Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: arcofi.c,v 1.14.2.3 2004/01/13 14:31:24 keil Exp $ |
| 2 | * |
| 3 | * Ansteuerung ARCOFI 2165 |
| 4 | * |
| 5 | * Author Karsten Keil |
| 6 | * Copyright by Karsten Keil <keil@isdn4linux.de> |
| 7 | * |
| 8 | * This software may be used and distributed according to the terms |
| 9 | * of the GNU General Public License, incorporated herein by reference. |
| 10 | * |
| 11 | */ |
| 12 | |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame^] | 13 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include "hisax.h" |
| 15 | #include "isdnl1.h" |
| 16 | #include "isac.h" |
| 17 | #include "arcofi.h" |
| 18 | |
| 19 | #define ARCOFI_TIMER_VALUE 20 |
| 20 | |
| 21 | static void |
| 22 | add_arcofi_timer(struct IsdnCardState *cs) { |
| 23 | if (test_and_set_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) { |
| 24 | del_timer(&cs->dc.isac.arcofitimer); |
| 25 | } |
| 26 | init_timer(&cs->dc.isac.arcofitimer); |
| 27 | cs->dc.isac.arcofitimer.expires = jiffies + ((ARCOFI_TIMER_VALUE * HZ)/1000); |
| 28 | add_timer(&cs->dc.isac.arcofitimer); |
| 29 | } |
| 30 | |
| 31 | static void |
| 32 | send_arcofi(struct IsdnCardState *cs) { |
| 33 | u_char val; |
| 34 | |
| 35 | add_arcofi_timer(cs); |
| 36 | cs->dc.isac.mon_txp = 0; |
| 37 | cs->dc.isac.mon_txc = cs->dc.isac.arcofi_list->len; |
| 38 | memcpy(cs->dc.isac.mon_tx, cs->dc.isac.arcofi_list->msg, cs->dc.isac.mon_txc); |
| 39 | switch(cs->dc.isac.arcofi_bc) { |
| 40 | case 0: break; |
| 41 | case 1: cs->dc.isac.mon_tx[1] |= 0x40; |
| 42 | break; |
| 43 | default: break; |
| 44 | } |
| 45 | cs->dc.isac.mocr &= 0x0f; |
| 46 | cs->dc.isac.mocr |= 0xa0; |
| 47 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 48 | val = cs->readisac(cs, ISAC_MOSR); |
| 49 | cs->writeisac(cs, ISAC_MOX1, cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]); |
| 50 | cs->dc.isac.mocr |= 0x10; |
| 51 | cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr); |
| 52 | } |
| 53 | |
| 54 | int |
| 55 | arcofi_fsm(struct IsdnCardState *cs, int event, void *data) { |
| 56 | if (cs->debug & L1_DEB_MONITOR) { |
| 57 | debugl1(cs, "arcofi state %d event %d", cs->dc.isac.arcofi_state, event); |
| 58 | } |
| 59 | if (event == ARCOFI_TIMEOUT) { |
| 60 | cs->dc.isac.arcofi_state = ARCOFI_NOP; |
| 61 | test_and_set_bit(FLG_ARCOFI_ERROR, &cs->HW_Flags); |
| 62 | wake_up(&cs->dc.isac.arcofi_wait); |
| 63 | return(1); |
| 64 | } |
| 65 | switch (cs->dc.isac.arcofi_state) { |
| 66 | case ARCOFI_NOP: |
| 67 | if (event == ARCOFI_START) { |
| 68 | cs->dc.isac.arcofi_list = data; |
| 69 | cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT; |
| 70 | send_arcofi(cs); |
| 71 | } |
| 72 | break; |
| 73 | case ARCOFI_TRANSMIT: |
| 74 | if (event == ARCOFI_TX_END) { |
| 75 | if (cs->dc.isac.arcofi_list->receive) { |
| 76 | add_arcofi_timer(cs); |
| 77 | cs->dc.isac.arcofi_state = ARCOFI_RECEIVE; |
| 78 | } else { |
| 79 | if (cs->dc.isac.arcofi_list->next) { |
| 80 | cs->dc.isac.arcofi_list = |
| 81 | cs->dc.isac.arcofi_list->next; |
| 82 | send_arcofi(cs); |
| 83 | } else { |
| 84 | if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) { |
| 85 | del_timer(&cs->dc.isac.arcofitimer); |
| 86 | } |
| 87 | cs->dc.isac.arcofi_state = ARCOFI_NOP; |
| 88 | wake_up(&cs->dc.isac.arcofi_wait); |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | break; |
| 93 | case ARCOFI_RECEIVE: |
| 94 | if (event == ARCOFI_RX_END) { |
| 95 | if (cs->dc.isac.arcofi_list->next) { |
| 96 | cs->dc.isac.arcofi_list = |
| 97 | cs->dc.isac.arcofi_list->next; |
| 98 | cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT; |
| 99 | send_arcofi(cs); |
| 100 | } else { |
| 101 | if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) { |
| 102 | del_timer(&cs->dc.isac.arcofitimer); |
| 103 | } |
| 104 | cs->dc.isac.arcofi_state = ARCOFI_NOP; |
| 105 | wake_up(&cs->dc.isac.arcofi_wait); |
| 106 | } |
| 107 | } |
| 108 | break; |
| 109 | default: |
| 110 | debugl1(cs, "Arcofi unknown state %x", cs->dc.isac.arcofi_state); |
| 111 | return(2); |
| 112 | } |
| 113 | return(0); |
| 114 | } |
| 115 | |
| 116 | static void |
| 117 | arcofi_timer(struct IsdnCardState *cs) { |
| 118 | arcofi_fsm(cs, ARCOFI_TIMEOUT, NULL); |
| 119 | } |
| 120 | |
| 121 | void |
| 122 | clear_arcofi(struct IsdnCardState *cs) { |
| 123 | if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) { |
| 124 | del_timer(&cs->dc.isac.arcofitimer); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | void |
| 129 | init_arcofi(struct IsdnCardState *cs) { |
| 130 | cs->dc.isac.arcofitimer.function = (void *) arcofi_timer; |
| 131 | cs->dc.isac.arcofitimer.data = (long) cs; |
| 132 | init_timer(&cs->dc.isac.arcofitimer); |
| 133 | init_waitqueue_head(&cs->dc.isac.arcofi_wait); |
| 134 | test_and_set_bit(HW_ARCOFI, &cs->HW_Flags); |
| 135 | } |