[PARISC] Add support for Quicksilver AGPGART

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

include/asm-parisc/agp.h

@@ -0,0 +1,25 @@
+#ifndef _ASM_PARISC_AGP_H
+#define _ASM_PARISC_AGP_H
+
+/*
+ * PARISC specific AGP definitions.
+ * Copyright (c) 2006 Kyle McMartin <kyle@parisc-linux.org>
+ *
+ */
+
+#define map_page_into_agp(page)		/* nothing */
+#define unmap_page_from_agp(page)	/* nothing */
+#define flush_agp_mappings()		/* nothing */
+#define flush_agp_cache()		mb()
+
+/* Convert a physical address to an address suitable for the GART. */
+#define phys_to_gart(x) (x)
+#define gart_to_phys(x) (x)
+
+/* GATT allocation. Returns/accepts GATT kernel virtual address. */
+#define alloc_gatt_pages(order)		\
+	((char *)__get_free_pages(GFP_KERNEL, (order)))
+#define free_gatt_pages(table, order)	\
+	free_pages((unsigned long)(table), (order))
+
+#endif /* _ASM_PARISC_AGP_H */

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.