Root/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
31static bool ide_generic_all; /* Set to claim all devices */
32
33module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
34MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");
35
36static void netcell_quirkproc(ide_drive_t *drive)
37{
38    /* mark words 85-87 as valid */
39    drive->id[ATA_ID_CSF_DEFAULT] |= 0x4000;
40}
41
42static const struct ide_port_ops netcell_port_ops = {
43    .quirkproc = netcell_quirkproc,
44};
45
46#define DECLARE_GENERIC_PCI_DEV(extra_flags) \
47    { \
48        .name = DRV_NAME, \
49        .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA | \
50                  extra_flags, \
51        .swdma_mask = ATA_SWDMA2, \
52        .mwdma_mask = ATA_MWDMA2, \
53        .udma_mask = ATA_UDMA6, \
54    }
55
56static const struct ide_port_info generic_chipsets[] __devinitdata = {
57    /* 0: Unknown */
58    DECLARE_GENERIC_PCI_DEV(0),
59
60    { /* 1: NS87410 */
61        .name = DRV_NAME,
62        .enablebits = { {0x43, 0x08, 0x08}, {0x47, 0x08, 0x08} },
63        .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA,
64        .swdma_mask = ATA_SWDMA2,
65        .mwdma_mask = ATA_MWDMA2,
66        .udma_mask = ATA_UDMA6,
67    },
68
69    /* 2: SAMURAI / HT6565 / HINT_IDE */
70    DECLARE_GENERIC_PCI_DEV(0),
71    /* 3: UM8673F / UM8886A / UM8886BF */
72    DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_DMA),
73    /* 4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
74    DECLARE_GENERIC_PCI_DEV(IDE_HFLAG_NO_AUTODMA),
75
76    { /* 5: VIA8237SATA */
77        .name = DRV_NAME,
78        .host_flags = 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    { /* 6: Revolution */
86        .name = DRV_NAME,
87        .port_ops = &netcell_port_ops,
88        .host_flags = IDE_HFLAG_CLEAR_SIMPLEX |
89                  IDE_HFLAG_TRUST_BIOS_FOR_DMA |
90                  IDE_HFLAG_OFF_BOARD,
91        .swdma_mask = ATA_SWDMA2,
92        .mwdma_mask = ATA_MWDMA2,
93        .udma_mask = ATA_UDMA6,
94    }
95};
96
97/**
98 * generic_init_one - called when a PIIX is found
99 * @dev: the generic device
100 * @id: the matching pci id
101 *
102 * Called when the PCI registration layer (or the IDE initialization)
103 * finds a device matching our IDE device tables.
104 */
105
106static int __devinit generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
107{
108    const struct ide_port_info *d = &generic_chipsets[id->driver_data];
109    int ret = -ENODEV;
110
111    /* Don't use the generic entry unless instructed to do so */
112    if (id->driver_data == 0 && ide_generic_all == 0)
113            goto out;
114
115    switch (dev->vendor) {
116    case PCI_VENDOR_ID_UMC:
117        if (dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
118                !(PCI_FUNC(dev->devfn) & 1))
119            goto out; /* UM8886A/BF pair */
120        break;
121    case PCI_VENDOR_ID_OPTI:
122        if (dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
123                !(PCI_FUNC(dev->devfn) & 1))
124            goto out;
125        break;
126    case PCI_VENDOR_ID_JMICRON:
127        if (dev->device != PCI_DEVICE_ID_JMICRON_JMB368 &&
128                PCI_FUNC(dev->devfn) != 1)
129            goto out;
130        break;
131    case PCI_VENDOR_ID_NS:
132        if (dev->device == PCI_DEVICE_ID_NS_87410 &&
133                (dev->class >> 8) != PCI_CLASS_STORAGE_IDE)
134            goto out;
135        break;
136    }
137
138    if (dev->vendor != PCI_VENDOR_ID_JMICRON) {
139        u16 command;
140        pci_read_config_word(dev, PCI_COMMAND, &command);
141        if (!(command & PCI_COMMAND_IO)) {
142            printk(KERN_INFO "%s %s: skipping disabled "
143                "controller\n", d->name, pci_name(dev));
144            goto out;
145        }
146    }
147    ret = ide_pci_init_one(dev, d, NULL);
148out:
149    return ret;
150}
151
152static const struct pci_device_id generic_pci_tbl[] = {
153    { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_87410), 1 },
154    { PCI_VDEVICE(PCTECH, PCI_DEVICE_ID_PCTECH_SAMURAI_IDE), 2 },
155    { PCI_VDEVICE(HOLTEK, PCI_DEVICE_ID_HOLTEK_6565), 2 },
156    { PCI_VDEVICE(UMC, PCI_DEVICE_ID_UMC_UM8673F), 3 },
157    { PCI_VDEVICE(UMC, PCI_DEVICE_ID_UMC_UM8886A), 3 },
158    { PCI_VDEVICE(UMC, PCI_DEVICE_ID_UMC_UM8886BF), 3 },
159    { PCI_VDEVICE(HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE), 2 },
160    { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C561), 4 },
161    { PCI_VDEVICE(OPTI, PCI_DEVICE_ID_OPTI_82C558), 4 },
162#ifdef CONFIG_BLK_DEV_IDE_SATA
163    { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_8237_SATA), 5 },
164#endif
165    { PCI_VDEVICE(TOSHIBA, PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), 4 },
166    { PCI_VDEVICE(TOSHIBA, PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), 4 },
167    { PCI_VDEVICE(TOSHIBA, PCI_DEVICE_ID_TOSHIBA_PICCOLO_3), 4 },
168    { PCI_VDEVICE(TOSHIBA, PCI_DEVICE_ID_TOSHIBA_PICCOLO_5), 4 },
169    { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), 6 },
170    /*
171     * Must come last. If you add entries adjust
172     * this table and generic_chipsets[] appropriately.
173     */
174    { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 0 },
175    { 0, },
176};
177MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
178
179static struct pci_driver generic_pci_driver = {
180    .name = "PCI_IDE",
181    .id_table = generic_pci_tbl,
182    .probe = generic_init_one,
183    .remove = ide_pci_remove,
184    .suspend = ide_pci_suspend,
185    .resume = ide_pci_resume,
186};
187
188static int __init generic_ide_init(void)
189{
190    return ide_pci_register_driver(&generic_pci_driver);
191}
192
193static void __exit generic_ide_exit(void)
194{
195    pci_unregister_driver(&generic_pci_driver);
196}
197
198module_init(generic_ide_init);
199module_exit(generic_ide_exit);
200
201MODULE_AUTHOR("Andre Hedrick");
202MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
203MODULE_LICENSE("GPL");
204

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