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mesa-drm/linux/mach64_dma.c

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/* mach64_dma.c -- DMA support for mach64 (Rage Pro) driver -*- linux-c -*-
* Created: Sun Dec 03 19:20:26 2000 by gareth@valinux.com
*
* Copyright 2000 Gareth Hughes
* 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
* GARETH HUGHES 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:
* Gareth Hughes <gareth@valinux.com>
*/
#define __NO_VERSION__
#include "drmP.h"
#include "mach64_drv.h"
#include <linux/interrupt.h> /* For task queue support */
#include <linux/delay.h>
#define DO_IOREMAP(_m) (_m)->handle = drm_ioremap( (_m)->offset, (_m)->size )
#define DO_IOREMAPFREE(_m) \
do { \
if ( (_m)->handle && (_m)->size ) \
drm_ioremapfree( (_m)->handle, (_m)->size ); \
} while (0)
#define DO_FIND_MAP(_m, _o) \
do { \
int _i; \
for ( _i = 0 ; _i < dev->map_count ; _i++ ) { \
if ( dev->maplist[_i]->offset == _o ) { \
_m = dev->maplist[_i]; \
break; \
} \
} \
} while (0)
static unsigned long mach64_alloc_page( void )
{
unsigned long address;
address = __get_free_page( GFP_KERNEL );
if ( address == 0UL ) {
return 0;
}
atomic_inc( &virt_to_page(address)->count );
set_bit( PG_reserved, &virt_to_page(address)->flags );
return address;
}
static void mach64_free_page( unsigned long address )
{
if ( !address ) return;
atomic_dec( &virt_to_page(address)->count );
clear_bit( PG_reserved, &virt_to_page(address)->flags );
free_page( address );
return;
}
/* ================================================================
* Engine control
*/
int mach64_do_wait_for_fifo( drm_mach64_private_t *dev_priv, int entries )
{
int slots = 0, i;
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
slots = (MACH64_READ( MACH64_FIFO_STAT ) &
MACH64_FIFO_SLOT_MASK);
if ( slots <= (0x8000 >> entries) ) return 0;
udelay( 1 );
}
DRM_ERROR( "failed! slots=%d entries=%d\n", slots, entries );
return -EBUSY;
}
int mach64_do_wait_for_idle( drm_mach64_private_t *dev_priv )
{
int i, ret;
ret = mach64_do_wait_for_fifo( dev_priv, 16 );
if ( ret < 0 ) return ret;
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
if ( !(MACH64_READ( MACH64_GUI_STAT ) & MACH64_GUI_ACTIVE) ) {
return 0;
}
udelay( 1 );
}
DRM_ERROR( "failed! GUI_STAT=0x%08x\n",
MACH64_READ( MACH64_GUI_STAT ) );
return -EBUSY;
}
int mach64_do_engine_reset( drm_mach64_private_t *dev_priv )
{
u32 bus_cntl, gen_test_cntl;
/* Kill off any outstanding DMA transfers.
*/
bus_cntl = MACH64_READ( MACH64_BUS_CNTL );
MACH64_WRITE( MACH64_BUS_CNTL,
bus_cntl | MACH64_BUS_MASTER_DIS );
/* Reset the GUI engine (high to low transition).
*/
gen_test_cntl = MACH64_READ( MACH64_GEN_TEST_CNTL );
MACH64_WRITE( MACH64_GEN_TEST_CNTL,
gen_test_cntl | MACH64_GUI_ENGINE_ENABLE );
gen_test_cntl = MACH64_READ( MACH64_GEN_TEST_CNTL );
MACH64_WRITE( MACH64_GEN_TEST_CNTL,
gen_test_cntl & ~MACH64_GUI_ENGINE_ENABLE );
return 0;
}
static int mach64_do_dma_init( drm_device_t *dev, drm_mach64_init_t *init )
{
drm_mach64_private_t *dev_priv;
u32 tmp;
DRM_DEBUG( "%s\n", __FUNCTION__ );
dev_priv = drm_alloc( sizeof(drm_mach64_private_t), DRM_MEM_DRIVER );
if ( dev_priv == NULL )
return -ENOMEM;
dev->dev_private = (void *) dev_priv;
memset( dev_priv, 0, sizeof(drm_mach64_private_t) );
dev_priv->fb_bpp = init->fb_bpp;
dev_priv->front_offset = init->front_offset;
dev_priv->front_pitch = init->front_pitch;
dev_priv->back_offset = init->back_offset;
dev_priv->back_pitch = init->back_pitch;
dev_priv->depth_bpp = init->depth_bpp;
dev_priv->depth_offset = init->depth_offset;
dev_priv->depth_pitch = init->depth_pitch;
dev_priv->front_offset_pitch = (((dev_priv->front_pitch/8) << 22) |
(dev_priv->front_offset >> 3));
dev_priv->back_offset_pitch = (((dev_priv->back_pitch/8) << 22) |
(dev_priv->back_offset >> 3));
dev_priv->depth_offset_pitch = (((dev_priv->depth_pitch/8) << 22) |
(dev_priv->depth_offset >> 3));
dev_priv->usec_timeout = 1000000;
dev_priv->sarea = dev->maplist[0];
dev_priv->sarea_priv = (drm_mach64_sarea_t *)
((u8 *)dev_priv->sarea->handle +
init->sarea_priv_offset);
DO_FIND_MAP( dev_priv->fb, init->fb_offset );
DO_FIND_MAP( dev_priv->mmio, init->mmio_offset );
DO_FIND_MAP( dev_priv->buffers, init->buffers_offset );
DO_IOREMAP( dev_priv->buffers );
/* FIXME: Do the scratch register test for now, can remove
* later on.
*/
tmp = MACH64_READ( MACH64_SCRATCH_REG0 );
MACH64_WRITE( MACH64_SCRATCH_REG0, 0x55555555 );
if ( MACH64_READ( MACH64_SCRATCH_REG0 ) == 0x55555555 ) {
MACH64_WRITE( MACH64_SCRATCH_REG0, 0xaaaaaaaa );
if ( MACH64_READ( MACH64_SCRATCH_REG0 ) != 0xaaaaaaaa ) {
DRM_ERROR( "2nd scratch reg failed!\n" );
}
} else {
DRM_ERROR( "1st scratch reg failed!\n" );
}
MACH64_WRITE( MACH64_SCRATCH_REG0, tmp );
if ( 1 ) {
u32 *table = (u32 *) mach64_alloc_page();
u32 *data = (u32 *) mach64_alloc_page();
int i;
u32 bus_cntl, src_cntl;
mach64_do_engine_reset( dev_priv );
bus_cntl = 0x7b33a010;
src_cntl = 0x00000000;
mach64_do_wait_for_idle( dev_priv );
MACH64_WRITE( MACH64_BUS_CNTL, 0x7b33a010 );
mach64_do_wait_for_idle( dev_priv );
MACH64_WRITE( MACH64_DST_CNTL, 0x00000003 );
MACH64_WRITE( MACH64_DST_OFF_PITCH, 0x19000000 );
MACH64_WRITE( MACH64_Z_OFF_PITCH, 0x0a023280 );
MACH64_WRITE( MACH64_Z_CNTL, 0x00000100 );
MACH64_WRITE( MACH64_ALPHA_TST_CNTL, 0x00000000 );
MACH64_WRITE( MACH64_SRC_CNTL, 0x00000000 );
MACH64_WRITE( MACH64_SRC_OFF_PITCH, 0x19000000 );
MACH64_WRITE( MACH64_DP_PIX_WIDTH, 0x00040404 );
MACH64_WRITE( MACH64_DP_SRC, 0x00000100 );
mach64_do_wait_for_idle( dev_priv );
MACH64_WRITE( MACH64_SCALE_3D_CNTL, 0x00000000 );
MACH64_WRITE( MACH64_TEX_SIZE_PITCH, 0x05555555 );
MACH64_WRITE( MACH64_TEX_CNTL, 0x00000000 );
MACH64_WRITE( MACH64_SETUP_CNTL, 0x00000000 );
mach64_do_wait_for_idle( dev_priv );
MACH64_WRITE( MACH64_AGP_BASE, 0x00000000 );
MACH64_WRITE( MACH64_AGP_CNTL, 0x00000000 );
MACH64_WRITE( MACH64_DST_CNTL, 0x00000003 );
MACH64_WRITE( MACH64_GUI_TRAJ_CNTL, 0x00000003 );
MACH64_WRITE( MACH64_PAT_REG0, 0x11111111 );
#if 1
DRM_INFO( "\n" );
DRM_INFO( " AGP_BASE = 0x%08x\n", MACH64_READ( MACH64_AGP_BASE ) );
DRM_INFO( " AGP_CNTL = 0x%08x\n", MACH64_READ( MACH64_AGP_CNTL ) );
DRM_INFO( " ALPHA_TST_CNTL = 0x%08x\n", MACH64_READ( MACH64_ALPHA_TST_CNTL ) );
DRM_INFO( "\n" );
DRM_INFO( " BM_COMMAND = 0x%08x\n", MACH64_READ( MACH64_BM_COMMAND ) );
DRM_INFO( "BM_FRAME_BUF_OFFSET = 0x%08x\n", MACH64_READ( MACH64_BM_FRAME_BUF_OFFSET ) );
DRM_INFO( " BM_GUI_TABLE = 0x%08x\n", MACH64_READ( MACH64_BM_GUI_TABLE ) );
DRM_INFO( " BM_STATUS = 0x%08x\n", MACH64_READ( MACH64_BM_STATUS ) );
DRM_INFO( " BM_SYSTEM_MEM_ADDR = 0x%08x\n", MACH64_READ( MACH64_BM_SYSTEM_MEM_ADDR ) );
DRM_INFO( " BM_SYSTEM_TABLE = 0x%08x\n", MACH64_READ( MACH64_BM_SYSTEM_TABLE ) );
DRM_INFO( " BUS_CNTL = 0x%08x\n", MACH64_READ( MACH64_BUS_CNTL ) );
DRM_INFO( "\n" );
/* DRM_INFO( " CLOCK_CNTL = 0x%08x\n", MACH64_READ( MACH64_CLOCK_CNTL ) ); */
DRM_INFO( " CLR_CMP_CLR = 0x%08x\n", MACH64_READ( MACH64_CLR_CMP_CLR ) );
DRM_INFO( " CLR_CMP_CNTL = 0x%08x\n", MACH64_READ( MACH64_CLR_CMP_CNTL ) );
/* DRM_INFO( " CLR_CMP_MSK = 0x%08x\n", MACH64_READ( MACH64_CLR_CMP_MSK ) ); */
DRM_INFO( " CONFIG_CHIP_ID = 0x%08x\n", MACH64_READ( MACH64_CONFIG_CHIP_ID ) );
DRM_INFO( " CONFIG_CNTL = 0x%08x\n", MACH64_READ( MACH64_CONFIG_CNTL ) );
DRM_INFO( " CONFIG_STAT0 = 0x%08x\n", MACH64_READ( MACH64_CONFIG_STAT0 ) );
DRM_INFO( " CONFIG_STAT1 = 0x%08x\n", MACH64_READ( MACH64_CONFIG_STAT1 ) );
DRM_INFO( " CONFIG_STAT2 = 0x%08x\n", MACH64_READ( MACH64_CONFIG_STAT2 ) );
DRM_INFO( " CRC_SIG = 0x%08x\n", MACH64_READ( MACH64_CRC_SIG ) );
DRM_INFO( " CUSTOM_MACRO_CNTL = 0x%08x\n", MACH64_READ( MACH64_CUSTOM_MACRO_CNTL ) );
DRM_INFO( "\n" );
/* DRM_INFO( " DAC_CNTL = 0x%08x\n", MACH64_READ( MACH64_DAC_CNTL ) ); */
/* DRM_INFO( " DAC_REGS = 0x%08x\n", MACH64_READ( MACH64_DAC_REGS ) ); */
DRM_INFO( " DP_BKGD_CLR = 0x%08x\n", MACH64_READ( MACH64_DP_BKGD_CLR ) );
DRM_INFO( " DP_FRGD_CLR = 0x%08x\n", MACH64_READ( MACH64_DP_FRGD_CLR ) );
DRM_INFO( " DP_MIX = 0x%08x\n", MACH64_READ( MACH64_DP_MIX ) );
DRM_INFO( " DP_PIX_WIDTH = 0x%08x\n", MACH64_READ( MACH64_DP_PIX_WIDTH ) );
DRM_INFO( " DP_SRC = 0x%08x\n", MACH64_READ( MACH64_DP_SRC ) );
DRM_INFO( " DP_WRITE_MASK = 0x%08x\n", MACH64_READ( MACH64_DP_WRITE_MASK ) );
DRM_INFO( " DSP_CONFIG = 0x%08x\n", MACH64_READ( MACH64_DSP_CONFIG ) );
DRM_INFO( " DSP_ON_OFF = 0x%08x\n", MACH64_READ( MACH64_DSP_ON_OFF ) );
DRM_INFO( " DST_CNTL = 0x%08x\n", MACH64_READ( MACH64_DST_CNTL ) );
DRM_INFO( " DST_OFF_PITCH = 0x%08x\n", MACH64_READ( MACH64_DST_OFF_PITCH ) );
DRM_INFO( "\n" );
/* DRM_INFO( " EXT_DAC_REGS = 0x%08x\n", MACH64_READ( MACH64_EXT_DAC_REGS ) ); */
DRM_INFO( " EXT_MEM_CNTL = 0x%08x\n", MACH64_READ( MACH64_EXT_MEM_CNTL ) );
DRM_INFO( "\n" );
DRM_INFO( " FIFO_STAT = 0x%08x\n", MACH64_READ( MACH64_FIFO_STAT ) );
DRM_INFO( "\n" );
DRM_INFO( " GEN_TEST_CNTL = 0x%08x\n", MACH64_READ( MACH64_GEN_TEST_CNTL ) );
/* DRM_INFO( " GP_IO = 0x%08x\n", MACH64_READ( MACH64_GP_IO ) ); */
DRM_INFO( " GUI_CMDFIFO_DATA = 0x%08x\n", MACH64_READ( MACH64_GUI_CMDFIFO_DATA ) );
DRM_INFO( " GUI_CMDFIFO_DEBUG = 0x%08x\n", MACH64_READ( MACH64_GUI_CMDFIFO_DEBUG ) );
DRM_INFO( " GUI_CNTL = 0x%08x\n", MACH64_READ( MACH64_GUI_CNTL ) );
DRM_INFO( " GUI_STAT = 0x%08x\n", MACH64_READ( MACH64_GUI_STAT ) );
DRM_INFO( " GUI_TRAJ_CNTL = 0x%08x\n", MACH64_READ( MACH64_GUI_TRAJ_CNTL ) );
DRM_INFO( "\n" );
DRM_INFO( " HOST_CNTL = 0x%08x\n", MACH64_READ( MACH64_HOST_CNTL ) );
DRM_INFO( " HW_DEBUG = 0x%08x\n", MACH64_READ( MACH64_HW_DEBUG ) );
DRM_INFO( "\n" );
DRM_INFO( " MEM_ADDR_CONFIG = 0x%08x\n", MACH64_READ( MACH64_MEM_ADDR_CONFIG ) );
DRM_INFO( " MEM_BUF_CNTL = 0x%08x\n", MACH64_READ( MACH64_MEM_BUF_CNTL ) );
DRM_INFO( "\n" );
DRM_INFO( " SCALE_3D_CNTL = 0x%08x\n", MACH64_READ( MACH64_SCALE_3D_CNTL ) );
DRM_INFO( " SCRATCH_REG0 = 0x%08x\n", MACH64_READ( MACH64_SCRATCH_REG0 ) );
DRM_INFO( " SCRATCH_REG1 = 0x%08x\n", MACH64_READ( MACH64_SCRATCH_REG1 ) );
DRM_INFO( " SETUP_CNTL = 0x%08x\n", MACH64_READ( MACH64_SETUP_CNTL ) );
DRM_INFO( " SRC_CNTL = 0x%08x\n", MACH64_READ( MACH64_SRC_CNTL ) );
DRM_INFO( "\n" );
DRM_INFO( " TEX_CNTL = 0x%08x\n", MACH64_READ( MACH64_TEX_CNTL ) );
DRM_INFO( " TEX_SIZE_PITCH = 0x%08x\n", MACH64_READ( MACH64_TEX_SIZE_PITCH ) );
DRM_INFO( " TIMER_CONFIG = 0x%08x\n", MACH64_READ( MACH64_TIMER_CONFIG ) );
DRM_INFO( "\n" );
DRM_INFO( " Z_CNTL = 0x%08x\n", MACH64_READ( MACH64_Z_CNTL ) );
DRM_INFO( " Z_OFF_PITCH = 0x%08x\n", MACH64_READ( MACH64_Z_OFF_PITCH ) );
DRM_INFO( "\n" );
#endif
data[0] = 0x000000a0;
data[1] = 0x22222222;
data[2] = 0x000000a0;
data[3] = 0x22222222;
data[4] = 0x000000a0;
data[5] = 0x22222222;
data[6] = 0x0000006d;
data[7] = 0x00000000;
table[0] = MACH64_BM_ADDR + APERTURE_OFFSET;
table[1] = virt_to_phys(data);
table[2] = 8 * sizeof(u32) | 0xc0000000;
table[3] = 0x00000000;
DRM_INFO( "table[0] = 0x%08x\n", table[0] );
DRM_INFO( "table[1] = 0x%08x\n", table[1] );
DRM_INFO( "table[2] = 0x%08x\n", table[2] );
DRM_INFO( "table[3] = 0x%08x\n", table[3] );
for ( i = 0 ; i < 8 ; i++) {
DRM_INFO( " data[%d] = 0x%08x\n", i, data[i] );
}
mb();
DRM_INFO( "waiting for idle...\n" );
mach64_do_wait_for_idle( dev_priv );
DRM_INFO( "waiting for idle... done.\n" );
DRM_INFO( "BUS_CNTL = 0x%08x\n", bus_cntl );
DRM_INFO( "SRC_CNTL = 0x%08x\n", src_cntl );
DRM_INFO( "\n" );
DRM_INFO( "data = 0x%08x\n", virt_to_phys(data) );
DRM_INFO( "table = 0x%08x\n", virt_to_phys(table) );
DRM_INFO( "starting DMA transfer...\n" );
MACH64_READ( MACH64_BUS_CNTL );
MACH64_WRITE( MACH64_BUS_CNTL, bus_cntl );
MACH64_WRITE( MACH64_BM_GUI_TABLE_CMD, virt_to_phys(table) );
MACH64_READ( MACH64_SRC_CNTL );
MACH64_WRITE( MACH64_SRC_CNTL, 0x00000f00 );
DRM_INFO( "waiting for idle...\n" );
mach64_do_wait_for_idle( dev_priv );
/* Kick off the transfer */
MACH64_WRITE( MACH64_DST_HEIGHT_WIDTH, 0 );
DRM_INFO( "starting DMA transfer... done.\n" );
for ( i = 0 ; i < 1000 ; i++ ) {
udelay( 1 );
}
done:
DRM_INFO( "waiting for idle 0...\n" );
mach64_do_wait_for_idle( dev_priv );
DRM_INFO( "\n" );
DRM_INFO( "BUS_CNTL = 0x%08x\n",
MACH64_READ( MACH64_BUS_CNTL ) );
DRM_INFO( "SRC_CNTL = 0x%08x\n",
MACH64_READ( MACH64_SRC_CNTL ) );
DRM_INFO( "PAT_REG0 = 0x%08x\n",
MACH64_READ( MACH64_PAT_REG0 ) );
DRM_INFO( "\n" );
DRM_INFO( "GUI_CMDFIFO_DEBUG = 0x%08x\n",
MACH64_READ( MACH64_GUI_CMDFIFO_DEBUG ) );
DRM_INFO( "GUI_CMDFIFO_DATA = 0x%08x\n",
MACH64_READ( MACH64_GUI_CMDFIFO_DATA ) );
DRM_INFO( "FIFO_STAT = 0x%08x\n",
MACH64_READ( MACH64_FIFO_STAT ) );
DRM_INFO( "\n" );
DRM_INFO( "BM_FRAME_BUF_OFFSET = 0x%08x\n",
MACH64_READ( MACH64_BM_FRAME_BUF_OFFSET ) );
DRM_INFO( "BM_SYSTEM_MEM_ADDR = 0x%08x\n",
MACH64_READ( MACH64_BM_SYSTEM_MEM_ADDR ) );
DRM_INFO( "BM_COMMAND = 0x%08x\n",
MACH64_READ( MACH64_BM_COMMAND ) );
DRM_INFO( "BM_STATUS = 0x%08x\n",
MACH64_READ( MACH64_BM_STATUS ) );
DRM_INFO( "BM_SYSTEM_TABLE = 0x%08x\n",
MACH64_READ( MACH64_BM_SYSTEM_TABLE ) );
DRM_INFO( "BM_HOSTDATA = 0x%08x\n",
MACH64_READ( MACH64_BM_HOSTDATA ) );
DRM_INFO( "BM_ADDR/BM_DATA = 0x%08x\n",
MACH64_READ( MACH64_BM_ADDR ) );
DRM_INFO( "BM_GUI_TABLE = 0x%08x\n",
MACH64_READ( MACH64_BM_GUI_TABLE ) );
DRM_INFO( "BM_GUI_TABLE_CMD = 0x%08x\n",
MACH64_READ( MACH64_BM_GUI_TABLE_CMD ) );
DRM_INFO( "freeing memory.\n" );
mach64_free_page( (unsigned long)data );
mach64_free_page( (unsigned long)table );
}
return 0;
}
static int mach64_do_dma_cleanup( drm_device_t *dev )
{
DRM_DEBUG( "%s\n", __FUNCTION__ );
if ( dev->dev_private ) {
drm_mach64_private_t *dev_priv = dev->dev_private;
DO_IOREMAPFREE( dev_priv->buffers );
drm_free( dev_priv, sizeof(drm_mach64_private_t),
DRM_MEM_DRIVER );
dev->dev_private = NULL;
}
return 0;
}
int mach64_dma_init( 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_mach64_init_t init;
if ( copy_from_user( &init, (drm_mach64_init_t *)arg, sizeof(init) ) )
return -EFAULT;
switch ( init.func ) {
case MACH64_INIT_DMA:
return mach64_do_dma_init( dev, &init );
case MACH64_CLEANUP_DMA:
return mach64_do_dma_cleanup( dev );
}
return -EINVAL;
}
int mach64_dma_idle( 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_mach64_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "%s\n", __FUNCTION__ );
if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
dev->lock.pid != current->pid ) {
DRM_ERROR( "%s called without lock held\n", __FUNCTION__ );
return -EINVAL;
}
return mach64_do_wait_for_idle( dev_priv );
}
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