From: Damien Lespiau <damien.lespiau@xxxxxxxxx>
So we can use it with bare kernel types, without going through libdrm
bos.
v2: Don't forget the object handle. (Tvrtko)
Correct surface pitch calculation. (Tvrtko)
Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
lib/intel_batchbuffer.c | 134 +++++++++++++++++++++++++++++++++++++++++++++++-
lib/intel_batchbuffer.h | 18 +++++++
2 files changed, 151 insertions(+), 1 deletion(-)
diff --git a/lib/intel_batchbuffer.c b/lib/intel_batchbuffer.c
index 8ef5ada..5cf65cf 100644
--- a/lib/intel_batchbuffer.c
+++ b/lib/intel_batchbuffer.c
@@ -41,6 +41,8 @@
#include "intel_reg.h"
#include "rendercopy.h"
#include "media_fill.h"
+#include "ioctl_wrappers.h"
+
#include <i915_drm.h>
/**
@@ -486,7 +488,7 @@ void igt_buf_write_to_png(struct igt_buf *buf, const char *filename)
* pitches are in bytes if the surfaces are linear, number of dwords
* otherwise
*/
-static uint32_t fast_copy_pitch(unsigned int stride, enum i915_tiling tiling)
+static uint32_t fast_copy_pitch(unsigned int stride, unsigned int tiling)
{
if (tiling != I915_TILING_NONE)
return stride / 4;
@@ -551,6 +553,136 @@ static uint32_t fast_copy_dword1(unsigned int src_tiling,
return dword1;
}
+static void
+fill_relocation(struct drm_i915_gem_relocation_entry *reloc,
+ uint32_t gem_handle, uint32_t offset, /* in dwords */
+ uint32_t read_domains, uint32_t write_domains)
+{
+ reloc->target_handle = gem_handle;
+ reloc->delta = 0;
+ reloc->offset = offset * sizeof(uint32_t);
+ reloc->presumed_offset = 0;
+ reloc->read_domains = read_domains;
+ reloc->write_domain = write_domains;
+}
+
+static void
+fill_object(struct drm_i915_gem_exec_object2 *obj, uint32_t gem_handle,
+ struct drm_i915_gem_relocation_entry *relocs, uint32_t count)
+{
+ memset(obj, 0, sizeof(*obj));
+ obj->handle = gem_handle;
+ obj->relocation_count = count;
+ obj->relocs_ptr = (uint64_t)relocs;
+}
+
+static void exec_blit(int fd,
+ struct drm_i915_gem_exec_object2 *objs, uint32_t count,
+ uint32_t batch_len /* in dwords */)
+{
+ struct drm_i915_gem_execbuffer2 exec;
+
+ exec.buffers_ptr = (uint64_t)objs;
+ exec.buffer_count = count;
+ exec.batch_start_offset = 0;
+ exec.batch_len = batch_len * 4;
+ exec.DR1 = exec.DR4 = 0;
+ exec.num_cliprects = 0;
+ exec.cliprects_ptr = 0;
+ exec.flags = I915_EXEC_BLT;
+ i915_execbuffer2_set_context_id(exec, 0);
+ exec.rsvd2 = 0;
+
+ gem_execbuf(fd, &exec);
+}
+
+/**
+ * igt_blitter_fast_copy__raw:
+ * @fd: file descriptor of the i915 driver
+ * @src_handle: GEM handle of the source buffer
+ * @src_stride: Stride (in bytes) of the source buffer
+ * @src_tiling: Tiling mode of the source buffer
+ * @src_x: X coordinate of the source region to copy
+ * @src_y: Y coordinate of the source region to copy
+ * @width: Width of the region to copy
+ * @height: Height of the region to copy
+ * @dst_handle: GEM handle of the source buffer
+ * @dst_stride: Stride (in bytes) of the destination buffer
+ * @dst_tiling: Tiling mode of the destination buffer
+ * @dst_x: X coordinate of destination
+ * @dst_y: Y coordinate of destination
+ *
+ * Like igt_blitter_fast_copy(), but talking to the kernel directly.
+ */
+void igt_blitter_fast_copy__raw(int fd,
+ /* src */
+ uint32_t src_handle,
+ unsigned int src_stride,
+ unsigned int src_tiling,
+ unsigned int src_x, unsigned src_y,
+
+ /* size */
+ unsigned int width, unsigned int height,
+
+ /* dst */
+ uint32_t dst_handle,
+ unsigned int dst_stride,
+ unsigned int dst_tiling,
+ unsigned int dst_x, unsigned dst_y)
+{
+ uint32_t batch[12];
+ struct drm_i915_gem_exec_object2 objs[3];
+ struct drm_i915_gem_relocation_entry relocs[2];
+ uint32_t batch_handle;
+ uint32_t dword0, dword1;
+ uint32_t src_pitch, dst_pitch;
+ int i = 0;
+
+ src_pitch = fast_copy_pitch(src_stride, src_tiling);
+ dst_pitch = fast_copy_pitch(dst_stride, dst_tiling);
+ dword0 = fast_copy_dword0(src_tiling, dst_tiling);
+ dword1 = fast_copy_dword1(src_tiling, dst_tiling);
+
+#define CHECK_RANGE(x) ((x) >= 0 && (x) < (1 << 15))
+ assert(CHECK_RANGE(src_x) && CHECK_RANGE(src_y) &&
+ CHECK_RANGE(dst_x) && CHECK_RANGE(dst_y) &&
+ CHECK_RANGE(width) && CHECK_RANGE(height) &&
+ CHECK_RANGE(src_x + width) && CHECK_RANGE(src_y + height) &&
+ CHECK_RANGE(dst_x + width) && CHECK_RANGE(dst_y + height) &&
+ CHECK_RANGE(src_pitch) && CHECK_RANGE(dst_pitch));
+#undef CHECK_RANGE
+
+ batch[i++] = dword0;
+ batch[i++] = dword1 | dst_pitch;
+ batch[i++] = (dst_y << 16) | dst_x; /* dst x1,y1 */
+ batch[i++] = ((dst_y + height) << 16) | (dst_x + width); /* dst x2,y2 */
+ batch[i++] = 0; /* dst address lower bits */
+ batch[i++] = 0; /* dst address upper bits */
+ batch[i++] = (src_y << 16) | src_x; /* src x1,y1 */
+ batch[i++] = src_pitch;
+ batch[i++] = 0; /* src address lower bits */
+ batch[i++] = 0; /* src address upper bits */
+ batch[i++] = MI_BATCH_BUFFER_END;
+ batch[i++] = MI_NOOP;
+
+ igt_assert(i == ARRAY_SIZE(batch));
+
+ batch_handle = gem_create(fd, 4096);
+ gem_write(fd, batch_handle, 0, batch, sizeof(batch));
+
+ fill_relocation(&relocs[0], dst_handle, 4,
+ I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER);
+ fill_relocation(&relocs[1], src_handle, 8, I915_GEM_DOMAIN_RENDER, 0);
+
+ fill_object(&objs[0], dst_handle, NULL, 0);
+ fill_object(&objs[1], src_handle, NULL, 0);
+ fill_object(&objs[2], batch_handle, relocs, 2);
+
+ exec_blit(fd, objs, 3, ARRAY_SIZE(batch));
+
+ gem_close(fd, batch_handle);
+}
+
/**
* igt_blitter_fast_copy:
* @batch: batchbuffer object
diff --git a/lib/intel_batchbuffer.h b/lib/intel_batchbuffer.h
index 0f22cd6..7f39b84 100644
--- a/lib/intel_batchbuffer.h
+++ b/lib/intel_batchbuffer.h
@@ -3,6 +3,8 @@
#include <stdint.h>
#include <intel_bufmgr.h>
+#include <i915_drm.h>
+
#include "igt_core.h"
#include "intel_reg.h"
@@ -229,6 +231,22 @@ void igt_blitter_fast_copy(struct intel_batchbuffer *batch,
unsigned width, unsigned height,
struct igt_buf *dst, unsigned dst_x, unsigned dst_y);
+void igt_blitter_fast_copy__raw(int fd,
+ /* src */
+ uint32_t src_handle,
+ unsigned int src_stride,
+ unsigned int src_tiling,
+ unsigned int src_x, unsigned src_y,
+
+ /* size */
+ unsigned int width, unsigned int height,
+
+ /* dst */
+ uint32_t dst_handle,
+ unsigned int dst_stride,
+ unsigned int dst_tiling,
+ unsigned int dst_x, unsigned dst_y);
+
/**
* igt_render_copyfunc_t:
* @batch: batchbuffer object
--
2.3.0
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