diff options
| author | Ofir Bitton <obitton@habana.ai> | 2021-07-27 10:54:22 +0300 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2021-09-01 18:38:24 +0300 |
| commit | f5137aff6dcc3a85d0143ee91e6061c2c3611bf7 (patch) | |
| tree | b3a5c0afafd3c8acfee733b18f3fa49889f67f0b /drivers/misc | |
| parent | a6c849012b0f51c674f52384bd9a4f3dc0a33c31 (diff) | |
| download | linux-f5137aff6dcc3a85d0143ee91e6061c2c3611bf7.tar.xz | |
habanalabs/gaudi: scrub HBM to a specific value
In order to enhance debuggability, we will scrub the whole HBM to
a specific value, in case HBM scrubbing is enabled. Scrubbing will be
performed after reset and after user closes the FD.
Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/gaudi/gaudi.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c index 88e181521d90..55b133e34ac4 100644 --- a/drivers/misc/habanalabs/gaudi/gaudi.c +++ b/drivers/misc/habanalabs/gaudi/gaudi.c @@ -4193,6 +4193,11 @@ static int gaudi_hw_init(struct hl_device *hdev) goto disable_msi; } + /* Scrub both SRAM and DRAM */ + rc = hdev->asic_funcs->scrub_device_mem(hdev, 0, 0); + if (rc) + return rc; + /* Perform read from the device to flush all configuration */ RREG32(mmHW_STATE); @@ -4757,8 +4762,8 @@ static int gaudi_hbm_scrubbing(struct hl_device *hdev) "Doing HBM scrubbing for 0x%09llx - 0x%09llx\n", cur_addr, cur_addr + chunk_size); - WREG32(mmDMA0_CORE_SRC_BASE_LO + dma_offset, 0); - WREG32(mmDMA0_CORE_SRC_BASE_HI + dma_offset, 0); + WREG32(mmDMA0_CORE_SRC_BASE_LO + dma_offset, 0xdeadbeaf); + WREG32(mmDMA0_CORE_SRC_BASE_HI + dma_offset, 0xdeadbeaf); WREG32(mmDMA0_CORE_DST_BASE_LO + dma_offset, lower_32_bits(cur_addr)); WREG32(mmDMA0_CORE_DST_BASE_HI + dma_offset, |