mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 00:52:01 +00:00
1d57896638
List pci functions is used to query and iterate over pci functions. This function currently has 2 users - initial device discovery and rescan after a machine check. Instead of having a multipurpose function pass a callback which gets called for each pci function. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/*
|
|
* Copyright IBM Corp. 2012
|
|
*
|
|
* Author(s):
|
|
* Jan Glauber <jang@linux.vnet.ibm.com>
|
|
*/
|
|
|
|
#define COMPONENT "zPCI"
|
|
#define pr_fmt(fmt) COMPONENT ": " fmt
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
|
|
/* Content Code Description for PCI Function Error */
|
|
struct zpci_ccdf_err {
|
|
u32 reserved1;
|
|
u32 fh; /* function handle */
|
|
u32 fid; /* function id */
|
|
u32 ett : 4; /* expected table type */
|
|
u32 mvn : 12; /* MSI vector number */
|
|
u32 dmaas : 8; /* DMA address space */
|
|
u32 : 6;
|
|
u32 q : 1; /* event qualifier */
|
|
u32 rw : 1; /* read/write */
|
|
u64 faddr; /* failing address */
|
|
u32 reserved3;
|
|
u16 reserved4;
|
|
u16 pec; /* PCI event code */
|
|
} __packed;
|
|
|
|
/* Content Code Description for PCI Function Availability */
|
|
struct zpci_ccdf_avail {
|
|
u32 reserved1;
|
|
u32 fh; /* function handle */
|
|
u32 fid; /* function id */
|
|
u32 reserved2;
|
|
u32 reserved3;
|
|
u32 reserved4;
|
|
u32 reserved5;
|
|
u16 reserved6;
|
|
u16 pec; /* PCI event code */
|
|
} __packed;
|
|
|
|
static void zpci_event_log_err(struct zpci_ccdf_err *ccdf)
|
|
{
|
|
struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid);
|
|
|
|
zpci_err("SEI error CCD:\n");
|
|
zpci_err_hex(ccdf, sizeof(*ccdf));
|
|
dev_err(&zdev->pdev->dev, "event code: 0x%x\n", ccdf->pec);
|
|
}
|
|
|
|
static void zpci_event_log_avail(struct zpci_ccdf_avail *ccdf)
|
|
{
|
|
struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid);
|
|
|
|
pr_err("%s%s: availability event: fh: 0x%x fid: 0x%x event code: 0x%x reason:",
|
|
(zdev) ? dev_driver_string(&zdev->pdev->dev) : "?",
|
|
(zdev) ? dev_name(&zdev->pdev->dev) : "?",
|
|
ccdf->fh, ccdf->fid, ccdf->pec);
|
|
print_hex_dump(KERN_CONT, "ccdf", DUMP_PREFIX_OFFSET,
|
|
16, 1, ccdf, sizeof(*ccdf), false);
|
|
|
|
switch (ccdf->pec) {
|
|
case 0x0301:
|
|
zpci_enable_device(zdev);
|
|
break;
|
|
case 0x0302:
|
|
clp_add_pci_device(ccdf->fid, ccdf->fh, 0);
|
|
break;
|
|
case 0x0306:
|
|
clp_rescan_pci_devices();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void zpci_event_error(void *data)
|
|
{
|
|
struct zpci_ccdf_err *ccdf = data;
|
|
struct zpci_dev *zdev;
|
|
|
|
zpci_event_log_err(ccdf);
|
|
zdev = get_zdev_by_fid(ccdf->fid);
|
|
if (!zdev) {
|
|
pr_err("Error event for unknown fid: %x", ccdf->fid);
|
|
return;
|
|
}
|
|
}
|
|
|
|
void zpci_event_availability(void *data)
|
|
{
|
|
zpci_event_log_avail(data);
|
|
}
|