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558 lines
18 KiB
558 lines
18 KiB
/**************************************************************************
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*
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* Copyright (C) 2019 Chromium.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE 1
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#endif
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#include <stdio.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <xf86drm.h>
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#include <unistd.h>
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#include "util/u_math.h"
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#include "util/u_memory.h"
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#include "pipe/p_state.h"
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#include "vrend_winsys.h"
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#include "vrend_winsys_gbm.h"
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#include "virgl_hw.h"
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#include "vrend_debug.h"
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struct planar_layout {
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size_t num_planes;
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int horizontal_subsampling[VIRGL_GBM_MAX_PLANES];
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int vertical_subsampling[VIRGL_GBM_MAX_PLANES];
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int bytes_per_pixel[VIRGL_GBM_MAX_PLANES];
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};
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struct format_conversion {
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uint32_t gbm_format;
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uint32_t virgl_format;
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};
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static const struct planar_layout packed_1bpp_layout = {
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.num_planes = 1,
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.horizontal_subsampling = { 1 },
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.vertical_subsampling = { 1 },
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.bytes_per_pixel = { 1 }
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};
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static const struct planar_layout packed_2bpp_layout = {
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.num_planes = 1,
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.horizontal_subsampling = { 1 },
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.vertical_subsampling = { 1 },
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.bytes_per_pixel = { 2 }
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};
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static const struct planar_layout packed_4bpp_layout = {
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.num_planes = 1,
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.horizontal_subsampling = { 1 },
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.vertical_subsampling = { 1 },
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.bytes_per_pixel = { 4 }
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};
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static const struct planar_layout packed_8bpp_layout = {
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.num_planes = 1,
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.horizontal_subsampling = { 1 },
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.vertical_subsampling = { 1 },
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.bytes_per_pixel = { 8 }
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};
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static const struct planar_layout biplanar_yuv_420_layout = {
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.num_planes = 2,
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.horizontal_subsampling = { 1, 2 },
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.vertical_subsampling = { 1, 2 },
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.bytes_per_pixel = { 1, 2 }
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};
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static const struct planar_layout triplanar_yuv_420_layout = {
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.num_planes = 3,
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.horizontal_subsampling = { 1, 2, 2 },
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.vertical_subsampling = { 1, 2, 2 },
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.bytes_per_pixel = { 1, 1, 1 }
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};
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static const struct format_conversion conversions[] = {
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{ GBM_FORMAT_RGB565, VIRGL_FORMAT_B5G6R5_UNORM },
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{ GBM_FORMAT_ARGB8888, VIRGL_FORMAT_B8G8R8A8_UNORM },
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{ GBM_FORMAT_XRGB8888, VIRGL_FORMAT_B8G8R8X8_UNORM },
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{ GBM_FORMAT_ABGR16161616F, VIRGL_FORMAT_R16G16B16A16_FLOAT },
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{ GBM_FORMAT_NV12, VIRGL_FORMAT_NV12 },
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{ GBM_FORMAT_ABGR8888, VIRGL_FORMAT_R8G8B8A8_UNORM},
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{ GBM_FORMAT_XBGR8888, VIRGL_FORMAT_R8G8B8X8_UNORM},
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{ GBM_FORMAT_R8, VIRGL_FORMAT_R8_UNORM},
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{ GBM_FORMAT_YVU420, VIRGL_FORMAT_YV12},
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{ GBM_FORMAT_ABGR8888, VIRGL_FORMAT_B8G8R8A8_UNORM_EMULATED},
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{ GBM_FORMAT_XBGR8888, VIRGL_FORMAT_B8G8R8X8_UNORM_EMULATED},
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};
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static int rendernode_open(void)
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{
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DIR *dir;
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int ret, fd;
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bool undesired_found;
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drmVersionPtr version;
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char *rendernode_name;
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struct dirent *dir_ent;
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const char *undesired[3] = { "vgem", "pvr", NULL };
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dir = opendir("/dev/dri");
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if (!dir)
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return -1;
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fd = -1;
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while ((dir_ent = readdir(dir))) {
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if (dir_ent->d_type != DT_CHR)
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continue;
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if (strncmp(dir_ent->d_name, "renderD", 7))
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continue;
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ret = asprintf(&rendernode_name, "/dev/dri/%s", dir_ent->d_name);
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if (ret < 0)
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goto out;
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fd = open(rendernode_name, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
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free(rendernode_name);
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if (fd < 0)
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continue;
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version = drmGetVersion(fd);
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if (!version) {
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close(fd);
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fd = -1;
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continue;
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}
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undesired_found = false;
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for (uint32_t i = 0; i < ARRAY_SIZE(undesired); i++) {
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if (undesired[i] && !strcmp(version->name, undesired[i]))
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undesired_found = true;
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}
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drmFreeVersion(version);
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if (undesired_found) {
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close(fd);
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fd = -1;
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continue;
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}
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break;
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}
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out:
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closedir(dir);
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return fd;
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}
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static const struct planar_layout *layout_from_format(uint32_t format)
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{
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switch (format) {
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case GBM_FORMAT_R8:
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return &packed_1bpp_layout;
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case GBM_FORMAT_YVU420:
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return &triplanar_yuv_420_layout;
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case GBM_FORMAT_NV12:
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return &biplanar_yuv_420_layout;
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case GBM_FORMAT_RGB565:
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return &packed_2bpp_layout;
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case GBM_FORMAT_ARGB8888:
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case GBM_FORMAT_XRGB8888:
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case GBM_FORMAT_ABGR8888:
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case GBM_FORMAT_XBGR8888:
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return &packed_4bpp_layout;
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case GBM_FORMAT_ABGR16161616F:
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return &packed_8bpp_layout;
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default:
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return NULL;
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}
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}
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#ifdef ENABLE_MINIGBM_ALLOCATION
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static void virgl_gbm_transfer_internal(uint32_t planar_bytes_per_pixel,
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uint32_t subsampled_width,
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uint32_t subsampled_height,
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uint32_t guest_plane_stride,
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uint32_t guest_resource_offset,
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uint32_t host_plane_stride, uint8_t *host_address,
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const struct iovec *iovecs, uint32_t num_iovecs,
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uint32_t direction)
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{
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bool next_iovec, next_line;
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uint32_t current_height, current_iovec, iovec_start_offset;
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current_height = current_iovec = iovec_start_offset = 0;
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while (current_height < subsampled_height && current_iovec < num_iovecs) {
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uint32_t iovec_size = iovecs[current_iovec].iov_len;
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uint32_t iovec_end_offset = iovec_start_offset + iovec_size;
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uint32_t box_start_offset = guest_resource_offset + current_height * guest_plane_stride;
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uint32_t box_end_offset = box_start_offset + subsampled_width * planar_bytes_per_pixel;
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uint32_t max_start = MAX2(iovec_start_offset, box_start_offset);
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uint32_t min_end = MIN2(iovec_end_offset, box_end_offset);
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if (max_start < min_end) {
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uint32_t offset_in_iovec = (max_start > iovec_start_offset) ?
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(max_start - iovec_start_offset) : 0;
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uint32_t copy_iovec_size = min_end - max_start;
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if (min_end >= iovec_end_offset) {
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next_iovec = true;
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next_line = false;
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} else {
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next_iovec = false;
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next_line = true;
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}
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uint8_t *guest_start = (uint8_t*)iovecs[current_iovec].iov_base + offset_in_iovec;
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uint8_t *host_start = host_address + (current_height * host_plane_stride) +
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(max_start - box_start_offset);
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if (direction == VIRGL_TRANSFER_TO_HOST)
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memcpy(host_start, guest_start, copy_iovec_size);
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else
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memcpy(guest_start, host_start, copy_iovec_size);
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} else {
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if (box_start_offset >= iovec_start_offset) {
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next_iovec = true;
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next_line = false;
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} else {
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next_iovec = false;
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next_line = true;
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}
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}
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if (next_iovec) {
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iovec_start_offset += iovec_size;
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current_iovec++;
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}
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if (next_line)
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current_height++;
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}
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}
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#endif /* ENABLE_MINIGBM_ALLOCATION */
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struct virgl_gbm *virgl_gbm_init(int fd)
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{
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struct virgl_gbm *gbm = calloc(1, sizeof(struct virgl_gbm));
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if (!gbm)
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return NULL;
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gbm->fd = -1;
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if (fd < 0) {
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gbm->fd = rendernode_open();
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if (gbm->fd < 0)
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goto out_error;
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gbm->device = gbm_create_device(gbm->fd);
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if (!gbm->device) {
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close(gbm->fd);
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goto out_error;
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}
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} else {
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gbm->device = gbm_create_device(fd);
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if (!gbm->device)
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goto out_error;
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}
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return gbm;
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out_error:
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free(gbm);
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return NULL;
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}
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void virgl_gbm_fini(struct virgl_gbm *gbm)
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{
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gbm_device_destroy(gbm->device);
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if (gbm->fd >= 0)
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close(gbm->fd);
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free(gbm);
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}
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int virgl_gbm_convert_format(uint32_t *virgl_format, uint32_t *gbm_format)
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{
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if (!virgl_format || !gbm_format)
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return -1;
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if (*virgl_format != 0 && *gbm_format != 0)
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return -1;
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for (uint32_t i = 0; i < ARRAY_SIZE(conversions); i++) {
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if (conversions[i].gbm_format == *gbm_format ||
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conversions[i].virgl_format == *virgl_format) {
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*gbm_format = conversions[i].gbm_format;
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*virgl_format = conversions[i].virgl_format;
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return 0;
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}
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}
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return -1;
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}
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#ifdef ENABLE_MINIGBM_ALLOCATION
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int virgl_gbm_transfer(struct gbm_bo *bo, uint32_t direction, const struct iovec *iovecs,
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uint32_t num_iovecs, const struct vrend_transfer_info *info)
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{
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void *map_data;
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uint32_t guest_plane_offset, guest_stride0, host_map_stride0;
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uint32_t width = gbm_bo_get_width(bo);
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uint32_t height = gbm_bo_get_height(bo);
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uint32_t format = gbm_bo_get_format(bo);
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int plane_count = gbm_bo_get_plane_count(bo);
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const struct planar_layout *layout = layout_from_format(format);
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if (!layout)
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return -1;
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host_map_stride0 = 0;
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uint32_t map_flags = (direction == VIRGL_TRANSFER_TO_HOST) ? GBM_BO_TRANSFER_WRITE :
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GBM_BO_TRANSFER_READ;
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/* XXX remove this and map just the region when single plane and GBM honors the region */
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if (direction == VIRGL_TRANSFER_TO_HOST &&
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!(info->box->x == 0 && info->box->y == 0 &&
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info->box->width == width && info->box->height == height))
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map_flags |= GBM_BO_TRANSFER_READ;
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void *addr = gbm_bo_map(bo, 0, 0, width, height, map_flags, &host_map_stride0, &map_data);
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if (!addr)
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return -1;
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guest_plane_offset = info->offset;
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guest_stride0 = 0;
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/*
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* Unfortunately, the kernel doesn't actually pass the guest layer_stride and
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* guest stride to the host (compare virtio_gpu.h and virtgpu_drm.h). We can use
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* the level (always zero for 2D images) to work around this.
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*/
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if (info->stride || info->level) {
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guest_stride0 = info->stride ? info->stride : info->level;
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if (guest_stride0 < (uint32_t)info->box->width * layout->bytes_per_pixel[0])
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return -1;
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} else {
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guest_stride0 = width * layout->bytes_per_pixel[0];
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}
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if (guest_stride0 > host_map_stride0)
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return -1;
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for (int plane = 0; plane < plane_count; plane++) {
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uint32_t host_plane_offset = gbm_bo_get_offset(bo, plane);
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uint32_t subsampled_x = info->box->x / layout->horizontal_subsampling[plane];
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uint32_t subsampled_y = info->box->y / layout->vertical_subsampling[plane];
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uint32_t subsampled_width = info->box->width / layout->horizontal_subsampling[plane];
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uint32_t subsampled_height = info->box->height / layout->vertical_subsampling[plane];
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uint32_t plane_height = height / layout->vertical_subsampling[plane];
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uint32_t plane_byte_ratio = layout->bytes_per_pixel[plane] / layout->bytes_per_pixel[0];
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uint32_t guest_plane_stride = (guest_stride0 * plane_byte_ratio)
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/ layout->horizontal_subsampling[plane];
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uint32_t host_plane_stride = plane == 0
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? host_map_stride0 : gbm_bo_get_stride_for_plane(bo, plane);
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uint32_t guest_resource_offset = guest_plane_offset;
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uint32_t host_resource_offset = host_plane_offset + (subsampled_y * host_plane_stride)
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+ subsampled_x * layout->bytes_per_pixel[plane];
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uint8_t *host_address = (uint8_t*)addr + host_resource_offset;
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/*
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* Here we apply another hack. info->offset does not account for
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* info->box for planar resources and we need to make adjustments.
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*/
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if (plane_count > 1) {
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guest_resource_offset += (subsampled_y * guest_plane_stride)
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+ subsampled_x * layout->bytes_per_pixel[plane];
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}
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virgl_gbm_transfer_internal(layout->bytes_per_pixel[plane], subsampled_width,
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subsampled_height, guest_plane_stride, guest_resource_offset,
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host_plane_stride, host_address, iovecs, num_iovecs, direction);
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if (info->layer_stride) {
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guest_plane_offset += (info->layer_stride * plane_byte_ratio)
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/ (layout->horizontal_subsampling[plane] * layout->vertical_subsampling[plane]);
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} else {
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guest_plane_offset += plane_height * guest_plane_stride;
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}
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}
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gbm_bo_unmap(bo, map_data);
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return 0;
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}
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uint32_t virgl_gbm_convert_flags(uint32_t virgl_bind_flags)
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{
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uint32_t flags = 0;
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if (virgl_bind_flags & VIRGL_BIND_SAMPLER_VIEW)
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flags |= GBM_BO_USE_TEXTURING;
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if (virgl_bind_flags & VIRGL_BIND_RENDER_TARGET)
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flags |= GBM_BO_USE_RENDERING;
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if (virgl_bind_flags & VIRGL_BIND_SCANOUT)
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flags |= GBM_BO_USE_SCANOUT;
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if (virgl_bind_flags & VIRGL_BIND_CURSOR)
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flags |= GBM_BO_USE_CURSOR;
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if (virgl_bind_flags & VIRGL_BIND_LINEAR)
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flags |= GBM_BO_USE_LINEAR;
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if (virgl_bind_flags & VIRGL_BIND_MINIGBM_CAMERA_WRITE)
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flags |= GBM_BO_USE_CAMERA_WRITE;
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if (virgl_bind_flags & VIRGL_BIND_MINIGBM_CAMERA_READ)
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flags |= GBM_BO_USE_CAMERA_READ;
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if (virgl_bind_flags & VIRGL_BIND_MINIGBM_HW_VIDEO_DECODER)
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flags |= GBM_BO_USE_HW_VIDEO_DECODER;
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if (virgl_bind_flags & VIRGL_BIND_MINIGBM_HW_VIDEO_ENCODER)
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flags |= GBM_BO_USE_HW_VIDEO_ENCODER;
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if ((virgl_bind_flags & VIRGL_BIND_MINIGBM_PROTECTED) == VIRGL_BIND_MINIGBM_PROTECTED) {
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flags |= GBM_BO_USE_PROTECTED;
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} else {
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if (virgl_bind_flags & VIRGL_BIND_MINIGBM_SW_READ_OFTEN)
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flags |= GBM_BO_USE_SW_READ_OFTEN;
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if (virgl_bind_flags & VIRGL_BIND_MINIGBM_SW_READ_RARELY)
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flags |= GBM_BO_USE_SW_READ_RARELY;
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if (virgl_bind_flags & VIRGL_BIND_MINIGBM_SW_WRITE_OFTEN)
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flags |= GBM_BO_USE_SW_WRITE_OFTEN;
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if (virgl_bind_flags & VIRGL_BIND_MINIGBM_SW_WRITE_RARELY)
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flags |= GBM_BO_USE_SW_WRITE_RARELY;
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}
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return flags;
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}
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int virgl_gbm_export_query(struct gbm_bo *bo, struct virgl_renderer_export_query *query)
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{
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int ret = -1;
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uint32_t handles[VIRGL_GBM_MAX_PLANES] = { 0 };
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struct gbm_device *gbm = gbm_bo_get_device(bo);
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int num_planes = gbm_bo_get_plane_count(bo);
|
|
if (num_planes < 0 || num_planes > VIRGL_GBM_MAX_PLANES)
|
|
return ret;
|
|
|
|
query->out_num_fds = 0;
|
|
query->out_fourcc = 0;
|
|
query->out_modifier = DRM_FORMAT_MOD_INVALID;
|
|
for (int plane = 0; plane < VIRGL_GBM_MAX_PLANES; plane++) {
|
|
query->out_fds[plane] = -1;
|
|
query->out_strides[plane] = 0;
|
|
query->out_offsets[plane] = 0;
|
|
}
|
|
|
|
for (int plane = 0; plane < num_planes; plane++) {
|
|
uint32_t i, handle;
|
|
query->out_strides[plane] = gbm_bo_get_stride_for_plane(bo, plane);
|
|
query->out_offsets[plane] = gbm_bo_get_offset(bo, plane);
|
|
handle = gbm_bo_get_handle_for_plane(bo, plane).u32;
|
|
|
|
for (i = 0; i < query->out_num_fds; i++) {
|
|
if (handles[i] == handle)
|
|
break;
|
|
}
|
|
|
|
if (i == query->out_num_fds) {
|
|
if (query->in_export_fds) {
|
|
ret = virgl_gbm_export_fd(gbm, handle, &query->out_fds[query->out_num_fds]);
|
|
if (ret)
|
|
goto err_close;
|
|
}
|
|
handles[query->out_num_fds] = handle;
|
|
query->out_num_fds++;
|
|
}
|
|
}
|
|
|
|
query->out_modifier = gbm_bo_get_modifier(bo);
|
|
query->out_fourcc = gbm_bo_get_format(bo);
|
|
return 0;
|
|
|
|
err_close:
|
|
for (int plane = 0; plane < VIRGL_GBM_MAX_PLANES; plane++) {
|
|
if (query->out_fds[plane] >= 0) {
|
|
close(query->out_fds[plane]);
|
|
query->out_fds[plane] = -1;
|
|
}
|
|
|
|
query->out_strides[plane] = 0;
|
|
query->out_offsets[plane] = 0;
|
|
}
|
|
|
|
query->out_num_fds = 0;
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
int virgl_gbm_export_fd(struct gbm_device *gbm, uint32_t handle, int32_t *out_fd)
|
|
{
|
|
int ret;
|
|
ret = drmPrimeHandleToFD(gbm_device_get_fd(gbm), handle, DRM_CLOEXEC | DRM_RDWR, out_fd);
|
|
// Kernels with older DRM core versions block DRM_RDWR but give a
|
|
// read/write mapping anyway.
|
|
if (ret)
|
|
ret = drmPrimeHandleToFD(gbm_device_get_fd(gbm), handle, DRM_CLOEXEC, out_fd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int virgl_gbm_get_plane_width(struct gbm_bo *bo, int plane) {
|
|
uint32_t format = gbm_bo_get_format(bo);
|
|
const struct planar_layout *layout = layout_from_format(format);
|
|
if (!layout)
|
|
return -1;
|
|
return gbm_bo_get_width(bo) / layout->horizontal_subsampling[plane];
|
|
}
|
|
|
|
int virgl_gbm_get_plane_height(struct gbm_bo *bo, int plane) {
|
|
uint32_t format = gbm_bo_get_format(bo);
|
|
const struct planar_layout *layout = layout_from_format(format);
|
|
if (!layout)
|
|
return -1;
|
|
return gbm_bo_get_height(bo) / layout->vertical_subsampling[plane];
|
|
}
|
|
|
|
int virgl_gbm_get_plane_bytes_per_pixel(struct gbm_bo *bo, int plane) {
|
|
uint32_t format = gbm_bo_get_format(bo);
|
|
const struct planar_layout *layout = layout_from_format(format);
|
|
if (!layout)
|
|
return -1;
|
|
return layout->bytes_per_pixel[plane];
|
|
}
|
|
|
|
bool virgl_gbm_external_allocation_preferred(uint32_t flags) {
|
|
return (flags & (VIRGL_RES_BIND_SCANOUT | VIRGL_RES_BIND_SHARED)) != 0;
|
|
}
|
|
|
|
bool virgl_gbm_gpu_import_required(uint32_t flags) {
|
|
return !virgl_gbm_external_allocation_preferred(flags) ||
|
|
(flags & (VIRGL_BIND_RENDER_TARGET | VIRGL_BIND_SAMPLER_VIEW)) != 0;
|
|
}
|