}
void drmFreeReservedContextList(drmContextPtr pt)
{
drmFree(pt);
}
int drmCreateContext(int fd, drmContextPtr handle)
{
drm_ctx_t ctx;
ctx.flags = 0; /* Modified with functions below */
if (ioctl(fd, DRM_IOCTL_ADD_CTX, &ctx)) return -errno;
*handle = ctx.handle;
return 0;
}
int drmSwitchToContext(int fd, drmContext context)
{
drm_ctx_t ctx;
ctx.handle = context;
if (ioctl(fd, DRM_IOCTL_SWITCH_CTX, &ctx)) return -errno;
return 0;
}
int drmSetContextFlags(int fd, drmContext context, drmContextFlags flags)
{
drm_ctx_t ctx;
/* Context preserving means that no context
switched are done between DMA buffers
from one context and the next. This is
suitable for use in the X server (which
promises to maintain hardware context,
or in the client-side library when
buffers are swapped on behalf of two
threads. */
ctx.handle = context;
ctx.flags = 0;
if (flags & DRM_CONTEXT_PRESERVED) ctx.flags |= _DRM_CONTEXT_PRESERVED;
if (flags & DRM_CONTEXT_2DONLY) ctx.flags |= _DRM_CONTEXT_2DONLY;
if (ioctl(fd, DRM_IOCTL_MOD_CTX, &ctx)) return -errno;
return 0;
}
int drmGetContextFlags(int fd, drmContext context, drmContextFlagsPtr flags)
{
drm_ctx_t ctx;
ctx.handle = context;
if (ioctl(fd, DRM_IOCTL_GET_CTX, &ctx)) return -errno;
*flags = 0;
if (ctx.flags & _DRM_CONTEXT_PRESERVED) *flags |= DRM_CONTEXT_PRESERVED;
if (ctx.flags & _DRM_CONTEXT_2DONLY) *flags |= DRM_CONTEXT_2DONLY;
return 0;
}
int drmDestroyContext(int fd, drmContext handle)
{
drm_ctx_t ctx;
ctx.handle = handle;
if (ioctl(fd, DRM_IOCTL_RM_CTX, &ctx)) return -errno;
return 0;
}
int drmCreateDrawable(int fd, drmDrawablePtr handle)
{
drm_draw_t draw;
if (ioctl(fd, DRM_IOCTL_ADD_DRAW, &draw)) return -errno;
*handle = draw.handle;
return 0;
}
int drmDestroyDrawable(int fd, drmDrawable handle)
{
drm_draw_t draw;
draw.handle = handle;
if (ioctl(fd, DRM_IOCTL_RM_DRAW, &draw)) return -errno;
return 0;
}
int drmAgpAcquire(int fd)
{
if (ioctl(fd, DRM_IOCTL_AGP_ACQUIRE, NULL)) return -errno;
return 0;
}
int drmAgpRelease(int fd)
{
if (ioctl(fd, DRM_IOCTL_AGP_RELEASE, NULL)) return -errno;
return 0;
}
int drmAgpEnable(int fd, unsigned long mode)
{
drm_agp_mode_t m;
m.mode = mode;
if (ioctl(fd, DRM_IOCTL_AGP_ENABLE, &m)) return -errno;
return 0;
}
int drmAgpAlloc(int fd, unsigned long size, unsigned long type,
unsigned long *address, unsigned long *handle)
{
drm_agp_buffer_t b;
*handle = 0;
b.size = size;
b.handle = 0;
b.type = type;
if (ioctl(fd, DRM_IOCTL_AGP_ALLOC, &b)) return -errno;
if (address != 0UL) *address = b.physical;
*handle = b.handle;
return 0;
}
int drmAgpFree(int fd, unsigned long handle)
{
drm_agp_buffer_t b;
b.size = 0;
b.handle = handle;
if (ioctl(fd, DRM_IOCTL_AGP_FREE, &b)) return -errno;
return 0;
}
int drmAgpBind(int fd, unsigned long handle, unsigned long offset)
{
drm_agp_binding_t b;
b.handle = handle;
b.offset = offset;
if (ioctl(fd, DRM_IOCTL_AGP_BIND, &b)) return -errno;
return 0;
}
int drmAgpUnbind(int fd, unsigned long handle)
{
drm_agp_binding_t b;
b.handle = handle;
b.offset = 0;
if (ioctl(fd, DRM_IOCTL_AGP_UNBIND, &b)) return -errno;
return 0;
}
int drmAgpVersionMajor(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return -errno;
return i.agp_version_major;
}
int drmAgpVersionMinor(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return -errno;
return i.agp_version_minor;
}
unsigned long drmAgpGetMode(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0;
return i.mode;
}
unsigned long drmAgpBase(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0;
return i.aperture_base;
}
unsigned long drmAgpSize(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0;
return i.aperture_size;
}
unsigned long drmAgpMemoryUsed(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0;
return i.memory_used;
}
unsigned long drmAgpMemoryAvail(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0;
return i.memory_allowed;
}
unsigned int drmAgpVendorId(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0;
return i.id_vendor;
}
unsigned int drmAgpDeviceId(int fd)
{
drm_agp_info_t i;
if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0;
return i.id_device;
}
int drmScatterGatherAlloc(int fd, unsigned long size, unsigned long *handle)
{
drm_scatter_gather_t sg;
*handle = 0;
sg.size = size;
sg.handle = 0;
if (ioctl(fd, DRM_IOCTL_SG_ALLOC, &sg)) return -errno;
*handle = sg.handle;
return 0;
}
int drmScatterGatherFree(int fd, unsigned long handle)
{
drm_scatter_gather_t sg;
sg.size = 0;
sg.handle = handle;
if (ioctl(fd, DRM_IOCTL_SG_FREE, &sg)) return -errno;
return 0;
}
int drmError(int err, const char *label)
{
switch (err) {
case DRM_ERR_NO_DEVICE: fprintf(stderr, "%s: no device\n", label); break;
case DRM_ERR_NO_ACCESS: fprintf(stderr, "%s: no access\n", label); break;
case DRM_ERR_NOT_ROOT: fprintf(stderr, "%s: not root\n", label); break;
case DRM_ERR_INVALID: fprintf(stderr, "%s: invalid args\n", label);break;
default:
if (err < 0) err = -err;
fprintf( stderr, "%s: error %d (%s)\n", label, err, strerror(err) );
break;
}
return 1;
}
int drmCtlInstHandler(int fd, int irq)
{
drm_control_t ctl;
ctl.func = DRM_INST_HANDLER;
ctl.irq = irq;
if (ioctl(fd, DRM_IOCTL_CONTROL, &ctl)) return -errno;
return 0;
}
int drmCtlUninstHandler(int fd)
{
drm_control_t ctl;
ctl.func = DRM_UNINST_HANDLER;
ctl.irq = 0;
if (ioctl(fd, DRM_IOCTL_CONTROL, &ctl)) return -errno;
return 0;
}
int drmFinish(int fd, int context, drmLockFlags flags)
{
drm_lock_t lock;
lock.context = context;
lock.flags = 0;
if (flags & DRM_LOCK_READY) lock.flags |= _DRM_LOCK_READY;
if (flags & DRM_LOCK_QUIESCENT) lock.flags |= _DRM_LOCK_QUIESCENT;
if (flags & DRM_LOCK_FLUSH) lock.flags |= _DRM_LOCK_FLUSH;
if (flags & DRM_LOCK_FLUSH_ALL) lock.flags |= _DRM_LOCK_FLUSH_ALL;
if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES;
if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES;
if (ioctl(fd, DRM_IOCTL_FINISH, &lock)) return -errno;
return 0;
}
int drmGetInterruptFromBusID(int fd, int busnum, int devnum, int funcnum)
{
drm_irq_busid_t p;
p.busnum = busnum;
p.devnum = devnum;
p.funcnum = funcnum;
if (ioctl(fd, DRM_IOCTL_IRQ_BUSID, &p)) return -errno;
return p.irq;
}
int drmAddContextTag(int fd, drmContext context, void *tag)
{
drmHashEntry *entry = drmGetEntry(fd);
if (drmHashInsert(entry->tagTable, context, tag)) {
drmHashDelete(entry->tagTable, context);
drmHashInsert(entry->tagTable, context, tag);
}
return 0;
}
int drmDelContextTag(int fd, drmContext context)
{
drmHashEntry *entry = drmGetEntry(fd);
return drmHashDelete(entry->tagTable, context);
}
void *drmGetContextTag(int fd, drmContext context)
{
drmHashEntry *entry = drmGetEntry(fd);
void *value;
if (drmHashLookup(entry->tagTable, context, &value)) return NULL;
return value;
}
int drmAddContextPrivateMapping(int fd, drmContext ctx_id, drmHandle handle)
{
drm_ctx_priv_map_t map;
map.ctx_id = ctx_id;
map.handle = (void *)handle;
if (ioctl(fd, DRM_IOCTL_SET_SAREA_CTX, &map)) return -errno;
return 0;
}
int drmGetContextPrivateMapping(int fd, drmContext ctx_id, drmHandlePtr handle)
{
drm_ctx_priv_map_t map;
map.ctx_id = ctx_id;
if (ioctl(fd, DRM_IOCTL_GET_SAREA_CTX, &map)) return -errno;
if (handle) *handle = (drmHandle)map.handle;
return 0;
}
int drmGetMap(int fd, int idx, drmHandle *offset, drmSize *size,
drmMapType *type, drmMapFlags *flags, drmHandle *handle,
int *mtrr)
{
drm_map_t map;
map.offset = idx;
if (ioctl(fd, DRM_IOCTL_GET_MAP, &map)) return -errno;
*offset = map.offset;
*size = map.size;
*type = map.type;
*flags = map.flags;
*handle = (unsigned long)map.handle;
*mtrr = map.mtrr;
return 0;
}
int drmGetClient(int fd, int idx, int *auth, int *pid, int *uid,
unsigned long *magic, unsigned long *iocs)
{
drm_client_t client;
client.idx = idx;
if (ioctl(fd, DRM_IOCTL_GET_CLIENT, &client)) return -errno;
*auth = client.auth;
*pid = client.pid;
*uid = client.uid;
*magic = client.magic;
*iocs = client.iocs;
return 0;
}
int drmGetStats(int fd, drmStatsT *stats)
{
drm_stats_t s;
int i;
if (ioctl(fd, DRM_IOCTL_GET_STATS, &s)) return -errno;
stats->count = 0;
memset(stats, 0, sizeof(*stats));
if (s.count > sizeof(stats->data)/sizeof(stats->data[0]))
return -1;
#define SET_VALUE \
stats->data[i].long_format = "%-20.20s"; \
stats->data[i].rate_format = "%8.8s"; \
stats->data[i].isvalue = 1; \
stats->data[i].verbose = 0
#define SET_COUNT \
stats->data[i].long_format = "%-20.20s"; \
stats->data[i].rate_format = "%5.5s"; \
stats->data[i].isvalue = 0; \
stats->data[i].mult_names = "kgm"; \
stats->data[i].mult = 1000; \
stats->data[i].verbose = 0
#define SET_BYTE \
stats->data[i].long_format = "%-20.20s"; \
stats->data[i].rate_format = "%5.5s"; \
stats->data[i].isvalue = 0; \
stats->data[i].mult_names = "KGM"; \
stats->data[i].mult = 1024; \
stats->data[i].verbose = 0
stats->count = s.count;
for (i = 0; i < s.count; i++) {
stats->data[i].value = s.data[i].value;
switch (s.data[i].type) {
case _DRM_STAT_LOCK:
stats->data[i].long_name = "Lock";
stats->data[i].rate_name = "Lock";
SET_VALUE;
break;
case _DRM_STAT_OPENS:
stats->data[i].long_name = "Opens";
stats->data[i].rate_name = "O";
SET_COUNT;
stats->data[i].verbose = 1;
break;
case _DRM_STAT_CLOSES:
stats->data[i].long_name = "Closes";
stats->data[i].rate_name = "Lock";
SET_COUNT;
stats->data[i].verbose = 1;
break;
case _DRM_STAT_IOCTLS:
stats->data[i].long_name = "Ioctls";
stats->data[i].rate_name = "Ioc/s";
SET_COUNT;
break;
case _DRM_STAT_LOCKS:
stats->data[i].long_name = "Locks";
stats->data[i].rate_name = "Lck/s";
SET_COUNT;
break;
case _DRM_STAT_UNLOCKS:
stats->data[i].long_name = "Unlocks";
stats->data[i].rate_name = "Unl/s";
SET_COUNT;
break;
case _DRM_STAT_IRQ:
stats->data[i].long_name = "IRQs";
stats->data[i].rate_name = "IRQ/s";
SET_COUNT;
break;
case _DRM_STAT_PRIMARY:
stats->data[i].long_name = "Primary Bytes";
stats->data[i].rate_name = "PB/s";
SET_BYTE;
break;
case _DRM_STAT_SECONDARY:
stats->data[i].long_name = "Secondary Bytes";
stats->data[i].rate_name = "SB/s";
SET_BYTE;
break;
case _DRM_STAT_DMA:
stats->data[i].long_name = "DMA";
stats->data[i].rate_name = "DMA/s";
SET_COUNT;
break;
case _DRM_STAT_SPECIAL:
stats->data[i].long_name = "Special DMA";
stats->data[i].rate_name = "dma/s";
SET_COUNT;
break;
case _DRM_STAT_MISSED:
stats->data[i].long_name = "Miss";
stats->data[i].rate_name = "Ms/s";
SET_COUNT;
break;
case _DRM_STAT_VALUE:
stats->data[i].long_name = "Value";
stats->data[i].rate_name = "Value";
SET_VALUE;
break;
case _DRM_STAT_BYTE:
stats->data[i].long_name = "Bytes";
stats->data[i].rate_name = "B/s";
SET_BYTE;
break;
case _DRM_STAT_COUNT:
default:
stats->data[i].long_name = "Count";
stats->data[i].rate_name = "Cnt/s";
SET_COUNT;
break;
}
}
return 0;
}
int drmCommandNone(int fd, unsigned long drmCommandIndex)
{
void *data = NULL; /* dummy */
unsigned long request;
request = DRM_IO( DRM_COMMAND_BASE + drmCommandIndex);
if (ioctl(fd, request, data)) {
return -errno;
}
return 0;
}
int drmCommandRead(int fd, unsigned long drmCommandIndex,
void *data, unsigned long size )
{
unsigned long request;
request = DRM_IOC( DRM_IOC_READ, DRM_IOCTL_BASE,
DRM_COMMAND_BASE + drmCommandIndex, size);
if (ioctl(fd, request, data)) {
return -errno;
}
return 0;
}
int drmCommandWrite(int fd, unsigned long drmCommandIndex,
void *data, unsigned long size )
{
unsigned long request;
request = DRM_IOC( DRM_IOC_WRITE, DRM_IOCTL_BASE,
DRM_COMMAND_BASE + drmCommandIndex, size);
if (ioctl(fd, request, data)) {
return -errno;
}
return 0;
}
int drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
void *data, unsigned long size )
{
unsigned long request;
request = DRM_IOC( DRM_IOC_READ|DRM_IOC_WRITE, DRM_IOCTL_BASE,
DRM_COMMAND_BASE + drmCommandIndex, size);
if (ioctl(fd, request, data)) {
return -errno;
}
return 0;
}
#if defined(XFree86Server) || defined(DRM_USE_MALLOC)
static void drmSIGIOHandler(int interrupt, void *closure)
{
unsigned long key;
void *value;
ssize_t count;
drm_ctx_t ctx;
typedef void (*_drmCallback)(int, void *, void *);
char buf[256];
drmContext old;
drmContext new;
void *oldctx;
void *newctx;
char *pt;
drmHashEntry *entry;
if (!drmHashTable) return;
if (drmHashFirst(drmHashTable, &key, &value)) {
entry = value;
do {
#if 0
fprintf(stderr, "Trying %d\n", entry->fd);
#endif
if ((count = read(entry->fd, buf, sizeof(buf)))) {
buf[count] = '\0';
#if 0
fprintf(stderr, "Got %s\n", buf);
#endif
for (pt = buf; *pt != ' '; ++pt); /* Find first space */
++pt;
old = strtol(pt, &pt, 0);
new = strtol(pt, NULL, 0);
oldctx = drmGetContextTag(entry->fd, old);
newctx = drmGetContextTag(entry->fd, new);
#if 0
fprintf(stderr, "%d %d %p %p\n", old, new, oldctx, newctx);
#endif
((_drmCallback)entry->f)(entry->fd, oldctx, newctx);
ctx.handle = new;
ioctl(entry->fd, DRM_IOCTL_NEW_CTX, &ctx);
}
} while (drmHashNext(drmHashTable, &key, &value));
}
}
int drmInstallSIGIOHandler(int fd, void (*f)(int, void *, void *))
{
drmHashEntry *entry;
entry = drmGetEntry(fd);
entry->f = f;
return xf86InstallSIGIOHandler(fd, drmSIGIOHandler, 0);
}
int drmRemoveSIGIOHandler(int fd)
{
drmHashEntry *entry = drmGetEntry(fd);
entry->f = NULL;
return xf86RemoveSIGIOHandler(fd);
}
#endif
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