drivers/pci/hotplug/cpci_hotplug.h

   1 /*
   2  * CompactPCI Hot Plug Core Functions
   3  *
   4  * Copyright (C) 2002 SOMA Networks, Inc.
   5  * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
   6  * Copyright (C) 2001 IBM Corp.
   7  *
   8  * All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or (at
  13  * your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  18  * NON INFRINGEMENT.  See the GNU General Public License for more
  19  * details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  *
  25  * Send feedback to <scottm@somanetworks.com>
  26  */
  27
  28 #ifndef _CPCI_HOTPLUG_H
  29 #define _CPCI_HOTPLUG_H
  30
  31 #include <linux/types.h>
  32 #include <linux/pci.h>
  33 #include <linux/pci_hotplug.h>
  34
  35 /* PICMG 2.1 R2.0 HS CSR bits: */
  36 #define HS_CSR_INS      0x0080
  37 #define HS_CSR_EXT      0x0040
  38 #define HS_CSR_PI       0x0030
  39 #define HS_CSR_LOO      0x0008
  40 #define HS_CSR_PIE      0x0004
  41 #define HS_CSR_EIM      0x0002
  42 #define HS_CSR_DHA      0x0001
  43
  44 struct slot {
  45         u8 number;
  46         unsigned int devfn;
  47         struct pci_bus *bus;
  48         struct pci_dev *dev;
  49         unsigned int extracting;
  50         struct hotplug_slot *hotplug_slot;
  51         struct list_head slot_list;
  52 };
  53
  54 struct cpci_hp_controller_ops {
  55         int (*query_enum)(void);
  56         int (*enable_irq)(void);
  57         int (*disable_irq)(void);
  58         int (*check_irq)(void *dev_id);
  59         int (*hardware_test)(struct slot *slot, u32 value);
  60         u8  (*get_power)(struct slot *slot);
  61         int (*set_power)(struct slot *slot, int value);
  62 };
  63
  64 struct cpci_hp_controller {
  65         unsigned int irq;
  66         unsigned long irq_flags;
  67         char *devname;
  68         void *dev_id;
  69         char *name;
  70         struct cpci_hp_controller_ops *ops;
  71 };
  72
  73 static inline const char *slot_name(struct slot *slot)
  74 {
  75         return hotplug_slot_name(slot->hotplug_slot);
  76 }
  77
  78 int cpci_hp_register_controller(struct cpci_hp_controller *controller);
  79 int cpci_hp_unregister_controller(struct cpci_hp_controller *controller);
  80 int cpci_hp_register_bus(struct pci_bus *bus, u8 first, u8 last);
  81 int cpci_hp_unregister_bus(struct pci_bus *bus);
  82 int cpci_hp_start(void);
  83 int cpci_hp_stop(void);
  84
  85 /*
  86  * Internal function prototypes, these functions should not be used by
  87  * board/chassis drivers.
  88  */
  89 u8 cpci_get_attention_status(struct slot *slot);
  90 u8 cpci_get_latch_status(struct slot *slot);
  91 u8 cpci_get_adapter_status(struct slot *slot);
  92 u16 cpci_get_hs_csr(struct slot *slot);
  93 int cpci_set_attention_status(struct slot *slot, int status);
  94 int cpci_check_and_clear_ins(struct slot *slot);
  95 int cpci_check_ext(struct slot *slot);
  96 int cpci_clear_ext(struct slot *slot);
  97 int cpci_led_on(struct slot *slot);
  98 int cpci_led_off(struct slot *slot);
  99 int cpci_configure_slot(struct slot *slot);
 100 int cpci_unconfigure_slot(struct slot *slot);
 101
 102 #ifdef CONFIG_HOTPLUG_PCI_CPCI
 103 int cpci_hotplug_init(int debug);
 104 void cpci_hotplug_exit(void);
 105 #else
 106 static inline int cpci_hotplug_init(int debug) { return 0; }
 107 static inline void cpci_hotplug_exit(void) { }
 108 #endif
 109
 110 #endif  /* _CPCI_HOTPLUG_H */