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-rw-r--r--drivers/ata/pata_netcell.c175
1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/ata/pata_netcell.c b/drivers/ata/pata_netcell.c
new file mode 100644
index 000000000000..e3a85778cd4f
--- /dev/null
+++ b/drivers/ata/pata_netcell.c
@@ -0,0 +1,175 @@
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 */
27
28static 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,
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
69static 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
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);
140
141 /* 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[] = {
146 { PCI_DEVICE(PCI_VENDOR_ID_NETCELL, PCI_DEVICE_ID_REVOLUTION), },
147 { } /* terminate list */
148};
149
150static 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
157static int __init netcell_init(void)
158{
159 return pci_register_driver(&netcell_pci_driver);
160}
161
162static void __exit netcell_exit(void)
163{
164 pci_unregister_driver(&netcell_pci_driver);
165}
166
167module_init(netcell_init);
168module_exit(netcell_exit);
169
170MODULE_AUTHOR("Alan Cox");
171MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
172MODULE_LICENSE("GPL");
173MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
174MODULE_VERSION(DRV_VERSION);
175
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