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Commit a513f9a7 authored by Dalit Ben Zoor's avatar Dalit Ben Zoor Committed by Oded Gabbay
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habanalabs: make tpc registers secured 



Set protection bits for some tpc registers that should to be
secured.

Signed-off-by: default avatarDalit Ben Zoor <dbenzoor@habana.ai>
Reviewed-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
parent cbb10f1e

drivers/misc/habanalabs/goya/goya_security.c

+16 −0
Original line number Diff line number Diff line
@@ -677,6 +677,17 @@ static void goya_init_tpc_protection_bits(struct hl_device *hdev) 
	goya_pb_set_block(hdev, mmTPC0_RD_REGULATOR_BASE);

	goya_pb_set_block(hdev, mmTPC0_WR_REGULATOR_BASE);



	pb_addr = (mmTPC0_CFG_SEMAPHORE & ~0xFFF) + PROT_BITS_OFFS;

	word_offset = ((mmTPC0_CFG_SEMAPHORE & PROT_BITS_OFFS) >> 7) << 2;



	mask = 1 << ((mmTPC0_CFG_SEMAPHORE & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_VFLAGS & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_SFLAGS & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_LFSR_POLYNOM & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_STATUS & 0x7F) >> 2);



	WREG32(pb_addr + word_offset, ~mask);



	pb_addr = (mmTPC0_CFG_CFG_BASE_ADDRESS_HIGH & ~0xFFF) + PROT_BITS_OFFS;

	word_offset = ((mmTPC0_CFG_CFG_BASE_ADDRESS_HIGH &

			PROT_BITS_OFFS) >> 7) << 2;
@@ -684,6 +695,11 @@ static void goya_init_tpc_protection_bits(struct hl_device *hdev) 
	mask |= 1 << ((mmTPC0_CFG_CFG_SUBTRACT_VALUE & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_SM_BASE_ADDRESS_LOW & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_SM_BASE_ADDRESS_HIGH & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_CFG_SUBTRACT_VALUE & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_TPC_STALL & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_MSS_CONFIG & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_TPC_INTR_CAUSE & 0x7F) >> 2);

	mask |= 1 << ((mmTPC0_CFG_TPC_INTR_MASK & 0x7F) >> 2);



	WREG32(pb_addr + word_offset, ~mask);