Generic device handling updates

1 files changed, 33 insertions, 0 deletions

diff --git a/device.h b/device.h
index beabe52..cf84e05 100644
--- a/device.h
+++ b/device.h
@@ -12,20 +12,53 @@
 #ifndef _DEVICE_H_
 #define _DEVICE_H_
 
+/* IRQs for all used devices shall be allocated here */
+#define IRQ_TIMER		1
+#define IRQ_UART		2
+#define IRQ_JTAG_UART		3
+
+#define IRQ_TO_MASK(irq)	(1UL << (irq))
+
 struct device {
 	const char *name;
 
 	uint32_t base;
 	size_t size;
 
+	uint32_t irq_mask;
+
 	int (*init)(struct device *dev);
 	bool (*is_dev_addr)(struct device *dev, uint32_t addr);
+	size_t (*read)(struct device *dev, uint32_t addr, uint32_t *data, size_t count);
+	size_t (*write)(struct device *dev, uint32_t addr, uint32_t *data, size_t count);
+	bool (*has_irq)(struct device *dev);
 	void (*simulate)(struct device *dev);
 
 	/* Private data */
 	void *priv;
 };
 
+extern bool device_generic_is_dev_addr(struct device *dev, uint32_t addr);
 extern int device_init_all(void);
+extern struct device *device_get_by_addr(uint32_t addr);
+extern void device_simulate_all(void);
+
+/*
+ * Device registers
+ */
+
+struct io_register {
+	uint32_t addr;
+	uint32_t valid_mask;
+	uint32_t readonly_mask;
+	uint32_t value;
+};
+
+#define REG_TO_OFF(reg)	((reg) * sizeof(uint32_t))
+
+extern void io_register_init(struct io_register *reg, uint32_t addr,
+			     uint32_t valid, uint32_t readonly, uint32_t value);
+extern uint32_t io_register_read(struct io_register *reg);
+extern void io_register_write(struct io_register *reg, uint32_t value);
 
 #endif /* _DEVICE_H_ */