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
8 * (c) 2006 Red Hat <alan@redhat.com>
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>
22 #define DRV_NAME "pata_marvell"
23 #define DRV_VERSION "0.1.4"
26 * marvell_pre_reset - check for 40/80 pin
28 * @deadline: deadline jiffies for the operation
30 * Perform the PATA port setup we need.
33 static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
35 struct ata_port *ap = link->ap;
36 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
41 /* Check if our port is enabled */
43 barp = pci_iomap(pdev, 5, 0x10);
47 for(i = 0; i <= 0x0F; i++)
48 printk("%02X:%02X ", i, ioread8(barp + i));
51 devices = ioread32(barp + 0x0C);
52 pci_iounmap(pdev, barp);
54 if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
55 (!(devices & 0x10))) /* PATA enable ? */
58 return ata_std_prereset(link, deadline);
61 static int marvell_cable_detect(struct ata_port *ap)
67 if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
68 return ATA_CBL_PATA40;
69 return ATA_CBL_PATA80;
70 case 1: /* Legacy SATA port */
75 return 0; /* Our BUG macro needs the right markup */
79 * marvell_error_handler - Setup and error handler
83 * None (inherited from caller).
86 static void marvell_error_handler(struct ata_port *ap)
88 return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset,
89 NULL, ata_std_postreset);
92 /* No PIO or DMA methods needed for this device */
94 static struct scsi_host_template marvell_sht = {
95 .module = THIS_MODULE,
97 .ioctl = ata_scsi_ioctl,
98 .queuecommand = ata_scsi_queuecmd,
99 .can_queue = ATA_DEF_QUEUE,
100 .this_id = ATA_SHT_THIS_ID,
101 .sg_tablesize = LIBATA_MAX_PRD,
102 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
103 .emulated = ATA_SHT_EMULATED,
104 .use_clustering = ATA_SHT_USE_CLUSTERING,
105 .proc_name = DRV_NAME,
106 .dma_boundary = ATA_DMA_BOUNDARY,
107 .slave_configure = ata_scsi_slave_config,
108 .slave_destroy = ata_scsi_slave_destroy,
109 /* Use standard CHS mapping rules */
110 .bios_param = ata_std_bios_param,
113 static const struct ata_port_operations marvell_ops = {
114 /* Task file is PCI ATA format, use helpers */
115 .tf_load = ata_tf_load,
116 .tf_read = ata_tf_read,
117 .check_status = ata_check_status,
118 .exec_command = ata_exec_command,
119 .dev_select = ata_std_dev_select,
121 .freeze = ata_bmdma_freeze,
122 .thaw = ata_bmdma_thaw,
123 .error_handler = marvell_error_handler,
124 .post_internal_cmd = ata_bmdma_post_internal_cmd,
125 .cable_detect = marvell_cable_detect,
127 /* BMDMA handling is PCI ATA format, use helpers */
128 .bmdma_setup = ata_bmdma_setup,
129 .bmdma_start = ata_bmdma_start,
130 .bmdma_stop = ata_bmdma_stop,
131 .bmdma_status = ata_bmdma_status,
132 .qc_prep = ata_qc_prep,
133 .qc_issue = ata_qc_issue_prot,
134 .data_xfer = ata_data_xfer,
136 /* Timeout handling */
137 .irq_handler = ata_interrupt,
138 .irq_clear = ata_bmdma_irq_clear,
139 .irq_on = ata_irq_on,
141 /* Generic PATA PCI ATA helpers */
142 .port_start = ata_port_start,
147 * marvell_init_one - Register Marvell ATA PCI device with kernel services
148 * @pdev: PCI device to register
149 * @ent: Entry in marvell_pci_tbl matching with @pdev
151 * Called from kernel PCI layer.
154 * Inherited from PCI layer (may sleep).
157 * Zero on success, or -ERRNO value.
160 static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
162 static const struct ata_port_info info = {
164 .flags = ATA_FLAG_SLAVE_POSS,
168 .udma_mask = ATA_UDMA5,
170 .port_ops = &marvell_ops,
172 static const struct ata_port_info info_sata = {
174 /* Slave possible as its magically mapped not real */
175 .flags = ATA_FLAG_SLAVE_POSS,
179 .udma_mask = ATA_UDMA6,
181 .port_ops = &marvell_ops,
183 const struct ata_port_info *ppi[] = { &info, &info_sata };
185 if (pdev->device == 0x6101)
186 ppi[1] = &ata_dummy_port_info;
188 return ata_pci_init_one(pdev, ppi);
191 static const struct pci_device_id marvell_pci_tbl[] = {
192 { PCI_DEVICE(0x11AB, 0x6101), },
193 { PCI_DEVICE(0x11AB, 0x6121), },
194 { PCI_DEVICE(0x11AB, 0x6123), },
195 { PCI_DEVICE(0x11AB, 0x6145), },
196 { } /* terminate list */
199 static struct pci_driver marvell_pci_driver = {
201 .id_table = marvell_pci_tbl,
202 .probe = marvell_init_one,
203 .remove = ata_pci_remove_one,
205 .suspend = ata_pci_device_suspend,
206 .resume = ata_pci_device_resume,
210 static int __init marvell_init(void)
212 return pci_register_driver(&marvell_pci_driver);
215 static void __exit marvell_exit(void)
217 pci_unregister_driver(&marvell_pci_driver);
220 module_init(marvell_init);
221 module_exit(marvell_exit);
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);