Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 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 "0.1.5" |
| 20 | |
| 21 | /** |
| 22 | * netcell_probe_init - check for 40/80 pin |
| 23 | * @ap: Port |
| 24 | * |
| 25 | * Cables are handled by the RAID controller. Report 80 pin. |
| 26 | */ |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 27 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 28 | static int netcell_pre_reset(struct ata_port *ap) |
| 29 | { |
| 30 | ap->cbl = ATA_CBL_PATA80; |
| 31 | return ata_std_prereset(ap); |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * netcell_probe_reset - Probe specified port on PATA host controller |
| 36 | * @ap: Port to probe |
| 37 | * |
| 38 | * LOCKING: |
| 39 | * None (inherited from caller). |
| 40 | */ |
| 41 | |
| 42 | static void netcell_error_handler(struct ata_port *ap) |
| 43 | { |
| 44 | return ata_bmdma_drive_eh(ap, netcell_pre_reset, ata_std_softreset, NULL, ata_std_postreset); |
| 45 | } |
| 46 | |
| 47 | /* No PIO or DMA methods needed for this device */ |
| 48 | |
| 49 | static struct scsi_host_template netcell_sht = { |
| 50 | .module = THIS_MODULE, |
| 51 | .name = DRV_NAME, |
| 52 | .ioctl = ata_scsi_ioctl, |
| 53 | .queuecommand = ata_scsi_queuecmd, |
| 54 | .can_queue = ATA_DEF_QUEUE, |
| 55 | .this_id = ATA_SHT_THIS_ID, |
| 56 | .sg_tablesize = LIBATA_MAX_PRD, |
| 57 | /* Special handling needed if you have sector or LBA48 limits */ |
| 58 | .max_sectors = ATA_MAX_SECTORS, |
| 59 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
| 60 | .emulated = ATA_SHT_EMULATED, |
| 61 | .use_clustering = ATA_SHT_USE_CLUSTERING, |
| 62 | .proc_name = DRV_NAME, |
| 63 | .dma_boundary = ATA_DMA_BOUNDARY, |
| 64 | .slave_configure = ata_scsi_slave_config, |
| 65 | /* Use standard CHS mapping rules */ |
| 66 | .bios_param = ata_std_bios_param, |
| 67 | }; |
| 68 | |
| 69 | static const struct ata_port_operations netcell_ops = { |
| 70 | .port_disable = ata_port_disable, |
| 71 | |
| 72 | /* Task file is PCI ATA format, use helpers */ |
| 73 | .tf_load = ata_tf_load, |
| 74 | .tf_read = ata_tf_read, |
| 75 | .check_status = ata_check_status, |
| 76 | .exec_command = ata_exec_command, |
| 77 | .dev_select = ata_std_dev_select, |
| 78 | |
| 79 | .freeze = ata_bmdma_freeze, |
| 80 | .thaw = ata_bmdma_thaw, |
| 81 | .error_handler = netcell_error_handler, |
| 82 | .post_internal_cmd = ata_bmdma_post_internal_cmd, |
| 83 | |
| 84 | /* BMDMA handling is PCI ATA format, use helpers */ |
| 85 | .bmdma_setup = ata_bmdma_setup, |
| 86 | .bmdma_start = ata_bmdma_start, |
| 87 | .bmdma_stop = ata_bmdma_stop, |
| 88 | .bmdma_status = ata_bmdma_status, |
| 89 | .qc_prep = ata_qc_prep, |
| 90 | .qc_issue = ata_qc_issue_prot, |
| 91 | .data_xfer = ata_pio_data_xfer, |
| 92 | |
| 93 | /* Timeout handling. Special recovery hooks here */ |
| 94 | .eng_timeout = ata_eng_timeout, |
| 95 | .irq_handler = ata_interrupt, |
| 96 | .irq_clear = ata_bmdma_irq_clear, |
| 97 | |
| 98 | /* Generic PATA PCI ATA helpers */ |
| 99 | .port_start = ata_port_start, |
| 100 | .port_stop = ata_port_stop, |
| 101 | .host_stop = ata_host_stop, |
| 102 | }; |
| 103 | |
| 104 | |
| 105 | /** |
| 106 | * netcell_init_one - Register Netcell ATA PCI device with kernel services |
| 107 | * @pdev: PCI device to register |
| 108 | * @ent: Entry in netcell_pci_tbl matching with @pdev |
| 109 | * |
| 110 | * Called from kernel PCI layer. |
| 111 | * |
| 112 | * LOCKING: |
| 113 | * Inherited from PCI layer (may sleep). |
| 114 | * |
| 115 | * RETURNS: |
| 116 | * Zero on success, or -ERRNO value. |
| 117 | */ |
| 118 | |
| 119 | static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) |
| 120 | { |
| 121 | static int printed_version; |
| 122 | static struct ata_port_info info = { |
| 123 | .sht = &netcell_sht, |
| 124 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, |
| 125 | /* Actually we don't really care about these as the |
| 126 | firmware deals with it */ |
| 127 | .pio_mask = 0x1f, /* pio0-4 */ |
| 128 | .mwdma_mask = 0x07, /* mwdma0-2 */ |
| 129 | .udma_mask = 0x3f, /* UDMA 133 */ |
| 130 | .port_ops = &netcell_ops, |
| 131 | }; |
| 132 | static struct ata_port_info *port_info[2] = { &info, &info }; |
| 133 | |
| 134 | if (!printed_version++) |
| 135 | dev_printk(KERN_DEBUG, &pdev->dev, |
| 136 | "version " DRV_VERSION "\n"); |
| 137 | |
| 138 | /* Any chip specific setup/optimisation/messages here */ |
| 139 | ata_pci_clear_simplex(pdev); |
Jeff Garzik | 85cd725 | 2006-08-31 00:03:49 -0400 | [diff] [blame] | 140 | |
Jeff Garzik | 669a5db | 2006-08-29 18:12:40 -0400 | [diff] [blame] | 141 | /* And let the library code do the work */ |
| 142 | return ata_pci_init_one(pdev, port_info, 2); |
| 143 | } |
| 144 | |
| 145 | static const struct pci_device_id netcell_pci_tbl[] = { |
| 146 | { PCI_DEVICE(PCI_VENDOR_ID_NETCELL, PCI_DEVICE_ID_REVOLUTION), }, |
| 147 | { } /* terminate list */ |
| 148 | }; |
| 149 | |
| 150 | static struct pci_driver netcell_pci_driver = { |
| 151 | .name = DRV_NAME, |
| 152 | .id_table = netcell_pci_tbl, |
| 153 | .probe = netcell_init_one, |
| 154 | .remove = ata_pci_remove_one, |
| 155 | }; |
| 156 | |
| 157 | static int __init netcell_init(void) |
| 158 | { |
| 159 | return pci_register_driver(&netcell_pci_driver); |
| 160 | } |
| 161 | |
| 162 | static void __exit netcell_exit(void) |
| 163 | { |
| 164 | pci_unregister_driver(&netcell_pci_driver); |
| 165 | } |
| 166 | |
| 167 | module_init(netcell_init); |
| 168 | module_exit(netcell_exit); |
| 169 | |
| 170 | MODULE_AUTHOR("Alan Cox"); |
| 171 | MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID"); |
| 172 | MODULE_LICENSE("GPL"); |
| 173 | MODULE_DEVICE_TABLE(pci, netcell_pci_tbl); |
| 174 | MODULE_VERSION(DRV_VERSION); |
| 175 | |