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path: root/drivers/ide/pci/it8172.c
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Diffstat (limited to 'drivers/ide/pci/it8172.c')
-rw-r--r--drivers/ide/pci/it8172.c307
1 files changed, 0 insertions, 307 deletions
diff --git a/drivers/ide/pci/it8172.c b/drivers/ide/pci/it8172.c
deleted file mode 100644
index 0fc89fafad65..000000000000
--- a/drivers/ide/pci/it8172.c
+++ /dev/null
@@ -1,307 +0,0 @@
-/*
- *
- * BRIEF MODULE DESCRIPTION
- * IT8172 IDE controller support
- *
- * Copyright 2000 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- * stevel@mvista.com or source@mvista.com
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/pci.h>
-#include <linux/hdreg.h>
-#include <linux/ide.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-#include <asm/it8172/it8172_int.h>
-
-/*
- * Prototypes
- */
-static u8 it8172_ratemask (ide_drive_t *drive)
-{
- return 1;
-}
-
-static void it8172_tune_drive (ide_drive_t *drive, u8 pio)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- int is_slave = (&hwif->drives[1] == drive);
- unsigned long flags;
- u16 drive_enables;
- u32 drive_timing;
-
- pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
- spin_lock_irqsave(&ide_lock, flags);
- pci_read_config_word(dev, 0x40, &drive_enables);
- pci_read_config_dword(dev, 0x44, &drive_timing);
-
- /*
- * FIX! The DIOR/DIOW pulse width and recovery times in port 0x44
- * are being left at the default values of 8 PCI clocks (242 nsec
- * for a 33 MHz clock). These can be safely shortened at higher
- * PIO modes. The DIOR/DIOW pulse width and recovery times only
- * apply to PIO modes, not to the DMA modes.
- */
-
- /*
- * Enable port 0x44. The IT8172G spec is confused; it calls
- * this register the "Slave IDE Timing Register", but in fact,
- * it controls timing for both master and slave drives.
- */
- drive_enables |= 0x4000;
-
- if (is_slave) {
- drive_enables &= 0xc006;
- if (pio > 1)
- /* enable prefetch and IORDY sample-point */
- drive_enables |= 0x0060;
- } else {
- drive_enables &= 0xc060;
- if (pio > 1)
- /* enable prefetch and IORDY sample-point */
- drive_enables |= 0x0006;
- }
-
- pci_write_config_word(dev, 0x40, drive_enables);
- spin_unlock_irqrestore(&ide_lock, flags);
-}
-
-static u8 it8172_dma_2_pio (u8 xfer_rate)
-{
- switch(xfer_rate) {
- case XFER_UDMA_5:
- case XFER_UDMA_4:
- case XFER_UDMA_3:
- case XFER_UDMA_2:
- case XFER_UDMA_1:
- case XFER_UDMA_0:
- case XFER_MW_DMA_2:
- case XFER_PIO_4:
- return 4;
- case XFER_MW_DMA_1:
- case XFER_PIO_3:
- return 3;
- case XFER_SW_DMA_2:
- case XFER_PIO_2:
- return 2;
- case XFER_MW_DMA_0:
- case XFER_SW_DMA_1:
- case XFER_SW_DMA_0:
- case XFER_PIO_1:
- case XFER_PIO_0:
- case XFER_PIO_SLOW:
- default:
- return 0;
- }
-}
-
-static int it8172_tune_chipset (ide_drive_t *drive, u8 xferspeed)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- u8 speed = ide_rate_filter(it8172_ratemask(drive), xferspeed);
- int a_speed = 3 << (drive->dn * 4);
- int u_flag = 1 << drive->dn;
- int u_speed = 0;
- u8 reg48, reg4a;
-
- pci_read_config_byte(dev, 0x48, &reg48);
- pci_read_config_byte(dev, 0x4a, &reg4a);
-
- /*
- * Setting the DMA cycle time to 2 or 3 PCI clocks (60 and 91 nsec
- * at 33 MHz PCI clock) seems to cause BadCRC errors during DMA
- * transfers on some drives, even though both numbers meet the minimum
- * ATAPI-4 spec of 73 and 54 nsec for UDMA 1 and 2 respectively.
- * So the faster times are just commented out here. The good news is
- * that the slower cycle time has very little affect on transfer
- * performance.
- */
-
- switch(speed) {
- case XFER_UDMA_4:
- case XFER_UDMA_2: //u_speed = 2 << (drive->dn * 4); break;
- case XFER_UDMA_5:
- case XFER_UDMA_3:
- case XFER_UDMA_1: //u_speed = 1 << (drive->dn * 4); break;
- case XFER_UDMA_0: u_speed = 0 << (drive->dn * 4); break;
- case XFER_MW_DMA_2:
- case XFER_MW_DMA_1:
- case XFER_MW_DMA_0:
- case XFER_SW_DMA_2: break;
- case XFER_PIO_4:
- case XFER_PIO_3:
- case XFER_PIO_2:
- case XFER_PIO_0: break;
- default: return -1;
- }
-
- if (speed >= XFER_UDMA_0) {
- pci_write_config_byte(dev, 0x48, reg48 | u_flag);
- reg4a &= ~a_speed;
- pci_write_config_byte(dev, 0x4a, reg4a | u_speed);
- } else {
- pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
- pci_write_config_byte(dev, 0x4a, reg4a & ~a_speed);
- }
-
- it8172_tune_drive(drive, it8172_dma_2_pio(speed));
- return (ide_config_drive_speed(drive, speed));
-}
-
-static int it8172_config_chipset_for_dma (ide_drive_t *drive)
-{
- u8 speed = ide_dma_speed(drive, it8172_ratemask(drive));
-
- if (!(speed)) {
- u8 tspeed = ide_get_best_pio_mode(drive, 255, 4, NULL);
- speed = it8172_dma_2_pio(XFER_PIO_0 + tspeed);
- }
-
- (void) it8172_tune_chipset(drive, speed);
- return ide_dma_enable(drive);
-}
-
-static int it8172_config_drive_xfer_rate (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct hd_driveid *id = drive->id;
-
- drive->init_speed = 0;
-
- if (id && (id->capability & 1) && drive->autodma) {
-
- if (ide_use_dma(drive)) {
- if (it8172_config_chipset_for_dma(drive))
- return hwif->ide_dma_on(drive);
- }
-
- goto fast_ata_pio;
-
- } else if ((id->capability & 8) || (id->field_valid & 2)) {
-fast_ata_pio:
- it8172_tune_drive(drive, 5);
- return hwif->ide_dma_off_quietly(drive);
- }
- /* IORDY not supported */
- return 0;
-}
-
-static unsigned int __devinit init_chipset_it8172 (struct pci_dev *dev, const char *name)
-{
- unsigned char progif;
-
- /*
- * Place both IDE interfaces into PCI "native" mode
- */
- pci_read_config_byte(dev, PCI_CLASS_PROG, &progif);
- pci_write_config_byte(dev, PCI_CLASS_PROG, progif | 0x05);
-
- return IT8172_IDE_IRQ;
-}
-
-
-static void __devinit init_hwif_it8172 (ide_hwif_t *hwif)
-{
- struct pci_dev* dev = hwif->pci_dev;
- unsigned long cmdBase, ctrlBase;
-
- hwif->autodma = 0;
- hwif->tuneproc = &it8172_tune_drive;
- hwif->speedproc = &it8172_tune_chipset;
-
- cmdBase = dev->resource[0].start;
- ctrlBase = dev->resource[1].start;
-
- ide_init_hwif_ports(&hwif->hw, cmdBase, ctrlBase | 2, NULL);
- memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->io_ports));
- hwif->noprobe = 0;
-
- if (!hwif->dma_base) {
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
- return;
- }
-
- hwif->atapi_dma = 1;
- hwif->ultra_mask = 0x07;
- hwif->mwdma_mask = 0x06;
- hwif->swdma_mask = 0x04;
-
- hwif->ide_dma_check = &it8172_config_drive_xfer_rate;
- if (!noautodma)
- hwif->autodma = 1;
- hwif->drives[0].autodma = hwif->autodma;
- hwif->drives[1].autodma = hwif->autodma;
-}
-
-static ide_pci_device_t it8172_chipsets[] __devinitdata = {
- { /* 0 */
- .name = "IT8172G",
- .init_chipset = init_chipset_it8172,
- .init_hwif = init_hwif_it8172,
- .channels = 2,
- .autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x40,0x00,0x01}},
- .bootable = ON_BOARD,
- }
-};
-
-static int __devinit it8172_init_one(struct pci_dev *dev, const struct pci_device_id *id)
-{
- if ((!(PCI_FUNC(dev->devfn) & 1) ||
- (!((dev->class >> 8) == PCI_CLASS_STORAGE_IDE))))
- return -ENODEV; /* IT8172 is more than an IDE controller */
- return ide_setup_pci_device(dev, &it8172_chipsets[id->driver_data]);
-}
-
-static struct pci_device_id it8172_pci_tbl[] = {
- { PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_IT8172G, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- { 0, },
-};
-MODULE_DEVICE_TABLE(pci, it8172_pci_tbl);
-
-static struct pci_driver driver = {
- .name = "IT8172_IDE",
- .id_table = it8172_pci_tbl,
- .probe = it8172_init_one,
-};
-
-static int it8172_ide_init(void)
-{
- return ide_pci_register_driver(&driver);
-}
-
-module_init(it8172_ide_init);
-
-MODULE_AUTHOR("SteveL@mvista.com");
-MODULE_DESCRIPTION("PCI driver module for ITE 8172 IDE");
-MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.