diff options
Diffstat (limited to 'hw/ssi')
| -rw-r--r-- | hw/ssi/aspeed_smc.c | 8 | ||||
| -rw-r--r-- | hw/ssi/ssi.c | 43 |
2 files changed, 51 insertions, 0 deletions
diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c index 7281169322..2a4001b774 100644 --- a/hw/ssi/aspeed_smc.c +++ b/hw/ssi/aspeed_smc.c @@ -692,6 +692,14 @@ static void aspeed_smc_reset(DeviceState *d) memset(s->regs, 0, sizeof s->regs); } + for (i = 0; i < asc->cs_num_max; i++) { + DeviceState *dev = ssi_get_cs(s->spi, i); + if (dev) { + qemu_irq cs_line = qdev_get_gpio_in_named(dev, SSI_GPIO_CS, 0); + qdev_connect_gpio_out_named(DEVICE(s), "cs", i, cs_line); + } + } + /* Unselect all peripherals */ for (i = 0; i < asc->cs_num_max; ++i) { s->regs[s->r_ctrl0 + i] |= CTRL_CE_STOP_ACTIVE; diff --git a/hw/ssi/ssi.c b/hw/ssi/ssi.c index d54a109bee..1f3e540ab8 100644 --- a/hw/ssi/ssi.c +++ b/hw/ssi/ssi.c @@ -13,6 +13,7 @@ */ #include "qemu/osdep.h" +#include "hw/qdev-properties.h" #include "hw/ssi/ssi.h" #include "migration/vmstate.h" #include "qemu/module.h" @@ -26,10 +27,46 @@ struct SSIBus { #define TYPE_SSI_BUS "SSI" OBJECT_DECLARE_SIMPLE_TYPE(SSIBus, SSI_BUS) +DeviceState *ssi_get_cs(SSIBus *bus, uint8_t cs_index) +{ + BusState *b = BUS(bus); + BusChild *kid; + + QTAILQ_FOREACH(kid, &b->children, sibling) { + SSIPeripheral *kid_ssi = SSI_PERIPHERAL(kid->child); + if (kid_ssi->cs_index == cs_index) { + return kid->child; + } + } + + return NULL; +} + +static bool ssi_bus_check_address(BusState *b, DeviceState *dev, Error **errp) +{ + SSIPeripheral *s = SSI_PERIPHERAL(dev); + + if (ssi_get_cs(SSI_BUS(b), s->cs_index)) { + error_setg(errp, "CS index '0x%x' in use by a %s device", s->cs_index, + object_get_typename(OBJECT(dev))); + return false; + } + + return true; +} + +static void ssi_bus_class_init(ObjectClass *klass, void *data) +{ + BusClass *k = BUS_CLASS(klass); + + k->check_address = ssi_bus_check_address; +} + static const TypeInfo ssi_bus_info = { .name = TYPE_SSI_BUS, .parent = TYPE_BUS, .instance_size = sizeof(SSIBus), + .class_init = ssi_bus_class_init, }; static void ssi_cs_default(void *opaque, int n, int level) @@ -71,6 +108,11 @@ static void ssi_peripheral_realize(DeviceState *dev, Error **errp) ssc->realize(s, errp); } +static Property ssi_peripheral_properties[] = { + DEFINE_PROP_UINT8("cs", SSIPeripheral, cs_index, 0), + DEFINE_PROP_END_OF_LIST(), +}; + static void ssi_peripheral_class_init(ObjectClass *klass, void *data) { SSIPeripheralClass *ssc = SSI_PERIPHERAL_CLASS(klass); @@ -81,6 +123,7 @@ static void ssi_peripheral_class_init(ObjectClass *klass, void *data) if (!ssc->transfer_raw) { ssc->transfer_raw = ssi_transfer_raw_default; } + device_class_set_props(dc, ssi_peripheral_properties); } static const TypeInfo ssi_peripheral_info = { |