| 1 |
1275 |
phoenix |
/*
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| 2 |
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* Compaq Hot Plug Controller Driver
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| 3 |
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*
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* Copyright (C) 1995,2001 Compaq Computer Corporation
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* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2001 IBM Corp.
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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| 20 |
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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| 23 |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <greg@kroah.com>
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*
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* Jan 12, 2003 - Added 66/100/133MHz PCI-X support,
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* Torben Mathiasen <torben.mathiasen@hp.com>
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*
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*/
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#include <linux/config.h>
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| 33 |
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#include <linux/module.h>
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#include <linux/kernel.h>
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| 35 |
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#include <linux/types.h>
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#include <linux/proc_fs.h>
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#include <linux/miscdevice.h>
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| 38 |
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#include <linux/slab.h>
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| 39 |
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#include <linux/pci.h>
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| 40 |
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#include <linux/init.h>
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| 41 |
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#include <asm/uaccess.h>
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#include "cpqphp.h"
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#include "cpqphp_nvram.h"
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#include "../../arch/i386/kernel/pci-i386.h" /* horrible hack showing how processor dependant we are... */
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| 47 |
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/* Global variables */
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| 48 |
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int cpqhp_debug;
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| 49 |
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struct controller *cpqhp_ctrl_list; /* = NULL */
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| 50 |
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struct pci_func *cpqhp_slot_list[256];
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| 51 |
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| 52 |
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/* local variables */
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| 53 |
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static void *smbios_table;
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| 54 |
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static void *smbios_start;
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| 55 |
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static void *cpqhp_rom_start;
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| 56 |
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static u8 power_mode;
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| 57 |
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static int debug;
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#define DRIVER_VERSION "0.9.7"
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#define DRIVER_AUTHOR "Dan Zink <dan.zink@compaq.com>, Greg Kroah-Hartman <greg@kroah.com>"
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#define DRIVER_DESC "Compaq Hot Plug PCI Controller Driver"
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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| 67 |
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MODULE_PARM(power_mode, "b");
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| 68 |
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MODULE_PARM_DESC(power_mode, "Power mode enabled or not");
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| 69 |
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| 70 |
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MODULE_PARM(debug, "i");
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| 71 |
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MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
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| 73 |
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#define CPQHPC_MODULE_MINOR 208
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| 75 |
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static int one_time_init (void);
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static int set_attention_status (struct hotplug_slot *slot, u8 value);
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| 77 |
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static int process_SI (struct hotplug_slot *slot);
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| 78 |
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static int process_SS (struct hotplug_slot *slot);
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| 79 |
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static int hardware_test (struct hotplug_slot *slot, u32 value);
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| 80 |
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static int get_power_status (struct hotplug_slot *slot, u8 *value);
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| 81 |
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static int get_attention_status (struct hotplug_slot *slot, u8 *value);
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| 82 |
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static int get_latch_status (struct hotplug_slot *slot, u8 *value);
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| 83 |
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static int get_adapter_status (struct hotplug_slot *slot, u8 *value);
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| 84 |
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static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
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| 85 |
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static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
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| 86 |
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| 87 |
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static struct hotplug_slot_ops cpqphp_hotplug_slot_ops = {
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| 88 |
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.owner = THIS_MODULE,
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| 89 |
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.set_attention_status = set_attention_status,
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| 90 |
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.enable_slot = process_SI,
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| 91 |
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.disable_slot = process_SS,
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| 92 |
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.hardware_test = hardware_test,
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| 93 |
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.get_power_status = get_power_status,
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| 94 |
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.get_attention_status = get_attention_status,
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| 95 |
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.get_latch_status = get_latch_status,
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| 96 |
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.get_adapter_status = get_adapter_status,
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| 97 |
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.get_max_bus_speed = get_max_bus_speed,
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| 98 |
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.get_cur_bus_speed = get_cur_bus_speed,
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| 99 |
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};
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| 101 |
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| 102 |
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static inline int is_slot64bit (struct slot *slot)
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| 103 |
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{
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| 104 |
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if (!slot || !slot->p_sm_slot)
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| 105 |
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return 0;
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| 106 |
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| 107 |
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if (readb(slot->p_sm_slot + SMBIOS_SLOT_WIDTH) == 0x06)
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| 108 |
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return 1;
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| 109 |
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| 110 |
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return 0;
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| 111 |
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}
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| 112 |
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| 113 |
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static inline int is_slot66mhz (struct slot *slot)
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| 114 |
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{
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| 115 |
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if (!slot || !slot->p_sm_slot)
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| 116 |
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return 0;
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| 117 |
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| 118 |
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if (readb(slot->p_sm_slot + SMBIOS_SLOT_TYPE) == 0x0E)
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| 119 |
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return 1;
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| 120 |
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| 121 |
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return 0;
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| 122 |
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}
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| 124 |
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/**
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| 125 |
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* detect_SMBIOS_pointer - find the system Management BIOS Table in the specified region of memory.
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| 126 |
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*
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| 127 |
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* @begin: begin pointer for region to be scanned.
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| 128 |
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* @end: end pointer for region to be scanned.
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| 129 |
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*
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| 130 |
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* Returns pointer to the head of the SMBIOS tables (or NULL)
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*
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| 132 |
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*/
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| 133 |
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static void * detect_SMBIOS_pointer(void *begin, void *end)
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| 134 |
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{
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| 135 |
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void *fp;
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| 136 |
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void *endp;
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| 137 |
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u8 temp1, temp2, temp3, temp4;
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| 138 |
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int status = 0;
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| 139 |
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| 140 |
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endp = (end - sizeof(u32) + 1);
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| 141 |
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| 142 |
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for (fp = begin; fp <= endp; fp += 16) {
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| 143 |
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temp1 = readb(fp);
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| 144 |
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temp2 = readb(fp+1);
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| 145 |
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temp3 = readb(fp+2);
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| 146 |
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temp4 = readb(fp+3);
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| 147 |
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if (temp1 == '_' &&
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| 148 |
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temp2 == 'S' &&
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temp3 == 'M' &&
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| 150 |
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temp4 == '_') {
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| 151 |
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status = 1;
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break;
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}
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}
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if (!status)
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fp = NULL;
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| 159 |
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dbg("Discovered SMBIOS Entry point at %p\n", fp);
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return fp;
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}
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/**
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* init_SERR - Initializes the per slot SERR generation.
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*
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* For unexpected switch opens
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*
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*/
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static int init_SERR(struct controller * ctrl)
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{
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u32 tempdword;
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u32 number_of_slots;
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u8 physical_slot;
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| 175 |
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| 176 |
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if (!ctrl)
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return 1;
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| 178 |
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| 179 |
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tempdword = ctrl->first_slot;
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| 180 |
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| 181 |
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number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
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| 182 |
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// Loop through slots
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| 183 |
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while (number_of_slots) {
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| 184 |
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physical_slot = tempdword;
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writeb(0, ctrl->hpc_reg + SLOT_SERR);
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tempdword++;
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| 187 |
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number_of_slots--;
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| 188 |
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}
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| 189 |
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| 190 |
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return 0;
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| 191 |
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}
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| 192 |
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| 193 |
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| 194 |
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/* nice debugging output */
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| 195 |
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static int pci_print_IRQ_route (void)
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| 196 |
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{
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| 197 |
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struct irq_routing_table *routing_table;
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| 198 |
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int len;
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| 199 |
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int loop;
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| 200 |
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| 201 |
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u8 tbus, tdevice, tslot;
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| 202 |
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| 203 |
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routing_table = pcibios_get_irq_routing_table();
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| 204 |
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if (routing_table == NULL) {
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| 205 |
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err("No BIOS Routing Table??? Not good\n");
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| 206 |
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return -ENOMEM;
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| 207 |
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}
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| 208 |
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| 209 |
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len = (routing_table->size - sizeof(struct irq_routing_table)) / sizeof(struct irq_info);
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| 210 |
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// Make sure I got at least one entry
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| 211 |
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if (len == 0) {
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| 212 |
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kfree(routing_table);
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| 213 |
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return -1;
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| 214 |
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}
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| 215 |
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| 216 |
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dbg("bus dev func slot\n");
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| 217 |
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| 218 |
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for (loop = 0; loop < len; ++loop) {
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| 219 |
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tbus = routing_table->slots[loop].bus;
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| 220 |
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tdevice = routing_table->slots[loop].devfn;
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| 221 |
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tslot = routing_table->slots[loop].slot;
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| 222 |
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dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot);
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| 223 |
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| 224 |
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}
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| 225 |
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kfree(routing_table);
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| 226 |
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return 0;
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| 227 |
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}
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| 228 |
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| 229 |
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| 230 |
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/*
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| 231 |
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* get_subsequent_smbios_entry
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| 232 |
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*
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| 233 |
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* Gets the first entry if previous == NULL
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| 234 |
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* Otherwise, returns the next entry
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| 235 |
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* Uses global SMBIOS Table pointer
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| 236 |
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*
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| 237 |
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* @curr: %NULL or pointer to previously returned structure
|
| 238 |
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*
|
| 239 |
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* returns a pointer to an SMBIOS structure or NULL if none found
|
| 240 |
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*/
|
| 241 |
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static void * get_subsequent_smbios_entry(void *smbios_start, void *smbios_table, void *curr)
|
| 242 |
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{
|
| 243 |
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u8 bail = 0;
|
| 244 |
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u8 previous_byte = 1;
|
| 245 |
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void *p_temp;
|
| 246 |
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void *p_max;
|
| 247 |
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|
| 248 |
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if (!smbios_table || !curr)
|
| 249 |
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return(NULL);
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| 250 |
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|
| 251 |
|
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// set p_max to the end of the table
|
| 252 |
|
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p_max = smbios_start + readw(smbios_table + ST_LENGTH);
|
| 253 |
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|
| 254 |
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p_temp = curr;
|
| 255 |
|
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p_temp += readb(curr + SMBIOS_GENERIC_LENGTH);
|
| 256 |
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|
| 257 |
|
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while ((p_temp < p_max) && !bail) {
|
| 258 |
|
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// Look for the double NULL terminator
|
| 259 |
|
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// The first condition is the previous byte and the second is the curr
|
| 260 |
|
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if (!previous_byte && !(readb(p_temp))) {
|
| 261 |
|
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bail = 1;
|
| 262 |
|
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}
|
| 263 |
|
|
|
| 264 |
|
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previous_byte = readb(p_temp);
|
| 265 |
|
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p_temp++;
|
| 266 |
|
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}
|
| 267 |
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|
|
| 268 |
|
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if (p_temp < p_max) {
|
| 269 |
|
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return p_temp;
|
| 270 |
|
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} else {
|
| 271 |
|
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return NULL;
|
| 272 |
|
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}
|
| 273 |
|
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}
|
| 274 |
|
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|
| 275 |
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|
| 276 |
|
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/**
|
| 277 |
|
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* get_SMBIOS_entry
|
| 278 |
|
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*
|
| 279 |
|
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* @type:SMBIOS structure type to be returned
|
| 280 |
|
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* @previous: %NULL or pointer to previously returned structure
|
| 281 |
|
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*
|
| 282 |
|
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* Gets the first entry of the specified type if previous == NULL
|
| 283 |
|
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* Otherwise, returns the next entry of the given type.
|
| 284 |
|
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* Uses global SMBIOS Table pointer
|
| 285 |
|
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* Uses get_subsequent_smbios_entry
|
| 286 |
|
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*
|
| 287 |
|
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* returns a pointer to an SMBIOS structure or %NULL if none found
|
| 288 |
|
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*/
|
| 289 |
|
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static void *get_SMBIOS_entry (void *smbios_start, void *smbios_table, u8 type, void * previous)
|
| 290 |
|
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{
|
| 291 |
|
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if (!smbios_table)
|
| 292 |
|
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return NULL;
|
| 293 |
|
|
|
| 294 |
|
|
if (!previous) {
|
| 295 |
|
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previous = smbios_start;
|
| 296 |
|
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} else {
|
| 297 |
|
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previous = get_subsequent_smbios_entry(smbios_start, smbios_table, previous);
|
| 298 |
|
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}
|
| 299 |
|
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|
| 300 |
|
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while (previous) {
|
| 301 |
|
|
if (readb(previous + SMBIOS_GENERIC_TYPE) != type) {
|
| 302 |
|
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previous = get_subsequent_smbios_entry(smbios_start, smbios_table, previous);
|
| 303 |
|
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} else {
|
| 304 |
|
|
break;
|
| 305 |
|
|
}
|
| 306 |
|
|
}
|
| 307 |
|
|
|
| 308 |
|
|
return previous;
|
| 309 |
|
|
}
|
| 310 |
|
|
|
| 311 |
|
|
|
| 312 |
|
|
static int ctrl_slot_setup (struct controller * ctrl, void *smbios_start, void *smbios_table)
|
| 313 |
|
|
{
|
| 314 |
|
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struct slot *new_slot;
|
| 315 |
|
|
u8 number_of_slots;
|
| 316 |
|
|
u8 slot_device;
|
| 317 |
|
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u8 slot_number;
|
| 318 |
|
|
u8 ctrl_slot;
|
| 319 |
|
|
u32 tempdword;
|
| 320 |
|
|
void *slot_entry= NULL;
|
| 321 |
|
|
int result;
|
| 322 |
|
|
|
| 323 |
|
|
dbg("%s\n", __FUNCTION__);
|
| 324 |
|
|
|
| 325 |
|
|
tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
|
| 326 |
|
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|
| 327 |
|
|
number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
|
| 328 |
|
|
slot_device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4;
|
| 329 |
|
|
slot_number = ctrl->first_slot;
|
| 330 |
|
|
|
| 331 |
|
|
while (number_of_slots) {
|
| 332 |
|
|
new_slot = (struct slot *) kmalloc(sizeof(struct slot), GFP_KERNEL);
|
| 333 |
|
|
if (!new_slot)
|
| 334 |
|
|
return -ENOMEM;
|
| 335 |
|
|
|
| 336 |
|
|
memset(new_slot, 0, sizeof(struct slot));
|
| 337 |
|
|
new_slot->hotplug_slot = kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL);
|
| 338 |
|
|
if (!new_slot->hotplug_slot) {
|
| 339 |
|
|
kfree (new_slot);
|
| 340 |
|
|
return -ENOMEM;
|
| 341 |
|
|
}
|
| 342 |
|
|
memset(new_slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
|
| 343 |
|
|
|
| 344 |
|
|
new_slot->hotplug_slot->info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
|
| 345 |
|
|
if (!new_slot->hotplug_slot->info) {
|
| 346 |
|
|
kfree (new_slot->hotplug_slot);
|
| 347 |
|
|
kfree (new_slot);
|
| 348 |
|
|
return -ENOMEM;
|
| 349 |
|
|
}
|
| 350 |
|
|
memset(new_slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
|
| 351 |
|
|
new_slot->hotplug_slot->name = kmalloc (SLOT_NAME_SIZE, GFP_KERNEL);
|
| 352 |
|
|
if (!new_slot->hotplug_slot->name) {
|
| 353 |
|
|
kfree (new_slot->hotplug_slot->info);
|
| 354 |
|
|
kfree (new_slot->hotplug_slot);
|
| 355 |
|
|
kfree (new_slot);
|
| 356 |
|
|
return -ENOMEM;
|
| 357 |
|
|
}
|
| 358 |
|
|
|
| 359 |
|
|
new_slot->magic = SLOT_MAGIC;
|
| 360 |
|
|
new_slot->ctrl = ctrl;
|
| 361 |
|
|
new_slot->bus = ctrl->bus;
|
| 362 |
|
|
new_slot->device = slot_device;
|
| 363 |
|
|
new_slot->number = slot_number;
|
| 364 |
|
|
dbg("slot->number = %d\n",new_slot->number);
|
| 365 |
|
|
|
| 366 |
|
|
slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9, slot_entry);
|
| 367 |
|
|
|
| 368 |
|
|
while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) != new_slot->number)) {
|
| 369 |
|
|
slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9, slot_entry);
|
| 370 |
|
|
}
|
| 371 |
|
|
|
| 372 |
|
|
new_slot->p_sm_slot = slot_entry;
|
| 373 |
|
|
|
| 374 |
|
|
init_timer(&new_slot->task_event);
|
| 375 |
|
|
new_slot->task_event.expires = jiffies + 5 * HZ;
|
| 376 |
|
|
new_slot->task_event.function = cpqhp_pushbutton_thread;
|
| 377 |
|
|
|
| 378 |
|
|
//FIXME: these capabilities aren't used but if they are
|
| 379 |
|
|
// they need to be correctly implemented
|
| 380 |
|
|
new_slot->capabilities |= PCISLOT_REPLACE_SUPPORTED;
|
| 381 |
|
|
new_slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED;
|
| 382 |
|
|
|
| 383 |
|
|
if (is_slot64bit(new_slot))
|
| 384 |
|
|
new_slot->capabilities |= PCISLOT_64_BIT_SUPPORTED;
|
| 385 |
|
|
if (is_slot66mhz(new_slot))
|
| 386 |
|
|
new_slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED;
|
| 387 |
|
|
if (ctrl->speed == PCI_SPEED_66MHz)
|
| 388 |
|
|
new_slot->capabilities |= PCISLOT_66_MHZ_OPERATION;
|
| 389 |
|
|
|
| 390 |
|
|
ctrl_slot = slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4);
|
| 391 |
|
|
|
| 392 |
|
|
// Check presence
|
| 393 |
|
|
new_slot->capabilities |= ((((~tempdword) >> 23) | ((~tempdword) >> 15)) >> ctrl_slot) & 0x02;
|
| 394 |
|
|
// Check the switch state
|
| 395 |
|
|
new_slot->capabilities |= ((~tempdword & 0xFF) >> ctrl_slot) & 0x01;
|
| 396 |
|
|
// Check the slot enable
|
| 397 |
|
|
new_slot->capabilities |= ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04;
|
| 398 |
|
|
|
| 399 |
|
|
/* register this slot with the hotplug pci core */
|
| 400 |
|
|
new_slot->hotplug_slot->private = new_slot;
|
| 401 |
|
|
make_slot_name (new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
|
| 402 |
|
|
new_slot->hotplug_slot->ops = &cpqphp_hotplug_slot_ops;
|
| 403 |
|
|
|
| 404 |
|
|
new_slot->hotplug_slot->info->power_status = get_slot_enabled(ctrl, new_slot);
|
| 405 |
|
|
new_slot->hotplug_slot->info->attention_status = cpq_get_attention_status(ctrl, new_slot);
|
| 406 |
|
|
new_slot->hotplug_slot->info->latch_status = cpq_get_latch_status(ctrl, new_slot);
|
| 407 |
|
|
new_slot->hotplug_slot->info->adapter_status = get_presence_status(ctrl, new_slot);
|
| 408 |
|
|
|
| 409 |
|
|
dbg ("registering bus %d, dev %d, number %d, ctrl->slot_device_offset %d, slot %d\n",
|
| 410 |
|
|
new_slot->bus, new_slot->device, new_slot->number, ctrl->slot_device_offset, slot_number);
|
| 411 |
|
|
result = pci_hp_register (new_slot->hotplug_slot);
|
| 412 |
|
|
if (result) {
|
| 413 |
|
|
err ("pci_hp_register failed with error %d\n", result);
|
| 414 |
|
|
kfree (new_slot->hotplug_slot->info);
|
| 415 |
|
|
kfree (new_slot->hotplug_slot->name);
|
| 416 |
|
|
kfree (new_slot->hotplug_slot);
|
| 417 |
|
|
kfree (new_slot);
|
| 418 |
|
|
return result;
|
| 419 |
|
|
}
|
| 420 |
|
|
|
| 421 |
|
|
new_slot->next = ctrl->slot;
|
| 422 |
|
|
ctrl->slot = new_slot;
|
| 423 |
|
|
|
| 424 |
|
|
number_of_slots--;
|
| 425 |
|
|
slot_device++;
|
| 426 |
|
|
slot_number++;
|
| 427 |
|
|
}
|
| 428 |
|
|
|
| 429 |
|
|
return(0);
|
| 430 |
|
|
}
|
| 431 |
|
|
|
| 432 |
|
|
|
| 433 |
|
|
static int ctrl_slot_cleanup (struct controller * ctrl)
|
| 434 |
|
|
{
|
| 435 |
|
|
struct slot *old_slot, *next_slot;
|
| 436 |
|
|
|
| 437 |
|
|
old_slot = ctrl->slot;
|
| 438 |
|
|
ctrl->slot = NULL;
|
| 439 |
|
|
|
| 440 |
|
|
while (old_slot) {
|
| 441 |
|
|
next_slot = old_slot->next;
|
| 442 |
|
|
pci_hp_deregister (old_slot->hotplug_slot);
|
| 443 |
|
|
kfree(old_slot->hotplug_slot->info);
|
| 444 |
|
|
kfree(old_slot->hotplug_slot->name);
|
| 445 |
|
|
kfree(old_slot->hotplug_slot);
|
| 446 |
|
|
kfree(old_slot);
|
| 447 |
|
|
old_slot = next_slot;
|
| 448 |
|
|
}
|
| 449 |
|
|
|
| 450 |
|
|
//Free IRQ associated with hot plug device
|
| 451 |
|
|
free_irq(ctrl->interrupt, ctrl);
|
| 452 |
|
|
//Unmap the memory
|
| 453 |
|
|
iounmap(ctrl->hpc_reg);
|
| 454 |
|
|
//Finally reclaim PCI mem
|
| 455 |
|
|
release_mem_region(pci_resource_start(ctrl->pci_dev, 0),
|
| 456 |
|
|
pci_resource_len(ctrl->pci_dev, 0));
|
| 457 |
|
|
|
| 458 |
|
|
return(0);
|
| 459 |
|
|
}
|
| 460 |
|
|
|
| 461 |
|
|
|
| 462 |
|
|
//============================================================================
|
| 463 |
|
|
// function: get_slot_mapping
|
| 464 |
|
|
//
|
| 465 |
|
|
// Description: Attempts to determine a logical slot mapping for a PCI
|
| 466 |
|
|
// device. Won't work for more than one PCI-PCI bridge
|
| 467 |
|
|
// in a slot.
|
| 468 |
|
|
//
|
| 469 |
|
|
// Input: u8 bus_num - bus number of PCI device
|
| 470 |
|
|
// u8 dev_num - device number of PCI device
|
| 471 |
|
|
// u8 *slot - Pointer to u8 where slot number will
|
| 472 |
|
|
// be returned
|
| 473 |
|
|
//
|
| 474 |
|
|
// Output: SUCCESS or FAILURE
|
| 475 |
|
|
//=============================================================================
|
| 476 |
|
|
static int get_slot_mapping (struct pci_ops *ops, u8 bus_num, u8 dev_num, u8 *slot)
|
| 477 |
|
|
{
|
| 478 |
|
|
struct irq_routing_table *PCIIRQRoutingInfoLength;
|
| 479 |
|
|
u32 work;
|
| 480 |
|
|
long len;
|
| 481 |
|
|
long loop;
|
| 482 |
|
|
|
| 483 |
|
|
u8 tbus, tdevice, tslot, bridgeSlot;
|
| 484 |
|
|
|
| 485 |
|
|
dbg("%s %p, %d, %d, %p\n", __FUNCTION__, ops, bus_num, dev_num, slot);
|
| 486 |
|
|
|
| 487 |
|
|
bridgeSlot = 0xFF;
|
| 488 |
|
|
|
| 489 |
|
|
PCIIRQRoutingInfoLength = pcibios_get_irq_routing_table();
|
| 490 |
|
|
|
| 491 |
|
|
len = (PCIIRQRoutingInfoLength->size -
|
| 492 |
|
|
sizeof(struct irq_routing_table)) / sizeof(struct irq_info);
|
| 493 |
|
|
// Make sure I got at least one entry
|
| 494 |
|
|
if (len == 0) {
|
| 495 |
|
|
if (PCIIRQRoutingInfoLength != NULL) kfree(PCIIRQRoutingInfoLength );
|
| 496 |
|
|
return -1;
|
| 497 |
|
|
}
|
| 498 |
|
|
|
| 499 |
|
|
|
| 500 |
|
|
for (loop = 0; loop < len; ++loop) {
|
| 501 |
|
|
tbus = PCIIRQRoutingInfoLength->slots[loop].bus;
|
| 502 |
|
|
tdevice = PCIIRQRoutingInfoLength->slots[loop].devfn >> 3;
|
| 503 |
|
|
tslot = PCIIRQRoutingInfoLength->slots[loop].slot;
|
| 504 |
|
|
|
| 505 |
|
|
if ((tbus == bus_num) && (tdevice == dev_num)) {
|
| 506 |
|
|
*slot = tslot;
|
| 507 |
|
|
|
| 508 |
|
|
if (PCIIRQRoutingInfoLength != NULL) kfree(PCIIRQRoutingInfoLength );
|
| 509 |
|
|
return 0;
|
| 510 |
|
|
} else {
|
| 511 |
|
|
// Didn't get a match on the target PCI device. Check if the
|
| 512 |
|
|
// current IRQ table entry is a PCI-to-PCI bridge device. If so,
|
| 513 |
|
|
// and it's secondary bus matches the bus number for the target
|
| 514 |
|
|
// device, I need to save the bridge's slot number. If I can't
|
| 515 |
|
|
// find an entry for the target device, I will have to assume it's
|
| 516 |
|
|
// on the other side of the bridge, and assign it the bridge's slot.
|
| 517 |
|
|
pci_read_config_dword_nodev (ops, tbus, tdevice, 0, PCI_REVISION_ID, &work);
|
| 518 |
|
|
|
| 519 |
|
|
if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
|
| 520 |
|
|
pci_read_config_dword_nodev (ops, tbus, tdevice, 0, PCI_PRIMARY_BUS, &work);
|
| 521 |
|
|
// See if bridge's secondary bus matches target bus.
|
| 522 |
|
|
if (((work >> 8) & 0x000000FF) == (long) bus_num) {
|
| 523 |
|
|
bridgeSlot = tslot;
|
| 524 |
|
|
}
|
| 525 |
|
|
}
|
| 526 |
|
|
}
|
| 527 |
|
|
|
| 528 |
|
|
}
|
| 529 |
|
|
|
| 530 |
|
|
|
| 531 |
|
|
// If we got here, we didn't find an entry in the IRQ mapping table
|
| 532 |
|
|
// for the target PCI device. If we did determine that the target
|
| 533 |
|
|
// device is on the other side of a PCI-to-PCI bridge, return the
|
| 534 |
|
|
// slot number for the bridge.
|
| 535 |
|
|
if (bridgeSlot != 0xFF) {
|
| 536 |
|
|
*slot = bridgeSlot;
|
| 537 |
|
|
if (PCIIRQRoutingInfoLength != NULL) kfree(PCIIRQRoutingInfoLength );
|
| 538 |
|
|
return 0;
|
| 539 |
|
|
}
|
| 540 |
|
|
if (PCIIRQRoutingInfoLength != NULL) kfree(PCIIRQRoutingInfoLength );
|
| 541 |
|
|
// Couldn't find an entry in the routing table for this PCI device
|
| 542 |
|
|
return -1;
|
| 543 |
|
|
}
|
| 544 |
|
|
|
| 545 |
|
|
|
| 546 |
|
|
/**
|
| 547 |
|
|
* cpqhp_set_attention_status - Turns the Amber LED for a slot on or off
|
| 548 |
|
|
*
|
| 549 |
|
|
*/
|
| 550 |
|
|
static int cpqhp_set_attention_status (struct controller *ctrl, struct pci_func *func, u32 status)
|
| 551 |
|
|
{
|
| 552 |
|
|
u8 hp_slot;
|
| 553 |
|
|
|
| 554 |
|
|
hp_slot = func->device - ctrl->slot_device_offset;
|
| 555 |
|
|
|
| 556 |
|
|
if (func == NULL)
|
| 557 |
|
|
return(1);
|
| 558 |
|
|
|
| 559 |
|
|
// Wait for exclusive access to hardware
|
| 560 |
|
|
down(&ctrl->crit_sect);
|
| 561 |
|
|
|
| 562 |
|
|
if (status == 1) {
|
| 563 |
|
|
amber_LED_on (ctrl, hp_slot);
|
| 564 |
|
|
} else if (status == 0) {
|
| 565 |
|
|
amber_LED_off (ctrl, hp_slot);
|
| 566 |
|
|
} else {
|
| 567 |
|
|
// Done with exclusive hardware access
|
| 568 |
|
|
up(&ctrl->crit_sect);
|
| 569 |
|
|
return(1);
|
| 570 |
|
|
}
|
| 571 |
|
|
|
| 572 |
|
|
set_SOGO(ctrl);
|
| 573 |
|
|
|
| 574 |
|
|
// Wait for SOBS to be unset
|
| 575 |
|
|
wait_for_ctrl_irq (ctrl);
|
| 576 |
|
|
|
| 577 |
|
|
// Done with exclusive hardware access
|
| 578 |
|
|
up(&ctrl->crit_sect);
|
| 579 |
|
|
|
| 580 |
|
|
return(0);
|
| 581 |
|
|
}
|
| 582 |
|
|
|
| 583 |
|
|
|
| 584 |
|
|
/**
|
| 585 |
|
|
* set_attention_status - Turns the Amber LED for a slot on or off
|
| 586 |
|
|
*
|
| 587 |
|
|
*/
|
| 588 |
|
|
static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
|
| 589 |
|
|
{
|
| 590 |
|
|
struct pci_func *slot_func;
|
| 591 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 592 |
|
|
struct controller *ctrl;
|
| 593 |
|
|
u8 bus;
|
| 594 |
|
|
u8 devfn;
|
| 595 |
|
|
u8 device;
|
| 596 |
|
|
u8 function;
|
| 597 |
|
|
|
| 598 |
|
|
if (slot == NULL)
|
| 599 |
|
|
return -ENODEV;
|
| 600 |
|
|
|
| 601 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 602 |
|
|
|
| 603 |
|
|
ctrl = slot->ctrl;
|
| 604 |
|
|
if (ctrl == NULL)
|
| 605 |
|
|
return -ENODEV;
|
| 606 |
|
|
|
| 607 |
|
|
if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1)
|
| 608 |
|
|
return -ENODEV;
|
| 609 |
|
|
|
| 610 |
|
|
device = devfn >> 3;
|
| 611 |
|
|
function = devfn & 0x7;
|
| 612 |
|
|
dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function);
|
| 613 |
|
|
|
| 614 |
|
|
slot_func = cpqhp_slot_find(bus, device, function);
|
| 615 |
|
|
if (!slot_func) {
|
| 616 |
|
|
return -ENODEV;
|
| 617 |
|
|
}
|
| 618 |
|
|
|
| 619 |
|
|
return cpqhp_set_attention_status(ctrl, slot_func, status);
|
| 620 |
|
|
}
|
| 621 |
|
|
|
| 622 |
|
|
|
| 623 |
|
|
static int process_SI (struct hotplug_slot *hotplug_slot)
|
| 624 |
|
|
{
|
| 625 |
|
|
struct pci_func *slot_func;
|
| 626 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 627 |
|
|
struct controller *ctrl;
|
| 628 |
|
|
u8 bus;
|
| 629 |
|
|
u8 devfn;
|
| 630 |
|
|
u8 device;
|
| 631 |
|
|
u8 function;
|
| 632 |
|
|
|
| 633 |
|
|
if (slot == NULL)
|
| 634 |
|
|
return -ENODEV;
|
| 635 |
|
|
|
| 636 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 637 |
|
|
|
| 638 |
|
|
ctrl = slot->ctrl;
|
| 639 |
|
|
if (ctrl == NULL)
|
| 640 |
|
|
return -ENODEV;
|
| 641 |
|
|
|
| 642 |
|
|
if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1)
|
| 643 |
|
|
return -ENODEV;
|
| 644 |
|
|
|
| 645 |
|
|
device = devfn >> 3;
|
| 646 |
|
|
function = devfn & 0x7;
|
| 647 |
|
|
dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function);
|
| 648 |
|
|
|
| 649 |
|
|
slot_func = cpqhp_slot_find(bus, device, function);
|
| 650 |
|
|
if (!slot_func) {
|
| 651 |
|
|
return -ENODEV;
|
| 652 |
|
|
}
|
| 653 |
|
|
|
| 654 |
|
|
slot_func->bus = bus;
|
| 655 |
|
|
slot_func->device = device;
|
| 656 |
|
|
slot_func->function = function;
|
| 657 |
|
|
slot_func->configured = 0;
|
| 658 |
|
|
dbg("board_added(%p, %p)\n", slot_func, ctrl);
|
| 659 |
|
|
return cpqhp_process_SI(ctrl, slot_func);
|
| 660 |
|
|
}
|
| 661 |
|
|
|
| 662 |
|
|
|
| 663 |
|
|
static int process_SS (struct hotplug_slot *hotplug_slot)
|
| 664 |
|
|
{
|
| 665 |
|
|
struct pci_func *slot_func;
|
| 666 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 667 |
|
|
struct controller *ctrl;
|
| 668 |
|
|
u8 bus;
|
| 669 |
|
|
u8 devfn;
|
| 670 |
|
|
u8 device;
|
| 671 |
|
|
u8 function;
|
| 672 |
|
|
|
| 673 |
|
|
if (slot == NULL)
|
| 674 |
|
|
return -ENODEV;
|
| 675 |
|
|
|
| 676 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 677 |
|
|
|
| 678 |
|
|
ctrl = slot->ctrl;
|
| 679 |
|
|
if (ctrl == NULL)
|
| 680 |
|
|
return -ENODEV;
|
| 681 |
|
|
|
| 682 |
|
|
if (cpqhp_get_bus_dev(ctrl, &bus, &devfn, slot->number) == -1)
|
| 683 |
|
|
return -ENODEV;
|
| 684 |
|
|
|
| 685 |
|
|
device = devfn >> 3;
|
| 686 |
|
|
function = devfn & 0x7;
|
| 687 |
|
|
dbg("bus, dev, fn = %d, %d, %d\n", bus, device, function);
|
| 688 |
|
|
|
| 689 |
|
|
slot_func = cpqhp_slot_find(bus, device, function);
|
| 690 |
|
|
if (!slot_func) {
|
| 691 |
|
|
return -ENODEV;
|
| 692 |
|
|
}
|
| 693 |
|
|
|
| 694 |
|
|
dbg("In power_down_board, slot_func = %p, ctrl = %p\n", slot_func, ctrl);
|
| 695 |
|
|
return cpqhp_process_SS(ctrl, slot_func);
|
| 696 |
|
|
}
|
| 697 |
|
|
|
| 698 |
|
|
|
| 699 |
|
|
static int hardware_test (struct hotplug_slot *hotplug_slot, u32 value)
|
| 700 |
|
|
{
|
| 701 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 702 |
|
|
struct controller *ctrl;
|
| 703 |
|
|
|
| 704 |
|
|
dbg("%s\n", __FUNCTION__);
|
| 705 |
|
|
|
| 706 |
|
|
if (slot == NULL)
|
| 707 |
|
|
return -ENODEV;
|
| 708 |
|
|
|
| 709 |
|
|
ctrl = slot->ctrl;
|
| 710 |
|
|
if (ctrl == NULL)
|
| 711 |
|
|
return -ENODEV;
|
| 712 |
|
|
|
| 713 |
|
|
return cpqhp_hardware_test (ctrl, value);
|
| 714 |
|
|
}
|
| 715 |
|
|
|
| 716 |
|
|
|
| 717 |
|
|
static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
|
| 718 |
|
|
{
|
| 719 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 720 |
|
|
struct controller *ctrl;
|
| 721 |
|
|
|
| 722 |
|
|
if (slot == NULL)
|
| 723 |
|
|
return -ENODEV;
|
| 724 |
|
|
|
| 725 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 726 |
|
|
|
| 727 |
|
|
ctrl = slot->ctrl;
|
| 728 |
|
|
if (ctrl == NULL)
|
| 729 |
|
|
return -ENODEV;
|
| 730 |
|
|
|
| 731 |
|
|
*value = get_slot_enabled(ctrl, slot);
|
| 732 |
|
|
return 0;
|
| 733 |
|
|
}
|
| 734 |
|
|
|
| 735 |
|
|
static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
|
| 736 |
|
|
{
|
| 737 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 738 |
|
|
struct controller *ctrl;
|
| 739 |
|
|
|
| 740 |
|
|
if (slot == NULL)
|
| 741 |
|
|
return -ENODEV;
|
| 742 |
|
|
|
| 743 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 744 |
|
|
|
| 745 |
|
|
ctrl = slot->ctrl;
|
| 746 |
|
|
if (ctrl == NULL)
|
| 747 |
|
|
return -ENODEV;
|
| 748 |
|
|
|
| 749 |
|
|
*value = cpq_get_attention_status(ctrl, slot);
|
| 750 |
|
|
return 0;
|
| 751 |
|
|
}
|
| 752 |
|
|
|
| 753 |
|
|
static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
|
| 754 |
|
|
{
|
| 755 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 756 |
|
|
struct controller *ctrl;
|
| 757 |
|
|
|
| 758 |
|
|
if (slot == NULL)
|
| 759 |
|
|
return -ENODEV;
|
| 760 |
|
|
|
| 761 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 762 |
|
|
|
| 763 |
|
|
ctrl = slot->ctrl;
|
| 764 |
|
|
if (ctrl == NULL)
|
| 765 |
|
|
return -ENODEV;
|
| 766 |
|
|
|
| 767 |
|
|
*value = cpq_get_latch_status (ctrl, slot);
|
| 768 |
|
|
|
| 769 |
|
|
return 0;
|
| 770 |
|
|
}
|
| 771 |
|
|
|
| 772 |
|
|
static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
|
| 773 |
|
|
{
|
| 774 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 775 |
|
|
struct controller *ctrl;
|
| 776 |
|
|
|
| 777 |
|
|
if (slot == NULL)
|
| 778 |
|
|
return -ENODEV;
|
| 779 |
|
|
|
| 780 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 781 |
|
|
|
| 782 |
|
|
ctrl = slot->ctrl;
|
| 783 |
|
|
if (ctrl == NULL)
|
| 784 |
|
|
return -ENODEV;
|
| 785 |
|
|
|
| 786 |
|
|
*value = get_presence_status (ctrl, slot);
|
| 787 |
|
|
|
| 788 |
|
|
return 0;
|
| 789 |
|
|
}
|
| 790 |
|
|
|
| 791 |
|
|
static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
|
| 792 |
|
|
{
|
| 793 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 794 |
|
|
struct controller *ctrl;
|
| 795 |
|
|
|
| 796 |
|
|
if (slot == NULL)
|
| 797 |
|
|
return -ENODEV;
|
| 798 |
|
|
|
| 799 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 800 |
|
|
|
| 801 |
|
|
ctrl = slot->ctrl;
|
| 802 |
|
|
if (ctrl == NULL)
|
| 803 |
|
|
return -ENODEV;
|
| 804 |
|
|
|
| 805 |
|
|
*value = ctrl->speed_capability;
|
| 806 |
|
|
|
| 807 |
|
|
return 0;
|
| 808 |
|
|
}
|
| 809 |
|
|
|
| 810 |
|
|
static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
|
| 811 |
|
|
{
|
| 812 |
|
|
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
|
| 813 |
|
|
struct controller *ctrl;
|
| 814 |
|
|
|
| 815 |
|
|
if (slot == NULL)
|
| 816 |
|
|
return -ENODEV;
|
| 817 |
|
|
|
| 818 |
|
|
dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
|
| 819 |
|
|
|
| 820 |
|
|
ctrl = slot->ctrl;
|
| 821 |
|
|
if (ctrl == NULL)
|
| 822 |
|
|
return -ENODEV;
|
| 823 |
|
|
|
| 824 |
|
|
*value = ctrl->speed;
|
| 825 |
|
|
|
| 826 |
|
|
return 0;
|
| 827 |
|
|
}
|
| 828 |
|
|
|
| 829 |
|
|
static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
| 830 |
|
|
{
|
| 831 |
|
|
u8 num_of_slots = 0;
|
| 832 |
|
|
u8 hp_slot = 0;
|
| 833 |
|
|
u8 device;
|
| 834 |
|
|
u8 rev;
|
| 835 |
|
|
u8 bus_cap;
|
| 836 |
|
|
u16 temp_word;
|
| 837 |
|
|
u16 vendor_id;
|
| 838 |
|
|
u16 subsystem_vid;
|
| 839 |
|
|
u16 subsystem_deviceid;
|
| 840 |
|
|
u32 rc;
|
| 841 |
|
|
struct controller *ctrl;
|
| 842 |
|
|
struct pci_func *func;
|
| 843 |
|
|
|
| 844 |
|
|
// Need to read VID early b/c it's used to differentiate CPQ and INTC discovery
|
| 845 |
|
|
rc = pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor_id);
|
| 846 |
|
|
if (rc || ((vendor_id != PCI_VENDOR_ID_COMPAQ) && (vendor_id != PCI_VENDOR_ID_INTEL))) {
|
| 847 |
|
|
err(msg_HPC_non_compaq_or_intel);
|
| 848 |
|
|
return -ENODEV;
|
| 849 |
|
|
}
|
| 850 |
|
|
dbg("Vendor ID: %x\n", vendor_id);
|
| 851 |
|
|
|
| 852 |
|
|
rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
|
| 853 |
|
|
dbg("revision: %d\n", rev);
|
| 854 |
|
|
if (rc || ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!rev))) {
|
| 855 |
|
|
err(msg_HPC_rev_error);
|
| 856 |
|
|
return -ENODEV;
|
| 857 |
|
|
}
|
| 858 |
|
|
|
| 859 |
|
|
/* Check for the proper subsytem ID's
|
| 860 |
|
|
* Intel uses a different SSID programming model than Compaq.
|
| 861 |
|
|
* For Intel, each SSID bit identifies a PHP capability.
|
| 862 |
|
|
* Also Intel HPC's may have RID=0.
|
| 863 |
|
|
*/
|
| 864 |
|
|
if ((rev > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) {
|
| 865 |
|
|
// TODO: This code can be made to support non-Compaq or Intel subsystem IDs
|
| 866 |
|
|
rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vid);
|
| 867 |
|
|
if (rc) {
|
| 868 |
|
|
err("%s : pci_read_config_word failed\n", __FUNCTION__);
|
| 869 |
|
|
return rc;
|
| 870 |
|
|
}
|
| 871 |
|
|
dbg("Subsystem Vendor ID: %x\n", subsystem_vid);
|
| 872 |
|
|
if ((subsystem_vid != PCI_VENDOR_ID_COMPAQ) && (subsystem_vid != PCI_VENDOR_ID_INTEL)) {
|
| 873 |
|
|
err(msg_HPC_non_compaq_or_intel);
|
| 874 |
|
|
return -ENODEV;
|
| 875 |
|
|
}
|
| 876 |
|
|
|
| 877 |
|
|
ctrl = (struct controller *) kmalloc(sizeof(struct controller), GFP_KERNEL);
|
| 878 |
|
|
if (!ctrl) {
|
| 879 |
|
|
err("%s : out of memory\n", __FUNCTION__);
|
| 880 |
|
|
return -ENOMEM;
|
| 881 |
|
|
}
|
| 882 |
|
|
memset(ctrl, 0, sizeof(struct controller));
|
| 883 |
|
|
|
| 884 |
|
|
rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsystem_deviceid);
|
| 885 |
|
|
if (rc) {
|
| 886 |
|
|
err("%s : pci_read_config_word failed\n", __FUNCTION__);
|
| 887 |
|
|
goto err_free_ctrl;
|
| 888 |
|
|
}
|
| 889 |
|
|
|
| 890 |
|
|
info("Hot Plug Subsystem Device ID: %x\n", subsystem_deviceid);
|
| 891 |
|
|
|
| 892 |
|
|
/* Set Vendor ID, so it can be accessed later from other functions */
|
| 893 |
|
|
ctrl->vendor_id = vendor_id;
|
| 894 |
|
|
|
| 895 |
|
|
switch (subsystem_vid) {
|
| 896 |
|
|
case PCI_VENDOR_ID_COMPAQ:
|
| 897 |
|
|
if (rev >= 0x13) { /* CIOBX */
|
| 898 |
|
|
ctrl->push_flag = 1;
|
| 899 |
|
|
ctrl->slot_switch_type = 1; // Switch is present
|
| 900 |
|
|
ctrl->push_button = 1; // Pushbutton is present
|
| 901 |
|
|
ctrl->pci_config_space = 1; // Index/data access to working registers 0 = not supported, 1 = supported
|
| 902 |
|
|
ctrl->defeature_PHP = 1; // PHP is supported
|
| 903 |
|
|
ctrl->pcix_support = 1; // PCI-X supported
|
| 904 |
|
|
ctrl->pcix_speed_capability = 1;
|
| 905 |
|
|
pci_read_config_byte(pdev, 0x41, &bus_cap);
|
| 906 |
|
|
if (bus_cap & 0x80) {
|
| 907 |
|
|
dbg("bus max supports 133MHz PCI-X\n");
|
| 908 |
|
|
ctrl->speed_capability = PCI_SPEED_133MHz_PCIX;
|
| 909 |
|
|
break;
|
| 910 |
|
|
}
|
| 911 |
|
|
if (bus_cap & 0x40) {
|
| 912 |
|
|
dbg("bus max supports 100MHz PCI-X\n");
|
| 913 |
|
|
ctrl->speed_capability = PCI_SPEED_100MHz_PCIX;
|
| 914 |
|
|
break;
|
| 915 |
|
|
}
|
| 916 |
|
|
if (bus_cap & 20) {
|
| 917 |
|
|
dbg("bus max supports 66MHz PCI-X\n");
|
| 918 |
|
|
ctrl->speed_capability = PCI_SPEED_66MHz_PCIX;
|
| 919 |
|
|
break;
|
| 920 |
|
|
}
|
| 921 |
|
|
if (bus_cap & 10) {
|
| 922 |
|
|
dbg("bus max supports 66MHz PCI\n");
|
| 923 |
|
|
ctrl->speed_capability = PCI_SPEED_66MHz;
|
| 924 |
|
|
break;
|
| 925 |
|
|
}
|
| 926 |
|
|
|
| 927 |
|
|
break;
|
| 928 |
|
|
}
|
| 929 |
|
|
|
| 930 |
|
|
switch (subsystem_deviceid) {
|
| 931 |
|
|
case PCI_SUB_HPC_ID:
|
| 932 |
|
|
/* Original 6500/7000 implementation */
|
| 933 |
|
|
ctrl->slot_switch_type = 1; // Switch is present
|
| 934 |
|
|
ctrl->speed_capability = PCI_SPEED_33MHz;
|
| 935 |
|
|
ctrl->push_button = 0; // No pushbutton
|
| 936 |
|
|
ctrl->pci_config_space = 1; // Index/data access to working registers 0 = not supported, 1 = supported
|
| 937 |
|
|
ctrl->defeature_PHP = 1; // PHP is supported
|
| 938 |
|
|
ctrl->pcix_support = 0; // PCI-X not supported
|
| 939 |
|
|
ctrl->pcix_speed_capability = 0; // N/A since PCI-X not supported
|
| 940 |
|
|
break;
|
| 941 |
|
|
case PCI_SUB_HPC_ID2:
|
| 942 |
|
|
/* First Pushbutton implementation */
|
| 943 |
|
|
ctrl->push_flag = 1;
|
| 944 |
|
|
ctrl->slot_switch_type = 1; // Switch is present
|
| 945 |
|
|
ctrl->speed_capability = PCI_SPEED_33MHz;
|
| 946 |
|
|
ctrl->push_button = 1; // Pushbutton is present
|
| 947 |
|
|
ctrl->pci_config_space = 1; // Index/data access to working registers 0 = not supported, 1 = supported
|
| 948 |
|
|
ctrl->defeature_PHP = 1; // PHP is supported
|
| 949 |
|
|
ctrl->pcix_support = 0; // PCI-X not supported
|
| 950 |
|
|
ctrl->pcix_speed_capability = 0; // N/A since PCI-X not supported
|
| 951 |
|
|
break;
|
| 952 |
|
|
case PCI_SUB_HPC_ID_INTC:
|
| 953 |
|
|
/* Third party (6500/7000) */
|
| 954 |
|
|
ctrl->slot_switch_type = 1; // Switch is present
|
| 955 |
|
|
ctrl->speed_capability = PCI_SPEED_33MHz;
|
| 956 |
|
|
ctrl->push_button = 0; // No pushbutton
|
| 957 |
|
|
ctrl->pci_config_space = 1; // Index/data access to working registers 0 = not supported, 1 = supported
|
| 958 |
|
|
ctrl->defeature_PHP = 1; // PHP is supported
|
| 959 |
|
|
ctrl->pcix_support = 0; // PCI-X not supported
|
| 960 |
|
|
ctrl->pcix_speed_capability = 0; // N/A since PCI-X not supported
|
| 961 |
|
|
break;
|
| 962 |
|
|
case PCI_SUB_HPC_ID3:
|
| 963 |
|
|
/* First 66 Mhz implementation */
|
| 964 |
|
|
ctrl->push_flag = 1;
|
| 965 |
|
|
ctrl->slot_switch_type = 1; // Switch is present
|
| 966 |
|
|
ctrl->speed_capability = PCI_SPEED_66MHz;
|
| 967 |
|
|
ctrl->push_button = 1; // Pushbutton is present
|
| 968 |
|
|
ctrl->pci_config_space = 1; // Index/data access to working registers 0 = not supported, 1 = supported
|
| 969 |
|
|
ctrl->defeature_PHP = 1; // PHP is supported
|
| 970 |
|
|
ctrl->pcix_support = 0; // PCI-X not supported
|
| 971 |
|
|
ctrl->pcix_speed_capability = 0; // N/A since PCI-X not supported
|
| 972 |
|
|
break;
|
| 973 |
|
|
case PCI_SUB_HPC_ID4:
|
| 974 |
|
|
/* First PCI-X implementation, 100MHz */
|
| 975 |
|
|
ctrl->push_flag = 1;
|
| 976 |
|
|
ctrl->slot_switch_type = 1; // Switch is present
|
| 977 |
|
|
ctrl->speed_capability = PCI_SPEED_100MHz_PCIX;
|
| 978 |
|
|
ctrl->push_button = 1; // Pushbutton is present
|
| 979 |
|
|
ctrl->pci_config_space = 1; // Index/data access to working registers 0 = not supported, 1 = supported
|
| 980 |
|
|
ctrl->defeature_PHP = 1; // PHP is supported
|
| 981 |
|
|
ctrl->pcix_support = 1; // PCI-X supported
|
| 982 |
|
|
ctrl->pcix_speed_capability = 0;
|
| 983 |
|
|
break;
|
| 984 |
|
|
default:
|
| 985 |
|
|
err(msg_HPC_not_supported);
|
| 986 |
|
|
rc = -ENODEV;
|
| 987 |
|
|
goto err_free_ctrl;
|
| 988 |
|
|
}
|
| 989 |
|
|
break;
|
| 990 |
|
|
|
| 991 |
|
|
case PCI_VENDOR_ID_INTEL:
|
| 992 |
|
|
/* Check for speed capability (0=33, 1=66) */
|
| 993 |
|
|
if (subsystem_deviceid & 0x0001) {
|
| 994 |
|
|
ctrl->speed_capability = PCI_SPEED_66MHz;
|
| 995 |
|
|
} else {
|
| 996 |
|
|
ctrl->speed_capability = PCI_SPEED_33MHz;
|
| 997 |
|
|
}
|
| 998 |
|
|
|
| 999 |
|
|
/* Check for push button */
|
| 1000 |
|
|
if (subsystem_deviceid & 0x0002) {
|
| 1001 |
|
|
/* no push button */
|
| 1002 |
|
|
ctrl->push_button = 0;
|
| 1003 |
|
|
} else {
|
| 1004 |
|
|
/* push button supported */
|
| 1005 |
|
|
ctrl->push_button = 1;
|
| 1006 |
|
|
}
|
| 1007 |
|
|
|
| 1008 |
|
|
/* Check for slot switch type (0=mechanical, 1=not mechanical) */
|
| 1009 |
|
|
if (subsystem_deviceid & 0x0004) {
|
| 1010 |
|
|
/* no switch */
|
| 1011 |
|
|
ctrl->slot_switch_type = 0;
|
| 1012 |
|
|
} else {
|
| 1013 |
|
|
/* switch */
|
| 1014 |
|
|
ctrl->slot_switch_type = 1;
|
| 1015 |
|
|
}
|
| 1016 |
|
|
|
| 1017 |
|
|
/* PHP Status (0=De-feature PHP, 1=Normal operation) */
|
| 1018 |
|
|
if (subsystem_deviceid & 0x0008) {
|
| 1019 |
|
|
ctrl->defeature_PHP = 1; // PHP supported
|
| 1020 |
|
|
} else {
|
| 1021 |
|
|
ctrl->defeature_PHP = 0; // PHP not supported
|
| 1022 |
|
|
}
|
| 1023 |
|
|
|
| 1024 |
|
|
/* Alternate Base Address Register Interface (0=not supported, 1=supported) */
|
| 1025 |
|
|
if (subsystem_deviceid & 0x0010) {
|
| 1026 |
|
|
ctrl->alternate_base_address = 1; // supported
|
| 1027 |
|
|
} else {
|
| 1028 |
|
|
ctrl->alternate_base_address = 0; // not supported
|
| 1029 |
|
|
}
|
| 1030 |
|
|
|
| 1031 |
|
|
/* PCI Config Space Index (0=not supported, 1=supported) */
|
| 1032 |
|
|
if (subsystem_deviceid & 0x0020) {
|
| 1033 |
|
|
ctrl->pci_config_space = 1; // supported
|
| 1034 |
|
|
} else {
|
| 1035 |
|
|
ctrl->pci_config_space = 0; // not supported
|
| 1036 |
|
|
}
|
| 1037 |
|
|
|
| 1038 |
|
|
/* PCI-X support */
|
| 1039 |
|
|
if (subsystem_deviceid & 0x0080) {
|
| 1040 |
|
|
/* PCI-X capable */
|
| 1041 |
|
|
ctrl->pcix_support = 1;
|
| 1042 |
|
|
/* Frequency of operation in PCI-X mode */
|
| 1043 |
|
|
if (subsystem_deviceid & 0x0040) {
|
| 1044 |
|
|
/* 133MHz PCI-X if bit 7 is 1 */
|
| 1045 |
|
|
ctrl->pcix_speed_capability = 1;
|
| 1046 |
|
|
} else {
|
| 1047 |
|
|
/* 100MHz PCI-X if bit 7 is 1 and bit 0 is 0, */
|
| 1048 |
|
|
/* 66MHz PCI-X if bit 7 is 1 and bit 0 is 1 */
|
| 1049 |
|
|
ctrl->pcix_speed_capability = 0;
|
| 1050 |
|
|
}
|
| 1051 |
|
|
} else {
|
| 1052 |
|
|
/* Conventional PCI */
|
| 1053 |
|
|
ctrl->pcix_support = 0;
|
| 1054 |
|
|
ctrl->pcix_speed_capability = 0;
|
| 1055 |
|
|
}
|
| 1056 |
|
|
break;
|
| 1057 |
|
|
|
| 1058 |
|
|
default:
|
| 1059 |
|
|
err(msg_HPC_not_supported);
|
| 1060 |
|
|
rc = -ENODEV;
|
| 1061 |
|
|
goto err_free_ctrl;
|
| 1062 |
|
|
}
|
| 1063 |
|
|
|
| 1064 |
|
|
} else {
|
| 1065 |
|
|
err(msg_HPC_not_supported);
|
| 1066 |
|
|
return -ENODEV;
|
| 1067 |
|
|
}
|
| 1068 |
|
|
|
| 1069 |
|
|
// Tell the user that we found one.
|
| 1070 |
|
|
info("Initializing the PCI hot plug controller residing on PCI bus %d\n", pdev->bus->number);
|
| 1071 |
|
|
|
| 1072 |
|
|
dbg ("Hotplug controller capabilities:\n");
|
| 1073 |
|
|
dbg (" speed_capability %d\n", ctrl->speed_capability);
|
| 1074 |
|
|
dbg (" slot_switch_type %s\n", ctrl->slot_switch_type == 0 ? "no switch" : "switch present");
|
| 1075 |
|
|
dbg (" defeature_PHP %s\n", ctrl->defeature_PHP == 0 ? "PHP not supported" : "PHP supported");
|
| 1076 |
|
|
dbg (" alternate_base_address %s\n", ctrl->alternate_base_address == 0 ? "not supported" : "supported");
|
| 1077 |
|
|
dbg (" pci_config_space %s\n", ctrl->pci_config_space == 0 ? "not supported" : "supported");
|
| 1078 |
|
|
dbg (" pcix_speed_capability %s\n", ctrl->pcix_speed_capability == 0 ? "not supported" : "supported");
|
| 1079 |
|
|
dbg (" pcix_support %s\n", ctrl->pcix_support == 0 ? "not supported" : "supported");
|
| 1080 |
|
|
|
| 1081 |
|
|
ctrl->pci_dev = pdev;
|
| 1082 |
|
|
ctrl->pci_ops = pdev->bus->ops;
|
| 1083 |
|
|
ctrl->bus = pdev->bus->number;
|
| 1084 |
|
|
ctrl->device = PCI_SLOT(pdev->devfn);
|
| 1085 |
|
|
ctrl->function = PCI_FUNC(pdev->devfn);
|
| 1086 |
|
|
ctrl->rev = rev;
|
| 1087 |
|
|
dbg("bus device function rev: %d %d %d %d\n", ctrl->bus, ctrl->device, ctrl->function, ctrl->rev);
|
| 1088 |
|
|
|
| 1089 |
|
|
init_MUTEX(&ctrl->crit_sect);
|
| 1090 |
|
|
init_waitqueue_head(&ctrl->queue);
|
| 1091 |
|
|
|
| 1092 |
|
|
/* initialize our threads if they haven't already been started up */
|
| 1093 |
|
|
rc = one_time_init();
|
| 1094 |
|
|
if (rc) {
|
| 1095 |
|
|
goto err_free_ctrl;
|
| 1096 |
|
|
}
|
| 1097 |
|
|
|
| 1098 |
|
|
dbg("pdev = %p\n", pdev);
|
| 1099 |
|
|
dbg("pci resource start %lx\n", pci_resource_start(pdev, 0));
|
| 1100 |
|
|
dbg("pci resource len %lx\n", pci_resource_len(pdev, 0));
|
| 1101 |
|
|
|
| 1102 |
|
|
if (!request_mem_region(pci_resource_start(pdev, 0),
|
| 1103 |
|
|
pci_resource_len(pdev, 0), MY_NAME)) {
|
| 1104 |
|
|
err("cannot reserve MMIO region\n");
|
| 1105 |
|
|
rc = -ENOMEM;
|
| 1106 |
|
|
goto err_free_ctrl;
|
| 1107 |
|
|
}
|
| 1108 |
|
|
|
| 1109 |
|
|
ctrl->hpc_reg = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
|
| 1110 |
|
|
if (!ctrl->hpc_reg) {
|
| 1111 |
|
|
err("cannot remap MMIO region %lx @ %lx\n", pci_resource_len(pdev, 0), pci_resource_start(pdev, 0));
|
| 1112 |
|
|
rc = -ENODEV;
|
| 1113 |
|
|
goto err_free_mem_region;
|
| 1114 |
|
|
}
|
| 1115 |
|
|
|
| 1116 |
|
|
// Check for 66Mhz and/or PCI-X operation
|
| 1117 |
|
|
ctrl->speed = get_controller_speed(ctrl);
|
| 1118 |
|
|
|
| 1119 |
|
|
//**************************************************
|
| 1120 |
|
|
//
|
| 1121 |
|
|
// Save configuration headers for this and
|
| 1122 |
|
|
// subordinate PCI buses
|
| 1123 |
|
|
//
|
| 1124 |
|
|
//**************************************************
|
| 1125 |
|
|
|
| 1126 |
|
|
// find the physical slot number of the first hot plug slot
|
| 1127 |
|
|
|
| 1128 |
|
|
// Get slot won't work for devices behind bridges, but
|
| 1129 |
|
|
// in this case it will always be called for the "base"
|
| 1130 |
|
|
// bus/dev/func of a slot.
|
| 1131 |
|
|
// CS: this is leveraging the PCIIRQ routing code from the kernel (pci-pc.c: get_irq_routing_table)
|
| 1132 |
|
|
rc = get_slot_mapping(ctrl->pci_ops, pdev->bus->number, (readb(ctrl->hpc_reg + SLOT_MASK) >> 4), &(ctrl->first_slot));
|
| 1133 |
|
|
dbg("get_slot_mapping: first_slot = %d, returned = %d\n", ctrl->first_slot, rc);
|
| 1134 |
|
|
if (rc) {
|
| 1135 |
|
|
err(msg_initialization_err, rc);
|
| 1136 |
|
|
goto err_iounmap;
|
| 1137 |
|
|
}
|
| 1138 |
|
|
|
| 1139 |
|
|
// Store PCI Config Space for all devices on this bus
|
| 1140 |
|
|
rc = cpqhp_save_config(ctrl, ctrl->bus, readb(ctrl->hpc_reg + SLOT_MASK));
|
| 1141 |
|
|
if (rc) {
|
| 1142 |
|
|
err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc);
|
| 1143 |
|
|
goto err_iounmap;
|
| 1144 |
|
|
}
|
| 1145 |
|
|
|
| 1146 |
|
|
/*
|
| 1147 |
|
|
* Get IO, memory, and IRQ resources for new devices
|
| 1148 |
|
|
*/
|
| 1149 |
|
|
// The next line is required for cpqhp_find_available_resources
|
| 1150 |
|
|
ctrl->interrupt = pdev->irq;
|
| 1151 |
|
|
|
| 1152 |
|
|
rc = cpqhp_find_available_resources(ctrl, cpqhp_rom_start);
|
| 1153 |
|
|
ctrl->add_support = !rc;
|
| 1154 |
|
|
if (rc) {
|
| 1155 |
|
|
dbg("cpqhp_find_available_resources = 0x%x\n", rc);
|
| 1156 |
|
|
err("unable to locate PCI configuration resources for hot plug add.\n");
|
| 1157 |
|
|
goto err_iounmap;
|
| 1158 |
|
|
}
|
| 1159 |
|
|
|
| 1160 |
|
|
/*
|
| 1161 |
|
|
* Finish setting up the hot plug ctrl device
|
| 1162 |
|
|
*/
|
| 1163 |
|
|
ctrl->slot_device_offset = readb(ctrl->hpc_reg + SLOT_MASK) >> 4;
|
| 1164 |
|
|
dbg("NumSlots %d \n", ctrl->slot_device_offset);
|
| 1165 |
|
|
|
| 1166 |
|
|
ctrl->next_event = 0;
|
| 1167 |
|
|
|
| 1168 |
|
|
/* Setup the slot information structures */
|
| 1169 |
|
|
rc = ctrl_slot_setup(ctrl, smbios_start, smbios_table);
|
| 1170 |
|
|
if (rc) {
|
| 1171 |
|
|
err(msg_initialization_err, 6);
|
| 1172 |
|
|
err("%s: unable to save PCI configuration data, error %d\n", __FUNCTION__, rc);
|
| 1173 |
|
|
goto err_iounmap;
|
| 1174 |
|
|
}
|
| 1175 |
|
|
|
| 1176 |
|
|
/* Mask all general input interrupts */
|
| 1177 |
|
|
writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_MASK);
|
| 1178 |
|
|
|
| 1179 |
|
|
/* set up the interrupt */
|
| 1180 |
|
|
dbg("HPC interrupt = %d \n", ctrl->interrupt);
|
| 1181 |
|
|
if (request_irq(ctrl->interrupt,
|
| 1182 |
|
|
(void (*)(int, void *, struct pt_regs *)) &cpqhp_ctrl_intr,
|
| 1183 |
|
|
SA_SHIRQ, MY_NAME, ctrl)) {
|
| 1184 |
|
|
err("Can't get irq %d for the hotplug pci controller\n", ctrl->interrupt);
|
| 1185 |
|
|
rc = -ENODEV;
|
| 1186 |
|
|
goto err_iounmap;
|
| 1187 |
|
|
}
|
| 1188 |
|
|
|
| 1189 |
|
|
/* Enable Shift Out interrupt and clear it, also enable SERR on power fault */
|
| 1190 |
|
|
temp_word = readw(ctrl->hpc_reg + MISC);
|
| 1191 |
|
|
temp_word |= 0x4006;
|
| 1192 |
|
|
writew(temp_word, ctrl->hpc_reg + MISC);
|
| 1193 |
|
|
|
| 1194 |
|
|
// Changed 05/05/97 to clear all interrupts at start
|
| 1195 |
|
|
writel(0xFFFFFFFFL, ctrl->hpc_reg + INT_INPUT_CLEAR);
|
| 1196 |
|
|
|
| 1197 |
|
|
ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
|
| 1198 |
|
|
|
| 1199 |
|
|
writel(0x0L, ctrl->hpc_reg + INT_MASK);
|
| 1200 |
|
|
|
| 1201 |
|
|
if (!cpqhp_ctrl_list) {
|
| 1202 |
|
|
cpqhp_ctrl_list = ctrl;
|
| 1203 |
|
|
ctrl->next = NULL;
|
| 1204 |
|
|
} else {
|
| 1205 |
|
|
ctrl->next = cpqhp_ctrl_list;
|
| 1206 |
|
|
cpqhp_ctrl_list = ctrl;
|
| 1207 |
|
|
}
|
| 1208 |
|
|
|
| 1209 |
|
|
// turn off empty slots here unless command line option "ON" set
|
| 1210 |
|
|
// Wait for exclusive access to hardware
|
| 1211 |
|
|
down(&ctrl->crit_sect);
|
| 1212 |
|
|
|
| 1213 |
|
|
num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
|
| 1214 |
|
|
|
| 1215 |
|
|
// find first device number for the ctrl
|
| 1216 |
|
|
device = readb(ctrl->hpc_reg + SLOT_MASK) >> 4;
|
| 1217 |
|
|
|
| 1218 |
|
|
while (num_of_slots) {
|
| 1219 |
|
|
dbg("num_of_slots: %d\n", num_of_slots);
|
| 1220 |
|
|
func = cpqhp_slot_find(ctrl->bus, device, 0);
|
| 1221 |
|
|
if (!func)
|
| 1222 |
|
|
break;
|
| 1223 |
|
|
|
| 1224 |
|
|
hp_slot = func->device - ctrl->slot_device_offset;
|
| 1225 |
|
|
dbg("hp_slot: %d\n", hp_slot);
|
| 1226 |
|
|
|
| 1227 |
|
|
// We have to save the presence info for these slots
|
| 1228 |
|
|
temp_word = ctrl->ctrl_int_comp >> 16;
|
| 1229 |
|
|
func->presence_save = (temp_word >> hp_slot) & 0x01;
|
| 1230 |
|
|
func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
|
| 1231 |
|
|
|
| 1232 |
|
|
if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) {
|
| 1233 |
|
|
func->switch_save = 0;
|
| 1234 |
|
|
} else {
|
| 1235 |
|
|
func->switch_save = 0x10;
|
| 1236 |
|
|
}
|
| 1237 |
|
|
|
| 1238 |
|
|
if (!power_mode) {
|
| 1239 |
|
|
if (!func->is_a_board) {
|
| 1240 |
|
|
green_LED_off (ctrl, hp_slot);
|
| 1241 |
|
|
slot_disable (ctrl, hp_slot);
|
| 1242 |
|
|
}
|
| 1243 |
|
|
}
|
| 1244 |
|
|
|
| 1245 |
|
|
device++;
|
| 1246 |
|
|
num_of_slots--;
|
| 1247 |
|
|
}
|
| 1248 |
|
|
|
| 1249 |
|
|
if (!power_mode) {
|
| 1250 |
|
|
set_SOGO(ctrl);
|
| 1251 |
|
|
// Wait for SOBS to be unset
|
| 1252 |
|
|
wait_for_ctrl_irq (ctrl);
|
| 1253 |
|
|
}
|
| 1254 |
|
|
|
| 1255 |
|
|
rc = init_SERR(ctrl);
|
| 1256 |
|
|
if (rc) {
|
| 1257 |
|
|
err("init_SERR failed\n");
|
| 1258 |
|
|
up(&ctrl->crit_sect);
|
| 1259 |
|
|
goto err_free_irq;
|
| 1260 |
|
|
}
|
| 1261 |
|
|
|
| 1262 |
|
|
// Done with exclusive hardware access
|
| 1263 |
|
|
up(&ctrl->crit_sect);
|
| 1264 |
|
|
|
| 1265 |
|
|
rc = cpqhp_proc_create_ctrl (ctrl);
|
| 1266 |
|
|
if (rc) {
|
| 1267 |
|
|
err("cpqhp_proc_create_ctrl failed\n");
|
| 1268 |
|
|
goto err_free_irq;
|
| 1269 |
|
|
}
|
| 1270 |
|
|
|
| 1271 |
|
|
return 0;
|
| 1272 |
|
|
|
| 1273 |
|
|
err_free_irq:
|
| 1274 |
|
|
free_irq(ctrl->interrupt, ctrl);
|
| 1275 |
|
|
err_iounmap:
|
| 1276 |
|
|
iounmap(ctrl->hpc_reg);
|
| 1277 |
|
|
err_free_mem_region:
|
| 1278 |
|
|
release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
|
| 1279 |
|
|
err_free_ctrl:
|
| 1280 |
|
|
kfree(ctrl);
|
| 1281 |
|
|
return rc;
|
| 1282 |
|
|
}
|
| 1283 |
|
|
|
| 1284 |
|
|
|
| 1285 |
|
|
static int one_time_init(void)
|
| 1286 |
|
|
{
|
| 1287 |
|
|
int loop;
|
| 1288 |
|
|
int retval = 0;
|
| 1289 |
|
|
static int initialized = 0;
|
| 1290 |
|
|
|
| 1291 |
|
|
if (initialized)
|
| 1292 |
|
|
return 0;
|
| 1293 |
|
|
|
| 1294 |
|
|
power_mode = 0;
|
| 1295 |
|
|
|
| 1296 |
|
|
retval = pci_print_IRQ_route();
|
| 1297 |
|
|
if (retval)
|
| 1298 |
|
|
goto error;
|
| 1299 |
|
|
|
| 1300 |
|
|
dbg("Initialize + Start the notification mechanism \n");
|
| 1301 |
|
|
|
| 1302 |
|
|
retval = cpqhp_event_start_thread();
|
| 1303 |
|
|
if (retval)
|
| 1304 |
|
|
goto error;
|
| 1305 |
|
|
|
| 1306 |
|
|
dbg("Initialize slot lists\n");
|
| 1307 |
|
|
for (loop = 0; loop < 256; loop++) {
|
| 1308 |
|
|
cpqhp_slot_list[loop] = NULL;
|
| 1309 |
|
|
}
|
| 1310 |
|
|
|
| 1311 |
|
|
// FIXME: We also need to hook the NMI handler eventually.
|
| 1312 |
|
|
// this also needs to be worked with Christoph
|
| 1313 |
|
|
// register_NMI_handler();
|
| 1314 |
|
|
|
| 1315 |
|
|
// Map rom address
|
| 1316 |
|
|
cpqhp_rom_start = ioremap(ROM_PHY_ADDR, ROM_PHY_LEN);
|
| 1317 |
|
|
if (!cpqhp_rom_start) {
|
| 1318 |
|
|
err ("Could not ioremap memory region for ROM\n");
|
| 1319 |
|
|
retval = -EIO;;
|
| 1320 |
|
|
goto error;
|
| 1321 |
|
|
}
|
| 1322 |
|
|
|
| 1323 |
|
|
/* Now, map the int15 entry point if we are on compaq specific hardware */
|
| 1324 |
|
|
compaq_nvram_init(cpqhp_rom_start);
|
| 1325 |
|
|
|
| 1326 |
|
|
/* Map smbios table entry point structure */
|
| 1327 |
|
|
smbios_table = detect_SMBIOS_pointer(cpqhp_rom_start, cpqhp_rom_start + ROM_PHY_LEN);
|
| 1328 |
|
|
if (!smbios_table) {
|
| 1329 |
|
|
err ("Could not find the SMBIOS pointer in memory\n");
|
| 1330 |
|
|
retval = -EIO;;
|
| 1331 |
|
|
goto error;
|
| 1332 |
|
|
}
|
| 1333 |
|
|
|
| 1334 |
|
|
smbios_start = ioremap(readl(smbios_table + ST_ADDRESS), readw(smbios_table + ST_LENGTH));
|
| 1335 |
|
|
if (!smbios_start) {
|
| 1336 |
|
|
err ("Could not ioremap memory region taken from SMBIOS values\n");
|
| 1337 |
|
|
retval = -EIO;;
|
| 1338 |
|
|
goto error;
|
| 1339 |
|
|
}
|
| 1340 |
|
|
|
| 1341 |
|
|
retval = cpqhp_proc_init_ctrl();
|
| 1342 |
|
|
if (retval)
|
| 1343 |
|
|
goto error;
|
| 1344 |
|
|
|
| 1345 |
|
|
initialized = 1;
|
| 1346 |
|
|
|
| 1347 |
|
|
return retval;
|
| 1348 |
|
|
|
| 1349 |
|
|
error:
|
| 1350 |
|
|
if (cpqhp_rom_start)
|
| 1351 |
|
|
iounmap(cpqhp_rom_start);
|
| 1352 |
|
|
if (smbios_start)
|
| 1353 |
|
|
iounmap(smbios_start);
|
| 1354 |
|
|
|
| 1355 |
|
|
return retval;
|
| 1356 |
|
|
}
|
| 1357 |
|
|
|
| 1358 |
|
|
|
| 1359 |
|
|
static void unload_cpqphpd(void)
|
| 1360 |
|
|
{
|
| 1361 |
|
|
struct pci_func *next;
|
| 1362 |
|
|
struct pci_func *TempSlot;
|
| 1363 |
|
|
int loop;
|
| 1364 |
|
|
u32 rc;
|
| 1365 |
|
|
struct controller *ctrl;
|
| 1366 |
|
|
struct controller *tctrl;
|
| 1367 |
|
|
struct pci_resource *res;
|
| 1368 |
|
|
struct pci_resource *tres;
|
| 1369 |
|
|
|
| 1370 |
|
|
rc = compaq_nvram_store(cpqhp_rom_start);
|
| 1371 |
|
|
|
| 1372 |
|
|
ctrl = cpqhp_ctrl_list;
|
| 1373 |
|
|
|
| 1374 |
|
|
while (ctrl) {
|
| 1375 |
|
|
cpqhp_proc_remove_ctrl (ctrl);
|
| 1376 |
|
|
|
| 1377 |
|
|
if (ctrl->hpc_reg) {
|
| 1378 |
|
|
u16 misc;
|
| 1379 |
|
|
rc = read_slot_enable (ctrl);
|
| 1380 |
|
|
|
| 1381 |
|
|
writeb(0, ctrl->hpc_reg + SLOT_SERR);
|
| 1382 |
|
|
writel(0xFFFFFFC0L | ~rc, ctrl->hpc_reg + INT_MASK);
|
| 1383 |
|
|
|
| 1384 |
|
|
misc = readw(ctrl->hpc_reg + MISC);
|
| 1385 |
|
|
misc &= 0xFFFD;
|
| 1386 |
|
|
writew(misc, ctrl->hpc_reg + MISC);
|
| 1387 |
|
|
}
|
| 1388 |
|
|
|
| 1389 |
|
|
ctrl_slot_cleanup(ctrl);
|
| 1390 |
|
|
|
| 1391 |
|
|
res = ctrl->io_head;
|
| 1392 |
|
|
while (res) {
|
| 1393 |
|
|
tres = res;
|
| 1394 |
|
|
res = res->next;
|
| 1395 |
|
|
kfree(tres);
|
| 1396 |
|
|
}
|
| 1397 |
|
|
|
| 1398 |
|
|
res = ctrl->mem_head;
|
| 1399 |
|
|
while (res) {
|
| 1400 |
|
|
tres = res;
|
| 1401 |
|
|
res = res->next;
|
| 1402 |
|
|
kfree(tres);
|
| 1403 |
|
|
}
|
| 1404 |
|
|
|
| 1405 |
|
|
res = ctrl->p_mem_head;
|
| 1406 |
|
|
while (res) {
|
| 1407 |
|
|
tres = res;
|
| 1408 |
|
|
res = res->next;
|
| 1409 |
|
|
kfree(tres);
|
| 1410 |
|
|
}
|
| 1411 |
|
|
|
| 1412 |
|
|
res = ctrl->bus_head;
|
| 1413 |
|
|
while (res) {
|
| 1414 |
|
|
tres = res;
|
| 1415 |
|
|
res = res->next;
|
| 1416 |
|
|
kfree(tres);
|
| 1417 |
|
|
}
|
| 1418 |
|
|
|
| 1419 |
|
|
tctrl = ctrl;
|
| 1420 |
|
|
ctrl = ctrl->next;
|
| 1421 |
|
|
kfree(tctrl);
|
| 1422 |
|
|
}
|
| 1423 |
|
|
|
| 1424 |
|
|
for (loop = 0; loop < 256; loop++) {
|
| 1425 |
|
|
next = cpqhp_slot_list[loop];
|
| 1426 |
|
|
while (next != NULL) {
|
| 1427 |
|
|
res = next->io_head;
|
| 1428 |
|
|
while (res) {
|
| 1429 |
|
|
tres = res;
|
| 1430 |
|
|
res = res->next;
|
| 1431 |
|
|
kfree(tres);
|
| 1432 |
|
|
}
|
| 1433 |
|
|
|
| 1434 |
|
|
res = next->mem_head;
|
| 1435 |
|
|
while (res) {
|
| 1436 |
|
|
tres = res;
|
| 1437 |
|
|
res = res->next;
|
| 1438 |
|
|
kfree(tres);
|
| 1439 |
|
|
}
|
| 1440 |
|
|
|
| 1441 |
|
|
res = next->p_mem_head;
|
| 1442 |
|
|
while (res) {
|
| 1443 |
|
|
tres = res;
|
| 1444 |
|
|
res = res->next;
|
| 1445 |
|
|
kfree(tres);
|
| 1446 |
|
|
}
|
| 1447 |
|
|
|
| 1448 |
|
|
res = next->bus_head;
|
| 1449 |
|
|
while (res) {
|
| 1450 |
|
|
tres = res;
|
| 1451 |
|
|
res = res->next;
|
| 1452 |
|
|
kfree(tres);
|
| 1453 |
|
|
}
|
| 1454 |
|
|
|
| 1455 |
|
|
TempSlot = next;
|
| 1456 |
|
|
next = next->next;
|
| 1457 |
|
|
kfree(TempSlot);
|
| 1458 |
|
|
}
|
| 1459 |
|
|
}
|
| 1460 |
|
|
|
| 1461 |
|
|
remove_proc_entry("hpc", 0);
|
| 1462 |
|
|
|
| 1463 |
|
|
// Stop the notification mechanism
|
| 1464 |
|
|
cpqhp_event_stop_thread();
|
| 1465 |
|
|
|
| 1466 |
|
|
//unmap the rom address
|
| 1467 |
|
|
if (cpqhp_rom_start)
|
| 1468 |
|
|
iounmap(cpqhp_rom_start);
|
| 1469 |
|
|
if (smbios_start)
|
| 1470 |
|
|
iounmap(smbios_start);
|
| 1471 |
|
|
}
|
| 1472 |
|
|
|
| 1473 |
|
|
|
| 1474 |
|
|
|
| 1475 |
|
|
static struct pci_device_id hpcd_pci_tbl[] __devinitdata = {
|
| 1476 |
|
|
{
|
| 1477 |
|
|
/* handle any PCI Hotplug controller */
|
| 1478 |
|
|
class: ((PCI_CLASS_SYSTEM_PCI_HOTPLUG << 8) | 0x00),
|
| 1479 |
|
|
class_mask: ~0,
|
| 1480 |
|
|
|
| 1481 |
|
|
/* no matter who makes it */
|
| 1482 |
|
|
vendor: PCI_ANY_ID,
|
| 1483 |
|
|
device: PCI_ANY_ID,
|
| 1484 |
|
|
subvendor: PCI_ANY_ID,
|
| 1485 |
|
|
subdevice: PCI_ANY_ID,
|
| 1486 |
|
|
|
| 1487 |
|
|
}, { /* end: all zeroes */ }
|
| 1488 |
|
|
};
|
| 1489 |
|
|
|
| 1490 |
|
|
MODULE_DEVICE_TABLE(pci, hpcd_pci_tbl);
|
| 1491 |
|
|
|
| 1492 |
|
|
|
| 1493 |
|
|
|
| 1494 |
|
|
static struct pci_driver cpqhpc_driver = {
|
| 1495 |
|
|
name: "pci_hotplug",
|
| 1496 |
|
|
id_table: hpcd_pci_tbl,
|
| 1497 |
|
|
probe: cpqhpc_probe,
|
| 1498 |
|
|
/* remove: cpqhpc_remove_one, */
|
| 1499 |
|
|
};
|
| 1500 |
|
|
|
| 1501 |
|
|
|
| 1502 |
|
|
|
| 1503 |
|
|
static int __init cpqhpc_init(void)
|
| 1504 |
|
|
{
|
| 1505 |
|
|
int result;
|
| 1506 |
|
|
|
| 1507 |
|
|
cpqhp_debug = debug;
|
| 1508 |
|
|
|
| 1509 |
|
|
result = pci_module_init(&cpqhpc_driver);
|
| 1510 |
|
|
dbg("pci_module_init = %d\n", result);
|
| 1511 |
|
|
if (result)
|
| 1512 |
|
|
return result;
|
| 1513 |
|
|
info (DRIVER_DESC " version: " DRIVER_VERSION "\n");
|
| 1514 |
|
|
return 0;
|
| 1515 |
|
|
}
|
| 1516 |
|
|
|
| 1517 |
|
|
|
| 1518 |
|
|
static void __exit cpqhpc_cleanup(void)
|
| 1519 |
|
|
{
|
| 1520 |
|
|
dbg("cleaning up proc entries\n");
|
| 1521 |
|
|
cpqhp_proc_destroy_ctrl();
|
| 1522 |
|
|
|
| 1523 |
|
|
dbg("unload_cpqphpd()\n");
|
| 1524 |
|
|
unload_cpqphpd();
|
| 1525 |
|
|
|
| 1526 |
|
|
dbg("pci_unregister_driver\n");
|
| 1527 |
|
|
pci_unregister_driver(&cpqhpc_driver);
|
| 1528 |
|
|
}
|
| 1529 |
|
|
|
| 1530 |
|
|
|
| 1531 |
|
|
module_init(cpqhpc_init);
|
| 1532 |
|
|
module_exit(cpqhpc_cleanup);
|
| 1533 |
|
|
|
| 1534 |
|
|
|
