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habanalabs/gaudi2: add gaudi2 security module

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Use the generic security module to block all registers in the ASIC and
then open only those that are needed to be accessed by the user.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Ofir Bitton 2022-06-26 21:30:25 +03:00 committed by Oded Gabbay
parent e392d1bd04
commit 4567214686
4 changed files with 3867 additions and 2 deletions
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2
drivers/misc/habanalabs/gaudi2/Makefile
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@ -1,3 +1,3 @@
# SPDX-License-Identifier: GPL-2.0-only
HL_GAUDI2_FILES := gaudi2/gaudi2.o
HL_GAUDI2_FILES := gaudi2/gaudi2.o gaudi2/gaudi2_security.o \

16
drivers/misc/habanalabs/gaudi2/gaudi2.c
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@ -2696,6 +2696,7 @@ static int gaudi2_late_init(struct hl_device *hdev)
gaudi2_init_arcs(hdev);
gaudi2_scrub_arcs_dccm(hdev);
gaudi2_init_security(hdev);
return 0;
@ -5176,6 +5177,17 @@ static void gaudi2_execute_soft_reset(struct hl_device *hdev, u32 reset_sleep_ms
return;
}
/* Block access to engines, QMANs and SM during reset, these
* RRs will be reconfigured after soft reset.
* PCIE_MSIX is left unsecured to allow NIC packets processing during the reset.
*/
gaudi2_write_rr_to_all_lbw_rtrs(hdev, RR_TYPE_LONG, NUM_LONG_LBW_RR - 1,
mmDCORE0_TPC0_QM_DCCM_BASE, mmPCIE_MSIX_BASE);
gaudi2_write_rr_to_all_lbw_rtrs(hdev, RR_TYPE_LONG, NUM_LONG_LBW_RR - 2,
mmPCIE_MSIX_BASE + HL_BLOCK_SIZE,
mmPCIE_VDEC1_MSTR_IF_RR_SHRD_HBW_BASE + HL_BLOCK_SIZE);
WREG32(mmPSOC_RESET_CONF_SOFT_RST, 1);
}
@ -5954,6 +5966,7 @@ static int gaudi2_non_hard_reset_late_init(struct hl_device *hdev)
*/
gaudi2_init_arcs(hdev);
gaudi2_scrub_arcs_dccm(hdev);
gaudi2_init_security(hdev);
/* Unmask all IRQs since some could have been received during the soft reset */
irq_arr_size = gaudi2->num_of_valid_hw_events * sizeof(gaudi2->hw_events[0]);
@ -9727,12 +9740,13 @@ static const struct hl_asic_funcs gaudi2_funcs = {
.reset_sob = gaudi2_reset_sob,
.reset_sob_group = gaudi2_reset_sob_group,
.get_device_time = gaudi2_get_device_time,
.pb_print_security_errors = NULL,
.pb_print_security_errors = gaudi2_pb_print_security_errors,
.collective_wait_init_cs = gaudi2_collective_wait_init_cs,
.collective_wait_create_jobs = gaudi2_collective_wait_create_jobs,
.get_dec_base_addr = gaudi2_get_dec_base_addr,
.scramble_addr = gaudi2_mmu_scramble_addr,
.descramble_addr = gaudi2_mmu_descramble_addr,
.ack_protection_bits_errors = gaudi2_ack_protection_bits_errors,
.get_hw_block_id = gaudi2_get_hw_block_id,
.hw_block_mmap = gaudi2_block_mmap,
.enable_events_from_fw = gaudi2_enable_events_from_fw,

2
drivers/misc/habanalabs/gaudi2/gaudi2P.h
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@ -530,5 +530,7 @@ void gaudi2_write_rr_to_all_lbw_rtrs(struct hl_device *hdev, u8 rr_type, u32 rr_
u64 max_val);
void gaudi2_pb_print_security_errors(struct hl_device *hdev, u32 block_addr, u32 cause,
u32 offended_addr);
int gaudi2_init_security(struct hl_device *hdev);
void gaudi2_ack_protection_bits_errors(struct hl_device *hdev);
#endif /* GAUDI2P_H_ */

3849
drivers/misc/habanalabs/gaudi2/gaudi2_security.c Normal file
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