Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs...
[linux-2.6] / drivers / ide / ide-pci-generic.c
1 /*
2  *  Copyright (C) 2001-2002     Andre Hedrick <andre@linux-ide.org>
3  *  Portions (C) Copyright 2002  Red Hat Inc
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License as published by the
7  * Free Software Foundation; either version 2, or (at your option) any
8  * later version.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License for more details.
14  *
15  * For the avoidance of doubt the "preferred form" of this code is one which
16  * is in an open non patent encumbered format. Where cryptographic key signing
17  * forms part of the process of creating an executable the information
18  * including keys needed to generate an equivalently functional executable
19  * are deemed to be part of the source code.
20  */
21
22 #include <linux/types.h>
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/pci.h>
26 #include <linux/ide.h>
27 #include <linux/init.h>
28
29 #define DRV_NAME "ide_pci_generic"
30
31 static int ide_generic_all;             /* Set to claim all devices */
32
33 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
34 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
35
36 #define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
37
38 #define DECLARE_GENERIC_PCI_DEV(extra_flags) \
39         { \
40                 .name           = DRV_NAME, \
41                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
42                                   extra_flags, \
43                 .swdma_mask     = ATA_SWDMA2, \
44                 .mwdma_mask     = ATA_MWDMA2, \
45                 .udma_mask      = ATA_UDMA6, \
46         }
47
48 static const struct ide_port_info generic_chipsets[] __devinitdata = {
49         /*  0: Unknown */
50         DECLARE_GENERIC_PCI_DEV(0),
51
52         {       /* 1: NS87410 */
53                 .name           = DRV_NAME,
54                 .enablebits     = { {0x43, 0x08, 0x08}, {0x47, 0x08, 0x08} },
55                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
56                 .swdma_mask     = ATA_SWDMA2,
57                 .mwdma_mask     = ATA_MWDMA2,
58                 .udma_mask      = ATA_UDMA6,
59         },
60
61         /*  2: SAMURAI / HT6565 / HINT_IDE */
62         DECLARE_GENERIC_PCI_DEV(0),
63         /*  3: UM8673F / UM8886A / UM8886BF */
64         DECLARE_GENERIC_PCI_DEV(IDE_HFLAGS_UMC),
65         /*  4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
66         DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_AUTODMA),
67
68         {       /* 5: VIA8237SATA */
69                 .name           = DRV_NAME,
70                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
71                                   IDE_HFLAG_OFF_BOARD,
72                 .swdma_mask     = ATA_SWDMA2,
73                 .mwdma_mask     = ATA_MWDMA2,
74                 .udma_mask      = ATA_UDMA6,
75         },
76
77         {       /* 6: Revolution */
78                 .name           = DRV_NAME,
79                 .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
80                                   IDE_HFLAG_TRUST_BIOS_FOR_DMA |
81                                   IDE_HFLAG_OFF_BOARD,
82                 .swdma_mask     = ATA_SWDMA2,
83                 .mwdma_mask     = ATA_MWDMA2,
84                 .udma_mask      = ATA_UDMA6,
85         }
86 };
87
88 /**
89  *      generic_init_one        -       called when a PIIX is found
90  *      @dev: the generic device
91  *      @id: the matching pci id
92  *
93  *      Called when the PCI registration layer (or the IDE initialization)
94  *      finds a device matching our IDE device tables.
95  */
96
97 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
98 {
99         const struct ide_port_info *d = &generic_chipsets[id->driver_data];
100         int ret = -ENODEV;
101
102         /* Don't use the generic entry unless instructed to do so */
103         if (id->driver_data == 0 && ide_generic_all == 0)
104                         goto out;
105
106         switch (dev->vendor) {
107         case PCI_VENDOR_ID_UMC:
108                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
109                                 !(PCI_FUNC(dev->devfn) & 1))
110                         goto out; /* UM8886A/BF pair */
111                 break;
112         case PCI_VENDOR_ID_OPTI:
113                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
114                                 !(PCI_FUNC(dev->devfn) & 1))
115                         goto out;
116                 break;
117         case PCI_VENDOR_ID_JMICRON:
118                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
119                                 PCI_FUNC(dev->devfn) != 1)
120                         goto out;
121                 break;
122         case PCI_VENDOR_ID_NS:
123                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
124                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
125                         goto out;
126                 break;
127         }
128
129         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
130                 u16 command;
131                 pci_read_config_word(dev, PCI_COMMAND, &command);
132                 if (!(command & PCI_COMMAND_IO)) {
133                         printk(KERN_INFO "%s %s: skipping disabled "
134                                 "controller\n", d->name, pci_name(dev));
135                         goto out;
136                 }
137         }
138         ret = ide_pci_init_one(dev, d, NULL);
139 out:
140         return ret;
141 }
142
143 static const struct pci_device_id generic_pci_tbl[] = {
144         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
145         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
146         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              2 },
147         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              3 },
148         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              3 },
149         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             3 },
150         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         2 },
151         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               4 },
152         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              4 },
153 #ifdef CONFIG_BLK_DEV_IDE_SATA
154         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),            5 },
155 #endif
156         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),          4 },
157         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),        4 },
158         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),        4 },
159         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),               6 },
160         /*
161          * Must come last.  If you add entries adjust
162          * this table and generic_chipsets[] appropriately.
163          */
164         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
165         { 0, },
166 };
167 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
168
169 static struct pci_driver generic_pci_driver = {
170         .name           = "PCI_IDE",
171         .id_table       = generic_pci_tbl,
172         .probe          = generic_init_one,
173         .remove         = ide_pci_remove,
174         .suspend        = ide_pci_suspend,
175         .resume         = ide_pci_resume,
176 };
177
178 static int __init generic_ide_init(void)
179 {
180         return ide_pci_register_driver(&generic_pci_driver);
181 }
182
183 static void __exit generic_ide_exit(void)
184 {
185         pci_unregister_driver(&generic_pci_driver);
186 }
187
188 module_init(generic_ide_init);
189 module_exit(generic_ide_exit);
190
191 MODULE_AUTHOR("Andre Hedrick");
192 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
193 MODULE_LICENSE("GPL");