lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[S390] qdio: fix qeth port count detection

Browse Source 
qeth needs to get the port count information before
qdio has allocated a page for the chsc operation.
Extend qdio_get_ssqd_desc() to store the data in the
specified structure.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Jan Glauber
2008-12-25 13:38:43 +01:00
committed by Martin Schwidefsky
parent 43c207e6e5
commit bbd50e172f
5 changed files with 55 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/s390/cio/qdio_setup.c
View File

@@ -243,22 +243,31 @@ no_qebsm:
QDIO_DBF_TEXT0(0, setup, "noV=V");
}
static int __get_ssqd_info(struct qdio_irq *irq_ptr)
/*
* If there is a qdio_irq we use the chsc_page and store the information
* in the qdio_irq, otherwise we copy it to the specified structure.
*/
int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
struct subchannel_id *schid,
struct qdio_ssqd_desc *data)
{
struct chsc_ssqd_area *ssqd;
int rc;
QDIO_DBF_TEXT0(0, setup, "getssqd");
ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
if (irq_ptr != NULL)
ssqd = (struct chsc_ssqd_area *)irq_ptr->chsc_page;
else
ssqd = (struct chsc_ssqd_area *)__get_free_page(GFP_KERNEL);
memset(ssqd, 0, PAGE_SIZE);
ssqd->request = (struct chsc_header) {
.length = 0x0010,
.code = 0x0024,
};
ssqd->first_sch = irq_ptr->schid.sch_no;
ssqd->last_sch = irq_ptr->schid.sch_no;
ssqd->ssid = irq_ptr->schid.ssid;
ssqd->first_sch = schid->sch_no;
ssqd->last_sch = schid->sch_no;
ssqd->ssid = schid->ssid;
if (chsc(ssqd))
return -EIO;
@@ -268,11 +277,17 @@ static int __get_ssqd_info(struct qdio_irq *irq_ptr)
if (!(ssqd->qdio_ssqd.flags & CHSC_FLAG_QDIO_CAPABILITY) ||
!(ssqd->qdio_ssqd.flags & CHSC_FLAG_VALIDITY) ||
(ssqd->qdio_ssqd.sch != irq_ptr->schid.sch_no))
(ssqd->qdio_ssqd.sch != schid->sch_no))
return -EINVAL;
memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd,
sizeof(struct qdio_ssqd_desc));
if (irq_ptr != NULL)
memcpy(&irq_ptr->ssqd_desc, &ssqd->qdio_ssqd,
sizeof(struct qdio_ssqd_desc));
else {
memcpy(data, &ssqd->qdio_ssqd,
sizeof(struct qdio_ssqd_desc));
free_page((unsigned long)ssqd);
}
return 0;
}
@@ -282,7 +297,7 @@ void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr)
char dbf_text[15];
int rc;
rc = __get_ssqd_info(irq_ptr);
rc = qdio_setup_get_ssqd(irq_ptr, &irq_ptr->schid, NULL);
if (rc) {
QDIO_DBF_TEXT2(0, setup, "ssqdasig");
sprintf(dbf_text, "schn%4x", irq_ptr->schid.sch_no);