Date: Wed, 13 Jul 2016 23:03:34 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r302789 - in head/sys/arm64: arm64 include Message-ID: <201607132303.u6DN3YhJ097696@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: andrew Date: Wed Jul 13 23:03:34 2016 New Revision: 302789 URL: https://svnweb.freebsd.org/changeset/base/302789 Log: Add memmmap on arm64 so we can mmap /dev/mem and /dev/kmem. Obtained from: ABT Systems Ltd MFC after: 1 week Sponsored by: The FreeBSD Foundation Modified: head/sys/arm64/arm64/mem.c head/sys/arm64/include/memdev.h Modified: head/sys/arm64/arm64/mem.c ============================================================================== --- head/sys/arm64/arm64/mem.c Wed Jul 13 22:53:30 2016 (r302788) +++ head/sys/arm64/arm64/mem.c Wed Jul 13 23:03:34 2016 (r302789) @@ -114,3 +114,19 @@ memrw(struct cdev *dev, struct uio *uio, return (error); } +/* + * allow user processes to MMAP some memory sections + * instead of going through read/write + */ +/* ARGSUSED */ +int +memmmap(struct cdev *dev, vm_ooffset_t offset, vm_paddr_t *paddr, + int prot __unused, vm_memattr_t *memattr __unused) +{ + if (dev2unit(dev) == CDEV_MINOR_MEM) + *paddr = offset; + else if (dev2unit(dev) == CDEV_MINOR_KMEM) + *paddr = vtophys(offset); + /* else panic! */ + return (0); +} Modified: head/sys/arm64/include/memdev.h ============================================================================== --- head/sys/arm64/include/memdev.h Wed Jul 13 22:53:30 2016 (r302788) +++ head/sys/arm64/include/memdev.h Wed Jul 13 23:03:34 2016 (r302789) @@ -35,6 +35,6 @@ d_open_t memopen; d_read_t memrw; #define memioctl (d_ioctl_t *)NULL -#define memmmap (d_mmap_t *)NULL +d_mmap_t memmmap; #endif /* _MACHINE_MEMDEV_H_ */
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201607132303.u6DN3YhJ097696>