Viewing file:  sticore.c (14.05 KB) -rw-r--r--
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#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <asm/io.h>
#include "sti.h"
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)
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
};
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;
}
static struct sti_conf_flags default_conf_flags = {
STI_WAIT, 0, NULL
};
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);
}
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
};
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);
}
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
};
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);
}
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);
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 word mode ROM type %d\n", rom->type[3]);
printk(" supports %d monitors\n", rom->num_mons);
printk(" conforms to STI ROM spec revision %d.%02x\n",
rom->revno[0] >> 4, rom->revno[0] & 0x0f);
printk(" graphics id %02x%02x%02x%02x%02x%02x%02x%02x\n",
rom->graphics_id[0],
rom->graphics_id[1],
rom->graphics_id[2],
rom->graphics_id[3],
rom->graphics_id[4],
rom->graphics_id[5],
rom->graphics_id[6],
rom->graphics_id[7]);
printk(" font start %08x\n", rom->font_start);
printk(" region list %08x\n", rom->region_list);
printk(" init_graph %08x\n", rom->init_graph);
printk(" alternate code type %d\n", rom->alt_code_type);
}
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;
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 =
kmalloc(sizeof *cooked_font, GFP_KERNEL);
if(!cooked_font->next_font)
return;
cooked_font = cooked_font->next_font;
cooked_font->raw = raw_font;
}
cooked_font->next_font = NULL;
}
static int font_index, font_height, font_width;
static int __init sti_font_setup(char *str)
{
char *x;
/* we accept sti_font=10x20, sti_font=10*20 or sti_font=7 style
* command lines. */
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);
}
return 0;
}
__setup("sti_font=", sti_font_setup);
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((font->raw->width == width) && (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;
}
static void __init
sti_dump_globcfg_ext(struct sti_glob_cfg_ext *cfg)
{
printk( "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);
}
void __init
sti_dump_globcfg(struct sti_glob_cfg *glob_cfg)
{
printk( "%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);
sti_dump_globcfg_ext(PTR_STI(glob_cfg->ext_ptr));
}
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);
}
/* 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 = raw->last_addr;
/* kfree(raw); */
raw = kmalloc(size, GFP_KERNEL);
if(!raw)
goto out_err;
sti_rom_copy(address, 0, size, raw);
sti_cook_fonts(cooked, raw);
#if 0
sti_cook_regions(cooked, raw);
sti_cook_functions(cooked, raw);
#endif
if(raw->region_list) {
ret->regions = kmalloc(32, GFP_KERNEL); /* FIXME */
memcpy(ret->regions, ((void *)raw)+raw->region_list, 32);
}
address = virt_to_phys(raw);
ret->font_unpmv = address+(raw->font_unpmv & 0x03ffffff);
ret->block_move = address+(raw->block_move & 0x03ffffff);
ret->init_graph = address+(raw->init_graph & 0x03ffffff);
ret->inq_conf = address+(raw->inq_conf & 0x03ffffff);
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;
}
static struct sti_struct * __init
sti_try_rom(unsigned long address, unsigned long hpa)
{
struct sti_struct *sti = NULL;
u16 sig;
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((void*)address))
return NULL;
printk("found potential STI ROM at %08lx\n", address);
sig = le16_to_cpu(gsc_readw(address));
if((sig==0x55aa) || (sig==0xaa55)) {
address += le32_to_cpu(gsc_readl(address+8));
printk("sig %04x, PCI STI ROM at %08lx\n",
sig, address);
goto test_rom;
}
if((sig&0xff) == 0x01) {
printk("STI byte mode ROM at %08lx, ignored\n",
address);
sti = NULL;
}
if(sig == 0x0303) {
printk("STI word mode ROM at %08lx\n",
address);
sti = sti_read_rom(address);
}
if (!sti)
return NULL;
/* 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)) printk("f4000000 g\n");
if (!pdc_add_valid((void *)0xf7000000)) printk("f6000000 g\n");
if (!pdc_add_valid((void *)0xf9000000)) printk("f8000000 g\n");
if (!pdc_add_valid((void *)0xfb000000)) printk("fa000000 g\n");
sti_init_glob_cfg(sti, hpa, address);
sti_init_graph(sti);
sti_inq_conf(sti);
sti_dump_globcfg(PTR_STI(sti->glob_cfg));
return sti;
}
static unsigned long sti_address;
static unsigned long sti_hpa;
/* XXX: should build a list of STI ROMs */
struct sti_struct * __init
sti_init_roms(void)
{
struct sti_struct *tmp = NULL, *sti = NULL;
/* handle the command line */
if (sti_address && sti_hpa) {
return sti_try_rom(sti_address, sti_hpa);
}
/* 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 = sti_try_rom(PAGE0->proc_sti, 0xf8000000);
else if (!pdc_add_valid((void *)0xf5000000))
sti = sti_try_rom(PAGE0->proc_sti, 0xf4000000);
else if (!pdc_add_valid((void *)0xf7000000))
sti = sti_try_rom(PAGE0->proc_sti, 0xf6000000);
else if (!pdc_add_valid((void *)0xfb000000))
sti = sti_try_rom(PAGE0->proc_sti, 0xfa000000);
}
/* standard locations for GSC graphic devices */
if (!pdc_add_valid((void *)0xf4000000))
tmp = sti_try_rom(0xf4000000, 0xf4000000);
sti = tmp ? tmp : sti;
if (!pdc_add_valid((void *)0xf6000000))
tmp = sti_try_rom(0xf6000000, 0xf6000000);
sti = tmp ? tmp : sti;
if (!pdc_add_valid((void *)0xf8000000))
tmp = sti_try_rom(0xf8000000, 0xf8000000);
sti = tmp ? tmp : sti;
if (!pdc_add_valid((void *)0xfa000000))
tmp = sti_try_rom(0xfa000000, 0xfa000000);
sti = tmp ? tmp : sti;
return sti;
}
static int __init
sti_setup(char *str)
{
char *end;
if(strcmp(str, "pdc") == 0) {
sti_address = PAGE0->proc_sti;
return 1;
} else {
sti_address = simple_strtoul(str, &end, 16);
if((end == str) || (sti_address < 0xf0000000)) {
sti_address = 0;
return 0;
}
sti_hpa = sti_address;
return 1;
}
return 0;
}
__setup("sti=", sti_setup);
MODULE_LICENSE("GPL");
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