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minigbm: virtio_gpu: set vma->length when mmap.
[android-x86/external-minigbm.git] / drv.c
diff --git a/drv.c b/drv.c
index cb54a93..d548448 100644 (file)
--- a/drv.c
+++ b/drv.c
@@ -27,7 +27,6 @@ extern const struct backend backend_evdi;
 #ifdef DRV_EXYNOS
 extern const struct backend backend_exynos;
 #endif
-extern const struct backend backend_gma500;
 #ifdef DRV_I915
 extern const struct backend backend_i915;
 #endif
@@ -37,6 +36,12 @@ extern const struct backend backend_marvell;
 #ifdef DRV_MEDIATEK
 extern const struct backend backend_mediatek;
 #endif
+#ifdef DRV_MESON
+extern const struct backend backend_meson;
+#endif
+#ifdef DRV_MSM
+extern const struct backend backend_msm;
+#endif
 extern const struct backend backend_nouveau;
 #ifdef DRV_RADEON
 extern const struct backend backend_radeon;
@@ -72,7 +77,6 @@ static const struct backend *drv_get_backend(int fd)
 #ifdef DRV_EXYNOS
                &backend_exynos,
 #endif
-               &backend_gma500,
 #ifdef DRV_I915
                &backend_i915,
 #endif
@@ -82,6 +86,12 @@ static const struct backend *drv_get_backend(int fd)
 #ifdef DRV_MEDIATEK
                &backend_mediatek,
 #endif
+#ifdef DRV_MESON
+               &backend_meson,
+#endif
+#ifdef DRV_MSM
+               &backend_msm,
+#endif
                &backend_nouveau,
 #ifdef DRV_RADEON
                &backend_radeon,
@@ -132,30 +142,26 @@ struct driver *drv_create(int fd)
        if (!drv->buffer_table)
                goto free_lock;
 
-       drv->map_table = drmHashCreate();
-       if (!drv->map_table)
+       drv->mappings = drv_array_init(sizeof(struct mapping));
+       if (!drv->mappings)
                goto free_buffer_table;
 
-       /* Start with a power of 2 number of allocations. */
-       drv->combos.allocations = 2;
-       drv->combos.size = 0;
-
-       drv->combos.data = calloc(drv->combos.allocations, sizeof(struct combination));
-       if (!drv->combos.data)
-               goto free_map_table;
+       drv->combos = drv_array_init(sizeof(struct combination));
+       if (!drv->combos)
+               goto free_mappings;
 
        if (drv->backend->init) {
                ret = drv->backend->init(drv);
                if (ret) {
-                       free(drv->combos.data);
-                       goto free_map_table;
+                       drv_array_destroy(drv->combos);
+                       goto free_mappings;
                }
        }
 
        return drv;
 
-free_map_table:
-       drmHashDestroy(drv->map_table);
+free_mappings:
+       drv_array_destroy(drv->mappings);
 free_buffer_table:
        drmHashDestroy(drv->buffer_table);
 free_lock:
@@ -173,9 +179,8 @@ void drv_destroy(struct driver *drv)
                drv->backend->close(drv);
 
        drmHashDestroy(drv->buffer_table);
-       drmHashDestroy(drv->map_table);
-
-       free(drv->combos.data);
+       drv_array_destroy(drv->mappings);
+       drv_array_destroy(drv->combos);
 
        pthread_mutex_unlock(&drv->driver_lock);
        pthread_mutex_destroy(&drv->driver_lock);
@@ -202,8 +207,8 @@ struct combination *drv_get_combination(struct driver *drv, uint32_t format, uin
 
        best = NULL;
        uint32_t i;
-       for (i = 0; i < drv->combos.size; i++) {
-               curr = &drv->combos.data[i];
+       for (i = 0; i < drv_array_size(drv->combos); i++) {
+               curr = drv_array_at_idx(drv->combos, i);
                if ((format == curr->format) && use_flags == (curr->use_flags & use_flags))
                        if (!best || best->metadata.priority < curr->metadata.priority)
                                best = curr;
@@ -382,78 +387,103 @@ destroy_bo:
        return NULL;
 }
 
-void *drv_bo_map(struct bo *bo, uint32_t x, uint32_t y, uint32_t width, uint32_t height,
-                uint32_t map_flags, struct mapping **map_data, size_t plane)
+void *drv_bo_map(struct bo *bo, const struct rectangle *rect, uint32_t map_flags,
+                struct mapping **map_data, size_t plane)
 {
-       void *ptr;
+       uint32_t i;
        uint8_t *addr;
-       size_t offset;
-       struct mapping *mapping;
+       struct mapping mapping;
 
-       assert(width > 0);
-       assert(height > 0);
-       assert(x + width <= drv_bo_get_width(bo));
-       assert(y + height <= drv_bo_get_height(bo));
+       assert(rect->width >= 0);
+       assert(rect->height >= 0);
+       assert(rect->x + rect->width <= drv_bo_get_width(bo));
+       assert(rect->y + rect->height <= drv_bo_get_height(bo));
        assert(BO_MAP_READ_WRITE & map_flags);
        /* No CPU access for protected buffers. */
        assert(!(bo->use_flags & BO_USE_PROTECTED));
 
+       memset(&mapping, 0, sizeof(mapping));
+       mapping.rect = *rect;
+       mapping.refcount = 1;
+
        pthread_mutex_lock(&bo->drv->driver_lock);
 
-       if (!drmHashLookup(bo->drv->map_table, bo->handles[plane].u32, &ptr)) {
-               mapping = (struct mapping *)ptr;
-               /* TODO(gsingh): support mapping same buffer with different flags. */
-               assert(mapping->vma->map_flags == map_flags);
-               mapping->vma->refcount++;
+       for (i = 0; i < drv_array_size(bo->drv->mappings); i++) {
+               struct mapping *prior = (struct mapping *)drv_array_at_idx(bo->drv->mappings, i);
+               if (prior->vma->handle != bo->handles[plane].u32 ||
+                   prior->vma->map_flags != map_flags)
+                       continue;
+
+               if (rect->x != prior->rect.x || rect->y != prior->rect.y ||
+                   rect->width != prior->rect.width || rect->height != prior->rect.height)
+                       continue;
+
+               prior->refcount++;
+               *map_data = prior;
+               goto exact_match;
+       }
+
+       for (i = 0; i < drv_array_size(bo->drv->mappings); i++) {
+               struct mapping *prior = (struct mapping *)drv_array_at_idx(bo->drv->mappings, i);
+               if (prior->vma->handle != bo->handles[plane].u32 ||
+                   prior->vma->map_flags != map_flags)
+                       continue;
+
+               prior->vma->refcount++;
+               mapping.vma = prior->vma;
                goto success;
        }
 
-       mapping = calloc(1, sizeof(*mapping));
-       mapping->vma = calloc(1, sizeof(*mapping->vma));
-       addr = bo->drv->backend->bo_map(bo, mapping, plane, map_flags);
+       mapping.vma = calloc(1, sizeof(*mapping.vma));
+       addr = bo->drv->backend->bo_map(bo, mapping.vma, plane, map_flags);
        if (addr == MAP_FAILED) {
                *map_data = NULL;
-               free(mapping->vma);
-               free(mapping);
+               free(mapping.vma);
                pthread_mutex_unlock(&bo->drv->driver_lock);
                return MAP_FAILED;
        }
 
-       mapping->vma->refcount = 1;
-       mapping->vma->addr = addr;
-       mapping->vma->handle = bo->handles[plane].u32;
-       mapping->vma->map_flags = map_flags;
-       drmHashInsert(bo->drv->map_table, bo->handles[plane].u32, (void *)mapping);
+       mapping.vma->refcount = 1;
+       mapping.vma->addr = addr;
+       mapping.vma->handle = bo->handles[plane].u32;
+       mapping.vma->map_flags = map_flags;
 
 success:
-       drv_bo_invalidate(bo, mapping);
-       *map_data = mapping;
-       offset = drv_bo_get_plane_stride(bo, plane) * y;
-       offset += drv_stride_from_format(bo->format, x, plane);
-       addr = (uint8_t *)mapping->vma->addr;
-       addr += drv_bo_get_plane_offset(bo, plane) + offset;
+       *map_data = drv_array_append(bo->drv->mappings, &mapping);
+exact_match:
+       drv_bo_invalidate(bo, *map_data);
+       addr = (uint8_t *)((*map_data)->vma->addr);
+       addr += drv_bo_get_plane_offset(bo, plane);
        pthread_mutex_unlock(&bo->drv->driver_lock);
-
        return (void *)addr;
 }
 
 int drv_bo_unmap(struct bo *bo, struct mapping *mapping)
 {
+       uint32_t i;
        int ret = drv_bo_flush(bo, mapping);
        if (ret)
                return ret;
 
        pthread_mutex_lock(&bo->drv->driver_lock);
 
+       if (--mapping->refcount)
+               goto out;
+
        if (!--mapping->vma->refcount) {
-               ret = bo->drv->backend->bo_unmap(bo, mapping);
-               drmHashDelete(bo->drv->map_table, mapping->vma->handle);
+               ret = bo->drv->backend->bo_unmap(bo, mapping->vma);
                free(mapping->vma);
-               free(mapping);
        }
 
-       pthread_mutex_unlock(&bo->drv->driver_lock);
+       for (i = 0; i < drv_array_size(bo->drv->mappings); i++) {
+               if (mapping == (struct mapping *)drv_array_at_idx(bo->drv->mappings, i)) {
+                       drv_array_remove(bo->drv->mappings, i);
+                       break;
+               }
+       }
 
+out:
+       pthread_mutex_unlock(&bo->drv->driver_lock);
        return ret;
 }
 
@@ -463,6 +493,7 @@ int drv_bo_invalidate(struct bo *bo, struct mapping *mapping)
 
        assert(mapping);
        assert(mapping->vma);
+       assert(mapping->refcount > 0);
        assert(mapping->vma->refcount > 0);
 
        if (bo->drv->backend->bo_invalidate)
@@ -477,6 +508,7 @@ int drv_bo_flush(struct bo *bo, struct mapping *mapping)
 
        assert(mapping);
        assert(mapping->vma);
+       assert(mapping->refcount > 0);
        assert(mapping->vma->refcount > 0);
        assert(!(bo->use_flags & BO_USE_PROTECTED));