373e68b547
This updates the various boards for some of the recent I/O routine updates. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
154 lines
3.8 KiB
C
154 lines
3.8 KiB
C
/* $Id: cf-enabler.c,v 1.4 2004/02/22 22:44:36 kkojima Exp $
|
|
*
|
|
* linux/drivers/block/cf-enabler.c
|
|
*
|
|
* Copyright (C) 1999 Niibe Yutaka
|
|
* Copyright (C) 2000 Toshiharu Nozawa
|
|
* Copyright (C) 2001 A&D Co., Ltd.
|
|
*
|
|
* Enable the CF configuration.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
|
|
/*
|
|
* 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
|
|
*/
|
|
#if defined(CONFIG_IDE) && defined(CONFIG_CPU_SH4)
|
|
/* SH4 can't access PCMCIA interface through P2 area.
|
|
* we must remap it with appropreate attribute bit of the page set.
|
|
* this part is based on Greg Banks' hd64465_ss.c implementation - Masahiro Abe */
|
|
|
|
#if defined(CONFIG_CF_AREA6)
|
|
#define slot_no 0
|
|
#else
|
|
#define slot_no 1
|
|
#endif
|
|
|
|
/* use this pointer to access to directly connected compact flash io area*/
|
|
void *cf_io_base;
|
|
|
|
static int __init allocate_cf_area(void)
|
|
{
|
|
pgprot_t prot;
|
|
unsigned long paddrbase, psize;
|
|
|
|
/* open I/O area window */
|
|
paddrbase = virt_to_phys((void*)CONFIG_CF_BASE_ADDR);
|
|
psize = PAGE_SIZE;
|
|
prot = PAGE_KERNEL_PCC(slot_no, _PAGE_PCC_IO16);
|
|
cf_io_base = p3_ioremap(paddrbase, psize, prot.pgprot);
|
|
if (!cf_io_base) {
|
|
printk("allocate_cf_area : can't open CF I/O window!\n");
|
|
return -ENOMEM;
|
|
}
|
|
/* printk("p3_ioremap(paddr=0x%08lx, psize=0x%08lx, prot=0x%08lx)=0x%08lx\n",
|
|
paddrbase, psize, prot.pgprot, cf_io_base);*/
|
|
|
|
/* XXX : do we need attribute and common-memory area also? */
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int __init cf_init_default(void)
|
|
{
|
|
/* You must have enabled the card, and set the level interrupt
|
|
* before reaching this point. Possibly in boot ROM or boot loader.
|
|
*/
|
|
#if defined(CONFIG_IDE) && defined(CONFIG_CPU_SH4)
|
|
allocate_cf_area();
|
|
#endif
|
|
#if defined(CONFIG_SH_UNKNOWN)
|
|
/* This should be done in each board's init_xxx_irq. */
|
|
make_imask_irq(14);
|
|
disable_irq(14);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_SH_SOLUTION_ENGINE)
|
|
#include <asm/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;
|
|
}
|
|
#endif
|
|
|
|
int __init cf_init(void)
|
|
{
|
|
#if defined(CONFIG_SH_SOLUTION_ENGINE)
|
|
if (MACH_SE)
|
|
return cf_init_se();
|
|
#endif
|
|
return cf_init_default();
|
|
}
|
|
|
|
__initcall (cf_init);
|