AGPGART preliminary SiS648 support - fixed and shrunk

diff -urN -X dontdiff linux-2.6.1/drivers/char/agp/agp.h linux-2.6.1.agp648/drivers/char/agp/agp.h
@@ -402,6 +402,16 @@
 void get_agp_version(struct agp_bridge_data *bridge);
 unsigned long agp_generic_mask_memory(unsigned long addr, int type);
 
+/* generic routines for agp>=3 */
+int agp3_generic_fetch_size(void);
+void agp3_generic_tlbflush(struct agp_memory *mem);
+int agp3_generic_configure(void);
+void agp3_generic_cleanup(void);
+
+/* aperture sizes have been standardised since v3 */
+#define AGP_GENERIC_SIZES_ENTRIES 11
+extern struct aper_size_info_16 agp3_generic_sizes[];
+
 extern int agp_off;
 extern int agp_try_unsupported_boot;
 

@@ -410,13 +420,17 @@
 #define AGPCMD			0x8
 #define AGPNISTAT		0xc
 #define AGPCTRL                 0x10
+#define AGPAPSIZE               0x14
 #define AGPNEPG			0x16
+#define AGPGARTLO               0x18
+#define AGPGARTHI               0x1c
 #define AGPNICMD		0x20
 
 #define AGP_MAJOR_VERSION_SHIFT	(20)
 #define AGP_MINOR_VERSION_SHIFT	(16)
 
 #define AGPSTAT_RQ_DEPTH	(0xff000000)
+#define AGPSTAT_RQ_DEPTH_SHIFT  24
 
 #define AGPSTAT_CAL_MASK	(1<<12|1<<11|1<<10)
 #define AGPSTAT_ARQSZ		(1<<15|1<<14|1<<13)

@@ -435,4 +449,7 @@
 #define AGPSTAT3_8X		(1<<1)
 #define AGPSTAT3_4X		(1)
 
+#define AGPCTRL_APERENB         (1<<8)
+#define AGPCTRL_GTLBEN          (1<<7)
+
 #endif				/* _AGP_BACKEND_PRIV_H */

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