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linux/drivers/char/drm/r128_cce.c
Dave Airlie d1f2b55ad2 drm: updated DRM map patch for 32/64 bit systems 
I basically combined Paul's patches with additions that I had made
for PCI scatter gather.
I also tried more carefully to avoid problems with the same token
assigned multiple times while trying to use the base address in the
token if possible to gain as much backward compatibility as possible
for broken DRI clients.

From: Paul Mackerras <paulus@samba.org> and Egbert Eich <eich@suse.de>
Signed-off-by: Dave Airlie <airlied@linux.ie>
2005-08-05 22:11:22 +10:00

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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>
*/
#include "drmP.h"
#include "drm.h"
#include "r128_drm.h"
#include "r128_drv.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
};
static 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;
}
DRM_UDELAY( 1 );
}
#if R128_FIFO_DEBUG
DRM_ERROR( "failed!\n" );
#endif
return DRM_ERR(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;
DRM_UDELAY( 1 );
}
#if R128_FIFO_DEBUG
DRM_ERROR( "failed!\n" );
#endif
return DRM_ERR(EBUSY);
}
static 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 ) 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;
}
DRM_UDELAY( 1 );
}
#if R128_FIFO_DEBUG
DRM_ERROR( "failed!\n" );
#endif
return DRM_ERR(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( "\n" );
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 ) == 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 );
}
}
DRM_UDELAY( 1 );
}
#if R128_FIFO_DEBUG
DRM_ERROR( "failed!\n" );
r128_status( dev_priv );
#endif
return DRM_ERR(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_PM4_BUFFER_CNTL_NOUPDATE );
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 );
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 | R128_PM4_BUFFER_CNTL_NOUPDATE );
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( "\n" );
/* The manual (p. 2) says this address is in "VM space". This
* means it's an offset from the start of AGP space.
*/
#if __OS_HAS_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 -
(unsigned long)dev->sg->virtual;
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 );
/* 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;
DRM_DEBUG( "\n" );
dev_priv = drm_alloc( sizeof(drm_r128_private_t), DRM_MEM_DRIVER );
if ( dev_priv == NULL )
return DRM_ERR(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 DRM_ERR(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 DRM_ERR(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 DRM_ERR(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));
DRM_GETSAREA();
if(!dev_priv->sarea) {
DRM_ERROR("could not find sarea!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return DRM_ERR(EINVAL);
}
dev_priv->mmio = drm_core_findmap(dev, 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 DRM_ERR(EINVAL);
}
dev_priv->cce_ring = drm_core_findmap(dev, 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 DRM_ERR(EINVAL);
}
dev_priv->ring_rptr = drm_core_findmap(dev, 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 DRM_ERR(EINVAL);
}
dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if(!dev->agp_buffer_map) {
DRM_ERROR("could not find dma buffer region!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return DRM_ERR(EINVAL);
}
if ( !dev_priv->is_pci ) {
dev_priv->agp_textures = drm_core_findmap(dev, 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 DRM_ERR(EINVAL);
}
}
dev_priv->sarea_priv =
(drm_r128_sarea_t *)((u8 *)dev_priv->sarea->handle +
init->sarea_priv_offset);
#if __OS_HAS_AGP
if ( !dev_priv->is_pci ) {
drm_core_ioremap( dev_priv->cce_ring, dev );
drm_core_ioremap( dev_priv->ring_rptr, dev );
drm_core_ioremap( dev->agp_buffer_map, dev );
if(!dev_priv->cce_ring->handle ||
!dev_priv->ring_rptr->handle ||
!dev->agp_buffer_map->handle) {
DRM_ERROR("Could not ioremap agp regions!\n");
dev->dev_private = (void *)dev_priv;
r128_do_cleanup_cce( dev );
return DRM_ERR(ENOMEM);
}
} else
#endif
{
dev_priv->cce_ring->handle =
(void *)dev_priv->cce_ring->offset;
dev_priv->ring_rptr->handle =
(void *)dev_priv->ring_rptr->offset;
dev->agp_buffer_map->handle = (void *)dev->agp_buffer_map->offset;
}
#if __OS_HAS_AGP
if ( !dev_priv->is_pci )
dev_priv->cce_buffers_offset = dev->agp->base;
else
#endif
dev_priv->cce_buffers_offset = (unsigned long)dev->sg->virtual;
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 __OS_HAS_AGP
if ( dev_priv->is_pci ) {
#endif
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 DRM_ERR(ENOMEM);
}
R128_WRITE( R128_PCI_GART_PAGE, dev_priv->bus_pci_gart );
#if __OS_HAS_AGP
}
#endif
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 )
{
/* Make sure interrupts are disabled here because the uninstall ioctl
* may not have been called from userspace and after dev_private
* is freed, it's too late.
*/
if ( dev->irq_enabled ) drm_irq_uninstall(dev);
if ( dev->dev_private ) {
drm_r128_private_t *dev_priv = dev->dev_private;
#if __OS_HAS_AGP
if ( !dev_priv->is_pci ) {
if ( dev_priv->cce_ring != NULL )
drm_core_ioremapfree( dev_priv->cce_ring, dev );
if ( dev_priv->ring_rptr != NULL )
drm_core_ioremapfree( dev_priv->ring_rptr, dev );
if ( dev->agp_buffer_map != NULL )
drm_core_ioremapfree( dev->agp_buffer_map, dev );
} else
#endif
{
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( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
drm_r128_init_t init;
DRM_DEBUG( "\n" );
LOCK_TEST_WITH_RETURN( dev, filp );
DRM_COPY_FROM_USER_IOCTL( init, (drm_r128_init_t __user *)data, sizeof(init) );
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 DRM_ERR(EINVAL);
}
int r128_cce_start( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
drm_r128_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "\n" );
LOCK_TEST_WITH_RETURN( dev, filp );
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( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
drm_r128_private_t *dev_priv = dev->dev_private;
drm_r128_cce_stop_t stop;
int ret;
DRM_DEBUG( "\n" );
LOCK_TEST_WITH_RETURN( dev, filp );
DRM_COPY_FROM_USER_IOCTL(stop, (drm_r128_cce_stop_t __user *)data, sizeof(stop) );
/* 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 ) 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( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
drm_r128_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "\n" );
LOCK_TEST_WITH_RETURN( dev, filp );
if ( !dev_priv ) {
DRM_DEBUG( "%s called before init done\n", __FUNCTION__ );
return DRM_ERR(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( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
drm_r128_private_t *dev_priv = dev->dev_private;
DRM_DEBUG( "\n" );
LOCK_TEST_WITH_RETURN( dev, filp );
if ( dev_priv->cce_running ) {
r128_do_cce_flush( dev_priv );
}
return r128_do_cce_idle( dev_priv );
}
int r128_engine_reset( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
DRM_DEBUG( "\n" );
LOCK_TEST_WITH_RETURN( dev, filp );
return r128_do_engine_reset( dev );
}
int r128_fullscreen( DRM_IOCTL_ARGS )
{
return DRM_ERR(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 DRM_ERR(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 DRM_ERR(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
static 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->filp == 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;
}
}
DRM_UDELAY( 1 );
}
DRM_DEBUG( "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( dev_priv );
if ( ring->space >= n )
return 0;
DRM_UDELAY( 1 );
}
/* FIXME: This is being ignored... */
DRM_ERROR( "failed!\n" );
return DRM_ERR(EBUSY);
}
static int r128_cce_get_buffers( DRMFILE filp, 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 DRM_ERR(EAGAIN);
buf->filp = filp;
if ( DRM_COPY_TO_USER( &d->request_indices[i], &buf->idx,
sizeof(buf->idx) ) )
return DRM_ERR(EFAULT);
if ( DRM_COPY_TO_USER( &d->request_sizes[i], &buf->total,
sizeof(buf->total) ) )
return DRM_ERR(EFAULT);
d->granted_count++;
}
return 0;
}
int r128_cce_buffers( DRM_IOCTL_ARGS )
{
DRM_DEVICE;
drm_device_dma_t *dma = dev->dma;
int ret = 0;
drm_dma_t __user *argp = (void __user *)data;
drm_dma_t d;
LOCK_TEST_WITH_RETURN( dev, filp );
DRM_COPY_FROM_USER_IOCTL( d, argp, sizeof(d) );
/* Please don't send us buffers.
*/
if ( d.send_count != 0 ) {
DRM_ERROR( "Process %d trying to send %d buffers via drmDMA\n",
DRM_CURRENTPID, d.send_count );
return DRM_ERR(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",
DRM_CURRENTPID, d.request_count, dma->buf_count );
return DRM_ERR(EINVAL);
}
d.granted_count = 0;
if ( d.request_count ) {
ret = r128_cce_get_buffers( filp, dev, &d );
}
DRM_COPY_TO_USER_IOCTL(argp, d, sizeof(d) );
return ret;
}
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