1 files changed, 66 insertions, 0 deletions

diff --git a/arch/alpha/kernel/console.c b/arch/alpha/kernel/console.c
new file mode 100644
index 000000000000..cb3e739fbad8
--- /dev/null
+++ b/arch/alpha/kernel/console.c
@@ -0,0 +1,66 @@
+/*
+ *      linux/arch/alpha/kernel/console.c
+ *
+ * Architecture-specific specific support for VGA device on 
+ * non-0 I/O hose
+ */
+
+#include <linux/config.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <asm/vga.h>
+#include <asm/machvec.h>
+
+#ifdef CONFIG_VGA_HOSE
+
+/*
+ * Externally-visible vga hose bases
+ */
+unsigned long __vga_hose_io_base = 0;   /* base for default hose */
+unsigned long __vga_hose_mem_base = 0;  /* base for default hose */
+
+static struct pci_controller * __init 
+default_vga_hose_select(struct pci_controller *h1, struct pci_controller *h2)
+{
+        if (h2->index < h1->index)
+                return h2;
+
+        return h1;
+}
+
+void __init 
+set_vga_hose(struct pci_controller *hose)
+{
+        if (hose) {
+                __vga_hose_io_base = hose->io_space->start;
+                __vga_hose_mem_base = hose->mem_space->start;
+        }
+}
+
+void __init 
+locate_and_init_vga(void *(*sel_func)(void *, void *))
+{
+        struct pci_controller *hose = NULL;
+        struct pci_dev *dev = NULL;
+
+        if (!sel_func) sel_func = (void *)default_vga_hose_select;
+
+        for(dev=NULL; (dev=pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, dev));) {
+                if (!hose) hose = dev->sysdata;
+                else hose = sel_func(hose, dev->sysdata);
+        }
+
+        /* Did we already inititialize the correct one? */
+        if (conswitchp == &vga_con &&
+            __vga_hose_io_base == hose->io_space->start &&
+            __vga_hose_mem_base == hose->mem_space->start)
+                return;
+
+        /* Set the VGA hose and init the new console */
+        set_vga_hose(hose);
+        take_over_console(&vga_con, 0, MAX_NR_CONSOLES-1, 1);
+}
+
+#endif