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authorTom Jones <thj@freebsd.org>2024-02-02 14:25:24 +0000
committerDamjan Marion <dmarion@0xa5.net>2024-04-24 14:40:59 +0000
commit97188d71dd952e60e3603b0331c8a73aacfd233f (patch)
tree40311a0af8076c801d9cd32124ff2d125efca857
parenta0fd523013289c24c65f30ccd1bc9e4b39f81feb (diff)
vppinfra: Add FreeBSD method for updating pmalloc lookup table
FreeBSD has a different interface to request memory mapping information. Add a FreeBSD specific method for reading physical addresses and make it available at build time. Type: improvement Change-Id: I3588dde8e0a6f6d53333040245341ed09cebef9d Signed-off-by: Tom Jones <thj@freebsd.org>
-rw-r--r--src/vppinfra/pmalloc.c45
1 files changed, 44 insertions, 1 deletions
diff --git a/src/vppinfra/pmalloc.c b/src/vppinfra/pmalloc.c
index 2a27379b573..85b9db9d56c 100644
--- a/src/vppinfra/pmalloc.c
+++ b/src/vppinfra/pmalloc.c
@@ -17,6 +17,9 @@
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
+#ifdef __FreeBSD__
+#include <sys/memrange.h>
+#endif /* __FreeBSD__ */
#include <fcntl.h>
#include <unistd.h>
#include <sched.h>
@@ -184,8 +187,9 @@ next_chunk:
}
static void
-pmalloc_update_lookup_table (clib_pmalloc_main_t * pm, u32 first, u32 count)
+pmalloc_update_lookup_table (clib_pmalloc_main_t *pm, u32 first, u32 count)
{
+#ifdef __linux
uword seek, va, pa, p;
int fd;
u32 elts_per_page = 1U << (pm->def_log2_page_sz - pm->lookup_log2_page_sz);
@@ -223,6 +227,45 @@ pmalloc_update_lookup_table (clib_pmalloc_main_t * pm, u32 first, u32 count)
if (fd != -1)
close (fd);
+#elif defined(__FreeBSD__)
+ struct mem_extract meme;
+ uword p;
+ int fd;
+ u32 elts_per_page = 1U << (pm->def_log2_page_sz - pm->lookup_log2_page_sz);
+
+ vec_validate_aligned (pm->lookup_table,
+ vec_len (pm->pages) * elts_per_page - 1,
+ CLIB_CACHE_LINE_BYTES);
+
+ p = (uword) first * elts_per_page;
+ if (pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP)
+ {
+ while (p < (uword) elts_per_page * count)
+ {
+ pm->lookup_table[p] =
+ pointer_to_uword (pm->base) + (p << pm->lookup_log2_page_sz);
+ p++;
+ }
+ return;
+ }
+
+ fd = open ((char *) "/dev/mem", O_RDONLY);
+ if (fd == -1)
+ return;
+
+ while (p < (uword) elts_per_page * count)
+ {
+ meme.me_vaddr =
+ pointer_to_uword (pm->base) + (p << pm->lookup_log2_page_sz);
+ if (ioctl (fd, MEM_EXTRACT_PADDR, &meme) == -1)
+ continue;
+ pm->lookup_table[p] = meme.me_vaddr - meme.me_paddr;
+ p++;
+ }
+ return;
+#else
+#error "Unsupported OS"
+#endif
}
static inline clib_pmalloc_page_t *