sticore.c

linux-2.4.29操作系统的源码

	return NULL;
}
#endif

struct sti_cooked_font * __init
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 __init 
sti_dump_rom(struct sti_rom *rom)
{
        printk(KERN_INFO "STI 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 __init 
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 = kmalloc(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 = kmalloc(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 __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;
}

#define BMODE_RELOCATE(offset)        offset = (offset) / 4;
#define BMODE_LAST_ADDR_OFFS          0x50

static void * __init
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 = kmalloc (4*size, GFP_KERNEL);
	if (!n)
		return NULL;
	memset (n, 0, 4*size);
	p = n + 3;
	q = (unsigned char *)f->raw;
	while (size--) {
		*p = *q++;
		p+=4;
	}
	return n + 3;
}

static void __init
sti_bmode_rom_copy(unsigned long base, unsigned long count, void *dest)
{
	unsigned long dest_len = count;
	unsigned long dest_start = (unsigned long) dest;

	while (count) {
		count--;
		*(u8 *)dest = __raw_readl(base);
		base += 4;
		dest++;
	}
	sti_flush(dest_start, dest_len); /* XXX */
}

struct sti_rom * __init
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, GFP_KERNEL);
	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;
}

struct sti_rom * __init
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 = __raw_readl(address + offsetof(struct sti_rom,last_addr));

	raw = kmalloc(size, GFP_KERNEL);
	if(raw)
	        sti_rom_copy(address, size, raw);

        return raw;
}

int __init
sti_read_rom(int wordmode, struct sti_struct *sti, unsigned long address)
{
	struct sti_cooked_rom *cooked;
	struct sti_rom *raw = NULL;

	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);

	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);
	
	return 1;

out_err:
	if(raw)
		kfree(raw);
	if(cooked)
		kfree(cooked);

	return 0;
}

static struct sti_struct * __init
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 = kmalloc(sizeof(*sti), GFP_KERNEL);
	if (!sti) {
	    printk(KERN_ERR "Not enough memory !\n");
	    return NULL;
	}
		    
	memset(sti, 0, sizeof(*sti));
	sti->lock = SPIN_LOCK_UNLOCKED;

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 = __raw_readl(address);

	/* check for a PCI ROM structure */
	if ((le32_to_cpu(sig)==0xaa55)) {
		unsigned int i, rm_offset;
		u32 *rm;
		i = __raw_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 = __raw_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++ = __raw_readl(address+rm_offset+0x00);
			*rm++ = __raw_readl(address+rm_offset+0x04);
			*rm++ = __raw_readl(address+rm_offset+0x08);
			*rm++ = __raw_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(__raw_readl(address+8));
		DPRINTK(("sig %04x, PCI STI ROM at %08lx\n", sig, address));
		goto test_rom;
	}
	
	ok = 0;
	
	if ((sig & 0xff) == 0x01) {
		printk(KERN_INFO "STI byte mode ROM at %08lx, hpa at %08lx\n",
		       address, hpa);
		ok = sti_read_rom(0, sti, address);
	}

	if ((sig & 0xffff) == 0x0303) {
		printk(KERN_INFO "STI 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);
	
	printk(KERN_INFO "STI device: %s\n", sti->outptr.dev_name );

	sti_roms[num_sti_roms] = sti;
	num_sti_roms++;
	
	return sti;

out_err:
	kfree(sti);
	return NULL;
}

static void __init 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)
{
	unsigned long rom = 0;
	char pa_path[21];
	struct sti_struct *sti = NULL;
	
	if(dev->num_addrs) {
		rom = dev->addr[0];
	}
	if (!rom) {
		rom = dev->hpa;
		DPRINTK((KERN_DEBUG "Trying STI ROM at %08lx, hpa at %08lx\n", rom, dev->hpa));
		sti = sti_try_rom_generic(rom, dev->hpa, NULL);
		rom = PAGE0->proc_sti;
	}
	if (!sti) {
		DPRINTK((KERN_DEBUG "Trying STI ROM at %08lx, hpa at %08lx\n", rom, dev->hpa));
		sti = sti_try_rom_generic(rom, dev->hpa, NULL);
	}
	if (!sti)
		return 1;
	
	print_pa_hwpath(dev, pa_path);
	sticore_check_for_default_sti (sti, pa_path);
	return 0;
}


static int __devinit 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;
	struct sti_struct *sti;
	
	pci_enable_device(pd);

	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",
			pd->name);
		return -ENODEV;
	}
#endif /* CONFIG_PCI */

	return 0;
}


static void __devexit sticore_pci_remove(struct pci_dev *pd)
{
	BUG();
}


#define PCI_DEVICE_ID_VISUALIZE_EG	0x1005
#define PCI_DEVICE_ID_VISUALIZE_FX	0x1008
#define PCI_DEVICE_ID_VISUALIZE_FX_NEW	0x108b

static struct pci_device_id sti_pci_tbl[] __devinitdata = {
	{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_VISUALIZE_EG, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_VISUALIZE_FX, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ PCI_VENDOR_ID_HP, PCI_DEVICE_ID_VISUALIZE_FX_NEW, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ 0, } /* terminate list */
};
MODULE_DEVICE_TABLE(pci, sti_pci_tbl);

static struct pci_driver pci_sti_driver = {
	name:		"sti (pci)",
	id_table:	sti_pci_tbl,
	probe:		sticore_pci_init,
	remove:		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, }
};

struct parisc_driver pa_sti_driver = {
	name:		"sti (native)",
	id_table:	sti_pa_tbl,
	probe:		sticore_pa_init,
};

struct sti_struct * __init sti_init_roms(void)
{
	static int initialized;

	if (initialized)
		goto out;

	printk(KERN_INFO "STI GSC/PCI graphics driver version %s\n",
			STI_DRIVERVERSION);

	/* Register drivers for native & PCI cards */
	register_parisc_driver(&pa_sti_driver);
	pci_module_init (&pci_sti_driver);

	/* if we didn't find the given default sti, take the first one */
	if (!default_sti)
		default_sti = sti_roms[0];

out:
	/* return default STI if available */
	if (num_sti_roms && default_sti && default_sti->init_graph) {
		initialized = 1;
		return default_sti;
	}
	return NULL;
}

/*
 * index = 0 gives default sti
 * index > 0 gives other stis in detection order
 */
struct sti_struct * __init sti_get_rom(int index)
{
	int i;
	
	if (index == 0)
		return default_sti;

	i = -1;
	while (index > 0) {
		i++;
		if (i > num_sti_roms)
			return NULL;
		if (sti_roms[i] == default_sti)
			continue;
		index--;
	}
	return sti_roms[i];
}