Add test infrastructure and tests for the AXI uclass. Signed-off-by: Mario Six <mario....@gdsys.cc> --- drivers/axi/Kconfig | 6 +++ drivers/axi/Makefile | 3 ++ drivers/axi/axi-emul-uclass.c | 68 ++++++++++++++++++++++++ drivers/axi/axi_sandbox.c | 61 ++++++++++++++++++++++ drivers/axi/sandbox_store.c | 118 ++++++++++++++++++++++++++++++++++++++++++ include/axi.h | 51 ++++++++++++++++++ include/dm/uclass-id.h | 1 + 7 files changed, 308 insertions(+) create mode 100644 drivers/axi/axi-emul-uclass.c create mode 100644 drivers/axi/axi_sandbox.c create mode 100644 drivers/axi/sandbox_store.c
diff --git a/drivers/axi/Kconfig b/drivers/axi/Kconfig index 19e1b7fd2f..a0333782cf 100644 --- a/drivers/axi/Kconfig +++ b/drivers/axi/Kconfig @@ -21,4 +21,10 @@ config IHS_AXI Support for IHS AXI bus on a gdsys IHS FPGA used to communicate with IP cores in the FPGA (e.g. video transmitter cores). +config AXI_SANDBOX + bool "Enable AXI sandbox driver" + depends on DM + help + Support the AXI emulation for the sandbox environment. + endif diff --git a/drivers/axi/Makefile b/drivers/axi/Makefile index 18d9380e9b..66b6c5a28f 100644 --- a/drivers/axi/Makefile +++ b/drivers/axi/Makefile @@ -7,3 +7,6 @@ obj-$(CONFIG_AXI) += axi-uclass.o obj-$(CONFIG_IHS_AXI) += ihs_axi.o +obj-$(CONFIG_SANDBOX) += axi-emul-uclass.o +obj-$(CONFIG_SANDBOX) += sandbox_store.o +obj-$(CONFIG_AXI_SANDBOX) += axi_sandbox.o diff --git a/drivers/axi/axi-emul-uclass.c b/drivers/axi/axi-emul-uclass.c new file mode 100644 index 0000000000..bf60c40518 --- /dev/null +++ b/drivers/axi/axi-emul-uclass.c @@ -0,0 +1,68 @@ +/* + * (C) Copyright 2018 + * Mario Six, Guntermann & Drunck GmbH, mario....@gdsys.cc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <axi.h> +#include <dm.h> +#include <dm/device-internal.h> + +int axi_sandbox_get_emul(struct udevice *bus, ulong address, enum axi_size_t size, + struct udevice **emulp) +{ + struct udevice *dev; + u32 reg[2]; + uint offset; + + switch (size) { + case AXI_SIZE_8: + offset = 1; + break; + case AXI_SIZE_16: + offset = 2; + break; + case AXI_SIZE_32: + offset = 4; + break; + default: + offset = 0; + } + + for (device_find_first_child(bus, &dev); + dev; + device_find_next_child(&dev)) { + int ret; + + ret = dev_read_u32_array(dev, "reg", reg, ARRAY_SIZE(reg)); + if (ret) + continue; + + if (address >= reg[0] && address <= reg[0] + reg[1] - offset) { + if (device_probe(dev)) + return -ENODEV; + + *emulp = dev; + return 0; + } + } + + return -ENODEV; +} + +int axi_get_store(struct udevice *dev, u8 **store) +{ + struct axi_emul_ops *ops = axi_emul_get_ops(dev); + + if (!ops->get_store) + return -ENOSYS; + + return ops->get_store(dev, store); +} + +UCLASS_DRIVER(axi_emul) = { + .id = UCLASS_AXI_EMUL, + .name = "axi_emul", +}; diff --git a/drivers/axi/axi_sandbox.c b/drivers/axi/axi_sandbox.c new file mode 100644 index 0000000000..b0f24bdd9d --- /dev/null +++ b/drivers/axi/axi_sandbox.c @@ -0,0 +1,61 @@ +/* + * (C) Copyright 2018 + * Mario Six, Guntermann & Drunck GmbH, mario....@gdsys.cc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <axi.h> +#include <dm.h> + +int axi_sandbox_read(struct udevice *bus, ulong address, void *data, + enum axi_size_t size) +{ + struct axi_emul_ops *ops; + struct udevice *emul; + int ret; + + ret = axi_sandbox_get_emul(bus, address, size, &emul); + if (ret) + return ret == -ENODEV ? 0 : ret; + ops = axi_emul_get_ops(emul); + if (!ops || !ops->read) + return -ENOSYS; + + return ops->read(emul, address, data, size); +} + +int axi_sandbox_write(struct udevice *bus, ulong address, void *data, + enum axi_size_t size) +{ + struct axi_emul_ops *ops; + struct udevice *emul; + int ret; + + ret = axi_sandbox_get_emul(bus, address, size, &emul); + if (ret) + return ret == -ENODEV ? 0 : ret; + ops = axi_emul_get_ops(emul); + if (!ops || !ops->write) + return -ENOSYS; + + return ops->write(emul, address, data, size); +} + +static const struct udevice_id axi_sandbox_ids[] = { + { .compatible = "sandbox,axi" }, + { /* sentinel */ } +}; + +static const struct axi_ops axi_sandbox_ops = { + .read = axi_sandbox_read, + .write = axi_sandbox_write, +}; + +U_BOOT_DRIVER(axi_sandbox_bus) = { + .name = "axi_sandbox_bus", + .id = UCLASS_AXI, + .of_match = axi_sandbox_ids, + .ops = &axi_sandbox_ops, +}; diff --git a/drivers/axi/sandbox_store.c b/drivers/axi/sandbox_store.c new file mode 100644 index 0000000000..059e612459 --- /dev/null +++ b/drivers/axi/sandbox_store.c @@ -0,0 +1,118 @@ +/* + * (C) Copyright 2018 + * Mario Six, Guntermann & Drunck GmbH, mario....@gdsys.cc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <axi.h> +#include <dm.h> +#include <asm/unaligned.h> + +struct sandbox_store_priv { + u8 *store; +}; + +int sandbox_store_read(struct udevice *dev, ulong address, void *data, + enum axi_size_t size) +{ + struct sandbox_store_priv *priv = dev_get_priv(dev); + u8 *p8 = data; + u16 *p16 = data; + u32 *p32 = data; + + switch (size) { + case AXI_SIZE_8: + *p8 = priv->store[address]; + break; + case AXI_SIZE_16: + *p16 = get_unaligned_be16(priv->store + address); + break; + case AXI_SIZE_32: + *p32 = get_unaligned_be32(priv->store + address); + break; + } + + return 0; +} + +int sandbox_store_write(struct udevice *dev, ulong address, void *data, + enum axi_size_t size) +{ + struct sandbox_store_priv *priv = dev_get_priv(dev); + u8 *p8 = data; + u16 *p16 = data; + u32 *p32 = data; + + switch (size) { + case AXI_SIZE_8: + priv->store[address] = *p8; + break; + case AXI_SIZE_16: + put_unaligned_be16(*p16, priv->store + address); + break; + case AXI_SIZE_32: + put_unaligned_be32(*p32, priv->store + address); + break; + } + + return 0; +} + +int sandbox_store_get_store(struct udevice *dev, u8 **store) +{ + struct sandbox_store_priv *priv = dev_get_priv(dev); + + *store = priv->store; + + return 0; +} + +static const struct udevice_id sandbox_store_ids[] = { + { .compatible = "sandbox,sandbox_store" }, + { /* sentinel */ } +}; + +static const struct axi_emul_ops sandbox_store_ops = { + .read = sandbox_store_read, + .write = sandbox_store_write, + .get_store = sandbox_store_get_store, +}; + +int sandbox_store_probe(struct udevice *dev) +{ + struct sandbox_store_priv *priv = dev_get_priv(dev); + u32 reg[2]; + int ret; + + ret = dev_read_u32_array(dev, "reg", reg, ARRAY_SIZE(reg)); + if (ret) + return -EINVAL; + + priv->store = calloc(reg[1], 1); + + if (!priv->store) + return -ENOMEM; + + return 0; +} + +int sandbox_store_remove(struct udevice *dev) +{ + struct sandbox_store_priv *priv = dev_get_priv(dev); + + free(priv->store); + + return 0; +} + +U_BOOT_DRIVER(sandbox_axi_store) = { + .name = "sandbox_axi_store", + .id = UCLASS_AXI_EMUL, + .of_match = sandbox_store_ids, + .ops = &sandbox_store_ops, + .priv_auto_alloc_size = sizeof(struct sandbox_store_priv), + .probe = sandbox_store_probe, + .remove = sandbox_store_remove, +}; diff --git a/include/axi.h b/include/axi.h index 317e931a6c..d0a3e09b9a 100644 --- a/include/axi.h +++ b/include/axi.h @@ -72,4 +72,55 @@ int axi_read(struct udevice *dev, ulong address, void *data, enum axi_size_t siz * @return 0 if OK, -ve on error. */ int axi_write(struct udevice *dev, ulong address, void *data, enum axi_size_t size); + +struct axi_emul_ops { + /** + * read() - Read a single value from a specified address on a AXI bus + * + * @dev: AXI bus to read from. + * @address: The address to read from. + * @data: Pointer to a variable that takes the data value read + * from the address on the AXI bus. + * @size: The size of the data to be read. + * @return 0 if OK, -ve on error. + */ + int (*read)(struct udevice *dev, ulong address, void *data, enum axi_size_t size); + + /** + * write() - Write a single value to a specified address on a AXI bus + * + * @dev: AXI bus to write to. + * @address: The address to write to. + * @data: Pointer to the data value to be written to the address + * on the AXI bus. + * @size: The size of the data to write. + * @return 0 if OK, -ve on error. + */ + int (*write)(struct udevice *dev, ulong address, void *data, enum axi_size_t size); + + /** + * get_store() - Get address of internal memory of a emulated AXI + * device + * + * @dev: Emulated AXI device to get the storage pointer for. + * @store: Pointer to the internal storage of the emulated AXI + * device. + * @return 0 if OK, -ve on error. + */ + int (*get_store)(struct udevice *dev, u8 **store); +}; + +#define axi_emul_get_ops(dev) ((struct axi_emul_ops *)(dev)->driver->ops) + +/** + * axi_get_store() - Get address of internal memory of a emulated AXI device + * + * @dev: Emulated AXI device to get the storage pointer for. + * @store: Pointer to the internal storage of the emulated AXI device. + * @return 0 if OK, -ve on error. + */ +int axi_get_store(struct udevice *dev, u8 **store); + +int axi_sandbox_get_emul(struct udevice *bus, ulong address, uint length, + struct udevice **emulp); #endif diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h index 9857796e54..04faebdde9 100644 --- a/include/dm/uclass-id.h +++ b/include/dm/uclass-id.h @@ -23,6 +23,7 @@ enum uclass_id { UCLASS_I2C_EMUL, /* sandbox I2C device emulator */ UCLASS_PCI_EMUL, /* sandbox PCI device emulator */ UCLASS_USB_EMUL, /* sandbox USB bus device emulator */ + UCLASS_AXI_EMUL, /* sandbox AXI bus device emulator */ UCLASS_SIMPLE_BUS, /* bus with child devices */ /* U-Boot uclasses start here - in alphabetical order */ -- 2.16.1 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot