source: trunk/kernel/devices/dev_iob.c

Last change on this file was 647, checked in by alain, 3 years ago

...miscelaneous...

File size: 4.5 KB
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1/*
2 * dev_iob.c - IOB (bridge to external I/O) generic device API implementation.
3 *
4 * Authors   Alain Greiner  (2016,2017,2018)
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 PARTIOBLAR 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#include <kernel_config.h>
25#include <hal_kernel_types.h>
26#include <hal_special.h>
27#include <remote_busylock.h>
28#include <chdev.h>
29#include <printk.h>
30#include <string.h>
31#include <hal_drivers.h>
32#include <dev_iob.h>
33
34////////////////////////////////////
35void dev_iob_init( chdev_t * chdev )
36{
37    // set chdev name
38    strcpy( chdev->name , "iob" );
39
40    // call driver init function
41    hal_drivers_iob_init( chdev );
42}
43
44//////////////////////////////////////////
45void dev_iob_iommu_enable( xptr_t dev_xp )
46{
47    // get IOB chdev descriptor cluster and local pointer
48    cxy_t     dev_cxy = GET_CXY( dev_xp );
49    chdev_t * dev_ptr = GET_PTR( dev_xp );
50
51    // get pointer on set_active function
52    iob_set_active_t * f = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.set_active ) );
53
54    // call relevant driver function
55    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
56    f( dev_xp , 1 );
57    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
58}
59
60///////////////////////////////////////////
61void dev_iob_iommu_disable( xptr_t dev_xp )
62{
63    // get IOB chdev descriptor cluster and local pointer
64    cxy_t     dev_cxy = GET_CXY( dev_xp );
65    chdev_t * dev_ptr = GET_PTR( dev_xp );
66
67    // get pointer on set_active function
68    iob_set_active_t * f = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.set_active ) );
69
70    // call driver function
71    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
72    f( dev_xp , 0 );
73    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
74}
75
76////////////////////////////////////////
77void dev_iob_set_ptpr( xptr_t    dev_xp,
78                       uint32_t  wdata )
79{
80    // get IOB chdev descriptor cluster and local pointer
81    cxy_t     dev_cxy = GET_CXY( dev_xp );
82    chdev_t * dev_ptr = GET_PTR( dev_xp );
83
84    // get pointer on set_ptpr function
85    iob_set_ptpr_t * f = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.set_ptpr ) );
86
87    // call driver function
88    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
89    f( dev_xp , wdata );
90    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
91
92}
93
94////////////////////////////////////////
95void dev_iob_inval_page( xptr_t  dev_xp,
96                         vpn_t   vpn )
97{
98    // get IOB chdev descriptor cluster and local pointer
99    cxy_t     dev_cxy = GET_CXY( dev_xp );
100    chdev_t * dev_ptr = GET_PTR( dev_xp );
101
102    // get pointer on inval_page function
103    iob_inval_page_t * f = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.inval_page ) );
104
105    // call driver function
106    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
107    f( dev_xp , vpn );
108    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
109}
110
111///////////////////////////////////////////
112void dev_iob_get_status( xptr_t     dev_xp,
113                         uint32_t * error,
114                         uint32_t * bvar,
115                         uint32_t * srcid )
116{
117    // get IOB chdev descriptor cluster and local pointer
118    cxy_t     dev_cxy = GET_CXY( dev_xp );
119    chdev_t * dev_ptr = GET_PTR( dev_xp );
120
121    // get pointer on the functions
122    iob_get_error_t * f_get_error = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.get_error ) );
123    iob_get_srcid_t * f_get_srcid = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.get_srcid ) );
124    iob_get_bvar_t  * f_get_bvar  = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.get_bvar  ) );
125
126    // call driver function
127    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
128    *error = f_get_error( dev_xp );
129    *srcid = f_get_srcid( dev_xp );
130    *bvar  = f_get_bvar( dev_xp );
131    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
132}
133
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