^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 - fullscreen driver.
^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 2.5/2.6 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/memblock.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/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/ccwdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/cio.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) #include <asm/idals.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "raw3270.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) static struct raw3270_fn fs3270_fn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct fs3270 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct raw3270_view view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct pid *fs_pid; /* Pid of controlling program. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int read_command; /* ccw command to use for reads. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int write_command; /* ccw command to use for writes. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) int attention; /* Got attention. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) int active; /* Fullscreen view is active. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct raw3270_request *init; /* single init request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) wait_queue_head_t wait; /* Init & attention wait queue. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct idal_buffer *rdbuf; /* full-screen-deactivate buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) size_t rdbuf_size; /* size of data returned by RDBUF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static DEFINE_MUTEX(fs3270_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) fs3270_wake_up(struct raw3270_request *rq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) wake_up((wait_queue_head_t *) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static inline int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) fs3270_working(struct fs3270 *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * The fullscreen view is in working order if the view
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * has been activated AND the initial request is finished.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return fp->active && raw3270_request_final(fp->init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) fs3270_do_io(struct raw3270_view *view, struct raw3270_request *rq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) fp = (struct fs3270 *) view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) rq->callback = fs3270_wake_up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) rq->callback_data = &fp->wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (!fs3270_working(fp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /* Fullscreen view isn't ready yet. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) rc = wait_event_interruptible(fp->wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) fs3270_working(fp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (rc != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) rc = raw3270_start(view, rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (rc == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /* Started successfully. Now wait for completion. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) wait_event(fp->wait, raw3270_request_final(rq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) } while (rc == -EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * Switch to the fullscreen view.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) fs3270_reset_callback(struct raw3270_request *rq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) fp = (struct fs3270 *) rq->view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) raw3270_request_reset(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) wake_up(&fp->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) fs3270_restore_callback(struct raw3270_request *rq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) fp = (struct fs3270 *) rq->view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (rq->rc != 0 || rq->rescnt != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (fp->fs_pid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) kill_pid(fp->fs_pid, SIGHUP, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) fp->rdbuf_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) raw3270_request_reset(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) wake_up(&fp->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) fs3270_activate(struct raw3270_view *view)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) char *cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) fp = (struct fs3270 *) view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /* If an old init command is still running just return. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (!raw3270_request_final(fp->init))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (fp->rdbuf_size == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /* No saved buffer. Just clear the screen. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) raw3270_request_set_cmd(fp->init, TC_EWRITEA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) fp->init->callback = fs3270_reset_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /* Restore fullscreen buffer saved by fs3270_deactivate. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) raw3270_request_set_cmd(fp->init, TC_EWRITEA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) raw3270_request_set_idal(fp->init, fp->rdbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) fp->init->ccw.count = fp->rdbuf_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) cp = fp->rdbuf->data[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) cp[0] = TW_KR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) cp[1] = TO_SBA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) cp[2] = cp[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) cp[3] = cp[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) cp[4] = TO_IC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) cp[5] = TO_SBA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) cp[6] = 0x40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) cp[7] = 0x40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) fp->init->rescnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) fp->init->callback = fs3270_restore_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) rc = fp->init->rc = raw3270_start_locked(view, fp->init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) fp->init->callback(fp->init, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) fp->active = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * Shutdown fullscreen view.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) fs3270_save_callback(struct raw3270_request *rq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) fp = (struct fs3270 *) rq->view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /* Correct idal buffer element 0 address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) fp->rdbuf->data[0] -= 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) fp->rdbuf->size += 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * If the rdbuf command failed or the idal buffer is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * to small for the amount of data returned by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * rdbuf command, then we have no choice but to send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * a SIGHUP to the application.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (rq->rc != 0 || rq->rescnt == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (fp->fs_pid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) kill_pid(fp->fs_pid, SIGHUP, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) fp->rdbuf_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) fp->rdbuf_size = fp->rdbuf->size - rq->rescnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) raw3270_request_reset(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) wake_up(&fp->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) fs3270_deactivate(struct raw3270_view *view)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) fp = (struct fs3270 *) view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) fp->active = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /* If an old init command is still running just return. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (!raw3270_request_final(fp->init))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /* Prepare read-buffer request. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) raw3270_request_set_cmd(fp->init, TC_RDBUF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * Hackish: skip first 5 bytes of the idal buffer to make
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * room for the TW_KR/TO_SBA/<address>/<address>/TO_IC sequence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * in the activation command.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) fp->rdbuf->data[0] += 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) fp->rdbuf->size -= 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) raw3270_request_set_idal(fp->init, fp->rdbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) fp->init->rescnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) fp->init->callback = fs3270_save_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) /* Start I/O to read in the 3270 buffer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) fp->init->rc = raw3270_start_locked(view, fp->init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (fp->init->rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) fp->init->callback(fp->init, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) fs3270_irq(struct fs3270 *fp, struct raw3270_request *rq, struct irb *irb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) /* Handle ATTN. Set indication and wake waiters for attention. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) fp->attention = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) wake_up(&fp->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (rq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) rq->rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* Normal end. Copy residual count. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) rq->rescnt = irb->scsw.cmd.count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * Process reads from fullscreen 3270.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) fs3270_read(struct file *filp, char __user *data, size_t count, loff_t *off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct raw3270_request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) struct idal_buffer *ib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (count == 0 || count > 65535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) fp = filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (!fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) ib = idal_buffer_alloc(count, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (IS_ERR(ib))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) rq = raw3270_request_alloc(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (!IS_ERR(rq)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (fp->read_command == 0 && fp->write_command != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) fp->read_command = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) raw3270_request_set_cmd(rq, fp->read_command ? : 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) raw3270_request_set_idal(rq, ib);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) rc = wait_event_interruptible(fp->wait, fp->attention);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) fp->attention = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (rc == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) rc = fs3270_do_io(&fp->view, rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (rc == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) count -= rq->rescnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (idal_buffer_to_user(ib, data, count) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) rc = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) rc = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) raw3270_request_free(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) rc = PTR_ERR(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) idal_buffer_free(ib);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * Process writes to fullscreen 3270.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) fs3270_write(struct file *filp, const char __user *data, size_t count, loff_t *off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct raw3270_request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct idal_buffer *ib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) int write_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) ssize_t rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) fp = filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (!fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) ib = idal_buffer_alloc(count, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (IS_ERR(ib))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) rq = raw3270_request_alloc(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (!IS_ERR(rq)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) if (idal_buffer_from_user(ib, data, count) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) write_command = fp->write_command ? : 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (write_command == 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) write_command = 13;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) raw3270_request_set_cmd(rq, write_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) raw3270_request_set_idal(rq, ib);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) rc = fs3270_do_io(&fp->view, rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) rc = count - rq->rescnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) rc = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) raw3270_request_free(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) rc = PTR_ERR(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) idal_buffer_free(ib);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * process ioctl commands for the tube driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static long
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) fs3270_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) char __user *argp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct raw3270_iocb iocb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) fp = filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (!fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (is_compat_task())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) argp = compat_ptr(arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) argp = (char __user *)arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) mutex_lock(&fs3270_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) case TUBICMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) fp->read_command = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) case TUBOCMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) fp->write_command = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) case TUBGETI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) rc = put_user(fp->read_command, argp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) case TUBGETO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) rc = put_user(fp->write_command, argp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) case TUBGETMOD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) iocb.model = fp->view.model;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) iocb.line_cnt = fp->view.rows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) iocb.col_cnt = fp->view.cols;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) iocb.pf_cnt = 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) iocb.re_cnt = 20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) iocb.map = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) if (copy_to_user(argp, &iocb, sizeof(struct raw3270_iocb)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) rc = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) mutex_unlock(&fs3270_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) * Allocate fs3270 structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) static struct fs3270 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) fs3270_alloc_view(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) fp = kzalloc(sizeof(struct fs3270),GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (!fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) fp->init = raw3270_request_alloc(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (IS_ERR(fp->init)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) kfree(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) return fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) * Free fs3270 structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) fs3270_free_view(struct raw3270_view *view)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) fp = (struct fs3270 *) view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (fp->rdbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) idal_buffer_free(fp->rdbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) raw3270_request_free(((struct fs3270 *) view)->init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) kfree(view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * Unlink fs3270 data structure from filp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) fs3270_release(struct raw3270_view *view)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) fp = (struct fs3270 *) view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) if (fp->fs_pid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) kill_pid(fp->fs_pid, SIGHUP, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) /* View to a 3270 device. Can be console, tty or fullscreen. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) static struct raw3270_fn fs3270_fn = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) .activate = fs3270_activate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) .deactivate = fs3270_deactivate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) .intv = (void *) fs3270_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) .release = fs3270_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) .free = fs3270_free_view
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) * This routine is called whenever a 3270 fullscreen device is opened.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) fs3270_open(struct inode *inode, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct idal_buffer *ib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) int minor, rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (imajor(file_inode(filp)) != IBM_FS3270_MAJOR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) minor = iminor(file_inode(filp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) /* Check for minor 0 multiplexer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (minor == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) struct tty_struct *tty = get_current_tty();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (!tty || tty->driver->major != IBM_TTY3270_MAJOR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) tty_kref_put(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) minor = tty->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) tty_kref_put(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) mutex_lock(&fs3270_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) /* Check if some other program is already using fullscreen mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) fp = (struct fs3270 *) raw3270_find_view(&fs3270_fn, minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (!IS_ERR(fp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) raw3270_put_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) rc = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) /* Allocate fullscreen view structure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) fp = fs3270_alloc_view();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (IS_ERR(fp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) rc = PTR_ERR(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) init_waitqueue_head(&fp->wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) fp->fs_pid = get_pid(task_pid(current));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) rc = raw3270_add_view(&fp->view, &fs3270_fn, minor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) RAW3270_VIEW_LOCK_BH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) fs3270_free_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) /* Allocate idal-buffer. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) ib = idal_buffer_alloc(2*fp->view.rows*fp->view.cols + 5, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (IS_ERR(ib)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) raw3270_put_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) raw3270_del_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) rc = PTR_ERR(ib);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) fp->rdbuf = ib;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) rc = raw3270_activate_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) raw3270_put_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) raw3270_del_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) stream_open(inode, filp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) filp->private_data = fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) mutex_unlock(&fs3270_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) * This routine is called when the 3270 tty is closed. We wait
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) * for the remaining request to be completed. Then we clean up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) fs3270_close(struct inode *inode, struct file *filp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) struct fs3270 *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) fp = filp->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) filp->private_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (fp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) put_pid(fp->fs_pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) fp->fs_pid = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) raw3270_reset(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) raw3270_put_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) raw3270_del_view(&fp->view);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) static const struct file_operations fs3270_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) .owner = THIS_MODULE, /* owner */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) .read = fs3270_read, /* read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) .write = fs3270_write, /* write */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) .unlocked_ioctl = fs3270_ioctl, /* ioctl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) .compat_ioctl = fs3270_ioctl, /* ioctl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) .open = fs3270_open, /* open */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) .release = fs3270_close, /* release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) .llseek = no_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) static void fs3270_create_cb(int minor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) __register_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub", &fs3270_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, minor),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) NULL, "3270/tub%d", minor);
^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) static void fs3270_destroy_cb(int minor)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, minor));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) __unregister_chrdev(IBM_FS3270_MAJOR, minor, 1, "tub");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) static struct raw3270_notifier fs3270_notifier =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) .create = fs3270_create_cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) .destroy = fs3270_destroy_cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * 3270 fullscreen driver initialization.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) static int __init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) fs3270_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) rc = __register_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270", &fs3270_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) device_create(class3270, NULL, MKDEV(IBM_FS3270_MAJOR, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) NULL, "3270/tub");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) raw3270_register_notifier(&fs3270_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) static void __exit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) fs3270_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) raw3270_unregister_notifier(&fs3270_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) device_destroy(class3270, MKDEV(IBM_FS3270_MAJOR, 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) __unregister_chrdev(IBM_FS3270_MAJOR, 0, 1, "fs3270");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) MODULE_ALIAS_CHARDEV_MAJOR(IBM_FS3270_MAJOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) module_init(fs3270_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) module_exit(fs3270_exit);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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