blob: e8393e19be47d94b9c06b13e2a16ca157b9c9cce [file] [log] [blame]
Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
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"
Alan30ced0f2006-11-22 16:57:36 +000019#define DRV_VERSION "0.1.6"
Jeff Garzik669a5db2006-08-29 18:12:40 -040020
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 Garzik85cd7252006-08-31 00:03:49 -040027
Jeff Garzik669a5db2006-08-29 18:12:40 -040028static 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
42static 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
49static 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,
Jeff Garzik669a5db2006-08-29 18:12:40 -040057 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
58 .emulated = ATA_SHT_EMULATED,
59 .use_clustering = ATA_SHT_USE_CLUSTERING,
60 .proc_name = DRV_NAME,
61 .dma_boundary = ATA_DMA_BOUNDARY,
62 .slave_configure = ata_scsi_slave_config,
Tejun Heoafdfe892006-11-29 11:26:47 +090063 .slave_destroy = ata_scsi_slave_destroy,
Jeff Garzik669a5db2006-08-29 18:12:40 -040064 /* Use standard CHS mapping rules */
65 .bios_param = ata_std_bios_param,
Alan30ced0f2006-11-22 16:57:36 +000066 .resume = ata_scsi_device_resume,
67 .suspend = ata_scsi_device_suspend,
Jeff Garzik669a5db2006-08-29 18:12:40 -040068};
69
70static const struct ata_port_operations netcell_ops = {
71 .port_disable = ata_port_disable,
72
73 /* Task file is PCI ATA format, use helpers */
74 .tf_load = ata_tf_load,
75 .tf_read = ata_tf_read,
76 .check_status = ata_check_status,
77 .exec_command = ata_exec_command,
78 .dev_select = ata_std_dev_select,
79
80 .freeze = ata_bmdma_freeze,
81 .thaw = ata_bmdma_thaw,
82 .error_handler = netcell_error_handler,
83 .post_internal_cmd = ata_bmdma_post_internal_cmd,
84
85 /* BMDMA handling is PCI ATA format, use helpers */
86 .bmdma_setup = ata_bmdma_setup,
87 .bmdma_start = ata_bmdma_start,
88 .bmdma_stop = ata_bmdma_stop,
89 .bmdma_status = ata_bmdma_status,
90 .qc_prep = ata_qc_prep,
91 .qc_issue = ata_qc_issue_prot,
Tejun Heo0d5ff562007-02-01 15:06:36 +090092 .data_xfer = ata_data_xfer,
Jeff Garzik669a5db2006-08-29 18:12:40 -040093
Jeff Garzikbda30282006-09-27 05:41:13 -040094 /* IRQ-related hooks */
Jeff Garzik669a5db2006-08-29 18:12:40 -040095 .irq_handler = ata_interrupt,
96 .irq_clear = ata_bmdma_irq_clear,
Akira Iguchi246ce3b2007-01-26 16:27:58 +090097 .irq_on = ata_irq_on,
98 .irq_ack = ata_irq_ack,
Jeff Garzik669a5db2006-08-29 18:12:40 -040099
100 /* Generic PATA PCI ATA helpers */
101 .port_start = ata_port_start,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400102};
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
119static 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 Garzik85cd7252006-08-31 00:03:49 -0400140
Jeff Garzik669a5db2006-08-29 18:12:40 -0400141 /* And let the library code do the work */
142 return ata_pci_init_one(pdev, port_info, 2);
143}
144
145static const struct pci_device_id netcell_pci_tbl[] = {
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400146 { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
147
Jeff Garzik669a5db2006-08-29 18:12:40 -0400148 { } /* terminate list */
149};
150
151static struct pci_driver netcell_pci_driver = {
152 .name = DRV_NAME,
153 .id_table = netcell_pci_tbl,
154 .probe = netcell_init_one,
155 .remove = ata_pci_remove_one,
Alan30ced0f2006-11-22 16:57:36 +0000156 .suspend = ata_pci_device_suspend,
157 .resume = ata_pci_device_resume,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400158};
159
160static int __init netcell_init(void)
161{
162 return pci_register_driver(&netcell_pci_driver);
163}
164
165static void __exit netcell_exit(void)
166{
167 pci_unregister_driver(&netcell_pci_driver);
168}
169
170module_init(netcell_init);
171module_exit(netcell_exit);
172
173MODULE_AUTHOR("Alan Cox");
174MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
175MODULE_LICENSE("GPL");
176MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
177MODULE_VERSION(DRV_VERSION);
178