source: trunk/kernel/devices/dev_pic.c @ 205

Last change on this file since 205 was 205, checked in by alain, 5 years ago

Change dev_pic_enable_irq() and dev_pic_disable_irq() prototypes
to handle remote IRQs.

File size: 5.0 KB
Line 
1/*
2 * dev_pic.c - PIC (External Interrupt Controler) generic device API implementation.
3 *
4 * Authors   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 PARTPICLAR 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 <hal_types.h>
25#include <hal_special.h>
26#include <chdev.h>
27#include <printk.h>
28#include <soclib_pic.h>
29#include <dev_pic.h>
30#include <cluster.h>
31
32/////////////////////////////////////////////////////////////////////////////////////////
33// Extern global variables
34/////////////////////////////////////////////////////////////////////////////////////////
35
36extern chdev_directory_t  chdev_dir;         // allocated in kernel_init.c
37
38///////////////////////////////////
39void dev_pic_init( chdev_t  * pic )
40{
41    // get implementation
42    uint32_t impl = pic->impl;
43
44    // set chdev name
45    strcpy( pic->name , "pic" );
46
47    // call the relevant driver init function,
48    // and register commands in PIC device extension
49    if( impl == IMPL_PIC_SCL )
50    {
51        // call the PIC SOCLIB driver
52        soclib_pic_init( pic );
53
54        // update the PIC chdev extension
55        pic->ext.pic.enable_timer = &soclib_pic_enable_timer;
56        pic->ext.pic.enable_irq   = &soclib_pic_enable_irq;
57        pic->ext.pic.disable_irq  = &soclib_pic_disable_irq;
58        pic->ext.pic.bind_irq     = &soclib_pic_bind_irq;
59        pic->ext.pic.send_ipi     = &soclib_pic_send_ipi;
60        pic->ext.pic.extend_init  = &soclib_pic_extend_init;
61    }
62    else if( impl == IMPL_PIC_I86 )
63    {
64        assert( false , __FUNCTION__ , "missing implementation for X86\n" );
65    }
66    else
67    {
68        assert( false , __FUNCTION__ , "undefined PIC device implementation" );
69    }
70} // end dev_pic_init()
71
72/////////////////////////////////////////////////
73void dev_pic_extend_init( uint32_t * lapic_base )
74{
75    // get pointer on PIC chdev
76    chdev_t * pic_ptr = (chdev_t *)GET_PTR( chdev_dir.pic );
77    cxy_t     pic_cxy = GET_CXY( chdev_dir.pic );
78
79    // get pointer on extend_init function
80    extend_init_t * f = hal_remote_lpt( XPTR( pic_cxy , &pic_ptr->ext.pic.extend_init ) ); 
81
82    // call relevant driver function
83    f( lapic_base );
84}
85
86/////////////////////////////////////
87void dev_pic_bind_irq( lid_t     lid,
88                       chdev_t * src_chdev )
89{
90    // get pointer on PIC chdev
91    chdev_t * pic_ptr = (chdev_t *)GET_PTR( chdev_dir.pic );
92    cxy_t     pic_cxy = GET_CXY( chdev_dir.pic );
93
94    // get pointer on bind_irq function
95    bind_irq_t * f = hal_remote_lpt( XPTR( pic_cxy , &pic_ptr->ext.pic.bind_irq ) );
96
97    // call relevant driver function
98    f( lid , src_chdev );
99}
100
101/////////////////////////////////////
102void dev_pic_enable_irq( lid_t   lid,
103                         xptr_t  src_chdev_xp )
104{
105    // get pointer on PIC chdev
106    chdev_t * pic_ptr = (chdev_t *)GET_PTR( chdev_dir.pic );
107    cxy_t     pic_cxy = GET_CXY( chdev_dir.pic );
108
109    // get pointer on enable_irq function
110    enable_irq_t * f = hal_remote_lpt( XPTR( pic_cxy , &pic_ptr->ext.pic.enable_irq ) );
111
112    // call relevant driver function
113    f( lid , src_chdev_xp );
114}
115
116//////////////////////////////////////
117void dev_pic_disable_irq( lid_t   lid,
118                          xptr_t  src_chdev_xp )
119{
120    // get pointer on PIC chdev
121    chdev_t * pic_ptr = (chdev_t *)GET_PTR( chdev_dir.pic );
122    cxy_t     pic_cxy = GET_CXY( chdev_dir.pic );
123
124    // get pointer on disable_irq function
125    disable_irq_t * f = hal_remote_lpt( XPTR( pic_cxy , &pic_ptr->ext.pic.disable_irq ) );
126
127    // call relevant driver function
128    f( lid , src_chdev_xp );
129}
130
131////////////////////////////////////////////
132void dev_pic_enable_timer( uint32_t period )
133{
134    // get pointer on PIC chdev
135    chdev_t * pic_ptr = (chdev_t *)GET_PTR( chdev_dir.pic );
136    cxy_t     pic_cxy = GET_CXY( chdev_dir.pic );
137
138    // get pointer on enable_timer function
139    enable_timer_t * f = hal_remote_lpt( XPTR( pic_cxy , &pic_ptr->ext.pic.enable_timer ) );
140
141    // call relevant driver function
142    f( period );
143}
144
145//////////////////////////////////
146void dev_pic_send_ipi( cxy_t  cxy,
147                       lid_t  lid )
148{
149    // get pointer on PIC chdev
150    chdev_t * pic_ptr = (chdev_t *)GET_PTR( chdev_dir.pic );
151    cxy_t     pic_cxy = GET_CXY( chdev_dir.pic );
152
153    // get pointer on send_ipi function
154    send_ipi_t * f = hal_remote_lpt( XPTR( pic_cxy , &pic_ptr->ext.pic.send_ipi ) );
155
156    // call relevant driver function
157    f( cxy , lid );
158}
159
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