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path: root/drivers/char/drm/r300_cmdbuf.c
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Diffstat (limited to 'drivers/char/drm/r300_cmdbuf.c')
-rw-r--r--drivers/char/drm/r300_cmdbuf.c1071
1 files changed, 0 insertions, 1071 deletions
diff --git a/drivers/char/drm/r300_cmdbuf.c b/drivers/char/drm/r300_cmdbuf.c
deleted file mode 100644
index 702df45320f..00000000000
--- a/drivers/char/drm/r300_cmdbuf.c
+++ /dev/null
@@ -1,1071 +0,0 @@
-/* r300_cmdbuf.c -- Command buffer emission for R300 -*- linux-c -*-
- *
- * Copyright (C) The Weather Channel, Inc. 2002.
- * Copyright (C) 2004 Nicolai Haehnle.
- * All Rights Reserved.
- *
- * The Weather Channel (TM) funded Tungsten Graphics to develop the
- * initial release of the Radeon 8500 driver under the XFree86 license.
- * This notice must be preserved.
- *
- * 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:
- * Nicolai Haehnle <prefect_@gmx.net>
- */
-
-#include "drmP.h"
-#include "drm.h"
-#include "radeon_drm.h"
-#include "radeon_drv.h"
-#include "r300_reg.h"
-
-#define R300_SIMULTANEOUS_CLIPRECTS 4
-
-/* Values for R300_RE_CLIPRECT_CNTL depending on the number of cliprects
- */
-static const int r300_cliprect_cntl[4] = {
- 0xAAAA,
- 0xEEEE,
- 0xFEFE,
- 0xFFFE
-};
-
-/**
- * Emit up to R300_SIMULTANEOUS_CLIPRECTS cliprects from the given command
- * buffer, starting with index n.
- */
-static int r300_emit_cliprects(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf, int n)
-{
- struct drm_clip_rect box;
- int nr;
- int i;
- RING_LOCALS;
-
- nr = cmdbuf->nbox - n;
- if (nr > R300_SIMULTANEOUS_CLIPRECTS)
- nr = R300_SIMULTANEOUS_CLIPRECTS;
-
- DRM_DEBUG("%i cliprects\n", nr);
-
- if (nr) {
- BEGIN_RING(6 + nr * 2);
- OUT_RING(CP_PACKET0(R300_RE_CLIPRECT_TL_0, nr * 2 - 1));
-
- for (i = 0; i < nr; ++i) {
- if (DRM_COPY_FROM_USER_UNCHECKED
- (&box, &cmdbuf->boxes[n + i], sizeof(box))) {
- DRM_ERROR("copy cliprect faulted\n");
- return -EFAULT;
- }
-
- if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RV515) {
- box.x1 = (box.x1) &
- R300_CLIPRECT_MASK;
- box.y1 = (box.y1) &
- R300_CLIPRECT_MASK;
- box.x2 = (box.x2) &
- R300_CLIPRECT_MASK;
- box.y2 = (box.y2) &
- R300_CLIPRECT_MASK;
- } else {
- box.x1 = (box.x1 + R300_CLIPRECT_OFFSET) &
- R300_CLIPRECT_MASK;
- box.y1 = (box.y1 + R300_CLIPRECT_OFFSET) &
- R300_CLIPRECT_MASK;
- box.x2 = (box.x2 + R300_CLIPRECT_OFFSET) &
- R300_CLIPRECT_MASK;
- box.y2 = (box.y2 + R300_CLIPRECT_OFFSET) &
- R300_CLIPRECT_MASK;
-
- }
- OUT_RING((box.x1 << R300_CLIPRECT_X_SHIFT) |
- (box.y1 << R300_CLIPRECT_Y_SHIFT));
- OUT_RING((box.x2 << R300_CLIPRECT_X_SHIFT) |
- (box.y2 << R300_CLIPRECT_Y_SHIFT));
-
- }
-
- OUT_RING_REG(R300_RE_CLIPRECT_CNTL, r300_cliprect_cntl[nr - 1]);
-
- /* TODO/SECURITY: Force scissors to a safe value, otherwise the
- * client might be able to trample over memory.
- * The impact should be very limited, but I'd rather be safe than
- * sorry.
- */
- OUT_RING(CP_PACKET0(R300_RE_SCISSORS_TL, 1));
- OUT_RING(0);
- OUT_RING(R300_SCISSORS_X_MASK | R300_SCISSORS_Y_MASK);
- ADVANCE_RING();
- } else {
- /* Why we allow zero cliprect rendering:
- * There are some commands in a command buffer that must be submitted
- * even when there are no cliprects, e.g. DMA buffer discard
- * or state setting (though state setting could be avoided by
- * simulating a loss of context).
- *
- * Now since the cmdbuf interface is so chaotic right now (and is
- * bound to remain that way for a bit until things settle down),
- * it is basically impossible to filter out the commands that are
- * necessary and those that aren't.
- *
- * So I choose the safe way and don't do any filtering at all;
- * instead, I simply set up the engine so that all rendering
- * can't produce any fragments.
- */
- BEGIN_RING(2);
- OUT_RING_REG(R300_RE_CLIPRECT_CNTL, 0);
- ADVANCE_RING();
- }
-
- return 0;
-}
-
-static u8 r300_reg_flags[0x10000 >> 2];
-
-void r300_init_reg_flags(struct drm_device *dev)
-{
- int i;
- drm_radeon_private_t *dev_priv = dev->dev_private;
-
- memset(r300_reg_flags, 0, 0x10000 >> 2);
-#define ADD_RANGE_MARK(reg, count,mark) \
- for(i=((reg)>>2);i<((reg)>>2)+(count);i++)\
- r300_reg_flags[i]|=(mark);
-
-#define MARK_SAFE 1
-#define MARK_CHECK_OFFSET 2
-
-#define ADD_RANGE(reg, count) ADD_RANGE_MARK(reg, count, MARK_SAFE)
-
- /* these match cmducs() command in r300_driver/r300/r300_cmdbuf.c */
- ADD_RANGE(R300_SE_VPORT_XSCALE, 6);
- ADD_RANGE(R300_VAP_CNTL, 1);
- ADD_RANGE(R300_SE_VTE_CNTL, 2);
- ADD_RANGE(0x2134, 2);
- ADD_RANGE(R300_VAP_CNTL_STATUS, 1);
- ADD_RANGE(R300_VAP_INPUT_CNTL_0, 2);
- ADD_RANGE(0x21DC, 1);
- ADD_RANGE(R300_VAP_UNKNOWN_221C, 1);
- ADD_RANGE(R300_VAP_CLIP_X_0, 4);
- ADD_RANGE(R300_VAP_PVS_WAITIDLE, 1);
- ADD_RANGE(R300_VAP_UNKNOWN_2288, 1);
- ADD_RANGE(R300_VAP_OUTPUT_VTX_FMT_0, 2);
- ADD_RANGE(R300_VAP_PVS_CNTL_1, 3);
- ADD_RANGE(R300_GB_ENABLE, 1);
- ADD_RANGE(R300_GB_MSPOS0, 5);
- ADD_RANGE(R300_TX_CNTL, 1);
- ADD_RANGE(R300_TX_ENABLE, 1);
- ADD_RANGE(0x4200, 4);
- ADD_RANGE(0x4214, 1);
- ADD_RANGE(R300_RE_POINTSIZE, 1);
- ADD_RANGE(0x4230, 3);
- ADD_RANGE(R300_RE_LINE_CNT, 1);
- ADD_RANGE(R300_RE_UNK4238, 1);
- ADD_RANGE(0x4260, 3);
- ADD_RANGE(R300_RE_SHADE, 4);
- ADD_RANGE(R300_RE_POLYGON_MODE, 5);
- ADD_RANGE(R300_RE_ZBIAS_CNTL, 1);
- ADD_RANGE(R300_RE_ZBIAS_T_FACTOR, 4);
- ADD_RANGE(R300_RE_OCCLUSION_CNTL, 1);
- ADD_RANGE(R300_RE_CULL_CNTL, 1);
- ADD_RANGE(0x42C0, 2);
- ADD_RANGE(R300_RS_CNTL_0, 2);
-
- ADD_RANGE(R300_SC_HYPERZ, 2);
- ADD_RANGE(0x43E8, 1);
-
- ADD_RANGE(0x46A4, 5);
-
- ADD_RANGE(R300_RE_FOG_STATE, 1);
- ADD_RANGE(R300_FOG_COLOR_R, 3);
- ADD_RANGE(R300_PP_ALPHA_TEST, 2);
- ADD_RANGE(0x4BD8, 1);
- ADD_RANGE(R300_PFS_PARAM_0_X, 64);
- ADD_RANGE(0x4E00, 1);
- ADD_RANGE(R300_RB3D_CBLEND, 2);
- ADD_RANGE(R300_RB3D_COLORMASK, 1);
- ADD_RANGE(R300_RB3D_BLEND_COLOR, 3);
- ADD_RANGE_MARK(R300_RB3D_COLOROFFSET0, 1, MARK_CHECK_OFFSET); /* check offset */
- ADD_RANGE(R300_RB3D_COLORPITCH0, 1);
- ADD_RANGE(0x4E50, 9);
- ADD_RANGE(0x4E88, 1);
- ADD_RANGE(0x4EA0, 2);
- ADD_RANGE(R300_ZB_CNTL, 3);
- ADD_RANGE(R300_ZB_FORMAT, 4);
- ADD_RANGE_MARK(R300_ZB_DEPTHOFFSET, 1, MARK_CHECK_OFFSET); /* check offset */
- ADD_RANGE(R300_ZB_DEPTHPITCH, 1);
- ADD_RANGE(R300_ZB_DEPTHCLEARVALUE, 1);
- ADD_RANGE(R300_ZB_ZMASK_OFFSET, 13);
-
- ADD_RANGE(R300_TX_FILTER_0, 16);
- ADD_RANGE(R300_TX_FILTER1_0, 16);
- ADD_RANGE(R300_TX_SIZE_0, 16);
- ADD_RANGE(R300_TX_FORMAT_0, 16);
- ADD_RANGE(R300_TX_PITCH_0, 16);
- /* Texture offset is dangerous and needs more checking */
- ADD_RANGE_MARK(R300_TX_OFFSET_0, 16, MARK_CHECK_OFFSET);
- ADD_RANGE(R300_TX_CHROMA_KEY_0, 16);
- ADD_RANGE(R300_TX_BORDER_COLOR_0, 16);
-
- /* Sporadic registers used as primitives are emitted */
- ADD_RANGE(R300_ZB_ZCACHE_CTLSTAT, 1);
- ADD_RANGE(R300_RB3D_DSTCACHE_CTLSTAT, 1);
- ADD_RANGE(R300_VAP_INPUT_ROUTE_0_0, 8);
- ADD_RANGE(R300_VAP_INPUT_ROUTE_1_0, 8);
-
- if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RV515) {
- ADD_RANGE(R500_VAP_INDEX_OFFSET, 1);
- ADD_RANGE(R500_US_CONFIG, 2);
- ADD_RANGE(R500_US_CODE_ADDR, 3);
- ADD_RANGE(R500_US_FC_CTRL, 1);
- ADD_RANGE(R500_RS_IP_0, 16);
- ADD_RANGE(R500_RS_INST_0, 16);
- ADD_RANGE(R500_RB3D_COLOR_CLEAR_VALUE_AR, 2);
- ADD_RANGE(R500_RB3D_CONSTANT_COLOR_AR, 2);
- ADD_RANGE(R500_ZB_FIFO_SIZE, 2);
- } else {
- ADD_RANGE(R300_PFS_CNTL_0, 3);
- ADD_RANGE(R300_PFS_NODE_0, 4);
- ADD_RANGE(R300_PFS_TEXI_0, 64);
- ADD_RANGE(R300_PFS_INSTR0_0, 64);
- ADD_RANGE(R300_PFS_INSTR1_0, 64);
- ADD_RANGE(R300_PFS_INSTR2_0, 64);
- ADD_RANGE(R300_PFS_INSTR3_0, 64);
- ADD_RANGE(R300_RS_INTERP_0, 8);
- ADD_RANGE(R300_RS_ROUTE_0, 8);
-
- }
-}
-
-static __inline__ int r300_check_range(unsigned reg, int count)
-{
- int i;
- if (reg & ~0xffff)
- return -1;
- for (i = (reg >> 2); i < (reg >> 2) + count; i++)
- if (r300_reg_flags[i] != MARK_SAFE)
- return 1;
- return 0;
-}
-
-static __inline__ int r300_emit_carefully_checked_packet0(drm_radeon_private_t *
- dev_priv,
- drm_radeon_kcmd_buffer_t
- * cmdbuf,
- drm_r300_cmd_header_t
- header)
-{
- int reg;
- int sz;
- int i;
- int values[64];
- RING_LOCALS;
-
- sz = header.packet0.count;
- reg = (header.packet0.reghi << 8) | header.packet0.reglo;
-
- if ((sz > 64) || (sz < 0)) {
- DRM_ERROR
- ("Cannot emit more than 64 values at a time (reg=%04x sz=%d)\n",
- reg, sz);
- return -EINVAL;
- }
- for (i = 0; i < sz; i++) {
- values[i] = ((int *)cmdbuf->buf)[i];
- switch (r300_reg_flags[(reg >> 2) + i]) {
- case MARK_SAFE:
- break;
- case MARK_CHECK_OFFSET:
- if (!radeon_check_offset(dev_priv, (u32) values[i])) {
- DRM_ERROR
- ("Offset failed range check (reg=%04x sz=%d)\n",
- reg, sz);
- return -EINVAL;
- }
- break;
- default:
- DRM_ERROR("Register %04x failed check as flag=%02x\n",
- reg + i * 4, r300_reg_flags[(reg >> 2) + i]);
- return -EINVAL;
- }
- }
-
- BEGIN_RING(1 + sz);
- OUT_RING(CP_PACKET0(reg, sz - 1));
- OUT_RING_TABLE(values, sz);
- ADVANCE_RING();
-
- cmdbuf->buf += sz * 4;
- cmdbuf->bufsz -= sz * 4;
-
- return 0;
-}
-
-/**
- * Emits a packet0 setting arbitrary registers.
- * Called by r300_do_cp_cmdbuf.
- *
- * Note that checks are performed on contents and addresses of the registers
- */
-static __inline__ int r300_emit_packet0(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf,
- drm_r300_cmd_header_t header)
-{
- int reg;
- int sz;
- RING_LOCALS;
-
- sz = header.packet0.count;
- reg = (header.packet0.reghi << 8) | header.packet0.reglo;
-
- if (!sz)
- return 0;
-
- if (sz * 4 > cmdbuf->bufsz)
- return -EINVAL;
-
- if (reg + sz * 4 >= 0x10000) {
- DRM_ERROR("No such registers in hardware reg=%04x sz=%d\n", reg,
- sz);
- return -EINVAL;
- }
-
- if (r300_check_range(reg, sz)) {
- /* go and check everything */
- return r300_emit_carefully_checked_packet0(dev_priv, cmdbuf,
- header);
- }
- /* the rest of the data is safe to emit, whatever the values the user passed */
-
- BEGIN_RING(1 + sz);
- OUT_RING(CP_PACKET0(reg, sz - 1));
- OUT_RING_TABLE((int *)cmdbuf->buf, sz);
- ADVANCE_RING();
-
- cmdbuf->buf += sz * 4;
- cmdbuf->bufsz -= sz * 4;
-
- return 0;
-}
-
-/**
- * Uploads user-supplied vertex program instructions or parameters onto
- * the graphics card.
- * Called by r300_do_cp_cmdbuf.
- */
-static __inline__ int r300_emit_vpu(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf,
- drm_r300_cmd_header_t header)
-{
- int sz;
- int addr;
- RING_LOCALS;
-
- sz = header.vpu.count;
- addr = (header.vpu.adrhi << 8) | header.vpu.adrlo;
-
- if (!sz)
- return 0;
- if (sz * 16 > cmdbuf->bufsz)
- return -EINVAL;
-
- BEGIN_RING(5 + sz * 4);
- /* Wait for VAP to come to senses.. */
- /* there is no need to emit it multiple times, (only once before VAP is programmed,
- but this optimization is for later */
- OUT_RING_REG(R300_VAP_PVS_WAITIDLE, 0);
- OUT_RING_REG(R300_VAP_PVS_UPLOAD_ADDRESS, addr);
- OUT_RING(CP_PACKET0_TABLE(R300_VAP_PVS_UPLOAD_DATA, sz * 4 - 1));
- OUT_RING_TABLE((int *)cmdbuf->buf, sz * 4);
-
- ADVANCE_RING();
-
- cmdbuf->buf += sz * 16;
- cmdbuf->bufsz -= sz * 16;
-
- return 0;
-}
-
-/**
- * Emit a clear packet from userspace.
- * Called by r300_emit_packet3.
- */
-static __inline__ int r300_emit_clear(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf)
-{
- RING_LOCALS;
-
- if (8 * 4 > cmdbuf->bufsz)
- return -EINVAL;
-
- BEGIN_RING(10);
- OUT_RING(CP_PACKET3(R200_3D_DRAW_IMMD_2, 8));
- OUT_RING(R300_PRIM_TYPE_POINT | R300_PRIM_WALK_RING |
- (1 << R300_PRIM_NUM_VERTICES_SHIFT));
- OUT_RING_TABLE((int *)cmdbuf->buf, 8);
- ADVANCE_RING();
-
- cmdbuf->buf += 8 * 4;
- cmdbuf->bufsz -= 8 * 4;
-
- return 0;
-}
-
-static __inline__ int r300_emit_3d_load_vbpntr(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf,
- u32 header)
-{
- int count, i, k;
-#define MAX_ARRAY_PACKET 64
- u32 payload[MAX_ARRAY_PACKET];
- u32 narrays;
- RING_LOCALS;
-
- count = (header >> 16) & 0x3fff;
-
- if ((count + 1) > MAX_ARRAY_PACKET) {
- DRM_ERROR("Too large payload in 3D_LOAD_VBPNTR (count=%d)\n",
- count);
- return -EINVAL;
- }
- memset(payload, 0, MAX_ARRAY_PACKET * 4);
- memcpy(payload, cmdbuf->buf + 4, (count + 1) * 4);
-
- /* carefully check packet contents */
-
- narrays = payload[0];
- k = 0;
- i = 1;
- while ((k < narrays) && (i < (count + 1))) {
- i++; /* skip attribute field */
- if (!radeon_check_offset(dev_priv, payload[i])) {
- DRM_ERROR
- ("Offset failed range check (k=%d i=%d) while processing 3D_LOAD_VBPNTR packet.\n",
- k, i);
- return -EINVAL;
- }
- k++;
- i++;
- if (k == narrays)
- break;
- /* have one more to process, they come in pairs */
- if (!radeon_check_offset(dev_priv, payload[i])) {
- DRM_ERROR
- ("Offset failed range check (k=%d i=%d) while processing 3D_LOAD_VBPNTR packet.\n",
- k, i);
- return -EINVAL;
- }
- k++;
- i++;
- }
- /* do the counts match what we expect ? */
- if ((k != narrays) || (i != (count + 1))) {
- DRM_ERROR
- ("Malformed 3D_LOAD_VBPNTR packet (k=%d i=%d narrays=%d count+1=%d).\n",
- k, i, narrays, count + 1);
- return -EINVAL;
- }
-
- /* all clear, output packet */
-
- BEGIN_RING(count + 2);
- OUT_RING(header);
- OUT_RING_TABLE(payload, count + 1);
- ADVANCE_RING();
-
- cmdbuf->buf += (count + 2) * 4;
- cmdbuf->bufsz -= (count + 2) * 4;
-
- return 0;
-}
-
-static __inline__ int r300_emit_bitblt_multi(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf)
-{
- u32 *cmd = (u32 *) cmdbuf->buf;
- int count, ret;
- RING_LOCALS;
-
- count=(cmd[0]>>16) & 0x3fff;
-
- if (cmd[0] & 0x8000) {
- u32 offset;
-
- if (cmd[1] & (RADEON_GMC_SRC_PITCH_OFFSET_CNTL
- | RADEON_GMC_DST_PITCH_OFFSET_CNTL)) {
- offset = cmd[2] << 10;
- ret = !radeon_check_offset(dev_priv, offset);
- if (ret) {
- DRM_ERROR("Invalid bitblt first offset is %08X\n", offset);
- return -EINVAL;
- }
- }
-
- if ((cmd[1] & RADEON_GMC_SRC_PITCH_OFFSET_CNTL) &&
- (cmd[1] & RADEON_GMC_DST_PITCH_OFFSET_CNTL)) {
- offset = cmd[3] << 10;
- ret = !radeon_check_offset(dev_priv, offset);
- if (ret) {
- DRM_ERROR("Invalid bitblt second offset is %08X\n", offset);
- return -EINVAL;
- }
-
- }
- }
-
- BEGIN_RING(count+2);
- OUT_RING(cmd[0]);
- OUT_RING_TABLE((int *)(cmdbuf->buf + 4), count + 1);
- ADVANCE_RING();
-
- cmdbuf->buf += (count+2)*4;
- cmdbuf->bufsz -= (count+2)*4;
-
- return 0;
-}
-
-static __inline__ int r300_emit_indx_buffer(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf)
-{
- u32 *cmd = (u32 *) cmdbuf->buf;
- int count, ret;
- RING_LOCALS;
-
- count=(cmd[0]>>16) & 0x3fff;
-
- if ((cmd[1] & 0x8000ffff) != 0x80000810) {
- DRM_ERROR("Invalid indx_buffer reg address %08X\n", cmd[1]);
- return -EINVAL;
- }
- ret = !radeon_check_offset(dev_priv, cmd[2]);
- if (ret) {
- DRM_ERROR("Invalid indx_buffer offset is %08X\n", cmd[2]);
- return -EINVAL;
- }
-
- BEGIN_RING(count+2);
- OUT_RING(cmd[0]);
- OUT_RING_TABLE((int *)(cmdbuf->buf + 4), count + 1);
- ADVANCE_RING();
-
- cmdbuf->buf += (count+2)*4;
- cmdbuf->bufsz -= (count+2)*4;
-
- return 0;
-}
-
-static __inline__ int r300_emit_raw_packet3(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf)
-{
- u32 header;
- int count;
- RING_LOCALS;
-
- if (4 > cmdbuf->bufsz)
- return -EINVAL;
-
- /* Fixme !! This simply emits a packet without much checking.
- We need to be smarter. */
-
- /* obtain first word - actual packet3 header */
- header = *(u32 *) cmdbuf->buf;
-
- /* Is it packet 3 ? */
- if ((header >> 30) != 0x3) {
- DRM_ERROR("Not a packet3 header (0x%08x)\n", header);
- return -EINVAL;
- }
-
- count = (header >> 16) & 0x3fff;
-
- /* Check again now that we know how much data to expect */
- if ((count + 2) * 4 > cmdbuf->bufsz) {
- DRM_ERROR
- ("Expected packet3 of length %d but have only %d bytes left\n",
- (count + 2) * 4, cmdbuf->bufsz);
- return -EINVAL;
- }
-
- /* Is it a packet type we know about ? */
- switch (header & 0xff00) {
- case RADEON_3D_LOAD_VBPNTR: /* load vertex array pointers */
- return r300_emit_3d_load_vbpntr(dev_priv, cmdbuf, header);
-
- case RADEON_CNTL_BITBLT_MULTI:
- return r300_emit_bitblt_multi(dev_priv, cmdbuf);
-
- case RADEON_CP_INDX_BUFFER: /* DRAW_INDX_2 without INDX_BUFFER seems to lock up the gpu */
- return r300_emit_indx_buffer(dev_priv, cmdbuf);
- 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:
- /* these packets are safe */
- break;
- default:
- DRM_ERROR("Unknown packet3 header (0x%08x)\n", header);
- return -EINVAL;
- }
-
- BEGIN_RING(count + 2);
- OUT_RING(header);
- OUT_RING_TABLE((int *)(cmdbuf->buf + 4), count + 1);
- ADVANCE_RING();
-
- cmdbuf->buf += (count + 2) * 4;
- cmdbuf->bufsz -= (count + 2) * 4;
-
- return 0;
-}
-
-/**
- * Emit a rendering packet3 from userspace.
- * Called by r300_do_cp_cmdbuf.
- */
-static __inline__ int r300_emit_packet3(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf,
- drm_r300_cmd_header_t header)
-{
- int n;
- int ret;
- char *orig_buf = cmdbuf->buf;
- int orig_bufsz = cmdbuf->bufsz;
-
- /* This is a do-while-loop so that we run the interior at least once,
- * even if cmdbuf->nbox is 0. Compare r300_emit_cliprects for rationale.
- */
- n = 0;
- do {
- if (cmdbuf->nbox > R300_SIMULTANEOUS_CLIPRECTS) {
- ret = r300_emit_cliprects(dev_priv, cmdbuf, n);
- if (ret)
- return ret;
-
- cmdbuf->buf = orig_buf;
- cmdbuf->bufsz = orig_bufsz;
- }
-
- switch (header.packet3.packet) {
- case R300_CMD_PACKET3_CLEAR:
- DRM_DEBUG("R300_CMD_PACKET3_CLEAR\n");
- ret = r300_emit_clear(dev_priv, cmdbuf);
- if (ret) {
- DRM_ERROR("r300_emit_clear failed\n");
- return ret;
- }
- break;
-
- case R300_CMD_PACKET3_RAW:
- DRM_DEBUG("R300_CMD_PACKET3_RAW\n");
- ret = r300_emit_raw_packet3(dev_priv, cmdbuf);
- if (ret) {
- DRM_ERROR("r300_emit_raw_packet3 failed\n");
- return ret;
- }
- break;
-
- default:
- DRM_ERROR("bad packet3 type %i at %p\n",
- header.packet3.packet,
- cmdbuf->buf - sizeof(header));
- return -EINVAL;
- }
-
- n += R300_SIMULTANEOUS_CLIPRECTS;
- } while (n < cmdbuf->nbox);
-
- return 0;
-}
-
-/* Some of the R300 chips seem to be extremely touchy about the two registers
- * that are configured in r300_pacify.
- * Among the worst offenders seems to be the R300 ND (0x4E44): When userspace
- * sends a command buffer that contains only state setting commands and a
- * vertex program/parameter upload sequence, this will eventually lead to a
- * lockup, unless the sequence is bracketed by calls to r300_pacify.
- * So we should take great care to *always* call r300_pacify before
- * *anything* 3D related, and again afterwards. This is what the
- * call bracket in r300_do_cp_cmdbuf is for.
- */
-
-/**
- * Emit the sequence to pacify R300.
- */
-static __inline__ void r300_pacify(drm_radeon_private_t *dev_priv)
-{
- RING_LOCALS;
-
- BEGIN_RING(6);
- OUT_RING(CP_PACKET0(R300_RB3D_DSTCACHE_CTLSTAT, 0));
- OUT_RING(R300_RB3D_DSTCACHE_UNKNOWN_0A);
- OUT_RING(CP_PACKET0(R300_ZB_ZCACHE_CTLSTAT, 0));
- OUT_RING(R300_ZB_ZCACHE_CTLSTAT_ZC_FLUSH_FLUSH_AND_FREE|
- R300_ZB_ZCACHE_CTLSTAT_ZC_FREE_FREE);
- OUT_RING(CP_PACKET3(RADEON_CP_NOP, 0));
- OUT_RING(0x0);
- ADVANCE_RING();
-}
-
-/**
- * Called by r300_do_cp_cmdbuf to update the internal buffer age and state.
- * The actual age emit is done by r300_do_cp_cmdbuf, which is why you must
- * be careful about how this function is called.
- */
-static void r300_discard_buffer(struct drm_device * dev, struct drm_buf * buf)
-{
- drm_radeon_private_t *dev_priv = dev->dev_private;
- drm_radeon_buf_priv_t *buf_priv = buf->dev_private;
-
- buf_priv->age = ++dev_priv->sarea_priv->last_dispatch;
- buf->pending = 1;
- buf->used = 0;
-}
-
-static void r300_cmd_wait(drm_radeon_private_t * dev_priv,
- drm_r300_cmd_header_t header)
-{
- u32 wait_until;
- RING_LOCALS;
-
- if (!header.wait.flags)
- return;
-
- wait_until = 0;
-
- switch(header.wait.flags) {
- case R300_WAIT_2D:
- wait_until = RADEON_WAIT_2D_IDLE;
- break;
- case R300_WAIT_3D:
- wait_until = RADEON_WAIT_3D_IDLE;
- break;
- case R300_NEW_WAIT_2D_3D:
- wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_3D_IDLE;
- break;
- case R300_NEW_WAIT_2D_2D_CLEAN:
- wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_2D_IDLECLEAN;
- break;
- case R300_NEW_WAIT_3D_3D_CLEAN:
- wait_until = RADEON_WAIT_3D_IDLE|RADEON_WAIT_3D_IDLECLEAN;
- break;
- case R300_NEW_WAIT_2D_2D_CLEAN_3D_3D_CLEAN:
- wait_until = RADEON_WAIT_2D_IDLE|RADEON_WAIT_2D_IDLECLEAN;
- wait_until |= RADEON_WAIT_3D_IDLE|RADEON_WAIT_3D_IDLECLEAN;
- break;
- default:
- return;
- }
-
- BEGIN_RING(2);
- OUT_RING(CP_PACKET0(RADEON_WAIT_UNTIL, 0));
- OUT_RING(wait_until);
- ADVANCE_RING();
-}
-
-static int r300_scratch(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf,
- drm_r300_cmd_header_t header)
-{
- u32 *ref_age_base;
- u32 i, buf_idx, h_pending;
- RING_LOCALS;
-
- if (cmdbuf->bufsz <
- (sizeof(u64) + header.scratch.n_bufs * sizeof(buf_idx))) {
- return -EINVAL;
- }
-
- if (header.scratch.reg >= 5) {
- return -EINVAL;
- }
-
- dev_priv->scratch_ages[header.scratch.reg]++;
-
- ref_age_base = (u32 *)(unsigned long)*((uint64_t *)cmdbuf->buf);
-
- cmdbuf->buf += sizeof(u64);
- cmdbuf->bufsz -= sizeof(u64);
-
- for (i=0; i < header.scratch.n_bufs; i++) {
- buf_idx = *(u32 *)cmdbuf->buf;
- buf_idx *= 2; /* 8 bytes per buf */
-
- if (DRM_COPY_TO_USER(ref_age_base + buf_idx, &dev_priv->scratch_ages[header.scratch.reg], sizeof(u32))) {
- return -EINVAL;
- }
-
- if (DRM_COPY_FROM_USER(&h_pending, ref_age_base + buf_idx + 1, sizeof(u32))) {
- return -EINVAL;
- }
-
- if (h_pending == 0) {
- return -EINVAL;
- }
-
- h_pending--;
-
- if (DRM_COPY_TO_USER(ref_age_base + buf_idx + 1, &h_pending, sizeof(u32))) {
- return -EINVAL;
- }
-
- cmdbuf->buf += sizeof(buf_idx);
- cmdbuf->bufsz -= sizeof(buf_idx);
- }
-
- BEGIN_RING(2);
- OUT_RING( CP_PACKET0( RADEON_SCRATCH_REG0 + header.scratch.reg * 4, 0 ) );
- OUT_RING( dev_priv->scratch_ages[header.scratch.reg] );
- ADVANCE_RING();
-
- return 0;
-}
-
-/**
- * Uploads user-supplied vertex program instructions or parameters onto
- * the graphics card.
- * Called by r300_do_cp_cmdbuf.
- */
-static inline int r300_emit_r500fp(drm_radeon_private_t *dev_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf,
- drm_r300_cmd_header_t header)
-{
- int sz;
- int addr;
- int type;
- int clamp;
- int stride;
- RING_LOCALS;
-
- sz = header.r500fp.count;
- /* address is 9 bits 0 - 8, bit 1 of flags is part of address */
- addr = ((header.r500fp.adrhi_flags & 1) << 8) | header.r500fp.adrlo;
-
- type = !!(header.r500fp.adrhi_flags & R500FP_CONSTANT_TYPE);
- clamp = !!(header.r500fp.adrhi_flags & R500FP_CONSTANT_CLAMP);
-
- addr |= (type << 16);
- addr |= (clamp << 17);
-
- stride = type ? 4 : 6;
-
- DRM_DEBUG("r500fp %d %d type: %d\n", sz, addr, type);
- if (!sz)
- return 0;
- if (sz * stride * 4 > cmdbuf->bufsz)
- return -EINVAL;
-
- BEGIN_RING(3 + sz * stride);
- OUT_RING_REG(R500_GA_US_VECTOR_INDEX, addr);
- OUT_RING(CP_PACKET0_TABLE(R500_GA_US_VECTOR_DATA, sz * stride - 1));
- OUT_RING_TABLE((int *)cmdbuf->buf, sz * stride);
-
- ADVANCE_RING();
-
- cmdbuf->buf += sz * stride * 4;
- cmdbuf->bufsz -= sz * stride * 4;
-
- return 0;
-}
-
-
-/**
- * Parses and validates a user-supplied command buffer and emits appropriate
- * commands on the DMA ring buffer.
- * Called by the ioctl handler function radeon_cp_cmdbuf.
- */
-int r300_do_cp_cmdbuf(struct drm_device *dev,
- struct drm_file *file_priv,
- drm_radeon_kcmd_buffer_t *cmdbuf)
-{
- drm_radeon_private_t *dev_priv = dev->dev_private;
- struct drm_device_dma *dma = dev->dma;
- struct drm_buf *buf = NULL;
- int emit_dispatch_age = 0;
- int ret = 0;
-
- DRM_DEBUG("\n");
-
- /* See the comment above r300_emit_begin3d for why this call must be here,
- * and what the cleanup gotos are for. */
- r300_pacify(dev_priv);
-
- if (cmdbuf->nbox <= R300_SIMULTANEOUS_CLIPRECTS) {
- ret = r300_emit_cliprects(dev_priv, cmdbuf, 0);
- if (ret)
- goto cleanup;
- }
-
- while (cmdbuf->bufsz >= sizeof(drm_r300_cmd_header_t)) {
- int idx;
- drm_r300_cmd_header_t header;
-
- header.u = *(unsigned int *)cmdbuf->buf;
-
- cmdbuf->buf += sizeof(header);
- cmdbuf->bufsz -= sizeof(header);
-
- switch (header.header.cmd_type) {
- case R300_CMD_PACKET0:
- DRM_DEBUG("R300_CMD_PACKET0\n");
- ret = r300_emit_packet0(dev_priv, cmdbuf, header);
- if (ret) {
- DRM_ERROR("r300_emit_packet0 failed\n");
- goto cleanup;
- }
- break;
-
- case R300_CMD_VPU:
- DRM_DEBUG("R300_CMD_VPU\n");
- ret = r300_emit_vpu(dev_priv, cmdbuf, header);
- if (ret) {
- DRM_ERROR("r300_emit_vpu failed\n");
- goto cleanup;
- }
- break;
-
- case R300_CMD_PACKET3:
- DRM_DEBUG("R300_CMD_PACKET3\n");
- ret = r300_emit_packet3(dev_priv, cmdbuf, header);
- if (ret) {
- DRM_ERROR("r300_emit_packet3 failed\n");
- goto cleanup;
- }
- break;
-
- case R300_CMD_END3D:
- DRM_DEBUG("R300_CMD_END3D\n");
- /* TODO:
- Ideally userspace driver should not need to issue this call,
- i.e. the drm driver should issue it automatically and prevent
- lockups.
-
- In practice, we do not understand why this call is needed and what
- it does (except for some vague guesses that it has to do with cache
- coherence) and so the user space driver does it.
-
- Once we are sure which uses prevent lockups the code could be moved
- into the kernel and the userspace driver will not
- need to use this command.
-
- Note that issuing this command does not hurt anything
- except, possibly, performance */
- r300_pacify(dev_priv);
- break;
-
- case R300_CMD_CP_DELAY:
- /* simple enough, we can do it here */
- DRM_DEBUG("R300_CMD_CP_DELAY\n");
- {
- int i;
- RING_LOCALS;
-
- BEGIN_RING(header.delay.count);
- for (i = 0; i < header.delay.count; i++)
- OUT_RING(RADEON_CP_PACKET2);
- ADVANCE_RING();
- }
- break;
-
- case R300_CMD_DMA_DISCARD:
- DRM_DEBUG("RADEON_CMD_DMA_DISCARD\n");
- idx = header.dma.buf_idx;
- if (idx < 0 || idx >= dma->buf_count) {
- DRM_ERROR("buffer index %d (of %d max)\n",
- idx, dma->buf_count - 1);
- ret = -EINVAL;
- goto cleanup;
- }
-
- buf = dma->buflist[idx];
- if (buf->file_priv != file_priv || buf->pending) {
- DRM_ERROR("bad buffer %p %p %d\n",
- buf->file_priv, file_priv,
- buf->pending);
- ret = -EINVAL;
- goto cleanup;
- }
-
- emit_dispatch_age = 1;
- r300_discard_buffer(dev, buf);
- break;
-
- case R300_CMD_WAIT:
- DRM_DEBUG("R300_CMD_WAIT\n");
- r300_cmd_wait(dev_priv, header);
- break;
-
- case R300_CMD_SCRATCH:
- DRM_DEBUG("R300_CMD_SCRATCH\n");
- ret = r300_scratch(dev_priv, cmdbuf, header);
- if (ret) {
- DRM_ERROR("r300_scratch failed\n");
- goto cleanup;
- }
- break;
-
- case R300_CMD_R500FP:
- if ((dev_priv->flags & RADEON_FAMILY_MASK) < CHIP_RV515) {
- DRM_ERROR("Calling r500 command on r300 card\n");
- ret = -EINVAL;
- goto cleanup;
- }
- DRM_DEBUG("R300_CMD_R500FP\n");
- ret = r300_emit_r500fp(dev_priv, cmdbuf, header);
- if (ret) {
- DRM_ERROR("r300_emit_r500fp failed\n");
- goto cleanup;
- }
- break;
- default:
- DRM_ERROR("bad cmd_type %i at %p\n",
- header.header.cmd_type,
- cmdbuf->buf - sizeof(header));
- ret = -EINVAL;
- goto cleanup;
- }
- }
-
- DRM_DEBUG("END\n");
-
- cleanup:
- r300_pacify(dev_priv);
-
- /* We emit the vertex buffer age here, outside the pacifier "brackets"
- * for two reasons:
- * (1) This may coalesce multiple age emissions into a single one and
- * (2) more importantly, some chips lock up hard when scratch registers
- * are written inside the pacifier bracket.
- */
- if (emit_dispatch_age) {
- RING_LOCALS;
-
- /* Emit the vertex buffer age */
- BEGIN_RING(2);
- RADEON_DISPATCH_AGE(dev_priv->sarea_priv->last_dispatch);
- ADVANCE_RING();
- }
-
- COMMIT_RING();
-
- return ret;
-}