Merge remote-tracking branch 'remotes/kraxel/tags/vga-20210510-pull-request' into staging

edid: display id support (for 5k+), bugfixes.
virtio-gpu: iommu fix, device split.

# gpg: Signature made Mon 10 May 2021 14:20:36 BST
# gpg:                using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/vga-20210510-pull-request: (25 commits)
  virtio-gpu: add virtio-vga-gl
  modules: add have_vga
  virtio-gpu: add virtio-gpu-gl-pci
  virtio-gpu: move fields to struct VirtIOGPUGL
  virtio-gpu: drop use_virgl_renderer
  virtio-gpu: move virtio-gpu-gl-device to separate module
  virtio-gpu: drop VIRGL() macro
  virtio-gpu: move update_cursor_data
  virtio-gpu: move virgl process_cmd
  virtio-gpu: move virgl gl_flushed
  virtio-gpu: move virgl handle_ctrl
  virtio-gpu: use class function for ctrl queue handlers
  virtio-gpu: move virgl reset
  virtio-gpu: move virgl realize + properties
  virtio-gpu: add virtio-gpu-gl-device
  virtio-gpu: rename virgl source file.
  virtio-gpu: handle partial maps properly
  edid: add support for DisplayID extension (5k resolution)
  edid: allow arbitrary-length checksums
  edid: move timing generation into a separate function
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 66 insertions, 152 deletions

diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index c9f5e36fd0..db56f0454a 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -39,26 +39,9 @@ virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id);
 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g,
                                        struct virtio_gpu_simple_resource *res);
 
-#ifdef CONFIG_VIRGL
-#include <virglrenderer.h>
-#define VIRGL(_g, _virgl, _simple, ...)                     \
-    do {                                                    \
-        if (_g->parent_obj.use_virgl_renderer) {            \
-            _virgl(__VA_ARGS__);                            \
-        } else {                                            \
-            _simple(__VA_ARGS__);                           \
-        }                                                   \
-    } while (0)
-#else
-#define VIRGL(_g, _virgl, _simple, ...)                 \
-    do {                                                \
-        _simple(__VA_ARGS__);                           \
-    } while (0)
-#endif
-
-static void update_cursor_data_simple(VirtIOGPU *g,
-                                      struct virtio_gpu_scanout *s,
-                                      uint32_t resource_id)
+void virtio_gpu_update_cursor_data(VirtIOGPU *g,
+                                   struct virtio_gpu_scanout *s,
+                                   uint32_t resource_id)
 {
     struct virtio_gpu_simple_resource *res;
     uint32_t pixels;
@@ -79,36 +62,10 @@ static void update_cursor_data_simple(VirtIOGPU *g,
            pixels * sizeof(uint32_t));
 }
 
-#ifdef CONFIG_VIRGL
-
-static void update_cursor_data_virgl(VirtIOGPU *g,
-                                     struct virtio_gpu_scanout *s,
-                                     uint32_t resource_id)
-{
-    uint32_t width, height;
-    uint32_t pixels, *data;
-
-    data = virgl_renderer_get_cursor_data(resource_id, &width, &height);
-    if (!data) {
-        return;
-    }
-
-    if (width != s->current_cursor->width ||
-        height != s->current_cursor->height) {
-        free(data);
-        return;
-    }
-
-    pixels = s->current_cursor->width * s->current_cursor->height;
-    memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t));
-    free(data);
-}
-
-#endif
-
 static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor)
 {
     struct virtio_gpu_scanout *s;
+    VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g);
     bool move = cursor->hdr.type == VIRTIO_GPU_CMD_MOVE_CURSOR;
 
     if (cursor->pos.scanout_id >= g->parent_obj.conf.max_outputs) {
@@ -131,8 +88,7 @@ static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor)
         s->current_cursor->hot_y = cursor->hot_y;
 
         if (cursor->resource_id > 0) {
-            VIRGL(g, update_cursor_data_virgl, update_cursor_data_simple,
-                  g, s, cursor->resource_id);
+            vgc->update_cursor_data(g, s, cursor->resource_id);
         }
         dpy_cursor_define(s->con, s->current_cursor);
 
@@ -608,11 +564,12 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g,
 int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
                                   struct virtio_gpu_resource_attach_backing *ab,
                                   struct virtio_gpu_ctrl_command *cmd,
-                                  uint64_t **addr, struct iovec **iov)
+                                  uint64_t **addr, struct iovec **iov,
+                                  uint32_t *niov)
 {
     struct virtio_gpu_mem_entry *ents;
     size_t esize, s;
-    int i;
+    int e, v;
 
     if (ab->nr_entries > 16384) {
         qemu_log_mask(LOG_GUEST_ERROR,
@@ -633,37 +590,53 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
         return -1;
     }
 
-    *iov = g_malloc0(sizeof(struct iovec) * ab->nr_entries);
+    *iov = NULL;
     if (addr) {
-        *addr = g_malloc0(sizeof(uint64_t) * ab->nr_entries);
+        *addr = NULL;
     }
-    for (i = 0; i < ab->nr_entries; i++) {
-        uint64_t a = le64_to_cpu(ents[i].addr);
-        uint32_t l = le32_to_cpu(ents[i].length);
-        hwaddr len = l;
-        (*iov)[i].iov_base = dma_memory_map(VIRTIO_DEVICE(g)->dma_as,
-                                            a, &len, DMA_DIRECTION_TO_DEVICE);
-        (*iov)[i].iov_len = len;
-        if (addr) {
-            (*addr)[i] = a;
-        }
-        if (!(*iov)[i].iov_base || len != l) {
-            qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
-                          " resource %d element %d\n",
-                          __func__, ab->resource_id, i);
-            if ((*iov)[i].iov_base) {
-                i++; /* cleanup the 'i'th map */
+    for (e = 0, v = 0; e < ab->nr_entries; e++) {
+        uint64_t a = le64_to_cpu(ents[e].addr);
+        uint32_t l = le32_to_cpu(ents[e].length);
+        hwaddr len;
+        void *map;
+
+        do {
+            len = l;
+            map = dma_memory_map(VIRTIO_DEVICE(g)->dma_as,
+                                 a, &len, DMA_DIRECTION_TO_DEVICE);
+            if (!map) {
+                qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
+                              " resource %d element %d\n",
+                              __func__, ab->resource_id, e);
+                virtio_gpu_cleanup_mapping_iov(g, *iov, v);
+                g_free(ents);
+                *iov = NULL;
+                if (addr) {
+                    g_free(*addr);
+                    *addr = NULL;
+                }
+                return -1;
             }
-            virtio_gpu_cleanup_mapping_iov(g, *iov, i);
-            g_free(ents);
-            *iov = NULL;
+
+            if (!(v % 16)) {
+                *iov = g_realloc(*iov, sizeof(struct iovec) * (v + 16));
+                if (addr) {
+                    *addr = g_realloc(*addr, sizeof(uint64_t) * (v + 16));
+                }
+            }
+            (*iov)[v].iov_base = map;
+            (*iov)[v].iov_len = len;
             if (addr) {
-                g_free(*addr);
-                *addr = NULL;
+                (*addr)[v] = a;
             }
-            return -1;
-        }
+
+            a += len;
+            l -= len;
+            v += 1;
+        } while (l > 0);
     }
+    *niov = v;
+
     g_free(ents);
     return 0;
 }
@@ -717,13 +690,12 @@ virtio_gpu_resource_attach_backing(VirtIOGPU *g,
         return;
     }
 
-    ret = virtio_gpu_create_mapping_iov(g, &ab, cmd, &res->addrs, &res->iov);
+    ret = virtio_gpu_create_mapping_iov(g, &ab, cmd, &res->addrs,
+                                        &res->iov, &res->iov_cnt);
     if (ret != 0) {
         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
         return;
     }
-
-    res->iov_cnt = ab.nr_entries;
 }
 
 static void
@@ -747,8 +719,8 @@ virtio_gpu_resource_detach_backing(VirtIOGPU *g,
     virtio_gpu_cleanup_mapping(g, res);
 }
 
-static void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
-                                          struct virtio_gpu_ctrl_command *cmd)
+void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
+                                   struct virtio_gpu_ctrl_command *cmd)
 {
     VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
     virtio_gpu_ctrl_hdr_bswap(&cmd->cmd_hdr);
@@ -806,6 +778,7 @@ static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq)
 void virtio_gpu_process_cmdq(VirtIOGPU *g)
 {
     struct virtio_gpu_ctrl_command *cmd;
+    VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g);
 
     if (g->processing_cmdq) {
         return;
@@ -819,8 +792,7 @@ void virtio_gpu_process_cmdq(VirtIOGPU *g)
         }
 
         /* process command */
-        VIRGL(g, virtio_gpu_virgl_process_cmd, virtio_gpu_simple_process_cmd,
-              g, cmd);
+        vgc->process_cmd(g, cmd);
 
         QTAILQ_REMOVE(&g->cmdq, cmd, next);
         if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
@@ -843,19 +815,6 @@ void virtio_gpu_process_cmdq(VirtIOGPU *g)
     g->processing_cmdq = false;
 }
 
-static void virtio_gpu_gl_flushed(VirtIOGPUBase *b)
-{
-    VirtIOGPU *g = VIRTIO_GPU(b);
-
-#ifdef CONFIG_VIRGL
-    if (g->renderer_reset) {
-        g->renderer_reset = false;
-        virtio_gpu_virgl_reset(g);
-    }
-#endif
-    virtio_gpu_process_cmdq(g);
-}
-
 static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
 {
     VirtIOGPU *g = VIRTIO_GPU(vdev);
@@ -865,13 +824,6 @@ static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
         return;
     }
 
-#ifdef CONFIG_VIRGL
-    if (!g->renderer_inited && g->parent_obj.use_virgl_renderer) {
-        virtio_gpu_virgl_init(g);
-        g->renderer_inited = true;
-    }
-#endif
-
     cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
     while (cmd) {
         cmd->vq = vq;
@@ -882,18 +834,14 @@ static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
     }
 
     virtio_gpu_process_cmdq(g);
-
-#ifdef CONFIG_VIRGL
-    if (g->parent_obj.use_virgl_renderer) {
-        virtio_gpu_virgl_fence_poll(g);
-    }
-#endif
 }
 
 static void virtio_gpu_ctrl_bh(void *opaque)
 {
     VirtIOGPU *g = opaque;
-    virtio_gpu_handle_ctrl(&g->parent_obj.parent_obj, g->ctrl_vq);
+    VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g);
+
+    vgc->handle_ctrl(&g->parent_obj.parent_obj, g->ctrl_vq);
 }
 
 static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq)
@@ -1105,25 +1053,10 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size,
     return 0;
 }
 
-static void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
+void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
 {
     VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
     VirtIOGPU *g = VIRTIO_GPU(qdev);
-    bool have_virgl;
-
-#if !defined(CONFIG_VIRGL) || defined(HOST_WORDS_BIGENDIAN)
-    have_virgl = false;
-#else
-    have_virgl = display_opengl;
-#endif
-    if (!have_virgl) {
-        g->parent_obj.conf.flags &= ~(1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED);
-    } else {
-#if defined(CONFIG_VIRGL)
-        VIRTIO_GPU_BASE(g)->virtio_config.num_capsets =
-            virtio_gpu_virgl_get_num_capsets(g);
-#endif
-    }
 
     if (!virtio_gpu_base_device_realize(qdev,
                                         virtio_gpu_handle_ctrl_cb,
@@ -1141,18 +1074,12 @@ static void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
     QTAILQ_INIT(&g->fenceq);
 }
 
-static void virtio_gpu_reset(VirtIODevice *vdev)
+void virtio_gpu_reset(VirtIODevice *vdev)
 {
     VirtIOGPU *g = VIRTIO_GPU(vdev);
     struct virtio_gpu_simple_resource *res, *tmp;
     struct virtio_gpu_ctrl_command *cmd;
 
-#ifdef CONFIG_VIRGL
-    if (g->parent_obj.use_virgl_renderer) {
-        virtio_gpu_virgl_reset(g);
-    }
-#endif
-
     QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) {
         virtio_gpu_resource_destroy(g, res);
     }
@@ -1170,17 +1097,6 @@ static void virtio_gpu_reset(VirtIODevice *vdev)
         g_free(cmd);
     }
 
-#ifdef CONFIG_VIRGL
-    if (g->parent_obj.use_virgl_renderer) {
-        if (g->parent_obj.renderer_blocked) {
-            g->renderer_reset = true;
-        } else {
-            virtio_gpu_virgl_reset(g);
-        }
-        g->parent_obj.use_virgl_renderer = false;
-    }
-#endif
-
     virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev));
 }
 
@@ -1235,12 +1151,6 @@ static Property virtio_gpu_properties[] = {
     VIRTIO_GPU_BASE_PROPERTIES(VirtIOGPU, parent_obj.conf),
     DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf_max_hostmem,
                      256 * MiB),
-#ifdef CONFIG_VIRGL
-    DEFINE_PROP_BIT("virgl", VirtIOGPU, parent_obj.conf.flags,
-                    VIRTIO_GPU_FLAG_VIRGL_ENABLED, true),
-    DEFINE_PROP_BIT("stats", VirtIOGPU, parent_obj.conf.flags,
-                    VIRTIO_GPU_FLAG_STATS_ENABLED, false),
-#endif
     DEFINE_PROP_END_OF_LIST(),
 };
 
@@ -1248,9 +1158,12 @@ static void virtio_gpu_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
-    VirtIOGPUBaseClass *vgc = VIRTIO_GPU_BASE_CLASS(klass);
+    VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass);
+
+    vgc->handle_ctrl = virtio_gpu_handle_ctrl;
+    vgc->process_cmd = virtio_gpu_simple_process_cmd;
+    vgc->update_cursor_data = virtio_gpu_update_cursor_data;
 
-    vgc->gl_flushed = virtio_gpu_gl_flushed;
     vdc->realize = virtio_gpu_device_realize;
     vdc->reset = virtio_gpu_reset;
     vdc->get_config = virtio_gpu_get_config;
@@ -1264,6 +1177,7 @@ static const TypeInfo virtio_gpu_info = {
     .name = TYPE_VIRTIO_GPU,
     .parent = TYPE_VIRTIO_GPU_BASE,
     .instance_size = sizeof(VirtIOGPU),
+    .class_size = sizeof(VirtIOGPUClass),
     .class_init = virtio_gpu_class_init,
 };