From d215bc1107a8a032d18e515e55d5e29c7192f15e Mon Sep 17 00:00:00 2001
From: Konsta Holtta <kholtta@nvidia.com>
Date: Fri, 20 May 2016 09:12:23 +0300
Subject: gpu: nvgpu: detect vidmem configuration from HW

Read video memory size from hardware during initialization for devices
that support it.

JIRA DNVGPU-14

Change-Id: If190f2d89f7148520ee274ca674f972987c8056d
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/1157215
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
---
 drivers/gpu/nvgpu/gm206/hw_fbpa_gm206.h | 61 +++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 drivers/gpu/nvgpu/gm206/hw_fbpa_gm206.h

(limited to 'drivers/gpu/nvgpu/gm206/hw_fbpa_gm206.h')

diff --git a/drivers/gpu/nvgpu/gm206/hw_fbpa_gm206.h b/drivers/gpu/nvgpu/gm206/hw_fbpa_gm206.h
new file mode 100644
index 00000000..3a1d1981
--- /dev/null
+++ b/drivers/gpu/nvgpu/gm206/hw_fbpa_gm206.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/*
+ * Function naming determines intended use:
+ *
+ *     <x>_r(void) : Returns the offset for register <x>.
+ *
+ *     <x>_o(void) : Returns the offset for element <x>.
+ *
+ *     <x>_w(void) : Returns the word offset for word (4 byte) element <x>.
+ *
+ *     <x>_<y>_s(void) : Returns size of field <y> of register <x> in bits.
+ *
+ *     <x>_<y>_f(u32 v) : Returns a value based on 'v' which has been shifted
+ *         and masked to place it at field <y> of register <x>.  This value
+ *         can be |'d with others to produce a full register value for
+ *         register <x>.
+ *
+ *     <x>_<y>_m(void) : Returns a mask for field <y> of register <x>.  This
+ *         value can be ~'d and then &'d to clear the value of field <y> for
+ *         register <x>.
+ *
+ *     <x>_<y>_<z>_f(void) : Returns the constant value <z> after being shifted
+ *         to place it at field <y> of register <x>.  This value can be |'d
+ *         with others to produce a full register value for <x>.
+ *
+ *     <x>_<y>_v(u32 r) : Returns the value of field <y> from a full register
+ *         <x> value 'r' after being shifted to place its LSB at bit 0.
+ *         This value is suitable for direct comparison with other unshifted
+ *         values appropriate for use in field <y> of register <x>.
+ *
+ *     <x>_<y>_<z>_v(void) : Returns the constant value for <z> defined for
+ *         field <y> of register <x>.  This value is suitable for direct
+ *         comparison with unshifted values appropriate for use in field <y>
+ *         of register <x>.
+ */
+#ifndef _hw_fbpa_gp106_h_
+#define _hw_fbpa_gp106_h_
+
+static inline u32 fbpa_cstatus_r(void)
+{
+	return 0x0010f20c;
+}
+static inline u32 fbpa_cstatus_ramamount_v(u32 r)
+{
+	return (r >> 0) & 0x1ffff;
+}
+#endif
-- 
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