source: trunk/kernel/devices/dev_iob.c @ 566

Last change on this file since 566 was 565, checked in by alain, 6 years ago

Complete restructuration of kernel locks.

File size: 4.6 KB
RevLine 
[1]1/*
[3]2 * dev_iob.c - IOB (bridge to external I/O) generic device API implementation.
[1]3 *
[565]4 * Authors   Alain Greiner  (2016,2017,2018)
[1]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
[3]16 * MERCHANTABILITY or FITNESS FOR A PARTIOBLAR PURPOSE.  See the GNU
[1]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
[14]24#include <kernel_config.h>
[457]25#include <hal_kernel_types.h>
[1]26#include <hal_special.h>
[565]27#include <remote_busylock.h>
[3]28#include <chdev.h>
[1]29#include <printk.h>
[422]30#include <string.h>
[346]31#include <hal_drivers.h>
[3]32#include <dev_iob.h>
[1]33
[3]34////////////////////////////////////
35void dev_iob_init( chdev_t * chdev )
[1]36{
[346]37    // get implementation
[3]38    uint32_t  impl = chdev->impl;
[1]39
[23]40    // set chdev name
41    strcpy( chdev->name , "iob" );
42
[1]43    // call driver init function
[346]44    hal_drivers_iob_init( chdev , impl );
[1]45}
46
47//////////////////////////////////////////
[3]48void dev_iob_iommu_enable( xptr_t dev_xp )
[1]49{
[3]50    // get IOB chdev descriptor cluster and local pointer
51    cxy_t     dev_cxy = GET_CXY( dev_xp );
[565]52    chdev_t * dev_ptr = GET_PTR( dev_xp );
[1]53
[346]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 ) );
[1]56
[346]57    // call relevant driver function
[565]58    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[346]59    f( dev_xp , 1 );
[565]60    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[1]61}
62
63///////////////////////////////////////////
[3]64void dev_iob_iommu_disable( xptr_t dev_xp )
[1]65{
[3]66    // get IOB chdev descriptor cluster and local pointer
67    cxy_t     dev_cxy = GET_CXY( dev_xp );
[565]68    chdev_t * dev_ptr = GET_PTR( dev_xp );
[1]69
[346]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 ) );
[1]72
73    // call driver function
[565]74    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[346]75    f( dev_xp , 0 );
[565]76    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[1]77}
78
79////////////////////////////////////////
[3]80void dev_iob_set_ptpr( xptr_t    dev_xp,
[1]81                       uint32_t  wdata )
82{
[3]83    // get IOB chdev descriptor cluster and local pointer
84    cxy_t     dev_cxy = GET_CXY( dev_xp );
[565]85    chdev_t * dev_ptr = GET_PTR( dev_xp );
[1]86
[346]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 ) );
[1]89
90    // call driver function
[565]91    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[346]92    f( dev_xp , wdata );
[565]93    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[346]94
[1]95}
[346]96
[1]97////////////////////////////////////////
[3]98void dev_iob_inval_page( xptr_t  dev_xp,
[1]99                         vpn_t   vpn )
100{
[3]101    // get IOB chdev descriptor cluster and local pointer
102    cxy_t     dev_cxy = GET_CXY( dev_xp );
[565]103    chdev_t * dev_ptr = GET_PTR( dev_xp );
[1]104
[346]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 ) );
[1]107
108    // call driver function
[565]109    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[346]110    f( dev_xp , vpn );
[565]111    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[1]112}
113
114///////////////////////////////////////////
[3]115void dev_iob_get_status( xptr_t     dev_xp,
[1]116                         uint32_t * error,
117                         uint32_t * bvar,
118                         uint32_t * srcid )
119{
[3]120    // get IOB chdev descriptor cluster and local pointer
121    cxy_t     dev_cxy = GET_CXY( dev_xp );
[565]122    chdev_t * dev_ptr = GET_PTR( dev_xp );
[1]123
[346]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  ) );
[1]128
129    // call driver function
[565]130    remote_busylock_acquire( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[346]131    *error = f_get_error( dev_xp );
132    *srcid = f_get_srcid( dev_xp );
133    *bvar  = f_get_bvar( dev_xp );
[565]134    remote_busylock_release( XPTR( dev_cxy , &dev_ptr->wait_lock ) );
[1]135}
136
Note: See TracBrowser for help on using the repository browser.