amd74xx: Omit PCI_REVISION_ID read
[linux-2.6] / drivers / ide / pci / generic.c
1 /*
2  *  linux/drivers/ide/pci/generic.c     Version 0.11    December 30, 2002
3  *
4  *  Copyright (C) 2001-2002     Andre Hedrick <andre@linux-ide.org>
5  *  Portions (C) Copyright 2002  Red Hat Inc <alan@redhat.com>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the
9  * Free Software Foundation; either version 2, or (at your option) any
10  * later version.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  *
17  * For the avoidance of doubt the "preferred form" of this code is one which
18  * is in an open non patent encumbered format. Where cryptographic key signing
19  * forms part of the process of creating an executable the information
20  * including keys needed to generate an equivalently functional executable
21  * are deemed to be part of the source code.
22  */
23
24 #include <linux/types.h>
25 #include <linux/module.h>
26 #include <linux/kernel.h>
27 #include <linux/delay.h>
28 #include <linux/timer.h>
29 #include <linux/mm.h>
30 #include <linux/ioport.h>
31 #include <linux/blkdev.h>
32 #include <linux/hdreg.h>
33 #include <linux/pci.h>
34 #include <linux/ide.h>
35 #include <linux/init.h>
36
37 #include <asm/io.h>
38
39 static int ide_generic_all;             /* Set to claim all devices */
40
41 /*
42  * the module_param_named() was added for the modular case
43  * the __setup() is left as compatibility for existing setups
44  */
45 #ifndef MODULE
46 static int __init ide_generic_all_on(char *unused)
47 {
48         ide_generic_all = 1;
49         printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n");
50         return 1;
51 }
52 __setup("all-generic-ide", ide_generic_all_on);
53 #endif
54 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
55 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
56
57 static void __devinit init_hwif_generic (ide_hwif_t *hwif)
58 {
59         switch(hwif->pci_dev->device) {
60                 case PCI_DEVICE_ID_UMC_UM8673F:
61                 case PCI_DEVICE_ID_UMC_UM8886A:
62                 case PCI_DEVICE_ID_UMC_UM8886BF:
63                         hwif->irq = hwif->channel ? 15 : 14;
64                         break;
65                 default:
66                         break;
67         }
68 }
69
70 #define DECLARE_GENERIC_PCI_DEV(name_str, dma_setting) \
71         { \
72                 .name           = name_str, \
73                 .init_hwif      = init_hwif_generic, \
74                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
75                                   dma_setting | \
76                                   IDE_HFLAG_BOOTABLE, \
77                 .swdma_mask     = ATA_SWDMA2, \
78                 .mwdma_mask     = ATA_MWDMA2, \
79                 .udma_mask      = ATA_UDMA6, \
80         }
81
82 static ide_pci_device_t generic_chipsets[] __devinitdata = {
83         /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",     0),
84
85         {       /* 1 */
86                 .name           = "NS87410",
87                 .init_hwif      = init_hwif_generic,
88                 .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
89                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
90                                   IDE_HFLAG_BOOTABLE,
91                 .swdma_mask     = ATA_SWDMA2,
92                 .mwdma_mask     = ATA_MWDMA2,
93                 .udma_mask      = ATA_UDMA6,
94         },
95
96         /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",     0),
97         /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",      0),
98         /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",     IDE_HFLAG_NO_DMA),
99         /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",     IDE_HFLAG_NO_DMA),
100         /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",    IDE_HFLAG_NO_DMA),
101         /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",    0),
102         /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",     IDE_HFLAG_NO_AUTODMA),
103         /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",    IDE_HFLAG_NO_AUTODMA),
104
105         {       /* 10 */
106                 .name           = "VIA8237SATA",
107                 .init_hwif      = init_hwif_generic,
108                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
109                                   IDE_HFLAG_OFF_BOARD,
110                 .swdma_mask     = ATA_SWDMA2,
111                 .mwdma_mask     = ATA_MWDMA2,
112                 .udma_mask      = ATA_UDMA6,
113         },
114
115         /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102", IDE_HFLAG_NO_AUTODMA),
116         /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103", IDE_HFLAG_NO_AUTODMA),
117         /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105", IDE_HFLAG_NO_AUTODMA),
118
119         {       /* 14 */
120                 .name           = "Revolution",
121                 .init_hwif      = init_hwif_generic,
122                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
123                                   IDE_HFLAG_OFF_BOARD,
124                 .swdma_mask     = ATA_SWDMA2,
125                 .mwdma_mask     = ATA_MWDMA2,
126                 .udma_mask      = ATA_UDMA6,
127         }
128 };
129
130 /**
131  *      generic_init_one        -       called when a PIIX is found
132  *      @dev: the generic device
133  *      @id: the matching pci id
134  *
135  *      Called when the PCI registration layer (or the IDE initialization)
136  *      finds a device matching our IDE device tables.
137  */
138  
139 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
140 {
141         ide_pci_device_t *d = &generic_chipsets[id->driver_data];
142         int ret = -ENODEV;
143
144         /* Don't use the generic entry unless instructed to do so */
145         if (id->driver_data == 0 && ide_generic_all == 0)
146                         goto out;
147
148         switch (dev->vendor) {
149         case PCI_VENDOR_ID_UMC:
150                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
151                                 !(PCI_FUNC(dev->devfn) & 1))
152                         goto out; /* UM8886A/BF pair */
153                 break;
154         case PCI_VENDOR_ID_OPTI:
155                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
156                                 !(PCI_FUNC(dev->devfn) & 1))
157                         goto out;
158                 break;
159         case PCI_VENDOR_ID_JMICRON:
160                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
161                                 PCI_FUNC(dev->devfn) != 1)
162                         goto out;
163                 break;
164         case PCI_VENDOR_ID_NS:
165                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
166                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
167                         goto out;
168                 break;
169         }
170
171         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
172                 u16 command;
173                 pci_read_config_word(dev, PCI_COMMAND, &command);
174                 if (!(command & PCI_COMMAND_IO)) {
175                         printk(KERN_INFO "Skipping disabled %s IDE "
176                                         "controller.\n", d->name);
177                         goto out;
178                 }
179         }
180         ret = ide_setup_pci_device(dev, d);
181 out:
182         return ret;
183 }
184
185 static const struct pci_device_id generic_pci_tbl[] = {
186         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
187         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
188         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              3 },
189         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              4 },
190         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              5 },
191         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             6 },
192         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         7 },
193         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               8 },
194         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              9 },
195 #ifdef CONFIG_BLK_DEV_IDE_SATA
196         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),           10 },
197 #endif
198         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),         11 },
199         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),       12 },
200         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),       13 },
201         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),              14 },
202         /*
203          * Must come last.  If you add entries adjust
204          * this table and generic_chipsets[] appropriately.
205          */
206         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
207         { 0, },
208 };
209 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
210
211 static struct pci_driver driver = {
212         .name           = "PCI_IDE",
213         .id_table       = generic_pci_tbl,
214         .probe          = generic_init_one,
215 };
216
217 static int __init generic_ide_init(void)
218 {
219         return ide_pci_register_driver(&driver);
220 }
221
222 module_init(generic_ide_init);
223
224 MODULE_AUTHOR("Andre Hedrick");
225 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
226 MODULE_LICENSE("GPL");