Changeset f8ddd17 in mainline for kernel/generic/src/console/klog.c

Timestamp:

2006-12-09T20:20:50Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

b82a13c

Parents:

9ab9c2ec

Message:

Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.

Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.

Lots of coding style changes.

File:

• kernel/generic/src/console/klog.c (modified) (2 diffs)

kernel/generic/src/console/klog.c

@@ -39 +39 @@
 #include <ddi/device.h>
 #include <ddi/irq.h>
+#include <ddi/ddi.h>
 #include <ipc/irq.h>
 
+/** Physical memory area used for klog. */
+static parea_t klog_parea;
+        
 /*
  * For now, we use 0 as INR.
- * However, on some architectures 0 is the clock interrupt (e.g. amd64 and ia32).
- * It is therefore desirable to have architecture specific definition of KLOG_VIRT_INR
- * in the future.
+ * However, on some architectures 0 is the clock interrupt (e.g. amd64 and
+ * ia32). It is therefore desirable to have architecture specific definition of
+ * KLOG_VIRT_INR in the future.
  */
 #define KLOG_VIRT_INR   0
@@ -76 +80 @@
         if (!faddr)
                 panic("Cannot allocate page for klog");
-        klog = (char *)PA2KA(faddr);
+        klog = (char *) PA2KA(faddr);
         
         devno_t devno = device_assign_devno();
         
-        sysinfo_set_item_val("klog.faddr", NULL, (unative_t)faddr);
+        klog_parea.pbase = (uintptr_t) faddr;
+        klog_parea.vbase = (uintptr_t) klog;
+        klog_parea.frames = 1 << KLOG_ORDER;
+        klog_parea.cacheable = true;
+        ddi_parea_register(&klog_parea);
+
+        sysinfo_set_item_val("klog.faddr", NULL, (unative_t) faddr);
+        sysinfo_set_item_val("klog.fcolor", NULL, (unative_t)
+                PAGE_COLOR((uintptr_t) klog));
         sysinfo_set_item_val("klog.pages", NULL, 1 << KLOG_ORDER);
         sysinfo_set_item_val("klog.devno", NULL, devno);