drivers/ata/pata_netcell.c

   1 /*
   2  *    pata_netcell.c - Netcell PATA driver
   3  *
   4  *      (c) 2006 Red Hat
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/pci.h>
  10 #include <linux/init.h>
  11 #include <linux/blkdev.h>
  12 #include <linux/delay.h>
  13 #include <linux/device.h>
  14 #include <scsi/scsi_host.h>
  15 #include <linux/libata.h>
  16 #include <linux/ata.h>
  17
  18 #define DRV_NAME        "pata_netcell"
  19 #define DRV_VERSION     "0.1.7"
  20
  21 /* No PIO or DMA methods needed for this device */
  22
  23 static unsigned int netcell_read_id(struct ata_device *adev,
  24                                         struct ata_taskfile *tf, u16 *id)
  25 {
  26         unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);
  27         /* Firmware forgets to mark words 85-87 valid */
  28         if (err_mask == 0)
  29                 id[ATA_ID_CSF_DEFAULT] |= 0x4000;
  30         return err_mask;
  31 }
  32
  33 static struct scsi_host_template netcell_sht = {
  34         ATA_BMDMA_SHT(DRV_NAME),
  35 };
  36
  37 static struct ata_port_operations netcell_ops = {
  38         .inherits       = &ata_bmdma_port_ops,
  39         .cable_detect   = ata_cable_80wire,
  40         .read_id        = netcell_read_id,
  41 };
  42
  43
  44 /**
  45  *      netcell_init_one - Register Netcell ATA PCI device with kernel services
  46  *      @pdev: PCI device to register
  47  *      @ent: Entry in netcell_pci_tbl matching with @pdev
  48  *
  49  *      Called from kernel PCI layer.
  50  *
  51  *      LOCKING:
  52  *      Inherited from PCI layer (may sleep).
  53  *
  54  *      RETURNS:
  55  *      Zero on success, or -ERRNO value.
  56  */
  57
  58 static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
  59 {
  60         static int printed_version;
  61         static const struct ata_port_info info = {
  62                 .flags          = ATA_FLAG_SLAVE_POSS,
  63                 /* Actually we don't really care about these as the
  64                    firmware deals with it */
  65                 .pio_mask       = ATA_PIO4,
  66                 .mwdma_mask     = ATA_MWDMA2,
  67                 .udma_mask      = ATA_UDMA5, /* UDMA 133 */
  68                 .port_ops       = &netcell_ops,
  69         };
  70         const struct ata_port_info *port_info[] = { &info, NULL };
  71         int rc;
  72
  73         if (!printed_version++)
  74                 dev_printk(KERN_DEBUG, &pdev->dev,
  75                            "version " DRV_VERSION "\n");
  76
  77         rc = pcim_enable_device(pdev);
  78         if (rc)
  79                 return rc;
  80
  81         /* Any chip specific setup/optimisation/messages here */
  82         ata_pci_bmdma_clear_simplex(pdev);
  83
  84         /* And let the library code do the work */
  85         return ata_pci_sff_init_one(pdev, port_info, &netcell_sht, NULL);
  86 }
  87
  88 static const struct pci_device_id netcell_pci_tbl[] = {
  89         { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
  90
  91         { }     /* terminate list */
  92 };
  93
  94 static struct pci_driver netcell_pci_driver = {
  95         .name                   = DRV_NAME,
  96         .id_table               = netcell_pci_tbl,
  97         .probe                  = netcell_init_one,
  98         .remove                 = ata_pci_remove_one,
  99 #ifdef CONFIG_PM
 100         .suspend                = ata_pci_device_suspend,
 101         .resume                 = ata_pci_device_resume,
 102 #endif
 103 };
 104
 105 static int __init netcell_init(void)
 106 {
 107         return pci_register_driver(&netcell_pci_driver);
 108 }
 109
 110 static void __exit netcell_exit(void)
 111 {
 112         pci_unregister_driver(&netcell_pci_driver);
 113 }
 114
 115 module_init(netcell_init);
 116 module_exit(netcell_exit);
 117
 118 MODULE_AUTHOR("Alan Cox");
 119 MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
 120 MODULE_LICENSE("GPL");
 121 MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
 122 MODULE_VERSION(DRV_VERSION);
 123