^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * IBM/3270 Driver - console view.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Author(s):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Original 3270 Code for 2.4 written by Richard Hitt (UTS Global)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Rewritten for 2.5 by Martin Schwidefsky <schwidefsky@de.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright IBM Corp. 2003, 2009
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/console.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/reboot.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/ccwdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/cio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/cpcmd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/ebcdic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "raw3270.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "tty3270.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "ctrlchar.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define CON3270_OUTPUT_BUFFER_SIZE 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define CON3270_STRING_PAGES 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static struct raw3270_fn con3270_fn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static bool auto_update = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) module_param(auto_update, bool, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * Main 3270 console view data structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct con3270 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct raw3270_view view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct list_head freemem; /* list of free memory for strings. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* Output stuff. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct list_head lines; /* list of lines. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct list_head update; /* list of lines to update. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int line_nr; /* line number for next update. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int nr_lines; /* # lines in list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) int nr_up; /* # lines up in history. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) unsigned long update_flags; /* Update indication bits. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct string *cline; /* current output line. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct string *status; /* last line of display. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct raw3270_request *write; /* single write request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct timer_list timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* Input stuff. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct string *input; /* input string for read request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct raw3270_request *read; /* single read request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct raw3270_request *kreset; /* single keyboard reset request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct tasklet_struct readlet; /* tasklet to issue read request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static struct con3270 *condev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* con3270->update_flags. See con3270_update for details. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define CON_UPDATE_ERASE 1 /* Use EWRITEA instead of WRITE. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define CON_UPDATE_LIST 2 /* Update lines in tty3270->update. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define CON_UPDATE_STATUS 4 /* Update status line. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #define CON_UPDATE_ALL 8 /* Recreate screen. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static void con3270_update(struct timer_list *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * Setup timeout for a device. On timeout trigger an update.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static void con3270_set_timer(struct con3270 *cp, int expires)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (expires == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) del_timer(&cp->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) mod_timer(&cp->timer, jiffies + expires);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * The status line is the last line of the screen. It shows the string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * "console view" in the lower left corner and "Running"/"More..."/"Holding"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * in the lower right corner of the screen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) con3270_update_status(struct con3270 *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) char *str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) str = (cp->nr_up != 0) ? "History" : "Running";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) memcpy(cp->status->string + 24, str, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) codepage_convert(cp->view.ascebc, cp->status->string + 24, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) cp->update_flags |= CON_UPDATE_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) con3270_create_status(struct con3270 *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static const unsigned char blueprint[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) { TO_SBA, 0, 0, TO_SF,TF_LOG,TO_SA,TAT_COLOR, TAC_GREEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 'c','o','n','s','o','l','e',' ','v','i','e','w',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) TO_RA,0,0,0,'R','u','n','n','i','n','g',TO_SF,TF_LOG };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) cp->status = alloc_string(&cp->freemem, sizeof(blueprint));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /* Copy blueprint to status line */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) memcpy(cp->status->string, blueprint, sizeof(blueprint));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /* Set TO_RA addresses. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) raw3270_buffer_address(cp->view.dev, cp->status->string + 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) cp->view.cols * (cp->view.rows - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) raw3270_buffer_address(cp->view.dev, cp->status->string + 21,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) cp->view.cols * cp->view.rows - 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /* Convert strings to ebcdic. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) codepage_convert(cp->view.ascebc, cp->status->string + 8, 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) codepage_convert(cp->view.ascebc, cp->status->string + 24, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * Set output offsets to 3270 datastream fragment of a console string.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) con3270_update_string(struct con3270 *cp, struct string *s, int nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (s->len < 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /* This indicates a bug, but printing a warning would
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * cause a deadlock. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (s->string[s->len - 4] != TO_RA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) raw3270_buffer_address(cp->view.dev, s->string + s->len - 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) cp->view.cols * (nr + 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * Rebuild update list to print all lines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) con3270_rebuild_update(struct con3270 *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct string *s, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) int nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * Throw away update list and create a new one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * containing all lines that will fit on the screen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) list_for_each_entry_safe(s, n, &cp->update, update)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) list_del_init(&s->update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) nr = cp->view.rows - 2 + cp->nr_up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) list_for_each_entry_reverse(s, &cp->lines, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (nr < cp->view.rows - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) list_add(&s->update, &cp->update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) if (--nr < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) cp->line_nr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) cp->update_flags |= CON_UPDATE_LIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * Alloc string for size bytes. Free strings from history if necessary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static struct string *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) con3270_alloc_string(struct con3270 *cp, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct string *s, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) s = alloc_string(&cp->freemem, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) return s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) list_for_each_entry_safe(s, n, &cp->lines, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) list_del(&s->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if (!list_empty(&s->update))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) list_del(&s->update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) cp->nr_lines--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (free_string(&cp->freemem, s) >= size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) s = alloc_string(&cp->freemem, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) BUG_ON(!s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (cp->nr_up != 0 && cp->nr_up + cp->view.rows > cp->nr_lines) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) cp->nr_up = cp->nr_lines - cp->view.rows + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) con3270_rebuild_update(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) con3270_update_status(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * Write completion callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) con3270_write_callback(struct raw3270_request *rq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) raw3270_request_reset(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) xchg(&((struct con3270 *) rq->view)->write, rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * Update console display.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) con3270_update(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct con3270 *cp = from_timer(cp, t, timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct raw3270_request *wrq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) char wcc, prolog[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) unsigned long updated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct string *s, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (!auto_update && !raw3270_view_active(&cp->view))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (cp->view.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) raw3270_activate_view(&cp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) wrq = xchg(&cp->write, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (!wrq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) con3270_set_timer(cp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) spin_lock_irqsave(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) updated = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (cp->update_flags & CON_UPDATE_ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) con3270_rebuild_update(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) con3270_update_status(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) cp->update_flags = CON_UPDATE_ERASE | CON_UPDATE_LIST |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) CON_UPDATE_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (cp->update_flags & CON_UPDATE_ERASE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /* Use erase write alternate to initialize display. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) raw3270_request_set_cmd(wrq, TC_EWRITEA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) updated |= CON_UPDATE_ERASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) raw3270_request_set_cmd(wrq, TC_WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) wcc = TW_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) raw3270_request_add_data(wrq, &wcc, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * Update status line.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (cp->update_flags & CON_UPDATE_STATUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (raw3270_request_add_data(wrq, cp->status->string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) cp->status->len) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) updated |= CON_UPDATE_STATUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (cp->update_flags & CON_UPDATE_LIST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) prolog[0] = TO_SBA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) prolog[3] = TO_SA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) prolog[4] = TAT_COLOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) prolog[5] = TAC_TURQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) raw3270_buffer_address(cp->view.dev, prolog + 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) cp->view.cols * cp->line_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) raw3270_request_add_data(wrq, prolog, 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* Write strings in the update list to the screen. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) list_for_each_entry_safe(s, n, &cp->update, update) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (s != cp->cline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) con3270_update_string(cp, s, cp->line_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (raw3270_request_add_data(wrq, s->string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) s->len) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) list_del_init(&s->update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (s != cp->cline)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) cp->line_nr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (list_empty(&cp->update))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) updated |= CON_UPDATE_LIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) wrq->callback = con3270_write_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) rc = raw3270_start(&cp->view, wrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (rc == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) cp->update_flags &= ~updated;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (cp->update_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) con3270_set_timer(cp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) raw3270_request_reset(wrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) xchg(&cp->write, wrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) spin_unlock_irqrestore(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * Read tasklet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) con3270_read_tasklet(struct raw3270_request *rrq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) static char kreset_data = TW_KR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct con3270 *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) int nr_up, deactivate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) cp = (struct con3270 *) rrq->view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) spin_lock_irqsave(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) nr_up = cp->nr_up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) deactivate = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) /* Check aid byte. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) switch (cp->input->string[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) case 0x7d: /* enter: jump to bottom. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) nr_up = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) case 0xf3: /* PF3: deactivate the console view. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) deactivate = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) case 0x6d: /* clear: start from scratch. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) cp->update_flags = CON_UPDATE_ALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) con3270_set_timer(cp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) case 0xf7: /* PF7: do a page up in the console log. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) nr_up += cp->view.rows - 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (nr_up + cp->view.rows - 1 > cp->nr_lines) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) nr_up = cp->nr_lines - cp->view.rows + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (nr_up < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) nr_up = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) case 0xf8: /* PF8: do a page down in the console log. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) nr_up -= cp->view.rows - 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (nr_up < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) nr_up = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (nr_up != cp->nr_up) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) cp->nr_up = nr_up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) con3270_rebuild_update(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) con3270_update_status(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) con3270_set_timer(cp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) spin_unlock_irqrestore(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) /* Start keyboard reset command. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) raw3270_request_reset(cp->kreset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) raw3270_request_set_cmd(cp->kreset, TC_WRITE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) raw3270_request_add_data(cp->kreset, &kreset_data, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) raw3270_start(&cp->view, cp->kreset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (deactivate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) raw3270_deactivate_view(&cp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) raw3270_request_reset(rrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) xchg(&cp->read, rrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) raw3270_put_view(&cp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) * Read request completion callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) con3270_read_callback(struct raw3270_request *rq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) raw3270_get_view(rq->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) /* Schedule tasklet to pass input to tty. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) tasklet_schedule(&((struct con3270 *) rq->view)->readlet);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) * Issue a read request. Called only from interrupt function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) con3270_issue_read(struct con3270 *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) struct raw3270_request *rrq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) rrq = xchg(&cp->read, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (!rrq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) /* Read already scheduled. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) rrq->callback = con3270_read_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) rrq->callback_data = cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) raw3270_request_set_cmd(rrq, TC_READMOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) raw3270_request_set_data(rrq, cp->input->string, cp->input->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* Issue the read modified request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) rc = raw3270_start_irq(&cp->view, rrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) raw3270_request_reset(rrq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * Switch to the console view.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) con3270_activate(struct raw3270_view *view)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) struct con3270 *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) cp = (struct con3270 *) view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) cp->update_flags = CON_UPDATE_ALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) con3270_set_timer(cp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) con3270_deactivate(struct raw3270_view *view)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) struct con3270 *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) cp = (struct con3270 *) view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) del_timer(&cp->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) con3270_irq(struct con3270 *cp, struct raw3270_request *rq, struct irb *irb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) /* Handle ATTN. Schedule tasklet to read aid. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) con3270_issue_read(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (rq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) rq->rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) /* Normal end. Copy residual count. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) rq->rescnt = irb->scsw.cmd.count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) } else if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) /* Interrupt without an outstanding request -> update all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) cp->update_flags = CON_UPDATE_ALL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) con3270_set_timer(cp, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) /* Console view to a 3270 device. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) static struct raw3270_fn con3270_fn = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) .activate = con3270_activate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) .deactivate = con3270_deactivate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) .intv = (void *) con3270_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) con3270_cline_add(struct con3270 *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (!list_empty(&cp->cline->list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /* Already added. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) list_add_tail(&cp->cline->list, &cp->lines);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) cp->nr_lines++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) con3270_rebuild_update(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) con3270_cline_insert(struct con3270 *cp, unsigned char c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) cp->cline->string[cp->cline->len++] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) cp->view.ascebc[(c < ' ') ? ' ' : c];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (list_empty(&cp->cline->update)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) list_add_tail(&cp->cline->update, &cp->update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) cp->update_flags |= CON_UPDATE_LIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) con3270_cline_end(struct con3270 *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) struct string *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) unsigned int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) /* Copy cline. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) size = (cp->cline->len < cp->view.cols - 5) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) cp->cline->len + 4 : cp->view.cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) s = con3270_alloc_string(cp, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) memcpy(s->string, cp->cline->string, cp->cline->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) if (cp->cline->len < cp->view.cols - 5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) s->string[s->len - 4] = TO_RA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) s->string[s->len - 1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) while (--size >= cp->cline->len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) s->string[size] = cp->view.ascebc[' '];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /* Replace cline with allocated line s and reset cline. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) list_add(&s->list, &cp->cline->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) list_del_init(&cp->cline->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (!list_empty(&cp->cline->update)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) list_add(&s->update, &cp->cline->update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) list_del_init(&cp->cline->update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) cp->cline->len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * Write a string to the 3270 console
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) con3270_write(struct console *co, const char *str, unsigned int count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) struct con3270 *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) unsigned char c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) cp = condev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) spin_lock_irqsave(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) while (count-- > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) c = *str++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (cp->cline->len == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) con3270_cline_add(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (c != '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) con3270_cline_insert(cp, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (c == '\n' || cp->cline->len >= cp->view.cols)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) con3270_cline_end(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) /* Setup timer to output current console buffer after 1/10 second */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) cp->nr_up = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (cp->view.dev && !timer_pending(&cp->timer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) con3270_set_timer(cp, HZ/10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) spin_unlock_irqrestore(&cp->view.lock,flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) static struct tty_driver *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) con3270_device(struct console *c, int *index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) *index = c->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) return tty3270_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * Wait for end of write request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) con3270_wait_write(struct con3270 *cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) while (!cp->write) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) raw3270_wait_cons_dev(cp->view.dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * panic() calls con3270_flush through a panic_notifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * before the system enters a disabled, endless loop.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) con3270_flush(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct con3270 *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) cp = condev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) if (!cp->view.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) raw3270_pm_unfreeze(&cp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) raw3270_activate_view(&cp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) spin_lock_irqsave(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) con3270_wait_write(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) cp->nr_up = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) con3270_rebuild_update(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) con3270_update_status(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) while (cp->update_flags != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) spin_unlock_irqrestore(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) con3270_update(&cp->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) spin_lock_irqsave(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) con3270_wait_write(cp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) spin_unlock_irqrestore(&cp->view.lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) static int con3270_notify(struct notifier_block *self,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) unsigned long event, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) con3270_flush();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) return NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) static struct notifier_block on_panic_nb = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) .notifier_call = con3270_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) .priority = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) static struct notifier_block on_reboot_nb = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) .notifier_call = con3270_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) .priority = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * The console structure for the 3270 console
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) static struct console con3270 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) .name = "tty3270",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) .write = con3270_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) .device = con3270_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) .flags = CON_PRINTBUFFER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) * 3270 console initialization code called from console_init().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) static int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) con3270_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) struct raw3270 *rp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) void *cbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) /* Check if 3270 is to be the console */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (!CONSOLE_IS_3270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) /* Set the console mode for VM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (MACHINE_IS_VM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) cpcmd("TERM CONMODE 3270", NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) cpcmd("TERM AUTOCR OFF", NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) rp = raw3270_setup_console();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) if (IS_ERR(rp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) return PTR_ERR(rp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) condev = kzalloc(sizeof(struct con3270), GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) if (!condev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) condev->view.dev = rp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) condev->read = raw3270_request_alloc(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) condev->read->callback = con3270_read_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) condev->read->callback_data = condev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) condev->write = raw3270_request_alloc(CON3270_OUTPUT_BUFFER_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) condev->kreset = raw3270_request_alloc(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) INIT_LIST_HEAD(&condev->lines);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) INIT_LIST_HEAD(&condev->update);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) timer_setup(&condev->timer, con3270_update, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) tasklet_init(&condev->readlet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) (void (*)(unsigned long)) con3270_read_tasklet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) (unsigned long) condev->read);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) raw3270_add_view(&condev->view, &con3270_fn, 1, RAW3270_VIEW_LOCK_IRQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) INIT_LIST_HEAD(&condev->freemem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) for (i = 0; i < CON3270_STRING_PAGES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) cbuf = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) add_string_memory(&condev->freemem, cbuf, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) condev->cline = alloc_string(&condev->freemem, condev->view.cols);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) condev->cline->len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) con3270_create_status(condev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) condev->input = alloc_string(&condev->freemem, 80);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) register_reboot_notifier(&on_reboot_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) register_console(&con3270);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) console_initcall(con3270_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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