[PATCH 24/50] drm: Kill DRM_*MEMORYBARRIER
Daniel Vetter
daniel.vetter at ffwll.ch
Wed Dec 11 02:34:45 PST 2013
The real linux interfaces are soooo much easier on the eyes ...
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/gma500/psb_irq.c | 2 +-
drivers/gpu/drm/mga/mga_drv.h | 2 +-
drivers/gpu/drm/nouveau/nouveau_dma.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_dma.h | 2 +-
drivers/gpu/drm/r128/r128_drv.h | 2 +-
drivers/gpu/drm/radeon/radeon_cp.c | 2 +-
drivers/gpu/drm/radeon/radeon_ring.c | 2 +-
drivers/gpu/drm/savage/savage_bci.c | 6 +++---
drivers/gpu/drm/savage/savage_state.c | 2 +-
drivers/gpu/drm/via/via_dma.c | 4 ++--
drivers/gpu/drm/via/via_dmablit.c | 2 +-
include/drm/drm_os_linux.h | 7 -------
12 files changed, 14 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/gma500/psb_irq.c b/drivers/gpu/drm/gma500/psb_irq.c
index ef00bce9991a..a9bb34704738 100644
--- a/drivers/gpu/drm/gma500/psb_irq.c
+++ b/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;
diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h
index 901e4f935fed..fe453213600a 100644
--- a/drivers/gpu/drm/mga/mga_drv.h
+++ b/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))
diff --git a/drivers/gpu/drm/nouveau/nouveau_dma.c b/drivers/gpu/drm/nouveau/nouveau_dma.c
index 40f91e1e5842..c177272152e2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dma.c
+++ b/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);
diff --git a/drivers/gpu/drm/nouveau/nouveau_dma.h b/drivers/gpu/drm/nouveau/nouveau_dma.h
index 984004d66a6d..dc0e0c5cadb4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dma.h
+++ b/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)
diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h
index 4318bfa845cb..5bf3f5ff805d 100644
--- a/drivers/gpu/drm/r128/r128_drv.h
+++ b/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)
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index d73013e6f58a..bb0d5c3a8311 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/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) {
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index 9214403ae173..ca2d71afeb02 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/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);
}
diff --git a/drivers/gpu/drm/savage/savage_bci.c b/drivers/gpu/drm/savage/savage_bci.c
index 6e673fa968e5..d2b2df9e26f3 100644
--- a/drivers/gpu/drm/savage/savage_bci.c
+++ b/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 +
diff --git a/drivers/gpu/drm/savage/savage_state.c b/drivers/gpu/drm/savage/savage_state.c
index 2d3e56d94be3..c01ad0aeaa58 100644
--- a/drivers/gpu/drm/savage/savage_state.c
+++ b/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. */
diff --git a/drivers/gpu/drm/via/via_dma.c b/drivers/gpu/drm/via/via_dma.c
index 3436fdad22c5..5d4179284964 100644
--- a/drivers/gpu/drm/via/via_dma.c
+++ b/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);
diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_dmablit.c
index 694b9954cbbc..ba33cf679180 100644
--- a/drivers/gpu/drm/via/via_dmablit.c
+++ b/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);
}
diff --git a/include/drm/drm_os_linux.h b/include/drm/drm_os_linux.h
index 2953b1d83022..43008938b6b2 100644
--- a/include/drm/drm_os_linux.h
+++ b/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); \
--
1.8.4.3
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