310 lines
6.9 KiB
C
310 lines
6.9 KiB
C
/* $NetBSD: i80321_space.c,v 1.6 2003/10/06 15:43:35 thorpej Exp $ */
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/*-
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* Copyright (c) 2001, 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* bus_space functions for i80321 I/O Processor.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <machine/pcb.h>
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#include <vm/vm.h>
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#include <vm/vm_kern.h>
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#include <vm/pmap.h>
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#include <vm/vm_page.h>
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#include <vm/vm_extern.h>
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#include <machine/bus.h>
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#include <arm/xscale/i80321/i80321reg.h>
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#include <arm/xscale/i80321/i80321var.h>
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/* Prototypes for all the bus_space structure functions */
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bs_protos(i80321);
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bs_protos(i80321_io);
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bs_protos(i80321_mem);
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bs_protos(generic);
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bs_protos(generic_armv4);
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bs_protos(bs_notimpl);
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/*
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* Template bus_space -- copied, and the bits that are NULL are
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* filled in.
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*/
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const struct bus_space i80321_bs_tag_template = {
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/* cookie */
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(void *) 0,
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/* mapping/unmapping */
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NULL,
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NULL,
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i80321_bs_subregion,
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/* allocation/deallocation */
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NULL,
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NULL,
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/* barrier */
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i80321_bs_barrier,
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/* read (single) */
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generic_bs_r_1,
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generic_armv4_bs_r_2,
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generic_bs_r_4,
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NULL,
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/* read multiple */
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generic_bs_rm_1,
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generic_armv4_bs_rm_2,
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generic_bs_rm_4,
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NULL,
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/* read region */
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NULL,
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generic_armv4_bs_rr_2,
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generic_bs_rr_4,
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NULL,
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/* write (single) */
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generic_bs_w_1,
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generic_armv4_bs_w_2,
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generic_bs_w_4,
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NULL,
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/* write multiple */
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generic_bs_wm_1,
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generic_armv4_bs_wm_2,
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generic_bs_wm_4,
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NULL,
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/* write region */
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NULL,
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generic_armv4_bs_wr_2,
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generic_bs_wr_4,
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NULL,
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/* set multiple */
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NULL,
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NULL,
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NULL,
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NULL,
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/* set region */
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NULL,
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generic_armv4_bs_sr_2,
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generic_bs_sr_4,
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NULL,
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/* copy */
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NULL,
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generic_armv4_bs_c_2,
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NULL,
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NULL,
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};
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void
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i80321_bs_init(bus_space_tag_t bs, void *cookie)
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{
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*bs = i80321_bs_tag_template;
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bs->bs_cookie = cookie;
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}
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void
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i80321_io_bs_init(bus_space_tag_t bs, void *cookie)
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{
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*bs = i80321_bs_tag_template;
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bs->bs_cookie = cookie;
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bs->bs_map = i80321_io_bs_map;
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bs->bs_unmap = i80321_io_bs_unmap;
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bs->bs_alloc = i80321_io_bs_alloc;
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bs->bs_free = i80321_io_bs_free;
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}
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void
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i80321_mem_bs_init(bus_space_tag_t bs, void *cookie)
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{
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*bs = i80321_bs_tag_template;
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bs->bs_cookie = cookie;
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bs->bs_map = i80321_mem_bs_map;
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bs->bs_unmap = i80321_mem_bs_unmap;
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bs->bs_alloc = i80321_mem_bs_alloc;
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bs->bs_free = i80321_mem_bs_free;
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}
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/* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */
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int
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i80321_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
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bus_size_t size, bus_space_handle_t *nbshp)
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{
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*nbshp = bsh + offset;
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return (0);
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}
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void
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i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
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bus_size_t len, int flags)
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{
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/* Nothing to do. */
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}
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/* *** Routines for PCI IO. *** */
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extern struct i80321_softc *i80321_softc;
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int
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i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
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bus_space_handle_t *bshp)
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{
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struct i80321_softc *sc = i80321_softc;
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vm_offset_t winvaddr;
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uint32_t busbase;
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if (bpa >= sc->sc_ioout_xlate &&
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bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) {
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busbase = sc->sc_ioout_xlate;
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winvaddr = sc->sc_iow_vaddr;
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} else
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return (EINVAL);
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if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE))
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return (EINVAL);
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/*
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* Found the window -- PCI I/O space is mapped at a fixed
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* virtual address by board-specific code. Translate the
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* bus address to the virtual address.
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*/
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*bshp = winvaddr + (bpa - busbase);
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return (0);
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}
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void
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i80321_io_bs_unmap(void *t, bus_size_t size)
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{
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/* Nothing to do. */
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}
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int
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i80321_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
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bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
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bus_addr_t *bpap, bus_space_handle_t *bshp)
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{
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panic("i80321_io_bs_alloc(): not implemented");
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}
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void
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i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
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{
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panic("i80321_io_bs_free(): not implemented");
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}
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/* *** Routines for PCI MEM. *** */
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extern int badaddr_read(void *, int, void *);
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int
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i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
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bus_space_handle_t *bshp)
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{
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vm_offset_t va;
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uint32_t busbase;
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vm_paddr_t pa, endpa, physbase;
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/*
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* Found the window -- PCI MEM space is not mapped by allocating
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* some kernel VA space and mapping the pages with pmap_enter().
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* pmap_enter() will map unmanaged pages as non-cacheable.
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*/
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pa = trunc_page((bpa - busbase) + physbase);
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endpa = round_page(((bpa - busbase) + physbase) + size);
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pa = trunc_page(bpa);
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endpa = round_page(bpa + size);
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*bshp = va + (bpa & PAGE_MASK);
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*bshp = pa;
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*bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa);
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return (0);
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}
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void
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i80321_mem_bs_unmap(void *t, bus_size_t size)
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{
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vm_offset_t va, endva;
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va = trunc_page((vm_offset_t)t);
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endva = va + round_page(size);
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/* Free the kernel virtual mapping. */
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kmem_free(kernel_map, va, endva - va);
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}
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int
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i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
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bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
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bus_addr_t *bpap, bus_space_handle_t *bshp)
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{
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panic("i80321_mem_bs_alloc(): not implemented");
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}
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void
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i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
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{
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panic("i80321_mem_bs_free(): not implemented");
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}
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