drivers/pci/hotplug/rpaphp.h

   1 /*
   2  * PCI Hot Plug Controller Driver for RPA-compliant PPC64 platform.
   3  *
   4  * Copyright (C) 2003 Linda Xie <lxie@us.ibm.com>
   5  *
   6  * All rights reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or (at
  11  * your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  16  * NON INFRINGEMENT.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  * Send feedback to <lxie@us.ibm.com>,
  24  *
  25  */
  26
  27 #ifndef _PPC64PHP_H
  28 #define _PPC64PHP_H
  29
  30 #include <linux/pci.h>
  31 #include "pci_hotplug.h"
  32
  33 #define HOTPLUG 1
  34 #define EMBEDDED 0
  35
  36 #define DR_INDICATOR 9002
  37 #define DR_ENTITY_SENSE 9003
  38
  39 #define POWER_ON        100
  40 #define POWER_OFF       0
  41
  42 #define LED_OFF         0
  43 #define LED_ON          1       /* continuous on */
  44 #define LED_ID          2       /* slow blinking */
  45 #define LED_ACTION      3       /* fast blinking */
  46
  47 /* Error status from rtas_get-sensor */
  48 #define NEED_POWER    -9000     /* slot must be power up and unisolated to get state */
  49 #define PWR_ONLY      -9001     /* slot must be powerd up to get state, leave isolated */
  50 #define ERR_SENSE_USE -9002     /* No DR operation will succeed, slot is unusable  */
  51
  52 /* Sensor values from rtas_get-sensor */
  53 #define EMPTY           0       /* No card in slot */
  54 #define PRESENT         1       /* Card in slot */
  55
  56 #define MY_NAME "rpaphp"
  57 extern int debug;
  58 #define dbg(format, arg...)                                     \
  59         do {                                                    \
  60                 if (debug)                                      \
  61                         printk(KERN_DEBUG "%s: " format,        \
  62                                 MY_NAME , ## arg);              \
  63         } while (0)
  64 #define err(format, arg...) printk(KERN_ERR "%s: " format, MY_NAME , ## arg)
  65 #define info(format, arg...) printk(KERN_INFO "%s: " format, MY_NAME , ## arg)
  66 #define warn(format, arg...) printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
  67
  68 /* slot types */
  69 #define VIO_DEV 1
  70 #define PCI_DEV 2
  71
  72 /* slot states */
  73
  74 #define NOT_VALID       3
  75 #define NOT_CONFIGURED  2
  76 #define CONFIGURED      1
  77 #define EMPTY           0
  78
  79 struct rpaphp_pci_func {
  80         struct pci_dev *pci_dev;
  81         struct list_head sibling;
  82 };
  83
  84 /*
  85  * struct slot - slot information for each *physical* slot
  86  */
  87 struct slot {
  88         struct list_head rpaphp_slot_list;
  89         int state;
  90         u32 index;
  91         u32 type;
  92         u32 power_domain;
  93         char *name;
  94         char *location;
  95         u8 removable;
  96         u8 dev_type;            /* VIO or PCI */
  97         struct device_node *dn; /* slot's device_node in OFDT */
  98                                 /* dn has phb info */
  99         struct pci_dev *bridge; /* slot's pci_dev in pci_devices */
 100         union {
 101                 struct list_head pci_funcs; /* pci_devs in PCI slot */
 102                 struct vio_dev *vio_dev; /* vio_dev in VIO slot */
 103         } dev;
 104         struct hotplug_slot *hotplug_slot;
 105 };
 106
 107 extern struct hotplug_slot_ops rpaphp_hotplug_slot_ops;
 108 extern struct list_head rpaphp_slot_head;
 109 extern int num_slots;
 110
 111 static inline int is_hotplug_capable(struct device_node *dn)
 112 {
 113         unsigned char *ptr = get_property(dn, "ibm,fw-pci-hot-plug-ctrl", NULL);
 114
 115         return (int) (ptr != NULL);
 116 }
 117
 118 /* function prototypes */
 119
 120 /* rpaphp_pci.c */
 121 extern struct pci_dev *rpaphp_find_pci_dev(struct device_node *dn);
 122 extern int rpaphp_claim_resource(struct pci_dev *dev, int resource);
 123 extern int rpaphp_enable_pci_slot(struct slot *slot);
 124 extern int register_pci_slot(struct slot *slot);
 125 extern int rpaphp_unconfig_pci_adapter(struct slot *slot);
 126 extern int rpaphp_get_pci_adapter_status(struct slot *slot, int is_init, u8 * value);
 127 extern struct hotplug_slot *rpaphp_find_hotplug_slot(struct pci_dev *dev);
 128
 129 /* rpaphp_core.c */
 130 extern int rpaphp_add_slot(struct device_node *dn);
 131 extern int rpaphp_remove_slot(struct slot *slot);
 132 extern char *rpaphp_get_drc_name(struct device_node *dn);
 133
 134 /* rpaphp_vio.c */
 135 extern int rpaphp_get_vio_adapter_status(struct slot *slot, int is_init, u8 * value);
 136 extern int rpaphp_unconfig_vio_adapter(struct slot *slot);
 137 extern int register_vio_slot(struct device_node *dn);
 138 extern int rpaphp_enable_vio_slot(struct slot *slot);
 139
 140 /* rpaphp_slot.c */
 141 extern void dealloc_slot_struct(struct slot *slot);
 142 extern struct slot *alloc_slot_struct(struct device_node *dn, int drc_index, char *drc_name, int power_domain);
 143 extern int register_slot(struct slot *slot);
 144 extern int deregister_slot(struct slot *slot);
 145 extern int rpaphp_get_power_status(struct slot *slot, u8 * value);
 146 extern int rpaphp_set_attention_status(struct slot *slot, u8 status);
 147
 148 #endif                          /* _PPC64PHP_H */