source: trunk/kernel/devices/dev_iob.c @ 565

Last change on this file since 565 was 565, checked in by alain, 3 years ago

Complete restructuration of kernel locks.

File size: 4.6 KB
Line 
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    // get implementation
38    uint32_t  impl = chdev->impl;
39
40    // set chdev name
41    strcpy( chdev->name , "iob" );
42
43    // call driver init function
44    hal_drivers_iob_init( chdev , impl );
45}
46
47//////////////////////////////////////////
48void dev_iob_iommu_enable( xptr_t dev_xp )
49{
50    // get IOB chdev descriptor cluster and local pointer
51    cxy_t     dev_cxy = GET_CXY( dev_xp );
52    chdev_t * dev_ptr = GET_PTR( dev_xp );
53
54    // get pointer on set_active function
55    iob_set_active_t * f = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.set_active ) );
56
57    // call relevant driver function
58    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
59    f( dev_xp , 1 );
60    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
61}
62
63///////////////////////////////////////////
64void dev_iob_iommu_disable( xptr_t dev_xp )
65{
66    // get IOB chdev descriptor cluster and local pointer
67    cxy_t     dev_cxy = GET_CXY( dev_xp );
68    chdev_t * dev_ptr = GET_PTR( dev_xp );
69
70    // get pointer on set_active function
71    iob_set_active_t * f = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.set_active ) );
72
73    // call driver function
74    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
75    f( dev_xp , 0 );
76    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
77}
78
79////////////////////////////////////////
80void dev_iob_set_ptpr( xptr_t    dev_xp,
81                       uint32_t  wdata )
82{
83    // get IOB chdev descriptor cluster and local pointer
84    cxy_t     dev_cxy = GET_CXY( dev_xp );
85    chdev_t * dev_ptr = GET_PTR( dev_xp );
86
87    // get pointer on set_ptpr function
88    iob_set_ptpr_t * f = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.set_ptpr ) );
89
90    // call driver function
91    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
92    f( dev_xp , wdata );
93    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
94
95}
96
97////////////////////////////////////////
98void dev_iob_inval_page( xptr_t  dev_xp,
99                         vpn_t   vpn )
100{
101    // get IOB chdev descriptor cluster and local pointer
102    cxy_t     dev_cxy = GET_CXY( dev_xp );
103    chdev_t * dev_ptr = GET_PTR( dev_xp );
104
105    // get pointer on inval_page function
106    iob_inval_page_t * f = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.inval_page ) );
107
108    // call driver function
109    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
110    f( dev_xp , vpn );
111    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
112}
113
114///////////////////////////////////////////
115void dev_iob_get_status( xptr_t     dev_xp,
116                         uint32_t * error,
117                         uint32_t * bvar,
118                         uint32_t * srcid )
119{
120    // get IOB chdev descriptor cluster and local pointer
121    cxy_t     dev_cxy = GET_CXY( dev_xp );
122    chdev_t * dev_ptr = GET_PTR( dev_xp );
123
124    // get pointer on the functions
125    iob_get_error_t * f_get_error = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.get_error ) );
126    iob_get_srcid_t * f_get_srcid = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.get_srcid ) );
127    iob_get_bvar_t  * f_get_bvar  = hal_remote_lpt( XPTR( dev_cxy , &dev_ptr->ext.iob.get_bvar  ) );
128
129    // call driver function
130    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
131    *error = f_get_error( dev_xp );
132    *srcid = f_get_srcid( dev_xp );
133    *bvar  = f_get_bvar( dev_xp );
134    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
135}
136
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