tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
19extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
20extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
21extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
22extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
23extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
24 struct opal_msg *msg);
25extern int pnv_pci_set_p2p(struct pci_dev *initiator, struct pci_dev *target,
26 u64 desc);
27
28extern int pnv_pci_enable_tunnel(struct pci_dev *dev, uint64_t *asnind);
29extern int pnv_pci_disable_tunnel(struct pci_dev *dev);
30extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr,
31 int enable);
32extern int pnv_pci_get_as_notify_info(struct task_struct *task, u32 *lpid,
33 u32 *pid, u32 *tid);
34int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
35int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
36 unsigned int virq);
37int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num);
38void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num);
39int pnv_cxl_get_irq_count(struct pci_dev *dev);
40struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev);
41int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq);
42bool is_pnv_opal_msi(struct irq_chip *chip);
43
44#ifdef CONFIG_CXL_BASE
45int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
46 struct pci_dev *dev, int num);
47void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
48 struct pci_dev *dev);
49#endif
50
51struct pnv_php_slot {
52 struct hotplug_slot slot;
53 uint64_t id;
54 char *name;
55 int slot_no;
56 unsigned int flags;
57#define PNV_PHP_FLAG_BROKEN_PDC 0x1
58 struct kref kref;
59#define PNV_PHP_STATE_INITIALIZED 0
60#define PNV_PHP_STATE_REGISTERED 1
61#define PNV_PHP_STATE_POPULATED 2
62#define PNV_PHP_STATE_OFFLINE 3
63 int state;
64 int irq;
65 struct workqueue_struct *wq;
66 struct device_node *dn;
67 struct pci_dev *pdev;
68 struct pci_bus *bus;
69 bool power_state_check;
70 u8 attention_state;
71 void *fdt;
72 void *dt;
73 struct of_changeset ocs;
74 struct pnv_php_slot *parent;
75 struct list_head children;
76 struct list_head link;
77};
78extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
79extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
80 uint8_t state);
81
82#endif