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habanalabs: make tpc registers secured

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

Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Dalit Ben Zoor 2019-05-30 08:46:01 +00:00 committed by Oded Gabbay
parent cbb10f1e4a
commit a513f9a7ec
1 changed files with 16 additions and 0 deletions
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16
drivers/misc/habanalabs/goya/goya_security.c
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@ -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);