blob: 87594c04d3a371d7ce69c24a0b8c018455e2f8c2 [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"
Alan Cox307c6052007-03-07 16:48:09 +000023#define DRV_VERSION "0.1.4"
Alan Cox75742cb2006-10-16 16:40:06 +010024
25/**
26 * marvell_pre_reset - check for 40/80 pin
27 * @ap: Port
Tejun Heod4b2bab2007-02-02 16:50:52 +090028 * @deadline: deadline jiffies for the operation
Alan Cox75742cb2006-10-16 16:40:06 +010029 *
30 * Perform the PATA port setup we need.
31 */
32
Tejun Heod4b2bab2007-02-02 16:50:52 +090033static int marvell_pre_reset(struct ata_port *ap, unsigned long deadline)
Alan Cox75742cb2006-10-16 16:40:06 +010034{
35 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
36 u32 devices;
Alan Cox75742cb2006-10-16 16:40:06 +010037 void __iomem *barp;
38 int i;
39
40 /* Check if our port is enabled */
41
Jeff Garzik6e9d8622006-10-21 15:54:13 -040042 barp = pci_iomap(pdev, 5, 0x10);
Alan Cox75742cb2006-10-16 16:40:06 +010043 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");
Jeff Garzikf20b16f2006-12-11 11:14:06 -050049
Alan Cox75742cb2006-10-16 16:40:06 +010050 devices = readl(barp + 0x0C);
Jeff Garzik6e9d8622006-10-21 15:54:13 -040051 pci_iounmap(pdev, barp);
Jeff Garzikf20b16f2006-12-11 11:14:06 -050052
Jeff Garzik6e9d8622006-10-21 15:54:13 -040053 if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
54 (!(devices & 0x10))) /* PATA enable ? */
Alan Cox75742cb2006-10-16 16:40:06 +010055 return -ENOENT;
Jeff Garzik27c78b32007-03-09 09:41:19 -050056
57 return ata_std_prereset(ap, deadline);
Alan Cox307c6052007-03-07 16:48:09 +000058}
Alan Cox75742cb2006-10-16 16:40:06 +010059
Alan Cox307c6052007-03-07 16:48:09 +000060static int marvell_cable_detect(struct ata_port *ap)
61{
Alan Cox75742cb2006-10-16 16:40:06 +010062 /* Cable type */
63 switch(ap->port_no)
64 {
Jeff Garzik6e9d8622006-10-21 15:54:13 -040065 case 0:
Tejun Heo0d5ff562007-02-01 15:06:36 +090066 if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
Alan Cox307c6052007-03-07 16:48:09 +000067 return ATA_CBL_PATA40;
68 return ATA_CBL_PATA80;
Jeff Garzik6e9d8622006-10-21 15:54:13 -040069 case 1: /* Legacy SATA port */
Alan Cox307c6052007-03-07 16:48:09 +000070 return ATA_CBL_SATA;
Alan Cox75742cb2006-10-16 16:40:06 +010071 }
Tejun Heod4b2bab2007-02-02 16:50:52 +090072
Alan Cox307c6052007-03-07 16:48:09 +000073 BUG();
74 return 0; /* Our BUG macro needs the right markup */
Alan Cox75742cb2006-10-16 16:40:06 +010075}
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
85static void marvell_error_handler(struct ata_port *ap)
86{
Jeff Garzik6e9d8622006-10-21 15:54:13 -040087 return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset,
88 NULL, ata_std_postreset);
Alan Cox75742cb2006-10-16 16:40:06 +010089}
90
91/* No PIO or DMA methods needed for this device */
92
93static 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,
Alan Cox75742cb2006-10-16 16:40:06 +0100101 .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,
Tejun Heoc972b602006-11-29 12:10:46 +0900107 .slave_destroy = ata_scsi_slave_destroy,
Alan Cox75742cb2006-10-16 16:40:06 +0100108 /* Use standard CHS mapping rules */
109 .bios_param = ata_std_bios_param,
110};
111
112static 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,
Alan Cox307c6052007-03-07 16:48:09 +0000126 .cable_detect = marvell_cable_detect,
Alan Cox75742cb2006-10-16 16:40:06 +0100127
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,
Tejun Heo0d5ff562007-02-01 15:06:36 +0900135 .data_xfer = ata_data_xfer,
Alan Cox75742cb2006-10-16 16:40:06 +0100136
137 /* Timeout handling */
Alan Cox75742cb2006-10-16 16:40:06 +0100138 .irq_handler = ata_interrupt,
139 .irq_clear = ata_bmdma_irq_clear,
Akira Iguchi246ce3b2007-01-26 16:27:58 +0900140 .irq_on = ata_irq_on,
141 .irq_ack = ata_irq_ack,
Alan Cox75742cb2006-10-16 16:40:06 +0100142
143 /* Generic PATA PCI ATA helpers */
144 .port_start = ata_port_start,
Alan Cox75742cb2006-10-16 16:40:06 +0100145};
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
162static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
163{
Tejun Heo1626aeb2007-05-04 12:43:58 +0200164 static const struct ata_port_info info = {
Alan Cox75742cb2006-10-16 16:40:06 +0100165 .sht = &marvell_sht,
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400166 .flags = ATA_FLAG_SLAVE_POSS,
Alan Cox75742cb2006-10-16 16:40:06 +0100167
168 .pio_mask = 0x1f,
169 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400170 .udma_mask = ATA_UDMA5,
Alan Cox75742cb2006-10-16 16:40:06 +0100171
172 .port_ops = &marvell_ops,
173 };
Tejun Heo1626aeb2007-05-04 12:43:58 +0200174 static const struct ata_port_info info_sata = {
Alan Cox75742cb2006-10-16 16:40:06 +0100175 .sht = &marvell_sht,
176 /* Slave possible as its magically mapped not real */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400177 .flags = ATA_FLAG_SLAVE_POSS,
Alan Cox75742cb2006-10-16 16:40:06 +0100178
179 .pio_mask = 0x1f,
180 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400181 .udma_mask = ATA_UDMA6,
Alan Cox75742cb2006-10-16 16:40:06 +0100182
183 .port_ops = &marvell_ops,
184 };
Tejun Heo1626aeb2007-05-04 12:43:58 +0200185 const struct ata_port_info *ppi[] = { &info, &info_sata };
Jeff Garzik6e9d8622006-10-21 15:54:13 -0400186
Alan Cox75742cb2006-10-16 16:40:06 +0100187 if (pdev->device == 0x6101)
Tejun Heo1626aeb2007-05-04 12:43:58 +0200188 ppi[1] = &ata_dummy_port_info;
Jeff Garzik6e9d8622006-10-21 15:54:13 -0400189
Tejun Heo1626aeb2007-05-04 12:43:58 +0200190 return ata_pci_init_one(pdev, ppi);
Alan Cox75742cb2006-10-16 16:40:06 +0100191}
192
193static const struct pci_device_id marvell_pci_tbl[] = {
194 { PCI_DEVICE(0x11AB, 0x6101), },
195 { PCI_DEVICE(0x11AB, 0x6145), },
196 { } /* terminate list */
197};
198
199static 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,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900204#ifdef CONFIG_PM
Alan30ced0f2006-11-22 16:57:36 +0000205 .suspend = ata_pci_device_suspend,
206 .resume = ata_pci_device_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900207#endif
Alan Cox75742cb2006-10-16 16:40:06 +0100208};
209
210static int __init marvell_init(void)
211{
212 return pci_register_driver(&marvell_pci_driver);
213}
214
215static void __exit marvell_exit(void)
216{
217 pci_unregister_driver(&marvell_pci_driver);
218}
219
220module_init(marvell_init);
221module_exit(marvell_exit);
222
223MODULE_AUTHOR("Alan Cox");
224MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
225MODULE_LICENSE("GPL");
226MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
227MODULE_VERSION(DRV_VERSION);
228