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path: root/drivers/char/drm/savage_state.c
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Diffstat (limited to 'drivers/char/drm/savage_state.c')
-rw-r--r--drivers/char/drm/savage_state.c1163
1 files changed, 0 insertions, 1163 deletions
diff --git a/drivers/char/drm/savage_state.c b/drivers/char/drm/savage_state.c
deleted file mode 100644
index 5f6238fdf1f..00000000000
--- a/drivers/char/drm/savage_state.c
+++ /dev/null
@@ -1,1163 +0,0 @@
-/* savage_state.c -- State and drawing support for Savage
- *
- * Copyright 2004 Felix Kuehling
- * 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, sub license,
- * 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
- * NON-INFRINGEMENT. IN NO EVENT SHALL FELIX KUEHLING 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.
- */
-#include "drmP.h"
-#include "savage_drm.h"
-#include "savage_drv.h"
-
-void savage_emit_clip_rect_s3d(drm_savage_private_t * dev_priv,
- const struct drm_clip_rect * pbox)
-{
- uint32_t scstart = dev_priv->state.s3d.new_scstart;
- uint32_t scend = dev_priv->state.s3d.new_scend;
- scstart = (scstart & ~SAVAGE_SCISSOR_MASK_S3D) |
- ((uint32_t) pbox->x1 & 0x000007ff) |
- (((uint32_t) pbox->y1 << 16) & 0x07ff0000);
- scend = (scend & ~SAVAGE_SCISSOR_MASK_S3D) |
- (((uint32_t) pbox->x2 - 1) & 0x000007ff) |
- ((((uint32_t) pbox->y2 - 1) << 16) & 0x07ff0000);
- if (scstart != dev_priv->state.s3d.scstart ||
- scend != dev_priv->state.s3d.scend) {
- DMA_LOCALS;
- BEGIN_DMA(4);
- DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
- DMA_SET_REGISTERS(SAVAGE_SCSTART_S3D, 2);
- DMA_WRITE(scstart);
- DMA_WRITE(scend);
- dev_priv->state.s3d.scstart = scstart;
- dev_priv->state.s3d.scend = scend;
- dev_priv->waiting = 1;
- DMA_COMMIT();
- }
-}
-
-void savage_emit_clip_rect_s4(drm_savage_private_t * dev_priv,
- const struct drm_clip_rect * pbox)
-{
- uint32_t drawctrl0 = dev_priv->state.s4.new_drawctrl0;
- uint32_t drawctrl1 = dev_priv->state.s4.new_drawctrl1;
- drawctrl0 = (drawctrl0 & ~SAVAGE_SCISSOR_MASK_S4) |
- ((uint32_t) pbox->x1 & 0x000007ff) |
- (((uint32_t) pbox->y1 << 12) & 0x00fff000);
- drawctrl1 = (drawctrl1 & ~SAVAGE_SCISSOR_MASK_S4) |
- (((uint32_t) pbox->x2 - 1) & 0x000007ff) |
- ((((uint32_t) pbox->y2 - 1) << 12) & 0x00fff000);
- if (drawctrl0 != dev_priv->state.s4.drawctrl0 ||
- drawctrl1 != dev_priv->state.s4.drawctrl1) {
- DMA_LOCALS;
- BEGIN_DMA(4);
- DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
- DMA_SET_REGISTERS(SAVAGE_DRAWCTRL0_S4, 2);
- DMA_WRITE(drawctrl0);
- DMA_WRITE(drawctrl1);
- dev_priv->state.s4.drawctrl0 = drawctrl0;
- dev_priv->state.s4.drawctrl1 = drawctrl1;
- dev_priv->waiting = 1;
- DMA_COMMIT();
- }
-}
-
-static int savage_verify_texaddr(drm_savage_private_t * dev_priv, int unit,
- uint32_t addr)
-{
- if ((addr & 6) != 2) { /* reserved bits */
- DRM_ERROR("bad texAddr%d %08x (reserved bits)\n", unit, addr);
- return -EINVAL;
- }
- if (!(addr & 1)) { /* local */
- addr &= ~7;
- if (addr < dev_priv->texture_offset ||
- addr >= dev_priv->texture_offset + dev_priv->texture_size) {
- DRM_ERROR
- ("bad texAddr%d %08x (local addr out of range)\n",
- unit, addr);
- return -EINVAL;
- }
- } else { /* AGP */
- if (!dev_priv->agp_textures) {
- DRM_ERROR("bad texAddr%d %08x (AGP not available)\n",
- unit, addr);
- return -EINVAL;
- }
- addr &= ~7;
- if (addr < dev_priv->agp_textures->offset ||
- addr >= (dev_priv->agp_textures->offset +
- dev_priv->agp_textures->size)) {
- DRM_ERROR
- ("bad texAddr%d %08x (AGP addr out of range)\n",
- unit, addr);
- return -EINVAL;
- }
- }
- return 0;
-}
-
-#define SAVE_STATE(reg,where) \
- if(start <= reg && start+count > reg) \
- dev_priv->state.where = regs[reg - start]
-#define SAVE_STATE_MASK(reg,where,mask) do { \
- if(start <= reg && start+count > reg) { \
- uint32_t tmp; \
- tmp = regs[reg - start]; \
- dev_priv->state.where = (tmp & (mask)) | \
- (dev_priv->state.where & ~(mask)); \
- } \
-} while (0)
-
-static int savage_verify_state_s3d(drm_savage_private_t * dev_priv,
- unsigned int start, unsigned int count,
- const uint32_t *regs)
-{
- if (start < SAVAGE_TEXPALADDR_S3D ||
- start + count - 1 > SAVAGE_DESTTEXRWWATERMARK_S3D) {
- DRM_ERROR("invalid register range (0x%04x-0x%04x)\n",
- start, start + count - 1);
- return -EINVAL;
- }
-
- SAVE_STATE_MASK(SAVAGE_SCSTART_S3D, s3d.new_scstart,
- ~SAVAGE_SCISSOR_MASK_S3D);
- SAVE_STATE_MASK(SAVAGE_SCEND_S3D, s3d.new_scend,
- ~SAVAGE_SCISSOR_MASK_S3D);
-
- /* if any texture regs were changed ... */
- if (start <= SAVAGE_TEXCTRL_S3D &&
- start + count > SAVAGE_TEXPALADDR_S3D) {
- /* ... check texture state */
- SAVE_STATE(SAVAGE_TEXCTRL_S3D, s3d.texctrl);
- SAVE_STATE(SAVAGE_TEXADDR_S3D, s3d.texaddr);
- if (dev_priv->state.s3d.texctrl & SAVAGE_TEXCTRL_TEXEN_MASK)
- return savage_verify_texaddr(dev_priv, 0,
- dev_priv->state.s3d.texaddr);
- }
-
- return 0;
-}
-
-static int savage_verify_state_s4(drm_savage_private_t * dev_priv,
- unsigned int start, unsigned int count,
- const uint32_t *regs)
-{
- int ret = 0;
-
- if (start < SAVAGE_DRAWLOCALCTRL_S4 ||
- start + count - 1 > SAVAGE_TEXBLENDCOLOR_S4) {
- DRM_ERROR("invalid register range (0x%04x-0x%04x)\n",
- start, start + count - 1);
- return -EINVAL;
- }
-
- SAVE_STATE_MASK(SAVAGE_DRAWCTRL0_S4, s4.new_drawctrl0,
- ~SAVAGE_SCISSOR_MASK_S4);
- SAVE_STATE_MASK(SAVAGE_DRAWCTRL1_S4, s4.new_drawctrl1,
- ~SAVAGE_SCISSOR_MASK_S4);
-
- /* if any texture regs were changed ... */
- if (start <= SAVAGE_TEXDESCR_S4 &&
- start + count > SAVAGE_TEXPALADDR_S4) {
- /* ... check texture state */
- SAVE_STATE(SAVAGE_TEXDESCR_S4, s4.texdescr);
- SAVE_STATE(SAVAGE_TEXADDR0_S4, s4.texaddr0);
- SAVE_STATE(SAVAGE_TEXADDR1_S4, s4.texaddr1);
- if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX0EN_MASK)
- ret |= savage_verify_texaddr(dev_priv, 0,
- dev_priv->state.s4.texaddr0);
- if (dev_priv->state.s4.texdescr & SAVAGE_TEXDESCR_TEX1EN_MASK)
- ret |= savage_verify_texaddr(dev_priv, 1,
- dev_priv->state.s4.texaddr1);
- }
-
- return ret;
-}
-
-#undef SAVE_STATE
-#undef SAVE_STATE_MASK
-
-static int savage_dispatch_state(drm_savage_private_t * dev_priv,
- const drm_savage_cmd_header_t * cmd_header,
- const uint32_t *regs)
-{
- unsigned int count = cmd_header->state.count;
- unsigned int start = cmd_header->state.start;
- unsigned int count2 = 0;
- unsigned int bci_size;
- int ret;
- DMA_LOCALS;
-
- if (!count)
- return 0;
-
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- ret = savage_verify_state_s3d(dev_priv, start, count, regs);
- if (ret != 0)
- return ret;
- /* scissor regs are emitted in savage_dispatch_draw */
- if (start < SAVAGE_SCSTART_S3D) {
- if (start + count > SAVAGE_SCEND_S3D + 1)
- count2 = count - (SAVAGE_SCEND_S3D + 1 - start);
- if (start + count > SAVAGE_SCSTART_S3D)
- count = SAVAGE_SCSTART_S3D - start;
- } else if (start <= SAVAGE_SCEND_S3D) {
- if (start + count > SAVAGE_SCEND_S3D + 1) {
- count -= SAVAGE_SCEND_S3D + 1 - start;
- start = SAVAGE_SCEND_S3D + 1;
- } else
- return 0;
- }
- } else {
- ret = savage_verify_state_s4(dev_priv, start, count, regs);
- if (ret != 0)
- return ret;
- /* scissor regs are emitted in savage_dispatch_draw */
- if (start < SAVAGE_DRAWCTRL0_S4) {
- if (start + count > SAVAGE_DRAWCTRL1_S4 + 1)
- count2 = count -
- (SAVAGE_DRAWCTRL1_S4 + 1 - start);
- if (start + count > SAVAGE_DRAWCTRL0_S4)
- count = SAVAGE_DRAWCTRL0_S4 - start;
- } else if (start <= SAVAGE_DRAWCTRL1_S4) {
- if (start + count > SAVAGE_DRAWCTRL1_S4 + 1) {
- count -= SAVAGE_DRAWCTRL1_S4 + 1 - start;
- start = SAVAGE_DRAWCTRL1_S4 + 1;
- } else
- return 0;
- }
- }
-
- bci_size = count + (count + 254) / 255 + count2 + (count2 + 254) / 255;
-
- if (cmd_header->state.global) {
- BEGIN_DMA(bci_size + 1);
- DMA_WRITE(BCI_CMD_WAIT | BCI_CMD_WAIT_3D);
- dev_priv->waiting = 1;
- } else {
- BEGIN_DMA(bci_size);
- }
-
- do {
- while (count > 0) {
- unsigned int n = count < 255 ? count : 255;
- DMA_SET_REGISTERS(start, n);
- DMA_COPY(regs, n);
- count -= n;
- start += n;
- regs += n;
- }
- start += 2;
- regs += 2;
- count = count2;
- count2 = 0;
- } while (count);
-
- DMA_COMMIT();
-
- return 0;
-}
-
-static int savage_dispatch_dma_prim(drm_savage_private_t * dev_priv,
- const drm_savage_cmd_header_t * cmd_header,
- const struct drm_buf * dmabuf)
-{
- unsigned char reorder = 0;
- unsigned int prim = cmd_header->prim.prim;
- unsigned int skip = cmd_header->prim.skip;
- unsigned int n = cmd_header->prim.count;
- unsigned int start = cmd_header->prim.start;
- unsigned int i;
- BCI_LOCALS;
-
- if (!dmabuf) {
- DRM_ERROR("called without dma buffers!\n");
- return -EINVAL;
- }
-
- if (!n)
- return 0;
-
- switch (prim) {
- case SAVAGE_PRIM_TRILIST_201:
- reorder = 1;
- prim = SAVAGE_PRIM_TRILIST;
- case SAVAGE_PRIM_TRILIST:
- if (n % 3 != 0) {
- DRM_ERROR("wrong number of vertices %u in TRILIST\n",
- n);
- return -EINVAL;
- }
- break;
- case SAVAGE_PRIM_TRISTRIP:
- case SAVAGE_PRIM_TRIFAN:
- if (n < 3) {
- DRM_ERROR
- ("wrong number of vertices %u in TRIFAN/STRIP\n",
- n);
- return -EINVAL;
- }
- break;
- default:
- DRM_ERROR("invalid primitive type %u\n", prim);
- return -EINVAL;
- }
-
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- if (skip != 0) {
- DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
- return -EINVAL;
- }
- } else {
- unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) -
- (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
- (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
- if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) {
- DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
- return -EINVAL;
- }
- if (reorder) {
- DRM_ERROR("TRILIST_201 used on Savage4 hardware\n");
- return -EINVAL;
- }
- }
-
- if (start + n > dmabuf->total / 32) {
- DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n",
- start, start + n - 1, dmabuf->total / 32);
- return -EINVAL;
- }
-
- /* Vertex DMA doesn't work with command DMA at the same time,
- * so we use BCI_... to submit commands here. Flush buffered
- * faked DMA first. */
- DMA_FLUSH();
-
- if (dmabuf->bus_address != dev_priv->state.common.vbaddr) {
- BEGIN_BCI(2);
- BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1);
- BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type);
- dev_priv->state.common.vbaddr = dmabuf->bus_address;
- }
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) {
- /* Workaround for what looks like a hardware bug. If a
- * WAIT_3D_IDLE was emitted some time before the
- * indexed drawing command then the engine will lock
- * up. There are two known workarounds:
- * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */
- BEGIN_BCI(63);
- for (i = 0; i < 63; ++i)
- BCI_WRITE(BCI_CMD_WAIT);
- dev_priv->waiting = 0;
- }
-
- prim <<= 25;
- while (n != 0) {
- /* Can emit up to 255 indices (85 triangles) at once. */
- unsigned int count = n > 255 ? 255 : n;
- if (reorder) {
- /* Need to reorder indices for correct flat
- * shading while preserving the clock sense
- * for correct culling. Only on Savage3D. */
- int reorder[3] = { -1, -1, -1 };
- reorder[start % 3] = 2;
-
- BEGIN_BCI((count + 1 + 1) / 2);
- BCI_DRAW_INDICES_S3D(count, prim, start + 2);
-
- for (i = start + 1; i + 1 < start + count; i += 2)
- BCI_WRITE((i + reorder[i % 3]) |
- ((i + 1 +
- reorder[(i + 1) % 3]) << 16));
- if (i < start + count)
- BCI_WRITE(i + reorder[i % 3]);
- } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- BEGIN_BCI((count + 1 + 1) / 2);
- BCI_DRAW_INDICES_S3D(count, prim, start);
-
- for (i = start + 1; i + 1 < start + count; i += 2)
- BCI_WRITE(i | ((i + 1) << 16));
- if (i < start + count)
- BCI_WRITE(i);
- } else {
- BEGIN_BCI((count + 2 + 1) / 2);
- BCI_DRAW_INDICES_S4(count, prim, skip);
-
- for (i = start; i + 1 < start + count; i += 2)
- BCI_WRITE(i | ((i + 1) << 16));
- if (i < start + count)
- BCI_WRITE(i);
- }
-
- start += count;
- n -= count;
-
- prim |= BCI_CMD_DRAW_CONT;
- }
-
- return 0;
-}
-
-static int savage_dispatch_vb_prim(drm_savage_private_t * dev_priv,
- const drm_savage_cmd_header_t * cmd_header,
- const uint32_t *vtxbuf, unsigned int vb_size,
- unsigned int vb_stride)
-{
- unsigned char reorder = 0;
- unsigned int prim = cmd_header->prim.prim;
- unsigned int skip = cmd_header->prim.skip;
- unsigned int n = cmd_header->prim.count;
- unsigned int start = cmd_header->prim.start;
- unsigned int vtx_size;
- unsigned int i;
- DMA_LOCALS;
-
- if (!n)
- return 0;
-
- switch (prim) {
- case SAVAGE_PRIM_TRILIST_201:
- reorder = 1;
- prim = SAVAGE_PRIM_TRILIST;
- case SAVAGE_PRIM_TRILIST:
- if (n % 3 != 0) {
- DRM_ERROR("wrong number of vertices %u in TRILIST\n",
- n);
- return -EINVAL;
- }
- break;
- case SAVAGE_PRIM_TRISTRIP:
- case SAVAGE_PRIM_TRIFAN:
- if (n < 3) {
- DRM_ERROR
- ("wrong number of vertices %u in TRIFAN/STRIP\n",
- n);
- return -EINVAL;
- }
- break;
- default:
- DRM_ERROR("invalid primitive type %u\n", prim);
- return -EINVAL;
- }
-
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- if (skip > SAVAGE_SKIP_ALL_S3D) {
- DRM_ERROR("invalid skip flags 0x%04x\n", skip);
- return -EINVAL;
- }
- vtx_size = 8; /* full vertex */
- } else {
- if (skip > SAVAGE_SKIP_ALL_S4) {
- DRM_ERROR("invalid skip flags 0x%04x\n", skip);
- return -EINVAL;
- }
- vtx_size = 10; /* full vertex */
- }
-
- vtx_size -= (skip & 1) + (skip >> 1 & 1) +
- (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) +
- (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1);
-
- if (vtx_size > vb_stride) {
- DRM_ERROR("vertex size greater than vb stride (%u > %u)\n",
- vtx_size, vb_stride);
- return -EINVAL;
- }
-
- if (start + n > vb_size / (vb_stride * 4)) {
- DRM_ERROR("vertex indices (%u-%u) out of range (0-%u)\n",
- start, start + n - 1, vb_size / (vb_stride * 4));
- return -EINVAL;
- }
-
- prim <<= 25;
- while (n != 0) {
- /* Can emit up to 255 vertices (85 triangles) at once. */
- unsigned int count = n > 255 ? 255 : n;
- if (reorder) {
- /* Need to reorder vertices for correct flat
- * shading while preserving the clock sense
- * for correct culling. Only on Savage3D. */
- int reorder[3] = { -1, -1, -1 };
- reorder[start % 3] = 2;
-
- BEGIN_DMA(count * vtx_size + 1);
- DMA_DRAW_PRIMITIVE(count, prim, skip);
-
- for (i = start; i < start + count; ++i) {
- unsigned int j = i + reorder[i % 3];
- DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
- }
-
- DMA_COMMIT();
- } else {
- BEGIN_DMA(count * vtx_size + 1);
- DMA_DRAW_PRIMITIVE(count, prim, skip);
-
- if (vb_stride == vtx_size) {
- DMA_COPY(&vtxbuf[vb_stride * start],
- vtx_size * count);
- } else {
- for (i = start; i < start + count; ++i) {
- DMA_COPY(&vtxbuf [vb_stride * i],
- vtx_size);
- }
- }
-
- DMA_COMMIT();
- }
-
- start += count;
- n -= count;
-
- prim |= BCI_CMD_DRAW_CONT;
- }
-
- return 0;
-}
-
-static int savage_dispatch_dma_idx(drm_savage_private_t * dev_priv,
- const drm_savage_cmd_header_t * cmd_header,
- const uint16_t *idx,
- const struct drm_buf * dmabuf)
-{
- unsigned char reorder = 0;
- unsigned int prim = cmd_header->idx.prim;
- unsigned int skip = cmd_header->idx.skip;
- unsigned int n = cmd_header->idx.count;
- unsigned int i;
- BCI_LOCALS;
-
- if (!dmabuf) {
- DRM_ERROR("called without dma buffers!\n");
- return -EINVAL;
- }
-
- if (!n)
- return 0;
-
- switch (prim) {
- case SAVAGE_PRIM_TRILIST_201:
- reorder = 1;
- prim = SAVAGE_PRIM_TRILIST;
- case SAVAGE_PRIM_TRILIST:
- if (n % 3 != 0) {
- DRM_ERROR("wrong number of indices %u in TRILIST\n", n);
- return -EINVAL;
- }
- break;
- case SAVAGE_PRIM_TRISTRIP:
- case SAVAGE_PRIM_TRIFAN:
- if (n < 3) {
- DRM_ERROR
- ("wrong number of indices %u in TRIFAN/STRIP\n", n);
- return -EINVAL;
- }
- break;
- default:
- DRM_ERROR("invalid primitive type %u\n", prim);
- return -EINVAL;
- }
-
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- if (skip != 0) {
- DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
- return -EINVAL;
- }
- } else {
- unsigned int size = 10 - (skip & 1) - (skip >> 1 & 1) -
- (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
- (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
- if (skip > SAVAGE_SKIP_ALL_S4 || size != 8) {
- DRM_ERROR("invalid skip flags 0x%04x for DMA\n", skip);
- return -EINVAL;
- }
- if (reorder) {
- DRM_ERROR("TRILIST_201 used on Savage4 hardware\n");
- return -EINVAL;
- }
- }
-
- /* Vertex DMA doesn't work with command DMA at the same time,
- * so we use BCI_... to submit commands here. Flush buffered
- * faked DMA first. */
- DMA_FLUSH();
-
- if (dmabuf->bus_address != dev_priv->state.common.vbaddr) {
- BEGIN_BCI(2);
- BCI_SET_REGISTERS(SAVAGE_VERTBUFADDR, 1);
- BCI_WRITE(dmabuf->bus_address | dev_priv->dma_type);
- dev_priv->state.common.vbaddr = dmabuf->bus_address;
- }
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset) && dev_priv->waiting) {
- /* Workaround for what looks like a hardware bug. If a
- * WAIT_3D_IDLE was emitted some time before the
- * indexed drawing command then the engine will lock
- * up. There are two known workarounds:
- * WAIT_IDLE_EMPTY or emit at least 63 NOPs. */
- BEGIN_BCI(63);
- for (i = 0; i < 63; ++i)
- BCI_WRITE(BCI_CMD_WAIT);
- dev_priv->waiting = 0;
- }
-
- prim <<= 25;
- while (n != 0) {
- /* Can emit up to 255 indices (85 triangles) at once. */
- unsigned int count = n > 255 ? 255 : n;
-
- /* check indices */
- for (i = 0; i < count; ++i) {
- if (idx[i] > dmabuf->total / 32) {
- DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
- i, idx[i], dmabuf->total / 32);
- return -EINVAL;
- }
- }
-
- if (reorder) {
- /* Need to reorder indices for correct flat
- * shading while preserving the clock sense
- * for correct culling. Only on Savage3D. */
- int reorder[3] = { 2, -1, -1 };
-
- BEGIN_BCI((count + 1 + 1) / 2);
- BCI_DRAW_INDICES_S3D(count, prim, idx[2]);
-
- for (i = 1; i + 1 < count; i += 2)
- BCI_WRITE(idx[i + reorder[i % 3]] |
- (idx[i + 1 +
- reorder[(i + 1) % 3]] << 16));
- if (i < count)
- BCI_WRITE(idx[i + reorder[i % 3]]);
- } else if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- BEGIN_BCI((count + 1 + 1) / 2);
- BCI_DRAW_INDICES_S3D(count, prim, idx[0]);
-
- for (i = 1; i + 1 < count; i += 2)
- BCI_WRITE(idx[i] | (idx[i + 1] << 16));
- if (i < count)
- BCI_WRITE(idx[i]);
- } else {
- BEGIN_BCI((count + 2 + 1) / 2);
- BCI_DRAW_INDICES_S4(count, prim, skip);
-
- for (i = 0; i + 1 < count; i += 2)
- BCI_WRITE(idx[i] | (idx[i + 1] << 16));
- if (i < count)
- BCI_WRITE(idx[i]);
- }
-
- idx += count;
- n -= count;
-
- prim |= BCI_CMD_DRAW_CONT;
- }
-
- return 0;
-}
-
-static int savage_dispatch_vb_idx(drm_savage_private_t * dev_priv,
- const drm_savage_cmd_header_t * cmd_header,
- const uint16_t *idx,
- const uint32_t *vtxbuf,
- unsigned int vb_size, unsigned int vb_stride)
-{
- unsigned char reorder = 0;
- unsigned int prim = cmd_header->idx.prim;
- unsigned int skip = cmd_header->idx.skip;
- unsigned int n = cmd_header->idx.count;
- unsigned int vtx_size;
- unsigned int i;
- DMA_LOCALS;
-
- if (!n)
- return 0;
-
- switch (prim) {
- case SAVAGE_PRIM_TRILIST_201:
- reorder = 1;
- prim = SAVAGE_PRIM_TRILIST;
- case SAVAGE_PRIM_TRILIST:
- if (n % 3 != 0) {
- DRM_ERROR("wrong number of indices %u in TRILIST\n", n);
- return -EINVAL;
- }
- break;
- case SAVAGE_PRIM_TRISTRIP:
- case SAVAGE_PRIM_TRIFAN:
- if (n < 3) {
- DRM_ERROR
- ("wrong number of indices %u in TRIFAN/STRIP\n", n);
- return -EINVAL;
- }
- break;
- default:
- DRM_ERROR("invalid primitive type %u\n", prim);
- return -EINVAL;
- }
-
- if (S3_SAVAGE3D_SERIES(dev_priv->chipset)) {
- if (skip > SAVAGE_SKIP_ALL_S3D) {
- DRM_ERROR("invalid skip flags 0x%04x\n", skip);
- return -EINVAL;
- }
- vtx_size = 8; /* full vertex */
- } else {
- if (skip > SAVAGE_SKIP_ALL_S4) {
- DRM_ERROR("invalid skip flags 0x%04x\n", skip);
- return -EINVAL;
- }
- vtx_size = 10; /* full vertex */
- }
-
- vtx_size -= (skip & 1) + (skip >> 1 & 1) +
- (skip >> 2 & 1) + (skip >> 3 & 1) + (skip >> 4 & 1) +
- (skip >> 5 & 1) + (skip >> 6 & 1) + (skip >> 7 & 1);
-
- if (vtx_size > vb_stride) {
- DRM_ERROR("vertex size greater than vb stride (%u > %u)\n",
- vtx_size, vb_stride);
- return -EINVAL;
- }
-
- prim <<= 25;
- while (n != 0) {
- /* Can emit up to 255 vertices (85 triangles) at once. */
- unsigned int count = n > 255 ? 255 : n;
-
- /* Check indices */
- for (i = 0; i < count; ++i) {
- if (idx[i] > vb_size / (vb_stride * 4)) {
- DRM_ERROR("idx[%u]=%u out of range (0-%u)\n",
- i, idx[i], vb_size / (vb_stride * 4));
- return -EINVAL;
- }
- }
-
- if (reorder) {
- /* Need to reorder vertices for correct flat
- * shading while preserving the clock sense
- * for correct culling. Only on Savage3D. */
- int reorder[3] = { 2, -1, -1 };
-
- BEGIN_DMA(count * vtx_size + 1);
- DMA_DRAW_PRIMITIVE(count, prim, skip);
-
- for (i = 0; i < count; ++i) {
- unsigned int j = idx[i + reorder[i % 3]];
- DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
- }
-
- DMA_COMMIT();
- } else {
- BEGIN_DMA(count * vtx_size + 1);
- DMA_DRAW_PRIMITIVE(count, prim, skip);
-
- for (i = 0; i < count; ++i) {
- unsigned int j = idx[i];
- DMA_COPY(&vtxbuf[vb_stride * j], vtx_size);
- }
-
- DMA_COMMIT();
- }
-
- idx += count;
- n -= count;
-
- prim |= BCI_CMD_DRAW_CONT;
- }
-
- return 0;
-}
-
-static int savage_dispatch_clear(drm_savage_private_t * dev_priv,
- const drm_savage_cmd_header_t * cmd_header,
- const drm_savage_cmd_header_t *data,
- unsigned int nbox,
- const struct drm_clip_rect *boxes)
-{
- unsigned int flags = cmd_header->clear0.flags;
- unsigned int clear_cmd;
- unsigned int i, nbufs;
- DMA_LOCALS;
-
- if (nbox == 0)
- return 0;
-
- clear_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
- BCI_CMD_SEND_COLOR | BCI_CMD_DEST_PBD_NEW;
- BCI_CMD_SET_ROP(clear_cmd, 0xCC);
-
- nbufs = ((flags & SAVAGE_FRONT) ? 1 : 0) +
- ((flags & SAVAGE_BACK) ? 1 : 0) + ((flags & SAVAGE_DEPTH) ? 1 : 0);
- if (nbufs == 0)
- return 0;
-
- if (data->clear1.mask != 0xffffffff) {
- /* set mask */
- BEGIN_DMA(2);
- DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
- DMA_WRITE(data->clear1.mask);
- DMA_COMMIT();
- }
- for (i = 0; i < nbox; ++i) {
- unsigned int x, y, w, h;
- unsigned int buf;
- x = boxes[i].x1, y = boxes[i].y1;
- w = boxes[i].x2 - boxes[i].x1;
- h = boxes[i].y2 - boxes[i].y1;
- BEGIN_DMA(nbufs * 6);
- for (buf = SAVAGE_FRONT; buf <= SAVAGE_DEPTH; buf <<= 1) {
- if (!(flags & buf))
- continue;
- DMA_WRITE(clear_cmd);
- switch (buf) {
- case SAVAGE_FRONT:
- DMA_WRITE(dev_priv->front_offset);
- DMA_WRITE(dev_priv->front_bd);
- break;
- case SAVAGE_BACK:
- DMA_WRITE(dev_priv->back_offset);
- DMA_WRITE(dev_priv->back_bd);
- break;
- case SAVAGE_DEPTH:
- DMA_WRITE(dev_priv->depth_offset);
- DMA_WRITE(dev_priv->depth_bd);
- break;
- }
- DMA_WRITE(data->clear1.value);
- DMA_WRITE(BCI_X_Y(x, y));
- DMA_WRITE(BCI_W_H(w, h));
- }
- DMA_COMMIT();
- }
- if (data->clear1.mask != 0xffffffff) {
- /* reset mask */
- BEGIN_DMA(2);
- DMA_SET_REGISTERS(SAVAGE_BITPLANEWTMASK, 1);
- DMA_WRITE(0xffffffff);
- DMA_COMMIT();
- }
-
- return 0;
-}
-
-static int savage_dispatch_swap(drm_savage_private_t * dev_priv,
- unsigned int nbox, const struct drm_clip_rect *boxes)
-{
- unsigned int swap_cmd;
- unsigned int i;
- DMA_LOCALS;
-
- if (nbox == 0)
- return 0;
-
- swap_cmd = BCI_CMD_RECT | BCI_CMD_RECT_XP | BCI_CMD_RECT_YP |
- BCI_CMD_SRC_PBD_COLOR_NEW | BCI_CMD_DEST_GBD;
- BCI_CMD_SET_ROP(swap_cmd, 0xCC);
-
- for (i = 0; i < nbox; ++i) {
- BEGIN_DMA(6);
- DMA_WRITE(swap_cmd);
- DMA_WRITE(dev_priv->back_offset);
- DMA_WRITE(dev_priv->back_bd);
- DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1));
- DMA_WRITE(BCI_X_Y(boxes[i].x1, boxes[i].y1));
- DMA_WRITE(BCI_W_H(boxes[i].x2 - boxes[i].x1,
- boxes[i].y2 - boxes[i].y1));
- DMA_COMMIT();
- }
-
- return 0;
-}
-
-static int savage_dispatch_draw(drm_savage_private_t * dev_priv,
- const drm_savage_cmd_header_t *start,
- const drm_savage_cmd_header_t *end,
- const struct drm_buf * dmabuf,
- const unsigned int *vtxbuf,
- unsigned int vb_size, unsigned int vb_stride,
- unsigned int nbox,
- const struct drm_clip_rect *boxes)
-{
- unsigned int i, j;
- int ret;
-
- for (i = 0; i < nbox; ++i) {
- const drm_savage_cmd_header_t *cmdbuf;
- dev_priv->emit_clip_rect(dev_priv, &boxes[i]);
-
- cmdbuf = start;
- while (cmdbuf < end) {
- drm_savage_cmd_header_t cmd_header;
- cmd_header = *cmdbuf;
- cmdbuf++;
- switch (cmd_header.cmd.cmd) {
- case SAVAGE_CMD_DMA_PRIM:
- ret = savage_dispatch_dma_prim(
- dev_priv, &cmd_header, dmabuf);
- break;
- case SAVAGE_CMD_VB_PRIM:
- ret = savage_dispatch_vb_prim(
- dev_priv, &cmd_header,
- vtxbuf, vb_size, vb_stride);
- break;
- case SAVAGE_CMD_DMA_IDX:
- j = (cmd_header.idx.count + 3) / 4;
- /* j was check in savage_bci_cmdbuf */
- ret = savage_dispatch_dma_idx(dev_priv,
- &cmd_header, (const uint16_t *)cmdbuf,
- dmabuf);
- cmdbuf += j;
- break;
- case SAVAGE_CMD_VB_IDX:
- j = (cmd_header.idx.count + 3) / 4;
- /* j was check in savage_bci_cmdbuf */
- ret = savage_dispatch_vb_idx(dev_priv,
- &cmd_header, (const uint16_t *)cmdbuf,
- (const uint32_t *)vtxbuf, vb_size,
- vb_stride);
- cmdbuf += j;
- break;
- default:
- /* What's the best return code? EFAULT? */
- DRM_ERROR("IMPLEMENTATION ERROR: "
- "non-drawing-command %d\n",
- cmd_header.cmd.cmd);
- return -EINVAL;
- }
-
- if (ret != 0)
- return ret;
- }
- }
-
- return 0;
-}
-
-int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- drm_savage_private_t *dev_priv = dev->dev_private;
- struct drm_device_dma *dma = dev->dma;
- struct drm_buf *dmabuf;
- drm_savage_cmdbuf_t *cmdbuf = data;
- drm_savage_cmd_header_t *kcmd_addr = NULL;
- drm_savage_cmd_header_t *first_draw_cmd;
- unsigned int *kvb_addr = NULL;
- struct drm_clip_rect *kbox_addr = NULL;
- unsigned int i, j;
- int ret = 0;
-
- DRM_DEBUG("\n");
-
- LOCK_TEST_WITH_RETURN(dev, file_priv);
-
- if (dma && dma->buflist) {
- if (cmdbuf->dma_idx > dma->buf_count) {
- DRM_ERROR
- ("vertex buffer index %u out of range (0-%u)\n",
- cmdbuf->dma_idx, dma->buf_count - 1);
- return -EINVAL;
- }
- dmabuf = dma->buflist[cmdbuf->dma_idx];
- } else {
- dmabuf = NULL;
- }
-
- /* Copy the user buffers into kernel temporary areas. This hasn't been
- * a performance loss compared to VERIFYAREA_READ/
- * COPY_FROM_USER_UNCHECKED when done in other drivers, and is correct
- * for locking on FreeBSD.
- */
- if (cmdbuf->size) {
- kcmd_addr = drm_alloc(cmdbuf->size * 8, DRM_MEM_DRIVER);
- if (kcmd_addr == NULL)
- return -ENOMEM;
-
- if (DRM_COPY_FROM_USER(kcmd_addr, cmdbuf->cmd_addr,
- cmdbuf->size * 8))
- {
- drm_free(kcmd_addr, cmdbuf->size * 8, DRM_MEM_DRIVER);
- return -EFAULT;
- }
- cmdbuf->cmd_addr = kcmd_addr;
- }
- if (cmdbuf->vb_size) {
- kvb_addr = drm_alloc(cmdbuf->vb_size, DRM_MEM_DRIVER);
- if (kvb_addr == NULL) {
- ret = -ENOMEM;
- goto done;
- }
-
- if (DRM_COPY_FROM_USER(kvb_addr, cmdbuf->vb_addr,
- cmdbuf->vb_size)) {
- ret = -EFAULT;
- goto done;
- }
- cmdbuf->vb_addr = kvb_addr;
- }
- if (cmdbuf->nbox) {
- kbox_addr = drm_alloc(cmdbuf->nbox * sizeof(struct drm_clip_rect),
- DRM_MEM_DRIVER);
- if (kbox_addr == NULL) {
- ret = -ENOMEM;
- goto done;
- }
-
- if (DRM_COPY_FROM_USER(kbox_addr, cmdbuf->box_addr,
- cmdbuf->nbox * sizeof(struct drm_clip_rect))) {
- ret = -EFAULT;
- goto done;
- }
- cmdbuf->box_addr = kbox_addr;
- }
-
- /* Make sure writes to DMA buffers are finished before sending
- * DMA commands to the graphics hardware. */
- DRM_MEMORYBARRIER();
-
- /* Coming from user space. Don't know if the Xserver has
- * emitted wait commands. Assuming the worst. */
- dev_priv->waiting = 1;
-
- i = 0;
- first_draw_cmd = NULL;
- while (i < cmdbuf->size) {
- drm_savage_cmd_header_t cmd_header;
- cmd_header = *(drm_savage_cmd_header_t *)cmdbuf->cmd_addr;
- cmdbuf->cmd_addr++;
- i++;
-
- /* Group drawing commands with same state to minimize
- * iterations over clip rects. */
- j = 0;
- switch (cmd_header.cmd.cmd) {
- case SAVAGE_CMD_DMA_IDX:
- case SAVAGE_CMD_VB_IDX:
- j = (cmd_header.idx.count + 3) / 4;
- if (i + j > cmdbuf->size) {
- DRM_ERROR("indexed drawing command extends "
- "beyond end of command buffer\n");
- DMA_FLUSH();
- return -EINVAL;
- }
- /* fall through */
- case SAVAGE_CMD_DMA_PRIM:
- case SAVAGE_CMD_VB_PRIM:
- if (!first_draw_cmd)
- first_draw_cmd = cmdbuf->cmd_addr - 1;
- cmdbuf->cmd_addr += j;
- i += j;
- break;
- default:
- if (first_draw_cmd) {
- ret = savage_dispatch_draw(
- dev_priv, first_draw_cmd,
- cmdbuf->cmd_addr - 1,
- dmabuf, cmdbuf->vb_addr, cmdbuf->vb_size,
- cmdbuf->vb_stride,
- cmdbuf->nbox, cmdbuf->box_addr);
- if (ret != 0)
- return ret;
- first_draw_cmd = NULL;
- }
- }
- if (first_draw_cmd)
- continue;
-
- switch (cmd_header.cmd.cmd) {
- case SAVAGE_CMD_STATE:
- j = (cmd_header.state.count + 1) / 2;
- if (i + j > cmdbuf->size) {
- DRM_ERROR("command SAVAGE_CMD_STATE extends "
- "beyond end of command buffer\n");
- DMA_FLUSH();
- ret = -EINVAL;
- goto done;
- }
- ret = savage_dispatch_state(dev_priv, &cmd_header,
- (const uint32_t *)cmdbuf->cmd_addr);
- cmdbuf->cmd_addr += j;
- i += j;
- break;
- case SAVAGE_CMD_CLEAR:
- if (i + 1 > cmdbuf->size) {
- DRM_ERROR("command SAVAGE_CMD_CLEAR extends "
- "beyond end of command buffer\n");
- DMA_FLUSH();
- ret = -EINVAL;
- goto done;
- }
- ret = savage_dispatch_clear(dev_priv, &cmd_header,
- cmdbuf->cmd_addr,
- cmdbuf->nbox,
- cmdbuf->box_addr);
- cmdbuf->cmd_addr++;
- i++;
- break;
- case SAVAGE_CMD_SWAP:
- ret = savage_dispatch_swap(dev_priv, cmdbuf->nbox,
- cmdbuf->box_addr);
- break;
- default:
- DRM_ERROR("invalid command 0x%x\n",
- cmd_header.cmd.cmd);
- DMA_FLUSH();
- ret = -EINVAL;
- goto done;
- }
-
- if (ret != 0) {
- DMA_FLUSH();
- goto done;
- }
- }
-
- if (first_draw_cmd) {
- ret = savage_dispatch_draw (
- dev_priv, first_draw_cmd, cmdbuf->cmd_addr, dmabuf,
- cmdbuf->vb_addr, cmdbuf->vb_size, cmdbuf->vb_stride,
- cmdbuf->nbox, cmdbuf->box_addr);
- if (ret != 0) {
- DMA_FLUSH();
- goto done;
- }
- }
-
- DMA_FLUSH();
-
- if (dmabuf && cmdbuf->discard) {
- drm_savage_buf_priv_t *buf_priv = dmabuf->dev_private;
- uint16_t event;
- event = savage_bci_emit_event(dev_priv, SAVAGE_WAIT_3D);
- SET_AGE(&buf_priv->age, event, dev_priv->event_wrap);
- savage_freelist_put(dev, dmabuf);
- }
-
-done:
- /* If we didn't need to allocate them, these'll be NULL */
- drm_free(kcmd_addr, cmdbuf->size * 8, DRM_MEM_DRIVER);
- drm_free(kvb_addr, cmdbuf->vb_size, DRM_MEM_DRIVER);
- drm_free(kbox_addr, cmdbuf->nbox * sizeof(struct drm_clip_rect),
- DRM_MEM_DRIVER);
-
- return ret;
-}