diff options
Diffstat (limited to 'drivers/gpu/drm/savage/savage_state.c')
| -rw-r--r-- | drivers/gpu/drm/savage/savage_state.c | 1163 |
1 files changed, 1163 insertions, 0 deletions
diff --git a/drivers/gpu/drm/savage/savage_state.c b/drivers/gpu/drm/savage/savage_state.c new file mode 100644 index 0000000..5f6238f --- /dev/null +++ b/drivers/gpu/drm/savage/savage_state.c @@ -0,0 +1,1163 @@ +/* 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; +} |
