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139 lines
4.0 KiB
C
139 lines
4.0 KiB
C
/* $Id: exb.c,v 1.3 2011/06/17 19:03:02 matt Exp $ */
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/*-
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* Copyright (c) 2010 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software developed for The NetBSD Foundation
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* by Masao Uebayashi.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
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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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: exb.c,v 1.3 2011/06/17 19:03:02 matt Exp $");
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#include "locators.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/extent.h>
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#include <sys/bus.h>
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#include <powerpc/ibm4xx/dcr4xx.h>
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#include <powerpc/ibm4xx/dev/exbvar.h>
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struct exb_softc {
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};
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extern const struct exb_conf exb_confs[];
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static int exb_match(device_t, cfdata_t, void *);
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static void exb_attach(device_t, device_t, void *);
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static int exb_print(void *, const char *);
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CFATTACH_DECL_NEW(exb, sizeof(struct exb_softc), exb_match, exb_attach,
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NULL, NULL);
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static struct powerpc_bus_space exb_bus_space_tag =
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{ _BUS_SPACE_BIG_ENDIAN | _BUS_SPACE_MEM_TYPE, 0 };
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static int
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exb_match(device_t parent, cfdata_t cf, void *aux)
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{
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return 1;
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}
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static void
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exb_attach(device_t parent, device_t self, void *aux)
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{
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const struct exb_conf *ec = exb_confs;
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uint32_t ebc0_bNcr;
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bus_addr_t base, size;
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int locs[EXBCF_NLOCS];
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printf("\n");
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/* mtdcr needs a constant */
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switch (device_unit(self)) {
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case 0: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B0CR); break;
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case 1: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B1CR); break;
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case 2: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B2CR); break;
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case 3: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B3CR); break;
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case 4: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B4CR); break;
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case 5: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B5CR); break;
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case 6: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B6CR); break;
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case 7: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B7CR); break;
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}
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ebc0_bNcr = mfdcr(DCR_EBC0_CFGDATA);
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base = ebc0_bNcr & 0xfff00000;
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size = 0x00100000 << ((ebc0_bNcr & 0x000e0000) >> 17);
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exb_bus_space_tag.pbs_base = base;
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exb_bus_space_tag.pbs_limit = base + size - 1;
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while (ec->ec_name) {
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struct exb_conf ec1;
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locs[EXBCF_ADDR] = ec->ec_addr;
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ec1 = *ec;
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ec1.ec_bust = exb_get_bus_space_tag();
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config_found_sm_loc(self, "exb", locs, &ec1, exb_print,
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config_stdsubmatch);
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ec++;
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}
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}
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static int
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exb_print(void *aux, const char *bus)
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{
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struct exb_conf *ec = aux;
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if (bus)
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return QUIET;
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if (ec->ec_addr)
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printf(" addr %"PRIxBUSADDR, ec->ec_addr);
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return UNCONF;
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}
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bus_space_tag_t
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exb_get_bus_space_tag(void)
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{
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static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)]
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__attribute__((aligned(8)));
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static int exb_bus_space_tag_inited;
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if (exb_bus_space_tag_inited == 0) {
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if (bus_space_init(&exb_bus_space_tag, "exbtag",
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ex_storage, sizeof(ex_storage)))
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panic("exb_attach: Failed to initialise exb_bus_space_tag");
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exb_bus_space_tag_inited = 1;
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}
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return &exb_bus_space_tag;
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}
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