r128_cce.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:34k
- /* 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 "drmP.h"
- #include "r128_drv.h"
- #include <linux/interrupt.h> /* For task queue support */
- #include <linux/delay.h>
- /* FIXME: Temporary CCE packet buffer */
- u32 r128_cce_buffer[(1 << 14)] __attribute__ ((aligned (32)));
- /* 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
- };
- #define DO_REMAP(_m) (_m)->handle = drm_ioremap((_m)->offset, (_m)->size)
- #define DO_REMAPFREE(_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)
- 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 0
- static void r128_status( drm_r128_private_t *dev_priv )
- {
- printk( "GUI_STAT = 0x%08xn",
- (unsigned int)R128_READ( R128_GUI_STAT ) );
- printk( "PM4_STAT = 0x%08xn",
- (unsigned int)R128_READ( R128_PM4_STAT ) );
- printk( "PM4_BUFFER_DL_WPTR = 0x%08xn",
- (unsigned int)R128_READ( R128_PM4_BUFFER_DL_WPTR ) );
- printk( "PM4_BUFFER_DL_RPTR = 0x%08xn",
- (unsigned int)R128_READ( R128_PM4_BUFFER_DL_RPTR ) );
- printk( "PM4_MICRO_CNTL = 0x%08xn",
- (unsigned int)R128_READ( R128_PM4_MICRO_CNTL ) );
- printk( "PM4_BUFFER_CNTL = 0x%08xn",
- (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 );
- }
- DRM_ERROR( "%s failed!n", __FUNCTION__ );
- 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 );
- }
- DRM_ERROR( "%s failed!n", __FUNCTION__ );
- return -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;
- }
- udelay( 1 );
- }
- DRM_ERROR( "%s failed!n", __FUNCTION__ );
- 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;
- 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.
- */
- static int r128_do_cce_idle( drm_r128_private_t *dev_priv )
- {
- int i;
- for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
- if ( *dev_priv->ring.head == 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 0
- 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
- * commangs, 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.head = 0;
- dev_priv->ring.tail = 0;
- }
- /* Stop the Concurrent Command Engine. This will not flush any pending
- * commangs, 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 = dev->dev_private;
- u32 ring_start;
- u32 tmp;
- /* The manual (p. 2) says this address is in "VM space". This
- * means it's an offset from the start of AGP space.
- */
- ring_start = dev_priv->cce_ring->offset - dev->agp->base;
- 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. */
- *dev_priv->ring.head = 0;
- R128_WRITE( R128_PM4_BUFFER_DL_RPTR_ADDR,
- dev_priv->ring_rptr->offset );
- /* 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;
- int i;
- dev_priv = drm_alloc( sizeof(drm_r128_private_t), DRM_MEM_DRIVER );
- if ( dev_priv == NULL )
- return -ENOMEM;
- dev->dev_private = (void *)dev_priv;
- memset( dev_priv, 0, sizeof(drm_r128_private_t) );
- dev_priv->is_pci = init->is_pci;
- /* GH: We don't support PCI cards until PCI GART is implemented.
- * Fail here so we can remove all checks for PCI cards around
- * the CCE ring code.
- */
- if ( dev_priv->is_pci ) {
- drm_free( dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER );
- dev->dev_private = NULL;
- return -EINVAL;
- }
- dev_priv->usec_timeout = init->usec_timeout;
- if ( dev_priv->usec_timeout < 1 ||
- dev_priv->usec_timeout > R128_MAX_USEC_TIMEOUT ) {
- drm_free( dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER );
- dev->dev_private = NULL;
- return -EINVAL;
- }
- dev_priv->cce_mode = init->cce_mode;
- dev_priv->cce_secure = init->cce_secure;
- /* 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_free( dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER );
- dev->dev_private = NULL;
- 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;
- }
- 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->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));
- /* FIXME: We want multiple shared areas, including one shared
- * only by the X Server and kernel module.
- */
- for ( i = 0 ; i < dev->map_count ; i++ ) {
- if ( dev->maplist[i]->type == _DRM_SHM ) {
- dev_priv->sarea = dev->maplist[i];
- break;
- }
- }
- DO_FIND_MAP( dev_priv->fb, init->fb_offset );
- DO_FIND_MAP( dev_priv->mmio, init->mmio_offset );
- DO_FIND_MAP( dev_priv->cce_ring, init->ring_offset );
- DO_FIND_MAP( dev_priv->ring_rptr, init->ring_rptr_offset );
- DO_FIND_MAP( dev_priv->buffers, init->buffers_offset );
- if ( !dev_priv->is_pci ) {
- DO_FIND_MAP( dev_priv->agp_textures,
- init->agp_textures_offset );
- }
- dev_priv->sarea_priv =
- (drm_r128_sarea_t *)((u8 *)dev_priv->sarea->handle +
- init->sarea_priv_offset);
- DO_REMAP( dev_priv->cce_ring );
- DO_REMAP( dev_priv->ring_rptr );
- DO_REMAP( dev_priv->buffers );
- #if 0
- if ( !dev_priv->is_pci ) {
- DO_REMAP( dev_priv->agp_textures );
- }
- #endif
- 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->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 );
- r128_cce_init_ring_buffer( dev );
- r128_cce_load_microcode( dev_priv );
- r128_do_engine_reset( dev );
- return 0;
- }
- static int r128_do_cleanup_cce( drm_device_t *dev )
- {
- if ( dev->dev_private ) {
- drm_r128_private_t *dev_priv = dev->dev_private;
- DO_REMAPFREE( dev_priv->cce_ring );
- DO_REMAPFREE( dev_priv->ring_rptr );
- DO_REMAPFREE( dev_priv->buffers );
- #if 0
- if ( !dev_priv->is_pci ) {
- DO_REMAPFREE( dev_priv->agp_textures );
- }
- #endif
- 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;
- 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( "%sn", __FUNCTION__ );
- if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
- dev->lock.pid != current->pid ) {
- DRM_ERROR( "%s called without lock heldn", __FUNCTION__ );
- return -EINVAL;
- }
- if ( dev_priv->cce_running || dev_priv->cce_mode == R128_PM4_NONPM4 ) {
- DRM_DEBUG( "%s while CCE runningn", __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( "%sn", __FUNCTION__ );
- if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
- dev->lock.pid != current->pid ) {
- DRM_ERROR( "%s called without lock heldn", __FUNCTION__ );
- return -EINVAL;
- }
- 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( "%sn", __FUNCTION__ );
- if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
- dev->lock.pid != current->pid ) {
- DRM_ERROR( "%s called without lock heldn", __FUNCTION__ );
- return -EINVAL;
- }
- if ( !dev_priv ) {
- DRM_DEBUG( "%s called before init donen", __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( "%sn", __FUNCTION__ );
- if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
- dev->lock.pid != current->pid ) {
- DRM_ERROR( "%s called without lock heldn", __FUNCTION__ );
- return -EINVAL;
- }
- 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( "%sn", __FUNCTION__ );
- if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
- dev->lock.pid != current->pid ) {
- DRM_ERROR( "%s called without lock heldn", __FUNCTION__ );
- return -EINVAL;
- }
- return r128_do_engine_reset( dev );
- }
- /* ================================================================
- * 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 packet 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++ ) {
- ring->space = *ring->head - ring->tail;
- if ( ring->space <= 0 )
- ring->space += ring->size;
- if ( ring->space >= n )
- return 0;
- udelay( 1 );
- }
- return -EBUSY;
- }
- void r128_update_ring_snapshot( drm_r128_private_t *dev_priv )
- {
- drm_r128_ring_buffer_t *ring = &dev_priv->ring;
- ring->space = *ring->head - ring->tail;
- #if R128_PERFORMANCE_BOXES
- if ( ring->space == 0 )
- atomic_inc( &dev_priv->idle_count );
- #endif
- if ( ring->space <= 0 )
- ring->space += ring->size;
- }
- #if 0
- static int r128_verify_command( drm_r128_private_t *dev_priv,
- u32 cmd, int *size )
- {
- int writing = 1;
- *size = 0;
- switch ( cmd & R128_CCE_PACKET_MASK ) {
- case R128_CCE_PACKET0:
- if ( (cmd & R128_CCE_PACKET0_REG_MASK) <= (0x1004 >> 2) &&
- (cmd & R128_CCE_PACKET0_REG_MASK) !=
- (R128_PM4_VC_FPU_SETUP >> 2) ) {
- writing = 0;
- }
- *size = ((cmd & R128_CCE_PACKET_COUNT_MASK) >> 16) + 2;
- break;
- case R128_CCE_PACKET1:
- if ( (cmd & R128_CCE_PACKET1_REG0_MASK) <= (0x1004 >> 2) &&
- (cmd & R128_CCE_PACKET1_REG0_MASK) !=
- (R128_PM4_VC_FPU_SETUP >> 2) ) {
- writing = 0;
- }
- if ( (cmd & R128_CCE_PACKET1_REG1_MASK) <= (0x1004 << 9) &&
- (cmd & R128_CCE_PACKET1_REG1_MASK) !=
- (R128_PM4_VC_FPU_SETUP << 9) ) {
- writing = 0;
- }
- *size = 3;
- break;
- case R128_CCE_PACKET2:
- break;
- case R128_CCE_PACKET3:
- *size = ((cmd & R128_CCE_PACKET_COUNT_MASK) >> 16) + 2;
- break;
- }
- return writing;
- }
- static int r128_submit_packet_ring_secure( drm_r128_private_t *dev_priv,
- u32 *commands, int *count )
- {
- #if 0
- int write = dev_priv->sarea_priv->ring_write;
- int *write_ptr = dev_priv->ring_start + write;
- int c = *count;
- u32 tmp = 0;
- int psize = 0;
- int writing = 1;
- int timeout;
- while ( c > 0 ) {
- tmp = *commands++;
- if ( !psize ) {
- writing = r128_verify_command( dev_priv, tmp, &psize );
- }
- psize--;
- if ( writing ) {
- write++;
- *write_ptr++ = tmp;
- }
- if ( write >= dev_priv->ring_entries ) {
- write = 0;
- write_ptr = dev_priv->ring_start;
- }
- timeout = 0;
- while ( write == *dev_priv->ring_read_ptr ) {
- R128_READ( R128_PM4_BUFFER_DL_RPTR );
- if ( timeout++ >= dev_priv->usec_timeout )
- return -EBUSY;
- udelay( 1 );
- }
- c--;
- }
- if ( write < 32 ) {
- memcpy( dev_priv->ring_end,
- dev_priv->ring_start,
- write * sizeof(u32) );
- }
- /* Make sure WC cache has been flushed */
- r128_flush_write_combine();
- dev_priv->sarea_priv->ring_write = write;
- R128_WRITE( R128_PM4_BUFFER_DL_WPTR, write );
- *count = 0;
- #endif
- return 0;
- }
- static int r128_submit_packet_ring_insecure( drm_r128_private_t *dev_priv,
- u32 *commands, int *count )
- {
- #if 0
- int write = dev_priv->sarea_priv->ring_write;
- int *write_ptr = dev_priv->ring_start + write;
- int c = *count;
- int timeout;
- while ( c > 0 ) {
- write++;
- *write_ptr++ = *commands++;
- if ( write >= dev_priv->ring_entries ) {
- write = 0;
- write_ptr = dev_priv->ring_start;
- }
- timeout = 0;
- while ( write == *dev_priv->ring_read_ptr ) {
- R128_READ( R128_PM4_BUFFER_DL_RPTR );
- if ( timeout++ >= dev_priv->usec_timeout )
- return -EBUSY;
- udelay( 1 );
- }
- c--;
- }
- if ( write < 32 ) {
- memcpy( dev_priv->ring_end,
- dev_priv->ring_start,
- write * sizeof(u32) );
- }
- /* Make sure WC cache has been flushed */
- r128_flush_write_combine();
- dev_priv->sarea_priv->ring_write = write;
- R128_WRITE( R128_PM4_BUFFER_DL_WPTR, write );
- *count = 0;
- #endif
- return 0;
- }
- #endif
- /* Internal packet submission routine. This uses the insecure versions
- * of the packet submission functions, and thus should only be used for
- * packets generated inside the kernel module.
- */
- int r128_do_submit_packet( drm_r128_private_t *dev_priv,
- u32 *buffer, int count )
- {
- int c = count;
- int ret = 0;
- #if 0
- int left = 0;
- if ( c >= dev_priv->ring_entries ) {
- c = dev_priv->ring_entries - 1;
- left = count - c;
- }
- /* Since this is only used by the kernel we can use the
- * insecure ring buffer submit packet routine.
- */
- ret = r128_submit_packet_ring_insecure( dev_priv, buffer, &c );
- c += left;
- #endif
- return ( ret < 0 ) ? ret : c;
- }
- /* External packet submission routine. This uses the secure versions
- * by default, and can thus submit packets received from user space.
- */
- int r128_cce_packet( 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_packet_t packet;
- u32 *buffer;
- int c;
- int size;
- int ret = 0;
- #if 0
- /* GH: Disable packet submission for now.
- */
- return -EINVAL;
- #endif
- if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
- dev->lock.pid != current->pid ) {
- DRM_ERROR( "r128_submit_packet called without lock heldn" );
- return -EINVAL;
- }
- if ( copy_from_user( &packet, (drm_r128_packet_t *)arg,
- sizeof(packet) ) )
- return -EFAULT;
- #if 0
- c = packet.count;
- size = c * sizeof(*buffer);
- {
- int left = 0;
- if ( c >= dev_priv->ring_entries ) {
- c = dev_priv->ring_entries - 1;
- size = c * sizeof(*buffer);
- left = packet.count - c;
- }
- buffer = kmalloc( size, 0 );
- if ( buffer == NULL)
- return -ENOMEM;
- if ( copy_from_user( buffer, packet.buffer, size ) )
- return -EFAULT;
- if ( dev_priv->cce_secure ) {
- ret = r128_submit_packet_ring_secure( dev_priv,
- buffer, &c );
- } else {
- ret = r128_submit_packet_ring_insecure( dev_priv,
- buffer, &c );
- }
- c += left;
- }
- kfree( buffer );
- #else
- c = 0;
- #endif
- packet.count = c;
- if ( copy_to_user( (drm_r128_packet_t *)arg, &packet,
- sizeof(packet) ) )
- return -EFAULT;
- if ( ret ) {
- return ret;
- } else if ( c > 0 ) {
- return -EAGAIN;
- }
- return 0;
- }
- #if 0
- static int r128_send_vertbufs( drm_device_t *dev, drm_r128_vertex_t *v )
- {
- 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, ret;
- RING_LOCALS;
- /* Make sure we have valid data */
- for (i = 0; i < v->send_count; i++) {
- int idx = v->send_indices[i];
- if (idx < 0 || idx >= dma->buf_count) {
- DRM_ERROR("Index %d (of %d max)n",
- idx, dma->buf_count - 1);
- return -EINVAL;
- }
- buf = dma->buflist[idx];
- if (buf->pid != current->pid) {
- DRM_ERROR("Process %d using buffer owned by %dn",
- current->pid, buf->pid);
- return -EINVAL;
- }
- if (buf->pending) {
- DRM_ERROR("Sending pending buffer:"
- " buffer %d, offset %dn",
- v->send_indices[i], i);
- return -EINVAL;
- }
- }
- /* Wait for idle, if we've wrapped to make sure that all pending
- buffers have been processed */
- if (dev_priv->submit_age == R128_MAX_VBUF_AGE) {
- if ((ret = r128_do_cce_idle(dev)) < 0) return ret;
- dev_priv->submit_age = 0;
- r128_freelist_reset(dev);
- }
- /* Make sure WC cache has been flushed (if in PIO mode) */
- if (!dev_priv->cce_is_bm_mode) r128_flush_write_combine();
- /* FIXME: Add support for sending vertex buffer to the CCE here
- instead of in client code. The v->prim holds the primitive
- type that should be drawn. Loop over the list buffers in
- send_indices[] and submit a packet for each VB.
- This will require us to loop over the clip rects here as
- well, which implies that we extend the kernel driver to allow
- cliprects to be stored here. Note that the cliprects could
- possibly come from the X server instead of the client, but
- this will require additional changes to the DRI to allow for
- this optimization. */
- /* Submit a CCE packet that writes submit_age to R128_VB_AGE_REG */
- #if 0
- cce_buffer[0] = R128CCE0(R128_CCE_PACKET0, R128_VB_AGE_REG, 0);
- cce_buffer[1] = dev_priv->submit_age;
- if ((ret = r128_do_submit_packet(dev, cce_buffer, 2)) < 0) {
- /* Until we add support for sending VBs to the CCE in
- this routine, we can recover from this error. After
- we add that support, we won't be able to easily
- recover, so we will probably have to implement
- another mechanism for handling timeouts from packets
- submitted directly by the kernel. */
- return ret;
- }
- #else
- BEGIN_RING( 2 );
- OUT_RING( CCE_PACKET0( R128_VB_AGE_REG, 0 ) );
- OUT_RING( dev_priv->submit_age );
- ADVANCE_RING();
- #endif
- /* Now that the submit packet request has succeeded, we can mark
- the buffers as pending */
- for (i = 0; i < v->send_count; i++) {
- buf = dma->buflist[v->send_indices[i]];
- buf->pending = 1;
- buf_priv = buf->dev_private;
- buf_priv->age = dev_priv->submit_age;
- }
- dev_priv->submit_age++;
- return 0;
- }
- #endif
- 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;
- if ( copy_from_user( &d, (drm_dma_t *) arg, sizeof(d) ) )
- return -EFAULT;
- if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
- dev->lock.pid != current->pid ) {
- DRM_ERROR( "%s called without lock heldn", __FUNCTION__ );
- return -EINVAL;
- }
- /* Please don't send us buffers.
- */
- if ( d.send_count != 0 ) {
- DRM_ERROR( "Process %d trying to send %d buffers via drmDMAn",
- 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;
- }