/* $OpenBSD: com_pcmcia.c,v 1.12 1999/01/28 04:58:29 fgsch Exp $ */ /* $NetBSD: com_pcmcia.c,v 1.15 1998/08/22 17:47:58 msaitoh Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /*- * Copyright (c) 1991 The Regents of the University of California. * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)com.c 7.5 (Berkeley) 5/16/91 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef i386 #include #else #include #endif #include #include #include "com.h" #ifdef i386 #include "pccom.h" #endif #define com_lcr com_cfcr #define SET(t, f) (t) |= (f) struct com_dev { char *name; char *cis1_info[4]; }; /* Devices that we need to match by CIS strings */ static struct com_dev com_devs[] = { { PCMCIA_STR_MEGAHERTZ_XJ2288, PCMCIA_CIS_MEGAHERTZ_XJ2288 }, }; static int com_devs_size = sizeof(com_devs) / sizeof(com_devs[0]); static struct com_dev *com_dev_match __P((struct pcmcia_card *)); int com_pcmcia_match __P((struct device *, void *, void *)); void com_pcmcia_attach __P((struct device *, struct device *, void *)); void com_pcmcia_cleanup __P((void *)); int com_pcmcia_enable __P((struct com_softc *)); void com_pcmcia_disable __P((struct com_softc *)); int com_pcmcia_enable1 __P((struct com_softc *)); void com_pcmcia_disable1 __P((struct com_softc *)); void com_attach __P((struct com_softc *)); struct com_pcmcia_softc { struct com_softc sc_com; /* real "com" softc */ /* PCMCIA-specific goo */ struct pcmcia_io_handle sc_pcioh; /* PCMCIA i/o space info */ int sc_io_window; /* our i/o window */ struct pcmcia_function *sc_pf; /* our PCMCIA function */ void *sc_ih; /* interrupt handler */ }; #if NCOM_PCMCIA struct cfattach com_pcmcia_ca = { sizeof(struct com_pcmcia_softc), com_pcmcia_match, com_pcmcia_attach }; #elif NPCCOM_PCMCIA struct cfattach pccom_pcmcia_ca = { sizeof(struct com_pcmcia_softc), com_pcmcia_match, com_pcmcia_attach }; #endif /* Look for pcmcia cards with particular CIS strings */ static struct com_dev * com_dev_match(card) struct pcmcia_card *card; { int i, j; for (i = 0; i < com_devs_size; i++) { for (j = 0; j < 4; j++) if (com_devs[i].cis1_info[j] && strcmp(com_devs[i].cis1_info[j], card->cis1_info[j])) break; if (j == 4) return &com_devs[i]; } return NULL; } int com_pcmcia_match(parent, match, aux) struct device *parent; void *match, *aux; { int comportmask; struct pcmcia_attach_args *pa = aux; struct pcmcia_config_entry *cfe; /* 1. Does it claim to be a serial device? */ if (pa->pf->function == PCMCIA_FUNCTION_SERIAL) return 1; /* 2. Does it have all four 'standard' port ranges? */ comportmask = 0; for (cfe = pa->pf->cfe_head.sqh_first; cfe; cfe = cfe->cfe_list.sqe_next) { switch (cfe->iospace[0].start) { case IO_COM1: comportmask |= 1; break; case IO_COM2: comportmask |= 2; break; case IO_COM3: comportmask |= 4; break; case IO_COM4: comportmask |= 8; break; } } if (comportmask == 15) return 1; /* 3. Is this a card we know about? */ if (com_dev_match(pa->card) != NULL) return 1; return 0; } void com_pcmcia_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct com_pcmcia_softc *psc = (void *) self; struct com_softc *sc = &psc->sc_com; struct pcmcia_attach_args *pa = aux; struct pcmcia_config_entry *cfe; int autoalloc = 0; psc->sc_pf = pa->pf; retry: /* find a cfe we can use */ for (cfe = pa->pf->cfe_head.sqh_first; cfe; cfe = cfe->cfe_list.sqe_next) { #if 0 /* * Some modem cards (e.g. Xircom CM33) also have * mem space. Don't bother with this check. */ if (cfe->num_memspace != 0) continue; #endif if (cfe->num_iospace != 1) continue; if (!pcmcia_io_alloc(pa->pf, autoalloc ? 0 : cfe->iospace[0].start, cfe->iospace[0].length, (1 << cfe->iomask), &psc->sc_pcioh)) { goto found; } } if (autoalloc == 0) { autoalloc = 1; goto retry; } else if (!cfe) { printf(": can't allocate i/o space\n"); return; } found: sc->sc_iot = psc->sc_pcioh.iot; sc->sc_ioh = psc->sc_pcioh.ioh; /* Enable the card. */ pcmcia_function_init(pa->pf, cfe); if (com_pcmcia_enable1(sc)) printf(": function enable failed\n"); #ifdef notyet sc->enabled = 1; #endif /* map in the io space */ if (pcmcia_io_map(pa->pf, ((cfe->flags & PCMCIA_CFE_IO16) ? PCMCIA_WIDTH_IO16 : PCMCIA_WIDTH_IO8), 0, psc->sc_pcioh.size, &psc->sc_pcioh, &psc->sc_io_window)) { printf(": can't map i/o space\n"); return; } sc->sc_iobase = -1; #ifdef notyet sc->sc_frequency = COM_FREQ; sc->enable = com_pcmcia_enable; sc->disable = com_pcmcia_disable; printf(": serial device"); com_attach_subr(sc); #endif com_attach(sc); /* establish the interrupt. */ psc->sc_ih = pcmcia_intr_establish(pa->pf, IPL_TTY, comintr, sc); if (psc->sc_ih == NULL) printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname); #ifdef notyet sc->enabled = 0; com_pcmcia_disable1(sc); #endif } int com_pcmcia_enable(sc) struct com_softc *sc; { struct com_pcmcia_softc *psc = (struct com_pcmcia_softc *) sc; struct pcmcia_function *pf = psc->sc_pf; /* establish the interrupt. */ psc->sc_ih = pcmcia_intr_establish(pf, IPL_TTY, comintr, sc); if (psc->sc_ih == NULL) { printf("%s: couldn't establish interrupt\n", sc->sc_dev.dv_xname); return (1); } return com_pcmcia_enable1(sc); } int com_pcmcia_enable1(sc) struct com_softc *sc; { struct com_pcmcia_softc *psc = (struct com_pcmcia_softc *) sc; struct pcmcia_function *pf = psc->sc_pf; int ret; if ((ret = pcmcia_function_enable(pf))) return(ret); if ((psc->sc_pf->sc->card.product == PCMCIA_PRODUCT_3COM_3C562) || (psc->sc_pf->sc->card.product == PCMCIA_PRODUCT_3COM_3CXEM556)) { int reg; /* turn off the ethernet-disable bit */ reg = pcmcia_ccr_read(pf, PCMCIA_CCR_OPTION); if (reg & 0x08) { reg &= ~0x08; pcmcia_ccr_write(pf, PCMCIA_CCR_OPTION, reg); } } return(ret); } void com_pcmcia_disable(sc) struct com_softc *sc; { struct com_pcmcia_softc *psc = (struct com_pcmcia_softc *) sc; com_pcmcia_disable1(sc); pcmcia_intr_disestablish(psc->sc_pf, psc->sc_ih); } void com_pcmcia_disable1(sc) struct com_softc *sc; { struct com_pcmcia_softc *psc = (struct com_pcmcia_softc *) sc; pcmcia_function_disable(psc->sc_pf); } /* * XXX This should be handled by a generic attach */ void com_attach(sc) struct com_softc *sc; { bus_space_tag_t iot = sc->sc_iot; bus_space_handle_t ioh = sc->sc_ioh; u_int8_t lcr; sc->sc_hwflags = 0; sc->sc_swflags = 0; /* * Probe for all known forms of UART. */ lcr = bus_space_read_1(iot, ioh, com_lcr); bus_space_write_1(iot, ioh, com_lcr, LCR_EFR); bus_space_write_1(iot, ioh, com_efr, 0); bus_space_write_1(iot, ioh, com_lcr, 0); bus_space_write_1(iot, ioh, com_fifo, FIFO_ENABLE); delay(100); switch(bus_space_read_1(iot, ioh, com_iir) >> 6) { case 0: sc->sc_uarttype = COM_UART_16450; break; case 2: sc->sc_uarttype = COM_UART_16550; break; case 3: sc->sc_uarttype = COM_UART_16550A; break; default: sc->sc_uarttype = COM_UART_UNKNOWN; break; } if (sc->sc_uarttype == COM_UART_16550A) { /* Probe for ST16650s */ bus_space_write_1(iot, ioh, com_lcr, lcr | LCR_DLAB); if (bus_space_read_1(iot, ioh, com_efr) == 0) { sc->sc_uarttype = COM_UART_ST16650; } else { bus_space_write_1(iot, ioh, com_lcr, LCR_EFR); if (bus_space_read_1(iot, ioh, com_efr) == 0) sc->sc_uarttype = COM_UART_ST16650V2; } } #ifdef i386 if (sc->sc_uarttype == COM_UART_ST16650V2) { /* Probe for XR16850s */ u_int8_t dlbl, dlbh; /* Enable latch access and get the current values. */ bus_space_write_1(iot, ioh, com_lcr, lcr | LCR_DLAB); dlbl = bus_space_read_1(iot, ioh, com_dlbl); dlbh = bus_space_read_1(iot, ioh, com_dlbh); /* Zero out the latch divisors */ bus_space_write_1(iot, ioh, com_dlbl, 0); bus_space_write_1(iot, ioh, com_dlbh, 0); if (bus_space_read_1(iot, ioh, com_dlbh) == 0x10) { sc->sc_uarttype = COM_UART_XR16850; sc->sc_uartrev = bus_space_read_1(iot, ioh, com_dlbl); } /* Reset to original. */ bus_space_write_1(iot, ioh, com_dlbl, dlbl); bus_space_write_1(iot, ioh, com_dlbh, dlbh); } #endif /* Reset the LCR (latch access is probably enabled). */ bus_space_write_1(iot, ioh, com_lcr, lcr); if (sc->sc_uarttype == COM_UART_16450) { /* Probe for 8250 */ u_int8_t scr0, scr1, scr2; scr0 = bus_space_read_1(iot, ioh, com_scratch); bus_space_write_1(iot, ioh, com_scratch, 0xa5); scr1 = bus_space_read_1(iot, ioh, com_scratch); bus_space_write_1(iot, ioh, com_scratch, 0x5a); scr2 = bus_space_read_1(iot, ioh, com_scratch); bus_space_write_1(iot, ioh, com_scratch, scr0); if ((scr1 != 0xa5) || (scr2 != 0x5a)) sc->sc_uarttype = COM_UART_8250; } /* * Print UART type and initialize ourself. */ sc->sc_fifolen = 1; /* default */ switch (sc->sc_uarttype) { case COM_UART_UNKNOWN: printf(": unknown uart\n"); break; case COM_UART_8250: printf(": ns8250, no fifo\n"); break; case COM_UART_16450: printf(": ns16450, no fifo\n"); break; case COM_UART_16550: printf(": ns16550, no working fifo\n"); break; case COM_UART_16550A: printf(": ns16550a, 16 byte fifo\n"); SET(sc->sc_hwflags, COM_HW_FIFO); sc->sc_fifolen = 16; break; case COM_UART_ST16650: printf(": st16650, no working fifo\n"); break; case COM_UART_ST16650V2: printf(": st16650, 32 byte fifo\n"); SET(sc->sc_hwflags, COM_HW_FIFO); sc->sc_fifolen = 32; break; #ifdef i386 case COM_UART_XR16850: printf(": xr16850 (rev %d), 128 byte fifo\n", sc->sc_uartrev); SET(sc->sc_hwflags, COM_HW_FIFO); sc->sc_fifolen = 128; break; #endif default: panic("comattach: bad fifo type"); } /* clear and disable fifo */ bus_space_write_1(iot, ioh, com_fifo, FIFO_RCV_RST | FIFO_XMT_RST); (void)bus_space_read_1(iot, ioh, com_data); bus_space_write_1(iot, ioh, com_fifo, 0); }