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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/alpha/kernel/console.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/alpha/kernel/console.c')
-rw-r--r--arch/alpha/kernel/console.c66
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 @@
1/*
2 * linux/arch/alpha/kernel/console.c
3 *
4 * Architecture-specific specific support for VGA device on
5 * non-0 I/O hose
6 */
7
8#include <linux/config.h>
9#include <linux/pci.h>
10#include <linux/init.h>
11#include <linux/tty.h>
12#include <linux/console.h>
13#include <asm/vga.h>
14#include <asm/machvec.h>
15
16#ifdef CONFIG_VGA_HOSE
17
18/*
19 * Externally-visible vga hose bases
20 */
21unsigned long __vga_hose_io_base = 0; /* base for default hose */
22unsigned long __vga_hose_mem_base = 0; /* base for default hose */
23
24static struct pci_controller * __init
25default_vga_hose_select(struct pci_controller *h1, struct pci_controller *h2)
26{
27 if (h2->index < h1->index)
28 return h2;
29
30 return h1;
31}
32
33void __init
34set_vga_hose(struct pci_controller *hose)
35{
36 if (hose) {
37 __vga_hose_io_base = hose->io_space->start;
38 __vga_hose_mem_base = hose->mem_space->start;
39 }
40}
41
42void __init
43locate_and_init_vga(void *(*sel_func)(void *, void *))
44{
45 struct pci_controller *hose = NULL;
46 struct pci_dev *dev = NULL;
47
48 if (!sel_func) sel_func = (void *)default_vga_hose_select;
49
50 for(dev=NULL; (dev=pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, dev));) {
51 if (!hose) hose = dev->sysdata;
52 else hose = sel_func(hose, dev->sysdata);
53 }
54
55 /* Did we already inititialize the correct one? */
56 if (conswitchp == &vga_con &&
57 __vga_hose_io_base == hose->io_space->start &&
58 __vga_hose_mem_base == hose->mem_space->start)
59 return;
60
61 /* Set the VGA hose and init the new console */
62 set_vga_hose(hose);
63 take_over_console(&vga_con, 0, MAX_NR_CONSOLES-1, 1);
64}
65
66#endif