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))
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);
26 extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr,
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,
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);
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,
46 struct hotplug_slot slot;
51 #define PNV_PHP_FLAG_BROKEN_PDC 0x1
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
59 struct workqueue_struct *wq;
60 struct device_node *dn;
63 bool power_state_check;
67 struct of_changeset ocs;
68 struct pnv_php_slot *parent;
69 struct list_head children;
70 struct list_head link;
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,