gpu: nvgpu: move submit path to linux

Nvgpu submit path has a lot of dependency on Linux framework
e.g. use of copy_from_user, use of structures defined in uapi/nvgpu headers,
dma_buf_* calls for trace support etc

Hence to keep common code independent of Linux code, move submit path to
Linux directory

Move below APIs to common/linux/channel.c
trace_write_pushbuffer()
trace_write_pushbuffer_range()
gk20a_submit_prepare_syncs()
gk20a_submit_append_priv_cmdbuf()
gk20a_submit_append_gpfifo()
gk20a_submit_channel_gpfifo()

Move below APIs to common/linux/ce2.c
gk20a_ce_execute_ops()

Define gk20a_ce_execute_ops() in common/linux/ce2.c, and declare it in
gk20a/ce2_gk20a.h since it is needed in common/mm code too
Each OS needs to implement this API separately

gk20a_channel_alloc_gpfifo() use sizeof(nvgpu_gpfifo) to get size of one gpfifo
entry, but structure nvgpu_gpfifo is linux specific
Define new nvgpu_get_gpfifo_entry_size() in linux specific code and use it
in gk20a_channel_alloc_gpfifo() to get gpfifo entry size
Each OS needs to implement this API separately

Export some APIs from gk20a/ce2_gk20a.h and gk20a/channel_gk20a.h that are
needed in linux code

Jira NVGPU-259
Jira NVGPU-313

Change-Id: I360c6cb8ce4494b1e50c66af334a2a379f0d2dc4
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1586277
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/ce2_gk20a.h b/drivers/gpu/nvgpu/gk20a/ce2_gk20a.h
index 1dad8952..8d3a4ca3 100644
--- a/drivers/gpu/nvgpu/gk20a/ce2_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/ce2_gk20a.h
@@ -161,5 +161,15 @@ void gk20a_ce_delete_context_priv(struct gk20a *g,
                 u32 ce_ctx_id);
 void gk20a_ce_delete_context(struct gk20a *g,
                 u32 ce_ctx_id);
+int gk20a_ce_prepare_submit(u64 src_buf,
+                u64 dst_buf,
+                u64 size,
+                u32 *cmd_buf_cpu_va,
+                u32 max_cmd_buf_size,
+                unsigned int payload,
+                int launch_flags,
+                int request_operation,
+                u32 dma_copy_class,
+                struct gk20a_fence *gk20a_fence_in);
 
 #endif /*__CE2_GK20A_H__*/