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Commit 2124c5b2 authored by Ching Huang's avatar Ching Huang Committed by Martin K. Petersen
Browse files

scsi: arcmsr: Fix clear doorbell queue on ACB_ADAPTER_TYPE_B 



Fix clear doorbell queue on ACB_ADAPTER_TYPE_B controller.

Signed-off-by: default avatarChing Huang <ching2048@areca.com.tw>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent b416c099

drivers/scsi/arcmsr/arcmsr_hba.c

+11 −2
Original line number Diff line number Diff line
@@ -4196,10 +4196,19 @@ static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb) 


	case ACB_ADAPTER_TYPE_B: {

		struct MessageUnit_B *reg = acb->pmuB;

		/*clear interrupt and message state*/

		writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);

		uint32_t outbound_doorbell, i;

		writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);

		writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);

		/* let IOP know data has been read */

		for(i=0; i < 200; i++) {

			msleep(20);

			outbound_doorbell = readl(reg->iop2drv_doorbell);

			if( outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK) {

				writel(ARCMSR_DOORBELL_INT_CLEAR_PATTERN, reg->iop2drv_doorbell);

				writel(ARCMSR_DRV2IOP_DATA_READ_OK, reg->drv2iop_doorbell);

			} else

				break;

		}

		}

		break;

	case ACB_ADAPTER_TYPE_C: {