drm/shared-core/radeon_cs.c

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/*
* Copyright 2008 Jerome Glisse.
* 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:
* Jerome Glisse <glisse@freedesktop.org>
*/
#include "drmP.h"
#include "radeon_drm.h"
#include "radeon_drv.h"
#include "r300_reg.h"
int radeon_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *fpriv)
{
struct drm_radeon_private *dev_priv = dev->dev_private;
struct drm_radeon_cs *cs = data;
uint32_t *packets = NULL;
uint32_t cs_id;
uint32_t card_offset;
void *ib = NULL;
long size;
int r;
RING_LOCALS;
/* set command stream id to 0 which is fake id */
cs_id = 0;
DRM_COPY_TO_USER(&cs->cs_id, &cs_id, sizeof(uint32_t));
if (dev_priv == NULL) {
DRM_ERROR("called with no initialization\n");
return -EINVAL;
}
if (!cs->dwords) {
return 0;
}
/* limit cs to 64K ib */
if (cs->dwords > (16 * 1024)) {
return -EINVAL;
}
/* copy cs from userspace maybe we should copy into ib to save
* one copy but ib will be mapped wc so not good for cmd checking
* somethings worth testing i guess (Jerome)
*/
size = cs->dwords * sizeof(uint32_t);
packets = drm_alloc(size, DRM_MEM_DRIVER);
if (packets == NULL) {
return -ENOMEM;
}
if (DRM_COPY_FROM_USER(packets, (void __user *)(unsigned long)cs->packets, size)) {
r = -EFAULT;
goto out;
}
/* get ib */
r = dev_priv->cs.ib_get(dev, &ib, cs->dwords, &card_offset);
if (r) {
goto out;
}
/* now parse command stream */
r = dev_priv->cs.parse(dev, fpriv, ib, packets, cs->dwords);
if (r) {
goto out;
}
BEGIN_RING(4);
OUT_RING(CP_PACKET0(RADEON_CP_IB_BASE, 1));
OUT_RING(card_offset);
OUT_RING(cs->dwords);
OUT_RING(CP_PACKET2());
ADVANCE_RING();
/* emit cs id sequence */
dev_priv->cs.id_emit(dev, &cs_id);
COMMIT_RING();
DRM_COPY_TO_USER(&cs->cs_id, &cs_id, sizeof(uint32_t));
out:
dev_priv->cs.ib_free(dev, ib, cs->dwords);
drm_free(packets, size, DRM_MEM_DRIVER);
return r;
}
/* for non-mm */
static int radeon_nomm_relocate(struct drm_device *dev, struct drm_file *file_priv, uint32_t *reloc, uint32_t *offset)
{
*offset = reloc[1];
return 0;
}
#define RELOC_SIZE 2
#define RADEON_2D_OFFSET_MASK 0x3fffff
static __inline__ int radeon_cs_relocate_packet0(struct drm_device *dev, struct drm_file *file_priv,
uint32_t *packets, uint32_t offset_dw)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
uint32_t hdr = packets[offset_dw];
uint32_t reg = (hdr & R300_CP_PACKET0_REG_MASK) << 2;
uint32_t val = packets[offset_dw + 1];
uint32_t packet3_hdr = packets[offset_dw+2];
uint32_t tmp, offset;
int ret;
/* this is too strict we may want to expand the length in the future and have
old kernels ignore it. */
if (packet3_hdr != (RADEON_CP_PACKET3 | RADEON_CP_NOP | (RELOC_SIZE << 16))) {
DRM_ERROR("Packet 3 was %x should have been %x\n", packet3_hdr, RADEON_CP_PACKET3 | RADEON_CP_NOP | (RELOC_SIZE << 16));
return -EINVAL;
}
switch(reg) {
case RADEON_DST_PITCH_OFFSET:
case RADEON_SRC_PITCH_OFFSET:
/* pass in the start of the reloc */
ret = dev_priv->cs.relocate(dev, file_priv, packets + offset_dw + 2, &offset);
if (ret)
return ret;
tmp = (val & RADEON_2D_OFFSET_MASK) << 10;
val &= ~RADEON_2D_OFFSET_MASK;
offset += tmp;
offset >>= 10;
val |= offset;
break;
case R300_RB3D_COLOROFFSET0:
case R300_ZB_DEPTHOFFSET:
case R300_TX_OFFSET_0:
case R300_TX_OFFSET_0+4:
ret = dev_priv->cs.relocate(dev, file_priv, packets + offset_dw + 2, &offset);
if (ret)
return ret;
offset &= 0xffffffe0;
val += offset;
break;
default:
break;
}
packets[offset_dw + 1] = val;
return 0;
}
static int radeon_cs_relocate_packet3(struct drm_device *dev, struct drm_file *file_priv,
uint32_t *packets, uint32_t offset_dw)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
uint32_t hdr = packets[offset_dw];
int num_dw = (hdr & RADEON_CP_PACKET_COUNT_MASK) >> 16;
uint32_t reg = hdr & 0xff00;
uint32_t offset, val, tmp;
int ret;
switch(reg) {
case RADEON_CNTL_HOSTDATA_BLT:
{
val = packets[offset_dw + 2];
ret = dev_priv->cs.relocate(dev, file_priv, packets + offset_dw + num_dw + 2, &offset);
if (ret)
return ret;
tmp = (val & RADEON_2D_OFFSET_MASK) << 10;
val &= ~RADEON_2D_OFFSET_MASK;
offset += tmp;
offset >>= 10;
val |= offset;
packets[offset_dw + 2] = val;
}
default:
return -EINVAL;
}
return 0;
}
static __inline__ int radeon_cs_check_offset(struct drm_device *dev,
uint32_t reg, uint32_t val)
{
uint32_t offset;
switch(reg) {
case RADEON_DST_PITCH_OFFSET:
case RADEON_SRC_PITCH_OFFSET:
offset = val & ((1 << 22) - 1);
offset <<= 10;
break;
case R300_RB3D_COLOROFFSET0:
case R300_ZB_DEPTHOFFSET:
offset = val;
break;
case R300_TX_OFFSET_0:
case R300_TX_OFFSET_0+4:
offset = val & 0xffffffe0;
break;
}
return 0;
}
int radeon_cs_packet0(struct drm_device *dev, struct drm_file *file_priv,
uint32_t *packets, uint32_t offset_dw)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
uint32_t hdr = packets[offset_dw];
int num_dw = ((hdr & RADEON_CP_PACKET_COUNT_MASK) >> 16) + 2;
int need_reloc = 0;
int reg = (hdr & R300_CP_PACKET0_REG_MASK) << 2;
int count_dw = 1;
int ret;
while (count_dw < num_dw) {
/* need to have something like the r300 validation here -
list of allowed registers */
int flags;
ret = r300_check_range(reg, 1);
switch(ret) {
case -1:
DRM_ERROR("Illegal register %x\n", reg);
break;
case 0:
break;
case 1:
flags = r300_get_reg_flags(reg);
if (flags == MARK_CHECK_OFFSET) {
if (num_dw > 2) {
DRM_ERROR("Cannot relocate inside type stream of reg0 packets\n");
return -EINVAL;
}
ret = radeon_cs_relocate_packet0(dev, file_priv, packets, offset_dw);
if (ret)
return ret;
DRM_DEBUG("need to relocate %x %d\n", reg, flags);
/* okay it should be followed by a NOP */
} else if (flags == MARK_CHECK_SCISSOR) {
DRM_DEBUG("need to validate scissor %x %d\n", reg, flags);
} else {
DRM_DEBUG("illegal register %x %d\n", reg, flags);
return -EINVAL;
}
break;
}
count_dw++;
reg += 4;
}
return 0;
}
int radeon_cs_parse(struct drm_device *dev, struct drm_file *file_priv,
void *ib, uint32_t *packets, uint32_t dwords)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
volatile int rb;
int size_dw = dwords;
/* scan the packet for various things */
int count_dw = 0;
int ret = 0;
while (count_dw < size_dw && ret == 0) {
int hdr = packets[count_dw];
int num_dw = (hdr & RADEON_CP_PACKET_COUNT_MASK) >> 16;
int reg;
switch (hdr & RADEON_CP_PACKET_MASK) {
case RADEON_CP_PACKET0:
ret = radeon_cs_packet0(dev, file_priv, packets, count_dw);
break;
case RADEON_CP_PACKET1:
case RADEON_CP_PACKET2:
reg = hdr & RADEON_CP_PACKET0_REG_MASK;
DRM_DEBUG("Packet 1/2: %d %x\n", num_dw, reg);
break;
case RADEON_CP_PACKET3:
reg = hdr & 0xff00;
2008-07-28 01:42:53 -06:00
switch(reg) {
case RADEON_CNTL_HOSTDATA_BLT:
radeon_cs_relocate_packet3(dev, file_priv, packets, count_dw);
break;
2008-07-28 01:42:53 -06:00
case RADEON_CNTL_BITBLT_MULTI:
case RADEON_3D_LOAD_VBPNTR: /* load vertex array pointers */
case RADEON_CP_INDX_BUFFER:
DRM_ERROR("need relocate packet 3 for %x\n", reg);
break;
case RADEON_CP_3D_DRAW_IMMD_2: /* triggers drawing using in-packet vertex data */
case RADEON_CP_3D_DRAW_VBUF_2: /* triggers drawing of vertex buffers setup elsewhere */
case RADEON_CP_3D_DRAW_INDX_2: /* triggers drawing using indices to vertex buffer */
case RADEON_WAIT_FOR_IDLE:
case RADEON_CP_NOP:
break;
default:
DRM_ERROR("unknown packet 3 %x\n", reg);
ret = -EINVAL;
}
break;
}
count_dw += num_dw+2;
}
if (ret)
return ret;
/* copy the packet into the IB */
memcpy(ib, packets, dwords * sizeof(uint32_t));
/* read back last byte to flush WC buffers */
rb = readl((ib + (dwords-1) * sizeof(uint32_t)));
return 0;
}
uint32_t radeon_cs_id_get(struct drm_radeon_private *radeon)
{
/* FIXME: protect with a spinlock */
/* FIXME: check if wrap affect last reported wrap & sequence */
radeon->cs.id_scnt = (radeon->cs.id_scnt + 1) & 0x00FFFFFF;
if (!radeon->cs.id_scnt) {
/* increment wrap counter */
radeon->cs.id_wcnt += 0x01000000;
/* valid sequence counter start at 1 */
radeon->cs.id_scnt = 1;
}
return (radeon->cs.id_scnt | radeon->cs.id_wcnt);
}
void r100_cs_id_emit(struct drm_device *dev, uint32_t *id)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
/* ISYNC_CNTL should have CPSCRACTH bit set */
*id = radeon_cs_id_get(dev_priv);
/* emit id in SCRATCH4 (not used yet in old drm) */
BEGIN_RING(2);
OUT_RING(CP_PACKET0(RADEON_SCRATCH_REG4, 0));
OUT_RING(*id);
ADVANCE_RING();
}
void r300_cs_id_emit(struct drm_device *dev, uint32_t *id)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
RING_LOCALS;
/* ISYNC_CNTL should not have CPSCRACTH bit set */
*id = radeon_cs_id_get(dev_priv);
/* emit id in SCRATCH6 */
BEGIN_RING(6);
OUT_RING(CP_PACKET0(R300_CP_RESYNC_ADDR, 0));
OUT_RING(6);
OUT_RING(CP_PACKET0(R300_CP_RESYNC_DATA, 0));
OUT_RING(*id);
OUT_RING(CP_PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
OUT_RING(R300_RB3D_DC_FINISH);
ADVANCE_RING();
}
uint32_t r100_cs_id_last_get(struct drm_device *dev)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
return RADEON_READ(RADEON_SCRATCH_REG4);
}
uint32_t r300_cs_id_last_get(struct drm_device *dev)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
return RADEON_READ(RADEON_SCRATCH_REG6);
}
int radeon_cs_init(struct drm_device *dev)
{
drm_radeon_private_t *dev_priv = dev->dev_private;
if (dev_priv->chip_family < CHIP_RV280) {
dev_priv->cs.id_emit = r100_cs_id_emit;
dev_priv->cs.id_last_get = r100_cs_id_last_get;
} else if (dev_priv->chip_family < CHIP_R600) {
dev_priv->cs.id_emit = r300_cs_id_emit;
dev_priv->cs.id_last_get = r300_cs_id_last_get;
}
dev_priv->cs.parse = radeon_cs_parse;
/* ib get depends on memory manager or not so memory manager */
dev_priv->cs.relocate = radeon_nomm_relocate;
return 0;
}