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 <misc/cxl-base.h>
14#include <asm/opal-api.h>
15
16#define PCI_SLOT_ID_PREFIX	(1UL << 63)
17#define PCI_SLOT_ID(phb_id, bdfn)	\
18	(PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id))
19#define PCI_PHB_SLOT_ID(phb_id)		(phb_id)
20
21extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
22extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
23extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
24extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
25extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
26				   struct opal_msg *msg);
27
28extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr,
29				  int enable);
30int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
31int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
32			   unsigned int virq);
33int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num);
34void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num);
35int pnv_cxl_get_irq_count(struct pci_dev *dev);
36struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev);
37int64_t pnv_opal_pci_msi_eoi(struct irq_data *d);
38bool is_pnv_opal_msi(struct irq_chip *chip);
39
40#ifdef CONFIG_CXL_BASE
41int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
42			       struct pci_dev *dev, int num);
43void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
44				  struct pci_dev *dev);
45#endif
46
47struct pnv_php_slot {
48	struct hotplug_slot		slot;
49	uint64_t			id;
50	char				*name;
51	int				slot_no;
52	unsigned int			flags;
53#define PNV_PHP_FLAG_BROKEN_PDC		0x1
54	struct kref			kref;
55#define PNV_PHP_STATE_INITIALIZED	0
56#define PNV_PHP_STATE_REGISTERED	1
57#define PNV_PHP_STATE_POPULATED		2
58#define PNV_PHP_STATE_OFFLINE		3
59	int				state;
60	int				irq;
61	struct workqueue_struct		*wq;
62	struct device_node		*dn;
63	struct pci_dev			*pdev;
64	struct pci_bus			*bus;
65	bool				power_state_check;
66	u8				attention_state;
67	void				*fdt;
68	void				*dt;
69	struct of_changeset		ocs;
70	struct pnv_php_slot		*parent;
71	struct list_head		children;
72	struct list_head		link;
73};
74extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
75extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
76					uint8_t state);
77
78#endif