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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright 2014 IBM Corp.
4 */
5
6#ifndef _ASM_PNV_PCI_H
7#define _ASM_PNV_PCI_H
8
9#include <linux/pci.h>
10#include <linux/pci_hotplug.h>
11#include <linux/irq.h>
12#include <linux/of.h>
13#include <asm/opal-api.h>
14
15#define PCI_SLOT_ID_PREFIX (1UL << 63)
16#define PCI_SLOT_ID(phb_id, bdfn) \
17 (PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id))
18#define PCI_PHB_SLOT_ID(phb_id) (phb_id)
19
20extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
21extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
22extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
23extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
24extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
25 struct opal_msg *msg);
26
27int64_t pnv_opal_pci_msi_eoi(struct irq_data *d);
28bool is_pnv_opal_msi(struct irq_chip *chip);
29
30struct pnv_php_slot {
31 struct hotplug_slot slot;
32 uint64_t id;
33 char *name;
34 int slot_no;
35 unsigned int flags;
36#define PNV_PHP_FLAG_BROKEN_PDC 0x1
37 struct kref kref;
38#define PNV_PHP_STATE_INITIALIZED 0
39#define PNV_PHP_STATE_REGISTERED 1
40#define PNV_PHP_STATE_POPULATED 2
41#define PNV_PHP_STATE_OFFLINE 3
42 int state;
43 int irq;
44 struct workqueue_struct *wq;
45 struct device_node *dn;
46 struct pci_dev *pdev;
47 struct pci_bus *bus;
48 bool power_state_check;
49 u8 attention_state;
50 void *fdt;
51 void *dt;
52 struct of_changeset ocs;
53 struct pnv_php_slot *parent;
54 struct list_head children;
55 struct list_head link;
56};
57extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
58extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
59 uint8_t state);
60
61#endif