1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright 2014 IBM Corp.
10 #include <linux/pci_hotplug.h>
11 #include <linux/irq.h>
12 #include <misc/cxl-base.h>
13 #include <asm/opal-api.h>
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)
20 extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
21 extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
22 extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
23 extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
24 extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
25 struct opal_msg *msg);
27 extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr,
29 int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
30 int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
32 int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num);
33 void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num);
34 int pnv_cxl_get_irq_count(struct pci_dev *dev);
35 struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev);
36 int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq);
37 bool is_pnv_opal_msi(struct irq_chip *chip);
39 #ifdef CONFIG_CXL_BASE
40 int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
41 struct pci_dev *dev, int num);
42 void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
47 struct hotplug_slot slot;
52 #define PNV_PHP_FLAG_BROKEN_PDC 0x1
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
60 struct workqueue_struct *wq;
61 struct device_node *dn;
64 bool power_state_check;
68 struct of_changeset ocs;
69 struct pnv_php_slot *parent;
70 struct list_head children;
71 struct list_head link;
73 extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
74 extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,