hi,
I'm currently developing a ide driver for an embedded ARM device.
The device hardware is somewhat wired, as all IDE access must
be done 16bit, even the control bytes. I therefore need special
access functions.
I do this to register special IN/OUT functions:
-----%<---some code delete for brevity-------------
void empca400_fixup(
ide_hwif_t *hwif
)
{
hwif->mmio = 2;
hwif->OUTB = &empca400_ide_outb;
hwif->OUTBSYNC = &empca400_ide_outbsync;
hwif->OUTW = &empca400_ide_outw;
hwif->OUTSW = &empca400_ide_outsw;
:
}
static int __init empca400ide_init(void)
{
:
memset(&hw, 0, sizeof(hw));
base = 0x56000000;
aux = base + 0x10;
vbase = (unsigned long) ioremap(base, 0x10);
vaux = vbase + 0x20;
for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
hw.io_ports[i] = (unsigned long)vbase;
vbase += 4;
}
hw.io_ports[IDE_CONTROL_OFFSET] = vaux + (6 * 0x2);
hw.irq = 20; /* GPIO3 = IRQ20 */
hw.dma = NO_DMA;
hw.chipset = ide_generic;
ret = ide_register_hw_with_fixup(&hw, &hwif, empca400_fixup);
:
}
-----------------------------------------------------
However, in probe_hwif_init_with_fixup() I find this sequence:
-----%<-----------------
int probe_hwif_init_with_fixup(ide_hwif_t *hwif, void (*fixup)(ide_hwif_t *hwif))
{
probe_hwif(hwif);
if (fixup)
fixup(hwif);
-------------------------
fixup() gets called after probe_hwif, hence my special function
pointers will not be installed in time.
Shouldn't probe_hwif_init_with_fixup() call the fixup() first? If
not, what is fixup() good for, and how can I get my function
pointers registered before probe_hwif()?
mfg
--
----------------------
Stefan Althöfer (stefan.althoefer@xxxxxxx)
Janz Automationssysteme AG
- Automation Intelligence -
Member of the Janz company group
Im Doerener Feld 8
33100 Paderborn - Germany
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