| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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/blkdev.h> |
| 11 | #include <linux/delay.h> |
| 12 | #include <linux/device.h> |
| 13 | #include <scsi/scsi_host.h> |
| 14 | #include <linux/libata.h> |
| 15 | #include <linux/ata.h> |
| 16 | |
| 17 | #define DRV_NAME "pata_netcell" |
| 18 | #define DRV_VERSION "0.1.7" |
| 19 | |
| 20 | /* No PIO or DMA methods needed for this device */ |
| 21 | |
| 22 | static unsigned int netcell_read_id(struct ata_device *adev, |
| 23 | struct ata_taskfile *tf, u16 *id) |
| 24 | { |
| 25 | unsigned int err_mask = ata_do_dev_read_id(adev, tf, id); |
| 26 | /* Firmware forgets to mark words 85-87 valid */ |
| 27 | if (err_mask == 0) |
| 28 | id[ATA_ID_CSF_DEFAULT] |= 0x4000; |
| 29 | return err_mask; |
| 30 | } |
| 31 | |
| 32 | static struct scsi_host_template netcell_sht = { |
| 33 | ATA_BMDMA_SHT(DRV_NAME), |
| 34 | }; |
| 35 | |
| 36 | static struct ata_port_operations netcell_ops = { |
| 37 | .inherits = &ata_bmdma_port_ops, |
| 38 | .cable_detect = ata_cable_80wire, |
| 39 | .read_id = netcell_read_id, |
| 40 | }; |
| 41 | |
| 42 | |
| 43 | /** |
| 44 | * netcell_init_one - Register Netcell ATA PCI device with kernel services |
| 45 | * @pdev: PCI device to register |
| 46 | * @ent: Entry in netcell_pci_tbl matching with @pdev |
| 47 | * |
| 48 | * Called from kernel PCI layer. |
| 49 | * |
| 50 | * LOCKING: |
| 51 | * Inherited from PCI layer (may sleep). |
| 52 | * |
| 53 | * RETURNS: |
| 54 | * Zero on success, or -ERRNO value. |
| 55 | */ |
| 56 | |
| 57 | static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) |
| 58 | { |
| 59 | static const struct ata_port_info info = { |
| 60 | .flags = ATA_FLAG_SLAVE_POSS, |
| 61 | /* Actually we don't really care about these as the |
| 62 | firmware deals with it */ |
| 63 | .pio_mask = ATA_PIO4, |
| 64 | .mwdma_mask = ATA_MWDMA2, |
| 65 | .udma_mask = ATA_UDMA5, /* UDMA 133 */ |
| 66 | .port_ops = &netcell_ops, |
| 67 | }; |
| 68 | const struct ata_port_info *port_info[] = { &info, NULL }; |
| 69 | int rc; |
| 70 | |
| 71 | ata_print_version_once(&pdev->dev, DRV_VERSION); |
| 72 | |
| 73 | rc = pcim_enable_device(pdev); |
| 74 | if (rc) |
| 75 | return rc; |
| 76 | |
| 77 | /* Any chip specific setup/optimisation/messages here */ |
| 78 | ata_pci_bmdma_clear_simplex(pdev); |
| 79 | |
| 80 | /* And let the library code do the work */ |
| 81 | return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0); |
| 82 | } |
| 83 | |
| 84 | static const struct pci_device_id netcell_pci_tbl[] = { |
| 85 | { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), }, |
| 86 | |
| 87 | { } /* terminate list */ |
| 88 | }; |
| 89 | |
| 90 | static struct pci_driver netcell_pci_driver = { |
| 91 | .name = DRV_NAME, |
| 92 | .id_table = netcell_pci_tbl, |
| 93 | .probe = netcell_init_one, |
| 94 | .remove = ata_pci_remove_one, |
| 95 | #ifdef CONFIG_PM_SLEEP |
| 96 | .suspend = ata_pci_device_suspend, |
| 97 | .resume = ata_pci_device_resume, |
| 98 | #endif |
| 99 | }; |
| 100 | |
| 101 | module_pci_driver(netcell_pci_driver); |
| 102 | |
| 103 | MODULE_AUTHOR("Alan Cox"); |
| 104 | MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID"); |
| 105 | MODULE_LICENSE("GPL"); |
| 106 | MODULE_DEVICE_TABLE(pci, netcell_pci_tbl); |
| 107 | MODULE_VERSION(DRV_VERSION); |