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gpu: nvgpu: Add check for invalid nvgpu_aperture

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Currently, in nvgpu_aperture_mask_raw function, if NVGPU_MM_HONORS_APERTURE
flag is disabled, invalid or junk aperture input is changed to APERTURE_VIDMEM
instead of raising a warning.To resolve this bug, need to check if input
aperture is APERTURE_INVALID or undefined.

This patch adds APERTURE_MAX_ENUM to nvgpu_aperture structure which
gives upperbound of nvgpu_aperture types. This patch also adds condition in
nvgpu_aperture_mask_raw function to check for invalid or undefined aperture
input. For invalid inputs, function will BUG().

Jira NVGPU-2933

Change-Id: Ic9d260250e3083d693f025c6e32657f6a863aafb
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2034281
Reviewed-by: Philip Elcan <pelcan@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Vedashree Vidwans
2019-03-06 15:19:38 -08:00
committed by mobile promotions
parent 0931d699a5
commit bc2ee54301
2 changed files with 12 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/nvgpu/common/mm/nvgpu_mem.c
View File

@@ -38,6 +38,10 @@ u32 nvgpu_aperture_mask_raw(struct gk20a *g, enum nvgpu_aperture aperture,
u32 sysmem_mask, u32 sysmem_coh_mask,
u32 vidmem_mask)
{
if ((aperture == APERTURE_INVALID) || (aperture >= APERTURE_MAX_ENUM)) {
nvgpu_do_assert_print(g, "Bad aperture");
return 0;
}
/*
* Some iGPUs treat sysmem (i.e SoC DRAM) as vidmem. In these cases the
* "sysmem" aperture should really be translated to VIDMEM.
@@ -54,9 +58,11 @@ u32 nvgpu_aperture_mask_raw(struct gk20a *g, enum nvgpu_aperture aperture,
case APERTURE_VIDMEM:
return vidmem_mask;
case APERTURE_INVALID:
case APERTURE_MAX_ENUM:
default:
nvgpu_do_assert_print(g, "Bad aperture");
}
return 0;
}
}
u32 nvgpu_aperture_mask(struct gk20a *g, struct nvgpu_mem *mem,

6
drivers/gpu/nvgpu/include/nvgpu/nvgpu_mem.h
View File

@@ -58,7 +58,9 @@ enum nvgpu_aperture {
/* Don't use directly. Use APERTURE_SYSMEM, this is used internally. */
APERTURE_SYSMEM_COH,
APERTURE_VIDMEM
APERTURE_VIDMEM,
/* This should always be last in the list */
APERTURE_MAX_ENUM
};
struct nvgpu_mem {
@@ -157,6 +159,8 @@ static inline const char *nvgpu_aperture_str(struct gk20a *g,
return "SYSCOH";
case APERTURE_VIDMEM:
return "VIDMEM";
case APERTURE_MAX_ENUM:
return "UNKNOWN";
};
return "UNKNOWN";
}