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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_hwsq.h')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_hwsq.h115
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_hwsq.h b/drivers/gpu/drm/nouveau/nouveau_hwsq.h
new file mode 100644
index 000000000000..697687593a81
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_hwsq.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright 2010 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
+ */
+
+#ifndef __NOUVEAU_HWSQ_H__
+#define __NOUVEAU_HWSQ_H__
+
+struct hwsq_ucode {
+ u8 data[0x200];
+ union {
+ u8 *u08;
+ u16 *u16;
+ u32 *u32;
+ } ptr;
+ u16 len;
+
+ u32 reg;
+ u32 val;
+};
+
+static inline void
+hwsq_init(struct hwsq_ucode *hwsq)
+{
+ hwsq->ptr.u08 = hwsq->data;
+ hwsq->reg = 0xffffffff;
+ hwsq->val = 0xffffffff;
+}
+
+static inline void
+hwsq_fini(struct hwsq_ucode *hwsq)
+{
+ do {
+ *hwsq->ptr.u08++ = 0x7f;
+ hwsq->len = hwsq->ptr.u08 - hwsq->data;
+ } while (hwsq->len & 3);
+ hwsq->ptr.u08 = hwsq->data;
+}
+
+static inline void
+hwsq_usec(struct hwsq_ucode *hwsq, u8 usec)
+{
+ u32 shift = 0;
+ while (usec & ~3) {
+ usec >>= 2;
+ shift++;
+ }
+
+ *hwsq->ptr.u08++ = (shift << 2) | usec;
+}
+
+static inline void
+hwsq_setf(struct hwsq_ucode *hwsq, u8 flag, int val)
+{
+ flag += 0x80;
+ if (val >= 0)
+ flag += 0x20;
+ if (val >= 1)
+ flag += 0x20;
+ *hwsq->ptr.u08++ = flag;
+}
+
+static inline void
+hwsq_op5f(struct hwsq_ucode *hwsq, u8 v0, u8 v1)
+{
+ *hwsq->ptr.u08++ = 0x5f;
+ *hwsq->ptr.u08++ = v0;
+ *hwsq->ptr.u08++ = v1;
+}
+
+static inline void
+hwsq_wr32(struct hwsq_ucode *hwsq, u32 reg, u32 val)
+{
+ if (val != hwsq->val) {
+ if ((val & 0xffff0000) == (hwsq->val & 0xffff0000)) {
+ *hwsq->ptr.u08++ = 0x42;
+ *hwsq->ptr.u16++ = (val & 0x0000ffff);
+ } else {
+ *hwsq->ptr.u08++ = 0xe2;
+ *hwsq->ptr.u32++ = val;
+ }
+
+ hwsq->val = val;
+ }
+
+ if ((reg & 0xffff0000) == (hwsq->reg & 0xffff0000)) {
+ *hwsq->ptr.u08++ = 0x40;
+ *hwsq->ptr.u16++ = (reg & 0x0000ffff);
+ } else {
+ *hwsq->ptr.u08++ = 0xe0;
+ *hwsq->ptr.u32++ = reg;
+ }
+ hwsq->reg = reg;
+}
+
+#endif