/* * 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);