From 23fa18eaa71266feff7ba8d83022d9e1cc83c65a Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:42:03 +0000
Subject: [PATCH] disable pwm7
---
kernel/drivers/video/fbdev/core/fbcon.c | 488 +++++++++++++++++++++++++++--------------------------
1 files changed, 251 insertions(+), 237 deletions(-)
diff --git a/kernel/drivers/video/fbdev/core/fbcon.c b/kernel/drivers/video/fbdev/core/fbcon.c
index bf7959f..6d58c8a 100644
--- a/kernel/drivers/video/fbdev/core/fbcon.c
+++ b/kernel/drivers/video/fbdev/core/fbcon.c
@@ -76,6 +76,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/crc32.h> /* For counting font checksums */
+#include <linux/uaccess.h>
#include <asm/fb.h>
#include <asm/irq.h>
@@ -87,13 +88,32 @@
# define DPRINTK(fmt, args...)
#endif
+/*
+ * FIXME: Locking
+ *
+ * - fbcon state itself is protected by the console_lock, and the code does a
+ * pretty good job at making sure that lock is held everywhere it's needed.
+ *
+ * - access to the registered_fb array is entirely unprotected. This should use
+ * proper object lifetime handling, i.e. get/put_fb_info. This also means
+ * switching from indices to proper pointers for fb_info everywhere.
+ *
+ * - fbcon doesn't bother with fb_lock/unlock at all. This is buggy, since it
+ * means concurrent access to the same fbdev from both fbcon and userspace
+ * will blow up. To fix this all fbcon calls from fbmem.c need to be moved out
+ * of fb_lock/unlock protected sections, since otherwise we'll recurse and
+ * deadlock eventually. Aside: Due to these deadlock issues the fbdev code in
+ * fbmem.c cannot use locking asserts, and there's lots of callers which get
+ * the rules wrong, e.g. fbsysfs.c entirely missed fb_lock/unlock calls too.
+ */
+
enum {
FBCON_LOGO_CANSHOW = -1, /* the logo can be shown */
FBCON_LOGO_DRAW = -2, /* draw the logo to a console */
FBCON_LOGO_DONTSHOW = -3 /* do not show the logo */
};
-static struct display fb_display[MAX_NR_CONSOLES];
+static struct fbcon_display fb_display[MAX_NR_CONSOLES];
static signed char con2fb_map[MAX_NR_CONSOLES];
static signed char con2fb_map_boot[MAX_NR_CONSOLES];
@@ -103,10 +123,9 @@
enums. */
static int logo_shown = FBCON_LOGO_CANSHOW;
/* console mappings */
-static int first_fb_vc;
-static int last_fb_vc = MAX_NR_CONSOLES - 1;
+static unsigned int first_fb_vc;
+static unsigned int last_fb_vc = MAX_NR_CONSOLES - 1;
static int fbcon_is_default = 1;
-static int fbcon_has_exited;
static int primary_device = -1;
static int fbcon_has_console_bind;
@@ -144,8 +163,6 @@
#define advance_row(p, delta) (unsigned short *)((unsigned long)(p) + (delta) * vc->vc_size_row)
-static int fbcon_set_origin(struct vc_data *);
-
static int fbcon_cursor_noblink;
#define divides(a, b) ((!(a) || (b)%(a)) ? 0 : 1)
@@ -177,11 +194,11 @@
static __inline__ void ywrap_down(struct vc_data *vc, int count);
static __inline__ void ypan_up(struct vc_data *vc, int count);
static __inline__ void ypan_down(struct vc_data *vc, int count);
-static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
+static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
int dy, int dx, int height, int width, u_int y_break);
static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
int unit);
-static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
+static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
int line, int count, int dy);
static void fbcon_modechanged(struct fb_info *info);
static void fbcon_set_all_vcs(struct fb_info *info);
@@ -212,7 +229,7 @@
fb_info = registered_fb[con2fb_map[ops->currcon]];
if (info == fb_info) {
- struct display *p = &fb_display[ops->currcon];
+ struct fbcon_display *p = &fb_display[ops->currcon];
if (rotate < 4)
p->con_rotate = rotate;
@@ -227,7 +244,7 @@
{
struct fbcon_ops *ops = info->fbcon_par;
struct vc_data *vc;
- struct display *p;
+ struct fbcon_display *p;
int i;
if (!ops || ops->currcon < 0 || rotate > 3)
@@ -276,8 +293,7 @@
struct fbcon_ops *ops = info->fbcon_par;
return (info->state != FBINFO_STATE_RUNNING ||
- vc->vc_mode != KD_TEXT || ops->graphics) &&
- !vt_force_oops_output(vc);
+ vc->vc_mode != KD_TEXT || ops->graphics);
}
static int get_color(struct vc_data *vc, struct fb_info *info,
@@ -456,10 +472,12 @@
options += 3;
if (*options)
first_fb_vc = simple_strtoul(options, &options, 10) - 1;
- if (first_fb_vc < 0)
+ if (first_fb_vc >= MAX_NR_CONSOLES)
first_fb_vc = 0;
if (*options++ == '-')
last_fb_vc = simple_strtoul(options, &options, 10) - 1;
+ if (last_fb_vc < first_fb_vc || last_fb_vc >= MAX_NR_CONSOLES)
+ last_fb_vc = MAX_NR_CONSOLES - 1;
fbcon_is_default = 0;
continue;
}
@@ -485,6 +503,20 @@
continue;
}
#endif
+
+ if (!strncmp(options, "logo-pos:", 9)) {
+ options += 9;
+ if (!strcmp(options, "center"))
+ fb_center_logo = true;
+ continue;
+ }
+
+ if (!strncmp(options, "logo-count:", 11)) {
+ options += 11;
+ if (*options)
+ fb_logo_count = simple_strtol(options, &options, 0);
+ continue;
+ }
}
return 1;
}
@@ -577,11 +609,11 @@
if (scr_readw(r) != vc->vc_video_erase_char)
break;
if (r != q && new_rows >= rows + logo_lines) {
- save = kmalloc(array3_size(logo_lines, new_cols, 2),
+ save = kzalloc(array3_size(logo_lines, new_cols, 2),
GFP_KERNEL);
if (save) {
int i = cols < new_cols ? cols : new_cols;
- scr_memsetw(save, erase, logo_lines * new_cols * 2);
+ scr_memsetw(save, erase, array3_size(logo_lines, new_cols, 2));
r = q - step;
for (cnt = 0; cnt < logo_lines; cnt++, r += i)
scr_memcpyw(save + cnt * new_cols, r, 2 * i);
@@ -597,11 +629,11 @@
}
if (!save) {
int lines;
- if (vc->vc_y + logo_lines >= rows)
- lines = rows - vc->vc_y - 1;
+ if (vc->state.y + logo_lines >= rows)
+ lines = rows - vc->state.y - 1;
else
lines = logo_lines;
- vc->vc_y += lines;
+ vc->state.y += lines;
vc->vc_pos += lines * vc->vc_size_row;
}
}
@@ -618,17 +650,20 @@
q = (unsigned short *) (vc->vc_origin +
vc->vc_size_row *
rows);
- scr_memcpyw(q, save, logo_lines * new_cols * 2);
- vc->vc_y += logo_lines;
+ scr_memcpyw(q, save, array3_size(logo_lines, new_cols, 2));
+ vc->state.y += logo_lines;
vc->vc_pos += logo_lines * vc->vc_size_row;
kfree(save);
}
+
+ if (logo_shown == FBCON_LOGO_DONTSHOW)
+ return;
if (logo_lines > vc->vc_bottom) {
logo_shown = FBCON_LOGO_CANSHOW;
printk(KERN_INFO
"fbcon_init: disable boot-logo (boot-logo bigger than screen).\n");
- } else if (logo_shown != FBCON_LOGO_DONTSHOW) {
+ } else {
logo_shown = FBCON_LOGO_DRAW;
vc->vc_top = logo_lines;
}
@@ -812,7 +847,7 @@
int oldidx = con2fb_map[unit];
struct fb_info *info = registered_fb[newidx];
struct fb_info *oldinfo = NULL;
- int found, err = 0;
+ int found, err = 0;
WARN_CONSOLE_UNLOCKED();
@@ -834,38 +869,37 @@
con2fb_map[unit] = newidx;
if (!err && !found)
- err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
-
+ err = con2fb_acquire_newinfo(vc, info, unit, oldidx);
/*
* If old fb is not mapped to any of the consoles,
* fbcon should release it.
*/
- if (!err && oldinfo && !search_fb_in_map(oldidx))
- err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
- found);
+ if (!err && oldinfo && !search_fb_in_map(oldidx))
+ err = con2fb_release_oldinfo(vc, oldinfo, info, unit, oldidx,
+ found);
- if (!err) {
- int show_logo = (fg_console == 0 && !user &&
- logo_shown != FBCON_LOGO_DONTSHOW);
+ if (!err) {
+ int show_logo = (fg_console == 0 && !user &&
+ logo_shown != FBCON_LOGO_DONTSHOW);
- if (!found)
- fbcon_add_cursor_timer(info);
- con2fb_map_boot[unit] = newidx;
- con2fb_init_display(vc, info, unit, show_logo);
+ if (!found)
+ fbcon_add_cursor_timer(info);
+ con2fb_map_boot[unit] = newidx;
+ con2fb_init_display(vc, info, unit, show_logo);
}
if (!search_fb_in_map(info_idx))
info_idx = newidx;
- return err;
+ return err;
}
/*
* Low Level Operations
*/
/* NOTE: fbcon cannot be __init: it may be called from do_take_over_console later */
-static int var_to_display(struct display *disp,
+static int var_to_display(struct fbcon_display *disp,
struct fb_var_screeninfo *var,
struct fb_info *info)
{
@@ -890,7 +924,7 @@
}
static void display_to_var(struct fb_var_screeninfo *var,
- struct display *disp)
+ struct fbcon_display *disp)
{
fb_videomode_to_var(var, disp->mode);
var->xres_virtual = disp->xres_virtual;
@@ -911,7 +945,7 @@
static const char *fbcon_startup(void)
{
const char *display_desc = "frame buffer device";
- struct display *p = &fb_display[fg_console];
+ struct fbcon_display *p = &fb_display[fg_console];
struct vc_data *vc = vc_cons[fg_console].d;
const struct font_desc *font = NULL;
struct module *owner;
@@ -990,24 +1024,30 @@
info->var.bits_per_pixel);
fbcon_add_cursor_timer(info);
- fbcon_has_exited = 0;
return display_desc;
}
static void fbcon_init(struct vc_data *vc, int init)
{
- struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
+ struct fb_info *info;
struct fbcon_ops *ops;
struct vc_data **default_mode = vc->vc_display_fg;
struct vc_data *svc = *default_mode;
- struct display *t, *p = &fb_display[vc->vc_num];
+ struct fbcon_display *t, *p = &fb_display[vc->vc_num];
int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256;
int cap, ret;
- if (info_idx == -1 || info == NULL)
+ if (WARN_ON(info_idx == -1))
return;
+ if (con2fb_map[vc->vc_num] == -1)
+ con2fb_map[vc->vc_num] = info_idx;
+
+ info = registered_fb[con2fb_map[vc->vc_num]];
cap = info->flags;
+
+ if (logo_shown < 0 && console_loglevel <= CONSOLE_LOGLEVEL_QUIET)
+ logo_shown = FBCON_LOGO_DONTSHOW;
if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW ||
(info->fix.type == FB_TYPE_TEXT))
@@ -1053,7 +1093,6 @@
if (p->userfont)
charcnt = FNTCHARCNT(p->fontdata);
- vc->vc_panic_force_write = !!(info->flags & FBINFO_CAN_FORCE_OUTPUT);
vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
if (charcnt == 256) {
@@ -1110,11 +1149,13 @@
ops->graphics = 0;
+#ifdef CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION
if ((cap & FBINFO_HWACCEL_COPYAREA) &&
!(cap & FBINFO_HWACCEL_DISABLED))
p->scrollmode = SCROLL_MOVE;
else /* default to something safe */
p->scrollmode = SCROLL_REDRAW;
+#endif
/*
* ++guenther: console.c:vc_allocate() relies on initializing
@@ -1138,7 +1179,7 @@
ops->p = &fb_display[fg_console];
}
-static void fbcon_free_font(struct display *p, bool freefont)
+static void fbcon_free_font(struct fbcon_display *p, bool freefont)
{
if (freefont && p->userfont && p->fontdata && (--REFCOUNT(p->fontdata) == 0))
kfree(p->fontdata - FONT_EXTRA_WORDS * sizeof(int));
@@ -1150,7 +1191,7 @@
static void fbcon_deinit(struct vc_data *vc)
{
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
struct fb_info *info;
struct fbcon_ops *ops;
int idx;
@@ -1226,7 +1267,7 @@
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
u_int y_break;
if (fbcon_is_inactive(vc, info))
@@ -1262,7 +1303,7 @@
int count, int ypos, int xpos)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
struct fbcon_ops *ops = info->fbcon_par;
if (!fbcon_is_inactive(vc, info))
@@ -1299,7 +1340,7 @@
if (fbcon_is_inactive(vc, info) || vc->vc_deccm != 1)
return;
- if (vc->vc_cursor_type & 0x10)
+ if (vc->vc_cursor_type & CUR_SW)
fbcon_del_cursor_timer(info);
else
fbcon_add_cursor_timer(info);
@@ -1320,7 +1361,7 @@
static void fbcon_set_disp(struct fb_info *info, struct fb_var_screeninfo *var,
int unit)
{
- struct display *p, *t;
+ struct fbcon_display *p, *t;
struct vc_data **default_mode, *vc;
struct vc_data *svc;
struct fbcon_ops *ops = info->fbcon_par;
@@ -1387,7 +1428,7 @@
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
p->yscroll += count;
if (p->yscroll >= p->vrows) /* Deal with wrap */
@@ -1406,7 +1447,7 @@
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
p->yscroll -= count;
if (p->yscroll < 0) /* Deal with wrap */
@@ -1424,7 +1465,7 @@
static __inline__ void ypan_up(struct vc_data *vc, int count)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
struct fbcon_ops *ops = info->fbcon_par;
p->yscroll += count;
@@ -1449,7 +1490,7 @@
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
p->yscroll += count;
@@ -1472,7 +1513,7 @@
static __inline__ void ypan_down(struct vc_data *vc, int count)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
struct fbcon_ops *ops = info->fbcon_par;
p->yscroll -= count;
@@ -1497,7 +1538,7 @@
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
p->yscroll -= count;
@@ -1517,7 +1558,7 @@
scrollback_current = 0;
}
-static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
+static void fbcon_redraw_move(struct vc_data *vc, struct fbcon_display *p,
int line, int count, int dy)
{
unsigned short *s = (unsigned short *)
@@ -1552,7 +1593,7 @@
}
static void fbcon_redraw_blit(struct vc_data *vc, struct fb_info *info,
- struct display *p, int line, int count, int ycount)
+ struct fbcon_display *p, int line, int count, int ycount)
{
int offset = ycount * vc->vc_cols;
unsigned short *d = (unsigned short *)
@@ -1601,7 +1642,7 @@
}
}
-static void fbcon_redraw(struct vc_data *vc, struct display *p,
+static void fbcon_redraw(struct vc_data *vc, struct fbcon_display *p,
int line, int count, int offset)
{
unsigned short *d = (unsigned short *)
@@ -1660,7 +1701,7 @@
enum con_scroll dir, unsigned int count)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
int scroll_partial = info->flags & FBINFO_PARTIAL_PAN_OK;
if (fbcon_is_inactive(vc, info))
@@ -1678,9 +1719,7 @@
case SM_UP:
if (count > vc->vc_rows) /* Maximum realistic size */
count = vc->vc_rows;
- if (logo_shown >= 0)
- goto redraw_up;
- switch (p->scrollmode) {
+ switch (fb_scrollmode(p)) {
case SCROLL_MOVE:
fbcon_redraw_blit(vc, info, p, t, b - t - count,
count);
@@ -1691,7 +1730,6 @@
vc->vc_video_erase_char,
vc->vc_size_row * count);
return true;
- break;
case SCROLL_WRAP_MOVE:
if (b - t - count > 3 * vc->vc_rows >> 2) {
@@ -1769,9 +1807,7 @@
case SM_DOWN:
if (count > vc->vc_rows) /* Maximum realistic size */
count = vc->vc_rows;
- if (logo_shown >= 0)
- goto redraw_down;
- switch (p->scrollmode) {
+ switch (fb_scrollmode(p)) {
case SCROLL_MOVE:
fbcon_redraw_blit(vc, info, p, b - 1, b - t - count,
-count);
@@ -1782,7 +1818,6 @@
vc->vc_video_erase_char,
vc->vc_size_row * count);
return true;
- break;
case SCROLL_WRAP_MOVE:
if (b - t - count > 3 * vc->vc_rows >> 2) {
@@ -1862,7 +1897,7 @@
int height, int width)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
if (fbcon_is_inactive(vc, info))
return;
@@ -1881,7 +1916,7 @@
p->vrows - p->yscroll);
}
-static void fbcon_bmove_rec(struct vc_data *vc, struct display *p, int sy, int sx,
+static void fbcon_bmove_rec(struct vc_data *vc, struct fbcon_display *p, int sy, int sx,
int dy, int dx, int height, int width, u_int y_break)
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
@@ -1923,12 +1958,12 @@
height, width);
}
-static void updatescrollmode(struct display *p,
+static void updatescrollmode_accel(struct fbcon_display *p,
struct fb_info *info,
struct vc_data *vc)
{
+#ifdef CONFIG_FRAMEBUFFER_CONSOLE_LEGACY_ACCELERATION
struct fbcon_ops *ops = info->fbcon_par;
- int fh = vc->vc_font.height;
int cap = info->flags;
u16 t = 0;
int ypan = FBCON_SWAP(ops->rotate, info->fix.ypanstep,
@@ -1949,12 +1984,6 @@
int fast_imageblit = (cap & FBINFO_HWACCEL_IMAGEBLIT) &&
!(cap & FBINFO_HWACCEL_DISABLED);
- p->vrows = vyres/fh;
- if (yres > (fh * (vc->vc_rows + 1)))
- p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
- if ((yres % fh) && (vyres % fh < yres % fh))
- p->vrows--;
-
if (good_wrap || good_pan) {
if (reading_fast || fast_copyarea)
p->scrollmode = good_wrap ?
@@ -1968,6 +1997,27 @@
else
p->scrollmode = SCROLL_REDRAW;
}
+#endif
+}
+
+static void updatescrollmode(struct fbcon_display *p,
+ struct fb_info *info,
+ struct vc_data *vc)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ int fh = vc->vc_font.height;
+ int yres = FBCON_SWAP(ops->rotate, info->var.yres, info->var.xres);
+ int vyres = FBCON_SWAP(ops->rotate, info->var.yres_virtual,
+ info->var.xres_virtual);
+
+ p->vrows = vyres/fh;
+ if (yres > (fh * (vc->vc_rows + 1)))
+ p->vrows -= (yres - (fh * vc->vc_rows)) / fh;
+ if ((yres % fh) && (vyres % fh < yres % fh))
+ p->vrows--;
+
+ /* update scrollmode in case hardware acceleration is used */
+ updatescrollmode_accel(p, info, vc);
}
#define PITCH(w) (((w) + 7) >> 3)
@@ -1978,7 +2028,7 @@
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
struct fb_var_screeninfo var = info->var;
int x_diff, y_diff, virt_w, virt_h, virt_fw, virt_fh;
@@ -2041,7 +2091,7 @@
{
struct fb_info *info, *old_info = NULL;
struct fbcon_ops *ops;
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
struct fb_var_screeninfo var;
int i, ret, prev_console, charcnt = 256;
@@ -2128,7 +2178,7 @@
updatescrollmode(p, info, vc);
- switch (p->scrollmode) {
+ switch (fb_scrollmode(p)) {
case SCROLL_WRAP_MOVE:
scrollback_phys_max = p->vrows - vc->vc_rows;
break;
@@ -2171,8 +2221,6 @@
static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
int blank)
{
- struct fb_event event;
-
if (blank) {
unsigned short charmask = vc->vc_hi_font_mask ?
0x1ff : 0xff;
@@ -2183,14 +2231,6 @@
fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
vc->vc_video_erase_char = oldc;
}
-
-
- if (!lock_fb_info(info))
- return;
- event.info = info;
- event.data = ␣
- fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
- unlock_fb_info(info);
}
static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
@@ -2204,7 +2244,8 @@
ops->graphics = 1;
if (!blank) {
- var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE;
+ var.activate = FB_ACTIVATE_NOW | FB_ACTIVATE_FORCE |
+ FB_ACTIVATE_KD_TEXT;
fb_set_var(info, &var);
ops->graphics = 0;
ops->var = info->var;
@@ -2217,9 +2258,8 @@
fbcon_cursor(vc, blank ? CM_ERASE : CM_DRAW);
ops->cursor_flash = (!blank);
- if (!(info->flags & FBINFO_MISC_USEREVENT))
- if (fb_blank(info, blank))
- fbcon_generic_blank(vc, info, blank);
+ if (fb_blank(info, blank))
+ fbcon_generic_blank(vc, info, blank);
}
if (!blank)
@@ -2388,7 +2428,7 @@
{
struct fb_info *info = registered_fb[con2fb_map[vc->vc_num]];
struct fbcon_ops *ops = info->fbcon_par;
- struct display *p = &fb_display[vc->vc_num];
+ struct fbcon_display *p = &fb_display[vc->vc_num];
int resize;
int cnt;
char *old_data = NULL;
@@ -2431,7 +2471,7 @@
static int fbcon_copy_font(struct vc_data *vc, int con)
{
- struct display *od = &fb_display[con];
+ struct fbcon_display *od = &fb_display[con];
struct console_font *f = &vc->vc_font;
if (od->fontdata == f->data)
@@ -2468,9 +2508,17 @@
if (charcount != 256 && charcount != 512)
return -EINVAL;
+ /* font bigger than screen resolution ? */
+ if (w > FBCON_SWAP(info->var.rotate, info->var.xres, info->var.yres) ||
+ h > FBCON_SWAP(info->var.rotate, info->var.yres, info->var.xres))
+ return -EINVAL;
+
+ if (font->width > 32 || font->height > 32)
+ return -EINVAL;
+
/* Make sure drawing engine can handle the font */
- if (!(info->pixmap.blit_x & (1 << (font->width - 1))) ||
- !(info->pixmap.blit_y & (1 << (font->height - 1))))
+ if (!(info->pixmap.blit_x & BIT(font->width - 1)) ||
+ !(info->pixmap.blit_y & BIT(font->height - 1)))
return -EINVAL;
/* Make sure driver can handle the font length */
@@ -2574,7 +2622,7 @@
fb_set_cmap(&palette_cmap, info);
}
-static u16 *fbcon_screen_pos(struct vc_data *vc, int offset)
+static u16 *fbcon_screen_pos(const struct vc_data *vc, int offset)
{
return (u16 *) (vc->vc_origin + offset);
}
@@ -2621,12 +2669,7 @@
}
}
-static int fbcon_set_origin(struct vc_data *vc)
-{
- return 0;
-}
-
-static void fbcon_suspended(struct fb_info *info)
+void fbcon_suspended(struct fb_info *info)
{
struct vc_data *vc = NULL;
struct fbcon_ops *ops = info->fbcon_par;
@@ -2639,7 +2682,7 @@
fbcon_cursor(vc, CM_ERASE);
}
-static void fbcon_resumed(struct fb_info *info)
+void fbcon_resumed(struct fb_info *info)
{
struct vc_data *vc;
struct fbcon_ops *ops = info->fbcon_par;
@@ -2655,7 +2698,7 @@
{
struct fbcon_ops *ops = info->fbcon_par;
struct vc_data *vc;
- struct display *p;
+ struct fbcon_display *p;
int rows, cols;
if (!ops || ops->currcon < 0)
@@ -2693,7 +2736,7 @@
{
struct fbcon_ops *ops = info->fbcon_par;
struct vc_data *vc;
- struct display *p;
+ struct fbcon_display *p;
int i, rows, cols, fg = -1;
if (!ops || ops->currcon < 0)
@@ -2724,11 +2767,49 @@
fbcon_modechanged(info);
}
-static int fbcon_mode_deleted(struct fb_info *info,
- struct fb_videomode *mode)
+
+void fbcon_update_vcs(struct fb_info *info, bool all)
+{
+ if (all)
+ fbcon_set_all_vcs(info);
+ else
+ fbcon_modechanged(info);
+}
+EXPORT_SYMBOL(fbcon_update_vcs);
+
+/* let fbcon check if it supports a new screen resolution */
+int fbcon_modechange_possible(struct fb_info *info, struct fb_var_screeninfo *var)
+{
+ struct fbcon_ops *ops = info->fbcon_par;
+ struct vc_data *vc;
+ unsigned int i;
+
+ WARN_CONSOLE_UNLOCKED();
+
+ if (!ops)
+ return 0;
+
+ /* prevent setting a screen size which is smaller than font size */
+ for (i = first_fb_vc; i <= last_fb_vc; i++) {
+ vc = vc_cons[i].d;
+ if (!vc || vc->vc_mode != KD_TEXT ||
+ registered_fb[con2fb_map[i]] != info)
+ continue;
+
+ if (vc->vc_font.width > FBCON_SWAP(var->rotate, var->xres, var->yres) ||
+ vc->vc_font.height > FBCON_SWAP(var->rotate, var->yres, var->xres))
+ return -EINVAL;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(fbcon_modechange_possible);
+
+int fbcon_mode_deleted(struct fb_info *info,
+ struct fb_videomode *mode)
{
struct fb_info *fb_info;
- struct display *p;
+ struct fbcon_display *p;
int i, j, found = 0;
/* before deletion, ensure that mode is not in use */
@@ -2751,7 +2832,7 @@
}
#ifdef CONFIG_VT_HW_CONSOLE_BINDING
-static int fbcon_unbind(void)
+static void fbcon_unbind(void)
{
int ret;
@@ -2760,25 +2841,21 @@
if (!ret)
fbcon_has_console_bind = 0;
-
- return ret;
}
#else
-static inline int fbcon_unbind(void)
-{
- return -EINVAL;
-}
+static inline void fbcon_unbind(void) {}
#endif /* CONFIG_VT_HW_CONSOLE_BINDING */
/* called with console_lock held */
-static int fbcon_fb_unbind(int idx)
+void fbcon_fb_unbind(struct fb_info *info)
{
int i, new_idx = -1, ret = 0;
+ int idx = info->node;
WARN_CONSOLE_UNLOCKED();
if (!fbcon_has_console_bind)
- return 0;
+ return;
for (i = first_fb_vc; i <= last_fb_vc; i++) {
if (con2fb_map[i] != idx &&
@@ -2811,26 +2888,24 @@
idx, 0);
if (ret) {
con2fb_map[i] = idx;
- return ret;
+ return;
}
}
}
}
- ret = fbcon_unbind();
+ fbcon_unbind();
}
-
- return ret;
}
/* called with console_lock held */
-static int fbcon_fb_unregistered(struct fb_info *info)
+void fbcon_fb_unregistered(struct fb_info *info)
{
int i, idx;
WARN_CONSOLE_UNLOCKED();
if (deferred_takeover)
- return 0;
+ return;
idx = info->node;
for (i = first_fb_vc; i <= last_fb_vc; i++) {
@@ -2859,21 +2934,18 @@
if (!num_registered_fb)
do_unregister_con_driver(&fb_con);
-
- return 0;
}
-/* called with console_lock held */
-static void fbcon_remap_all(int idx)
+void fbcon_remap_all(struct fb_info *info)
{
- int i;
+ int i, idx = info->node;
- WARN_CONSOLE_UNLOCKED();
-
+ console_lock();
if (deferred_takeover) {
for (i = first_fb_vc; i <= last_fb_vc; i++)
con2fb_map_boot[i] = idx;
fbcon_map_override();
+ console_unlock();
return;
}
@@ -2886,6 +2958,7 @@
first_fb_vc + 1, last_fb_vc + 1);
info_idx = idx;
}
+ console_unlock();
}
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY
@@ -2919,7 +2992,7 @@
#endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */
/* called with console_lock held */
-static int fbcon_fb_registered(struct fb_info *info)
+int fbcon_fb_registered(struct fb_info *info)
{
int ret = 0, i, idx;
@@ -2953,7 +3026,7 @@
return ret;
}
-static void fbcon_fb_blanked(struct fb_info *info, int blank)
+void fbcon_fb_blanked(struct fb_info *info, int blank)
{
struct fbcon_ops *ops = info->fbcon_par;
struct vc_data *vc;
@@ -2975,7 +3048,7 @@
ops->blank_state = blank;
}
-static void fbcon_new_modelist(struct fb_info *info)
+void fbcon_new_modelist(struct fb_info *info)
{
int i;
struct vc_data *vc;
@@ -2996,11 +3069,11 @@
}
}
-static void fbcon_get_requirement(struct fb_info *info,
- struct fb_blit_caps *caps)
+void fbcon_get_requirement(struct fb_info *info,
+ struct fb_blit_caps *caps)
{
struct vc_data *vc;
- struct display *p;
+ struct fbcon_display *p;
if (caps->flags) {
int i, charcnt;
@@ -3032,78 +3105,45 @@
}
}
-static int fbcon_event_notify(struct notifier_block *self,
- unsigned long action, void *data)
+int fbcon_set_con2fb_map_ioctl(void __user *argp)
{
- struct fb_event *event = data;
- struct fb_info *info = event->info;
- struct fb_videomode *mode;
- struct fb_con2fbmap *con2fb;
- struct fb_blit_caps *caps;
- int idx, ret = 0;
+ struct fb_con2fbmap con2fb;
+ int ret;
- /*
- * ignore all events except driver registration and deregistration
- * if fbcon is not active
- */
- if (fbcon_has_exited && !(action == FB_EVENT_FB_REGISTERED ||
- action == FB_EVENT_FB_UNREGISTERED))
- goto done;
-
- switch(action) {
- case FB_EVENT_SUSPEND:
- fbcon_suspended(info);
- break;
- case FB_EVENT_RESUME:
- fbcon_resumed(info);
- break;
- case FB_EVENT_MODE_CHANGE:
- fbcon_modechanged(info);
- break;
- case FB_EVENT_MODE_CHANGE_ALL:
- fbcon_set_all_vcs(info);
- break;
- case FB_EVENT_MODE_DELETE:
- mode = event->data;
- ret = fbcon_mode_deleted(info, mode);
- break;
- case FB_EVENT_FB_UNBIND:
- idx = info->node;
- ret = fbcon_fb_unbind(idx);
- break;
- case FB_EVENT_FB_REGISTERED:
- ret = fbcon_fb_registered(info);
- break;
- case FB_EVENT_FB_UNREGISTERED:
- ret = fbcon_fb_unregistered(info);
- break;
- case FB_EVENT_SET_CONSOLE_MAP:
- /* called with console lock held */
- con2fb = event->data;
- ret = set_con2fb_map(con2fb->console - 1,
- con2fb->framebuffer, 1);
- break;
- case FB_EVENT_GET_CONSOLE_MAP:
- con2fb = event->data;
- con2fb->framebuffer = con2fb_map[con2fb->console - 1];
- break;
- case FB_EVENT_BLANK:
- fbcon_fb_blanked(info, *(int *)event->data);
- break;
- case FB_EVENT_NEW_MODELIST:
- fbcon_new_modelist(info);
- break;
- case FB_EVENT_GET_REQ:
- caps = event->data;
- fbcon_get_requirement(info, caps);
- break;
- case FB_EVENT_REMAP_ALL_CONSOLE:
- idx = info->node;
- fbcon_remap_all(idx);
- break;
+ if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
+ return -EFAULT;
+ if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
+ return -EINVAL;
+ if (con2fb.framebuffer >= FB_MAX)
+ return -EINVAL;
+ if (!registered_fb[con2fb.framebuffer])
+ request_module("fb%d", con2fb.framebuffer);
+ if (!registered_fb[con2fb.framebuffer]) {
+ return -EINVAL;
}
-done:
+
+ console_lock();
+ ret = set_con2fb_map(con2fb.console - 1,
+ con2fb.framebuffer, 1);
+ console_unlock();
+
return ret;
+}
+
+int fbcon_get_con2fb_map_ioctl(void __user *argp)
+{
+ struct fb_con2fbmap con2fb;
+
+ if (copy_from_user(&con2fb, argp, sizeof(con2fb)))
+ return -EFAULT;
+ if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
+ return -EINVAL;
+
+ console_lock();
+ con2fb.framebuffer = con2fb_map[con2fb.console - 1];
+ console_unlock();
+
+ return copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0;
}
/*
@@ -3127,17 +3167,12 @@
.con_font_default = fbcon_set_def_font,
.con_font_copy = fbcon_copy_font,
.con_set_palette = fbcon_set_palette,
- .con_set_origin = fbcon_set_origin,
.con_invert_region = fbcon_invert_region,
.con_screen_pos = fbcon_screen_pos,
.con_getxy = fbcon_getxy,
.con_resize = fbcon_resize,
.con_debug_enter = fbcon_debug_enter,
.con_debug_leave = fbcon_debug_leave,
-};
-
-static struct notifier_block fbcon_event_notifier = {
- .notifier_call = fbcon_event_notify,
};
static ssize_t store_rotate(struct device *device,
@@ -3147,9 +3182,6 @@
struct fb_info *info;
int rotate, idx;
char **last = NULL;
-
- if (fbcon_has_exited)
- return count;
console_lock();
idx = con2fb_map[fg_console];
@@ -3173,9 +3205,6 @@
int rotate, idx;
char **last = NULL;
- if (fbcon_has_exited)
- return count;
-
console_lock();
idx = con2fb_map[fg_console];
@@ -3196,9 +3225,6 @@
struct fb_info *info;
int rotate = 0, idx;
- if (fbcon_has_exited)
- return 0;
-
console_lock();
idx = con2fb_map[fg_console];
@@ -3218,9 +3244,6 @@
struct fb_info *info;
struct fbcon_ops *ops;
int idx, blink = -1;
-
- if (fbcon_has_exited)
- return 0;
console_lock();
idx = con2fb_map[fg_console];
@@ -3247,9 +3270,6 @@
struct fb_info *info;
int blink, idx;
char **last = NULL;
-
- if (fbcon_has_exited)
- return count;
console_lock();
idx = con2fb_map[fg_console];
@@ -3314,6 +3334,9 @@
console_lock();
+ deferred_takeover = false;
+ logo_shown = FBCON_LOGO_DONTSHOW;
+
for_each_registered_fb(i)
fbcon_fb_registered(registered_fb[i]);
@@ -3331,8 +3354,6 @@
pr_info("fbcon: Taking over console\n");
dummycon_unregister_output_notifier(&fbcon_output_nb);
- deferred_takeover = false;
- logo_shown = FBCON_LOGO_DONTSHOW;
/* We may get called in atomic context */
schedule_work(&fbcon_deferred_takeover_work);
@@ -3373,9 +3394,6 @@
struct fb_info *info;
int i, j, mapped;
- if (fbcon_has_exited)
- return;
-
#ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
if (deferred_takeover) {
dummycon_unregister_output_notifier(&fbcon_output_nb);
@@ -3397,7 +3415,7 @@
for (j = first_fb_vc; j <= last_fb_vc; j++) {
if (con2fb_map[j] == i) {
mapped = 1;
- break;
+ con2fb_map[j] = -1;
}
}
@@ -3420,8 +3438,6 @@
info->queue.func = NULL;
}
}
-
- fbcon_has_exited = 1;
}
void __init fb_console_init(void)
@@ -3429,7 +3445,6 @@
int i;
console_lock();
- fb_register_client(&fbcon_event_notifier);
fbcon_device = device_create(fb_class, NULL, MKDEV(0, 0), NULL,
"fbcon");
@@ -3465,7 +3480,6 @@
void __exit fb_console_exit(void)
{
console_lock();
- fb_unregister_client(&fbcon_event_notifier);
fbcon_deinit_device();
device_destroy(fb_class, MKDEV(0, 0));
fbcon_exit();
--
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