source: trunk/hal/tsar_mips32/drivers/soclib_xcu.h @ 242

Last change on this file since 242 was 75, checked in by max@…, 7 years ago

Create the drivers/ sub-directory in each hal, and move soclib
into it. Note that soclib is not valid for x86_64, but more
changes will come.
File size: 8.3 KB
Line 
1/*
2 * soclib_xcu.h - soclib XCU driver API definition.
3 *
4 * Alain Greiner    (2016)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#ifndef _SOCLIB_XCU_H_
25#define _SOCLIB_XCU_H_
26
27#include <hal_types.h>
28#include <chdev.h>
29
30/******************************************************************************************
31 *    SOCLIB_XCU  Registers Mnemonics
32 *****************************************************************************************/
33
34#define XCU_WTI_REG            0
35#define XCU_PTI_PER            1
36#define XCU_PTI_VAL            2
37#define XCU_PTI_ACK            3
38#define XCU_MSK_PTI            4
39#define XCU_MSK_PTI_ENABLE     5
40#define XCU_MSK_PTI_DISABLE    6
41#define XCU_PTI_ACTIVE         6
42#define XCU_MSK_HWI            8
43#define XCU_MSK_HWI_ENABLE     9
44#define XCU_MSK_HWI_DISABLE    10
45#define XCU_HWI_ACTIVE         10
46#define XCU_MSK_WTI            12
47#define XCU_MSK_WTI_ENABLE     13
48#define XCU_MSK_WTI_DISABLE    14
49#define XCU_WTI_ACTIVE         14
50#define XCU_PRIO               15
51#define XCU_CONFIG             16
52
53/******************************************************************************************
54 * This function initialises the local XCU masks registers for a given
55 * core identified by its local index.
56 ******************************************************************************************
57 * @ icu       : pointer on the local ICU chdev descriptor.
58 * @ lid       : core local index.
59 *****************************************************************************************/
60void soclib_xcu_init( chdev_t * icu,
61                      lid_t     lid );
62
63/******************************************************************************************
64 * This function set bits in the local XCU mask register for a given IRQ type,
65 * and a given core. It must be called by a local thread.
66 * Only the bits with "1" value in mask argument are set, other bits are not modified.
67 * All input IRQs of requested types corresponding to "1" bits in mask are enabled.
68 ******************************************************************************************
69 * @ icu     : pointer on local XCU chdev descriptor
70 * @ mask    : mask value
71 * @ type    : HWI_TYPE / PTI_TYPE / WTI_TYPE
72 * @ lid     : local core index == output IRQ index
73 *****************************************************************************************/
74void  soclib_xcu_enable_irq( chdev_t  * icu,
75                             uint32_t   mask, 
76                             uint32_t   type, 
77                             lid_t      lid );
78
79/******************************************************************************************
80 * This function clear bits in the local XCU mask register for a given IRQ type,
81 * and a given core. It must be called by a local thread.
82 * Only the bits with "1" value in mask argument are cleared, other bits are not modified.
83 * All input IRQs of requested types corresponding to "1" bits in mask are disabled.
84 ******************************************************************************************
85 * @ icu     : pointer on local XCU chdev descriptor
86 * @ mask    : mask value
87 * @ type    : HWI_TYPE / PTI_TYPE / WTI_TYPE
88 * @ lid     : local core index == output IRQ index
89 *****************************************************************************************/
90void  soclib_xcu_disable_irq( chdev_t  * icu,
91                              uint32_t   mask, 
92                              uint32_t   type, 
93                              lid_t      lid );
94
95/******************************************************************************************
96 * This function returns the values contained in the HWI/WTI/PTI mask registers for
97 * a given core. It must be called by a local thread.
98 ******************************************************************************************
99 * @ icu      : pointer on local XCU chdev descriptor
100 * @ lid      : local core index == output IRQ index
101 * @ hwi_mask : [out] HWI mask for selected core
102 * @ wti_mask : [out] WTI mask for selected core
103 * @ pti_mask : [out] PTI mask for selected core
104 *****************************************************************************************/
105void soclib_xcu_get_masks( chdev_t   * icu,
106                           lid_t       lid,
107                           uint32_t  * hwi_mask,
108                           uint32_t  * wti_mask,
109                           uint32_t  * pti_mask );
110
111/******************************************************************************************
112 * This function set the period value for a local XCU timer.
113 ******************************************************************************************
114 * @ icu        : pointer on the local XCU chdev descriptor
115 * @ index      : timer index = PTI index
116 * @ period     : Value to be written
117 *****************************************************************************************/
118void  soclib_xcu_set_period( chdev_t  * icu,
119                             uint32_t   index,
120                             uint32_t   period );
121
122/******************************************************************************************
123 * This function acknowledge a PTI IRQ for a local XCU timer.
124 ******************************************************************************************
125 * @ icu        : pointer on the local XCU chdev descriptor
126 * @ index      : timer index = PTI index
127 * @ the returned value in not significant, but acknowledge requires a read.
128 *****************************************************************************************/
129uint32_t soclib_xcu_ack_timer( chdev_t  * icu,
130                               uint32_t   index );
131
132/******************************************************************************************
133 * This function returns the highest priority active interrupt of each type.
134 * If no active interrupt => status == 0 / else => status = index + 1
135 ******************************************************************************************
136 * @ icu        : pointer on the local XCU chdev descriptor
137 * @ lid        : core local index.
138 * @ hwi_status : buffer for returned HWI status
139 * @ wti_status : buffer for returned WTI status
140 * @ pti_status : buffer for returned PTI status
141 *****************************************************************************************/
142void  soclib_xcu_get_status( chdev_t  * icu,
143                             lid_t      lid,
144                             uint32_t * hwi_status,
145                             uint32_t * wti_status,
146                             uint32_t * pti_status );
147
148/******************************************************************************************
149 * This function send an IPI (Inter Processor Interrupt) to a remote XCU,
150 * by writing in a WTI mailbox.
151 ******************************************************************************************
152 * @ icu_xp  : extended pointer on target ICU device descriptor.
153 * @ lid     : target core local index == WTI mailbox index.
154 *****************************************************************************************/
155void  soclib_xcu_send_ipi( xptr_t     icu_xp,
156                           lid_t      lid );
157
158/******************************************************************************************
159 * This function returns the local pointer on a WTI mailbox identified by its index.
160 * This function does not access the SOCLIB_XCU hardware device.
161 ******************************************************************************************
162 * @ icu     : pointer on the local XCU chdev descriptor
163 * @ index   : WTI mailbox index.
164 *****************************************************************************************/
165uint32_t * soclib_xcu_wti_ptr( chdev_t  * icu,
166                               uint32_t   index );
167
168
169#endif  /* _SOCLIB_XCU_H_ */
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