2 * Copyright 2014 IBM Corp.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
10 #ifndef _ASM_PNV_PCI_H
11 #define _ASM_PNV_PCI_H
13 #include <linux/pci.h>
14 #include <linux/pci_hotplug.h>
15 #include <misc/cxl-base.h>
16 #include <asm/opal-api.h>
18 #define PCI_SLOT_ID_PREFIX 0x8000000000000000
19 #define PCI_SLOT_ID(phb_id, bdfn) \
20 (PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id))
22 extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
23 extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
24 extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
25 extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
26 extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
27 struct opal_msg *msg);
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);
37 #ifdef CONFIG_CXL_BASE
38 int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
39 struct pci_dev *dev, int num);
40 void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
43 /* Support for the cxl kernel api on the real PHB (instead of vPHB) */
44 int pnv_cxl_enable_phb_kernel_api(struct pci_controller *hose, bool enable);
45 bool pnv_pci_on_cxl_phb(struct pci_dev *dev);
46 struct cxl_afu *pnv_cxl_phb_to_afu(struct pci_controller *hose);
47 void pnv_cxl_phb_set_peer_afu(struct pci_dev *dev, struct cxl_afu *afu);
52 struct hotplug_slot slot;
53 struct hotplug_slot_info slot_info;
58 #define PNV_PHP_STATE_INITIALIZED 0
59 #define PNV_PHP_STATE_REGISTERED 1
60 #define PNV_PHP_STATE_POPULATED 2
61 #define PNV_PHP_STATE_OFFLINE 3
63 struct device_node *dn;
66 bool power_state_check;
69 struct of_changeset ocs;
70 struct pnv_php_slot *parent;
71 struct list_head children;
72 struct list_head link;
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,