Apply patch from Alan Hourihane to temporarily allow compilation on Alpha

(the driver has not been tested on Alpha -- this just makes it compile)

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 +429,9 @@ void mga_fire_primary(drm_device_t *dev, drm_mga_prim_buf_t *prim)
 		}
 	}
 
+#ifdef __i386__
    	mga_flush_write_combine();
+#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 +828,9 @@ 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
 	   	MGA_WRITE(MGAREG_PRIMADDRESS, phys_head | TT_GENERAL);
 
 		MGA_WRITE(MGAREG_PRIMEND, ((phys_head + num_dwords * 4) | 

linux/mga_state.c

@@ -820,7 +820,9 @@ int mga_clear_bufs(struct inode *inode, struct file *filp,
 	mga_dma_dispatch_clear(dev, clear.flags,
 			       clear.clear_color, clear.clear_depth);
 	PRIMUPDATE(dev_priv);
+#ifdef __i386__
 	mga_flush_write_combine();
+#endif
 	mga_dma_schedule(dev, 1);
 	return 0;
 }
@@ -850,7 +852,9 @@ int mga_swap_bufs(struct inode *inode, struct file *filp,
 	PRIMUPDATE(dev_priv);
 	set_bit(MGA_BUF_SWAP_PENDING,
 		&dev_priv->current_prim->buffer_status);
+#ifdef __i386__
 	mga_flush_write_combine();
+#endif
 	mga_dma_schedule(dev, 1);
 	return 0;
 }
@@ -898,7 +902,9 @@ int mga_iload(struct inode *inode, struct file *filp,
 	AGEBUF(dev_priv, buf_priv);
 	buf_priv->discard = 1;
 	mga_freelist_put(dev, buf);
+#ifdef __i386__
 	mga_flush_write_combine();
+#endif
 	mga_dma_schedule(dev, 1);
 	return 0;
 }
@@ -946,7 +952,9 @@ int mga_vertex(struct inode *inode, struct file *filp,
 	mga_dma_dispatch_vertex(dev, buf);
 
 	PRIMUPDATE(dev_priv);
+#ifdef __i386__
 	mga_flush_write_combine();
+#endif
 	mga_dma_schedule(dev, 1);
 	return 0;
 }
@@ -993,7 +1001,9 @@ int mga_indices(struct inode *inode, struct file *filp,
 	mga_dma_dispatch_indices(dev, buf, indices.start, indices.end);
 
 	PRIMUPDATE(dev_priv);
+#ifdef __i386__
 	mga_flush_write_combine();
+#endif
 	mga_dma_schedule(dev, 1);
 	return 0;
 }

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 +498,10 @@ 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
 
 	dev_priv->sarea_priv->ring_write = write;
 	R128_WRITE(R128_PM4_BUFFER_DL_WPTR, write);
@@ -599,8 +603,10 @@ 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
 
 	dev_priv->sarea_priv->ring_write = write;
 	R128_WRITE(R128_PM4_BUFFER_DL_WPTR, write);
@@ -766,8 +772,10 @@ static int r128_send_vertbufs(drm_device_t *dev, drm_r128_vertex_t *v)
 		r128_mark_vertbufs_done(dev);
 	}
 
+#ifdef __i386__
 	/* Make sure WC cache has been flushed (if in PIO mode) */
 	if (!dev_priv->cce_is_bm_mode) r128_flush_write_combine();
+#endif
 
 	/* FIXME: Add support for sending vertex buffer to the CCE here
 	   instead of in client code.  The v->prim holds the primitive