pnv-pci.h

 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