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drm/linux/radeon_cp.c

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/* 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 "radeon.h"
#include "drmP.h"
#include "radeon_drv.h"
#include <linux/interrupt.h> /* For task queue support */
#include <linux/delay.h>
#define RADEON_FIFO_DEBUG 0
#if defined(__alpha__)
# define PCIGART_ENABLED
#else
# undef PCIGART_ENABLED
#endif
/* 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 },
};
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 ) );
printk( "AIC_CNTL = 0x%08x\n",
(unsigned int)RADEON_READ( RADEON_AIC_CNTL ) );
printk( "AIC_STAT = 0x%08x\n",
(unsigned int)RADEON_READ( RADEON_AIC_STAT ) );
printk( "AIC_PT_BASE = 0x%08x\n",
(unsigned int)RADEON_READ( RADEON_AIC_PT_BASE ) );
printk( "TLB_ADDR = 0x%08x\n",
(unsigned int)RADEON_READ( RADEON_AIC_TLB_ADDR ) );
printk( "TLB_DATA = 0x%08x\n",
(unsigned int)RADEON_READ( RADEON_AIC_TLB_DATA ) );
}
#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;
DRM_DEBUG( "%s\n", __FUNCTION__ );
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 )
{
DRM_DEBUG( "%s\n", __FUNCTION__ );
#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;
DRM_DEBUG( "%s\n", __FUNCTION__ );
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;
DRM_DEBUG( "%s\n", __FUNCTION__ );
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;
DRM_DEBUG( "%s\n", __FUNCTION__ );
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 )
{
DRM_DEBUG( "%s\n", __FUNCTION__ );
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 );
RADEON_WRITE_PLL( RADEON_MCLK_CNTL, ( mclk_cntl |
RADEON_FORCEON_MCLKA |
RADEON_FORCEON_MCLKB |
RADEON_FORCEON_YCLKA |
RADEON_FORCEON_YCLKB |
RADEON_FORCEON_MC |
RADEON_FORCEON_AIC ) );
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 )
{
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 );
if ( !dev_priv->is_pci ) {
RADEON_WRITE( RADEON_MC_AGP_LOCATION,
(((dev_priv->agp_vm_start - 1 +
dev_priv->agp_size) & 0xffff0000) |
(dev_priv->agp_vm_start >> 16)) );
}
#if __REALLY_HAVE_AGP
if ( !dev_priv->is_pci )
ring_start = (dev_priv->cp_ring->offset
- dev->agp->base
+ dev_priv->agp_vm_start);
else
#endif
ring_start = (dev_priv->cp_ring->offset
- dev->sg->handle
+ 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;
if ( !dev_priv->is_pci ) {
RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
dev_priv->ring_rptr->offset );
} else {
drm_sg_mem_t *entry = dev->sg;
unsigned long tmp_ofs, page_ofs;
tmp_ofs = dev_priv->ring_rptr->offset - dev->sg->handle;
page_ofs = tmp_ofs >> PAGE_SHIFT;
#if defined(__alpha__) && (LINUX_VERSION_CODE >= 0x020400)
RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
entry->busaddr[page_ofs]);
DRM_DEBUG( "ring rptr: offset=0x%08x handle=0x%08lx\n",
entry->busaddr[page_ofs],
entry->handle + tmp_ofs );
#else
RADEON_WRITE( RADEON_CP_RB_RPTR_ADDR,
virt_to_bus(entry->pagelist[page_ofs]->virtual));
DRM_DEBUG( "ring rptr: offset=0x%08lx handle=0x%08lx\n",
virt_to_bus(entry->pagelist[page_ofs]->virtual),
entry->handle + tmp_ofs );
#endif
}
/* Set ring buffer size */
RADEON_WRITE( RADEON_CP_RB_CNTL, dev_priv->ring.size_l2qw );
radeon_do_wait_for_idle( dev_priv );
/* 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;
struct list_head *list;
u32 tmp;
DRM_DEBUG( "%s\n", __FUNCTION__ );
dev_priv = DRM(alloc)( sizeof(drm_radeon_private_t), DRM_MEM_DRIVER );
if ( dev_priv == NULL )
return -ENOMEM;
memset( dev_priv, 0, sizeof(drm_radeon_private_t) );
dev_priv->is_pci = init->is_pci;
#if !defined(PCIGART_ENABLED)
/* PCI support is not 100% working, so we disable it here.
*/
if ( dev_priv->is_pci ) {
DRM_ERROR( "PCI GART not yet supported for Radeon!\n" );
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
#endif
if ( dev_priv->is_pci && !dev->sg ) {
DRM_ERROR( "PCI GART memory not allocated!\n" );
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
dev_priv->usec_timeout = init->usec_timeout;
if ( dev_priv->usec_timeout < 1 ||
dev_priv->usec_timeout > RADEON_MAX_USEC_TIMEOUT ) {
DRM_DEBUG( "TIMEOUT problem!\n" );
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
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_DEBUG( "BAD cp_mode (%x)!\n", init->cp_mode );
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
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);
list_for_each(list, &dev->maplist->head) {
drm_map_list_t *r_list = (drm_map_list_t *)list;
if( r_list->map &&
r_list->map->type == _DRM_SHM &&
r_list->map->flags & _DRM_CONTAINS_LOCK ) {
dev_priv->sarea = r_list->map;
break;
}
}
if(!dev_priv->sarea) {
DRM_ERROR("could not find sarea!\n");
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->fb, init->fb_offset );
if(!dev_priv->fb) {
DRM_ERROR("could not find framebuffer!\n");
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->mmio, init->mmio_offset );
if(!dev_priv->mmio) {
DRM_ERROR("could not find mmio region!\n");
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->cp_ring, init->ring_offset );
if(!dev_priv->cp_ring) {
DRM_ERROR("could not find cp ring region!\n");
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->ring_rptr, init->ring_rptr_offset );
if(!dev_priv->ring_rptr) {
DRM_ERROR("could not find ring read pointer!\n");
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
DRM_FIND_MAP( dev_priv->buffers, init->buffers_offset );
if(!dev_priv->buffers) {
DRM_ERROR("could not find dma buffer region!\n");
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
if ( !dev_priv->is_pci ) {
DRM_FIND_MAP( dev_priv->agp_textures,
init->agp_textures_offset );
if(!dev_priv->agp_textures) {
DRM_ERROR("could not find agp texture region!\n");
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
}
dev_priv->sarea_priv =
(drm_radeon_sarea_t *)((u8 *)dev_priv->sarea->handle +
init->sarea_priv_offset);
if ( !dev_priv->is_pci ) {
DRM_IOREMAP( dev_priv->cp_ring );
DRM_IOREMAP( dev_priv->ring_rptr );
DRM_IOREMAP( dev_priv->buffers );
if(!dev_priv->cp_ring->handle ||
!dev_priv->ring_rptr->handle ||
!dev_priv->buffers->handle) {
DRM_ERROR("could not find ioremap agp regions!\n");
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -EINVAL;
}
} else {
dev_priv->cp_ring->handle =
(void *)dev_priv->cp_ring->offset;
dev_priv->ring_rptr->handle =
(void *)dev_priv->ring_rptr->offset;
dev_priv->buffers->handle = (void *)dev_priv->buffers->offset;
DRM_DEBUG( "dev_priv->cp_ring->handle %p\n",
dev_priv->cp_ring->handle );
DRM_DEBUG( "dev_priv->ring_rptr->handle %p\n",
dev_priv->ring_rptr->handle );
DRM_DEBUG( "dev_priv->buffers->handle %p\n",
dev_priv->buffers->handle );
}
dev_priv->agp_size = init->agp_size;
dev_priv->agp_vm_start = RADEON_READ( RADEON_CONFIG_APER_SIZE );
#if __REALLY_HAVE_AGP
if ( !dev_priv->is_pci )
dev_priv->agp_buffers_offset = (dev_priv->buffers->offset
- dev->agp->base
+ dev_priv->agp_vm_start);
else
#endif
dev_priv->agp_buffers_offset = (dev_priv->buffers->offset
- dev->sg->handle
+ dev_priv->agp_vm_start);
DRM_DEBUG( "dev_priv->agp_size %d\n",
dev_priv->agp_size );
DRM_DEBUG( "dev_priv->agp_vm_start 0x%x\n",
dev_priv->agp_vm_start );
DRM_DEBUG( "dev_priv->agp_buffers_offset 0x%lx\n",
dev_priv->agp_buffers_offset );
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;
dev_priv->ring.high_mark = RADEON_RING_HIGH_MARK;
#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 );
if ( dev_priv->is_pci ) {
if (!DRM(ati_pcigart_init)( dev, &dev_priv->phys_pci_gart,
&dev_priv->bus_pci_gart)) {
DRM_ERROR( "failed to init PCI GART!\n" );
dev->dev_private = (void *)dev_priv;
radeon_do_cleanup_cp(dev);
return -ENOMEM;
}
/* Turn on PCI GART
*/
tmp = RADEON_READ( RADEON_AIC_CNTL )
| RADEON_PCIGART_TRANSLATE_EN;
RADEON_WRITE( RADEON_AIC_CNTL, tmp );
/* set PCI GART page-table base address
*/
RADEON_WRITE( RADEON_AIC_PT_BASE, dev_priv->bus_pci_gart );
/* set address range for PCI address translate
*/
RADEON_WRITE( RADEON_AIC_LO_ADDR, dev_priv->agp_vm_start );
RADEON_WRITE( RADEON_AIC_HI_ADDR, dev_priv->agp_vm_start
+ dev_priv->agp_size - 1);
/* Turn off AGP aperture -- is this required for PCIGART?
*/
RADEON_WRITE( RADEON_MC_AGP_LOCATION, 0xffffffc0 ); /* ?? */
RADEON_WRITE( RADEON_AGP_COMMAND, 0 ); /* clear AGP_COMMAND */
} else {
/* Turn off PCI GART
*/
tmp = RADEON_READ( RADEON_AIC_CNTL )
& ~RADEON_PCIGART_TRANSLATE_EN;
RADEON_WRITE( RADEON_AIC_CNTL, tmp );
}
radeon_cp_load_microcode( dev_priv );
radeon_cp_init_ring_buffer( dev, dev_priv );
#if ROTATE_BUFS
dev_priv->last_buf = 0;
#endif
dev->dev_private = (void *)dev_priv;
radeon_do_engine_reset( dev );
return 0;
}
int radeon_do_cleanup_cp( drm_device_t *dev )
{
DRM_DEBUG( "%s\n", __FUNCTION__ );
if ( dev->dev_private ) {
drm_radeon_private_t *dev_priv = dev->dev_private;
if ( !dev_priv->is_pci ) {
DRM_IOREMAPFREE( dev_priv->cp_ring );
DRM_IOREMAPFREE( dev_priv->ring_rptr );
DRM_IOREMAPFREE( dev_priv->buffers );
} else {
if (!DRM(ati_pcigart_cleanup)( dev,
dev_priv->phys_pci_gart,
dev_priv->bus_pci_gart ))
DRM_ERROR( "failed to cleanup PCI GART!\n" );
}
DRM(free)( dev->dev_private, sizeof(drm_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__ );
LOCK_TEST_WITH_RETURN( dev );
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__ );
LOCK_TEST_WITH_RETURN( dev );
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__ );
LOCK_TEST_WITH_RETURN( dev );
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__ );
LOCK_TEST_WITH_RETURN( dev );
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__ );
LOCK_TEST_WITH_RETURN( dev );
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;
LOCK_TEST_WITH_RETURN( dev );
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++ ) {
radeon_update_ring_snapshot( ring );
if ( ring->space > n )
return 0;
udelay( 1 );
}
/* FIXME: This return value is ignored in the BEGIN_RING macro! */
#if RADEON_FIFO_DEBUG
radeon_status( dev_priv );
DRM_ERROR( "failed!\n" );
#endif
return -EBUSY;
}
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;
LOCK_TEST_WITH_RETURN( dev );
if ( copy_from_user( &d, (drm_dma_t *)arg, sizeof(d) ) )
return -EFAULT;
/* Please don't send us buffers.
*/
if ( d.send_count != 0 ) {
DRM_ERROR( "Process %d trying to send %d buffers via drmDMA\n",
current->pid, d.send_count );
return -EINVAL;
}
/* We'll send you buffers.
*/
if ( d.request_count < 0 || d.request_count > dma->buf_count ) {
DRM_ERROR( "Process %d trying to get %d buffers (of %d max)\n",
current->pid, d.request_count, dma->buf_count );
return -EINVAL;
}
d.granted_count = 0;
if ( d.request_count ) {
ret = radeon_cp_get_buffers( dev, &d );
}
if ( copy_to_user( (drm_dma_t *)arg, &d, sizeof(d) ) )
return -EFAULT;
return ret;
}
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