Commit ff6e88f1 authored by Varun Prakash's avatar Varun Prakash Committed by Martin K. Petersen
Browse files

scsi: csiostor: enable PCIe relaxed ordering if supported 



Set PCIe relaxed ordering bits in FW_IQ_CMD if relaxed ordering is
enabled in the PCIe device.

Signed-off-by: default avatarVarun Prakash <varun@chelsio.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 7c82532d

drivers/scsi/csiostor/csio_hw.h

+3 −0
Original line number Diff line number Diff line
@@ -368,6 +368,9 @@ struct csio_hw_stats { 
#define	CSIO_HWF_HOST_INTR_ENABLED	0x00000200	/* Are host interrupts

							 * enabled?

							 */

#define CSIO_HWF_ROOT_NO_RELAXED_ORDERING 0x00000400	/* Is PCIe relaxed

							 * ordering enabled

							 */



#define csio_is_hw_intr_enabled(__hw)	\

				((__hw)->flags & CSIO_HWF_HW_INTR_ENABLED)

drivers/scsi/csiostor/csio_init.c

+3 −0
Original line number Diff line number Diff line
@@ -968,6 +968,9 @@ static int csio_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 
		goto err_pci_exit;

	}



	if (!pcie_relaxed_ordering_enabled(pdev))

		hw->flags |= CSIO_HWF_ROOT_NO_RELAXED_ORDERING;



	pci_set_drvdata(pdev, hw);



	rv = csio_hw_start(hw);

drivers/scsi/csiostor/csio_mb.c

+3 −0
Original line number Diff line number Diff line
@@ -491,6 +491,7 @@ csio_mb_iq_write(struct csio_hw *hw, struct csio_mb *mbp, void *priv, 
	uint32_t iq_start_stop = (iq_params->iq_start)	?

					FW_IQ_CMD_IQSTART_F :

					FW_IQ_CMD_IQSTOP_F;

	int relaxed = !(hw->flags & CSIO_HWF_ROOT_NO_RELAXED_ORDERING);



	/*

	 * If this IQ write is cascaded with IQ alloc request, do not
@@ -537,6 +538,8 @@ csio_mb_iq_write(struct csio_hw *hw, struct csio_mb *mbp, void *priv, 
		cmdp->iqns_to_fl0congen |= htonl(

			FW_IQ_CMD_FL0HOSTFCMODE_V(iq_params->fl0hostfcmode)|

			FW_IQ_CMD_FL0CPRIO_V(iq_params->fl0cprio)	|

			FW_IQ_CMD_FL0FETCHRO_V(relaxed)			|

			FW_IQ_CMD_FL0DATARO_V(relaxed)			|

			FW_IQ_CMD_FL0PADEN_V(iq_params->fl0paden)	|

			FW_IQ_CMD_FL0PACKEN_V(iq_params->fl0packen));

		cmdp->fl0dcaen_to_fl0cidxfthresh |= htons(

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