diff options
| -rw-r--r-- | sys/conf/files | 2 | ||||
| -rw-r--r-- | sys/dev/extres/hwreset/hwreset.c | 186 | ||||
| -rw-r--r-- | sys/dev/extres/hwreset/hwreset.h | 67 | ||||
| -rw-r--r-- | sys/dev/extres/hwreset/hwreset_if.m | 72 |
4 files changed, 327 insertions, 0 deletions
diff --git a/sys/conf/files b/sys/conf/files index f721d43..076b3ce 100644 --- a/sys/conf/files +++ b/sys/conf/files @@ -1417,6 +1417,8 @@ dev/extres/clk/clk_div.c optional ext_resources clk dev/extres/clk/clk_fixed.c optional ext_resources clk dev/extres/clk/clk_gate.c optional ext_resources clk dev/extres/clk/clk_mux.c optional ext_resources clk +dev/extres/hwreset/hwreset.c optional ext_resources hwreset +dev/extres/hwreset/hwreset_if.m optional ext_resources hwreset dev/fatm/if_fatm.c optional fatm pci dev/fb/fbd.c optional fbd | vt dev/fb/fb_if.m standard diff --git a/sys/dev/extres/hwreset/hwreset.c b/sys/dev/extres/hwreset/hwreset.c new file mode 100644 index 0000000..b3493de --- /dev/null +++ b/sys/dev/extres/hwreset/hwreset.c @@ -0,0 +1,186 @@ +/*- + * Copyright 2016 Michal Meloun <mmel@FreeBSD.org> + * 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. + * + * $FreeBSD$ + */ +#include "opt_platform.h" +#include <sys/cdefs.h> +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/kobj.h> +#include <sys/malloc.h> +#include <sys/systm.h> + +#ifdef FDT +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> +#endif + +#include <dev/extres/hwreset/hwreset.h> + +#include "hwreset_if.h" + +struct hwreset { + device_t consumer_dev; /* consumer device*/ + device_t provider_dev; /* provider device*/ + int rst_id; /* reset id */ +}; + +MALLOC_DEFINE(M_HWRESET, "hwreset", "Reset framework"); + +int +hwreset_assert(hwreset_t rst) +{ + + return (HWRESET_ASSERT(rst->provider_dev, rst->rst_id, true)); +} + +int +hwreset_deassert(hwreset_t rst) +{ + + return (HWRESET_ASSERT(rst->provider_dev, rst->rst_id, false)); +} + +int +hwreset_is_asserted(hwreset_t rst, bool *value) +{ + + return (HWRESET_IS_ASSERTED(rst->provider_dev, rst->rst_id, value)); +} + +void +hwreset_release(hwreset_t rst) +{ + free(rst, M_HWRESET); +} + +int +hwreset_get_by_id(device_t consumer_dev, device_t provider_dev, intptr_t id, + hwreset_t *rst_out) +{ + hwreset_t rst; + + /* Create handle */ + rst = malloc(sizeof(struct hwreset), M_HWRESET, + M_WAITOK | M_ZERO); + rst->consumer_dev = consumer_dev; + rst->provider_dev = provider_dev; + rst->rst_id = id; + *rst_out = rst; + return (0); +} + +#ifdef FDT +int +hwreset_default_ofw_map(device_t provider_dev, phandle_t xref, int ncells, + pcell_t *cells, intptr_t *id) +{ + if (ncells == 0) + *id = 1; + else if (ncells == 1) + *id = cells[0]; + else + return (ERANGE); + + return (0); +} + +int +hwreset_get_by_ofw_idx(device_t consumer_dev, int idx, hwreset_t *rst) +{ + phandle_t cnode, xnode; + pcell_t *cells; + device_t rstdev; + int ncells, rv; + intptr_t id; + + cnode = ofw_bus_get_node(consumer_dev); + if (cnode <= 0) { + device_printf(consumer_dev, + "%s called on not ofw based device\n", __func__); + return (ENXIO); + } + + rv = ofw_bus_parse_xref_list_alloc(cnode, "resets", "#reset-cells", + idx, &xnode, &ncells, &cells); + if (rv != 0) + return (rv); + + /* Tranlate provider to device */ + rstdev = OF_device_from_xref(xnode); + if (rstdev == NULL) { + free(cells, M_OFWPROP); + return (ENODEV); + } + /* Map reset to number */ + rv = HWRESET_MAP(rstdev, xnode, ncells, cells, &id); + free(cells, M_OFWPROP); + if (rv != 0) + return (rv); + + return (hwreset_get_by_id(consumer_dev, rstdev, id, rst)); +} + +int +hwreset_get_by_ofw_name(device_t consumer_dev, char *name, hwreset_t *rst) +{ + int rv, idx; + phandle_t cnode; + + cnode = ofw_bus_get_node(consumer_dev); + if (cnode <= 0) { + device_printf(consumer_dev, + "%s called on not ofw based device\n", __func__); + return (ENXIO); + } + rv = ofw_bus_find_string_index(cnode, "reset-names", name, &idx); + if (rv != 0) + return (rv); + return (hwreset_get_by_ofw_idx(consumer_dev, idx, rst)); +} + +void +hwreset_register_ofw_provider(device_t provider_dev) +{ + phandle_t xref, node; + + node = ofw_bus_get_node(provider_dev); + if (node <= 0) + panic("%s called on not ofw based device.\n", __func__); + + xref = OF_xref_from_node(node); + OF_device_register_xref(xref, provider_dev); +} + +void +hwreset_unregister_ofw_provider(device_t provider_dev) +{ + phandle_t xref; + + xref = OF_xref_from_device(provider_dev); + OF_device_register_xref(xref, NULL); +} +#endif diff --git a/sys/dev/extres/hwreset/hwreset.h b/sys/dev/extres/hwreset/hwreset.h new file mode 100644 index 0000000..75e653a --- /dev/null +++ b/sys/dev/extres/hwreset/hwreset.h @@ -0,0 +1,67 @@ +/*- + * Copyright 2016 Michal Meloun <mmel@FreeBSD.org> + * 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 ``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. + * + * $FreeBSD$ + */ + +#ifndef DEV_EXTRES_HWRESET_HWRESET_H +#define DEV_EXTRES_HWRESET_HWRESET_H + +#include "opt_platform.h" +#include <sys/types.h> +#ifdef FDT +#include <dev/ofw/ofw_bus.h> +#endif + +typedef struct hwreset *hwreset_t; + +/* + * Provider interface + */ +#ifdef FDT +int hwreset_default_ofw_map(device_t provider_dev, phandle_t xref, int ncells, + pcell_t *cells, intptr_t *id); +void hwreset_register_ofw_provider(device_t provider_dev); +void hwreset_unregister_ofw_provider(device_t provider_dev); +#endif + +/* + * Consumer interface + */ +int hwreset_get_by_id(device_t consumer_dev, device_t provider_dev, intptr_t id, + hwreset_t *rst); +void hwreset_release(hwreset_t rst); + +int hwreset_assert(hwreset_t rst); +int hwreset_deassert(hwreset_t rst); +int hwreset_is_asserted(hwreset_t rst, bool *value); + +#ifdef FDT +int hwreset_get_by_ofw_name(device_t consumer_dev, char *name, hwreset_t *rst); +int hwreset_get_by_ofw_idx(device_t consumer_dev, int idx, hwreset_t *rst); +#endif + + + +#endif /* DEV_EXTRES_HWRESET_HWRESET_H */ diff --git a/sys/dev/extres/hwreset/hwreset_if.m b/sys/dev/extres/hwreset/hwreset_if.m new file mode 100644 index 0000000..f1816f9 --- /dev/null +++ b/sys/dev/extres/hwreset/hwreset_if.m @@ -0,0 +1,72 @@ +#- +# Copyright 2016 Michal Meloun <mmel@FreeBSD.org> +# 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. +# +# $FreeBSD$ +# + +#ifdef FDT +#include <sys/types.h> +#include <dev/ofw/ofw_bus.h> +#endif + +INTERFACE hwreset; + +#ifdef FDT +HEADER { +int hwreset_default_ofw_map(device_t , phandle_t, int, pcell_t *, intptr_t *); +} + +# +# map fdt property cells to reset id +# Returns 0 on success or a standard errno value. +# +METHOD int map { + device_t provider_dev; + phandle_t xref; + int ncells; + pcell_t *cells; + intptr_t *id; +} DEFAULT hwreset_default_ofw_map; +#endif + +# +# Assert/deassert given reset. +# Returns 0 on success or a standard errno value. +# +METHOD int assert { + device_t provider_dev; + intptr_t id; + bool value; +}; + +# +# Get actual status of given reset. +# Returns 0 on success or a standard errno value. +# +METHOD int is_asserted { + device_t provider_dev; + intptr_t id; + bool *value; +}; |
