drivers/ata/pata_netcell.c

   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
  23 static 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
  34 static const struct scsi_host_template netcell_sht = {
  35         ATA_BMDMA_SHT(DRV_NAME),
  36 };
  37
  38 static 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
  59 static 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
  86 static const struct pci_device_id netcell_pci_tbl[] = {
  87         { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
  88
  89         { }     /* terminate list */
  90 };
  91
  92 static 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
 103 module_pci_driver(netcell_pci_driver);
 104
 105 MODULE_AUTHOR("Alan Cox");
 106 MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
 107 MODULE_LICENSE("GPL");
 108 MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
 109 MODULE_VERSION(DRV_VERSION);