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
21 extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
22 extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
23 extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
24 extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
25 extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
26 struct opal_msg *msg);
27
28 extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr,
29 int enable);
30 int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
31 int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
32 unsigned int virq);
33 int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num);
34 void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num);
35 int pnv_cxl_get_irq_count(struct pci_dev *dev);
36 struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev);
37 int64_t pnv_opal_pci_msi_eoi(struct irq_data *d);
38 bool is_pnv_opal_msi(struct irq_chip *chip);
39
40 #ifdef CONFIG_CXL_BASE
41 int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
42 struct pci_dev *dev, int num);
43 void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
44 struct pci_dev *dev);
45 #endif
46
47 struct 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 };
74 extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
75 extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
76 uint8_t state);
77
78 #endif
79
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