1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform. 4 * 5 * Copyright (C) 2003 Linda Xie <lxie@us.ibm.com> 6 * 7 * All rights reserved. 8 * 9 * Send feedback to <lxie@us.ibm.com>, 10 * 11 */ 12 13 #ifndef _PPC64PHP_H 14 #define _PPC64PHP_H 15 16 #include <linux/pci.h> 17 #include <linux/pci_hotplug.h> 18 19 #define DR_INDICATOR 9002 20 #define DR_ENTITY_SENSE 9003 21 22 #define POWER_ON 100 23 #define POWER_OFF 0 24 25 #define LED_OFF 0 26 #define LED_ON 1 /* continuous on */ 27 #define LED_ID 2 /* slow blinking */ 28 #define LED_ACTION 3 /* fast blinking */ 29 30 /* Sensor values from rtas_get-sensor */ 31 #define EMPTY 0 /* No card in slot */ 32 #define PRESENT 1 /* Card in slot */ 33 34 #define MY_NAME "rpaphp" 35 extern bool rpaphp_debug; 36 #define dbg(format, arg...) \ 37 do { \ 38 if (rpaphp_debug) \ 39 printk(KERN_DEBUG "%s: " format, \ 40 MY_NAME, ## arg); \ 41 } while (0) 42 #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME, ## arg) 43 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME, ## arg) 44 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME, ## arg) 45 46 /* slot states */ 47 48 #define NOT_VALID 3 49 #define NOT_CONFIGURED 2 50 #define CONFIGURED 1 51 #define EMPTY 0 52 53 /* DRC constants */ 54 55 #define MAX_DRC_NAME_LEN 64 56 57 /* 58 * struct slot - slot information for each *physical* slot 59 */ 60 struct slot { 61 struct list_head rpaphp_slot_list; 62 int state; 63 u32 index; 64 u32 type; 65 u32 power_domain; 66 u8 attention_status; 67 char *name; 68 struct device_node *dn; 69 struct pci_bus *bus; 70 struct list_head *pci_devs; 71 struct hotplug_slot hotplug_slot; 72 }; 73 74 extern const struct hotplug_slot_ops rpaphp_hotplug_slot_ops; 75 extern struct list_head rpaphp_slot_head; 76 to_slot(struct hotplug_slot * hotplug_slot)77 static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot) 78 { 79 return container_of(hotplug_slot, struct slot, hotplug_slot); 80 } 81 82 /* function prototypes */ 83 84 /* rpaphp_pci.c */ 85 int rpaphp_enable_slot(struct slot *slot); 86 int rpaphp_get_sensor_state(struct slot *slot, int *state); 87 88 /* rpaphp_core.c */ 89 int rpaphp_add_slot(struct device_node *dn); 90 int rpaphp_check_drc_props(struct device_node *dn, char *drc_name, 91 char *drc_type); 92 93 /* rpaphp_slot.c */ 94 void dealloc_slot_struct(struct slot *slot); 95 struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain); 96 int rpaphp_register_slot(struct slot *slot); 97 int rpaphp_deregister_slot(struct slot *slot); 98 99 #endif /* _PPC64PHP_H */ 100