/*- * Copyright (c) 1997, 1998, 1999 Nicolas Souchu * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * * $FreeBSD: src/sys/dev/ppbus/ppb_base.c,v 1.10.2.1 2000/08/01 23:26:26 n_hibma Exp $ */ #include #include #include #include #include #include #include "ppbconf.h" #include "ppbus_if.h" #include "ppbio.h" #define DEVTOSOFTC(dev) ((struct ppb_data *)device_get_softc(dev)) /* * ppb_poll_bus() * * Polls the bus * * max is a delay in 10-milliseconds */ int ppb_poll_bus(device_t bus, int max, char mask, char status, int how) { int i, j, error; char r; /* try at least up to 10ms */ for (j = 0; j < ((how & PPB_POLL) ? max : 1); j++) { for (i = 0; i < 10000; i++) { r = ppb_rstr(bus); DELAY(1); if ((r & mask) == status) return (0); } } if (!(how & PPB_POLL)) { for (i = 0; max == PPB_FOREVER || i < max-1; i++) { if ((ppb_rstr(bus) & mask) == status) return (0); switch (how) { case PPB_NOINTR: /* wait 10 ms */ tsleep((caddr_t)bus, 0, "ppbpoll", hz/100); break; case PPB_INTR: default: /* wait 10 ms */ if (((error = tsleep((caddr_t)bus, PCATCH, "ppbpoll", hz/100)) != EWOULDBLOCK) != 0) { return (error); } break; } } } return (EWOULDBLOCK); } /* * ppb_get_epp_protocol() * * Return the chipset EPP protocol */ int ppb_get_epp_protocol(device_t bus) { uintptr_t protocol; BUS_READ_IVAR(device_get_parent(bus), bus, PPC_IVAR_EPP_PROTO, &protocol); return (protocol); } /* * ppb_get_mode() * */ int ppb_get_mode(device_t bus) { struct ppb_data *ppb = DEVTOSOFTC(bus); /* XXX yet device mode = ppbus mode = chipset mode */ return (ppb->mode); } /* * ppb_set_mode() * * Set the operating mode of the chipset, return the previous mode */ int ppb_set_mode(device_t bus, int mode) { struct ppb_data *ppb = DEVTOSOFTC(bus); int old_mode = ppb_get_mode(bus); if (PPBUS_SETMODE(device_get_parent(bus), mode)) return -1; /* XXX yet device mode = ppbus mode = chipset mode */ ppb->mode = (mode & PPB_MASK); return (old_mode); } /* * ppb_write() * * Write charaters to the port */ int ppb_write(device_t bus, char *buf, int len, int how) { return (PPBUS_WRITE(device_get_parent(bus), buf, len, how)); } /* * ppb_reset_epp_timeout() * * Reset the EPP timeout bit in the status register */ int ppb_reset_epp_timeout(device_t bus) { return(PPBUS_RESET_EPP(device_get_parent(bus))); } /* * ppb_ecp_sync() * * Wait for the ECP FIFO to be empty */ int ppb_ecp_sync(device_t bus) { return (PPBUS_ECP_SYNC(device_get_parent(bus))); } /* * ppb_get_status() * * Read the status register and update the status info */ int ppb_get_status(device_t bus, struct ppb_status *status) { char r; r = status->status = ppb_rstr(bus); status->timeout = r & TIMEOUT; status->error = !(r & nFAULT); status->select = r & SELECT; status->paper_end = r & PERROR; status->ack = !(r & nACK); status->busy = !(r & nBUSY); return (0); }