text: /*
   *  pata_piccolo.c - Toshiba Piccolo PATA/SATA controller driver.
   *
   *  This is basically an update to ata_generic.c to add Toshiba Piccolo support
   *  then split out to keep ata_generic "clean".
   *
   *  Copyright 2005 Red Hat Inc, all rights reserved.
   *
   *  Elements from ide/pci/generic.c
   *	    Copyright (C) 2001-2002	Andre Hedrick <andre@linux-ide.org>
   *	    Portions (C) Copyright 2002  Red Hat Inc <alan@redhat.com>
   *
   *  May be copied or modified under the terms of the GNU General Public License
   *
   *  The timing data tables/programming info are courtesy of the NetBSD driver
   */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/pci.h>
  #include <linux/blkdev.h>
  #include <linux/delay.h>
  #include <scsi/scsi_host.h>
  #include <linux/libata.h>
  
  #define DRV_NAME "pata_piccolo"
  #define DRV_VERSION "0.0.1"
  
  
  
  static void tosh_set_piomode(struct ata_port *ap, struct ata_device *adev)
  {
  	static const u16 pio[6] = {	/* For reg 0x50 low word & E088 */
  		0x0566, 0x0433, 0x0311, 0x0201, 0x0200, 0x0100
  	};
  	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
  	u16 conf;
  	pci_read_config_word(pdev, 0x50, &conf);
  	conf &= 0xE088;
  	conf |= pio[adev->pio_mode - XFER_PIO_0];
  	pci_write_config_word(pdev, 0x50, conf);
  }
  
  static void tosh_set_dmamode(struct ata_port *ap, struct ata_device *adev)
  {
  	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
  	u32 conf;
  	pci_read_config_dword(pdev, 0x5C, &conf);
  	conf &= 0x78FFE088;	/* Keep the other bits */
  	if (adev->dma_mode >= XFER_UDMA_0) {
  		int udma = adev->dma_mode - XFER_UDMA_0;
  		conf |= 0x80000000;
  		conf |= (udma + 2) << 28;
  		conf |= (2 - udma) * 0x111;	/* spread into three nibbles */
  	} else {
  		static const u32 mwdma[4] = {
  			0x0655, 0x0200, 0x0200, 0x0100
  		};
  		conf |= mwdma[adev->dma_mode - XFER_MW_DMA_0];
  	}
  	pci_write_config_dword(pdev, 0x5C, conf);
  }
  
  
  static struct scsi_host_template tosh_sht = {
  	ATA_BMDMA_SHT(DRV_NAME),
  };
  
  static struct ata_port_operations tosh_port_ops = {
  	.inherits	= &ata_bmdma_port_ops,
  	.cable_detect	= ata_cable_unknown,
  	.set_piomode	= tosh_set_piomode,
  	.set_dmamode	= tosh_set_dmamode
  };
  
  /**
   *	ata_tosh_init		-	attach generic IDE
   *	@dev: PCI device found
   *	@id: match entry
   *
   *	Called each time a matching IDE interface is found. We check if the
   *	interface is one we wish to claim and if so we perform any chip
   *	specific hacks then let the ATA layer do the heavy lifting.
   */
  
  static int ata_tosh_init_one(struct pci_dev *dev, const struct pci_device_id *id)
  {
  	static const struct ata_port_info info = {
  		.flags = ATA_FLAG_SLAVE_POSS,
  		.pio_mask = ATA_PIO5,
  		.mwdma_mask = ATA_MWDMA2,
  		.udma_mask = ATA_UDMA2,
  		.port_ops = &tosh_port_ops
  	};
  	const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
  	/* Just one port for the moment */
  	return ata_pci_bmdma_init_one(dev, ppi, &tosh_sht, NULL, 0);
  }
  
  static struct pci_device_id ata_tosh[] = {
  	{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), },
  	{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),  },
  	{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_3),  },
  	{ PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_5),  },
  	{ 0, },
  };
  
  static struct pci_driver ata_tosh_pci_driver = {
  	.name 		= DRV_NAME,
  	.id_table	= ata_tosh,
  	.probe 		= ata_tosh_init_one,
  	.remove		= ata_pci_remove_one,
  #ifdef CONFIG_PM_SLEEP
  	.suspend	= ata_pci_device_suspend,
  	.resume		= ata_pci_device_resume,
  #endif
  };
  
  module_pci_driver(ata_tosh_pci_driver);
  
  MODULE_AUTHOR("Alan Cox");
  MODULE_DESCRIPTION("Low level driver for Toshiba Piccolo ATA");
  MODULE_LICENSE("GPL");
  MODULE_DEVICE_TABLE(pci, ata_tosh);
  MODULE_VERSION(DRV_VERSION);
  