1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/sbeio/sbe_memRegionMgr.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2017 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __SBE_MEMREGIONMGR_H
#define __SBE_MEMREGIONMGR_H
#include <stdint.h>
#include <errl/errlentry.H>
#include <vector>
#include <sbeio/sbeioif.H>
namespace SBEIO
{
/*
* @brief Define Specifying The Maximum Number Of Unsecure Memory Regions That
* the SBE Supports
*/
#define SBEIO_MAX_UNSECURE_MEMORY_REGIONS 8
/*
* @brief Struct containing specifics of a Unsecure Memory Region
*/
struct regionData
{
uint64_t start_addr; // Start address of region
uint32_t size; // Size of region in bytes
// Control Flags for PSU command -
// - see SbePsu::psuSetUnsecureMemoryRegionControlFlags
uint8_t flags;
// Target associated with the SBE
// - If tgt == nullptr it will eventually be updated to the Master Proc
TARGETING::Target* tgt;
regionData() : start_addr(0), size(0), flags(0), tgt(nullptr) {}
};
/** @class MemRegionMgr
* @brief Responsible for managing the SBE Unsecure Memory Regions
*
*/
class MemRegionMgr
{
private:
/** Cache of Unsecure Memory Regions that are currently open */
std::list< regionData > iv_memRegions;
/* For Debug purposes: Pring Out Vector of iv_memRegions */
void printIvMemRegions() const;
/**
* @brief Local Function To Open/Close Unsecure Memory Regions
*
* @param[in] i_region Structure containing information about the region
*
* @return errlHndl_t Error log handle on failure.
*
*/
errlHndl_t doUnsecureMemRegionOp(regionData & i_region);
/**
* @brief Checks That The Maximum Number of Unsecure Memory Regions That The
* SBE Supports Is Not Exceeded If A New Region Is Opened
*
* @param[in] i_count Current count of opened unsecure memory regions
*
* @return errlHndl_t Error log handle if current size of iv_memRegions is
* equal to or exceeds the maximum number of regions that
* the SBE Supports; otherwise, returns nullptr
*/
errlHndl_t checkNumberOfMemRegions(uint8_t i_count) const;
public:
/**
* @brief Constructor. Initializes instance variables.
*/
MemRegionMgr();
/**
* Destructor.
*/
~MemRegionMgr();
/**
* Delete Copy Constructor
*/
MemRegionMgr(const MemRegionMgr&) = delete;
/**
* Delete Copy Assignment
*/
MemRegionMgr& operator= (const MemRegionMgr&) = delete;
/**
* Delete Move Constructor
*/
MemRegionMgr (MemRegionMgr&&) = delete;
/**
* Delete Move Assignment
*/
MemRegionMgr& operator = (MemRegionMgr&&) = delete;
/**
* @brief Open Unsecure Memory Region via the SBE
*
* @note: See openUnsecureMemRegion() function in sbeioif.H for details
*
*/
errlHndl_t openUnsecureMemRegion(
const uint64_t i_start_addr,
const uint32_t i_size,
const bool i_isWritable,
TARGETING::Target* i_target);
/**
* @brief Close Unsecure Memory Region
*
* @note: See closeUnsecureMemRegion() function in sbeioif.H for details
*
*/
errlHndl_t closeUnsecureMemRegion(
const uint64_t i_start_addr,
TARGETING::Target* i_target);
/**
* @brief Close All Unsecure Memory Regions
*
* @note: See closeAllUnsecureMemRegions() function in sbeioif.H for details
*
*/
errlHndl_t closeAllUnsecureMemRegions();
}; // class MemRegionMgr
}; // end namespace SBEIO
#endif
|
