blob: 1c810ea0025374bbb7df98a5da47960690d9d730 [file] [log] [blame]
Alan Cox75742cb2006-10-16 16:40:06 +01001/*
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"
Alan30ced0f2006-11-22 16:57:36 +000023#define DRV_VERSION "0.1.1"
Alan Cox75742cb2006-10-16 16:40:06 +010024
25/**
26 * marvell_pre_reset - check for 40/80 pin
27 * @ap: Port
28 *
29 * Perform the PATA port setup we need.
30 */
31
32static int marvell_pre_reset(struct ata_port *ap)
33{
34 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
35 u32 devices;
Alan Cox75742cb2006-10-16 16:40:06 +010036 void __iomem *barp;
37 int i;
38
39 /* Check if our port is enabled */
40
Jeff Garzik6e9d8622006-10-21 15:54:13 -040041 barp = pci_iomap(pdev, 5, 0x10);
Alan Cox75742cb2006-10-16 16:40:06 +010042 if (barp == NULL)
43 return -ENOMEM;
44 printk("BAR5:");
45 for(i = 0; i <= 0x0F; i++)
46 printk("%02X:%02X ", i, readb(barp + i));
47 printk("\n");
48
49 devices = readl(barp + 0x0C);
Jeff Garzik6e9d8622006-10-21 15:54:13 -040050 pci_iounmap(pdev, barp);
Alan Cox75742cb2006-10-16 16:40:06 +010051
Jeff Garzik6e9d8622006-10-21 15:54:13 -040052 if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
53 (!(devices & 0x10))) /* PATA enable ? */
Alan Cox75742cb2006-10-16 16:40:06 +010054 return -ENOENT;
55
56 /* Cable type */
57 switch(ap->port_no)
58 {
Jeff Garzik6e9d8622006-10-21 15:54:13 -040059 case 0:
Jeff Garzik6e9d8622006-10-21 15:54:13 -040060 if (inb(ap->ioaddr.bmdma_addr + 1) & 1)
Jeff Garzik6e9d8622006-10-21 15:54:13 -040061 ap->cbl = ATA_CBL_PATA40;
Alan099156d2006-11-27 16:37:52 +000062 else
63 ap->cbl = ATA_CBL_PATA80;
64 break;
Jeff Garzik6e9d8622006-10-21 15:54:13 -040065
66 case 1: /* Legacy SATA port */
67 ap->cbl = ATA_CBL_SATA;
68 break;
Alan Cox75742cb2006-10-16 16:40:06 +010069 }
70 return ata_std_prereset(ap);
71}
72
73/**
74 * marvell_error_handler - Setup and error handler
75 * @ap: Port to handle
76 *
77 * LOCKING:
78 * None (inherited from caller).
79 */
80
81static void marvell_error_handler(struct ata_port *ap)
82{
Jeff Garzik6e9d8622006-10-21 15:54:13 -040083 return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset,
84 NULL, ata_std_postreset);
Alan Cox75742cb2006-10-16 16:40:06 +010085}
86
87/* No PIO or DMA methods needed for this device */
88
89static 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,
Alan Cox75742cb2006-10-16 16:40:06 +010097 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
98 .emulated = ATA_SHT_EMULATED,
99 .use_clustering = ATA_SHT_USE_CLUSTERING,
100 .proc_name = DRV_NAME,
101 .dma_boundary = ATA_DMA_BOUNDARY,
102 .slave_configure = ata_scsi_slave_config,
Tejun Heoc972b602006-11-29 12:10:46 +0900103 .slave_destroy = ata_scsi_slave_destroy,
Alan Cox75742cb2006-10-16 16:40:06 +0100104 /* Use standard CHS mapping rules */
105 .bios_param = ata_std_bios_param,
Alan30ced0f2006-11-22 16:57:36 +0000106 .resume = ata_scsi_device_resume,
107 .suspend = ata_scsi_device_suspend,
Alan Cox75742cb2006-10-16 16:40:06 +0100108};
109
110static const struct ata_port_operations marvell_ops = {
111 .port_disable = ata_port_disable,
112
113 /* Task file is PCI ATA format, use helpers */
114 .tf_load = ata_tf_load,
115 .tf_read = ata_tf_read,
116 .check_status = ata_check_status,
117 .exec_command = ata_exec_command,
118 .dev_select = ata_std_dev_select,
119
120 .freeze = ata_bmdma_freeze,
121 .thaw = ata_bmdma_thaw,
122 .error_handler = marvell_error_handler,
123 .post_internal_cmd = ata_bmdma_post_internal_cmd,
124
125 /* BMDMA handling is PCI ATA format, use helpers */
126 .bmdma_setup = ata_bmdma_setup,
127 .bmdma_start = ata_bmdma_start,
128 .bmdma_stop = ata_bmdma_stop,
129 .bmdma_status = ata_bmdma_status,
130 .qc_prep = ata_qc_prep,
131 .qc_issue = ata_qc_issue_prot,
132 .data_xfer = ata_pio_data_xfer,
133
134 /* Timeout handling */
Alan Cox75742cb2006-10-16 16:40:06 +0100135 .irq_handler = ata_interrupt,
136 .irq_clear = ata_bmdma_irq_clear,
137
138 /* Generic PATA PCI ATA helpers */
139 .port_start = ata_port_start,
140 .port_stop = ata_port_stop,
141 .host_stop = ata_host_stop,
142};
143
144
145/**
146 * marvell_init_one - Register Marvell ATA PCI device with kernel services
147 * @pdev: PCI device to register
148 * @ent: Entry in marvell_pci_tbl matching with @pdev
149 *
150 * Called from kernel PCI layer.
151 *
152 * LOCKING:
153 * Inherited from PCI layer (may sleep).
154 *
155 * RETURNS:
156 * Zero on success, or -ERRNO value.
157 */
158
159static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
160{
161 static struct ata_port_info info = {
162 .sht = &marvell_sht,
Jeff Garzik6e9d8622006-10-21 15:54:13 -0400163 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
Alan Cox75742cb2006-10-16 16:40:06 +0100164
165 .pio_mask = 0x1f,
166 .mwdma_mask = 0x07,
167 .udma_mask = 0x3f,
168
169 .port_ops = &marvell_ops,
170 };
171 static struct ata_port_info info_sata = {
172 .sht = &marvell_sht,
173 /* Slave possible as its magically mapped not real */
Jeff Garzik6e9d8622006-10-21 15:54:13 -0400174 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
Alan Cox75742cb2006-10-16 16:40:06 +0100175
176 .pio_mask = 0x1f,
177 .mwdma_mask = 0x07,
178 .udma_mask = 0x7f,
179
180 .port_ops = &marvell_ops,
181 };
182 struct ata_port_info *port_info[2] = { &info, &info_sata };
183 int n_port = 2;
Jeff Garzik6e9d8622006-10-21 15:54:13 -0400184
Alan Cox75742cb2006-10-16 16:40:06 +0100185 if (pdev->device == 0x6101)
186 n_port = 1;
Jeff Garzik6e9d8622006-10-21 15:54:13 -0400187
Alan Cox75742cb2006-10-16 16:40:06 +0100188 return ata_pci_init_one(pdev, port_info, n_port);
189}
190
191static const struct pci_device_id marvell_pci_tbl[] = {
192 { PCI_DEVICE(0x11AB, 0x6101), },
193 { PCI_DEVICE(0x11AB, 0x6145), },
194 { } /* terminate list */
195};
196
197static struct pci_driver marvell_pci_driver = {
198 .name = DRV_NAME,
199 .id_table = marvell_pci_tbl,
200 .probe = marvell_init_one,
201 .remove = ata_pci_remove_one,
Alan30ced0f2006-11-22 16:57:36 +0000202 .suspend = ata_pci_device_suspend,
203 .resume = ata_pci_device_resume,
Alan Cox75742cb2006-10-16 16:40:06 +0100204};
205
206static int __init marvell_init(void)
207{
208 return pci_register_driver(&marvell_pci_driver);
209}
210
211static void __exit marvell_exit(void)
212{
213 pci_unregister_driver(&marvell_pci_driver);
214}
215
216module_init(marvell_init);
217module_exit(marvell_exit);
218
219MODULE_AUTHOR("Alan Cox");
220MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
221MODULE_LICENSE("GPL");
222MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
223MODULE_VERSION(DRV_VERSION);
224