add real vmapbuf/vunmapbuf routines. needed for VS4000 SCSI support.
This commit is contained in:
parent
e42cc6e32e
commit
e8c7c2f842
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: param.h,v 1.41 2000/02/11 19:30:30 thorpej Exp $ */
|
||||
/* $NetBSD: param.h,v 1.42 2000/03/07 00:05:59 matt Exp $ */
|
||||
/*-
|
||||
* Copyright (c) 1990 The Regents of the University of California.
|
||||
* All rights reserved.
|
||||
|
@ -73,6 +73,7 @@
|
|||
#define VAX_PGSHIFT 9
|
||||
#define VAX_NBPG (1 << VAX_PGSHIFT)
|
||||
#define VAX_PGOFSET (VAX_NBPG - 1)
|
||||
#define VAX_NPTEPG (VAX_NBPG / 4)
|
||||
|
||||
#define KERNBASE 0x80000000 /* start of kernel virtual */
|
||||
|
||||
|
@ -204,9 +205,6 @@
|
|||
#define spl6() splx(0x16)
|
||||
#define spl7() splx(0x17)
|
||||
|
||||
#define vmapbuf(p,q)
|
||||
#define vunmapbuf(p,q)
|
||||
|
||||
/* Prototype needed for delay() */
|
||||
#ifndef _LOCORE
|
||||
void delay __P((int));
|
||||
|
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: vmparam.h,v 1.31 2000/03/04 07:27:49 matt Exp $ */
|
||||
/* $NetBSD: vmparam.h,v 1.32 2000/03/07 00:05:59 matt Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1990 The Regents of the University of California.
|
||||
|
@ -130,4 +130,7 @@ struct pmap_physseg {
|
|||
#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE)
|
||||
#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(0xC0000000))
|
||||
|
||||
#define USRIOSIZE (8 * VAX_NPTEPG) /* 512MB */
|
||||
#define VM_PHYS_SIZE (USRIOSIZE*VAX_NBPG)
|
||||
|
||||
#endif
|
||||
|
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: machdep.c,v 1.94 2000/03/04 07:27:49 matt Exp $ */
|
||||
/* $NetBSD: machdep.c,v 1.95 2000/03/07 00:05:59 matt Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1994, 1998 Ludd, University of Lule}, Sweden.
|
||||
|
@ -133,6 +133,7 @@ static struct map iomap[IOMAPSZ];
|
|||
|
||||
vm_map_t exec_map = NULL;
|
||||
vm_map_t mb_map = NULL;
|
||||
vm_map_t phys_map = NULL;
|
||||
|
||||
#ifdef DEBUG
|
||||
int iospace_inited = 0;
|
||||
|
@ -234,6 +235,13 @@ cpu_startup()
|
|||
exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
|
||||
NCARGS, VM_MAP_PAGEABLE, FALSE, NULL);
|
||||
|
||||
/*
|
||||
* Allocate a submap for physio. This map effectively limits the
|
||||
* number of processes doing physio at any one time.
|
||||
*/
|
||||
phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
|
||||
VM_PHYS_SIZE, 0, FALSE, NULL);
|
||||
|
||||
format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
|
||||
printf("avail memory = %s\n", pbuf);
|
||||
format_bytes(pbuf, sizeof(pbuf), bufpages * NBPG);
|
||||
|
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: vm_machdep.c,v 1.56 2000/01/20 22:19:00 sommerfeld Exp $ */
|
||||
/* $NetBSD: vm_machdep.c,v 1.57 2000/03/07 00:05:59 matt Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1994 Ludd, University of Lule}, Sweden.
|
||||
|
@ -308,3 +308,59 @@ iounaccess(vaddr, npgs)
|
|||
pte[i] = 0;
|
||||
mtpr(0, PR_TBIA);
|
||||
}
|
||||
|
||||
extern vm_map_t phys_map;
|
||||
|
||||
/*
|
||||
* Map a user I/O request into kernel virtual address space.
|
||||
* Note: the pages are already locked by uvm_vslock(), so we
|
||||
* do not need to pass an access_type to pmap_enter().
|
||||
*/
|
||||
void
|
||||
vmapbuf(bp, len)
|
||||
struct buf *bp;
|
||||
vsize_t len;
|
||||
{
|
||||
vaddr_t faddr, taddr, off;
|
||||
paddr_t pa;
|
||||
struct proc *p;
|
||||
|
||||
if ((bp->b_flags & B_PHYS) == 0)
|
||||
panic("vmapbuf");
|
||||
p = bp->b_proc;
|
||||
faddr = trunc_page(bp->b_saveaddr = bp->b_data);
|
||||
off = (vaddr_t)bp->b_data - faddr;
|
||||
len = round_page(off + len);
|
||||
taddr = uvm_km_valloc_wait(phys_map, len);
|
||||
bp->b_data = (caddr_t)(taddr + off);
|
||||
len = atop(len);
|
||||
while (len--) {
|
||||
if (pmap_extract(vm_map_pmap(&p->p_vmspace->vm_map), faddr,
|
||||
&pa) == FALSE)
|
||||
panic("vmapbuf: null page frame");
|
||||
pmap_enter(vm_map_pmap(phys_map), taddr, trunc_page(pa),
|
||||
VM_PROT_READ|VM_PROT_WRITE, PMAP_WIRED);
|
||||
faddr += PAGE_SIZE;
|
||||
taddr += PAGE_SIZE;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Unmap a previously-mapped user I/O request.
|
||||
*/
|
||||
void
|
||||
vunmapbuf(bp, len)
|
||||
struct buf *bp;
|
||||
vsize_t len;
|
||||
{
|
||||
vaddr_t addr, off;
|
||||
|
||||
if ((bp->b_flags & B_PHYS) == 0)
|
||||
panic("vunmapbuf");
|
||||
addr = trunc_page(bp->b_data);
|
||||
off = (vaddr_t)bp->b_data - addr;
|
||||
len = round_page(off + len);
|
||||
uvm_km_free_wakeup(phys_map, addr, len);
|
||||
bp->b_data = bp->b_saveaddr;
|
||||
bp->b_saveaddr = NULL;
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue