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![Tejun Heo](/assets/img/avatar_default.png)
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
510 lines
12 KiB
C
510 lines
12 KiB
C
/*
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* linux/drivers/video/pmag-aa-fb.c
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* Copyright 2002 Karsten Merker <merker@debian.org>
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*
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* PMAG-AA TurboChannel framebuffer card support ... derived from
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* pmag-ba-fb.c, which is Copyright (C) 1999, 2000, 2001 by
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* Michael Engel <engel@unix-ag.org>, Karsten Merker <merker@debian.org>
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* and Harald Koerfgen <hkoerfg@web.de>, which itself is derived from
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* "HP300 Topcat framebuffer support (derived from macfb of all things)
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* Phil Blundell <philb@gnu.org> 1998"
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*
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* 2002-09-28 Karsten Merker <merker@linuxtag.org>
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* Version 0.01: First try to get a PMAG-AA running.
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*
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* 2003-02-24 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
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* Version 0.02: Major code cleanup.
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*
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* 2003-09-21 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
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* Hardware cursor support.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/mm.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/fb.h>
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#include <linux/console.h>
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#include <asm/bootinfo.h>
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#include <asm/dec/machtype.h>
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#include <asm/dec/tc.h>
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#include <video/fbcon.h>
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#include <video/fbcon-cfb8.h>
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#include "bt455.h"
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#include "bt431.h"
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/* Version information */
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#define DRIVER_VERSION "0.02"
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#define DRIVER_AUTHOR "Karsten Merker <merker@linuxtag.org>"
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#define DRIVER_DESCRIPTION "PMAG-AA Framebuffer Driver"
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/* Prototypes */
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static int aafb_set_var(struct fb_var_screeninfo *var, int con,
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struct fb_info *info);
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/*
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* Bt455 RAM DAC register base offset (rel. to TC slot base address).
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*/
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#define PMAG_AA_BT455_OFFSET 0x100000
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/*
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* Bt431 cursor generator offset (rel. to TC slot base address).
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*/
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#define PMAG_AA_BT431_OFFSET 0x180000
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/*
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* Begin of PMAG-AA framebuffer memory relative to TC slot address,
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* resolution is 1280x1024x1 (8 bits deep, but only LSB is used).
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*/
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#define PMAG_AA_ONBOARD_FBMEM_OFFSET 0x200000
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struct aafb_cursor {
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struct timer_list timer;
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int enable;
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int on;
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int vbl_cnt;
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int blink_rate;
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u16 x, y, width, height;
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};
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#define CURSOR_TIMER_FREQ (HZ / 50)
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#define CURSOR_BLINK_RATE (20)
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#define CURSOR_DRAW_DELAY (2)
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struct aafb_info {
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struct fb_info info;
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struct display disp;
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struct aafb_cursor cursor;
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struct bt455_regs *bt455;
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struct bt431_regs *bt431;
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unsigned long fb_start;
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unsigned long fb_size;
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unsigned long fb_line_length;
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};
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/*
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* Max 3 TURBOchannel slots -> max 3 PMAG-AA.
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*/
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static struct aafb_info my_fb_info[3];
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static struct aafb_par {
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} current_par;
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static int currcon = -1;
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static void aafb_set_cursor(struct aafb_info *info, int on)
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{
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struct aafb_cursor *c = &info->cursor;
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if (on) {
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bt431_position_cursor(info->bt431, c->x, c->y);
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bt431_enable_cursor(info->bt431);
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} else
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bt431_erase_cursor(info->bt431);
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}
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static void aafbcon_cursor(struct display *disp, int mode, int x, int y)
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{
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struct aafb_info *info = (struct aafb_info *)disp->fb_info;
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struct aafb_cursor *c = &info->cursor;
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x *= fontwidth(disp);
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y *= fontheight(disp);
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if (c->x == x && c->y == y && (mode == CM_ERASE) == !c->enable)
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return;
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c->enable = 0;
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if (c->on)
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aafb_set_cursor(info, 0);
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c->x = x - disp->var.xoffset;
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c->y = y - disp->var.yoffset;
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switch (mode) {
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case CM_ERASE:
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c->on = 0;
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break;
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case CM_DRAW:
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case CM_MOVE:
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if (c->on)
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aafb_set_cursor(info, c->on);
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else
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c->vbl_cnt = CURSOR_DRAW_DELAY;
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c->enable = 1;
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break;
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}
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}
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static int aafbcon_set_font(struct display *disp, int width, int height)
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{
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struct aafb_info *info = (struct aafb_info *)disp->fb_info;
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struct aafb_cursor *c = &info->cursor;
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u8 fgc = ~attr_bgcol_ec(disp, disp->conp, &info->info);
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if (width > 64 || height > 64 || width < 0 || height < 0)
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return -EINVAL;
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c->height = height;
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c->width = width;
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bt431_set_font(info->bt431, fgc, width, height);
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return 1;
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}
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static void aafb_cursor_timer_handler(unsigned long data)
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{
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struct aafb_info *info = (struct aafb_info *)data;
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struct aafb_cursor *c = &info->cursor;
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if (!c->enable)
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goto out;
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if (c->vbl_cnt && --c->vbl_cnt == 0) {
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c->on ^= 1;
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aafb_set_cursor(info, c->on);
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c->vbl_cnt = c->blink_rate;
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}
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out:
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c->timer.expires = jiffies + CURSOR_TIMER_FREQ;
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add_timer(&c->timer);
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}
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static void __init aafb_cursor_init(struct aafb_info *info)
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{
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struct aafb_cursor *c = &info->cursor;
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c->enable = 1;
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c->on = 1;
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c->x = c->y = 0;
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c->width = c->height = 0;
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c->vbl_cnt = CURSOR_DRAW_DELAY;
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c->blink_rate = CURSOR_BLINK_RATE;
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init_timer(&c->timer);
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c->timer.data = (unsigned long)info;
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c->timer.function = aafb_cursor_timer_handler;
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mod_timer(&c->timer, jiffies + CURSOR_TIMER_FREQ);
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}
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static void __exit aafb_cursor_exit(struct aafb_info *info)
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{
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struct aafb_cursor *c = &info->cursor;
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del_timer_sync(&c->timer);
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}
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static struct display_switch aafb_switch8 = {
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.setup = fbcon_cfb8_setup,
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.bmove = fbcon_cfb8_bmove,
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.clear = fbcon_cfb8_clear,
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.putc = fbcon_cfb8_putc,
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.putcs = fbcon_cfb8_putcs,
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.revc = fbcon_cfb8_revc,
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.cursor = aafbcon_cursor,
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.set_font = aafbcon_set_font,
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.clear_margins = fbcon_cfb8_clear_margins,
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.fontwidthmask = FONTWIDTH(4)|FONTWIDTH(8)|FONTWIDTH(12)|FONTWIDTH(16)
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};
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static void aafb_get_par(struct aafb_par *par)
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{
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*par = current_par;
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}
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static int aafb_get_fix(struct fb_fix_screeninfo *fix, int con,
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struct fb_info *info)
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{
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struct aafb_info *ip = (struct aafb_info *)info;
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memset(fix, 0, sizeof(struct fb_fix_screeninfo));
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strcpy(fix->id, "PMAG-AA");
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fix->smem_start = ip->fb_start;
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fix->smem_len = ip->fb_size;
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fix->type = FB_TYPE_PACKED_PIXELS;
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fix->ypanstep = 1;
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fix->ywrapstep = 1;
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fix->visual = FB_VISUAL_MONO10;
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fix->line_length = 1280;
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fix->accel = FB_ACCEL_NONE;
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return 0;
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}
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static void aafb_set_disp(struct display *disp, int con,
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struct aafb_info *info)
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{
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struct fb_fix_screeninfo fix;
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disp->fb_info = &info->info;
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aafb_set_var(&disp->var, con, &info->info);
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if (disp->conp && disp->conp->vc_sw && disp->conp->vc_sw->con_cursor)
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disp->conp->vc_sw->con_cursor(disp->conp, CM_ERASE);
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disp->dispsw = &aafb_switch8;
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disp->dispsw_data = 0;
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aafb_get_fix(&fix, con, &info->info);
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disp->screen_base = (u8 *) fix.smem_start;
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disp->visual = fix.visual;
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disp->type = fix.type;
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disp->type_aux = fix.type_aux;
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disp->ypanstep = fix.ypanstep;
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disp->ywrapstep = fix.ywrapstep;
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disp->line_length = fix.line_length;
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disp->next_line = 2048;
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disp->can_soft_blank = 1;
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disp->inverse = 0;
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disp->scrollmode = SCROLL_YREDRAW;
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aafbcon_set_font(disp, fontwidth(disp), fontheight(disp));
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}
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static int aafb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
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struct fb_info *info)
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{
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static u16 color[2] = {0x0000, 0x000f};
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static struct fb_cmap aafb_cmap = {0, 2, color, color, color, NULL};
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fb_copy_cmap(&aafb_cmap, cmap, kspc ? 0 : 2);
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return 0;
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}
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static int aafb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
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struct fb_info *info)
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{
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u16 color[2] = {0x0000, 0x000f};
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if (cmap->start == 0
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&& cmap->len == 2
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&& memcmp(cmap->red, color, sizeof(color)) == 0
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&& memcmp(cmap->green, color, sizeof(color)) == 0
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&& memcmp(cmap->blue, color, sizeof(color)) == 0
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&& cmap->transp == NULL)
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return 0;
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else
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return -EINVAL;
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}
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static int aafb_ioctl(struct fb_info *info, u32 cmd, unsigned long arg)
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{
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/* TODO: Not yet implemented */
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return -ENOIOCTLCMD;
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}
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static int aafb_switch(int con, struct fb_info *info)
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{
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struct aafb_info *ip = (struct aafb_info *)info;
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struct display *old = (currcon < 0) ? &ip->disp : (fb_display + currcon);
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struct display *new = (con < 0) ? &ip->disp : (fb_display + con);
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if (old->conp && old->conp->vc_sw && old->conp->vc_sw->con_cursor)
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old->conp->vc_sw->con_cursor(old->conp, CM_ERASE);
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/* Set the current console. */
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currcon = con;
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aafb_set_disp(new, con, ip);
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return 0;
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}
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static void aafb_encode_var(struct fb_var_screeninfo *var,
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struct aafb_par *par)
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{
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var->xres = 1280;
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var->yres = 1024;
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var->xres_virtual = 2048;
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var->yres_virtual = 1024;
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var->xoffset = 0;
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var->yoffset = 0;
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var->bits_per_pixel = 8;
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var->grayscale = 1;
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var->red.offset = 0;
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var->red.length = 0;
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var->red.msb_right = 0;
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var->green.offset = 0;
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var->green.length = 1;
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var->green.msb_right = 0;
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var->blue.offset = 0;
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var->blue.length = 0;
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var->blue.msb_right = 0;
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var->transp.offset = 0;
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var->transp.length = 0;
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var->transp.msb_right = 0;
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var->nonstd = 0;
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var->activate &= ~FB_ACTIVATE_MASK & FB_ACTIVATE_NOW;
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var->accel_flags = 0;
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var->sync = FB_SYNC_ON_GREEN;
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var->vmode &= ~FB_VMODE_MASK & FB_VMODE_NONINTERLACED;
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}
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static int aafb_get_var(struct fb_var_screeninfo *var, int con,
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struct fb_info *info)
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{
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if (con < 0) {
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struct aafb_par par;
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memset(var, 0, sizeof(struct fb_var_screeninfo));
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aafb_get_par(&par);
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aafb_encode_var(var, &par);
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} else
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*var = info->var;
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return 0;
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}
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static int aafb_set_var(struct fb_var_screeninfo *var, int con,
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struct fb_info *info)
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{
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struct aafb_par par;
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aafb_get_par(&par);
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aafb_encode_var(var, &par);
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info->var = *var;
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return 0;
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}
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static int aafb_update_var(int con, struct fb_info *info)
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{
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struct aafb_info *ip = (struct aafb_info *)info;
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struct display *disp = (con < 0) ? &ip->disp : (fb_display + con);
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if (con == currcon)
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aafbcon_cursor(disp, CM_ERASE, ip->cursor.x, ip->cursor.y);
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return 0;
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}
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/* 0 unblanks, any other blanks. */
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static void aafb_blank(int blank, struct fb_info *info)
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{
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struct aafb_info *ip = (struct aafb_info *)info;
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u8 val = blank ? 0x00 : 0x0f;
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bt455_write_cmap_entry(ip->bt455, 1, val, val, val);
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aafbcon_cursor(&ip->disp, CM_ERASE, ip->cursor.x, ip->cursor.y);
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}
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static struct fb_ops aafb_ops = {
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.owner = THIS_MODULE,
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.fb_get_fix = aafb_get_fix,
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.fb_get_var = aafb_get_var,
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.fb_set_var = aafb_set_var,
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.fb_get_cmap = aafb_get_cmap,
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.fb_set_cmap = aafb_set_cmap,
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.fb_ioctl = aafb_ioctl
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};
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static int __init init_one(int slot)
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{
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unsigned long base_addr = CKSEG1ADDR(get_tc_base_addr(slot));
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struct aafb_info *ip = &my_fb_info[slot];
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memset(ip, 0, sizeof(struct aafb_info));
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/*
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* Framebuffer display memory base address and friends.
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*/
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ip->bt455 = (struct bt455_regs *) (base_addr + PMAG_AA_BT455_OFFSET);
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ip->bt431 = (struct bt431_regs *) (base_addr + PMAG_AA_BT431_OFFSET);
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ip->fb_start = base_addr + PMAG_AA_ONBOARD_FBMEM_OFFSET;
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ip->fb_size = 2048 * 1024; /* fb_fix_screeninfo.smem_length
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seems to be physical */
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ip->fb_line_length = 2048;
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/*
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* Let there be consoles..
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*/
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strcpy(ip->info.modename, "PMAG-AA");
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ip->info.node = -1;
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ip->info.flags = FBINFO_FLAG_DEFAULT;
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ip->info.fbops = &aafb_ops;
|
|
ip->info.disp = &ip->disp;
|
|
ip->info.changevar = NULL;
|
|
ip->info.switch_con = &aafb_switch;
|
|
ip->info.updatevar = &aafb_update_var;
|
|
ip->info.blank = &aafb_blank;
|
|
|
|
aafb_set_disp(&ip->disp, currcon, ip);
|
|
|
|
/*
|
|
* Configure the RAM DACs.
|
|
*/
|
|
bt455_erase_cursor(ip->bt455);
|
|
|
|
/* Init colormap. */
|
|
bt455_write_cmap_entry(ip->bt455, 0, 0x00, 0x00, 0x00);
|
|
bt455_write_cmap_entry(ip->bt455, 1, 0x0f, 0x0f, 0x0f);
|
|
|
|
/* Init hardware cursor. */
|
|
bt431_init_cursor(ip->bt431);
|
|
aafb_cursor_init(ip);
|
|
|
|
/* Clear the screen. */
|
|
memset ((void *)ip->fb_start, 0, ip->fb_size);
|
|
|
|
if (register_framebuffer(&ip->info) < 0)
|
|
return -EINVAL;
|
|
|
|
printk(KERN_INFO "fb%d: %s frame buffer in TC slot %d\n",
|
|
GET_FB_IDX(ip->info.node), ip->info.modename, slot);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __exit exit_one(int slot)
|
|
{
|
|
struct aafb_info *ip = &my_fb_info[slot];
|
|
|
|
if (unregister_framebuffer(&ip->info) < 0)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Initialise the framebuffer.
|
|
*/
|
|
int __init pmagaafb_init(void)
|
|
{
|
|
int sid;
|
|
int found = 0;
|
|
|
|
while ((sid = search_tc_card("PMAG-AA")) >= 0) {
|
|
found = 1;
|
|
claim_tc_card(sid);
|
|
init_one(sid);
|
|
}
|
|
|
|
return found ? 0 : -ENXIO;
|
|
}
|
|
|
|
static void __exit pmagaafb_exit(void)
|
|
{
|
|
int sid;
|
|
|
|
while ((sid = search_tc_card("PMAG-AA")) >= 0) {
|
|
exit_one(sid);
|
|
release_tc_card(sid);
|
|
}
|
|
}
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
|
|
MODULE_LICENSE("GPL");
|
|
#ifdef MODULE
|
|
module_init(pmagaafb_init);
|
|
module_exit(pmagaafb_exit);
|
|
#endif
|