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/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
  23static 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
  33static struct scsi_host_template netcell_sht = {
  34        ATA_BMDMA_SHT(DRV_NAME),
  35};
  36
  37static 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
  58static 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_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
  86}
  87
  88static const struct pci_device_id netcell_pci_tbl[] = {
  89        { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
  90
  91        { }     /* terminate list */
  92};
  93
  94static 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
 105static int __init netcell_init(void)
 106{
 107        return pci_register_driver(&netcell_pci_driver);
 108}
 109
 110static void __exit netcell_exit(void)
 111{
 112        pci_unregister_driver(&netcell_pci_driver);
 113}
 114
 115module_init(netcell_init);
 116module_exit(netcell_exit);
 117
 118MODULE_AUTHOR("Alan Cox");
 119MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
 120MODULE_LICENSE("GPL");
 121MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
 122MODULE_VERSION(DRV_VERSION);
 123
 124