2 * pata_piccolo.c - Toshiba Piccolo PATA/SATA controller driver.
4 * This is basically an update to ata_generic.c to add Toshiba Piccolo support
5 * then split out to keep ata_generic "clean".
7 * Copyright 2005 Red Hat Inc, all rights reserved.
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>
13 * May be copied or modified under the terms of the GNU General Public License
15 * The timing data tables/programming info are courtesy of the NetBSD driver
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>
27 #define DRV_NAME "pata_piccolo"
28 #define DRV_VERSION "0.0.1"
32 static void tosh_set_piomode(struct ata_port *ap, struct ata_device *adev)
34 static const u16 pio[6] = { /* For reg 0x50 low word & E088 */
35 0x0566, 0x0433, 0x0311, 0x0201, 0x0200, 0x0100
37 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
39 pci_read_config_word(pdev, 0x50, &conf);
41 conf |= pio[adev->pio_mode - XFER_PIO_0];
42 pci_write_config_word(pdev, 0x50, conf);
45 static void tosh_set_dmamode(struct ata_port *ap, struct ata_device *adev)
47 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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;
54 conf |= (udma + 2) << 28;
55 conf |= (2 - udma) * 0x111; /* spread into three nibbles */
57 static const u32 mwdma[4] = {
58 0x0655, 0x0200, 0x0200, 0x0100
60 conf |= mwdma[adev->dma_mode - XFER_MW_DMA_0];
62 pci_write_config_dword(pdev, 0x5C, conf);
66 static struct scsi_host_template tosh_sht = {
67 ATA_BMDMA_SHT(DRV_NAME),
70 static 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
78 * ata_tosh_init - attach generic IDE
79 * @dev: PCI device found
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.
87 static int ata_tosh_init_one(struct pci_dev *dev, const struct pci_device_id *id)
89 static const struct ata_port_info info = {
90 .flags = ATA_FLAG_SLAVE_POSS,
92 .mwdma_mask = ATA_MWDMA2,
93 .udma_mask = ATA_UDMA2,
94 .port_ops = &tosh_port_ops
96 const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
97 /* Just one port for the moment */
98 return ata_pci_sff_init_one(dev, ppi, &tosh_sht, NULL, 0);
101 static 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), },
109 static struct pci_driver ata_tosh_pci_driver = {
111 .id_table = ata_tosh,
112 .probe = ata_tosh_init_one,
113 .remove = ata_pci_remove_one,
115 .suspend = ata_pci_device_suspend,
116 .resume = ata_pci_device_resume,
120 static int __init ata_tosh_init(void)
122 return pci_register_driver(&ata_tosh_pci_driver);
126 static void __exit ata_tosh_exit(void)
128 pci_unregister_driver(&ata_tosh_pci_driver);
132 MODULE_AUTHOR("Alan Cox");
133 MODULE_DESCRIPTION("Low level driver for Toshiba Piccolo ATA");
134 MODULE_LICENSE("GPL");
135 MODULE_DEVICE_TABLE(pci, ata_tosh);
136 MODULE_VERSION(DRV_VERSION);
138 module_init(ata_tosh_init);
139 module_exit(ata_tosh_exit);