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 <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 #define PCI_PHB_SLOT_ID(phb_id) (phb_id) 19 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); 26 27 int64_t pnv_opal_pci_msi_eoi(struct irq_data *d); 28 bool is_pnv_opal_msi(struct irq_chip *chip); 29 30 struct pnv_php_slot { 31 struct hotplug_slot slot; 32 uint64_t id; 33 char *name; 34 int slot_no; 35 unsigned int flags; 36 #define PNV_PHP_FLAG_BROKEN_PDC 0x1 37 struct kref kref; 38 #define PNV_PHP_STATE_INITIALIZED 0 39 #define PNV_PHP_STATE_REGISTERED 1 40 #define PNV_PHP_STATE_POPULATED 2 41 #define PNV_PHP_STATE_OFFLINE 3 42 int state; 43 int irq; 44 struct workqueue_struct *wq; 45 struct device_node *dn; 46 struct pci_dev *pdev; 47 struct pci_bus *bus; 48 bool power_state_check; 49 u8 attention_state; 50 void *fdt; 51 void *dt; 52 struct of_changeset ocs; 53 struct pnv_php_slot *parent; 54 struct list_head children; 55 struct list_head link; 56 }; 57 extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn); 58 extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot, 59 uint8_t state); 60 61 #endif 62