diff options
| -rw-r--r-- | lib/i915/intel_mocs.c | 69 | ||||
| -rw-r--r-- | lib/i915/intel_mocs.h | 12 | ||||
| -rw-r--r-- | lib/meson.build | 1 |
3 files changed, 82 insertions, 0 deletions
diff --git a/lib/i915/intel_mocs.c b/lib/i915/intel_mocs.c new file mode 100644 index 00000000..df541ab0 --- /dev/null +++ b/lib/i915/intel_mocs.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2022 Intel Corporation + */ + +#include "igt.h" +#include "i915/gem.h" +#include "intel_mocs.h" + +#define DG1_MOCS_UC_IDX 1 +#define DG1_MOCS_WB_IDX 5 +#define DG2_MOCS_UC_IDX 1 +#define DG2_MOCS_WB_IDX 3 +#define GEN12_MOCS_UC_IDX 3 +#define GEN12_MOCS_WB_IDX 2 +#define XY_BLOCK_COPY_BLT_MOCS_SHIFT 21 +#define XY_CTRL_SURF_COPY_BLT_MOCS_SHIFT 25 + +struct drm_i915_mocs_index { + uint8_t uc_index; + uint8_t wb_index; +}; + +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. + * This helper function is providing current UC as well + * as WB MOCS index based on platform. + */ + if (IS_DG1(devid)) { + mocs->uc_index = DG1_MOCS_UC_IDX; + mocs->wb_index = DG1_MOCS_WB_IDX; + } else if (IS_DG2(devid)) { + mocs->uc_index = DG2_MOCS_UC_IDX; + mocs->wb_index = DG2_MOCS_WB_IDX; + + } else if (IS_GEN12(devid)) { + mocs->uc_index = GEN12_MOCS_UC_IDX; + mocs->wb_index = GEN12_MOCS_WB_IDX; + } 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 00000000..255eac0f --- /dev/null +++ b/lib/i915/intel_mocs.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2022 Intel Corporation + */ + +#ifndef _INTEL_MOCS_H +#define _INTEL_MOCS_H + +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 3e43316d..a5fe91dc 100644 --- a/lib/meson.build +++ b/lib/meson.build @@ -11,6 +11,7 @@ lib_sources = [ 'i915/gem_mman.c', 'i915/gem_vm.c', 'i915/intel_memory_region.c', + 'i915/intel_mocs.c', 'igt_collection.c', 'igt_color_encoding.c', 'igt_debugfs.c', |