diff options
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.c | 160 | ||||
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.h | 2 |
2 files changed, 114 insertions, 48 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 90041d5388d1..948b529d4097 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -8,6 +8,7 @@ */ #include <linux/host1x.h> +#include <linux/idr.h> #include <linux/iommu.h> #include <drm/drm_atomic.h> @@ -24,7 +25,8 @@ #define DRIVER_PATCHLEVEL 0 struct tegra_drm_file { - struct list_head contexts; + struct idr contexts; + struct mutex lock; }; static void tegra_atomic_schedule(struct tegra_drm *tegra, @@ -248,7 +250,8 @@ static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) if (!fpriv) return -ENOMEM; - INIT_LIST_HEAD(&fpriv->contexts); + idr_init(&fpriv->contexts); + mutex_init(&fpriv->lock); filp->driver_priv = fpriv; return 0; @@ -427,21 +430,16 @@ fail: #ifdef CONFIG_DRM_TEGRA_STAGING -static struct tegra_drm_context *tegra_drm_get_context(__u64 context) +static struct tegra_drm_context * +tegra_drm_file_get_context(struct tegra_drm_file *file, u32 id) { - return (struct tegra_drm_context *)(uintptr_t)context; -} - -static bool tegra_drm_file_owns_context(struct tegra_drm_file *file, - struct tegra_drm_context *context) -{ - struct tegra_drm_context *ctx; + struct tegra_drm_context *context; - list_for_each_entry(ctx, &file->contexts, list) - if (ctx == context) - return true; + mutex_lock(&file->lock); + context = idr_find(&file->contexts, id); + mutex_unlock(&file->lock); - return false; + return context; } static int tegra_gem_create(struct drm_device *drm, void *data, @@ -522,6 +520,28 @@ static int tegra_syncpt_wait(struct drm_device *drm, void *data, &args->value); } +static int tegra_client_open(struct tegra_drm_file *fpriv, + struct tegra_drm_client *client, + struct tegra_drm_context *context) +{ + int err; + + err = client->ops->open_channel(client, context); + if (err < 0) + return err; + + err = idr_alloc(&fpriv->contexts, context, 0, 0, GFP_KERNEL); + if (err < 0) { + client->ops->close_channel(context); + return err; + } + + context->client = client; + context->id = err; + + return 0; +} + static int tegra_open_channel(struct drm_device *drm, void *data, struct drm_file *file) { @@ -536,19 +556,22 @@ static int tegra_open_channel(struct drm_device *drm, void *data, if (!context) return -ENOMEM; + mutex_lock(&fpriv->lock); + list_for_each_entry(client, &tegra->clients, list) if (client->base.class == args->client) { - err = client->ops->open_channel(client, context); - if (err) + err = tegra_client_open(fpriv, client, context); + if (err < 0) break; - list_add(&context->list, &fpriv->contexts); - args->context = (uintptr_t)context; - context->client = client; - return 0; + args->context = context->id; + break; } - kfree(context); + if (err < 0) + kfree(context); + + mutex_unlock(&fpriv->lock); return err; } @@ -558,16 +581,22 @@ static int tegra_close_channel(struct drm_device *drm, void *data, struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_close_channel *args = data; struct tegra_drm_context *context; + int err = 0; - context = tegra_drm_get_context(args->context); + mutex_lock(&fpriv->lock); - if (!tegra_drm_file_owns_context(fpriv, context)) - return -EINVAL; + context = tegra_drm_file_get_context(fpriv, args->context); + if (!context) { + err = -EINVAL; + goto unlock; + } - list_del(&context->list); + idr_remove(&fpriv->contexts, context->id); tegra_drm_context_free(context); - return 0; +unlock: + mutex_unlock(&fpriv->lock); + return err; } static int tegra_get_syncpt(struct drm_device *drm, void *data, @@ -577,19 +606,27 @@ static int tegra_get_syncpt(struct drm_device *drm, void *data, struct drm_tegra_get_syncpt *args = data; struct tegra_drm_context *context; struct host1x_syncpt *syncpt; + int err = 0; - context = tegra_drm_get_context(args->context); + mutex_lock(&fpriv->lock); - if (!tegra_drm_file_owns_context(fpriv, context)) - return -ENODEV; + context = tegra_drm_file_get_context(fpriv, args->context); + if (!context) { + err = -ENODEV; + goto unlock; + } - if (args->index >= context->client->base.num_syncpts) - return -EINVAL; + if (args->index >= context->client->base.num_syncpts) { + err = -EINVAL; + goto unlock; + } syncpt = context->client->base.syncpts[args->index]; args->id = host1x_syncpt_id(syncpt); - return 0; +unlock: + mutex_unlock(&fpriv->lock); + return err; } static int tegra_submit(struct drm_device *drm, void *data, @@ -598,13 +635,21 @@ static int tegra_submit(struct drm_device *drm, void *data, struct tegra_drm_file *fpriv = file->driver_priv; struct drm_tegra_submit *args = data; struct tegra_drm_context *context; + int err; - context = tegra_drm_get_context(args->context); + mutex_lock(&fpriv->lock); - if (!tegra_drm_file_owns_context(fpriv, context)) - return -ENODEV; + context = tegra_drm_file_get_context(fpriv, args->context); + if (!context) { + err = -ENODEV; + goto unlock; + } + + err = context->client->ops->submit(context, args, drm, file); - return context->client->ops->submit(context, args, drm, file); +unlock: + mutex_unlock(&fpriv->lock); + return err; } static int tegra_get_syncpt_base(struct drm_device *drm, void *data, @@ -615,24 +660,34 @@ static int tegra_get_syncpt_base(struct drm_device *drm, void *data, struct tegra_drm_context *context; struct host1x_syncpt_base *base; struct host1x_syncpt *syncpt; + int err = 0; - context = tegra_drm_get_context(args->context); + mutex_lock(&fpriv->lock); - if (!tegra_drm_file_owns_context(fpriv, context)) - return -ENODEV; + context = tegra_drm_file_get_context(fpriv, args->context); + if (!context) { + err = -ENODEV; + goto unlock; + } - if (args->syncpt >= context->client->base.num_syncpts) - return -EINVAL; + if (args->syncpt >= context->client->base.num_syncpts) { + err = -EINVAL; + goto unlock; + } syncpt = context->client->base.syncpts[args->syncpt]; base = host1x_syncpt_get_base(syncpt); - if (!base) - return -ENXIO; + if (!base) { + err = -ENXIO; + goto unlock; + } args->id = host1x_syncpt_base_id(base); - return 0; +unlock: + mutex_unlock(&fpriv->lock); + return err; } static int tegra_gem_set_tiling(struct drm_device *drm, void *data, @@ -841,14 +896,25 @@ static void tegra_drm_disable_vblank(struct drm_device *drm, unsigned int pipe) tegra_dc_disable_vblank(dc); } +static int tegra_drm_context_cleanup(int id, void *p, void *data) +{ + struct tegra_drm_context *context = p; + + tegra_drm_context_free(context); + + return 0; +} + static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file) { struct tegra_drm_file *fpriv = file->driver_priv; - struct tegra_drm_context *context, *tmp; - list_for_each_entry_safe(context, tmp, &fpriv->contexts, list) - tegra_drm_context_free(context); + mutex_lock(&fpriv->lock); + idr_for_each(&fpriv->contexts, tegra_drm_context_cleanup, NULL); + mutex_unlock(&fpriv->lock); + idr_destroy(&fpriv->contexts); + mutex_destroy(&fpriv->lock); kfree(fpriv); } diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index d168beaf13ef..368dde1bed18 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -68,7 +68,7 @@ struct tegra_drm_client; struct tegra_drm_context { struct tegra_drm_client *client; struct host1x_channel *channel; - struct list_head list; + unsigned int id; }; struct tegra_drm_client_ops { |