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s390/pci: Expose FIDPARM attribute in sysfs

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This attribute will be used to communicate function type specific
firmware controlled flag bits.

Reviewed-by: Gerd Bayer <gbayer@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Niklas Schnelle 2024-10-02 10:29:00 +02:00 committed by Heiko Carstens
parent f626e79bfe
commit 99ad39306a
4 changed files with 7 additions and 2 deletions
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1
arch/s390/include/asm/pci.h
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@ -136,6 +136,7 @@ struct zpci_dev {
u8 pfgid; /* function group ID */
u8 pft; /* pci function type */
u8 port;
u8 fidparm;
u8 dtsm; /* Supported DT mask */
u8 rid_available : 1;
u8 has_hp_slot : 1;

5
arch/s390/include/asm/pci_clp.h
View File

@ -123,8 +123,9 @@ struct clp_rsp_query_pci {
u16 pchid;
__le32 bar[PCI_STD_NUM_BARS];
u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */
u16 : 12;
u16 port : 4;
u8 fidparm;
u8 reserved3 : 4;
u8 port : 4;
u8 fmb_len;
u8 pft; /* pci function type */
u64 sdma; /* start dma as */

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

@ -162,6 +162,7 @@ static int clp_store_query_pci_fn(struct zpci_dev *zdev,
zdev->pft = response->pft;
zdev->vfn = response->vfn;
zdev->port = response->port;
zdev->fidparm = response->fidparm;
zdev->uid = response->uid;
zdev->fmb_length = sizeof(u32) * response->fmb_len;
zdev->is_physfn = response->is_physfn;

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

@ -34,6 +34,7 @@ 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(fidparm, "0x%02x\n", fidparm);
zpci_attr(uid, "0x%x\n", uid);
zpci_attr(segment0, "0x%02x\n", pfip[0]);
zpci_attr(segment1, "0x%02x\n", pfip[1]);
@ -215,6 +216,7 @@ static struct attribute *zpci_dev_attrs[] = {
&dev_attr_pfgid.attr,
&dev_attr_pft.attr,
&dev_attr_port.attr,
&dev_attr_fidparm.attr,
&dev_attr_vfn.attr,
&dev_attr_uid.attr,
&dev_attr_recover.attr,