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 HW_VIRTIO_GPU_H
  15 #define HW_VIRTIO_GPU_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 #include "qemu/log.h"
  23
  24 #include "standard-headers/linux/virtio_gpu.h"
  25 #define TYPE_VIRTIO_GPU "virtio-gpu-device"
  26 #define VIRTIO_GPU(obj)                                        \
  27         OBJECT_CHECK(VirtIOGPU, (obj), TYPE_VIRTIO_GPU)
  28
  29 #define VIRTIO_ID_GPU 16
  30
  31 struct virtio_gpu_simple_resource {
  32     uint32_t resource_id;
  33     uint32_t width;
  34     uint32_t height;
  35     uint32_t format;
  36     uint64_t *addrs;
  37     struct iovec *iov;
  38     unsigned int iov_cnt;
  39     uint32_t scanout_bitmask;
  40     pixman_image_t *image;
  41     uint64_t hostmem;
  42     QTAILQ_ENTRY(virtio_gpu_simple_resource) next;
  43 };
  44
  45 struct virtio_gpu_scanout {
  46     QemuConsole *con;
  47     DisplaySurface *ds;
  48     uint32_t width, height;
  49     int x, y;
  50     int invalidate;
  51     uint32_t resource_id;
  52     struct virtio_gpu_update_cursor cursor;
  53     QEMUCursor *current_cursor;
  54 };
  55
  56 struct virtio_gpu_requested_state {
  57     uint32_t width, height;
  58     int x, y;
  59 };
  60
  61 enum virtio_gpu_conf_flags {
  62     VIRTIO_GPU_FLAG_VIRGL_ENABLED = 1,
  63     VIRTIO_GPU_FLAG_STATS_ENABLED,
  64 };
  65
  66 #define virtio_gpu_virgl_enabled(_cfg) \
  67     (_cfg.flags & (1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED))
  68 #define virtio_gpu_stats_enabled(_cfg) \
  69     (_cfg.flags & (1 << VIRTIO_GPU_FLAG_STATS_ENABLED))
  70
  71 struct virtio_gpu_conf {
  72     uint64_t max_hostmem;
  73     uint32_t max_outputs;
  74     uint32_t flags;
  75 };
  76
  77 struct virtio_gpu_ctrl_command {
  78     VirtQueueElement elem;
  79     VirtQueue *vq;
  80     struct virtio_gpu_ctrl_hdr cmd_hdr;
  81     uint32_t error;
  82     bool waiting;
  83     bool finished;
  84     QTAILQ_ENTRY(virtio_gpu_ctrl_command) next;
  85 };
  86
  87 typedef struct VirtIOGPU {
  88     VirtIODevice parent_obj;
  89
  90     QEMUBH *ctrl_bh;
  91     QEMUBH *cursor_bh;
  92     VirtQueue *ctrl_vq;
  93     VirtQueue *cursor_vq;
  94
  95     int enable;
  96
  97     int config_size;
  98     DeviceState *qdev;
  99
 100     QTAILQ_HEAD(, virtio_gpu_simple_resource) reslist;
 101     QTAILQ_HEAD(, virtio_gpu_ctrl_command) cmdq;
 102     QTAILQ_HEAD(, virtio_gpu_ctrl_command) fenceq;
 103
 104     struct virtio_gpu_scanout scanout[VIRTIO_GPU_MAX_SCANOUTS];
 105     struct virtio_gpu_requested_state req_state[VIRTIO_GPU_MAX_SCANOUTS];
 106
 107     struct virtio_gpu_conf conf;
 108     uint64_t hostmem;
 109     int enabled_output_bitmask;
 110     struct virtio_gpu_config virtio_config;
 111
 112     bool use_virgl_renderer;
 113     bool renderer_inited;
 114     int renderer_blocked;
 115     QEMUTimer *fence_poll;
 116     QEMUTimer *print_stats;
 117
 118     uint32_t inflight;
 119     struct {
 120         uint32_t max_inflight;
 121         uint32_t requests;
 122         uint32_t req_3d;
 123         uint32_t bytes_3d;
 124     } stats;
 125
 126     Error *migration_blocker;
 127 } VirtIOGPU;
 128
 129 extern const GraphicHwOps virtio_gpu_ops;
 130
 131 /* to share between PCI and VGA */
 132 #define DEFINE_VIRTIO_GPU_PCI_PROPERTIES(_state)               \
 133     DEFINE_PROP_BIT("ioeventfd", _state, flags,                \
 134                     VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), \
 135     DEFINE_PROP_UINT32("vectors", _state, nvectors, 3)
 136
 137 #define VIRTIO_GPU_FILL_CMD(out) do {                                   \
 138         size_t s;                                                       \
 139         s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0,          \
 140                        &out, sizeof(out));                              \
 141         if (s != sizeof(out)) {                                         \
 142             qemu_log_mask(LOG_GUEST_ERROR,                              \
 143                           "%s: command size incorrect %zu vs %zu\n",    \
 144                           __func__, s, sizeof(out));                    \
 145             return;                                                     \
 146         }                                                               \
 147     } while (0)
 148
 149 /* virtio-gpu.c */
 150 void virtio_gpu_ctrl_response(VirtIOGPU *g,
 151                               struct virtio_gpu_ctrl_command *cmd,
 152                               struct virtio_gpu_ctrl_hdr *resp,
 153                               size_t resp_len);
 154 void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g,
 155                                      struct virtio_gpu_ctrl_command *cmd,
 156                                      enum virtio_gpu_ctrl_type type);
 157 void virtio_gpu_get_display_info(VirtIOGPU *g,
 158                                  struct virtio_gpu_ctrl_command *cmd);
 159 int virtio_gpu_create_mapping_iov(struct virtio_gpu_resource_attach_backing *ab,
 160                                   struct virtio_gpu_ctrl_command *cmd,
 161                                   uint64_t **addr, struct iovec **iov);
 162 void virtio_gpu_cleanup_mapping_iov(struct iovec *iov, uint32_t count);
 163 void virtio_gpu_process_cmdq(VirtIOGPU *g);
 164
 165 /* virtio-gpu-3d.c */
 166 void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
 167                                   struct virtio_gpu_ctrl_command *cmd);
 168 void virtio_gpu_virgl_fence_poll(VirtIOGPU *g);
 169 void virtio_gpu_virgl_reset(VirtIOGPU *g);
 170 int virtio_gpu_virgl_init(VirtIOGPU *g);
 171
 172 #endif