/* $NetBSD: upc.c,v 1.15 2012/10/27 17:18:23 chs Exp $ */ /*- * Copyright (c) 2000, 2003 Ben Harris * 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. */ /* * upc - driver for C&T Universal Peripheral Controllers * * Supports: * 82C710 Universal Peripheral Controller * 82C711 Universal Peripheral Controller II * 82C721 Universal Peripheral Controller III (untested) * * The 82C710 is substantially different from its successors. * Functions that just handle the 82C710 are named upc1_*, which those * that handle the 82C711 and 82C721 are named upc2_*. */ #include __KERNEL_RCSID(0, "$NetBSD: upc.c,v 1.15 2012/10/27 17:18:23 chs Exp $"); #include #include #include #include #include /* XXX needed by wdcvar.h */ #include #include #include #include #include #include #include #include "locators.h" /* Conventional port to use for 82C710 configuration */ #define UPC1_PORT_CRI 0x390 #define UPC1_PORT_CAP (UPC1_PORT_CRI + 1) static int upc1_probe(struct upc_softc *); static void upc1_attach(struct upc_softc *); static void upc2_attach(struct upc_softc *); static void upc_found(struct upc_softc *, char const *, int, int, struct upc_irqhandle *); static void upc_found2(struct upc_softc *, char const *, int, int, int, int, struct upc_irqhandle *); static int upc_print(void *, char const *); static int upc2_com3_addr(int); static int upc2_com4_addr(int); void upc_attach(struct upc_softc *sc) { if (upc1_probe(sc)) upc1_attach(sc); else upc2_attach(sc); } static int upc1_probe(struct upc_softc *sc) { return upc1_read_config(sc, UPC1_CFGADDR_CONFBASE) == UPC1_PORT_CRI >> UPC1_CONFBASE_SHIFT; } static void upc1_attach(struct upc_softc *sc) { u_int8_t cr[16]; int i; aprint_normal(": 82C710\n"); /* Dump configuration */ for (i = 0; i < 16; i++) cr[i] = upc1_read_config(sc, i); aprint_verbose_dev(sc->sc_dev, "config state"); for (i = 0; i < 16; i++) aprint_verbose(" %02x", cr[i]); aprint_verbose("\n"); /* FDC */ if (cr[UPC1_CFGADDR_CRC] & UPC1_CRC_FDCEN) upc_found(sc, "fdc", UPC_PORT_FDCBASE, 2, &sc->sc_fintr); /* IDE */ if (cr[UPC1_CFGADDR_CRC] & UPC1_CRC_IDEEN) upc_found2(sc, "wdc", UPC_PORT_IDECMDBASE, 8, UPC_PORT_IDECTLBASE, 2, &sc->sc_wintr); /* Parallel */ if (cr[UPC1_CFGADDR_CR0] & UPC1_CR0_PEN) upc_found(sc, "lpt", cr[UPC1_CFGADDR_PARBASE] << UPC1_PARBASE_SHIFT, LPT_NPORTS, &sc->sc_pintr); /* UART */ if (cr[UPC1_CFGADDR_CR0] & UPC1_CR0_SEN) upc_found(sc, "com", cr[UPC1_CFGADDR_UARTBASE] << UPC1_UARTBASE_SHIFT, COM_NPORTS, &sc->sc_irq4); /* Mouse */ /* XXX not yet supported */ } static void upc2_attach(struct upc_softc *sc) { u_int8_t cr[5]; int i; aprint_normal(": 82C711/82C721"); /* Dump configuration */ for (i = 0; i < 5; i++) cr[i] = upc2_read_config(sc, i); aprint_verbose(", config state %02x %02x %02x %02x %02x", cr[0], cr[1], cr[2], cr[3], cr[4]); aprint_normal("\n"); /* "Find" the attached devices */ /* FDC */ if (cr[0] & UPC2_CR0_FDC_ENABLE) upc_found(sc, "fdc", UPC_PORT_FDCBASE, 2, &sc->sc_fintr); /* IDE */ if (cr[0] & UPC2_CR0_IDE_ENABLE) upc_found2(sc, "wdc", UPC_PORT_IDECMDBASE, 8, UPC_PORT_IDECTLBASE, 2, &sc->sc_wintr); /* Parallel */ switch (cr[1] & UPC2_CR1_LPT_MASK) { case UPC2_CR1_LPT_3BC: upc_found(sc, "lpt", 0x3bc, LPT_NPORTS, &sc->sc_pintr); break; case UPC2_CR1_LPT_378: upc_found(sc, "lpt", 0x378, LPT_NPORTS, &sc->sc_pintr); break; case UPC2_CR1_LPT_278: upc_found(sc, "lpt", 0x278, LPT_NPORTS, &sc->sc_pintr); break; } /* UART1 */ if (cr[2] & UPC2_CR2_UART1_ENABLE) { switch (cr[2] & UPC2_CR2_UART1_MASK) { case UPC2_CR2_UART1_3F8: upc_found(sc, "com", 0x3f8, COM_NPORTS, &sc->sc_irq4); break; case UPC2_CR2_UART1_2F8: upc_found(sc, "com", 0x2f8, COM_NPORTS, &sc->sc_irq3); break; case UPC2_CR2_UART1_COM3: upc_found(sc, "com", upc2_com3_addr(cr[1]), COM_NPORTS, &sc->sc_irq4); break; case UPC2_CR2_UART1_COM4: upc_found(sc, "com", upc2_com4_addr(cr[1]), COM_NPORTS, &sc->sc_irq3); break; } } /* UART2 */ if (cr[2] & UPC2_CR2_UART2_ENABLE) { switch (cr[2] & UPC2_CR2_UART2_MASK) { case UPC2_CR2_UART2_3F8: upc_found(sc, "com", 0x3f8, COM_NPORTS, &sc->sc_irq4); break; case UPC2_CR2_UART2_2F8: upc_found(sc, "com", 0x2f8, COM_NPORTS, &sc->sc_irq3); break; case UPC2_CR2_UART2_COM3: upc_found(sc, "com", upc2_com3_addr(cr[1]), COM_NPORTS, &sc->sc_irq4); break; case UPC2_CR2_UART2_COM4: upc_found(sc, "com", upc2_com4_addr(cr[1]), COM_NPORTS, &sc->sc_irq3); break; } } } static void upc_found(struct upc_softc *sc, char const *devtype, int offset, int size, struct upc_irqhandle *uih) { struct upc_attach_args ua; int locs[UPCCF_NLOCS]; ua.ua_devtype = devtype; ua.ua_offset = offset; ua.ua_iot = sc->sc_iot; bus_space_subregion(sc->sc_iot, sc->sc_ioh, offset, size, &ua.ua_ioh); ua.ua_irqhandle = uih; locs[UPCCF_OFFSET] = offset; config_found_sm_loc(sc->sc_dev, "upc", locs, &ua, upc_print, config_stdsubmatch); } static void upc_found2(struct upc_softc *sc, char const *devtype, int offset, int size, int offset2, int size2, struct upc_irqhandle *uih) { struct upc_attach_args ua; int locs[UPCCF_NLOCS]; ua.ua_devtype = devtype; ua.ua_offset = offset; ua.ua_iot = sc->sc_iot; bus_space_subregion(sc->sc_iot, sc->sc_ioh, offset, size, &ua.ua_ioh); bus_space_subregion(sc->sc_iot, sc->sc_ioh, offset2, size2, &ua.ua_ioh2); ua.ua_irqhandle = uih; locs[UPCCF_OFFSET] = offset; config_found_sm_loc(sc->sc_dev, "upc", locs, &ua, upc_print, config_stdsubmatch); } void upc_intr_establish(struct upc_irqhandle *uih, int level, int (*func)(void *), void *arg) { uih->uih_level = level; uih->uih_func = func; uih->uih_arg = arg; /* Actual MD establishment will be handled later by bus attachment. */ } static int upc2_com3_addr(int cr1) { switch (cr1 & UPC2_CR1_COM34_MASK) { case UPC2_CR1_COM34_338_238: return 0x338; case UPC2_CR1_COM34_3E8_2E8: return 0x3e8; case UPC2_CR1_COM34_2E8_2E0: return 0x2e8; case UPC2_CR1_COM34_220_228: return 0x220; } return -1; } static int upc2_com4_addr(int cr1) { switch (cr1 & UPC2_CR1_COM34_MASK) { case UPC2_CR1_COM34_338_238: return 0x238; case UPC2_CR1_COM34_3E8_2E8: return 0x2e8; case UPC2_CR1_COM34_2E8_2E0: return 0x2e0; case UPC2_CR1_COM34_220_228: return 0x228; } return -1; } static int upc_print(void *aux, char const *pnp) { struct upc_attach_args *ua = aux; if (pnp) aprint_normal("%s at %s", ua->ua_devtype, pnp); aprint_normal(" offset 0x%x", ua->ua_offset); return UNCONF; } int upc1_read_config(struct upc_softc *sc, int reg) { bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; int retval; /* Switch into configuration mode. */ bus_space_write_1(iot, ioh, UPC1_PORT_CFG1, UPC1_CFGMAGIC_1); bus_space_write_1(iot, ioh, UPC1_PORT_CFG2, UPC1_CFGMAGIC_2); bus_space_write_1(iot, ioh, UPC1_PORT_CFG2, UPC1_CFGMAGIC_3); bus_space_write_1(iot, ioh, UPC1_PORT_CFG2, UPC1_PORT_CRI >> UPC1_CONFBASE_SHIFT); bus_space_write_1(iot, ioh, UPC1_PORT_CFG1, (UPC1_PORT_CRI >> UPC1_CONFBASE_SHIFT) ^ 0xff); /* Read register. */ bus_space_write_1(iot, ioh, UPC1_PORT_CRI, reg); retval = bus_space_read_1(iot, ioh, UPC1_PORT_CAP); /* Leave configuration mode. */ bus_space_write_1(iot, ioh, UPC1_PORT_CRI, UPC1_CFGADDR_EXIT); bus_space_write_1(iot, ioh, UPC1_PORT_CAP, 0); return retval; } void upc1_write_config(struct upc_softc *sc, int reg, int val) { bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; /* Switch into configuration mode. */ bus_space_write_1(iot, ioh, UPC1_PORT_CFG1, UPC1_CFGMAGIC_1); bus_space_write_1(iot, ioh, UPC1_PORT_CFG2, UPC1_CFGMAGIC_2); bus_space_write_1(iot, ioh, UPC1_PORT_CFG2, UPC1_CFGMAGIC_3); bus_space_write_1(iot, ioh, UPC1_PORT_CFG2, UPC1_PORT_CRI >> UPC1_CONFBASE_SHIFT); bus_space_write_1(iot, ioh, UPC1_PORT_CFG1, (UPC1_PORT_CRI >> UPC1_CONFBASE_SHIFT) ^ 0xff); /* Read register. */ bus_space_write_1(iot, ioh, UPC1_PORT_CRI, reg); bus_space_write_1(iot, ioh, UPC1_PORT_CAP, val); /* Leave configuration mode. */ bus_space_write_1(iot, ioh, UPC1_PORT_CRI, UPC1_CFGADDR_EXIT); bus_space_write_1(iot, ioh, UPC1_PORT_CAP, 0); } int upc2_read_config(struct upc_softc *sc, int reg) { bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; int retval; /* Switch into configuration mode. */ bus_space_write_1(iot, ioh, UPC2_PORT_CFGADDR, UPC2_CFGMAGIC_ENTER); bus_space_write_1(iot, ioh, UPC2_PORT_CFGADDR, UPC2_CFGMAGIC_ENTER); /* Read register. */ bus_space_write_1(iot, ioh, UPC2_PORT_CFGADDR, reg); retval = bus_space_read_1(iot, ioh, UPC2_PORT_CFGDATA); /* Leave configuration mode. */ bus_space_write_1(iot, ioh, UPC2_PORT_CFGADDR, UPC2_CFGMAGIC_EXIT); return retval; } void upc2_write_config(struct upc_softc *sc, int reg, int val) { bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; /* Switch into configuration mode. */ bus_space_write_1(iot, ioh, UPC2_PORT_CFGADDR, UPC2_CFGMAGIC_ENTER); bus_space_write_1(iot, ioh, UPC2_PORT_CFGADDR, UPC2_CFGMAGIC_ENTER); /* Write register. */ bus_space_write_1(iot, ioh, UPC2_PORT_CFGADDR, reg); bus_space_write_1(iot, ioh, UPC2_PORT_CFGDATA, val); /* Leave configuration mode. */ bus_space_write_1(iot, ioh, UPC2_PORT_CFGADDR, UPC2_CFGMAGIC_EXIT); }