139 #define nand_select()	this->hwcontrol(NAND_CTL_SETNCE);
141 #define nand_deselect() this->hwcontrol(NAND_CTL_CLRNCE);
173 static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, int col, 
180 	register struct nand_chip *this = mtd->priv;  in nand_command()  local
181 	register unsigned long NAND_IO_ADDR = this->IO_ADDR_W;  in nand_command()
184 	this->hwcontrol (NAND_CTL_SETCLE);  in nand_command()
212 	this->hwcontrol (NAND_CTL_CLRCLE);  in nand_command()
215 		this->hwcontrol (NAND_CTL_SETALE);  in nand_command()
228 		this->hwcontrol (NAND_CTL_CLRALE);  in nand_command()
245 		if (this->dev_ready)	  in nand_command()
247 		this->hwcontrol (NAND_CTL_SETCLE);  in nand_command()
249 		this->hwcontrol (NAND_CTL_CLRCLE);  in nand_command()
250 		while ( !(readb (this->IO_ADDR_R) & 0x40));  in nand_command()
259 		if (!this->dev_ready) {  in nand_command()
260 			udelay (this->chip_delay);  in nand_command()
266 	while (!this->dev_ready());  in nand_command()
272 static inline void nand_get_chip (struct nand_chip *this, struct mtd_info *mtd, int new_state, int …  in nand_get_chip()  argument
283 	spin_lock_bh (&this->chip_lock);  in nand_get_chip()
285 	if (this->state == FL_READY) {  in nand_get_chip()
286 		this->state = new_state;  in nand_get_chip()
288 			spin_unlock_bh (&this->chip_lock);  in nand_get_chip()
292 	if (this->state == FL_ERASING) {  in nand_get_chip()
294 			this->state = new_state;  in nand_get_chip()
295 			spin_unlock_bh (&this->chip_lock);  in nand_get_chip()
297 			this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);  in nand_get_chip()
303 	add_wait_queue (&this->wq, &wait);  in nand_get_chip()
304 	spin_unlock_bh (&this->chip_lock);  in nand_get_chip()
306 	remove_wait_queue (&this->wq, &wait);  in nand_get_chip()
316 static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)  in nand_wait()  argument
327 	spin_lock_bh (&this->chip_lock);  in nand_wait()
328 	this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);  in nand_wait()
332 		if (this->state != state) {  in nand_wait()
333 			spin_unlock_bh (&this->chip_lock);  in nand_wait()
336 		if (this->dev_ready) {  in nand_wait()
337 			if (this->dev_ready ())  in nand_wait()
340 		if (readb (this->IO_ADDR_R) & 0x40)  in nand_wait()
343 		spin_unlock_bh (&this->chip_lock);  in nand_wait()
345 		spin_lock_bh (&this->chip_lock);  in nand_wait()
347 	status = (int) readb (this->IO_ADDR_R);  in nand_wait()
348 	spin_unlock_bh (&this->chip_lock);  in nand_wait()
356 static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this,  in nand_write_page()  argument
361 	int	eccmode = oobsel ? this->eccmode : NAND_ECC_NONE;  in nand_write_page()
366 		oob_data = &this->data_buf[mtd->oobblock];  in nand_write_page()
376 			this->cmdfunc (mtd, NAND_CMD_READ0, 0, page);  in nand_write_page()
378 				this->data_poi[i] = readb (this->IO_ADDR_R);  in nand_write_page()
380 		if ((col < this->eccsize) && (last >= this->eccsize)) {  in nand_write_page()
381 			this->calculate_ecc (&this->data_poi[0], &(ecc_code[0]));  in nand_write_page()
387 			this->calculate_ecc (&this->data_poi[256], &(ecc_code[3]));  in nand_write_page()
399 		this->data_poi[i] = 0xff;  in nand_write_page()
403 		this->data_poi[i] = 0xff;  in nand_write_page()
406 	this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page);  in nand_write_page()
409 	switch (this->eccmode) {  in nand_write_page()
414 			writeb ( this->data_poi[i] , this->IO_ADDR_W);  in nand_write_page()
419 		this->enable_hwecc (NAND_ECC_WRITE);	/* enable hardware ecc logic for write */  in nand_write_page()
421 			writeb ( this->data_poi[i] , this->IO_ADDR_W);  in nand_write_page()
423 		this->calculate_ecc (NULL, &(ecc_code[0]));  in nand_write_page()
428 			this->enable_hwecc (NAND_ECC_WRITE);	/* enable hardware ecc logic for write*/  in nand_write_page()
430 				writeb ( this->data_poi[i] , this->IO_ADDR_W);  in nand_write_page()
431 			this->calculate_ecc (NULL, &(ecc_code[3]));  in nand_write_page()
439 		this->enable_hwecc (NAND_ECC_WRITE);	/* enable hardware ecc logic */  in nand_write_page()
441 			writeb ( this->data_poi[i] , this->IO_ADDR_W);  in nand_write_page()
442 		this->calculate_ecc (NULL, &(ecc_code[0]));  in nand_write_page()
449 		this->enable_hwecc (NAND_ECC_WRITE);	/* enable hardware ecc logic */  in nand_write_page()
451 			writeb ( this->data_poi[i] , this->IO_ADDR_W);  in nand_write_page()
452 		this->calculate_ecc (NULL, &(ecc_code[0]));  in nand_write_page()
458 		printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);  in nand_write_page()
464 		writeb ( oob_data[i] , this->IO_ADDR_W);  in nand_write_page()
467 	this->cmdfunc (mtd, NAND_CMD_PAGEPROG, -1, -1);  in nand_write_page()
470 	status = this->waitfunc (mtd, this, FL_WRITING);  in nand_write_page()
493 	this->cmdfunc (mtd, NAND_CMD_READ0, col, page);  in nand_write_page()
496 		if (this->data_poi[i] != readb (this->IO_ADDR_R)) {  in nand_write_page()
505 			if (oob_data[i] != readb (this->IO_ADDR_R)) {  in nand_write_page()
514 			switch (this->eccmode) {  in nand_write_page()
522 				oob_data[i] = readb (this->IO_ADDR_R);  in nand_write_page()
556 	struct nand_chip *this = mtd->priv;  in nand_read_ecc()  local
560 	int	eccmode = oobsel ? this->eccmode : NAND_ECC_NONE;  in nand_read_ecc()
574 	nand_get_chip (this, mtd ,FL_READING, &erase_state);  in nand_read_ecc()
580 	page = from >> this->page_shift;  in nand_read_ecc()
589 	this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page);  in nand_read_ecc()
596 			if (!this->dev_ready)   in nand_read_ecc()
597 				udelay (this->chip_delay);  in nand_read_ecc()
599 				while (!this->dev_ready());	  in nand_read_ecc()
609 			data_poi = this->data_buf;  in nand_read_ecc()
613 			oob_data = &this->data_buf[end];  in nand_read_ecc()
621 				data_poi[j++] = readb (this->IO_ADDR_R);  in nand_read_ecc()
626 				data_poi[j++] = readb (this->IO_ADDR_R);  in nand_read_ecc()
627 			this->calculate_ecc (&data_poi[0], &ecc_calc[0]);  in nand_read_ecc()
629 				this->calculate_ecc (&data_poi[256], &ecc_calc[3]);  in nand_read_ecc()
633 			this->enable_hwecc (NAND_ECC_READ);	  in nand_read_ecc()
635 				data_poi[j++] = readb (this->IO_ADDR_R);  in nand_read_ecc()
636 			this->calculate_ecc (&data_poi[0], &ecc_calc[0]);	/* read from hardware */  in nand_read_ecc()
639 				this->enable_hwecc (NAND_ECC_READ);	  in nand_read_ecc()
641 					data_poi[j++] = readb (this->IO_ADDR_R);  in nand_read_ecc()
642 				this->calculate_ecc (&data_poi[256], &ecc_calc[3]); /* read from hardware */  in nand_read_ecc()
648 			this->enable_hwecc (NAND_ECC_READ);	  in nand_read_ecc()
650 				data_poi[j++] = readb (this->IO_ADDR_R);  in nand_read_ecc()
651 			this->calculate_ecc (&data_poi[0], &ecc_calc[0]);	/* read from hardware */  in nand_read_ecc()
655 			printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);  in nand_read_ecc()
661 			oob_data[oob + j] = readb (this->IO_ADDR_R);  in nand_read_ecc()
672 		ecc_status = this->correct_data (&data_poi[0], &ecc_code[0], &ecc_calc[0]);  in nand_read_ecc()
685 			ecc_status = this->correct_data (&data_poi[256], &ecc_code[3], &ecc_calc[3]);  in nand_read_ecc()
711 	spin_lock_bh (&this->chip_lock);  in nand_read_ecc()
712 	this->state = FL_READY;  in nand_read_ecc()
713 	wake_up (&this->wq);  in nand_read_ecc()
714 	spin_unlock_bh (&this->chip_lock);  in nand_read_ecc()
732 	struct nand_chip *this = mtd->priv;  in nand_read_oob()  local
737 	page = ((int) from) >> this->page_shift;  in nand_read_oob()
753 	nand_get_chip (this, mtd , FL_READING, &erase_state);  in nand_read_oob()
759 	this->cmdfunc (mtd, NAND_CMD_READOOB, col, page);  in nand_read_oob()
765 		buf[i] = readb (this->IO_ADDR_R);  in nand_read_oob()
767 			udelay (this->chip_delay);  in nand_read_oob()
773 	spin_lock_bh (&this->chip_lock);  in nand_read_oob()
774 	this->state = FL_READY;  in nand_read_oob()
775 	wake_up (&this->wq);  in nand_read_oob()
776 	spin_unlock_bh (&this->chip_lock);  in nand_read_oob()
797 	struct nand_chip *this = mtd->priv;  in nand_write_ecc()  local
808 	page = ((int) to) >> this->page_shift;  in nand_write_ecc()
814 	nand_get_chip (this, mtd, FL_WRITING, NULL);  in nand_write_ecc()
820 	this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);  in nand_write_ecc()
821 	if (!(readb (this->IO_ADDR_R) & 0x80)) {  in nand_write_ecc()
834 			this->data_poi = (u_char*) &buf[written];  in nand_write_ecc()
839 				this->data_buf[i] = buf[written + i];  in nand_write_ecc()
842 			this->data_poi = this->data_buf;		  in nand_write_ecc()
846 			ret = nand_write_page (mtd, this, page, col, cnt ,&eccbuf[oob], oobsel);  in nand_write_ecc()
849 			ret = nand_write_page (mtd, this, page, col, cnt, NULL, oobsel);	  in nand_write_ecc()
867 	spin_lock_bh (&this->chip_lock);  in nand_write_ecc()
868 	this->state = FL_READY;  in nand_write_ecc()
869 	wake_up (&this->wq);  in nand_write_ecc()
870 	spin_unlock_bh (&this->chip_lock);  in nand_write_ecc()
882 	struct nand_chip *this = mtd->priv;  in nand_write_oob()  local
887 	page = ((int) to) >> this->page_shift;  in nand_write_oob()
902 	nand_get_chip (this, mtd, FL_WRITING, NULL);  in nand_write_oob()
908 	this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);  in nand_write_oob()
909 	if (!(readb (this->IO_ADDR_R) & 0x80)) {  in nand_write_oob()
916 	this->cmdfunc (mtd, NAND_CMD_SEQIN, mtd->oobblock, page);  in nand_write_oob()
919 		writeb (0xff, this->IO_ADDR_W);  in nand_write_oob()
922 		writeb (buf[i], this->IO_ADDR_W);	  in nand_write_oob()
925 		writeb (0xff, this->IO_ADDR_W);  in nand_write_oob()
928 	this->cmdfunc (mtd, NAND_CMD_PAGEPROG, -1, -1);  in nand_write_oob()
930 	status = this->waitfunc (mtd, this, FL_WRITING);  in nand_write_oob()
943 	this->cmdfunc (mtd, NAND_CMD_READOOB, column, page);  in nand_write_oob()
947 		if (buf[i] != readb (this->IO_ADDR_R)) {  in nand_write_oob()
960 	spin_lock_bh (&this->chip_lock);  in nand_write_oob()
961 	this->state = FL_READY;  in nand_write_oob()
962 	wake_up (&this->wq);  in nand_write_oob()
963 	spin_unlock_bh (&this->chip_lock);  in nand_write_oob()
982 	struct nand_chip *this = mtd->priv;  in nand_writev_ecc()  local
999 	page = ((int) to) >> this->page_shift;  in nand_writev_ecc()
1005 	nand_get_chip (this, mtd, FL_WRITING, NULL);  in nand_writev_ecc()
1011 	this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);  in nand_writev_ecc()
1012 	if (!(readb (this->IO_ADDR_R) & 0x80)) {  in nand_writev_ecc()
1031 			this->data_poi = (u_char *) vecs->iov_base;  in nand_writev_ecc()
1032 			this->data_poi += len;  in nand_writev_ecc()
1047 					this->data_buf[cnt++] = ((u_char *) vecs->iov_base)[len++];  in nand_writev_ecc()
1056 			this->data_poi = this->data_buf;	  in nand_writev_ecc()
1060 		ret = nand_write_page (mtd, this, page, col, cnt, NULL, oobsel);  in nand_writev_ecc()
1079 	spin_lock_bh (&this->chip_lock);  in nand_writev_ecc()
1080 	this->state = FL_READY;  in nand_writev_ecc()
1081 	wake_up (&this->wq);  in nand_writev_ecc()
1082 	spin_unlock_bh (&this->chip_lock);  in nand_writev_ecc()
1094 	struct nand_chip *this = mtd->priv;  in nand_erase()  local
1119 	nand_get_chip (this, mtd, FL_ERASING, NULL);  in nand_erase()
1122 	page = (int) (instr->addr >> this->page_shift);  in nand_erase()
1131 	this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);  in nand_erase()
1132 	if (!(readb (this->IO_ADDR_R) & 0x80)) {  in nand_erase()
1145 		this->cmdfunc (mtd, NAND_CMD_READOOB, NAND_BADBLOCK_POS, page);  in nand_erase()
1146 		if (readb (this->IO_ADDR_R) != 0xff) {  in nand_erase()
1153 		this->cmdfunc (mtd, NAND_CMD_ERASE1, -1, page);  in nand_erase()
1154 		this->cmdfunc (mtd, NAND_CMD_ERASE2, -1, -1);  in nand_erase()
1156 		spin_unlock_bh (&this->chip_lock);  in nand_erase()
1157 		status = this->waitfunc (mtd, this, FL_ERASING);  in nand_erase()
1160 		spin_lock_bh (&this->chip_lock);  in nand_erase()
1169 		if (this->state == FL_ERASING) {  in nand_erase()
1175 		spin_unlock_bh (&this->chip_lock);  in nand_erase()
1177 		spin_lock_bh (&this->chip_lock);  in nand_erase()
1179 		if (this->state == FL_ERASING || this->state == FL_READY) {  in nand_erase()
1181 			this->state = FL_ERASING;  in nand_erase()
1186 			add_wait_queue (&this->wq, &wait);  in nand_erase()
1187 			spin_unlock_bh (&this->chip_lock);  in nand_erase()
1189 			remove_wait_queue (&this->wq, &wait);  in nand_erase()
1198 	spin_unlock_bh (&this->chip_lock);  in nand_erase()
1206 	spin_lock_bh (&this->chip_lock);  in nand_erase()
1207 	this->state = FL_READY;  in nand_erase()
1208 	spin_unlock_bh (&this->chip_lock);  in nand_erase()
1219 	struct nand_chip *this = mtd->priv;  in nand_sync()  local
1226 	spin_lock_bh (&this->chip_lock);  in nand_sync()
1229 	switch (this->state) {  in nand_sync()
1232 		this->state = FL_SYNCING;  in nand_sync()
1233 		spin_unlock_bh (&this->chip_lock);  in nand_sync()
1238 		add_wait_queue (&this->wq, &wait);  in nand_sync()
1239 		spin_unlock_bh (&this->chip_lock);  in nand_sync()
1242 		remove_wait_queue (&this->wq, &wait);  in nand_sync()
1247 	spin_lock_bh (&this->chip_lock);  in nand_sync()
1250 	if (this->state == FL_SYNCING) {  in nand_sync()
1251 		this->state = FL_READY;  in nand_sync()
1252 		wake_up (&this->wq);  in nand_sync()
1256 	spin_unlock_bh (&this->chip_lock);  in nand_sync()
1265 	struct nand_chip *this = mtd->priv;  in nand_scan()  local
1268 	if (!this->chip_delay)  in nand_scan()
1269 		this->chip_delay = 20;  in nand_scan()
1272 	if (this->cmdfunc == NULL)  in nand_scan()
1273 		this->cmdfunc = nand_command;  in nand_scan()
1276 	if (this->waitfunc == NULL)  in nand_scan()
1277 		this->waitfunc = nand_wait;  in nand_scan()
1283 	this->cmdfunc (mtd, NAND_CMD_READID, 0x00, -1);  in nand_scan()
1286 	nand_maf_id = readb (this->IO_ADDR_R);  in nand_scan()
1287 	nand_dev_id = readb (this->IO_ADDR_R);  in nand_scan()
1299 				this->page_shift = 8;  in nand_scan()
1303 				this->page_shift = 9;  in nand_scan()
1322 	this->eccsize = 256;	/* set default eccsize */	  in nand_scan()
1324 	switch (this->eccmode) {  in nand_scan()
1329 			this->eccmode = NAND_ECC_SOFT;  in nand_scan()
1330 			this->calculate_ecc = nand_calculate_ecc;  in nand_scan()
1331 			this->correct_data = nand_correct_data;  in nand_scan()
1334 			this->eccsize = 512; /* set eccsize to 512 and fall through for function check */  in nand_scan()
1337 		if (this->calculate_ecc && this->correct_data && this->enable_hwecc)  in nand_scan()
1343 		this->eccmode = NAND_ECC_NONE;  in nand_scan()
1347 		this->calculate_ecc = nand_calculate_ecc;  in nand_scan()
1348 		this->correct_data = nand_correct_data;  in nand_scan()
1352 		printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);  in nand_scan()
1357 	this->state = FL_READY;  in nand_scan()
1358 	init_waitqueue_head (&this->wq);  in nand_scan()
1359 	spin_lock_init (&this->chip_lock);  in nand_scan()