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s390/pci: Expose new port attribute for PCIe functions

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Add SysFS attribute that provides the port number for PCI functions
representing a single port of a multi-port device.

Signed-off-by: Alexander Schmidt <alexs@linux.ibm.com>
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Alexander Schmidt 2020-02-28 10:31:13 -05:00 committed by Vasily Gorbik
parent ae83d0b416
commit e6ab7490ff
4 changed files with 6 additions and 1 deletions
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1
arch/s390/include/asm/pci.h
View file

@ -108,6 +108,7 @@ struct zpci_dev {
u8 pfgid; /* function group ID */
u8 pft; /* pci function type */
u16 domain;
u8 port;
struct mutex lock;
u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */

3
arch/s390/include/asm/pci_clp.h
View file

@ -102,7 +102,8 @@ struct clp_rsp_query_pci {
u16 pchid;
__le32 bar[PCI_STD_NUM_BARS];
u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */
u32 : 16;
u16 : 12;
u16 port : 4;
u8 fmb_len;
u8 pft; /* pci function type */
u64 sdma; /* start dma as */

1
arch/s390/pci/pci_clp.c
View file

@ -155,6 +155,7 @@ static int clp_store_query_pci_fn(struct zpci_dev *zdev,
zdev->pfgid = response->pfgid;
zdev->pft = response->pft;
zdev->vfn = response->vfn;
zdev->port = response->port;
zdev->uid = response->uid;
zdev->fmb_length = sizeof(u32) * response->fmb_len;

2
arch/s390/pci/pci_sysfs.c
View file

@ -33,6 +33,7 @@ zpci_attr(pchid, "0x%04x\n", pchid);
zpci_attr(pfgid, "0x%02x\n", pfgid);
zpci_attr(vfn, "0x%04x\n", vfn);
zpci_attr(pft, "0x%02x\n", pft);
zpci_attr(port, "%d\n", port);
zpci_attr(uid, "0x%x\n", uid);
zpci_attr(segment0, "0x%02x\n", pfip[0]);
zpci_attr(segment1, "0x%02x\n", pfip[1]);
@ -142,6 +143,7 @@ static struct attribute *zpci_dev_attrs[] = {
&dev_attr_pchid.attr,
&dev_attr_pfgid.attr,
&dev_attr_pft.attr,
&dev_attr_port.attr,
&dev_attr_vfn.attr,
&dev_attr_uid.attr,
&dev_attr_recover.attr,