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if_plip.c
(19.13 KB)
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lpbb.c
(5.89 KB)
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lpt.c
(25.22 KB)
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lpt.h
(2.55 KB)
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lptio.h
(676 B)
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pcfclock.c
(7.59 KB)
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ppb_1284.c
(18.27 KB)
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ppb_1284.h
(3.85 KB)
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ppb_base.c
(5.12 KB)
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ppb_msq.c
(7.72 KB)
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ppb_msq.h
(7.23 KB)
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ppbconf.c
(13.35 KB)
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ppbconf.h
(7.08 KB)
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ppbio.h
(3.45 KB)
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ppbus_if.m
(2.04 KB)
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ppi.c
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ppi.h
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pps.c
(7.9 KB)
Editing: ppb_base.c
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/lock.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/mutex.h> #include <sys/systm.h> #include <sys/bus.h> #include <dev/ppbus/ppbconf.h> #include "ppbus_if.h" #include <dev/ppbus/ppbio.h> MODULE_VERSION(ppbus, 1); #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, uint8_t mask, uint8_t status, int how) { struct ppb_data *ppb = DEVTOSOFTC(bus); int i, j, error; uint8_t r; ppb_assert_locked(bus); /* 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); /* wait 10 ms */ error = mtx_sleep((caddr_t)bus, ppb->ppc_lock, PPBPRI | (how == PPB_NOINTR ? 0 : PCATCH), "ppbpoll", hz/100); if (error != EWOULDBLOCK) return (error); } } return (EWOULDBLOCK); } /* * ppb_get_epp_protocol() * * Return the chipset EPP protocol */ int ppb_get_epp_protocol(device_t bus) { uintptr_t protocol; ppb_assert_locked(bus); 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 */ ppb_assert_locked(bus); 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); ppb_assert_locked(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) { ppb_assert_locked(bus); 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) { ppb_assert_locked(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) { ppb_assert_locked(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) { uint8_t r; ppb_assert_locked(bus); 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); } void ppb_lock(device_t bus) { struct ppb_data *ppb = DEVTOSOFTC(bus); mtx_lock(ppb->ppc_lock); } void ppb_unlock(device_t bus) { struct ppb_data *ppb = DEVTOSOFTC(bus); mtx_unlock(ppb->ppc_lock); } void _ppb_assert_locked(device_t bus, const char *file, int line) { mtx_assert_(DEVTOSOFTC(bus)->ppc_lock, MA_OWNED, file, line); } void ppb_init_callout(device_t bus, struct callout *c, int flags) { struct ppb_data *ppb = DEVTOSOFTC(bus); callout_init_mtx(c, ppb->ppc_lock, flags); } int ppb_sleep(device_t bus, void *wchan, int priority, const char *wmesg, int timo) { struct ppb_data *ppb = DEVTOSOFTC(bus); return (mtx_sleep(wchan, ppb->ppc_lock, priority, wmesg, timo)); }
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