2012-08-30 20:59:37 +00:00
|
|
|
/*-
|
2017-11-27 15:04:10 +00:00
|
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
|
|
*
|
2012-08-30 20:59:37 +00:00
|
|
|
* Copyright (c) 2012 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 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("$FreeBSD$");
|
|
|
|
|
|
|
|
#include <sys/param.h>
|
|
|
|
#include <sys/systm.h>
|
|
|
|
#include <sys/bus.h>
|
|
|
|
#include <sys/kernel.h>
|
2014-12-27 15:13:25 +00:00
|
|
|
#include <sys/lock.h>
|
2012-08-30 20:59:37 +00:00
|
|
|
#include <sys/module.h>
|
2014-12-27 15:13:25 +00:00
|
|
|
#include <sys/mutex.h>
|
2015-11-11 00:41:02 +00:00
|
|
|
#include <sys/sx.h>
|
2012-08-30 20:59:37 +00:00
|
|
|
#include <sys/rman.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
|
2020-07-28 11:32:45 +00:00
|
|
|
#include <arm/broadcom/bcm2835/bcm2835_firmware.h>
|
2012-08-30 20:59:37 +00:00
|
|
|
#include <arm/broadcom/bcm2835/bcm2835_mbox.h>
|
2015-03-20 14:16:39 +00:00
|
|
|
#include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
|
|
|
|
#include <arm/broadcom/bcm2835/bcm2835_vcbus.h>
|
2012-08-30 20:59:37 +00:00
|
|
|
|
2013-07-07 21:23:58 +00:00
|
|
|
#include "mbox_if.h"
|
|
|
|
|
2012-08-30 20:59:37 +00:00
|
|
|
#define REG_READ 0x00
|
|
|
|
#define REG_POL 0x10
|
|
|
|
#define REG_SENDER 0x14
|
|
|
|
#define REG_STATUS 0x18
|
|
|
|
#define STATUS_FULL 0x80000000
|
|
|
|
#define STATUS_EMPTY 0x40000000
|
|
|
|
#define REG_CONFIG 0x1C
|
|
|
|
#define CONFIG_DATA_IRQ 0x00000001
|
|
|
|
#define REG_WRITE 0x20 /* This is Mailbox 1 address */
|
|
|
|
|
|
|
|
#define MBOX_MSG(chan, data) (((data) & ~0xf) | ((chan) & 0xf))
|
|
|
|
#define MBOX_CHAN(msg) ((msg) & 0xf)
|
|
|
|
#define MBOX_DATA(msg) ((msg) & ~0xf)
|
|
|
|
|
2013-07-07 21:23:58 +00:00
|
|
|
#define MBOX_LOCK(sc) do { \
|
|
|
|
mtx_lock(&(sc)->lock); \
|
2012-08-30 20:59:37 +00:00
|
|
|
} while(0)
|
|
|
|
|
2013-07-07 21:23:58 +00:00
|
|
|
#define MBOX_UNLOCK(sc) do { \
|
|
|
|
mtx_unlock(&(sc)->lock); \
|
2012-08-30 20:59:37 +00:00
|
|
|
} while(0)
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
#define dprintf(fmt, args...) printf(fmt, ##args)
|
|
|
|
#else
|
|
|
|
#define dprintf(fmt, args...)
|
|
|
|
#endif
|
|
|
|
|
|
|
|
struct bcm_mbox_softc {
|
|
|
|
struct mtx lock;
|
|
|
|
struct resource * mem_res;
|
|
|
|
struct resource * irq_res;
|
|
|
|
void* intr_hl;
|
|
|
|
bus_space_tag_t bst;
|
|
|
|
bus_space_handle_t bsh;
|
|
|
|
int msg[BCM2835_MBOX_CHANS];
|
2015-11-08 03:34:19 +00:00
|
|
|
int have_message[BCM2835_MBOX_CHANS];
|
2015-11-11 00:41:02 +00:00
|
|
|
struct sx property_chan_lock;
|
2012-08-30 20:59:37 +00:00
|
|
|
};
|
|
|
|
|
2013-07-07 21:23:58 +00:00
|
|
|
#define mbox_read_4(sc, reg) \
|
|
|
|
bus_space_read_4((sc)->bst, (sc)->bsh, reg)
|
|
|
|
#define mbox_write_4(sc, reg, val) \
|
|
|
|
bus_space_write_4((sc)->bst, (sc)->bsh, reg, val)
|
2012-08-30 20:59:37 +00:00
|
|
|
|
2016-10-12 03:03:55 +00:00
|
|
|
static struct ofw_compat_data compat_data[] = {
|
|
|
|
{"broadcom,bcm2835-mbox", 1},
|
|
|
|
{"brcm,bcm2835-mbox", 1},
|
|
|
|
{NULL, 0}
|
|
|
|
};
|
|
|
|
|
2015-02-22 11:11:05 +00:00
|
|
|
static int
|
|
|
|
bcm_mbox_read_msg(struct bcm_mbox_softc *sc, int *ochan)
|
|
|
|
{
|
2017-12-25 04:48:39 +00:00
|
|
|
#ifdef DEBUG
|
2015-02-22 11:11:05 +00:00
|
|
|
uint32_t data;
|
2017-12-25 04:48:39 +00:00
|
|
|
#endif
|
2015-02-22 11:11:05 +00:00
|
|
|
uint32_t msg;
|
|
|
|
int chan;
|
|
|
|
|
|
|
|
msg = mbox_read_4(sc, REG_READ);
|
|
|
|
dprintf("bcm_mbox_intr: raw data %08x\n", msg);
|
|
|
|
chan = MBOX_CHAN(msg);
|
2017-12-25 04:48:39 +00:00
|
|
|
#ifdef DEBUG
|
2015-02-22 11:11:05 +00:00
|
|
|
data = MBOX_DATA(msg);
|
2017-12-25 04:48:39 +00:00
|
|
|
#endif
|
2015-02-22 11:11:05 +00:00
|
|
|
if (sc->msg[chan]) {
|
|
|
|
printf("bcm_mbox_intr: channel %d oveflow\n", chan);
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
dprintf("bcm_mbox_intr: chan %d, data %08x\n", chan, data);
|
|
|
|
sc->msg[chan] = msg;
|
|
|
|
|
|
|
|
if (ochan != NULL)
|
|
|
|
*ochan = chan;
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2012-08-30 20:59:37 +00:00
|
|
|
static void
|
|
|
|
bcm_mbox_intr(void *arg)
|
|
|
|
{
|
|
|
|
struct bcm_mbox_softc *sc = arg;
|
|
|
|
int chan;
|
|
|
|
|
2015-11-08 03:34:19 +00:00
|
|
|
MBOX_LOCK(sc);
|
2015-02-22 11:11:05 +00:00
|
|
|
while (!(mbox_read_4(sc, REG_STATUS) & STATUS_EMPTY))
|
2015-11-11 00:41:02 +00:00
|
|
|
if (bcm_mbox_read_msg(sc, &chan) == 0) {
|
|
|
|
sc->have_message[chan] = 1;
|
2015-11-08 03:34:19 +00:00
|
|
|
wakeup(&sc->have_message[chan]);
|
2015-11-11 00:41:02 +00:00
|
|
|
}
|
2015-11-08 03:34:19 +00:00
|
|
|
MBOX_UNLOCK(sc);
|
2012-08-30 20:59:37 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
bcm_mbox_probe(device_t dev)
|
|
|
|
{
|
|
|
|
|
2014-02-02 19:17:28 +00:00
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
|
|
return (ENXIO);
|
|
|
|
|
2016-10-12 03:03:55 +00:00
|
|
|
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
|
|
|
|
return (ENXIO);
|
|
|
|
|
|
|
|
device_set_desc(dev, "BCM2835 VideoCore Mailbox");
|
2012-08-30 20:59:37 +00:00
|
|
|
|
2016-10-12 03:03:55 +00:00
|
|
|
return (BUS_PROBE_DEFAULT);
|
2012-08-30 20:59:37 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
bcm_mbox_attach(device_t dev)
|
|
|
|
{
|
|
|
|
struct bcm_mbox_softc *sc = device_get_softc(dev);
|
|
|
|
int i;
|
|
|
|
int rid = 0;
|
|
|
|
|
|
|
|
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
|
|
|
|
if (sc->mem_res == NULL) {
|
|
|
|
device_printf(dev, "could not allocate memory resource\n");
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
sc->bst = rman_get_bustag(sc->mem_res);
|
|
|
|
sc->bsh = rman_get_bushandle(sc->mem_res);
|
|
|
|
|
|
|
|
rid = 0;
|
|
|
|
sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
|
|
|
|
if (sc->irq_res == NULL) {
|
|
|
|
device_printf(dev, "could not allocate interrupt resource\n");
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Setup and enable the timer */
|
2013-07-01 06:33:35 +00:00
|
|
|
if (bus_setup_intr(dev, sc->irq_res, INTR_MPSAFE | INTR_TYPE_MISC,
|
|
|
|
NULL, bcm_mbox_intr, sc, &sc->intr_hl) != 0) {
|
|
|
|
bus_release_resource(dev, SYS_RES_IRQ, rid, sc->irq_res);
|
2012-08-30 20:59:37 +00:00
|
|
|
device_printf(dev, "Unable to setup the clock irq handler.\n");
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
|
2014-02-14 11:18:15 +00:00
|
|
|
mtx_init(&sc->lock, "vcio mbox", NULL, MTX_DEF);
|
2012-08-30 20:59:37 +00:00
|
|
|
for (i = 0; i < BCM2835_MBOX_CHANS; i++) {
|
2014-12-20 19:15:10 +00:00
|
|
|
sc->msg[i] = 0;
|
2015-11-08 03:34:19 +00:00
|
|
|
sc->have_message[i] = 0;
|
2012-08-30 20:59:37 +00:00
|
|
|
}
|
|
|
|
|
2015-11-11 00:41:02 +00:00
|
|
|
sx_init(&sc->property_chan_lock, "mboxprop");
|
|
|
|
|
2012-08-30 20:59:37 +00:00
|
|
|
/* Read all pending messages */
|
2014-12-27 13:52:33 +00:00
|
|
|
while ((mbox_read_4(sc, REG_STATUS) & STATUS_EMPTY) == 0)
|
|
|
|
(void)mbox_read_4(sc, REG_READ);
|
2012-08-30 20:59:37 +00:00
|
|
|
|
2013-07-07 21:23:58 +00:00
|
|
|
mbox_write_4(sc, REG_CONFIG, CONFIG_DATA_IRQ);
|
2012-08-30 20:59:37 +00:00
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Mailbox API
|
|
|
|
*/
|
2013-07-07 21:23:58 +00:00
|
|
|
static int
|
|
|
|
bcm_mbox_write(device_t dev, int chan, uint32_t data)
|
2012-08-30 20:59:37 +00:00
|
|
|
{
|
2014-12-27 15:13:25 +00:00
|
|
|
int limit = 1000;
|
2013-07-07 21:23:58 +00:00
|
|
|
struct bcm_mbox_softc *sc = device_get_softc(dev);
|
2012-08-30 20:59:37 +00:00
|
|
|
|
|
|
|
dprintf("bcm_mbox_write: chan %d, data %08x\n", chan, data);
|
2013-07-07 21:23:58 +00:00
|
|
|
MBOX_LOCK(sc);
|
2015-11-08 03:34:19 +00:00
|
|
|
sc->have_message[chan] = 0;
|
2014-12-27 15:13:25 +00:00
|
|
|
while ((mbox_read_4(sc, REG_STATUS) & STATUS_FULL) && --limit)
|
|
|
|
DELAY(5);
|
2012-08-30 20:59:37 +00:00
|
|
|
if (limit == 0) {
|
|
|
|
printf("bcm_mbox_write: STATUS_FULL stuck");
|
2013-07-07 21:23:58 +00:00
|
|
|
MBOX_UNLOCK(sc);
|
2012-08-30 20:59:37 +00:00
|
|
|
return (EAGAIN);
|
|
|
|
}
|
2013-07-07 21:23:58 +00:00
|
|
|
mbox_write_4(sc, REG_WRITE, MBOX_MSG(chan, data));
|
|
|
|
MBOX_UNLOCK(sc);
|
2014-12-27 15:13:25 +00:00
|
|
|
|
2012-08-30 20:59:37 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2013-07-07 21:23:58 +00:00
|
|
|
static int
|
|
|
|
bcm_mbox_read(device_t dev, int chan, uint32_t *data)
|
2012-08-30 20:59:37 +00:00
|
|
|
{
|
2013-07-07 21:23:58 +00:00
|
|
|
struct bcm_mbox_softc *sc = device_get_softc(dev);
|
2015-02-22 11:11:05 +00:00
|
|
|
int err, read_chan;
|
2012-08-30 20:59:37 +00:00
|
|
|
|
|
|
|
dprintf("bcm_mbox_read: chan %d\n", chan);
|
2015-02-22 11:11:05 +00:00
|
|
|
|
|
|
|
err = 0;
|
2013-07-07 21:23:58 +00:00
|
|
|
MBOX_LOCK(sc);
|
2015-02-22 11:11:05 +00:00
|
|
|
if (!cold) {
|
2015-11-08 03:34:19 +00:00
|
|
|
if (sc->have_message[chan] == 0) {
|
|
|
|
if (mtx_sleep(&sc->have_message[chan], &sc->lock, 0,
|
|
|
|
"mbox", 10*hz) != 0) {
|
|
|
|
device_printf(dev, "timeout waiting for message on chan %d\n", chan);
|
|
|
|
err = ETIMEDOUT;
|
|
|
|
}
|
2015-02-22 11:11:05 +00:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
do {
|
|
|
|
/* Wait for a message */
|
|
|
|
while ((mbox_read_4(sc, REG_STATUS) & STATUS_EMPTY))
|
|
|
|
;
|
|
|
|
/* Read the message */
|
|
|
|
if (bcm_mbox_read_msg(sc, &read_chan) != 0) {
|
|
|
|
err = EINVAL;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
} while (read_chan != chan);
|
2014-12-20 19:15:10 +00:00
|
|
|
}
|
|
|
|
/*
|
|
|
|
* get data from intr handler, the same channel is never coming
|
|
|
|
* because of holding sc lock.
|
|
|
|
*/
|
|
|
|
*data = MBOX_DATA(sc->msg[chan]);
|
|
|
|
sc->msg[chan] = 0;
|
2015-11-08 03:34:19 +00:00
|
|
|
sc->have_message[chan] = 0;
|
2015-02-22 11:11:05 +00:00
|
|
|
out:
|
2013-07-07 21:23:58 +00:00
|
|
|
MBOX_UNLOCK(sc);
|
2012-08-30 20:59:37 +00:00
|
|
|
dprintf("bcm_mbox_read: chan %d, data %08x\n", chan, *data);
|
|
|
|
|
2015-02-22 11:11:05 +00:00
|
|
|
return (err);
|
2012-08-30 20:59:37 +00:00
|
|
|
}
|
2013-07-07 21:23:58 +00:00
|
|
|
|
|
|
|
static device_method_t bcm_mbox_methods[] = {
|
|
|
|
DEVMETHOD(device_probe, bcm_mbox_probe),
|
|
|
|
DEVMETHOD(device_attach, bcm_mbox_attach),
|
|
|
|
|
|
|
|
DEVMETHOD(mbox_read, bcm_mbox_read),
|
|
|
|
DEVMETHOD(mbox_write, bcm_mbox_write),
|
|
|
|
|
|
|
|
DEVMETHOD_END
|
|
|
|
};
|
|
|
|
|
|
|
|
static driver_t bcm_mbox_driver = {
|
|
|
|
"mbox",
|
|
|
|
bcm_mbox_methods,
|
|
|
|
sizeof(struct bcm_mbox_softc),
|
|
|
|
};
|
|
|
|
|
2022-05-09 21:26:44 +00:00
|
|
|
EARLY_DRIVER_MODULE(mbox, simplebus, bcm_mbox_driver, 0, 0,
|
2020-07-28 10:40:00 +00:00
|
|
|
BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LAST);
|
2015-03-20 14:16:39 +00:00
|
|
|
|
|
|
|
static void
|
|
|
|
bcm2835_mbox_dma_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
|
|
|
|
{
|
|
|
|
bus_addr_t *addr;
|
|
|
|
|
|
|
|
if (err)
|
|
|
|
return;
|
|
|
|
addr = (bus_addr_t *)arg;
|
2019-11-20 03:57:46 +00:00
|
|
|
*addr = ARMC_TO_VCBUS(segs[0].ds_addr);
|
2015-03-20 14:16:39 +00:00
|
|
|
}
|
|
|
|
|
2015-03-20 16:54:21 +00:00
|
|
|
static void *
|
|
|
|
bcm2835_mbox_init_dma(device_t dev, size_t len, bus_dma_tag_t *tag,
|
|
|
|
bus_dmamap_t *map, bus_addr_t *phys)
|
2015-03-20 14:16:39 +00:00
|
|
|
{
|
2015-03-20 16:54:21 +00:00
|
|
|
void *buf;
|
2015-03-20 14:16:39 +00:00
|
|
|
int err;
|
|
|
|
|
|
|
|
err = bus_dma_tag_create(bus_get_dma_tag(dev), 16, 0,
|
2019-11-20 03:57:46 +00:00
|
|
|
bcm283x_dmabus_peripheral_lowaddr(), BUS_SPACE_MAXADDR, NULL, NULL,
|
2015-03-20 16:54:21 +00:00
|
|
|
len, 1, len, 0, NULL, NULL, tag);
|
2015-03-20 14:16:39 +00:00
|
|
|
if (err != 0) {
|
|
|
|
device_printf(dev, "can't create DMA tag\n");
|
2015-03-20 16:54:21 +00:00
|
|
|
return (NULL);
|
2015-03-20 14:16:39 +00:00
|
|
|
}
|
|
|
|
|
2015-03-20 16:54:21 +00:00
|
|
|
err = bus_dmamem_alloc(*tag, &buf, 0, map);
|
2015-03-20 14:16:39 +00:00
|
|
|
if (err != 0) {
|
2015-03-20 16:54:21 +00:00
|
|
|
bus_dma_tag_destroy(*tag);
|
2015-03-20 14:16:39 +00:00
|
|
|
device_printf(dev, "can't allocate dmamem\n");
|
2015-03-20 16:54:21 +00:00
|
|
|
return (NULL);
|
2015-03-20 14:16:39 +00:00
|
|
|
}
|
|
|
|
|
2015-04-27 01:36:16 +00:00
|
|
|
err = bus_dmamap_load(*tag, *map, buf, len, bcm2835_mbox_dma_cb,
|
2015-03-20 16:54:21 +00:00
|
|
|
phys, 0);
|
2015-03-20 14:16:39 +00:00
|
|
|
if (err != 0) {
|
2015-03-20 16:54:21 +00:00
|
|
|
bus_dmamem_free(*tag, buf, *map);
|
|
|
|
bus_dma_tag_destroy(*tag);
|
2015-03-20 14:16:39 +00:00
|
|
|
device_printf(dev, "can't load DMA map\n");
|
2015-03-20 16:54:21 +00:00
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (buf);
|
|
|
|
}
|
|
|
|
|
2015-05-02 22:24:33 +00:00
|
|
|
static int
|
|
|
|
bcm2835_mbox_err(device_t dev, bus_addr_t msg_phys, uint32_t resp_phys,
|
|
|
|
struct bcm2835_mbox_hdr *msg, size_t len)
|
|
|
|
{
|
|
|
|
int idx;
|
|
|
|
struct bcm2835_mbox_tag_hdr *tag;
|
|
|
|
uint8_t *last;
|
|
|
|
|
|
|
|
if ((uint32_t)msg_phys != resp_phys) {
|
|
|
|
device_printf(dev, "response channel mismatch\n");
|
|
|
|
return (EIO);
|
|
|
|
}
|
|
|
|
if (msg->code != BCM2835_MBOX_CODE_RESP_SUCCESS) {
|
|
|
|
device_printf(dev, "mbox response error\n");
|
|
|
|
return (EIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Loop until the end tag. */
|
|
|
|
tag = (struct bcm2835_mbox_tag_hdr *)(msg + 1);
|
|
|
|
last = (uint8_t *)msg + len;
|
|
|
|
for (idx = 0; tag->tag != 0; idx++) {
|
2020-07-28 11:32:45 +00:00
|
|
|
/*
|
|
|
|
* When setting the GPIO config or state the firmware doesn't
|
|
|
|
* set tag->val_len correctly.
|
|
|
|
*/
|
|
|
|
if ((tag->tag == BCM2835_FIRMWARE_TAG_SET_GPIO_CONFIG ||
|
|
|
|
tag->tag == BCM2835_FIRMWARE_TAG_SET_GPIO_STATE) &&
|
|
|
|
tag->val_len == 0) {
|
|
|
|
tag->val_len = BCM2835_MBOX_TAG_VAL_LEN_RESPONSE |
|
|
|
|
tag->val_buf_size;
|
|
|
|
}
|
2015-05-02 22:24:33 +00:00
|
|
|
if ((tag->val_len & BCM2835_MBOX_TAG_VAL_LEN_RESPONSE) == 0) {
|
|
|
|
device_printf(dev, "tag %d response error\n", idx);
|
|
|
|
return (EIO);
|
|
|
|
}
|
|
|
|
/* Clear the response bit. */
|
|
|
|
tag->val_len &= ~BCM2835_MBOX_TAG_VAL_LEN_RESPONSE;
|
|
|
|
|
|
|
|
/* Next tag. */
|
|
|
|
tag = (struct bcm2835_mbox_tag_hdr *)((uint8_t *)tag +
|
|
|
|
sizeof(*tag) + tag->val_buf_size);
|
|
|
|
|
|
|
|
if ((uint8_t *)tag > last) {
|
|
|
|
device_printf(dev, "mbox buffer size error\n");
|
|
|
|
return (EIO);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2015-03-20 16:54:21 +00:00
|
|
|
int
|
2015-11-05 03:46:54 +00:00
|
|
|
bcm2835_mbox_property(void *msg, size_t msg_size)
|
2015-03-20 16:54:21 +00:00
|
|
|
{
|
2015-11-11 00:41:02 +00:00
|
|
|
struct bcm_mbox_softc *sc;
|
2015-03-20 16:54:21 +00:00
|
|
|
bus_dma_tag_t msg_tag;
|
|
|
|
bus_dmamap_t msg_map;
|
|
|
|
bus_addr_t msg_phys;
|
2020-08-03 10:19:50 +00:00
|
|
|
char *buf;
|
2015-03-20 16:54:21 +00:00
|
|
|
uint32_t reg;
|
|
|
|
device_t mbox;
|
2015-11-05 03:46:54 +00:00
|
|
|
int err;
|
2015-03-20 16:54:21 +00:00
|
|
|
|
|
|
|
/* get mbox device */
|
|
|
|
mbox = devclass_get_device(devclass_find("mbox"), 0);
|
2015-11-05 03:46:54 +00:00
|
|
|
if (mbox == NULL)
|
2015-03-20 14:16:39 +00:00
|
|
|
return (ENXIO);
|
|
|
|
|
2015-11-11 00:41:02 +00:00
|
|
|
sc = device_get_softc(mbox);
|
|
|
|
sx_xlock(&sc->property_chan_lock);
|
|
|
|
|
2015-03-20 16:54:21 +00:00
|
|
|
/* Allocate memory for the message */
|
2015-11-05 03:46:54 +00:00
|
|
|
buf = bcm2835_mbox_init_dma(mbox, msg_size, &msg_tag, &msg_map,
|
2015-03-20 16:54:21 +00:00
|
|
|
&msg_phys);
|
2015-11-11 00:41:02 +00:00
|
|
|
if (buf == NULL) {
|
|
|
|
err = ENOMEM;
|
|
|
|
goto out;
|
|
|
|
}
|
2015-03-20 14:16:39 +00:00
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
memcpy(buf, msg, msg_size);
|
2015-03-20 14:16:39 +00:00
|
|
|
|
|
|
|
bus_dmamap_sync(msg_tag, msg_map,
|
2015-11-05 03:46:54 +00:00
|
|
|
BUS_DMASYNC_PREWRITE);
|
2015-03-20 14:16:39 +00:00
|
|
|
|
|
|
|
MBOX_WRITE(mbox, BCM2835_MBOX_CHAN_PROP, (uint32_t)msg_phys);
|
|
|
|
MBOX_READ(mbox, BCM2835_MBOX_CHAN_PROP, ®);
|
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
bus_dmamap_sync(msg_tag, msg_map,
|
|
|
|
BUS_DMASYNC_PREREAD);
|
|
|
|
|
|
|
|
memcpy(msg, buf, msg_size);
|
|
|
|
|
|
|
|
err = bcm2835_mbox_err(mbox, msg_phys, reg,
|
|
|
|
(struct bcm2835_mbox_hdr *)msg, msg_size);
|
|
|
|
|
2015-03-20 14:16:39 +00:00
|
|
|
bus_dmamap_unload(msg_tag, msg_map);
|
2015-11-05 03:46:54 +00:00
|
|
|
bus_dmamem_free(msg_tag, buf, msg_map);
|
2015-03-20 16:54:21 +00:00
|
|
|
bus_dma_tag_destroy(msg_tag);
|
2015-11-11 00:41:02 +00:00
|
|
|
out:
|
|
|
|
sx_xunlock(&sc->property_chan_lock);
|
2015-11-05 03:46:54 +00:00
|
|
|
return (err);
|
2015-03-20 16:54:21 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
2015-11-05 03:46:54 +00:00
|
|
|
bcm2835_mbox_set_power_state(uint32_t device_id, boolean_t on)
|
2015-03-20 16:54:21 +00:00
|
|
|
{
|
2015-11-05 03:46:54 +00:00
|
|
|
struct msg_set_power_state msg;
|
|
|
|
int err;
|
2015-03-20 16:54:21 +00:00
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
memset(&msg, 0, sizeof(msg));
|
|
|
|
msg.hdr.buf_size = sizeof(msg);
|
|
|
|
msg.hdr.code = BCM2835_MBOX_CODE_REQ;
|
|
|
|
msg.tag_hdr.tag = BCM2835_MBOX_TAG_SET_POWER_STATE;
|
|
|
|
msg.tag_hdr.val_buf_size = sizeof(msg.body);
|
|
|
|
msg.tag_hdr.val_len = sizeof(msg.body.req);
|
|
|
|
msg.body.req.device_id = device_id;
|
|
|
|
msg.body.req.state = (on ? BCM2835_MBOX_POWER_ON : 0) |
|
|
|
|
BCM2835_MBOX_POWER_WAIT;
|
|
|
|
msg.end_tag = 0;
|
2015-03-20 16:54:21 +00:00
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
err = bcm2835_mbox_property(&msg, sizeof(msg));
|
2015-03-20 14:16:39 +00:00
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
return (err);
|
2015-03-20 14:16:39 +00:00
|
|
|
}
|
2015-05-02 22:24:33 +00:00
|
|
|
|
2020-08-03 10:19:50 +00:00
|
|
|
int
|
|
|
|
bcm2835_mbox_notify_xhci_reset(uint32_t pci_dev_addr)
|
|
|
|
{
|
|
|
|
struct msg_notify_xhci_reset msg;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
memset(&msg, 0, sizeof(msg));
|
|
|
|
msg.hdr.buf_size = sizeof(msg);
|
|
|
|
msg.hdr.code = BCM2835_MBOX_CODE_REQ;
|
|
|
|
msg.tag_hdr.tag = BCM2835_MBOX_TAG_NOTIFY_XHCI_RESET;
|
|
|
|
msg.tag_hdr.val_buf_size = sizeof(msg.body);
|
|
|
|
msg.tag_hdr.val_len = sizeof(msg.body.req);
|
|
|
|
msg.body.req.pci_device_addr = pci_dev_addr;
|
|
|
|
msg.end_tag = 0;
|
|
|
|
|
|
|
|
err = bcm2835_mbox_property(&msg, sizeof(msg));
|
|
|
|
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2015-05-02 22:24:33 +00:00
|
|
|
int
|
2015-11-05 03:46:54 +00:00
|
|
|
bcm2835_mbox_get_clock_rate(uint32_t clock_id, uint32_t *hz)
|
2015-05-02 22:24:33 +00:00
|
|
|
{
|
2015-11-05 03:46:54 +00:00
|
|
|
struct msg_get_clock_rate msg;
|
2015-05-02 22:24:33 +00:00
|
|
|
int err;
|
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
memset(&msg, 0, sizeof(msg));
|
|
|
|
msg.hdr.buf_size = sizeof(msg);
|
|
|
|
msg.hdr.code = BCM2835_MBOX_CODE_REQ;
|
|
|
|
msg.tag_hdr.tag = BCM2835_MBOX_TAG_GET_CLOCK_RATE;
|
|
|
|
msg.tag_hdr.val_buf_size = sizeof(msg.body);
|
|
|
|
msg.tag_hdr.val_len = sizeof(msg.body.req);
|
|
|
|
msg.body.req.clock_id = clock_id;
|
|
|
|
msg.end_tag = 0;
|
2015-05-02 22:24:33 +00:00
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
err = bcm2835_mbox_property(&msg, sizeof(msg));
|
|
|
|
*hz = msg.body.resp.rate_hz;
|
2015-05-02 22:24:33 +00:00
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
return (err);
|
|
|
|
}
|
2015-05-02 22:24:33 +00:00
|
|
|
|
2015-11-05 03:46:54 +00:00
|
|
|
int
|
|
|
|
bcm2835_mbox_fb_get_w_h(struct bcm2835_fb_config *fb)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
struct msg_fb_get_w_h msg;
|
|
|
|
|
|
|
|
memset(&msg, 0, sizeof(msg));
|
|
|
|
msg.hdr.buf_size = sizeof(msg);
|
|
|
|
msg.hdr.code = BCM2835_MBOX_CODE_REQ;
|
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.physical_w_h, GET_PHYSICAL_W_H);
|
|
|
|
msg.physical_w_h.tag_hdr.val_len = 0;
|
|
|
|
msg.end_tag = 0;
|
|
|
|
|
|
|
|
err = bcm2835_mbox_property(&msg, sizeof(msg));
|
2015-05-02 22:24:33 +00:00
|
|
|
if (err == 0) {
|
2015-11-05 03:46:54 +00:00
|
|
|
fb->xres = msg.physical_w_h.body.resp.width;
|
|
|
|
fb->yres = msg.physical_w_h.body.resp.height;
|
2015-05-02 22:24:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2019-09-08 09:47:21 +00:00
|
|
|
int
|
|
|
|
bcm2835_mbox_fb_get_bpp(struct bcm2835_fb_config *fb)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
struct msg_fb_get_bpp msg;
|
2020-09-01 21:17:24 +00:00
|
|
|
|
2019-09-08 09:47:21 +00:00
|
|
|
memset(&msg, 0, sizeof(msg));
|
|
|
|
msg.hdr.buf_size = sizeof(msg);
|
|
|
|
msg.hdr.code = BCM2835_MBOX_CODE_REQ;
|
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.bpp, GET_DEPTH);
|
|
|
|
msg.bpp.tag_hdr.val_len = 0;
|
|
|
|
msg.end_tag = 0;
|
2020-09-01 21:17:24 +00:00
|
|
|
|
2019-09-08 09:47:21 +00:00
|
|
|
err = bcm2835_mbox_property(&msg, sizeof(msg));
|
|
|
|
if (err == 0)
|
|
|
|
fb->bpp = msg.bpp.body.resp.bpp;
|
2020-09-01 21:17:24 +00:00
|
|
|
|
2019-09-08 09:47:21 +00:00
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
2015-05-02 22:24:33 +00:00
|
|
|
int
|
2015-11-05 03:46:54 +00:00
|
|
|
bcm2835_mbox_fb_init(struct bcm2835_fb_config *fb)
|
2015-05-02 22:24:33 +00:00
|
|
|
{
|
|
|
|
int err;
|
2015-11-05 03:46:54 +00:00
|
|
|
struct msg_fb_setup msg;
|
|
|
|
|
|
|
|
memset(&msg, 0, sizeof(msg));
|
|
|
|
msg.hdr.buf_size = sizeof(msg);
|
|
|
|
msg.hdr.code = BCM2835_MBOX_CODE_REQ;
|
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.physical_w_h, SET_PHYSICAL_W_H);
|
|
|
|
msg.physical_w_h.body.req.width = fb->xres;
|
|
|
|
msg.physical_w_h.body.req.height = fb->yres;
|
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.virtual_w_h, SET_VIRTUAL_W_H);
|
|
|
|
msg.virtual_w_h.body.req.width = fb->vxres;
|
|
|
|
msg.virtual_w_h.body.req.height = fb->vyres;
|
2016-04-21 18:58:06 +00:00
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.offset, SET_VIRTUAL_OFFSET);
|
2015-11-05 03:46:54 +00:00
|
|
|
msg.offset.body.req.x = fb->xoffset;
|
|
|
|
msg.offset.body.req.y = fb->yoffset;
|
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.depth, SET_DEPTH);
|
|
|
|
msg.depth.body.req.bpp = fb->bpp;
|
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.alpha, SET_ALPHA_MODE);
|
|
|
|
msg.alpha.body.req.alpha = BCM2835_MBOX_ALPHA_MODE_IGNORED;
|
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.buffer, ALLOCATE_BUFFER);
|
|
|
|
msg.buffer.body.req.alignment = PAGE_SIZE;
|
|
|
|
BCM2835_MBOX_INIT_TAG(&msg.pitch, GET_PITCH);
|
|
|
|
msg.end_tag = 0;
|
|
|
|
|
|
|
|
err = bcm2835_mbox_property(&msg, sizeof(msg));
|
2015-05-02 22:24:33 +00:00
|
|
|
if (err == 0) {
|
2015-11-05 03:46:54 +00:00
|
|
|
fb->xres = msg.physical_w_h.body.resp.width;
|
|
|
|
fb->yres = msg.physical_w_h.body.resp.height;
|
|
|
|
fb->vxres = msg.virtual_w_h.body.resp.width;
|
|
|
|
fb->vyres = msg.virtual_w_h.body.resp.height;
|
|
|
|
fb->xoffset = msg.offset.body.resp.x;
|
|
|
|
fb->yoffset = msg.offset.body.resp.y;
|
|
|
|
fb->pitch = msg.pitch.body.resp.pitch;
|
2019-11-20 03:57:46 +00:00
|
|
|
fb->base = VCBUS_TO_ARMC(msg.buffer.body.resp.fb_address);
|
2015-11-05 03:46:54 +00:00
|
|
|
fb->size = msg.buffer.body.resp.fb_size;
|
2015-05-02 22:24:33 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return (err);
|
|
|
|
}
|