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freebsd-dev/sys/dev/sdhci/sdhci_acpi.c
Marius Strobl ab00a509ee o Don't allocate resources for SDMA in sdhci(4) if the controller or the 
front-end doesn't support SDMA or the latter implements a platform-
  specific transfer method instead. While at it, factor out allocation
  and freeing of SDMA resources to sdhci_dma_{alloc,free}() in order to
  keep the code more readable when adding support for ADMA variants.

o Base the size of the SDMA bounce buffer on MAXPHYS up to the maximum
  of 512 KiB instead of using a fixed 4-KiB-buffer. With the default
  MAXPHYS of 128 KiB and depending on the controller and medium, this
  reduces the number of SDHCI interrupts by a factor of ~16 to ~32 on
  sequential reads while an increase of throughput of up to ~84 % was
  seen.

  Front-ends for broken controllers that only support an SDMA buffer
  boundary of a specific size may set SDHCI_QUIRK_BROKEN_SDMA_BOUNDARY
  and supply a size via struct sdhci_slot. According to Linux, only
  Qualcomm MSM-type SDHCI controllers are affected by this, though.

  Requested by: Shreyank Amartya (unconditional bump to 512 KiB)

o Introduce a SDHCI_DEPEND macro for specifying the dependency of the
  front-end modules on the sdhci(4) one and bump the module version
  of sdhci(4) to 2 via an also newly introduced SDHCI_VERSION in order
  to ensure that all components are in sync WRT struct sdhci_slot.

o In sdhci(4):
  - Make pointers const were applicable,
  - replace a few device_printf(9) calls with slot_printf() for
    consistency, and
  - sync some local functions with their prototypes WRT static.
2018-12-30 23:08:06 +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/mmc/mmcreg.h>
#include <dev/sdhci/sdhci.h>
#include "mmcbr_if.h"
#include "sdhci_if.h"
#define SDHCI_AMD_RESET_DLL_REG 0x908
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_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 },
{ "AMDI0040", 0, "AMD eMMC 5.0 Controller",
SDHCI_QUIRK_32BIT_DMA_SIZE |
SDHCI_QUIRK_MMC_HS400_IF_CAN_SDR104 },
{ NULL, 0, NULL, 0}
};
static char *sdhci_ids[] = {
"80860F14",
"80860F16",
"80865ACA",
"80865ACC",
"AMDI0040",
NULL
};
struct sdhci_acpi_softc {
struct sdhci_slot slot;
struct resource *mem_res; /* Memory resource */
struct resource *irq_res; /* IRQ resource */
void *intrhand; /* Interrupt handle */
const struct sdhci_acpi_device *acpi_dev;
};
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 void
sdhci_acpi_set_uhs_timing(device_t dev, struct sdhci_slot *slot)
{
const struct sdhci_acpi_softc *sc;
const struct sdhci_acpi_device *acpi_dev;
const struct mmc_ios *ios;
device_t bus;
uint16_t old_timing;
enum mmc_bus_timing timing;
bus = slot->bus;
old_timing = SDHCI_READ_2(bus, slot, SDHCI_HOST_CONTROL2);
old_timing &= SDHCI_CTRL2_UHS_MASK;
sdhci_generic_set_uhs_timing(dev, slot);
sc = device_get_softc(dev);
acpi_dev = sc->acpi_dev;
/*
* AMDI0040 controllers require SDHCI_CTRL2_SAMPLING_CLOCK to be
* disabled when switching from HS200 to high speed and to always
* be turned on again when tuning for HS400. In the later case,
* an AMD-specific DLL reset additionally is needed.
*/
if (strcmp(acpi_dev->hid, "AMDI0040") == 0 && acpi_dev->uid == 0) {
ios = &slot->host.ios;
timing = ios->timing;
if (old_timing == SDHCI_CTRL2_UHS_SDR104 &&
timing == bus_timing_hs)
SDHCI_WRITE_2(bus, slot, SDHCI_HOST_CONTROL2,
SDHCI_READ_2(bus, slot, SDHCI_HOST_CONTROL2) &
~SDHCI_CTRL2_SAMPLING_CLOCK);
if (ios->clock > SD_SDR50_MAX &&
old_timing != SDHCI_CTRL2_MMC_HS400 &&
timing == bus_timing_mmc_hs400) {
SDHCI_WRITE_2(bus, slot, SDHCI_HOST_CONTROL2,
SDHCI_READ_2(bus, slot, SDHCI_HOST_CONTROL2) |
SDHCI_CTRL2_SAMPLING_CLOCK);
SDHCI_WRITE_4(bus, slot, SDHCI_AMD_RESET_DLL_REG,
0x40003210);
DELAY(20);
SDHCI_WRITE_4(bus, slot, SDHCI_AMD_RESET_DLL_REG,
0x40033210);
}
}
}
static const struct sdhci_acpi_device *
sdhci_acpi_find_device(device_t dev)
{
char *hid;
int i, uid;
ACPI_HANDLE handle;
ACPI_STATUS status;
int rv;
rv = ACPI_ID_PROBE(device_get_parent(dev), dev, sdhci_ids, &hid);
if (rv > 0)
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;
u_int quirks;
const struct sdhci_acpi_device *acpi_dev;
acpi_dev = sdhci_acpi_find_device(dev);
if (acpi_dev == NULL)
return (ENXIO);
sc->acpi_dev = acpi_dev;
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 Bay Trail and Braswell eMMC controllers share the same IDs,
* but while with these former DDR52 is affected by the VLI54 erratum,
* these latter require the timeout clock to be hardcoded to 1 MHz.
*/
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)
quirks |= SDHCI_QUIRK_MMC_DDR52 | SDHCI_QUIRK_DATA_TIMEOUT_1MHZ;
quirks &= ~sdhci_quirk_clear;
quirks |= sdhci_quirk_set;
sc->slot.quirks = 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_acpi_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);
SDHCI_DEPEND(sdhci_acpi);
#ifndef MMCCAM
MMC_DECLARE_BRIDGE(sdhci_acpi);
#endif
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