Commit | Line | Data |
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75742cb4 AC |
1 | /* |
2 | * Marvell PATA driver. | |
3 | * | |
4 | * For the moment we drive the PATA port in legacy mode. That | |
5 | * isn't making full use of the device functionality but it is | |
6 | * easy to get working. | |
7 | * | |
8 | * (c) 2006 Red Hat <alan@redhat.com> | |
9 | */ | |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/pci.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/blkdev.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/device.h> | |
18 | #include <scsi/scsi_host.h> | |
19 | #include <linux/libata.h> | |
20 | #include <linux/ata.h> | |
21 | ||
22 | #define DRV_NAME "pata_marvell" | |
23 | #define DRV_VERSION "0.0.4t" | |
24 | ||
25 | /** | |
26 | * marvell_pre_reset - check for 40/80 pin | |
27 | * @ap: Port | |
28 | * | |
29 | * Perform the PATA port setup we need. | |
30 | */ | |
31 | ||
32 | static int marvell_pre_reset(struct ata_port *ap) | |
33 | { | |
34 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
35 | u32 devices; | |
36 | unsigned long bar5; | |
37 | void __iomem *barp; | |
38 | int i; | |
39 | ||
40 | /* Check if our port is enabled */ | |
41 | ||
42 | bar5 = pci_resource_start(pdev, 5); | |
43 | barp = ioremap(bar5, 0x10); | |
44 | if (barp == NULL) | |
45 | return -ENOMEM; | |
46 | printk("BAR5:"); | |
47 | for(i = 0; i <= 0x0F; i++) | |
48 | printk("%02X:%02X ", i, readb(barp + i)); | |
49 | printk("\n"); | |
50 | ||
51 | devices = readl(barp + 0x0C); | |
52 | iounmap(barp); | |
53 | ||
54 | if (pdev->device == 0x6145 && ap->port_no == 0 && !(devices & 0x10)) /* PATA enable ? */ | |
55 | return -ENOENT; | |
56 | ||
57 | /* Cable type */ | |
58 | switch(ap->port_no) | |
59 | { | |
60 | case 0: | |
61 | /* Might be backward, docs unclear */ | |
62 | if(inb(ap->ioaddr.bmdma_addr + 1) & 1) | |
63 | ap->cbl = ATA_CBL_PATA80; | |
64 | else | |
65 | ap->cbl = ATA_CBL_PATA40; | |
66 | ||
67 | case 1: /* Legacy SATA port */ | |
68 | ap->cbl = ATA_CBL_SATA; | |
69 | break; | |
70 | } | |
71 | return ata_std_prereset(ap); | |
72 | } | |
73 | ||
74 | /** | |
75 | * marvell_error_handler - Setup and error handler | |
76 | * @ap: Port to handle | |
77 | * | |
78 | * LOCKING: | |
79 | * None (inherited from caller). | |
80 | */ | |
81 | ||
82 | static void marvell_error_handler(struct ata_port *ap) | |
83 | { | |
84 | return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset, NULL, ata_std_postreset); | |
85 | } | |
86 | ||
87 | /* No PIO or DMA methods needed for this device */ | |
88 | ||
89 | static struct scsi_host_template marvell_sht = { | |
90 | .module = THIS_MODULE, | |
91 | .name = DRV_NAME, | |
92 | .ioctl = ata_scsi_ioctl, | |
93 | .queuecommand = ata_scsi_queuecmd, | |
94 | .can_queue = ATA_DEF_QUEUE, | |
95 | .this_id = ATA_SHT_THIS_ID, | |
96 | .sg_tablesize = LIBATA_MAX_PRD, | |
97 | .max_sectors = ATA_MAX_SECTORS, | |
98 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, | |
99 | .emulated = ATA_SHT_EMULATED, | |
100 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
101 | .proc_name = DRV_NAME, | |
102 | .dma_boundary = ATA_DMA_BOUNDARY, | |
103 | .slave_configure = ata_scsi_slave_config, | |
104 | /* Use standard CHS mapping rules */ | |
105 | .bios_param = ata_std_bios_param, | |
106 | }; | |
107 | ||
108 | static const struct ata_port_operations marvell_ops = { | |
109 | .port_disable = ata_port_disable, | |
110 | ||
111 | /* Task file is PCI ATA format, use helpers */ | |
112 | .tf_load = ata_tf_load, | |
113 | .tf_read = ata_tf_read, | |
114 | .check_status = ata_check_status, | |
115 | .exec_command = ata_exec_command, | |
116 | .dev_select = ata_std_dev_select, | |
117 | ||
118 | .freeze = ata_bmdma_freeze, | |
119 | .thaw = ata_bmdma_thaw, | |
120 | .error_handler = marvell_error_handler, | |
121 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
122 | ||
123 | /* BMDMA handling is PCI ATA format, use helpers */ | |
124 | .bmdma_setup = ata_bmdma_setup, | |
125 | .bmdma_start = ata_bmdma_start, | |
126 | .bmdma_stop = ata_bmdma_stop, | |
127 | .bmdma_status = ata_bmdma_status, | |
128 | .qc_prep = ata_qc_prep, | |
129 | .qc_issue = ata_qc_issue_prot, | |
130 | .data_xfer = ata_pio_data_xfer, | |
131 | ||
132 | /* Timeout handling */ | |
133 | .eng_timeout = ata_eng_timeout, | |
134 | .irq_handler = ata_interrupt, | |
135 | .irq_clear = ata_bmdma_irq_clear, | |
136 | ||
137 | /* Generic PATA PCI ATA helpers */ | |
138 | .port_start = ata_port_start, | |
139 | .port_stop = ata_port_stop, | |
140 | .host_stop = ata_host_stop, | |
141 | }; | |
142 | ||
143 | ||
144 | /** | |
145 | * marvell_init_one - Register Marvell ATA PCI device with kernel services | |
146 | * @pdev: PCI device to register | |
147 | * @ent: Entry in marvell_pci_tbl matching with @pdev | |
148 | * | |
149 | * Called from kernel PCI layer. | |
150 | * | |
151 | * LOCKING: | |
152 | * Inherited from PCI layer (may sleep). | |
153 | * | |
154 | * RETURNS: | |
155 | * Zero on success, or -ERRNO value. | |
156 | */ | |
157 | ||
158 | static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id) | |
159 | { | |
160 | static struct ata_port_info info = { | |
161 | .sht = &marvell_sht, | |
162 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, | |
163 | ||
164 | .pio_mask = 0x1f, | |
165 | .mwdma_mask = 0x07, | |
166 | .udma_mask = 0x3f, | |
167 | ||
168 | .port_ops = &marvell_ops, | |
169 | }; | |
170 | static struct ata_port_info info_sata = { | |
171 | .sht = &marvell_sht, | |
172 | /* Slave possible as its magically mapped not real */ | |
173 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, | |
174 | ||
175 | .pio_mask = 0x1f, | |
176 | .mwdma_mask = 0x07, | |
177 | .udma_mask = 0x7f, | |
178 | ||
179 | .port_ops = &marvell_ops, | |
180 | }; | |
181 | struct ata_port_info *port_info[2] = { &info, &info_sata }; | |
182 | int n_port = 2; | |
183 | ||
184 | if (pdev->device == 0x6101) | |
185 | n_port = 1; | |
186 | ||
187 | return ata_pci_init_one(pdev, port_info, n_port); | |
188 | } | |
189 | ||
190 | static const struct pci_device_id marvell_pci_tbl[] = { | |
191 | { PCI_DEVICE(0x11AB, 0x6101), }, | |
192 | { PCI_DEVICE(0x11AB, 0x6145), }, | |
193 | { } /* terminate list */ | |
194 | }; | |
195 | ||
196 | static struct pci_driver marvell_pci_driver = { | |
197 | .name = DRV_NAME, | |
198 | .id_table = marvell_pci_tbl, | |
199 | .probe = marvell_init_one, | |
200 | .remove = ata_pci_remove_one, | |
201 | }; | |
202 | ||
203 | static int __init marvell_init(void) | |
204 | { | |
205 | return pci_register_driver(&marvell_pci_driver); | |
206 | } | |
207 | ||
208 | static void __exit marvell_exit(void) | |
209 | { | |
210 | pci_unregister_driver(&marvell_pci_driver); | |
211 | } | |
212 | ||
213 | module_init(marvell_init); | |
214 | module_exit(marvell_exit); | |
215 | ||
216 | MODULE_AUTHOR("Alan Cox"); | |
217 | MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode"); | |
218 | MODULE_LICENSE("GPL"); | |
219 | MODULE_DEVICE_TABLE(pci, marvell_pci_tbl); | |
220 | MODULE_VERSION(DRV_VERSION); | |
221 |