drivers/ata/pata_netcell.c

   1 /*
   2  *    pata_netcell.c - Netcell PATA driver
   3  *
   4  *      (c) 2006 Red Hat  <alan@redhat.com>
   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
  23 static struct scsi_host_template netcell_sht = {
  24         .module                 = THIS_MODULE,
  25         .name                   = DRV_NAME,
  26         .ioctl                  = ata_scsi_ioctl,
  27         .queuecommand           = ata_scsi_queuecmd,
  28         .can_queue              = ATA_DEF_QUEUE,
  29         .this_id                = ATA_SHT_THIS_ID,
  30         .sg_tablesize           = LIBATA_MAX_PRD,
  31         .cmd_per_lun            = ATA_SHT_CMD_PER_LUN,
  32         .emulated               = ATA_SHT_EMULATED,
  33         .use_clustering         = ATA_SHT_USE_CLUSTERING,
  34         .proc_name              = DRV_NAME,
  35         .dma_boundary           = ATA_DMA_BOUNDARY,
  36         .slave_configure        = ata_scsi_slave_config,
  37         .slave_destroy          = ata_scsi_slave_destroy,
  38         /* Use standard CHS mapping rules */
  39         .bios_param             = ata_std_bios_param,
  40 #ifdef CONFIG_PM
  41         .resume                 = ata_scsi_device_resume,
  42         .suspend                = ata_scsi_device_suspend,
  43 #endif
  44 };
  45
  46 static const struct ata_port_operations netcell_ops = {
  47         .port_disable           = ata_port_disable,
  48
  49         /* Task file is PCI ATA format, use helpers */
  50         .tf_load                = ata_tf_load,
  51         .tf_read                = ata_tf_read,
  52         .check_status           = ata_check_status,
  53         .exec_command           = ata_exec_command,
  54         .dev_select             = ata_std_dev_select,
  55
  56         .freeze                 = ata_bmdma_freeze,
  57         .thaw                   = ata_bmdma_thaw,
  58         .error_handler          = ata_bmdma_error_handler,
  59         .post_internal_cmd      = ata_bmdma_post_internal_cmd,
  60         .cable_detect           = ata_cable_80wire,
  61
  62         /* BMDMA handling is PCI ATA format, use helpers */
  63         .bmdma_setup            = ata_bmdma_setup,
  64         .bmdma_start            = ata_bmdma_start,
  65         .bmdma_stop             = ata_bmdma_stop,
  66         .bmdma_status           = ata_bmdma_status,
  67         .qc_prep                = ata_qc_prep,
  68         .qc_issue               = ata_qc_issue_prot,
  69         .data_xfer              = ata_data_xfer,
  70
  71         /* IRQ-related hooks */
  72         .irq_handler            = ata_interrupt,
  73         .irq_clear              = ata_bmdma_irq_clear,
  74         .irq_on                 = ata_irq_on,
  75         .irq_ack                = ata_irq_ack,
  76
  77         /* Generic PATA PCI ATA helpers */
  78         .port_start             = ata_port_start,
  79 };
  80
  81
  82 /**
  83  *      netcell_init_one - Register Netcell ATA PCI device with kernel services
  84  *      @pdev: PCI device to register
  85  *      @ent: Entry in netcell_pci_tbl matching with @pdev
  86  *
  87  *      Called from kernel PCI layer.
  88  *
  89  *      LOCKING:
  90  *      Inherited from PCI layer (may sleep).
  91  *
  92  *      RETURNS:
  93  *      Zero on success, or -ERRNO value.
  94  */
  95
  96 static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
  97 {
  98         static int printed_version;
  99         static struct ata_port_info info = {
 100                 .sht            = &netcell_sht,
 101                 .flags          = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
 102                 /* Actually we don't really care about these as the
 103                    firmware deals with it */
 104                 .pio_mask       = 0x1f, /* pio0-4 */
 105                 .mwdma_mask     = 0x07, /* mwdma0-2 */
 106                 .udma_mask      = 0x3f, /* UDMA 133 */
 107                 .port_ops       = &netcell_ops,
 108         };
 109         static struct ata_port_info *port_info[2] = { &info, &info };
 110
 111         if (!printed_version++)
 112                 dev_printk(KERN_DEBUG, &pdev->dev,
 113                            "version " DRV_VERSION "\n");
 114
 115         /* Any chip specific setup/optimisation/messages here */
 116         ata_pci_clear_simplex(pdev);
 117
 118         /* And let the library code do the work */
 119         return ata_pci_init_one(pdev, port_info, 2);
 120 }
 121
 122 static const struct pci_device_id netcell_pci_tbl[] = {
 123         { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
 124
 125         { }     /* terminate list */
 126 };
 127
 128 static struct pci_driver netcell_pci_driver = {
 129         .name                   = DRV_NAME,
 130         .id_table               = netcell_pci_tbl,
 131         .probe                  = netcell_init_one,
 132         .remove                 = ata_pci_remove_one,
 133 #ifdef CONFIG_PM
 134         .suspend                = ata_pci_device_suspend,
 135         .resume                 = ata_pci_device_resume,
 136 #endif
 137 };
 138
 139 static int __init netcell_init(void)
 140 {
 141         return pci_register_driver(&netcell_pci_driver);
 142 }
 143
 144 static void __exit netcell_exit(void)
 145 {
 146         pci_unregister_driver(&netcell_pci_driver);
 147 }
 148
 149 module_init(netcell_init);
 150 module_exit(netcell_exit);
 151
 152 MODULE_AUTHOR("Alan Cox");
 153 MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
 154 MODULE_LICENSE("GPL");
 155 MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
 156 MODULE_VERSION(DRV_VERSION);
 157