diff options
| author | Vladimir Kondratyev <wulf@FreeBSD.org> | 2021-09-29 20:15:37 +0000 |
|---|---|---|
| committer | Vladimir Kondratyev <wulf@FreeBSD.org> | 2021-09-29 20:15:37 +0000 |
| commit | c072f6e856bc0348bf6fdd468761041948823f73 (patch) | |
| tree | f307ff5b896b0c92a41b4aa16fb2995dfb604fa6 /sys/compat/linuxkpi/common/include/linux/page.h | |
| parent | 88531adbfbe25c6ae56cc7bbe76c825a3f5dc504 (diff) | |
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/page.h')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/page.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/page.h b/sys/compat/linuxkpi/common/include/linux/page.h index c2dbab769c2a..ca7365419e22 100644 --- a/sys/compat/linuxkpi/common/include/linux/page.h +++ b/sys/compat/linuxkpi/common/include/linux/page.h @@ -41,6 +41,10 @@ #include <vm/vm_page.h> #include <vm/pmap.h> +#if defined(__i386__) || defined(__amd64__) +#include <machine/md_var.h> +#endif + typedef unsigned long linux_pte_t; typedef unsigned long linux_pmd_t; typedef unsigned long linux_pgd_t; @@ -53,6 +57,8 @@ typedef unsigned long pgprot_t; CTASSERT((VM_PROT_ALL & -LINUXKPI_PROT_VALID) == 0); +#define PAGE_KERNEL_IO 0x0000 + static inline pgprot_t cachemode2protval(vm_memattr_t attr) { @@ -72,6 +78,7 @@ pgprot2cachemode(pgprot_t prot) #define page_to_pfn(pp) (VM_PAGE_TO_PHYS(pp) >> PAGE_SHIFT) #define pfn_to_page(pfn) (PHYS_TO_VM_PAGE((pfn) << PAGE_SHIFT)) #define nth_page(page,n) pfn_to_page(page_to_pfn(page) + (n)) +#define page_to_phys(page) VM_PAGE_TO_PHYS(page) #define clear_page(page) memset(page, 0, PAGE_SIZE) #define pgprot_noncached(prot) \ @@ -93,4 +100,19 @@ pgprot2cachemode(pgprot_t prot) #undef trunc_page #define trunc_page(x) ((uintptr_t)(x) & ~(PAGE_SIZE - 1)) +#if defined(__i386__) || defined(__amd64__) +#undef clflushopt +static inline void +lkpi_clflushopt(unsigned long addr) +{ + if (cpu_stdext_feature & CPUID_STDEXT_CLFLUSHOPT) + clflushopt(addr); + else if (cpu_feature & CPUID_CLFSH) + clflush(addr); + else + pmap_invalidate_cache(); +} +#define clflushopt(x) lkpi_clflushopt((unsigned long)(x)) +#endif + #endif /* _LINUX_PAGE_H_ */ |