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ata: use module_pci_driver
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1/*
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 *
ab771630 8 * (c) 2006 Red Hat
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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"
5b66c829 23#define DRV_VERSION "0.1.6"
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24
25/**
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26 * marvell_pata_active - check if PATA is active
27 * @pdev: PCI device
75742cb4 28 *
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29 * Returns 1 if the PATA port may be active. We know how to check this
30 * for the 6145 but not the other devices
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31 */
32
5b66c829 33static int marvell_pata_active(struct pci_dev *pdev)
75742cb4 34{
5b66c829 35 int i;
75742cb4 36 u32 devices;
75742cb4 37 void __iomem *barp;
75742cb4 38
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39 /* We don't yet know how to do this for other devices */
40 if (pdev->device != 0x6145)
4fca377f 41 return 1;
75742cb4 42
6e9d8629 43 barp = pci_iomap(pdev, 5, 0x10);
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44 if (barp == NULL)
45 return -ENOMEM;
5b66c829 46
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47 printk("BAR5:");
48 for(i = 0; i <= 0x0F; i++)
90925d30 49 printk("%02X:%02X ", i, ioread8(barp + i));
75742cb4 50 printk("\n");
f20b16ff 51
90925d30 52 devices = ioread32(barp + 0x0C);
6e9d8629 53 pci_iounmap(pdev, barp);
f20b16ff 54
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55 if (devices & 0x10)
56 return 1;
57 return 0;
58}
59
60/**
2a2beac9 61 * marvell_pre_reset - probe begin
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62 * @link: link
63 * @deadline: deadline jiffies for the operation
64 *
65 * Perform the PATA port setup we need.
66 */
67
68static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
69{
70 struct ata_port *ap = link->ap;
71 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
72
73 if (pdev->device == 0x6145 && ap->port_no == 0 &&
74 !marvell_pata_active(pdev)) /* PATA enable ? */
75 return -ENOENT;
27c78b37 76
9363c382 77 return ata_sff_prereset(link, deadline);
307c6054 78}
75742cb4 79
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80static int marvell_cable_detect(struct ata_port *ap)
81{
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82 /* Cable type */
83 switch(ap->port_no)
84 {
6e9d8629 85 case 0:
0d5ff566 86 if (ioread8(ap->ioaddr.bmdma_addr + 1) & 1)
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87 return ATA_CBL_PATA40;
88 return ATA_CBL_PATA80;
6e9d8629 89 case 1: /* Legacy SATA port */
307c6054 90 return ATA_CBL_SATA;
75742cb4 91 }
d4b2bab4 92
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93 BUG();
94 return 0; /* Our BUG macro needs the right markup */
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95}
96
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97/* No PIO or DMA methods needed for this device */
98
99static struct scsi_host_template marvell_sht = {
68d1d07b 100 ATA_BMDMA_SHT(DRV_NAME),
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101};
102
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103static struct ata_port_operations marvell_ops = {
104 .inherits = &ata_bmdma_port_ops,
307c6054 105 .cable_detect = marvell_cable_detect,
887125e3 106 .prereset = marvell_pre_reset,
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107};
108
109
110/**
111 * marvell_init_one - Register Marvell ATA PCI device with kernel services
112 * @pdev: PCI device to register
113 * @ent: Entry in marvell_pci_tbl matching with @pdev
114 *
115 * Called from kernel PCI layer.
116 *
117 * LOCKING:
118 * Inherited from PCI layer (may sleep).
119 *
120 * RETURNS:
121 * Zero on success, or -ERRNO value.
122 */
123
124static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
125{
1626aeb8 126 static const struct ata_port_info info = {
1d2808fd 127 .flags = ATA_FLAG_SLAVE_POSS,
75742cb4 128
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129 .pio_mask = ATA_PIO4,
130 .mwdma_mask = ATA_MWDMA2,
bf6263a8 131 .udma_mask = ATA_UDMA5,
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132
133 .port_ops = &marvell_ops,
134 };
1626aeb8 135 static const struct ata_port_info info_sata = {
75742cb4 136 /* Slave possible as its magically mapped not real */
1d2808fd 137 .flags = ATA_FLAG_SLAVE_POSS,
75742cb4 138
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139 .pio_mask = ATA_PIO4,
140 .mwdma_mask = ATA_MWDMA2,
bf6263a8 141 .udma_mask = ATA_UDMA6,
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142
143 .port_ops = &marvell_ops,
144 };
1626aeb8 145 const struct ata_port_info *ppi[] = { &info, &info_sata };
6e9d8629 146
75742cb4 147 if (pdev->device == 0x6101)
1626aeb8 148 ppi[1] = &ata_dummy_port_info;
6e9d8629 149
cb6643e1 150#if defined(CONFIG_SATA_AHCI) || defined(CONFIG_SATA_AHCI_MODULE)
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151 if (!marvell_pata_active(pdev)) {
152 printk(KERN_INFO DRV_NAME ": PATA port not active, deferring to AHCI driver.\n");
153 return -ENODEV;
154 }
155#endif
1c5afdf7 156 return ata_pci_bmdma_init_one(pdev, ppi, &marvell_sht, NULL, 0);
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157}
158
159static const struct pci_device_id marvell_pci_tbl[] = {
160 { PCI_DEVICE(0x11AB, 0x6101), },
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161 { PCI_DEVICE(0x11AB, 0x6121), },
162 { PCI_DEVICE(0x11AB, 0x6123), },
75742cb4 163 { PCI_DEVICE(0x11AB, 0x6145), },
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164 { PCI_DEVICE(0x1B4B, 0x91A0), },
165 { PCI_DEVICE(0x1B4B, 0x91A4), },
166
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167 { } /* terminate list */
168};
169
170static struct pci_driver marvell_pci_driver = {
171 .name = DRV_NAME,
172 .id_table = marvell_pci_tbl,
173 .probe = marvell_init_one,
174 .remove = ata_pci_remove_one,
438ac6d5 175#ifdef CONFIG_PM
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176 .suspend = ata_pci_device_suspend,
177 .resume = ata_pci_device_resume,
438ac6d5 178#endif
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179};
180
2fc75da0 181module_pci_driver(marvell_pci_driver);
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182
183MODULE_AUTHOR("Alan Cox");
184MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");
185MODULE_LICENSE("GPL");
186MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);
187MODULE_VERSION(DRV_VERSION);