blob: ae9feb1ba8f74284ed33828bad85476c3b13623f [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 *
Alan Coxab771632008-10-27 15:09:10 +00008 * (c) 2006 Red Hat
Alan Cox75742cb2006-10-16 16:40:06 +01009 */
10
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/pci.h>
Alan Cox75742cb2006-10-16 16:40:06 +010014#include <linux/blkdev.h>
15#include <linux/delay.h>
16#include <linux/device.h>
17#include <scsi/scsi_host.h>
18#include <linux/libata.h>
19#include <linux/ata.h>
20
21#define DRV_NAME "pata_marvell"
Alan Cox5b66c822008-09-03 14:48:34 +010022#define DRV_VERSION "0.1.6"
23
24/**
25 * marvell_pata_active - check if PATA is active
26 * @pdev: PCI device
27 *
28 * Returns 1 if the PATA port may be active. We know how to check this
29 * for the 6145 but not the other devices
30 */
31
32static int marvell_pata_active(struct pci_dev *pdev)
33{
34 int i;
35 u32 devices;
36 void __iomem *barp;
37
38 /* We don't yet know how to do this for other devices */
39 if (pdev->device != 0x6145)
Jeff Garzik4fca3772011-02-15 01:13:24 -050040 return 1;
Alan Cox5b66c822008-09-03 14:48:34 +010041
42 barp = pci_iomap(pdev, 5, 0x10);
43 if (barp == NULL)
44 return -ENOMEM;
45
46 printk("BAR5:");
47 for(i = 0; i <= 0x0F; i++)
48 printk("%02X:%02X ", i, ioread8(barp + i));
49 printk("\n");
50
51 devices = ioread32(barp + 0x0C);
52 pci_iounmap(pdev, barp);
53
54 if (devices & 0x10)
55 return 1;
56 return 0;
57}
Alan Cox75742cb2006-10-16 16:40:06 +010058
59/**
Bartlomiej Zolnierkiewicz2a2beac92009-12-03 20:32:12 +010060 * marvell_pre_reset - probe begin
Tejun Heocc0680a2007-08-06 18:36:23 +090061 * @link: link
Tejun Heod4b2bab2007-02-02 16:50:52 +090062 * @deadline: deadline jiffies for the operation
Alan Cox75742cb2006-10-16 16:40:06 +010063 *
64 * Perform the PATA port setup we need.
65 */
66
Tejun Heocc0680a2007-08-06 18:36:23 +090067static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
Alan Cox75742cb2006-10-16 16:40:06 +010068{
Tejun Heocc0680a2007-08-06 18:36:23 +090069 struct ata_port *ap = link->ap;
Alan Cox75742cb2006-10-16 16:40:06 +010070 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
Alan Cox75742cb2006-10-16 16:40:06 +010071
Alan Cox5b66c822008-09-03 14:48:34 +010072 if (pdev->device == 0x6145 && ap->port_no == 0 &&
73 !marvell_pata_active(pdev)) /* PATA enable ? */
74 return -ENOENT;
Jeff Garzik27c78b32007-03-09 09:41:19 -050075
Tejun Heo9363c382008-04-07 22:47:16 +090076 return ata_sff_prereset(link, deadline);
Alan Cox307c6052007-03-07 16:48:09 +000077}
Alan Cox75742cb2006-10-16 16:40:06 +010078
Alan Cox307c6052007-03-07 16:48:09 +000079static int marvell_cable_detect(struct ata_port *ap)
80{
Alan Cox75742cb2006-10-16 16:40:06 +010081 /* Cable type */
82 switch(ap->port_no)
83 {
Jeff Garzik6e9d8622006-10-21 15:54:13 -040084 case 0:
Tejun Heo0d5ff562007-02-01 15:06:36 +090085 if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
Alan Cox307c6052007-03-07 16:48:09 +000086 return ATA_CBL_PATA40;
87 return ATA_CBL_PATA80;
Jeff Garzik6e9d8622006-10-21 15:54:13 -040088 case 1: /* Legacy SATA port */
Alan Cox307c6052007-03-07 16:48:09 +000089 return ATA_CBL_SATA;
Alan Cox75742cb2006-10-16 16:40:06 +010090 }
Tejun Heod4b2bab2007-02-02 16:50:52 +090091
Alan Cox307c6052007-03-07 16:48:09 +000092 BUG();
93 return 0; /* Our BUG macro needs the right markup */
Alan Cox75742cb2006-10-16 16:40:06 +010094}
95
Alan Cox75742cb2006-10-16 16:40:06 +010096/* No PIO or DMA methods needed for this device */
97
98static struct scsi_host_template marvell_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +090099 ATA_BMDMA_SHT(DRV_NAME),
Alan Cox75742cb2006-10-16 16:40:06 +0100100};
101
Tejun Heo029cfd62008-03-25 12:22:49 +0900102static struct ata_port_operations marvell_ops = {
103 .inherits = &ata_bmdma_port_ops,
Alan Cox307c6052007-03-07 16:48:09 +0000104 .cable_detect = marvell_cable_detect,
Tejun Heo887125e2008-03-25 12:22:49 +0900105 .prereset = marvell_pre_reset,
Alan Cox75742cb2006-10-16 16:40:06 +0100106};
107
108
109/**
110 * marvell_init_one - Register Marvell ATA PCI device with kernel services
111 * @pdev: PCI device to register
112 * @ent: Entry in marvell_pci_tbl matching with @pdev
113 *
114 * Called from kernel PCI layer.
115 *
116 * LOCKING:
117 * Inherited from PCI layer (may sleep).
118 *
119 * RETURNS:
120 * Zero on success, or -ERRNO value.
121 */
122
123static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
124{
Tejun Heo1626aeb2007-05-04 12:43:58 +0200125 static const struct ata_port_info info = {
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400126 .flags = ATA_FLAG_SLAVE_POSS,
Alan Cox75742cb2006-10-16 16:40:06 +0100127
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100128 .pio_mask = ATA_PIO4,
129 .mwdma_mask = ATA_MWDMA2,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400130 .udma_mask = ATA_UDMA5,
Alan Cox75742cb2006-10-16 16:40:06 +0100131
132 .port_ops = &marvell_ops,
133 };
Tejun Heo1626aeb2007-05-04 12:43:58 +0200134 static const struct ata_port_info info_sata = {
Alan Cox75742cb2006-10-16 16:40:06 +0100135 /* Slave possible as its magically mapped not real */
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400136 .flags = ATA_FLAG_SLAVE_POSS,
Alan Cox75742cb2006-10-16 16:40:06 +0100137
Erik Inge Bolsø14bdef92009-03-14 21:38:24 +0100138 .pio_mask = ATA_PIO4,
139 .mwdma_mask = ATA_MWDMA2,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400140 .udma_mask = ATA_UDMA6,
Alan Cox75742cb2006-10-16 16:40:06 +0100141
142 .port_ops = &marvell_ops,
143 };
Tejun Heo1626aeb2007-05-04 12:43:58 +0200144 const struct ata_port_info *ppi[] = { &info, &info_sata };
Jeff Garzik6e9d8622006-10-21 15:54:13 -0400145
Alan Cox75742cb2006-10-16 16:40:06 +0100146 if (pdev->device == 0x6101)
Tejun Heo1626aeb2007-05-04 12:43:58 +0200147 ppi[1] = &ata_dummy_port_info;
Jeff Garzik6e9d8622006-10-21 15:54:13 -0400148
Christoph Eggercb6643e2010-02-05 16:26:35 +0100149#if defined(CONFIG_SATA_AHCI) || defined(CONFIG_SATA_AHCI_MODULE)
Alan Cox5b66c822008-09-03 14:48:34 +0100150 if (!marvell_pata_active(pdev)) {
151 printk(KERN_INFO DRV_NAME ": PATA port not active, deferring to AHCI driver.\n");
152 return -ENODEV;
153 }
154#endif
Tejun Heo1c5afdf2010-05-19 22:10:22 +0200155 return ata_pci_bmdma_init_one(pdev, ppi, &marvell_sht, NULL, 0);
Alan Cox75742cb2006-10-16 16:40:06 +0100156}
157
158static const struct pci_device_id marvell_pci_tbl[] = {
159 { PCI_DEVICE(0x11AB, 0x6101), },
Alan Coxd36ee182007-08-23 20:19:55 +0100160 { PCI_DEVICE(0x11AB, 0x6121), },
161 { PCI_DEVICE(0x11AB, 0x6123), },
Alan Cox75742cb2006-10-16 16:40:06 +0100162 { PCI_DEVICE(0x11AB, 0x6145), },
Paweł Drewniakf920fe12011-06-24 02:07:35 -0400163 { PCI_DEVICE(0x1B4B, 0x91A0), },
164 { PCI_DEVICE(0x1B4B, 0x91A4), },
165
Alan Cox75742cb2006-10-16 16:40:06 +0100166 { } /* terminate list */
167};
168
169static struct pci_driver marvell_pci_driver = {
170 .name = DRV_NAME,
171 .id_table = marvell_pci_tbl,
172 .probe = marvell_init_one,
173 .remove = ata_pci_remove_one,
Bartlomiej Zolnierkiewicz58eb8cd2014-05-07 17:17:44 +0200174#ifdef CONFIG_PM_SLEEP
Alan30ced0f2006-11-22 16:57:36 +0000175 .suspend = ata_pci_device_suspend,
176 .resume = ata_pci_device_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900177#endif
Alan Cox75742cb2006-10-16 16:40:06 +0100178};
179
Axel Lin2fc75da2012-04-19 13:43:05 +0800180module_pci_driver(marvell_pci_driver);
Alan Cox75742cb2006-10-16 16:40:06 +0100181
182MODULE_AUTHOR("Alan Cox");
183MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
184MODULE_LICENSE("GPL");
185MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
186MODULE_VERSION(DRV_VERSION);