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/* $Id: cf-enabler.c,v 1.2 2000/06/08 05:50:10 gniibe Exp $
*
* linux/drivers/block/cf-enabler.c
*
* Copyright (C) 1999 Niibe Yutaka
* Copyright (C) 2000 Toshiharu Nozawa
*
* Enable the CF configuration.
*/
#include <linux/init.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/hitachi_se.h>
/*
* SolutionEngine
*
* 0xB8400000 : Common Memory
* 0xB8500000 : Attribute
* 0xB8600000 : I/O
*/
static int __init cf_init_se(void)
{
if ((ctrl_inw(MRSHPC_CSR) & 0x000c) != 0)
return 0; /* Not detected */
if ((ctrl_inw(MRSHPC_CSR) & 0x0080) == 0) {
ctrl_outw(0x0674, MRSHPC_CPWCR); /* Card Vcc is 3.3v? */
} else {
ctrl_outw(0x0678, MRSHPC_CPWCR); /* Card Vcc is 5V */
}
/*
* PC-Card window open
* flag == COMMON/ATTRIBUTE/IO
*/
/* common window open */
ctrl_outw(0x8a84, MRSHPC_MW0CR1);/* window 0xb8400000 */
if((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
/* common mode & bus width 16bit SWAP = 1*/
ctrl_outw(0x0b00, MRSHPC_MW0CR2);
else
/* common mode & bus width 16bit SWAP = 0*/
ctrl_outw(0x0300, MRSHPC_MW0CR2);
/* attribute window open */
ctrl_outw(0x8a85, MRSHPC_MW1CR1);/* window 0xb8500000 */
if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
/* attribute mode & bus width 16bit SWAP = 1*/
ctrl_outw(0x0a00, MRSHPC_MW1CR2);
else
/* attribute mode & bus width 16bit SWAP = 0*/
ctrl_outw(0x0200, MRSHPC_MW1CR2);
/* I/O window open */
ctrl_outw(0x8a86, MRSHPC_IOWCR1);/* I/O window 0xb8600000 */
ctrl_outw(0x0008, MRSHPC_CDCR); /* I/O card mode */
if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
ctrl_outw(0x0a00, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1*/
else
ctrl_outw(0x0200, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0*/
ctrl_outw(0x2000, MRSHPC_ICR);
ctrl_outb(0x00, PA_MRSHPC_MW2 + 0x206);
ctrl_outb(0x42, PA_MRSHPC_MW2 + 0x200);
return 0;
}
#define CF_CIS_BASE 0xb8000000
/*
* You can connect Compact Flash directly to the bus of SuperH.
* This is the enabler for that.
*
* SIM: How generic is this really? It looks pretty board, or at
* least SH sub-type, specific to me.
* I know it doesn't work on the Overdrive!
*/
/*
* 0xB8000000 : Attribute
* 0xB8001000 : Common Memory
* 0xBA000000 : I/O
*/
static int __init cf_init_default(void)
{
/* Enable the card, and set the level interrupt */
ctrl_outw(0x0042, CF_CIS_BASE+0x0200);
make_imask_irq(14);
disable_irq(14);
return 0;
}
int __init cf_init(void)
{
if (MACH_SE) {
return cf_init_se();
}
return cf_init_default();
}
__initcall (cf_init);
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