From 9e6b6b81aafaf6e6d6d8f22e87b2cd9f2ffd66e8 Mon Sep 17 00:00:00 2001 From: Tyrel Datwyler Date: Thu, 14 Jan 2021 14:31:32 -0600 Subject: scsi: ibmvfc: Define hcall wrapper for registering a Sub-CRQ Sub-CRQs are registred with firmware via a hypercall. Abstract that interface into a simpler helper function. Link: https://lore.kernel.org/r/20210114203148.246656-6-tyreld@linux.ibm.com Reviewed-by: Brian King Signed-off-by: Tyrel Datwyler Signed-off-by: Martin K. Petersen --- drivers/scsi/ibmvscsi/ibmvfc.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/scsi/ibmvscsi') diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 81491da51f8b..c31a1c4791d5 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); -- cgit v1.2.3