Commit 9e6b6b81 authored by Tyrel Datwyler's avatar Tyrel Datwyler Committed by Martin K. Petersen
Browse files

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: default avatarBrian King <brking@linux.vnet.ibm.com>
Signed-off-by: default avatarTyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent bb35ecb2

drivers/scsi/ibmvscsi/ibmvfc.c

+14 −0
Original line number Diff line number Diff line
@@ -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);