From e835820e2359952bd42a66137c6b7ab243a5a541 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@linux.ie>
Date: Tue, 3 Apr 2007 19:04:48 +1000
Subject: add initial PCIE GART framework for TTM
---
linux-core/ati_pcigart.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++
linux-core/drmP.h | 3 ++
linux-core/radeon_buffer.c | 7 +++-
3 files changed, 94 insertions(+), 1 deletion(-)
diff --git a/linux-core/ati_pcigart.c b/linux-core/ati_pcigart.c
index bb30dd74..f3f91129 100644
--- a/linux-core/ati_pcigart.c
+++ b/linux-core/ati_pcigart.c
@@ -228,3 +228,88 @@ int drm_ati_pcigart_init(drm_device_t *dev, drm_ati_pcigart_info *gart_info)
return ret;
}
EXPORT_SYMBOL(drm_ati_pcigart_init);
+
+static int ati_pcigart_needs_unbind_cache_adjust(drm_ttm_backend_t *backend)
+{
+ return ((backend->flags & DRM_BE_FLAG_BOUND_CACHED) ? 0 : 1);
+}
+
+static int ati_pcigart_populate(drm_ttm_backend_t *backend,
+ unsigned long num_pages,
+ struct page **pages)
+{
+ ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
+
+ return -1;
+}
+
+static int ati_pcigart_bind_ttm(drm_ttm_backend_t *backend,
+ unsigned long offset,
+ int cached)
+{
+ ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
+
+ return -1;
+}
+
+static int ati_pcigart_unbind_ttm(drm_ttm_backend_t *backend)
+{
+ ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
+
+ return -1;
+}
+
+static void ati_pcigart_clear_ttm(drm_ttm_backend_t *backend)
+{
+ ati_pcigart_ttm_priv *atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
+}
+
+static void ati_pcigart_destroy_ttm(drm_ttm_backend_t *backend)
+{
+ ati_pcigart_ttm_priv *atipci_priv;
+
+ if (backend) {
+ DRM_DEBUG("\n");
+ atipci_priv = (ati_pcigart_ttm_priv *)backend->private;
+ if (atipci_priv) {
+ drm_ctl_free(atipci_priv, sizeof(*atipci_priv), DRM_MEM_MAPPINGS);
+ backend->private = NULL;
+ }
+ if (backend->flags & DRM_BE_FLAG_NEEDS_FREE) {
+ drm_ctl_free(backend, sizeof(*backend), DRM_MEM_MAPPINGS);
+ }
+ }
+}
+
+
+drm_ttm_backend_t *ati_pcigart_init_ttm(struct drm_device *dev,
+ drm_ttm_backend_t *backend)
+{
+ drm_ttm_backend_t *atipci_be;
+ ati_pcigart_ttm_priv *atipci_priv;
+
+ atipci_be = (backend != NULL) ? backend :
+ drm_ctl_calloc(1, sizeof (*atipci_be), DRM_MEM_MAPPINGS);
+
+ if (!atipci_be)
+ return NULL;
+
+ atipci_priv = drm_ctl_calloc(1, sizeof(*atipci_priv), DRM_MEM_MAPPINGS);
+ if (!atipci_priv) {
+ drm_ctl_free(atipci_be, sizeof(*atipci_be), DRM_MEM_MAPPINGS);
+ return NULL;
+ }
+
+ atipci_priv->populated = FALSE;
+ atipci_be->needs_ub_cache_adjust = ati_pcigart_needs_unbind_cache_adjust;
+ atipci_be->populate = ati_pcigart_populate;
+ atipci_be->clear = ati_pcigart_clear_ttm;
+ atipci_be->bind = ati_pcigart_bind_ttm;
+ atipci_be->unbind = ati_pcigart_unbind_ttm;
+ atipci_be->destroy = ati_pcigart_destroy_ttm;
+
+ DRM_FLAG_MASKED(atipci_be->flags, (backend == NULL) ? DRM_BE_FLAG_NEEDS_FREE : 0, DRM_BE_FLAG_NEEDS_FREE);
+ atipci_be->drm_map_type = _DRM_SCATTER_GATHER;
+ return atipci_be;
+}
+EXPORT_SYMBOL(ati_pcigart_init_ttm);
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 648e29bc..b6da6926 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -840,6 +840,9 @@ typedef struct drm_agp_ttm_priv {
} drm_agp_ttm_priv;
#endif
+typedef struct ati_pcigart_ttm_priv {
+ int populated;
+} ati_pcigart_ttm_priv;
static __inline__ int drm_core_check_feature(struct drm_device *dev,
int feature)
diff --git a/linux-core/radeon_buffer.c b/linux-core/radeon_buffer.c
index b525ddfa..d5a1456a 100644
--- a/linux-core/radeon_buffer.c
+++ b/linux-core/radeon_buffer.c
@@ -36,7 +36,12 @@
drm_ttm_backend_t *radeon_create_ttm_backend_entry(drm_device_t * dev)
{
- return drm_agp_init_ttm(dev, NULL);
+ drm_radeon_private_t *dev_priv = dev->dev_private;
+
+ if(dev_priv->flags & RADEON_IS_AGP)
+ return drm_agp_init_ttm(dev, NULL);
+ else
+ return ati_pcigart_init_ttm(dev, NULL);
}
int radeon_fence_types(drm_buffer_object_t *bo, uint32_t * class, uint32_t * type)
--
cgit v1.2.3