blob: 255e7230df1fe55367e1997f8073c06bec60870e [file] [log] [blame] [edit]
/*
* Copyright 2018 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_MSM
#include <assert.h>
#include <dlfcn.h>
#include <drm_fourcc.h>
#include <errno.h>
#include <inttypes.h>
#include <msm_drm.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <sys/mman.h>
#include <xf86drm.h>
#include "drv_helpers.h"
#include "drv_priv.h"
#include "util.h"
/* Alignment values are based on SDM845 Gfx IP */
#define DEFAULT_ALIGNMENT 64
#define BUFFER_SIZE_ALIGN 4096
#define VENUS_STRIDE_ALIGN 128
#define VENUS_SCANLINE_ALIGN 16
#define NV12_LINEAR_PADDING (12 * 1024)
#define NV12_UBWC_PADDING(y_stride) (MAX(16 * 1024, y_stride * 48))
#define MACROTILE_WIDTH_ALIGN 64
#define MACROTILE_HEIGHT_ALIGN 16
#define PLANE_SIZE_ALIGN 4096
#define MSM_UBWC_TILING 1
static const uint32_t render_target_formats[] = { DRM_FORMAT_ABGR8888, DRM_FORMAT_ARGB8888,
DRM_FORMAT_RGB565, DRM_FORMAT_XBGR8888,
DRM_FORMAT_XRGB8888, DRM_FORMAT_ABGR2101010,
DRM_FORMAT_ABGR16161616F };
static const uint32_t texture_source_formats[] = { DRM_FORMAT_NV12, DRM_FORMAT_R8,
DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID,
DRM_FORMAT_P010 };
/*
* Each macrotile consists of m x n (mostly 4 x 4) tiles.
* Pixel data pitch/stride is aligned with macrotile width.
* Pixel data height is aligned with macrotile height.
* Entire pixel data buffer is aligned with 4k(bytes).
*/
static uint32_t get_ubwc_meta_size(uint32_t width, uint32_t height, uint32_t tile_width,
uint32_t tile_height)
{
uint32_t macrotile_width, macrotile_height;
macrotile_width = DIV_ROUND_UP(width, tile_width);
macrotile_height = DIV_ROUND_UP(height, tile_height);
// Align meta buffer width to 64 blocks
macrotile_width = ALIGN(macrotile_width, MACROTILE_WIDTH_ALIGN);
// Align meta buffer height to 16 blocks
macrotile_height = ALIGN(macrotile_height, MACROTILE_HEIGHT_ALIGN);
return ALIGN(macrotile_width * macrotile_height, PLANE_SIZE_ALIGN);
}
static unsigned get_pitch_alignment(struct bo *bo)
{
switch (bo->meta.format) {
case DRM_FORMAT_NV12:
return VENUS_STRIDE_ALIGN;
case DRM_FORMAT_YVU420:
case DRM_FORMAT_YVU420_ANDROID:
/* TODO other YUV formats? */
/* Something (in the video stack?) assumes the U/V planes can use
* half the pitch as the Y plane.. to componsate, double the
* alignment:
*/
return 2 * DEFAULT_ALIGNMENT;
default:
return DEFAULT_ALIGNMENT;
}
}
static void msm_calculate_layout(struct bo *bo)
{
uint32_t width, height;
width = bo->meta.width;
height = bo->meta.height;
/* NV12 format requires extra padding with platform
* specific alignments for venus driver
*/
if (bo->meta.format == DRM_FORMAT_NV12 || bo->meta.format == DRM_FORMAT_P010) {
uint32_t y_stride, uv_stride, y_scanline, uv_scanline, y_plane, uv_plane, size,
extra_padding;
// P010 has the same layout as NV12. The difference is that each
// pixel in P010 takes 2 bytes, while in NV12 each pixel takes 1 byte.
if (bo->meta.format == DRM_FORMAT_P010)
width *= 2;
y_stride = ALIGN(width, VENUS_STRIDE_ALIGN);
uv_stride = ALIGN(width, VENUS_STRIDE_ALIGN);
y_scanline = ALIGN(height, VENUS_SCANLINE_ALIGN * 2);
uv_scanline = ALIGN(DIV_ROUND_UP(height, 2),
VENUS_SCANLINE_ALIGN * (bo->meta.tiling ? 2 : 1));
y_plane = y_stride * y_scanline;
uv_plane = uv_stride * uv_scanline;
if (bo->meta.tiling == MSM_UBWC_TILING) {
y_plane = ALIGN(y_plane, PLANE_SIZE_ALIGN);
uv_plane = ALIGN(uv_plane, PLANE_SIZE_ALIGN);
y_plane += get_ubwc_meta_size(width, height, 32, 8);
uv_plane += get_ubwc_meta_size(width >> 1, height >> 1, 16, 8);
extra_padding = NV12_UBWC_PADDING(y_stride);
} else {
extra_padding = NV12_LINEAR_PADDING;
}
bo->meta.strides[0] = y_stride;
bo->meta.sizes[0] = y_plane;
bo->meta.offsets[1] = y_plane;
bo->meta.strides[1] = uv_stride;
size = y_plane + uv_plane + extra_padding;
bo->meta.total_size = ALIGN(size, BUFFER_SIZE_ALIGN);
bo->meta.sizes[1] = bo->meta.total_size - bo->meta.sizes[0];
} else {
uint32_t stride, alignw, alignh;
alignw = ALIGN(width, get_pitch_alignment(bo));
/* HAL_PIXEL_FORMAT_YV12 requires that the buffer's height not be aligned.
DRM_FORMAT_R8 of height one is used for JPEG camera output, so don't
height align that. */
if (bo->meta.format == DRM_FORMAT_YVU420_ANDROID ||
(bo->meta.format == DRM_FORMAT_R8 && height == 1)) {
alignh = height;
} else {
alignh = ALIGN(height, DEFAULT_ALIGNMENT);
}
stride = drv_stride_from_format(bo->meta.format, alignw, 0);
/* Calculate size and assign stride, size, offset to each plane based on format */
drv_bo_from_format(bo, stride, alignh, bo->meta.format);
/* For all RGB UBWC formats */
if (bo->meta.tiling == MSM_UBWC_TILING) {
bo->meta.sizes[0] += get_ubwc_meta_size(width, height, 16, 4);
bo->meta.total_size = bo->meta.sizes[0];
assert(IS_ALIGNED(bo->meta.total_size, BUFFER_SIZE_ALIGN));
}
}
}
static bool is_ubwc_fmt(uint32_t format)
{
switch (format) {
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_ABGR8888:
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
#ifndef QCOM_DISABLE_COMPRESSED_NV12
case DRM_FORMAT_NV12:
#endif
return 1;
default:
return 0;
}
}
static void msm_add_ubwc_combinations(struct driver *drv, const uint32_t *formats,
uint32_t num_formats, struct format_metadata *metadata,
uint64_t use_flags)
{
for (uint32_t i = 0; i < num_formats; i++) {
if (is_ubwc_fmt(formats[i])) {
struct combination combo = { .format = formats[i],
.metadata = *metadata,
.use_flags = use_flags };
drv_array_append(drv->combos, &combo);
}
}
}
/**
* Check for buggy apps that are known to not support modifiers, to avoid surprising them
* with a UBWC buffer.
*/
static bool should_avoid_ubwc(void)
{
#ifndef __ANDROID__
/* waffle is buggy and, requests a renderable buffer (which on qcom platforms, we
* want to use UBWC), and then passes it to the kernel discarding the modifier.
* So mesa ends up correctly rendering to as tiled+compressed, but kernel tries
* to display as linear. Other platforms do not see this issue, simply because
* they only use compressed (ex, AFBC) with the BO_USE_SCANOUT flag.
*
* See b/163137550
*/
if (dlsym(RTLD_DEFAULT, "waffle_display_connect")) {
drv_log("WARNING: waffle detected, disabling UBWC\n");
return true;
}
/* The video_decode_accelerator_tests needs to read back the frames
* to verify they are correct. The frame verification relies on
* computing the MD5 of the video frame. UBWC results in a different
* MD5. This turns off UBWC for gtest until a proper frame
* comparison can be made
* Rely on the same mechanism that waffle is using, but this time check
* for a dynamic library function that is present in chrome, but missing
* in gtest. Cups is not loaded for video tests.
*
* See b/171260705
*/
if (!dlsym(RTLD_DEFAULT, "cupsFilePrintf")) {
drv_log("WARNING: gtest detected, disabling UBWC\n");
return true;
}
#endif
return false;
}
static int msm_init(struct driver *drv)
{
struct format_metadata metadata;
uint64_t render_use_flags = BO_USE_RENDER_MASK | BO_USE_SCANOUT;
uint64_t texture_use_flags = BO_USE_TEXTURE_MASK | BO_USE_HW_VIDEO_DECODER;
/*
* NOTE: we actually could use tiled in the BO_USE_FRONT_RENDERING case,
* if we had a modifier for tiled-but-not-compressed. But we *cannot* use
* compressed in this case because the UBWC flags/meta data can be out of
* sync with pixel data while the GPU is writing a frame out to memory.
*/
uint64_t sw_flags =
(BO_USE_RENDERSCRIPT | BO_USE_SW_MASK | BO_USE_LINEAR | BO_USE_FRONT_RENDERING);
drv_add_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
&LINEAR_METADATA, render_use_flags);
drv_add_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
&LINEAR_METADATA, texture_use_flags);
/* The camera stack standardizes on NV12 for YUV buffers. */
/* YVU420 and NV12 formats for camera, display and encoding. */
drv_modify_combination(drv, DRM_FORMAT_NV12, &LINEAR_METADATA,
BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_SCANOUT |
BO_USE_HW_VIDEO_ENCODER);
/*
* R8 format is used for Android's HAL_PIXEL_FORMAT_BLOB and is used for JPEG snapshots
* from camera and input/output from hardware decoder/encoder.
*/
drv_modify_combination(drv, DRM_FORMAT_R8, &LINEAR_METADATA,
BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE | BO_USE_HW_VIDEO_DECODER |
BO_USE_HW_VIDEO_ENCODER);
/*
* Android also frequently requests YV12 formats for some camera implementations
* (including the external provider implmenetation).
*/
drv_modify_combination(drv, DRM_FORMAT_YVU420_ANDROID, &LINEAR_METADATA,
BO_USE_CAMERA_READ | BO_USE_CAMERA_WRITE);
/* Android CTS tests require this. */
drv_add_combination(drv, DRM_FORMAT_BGR888, &LINEAR_METADATA, BO_USE_SW_MASK);
#ifdef SC_7280
drv_modify_combination(drv, DRM_FORMAT_P010, &LINEAR_METADATA,
BO_USE_SCANOUT | BO_USE_HW_VIDEO_ENCODER);
#endif
drv_modify_linear_combinations(drv);
if (should_avoid_ubwc() || !drv->compression)
return 0;
metadata.tiling = MSM_UBWC_TILING;
metadata.priority = 2;
metadata.modifier = DRM_FORMAT_MOD_QCOM_COMPRESSED;
render_use_flags &= ~sw_flags;
texture_use_flags &= ~sw_flags;
msm_add_ubwc_combinations(drv, render_target_formats, ARRAY_SIZE(render_target_formats),
&metadata, render_use_flags);
msm_add_ubwc_combinations(drv, texture_source_formats, ARRAY_SIZE(texture_source_formats),
&metadata, texture_use_flags);
drv_modify_combination(drv, DRM_FORMAT_NV12, &metadata,
BO_USE_SCANOUT | BO_USE_HW_VIDEO_ENCODER);
return 0;
}
static int msm_bo_create_for_modifier(struct bo *bo, uint32_t width, uint32_t height,
uint32_t format, const uint64_t modifier)
{
struct drm_msm_gem_new req = { 0 };
int ret;
size_t i;
bo->meta.tiling = (modifier == DRM_FORMAT_MOD_QCOM_COMPRESSED) ? MSM_UBWC_TILING : 0;
msm_calculate_layout(bo);
req.flags = MSM_BO_WC | MSM_BO_SCANOUT;
req.size = bo->meta.total_size;
ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MSM_GEM_NEW, &req);
if (ret) {
drv_log("DRM_IOCTL_MSM_GEM_NEW failed with %s\n", strerror(errno));
return -errno;
}
/*
* Though we use only one plane, we need to set handle for
* all planes to pass kernel checks
*/
for (i = 0; i < bo->meta.num_planes; i++)
bo->handles[i].u32 = req.handle;
bo->meta.format_modifier = modifier;
return 0;
}
static int msm_bo_create_with_modifiers(struct bo *bo, uint32_t width, uint32_t height,
uint32_t format, const uint64_t *modifiers, uint32_t count)
{
static const uint64_t modifier_order[] = {
DRM_FORMAT_MOD_QCOM_COMPRESSED,
DRM_FORMAT_MOD_LINEAR,
};
uint64_t modifier =
drv_pick_modifier(modifiers, count, modifier_order, ARRAY_SIZE(modifier_order));
if (!bo->drv->compression && modifier == DRM_FORMAT_MOD_QCOM_COMPRESSED)
modifier = DRM_FORMAT_MOD_LINEAR;
return msm_bo_create_for_modifier(bo, width, height, format, modifier);
}
/* msm_bo_create will create linear buffers for now */
static int msm_bo_create(struct bo *bo, uint32_t width, uint32_t height, uint32_t format,
uint64_t flags)
{
struct combination *combo = drv_get_combination(bo->drv, format, flags);
if (!combo) {
drv_log("invalid format = %d, flags = %" PRIx64 " combination\n", format, flags);
return -EINVAL;
}
return msm_bo_create_for_modifier(bo, width, height, format, combo->metadata.modifier);
}
static void *msm_bo_map(struct bo *bo, struct vma *vma, size_t plane, uint32_t map_flags)
{
int ret;
struct drm_msm_gem_info req = { 0 };
req.handle = bo->handles[0].u32;
ret = drmIoctl(bo->drv->fd, DRM_IOCTL_MSM_GEM_INFO, &req);
if (ret) {
drv_log("DRM_IOCLT_MSM_GEM_INFO failed with %s\n", strerror(errno));
return MAP_FAILED;
}
vma->length = bo->meta.total_size;
return mmap(0, bo->meta.total_size, drv_get_prot(map_flags), MAP_SHARED, bo->drv->fd,
req.offset);
}
const struct backend backend_msm = {
.name = "msm",
.init = msm_init,
.bo_create = msm_bo_create,
.bo_create_with_modifiers = msm_bo_create_with_modifiers,
.bo_destroy = drv_gem_bo_destroy,
.bo_import = drv_prime_bo_import,
.bo_map = msm_bo_map,
.bo_unmap = drv_bo_munmap,
.resolve_format_and_use_flags = drv_resolve_format_and_use_flags_helper,
};
#endif /* DRV_MSM */