diff mbox series

[v2,02/17] ibmvfc: define hcall wrapper for registering a Sub-CRQ

Message ID 20201202005329.4538-3-tyreld@linux.ibm.com (mailing list archive)
State Superseded
Headers show
Series ibmvfc: initial MQ development | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/merge (78c312324391ee996944e1196123b0060888e189)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/next (0bd4b96d99108b7ea9bac0573957483be7781d70)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linus/master (509a15421674b9e1a3e1916939d0d0efd3e578da)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/fixes (f54db39fbe40731c40aefdd3bc26e7d56d668c64)
snowpatch_ozlabs/apply_patch success Successfully applied on branch linux-next (0eedceafd3a63fd082743c914853ef4b9247dbe6)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 20 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Tyrel Datwyler Dec. 2, 2020, 12:53 a.m. UTC 
Sub-CRQs are registred with firmware via a hypercall. Abstract that
interface into a simpler 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 | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index f1d677a7423d..64674054dbae 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -138,6 +138,20 @@  static void ibmvfc_tgt_move_login(struct ibmvfc_target *);
 
 static const char *unknown_error = "unknown error";
 
+static long h_reg_sub_crq(unsigned long unit_address, unsigned long ioba,
+			  unsigned long length, unsigned long *cookie,
+			  unsigned long *irq)
+{
+	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+	long rc;
+
+	rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, ioba, length);
+	*cookie = retbuf[0];
+	*irq = retbuf[1];
+
+	return rc;
+}
+
 static int ibmvfc_check_caps(struct ibmvfc_host *vhost, unsigned long cap_flags)
 {
 	u64 host_caps = be64_to_cpu(vhost->login_buf->resp.capabilities);