[src/trunk]: src/sys/dev/fdt Store node path in device properties "fdt-path" ...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6eefdc600a28
branches:  trunk
changeset: 991165:6eefdc600a28
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Jun 30 17:28:09 2018 +0000

description:
Store node path in device properties "fdt-path" property:

    # drvctl -p ehci0 fdt-path
    /soc/usb@5101000

While here, remove fdt_scan_bus (no longer required) and some debug printfs.

diffstat:

 sys/dev/fdt/fdtbus.c |  68 ++++++++++-----------------------------------------
 1 files changed, 14 insertions(+), 54 deletions(-)

diffs (134 lines):

diff -r 11aa8d0192ce -r 6eefdc600a28 sys/dev/fdt/fdtbus.c
--- a/sys/dev/fdt/fdtbus.c      Sat Jun 30 17:15:01 2018 +0000
+++ b/sys/dev/fdt/fdtbus.c      Sat Jun 30 17:28:09 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: fdtbus.c,v 1.21 2018/06/30 16:22:56 jmcneill Exp $ */
+/* $NetBSD: fdtbus.c,v 1.22 2018/06/30 17:28:09 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fdtbus.c,v 1.21 2018/06/30 16:22:56 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fdtbus.c,v 1.22 2018/06/30 17:28:09 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -71,7 +71,6 @@
 static int     fdt_match(device_t, cfdata_t, void *);
 static void    fdt_attach(device_t, device_t, void *);
 static int     fdt_scan_submatch(device_t, cfdata_t, const int *, void *);
-static void    fdt_scan_bus(device_t, const int);
 static void    fdt_scan(struct fdt_softc *, int);
 static void    fdt_add_node(struct fdt_node *);
 static u_int   fdt_get_order(int);
@@ -112,8 +111,7 @@
        struct fdt_softc *sc = device_private(self);
        const struct fdt_attach_args *faa = aux;
        const int phandle = faa->faa_phandle;
-       struct fdt_node *node;
-       const char *model;
+       const char *descr;
        int pass;
 
        sc->sc_dev = self;
@@ -121,34 +119,20 @@
        sc->sc_faa = *faa;
 
        aprint_naive("\n");
-       model = fdtbus_get_string(phandle, "model");
-       if (model)
-               aprint_normal(": %s\n", model);
+
+       descr = fdtbus_get_string(phandle, "model");
+       if (descr)
+               aprint_normal(": %s\n", descr);
        else
                aprint_normal("\n");
 
        /* Find all child nodes */
        fdt_add_bus(self, phandle, &sc->sc_faa);
 
-       /* Scan and attach all known busses in the tree. */
-       fdt_scan_bus(self, phandle);
-
        /* Only the root bus should scan for devices */
        if (OF_finddevice("/") != faa->faa_phandle)
                return;
 
-       aprint_debug_dev(sc->sc_dev, "  order   phandle   bus    path\n");
-       aprint_debug_dev(sc->sc_dev, "  =====   =======   ===    ====\n");
-       TAILQ_FOREACH(node, &fdt_nodes, n_nodes) {
-               char buf[FDT_MAX_PATH];
-               const char *path = buf;
-               if (!fdtbus_get_path(node->n_phandle, buf, sizeof(buf)))
-                       path = node->n_name;
-               aprint_debug_dev(sc->sc_dev, "   %04x   0x%04x    %s   %s\n",
-                   node->n_order & 0xffff, node->n_phandle,
-                   device_xname(node->n_bus), path);
-       }
-
        /* Scan devices */
        pass = 0;
        fdt_need_rescan = false;
@@ -173,37 +157,6 @@
        faa->faa_quiet = quiet;
 }
 
-static void
-fdt_scan_bus(device_t bus, const int phandle)
-{
-       struct fdt_node *node;
-       struct fdt_attach_args faa;
-       cfdata_t cf;
-
-       TAILQ_FOREACH(node, &fdt_nodes, n_nodes) {
-               if (node->n_bus != bus)
-                       continue;
-               if (node->n_dev != NULL)
-                       continue;
-
-               faa = node->n_faa;
-               faa.faa_quiet = true;
-
-               /*
-                * Only attach busses to nodes where this driver is the best
-                * match.
-                */
-               cf = config_search_loc(NULL, node->n_bus, NULL, NULL, &faa);
-               if (cf == NULL || strcmp(cf->cf_name, "fdt") != 0)
-                       continue;
-
-               /*
-                * Attach the bus.
-                */
-               node->n_dev = config_found(node->n_bus, &faa, fdtbus_print);
-       }
-}
-
 void
 fdt_add_bus(device_t bus, const int phandle, struct fdt_attach_args *faa)
 {
@@ -277,6 +230,8 @@
                [FDTCF_PASS] = pass
        };
        bool quiet = pass != FDTCF_PASS_DEFAULT;
+       prop_dictionary_t dict;
+       char buf[FDT_MAX_PATH];
 
        TAILQ_FOREACH(node, &fdt_nodes, n_nodes) {
                if (node->n_dev != NULL)
@@ -298,6 +253,11 @@
                 */
                node->n_dev = config_found_sm_loc(node->n_bus, "fdt", locs,
                    &faa, fdtbus_print, fdt_scan_submatch);
+               if (node->n_dev) {
+                       dict = device_properties(node->n_dev);
+                       if (fdtbus_get_path(node->n_phandle, buf, sizeof(buf)))
+                               prop_dictionary_set_cstring(dict, "fdt-path", buf);
+               }
        }
 }