Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-backlight
[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         if (!(hwif->dma_base))
70                 return;
71
72         hwif->atapi_dma = 1;
73         hwif->ultra_mask = 0x7f;
74         hwif->mwdma_mask = 0x07;
75         hwif->swdma_mask = 0x07;
76
77         if (!noautodma)
78                 hwif->autodma = 1;
79         hwif->drives[0].autodma = hwif->autodma;
80         hwif->drives[1].autodma = hwif->autodma;
81 }
82
83 #if 0
84         /* Logic to add back later on */
85
86         if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
87                 ide_pci_device_t *unknown = unknown_chipset;
88                 init_setup_unknown(dev, unknown);
89                 return 1;
90         }
91         return 0;
92 #endif  
93
94 static ide_pci_device_t generic_chipsets[] __devinitdata = {
95         {       /* 0 */
96                 .name           = "Unknown",
97                 .init_hwif      = init_hwif_generic,
98                 .autodma        = AUTODMA,
99                 .bootable       = ON_BOARD,
100         },{     /* 1 */
101                 .name           = "NS87410",
102                 .init_hwif      = init_hwif_generic,
103                 .autodma        = AUTODMA,
104                 .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
105                 .bootable       = ON_BOARD,
106         },{     /* 2 */
107                 .name           = "SAMURAI",
108                 .init_hwif      = init_hwif_generic,
109                 .autodma        = AUTODMA,
110                 .bootable       = ON_BOARD,
111         },{     /* 3 */
112                 .name           = "HT6565",
113                 .init_hwif      = init_hwif_generic,
114                 .autodma        = AUTODMA,
115                 .bootable       = ON_BOARD,
116         },{     /* 4 */
117                 .name           = "UM8673F",
118                 .init_hwif      = init_hwif_generic,
119                 .autodma        = NODMA,
120                 .bootable       = ON_BOARD,
121         },{     /* 5 */
122                 .name           = "UM8886A",
123                 .init_hwif      = init_hwif_generic,
124                 .autodma        = NODMA,
125                 .bootable       = ON_BOARD,
126         },{     /* 6 */
127                 .name           = "UM8886BF",
128                 .init_hwif      = init_hwif_generic,
129                 .autodma        = NODMA,
130                 .bootable       = ON_BOARD,
131         },{     /* 7 */
132                 .name           = "HINT_IDE",
133                 .init_hwif      = init_hwif_generic,
134                 .autodma        = AUTODMA,
135                 .bootable       = ON_BOARD,
136         },{     /* 8 */
137                 .name           = "VIA_IDE",
138                 .init_hwif      = init_hwif_generic,
139                 .autodma        = NOAUTODMA,
140                 .bootable       = ON_BOARD,
141         },{     /* 9 */
142                 .name           = "OPTI621V",
143                 .init_hwif      = init_hwif_generic,
144                 .autodma        = NOAUTODMA,
145                 .bootable       = ON_BOARD,
146         },{     /* 10 */
147                 .name           = "VIA8237SATA",
148                 .init_hwif      = init_hwif_generic,
149                 .autodma        = AUTODMA,
150                 .bootable       = OFF_BOARD,
151         },{     /* 11 */
152                 .name           = "Piccolo0102",
153                 .init_hwif      = init_hwif_generic,
154                 .autodma        = NOAUTODMA,
155                 .bootable       = ON_BOARD,
156         },{     /* 12 */
157                 .name           = "Piccolo0103",
158                 .init_hwif      = init_hwif_generic,
159                 .autodma        = NOAUTODMA,
160                 .bootable       = ON_BOARD,
161         },{     /* 13 */
162                 .name           = "Piccolo0105",
163                 .init_hwif      = init_hwif_generic,
164                 .autodma        = NOAUTODMA,
165                 .bootable       = ON_BOARD,
166         },{     /* 14 */
167                 .name           = "Revolution",
168                 .init_hwif      = init_hwif_generic,
169                 .autodma        = AUTODMA,
170                 .bootable       = OFF_BOARD,
171         }
172 };
173
174 /**
175  *      generic_init_one        -       called when a PIIX is found
176  *      @dev: the generic device
177  *      @id: the matching pci id
178  *
179  *      Called when the PCI registration layer (or the IDE initialization)
180  *      finds a device matching our IDE device tables.
181  */
182  
183 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
184 {
185         ide_pci_device_t *d = &generic_chipsets[id->driver_data];
186         int ret = -ENODEV;
187
188         /* Don't use the generic entry unless instructed to do so */
189         if (id->driver_data == 0 && ide_generic_all == 0)
190                         goto out;
191
192         switch (dev->vendor) {
193         case PCI_VENDOR_ID_UMC:
194                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
195                                 !(PCI_FUNC(dev->devfn) & 1))
196                         goto out; /* UM8886A/BF pair */
197                 break;
198         case PCI_VENDOR_ID_OPTI:
199                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
200                                 !(PCI_FUNC(dev->devfn) & 1))
201                         goto out;
202                 break;
203         case PCI_VENDOR_ID_JMICRON:
204                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
205                                 PCI_FUNC(dev->devfn) != 1)
206                         goto out;
207                 break;
208         case PCI_VENDOR_ID_NS:
209                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
210                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
211                         goto out;
212                 break;
213         }
214
215         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
216                 u16 command;
217                 pci_read_config_word(dev, PCI_COMMAND, &command);
218                 if (!(command & PCI_COMMAND_IO)) {
219                         printk(KERN_INFO "Skipping disabled %s IDE "
220                                         "controller.\n", d->name);
221                         goto out;
222                 }
223         }
224         ret = ide_setup_pci_device(dev, d);
225 out:
226         return ret;
227 }
228
229 static struct pci_device_id generic_pci_tbl[] = {
230         { PCI_VENDOR_ID_NS,     PCI_DEVICE_ID_NS_87410,            PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
231         { PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_SAMURAI_IDE,  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
232         { PCI_VENDOR_ID_HOLTEK, PCI_DEVICE_ID_HOLTEK_6565,         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
233         { PCI_VENDOR_ID_UMC,    PCI_DEVICE_ID_UMC_UM8673F,         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
234         { PCI_VENDOR_ID_UMC,    PCI_DEVICE_ID_UMC_UM8886A,         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5},
235         { PCI_VENDOR_ID_UMC,    PCI_DEVICE_ID_UMC_UM8886BF,        PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6},
236         { PCI_VENDOR_ID_HINT,   PCI_DEVICE_ID_HINT_VXPROII_IDE,    PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7},
237         { PCI_VENDOR_ID_VIA,    PCI_DEVICE_ID_VIA_82C561,          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8},
238         { PCI_VENDOR_ID_OPTI,   PCI_DEVICE_ID_OPTI_82C558,         PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9},
239 #ifdef CONFIG_BLK_DEV_IDE_SATA
240         { PCI_VENDOR_ID_VIA,    PCI_DEVICE_ID_VIA_8237_SATA,       PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10},
241 #endif
242         { PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO,     PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11},
243         { PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1,   PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12},
244         { PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2,   PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13},
245         { PCI_VENDOR_ID_NETCELL,PCI_DEVICE_ID_REVOLUTION,          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14},
246         /* Must come last. If you add entries adjust this table appropriately and the init_one code */
247         { PCI_ANY_ID,           PCI_ANY_ID,                        PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0},
248         { 0, },
249 };
250 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
251
252 static struct pci_driver driver = {
253         .name           = "PCI_IDE",
254         .id_table       = generic_pci_tbl,
255         .probe          = generic_init_one,
256 };
257
258 static int __init generic_ide_init(void)
259 {
260         return ide_pci_register_driver(&driver);
261 }
262
263 module_init(generic_ide_init);
264
265 MODULE_AUTHOR("Andre Hedrick");
266 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
267 MODULE_LICENSE("GPL");