gpu: nvgpu: Add ECC Support for GV11B in Linux

Implement nvgpu plumbing to allow reporting ECC errors(corrected
and uncorrected) to a L1SS service(if one exists).

This patch includes the following

1) Added code that submits ECC error reports via the Interrupt context
directly to a L1SS service in linux OS.

2) Added support for enabling/disabling the error reports via L1SS's
registration/deregistration API. Nvgpu simply invokes an empty function
until the registration is successful.

3) Added Spinlock to correctly handle concurrency for accessing the
correct Ops for submitting requests.

4) Adds error reporting for a subset of interrupts that can be verified
via external ECC injection logic. A subsequent patch will add the
API for rest of the interrupts.

5) In case of critical(uncorrected errors), change nvgpu's state to
quiesce state.

Jira L4T-1187
Bug 200700400

Change-Id: Id31f70531fba355e94e72c4f9762593e7667a11c
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2530411
Tested-by: Bibek Basu <bbasu@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/Kconfig b/drivers/gpu/nvgpu/Kconfig
index 7dba61a3..07331817 100644
--- a/drivers/gpu/nvgpu/Kconfig
+++ b/drivers/gpu/nvgpu/Kconfig
@@ -143,6 +143,13 @@ config NVGPU_SUPPORT_CDE
         help
           Enable support for extraction of comptags for CDE.
 
+config NVGPU_SUPPORT_LINUX_ECC_ERROR_REPORTING
+        bool "Support ECC error reporting for Linux"
+        depends on TEGRA_SAFETY
+        default y
+        help
+                Enable support for ECC error reporting for Linux.
+
 config NVGPU_USE_TEGRA_ALLOC_FD
         bool "Use tegra_alloc_fd() for allocating dma_buf fds for vidmem"
         depends on GK20A && GK20A_VIDMEM