linux/drivers/ata/pata_netcell.c
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   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 const struct ata_port_info info = {
  61                .flags          = ATA_FLAG_SLAVE_POSS,
  62                /* Actually we don't really care about these as the
  63                   firmware deals with it */
  64                .pio_mask       = ATA_PIO4,
  65                .mwdma_mask     = ATA_MWDMA2,
  66                .udma_mask      = ATA_UDMA5, /* UDMA 133 */
  67                .port_ops       = &netcell_ops,
  68        };
  69        const struct ata_port_info *port_info[] = { &info, NULL };
  70        int rc;
  71
  72        ata_print_version_once(&pdev->dev, DRV_VERSION);
  73
  74        rc = pcim_enable_device(pdev);
  75        if (rc)
  76                return rc;
  77
  78        /* Any chip specific setup/optimisation/messages here */
  79        ata_pci_bmdma_clear_simplex(pdev);
  80
  81        /* And let the library code do the work */
  82        return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
  83}
  84
  85static const struct pci_device_id netcell_pci_tbl[] = {
  86        { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
  87
  88        { }     /* terminate list */
  89};
  90
  91static struct pci_driver netcell_pci_driver = {
  92        .name                   = DRV_NAME,
  93        .id_table               = netcell_pci_tbl,
  94        .probe                  = netcell_init_one,
  95        .remove                 = ata_pci_remove_one,
  96#ifdef CONFIG_PM
  97        .suspend                = ata_pci_device_suspend,
  98        .resume                 = ata_pci_device_resume,
  99#endif
 100};
 101
 102module_pci_driver(netcell_pci_driver);
 103
 104MODULE_AUTHOR("Alan Cox");
 105MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
 106MODULE_LICENSE("GPL");
 107MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
 108MODULE_VERSION(DRV_VERSION);
 109
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