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-rw-r--r--linux/r128_cce.c970
1 files changed, 970 insertions, 0 deletions
diff --git a/linux/r128_cce.c b/linux/r128_cce.c
new file mode 100644
index 00000000..6df2b45a
--- /dev/null
+++ b/linux/r128_cce.c
@@ -0,0 +1,970 @@
+/* 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>
+
+#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
+};
+
+
+#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)
+
+
+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 );
+ }
+
+ 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 < 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 );
+ }
+
+ 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 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 );
+ *dev_priv->ring.head = 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 = 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;
+
+ /* 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_IOREMAP( dev_priv->cce_ring );
+ DO_IOREMAP( dev_priv->ring_rptr );
+ DO_IOREMAP( dev_priv->buffers );
+#if 0
+ if ( !dev_priv->is_pci ) {
+ DO_IOREMAP( 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_IOREMAPFREE( dev_priv->cce_ring );
+ DO_IOREMAPFREE( dev_priv->ring_rptr );
+ DO_IOREMAPFREE( dev_priv->buffers );
+#if 0
+ if ( !dev_priv->is_pci ) {
+ DO_IOREMAPFREE( 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( "%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;
+ }
+ 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__ );
+
+ 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;
+ }
+
+ 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__ );
+
+ 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;
+ }
+ 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__ );
+
+ 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;
+ }
+
+ 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__ );
+
+ 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 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;
+
+ 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;
+ }
+
+ 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++ ) {
+ ring->space = *ring->head - ring->tail;
+ if ( ring->space <= 0 )
+ ring->space += ring->size;
+
+ if ( ring->space >= n )
+ return 0;
+
+ udelay( 1 );
+ }
+
+ /* FIXME: This is being ignored... */
+ DRM_ERROR( "failed!\n" );
+ 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;
+}
+
+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 held\n", __FUNCTION__ );
+ return -EINVAL;
+ }
+
+ /* 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 13:29:09 +0000