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freebsd-skq/sys/dev/sdhci/sdhci_pci.c
marius e16f2fe291 - Unlike as in the PCI case, when attached to ACPI, Intel Bay Trail 
and Braswell eMMC and SDXC controllers share the same IDs. Like in
  the PCI case, Braswell eMMC needs the SDHCI_QUIRK_DATA_TIMEOUT_1MHZ
  quirk (see r311794 for the corresponding change to the sdhci(4) PCI
  PCI front-end), though. However, due to the shared ACPI IDs, this
  is trickier to do.
- Intel Apollo Lake eMMC and SDXC controllers are affected by the
  APL18 ("Using 32-bit Addressing Mode With SD/eMMC Controller May
  Lead to Unpredictable System Behavior") silicon bug [1]. When this
  erratum hits, typically both SDHCI and XHCI controllers wedge.
  According to Intel, using ADMA2 with 64-bit addressing and 96-bit
  descriptors serves as a workaround. Until such times when sdhci(4)
  has ADMA2 support, flag DMA as broken for affected interfaces.
  This turns out to work around the problem, too, at the cost of
  performance.
- In the sdhci(4) ACPI front-end, probe the Intel Apollo Lake eMMC
  and SDXC controllers, too.

1: http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/pentium-celeron-n-series-j-series-datasheet-spec-update.pdf
2017-05-14 21:33:01 +00:00

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/*-
* Copyright (c) 2008 Alexander Motin <mav@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 <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/mmc/bridge.h>
#include <dev/sdhci/sdhci.h>
#include "mmcbr_if.h"
#include "sdhci_if.h"
/*
* PCI registers
*/
#define PCI_SDHCI_IFPIO 0x00
#define PCI_SDHCI_IFDMA 0x01
#define PCI_SDHCI_IFVENDOR 0x02
#define PCI_SLOT_INFO 0x40 /* 8 bits */
#define PCI_SLOT_INFO_SLOTS(x) (((x >> 4) & 7) + 1)
#define PCI_SLOT_INFO_FIRST_BAR(x) ((x) & 7)
/*
* RICOH specific PCI registers
*/
#define SDHC_PCI_MODE_KEY 0xf9
#define SDHC_PCI_MODE 0x150
#define SDHC_PCI_MODE_SD20 0x10
#define SDHC_PCI_BASE_FREQ_KEY 0xfc
#define SDHC_PCI_BASE_FREQ 0xe1
static const struct sdhci_device {
uint32_t model;
uint16_t subvendor;
const char *desc;
u_int quirks;
} sdhci_devices[] = {
{ 0x08221180, 0xffff, "RICOH R5C822 SD",
SDHCI_QUIRK_FORCE_DMA },
{ 0xe8221180, 0xffff, "RICOH R5CE822 SD",
SDHCI_QUIRK_FORCE_DMA |
SDHCI_QUIRK_LOWER_FREQUENCY },
{ 0xe8231180, 0xffff, "RICOH R5CE823 SD",
SDHCI_QUIRK_LOWER_FREQUENCY },
{ 0x8034104c, 0xffff, "TI XX21/XX11 SD",
SDHCI_QUIRK_FORCE_DMA },
{ 0x05501524, 0xffff, "ENE CB712 SD",
SDHCI_QUIRK_BROKEN_TIMINGS },
{ 0x05511524, 0xffff, "ENE CB712 SD 2",
SDHCI_QUIRK_BROKEN_TIMINGS },
{ 0x07501524, 0xffff, "ENE CB714 SD",
SDHCI_QUIRK_RESET_ON_IOS |
SDHCI_QUIRK_BROKEN_TIMINGS },
{ 0x07511524, 0xffff, "ENE CB714 SD 2",
SDHCI_QUIRK_RESET_ON_IOS |
SDHCI_QUIRK_BROKEN_TIMINGS },
{ 0x410111ab, 0xffff, "Marvell CaFe SD",
SDHCI_QUIRK_INCR_TIMEOUT_CONTROL },
{ 0x2381197B, 0xffff, "JMicron JMB38X SD",
SDHCI_QUIRK_32BIT_DMA_SIZE |
SDHCI_QUIRK_RESET_AFTER_REQUEST },
{ 0x16bc14e4, 0xffff, "Broadcom BCM577xx SDXC/MMC Card Reader",
SDHCI_QUIRK_BCM577XX_400KHZ_CLKSRC },
{ 0x0f148086, 0xffff, "Intel Bay Trail eMMC 4.5 Controller",
SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE |
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},
{ 0x0f158086, 0xffff, "Intel Bay Trail SDXC Controller",
SDHCI_QUIRK_WAIT_WHILE_BUSY |
SDHCI_QUIRK_PRESET_VALUE_BROKEN },
{ 0x0f508086, 0xffff, "Intel Bay Trail eMMC 4.5 Controller",
SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE |
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 },
{ 0x22948086, 0xffff, "Intel Braswell eMMC 4.5.1 Controller",
SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE |
SDHCI_QUIRK_DATA_TIMEOUT_1MHZ |
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 },
{ 0x22968086, 0xffff, "Intel Braswell SDXC Controller",
SDHCI_QUIRK_WAIT_WHILE_BUSY |
SDHCI_QUIRK_PRESET_VALUE_BROKEN },
{ 0x5aca8086, 0xffff, "Intel Apollo Lake SDXC Controller",
SDHCI_QUIRK_BROKEN_DMA | /* APL18 erratum */
SDHCI_QUIRK_WAIT_WHILE_BUSY |
SDHCI_QUIRK_PRESET_VALUE_BROKEN },
{ 0x5acc8086, 0xffff, "Intel Apollo Lake eMMC 5.0 Controller",
SDHCI_QUIRK_BROKEN_DMA | /* APL18 erratum */
SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE |
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 },
{ 0, 0xffff, NULL,
0 }
};
struct sdhci_pci_softc {
u_int quirks; /* Chip specific quirks */
struct resource *irq_res; /* IRQ resource */
void *intrhand; /* Interrupt handle */
int num_slots; /* Number of slots on this controller */
struct sdhci_slot slots[6];
struct resource *mem_res[6]; /* Memory resource */
uint8_t cfg_freq; /* Saved frequency */
uint8_t cfg_mode; /* Saved mode */
};
static int sdhci_enable_msi = 1;
SYSCTL_INT(_hw_sdhci, OID_AUTO, enable_msi, CTLFLAG_RDTUN, &sdhci_enable_msi,
0, "Enable MSI interrupts");
static uint8_t
sdhci_pci_read_1(device_t dev, struct sdhci_slot *slot __unused, bus_size_t off)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res[slot->num], 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return bus_read_1(sc->mem_res[slot->num], off);
}
static void
sdhci_pci_write_1(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint8_t val)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res[slot->num], 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
bus_write_1(sc->mem_res[slot->num], off, val);
}
static uint16_t
sdhci_pci_read_2(device_t dev, struct sdhci_slot *slot __unused, bus_size_t off)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res[slot->num], 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return bus_read_2(sc->mem_res[slot->num], off);
}
static void
sdhci_pci_write_2(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint16_t val)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res[slot->num], 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
bus_write_2(sc->mem_res[slot->num], off, val);
}
static uint32_t
sdhci_pci_read_4(device_t dev, struct sdhci_slot *slot __unused, bus_size_t off)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res[slot->num], 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
return bus_read_4(sc->mem_res[slot->num], off);
}
static void
sdhci_pci_write_4(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint32_t val)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
bus_barrier(sc->mem_res[slot->num], 0, 0xFF,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
bus_write_4(sc->mem_res[slot->num], off, val);
}
static void
sdhci_pci_read_multi_4(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint32_t *data, bus_size_t count)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
bus_read_multi_stream_4(sc->mem_res[slot->num], off, data, count);
}
static void
sdhci_pci_write_multi_4(device_t dev, struct sdhci_slot *slot __unused,
bus_size_t off, uint32_t *data, bus_size_t count)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
bus_write_multi_stream_4(sc->mem_res[slot->num], off, data, count);
}
static void sdhci_pci_intr(void *arg);
static void
sdhci_lower_frequency(device_t dev)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
/*
* Enable SD2.0 mode.
* NB: for RICOH R5CE823, this changes the PCI device ID to 0xe822.
*/
pci_write_config(dev, SDHC_PCI_MODE_KEY, 0xfc, 1);
sc->cfg_mode = pci_read_config(dev, SDHC_PCI_MODE, 1);
pci_write_config(dev, SDHC_PCI_MODE, SDHC_PCI_MODE_SD20, 1);
pci_write_config(dev, SDHC_PCI_MODE_KEY, 0x00, 1);
/*
* Some SD/MMC cards don't work with the default base
* clock frequency of 200 MHz. Lower it to 50 MHz.
*/
pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x01, 1);
sc->cfg_freq = pci_read_config(dev, SDHC_PCI_BASE_FREQ, 1);
pci_write_config(dev, SDHC_PCI_BASE_FREQ, 50, 1);
pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x00, 1);
}
static void
sdhci_restore_frequency(device_t dev)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
/* Restore mode. */
pci_write_config(dev, SDHC_PCI_MODE_KEY, 0xfc, 1);
pci_write_config(dev, SDHC_PCI_MODE, sc->cfg_mode, 1);
pci_write_config(dev, SDHC_PCI_MODE_KEY, 0x00, 1);
/* Restore frequency. */
pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x01, 1);
pci_write_config(dev, SDHC_PCI_BASE_FREQ, sc->cfg_freq, 1);
pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x00, 1);
}
static int
sdhci_pci_probe(device_t dev)
{
uint32_t model;
uint16_t subvendor;
uint8_t class, subclass;
int i, result;
model = (uint32_t)pci_get_device(dev) << 16;
model |= (uint32_t)pci_get_vendor(dev) & 0x0000ffff;
subvendor = pci_get_subvendor(dev);
class = pci_get_class(dev);
subclass = pci_get_subclass(dev);
result = ENXIO;
for (i = 0; sdhci_devices[i].model != 0; i++) {
if (sdhci_devices[i].model == model &&
(sdhci_devices[i].subvendor == 0xffff ||
sdhci_devices[i].subvendor == subvendor)) {
device_set_desc(dev, sdhci_devices[i].desc);
result = BUS_PROBE_DEFAULT;
break;
}
}
if (result == ENXIO && class == PCIC_BASEPERIPH &&
subclass == PCIS_BASEPERIPH_SDHC) {
device_set_desc(dev, "Generic SD HCI");
result = BUS_PROBE_GENERIC;
}
return (result);
}
static int
sdhci_pci_attach(device_t dev)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
struct sdhci_slot *slot;
uint32_t model;
uint16_t subvendor;
int bar, err, rid, slots, i;
model = (uint32_t)pci_get_device(dev) << 16;
model |= (uint32_t)pci_get_vendor(dev) & 0x0000ffff;
subvendor = pci_get_subvendor(dev);
/* Apply chip specific quirks. */
for (i = 0; sdhci_devices[i].model != 0; i++) {
if (sdhci_devices[i].model == model &&
(sdhci_devices[i].subvendor == 0xffff ||
sdhci_devices[i].subvendor == subvendor)) {
sc->quirks = sdhci_devices[i].quirks;
break;
}
}
sc->quirks &= ~sdhci_quirk_clear;
sc->quirks |= sdhci_quirk_set;
/* Some controllers need to be bumped into the right mode. */
if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY)
sdhci_lower_frequency(dev);
/* Read slots info from PCI registers. */
slots = pci_read_config(dev, PCI_SLOT_INFO, 1);
bar = PCI_SLOT_INFO_FIRST_BAR(slots);
slots = PCI_SLOT_INFO_SLOTS(slots);
if (slots > 6 || bar > 5) {
device_printf(dev, "Incorrect slots information (%d, %d).\n",
slots, bar);
return (EINVAL);
}
/* Allocate IRQ. */
i = 1;
rid = 0;
if (sdhci_enable_msi != 0 && pci_alloc_msi(dev, &i) == 0)
rid = 1;
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE | (rid != 0 ? 0 : RF_SHAREABLE));
if (sc->irq_res == NULL) {
device_printf(dev, "Can't allocate IRQ\n");
pci_release_msi(dev);
return (ENOMEM);
}
/* Scan all slots. */
for (i = 0; i < slots; i++) {
slot = &sc->slots[sc->num_slots];
/* Allocate memory. */
rid = PCIR_BAR(bar + i);
sc->mem_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, RF_ACTIVE);
if (sc->mem_res[i] == NULL) {
device_printf(dev,
"Can't allocate memory for slot %d\n", i);
continue;
}
slot->quirks = sc->quirks;
if (sdhci_init_slot(dev, slot, i) != 0)
continue;
sc->num_slots++;
}
device_printf(dev, "%d slot(s) allocated\n", sc->num_slots);
/* Activate the interrupt */
err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
NULL, sdhci_pci_intr, sc, &sc->intrhand);
if (err)
device_printf(dev, "Can't setup IRQ\n");
pci_enable_busmaster(dev);
/* Process cards detection. */
for (i = 0; i < sc->num_slots; i++)
sdhci_start_slot(&sc->slots[i]);
return (0);
}
static int
sdhci_pci_detach(device_t dev)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
int i;
bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(sc->irq_res), sc->irq_res);
pci_release_msi(dev);
for (i = 0; i < sc->num_slots; i++) {
sdhci_cleanup_slot(&sc->slots[i]);
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(sc->mem_res[i]), sc->mem_res[i]);
}
if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY)
sdhci_restore_frequency(dev);
return (0);
}
static int
sdhci_pci_shutdown(device_t dev)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY)
sdhci_restore_frequency(dev);
return (0);
}
static int
sdhci_pci_suspend(device_t dev)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
int i, err;
err = bus_generic_suspend(dev);
if (err)
return (err);
for (i = 0; i < sc->num_slots; i++)
sdhci_generic_suspend(&sc->slots[i]);
return (0);
}
static int
sdhci_pci_resume(device_t dev)
{
struct sdhci_pci_softc *sc = device_get_softc(dev);
int i, err;
for (i = 0; i < sc->num_slots; i++)
sdhci_generic_resume(&sc->slots[i]);
err = bus_generic_resume(dev);
if (err)
return (err);
if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY)
sdhci_lower_frequency(dev);
return (0);
}
static void
sdhci_pci_intr(void *arg)
{
struct sdhci_pci_softc *sc = (struct sdhci_pci_softc *)arg;
int i;
for (i = 0; i < sc->num_slots; i++)
sdhci_generic_intr(&sc->slots[i]);
}
static device_method_t sdhci_methods[] = {
/* device_if */
DEVMETHOD(device_probe, sdhci_pci_probe),
DEVMETHOD(device_attach, sdhci_pci_attach),
DEVMETHOD(device_detach, sdhci_pci_detach),
DEVMETHOD(device_shutdown, sdhci_pci_shutdown),
DEVMETHOD(device_suspend, sdhci_pci_suspend),
DEVMETHOD(device_resume, sdhci_pci_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_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_pci_read_1),
DEVMETHOD(sdhci_read_2, sdhci_pci_read_2),
DEVMETHOD(sdhci_read_4, sdhci_pci_read_4),
DEVMETHOD(sdhci_read_multi_4, sdhci_pci_read_multi_4),
DEVMETHOD(sdhci_write_1, sdhci_pci_write_1),
DEVMETHOD(sdhci_write_2, sdhci_pci_write_2),
DEVMETHOD(sdhci_write_4, sdhci_pci_write_4),
DEVMETHOD(sdhci_write_multi_4, sdhci_pci_write_multi_4),
DEVMETHOD(sdhci_set_uhs_timing, sdhci_generic_set_uhs_timing),
DEVMETHOD_END
};
static driver_t sdhci_pci_driver = {
"sdhci_pci",
sdhci_methods,
sizeof(struct sdhci_pci_softc),
};
static devclass_t sdhci_pci_devclass;
DRIVER_MODULE(sdhci_pci, pci, sdhci_pci_driver, sdhci_pci_devclass, NULL,
NULL);
MODULE_DEPEND(sdhci_pci, sdhci, 1, 1, 1);
MMC_DECLARE_BRIDGE(sdhci_pci);
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