diff options
Diffstat (limited to 'sys/dev/md/md.c')
| -rw-r--r-- | sys/dev/md/md.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/sys/dev/md/md.c b/sys/dev/md/md.c index 741a7c013f7d..ec1664fac701 100644 --- a/sys/dev/md/md.c +++ b/sys/dev/md/md.c @@ -11,9 +11,9 @@ */ /*- - * The following functions are based on the vn(4) driver: mdstart_swap(), - * mdstart_vnode(), mdcreate_swap(), mdcreate_vnode() and mddestroy(), - * and as such under the following copyright: + * The following functions are based on the historical vn(4) driver: + * mdstart_swap(), mdstart_vnode(), mdcreate_swap(), mdcreate_vnode() + * and mddestroy(), and as such under the following copyright: * * Copyright (c) 1988 University of Utah. * Copyright (c) 1990, 1993 @@ -89,6 +89,8 @@ #include <sys/unistd.h> #include <sys/vnode.h> #include <sys/disk.h> +#include <sys/param.h> +#include <sys/bus.h> #include <geom/geom.h> #include <geom/geom_int.h> @@ -2082,8 +2084,10 @@ g_md_init(struct g_class *mp __unused) { caddr_t mod; u_char *ptr, *name, *type; + u_char scratch[40]; unsigned len; int i; + vm_offset_t paddr; /* figure out log2(NINDIR) */ for (i = NINDIR, nshift = -1; i; nshift++) @@ -2123,6 +2127,25 @@ g_md_init(struct g_class *mp __unused) sx_xunlock(&md_sx); } } + + /* + * Load up to 32 pre-loaded disks + */ + for (int i = 0; i < 32; i++) { + if (resource_long_value("md", i, "physaddr", + (long *) &paddr) != 0 || + resource_int_value("md", i, "len", &len) != 0) + break; + ptr = (char *)pmap_map(NULL, paddr, paddr + len, VM_PROT_READ); + if (ptr != NULL && len != 0) { + sprintf(scratch, "preload%d 0x%016jx", i, + (uintmax_t)paddr); + sx_xlock(&md_sx); + md_preloaded(ptr, len, scratch); + sx_xunlock(&md_sx); + } + } + status_dev = make_dev(&mdctl_cdevsw, INT_MAX, UID_ROOT, GID_WHEEL, 0600, MDCTL_NAME); g_topology_lock(); |