Commit 70852c95 authored by Dafna Hirschfeld's avatar Dafna Hirschfeld Committed by Oded Gabbay
Browse files

habanalabs/gaudi: use memory_scrub_val from debugfs 



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

Signed-off-by: default avatarDafna Hirschfeld <dhirschfeld@habana.ai>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent 8c834a14

Documentation/ABI/testing/debugfs-driver-habanalabs

+2 −1
Original line number Diff line number Diff line
@@ -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

drivers/misc/habanalabs/gaudi/gaudi.c

+2 −3
Original line number Diff line number Diff line
@@ -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;