[IA64-SGI] pcdp: add PCDP pci interface support
Resend 2 with changes per Bjorn Helgaas comments. Changes from original:
+ Change globals to vga_console_iobase/vga_console_membase and make them
unconditional.
+ Address style-related comments.
Patch to extend the PCDP vga setup code to support PCI io/mem translations
for the legacy vga ioport and ram spaces on architectures (e.g. altix) which
need them.
Summary of the changes:
drivers/firmware/pcdp.c
drivers/firmware/pcdp.h
-----------------------
+ add declaration for the spec-defined PCI interface struct (pcdp_if_pci)
as well as support macros.
+ extend setup_vga_console() to know about pcdp_if_pci and add a couple of
globals to hold the io and mem translation offsets if present.
arch/ia64/kernel/setup.c
------------------------
+ tweek early_console_setup() to allow multiple early console setup routines
to be called.
include/asm-ia64/vga.h
----------------------
+ make VGA_MAP_MEM vga_console_membase aware
Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index d14692e..2693e15 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -72,6 +72,8 @@
unsigned long ia64_cycles_per_usec;
struct ia64_boot_param *ia64_boot_param;
struct screen_info screen_info;
+unsigned long vga_console_iobase;
+unsigned long vga_console_membase;
unsigned long ia64_max_cacheline_size;
unsigned long ia64_iobase; /* virtual address for I/O accesses */
@@ -273,23 +275,25 @@
static inline int __init
early_console_setup (char *cmdline)
{
+ int earlycons = 0;
+
#ifdef CONFIG_SERIAL_SGI_L1_CONSOLE
{
extern int sn_serial_console_early_setup(void);
if (!sn_serial_console_early_setup())
- return 0;
+ earlycons++;
}
#endif
#ifdef CONFIG_EFI_PCDP
if (!efi_setup_pcdp_console(cmdline))
- return 0;
+ earlycons++;
#endif
#ifdef CONFIG_SERIAL_8250_CONSOLE
if (!early_serial_console_init(cmdline))
- return 0;
+ earlycons++;
#endif
- return -1;
+ return (earlycons) ? 0 : -1;
}
static inline void