From: Stephen Warren swarren@nvidia.com
This adds a sandbox mailbox implementation (provider), a test client device, instantiates them both from Sandbox's DT, and adds a DM test that excercises everything.
Signed-off-by: Stephen Warren swarren@nvidia.com Acked-by: Simon Glass sjg@chromium.org # v1 --- v2: * Share SANDBOX_MBOX_PING_XOR via header file. * Add include guards to header file. * Use UCLASS_MISC not UCLASS_TEST since the latter seems to have some semantics associated with it not desired for this test. --- arch/sandbox/dts/test.dts | 11 ++++ arch/sandbox/include/asm/mbox.h | 21 ++++++++ configs/sandbox_defconfig | 3 ++ drivers/mailbox/Kconfig | 7 +++ drivers/mailbox/Makefile | 2 + drivers/mailbox/sandbox-mbox-test.c | 54 +++++++++++++++++++ drivers/mailbox/sandbox-mbox.c | 104 ++++++++++++++++++++++++++++++++++++ test/dm/Makefile | 1 + test/dm/mailbox.c | 31 +++++++++++ 9 files changed, 234 insertions(+) create mode 100644 arch/sandbox/include/asm/mbox.h create mode 100644 drivers/mailbox/sandbox-mbox-test.c create mode 100644 drivers/mailbox/sandbox-mbox.c create mode 100644 test/dm/mailbox.c
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 89300096a5ab..686c215aea72 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -216,6 +216,17 @@ }; };
+ mbox: mbox { + compatible = "sandbox,mbox"; + #mbox-cells = <1>; + }; + + mbox-test { + compatible = "sandbox,mbox-test"; + mboxes = <&mbox 100>, <&mbox 1>; + mbox-names = "other", "test"; + }; + mmc { compatible = "sandbox,mmc"; }; diff --git a/arch/sandbox/include/asm/mbox.h b/arch/sandbox/include/asm/mbox.h new file mode 100644 index 000000000000..2d7b7d03e522 --- /dev/null +++ b/arch/sandbox/include/asm/mbox.h @@ -0,0 +1,21 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef __SANDBOX_MBOX_H +#define __SANDBOX_MBOX_H + +#include <common.h> + +#define SANDBOX_MBOX_PING_XOR 0x12345678 + +struct udevice; + +int sandbox_mbox_test_get(struct udevice *dev); +int sandbox_mbox_test_send(struct udevice *dev, uint32_t msg); +int sandbox_mbox_test_recv(struct udevice *dev, uint32_t *msg); +int sandbox_mbox_test_free(struct udevice *dev); + +#endif diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig index 9ad570c7fc49..8613da2c15f5 100644 --- a/configs/sandbox_defconfig +++ b/configs/sandbox_defconfig @@ -167,3 +167,6 @@ CONFIG_UNIT_TEST=y CONFIG_UT_TIME=y CONFIG_UT_DM=y CONFIG_UT_ENV=y +CONFIG_MISC=y +CONFIG_DM_MAILBOX=y +CONFIG_SANDBOX_MBOX=y diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index 8ae8edd28c52..9649b705895b 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -10,6 +10,13 @@ config DM_MAILBOX the basis of a variety of inter-process/inter-CPU communication protocols.
+config SANDBOX_MBOX + bool "Enable the sandbox mailbox test driver" + depends on DM_MAILBOX && SANDBOX + help + Enable support for a test mailbox implementation, which simply echos + back a modified version of any message that is sent. + config TEGRA_HSP bool "Enable Tegra HSP controller support" depends on DM_MAILBOX && TEGRA diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile index b5bc84032573..155dbeb09942 100644 --- a/drivers/mailbox/Makefile +++ b/drivers/mailbox/Makefile @@ -3,4 +3,6 @@ # SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_DM_MAILBOX) += mailbox-uclass.o +obj-$(CONFIG_SANDBOX_MBOX) += sandbox-mbox.o +obj-$(CONFIG_SANDBOX_MBOX) += sandbox-mbox-test.o obj-$(CONFIG_TEGRA_HSP) += tegra-hsp.o diff --git a/drivers/mailbox/sandbox-mbox-test.c b/drivers/mailbox/sandbox-mbox-test.c new file mode 100644 index 000000000000..02d161aada33 --- /dev/null +++ b/drivers/mailbox/sandbox-mbox-test.c @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <dm.h> +#include <mailbox_client.h> +#include <asm/io.h> + +struct sandbox_mbox_test { + struct mbox_chan chan; +}; + +int sandbox_mbox_test_get(struct udevice *dev) +{ + struct sandbox_mbox_test *sbmt = dev_get_priv(dev); + + return mbox_get_by_name(dev, "test", &sbmt->chan); +} + +int sandbox_mbox_test_send(struct udevice *dev, uint32_t msg) +{ + struct sandbox_mbox_test *sbmt = dev_get_priv(dev); + + return mbox_send(&sbmt->chan, &msg); +} + +int sandbox_mbox_test_recv(struct udevice *dev, uint32_t *msg) +{ + struct sandbox_mbox_test *sbmt = dev_get_priv(dev); + + return mbox_recv(&sbmt->chan, msg, 100); +} + +int sandbox_mbox_test_free(struct udevice *dev) +{ + struct sandbox_mbox_test *sbmt = dev_get_priv(dev); + + return mbox_free(&sbmt->chan); +} + +static const struct udevice_id sandbox_mbox_test_ids[] = { + { .compatible = "sandbox,mbox-test" }, + { } +}; + +U_BOOT_DRIVER(sandbox_mbox_test) = { + .name = "sandbox_mbox_test", + .id = UCLASS_MISC, + .of_match = sandbox_mbox_test_ids, + .priv_auto_alloc_size = sizeof(struct sandbox_mbox_test), +}; diff --git a/drivers/mailbox/sandbox-mbox.c b/drivers/mailbox/sandbox-mbox.c new file mode 100644 index 000000000000..1b7ac231cb7c --- /dev/null +++ b/drivers/mailbox/sandbox-mbox.c @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <dm.h> +#include <mailbox_uclass.h> +#include <asm/io.h> +#include <asm/mbox.h> + +#define SANDBOX_MBOX_CHANNELS 2 + +struct sandbox_mbox_chan { + bool rx_msg_valid; + uint32_t rx_msg; +}; + +struct sandbox_mbox { + struct sandbox_mbox_chan chans[SANDBOX_MBOX_CHANNELS]; +}; + +static int sandbox_mbox_request(struct mbox_chan *chan) +{ + debug("%s(chan=%p)\n", __func__, chan); + + if (chan->id >= SANDBOX_MBOX_CHANNELS) + return -EINVAL; + + return 0; +} + +static int sandbox_mbox_free(struct mbox_chan *chan) +{ + debug("%s(chan=%p)\n", __func__, chan); + + return 0; +} + +static int sandbox_mbox_send(struct mbox_chan *chan, const void *data) +{ + struct sandbox_mbox *sbm = dev_get_priv(chan->dev); + const uint32_t *pmsg = data; + + debug("%s(chan=%p, data=%p)\n", __func__, chan, data); + + sbm->chans[chan->id].rx_msg = *pmsg ^ SANDBOX_MBOX_PING_XOR; + sbm->chans[chan->id].rx_msg_valid = true; + + return 0; +} + +static int sandbox_mbox_recv(struct mbox_chan *chan, void *data) +{ + struct sandbox_mbox *sbm = dev_get_priv(chan->dev); + uint32_t *pmsg = data; + + debug("%s(chan=%p, data=%p)\n", __func__, chan, data); + + if (!sbm->chans[chan->id].rx_msg_valid) + return -ENODATA; + + *pmsg = sbm->chans[chan->id].rx_msg; + sbm->chans[chan->id].rx_msg_valid = false; + + return 0; +} + +static int sandbox_mbox_bind(struct udevice *dev) +{ + debug("%s(dev=%p)\n", __func__, dev); + + return 0; +} + +static int sandbox_mbox_probe(struct udevice *dev) +{ + debug("%s(dev=%p)\n", __func__, dev); + + return 0; +} + +static const struct udevice_id sandbox_mbox_ids[] = { + { .compatible = "sandbox,mbox" }, + { } +}; + +struct mbox_ops sandbox_mbox_mbox_ops = { + .request = sandbox_mbox_request, + .free = sandbox_mbox_free, + .send = sandbox_mbox_send, + .recv = sandbox_mbox_recv, +}; + +U_BOOT_DRIVER(sandbox_mbox) = { + .name = "sandbox_mbox", + .id = UCLASS_MAILBOX, + .of_match = sandbox_mbox_ids, + .bind = sandbox_mbox_bind, + .probe = sandbox_mbox_probe, + .priv_auto_alloc_size = sizeof(struct sandbox_mbox), + .ops = &sandbox_mbox_mbox_ops, +}; diff --git a/test/dm/Makefile b/test/dm/Makefile index fd781e82cfe8..9eaf04b9ba98 100644 --- a/test/dm/Makefile +++ b/test/dm/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_DM_ETH) += eth.o obj-$(CONFIG_DM_GPIO) += gpio.o obj-$(CONFIG_DM_I2C) += i2c.o obj-$(CONFIG_LED) += led.o +obj-$(CONFIG_DM_MAILBOX) += mailbox.o obj-$(CONFIG_DM_MMC) += mmc.o obj-$(CONFIG_DM_PCI) += pci.o obj-$(CONFIG_RAM) += ram.o diff --git a/test/dm/mailbox.c b/test/dm/mailbox.c new file mode 100644 index 000000000000..be7bd6de0600 --- /dev/null +++ b/test/dm/mailbox.c @@ -0,0 +1,31 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <dm.h> +#include <dm/test.h> +#include <asm/mbox.h> +#include <test/ut.h> + +static int dm_test_mailbox(struct unit_test_state *uts) +{ + struct udevice *dev; + uint32_t msg; + + ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "mbox-test", &dev)); + ut_assertok(sandbox_mbox_test_get(dev)); + + ut_asserteq(-ETIMEDOUT, sandbox_mbox_test_recv(dev, &msg)); + ut_assertok(sandbox_mbox_test_send(dev, 0xaaff9955UL)); + ut_assertok(sandbox_mbox_test_recv(dev, &msg)); + ut_asserteq(msg, 0xaaff9955UL ^ SANDBOX_MBOX_PING_XOR); + ut_asserteq(-ETIMEDOUT, sandbox_mbox_test_recv(dev, &msg)); + + ut_assertok(sandbox_mbox_test_free(dev)); + + return 0; +} +DM_TEST(dm_test_mailbox, DM_TESTF_SCAN_FDT);