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ide-pci-generic.c
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1 /*
2  * Copyright (C) 2001-2002 Andre Hedrick <[email protected]>
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 bool 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 static 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 
42 static 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 
56 static const struct ide_port_info generic_chipsets[] __devinitconst = {
57  /* 0: Unknown */
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 */
71  /* 3: UM8673F / UM8886A / UM8886BF */
73  /* 4: VIA_IDE / OPTI621V / Piccolo010{2,3,5} */
75 
76  { /* 5: VIA8237SATA */
77  .name = DRV_NAME,
78  .host_flags = IDE_HFLAG_TRUST_BIOS_FOR_DMA |
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 |
91  .swdma_mask = ATA_SWDMA2,
92  .mwdma_mask = ATA_MWDMA2,
93  .udma_mask = ATA_UDMA6,
94  }
95 };
96 
106 static 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;
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);
148 out:
149  return ret;
150 }
151 
152 static const struct pci_device_id generic_pci_tbl[] = {
155  { PCI_VDEVICE(HOLTEK, PCI_DEVICE_ID_HOLTEK_6565), 2 },
162 #ifdef CONFIG_BLK_DEV_IDE_SATA
164 #endif
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  */
175  { 0, },
176 };
177 MODULE_DEVICE_TABLE(pci, generic_pci_tbl);
178 
179 static 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 
188 static int __init generic_ide_init(void)
189 {
190  return ide_pci_register_driver(&generic_pci_driver);
191 }
192 
193 static void __exit generic_ide_exit(void)
194 {
195  pci_unregister_driver(&generic_pci_driver);
196 }
197 
198 module_init(generic_ide_init);
199 module_exit(generic_ide_exit);
200 
201 MODULE_AUTHOR("Andre Hedrick");
202 MODULE_DESCRIPTION("PCI driver module for generic PCI IDE");
203 MODULE_LICENSE("GPL");