1 // SPDX-License-Identifier: GPL-2.0-or-later
5 *  A rewrite of the pcmcia-cs add-on driver for newer (circa 1997)
8 *  The pcmcia-cs add-on version of this driver is not supported
36 *  data in PIO mode.  Note this can be changed via "sysfs".
72 #define SYNC_MODE 0 		/* Synchronous transfer mode */
85 #define TC_LSB		0x00		/* transfer counter lsb */
86 #define TC_MSB		0x01		/* transfer counter msb */
94 #define SYNCPRD		0x06		/* synchronous transfer period */
103 #define TC_HIGH		0x0E		/* transfer counter high */
110 #define PIO_FIFO	0x04		/* PIO FIFO registers (r/w) */
114 #define PIO_STATUS	0x08		/* PIO status (r/w) */
117 #define PIO_FLAG	0x0B		/* PIO flag interrupt enable (r/w) */
188 *  Repository for per-instance host data.
227 	outb(0x05, io_port + SYNCPRD);	/* Synchronous transfer period */  in chip_init()
284 				reqlen -= len & 0xfc;   in SYM53C500_pio_read()
286 				while (len--) {  in SYM53C500_pio_read()
288 					reqlen--;  in SYM53C500_pio_read()
335 				reqlen -= len & 0xfc;  in SYM53C500_pio_write()
337 				while (len--) {  in SYM53C500_pio_write()
339 					reqlen--;  in SYM53C500_pio_write()
356 	int port_base = dev->io_port;  in SYM53C500_intr()
358 	    (struct sym53c500_data *)dev->hostdata;  in SYM53C500_intr()
359 	struct scsi_cmnd *curSC = data->current_SC;  in SYM53C500_intr()
361 	int fast_pio = data->fast_pio;  in SYM53C500_intr()
363 	spin_lock_irqsave(dev->host_lock, flags);  in SYM53C500_intr()
378 	printk(", pio=%02x\n", pio_status);  in SYM53C500_intr()
383 		curSC->result = DID_RESET << 16;  in SYM53C500_intr()
388 		printk("SYM53C500: Warning: PIO error!\n");  in SYM53C500_intr()
389 		curSC->result = DID_ERROR << 16;  in SYM53C500_intr()
395 		curSC->result = DID_PARITY << 16;  in SYM53C500_intr()
401 		curSC->result = DID_ERROR << 16;  in SYM53C500_intr()
407 		if (scp->phase != message_in) {	/* Unexpected disconnect */  in SYM53C500_intr()
408 			curSC->result = DID_NO_CONNECT << 16;  in SYM53C500_intr()
410 			curSC->result = (scp->status & 0xff) |  in SYM53C500_intr()
411 				((scp->message & 0xff) << 8) | (DID_OK << 16);  in SYM53C500_intr()
417 	case 0x00:			/* DATA-OUT */  in SYM53C500_intr()
418 		if (int_reg & 0x10) {	/* Target requesting info transfer */  in SYM53C500_intr()
422 			scp->phase = data_out;  in SYM53C500_intr()
423 			VDEB(printk("SYM53C500: Data-Out phase\n"));  in SYM53C500_intr()
425 			LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC));	/* Max transfer size */  in SYM53C500_intr()
430 				    sg_virt(sg), sg->length);  in SYM53C500_intr()
436 	case 0x01:		/* DATA-IN */  in SYM53C500_intr()
437 		if (int_reg & 0x10) {	/* Target requesting info transfer */  in SYM53C500_intr()
441 			scp->phase = data_in;  in SYM53C500_intr()
442 			VDEB(printk("SYM53C500: Data-In phase\n"));  in SYM53C500_intr()
444 			LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC));	/* Max transfer size */  in SYM53C500_intr()
449 					sg_virt(sg), sg->length);  in SYM53C500_intr()
456 		scp->phase = command_ph;  in SYM53C500_intr()
461 		scp->phase = status_ph;  in SYM53C500_intr()
472 	case 0x06:		/* MESSAGE-OUT */  in SYM53C500_intr()
473 		DEB(printk("SYM53C500: Message-Out phase\n"));  in SYM53C500_intr()
474 		scp->phase = message_out;  in SYM53C500_intr()
479 	case 0x07:		/* MESSAGE-IN */  in SYM53C500_intr()
480 		VDEB(printk("SYM53C500: Message-In phase\n"));  in SYM53C500_intr()
481 		scp->phase = message_in;  in SYM53C500_intr()
483 		scp->status = inb(port_base + SCSI_FIFO);  in SYM53C500_intr()
484 		scp->message = inb(port_base + SCSI_FIFO);  in SYM53C500_intr()
487 		DEB(printk("Status = %02x  Message = %02x\n", scp->status, scp->message));  in SYM53C500_intr()
489 		if (scp->message == SAVE_POINTERS || scp->message == DISCONNECT) {  in SYM53C500_intr()
497 	spin_unlock_irqrestore(dev->host_lock, flags);  in SYM53C500_intr()
501 	scp->phase = idle;  in SYM53C500_intr()
509 	struct scsi_info_t *info = link->priv;  in SYM53C500_release()
510 	struct Scsi_Host *shost = info->host;  in SYM53C500_release()
512 	dev_dbg(&link->dev, "SYM53C500_release\n");  in SYM53C500_release()
523 	if (shost->irq)  in SYM53C500_release()
524 		free_irq(shost->irq, shost);  in SYM53C500_release()
525 	if (shost->io_port && shost->n_io_port)  in SYM53C500_release()
526 		release_region(shost->io_port, shost->n_io_port);  in SYM53C500_release()
538 	    (struct sym53c500_data *)SChost->hostdata;  in SYM53C500_info()
542 	    "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.",   in SYM53C500_info()
543 	    SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow");  in SYM53C500_info()
551 	int port_base = SCpnt->device->host->io_port;  in SYM53C500_queue_lck()
553 	    (struct sym53c500_data *)SCpnt->device->host->hostdata;  in SYM53C500_queue_lck()
558 	    SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,   in SYM53C500_queue_lck()
559 		   (u8)SCpnt->device->lun,  scsi_bufflen(SCpnt)));  in SYM53C500_queue_lck()
561 	VDEB(for (i = 0; i < SCpnt->cmd_len; i++)  in SYM53C500_queue_lck()
562 	    printk("cmd[%d]=%02x  ", i, SCpnt->cmnd[i]));  in SYM53C500_queue_lck()
565 	data->current_SC = SCpnt;  in SYM53C500_queue_lck()
566 	scp->phase = command_ph;  in SYM53C500_queue_lck()
567 	scp->status = 0;  in SYM53C500_queue_lck()
568 	scp->message = 0;  in SYM53C500_queue_lck()
575 	for (i = 0; i < SCpnt->cmd_len; i++) {  in SYM53C500_queue_lck()
576 		outb(SCpnt->cmnd[i], port_base + SCSI_FIFO);  in SYM53C500_queue_lck()
588 	int port_base = SCpnt->device->host->io_port;  in DEF_SCSI_QCMD()
591 	spin_lock_irq(SCpnt->device->host->host_lock);  in DEF_SCSI_QCMD()
593 	spin_unlock_irq(SCpnt->device->host->host_lock);  in DEF_SCSI_QCMD()
625 	    (struct sym53c500_data *)SHp->hostdata;  in SYM53C500_show_pio()
627 	return snprintf(buf, 4, "%d\n", data->fast_pio);  in SYM53C500_show_pio()
634 	int pio;  in SYM53C500_store_pio()  local
637 	    (struct sym53c500_data *)SHp->hostdata;  in SYM53C500_store_pio()
639 	pio = simple_strtoul(buf, NULL, 0);  in SYM53C500_store_pio()
640 	if (pio == 0 || pio == 1) {  in SYM53C500_store_pio()
641 		data->fast_pio = pio;  in SYM53C500_store_pio()
645 		return -EINVAL;  in SYM53C500_store_pio()
688 	p_dev->io_lines = 10;  in SYM53C500_config_check()
689 	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;  in SYM53C500_config_check()
690 	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;  in SYM53C500_config_check()
692 	if (p_dev->resource[0]->start == 0)  in SYM53C500_config_check()
693 		return -ENODEV;  in SYM53C500_config_check()
701 	struct scsi_info_t *info = link->priv;  in SYM53C500_config()
708 	dev_dbg(&link->dev, "SYM53C500_config\n");  in SYM53C500_config()
710 	info->manf_id = link->manf_id;  in SYM53C500_config()
716 	if (!link->irq)  in SYM53C500_config()
726 	*  section dealing with manufacturer IDs can be scrapped.	--rct  in SYM53C500_config()
728 	if ((info->manf_id == MANFID_MACNICA) ||  in SYM53C500_config()
729 	    (info->manf_id == MANFID_PIONEER) ||  in SYM53C500_config()
730 	    (info->manf_id == 0x0098)) {  in SYM53C500_config()
732 		outb(0xb4, link->resource[0]->start + 0xd);  in SYM53C500_config()
733 		outb(0x24, link->resource[0]->start + 0x9);  in SYM53C500_config()
734 		outb(0x04, link->resource[0]->start + 0xd);  in SYM53C500_config()
738 	*  irq_level == 0 implies tpnt->can_queue == 0, which  in SYM53C500_config()
747 	port_base = link->resource[0]->start;  in SYM53C500_config()
748 	irq_level = link->irq;  in SYM53C500_config()
761 	data = (struct sym53c500_data *)host->hostdata;  in SYM53C500_config()
777 	host->unique_id = port_base;  in SYM53C500_config()
778 	host->irq = irq_level;  in SYM53C500_config()
779 	host->io_port = port_base;  in SYM53C500_config()
780 	host->n_io_port = 0x10;  in SYM53C500_config()
781 	host->dma_channel = -1;  in SYM53C500_config()
787 	data->fast_pio = USE_FAST_PIO;  in SYM53C500_config()
789 	info->host = host;  in SYM53C500_config()
805 	return -ENODEV;  in SYM53C500_config()
809 	return -ENODEV;  in SYM53C500_config()
814 	struct scsi_info_t *info = link->priv;  in sym53c500_resume()
817 	if ((info->manf_id == MANFID_MACNICA) ||  in sym53c500_resume()
818 	    (info->manf_id == MANFID_PIONEER) ||  in sym53c500_resume()
819 	    (info->manf_id == 0x0098)) {  in sym53c500_resume()
820 		outb(0x80, link->resource[0]->start + 0xd);  in sym53c500_resume()
821 		outb(0x24, link->resource[0]->start + 0x9);  in sym53c500_resume()
822 		outb(0x04, link->resource[0]->start + 0xd);  in sym53c500_resume()
828 	SYM53C500_int_host_reset(link->resource[0]->start);  in sym53c500_resume()
836 	dev_dbg(&link->dev, "SYM53C500_detach\n");  in SYM53C500_detach()
840 	kfree(link->priv);  in SYM53C500_detach()
841 	link->priv = NULL;  in SYM53C500_detach()
849 	dev_dbg(&link->dev, "SYM53C500_attach()\n");  in SYM53C500_probe()
854 		return -ENOMEM;  in SYM53C500_probe()
855 	info->p_dev = link;  in SYM53C500_probe()
856 	link->priv = info;  in SYM53C500_probe()
857 	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;  in SYM53C500_probe()