304 lines
8.6 KiB
C
304 lines
8.6 KiB
C
/*
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* linux/drivers/ide/pci/aec62xx.c Version 0.27 Sep 16, 2007
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*
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* Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
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* Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
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*
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/hdreg.h>
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#include <linux/ide.h>
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#include <linux/init.h>
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#include <asm/io.h>
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struct chipset_bus_clock_list_entry {
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u8 xfer_speed;
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u8 chipset_settings;
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u8 ultra_settings;
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};
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static const struct chipset_bus_clock_list_entry aec6xxx_33_base [] = {
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{ XFER_UDMA_6, 0x31, 0x07 },
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{ XFER_UDMA_5, 0x31, 0x06 },
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{ XFER_UDMA_4, 0x31, 0x05 },
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{ XFER_UDMA_3, 0x31, 0x04 },
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{ XFER_UDMA_2, 0x31, 0x03 },
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{ XFER_UDMA_1, 0x31, 0x02 },
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{ XFER_UDMA_0, 0x31, 0x01 },
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{ XFER_MW_DMA_2, 0x31, 0x00 },
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{ XFER_MW_DMA_1, 0x31, 0x00 },
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{ XFER_MW_DMA_0, 0x0a, 0x00 },
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{ XFER_PIO_4, 0x31, 0x00 },
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{ XFER_PIO_3, 0x33, 0x00 },
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{ XFER_PIO_2, 0x08, 0x00 },
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{ XFER_PIO_1, 0x0a, 0x00 },
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{ XFER_PIO_0, 0x00, 0x00 },
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{ 0, 0x00, 0x00 }
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};
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static const struct chipset_bus_clock_list_entry aec6xxx_34_base [] = {
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{ XFER_UDMA_6, 0x41, 0x06 },
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{ XFER_UDMA_5, 0x41, 0x05 },
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{ XFER_UDMA_4, 0x41, 0x04 },
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{ XFER_UDMA_3, 0x41, 0x03 },
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{ XFER_UDMA_2, 0x41, 0x02 },
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{ XFER_UDMA_1, 0x41, 0x01 },
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{ XFER_UDMA_0, 0x41, 0x01 },
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{ XFER_MW_DMA_2, 0x41, 0x00 },
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{ XFER_MW_DMA_1, 0x42, 0x00 },
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{ XFER_MW_DMA_0, 0x7a, 0x00 },
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{ XFER_PIO_4, 0x41, 0x00 },
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{ XFER_PIO_3, 0x43, 0x00 },
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{ XFER_PIO_2, 0x78, 0x00 },
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{ XFER_PIO_1, 0x7a, 0x00 },
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{ XFER_PIO_0, 0x70, 0x00 },
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{ 0, 0x00, 0x00 }
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};
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#define BUSCLOCK(D) \
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((struct chipset_bus_clock_list_entry *) pci_get_drvdata((D)))
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/*
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* TO DO: active tuning and correction of cards without a bios.
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*/
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static u8 pci_bus_clock_list (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
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{
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for ( ; chipset_table->xfer_speed ; chipset_table++)
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if (chipset_table->xfer_speed == speed) {
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return chipset_table->chipset_settings;
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}
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return chipset_table->chipset_settings;
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}
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static u8 pci_bus_clock_list_ultra (u8 speed, struct chipset_bus_clock_list_entry * chipset_table)
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{
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for ( ; chipset_table->xfer_speed ; chipset_table++)
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if (chipset_table->xfer_speed == speed) {
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return chipset_table->ultra_settings;
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}
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return chipset_table->ultra_settings;
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}
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static void aec6210_set_mode(ide_drive_t *drive, const u8 speed)
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{
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ide_hwif_t *hwif = HWIF(drive);
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struct pci_dev *dev = hwif->pci_dev;
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u16 d_conf = 0;
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u8 ultra = 0, ultra_conf = 0;
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u8 tmp0 = 0, tmp1 = 0, tmp2 = 0;
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unsigned long flags;
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local_irq_save(flags);
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/* 0x40|(2*drive->dn): Active, 0x41|(2*drive->dn): Recovery */
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pci_read_config_word(dev, 0x40|(2*drive->dn), &d_conf);
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tmp0 = pci_bus_clock_list(speed, BUSCLOCK(dev));
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d_conf = ((tmp0 & 0xf0) << 4) | (tmp0 & 0xf);
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pci_write_config_word(dev, 0x40|(2*drive->dn), d_conf);
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tmp1 = 0x00;
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tmp2 = 0x00;
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pci_read_config_byte(dev, 0x54, &ultra);
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tmp1 = ((0x00 << (2*drive->dn)) | (ultra & ~(3 << (2*drive->dn))));
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ultra_conf = pci_bus_clock_list_ultra(speed, BUSCLOCK(dev));
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tmp2 = ((ultra_conf << (2*drive->dn)) | (tmp1 & ~(3 << (2*drive->dn))));
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pci_write_config_byte(dev, 0x54, tmp2);
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local_irq_restore(flags);
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}
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static void aec6260_set_mode(ide_drive_t *drive, const u8 speed)
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{
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ide_hwif_t *hwif = HWIF(drive);
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struct pci_dev *dev = hwif->pci_dev;
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u8 unit = (drive->select.b.unit & 0x01);
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u8 tmp1 = 0, tmp2 = 0;
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u8 ultra = 0, drive_conf = 0, ultra_conf = 0;
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unsigned long flags;
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local_irq_save(flags);
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/* high 4-bits: Active, low 4-bits: Recovery */
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pci_read_config_byte(dev, 0x40|drive->dn, &drive_conf);
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drive_conf = pci_bus_clock_list(speed, BUSCLOCK(dev));
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pci_write_config_byte(dev, 0x40|drive->dn, drive_conf);
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pci_read_config_byte(dev, (0x44|hwif->channel), &ultra);
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tmp1 = ((0x00 << (4*unit)) | (ultra & ~(7 << (4*unit))));
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ultra_conf = pci_bus_clock_list_ultra(speed, BUSCLOCK(dev));
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tmp2 = ((ultra_conf << (4*unit)) | (tmp1 & ~(7 << (4*unit))));
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pci_write_config_byte(dev, (0x44|hwif->channel), tmp2);
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local_irq_restore(flags);
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}
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static void aec_set_pio_mode(ide_drive_t *drive, const u8 pio)
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{
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drive->hwif->set_dma_mode(drive, pio + XFER_PIO_0);
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}
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static unsigned int __devinit init_chipset_aec62xx(struct pci_dev *dev, const char *name)
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{
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int bus_speed = system_bus_clock();
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if (bus_speed <= 33)
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pci_set_drvdata(dev, (void *) aec6xxx_33_base);
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else
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pci_set_drvdata(dev, (void *) aec6xxx_34_base);
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/* These are necessary to get AEC6280 Macintosh cards to work */
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if ((dev->device == PCI_DEVICE_ID_ARTOP_ATP865) ||
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(dev->device == PCI_DEVICE_ID_ARTOP_ATP865R)) {
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u8 reg49h = 0, reg4ah = 0;
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/* Clear reset and test bits. */
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pci_read_config_byte(dev, 0x49, ®49h);
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pci_write_config_byte(dev, 0x49, reg49h & ~0x30);
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/* Enable chip interrupt output. */
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pci_read_config_byte(dev, 0x4a, ®4ah);
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pci_write_config_byte(dev, 0x4a, reg4ah & ~0x01);
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/* Enable burst mode. */
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pci_read_config_byte(dev, 0x4a, ®4ah);
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pci_write_config_byte(dev, 0x4a, reg4ah | 0x80);
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}
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return dev->irq;
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}
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static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
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{
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struct pci_dev *dev = hwif->pci_dev;
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hwif->set_pio_mode = &aec_set_pio_mode;
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if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
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hwif->set_dma_mode = &aec6210_set_mode;
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else
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hwif->set_dma_mode = &aec6260_set_mode;
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if (hwif->dma_base == 0)
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return;
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if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
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return;
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if (hwif->cbl != ATA_CBL_PATA40_SHORT) {
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u8 ata66 = 0, mask = hwif->channel ? 0x02 : 0x01;
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pci_read_config_byte(hwif->pci_dev, 0x49, &ata66);
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hwif->cbl = (ata66 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
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}
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}
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static const struct ide_port_info aec62xx_chipsets[] __devinitdata = {
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{ /* 0 */
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.name = "AEC6210",
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.init_chipset = init_chipset_aec62xx,
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.init_hwif = init_hwif_aec62xx,
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.enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
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.host_flags = IDE_HFLAG_SERIALIZE |
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IDE_HFLAG_NO_ATAPI_DMA |
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IDE_HFLAG_OFF_BOARD,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA2,
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},{ /* 1 */
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.name = "AEC6260",
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.init_chipset = init_chipset_aec62xx,
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.init_hwif = init_hwif_aec62xx,
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.host_flags = IDE_HFLAG_NO_ATAPI_DMA | IDE_HFLAG_NO_AUTODMA |
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IDE_HFLAG_OFF_BOARD,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA4,
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},{ /* 2 */
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.name = "AEC6260R",
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.init_chipset = init_chipset_aec62xx,
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.init_hwif = init_hwif_aec62xx,
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.enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
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.host_flags = IDE_HFLAG_NO_ATAPI_DMA,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA4,
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},{ /* 3 */
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.name = "AEC6280",
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.init_chipset = init_chipset_aec62xx,
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.init_hwif = init_hwif_aec62xx,
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.host_flags = IDE_HFLAG_NO_ATAPI_DMA | IDE_HFLAG_OFF_BOARD,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA5,
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},{ /* 4 */
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.name = "AEC6280R",
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.init_chipset = init_chipset_aec62xx,
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.init_hwif = init_hwif_aec62xx,
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.enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
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.host_flags = IDE_HFLAG_NO_ATAPI_DMA | IDE_HFLAG_OFF_BOARD,
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.pio_mask = ATA_PIO4,
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.mwdma_mask = ATA_MWDMA2,
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.udma_mask = ATA_UDMA5,
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}
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};
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/**
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* aec62xx_init_one - called when a AEC is found
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* @dev: the aec62xx device
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* @id: the matching pci id
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*
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* Called when the PCI registration layer (or the IDE initialization)
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* finds a device matching our IDE device tables.
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*
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* NOTE: since we're going to modify the 'name' field for AEC-6[26]80[R]
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* chips, pass a local copy of 'struct ide_port_info' down the call chain.
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*/
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static int __devinit aec62xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
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{
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struct ide_port_info d;
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u8 idx = id->driver_data;
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d = aec62xx_chipsets[idx];
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if (idx == 3 || idx == 4) {
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unsigned long dma_base = pci_resource_start(dev, 4);
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if (inb(dma_base + 2) & 0x10) {
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d.name = (idx == 4) ? "AEC6880R" : "AEC6880";
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d.udma_mask = ATA_UDMA6;
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}
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}
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return ide_setup_pci_device(dev, &d);
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}
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static const struct pci_device_id aec62xx_pci_tbl[] = {
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{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP850UF), 0 },
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{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860), 1 },
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{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP860R), 2 },
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{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865), 3 },
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{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP865R), 4 },
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{ 0, },
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};
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MODULE_DEVICE_TABLE(pci, aec62xx_pci_tbl);
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static struct pci_driver driver = {
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.name = "AEC62xx_IDE",
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.id_table = aec62xx_pci_tbl,
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.probe = aec62xx_init_one,
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};
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static int __init aec62xx_ide_init(void)
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{
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return ide_pci_register_driver(&driver);
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}
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module_init(aec62xx_ide_init);
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MODULE_AUTHOR("Andre Hedrick");
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MODULE_DESCRIPTION("PCI driver module for ARTOP AEC62xx IDE");
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MODULE_LICENSE("GPL");
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