gpu: nvgpu: use submit callback only in linux code

Move the implementation for channel job update callbacks that is based
on Linux specific work_struct usage to Linux-specific code.

This requires a bit of extra work for allocating OS-specific priv data
for channels which is also done in this patch. The priv data will be
used more when more OS-specific features are moved.

Jira NVGPU-259

Change-Id: I24bc0148a827f375b56a1c96044685affc2d1e8c
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1589321
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/channel.h b/drivers/gpu/nvgpu/common/linux/channel.h
index 785c03d6..ba1935f3 100644
--- a/drivers/gpu/nvgpu/common/linux/channel.h
+++ b/drivers/gpu/nvgpu/common/linux/channel.h
@@ -16,6 +16,8 @@
 #ifndef __NVGPU_CHANNEL_H__
 #define __NVGPU_CHANNEL_H__
 
+#include <linux/workqueue.h>
+
 #include <nvgpu/types.h>
 
 struct channel_gk20a;
@@ -24,6 +26,36 @@ struct nvgpu_submit_gpfifo_args;
 struct nvgpu_fence;
 struct gk20a_fence;
 struct fifo_profile_gk20a;
+struct nvgpu_os_linux;
+
+struct nvgpu_channel_completion_cb {
+        /*
+         * Signal channel owner via a callback, if set, in job cleanup with
+         * schedule_work. Means that something finished on the channel (perhaps
+         * more than one job).
+         */
+        void (*fn)(struct channel_gk20a *, void *);
+        void *user_data;
+        /* Make access to the two above atomic */
+        struct nvgpu_spinlock lock;
+        /* Per-channel async work task, cannot reschedule itself */
+        struct work_struct work;
+};
+
+struct nvgpu_channel_linux {
+        struct channel_gk20a *ch;
+
+        struct nvgpu_channel_completion_cb completion_cb;
+};
+
+int nvgpu_init_channel_support_linux(struct nvgpu_os_linux *l);
+void nvgpu_remove_channel_support_linux(struct nvgpu_os_linux *l);
+
+struct channel_gk20a *gk20a_open_new_channel_with_cb(struct gk20a *g,
+                void (*update_fn)(struct channel_gk20a *, void *),
+                void *update_fn_data,
+                int runlist_id,
+                bool is_privileged_channel);
 
 int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
                                 struct nvgpu_gpfifo *gpfifo,