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[src/trunk]: src/sys/arch/pica/dev Moved to /cvsroot/syssrc/sys/arch/arc/dev/...
details: https://anonhg.NetBSD.org/src/rev/ac62bf60b778
branches: trunk
changeset: 480961:ac62bf60b778
user: soda <soda%NetBSD.org@localhost>
date: Sun Jan 23 20:08:08 2000 +0000
description:
Moved to /cvsroot/syssrc/sys/arch/arc/dev/dma.c,v
diffstat:
sys/arch/pica/dev/dma.c | 409 ------------------------------------------------
1 files changed, 0 insertions(+), 409 deletions(-)
diffs (truncated from 413 to 300 lines):
diff -r 274b03a77a9a -r ac62bf60b778 sys/arch/pica/dev/dma.c
--- a/sys/arch/pica/dev/dma.c Sun Jan 23 20:08:07 2000 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,409 +0,0 @@
-/* $NetBSD: dma.c,v 1.9 1997/08/27 11:24:09 bouyer Exp $ */
-
-/*
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * from: @(#)rz.c 8.1 (Berkeley) 7/29/93
- */
-
-/*
- * PICA system dma driver. Handles resource allocation and
- * logical (viritual) address remaping.
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/errno.h>
-#include <sys/malloc.h>
-#include <sys/proc.h>
-#include <sys/syslog.h>
-#include <sys/device.h>
-
-#include <vm/vm.h>
-#include <vm/vm_kern.h>
-#include <vm/vm_page.h>
-
-#include <machine/cpu.h>
-#include <machine/autoconf.h>
-#include <machine/bus.h>
-#include <machine/pte.h>
-#include <machine/pio.h>
-
-#include <dev/scsipi/scsi_all.h>
-#include <dev/scsipi/scsipi_all.h>
-#include <dev/scsipi/scsiconf.h>
-
-#include <pica/pica/pica.h>
-#include <pica/dev/dma.h>
-
-
-extern vm_map_t phys_map;
-
-#define dma_pte_to_pa(x) (((x) - first_dma_pte) * PICA_DMA_PAGE_SIZE)
-
-dma_pte_t *free_dma_pte; /* Pointer to free dma pte list */
-dma_pte_t *first_dma_pte; /* Pointer to first dma pte */
-
-/*
- * Initialize the dma mapping register area and pool.
- */
-void
-picaDmaInit()
-{
- int map = PICA_TL_BASE;
-
- MachFlushCache(); /* Make shure no map entries are cached */
-
- bzero((char *)map, PICA_TL_SIZE);
- free_dma_pte = (dma_pte_t *)map;
- first_dma_pte = (dma_pte_t *)map;
- free_dma_pte->queue.next = NULL;
- free_dma_pte->queue.size = PICA_TL_SIZE / sizeof(dma_pte_t);
-
- out32(PICA_SYS_TL_BASE, MIPS_KSEG1_TO_PHYS(map));
- out32(PICA_SYS_TL_LIMIT, PICA_TL_SIZE);
- out32(PICA_SYS_TL_IVALID, 0);
-}
-
-/*
- * Allocate an array of 'size' dma pte entrys.
- * Return address to first pte.
- */
-void
-picaDmaTLBAlloc(dma_softc_t *dma)
-{
- dma_pte_t *list;
- dma_pte_t *found;
- int size;
- int s;
-
- found = NULL;
- size = dma->pte_size;
- do {
- list = (dma_pte_t *)&free_dma_pte;
- s = splhigh();
- while(list) {
- if(list->queue.next->queue.size >= size) {
- found = list->queue.next;
- break;
- }
- }
-/*XXX Wait for release wakeup */
- } while(found == NULL);
- if(found->queue.size == size) {
- list->queue.next = found->queue.next;
- }
- else {
- list->queue.next = found + size;
- list = found + size;
- list->queue.next = found->queue.next;
- list->queue.size = found->queue.size - size;
- }
- splx(s);
- dma->pte_base = found;
- dma->dma_va = dma_pte_to_pa(found);
-}
-
-/*
- * Free an array of dma pte entrys.
- */
-void
-picaDmaTLBFree(dma_softc_t *dma)
-{
- dma_pte_t *list;
- dma_pte_t *entry;
- int size;
- int s;
-
- s = splhigh();
- entry = dma->pte_base;
- size = dma->pte_size;
- entry->queue.next = NULL;
- entry->queue.size = size;
- if(free_dma_pte == NULL || entry < free_dma_pte) {
- list = entry;
- list->queue.next = free_dma_pte;
- free_dma_pte = entry;
- }
- else {
- list = free_dma_pte;
- while(list < entry && list->queue.next != NULL) {
- if(list + list->queue.size == entry) {
- list->queue.size += size;
- break;
- }
- else if(list->queue.next == NULL) {
- list->queue.next = entry;
- break;
- }
- else
- list = list->queue.next;
- }
- }
- if(list->queue.next != NULL) {
- if(list + list->queue.size == list->queue.next) {
- list->queue.size += list->queue.next->queue.size;
- list->queue.next = list->queue.next->queue.next;
- }
- }
- splx(s);
-/*XXX Wakeup waiting */
-}
-
-/*
- * Map up a viritual address space in dma space given by
- * the dma control structure and invalidate dma TLB cache.
- */
-
-void
-picaDmaTLBMap(dma_softc_t *sc)
-{
- vm_offset_t pa;
- vm_offset_t va;
- dma_pte_t *dma_pte;
- int nbytes;
-
- va = sc->next_va - sc->dma_va;
- dma_pte = sc->pte_base + (va / PICA_DMA_PAGE_SIZE);
- nbytes = dma_page_round(sc->next_size + dma_page_offs(va));
- va = sc->req_va;
- while(nbytes > 0) {
- if(va < VM_MIN_KERNEL_ADDRESS) {
- pa = MIPS_KSEG0_TO_PHYS(va);
- }
- else {
- pa = pmap_extract(vm_map_pmap(phys_map), va);
- }
- pa &= PICA_DMA_PAGE_NUM;
- if(pa == 0)
- panic("picaDmaTLBMap: null page frame");
- dma_pte->entry.lo_addr = pa;
- dma_pte->entry.hi_addr = 0;
- dma_pte++;
- va += PICA_DMA_PAGE_SIZE;
- nbytes -= PICA_DMA_PAGE_SIZE;
- }
-}
-
-/*
- * Start local dma channel.
- */
-void
-picaDmaStart(sc, addr, size, datain)
- struct dma_softc *sc;
- char *addr;
- size_t size;
- int datain;
-{
- pDmaReg regs = sc->dma_reg;
-
- /* Halt DMA */
- regs->dma_enab = 0;
- regs->dma_mode = 0;
-
- /* Remap request space va into dma space va */
-
- sc->req_va = (int)addr;
- sc->next_va = sc->dma_va + dma_page_offs(addr);
- sc->next_size = size;
-
- /* Map up the request viritual dma space */
- picaDmaTLBMap(sc);
- out32(PICA_SYS_TL_IVALID, 0); /* Flush dma map cache */
-
- /* Load new transfer parameters */
- regs->dma_addr = sc->next_va;
- regs->dma_count = sc->next_size;
- regs->dma_mode = sc->mode & PICA_DMA_MODE;
-
- sc->sc_active = 1;
- if(datain == DMA_FROM_DEV) {
- sc->mode &= ~DMA_DIR_WRITE;
- regs->dma_enab = PICA_DMA_ENAB_RUN | PICA_DMA_ENAB_READ;
- }
- else {
- sc->mode |= DMA_DIR_WRITE;
- regs->dma_enab = PICA_DMA_ENAB_RUN | PICA_DMA_ENAB_WRITE;
- }
- wbflush();
-}
-
-/*
- * Set up DMA mapper for external dma.
- * Used by ISA dma and SONIC
- */
-void
-picaDmaMap(sc, addr, size, offset)
- struct dma_softc *sc;
- char *addr;
- size_t size;
- int offset;
-{
- /* Remap request space va into dma space va */
-
- sc->req_va = (int)addr;
- sc->next_va = sc->dma_va + dma_page_offs(addr) + offset;
- sc->next_size = size;
-
- /* Map up the request viritual dma space */
- picaDmaTLBMap(sc);
-}
-
-/*
- * Prepare for new dma by flushing
- */
-void
-picaDmaFlush(sc, addr, size, datain)
- struct dma_softc *sc;
- char *addr;
- size_t size;
- int datain;
-{
- out32(PICA_SYS_TL_IVALID, 0); /* Flush dma map cache */
-}
-
-/*
- * Stop/Reset a DMA channel
- */
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