virtio-gpu/2d: add virtio gpu core code

This patch adds the core code for virtio gpu emulation,
covering 2d support.

Written by Dave Airlie and Gerd Hoffmann.
Signed-off-by: NDave Airlie <airlied@redhat.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/display/Makefile.objs

@@ -34,3 +34,5 @@ obj-$(CONFIG_CG3) += cg3.o
 obj-$(CONFIG_VGA) += vga.o
 
 common-obj-$(CONFIG_QXL) += qxl.o qxl-logger.o qxl-render.o
+
+obj-$(CONFIG_VIRTIO) += virtio-gpu.o

include/hw/virtio/virtio-gpu.h

+/*
+ * Virtio GPU Device
+ *
+ * Copyright Red Hat, Inc. 2013-2014
+ *
+ * Authors:
+ *     Dave Airlie <airlied@redhat.com>
+ *     Gerd Hoffmann <kraxel@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef _QEMU_VIRTIO_VGA_H
+#define _QEMU_VIRTIO_VGA_H
+
+#include "qemu/queue.h"
+#include "ui/qemu-pixman.h"
+#include "ui/console.h"
+#include "hw/virtio/virtio.h"
+#include "hw/pci/pci.h"
+
+#include "standard-headers/linux/virtio_gpu.h"
+#define TYPE_VIRTIO_GPU "virtio-gpu-device"
+#define VIRTIO_GPU(obj)                                        \
+        OBJECT_CHECK(VirtIOGPU, (obj), TYPE_VIRTIO_GPU)
+
+#define VIRTIO_ID_GPU 16
+
+#define VIRTIO_GPU_MAX_SCANOUT 4
+
+struct virtio_gpu_simple_resource {
+    uint32_t resource_id;
+    uint32_t width;
+    uint32_t height;
+    uint32_t format;
+    struct iovec *iov;
+    unsigned int iov_cnt;
+    uint32_t scanout_bitmask;
+    pixman_image_t *image;
+    QTAILQ_ENTRY(virtio_gpu_simple_resource) next;
+};
+
+struct virtio_gpu_scanout {
+    QemuConsole *con;
+    DisplaySurface *ds;
+    uint32_t width, height;
+    int x, y;
+    int invalidate;
+    uint32_t resource_id;
+    QEMUCursor *current_cursor;
+};
+
+struct virtio_gpu_requested_state {
+    uint32_t width, height;
+    int x, y;
+};
+
+struct virtio_gpu_conf {
+    uint32_t max_outputs;
+};
+
+struct virtio_gpu_ctrl_command {
+    VirtQueueElement elem;
+    VirtQueue *vq;
+    struct virtio_gpu_ctrl_hdr cmd_hdr;
+    uint32_t error;
+    bool finished;
+    QTAILQ_ENTRY(virtio_gpu_ctrl_command) next;
+};
+
+typedef struct VirtIOGPU {
+    VirtIODevice parent_obj;
+
+    QEMUBH *ctrl_bh;
+    QEMUBH *cursor_bh;
+    VirtQueue *ctrl_vq;
+    VirtQueue *cursor_vq;
+
+    int enable;
+
+    int config_size;
+    DeviceState *qdev;
+
+    QTAILQ_HEAD(, virtio_gpu_simple_resource) reslist;
+    QTAILQ_HEAD(, virtio_gpu_ctrl_command) fenceq;
+
+    struct virtio_gpu_scanout scanout[VIRTIO_GPU_MAX_SCANOUT];
+    struct virtio_gpu_requested_state req_state[VIRTIO_GPU_MAX_SCANOUT];
+
+    struct virtio_gpu_conf conf;
+    int enabled_output_bitmask;
+    struct virtio_gpu_config virtio_config;
+
+    QEMUTimer *fence_poll;
+    QEMUTimer *print_stats;
+
+    struct {
+        uint32_t inflight;
+        uint32_t max_inflight;
+        uint32_t requests;
+        uint32_t req_3d;
+        uint32_t bytes_3d;
+    } stats;
+} VirtIOGPU;
+
+extern const GraphicHwOps virtio_gpu_ops;
+
+/* to share between PCI and VGA */
+#define DEFINE_VIRTIO_GPU_PCI_PROPERTIES(_state)               \
+    DEFINE_PROP_BIT("ioeventfd", _state, flags,                \
+                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), \
+    DEFINE_PROP_UINT32("vectors", _state, nvectors, 3)
+
+#define DEFINE_VIRTIO_GPU_PROPERTIES(_state, _conf_field)               \
+    DEFINE_PROP_UINT32("max_outputs", _state, _conf_field.max_outputs, 1)
+
+#define VIRTIO_GPU_FILL_CMD(out) do {                                   \
+        size_t s;                                                       \
+        s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0,          \
+                       &out, sizeof(out));                              \
+        if (s != sizeof(out)) {                                         \
+            qemu_log_mask(LOG_GUEST_ERROR,                              \
+                          "%s: command size incorrect %zu vs %zu\n",    \
+                          __func__, s, sizeof(out));                    \
+            return;                                                     \
+        }                                                               \
+    } while (0)
+
+/* virtio-gpu.c */
+void virtio_gpu_ctrl_response(VirtIOGPU *g,
+                              struct virtio_gpu_ctrl_command *cmd,
+                              struct virtio_gpu_ctrl_hdr *resp,
+                              size_t resp_len);
+void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g,
+                                     struct virtio_gpu_ctrl_command *cmd,
+                                     enum virtio_gpu_ctrl_type type);
+void virtio_gpu_get_display_info(VirtIOGPU *g,
+                                 struct virtio_gpu_ctrl_command *cmd);
+int virtio_gpu_create_mapping_iov(struct virtio_gpu_resource_attach_backing *ab,
+                                  struct virtio_gpu_ctrl_command *cmd,
+                                  struct iovec **iov);
+void virtio_gpu_cleanup_mapping_iov(struct iovec *iov, uint32_t count);
+
+#endif

trace-events

@@ -1167,6 +1167,20 @@ vmware_scratch_read(uint32_t index, uint32_t value) "index %d, value 0x%x"
 vmware_scratch_write(uint32_t index, uint32_t value) "index %d, value 0x%x"
 vmware_setmode(uint32_t w, uint32_t h, uint32_t bpp) "%dx%d @ %d bpp"
 
+# hw/display/virtio-gpu.c
+virtio_gpu_cmd_get_display_info(void) ""
+virtio_gpu_cmd_get_caps(void) ""
+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"
+virtio_gpu_cmd_res_unref(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_back_attach(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_back_detach(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_xfer_toh_2d(uint32_t res) "res 0x%x"
+virtio_gpu_cmd_res_flush(uint32_t res, uint32_t w, uint32_t h, uint32_t x, uint32_t y) "res 0x%x, w %d, h %d, x %d, y %d"
+virtio_gpu_fence_ctrl(uint64_t fence, uint32_t type) "fence 0x%" PRIx64 ", type 0x%x"
+virtio_gpu_fence_resp(uint64_t fence) "fence 0x%" PRIx64
+
 # savevm.c
 qemu_loadvm_state_section(unsigned int section_type) "%d"
 qemu_loadvm_state_section_partend(uint32_t section_id) "%u"