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 "0.0.5u"
26 * marvell_pre_reset - check for 40/80 pin
29 * Perform the PATA port setup we need.
32 static int marvell_pre_reset(struct ata_port *ap)
34 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
39 /* Check if our port is enabled */
41 barp = pci_iomap(pdev, 5, 0x10);
45 for(i = 0; i <= 0x0F; i++)
46 printk("%02X:%02X ", i, readb(barp + i));
49 devices = readl(barp + 0x0C);
50 pci_iounmap(pdev, barp);
52 if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
53 (!(devices & 0x10))) /* PATA enable ? */
60 /* Might be backward, docs unclear */
61 if (inb(ap->ioaddr.bmdma_addr + 1) & 1)
62 ap->cbl = ATA_CBL_PATA80;
64 ap->cbl = ATA_CBL_PATA40;
66 case 1: /* Legacy SATA port */
67 ap->cbl = ATA_CBL_SATA;
70 return ata_std_prereset(ap);
74 * marvell_error_handler - Setup and error handler
78 * None (inherited from caller).
81 static void marvell_error_handler(struct ata_port *ap)
83 return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset,
84 NULL, ata_std_postreset);
87 /* No PIO or DMA methods needed for this device */
89 static struct scsi_host_template marvell_sht = {
90 .module = THIS_MODULE,
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,
108 static const struct ata_port_operations marvell_ops = {
109 .port_disable = ata_port_disable,
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,
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,
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,
132 /* Timeout handling */
133 .irq_handler = ata_interrupt,
134 .irq_clear = ata_bmdma_irq_clear,
136 /* Generic PATA PCI ATA helpers */
137 .port_start = ata_port_start,
138 .port_stop = ata_port_stop,
139 .host_stop = ata_host_stop,
144 * marvell_init_one - Register Marvell ATA PCI device with kernel services
145 * @pdev: PCI device to register
146 * @ent: Entry in marvell_pci_tbl matching with @pdev
148 * Called from kernel PCI layer.
151 * Inherited from PCI layer (may sleep).
154 * Zero on success, or -ERRNO value.
157 static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
159 static struct ata_port_info info = {
161 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
167 .port_ops = &marvell_ops,
169 static struct ata_port_info info_sata = {
171 /* Slave possible as its magically mapped not real */
172 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
178 .port_ops = &marvell_ops,
180 struct ata_port_info *port_info[2] = { &info, &info_sata };
183 if (pdev->device == 0x6101)
186 return ata_pci_init_one(pdev, port_info, n_port);
189 static const struct pci_device_id marvell_pci_tbl[] = {
190 { PCI_DEVICE(0x11AB, 0x6101), },
191 { PCI_DEVICE(0x11AB, 0x6145), },
192 { } /* terminate list */
195 static struct pci_driver marvell_pci_driver = {
197 .id_table = marvell_pci_tbl,
198 .probe = marvell_init_one,
199 .remove = ata_pci_remove_one,
202 static int __init marvell_init(void)
204 return pci_register_driver(&marvell_pci_driver);
207 static void __exit marvell_exit(void)
209 pci_unregister_driver(&marvell_pci_driver);
212 module_init(marvell_init);
213 module_exit(marvell_exit);
215 MODULE_AUTHOR("Alan Cox");
216 MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
217 MODULE_LICENSE("GPL");
218 MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
219 MODULE_VERSION(DRV_VERSION);