/* $NetBSD: sio16.c,v 1.15 2005/12/11 12:23:44 christos Exp $ */ /* * Copyright (c) 1998, 2001 Matthew R. Green * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * aurora technologies nova16 driver. this board is an sbus card with * an external 16 port serial box. there are two cirrus logic cd180 * 8 port serial chips used in the implementation. * * thanks go to Oliver Aldulea for writing the * linux driver of this that helped clear up a couple of issues. */ #include __KERNEL_RCSID(0, "$NetBSD: sio16.c,v 1.15 2005/12/11 12:23:44 christos Exp $"); #include #include #include #include #include #include #include #include "ioconf.h" #include "locators.h" /* 1600se configuration register bits */ #define SIO16_CONFIGREG_ENABLE_IO 8 #define SIO16_CONFIGREG_ENABLE_IRQ 4 /* 1600se interrupt ackknowledge register bytes */ #define SIO16_MINT_ACK 1 /* modem interrupt acknowledge */ #define SIO16_TINT_ACK 2 /* tx interrupt acknowledge */ #define SIO16_RINT_ACK 3 /* rx interrupt acknowledge */ /* * device cfattach and cfdriver definitions, plus the routine we pass * to the cd18xx code or interrupt acknowledgement. */ static int sio16_match(struct device *, struct cfdata *, void *); static void sio16_attach(struct device *, struct device *, void *); static u_char sio16_ackfunc(void *, int who); /* * define the sio16 per-device softc. */ struct sio16_softc { struct device sc_dev; /* must be first */ struct sbusdev sc_sd; /* for sbus drivers */ /* sbus information */ bus_space_tag_t sc_tag; /* bus tag for below */ bus_space_handle_t sc_configreg; /* configuration register */ bus_space_handle_t sc_reg[2]; /* cd180 register sets */ bus_space_handle_t sc_ack; /* interrupt acknowledgement */ #define SIO16_1600SE 0x00000001 u_int sc_clk; /* cd180 information */ int sc_ncd180; }; CFATTACH_DECL(siosixteen, sizeof(struct sio16_softc), sio16_match, sio16_attach, NULL, NULL); struct sio16_attach_args { bus_space_tag_t cd_tag; bus_space_handle_t cd_handle; u_char (*cd_ackfunc)(void *, int); void *cd_ackfunc_arg; u_int cd_osc; }; /* * device match routine: is there an sio16 present? * * note that we can not put "sio16" in the cfdriver, as this is an * illegal name, so we have to hard code it here. */ #define SIO16_ROM_NAME "sio16" int sio16_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct sbus_attach_args *sa = aux; /* does the prom think i'm an sio16? */ if (strcmp(SIO16_ROM_NAME, sa->sa_name) != 0) return (0); return (1); } /* * device attach routine: go attach all sub devices. */ void sio16_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct sbus_attach_args *sa = aux; struct sio16_softc *sc = (struct sio16_softc *)self; bus_space_handle_t h; char *mode, *model; int i; if (sa->sa_nreg != 4) panic("sio16_attach: got %d registers intead of 4", sa->sa_nreg); /* copy our bus tag, we will need it */ sc->sc_tag = sa->sa_bustag; /* * sio16 has 4 register mappings. a single byte configuration * register, 2 128 byte regions for the cd180 registers, and * a 4 byte region for interrupt acknowledgement. */ if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].oa_space, sa->sa_reg[0].oa_base, sa->sa_reg[0].oa_size, 0, &h) != 0) { printf("%s at sbus: can not map registers 0\n", self->dv_xname); return; } sc->sc_configreg = h; if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[1].sbr_slot, sa->sa_reg[1].sbr_offset, sa->sa_reg[1].sbr_size, 0, &h) != 0) { printf("%s at sbus: can not map registers 1\n", self->dv_xname); return; } sc->sc_reg[0] = h; if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[2].sbr_slot, sa->sa_reg[2].sbr_offset, sa->sa_reg[2].sbr_size, 0, &h) != 0) { printf("%s at sbus: can not map registers 2\n", self->dv_xname); return; } sc->sc_reg[1] = h; if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[3].sbr_slot, sa->sa_reg[3].sbr_offset, sa->sa_reg[3].sbr_size, 0, &h) != 0) { printf("%s at sbus: can not map registers 3\n", self->dv_xname); return; } sc->sc_ack = h; mode = prom_getpropstring(sa->sa_node, "mode"); if (mode) printf(", %s mode", mode); /* get the clock frequency */ sc->sc_clk = prom_getpropint(sa->sa_node, "clk", 24000); model = prom_getpropstring(sa->sa_node, "model"); if (model == 0) { printf(", no model property, bailing\n"); return; } /* are we an 1600se? */ if (strcmp(model, "1600se") == 0) { printf(", 16 channels"); sc->sc_ncd180 = 2; } else { printf(", don't know model %s, bailing\n", model); return; } /* set up our sbus connections */ sbus_establish(&sc->sc_sd, &sc->sc_dev); /* establish interrupt channel */ (void)bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_TTY, cd18xx_hardintr, sc); /* reset the board, and turn on interrupts and I/O */ bus_space_write_1(sa->sa_bustag, sc->sc_configreg, 0, 0); delay(100); bus_space_write_1(sa->sa_bustag, sc->sc_configreg, 0, SIO16_CONFIGREG_ENABLE_IO | SIO16_CONFIGREG_ENABLE_IRQ | (((sa->sa_pri) & 0x0f) >> 2)); delay(10000); printf("\n"); /* finally, configure the clcd's underneath */ for (i = 0; i < sc->sc_ncd180; i++) { struct sio16_attach_args cd; cd.cd_tag = sa->sa_bustag; cd.cd_osc = sc->sc_clk * 100; cd.cd_handle = (bus_space_handle_t)sc->sc_reg[i]; cd.cd_ackfunc = sio16_ackfunc; cd.cd_ackfunc_arg = sc; (void)config_found(self, (void *)&cd, NULL); } } /* * note that the addresses used in this function match those assigned * in clcd_attach() below, or the various service match routines. */ u_char sio16_ackfunc(v, who) void *v; int who; { struct sio16_softc *sc = v; bus_size_t addr; switch (who) { case CD18xx_INTRACK_RxINT: case CD18xx_INTRACK_REINT: addr = SIO16_RINT_ACK; break; case CD18xx_INTRACK_TxINT: addr = SIO16_TINT_ACK; break; case CD18xx_INTRACK_MxINT: addr = SIO16_MINT_ACK; break; default: panic("%s: sio16_ackfunc: unknown ackfunc %d", sc->sc_dev.dv_xname, who); } return (bus_space_read_1(sc->sc_tag, sc->sc_ack, addr)); } /* * we attach two `clcd' instances per 1600se, that each call the * backend cd18xx driver for help. */ static int clcd_match(struct device *, struct cfdata *, void *); static void clcd_attach(struct device *, struct device *, void *); CFATTACH_DECL(clcd, sizeof(struct cd18xx_softc), clcd_match, clcd_attach, NULL, NULL); static int clcd_match(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { /* XXX */ return 1; } static void clcd_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct cd18xx_softc *sc = (struct cd18xx_softc *)self; struct sio16_attach_args *args = aux; sc->sc_tag = args->cd_tag; sc->sc_handle = args->cd_handle; sc->sc_osc = args->cd_osc; sc->sc_ackfunc = args->cd_ackfunc; sc->sc_ackfunc_arg = args->cd_ackfunc_arg; sc->sc_msmr = SIO16_MINT_ACK; sc->sc_tsmr = SIO16_TINT_ACK; sc->sc_rsmr = SIO16_RINT_ACK; /* call the common code */ cd18xx_attach(sc); }