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gpu: nvgpu: add fault injection for nvgpu_readl

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Add fault injection handling for nvgpu_readl() API.
Function return zero on fault injection.

Jira NVGPU-4453

Change-Id: If1b131811bde38e9a22f02e48f53726a03f51d08
Signed-off-by: vinodg <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2265045
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
vinodg
2019-12-18 13:03:17 -08:00
committed by Alex Waterman
parent 61014ee0f9
commit 363ecdf9be
3 changed files with 32 additions and 0 deletions
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13
drivers/gpu/nvgpu/include/nvgpu/posix/io.h
View File

@@ -123,4 +123,17 @@ void nvgpu_posix_io_record_access(struct gk20a *g,
bool nvgpu_posix_io_check_sequence(struct gk20a *g,
struct nvgpu_reg_access *sequence, u32 size, bool strict);
#ifdef NVGPU_UNITTEST_FAULT_INJECTION_ENABLEMENT
/**
* @brief Get fault injection structure.
*
* @param void.
*
* Returns the reference to nvgpu_readl fault injection structure.
*
* @return Pointer to nvgpu_readl fault injection structure.
*/
struct nvgpu_posix_fault_inj *nvgpu_readl_get_fault_injection(void);
#endif
#endif

1
drivers/gpu/nvgpu/libnvgpu-drv_safe.export
View File

@@ -601,6 +601,7 @@ nvgpu_rbtree_search
nvgpu_rbtree_unlink
nvgpu_readl
nvgpu_readl_impl
nvgpu_readl_get_fault_injection
nvgpu_request_firmware
nvgpu_runlist_cleanup_sw
nvgpu_runlist_construct_locked

18
drivers/gpu/nvgpu/os/posix/posix-io.c
View File

@@ -25,10 +25,21 @@
#include <nvgpu/bug.h>
#include <nvgpu/posix/io.h>
#include <nvgpu/posix/posix-fault-injection.h>
#include "os_posix.h"
#ifdef NVGPU_UNITTEST_FAULT_INJECTION_ENABLEMENT
struct nvgpu_posix_fault_inj *nvgpu_readl_get_fault_injection(void)
{
struct nvgpu_posix_fault_inj_container *c =
nvgpu_posix_fault_injection_get_container();
return &c->nvgpu_readl_fi;
}
#endif
/*
* This function sets the IO callbacks to the passed set of callbacks. It
* returns the value of the old IO callback struct pointer. This function
@@ -80,6 +91,13 @@ u32 nvgpu_readl(struct gk20a *g, u32 r)
.value = 0L
};
#ifdef NVGPU_UNITTEST_FAULT_INJECTION_ENABLEMENT
if (nvgpu_posix_fault_injection_handle_call(
nvgpu_readl_get_fault_injection()) == true) {
return 0;
}
#endif
if (callbacks == NULL || callbacks->readl == NULL) {
BUG();
}