Commit 26ccb802 authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by Bartlomiej Zolnierkiewicz

hpt366: merge HPT37x speedproc handlers

Continue with the driver rewrite:

- move the interrupt twiddling code from the speedproc handlers into the
    init_hwif_hpt366 which allows to merge the two HPT37x speedproc handlers
    into one;

- get rid of in init_hpt366 which solely consists of the duplicate code, then
    fold init_hpt37x() into init_chipset_hpt366();

- fix hpt3xx_tune_drive() to always set the PIO mode requested, not the best
    possible one, change hpt366_config_drive_xfer_rate() accordingly, simplify
    it a bit;

- group all the DMA related code together init_hwif_hpt366(), and generally
    clean up and beautify it.
Signed-off-by: default avatarSergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent abc4ad4c
/*
* linux/drivers/ide/pci/hpt366.c Version 0.50 May 28, 2006
* linux/drivers/ide/pci/hpt366.c Version 0.51 Jun 04, 2006
*
* Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org>
* Portions Copyright (C) 2001 Sun Microsystems, Inc.
......@@ -83,13 +83,16 @@
* - cache the channel's MCRs' offset; only touch the relevant MCR when detecting
* the cable type on HPT374's function 1
* - rename all the register related variables consistently
* - make HPT36x's speedproc handler look the same way as HPT37x ones; fix the
* PIO timing register mask for HPT37x
* - move the interrupt twiddling code from the speedproc handlers into the
* init_hwif handler, also grouping all the DMA related code together there;
* simplify the init_chipset handler
* - merge two HPT37x speedproc handlers and fix the PIO timing register mask
* there; make HPT36x speedproc handler look the same way as the HPT37x one
* - fix the tuneproc handler to always set the PIO mode requested, not the
* best possible one
* <source@mvista.com>
*
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
......@@ -507,19 +510,9 @@ static int hpt36x_tune_chipset(ide_drive_t *drive, u8 xferspeed)
struct hpt_info *info = ide_get_hwifdata (hwif);
u8 speed = hpt3xx_ratefilter(drive, xferspeed);
u8 itr_addr = drive->dn ? 0x44 : 0x40;
u8 mcr_addr = hwif->select_data + 1;
u8 mcr = 0;
u32 new_itr, old_itr = 0;
u32 itr_mask = (speed < XFER_MW_DMA_0) ? 0x30070000 : 0xc0000000;
/*
* Disable the "fast interrupt" prediction.
*/
pci_read_config_byte(dev, mcr_addr, &mcr);
if (mcr & 0x80)
pci_write_config_byte(dev, mcr_addr, mcr & ~0x80);
new_itr = pci_bus_clock_list(speed, info->speed);
u32 new_itr = pci_bus_clock_list(speed, info->speed);
u32 old_itr = 0;
/*
* Disable on-chip PIO FIFO/buffer (and PIO MST mode as well)
......@@ -534,38 +527,16 @@ static int hpt36x_tune_chipset(ide_drive_t *drive, u8 xferspeed)
return ide_config_drive_speed(drive, speed);
}
static int hpt370_tune_chipset(ide_drive_t *drive, u8 xferspeed)
static int hpt37x_tune_chipset(ide_drive_t *drive, u8 xferspeed)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
struct hpt_info *info = ide_get_hwifdata (hwif);
u8 speed = hpt3xx_ratefilter(drive, xferspeed);
u8 mcr_addr = hwif->select_data + 1;
u8 itr_addr = 0x40 + (drive->dn * 4);
u8 new_mcr = 0, old_mcr = 0;
u32 new_itr, old_itr = 0;
u32 itr_mask = (speed < XFER_MW_DMA_0) ? 0x303c0000 : 0xc0000000;
/*
* Disable the "fast interrupt" prediction.
* don't holdoff on interrupts. (== 0x01 despite what the docs say)
*/
pci_read_config_byte(dev, mcr_addr, &old_mcr);
new_mcr = old_mcr;
if (new_mcr & 0x02)
new_mcr &= ~0x02;
#ifdef HPT_DELAY_INTERRUPT
if (new_mcr & 0x01)
new_mcr &= ~0x01;
#else
if ((new_mcr & 0x01) == 0)
new_mcr |= 0x01;
#endif
if (new_mcr != old_mcr)
pci_write_config_byte(dev, mcr_addr, new_mcr);
new_itr = pci_bus_clock_list(speed, info->speed);
u32 new_itr = pci_bus_clock_list(speed, info->speed);
u32 old_itr = 0;
pci_read_config_dword(dev, itr_addr, &old_itr);
new_itr = (new_itr & ~itr_mask) | (old_itr & itr_mask);
......@@ -577,71 +548,34 @@ static int hpt370_tune_chipset(ide_drive_t *drive, u8 xferspeed)
return ide_config_drive_speed(drive, speed);
}
static int hpt372_tune_chipset(ide_drive_t *drive, u8 xferspeed)
static int hpt3xx_tune_chipset(ide_drive_t *drive, u8 speed)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
struct hpt_info *info = ide_get_hwifdata (hwif);
u8 speed = hpt3xx_ratefilter(drive, xferspeed);
u8 mcr_addr = hwif->select_data + 1;
u8 itr_addr = 0x40 + (drive->dn * 4);
u8 mcr = 0;
u32 new_itr, old_itr = 0;
u32 itr_mask = (speed < XFER_MW_DMA_0) ? 0x303c0000 : 0xc0000000;
/*
* Disable the "fast interrupt" prediction.
* don't holdoff on interrupts. (== 0x01 despite what the docs say)
*/
pci_read_config_byte (dev, mcr_addr, &mcr);
pci_write_config_byte(dev, mcr_addr, (mcr & ~0x07));
new_itr = pci_bus_clock_list(speed, info->speed);
pci_read_config_dword(dev, itr_addr, &old_itr);
new_itr = (new_itr & ~itr_mask) | (old_itr & itr_mask);
if (speed < XFER_MW_DMA_0)
new_itr &= ~0x80000000; /* Disable on-chip PIO FIFO/buffer */
pci_write_config_dword(dev, itr_addr, new_itr);
return ide_config_drive_speed(drive, speed);
}
static int hpt3xx_tune_chipset (ide_drive_t *drive, u8 speed)
{
ide_hwif_t *hwif = drive->hwif;
struct hpt_info *info = ide_get_hwifdata(hwif);
if (info->revision >= 8)
return hpt372_tune_chipset(drive, speed); /* not a typo */
else if (info->revision >= 5)
return hpt372_tune_chipset(drive, speed);
else if (info->revision >= 3)
return hpt370_tune_chipset(drive, speed);
if (info->revision >= 3)
return hpt37x_tune_chipset(drive, speed);
else /* hpt368: hpt_minimum_revision(dev, 2) */
return hpt36x_tune_chipset(drive, speed);
}
static void hpt3xx_tune_drive (ide_drive_t *drive, u8 pio)
static void hpt3xx_tune_drive(ide_drive_t *drive, u8 pio)
{
pio = ide_get_best_pio_mode(drive, 255, pio, NULL);
(void) hpt3xx_tune_chipset(drive, (XFER_PIO_0 + pio));
pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
(void) hpt3xx_tune_chipset (drive, XFER_PIO_0 + pio);
}
/*
* This allows the configuration of ide_pci chipset registers
* for cards that learn about the drive's UDMA, DMA, PIO capabilities
* after the drive is reported by the OS. Initially for designed for
* after the drive is reported by the OS. Initially designed for
* HPT366 UDMA chipset by HighPoint|Triones Technologies, Inc.
*
* check_in_drive_lists(drive, bad_ata66_4)
* check_in_drive_lists(drive, bad_ata66_3)
* check_in_drive_lists(drive, bad_ata33)
*
*/
static int config_chipset_for_dma (ide_drive_t *drive)
static int config_chipset_for_dma(ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, hpt3xx_ratemask(drive));
ide_hwif_t *hwif = drive->hwif;
ide_hwif_t *hwif = HWIF(drive);
struct hpt_info *info = ide_get_hwifdata(hwif);
if (!speed)
......@@ -666,7 +600,7 @@ static int hpt3xx_quirkproc(ide_drive_t *drive)
return 0;
}
static void hpt3xx_intrproc (ide_drive_t *drive)
static void hpt3xx_intrproc(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
......@@ -676,7 +610,7 @@ static void hpt3xx_intrproc (ide_drive_t *drive)
hwif->OUTB(drive->ctl | 2, IDE_CONTROL_REG);
}
static void hpt3xx_maskproc (ide_drive_t *drive, int mask)
static void hpt3xx_maskproc(ide_drive_t *drive, int mask)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
......@@ -705,25 +639,22 @@ static void hpt3xx_maskproc (ide_drive_t *drive, int mask)
IDE_CONTROL_REG);
}
static int hpt366_config_drive_xfer_rate (ide_drive_t *drive)
static int hpt366_config_drive_xfer_rate(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
ide_hwif_t *hwif = HWIF(drive);
struct hd_driveid *id = drive->id;
drive->init_speed = 0;
if ((id->capability & 1) && drive->autodma) {
if (ide_use_dma(drive)) {
if (config_chipset_for_dma(drive))
return hwif->ide_dma_on(drive);
}
if (ide_use_dma(drive) && 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:
hpt3xx_tune_drive(drive, 5);
hpt3xx_tune_drive(drive, 255);
return hwif->ide_dma_off_quietly(drive);
}
/* IORDY not supported */
......@@ -1154,34 +1085,8 @@ init_hpt37X_done:
udelay(100);
}
static int __devinit init_hpt37x(struct pci_dev *dev)
{
u8 scr1;
pci_read_config_byte (dev, 0x5a, &scr1);
/* interrupt force enable */
pci_write_config_byte(dev, 0x5a, (scr1 & ~0x10));
return 0;
}
static int __devinit init_hpt366(struct pci_dev *dev)
{
u8 mcr = 0;
/*
* Disable the "fast interrupt" prediction.
*/
pci_read_config_byte(dev, 0x51, &mcr);
if (mcr & 0x80)
pci_write_config_byte(dev, 0x51, mcr & ~0x80);
return 0;
}
static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const char *name)
{
int ret = 0;
/*
* FIXME: Not portable. Also, why do we enable the ROM in the first place?
* We don't seem to be using it.
......@@ -1195,23 +1100,25 @@ static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const cha
pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
if (hpt_revision(dev) >= 3)
ret = init_hpt37x(dev);
else
ret = init_hpt366(dev);
if (hpt_revision(dev) >= 3) {
u8 scr1 = 0;
if (ret)
return ret;
/* Interrupt force enable. */
pci_read_config_byte(dev, 0x5a, &scr1);
if (scr1 & 0x10)
pci_write_config_byte(dev, 0x5a, scr1 & ~0x10);
}
return dev->irq;
}
static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
struct pci_dev *dev = hwif->pci_dev;
struct hpt_info *info = ide_get_hwifdata(hwif);
int serialize = HPT_SERIALIZE_IO;
u8 scr1 = 0, ata66 = (hwif->channel) ? 0x01 : 0x02;
u8 new_mcr, old_mcr = 0;
/* Cache the channel's MISC. control registers' offset */
hwif->select_data = hwif->channel ? 0x54 : 0x50;
......@@ -1238,6 +1145,41 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
hwif->rw_disk = &hpt3xxn_rw_disk;
}
/* Serialize access to this device if needed */
if (serialize && hwif->mate)
hwif->serialized = hwif->mate->serialized = 1;
/*
* Disable the "fast interrupt" prediction. Don't hold off
* on interrupts. (== 0x01 despite what the docs say)
*/
pci_read_config_byte(dev, hwif->select_data + 1, &old_mcr);
if (info->revision >= 5) /* HPT372 and newer */
new_mcr = old_mcr & ~0x07;
else if (info->revision >= 3) { /* HPT370 and HPT370A */
new_mcr = old_mcr;
new_mcr &= ~0x02;
#ifdef HPT_DELAY_INTERRUPT
new_mcr &= ~0x01;
#else
new_mcr |= 0x01;
#endif
} else /* HPT366 and HPT368 */
new_mcr = old_mcr & ~0x80;
if (new_mcr != old_mcr)
pci_write_config_byte(dev, hwif->select_data + 1, new_mcr);
if (!hwif->dma_base) {
hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
return;
}
hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
/*
* The HPT37x uses the CBLID pins as outputs for MA15/MA16
* address lines to access an external EEPROM. To read valid
......@@ -1272,54 +1214,30 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
} else
pci_read_config_byte (dev, 0x5a, &scr1);
/* Serialize access to this device */
if (serialize && hwif->mate)
hwif->serialized = hwif->mate->serialized = 1;
if (!hwif->udma_four)
hwif->udma_four = (scr1 & ata66) ? 0 : 1;
/*
* Set up ioctl for power status.
* NOTE: power affects both drives on each channel.
*/
hwif->busproc = &hpt3xx_busproc;
if (!hwif->dma_base) {
hwif->drives[0].autotune = 1;
hwif->drives[1].autotune = 1;
return;
}
hwif->ide_dma_check = &hpt366_config_drive_xfer_rate;
hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
if (!(hwif->udma_four))
hwif->udma_four = ((scr1 & ata66) ? 0 : 1);
hwif->ide_dma_check = &hpt366_config_drive_xfer_rate;
if (info->revision >= 8) {
hwif->ide_dma_test_irq = &hpt374_ide_dma_test_irq;
hwif->ide_dma_end = &hpt374_ide_dma_end;
} else if (info->revision >= 5) {
hwif->ide_dma_test_irq = &hpt374_ide_dma_test_irq;
hwif->ide_dma_end = &hpt374_ide_dma_end;
if (info->revision >= 5) {
hwif->ide_dma_test_irq = &hpt374_ide_dma_test_irq;
hwif->ide_dma_end = &hpt374_ide_dma_end;
} else if (info->revision >= 3) {
hwif->dma_start = &hpt370_ide_dma_start;
hwif->ide_dma_end = &hpt370_ide_dma_end;
hwif->ide_dma_timeout = &hpt370_ide_dma_timeout;
hwif->ide_dma_lostirq = &hpt370_ide_dma_lostirq;
} else if (info->revision >= 2)
hwif->ide_dma_lostirq = &hpt366_ide_dma_lostirq;
else
hwif->ide_dma_lostirq = &hpt366_ide_dma_lostirq;
hwif->dma_start = &hpt370_ide_dma_start;
hwif->ide_dma_end = &hpt370_ide_dma_end;
hwif->ide_dma_timeout = &hpt370_ide_dma_timeout;
hwif->ide_dma_lostirq = &hpt370_ide_dma_lostirq;
} else
hwif->ide_dma_lostirq = &hpt366_ide_dma_lostirq;
if (!noautodma)
hwif->autodma = 1;
hwif->drives[0].autodma = hwif->autodma;
hwif->drives[1].autodma = hwif->autodma;
hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
}
static void __devinit init_dma_hpt366(ide_hwif_t *hwif, unsigned long dmabase)
{
struct pci_dev *dev = hwif->pci_dev;
struct pci_dev *dev = hwif->pci_dev;
struct hpt_info *info = ide_get_hwifdata(hwif);
u8 masterdma = 0, slavedma = 0;
u8 dma_new = 0, dma_old = 0;
......@@ -1334,7 +1252,7 @@ static void __devinit init_dma_hpt366(ide_hwif_t *hwif, unsigned long dmabase)
return;
}
dma_old = hwif->INB(dmabase+2);
dma_old = hwif->INB(dmabase + 2);
local_irq_save(flags);
......
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