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habanalabs: support DEVICE_UNUSABLE error indication from FW 

In case of multiple ECC errors, FW will set the DEVICE_UNUSABLE bit.
On boot-up, the driver will therefore fail inserting the device.

Signed-off-by: Koby Elbaz <kelbaz@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Koby Elbaz 2021-03-11 15:32:55 +02:00 committed by Oded Gabbay
parent ae382c22fc
commit 7d21114b03
2 changed files with 7 additions and 0 deletions
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3
drivers/misc/habanalabs/common/firmware_if.c
View File

@ -342,6 +342,9 @@ static int fw_read_errors(struct hl_device *hdev, u32 boot_err0_reg,
dev_err(hdev->dev, "Device boot error - eFuse failure\n"); dev_err(hdev->dev, "Device boot error - eFuse failure\n");
if (err_val & CPU_BOOT_ERR0_PLL_FAIL) if (err_val & CPU_BOOT_ERR0_PLL_FAIL)
dev_err(hdev->dev, "Device boot error - PLL failure\n"); dev_err(hdev->dev, "Device boot error - PLL failure\n");
if (err_val & CPU_BOOT_ERR0_DEVICE_UNUSABLE_FAIL)
dev_err(hdev->dev,
"Device boot error - device unusable failure\n");
security_val = RREG32(cpu_security_boot_status_reg); security_val = RREG32(cpu_security_boot_status_reg);
if (security_val & CPU_BOOT_DEV_STS0_ENABLED) if (security_val & CPU_BOOT_DEV_STS0_ENABLED)

4
drivers/misc/habanalabs/include/common/hl_boot_if.h
View File

@ -73,6 +73,9 @@
* CPU_BOOT_ERR0_PLL_FAIL PLL settings failed, meaning that one * CPU_BOOT_ERR0_PLL_FAIL PLL settings failed, meaning that one
* of the PLLs remains in REF_CLK * of the PLLs remains in REF_CLK
* *
* CPU_BOOT_ERR0_DEVICE_UNUSABLE_FAIL Device is unusable and customer support
* should be contacted.
*
* CPU_BOOT_ERR0_ENABLED Error registers enabled. * CPU_BOOT_ERR0_ENABLED Error registers enabled.
* This is a main indication that the * This is a main indication that the
* running FW populates the error * running FW populates the error
@ -92,6 +95,7 @@
#define CPU_BOOT_ERR0_PRI_IMG_VER_FAIL (1 << 10) #define CPU_BOOT_ERR0_PRI_IMG_VER_FAIL (1 << 10)
#define CPU_BOOT_ERR0_SEC_IMG_VER_FAIL (1 << 11) #define CPU_BOOT_ERR0_SEC_IMG_VER_FAIL (1 << 11)
#define CPU_BOOT_ERR0_PLL_FAIL (1 << 12) #define CPU_BOOT_ERR0_PLL_FAIL (1 << 12)
#define CPU_BOOT_ERR0_DEVICE_UNUSABLE_FAIL (1 << 13)
#define CPU_BOOT_ERR0_ENABLED (1 << 31) #define CPU_BOOT_ERR0_ENABLED (1 << 31)
/* /*