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/* r128_cce.c -- ATI Rage 128 driver -*- linux-c -*-
* Created: Wed Apr 5 19:24:19 2000 by kevin@precisioninsight.com
*
* Copyright 2000 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:
* Gareth Hughes <gareth@valinux.com>
*/
#define __NO_VERSION__
#include "r128.h"
#include "drmP.h"
#include "r128_drv.h"
#include <linux/interrupt.h> /* For task queue support */
#include <linux/delay.h>
#define R128_FIFO_DEBUG 0
/* CCE microcode (from ATI) */
static u32 r128_cce_microcode[] = {
0, 276838400, 0, 268449792, 2, 142, 2, 145, 0, 1076765731, 0,
1617039951, 0, 774592877, 0, 1987540286, 0, 2307490946U, 0,
599558925, 0, 589505315, 0, 596487092, 0, 589505315, 1,
11544576, 1, 206848, 1, 311296, 1, 198656, 2, 912273422, 11,
262144, 0, 0, 1, 33559837, 1, 7438, 1, 14809, 1, 6615, 12, 28,
1, 6614, 12, 28, 2, 23, 11, 18874368, 0, 16790922, 1, 409600, 9,
30, 1, 147854772, 16, 420483072, 3, 8192, 0, 10240, 1, 198656,
1, 15630, 1, 51200, 10, 34858, 9, 42, 1, 33559823, 2, 10276, 1,
15717, 1, 15718, 2, 43, 1, 15936948, 1, 570480831, 1, 14715071,
12, 322123831, 1, 33953125, 12, 55, 1, 33559908, 1, 15718, 2,
46, 4, 2099258, 1, 526336, 1, 442623, 4, 4194365, 1, 509952, 1,
459007, 3, 0, 12, 92, 2, 46, 12, 176, 1, 15734, 1, 206848, 1,
18432, 1, 133120, 1, 100670734, 1, 149504, 1, 165888, 1,
15975928, 1, 1048576, 6, 3145806, 1, 15715, 16, 2150645232U, 2,
268449859, 2, 10307, 12, 176, 1, 15734, 1, 15735, 1, 15630, 1,
15631, 1, 5253120, 6, 3145810, 16, 2150645232U, 1, 15864, 2, 82,
1, 343310, 1, 1064207, 2, 3145813, 1, 15728, 1, 7817, 1, 15729,
3, 15730, 12, 92, 2, 98, 1, 16168, 1, 16167, 1, 16002, 1, 16008,
1, 15974, 1, 15975, 1, 15990, 1, 15976, 1, 15977, 1, 15980, 0,
15981, 1, 10240, 1, 5253120, 1, 15720, 1, 198656, 6, 110, 1,
180224, 1, 103824738, 2, 112, 2, 3145839, 0, 536885440, 1,
114880, 14, 125, 12, 206975, 1, 33559995, 12, 198784, 0,
33570236, 1, 15803, 0, 15804, 3, 294912, 1, 294912, 3, 442370,
1, 11544576, 0, 811612160, 1, 12593152, 1, 11536384, 1,
14024704, 7, 310382726, 0, 10240, 1, 14796, 1, 14797, 1, 14793,
1, 14794, 0, 14795, 1, 268679168, 1, 9437184, 1, 268449792, 1,
198656, 1, 9452827, 1, 1075854602, 1, 1075854603, 1, 557056, 1,
114880, 14, 159, 12, 198784, 1, 1109409213, 12, 198783, 1,
1107312059, 12, 198784, 1, 1109409212, 2, 162, 1, 1075854781, 1,
1073757627, 1, 1075854780, 1, 540672, 1, 10485760, 6, 3145894,
16, 274741248, 9, 168, 3, 4194304, 3, 4209949, 0, 0, 0, 256, 14,
174, 1, 114857, 1, 33560007, 12, 176, 0, 10240, 1, 114858, 1,
33560018, 1, 114857, 3, 33560007, 1, 16008, 1, 114874, 1,
33560360, 1, 114875, 1, 33560154, 0, 15963, 0, 256, 0, 4096, 1,
409611, 9, 188, 0, 10240, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
int R128_READ_PLL(drm_device_t *dev, int addr)
{
drm_r128_private_t *dev_priv = dev->dev_private;
R128_WRITE8(R128_CLOCK_CNTL_INDEX, addr & 0x1f);
return R128_READ(R128_CLOCK_CNTL_DATA);
}
#if R128_FIFO_DEBUG
static void r128_status( drm_r128_private_t *dev_priv )
{
printk( "GUI_STAT = 0x%08x\n",
(unsigned int)R128_READ( R128_GUI_STAT ) );
printk( "PM4_STAT = 0x%08x\n",
(unsigned int)R128_READ( R128_PM4_STAT ) );
printk( "PM4_BUFFER_DL_WPTR = 0x%08x\n",
(unsigned int)R128_READ( R128_PM4_BUFFER_DL_WPTR ) );
printk( "PM4_BUFFER_DL_RPTR = 0x%08x\n",
(unsigned int)R128_READ( R128_PM4_BUFFER_DL_RPTR ) );
printk( "PM4_MICRO_CNTL = 0x%08x\n",
(unsigned int)R128_READ( R128_PM4_MICRO_CNTL ) );
printk( "PM4_BUFFER_CNTL = 0x%08x\n",
(unsigned int)R128_READ( R128_PM4_BUFFER_CNTL ) );
}
#endif
/* ================================================================
* Engine, FIFO control
*/
static int r128_do_pixcache_flush( drm_r128_private_t *dev_priv )
{
u32 tmp;
int i;
tmp = R128_READ( R128_PC_NGUI_CTLSTAT ) | R128_PC_FLUSH_ALL;
R128_WRITE( R128_PC_NGUI_CTLSTAT, tmp );
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
if ( !(R128_READ( R128_PC_NGUI_CTLSTAT ) & R128_PC_BUSY) ) {
return 0;
}
udelay( 1 );
}
#if R128_FIFO_DEBUG
DRM_ERROR( "%s failed!\n", __FUNCTION__ );
#endif
return -EBUSY;
}
static int r128_do_wait_for_fifo( drm_r128_private_t *dev_priv, int entries )
{
int i;
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
int slots = R128_READ( R128_GUI_STAT ) & R128_GUI_FIFOCNT_MASK;
if ( slots >= entries ) return 0;
udelay( 1 );
}
#if R128_FIFO_DEBUG
DRM_ERROR( "%s failed!\n", __FUNCTION__ );
#endif
return -EBUSY;
}
int r128_do_wait_for_idle( drm_r128_private_t *dev_priv )
{
int i, ret;
ret = r128_do_wait_for_fifo( dev_priv, 64 );
if ( ret < 0 ) return ret;
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
if ( !(R128_READ( R128_GUI_STAT ) & R128_GUI_ACTIVE) ) {
r128_do_pixcache_flush( dev_priv );
return 0;
}
udelay( 1 );
}
#if R128_FIFO_DEBUG
DRM_ERROR( "%s failed!\n", __FUNCTION__ );
#endif
return -EBUSY;
}
/* ================================================================
* CCE control, initialization
*/
/* Load the microcode for the CCE */
static void r128_cce_load_microcode( drm_r128_private_t *dev_priv )
{
int i;
DRM_DEBUG( "%s\n", __FUNCTION__ );
r128_do_wait_for_idle( dev_priv );
R128_WRITE( R128_PM4_MICROCODE_ADDR, 0 );
for ( i = 0 ; i < 256 ; i++ ) {
R128_WRITE( R128_PM4_MICROCODE_DATAH,
r128_cce_microcode[i * 2] );
R128_WRITE( R128_PM4_MICROCODE_DATAL,
r128_cce_microcode[i * 2 + 1] );
}
}
/* Flush any pending commands to the CCE. This should only be used just
* prior to a wait for idle, as it informs the engine that the command
* stream is ending.
*/
static void r128_do_cce_flush( drm_r128_private_t *dev_priv )
{
u32 tmp;
tmp = R128_READ( R128_PM4_BUFFER_DL_WPTR ) | R128_PM4_BUFFER_DL_DONE;
R128_WRITE( R128_PM4_BUFFER_DL_WPTR, tmp );
}
/* Wait for the CCE to go idle.
*/
int r128_do_cce_idle( drm_r128_private_t *dev_priv )
{
int i;
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
if ( GET_RING_HEAD( &dev_priv->ring ) == dev_priv->ring.tail ) {
int pm4stat = R128_READ( R128_PM4_STAT );
if ( ( (pm4stat & R128_PM4_FIFOCNT_MASK) >=
dev_priv->cce_fifo_size ) &&
!(pm4stat & (R128_PM4_BUSY |
R128_PM4_GUI_ACTIVE)) ) {
return r128_do_pixcache_flush( dev_priv );
}
}
udelay( 1 );
}
#if R128_FIFO_DEBUG
DRM_ERROR( "failed!\n" );
r128_status( dev_priv );
#endif
return -EBUSY;
}
/* Start the Concurrent Command Engine.
*/
static void r128_do_cce_start( drm_r128_private_t *dev_priv )
{
r128_do_wait_for_idle( dev_priv );
R128_WRITE( R128_PM4_BUFFER_CNTL,
dev_priv->cce_mode | dev_priv->ring.size_l2qw );
R128_READ( R128_PM4_BUFFER_ADDR ); /* as per the sample code */
R128_WRITE( R128_PM4_MICRO_CNTL, R128_PM4_MICRO_FREERUN );
dev_priv->cce_running = 1;
}
/* Reset the Concurrent Command Engine. This will not flush any pending
* commands, so you must wait for the CCE command stream to complete
* before calling this routine.
*/
static void r128_do_cce_reset( drm_r128_private_t *dev_priv )
{
R128_WRITE( R128_PM4_BUFFER_DL_WPTR, 0 );
R128_WRITE( R128_PM4_BUFFER_DL_RPTR, 0 );
SET_RING_HEAD( &dev_priv->ring, 0 );
dev_priv->ring.tail = 0;
}
/* Stop the Concurrent Command Engine. This will not flush any pending
* commands, so you must flush the command stream and wait for the CCE
* to go idle before calling this routine.
*/
static void r128_do_cce_stop( drm_r128_private_t *dev_priv )
{
R128_WRITE( R128_PM4_MICRO_CNTL, 0 );
R128_WRITE( R128_PM4_BUFFER_CNTL, R128_PM4_NONPM4 );
dev_priv->cce_running = 0;
}
/* Reset the engine. This will stop the CCE if it is running.
*/
static int r128_do_engine_reset( drm_device_t *dev )
{
drm_r128_private_t *dev_priv = dev->dev_private;
u32 clock_cntl_index, mclk_cntl, gen_reset_cntl;
r128_do_pixcache_flush( dev_priv );
clock_cntl_index = R128_READ( R128_CLOCK_CNTL_INDEX );
mclk_cntl = R128_READ_PLL( dev, R128_MCLK_CNTL );
R128_WRITE_PLL( R128_MCLK_CNTL,
mclk_cntl | R128_FORCE_GCP | R128_FORCE_PIPE3D_CP );
gen_reset_cntl = R128_READ( R128_GEN_RESET_CNTL );
/* Taken from the sample code - do not change */
R128_WRITE( R128_GEN_RESET_CNTL,
gen_reset_cntl | R128_SOFT_RESET_GUI );
R128_READ( R128_GEN_RESET_CNTL );
R128_WRITE( R128_GEN_RESET_CNTL,
gen_reset_cntl & ~R128_SOFT_RESET_GUI );
R128_READ( R128_GEN_RESET_CNTL );
R128_WRITE_PLL( R128_MCLK_CNTL, mclk_cntl );
R128_WRITE( R128_CLOCK_CNTL_INDEX, clock_cntl_index );
R128_WRITE( R128_GEN_RESET_CNTL, gen_reset_cntl );
/* Reset the CCE ring */
r128_do_cce_reset( dev_priv );
/* The CCE is no longer running after an engine reset */
dev_priv->cce_running = 0;
/* Reset any pending vertex, indirect buffers */
r128_freelist_reset( dev );
return 0;
}
static void r128_cce_init_ring_buffer( drm_device_t *dev,
drm_r128_private_t *dev_priv )
{
u32 ring_start;
u32 tmp;
DRM_DEBUG( "%s\n", __FUNCTION__ );
/* The manual (p. 2) says this address is in "VM space". This
* means it's an offset from the start of AGP space.
*/
#if __REALLY_HAVE_AGP
if ( !dev_priv->is_pci )
ring_start = dev_priv->cce_ring->offset - dev->agp->base;
else
#endif
ring_start = dev_priv->cce_ring->offset - dev->sg->handle;
R128_WRITE( R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET );
R128_WRITE( R128_PM4_BUFFER_DL_WPTR, 0 );
R128_WRITE( R128_PM4_BUFFER_DL_RPTR, 0 );
/* DL_RPTR_ADDR is a physical address in AGP space. */
SET_RING_HEAD( &dev_priv->ring, 0 );
if ( !dev_priv->is_pci ) {
R128_WRITE( R128_PM4_BUFFER_DL_RPTR_ADDR,
dev_priv->ring_rptr->offset );
} else {
drm_sg_mem_t *entry = dev->sg;
unsigned long tmp_ofs, page_ofs;
tmp_ofs = dev_priv->ring_rptr->offset - dev->sg->handle;
page_ofs = tmp_ofs >> PAGE_SHIFT;
R128_WRITE( R128_PM4_BUFFER_DL_RPTR_ADDR,
entry->busaddr[page_ofs]);
DRM_DEBUG( "ring rptr: offset=0x%08x handle=0x%08lx\n",
entry->busaddr[page_ofs],
entry->handle + tmp_ofs );
}
/* Set watermark control */
R128_WRITE( R128_PM4_BUFFER_WM_CNTL,
((R128_WATERMARK_L/4) << R128_WMA_SHIFT)
| ((R128_WATERMARK_M/4) << R128_WMB_SHIFT)
| ((R128_WATERMARK_N/4) << R128_WMC_SHIFT)
| ((R128_WATERMARK_K/64) << R128_WB_WM_SHIFT) );
/* Force read. Why? Because it's in the examples... */
R128_READ( R128_PM4_BUFFER_ADDR );
/* Turn on bus mastering */
tmp = R128_READ( R128_BUS_CNTL ) & ~R128_BUS_MASTER_DIS;
R128_WRITE( R128_BUS_CNTL, tmp );
}
static int r128_do_init_cce( drm_device_t *dev, drm_r128_init_t *init )
{
drm_r128_private_t *dev_priv;
struct list_head *list;
DRM_DEBUG( "%s\n", __FUNCTION__ );
dev_priv = DRM(alloc)( sizeof(drm_r128_private_t), DRM_MEM_DRIVER );
if ( dev_priv == NULL )
return -ENOMEM;
memset( dev_priv, 0, sizeof(drm_r128_private_t) );
dev_priv->is_pci = init->is_pci;
if ( dev_priv->is_pci && !dev->sg ) {
DRM_ERROR( "PCI GART memory not allocated!\n" );
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
dev_priv->usec_timeout = init->usec_timeout;
if ( dev_priv->usec_timeout < 1 ||
dev_priv->usec_timeout > R128_MAX_USEC_TIMEOUT ) {
DRM_DEBUG( "TIMEOUT problem!\n" );
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
dev_priv->cce_mode = init->cce_mode;
/* GH: Simple idle check.
*/
atomic_set( &dev_priv->idle_count, 0 );
/* We don't support anything other than bus-mastering ring mode,
* but the ring can be in either AGP or PCI space for the ring
* read pointer.
*/
if ( ( init->cce_mode != R128_PM4_192BM ) &&
( init->cce_mode != R128_PM4_128BM_64INDBM ) &&
( init->cce_mode != R128_PM4_64BM_128INDBM ) &&
( init->cce_mode != R128_PM4_64BM_64VCBM_64INDBM ) ) {
DRM_DEBUG( "Bad cce_mode!\n" );
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
switch ( init->cce_mode ) {
case R128_PM4_NONPM4:
dev_priv->cce_fifo_size = 0;
break;
case R128_PM4_192PIO:
case R128_PM4_192BM:
dev_priv->cce_fifo_size = 192;
break;
case R128_PM4_128PIO_64INDBM:
case R128_PM4_128BM_64INDBM:
dev_priv->cce_fifo_size = 128;
break;
case R128_PM4_64PIO_128INDBM:
case R128_PM4_64BM_128INDBM:
case R128_PM4_64PIO_64VCBM_64INDBM:
case R128_PM4_64BM_64VCBM_64INDBM:
case R128_PM4_64PIO_64VCPIO_64INDPIO:
dev_priv->cce_fifo_size = 64;
break;
}
switch ( init->fb_bpp ) {
case 16:
dev_priv->color_fmt = R128_DATATYPE_RGB565;
break;
case 32:
default:
dev_priv->color_fmt = R128_DATATYPE_ARGB8888;
break;
}
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;
switch ( init->depth_bpp ) {
case 16:
dev_priv->depth_fmt = R128_DATATYPE_RGB565;
break;
case 24:
case 32:
default:
dev_priv->depth_fmt = R128_DATATYPE_ARGB8888;
break;
}
dev_priv->depth_offset = init->depth_offset;
dev_priv->depth_pitch = init->depth_pitch;
dev_priv->span_offset = init->span_offset;
dev_priv->front_pitch_offset_c = (((dev_priv->front_pitch/8) << 21) |
(dev_priv->front_offset >> 5));
dev_priv->back_pitch_offset_c = (((dev_priv->back_pitch/8) << 21) |
(dev_priv->back_offset >> 5));
dev_priv->depth_pitch_offset_c = (((dev_priv->depth_pitch/8) << 21) |
(dev_priv->depth_offset >> 5) |
R128_DST_TILE);
dev_priv->span_pitch_offset_c = (((dev_priv->depth_pitch/8) << 21) |
(dev_priv->span_offset >> 5));
list_for_each(list, &dev->maplist->head) {
drm_map_list_t *r_list = (drm_map_list_t *)list;
if( r_list->map &&
r_list->map->type == _DRM_SHM &&
r_list->map->flags & _DRM_CONTAINS_LOCK ) {
dev_priv->sarea = r_list->map;
break;
}
}
if(!dev_priv->sarea) {
DRM_ERROR("could not find sarea!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->fb, init->fb_offset );
if(!dev_priv->fb) {
DRM_ERROR("could not find framebuffer!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->mmio, init->mmio_offset );
if(!dev_priv->mmio) {
DRM_ERROR("could not find mmio region!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->cce_ring, init->ring_offset );
if(!dev_priv->cce_ring) {
DRM_ERROR("could not find cce ring region!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->ring_rptr, init->ring_rptr_offset );
if(!dev_priv->ring_rptr) {
DRM_ERROR("could not find ring read pointer!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->buffers, init->buffers_offset );
if(!dev_priv->buffers) {
DRM_ERROR("could not find dma buffer region!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
if ( !dev_priv->is_pci ) {
DRM_FIND_MAP( dev_priv->agp_textures,
init->agp_textures_offset );
if(!dev_priv->agp_textures) {
DRM_ERROR("could not find agp texture region!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -EINVAL;
}
}
dev_priv->sarea_priv =
(drm_r128_sarea_t *)((u8 *)dev_priv->sarea->handle +
init->sarea_priv_offset);
if ( !dev_priv->is_pci ) {
DRM_IOREMAP( dev_priv->cce_ring );
DRM_IOREMAP( dev_priv->ring_rptr );
DRM_IOREMAP( dev_priv->buffers );
if(!dev_priv->cce_ring->handle ||
!dev_priv->ring_rptr->handle ||
!dev_priv->buffers->handle) {
DRM_ERROR("Could not ioremap agp regions!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -ENOMEM;
}
} else {
dev_priv->cce_ring->handle =
(void *)dev_priv->cce_ring->offset;
dev_priv->ring_rptr->handle =
(void *)dev_priv->ring_rptr->offset;
dev_priv->buffers->handle = (void *)dev_priv->buffers->offset;
}
#if __REALLY_HAVE_AGP
if ( !dev_priv->is_pci )
dev_priv->cce_buffers_offset = dev->agp->base;
else
#endif
dev_priv->cce_buffers_offset = dev->sg->handle;
dev_priv->ring.head = ((__volatile__ u32 *)
dev_priv->ring_rptr->handle);
dev_priv->ring.start = (u32 *)dev_priv->cce_ring->handle;
dev_priv->ring.end = ((u32 *)dev_priv->cce_ring->handle
+ init->ring_size / sizeof(u32));
dev_priv->ring.size = init->ring_size;
dev_priv->ring.size_l2qw = DRM(order)( init->ring_size / 8 );
dev_priv->ring.tail_mask =
(dev_priv->ring.size / sizeof(u32)) - 1;
dev_priv->ring.high_mark = 128;
dev_priv->sarea_priv->last_frame = 0;
R128_WRITE( R128_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame );
dev_priv->sarea_priv->last_dispatch = 0;
R128_WRITE( R128_LAST_DISPATCH_REG,
dev_priv->sarea_priv->last_dispatch );
if ( dev_priv->is_pci ) {
if (!DRM(ati_pcigart_init)( dev, &dev_priv->phys_pci_gart,
&dev_priv->bus_pci_gart) ) {
DRM_ERROR( "failed to init PCI GART!\n" );
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return -ENOMEM;
}
R128_WRITE( R128_PCI_GART_PAGE, dev_priv->bus_pci_gart );
}
r128_cce_init_ring_buffer( dev, dev_priv );
r128_cce_load_microcode( dev_priv );
dev->dev_private = (void *)dev_priv;
r128_do_engine_reset( dev );
return 0;
}
int r128_do_cleanup_cce( drm_device_t *dev )
{
if ( dev->dev_private ) {
drm_r128_private_t *dev_priv = dev->dev_private;
if ( !dev_priv->is_pci ) {
DRM_IOREMAPFREE( dev_priv->cce_ring );
DRM_IOREMAPFREE( dev_priv->ring_rptr );
DRM_IOREMAPFREE( dev_priv->buffers );
} else {
if (!DRM(ati_pcigart_cleanup)( dev,
dev_priv->phys_pci_gart,
dev_priv->bus_pci_gart ))
DRM_ERROR( "failed to cleanup PCI GART!\n" );
}
DRM(free)( dev->dev_private, sizeof(drm_r128_private_t),
DRM_MEM_DRIVER );
dev->dev_private = NULL;
}
return 0;
}
int r128_cce_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_r128_init_t init;
DRM_DEBUG( "%s\n", __FUNCTION__ );
if ( copy_from_user( &init, (drm_r128_init_t *)arg, sizeof(init) ) )
return -EFAULT;
switch ( init.func ) {
case R128_INIT_CCE:
return r128_do_init_cce( dev, &init );
case R128_CLEANUP_CCE:
return r128_do_cleanup_cce( dev );
}
return -EINVAL;
}
int r128_cce_start( 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_r128_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "%s\n", __FUNCTION__ );
LOCK_TEST_WITH_RETURN( dev );
if ( dev_priv->cce_running || dev_priv->cce_mode == R128_PM4_NONPM4 ) {
DRM_DEBUG( "%s while CCE running\n", __FUNCTION__ );
return 0;
}
r128_do_cce_start( dev_priv );
return 0;
}
/* Stop the CCE. The engine must have been idled before calling this
* routine.
*/
int r128_cce_stop( 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_r128_private_t *dev_priv = dev->dev_private;
drm_r128_cce_stop_t stop;
int ret;
DRM_DEBUG( "%s\n", __FUNCTION__ );
LOCK_TEST_WITH_RETURN( dev );
if ( copy_from_user( &stop, (drm_r128_init_t *)arg, sizeof(stop) ) )
return -EFAULT;
/* Flush any pending CCE commands. This ensures any outstanding
* commands are exectuted by the engine before we turn it off.
*/
if ( stop.flush ) {
r128_do_cce_flush( dev_priv );
}
/* If we fail to make the engine go idle, we return an error
* code so that the DRM ioctl wrapper can try again.
*/
if ( stop.idle ) {
ret = r128_do_cce_idle( dev_priv );
if ( ret < 0 ) return ret;
}
/* Finally, we can turn off the CCE. If the engine isn't idle,
* we will get some dropped triangles as they won't be fully
* rendered before the CCE is shut down.
*/
r128_do_cce_stop( dev_priv );
/* Reset the engine */
r128_do_engine_reset( dev );
return 0;
}
/* Just reset the CCE ring. Called as part of an X Server engine reset.
*/
int r128_cce_reset( 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_r128_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "%s\n", __FUNCTION__ );
LOCK_TEST_WITH_RETURN( dev );
if ( !dev_priv ) {
DRM_DEBUG( "%s called before init done\n", __FUNCTION__ );
return -EINVAL;
}
r128_do_cce_reset( dev_priv );
/* The CCE is no longer running after an engine reset */
dev_priv->cce_running = 0;
return 0;
}
int r128_cce_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_r128_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "%s\n", __FUNCTION__ );
LOCK_TEST_WITH_RETURN( dev );
if ( dev_priv->cce_running ) {
r128_do_cce_flush( dev_priv );
}
return r128_do_cce_idle( dev_priv );
}
int r128_engine_reset( 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_DEBUG( "%s\n", __FUNCTION__ );
LOCK_TEST_WITH_RETURN( dev );
return r128_do_engine_reset( dev );
}
/* ================================================================
* Fullscreen mode
*/
static int r128_do_init_pageflip( drm_device_t *dev )
{
drm_r128_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "%s\n", __FUNCTION__ );
dev_priv->crtc_offset = R128_READ( R128_CRTC_OFFSET );
dev_priv->crtc_offset_cntl = R128_READ( R128_CRTC_OFFSET_CNTL );
R128_WRITE( R128_CRTC_OFFSET, dev_priv->front_offset );
R128_WRITE( R128_CRTC_OFFSET_CNTL,
dev_priv->crtc_offset_cntl | R128_CRTC_OFFSET_FLIP_CNTL );
dev_priv->page_flipping = 1;
dev_priv->current_page = 0;
return 0;
}
int r128_do_cleanup_pageflip( drm_device_t *dev )
{
drm_r128_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "%s\n", __FUNCTION__ );
R128_WRITE( R128_CRTC_OFFSET, dev_priv->crtc_offset );
R128_WRITE( R128_CRTC_OFFSET_CNTL, dev_priv->crtc_offset_cntl );
dev_priv->page_flipping = 0;
dev_priv->current_page = 0;
return 0;
}
int r128_fullscreen( 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_r128_fullscreen_t fs;
LOCK_TEST_WITH_RETURN( dev );
if ( copy_from_user( &fs, (drm_r128_fullscreen_t *)arg, sizeof(fs) ) )
return -EFAULT;
switch ( fs.func ) {
case R128_INIT_FULLSCREEN:
return r128_do_init_pageflip( dev );
case R128_CLEANUP_FULLSCREEN:
return r128_do_cleanup_pageflip( dev );
}
return -EINVAL;
}
/* ================================================================
* Freelist management
*/
#define R128_BUFFER_USED 0xffffffff
#define R128_BUFFER_FREE 0
#if 0
static int r128_freelist_init( drm_device_t *dev )
{
drm_device_dma_t *dma = dev->dma;
drm_r128_private_t *dev_priv = dev->dev_private;
drm_buf_t *buf;
drm_r128_buf_priv_t *buf_priv;
drm_r128_freelist_t *entry;
int i;
dev_priv->head = DRM(alloc)( sizeof(drm_r128_freelist_t),
DRM_MEM_DRIVER );
if ( dev_priv->head == NULL )
return -ENOMEM;
memset( dev_priv->head, 0, sizeof(drm_r128_freelist_t) );
dev_priv->head->age = R128_BUFFER_USED;
for ( i = 0 ; i < dma->buf_count ; i++ ) {
buf = dma->buflist[i];
buf_priv = buf->dev_private;
entry = DRM(alloc)( sizeof(drm_r128_freelist_t),
DRM_MEM_DRIVER );
if ( !entry ) return -ENOMEM;
entry->age = R128_BUFFER_FREE;
entry->buf = buf;
entry->prev = dev_priv->head;
entry->next = dev_priv->head->next;
if ( !entry->next )
dev_priv->tail = entry;
buf_priv->discard = 0;
buf_priv->dispatched = 0;
buf_priv->list_entry = entry;
dev_priv->head->next = entry;
if ( dev_priv->head->next )
dev_priv->head->next->prev = entry;
}
return 0;
}
#endif
drm_buf_t *r128_freelist_get( drm_device_t *dev )
{
drm_device_dma_t *dma = dev->dma;
drm_r128_private_t *dev_priv = dev->dev_private;
drm_r128_buf_priv_t *buf_priv;
drm_buf_t *buf;
int i, t;
/* FIXME: Optimize -- use freelist code */
for ( i = 0 ; i < dma->buf_count ; i++ ) {
buf = dma->buflist[i];
buf_priv = buf->dev_private;
if ( buf->pid == 0 )
return buf;
}
for ( t = 0 ; t < dev_priv->usec_timeout ; t++ ) {
u32 done_age = R128_READ( R128_LAST_DISPATCH_REG );
for ( i = 0 ; i < dma->buf_count ; i++ ) {
buf = dma->buflist[i];
buf_priv = buf->dev_private;
if ( buf->pending && buf_priv->age <= done_age ) {
/* The buffer has been processed, so it
* can now be used.
*/
buf->pending = 0;
return buf;
}
}
udelay( 1 );
}
DRM_ERROR( "returning NULL!\n" );
return NULL;
}
void r128_freelist_reset( drm_device_t *dev )
{
drm_device_dma_t *dma = dev->dma;
int i;
for ( i = 0 ; i < dma->buf_count ; i++ ) {
drm_buf_t *buf = dma->buflist[i];
drm_r128_buf_priv_t *buf_priv = buf->dev_private;
buf_priv->age = 0;
}
}
/* ================================================================
* CCE command submission
*/
int r128_wait_ring( drm_r128_private_t *dev_priv, int n )
{
drm_r128_ring_buffer_t *ring = &dev_priv->ring;
int i;
for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
r128_update_ring_snapshot( ring );
if ( ring->space >= n )
return 0;
udelay( 1 );
}
/* FIXME: This is being ignored... */
DRM_ERROR( "failed!\n" );
return -EBUSY;
}
static int r128_cce_get_buffers( drm_device_t *dev, drm_dma_t *d )
{
int i;
drm_buf_t *buf;
for ( i = d->granted_count ; i < d->request_count ; i++ ) {
buf = r128_freelist_get( dev );
if ( !buf ) return -EAGAIN;
buf->pid = current->pid;
if ( copy_to_user( &d->request_indices[i], &buf->idx,
sizeof(buf->idx) ) )
return -EFAULT;
if ( copy_to_user( &d->request_sizes[i], &buf->total,
sizeof(buf->total) ) )
return -EFAULT;
d->granted_count++;
}
return 0;
}
int r128_cce_buffers( 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 ret = 0;
drm_dma_t d;
LOCK_TEST_WITH_RETURN( dev );
if ( copy_from_user( &d, (drm_dma_t *) arg, sizeof(d) ) )
return -EFAULT;
/* Please don't send us buffers.
*/
if ( d.send_count != 0 ) {
DRM_ERROR( "Process %d trying to send %d buffers via drmDMA\n",
current->pid, d.send_count );
return -EINVAL;
}
/* We'll send you buffers.
*/
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;
}
d.granted_count = 0;
if ( d.request_count ) {
ret = r128_cce_get_buffers( dev, &d );
}
if ( copy_to_user( (drm_dma_t *) arg, &d, sizeof(d) ) )
return -EFAULT;
return ret;
}
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