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freebsd-skq/sys/dev/sdhci/sdhci_acpi.c
Marius Strobl 7fcf47802a - Check the slot type capability, set SDHCI_SLOT_{EMBEDDED,NON_REMOVABLE} 
for embedded slots. Fail in the sdhci(4) initialization for slot type
  shared, which is completely unsupported by this driver at the moment. [1]
  For Intel eMMC controllers, taking the embedded slot type into account
  obsoltes setting SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE so remove these quirk
  entries.
- Hide the 1.8 V VDD capability when the slot is detected as non-embedded,
  as the SDHCI specification explicitly states that 1.8 V VDD is applicable
  to embedded slots only. [2]
- Define some easy bits of the SDHCI specification v4.20. [3]
- Don't leak bus_dma(9) resources in failure paths of sdhci_init_slot().

Obtained from:	DragonFlyBSD 65704a46 [1], 7ba10b88 [2], 0df14648 [3]
2017-07-26 22:04:23 +00:00

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/*-
* Copyright (c) 2017 Oleksandr Tymoshenko <gonzo@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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <sys/rman.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <contrib/dev/acpica/include/acpi.h>
#include <dev/acpica/acpivar.h>
#include <dev/mmc/bridge.h>
#include <dev/sdhci/sdhci.h>
#include "mmcbr_if.h"
#include "sdhci_if.h"
static const struct sdhci_acpi_device {
const char* hid;
int uid;
const char *desc;
u_int quirks;
} sdhci_acpi_devices[] = {
{ "80860F14", 1, "Intel Bay Trail/Braswell eMMC 4.5/4.5.1 Controller",
SDHCI_QUIRK_INTEL_POWER_UP_RESET |
SDHCI_QUIRK_WAIT_WHILE_BUSY |
SDHCI_QUIRK_MMC_DDR52 |
SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 |
SDHCI_QUIRK_PRESET_VALUE_BROKEN },
{ "80860F14", 3, "Intel Bay Trail/Braswell SDXC Controller",
SDHCI_QUIRK_WAIT_WHILE_BUSY |
SDHCI_QUIRK_PRESET_VALUE_BROKEN },
{ "80860F16", 0, "Intel Bay Trail/Braswell SDXC Controller",
SDHCI_QUIRK_WAIT_WHILE_BUSY |
SDHCI_QUIRK_PRESET_VALUE_BROKEN },
{ "80865ACA", 0, "Intel Apollo Lake SDXC Controller",
SDHCI_QUIRK_BROKEN_DMA | /* APL18 erratum */
SDHCI_QUIRK_WAIT_WHILE_BUSY |
SDHCI_QUIRK_PRESET_VALUE_BROKEN },
{ "80865ACC", 0, "Intel Apollo Lake eMMC 5.0 Controller",
SDHCI_QUIRK_BROKEN_DMA | /* APL18 erratum */
SDHCI_QUIRK_INTEL_POWER_UP_RESET |
SDHCI_QUIRK_WAIT_WHILE_BUSY |
SDHCI_QUIRK_MMC_DDR52 |
SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 |
SDHCI_QUIRK_PRESET_VALUE_BROKEN },
{ NULL, 0, NULL, 0}
};
static char *sdhci_ids[] = {
"80860F14",
"80860F16",
"80865ACA",
"80865ACC",
NULL
};
struct sdhci_acpi_softc {
u_int quirks; /* Chip specific quirks */
struct resource *irq_res; /* IRQ resource */
void *intrhand; /* Interrupt handle */
struct sdhci_slot slot;
struct resource *mem_res; /* Memory resource */
};
static void sdhci_acpi_intr(void *arg);
static int sdhci_acpi_detach(device_t dev);
static uint8_t
sdhci_acpi_read_1(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res, 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return bus_read_1(sc->mem_res, off);
}
static void
sdhci_acpi_write_1(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint8_t val)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res, 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
bus_write_1(sc->mem_res, off, val);
}
static uint16_t
sdhci_acpi_read_2(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res, 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return bus_read_2(sc->mem_res, off);
}
static void
sdhci_acpi_write_2(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint16_t val)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res, 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
bus_write_2(sc->mem_res, off, val);
}
static uint32_t
sdhci_acpi_read_4(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res, 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return bus_read_4(sc->mem_res, off);
}
static void
sdhci_acpi_write_4(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint32_t val)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res, 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
bus_write_4(sc->mem_res, off, val);
}
static void
sdhci_acpi_read_multi_4(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint32_t *data, bus_size_t count)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
bus_read_multi_stream_4(sc->mem_res, off, data, count);
}
static void
sdhci_acpi_write_multi_4(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint32_t *data, bus_size_t count)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
bus_write_multi_stream_4(sc->mem_res, off, data, count);
}
static const struct sdhci_acpi_device *
sdhci_acpi_find_device(device_t dev)
{
const char *hid;
int i, uid;
ACPI_HANDLE handle;
ACPI_STATUS status;
hid = ACPI_ID_PROBE(device_get_parent(dev), dev, sdhci_ids);
if (hid == NULL)
return (NULL);
handle = acpi_get_handle(dev);
status = acpi_GetInteger(handle, "_UID", &uid);
if (ACPI_FAILURE(status))
uid = 0;
for (i = 0; sdhci_acpi_devices[i].hid != NULL; i++) {
if (strcmp(sdhci_acpi_devices[i].hid, hid) != 0)
continue;
if ((sdhci_acpi_devices[i].uid != 0) &&
(sdhci_acpi_devices[i].uid != uid))
continue;
return (&sdhci_acpi_devices[i]);
}
return (NULL);
}
static int
sdhci_acpi_probe(device_t dev)
{
const struct sdhci_acpi_device *acpi_dev;
acpi_dev = sdhci_acpi_find_device(dev);
if (acpi_dev == NULL)
return (ENXIO);
device_set_desc(dev, acpi_dev->desc);
return (BUS_PROBE_DEFAULT);
}
static int
sdhci_acpi_attach(device_t dev)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
int rid, err;
const struct sdhci_acpi_device *acpi_dev;
acpi_dev = sdhci_acpi_find_device(dev);
if (acpi_dev == NULL)
return (ENXIO);
sc->quirks = acpi_dev->quirks;
/* Allocate IRQ. */
rid = 0;
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (sc->irq_res == NULL) {
device_printf(dev, "can't allocate IRQ\n");
return (ENOMEM);
}
rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE);
if (sc->mem_res == NULL) {
device_printf(dev, "can't allocate memory resource for slot\n");
sdhci_acpi_detach(dev);
return (ENOMEM);
}
/* Intel Braswell eMMC 4.5.1 controller quirk */
if (strcmp(acpi_dev->hid, "80860F14") == 0 && acpi_dev->uid == 1 &&
SDHCI_READ_4(dev, &sc->slot, SDHCI_CAPABILITIES) == 0x446cc8b2 &&
SDHCI_READ_4(dev, &sc->slot, SDHCI_CAPABILITIES2) == 0x00000807)
sc->quirks |= SDHCI_QUIRK_DATA_TIMEOUT_1MHZ;
sc->quirks &= ~sdhci_quirk_clear;
sc->quirks |= sdhci_quirk_set;
sc->slot.quirks = sc->quirks;
err = sdhci_init_slot(dev, &sc->slot, 0);
if (err) {
device_printf(dev, "failed to init slot\n");
sdhci_acpi_detach(dev);
return (err);
}
/* Activate the interrupt */
err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
NULL, sdhci_acpi_intr, sc, &sc->intrhand);
if (err) {
device_printf(dev, "can't setup IRQ\n");
sdhci_acpi_detach(dev);
return (err);
}
/* Process cards detection. */
sdhci_start_slot(&sc->slot);
return (0);
}
static int
sdhci_acpi_detach(device_t dev)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
if (sc->intrhand)
bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
if (sc->irq_res)
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(sc->irq_res), sc->irq_res);
if (sc->mem_res) {
sdhci_cleanup_slot(&sc->slot);
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(sc->mem_res), sc->mem_res);
}
return (0);
}
static int
sdhci_acpi_shutdown(device_t dev)
{
return (0);
}
static int
sdhci_acpi_suspend(device_t dev)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
int err;
err = bus_generic_suspend(dev);
if (err)
return (err);
sdhci_generic_suspend(&sc->slot);
return (0);
}
static int
sdhci_acpi_resume(device_t dev)
{
struct sdhci_acpi_softc *sc = device_get_softc(dev);
int err;
sdhci_generic_resume(&sc->slot);
err = bus_generic_resume(dev);
if (err)
return (err);
return (0);
}
static void
sdhci_acpi_intr(void *arg)
{
struct sdhci_acpi_softc *sc = (struct sdhci_acpi_softc *)arg;
sdhci_generic_intr(&sc->slot);
}
static device_method_t sdhci_methods[] = {
/* device_if */
DEVMETHOD(device_probe, sdhci_acpi_probe),
DEVMETHOD(device_attach, sdhci_acpi_attach),
DEVMETHOD(device_detach, sdhci_acpi_detach),
DEVMETHOD(device_shutdown, sdhci_acpi_shutdown),
DEVMETHOD(device_suspend, sdhci_acpi_suspend),
DEVMETHOD(device_resume, sdhci_acpi_resume),
/* Bus interface */
DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar),
DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar),
/* mmcbr_if */
DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios),
DEVMETHOD(mmcbr_switch_vccq, sdhci_generic_switch_vccq),
DEVMETHOD(mmcbr_tune, sdhci_generic_tune),
DEVMETHOD(mmcbr_retune, sdhci_generic_retune),
DEVMETHOD(mmcbr_request, sdhci_generic_request),
DEVMETHOD(mmcbr_get_ro, sdhci_generic_get_ro),
DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host),
DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host),
/* SDHCI accessors */
DEVMETHOD(sdhci_read_1, sdhci_acpi_read_1),
DEVMETHOD(sdhci_read_2, sdhci_acpi_read_2),
DEVMETHOD(sdhci_read_4, sdhci_acpi_read_4),
DEVMETHOD(sdhci_read_multi_4, sdhci_acpi_read_multi_4),
DEVMETHOD(sdhci_write_1, sdhci_acpi_write_1),
DEVMETHOD(sdhci_write_2, sdhci_acpi_write_2),
DEVMETHOD(sdhci_write_4, sdhci_acpi_write_4),
DEVMETHOD(sdhci_write_multi_4, sdhci_acpi_write_multi_4),
DEVMETHOD(sdhci_set_uhs_timing, sdhci_generic_set_uhs_timing),
DEVMETHOD_END
};
static driver_t sdhci_acpi_driver = {
"sdhci_acpi",
sdhci_methods,
sizeof(struct sdhci_acpi_softc),
};
static devclass_t sdhci_acpi_devclass;
DRIVER_MODULE(sdhci_acpi, acpi, sdhci_acpi_driver, sdhci_acpi_devclass, NULL,
NULL);
MODULE_DEPEND(sdhci_acpi, sdhci, 1, 1, 1);
#ifndef MMCCAM
MMC_DECLARE_BRIDGE(sdhci_acpi);
#endif
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