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habanalabs: restore unsecured registers default values

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unsecured registers can be changed by the user, and hence should be
restored to their default values in context switch

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 08:46:02 +00:00 committed by Oded Gabbay
parent 9c46f7b10f
commit 5c823ae188
1 changed files with 16 additions and 3 deletions
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19
drivers/misc/habanalabs/goya/goya.c
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@ -786,7 +786,6 @@ static void goya_init_dma_ch(struct hl_device *hdev, int dma_id)
else
sob_addr = CFG_BASE + mmSYNC_MNGR_SOB_OBJ_1007;
WREG32(mmDMA_CH_0_WR_COMP_ADDR_LO + reg_off, lower_32_bits(sob_addr));
WREG32(mmDMA_CH_0_WR_COMP_ADDR_HI + reg_off, upper_32_bits(sob_addr));
WREG32(mmDMA_CH_0_WR_COMP_WDATA + reg_off, 0x80000001);
}
@ -4560,10 +4559,12 @@ static int goya_memset_device_memory(struct hl_device *hdev, u64 addr, u64 size,
int goya_context_switch(struct hl_device *hdev, u32 asid)
{
struct asic_fixed_properties *prop = &hdev->asic_prop;
u64 addr = prop->sram_base_address;
u64 addr = prop->sram_base_address, sob_addr;
u32 size = hdev->pldm ? 0x10000 : prop->sram_size;
u64 val = 0x7777777777777777ull;
int rc;
int rc, dma_id;
u32 channel_off = mmDMA_CH_1_WR_COMP_ADDR_LO -
mmDMA_CH_0_WR_COMP_ADDR_LO;
rc = goya_memset_device_memory(hdev, addr, size, val, false);
if (rc) {
@ -4571,7 +4572,19 @@ int goya_context_switch(struct hl_device *hdev, u32 asid)
return rc;
}
/* we need to reset registers that the user is allowed to change */
sob_addr = CFG_BASE + mmSYNC_MNGR_SOB_OBJ_1007;
WREG32(mmDMA_CH_0_WR_COMP_ADDR_LO, lower_32_bits(sob_addr));
for (dma_id = 1 ; dma_id < NUMBER_OF_EXT_HW_QUEUES ; dma_id++) {
sob_addr = CFG_BASE + mmSYNC_MNGR_SOB_OBJ_1000 +
(dma_id - 1) * 4;
WREG32(mmDMA_CH_0_WR_COMP_ADDR_LO + channel_off * dma_id,
lower_32_bits(sob_addr));
}
WREG32(mmTPC_PLL_CLK_RLX_0, 0x200020);
goya_mmu_prepare(hdev, asid);
goya_clear_sm_regs(hdev);