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/*
* Raspberry Pi emulation (c) 2012 Gregory Estrade
* This code is licensed under the GNU GPLv2 and later.
*/
#ifndef BCM2835_MBOX_DEFS_H
#define BCM2835_MBOX_DEFS_H
/* Constants shared with the ARM identifying separate mailbox channels */
#define MBOX_CHAN_POWER 0 /* for use by the power management interface */
#define MBOX_CHAN_FB 1 /* for use by the frame buffer */
#define MBOX_CHAN_VCHIQ 3 /* for use by the VCHIQ interface */
#define MBOX_CHAN_PROPERTY 8 /* for use by the property channel */
#define MBOX_CHAN_COUNT 9
#define MBOX_SIZE 32
#define MBOX_INVALID_DATA 0x0f
/* Layout of the private address space used for communication between
* the mbox device emulation, and child devices: each channel occupies
* 16 bytes of address space, but only two registers are presently defined.
*/
#define MBOX_AS_CHAN_SHIFT 4
#define MBOX_AS_DATA 0 /* request / response data (RW at offset 0) */
#define MBOX_AS_PENDING 4 /* pending response status (RO at offset 4) */
#endif /* BCM2835_MBOX_DEFS_H */
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