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361 lines
10 KiB
C
361 lines
10 KiB
C
/*
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* Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>
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* Copyright (C) 2006-2007, 2009 MontaVista Software, Inc.
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* Copyright (C) 2007 Bartlomiej Zolnierkiewicz
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*
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* Portions Copyright (C) 1999 Promise Technology, Inc.
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* Author: Frank Tiernan (frankt@promise.com)
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* Released under terms of General Public License
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*/
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#include <linux/types.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/blkdev.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/ide.h>
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#include <asm/io.h>
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#define DRV_NAME "pdc202xx_old"
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static void pdc_old_disable_66MHz_clock(ide_hwif_t *);
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static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
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{
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ide_hwif_t *hwif = drive->hwif;
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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u8 drive_pci = 0x60 + (drive->dn << 2);
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u8 AP = 0, BP = 0, CP = 0;
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u8 TA = 0, TB = 0, TC = 0;
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/*
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* TODO: do this once per channel
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*/
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if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
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pdc_old_disable_66MHz_clock(hwif);
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pci_read_config_byte(dev, drive_pci, &AP);
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pci_read_config_byte(dev, drive_pci + 1, &BP);
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pci_read_config_byte(dev, drive_pci + 2, &CP);
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switch(speed) {
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case XFER_UDMA_5:
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case XFER_UDMA_4: TB = 0x20; TC = 0x01; break;
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case XFER_UDMA_2: TB = 0x20; TC = 0x01; break;
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case XFER_UDMA_3:
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case XFER_UDMA_1: TB = 0x40; TC = 0x02; break;
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case XFER_UDMA_0:
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case XFER_MW_DMA_2: TB = 0x60; TC = 0x03; break;
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case XFER_MW_DMA_1: TB = 0x60; TC = 0x04; break;
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case XFER_MW_DMA_0: TB = 0xE0; TC = 0x0F; break;
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case XFER_PIO_4: TA = 0x01; TB = 0x04; break;
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case XFER_PIO_3: TA = 0x02; TB = 0x06; break;
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case XFER_PIO_2: TA = 0x03; TB = 0x08; break;
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case XFER_PIO_1: TA = 0x05; TB = 0x0C; break;
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case XFER_PIO_0:
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default: TA = 0x09; TB = 0x13; break;
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}
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if (speed < XFER_SW_DMA_0) {
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/*
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* preserve SYNC_INT / ERDDY_EN bits while clearing
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* Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
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*/
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AP &= ~0x3f;
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if (ide_pio_need_iordy(drive, speed - XFER_PIO_0))
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AP |= 0x20; /* set IORDY_EN bit */
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if (drive->media == ide_disk)
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AP |= 0x10; /* set Prefetch_EN bit */
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/* clear PB[4:0] bits of register B */
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BP &= ~0x1f;
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pci_write_config_byte(dev, drive_pci, AP | TA);
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pci_write_config_byte(dev, drive_pci + 1, BP | TB);
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} else {
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/* clear MB[2:0] bits of register B */
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BP &= ~0xe0;
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/* clear MC[3:0] bits of register C */
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CP &= ~0x0f;
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pci_write_config_byte(dev, drive_pci + 1, BP | TB);
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pci_write_config_byte(dev, drive_pci + 2, CP | TC);
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}
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}
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static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
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{
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pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
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}
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static int pdc202xx_test_irq(ide_hwif_t *hwif)
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{
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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unsigned long high_16 = pci_resource_start(dev, 4);
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u8 sc1d = inb(high_16 + 0x1d);
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if (hwif->channel) {
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/*
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* bit 7: error, bit 6: interrupting,
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* bit 5: FIFO full, bit 4: FIFO empty
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*/
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return ((sc1d & 0x50) == 0x40) ? 1 : 0;
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} else {
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/*
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* bit 3: error, bit 2: interrupting,
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* bit 1: FIFO full, bit 0: FIFO empty
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*/
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return ((sc1d & 0x05) == 0x04) ? 1 : 0;
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}
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}
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static u8 pdc2026x_cable_detect(ide_hwif_t *hwif)
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{
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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u16 CIS, mask = hwif->channel ? (1 << 11) : (1 << 10);
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pci_read_config_word(dev, 0x50, &CIS);
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return (CIS & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
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}
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/*
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* Set the control register to use the 66MHz system
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* clock for UDMA 3/4/5 mode operation when necessary.
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*
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* FIXME: this register is shared by both channels, some locking is needed
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*
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* It may also be possible to leave the 66MHz clock on
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* and readjust the timing parameters.
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*/
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static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
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{
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unsigned long clock_reg = hwif->extra_base + 0x01;
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u8 clock = inb(clock_reg);
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outb(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
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}
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static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
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{
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unsigned long clock_reg = hwif->extra_base + 0x01;
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u8 clock = inb(clock_reg);
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outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
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}
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static void pdc202xx_dma_start(ide_drive_t *drive)
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{
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if (drive->current_speed > XFER_UDMA_2)
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pdc_old_enable_66MHz_clock(drive->hwif);
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if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) {
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ide_hwif_t *hwif = drive->hwif;
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struct request *rq = hwif->rq;
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unsigned long high_16 = hwif->extra_base - 16;
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unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
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u32 word_count = 0;
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u8 clock = inb(high_16 + 0x11);
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outb(clock | (hwif->channel ? 0x08 : 0x02), high_16 + 0x11);
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word_count = (blk_rq_sectors(rq) << 8);
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word_count = (rq_data_dir(rq) == READ) ?
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word_count | 0x05000000 :
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word_count | 0x06000000;
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outl(word_count, atapi_reg);
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}
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ide_dma_start(drive);
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}
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static int pdc202xx_dma_end(ide_drive_t *drive)
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{
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if (drive->media != ide_disk || (drive->dev_flags & IDE_DFLAG_LBA48)) {
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ide_hwif_t *hwif = drive->hwif;
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unsigned long high_16 = hwif->extra_base - 16;
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unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
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u8 clock = 0;
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outl(0, atapi_reg); /* zero out extra */
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clock = inb(high_16 + 0x11);
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outb(clock & ~(hwif->channel ? 0x08:0x02), high_16 + 0x11);
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}
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if (drive->current_speed > XFER_UDMA_2)
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pdc_old_disable_66MHz_clock(drive->hwif);
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return ide_dma_end(drive);
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}
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static int init_chipset_pdc202xx(struct pci_dev *dev)
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{
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unsigned long dmabase = pci_resource_start(dev, 4);
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u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
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if (dmabase == 0)
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goto out;
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udma_speed_flag = inb(dmabase | 0x1f);
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primary_mode = inb(dmabase | 0x1a);
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secondary_mode = inb(dmabase | 0x1b);
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printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
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"Primary %s Mode " \
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"Secondary %s Mode.\n", pci_name(dev),
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(udma_speed_flag & 1) ? "EN" : "DIS",
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(primary_mode & 1) ? "MASTER" : "PCI",
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(secondary_mode & 1) ? "MASTER" : "PCI" );
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if (!(udma_speed_flag & 1)) {
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printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
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pci_name(dev), udma_speed_flag,
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(udma_speed_flag|1));
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outb(udma_speed_flag | 1, dmabase | 0x1f);
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printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN");
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}
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out:
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return 0;
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}
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static void __devinit pdc202ata4_fixup_irq(struct pci_dev *dev,
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const char *name)
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{
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if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
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u8 irq = 0, irq2 = 0;
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pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
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/* 0xbc */
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pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
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if (irq != irq2) {
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pci_write_config_byte(dev,
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(PCI_INTERRUPT_LINE)|0x80, irq); /* 0xbc */
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printk(KERN_INFO "%s %s: PCI config space interrupt "
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"mirror fixed\n", name, pci_name(dev));
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}
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}
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}
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#define IDE_HFLAGS_PDC202XX \
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(IDE_HFLAG_ERROR_STOPS_FIFO | \
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IDE_HFLAG_OFF_BOARD)
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static const struct ide_port_ops pdc20246_port_ops = {
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.set_pio_mode = pdc202xx_set_pio_mode,
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.set_dma_mode = pdc202xx_set_mode,
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.test_irq = pdc202xx_test_irq,
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};
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static const struct ide_port_ops pdc2026x_port_ops = {
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.set_pio_mode = pdc202xx_set_pio_mode,
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.set_dma_mode = pdc202xx_set_mode,
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.cable_detect = pdc2026x_cable_detect,
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};
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static const struct ide_dma_ops pdc2026x_dma_ops = {
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.dma_host_set = ide_dma_host_set,
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.dma_setup = ide_dma_setup,
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.dma_start = pdc202xx_dma_start,
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.dma_end = pdc202xx_dma_end,
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.dma_test_irq = ide_dma_test_irq,
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.dma_lost_irq = ide_dma_lost_irq,
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.dma_timer_expiry = ide_dma_sff_timer_expiry,
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.dma_sff_read_status = ide_dma_sff_read_status,
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};
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#define DECLARE_PDC2026X_DEV(udma, sectors) \
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{ \
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.name = DRV_NAME, \
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.init_chipset = init_chipset_pdc202xx, \
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.port_ops = &pdc2026x_port_ops, \
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.dma_ops = &pdc2026x_dma_ops, \
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.host_flags = IDE_HFLAGS_PDC202XX, \
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.pio_mask = ATA_PIO4, \
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.mwdma_mask = ATA_MWDMA2, \
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.udma_mask = udma, \
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.max_sectors = sectors, \
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}
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static const struct ide_port_info pdc202xx_chipsets[] __devinitdata = {
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{ /* 0: PDC20246 */
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.name = DRV_NAME,
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.init_chipset = init_chipset_pdc202xx,
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.port_ops = &pdc20246_port_ops,
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.dma_ops = &sff_dma_ops,
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.host_flags = IDE_HFLAGS_PDC202XX,
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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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},
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/* 1: PDC2026{2,3} */
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DECLARE_PDC2026X_DEV(ATA_UDMA4, 0),
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/* 2: PDC2026{5,7}: UDMA5, limit LBA48 requests to 256 sectors */
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DECLARE_PDC2026X_DEV(ATA_UDMA5, 256),
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};
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/**
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* pdc202xx_init_one - called when a PDC202xx is found
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* @dev: the pdc202xx 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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static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
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{
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const struct ide_port_info *d;
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u8 idx = id->driver_data;
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d = &pdc202xx_chipsets[idx];
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if (idx < 2)
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pdc202ata4_fixup_irq(dev, d->name);
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if (dev->vendor == PCI_DEVICE_ID_PROMISE_20265) {
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struct pci_dev *bridge = dev->bus->self;
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if (bridge &&
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bridge->vendor == PCI_VENDOR_ID_INTEL &&
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(bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
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bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
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printk(KERN_INFO DRV_NAME " %s: skipping Promise "
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"PDC20265 attached to I2O RAID controller\n",
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pci_name(dev));
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return -ENODEV;
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}
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}
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return ide_pci_init_one(dev, d, NULL);
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}
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static const struct pci_device_id pdc202xx_pci_tbl[] = {
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{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20246), 0 },
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{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20262), 1 },
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{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20263), 1 },
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{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20265), 2 },
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{ PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20267), 2 },
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{ 0, },
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};
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MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
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static struct pci_driver pdc202xx_pci_driver = {
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.name = "Promise_Old_IDE",
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.id_table = pdc202xx_pci_tbl,
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.probe = pdc202xx_init_one,
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.remove = ide_pci_remove,
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.suspend = ide_pci_suspend,
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.resume = ide_pci_resume,
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};
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static int __init pdc202xx_ide_init(void)
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{
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return ide_pci_register_driver(&pdc202xx_pci_driver);
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}
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static void __exit pdc202xx_ide_exit(void)
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{
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pci_unregister_driver(&pdc202xx_pci_driver);
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}
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module_init(pdc202xx_ide_init);
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module_exit(pdc202xx_ide_exit);
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MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
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MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
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MODULE_LICENSE("GPL");
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