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| author | Tyrel Datwyler <tyreld@linux.ibm.com> | 2021-01-14 14:31:32 -0600 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-01-14 22:27:44 -0500 |
| commit | 9e6b6b81aafaf6e6d6d8f22e87b2cd9f2ffd66e8 (patch) | |
| tree | 99fd5c92aa053227c1f5904fad07bb1800ac3d7a /drivers/scsi/ibmvscsi | |
| parent | bb35ecb2a949d9f4be84343107826bc69f33e72c (diff) | |
| download | linux-stable-9e6b6b81aafaf6e6d6d8f22e87b2cd9f2ffd66e8.tar.gz linux-stable-9e6b6b81aafaf6e6d6d8f22e87b2cd9f2ffd66e8.tar.bz2 linux-stable-9e6b6b81aafaf6e6d6d8f22e87b2cd9f2ffd66e8.zip | |
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 <brking@linux.vnet.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ibmvscsi')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvfc.c | 14 |
1 files changed, 14 insertions, 0 deletions
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); |