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 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); 110