LXR linux/drivers/ata/pata

   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
  22static 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
  32static struct scsi_host_template netcell_sht = {
  33        ATA_BMDMA_SHT(DRV_NAME),
  34};
  35
  36static 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
  57static 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
  84static const struct pci_device_id netcell_pci_tbl[] = {
  85        { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
  86
  87        { }     /* terminate list */
  88};
  89
  90static 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
 101module_pci_driver(netcell_pci_driver);
 102
 103MODULE_AUTHOR("Alan Cox");
 104MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
 105MODULE_LICENSE("GPL");
 106MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
 107MODULE_VERSION(DRV_VERSION);
 108