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+/*
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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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+
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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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+
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+#define DRV_NAME "pata_piccolo"
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+#define DRV_VERSION "0.0.1"
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+
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+
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+
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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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+
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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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+
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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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+
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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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+/**
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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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+
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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);
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+}
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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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+
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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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+
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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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+
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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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+
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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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+
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+module_init(ata_tosh_init);
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+module_exit(ata_tosh_exit);
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+
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