gpu: nvgpu: define error_notifiers in common code

All the linux specific error_notifier codes are defined in linux specific
header file <uapi/linux/nvgpu.h> and used in all the common driver

But since they are defined in linux specific file, we need to move all the
uses of those error_notifiers in linux specific code only

Hence define new error_notifiers in include/nvgpu/error_notifier.h and
use them in the common code

Add new API nvgpu_error_notifier_to_channel_notifier() to convert common
error_notifier of the form NVGPU_ERR_NOTIFIER_* to linux specific error
notifier of the form NVGPU_CHANNEL_*

Any future additions to error notifiers requires update to both the form
of error notifiers

Move all error notifier related metadata from channel_gk20a (common code)
to linux specific structure nvgpu_channel_linux
Update all accesses to this data from new structure instead of channel_gk20a

Move and rename below APIs to linux specific file and declare them
in error_notifier.h
nvgpu_set_error_notifier_locked()
nvgpu_set_error_notifier()
nvgpu_is_error_notifier_set()

Add below new API and use it in fifo_vgpu.c
nvgpu_set_error_notifier_if_empty()

Include <nvgpu/error_notifier.h> wherever new error_notifier codes are used

NVGPU-426

Change-Id: Iaa5bfc150e6e9ec17d797d445c2d6407afe9f4bd
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1593361
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index 8c9095b2..ff96d0d7 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -273,11 +273,6 @@ struct channel_gk20a {
         bool timeout_debug_dump;
         unsigned int timeslice_us;
 
-        struct dma_buf *error_notifier_ref;
-        struct nvgpu_notification *error_notifier;
-        void *error_notifier_va;
-        struct nvgpu_mutex error_notifier_mutex;
-
         struct nvgpu_mutex sync_lock;
         struct gk20a_channel_sync *sync;
 
@@ -335,8 +330,6 @@ bool gk20a_channel_update_and_check_timeout(struct channel_gk20a *ch,
 void gk20a_disable_channel(struct channel_gk20a *ch);
 void gk20a_channel_abort(struct channel_gk20a *ch, bool channel_preempt);
 void gk20a_channel_abort_clean_up(struct channel_gk20a *ch);
-void gk20a_set_error_notifier(struct channel_gk20a *ch, __u32 error);
-void gk20a_set_error_notifier_locked(struct channel_gk20a *ch, __u32 error);
 void gk20a_channel_semaphore_wakeup(struct gk20a *g, bool post_events);
 int gk20a_channel_alloc_priv_cmdbuf(struct channel_gk20a *c, u32 size,
                              struct priv_cmd_entry *entry);