| 1 | /* |
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| 2 | * soclib_pic.c - soclib PIC driver implementation. |
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| 3 | * |
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| 4 | * Author Alain Greiner (2016) |
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| 5 | * |
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| 6 | * Copyright (c) UPMC Sorbonne Universites |
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| 7 | * |
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| 8 | * This file is part of ALMOS-MKH. |
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| 9 | * |
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| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 11 | * under the terms of the GNU General Public License as published by |
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| 12 | * the Free Software Foundation; version 2.0 of the License. |
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| 13 | * |
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| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 17 | * General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 22 | */ |
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| 23 | |
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| 24 | #include <hal_types.h> |
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| 25 | #include <chdev.h> |
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| 26 | #include <soclib_pic.h> |
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| 27 | #include <soclib_xcu.h> |
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| 28 | #include <errno.h> |
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| 29 | #include <string.h> |
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| 30 | #include <vfs.h> |
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| 31 | |
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| 32 | //////////////////////////////////////// |
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| 33 | void soclib_pic_init( chdev_t * chdev ) |
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| 34 | { |
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| 35 | // get PIC controller segment cluster and local pointer |
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| 36 | cxy_t seg_cxy = (cxy_t)GET_CXY( chdev->base ); |
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| 37 | uint32_t * seg_ptr = (uint32_t *)GET_PTR( chdev->base ); |
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| 38 | uint32_t i; |
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| 39 | |
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| 40 | // reset the MASK registers for all input IRQs |
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| 41 | for( i = 0 ; i < CONFIG_MAX_IRQS_PER_PIC ; i++ ) |
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| 42 | { |
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| 43 | hal_remote_sw( XPTR( seg_cxy , seg_ptr + i*IOPIC_SPAN + IOPIC_MASK ) , 0 ); |
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| 44 | } |
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| 45 | } |
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| 46 | |
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| 47 | //////////////////////////////////////////// |
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| 48 | void soclib_pic_bind_irq( xptr_t dev_xp, |
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| 49 | uint32_t irq_id, |
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| 50 | xptr_t xp_wti ) |
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| 51 | { |
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| 52 | // get PIC device descriptor cluster and local pointer |
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| 53 | cxy_t dev_cxy = GET_CXY( dev_xp ); |
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| 54 | chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp ); |
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| 55 | |
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| 56 | // get extended pointer on PIC segment base from PIC device descriptor |
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| 57 | xptr_t seg_xp = (xptr_t)hal_remote_lwd( XPTR( dev_cxy , &dev_ptr->base ) ); |
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| 58 | |
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| 59 | // get PIC controller segment cluster and local pointer |
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| 60 | cxy_t seg_cxy = (cxy_t)GET_CXY( seg_xp); |
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| 61 | uint32_t * seg_ptr = (uint32_t *)GET_PTR( seg_xp ); |
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| 62 | |
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| 63 | uint32_t lsb = (uint32_t)xp_wti; |
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| 64 | uint32_t msb = (uint32_t)(xp_wti>>32); |
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| 65 | |
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| 66 | // set the IOPIC_ADDRESS and IOPIC_EXTEND registers |
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| 67 | hal_remote_sw( XPTR( seg_cxy , seg_ptr+irq_id*IOPIC_SPAN+IOPIC_ADDRESS ) , lsb ); |
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| 68 | hal_remote_sw( XPTR( seg_cxy , seg_ptr+irq_id*IOPIC_SPAN+IOPIC_EXTEND ) , msb ); |
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| 69 | |
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| 70 | // set IOPIC_MASK register |
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| 71 | hal_remote_sw( XPTR( seg_cxy , seg_ptr+irq_id*IOPIC_SPAN+IOPIC_MASK ) , 1 ); |
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| 72 | } |
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| 73 | |
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| 74 | ////////////////////////////////////////////// |
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| 75 | void soclib_pic_unbind_irq( xptr_t dev_xp, |
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| 76 | uint32_t irq_id ) |
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| 77 | { |
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| 78 | // get PIC device descriptor cluster and local pointer |
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| 79 | cxy_t dev_cxy = GET_CXY( dev_xp ); |
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| 80 | chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp ); |
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| 81 | |
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| 82 | // get extended pointer on PIC segment base from PIC device descriptor |
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| 83 | xptr_t seg_xp = (xptr_t)hal_remote_lwd( XPTR( dev_cxy , &dev_ptr->base ) ); |
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| 84 | |
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| 85 | // get PIC controller segment cluster and local pointer |
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| 86 | cxy_t seg_cxy = (cxy_t)GET_CXY( seg_xp); |
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| 87 | uint32_t * seg_ptr = (uint32_t *)GET_PTR( seg_xp ); |
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| 88 | |
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| 89 | // set IOPIC_MASK register |
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| 90 | hal_remote_sw( XPTR( seg_cxy , seg_ptr+irq_id*IOPIC_SPAN+IOPIC_MASK ) , 0 ); |
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| 91 | } |
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| 92 | |
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| 93 | ////////////////////////////////////////////// |
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| 94 | void soclib_pic_get_status( xptr_t dev_xp, |
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| 95 | uint32_t irq_id, |
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| 96 | uint32_t * status) |
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| 97 | { |
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| 98 | // get PIC device descriptor cluster and local pointer |
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| 99 | cxy_t dev_cxy = GET_CXY( dev_xp ); |
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| 100 | chdev_t * dev_ptr = (chdev_t *)GET_PTR( dev_xp ); |
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| 101 | |
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| 102 | // get extended pointer on PIC segment base from PIC device descriptor |
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| 103 | xptr_t seg_xp = (xptr_t)hal_remote_lwd( XPTR( dev_cxy , &dev_ptr->base ) ); |
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| 104 | |
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| 105 | // get PIC controller segment cluster and local pointer |
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| 106 | cxy_t seg_cxy = (cxy_t)GET_CXY( seg_xp); |
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| 107 | uint32_t * seg_ptr = (uint32_t *)GET_PTR( seg_xp ); |
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| 108 | |
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| 109 | // return status |
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| 110 | *status = hal_remote_lw( XPTR( seg_cxy , seg_ptr+irq_id*IOPIC_SPAN+IOPIC_STATUS ) ); |
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| 111 | } |
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| 112 | |
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