drm/tegra: Introduce tegra_drm_submit()

Command stream submissions are the same across all devices that expose
a channel to userspace, so move the code into a generic function.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 2d8f925899de467eb5a1548ee5fd7e837841cf5f..6f42f1692f2942b0377276c40f634300bbfca3f0 100644 (file)
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -109,6 +109,135 @@ static void tegra_drm_lastclose(struct drm_device *drm)
        tegra_fbdev_restore_mode(tegra->fbdev);
 }
 
+static struct host1x_bo *
+host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle)
+{
+       struct drm_gem_object *gem;
+       struct tegra_bo *bo;
+
+       gem = drm_gem_object_lookup(drm, file, handle);
+       if (!gem)
+               return NULL;
+
+       mutex_lock(&drm->struct_mutex);
+       drm_gem_object_unreference(gem);
+       mutex_unlock(&drm->struct_mutex);
+
+       bo = to_tegra_bo(gem);
+       return &bo->base;
+}
+
+int tegra_drm_submit(struct tegra_drm_context *context,
+                    struct drm_tegra_submit *args, struct drm_device *drm,
+                    struct drm_file *file)
+{
+       unsigned int num_cmdbufs = args->num_cmdbufs;
+       unsigned int num_relocs = args->num_relocs;
+       unsigned int num_waitchks = args->num_waitchks;
+       struct drm_tegra_cmdbuf __user *cmdbufs =
+               (void * __user)(uintptr_t)args->cmdbufs;
+       struct drm_tegra_reloc __user *relocs =
+               (void * __user)(uintptr_t)args->relocs;
+       struct drm_tegra_waitchk __user *waitchks =
+               (void * __user)(uintptr_t)args->waitchks;
+       struct drm_tegra_syncpt syncpt;
+       struct host1x_job *job;
+       int err;
+
+       /* We don't yet support other than one syncpt_incr struct per submit */
+       if (args->num_syncpts != 1)
+               return -EINVAL;
+
+       job = host1x_job_alloc(context->channel, args->num_cmdbufs,
+                              args->num_relocs, args->num_waitchks);
+       if (!job)
+               return -ENOMEM;
+
+       job->num_relocs = args->num_relocs;
+       job->num_waitchk = args->num_waitchks;
+       job->client = (u32)args->context;
+       job->class = context->client->base.class;
+       job->serialize = true;
+
+       while (num_cmdbufs) {
+               struct drm_tegra_cmdbuf cmdbuf;
+               struct host1x_bo *bo;
+
+               err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));
+               if (err)
+                       goto fail;
+
+               bo = host1x_bo_lookup(drm, file, cmdbuf.handle);
+               if (!bo) {
+                       err = -ENOENT;
+                       goto fail;
+               }
+
+               host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
+               num_cmdbufs--;
+               cmdbufs++;
+       }
+
+       err = copy_from_user(job->relocarray, relocs,
+                            sizeof(*relocs) * num_relocs);
+       if (err)
+               goto fail;
+
+       while (num_relocs--) {
+               struct host1x_reloc *reloc = &job->relocarray[num_relocs];
+               struct host1x_bo *cmdbuf, *target;
+
+               cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf);
+               target = host1x_bo_lookup(drm, file, (u32)reloc->target);
+
+               reloc->cmdbuf = cmdbuf;
+               reloc->target = target;
+
+               if (!reloc->target || !reloc->cmdbuf) {
+                       err = -ENOENT;
+                       goto fail;
+               }
+       }
+
+       err = copy_from_user(job->waitchk, waitchks,
+                            sizeof(*waitchks) * num_waitchks);
+       if (err)
+               goto fail;
+
+       err = copy_from_user(&syncpt, (void * __user)(uintptr_t)args->syncpts,
+                            sizeof(syncpt));
+       if (err)
+               goto fail;
+
+       job->is_addr_reg = context->client->ops->is_addr_reg;
+       job->syncpt_incrs = syncpt.incrs;
+       job->syncpt_id = syncpt.id;
+       job->timeout = 10000;
+
+       if (args->timeout && args->timeout < 10000)
+               job->timeout = args->timeout;
+
+       err = host1x_job_pin(job, context->client->base.dev);
+       if (err)
+               goto fail;
+
+       err = host1x_job_submit(job);
+       if (err)
+               goto fail_submit;
+
+       args->fence = job->syncpt_end;
+
+       host1x_job_put(job);
+       return 0;
+
+fail_submit:
+       host1x_job_unpin(job);
+fail:
+       host1x_job_put(job);
+       return err;
+}
+
+
 #ifdef CONFIG_DRM_TEGRA_STAGING
 static struct tegra_drm_context *tegra_drm_get_context(__u64 context)
 {

diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index dc4b994fe6137f117adf3797546caafd46f21325..e3cd3ed438d563d0383ecf1a2dfe0f694a4bc977 100644 (file)
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -51,11 +51,16 @@ struct tegra_drm_client_ops {
        int (*open_channel)(struct tegra_drm_client *client,
                            struct tegra_drm_context *context);
        void (*close_channel)(struct tegra_drm_context *context);
+       int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
        int (*submit)(struct tegra_drm_context *context,
                      struct drm_tegra_submit *args, struct drm_device *drm,
                      struct drm_file *file);
 };
 
+int tegra_drm_submit(struct tegra_drm_context *context,
+                    struct drm_tegra_submit *args, struct drm_device *drm,
+                    struct drm_file *file);
+
 struct tegra_drm_client {
        struct host1x_client base;
        struct list_head list;

diff --git a/drivers/gpu/drm/tegra/gr2d.c b/drivers/gpu/drm/tegra/gr2d.c
index bbeedc24d00442fce7bf152a214c00cf30c4b054..73b79bad613e500c85f46b807ad20f63224449e1 100644 (file)
--- a/drivers/gpu/drm/tegra/gr2d.c
+++ b/drivers/gpu/drm/tegra/gr2d.c
@@ -91,25 +91,6 @@ static void gr2d_close_channel(struct tegra_drm_context *context)
        host1x_channel_put(context->channel);
 }
 
-static struct host1x_bo *host1x_bo_lookup(struct drm_device *drm,
-                                         struct drm_file *file,
-                                         u32 handle)
-{
-       struct drm_gem_object *gem;
-       struct tegra_bo *bo;
-
-       gem = drm_gem_object_lookup(drm, file, handle);
-       if (!gem)
-               return NULL;
-
-       mutex_lock(&drm->struct_mutex);
-       drm_gem_object_unreference(gem);
-       mutex_unlock(&drm->struct_mutex);
-
-       bo = to_tegra_bo(gem);
-       return &bo->base;
-}
-
 static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset)
 {
        struct gr2d *gr2d = dev_get_drvdata(dev);
@@ -135,120 +116,11 @@ static int gr2d_is_addr_reg(struct device *dev, u32 class, u32 offset)
        return 0;
 }
 
-static int gr2d_submit(struct tegra_drm_context *context,
-                      struct drm_tegra_submit *args, struct drm_device *drm,
-                      struct drm_file *file)
-{
-       unsigned int num_cmdbufs = args->num_cmdbufs;
-       unsigned int num_relocs = args->num_relocs;
-       unsigned int num_waitchks = args->num_waitchks;
-       struct drm_tegra_cmdbuf __user *cmdbufs =
-               (void * __user)(uintptr_t)args->cmdbufs;
-       struct drm_tegra_reloc __user *relocs =
-               (void * __user)(uintptr_t)args->relocs;
-       struct drm_tegra_waitchk __user *waitchks =
-               (void * __user)(uintptr_t)args->waitchks;
-       struct drm_tegra_syncpt syncpt;
-       struct host1x_job *job;
-       int err;
-
-       /* We don't yet support other than one syncpt_incr struct per submit */
-       if (args->num_syncpts != 1)
-               return -EINVAL;
-
-       job = host1x_job_alloc(context->channel, args->num_cmdbufs,
-                              args->num_relocs, args->num_waitchks);
-       if (!job)
-               return -ENOMEM;
-
-       job->num_relocs = args->num_relocs;
-       job->num_waitchk = args->num_waitchks;
-       job->client = (u32)args->context;
-       job->class = context->client->base.class;
-       job->serialize = true;
-
-       while (num_cmdbufs) {
-               struct drm_tegra_cmdbuf cmdbuf;
-               struct host1x_bo *bo;
-
-               err = copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf));
-               if (err)
-                       goto fail;
-
-               bo = host1x_bo_lookup(drm, file, cmdbuf.handle);
-               if (!bo) {
-                       err = -ENOENT;
-                       goto fail;
-               }
-
-               host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
-               num_cmdbufs--;
-               cmdbufs++;
-       }
-
-       err = copy_from_user(job->relocarray, relocs,
-                            sizeof(*relocs) * num_relocs);
-       if (err)
-               goto fail;
-
-       while (num_relocs--) {
-               struct host1x_reloc *reloc = &job->relocarray[num_relocs];
-               struct host1x_bo *cmdbuf, *target;
-
-               cmdbuf = host1x_bo_lookup(drm, file, (u32)reloc->cmdbuf);
-               target = host1x_bo_lookup(drm, file, (u32)reloc->target);
-
-               reloc->cmdbuf = cmdbuf;
-               reloc->target = target;
-
-               if (!reloc->target || !reloc->cmdbuf) {
-                       err = -ENOENT;
-                       goto fail;
-               }
-       }
-
-       err = copy_from_user(job->waitchk, waitchks,
-                            sizeof(*waitchks) * num_waitchks);
-       if (err)
-               goto fail;
-
-       err = copy_from_user(&syncpt, (void * __user)(uintptr_t)args->syncpts,
-                            sizeof(syncpt));
-       if (err)
-               goto fail;
-
-       job->syncpt_id = syncpt.id;
-       job->syncpt_incrs = syncpt.incrs;
-       job->timeout = 10000;
-       job->is_addr_reg = gr2d_is_addr_reg;
-
-       if (args->timeout && args->timeout < 10000)
-               job->timeout = args->timeout;
-
-       err = host1x_job_pin(job, context->client->base.dev);
-       if (err)
-               goto fail;
-
-       err = host1x_job_submit(job);
-       if (err)
-               goto fail_submit;
-
-       args->fence = job->syncpt_end;
-
-       host1x_job_put(job);
-       return 0;
-
-fail_submit:
-       host1x_job_unpin(job);
-fail:
-       host1x_job_put(job);
-       return err;
-}
-
 static const struct tegra_drm_client_ops gr2d_ops = {
        .open_channel = gr2d_open_channel,
        .close_channel = gr2d_close_channel,
-       .submit = gr2d_submit,
+       .is_addr_reg = gr2d_is_addr_reg,
+       .submit = tegra_drm_submit,
 };
 
 static const struct of_device_id gr2d_match[] = {