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zynq: Add support for SDHCI devices

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This commit is contained in:
Kinsey Moore 2020-12-21 15:26:18 -06:00 committed by Joel Sherrill
parent 0ad342ae5f
commit 68e79b6d18
4 changed files with 375 additions and 0 deletions
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1
libbsd.py
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@ -226,6 +226,7 @@ class rtems(builder.Module):
'sys/dev/ffec/if_ffec_mcf548x.c',
'sys/dev/ffec/if_ffec_mpc8xx.c',
'sys/dev/input/touchscreen/tsc_lpc32xx.c',
'sys/dev/sdhci/arasan_sdhci.c',
'sys/dev/smc/if_smc_nexus.c',
'sys/dev/stmac/if_stmac.c',
'sys/dev/tsec/if_tsec_nexus.c',

3
rtemsbsd/include/bsp/nexus-devices.h
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@ -97,8 +97,11 @@ RTEMS_BSD_DRIVER_FEC;
#include <bsp/irq.h>
RTEMS_BSD_DRIVER_XILINX_ZYNQ_SLCR;
RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI0;
RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI1;
RTEMS_BSD_DRIVER_XILINX_ZYNQ_CGEM0(ZYNQ_IRQ_ETHERNET_0);
RTEMS_BSD_DRIVER_E1000PHY;
RTEMS_BSD_DRIVER_MMC;
#elif defined(LIBBSP_AARCH64_XILINX_ZYNQMP_BSP_H)

29
rtemsbsd/include/machine/rtems-bsd-nexus-bus.h
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@ -117,6 +117,35 @@ extern "C" {
&zy7_slcr_res[0])
#endif /* RTEMS_BSD_DRIVER_XILINX_ZYNQ_SLCR */
/*
* Xilinx Zynq Arasan SDIO Driver.
*/
#if !defined(RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI)
#define RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI(_num, _base, _irq) \
static const rtems_bsd_device_resource arasan_sdhci ## _num ## _res[] = { \
{ \
.type = RTEMS_BSD_RES_MEMORY, \
.start_request = 0, \
.start_actual = (_base) \
}, { \
.type = RTEMS_BSD_RES_IRQ, \
.start_request = 0, \
.start_actual = (_irq) \
} \
}; \
RTEMS_BSD_DEFINE_NEXUS_DEVICE(arasan_sdhci, _num, \
RTEMS_ARRAY_SIZE(arasan_sdhci ## _num ## _res), \
&arasan_sdhci ## _num ## _res[0])
#endif /* RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI */
#if !defined(RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI0)
#define RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI0 \
RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI(0, 0xE0100000, 56)
#endif /* RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI0 */
#if !defined(RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI1)
#define RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI1 \
RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI(1, 0xE0101000, 79)
#endif /* RTEMS_BSD_DRIVER_XILINX_ZYNQ_SDHCI1 */
/*
* LPC32XX Power Control (PWR).
*/

342
rtemsbsd/sys/dev/sdhci/arasan_sdhci.c Normal file
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@ -0,0 +1,342 @@
#include <machine/rtems-bsd-kernel-space.h>
/*-
* Copyright (c) 2019 Navigation Technology Associates Inc.
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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("$FreeBSD$");
/*
* SDHCI driver glue for Zynq 7000 SDHCI
*
*/
#include <rtems/bsd/local/opt_mmccam.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/bus.h>
#include <sys/callout.h>
#include <sys/kernel.h>
#include <sys/libkern.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <rtems/bsd/sys/resource.h>
#include <sys/rman.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <sys/time.h>
#include <machine/bus.h>
#include <machine/resource.h>
#ifdef __arm__
#include <machine/intr.h>
#endif
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/mmc/bridge.h>
#include <dev/sdhci/sdhci.h>
#include <rtems/bsd/local/mmcbr_if.h>
#include <rtems/bsd/local/sdhci_if.h>
struct arasan_sdhci_softc {
device_t dev;
struct resource * mem_res;
struct resource * irq_res;
void * intr_cookie;
struct sdhci_slot slot;
bool slot_init_done;
};
static inline uint16_t
RD2(struct arasan_sdhci_softc *sc, bus_size_t off)
{
return (bus_read_2(sc->mem_res, off));
}
static inline void
WR2(struct arasan_sdhci_softc *sc, bus_size_t off, uint16_t val)
{
bus_write_2(sc->mem_res, off, val);
}
static inline uint32_t
RD4(struct arasan_sdhci_softc *sc, bus_size_t off)
{
return (bus_read_4(sc->mem_res, off));
}
static inline void
WR4(struct arasan_sdhci_softc *sc, bus_size_t off, uint32_t val)
{
bus_write_4(sc->mem_res, off, val);
}
static uint8_t
arasan_sdhci_read_1(device_t dev, struct sdhci_slot *slot, bus_size_t off)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
return ((RD4(sc, off & ~3) >> (off & 3) * 8) & 0xff);
}
static uint16_t
arasan_sdhci_read_2(device_t dev, struct sdhci_slot *slot, bus_size_t off)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
return (RD2(sc, off));
}
static uint32_t
arasan_sdhci_read_4(device_t dev, struct sdhci_slot *slot, bus_size_t off)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
uint32_t val32, wrk32;
val32 = RD4(sc, off);
if (off == SDHCI_CAPABILITIES) {
val32 &= ~SDHCI_CAN_DO_8BITBUS;
return (val32);
}
return val32;
}
static void
arasan_sdhci_read_multi_4(device_t dev, struct sdhci_slot *slot, bus_size_t off,
uint32_t *data, bus_size_t count)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
bus_read_multi_4(sc->mem_res, off, data, count);
}
static void
arasan_sdhci_write_1(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint8_t val)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
uint32_t val32;
val32 = RD4(sc, off & ~3);
val32 &= ~(0xff << (off & 3) * 8);
val32 |= (val << (off & 3) * 8);
WR4(sc, off & ~3, val32);
}
static void
arasan_sdhci_write_2(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint16_t val)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
WR2(sc, off, val);
}
static void
arasan_sdhci_write_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint32_t val)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
WR4(sc, off, val);
}
static void
arasan_sdhci_write_multi_4(device_t dev, struct sdhci_slot *slot, bus_size_t off,
uint32_t *data, bus_size_t count)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
bus_write_multi_4(sc->mem_res, off, data, count);
}
static void
arasan_sdhci_intr(void *arg)
{
struct arasan_sdhci_softc *sc = arg;
sdhci_generic_intr(&sc->slot);
}
static int
arasan_sdhci_get_ro(device_t bus, device_t child)
{
struct arasan_sdhci_softc *sc = device_get_softc(bus);
return (RD4(sc, SDHCI_PRESENT_STATE) & SDHCI_WRITE_PROTECT);
}
static bool
arasan_sdhci_get_card_present(device_t dev, struct sdhci_slot *slot)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
return (RD4(sc, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
}
static int
arasan_sdhci_detach(device_t dev)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
if (sc->slot_init_done)
sdhci_cleanup_slot(&sc->slot);
if (sc->intr_cookie != NULL)
bus_teardown_intr(dev, sc->irq_res, sc->intr_cookie);
if (sc->irq_res != NULL)
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(sc->irq_res), sc->irq_res);
if (sc->mem_res != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(sc->mem_res), sc->mem_res);
}
return (0);
}
static int
arasan_sdhci_attach(device_t dev)
{
struct arasan_sdhci_softc *sc = device_get_softc(dev);
int rid, err;
sc->dev = dev;
rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (!sc->mem_res) {
device_printf(dev, "cannot allocate memory window\n");
err = ENXIO;
goto fail;
}
rid = 0;
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (!sc->irq_res) {
device_printf(dev, "cannot allocate interrupt\n");
err = ENXIO;
goto fail;
}
if (bus_setup_intr(dev, sc->irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
NULL, arasan_sdhci_intr, sc, &sc->intr_cookie)) {
device_printf(dev, "cannot setup interrupt handler\n");
err = ENXIO;
goto fail;
}
sc->slot.quirks |= SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK;
sc->slot.quirks |= SDHCI_QUIRK_BROKEN_AUTO_STOP;
/*
* DMA is not really broken, it just isn't implemented yet.
*/
sc->slot.quirks |= SDHCI_QUIRK_BROKEN_DMA;
sc->slot.max_clk = 50000000;
sdhci_init_slot(dev, &sc->slot, 0);
sc->slot_init_done = true;
bus_generic_probe(dev);
bus_generic_attach(dev);
sdhci_start_slot(&sc->slot);
return (0);
fail:
arasan_sdhci_detach(dev);
return (err);
}
static int
arasan_sdhci_probe(device_t dev)
{
device_set_desc(dev, "Zynq-7000 SDHCI");
return (0);
}
static device_method_t arasan_sdhci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, arasan_sdhci_probe),
DEVMETHOD(device_attach, arasan_sdhci_attach),
DEVMETHOD(device_detach, arasan_sdhci_detach),
/* Bus interface */
DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar),
DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar),
/* MMC bridge interface */
DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios),
DEVMETHOD(mmcbr_request, sdhci_generic_request),
DEVMETHOD(mmcbr_get_ro, arasan_sdhci_get_ro),
DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host),
DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host),
/* SDHCI accessors */
DEVMETHOD(sdhci_read_1, arasan_sdhci_read_1),
DEVMETHOD(sdhci_read_2, arasan_sdhci_read_2),
DEVMETHOD(sdhci_read_4, arasan_sdhci_read_4),
DEVMETHOD(sdhci_read_multi_4, arasan_sdhci_read_multi_4),
DEVMETHOD(sdhci_write_1, arasan_sdhci_write_1),
DEVMETHOD(sdhci_write_2, arasan_sdhci_write_2),
DEVMETHOD(sdhci_write_4, arasan_sdhci_write_4),
DEVMETHOD(sdhci_write_multi_4, arasan_sdhci_write_multi_4),
DEVMETHOD(sdhci_get_card_present,arasan_sdhci_get_card_present),
DEVMETHOD_END
};
static devclass_t arasan_sdhci_devclass;
static driver_t arasan_sdhci_driver = {
"arasan_sdhci",
arasan_sdhci_methods,
sizeof(struct arasan_sdhci_softc),
};
DRIVER_MODULE(arasan_sdhci, nexus, arasan_sdhci_driver, arasan_sdhci_devclass, 0, 0);
MODULE_DEPEND(arasan_sdhci, sdhci, 1, 1, 1);
#ifndef MMCCAM
MMC_DECLARE_BRIDGE(arasan_sdhci);
#endif