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path: root/drivers/gpu/drm/tegra/drm.c
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Diffstat (limited to 'drivers/gpu/drm/tegra/drm.c')
-rw-r--r--drivers/gpu/drm/tegra/drm.c154
1 files changed, 69 insertions, 85 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 7afe2f635f74..776c1513e582 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -38,26 +38,11 @@ static int tegra_atomic_check(struct drm_device *drm,
{
int err;
- err = drm_atomic_helper_check_modeset(drm, state);
+ err = drm_atomic_helper_check(drm, state);
if (err < 0)
return err;
- err = tegra_display_hub_atomic_check(drm, state);
- if (err < 0)
- return err;
-
- err = drm_atomic_normalize_zpos(drm, state);
- if (err < 0)
- return err;
-
- err = drm_atomic_helper_check_planes(drm, state);
- if (err < 0)
- return err;
-
- if (state->legacy_cursor_update)
- state->async_update = !drm_atomic_helper_async_check(drm, state);
-
- return 0;
+ return tegra_display_hub_atomic_check(drm, state);
}
static const struct drm_mode_config_funcs tegra_drm_mode_config_funcs = {
@@ -113,6 +98,10 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
goto free;
}
+ err = iova_cache_get();
+ if (err < 0)
+ goto domain;
+
geometry = &tegra->domain->geometry;
gem_start = geometry->aperture_start;
gem_end = geometry->aperture_end - CARVEOUT_SZ;
@@ -151,6 +140,8 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
drm->mode_config.allow_fb_modifiers = true;
+ drm->mode_config.normalize_zpos = true;
+
drm->mode_config.funcs = &tegra_drm_mode_config_funcs;
drm->mode_config.helper_private = &tegra_drm_mode_config_helpers;
@@ -204,11 +195,14 @@ config:
drm_mode_config_cleanup(drm);
if (tegra->domain) {
- iommu_domain_free(tegra->domain);
- drm_mm_takedown(&tegra->mm);
mutex_destroy(&tegra->mm_lock);
+ drm_mm_takedown(&tegra->mm);
put_iova_domain(&tegra->carveout.domain);
+ iova_cache_put();
}
+domain:
+ if (tegra->domain)
+ iommu_domain_free(tegra->domain);
free:
kfree(tegra);
return err;
@@ -230,10 +224,11 @@ static void tegra_drm_unload(struct drm_device *drm)
return;
if (tegra->domain) {
- iommu_domain_free(tegra->domain);
- drm_mm_takedown(&tegra->mm);
mutex_destroy(&tegra->mm_lock);
+ drm_mm_takedown(&tegra->mm);
put_iova_domain(&tegra->carveout.domain);
+ iova_cache_put();
+ iommu_domain_free(tegra->domain);
}
kfree(tegra);
@@ -313,46 +308,15 @@ static int host1x_reloc_copy_from_user(struct host1x_reloc *dest,
return 0;
}
-static int host1x_waitchk_copy_from_user(struct host1x_waitchk *dest,
- struct drm_tegra_waitchk __user *src,
- struct drm_file *file)
-{
- u32 cmdbuf;
- int err;
-
- err = get_user(cmdbuf, &src->handle);
- if (err < 0)
- return err;
-
- err = get_user(dest->offset, &src->offset);
- if (err < 0)
- return err;
-
- err = get_user(dest->syncpt_id, &src->syncpt);
- if (err < 0)
- return err;
-
- err = get_user(dest->thresh, &src->thresh);
- if (err < 0)
- return err;
-
- dest->bo = host1x_bo_lookup(file, cmdbuf);
- if (!dest->bo)
- return -ENOENT;
-
- return 0;
-}
-
int tegra_drm_submit(struct tegra_drm_context *context,
struct drm_tegra_submit *args, struct drm_device *drm,
struct drm_file *file)
{
+ struct host1x_client *client = &context->client->base;
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 *user_cmdbufs;
struct drm_tegra_reloc __user *user_relocs;
- struct drm_tegra_waitchk __user *user_waitchks;
struct drm_tegra_syncpt __user *user_syncpt;
struct drm_tegra_syncpt syncpt;
struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
@@ -364,7 +328,6 @@ int tegra_drm_submit(struct tegra_drm_context *context,
user_cmdbufs = u64_to_user_ptr(args->cmdbufs);
user_relocs = u64_to_user_ptr(args->relocs);
- user_waitchks = u64_to_user_ptr(args->waitchks);
user_syncpt = u64_to_user_ptr(args->syncpts);
/* We don't yet support other than one syncpt_incr struct per submit */
@@ -376,21 +339,20 @@ int tegra_drm_submit(struct tegra_drm_context *context,
return -EINVAL;
job = host1x_job_alloc(context->channel, args->num_cmdbufs,
- args->num_relocs, args->num_waitchks);
+ args->num_relocs);
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->client = client;
+ job->class = client->class;
job->serialize = true;
/*
* Track referenced BOs so that they can be unreferenced after the
* submission is complete.
*/
- num_refs = num_cmdbufs + num_relocs * 2 + num_waitchks;
+ num_refs = num_cmdbufs + num_relocs * 2;
refs = kmalloc_array(num_refs, sizeof(*refs), GFP_KERNEL);
if (!refs) {
@@ -451,13 +413,13 @@ int tegra_drm_submit(struct tegra_drm_context *context,
struct host1x_reloc *reloc;
struct tegra_bo *obj;
- err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs],
+ err = host1x_reloc_copy_from_user(&job->relocs[num_relocs],
&user_relocs[num_relocs], drm,
file);
if (err < 0)
goto fail;
- reloc = &job->relocarray[num_relocs];
+ reloc = &job->relocs[num_relocs];
obj = host1x_to_tegra_bo(reloc->cmdbuf.bo);
refs[num_refs++] = &obj->gem;
@@ -481,30 +443,6 @@ int tegra_drm_submit(struct tegra_drm_context *context,
}
}
- /* copy and resolve waitchks from submit */
- while (num_waitchks--) {
- struct host1x_waitchk *wait = &job->waitchk[num_waitchks];
- struct tegra_bo *obj;
-
- err = host1x_waitchk_copy_from_user(
- wait, &user_waitchks[num_waitchks], file);
- if (err < 0)
- goto fail;
-
- obj = host1x_to_tegra_bo(wait->bo);
- refs[num_refs++] = &obj->gem;
-
- /*
- * The unaligned offset will cause an unaligned write during
- * of the waitchks patching, corrupting the commands stream.
- */
- if (wait->offset & 3 ||
- wait->offset >= obj->gem.size) {
- err = -EINVAL;
- goto fail;
- }
- }
-
if (copy_from_user(&syncpt, user_syncpt, sizeof(syncpt))) {
err = -EFAULT;
goto fail;
@@ -1114,6 +1052,52 @@ int tegra_drm_unregister_client(struct tegra_drm *tegra,
return 0;
}
+struct iommu_group *host1x_client_iommu_attach(struct host1x_client *client,
+ bool shared)
+{
+ struct drm_device *drm = dev_get_drvdata(client->parent);
+ struct tegra_drm *tegra = drm->dev_private;
+ struct iommu_group *group = NULL;
+ int err;
+
+ if (tegra->domain) {
+ group = iommu_group_get(client->dev);
+ if (!group) {
+ dev_err(client->dev, "failed to get IOMMU group\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ if (!shared || (shared && (group != tegra->group))) {
+ err = iommu_attach_group(tegra->domain, group);
+ if (err < 0) {
+ iommu_group_put(group);
+ return ERR_PTR(err);
+ }
+
+ if (shared && !tegra->group)
+ tegra->group = group;
+ }
+ }
+
+ return group;
+}
+
+void host1x_client_iommu_detach(struct host1x_client *client,
+ struct iommu_group *group)
+{
+ struct drm_device *drm = dev_get_drvdata(client->parent);
+ struct tegra_drm *tegra = drm->dev_private;
+
+ if (group) {
+ if (group == tegra->group) {
+ iommu_detach_group(tegra->domain, group);
+ tegra->group = NULL;
+ }
+
+ iommu_group_put(group);
+ }
+}
+
void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *dma)
{
struct iova *alloc;
generated by cgit v1.2.3 (git 2.46.0) at 2025-11-04 01:53:35 +0000