From 1ed2cb32dc9e8f74c82bdc567edad717b0f34fa5 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Thu, 21 Feb 2019 09:10:54 +0100 Subject: [PATCH] display/virtio: add edid support. This patch adds EDID support to the family of virtio-gpu devices. It is turned off by default, use the new edid property to enable it. Signed-off-by: Gerd Hoffmann Message-id: 20190221081054.13853-1-kraxel@redhat.com --- hw/display/trace-events | 1 + hw/display/virtio-gpu-3d.c | 3 +++ hw/display/virtio-gpu.c | 43 ++++++++++++++++++++++++++++++++++ include/hw/virtio/virtio-gpu.h | 5 ++++ 4 files changed, 52 insertions(+) diff --git a/hw/display/trace-events b/hw/display/trace-events index 387c6b8931..37d3264bb2 100644 --- a/hw/display/trace-events +++ b/hw/display/trace-events @@ -35,6 +35,7 @@ vmware_setmode(uint32_t w, uint32_t h, uint32_t bpp) "%dx%d @ %d bpp" # hw/display/virtio-gpu.c virtio_gpu_features(bool virgl) "virgl %d" virtio_gpu_cmd_get_display_info(void) "" +virtio_gpu_cmd_get_edid(uint32_t scanout) "scanout %d" virtio_gpu_cmd_set_scanout(uint32_t id, uint32_t res, uint32_t w, uint32_t h, uint32_t x, uint32_t y) "id %d, res 0x%x, w %d, h %d, x %d, y %d" virtio_gpu_cmd_res_create_2d(uint32_t res, uint32_t fmt, uint32_t w, uint32_t h) "res 0x%x, fmt 0x%x, w %d, h %d" virtio_gpu_cmd_res_create_3d(uint32_t res, uint32_t fmt, uint32_t w, uint32_t h, uint32_t d) "res 0x%x, fmt 0x%x, w %d, h %d, d %d" diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c index cb83479ed2..2d302526ab 100644 --- a/hw/display/virtio-gpu-3d.c +++ b/hw/display/virtio-gpu-3d.c @@ -463,6 +463,9 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g, case VIRTIO_GPU_CMD_GET_DISPLAY_INFO: virtio_gpu_get_display_info(g, cmd); break; + case VIRTIO_GPU_CMD_GET_EDID: + virtio_gpu_get_edid(g, cmd); + break; default: cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; break; diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 0baa9ac0ad..a3627f58a9 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -21,6 +21,7 @@ #include "hw/virtio/virtio.h" #include "hw/virtio/virtio-gpu.h" #include "hw/virtio/virtio-bus.h" +#include "hw/display/edid.h" #include "migration/blocker.h" #include "qemu/log.h" #include "qapi/error.h" @@ -207,6 +208,9 @@ static uint64_t virtio_gpu_get_features(VirtIODevice *vdev, uint64_t features, if (virtio_gpu_virgl_enabled(g->conf)) { features |= (1 << VIRTIO_GPU_F_VIRGL); } + if (virtio_gpu_edid_enabled(g->conf)) { + features |= (1 << VIRTIO_GPU_F_EDID); + } return features; } @@ -301,6 +305,40 @@ void virtio_gpu_get_display_info(VirtIOGPU *g, sizeof(display_info)); } +static void +virtio_gpu_generate_edid(VirtIOGPU *g, int scanout, + struct virtio_gpu_resp_edid *edid) +{ + qemu_edid_info info = { + .prefx = g->req_state[scanout].width, + .prefy = g->req_state[scanout].height, + }; + + edid->size = cpu_to_le32(sizeof(edid->edid)); + qemu_edid_generate(edid->edid, sizeof(edid->edid), &info); +} + +void virtio_gpu_get_edid(VirtIOGPU *g, + struct virtio_gpu_ctrl_command *cmd) +{ + struct virtio_gpu_resp_edid edid; + struct virtio_gpu_cmd_get_edid get_edid; + + VIRTIO_GPU_FILL_CMD(get_edid); + virtio_gpu_bswap_32(&get_edid, sizeof(get_edid)); + + if (get_edid.scanout >= g->conf.max_outputs) { + cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; + return; + } + + trace_virtio_gpu_cmd_get_edid(get_edid.scanout); + memset(&edid, 0, sizeof(edid)); + edid.hdr.type = VIRTIO_GPU_RESP_OK_EDID; + virtio_gpu_generate_edid(g, get_edid.scanout, &edid); + virtio_gpu_ctrl_response(g, cmd, &edid.hdr, sizeof(edid)); +} + static pixman_format_code_t get_pixman_format(uint32_t virtio_gpu_format) { switch (virtio_gpu_format) { @@ -839,6 +877,9 @@ static void virtio_gpu_simple_process_cmd(VirtIOGPU *g, case VIRTIO_GPU_CMD_GET_DISPLAY_INFO: virtio_gpu_get_display_info(g, cmd); break; + case VIRTIO_GPU_CMD_GET_EDID: + virtio_gpu_get_edid(g, cmd); + break; case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D: virtio_gpu_resource_create_2d(g, cmd); break; @@ -1369,6 +1410,8 @@ static Property virtio_gpu_properties[] = { DEFINE_PROP_BIT("stats", VirtIOGPU, conf.flags, VIRTIO_GPU_FLAG_STATS_ENABLED, false), #endif + DEFINE_PROP_BIT("edid", VirtIOGPU, conf.flags, + VIRTIO_GPU_FLAG_EDID_ENABLED, false), DEFINE_PROP_UINT32("xres", VirtIOGPU, conf.xres, 1024), DEFINE_PROP_UINT32("yres", VirtIOGPU, conf.yres, 768), DEFINE_PROP_END_OF_LIST(), diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 26a6698266..98504f9075 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -61,12 +61,15 @@ struct virtio_gpu_requested_state { enum virtio_gpu_conf_flags { VIRTIO_GPU_FLAG_VIRGL_ENABLED = 1, VIRTIO_GPU_FLAG_STATS_ENABLED, + VIRTIO_GPU_FLAG_EDID_ENABLED, }; #define virtio_gpu_virgl_enabled(_cfg) \ (_cfg.flags & (1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED)) #define virtio_gpu_stats_enabled(_cfg) \ (_cfg.flags & (1 << VIRTIO_GPU_FLAG_STATS_ENABLED)) +#define virtio_gpu_edid_enabled(_cfg) \ + (_cfg.flags & (1 << VIRTIO_GPU_FLAG_EDID_ENABLED)) struct virtio_gpu_conf { uint64_t max_hostmem; @@ -155,6 +158,8 @@ void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g, enum virtio_gpu_ctrl_type type); void virtio_gpu_get_display_info(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd); +void virtio_gpu_get_edid(VirtIOGPU *g, + struct virtio_gpu_ctrl_command *cmd); int virtio_gpu_create_mapping_iov(VirtIOGPU *g, struct virtio_gpu_resource_attach_backing *ab, struct virtio_gpu_ctrl_command *cmd,