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add shpcmcia_mem*() for SH4_PCMCIA

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This commit is contained in:
msaitoh 2000-11-08 01:01:22 +00:00
parent 63369ae96e
commit 5cb13a674a
1 changed files with 181 additions and 1 deletions
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182
sys/arch/evbsh3/evbsh3/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.19 2000/09/26 22:23:55 msaitoh Exp $ */
/* $NetBSD: machdep.c,v 1.20 2000/11/08 01:01:22 msaitoh Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
@ -849,6 +849,186 @@ sh_memio_unmap(t, bsh, size)
return;
}
#ifdef SH4_PCMCIA
int
shpcmcia_memio_map(t, bpa, size, flags, bshp)
bus_space_tag_t t;
bus_addr_t bpa;
bus_size_t size;
int flags;
bus_space_handle_t *bshp;
{
int error;
struct extent *ex;
bus_space_tag_t pt = t & ~SH3_BUS_SPACE_PCMCIA_8BIT;
if (pt != SH3_BUS_SPACE_PCMCIA_IO &&
pt != SH3_BUS_SPACE_PCMCIA_MEM &&
pt != SH3_BUS_SPACE_PCMCIA_ATT) {
*bshp = (bus_space_handle_t)bpa;
return 0;
}
ex = iomem_ex;
#if 0
/*
* Before we go any further, let's make sure that this
* region is available.
*/
error = extent_alloc_region(ex, bpa, size,
EX_NOWAIT | EX_MALLOCOK );
if (error){
printf("sh3_pcmcia_memio_map:extent_alloc_region error\n");
return (error);
}
#endif
/*
* For memory space, map the bus physical address to
* a kernel virtual address.
*/
error = shpcmcia_mem_add_mapping(bpa, size, (int)t, bshp );
#if 0
if (error) {
if (extent_free(ex, bpa, size, EX_NOWAIT | EX_MALLOCOK )) {
printf("sh3_pcmcia_memio_map: pa 0x%lx, size 0x%lx\n",
bpa, size);
printf("sh3_pcmcia_memio_map: can't free region\n");
}
}
#endif
return (error);
}
int
shpcmcia_mem_add_mapping(bpa, size, type, bshp)
bus_addr_t bpa;
bus_size_t size;
int type;
bus_space_handle_t *bshp;
{
u_long pa, endpa;
vaddr_t va;
pt_entry_t *pte;
unsigned int m = 0;
int io_type = type & ~SH3_BUS_SPACE_PCMCIA_8BIT;
pa = sh3_trunc_page(bpa);
endpa = sh3_round_page(bpa + size);
#ifdef DIAGNOSTIC
if (endpa <= pa)
panic("sh3_pcmcia_mem_add_mapping: overflow");
#endif
va = uvm_km_valloc(kernel_map, endpa - pa);
if (va == 0){
printf("shpcmcia_add_mapping: nomem \n");
return (ENOMEM);
}
*bshp = (bus_space_handle_t)(va + (bpa & PGOFSET));
if( io_type == SH3_BUS_SPACE_PCMCIA_IO ){
m = PG_PCMCIA_IO;
}
else if( io_type == SH3_BUS_SPACE_PCMCIA_MEM ){
m = PG_PCMCIA_MEM;
}
else if( io_type == SH3_BUS_SPACE_PCMCIA_ATT ){
m = PG_PCMCIA_ATT;
}
if( type & SH3_BUS_SPACE_PCMCIA_8BIT ){
m |= PG_PCMCIA_8;
}
for (; pa < endpa; pa += NBPG, va += NBPG) {
pmap_enter(pmap_kernel(), va, pa,
VM_PROT_READ | VM_PROT_WRITE, TRUE, 0);
pte = kvtopte(va);
*pte &= ~PG_N;
*pte |= m;
pmap_update_pg(va);
}
return 0;
}
void
shpcmcia_memio_unmap(t, bsh, size)
bus_space_tag_t t;
bus_space_handle_t bsh;
bus_size_t size;
{
struct extent *ex;
u_long va, endva;
bus_addr_t bpa;
bus_space_tag_t pt = t & ~SH3_BUS_SPACE_PCMCIA_8BIT;
if (pt != SH3_BUS_SPACE_PCMCIA_IO &&
pt != SH3_BUS_SPACE_PCMCIA_MEM &&
pt != SH3_BUS_SPACE_PCMCIA_ATT) {
return ;
}
ex = iomem_ex;
va = sh3_trunc_page(bsh);
endva = sh3_round_page(bsh + size);
#ifdef DIAGNOSTIC
if (endva <= va)
panic("sh3_pcmcia_memio_unmap: overflow");
#endif
bpa = pmap_extract(pmap_kernel(), va) + (bsh & PGOFSET);
/*
* Free the kernel virtual mapping.
*/
uvm_km_free(kernel_map, va, endva - va);
#if 0
if (extent_free(ex, bpa, size,
EX_NOWAIT | EX_MALLOCOK)) {
printf("sh3_pcmcia_memio_unmap: %s 0x%lx, size 0x%lx\n",
"pa", bpa, size);
printf("sh3_pcmcia_memio_unmap: can't free region\n");
}
#endif
}
void
shpcmcia_memio_free(t, bsh, size)
bus_space_tag_t t;
bus_space_handle_t bsh;
bus_size_t size;
{
/* sh3_pcmcia_memio_unmap() does all that we need to do. */
shpcmcia_memio_unmap(t, bsh, size);
}
int
shpcmcia_memio_subregion(t, bsh, offset, size, nbshp)
bus_space_tag_t t;
bus_space_handle_t bsh;
bus_size_t offset, size;
bus_space_handle_t *nbshp;
{
*nbshp = bsh + offset;
return (0);
}
#endif /* SH4_PCMCIA */
#if !defined(DONT_INIT_BSC)
/*
* InitializeBsc