| 1 | /* $Id: emu10k1-joy.c,v 1.1 2000/04/23 14:55:43 ktk Exp $ */
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| 2 |
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| 3 |
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| 4 | /*
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| 5 | **********************************************************************
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| 6 | * emu10k1-joy.c - Creative EMU10K1 Joystick port driver
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| 7 | * Copyright 2000 Rui Sousa.
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| 8 | *
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| 9 | **********************************************************************
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| 10 | *
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| 11 | * Date Author Summary of changes
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| 12 | * ---- ------ ------------------
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| 13 | * April 1, 2000 Rui Sousa initial version
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| 14 | *
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| 15 | **********************************************************************
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| 16 | *
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| 17 | * This program is free software; you can redistribute it and/or
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| 18 | * modify it under the terms of the GNU General Public License as
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| 19 | * published by the Free Software Foundation; either version 2 of
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| 20 | * the License, or (at your option) any later version.
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| 21 | *
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| 22 | * This program is distributed in the hope that it will be useful,
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| 23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 25 | * GNU General Public License for more details.
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| 26 | *
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| 27 | * You should have received a copy of the GNU General Public
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| 28 | * License along with this program; if not, write to the Free
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| 29 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
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| 30 | * USA.
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| 31 | *
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| 32 | **********************************************************************/
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| 33 |
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| 34 | #include <linux/module.h>
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| 35 | #include <linux/init.h>
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| 36 | #include <linux/pci.h>
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| 37 | #include <linux/malloc.h>
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| 38 | #include <linux/ioport.h>
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| 39 | #include <linux/list.h>
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| 40 |
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| 41 | #include <emu_wrapper.h>
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| 42 |
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| 43 | #define DRIVER_VERSION "0.1"
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| 44 |
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| 45 | #ifndef PCI_VENDOR_ID_CREATIVE
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| 46 | #define PCI_VENDOR_ID_CREATIVE 0x1102
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| 47 | #endif
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| 48 |
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| 49 | #ifndef PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK
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| 50 | #define PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK 0x7002
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| 51 | #endif
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| 52 |
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| 53 | #define EMU10K1_JOYSTICK_EXTENT 0x8 /* 8 byte I/O space */
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| 54 |
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| 55 | #define NR_DEV 5
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| 56 |
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| 57 | static int io[NR_DEV] = { 0, };
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| 58 |
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| 59 | enum {
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| 60 | EMU10K1_JOYSTICK = 0
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| 61 | };
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| 62 |
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| 63 | static char *card_names[] = {
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| 64 | "EMU10K1 Joystick Port"
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| 65 | };
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| 66 |
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| 67 | static struct pci_device_id emu10k1_joy_pci_tbl[] __devinitdata = {
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| 68 | {PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_EMU10K1_JOYSTICK,
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| 69 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, EMU10K1_JOYSTICK},
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| 70 | {0,}
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| 71 | };
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| 72 |
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| 73 | MODULE_DEVICE_TABLE(pci, emu10k1_joy_pci_tbl);
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| 74 |
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| 75 | struct emu10k1_joy_card {
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| 76 | struct list_head list;
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| 77 |
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| 78 | struct pci_dev *pci_dev;
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| 79 | unsigned long iobase;
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| 80 | int addr_changed;
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| 81 | };
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| 82 |
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| 83 | static LIST_HEAD(emu10k1_joy_devs);
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| 84 | static unsigned int devindex = 0;
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| 85 |
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| 86 | /* Driver initialization routine */
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| 87 | static int __devinit emu10k1_joy_probe(struct pci_dev *pci_dev, const struct pci_device_id *pci_id)
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| 88 | {
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| 89 | struct emu10k1_joy_card *card;
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| 90 | u8 chiprev;
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| 91 |
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| 92 | if ((card = kmalloc(sizeof(struct emu10k1_joy_card), GFP_KERNEL)) == NULL) {
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| 93 | printk(KERN_ERR "emu10k1-joy: out of memory\n");
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| 94 | return -ENOMEM;
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| 95 | }
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| 96 | memset(card, 0, sizeof(struct emu10k1_joy_card));
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| 97 |
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| 98 | #if LINUX_VERSION_CODE > 0x020320
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| 99 | if (pci_enable_device(pci_dev)) {
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| 100 | printk(KERN_ERR "emu10k1-joy: couldn't enable device\n");
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| 101 | kfree(card);
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| 102 | return -ENODEV;
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| 103 | }
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| 104 |
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| 105 | card->iobase = pci_dev->resource[0].start;
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| 106 |
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| 107 | if (request_region(card->iobase, EMU10K1_JOYSTICK_EXTENT, card_names[pci_id->driver_data])
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| 108 | == NULL) {
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| 109 | printk(KERN_ERR "emu10k1-joy: %s IO space in use\n",
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| 110 | card_names[pci_id->driver_data]);
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| 111 | kfree(card);
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| 112 | return -ENODEV;
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| 113 | }
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| 114 |
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| 115 | pci_dev->driver_data = card;
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| 116 | #else
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| 117 | card->iobase = pci_dev->base_address[0] & PCI_BASE_ADDRESS_IO_MASK;
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| 118 |
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| 119 | if (check_region(card->iobase, EMU10K1_JOYSTICK_EXTENT)) {
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| 120 | printk(KERN_ERR "emu10k1-joy: IO space in use\n");
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| 121 | kfree(card);
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| 122 | return -ENODEV;
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| 123 | }
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| 124 |
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| 125 | request_region(card->iobase, EMU10K1_JOYSTICK_EXTENT, card_names[pci_id->driver_data]);
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| 126 | #endif
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| 127 |
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| 128 | pci_read_config_byte(pci_dev, PCI_REVISION_ID, &chiprev);
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| 129 |
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| 130 | printk(KERN_INFO "emu10k1-joy: %s rev %d found at IO 0x%04lx\n",
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| 131 | card_names[pci_id->driver_data], chiprev, card->iobase);
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| 132 |
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| 133 | if (io[devindex]) {
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| 134 | if ((io[devindex] & ~0x18) != 0x200) {
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| 135 | printk(KERN_ERR "emu10k1-joy: invalid io value\n");
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| 136 | release_region(card->iobase, EMU10K1_JOYSTICK_EXTENT);
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| 137 | kfree(card);
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| 138 | return -ENODEV;
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| 139 | }
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| 140 |
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| 141 | card->addr_changed = 1;
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| 142 | pci_write_config_dword(pci_dev, PCI_BASE_ADDRESS_0, io[devindex]);
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| 143 | printk(KERN_INFO "emu10k1-joy: IO ports mirrored at 0x%03x\n", io[devindex]);
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| 144 | }
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| 145 |
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| 146 | list_add(&card->list, &emu10k1_joy_devs);
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| 147 | devindex++;
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| 148 |
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| 149 | return 0;
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| 150 | }
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| 151 |
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| 152 | static void __devexit emu10k1_joy_remove(struct pci_dev *pci_dev)
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| 153 | {
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| 154 |
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| 155 | #if LINUX_VERSION_CODE > 0x020320
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| 156 | struct emu10k1_joy_card *card = pci_dev->driver_data;
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| 157 | #else
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| 158 | struct emu10k1_joy_card *card =
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| 159 |
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| 160 | list_entry(emu10k1_joy_devs.next, struct emu10k1_joy_card, list);
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| 161 | #endif
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| 162 | if(card->addr_changed)
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| 163 | pci_write_config_dword(pci_dev, PCI_BASE_ADDRESS_0, card->iobase);
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| 164 |
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| 165 | release_region(card->iobase, EMU10K1_JOYSTICK_EXTENT);
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| 166 |
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| 167 | list_del(&card->list);
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| 168 | kfree(card);
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| 169 | return;
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| 170 | }
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| 171 |
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| 172 | MODULE_PARM(io, "1-" __MODULE_STRING(NR_DEV) "i");
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| 173 | MODULE_PARM_DESC(io, "sets joystick port address");
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| 174 | MODULE_AUTHOR("Rui Sousa (Email to: emu10k1-devel@opensource.creative.com)");
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| 175 | MODULE_DESCRIPTION("Creative EMU10K1 PCI Joystick Port v" DRIVER_VERSION
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| 176 | "\nCopyright (C) 2000 Rui Sousa");
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| 177 |
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| 178 | static struct pci_driver emu10k1_joy_pci_driver = {
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| 179 | name:"emu10k1 joystick",
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| 180 | id_table:emu10k1_joy_pci_tbl,
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| 181 | probe:emu10k1_joy_probe,
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| 182 | remove:emu10k1_joy_remove,
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| 183 | };
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| 184 |
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| 185 | #if LINUX_VERSION_CODE > 0x020320
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| 186 | static int __init emu10k1_joy_init_module(void)
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| 187 | {
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| 188 | printk(KERN_INFO "Creative EMU10K1 PCI Joystick Port, version " DRIVER_VERSION ", " __TIME__
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| 189 | " " __DATE__ "\n");
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| 190 |
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| 191 | return pci_module_init(&emu10k1_joy_pci_driver);
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| 192 | }
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| 193 |
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| 194 | static void __exit emu10k1_joy_cleanup_module(void)
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| 195 | {
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| 196 | pci_unregister_driver(&emu10k1_joy_pci_driver);
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| 197 | return;
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| 198 | }
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| 199 |
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| 200 | #else
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| 201 | static int __init emu10k1_joy_init_module(void)
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| 202 | {
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| 203 | struct pci_dev *dev = NULL;
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| 204 | const struct pci_device_id *pci_id = emu10k1_joy_pci_driver.id_table;
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| 205 |
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| 206 | printk(KERN_INFO "Creative EMU10K1 PCI Joystick Port, version " DRIVER_VERSION ", " __TIME__
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| 207 | " " __DATE__ "\n");
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| 208 |
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| 209 | if (!pci_present())
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| 210 | return -ENODEV;
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| 211 |
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| 212 | while (pci_id->vendor) {
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| 213 | while ((dev = pci_find_device(pci_id->vendor, pci_id->device, dev)))
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| 214 | emu10k1_joy_probe(dev, pci_id);
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| 215 |
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| 216 | pci_id++;
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| 217 | }
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| 218 | return 0;
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| 219 | }
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| 220 |
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| 221 | static void __exit emu10k1_joy_cleanup_module(void)
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| 222 | {
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| 223 | struct emu10k1_joy_card *card;
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| 224 |
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| 225 | while (!list_empty(&emu10k1_joy_devs)) {
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| 226 | card = list_entry(emu10k1_joy_devs.next, struct emu10k1_joy_card, list);
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| 227 |
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| 228 | emu10k1_joy_remove(card->pci_dev);
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| 229 | }
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| 230 | return;
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| 231 | }
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| 232 | #endif
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| 233 |
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| 234 | module_init(emu10k1_joy_init_module);
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| 235 | module_exit(emu10k1_joy_cleanup_module);
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