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Linux/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 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[] = {
 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 
106 static int 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);
148 out:
149         return ret;
150 }
151 
152 static 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 };
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");
204 

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