gpu: nvgpu: Add dGPU clocks support

JIRA DNVGPU-45

Change-Id: I237ce81e31b036c05c82d46eea8694ffe1c2e3df
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Signed-off-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1205849
(cherry picked from commit 9a4006f76b75a8ad525e7aa5ad1f609aaae49126)
Reviewed-on: http://git-master/r/1227256
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 357 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/boardobj/boardobjgrpmask.c b/drivers/gpu/nvgpu/boardobj/boardobjgrpmask.c
new file mode 100644
index 00000000..47914038
--- /dev/null
+++ b/drivers/gpu/nvgpu/boardobj/boardobjgrpmask.c
@@ -0,0 +1,357 @@
+/*
+ * 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.
+ */
+#include "gk20a/gk20a.h"
+#include "boardobjgrp.h"
+#include "ctrl/ctrlboardobj.h"
+
+/*
+* Assures that unused bits (size .. (maskDataCount * 32 - 1)) are always zero.
+*/
+#define BOARDOBJGRPMASK_NORMALIZE(_pmask)                                      \
+        ((_pmask)->data[(_pmask)->maskdatacount-1] &= (_pmask)->lastmaskfilter)
+
+u32 boardobjgrpmask_init(struct boardobjgrpmask *mask, u8 bitsize,
+                struct ctrl_boardobjgrp_mask *extmask)
+{
+        if (mask == NULL)
+                return -EINVAL;
+        if ((bitsize != CTRL_BOARDOBJGRP_E32_MAX_OBJECTS) &&
+                (bitsize != CTRL_BOARDOBJGRP_E255_MAX_OBJECTS))
+                return -EINVAL;
+
+        mask->bitcount = bitsize;
+        mask->maskdatacount = CTRL_BOARDOBJGRP_MASK_DATA_SIZE(bitsize);
+        mask->lastmaskfilter = bitsize %
+                CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_BIT_SIZE;
+
+        mask->lastmaskfilter = (mask->lastmaskfilter == 0) ?
+                0xFFFFFFFF : (u32)(BIT(mask->lastmaskfilter) - 1);
+
+        return (extmask == NULL) ?
+                boardobjgrpmask_clr(mask) :
+                boardobjgrpmask_import(mask, bitsize, extmask);
+}
+
+u32 boardobjgrpmask_import(struct boardobjgrpmask *mask, u8 bitsize,
+                struct ctrl_boardobjgrp_mask *extmask)
+{
+        u8 index;
+
+        if (mask == NULL)
+                return -EINVAL;
+        if (extmask == NULL)
+                return -EINVAL;
+        if (mask->bitcount != bitsize)
+                return -EINVAL;
+
+        for (index = 0; index < mask->maskdatacount; index++)
+                mask->data[index] = extmask->data[index];
+
+        BOARDOBJGRPMASK_NORMALIZE(mask);
+
+        return 0;
+}
+
+u32 boardobjgrpmask_export(struct boardobjgrpmask *mask, u8 bitsize,
+                struct ctrl_boardobjgrp_mask *extmask)
+{
+        u8 index;
+
+        if (mask == NULL)
+                return -EINVAL;
+        if (extmask == NULL)
+                return -EINVAL;
+        if (mask->bitcount != bitsize)
+                return -EINVAL;
+
+        for (index = 0; index < mask->maskdatacount; index++)
+                extmask->data[index] = mask->data[index];
+
+        return 0;
+}
+
+u32 boardobjgrpmask_clr(struct boardobjgrpmask *mask)
+{
+        u8 index;
+
+        if (mask == NULL)
+                return -EINVAL;
+        for (index = 0; index < mask->maskdatacount; index++)
+                mask->data[index] = 0;
+
+        return 0;
+}
+
+u32 boardobjgrpmask_set(struct boardobjgrpmask *mask)
+{
+        u8 index;
+
+        if (mask == NULL)
+                return -EINVAL;
+        for (index = 0; index < mask->maskdatacount; index++)
+                mask->data[index] = 0xFFFFFFFF;
+        BOARDOBJGRPMASK_NORMALIZE(mask);
+        return 0;
+}
+
+u32 boardobjgrpmask_inv(struct boardobjgrpmask *mask)
+{
+        u8 index;
+
+        if (mask == NULL)
+                return -EINVAL;
+        for (index = 0; index < mask->maskdatacount; index++)
+                mask->data[index] = ~mask->data[index];
+        BOARDOBJGRPMASK_NORMALIZE(mask);
+        return 0;
+}
+
+bool boardobjgrpmask_iszero(struct boardobjgrpmask *mask)
+{
+        u8 index;
+
+        if (mask == NULL)
+                return true;
+        for (index = 0; index < mask->maskdatacount; index++) {
+                if (mask->data[index] != 0)
+                        return false;
+        }
+        return true;
+}
+
+u8 boardobjgrpmask_bitsetcount(struct boardobjgrpmask *mask)
+{
+        u8 index;
+        u8 result = 0;
+
+        if (mask == NULL)
+                return result;
+
+        for (index = 0; index < mask->maskdatacount; index++) {
+                u32 m = mask->data[index];
+
+                NUMSETBITS_32(m);
+                result += (u8)m;
+        }
+
+        return result;
+}
+
+u8 boardobjgrpmask_bitidxlowest(struct boardobjgrpmask *mask)
+{
+        u8 index;
+        u8 result = CTRL_BOARDOBJ_IDX_INVALID;
+
+        if (mask == NULL)
+                return result;
+
+        for (index = 0; index < mask->maskdatacount; index++) {
+                u32 m = mask->data[index];
+
+                if (m != 0) {
+                        LOWESTBITIDX_32(m);
+                        result = (u8)m + index *
+                        CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_BIT_SIZE;
+                        break;
+                }
+        }
+
+        return result;
+}
+
+u8 boardobjgrpmask_bitidxhighest(struct boardobjgrpmask *mask)
+{
+        u8 index;
+        u8 result = CTRL_BOARDOBJ_IDX_INVALID;
+
+        if (mask == NULL)
+                return result;
+
+        for (index = 0; index < mask->maskdatacount; index++) {
+                u32 m = mask->data[index];
+
+                if (m != 0) {
+                        HIGHESTBITIDX_32(m);
+                        result = (u8)m + index *
+                        CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_BIT_SIZE;
+                        break;
+                }
+        }
+
+        return result;
+}
+
+u32 boardobjgrpmask_bitclr(struct boardobjgrpmask *mask, u8 bitidx)
+{
+        u8 index;
+        u8 offset;
+
+        if (mask == NULL)
+                return -EINVAL;
+        if (bitidx >= mask->bitcount)
+                return -EINVAL;
+
+        index = CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_INDEX(bitidx);
+        offset = CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_OFFSET(bitidx);
+
+        mask->data[index] &= ~BIT(offset);
+
+        return 0;
+}
+
+u32 boardobjgrpmask_bitset(struct boardobjgrpmask *mask, u8 bitidx)
+{
+        u8 index;
+        u8 offset;
+
+        if (mask == NULL)
+                return -EINVAL;
+        if (bitidx >= mask->bitcount)
+                return -EINVAL;
+
+        index = CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_INDEX(bitidx);
+        offset = CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_OFFSET(bitidx);
+
+        mask->data[index] |= BIT(offset);
+
+        return 0;
+}
+
+u32 boardobjgrpmask_bitinv(struct boardobjgrpmask *mask, u8 bitidx)
+{
+        u8 index;
+        u8 offset;
+
+        if (mask == NULL)
+                return -EINVAL;
+        if (bitidx >= mask->bitcount)
+                return -EINVAL;
+
+        index = CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_INDEX(bitidx);
+        offset = CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_OFFSET(bitidx);
+
+        mask->data[index] ^= ~BIT(offset);
+
+        return 0;
+}
+
+bool boardobjgrpmask_bitget(struct boardobjgrpmask *mask, u8 bitidx)
+{
+        u8 index;
+        u8 offset;
+
+        if (mask == NULL)
+                return false;
+        if (bitidx >= mask->bitcount)
+                return false;
+
+        index = CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_INDEX(bitidx);
+        offset = CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_OFFSET(bitidx);
+
+        return (mask->data[index] & BIT(offset)) != 0;
+}
+
+u32 boardobjgrpmask_and(struct boardobjgrpmask *dst,
+                        struct boardobjgrpmask *op1,
+                        struct boardobjgrpmask *op2)
+{
+        u8 index;
+
+        if (!boardobjgrpmask_sizeeq(dst, op1))
+                return -EINVAL;
+        if (!boardobjgrpmask_sizeeq(dst, op2))
+                return -EINVAL;
+
+        for (index = 0; index < dst->maskdatacount; index++)
+                dst->data[index] = op1->data[index] & op2->data[index];
+
+        return 0;
+}
+
+u32 boardobjgrpmask_or(struct boardobjgrpmask *dst,
+                       struct boardobjgrpmask *op1,
+                       struct boardobjgrpmask *op2)
+{
+        u8 index;
+
+        if (!boardobjgrpmask_sizeeq(dst, op1))
+                return -EINVAL;
+        if (!boardobjgrpmask_sizeeq(dst, op2))
+                return -EINVAL;
+
+        for (index = 0; index < dst->maskdatacount; index++)
+                dst->data[index] = op1->data[index] | op2->data[index];
+
+        return 0;
+}
+
+u32 boardobjgrpmask_xor(struct boardobjgrpmask *dst,
+                        struct boardobjgrpmask *op1,
+                        struct boardobjgrpmask *op2)
+{
+        u8 index;
+
+        if (!boardobjgrpmask_sizeeq(dst, op1))
+                return -EINVAL;
+        if (!boardobjgrpmask_sizeeq(dst, op2))
+                return -EINVAL;
+
+        for (index = 0; index < dst->maskdatacount; index++)
+                dst->data[index] = op1->data[index] ^ op2->data[index];
+
+        return 0;
+}
+
+u32 boardobjgrpmask_copy(struct boardobjgrpmask *dst,
+                struct boardobjgrpmask *src)
+{
+        u8 index;
+
+        if (!boardobjgrpmask_sizeeq(dst, src))
+                return -EINVAL;
+
+        for (index = 0; index < dst->maskdatacount; index++)
+                dst->data[index] = src->data[index];
+
+        return 0;
+}
+
+bool boardobjgrpmask_sizeeq(struct boardobjgrpmask *op1,
+                struct boardobjgrpmask *op2)
+{
+        if (op1 == NULL)
+                return false;
+        if (op2 == NULL)
+                return false;
+
+        return op1->bitcount == op2->bitcount;
+}
+
+bool boardobjgrpmask_issubset(struct boardobjgrpmask *op1,
+                struct boardobjgrpmask *op2)
+{
+        u8 index;
+
+        if (!boardobjgrpmask_sizeeq(op2, op1))
+                return false;
+
+        for (index = 0; index < op1->maskdatacount; index++) {
+                u32 op_1 = op1->data[index];
+                u32 op_2 = op2->data[index];
+
+                if ((op_1 & op_2) != op_1)
+                        return false;
+        }
+
+        return true;
+}