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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [m68k/] [atari/] [atafb.c] - Rev 1623
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/* * atari/atafb.c -- Low level implementation of Atari frame buffer device * * Copyright (C) 1994 Martin Schaller & Roman Hodek * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive * for more details. * * History: * - 03 Jan 95: Original version by Martin Schaller: The TT driver and * all the device independent stuff * - 09 Jan 95: Roman: I've added the hardware abstraction (hw_switch) * and wrote the Falcon, ST(E), and External drivers * based on the original TT driver. * - 07 May 95: Martin: Added colormap operations for the external driver * - 21 May 95: Martin: Added support for overscan * Andreas: some bug fixes for this * - Jul 95: Guenther Kelleter <guenther@pool.informatik.rwth-aachen.de>: * Programmable Falcon video modes * (thanks to Christian Cartus for documentation * of VIDEL registers). * - 27 Dec 95: Guenther: Implemented user definable video modes "user[0-7]" * on minor 24...31. "user0" may be set on commandline by * "R<x>;<y>;<depth>". (Makes sense only on Falcon) * Video mode switch on Falcon now done at next VBL interrupt * to avoid the annoying right shift of the screen. * * * To do: * - For the Falcon it is not possible to set random video modes on * SM124 and SC/TV, only the bootup resolution is supported. * */ #define ATAFB_TT #define ATAFB_STE #define ATAFB_EXT #define ATAFB_FALCON #include <linux/kernel.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/tty.h> #include <linux/malloc.h> #include <linux/delay.h> #include <asm/segment.h> #include <asm/pgtable.h> #include <asm/irq.h> #include <asm/atarihw.h> #include <asm/atariints.h> #include <asm/bootinfo.h> #include <linux/fb.h> #include <asm/atarikb.h> #define SWITCH_ACIA 0x01 /* modes for switch on OverScan */ #define SWITCH_SND6 0x40 #define SWITCH_SND7 0x80 #define SWITCH_NONE 0x00 #define arraysize(x) (sizeof(x)/sizeof(*(x))) #define up(x, r) (((x) + (r) - 1) & ~((r)-1)) static int default_par=0; /* default resolution (0=none) */ static int node; /* node of the /dev/fb?current file */ static unsigned long default_mem_req=0; static int hwscroll=-1; static int use_hwscroll = 1; static int sttt_xres=640,st_yres=400,tt_yres=480; static int sttt_xres_virtual=640,sttt_yres_virtual=400; static int ovsc_offset=0, ovsc_addlen=0; int ovsc_switchmode=0; #ifdef ATAFB_FALCON static int pwrsave = 0; /* use VESA suspend mode instead of blanking only? */ #endif static struct atari_fb_par { unsigned long screen_base; int vyres; union { struct { int mode; int sync; } tt, st; struct falcon_hw { /* Here are fields for storing a video mode, as direct * parameters for the hardware. */ short sync; short line_width; short line_offset; short st_shift; short f_shift; short vid_control; short vid_mode; short xoffset; short hht, hbb, hbe, hdb, hde, hss; short vft, vbb, vbe, vdb, vde, vss; /* auxiliary information */ short mono; short ste_mode; short bpp; } falcon; /* Nothing needed for external mode */ } hw; } current_par; /* Don't calculate an own resolution, and thus don't change the one found when * booting (currently used for the Falcon to keep settings for internal video * hardware extensions (e.g. ScreenBlaster) */ static int DontCalcRes = 0; #define HHT hw.falcon.hht #define HBB hw.falcon.hbb #define HBE hw.falcon.hbe #define HDB hw.falcon.hdb #define HDE hw.falcon.hde #define HSS hw.falcon.hss #define VFT hw.falcon.vft #define VBB hw.falcon.vbb #define VBE hw.falcon.vbe #define VDB hw.falcon.vdb #define VDE hw.falcon.vde #define VSS hw.falcon.vss #define VCO_CLOCK25 0x04 #define VCO_CSYPOS 0x10 #define VCO_VSYPOS 0x20 #define VCO_HSYPOS 0x40 #define VCO_SHORTOFFS 0x100 #define VMO_DOUBLE 0x01 #define VMO_INTER 0x02 #define VMO_PREMASK 0x0c static struct fb_info fb_info; static unsigned long screen_base; /* base address of screen */ static unsigned long real_screen_base; /* (only for Overscan) */ static int screen_len; static int current_par_valid=0; static int currcon=0; static int mono_moni=0; static struct display disp[MAX_NR_CONSOLES]; #ifdef ATAFB_EXT /* external video handling */ static unsigned external_xres; static unsigned external_yres; static unsigned external_depth; static int external_pmode; static unsigned long external_addr = 0; static unsigned long external_len; static unsigned long external_vgaiobase = 0; static unsigned int external_bitspercol = 6; /* ++JOE <joe@amber.dinoco.de>: added card type for external driver, is only needed for colormap handling. */ enum cardtype { IS_VGA, IS_MV300 }; static enum cardtype external_card_type = IS_VGA; /* The MV300 mixes the color registers. So we need an array of munged indices in order to acces the correct reg. */ static int MV300_reg_1bit[2]={0,1}; static int MV300_reg_4bit[16]={ 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 }; static int MV300_reg_8bit[256]={ 0, 128, 64, 192, 32, 160, 96, 224, 16, 144, 80, 208, 48, 176, 112, 240, 8, 136, 72, 200, 40, 168, 104, 232, 24, 152, 88, 216, 56, 184, 120, 248, 4, 132, 68, 196, 36, 164, 100, 228, 20, 148, 84, 212, 52, 180, 116, 244, 12, 140, 76, 204, 44, 172, 108, 236, 28, 156, 92, 220, 60, 188, 124, 252, 2, 130, 66, 194, 34, 162, 98, 226, 18, 146, 82, 210, 50, 178, 114, 242, 10, 138, 74, 202, 42, 170, 106, 234, 26, 154, 90, 218, 58, 186, 122, 250, 6, 134, 70, 198, 38, 166, 102, 230, 22, 150, 86, 214, 54, 182, 118, 246, 14, 142, 78, 206, 46, 174, 110, 238, 30, 158, 94, 222, 62, 190, 126, 254, 1, 129, 65, 193, 33, 161, 97, 225, 17, 145, 81, 209, 49, 177, 113, 241, 9, 137, 73, 201, 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, 121, 249, 5, 133, 69, 197, 37, 165, 101, 229, 21, 149, 85, 213, 53, 181, 117, 245, 13, 141, 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, 61, 189, 125, 253, 3, 131, 67, 195, 35, 163, 99, 227, 19, 147, 83, 211, 51, 179, 115, 243, 11, 139, 75, 203, 43, 171, 107, 235, 27, 155, 91, 219, 59, 187, 123, 251, 7, 135, 71, 199, 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, 119, 247, 15, 143, 79, 207, 47, 175, 111, 239, 31, 159, 95, 223, 63, 191, 127, 255 }; static int *MV300_reg = MV300_reg_8bit; /* And on the MV300 it's difficult to read out the hardware palette. So we just keep track of the set colors in our own array here, and use that! */ struct { unsigned char red,green,blue,pad; } MV300_color[256]; #endif /* ATAFB_EXT */ int inverse=0; extern int fontheight_8x8; extern int fontwidth_8x8; extern unsigned char fontdata_8x8[]; extern int fontheight_8x16; extern int fontwidth_8x16; extern unsigned char fontdata_8x16[]; /* import first 16 colors from fbcon.c */ extern unsigned short packed16_cmap[16]; /* ++roman: This structure abstracts from the underlying hardware (ST(e), * TT, or Falcon. * * int (*detect)( void ) * This function should detect the current video mode settings and * store them in atari_fb_predefined[0] for later reference by the * user. Return the index+1 of an equivalent predefined mode or 0 * if there is no such. * * int (*encode_fix)( struct fb_fix_screeninfo *fix, * struct atari_fb_par *par ) * This function should fill in the 'fix' structure based on the * values in the 'par' structure. * * int (*decode_var)( struct fb_var_screeninfo *var, * struct atari_fb_par *par ) * Get the video params out of 'var'. If a value doesn't fit, round * it up, if it's too big, return EINVAL. * Round up in the following order: bits_per_pixel, xres, yres, * xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields, * horizontal timing, vertical timing. * * int (*encode_var)( struct fb_var_screeninfo *var, * struct atari_fb_par *par ); * Fill the 'var' structure based on the values in 'par' and maybe * other values read out of the hardware. * * void (*get_par)( struct atari_fb_par *par ) * Fill the hardware's 'par' structure. * * void (*set_par)( struct atari_fb_par *par ) * Set the hardware according to 'par'. * * int (*setcolreg)( unsigned regno, unsigned red, * unsigned green, unsigned blue, * unsigned transp ) * Set a single color register. The values supplied are already * rounded down to the hardware's capabilities (according to the * entries in the var structure). Return != 0 for invalid regno. * * int (*getcolreg)( unsigned regno, unsigned *red, * unsigned *green, unsigned *blue, * unsigned *transp ) * Read a single color register and split it into * colors/transparent. Return != 0 for invalid regno. * * void (*set_screen_base)( unsigned long s_base ) * Set the base address of the displayed frame buffer. Only called * if yres_virtual > yres or xres_virtual > xres. * * int (*blank)( int blank_mode ) * Blank the screen if blank_mode != 0, else unblank. If NULL then blanking * is done by setting the CLUT to black. Return != 0 if un-/blanking * failed due to e.g. video mode which doesn't support it. */ static struct fb_hwswitch { int (*detect)( void ); int (*encode_fix)( struct fb_fix_screeninfo *fix, struct atari_fb_par *par ); int (*decode_var)( struct fb_var_screeninfo *var, struct atari_fb_par *par ); int (*encode_var)( struct fb_var_screeninfo *var, struct atari_fb_par *par ); void (*get_par)( struct atari_fb_par *par ); void (*set_par)( struct atari_fb_par *par ); int (*getcolreg)( unsigned regno, unsigned *red, unsigned *green, unsigned *blue, unsigned *transp ); int (*setcolreg)( unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp ); void (*set_screen_base)( unsigned long s_base ); int (*blank)( int blank_mode ); int (*pan_display)( struct fb_var_screeninfo *var, struct atari_fb_par *par); } *fbhw; static char *autodetect_names[] = {"autodetect", NULL}; static char *stlow_names[] = {"stlow", NULL}; static char *stmid_names[] = {"stmid", "default5", NULL}; static char *sthigh_names[] = {"sthigh", "default4", NULL}; static char *ttlow_names[] = {"ttlow", NULL}; static char *ttmid_names[]= {"ttmid", "default1", NULL}; static char *tthigh_names[]= {"tthigh", "default2", NULL}; static char *vga2_names[] = {"vga2", NULL}; static char *vga4_names[] = {"vga4", NULL}; static char *vga16_names[] = {"vga16", "default3", NULL}; static char *vga256_names[] = {"vga256", NULL}; static char *falh2_names[] = {"falh2", NULL}; static char *falh16_names[] = {"falh16", NULL}; static char *user0_names[] = {"user0", NULL}; static char *user1_names[] = {"user1", NULL}; static char *user2_names[] = {"user2", NULL}; static char *user3_names[] = {"user3", NULL}; static char *user4_names[] = {"user4", NULL}; static char *user5_names[] = {"user5", NULL}; static char *user6_names[] = {"user6", NULL}; static char *user7_names[] = {"user7", NULL}; static char *dummy_names[] = {"dummy", NULL}; char **fb_var_names[] = { /* Writing the name arrays directly in this array (via "(char *[]){...}") * crashes gcc 2.5.8 (sigsegv) if the inner array * contains more than two items. I've also seen that all elements * were identical to the last (my cross-gcc) :-(*/ autodetect_names, stlow_names, stmid_names, sthigh_names, ttlow_names, ttmid_names, tthigh_names, vga2_names, vga4_names, vga16_names, vga256_names, falh2_names, falh16_names, dummy_names, dummy_names, dummy_names, dummy_names, dummy_names, dummy_names, dummy_names, dummy_names, dummy_names, dummy_names, user0_names, user1_names, user2_names, user3_names, user4_names, user5_names, user6_names, user7_names, NULL /* ,NULL */ /* this causes a sigsegv on my gcc-2.5.8 */ }; struct fb_var_screeninfo atari_fb_predefined[] = { { /* autodetect */ 0, 0, 0, 0, 0, 0, 0, 0, /* xres-grayscale */ {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* st low */ 320, 200, 320, 200, 0, 0, 4, 0, /* xres-grayscale */ {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* st mid */ 640, 200, 640, 200, 0, 0, 2, 0, /* xres-grayscale */ {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* st high */ 640, 400, 640, 400, 0, 0, 1, 0, /* xres-grayscale */ {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* tt low */ 320, 480, 320, 480, 0, 0, 8, 0, /* xres-grayscale */ {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* tt mid */ 640, 480, 640, 480, 0, 0, 4, 0, /* xres-grayscale */ {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* tt high */ 1280, 960, 1280, 960, 0, 0, 1, 0, /* xres-grayscale */ {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* vga2 */ 640, 480, 640, 480, 0, 0, 1, 0, /* xres-grayscale */ {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* vga4 */ 640, 480, 640, 480, 0, 0, 2, 0, /* xres-grayscale */ {0, 4, 0}, {0, 4, 0}, {0, 4, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* vga16 */ 640, 480, 640, 480, 0, 0, 4, 0, /* xres-grayscale */ {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* vga256 */ 640, 480, 640, 480, 0, 0, 8, 0, /* xres-grayscale */ {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* falh2 */ 896, 608, 896, 608, 0, 0, 1, 0, /* xres-grayscale */ {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* falh16 */ 896, 608, 896, 608, 0, 0, 4, 0, /* xres-grayscale */ {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, /* red green blue tran*/ 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, /* Minor 14..23 free for more standard video modes */ { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, /* Minor 24..31 reserved for user defined video modes */ { /* user0, initialized to Rx;y;d from commandline, if supplied */ 0, 0, 0, 0, 0, 0, 0, 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* user1 */ 0, 0, 0, 0, 0, 0, 0, 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* user2 */ 0, 0, 0, 0, 0, 0, 0, 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* user3 */ 0, 0, 0, 0, 0, 0, 0, 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* user4 */ 0, 0, 0, 0, 0, 0, 0, 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* user5 */ 0, 0, 0, 0, 0, 0, 0, 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* user6 */ 0, 0, 0, 0, 0, 0, 0, 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 }, { /* user7 */ 0, 0, 0, 0, 0, 0, 0, 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 0, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 } }; int num_atari_fb_predefined=arraysize(atari_fb_predefined); static int get_video_mode(char *vname) { char ***name_list; char **name; int i; name_list=fb_var_names; for (i = 0 ; i < num_atari_fb_predefined ; i++) { name=*(name_list++); if (! name || ! *name) break; while (*name) { if (! strcmp(vname, *name)) return i+1; name++; } } return 0; } /* ------------------- TT specific functions ---------------------- */ #ifdef ATAFB_TT static int tt_encode_fix( struct fb_fix_screeninfo *fix, struct atari_fb_par *par ) { int mode, i; strcpy(fix->id,"Atari Builtin"); fix->smem_start=real_screen_base; fix->smem_len = screen_len; fix->type=FB_TYPE_INTERLEAVED_PLANES; fix->type_aux=2; fix->visual=FB_VISUAL_PSEUDOCOLOR; mode = par->hw.tt.mode & TT_SHIFTER_MODEMASK; if (mode == TT_SHIFTER_TTHIGH || mode == TT_SHIFTER_STHIGH) { fix->type=FB_TYPE_PACKED_PIXELS; fix->type_aux=0; if (mode == TT_SHIFTER_TTHIGH) fix->visual=FB_VISUAL_MONO01; } fix->xpanstep=0; fix->ypanstep=1; fix->ywrapstep=0; fix->line_length = 0; for (i=0; i<arraysize(fix->reserved); i++) fix->reserved[i]=0; return 0; } static int tt_decode_var( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { int xres=var->xres; int yres=var->yres; int bpp=var->bits_per_pixel; int linelen; if (mono_moni) { if (bpp > 1 || xres > sttt_xres*2 || yres >tt_yres*2) return -EINVAL; par->hw.tt.mode=TT_SHIFTER_TTHIGH; xres=sttt_xres*2; yres=tt_yres*2; bpp=1; } else { if (bpp > 8 || xres > sttt_xres || yres > tt_yres) return -EINVAL; if (bpp > 4) { if (xres > sttt_xres/2 || yres > tt_yres) return -EINVAL; par->hw.tt.mode=TT_SHIFTER_TTLOW; xres=sttt_xres/2; yres=tt_yres; bpp=8; } else if (bpp > 2) { if (xres > sttt_xres || yres > tt_yres) return -EINVAL; if (xres > sttt_xres/2 || yres > st_yres/2) { par->hw.tt.mode=TT_SHIFTER_TTMID; xres=sttt_xres; yres=tt_yres; bpp=4; } else { par->hw.tt.mode=TT_SHIFTER_STLOW; xres=sttt_xres/2; yres=st_yres/2; bpp=4; } } else if (bpp > 1) { if (xres > sttt_xres || yres > st_yres/2) return -EINVAL; par->hw.tt.mode=TT_SHIFTER_STMID; xres=sttt_xres; yres=st_yres/2; bpp=2; } else if (var->xres > sttt_xres || var->yres > st_yres) { return -EINVAL; } else { par->hw.tt.mode=TT_SHIFTER_STHIGH; xres=sttt_xres; yres=st_yres; bpp=1; } } if (var->sync & FB_SYNC_EXT) par->hw.tt.sync=0; else par->hw.tt.sync=1; linelen=xres*bpp/8; if ((var->yoffset + yres)*linelen > screen_len && screen_len) return -EINVAL; par->screen_base=screen_base+ var->yoffset*linelen; return 0; } static int tt_encode_var( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { int linelen, i; var->red.offset=0; var->red.length=4; var->red.msb_right=0; var->grayscale=0; var->pixclock=31041; var->left_margin=120; /* these may be incorrect */ var->right_margin=100; var->upper_margin=8; var->lower_margin=16; var->hsync_len=140; var->vsync_len=30; var->height=-1; var->width=-1; if (par->hw.tt.sync & 1) var->sync=0; else var->sync=FB_SYNC_EXT; switch (par->hw.tt.mode & TT_SHIFTER_MODEMASK) { case TT_SHIFTER_STLOW: var->xres=sttt_xres/2; var->xres_virtual=sttt_xres_virtual/2; var->yres=st_yres/2; var->bits_per_pixel=4; break; case TT_SHIFTER_STMID: var->xres=sttt_xres; var->xres_virtual=sttt_xres_virtual; var->yres=st_yres/2; var->bits_per_pixel=2; break; case TT_SHIFTER_STHIGH: var->xres=sttt_xres; var->xres_virtual=sttt_xres_virtual; var->yres=st_yres; var->bits_per_pixel=1; break; case TT_SHIFTER_TTLOW: var->xres=sttt_xres/2; var->xres_virtual=sttt_xres_virtual/2; var->yres=tt_yres; var->bits_per_pixel=8; break; case TT_SHIFTER_TTMID: var->xres=sttt_xres; var->xres_virtual=sttt_xres_virtual; var->yres=tt_yres; var->bits_per_pixel=4; break; case TT_SHIFTER_TTHIGH: var->red.length=0; var->xres=sttt_xres*2; var->xres_virtual=sttt_xres_virtual*2; var->yres=tt_yres*2; var->bits_per_pixel=1; break; } var->blue=var->green=var->red; var->transp.offset=0; var->transp.length=0; var->transp.msb_right=0; linelen=var->xres_virtual * var->bits_per_pixel / 8; if (! use_hwscroll) var->yres_virtual=var->yres; else if (screen_len) var->yres_virtual=screen_len/linelen; else { if (hwscroll < 0) var->yres_virtual = 2 * var->yres; else var->yres_virtual=var->yres+hwscroll * 16; } var->xoffset=0; if (screen_base) var->yoffset=(par->screen_base - screen_base)/linelen; else var->yoffset=0; var->nonstd=0; var->activate=0; var->vmode=FB_VMODE_NONINTERLACED; for (i=0; i<arraysize(var->reserved); i++) var->reserved[i]=0; return 0; } static void tt_get_par( struct atari_fb_par *par ) { unsigned long addr; par->hw.tt.mode=shifter_tt.tt_shiftmode; par->hw.tt.sync=shifter.syncmode; addr = ((shifter.bas_hi & 0xff) << 16) | ((shifter.bas_md & 0xff) << 8) | ((shifter.bas_lo & 0xff)); par->screen_base = PTOV(addr); } static void tt_set_par( struct atari_fb_par *par ) { shifter_tt.tt_shiftmode=par->hw.tt.mode; shifter.syncmode=par->hw.tt.sync; /* only set screen_base if really necessary */ if (current_par.screen_base != par->screen_base) fbhw->set_screen_base(par->screen_base); } static int tt_getcolreg( unsigned regno, unsigned *red, unsigned *green, unsigned *blue, unsigned *transp ) { if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH) regno += 254; if (regno > 255) return 1; *blue = tt_palette[regno]; *green = (*blue >> 4) & 0xf; *red = (*blue >> 8) & 0xf; *blue &= 0xf; *transp = 0; return 0; } static int tt_setcolreg( unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp ) { if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH) regno += 254; if (regno > 255) return 1; tt_palette[regno] = (red << 8) | (green << 4) | blue; if ((shifter_tt.tt_shiftmode & TT_SHIFTER_MODEMASK) == TT_SHIFTER_STHIGH && regno == 254) tt_palette[0] = 0; return 0; } static int tt_detect( void ) { struct atari_fb_par par; /* Determine the connected monitor: The DMA sound must be * disabled before reading the MFP GPIP, because the Sound * Done Signal and the Monochrome Detect are XORed together! * * Even on a TT, we should look if there is a DMA sound. It was * announced that the Eagle is TT compatible, but only the PCM is * missing... */ if (ATARIHW_PRESENT(PCM_8BIT)) { tt_dmasnd.ctrl = DMASND_CTRL_OFF; udelay(20); /* wait a while for things to settle down */ } mono_moni = (mfp.par_dt_reg & 0x80) == 0; tt_get_par(&par); tt_encode_var(&atari_fb_predefined[0], &par); return 1; } #endif /* ATAFB_TT */ /* ------------------- Falcon specific functions ---------------------- */ #ifdef ATAFB_FALCON static int mon_type; /* Falcon connected monitor */ static int f030_bus_width; /* Falcon ram bus width (for vid_control) */ #define F_MON_SM 0 #define F_MON_SC 1 #define F_MON_VGA 2 #define F_MON_TV 3 /* Multisync monitor capabilities */ /* Atari-TOS defaults if no boot option present */ static long vfmin=58, vfmax=62, hfmin=31000, hfmax=32000; static struct pixel_clock { unsigned long f; /* f/[Hz] */ unsigned long t; /* t/[ps] (=1/f) */ short right, hsync, left; /* standard timing in clock cycles, not pixel */ /* hsync initialized in falcon_detect() */ short sync_mask; /* or-mask for hw.falcon.sync to set this clock */ short control_mask; /* ditto, for hw.falcon.vid_control */ } f25 = {25175000, 39722, 18, 0, 42, 0x0, VCO_CLOCK25}, f32 = {32000000, 31250, 18, 0, 42, 0x0, 0}, fext = { 0, 0, 18, 0, 42, 0x1, 0}; /* VIDEL-prescale values [mon_type][pixel_length from VCO] */ static short vdl_prescale[4][3] = {{4,2,1}, {4,2,1}, {4,2,2}, {4,2,1}}; /* Default hsync timing [mon_type] in picoseconds */ static long h_syncs[4] = {3000000, 4700000, 4000000, 4700000}; static inline int hxx_prescale(struct falcon_hw *hw) { return hw->ste_mode ? 16 : vdl_prescale[mon_type][hw->vid_mode >> 2 & 0x3]; } static int falcon_encode_fix( struct fb_fix_screeninfo *fix, struct atari_fb_par *par ) { int i; strcpy(fix->id, "Atari Builtin"); fix->smem_start = real_screen_base; fix->smem_len = screen_len; fix->type = FB_TYPE_INTERLEAVED_PLANES; fix->type_aux = 2; fix->visual = FB_VISUAL_PSEUDOCOLOR; if (par->hw.falcon.mono) { fix->type = FB_TYPE_PACKED_PIXELS; fix->type_aux = 0; } else if (par->hw.falcon.f_shift & 0x100) { fix->type = FB_TYPE_PACKED_PIXELS; fix->type_aux = 0; fix->visual = FB_VISUAL_TRUECOLOR; /* is this ok or should this be DIRECTCOLOR? */ } if (par->hw.falcon.mono) /* no smooth scrolling possible with longword aligned video mem */ fix->xpanstep = 32; else fix->xpanstep = 1; fix->ypanstep = 1; fix->ywrapstep = 0; fix->line_length = 0; for (i=0; i<arraysize(fix->reserved); i++) fix->reserved[i]=0; return 0; } static int falcon_decode_var( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { int use_default_timing = 0; int bpp = var->bits_per_pixel; int xres = var->xres; int yres = var->yres; int xres_virtual = var->xres_virtual; int yres_virtual = var->yres_virtual; int left_margin, right_margin, hsync_len; int upper_margin, lower_margin, vsync_len; int linelen; int interlace = 0, doubleline = 0; struct pixel_clock *pclock; int plen; /* width of pixel in clock cycles */ int xstretch; int prescale; int longoffset = 0; int hfreq, vfreq; /* Get the video params out of 'var'. If a value doesn't fit, round it up, if it's too big, return EINVAL. Round up in the following order: bits_per_pixel, xres, yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale, bitfields, horizontal timing, vertical timing. There is a maximum of screen resolution determined by pixelclock and minimum frame rate -- (X+hmarg.)*(Y+vmarg.)*vfmin <= pixelclock. In interlace mode this is " * " *vfmin <= pixelclock. Additional constraints: hfreq. Frequency range for multisync monitors is given via command line. For TV and SM124 both frequencies are fixed. X % 16 == 0 to fit 8x?? font (except 1 bitplane modes must use X%32==0) Y % 16 == 0 to fit 8x16 font Y % 8 == 0 if Y<400 Currently interlace and doubleline mode in var are ignored. On SM124 and TV only the standard resolutions can be used. */ /* Reject uninitialized mode */ if (!xres || !yres || !bpp) return -EINVAL; if (mon_type == F_MON_SM && bpp != 1) { return -EINVAL; } else if (bpp <= 1) { bpp = 1; par->hw.falcon.f_shift = 0x400; par->hw.falcon.st_shift = 0x200; } else if (bpp <= 2) { bpp = 2; par->hw.falcon.f_shift = 0x000; par->hw.falcon.st_shift = 0x100; } else if (bpp <= 4) { bpp = 4; par->hw.falcon.f_shift = 0x000; par->hw.falcon.st_shift = 0x000; } else if (bpp <= 8) { bpp = 8; par->hw.falcon.f_shift = 0x010; } else if (bpp <= 16) { bpp = 16; /* packed pixel mode */ par->hw.falcon.f_shift = 0x100; /* hicolor, no overlay */ } else return -EINVAL; par->hw.falcon.bpp = bpp; if (mon_type != F_MON_VGA || DontCalcRes) { /* Skip all calculations, VGA multisync only yet */ struct fb_var_screeninfo *myvar = &atari_fb_predefined[0]; if (bpp > myvar->bits_per_pixel || var->xres > myvar->xres || var->yres > myvar->yres) return -EINVAL; fbhw->get_par(par); /* Current par will be new par */ goto set_screen_base; /* Don't forget this */ } /* Only some fixed resolutions < 640x480 */ if (xres <= 320) xres = 320; else if (xres <= 640 && bpp != 16) xres = 640; if (yres <= 200) yres = 200; else if (yres <= 240) yres = 240; else if (yres <= 400) yres = 400; else if (yres <= 480) yres = 480; /* 2 planes must use STE compatibility mode */ par->hw.falcon.ste_mode = bpp==2; par->hw.falcon.mono = bpp==1; /* Total and visible scanline length must be a multiple of one longword, * this and the console fontwidth yields the alignment for xres and * xres_virtual. * * Special case in STE mode: blank and graphic positions don't align, * avoid trash at right margin */ if (par->hw.falcon.ste_mode) xres = (xres + 63) & ~63; else if (bpp == 1) xres = (xres + 31) & ~31; else xres = (xres + 15) & ~15; if (yres >= 400) yres = (yres + 15) & ~15; else yres = (yres + 7) & ~7; if (xres_virtual < xres) xres_virtual = xres; else if (bpp == 1) xres_virtual = (xres_virtual + 31) & ~31; else xres_virtual = (xres_virtual + 15) & ~15; /* <=0 : yres_virtual determined by screensize */ if (yres_virtual < yres && yres_virtual > 0) yres_virtual = yres; par->hw.falcon.line_width = bpp * xres / 16; par->hw.falcon.line_offset = bpp * (xres_virtual - xres) / 16; /* single or double pixel width */ xstretch = (xres == 320) ? 2 : 1; /* Default values are used for vert./hor. timing if no pixelclock given. */ if (var->pixclock == 0) use_default_timing = 1; #if 0 /* currently unused */ if (mon_type == F_MON_SM) { if (xres != 640 && yres != 400) return -EINVAL; plen = 1; pclock = &f32; /* SM124-mode is special */ par->hw.falcon.ste_mode = 1; par->hw.falcon.f_shift = 0x000; par->hw.falcon.st_shift = 0x200; left_margin = hsync_len = 128 / plen; right_margin = 0; /* TODO set all margins */ } else if (mon_type == F_MON_SC || mon_type == F_MON_TV) { plen = 2 * xstretch; pclock = &f32; hsync_len = 150 / plen; if (yres > 240) interlace = 1; /* TODO set margins */ } else #endif { /* F_MON_VGA */ if (bpp == 16) xstretch = 2; /* hicolor only double pixel width */ if (use_default_timing) { int linesize; /* Choose master pixelclock depending on hor. timing */ plen = 1 * xstretch; if ((plen * xres + f25.right+f25.hsync+f25.left) * hfmin < f25.f) pclock = &f25; else if ((plen * xres + f32.right+f32.hsync+f32.left) * hfmin < f32.f) pclock = &f32; else if ((plen * xres + fext.right+fext.hsync+fext.left) * hfmin < fext.f && fext.f) pclock = &fext; else return -EINVAL; left_margin = pclock->left / plen; right_margin = pclock->right / plen; hsync_len = pclock->hsync / plen; linesize = left_margin + xres + right_margin + hsync_len; upper_margin = 31; lower_margin = 11; vsync_len = 3; } else { #if 0 /* TODO enable this (untested yet) */ /* Round down pixelclock */ int i; unsigned long pcl=0; for (i=1; i<=4; i*=2) { if (f25.t*i<=var->pixclock && pcl<f25.t*i) { pcl=f25.t*i; pclock=&f25; } if (f32.t*i<=var->pixclock && pcl<f32.t*i) { pcl=f32.t*i; pclock=&f32; } if (fext.t && fext.t*i<=var->pixclock && pcl<fext.t*i) { pcl=fext.t*i; pclock=&fext; } } if (!pcl) return -EINVAL; plen = pcl / pclock->t; #else if (var->pixclock == f25.t || var->pixclock == 2*f25.t) pclock = &f25; else if (var->pixclock == f32.t || var->pixclock == 2*f32.t) pclock = &f32; else if ((var->pixclock == fext.t || var->pixclock == 2*fext.t) && fext.t) { pclock = &fext; } else return -EINVAL; plen = var->pixclock / pclock->t; #endif left_margin = var->left_margin; right_margin = var->right_margin; hsync_len = var->hsync_len; upper_margin = var->upper_margin; lower_margin = var->lower_margin; vsync_len = var->vsync_len; if (var->vmode & FB_VMODE_INTERLACED) { /* # lines in half frame */ upper_margin = (upper_margin + 1) / 2; lower_margin = (lower_margin + 1) / 2; vsync_len = (vsync_len + 1) / 2; } } if (pclock == &fext) longoffset = 1; /* VIDEL doesn't synchronize on short offset */ } /* Is video bus bandwidth (32MB/s) too low for this resolution? */ /* this is definitely wrong if bus clock != 32MHz */ if (pclock->f / plen / 8 * bpp > 32000000L) return -EINVAL; if (vsync_len < 1) vsync_len = 1; /* include sync lengths in right/lower margin for all calculations */ right_margin += hsync_len; lower_margin += vsync_len; /* ! In all calculations of margins we use # of lines in half frame * (which is a full frame in non-interlace mode), so we can switch * between interlace and non-interlace without messing around * with these. */ again: /* Set base_offset 128 and video bus width */ par->hw.falcon.vid_control = mon_type | f030_bus_width; if (!longoffset) par->hw.falcon.vid_control |= VCO_SHORTOFFS; /* base_offset 64 */ if (var->sync & FB_SYNC_HOR_HIGH_ACT) par->hw.falcon.vid_control |= VCO_HSYPOS; if (var->sync & FB_SYNC_VERT_HIGH_ACT) par->hw.falcon.vid_control |= VCO_VSYPOS; /* Pixelclock */ par->hw.falcon.vid_control |= pclock->control_mask; /* External or internal clock */ par->hw.falcon.sync = pclock->sync_mask | 0x2; /* Pixellength and prescale */ par->hw.falcon.vid_mode = (2/plen) << 2; if (doubleline) par->hw.falcon.vid_mode |= VMO_DOUBLE; if (interlace) par->hw.falcon.vid_mode |= VMO_INTER; /********************* Horizontal timing: unit = [master clock cycles] unit of hxx-registers: [master clock cycles * prescale] Hxx-registers are 9-bit wide 1 line = ((hht + 2) * 2 * prescale) clock cycles graphic output = hdb & 0x200 ? ((hht+2)*2 - hdb + hde) * prescale - hdboff + hdeoff: ( hht + 2 - hdb + hde) * prescale - hdboff + hdeoff (this must be a multiple of plen*128/bpp, on VGA pixels to the right may be cut off with a bigger right margin) start of graphics relative to start of 1st halfline = hdb & 0x200 ? (hdb - hht - 2) * prescale + hdboff : hdb * prescale + hdboff end of graphics relative to start of 1st halfline = (hde + hht + 2) * prescale + hdeoff *********************/ /* Calculate VIDEL registers */ { int hdb_off, hde_off, base_off; int gstart, gend1, gend2, align; prescale = hxx_prescale(&par->hw.falcon); base_off = par->hw.falcon.vid_control & VCO_SHORTOFFS ? 64 : 128; /* Offsets depend on video mode */ /* Offsets are in clock cycles, divide by prescale to * calculate hd[be]-registers */ if (par->hw.falcon.f_shift & 0x100) { align = 1; hde_off = 0; hdb_off = (base_off + 16 * plen) + prescale; } else { align = 128 / bpp; hde_off = ((128 / bpp + 2) * plen); if (par->hw.falcon.ste_mode) hdb_off = (64 + base_off + (128 / bpp + 2) * plen) + prescale; else hdb_off = (base_off + (128 / bpp + 18) * plen) + prescale; } gstart = (prescale/2 + plen * left_margin) / prescale; /* gend1 is for hde (gend-gstart multiple of align), shifter's xres */ gend1 = gstart + ((xres + align-1) / align)*align * plen / prescale; /* gend2 is for hbb, visible xres (rest to gend1 is cut off by hblank) */ gend2 = gstart + xres * plen / prescale; par->HHT = plen * (left_margin + xres + right_margin) / (2 * prescale) - 2; /* par->HHT = (gend2 + plen * right_margin / prescale) / 2 - 2;*/ par->HDB = gstart - hdb_off/prescale; par->HBE = gstart; if (par->HDB < 0) par->HDB += par->HHT + 2 + 0x200; par->HDE = gend1 - par->HHT - 2 - hde_off/prescale; par->HBB = gend2 - par->HHT - 2; #if 0 /* One more Videl constraint: data fetch of two lines must not overlap */ if (par->HDB & 0x200 && par->HDB & ~0x200 - par->HDE <= 5) { /* if this happens increase margins, decrease hfreq. */ } #endif if (hde_off % prescale) par->HBB++; /* compensate for non matching hde and hbb */ par->HSS = par->HHT + 2 - plen * hsync_len / prescale; if (par->HSS < par->HBB) par->HSS = par->HBB; } /* check hor. frequency */ hfreq = pclock->f / ((par->HHT+2)*prescale*2); if (hfreq > hfmax && mon_type!=F_MON_VGA) { /* ++guenther: ^^^^^^^^^^^^^^^^^^^ can't remember why I did this */ /* Too high -> enlarge margin */ left_margin += 1; right_margin += 1; goto again; } if (hfreq > hfmax || hfreq < hfmin) return -EINVAL; /* Vxx-registers */ /* All Vxx must be odd in non-interlace, since frame starts in the middle * of the first displayed line! * One frame consists of VFT+1 half lines. VFT+1 must be even in * non-interlace, odd in interlace mode for synchronisation. * Vxx-registers are 11-bit wide */ par->VBE = (upper_margin * 2 + 1); /* must begin on odd halfline */ par->VDB = par->VBE; par->VDE = yres; if (!interlace) par->VDE <<= 1; if (doubleline) par->VDE <<= 1; /* VDE now half lines per (half-)frame */ par->VDE += par->VDB; par->VBB = par->VDE; par->VFT = par->VBB + (lower_margin * 2 - 1) - 1; par->VSS = par->VFT+1 - (vsync_len * 2 - 1); /* vbb,vss,vft must be even in interlace mode */ if (interlace) { par->VBB++; par->VSS++; par->VFT++; } /* V-frequency check, hope I didn't create any loop here. */ /* Interlace and doubleline are mutually exclusive. */ vfreq = (hfreq * 2) / (par->VFT + 1); if (vfreq > vfmax && !doubleline && !interlace) { /* Too high -> try again with doubleline */ doubleline = 1; goto again; } else if (vfreq < vfmin && !interlace && !doubleline) { /* Too low -> try again with interlace */ interlace = 1; goto again; } else if (vfreq < vfmin && doubleline) { /* Doubleline too low -> clear doubleline and enlarge margins */ int lines; doubleline = 0; for (lines=0; (hfreq*2)/(par->VFT+1+4*lines-2*yres)>vfmax; lines++) ; upper_margin += lines; lower_margin += lines; goto again; } else if (vfreq > vfmax && interlace) { /* Interlace, too high -> enlarge margins */ int lines; for (lines=0; (hfreq*2)/(par->VFT+1+4*lines)>vfmax; lines++) ; upper_margin += lines; lower_margin += lines; goto again; } else if (vfreq < vfmin || vfreq > vfmax) return -EINVAL; set_screen_base: linelen = xres_virtual * bpp / 8; if ((var->yoffset + yres)*linelen > screen_len && screen_len) return -EINVAL; if (var->yres_virtual * linelen > screen_len && screen_len) return -EINVAL; if (var->yres * linelen > screen_len && screen_len) return -EINVAL; par->vyres = yres_virtual; par->screen_base = screen_base + var->yoffset * linelen; par->hw.falcon.xoffset = 0; return 0; } static int falcon_encode_var( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { /* !!! only for VGA !!! */ int linelen, i; int prescale, plen; int hdb_off, hde_off, base_off; struct falcon_hw *hw = &par->hw.falcon; /* possible frequencies: 25.175 or 32MHz */ var->pixclock = hw->sync & 0x1 ? fext.t : hw->vid_control & VCO_CLOCK25 ? f25.t : f32.t; var->height=-1; var->width=-1; var->sync=0; if (hw->vid_control & VCO_HSYPOS) var->sync |= FB_SYNC_HOR_HIGH_ACT; if (hw->vid_control & VCO_VSYPOS) var->sync |= FB_SYNC_VERT_HIGH_ACT; var->vmode = FB_VMODE_NONINTERLACED; if (hw->vid_mode & VMO_INTER) var->vmode |= FB_VMODE_INTERLACED; if (hw->vid_mode & VMO_DOUBLE) var->vmode |= FB_VMODE_DOUBLE; /* visible y resolution: * Graphics display starts at line VDB and ends at line * VDE. If interlace mode off unit of VC-registers is * half lines, else lines. */ var->yres = hw->vde - hw->vdb; if (!(var->vmode & FB_VMODE_INTERLACED)) var->yres >>= 1; if (var->vmode & FB_VMODE_DOUBLE) var->yres >>= 1; /* to get bpp, we must examine f_shift and st_shift. * f_shift is valid if any of bits no. 10, 8 or 4 * is set. Priority in f_shift is: 10 ">" 8 ">" 4, i.e. * if bit 10 set then bit 8 and bit 4 don't care... * If all these bits are 0 get display depth from st_shift * (as for ST and STE) */ if (hw->f_shift & 0x400) /* 2 colors */ var->bits_per_pixel = 1; else if (hw->f_shift & 0x100) /* hicolor */ var->bits_per_pixel = 16; else if (hw->f_shift & 0x010) /* 8 bitplanes */ var->bits_per_pixel = 8; else if (hw->st_shift == 0) var->bits_per_pixel = 4; else if (hw->st_shift == 0x100) var->bits_per_pixel = 2; else /* if (hw->st_shift == 0x200) */ var->bits_per_pixel = 1; var->xres = hw->line_width * 16 / var->bits_per_pixel; var->xres_virtual = var->xres + hw->line_offset * 16 / var->bits_per_pixel; if (hw->xoffset) var->xres_virtual += 16; if (var->bits_per_pixel == 16) { var->red.offset=11; var->red.length=5; var->red.msb_right=0; var->green.offset=5; var->green.length=6; var->green.msb_right=0; var->blue.offset=0; var->blue.length=5; var->blue.msb_right=0; } else { var->red.offset=0; var->red.length = hw->ste_mode ? 4 : 6; var->red.msb_right=0; var->grayscale=0; var->blue=var->green=var->red; } var->transp.offset=0; var->transp.length=0; var->transp.msb_right=0; linelen = var->xres_virtual * var->bits_per_pixel / 8; if (screen_len) if (par->vyres) var->yres_virtual = par->vyres; else var->yres_virtual=screen_len/linelen; else { if (hwscroll < 0) var->yres_virtual = 2 * var->yres; else var->yres_virtual=var->yres+hwscroll * 16; } var->xoffset=0; /* TODO change this */ /* hdX-offsets */ prescale = hxx_prescale(hw); plen = 4 >> (hw->vid_mode >> 2 & 0x3); base_off = hw->vid_control & VCO_SHORTOFFS ? 64 : 128; if (hw->f_shift & 0x100) { hde_off = 0; hdb_off = (base_off + 16 * plen) + prescale; } else { hde_off = ((128 / var->bits_per_pixel + 2) * plen); if (hw->ste_mode) hdb_off = (64 + base_off + (128 / var->bits_per_pixel + 2) * plen) + prescale; else hdb_off = (base_off + (128 / var->bits_per_pixel + 18) * plen) + prescale; } /* Right margin includes hsync */ var->left_margin = hdb_off + prescale * ((hw->hdb & 0x1ff) - (hw->hdb & 0x200 ? 2+hw->hht : 0)); if (hw->ste_mode || mon_type!=F_MON_VGA) var->right_margin = prescale * (hw->hht + 2 - hw->hde) - hde_off; else /* can't use this in ste_mode, because hbb is +1 off */ var->right_margin = prescale * (hw->hht + 2 - hw->hbb); var->hsync_len = prescale * (hw->hht + 2 - hw->hss); /* Lower margin includes vsync */ var->upper_margin = hw->vdb / 2 ; /* round down to full lines */ var->lower_margin = (hw->vft+1 - hw->vde + 1) / 2; /* round up */ var->vsync_len = (hw->vft+1 - hw->vss + 1) / 2; /* round up */ if (var->vmode & FB_VMODE_INTERLACED) { var->upper_margin *= 2; var->lower_margin *= 2; var->vsync_len *= 2; } var->pixclock *= plen; var->left_margin /= plen; var->right_margin /= plen; var->hsync_len /= plen; var->right_margin -= var->hsync_len; var->lower_margin -= var->vsync_len; if (screen_base) var->yoffset=(par->screen_base - screen_base)/linelen; else var->yoffset=0; var->nonstd=0; /* what is this for? */ var->activate=0; for (i=0; i<arraysize(var->reserved); i++) var->reserved[i]=0; return 0; } static int f_change_mode = 0; static struct falcon_hw f_new_mode; static int f_pan_display = 0; static void falcon_get_par( struct atari_fb_par *par ) { unsigned long addr; struct falcon_hw *hw = &par->hw.falcon; hw->line_width = shifter_f030.scn_width; hw->line_offset = shifter_f030.off_next; hw->st_shift = videl.st_shift & 0x300; hw->f_shift = videl.f_shift; hw->vid_control = videl.control; hw->vid_mode = videl.mode; hw->sync = shifter.syncmode & 0x1; hw->xoffset = videl.xoffset & 0xf; hw->hht = videl.hht; hw->hbb = videl.hbb; hw->hbe = videl.hbe; hw->hdb = videl.hdb; hw->hde = videl.hde; hw->hss = videl.hss; hw->vft = videl.vft; hw->vbb = videl.vbb; hw->vbe = videl.vbe; hw->vdb = videl.vdb; hw->vde = videl.vde; hw->vss = videl.vss; addr = (shifter.bas_hi & 0xff) << 16 | (shifter.bas_md & 0xff) << 8 | (shifter.bas_lo & 0xff); par->screen_base = PTOV(addr); /* derived parameters */ hw->ste_mode = (hw->f_shift & 0x510)==0 && hw->st_shift==0x100; hw->mono = (hw->f_shift & 0x400) || ((hw->f_shift & 0x510)==0 && hw->st_shift==0x200); } static void falcon_set_par( struct atari_fb_par *par ) { f_change_mode = 0; /* only set screen_base if really necessary */ if (current_par.screen_base != par->screen_base) fbhw->set_screen_base(par->screen_base); /* Don't touch any other registers if we keep the default resolution */ if (DontCalcRes) return; /* Tell vbl-handler to change video mode. * We change modes only on next VBL, to avoid desynchronisation * (a shift to the right and wrap around by a random number of pixels * in all monochrome modes). * This seems to work on my Falcon. */ f_new_mode = par->hw.falcon; f_change_mode = 1; } static void falcon_vbl_switcher( int irq, struct pt_regs *fp, void *dummy ) { struct falcon_hw *hw = &f_new_mode; if (f_change_mode) { f_change_mode = 0; if (hw->sync & 0x1) { /* Enable external pixelclock. This code only for ScreenWonder */ *(volatile unsigned short*)0xffff9202 = 0xffbf; } else { /* Turn off external clocks. Read sets all output bits to 1. */ *(volatile unsigned short*)0xffff9202; } shifter.syncmode = hw->sync; videl.hht = hw->hht; videl.hbb = hw->hbb; videl.hbe = hw->hbe; videl.hdb = hw->hdb; videl.hde = hw->hde; videl.hss = hw->hss; videl.vft = hw->vft; videl.vbb = hw->vbb; videl.vbe = hw->vbe; videl.vdb = hw->vdb; videl.vde = hw->vde; videl.vss = hw->vss; /*f030_sreg[2] = 0;*/ videl.f_shift = 0; /* write enables Falcon palette, 0: 4 planes */ if (hw->ste_mode) { videl.st_shift = hw->st_shift; /* write enables STE palette */ } else { /* IMPORTANT: * set st_shift 0, so we can tell the screen-depth if f_shift==0. * Writing 0 to f_shift enables 4 plane Falcon mode but * doesn't set st_shift. st_shift!=0 (!=4planes) is impossible * with Falcon palette. */ videl.st_shift = 0; /* now back to Falcon palette mode */ videl.f_shift = hw->f_shift; } /* writing to st_shift changed scn_width and vid_mode */ videl.xoffset = hw->xoffset; shifter_f030.scn_width = hw->line_width; shifter_f030.off_next = hw->line_offset; videl.control = hw->vid_control; videl.mode = hw->vid_mode; } if (f_pan_display) { f_pan_display = 0; videl.xoffset = current_par.hw.falcon.xoffset; shifter_f030.off_next = current_par.hw.falcon.line_offset; } } static int falcon_pan_display( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { int xoffset; if (disp[currcon].var.bits_per_pixel == 1) var->xoffset = up(var->xoffset, 32); par->hw.falcon.xoffset = var->xoffset & 15; par->hw.falcon.line_offset = disp[currcon].var.bits_per_pixel * (disp[currcon].var.xres_virtual - disp[currcon].var.xres) / 16; if (par->hw.falcon.xoffset) par->hw.falcon.line_offset -= disp[currcon].var.bits_per_pixel; xoffset = var->xoffset - par->hw.falcon.xoffset; par->screen_base = screen_base + (var->yoffset * disp[currcon].var.xres_virtual + xoffset) * disp[currcon].var.bits_per_pixel / 8; if (fbhw->set_screen_base) fbhw->set_screen_base (par->screen_base); else return -EINVAL; /* shouldn't happen */ f_pan_display = 1; return 0; } static int falcon_getcolreg( unsigned regno, unsigned *red, unsigned *green, unsigned *blue, unsigned *transp ) { unsigned long col; if (regno > 255) return 1; /* This works in STE-mode (with 4bit/color) since f030_col-registers * hold up to 6bit/color. * Even with hicolor r/g/b=5/6/5 bit! */ col = f030_col[regno]; *red = (col >> 26) & 0x3f; *green = (col >> 18) & 0x3f; *blue = (col >> 2) & 0x3f; *transp = 0; return 0; } static int falcon_setcolreg( unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp ) { if (regno > 255) return 1; f030_col[regno] = (red << 26) | (green << 18) | (blue << 2); if (regno < 16) { shifter_tt.color_reg[regno] = (((red & 0xe) >> 1) | ((red & 1) << 3) << 8) | (((green & 0xe) >> 1) | ((green & 1) << 3) << 4) | ((blue & 0xe) >> 1) | ((blue & 1) << 3); packed16_cmap[regno] = (red << 11) | (green << 5) | blue; } return 0; } static int falcon_blank( int blank_mode ) { /* ++guenther: we can switch off graphics by changing VDB and VDE, * so VIDEL doesn't hog the bus while saving. * (this affects usleep()). */ if (mon_type == F_MON_SM) /* this doesn't work on SM124 */ return 1; if (blank_mode) { /* disable graphics output (this speeds up the CPU) ... */ videl.vdb = current_par.VFT + 1; /* ... and blank all lines */ videl.hbe = current_par.HHT + 2; /* VESA suspend mode, switch off HSYNC */ if (pwrsave && mon_type == F_MON_VGA) videl.hss = current_par.HHT + 2; } else { videl.vdb = current_par.VDB; videl.hbe = current_par.HBE; videl.hss = current_par.HSS; } return 0; } static int falcon_detect( void ) { struct atari_fb_par par; unsigned char fhw; /* Determine connected monitor and set monitor parameters */ fhw = *(unsigned char*)0xffff8006; mon_type = fhw >> 6 & 0x3; /* bit 1 of fhw: 1=32 bit ram bus, 0=16 bit */ f030_bus_width = fhw << 6 & 0x80; switch (mon_type) { case F_MON_SM: vfmin = 70; vfmax = 72; hfmin = 35713; hfmax = 35715; break; case F_MON_SC: case F_MON_TV: vfmin = 50; vfmax = 60; hfmin = 15624; hfmax = 15626; break; } /* initialize hsync-len */ f25.hsync = h_syncs[mon_type] / f25.t; f32.hsync = h_syncs[mon_type] / f32.t; if (fext.t) fext.hsync = h_syncs[mon_type] / fext.t; falcon_get_par(&par); falcon_encode_var(&atari_fb_predefined[0], &par); /* Detected mode is always the "autodetect" slot */ return 1; } #endif /* ATAFB_FALCON */ /* ------------------- ST(E) specific functions ---------------------- */ #ifdef ATAFB_STE static int stste_encode_fix( struct fb_fix_screeninfo *fix, struct atari_fb_par *par ) { int mode, i; strcpy(fix->id,"Atari Builtin"); fix->smem_start=real_screen_base; fix->smem_len=screen_len; fix->type=FB_TYPE_INTERLEAVED_PLANES; fix->type_aux=2; fix->visual=FB_VISUAL_PSEUDOCOLOR; mode = par->hw.st.mode & 3; if (mode == ST_HIGH) { fix->type=FB_TYPE_PACKED_PIXELS; fix->type_aux=0; fix->visual=FB_VISUAL_MONO10; } fix->xpanstep = 0; if (ATARIHW_PRESENT(EXTD_SHIFTER)) fix->ypanstep = 1; else fix->ypanstep = 0; fix->ywrapstep = 0; fix->line_length = 0; for (i=0; i<arraysize(fix->reserved); i++) fix->reserved[i]=0; return 0; } static int stste_decode_var( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { int xres=var->xres; int yres=var->yres; int bpp=var->bits_per_pixel; int linelen; if (mono_moni) { if (bpp > 1 || xres > sttt_xres || yres > st_yres) return -EINVAL; par->hw.st.mode=ST_HIGH; xres=sttt_xres; yres=st_yres; bpp=1; } else { if (bpp > 4 || xres > sttt_xres || yres > st_yres) return -EINVAL; if (bpp > 2) { if (xres > sttt_xres/2 || yres > st_yres/2) return -EINVAL; par->hw.st.mode=ST_LOW; xres=sttt_xres/2; yres=st_yres/2; bpp=4; } else if (bpp > 1) { if (xres > sttt_xres || yres > st_yres/2) return -EINVAL; par->hw.st.mode=ST_MID; xres=sttt_xres; yres=st_yres/2; bpp=2; } else return -EINVAL; } if (var->sync & FB_SYNC_EXT) par->hw.st.sync=(par->hw.st.sync & ~1) | 1; else par->hw.st.sync=(par->hw.st.sync & ~1); linelen=xres*bpp/8; if ((var->yoffset + yres)*linelen > screen_len && screen_len) return -EINVAL; par->screen_base=screen_base+ var->yoffset*linelen; return 0; } static int stste_encode_var( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { int linelen, i; var->red.offset=0; var->red.length = ATARIHW_PRESENT(EXTD_SHIFTER) ? 4 : 3; var->red.msb_right=0; var->grayscale=0; var->pixclock=31041; var->left_margin=120; /* these are incorrect */ var->right_margin=100; var->upper_margin=8; var->lower_margin=16; var->hsync_len=140; var->vsync_len=30; var->height=-1; var->width=-1; if (!(par->hw.st.sync & 1)) var->sync=0; else var->sync=FB_SYNC_EXT; switch (par->hw.st.mode & 3) { case ST_LOW: var->xres=sttt_xres/2; var->yres=st_yres/2; var->bits_per_pixel=4; break; case ST_MID: var->xres=sttt_xres; var->yres=st_yres/2; var->bits_per_pixel=2; break; case ST_HIGH: var->xres=sttt_xres; var->yres=st_yres; var->bits_per_pixel=1; break; } var->blue=var->green=var->red; var->transp.offset=0; var->transp.length=0; var->transp.msb_right=0; var->xres_virtual=sttt_xres_virtual; linelen=var->xres_virtual * var->bits_per_pixel / 8; ovsc_addlen=linelen*(sttt_yres_virtual - st_yres); if (! use_hwscroll) var->yres_virtual=var->yres; else if (screen_len) var->yres_virtual=screen_len/linelen; else { if (hwscroll < 0) var->yres_virtual = 2 * var->yres; else var->yres_virtual=var->yres+hwscroll * 16; } var->xoffset=0; if (screen_base) var->yoffset=(par->screen_base - screen_base)/linelen; else var->yoffset=0; var->nonstd=0; var->activate=0; var->vmode=FB_VMODE_NONINTERLACED; for (i=0; i<arraysize(var->reserved); i++) var->reserved[i]=0; return 0; } static void stste_get_par( struct atari_fb_par *par ) { unsigned long addr; par->hw.st.mode=shifter_tt.st_shiftmode; par->hw.st.sync=shifter.syncmode; addr = ((shifter.bas_hi & 0xff) << 16) | ((shifter.bas_md & 0xff) << 8); if (ATARIHW_PRESENT(EXTD_SHIFTER)) addr |= (shifter.bas_lo & 0xff); par->screen_base = PTOV(addr); } static void stste_set_par( struct atari_fb_par *par ) { shifter_tt.st_shiftmode=par->hw.st.mode; shifter.syncmode=par->hw.st.sync; /* only set screen_base if really necessary */ if (current_par.screen_base != par->screen_base) fbhw->set_screen_base(par->screen_base); } static int stste_getcolreg( unsigned regno, unsigned *red, unsigned *green, unsigned *blue, unsigned *transp ) { unsigned col; if (regno > 15) return 1; col = shifter_tt.color_reg[regno]; if (ATARIHW_PRESENT(EXTD_SHIFTER)) { *red = ((col >> 7) & 0xe) | ((col >> 11) & 1); *green = ((col >> 3) & 0xe) | ((col >> 7) & 1); *blue = ((col << 1) & 0xe) | ((col >> 3) & 1); } else { *red = (col >> 8) & 0x7; *green = (col >> 4) & 0x7; *blue = col & 0x7; } *transp = 0; return 0; } static int stste_setcolreg( unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp ) { if (regno > 15) return 1; if (ATARIHW_PRESENT(EXTD_SHIFTER)) shifter_tt.color_reg[regno] = (((red & 0xe) >> 1) | ((red & 1) << 3) << 8) | (((green & 0xe) >> 1) | ((green & 1) << 3) << 4) | ((blue & 0xe) >> 1) | ((blue & 1) << 3); else shifter_tt.color_reg[regno] = ((red & 0x7) << 8) | ((green & 0x7) << 4) | (blue & 0x7); return 0; } static int stste_detect( void ) { struct atari_fb_par par; /* Determine the connected monitor: The DMA sound must be * disabled before reading the MFP GPIP, because the Sound * Done Signal and the Monochrome Detect are XORed together! */ if (ATARIHW_PRESENT(PCM_8BIT)) { tt_dmasnd.ctrl = DMASND_CTRL_OFF; udelay(20); /* wait a while for things to settle down */ } mono_moni = (mfp.par_dt_reg & 0x80) == 0; stste_get_par(&par); stste_encode_var(&atari_fb_predefined[0], &par); if (!ATARIHW_PRESENT(EXTD_SHIFTER)) use_hwscroll = 0; return 1; } static void stste_set_screen_base(unsigned long s_base) { unsigned long addr; addr= VTOP(s_base); /* Setup Screen Memory */ shifter.bas_hi=(unsigned char) ((addr & 0xff0000) >> 16); shifter.bas_md=(unsigned char) ((addr & 0x00ff00) >> 8); if (ATARIHW_PRESENT(EXTD_SHIFTER)) shifter.bas_lo=(unsigned char) (addr & 0x0000ff); } #endif /* ATAFB_STE */ /* Switching the screen size should be done during vsync, otherwise * the margins may get messed up. This is a well known problem of * the ST's video system. * * Unfortunately there is hardly any way to find the vsync, as the * vertical blank interrupt is no longer in time on machines with * overscan type modifications. * * We can, however, use Timer B to safely detect the black shoulder, * but then we've got to guess an appropriate delay to find the vsync. * This might not work on every machine. * * martin_rogge @ ki.maus.de, 8th Aug 1995 */ #define LINE_DELAY (mono_moni ? 30 : 70) #define SYNC_DELAY (mono_moni ? 1500 : 2000) /* SWITCH_ACIA may be used for Falcon (ScreenBlaster III internal!) */ static void st_ovsc_switch(int switchmode) { unsigned long flags; register unsigned char old, new; if ((switchmode & (SWITCH_ACIA | SWITCH_SND6 | SWITCH_SND7)) == 0) return; save_flags(flags); cli(); mfp.tim_ct_b = 0x10; mfp.active_edge |= 8; mfp.tim_ct_b = 0; mfp.tim_dt_b = 0xf0; mfp.tim_ct_b = 8; while (mfp.tim_dt_b > 1) /* TOS does it this way, don't ask why */ ; new = mfp.tim_dt_b; do { udelay(LINE_DELAY); old = new; new = mfp.tim_dt_b; } while (old != new); mfp.tim_ct_b = 0x10; udelay(SYNC_DELAY); if (switchmode == SWITCH_ACIA) acia.key_ctrl = (ACIA_DIV64|ACIA_D8N1S|ACIA_RHTID|ACIA_RIE); else { sound_ym.rd_data_reg_sel = 14; sound_ym.wd_data = sound_ym.rd_data_reg_sel | switchmode; } restore_flags(flags); } /* ------------------- External Video ---------------------- */ #ifdef ATAFB_EXT static int ext_encode_fix( struct fb_fix_screeninfo *fix, struct atari_fb_par *par ) { int i; strcpy(fix->id,"Unknown Extern"); fix->smem_start=external_addr; fix->smem_len=(external_len + PAGE_SIZE -1) & PAGE_MASK; if (external_depth == 1) { fix->type = FB_TYPE_PACKED_PIXELS; /* The letters 'n' and 'i' in the "atavideo=external:" stand * for "normal" and "inverted", rsp., in the monochrome case */ fix->visual = (external_pmode == FB_TYPE_INTERLEAVED_PLANES || external_pmode == FB_TYPE_PACKED_PIXELS) ? FB_VISUAL_MONO10 : FB_VISUAL_MONO01; } else { switch (external_pmode) { /* All visuals are STATIC, because we don't know how to change * colors :-( */ case -1: /* truecolor */ fix->type=FB_TYPE_PACKED_PIXELS; fix->visual=FB_VISUAL_TRUECOLOR; break; case FB_TYPE_PACKED_PIXELS: fix->type=FB_TYPE_PACKED_PIXELS; fix->visual=FB_VISUAL_STATIC_PSEUDOCOLOR; break; case FB_TYPE_PLANES: fix->type=FB_TYPE_PLANES; fix->visual=FB_VISUAL_STATIC_PSEUDOCOLOR; break; case FB_TYPE_INTERLEAVED_PLANES: fix->type=FB_TYPE_INTERLEAVED_PLANES; fix->type_aux=2; fix->visual=FB_VISUAL_STATIC_PSEUDOCOLOR; break; } } fix->xpanstep = 0; fix->ypanstep = 0; fix->ywrapstep = 0; fix->line_length = 0; for (i=0; i<arraysize(fix->reserved); i++) fix->reserved[i]=0; return 0; } static int ext_decode_var( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { struct fb_var_screeninfo *myvar = &atari_fb_predefined[0]; if (var->bits_per_pixel > myvar->bits_per_pixel || var->xres > myvar->xres || var->yres > myvar->yres || var->xoffset > 0 || var->yoffset > 0) return -EINVAL; return 0; } static int ext_encode_var( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { int i; var->red.offset=0; var->red.length=(external_pmode == -1) ? external_depth/3 : (external_vgaiobase ? external_bitspercol : 0); var->red.msb_right=0; var->grayscale=0; var->pixclock=31041; var->left_margin=120; /* these are surely incorrect */ var->right_margin=100; var->upper_margin=8; var->lower_margin=16; var->hsync_len=140; var->vsync_len=30; var->height=-1; var->width=-1; var->sync=0; var->xres = external_xres; var->yres = external_yres; var->bits_per_pixel = external_depth; var->blue=var->green=var->red; var->transp.offset=0; var->transp.length=0; var->transp.msb_right=0; var->xres_virtual=var->xres; var->yres_virtual=var->yres; var->xoffset=0; var->yoffset=0; var->nonstd=0; var->activate=0; var->vmode=FB_VMODE_NONINTERLACED; for (i=0; i<arraysize(var->reserved); i++) var->reserved[i]=0; return 0; } static void ext_get_par( struct atari_fb_par *par ) { par->screen_base = external_addr; } static void ext_set_par( struct atari_fb_par *par ) { } #define OUTB(port,val) \ *((unsigned volatile char *) ((port)+external_vgaiobase))=(val) #define INB(port) \ (*((unsigned volatile char *) ((port)+external_vgaiobase))) #define DACDelay \ do { \ unsigned char tmp=INB(0x3da); \ tmp=INB(0x3da); \ } while (0) static int ext_getcolreg( unsigned regno, unsigned *red, unsigned *green, unsigned *blue, unsigned *transp ) { unsigned char colmask = (1 << external_bitspercol) - 1; if (! external_vgaiobase) return 1; switch (external_card_type) { case IS_VGA: OUTB(0x3c7, regno); DACDelay; *red=INB(0x3c9) & colmask; DACDelay; *green=INB(0x3c9) & colmask; DACDelay; *blue=INB(0x3c9) & colmask; DACDelay; return 0; case IS_MV300: *red = MV300_color[regno].red; *green = MV300_color[regno].green; *blue = MV300_color[regno].blue; *transp=0; return 0; default: return 1; } } static int ext_setcolreg( unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp ) { unsigned char colmask = (1 << external_bitspercol) - 1; if (! external_vgaiobase) return 1; switch (external_card_type) { case IS_VGA: OUTB(0x3c8, regno); DACDelay; OUTB(0x3c9, red & colmask); DACDelay; OUTB(0x3c9, green & colmask); DACDelay; OUTB(0x3c9, blue & colmask); DACDelay; return 0; case IS_MV300: MV300_color[regno].red = red; MV300_color[regno].green = green; MV300_color[regno].blue = blue; OUTB((MV300_reg[regno] << 2)+1, red); OUTB((MV300_reg[regno] << 2)+1, green); OUTB((MV300_reg[regno] << 2)+1, blue); return 0; default: return 1; } } static int ext_detect( void ) { struct fb_var_screeninfo *myvar = &atari_fb_predefined[0]; struct atari_fb_par dummy_par; myvar->xres = external_xres; myvar->yres = external_yres; myvar->bits_per_pixel = external_depth; ext_encode_var(myvar, &dummy_par); return 1; } #endif /* ATAFB_EXT */ /* ------ This is the same for most hardware types -------- */ static void set_screen_base(unsigned long s_base) { unsigned long addr; addr= VTOP(s_base); /* Setup Screen Memory */ shifter.bas_hi=(unsigned char) ((addr & 0xff0000) >> 16); shifter.bas_md=(unsigned char) ((addr & 0x00ff00) >> 8); shifter.bas_lo=(unsigned char) (addr & 0x0000ff); } static int pan_display( struct fb_var_screeninfo *var, struct atari_fb_par *par ) { if (var->xoffset) return -EINVAL; par->screen_base = screen_base + (var->yoffset * disp[currcon].var.xres_virtual * disp[currcon].var.bits_per_pixel / 8); if (fbhw->set_screen_base) fbhw->set_screen_base (par->screen_base); else return -EINVAL; return 0; } /* ------------ Interfaces to hardware functions ------------ */ #ifdef ATAFB_TT struct fb_hwswitch tt_switch = { tt_detect, tt_encode_fix, tt_decode_var, tt_encode_var, tt_get_par, tt_set_par, tt_getcolreg, tt_setcolreg, set_screen_base, NULL, pan_display }; #endif #ifdef ATAFB_FALCON struct fb_hwswitch falcon_switch = { falcon_detect, falcon_encode_fix, falcon_decode_var, falcon_encode_var, falcon_get_par, falcon_set_par, falcon_getcolreg, falcon_setcolreg, set_screen_base, falcon_blank, falcon_pan_display }; #endif #ifdef ATAFB_STE struct fb_hwswitch st_switch = { stste_detect, stste_encode_fix, stste_decode_var, stste_encode_var, stste_get_par, stste_set_par, stste_getcolreg, stste_setcolreg, stste_set_screen_base, NULL, pan_display }; #endif #ifdef ATAFB_EXT struct fb_hwswitch ext_switch = { ext_detect, ext_encode_fix, ext_decode_var, ext_encode_var, ext_get_par, ext_set_par, ext_getcolreg, ext_setcolreg, NULL, NULL, NULL }; #endif static void atari_fb_get_par( struct atari_fb_par *par ) { if (current_par_valid) { *par=current_par; } else fbhw->get_par(par); } static void atari_fb_set_par( struct atari_fb_par *par ) { fbhw->set_par(par); current_par=*par; current_par_valid=1; } /* =========================================================== */ /* ============== Hardware Independent Functions ============= */ /* =========================================================== */ /* used for hardware scrolling */ static int fb_update_var(int con) { int off=disp[con].var.yoffset*disp[con].var.xres_virtual* disp[con].var.bits_per_pixel>>3; current_par.screen_base=screen_base + off; if (fbhw->set_screen_base) fbhw->set_screen_base(current_par.screen_base); return 0; } static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive) { int err,activate; struct atari_fb_par par; if ((err=fbhw->decode_var(var, &par))) return err; activate=var->activate; if (((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) && isactive) atari_fb_set_par(&par); fbhw->encode_var(var, &par); var->activate=activate; return 0; } /* Functions for handling colormap */ /* there seems to be a bug in gcc 2.5.8 which inhibits using an other solution */ /* I always get a sigsegv */ static short red16[]= { 0x0000,0x0000,0x0000,0x0000,0xc000,0xc000,0xc000,0xc000, 0x8000,0x0000,0x0000,0x0000,0xffff,0xffff,0xffff,0xffff}; static short green16[]= { 0x0000,0x0000,0xc000,0xc000,0x0000,0x0000,0xc000,0xc000, 0x8000,0x0000,0xffff,0xffff,0x0000,0x0000,0xffff,0xffff}; static short blue16[]= { 0x0000,0xc000,0x0000,0xc000,0x0000,0xc000,0x0000,0xc000, 0x8000,0xffff,0x0000,0xffff,0x0000,0xffff,0x0000,0xffff}; static short red4[]= { 0x0000,0xc000,0x8000,0xffff}; static short green4[]= { 0x0000,0xc000,0x8000,0xffff}; static short blue4[]= { 0x0000,0xc000,0x8000,0xffff}; static short red2[]= { 0x0000,0xffff}; static short green2[]= { 0x0000,0xffff}; static short blue2[]= { 0x0000,0xffff}; struct fb_cmap default_16_colors = { 0, 16, red16, green16, blue16, NULL }; struct fb_cmap default_4_colors = { 0, 4, red4, green4, blue4, NULL }; struct fb_cmap default_2_colors = { 0, 2, red2, green2, blue2, NULL }; static struct fb_cmap * get_default_colormap(int bpp) { if (bpp == 1) return &default_2_colors; if (bpp == 2) return &default_4_colors; return &default_16_colors; } #define CNVT_TOHW(val,width) (((val) << (width)) + 0x7fff - (val)) >> 16 #define CNVT_FROMHW(val,width) ((width)?((((val) << 16) - (val)) / ((1<<(width))-1)):0) static int do_fb_get_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var, int kspc) { int i,start; unsigned short *red,*green,*blue,*transp; unsigned int hred,hgreen,hblue,htransp; red=cmap->red; green=cmap->green; blue=cmap->blue; transp=cmap->transp; start=cmap->start; if (start < 0) return EINVAL; for (i=0 ; i < cmap->len ; i++) { if (fbhw->getcolreg(start++, &hred, &hgreen, &hblue, &htransp)) return 0; hred=CNVT_FROMHW(hred,var->red.length); hgreen=CNVT_FROMHW(hgreen,var->green.length); hblue=CNVT_FROMHW(hblue,var->blue.length); htransp=CNVT_FROMHW(htransp,var->transp.length); if (kspc) { *red=hred; *green=hgreen; *blue=hblue; if (transp) *transp=htransp; } else { put_fs_word(hred, red); put_fs_word(hgreen, green); put_fs_word(hblue, blue); if (transp) put_fs_word(htransp, transp); } red++; green++; blue++; if (transp) transp++; } return 0; } static int do_fb_set_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var, int kspc) { int i,start; unsigned short *red,*green,*blue,*transp; unsigned int hred,hgreen,hblue,htransp; red=cmap->red; green=cmap->green; blue=cmap->blue; transp=cmap->transp; start=cmap->start; if (start < 0) return -EINVAL; for (i=0 ; i < cmap->len ; i++) { if (kspc) { hred=*red; hgreen=*green; hblue=*blue; htransp=(transp) ? *transp : 0; } else { hred=get_fs_word(red); hgreen=get_fs_word(green); hblue=get_fs_word(blue); htransp=(transp)?get_fs_word(transp):0; } hred=CNVT_TOHW(hred,var->red.length); hgreen=CNVT_TOHW(hgreen,var->green.length); hblue=CNVT_TOHW(hblue,var->blue.length); htransp=CNVT_TOHW(htransp,var->transp.length); red++; green++; blue++; if (transp) transp++; if (fbhw->setcolreg(start++, hred, hgreen, hblue, htransp)) return 0; } return 0; } static void do_install_cmap(int con) { if (con != currcon) return; if (disp[con].cmap.len) do_fb_set_cmap(&disp[con].cmap, &(disp[con].var), 1); else do_fb_set_cmap(get_default_colormap( disp[con].var.bits_per_pixel), &(disp[con].var), 1); } static void memcpy_fs(int fsfromto, void *to, void *from, int len) { switch (fsfromto) { case 0: memcpy(to,from,len); return; case 1: memcpy_fromfs(to,from,len); return; case 2: memcpy_tofs(to,from,len); return; } } static void copy_cmap(struct fb_cmap *from, struct fb_cmap *to, int fsfromto) { int size; int tooff=0, fromoff=0; if (to->start > from->start) fromoff=to->start-from->start; else tooff=from->start-to->start; size=to->len-tooff; if (size > from->len-fromoff) size=from->len-fromoff; if (size < 0) return; size*=sizeof(unsigned short); memcpy_fs(fsfromto, to->red+tooff, from->red+fromoff, size); memcpy_fs(fsfromto, to->green+tooff, from->green+fromoff, size); memcpy_fs(fsfromto, to->blue+tooff, from->blue+fromoff, size); if (from->transp && to->transp) memcpy_fs(fsfromto, to->transp+tooff, from->transp+fromoff, size); } static int alloc_cmap(struct fb_cmap *cmap,int len,int transp) { int size=len*sizeof(unsigned short); if (cmap->len != len) { if (cmap->red) kfree(cmap->red); if (cmap->green) kfree(cmap->green); if (cmap->blue) kfree(cmap->blue); if (cmap->transp) kfree(cmap->transp); cmap->red=cmap->green=cmap->blue=cmap->transp=NULL; cmap->len=0; if (! len) return 0; if (! (cmap->red=kmalloc(size, GFP_ATOMIC))) return -1; if (! (cmap->green=kmalloc(size, GFP_ATOMIC))) return -1; if (! (cmap->blue=kmalloc(size, GFP_ATOMIC))) return -1; if (transp) { if (! (cmap->transp=kmalloc(size, GFP_ATOMIC))) return -1; } else cmap->transp=NULL; } cmap->start=0; cmap->len=len; copy_cmap(get_default_colormap(len), cmap, 0); return 0; } static int atari_fb_get_fix(struct fb_fix_screeninfo *fix, int con) { struct atari_fb_par par; if (con == -1) atari_fb_get_par(&par); else fbhw->decode_var(&disp[con].var,&par); return fbhw->encode_fix(fix, &par); } static int atari_fb_get_var(struct fb_var_screeninfo *var, int con) { struct atari_fb_par par; if (con == -1) { atari_fb_get_par(&par); fbhw->encode_var(var, &par); } else *var=disp[con].var; return 0; } static void atari_fb_set_disp(int con) { struct fb_fix_screeninfo fix; atari_fb_get_fix(&fix, con); if (con == -1) con=0; disp[con].screen_base = (u_char *)fix.smem_start; disp[con].visual = fix.visual; disp[con].type = fix.type; disp[con].type_aux = fix.type_aux; disp[con].ypanstep = fix.ypanstep; disp[con].ywrapstep = fix.ywrapstep; disp[con].line_length = fix.line_length; if (fix.visual != FB_VISUAL_PSEUDOCOLOR && fix.visual != FB_VISUAL_DIRECTCOLOR) disp[con].can_soft_blank = 0; else disp[con].can_soft_blank = 1; disp[con].inverse = (fix.visual == FB_VISUAL_MONO01 ? !inverse : inverse); } static int atari_fb_set_var(struct fb_var_screeninfo *var, int con) { int err,oldxres,oldyres,oldbpp,oldxres_virtual,oldyoffset; if ((err=do_fb_set_var(var, con==currcon))) return err; if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) { oldxres=disp[con].var.xres; oldyres=disp[con].var.yres; oldxres_virtual=disp[con].var.xres_virtual; oldbpp=disp[con].var.bits_per_pixel; oldyoffset=disp[con].var.yoffset; disp[con].var=*var; if (oldxres != var->xres || oldyres != var->yres || oldxres_virtual != var->xres_virtual || oldbpp != var->bits_per_pixel || oldyoffset != var->yoffset) { atari_fb_set_disp(con); (*fb_info.changevar)(con); alloc_cmap(&disp[con].cmap, 0, 0); do_install_cmap(con); } } var->activate=0; return 0; } static int atari_fb_get_cmap(struct fb_cmap *cmap, int kspc, int con) { if (con == currcon) /* current console ? */ return do_fb_get_cmap(cmap, &(disp[con].var), kspc); else if (disp[con].cmap.len) /* non default colormap ? */ copy_cmap(&disp[con].cmap, cmap, kspc ? 0 : 2); else copy_cmap(get_default_colormap( disp[con].var.bits_per_pixel), cmap, kspc ? 0 : 2); return 0; } static int atari_fb_set_cmap(struct fb_cmap *cmap, int kspc, int con) { int err; if (! disp[con].cmap.len) { /* no colormap allocated ? */ if ((err = alloc_cmap(&disp[con].cmap, 1 << disp[con].var.bits_per_pixel, 0))) return err; } if (con == currcon) /* current console ? */ return do_fb_set_cmap(cmap, &(disp[con].var), kspc); else copy_cmap(cmap, &disp[con].cmap, kspc ? 0 : 1); return 0; } static int atari_fb_pan_display(struct fb_var_screeninfo *var, int con) { int xoffset = var->xoffset; int yoffset = var->yoffset; int err; if ( xoffset < 0 || xoffset + disp[con].var.xres > disp[con].var.xres_virtual || yoffset < 0 || yoffset + disp[con].var.yres > disp[con].var.yres_virtual) return -EINVAL; if (con == currcon) { if (fbhw->pan_display) { if ((err = fbhw->pan_display(var, ¤t_par))) return err; } else return -EINVAL; } disp[con].var.xoffset = var->xoffset; disp[con].var.yoffset = var->yoffset; return 0; } static int atari_fb_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg, int con) { int i; switch (cmd) { #ifdef FBCMD_GET_CURRENTPAR case FBCMD_GET_CURRENTPAR: if ((i = verify_area(VERIFY_WRITE, (void *)arg, sizeof(struct atari_fb_par)))) return i; memcpy_tofs((void *)arg, (void *)¤t_par, sizeof(struct atari_fb_par)); return 0; #endif #ifdef FBCMD_SET_CURRENTPAR case FBCMD_SET_CURRENTPAR: if ((i = verify_area(VERIFY_READ, (void *)arg, sizeof(struct atari_fb_par)))) return i; memcpy_fromfs((void *)¤t_par, (void *)arg, sizeof(struct atari_fb_par)); atari_fb_set_par(¤t_par); return 0; #endif } return -EINVAL; } static struct fb_ops atari_fb_ops = { atari_fb_get_fix, atari_fb_get_var, atari_fb_set_var, atari_fb_get_cmap, atari_fb_set_cmap, atari_fb_pan_display, atari_fb_ioctl }; static void check_default_par( int detected_mode ) { char default_name[10]; int i; struct fb_var_screeninfo var; unsigned long min_mem; /* First try the user supplied mode */ if (default_par) { var=atari_fb_predefined[default_par-1]; var.activate = FB_ACTIVATE_TEST; if (do_fb_set_var(&var,1)) default_par=0; /* failed */ } /* Next is the autodetected one */ if (! default_par) { var=atari_fb_predefined[detected_mode-1]; /* autodetect */ var.activate = FB_ACTIVATE_TEST; if (!do_fb_set_var(&var,1)) default_par=detected_mode; } /* If that also failed, try some default modes... */ if (! default_par) { /* try default1, default2... */ for (i=1 ; i < 10 ; i++) { sprintf(default_name,"default%d",i); default_par=get_video_mode(default_name); if (! default_par) panic("can't set default video mode\n"); var=atari_fb_predefined[default_par-1]; var.activate = FB_ACTIVATE_TEST; if (! do_fb_set_var(&var,1)) break; /* ok */ } } min_mem=var.xres_virtual * var.yres_virtual * var.bits_per_pixel/8; if (default_mem_req < min_mem) default_mem_req=min_mem; } static int atafb_switch(int con) { /* Do we have to save the colormap ? */ if (disp[currcon].cmap.len) do_fb_get_cmap(&disp[currcon].cmap, &(disp[currcon].var), 1); do_fb_set_var(&disp[con].var,1); currcon=con; /* Install new colormap */ do_install_cmap(con); return 0; } static void atafb_blank(int blank) { unsigned short black[16]; struct fb_cmap cmap; if (fbhw->blank && !fbhw->blank(blank)) return; if (blank) { memset(black, 0, 16*sizeof(unsigned short)); cmap.red=black; cmap.green=black; cmap.blue=black; cmap.transp=NULL; cmap.start=0; cmap.len=16; do_fb_set_cmap(&cmap, &(disp[currcon].var), 1); } else do_install_cmap(currcon); } struct fb_info * atari_fb_init(long *mem_start) { int err; int pad; int detected_mode; unsigned long mem_req; struct fb_var_screeninfo *var; err=register_framebuffer("Atari Builtin", &node, &atari_fb_ops, num_atari_fb_predefined, atari_fb_predefined); if (err < 0) panic ("Cannot register frame buffer\n"); do { #ifdef ATAFB_EXT if (external_addr) { fbhw = &ext_switch; break; } #endif #ifdef ATAFB_TT if (ATARIHW_PRESENT(TT_SHIFTER)) { fbhw = &tt_switch; break; } #endif #ifdef ATAFB_FALCON if (ATARIHW_PRESENT(VIDEL_SHIFTER)) { fbhw = &falcon_switch; add_isr(IRQ_AUTO_4, falcon_vbl_switcher, IRQ_TYPE_PRIO, NULL, "framebuffer/modeswitch"); break; } #endif #ifdef ATAFB_STE if (ATARIHW_PRESENT(STND_SHIFTER) || ATARIHW_PRESENT(EXTD_SHIFTER)) { fbhw = &st_switch; break; } fbhw = &st_switch; printk("Cannot determine video hardware; defaulting to ST(e)\n"); #else /* ATAFB_STE */ /* no default driver included */ /* Nobody will ever see this message :-) */ panic("Cannot initialize video hardware\n"); #endif } while (0); detected_mode = fbhw->detect(); check_default_par(detected_mode); #ifdef ATAFB_EXT if (!external_addr) { #endif /* ATAFB_EXT */ mem_req = default_mem_req + ovsc_offset + ovsc_addlen; mem_req = ((mem_req + PAGE_SIZE - 1) & PAGE_MASK) + PAGE_SIZE; screen_base = (unsigned long) atari_stram_alloc(mem_req, mem_start); memset((char *) screen_base, 0, mem_req); pad = ((screen_base + PAGE_SIZE-1) & PAGE_MASK) - screen_base; screen_base+=pad; real_screen_base=screen_base+ovsc_offset; screen_len = (mem_req - pad - ovsc_offset) & PAGE_MASK; st_ovsc_switch(ovsc_switchmode); if (m68k_is040or060) { /* On a '040+, the cache mode of video RAM must be set to * write-through also for internal video hardware! */ cache_push( VTOP(screen_base), screen_len ); kernel_set_cachemode( screen_base, screen_len, KERNELMAP_NO_COPYBACK ); } #ifdef ATAFB_EXT } else { /* Map the video memory (physical address given) to somewhere * in the kernel address space. */ *mem_start = (*mem_start+PAGE_SIZE-1) & ~(PAGE_SIZE-1); external_addr = kernel_map(external_addr, external_len, KERNELMAP_NO_COPYBACK, mem_start); if (external_vgaiobase) external_vgaiobase = kernel_map(external_vgaiobase, 0x10000, KERNELMAP_NOCACHE_SER, mem_start); screen_base = real_screen_base = external_addr; screen_len = external_len & PAGE_MASK; memset ((char *) screen_base, 0, external_len); } #endif /* ATAFB_EXT */ strcpy(fb_info.modename, "Atari Builtin "); fb_info.disp=disp; fb_info.switch_con=&atafb_switch; fb_info.updatevar=&fb_update_var; fb_info.blank=&atafb_blank; var=atari_fb_predefined+default_par-1; do_fb_set_var(var,1); strcat(fb_info.modename,fb_var_names[default_par-1][0]); atari_fb_get_var(&disp[0].var, -1); atari_fb_set_disp(-1); printk("Determined %dx%d, depth %d\n", disp[0].var.xres, disp[0].var.yres, disp[0].var.bits_per_pixel ); do_install_cmap(0); return &fb_info; } /* a strtok which returns empty strings, too */ static char * strtoke(char * s,const char * ct) { char *sbegin, *send; static char *ssave = NULL; sbegin = s ? s : ssave; if (!sbegin) { return NULL; } if (*sbegin == '\0') { ssave = NULL; return NULL; } send = strpbrk(sbegin, ct); if (send && *send != '\0') *send++ = '\0'; ssave = send; return sbegin; } void atari_video_setup( char *options, int *ints ) { char *this_opt; int temp; char ext_str[80], int_str[100]; char mcap_spec[80]; char user_mode[80]; ext_str[0] = int_str[0] = mcap_spec[0] = user_mode[0] = fb_info.fontname[0] = '\0'; if (!options || !*options) return; for(this_opt=strtok(options,","); this_opt; this_opt=strtok(NULL,",")) { if (!*this_opt) continue; if ((temp=get_video_mode(this_opt))) default_par=temp; else if (! strcmp(this_opt, "inverse")) inverse=1; else if (!strncmp(this_opt, "font:", 5)) strcpy(fb_info.fontname, this_opt+5); else if (! strncmp(this_opt, "hwscroll_",9)) { hwscroll=simple_strtoul(this_opt+9, NULL, 10); if (hwscroll < 0) hwscroll = 0; if (hwscroll > 200) hwscroll = 200; } else if (! strncmp(this_opt, "sw_",3)) { if (! strcmp(this_opt+3, "acia")) ovsc_switchmode = SWITCH_ACIA; else if (! strcmp(this_opt+3, "snd6")) ovsc_switchmode = SWITCH_SND6; else if (! strcmp(this_opt+3, "snd7")) ovsc_switchmode = SWITCH_SND7; else ovsc_switchmode = SWITCH_NONE; } #ifdef ATAFB_EXT else if (!strcmp(this_opt,"mv300")) { external_bitspercol = 8; external_card_type = IS_MV300; } else if (!strncmp(this_opt,"external:",9)) strcpy(ext_str, this_opt+9); #endif else if (!strncmp(this_opt,"internal:",9)) strcpy(int_str, this_opt+9); #ifdef ATAFB_FALCON else if (!strcmp(this_opt, "pwrsave")) pwrsave = 1; else if (!strncmp(this_opt, "eclock:", 7)) { fext.f = simple_strtoul(this_opt+7, NULL, 10); /* external pixelclock in kHz --> ps */ fext.t = (2000000000UL/fext.f+1)/2; fext.f *= 1000; } else if (!strncmp(this_opt, "monitorcap:", 11)) strcpy(mcap_spec, this_opt+11); #endif else if (!strcmp(this_opt, "keep")) DontCalcRes = 1; else if (!strncmp(this_opt, "R", 1)) strcpy(user_mode, this_opt+1); } if (*int_str) { /* Format to config extended internal video hardware like OverScan: "<switch-type>,internal:<xres>;<yres>;<xres_max>;<yres_max>;<offset>" Explanation: <switch-type> type to switch on higher resolution sw_acia : via keyboard ACIA sw_snd6 : via bit 6 of the soundchip port sw_snd7 : via bit 7 of the soundchip port <xres>: x-resolution <yres>: y-resolution The following are only needed if you have an overscan which needs a black border: <xres_max>: max. length of a line in pixels your OverScan hardware would allow <yres_max>: max. number of lines your OverScan hardware would allow <offset>: Offset from physical beginning to visible beginning of screen in bytes */ int xres; char *p; if (!(p = strtoke(int_str, ";")) ||!*p) goto int_invalid; xres = simple_strtoul(p, NULL, 10); if (!(p = strtoke(NULL, ";")) || !*p) goto int_invalid; sttt_xres=xres; tt_yres=st_yres=simple_strtoul(p, NULL, 10); if ((p=strtoke(NULL, ";")) && *p) { sttt_xres_virtual=simple_strtoul(p, NULL, 10); } if ((p=strtoke(NULL, ";")) && *p) { sttt_yres_virtual=simple_strtoul(p, NULL, 0); } if ((p=strtoke(NULL, ";")) && *p) { ovsc_offset=simple_strtoul(p, NULL, 0); } if (ovsc_offset || (sttt_yres_virtual != st_yres)) use_hwscroll=0; } else int_invalid: ovsc_switchmode = SWITCH_NONE; #ifdef ATAFB_EXT if (*ext_str) { int xres, yres, depth, planes; unsigned long addr, len; char *p; /* Format is: <xres>;<yres>;<depth>;<plane organ.>; * <screen mem addr> * [;<screen mem length>[;<vgaiobase>[;<colorreg-type>]]] */ if (!(p = strtoke(ext_str, ";")) ||!*p) goto ext_invalid; xres = simple_strtoul(p, NULL, 10); if (xres <= 0) goto ext_invalid; if (!(p = strtoke(NULL, ";")) ||!*p) goto ext_invalid; yres = simple_strtoul(p, NULL, 10); if (yres <= 0) goto ext_invalid; if (!(p = strtoke(NULL, ";")) ||!*p) goto ext_invalid; depth = simple_strtoul(p, NULL, 10); if (depth != 1 && depth != 2 && depth != 4 && depth != 8 && depth != 16 && depth != 24) goto ext_invalid; if (!(p = strtoke(NULL, ";")) ||!*p) goto ext_invalid; if (*p == 'i') planes = FB_TYPE_INTERLEAVED_PLANES; else if (*p == 'p') planes = FB_TYPE_PACKED_PIXELS; else if (*p == 'n') planes = FB_TYPE_PLANES; else if (*p == 't') planes = -1; /* true color */ else goto ext_invalid; if (!(p = strtoke(NULL, ";")) ||!*p) goto ext_invalid; addr = simple_strtoul(p, NULL, 0); if (!(p = strtoke(NULL, ";")) ||!*p) len = xres*yres*depth/8; else len = simple_strtoul(p, NULL, 0); if ((p = strtoke(NULL, ";")) && *p) external_vgaiobase=simple_strtoul(p, NULL, 0); if ((p = strtoke(NULL, ";")) && *p) { external_bitspercol = simple_strtoul(p, NULL, 0); if (external_bitspercol > 8) external_bitspercol = 8; else if (external_bitspercol < 1) external_bitspercol = 1; } if ((p = strtoke(NULL, ";")) && *p) { if (!strcmp(this_opt, "vga")) external_card_type = IS_VGA; if (!strcmp(this_opt, "mv300")) external_card_type = IS_MV300; } external_xres = xres; external_yres = yres; external_depth = depth; external_pmode = planes; external_addr = addr; external_len = len; if (external_card_type == IS_MV300) switch (external_depth) { case 1: MV300_reg = MV300_reg_1bit; break; case 4: MV300_reg = MV300_reg_4bit; break; case 8: MV300_reg = MV300_reg_8bit; break; } ext_invalid: ; } #endif /* ATAFB_EXT */ #ifdef ATAFB_FALCON if (*mcap_spec) { char *p; int vmin, vmax, hmin, hmax; /* Format for monitor capabilities is: <Vmin>;<Vmax>;<Hmin>;<Hmax> * <V*> vertical freq. in Hz * <H*> horizontal freq. in kHz */ if (!(p = strtoke(mcap_spec, ";")) || !*p) goto cap_invalid; vmin = simple_strtoul(p, NULL, 10); if (vmin <= 0) goto cap_invalid; if (!(p = strtoke(NULL, ";")) || !*p) goto cap_invalid; vmax = simple_strtoul(p, NULL, 10); if (vmax <= 0 || vmax <= vmin) goto cap_invalid; if (!(p = strtoke(NULL, ";")) || !*p) goto cap_invalid; hmin = 1000 * simple_strtoul(p, NULL, 10); if (hmin <= 0) goto cap_invalid; if (!(p = strtoke(NULL, "")) || !*p) goto cap_invalid; hmax = 1000 * simple_strtoul(p, NULL, 10); if (hmax <= 0 || hmax <= hmin) goto cap_invalid; vfmin = vmin; vfmax = vmax; hfmin = hmin; hfmax = hmax; cap_invalid: ; } #endif if (*user_mode) { /* Format of user defined video mode is: <xres>;<yres>;<depth> */ char *p; int xres, yres, depth, temp; if (!(p = strtoke(user_mode, ";")) || !*p) goto user_invalid; xres = simple_strtoul(p, NULL, 10); if (!(p = strtoke(NULL, ";")) || !*p) goto user_invalid; yres = simple_strtoul(p, NULL, 10); if (!(p = strtoke(NULL, "")) || !*p) goto user_invalid; depth = simple_strtoul(p, NULL, 10); if ((temp=get_video_mode("user0"))) { default_par=temp; atari_fb_predefined[default_par-1].xres = xres; atari_fb_predefined[default_par-1].yres = yres; atari_fb_predefined[default_par-1].bits_per_pixel = depth; } user_invalid: ; } }
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