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-rw-r--r--freedreno/kgsl/kgsl_bo.c311
1 files changed, 311 insertions, 0 deletions
diff --git a/freedreno/kgsl/kgsl_bo.c b/freedreno/kgsl/kgsl_bo.c
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+++ b/freedreno/kgsl/kgsl_bo.c
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+/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
+
+/*
+ * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
+ *
+ * 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.
+ *
+ * Authors:
+ * Rob Clark <robclark@freedesktop.org>
+ */
+
+#include "kgsl_priv.h"
+
+#include <linux/fb.h>
+
+static int set_memtype(struct fd_device *dev, uint32_t handle, uint32_t flags)
+{
+ struct drm_kgsl_gem_memtype req = {
+ .handle = handle,
+ .type = flags & DRM_FREEDRENO_GEM_TYPE_MEM_MASK,
+ };
+
+ return drmCommandWrite(dev->fd, DRM_KGSL_GEM_SETMEMTYPE,
+ &req, sizeof(req));
+}
+
+static int bo_alloc(struct kgsl_bo *kgsl_bo)
+{
+ struct fd_bo *bo = &kgsl_bo->base;
+ if (!kgsl_bo->offset) {
+ struct drm_kgsl_gem_alloc req = {
+ .handle = bo->handle,
+ };
+ int ret;
+
+ /* if the buffer is already backed by pages then this
+ * doesn't actually do anything (other than giving us
+ * the offset)
+ */
+ ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_ALLOC,
+ &req, sizeof(req));
+ if (ret) {
+ ERROR_MSG("alloc failed: %s", strerror(errno));
+ return ret;
+ }
+
+ kgsl_bo->offset = req.offset;
+ }
+
+ return 0;
+}
+
+static int kgsl_bo_offset(struct fd_bo *bo, uint64_t *offset)
+{
+ struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
+ int ret = bo_alloc(kgsl_bo);
+ if (ret)
+ return ret;
+ *offset = kgsl_bo->offset;
+ return 0;
+}
+
+static int kgsl_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
+{
+ uint32_t timestamp = kgsl_bo_get_timestamp(to_kgsl_bo(bo));
+
+ if (op & DRM_FREEDRENO_PREP_NOSYNC) {
+ uint32_t current;
+ int ret;
+
+ /* special case for is_idle().. we can't really handle that
+ * properly in kgsl (perhaps we need a way to just disable
+ * the bo-cache for kgsl?)
+ */
+ if (!pipe)
+ return -EBUSY;
+
+ ret = kgsl_pipe_timestamp(to_kgsl_pipe(pipe), &current);
+ if (ret)
+ return ret;
+
+ if (timestamp > current)
+ return -EBUSY;
+
+ return 0;
+ }
+
+ if (timestamp)
+ fd_pipe_wait(pipe, timestamp);
+
+ return 0;
+}
+
+static void kgsl_bo_cpu_fini(struct fd_bo *bo)
+{
+}
+
+static int kgsl_bo_madvise(struct fd_bo *bo, int willneed)
+{
+ return willneed; /* not supported by kgsl */
+}
+
+static void kgsl_bo_destroy(struct fd_bo *bo)
+{
+ struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
+ free(kgsl_bo);
+
+}
+
+static const struct fd_bo_funcs funcs = {
+ .offset = kgsl_bo_offset,
+ .cpu_prep = kgsl_bo_cpu_prep,
+ .cpu_fini = kgsl_bo_cpu_fini,
+ .madvise = kgsl_bo_madvise,
+ .destroy = kgsl_bo_destroy,
+};
+
+/* allocate a buffer handle: */
+drm_private int kgsl_bo_new_handle(struct fd_device *dev,
+ uint32_t size, uint32_t flags, uint32_t *handle)
+{
+ struct drm_kgsl_gem_create req = {
+ .size = size,
+ };
+ int ret;
+
+ ret = drmCommandWriteRead(dev->fd, DRM_KGSL_GEM_CREATE,
+ &req, sizeof(req));
+ if (ret)
+ return ret;
+
+ // TODO make flags match msm driver, since kgsl is legacy..
+ // translate flags in kgsl..
+
+ set_memtype(dev, req.handle, flags);
+
+ *handle = req.handle;
+
+ return 0;
+}
+
+/* allocate a new buffer object */
+drm_private struct fd_bo * kgsl_bo_from_handle(struct fd_device *dev,
+ uint32_t size, uint32_t handle)
+{
+ struct kgsl_bo *kgsl_bo;
+ struct fd_bo *bo;
+ unsigned i;
+
+ kgsl_bo = calloc(1, sizeof(*kgsl_bo));
+ if (!kgsl_bo)
+ return NULL;
+
+ bo = &kgsl_bo->base;
+ bo->funcs = &funcs;
+
+ for (i = 0; i < ARRAY_SIZE(kgsl_bo->list); i++)
+ list_inithead(&kgsl_bo->list[i]);
+
+ return bo;
+}
+
+drm_public struct fd_bo *
+fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size)
+{
+ struct fd_bo *bo;
+
+ if (!is_kgsl_pipe(pipe))
+ return NULL;
+
+ bo = fd_bo_new(pipe->dev, 1, 0);
+
+ /* this is fugly, but works around a bug in the kernel..
+ * priv->memdesc.size never gets set, so getbufinfo ioctl
+ * thinks the buffer hasn't be allocate and fails
+ */
+ if (bo) {
+ void *fbmem = drm_mmap(NULL, size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, fbfd, 0);
+ struct kgsl_map_user_mem req = {
+ .memtype = KGSL_USER_MEM_TYPE_ADDR,
+ .len = size,
+ .offset = 0,
+ .hostptr = (unsigned long)fbmem,
+ };
+ struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
+ int ret;
+
+ ret = ioctl(to_kgsl_pipe(pipe)->fd, IOCTL_KGSL_MAP_USER_MEM, &req);
+ if (ret) {
+ ERROR_MSG("mapping user mem failed: %s",
+ strerror(errno));
+ goto fail;
+ }
+ kgsl_bo->gpuaddr = req.gpuaddr;
+ bo->map = fbmem;
+ }
+
+ return bo;
+fail:
+ if (bo)
+ fd_bo_del(bo);
+ return NULL;
+}
+
+drm_private uint32_t kgsl_bo_gpuaddr(struct kgsl_bo *kgsl_bo, uint32_t offset)
+{
+ struct fd_bo *bo = &kgsl_bo->base;
+ if (!kgsl_bo->gpuaddr) {
+ struct drm_kgsl_gem_bufinfo req = {
+ .handle = bo->handle,
+ };
+ int ret;
+
+ ret = bo_alloc(kgsl_bo);
+ if (ret) {
+ return ret;
+ }
+
+ ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
+ &req, sizeof(req));
+ if (ret) {
+ ERROR_MSG("get bufinfo failed: %s", strerror(errno));
+ return 0;
+ }
+
+ kgsl_bo->gpuaddr = req.gpuaddr[0];
+ }
+ return kgsl_bo->gpuaddr + offset;
+}
+
+/*
+ * Super-cheezy way to synchronization between mesa and ddx.. the
+ * SET_ACTIVE ioctl gives us a way to stash a 32b # w/ a GEM bo, and
+ * GET_BUFINFO gives us a way to retrieve it. We use this to stash
+ * the timestamp of the last ISSUEIBCMDS on the buffer.
+ *
+ * To avoid an obscene amount of syscalls, we:
+ * 1) Only set the timestamp for buffers w/ an flink name, ie.
+ * only buffers shared across processes. This is enough to
+ * catch the DRI2 buffers.
+ * 2) Only set the timestamp for buffers submitted to the 3d ring
+ * and only check the timestamps on buffers submitted to the
+ * 2d ring. This should be enough to handle synchronizing of
+ * presentation blit. We could do synchronization in the other
+ * direction too, but that would be problematic if we are using
+ * the 3d ring from DDX, since client side wouldn't know this.
+ *
+ * The waiting on timestamp happens before flush, and setting of
+ * timestamp happens after flush. It is transparent to the user
+ * of libdrm_freedreno as all the tracking of buffers happens via
+ * _emit_reloc()..
+ */
+
+drm_private void kgsl_bo_set_timestamp(struct kgsl_bo *kgsl_bo,
+ uint32_t timestamp)
+{
+ struct fd_bo *bo = &kgsl_bo->base;
+ if (bo->name) {
+ struct drm_kgsl_gem_active req = {
+ .handle = bo->handle,
+ .active = timestamp,
+ };
+ int ret;
+
+ ret = drmCommandWrite(bo->dev->fd, DRM_KGSL_GEM_SET_ACTIVE,
+ &req, sizeof(req));
+ if (ret) {
+ ERROR_MSG("set active failed: %s", strerror(errno));
+ }
+ }
+}
+
+drm_private uint32_t kgsl_bo_get_timestamp(struct kgsl_bo *kgsl_bo)
+{
+ struct fd_bo *bo = &kgsl_bo->base;
+ uint32_t timestamp = 0;
+ if (bo->name) {
+ struct drm_kgsl_gem_bufinfo req = {
+ .handle = bo->handle,
+ };
+ int ret;
+
+ ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
+ &req, sizeof(req));
+ if (ret) {
+ ERROR_MSG("get bufinfo failed: %s", strerror(errno));
+ return 0;
+ }
+
+ timestamp = req.active;
+ }
+ return timestamp;
+}