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/*
TPG CVS users: please don't commit changes to this file directly, send
them to prumpf@tux.org and wait for a new version instead. Otherwise,
your changes will get lost when prumpf releases the next version, as
this file *will* be replaced with it. You have been warned.
2000-05-30, <deller@gmx.de>
*/
#if 1
#define DPRINTK(x) printk x
#else
#define DPRINTK(x)
#endif
/*
* linux/drivers/video/sticon.c - console driver using HP's STI firmware
*
* Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
*
* Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c,
* which were
*
* Created 28 Sep 1997 by Geert Uytterhoeven
* Rewritten by Martin Mares <mj@ucw.cz>, July 1998
* Copyright (C) 1991, 1992 Linus Torvalds
* 1995 Jay Estabrook
* Copyright (C) 1995 Geert Uytterhoeven
* Copyright (C) 1993 Bjoern Brauel
* Roman Hodek
* Copyright (C) 1993 Hamish Macdonald
* Greg Harp
* Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
*
* with work by William Rucklidge (wjr@cs.cornell.edu)
* Geert Uytterhoeven
* Jes Sorensen (jds@kom.auc.dk)
* Martin Apel
* with work by Guenther Kelleter
* Martin Schaller
* Andreas Schwab
* Emmanuel Marty (core@ggi-project.org)
* Jakub Jelinek (jj@ultra.linux.cz)
* Martin Mares <mj@ucw.cz>
*
* 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.
*/
/*
* TODO:
* - call STI in virtual mode rather than in real mode
* - support for PCI-only STI ROMs (which don't have a traditional region
* list)
* - safe detection (i.e. verify there is a graphics device at a given
* address first, not just read a random device's io space)
* - support for multiple STI devices in one machine
* - support for byte-mode STI ROMs
* - support for just using STI to switch to a colour fb (stifb ?)
* - try to make it work on m68k hp workstations ;)
*/
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/console.h>
#include <linux/string.h>
#include <linux/kd.h>
#include <linux/slab.h>
#include <linux/vt_kern.h>
#include <linux/selection.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/real.h>
#include <linux/module.h>
#include <linux/fb.h>
#include <linux/smp.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <video/fbcon.h>
#include <video/font.h>
#include "sti-bmode.h"
/* The latency of the STI functions cannot really be reduced by setting
* this to 0; STI doesn't seem to be designed to allow calling a different
* function (or the same function with different arguments) after a
* function exited with 1 as return value.
*
* As all of the functions below could be called from interrupt context,
* we have to spin_lock_irqsave around the do { ret = bla(); } while(ret==1)
* block. Really bad latency there.
*
* Probably the best solution to all this is have the generic code manage
* the screen buffer and a kernel thread to call STI occasionally.
*
* Luckily, the frame buffer guys have the same problem so we can just wait
* for them to fix it and steal their solution. prumpf
*
* Actually, another long-term viable solution is to completely do STI
* support in userspace - that way we avoid the potential license issues
* of using proprietary fonts, too. */
#define STI_WAIT 1
#define STI_PTR(p) ( (typeof(p)) virt_to_phys(p))
#define PTR_STI(p) ( (typeof(p)) phys_to_virt((unsigned long)p) )
static struct sti_struct default_sti = {
SPIN_LOCK_UNLOCKED,
};
static struct sti_font_flags default_font_flags = {
STI_WAIT, 0, 0, NULL
};
/* 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 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)
#define sti_onscreen_x(sti) (PTR_STI(sti->glob_cfg)->onscreen_x)
#define sti_onscreen_y(sti) (PTR_STI(sti->glob_cfg)->onscreen_y)
#define sti_font_x(sti) (STI_U8(PTR_STI(sti->font)->width))
#define sti_font_y(sti) (STI_U8(PTR_STI(sti->font)->height))
static struct sti_init_flags default_init_flags = {
STI_WAIT, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, NULL
};
static void sti_init_graph(struct sti_struct *sti)
{
struct sti_init_inptr_ext inptr_ext = {
0, { 0 }, 0, NULL
};
struct sti_init_inptr inptr = {
3, STI_PTR(&inptr_ext)
};
struct sti_init_outptr outptr = { 0 };
unsigned long flags;
s32 ret;
spin_lock_irqsave(&sti->lock, flags);
ret = STI_CALL(sti->init_graph, &default_init_flags, &inptr,
&outptr, sti->glob_cfg);
spin_unlock_irqrestore(&sti->lock, flags);
sti->text_planes = outptr.text_planes;
}
#if 0
static struct sti_conf_flags default_conf_flags = {
STI_WAIT, 0, NULL
};
static void sti_inq_conf(struct sti_struct *sti)
{
struct sti_conf_inptr inptr = { NULL };
struct sti_conf_outptr_ext outptr_ext = { future_ptr: NULL };
struct sti_conf_outptr outptr = {
ext_ptr: STI_PTR(&outptr_ext)
};
unsigned long flags;
s32 ret;
do {
spin_lock_irqsave(&sti->lock, flags);
ret = STI_CALL(sti->inq_conf, &default_conf_flags,
&inptr, &outptr, sti->glob_cfg);
spin_unlock_irqrestore(&sti->lock, flags);
} while(ret == 1);
}
#endif
static void sti_putc(struct sti_struct *sti, int c, int y, int x)
{
struct sti_font_inptr inptr = {
(u32) sti->font, c_index(sti, c), c_fg(sti, c), c_bg(sti, c),
x * sti_font_x(sti), y * sti_font_y(sti), NULL
};
struct sti_font_outptr outptr = {
0, NULL
};
s32 ret;
unsigned long flags;
do {
spin_lock_irqsave(&sti->lock, flags);
ret = STI_CALL(sti->font_unpmv, &default_font_flags,
&inptr, &outptr, sti->glob_cfg);
spin_unlock_irqrestore(&sti->lock, flags);
} while(ret == 1);
}
static struct sti_blkmv_flags clear_blkmv_flags = {
STI_WAIT, 1, 1, 0, 0, NULL
};
static void sti_set(struct sti_struct *sti, int src_y, int src_x,
int height, int width, u8 color)
{
struct sti_blkmv_inptr inptr = {
color, color,
src_x, src_y ,
src_x, src_y ,
width, height,
NULL
};
struct sti_blkmv_outptr outptr = { 0, NULL };
s32 ret = 0;
unsigned long flags;
do {
spin_lock_irqsave(&sti->lock, flags);
ret = STI_CALL(sti->block_move, &clear_blkmv_flags,
&inptr, &outptr, sti->glob_cfg);
spin_unlock_irqrestore(&sti->lock, flags);
} while(ret == 1);
}
static void sti_clear(struct sti_struct *sti, int src_y, int src_x,
int height, int width)
{
struct sti_blkmv_inptr inptr = {
0, 0,
src_x * sti_font_x(sti), src_y * sti_font_y(sti),
src_x * sti_font_x(sti), src_y * sti_font_y(sti),
width * sti_font_x(sti), height* sti_font_y(sti),
NULL
};
struct sti_blkmv_outptr outptr = { 0, NULL };
s32 ret = 0;
unsigned long flags;
do {
spin_lock_irqsave(&sti->lock, flags);
ret = STI_CALL(sti->block_move, &clear_blkmv_flags,
&inptr, &outptr, sti->glob_cfg);
spin_unlock_irqrestore(&sti->lock, flags);
} while(ret == 1);
}
static struct sti_blkmv_flags default_blkmv_flags = {
STI_WAIT, 0, 0, 0, 0, NULL
};
static 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 = {
0, 0,
src_x * sti_font_x(sti), src_y * sti_font_y(sti),
dst_x * sti_font_x(sti), dst_y * sti_font_y(sti),
width * sti_font_x(sti), height* sti_font_y(sti),
NULL
};
struct sti_blkmv_outptr outptr = { 0, NULL };
s32 ret = 0;
unsigned long flags;
do {
spin_lock_irqsave(&sti->lock, flags);
ret = STI_CALL(sti->block_move, &default_blkmv_flags,
&inptr, &outptr, sti->glob_cfg);
spin_unlock_irqrestore(&sti->lock, flags);
} while(ret == 1);
}
/* STICON */
static const char __init *sticon_startup(void)
{
return "STI console";
}
static int sticon_set_palette(struct vc_data *c, unsigned char *table)
{
return -EINVAL;
}
static int sticon_font_op(struct vc_data *c, struct console_font_op *op)
{
return -ENOSYS;
}
static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
{
sti_putc(&default_sti, c, ypos, xpos);
}
static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
int count, int ypos, int xpos)
{
while(count--) {
sti_putc(&default_sti, scr_readw(s++), ypos, xpos++);
}
}
static void sticon_cursor(struct vc_data *conp, int mode)
{
}
static int sticon_scroll(struct vc_data *conp, int t, int b, int dir,
int count)
{
struct sti_struct *sti = &default_sti;
if(console_blanked)
return 0;
sticon_cursor(conp, CM_ERASE);
switch(dir) {
case SM_UP:
sti_bmove(sti, t+count, 0, t, 0, b-t-count, conp->vc_cols);
sti_clear(sti, b-count, 0, count, conp->vc_cols);
break;
case SM_DOWN:
sti_bmove(sti, t, 0, t+count, 0, b-t-count, conp->vc_cols);
sti_clear(sti, t, 0, count, conp->vc_cols);
break;
}
return 0;
}
static void sticon_bmove(struct vc_data *conp, int sy, int sx, int dy, int dx,
int height, int width)
{
sti_bmove(&default_sti, sy, sx, dy, dx, height, width);
}
static void sticon_init(struct vc_data *c, int init)
{
struct sti_struct *sti = &default_sti;
int vc_cols, vc_rows;
sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
c->vc_can_do_color = 1;
vc_cols = PTR_STI(sti->glob_cfg)->onscreen_x / sti_font_x(sti);
vc_rows = PTR_STI(sti->glob_cfg)->onscreen_y / sti_font_y(sti);
vc_resize_con(vc_rows, vc_cols, c->vc_num);
}
static void sticon_deinit(struct vc_data *c)
{
}
static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
int width)
{
sti_clear(&default_sti, sy, sx, height, width);
}
static int sticon_switch(struct vc_data *conp)
{
return 0;
}
static int sticon_blank(struct vc_data *conp, int blank)
{
return 0;
}
static int sticon_scrolldelta(struct vc_data *conp, int lines)
{
return 0;
}
static int sticon_set_origin(struct vc_data *conp)
{
return 0;
}
static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens, u8 blink, u8 underline, u8 reverse)
{
u8 attr = ((color & 0x70) >> 1) | ((color & 7));
if(reverse) {
color = ((color>>3)&0x7) | ((color &0x7)<<3);
}
return attr;
}
static struct consw sti_con = {
con_startup: sticon_startup,
con_init: sticon_init,
con_deinit: sticon_deinit,
con_clear: sticon_clear,
con_putc: sticon_putc,
con_putcs: sticon_putcs,
con_cursor: sticon_cursor,
con_scroll: sticon_scroll,
con_bmove: sticon_bmove,
con_switch: sticon_switch,
con_blank: sticon_blank,
con_font_op: sticon_font_op,
con_set_palette: sticon_set_palette,
con_scrolldelta: sticon_scrolldelta,
con_set_origin: sticon_set_origin,
con_build_attr: sticon_build_attr,
};
#include <asm/pgalloc.h> /* need cache flush routines */
static void __init sti_rom_copy(unsigned long base, unsigned long offset,
unsigned long count, void *dest)
{
void *savedest = dest;
int savecount = count;
while(count >= 4) {
count -= 4;
*(u32 *)dest = gsc_readl(base + offset);
#if 0
DPRINTK(("%08x\n", *(u32 *)dest));
if(*(u32 *)dest == 0x64646464) {
DPRINTK(("!!!!\n"));
{ u32 foo = 0; while(foo += 0x100); }
}
#endif
offset += 4;
dest += 4;
}
while(count) {
count--;
*(u8 *)dest = gsc_readb(base + offset);
offset++;
dest++;
}
flush_kernel_dcache_range((unsigned long)dest, count);
flush_icache_range((unsigned long)dest, dest + count);
}
static void dump_sti_rom(struct sti_rom *rom)
{
printk("STI byte mode ROM type %d\n", STI_U8(rom->type));
printk(" supports %d monitors\n", STI_U8(rom->num_mons));
printk(" conforms to STI ROM spec revision %d.%02x\n",
STI_U8(rom->revno[0]) >> 4, STI_U8(rom->revno[0]) & 0x0f);
printk(__FUNCTION__ ": %d\n", __LINE__);
printk(" graphics id %02x%02x%02x%02x%02x%02x%02x%02x\n",
(unsigned int) STI_U8(rom->graphics_id[0]),
(unsigned int) STI_U8(rom->graphics_id[1]),
(unsigned int) STI_U8(rom->graphics_id[2]),
(unsigned int) STI_U8(rom->graphics_id[3]),
(unsigned int) STI_U8(rom->graphics_id[4]),
(unsigned int) STI_U8(rom->graphics_id[5]),
(unsigned int) STI_U8(rom->graphics_id[6]),
(unsigned int) STI_U8(rom->graphics_id[7]));
printk(__FUNCTION__ ": %d\n", __LINE__);
printk(" font start %08x\n", STI_U32(rom->font_start));
printk(__FUNCTION__ ": %d\n", __LINE__);
printk(" region list %08x\n", STI_U32(rom->region_list));
printk(__FUNCTION__ ": %d\n", __LINE__);
printk(" init_graph %08x\n", STI_U32(rom->init_graph));
printk(__FUNCTION__ ": %d\n", __LINE__);
printk(" alternate code type %d\n", STI_U8(rom->alt_code_type));
printk(__FUNCTION__ ": %d\n", __LINE__);
}
static void __init sti_cook_fonts(struct sti_cooked_rom *cooked_rom,
struct sti_rom *raw_rom)
{
struct sti_rom_font *raw_font;
struct sti_cooked_font *cooked_font;
struct sti_rom_font *font_start;
cooked_font =
kmalloc(sizeof *cooked_font, GFP_KERNEL);
if(!cooked_font)
return;
cooked_rom->font_start = cooked_font;
#if 0
DPRINTK(("%p = %p + %08x\n",
((void *)raw_rom) + (STI_U32(raw_rom->font_start)),
((void *)raw_rom), (STI_U32(raw_rom->font_start))));
#endif
raw_font = ((void *)raw_rom) + STI_U32(raw_rom->font_start) - 3;
font_start = raw_font;
cooked_font->raw = raw_font;
DPRINTK(("next font %08x\n", STI_U32(raw_font->next_font)));
while(0 && STI_U32(raw_font->next_font)) {
raw_font = ((void *)font_start) + STI_U32(raw_font->next_font);
cooked_font->next_font =
kmalloc(sizeof *cooked_font, GFP_KERNEL);
if(!cooked_font->next_font)
return;
cooked_font = cooked_font->next_font;
// cooked_font->raw = raw_font;
DPRINTK(("raw_font %p\n",
raw_font));
DPRINTK(("next_font %08x %p\n",
STI_U32(raw_font->next_font),
((void *)font_start) + STI_U32(raw_font->next_font)));
}
cooked_font->next_font = NULL;
}
static unsigned long __init sti_cook_function(void *function,
u32 size)
{
sti_u32 *func = (sti_u32 *)function;
u32 *ret;
int i;
ret = kmalloc(size, GFP_KERNEL);
if(!ret) {
printk(KERN_ERR __FILE__ ": could not get memory.\n");
return 0;
}
for(i=0; i<(size/4); i++)
ret[i] = STI_U32(func[i]);
flush_all_caches();
return virt_to_phys(ret);
}
static int font_index, font_height, font_width;
static int __init 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((STI_U8(font->raw->width) == width) &&
(STI_U8(font->raw->height) == height))
return i;
}
return 0;
}
static struct sti_cooked_font * __init
sti_select_font(struct sti_cooked_rom *rom)
{
struct sti_cooked_font *font;
int i;
if(font_width && font_height)
font_index = sti_search_font(rom, font_height, font_width);
for(font = rom->font_start, i = font_index;
font && (i > 0);
font = font->next_font, i--);
if(font)
return font;
else
return rom->font_start;
}
/* address is a pointer to a word mode or pci rom */
static struct sti_struct * __init sti_read_rom(unsigned long address)
{
struct sti_struct *ret = NULL;
struct sti_cooked_rom *cooked = NULL;
struct sti_rom *raw = NULL;
unsigned long size;
ret = &default_sti;
if(!ret)
goto out_err;
cooked = kmalloc(sizeof *cooked, GFP_KERNEL);
raw = kmalloc(sizeof *raw, GFP_KERNEL);
if(!(raw && cooked))
goto out_err;
/* reallocate raw */
sti_rom_copy(address, 0, sizeof *raw, raw);
dump_sti_rom(raw);
size = STI_U32(raw->last_addr) + 1;
size = 128*1024;
// DPRINTK(("size %08lx\n", size));
// DPRINTK(("font_start %08x\n", STI_U32(raw->font_start)));
// kfree(raw);
raw = kmalloc(size, GFP_KERNEL);
if(!raw)
goto out_err;
sti_rom_copy(address, 0, size-1, raw);
sti_cook_fonts(cooked, raw);
// sti_cook_regions(cooked, raw);
// sti_cook_functions(cooked, raw);
if(STI_U32(raw->region_list)) {
struct sti_rom_region *region =
((void *)raw) + STI_U32(raw->region_list) - 3;
// DPRINTK(("region_list %08x\n", STI_U32(raw->region_list)));
ret->regions = kmalloc(32, GFP_KERNEL); /* FIXME!! */
ret->regions[0] = STI_U32(region[0].region);
ret->regions[1] = STI_U32(region[1].region);
ret->regions[2] = STI_U32(region[2].region);
ret->regions[3] = STI_U32(region[3].region);
ret->regions[4] = STI_U32(region[4].region);
ret->regions[5] = STI_U32(region[5].region);
ret->regions[6] = STI_U32(region[6].region);
ret->regions[7] = STI_U32(region[7].region);
}
address = virt_to_phys(raw);
#if 0
DPRINTK(("init_graph %08x %08x\n"
"state_mgmt %08x %08x\n"
"font_unpmv %08x %08x\n"
"block_move %08x %08x\n"
"self_test %08x %08x\n"
"excep_hdlr %08x %08x\n"
"irq_conf %08x %08x\n"
"set_cm_e %08x %08x\n"
"dma_ctrl %08x %08x\n"
"flow_ctrl %08x %08x\n"
"user_timin %08x %08x\n"
"process_m %08x %08x\n"
"sti_util %08x %08x\n"
"end_addr %08x %08x\n",
STI_U32(raw->init_graph), STI_U32(raw->init_graph_m68k),
STI_U32(raw->state_mgmt), STI_U32(raw->state_mgmt_m68k),
STI_U32(raw->font_unpmv), STI_U32(raw->font_unpmv_m68k),
STI_U32(raw->block_move), STI_U32(raw->block_move_m68k),
STI_U32(raw->self_test), STI_U32(raw->self_test_m68k),
STI_U32(raw->excep_hdlr), STI_U32(raw->excep_hdlr_m68k),
STI_U32(raw->init_graph), STI_U32(raw->init_graph_m68k),
STI_U32(raw->init_graph), STI_U32(raw->init_graph_m68k),
STI_U32(raw->init_graph), STI_U32(raw->init_graph_m68k),
STI_U32(raw->init_graph), STI_U32(raw->init_graph_m68k),
STI_U32(raw->init_graph), STI_U32(raw->init_graph_m68k),
STI_U32(raw->init_graph), STI_U32(raw->init_graph_m68k),
STI_U32(raw->init_graph), STI_U32(raw->init_graph_m68k),
STI_U32(raw->end_addr), STI_U32(raw->end_addr_m68k) ) );
#endif
ret->init_graph = sti_cook_function(((void *)raw)+STI_U32(raw->init_graph)-3,
(STI_U32(raw->state_mgmt) -
STI_U32(raw->init_graph))/4);
ret->font_unpmv = sti_cook_function(((void *)raw)+STI_U32(raw->font_unpmv)-3,
(STI_U32(raw->block_move) -
STI_U32(raw->font_unpmv))/4);
ret->block_move = sti_cook_function(((void *)raw)+STI_U32(raw->block_move)-3,
(STI_U32(raw->self_test) -
STI_U32(raw->block_move))/4);
ret->inq_conf = sti_cook_function(((void *)raw)+STI_U32(raw->inq_conf),
STI_U32(raw->set_cm_entry) -
STI_U32(raw->inq_conf));
ret->rom = cooked;
ret->rom->raw = raw;
ret->font = (struct sti_rom_font *) virt_to_phys(sti_select_font(ret->rom)->raw);
return ret;
out_err:
if(raw)
kfree(raw);
if(cooked)
kfree(cooked);
return NULL;
}
#if 0
static void dump_globcfg_ext(struct sti_glob_cfg_ext *cfg)
{
DPRINTK(("monitor %d\n"
"in friendly mode: %d\n"
"power consumption %d watts\n"
"freq ref %d\n"
"sti_mem_addr %p\n",
cfg->curr_mon,
cfg->friendly_boot,
cfg->power,
cfg->freq_ref,
cfg->sti_mem_addr));
}
static void dump_globcfg(struct sti_glob_cfg *glob_cfg)
{
DPRINTK(("%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 %p\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_globcfg_ext(PTR_STI(glob_cfg->ext_ptr));
}
#endif
static void __init sti_init_glob_cfg(struct sti_struct *sti, unsigned long hpa,
unsigned long rom_address)
{
struct sti_glob_cfg *glob_cfg;
struct sti_glob_cfg_ext *glob_cfg_ext;
void *save_addr;
void *sti_mem_addr;
glob_cfg = kmalloc(sizeof *sti->glob_cfg, GFP_KERNEL);
glob_cfg_ext = kmalloc(sizeof *glob_cfg_ext, GFP_KERNEL);
save_addr = kmalloc(1024 /*XXX*/, GFP_KERNEL);
sti_mem_addr = kmalloc(1024, GFP_KERNEL);
if((!glob_cfg) || (!glob_cfg_ext) || (!save_addr) || (!sti_mem_addr))
return;
memset(glob_cfg, 0, sizeof *glob_cfg);
memset(glob_cfg_ext, 0, sizeof *glob_cfg_ext);
memset(save_addr, 0, 1024);
memset(sti_mem_addr, 0, 1024);
glob_cfg->ext_ptr = STI_PTR(glob_cfg_ext);
glob_cfg->save_addr = STI_PTR(save_addr);
glob_cfg->region_ptrs[0] = ((sti->regions[0]>>18)<<12) + rom_address;
glob_cfg->region_ptrs[1] = ((sti->regions[1]>>18)<<12) + hpa;
glob_cfg->region_ptrs[2] = ((sti->regions[2]>>18)<<12) + hpa;
glob_cfg->region_ptrs[3] = ((sti->regions[3]>>18)<<12) + hpa;
glob_cfg->region_ptrs[4] = ((sti->regions[4]>>18)<<12) + hpa;
glob_cfg->region_ptrs[5] = ((sti->regions[5]>>18)<<12) + hpa;
glob_cfg->region_ptrs[6] = ((sti->regions[6]>>18)<<12) + hpa;
glob_cfg->region_ptrs[7] = ((sti->regions[7]>>18)<<12) + hpa;
glob_cfg_ext->sti_mem_addr = STI_PTR(sti_mem_addr);
sti->glob_cfg = STI_PTR(glob_cfg);
}
static void __init sti_try_rom(unsigned long address, unsigned long hpa)
{
struct sti_struct *sti = NULL;
u16 sig;
/* 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((void*)address))
return;
printk("found potential STI ROM at %08lx\n", address);
sig = le16_to_cpu(gsc_readw(address));
if((sig&0xff) == 0x01) {
sti = sti_read_rom(address);
}
if(sig == 0x0303) {
printk("STI word mode ROM at %08lx, ignored\n",
address);
sti = NULL;
}
if(!sti)
return;
/* this is hacked. We need a better way to find out the HPA for
* romless STI (eg search for the graphics devices we know about
* by sversion) */
if (!pdc_add_valid((void *)0xf5000000)) DPRINTK(("f4000000 b\n"));
if (!pdc_add_valid((void *)0xf7000000)) DPRINTK(("f6000000 b\n"));
if (!pdc_add_valid((void *)0xf9000000)) DPRINTK(("f8000000 b\n"));
if (!pdc_add_valid((void *)0xfb000000)) DPRINTK(("fa000000 b\n"));
sti_init_glob_cfg(sti, hpa, address);
sti_init_graph(sti);
//sti_inq_conf(sti);
#if !defined(SERIAL_CONSOLE)
{
extern void pdc_console_die(void);
pdc_console_die();
}
#endif
take_over_console(&sti_con, 0, MAX_NR_CONSOLES-1, 1);
/* sti_inq_conf(sti); */
}
static unsigned long sti_address;
static unsigned long sti_hpa;
static void __init sti_init_roms(void)
{
/* handle the command line */
if(sti_address && sti_hpa) {
sti_try_rom(sti_address, sti_hpa);
return;
}
/* 712, 715, some other boxes don't have a separate STI ROM,
* but use part of the regular flash */
if(PAGE0->proc_sti) {
printk("STI ROM from PDC at %08x\n", PAGE0->proc_sti);
if(!pdc_add_valid((void *)0xf9000000))
sti_try_rom(PAGE0->proc_sti, 0xf8000000);
else if(!pdc_add_valid((void *)0xf5000000))
sti_try_rom(PAGE0->proc_sti, 0xf4000000);
else if(!pdc_add_valid((void *)0xf7000000))
sti_try_rom(PAGE0->proc_sti, 0xf6000000);
else if(!pdc_add_valid((void *)0xfb000000))
sti_try_rom(PAGE0->proc_sti, 0xfa000000);
}
/* standard locations for GSC graphic devices */
if(!pdc_add_valid((void *)0xf4000000))
sti_try_rom(0xf4000000, 0xf4000000);
if(!pdc_add_valid((void *)0xf6000000))
sti_try_rom(0xf6000000, 0xf6000000);
if(!pdc_add_valid((void *)0xf8000000))
sti_try_rom(0xf8000000, 0xf8000000);
if(!pdc_add_valid((void *)0xfa000000))
sti_try_rom(0xfa000000, 0xfa000000);
}
static int __init sti_init(void)
{
printk("searching for byte mode STI ROMs\n");
sti_init_roms();
return 0;
}
module_init(sti_init)
MODULE_LICENSE("GPL");
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