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
|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/usr/util/utiltce.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2013,2017 */
/* [+] 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 __TCEIF_H
#define __TCEIF_H
#include <stdint.h>
#include <builtins.h>
#include <errl/errlentry.H>
#include <devicefw/userif.H>
#define UTILTCE_TRACE_NAME "UTILTCE"
namespace TCE
{
/*******************************************/
/* General TCE Enable/Disable Functions */
/*******************************************/
/**
* @brief Responsible for allocating TCEs
*
* @param[in] i_startingAddress - Starting physical address that the allocated
* TCEs will map to.
* Needs to be Page-Aligned or will fail.
*
* @param[in] i_size - Size of the address space that TCEs map to.
* Size must be less than (512K * PAGESIZE) or will fail.
* Assert if not greater than zero.
*
* @param[out] o_startingToken - Key to the Starting Entry into the table.
* This is an offset into the array based on the
* TCE Index * PAGESIZE.
* FSP uses the token as a DMA Address.
* Each TCE entry maps to a pagesize of memory.
*
* Note: First time this is called will cause TCE Table to be created and
* the Processors to be setup to point at the TCE Table
*
* @return errlHndl_t - Return Error Handle if failed
*
*/
errlHndl_t utilAllocateTces(uint64_t i_startingAddress,
size_t i_size,
uint32_t& o_startingToken);
/**
* @brief Responsible for deallocating TCEs
*
* @param[in] i_startingToken Token indicating the starting entry of the
* TCE Table to remove
*
* @param[in] i_size - Size of memory space to remove associated TCE entries
* Size must be less than (512K * PAGESIZE) or will fail.
* Assert if not greater than zero.
*
* @return errlHndl_t - Return Error Handle if failed
*
*/
errlHndl_t utilDeallocateTces(uint32_t i_startingToken,
size_t i_size);
/**
* @brief Responsible for disabling TCEs on the system, including
* clearing the TCE Table and disabling Processor settings
*
* @return errlHndl_t - Return Error Handle if failed
*
*/
errlHndl_t utilDisableTces(void);
/******************************************************/
/* Specific TCE Setup/Close Functions for PAYLOAD */
/******************************************************/
/**
* @brief Responsible for Setting up TCEs for PAYLOAD, including HDAT
*
* @return errlHndl_t - Return Error Handle if failed
*
*/
errlHndl_t utilSetupPayloadTces(void);
/**
* @brief Responsible for closing the TCEs for PAYLOAD, including HDAT
*
* @return errlHndl_t - Return Error Handle if failed
*
*/
errlHndl_t utilClosePayloadTces(void);
/******************************************************/
/* Miscellaneous Functions */
/******************************************************/
/**
* @brief Indicates if TCEs should be used for DMA path on the system
*
* @return bool - TRUE if TCEs should be used; False, if not
*
*/
bool utilUseTcesForDmas(void);
/**
* @brief Enables the System to use TCEs without setting up a TCE Table.
* This prevents the FSP from using unsecure DMAs during the IPL until
* Hostboot sets up the TCE Table with proper TCEs.
*
* @return errlHndl_t - Return Error Handle if failed
*
*/
errlHndl_t utilEnableTcesWithoutTceTable(void);
};
#endif
|
