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/**
* @defgroup pci_list_h libzpci: zPCI device handling
* @{
* @brief Work with zPCI devices
*
* Copyright IBM Corp. 2024
*
* s390-tools is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#ifndef LIB_ZPCI_PCI_LIST_H
#define LIB_ZPCI_PCI_LIST_H
#include <stdint.h>
#include <stdbool.h>
#include "util_list.h"
enum zpci_pft {
ZPCI_PFT_UNCLASSIFIED = 0x00,
ZPCI_PFT_ROCE_EXPRESS = 0x02,
ZPCI_PFT_ROCE_EXPRESS2 = 0x0a,
ZPCI_PFT_CNW = 0x0d,
ZPCI_PFT_NETH = 0x0c,
ZPCI_PFT_NETD = 0x0f,
ZPCI_PFT_NVME = 0x0b,
ZPCI_PFT_ISM = 0x05
};
/*
* Follows RFC 2863 operational states with the
* numeric values from IF_OPER_* in linux/if.h:
*/
typedef uint8_t operstate_t;
struct zpci_netdev {
char *name;
operstate_t operstate;
};
struct zpci_dev {
struct util_list_node entry;
/* PCI Domain */
uint32_t domain_nr;
/* PCI Bus (8 bits), Device (5 bits), Function (3 bits) */
union {
uint16_t val;
struct {
uint16_t bus : 8;
uint16_t dev : 5;
uint16_t fn : 3;
};
} bdf;
/* Function attributes (see linux/Documentation/arch/s390/pci.rst) */
uint32_t fid;
uint32_t uid;
uint16_t pchid;
uint16_t vfn;
uint8_t port;
enum zpci_pft pft;
bool uid_is_unique;
/* Configuration state 0 - Standby, 1 Configured */
bool conf;
/* Associated netdevs if any */
int num_netdevs;
struct zpci_netdev *netdevs;
};
/**
* Get if a PCI device is a PCI Virtual Function
*
* @param[in] zdev The device in question
*
* @return true if the device is a VF false otherwise
*/
static inline bool zpci_is_vf(struct zpci_dev *zdev)
{
return !!zdev->vfn;
}
struct util_list *zpci_dev_list(void);
void zpci_free_dev_list(struct util_list *zpci_list);
void zpci_free_dev(struct zpci_dev *zdev);
char *zpci_pci_addr(struct zpci_dev *zdev);
const char *zpci_pft_str(struct zpci_dev *zdev);
const char *zpci_operstate_str(operstate_t state);
operstate_t zpci_operstate_from_str(const char *oper_str);
struct zpci_dev *zpci_find_by_netdev(struct util_list *zpci_list, char *netdev_name,
struct zpci_netdev **netdev);
#endif /* LIB_ZPCI_PCI_LIST_H */
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