199494e69SAndrew Baumann /* 299494e69SAndrew Baumann * Raspberry Pi emulation (c) 2012 Gregory Estrade 3*6111a0c0SPhilippe Mathieu-Daudé * 4*6111a0c0SPhilippe Mathieu-Daudé * This work is licensed under the terms of the GNU GPL, version 2 or later. 5*6111a0c0SPhilippe Mathieu-Daudé * See the COPYING file in the top-level directory. 699494e69SAndrew Baumann */ 799494e69SAndrew Baumann 899494e69SAndrew Baumann #ifndef BCM2835_MBOX_DEFS_H 999494e69SAndrew Baumann #define BCM2835_MBOX_DEFS_H 1099494e69SAndrew Baumann 1199494e69SAndrew Baumann /* Constants shared with the ARM identifying separate mailbox channels */ 1299494e69SAndrew Baumann #define MBOX_CHAN_POWER 0 /* for use by the power management interface */ 1399494e69SAndrew Baumann #define MBOX_CHAN_FB 1 /* for use by the frame buffer */ 1499494e69SAndrew Baumann #define MBOX_CHAN_VCHIQ 3 /* for use by the VCHIQ interface */ 1599494e69SAndrew Baumann #define MBOX_CHAN_PROPERTY 8 /* for use by the property channel */ 1699494e69SAndrew Baumann #define MBOX_CHAN_COUNT 9 1799494e69SAndrew Baumann 1899494e69SAndrew Baumann #define MBOX_SIZE 32 1999494e69SAndrew Baumann #define MBOX_INVALID_DATA 0x0f 2099494e69SAndrew Baumann 2199494e69SAndrew Baumann /* Layout of the private address space used for communication between 2299494e69SAndrew Baumann * the mbox device emulation, and child devices: each channel occupies 2399494e69SAndrew Baumann * 16 bytes of address space, but only two registers are presently defined. 2499494e69SAndrew Baumann */ 2599494e69SAndrew Baumann #define MBOX_AS_CHAN_SHIFT 4 2699494e69SAndrew Baumann #define MBOX_AS_DATA 0 /* request / response data (RW at offset 0) */ 2799494e69SAndrew Baumann #define MBOX_AS_PENDING 4 /* pending response status (RO at offset 4) */ 2899494e69SAndrew Baumann 2999494e69SAndrew Baumann #endif /* BCM2835_MBOX_DEFS_H */ 30