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path: root/drivers/gpu/drm/qxl/qxl_image.c
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Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_image.c')
-rw-r--r--drivers/gpu/drm/qxl/qxl_image.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_image.c b/drivers/gpu/drm/qxl/qxl_image.c
new file mode 100644
index 000000000000..cf856206996b
--- /dev/null
+++ b/drivers/gpu/drm/qxl/qxl_image.c
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2013 Red Hat Inc.
+ *
+ * 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 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 HOLDER(S) OR AUTHOR(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: Dave Airlie
+ * Alon Levy
+ */
+
+#include <linux/gfp.h>
+#include <linux/slab.h>
+
+#include "qxl_drv.h"
+#include "qxl_object.h"
+
+static int
+qxl_image_create_helper(struct qxl_device *qdev,
+ struct qxl_release *release,
+ struct qxl_bo **image_bo,
+ const uint8_t *data,
+ int width, int height,
+ int depth, unsigned int hash,
+ int stride)
+{
+ struct qxl_image *image;
+ struct qxl_data_chunk *chunk;
+ int i;
+ int chunk_stride;
+ int linesize = width * depth / 8;
+ struct qxl_bo *chunk_bo;
+ int ret;
+ void *ptr;
+ /* Chunk */
+ /* FIXME: Check integer overflow */
+ /* TODO: variable number of chunks */
+ chunk_stride = stride; /* TODO: should use linesize, but it renders
+ wrong (check the bitmaps are sent correctly
+ first) */
+ ret = qxl_alloc_bo_reserved(qdev, sizeof(*chunk) + height * chunk_stride,
+ &chunk_bo);
+
+ ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, 0);
+ chunk = ptr;
+ chunk->data_size = height * chunk_stride;
+ chunk->prev_chunk = 0;
+ chunk->next_chunk = 0;
+ qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr);
+
+ {
+ void *k_data, *i_data;
+ int remain;
+ int page;
+ int size;
+ if (stride == linesize && chunk_stride == stride) {
+ remain = linesize * height;
+ page = 0;
+ i_data = (void *)data;
+
+ while (remain > 0) {
+ ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page << PAGE_SHIFT);
+
+ if (page == 0) {
+ chunk = ptr;
+ k_data = chunk->data;
+ size = PAGE_SIZE - offsetof(struct qxl_data_chunk, data);
+ } else {
+ k_data = ptr;
+ size = PAGE_SIZE;
+ }
+ size = min(size, remain);
+
+ memcpy(k_data, i_data, size);
+
+ qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr);
+ i_data += size;
+ remain -= size;
+ page++;
+ }
+ } else {
+ unsigned page_base, page_offset, out_offset;
+ for (i = 0 ; i < height ; ++i) {
+ i_data = (void *)data + i * stride;
+ remain = linesize;
+ out_offset = offsetof(struct qxl_data_chunk, data) + i * chunk_stride;
+
+ while (remain > 0) {
+ page_base = out_offset & PAGE_MASK;
+ page_offset = offset_in_page(out_offset);
+
+ size = min((int)(PAGE_SIZE - page_offset), remain);
+
+ ptr = qxl_bo_kmap_atomic_page(qdev, chunk_bo, page_base);
+ k_data = ptr + page_offset;
+ memcpy(k_data, i_data, size);
+ qxl_bo_kunmap_atomic_page(qdev, chunk_bo, ptr);
+ remain -= size;
+ i_data += size;
+ out_offset += size;
+ }
+ }
+ }
+ }
+
+
+ qxl_bo_kunmap(chunk_bo);
+
+ /* Image */
+ ret = qxl_alloc_bo_reserved(qdev, sizeof(*image), image_bo);
+
+ ptr = qxl_bo_kmap_atomic_page(qdev, *image_bo, 0);
+ image = ptr;
+
+ image->descriptor.id = 0;
+ image->descriptor.type = SPICE_IMAGE_TYPE_BITMAP;
+
+ image->descriptor.flags = 0;
+ image->descriptor.width = width;
+ image->descriptor.height = height;
+
+ switch (depth) {
+ case 1:
+ /* TODO: BE? check by arch? */
+ image->u.bitmap.format = SPICE_BITMAP_FMT_1BIT_BE;
+ break;
+ case 24:
+ image->u.bitmap.format = SPICE_BITMAP_FMT_24BIT;
+ break;
+ case 32:
+ image->u.bitmap.format = SPICE_BITMAP_FMT_32BIT;
+ break;
+ default:
+ DRM_ERROR("unsupported image bit depth\n");
+ return -EINVAL; /* TODO: cleanup */
+ }
+ image->u.bitmap.flags = QXL_BITMAP_TOP_DOWN;
+ image->u.bitmap.x = width;
+ image->u.bitmap.y = height;
+ image->u.bitmap.stride = chunk_stride;
+ image->u.bitmap.palette = 0;
+ image->u.bitmap.data = qxl_bo_physical_address(qdev, chunk_bo, 0);
+ qxl_release_add_res(qdev, release, chunk_bo);
+ qxl_bo_unreserve(chunk_bo);
+ qxl_bo_unref(&chunk_bo);
+
+ qxl_bo_kunmap_atomic_page(qdev, *image_bo, ptr);
+
+ return 0;
+}
+
+int qxl_image_create(struct qxl_device *qdev,
+ struct qxl_release *release,
+ struct qxl_bo **image_bo,
+ const uint8_t *data,
+ int x, int y, int width, int height,
+ int depth, int stride)
+{
+ data += y * stride + x * (depth / 8);
+ return qxl_image_create_helper(qdev, release, image_bo, data,
+ width, height, depth, 0, stride);
+}