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gpu: nvgpu: split the nvgpu_sgt unit from nvgpu_mem

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Split the nvgpu_sgt code out from the nvgpu_mem code. Although the
two chunks of code are related the SGT code is distinct and as
such should be its own unit. To do this a new source file has been
added - nvgpu_sgt.c - which contains all the nvgpu_sgt common APIs.
These are the facade APIs to abstract the actual details of how any
given nvgpu_sgt is actually implemented.

An abstract unit - nvgpu_sgt_os - was also defined. This unit
exists solely for the nvgpu_sgt unit to call so that the OS
specific nvgpu_sgt_os_create_from_mem() API can be moved from the
common nvgpu_sgt unit. Note this also updates the name of what the
OS specific units are expected to call. Common code may still use
the generic nvgpu_sgt_create_from_mem() API.

JIRA NVGPU-1391

Change-Id: I37f5b2bbf9f84c0fb6bc296c3e04ea13518bd4d0
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1946012
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Alex Waterman
2018-11-07 15:52:07 -08:00
committed by mobile promotions
parent 1195239d1c
commit c49e9e4bcd
18 changed files with 352 additions and 210 deletions
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5
drivers/gpu/nvgpu/os/linux/nvgpu_mem.c
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@@ -25,6 +25,7 @@
#include <nvgpu/vidmem.h>
#include <nvgpu/gk20a.h>
#include <nvgpu/string.h>
#include <nvgpu/nvgpu_sgt_os.h>
#include <nvgpu/linux/dma.h>
@@ -367,8 +368,8 @@ struct nvgpu_sgt *nvgpu_linux_sgt_create(struct gk20a *g, struct sg_table *sgt)
return nvgpu_sgt;
}
struct nvgpu_sgt *nvgpu_sgt_create_from_mem(struct gk20a *g,
struct nvgpu_mem *mem)
struct nvgpu_sgt *nvgpu_sgt_os_create_from_mem(struct gk20a *g,
struct nvgpu_mem *mem)
{
return nvgpu_linux_sgt_create(g, mem->priv.sgt);
}