224 lines
6.2 KiB
C
224 lines
6.2 KiB
C
/* $NetBSD$ */
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/*-
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* Copyright (c) 2020 Romain Dolbeau <romain@dolbeau.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <machine/autoconf.h>
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#include <sys/cpu.h>
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#include <sys/conf.h>
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#include <sys/rndsource.h>
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#include <dev/sbus/sbusvar.h>
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#include <dev/sbus/sbusfpga_stat.h>
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#include <machine/param.h>
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int sbusfpga_stat_print(void *, const char *);
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int sbusfpga_stat_match(device_t, cfdata_t, void *);
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void sbusfpga_stat_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(sbusfpga_stat, sizeof(struct sbusfpga_sbus_bus_stat_softc),
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sbusfpga_stat_match, sbusfpga_stat_attach, NULL, NULL);
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dev_type_open(sbusfpga_stat_open);
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dev_type_close(sbusfpga_stat_close);
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const struct cdevsw sbusfpga_stat_cdevsw = {
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.d_open = sbusfpga_stat_open,
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.d_close = sbusfpga_stat_close,
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.d_read = noread,
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.d_write = nowrite,
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.d_ioctl = noioctl,
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.d_stop = nostop,
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.d_tty = notty,
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.d_poll = nopoll,
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.d_mmap = nommap,
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.d_kqfilter = nokqfilter,
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.d_discard = nodiscard,
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.d_flag = 0
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};
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extern struct cfdriver sbusfpga_stat_cd;
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int
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sbusfpga_stat_open(dev_t dev, int flags, int mode, struct lwp *l)
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{
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return (0);
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}
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int
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sbusfpga_stat_close(dev_t dev, int flags, int mode, struct lwp *l)
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{
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return (0);
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}
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int
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sbusfpga_stat_print(void *aux, const char *busname)
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{
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sbus_print(aux, busname);
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return (UNCONF);
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}
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int
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sbusfpga_stat_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct sbus_attach_args *sa = (struct sbus_attach_args *)aux;
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return (strcmp("RDOL,sbusstat", sa->sa_name) == 0);
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}
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#define CONFIG_CSR_DATA_WIDTH 32
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// define CSR_LEDS_BASE & others to avoid defining the CSRs of HW we don't handle
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#define CSR_LEDS_BASE
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#define CSR_CURVE25519ENGINE_BASE
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#define CSR_DDRPHY_BASE
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#define CSR_EXCHANGE_WITH_MEM_BASE
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// #define CSR_SBUS_BUS_STAT_BASE
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#define CSR_SDRAM_BASE
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#define CSR_SDBLOCK2MEM_BASE
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#define CSR_SDCORE_BASE
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#define CSR_SDIRQ_BASE
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#define CSR_SDMEM2BLOCK_BASE
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#define CSR_SDPHY_BASE
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#define CSR_TRNG_BASE
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#include "dev/sbus/litex_csr.h"
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#undef CSR_LEDS_BASE
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#undef CSR_CURVE25519ENGINE_BASE
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#undef CSR_DDRPHY_BASE
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#undef CSR_EXCHANGE_WITH_MEM_BASE
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// #undef CSR_SBUS_BUS_STAT_BASE
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#undef CSR_SDRAM_BASE
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#undef CSR_SDBLOCK2MEM_BASE
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#undef CSR_SDCORE_BASE
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#undef CSR_SDIRQ_BASE
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#undef CSR_SDMEM2BLOCK_BASE
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#undef CSR_SDPHY_BASE
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//#undef CSR_TRNG_BASE
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static void sbusfpga_stat_display(void *);
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/*
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* Attach all the sub-devices we can find
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*/
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void
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sbusfpga_stat_attach(device_t parent, device_t self, void *aux)
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{
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struct sbus_attach_args *sa = aux;
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struct sbusfpga_sbus_bus_stat_softc *sc = device_private(self);
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struct sbus_softc *sbsc = device_private(parent);
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int node;
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int sbusburst;
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sc->sc_bustag = sa->sa_bustag;
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sc->sc_dev = self;
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if (sbus_bus_map(sc->sc_bustag, sa->sa_slot, sa->sa_offset, sa->sa_size,
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BUS_SPACE_MAP_LINEAR, &sc->sc_bhregs_sbus_bus_stat) != 0) {
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aprint_error(": cannot map registers\n");
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return;
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}
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sc->sc_bufsiz = sa->sa_size;
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node = sc->sc_node = sa->sa_node;
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/*
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* Get transfer burst size from PROM
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*/
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sbusburst = sbsc->sc_burst;
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if (sbusburst == 0)
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sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
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sc->sc_burst = prom_getpropint(node, "burst-sizes", -1);
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if (sc->sc_burst == -1)
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/* take SBus burst sizes */
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sc->sc_burst = sbusburst;
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/* Clamp at parent's burst sizes */
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sc->sc_burst &= sbusburst;
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aprint_normal("\n");
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aprint_normal_dev(self, "nid 0x%x, bustag %p, burst 0x%x (parent 0x%0x)\n",
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sc->sc_node,
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sc->sc_bustag,
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sc->sc_burst,
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sbsc->sc_burst);
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sc->sc_delay = 5 * hz; // five seconds
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callout_init(&sc->sc_display, CALLOUT_MPSAFE);
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callout_setfunc(&sc->sc_display, sbusfpga_stat_display, sc);
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callout_schedule(&sc->sc_display, sc->sc_delay);
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}
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static void sbusfpga_stat_display(void *args) {
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struct sbusfpga_sbus_bus_stat_softc *sc = args;
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unsigned int c = sbus_bus_stat_stat_cycle_counter_read(sc), c2;
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int count;
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sbus_bus_stat_stat_ctrl_write(sc, 1);
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delay(1);
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count = 0;
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while (count < 10 && ((c2 = sbus_bus_stat_stat_cycle_counter_read(sc)) == c)) {
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count ++;
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delay(1);
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}
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if ((c2 == c) || (c2 == 0)){
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device_printf(sc->sc_dev, "Statistics didn't update\n");
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} else {
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device_printf(sc->sc_dev, "%u: slave %u %u %u %u\n",
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c2,
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sbus_bus_stat_stat_slave_start_counter_read(sc),
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sbus_bus_stat_stat_slave_done_counter_read(sc),
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sbus_bus_stat_stat_slave_rerun_counter_read(sc),
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sbus_bus_stat_stat_slave_early_error_counter_read(sc));
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device_printf(sc->sc_dev, "%u: master %u %u %u %u (0x%08x)\n",
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c2,
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sbus_bus_stat_stat_master_start_counter_read(sc),
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sbus_bus_stat_stat_master_done_counter_read(sc),
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sbus_bus_stat_stat_master_error_counter_read(sc),
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sbus_bus_stat_stat_master_rerun_counter_read(sc),
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sbus_bus_stat_sbus_master_error_virtual_read(sc));
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}
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sbus_bus_stat_stat_ctrl_write(sc, 0);
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callout_schedule(&sc->sc_display, sc->sc_delay);
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}
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