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" | |
307c6054 | 23 | #define DRV_VERSION "0.1.4" |
75742cb4 AC |
24 | |
25 | /** | |
26 | * marvell_pre_reset - check for 40/80 pin | |
27 | * @ap: Port | |
d4b2bab4 | 28 | * @deadline: deadline jiffies for the operation |
75742cb4 AC |
29 | * |
30 | * Perform the PATA port setup we need. | |
31 | */ | |
32 | ||
d4b2bab4 | 33 | static int marvell_pre_reset(struct ata_port *ap, unsigned long deadline) |
75742cb4 AC |
34 | { |
35 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
36 | u32 devices; | |
75742cb4 AC |
37 | void __iomem *barp; |
38 | int i; | |
39 | ||
40 | /* Check if our port is enabled */ | |
41 | ||
6e9d8629 | 42 | barp = pci_iomap(pdev, 5, 0x10); |
75742cb4 AC |
43 | if (barp == NULL) |
44 | return -ENOMEM; | |
45 | printk("BAR5:"); | |
46 | for(i = 0; i <= 0x0F; i++) | |
47 | printk("%02X:%02X ", i, readb(barp + i)); | |
48 | printk("\n"); | |
f20b16ff | 49 | |
75742cb4 | 50 | devices = readl(barp + 0x0C); |
6e9d8629 | 51 | pci_iounmap(pdev, barp); |
f20b16ff | 52 | |
6e9d8629 JG |
53 | if ((pdev->device == 0x6145) && (ap->port_no == 0) && |
54 | (!(devices & 0x10))) /* PATA enable ? */ | |
75742cb4 | 55 | return -ENOENT; |
27c78b37 JG |
56 | |
57 | return ata_std_prereset(ap, deadline); | |
307c6054 | 58 | } |
75742cb4 | 59 | |
307c6054 AC |
60 | static int marvell_cable_detect(struct ata_port *ap) |
61 | { | |
75742cb4 AC |
62 | /* Cable type */ |
63 | switch(ap->port_no) | |
64 | { | |
6e9d8629 | 65 | case 0: |
0d5ff566 | 66 | if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1) |
307c6054 AC |
67 | return ATA_CBL_PATA40; |
68 | return ATA_CBL_PATA80; | |
6e9d8629 | 69 | case 1: /* Legacy SATA port */ |
307c6054 | 70 | return ATA_CBL_SATA; |
75742cb4 | 71 | } |
d4b2bab4 | 72 | |
307c6054 AC |
73 | BUG(); |
74 | return 0; /* Our BUG macro needs the right markup */ | |
75742cb4 AC |
75 | } |
76 | ||
77 | /** | |
78 | * marvell_error_handler - Setup and error handler | |
79 | * @ap: Port to handle | |
80 | * | |
81 | * LOCKING: | |
82 | * None (inherited from caller). | |
83 | */ | |
84 | ||
85 | static void marvell_error_handler(struct ata_port *ap) | |
86 | { | |
6e9d8629 JG |
87 | return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset, |
88 | NULL, ata_std_postreset); | |
75742cb4 AC |
89 | } |
90 | ||
91 | /* No PIO or DMA methods needed for this device */ | |
92 | ||
93 | static struct scsi_host_template marvell_sht = { | |
94 | .module = THIS_MODULE, | |
95 | .name = DRV_NAME, | |
96 | .ioctl = ata_scsi_ioctl, | |
97 | .queuecommand = ata_scsi_queuecmd, | |
98 | .can_queue = ATA_DEF_QUEUE, | |
99 | .this_id = ATA_SHT_THIS_ID, | |
100 | .sg_tablesize = LIBATA_MAX_PRD, | |
75742cb4 AC |
101 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
102 | .emulated = ATA_SHT_EMULATED, | |
103 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
104 | .proc_name = DRV_NAME, | |
105 | .dma_boundary = ATA_DMA_BOUNDARY, | |
106 | .slave_configure = ata_scsi_slave_config, | |
c972b60b | 107 | .slave_destroy = ata_scsi_slave_destroy, |
75742cb4 AC |
108 | /* Use standard CHS mapping rules */ |
109 | .bios_param = ata_std_bios_param, | |
110 | }; | |
111 | ||
112 | static const struct ata_port_operations marvell_ops = { | |
113 | .port_disable = ata_port_disable, | |
114 | ||
115 | /* Task file is PCI ATA format, use helpers */ | |
116 | .tf_load = ata_tf_load, | |
117 | .tf_read = ata_tf_read, | |
118 | .check_status = ata_check_status, | |
119 | .exec_command = ata_exec_command, | |
120 | .dev_select = ata_std_dev_select, | |
121 | ||
122 | .freeze = ata_bmdma_freeze, | |
123 | .thaw = ata_bmdma_thaw, | |
124 | .error_handler = marvell_error_handler, | |
125 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
307c6054 | 126 | .cable_detect = marvell_cable_detect, |
75742cb4 AC |
127 | |
128 | /* BMDMA handling is PCI ATA format, use helpers */ | |
129 | .bmdma_setup = ata_bmdma_setup, | |
130 | .bmdma_start = ata_bmdma_start, | |
131 | .bmdma_stop = ata_bmdma_stop, | |
132 | .bmdma_status = ata_bmdma_status, | |
133 | .qc_prep = ata_qc_prep, | |
134 | .qc_issue = ata_qc_issue_prot, | |
0d5ff566 | 135 | .data_xfer = ata_data_xfer, |
75742cb4 AC |
136 | |
137 | /* Timeout handling */ | |
75742cb4 AC |
138 | .irq_handler = ata_interrupt, |
139 | .irq_clear = ata_bmdma_irq_clear, | |
246ce3b6 AI |
140 | .irq_on = ata_irq_on, |
141 | .irq_ack = ata_irq_ack, | |
75742cb4 AC |
142 | |
143 | /* Generic PATA PCI ATA helpers */ | |
144 | .port_start = ata_port_start, | |
75742cb4 AC |
145 | }; |
146 | ||
147 | ||
148 | /** | |
149 | * marvell_init_one - Register Marvell ATA PCI device with kernel services | |
150 | * @pdev: PCI device to register | |
151 | * @ent: Entry in marvell_pci_tbl matching with @pdev | |
152 | * | |
153 | * Called from kernel PCI layer. | |
154 | * | |
155 | * LOCKING: | |
156 | * Inherited from PCI layer (may sleep). | |
157 | * | |
158 | * RETURNS: | |
159 | * Zero on success, or -ERRNO value. | |
160 | */ | |
161 | ||
162 | static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id) | |
163 | { | |
1626aeb8 | 164 | static const struct ata_port_info info = { |
75742cb4 | 165 | .sht = &marvell_sht, |
1d2808fd | 166 | .flags = ATA_FLAG_SLAVE_POSS, |
75742cb4 AC |
167 | |
168 | .pio_mask = 0x1f, | |
169 | .mwdma_mask = 0x07, | |
bf6263a8 | 170 | .udma_mask = ATA_UDMA5, |
75742cb4 AC |
171 | |
172 | .port_ops = &marvell_ops, | |
173 | }; | |
1626aeb8 | 174 | static const struct ata_port_info info_sata = { |
75742cb4 AC |
175 | .sht = &marvell_sht, |
176 | /* Slave possible as its magically mapped not real */ | |
1d2808fd | 177 | .flags = ATA_FLAG_SLAVE_POSS, |
75742cb4 AC |
178 | |
179 | .pio_mask = 0x1f, | |
180 | .mwdma_mask = 0x07, | |
bf6263a8 | 181 | .udma_mask = ATA_UDMA6, |
75742cb4 AC |
182 | |
183 | .port_ops = &marvell_ops, | |
184 | }; | |
1626aeb8 | 185 | const struct ata_port_info *ppi[] = { &info, &info_sata }; |
6e9d8629 | 186 | |
75742cb4 | 187 | if (pdev->device == 0x6101) |
1626aeb8 | 188 | ppi[1] = &ata_dummy_port_info; |
6e9d8629 | 189 | |
1626aeb8 | 190 | return ata_pci_init_one(pdev, ppi); |
75742cb4 AC |
191 | } |
192 | ||
193 | static const struct pci_device_id marvell_pci_tbl[] = { | |
194 | { PCI_DEVICE(0x11AB, 0x6101), }, | |
195 | { PCI_DEVICE(0x11AB, 0x6145), }, | |
196 | { } /* terminate list */ | |
197 | }; | |
198 | ||
199 | static struct pci_driver marvell_pci_driver = { | |
200 | .name = DRV_NAME, | |
201 | .id_table = marvell_pci_tbl, | |
202 | .probe = marvell_init_one, | |
203 | .remove = ata_pci_remove_one, | |
438ac6d5 | 204 | #ifdef CONFIG_PM |
30ced0f0 A |
205 | .suspend = ata_pci_device_suspend, |
206 | .resume = ata_pci_device_resume, | |
438ac6d5 | 207 | #endif |
75742cb4 AC |
208 | }; |
209 | ||
210 | static int __init marvell_init(void) | |
211 | { | |
212 | return pci_register_driver(&marvell_pci_driver); | |
213 | } | |
214 | ||
215 | static void __exit marvell_exit(void) | |
216 | { | |
217 | pci_unregister_driver(&marvell_pci_driver); | |
218 | } | |
219 | ||
220 | module_init(marvell_init); | |
221 | module_exit(marvell_exit); | |
222 | ||
223 | MODULE_AUTHOR("Alan Cox"); | |
224 | MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode"); | |
225 | MODULE_LICENSE("GPL"); | |
226 | MODULE_DEVICE_TABLE(pci, marvell_pci_tbl); | |
227 | MODULE_VERSION(DRV_VERSION); | |
228 |