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habanalabs/gaudi2: modify CS completion CQ to use virtual MSI-X doorbell

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Modify the CQ which is used for CS completion, to use the virtual MSI-X
doorbell.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Tomer Tayar 2022-06-30 18:40:59 +03:00 committed by Oded Gabbay
parent 25ad863839
commit bfbf5a0a71
1 changed files with 16 additions and 3 deletions
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19
drivers/misc/habanalabs/gaudi2/gaudi2.c
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@ -4254,7 +4254,7 @@ static void gaudi2_init_edma(struct hl_device *hdev)
static void gaudi2_init_sm(struct hl_device *hdev)
{
u64 msix_db_reg = CFG_BASE + mmPCIE_DBI_MSIX_DOORBELL_OFF;
struct gaudi2_device *gaudi2 = hdev->asic_specific;
u64 cq_address;
u32 reg_val;
int i;
@ -4272,8 +4272,21 @@ static void gaudi2_init_sm(struct hl_device *hdev)
/* Init CQ0 DB */
/* Configure the monitor to trigger MSI-X interrupt */
WREG32(mmDCORE0_SYNC_MNGR_GLBL_LBW_ADDR_L_0, lower_32_bits(msix_db_reg));
WREG32(mmDCORE0_SYNC_MNGR_GLBL_LBW_ADDR_H_0, upper_32_bits(msix_db_reg));
/* TODO:
* Remove the if statement when virtual MSI-X doorbell is supported in simulator (SW-93022)
* and in F/W (SW-93024).
*/
if (!hdev->pdev || hdev->asic_prop.fw_security_enabled) {
u64 msix_db_reg = CFG_BASE + mmPCIE_DBI_MSIX_DOORBELL_OFF;
WREG32(mmDCORE0_SYNC_MNGR_GLBL_LBW_ADDR_L_0, lower_32_bits(msix_db_reg));
WREG32(mmDCORE0_SYNC_MNGR_GLBL_LBW_ADDR_H_0, upper_32_bits(msix_db_reg));
} else {
WREG32(mmDCORE0_SYNC_MNGR_GLBL_LBW_ADDR_L_0,
lower_32_bits(gaudi2->virt_msix_db_dma_addr));
WREG32(mmDCORE0_SYNC_MNGR_GLBL_LBW_ADDR_H_0,
upper_32_bits(gaudi2->virt_msix_db_dma_addr));
}
WREG32(mmDCORE0_SYNC_MNGR_GLBL_LBW_DATA_0, GAUDI2_IRQ_NUM_COMPLETION);
for (i = 0 ; i < GAUDI2_RESERVED_CQ_NUMBER ; i++) {