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-rw-r--r--src/sna/sna_io.c452
1 files changed, 452 insertions, 0 deletions
diff --git a/src/sna/sna_io.c b/src/sna/sna_io.c
new file mode 100644
index 00000000..41f36713
--- /dev/null
+++ b/src/sna/sna_io.c
@@ -0,0 +1,452 @@
+/*
+ * Copyright (c) 2011 Intel Corporation
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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:
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "sna.h"
+#include "sna_render.h"
+#include "sna_reg.h"
+
+#include <sys/mman.h>
+
+#if DEBUG_IO
+#undef DBG
+#define DBG(x) ErrorF x
+#else
+#define NDEBUG 1
+#endif
+
+#define PITCH(x, y) ALIGN((x)*(y), 4)
+
+static void read_boxes_inplace(struct kgem *kgem,
+ struct kgem_bo *bo, int16_t src_dx, int16_t src_dy,
+ PixmapPtr pixmap, int16_t dst_dx, int16_t dst_dy,
+ const BoxRec *box, int n)
+{
+ int bpp = pixmap->drawable.bitsPerPixel;
+ void *src, *dst = pixmap->devPrivate.ptr;
+ int src_pitch = bo->pitch;
+ int dst_pitch = pixmap->devKind;
+
+ DBG(("%s x %d, tiling=%d\n", __FUNCTION__, n, bo->tiling));
+
+ kgem_bo_submit(kgem, bo);
+
+ src = kgem_bo_map(kgem, bo, PROT_READ);
+ if (src == NULL)
+ return;
+
+ do {
+ memcpy_blt(src, dst, bpp,
+ src_pitch, dst_pitch,
+ box->x1 + src_dx, box->y1 + src_dy,
+ box->x1 + dst_dx, box->y1 + dst_dy,
+ box->x2 - box->x1, box->y2 - box->y1);
+ box++;
+ } while (--n);
+
+ munmap(src, bo->size);
+}
+
+void sna_read_boxes(struct sna *sna,
+ struct kgem_bo *src_bo, int16_t src_dx, int16_t src_dy,
+ PixmapPtr dst, int16_t dst_dx, int16_t dst_dy,
+ const BoxRec *box, int nbox)
+{
+ struct kgem *kgem = &sna->kgem;
+ struct kgem_bo *dst_bo;
+ int tmp_nbox;
+ const BoxRec *tmp_box;
+ char *src;
+ void *ptr;
+ int src_pitch, cpp, offset;
+ int n, cmd, br13;
+
+ DBG(("%s x %d, src=(handle=%d, offset=(%d,%d)), dst=(size=(%d, %d), offset=(%d,%d))\n",
+ __FUNCTION__, nbox, src_bo->handle, src_dx, src_dy,
+ dst->drawable.width, dst->drawable.height, dst_dx, dst_dy));
+
+ if (DEBUG_NO_IO || kgem->wedged ||
+ !kgem_bo_is_busy(kgem, src_bo) ||
+ src_bo->tiling == I915_TILING_Y) {
+ read_boxes_inplace(kgem,
+ src_bo, src_dx, src_dy,
+ dst, dst_dx, dst_dy,
+ box, nbox);
+ return;
+ }
+
+ /* count the total number of bytes to be read and allocate a bo */
+ cpp = dst->drawable.bitsPerPixel / 8;
+ offset = 0;
+ for (n = 0; n < nbox; n++) {
+ int height = box[n].y2 - box[n].y1;
+ int width = box[n].x2 - box[n].x1;
+ offset += PITCH(width, cpp) * height;
+ }
+
+ DBG((" read buffer size=%d\n", offset));
+
+ dst_bo = kgem_create_buffer(kgem, offset, KGEM_BUFFER_LAST, &ptr);
+ if (!dst_bo) {
+ read_boxes_inplace(kgem,
+ src_bo, src_dx, src_dy,
+ dst, dst_dx, dst_dy,
+ box, nbox);
+ return;
+ }
+
+ cmd = XY_SRC_COPY_BLT_CMD;
+ if (cpp == 4)
+ cmd |= BLT_WRITE_ALPHA | BLT_WRITE_RGB;
+ src_pitch = src_bo->pitch;
+ if (kgem->gen >= 40 && src_bo->tiling) {
+ cmd |= BLT_SRC_TILED;
+ src_pitch >>= 2;
+ }
+
+ br13 = 0xcc << 16;
+ switch (cpp) {
+ default:
+ case 4: br13 |= 1 << 25; /* RGB8888 */
+ case 2: br13 |= 1 << 24; /* RGB565 */
+ case 1: break;
+ }
+
+ kgem_set_mode(kgem, KGEM_BLT);
+ if (kgem->nexec + 2 > KGEM_EXEC_SIZE(kgem) ||
+ kgem->nreloc + 2 > KGEM_RELOC_SIZE(kgem) ||
+ !kgem_check_batch(kgem, 8) ||
+ !kgem_check_bo_fenced(kgem, dst_bo, src_bo, NULL))
+ _kgem_submit(kgem);
+
+ tmp_nbox = nbox;
+ tmp_box = box;
+ offset = 0;
+ do {
+ int nbox_this_time;
+
+ nbox_this_time = tmp_nbox;
+ if (8*nbox_this_time > kgem->surface - kgem->nbatch - KGEM_BATCH_RESERVED)
+ nbox_this_time = (kgem->surface - kgem->nbatch - KGEM_BATCH_RESERVED) / 8;
+ if (2*nbox_this_time > KGEM_RELOC_SIZE(kgem) - kgem->nreloc)
+ nbox_this_time = (KGEM_RELOC_SIZE(kgem) - kgem->nreloc) / 2;
+ assert(nbox_this_time);
+ tmp_nbox -= nbox_this_time;
+
+ for (n = 0; n < nbox_this_time; n++) {
+ int height = tmp_box[n].y2 - tmp_box[n].y1;
+ int width = tmp_box[n].x2 - tmp_box[n].x1;
+ int pitch = PITCH(width, cpp);
+ uint32_t *b = kgem->batch + kgem->nbatch;
+
+ DBG((" blt offset %x: (%d, %d) x (%d, %d), pitch=%d\n",
+ offset,
+ tmp_box[n].x1 + src_dx,
+ tmp_box[n].y1 + src_dy,
+ width, height, pitch));
+
+ assert(tmp_box[n].x1 + src_dx >= 0);
+ assert((tmp_box[n].x2 + src_dx) * dst->drawable.bitsPerPixel/8 <= src_bo->pitch);
+ assert(tmp_box[n].y1 + src_dy >= 0);
+ assert((tmp_box[n].y2 + src_dy) * src_bo->pitch <= src_bo->size);
+
+ b[0] = cmd;
+ b[1] = br13 | pitch;
+ b[2] = 0;
+ b[3] = height << 16 | width;
+ b[4] = kgem_add_reloc(kgem, kgem->nbatch + 4, dst_bo,
+ I915_GEM_DOMAIN_RENDER << 16 |
+ I915_GEM_DOMAIN_RENDER |
+ KGEM_RELOC_FENCED,
+ offset);
+ b[5] = (tmp_box[n].y1 + src_dy) << 16 | (tmp_box[n].x1 + src_dx);
+ b[6] = src_pitch;
+ b[7] = kgem_add_reloc(kgem, kgem->nbatch + 7, src_bo,
+ I915_GEM_DOMAIN_RENDER << 16 |
+ KGEM_RELOC_FENCED,
+ 0);
+ kgem->nbatch += 8;
+
+ offset += pitch * height;
+ }
+ tmp_box += nbox_this_time;
+
+ _kgem_submit(kgem);
+ } while (tmp_nbox);
+ assert(offset == dst_bo->size);
+
+ kgem_buffer_sync(kgem, dst_bo);
+
+ src = ptr;
+ do {
+ int height = box->y2 - box->y1;
+ int width = box->x2 - box->x1;
+ int pitch = PITCH(width, cpp);
+
+ DBG((" copy offset %lx [%08x...%08x]: (%d, %d) x (%d, %d), src pitch=%d, dst pitch=%d, bpp=%d\n",
+ (long)((char *)src - (char *)ptr),
+ *(uint32_t*)src, *(uint32_t*)(src+pitch*height - 4),
+ box->x1 + dst_dx,
+ box->y1 + dst_dy,
+ width, height,
+ pitch, dst->devKind, cpp*8));
+
+ assert(box->x1 + dst_dx >= 0);
+ assert(box->x2 + dst_dx <= dst->drawable.width);
+ assert(box->y1 + dst_dy >= 0);
+ assert(box->y2 + dst_dy <= dst->drawable.height);
+
+ memcpy_blt(src, dst->devPrivate.ptr, cpp*8,
+ pitch, dst->devKind,
+ 0, 0,
+ box->x1 + dst_dx, box->y1 + dst_dy,
+ width, height);
+ box++;
+
+ src += pitch * height;
+ } while (--nbox);
+ assert(src - (char *)ptr == dst_bo->size);
+ kgem_bo_destroy(kgem, dst_bo);
+}
+
+static void write_boxes_inplace(struct kgem *kgem,
+ const void *src, int stride, int bpp, int16_t src_dx, int16_t src_dy,
+ struct kgem_bo *bo, int16_t dst_dx, int16_t dst_dy,
+ const BoxRec *box, int n)
+{
+ int dst_pitch = bo->pitch;
+ int src_pitch = stride;
+ void *dst;
+
+ DBG(("%s x %d, tiling=%d\n", __FUNCTION__, n, bo->tiling));
+
+ kgem_bo_submit(kgem, bo);
+
+ dst = kgem_bo_map(kgem, bo, PROT_READ | PROT_WRITE);
+ if (dst == NULL)
+ return;
+
+ do {
+ DBG(("%s: (%d, %d) -> (%d, %d) x (%d, %d) [bpp=%d, src_pitch=%d, dst_pitch=%d]\n", __FUNCTION__,
+ box->x1 + src_dx, box->y1 + src_dy,
+ box->x1 + dst_dx, box->y1 + dst_dy,
+ box->x2 - box->x1, box->y2 - box->y1,
+ bpp, src_pitch, dst_pitch));
+
+ memcpy_blt(src, dst, bpp,
+ src_pitch, dst_pitch,
+ box->x1 + src_dx, box->y1 + src_dy,
+ box->x1 + dst_dx, box->y1 + dst_dy,
+ box->x2 - box->x1, box->y2 - box->y1);
+ box++;
+ } while (--n);
+
+ munmap(dst, bo->size);
+}
+
+void sna_write_boxes(struct sna *sna,
+ struct kgem_bo *dst_bo, int16_t dst_dx, int16_t dst_dy,
+ const void *src, int stride, int bpp, int16_t src_dx, int16_t src_dy,
+ const BoxRec *box, int nbox)
+{
+ struct kgem *kgem = &sna->kgem;
+ struct kgem_bo *src_bo;
+ void *ptr;
+ int offset;
+ int n, cmd, br13;
+
+ DBG(("%s x %d\n", __FUNCTION__, nbox));
+
+ if (DEBUG_NO_IO || kgem->wedged ||
+ !kgem_bo_is_busy(kgem, dst_bo) ||
+ dst_bo->tiling == I915_TILING_Y) {
+ write_boxes_inplace(kgem,
+ src, stride, bpp, src_dx, src_dy,
+ dst_bo, dst_dx, dst_dy,
+ box, nbox);
+ return;
+ }
+
+ cmd = XY_SRC_COPY_BLT_CMD;
+ if (bpp == 32)
+ cmd |= BLT_WRITE_ALPHA | BLT_WRITE_RGB;
+ br13 = dst_bo->pitch;
+ if (kgem->gen >= 40 && dst_bo->tiling) {
+ cmd |= BLT_DST_TILED;
+ br13 >>= 2;
+ }
+ br13 |= 0xcc << 16;
+ switch (bpp) {
+ default:
+ case 32: br13 |= 1 << 25; /* RGB8888 */
+ case 16: br13 |= 1 << 24; /* RGB565 */
+ case 8: break;
+ }
+
+ kgem_set_mode(kgem, KGEM_BLT);
+ if (kgem->nexec + 2 > KGEM_EXEC_SIZE(kgem) ||
+ kgem->nreloc + 2 > KGEM_RELOC_SIZE(kgem) ||
+ !kgem_check_batch(kgem, 8) ||
+ !kgem_check_bo_fenced(kgem, dst_bo, NULL))
+ _kgem_submit(kgem);
+
+ do {
+ int nbox_this_time;
+
+ nbox_this_time = nbox;
+ if (8*nbox_this_time > kgem->surface - kgem->nbatch - KGEM_BATCH_RESERVED)
+ nbox_this_time = (kgem->surface - kgem->nbatch - KGEM_BATCH_RESERVED) / 8;
+ if (2*nbox_this_time > KGEM_RELOC_SIZE(kgem) - kgem->nreloc)
+ nbox_this_time = (KGEM_RELOC_SIZE(kgem) - kgem->nreloc) / 2;
+ assert(nbox_this_time);
+ nbox -= nbox_this_time;
+
+ /* Count the total number of bytes to be read and allocate a
+ * single buffer large enough. Or if it is very small, combine
+ * with other allocations. */
+ offset = 0;
+ for (n = 0; n < nbox_this_time; n++) {
+ int height = box[n].y2 - box[n].y1;
+ int width = box[n].x2 - box[n].x1;
+ offset += PITCH(width, bpp >> 3) * height;
+ }
+
+ src_bo = kgem_create_buffer(kgem, offset,
+ KGEM_BUFFER_WRITE | KGEM_BUFFER_LAST,
+ &ptr);
+ if (!src_bo)
+ break;
+
+ offset = 0;
+ do {
+ int height = box->y2 - box->y1;
+ int width = box->x2 - box->x1;
+ int pitch = PITCH(width, bpp >> 3);
+ uint32_t *b;
+
+ DBG((" %s: box src=(%d, %d), dst=(%d, %d) size=(%d, %d), dst offset=%d, dst pitch=%d\n",
+ __FUNCTION__,
+ box->x1 + src_dx, box->y1 + src_dy,
+ box->x1 + dst_dx, box->y1 + dst_dy,
+ width, height,
+ offset, pitch));
+
+ assert(box->x1 + src_dx >= 0);
+ assert((box->x2 + src_dx)*bpp <= 8*stride);
+ assert(box->y1 + src_dy >= 0);
+
+ assert(box->x1 + dst_dx >= 0);
+ assert(box->y1 + dst_dy >= 0);
+
+ memcpy_blt(src, (char *)ptr + offset, bpp,
+ stride, pitch,
+ box->x1 + src_dx, box->y1 + src_dy,
+ 0, 0,
+ width, height);
+
+ b = kgem->batch + kgem->nbatch;
+ b[0] = cmd;
+ b[1] = br13;
+ b[2] = (box->y1 + dst_dy) << 16 | (box->x1 + dst_dx);
+ b[3] = (box->y2 + dst_dy) << 16 | (box->x2 + dst_dx);
+ b[4] = kgem_add_reloc(kgem, kgem->nbatch + 4, dst_bo,
+ I915_GEM_DOMAIN_RENDER << 16 |
+ I915_GEM_DOMAIN_RENDER |
+ KGEM_RELOC_FENCED,
+ 0);
+ b[5] = 0;
+ b[6] = pitch;
+ b[7] = kgem_add_reloc(kgem, kgem->nbatch + 7, src_bo,
+ I915_GEM_DOMAIN_RENDER << 16 |
+ KGEM_RELOC_FENCED,
+ offset);
+ kgem->nbatch += 8;
+
+ box++;
+ offset += pitch * height;
+ } while (--nbox_this_time);
+ assert(offset == src_bo->size);
+
+ if (nbox)
+ _kgem_submit(kgem);
+
+ kgem_bo_destroy(kgem, src_bo);
+ } while (nbox);
+
+ _kgem_set_mode(kgem, KGEM_BLT);
+}
+
+struct kgem_bo *sna_replace(struct sna *sna,
+ struct kgem_bo *bo,
+ int width, int height, int bpp,
+ const void *src, int stride)
+{
+ struct kgem *kgem = &sna->kgem;
+ void *dst;
+
+ DBG(("%s(%d, %d)\n", __FUNCTION__, width, height));
+
+ assert(bo->reusable);
+ if (kgem_bo_is_busy(kgem, bo)) {
+ struct kgem_bo *new_bo;
+ int tiling = bo->tiling;
+
+ /* As we use fences for GPU BLTs, we often have
+ * lots of contention upon the limited number of fences.
+ */
+ if (sna->kgem.gen < 40)
+ tiling = I915_TILING_NONE;
+
+ new_bo = kgem_create_2d(kgem,
+ width, height, bpp, tiling,
+ CREATE_INACTIVE);
+ if (new_bo) {
+ kgem_bo_destroy(kgem, bo);
+ bo = new_bo;
+ }
+ }
+
+ if (bo->tiling == I915_TILING_NONE && bo->pitch == stride) {
+ kgem_bo_write(kgem, bo, src, (height-1)*stride + width*bpp/8);
+ return bo;
+ }
+
+ dst = kgem_bo_map(kgem, bo, PROT_READ | PROT_WRITE);
+ if (dst) {
+ memcpy_blt(src, dst, bpp,
+ stride, bo->pitch,
+ 0, 0,
+ 0, 0,
+ width, height);
+ munmap(dst, bo->size);
+ }
+
+ return bo;
+}
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