/* * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> * Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com> * * This is a look-alike variation of the ICH0 PIIX4 Ultra-66, * but this keeps the ISA-Bridge and slots alive. * */ #include <linux/types.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/pci.h> #include <linux/ide.h> #include <linux/init.h> #define DRV_NAME "slc90e66" static DEFINE_SPINLOCK(slc90e66_lock); static void slc90e66_set_pio_mode(ide_drive_t *drive, const u8 pio) { ide_hwif_t *hwif = drive->hwif; struct pci_dev *dev = to_pci_dev(hwif->dev); int is_slave = drive->dn & 1; int master_port = hwif->channel ? 0x42 : 0x40; int slave_port = 0x44; unsigned long flags; u16 master_data; u8 slave_data; int control = 0; /* ISP RTC */ static const u8 timings[][2] = { { 0, 0 }, { 0, 0 }, { 1, 0 }, { 2, 1 }, { 2, 3 }, }; spin_lock_irqsave(&slc90e66_lock, flags); pci_read_config_word(dev, master_port, &master_data); if (pio > 1) control |= 1; /* Programmable timing on */ if (drive->media == ide_disk) control |= 4; /* Prefetch, post write */ if (ide_pio_need_iordy(drive, pio)) control |= 2; /* IORDY */ if (is_slave) { master_data |= 0x4000; master_data &= ~0x0070; if (pio > 1) { /* Set PPE, IE and TIME */ master_data |= control << 4; } pci_read_config_byte(dev, slave_port, &slave_data); slave_data &= hwif->channel ? 0x0f : 0xf0; slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (hwif->channel ? 4 : 0); } else { master_data &= ~0x3307; if (pio > 1) { /* enable PPE, IE and TIME */ master_data |= control; } master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8); } pci_write_config_word(dev, master_port, master_data); if (is_slave) pci_write_config_byte(dev, slave_port, slave_data); spin_unlock_irqrestore(&slc90e66_lock, flags); } static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed) { ide_hwif_t *hwif = drive->hwif; struct pci_dev *dev = to_pci_dev(hwif->dev); u8 maslave = hwif->channel ? 0x42 : 0x40; int sitre = 0, a_speed = 7 << (drive->dn * 4); int u_speed = 0, u_flag = 1 << drive->dn; u16 reg4042, reg44, reg48, reg4a; pci_read_config_word(dev, maslave, ®4042); sitre = (reg4042 & 0x4000) ? 1 : 0; pci_read_config_word(dev, 0x44, ®44); pci_read_config_word(dev, 0x48, ®48); pci_read_config_word(dev, 0x4a, ®4a); if (speed >= XFER_UDMA_0) { u_speed = (speed - XFER_UDMA_0) << (drive->dn * 4); if (!(reg48 & u_flag)) pci_write_config_word(dev, 0x48, reg48|u_flag); /* FIXME: (reg4a & a_speed) ? */ if ((reg4a & u_speed) != u_speed) { pci_write_config_word(dev, 0x4a, reg4a & ~a_speed); pci_read_config_word(dev, 0x4a, ®4a); pci_write_config_word(dev, 0x4a, reg4a|u_speed); } } else { const u8 mwdma_to_pio[] = { 0, 3, 4 }; u8 pio; if (reg48 & u_flag) pci_write_config_word(dev, 0x48, reg48 & ~u_flag); if (reg4a & a_speed) pci_write_config_word(dev, 0x4a, reg4a & ~a_speed); if (speed >= XFER_MW_DMA_0) pio = mwdma_to_pio[speed - XFER_MW_DMA_0]; else pio = 2; /* only SWDMA2 is allowed */ slc90e66_set_pio_mode(drive, pio); } } static u8 slc90e66_cable_detect(ide_hwif_t *hwif) { struct pci_dev *dev = to_pci_dev(hwif->dev); u8 reg47 = 0, mask = hwif->channel ? 0x01 : 0x02; pci_read_config_byte(dev, 0x47, ®47); /* bit[0(1)]: 0:80, 1:40 */ return (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; } static const struct ide_port_ops slc90e66_port_ops = { .set_pio_mode = slc90e66_set_pio_mode, .set_dma_mode = slc90e66_set_dma_mode, .cable_detect = slc90e66_cable_detect, }; static const struct ide_port_info slc90e66_chipset __devinitdata = { .name = DRV_NAME, .enablebits = { {0x41, 0x80, 0x80}, {0x43, 0x80, 0x80} }, .port_ops = &slc90e66_port_ops, .pio_mask = ATA_PIO4, .swdma_mask = ATA_SWDMA2_ONLY, .mwdma_mask = ATA_MWDMA12_ONLY, .udma_mask = ATA_UDMA4, }; static int __devinit slc90e66_init_one(struct pci_dev *dev, const struct pci_device_id *id) { return ide_pci_init_one(dev, &slc90e66_chipset, NULL); } static const struct pci_device_id slc90e66_pci_tbl[] = { { PCI_VDEVICE(EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1), 0 }, { 0, }, }; MODULE_DEVICE_TABLE(pci, slc90e66_pci_tbl); static struct pci_driver slc90e66_pci_driver = { .name = "SLC90e66_IDE", .id_table = slc90e66_pci_tbl, .probe = slc90e66_init_one, .remove = ide_pci_remove, .suspend = ide_pci_suspend, .resume = ide_pci_resume, }; static int __init slc90e66_ide_init(void) { return ide_pci_register_driver(&slc90e66_pci_driver); } static void __exit slc90e66_ide_exit(void) { pci_unregister_driver(&slc90e66_pci_driver); } module_init(slc90e66_ide_init); module_exit(slc90e66_ide_exit); MODULE_AUTHOR("Andre Hedrick"); MODULE_DESCRIPTION("PCI driver module for SLC90E66 IDE"); MODULE_LICENSE("GPL");