1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * eisa_enumerator.c - provide support for EISA adapters in PA-RISC machines
36  * little-endian on the big-endian PAROSC */
54 static void print_eisa_id(char *s, u_int32_t id)  in print_eisa_id()  argument
60 	rev = id & 0xff;  in print_eisa_id()
61 	id >>= 8;  in print_eisa_id()
62 	device = id & 0xff;  in print_eisa_id()
63 	id >>= 8;  in print_eisa_id()
65 	vendor[2] = '@' + (id & 0x1f);  in print_eisa_id()
66 	id >>= 5;	  in print_eisa_id()
67 	vendor[1] = '@' + (id & 0x1f);  in print_eisa_id()
68 	id >>= 5;	  in print_eisa_id()
69 	vendor[0] = '@' + (id & 0x1f);  in print_eisa_id()
70 	id >>= 5;	  in print_eisa_id()
92 			res->name = name;  in configure_memory()
93 			res->start = mem_parent->start + get_24(buf+len+2);  in configure_memory()
94 			res->end = res->start + get_16(buf+len+5)*1024;  in configure_memory()
95 			res->flags = IORESOURCE_MEM;  in configure_memory()
168 		     char *board)  in configure_port()  argument
182 			res->name = board;  in configure_port()
183 			res->start = get_16(buf+len+1);  in configure_port()
184 			res->end = get_16(buf+len+1)+(c&HPEE_PORT_SIZE_MASK)+1;  in configure_port()
185 			res->flags = IORESOURCE_IO;  in configure_port()
206  * I assume that there are and- and or- masks
303 	/* the init field seems to be a two-byte field  in configure_function()
304 	 * which is non-zero if there are an other function following  in configure_function()
326 	char *board;  in parse_slot_config()  local
329 	if (NULL == (board = kmalloc(8, GFP_KERNEL))) {  in parse_slot_config()
330 		return -1;  in parse_slot_config()
332 	print_eisa_id(board, es->eisa_slot_id);  in parse_slot_config()
334 	       slot, board, es->flags&HPEE_FLAG_BOARD_IS_ISA ? "ISA" : "EISA");  in parse_slot_config()
336 	maxlen = es->config_data_length < HPEE_MAX_LENGTH ?  in parse_slot_config()
337 			 es->config_data_length : HPEE_MAX_LENGTH;  in parse_slot_config()
338 	while ((pos < maxlen) && (num_func <= es->num_functions)) {  in parse_slot_config()
355 			printk("function %d have free-form configuration, skipping ",  in parse_slot_config()
375 			pos += configure_memory(buf+pos, mem_parent, board);  in parse_slot_config()
388 			pos += configure_port(buf+pos, io_parent, board);  in parse_slot_config()
398 			       num_func, pos-p0, function_len);  in parse_slot_config()
399 			res=-1;  in parse_slot_config()
406 		kfree(board);  in parse_slot_config()
409 	if (pos != es->config_data_length) {  in parse_slot_config()
411 			pos, es->config_data_length);  in parse_slot_config()
412 		res=-1;  in parse_slot_config()
415 	if (num_func != es->num_functions) {  in parse_slot_config()
417 			num_func, es->num_functions);  in parse_slot_config()
418 		res=-2;  in parse_slot_config()
427 	unsigned int id;  in init_slot()  local
431 	if (!(es->slot_info&HPEE_SLOT_INFO_NO_READID)) {  in init_slot()
432 		/* try to read the id of the board in the slot */  in init_slot()
433 		id = le32_to_cpu(inl(SLOT2PORT(slot)+EPI));  in init_slot()
435 		if (0xffffffff == id) {  in init_slot()
437 			if (es->eisa_slot_id == 0xffffffff)  in init_slot()
438 				return -1;  in init_slot()
440 			/* this board is not here or it does not   in init_slot()
443 			printk(KERN_ERR "EISA slot %d a configured board was not detected (",   in init_slot()
446 			print_eisa_id(id_string, es->eisa_slot_id);  in init_slot()
449 			return -1;	  in init_slot()
452 		if (es->eisa_slot_id != id) {  in init_slot()
453 			print_eisa_id(id_string, id);  in init_slot()
454 			printk(KERN_ERR "EISA slot %d id mismatch: got %s",  in init_slot()
457 			print_eisa_id(id_string, es->eisa_slot_id);  in init_slot()
460 			return -1;	  in init_slot()
465 	/* now: we need to enable the board if   in init_slot()
470 	if (es->slot_features & HPEE_SLOT_FEATURES_ENABLE) {  in init_slot()
471 		/* enable board */  in init_slot()
494 	for (i=0;i<eh->num_slots;i++) {  in eisa_enumerator()
500 		if (-1==init_slot(i+1, es)) {  in eisa_enumerator()
504 		if (es->config_data_offset < HPEE_MAX_LENGTH) {  in eisa_enumerator()
505 			if (parse_slot_config(i+1, &eeprom_buf[es->config_data_offset],  in eisa_enumerator()
507 				return -1;  in eisa_enumerator()
510 			printk (KERN_WARNING "EISA EEPROM offset 0x%x out of range\n",es->config_data_offset);  in eisa_enumerator()
511 			return -1;  in eisa_enumerator()
514 	return eh->num_slots;  in eisa_enumerator()