blob: 9816154148490f708fd22bcd0c1b62f98b3fa39b [file] [log] [blame]
Alan Cox8e182a92009-11-30 13:23:11 +00001/*
2 * pata_piccolo.c - Toshiba Piccolo PATA/SATA controller driver.
3 *
4 * This is basically an update to ata_generic.c to add Toshiba Piccolo support
5 * then split out to keep ata_generic "clean".
6 *
7 * Copyright 2005 Red Hat Inc, all rights reserved.
8 *
9 * Elements from ide/pci/generic.c
10 * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
11 * Portions (C) Copyright 2002 Red Hat Inc <alan@redhat.com>
12 *
13 * May be copied or modified under the terms of the GNU General Public License
14 *
15 * The timing data tables/programming info are courtesy of the NetBSD driver
16 */
17
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/pci.h>
21#include <linux/init.h>
22#include <linux/blkdev.h>
23#include <linux/delay.h>
24#include <scsi/scsi_host.h>
25#include <linux/libata.h>
26
27#define DRV_NAME "pata_piccolo"
28#define DRV_VERSION "0.0.1"
29
30
31
32static void tosh_set_piomode(struct ata_port *ap, struct ata_device *adev)
33{
34 static const u16 pio[6] = { /* For reg 0x50 low word & E088 */
35 0x0566, 0x0433, 0x0311, 0x0201, 0x0200, 0x0100
36 };
37 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
38 u16 conf;
39 pci_read_config_word(pdev, 0x50, &conf);
40 conf &= 0xE088;
41 conf |= pio[adev->pio_mode - XFER_PIO_0];
42 pci_write_config_word(pdev, 0x50, conf);
43}
44
45static void tosh_set_dmamode(struct ata_port *ap, struct ata_device *adev)
46{
47 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
48 u32 conf;
49 pci_read_config_dword(pdev, 0x5C, &conf);
50 conf &= 0x78FFE088; /* Keep the other bits */
51 if (adev->dma_mode >= XFER_UDMA_0) {
52 int udma = adev->dma_mode - XFER_UDMA_0;
53 conf |= 0x80000000;
54 conf |= (udma + 2) << 28;
55 conf |= (2 - udma) * 0x111; /* spread into three nibbles */
56 } else {
57 static const u32 mwdma[4] = {
58 0x0655, 0x0200, 0x0200, 0x0100
59 };
60 conf |= mwdma[adev->dma_mode - XFER_MW_DMA_0];
61 }
62 pci_write_config_dword(pdev, 0x5C, conf);
63}
64
65
66static struct scsi_host_template tosh_sht = {
67 ATA_BMDMA_SHT(DRV_NAME),
68};
69
70static struct ata_port_operations tosh_port_ops = {
71 .inherits = &ata_bmdma_port_ops,
72 .cable_detect = ata_cable_unknown,
73 .set_piomode = tosh_set_piomode,
74 .set_dmamode = tosh_set_dmamode
75};
76
77/**
78 * ata_tosh_init - attach generic IDE
79 * @dev: PCI device found
80 * @id: match entry
81 *
82 * Called each time a matching IDE interface is found. We check if the
83 * interface is one we wish to claim and if so we perform any chip
84 * specific hacks then let the ATA layer do the heavy lifting.
85 */
86
87static int ata_tosh_init_one(struct pci_dev *dev, const struct pci_device_id *id)
88{
89 static const struct ata_port_info info = {
90 .flags = ATA_FLAG_SLAVE_POSS,
91 .pio_mask = ATA_PIO5,
92 .mwdma_mask = ATA_MWDMA2,
93 .udma_mask = ATA_UDMA2,
94 .port_ops = &tosh_port_ops
95 };
96 const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
97 /* Just one port for the moment */
Alan Cox16ea0fc2010-02-23 02:26:06 -050098 return ata_pci_sff_init_one(dev, ppi, &tosh_sht, NULL, 0);
Alan Cox8e182a92009-11-30 13:23:11 +000099}
100
101static struct pci_device_id ata_tosh[] = {
102 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), },
103 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), },
104 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_3), },
105 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_5), },
106 { 0, },
107};
108
109static struct pci_driver ata_tosh_pci_driver = {
110 .name = DRV_NAME,
111 .id_table = ata_tosh,
112 .probe = ata_tosh_init_one,
113 .remove = ata_pci_remove_one,
114#ifdef CONFIG_PM
115 .suspend = ata_pci_device_suspend,
116 .resume = ata_pci_device_resume,
117#endif
118};
119
120static int __init ata_tosh_init(void)
121{
122 return pci_register_driver(&ata_tosh_pci_driver);
123}
124
125
126static void __exit ata_tosh_exit(void)
127{
128 pci_unregister_driver(&ata_tosh_pci_driver);
129}
130
131
132MODULE_AUTHOR("Alan Cox");
133MODULE_DESCRIPTION("Low level driver for Toshiba Piccolo ATA");
134MODULE_LICENSE("GPL");
135MODULE_DEVICE_TABLE(pci, ata_tosh);
136MODULE_VERSION(DRV_VERSION);
137
138module_init(ata_tosh_init);
139module_exit(ata_tosh_exit);
140