text: /*
   *  linux/drivers/video/console/sticore.c -
   *	core code for console driver using HP's STI firmware
   *
   *	Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
   *	Copyright (C) 2001-2013 Helge Deller <deller@gmx.de>
   *	Copyright (C) 2001-2002 Thomas Bogendoerfer <tsbogend@alpha.franken.de>
   * 
   * TODO:
   * - call STI in virtual mode rather than in real mode
   * - screen blanking with state_mgmt() in text mode STI ? 
   * - try to make it work on m68k hp workstations ;)
   * 
   */
  
  #include <linux/module.h>
  #include <linux/types.h>
  #include <linux/kernel.h>
  #include <linux/slab.h>
  #include <linux/init.h>
  #include <linux/pci.h>
  #include <linux/font.h>
  
  #include <asm/hardware.h>
  #include <asm/page.h>
  #include <asm/parisc-device.h>
  #include <asm/pdc.h>
  #include <asm/cacheflush.h>
  #include <asm/grfioctl.h>
  
  #include "../fbdev/sticore.h"
  
  #define STI_DRIVERVERSION "Version 0.9b"
  
  static struct sti_struct *default_sti __read_mostly;
  
  /* number of STI ROMS found and their ptrs to each struct */
  static int num_sti_roms __read_mostly;
  static struct sti_struct *sti_roms[MAX_STI_ROMS] __read_mostly;
  
  
  /* The colour indices used by STI are
   *   0 - Black
   *   1 - White
   *   2 - Red
   *   3 - Yellow/Brown
   *   4 - Green
   *   5 - Cyan
   *   6 - Blue
   *   7 - Magenta
   *
   * So we have the same colours as VGA (basically one bit each for R, G, B),
   * but have to translate them, anyway. */
  
  static const u8 col_trans[8] = {
          0, 6, 4, 5,
          2, 7, 3, 1
  };
  
  #define c_fg(sti, c) col_trans[((c>> 8) & 7)]
  #define c_bg(sti, c) col_trans[((c>>11) & 7)]
  #define c_index(sti, c) ((c) & 0xff)
  
  static const struct sti_init_flags default_init_flags = {
  	.wait	= STI_WAIT, 
  	.reset	= 1,
  	.text	= 1, 
  	.nontext = 1,
  	.no_chg_bet = 1, 
  	.no_chg_bei = 1, 
  	.init_cmap_tx = 1,
  };
  
  static int sti_init_graph(struct sti_struct *sti)
  {
  	struct sti_init_inptr *inptr = &sti->sti_data->init_inptr;
  	struct sti_init_inptr_ext *inptr_ext = &sti->sti_data->init_inptr_ext;
  	struct sti_init_outptr *outptr = &sti->sti_data->init_outptr;
  	unsigned long flags;
  	int ret, err;
  
  	spin_lock_irqsave(&sti->lock, flags);
  
  	memset(inptr, 0, sizeof(*inptr));
  	inptr->text_planes = 3; /* # of text planes (max 3 for STI) */
  	memset(inptr_ext, 0, sizeof(*inptr_ext));
  	inptr->ext_ptr = STI_PTR(inptr_ext);
  	outptr->errno = 0;
  
  	ret = sti_call(sti, sti->init_graph, &default_init_flags, inptr,
  		outptr, sti->glob_cfg);
  
  	if (ret >= 0)
  		sti->text_planes = outptr->text_planes;
  	err = outptr->errno;
  
  	spin_unlock_irqrestore(&sti->lock, flags);
  
  	if (ret < 0) {
  		pr_err("STI init_graph failed (ret %d, errno %d)\n", ret, err);
  		return -1;
  	}
  	
  	return 0;
  }
  
  static const struct sti_conf_flags default_conf_flags = {
  	.wait	= STI_WAIT,
  };
  
  static void sti_inq_conf(struct sti_struct *sti)
  {
  	struct sti_conf_inptr *inptr = &sti->sti_data->inq_inptr;
  	struct sti_conf_outptr *outptr = &sti->sti_data->inq_outptr;
  	unsigned long flags;
  	s32 ret;
  
  	outptr->ext_ptr = STI_PTR(&sti->sti_data->inq_outptr_ext);
  	
  	do {
  		spin_lock_irqsave(&sti->lock, flags);
  		memset(inptr, 0, sizeof(*inptr));
  		ret = sti_call(sti, sti->inq_conf, &default_conf_flags,
  			inptr, outptr, sti->glob_cfg);
  		spin_unlock_irqrestore(&sti->lock, flags);
  	} while (ret == 1);
  }
  
  static const struct sti_font_flags default_font_flags = {
  	.wait		= STI_WAIT,
  	.non_text	= 0,
  };
  
  void
  sti_putc(struct sti_struct *sti, int c, int y, int x)
  {
  	struct sti_font_inptr *inptr = &sti->sti_data->font_inptr;
  	struct sti_font_inptr inptr_default = {
  		.font_start_addr= STI_PTR(sti->font->raw),
  		.index		= c_index(sti, c),
  		.fg_color	= c_fg(sti, c),
  		.bg_color	= c_bg(sti, c),
  		.dest_x		= x * sti->font_width,
  		.dest_y		= y * sti->font_height,
  	};
  	struct sti_font_outptr *outptr = &sti->sti_data->font_outptr;
  	s32 ret;
  	unsigned long flags;
  
  	do {
  		spin_lock_irqsave(&sti->lock, flags);
  		*inptr = inptr_default;
  		ret = sti_call(sti, sti->font_unpmv, &default_font_flags,
  			inptr, outptr, sti->glob_cfg);
  		spin_unlock_irqrestore(&sti->lock, flags);
  	} while (ret == 1);
  }
  
  static const struct sti_blkmv_flags clear_blkmv_flags = {
  	.wait	= STI_WAIT, 
  	.color	= 1, 
  	.clear	= 1, 
  };
  
  void
  sti_set(struct sti_struct *sti, int src_y, int src_x,
  	int height, int width, u8 color)
  {
  	struct sti_blkmv_inptr *inptr = &sti->sti_data->blkmv_inptr;
  	struct sti_blkmv_inptr inptr_default = {
  		.fg_color	= color,
  		.bg_color	= color,
  		.src_x		= src_x,
  		.src_y		= src_y,
  		.dest_x		= src_x,
  		.dest_y		= src_y,
  		.width		= width,
  		.height		= height,
  	};
  	struct sti_blkmv_outptr *outptr = &sti->sti_data->blkmv_outptr;
  	s32 ret;
  	unsigned long flags;
  	
  	do {
  		spin_lock_irqsave(&sti->lock, flags);
  		*inptr = inptr_default;
  		ret = sti_call(sti, sti->block_move, &clear_blkmv_flags,
  			inptr, outptr, sti->glob_cfg);
  		spin_unlock_irqrestore(&sti->lock, flags);
  	} while (ret == 1);
  }
  
  void
  sti_clear(struct sti_struct *sti, int src_y, int src_x,
  	  int height, int width, int c)
  {
  	struct sti_blkmv_inptr *inptr = &sti->sti_data->blkmv_inptr;
  	struct sti_blkmv_inptr inptr_default = {
  		.fg_color	= c_fg(sti, c),
  		.bg_color	= c_bg(sti, c),
  		.src_x		= src_x * sti->font_width,
  		.src_y		= src_y * sti->font_height,
  		.dest_x		= src_x * sti->font_width,
  		.dest_y		= src_y * sti->font_height,
  		.width		= width * sti->font_width,
  		.height		= height* sti->font_height,
  	};
  	struct sti_blkmv_outptr *outptr = &sti->sti_data->blkmv_outptr;
  	s32 ret;
  	unsigned long flags;
  
  	do {
  		spin_lock_irqsave(&sti->lock, flags);
  		*inptr = inptr_default;
  		ret = sti_call(sti, sti->block_move, &clear_blkmv_flags,
  			inptr, outptr, sti->glob_cfg);
  		spin_unlock_irqrestore(&sti->lock, flags);
  	} while (ret == 1);
  }
  
  static const struct sti_blkmv_flags default_blkmv_flags = {
  	.wait = STI_WAIT, 
  };
  
  void
  sti_bmove(struct sti_struct *sti, int src_y, int src_x,
  	  int dst_y, int dst_x, int height, int width)
  {
  	struct sti_blkmv_inptr *inptr = &sti->sti_data->blkmv_inptr;
  	struct sti_blkmv_inptr inptr_default = {
  		.src_x		= src_x * sti->font_width,
  		.src_y		= src_y * sti->font_height,
  		.dest_x		= dst_x * sti->font_width,
  		.dest_y		= dst_y * sti->font_height,
  		.width		= width * sti->font_width,
  		.height		= height* sti->font_height,
  	};
  	struct sti_blkmv_outptr *outptr = &sti->sti_data->blkmv_outptr;
  	s32 ret;
  	unsigned long flags;
  
  	do {
  		spin_lock_irqsave(&sti->lock, flags);
  		*inptr = inptr_default;
  		ret = sti_call(sti, sti->block_move, &default_blkmv_flags,
  			inptr, outptr, sti->glob_cfg);
  		spin_unlock_irqrestore(&sti->lock, flags);
  	} while (ret == 1);
  }
  
  
  static void sti_flush(unsigned long start, unsigned long end)
  {
  	flush_icache_range(start, end);
  }
  
  static void sti_rom_copy(unsigned long base, unsigned long count, void *dest)
  {
  	unsigned long dest_start = (unsigned long) dest;
  
  	/* this still needs to be revisited (see arch/parisc/mm/init.c:246) ! */
  	while (count >= 4) {
  		count -= 4;
  		*(u32 *)dest = gsc_readl(base);
  		base += 4;
  		dest += 4;
  	}
  	while (count) {
  		count--;
  		*(u8 *)dest = gsc_readb(base);
  		base++;
  		dest++;
  	}
  
  	sti_flush(dest_start, (unsigned long)dest);
  }
  
  
  
  
  static char default_sti_path[21] __read_mostly;
  
  #ifndef MODULE
  static int __init sti_setup(char *str)
  {
  	if (str)
  		strlcpy (default_sti_path, str, sizeof (default_sti_path));
  	
  	return 1;
  }
  
  /*	Assuming the machine has multiple STI consoles (=graphic cards) which
   *	all get detected by sticon, the user may define with the linux kernel
   *	parameter sti=<x> which of them will be the initial boot-console.
   *	<x> is a number between 0 and MAX_STI_ROMS, with 0 as the default 
   *	STI screen.
   */
  __setup("sti=", sti_setup);
  #endif
  
  
  
  static char *font_name[MAX_STI_ROMS];
  static int font_index[MAX_STI_ROMS],
  	   font_height[MAX_STI_ROMS],
  	   font_width[MAX_STI_ROMS];
  #ifndef MODULE
  static int sti_font_setup(char *str)
  {
  	char *x;
  	int i = 0;
  
  	/* we accept sti_font=VGA8x16, sti_font=10x20, sti_font=10*20 
  	 * or sti_font=7 style command lines. */
  
  	while (i<MAX_STI_ROMS && str && *str) {
  		if (*str>='0' && *str<='9') {
  			if ((x = strchr(str, 'x')) || (x = strchr(str, '*'))) {
  				font_height[i] = simple_strtoul(str, NULL, 0);
  				font_width[i] = simple_strtoul(x+1, NULL, 0);
  			} else {
  				font_index[i] = simple_strtoul(str, NULL, 0);
  			}
  		} else {
  			font_name[i] = str;	/* fb font name */
  		}
  
  		if ((x = strchr(str, ',')))
  			*x++ = 0;
  		str = x;
  
  		i++;
  	}
  
  	return 1;
  }
  
  /*	The optional linux kernel parameter "sti_font" defines which font
   *	should be used by the sticon driver to draw characters to the screen.
   *	Possible values are:
   *	- sti_font=<fb_fontname>:
   *		<fb_fontname> is the name of one of the linux-kernel built-in 
   *		framebuffer font names (e.g. VGA8x16, SUN22x18). 
   *		This is only available if the fonts have been statically compiled 
   *		in with e.g. the CONFIG_FONT_8x16 or CONFIG_FONT_SUN12x22 options.
   *	- sti_font=<number>
   *		most STI ROMs have built-in HP specific fonts, which can be selected
   *		by giving the desired number to the sticon driver. 
   *		NOTE: This number is machine and STI ROM dependend.
   *	- sti_font=<height>x<width>  (e.g. sti_font=16x8)
   *		<height> and <width> gives hints to the height and width of the
   *		font which the user wants. The sticon driver will try to use
   *		a font with this height and width, but if no suitable font is
   *		found, sticon will use the default 8x8 font.
   */
  __setup("sti_font=", sti_font_setup);
  #endif
  
  
  	
  static void sti_dump_globcfg(struct sti_glob_cfg *glob_cfg,
  			     unsigned int sti_mem_request)
  {
  	struct sti_glob_cfg_ext *cfg;
  	
  	DPRINTK((KERN_INFO
  		"%d text planes\n"
  		"%4d x %4d screen resolution\n"
  		"%4d x %4d offscreen\n"
  		"%4d x %4d layout\n"
  		"regions at %08x %08x %08x %08x\n"
  		"regions at %08x %08x %08x %08x\n"
  		"reent_lvl %d\n"
  		"save_addr %08x\n",
  		glob_cfg->text_planes,
  		glob_cfg->onscreen_x, glob_cfg->onscreen_y,
  		glob_cfg->offscreen_x, glob_cfg->offscreen_y,
  		glob_cfg->total_x, glob_cfg->total_y,
  		glob_cfg->region_ptrs[0], glob_cfg->region_ptrs[1],
  		glob_cfg->region_ptrs[2], glob_cfg->region_ptrs[3],
  		glob_cfg->region_ptrs[4], glob_cfg->region_ptrs[5],
  		glob_cfg->region_ptrs[6], glob_cfg->region_ptrs[7],
  		glob_cfg->reent_lvl,
  		glob_cfg->save_addr));
  
  	/* dump extended cfg */ 
  	cfg = PTR_STI((unsigned long)glob_cfg->ext_ptr);
  	DPRINTK(( KERN_INFO
  		"monitor %d\n"
  		"in friendly mode: %d\n"
  		"power consumption %d watts\n"
  		"freq ref %d\n"
  		"sti_mem_addr %08x (size=%d bytes)\n",
  		cfg->curr_mon,
  		cfg->friendly_boot,
  		cfg->power,
  		cfg->freq_ref,
  		cfg->sti_mem_addr, sti_mem_request));
  }
  
  static void sti_dump_outptr(struct sti_struct *sti)
  {
  	DPRINTK((KERN_INFO
  		"%d bits per pixel\n"
  		"%d used bits\n"
  		"%d planes\n"
  		"attributes %08x\n",
  		 sti->sti_data->inq_outptr.bits_per_pixel,
  		 sti->sti_data->inq_outptr.bits_used,
  		 sti->sti_data->inq_outptr.planes,
  		 sti->sti_data->inq_outptr.attributes));
  }
  
  static int sti_init_glob_cfg(struct sti_struct *sti, unsigned long rom_address,
  			     unsigned long hpa)
  {
  	struct sti_glob_cfg *glob_cfg;
  	struct sti_glob_cfg_ext *glob_cfg_ext;
  	void *save_addr;
  	void *sti_mem_addr;
  	int i, size;
  
  	if (sti->sti_mem_request < 256)
  		sti->sti_mem_request = 256; /* STI default */
  
  	size = sizeof(struct sti_all_data) + sti->sti_mem_request - 256;
  
  	sti->sti_data = kzalloc(size, STI_LOWMEM);
  	if (!sti->sti_data)
  		return -ENOMEM;
  
  	glob_cfg	= &sti->sti_data->glob_cfg;
  	glob_cfg_ext	= &sti->sti_data->glob_cfg_ext;
  	save_addr	= &sti->sti_data->save_addr;
  	sti_mem_addr	= &sti->sti_data->sti_mem_addr;
  
  	glob_cfg->ext_ptr = STI_PTR(glob_cfg_ext);
  	glob_cfg->save_addr = STI_PTR(save_addr);
  	for (i=0; i<8; i++) {
  		unsigned long newhpa, len;
  	       
  		if (sti->pd) {
  			unsigned char offs = sti->rm_entry[i];
  				
  			if (offs == 0)
  				continue;
  			if (offs != PCI_ROM_ADDRESS &&
  			    (offs < PCI_BASE_ADDRESS_0 ||
  			     offs > PCI_BASE_ADDRESS_5)) {
  				printk (KERN_WARNING
  					"STI pci region mapping for region %d (%02x) can't be mapped\n",
  					i,sti->rm_entry[i]);
  				continue;
  			}
  			newhpa = pci_resource_start (sti->pd, (offs - PCI_BASE_ADDRESS_0) / 4);
  		} else
  			newhpa = (i == 0) ? rom_address : hpa;
  
  		sti->regions_phys[i] =
  			REGION_OFFSET_TO_PHYS(sti->regions[i], newhpa);
  		
  		len = sti->regions[i].region_desc.length * 4096;
  		if (len)
  			glob_cfg->region_ptrs[i] = sti->regions_phys[i];
  		
  		DPRINTK(("region #%d: phys %08lx, region_ptr %08x, len=%lukB, "
  			 "btlb=%d, sysonly=%d, cache=%d, last=%d\n",
  			i, sti->regions_phys[i], glob_cfg->region_ptrs[i],
  			len/1024,
  			sti->regions[i].region_desc.btlb,
  			sti->regions[i].region_desc.sys_only,
  			sti->regions[i].region_desc.cache, 
  			sti->regions[i].region_desc.last));
  
  		/* last entry reached ? */
  		if (sti->regions[i].region_desc.last)
  			break;
  	}
  
  	if (++i<8 && sti->regions[i].region)
  		printk(KERN_WARNING "%s: *future ptr (0x%8x) not yet supported !\n",
  				__FILE__, sti->regions[i].region);
  
  	glob_cfg_ext->sti_mem_addr = STI_PTR(sti_mem_addr);
  
  	sti->glob_cfg = glob_cfg;
  	
  	return 0;
  }
  
  #ifdef CONFIG_FONT_SUPPORT
  static struct sti_cooked_font *
  sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name)
  {
  	const struct font_desc *fbfont = NULL;
  	unsigned int size, bpc;
  	void *dest;
  	struct sti_rom_font *nf;
  	struct sti_cooked_font *cooked_font;
  	
  	if (fbfont_name && strlen(fbfont_name))
  		fbfont = find_font(fbfont_name);
  	if (!fbfont)
  		fbfont = get_default_font(1024,768, ~(u32)0, ~(u32)0);
  	if (!fbfont)
  		return NULL;
  
  	pr_info("STI selected %dx%d framebuffer font %s for sticon\n",
  			fbfont->width, fbfont->height, fbfont->name);
  			
  	bpc = ((fbfont->width+7)/8) * fbfont->height; 
  	size = bpc * 256;
  	size += sizeof(struct sti_rom_font);
  
  	nf = kzalloc(size, STI_LOWMEM);
  	if (!nf)
  		return NULL;
  
  	nf->first_char = 0;
  	nf->last_char = 255;
  	nf->width = fbfont->width;
  	nf->height = fbfont->height;
  	nf->font_type = STI_FONT_HPROMAN8;
  	nf->bytes_per_char = bpc;
  	nf->next_font = 0;
  	nf->underline_height = 1;
  	nf->underline_pos = fbfont->height - nf->underline_height;
  
  	dest = nf;
  	dest += sizeof(struct sti_rom_font);
  	memcpy(dest, fbfont->data, bpc*256);
  
  	cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL);
  	if (!cooked_font) {
  		kfree(nf);
  		return NULL;
  	}
  	
  	cooked_font->raw = nf;
  	cooked_font->next_font = NULL;
  
  	cooked_rom->font_start = cooked_font;
  
  	return cooked_font;
  }
  #else
  static struct sti_cooked_font *
  sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name)
  {
  	return NULL;
  }
  #endif
  
  static struct sti_cooked_font *sti_select_font(struct sti_cooked_rom *rom,
  		int (*search_font_fnc)(struct sti_cooked_rom *, int, int))
  {
  	struct sti_cooked_font *font;
  	int i;
  	int index = num_sti_roms;
  
  	/* check for framebuffer-font first */
  	if ((font = sti_select_fbfont(rom, font_name[index])))
  		return font;
  
  	if (font_width[index] && font_height[index])
  		font_index[index] = search_font_fnc(rom, 
  				font_height[index], font_width[index]);
  
  	for (font = rom->font_start, i = font_index[index];
  	    font && (i > 0);
  	    font = font->next_font, i--);
  
  	if (font)
  		return font;
  	else
  		return rom->font_start;
  }
  
  
  static void sti_dump_rom(struct sti_rom *rom)
  {
  	printk(KERN_INFO "    id %04x-%04x, conforms to spec rev. %d.%02x\n",
  		rom->graphics_id[0], 
  		rom->graphics_id[1],
  		rom->revno[0] >> 4, 
  		rom->revno[0] & 0x0f);
  	DPRINTK(("      supports %d monitors\n", rom->num_mons));
  	DPRINTK(("      font start %08x\n", rom->font_start));
  	DPRINTK(("      region list %08x\n", rom->region_list));
  	DPRINTK(("      init_graph %08x\n", rom->init_graph));
  	DPRINTK(("      bus support %02x\n", rom->bus_support));
  	DPRINTK(("      ext bus support %02x\n", rom->ext_bus_support));
  	DPRINTK(("      alternate code type %d\n", rom->alt_code_type));
  }
  
  
  static int sti_cook_fonts(struct sti_cooked_rom *cooked_rom,
  			  struct sti_rom *raw_rom)
  {
  	struct sti_rom_font *raw_font, *font_start;
  	struct sti_cooked_font *cooked_font;
  	
  	cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL);
  	if (!cooked_font)
  		return 0;
  
  	cooked_rom->font_start = cooked_font;
  
  	raw_font = ((void *)raw_rom) + (raw_rom->font_start);
  
  	font_start = raw_font;
  	cooked_font->raw = raw_font;
  
  	while (raw_font->next_font) {
  		raw_font = ((void *)font_start) + (raw_font->next_font);
  
  		cooked_font->next_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL);
  		if (!cooked_font->next_font)
  			return 1;
  
  		cooked_font = cooked_font->next_font;
  
  		cooked_font->raw = raw_font;
  	}
  
  	cooked_font->next_font = NULL;
  	return 1;
  }
  
  
  static int sti_search_font(struct sti_cooked_rom *rom, int height, int width)
  {
  	struct sti_cooked_font *font;
  	int i = 0;
  	
  	for (font = rom->font_start; font; font = font->next_font, i++) {
  		if ((font->raw->width == width) &&
  		    (font->raw->height == height))
  			return i;
  	}
  	return 0;
  }
  
  #define BMODE_RELOCATE(offset)		offset = (offset) / 4;
  #define BMODE_LAST_ADDR_OFFS		0x50
  
  static void *sti_bmode_font_raw(struct sti_cooked_font *f)
  {
  	unsigned char *n, *p, *q;
  	int size = f->raw->bytes_per_char*256+sizeof(struct sti_rom_font);
  	
  	n = kzalloc(4*size, STI_LOWMEM);
  	if (!n)
  		return NULL;
  	p = n + 3;
  	q = (unsigned char *)f->raw;
  	while (size--) {
  		*p = *q++;
  		p+=4;
  	}
  	return n + 3;
  }
  
  static void sti_bmode_rom_copy(unsigned long base, unsigned long count,
  			       void *dest)
  {
  	unsigned long dest_start = (unsigned long) dest;
  
  	while (count) {
  		count--;
  		*(u8 *)dest = gsc_readl(base);
  		base += 4;
  		dest++;
  	}
  
  	sti_flush(dest_start, (unsigned long)dest);
  }
  
  static struct sti_rom *sti_get_bmode_rom (unsigned long address)
  {
  	struct sti_rom *raw;
  	u32 size;
  	struct sti_rom_font *raw_font, *font_start;
  
  	sti_bmode_rom_copy(address + BMODE_LAST_ADDR_OFFS, sizeof(size), &size);
  
  	size = (size+3) / 4;
  	raw = kmalloc(size, STI_LOWMEM);
  	if (raw) {
  		sti_bmode_rom_copy(address, size, raw);
  		memmove (&raw->res004, &raw->type[0], 0x3c);
  		raw->type[3] = raw->res004;
  
  		BMODE_RELOCATE (raw->region_list);
  		BMODE_RELOCATE (raw->font_start);
  
  		BMODE_RELOCATE (raw->init_graph);
  		BMODE_RELOCATE (raw->state_mgmt);
  		BMODE_RELOCATE (raw->font_unpmv);
  		BMODE_RELOCATE (raw->block_move);
  		BMODE_RELOCATE (raw->inq_conf);
  
  		raw_font = ((void *)raw) + raw->font_start;
  		font_start = raw_font;
  		
  		while (raw_font->next_font) {
  			BMODE_RELOCATE (raw_font->next_font);
  			raw_font = ((void *)font_start) + raw_font->next_font;
  		}
  	}
  	return raw;
  }
  
  static struct sti_rom *sti_get_wmode_rom(unsigned long address)
  {
  	struct sti_rom *raw;
  	unsigned long size;
  
  	/* read the ROM size directly from the struct in ROM */ 
  	size = gsc_readl(address + offsetof(struct sti_rom,last_addr));
  
  	raw = kmalloc(size, STI_LOWMEM);
  	if (raw)
  		sti_rom_copy(address, size, raw);
  
  	return raw;
  }
  
  static int sti_read_rom(int wordmode, struct sti_struct *sti,
  			unsigned long address)
  {
  	struct sti_cooked_rom *cooked;
  	struct sti_rom *raw = NULL;
  	unsigned long revno;
  
  	cooked = kmalloc(sizeof *cooked, GFP_KERNEL);
  	if (!cooked)
  		goto out_err;
  
  	if (wordmode)
  		raw = sti_get_wmode_rom (address);
  	else
  		raw = sti_get_bmode_rom (address);
  
  	if (!raw)
  		goto out_err;
  
  	if (!sti_cook_fonts(cooked, raw)) {
  		printk(KERN_ERR "No font found for STI at %08lx\n", address);
  		goto out_err;
  	}
  
  	if (raw->region_list)
  		memcpy(sti->regions, ((void *)raw)+raw->region_list, sizeof(sti->regions));
  
  	address = (unsigned long) STI_PTR(raw);
  
  	pr_info("STI ROM supports 32 %sbit firmware functions.\n",
  		raw->alt_code_type == ALT_CODE_TYPE_PA_RISC_64
  		? "and 64 " : "");
  
  	sti->font_unpmv = address + (raw->font_unpmv & 0x03ffffff);
  	sti->block_move = address + (raw->block_move & 0x03ffffff);
  	sti->init_graph = address + (raw->init_graph & 0x03ffffff);
  	sti->inq_conf   = address + (raw->inq_conf   & 0x03ffffff);
  
  	sti->rom = cooked;
  	sti->rom->raw = raw;
  	
  	sti->font = sti_select_font(sti->rom, sti_search_font);
  	sti->font_width = sti->font->raw->width;
  	sti->font_height = sti->font->raw->height;
  	if (!wordmode)
  		sti->font->raw = sti_bmode_font_raw(sti->font);
  
  	sti->sti_mem_request = raw->sti_mem_req;
  	sti->graphics_id[0] = raw->graphics_id[0];
  	sti->graphics_id[1] = raw->graphics_id[1];
  	
  	sti_dump_rom(raw);
  
  	/* check if the ROM routines in this card are compatible */
  	if (wordmode || sti->graphics_id[1] != 0x09A02587)
  		goto ok;
  
  	revno = (raw->revno[0] << 8) | raw->revno[1];
  
  	switch (sti->graphics_id[0]) {
  	case S9000_ID_HCRX:
  		/* HyperA or HyperB ? */
  		if (revno == 0x8408 || revno == 0x840b)
  			goto msg_not_supported;
  		break;
  	case CRT_ID_THUNDER:
  		if (revno == 0x8509)
  			goto msg_not_supported;
  		break;
  	case CRT_ID_THUNDER2:
  		if (revno == 0x850c)
  			goto msg_not_supported;
  	}
  ok:
  	return 1;
  
  msg_not_supported:
  	printk(KERN_ERR "Sorry, this GSC/STI card is not yet supported.\n");
  	printk(KERN_ERR "Please see http://parisc-linux.org/faq/"
  			"graphics-howto.html for more info.\n");
  	/* fall through */
  out_err:
  	kfree(raw);
  	kfree(cooked);
  	return 0;
  }
  
  static struct sti_struct *sti_try_rom_generic(unsigned long address,
  					      unsigned long hpa,
  					      struct pci_dev *pd)
  {
  	struct sti_struct *sti;
  	int ok;
  	u32 sig;
  
  	if (num_sti_roms >= MAX_STI_ROMS) {
  		printk(KERN_WARNING "maximum number of STI ROMS reached !\n");
  		return NULL;
  	}
  	
  	sti = kzalloc(sizeof(*sti), GFP_KERNEL);
  	if (!sti) {
  		printk(KERN_ERR "Not enough memory !\n");
  		return NULL;
  	}
  
  	spin_lock_init(&sti->lock);
  
  test_rom:
  	/* if we can't read the ROM, bail out early.  Not being able
  	 * to read the hpa is okay, for romless sti */
  	if (pdc_add_valid(address))
  		goto out_err;
  
  	sig = gsc_readl(address);
  
  	/* check for a PCI ROM structure */
  	if ((le32_to_cpu(sig)==0xaa55)) {
  		unsigned int i, rm_offset;
  		u32 *rm;
  		i = gsc_readl(address+0x04);
  		if (i != 1) {
  			/* The ROM could have multiple architecture 
  			 * dependent images (e.g. i386, parisc,...) */
  			printk(KERN_WARNING 
  				"PCI ROM is not a STI ROM type image (0x%8x)\n", i);
  			goto out_err;
  		}
  		
  		sti->pd = pd;
  
  		i = gsc_readl(address+0x0c);
  		DPRINTK(("PCI ROM size (from header) = %d kB\n",
  			le16_to_cpu(i>>16)*512/1024));
  		rm_offset = le16_to_cpu(i & 0xffff);
  		if (rm_offset) { 
  			/* read 16 bytes from the pci region mapper array */
  			rm = (u32*) &sti->rm_entry;
  			*rm++ = gsc_readl(address+rm_offset+0x00);
  			*rm++ = gsc_readl(address+rm_offset+0x04);
  			*rm++ = gsc_readl(address+rm_offset+0x08);
  			*rm++ = gsc_readl(address+rm_offset+0x0c);
  			DPRINTK(("PCI region Mapper offset = %08x: ",
  				rm_offset));
  			for (i=0; i<16; i++)
  				DPRINTK(("%02x ", sti->rm_entry[i]));
  			DPRINTK(("\n"));
  		}
  
  		address += le32_to_cpu(gsc_readl(address+8));
  		DPRINTK(("sig %04x, PCI STI ROM at %08lx\n", sig, address));
  		goto test_rom;
  	}
  	
  	ok = 0;
  	
  	if ((sig & 0xff) == 0x01) {
  		DPRINTK(("    byte mode ROM at %08lx, hpa at %08lx\n",
  		       address, hpa));
  		ok = sti_read_rom(0, sti, address);
  	}
  
  	if ((sig & 0xffff) == 0x0303) {
  		DPRINTK(("    word mode ROM at %08lx, hpa at %08lx\n",
  		       address, hpa));
  		ok = sti_read_rom(1, sti, address);
  	}
  
  	if (!ok)
  		goto out_err;
  
  	if (sti_init_glob_cfg(sti, address, hpa))
  		goto out_err; /* not enough memory */
  
  	/* disable STI PCI ROM. ROM and card RAM overlap and
  	 * leaving it enabled would force HPMCs
  	 */
  	if (sti->pd) {
  		unsigned long rom_base;
  		rom_base = pci_resource_start(sti->pd, PCI_ROM_RESOURCE);	
  		pci_write_config_dword(sti->pd, PCI_ROM_ADDRESS, rom_base & ~PCI_ROM_ADDRESS_ENABLE);
  		DPRINTK((KERN_DEBUG "STI PCI ROM disabled\n"));
  	}
  
  	if (sti_init_graph(sti))
  		goto out_err;
  
  	sti_inq_conf(sti);
  	sti_dump_globcfg(sti->glob_cfg, sti->sti_mem_request);
  	sti_dump_outptr(sti);
  	
  	pr_info("    graphics card name: %s\n",
  		sti->sti_data->inq_outptr.dev_name);
  
  	sti_roms[num_sti_roms] = sti;
  	num_sti_roms++;
  	
  	return sti;
  
  out_err:
  	kfree(sti);
  	return NULL;
  }
  
  static void sticore_check_for_default_sti(struct sti_struct *sti, char *path)
  {
  	if (strcmp (path, default_sti_path) == 0)
  		default_sti = sti;
  }
  
  /*
   * on newer systems PDC gives the address of the ROM 
   * in the additional address field addr[1] while on
   * older Systems the PDC stores it in page0->proc_sti 
   */
  static int __init sticore_pa_init(struct parisc_device *dev)
  {
  	char pa_path[21];
  	struct sti_struct *sti = NULL;
  	int hpa = dev->hpa.start;
  
  	if (dev->num_addrs && dev->addr[0])
  		sti = sti_try_rom_generic(dev->addr[0], hpa, NULL);
  	if (!sti)
  		sti = sti_try_rom_generic(hpa, hpa, NULL);
  	if (!sti)
  		sti = sti_try_rom_generic(PAGE0->proc_sti, hpa, NULL);
  	if (!sti)
  		return 1;
  
  	print_pa_hwpath(dev, pa_path);
  	sticore_check_for_default_sti(sti, pa_path);
  	return 0;
  }
  
  
  static int sticore_pci_init(struct pci_dev *pd, const struct pci_device_id *ent)
  {
  #ifdef CONFIG_PCI
  	unsigned long fb_base, rom_base;
  	unsigned int fb_len, rom_len;
  	int err;
  	struct sti_struct *sti;
  	
  	err = pci_enable_device(pd);
  	if (err < 0) {
  		dev_err(&pd->dev, "Cannot enable PCI device\n");
  		return err;
  	}
  
  	fb_base = pci_resource_start(pd, 0);
  	fb_len = pci_resource_len(pd, 0);
  	rom_base = pci_resource_start(pd, PCI_ROM_RESOURCE);
  	rom_len = pci_resource_len(pd, PCI_ROM_RESOURCE);
  	if (rom_base) {
  		pci_write_config_dword(pd, PCI_ROM_ADDRESS, rom_base | PCI_ROM_ADDRESS_ENABLE);
  		DPRINTK((KERN_DEBUG "STI PCI ROM enabled at 0x%08lx\n", rom_base));
  	}
  
  	printk(KERN_INFO "STI PCI graphic ROM found at %08lx (%u kB), fb at %08lx (%u MB)\n",
  		rom_base, rom_len/1024, fb_base, fb_len/1024/1024);
  
  	DPRINTK((KERN_DEBUG "Trying PCI STI ROM at %08lx, PCI hpa at %08lx\n",
  		    rom_base, fb_base));
  
  	sti = sti_try_rom_generic(rom_base, fb_base, pd);
  	if (sti) {
  		char pa_path[30];
  		print_pci_hwpath(pd, pa_path);
  		sticore_check_for_default_sti(sti, pa_path);
  	}
  	
  	if (!sti) {
  		printk(KERN_WARNING "Unable to handle STI device '%s'\n",
  			pci_name(pd));
  		return -ENODEV;
  	}
  #endif /* CONFIG_PCI */
  
  	return 0;
  }
  
  
  static void __exit sticore_pci_remove(struct pci_dev *pd)
  {
  	BUG();
  }
  
  
  static struct pci_device_id sti_pci_tbl[] = {
  	{ PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_EG) },
  	{ PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX6) },
  	{ PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX4) },
  	{ PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FX2) },
  	{ PCI_DEVICE(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_VISUALIZE_FXE) },
  	{ 0, } /* terminate list */
  };
  MODULE_DEVICE_TABLE(pci, sti_pci_tbl);
  
  static struct pci_driver pci_sti_driver = {
  	.name		= "sti",
  	.id_table	= sti_pci_tbl,
  	.probe		= sticore_pci_init,
  	.remove		= __exit_p(sticore_pci_remove),
  };
  
  static struct parisc_device_id sti_pa_tbl[] = {
  	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00077 },
  	{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00085 },
  	{ 0, }
  };
  MODULE_DEVICE_TABLE(parisc, sti_pa_tbl);
  
  static struct parisc_driver pa_sti_driver __refdata = {
  	.name		= "sti",
  	.id_table	= sti_pa_tbl,
  	.probe		= sticore_pa_init,
  };
  
  
  /*
   * sti_init_roms() - detects all STI ROMs and stores them in sti_roms[]
   */
  
  static int sticore_initialized __read_mostly;
  
  static void sti_init_roms(void)
  {
  	if (sticore_initialized)
  		return;
  
  	sticore_initialized = 1;
  
  	printk(KERN_INFO "STI GSC/PCI core graphics driver "
  			STI_DRIVERVERSION "\n");
  
  	/* Register drivers for native & PCI cards */
  	register_parisc_driver(&pa_sti_driver);
  	WARN_ON(pci_register_driver(&pci_sti_driver));
  
  	/* if we didn't find the given default sti, take the first one */
  	if (!default_sti)
  		default_sti = sti_roms[0];
  
  }
  
  /*
   * index = 0 gives default sti
   * index > 0 gives other stis in detection order
   */
  struct sti_struct * sti_get_rom(unsigned int index)
  {
  	if (!sticore_initialized)
  		sti_init_roms();
  
  	if (index == 0)
  		return default_sti;
  
  	if (index > num_sti_roms)
  		return NULL;
  
  	return sti_roms[index-1];
  }
  EXPORT_SYMBOL(sti_get_rom);
  
  
  int sti_call(const struct sti_struct *sti, unsigned long func,
  		const void *flags, void *inptr, void *outptr,
  		struct sti_glob_cfg *glob_cfg)
  {
  	unsigned long _flags = STI_PTR(flags);
  	unsigned long _inptr = STI_PTR(inptr);
  	unsigned long _outptr = STI_PTR(outptr);
  	unsigned long _glob_cfg = STI_PTR(glob_cfg);
  	int ret;
  
  #ifdef CONFIG_64BIT
  	/* Check for overflow when using 32bit STI on 64bit kernel. */
  	if (WARN_ONCE(_flags>>32 || _inptr>>32 || _outptr>>32 || _glob_cfg>>32,
  			"Out of 32bit-range pointers!"))
  		return -1;
  #endif
  
  	ret = pdc_sti_call(func, _flags, _inptr, _outptr, _glob_cfg);
  
  	return ret;
  }
  
  MODULE_AUTHOR("Philipp Rumpf, Helge Deller, Thomas Bogendoerfer");
  MODULE_DESCRIPTION("Core STI driver for HP's NGLE series graphics cards in HP PARISC machines");
  MODULE_LICENSE("GPL v2");
  
  