First round of AXP patches.

8 files changed, 191 insertions, 5 deletions

diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 9ad83bde7..9a2b125cd 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -33,6 +33,12 @@
 #define _DRM_P_H_
 
 #ifdef __KERNEL__
+#ifdef __alpha__
+/* add include of current.h so that "current" is defined
+ * before static inline funcs in wait.h. Doing this so we
+ * can build the DRM (part of PI DRI). 4/21/2000 S + B */
+#include <asm/current.h>
+#endif /* __alpha__ */
 #include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -44,6 +50,9 @@
 #include <linux/pci.h>
 #include <linux/wrapper.h>
 #include <linux/version.h>
+#ifdef __alpha__
+#include <asm/pgtable.h> /* For pte_wrprotect */
+#endif
 #include <asm/io.h>
 #include <asm/mman.h>
 #include <asm/uaccess.h>
@@ -133,6 +142,71 @@ typedef struct wait_queue *wait_queue_head_t;
 #ifndef __HAVE_ARCH_CMPXCHG
 				/* Include this here so that driver can be
                                    used with older kernels. */
+#if defined(__alpha__)
+static __inline__ unsigned long
+__cmpxchg_u32(volatile int *m, int old, int new)
+{
+	unsigned long prev, cmp;
+
+	__asm__ __volatile__(
+	"1:	ldl_l %0,%2\n"
+	"	cmpeq %0,%3,%1\n"
+	"	beq %1,2f\n"
+	"	mov %4,%1\n"
+	"	stl_c %1,%2\n"
+	"	beq %1,3f\n"
+	"2:	mb\n"
+	".subsection 2\n"
+	"3:	br 1b\n"
+	".previous"
+	: "=&r"(prev), "=&r"(cmp), "=m"(*m)
+	: "r"((long) old), "r"(new), "m"(*m));
+
+	return prev;
+}
+
+static __inline__ unsigned long
+__cmpxchg_u64(volatile long *m, unsigned long old, unsigned long new)
+{
+	unsigned long prev, cmp;
+
+	__asm__ __volatile__(
+	"1:	ldq_l %0,%2\n"
+	"	cmpeq %0,%3,%1\n"
+	"	beq %1,2f\n"
+	"	mov %4,%1\n"
+	"	stq_c %1,%2\n"
+	"	beq %1,3f\n"
+	"2:	mb\n"
+	".subsection 2\n"
+	"3:	br 1b\n"
+	".previous"
+	: "=&r"(prev), "=&r"(cmp), "=m"(*m)
+	: "r"((long) old), "r"(new), "m"(*m));
+
+	return prev;
+}
+
+static __inline__ unsigned long
+__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
+{
+	switch (size) {
+		case 4:
+			return __cmpxchg_u32(ptr, old, new);
+		case 8:
+			return __cmpxchg_u64(ptr, old, new);
+	}
+	return old;
+}
+#define cmpxchg(ptr,o,n)						 \
+  ({									 \
+     __typeof__(*(ptr)) _o_ = (o);					 \
+     __typeof__(*(ptr)) _n_ = (n);					 \
+     (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_,		 \
+				    (unsigned long)_n_, sizeof(*(ptr))); \
+  })
+
+#elif __i386__
 static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 				      unsigned long new, int size)
 {
@@ -163,6 +237,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #define cmpxchg(ptr,o,n)						\
   ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),		\
 				 (unsigned long)(n),sizeof(*(ptr))))
+#endif /* i386 & alpha */
 #endif
 
 				/* Macros to make printk easier */
diff --git a/linux/Makefile.linux b/linux/Makefile.linux
index ecc196bdd..f19994828 100644
--- a/linux/Makefile.linux
+++ b/linux/Makefile.linux
@@ -122,6 +122,7 @@ AGP := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
 	| grep -s 'AGP = ' | cut -d' ' -f3)
 PARAMS := $(shell if fgrep kill_fasync $(TREE)/linux/fs.h \
 	| fgrep -q band; then echo 3; else echo 2; fi)
+MACHINE := $(shell echo `uname -m`)
 ifeq ($(AGP),0)
 AGP := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
 	| grep -s 'AGP_MODULE = ' | cut -d' ' -f3)
@@ -130,7 +131,11 @@ endif
 ifeq ($(AGP),1)
 MODCFLAGS += -DDRM_AGP
 DRMOBJS += agpsupport.o
-MODS += mga.o i810.o
+MODS += mga.o
+ifeq ($(MACHINE),i386)
+MODS += i810.o
+endif
+
 
 MGAOBJS=	mga_drv.o mga_dma.o mga_bufs.o mga_state.o mga_context.o
 MGAHEADERS=	mga_drv.h $(DRMHEADERS)
@@ -142,6 +147,7 @@ endif
 all::;@echo === KERNEL HEADERS IN $(TREE)
 all::;@echo === SMP=${SMP} MODVERSIONS=${MODVERSIONS} AGP=${AGP}
 all::;@echo === kill_fasync has $(PARAMS) parameters
+all::;@echo === Compiling for machine $(MACHINE)
 all:: $(LIBS) $(MODS) $(PROGS)
 endif
 
diff --git a/linux/drmP.h b/linux/drmP.h
index 9ad83bde7..9a2b125cd 100644
--- a/linux/drmP.h
+++ b/linux/drmP.h
@@ -33,6 +33,12 @@
 #define _DRM_P_H_
 
 #ifdef __KERNEL__
+#ifdef __alpha__
+/* add include of current.h so that "current" is defined
+ * before static inline funcs in wait.h. Doing this so we
+ * can build the DRM (part of PI DRI). 4/21/2000 S + B */
+#include <asm/current.h>
+#endif /* __alpha__ */
 #include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -44,6 +50,9 @@
 #include <linux/pci.h>
 #include <linux/wrapper.h>
 #include <linux/version.h>
+#ifdef __alpha__
+#include <asm/pgtable.h> /* For pte_wrprotect */
+#endif
 #include <asm/io.h>
 #include <asm/mman.h>
 #include <asm/uaccess.h>
@@ -133,6 +142,71 @@ typedef struct wait_queue *wait_queue_head_t;
 #ifndef __HAVE_ARCH_CMPXCHG
 				/* Include this here so that driver can be
                                    used with older kernels. */
+#if defined(__alpha__)
+static __inline__ unsigned long
+__cmpxchg_u32(volatile int *m, int old, int new)
+{
+	unsigned long prev, cmp;
+
+	__asm__ __volatile__(
+	"1:	ldl_l %0,%2\n"
+	"	cmpeq %0,%3,%1\n"
+	"	beq %1,2f\n"
+	"	mov %4,%1\n"
+	"	stl_c %1,%2\n"
+	"	beq %1,3f\n"
+	"2:	mb\n"
+	".subsection 2\n"
+	"3:	br 1b\n"
+	".previous"
+	: "=&r"(prev), "=&r"(cmp), "=m"(*m)
+	: "r"((long) old), "r"(new), "m"(*m));
+
+	return prev;
+}
+
+static __inline__ unsigned long
+__cmpxchg_u64(volatile long *m, unsigned long old, unsigned long new)
+{
+	unsigned long prev, cmp;
+
+	__asm__ __volatile__(
+	"1:	ldq_l %0,%2\n"
+	"	cmpeq %0,%3,%1\n"
+	"	beq %1,2f\n"
+	"	mov %4,%1\n"
+	"	stq_c %1,%2\n"
+	"	beq %1,3f\n"
+	"2:	mb\n"
+	".subsection 2\n"
+	"3:	br 1b\n"
+	".previous"
+	: "=&r"(prev), "=&r"(cmp), "=m"(*m)
+	: "r"((long) old), "r"(new), "m"(*m));
+
+	return prev;
+}
+
+static __inline__ unsigned long
+__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
+{
+	switch (size) {
+		case 4:
+			return __cmpxchg_u32(ptr, old, new);
+		case 8:
+			return __cmpxchg_u64(ptr, old, new);
+	}
+	return old;
+}
+#define cmpxchg(ptr,o,n)						 \
+  ({									 \
+     __typeof__(*(ptr)) _o_ = (o);					 \
+     __typeof__(*(ptr)) _n_ = (n);					 \
+     (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_,		 \
+				    (unsigned long)_n_, sizeof(*(ptr))); \
+  })
+
+#elif __i386__
 static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 				      unsigned long new, int size)
 {
@@ -163,6 +237,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
 #define cmpxchg(ptr,o,n)						\
   ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),		\
 				 (unsigned long)(n),sizeof(*(ptr))))
+#endif /* i386 & alpha */
 #endif
 
 				/* Macros to make printk easier */
diff --git a/linux/mga_context.c b/linux/mga_context.c
index d02592740..0ff171730 100644
--- a/linux/mga_context.c
+++ b/linux/mga_context.c
@@ -29,11 +29,11 @@
  *
  */
 
-#include <linux/sched.h>
 
 #define __NO_VERSION__
 #include "drmP.h"
 #include "mga_drv.h"
+#include <linux/sched.h>
 
 static int mga_alloc_queue(drm_device_t *dev)
 {
diff --git a/linux/mga_dma.c b/linux/mga_dma.c
index 28e8811c8..b1ac948f3 100644
--- a/linux/mga_dma.c
+++ b/linux/mga_dma.c
@@ -82,6 +82,7 @@ static void mga_delay(void)
    	return;
 }
 
+#ifdef __i386__
 void mga_flush_write_combine(void)
 {
    	int xchangeDummy;
@@ -92,6 +93,7 @@ void mga_flush_write_combine(void)
 			 " movl $0,%%eax ; cpuid ; pop %%edx ; pop %%ecx ; pop %%ebx ;"
 			 " pop %%eax" : /* no outputs */ :  /* no inputs */ );
 }
+#endif
 
 /* These are two age tags that will never be sent to
  * the hardware */
@@ -427,7 +429,12 @@ void mga_fire_primary(drm_device_t *dev, drm_mga_prim_buf_t *prim)
 		}
 	}
 
+#ifdef __i386__
    	mga_flush_write_combine();
+#endif
+#ifdef __alpha__
+	mb();
+#endif
     	atomic_inc(&dev_priv->pending_bufs);
        	MGA_WRITE(MGAREG_PRIMADDRESS, phys_head | TT_GENERAL);
  	MGA_WRITE(MGAREG_PRIMEND, (phys_head + num_dwords * 4) | use_agp);
@@ -824,7 +831,12 @@ static int mga_dma_initialize(drm_device_t *dev, drm_mga_init_t *init) {
 		 * the status register will be correct
 		 */
 	   
+#ifdef __i386__
 		mga_flush_write_combine();
+#endif
+#ifdef __alpha
+		mb();
+#endif
 	   	MGA_WRITE(MGAREG_PRIMADDRESS, phys_head | TT_GENERAL);
 
 		MGA_WRITE(MGAREG_PRIMEND, ((phys_head + num_dwords * 4) | 
diff --git a/linux/r128_context.c b/linux/r128_context.c
index f11453ba1..388af82a9 100644
--- a/linux/r128_context.c
+++ b/linux/r128_context.c
@@ -28,11 +28,11 @@
  *
  */
 
-#include <linux/sched.h>
 
 #define __NO_VERSION__
 #include "drmP.h"
 #include "r128_drv.h"
+#include <linux/sched.h>
 
 extern drm_ctx_t r128_res_ctx;
 
diff --git a/linux/r128_dma.c b/linux/r128_dma.c
index 16f79c1f6..330dbe637 100644
--- a/linux/r128_dma.c
+++ b/linux/r128_dma.c
@@ -68,6 +68,7 @@ int R128_READ_PLL(drm_device_t *dev, int addr)
 	return R128_READ(R128_CLOCK_CNTL_DATA);
 }
 
+#ifdef __i386__
 static void r128_flush_write_combine(void)
 {
 	int xchangeDummy;
@@ -86,6 +87,7 @@ static void r128_flush_write_combine(void)
 			 "pop %%ebx ;"
 			 "pop %%eax" : /* no outputs */ :  /* no inputs */ );
 }
+#endif
 
 static void r128_status(drm_device_t *dev)
 {
@@ -496,8 +498,13 @@ static int r128_submit_packets_ring_secure(drm_device_t *dev,
 		   dev_priv->ring_start,
 		   write * sizeof(u32));
 
+#ifdef __i386__
 	/* Make sure WC cache has been flushed */
 	r128_flush_write_combine();
+#endif
+#ifdef __alpha
+	mb();
+#endif
 
 	dev_priv->sarea_priv->ring_write = write;
 	R128_WRITE(R128_PM4_BUFFER_DL_WPTR, write);
@@ -599,8 +606,13 @@ static int r128_submit_packets_ring(drm_device_t *dev,
 		   dev_priv->ring_start,
 		   write * sizeof(u32));
 
+#ifdef __i386__
 	/* Make sure WC cache has been flushed */
 	r128_flush_write_combine();
+#endif
+#ifdef __alpha__
+	mb();
+#endif
 
 	dev_priv->sarea_priv->ring_write = write;
 	R128_WRITE(R128_PM4_BUFFER_DL_WPTR, write);
@@ -767,7 +779,13 @@ static int r128_send_vertbufs(drm_device_t *dev, drm_r128_vertex_t *v)
 	}
 
 	/* Make sure WC cache has been flushed (if in PIO mode) */
-	if (!dev_priv->cce_is_bm_mode) r128_flush_write_combine();
+	if (!dev_priv->cce_is_bm_mode) 
+#ifdef __i386__
+	    r128_flush_write_combine();
+#endif
+#ifdef __alpha__
+	    mb();
+#endif
 
 	/* FIXME: Add support for sending vertex buffer to the CCE here
 	   instead of in client code.  The v->prim holds the primitive
diff --git a/linux/tdfx_context.c b/linux/tdfx_context.c
index c8d6e50ea..55ffdeecd 100644
--- a/linux/tdfx_context.c
+++ b/linux/tdfx_context.c
@@ -30,11 +30,11 @@
  * 
  */
 
-#include <linux/sched.h>
 
 #define __NO_VERSION__
 #include "drmP.h"
 #include "tdfx_drv.h"
+#include <linux/sched.h>
 
 extern drm_ctx_t tdfx_res_ctx;