GNU Linux-libre 5.4.274-gnu1
[releases.git] / arch / powerpc / include / asm / 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 <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
19 extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
20 extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
21 extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
22 extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
23 extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
24                                    struct opal_msg *msg);
25
26 extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr,
27                                   int enable);
28 int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
29 int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
30                            unsigned int virq);
31 int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num);
32 void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num);
33 int pnv_cxl_get_irq_count(struct pci_dev *dev);
34 struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev);
35 int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq);
36 bool is_pnv_opal_msi(struct irq_chip *chip);
37
38 #ifdef CONFIG_CXL_BASE
39 int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
40                                struct pci_dev *dev, int num);
41 void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
42                                   struct pci_dev *dev);
43 #endif
44
45 struct pnv_php_slot {
46         struct hotplug_slot             slot;
47         uint64_t                        id;
48         char                            *name;
49         int                             slot_no;
50         unsigned int                    flags;
51 #define PNV_PHP_FLAG_BROKEN_PDC         0x1
52         struct kref                     kref;
53 #define PNV_PHP_STATE_INITIALIZED       0
54 #define PNV_PHP_STATE_REGISTERED        1
55 #define PNV_PHP_STATE_POPULATED         2
56 #define PNV_PHP_STATE_OFFLINE           3
57         int                             state;
58         int                             irq;
59         struct workqueue_struct         *wq;
60         struct device_node              *dn;
61         struct pci_dev                  *pdev;
62         struct pci_bus                  *bus;
63         bool                            power_state_check;
64         u8                              attention_state;
65         void                            *fdt;
66         void                            *dt;
67         struct of_changeset             ocs;
68         struct pnv_php_slot             *parent;
69         struct list_head                children;
70         struct list_head                link;
71 };
72 extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
73 extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
74                                         uint8_t state);
75
76 #endif