[PATCH i-g-t 1/3] lib/i915: Introduce libraries i915_blt and intel_mocs
Zbigniew Kempczyński
zbigniew.kempczynski at intel.com
Mon Nov 8 08:06:18 UTC 2021
From: Apoorva Singh <apoorva1.singh at intel.com>
Add new libraries i915_blt and intel_mocs for various blt
commands and mocs settings.
Signed-off-by: Apoorva Singh <apoorva1.singh at intel.com>
Signed-off-by: Ayaz A Siddiqui <ayaz.siddiqui at intel.com>
Cc: Zbigniew Kempczyński <zbigniew.kempczynski at intel.com>
Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Cc: Melkaveri, Arjun <arjun.melkaveri at intel.com>
---
lib/i915/i915_blt.c | 419 ++++++++++++++++++++++++++++++++++++++++++
lib/i915/i915_blt.h | 93 ++++++++++
lib/i915/intel_mocs.c | 75 ++++++++
lib/i915/intel_mocs.h | 43 +++++
lib/meson.build | 2 +
5 files changed, 632 insertions(+)
create mode 100644 lib/i915/i915_blt.c
create mode 100644 lib/i915/i915_blt.h
create mode 100644 lib/i915/intel_mocs.c
create mode 100644 lib/i915/intel_mocs.h
diff --git a/lib/i915/i915_blt.c b/lib/i915/i915_blt.c
new file mode 100644
index 000000000..a3771f40a
--- /dev/null
+++ b/lib/i915/i915_blt.c
@@ -0,0 +1,419 @@
+/*
+ * Copyright © 2020 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:
+ * Ayaz A Siddiqui <ayaz.siddiqui at intel.com>
+ *
+ */
+
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <malloc.h>
+#include "drm.h"
+#include "igt.h"
+#include "i915_blt.h"
+#include "i915/intel_mocs.h"
+
+/*
+ * make_block_copy_batch:
+ * @fd: open i915 drm file descriptor
+ * @batch_buf: the batch buffer to populate with the command
+ * @src: fd of the source BO
+ * @dst: fd of the destination BO
+ * @length: size of the src and dest BOs
+ * @reloc: pointer to the relocation entyr for this command
+ * @src_mem_type: source memory type (denotes direct or indirect
+ * addressing)
+ * @dst_mem_type: destination memory type (denotes direct or indirect
+ * addressing)
+ * @src_compression: flag to enable uncompressed read of compressed data
+ * at the source
+ * @dst_compression: flag to enable compressed write at the destination
+ * @resolve: flag to enable resolve of compressed data
+ */
+static int make_block_copy_batch(int fd, uint32_t *batch_buf,
+ uint32_t src, uint32_t dst, uint32_t length,
+ struct drm_i915_gem_relocation_entry *reloc,
+ int src_mem_type, int dst_mem_type,
+ int src_compression, int dst_compression,
+ int resolve)
+{
+ uint32_t *b = batch_buf;
+ uint8_t src_mocs = intel_get_uc_mocs(fd);
+ uint8_t dst_mocs = src_mocs;
+
+ /* BG 0 */
+ b[0] = BLOCK_COPY_BLT_CMD | resolve;
+
+ /* BG 1
+ *
+ * Using Tile 4 dimensions. Height = 32 rows
+ * Width = 128 bytes
+ */
+ b[1] = dst_compression | TILE_4_FORMAT | TILE_4_WIDTH_DWORD |
+ dst_mocs << XY_BLOCK_COPY_BLT_MOCS_SHIFT;
+
+ /* BG 3
+ *
+ * X2 = TILE_4_WIDTH
+ * Y2 = (length / TILE_4_WIDTH) << 16:
+ */
+ b[3] = TILE_4_WIDTH | (length >> 7) << DEST_Y2_COORDINATE_SHIFT;
+
+ /* relocate address in b[4] and b[5] */
+ reloc->offset = 4 * (sizeof(uint32_t));
+ reloc->delta = 0;
+ reloc->target_handle = dst;
+ reloc->read_domains = I915_GEM_DOMAIN_RENDER;
+ reloc->write_domain = I915_GEM_DOMAIN_RENDER;
+ reloc->presumed_offset = 0;
+ reloc++;
+
+ /* BG 6 */
+ b[6] = dst_mem_type << DEST_MEM_TYPE_SHIFT;
+
+ /* BG 8 */
+ b[8] = src_compression | TILE_4_WIDTH_DWORD | TILE_4_FORMAT |
+ src_mocs << XY_BLOCK_COPY_BLT_MOCS_SHIFT;
+
+ /* relocate address in b[9] and b[10] */
+ reloc->offset = 9 * sizeof(uint32_t);
+ reloc->delta = 0;
+ reloc->target_handle = src;
+ reloc->read_domains = I915_GEM_DOMAIN_RENDER;
+ reloc->write_domain = 0;
+ reloc->presumed_offset = 0;
+ reloc++;
+
+ /* BG 11 */
+ b[11] = src_mem_type << SRC_MEM_TYPE_SHIFT;
+
+ /* BG 16 */
+ b[16] = SURFACE_TYPE_2D |
+ ((TILE_4_WIDTH - 1) << DEST_SURF_WIDTH_SHIFT) |
+ (TILE_4_HEIGHT - 1);
+
+ /* BG 19 */
+ b[19] = SURFACE_TYPE_2D |
+ ((TILE_4_WIDTH - 1) << SRC_SURF_WIDTH_SHIFT) |
+ (TILE_4_HEIGHT - 1);
+
+ b += XY_BLOCK_COPY_BLT_LEN_DWORD;
+
+ b[0] = MI_FLUSH_DW | MI_FLUSH_LLC | MI_INVALIDATE_TLB;
+ reloc->offset = 23 * sizeof(uint32_t);
+ reloc->delta = 0;
+ reloc->target_handle = dst_compression > 0 ? dst : src;
+ reloc->read_domains = 0;
+ reloc->write_domain = 0;
+ reloc->presumed_offset = 0;
+ reloc++;
+ b[3] = 0;
+
+ b[4] = MI_FLUSH_DW | MI_FLUSH_CCS;
+ reloc->offset = 27 * sizeof(uint32_t);
+ reloc->delta = 0;
+ reloc->target_handle = dst_compression > 0 ? dst : src;
+ reloc->read_domains = 0;
+ reloc->write_domain = 0;
+ reloc->presumed_offset = 0;
+ reloc++;
+ b[7] = 0;
+
+ b[8] = MI_BATCH_BUFFER_END;
+ b[9] = 0;
+
+ b += 10;
+
+ return (b - batch_buf) * sizeof(uint32_t);
+}
+
+static int __xy_block_copy_blt(int fd, uint32_t cmd,
+ uint32_t *batch_buf,
+ uint32_t src, uint32_t dst,
+ uint32_t length, int mode, uint32_t ctx,
+ struct intel_execution_engine2 *e)
+{
+ struct drm_i915_gem_relocation_entry reloc[4];
+ struct drm_i915_gem_exec_object2 exec[3];
+ struct drm_i915_gem_execbuffer2 execbuf;
+ int len;
+ int src_mem_type, dst_mem_type;
+ int dst_compression, src_compression;
+ int resolve;
+ uint64_t ahnd = get_reloc_ahnd(fd, 0);
+
+ if (mode == 2) { /* in-place decompress */
+ src_mem_type = MEM_TYPE_LOCAL;
+ dst_mem_type = MEM_TYPE_LOCAL;
+ src_compression = COMPRESSION_ENABLE | AUX_CCS_E;
+ dst_compression = COMPRESSION_ENABLE | AUX_CCS_E;
+ resolve = FULL_RESOLVE;
+ } else if (mode == 1) { /* copy from smem to lmem */
+ src_mem_type = MEM_TYPE_SYS;
+ dst_mem_type = MEM_TYPE_LOCAL;
+ src_compression = 0;
+ dst_compression = COMPRESSION_ENABLE | AUX_CCS_E;
+ resolve = 0;
+ } else { /* copy from lmem to smem */
+ src_mem_type = MEM_TYPE_LOCAL;
+ dst_mem_type = MEM_TYPE_SYS;
+ src_compression = COMPRESSION_ENABLE | AUX_CCS_E;
+ dst_compression = 0;
+ resolve = 0;
+ }
+
+ /* construct the batch buffer */
+ memset(reloc, 0, sizeof(reloc));
+ memset(batch_buf, 0, BATCH_SIZE);
+ len = make_block_copy_batch(fd, batch_buf,
+ src, dst, length, reloc,
+ src_mem_type, dst_mem_type,
+ src_compression, dst_compression,
+ resolve);
+ igt_assert(len > 0);
+
+ /* write batch buffer to 'cmd' BO */
+ gem_write(fd, cmd, 0, batch_buf, len);
+
+ /* Execute the batch buffer */
+ memset(exec, 0, sizeof(exec));
+ if (mode == 2) {
+ exec[0].handle = dst;
+ exec[1].handle = cmd;
+ exec[1].relocation_count = !ahnd ? 4 : 0;
+ exec[1].relocs_ptr = to_user_pointer(reloc);
+ if (ahnd) {
+ exec[0].offset = get_offset(ahnd, exec[0].handle, length * CCS_RATIO, 0);
+ exec[0].flags |= EXEC_OBJECT_PINNED | EXEC_OBJECT_WRITE;
+ exec[1].offset = get_offset(ahnd, exec[1].handle, BATCH_SIZE, 0);
+ exec[1].flags |= EXEC_OBJECT_PINNED;
+ }
+ } else {
+ exec[0].handle = src;
+ exec[1].handle = dst;
+ exec[2].handle = cmd;
+ exec[2].relocation_count = !ahnd ? 4 : 0;
+ exec[2].relocs_ptr = to_user_pointer(reloc);
+ if (ahnd) {
+ exec[0].offset = get_offset(ahnd, exec[0].handle, length * CCS_RATIO, 0);
+ exec[0].flags |= EXEC_OBJECT_PINNED;
+ exec[1].offset = get_offset(ahnd, exec[1].handle, length * CCS_RATIO, 0);
+ exec[1].flags |= EXEC_OBJECT_PINNED | EXEC_OBJECT_WRITE;
+ exec[2].offset = get_offset(ahnd, exec[2].handle, BATCH_SIZE, 0);
+ exec[2].flags |= EXEC_OBJECT_PINNED;
+ }
+ }
+
+ memset(&execbuf, 0, sizeof(execbuf));
+ execbuf.buffers_ptr = to_user_pointer(exec);
+ if (mode == 2)
+ execbuf.buffer_count = 2;
+ else
+ execbuf.buffer_count = 3;
+ execbuf.batch_len = len;
+
+ if (ctx)
+ execbuf.rsvd1 = ctx;
+
+ execbuf.flags = I915_EXEC_BLT;
+ if (e)
+ execbuf.flags = e->flags;
+
+ gem_execbuf(fd, &execbuf);
+ gem_sync(fd, cmd);
+
+ return 0;
+}
+
+int xy_block_copy_blt(int fd, uint32_t cmd,
+ uint32_t *batch_buf,
+ uint32_t src, uint32_t dst,
+ uint32_t length, int mode,
+ struct intel_execution_engine2 *e)
+{
+ return __xy_block_copy_blt(fd, cmd, batch_buf, src,
+ dst, length, mode, 0, e);
+}
+
+int xy_block_copy_blt_ctx(int fd, uint32_t cmd,
+ uint32_t *batch_buf,
+ uint32_t src, uint32_t dst,
+ uint32_t length, int mode, uint32_t ctx)
+{
+ return __xy_block_copy_blt(fd, cmd, batch_buf, src,
+ dst, length, mode, ctx, 0);
+}
+
+/*
+ * make_ctrl_surf_batch:
+ * @fd: open i915 drm file descriptor
+ * @batch_buf: the batch buffer to populate with the command
+ * @src: fd of the source BO
+ * @dst: fd of the destination BO
+ * @length: size of the ctrl surf in bytes
+ * @reloc: pointer to the relocation entyr for this command
+ * @src_mem_access: source memory type (denotes direct or indirect
+ * addressing)
+ * @dst_mem_acdcess: destination memory type (denotes direct or indirect
+ * addressing)
+ */
+static int make_ctrl_surf_batch(int fd, uint32_t *batch_buf,
+ uint32_t src, uint32_t dst, uint32_t length,
+ struct drm_i915_gem_relocation_entry *reloc,
+ int src_mem_access, int dst_mem_access)
+{
+ int num_ccs_blocks;
+ uint32_t *b = batch_buf;
+ uint8_t src_mocs = intel_get_uc_mocs(fd);
+ uint8_t dst_mocs = src_mocs;
+
+ num_ccs_blocks = length / CCS_RATIO;
+ if (num_ccs_blocks < 1)
+ num_ccs_blocks = 1;
+ if (num_ccs_blocks > NUM_CCS_BLKS_PER_XFER)
+ return 0;
+
+ /*
+ * We use logical AND with 1023 since the size field
+ * takes values which is in the range of 0 - 1023
+ */
+ b[0] = ((XY_CTRL_SURF_COPY_BLT) |
+ (src_mem_access << SRC_ACCESS_TYPE_SHIFT) |
+ (dst_mem_access << DST_ACCESS_TYPE_SHIFT) |
+ (((num_ccs_blocks - 1) & 1023) << CCS_SIZE_SHIFT));
+
+ b[2] = src_mocs << XY_CTRL_SURF_COPY_BLT_MOCS_SHIFT;
+
+ /* relocate address in b[1] and b[2] */
+ reloc->offset = 1 * sizeof(uint32_t);
+ reloc->delta = 0;
+ reloc->target_handle = src;
+ reloc->read_domains = I915_GEM_DOMAIN_RENDER;
+ reloc->write_domain = 0;
+ reloc->presumed_offset = 0;
+ reloc++;
+
+ b[4] = dst_mocs << XY_CTRL_SURF_COPY_BLT_MOCS_SHIFT;
+
+ /* relocate address in b[3] and b[4] */
+ reloc->offset = 3 * (sizeof(uint32_t));
+ reloc->delta = 0;
+ reloc->target_handle = dst;
+ reloc->read_domains = I915_GEM_DOMAIN_RENDER;
+ reloc->write_domain = I915_GEM_DOMAIN_RENDER;
+ reloc->presumed_offset = 0;
+ reloc++;
+
+ b[5] = 0;
+
+ b[6] = MI_FLUSH_DW | MI_FLUSH_LLC | MI_INVALIDATE_TLB;
+ reloc->offset = 7 * sizeof(uint32_t);
+ reloc->delta = 0;
+ reloc->target_handle =
+ dst_mem_access == INDIRECT_ACCESS ? dst : src;
+ reloc->read_domains = 0;
+ reloc->write_domain = 0;
+ reloc->presumed_offset = 0;
+ reloc++;
+ b[9] = 0;
+
+ b[10] = MI_FLUSH_DW | MI_FLUSH_CCS;
+ reloc->offset = 11 * sizeof(uint32_t);
+ reloc->delta = 0;
+ reloc->target_handle =
+ dst_mem_access == INDIRECT_ACCESS ? dst : src;
+ reloc->read_domains = 0;
+ reloc->write_domain = 0;
+ reloc->presumed_offset = 0;
+ reloc++;
+ b[13] = 0;
+
+ b[14] = MI_BATCH_BUFFER_END;
+ b[15] = 0;
+
+ b += 16;
+
+ return (b - batch_buf) * sizeof(uint32_t);
+}
+
+int xy_ctrl_surf_copy_blt(int fd, uint32_t cmd,
+ uint32_t *batch_buf,
+ uint32_t src, uint32_t dst,
+ uint32_t length, bool writetodev,
+ struct intel_execution_engine2 *e)
+{
+ struct drm_i915_gem_relocation_entry reloc[4];
+ struct drm_i915_gem_exec_object2 exec[3];
+ struct drm_i915_gem_execbuffer2 execbuf;
+ int len, src_mem_access, dst_mem_access;
+ uint64_t ahnd = get_reloc_ahnd(fd, 0);
+
+ if (writetodev) {
+ src_mem_access = DIRECT_ACCESS;
+ dst_mem_access = INDIRECT_ACCESS;
+ } else {
+ src_mem_access = INDIRECT_ACCESS;
+ dst_mem_access = DIRECT_ACCESS;
+ }
+
+ /* construct batch command buffer */
+ memset(reloc, 0, sizeof(reloc));
+ memset(batch_buf, 0, BATCH_SIZE);
+ len = make_ctrl_surf_batch(fd, batch_buf,
+ src, dst, length, reloc,
+ src_mem_access, dst_mem_access);
+ igt_assert(len > 0);
+
+ /* Copy the batch buff to BO cmd */
+ gem_write(fd, cmd, 0, batch_buf, len);
+
+ /* Execute the batch buffer */
+ memset(exec, 0, sizeof(exec));
+ exec[0].handle = src;
+ exec[1].handle = dst;
+ exec[2].handle = cmd;
+ exec[2].relocation_count = !ahnd ? 4 : 0;
+ exec[2].relocs_ptr = to_user_pointer(reloc);
+ if (ahnd) {
+ exec[0].offset = get_offset(ahnd, exec[0].handle, length * CCS_RATIO, 0);
+ exec[0].flags |= EXEC_OBJECT_PINNED;
+ exec[1].offset = get_offset(ahnd, exec[1].handle, length * CCS_RATIO, 0);
+ exec[1].flags |= EXEC_OBJECT_PINNED | EXEC_OBJECT_WRITE;
+ exec[2].offset = get_offset(ahnd, exec[2].handle, BATCH_SIZE, 0);
+ exec[2].flags |= EXEC_OBJECT_PINNED;
+ }
+
+ memset(&execbuf, 0, sizeof(execbuf));
+ execbuf.buffers_ptr = to_user_pointer(exec);
+ execbuf.buffer_count = 3;
+ execbuf.batch_len = len;
+ execbuf.flags = I915_EXEC_BLT;
+ if (e)
+ execbuf.flags = e->flags;
+
+ gem_execbuf(fd, &execbuf);
+ gem_sync(fd, cmd);
+
+ return 0;
+}
diff --git a/lib/i915/i915_blt.h b/lib/i915/i915_blt.h
new file mode 100644
index 000000000..f091c46ab
--- /dev/null
+++ b/lib/i915/i915_blt.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright © 2020 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:
+ * Ayaz A Siddiqui <ayaz.siddiqui at intel.com>
+ *
+ */
+
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <malloc.h>
+#include "drm.h"
+#include "igt.h"
+
+#define MI_FLUSH_DW_LEN_DWORD 4
+#define MI_FLUSH_DW (0x26 << 23 | 1)
+#define MI_FLUSH_CCS (1 << 16)
+#define MI_FLUSH_LLC (1 << 9)
+#define MI_INVALIDATE_TLB (1 << 18)
+
+/* XY_BLOCK_COPY_BLT instruction has 22 bit groups 1 DWORD each */
+#define XY_BLOCK_COPY_BLT_LEN_DWORD 22
+#define BLOCK_COPY_BLT_CMD (2 << 29 | 0x41 << 22 | 0x14)
+#define COMPRESSION_ENABLE (1 << 29)
+#define AUX_CCS_E (5 << 18)
+#define FULL_RESOLVE (1 << 12)
+#define PARTIAL_RESOLVE (2 << 12)
+#define TILE_4_FORMAT (2 << 30)
+#define TILE_4_WIDTH (128)
+#define TILE_4_WIDTH_DWORD ((128 >> 2) - 1)
+#define TILE_4_HEIGHT (32)
+#define SURFACE_TYPE_2D (1 << 29)
+
+#define DEST_Y2_COORDINATE_SHIFT (16)
+#define DEST_MEM_TYPE_SHIFT (31)
+#define SRC_MEM_TYPE_SHIFT (31)
+#define DEST_SURF_WIDTH_SHIFT (14)
+#define SRC_SURF_WIDTH_SHIFT (14)
+
+#define XY_CTRL_SURF_COPY_BLT (2 << 29 | 0x48 << 22 | 3)
+#define SRC_ACCESS_TYPE_SHIFT 21
+#define DST_ACCESS_TYPE_SHIFT 20
+#define CCS_SIZE_SHIFT 8
+#define MI_INSTR(opcode, flags) (((opcode) << 23) | (flags))
+#define MI_ARB_CHECK MI_INSTR(0x05, 0)
+#define NUM_CCS_BLKS_PER_XFER 1024
+#define INDIRECT_ACCESS 0
+#define DIRECT_ACCESS 1
+
+#define BATCH_SIZE 4096
+#define BOSIZE_MIN (4 * 1024)
+#define BOSIZE_MAX (4 * 1024 * 1024)
+#define CCS_RATIO 256
+
+#define MEM_TYPE_SYS 1
+#define MEM_TYPE_LOCAL 0
+
+int xy_block_copy_blt(int fd, uint32_t cmd,
+ uint32_t *batch_buf,
+ uint32_t src, uint32_t dst,
+ uint32_t length, int mode,
+ struct intel_execution_engine2 *e);
+
+int xy_ctrl_surf_copy_blt(int fd, uint32_t cmd,
+ uint32_t *batch_buf,
+ uint32_t src, uint32_t dst,
+ uint32_t length, bool writetodev,
+ struct intel_execution_engine2 *e);
+
+int xy_block_copy_blt_ctx(int fd, uint32_t cmd,
+ uint32_t *batch_buf,
+ uint32_t src, uint32_t dst,
+ uint32_t length, int mode, uint32_t ctx);
diff --git a/lib/i915/intel_mocs.c b/lib/i915/intel_mocs.c
new file mode 100644
index 000000000..cbb1cc695
--- /dev/null
+++ b/lib/i915/intel_mocs.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright © 2021 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:
+ * Apoorva Singh <apoorva1.singh at intel.com>
+ *
+ */
+#include "igt.h"
+#include "i915/gem.h"
+#include "intel_mocs.h"
+
+static void get_mocs_index(int fd, struct drm_i915_mocs_index *mocs)
+{
+ uint16_t devid = intel_get_drm_devid(fd);
+
+ /*
+ * Gen >= 12 onwards don't have a setting for PTE,
+ * so using I915_MOCS_PTE as mocs index may leads to
+ * some undefined MOCS behavior.
+ * Correct MOCS index should be referred from BSPCES
+ * and programmed accordingly.
+ * This helper function is providing current UC as well
+ * as WB MOCS index based on platform.
+
+ */
+ if (IS_DG1(devid)) {
+ mocs->uc_index = 1;
+ mocs->wb_index = 5;
+ } else if (IS_GEN12(devid)) {
+ mocs->uc_index = 3;
+ mocs->wb_index = 2;
+ } else {
+ mocs->uc_index = I915_MOCS_PTE;
+ mocs->wb_index = I915_MOCS_CACHED;
+ }
+}
+
+/* BitField [6:1] represents index to MOCS Tables
+ * BitField [0] represents Encryption/Decryption
+ */
+
+uint8_t intel_get_wb_mocs(int fd)
+{
+ struct drm_i915_mocs_index mocs;
+
+ get_mocs_index(fd, &mocs);
+ return mocs.wb_index << 1;
+}
+
+uint8_t intel_get_uc_mocs(int fd)
+{
+ struct drm_i915_mocs_index mocs;
+
+ get_mocs_index(fd, &mocs);
+ return mocs.uc_index << 1;
+}
diff --git a/lib/i915/intel_mocs.h b/lib/i915/intel_mocs.h
new file mode 100644
index 000000000..8289ab1f7
--- /dev/null
+++ b/lib/i915/intel_mocs.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright © 2021 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:
+ * Apoorva Singh <apoorva1.singh at intel.com>
+ *
+ */
+#ifndef _INTEL_MOCS_H
+#define _INTEL_MOCS_H
+
+#define XY_FAST_COLOR_BLT_MOCS_SHIFT 21
+#define XY_BLOCK_COPY_BLT_MOCS_SHIFT 21
+#define XY_FAST_COPY_BLT_MOCS_SHIFT 17
+#define XY_CTRL_SURF_COPY_BLT_MOCS_SHIFT 25
+#define MEM_COPY_MOCS_SHIFT 25
+
+struct drm_i915_mocs_index {
+ uint8_t uc_index;
+ uint8_t wb_index;
+};
+
+uint8_t intel_get_wb_mocs(int fd);
+uint8_t intel_get_uc_mocs(int fd);
+#endif /* _INTEL_MOCS_H */
diff --git a/lib/meson.build b/lib/meson.build
index 297b0ad26..525d62f9a 100644
--- a/lib/meson.build
+++ b/lib/meson.build
@@ -11,6 +11,8 @@ lib_sources = [
'i915/gem_mman.c',
'i915/gem_vm.c',
'i915/intel_memory_region.c',
+ 'i915/intel_mocs.c',
+ 'i915/i915_blt.c',
'igt_collection.c',
'igt_color_encoding.c',
'igt_debugfs.c',
--
2.26.0
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