221 lines
6.1 KiB
C
221 lines
6.1 KiB
C
/* $NetBSD: pq3duart.c,v 1.3 2011/08/01 17:05:17 matt Exp $ */
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/*-
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* Copyright (c) 2010, 2011 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 contributed to The NetBSD Foundation
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* by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
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* Agency and which was developed by Matt Thomas of 3am Software Foundry.
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*
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* This material is based upon work supported by the Defense Advanced Research
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* Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
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* Contract No. N66001-09-C-2073.
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* Approved for Public Release, Distribution Unlimited
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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: pq3duart.c,v 1.3 2011/08/01 17:05:17 matt Exp $");
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#include <sys/param.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <sys/tty.h>
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#include "ioconf.h"
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#include <sys/intr.h>
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#include <sys/bus.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#include <powerpc/booke/cpuvar.h>
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#include <powerpc/booke/e500var.h>
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#include <powerpc/booke/e500reg.h>
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struct pq3duart_softc {
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device_t dsc_dev;
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struct com_softc *dsc_sc[2];
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bus_space_tag_t dsc_memt;
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bus_addr_t dsc_base;
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void *dsc_ih;
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};
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struct pq3duart_attach_args {
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const char *da_busname;
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bus_space_tag_t da_memt;
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bus_addr_t da_addr;
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bus_addr_t da_size;
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u_int da_port;
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};
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static int pq3duart_match(device_t, cfdata_t, void *);
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static void pq3duart_attach(device_t, device_t, void *);
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static int com_pq3duart_match(device_t, cfdata_t, void *);
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static void com_pq3duart_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(pq3duart, sizeof(struct pq3duart_softc),
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pq3duart_match, pq3duart_attach, NULL, NULL);
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CFATTACH_DECL_NEW(com_pq3duart, sizeof(struct com_softc),
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com_pq3duart_match, com_pq3duart_attach, NULL, NULL);
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static int
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pq3duart_match(device_t parent, cfdata_t cf, void *aux)
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{
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if (!e500_cpunode_submatch(parent, cf, cf->cf_name, aux))
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return 0;
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return 1;
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}
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static int
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com_pq3duart_match(device_t parent, cfdata_t cfdata, void *aux)
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{
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struct pq3duart_softc * const dsc = device_private(parent);
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struct pq3duart_attach_args * const da = aux;
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struct com_regs regs;
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if ((da->da_port != 1 && da->da_port != 2)
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|| dsc->dsc_sc[da->da_port-1] != NULL)
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return 0;
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bus_space_tag_t memt = da->da_memt;
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bus_addr_t addr = da->da_addr;
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bus_addr_t size = da->da_size;
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bus_space_handle_t memh;
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if (com_is_console(memt, addr, &memh))
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return 1;
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if (bus_space_map(memt, addr, size, 0, &memh))
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return 0;
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COM_INIT_REGS(regs, memt, memh, addr);
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int rv = com_probe_subr(®s);
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bus_space_unmap(memt, memh, size);
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return rv;
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}
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static int
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pq3duart_intr(void *arg)
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{
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struct pq3duart_softc * const dsc = arg;
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int rv = 0;
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if (dsc->dsc_sc[0] != NULL)
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rv += comintr(dsc->dsc_sc[0]);
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if (dsc->dsc_sc[1] != NULL)
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rv += comintr(dsc->dsc_sc[1]);
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return rv;
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}
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static int
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pq3duart_print(void *aux, const char *pnp)
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{
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struct pq3duart_attach_args * const da = aux;
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if (pnp != NULL)
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return QUIET;
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aprint_normal(" port %d", da->da_port);
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return UNCONF;
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}
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static void
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pq3duart_attach(device_t parent, device_t self, void *aux)
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{
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struct cpunode_softc * const psc = device_private(parent);
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struct pq3duart_softc * const dsc = device_private(self);
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struct cpunode_attach_args * const cna = aux;
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struct cpunode_locators * const cnl = &cna->cna_locs;
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struct pq3duart_attach_args da;
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u_int nports = cnl->cnl_size / DUART_SIZE;
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psc->sc_children |= cna->cna_childmask;
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dsc->dsc_dev = self;
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aprint_normal(": %u ports\n", nports);
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for (u_int port = 1; port <= min(2, nports); port++) {
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da.da_memt = cna->cna_memt;
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da.da_port = port;
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da.da_addr = cnl->cnl_addr + (port - 1) * DUART_SIZE;
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da.da_size = COM_NPORTS;
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(void)config_found_sm_loc(self, "duart", NULL,
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&da, pq3duart_print, NULL);
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}
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if (dsc->dsc_sc[0] != NULL || dsc->dsc_sc[1] != NULL) {
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dsc->dsc_ih = intr_establish(cnl->cnl_intrs[0], IPL_SERIAL,
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IST_ONCHIP, pq3duart_intr, dsc);
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if (dsc->dsc_ih == NULL)
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aprint_error_dev(self,
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"failed to establish interrupt %d\n",
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cnl->cnl_intrs[0]);
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else
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aprint_normal_dev(self,
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"interrupting on irq %d\n",
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cnl->cnl_intrs[0]);
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}
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}
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static void
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com_pq3duart_attach(device_t parent, device_t self, void *aux)
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{
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struct pq3duart_softc * const dsc = device_private(parent);
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struct com_softc * const sc = device_private(self);
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struct pq3duart_attach_args * const da = aux;
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dsc->dsc_sc[da->da_port-1] = sc;
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sc->sc_dev = self;
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sc->sc_frequency = (int) board_info_get_number("bus-frequency");
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bus_space_tag_t memt = da->da_memt;
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bus_addr_t addr = da->da_addr;
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bus_addr_t size = da->da_size;
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bus_space_handle_t memh;
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if (!com_is_console(memt, addr, &memh)) {
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int error = bus_space_map(memt, addr, size, 0, &memh);
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if (error) {
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aprint_error(": failed to map registers: %d\n", error);
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return;
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}
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}
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COM_INIT_REGS(sc->sc_regs, memt, memh, addr);
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sc->sc_regs.cr_nports = size;
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com_attach_subr(sc);
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}
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