pci/hotplug/cpci_hotplug.h

0001 /* SPDX-License-Identifier: GPL-2.0+ */
0002 /*
0003  * CompactPCI Hot Plug Core Functions
0004  *
0005  * Copyright (C) 2002 SOMA Networks, Inc.
0006  * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
0007  * Copyright (C) 2001 IBM Corp.
0008  *
0009  * All rights reserved.
0010  *
0011  * Send feedback to <scottm@somanetworks.com>
0012  */
0013
0014 #ifndef _CPCI_HOTPLUG_H
0015 #define _CPCI_HOTPLUG_H
0016
0017 #include <linux/types.h>
0018 #include <linux/pci.h>
0019 #include <linux/pci_hotplug.h>
0020
0021 /* PICMG 2.1 R2.0 HS CSR bits: */
0022 #define HS_CSR_INS  0x0080
0023 #define HS_CSR_EXT  0x0040
0024 #define HS_CSR_PI   0x0030
0025 #define HS_CSR_LOO  0x0008
0026 #define HS_CSR_PIE  0x0004
0027 #define HS_CSR_EIM  0x0002
0028 #define HS_CSR_DHA  0x0001
0029
0030 struct slot {
0031     u8 number;
0032     unsigned int devfn;
0033     struct pci_bus *bus;
0034     struct pci_dev *dev;
0035     unsigned int latch_status:1;
0036     unsigned int adapter_status:1;
0037     unsigned int extracting;
0038     struct hotplug_slot hotplug_slot;
0039     struct list_head slot_list;
0040 };
0041
0042 struct cpci_hp_controller_ops {
0043     int (*query_enum)(void);
0044     int (*enable_irq)(void);
0045     int (*disable_irq)(void);
0046     int (*check_irq)(void *dev_id);
0047     int (*hardware_test)(struct slot *slot, u32 value);
0048     u8  (*get_power)(struct slot *slot);
0049     int (*set_power)(struct slot *slot, int value);
0050 };
0051
0052 struct cpci_hp_controller {
0053     unsigned int irq;
0054     unsigned long irq_flags;
0055     char *devname;
0056     void *dev_id;
0057     char *name;
0058     struct cpci_hp_controller_ops *ops;
0059 };
0060
0061 static inline const char *slot_name(struct slot *slot)
0062 {
0063     return hotplug_slot_name(&slot->hotplug_slot);
0064 }
0065
0066 static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
0067 {
0068     return container_of(hotplug_slot, struct slot, hotplug_slot);
0069 }
0070
0071 int cpci_hp_register_controller(struct cpci_hp_controller *controller);
0072 int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
0073 int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
0074 int cpci_hp_unregister_bus(struct pci_bus *bus);
0075 int cpci_hp_start(void);
0076 int cpci_hp_stop(void);
0077
0078 /* Global variables */
0079 extern int cpci_debug;
0080
0081 /*
0082  * Internal function prototypes, these functions should not be used by
0083  * board/chassis drivers.
0084  */
0085 u8 cpci_get_attention_status(struct slot *slot);
0086 u8 cpci_get_latch_status(struct slot *slot);
0087 u8 cpci_get_adapter_status(struct slot *slot);
0088 u16 cpci_get_hs_csr(struct slot *slot);
0089 int cpci_set_attention_status(struct slot *slot, int status);
0090 int cpci_check_and_clear_ins(struct slot *slot);
0091 int cpci_check_ext(struct slot *slot);
0092 int cpci_clear_ext(struct slot *slot);
0093 int cpci_led_on(struct slot *slot);
0094 int cpci_led_off(struct slot *slot);
0095 int cpci_configure_slot(struct slot *slot);
0096 int cpci_unconfigure_slot(struct slot *slot);
0097
0098 #ifdef CONFIG_HOTPLUG_PCI_CPCI
0099 int cpci_hotplug_init(int debug);
0100 #else
0101 static inline int cpci_hotplug_init(int debug) { return 0; }
0102 #endif
0103
0104 #endif  /* _CPCI_HOTPLUG_H */