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 v5 08/21] ibmvfc: add Sub-CRQ IRQ enable/disable routine
Date: Thu, 14 Jan 2021 14:31:35 -0600 [thread overview]
Message-ID: <20210114203148.246656-9-tyreld@linux.ibm.com> (raw)
In-Reply-To: <20210114203148.246656-1-tyreld@linux.ibm.com>
Each Sub-CRQ has its own interrupt. A hypercall is required to toggle
the IRQ state. Provide the necessary mechanism via a helper function.
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index a198e118887d..5d7ada0ed0d6 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -3465,6 +3465,26 @@ static void ibmvfc_tasklet(void *data)
}
}
+static int ibmvfc_toggle_scrq_irq(struct ibmvfc_queue *scrq, int enable)
+{
+ struct device *dev = scrq->vhost->dev;
+ struct vio_dev *vdev = to_vio_dev(dev);
+ unsigned long rc;
+ int irq_action = H_ENABLE_VIO_INTERRUPT;
+
+ if (!enable)
+ irq_action = H_DISABLE_VIO_INTERRUPT;
+
+ rc = plpar_hcall_norets(H_VIOCTL, vdev->unit_address, irq_action,
+ scrq->hw_irq, 0, 0);
+
+ if (rc)
+ dev_err(dev, "Couldn't %s sub-crq[%lu] irq. rc=%ld\n",
+ enable ? "enable" : "disable", scrq->hwq_id, rc);
+
+ return rc;
+}
+
/**
* ibmvfc_init_tgt - Set the next init job step for the target
* @tgt: ibmvfc target struct
--
2.27.0
next prev parent reply other threads:[~2021-01-14 20:34 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-14 20:31 [PATCH v5 00/21] ibmvfc: initial MQ development/enablement Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 01/21] ibmvfc: add vhost fields and defaults for MQ enablement Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 02/21] ibmvfc: move event pool init/free routines Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 03/21] ibmvfc: init/free event pool during queue allocation/free Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 04/21] ibmvfc: add size parameter to ibmvfc_init_event_pool Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 05/21] ibmvfc: define hcall wrapper for registering a Sub-CRQ Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 06/21] ibmvfc: add Subordinate CRQ definitions Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 07/21] ibmvfc: add alloc/dealloc routines for SCSI Sub-CRQ Channels Tyrel Datwyler
2021-01-14 20:31 ` Tyrel Datwyler [this message]
2021-01-14 20:31 ` [PATCH v5 09/21] ibmvfc: add handlers to drain and complete Sub-CRQ responses Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 10/21] ibmvfc: define Sub-CRQ interrupt handler routine Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 11/21] ibmvfc: map/request irq and register Sub-CRQ interrupt handler Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 12/21] ibmvfc: implement channel enquiry and setup commands Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 13/21] ibmvfc: advertise client support for using hardware channels Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 14/21] ibmvfc: set and track hw queue in ibmvfc_event struct Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 15/21] ibmvfc: send commands down HW Sub-CRQ when channelized Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 16/21] ibmvfc: register Sub-CRQ handles with VIOS during channel setup Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 17/21] ibmvfc: add cancel mad initialization helper Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 18/21] ibmvfc: send Cancel MAD down each hw scsi channel Tyrel Datwyler
2021-01-14 22:42 ` Brian King
2021-01-14 20:31 ` [PATCH v5 19/21] ibmvfc: purge scsi channels after transport loss/reset Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 20/21] ibmvfc: enable MQ and set reasonable defaults Tyrel Datwyler
2021-01-14 20:31 ` [PATCH v5 21/21] ibmvfc: provide modules parameters for MQ settings Tyrel Datwyler
2021-01-14 22:44 ` Brian King
2021-01-14 22:47 ` [PATCH v5 00/21] ibmvfc: initial MQ development/enablement Brian King
2021-01-15 3:31 ` Martin K. Petersen
2021-01-21 3:34 ` Martin K. Petersen
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