ide: add IDE_HFLAG_NO_ATAPI_DMA host flag
[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->ultra_mask = 0x7f;
73         hwif->mwdma_mask = 0x07;
74         hwif->swdma_mask = 0x07;
75 }
76
77 #define DECLARE_GENERIC_PCI_DEV(name_str, dma_setting) \
78         { \
79                 .name           = name_str, \
80                 .init_hwif      = init_hwif_generic, \
81                 .autodma        = dma_setting, \
82                 .bootable       = ON_BOARD, \
83                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA, \
84         }
85
86 static ide_pci_device_t generic_chipsets[] __devinitdata = {
87         /*  0 */ DECLARE_GENERIC_PCI_DEV("Unknown",             AUTODMA),
88
89         {       /* 1 */
90                 .name           = "NS87410",
91                 .init_hwif      = init_hwif_generic,
92                 .autodma        = AUTODMA,
93                 .enablebits     = {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
94                 .bootable       = ON_BOARD,
95                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
96         },
97
98         /*  2 */ DECLARE_GENERIC_PCI_DEV("SAMURAI",             AUTODMA),
99         /*  3 */ DECLARE_GENERIC_PCI_DEV("HT6565",              AUTODMA),
100         /*  4 */ DECLARE_GENERIC_PCI_DEV("UM8673F",             NODMA),
101         /*  5 */ DECLARE_GENERIC_PCI_DEV("UM8886A",             NODMA),
102         /*  6 */ DECLARE_GENERIC_PCI_DEV("UM8886BF",            NODMA),
103         /*  7 */ DECLARE_GENERIC_PCI_DEV("HINT_IDE",            AUTODMA),
104         /*  8 */ DECLARE_GENERIC_PCI_DEV("VIA_IDE",             NOAUTODMA),
105         /*  9 */ DECLARE_GENERIC_PCI_DEV("OPTI621V",            NOAUTODMA),
106
107         {       /* 10 */
108                 .name           = "VIA8237SATA",
109                 .init_hwif      = init_hwif_generic,
110                 .autodma        = AUTODMA,
111                 .bootable       = OFF_BOARD,
112                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
113         },
114
115         /* 11 */ DECLARE_GENERIC_PCI_DEV("Piccolo0102",         NOAUTODMA),
116         /* 12 */ DECLARE_GENERIC_PCI_DEV("Piccolo0103",         NOAUTODMA),
117         /* 13 */ DECLARE_GENERIC_PCI_DEV("Piccolo0105",         NOAUTODMA),
118
119         {       /* 14 */
120                 .name           = "Revolution",
121                 .init_hwif      = init_hwif_generic,
122                 .autodma        = AUTODMA,
123                 .bootable       = OFF_BOARD,
124                 .host_flags     = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
125         }
126 };
127
128 /**
129  *      generic_init_one        -       called when a PIIX is found
130  *      @dev: the generic device
131  *      @id: the matching pci id
132  *
133  *      Called when the PCI registration layer (or the IDE initialization)
134  *      finds a device matching our IDE device tables.
135  */
136  
137 static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
138 {
139         ide_pci_device_t *d = &generic_chipsets[id->driver_data];
140         int ret = -ENODEV;
141
142         /* Don't use the generic entry unless instructed to do so */
143         if (id->driver_data == 0 && ide_generic_all == 0)
144                         goto out;
145
146         switch (dev->vendor) {
147         case PCI_VENDOR_ID_UMC:
148                 if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
149                                 !(PCI_FUNC(dev->devfn) & 1))
150                         goto out; /* UM8886A/BF pair */
151                 break;
152         case PCI_VENDOR_ID_OPTI:
153                 if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
154                                 !(PCI_FUNC(dev->devfn) & 1))
155                         goto out;
156                 break;
157         case PCI_VENDOR_ID_JMICRON:
158                 if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
159                                 PCI_FUNC(dev->devfn) != 1)
160                         goto out;
161                 break;
162         case PCI_VENDOR_ID_NS:
163                 if (dev->device == PCI_DEVICE_ID_NS_87410 &&
164                                 (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
165                         goto out;
166                 break;
167         }
168
169         if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
170                 u16 command;
171                 pci_read_config_word(dev, PCI_COMMAND, &command);
172                 if (!(command & PCI_COMMAND_IO)) {
173                         printk(KERN_INFO "Skipping disabled %s IDE "
174                                         "controller.\n", d->name);
175                         goto out;
176                 }
177         }
178         ret = ide_setup_pci_device(dev, d);
179 out:
180         return ret;
181 }
182
183 static const struct pci_device_id generic_pci_tbl[] = {
184         { PCI_VDEVICE(NS,       PCI_DEVICE_ID_NS_87410),                 1 },
185         { PCI_VDEVICE(PCTECH,   PCI_DEVICE_ID_PCTECH_SAMURAI_IDE),       2 },
186         { PCI_VDEVICE(HOLTEK,   PCI_DEVICE_ID_HOLTEK_6565),              3 },
187         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8673F),              4 },
188         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886A),              5 },
189         { PCI_VDEVICE(UMC,      PCI_DEVICE_ID_UMC_UM8886BF),             6 },
190         { PCI_VDEVICE(HINT,     PCI_DEVICE_ID_HINT_VXPROII_IDE),         7 },
191         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_82C561),               8 },
192         { PCI_VDEVICE(OPTI,     PCI_DEVICE_ID_OPTI_82C558),              9 },
193 #ifdef CONFIG_BLK_DEV_IDE_SATA
194         { PCI_VDEVICE(VIA,      PCI_DEVICE_ID_VIA_8237_SATA),           10 },
195 #endif
196         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO),         11 },
197         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_1),       12 },
198         { PCI_VDEVICE(TOSHIBA,  PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),       13 },
199         { PCI_VDEVICE(NETCELL,  PCI_DEVICE_ID_REVOLUTION),              14 },
200         /*
201          * Must come last.  If you add entries adjust
202          * this table and generic_chipsets[] appropriately.
203          */
204         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
205         { 0, },
206 };
207 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
208
209 static struct pci_driver driver = {
210         .name           = "PCI_IDE",
211         .id_table       = generic_pci_tbl,
212         .probe          = generic_init_one,
213 };
214
215 static int __init generic_ide_init(void)
216 {
217         return ide_pci_register_driver(&driver);
218 }
219
220 module_init(generic_ide_init);
221
222 MODULE_AUTHOR("Andre Hedrick");
223 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
224 MODULE_LICENSE("GPL");