include/hw/virtio/virtio-gpu.h

   1 /*
   2  * Virtio GPU Device
   3  *
   4  * Copyright Red Hat, Inc. 2013-2014
   5  *
   6  * Authors:
   7  *     Dave Airlie <airlied@redhat.com>
   8  *     Gerd Hoffmann <kraxel@redhat.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #ifndef _QEMU_VIRTIO_VGA_H
  15 #define _QEMU_VIRTIO_VGA_H
  16
  17 #include "qemu/queue.h"
  18 #include "ui/qemu-pixman.h"
  19 #include "ui/console.h"
  20 #include "hw/virtio/virtio.h"
  21 #include "hw/pci/pci.h"
  22
  23 #include "standard-headers/linux/virtio_gpu.h"
  24 #define TYPE_VIRTIO_GPU "virtio-gpu-device"
  25 #define VIRTIO_GPU(obj)                                        \
  26         OBJECT_CHECK(VirtIOGPU, (obj), TYPE_VIRTIO_GPU)
  27
  28 #define VIRTIO_ID_GPU 16
  29
  30 #define VIRTIO_GPU_MAX_SCANOUT 4
  31
  32 struct virtio_gpu_simple_resource {
  33     uint32_t resource_id;
  34     uint32_t width;
  35     uint32_t height;
  36     uint32_t format;
  37     struct iovec *iov;
  38     unsigned int iov_cnt;
  39     uint32_t scanout_bitmask;
  40     pixman_image_t *image;
  41     QTAILQ_ENTRY(virtio_gpu_simple_resource) next;
  42 };
  43
  44 struct virtio_gpu_scanout {
  45     QemuConsole *con;
  46     DisplaySurface *ds;
  47     uint32_t width, height;
  48     int x, y;
  49     int invalidate;
  50     uint32_t resource_id;
  51     QEMUCursor *current_cursor;
  52 };
  53
  54 struct virtio_gpu_requested_state {
  55     uint32_t width, height;
  56     int x, y;
  57 };
  58
  59 enum virtio_gpu_conf_flags {
  60     VIRTIO_GPU_FLAG_VIRGL_ENABLED = 1,
  61     VIRTIO_GPU_FLAG_STATS_ENABLED,
  62 };
  63
  64 #define virtio_gpu_virgl_enabled(_cfg) \
  65     (_cfg.flags & (1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED))
  66 #define virtio_gpu_stats_enabled(_cfg) \
  67     (_cfg.flags & (1 << VIRTIO_GPU_FLAG_STATS_ENABLED))
  68
  69 struct virtio_gpu_conf {
  70     uint32_t max_outputs;
  71     uint32_t flags;
  72 };
  73
  74 struct virtio_gpu_ctrl_command {
  75     VirtQueueElement elem;
  76     VirtQueue *vq;
  77     struct virtio_gpu_ctrl_hdr cmd_hdr;
  78     uint32_t error;
  79     bool finished;
  80     QTAILQ_ENTRY(virtio_gpu_ctrl_command) next;
  81 };
  82
  83 typedef struct VirtIOGPU {
  84     VirtIODevice parent_obj;
  85
  86     QEMUBH *ctrl_bh;
  87     QEMUBH *cursor_bh;
  88     VirtQueue *ctrl_vq;
  89     VirtQueue *cursor_vq;
  90
  91     int enable;
  92
  93     int config_size;
  94     DeviceState *qdev;
  95
  96     QTAILQ_HEAD(, virtio_gpu_simple_resource) reslist;
  97     QTAILQ_HEAD(, virtio_gpu_ctrl_command) cmdq;
  98     QTAILQ_HEAD(, virtio_gpu_ctrl_command) fenceq;
  99
 100     struct virtio_gpu_scanout scanout[VIRTIO_GPU_MAX_SCANOUT];
 101     struct virtio_gpu_requested_state req_state[VIRTIO_GPU_MAX_SCANOUT];
 102
 103     struct virtio_gpu_conf conf;
 104     int enabled_output_bitmask;
 105     struct virtio_gpu_config virtio_config;
 106
 107     bool use_virgl_renderer;
 108     bool renderer_inited;
 109     QEMUTimer *fence_poll;
 110     QEMUTimer *print_stats;
 111
 112     uint32_t inflight;
 113     struct {
 114         uint32_t max_inflight;
 115         uint32_t requests;
 116         uint32_t req_3d;
 117         uint32_t bytes_3d;
 118     } stats;
 119 } VirtIOGPU;
 120
 121 extern const GraphicHwOps virtio_gpu_ops;
 122
 123 /* to share between PCI and VGA */
 124 #define DEFINE_VIRTIO_GPU_PCI_PROPERTIES(_state)               \
 125     DEFINE_PROP_BIT("ioeventfd", _state, flags,                \
 126                     VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), \
 127     DEFINE_PROP_UINT32("vectors", _state, nvectors, 3)
 128
 129 #define VIRTIO_GPU_FILL_CMD(out) do {                                   \
 130         size_t s;                                                       \
 131         s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0,          \
 132                        &out, sizeof(out));                              \
 133         if (s != sizeof(out)) {                                         \
 134             qemu_log_mask(LOG_GUEST_ERROR,                              \
 135                           "%s: command size incorrect %zu vs %zu\n",    \
 136                           __func__, s, sizeof(out));                    \
 137             return;                                                     \
 138         }                                                               \
 139     } while (0)
 140
 141 /* virtio-gpu.c */
 142 void virtio_gpu_ctrl_response(VirtIOGPU *g,
 143                               struct virtio_gpu_ctrl_command *cmd,
 144                               struct virtio_gpu_ctrl_hdr *resp,
 145                               size_t resp_len);
 146 void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g,
 147                                      struct virtio_gpu_ctrl_command *cmd,
 148                                      enum virtio_gpu_ctrl_type type);
 149 void virtio_gpu_get_display_info(VirtIOGPU *g,
 150                                  struct virtio_gpu_ctrl_command *cmd);
 151 int virtio_gpu_create_mapping_iov(struct virtio_gpu_resource_attach_backing *ab,
 152                                   struct virtio_gpu_ctrl_command *cmd,
 153                                   struct iovec **iov);
 154 void virtio_gpu_cleanup_mapping_iov(struct iovec *iov, uint32_t count);
 155
 156 /* virtio-gpu-3d.c */
 157 void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
 158                                   struct virtio_gpu_ctrl_command *cmd);
 159 void virtio_gpu_virgl_fence_poll(VirtIOGPU *g);
 160 void virtio_gpu_virgl_reset(VirtIOGPU *g);
 161 int virtio_gpu_virgl_init(VirtIOGPU *g);
 162
 163 #endif