nouveau: Fix endianness with new context program loader

When switching to request_firmware() to load the context programs,
some endian fixes need to be applied. This makes it work again on
my quad g5 nvidia 6600.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 12 insertions, 8 deletions

diff --git a/drivers/gpu/drm/nouveau/nv40_graph.c b/drivers/gpu/drm/nouveau/nv40_graph.c
index d3e0a2a6acf8..7e8547cb5833 100644
--- a/drivers/gpu/drm/nouveau/nv40_graph.c
+++ b/drivers/gpu/drm/nouveau/nv40_graph.c
@@ -252,8 +252,9 @@ nv40_grctx_init(struct drm_device *dev)
                 memcpy(pgraph->ctxprog, fw->data, fw->size);
 
                 cp = pgraph->ctxprog;
-                if (cp->signature != 0x5043564e || cp->version != 0 ||
-                    cp->length != ((fw->size - 7) / 4)) {
+                if (le32_to_cpu(cp->signature) != 0x5043564e ||
+                    cp->version != 0 ||
+                    le16_to_cpu(cp->length) != ((fw->size - 7) / 4)) {
                         NV_ERROR(dev, "ctxprog invalid\n");
                         release_firmware(fw);
                         nv40_grctx_fini(dev);
@@ -281,8 +282,9 @@ nv40_grctx_init(struct drm_device *dev)
                 memcpy(pgraph->ctxvals, fw->data, fw->size);
 
                 cv = (void *)pgraph->ctxvals;
-                if (cv->signature != 0x5643564e || cv->version != 0 ||
-                    cv->length != ((fw->size - 9) / 8)) {
+                if (le32_to_cpu(cv->signature) != 0x5643564e ||
+                    cv->version != 0 ||
+                    le32_to_cpu(cv->length) != ((fw->size - 9) / 8)) {
                         NV_ERROR(dev, "ctxvals invalid\n");
                         release_firmware(fw);
                         nv40_grctx_fini(dev);
@@ -294,8 +296,9 @@ nv40_grctx_init(struct drm_device *dev)
         cp = pgraph->ctxprog;
 
         nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0);
-        for (i = 0; i < cp->length; i++)
-                nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA, cp->data[i]);
+        for (i = 0; i < le16_to_cpu(cp->length); i++)
+                nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA,
+                        le32_to_cpu(cp->data[i]));
 
         pgraph->accel_blocked = false;
         return 0;
@@ -329,8 +332,9 @@ nv40_grctx_vals_load(struct drm_device *dev, struct nouveau_gpuobj *ctx)
         if (!cv)
                 return;
 
-        for (i = 0; i < cv->length; i++)
-                nv_wo32(dev, ctx, cv->data[i].offset, cv->data[i].value);
+        for (i = 0; i < le32_to_cpu(cv->length); i++)
+                nv_wo32(dev, ctx, le32_to_cpu(cv->data[i].offset),
+                        le32_to_cpu(cv->data[i].value));
 }
 
 /*