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); 157 158