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