Support for Alpine Serializer/Deserializer.
The exported functions will be used by Alpine Ethernet driver. Obtained from: Semihalf Submitted by: Michal Stanek <mst@semihalf.com> Sponsored by: Annapurna Labs Reviewed by: wma Differential Revision: https://reviews.freebsd.org/D7763
This commit is contained in:
Wojciech Macek
parent
be48125bbf
commit
246d07a7a3
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=307669
225
sys/arm/annapurna/alpine/alpine_serdes.c
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225
sys/arm/annapurna/alpine/alpine_serdes.c
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@ -0,0 +1,225 @@
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/*-
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* Copyright (c) 2015,2016 Annapurna Labs Ltd. and affiliates
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* All rights reserved.
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*
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* Developed by Semihalf.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/module.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/conf.h>
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#include <sys/resource.h>
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#include <machine/bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include "al_serdes.h"
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#include "alpine_serdes.h"
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#define SERDES_NUM_GROUPS 5
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static void *serdes_base;
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static uint32_t serdes_grp_offset[] = {0, 0x400, 0x800, 0xc00, 0x2000};
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static struct alpine_serdes_eth_group_mode {
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struct mtx lock;
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enum alpine_serdes_eth_mode mode;
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bool mode_set;
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} alpine_serdes_eth_group_mode[SERDES_NUM_GROUPS];
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static int al_serdes_probe(device_t dev);
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static int al_serdes_attach(device_t dev);
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static int al_serdes_detach(device_t dev);
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static struct resource_spec al_serdes_spec[] = {
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{ SYS_RES_MEMORY, 0, RF_ACTIVE },
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{ -1, 0 }
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};
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struct al_serdes_softc {
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struct resource *res;
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};
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static device_method_t al_serdes_methods[] = {
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DEVMETHOD(device_probe, al_serdes_probe),
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DEVMETHOD(device_attach, al_serdes_attach),
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DEVMETHOD(device_detach, al_serdes_detach),
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DEVMETHOD_END
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};
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static driver_t al_serdes_driver = {
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"serdes",
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al_serdes_methods,
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sizeof(struct al_serdes_softc)
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};
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static devclass_t al_serdes_devclass;
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DRIVER_MODULE(al_serdes, simplebus, al_serdes_driver,
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al_serdes_devclass, 0, 0);
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DRIVER_MODULE(al_serdes, ofwbus, al_serdes_driver,
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al_serdes_devclass, 0, 0);
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static int
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al_serdes_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_is_compatible(dev, "annapurna-labs,al-serdes"))
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return (ENXIO);
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device_set_desc(dev, "Alpine Serdes");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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al_serdes_attach(device_t dev)
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{
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struct al_serdes_softc *sc;
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int err;
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sc = device_get_softc(dev);
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err = bus_alloc_resources(dev, al_serdes_spec, &sc->res);
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if (err != 0) {
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device_printf(dev, "could not allocate resources\n");
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return (err);
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}
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/* Initialize Serdes group locks and mode */
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for (int i = 0; i < nitems(alpine_serdes_eth_group_mode); i++) {
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mtx_init(&alpine_serdes_eth_group_mode[i].lock, "AlSerdesMtx",
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NULL, MTX_DEF);
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alpine_serdes_eth_group_mode[i].mode_set = false;
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}
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serdes_base = (void *)rman_get_bushandle(sc->res);
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return (0);
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}
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static int
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al_serdes_detach(device_t dev)
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{
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struct al_serdes_softc *sc;
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sc = device_get_softc(dev);
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bus_release_resources(dev, al_serdes_spec, &sc->res);
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for (int i = 0; i < nitems(alpine_serdes_eth_group_mode); i++) {
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mtx_destroy(&alpine_serdes_eth_group_mode[i].lock);
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alpine_serdes_eth_group_mode[i].mode_set = false;
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}
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return (0);
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}
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void *
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alpine_serdes_resource_get(uint32_t group)
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{
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void *base;
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base = NULL;
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if (group >= SERDES_NUM_GROUPS)
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return (NULL);
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if (serdes_base != NULL)
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base = (void *)((uintptr_t)serdes_base +
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serdes_grp_offset[group]);
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return (base);
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}
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int
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alpine_serdes_eth_mode_set(uint32_t group, enum alpine_serdes_eth_mode mode)
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{
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struct alpine_serdes_eth_group_mode *group_mode;
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group_mode = &alpine_serdes_eth_group_mode[group];
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if (serdes_base == NULL)
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return (EINVAL);
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if (group >= SERDES_NUM_GROUPS)
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return (EINVAL);
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mtx_lock(&group_mode->lock);
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if (!group_mode->mode_set || (group_mode->mode != mode)) {
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struct al_serdes_grp_obj obj;
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al_serdes_handle_grp_init(alpine_serdes_resource_get(group),
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group, &obj);
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if (mode == ALPINE_SERDES_ETH_MODE_SGMII)
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obj.mode_set_sgmii(&obj);
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else
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obj.mode_set_kr(&obj);
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group_mode->mode = mode;
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group_mode->mode_set = true;
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}
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mtx_unlock(&group_mode->lock);
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return (0);
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}
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void
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alpine_serdes_eth_group_lock(uint32_t group)
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{
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struct alpine_serdes_eth_group_mode *group_mode;
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group_mode = &alpine_serdes_eth_group_mode[group];
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if (mtx_initialized(&group_mode->lock) == 0)
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return;
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mtx_lock(&group_mode->lock);
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}
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void
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alpine_serdes_eth_group_unlock(uint32_t group)
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{
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struct alpine_serdes_eth_group_mode *group_mode;
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group_mode = &alpine_serdes_eth_group_mode[group];
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if (mtx_initialized(&group_mode->lock) == 0)
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return;
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mtx_unlock(&group_mode->lock);
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}
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61
sys/arm/annapurna/alpine/alpine_serdes.h
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61
sys/arm/annapurna/alpine/alpine_serdes.h
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@ -0,0 +1,61 @@
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/*-
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* Copyright (c) 2015,2016 Annapurna Labs Ltd. and affiliates
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* All rights reserved.
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*
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* Developed by Semihalf.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __ALPINE_SERDES_H__
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#define __ALPINE_SERDES_H__
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/* SerDes ETH mode */
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enum alpine_serdes_eth_mode {
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ALPINE_SERDES_ETH_MODE_SGMII,
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ALPINE_SERDES_ETH_MODE_KR,
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};
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/*
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* Get SerDes group regs base, to be used in relevant Alpine drivers.
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* Valid group is 0..3.
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* Returns virtual base address of the group regs base.
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*/
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void *alpine_serdes_resource_get(uint32_t group);
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/*
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* Set SerDes ETH mode for an entire group, unless already set
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* Valid group is 0..3.
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* Returns 0 upon success.
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*/
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int alpine_serdes_eth_mode_set(uint32_t group,
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enum alpine_serdes_eth_mode mode);
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/* Lock the all serdes group for using common registers */
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void alpine_serdes_eth_group_lock(uint32_t group);
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/* Unlock the all serdes group for using common registers */
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void alpine_serdes_eth_group_unlock(uint32_t group);
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#endif /* __ALPINE_SERDES_H__ */
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@ -159,6 +159,12 @@
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interrupt-parent = <&MPIC>;
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};
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/* SerDes */
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serdes {
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compatible = "annapurna-labs,al-serdes";
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reg = <0x28c0000 0x1000>;
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};
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serial0: serial@2883000 {
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compatible = "ns16550";
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reg = <0x2883000 0x20>;
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@ -15,6 +15,9 @@ arm/annapurna/alpine/alpine_ccu.c optional al_ccu fdt
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arm/annapurna/alpine/alpine_nb_service.c optional al_nb_service fdt
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arm/annapurna/alpine/alpine_pci.c optional al_pci fdt
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arm/annapurna/alpine/alpine_pci_msix.c optional al_pci fdt
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arm/annapurna/alpine/alpine_serdes.c optional al_serdes fdt \
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no-depend \
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compile-with "${CC} -c -o ${.TARGET} ${CFLAGS} -I$S/contrib/alpine-hal -I$S/contrib/alpine-hal/eth ${PROF} ${.IMPSRC}"
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arm/arm/autoconf.c standard
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arm/arm/bcopy_page.S standard
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arm/arm/bcopyinout.S standard
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@ -42,6 +42,9 @@ arm/annapurna/alpine/alpine_ccu.c optional al_ccu fdt
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arm/annapurna/alpine/alpine_nb_service.c optional al_nb_service fdt
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arm/annapurna/alpine/alpine_pci.c optional al_pci fdt
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arm/annapurna/alpine/alpine_pci_msix.c optional al_pci fdt
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arm/annapurna/alpine/alpine_serdes.c optional al_serdes fdt \
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no-depend \
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compile-with "${CC} -c -o ${.TARGET} ${CFLAGS} -I$S/contrib/alpine-hal -I$S/contrib/alpine-hal/eth ${PROF} ${.IMPSRC}"
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arm/arm/generic_timer.c standard
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arm/arm/gic.c standard
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arm/arm/gic_fdt.c optional fdt
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