Date: Sat, 14 Sep 2019 13:33:52 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r352330 - stable/11/sys/compat/linuxkpi/common/include/linux Message-ID: <201909141333.x8EDXq3n039725@repo.freebsd.org>
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Author: hselasky Date: Sat Sep 14 13:33:52 2019 New Revision: 352330 URL: https://svnweb.freebsd.org/changeset/base/352330 Log: MFC r351693: 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 Sponsored by: Mellanox Technologies Modified: stable/11/sys/compat/linuxkpi/common/include/linux/io.h Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/compat/linuxkpi/common/include/linux/io.h ============================================================================== --- stable/11/sys/compat/linuxkpi/common/include/linux/io.h Sat Sep 14 13:33:36 2019 (r352329) +++ stable/11/sys/compat/linuxkpi/common/include/linux/io.h Sat Sep 14 13:33:52 2019 (r352330) @@ -356,16 +356,25 @@ void *_ioremap_attr(vm_paddr_t phys_addr, unsigned lon #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))
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