From: Sven Schnelle Date: Sat, 26 Nov 2022 22:24:43 +0000 (+0100) Subject: s390/con3270: move tty3270_convert_line() X-Git-Tag: v6.6.17~5518^2~152 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2b62ba58b362be224b0bfe4dd216374cd3ebcaac;p=platform%2Fkernel%2Flinux-rpi.git s390/con3270: move tty3270_convert_line() To make the upcoming patches easier to read, move tty3270_convert_line() before changing code. No functional change. Signed-off-by: Sven Schnelle Acked-by: Heiko Carstens Tested-by: Niklas Schnelle Signed-off-by: Heiko Carstens --- diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c index 0a4fce0..3c4e9f8 100644 --- a/drivers/s390/char/con3270.c +++ b/drivers/s390/char/con3270.c @@ -362,6 +362,168 @@ static void tty3270_write_callback(struct raw3270_request *rq, void *data) xchg(&tp->write, rq); } +static int tty3270_required_length(struct tty3270 *tp, int line_nr) +{ + unsigned char f_color, b_color, highlight; + struct tty3270_line *line; + struct tty3270_cell *cell; + int i, flen = 3; /* Prefix (TO_SBA). */ + + line = tp->screen + line_nr; + flen += line->len; + highlight = TAX_RESET; + f_color = TAC_RESET; + b_color = TAC_RESET; + + for (i = 0, cell = line->cells; i < line->len; i++, cell++) { + if (cell->attributes.highlight != highlight) { + flen += 3; /* TO_SA to switch highlight. */ + highlight = cell->attributes.highlight; + } + if (cell->attributes.f_color != f_color) { + flen += 3; /* TO_SA to switch color. */ + f_color = cell->attributes.f_color; + } + if (cell->attributes.b_color != b_color) { + flen += 3; /* TO_SA to switch color. */ + b_color = cell->attributes.b_color; + } + if (cell->attributes.alternate_charset) + flen += 1; /* TO_GE to switch to graphics extensions */ + } + if (highlight != TAX_RESET) + flen += 3; /* TO_SA to reset hightlight. */ + if (f_color != TAC_RESET) + flen += 3; /* TO_SA to reset color. */ + if (b_color != TAC_RESET) + flen += 3; /* TO_SA to reset color. */ + if (line->len < tp->view.cols) + flen += 4; /* Postfix (TO_RA). */ + + return flen; +} + +static char *tty3270_add_reset_attributes(struct tty3270 *tp, struct tty3270_line *line, + char *cp, struct tty3270_attribute *attr) +{ + if (attr->highlight != TAX_RESET) { + *cp++ = TO_SA; + *cp++ = TAT_EXTHI; + *cp++ = TAX_RESET; + } + if (attr->f_color != TAC_RESET) { + *cp++ = TO_SA; + *cp++ = TAT_FGCOLOR; + *cp++ = TAC_RESET; + } + if (attr->b_color != TAC_RESET) { + *cp++ = TO_SA; + *cp++ = TAT_BGCOLOR; + *cp++ = TAC_RESET; + } + if (line->len < tp->view.cols) { + *cp++ = TO_RA; + *cp++ = 0; + *cp++ = 0; + *cp++ = 0; + } + return cp; +} + +static char *tty3270_add_attributes(struct tty3270_line *line, struct tty3270_attribute *attr, + char *cp) +{ + struct tty3270_cell *cell; + int i; + + *cp++ = TO_SBA; + *cp++ = 0; + *cp++ = 0; + + for (i = 0, cell = line->cells; i < line->len; i++, cell++) { + if (cell->attributes.highlight != attr->highlight) { + *cp++ = TO_SA; + *cp++ = TAT_EXTHI; + *cp++ = cell->attributes.highlight; + attr->highlight = cell->attributes.highlight; + } + if (cell->attributes.f_color != attr->f_color) { + *cp++ = TO_SA; + *cp++ = TAT_FGCOLOR; + *cp++ = cell->attributes.f_color; + attr->f_color = cell->attributes.f_color; + } + if (cell->attributes.b_color != attr->b_color) { + *cp++ = TO_SA; + *cp++ = TAT_BGCOLOR; + *cp++ = cell->attributes.b_color; + attr->b_color = cell->attributes.b_color; + } + if (cell->attributes.alternate_charset) + *cp++ = TO_GE; + *cp++ = cell->character; + } + return cp; +} + +static void tty3270_reset_attributes(struct tty3270_attribute *attr) +{ + attr->highlight = TAX_RESET; + attr->f_color = TAC_RESET; + attr->b_color = TAC_RESET; +} + +static struct string *tty3270_resize_line(struct tty3270 *tp, struct string *s, int newlen) +{ + struct string *n = tty3270_alloc_string(tp, newlen); + + list_add(&n->list, &s->list); + list_del_init(&s->list); + if (!list_empty(&s->update)) + list_del_init(&s->update); + free_string(&tp->freemem, s); + return n; +} + +/* + * Convert a tty3270_line to a 3270 data fragment usable for output. + */ +static void tty3270_convert_line(struct tty3270 *tp, int line_nr) +{ + struct tty3270_line *line = tp->screen + line_nr; + struct tty3270_attribute attr; + struct string *s; + int flen, i; + char *cp; + + /* Determine how long the fragment will be. */ + flen = tty3270_required_length(tp, line_nr); + /* Find the line in the list. */ + i = tty3270_tty_rows(tp) - line_nr; + list_for_each_entry_reverse(s, &tp->lines, list) + if (--i <= 0) + break; + /* + * Check if the line needs to get reallocated. + */ + if (s->len != flen) + s = tty3270_resize_line(tp, s, flen); + + /* Write 3270 data fragment. */ + tty3270_reset_attributes(&attr); + cp = tty3270_add_attributes(line, &attr, s->string); + cp = tty3270_add_reset_attributes(tp, line, cp, &attr); + if (tp->nr_up + line_nr < tty3270_tty_rows(tp)) { + /* Line is currently visible on screen. */ + tty3270_update_string(tp, s, line_nr); + /* Add line to update list. */ + if (list_empty(&s->update)) { + list_add_tail(&s->update, &tp->update); + tp->update_flags |= TTY_UPDATE_LIST; + } + } +} + /* * Update 3270 display. */ @@ -1109,18 +1271,6 @@ static char tty3270_graphics_translate(struct tty3270 *tp, char ch) } } -static struct string *tty3270_resize_line(struct tty3270 *tp, struct string *s, int newlen) -{ - struct string *n = tty3270_alloc_string(tp, newlen); - - list_add(&n->list, &s->list); - list_del_init(&s->list); - if (!list_empty(&s->update)) - list_del_init(&s->update); - free_string(&tp->freemem, s); - return n; -} - /* * Insert character into the screen at the current position with the * current color and highlight. This function does NOT do cursor movement. @@ -1148,156 +1298,6 @@ static void tty3270_put_character(struct tty3270 *tp, char ch) cell->attributes = tp->attributes; } -static int tty3270_required_length(struct tty3270 *tp, int line_nr) -{ - unsigned char f_color, b_color, highlight; - struct tty3270_line *line; - struct tty3270_cell *cell; - int i, flen = 3; /* Prefix (TO_SBA). */ - - line = tp->screen + line_nr; - flen += line->len; - highlight = TAX_RESET; - f_color = TAC_RESET; - b_color = TAC_RESET; - - for (i = 0, cell = line->cells; i < line->len; i++, cell++) { - if (cell->attributes.highlight != highlight) { - flen += 3; /* TO_SA to switch highlight. */ - highlight = cell->attributes.highlight; - } - if (cell->attributes.f_color != f_color) { - flen += 3; /* TO_SA to switch color. */ - f_color = cell->attributes.f_color; - } - if (cell->attributes.b_color != b_color) { - flen += 3; /* TO_SA to switch color. */ - b_color = cell->attributes.b_color; - } - if (cell->attributes.alternate_charset) - flen += 1; /* TO_GE to switch to graphics extensions */ - } - if (highlight != TAX_RESET) - flen += 3; /* TO_SA to reset hightlight. */ - if (f_color != TAC_RESET) - flen += 3; /* TO_SA to reset color. */ - if (b_color != TAC_RESET) - flen += 3; /* TO_SA to reset color. */ - if (line->len < tp->view.cols) - flen += 4; /* Postfix (TO_RA). */ - - return flen; -} - -static char *tty3270_add_reset_attributes(struct tty3270 *tp, struct tty3270_line *line, - char *cp, struct tty3270_attribute *attr) -{ - if (attr->highlight != TAX_RESET) { - *cp++ = TO_SA; - *cp++ = TAT_EXTHI; - *cp++ = TAX_RESET; - } - if (attr->f_color != TAC_RESET) { - *cp++ = TO_SA; - *cp++ = TAT_FGCOLOR; - *cp++ = TAC_RESET; - } - if (attr->b_color != TAC_RESET) { - *cp++ = TO_SA; - *cp++ = TAT_BGCOLOR; - *cp++ = TAC_RESET; - } - if (line->len < tp->view.cols) { - *cp++ = TO_RA; - *cp++ = 0; - *cp++ = 0; - *cp++ = 0; - } - return cp; -} - -static char *tty3270_add_attributes(struct tty3270_line *line, struct tty3270_attribute *attr, - char *cp) -{ - struct tty3270_cell *cell; - int i; - - *cp++ = TO_SBA; - *cp++ = 0; - *cp++ = 0; - - for (i = 0, cell = line->cells; i < line->len; i++, cell++) { - if (cell->attributes.highlight != attr->highlight) { - *cp++ = TO_SA; - *cp++ = TAT_EXTHI; - *cp++ = cell->attributes.highlight; - attr->highlight = cell->attributes.highlight; - } - if (cell->attributes.f_color != attr->f_color) { - *cp++ = TO_SA; - *cp++ = TAT_FGCOLOR; - *cp++ = cell->attributes.f_color; - attr->f_color = cell->attributes.f_color; - } - if (cell->attributes.b_color != attr->b_color) { - *cp++ = TO_SA; - *cp++ = TAT_BGCOLOR; - *cp++ = cell->attributes.b_color; - attr->b_color = cell->attributes.b_color; - } - if (cell->attributes.alternate_charset) - *cp++ = TO_GE; - *cp++ = cell->character; - } - return cp; -} - -static void tty3270_reset_attributes(struct tty3270_attribute *attr) -{ - attr->highlight = TAX_RESET; - attr->f_color = TAC_RESET; - attr->b_color = TAC_RESET; -} - -/* - * Convert a tty3270_line to a 3270 data fragment usable for output. - */ -static void tty3270_convert_line(struct tty3270 *tp, int line_nr) -{ - struct tty3270_line *line = tp->screen + line_nr; - struct tty3270_attribute attr; - struct string *s; - int flen, i; - char *cp; - - /* Determine how long the fragment will be. */ - flen = tty3270_required_length(tp, line_nr); - /* Find the line in the list. */ - i = tty3270_tty_rows(tp) - line_nr; - list_for_each_entry_reverse(s, &tp->lines, list) - if (--i <= 0) - break; - /* - * Check if the line needs to get reallocated. - */ - if (s->len != flen) - s = tty3270_resize_line(tp, s, flen); - - /* Write 3270 data fragment. */ - tty3270_reset_attributes(&attr); - cp = tty3270_add_attributes(line, &attr, s->string); - cp = tty3270_add_reset_attributes(tp, line, cp, &attr); - if (tp->nr_up + line_nr < tty3270_tty_rows(tp)) { - /* Line is currently visible on screen. */ - tty3270_update_string(tp, s, line_nr); - /* Add line to update list. */ - if (list_empty(&s->update)) { - list_add_tail(&s->update, &tp->update); - tp->update_flags |= TTY_UPDATE_LIST; - } - } -} - /* * Do carriage return. */