/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright 2014 IBM Corp.
 */

#ifndef _ASM_PNV_PCI_H
#define _ASM_PNV_PCI_H

#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#include <linux/irq.h>
#include <linux/of.h>
#include <asm/opal-api.h>

#define PCI_SLOT_ID_PREFIX      (1UL << 63)
#define PCI_SLOT_ID(phb_id, bdfn)       \
        (PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id))
#define PCI_PHB_SLOT_ID(phb_id)         (phb_id)

extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
                                   struct opal_msg *msg);

int64_t pnv_opal_pci_msi_eoi(struct irq_data *d);
bool is_pnv_opal_msi(struct irq_chip *chip);

struct pnv_php_slot {
        struct hotplug_slot             slot;
        uint64_t                        id;
        char                            *name;
        int                             slot_no;
        unsigned int                    flags;
#define PNV_PHP_FLAG_BROKEN_PDC         0x1
        struct kref                     kref;
#define PNV_PHP_STATE_INITIALIZED       0
#define PNV_PHP_STATE_REGISTERED        1
#define PNV_PHP_STATE_POPULATED         2
#define PNV_PHP_STATE_OFFLINE           3
        int                             state;
        int                             irq;
        struct workqueue_struct         *wq;
        struct device_node              *dn;
        struct pci_dev                  *pdev;
        struct pci_bus                  *bus;
        bool                            power_state_check;
        u8                              attention_state;
        void                            *fdt;
        void                            *dt;
        struct of_changeset             ocs;
        struct pnv_php_slot             *parent;
        struct list_head                children;
        struct list_head                link;
};
extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
                                        uint8_t state);

#endif