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[~andy/linux] / 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 const __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 #define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
58
59 #define DECLARE_GENERIC_PCI_DEV(name_str, extra_flags) \
60         { \
61                 .name           = name_str, \
62                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
63                                   extra_flags | \
64                                   IDE_HFLAG_BOOTABLE, \
65                 .swdma_mask     = ATA_SWDMA2, \
66                 .mwdma_mask     = ATA_MWDMA2, \
67                 .udma_mask      = ATA_UDMA6, \
68         }
69
70 static const struct ide_port_info generic_chipsets[] __devinitdata = {
71         /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",     0),
72
73         {       /* 1 */
74                 .name           = "NS87410",
75                 .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
76                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
77                                   IDE_HFLAG_BOOTABLE,
78                 .swdma_mask     = ATA_SWDMA2,
79                 .mwdma_mask     = ATA_MWDMA2,
80                 .udma_mask      = ATA_UDMA6,
81         },
82
83         /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",     0),
84         /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",      0),
85         /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",     IDE_HFLAGS_UMC),
86         /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",     IDE_HFLAGS_UMC),
87         /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",    IDE_HFLAGS_UMC),
88         /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",    0),
89         /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",     IDE_HFLAG_NO_AUTODMA),
90         /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",    IDE_HFLAG_NO_AUTODMA),
91
92         {       /* 10 */
93                 .name           = "VIA8237SATA",
94                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
95                                   IDE_HFLAG_OFF_BOARD,
96                 .swdma_mask     = ATA_SWDMA2,
97                 .mwdma_mask     = ATA_MWDMA2,
98                 .udma_mask      = ATA_UDMA6,
99         },
100
101         /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102", IDE_HFLAG_NO_AUTODMA),
102         /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103", IDE_HFLAG_NO_AUTODMA),
103         /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105", IDE_HFLAG_NO_AUTODMA),
104
105         {       /* 14 */
106                 .name           = "Revolution",
107                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
108                                   IDE_HFLAG_OFF_BOARD,
109                 .swdma_mask     = ATA_SWDMA2,
110                 .mwdma_mask     = ATA_MWDMA2,
111                 .udma_mask      = ATA_UDMA6,
112         }
113 };
114
115 /**
116  *      generic_init_one        -       called when a PIIX is found
117  *      @dev: the generic device
118  *      @id: the matching pci id
119  *
120  *      Called when the PCI registration layer (or the IDE initialization)
121  *      finds a device matching our IDE device tables.
122  */
123  
124 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
125 {
126         const struct ide_port_info *d = &generic_chipsets[id->driver_data];
127         int ret = -ENODEV;
128
129         /* Don't use the generic entry unless instructed to do so */
130         if (id->driver_data == 0 && ide_generic_all == 0)
131                         goto out;
132
133         switch (dev->vendor) {
134         case PCI_VENDOR_ID_UMC:
135                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
136                                 !(PCI_FUNC(dev->devfn) & 1))
137                         goto out; /* UM8886A/BF pair */
138                 break;
139         case PCI_VENDOR_ID_OPTI:
140                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
141                                 !(PCI_FUNC(dev->devfn) & 1))
142                         goto out;
143                 break;
144         case PCI_VENDOR_ID_JMICRON:
145                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
146                                 PCI_FUNC(dev->devfn) != 1)
147                         goto out;
148                 break;
149         case PCI_VENDOR_ID_NS:
150                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
151                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
152                         goto out;
153                 break;
154         }
155
156         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
157                 u16 command;
158                 pci_read_config_word(dev, PCI_COMMAND, &command);
159                 if (!(command & PCI_COMMAND_IO)) {
160                         printk(KERN_INFO "Skipping disabled %s IDE "
161                                         "controller.\n", d->name);
162                         goto out;
163                 }
164         }
165         ret = ide_setup_pci_device(dev, d);
166 out:
167         return ret;
168 }
169
170 static const struct pci_device_id generic_pci_tbl[] = {
171         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
172         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
173         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              3 },
174         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              4 },
175         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              5 },
176         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             6 },
177         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         7 },
178         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               8 },
179         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              9 },
180 #ifdef CONFIG_BLK_DEV_IDE_SATA
181         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),           10 },
182 #endif
183         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),         11 },
184         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),       12 },
185         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),       13 },
186         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),              14 },
187         /*
188          * Must come last.  If you add entries adjust
189          * this table and generic_chipsets[] appropriately.
190          */
191         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
192         { 0, },
193 };
194 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
195
196 static struct pci_driver driver = {
197         .name           = "PCI_IDE",
198         .id_table       = generic_pci_tbl,
199         .probe          = generic_init_one,
200 };
201
202 static int __init generic_ide_init(void)
203 {
204         return ide_pci_register_driver(&driver);
205 }
206
207 module_init(generic_ide_init);
208
209 MODULE_AUTHOR("Andre Hedrick");
210 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
211 MODULE_LICENSE("GPL");