From: Tyrel Datwyler <tyreld@linux.ibm.com>
To: james.bottomley@hansenpartnership.com
Cc: Tyrel Datwyler <tyreld@linux.ibm.com>,
martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org, brking@linux.ibm.com,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v4 11/21] ibmvfc: map/request irq and register Sub-CRQ interrupt handler
Date: Mon, 11 Jan 2021 17:12:15 -0600 [thread overview]
Message-ID: <20210111231225.105347-12-tyreld@linux.ibm.com> (raw)
In-Reply-To: <20210111231225.105347-1-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. Unmap these irqs
at Sub-CRQ teardown.
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 51bcafad9490..d3d7c6b53d4f 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -5292,12 +5292,34 @@ 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:
ibmvfc_free_queue(vhost, scrq);
LEAVE;
@@ -5313,6 +5335,9 @@ static void ibmvfc_deregister_scsi_channel(struct ibmvfc_host *vhost, int index)
ENTER;
+ free_irq(scrq->irq, scrq);
+ irq_dispose_mapping(scrq->irq);
+
do {
rc = plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address,
scrq->cookie);
--
2.27.0
next prev parent reply other threads:[~2021-01-11 23:39 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-11 23:12 [PATCH v4 00/21] ibmvfc: initial MQ development Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 01/21] ibmvfc: add vhost fields and defaults for MQ enablement Tyrel Datwyler
2021-01-12 11:43 ` John Garry
2021-01-12 22:54 ` Brian King
2021-01-13 0:33 ` Tyrel Datwyler
2021-01-13 17:13 ` Brian King
2021-01-14 1:27 ` Ming Lei
2021-01-14 17:24 ` Brian King
2021-01-15 1:47 ` Ming Lei
2021-01-11 23:12 ` [PATCH v4 02/21] ibmvfc: move event pool init/free routines Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 03/21] ibmvfc: init/free event pool during queue allocation/free Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 04/21] ibmvfc: add size parameter to ibmvfc_init_event_pool Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 05/21] ibmvfc: define hcall wrapper for registering a Sub-CRQ Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 06/21] ibmvfc: add Subordinate CRQ definitions Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 07/21] ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 08/21] ibmvfc: add Sub-CRQ IRQ enable/disable routine Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 09/21] ibmvfc: add handlers to drain and complete Sub-CRQ responses Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 10/21] ibmvfc: define Sub-CRQ interrupt handler routine Tyrel Datwyler
2021-01-11 23:12 ` Tyrel Datwyler [this message]
2021-01-11 23:12 ` [PATCH v4 12/21] ibmvfc: implement channel enquiry and setup commands Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 13/21] ibmvfc: advertise client support for using hardware channels Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 14/21] ibmvfc: set and track hw queue in ibmvfc_event struct Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 15/21] ibmvfc: send commands down HW Sub-CRQ when channelized Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 16/21] ibmvfc: register Sub-CRQ handles with VIOS during channel setup Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 17/21] ibmvfc: add cancel mad initialization helper Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 18/21] ibmvfc: send Cancel MAD down each hw scsi channel Tyrel Datwyler
2021-01-12 21:46 ` Brian King
2021-01-11 23:12 ` [PATCH v4 19/21] ibmvfc: purge scsi channels after transport loss/reset Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 20/21] ibmvfc: enable MQ and set reasonable defaults Tyrel Datwyler
2021-01-11 23:12 ` [PATCH v4 21/21] ibmvfc: provide modules parameters for MQ settings Tyrel Datwyler
2021-01-13 18:57 ` Brian King
2021-01-13 18:58 ` [PATCH v4 00/21] ibmvfc: initial MQ development Brian King
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