Commit | Line | Data |
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669a5db4 JG |
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" | |
30ced0f0 | 19 | #define DRV_VERSION "0.1.6" |
669a5db4 JG |
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 | */ | |
85cd7251 | 27 | |
669a5db4 JG |
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, | |
669a5db4 JG |
57 | .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, | |
afdfe899 | 63 | .slave_destroy = ata_scsi_slave_destroy, |
669a5db4 JG |
64 | /* Use standard CHS mapping rules */ |
65 | .bios_param = ata_std_bios_param, | |
30ced0f0 A |
66 | .resume = ata_scsi_device_resume, |
67 | .suspend = ata_scsi_device_suspend, | |
669a5db4 JG |
68 | }; |
69 | ||
70 | static 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, | |
0d5ff566 | 92 | .data_xfer = ata_data_xfer, |
669a5db4 | 93 | |
bda30288 | 94 | /* IRQ-related hooks */ |
669a5db4 JG |
95 | .irq_handler = ata_interrupt, |
96 | .irq_clear = ata_bmdma_irq_clear, | |
246ce3b6 AI |
97 | .irq_on = ata_irq_on, |
98 | .irq_ack = ata_irq_ack, | |
669a5db4 JG |
99 | |
100 | /* Generic PATA PCI ATA helpers */ | |
101 | .port_start = ata_port_start, | |
669a5db4 JG |
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); | |
85cd7251 | 140 | |
669a5db4 JG |
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[] = { | |
2d2744fc JG |
146 | { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), }, |
147 | ||
669a5db4 JG |
148 | { } /* terminate list */ |
149 | }; | |
150 | ||
151 | static 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, | |
30ced0f0 A |
156 | .suspend = ata_pci_device_suspend, |
157 | .resume = ata_pci_device_resume, | |
669a5db4 JG |
158 | }; |
159 | ||
160 | static int __init netcell_init(void) | |
161 | { | |
162 | return pci_register_driver(&netcell_pci_driver); | |
163 | } | |
164 | ||
165 | static void __exit netcell_exit(void) | |
166 | { | |
167 | pci_unregister_driver(&netcell_pci_driver); | |
168 | } | |
169 | ||
170 | module_init(netcell_init); | |
171 | module_exit(netcell_exit); | |
172 | ||
173 | MODULE_AUTHOR("Alan Cox"); | |
174 | MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID"); | |
175 | MODULE_LICENSE("GPL"); | |
176 | MODULE_DEVICE_TABLE(pci, netcell_pci_tbl); | |
177 | MODULE_VERSION(DRV_VERSION); | |
178 |