Changeset cf3a905c in mainline for uspace/drv/char/ski-con/ski-con.c

Timestamp:

2018-11-23T18:32:50Z (5 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

04c35fca

Parents:

2519349

git-author:

Jiri Svoboda <jiri@…> (2018-11-22 19:31:08)

git-committer:

Jiri Svoboda <jiri@…> (2018-11-23 18:32:50)

Message:

Arbitrate ski console device using an arbitration parea.

File:

• uspace/drv/char/ski-con/ski-con.c (modified) (4 diffs)

uspace/drv/char/ski-con/ski-con.c

@@ -31 +31 @@
  */
 
+#include <as.h>
 #include <async.h>
 #include <ddf/driver.h>
 #include <ddf/log.h>
+#include <ddi.h>
 #include <errno.h>
 #include <fibril.h>
@@ -69 +71 @@
         ddf_fun_t *fun = NULL;
         bool bound = false;
+        uintptr_t faddr;
+        void *addr = AS_AREA_ANY;
         errno_t rc;
 
@@ -88 +92 @@
         con->cds.sarg = con;
 
+        rc = sysinfo_get_value("ski.paddr", &faddr);
+        if (rc != EOK)
+                faddr = 0; /* No kernel driver to arbitrate with */
+
+        if (faddr != 0) {
+                addr = AS_AREA_ANY;
+                rc = physmem_map(faddr, 1, AS_AREA_READ | AS_AREA_CACHEABLE,
+                    &addr);
+                if (rc != EOK) {
+                        ddf_msg(LVL_ERROR, "Cannot map kernel driver arbitration area.");
+                        goto error;
+                }
+        }
+
         rc = ddf_fun_bind(fun);
         if (rc != EOK) {
@@ -108 +126 @@
         return EOK;
 error:
+        if (addr != AS_AREA_ANY)
+                as_area_destroy(addr);
         if (bound)
                 ddf_fun_unbind(fun);