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| author | Hans Petter Selasky <hselasky@FreeBSD.org> | 2019-09-02 08:34:45 +0000 |
|---|---|---|
| committer | Hans Petter Selasky <hselasky@FreeBSD.org> | 2019-09-02 08:34:45 +0000 |
| commit | 4d83500fda1b67342c81b58ad7ef9738325b83a4 (patch) | |
| tree | 3aee393f1d92f681f2be3d7ace85a1b37927abec /sys/compat/linuxkpi/common/include/linux/io.h | |
| parent | f6549df685bf3d620a1e76d45107ee8b831ab4e2 (diff) | |
| download | src-4d83500fda1b67342c81b58ad7ef9738325b83a4.tar.gz src-4d83500fda1b67342c81b58ad7ef9738325b83a4.zip | |
Use DEVICE memory instead of UNCACHEABLE on aarch64 in ioremap() in the LinuxKPI.
This fixes system hangs on reading device registers on aarch64.
Tested with: Marvell MACCHIATObin (Armada8k) + mlx4en, amdgpu
Submitted by: Greg V <greg@unrelenting.technology>
Differential Revision: https://reviews.freebsd.org/D20789
MFC after: 1 week
Sponsored by: Mellanox Technologies
Notes
Notes:
svn path=/head/; revision=351693
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/io.h')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/io.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/io.h b/sys/compat/linuxkpi/common/include/linux/io.h index 8dc0308a5e7d..5cffe9b080e3 100644 --- a/sys/compat/linuxkpi/common/include/linux/io.h +++ b/sys/compat/linuxkpi/common/include/linux/io.h @@ -396,16 +396,25 @@ void *_ioremap_attr(vm_paddr_t phys_addr, unsigned long size, int attr); #define _ioremap_attr(...) NULL #endif +#ifdef VM_MEMATTR_DEVICE +#define ioremap_nocache(addr, size) \ + _ioremap_attr((addr), (size), VM_MEMATTR_DEVICE) +#define ioremap_wt(addr, size) \ + _ioremap_attr((addr), (size), VM_MEMATTR_DEVICE) +#define ioremap(addr, size) \ + _ioremap_attr((addr), (size), VM_MEMATTR_DEVICE) +#else #define ioremap_nocache(addr, size) \ _ioremap_attr((addr), (size), VM_MEMATTR_UNCACHEABLE) -#define ioremap_wc(addr, size) \ - _ioremap_attr((addr), (size), VM_MEMATTR_WRITE_COMBINING) -#define ioremap_wb(addr, size) \ - _ioremap_attr((addr), (size), VM_MEMATTR_WRITE_BACK) #define ioremap_wt(addr, size) \ _ioremap_attr((addr), (size), VM_MEMATTR_WRITE_THROUGH) #define ioremap(addr, size) \ _ioremap_attr((addr), (size), VM_MEMATTR_UNCACHEABLE) +#endif +#define ioremap_wc(addr, size) \ + _ioremap_attr((addr), (size), VM_MEMATTR_WRITE_COMBINING) +#define ioremap_wb(addr, size) \ + _ioremap_attr((addr), (size), VM_MEMATTR_WRITE_BACK) void iounmap(void *addr); #define memset_io(a, b, c) memset((a), (b), (c)) |