From 18a6d1c9c380b6b19524f654d9173a79e19aa1df Mon Sep 17 00:00:00 2001
From: Ben Skeggs <skeggsb@gmail.com>
Date: Mon, 25 Jun 2007 15:16:19 +1000
Subject: nouveau: simplify PRAMIN access

---
 shared-core/nouveau_drv.h   | 18 +++++++++++-------
 shared-core/nouveau_mem.c   | 32 --------------------------------
 shared-core/nouveau_state.c | 18 ++++++++++++++++--
 3 files changed, 27 insertions(+), 41 deletions(-)

(limited to 'shared-core')

diff --git a/shared-core/nouveau_drv.h b/shared-core/nouveau_drv.h
index f549e600..b2ddf0a6 100644
--- a/shared-core/nouveau_drv.h
+++ b/shared-core/nouveau_drv.h
@@ -220,11 +220,6 @@ extern struct mem_block* nouveau_instmem_alloc(struct drm_device *dev,
 					       uint32_t size, uint32_t align);
 extern void              nouveau_instmem_free(struct drm_device *dev,
 					      struct mem_block *block);
-extern uint32_t          nouveau_instmem_r32(drm_nouveau_private_t *dev_priv,
-					     struct mem_block *mem, int index);
-extern void              nouveau_instmem_w32(drm_nouveau_private_t *dev_priv,
-					     struct mem_block *mem, int index,
-					     uint32_t val);
 
 /* nouveau_notifier.c */
 extern int  nouveau_notifier_init_channel(drm_device_t *, int channel, DRMFILE);
@@ -381,8 +376,17 @@ extern long nouveau_compat_ioctl(struct file *filp, unsigned int cmd,
 #define NV_WRITE(reg,val)   DRM_WRITE32( dev_priv->mmio, (reg), (val) )
 #endif
 
-#define INSTANCE_WR(mem,ofs,val) nouveau_instmem_w32(dev_priv,(mem),(ofs),(val))
-#define INSTANCE_RD(mem,ofs)     nouveau_instmem_r32(dev_priv,(mem),(ofs))
+/* PRAMIN access */
+#if defined(__powerpc__)
+#define NV_RI32(o) in_be32((void __iomem *)(dev_priv->ramin)->handle+(o))
+#define NV_WI32(o,v) out_be32((void __iomem*)(dev_priv->ramin)->handle+(o), (v))
+#else
+#define NV_RI32(o) DRM_READ32(dev_priv->ramin, (o))
+#define NV_WI32(o,v) DRM_WRITE32(dev_priv->ramin, (o), (v))
+#endif
+
+#define INSTANCE_RD(o,i) NV_RI32((o)->start + ((i)<<2))
+#define INSTANCE_WR(o,i,v) NV_WI32((o)->start + ((i)<<2), (v))
 
 #endif /* __NOUVEAU_DRV_H__ */
 
diff --git a/shared-core/nouveau_mem.c b/shared-core/nouveau_mem.c
index edfc9d3f..4c6d0d5c 100644
--- a/shared-core/nouveau_mem.c
+++ b/shared-core/nouveau_mem.c
@@ -602,38 +602,6 @@ void nouveau_instmem_free(struct drm_device *dev, struct mem_block *block)
 	}
 }
 
-uint32_t nouveau_instmem_r32(drm_nouveau_private_t *dev_priv,
-			     struct mem_block *mem, int index)
-{
-	uint32_t ofs = (uint32_t)mem->start + (index<<2);
-
-	if (dev_priv->ramin) {
-#if defined(__powerpc__)
-		return in_be32((void __iomem *)(dev_priv->ramin)->handle + ofs);
-#else
-		return DRM_READ32(dev_priv->ramin, ofs);
-#endif
-	} else {
-		return NV_READ(NV_RAMIN+ofs);
-	}
-}
-
-void nouveau_instmem_w32(drm_nouveau_private_t *dev_priv,
-			 struct mem_block *mem, int index, uint32_t val)
-{
-	uint32_t ofs = (uint32_t)mem->start + (index<<2);
-
-	if (dev_priv->ramin) {
-#if defined(__powerpc__)
-		out_be32((void __iomem *)(dev_priv->ramin)->handle + ofs, val);
-#else
-		DRM_WRITE32(dev_priv->ramin, ofs, val);
-#endif
-	} else {
-		NV_WRITE(NV_RAMIN+ofs, val);
-	}
-}
-
 /*
  * Ioctls
  */
diff --git a/shared-core/nouveau_state.c b/shared-core/nouveau_state.c
index 0cb82355..94d8081c 100644
--- a/shared-core/nouveau_state.c
+++ b/shared-core/nouveau_state.c
@@ -51,6 +51,7 @@ static int nouveau_init_card_mappings(drm_device_t *dev)
 	DRM_DEBUG("regs mapped ok at 0x%lx\n", dev_priv->mmio->offset);
 
 	/* map larger RAMIN aperture on NV40 cards */
+	dev_priv->ramin = NULL;
 	if (dev_priv->card_type >= NV_40) {
 		int ramin_resource = 2;
 		if (drm_get_resource_len(dev, ramin_resource) == 0)
@@ -66,8 +67,21 @@ static int nouveau_init_card_mappings(drm_device_t *dev)
 				  "limited instance memory available\n");
 			dev_priv->ramin = NULL;
 		}
-	} else
-		dev_priv->ramin = NULL;
+	}
+
+	/* On older cards (or if the above failed), create a map covering
+	 * the BAR0 PRAMIN aperture */
+	if (!dev_priv->ramin) {
+		ret = drm_addmap(dev,
+				 drm_get_resource_start(dev, 0) + NV_RAMIN,
+				 (1*1024*1024),
+				 _DRM_REGISTERS, _DRM_READ_ONLY,
+				 &dev_priv->ramin);
+		if (ret) {
+			DRM_ERROR("Failed to map BAR0 PRAMIN: %d\n", ret);
+			return ret;
+		}
+	}
 
 	return 0;
 }
-- 
cgit v1.2.3