ide: it8213 IDE driver update (version 2)
* set ATAPI/IORDY/TIME bits correctly in it8213_tuneproc() * fix UDMA/MWDMA/SWDMA masks in it8213_init_hwif() * in it8213_tune_chipset() SWDMA2 mode should be used instead of MWDMA0 * backport various fixes from piix/slc90e66 drivers: - in it8213_tuneproc() the highest possible PIO mode is PIO4 (not PIO5) - clear ATAPI/IORDY/TIME bits before setting them also for slave device - use ->speedproc in it8213_config_drive_for_dma() - don't try to tune PIO in config_chipset_for_pio() - simplify is_slave calculation in it8213_tuneproc() - misc cleanups * fix it8213_ratemask() and it8213_tuneproc() comments * simplify it8213_init_hwif() * remove init_chipset_it8213() * add missing Copyrights and update MODULE_AUTHOR() * CodingStyle cleanups * remove dead code v2: * PCI_DEVICE_ID_ITE_8213 is only defined in -mm kernels, so just use PCI Device ID (0x8213) directly * fix ->ultra_mask incorrectly changed to 0x3f in v1 version of the patch Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
parent
9c6712c0bc
commit
6788182602
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@ -1,3 +1,11 @@
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/*
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* ITE 8213 IDE driver
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*
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* Copyright (C) 2006 Jack Lee
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* Copyright (C) 2006 Alan Cox
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* Copyright (C) 2007 Bartlomiej Zolnierkiewicz
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/module.h>
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@ -14,14 +22,14 @@
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* @drive: IDE drive
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*
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* Compute the available speeds for the devices on the interface. This
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* is all modes to ATA100 clipped by drive cable setup.
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* is all modes to ATA133 clipped by drive cable setup.
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*/
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static u8 it8213_ratemask (ide_drive_t *drive)
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{
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u8 mode = 4;
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if (!eighty_ninty_three(drive))
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mode = min(mode, (u8)1);
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mode = min_t(u8, mode, 1);
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return mode;
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}
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@ -62,55 +70,57 @@ static u8 it8213_dma_2_pio (u8 xfer_rate) {
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}
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}
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static spinlock_t tune_lock = SPIN_LOCK_UNLOCKED;
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/*
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* it8213_tuneproc - tune a drive
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* @drive: drive to tune
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* @mode_wanted: the target operating mode
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* @pio: desired PIO mode
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*
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* Load the timing settings for this device mode into the
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* controller. By the time we are called the mode has been
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* modified as neccessary to handle the absence of seperate
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* master/slave timers for MWDMA/PIO.
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*
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* This code is only used in pass through mode.
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* Set the interface PIO mode.
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*/
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static void it8213_tuneproc (ide_drive_t *drive, u8 pio)
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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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int is_slave = (&hwif->drives[1] == drive);
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int is_slave = drive->dn & 1;
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int master_port = 0x40;
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int slave_port = 0x44;
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unsigned long flags;
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u16 master_data;
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u8 slave_data;
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static DEFINE_SPINLOCK(tune_lock);
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int control = 0;
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u8 timings[][2] = { { 0, 0 },
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static const u8 timings[][2]= {
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{ 0, 0 },
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{ 0, 0 },
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{ 1, 0 },
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{ 2, 1 },
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{ 2, 3 }, };
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pio = ide_get_best_pio_mode(drive, pio, 5, NULL);
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pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
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spin_lock_irqsave(&tune_lock, flags);
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pci_read_config_word(dev, master_port, &master_data);
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if (is_slave) {
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master_data = master_data | 0x4000;
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if (pio > 1)
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master_data = master_data | 0x0070;
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if (pio > 1)
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control |= 1; /* Programmable timing on */
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if (drive->media != ide_disk)
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control |= 4; /* ATAPI */
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if (pio > 2)
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control |= 2; /* IORDY */
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if (is_slave) {
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master_data |= 0x4000;
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master_data &= ~0x0070;
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if (pio > 1)
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master_data = master_data | (control << 4);
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pci_read_config_byte(dev, slave_port, &slave_data);
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slave_data = slave_data & 0xf0;
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slave_data = slave_data | (((timings[pio][0] << 2) | (timings[pio][1]) << 0));
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slave_data = slave_data | (timings[pio][0] << 2) | timings[pio][1];
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} else {
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master_data = master_data & 0xccf8;
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master_data &= ~0x3307;
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if (pio > 1)
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master_data = master_data | 0x0007;
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master_data = master_data | control;
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master_data = master_data | (timings[pio][0] << 12) | (timings[pio][1] << 8);
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}
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pci_write_config_word(dev, master_port, master_data);
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@ -119,7 +129,6 @@ static void it8213_tuneproc (ide_drive_t *drive, u8 pio)
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spin_unlock_irqrestore(&tune_lock, flags);
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}
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/**
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* it8213_tune_chipset - set controller timings
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* @drive: Drive to set up
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@ -130,7 +139,7 @@ static void it8213_tuneproc (ide_drive_t *drive, u8 pio)
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* make the thing work.
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*/
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static int it8213_tune_chipset (ide_drive_t *drive, byte xferspeed)
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static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
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{
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ide_hwif_t *hwif = HWIF(drive);
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@ -154,15 +163,15 @@ static int it8213_tune_chipset (ide_drive_t *drive, byte xferspeed)
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switch(speed) {
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case XFER_UDMA_6:
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case XFER_UDMA_4:
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case XFER_UDMA_2:u_speed = 2 << (drive->dn * 4); break;
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case XFER_UDMA_2: u_speed = 2 << (drive->dn * 4); break;
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case XFER_UDMA_5:
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case XFER_UDMA_3:
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case XFER_UDMA_1:u_speed = 1 << (drive->dn * 4); break;
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case XFER_UDMA_0:u_speed = 0 << (drive->dn * 4); break;
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case XFER_UDMA_1: u_speed = 1 << (drive->dn * 4); break;
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case XFER_UDMA_0: u_speed = 0 << (drive->dn * 4); break;
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break;
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case XFER_MW_DMA_2:
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case XFER_MW_DMA_1:
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case XFER_MW_DMA_0:
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case XFER_SW_DMA_2:
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break;
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case XFER_PIO_4:
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case XFER_PIO_3:
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@ -174,8 +183,7 @@ static int it8213_tune_chipset (ide_drive_t *drive, byte xferspeed)
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return -1;
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}
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if (speed >= XFER_UDMA_0)
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{
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if (speed >= XFER_UDMA_0) {
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if (!(reg48 & u_flag))
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pci_write_config_byte(dev, 0x48, reg48 | u_flag);
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if (speed >= XFER_UDMA_5) {
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@ -186,14 +194,12 @@ static int it8213_tune_chipset (ide_drive_t *drive, byte xferspeed)
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if ((reg4a & a_speed) != u_speed)
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pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed);
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if (speed > XFER_UDMA_2)
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{
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if (speed > XFER_UDMA_2) {
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if (!(reg54 & v_flag))
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pci_write_config_byte(dev, 0x54, reg54 | v_flag);
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} else
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pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
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} else /*if(speed >= XFER_UDMA_0)*/
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{
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} else {
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if (reg48 & u_flag)
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pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
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if (reg4a & a_speed)
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@ -205,8 +211,7 @@ static int it8213_tune_chipset (ide_drive_t *drive, byte xferspeed)
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}
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it8213_tuneproc(drive, it8213_dma_2_pio(speed));
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return ide_config_drive_speed(drive, speed);
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}
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}
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/*
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* config_chipset_for_dma - configure for DMA
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@ -218,46 +223,15 @@ static int it8213_tune_chipset (ide_drive_t *drive, byte xferspeed)
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static int config_chipset_for_dma (ide_drive_t *drive)
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{
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u8 speed = ide_dma_speed(drive, it8213_ratemask(drive));
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if (!speed)
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{
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u8 tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL);
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speed = it8213_dma_2_pio(XFER_PIO_0 + tspeed);
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}
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// config_it8213_chipset_for_pio(drive, !speed);
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return 0;
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it8213_tune_chipset(drive, speed);
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return ide_dma_enable(drive);
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}
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/**
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* config_it8213_chipset_for_pio - set drive timings
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* @drive: drive to tune
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* @speed we want
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*
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* Compute the best pio mode we can for a given device. We must
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* pick a speed that does not cause problems with the other device
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* on the cable.
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*/
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/*
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static void config_it8213_chipset_for_pio (ide_drive_t *drive, byte set_speed)
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{
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ide_hwif_t *hwif = HWIF(drive);
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// u8 unit = drive->select.b.unit;
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ide_hwif_t *hwif = drive->hwif;
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ide_drive_t *pair = &hwif->drives[1-unit];
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u8 speed = 0, set_pio = ide_get_best_pio_mode(drive, 255, 5, NULL);
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u8 pair_pio;
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if(pair != NULL) {
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pair_pio = ide_get_best_pio_mode(pair, 255, 5, NULL);
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if(pair_pio < set_pio)
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set_pio = pair_pio;
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}
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it8213_tuneproc(drive, set_pio);
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speed = XFER_PIO_0 + set_pio;
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if (set_speed)
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(void) ide_config_drive_speed(drive, speed);
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}
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*/
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/**
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* it8213_configure_drive_for_dma - set up for DMA transfers
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* @drive: drive we are going to set up
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@ -270,26 +244,19 @@ static void config_it8213_chipset_for_pio (ide_drive_t *drive, byte set_speed)
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static int it8213_config_drive_for_dma (ide_drive_t *drive)
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{
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// ide_hwif_t *hwif = drive->hwif;
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// struct hd_driveid *id = drive->id;
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ide_hwif_t *hwif = HWIF(drive);
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ide_hwif_t *hwif = drive->hwif;
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if (ide_use_dma(drive)) {
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if (config_chipset_for_dma(drive))
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return hwif->ide_dma_on(drive);
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}
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// config_it8213_chipset_for_pio(drive, 1);
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hwif->tuneproc(drive, 255);
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hwif->speedproc(drive, XFER_PIO_0
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+ ide_get_best_pio_mode(drive, 255, 4, NULL));
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return hwif->ide_dma_off_quietly(drive);
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}
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static unsigned int __devinit init_chipset_it8213(struct pci_dev *dev, const char *name)
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{
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printk(KERN_INFO "it8213: controller in IDE mode.\n");
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return 0;
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}
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/**
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* init_hwif_it8213 - set up hwif structs
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* @hwif: interface to set up
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@ -302,9 +269,6 @@ static unsigned int __devinit init_chipset_it8213(struct pci_dev *dev, const cha
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static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
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{
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u8 reg42h = 0, ata66 = 0;
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u8 mask = 0x02;
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hwif->atapi_dma = 1;
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hwif->speedproc = &it8213_tune_chipset;
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hwif->tuneproc = &it8213_tuneproc;
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@ -315,19 +279,19 @@ static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
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hwif->drives[1].autotune = 1;
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if (!hwif->dma_base)
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goto fallback;
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return;
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hwif->atapi_dma = 1;
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hwif->ultra_mask = 0x7f;
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hwif->mwdma_mask = 0x07;
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hwif->swdma_mask = 0x07;
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hwif->mwdma_mask = 0x06;
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hwif->swdma_mask = 0x04;
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pci_read_config_byte(hwif->pci_dev, 0x42, ®42h);
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ata66 = (reg42h & mask) ? 0 : 1;
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ata66 = (reg42h & 0x02) ? 0 : 1;
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hwif->ide_dma_check = &it8213_config_drive_for_dma;
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if (!(hwif->udma_four))
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hwif->udma_four = ata66;
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// hwif->udma_four = 0;
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/*
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* The BIOS often doesn't set up DMA on this controller
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@ -338,17 +302,12 @@ static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
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hwif->drives[0].autodma = hwif->autodma;
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hwif->drives[1].autodma = hwif->autodma;
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return;
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fallback:
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hwif->autodma = 0;
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return;
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}
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#define DECLARE_ITE_DEV(name_str) \
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{ \
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.name = name_str, \
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.init_chipset = init_chipset_it8213, \
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.init_hwif = init_hwif_it8213, \
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.channels = 1, \
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.autodma = AUTODMA, \
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@ -379,7 +338,7 @@ static int __devinit it8213_init_one(struct pci_dev *dev, const struct pci_devic
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static struct pci_device_id it8213_pci_tbl[] = {
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{ PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8213, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
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{ PCI_VENDOR_ID_ITE, 0x8213, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ 0, },
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};
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@ -393,10 +352,11 @@ static struct pci_driver driver = {
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static int __init it8213_ide_init(void)
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{
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return ide_pci_register_driver(&driver); }
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return ide_pci_register_driver(&driver);
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}
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module_init(it8213_ide_init);
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MODULE_AUTHOR("Jack and Alan Cox"); /* Update this */
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MODULE_AUTHOR("Jack Lee, Alan Cox");
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MODULE_DESCRIPTION("PCI driver module for the ITE 8213");
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MODULE_LICENSE("GPL");
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