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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>
254 lines
6.7 KiB
C
254 lines
6.7 KiB
C
/* $Id: g364fb.c,v 1.3 1998/08/28 22:43:00 tsbogend Exp $
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*
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* linux/drivers/video/g364fb.c -- Mips Magnum frame buffer device
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*
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* (C) 1998 Thomas Bogendoerfer
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*
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* This driver is based on tgafb.c
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*
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* Copyright (C) 1997 Geert Uytterhoeven
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* Copyright (C) 1995 Jay Estabrook
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include <linux/module.h>
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#include <linux/console.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/mm.h>
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#include <linux/vmalloc.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <asm/io.h>
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#include <asm/jazz.h>
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/*
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* Various defines for the G364
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*/
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#define G364_MEM_BASE 0xe4400000
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#define G364_PORT_BASE 0xe4000000
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#define ID_REG 0xe4000000 /* Read only */
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#define BOOT_REG 0xe4080000
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#define TIMING_REG 0xe4080108 /* to 0x080170 - DON'T TOUCH! */
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#define DISPLAY_REG 0xe4080118
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#define VDISPLAY_REG 0xe4080150
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#define MASK_REG 0xe4080200
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#define CTLA_REG 0xe4080300
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#define CURS_TOGGLE 0x800000
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#define BIT_PER_PIX 0x700000 /* bits 22 to 20 of Control A */
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#define DELAY_SAMPLE 0x080000
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#define PORT_INTER 0x040000
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#define PIX_PIPE_DEL 0x030000 /* bits 17 and 16 of Control A */
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#define PIX_PIPE_DEL2 0x008000 /* same as above - don't ask me why */
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#define TR_CYCLE_TOG 0x004000
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#define VRAM_ADR_INC 0x003000 /* bits 13 and 12 of Control A */
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#define BLANK_OFF 0x000800
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#define FORCE_BLANK 0x000400
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#define BLK_FUN_SWTCH 0x000200
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#define BLANK_IO 0x000100
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#define BLANK_LEVEL 0x000080
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#define A_VID_FORM 0x000040
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#define D_SYNC_FORM 0x000020
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#define FRAME_FLY_PAT 0x000010
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#define OP_MODE 0x000008
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#define INTL_STAND 0x000004
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#define SCRN_FORM 0x000002
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#define ENABLE_VTG 0x000001
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#define TOP_REG 0xe4080400
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#define CURS_PAL_REG 0xe4080508 /* to 0x080518 */
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#define CHKSUM_REG 0xe4080600 /* to 0x080610 - unused */
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#define CURS_POS_REG 0xe4080638
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#define CLR_PAL_REG 0xe4080800 /* to 0x080ff8 */
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#define CURS_PAT_REG 0xe4081000 /* to 0x081ff8 */
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#define MON_ID_REG 0xe4100000 /* unused */
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#define RESET_REG 0xe4180000 /* Write only */
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static struct fb_info fb_info;
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static struct fb_fix_screeninfo fb_fix __initdata = {
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.id = "G364 8plane",
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.smem_start = 0x40000000, /* physical address */
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.type = FB_TYPE_PACKED_PIXELS,
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.visual = FB_VISUAL_PSEUDOCOLOR,
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.ypanstep = 1,
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.accel = FB_ACCEL_NONE,
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};
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static struct fb_var_screeninfo fb_var __initdata = {
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.bits_per_pixel = 8,
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.red = { 0, 8, 0 },
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.green = { 0, 8, 0 },
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.blue = { 0, 8, 0 },
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.activate = FB_ACTIVATE_NOW,
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.height = -1,
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.width = -1,
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.pixclock = 39722,
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.left_margin = 40,
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.right_margin = 24,
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.upper_margin = 32,
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.lower_margin = 11,
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.hsync_len = 96,
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.vsync_len = 2,
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.vmode = FB_VMODE_NONINTERLACED,
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};
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/*
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* Interface used by the world
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*/
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int g364fb_init(void);
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static int g364fb_pan_display(struct fb_var_screeninfo *var,
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struct fb_info *info);
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static int g364fb_setcolreg(u_int regno, u_int red, u_int green,
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u_int blue, u_int transp,
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struct fb_info *info);
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static int g364fb_cursor(struct fb_info *info, struct fb_cursor *cursor);
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static int g364fb_blank(int blank, struct fb_info *info);
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static struct fb_ops g364fb_ops = {
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.owner = THIS_MODULE,
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.fb_setcolreg = g364fb_setcolreg,
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.fb_pan_display = g364fb_pan_display,
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.fb_blank = g364fb_blank,
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.fb_fillrect = cfb_fillrect,
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.fb_copyarea = cfb_copyarea,
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.fb_imageblit = cfb_imageblit,
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.fb_cursor = g364fb_cursor,
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};
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int g364fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
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{
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switch (cursor->enable) {
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case CM_ERASE:
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*(unsigned int *) CTLA_REG |= CURS_TOGGLE;
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break;
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case CM_MOVE:
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case CM_DRAW:
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*(unsigned int *) CTLA_REG &= ~CURS_TOGGLE;
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*(unsigned int *) CURS_POS_REG =
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((x * fontwidth(p)) << 12) | ((y * fontheight(p)) -
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info->var.yoffset);
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break;
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}
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return 0;
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}
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/*
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* Pan or Wrap the Display
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*
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* This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
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*/
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static int g364fb_pan_display(struct fb_var_screeninfo *var,
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struct fb_info *info)
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{
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if (var->xoffset || var->yoffset + var->yres > var->yres_virtual)
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return -EINVAL;
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*(unsigned int *) TOP_REG = var->yoffset * var->xres;
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return 0;
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}
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/*
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* Blank the display.
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*/
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static int g364fb_blank(int blank, struct fb_info *info)
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{
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if (blank)
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*(unsigned int *) CTLA_REG |= FORCE_BLANK;
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else
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*(unsigned int *) CTLA_REG &= ~FORCE_BLANK;
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return 0;
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}
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/*
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* Set a single color register. Return != 0 for invalid regno.
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*/
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static int g364fb_setcolreg(u_int regno, u_int red, u_int green,
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u_int blue, u_int transp, struct fb_info *info)
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{
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volatile unsigned int *ptr = (volatile unsigned int *) CLR_PAL_REG;
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if (regno > 255)
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return 1;
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red >>= 8;
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green >>= 8;
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blue >>= 8;
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ptr[regno << 1] = (red << 16) | (green << 8) | blue;
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return 0;
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}
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/*
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* Initialisation
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*/
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int __init g364fb_init(void)
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{
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volatile unsigned int *pal_ptr =
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(volatile unsigned int *) CLR_PAL_REG;
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volatile unsigned int *curs_pal_ptr =
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(volatile unsigned int *) CURS_PAL_REG;
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int mem, i, j;
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if (fb_get_options("g364fb", NULL))
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return -ENODEV;
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/* TBD: G364 detection */
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/* get the resolution set by ARC console */
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*(volatile unsigned int *) CTLA_REG &= ~ENABLE_VTG;
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fb_var.xres =
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(*((volatile unsigned int *) DISPLAY_REG) & 0x00ffffff) * 4;
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fb_var.yres =
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(*((volatile unsigned int *) VDISPLAY_REG) & 0x00ffffff) / 2;
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*(volatile unsigned int *) CTLA_REG |= ENABLE_VTG;
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/* setup cursor */
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curs_pal_ptr[0] |= 0x00ffffff;
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curs_pal_ptr[2] |= 0x00ffffff;
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curs_pal_ptr[4] |= 0x00ffffff;
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/*
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* first set the whole cursor to transparent
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*/
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for (i = 0; i < 512; i++)
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*(unsigned short *) (CURS_PAT_REG + i * 8) = 0;
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/*
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* switch the last two lines to cursor palette 3
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* we assume here, that FONTSIZE_X is 8
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*/
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*(unsigned short *) (CURS_PAT_REG + 14 * 64) = 0xffff;
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*(unsigned short *) (CURS_PAT_REG + 15 * 64) = 0xffff;
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fb_var.xres_virtual = fbvar.xres;
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fb_fix.line_length = (xres / 8) * fb_var.bits_per_pixel;
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fb_fix.smem_start = 0x40000000; /* physical address */
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/* get size of video memory; this is special for the JAZZ hardware */
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mem = (r4030_read_reg32(JAZZ_R4030_CONFIG) >> 8) & 3;
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fb_fix.smem_len = (1 << (mem * 2)) * 512 * 1024;
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fb_var.yres_virtual = fb_fix.smem_len / fb_var.xres;
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fb_info.fbops = &g364fb_ops;
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fb_info.screen_base = (char *) G364_MEM_BASE; /* virtual kernel address */
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fb_info.var = fb_var;
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fb_info.fix = fb_fix;
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fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
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fb_alloc_cmap(&fb_info.cmap, 255, 0);
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if (register_framebuffer(&fb_info) < 0)
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return -EINVAL;
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return 0;
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}
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module_init(g364fb_init);
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MODULE_LICENSE("GPL");
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