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14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/pci.h>
17#include <linux/init.h>
18#include <linux/blkdev.h>
19#include <linux/delay.h>
20#include <scsi/scsi_host.h>
21#include <linux/libata.h>
22
23#define DRV_NAME "pata_rz1000"
24#define DRV_VERSION "0.2.4"
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37static int rz1000_set_mode(struct ata_link *link, struct ata_device **unused)
38{
39 struct ata_device *dev;
40
41 ata_for_each_dev(dev, link, ENABLED) {
42
43 dev->pio_mode = XFER_PIO_0;
44 dev->xfer_mode = XFER_PIO_0;
45 dev->xfer_shift = ATA_SHIFT_PIO;
46 dev->flags |= ATA_DFLAG_PIO;
47 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
48 }
49 return 0;
50}
51
52
53static struct scsi_host_template rz1000_sht = {
54 ATA_PIO_SHT(DRV_NAME),
55};
56
57static struct ata_port_operations rz1000_port_ops = {
58 .inherits = &ata_sff_port_ops,
59 .cable_detect = ata_cable_40wire,
60 .set_mode = rz1000_set_mode,
61};
62
63static int rz1000_fifo_disable(struct pci_dev *pdev)
64{
65 u16 reg;
66
67 if (pci_read_config_word(pdev, 0x40, ®) != 0)
68 return -1;
69 reg &= 0xDFFF;
70 if (pci_write_config_word(pdev, 0x40, reg) != 0)
71 return -1;
72 printk(KERN_INFO DRV_NAME ": disabled chipset readahead.\n");
73 return 0;
74}
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85
86static int rz1000_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
87{
88 static const struct ata_port_info info = {
89 .flags = ATA_FLAG_SLAVE_POSS,
90 .pio_mask = ATA_PIO4,
91 .port_ops = &rz1000_port_ops
92 };
93 const struct ata_port_info *ppi[] = { &info, NULL };
94
95 printk_once(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
96
97 if (rz1000_fifo_disable(pdev) == 0)
98 return ata_pci_sff_init_one(pdev, ppi, &rz1000_sht, NULL);
99
100 printk(KERN_ERR DRV_NAME ": failed to disable read-ahead on chipset..\n");
101
102 return -ENODEV;
103}
104
105#ifdef CONFIG_PM
106static int rz1000_reinit_one(struct pci_dev *pdev)
107{
108
109
110 if (rz1000_fifo_disable(pdev))
111 panic("rz1000 fifo");
112 return ata_pci_device_resume(pdev);
113}
114#endif
115
116static const struct pci_device_id pata_rz1000[] = {
117 { PCI_VDEVICE(PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000), },
118 { PCI_VDEVICE(PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001), },
119
120 { },
121};
122
123static struct pci_driver rz1000_pci_driver = {
124 .name = DRV_NAME,
125 .id_table = pata_rz1000,
126 .probe = rz1000_init_one,
127 .remove = ata_pci_remove_one,
128#ifdef CONFIG_PM
129 .suspend = ata_pci_device_suspend,
130 .resume = rz1000_reinit_one,
131#endif
132};
133
134static int __init rz1000_init(void)
135{
136 return pci_register_driver(&rz1000_pci_driver);
137}
138
139static void __exit rz1000_exit(void)
140{
141 pci_unregister_driver(&rz1000_pci_driver);
142}
143
144MODULE_AUTHOR("Alan Cox");
145MODULE_DESCRIPTION("low-level driver for RZ1000 PCI ATA");
146MODULE_LICENSE("GPL");
147MODULE_DEVICE_TABLE(pci, pata_rz1000);
148MODULE_VERSION(DRV_VERSION);
149
150module_init(rz1000_init);
151module_exit(rz1000_exit);
152
153