UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

aec62xx: fix PIO/DMA setup issues 

Teach the driver's tuneproc() method to do PIO auto-runing properly since it
treated 5 instead of 255 as auto-tune request, and also passed the mode limit
of PIO5 to ide_get_best_pio_mode() despite supporting up to PIO4 only.

While at it, also:

- remove the driver's wrong claim about supporting SWDMA modes;

- stop hooking ide_dma_timeout() method as the handler clearly doesn't fit for
  the task...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Sergei Shtylyov 2007-05-05 22:03:50 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 66602c83dc
commit 826a1b6502
1 changed files with 6 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/ide/pci/aec62xx.c
View File

@ -1,7 +1,8 @@
/*
* linux/drivers/ide/pci/aec62xx.c Version 0.11 March 27, 2002
* linux/drivers/ide/pci/aec62xx.c Version 0.21 Apr 21, 2007
*
* Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
*
*/
@ -193,18 +194,8 @@ static int config_chipset_for_dma (ide_drive_t *drive)
static void aec62xx_tune_drive (ide_drive_t *drive, u8 pio)
{
u8 speed = 0;
u8 new_pio = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL);
switch(pio) {
case 5: speed = new_pio; break;
case 4: speed = XFER_PIO_4; break;
case 3: speed = XFER_PIO_3; break;
case 2: speed = XFER_PIO_2; break;
case 1: speed = XFER_PIO_1; break;
default: speed = XFER_PIO_0; break;
}
(void) aec62xx_tune_chipset(drive, speed);
pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
(void) aec62xx_tune_chipset(drive, pio + XFER_PIO_0);
}
static int aec62xx_config_drive_xfer_rate (ide_drive_t *drive)
@ -213,7 +204,7 @@ static int aec62xx_config_drive_xfer_rate (ide_drive_t *drive)
return 0;
if (ide_use_fast_pio(drive))
aec62xx_tune_drive(drive, 5);
aec62xx_tune_drive(drive, 255);
return -1;
}
@ -288,11 +279,10 @@ static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
hwif->swdma_mask = 0x07;
hwif->ide_dma_check = &aec62xx_config_drive_xfer_rate;
hwif->ide_dma_lostirq = &aec62xx_irq_timeout;
hwif->ide_dma_timeout = &aec62xx_irq_timeout;
if (!noautodma)
hwif->autodma = 1;
hwif->drives[0].autodma = hwif->autodma;