1e1ef7811SRafal Jaworowski /*- 2e1ef7811SRafal Jaworowski * Copyright (c) 2004-2006 Marcel Moolenaar 3e1ef7811SRafal Jaworowski * All rights reserved. 4e1ef7811SRafal Jaworowski * 5e1ef7811SRafal Jaworowski * Redistribution and use in source and binary forms, with or without 6e1ef7811SRafal Jaworowski * modification, are permitted provided that the following conditions 7e1ef7811SRafal Jaworowski * are met: 8e1ef7811SRafal Jaworowski * 9e1ef7811SRafal Jaworowski * 1. Redistributions of source code must retain the above copyright 10e1ef7811SRafal Jaworowski * notice, this list of conditions and the following disclaimer. 11e1ef7811SRafal Jaworowski * 2. Redistributions in binary form must reproduce the above copyright 12e1ef7811SRafal Jaworowski * notice, this list of conditions and the following disclaimer in the 13e1ef7811SRafal Jaworowski * documentation and/or other materials provided with the distribution. 14e1ef7811SRafal Jaworowski * 15e1ef7811SRafal Jaworowski * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16e1ef7811SRafal Jaworowski * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17e1ef7811SRafal Jaworowski * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18e1ef7811SRafal Jaworowski * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19e1ef7811SRafal Jaworowski * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20e1ef7811SRafal Jaworowski * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21e1ef7811SRafal Jaworowski * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22e1ef7811SRafal Jaworowski * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23e1ef7811SRafal Jaworowski * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24e1ef7811SRafal Jaworowski * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25e1ef7811SRafal Jaworowski */ 26e1ef7811SRafal Jaworowski 27e1ef7811SRafal Jaworowski #include <sys/cdefs.h> 28e1ef7811SRafal Jaworowski __FBSDID("$FreeBSD$"); 29e1ef7811SRafal Jaworowski 30e1ef7811SRafal Jaworowski #include <sys/param.h> 31e1ef7811SRafal Jaworowski #include <sys/systm.h> 32e1ef7811SRafal Jaworowski #include <sys/bus.h> 33e1ef7811SRafal Jaworowski #include <sys/conf.h> 34e1ef7811SRafal Jaworowski #include <machine/bus.h> 35e1ef7811SRafal Jaworowski #include <sys/rman.h> 36e1ef7811SRafal Jaworowski #include <sys/serial.h> 37e1ef7811SRafal Jaworowski 38e1ef7811SRafal Jaworowski #include <dev/scc/scc_bfe.h> 39e1ef7811SRafal Jaworowski #include <dev/scc/scc_bus.h> 40e1ef7811SRafal Jaworowski 41e1ef7811SRafal Jaworowski #include <dev/ic/quicc.h> 42e1ef7811SRafal Jaworowski 43e1ef7811SRafal Jaworowski #include "scc_if.h" 44e1ef7811SRafal Jaworowski 45e1ef7811SRafal Jaworowski #define quicc_read2(bas, reg) \ 46e1ef7811SRafal Jaworowski bus_space_read_2((bas)->bst, (bas)->bsh, reg) 47e1ef7811SRafal Jaworowski 48e1ef7811SRafal Jaworowski #define quicc_write2(bas, reg, val) \ 49e1ef7811SRafal Jaworowski bus_space_write_2((bas)->bst, (bas)->bsh, reg, val) 50e1ef7811SRafal Jaworowski 51e1ef7811SRafal Jaworowski static int quicc_bfe_attach(struct scc_softc *, int); 52e1ef7811SRafal Jaworowski static int quicc_bfe_enabled(struct scc_softc *, struct scc_chan *); 53e1ef7811SRafal Jaworowski static int quicc_bfe_iclear(struct scc_softc *, struct scc_chan *); 54e1ef7811SRafal Jaworowski static int quicc_bfe_ipend(struct scc_softc *); 55e1ef7811SRafal Jaworowski static int quicc_bfe_probe(struct scc_softc *); 56e1ef7811SRafal Jaworowski 57e1ef7811SRafal Jaworowski static kobj_method_t quicc_methods[] = { 58e1ef7811SRafal Jaworowski KOBJMETHOD(scc_attach, quicc_bfe_attach), 59e1ef7811SRafal Jaworowski KOBJMETHOD(scc_enabled, quicc_bfe_enabled), 60e1ef7811SRafal Jaworowski KOBJMETHOD(scc_iclear, quicc_bfe_iclear), 61e1ef7811SRafal Jaworowski KOBJMETHOD(scc_ipend, quicc_bfe_ipend), 62e1ef7811SRafal Jaworowski KOBJMETHOD(scc_probe, quicc_bfe_probe), 63*c4b1deafSMarius Strobl KOBJMETHOD_END 64e1ef7811SRafal Jaworowski }; 65e1ef7811SRafal Jaworowski 66e1ef7811SRafal Jaworowski struct scc_class scc_quicc_class = { 67e1ef7811SRafal Jaworowski "QUICC class", 68e1ef7811SRafal Jaworowski quicc_methods, 69e1ef7811SRafal Jaworowski sizeof(struct scc_softc), 70e1ef7811SRafal Jaworowski .cl_channels = 4, 71e1ef7811SRafal Jaworowski .cl_class = SCC_CLASS_QUICC, 72e1ef7811SRafal Jaworowski .cl_modes = SCC_MODE_ASYNC | SCC_MODE_BISYNC | SCC_MODE_HDLC, 73e1ef7811SRafal Jaworowski .cl_range = 0, 74e1ef7811SRafal Jaworowski }; 75e1ef7811SRafal Jaworowski 76e1ef7811SRafal Jaworowski static int 77*c4b1deafSMarius Strobl quicc_bfe_attach(struct scc_softc *sc __unused, int reset __unused) 78e1ef7811SRafal Jaworowski { 79e1ef7811SRafal Jaworowski 80e1ef7811SRafal Jaworowski return (0); 81e1ef7811SRafal Jaworowski } 82e1ef7811SRafal Jaworowski 83e1ef7811SRafal Jaworowski static int 84e1ef7811SRafal Jaworowski quicc_bfe_enabled(struct scc_softc *sc, struct scc_chan *ch) 85e1ef7811SRafal Jaworowski { 86e1ef7811SRafal Jaworowski struct scc_bas *bas; 87e1ef7811SRafal Jaworowski int unit; 88e1ef7811SRafal Jaworowski uint16_t val0, val1; 89e1ef7811SRafal Jaworowski 90e1ef7811SRafal Jaworowski bas = &sc->sc_bas; 91e1ef7811SRafal Jaworowski unit = ch->ch_nr - 1; 92e1ef7811SRafal Jaworowski val0 = quicc_read2(bas, QUICC_REG_SCC_TODR(unit)); 93e1ef7811SRafal Jaworowski quicc_write2(bas, QUICC_REG_SCC_TODR(unit), ~val0); 94e1ef7811SRafal Jaworowski val1 = quicc_read2(bas, QUICC_REG_SCC_TODR(unit)); 95e1ef7811SRafal Jaworowski quicc_write2(bas, QUICC_REG_SCC_TODR(unit), val0); 96e1ef7811SRafal Jaworowski return (((val0 | val1) == 0x8000) ? 1 : 0); 97e1ef7811SRafal Jaworowski } 98e1ef7811SRafal Jaworowski 99e1ef7811SRafal Jaworowski static int 100e1ef7811SRafal Jaworowski quicc_bfe_iclear(struct scc_softc *sc, struct scc_chan *ch) 101e1ef7811SRafal Jaworowski { 102*c4b1deafSMarius Strobl struct scc_bas *bas; 103*c4b1deafSMarius Strobl uint16_t rb, st; 104e1ef7811SRafal Jaworowski 105*c4b1deafSMarius Strobl bas = &sc->sc_bas; 106*c4b1deafSMarius Strobl mtx_lock_spin(&sc->sc_hwmtx); 107*c4b1deafSMarius Strobl if (ch->ch_ipend & SER_INT_RXREADY) { 108*c4b1deafSMarius Strobl rb = quicc_read2(bas, QUICC_PRAM_SCC_RBASE(ch->ch_nr - 1)); 109*c4b1deafSMarius Strobl st = quicc_read2(bas, rb); 110*c4b1deafSMarius Strobl (void)quicc_read4(bas, rb + 4); 111*c4b1deafSMarius Strobl quicc_write2(bas, rb, st | 0x9000); 112*c4b1deafSMarius Strobl } 113*c4b1deafSMarius Strobl mtx_unlock_spin(&sc->sc_hwmtx); 114e1ef7811SRafal Jaworowski return (0); 115e1ef7811SRafal Jaworowski } 116e1ef7811SRafal Jaworowski 117e1ef7811SRafal Jaworowski static int 118e1ef7811SRafal Jaworowski quicc_bfe_ipend(struct scc_softc *sc) 119e1ef7811SRafal Jaworowski { 120e1ef7811SRafal Jaworowski struct scc_bas *bas; 121e1ef7811SRafal Jaworowski struct scc_chan *ch; 122e1ef7811SRafal Jaworowski int c, ipend; 123e1ef7811SRafal Jaworowski uint16_t scce; 124e1ef7811SRafal Jaworowski 125e1ef7811SRafal Jaworowski bas = &sc->sc_bas; 126e1ef7811SRafal Jaworowski ipend = 0; 127e1ef7811SRafal Jaworowski for (c = 0; c < 4; c++) { 128e1ef7811SRafal Jaworowski ch = &sc->sc_chan[c]; 129e1ef7811SRafal Jaworowski if (!ch->ch_enabled) 130e1ef7811SRafal Jaworowski continue; 131e1ef7811SRafal Jaworowski ch->ch_ipend = 0; 132e1ef7811SRafal Jaworowski mtx_lock_spin(&sc->sc_hwmtx); 133e1ef7811SRafal Jaworowski scce = quicc_read2(bas, QUICC_REG_SCC_SCCE(c)); 134e1ef7811SRafal Jaworowski quicc_write2(bas, QUICC_REG_SCC_SCCE(c), ~0); 135e1ef7811SRafal Jaworowski mtx_unlock_spin(&sc->sc_hwmtx); 136e1ef7811SRafal Jaworowski if (scce & 0x0001) 137e1ef7811SRafal Jaworowski ch->ch_ipend |= SER_INT_RXREADY; 138e1ef7811SRafal Jaworowski if (scce & 0x0002) 139e1ef7811SRafal Jaworowski ch->ch_ipend |= SER_INT_TXIDLE; 140e1ef7811SRafal Jaworowski if (scce & 0x0004) 141e1ef7811SRafal Jaworowski ch->ch_ipend |= SER_INT_OVERRUN; 142e1ef7811SRafal Jaworowski if (scce & 0x0020) 143e1ef7811SRafal Jaworowski ch->ch_ipend |= SER_INT_BREAK; 144e1ef7811SRafal Jaworowski /* XXX SIGNALS */ 145e1ef7811SRafal Jaworowski ipend |= ch->ch_ipend; 146e1ef7811SRafal Jaworowski } 147e1ef7811SRafal Jaworowski return (ipend); 148e1ef7811SRafal Jaworowski } 149e1ef7811SRafal Jaworowski 150e1ef7811SRafal Jaworowski static int 151*c4b1deafSMarius Strobl quicc_bfe_probe(struct scc_softc *sc __unused) 152e1ef7811SRafal Jaworowski { 153e1ef7811SRafal Jaworowski 154e1ef7811SRafal Jaworowski return (0); 155e1ef7811SRafal Jaworowski } 156