| /* |
| * Copyright (c) 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. |
| */ |
| |
| #include <assert.h> |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| #include <xf86drm.h> |
| #include <xf86drmMode.h> |
| |
| #include "drv_priv.h" |
| #include "helpers.h" |
| #include "util.h" |
| |
| int drv_bpp_from_format(uint32_t format, size_t plane) |
| { |
| assert(plane < drv_num_planes_from_format(format)); |
| |
| switch (format) { |
| case DRM_FORMAT_BGR233: |
| case DRM_FORMAT_C8: |
| case DRM_FORMAT_R8: |
| case DRM_FORMAT_RGB332: |
| case DRM_FORMAT_YVU420: |
| return 8; |
| |
| /* |
| * NV12 is laid out as follows. Each letter represents a byte. |
| * Y plane: |
| * Y0_0, Y0_1, Y0_2, Y0_3, ..., Y0_N |
| * Y1_0, Y1_1, Y1_2, Y1_3, ..., Y1_N |
| * ... |
| * YM_0, YM_1, YM_2, YM_3, ..., YM_N |
| * CbCr plane: |
| * Cb01_01, Cr01_01, Cb01_23, Cr01_23, ..., Cb01_(N-1)N, Cr01_(N-1)N |
| * Cb23_01, Cr23_01, Cb23_23, Cr23_23, ..., Cb23_(N-1)N, Cr23_(N-1)N |
| * ... |
| * Cb(M-1)M_01, Cr(M-1)M_01, ..., Cb(M-1)M_(N-1)N, Cr(M-1)M_(N-1)N |
| * |
| * Pixel (0, 0) requires Y0_0, Cb01_01 and Cr01_01. Pixel (0, 1) requires |
| * Y0_1, Cb01_01 and Cr01_01. So for a single pixel, 2 bytes of luma data |
| * are required. |
| */ |
| case DRM_FORMAT_NV12: |
| return (plane == 0) ? 8 : 16; |
| |
| case DRM_FORMAT_ABGR1555: |
| case DRM_FORMAT_ABGR4444: |
| case DRM_FORMAT_ARGB1555: |
| case DRM_FORMAT_ARGB4444: |
| case DRM_FORMAT_BGR565: |
| case DRM_FORMAT_BGRA4444: |
| case DRM_FORMAT_BGRA5551: |
| case DRM_FORMAT_BGRX4444: |
| case DRM_FORMAT_BGRX5551: |
| case DRM_FORMAT_GR88: |
| case DRM_FORMAT_RG88: |
| case DRM_FORMAT_RGB565: |
| case DRM_FORMAT_RGBA4444: |
| case DRM_FORMAT_RGBA5551: |
| case DRM_FORMAT_RGBX4444: |
| case DRM_FORMAT_RGBX5551: |
| case DRM_FORMAT_UYVY: |
| case DRM_FORMAT_VYUY: |
| case DRM_FORMAT_XBGR1555: |
| case DRM_FORMAT_XBGR4444: |
| case DRM_FORMAT_XRGB1555: |
| case DRM_FORMAT_XRGB4444: |
| case DRM_FORMAT_YUYV: |
| case DRM_FORMAT_YVYU: |
| return 16; |
| |
| case DRM_FORMAT_BGR888: |
| case DRM_FORMAT_RGB888: |
| return 24; |
| |
| case DRM_FORMAT_ABGR2101010: |
| case DRM_FORMAT_ABGR8888: |
| case DRM_FORMAT_ARGB2101010: |
| case DRM_FORMAT_ARGB8888: |
| case DRM_FORMAT_AYUV: |
| case DRM_FORMAT_BGRA1010102: |
| case DRM_FORMAT_BGRA8888: |
| case DRM_FORMAT_BGRX1010102: |
| case DRM_FORMAT_BGRX8888: |
| case DRM_FORMAT_RGBA1010102: |
| case DRM_FORMAT_RGBA8888: |
| case DRM_FORMAT_RGBX1010102: |
| case DRM_FORMAT_RGBX8888: |
| case DRM_FORMAT_XBGR2101010: |
| case DRM_FORMAT_XBGR8888: |
| case DRM_FORMAT_XRGB2101010: |
| case DRM_FORMAT_XRGB8888: |
| return 32; |
| } |
| |
| fprintf(stderr, "drv: UNKNOWN FORMAT %d\n", format); |
| return 0; |
| } |
| |
| /* |
| * This function fills in the buffer object given driver aligned dimensions |
| * and a format. This function assumes there is just one kernel buffer per |
| * buffer object. |
| */ |
| int drv_bo_from_format(struct bo *bo, uint32_t width, uint32_t height, |
| uint32_t format) |
| { |
| |
| size_t p, num_planes; |
| uint32_t offset = 0; |
| |
| num_planes = drv_num_planes_from_format(format); |
| assert(num_planes); |
| |
| for (p = 0; p < num_planes; p++) { |
| bo->strides[p] = drv_stride_from_format(format, width, p); |
| bo->sizes[p] = drv_size_from_format(format, bo->strides[p], |
| height, p); |
| bo->offsets[p] = offset; |
| offset += bo->sizes[p]; |
| } |
| |
| bo->total_size = bo->offsets[bo->num_planes - 1] + |
| bo->sizes[bo->num_planes - 1]; |
| |
| return 0; |
| } |
| |
| int drv_dumb_bo_create(struct bo *bo, uint32_t width, uint32_t height, |
| uint32_t format, uint32_t flags) |
| { |
| struct drm_mode_create_dumb create_dumb; |
| int ret; |
| |
| /* Only single-plane formats are supported */ |
| assert(drv_num_planes_from_format(format) == 1); |
| |
| memset(&create_dumb, 0, sizeof(create_dumb)); |
| create_dumb.height = height; |
| create_dumb.width = width; |
| create_dumb.bpp = drv_bpp_from_format(format, 0); |
| create_dumb.flags = 0; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_MODE_CREATE_DUMB failed\n"); |
| return ret; |
| } |
| |
| bo->handles[0].u32 = create_dumb.handle; |
| bo->offsets[0] = 0; |
| bo->total_size = bo->sizes[0] = create_dumb.size; |
| bo->strides[0] = create_dumb.pitch; |
| |
| return 0; |
| } |
| |
| int drv_dumb_bo_destroy(struct bo *bo) |
| { |
| struct drm_mode_destroy_dumb destroy_dumb; |
| int ret; |
| |
| memset(&destroy_dumb, 0, sizeof(destroy_dumb)); |
| destroy_dumb.handle = bo->handles[0].u32; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_MODE_DESTROY_DUMB failed " |
| "(handle=%x)\n", bo->handles[0].u32); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| int drv_gem_bo_destroy(struct bo *bo) |
| { |
| struct drm_gem_close gem_close; |
| int ret, error = 0; |
| size_t plane, i; |
| |
| for (plane = 0; plane < bo->num_planes; plane++) { |
| for (i = 0; i < plane; i++) |
| if (bo->handles[i].u32 == bo->handles[plane].u32) |
| break; |
| /* Make sure close hasn't already been called on this handle */ |
| if (i != plane) |
| continue; |
| |
| memset(&gem_close, 0, sizeof(gem_close)); |
| gem_close.handle = bo->handles[plane].u32; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_GEM_CLOSE failed " |
| "(handle=%x) error %d\n", |
| bo->handles[plane].u32, ret); |
| error = ret; |
| } |
| } |
| |
| return error; |
| } |
| |
| void *drv_dumb_bo_map(struct bo *bo, struct map_info *data, size_t plane) |
| { |
| int ret; |
| size_t i; |
| struct drm_mode_map_dumb map_dumb; |
| |
| memset(&map_dumb, 0, sizeof(map_dumb)); |
| map_dumb.handle = bo->handles[plane].u32; |
| |
| ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb); |
| if (ret) { |
| fprintf(stderr, "drv: DRM_IOCTL_MODE_MAP_DUMB failed \n"); |
| return MAP_FAILED; |
| } |
| |
| for (i = 0; i < bo->num_planes; i++) |
| if (bo->handles[i].u32 == bo->handles[plane].u32) |
| data->length += bo->sizes[i]; |
| |
| return mmap(0, data->length, PROT_READ | PROT_WRITE, MAP_SHARED, |
| bo->drv->fd, map_dumb.offset); |
| } |
| |
| uintptr_t drv_get_reference_count(struct driver *drv, struct bo *bo, |
| size_t plane) |
| { |
| void *count; |
| uintptr_t num = 0; |
| |
| if (!drmHashLookup(drv->buffer_table, bo->handles[plane].u32, &count)) |
| num = (uintptr_t) (count); |
| |
| return num; |
| } |
| |
| void drv_increment_reference_count(struct driver *drv, struct bo *bo, |
| size_t plane) |
| { |
| uintptr_t num = drv_get_reference_count(drv, bo, plane); |
| |
| /* If a value isn't in the table, drmHashDelete is a no-op */ |
| drmHashDelete(drv->buffer_table, bo->handles[plane].u32); |
| drmHashInsert(drv->buffer_table, bo->handles[plane].u32, |
| (void *) (num + 1)); |
| } |
| |
| void drv_decrement_reference_count(struct driver *drv, struct bo *bo, |
| size_t plane) |
| { |
| uintptr_t num = drv_get_reference_count(drv, bo, plane); |
| |
| drmHashDelete(drv->buffer_table, bo->handles[plane].u32); |
| |
| if (num > 0) |
| drmHashInsert(drv->buffer_table, bo->handles[plane].u32, |
| (void *) (num - 1)); |
| } |
| |
| uint32_t drv_log_base2(uint32_t value) |
| { |
| int ret = 0; |
| |
| while (value >>= 1) |
| ++ret; |
| |
| return ret; |
| } |
| |
| /* Inserts a combination into list -- caller should have lock on driver. */ |
| void drv_insert_supported_combination(struct driver *drv, uint32_t format, |
| uint64_t usage, uint64_t modifier) |
| { |
| struct combination_list_element *elem; |
| |
| elem = calloc(1, sizeof(*elem)); |
| elem->combination.format = format; |
| elem->combination.modifier = modifier; |
| elem->combination.usage = usage; |
| LIST_ADD(&elem->link, &drv->backend->combinations); |
| } |
| |
| void drv_insert_combinations(struct driver *drv, struct supported_combination *combos, |
| uint32_t size) |
| { |
| unsigned int i; |
| |
| pthread_mutex_lock(&drv->driver_lock); |
| |
| for (i = 0; i < size; i++) |
| drv_insert_supported_combination(drv, combos[i].format, |
| combos[i].usage, |
| combos[i].modifier); |
| |
| pthread_mutex_unlock(&drv->driver_lock); |
| } |
| |
| void drv_modify_supported_combination(struct driver *drv, uint32_t format, |
| uint64_t usage, uint64_t modifier) |
| { |
| /* |
| * Attempts to add the specified usage to an existing {format, modifier} |
| * pair. If the pair is not present, a new combination is created. |
| */ |
| int found = 0; |
| |
| pthread_mutex_lock(&drv->driver_lock); |
| |
| list_for_each_entry(struct combination_list_element, |
| elem, &drv->backend->combinations, link) { |
| if (elem->combination.format == format && |
| elem->combination.modifier == modifier) { |
| elem->combination.usage |= usage; |
| found = 1; |
| } |
| } |
| |
| |
| if (!found) |
| drv_insert_supported_combination(drv, format, usage, modifier); |
| |
| pthread_mutex_unlock(&drv->driver_lock); |
| } |
| |
| int drv_add_kms_flags(struct driver *drv) |
| { |
| int ret; |
| uint32_t i, j; |
| uint64_t flag, usage; |
| drmModePlanePtr plane; |
| drmModePropertyPtr prop; |
| drmModePlaneResPtr resources; |
| drmModeObjectPropertiesPtr props; |
| |
| /* |
| * All current drivers can scanout XRGB8888/ARGB8888 as a primary plane. |
| * Some older kernel versions can only return overlay planes, so add the |
| * combination here. Note that the kernel disregards the alpha component |
| * of ARGB unless it's an overlay plane. |
| */ |
| drv_modify_supported_combination(drv, DRM_FORMAT_XRGB8888, |
| BO_USE_SCANOUT, 0); |
| drv_modify_supported_combination(drv, DRM_FORMAT_ARGB8888, |
| BO_USE_SCANOUT, 0); |
| |
| /* |
| * The ability to return universal planes is only complete on |
| * ChromeOS kernel versions >= v3.18. The SET_CLIENT_CAP ioctl |
| * therefore might return an error code, so don't check it. If it |
| * fails, it'll just return the plane list as overlay planes, which is |
| * fine in our case (our drivers already have cursor bits set). |
| * modetest in libdrm does the same thing. |
| */ |
| drmSetClientCap(drv->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1); |
| |
| resources = drmModeGetPlaneResources(drv->fd); |
| if (!resources) |
| goto err; |
| |
| for (i = 0; i < resources->count_planes; i++) { |
| |
| plane = drmModeGetPlane(drv->fd, resources->planes[i]); |
| |
| if (!plane) |
| goto err; |
| |
| props = drmModeObjectGetProperties(drv->fd, plane->plane_id, |
| DRM_MODE_OBJECT_PLANE); |
| if (!props) |
| goto err; |
| |
| for (j = 0; j < props->count_props; j++) { |
| |
| prop = drmModeGetProperty(drv->fd, props->props[j]); |
| if (prop) { |
| if (strcmp(prop->name, "type") == 0) { |
| flag = props->prop_values[j]; |
| } |
| drmModeFreeProperty(prop); |
| } |
| } |
| |
| switch (flag) { |
| case DRM_PLANE_TYPE_OVERLAY: |
| case DRM_PLANE_TYPE_PRIMARY: |
| usage = BO_USE_SCANOUT; |
| break; |
| case DRM_PLANE_TYPE_CURSOR: |
| usage = BO_USE_CURSOR; |
| break; |
| default: |
| assert(0); |
| } |
| |
| for (j = 0; j < plane->count_formats; j++) |
| drv_modify_supported_combination(drv, plane->formats[j], |
| usage, 0); |
| |
| drmModeFreeObjectProperties(props); |
| drmModeFreePlane(plane); |
| |
| } |
| |
| drmModeFreePlaneResources(resources); |
| return 0; |
| |
| err: |
| ret = -1; |
| return ret; |
| } |