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 int printed_version; 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 if (!printed_version++) 74 dev_printk(KERN_DEBUG, &pdev->dev, 75 "version " DRV_VERSION "\n"); 76 77 rc = pcim_enable_device(pdev); 78 if (rc) 79 return rc; 80 81 /* Any chip specific setup/optimisation/messages here */ 82 ata_pci_bmdma_clear_simplex(pdev); 83 84 /* And let the library code do the work */ 85 return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0); 86} 87 88static const struct pci_device_id netcell_pci_tbl[] = { 89 { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), }, 90 91 { } /* terminate list */ 92}; 93 94static struct pci_driver netcell_pci_driver = { 95 .name = DRV_NAME, 96 .id_table = netcell_pci_tbl, 97 .probe = netcell_init_one, 98 .remove = ata_pci_remove_one, 99#ifdef CONFIG_PM 100 .suspend = ata_pci_device_suspend, 101 .resume = ata_pci_device_resume, 102#endif 103}; 104 105static int __init netcell_init(void) 106{ 107 return pci_register_driver(&netcell_pci_driver); 108} 109 110static void __exit netcell_exit(void) 111{ 112 pci_unregister_driver(&netcell_pci_driver); 113} 114 115module_init(netcell_init); 116module_exit(netcell_exit); 117 118MODULE_AUTHOR("Alan Cox"); 119MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID"); 120MODULE_LICENSE("GPL"); 121MODULE_DEVICE_TABLE(pci, netcell_pci_tbl); 122MODULE_VERSION(DRV_VERSION); 123