drm: Kill DRM_*MEMORYBARRIER

The real linux interfaces are soooo much easier on the eyes ...
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NDave Airlie <airlied@redhat.com>

drivers/gpu/drm/gma500/psb_irq.c

@@ -253,7 +253,7 @@ irqreturn_t psb_irq_handler(int irq, void *arg)
 
 	PSB_WVDC32(vdc_stat, PSB_INT_IDENTITY_R);
 	(void) PSB_RVDC32(PSB_INT_IDENTITY_R);
-	DRM_READMEMORYBARRIER();
+	rmb();
 
 	if (!handled)
 		return IRQ_NONE;

drivers/gpu/drm/mga/mga_drv.h

@@ -193,7 +193,7 @@ extern void mga_driver_irq_uninstall(struct drm_device *dev);
 extern long mga_compat_ioctl(struct file *filp, unsigned int cmd,
 			     unsigned long arg);
 
-#define mga_flush_write_combine()	DRM_WRITEMEMORYBARRIER()
+#define mga_flush_write_combine()	wmb()
 
 #define MGA_READ8(reg)		DRM_READ8(dev_priv->mmio, (reg))
 #define MGA_READ(reg)		DRM_READ32(dev_priv->mmio, (reg))

drivers/gpu/drm/nouveau/nouveau_dma.c

@@ -100,7 +100,7 @@ nv50_dma_push(struct nouveau_channel *chan, struct nouveau_bo *bo,
 
 	chan->dma.ib_put = (chan->dma.ib_put + 1) & chan->dma.ib_max;
 
-	DRM_MEMORYBARRIER();
+	mb();
 	/* Flush writes. */
 	nouveau_bo_rd32(pb, 0);
 

drivers/gpu/drm/nouveau/nouveau_dma.h

@@ -155,7 +155,7 @@ BEGIN_IMC0(struct nouveau_channel *chan, int subc, int mthd, u16 data)
 }
 
 #define WRITE_PUT(val) do {                                                    \
-	DRM_MEMORYBARRIER();                                                   \
+	mb();                                                   \
 	nouveau_bo_rd32(chan->push.buffer, 0);                                 \
 	nv_wo32(chan->object, chan->user_put, ((val) << 2) + chan->push.vma.offset);  \
 } while (0)

drivers/gpu/drm/r128/r128_drv.h

@@ -514,7 +514,7 @@ do {									\
 	if (R128_VERBOSE)						\
 		DRM_INFO("COMMIT_RING() tail=0x%06x\n",			\
 			 dev_priv->ring.tail);				\
-	DRM_MEMORYBARRIER();						\
+	mb();						\
 	R128_WRITE(R128_PM4_BUFFER_DL_WPTR, dev_priv->ring.tail);	\
 	R128_READ(R128_PM4_BUFFER_DL_WPTR);				\
 } while (0)

drivers/gpu/drm/radeon/radeon_cp.c

@@ -2228,7 +2228,7 @@ void radeon_commit_ring(drm_radeon_private_t *dev_priv)
 
 	dev_priv->ring.tail &= dev_priv->ring.tail_mask;
 
-	DRM_MEMORYBARRIER();
+	mb();
 	GET_RING_HEAD( dev_priv );
 
 	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600) {

drivers/gpu/drm/radeon/radeon_ring.c

@@ -463,7 +463,7 @@ void radeon_ring_commit(struct radeon_device *rdev, struct radeon_ring *ring)
 	while (ring->wptr & ring->align_mask) {
 		radeon_ring_write(ring, ring->nop);
 	}
-	DRM_MEMORYBARRIER();
+	mb();
 	radeon_ring_set_wptr(rdev, ring);
 }
 

drivers/gpu/drm/savage/savage_bci.c

@@ -49,7 +49,7 @@ savage_bci_wait_fifo_shadow(drm_savage_private_t * dev_priv, unsigned int n)
 #endif
 
 	for (i = 0; i < SAVAGE_DEFAULT_USEC_TIMEOUT; i++) {
-		DRM_MEMORYBARRIER();
+		mb();
 		status = dev_priv->status_ptr[0];
 		if ((status & mask) < threshold)
 			return 0;
@@ -123,7 +123,7 @@ savage_bci_wait_event_shadow(drm_savage_private_t * dev_priv, uint16_t e)
 	int i;
 
 	for (i = 0; i < SAVAGE_EVENT_USEC_TIMEOUT; i++) {
-		DRM_MEMORYBARRIER();
+		mb();
 		status = dev_priv->status_ptr[1];
 		if ((((status & 0xffff) - e) & 0xffff) <= 0x7fff ||
 		    (status & 0xffff) == 0)
@@ -449,7 +449,7 @@ static void savage_dma_flush(drm_savage_private_t * dev_priv)
 		}
 	}
 
-	DRM_MEMORYBARRIER();
+	mb();
 
 	/* do flush ... */
 	phys_addr = dev_priv->cmd_dma->offset +

drivers/gpu/drm/savage/savage_state.c

@@ -1032,7 +1032,7 @@ int savage_bci_cmdbuf(struct drm_device *dev, void *data, struct drm_file *file_
 
 	/* Make sure writes to DMA buffers are finished before sending
 	 * DMA commands to the graphics hardware. */
-	DRM_MEMORYBARRIER();
+	mb();
 
 	/* Coming from user space. Don't know if the Xserver has
 	 * emitted wait commands. Assuming the worst. */

drivers/gpu/drm/via/via_dma.c

@@ -60,7 +60,7 @@
 	dev_priv->dma_low += 8;					\
 }
 
-#define via_flush_write_combine() DRM_MEMORYBARRIER()
+#define via_flush_write_combine() mb()
 
 #define VIA_OUT_RING_QW(w1, w2)	do {		\
 	*vb++ = (w1);				\
@@ -543,7 +543,7 @@ static void via_cmdbuf_start(drm_via_private_t *dev_priv)
 
 	VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi);
 	VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo);
-	DRM_WRITEMEMORYBARRIER();
+	wmb();
 	VIA_WRITE(VIA_REG_TRANSPACE, command | HC_HAGPCMNT_MASK);
 	VIA_READ(VIA_REG_TRANSPACE);
 

drivers/gpu/drm/via/via_dmablit.c

@@ -217,7 +217,7 @@ via_fire_dmablit(struct drm_device *dev, drm_via_sg_info_t *vsg, int engine)
 	VIA_WRITE(VIA_PCI_DMA_MR0  + engine*0x04, VIA_DMA_MR_CM | VIA_DMA_MR_TDIE);
 	VIA_WRITE(VIA_PCI_DMA_BCR0 + engine*0x10, 0);
 	VIA_WRITE(VIA_PCI_DMA_DPR0 + engine*0x10, vsg->chain_start);
-	DRM_WRITEMEMORYBARRIER();
+	wmb();
 	VIA_WRITE(VIA_PCI_DMA_CSR0 + engine*0x04, VIA_DMA_CSR_DE | VIA_DMA_CSR_TS);
 	VIA_READ(VIA_PCI_DMA_CSR0 + engine*0x04);
 }

include/drm/drm_os_linux.h

@@ -35,19 +35,12 @@ static inline void writeq(u64 val, void __iomem *reg)
 #define DRM_WRITE16(map, offset, val)   writew(val, ((void __iomem *)(map)->handle) + (offset))
 /** Write a dword into a MMIO region */
 #define DRM_WRITE32(map, offset, val)	writel(val, ((void __iomem *)(map)->handle) + (offset))
-/** Read memory barrier */
 
 /** Read a qword from a MMIO region - be careful using these unless you really understand them */
 #define DRM_READ64(map, offset)		readq(((void __iomem *)(map)->handle) + (offset))
 /** Write a qword into a MMIO region */
 #define DRM_WRITE64(map, offset, val)	writeq(val, ((void __iomem *)(map)->handle) + (offset))
 
-#define DRM_READMEMORYBARRIER()		rmb()
-/** Write memory barrier */
-#define DRM_WRITEMEMORYBARRIER()	wmb()
-/** Read/write memory barrier */
-#define DRM_MEMORYBARRIER()		mb()
-
 #define DRM_WAIT_ON( ret, queue, timeout, condition )		\
 do {								\
 	DECLARE_WAITQUEUE(entry, current);			\