2 * pata_netcell.c - Netcell PATA driver
4 * (c) 2006 Red Hat <alan@redhat.com>
7 #include <linux/kernel.h>
8 #include <linux/module.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>
18 #define DRV_NAME "pata_netcell"
19 #define DRV_VERSION "0.1.5"
22 * netcell_probe_init - check for 40/80 pin
25 * Cables are handled by the RAID controller. Report 80 pin.
28 static int netcell_pre_reset(struct ata_port *ap)
30 ap->cbl = ATA_CBL_PATA80;
31 return ata_std_prereset(ap);
35 * netcell_probe_reset - Probe specified port on PATA host controller
39 * None (inherited from caller).
42 static void netcell_error_handler(struct ata_port *ap)
44 return ata_bmdma_drive_eh(ap, netcell_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
47 /* No PIO or DMA methods needed for this device */
49 static struct scsi_host_template netcell_sht = {
50 .module = THIS_MODULE,
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,
69 static const struct ata_port_operations netcell_ops = {
70 .port_disable = ata_port_disable,
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,
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,
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,
93 /* IRQ-related hooks */
94 .irq_handler = ata_interrupt,
95 .irq_clear = ata_bmdma_irq_clear,
97 /* Generic PATA PCI ATA helpers */
98 .port_start = ata_port_start,
99 .port_stop = ata_port_stop,
100 .host_stop = ata_host_stop,
105 * netcell_init_one - Register Netcell ATA PCI device with kernel services
106 * @pdev: PCI device to register
107 * @ent: Entry in netcell_pci_tbl matching with @pdev
109 * Called from kernel PCI layer.
112 * Inherited from PCI layer (may sleep).
115 * Zero on success, or -ERRNO value.
118 static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
120 static int printed_version;
121 static struct ata_port_info info = {
123 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
124 /* Actually we don't really care about these as the
125 firmware deals with it */
126 .pio_mask = 0x1f, /* pio0-4 */
127 .mwdma_mask = 0x07, /* mwdma0-2 */
128 .udma_mask = 0x3f, /* UDMA 133 */
129 .port_ops = &netcell_ops,
131 static struct ata_port_info *port_info[2] = { &info, &info };
133 if (!printed_version++)
134 dev_printk(KERN_DEBUG, &pdev->dev,
135 "version " DRV_VERSION "\n");
137 /* Any chip specific setup/optimisation/messages here */
138 ata_pci_clear_simplex(pdev);
140 /* And let the library code do the work */
141 return ata_pci_init_one(pdev, port_info, 2);
144 static const struct pci_device_id netcell_pci_tbl[] = {
145 { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
147 { } /* terminate list */
150 static struct pci_driver netcell_pci_driver = {
152 .id_table = netcell_pci_tbl,
153 .probe = netcell_init_one,
154 .remove = ata_pci_remove_one,
157 static int __init netcell_init(void)
159 return pci_register_driver(&netcell_pci_driver);
162 static void __exit netcell_exit(void)
164 pci_unregister_driver(&netcell_pci_driver);
167 module_init(netcell_init);
168 module_exit(netcell_exit);
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);