Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1172 insertions, 0 deletions

diff --git a/drivers/video/console/sticore.c b/drivers/video/console/sticore.c
new file mode 100644
index 000000000..db568f67e
--- /dev/null
+++ b/drivers/video/console/sticore.c
@@ -0,0 +1,1172 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  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) 2001-2020 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 ;)
+ * 
+ */
+
+#define pr_fmt(fmt) "%s: " fmt, KBUILD_MODNAME
+
+#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 <asm/fb.h>
+
+#include "../fbdev/sticore.h"
+
+#define STI_DRIVERVERSION "Version 0.9c"
+
+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_cooked_font *font)
+{
+	struct sti_font_inptr *inptr = &sti->sti_data->font_inptr;
+	struct sti_font_inptr inptr_default = {
+		.font_start_addr = STI_PTR(font->raw),
+		.index		= c_index(sti, c),
+		.fg_color	= c_fg(sti, c),
+		.bg_color	= c_bg(sti, c),
+		.dest_x		= x * font->width,
+		.dest_y		= y * 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_cooked_font *font)
+{
+	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 * font->width,
+		.src_y		= src_y * font->height,
+		.dest_x		= src_x * font->width,
+		.dest_y		= src_y * font->height,
+		.width		= width * font->width,
+		.height		= height * 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_cooked_font *font)
+{
+	struct sti_blkmv_inptr *inptr = &sti->sti_data->blkmv_inptr;
+	struct sti_blkmv_inptr inptr_default = {
+		.src_x		= src_x * font->width,
+		.src_y		= src_y * font->height,
+		.dest_x		= dst_x * font->width,
+		.dest_y		= dst_y * font->height,
+		.width		= width * font->width,
+		.height		= height * 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)
+		strscpy(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;
+static int font_index,
+	   font_height,
+	   font_width;
+#ifndef MODULE
+static int sti_font_setup(char *str)
+{
+	/*
+	 * The default font can be selected in various ways.
+	 * a) sti_font=VGA8x16, sti_font=10x20, sti_font=10*20 selects
+	 *    an built-in Linux framebuffer font.
+	 * b) sti_font=<index>, where index is (1..x) with 1 selecting
+	 *    the first HP STI ROM built-in font..
+	 */
+
+	if (*str >= '0' && *str <= '9') {
+		char *x;
+
+		if ((x = strchr(str, 'x')) || (x = strchr(str, '*'))) {
+			font_height = simple_strtoul(str, NULL, 0);
+			font_width = simple_strtoul(x+1, NULL, 0);
+		} else {
+			font_index = simple_strtoul(str, NULL, 0);
+		}
+	} else {
+		font_name = str;	/* fb font name */
+	}
+
+	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>	(<number> = 1,2,3,...)
+ *		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;
+	
+	pr_debug("%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);
+	pr_debug("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)
+{
+	pr_debug("%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)) {
+				pr_warn("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];
+		
+		pr_debug("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)
+		pr_warn("future ptr (0x%8x) not yet supported !\n",
+			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("    using %ux%u framebuffer font %s\n",
+			fbfont->width, fbfont->height, fbfont->name);
+			
+	bpc = ((fbfont->width+7)/8) * fbfont->height; 
+	size = bpc * fbfont->charcount;
+	size += sizeof(struct sti_rom_font);
+
+	nf = kzalloc(size, STI_LOWMEM);
+	if (!nf)
+		return NULL;
+
+	nf->first_char = 0;
+	nf->last_char = fbfont->charcount - 1;
+	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 * fbfont->charcount);
+
+	cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL);
+	if (!cooked_font) {
+		kfree(nf);
+		return NULL;
+	}
+	
+	cooked_font->raw = nf;
+	cooked_font->raw_ptr = 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 void sti_dump_font(struct sti_cooked_font *font)
+{
+#ifdef STI_DUMP_FONT
+	unsigned char *p = (unsigned char *)font->raw;
+	int n;
+
+	p += sizeof(struct sti_rom_font);
+	pr_debug("  w %d h %d bpc %d\n", font->width, font->height,
+					font->raw->bytes_per_char);
+
+	for (n = 0; n < 256 * font->raw->bytes_per_char; n += 16, p += 16) {
+		pr_debug("        0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x,"
+			" 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x,"
+			" 0x%02x, 0x%02x, 0x%02x, 0x%02x,\n",
+			p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8],
+			p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
+	}
+#endif
+}
+
+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;
+}
+
+static struct sti_cooked_font *sti_select_font(struct sti_cooked_rom *rom)
+{
+	struct sti_cooked_font *font;
+	int i;
+
+	/* check for framebuffer-font first */
+	if (!font_index) {
+		font = sti_select_fbfont(rom, font_name);
+		if (font)
+			return font;
+	}
+
+	if (font_width && font_height)
+		font_index = sti_search_font(rom,
+				font_height, font_width);
+
+	for (font = rom->font_start, i = font_index - 1;
+		font && (i > 0);
+		font = font->next_font, i--);
+
+	if (font)
+		return font;
+	else
+		return rom->font_start;
+}
+
+
+static void sti_dump_rom(struct sti_struct *sti)
+{
+	struct sti_rom *rom = sti->rom->raw;
+	struct sti_cooked_font *font_start;
+	int nr;
+
+	pr_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);
+	pr_debug("  supports %d monitors\n", rom->num_mons);
+	pr_debug("  font start %08x\n", rom->font_start);
+	pr_debug("  region list %08x\n", rom->region_list);
+	pr_debug("  init_graph %08x\n", rom->init_graph);
+	pr_debug("  bus support %02x\n", rom->bus_support);
+	pr_debug("  ext bus support %02x\n", rom->ext_bus_support);
+	pr_debug("  alternate code type %d\n", rom->alt_code_type);
+
+	font_start = sti->rom->font_start;
+	nr = 0;
+	while (font_start) {
+		struct sti_rom_font *f = font_start->raw;
+
+		pr_info("    built-in font #%d: size %dx%d, chars %d-%d, bpc %d\n", ++nr,
+			f->width, f->height,
+			f->first_char, f->last_char, f->bytes_per_char);
+		font_start = font_start->next_font;
+	}
+}
+
+
+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;
+}
+
+#define BMODE_RELOCATE(offset)		offset = (offset) / 4;
+#define BMODE_LAST_ADDR_OFFS		0x50
+
+void sti_font_convert_bytemode(struct sti_struct *sti, struct sti_cooked_font *f)
+{
+	unsigned char *n, *p, *q;
+	int size = f->raw->bytes_per_char * (f->raw->last_char + 1) + sizeof(struct sti_rom_font);
+	struct sti_rom_font *old_font;
+
+	if (sti->wordmode)
+		return;
+
+	old_font = f->raw_ptr;
+	n = kcalloc(4, size, STI_LOWMEM);
+	f->raw_ptr = n;
+	if (!n)
+		return;
+	p = n + 3;
+	q = (unsigned char *) f->raw;
+	while (size--) {
+		*p = *q++;
+		p += 4;
+	}
+	/* store new ptr to byte-mode font and delete old font */
+	f->raw = (struct sti_rom_font *) (n + 3);
+	kfree(old_font);
+}
+EXPORT_SYMBOL(sti_font_convert_bytemode);
+
+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)) {
+		pr_warn("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 %s ROM supports 32 %sbit firmware functions.\n",
+		wordmode ? "word mode" : "byte mode",
+		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_dump_rom(sti);
+
+	sti->wordmode = wordmode;
+	sti->font = sti_select_font(sti->rom);
+	sti->font->width = sti->font->raw->width;
+	sti->font->height = sti->font->raw->height;
+	sti_font_convert_bytemode(sti, sti->font);
+	sti_dump_font(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];
+
+	/* 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:
+	pr_warn("Sorry, this GSC/STI card is not yet supported.\n");
+	pr_warn("Please see https://parisc.wiki.kernel.org/"
+		"index.php/Graphics_howto 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) {
+		pr_warn("maximum number of STI ROMS reached !\n");
+		return NULL;
+	}
+	
+	sti = kzalloc(sizeof(*sti), GFP_KERNEL);
+	if (!sti)
+		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,...) */
+			pr_warn("PCI ROM is not a STI ROM type image (0x%8x)\n", i);
+			goto out_err;
+		}
+		
+		sti->pd = pd;
+
+		i = gsc_readl(address+0x0c);
+		pr_debug("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);
+		}
+
+		address += le32_to_cpu(gsc_readl(address+8));
+		pr_debug("sig %04x, PCI STI ROM at %08lx\n", sig, address);
+		goto test_rom;
+	}
+	
+	ok = 0;
+	
+	if ((sig & 0xff) == 0x01) {
+		pr_debug("    byte mode ROM at %08lx, hpa at %08lx\n",
+		       address, hpa);
+		ok = sti_read_rom(0, sti, address);
+	}
+
+	if ((sig & 0xffff) == 0x0303) {
+		pr_debug("    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);
+		pr_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)
+{
+	pr_info("    located at [%s]\n", sti->pa_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)
+{
+	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, sti->pa_path);
+	sticore_check_for_default_sti(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);
+		pr_debug("STI PCI ROM enabled at 0x%08lx\n", rom_base);
+	}
+
+	pr_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);
+
+	pr_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) {
+		print_pci_hwpath(pd, sti->pa_path);
+		sticore_check_for_default_sti(sti, sti->pa_path);
+	}
+	
+	if (!sti) {
+		pr_warn("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;
+
+	pr_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;
+}
+
+#if defined(CONFIG_FB_STI)
+/* check if given fb_info is the primary device */
+int fb_is_primary_device(struct fb_info *info)
+{
+	struct sti_struct *sti;
+
+	sti = sti_get_rom(0);
+
+	/* if no built-in graphics card found, allow any fb driver as default */
+	if (!sti)
+		return true;
+
+	/* return true if it's the default built-in framebuffer driver */
+	return (sti->info == info);
+}
+EXPORT_SYMBOL(fb_is_primary_device);
+#endif
+
+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");
+