d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add macroses to properly map IO peripherals memory window from

Browse Source 
ARM physical memory address space to VideoCore address space
This commit is contained in:
Oleksandr Tymoshenko 2013-02-23 22:46:26 +00:00
parent 3bb97cef07
commit e5b6b345cf
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
sys/arm/broadcom/bcm2835/bcm2835_vcbus.h
View File

@ -34,14 +34,28 @@
#define _BCM2835_VCBUS_H_
#define BCM2835_VCBUS_SDRAM_CACHED 0x40000000
#define BCM2835_VCBUS_IO_BASE 0x7E000000
#define BCM2835_VCBUS_SDRAM_UNCACHED 0xC0000000
#define BCM2835_ARM_IO_BASE 0x20000000
#define BCM2835_ARM_IO_SIZE 0x02000000
/*
* Convert physical address to VC bus address. Should be used
* when submitting address over mailbox interface
*/
#define PHYS_TO_VCBUS(pa) ((pa) + BCM2835_VCBUS_SDRAM_CACHED)
/* Check whether pa bellong top IO window */
#define BCM2835_ARM_IS_IO(pa) (((pa) >= BCM2835_ARM_IO_BASE) && \
((pa) < BCM2835_ARM_IO_BASE + BCM2835_ARM_IO_SIZE))
/*
* Convert physical address in IO space to VC bus address.
*/
#define IO_TO_VCBUS(pa) ((pa - BCM2835_ARM_IO_BASE) + \
BCM2835_VCBUS_IO_BASE)
/*
* Convert address from VC bus space to physical. Should be used
* when address is returned by VC over mailbox interface. e.g.