[sdhci] Add ACPI platform support for SDHCI driver
- Create ACPI version of SDHCI attach/detach/accessors logic. Some
platforms (e.g. BayTrail-based Minnowboard) expose SDHCI devices
via ACPI, not PCI
- Add sdchi_acpi kernel module
Reviewed by: ian, imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D9112
This commit is contained in:
Oleksandr Tymoshenko
parent
d01e6ad41b
commit
e5d519fdbc
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=311911
@ -2826,6 +2826,7 @@ dev/scc/scc_dev_z8530.c optional scc
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dev/sdhci/sdhci.c optional sdhci
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dev/sdhci/sdhci_fdt_gpio.c optional sdhci fdt gpio
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dev/sdhci/sdhci_if.m optional sdhci
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dev/sdhci/sdhci_acpi.c optional sdhci acpi
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dev/sdhci/sdhci_pci.c optional sdhci pci
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dev/sf/if_sf.c optional sf pci
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dev/sge/if_sge.c optional sge pci
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370
sys/dev/sdhci/sdhci_acpi.c
Normal file
370
sys/dev/sdhci/sdhci_acpi.c
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@ -0,0 +1,370 @@
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/*-
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* Copyright (c) 2017 Oleksandr Tymoshenko <gonzo@FreeBSD.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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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/bus.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <sys/sysctl.h>
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#include <sys/taskqueue.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <machine/stdarg.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/mmc/bridge.h>
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#include <dev/mmc/mmcreg.h>
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#include <dev/mmc/mmcbrvar.h>
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#include "sdhci.h"
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#include "mmcbr_if.h"
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#include "sdhci_if.h"
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static const struct sdhci_acpi_device {
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const char* hid;
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int uid;
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const char *desc;
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u_int quirks;
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} sdhci_acpi_devices[] = {
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{ "80860F14", 1, "Intel Bay Trail eMMC 4.5 Controller",
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SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE |
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SDHCI_QUIRK_INTEL_POWER_UP_RESET },
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{ "80860F16", 0, "Intel Bay Trail SD Host Controller",
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0 },
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{ NULL, 0, NULL, 0}
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};
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static char *sdhci_ids[] = {
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"80860F14",
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"80860F16",
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NULL
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};
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struct sdhci_acpi_softc {
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u_int quirks; /* Chip specific quirks */
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struct resource *irq_res; /* IRQ resource */
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void *intrhand; /* Interrupt handle */
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struct sdhci_slot slot;
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struct resource *mem_res; /* Memory resource */
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};
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static void sdhci_acpi_intr(void *arg);
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static int sdhci_acpi_detach(device_t dev);
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static uint8_t
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sdhci_acpi_read_1(device_t dev, struct sdhci_slot *slot, bus_size_t off)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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bus_barrier(sc->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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return bus_read_1(sc->mem_res, off);
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}
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static void
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sdhci_acpi_write_1(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint8_t val)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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bus_barrier(sc->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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bus_write_1(sc->mem_res, off, val);
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}
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static uint16_t
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sdhci_acpi_read_2(device_t dev, struct sdhci_slot *slot, bus_size_t off)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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bus_barrier(sc->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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return bus_read_2(sc->mem_res, off);
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}
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static void
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sdhci_acpi_write_2(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint16_t val)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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bus_barrier(sc->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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bus_write_2(sc->mem_res, off, val);
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}
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static uint32_t
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sdhci_acpi_read_4(device_t dev, struct sdhci_slot *slot, bus_size_t off)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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bus_barrier(sc->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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return bus_read_4(sc->mem_res, off);
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}
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static void
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sdhci_acpi_write_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint32_t val)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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bus_barrier(sc->mem_res, 0, 0xFF,
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BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
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bus_write_4(sc->mem_res, off, val);
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}
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static void
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sdhci_acpi_read_multi_4(device_t dev, struct sdhci_slot *slot,
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bus_size_t off, uint32_t *data, bus_size_t count)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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bus_read_multi_stream_4(sc->mem_res, off, data, count);
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}
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static void
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sdhci_acpi_write_multi_4(device_t dev, struct sdhci_slot *slot,
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bus_size_t off, uint32_t *data, bus_size_t count)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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bus_write_multi_stream_4(sc->mem_res, off, data, count);
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}
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static const struct sdhci_acpi_device *
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sdhci_acpi_find_device(device_t dev)
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{
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const char *hid;
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int i, uid;
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ACPI_HANDLE handle;
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ACPI_STATUS status;
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hid = ACPI_ID_PROBE(device_get_parent(dev), dev, sdhci_ids);
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if (hid == NULL)
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return (NULL);
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handle = acpi_get_handle(dev);
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status = acpi_GetInteger(handle, "_UID", &uid);
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if (ACPI_FAILURE(status))
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uid = 0;
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for (i = 0; sdhci_acpi_devices[i].hid != NULL; i++) {
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if (strcmp(sdhci_acpi_devices[i].hid, hid) != 0)
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continue;
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if ((sdhci_acpi_devices[i].uid != 0) &&
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(sdhci_acpi_devices[i].uid != uid))
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continue;
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return &sdhci_acpi_devices[i];
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}
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return (NULL);
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}
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static int
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sdhci_acpi_probe(device_t dev)
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{
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const struct sdhci_acpi_device *acpi_dev;
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acpi_dev = sdhci_acpi_find_device(dev);
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if (acpi_dev == NULL)
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return (ENXIO);
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device_set_desc(dev, acpi_dev->desc);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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sdhci_acpi_attach(device_t dev)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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int rid, err;
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const struct sdhci_acpi_device *acpi_dev;
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acpi_dev = sdhci_acpi_find_device(dev);
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if (acpi_dev == NULL)
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return (ENXIO);
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sc->quirks = acpi_dev->quirks;
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/* Allocate IRQ. */
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rid = 0;
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sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
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RF_ACTIVE);
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if (sc->irq_res == NULL) {
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device_printf(dev, "can't allocate IRQ\n");
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return (ENOMEM);
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}
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rid = 0;
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sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&rid, RF_ACTIVE);
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if (sc->mem_res == NULL) {
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device_printf(dev, "can't allocate memory resource for slot\n");
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sdhci_acpi_detach(dev);
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return (ENOMEM);
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}
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sc->slot.quirks = sc->quirks;
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err = sdhci_init_slot(dev, &sc->slot, 0);
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if (err) {
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device_printf(dev, "failed to init slot\n");
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sdhci_acpi_detach(dev);
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return (err);
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}
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/* Activate the interrupt */
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err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
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NULL, sdhci_acpi_intr, sc, &sc->intrhand);
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if (err) {
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device_printf(dev, "can't setup IRQ\n");
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sdhci_acpi_detach(dev);
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return (err);
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}
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/* Process cards detection. */
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sdhci_start_slot(&sc->slot);
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return (0);
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}
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static int
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sdhci_acpi_detach(device_t dev)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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if (sc->intrhand)
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bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
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if (sc->irq_res)
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bus_release_resource(dev, SYS_RES_IRQ,
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rman_get_rid(sc->irq_res), sc->irq_res);
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if (sc->mem_res) {
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sdhci_cleanup_slot(&sc->slot);
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bus_release_resource(dev, SYS_RES_MEMORY,
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rman_get_rid(sc->mem_res), sc->mem_res);
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}
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return (0);
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}
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static int
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sdhci_acpi_shutdown(device_t dev)
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{
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return (0);
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}
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static int
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sdhci_acpi_suspend(device_t dev)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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int err;
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err = bus_generic_suspend(dev);
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if (err)
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return (err);
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sdhci_generic_suspend(&sc->slot);
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return (0);
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}
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static int
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sdhci_acpi_resume(device_t dev)
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{
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struct sdhci_acpi_softc *sc = device_get_softc(dev);
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int err;
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sdhci_generic_resume(&sc->slot);
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err = bus_generic_resume(dev);
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if (err)
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return (err);
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return (0);
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}
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static void
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sdhci_acpi_intr(void *arg)
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{
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struct sdhci_acpi_softc *sc = (struct sdhci_acpi_softc *)arg;
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sdhci_generic_intr(&sc->slot);
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}
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static device_method_t sdhci_methods[] = {
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/* device_if */
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DEVMETHOD(device_probe, sdhci_acpi_probe),
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DEVMETHOD(device_attach, sdhci_acpi_attach),
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DEVMETHOD(device_detach, sdhci_acpi_detach),
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DEVMETHOD(device_shutdown, sdhci_acpi_shutdown),
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DEVMETHOD(device_suspend, sdhci_acpi_suspend),
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DEVMETHOD(device_resume, sdhci_acpi_resume),
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/* Bus interface */
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DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar),
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DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar),
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/* mmcbr_if */
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DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios),
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DEVMETHOD(mmcbr_request, sdhci_generic_request),
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DEVMETHOD(mmcbr_get_ro, sdhci_generic_get_ro),
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DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host),
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DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host),
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/* SDHCI registers accessors */
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DEVMETHOD(sdhci_read_1, sdhci_acpi_read_1),
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DEVMETHOD(sdhci_read_2, sdhci_acpi_read_2),
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DEVMETHOD(sdhci_read_4, sdhci_acpi_read_4),
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DEVMETHOD(sdhci_read_multi_4, sdhci_acpi_read_multi_4),
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DEVMETHOD(sdhci_write_1, sdhci_acpi_write_1),
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DEVMETHOD(sdhci_write_2, sdhci_acpi_write_2),
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DEVMETHOD(sdhci_write_4, sdhci_acpi_write_4),
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DEVMETHOD(sdhci_write_multi_4, sdhci_acpi_write_multi_4),
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DEVMETHOD_END
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};
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static driver_t sdhci_acpi_driver = {
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"sdhci_acpi",
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sdhci_methods,
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sizeof(struct sdhci_acpi_softc),
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};
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static devclass_t sdhci_acpi_devclass;
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DRIVER_MODULE(sdhci_acpi, acpi, sdhci_acpi_driver, sdhci_acpi_devclass, NULL,
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NULL);
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MODULE_DEPEND(sdhci_acpi, sdhci, 1, 1, 1);
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DRIVER_MODULE(mmc, sdhci_acpi, mmc_driver, mmc_devclass, NULL, NULL);
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MODULE_DEPEND(sdhci_acpi, mmc, 1, 1, 1);
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@ -332,6 +332,7 @@ SUBDIR= \
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scc \
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${_scsi_low} \
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sdhci \
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${_sdhci_acpi} \
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sdhci_pci \
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sem \
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send \
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@ -665,6 +666,7 @@ _padlock_rng= padlock_rng
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_rdrand_rng= rdrand_rng
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.endif
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_s3= s3
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_sdhci_acpi= sdhci_acpi
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_tpm= tpm
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_twa= twa
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_vesa= vesa
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8
sys/modules/sdhci_acpi/Makefile
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8
sys/modules/sdhci_acpi/Makefile
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# $FreeBSD$
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.PATH: ${.CURDIR}/../../dev/sdhci
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KMOD= sdhci_acpi
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SRCS= sdhci_acpi.c sdhci.h sdhci_if.h device_if.h bus_if.h pci_if.h mmcbr_if.h
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.include <bsd.kmod.mk>
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