habanalabs: make tpc registers secured

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>

diff --git a/drivers/misc/habanalabs/goya/goya_security.c b/drivers/misc/habanalabs/goya/goya_security.c
index d95d1b2..d6ec12b 100644 (file)
--- a/drivers/misc/habanalabs/goya/goya_security.c
+++ b/drivers/misc/habanalabs/goya/goya_security.c
@@ -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);