| /* |
| * Copyright 2014 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifdef DRV_I915 |
| |
| #include <errno.h> |
| #include <i915_drm.h> |
| #include <intel_bufmgr.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <xf86drm.h> |
| |
| #include "drv_priv.h" |
| #include "helpers.h" |
| #include "util.h" |
| |
| static const uint32_t tileable_formats[] = { DRM_FORMAT_ARGB1555, DRM_FORMAT_ABGR8888, |
| DRM_FORMAT_ARGB8888, DRM_FORMAT_RGB565, |
| DRM_FORMAT_XBGR8888, DRM_FORMAT_XRGB1555, |
| DRM_FORMAT_XRGB8888, DRM_FORMAT_UYVY, |
| DRM_FORMAT_YUYV }; |
| |
| static const uint32_t linear_only_formats[] = { DRM_FORMAT_GR88, DRM_FORMAT_R8, DRM_FORMAT_YVU420, |
| DRM_FORMAT_YVU420_ANDROID }; |
| |
| struct i915_device { |
| int gen; |
| drm_intel_bufmgr *mgr; |
| uint32_t count; |
| }; |
| |
| struct i915_bo { |
| drm_intel_bo *ibos[DRV_MAX_PLANES]; |
| }; |
| |
| static int get_gen(int device_id) |
| { |
| const uint16_t gen3_ids[] = { 0x2582, 0x2592, 0x2772, 0x27A2, 0x27AE, |
| 0x29C2, 0x29B2, 0x29D2, 0xA001, 0xA011 }; |
| unsigned i; |
| for (i = 0; i < ARRAY_SIZE(gen3_ids); i++) |
| if (gen3_ids[i] == device_id) |
| return 3; |
| |
| return 4; |
| } |
| |
| static int i915_add_kms_item(struct driver *drv, const struct kms_item *item) |
| { |
| uint32_t i; |
| struct combination *combo; |
| |
| /* |
| * Older hardware can't scanout Y-tiled formats. Newer devices can, and |
| * report this functionality via format modifiers. |
| */ |
| for (i = 0; i < drv->backend->combos.size; i++) { |
| combo = &drv->backend->combos.data[i]; |
| if (combo->format == item->format) { |
| if ((combo->metadata.tiling == I915_TILING_Y && |
| item->modifier == I915_FORMAT_MOD_Y_TILED) || |
| (combo->metadata.tiling == I915_TILING_X && |
| item->modifier == I915_FORMAT_MOD_X_TILED)) { |
| combo->metadata.modifier = item->modifier; |
| combo->usage |= item->usage; |
| } else if (combo->metadata.tiling != I915_TILING_Y) { |
| combo->usage |= item->usage; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int i915_add_combinations(struct driver *drv) |
| { |
| int ret; |
| uint32_t i, num_items; |
| struct kms_item *items; |
| struct format_metadata metadata; |
| uint64_t flags = BO_COMMON_USE_MASK; |
| |
| metadata.tiling = I915_TILING_NONE; |
| metadata.priority = 1; |
| metadata.modifier = DRM_FORMAT_MOD_NONE; |
| |
| ret = drv_add_combinations(drv, linear_only_formats, ARRAY_SIZE(linear_only_formats), |
| &metadata, flags); |
| if (ret) |
| return ret; |
| |
| ret = drv_add_combinations(drv, tileable_formats, ARRAY_SIZE(tileable_formats), &metadata, |
| flags); |
| if (ret) |
| return ret; |
| |
| drv_modify_combination(drv, DRM_FORMAT_XRGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT); |
| drv_modify_combination(drv, DRM_FORMAT_ARGB8888, &metadata, BO_USE_CURSOR | BO_USE_SCANOUT); |
| |
| flags &= ~BO_USE_SW_WRITE_OFTEN; |
| flags &= ~BO_USE_SW_READ_OFTEN; |
| flags &= ~BO_USE_LINEAR; |
| |
| metadata.tiling = I915_TILING_X; |
| metadata.priority = 2; |
| |
| ret = drv_add_combinations(drv, tileable_formats, ARRAY_SIZE(tileable_formats), &metadata, |
| flags); |
| if (ret) |
| return ret; |
| |
| metadata.tiling = I915_TILING_Y; |
| metadata.priority = 3; |
| |
| ret = drv_add_combinations(drv, tileable_formats, ARRAY_SIZE(tileable_formats), &metadata, |
| flags); |
| if (ret) |
| return ret; |
| |
| items = drv_query_kms(drv, &num_items); |
| if (!items || !num_items) |
| return 0; |
| |
| for (i = 0; i < num_items; i++) { |
| ret = i915_add_kms_item(drv, &items[i]); |
| if (ret) { |
| free(items); |
| return ret; |
| } |
| } |
| |
| free(items); |
| return 0; |
| } |
| |
| static int i915_align_dimensions(struct bo *bo, uint32_t tiling, uint32_t *stride, |
| uint32_t *aligned_height) |
| { |
| struct i915_device *i915 = bo->drv->priv; |
| uint32_t horizontal_alignment = 4; |
| uint32_t vertical_alignment = 4; |
| |
| switch (tiling) { |
| default: |
| case I915_TILING_NONE: |
| horizontal_alignment = 64; |
| break; |
| |
| case I915_TILING_X: |
| horizontal_alignment = 512; |
| vertical_alignment = 8; |
| break; |
| |
| case I915_TILING_Y: |
| if (i915->gen == 3) { |
| horizontal_alignment = 512; |
| vertical_alignment = 8; |
| } else { |
| horizontal_alignment = 128; |
| vertical_alignment = 32; |
| } |
| break; |
| } |
| |
| *aligned_height = ALIGN(bo->height, vertical_alignment); |
| if (i915->gen > 3) { |
| *stride = ALIGN(*stride, horizontal_alignment); |
| } else { |
| while (*stride > horizontal_alignment) |
| horizontal_alignment <<= 1; |
| |
| *stride = horizontal_alignment; |
| } |
| |
| if (i915->gen <= 3 && *stride > 8192) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static int i915_init(struct driver *drv) |
| { |
| struct i915_device *i915_dev; |
| drm_i915_getparam_t get_param; |
| int device_id; |
| int ret; |
| |
| i915_dev = calloc(1, sizeof(*i915_dev)); |
| if (!i915_dev) |
| return -1; |
| |
| memset(&get_param, 0, sizeof(get_param)); |
| get_param.param = I915_PARAM_CHIPSET_ID; |
| get_param.value = &device_id; |
| ret = drmIoctl(drv->fd, DRM_IOCTL_I915_GETPARAM, &get_param); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_I915_GETPARAM failed\n"); |
| free(i915_dev); |
| return -EINVAL; |
| } |
| |
| i915_dev->gen = get_gen(device_id); |
| i915_dev->count = 0; |
| |
| i915_dev->mgr = drm_intel_bufmgr_gem_init(drv->fd, 16 * 1024); |
| if (!i915_dev->mgr) { |
| fprintf(stderr, "drv: drm_intel_bufmgr_gem_init failed\n"); |
| free(i915_dev); |
| return -EINVAL; |
| } |
| |
| drv->priv = i915_dev; |
| |
| return i915_add_combinations(drv); |
| } |
| |
| static void i915_close(struct driver *drv) |
| { |
| struct i915_device *i915_dev = drv->priv; |
| drm_intel_bufmgr_destroy(i915_dev->mgr); |
| free(i915_dev); |
| drv->priv = NULL; |
| } |
| |
| static int i915_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format, |
| uint32_t flags) |
| { |
| int ret; |
| size_t plane; |
| char name[20]; |
| uint32_t stride; |
| uint32_t tiling_mode; |
| struct i915_bo *i915_bo; |
| |
| stride = drv_stride_from_format(format, width, 0); |
| struct i915_device *i915_dev = (struct i915_device *)bo->drv->priv; |
| |
| if (flags & (BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN)) |
| tiling_mode = I915_TILING_NONE; |
| else if (flags & BO_USE_SCANOUT) |
| tiling_mode = I915_TILING_X; |
| else |
| tiling_mode = I915_TILING_Y; |
| |
| /* |
| * Align the Y plane to 128 bytes so the chroma planes would be aligned |
| * to 64 byte boundaries. This is an Intel HW requirement. |
| */ |
| if (format == DRM_FORMAT_YVU420 || format == DRM_FORMAT_YVU420_ANDROID) { |
| stride = ALIGN(stride, 128); |
| tiling_mode = I915_TILING_NONE; |
| } |
| |
| ret = i915_align_dimensions(bo, tiling_mode, &stride, &height); |
| if (ret) |
| return ret; |
| |
| drv_bo_from_format(bo, stride, height, format); |
| |
| snprintf(name, sizeof(name), "i915-buffer-%u", i915_dev->count); |
| i915_dev->count++; |
| |
| i915_bo = calloc(1, sizeof(*i915_bo)); |
| if (!i915_bo) |
| return -ENOMEM; |
| |
| bo->priv = i915_bo; |
| |
| i915_bo->ibos[0] = drm_intel_bo_alloc(i915_dev->mgr, name, bo->total_size, 0); |
| if (!i915_bo->ibos[0]) { |
| fprintf(stderr, "drv: drm_intel_bo_alloc failed"); |
| free(i915_bo); |
| bo->priv = NULL; |
| return -ENOMEM; |
| } |
| |
| for (plane = 0; plane < bo->num_planes; plane++) { |
| if (plane > 0) |
| drm_intel_bo_reference(i915_bo->ibos[0]); |
| |
| bo->handles[plane].u32 = i915_bo->ibos[0]->handle; |
| i915_bo->ibos[plane] = i915_bo->ibos[0]; |
| } |
| |
| bo->tiling = tiling_mode; |
| |
| ret = drm_intel_bo_set_tiling(i915_bo->ibos[0], &bo->tiling, bo->strides[0]); |
| |
| if (ret || bo->tiling != tiling_mode) { |
| fprintf(stderr, "drv: drm_intel_gem_bo_set_tiling failed errno=%x, stride=%x\n", |
| errno, bo->strides[0]); |
| /* Calls i915 bo destroy. */ |
| bo->drv->backend->bo_destroy(bo); |
| return -errno; |
| } |
| |
| return 0; |
| } |
| |
| static int i915_bo_destroy(struct bo *bo) |
| { |
| size_t plane; |
| struct i915_bo *i915_bo = bo->priv; |
| |
| for (plane = 0; plane < bo->num_planes; plane++) |
| drm_intel_bo_unreference(i915_bo->ibos[plane]); |
| |
| free(i915_bo); |
| bo->priv = NULL; |
| |
| return 0; |
| } |
| |
| static int i915_bo_import(struct bo *bo, struct drv_import_fd_data *data) |
| { |
| size_t plane; |
| uint32_t swizzling; |
| struct i915_bo *i915_bo; |
| struct i915_device *i915_dev = bo->drv->priv; |
| |
| i915_bo = calloc(1, sizeof(*i915_bo)); |
| if (!i915_bo) |
| return -ENOMEM; |
| |
| bo->priv = i915_bo; |
| |
| /* |
| * When self-importing, libdrm_intel increments the reference count |
| * on the drm_intel_bo. It also returns the same drm_intel_bo per GEM |
| * handle. Thus, we don't need to increase the reference count |
| * (i.e, drv_increment_reference_count) when importing with this |
| * backend. |
| */ |
| for (plane = 0; plane < bo->num_planes; plane++) { |
| |
| i915_bo->ibos[plane] = drm_intel_bo_gem_create_from_prime( |
| i915_dev->mgr, data->fds[plane], data->sizes[plane]); |
| |
| if (!i915_bo->ibos[plane]) { |
| /* |
| * Need to call GEM close on planes that were opened, |
| * if any. Adjust the num_planes variable to be the |
| * plane that failed, so GEM close will be called on |
| * planes before that plane. |
| */ |
| bo->num_planes = plane; |
| i915_bo_destroy(bo); |
| fprintf(stderr, "drv: i915: failed to import failed"); |
| return -EINVAL; |
| } |
| |
| bo->handles[plane].u32 = i915_bo->ibos[plane]->handle; |
| } |
| |
| if (drm_intel_bo_get_tiling(i915_bo->ibos[0], &bo->tiling, &swizzling)) { |
| fprintf(stderr, "drv: drm_intel_bo_get_tiling failed"); |
| i915_bo_destroy(bo); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static void *i915_bo_map(struct bo *bo, struct map_info *data, size_t plane) |
| { |
| int ret; |
| struct i915_bo *i915_bo = bo->priv; |
| |
| if (bo->tiling == I915_TILING_NONE) |
| /* TODO(gsingh): use bo_map flags to determine if we should |
| * enable writing. |
| */ |
| ret = drm_intel_bo_map(i915_bo->ibos[0], 1); |
| else |
| ret = drm_intel_gem_bo_map_gtt(i915_bo->ibos[0]); |
| |
| if (ret) { |
| fprintf(stderr, "drv: i915_bo_map failed."); |
| return MAP_FAILED; |
| } |
| |
| return i915_bo->ibos[0]->virtual; |
| } |
| |
| static int i915_bo_unmap(struct bo *bo, struct map_info *data) |
| { |
| int ret; |
| struct i915_bo *i915_bo = bo->priv; |
| |
| if (bo->tiling == I915_TILING_NONE) |
| ret = drm_intel_bo_unmap(i915_bo->ibos[0]); |
| else |
| ret = drm_intel_gem_bo_unmap_gtt(i915_bo->ibos[0]); |
| |
| return ret; |
| } |
| |
| static uint32_t i915_resolve_format(uint32_t format) |
| { |
| switch (format) { |
| case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED: |
| /*HACK: See b/28671744 */ |
| return DRM_FORMAT_XBGR8888; |
| case DRM_FORMAT_FLEX_YCbCr_420_888: |
| return DRM_FORMAT_YVU420_ANDROID; |
| default: |
| return format; |
| } |
| } |
| |
| struct backend backend_i915 = { |
| .name = "i915", |
| .init = i915_init, |
| .close = i915_close, |
| .bo_create = i915_bo_create, |
| .bo_destroy = i915_bo_destroy, |
| .bo_import = i915_bo_import, |
| .bo_map = i915_bo_map, |
| .bo_unmap = i915_bo_unmap, |
| .resolve_format = i915_resolve_format, |
| }; |
| |
| #endif |