1 files changed, 161 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_grctx.c b/drivers/gpu/drm/nouveau/nouveau_grctx.c
new file mode 100644
index 000000000000..419f4c2b3b89
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_grctx.c
@@ -0,0 +1,161 @@
+/*
+ * Copyright 2009 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+
+#include <linux/firmware.h>
+
+#include "drmP.h"
+#include "nouveau_drv.h"
+
+struct nouveau_ctxprog {
+        uint32_t signature;
+        uint8_t  version;
+        uint16_t length;
+        uint32_t data[];
+} __attribute__ ((packed));
+
+struct nouveau_ctxvals {
+        uint32_t signature;
+        uint8_t  version;
+        uint32_t length;
+        struct {
+                uint32_t offset;
+                uint32_t value;
+        } data[];
+} __attribute__ ((packed));
+
+int
+nouveau_grctx_prog_load(struct drm_device *dev)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
+        const int chipset = dev_priv->chipset;
+        const struct firmware *fw;
+        const struct nouveau_ctxprog *cp;
+        const struct nouveau_ctxvals *cv;
+        char name[32];
+        int ret, i;
+
+        if (pgraph->accel_blocked)
+                return -ENODEV;
+
+        if (!pgraph->ctxprog) {
+                sprintf(name, "nouveau/nv%02x.ctxprog", chipset);
+                ret = request_firmware(&fw, name, &dev->pdev->dev);
+                if (ret) {
+                        NV_ERROR(dev, "No ctxprog for NV%02x\n", chipset);
+                        return ret;
+                }
+
+                pgraph->ctxprog = kmalloc(fw->size, GFP_KERNEL);
+                if (!pgraph->ctxprog) {
+                        NV_ERROR(dev, "OOM copying ctxprog\n");
+                        release_firmware(fw);
+                        return -ENOMEM;
+                }
+                memcpy(pgraph->ctxprog, fw->data, fw->size);
+
+                cp = pgraph->ctxprog;
+                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);
+                        nouveau_grctx_fini(dev);
+                        return -EINVAL;
+                }
+                release_firmware(fw);
+        }
+
+        if (!pgraph->ctxvals) {
+                sprintf(name, "nouveau/nv%02x.ctxvals", chipset);
+                ret = request_firmware(&fw, name, &dev->pdev->dev);
+                if (ret) {
+                        NV_ERROR(dev, "No ctxvals for NV%02x\n", chipset);
+                        nouveau_grctx_fini(dev);
+                        return ret;
+                }
+
+                pgraph->ctxvals = kmalloc(fw->size, GFP_KERNEL);
+                if (!pgraph->ctxprog) {
+                        NV_ERROR(dev, "OOM copying ctxprog\n");
+                        release_firmware(fw);
+                        nouveau_grctx_fini(dev);
+                        return -ENOMEM;
+                }
+                memcpy(pgraph->ctxvals, fw->data, fw->size);
+
+                cv = (void *)pgraph->ctxvals;
+                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);
+                        nouveau_grctx_fini(dev);
+                        return -EINVAL;
+                }
+                release_firmware(fw);
+        }
+
+        cp = pgraph->ctxprog;
+
+        nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_INDEX, 0);
+        for (i = 0; i < le16_to_cpu(cp->length); i++)
+                nv_wr32(dev, NV40_PGRAPH_CTXCTL_UCODE_DATA,
+                        le32_to_cpu(cp->data[i]));
+
+        return 0;
+}
+
+void
+nouveau_grctx_fini(struct drm_device *dev)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
+
+        if (pgraph->ctxprog) {
+                kfree(pgraph->ctxprog);
+                pgraph->ctxprog = NULL;
+        }
+
+        if (pgraph->ctxvals) {
+                kfree(pgraph->ctxprog);
+                pgraph->ctxvals = NULL;
+        }
+}
+
+void
+nouveau_grctx_vals_load(struct drm_device *dev, struct nouveau_gpuobj *ctx)
+{
+        struct drm_nouveau_private *dev_priv = dev->dev_private;
+        struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
+        struct nouveau_ctxvals *cv = pgraph->ctxvals;
+        int i;
+
+        if (!cv)
+                return;
+
+        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));
+}