nouveau: Add notifier support functions

7 files changed, 179 insertions, 8 deletions

diff --git a/src/mesa/drivers/dri/nouveau/Makefile b/src/mesa/drivers/dri/nouveau/Makefile
index 1a76169156a..962978dc7fa 100644
--- a/src/mesa/drivers/dri/nouveau/Makefile
+++ b/src/mesa/drivers/dri/nouveau/Makefile
@@ -24,6 +24,7 @@ DRIVER_SOURCES = \
 	nouveau_shader_2.c       \
 	nouveau_tex.c            \
 	nouveau_swtcl.c          \
+	nouveau_sync.c           \
 	nv10_swtcl.c             \
 	nv10_state.c             \
 	nv20_state.c             \
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_context.c b/src/mesa/drivers/dri/nouveau/nouveau_context.c
index ac940ac595f..7aca31d0d3e 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_context.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_context.c
@@ -222,6 +222,7 @@ GLboolean nouveauCreateContext( const __GLcontextModes *glVisual,
 			break;
 	}
 
+	nouveauSyncInitFuncs(ctx);
 	nmesa->hw_func.InitCard(nmesa);
         nouveauInitState(ctx);
 
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_context.h b/src/mesa/drivers/dri/nouveau/nouveau_context.h
index ea28506b742..f54ac9a7c8d 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_context.h
+++ b/src/mesa/drivers/dri/nouveau/nouveau_context.h
@@ -40,6 +40,7 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "nouveau_state_cache.h"
 #include "nouveau_buffers.h"
 #include "nouveau_shader.h"
+#include "nouveau_sync.h"
 
 #include "xmlconfig.h"
 
@@ -101,6 +102,9 @@ typedef struct nouveau_context {
 	uint64_t vram_phys;
 	uint64_t agp_phys;
 
+	/* Channel synchronisation */
+	nouveau_notifier *syncNotifier;
+
 	/* Additional hw-specific functions */
 	nouveau_hw_func hw_func;
 
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_object.c b/src/mesa/drivers/dri/nouveau/nouveau_object.c
index dda547c916e..cf7284d2d54 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_object.c
+++ b/src/mesa/drivers/dri/nouveau/nouveau_object.c
@@ -4,7 +4,7 @@
 #include "nouveau_reg.h"
 
 
-static GLboolean nouveauCreateContextObject(nouveauContextPtr nmesa, int handle, int class, uint32_t flags, uint32_t dma_in, uint32_t dma_out, uint32_t dma_notifier)
+GLboolean nouveauCreateContextObject(nouveauContextPtr nmesa, int handle, int class, uint32_t flags, uint32_t dma_in, uint32_t dma_out, uint32_t dma_notifier)
 {
 	drm_nouveau_object_init_t cto;
 	int ret;
@@ -20,12 +20,12 @@ static GLboolean nouveauCreateContextObject(nouveauContextPtr nmesa, int handle,
 	return ret == 0;
 }
 
-static GLboolean nouveauCreateDmaObject(nouveauContextPtr nmesa,
-      					uint32_t handle,
-      					uint32_t offset,
-					uint32_t size,
-					int	 target,
-					int	 access)
+GLboolean nouveauCreateDmaObject(nouveauContextPtr nmesa,
+      				 uint32_t handle,
+				 uint32_t offset,
+				 uint32_t size,
+				 int	  target,
+				 int	  access)
 {
 	drm_nouveau_dma_object_init_t dma;
 	int ret;
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_object.h b/src/mesa/drivers/dri/nouveau/nouveau_object.h
index a49a39719ba..87f2dc9ae75 100644
--- a/src/mesa/drivers/dri/nouveau/nouveau_object.h
+++ b/src/mesa/drivers/dri/nouveau/nouveau_object.h
@@ -12,7 +12,8 @@ enum DMAObjects {
 	NvCtxSurf2D		= 0x80000020,
 	NvImageBlit		= 0x80000021,
 	NvDmaFB			= 0xD0FB0001,
-	NvDmaAGP		= 0xD0AA0001
+	NvDmaAGP		= 0xD0AA0001,
+	NvSyncNotify		= 0xD0000001
 };
 
 enum DMASubchannel {
@@ -22,4 +23,17 @@ enum DMASubchannel {
 };
 
 extern void nouveauObjectOnSubchannel(nouveauContextPtr nmesa, int subchannel, int handle);
+
+extern GLboolean nouveauCreateContextObject(nouveauContextPtr nmesa,
+      					    int handle, int class,
+					    uint32_t flags,
+					    uint32_t dma_in,
+					    uint32_t dma_out,
+					    uint32_t dma_notifier);
+extern GLboolean nouveauCreateDmaObject(nouveauContextPtr nmesa,
+      					uint32_t handle,
+					uint32_t offset,
+					uint32_t size,
+					int      target,
+					int      access);
 #endif
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_sync.c b/src/mesa/drivers/dri/nouveau/nouveau_sync.c
new file mode 100644
index 00000000000..698f778c4bd
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nouveau_sync.c
@@ -0,0 +1,115 @@
+#include "vblank.h" /* for DO_USLEEP */
+
+#include "nouveau_context.h"
+#include "nouveau_buffers.h"
+#include "nouveau_object.h"
+#include "nouveau_fifo.h"
+#include "nouveau_reg.h"
+#include "nouveau_msg.h"
+#include "nouveau_sync.h"
+
+nouveau_notifier *
+nouveau_notifier_new(GLcontext *ctx, GLuint handle)
+{
+	nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
+	nouveau_notifier *notifier;
+
+	notifier = CALLOC_STRUCT(nouveau_notifier_t);
+	if (!notifier)
+		return NULL;
+
+	notifier->mem = nouveau_mem_alloc(ctx, NOUVEAU_MEM_FB, 32, 0);
+	if (!notifier->mem) {
+		FREE(notifier);
+		return NULL;
+	}
+
+	if (!nouveauCreateDmaObject(nmesa, handle, notifier->mem->offset,
+						   notifier->mem->size,
+						   0 /* NV_DMA_TARGET_FB */,
+						   0 /* NV_DMA_ACCESS_RW */)) {
+		nouveau_mem_free(ctx, notifier->mem);
+		FREE(notifier);
+		return NULL;
+	}
+
+	notifier->handle = handle;
+	return notifier;
+}
+
+void
+nouveau_notifier_destroy(GLcontext *ctx, nouveau_notifier *notifier)
+{
+	/*XXX: free DMA object.. */
+	nouveau_mem_free(ctx, notifier->mem);
+	FREE(notifier);
+}
+
+void
+nouveau_notifier_reset(nouveau_notifier *notifier)
+{
+	volatile GLuint *n = notifier->mem->map;
+
+	n[NV_NOTIFY_TIME_0      /4] = 0x00000000;
+	n[NV_NOTIFY_TIME_1      /4] = 0x00000000;
+	n[NV_NOTIFY_RETURN_VALUE/4] = 0x00000000;
+	n[NV_NOTIFY_STATE       /4] = (NV_NOTIFY_STATE_STATUS_IN_PROCESS <<
+				       NV_NOTIFY_STATE_STATUS_SHIFT);
+}
+
+GLboolean
+nouveau_notifier_wait_status(nouveau_notifier *notifier, GLuint status,
+							 GLuint timeout)
+{
+	volatile GLuint *n = notifier->mem->map;
+	unsigned int time = 0;
+
+	while (time <= timeout) {
+		if (n[NV_NOTIFY_STATE] & NV_NOTIFY_STATE_ERROR_CODE_MASK) {
+			MESSAGE("Notifier returned error: 0x%04x\n",
+					n[NV_NOTIFY_STATE] &
+					NV_NOTIFY_STATE_ERROR_CODE_MASK);
+			return GL_FALSE;
+		}
+
+		if (((n[NV_NOTIFY_STATE] & NV_NOTIFY_STATE_STATUS_MASK) >>
+				NV_NOTIFY_STATE_STATUS_SHIFT) == status)
+			return GL_TRUE;
+
+		if (timeout) {
+			DO_USLEEP(1);
+			time++;
+		}
+	}
+
+	MESSAGE("Notifier timed out\n");
+	return GL_FALSE;
+}
+
+void
+nouveau_notifier_wait_nop(GLcontext *ctx, nouveau_notifier *notifier,
+					  GLuint subc)
+{
+	nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
+	GLboolean ret;
+
+	nouveau_notifier_reset(notifier);
+
+	BEGIN_RING_SIZE(subc, NV_NOTIFY, 1);
+	OUT_RING       (NV_NOTIFY_STYLE_WRITE_ONLY);
+	BEGIN_RING_SIZE(subc, NV_NOP, 1);
+	OUT_RING       (0);
+
+	ret = nouveau_notifier_wait_status(notifier,
+					   NV_NOTIFY_STATE_STATUS_COMPLETED,
+					   0 /* no timeout */);
+	if (ret) MESSAGE("wait on notifier failed\n");
+}
+
+void nouveauSyncInitFuncs(GLcontext *ctx)
+{
+	nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
+
+	nmesa->syncNotifier = nouveau_notifier_new(ctx, NvSyncNotify);
+}
+
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_sync.h b/src/mesa/drivers/dri/nouveau/nouveau_sync.h
new file mode 100644
index 00000000000..b20c2565ca7
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nouveau_sync.h
@@ -0,0 +1,36 @@
+#ifndef __NOUVEAU_SYNC_H__
+#define __NOUVEAU_SYNC_H__
+
+#include "nouveau_buffers.h"
+
+#define NV_NOTIFY_TIME_0                                              0x00000000
+#define NV_NOTIFY_TIME_1                                              0x00000004
+#define NV_NOTIFY_RETURN_VALUE                                        0x00000008
+#define NV_NOTIFY_STATE                                               0x0000000C
+#define NV_NOTIFY_STATE_STATUS_MASK                                   0xFF000000
+#define NV_NOTIFY_STATE_STATUS_SHIFT                                          24
+#define NV_NOTIFY_STATE_STATUS_COMPLETED                                    0x00
+#define NV_NOTIFY_STATE_STATUS_IN_PROCESS                                   0x01
+#define NV_NOTIFY_STATE_ERROR_CODE_MASK                               0x0000FFFF
+#define NV_NOTIFY_STATE_ERROR_CODE_SHIFT                                       0
+
+/* Methods that (hopefully) all objects have */
+#define NV_NOP                                                        0x00000100
+#define NV_NOTIFY                                                     0x00000104
+#define NV_NOTIFY_STYLE_WRITE_ONLY                                             0
+
+typedef struct nouveau_notifier_t {
+	GLuint       handle;
+	nouveau_mem *mem;
+} nouveau_notifier;
+
+extern nouveau_notifier *nouveau_notifier_new(GLcontext *, GLuint handle);
+extern void nouveau_notifier_destroy(GLcontext *, nouveau_notifier *);
+extern void nouveau_notifier_reset(nouveau_notifier *);
+extern GLboolean nouveau_notifier_wait_status(nouveau_notifier *r,
+					      GLuint status, GLuint timeout);
+extern void nouveau_notifier_wait_nop(GLcontext *ctx,
+      				      nouveau_notifier *, GLuint subc);
+
+extern void nouveauSyncInitFuncs(GLcontext *ctx);
+#endif