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From: Tyrel Datwyler <tyreld@linux.ibm.com>
To: james.bottomley@hansenpartnership.com
Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	brking@linux.ibm.com, Tyrel Datwyler <tyreld@linux.ibm.com>,
	Brian King <brking@linux.vnet.ibm.com>
Subject: [PATCH v2 08/17] ibmvfc: map/request irq and register Sub-CRQ interrupt handler
Date: Tue,  1 Dec 2020 18:53:20 -0600	[thread overview]
Message-ID: <20201202005329.4538-9-tyreld@linux.ibm.com> (raw)
In-Reply-To: <20201202005329.4538-1-tyreld@linux.ibm.com>

Create an irq mapping for the hw_irq number provided from phyp firmware.
Request an irq assigned our Sub-CRQ interrupt handler.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
---
 drivers/scsi/ibmvscsi/ibmvfc.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index a3e2d627c1ac..0336833a6950 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -5130,12 +5130,34 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost,
 		goto reg_failed;
 	}
 
+	scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
+
+	if (!scrq->irq) {
+		rc = -EINVAL;
+		dev_err(dev, "Error mapping sub-crq[%d] irq\n", index);
+		goto irq_failed;
+	}
+
+	snprintf(scrq->name, sizeof(scrq->name), "ibmvfc-%x-scsi%d",
+		 vdev->unit_address, index);
+	rc = request_irq(scrq->irq, ibmvfc_interrupt_scsi, 0, scrq->name, scrq);
+
+	if (rc) {
+		dev_err(dev, "Couldn't register sub-crq[%d] irq\n", index);
+		irq_dispose_mapping(scrq->irq);
+		goto irq_failed;
+	}
+
 	scrq->hwq_id = index;
 	scrq->vhost = vhost;
 
 	LEAVE;
 	return 0;
 
+irq_failed:
+	do {
+		plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie);
+	} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
 reg_failed:
 	dma_unmap_single(dev, scrq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
 dma_map_failed:
-- 
2.27.0


  parent reply	other threads:[~2020-12-02  0:54 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-02  0:53 [PATCH v2 00/17] ibmvfc: initial MQ development Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 01/17] ibmvfc: add vhost fields and defaults for MQ enablement Tyrel Datwyler
2020-12-02 15:14   ` Brian King
2020-12-02 17:27     ` Tyrel Datwyler
2020-12-04 14:26       ` Brian King
2020-12-07 11:56         ` Hannes Reinecke
2020-12-08 22:37           ` Tyrel Datwyler
2020-12-17 11:49             ` John Garry
2020-12-02  0:53 ` [PATCH v2 02/17] ibmvfc: define hcall wrapper for registering a Sub-CRQ Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 03/17] ibmvfc: add Subordinate CRQ definitions Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 04/17] ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels Tyrel Datwyler
2020-12-02 15:25   ` Brian King
2020-12-02 22:23     ` Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 05/17] ibmvfc: add Sub-CRQ IRQ enable/disable routine Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 06/17] ibmvfc: add handlers to drain and complete Sub-CRQ responses Tyrel Datwyler
2020-12-02 15:46   ` Brian King
2020-12-02 22:28     ` Tyrel Datwyler
2020-12-02 15:56   ` Brian King
2020-12-02  0:53 ` [PATCH v2 07/17] ibmvfc: define Sub-CRQ interrupt handler routine Tyrel Datwyler
2020-12-02  0:53 ` Tyrel Datwyler [this message]
2020-12-02  0:53 ` [PATCH v2 09/17] ibmvfc: implement channel enquiry and setup commands Tyrel Datwyler
2020-12-02 15:51   ` Brian King
2020-12-02  0:53 ` [PATCH v2 10/17] ibmvfc: advertise client support for using hardware channels Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 11/17] ibmvfc: set and track hw queue in ibmvfc_event struct Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 12/17] ibmvfc: send commands down HW Sub-CRQ when channelized Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 13/17] ibmvfc: register Sub-CRQ handles with VIOS during channel setup Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 14/17] ibmvfc: add cancel mad initialization helper Tyrel Datwyler
2020-12-02 16:00   ` Brian King
2020-12-02  0:53 ` [PATCH v2 15/17] ibmvfc: send Cancel MAD down each hw scsi channel Tyrel Datwyler
2020-12-02 18:27   ` Brian King
2020-12-02 22:09     ` Tyrel Datwyler
2020-12-02  0:53 ` [PATCH v2 16/17] ibmvfc: enable MQ and set reasonable defaults Tyrel Datwyler
2020-12-02 18:31   ` Brian King
2020-12-02  0:53 ` [PATCH v2 17/17] ibmvfc: provide modules parameters for MQ settings Tyrel Datwyler
2020-12-02 18:40   ` Brian King
2020-12-02 22:17     ` Tyrel Datwyler

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