99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/* $NetBSD: tsp_bus_mem.c,v 1.7 2003/07/14 23:25:40 lukem Exp $ */
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/*-
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* Copyright (c) 1999 by Ross Harvey. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Ross Harvey.
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* 4. The name of Ross Harvey may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE
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* ARE DISCLAIMED. IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: tsp_bus_mem.c,v 1.7 2003/07/14 23:25:40 lukem Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <uvm/uvm_extern.h>
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#include <machine/bus.h>
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#include <machine/autoconf.h>
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#include <machine/rpb.h>
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#include <alpha/pci/tsreg.h>
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#include <alpha/pci/tsvar.h>
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#define tsp_bus_mem() { Generate ctags(1) key. }
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#define CHIP tsp
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#define CHIP_EX_MALLOC_SAFE(v) (((struct tsp_config *)(v))->pc_mallocsafe)
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#define CHIP_MEM_EXTENT(v) (((struct tsp_config *)(v))->pc_mem_ex)
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#define CHIP_MEM_SYS_START(v) (((struct tsp_config *)(v))->pc_iobase)
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/*
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* Tsunami core logic appears on EV6. We require at least EV56
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* support for the assembler to emit BWX opcodes.
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*/
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__asm(".arch ev6");
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#include <alpha/pci/pci_bwx_bus_mem_chipdep.c>
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void
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tsp_bus_mem_init2(bus_space_tag_t t, void *v)
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{
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struct tsp_config *pcp = v;
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struct ts_pchip *pccsr = pcp->pc_csr;
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int i, error;
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/*
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* Allocate the DMA windows out of the extent map.
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*/
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for (i = 0; i < 4; i++) {
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alpha_mb();
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if ((pccsr->tsp_wsba[i].tsg_r & WSBA_ENA) == 0) {
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/* Window not in use. */
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continue;
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}
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error = extent_alloc_region(CHIP_MEM_EXTENT(v),
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WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r),
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WSM_LEN(pccsr->tsp_wsm[i].tsg_r),
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EX_NOWAIT | (CHIP_EX_MALLOC_SAFE(v) ? EX_MALLOCOK : 0));
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if (error) {
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printf("WARNING: unable to reserve DMA window "
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"0x%lx - 0x%lx\n",
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WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r),
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WSBA_ADDR(pccsr->tsp_wsba[i].tsg_r) +
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(WSM_LEN(pccsr->tsp_wsm[i].tsg_r) - 1));
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}
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}
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}
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