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	"0.1.7"
20
21/* No PIO or DMA methods needed for this device */
22
23static struct scsi_host_template netcell_sht = {
24	.module			= THIS_MODULE,
25	.name			= DRV_NAME,
26	.ioctl			= ata_scsi_ioctl,
27	.queuecommand		= ata_scsi_queuecmd,
28	.can_queue		= ATA_DEF_QUEUE,
29	.this_id		= ATA_SHT_THIS_ID,
30	.sg_tablesize		= LIBATA_MAX_PRD,
31	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
32	.emulated		= ATA_SHT_EMULATED,
33	.use_clustering		= ATA_SHT_USE_CLUSTERING,
34	.proc_name		= DRV_NAME,
35	.dma_boundary		= ATA_DMA_BOUNDARY,
36	.slave_configure	= ata_scsi_slave_config,
37	.slave_destroy		= ata_scsi_slave_destroy,
38	/* Use standard CHS mapping rules */
39	.bios_param		= ata_std_bios_param,
40};
41
42static const struct ata_port_operations netcell_ops = {
43	.port_disable		= ata_port_disable,
44
45	/* Task file is PCI ATA format, use helpers */
46	.tf_load		= ata_tf_load,
47	.tf_read		= ata_tf_read,
48	.check_status		= ata_check_status,
49	.exec_command		= ata_exec_command,
50	.dev_select		= ata_std_dev_select,
51
52	.freeze			= ata_bmdma_freeze,
53	.thaw			= ata_bmdma_thaw,
54	.error_handler		= ata_bmdma_error_handler,
55	.post_internal_cmd	= ata_bmdma_post_internal_cmd,
56	.cable_detect		= ata_cable_80wire,
57
58	/* BMDMA handling is PCI ATA format, use helpers */
59	.bmdma_setup		= ata_bmdma_setup,
60	.bmdma_start		= ata_bmdma_start,
61	.bmdma_stop		= ata_bmdma_stop,
62	.bmdma_status		= ata_bmdma_status,
63	.qc_prep		= ata_qc_prep,
64	.qc_issue		= ata_qc_issue_prot,
65	.data_xfer		= ata_data_xfer,
66
67	/* IRQ-related hooks */
68	.irq_handler		= ata_interrupt,
69	.irq_clear		= ata_bmdma_irq_clear,
70	.irq_on			= ata_irq_on,
71	.irq_ack		= ata_irq_ack,
72
73	/* Generic PATA PCI ATA helpers */
74	.port_start		= ata_port_start,
75};
76
77
78/**
79 *	netcell_init_one - Register Netcell ATA PCI device with kernel services
80 *	@pdev: PCI device to register
81 *	@ent: Entry in netcell_pci_tbl matching with @pdev
82 *
83 *	Called from kernel PCI layer.
84 *
85 *	LOCKING:
86 *	Inherited from PCI layer (may sleep).
87 *
88 *	RETURNS:
89 *	Zero on success, or -ERRNO value.
90 */
91
92static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
93{
94	static int printed_version;
95	static const struct ata_port_info info = {
96		.sht		= &netcell_sht,
97		.flags		= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
98		/* Actually we don't really care about these as the
99		   firmware deals with it */
100		.pio_mask	= 0x1f,	/* pio0-4 */
101		.mwdma_mask	= 0x07, /* mwdma0-2 */
102		.udma_mask 	= 0x3f, /* UDMA 133 */
103		.port_ops	= &netcell_ops,
104	};
105	const struct ata_port_info *port_info[] = { &info, NULL };
106
107	if (!printed_version++)
108		dev_printk(KERN_DEBUG, &pdev->dev,
109			   "version " DRV_VERSION "\n");
110
111	/* Any chip specific setup/optimisation/messages here */
112	ata_pci_clear_simplex(pdev);
113
114	/* And let the library code do the work */
115	return ata_pci_init_one(pdev, port_info);
116}
117
118static const struct pci_device_id netcell_pci_tbl[] = {
119	{ PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
120
121	{ }	/* terminate list */
122};
123
124static struct pci_driver netcell_pci_driver = {
125	.name			= DRV_NAME,
126	.id_table		= netcell_pci_tbl,
127	.probe			= netcell_init_one,
128	.remove			= ata_pci_remove_one,
129#ifdef CONFIG_PM
130	.suspend		= ata_pci_device_suspend,
131	.resume			= ata_pci_device_resume,
132#endif
133};
134
135static int __init netcell_init(void)
136{
137	return pci_register_driver(&netcell_pci_driver);
138}
139
140static void __exit netcell_exit(void)
141{
142	pci_unregister_driver(&netcell_pci_driver);
143}
144
145module_init(netcell_init);
146module_exit(netcell_exit);
147
148MODULE_AUTHOR("Alan Cox");
149MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
150MODULE_LICENSE("GPL");
151MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
152MODULE_VERSION(DRV_VERSION);
153