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Diffstat (limited to 'src/gallium/drivers/v3d/v3d_bufmgr.c')
-rw-r--r--src/gallium/drivers/v3d/v3d_bufmgr.c552
1 files changed, 552 insertions, 0 deletions
diff --git a/src/gallium/drivers/v3d/v3d_bufmgr.c b/src/gallium/drivers/v3d/v3d_bufmgr.c
new file mode 100644
index 00000000000..ef2a5fa07be
--- /dev/null
+++ b/src/gallium/drivers/v3d/v3d_bufmgr.c
@@ -0,0 +1,552 @@
+/*
+ * Copyright © 2014-2017 Broadcom
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <err.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include "util/u_hash_table.h"
+#include "util/u_memory.h"
+#include "util/ralloc.h"
+
+#include "v3d_context.h"
+#include "v3d_screen.h"
+
+#ifdef HAVE_VALGRIND
+#include <valgrind.h>
+#include <memcheck.h>
+#define VG(x) x
+#else
+#define VG(x)
+#endif
+
+static bool dump_stats = false;
+
+static void
+vc5_bo_cache_free_all(struct vc5_bo_cache *cache);
+
+static void
+vc5_bo_dump_stats(struct vc5_screen *screen)
+{
+ struct vc5_bo_cache *cache = &screen->bo_cache;
+
+ fprintf(stderr, " BOs allocated: %d\n", screen->bo_count);
+ fprintf(stderr, " BOs size: %dkb\n", screen->bo_size / 1024);
+ fprintf(stderr, " BOs cached: %d\n", cache->bo_count);
+ fprintf(stderr, " BOs cached size: %dkb\n", cache->bo_size / 1024);
+
+ if (!list_empty(&cache->time_list)) {
+ struct vc5_bo *first = LIST_ENTRY(struct vc5_bo,
+ cache->time_list.next,
+ time_list);
+ struct vc5_bo *last = LIST_ENTRY(struct vc5_bo,
+ cache->time_list.prev,
+ time_list);
+
+ fprintf(stderr, " oldest cache time: %ld\n",
+ (long)first->free_time);
+ fprintf(stderr, " newest cache time: %ld\n",
+ (long)last->free_time);
+
+ struct timespec time;
+ clock_gettime(CLOCK_MONOTONIC, &time);
+ fprintf(stderr, " now: %ld\n",
+ time.tv_sec);
+ }
+}
+
+static void
+vc5_bo_remove_from_cache(struct vc5_bo_cache *cache, struct vc5_bo *bo)
+{
+ list_del(&bo->time_list);
+ list_del(&bo->size_list);
+ cache->bo_count--;
+ cache->bo_size -= bo->size;
+}
+
+static struct vc5_bo *
+vc5_bo_from_cache(struct vc5_screen *screen, uint32_t size, const char *name)
+{
+ struct vc5_bo_cache *cache = &screen->bo_cache;
+ uint32_t page_index = size / 4096 - 1;
+
+ if (cache->size_list_size <= page_index)
+ return NULL;
+
+ struct vc5_bo *bo = NULL;
+ mtx_lock(&cache->lock);
+ if (!list_empty(&cache->size_list[page_index])) {
+ bo = LIST_ENTRY(struct vc5_bo, cache->size_list[page_index].next,
+ size_list);
+
+ /* Check that the BO has gone idle. If not, then we want to
+ * allocate something new instead, since we assume that the
+ * user will proceed to CPU map it and fill it with stuff.
+ */
+ if (!vc5_bo_wait(bo, 0, NULL)) {
+ mtx_unlock(&cache->lock);
+ return NULL;
+ }
+
+ pipe_reference_init(&bo->reference, 1);
+ vc5_bo_remove_from_cache(cache, bo);
+
+ bo->name = name;
+ }
+ mtx_unlock(&cache->lock);
+ return bo;
+}
+
+struct vc5_bo *
+vc5_bo_alloc(struct vc5_screen *screen, uint32_t size, const char *name)
+{
+ struct vc5_bo *bo;
+ int ret;
+
+ size = align(size, 4096);
+
+ bo = vc5_bo_from_cache(screen, size, name);
+ if (bo) {
+ if (dump_stats) {
+ fprintf(stderr, "Allocated %s %dkb from cache:\n",
+ name, size / 1024);
+ vc5_bo_dump_stats(screen);
+ }
+ return bo;
+ }
+
+ bo = CALLOC_STRUCT(vc5_bo);
+ if (!bo)
+ return NULL;
+
+ pipe_reference_init(&bo->reference, 1);
+ bo->screen = screen;
+ bo->size = size;
+ bo->name = name;
+ bo->private = true;
+
+ retry:
+ ;
+
+ bool cleared_and_retried = false;
+ struct drm_v3d_create_bo create = {
+ .size = size
+ };
+
+ ret = vc5_ioctl(screen->fd, DRM_IOCTL_V3D_CREATE_BO, &create);
+ bo->handle = create.handle;
+ bo->offset = create.offset;
+
+ if (ret != 0) {
+ if (!list_empty(&screen->bo_cache.time_list) &&
+ !cleared_and_retried) {
+ cleared_and_retried = true;
+ vc5_bo_cache_free_all(&screen->bo_cache);
+ goto retry;
+ }
+
+ free(bo);
+ return NULL;
+ }
+
+ screen->bo_count++;
+ screen->bo_size += bo->size;
+ if (dump_stats) {
+ fprintf(stderr, "Allocated %s %dkb:\n", name, size / 1024);
+ vc5_bo_dump_stats(screen);
+ }
+
+ return bo;
+}
+
+void
+vc5_bo_last_unreference(struct vc5_bo *bo)
+{
+ struct vc5_screen *screen = bo->screen;
+
+ struct timespec time;
+ clock_gettime(CLOCK_MONOTONIC, &time);
+ mtx_lock(&screen->bo_cache.lock);
+ vc5_bo_last_unreference_locked_timed(bo, time.tv_sec);
+ mtx_unlock(&screen->bo_cache.lock);
+}
+
+static void
+vc5_bo_free(struct vc5_bo *bo)
+{
+ struct vc5_screen *screen = bo->screen;
+
+ if (bo->map) {
+ if (using_vc5_simulator && bo->name &&
+ strcmp(bo->name, "winsys") == 0) {
+ free(bo->map);
+ } else {
+ munmap(bo->map, bo->size);
+ VG(VALGRIND_FREELIKE_BLOCK(bo->map, 0));
+ }
+ }
+
+ struct drm_gem_close c;
+ memset(&c, 0, sizeof(c));
+ c.handle = bo->handle;
+ int ret = vc5_ioctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &c);
+ if (ret != 0)
+ fprintf(stderr, "close object %d: %s\n", bo->handle, strerror(errno));
+
+ screen->bo_count--;
+ screen->bo_size -= bo->size;
+
+ if (dump_stats) {
+ fprintf(stderr, "Freed %s%s%dkb:\n",
+ bo->name ? bo->name : "",
+ bo->name ? " " : "",
+ bo->size / 1024);
+ vc5_bo_dump_stats(screen);
+ }
+
+ free(bo);
+}
+
+static void
+free_stale_bos(struct vc5_screen *screen, time_t time)
+{
+ struct vc5_bo_cache *cache = &screen->bo_cache;
+ bool freed_any = false;
+
+ list_for_each_entry_safe(struct vc5_bo, bo, &cache->time_list,
+ time_list) {
+ if (dump_stats && !freed_any) {
+ fprintf(stderr, "Freeing stale BOs:\n");
+ vc5_bo_dump_stats(screen);
+ freed_any = true;
+ }
+
+ /* If it's more than a second old, free it. */
+ if (time - bo->free_time > 2) {
+ vc5_bo_remove_from_cache(cache, bo);
+ vc5_bo_free(bo);
+ } else {
+ break;
+ }
+ }
+
+ if (dump_stats && freed_any) {
+ fprintf(stderr, "Freed stale BOs:\n");
+ vc5_bo_dump_stats(screen);
+ }
+}
+
+static void
+vc5_bo_cache_free_all(struct vc5_bo_cache *cache)
+{
+ mtx_lock(&cache->lock);
+ list_for_each_entry_safe(struct vc5_bo, bo, &cache->time_list,
+ time_list) {
+ vc5_bo_remove_from_cache(cache, bo);
+ vc5_bo_free(bo);
+ }
+ mtx_unlock(&cache->lock);
+}
+
+void
+vc5_bo_last_unreference_locked_timed(struct vc5_bo *bo, time_t time)
+{
+ struct vc5_screen *screen = bo->screen;
+ struct vc5_bo_cache *cache = &screen->bo_cache;
+ uint32_t page_index = bo->size / 4096 - 1;
+
+ if (!bo->private) {
+ vc5_bo_free(bo);
+ return;
+ }
+
+ if (cache->size_list_size <= page_index) {
+ struct list_head *new_list =
+ ralloc_array(screen, struct list_head, page_index + 1);
+
+ /* Move old list contents over (since the array has moved, and
+ * therefore the pointers to the list heads have to change).
+ */
+ for (int i = 0; i < cache->size_list_size; i++) {
+ struct list_head *old_head = &cache->size_list[i];
+ if (list_empty(old_head))
+ list_inithead(&new_list[i]);
+ else {
+ new_list[i].next = old_head->next;
+ new_list[i].prev = old_head->prev;
+ new_list[i].next->prev = &new_list[i];
+ new_list[i].prev->next = &new_list[i];
+ }
+ }
+ for (int i = cache->size_list_size; i < page_index + 1; i++)
+ list_inithead(&new_list[i]);
+
+ cache->size_list = new_list;
+ cache->size_list_size = page_index + 1;
+ }
+
+ bo->free_time = time;
+ list_addtail(&bo->size_list, &cache->size_list[page_index]);
+ list_addtail(&bo->time_list, &cache->time_list);
+ cache->bo_count++;
+ cache->bo_size += bo->size;
+ if (dump_stats) {
+ fprintf(stderr, "Freed %s %dkb to cache:\n",
+ bo->name, bo->size / 1024);
+ vc5_bo_dump_stats(screen);
+ }
+ bo->name = NULL;
+
+ free_stale_bos(screen, time);
+}
+
+static struct vc5_bo *
+vc5_bo_open_handle(struct vc5_screen *screen,
+ uint32_t winsys_stride,
+ uint32_t handle, uint32_t size)
+{
+ struct vc5_bo *bo;
+
+ assert(size);
+
+ mtx_lock(&screen->bo_handles_mutex);
+
+ bo = util_hash_table_get(screen->bo_handles, (void*)(uintptr_t)handle);
+ if (bo) {
+ pipe_reference(NULL, &bo->reference);
+ goto done;
+ }
+
+ bo = CALLOC_STRUCT(vc5_bo);
+ pipe_reference_init(&bo->reference, 1);
+ bo->screen = screen;
+ bo->handle = handle;
+ bo->size = size;
+ bo->name = "winsys";
+ bo->private = false;
+
+#ifdef USE_V3D_SIMULATOR
+ vc5_simulator_open_from_handle(screen->fd, winsys_stride,
+ bo->handle, bo->size);
+ bo->map = malloc(bo->size);
+#endif
+
+ struct drm_v3d_get_bo_offset get = {
+ .handle = handle,
+ };
+ int ret = vc5_ioctl(screen->fd, DRM_IOCTL_V3D_GET_BO_OFFSET, &get);
+ if (ret) {
+ fprintf(stderr, "Failed to get BO offset: %s\n",
+ strerror(errno));
+ free(bo->map);
+ free(bo);
+ return NULL;
+ }
+ bo->offset = get.offset;
+ assert(bo->offset != 0);
+
+ util_hash_table_set(screen->bo_handles, (void *)(uintptr_t)handle, bo);
+
+done:
+ mtx_unlock(&screen->bo_handles_mutex);
+ return bo;
+}
+
+struct vc5_bo *
+vc5_bo_open_name(struct vc5_screen *screen, uint32_t name,
+ uint32_t winsys_stride)
+{
+ struct drm_gem_open o = {
+ .name = name
+ };
+ int ret = vc5_ioctl(screen->fd, DRM_IOCTL_GEM_OPEN, &o);
+ if (ret) {
+ fprintf(stderr, "Failed to open bo %d: %s\n",
+ name, strerror(errno));
+ return NULL;
+ }
+
+ return vc5_bo_open_handle(screen, winsys_stride, o.handle, o.size);
+}
+
+struct vc5_bo *
+vc5_bo_open_dmabuf(struct vc5_screen *screen, int fd, uint32_t winsys_stride)
+{
+ uint32_t handle;
+ int ret = drmPrimeFDToHandle(screen->fd, fd, &handle);
+ int size;
+ if (ret) {
+ fprintf(stderr, "Failed to get vc5 handle for dmabuf %d\n", fd);
+ return NULL;
+ }
+
+ /* Determine the size of the bo we were handed. */
+ size = lseek(fd, 0, SEEK_END);
+ if (size == -1) {
+ fprintf(stderr, "Couldn't get size of dmabuf fd %d.\n", fd);
+ return NULL;
+ }
+
+ return vc5_bo_open_handle(screen, winsys_stride, handle, size);
+}
+
+int
+vc5_bo_get_dmabuf(struct vc5_bo *bo)
+{
+ int fd;
+ int ret = drmPrimeHandleToFD(bo->screen->fd, bo->handle,
+ O_CLOEXEC, &fd);
+ if (ret != 0) {
+ fprintf(stderr, "Failed to export gem bo %d to dmabuf\n",
+ bo->handle);
+ return -1;
+ }
+
+ mtx_lock(&bo->screen->bo_handles_mutex);
+ bo->private = false;
+ util_hash_table_set(bo->screen->bo_handles, (void *)(uintptr_t)bo->handle, bo);
+ mtx_unlock(&bo->screen->bo_handles_mutex);
+
+ return fd;
+}
+
+bool
+vc5_bo_flink(struct vc5_bo *bo, uint32_t *name)
+{
+ struct drm_gem_flink flink = {
+ .handle = bo->handle,
+ };
+ int ret = vc5_ioctl(bo->screen->fd, DRM_IOCTL_GEM_FLINK, &flink);
+ if (ret) {
+ fprintf(stderr, "Failed to flink bo %d: %s\n",
+ bo->handle, strerror(errno));
+ free(bo);
+ return false;
+ }
+
+ bo->private = false;
+ *name = flink.name;
+
+ return true;
+}
+
+static int vc5_wait_bo_ioctl(int fd, uint32_t handle, uint64_t timeout_ns)
+{
+ struct drm_v3d_wait_bo wait = {
+ .handle = handle,
+ .timeout_ns = timeout_ns,
+ };
+ int ret = vc5_ioctl(fd, DRM_IOCTL_V3D_WAIT_BO, &wait);
+ if (ret == -1)
+ return -errno;
+ else
+ return 0;
+
+}
+
+bool
+vc5_bo_wait(struct vc5_bo *bo, uint64_t timeout_ns, const char *reason)
+{
+ struct vc5_screen *screen = bo->screen;
+
+ if (unlikely(V3D_DEBUG & V3D_DEBUG_PERF) && timeout_ns && reason) {
+ if (vc5_wait_bo_ioctl(screen->fd, bo->handle, 0) == -ETIME) {
+ fprintf(stderr, "Blocking on %s BO for %s\n",
+ bo->name, reason);
+ }
+ }
+
+ int ret = vc5_wait_bo_ioctl(screen->fd, bo->handle, timeout_ns);
+ if (ret) {
+ if (ret != -ETIME) {
+ fprintf(stderr, "wait failed: %d\n", ret);
+ abort();
+ }
+
+ return false;
+ }
+
+ return true;
+}
+
+void *
+vc5_bo_map_unsynchronized(struct vc5_bo *bo)
+{
+ uint64_t offset;
+ int ret;
+
+ if (bo->map)
+ return bo->map;
+
+ struct drm_v3d_mmap_bo map;
+ memset(&map, 0, sizeof(map));
+ map.handle = bo->handle;
+ ret = vc5_ioctl(bo->screen->fd, DRM_IOCTL_V3D_MMAP_BO, &map);
+ offset = map.offset;
+ if (ret != 0) {
+ fprintf(stderr, "map ioctl failure\n");
+ abort();
+ }
+
+ bo->map = mmap(NULL, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ bo->screen->fd, offset);
+ if (bo->map == MAP_FAILED) {
+ fprintf(stderr, "mmap of bo %d (offset 0x%016llx, size %d) failed\n",
+ bo->handle, (long long)offset, bo->size);
+ abort();
+ }
+ VG(VALGRIND_MALLOCLIKE_BLOCK(bo->map, bo->size, 0, false));
+
+ return bo->map;
+}
+
+void *
+vc5_bo_map(struct vc5_bo *bo)
+{
+ void *map = vc5_bo_map_unsynchronized(bo);
+
+ bool ok = vc5_bo_wait(bo, PIPE_TIMEOUT_INFINITE, "bo map");
+ if (!ok) {
+ fprintf(stderr, "BO wait for map failed\n");
+ abort();
+ }
+
+ return map;
+}
+
+void
+vc5_bufmgr_destroy(struct pipe_screen *pscreen)
+{
+ struct vc5_screen *screen = vc5_screen(pscreen);
+ struct vc5_bo_cache *cache = &screen->bo_cache;
+
+ vc5_bo_cache_free_all(cache);
+
+ if (dump_stats) {
+ fprintf(stderr, "BO stats after screen destroy:\n");
+ vc5_bo_dump_stats(screen);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 09:58:04 +0000