[PARISC] Add support for Quicksilver AGPGART

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/asm-parisc/ropes.h b/include/asm-parisc/ropes.h
index 2e3de0ae04d1..5542dd00472b 100644
--- a/include/asm-parisc/ropes.h
+++ b/include/asm-parisc/ropes.h
@@ -1,6 +1,8 @@
 #ifndef _ASM_PARISC_ROPES_H_
 #define _ASM_PARISC_ROPES_H_
 
+#include <asm-parisc/parisc-device.h>
+
 #ifdef CONFIG_64BIT
 /* "low end" PA8800 machines use ZX1 chipset: PAT PDC and only run 64-bit */
 #define ZX1_SUPPORT
@@ -231,6 +233,16 @@ static inline int IS_QUICKSILVER(struct parisc_device *d) {
         return (d->id.hversion == QUICKSILVER_HVERS);
 }
 
+static inline int agp_mode_mercury(void __iomem *hpa) {
+        u64 bus_mode;
+
+        bus_mode = readl(hpa + 0x0620);
+        if (bus_mode & 1)
+                return 1;
+
+        return 0;
+}
+
 /*
 ** I/O SAPIC init function
 ** Caller knows where an I/O SAPIC is. LBA has an integrated I/O SAPIC.