Date: Sun, 3 Oct 2021 18:36:49 GMT From: Jessica Clarke <jrtc27@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 8167c92f65bc - main - LinuxKPI: Add more #ifdef VM_MEMATTR_WRITE_COMBINING guards Message-ID: <202110031836.193Ian5c074916@gitrepo.freebsd.org>
next in thread | raw e-mail | index | archive | help
The branch main has been updated by jrtc27: URL: https://cgit.FreeBSD.org/src/commit/?id=8167c92f65bc20145467b3b98c842cde57736900 commit 8167c92f65bc20145467b3b98c842cde57736900 Author: Jessica Clarke <jrtc27@FreeBSD.org> AuthorDate: 2021-10-03 18:34:40 +0000 Commit: Jessica Clarke <jrtc27@FreeBSD.org> CommitDate: 2021-10-03 18:34:40 +0000 LinuxKPI: Add more #ifdef VM_MEMATTR_WRITE_COMBINING guards One of the three uses is already guarded; this guards the remaining ones to support architectures like riscv that do not provide write-combining, and is needed to build drm-kmod on riscv. Reviewed by: hselasky, manu MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D31999 --- sys/compat/linuxkpi/common/include/linux/io.h | 4 ++++ sys/compat/linuxkpi/common/include/linux/page.h | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/sys/compat/linuxkpi/common/include/linux/io.h b/sys/compat/linuxkpi/common/include/linux/io.h index 0104eea90ace..074417b892f9 100644 --- a/sys/compat/linuxkpi/common/include/linux/io.h +++ b/sys/compat/linuxkpi/common/include/linux/io.h @@ -411,8 +411,12 @@ void *_ioremap_attr(vm_paddr_t phys_addr, unsigned long size, int attr); #define ioremap(addr, size) \ _ioremap_attr((addr), (size), VM_MEMATTR_UNCACHEABLE) #endif +#ifdef VM_MEMATTR_WRITE_COMBINING #define ioremap_wc(addr, size) \ _ioremap_attr((addr), (size), VM_MEMATTR_WRITE_COMBINING) +#else +#define ioremap_wc(addr, size) ioremap_nocache(addr, size) +#endif #define ioremap_wb(addr, size) \ _ioremap_attr((addr), (size), VM_MEMATTR_WRITE_BACK) void iounmap(void *addr); diff --git a/sys/compat/linuxkpi/common/include/linux/page.h b/sys/compat/linuxkpi/common/include/linux/page.h index ca7365419e22..0c3d456d6ec0 100644 --- a/sys/compat/linuxkpi/common/include/linux/page.h +++ b/sys/compat/linuxkpi/common/include/linux/page.h @@ -83,8 +83,12 @@ pgprot2cachemode(pgprot_t prot) #define clear_page(page) memset(page, 0, PAGE_SIZE) #define pgprot_noncached(prot) \ (((prot) & VM_PROT_ALL) | cachemode2protval(VM_MEMATTR_UNCACHEABLE)) +#ifdef VM_MEMATTR_WRITE_COMBINING #define pgprot_writecombine(prot) \ (((prot) & VM_PROT_ALL) | cachemode2protval(VM_MEMATTR_WRITE_COMBINING)) +#else +#define pgprot_writecombine(prot) pgprot_noncached(prot) +#endif #undef PAGE_MASK #define PAGE_MASK (~(PAGE_SIZE-1))
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?202110031836.193Ian5c074916>