[PATCH v3 08/17] hw/ssi/xilinx_spi: Make device endianness configurable

Replace the DEVICE_NATIVE_ENDIAN MemoryRegionOps by a pair of DEVICE_LITTLE_ENDIAN / DEVICE_BIG_ENDIAN. Add the "little-endian" property to select the device endianness, defaulting to little endian. Set the proper endianness on the single machine using the device. Reviewed-by: Richard Henderson <richard.henderson(a)linaro.org&gt; Signed-off-by: Philippe Mathieu-Daudé <philmd(a)linaro.org&gt; --- hw/arm/xlnx-zynqmp.c | 4 ++++ hw/ssi/xilinx_spi.c | 24 +++++++++++++++--------- 2 files changed, 19 insertions(+), 9 deletions(-) diff --git a/hw/arm/xlnx-zynqmp.c b/hw/arm/xlnx-zynqmp.c index ab2d50e31b..e735dbdf82 100644 --- a/hw/arm/xlnx-zynqmp.c +++ b/hw/arm/xlnx-zynqmp.c @@ -714,6 +714,10 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp) for (i = 0; i < XLNX_ZYNQMP_NUM_SPIS; i++) { gchar *bus_name; + if (!object_property_set_bool(OBJECT(&s->spi[i])), "little-endian", + true, errp)) { + return; + } if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi[i]), errp)) { return; } diff --git a/hw/ssi/xilinx_spi.c b/hw/ssi/xilinx_spi.c index 7f1e1808c5..8926ffb927 100644 --- a/hw/ssi/xilinx_spi.c +++ b/hw/ssi/xilinx_spi.c @@ -83,6 +83,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(XilinxSPI, XILINX_SPI) struct XilinxSPI { SysBusDevice parent_obj; + bool little_endian_model; MemoryRegion mmio; qemu_irq irq; @@ -313,14 +314,17 @@ done: xlx_spi_update_irq(s); } -static const MemoryRegionOps spi_ops = { - .read = spi_read, - .write = spi_write, - .endianness = DEVICE_NATIVE_ENDIAN, - .valid = { - .min_access_size = 4, - .max_access_size = 4 - } +static const MemoryRegionOps spi_ops[2] = { + [0 ... 1] = { + .read = spi_read, + .write = spi_write, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + }, + }, + [0].endianness = DEVICE_BIG_ENDIAN, + [1].endianness = DEVICE_LITTLE_ENDIAN, }; static void xilinx_spi_realize(DeviceState *dev, Error **errp) @@ -339,7 +343,8 @@ static void xilinx_spi_realize(DeviceState *dev, Error **errp) sysbus_init_irq(sbd, &s->cs_lines[i]); } - memory_region_init_io(&s->mmio, OBJECT(s), &spi_ops, s, + memory_region_init_io(&s->mmio, OBJECT(s), + &spi_ops[s->little_endian_model], s, "xilinx-spi", R_MAX * 4); sysbus_init_mmio(sbd, &s->mmio); @@ -362,6 +367,7 @@ static const VMStateDescription vmstate_xilinx_spi = { }; static Property xilinx_spi_properties[] = { + DEFINE_PROP_BOOL("little-endian", XilinxSPI, little_endian_model, true), DEFINE_PROP_UINT8("num-ss-bits", XilinxSPI, num_cs, 1), DEFINE_PROP_END_OF_LIST(), }; -- 2.45.2