svn commit: r301409 - in head/sys: dev/bhnd/cores/chipc mips/broadcom
Landon J. Fuller
landonf at FreeBSD.org
Sat Jun 4 19:39:07 UTC 2016
Author: landonf
Date: Sat Jun 4 19:39:05 2016
New Revision: 301409
URL: https://svnweb.freebsd.org/changeset/base/301409
Log:
bhnd(4): Add support for chipc-attached flash
This adds support for serial (via SPI) and parallel (via CFI) flash
as found on BCM47xx/BCM53xx SoCs.
Submitted by: Michael Zhilin <mizhka at gmail.com>
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D6250
Added:
head/sys/dev/bhnd/cores/chipc/chipc_cfi.c (contents, props changed)
head/sys/dev/bhnd/cores/chipc/chipc_slicer.c (contents, props changed)
head/sys/dev/bhnd/cores/chipc/chipc_slicer.h (contents, props changed)
head/sys/dev/bhnd/cores/chipc/chipc_spi.c (contents, props changed)
head/sys/dev/bhnd/cores/chipc/chipc_spi.h (contents, props changed)
Modified:
head/sys/dev/bhnd/cores/chipc/bhnd_chipc_if.m
head/sys/dev/bhnd/cores/chipc/chipc.c
head/sys/mips/broadcom/uart_bus_chipc.c
Modified: head/sys/dev/bhnd/cores/chipc/bhnd_chipc_if.m
==============================================================================
--- head/sys/dev/bhnd/cores/chipc/bhnd_chipc_if.m Sat Jun 4 19:31:06 2016 (r301408)
+++ head/sys/dev/bhnd/cores/chipc/bhnd_chipc_if.m Sat Jun 4 19:39:05 2016 (r301409)
@@ -28,7 +28,6 @@
#include <sys/bus.h>
#include <dev/bhnd/bhnd.h>
-#include <dev/bhnd/nvram/bhnd_nvram.h>
INTERFACE bhnd_chipc;
@@ -37,6 +36,7 @@ INTERFACE bhnd_chipc;
#
HEADER {
+ #include <dev/bhnd/nvram/bhnd_nvram.h>
/* forward declarations */
struct chipc_caps;
struct chipc_caps *bhnd_chipc_generic_get_caps(device_t dev);
@@ -123,3 +123,12 @@ METHOD int enable_sprom {
METHOD void disable_sprom {
device_t dev;
}
+
+/**
+ * Return the flash configuration register value
+ *
+ * @param dev A bhnd(4) ChipCommon device
+ */
+METHOD uint32_t get_flash_cfg {
+ device_t dev;
+}
Modified: head/sys/dev/bhnd/cores/chipc/chipc.c
==============================================================================
--- head/sys/dev/bhnd/cores/chipc/chipc.c Sat Jun 4 19:31:06 2016 (r301408)
+++ head/sys/dev/bhnd/cores/chipc/chipc.c Sat Jun 4 19:39:05 2016 (r301409)
@@ -39,19 +39,36 @@ __FBSDID("$FreeBSD$");
* and bcma(4) interconnects, providing a common interface to chipset
* identification, bus enumeration, UARTs, clocks, watchdog interrupts, GPIO,
* flash, etc.
+ *
+ * The purpose of this driver is memory resource management for ChipCommon drivers
+ * like UART, PMU, flash. ChipCommon core has several memory regions.
+ *
+ * ChipCommon driver has memory resource manager. Driver
+ * gets information about BHND core ports/regions and map them
+ * into drivers' resources.
+ *
+ * Here is overview of mapping:
+ *
+ * ------------------------------------------------------
+ * | Port.Region| Purpose |
+ * ------------------------------------------------------
+ * | 0.0 | PMU, SPI(0x40), UART(0x300) |
+ * | 1.0 | ? |
+ * | 1.1 | MMIO flash (SPI & CFI) |
+ * ------------------------------------------------------
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/bus.h>
+#include <sys/rman.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <machine/bus.h>
-#include <sys/rman.h>
#include <machine/resource.h>
#include <dev/bhnd/bhnd.h>
@@ -99,6 +116,18 @@ static struct bhnd_device_quirk chipc_qu
};
+/*
+ * Here is resource configuration hints for child devices
+ *
+ * [Flash] There are 2 flash resources:
+ * - resource ID (rid) = 0: memory-mapped flash memory
+ * - resource ID (rid) = 1: memory-mapped flash registers (i.e for SPI)
+ *
+ * [UART] Uses IRQ and memory resources:
+ * - resource ID (rid) = 0: memory-mapped registers
+ * - IRQ resource ID (rid) = 0: shared IRQ line for Tx/Rx.
+ */
+
static const struct chipc_hint {
const char *name;
int unit;
@@ -1288,6 +1317,15 @@ chipc_get_caps(device_t dev)
return (&sc->caps);
}
+static uint32_t
+chipc_get_flash_cfg(device_t dev)
+{
+ struct chipc_softc *sc;
+
+ sc = device_get_softc(dev);
+ return (bhnd_bus_read_4(sc->core, CHIPC_FLASH_CFG));
+}
+
static device_method_t chipc_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, chipc_probe),
@@ -1330,11 +1368,13 @@ static device_method_t chipc_methods[] =
DEVMETHOD(bhnd_chipc_enable_sprom, chipc_enable_sprom_pins),
DEVMETHOD(bhnd_chipc_disable_sprom, chipc_disable_sprom_pins),
DEVMETHOD(bhnd_chipc_get_caps, chipc_get_caps),
+ DEVMETHOD(bhnd_chipc_get_flash_cfg, chipc_get_flash_cfg),
DEVMETHOD_END
};
DEFINE_CLASS_0(bhnd_chipc, chipc_driver, chipc_methods, sizeof(struct chipc_softc));
-DRIVER_MODULE(bhnd_chipc, bhnd, chipc_driver, bhnd_chipc_devclass, 0, 0);
+EARLY_DRIVER_MODULE(bhnd_chipc, bhnd, chipc_driver, bhnd_chipc_devclass, 0, 0,
+ BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE);
MODULE_DEPEND(bhnd_chipc, bhnd, 1, 1, 1);
MODULE_VERSION(bhnd_chipc, 1);
Added: head/sys/dev/bhnd/cores/chipc/chipc_cfi.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/bhnd/cores/chipc/chipc_cfi.c Sat Jun 4 19:39:05 2016 (r301409)
@@ -0,0 +1,141 @@
+/*-
+ * Copyright (c) 2016 Michael Zhilin <mizhka at gmail.com>
+ * 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,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ * redistribution must be conditioned upon including a substantially
+ * similar Disclaimer requirement for further binary redistribution.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+#include <sys/conf.h>
+
+#include <machine/bus.h>
+
+#include <dev/bhnd/bhnd_debug.h>
+#include <dev/cfi/cfi_var.h>
+
+#include "bhnd_chipc_if.h"
+#include "chipc_slicer.h"
+#include "chipcreg.h"
+#include "chipcvar.h"
+
+/*
+ * **************************** PROTOTYPES ****************************
+ */
+
+static void chipc_cfi_identify(driver_t *driver, device_t parent);
+static int chipc_cfi_probe(device_t dev);
+static int chipc_cfi_attach(device_t dev);
+
+/*
+ * **************************** IMPLEMENTATION ************************
+ */
+
+static void
+chipc_cfi_identify(driver_t *driver, device_t parent)
+{
+ struct chipc_caps *caps;
+
+ if (device_find_child(parent, cfi_driver_name, -1) != NULL)
+ return;
+
+ caps = BHND_CHIPC_GET_CAPS(parent);
+ if (caps == NULL)
+ return;
+
+ if (caps->flash_type != CHIPC_PFLASH_CFI)
+ return;
+
+ BUS_ADD_CHILD(parent, 0, cfi_driver_name, -1);
+ return;
+}
+
+static int
+chipc_cfi_probe(device_t dev)
+{
+ int error;
+ int enabled;
+ int byteswap;
+ uint32_t flash_config;
+ struct cfi_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ flash_config = BHND_CHIPC_GET_FLASH_CFG(device_get_parent(dev));
+
+ enabled = (flash_config & CHIPC_CF_EN);
+ byteswap = (flash_config & CHIPC_CF_BS);
+
+ if (enabled == 0)
+ device_disable(dev);
+
+ BHND_DEBUG_DEV(dev, "trying attach flash enabled=%d swapbytes=%d",
+ enabled, byteswap);
+
+ sc->sc_width = 0;
+ error = cfi_probe(dev);
+ if (error == 0)
+ device_set_desc(dev, "ChipCommon CFI");
+ return (error);
+}
+
+static int
+chipc_cfi_attach(device_t dev)
+{
+ int error;
+
+ error = cfi_attach(dev);
+ if (error)
+ return (error);
+
+ flash_register_slicer(chipc_slicer_cfi);
+ return (0);
+}
+
+static device_method_t chipc_cfi_methods[] = {
+ /* device interface */
+ DEVMETHOD(device_identify, chipc_cfi_identify),
+ DEVMETHOD(device_probe, chipc_cfi_probe),
+ DEVMETHOD(device_attach, chipc_cfi_attach),
+ DEVMETHOD(device_detach, cfi_detach),
+
+ {0, 0}
+};
+
+static driver_t chipc_cfi_driver = {
+ cfi_driver_name,
+ chipc_cfi_methods,
+ sizeof(struct cfi_softc),
+};
+
+DRIVER_MODULE(cfi, bhnd_chipc, chipc_cfi_driver, cfi_devclass, 0, 0);
+
Added: head/sys/dev/bhnd/cores/chipc/chipc_slicer.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/bhnd/cores/chipc/chipc_slicer.c Sat Jun 4 19:39:05 2016 (r301409)
@@ -0,0 +1,172 @@
+/*-
+ * Copyright (c) 2016 Michael Zhilin <mizhka at gmail.com>
+ * 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,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ * redistribution must be conditioned upon including a substantially
+ * similar Disclaimer requirement for further binary redistribution.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * Slicer is required to split firmware images into pieces.
+ * The first supported FW is TRX-based used by Asus routers
+ * TODO: add NetGear FW (CHK)
+ */
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/errno.h>
+#include <sys/rman.h>
+#include <sys/bus.h>
+#include <sys/systm.h>
+#include <sys/slicer.h>
+
+#include <machine/bus.h>
+
+#include <dev/bhnd/bhnd_debug.h>
+
+#include "chipc_slicer.h"
+
+#include <dev/cfi/cfi_var.h>
+#include "chipc_spi.h"
+
+static int chipc_slicer_walk(device_t dev, struct resource* res,
+ struct flash_slice *slices, int *nslices);
+
+int
+chipc_slicer_cfi(device_t dev, struct flash_slice *slices, int *nslices)
+{
+ struct cfi_softc *sc;
+
+ if (strcmp("cfi", device_get_name(dev)) != 0)
+ return (0);
+
+ sc = device_get_softc(dev);
+
+ return (chipc_slicer_walk(dev, sc->sc_res, slices, nslices));
+}
+
+int
+chipc_slicer_spi(device_t dev, struct flash_slice *slices, int *nslices)
+{
+ /* flash(mx25l) <- spibus <- chipc_spi */
+ device_t spibus;
+ device_t chipc_spi;
+ struct chipc_spi_softc *sc;
+
+ BHND_DEBUG_DEV(dev, "initting SPI slicer: %s", device_get_name(dev));
+
+ if (strcmp("mx25l", device_get_name(dev)) != 0)
+ return (EINVAL);
+
+ spibus = device_get_parent(dev);
+ if (spibus == NULL) {
+ BHND_ERROR_DEV(dev, "no found ChipCommon SPI BUS device");
+ return (EINVAL);
+ }
+
+ chipc_spi = device_get_parent(spibus);
+ if (chipc_spi == NULL) {
+ BHND_ERROR_DEV(spibus, "no found ChipCommon SPI device");
+ return (EINVAL);
+ }
+
+ sc = device_get_softc(chipc_spi);
+
+ return (chipc_slicer_walk(dev, sc->sc_res, slices, nslices));
+}
+
+/*
+ * Main processing part
+ */
+static int
+chipc_slicer_walk(device_t dev, struct resource* res,
+ struct flash_slice *slices, int *nslices)
+{
+ uint32_t fw_len;
+ uint32_t fs_ofs;
+ uint32_t val;
+ uint32_t ofs_trx;
+ int flash_size;
+
+ *nslices = 0;
+
+ flash_size = rman_get_size(res);
+ ofs_trx = flash_size;
+
+ BHND_TRACE_DEV(dev, "slicer: scanning memory [%x bytes] for headers...",
+ flash_size);
+
+ /* Find FW header in flash memory with step=128Kb (0x1000) */
+ for(uint32_t ofs = 0; ofs < flash_size; ofs+= 0x1000){
+ val = bus_read_4(res, ofs);
+ switch (val) {
+ case TRX_MAGIC:
+ /* check for second TRX */
+ if (ofs_trx < ofs) {
+ BHND_TRACE_DEV(dev, "stop on 2nd TRX: %x", ofs);
+ break;
+ }
+
+ BHND_TRACE("TRX found: %x", ofs);
+ ofs_trx = ofs;
+ /* read last offset of TRX header */
+ fs_ofs = bus_read_4(res, ofs + 24);
+ BHND_TRACE("FS offset: %x", fs_ofs);
+
+ /*
+ * GEOM IO will panic if offset is not aligned
+ * on sector size, i.e. 512 bytes
+ */
+ if (fs_ofs % 0x200 != 0) {
+ BHND_WARN("WARNING! filesystem offset should be"
+ " aligned on sector size (%d bytes)", 0x200);
+ BHND_WARN("ignoring TRX firmware image");
+ break;
+ }
+
+ slices[*nslices].base = ofs + fs_ofs;
+ //XXX: fully sized? any other partition?
+ fw_len = bus_read_4(res, ofs + 4);
+ slices[*nslices].size = fw_len - fs_ofs;
+ slices[*nslices].label = "rootfs";
+ *nslices += 1;
+ break;
+ case CFE_MAGIC:
+ BHND_TRACE("CFE found: %x", ofs);
+ break;
+ case NVRAM_MAGIC:
+ BHND_TRACE("NVRAM found: %x", ofs);
+ break;
+ default:
+ break;
+ }
+ }
+
+ BHND_TRACE("slicer: done");
+ return (0);
+}
Added: head/sys/dev/bhnd/cores/chipc/chipc_slicer.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/bhnd/cores/chipc/chipc_slicer.h Sat Jun 4 19:39:05 2016 (r301409)
@@ -0,0 +1,46 @@
+/*-
+ * Copyright (c) 2016 Michael Zhilin <mizhka at gmail.com>
+ * 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,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ * redistribution must be conditioned upon including a substantially
+ * similar Disclaimer requirement for further binary redistribution.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _BHND_CORES_CHIPC_CHIPC_SLICER_H_
+#define _BHND_CORES_CHIPC_CHIPC_SLICER_H_
+
+#include <sys/slicer.h>
+
+#define TRX_MAGIC 0x30524448
+#define CFE_MAGIC 0x43464531
+#define NVRAM_MAGIC 0x48534C46
+
+int chipc_slicer_spi(device_t dev, struct flash_slice *slices,
+ int *nslices);
+int chipc_slicer_cfi(device_t dev, struct flash_slice *slices,
+ int *nslices);
+
+#endif /* _BHND_CORES_CHIPC_CHIPC_SLICER_H_ */
Added: head/sys/dev/bhnd/cores/chipc/chipc_spi.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/bhnd/cores/chipc/chipc_spi.c Sat Jun 4 19:39:05 2016 (r301409)
@@ -0,0 +1,280 @@
+/*-
+ * Copyright (c) 2016 Michael Zhilin <mizhka at gmail.com>
+ * 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,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ * redistribution must be conditioned upon including a substantially
+ * similar Disclaimer requirement for further binary redistribution.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/errno.h>
+#include <sys/rman.h>
+#include <sys/bus.h>
+
+#include <machine/bus.h>
+
+#include <dev/bhnd/bhndvar.h>
+/*
+ * SPI BUS interface
+ */
+#include <dev/spibus/spi.h>
+
+#include "spibus_if.h"
+
+#include "chipcreg.h"
+#include "chipcvar.h"
+#include "chipc_spi.h"
+#include "bhnd_chipc_if.h"
+
+/*
+ * Flash slicer
+ */
+#include "chipc_slicer.h"
+
+/*
+ * **************************** PROTOTYPES ****************************
+ */
+
+static void chipc_spi_identify(driver_t *driver, device_t parent);
+static int chipc_spi_probe(device_t dev);
+static int chipc_spi_attach(device_t dev);
+static int chipc_spi_transfer(device_t dev, device_t child,
+ struct spi_command *cmd);
+static int chipc_spi_txrx(struct chipc_spi_softc *sc, uint8_t in,
+ uint8_t* out);
+static int chipc_spi_wait(struct chipc_spi_softc *sc);
+
+/*
+ * **************************** IMPLEMENTATION ************************
+ */
+
+static void
+chipc_spi_identify(driver_t *driver, device_t parent)
+{
+ struct chipc_caps *caps;
+ device_t spidev;
+ device_t spibus;
+ device_t flash;
+ char* flash_name;
+ int err;
+
+ flash_name = NULL;
+
+ if (device_find_child(parent, "spi", -1) != NULL)
+ return;
+
+ caps = BHND_CHIPC_GET_CAPS(parent);
+ if (caps == NULL) {
+ BHND_ERROR_DEV(parent, "can't retrieve ChipCommon capabilities");
+ return;
+ }
+
+ switch (caps->flash_type) {
+ case CHIPC_SFLASH_AT:
+ flash_name = "at45d";
+ break;
+ case CHIPC_SFLASH_ST:
+ flash_name = "mx25l";
+ break;
+ default:
+ return;
+ }
+
+ spidev = BUS_ADD_CHILD(parent, 0, "spi", -1);
+ if (spidev == NULL) {
+ BHND_ERROR_DEV(parent, "can't add chipc_spi to ChipCommon");
+ return;
+ }
+
+ err = device_probe_and_attach(spidev);
+ if (err) {
+ BHND_ERROR_DEV(spidev, "failed attach chipc_spi: %d", err);
+ return;
+ }
+
+ spibus = device_find_child(spidev, "spibus", -1);
+ if (spibus == NULL) {
+ BHND_ERROR_DEV(spidev, "can't find spibus under chipc_spi");
+ return;
+ }
+
+ flash = BUS_ADD_CHILD(spibus, 0, flash_name, -1);
+ if (flash == NULL) {
+ BHND_ERROR_DEV(spibus, "can't add %s to spibus", flash_name);
+ return;
+ }
+
+ err = device_probe_and_attach(flash);
+ if (err)
+ BHND_ERROR_DEV(flash, "failed attach flash %s: %d", flash_name,
+ err);
+
+ return;
+}
+
+static int
+chipc_spi_probe(device_t dev)
+{
+ device_set_desc(dev, "ChipCommon SPI");
+ return (BUS_PROBE_DEFAULT);
+}
+
+struct resource_spec spec_mem[] = {
+ {SYS_RES_MEMORY, 0, RF_ACTIVE},
+ {SYS_RES_MEMORY, 1, RF_ACTIVE},
+ { -1, -1, 0 }
+ };
+
+static int
+chipc_spi_attach(device_t dev)
+{
+ int err;
+ struct chipc_spi_softc *sc;
+ struct resource *mem[2];
+
+ sc = device_get_softc(dev);
+ err = bus_alloc_resources(dev, spec_mem, mem);
+ if (err != 0)
+ return (ENXIO);
+
+ sc->sc_res = mem[0];
+ sc->sc_mem_res = mem[1];
+
+ flash_register_slicer(chipc_slicer_spi);
+ device_add_child(dev, "spibus", 0);
+ return (bus_generic_attach(dev));
+}
+
+static int
+chipc_spi_wait(struct chipc_spi_softc *sc)
+{
+ int i;
+
+ for (i = CHIPC_SPI_MAXTRIES; i > 0; i--)
+ if (!(SPI_READ(sc, CHIPC_SPI_FLASHCTL) & CHIPC_SPI_FLASHCTL_START))
+ break;
+
+ if (i > 0)
+ return (0);
+
+ BHND_DEBUG_DEV(sc->dev, "busy");
+ return (-1);
+}
+
+static int
+chipc_spi_txrx(struct chipc_spi_softc *sc, uint8_t out, uint8_t* in)
+{
+ uint32_t ctl;
+
+ ctl = CHIPC_SPI_FLASHCTL_START | CHIPC_SPI_FLASHCTL_CSACTIVE | out;
+ SPI_BARRIER_WRITE(sc);
+ SPI_WRITE(sc, CHIPC_SPI_FLASHCTL, ctl);
+ SPI_BARRIER_WRITE(sc);
+
+ if (chipc_spi_wait(sc))
+ return (-1);
+
+ *in = SPI_READ(sc, CHIPC_SPI_FLASHDATA) & 0xff;
+ return (0);
+}
+
+static int
+chipc_spi_transfer(device_t dev, device_t child, struct spi_command *cmd)
+{
+ struct chipc_spi_softc *sc;
+ uint8_t *buf_in;
+ uint8_t *buf_out;
+ int i;
+
+ sc = device_get_softc(dev);
+ KASSERT(cmd->tx_cmd_sz == cmd->rx_cmd_sz,
+ ("TX/RX command sizes should be equal"));
+ KASSERT(cmd->tx_data_sz == cmd->rx_data_sz,
+ ("TX/RX data sizes should be equal"));
+
+ if (cmd->tx_cmd_sz == 0) {
+ BHND_DEBUG_DEV(child, "size of command is ZERO");
+ return (EIO);
+ }
+
+ SPI_BARRIER_WRITE(sc);
+ SPI_WRITE(sc, CHIPC_SPI_FLASHADDR, 0);
+ SPI_BARRIER_WRITE(sc);
+
+ /*
+ * Transfer command
+ */
+ buf_out = (uint8_t *)cmd->tx_cmd;
+ buf_in = (uint8_t *)cmd->rx_cmd;
+ for (i = 0; i < cmd->tx_cmd_sz; i++)
+ if (chipc_spi_txrx(sc, buf_out[i], &(buf_in[i])))
+ return (EIO);
+
+ /*
+ * Receive/transmit data
+ */
+ buf_out = (uint8_t *)cmd->tx_data;
+ buf_in = (uint8_t *)cmd->rx_data;
+ for (i = 0; i < cmd->tx_data_sz; i++)
+ if (chipc_spi_txrx(sc, buf_out[i], &(buf_in[i])))
+ return (EIO);
+
+ /*
+ * Clear CS bit and whole control register
+ */
+ SPI_BARRIER_WRITE(sc);
+ SPI_WRITE(sc, CHIPC_SPI_FLASHCTL, 0);
+ SPI_BARRIER_WRITE(sc);
+
+ return (0);
+}
+
+/*
+ * **************************** METADATA ************************
+ */
+static device_method_t chipc_spi_methods[] = {
+ DEVMETHOD(device_identify, chipc_spi_identify),
+ DEVMETHOD(device_probe, chipc_spi_probe),
+ DEVMETHOD(device_attach, chipc_spi_attach),
+ /* SPI */
+ DEVMETHOD(spibus_transfer, chipc_spi_transfer),
+ DEVMETHOD_END
+};
+
+static driver_t chipc_spi_driver = {
+ "spi",
+ chipc_spi_methods,
+ sizeof(struct chipc_spi_softc),
+};
+
+static devclass_t chipc_spi_devclass;
+
+DRIVER_MODULE(chipc_spi, bhnd_chipc, chipc_spi_driver, chipc_spi_devclass,
+ 0, 0);
Added: head/sys/dev/bhnd/cores/chipc/chipc_spi.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/bhnd/cores/chipc/chipc_spi.h Sat Jun 4 19:39:05 2016 (r301409)
@@ -0,0 +1,94 @@
+/*-
+ * Copyright (c) 2016 Michael Zhilin <mizhka at gmail.com>
+ * 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,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
+ * redistribution must be conditioned upon including a substantially
+ * similar Disclaimer requirement for further binary redistribution.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
+ */
+
+/*
+ * $FreeBSD$
+ */
+
+#ifndef _BHND_CORES_CHIPC_CHIPC_SPI_H_
+#define _BHND_CORES_CHIPC_CHIPC_SPI_H_
+
+#define CHIPC_SPI_MAXTRIES 1000
+
+#define CHIPC_SPI_ACTION_INPUT 1
+#define CHIPC_SPI_ACTION_OUTPUT 2
+
+#define CHIPC_SPI_FLASHCTL 0x00
+#define CHIPC_SPI_FLASHCTL_OPCODE 0x000000ff
+#define CHIPC_SPI_FLASHCTL_ACTION 0x00000700 //
+/*
+ * We don't use action at all. Experimentaly found, that
+ * action 0 - read current MISO byte to data register (interactive mode)
+ * action 1 = read 2nd byte to data register
+ * action 2 = read 4th byte to data register (surprise! see action 6)
+ * action 3 = read 5th byte to data register
+ * action 4 = read bytes 5-8 to data register in swapped order
+ * action 5 = read bytes 9-12 to data register in swapped order
+ * action 6 = read 3rd byte to data register
+ * action 7 = read bytes 6-9 to data register in swapped order
+ * It may be wrong if CS bit is 1.
+ * If CS bit is 1, you should write cmd / data to opcode byte-to-byte.
+ */
+#define CHIPC_SPI_FLASHCTL_CSACTIVE 0x00001000
+#define CHIPC_SPI_FLASHCTL_START 0x80000000 //same as BUSY
+#define CHIPC_SPI_FLASHCTL_BUSY 0x80000000 //same as BUSY
+#define CHIPC_SPI_FLASHADDR 0x04
+#define CHIPC_SPI_FLASHDATA 0x08
+
+struct chipc_spi_softc {
+ device_t dev;
+
+ /* SPI registers */
+ struct resource *sc_mem_res;
+
+ /* MMIO flash */
+ struct resource *sc_res;
+};
+
+/* register space access macros */
+#define SPI_BARRIER_WRITE(sc) bus_barrier((sc)->sc_mem_res, 0, 0, \
+ BUS_SPACE_BARRIER_WRITE)
+#define SPI_BARRIER_READ(sc) bus_barrier((sc)->sc_mem_res, 0, 0, \
+ BUS_SPACE_BARRIER_READ)
+#define SPI_BARRIER_RW(sc) bus_barrier((sc)->sc_mem_res, 0, 0, \
+ BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE)
+
+#define SPI_WRITE(sc, reg, val) do { \
+ bus_write_4(sc->sc_mem_res, (reg), (val)); \
+ } while (0)
+
+#define SPI_READ(sc, reg) bus_read_4(sc->sc_mem_res, (reg))
+
+#define SPI_SET_BITS(sc, reg, bits) \
+ SPI_WRITE(sc, reg, SPI_READ(sc, (reg)) | (bits))
+
+#define SPI_CLEAR_BITS(sc, reg, bits) \
+ SPI_WRITE(sc, reg, SPI_READ(sc, (reg)) & ~(bits))
+
+#endif /* _BHND_CORES_CHIPC_CHIPC_SPI_H_ */
Modified: head/sys/mips/broadcom/uart_bus_chipc.c
==============================================================================
--- head/sys/mips/broadcom/uart_bus_chipc.c Sat Jun 4 19:31:06 2016 (r301408)
+++ head/sys/mips/broadcom/uart_bus_chipc.c Sat Jun 4 19:39:05 2016 (r301409)
@@ -45,9 +45,12 @@ __FBSDID("$FreeBSD$");
#include <dev/uart/uart_bus.h>
#include <dev/uart/uart_cpu.h>
+#include <dev/bhnd/cores/chipc/chipcvar.h>
+
#include "uart_if.h"
#include "bhnd_chipc_if.h"
+
static int uart_chipc_probe(device_t dev);
extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs;
@@ -55,9 +58,18 @@ extern SLIST_HEAD(uart_devinfo_list, uar
static void
uart_chipc_identify(driver_t *driver, device_t parent)
{
- struct chipc_capabilities *caps;
+ struct chipc_caps *caps;
- caps = BHND_CHIPC_GET_CAPABILITIES(parent);
+ if (device_find_child(parent, "uart", -1) != NULL)
+ return;
+
+ caps = BHND_CHIPC_GET_CAPS(parent);
+
+ if (caps == NULL) {
+ device_printf(parent, "error: can't retrieve ChipCommon "
+ "capabilities\n");
+ return;
+ }
if (caps->num_uarts == 0)
return;
@@ -74,6 +86,7 @@ uart_chipc_probe(device_t dev)
struct uart_softc *sc;
struct resource *res;
int rid;
+ int err;
rid = 0;
res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
@@ -97,7 +110,11 @@ uart_chipc_probe(device_t dev)
sc->sc_bas.bst = sc->sc_sysdev->bas.bst;
sc->sc_bas.bsh = sc->sc_sysdev->bas.bsh;
- bus_release_resource(dev, SYS_RES_MEMORY, rid, res);
+ err = bus_release_resource(dev, SYS_RES_MEMORY, rid, res);
+ if (err) {
+ device_printf(dev, "can't release resource [%d]\n", rid);
+ return (ENXIO);
+ }
/* We use internal SoC clock generator with non-standart freq MHz */
return (uart_bus_probe(dev, 0, sc->sc_sysdev->bas.rclk, 0, 0));
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