16ea0fc98d
This allows parallel scan and the like to be set without having to stop using the existing full helper functions. This patch merely adds the argument and fixes up the callers. It doesn't undo the special cases already in the tree or add any new parallel callers. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/*
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* pata_piccolo.c - Toshiba Piccolo PATA/SATA controller driver.
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*
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* This is basically an update to ata_generic.c to add Toshiba Piccolo support
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* then split out to keep ata_generic "clean".
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*
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* Copyright 2005 Red Hat Inc, all rights reserved.
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*
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* Elements from ide/pci/generic.c
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* Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
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* Portions (C) Copyright 2002 Red Hat Inc <alan@redhat.com>
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*
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* May be copied or modified under the terms of the GNU General Public License
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*
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* The timing data tables/programming info are courtesy of the NetBSD driver
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include <scsi/scsi_host.h>
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#include <linux/libata.h>
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#define DRV_NAME "pata_piccolo"
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#define DRV_VERSION "0.0.1"
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static void tosh_set_piomode(struct ata_port *ap, struct ata_device *adev)
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{
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static const u16 pio[6] = { /* For reg 0x50 low word & E088 */
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0x0566, 0x0433, 0x0311, 0x0201, 0x0200, 0x0100
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};
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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u16 conf;
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pci_read_config_word(pdev, 0x50, &conf);
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conf &= 0xE088;
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conf |= pio[adev->pio_mode - XFER_PIO_0];
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pci_write_config_word(pdev, 0x50, conf);
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}
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static void tosh_set_dmamode(struct ata_port *ap, struct ata_device *adev)
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{
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struct pci_dev *pdev = to_pci_dev(ap->host->dev);
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u32 conf;
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pci_read_config_dword(pdev, 0x5C, &conf);
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conf &= 0x78FFE088; /* Keep the other bits */
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if (adev->dma_mode >= XFER_UDMA_0) {
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int udma = adev->dma_mode - XFER_UDMA_0;
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conf |= 0x80000000;
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conf |= (udma + 2) << 28;
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conf |= (2 - udma) * 0x111; /* spread into three nibbles */
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} else {
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static const u32 mwdma[4] = {
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0x0655, 0x0200, 0x0200, 0x0100
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};
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conf |= mwdma[adev->dma_mode - XFER_MW_DMA_0];
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}
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pci_write_config_dword(pdev, 0x5C, conf);
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}
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static struct scsi_host_template tosh_sht = {
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ATA_BMDMA_SHT(DRV_NAME),
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};
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static struct ata_port_operations tosh_port_ops = {
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.inherits = &ata_bmdma_port_ops,
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.cable_detect = ata_cable_unknown,
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.set_piomode = tosh_set_piomode,
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.set_dmamode = tosh_set_dmamode
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};
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/**
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* ata_tosh_init - attach generic IDE
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* @dev: PCI device found
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* @id: match entry
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*
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* Called each time a matching IDE interface is found. We check if the
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* interface is one we wish to claim and if so we perform any chip
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* specific hacks then let the ATA layer do the heavy lifting.
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*/
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static int ata_tosh_init_one(struct pci_dev *dev, const struct pci_device_id *id)
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{
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static const struct ata_port_info info = {
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.flags = ATA_FLAG_SLAVE_POSS,
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.pio_mask = ATA_PIO5,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA2,
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.port_ops = &tosh_port_ops
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};
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const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
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/* Just one port for the moment */
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return ata_pci_sff_init_one(dev, ppi, &tosh_sht, NULL, 0);
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}
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static struct pci_device_id ata_tosh[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), },
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{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), },
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{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_3), },
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{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_5), },
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{ 0, },
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};
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static struct pci_driver ata_tosh_pci_driver = {
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.name = DRV_NAME,
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.id_table = ata_tosh,
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.probe = ata_tosh_init_one,
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.remove = ata_pci_remove_one,
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#ifdef CONFIG_PM
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.suspend = ata_pci_device_suspend,
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.resume = ata_pci_device_resume,
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#endif
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};
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static int __init ata_tosh_init(void)
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{
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return pci_register_driver(&ata_tosh_pci_driver);
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}
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static void __exit ata_tosh_exit(void)
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{
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pci_unregister_driver(&ata_tosh_pci_driver);
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}
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MODULE_AUTHOR("Alan Cox");
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MODULE_DESCRIPTION("Low level driver for Toshiba Piccolo ATA");
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MODULE_LICENSE("GPL");
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MODULE_DEVICE_TABLE(pci, ata_tosh);
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MODULE_VERSION(DRV_VERSION);
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module_init(ata_tosh_init);
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module_exit(ata_tosh_exit);
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