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habanalabs/gaudi: use memory_scrub_val from debugfs

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In the callback scrub_device_mem, use 'memory_scrub_val'
from debugfs for the scrubbing value.

Signed-off-by: Dafna Hirschfeld <dhirschfeld@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Dafna Hirschfeld 2022-06-23 07:47:48 +03:00 committed by Oded Gabbay
parent 8c834a1442
commit 70852c95ac
2 changed files with 4 additions and 4 deletions
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3
Documentation/ABI/testing/debugfs-driver-habanalabs
View file

@ -182,7 +182,8 @@ Date: May 2022
KernelVersion: 5.19
Contact: dhirschfeld@habana.ai
Description: The value to which the dram will be set to when the user
scrubs the dram using 'memory_scrub' debugfs file
scrubs the dram using 'memory_scrub' debugfs file and
the scrubbing value when using module param 'memory_scrub'
What: /sys/kernel/debug/habanalabs/hl<n>/mmu
Date: Jan 2019

5
drivers/misc/habanalabs/gaudi/gaudi.c
View file

@ -4851,7 +4851,7 @@ static int gaudi_scrub_device_mem(struct hl_device *hdev)
struct asic_fixed_properties *prop = &hdev->asic_prop;
u64 addr, size, dummy_val;
int rc = 0;
u64 val = 0;
u64 val = hdev->memory_scrub_val;
if (!hdev->memory_scrub)
return 0;
@ -4871,7 +4871,6 @@ static int gaudi_scrub_device_mem(struct hl_device *hdev)
/* Scrub SRAM */
addr = prop->sram_user_base_address;
size = hdev->pldm ? 0x10000 : prop->sram_size - SRAM_USER_BASE_OFFSET;
val = 0x7777777777777777ull;
dev_dbg(hdev->dev, "Scrubing SRAM: 0x%09llx - 0x%09llx val: 0x%llx\n",
addr, addr + size, val);
@ -4882,7 +4881,7 @@ static int gaudi_scrub_device_mem(struct hl_device *hdev)
}
/* Scrub HBM using all DMA channels in parallel */
rc = gaudi_scrub_device_dram(hdev, 0xdeadbeaf);
rc = gaudi_scrub_device_dram(hdev, val);
if (rc) {
dev_err(hdev->dev, "Failed to clear HBM (%d)\n", rc);
return rc;