LXR linux/drivers/ata/pata

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *    pata_netcell.c - Netcell PATA driver
   4 *
   5 *      (c) 2006 Red Hat
   6 */
   7
   8#include <linux/kernel.h>
   9#include <linux/module.h>
  10#include <linux/pci.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, __le16 *id)
  25{
  26        unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);
  27
  28        /* Firmware forgets to mark words 85-87 valid */
  29        if (err_mask == 0)
  30                id[ATA_ID_CSF_DEFAULT] |= cpu_to_le16(0x4000);
  31        return err_mask;
  32}
  33
  34static struct scsi_host_template netcell_sht = {
  35        ATA_BMDMA_SHT(DRV_NAME),
  36};
  37
  38static struct ata_port_operations netcell_ops = {
  39        .inherits       = &ata_bmdma_port_ops,
  40        .cable_detect   = ata_cable_80wire,
  41        .read_id        = netcell_read_id,
  42};
  43
  44
  45/**
  46 *      netcell_init_one - Register Netcell ATA PCI device with kernel services
  47 *      @pdev: PCI device to register
  48 *      @ent: Entry in netcell_pci_tbl matching with @pdev
  49 *
  50 *      Called from kernel PCI layer.
  51 *
  52 *      LOCKING:
  53 *      Inherited from PCI layer (may sleep).
  54 *
  55 *      RETURNS:
  56 *      Zero on success, or -ERRNO value.
  57 */
  58
  59static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
  60{
  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        ata_print_version_once(&pdev->dev, DRV_VERSION);
  74
  75        rc = pcim_enable_device(pdev);
  76        if (rc)
  77                return rc;
  78
  79        /* Any chip specific setup/optimisation/messages here */
  80        ata_pci_bmdma_clear_simplex(pdev);
  81
  82        /* And let the library code do the work */
  83        return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
  84}
  85
  86static const struct pci_device_id netcell_pci_tbl[] = {
  87        { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
  88
  89        { }     /* terminate list */
  90};
  91
  92static struct pci_driver netcell_pci_driver = {
  93        .name                   = DRV_NAME,
  94        .id_table               = netcell_pci_tbl,
  95        .probe                  = netcell_init_one,
  96        .remove                 = ata_pci_remove_one,
  97#ifdef CONFIG_PM_SLEEP
  98        .suspend                = ata_pci_device_suspend,
  99        .resume                 = ata_pci_device_resume,
 100#endif
 101};
 102
 103module_pci_driver(netcell_pci_driver);
 104
 105MODULE_AUTHOR("Alan Cox");
 106MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
 107MODULE_LICENSE("GPL");
 108MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
 109MODULE_VERSION(DRV_VERSION);
 110