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
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 ? */
55 return ata_std_prereset(ap);
58 static int marvell_cable_detect(struct ata_port *ap)
64 if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
65 return ATA_CBL_PATA40;
66 return ATA_CBL_PATA80;
67 case 1: /* Legacy SATA port */
71 return 0; /* Our BUG macro needs the right markup */
75 * marvell_error_handler - Setup and error handler
79 * None (inherited from caller).
82 static void marvell_error_handler(struct ata_port *ap)
84 return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset,
85 NULL, ata_std_postreset);
88 /* No PIO or DMA methods needed for this device */
90 static struct scsi_host_template marvell_sht = {
91 .module = THIS_MODULE,
93 .ioctl = ata_scsi_ioctl,
94 .queuecommand = ata_scsi_queuecmd,
95 .can_queue = ATA_DEF_QUEUE,
96 .this_id = ATA_SHT_THIS_ID,
97 .sg_tablesize = LIBATA_MAX_PRD,
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 .slave_destroy = ata_scsi_slave_destroy,
105 /* Use standard CHS mapping rules */
106 .bios_param = ata_std_bios_param,
108 .resume = ata_scsi_device_resume,
109 .suspend = ata_scsi_device_suspend,
113 static const struct ata_port_operations marvell_ops = {
114 .port_disable = ata_port_disable,
116 /* Task file is PCI ATA format, use helpers */
117 .tf_load = ata_tf_load,
118 .tf_read = ata_tf_read,
119 .check_status = ata_check_status,
120 .exec_command = ata_exec_command,
121 .dev_select = ata_std_dev_select,
123 .freeze = ata_bmdma_freeze,
124 .thaw = ata_bmdma_thaw,
125 .error_handler = marvell_error_handler,
126 .post_internal_cmd = ata_bmdma_post_internal_cmd,
127 .cable_detect = marvell_cable_detect,
129 /* BMDMA handling is PCI ATA format, use helpers */
130 .bmdma_setup = ata_bmdma_setup,
131 .bmdma_start = ata_bmdma_start,
132 .bmdma_stop = ata_bmdma_stop,
133 .bmdma_status = ata_bmdma_status,
134 .qc_prep = ata_qc_prep,
135 .qc_issue = ata_qc_issue_prot,
136 .data_xfer = ata_data_xfer,
138 /* Timeout handling */
139 .irq_handler = ata_interrupt,
140 .irq_clear = ata_bmdma_irq_clear,
141 .irq_on = ata_irq_on,
142 .irq_ack = ata_irq_ack,
144 /* Generic PATA PCI ATA helpers */
145 .port_start = ata_port_start,
150 * marvell_init_one - Register Marvell ATA PCI device with kernel services
151 * @pdev: PCI device to register
152 * @ent: Entry in marvell_pci_tbl matching with @pdev
154 * Called from kernel PCI layer.
157 * Inherited from PCI layer (may sleep).
160 * Zero on success, or -ERRNO value.
163 static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
165 static struct ata_port_info info = {
167 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
173 .port_ops = &marvell_ops,
175 static struct ata_port_info info_sata = {
177 /* Slave possible as its magically mapped not real */
178 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
184 .port_ops = &marvell_ops,
186 struct ata_port_info *port_info[2] = { &info, &info_sata };
189 if (pdev->device == 0x6101)
192 return ata_pci_init_one(pdev, port_info, n_port);
195 static const struct pci_device_id marvell_pci_tbl[] = {
196 { PCI_DEVICE(0x11AB, 0x6101), },
197 { PCI_DEVICE(0x11AB, 0x6145), },
198 { } /* terminate list */
201 static struct pci_driver marvell_pci_driver = {
203 .id_table = marvell_pci_tbl,
204 .probe = marvell_init_one,
205 .remove = ata_pci_remove_one,
207 .suspend = ata_pci_device_suspend,
208 .resume = ata_pci_device_resume,
212 static int __init marvell_init(void)
214 return pci_register_driver(&marvell_pci_driver);
217 static void __exit marvell_exit(void)
219 pci_unregister_driver(&marvell_pci_driver);
222 module_init(marvell_init);
223 module_exit(marvell_exit);
225 MODULE_AUTHOR("Alan Cox");
226 MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
227 MODULE_LICENSE("GPL");
228 MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
229 MODULE_VERSION(DRV_VERSION);