diff options
Diffstat (limited to 'nx-X11/extras/drm/shared-core/mach64_state.c')
| -rw-r--r-- | nx-X11/extras/drm/shared-core/mach64_state.c | 917 |
1 files changed, 917 insertions, 0 deletions
diff --git a/nx-X11/extras/drm/shared-core/mach64_state.c b/nx-X11/extras/drm/shared-core/mach64_state.c new file mode 100644 index 000000000..964d4c580 --- /dev/null +++ b/nx-X11/extras/drm/shared-core/mach64_state.c @@ -0,0 +1,917 @@ +/* mach64_state.c -- State support for mach64 (Rage Pro) driver -*- linux-c -*- + * Created: Sun Dec 03 19:20:26 2000 by gareth@valinux.com + * + * Copyright 2000 Gareth Hughes + * Copyright 2002-2003 Leif Delgass + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT OWNER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: + * Gareth Hughes <gareth@valinux.com> + * Leif Delgass <ldelgass@retinalburn.net> + * Jos�Fonseca <j_r_fonseca@yahoo.co.uk> + */ + +#include "drmP.h" +#include "drm.h" +#include "mach64_drm.h" +#include "mach64_drv.h" + +/* Interface history: + * + * 1.0 - Initial mach64 DRM + * + */ +drm_ioctl_desc_t mach64_ioctls[] = { + [DRM_IOCTL_NR(DRM_MACH64_INIT)] = {mach64_dma_init, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY}, + [DRM_IOCTL_NR(DRM_MACH64_CLEAR)] = {mach64_dma_clear, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_MACH64_SWAP)] = {mach64_dma_swap, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_MACH64_IDLE)] = {mach64_dma_idle, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_MACH64_RESET)] = {mach64_engine_reset, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_MACH64_VERTEX)] = {mach64_dma_vertex, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_MACH64_BLIT)] = {mach64_dma_blit, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_MACH64_FLUSH)] = {mach64_dma_flush, DRM_AUTH}, + [DRM_IOCTL_NR(DRM_MACH64_GETPARAM)] = {mach64_get_param, DRM_AUTH}, +}; + +int mach64_max_ioctl = DRM_ARRAY_SIZE(mach64_ioctls); + +/* ================================================================ + * DMA hardware state programming functions + */ + +static void mach64_print_dirty(const char *msg, unsigned int flags) +{ + DRM_DEBUG("%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s\n", + msg, + flags, + (flags & MACH64_UPLOAD_DST_OFF_PITCH) ? "dst_off_pitch, " : + "", + (flags & MACH64_UPLOAD_Z_ALPHA_CNTL) ? "z_alpha_cntl, " : "", + (flags & MACH64_UPLOAD_SCALE_3D_CNTL) ? "scale_3d_cntl, " : + "", (flags & MACH64_UPLOAD_DP_FOG_CLR) ? "dp_fog_clr, " : "", + (flags & MACH64_UPLOAD_DP_WRITE_MASK) ? "dp_write_mask, " : + "", + (flags & MACH64_UPLOAD_DP_PIX_WIDTH) ? "dp_pix_width, " : "", + (flags & MACH64_UPLOAD_SETUP_CNTL) ? "setup_cntl, " : "", + (flags & MACH64_UPLOAD_MISC) ? "misc, " : "", + (flags & MACH64_UPLOAD_TEXTURE) ? "texture, " : "", + (flags & MACH64_UPLOAD_TEX0IMAGE) ? "tex0 image, " : "", + (flags & MACH64_UPLOAD_TEX1IMAGE) ? "tex1 image, " : "", + (flags & MACH64_UPLOAD_CLIPRECTS) ? "cliprects, " : ""); +} + +/* Mach64 doesn't have hardware cliprects, just one hardware scissor, + * so the GL scissor is intersected with each cliprect here + */ +/* This function returns 0 on success, 1 for no intersection, and + * negative for an error + */ +static int mach64_emit_cliprect(DRMFILE filp, drm_mach64_private_t * dev_priv, + drm_clip_rect_t * box) +{ + u32 sc_left_right, sc_top_bottom; + drm_clip_rect_t scissor; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mach64_context_regs_t *regs = &sarea_priv->context_state; + DMALOCALS; + + DRM_DEBUG("%s: box=%p\n", __FUNCTION__, box); + + /* Get GL scissor */ + /* FIXME: store scissor in SAREA as a cliprect instead of in + * hardware format, or do intersection client-side + */ + scissor.x1 = regs->sc_left_right & 0xffff; + scissor.x2 = (regs->sc_left_right & 0xffff0000) >> 16; + scissor.y1 = regs->sc_top_bottom & 0xffff; + scissor.y2 = (regs->sc_top_bottom & 0xffff0000) >> 16; + + /* Intersect GL scissor with cliprect */ + if (box->x1 > scissor.x1) + scissor.x1 = box->x1; + if (box->y1 > scissor.y1) + scissor.y1 = box->y1; + if (box->x2 < scissor.x2) + scissor.x2 = box->x2; + if (box->y2 < scissor.y2) + scissor.y2 = box->y2; + /* positive return means skip */ + if (scissor.x1 >= scissor.x2) + return 1; + if (scissor.y1 >= scissor.y2) + return 1; + + DMAGETPTR(filp, dev_priv, 2); /* returns on failure to get buffer */ + + sc_left_right = ((scissor.x1 << 0) | (scissor.x2 << 16)); + sc_top_bottom = ((scissor.y1 << 0) | (scissor.y2 << 16)); + + DMAOUTREG(MACH64_SC_LEFT_RIGHT, sc_left_right); + DMAOUTREG(MACH64_SC_TOP_BOTTOM, sc_top_bottom); + + DMAADVANCE(dev_priv, 1); + + return 0; +} + +static __inline__ int mach64_emit_state(DRMFILE filp, + drm_mach64_private_t * dev_priv) +{ + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mach64_context_regs_t *regs = &sarea_priv->context_state; + unsigned int dirty = sarea_priv->dirty; + u32 offset = ((regs->tex_size_pitch & 0xf0) >> 2); + DMALOCALS; + + if (MACH64_VERBOSE) { + mach64_print_dirty(__FUNCTION__, dirty); + } else { + DRM_DEBUG("%s: dirty=0x%08x\n", __FUNCTION__, dirty); + } + + DMAGETPTR(filp, dev_priv, 17); /* returns on failure to get buffer */ + + if (dirty & MACH64_UPLOAD_MISC) { + DMAOUTREG(MACH64_DP_MIX, regs->dp_mix); + DMAOUTREG(MACH64_DP_SRC, regs->dp_src); + DMAOUTREG(MACH64_CLR_CMP_CNTL, regs->clr_cmp_cntl); + DMAOUTREG(MACH64_GUI_TRAJ_CNTL, regs->gui_traj_cntl); + sarea_priv->dirty &= ~MACH64_UPLOAD_MISC; + } + + if (dirty & MACH64_UPLOAD_DST_OFF_PITCH) { + DMAOUTREG(MACH64_DST_OFF_PITCH, regs->dst_off_pitch); + sarea_priv->dirty &= ~MACH64_UPLOAD_DST_OFF_PITCH; + } + if (dirty & MACH64_UPLOAD_Z_OFF_PITCH) { + DMAOUTREG(MACH64_Z_OFF_PITCH, regs->z_off_pitch); + sarea_priv->dirty &= ~MACH64_UPLOAD_Z_OFF_PITCH; + } + if (dirty & MACH64_UPLOAD_Z_ALPHA_CNTL) { + DMAOUTREG(MACH64_Z_CNTL, regs->z_cntl); + DMAOUTREG(MACH64_ALPHA_TST_CNTL, regs->alpha_tst_cntl); + sarea_priv->dirty &= ~MACH64_UPLOAD_Z_ALPHA_CNTL; + } + if (dirty & MACH64_UPLOAD_SCALE_3D_CNTL) { + DMAOUTREG(MACH64_SCALE_3D_CNTL, regs->scale_3d_cntl); + sarea_priv->dirty &= ~MACH64_UPLOAD_SCALE_3D_CNTL; + } + if (dirty & MACH64_UPLOAD_DP_FOG_CLR) { + DMAOUTREG(MACH64_DP_FOG_CLR, regs->dp_fog_clr); + sarea_priv->dirty &= ~MACH64_UPLOAD_DP_FOG_CLR; + } + if (dirty & MACH64_UPLOAD_DP_WRITE_MASK) { + DMAOUTREG(MACH64_DP_WRITE_MASK, regs->dp_write_mask); + sarea_priv->dirty &= ~MACH64_UPLOAD_DP_WRITE_MASK; + } + if (dirty & MACH64_UPLOAD_DP_PIX_WIDTH) { + DMAOUTREG(MACH64_DP_PIX_WIDTH, regs->dp_pix_width); + sarea_priv->dirty &= ~MACH64_UPLOAD_DP_PIX_WIDTH; + } + if (dirty & MACH64_UPLOAD_SETUP_CNTL) { + DMAOUTREG(MACH64_SETUP_CNTL, regs->setup_cntl); + sarea_priv->dirty &= ~MACH64_UPLOAD_SETUP_CNTL; + } + + if (dirty & MACH64_UPLOAD_TEXTURE) { + DMAOUTREG(MACH64_TEX_SIZE_PITCH, regs->tex_size_pitch); + DMAOUTREG(MACH64_TEX_CNTL, regs->tex_cntl); + DMAOUTREG(MACH64_SECONDARY_TEX_OFF, regs->secondary_tex_off); + DMAOUTREG(MACH64_TEX_0_OFF + offset, regs->tex_offset); + sarea_priv->dirty &= ~MACH64_UPLOAD_TEXTURE; + } + + DMAADVANCE(dev_priv, 1); + + sarea_priv->dirty &= MACH64_UPLOAD_CLIPRECTS; + + return 0; + +} + +/* ================================================================ + * DMA command dispatch functions + */ + +static int mach64_dma_dispatch_clear(DRMFILE filp, drm_device_t * dev, + unsigned int flags, + int cx, int cy, int cw, int ch, + unsigned int clear_color, + unsigned int clear_depth) +{ + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mach64_context_regs_t *ctx = &sarea_priv->context_state; + int nbox = sarea_priv->nbox; + drm_clip_rect_t *pbox = sarea_priv->boxes; + u32 fb_bpp, depth_bpp; + int i; + DMALOCALS; + + DRM_DEBUG("%s\n", __FUNCTION__); + + switch (dev_priv->fb_bpp) { + case 16: + fb_bpp = MACH64_DATATYPE_RGB565; + break; + case 32: + fb_bpp = MACH64_DATATYPE_ARGB8888; + break; + default: + return DRM_ERR(EINVAL); + } + switch (dev_priv->depth_bpp) { + case 16: + depth_bpp = MACH64_DATATYPE_RGB565; + break; + case 24: + case 32: + depth_bpp = MACH64_DATATYPE_ARGB8888; + break; + default: + return DRM_ERR(EINVAL); + } + + if (!nbox) + return 0; + + DMAGETPTR(filp, dev_priv, nbox * 31); /* returns on failure to get buffer */ + + for (i = 0; i < nbox; i++) { + int x = pbox[i].x1; + int y = pbox[i].y1; + int w = pbox[i].x2 - x; + int h = pbox[i].y2 - y; + + DRM_DEBUG("dispatch clear %d,%d-%d,%d flags 0x%x\n", + pbox[i].x1, pbox[i].y1, + pbox[i].x2, pbox[i].y2, flags); + + if (flags & (MACH64_FRONT | MACH64_BACK)) { + /* Setup for color buffer clears + */ + + DMAOUTREG(MACH64_Z_CNTL, 0); + DMAOUTREG(MACH64_SCALE_3D_CNTL, 0); + + DMAOUTREG(MACH64_SC_LEFT_RIGHT, ctx->sc_left_right); + DMAOUTREG(MACH64_SC_TOP_BOTTOM, ctx->sc_top_bottom); + + DMAOUTREG(MACH64_CLR_CMP_CNTL, 0); + DMAOUTREG(MACH64_GUI_TRAJ_CNTL, + (MACH64_DST_X_LEFT_TO_RIGHT | + MACH64_DST_Y_TOP_TO_BOTTOM)); + + DMAOUTREG(MACH64_DP_PIX_WIDTH, ((fb_bpp << 0) | + (fb_bpp << 4) | + (fb_bpp << 8) | + (fb_bpp << 16) | + (fb_bpp << 28))); + + DMAOUTREG(MACH64_DP_FRGD_CLR, clear_color); + DMAOUTREG(MACH64_DP_WRITE_MASK, ctx->dp_write_mask); + DMAOUTREG(MACH64_DP_MIX, (MACH64_BKGD_MIX_D | + MACH64_FRGD_MIX_S)); + DMAOUTREG(MACH64_DP_SRC, (MACH64_BKGD_SRC_FRGD_CLR | + MACH64_FRGD_SRC_FRGD_CLR | + MACH64_MONO_SRC_ONE)); + + } + + if (flags & MACH64_FRONT) { + + DMAOUTREG(MACH64_DST_OFF_PITCH, + dev_priv->front_offset_pitch); + DMAOUTREG(MACH64_DST_X_Y, (y << 16) | x); + DMAOUTREG(MACH64_DST_WIDTH_HEIGHT, (h << 16) | w); + + } + + if (flags & MACH64_BACK) { + + DMAOUTREG(MACH64_DST_OFF_PITCH, + dev_priv->back_offset_pitch); + DMAOUTREG(MACH64_DST_X_Y, (y << 16) | x); + DMAOUTREG(MACH64_DST_WIDTH_HEIGHT, (h << 16) | w); + + } + + if (flags & MACH64_DEPTH) { + /* Setup for depth buffer clear + */ + DMAOUTREG(MACH64_Z_CNTL, 0); + DMAOUTREG(MACH64_SCALE_3D_CNTL, 0); + + DMAOUTREG(MACH64_SC_LEFT_RIGHT, ctx->sc_left_right); + DMAOUTREG(MACH64_SC_TOP_BOTTOM, ctx->sc_top_bottom); + + DMAOUTREG(MACH64_CLR_CMP_CNTL, 0); + DMAOUTREG(MACH64_GUI_TRAJ_CNTL, + (MACH64_DST_X_LEFT_TO_RIGHT | + MACH64_DST_Y_TOP_TO_BOTTOM)); + + DMAOUTREG(MACH64_DP_PIX_WIDTH, ((depth_bpp << 0) | + (depth_bpp << 4) | + (depth_bpp << 8) | + (depth_bpp << 16) | + (depth_bpp << 28))); + + DMAOUTREG(MACH64_DP_FRGD_CLR, clear_depth); + DMAOUTREG(MACH64_DP_WRITE_MASK, 0xffffffff); + DMAOUTREG(MACH64_DP_MIX, (MACH64_BKGD_MIX_D | + MACH64_FRGD_MIX_S)); + DMAOUTREG(MACH64_DP_SRC, (MACH64_BKGD_SRC_FRGD_CLR | + MACH64_FRGD_SRC_FRGD_CLR | + MACH64_MONO_SRC_ONE)); + + DMAOUTREG(MACH64_DST_OFF_PITCH, + dev_priv->depth_offset_pitch); + DMAOUTREG(MACH64_DST_X_Y, (y << 16) | x); + DMAOUTREG(MACH64_DST_WIDTH_HEIGHT, (h << 16) | w); + } + } + + DMAADVANCE(dev_priv, 1); + + return 0; +} + +static int mach64_dma_dispatch_swap(DRMFILE filp, drm_device_t * dev) +{ + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + int nbox = sarea_priv->nbox; + drm_clip_rect_t *pbox = sarea_priv->boxes; + u32 fb_bpp; + int i; + DMALOCALS; + + DRM_DEBUG("%s\n", __FUNCTION__); + + switch (dev_priv->fb_bpp) { + case 16: + fb_bpp = MACH64_DATATYPE_RGB565; + break; + case 32: + default: + fb_bpp = MACH64_DATATYPE_ARGB8888; + break; + } + + if (!nbox) + return 0; + + DMAGETPTR(filp, dev_priv, 13 + nbox * 4); /* returns on failure to get buffer */ + + DMAOUTREG(MACH64_Z_CNTL, 0); + DMAOUTREG(MACH64_SCALE_3D_CNTL, 0); + + DMAOUTREG(MACH64_SC_LEFT_RIGHT, 0 | (8191 << 16)); /* no scissor */ + DMAOUTREG(MACH64_SC_TOP_BOTTOM, 0 | (16383 << 16)); + + DMAOUTREG(MACH64_CLR_CMP_CNTL, 0); + DMAOUTREG(MACH64_GUI_TRAJ_CNTL, (MACH64_DST_X_LEFT_TO_RIGHT | + MACH64_DST_Y_TOP_TO_BOTTOM)); + + DMAOUTREG(MACH64_DP_PIX_WIDTH, ((fb_bpp << 0) | + (fb_bpp << 4) | + (fb_bpp << 8) | + (fb_bpp << 16) | (fb_bpp << 28))); + + DMAOUTREG(MACH64_DP_WRITE_MASK, 0xffffffff); + DMAOUTREG(MACH64_DP_MIX, (MACH64_BKGD_MIX_D | MACH64_FRGD_MIX_S)); + DMAOUTREG(MACH64_DP_SRC, (MACH64_BKGD_SRC_BKGD_CLR | + MACH64_FRGD_SRC_BLIT | MACH64_MONO_SRC_ONE)); + + DMAOUTREG(MACH64_SRC_OFF_PITCH, dev_priv->back_offset_pitch); + DMAOUTREG(MACH64_DST_OFF_PITCH, dev_priv->front_offset_pitch); + + for (i = 0; i < nbox; i++) { + int x = pbox[i].x1; + int y = pbox[i].y1; + int w = pbox[i].x2 - x; + int h = pbox[i].y2 - y; + + DRM_DEBUG("dispatch swap %d,%d-%d,%d\n", + pbox[i].x1, pbox[i].y1, pbox[i].x2, pbox[i].y2); + + DMAOUTREG(MACH64_SRC_WIDTH1, w); + DMAOUTREG(MACH64_SRC_Y_X, (x << 16) | y); + DMAOUTREG(MACH64_DST_Y_X, (x << 16) | y); + DMAOUTREG(MACH64_DST_WIDTH_HEIGHT, (h << 16) | w); + + } + + DMAADVANCE(dev_priv, 1); + + if (dev_priv->driver_mode == MACH64_MODE_DMA_ASYNC) { + for (i = 0; i < MACH64_MAX_QUEUED_FRAMES - 1; i++) { + dev_priv->frame_ofs[i] = dev_priv->frame_ofs[i + 1]; + } + dev_priv->frame_ofs[i] = GETRINGOFFSET(); + + dev_priv->sarea_priv->frames_queued++; + } + + return 0; +} + +static int mach64_do_get_frames_queued(drm_mach64_private_t * dev_priv) +{ + drm_mach64_descriptor_ring_t *ring = &dev_priv->ring; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + int i, start; + u32 head, tail, ofs; + + DRM_DEBUG("%s\n", __FUNCTION__); + + if (sarea_priv->frames_queued == 0) + return 0; + + tail = ring->tail; + mach64_ring_tick(dev_priv, ring); + head = ring->head; + + start = (MACH64_MAX_QUEUED_FRAMES - + DRM_MIN(MACH64_MAX_QUEUED_FRAMES, sarea_priv->frames_queued)); + + if (head == tail) { + sarea_priv->frames_queued = 0; + for (i = start; i < MACH64_MAX_QUEUED_FRAMES; i++) { + dev_priv->frame_ofs[i] = ~0; + } + return 0; + } + + for (i = start; i < MACH64_MAX_QUEUED_FRAMES; i++) { + ofs = dev_priv->frame_ofs[i]; + DRM_DEBUG("frame_ofs[%d] ofs: %d\n", i, ofs); + if (ofs == ~0 || + (head < tail && (ofs < head || ofs >= tail)) || + (head > tail && (ofs < head && ofs >= tail))) { + sarea_priv->frames_queued = + (MACH64_MAX_QUEUED_FRAMES - 1) - i; + dev_priv->frame_ofs[i] = ~0; + } + } + + return sarea_priv->frames_queued; +} + +/* Copy and verify a client submited buffer. + * FIXME: Make an assembly optimized version + */ +static __inline__ int copy_and_verify_from_user(u32 *to, + const u32 __user *ufrom, + unsigned long bytes) +{ + unsigned long n = bytes; /* dwords remaining in buffer */ + u32 *from, *orig_from; + + from = drm_alloc(bytes, DRM_MEM_DRIVER); + if (from == NULL) + return ENOMEM; + + if (DRM_COPY_FROM_USER(from, ufrom, bytes)) { + drm_free(from, bytes, DRM_MEM_DRIVER); + return DRM_ERR(EFAULT); + } + orig_from = from; /* we'll be modifying the "from" ptr, so save it */ + + n >>= 2; + + while (n > 1) { + u32 data, reg, count; + + data = *from++; + + n--; + + reg = le32_to_cpu(data); + count = (reg >> 16) + 1; + if (count <= n) { + n -= count; + reg &= 0xffff; + + /* This is an exact match of Mach64's Setup Engine registers, + * excluding SETUP_CNTL (1_C1). + */ + if ((reg >= 0x0190 && reg < 0x01c1) || + (reg >= 0x01ca && reg <= 0x01cf)) { + *to++ = data; + memcpy(to, from, count << 2); + from += count; + to += count; + } else { + DRM_ERROR("%s: Got bad command: 0x%04x\n", + __FUNCTION__, reg); + drm_free(orig_from, bytes, DRM_MEM_DRIVER); + return DRM_ERR(EACCES); + } + } else { + DRM_ERROR + ("%s: Got bad command count(=%u) dwords remaining=%lu\n", + __FUNCTION__, count, n); + drm_free(orig_from, bytes, DRM_MEM_DRIVER); + return DRM_ERR(EINVAL); + } + } + + drm_free(orig_from, bytes, DRM_MEM_DRIVER); + if (n == 0) + return 0; + else { + DRM_ERROR("%s: Bad buf->used(=%lu)\n", __FUNCTION__, bytes); + return DRM_ERR(EINVAL); + } +} + +static int mach64_dma_dispatch_vertex(DRMFILE filp, drm_device_t * dev, + int prim, void *buf, unsigned long used, + int discard) +{ + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_buf_t *copy_buf; + int done = 0; + int verify_ret = 0; + DMALOCALS; + + DRM_DEBUG("%s: buf=%p used=%lu nbox=%d\n", + __FUNCTION__, buf, used, sarea_priv->nbox); + + if (used) { + int ret = 0; + int i = 0; + + copy_buf = mach64_freelist_get(dev_priv); + if (copy_buf == NULL) { + DRM_ERROR("%s: couldn't get buffer in DMAGETPTR\n", + __FUNCTION__); + return DRM_ERR(EAGAIN); + } + + if ((verify_ret = + copy_and_verify_from_user(GETBUFPTR(copy_buf), buf, + used)) == 0) { + + copy_buf->used = used; + + DMASETPTR(copy_buf); + + if (sarea_priv->dirty & ~MACH64_UPLOAD_CLIPRECTS) { + ret = mach64_emit_state(filp, dev_priv); + if (ret < 0) + return ret; + } + + do { + /* Emit the next cliprect */ + if (i < sarea_priv->nbox) { + ret = + mach64_emit_cliprect(filp, dev_priv, + &sarea_priv-> + boxes[i]); + if (ret < 0) { + /* failed to get buffer */ + return ret; + } else if (ret != 0) { + /* null intersection with scissor */ + continue; + } + } + if ((i >= sarea_priv->nbox - 1)) + done = 1; + + /* Add the buffer to the DMA queue */ + DMAADVANCE(dev_priv, done); + + } while (++i < sarea_priv->nbox); + } + + if (copy_buf->pending && !done) { + DMADISCARDBUF(); + } else if (!done) { + /* This buffer wasn't used (no cliprects or verify failed), so place it back + * on the free list + */ + struct list_head *ptr; + drm_mach64_freelist_t *entry; +#if MACH64_EXTRA_CHECKING + list_for_each(ptr, &dev_priv->pending) { + entry = + list_entry(ptr, drm_mach64_freelist_t, + list); + if (copy_buf == entry->buf) { + DRM_ERROR + ("%s: Trying to release a pending buf\n", + __FUNCTION__); + return DRM_ERR(EFAULT); + } + } +#endif + ptr = dev_priv->placeholders.next; + entry = list_entry(ptr, drm_mach64_freelist_t, list); + copy_buf->pending = 0; + copy_buf->used = 0; + entry->buf = copy_buf; + entry->discard = 1; + list_del(ptr); + list_add_tail(ptr, &dev_priv->free_list); + } + } + + sarea_priv->dirty &= ~MACH64_UPLOAD_CLIPRECTS; + sarea_priv->nbox = 0; + + return verify_ret; +} + +static int mach64_dma_dispatch_blit(DRMFILE filp, drm_device_t * dev, + drm_mach64_blit_t * blit) +{ + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_device_dma_t *dma = dev->dma; + int dword_shift, dwords; + drm_buf_t *buf; + DMALOCALS; + + /* The compiler won't optimize away a division by a variable, + * even if the only legal values are powers of two. Thus, we'll + * use a shift instead. + */ + switch (blit->format) { + case MACH64_DATATYPE_ARGB8888: + dword_shift = 0; + break; + case MACH64_DATATYPE_ARGB1555: + case MACH64_DATATYPE_RGB565: + case MACH64_DATATYPE_VYUY422: + case MACH64_DATATYPE_YVYU422: + case MACH64_DATATYPE_ARGB4444: + dword_shift = 1; + break; + case MACH64_DATATYPE_CI8: + case MACH64_DATATYPE_RGB8: + dword_shift = 2; + break; + default: + DRM_ERROR("invalid blit format %d\n", blit->format); + return DRM_ERR(EINVAL); + } + + /* Dispatch the blit buffer. + */ + buf = dma->buflist[blit->idx]; + + if (buf->filp != filp) { + DRM_ERROR("process %d (filp %p) using buffer with filp %p\n", + DRM_CURRENTPID, filp, buf->filp); + return DRM_ERR(EINVAL); + } + + if (buf->pending) { + DRM_ERROR("sending pending buffer %d\n", blit->idx); + return DRM_ERR(EINVAL); + } + + /* Set buf->used to the bytes of blit data based on the blit dimensions + * and verify the size. When the setup is emitted to the buffer with + * the DMA* macros below, buf->used is incremented to include the bytes + * used for setup as well as the blit data. + */ + dwords = (blit->width * blit->height) >> dword_shift; + buf->used = dwords << 2; + if (buf->used <= 0 || + buf->used > MACH64_BUFFER_SIZE - MACH64_HOSTDATA_BLIT_OFFSET) { + DRM_ERROR("Invalid blit size: %d bytes\n", buf->used); + return DRM_ERR(EINVAL); + } + + /* FIXME: Use a last buffer flag and reduce the state emitted for subsequent, + * continuation buffers? + */ + + /* Blit via BM_HOSTDATA (gui-master) - like HOST_DATA[0-15], but doesn't require + * a register command every 16 dwords. State setup is added at the start of the + * buffer -- the client leaves space for this based on MACH64_HOSTDATA_BLIT_OFFSET + */ + DMASETPTR(buf); + + DMAOUTREG(MACH64_Z_CNTL, 0); + DMAOUTREG(MACH64_SCALE_3D_CNTL, 0); + + DMAOUTREG(MACH64_SC_LEFT_RIGHT, 0 | (8191 << 16)); /* no scissor */ + DMAOUTREG(MACH64_SC_TOP_BOTTOM, 0 | (16383 << 16)); + + DMAOUTREG(MACH64_CLR_CMP_CNTL, 0); /* disable */ + DMAOUTREG(MACH64_GUI_TRAJ_CNTL, + MACH64_DST_X_LEFT_TO_RIGHT | MACH64_DST_Y_TOP_TO_BOTTOM); + + DMAOUTREG(MACH64_DP_PIX_WIDTH, (blit->format << 0) /* dst pix width */ + |(blit->format << 4) /* composite pix width */ + |(blit->format << 8) /* src pix width */ + |(blit->format << 16) /* host data pix width */ + |(blit->format << 28) /* scaler/3D pix width */ + ); + + DMAOUTREG(MACH64_DP_WRITE_MASK, 0xffffffff); /* enable all planes */ + DMAOUTREG(MACH64_DP_MIX, MACH64_BKGD_MIX_D | MACH64_FRGD_MIX_S); + DMAOUTREG(MACH64_DP_SRC, + MACH64_BKGD_SRC_BKGD_CLR + | MACH64_FRGD_SRC_HOST | MACH64_MONO_SRC_ONE); + + DMAOUTREG(MACH64_DST_OFF_PITCH, + (blit->pitch << 22) | (blit->offset >> 3)); + DMAOUTREG(MACH64_DST_X_Y, (blit->y << 16) | blit->x); + DMAOUTREG(MACH64_DST_WIDTH_HEIGHT, (blit->height << 16) | blit->width); + + DRM_DEBUG("%s: %d bytes\n", __FUNCTION__, buf->used); + + /* Add the buffer to the queue */ + DMAADVANCEHOSTDATA(dev_priv); + + return 0; +} + +/* ================================================================ + * IOCTL functions + */ + +int mach64_dma_clear(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mach64_clear_t clear; + int ret; + + DRM_DEBUG("%s: pid=%d\n", __FUNCTION__, DRM_CURRENTPID); + + LOCK_TEST_WITH_RETURN(dev, filp); + + DRM_COPY_FROM_USER_IOCTL(clear, (drm_mach64_clear_t *) data, + sizeof(clear)); + + if (sarea_priv->nbox > MACH64_NR_SAREA_CLIPRECTS) + sarea_priv->nbox = MACH64_NR_SAREA_CLIPRECTS; + + ret = mach64_dma_dispatch_clear(filp, dev, clear.flags, + clear.x, clear.y, clear.w, clear.h, + clear.clear_color, clear.clear_depth); + + /* Make sure we restore the 3D state next time. + */ + sarea_priv->dirty |= (MACH64_UPLOAD_CONTEXT | MACH64_UPLOAD_MISC); + return ret; +} + +int mach64_dma_swap(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + int ret; + + DRM_DEBUG("%s: pid=%d\n", __FUNCTION__, DRM_CURRENTPID); + + LOCK_TEST_WITH_RETURN(dev, filp); + + if (sarea_priv->nbox > MACH64_NR_SAREA_CLIPRECTS) + sarea_priv->nbox = MACH64_NR_SAREA_CLIPRECTS; + + ret = mach64_dma_dispatch_swap(filp, dev); + + /* Make sure we restore the 3D state next time. + */ + sarea_priv->dirty |= (MACH64_UPLOAD_CONTEXT | MACH64_UPLOAD_MISC); + return ret; +} + +int mach64_dma_vertex(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mach64_vertex_t vertex; + + LOCK_TEST_WITH_RETURN(dev, filp); + + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __FUNCTION__); + return DRM_ERR(EINVAL); + } + + DRM_COPY_FROM_USER_IOCTL(vertex, (drm_mach64_vertex_t *) data, + sizeof(vertex)); + + DRM_DEBUG("%s: pid=%d buf=%p used=%lu discard=%d\n", + __FUNCTION__, DRM_CURRENTPID, + vertex.buf, vertex.used, vertex.discard); + + if (vertex.prim < 0 || vertex.prim > MACH64_PRIM_POLYGON) { + DRM_ERROR("buffer prim %d\n", vertex.prim); + return DRM_ERR(EINVAL); + } + + if (vertex.used > MACH64_BUFFER_SIZE || (vertex.used & 3) != 0) { + DRM_ERROR("Invalid vertex buffer size: %lu bytes\n", + vertex.used); + return DRM_ERR(EINVAL); + } + + if (sarea_priv->nbox > MACH64_NR_SAREA_CLIPRECTS) + sarea_priv->nbox = MACH64_NR_SAREA_CLIPRECTS; + + return mach64_dma_dispatch_vertex(filp, dev, vertex.prim, vertex.buf, + vertex.used, vertex.discard); +} + +int mach64_dma_blit(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_device_dma_t *dma = dev->dma; + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv; + drm_mach64_blit_t blit; + int ret; + + LOCK_TEST_WITH_RETURN(dev, filp); + + DRM_COPY_FROM_USER_IOCTL(blit, (drm_mach64_blit_t *) data, + sizeof(blit)); + + DRM_DEBUG("%s: pid=%d index=%d\n", + __FUNCTION__, DRM_CURRENTPID, blit.idx); + + if (blit.idx < 0 || blit.idx >= dma->buf_count) { + DRM_ERROR("buffer index %d (of %d max)\n", + blit.idx, dma->buf_count - 1); + return DRM_ERR(EINVAL); + } + + ret = mach64_dma_dispatch_blit(filp, dev, &blit); + + /* Make sure we restore the 3D state next time. + */ + sarea_priv->dirty |= (MACH64_UPLOAD_CONTEXT | + MACH64_UPLOAD_MISC | MACH64_UPLOAD_CLIPRECTS); + + return ret; +} + +int mach64_get_param(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_mach64_private_t *dev_priv = dev->dev_private; + drm_mach64_getparam_t param; + int value; + + DRM_DEBUG("%s\n", __FUNCTION__); + + if (!dev_priv) { + DRM_ERROR("%s called with no initialization\n", __FUNCTION__); + return DRM_ERR(EINVAL); + } + + DRM_COPY_FROM_USER_IOCTL(param, (drm_mach64_getparam_t *) data, + sizeof(param)); + + switch (param.param) { + case MACH64_PARAM_FRAMES_QUEUED: + /* Needs lock since it calls mach64_ring_tick() */ + LOCK_TEST_WITH_RETURN(dev, filp); + value = mach64_do_get_frames_queued(dev_priv); + break; + case MACH64_PARAM_IRQ_NR: + value = dev->irq; + break; + default: + return DRM_ERR(EINVAL); + } + + if (DRM_COPY_TO_USER(param.value, &value, sizeof(int))) { + DRM_ERROR("copy_to_user\n"); + return DRM_ERR(EFAULT); + } + + return 0; +} |