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 <misc/cxl-base.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
27extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr,
28				  int enable);
29int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
30int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
31			   unsigned int virq);
32int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num);
33void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num);
34int pnv_cxl_get_irq_count(struct pci_dev *dev);
35struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev);
36int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq);
37bool is_pnv_opal_msi(struct irq_chip *chip);
38
39#ifdef CONFIG_CXL_BASE
40int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
41			       struct pci_dev *dev, int num);
42void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
43				  struct pci_dev *dev);
44#endif
45
46struct pnv_php_slot {
47	struct hotplug_slot		slot;
48	uint64_t			id;
49	char				*name;
50	int				slot_no;
51	unsigned int			flags;
52#define PNV_PHP_FLAG_BROKEN_PDC		0x1
53	struct kref			kref;
54#define PNV_PHP_STATE_INITIALIZED	0
55#define PNV_PHP_STATE_REGISTERED	1
56#define PNV_PHP_STATE_POPULATED		2
57#define PNV_PHP_STATE_OFFLINE		3
58	int				state;
59	int				irq;
60	struct workqueue_struct		*wq;
61	struct device_node		*dn;
62	struct pci_dev			*pdev;
63	struct pci_bus			*bus;
64	bool				power_state_check;
65	u8				attention_state;
66	void				*fdt;
67	void				*dt;
68	struct of_changeset		ocs;
69	struct pnv_php_slot		*parent;
70	struct list_head		children;
71	struct list_head		link;
72};
73extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
74extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
75					uint8_t state);
76
77#endif
78