Commit bfbf5a0a authored by Tomer Tayar's avatar Tomer Tayar Committed by Oded Gabbay
Browse files

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



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

Signed-off-by: default avatarTomer Tayar <ttayar@habana.ai>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent 25ad8638

drivers/misc/habanalabs/gaudi2/gaudi2.c

+16 −3
Original line number Diff line number Diff line
@@ -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 */

	/* 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++) {