patch-2.4.18 linux/drivers/char/drm-4.0/radeon_cp.c
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- Lines: 1315
- Date:
Wed Jan 9 21:56:59 2002
- Orig file:
linux.orig/drivers/char/drm-4.0/radeon_cp.c
- Orig date:
Thu Jan 1 00:00:00 1970
diff -Naur -X /home/marcelo/lib/dontdiff linux.orig/drivers/char/drm-4.0/radeon_cp.c linux/drivers/char/drm-4.0/radeon_cp.c
@@ -0,0 +1,1314 @@
+/* radeon_cp.c -- CP support for Radeon -*- linux-c -*-
+ *
+ * Copyright 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Fremont, 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:
+ * Kevin E. Martin <martin@valinux.com>
+ * Gareth Hughes <gareth@valinux.com>
+ *
+ */
+
+#define __NO_VERSION__
+#include "drmP.h"
+#include "radeon_drv.h"
+
+#include <linux/interrupt.h> /* For task queue support */
+#include <linux/delay.h>
+
+#define RADEON_FIFO_DEBUG 0
+
+
+/* CP microcode (from ATI) */
+static u32 radeon_cp_microcode[][2] = {
+ { 0x21007000, 0000000000 },
+ { 0x20007000, 0000000000 },
+ { 0x000000b4, 0x00000004 },
+ { 0x000000b8, 0x00000004 },
+ { 0x6f5b4d4c, 0000000000 },
+ { 0x4c4c427f, 0000000000 },
+ { 0x5b568a92, 0000000000 },
+ { 0x4ca09c6d, 0000000000 },
+ { 0xad4c4c4c, 0000000000 },
+ { 0x4ce1af3d, 0000000000 },
+ { 0xd8afafaf, 0000000000 },
+ { 0xd64c4cdc, 0000000000 },
+ { 0x4cd10d10, 0000000000 },
+ { 0x000f0000, 0x00000016 },
+ { 0x362f242d, 0000000000 },
+ { 0x00000012, 0x00000004 },
+ { 0x000f0000, 0x00000016 },
+ { 0x362f282d, 0000000000 },
+ { 0x000380e7, 0x00000002 },
+ { 0x04002c97, 0x00000002 },
+ { 0x000f0001, 0x00000016 },
+ { 0x333a3730, 0000000000 },
+ { 0x000077ef, 0x00000002 },
+ { 0x00061000, 0x00000002 },
+ { 0x00000021, 0x0000001a },
+ { 0x00004000, 0x0000001e },
+ { 0x00061000, 0x00000002 },
+ { 0x00000021, 0x0000001a },
+ { 0x00004000, 0x0000001e },
+ { 0x00061000, 0x00000002 },
+ { 0x00000021, 0x0000001a },
+ { 0x00004000, 0x0000001e },
+ { 0x00000017, 0x00000004 },
+ { 0x0003802b, 0x00000002 },
+ { 0x040067e0, 0x00000002 },
+ { 0x00000017, 0x00000004 },
+ { 0x000077e0, 0x00000002 },
+ { 0x00065000, 0x00000002 },
+ { 0x000037e1, 0x00000002 },
+ { 0x040067e1, 0x00000006 },
+ { 0x000077e0, 0x00000002 },
+ { 0x000077e1, 0x00000002 },
+ { 0x000077e1, 0x00000006 },
+ { 0xffffffff, 0000000000 },
+ { 0x10000000, 0000000000 },
+ { 0x0003802b, 0x00000002 },
+ { 0x040067e0, 0x00000006 },
+ { 0x00007675, 0x00000002 },
+ { 0x00007676, 0x00000002 },
+ { 0x00007677, 0x00000002 },
+ { 0x00007678, 0x00000006 },
+ { 0x0003802c, 0x00000002 },
+ { 0x04002676, 0x00000002 },
+ { 0x00007677, 0x00000002 },
+ { 0x00007678, 0x00000006 },
+ { 0x0000002f, 0x00000018 },
+ { 0x0000002f, 0x00000018 },
+ { 0000000000, 0x00000006 },
+ { 0x00000030, 0x00000018 },
+ { 0x00000030, 0x00000018 },
+ { 0000000000, 0x00000006 },
+ { 0x01605000, 0x00000002 },
+ { 0x00065000, 0x00000002 },
+ { 0x00098000, 0x00000002 },
+ { 0x00061000, 0x00000002 },
+ { 0x64c0603e, 0x00000004 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x00080000, 0x00000016 },
+ { 0000000000, 0000000000 },
+ { 0x0400251d, 0x00000002 },
+ { 0x00007580, 0x00000002 },
+ { 0x00067581, 0x00000002 },
+ { 0x04002580, 0x00000002 },
+ { 0x00067581, 0x00000002 },
+ { 0x00000049, 0x00000004 },
+ { 0x00005000, 0000000000 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x00061000, 0x00000002 },
+ { 0x0000750e, 0x00000002 },
+ { 0x00019000, 0x00000002 },
+ { 0x00011055, 0x00000014 },
+ { 0x00000055, 0x00000012 },
+ { 0x0400250f, 0x00000002 },
+ { 0x0000504f, 0x00000004 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x00007565, 0x00000002 },
+ { 0x00007566, 0x00000002 },
+ { 0x00000058, 0x00000004 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x01e655b4, 0x00000002 },
+ { 0x4401b0e4, 0x00000002 },
+ { 0x01c110e4, 0x00000002 },
+ { 0x26667066, 0x00000018 },
+ { 0x040c2565, 0x00000002 },
+ { 0x00000066, 0x00000018 },
+ { 0x04002564, 0x00000002 },
+ { 0x00007566, 0x00000002 },
+ { 0x0000005d, 0x00000004 },
+ { 0x00401069, 0x00000008 },
+ { 0x00101000, 0x00000002 },
+ { 0x000d80ff, 0x00000002 },
+ { 0x0080006c, 0x00000008 },
+ { 0x000f9000, 0x00000002 },
+ { 0x000e00ff, 0x00000002 },
+ { 0000000000, 0x00000006 },
+ { 0x0000008f, 0x00000018 },
+ { 0x0000005b, 0x00000004 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x00007576, 0x00000002 },
+ { 0x00065000, 0x00000002 },
+ { 0x00009000, 0x00000002 },
+ { 0x00041000, 0x00000002 },
+ { 0x0c00350e, 0x00000002 },
+ { 0x00049000, 0x00000002 },
+ { 0x00051000, 0x00000002 },
+ { 0x01e785f8, 0x00000002 },
+ { 0x00200000, 0x00000002 },
+ { 0x0060007e, 0x0000000c },
+ { 0x00007563, 0x00000002 },
+ { 0x006075f0, 0x00000021 },
+ { 0x20007073, 0x00000004 },
+ { 0x00005073, 0x00000004 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x00007576, 0x00000002 },
+ { 0x00007577, 0x00000002 },
+ { 0x0000750e, 0x00000002 },
+ { 0x0000750f, 0x00000002 },
+ { 0x00a05000, 0x00000002 },
+ { 0x00600083, 0x0000000c },
+ { 0x006075f0, 0x00000021 },
+ { 0x000075f8, 0x00000002 },
+ { 0x00000083, 0x00000004 },
+ { 0x000a750e, 0x00000002 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x0020750f, 0x00000002 },
+ { 0x00600086, 0x00000004 },
+ { 0x00007570, 0x00000002 },
+ { 0x00007571, 0x00000002 },
+ { 0x00007572, 0x00000006 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x00005000, 0x00000002 },
+ { 0x00a05000, 0x00000002 },
+ { 0x00007568, 0x00000002 },
+ { 0x00061000, 0x00000002 },
+ { 0x00000095, 0x0000000c },
+ { 0x00058000, 0x00000002 },
+ { 0x0c607562, 0x00000002 },
+ { 0x00000097, 0x00000004 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x00600096, 0x00000004 },
+ { 0x400070e5, 0000000000 },
+ { 0x000380e6, 0x00000002 },
+ { 0x040025c5, 0x00000002 },
+ { 0x000380e5, 0x00000002 },
+ { 0x000000a8, 0x0000001c },
+ { 0x000650aa, 0x00000018 },
+ { 0x040025bb, 0x00000002 },
+ { 0x000610ab, 0x00000018 },
+ { 0x040075bc, 0000000000 },
+ { 0x000075bb, 0x00000002 },
+ { 0x000075bc, 0000000000 },
+ { 0x00090000, 0x00000006 },
+ { 0x00090000, 0x00000002 },
+ { 0x000d8002, 0x00000006 },
+ { 0x00007832, 0x00000002 },
+ { 0x00005000, 0x00000002 },
+ { 0x000380e7, 0x00000002 },
+ { 0x04002c97, 0x00000002 },
+ { 0x00007820, 0x00000002 },
+ { 0x00007821, 0x00000002 },
+ { 0x00007800, 0000000000 },
+ { 0x01200000, 0x00000002 },
+ { 0x20077000, 0x00000002 },
+ { 0x01200000, 0x00000002 },
+ { 0x20007000, 0x00000002 },
+ { 0x00061000, 0x00000002 },
+ { 0x0120751b, 0x00000002 },
+ { 0x8040750a, 0x00000002 },
+ { 0x8040750b, 0x00000002 },
+ { 0x00110000, 0x00000002 },
+ { 0x000380e5, 0x00000002 },
+ { 0x000000c6, 0x0000001c },
+ { 0x000610ab, 0x00000018 },
+ { 0x844075bd, 0x00000002 },
+ { 0x000610aa, 0x00000018 },
+ { 0x840075bb, 0x00000002 },
+ { 0x000610ab, 0x00000018 },
+ { 0x844075bc, 0x00000002 },
+ { 0x000000c9, 0x00000004 },
+ { 0x804075bd, 0x00000002 },
+ { 0x800075bb, 0x00000002 },
+ { 0x804075bc, 0x00000002 },
+ { 0x00108000, 0x00000002 },
+ { 0x01400000, 0x00000002 },
+ { 0x006000cd, 0x0000000c },
+ { 0x20c07000, 0x00000020 },
+ { 0x000000cf, 0x00000012 },
+ { 0x00800000, 0x00000006 },
+ { 0x0080751d, 0x00000006 },
+ { 0000000000, 0000000000 },
+ { 0x0000775c, 0x00000002 },
+ { 0x00a05000, 0x00000002 },
+ { 0x00661000, 0x00000002 },
+ { 0x0460275d, 0x00000020 },
+ { 0x00004000, 0000000000 },
+ { 0x01e00830, 0x00000002 },
+ { 0x21007000, 0000000000 },
+ { 0x6464614d, 0000000000 },
+ { 0x69687420, 0000000000 },
+ { 0x00000073, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0x00005000, 0x00000002 },
+ { 0x000380d0, 0x00000002 },
+ { 0x040025e0, 0x00000002 },
+ { 0x000075e1, 0000000000 },
+ { 0x00000001, 0000000000 },
+ { 0x000380e0, 0x00000002 },
+ { 0x04002394, 0x00000002 },
+ { 0x00005000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0x00000008, 0000000000 },
+ { 0x00000004, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+ { 0000000000, 0000000000 },
+};
+
+
+#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 RADEON_READ_PLL(drm_device_t *dev, int addr)
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ RADEON_WRITE8(RADEON_CLOCK_CNTL_INDEX, addr & 0x1f);
+ return RADEON_READ(RADEON_CLOCK_CNTL_DATA);
+}
+
+#if RADEON_FIFO_DEBUG
+static void radeon_status( drm_radeon_private_t *dev_priv )
+{
+ printk( "%s:\n", __FUNCTION__ );
+ printk( "RBBM_STATUS = 0x%08x\n",
+ (unsigned int)RADEON_READ( RADEON_RBBM_STATUS ) );
+ printk( "CP_RB_RTPR = 0x%08x\n",
+ (unsigned int)RADEON_READ( RADEON_CP_RB_RPTR ) );
+ printk( "CP_RB_WTPR = 0x%08x\n",
+ (unsigned int)RADEON_READ( RADEON_CP_RB_WPTR ) );
+}
+#endif
+
+
+/* ================================================================
+ * Engine, FIFO control
+ */
+
+static int radeon_do_pixcache_flush( drm_radeon_private_t *dev_priv )
+{
+ u32 tmp;
+ int i;
+
+ tmp = RADEON_READ( RADEON_RB2D_DSTCACHE_CTLSTAT );
+ tmp |= RADEON_RB2D_DC_FLUSH_ALL;
+ RADEON_WRITE( RADEON_RB2D_DSTCACHE_CTLSTAT, tmp );
+
+ for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
+ if ( !(RADEON_READ( RADEON_RB2D_DSTCACHE_CTLSTAT )
+ & RADEON_RB2D_DC_BUSY) ) {
+ return 0;
+ }
+ udelay( 1 );
+ }
+
+#if RADEON_FIFO_DEBUG
+ DRM_ERROR( "failed!\n" );
+ radeon_status( dev_priv );
+#endif
+ return -EBUSY;
+}
+
+static int radeon_do_wait_for_fifo( drm_radeon_private_t *dev_priv,
+ int entries )
+{
+ int i;
+
+ for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
+ int slots = ( RADEON_READ( RADEON_RBBM_STATUS )
+ & RADEON_RBBM_FIFOCNT_MASK );
+ if ( slots >= entries ) return 0;
+ udelay( 1 );
+ }
+
+#if RADEON_FIFO_DEBUG
+ DRM_ERROR( "failed!\n" );
+ radeon_status( dev_priv );
+#endif
+ return -EBUSY;
+}
+
+static int radeon_do_wait_for_idle( drm_radeon_private_t *dev_priv )
+{
+ int i, ret;
+
+ ret = radeon_do_wait_for_fifo( dev_priv, 64 );
+ if ( ret < 0 ) return ret;
+
+ for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
+ if ( !(RADEON_READ( RADEON_RBBM_STATUS )
+ & RADEON_RBBM_ACTIVE) ) {
+ radeon_do_pixcache_flush( dev_priv );
+ return 0;
+ }
+ udelay( 1 );
+ }
+
+#if RADEON_FIFO_DEBUG
+ DRM_ERROR( "failed!\n" );
+ radeon_status( dev_priv );
+#endif
+ return -EBUSY;
+}
+
+
+/* ================================================================
+ * CP control, initialization
+ */
+
+/* Load the microcode for the CP */
+static void radeon_cp_load_microcode( drm_radeon_private_t *dev_priv )
+{
+ int i;
+
+ radeon_do_wait_for_idle( dev_priv );
+
+ RADEON_WRITE( RADEON_CP_ME_RAM_ADDR, 0 );
+ for ( i = 0 ; i < 256 ; i++ ) {
+ RADEON_WRITE( RADEON_CP_ME_RAM_DATAH,
+ radeon_cp_microcode[i][1] );
+ RADEON_WRITE( RADEON_CP_ME_RAM_DATAL,
+ radeon_cp_microcode[i][0] );
+ }
+}
+
+/* Flush any pending commands to the CP. 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 radeon_do_cp_flush( drm_radeon_private_t *dev_priv )
+{
+#if 0
+ u32 tmp;
+
+ tmp = RADEON_READ( RADEON_CP_RB_WPTR ) | (1 << 31);
+ RADEON_WRITE( RADEON_CP_RB_WPTR, tmp );
+#endif
+}
+
+/* Wait for the CP to go idle.
+ */
+int radeon_do_cp_idle( drm_radeon_private_t *dev_priv )
+{
+ RING_LOCALS;
+
+ BEGIN_RING( 6 );
+
+ RADEON_PURGE_CACHE();
+ RADEON_PURGE_ZCACHE();
+ RADEON_WAIT_UNTIL_IDLE();
+
+ ADVANCE_RING();
+
+ return radeon_do_wait_for_idle( dev_priv );
+}
+
+/* Start the Command Processor.
+ */
+static void radeon_do_cp_start( drm_radeon_private_t *dev_priv )
+{
+ RING_LOCALS;
+
+ radeon_do_wait_for_idle( dev_priv );
+
+ RADEON_WRITE( RADEON_CP_CSQ_CNTL, dev_priv->cp_mode );
+
+ dev_priv->cp_running = 1;
+
+ BEGIN_RING( 6 );
+
+ RADEON_PURGE_CACHE();
+ RADEON_PURGE_ZCACHE();
+ RADEON_WAIT_UNTIL_IDLE();
+
+ ADVANCE_RING();
+}
+
+/* Reset the Command Processor. This will not flush any pending
+ * commands, so you must wait for the CP command stream to complete
+ * before calling this routine.
+ */
+static void radeon_do_cp_reset( drm_radeon_private_t *dev_priv )
+{
+ u32 cur_read_ptr;
+
+ cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
+ RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
+ *dev_priv->ring.head = cur_read_ptr;
+ dev_priv->ring.tail = cur_read_ptr;
+}
+
+/* Stop the Command Processor. This will not flush any pending
+ * commands, so you must flush the command stream and wait for the CP
+ * to go idle before calling this routine.
+ */
+static void radeon_do_cp_stop( drm_radeon_private_t *dev_priv )
+{
+ RADEON_WRITE( RADEON_CP_CSQ_CNTL, RADEON_CSQ_PRIDIS_INDDIS );
+
+ dev_priv->cp_running = 0;
+}
+
+/* Reset the engine. This will stop the CP if it is running.
+ */
+static int radeon_do_engine_reset( drm_device_t *dev )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ u32 clock_cntl_index, mclk_cntl, rbbm_soft_reset;
+ DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+ radeon_do_pixcache_flush( dev_priv );
+
+ clock_cntl_index = RADEON_READ( RADEON_CLOCK_CNTL_INDEX );
+ mclk_cntl = RADEON_READ_PLL( dev, RADEON_MCLK_CNTL );
+
+ /* FIXME: remove magic number here and in radeon ddx driver!!! */
+ RADEON_WRITE_PLL( RADEON_MCLK_CNTL, mclk_cntl | 0x003f00000 );
+
+ rbbm_soft_reset = RADEON_READ( RADEON_RBBM_SOFT_RESET );
+
+ RADEON_WRITE( RADEON_RBBM_SOFT_RESET, ( rbbm_soft_reset |
+ RADEON_SOFT_RESET_CP |
+ RADEON_SOFT_RESET_HI |
+ RADEON_SOFT_RESET_SE |
+ RADEON_SOFT_RESET_RE |
+ RADEON_SOFT_RESET_PP |
+ RADEON_SOFT_RESET_E2 |
+ RADEON_SOFT_RESET_RB |
+ RADEON_SOFT_RESET_HDP ) );
+ RADEON_READ( RADEON_RBBM_SOFT_RESET );
+ RADEON_WRITE( RADEON_RBBM_SOFT_RESET, ( rbbm_soft_reset &
+ ~( RADEON_SOFT_RESET_CP |
+ RADEON_SOFT_RESET_HI |
+ RADEON_SOFT_RESET_SE |
+ RADEON_SOFT_RESET_RE |
+ RADEON_SOFT_RESET_PP |
+ RADEON_SOFT_RESET_E2 |
+ RADEON_SOFT_RESET_RB |
+ RADEON_SOFT_RESET_HDP ) ) );
+ RADEON_READ( RADEON_RBBM_SOFT_RESET );
+
+
+ RADEON_WRITE_PLL( RADEON_MCLK_CNTL, mclk_cntl );
+ RADEON_WRITE( RADEON_CLOCK_CNTL_INDEX, clock_cntl_index );
+ RADEON_WRITE( RADEON_RBBM_SOFT_RESET, rbbm_soft_reset );
+
+ /* Reset the CP ring */
+ radeon_do_cp_reset( dev_priv );
+
+ /* The CP is no longer running after an engine reset */
+ dev_priv->cp_running = 0;
+
+ /* Reset any pending vertex, indirect buffers */
+ radeon_freelist_reset( dev );
+
+ return 0;
+}
+
+static void radeon_cp_init_ring_buffer( drm_device_t *dev )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ u32 ring_start, cur_read_ptr;
+ u32 tmp;
+
+ /* Initialize the memory controller */
+ RADEON_WRITE( RADEON_MC_FB_LOCATION,
+ (dev_priv->agp_vm_start - 1) & 0xffff0000 );
+ RADEON_WRITE( RADEON_MC_AGP_LOCATION,
+ (((dev_priv->agp_vm_start - 1 +
+ dev_priv->agp_size) & 0xffff0000) |
+ (dev_priv->agp_vm_start >> 16)) );
+
+ ring_start = (dev_priv->cp_ring->offset
+ - dev->agp->base
+ + dev_priv->agp_vm_start);
+
+ RADEON_WRITE( RADEON_CP_RB_BASE, ring_start );
+
+ /* Set the write pointer delay */
+ RADEON_WRITE( RADEON_CP_RB_WPTR_DELAY, 0 );
+
+ /* Initialize the ring buffer's read and write pointers */
+ cur_read_ptr = RADEON_READ( RADEON_CP_RB_RPTR );
+ RADEON_WRITE( RADEON_CP_RB_WPTR, cur_read_ptr );
+ *dev_priv->ring.head = cur_read_ptr;
+ dev_priv->ring.tail = cur_read_ptr;
+
+ RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR, dev_priv->ring_rptr->offset );
+
+ /* Set ring buffer size */
+ RADEON_WRITE( RADEON_CP_RB_CNTL, dev_priv->ring.size_l2qw );
+
+ radeon_do_wait_for_idle( dev_priv );
+
+ /* Turn off PCI GART */
+ tmp = RADEON_READ( RADEON_AIC_CNTL ) & ~RADEON_PCIGART_TRANSLATE_EN;
+ RADEON_WRITE( RADEON_AIC_CNTL, tmp );
+
+ /* Turn on bus mastering */
+ tmp = RADEON_READ( RADEON_BUS_CNTL ) & ~RADEON_BUS_MASTER_DIS;
+ RADEON_WRITE( RADEON_BUS_CNTL, tmp );
+
+ /* Sync everything up */
+ RADEON_WRITE( RADEON_ISYNC_CNTL,
+ (RADEON_ISYNC_ANY2D_IDLE3D |
+ RADEON_ISYNC_ANY3D_IDLE2D |
+ RADEON_ISYNC_WAIT_IDLEGUI |
+ RADEON_ISYNC_CPSCRATCH_IDLEGUI) );
+}
+
+static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
+{
+ drm_radeon_private_t *dev_priv;
+ int i;
+
+ dev_priv = drm_alloc( sizeof(drm_radeon_private_t), DRM_MEM_DRIVER );
+ if ( dev_priv == NULL )
+ return -ENOMEM;
+ dev->dev_private = (void *)dev_priv;
+
+ memset( dev_priv, 0, sizeof(drm_radeon_private_t) );
+
+ dev_priv->is_pci = init->is_pci;
+
+ /* We don't support PCI cards until PCI GART is implemented.
+ * Fail here so we can remove all checks for PCI cards around
+ * the CP 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 > RADEON_MAX_USEC_TIMEOUT ) {
+ drm_free( dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER );
+ dev->dev_private = NULL;
+ return -EINVAL;
+ }
+
+ dev_priv->cp_mode = init->cp_mode;
+
+ /* 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->cp_mode != RADEON_CSQ_PRIBM_INDDIS ) &&
+ ( init->cp_mode != RADEON_CSQ_PRIBM_INDBM ) ) {
+ drm_free( dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER );
+ dev->dev_private = NULL;
+ return -EINVAL;
+ }
+
+ switch ( init->fb_bpp ) {
+ case 16:
+ dev_priv->color_fmt = RADEON_COLOR_FORMAT_RGB565;
+ break;
+ case 32:
+ default:
+ dev_priv->color_fmt = RADEON_COLOR_FORMAT_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 = RADEON_DEPTH_FORMAT_16BIT_INT_Z;
+ break;
+ case 32:
+ default:
+ dev_priv->depth_fmt = RADEON_DEPTH_FORMAT_24BIT_INT_Z;
+ break;
+ }
+ dev_priv->depth_offset = init->depth_offset;
+ dev_priv->depth_pitch = init->depth_pitch;
+
+ dev_priv->front_pitch_offset = (((dev_priv->front_pitch/64) << 22) |
+ (dev_priv->front_offset >> 10));
+ dev_priv->back_pitch_offset = (((dev_priv->back_pitch/64) << 22) |
+ (dev_priv->back_offset >> 10));
+ dev_priv->depth_pitch_offset = (((dev_priv->depth_pitch/64) << 22) |
+ (dev_priv->depth_offset >> 10));
+
+ /* Hardware state for depth clears. Remove this if/when we no
+ * longer clear the depth buffer with a 3D rectangle. Hard-code
+ * all values to prevent unwanted 3D state from slipping through
+ * and screwing with the clear operation.
+ */
+ dev_priv->depth_clear.rb3d_cntl = (RADEON_PLANE_MASK_ENABLE |
+ RADEON_Z_ENABLE |
+ (dev_priv->color_fmt << 10) |
+ RADEON_ZBLOCK16);
+
+ dev_priv->depth_clear.rb3d_zstencilcntl = (dev_priv->depth_fmt |
+ RADEON_Z_TEST_ALWAYS |
+ RADEON_STENCIL_TEST_ALWAYS |
+ RADEON_STENCIL_S_FAIL_KEEP |
+ RADEON_STENCIL_ZPASS_KEEP |
+ RADEON_STENCIL_ZFAIL_KEEP |
+ RADEON_Z_WRITE_ENABLE);
+
+ dev_priv->depth_clear.se_cntl = (RADEON_FFACE_CULL_CW |
+ RADEON_BFACE_SOLID |
+ RADEON_FFACE_SOLID |
+ RADEON_FLAT_SHADE_VTX_LAST |
+
+ RADEON_DIFFUSE_SHADE_FLAT |
+ RADEON_ALPHA_SHADE_FLAT |
+ RADEON_SPECULAR_SHADE_FLAT |
+ RADEON_FOG_SHADE_FLAT |
+
+ RADEON_VTX_PIX_CENTER_OGL |
+ RADEON_ROUND_MODE_TRUNC |
+ RADEON_ROUND_PREC_8TH_PIX);
+
+ /* 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->cp_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_radeon_sarea_t *)((u8 *)dev_priv->sarea->handle +
+ init->sarea_priv_offset);
+
+ DO_IOREMAP( dev_priv->cp_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->agp_size = init->agp_size;
+ dev_priv->agp_vm_start = RADEON_READ( RADEON_CONFIG_APER_SIZE );
+ dev_priv->agp_buffers_offset = (dev_priv->buffers->offset
+ - dev->agp->base
+ + dev_priv->agp_vm_start);
+
+ dev_priv->ring.head = ((__volatile__ u32 *)
+ dev_priv->ring_rptr->handle);
+
+ dev_priv->ring.start = (u32 *)dev_priv->cp_ring->handle;
+ dev_priv->ring.end = ((u32 *)dev_priv->cp_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;
+
+#if 0
+ /* Initialize the scratch register pointer. This will cause
+ * the scratch register values to be written out to memory
+ * whenever they are updated.
+ * FIXME: This doesn't quite work yet, so we're disabling it
+ * for the release.
+ */
+ RADEON_WRITE( RADEON_SCRATCH_ADDR, (dev_priv->ring_rptr->offset +
+ RADEON_SCRATCH_REG_OFFSET) );
+ RADEON_WRITE( RADEON_SCRATCH_UMSK, 0x7 );
+#endif
+
+ dev_priv->scratch = ((__volatile__ u32 *)
+ dev_priv->ring_rptr->handle +
+ (RADEON_SCRATCH_REG_OFFSET / sizeof(u32)));
+
+ dev_priv->sarea_priv->last_frame = 0;
+ RADEON_WRITE( RADEON_LAST_FRAME_REG,
+ dev_priv->sarea_priv->last_frame );
+
+ dev_priv->sarea_priv->last_dispatch = 0;
+ RADEON_WRITE( RADEON_LAST_DISPATCH_REG,
+ dev_priv->sarea_priv->last_dispatch );
+
+ dev_priv->sarea_priv->last_clear = 0;
+ RADEON_WRITE( RADEON_LAST_CLEAR_REG,
+ dev_priv->sarea_priv->last_clear );
+
+ radeon_cp_load_microcode( dev_priv );
+ radeon_cp_init_ring_buffer( dev );
+ radeon_do_engine_reset( dev );
+
+#if ROTATE_BUFS
+ dev_priv->last_buf = 0;
+#endif
+
+ return 0;
+}
+
+static int radeon_do_cleanup_cp( drm_device_t *dev )
+{
+ if ( dev->dev_private ) {
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ DO_IOREMAPFREE( dev_priv->cp_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_radeon_private_t),
+ DRM_MEM_DRIVER );
+ dev->dev_private = NULL;
+ }
+
+ return 0;
+}
+
+int radeon_cp_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_radeon_init_t init;
+
+ if ( copy_from_user( &init, (drm_radeon_init_t *)arg, sizeof(init) ) )
+ return -EFAULT;
+
+ switch ( init.func ) {
+ case RADEON_INIT_CP:
+ return radeon_do_init_cp( dev, &init );
+ case RADEON_CLEANUP_CP:
+ return radeon_do_cleanup_cp( dev );
+ }
+
+ return -EINVAL;
+}
+
+int radeon_cp_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_radeon_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->cp_running ) {
+ DRM_DEBUG( "%s while CP running\n", __FUNCTION__ );
+ return 0;
+ }
+ if ( dev_priv->cp_mode == RADEON_CSQ_PRIDIS_INDDIS ) {
+ DRM_DEBUG( "%s called with bogus CP mode (%d)\n",
+ __FUNCTION__, dev_priv->cp_mode );
+ return 0;
+ }
+
+ radeon_do_cp_start( dev_priv );
+
+ return 0;
+}
+
+/* Stop the CP. The engine must have been idled before calling this
+ * routine.
+ */
+int radeon_cp_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_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_cp_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_radeon_init_t *)arg, sizeof(stop) ) )
+ return -EFAULT;
+
+ /* Flush any pending CP commands. This ensures any outstanding
+ * commands are exectuted by the engine before we turn it off.
+ */
+ if ( stop.flush ) {
+ radeon_do_cp_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 = radeon_do_cp_idle( dev_priv );
+ if ( ret < 0 ) return ret;
+ }
+
+ /* Finally, we can turn off the CP. If the engine isn't idle,
+ * we will get some dropped triangles as they won't be fully
+ * rendered before the CP is shut down.
+ */
+ radeon_do_cp_stop( dev_priv );
+
+ /* Reset the engine */
+ radeon_do_engine_reset( dev );
+
+ return 0;
+}
+
+/* Just reset the CP ring. Called as part of an X Server engine reset.
+ */
+int radeon_cp_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_radeon_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;
+ }
+
+ radeon_do_cp_reset( dev_priv );
+
+ /* The CP is no longer running after an engine reset */
+ dev_priv->cp_running = 0;
+
+ return 0;
+}
+
+int radeon_cp_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_radeon_private_t *dev_priv = dev->dev_private;
+ DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+ if ( !_DRM_LOCK_IS_HELD( dev->lock.hw_lock->lock ) ||
+ dev->lock.pid != current->pid ) {
+ DRM_ERROR( "%s called without lock held\n", __FUNCTION__ );
+ return -EINVAL;
+ }
+
+ return radeon_do_cp_idle( dev_priv );
+}
+
+int radeon_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 radeon_do_engine_reset( dev );
+}
+
+
+/* ================================================================
+ * Fullscreen mode
+ */
+
+static int radeon_do_init_pageflip( drm_device_t *dev )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+ dev_priv->crtc_offset = RADEON_READ( RADEON_CRTC_OFFSET );
+ dev_priv->crtc_offset_cntl = RADEON_READ( RADEON_CRTC_OFFSET_CNTL );
+
+ RADEON_WRITE( RADEON_CRTC_OFFSET, dev_priv->front_offset );
+ RADEON_WRITE( RADEON_CRTC_OFFSET_CNTL,
+ dev_priv->crtc_offset_cntl |
+ RADEON_CRTC_OFFSET_FLIP_CNTL );
+
+ dev_priv->page_flipping = 1;
+ dev_priv->current_page = 0;
+
+ return 0;
+}
+
+int radeon_do_cleanup_pageflip( drm_device_t *dev )
+{
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ DRM_DEBUG( "%s\n", __FUNCTION__ );
+
+ RADEON_WRITE( RADEON_CRTC_OFFSET, dev_priv->crtc_offset );
+ RADEON_WRITE( RADEON_CRTC_OFFSET_CNTL, dev_priv->crtc_offset_cntl );
+
+ dev_priv->page_flipping = 0;
+ dev_priv->current_page = 0;
+
+ return 0;
+}
+
+int radeon_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_radeon_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_radeon_fullscreen_t *)arg,
+ sizeof(fs) ) )
+ return -EFAULT;
+
+ switch ( fs.func ) {
+ case RADEON_INIT_FULLSCREEN:
+ return radeon_do_init_pageflip( dev );
+ case RADEON_CLEANUP_FULLSCREEN:
+ return radeon_do_cleanup_pageflip( dev );
+ }
+
+ return -EINVAL;
+}
+
+
+/* ================================================================
+ * Freelist management
+ */
+#define RADEON_BUFFER_USED 0xffffffff
+#define RADEON_BUFFER_FREE 0
+
+#if 0
+static int radeon_freelist_init( drm_device_t *dev )
+{
+ drm_device_dma_t *dma = dev->dma;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_buf_t *buf;
+ drm_radeon_buf_priv_t *buf_priv;
+ drm_radeon_freelist_t *entry;
+ int i;
+
+ dev_priv->head = drm_alloc( sizeof(drm_radeon_freelist_t),
+ DRM_MEM_DRIVER );
+ if ( dev_priv->head == NULL )
+ return -ENOMEM;
+
+ memset( dev_priv->head, 0, sizeof(drm_radeon_freelist_t) );
+ dev_priv->head->age = RADEON_BUFFER_USED;
+
+ for ( i = 0 ; i < dma->buf_count ; i++ ) {
+ buf = dma->buflist[i];
+ buf_priv = buf->dev_private;
+
+ entry = drm_alloc( sizeof(drm_radeon_freelist_t),
+ DRM_MEM_DRIVER );
+ if ( !entry ) return -ENOMEM;
+
+ entry->age = RADEON_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 *radeon_freelist_get( drm_device_t *dev )
+{
+ drm_device_dma_t *dma = dev->dma;
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+ drm_radeon_buf_priv_t *buf_priv;
+ drm_buf_t *buf;
+ int i, t;
+#if ROTATE_BUFS
+ int start;
+#endif
+
+ /* 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 ) {
+ DRM_DEBUG( " ret buf=%d last=%d pid=0\n",
+ buf->idx, dev_priv->last_buf );
+ return buf;
+ }
+ DRM_DEBUG( " skipping buf=%d pid=%d\n",
+ buf->idx, buf->pid );
+ }
+
+#if ROTATE_BUFS
+ if ( ++dev_priv->last_buf >= dma->buf_count )
+ dev_priv->last_buf = 0;
+ start = dev_priv->last_buf;
+#endif
+ for ( t = 0 ; t < dev_priv->usec_timeout ; t++ ) {
+#if 0
+ /* FIXME: Disable this for now */
+ u32 done_age = dev_priv->scratch[RADEON_LAST_DISPATCH];
+#else
+ u32 done_age = RADEON_READ( RADEON_LAST_DISPATCH_REG );
+#endif
+#if ROTATE_BUFS
+ for ( i = start ; i < dma->buf_count ; i++ ) {
+#else
+ for ( i = 0 ; i < dma->buf_count ; i++ ) {
+#endif
+ 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;
+ DRM_DEBUG( " ret buf=%d last=%d age=%d done=%d\n", buf->idx, dev_priv->last_buf, buf_priv->age, done_age );
+ return buf;
+ }
+ DRM_DEBUG( " skipping buf=%d age=%d done=%d\n",
+ buf->idx, buf_priv->age,
+ done_age );
+#if ROTATE_BUFS
+ start = 0;
+#endif
+ }
+ udelay( 1 );
+ }
+
+ DRM_ERROR( "returning NULL!\n" );
+ return NULL;
+}
+
+void radeon_freelist_reset( drm_device_t *dev )
+{
+ drm_device_dma_t *dma = dev->dma;
+#if ROTATE_BUFS
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+#endif
+ int i;
+
+#if ROTATE_BUFS
+ dev_priv->last_buf = 0;
+#endif
+ for ( i = 0 ; i < dma->buf_count ; i++ ) {
+ drm_buf_t *buf = dma->buflist[i];
+ drm_radeon_buf_priv_t *buf_priv = buf->dev_private;
+ buf_priv->age = 0;
+ }
+}
+
+
+/* ================================================================
+ * CP command submission
+ */
+
+int radeon_wait_ring( drm_radeon_private_t *dev_priv, int n )
+{
+ drm_radeon_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 return value is ignored in the BEGIN_RING macro! */
+ DRM_ERROR( "failed!\n" );
+ return -EBUSY;
+}
+
+void radeon_update_ring_snapshot( drm_radeon_private_t *dev_priv )
+{
+ drm_radeon_ring_buffer_t *ring = &dev_priv->ring;
+
+ ring->space = *ring->head - ring->tail;
+ if ( ring->space == 0 )
+ atomic_inc( &dev_priv->idle_count );
+ if ( ring->space <= 0 )
+ ring->space += ring->size;
+}
+
+static int radeon_cp_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 = radeon_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 radeon_cp_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 = radeon_cp_get_buffers( dev, &d );
+ }
+
+ if ( copy_to_user( (drm_dma_t *) arg, &d, sizeof(d) ) )
+ return -EFAULT;
+
+ return ret;
+}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)