diff options
Diffstat (limited to 'drivers/char/drm/savage_state.c')
| -rw-r--r-- | drivers/char/drm/savage_state.c | 1163 |
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; -} |