Merge branch 'tracing/urgent' into tracing/ftrace
[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 DECLARE_GENERIC_PCI_DEV(extra_flags) \
37         { \
38                 .name           = DRV_NAME, \
39                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
40                                   extra_flags, \
41                 .swdma_mask     = ATA_SWDMA2, \
42                 .mwdma_mask     = ATA_MWDMA2, \
43                 .udma_mask      = ATA_UDMA6, \
44         }
45
46 static const struct ide_port_info generic_chipsets[] __devinitdata = {
47         /*  0: Unknown */
48         DECLARE_GENERIC_PCI_DEV(0),
49
50         {       /* 1: NS87410 */
51                 .name           = DRV_NAME,
52                 .enablebits     = { {0x43, 0x08, 0x08}, {0x47, 0x08, 0x08} },
53                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
54                 .swdma_mask     = ATA_SWDMA2,
55                 .mwdma_mask     = ATA_MWDMA2,
56                 .udma_mask      = ATA_UDMA6,
57         },
58
59         /*  2: SAMURAI / HT6565 / HINT_IDE */
60         DECLARE_GENERIC_PCI_DEV(0),
61         /*  3: UM8673F / UM8886A / UM8886BF */
62         DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_DMA),
63         /*  4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
64         DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_AUTODMA),
65
66         {       /* 5: VIA8237SATA */
67                 .name           = DRV_NAME,
68                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
69                                   IDE_HFLAG_OFF_BOARD,
70                 .swdma_mask     = ATA_SWDMA2,
71                 .mwdma_mask     = ATA_MWDMA2,
72                 .udma_mask      = ATA_UDMA6,
73         },
74
75         {       /* 6: Revolution */
76                 .name           = DRV_NAME,
77                 .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
78                                   IDE_HFLAG_TRUST_BIOS_FOR_DMA |
79                                   IDE_HFLAG_OFF_BOARD,
80                 .swdma_mask     = ATA_SWDMA2,
81                 .mwdma_mask     = ATA_MWDMA2,
82                 .udma_mask      = ATA_UDMA6,
83         }
84 };
85
86 /**
87  *      generic_init_one        -       called when a PIIX is found
88  *      @dev: the generic device
89  *      @id: the matching pci id
90  *
91  *      Called when the PCI registration layer (or the IDE initialization)
92  *      finds a device matching our IDE device tables.
93  */
94
95 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
96 {
97         const struct ide_port_info *d = &generic_chipsets[id->driver_data];
98         int ret = -ENODEV;
99
100         /* Don't use the generic entry unless instructed to do so */
101         if (id->driver_data == 0 && ide_generic_all == 0)
102                         goto out;
103
104         switch (dev->vendor) {
105         case PCI_VENDOR_ID_UMC:
106                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
107                                 !(PCI_FUNC(dev->devfn) & 1))
108                         goto out; /* UM8886A/BF pair */
109                 break;
110         case PCI_VENDOR_ID_OPTI:
111                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
112                                 !(PCI_FUNC(dev->devfn) & 1))
113                         goto out;
114                 break;
115         case PCI_VENDOR_ID_JMICRON:
116                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
117                                 PCI_FUNC(dev->devfn) != 1)
118                         goto out;
119                 break;
120         case PCI_VENDOR_ID_NS:
121                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
122                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
123                         goto out;
124                 break;
125         }
126
127         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
128                 u16 command;
129                 pci_read_config_word(dev, PCI_COMMAND, &command);
130                 if (!(command & PCI_COMMAND_IO)) {
131                         printk(KERN_INFO "%s %s: skipping disabled "
132                                 "controller\n", d->name, pci_name(dev));
133                         goto out;
134                 }
135         }
136         ret = ide_pci_init_one(dev, d, NULL);
137 out:
138         return ret;
139 }
140
141 static const struct pci_device_id generic_pci_tbl[] = {
142         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
143         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
144         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              2 },
145         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              3 },
146         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              3 },
147         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             3 },
148         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         2 },
149         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               4 },
150         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              4 },
151 #ifdef CONFIG_BLK_DEV_IDE_SATA
152         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),            5 },
153 #endif
154         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),          4 },
155         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),        4 },
156         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),        4 },
157         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),               6 },
158         /*
159          * Must come last.  If you add entries adjust
160          * this table and generic_chipsets[] appropriately.
161          */
162         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
163         { 0, },
164 };
165 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
166
167 static struct pci_driver generic_pci_driver = {
168         .name           = "PCI_IDE",
169         .id_table       = generic_pci_tbl,
170         .probe          = generic_init_one,
171         .remove         = ide_pci_remove,
172         .suspend        = ide_pci_suspend,
173         .resume         = ide_pci_resume,
174 };
175
176 static int __init generic_ide_init(void)
177 {
178         return ide_pci_register_driver(&generic_pci_driver);
179 }
180
181 static void __exit generic_ide_exit(void)
182 {
183         pci_unregister_driver(&generic_pci_driver);
184 }
185
186 module_init(generic_ide_init);
187 module_exit(generic_ide_exit);
188
189 MODULE_AUTHOR("Andre Hedrick");
190 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
191 MODULE_LICENSE("GPL");