From: Peter Crosthwaite <address@hidden>
Add a helper that will scan a static RegisterAccessInfo Array
and populate a container MemoryRegion with registers as defined.
Signed-off-by: Peter Crosthwaite <address@hidden>
Signed-off-by: Alistair Francis <address@hidden>
---
V2:
- Use memory_region_add_subregion_no_print()
hw/core/register.c | 29 +++++++++++++++++++++++++++++
include/hw/register.h | 21 +++++++++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/hw/core/register.c b/hw/core/register.c
index 000b87f..116fd0b 100644
--- a/hw/core/register.c
+++ b/hw/core/register.c
@@ -255,6 +255,35 @@ uint64_t register_read_memory_le(void *opaque, hwaddr
addr, unsigned size)
return register_read_memory(opaque, addr, size, false);
}
+void register_init_block32(DeviceState *owner, const RegisterAccessInfo *rae,
+ int num, RegisterInfo *ri, uint32_t *data,
+ MemoryRegion *container, const MemoryRegionOps *ops,
+ bool debug_enabled)
+{
+ const char *debug_prefix = object_get_typename(OBJECT(owner));
+ int i;
+
+ for (i = 0; i < num; i++) {
+ int index = rae[i].decode.addr / 4;
+ RegisterInfo *r = &ri[index];
+
+ *r = (RegisterInfo) {
+ .data = &data[index],
+ .data_size = sizeof(uint32_t),
+ .access = &rae[i],
+ .debug = debug_enabled,
+ .prefix = debug_prefix,
+ .opaque = owner,
+ };
+ register_init(r);
+
+ memory_region_init_io(&r->mem, OBJECT(owner), ops, r, r->access->name,
+ sizeof(uint32_t));
+ memory_region_add_subregion_no_print(container,
+ r->access->decode.addr, &r->mem);
+ }
+}
+
static const TypeInfo register_info = {
.name = TYPE_REGISTER,
.parent = TYPE_DEVICE,
diff --git a/include/hw/register.h b/include/hw/register.h
index 6677dee..f3e4c2c 100644
--- a/include/hw/register.h
+++ b/include/hw/register.h
@@ -186,6 +186,27 @@ void register_write_memory_le(void *opaque, hwaddr addr,
uint64_t value,
uint64_t register_read_memory_be(void *opaque, hwaddr addr, unsigned size);
uint64_t register_read_memory_le(void *opaque, hwaddr addr, unsigned size);
+/**
+ * Init a block of consecutive registers into a container MemoryRegion. A
+ * number of constant register definitions are parsed to create a corresponding
+ * array of RegisterInfo's.
+ *
+ * @owner: device owning the registers
+ * @rae: Register definitions to init
+ * @num: number of registers to init (length of @rae)
+ * @ri: Register array to init
+ * @data: Array to use for register data
+ * @container: Memory region to contain new registers
+ * @ops: Memory region ops to use to access registers. Opaque data of handler
+ * with be a RegisterInfo * (from @ri)
+ * @debug enabled: turn on/off verbose debug information
+ */
+
+void register_init_block32(DeviceState *owner, const RegisterAccessInfo *rae,
+ int num, RegisterInfo *ri, uint32_t *data,
+ MemoryRegion *container, const MemoryRegionOps *ops,
+ bool debug_enabled);
+
/* Define constants for a 32 bit register */
#define REG32(reg, addr) \
enum { A_ ## reg = (addr) }; \