1 // SPDX-License-Identifier: GPL-2.0-only
19 #include <linux/module.h>
38 #define NCR5380_read(reg)           in_8(hostdata->io + ((reg) << 4))
39 #define NCR5380_write(reg, value)   out_8(hostdata->io + ((reg) << 4), value)
54 static int setup_can_queue = -1;
56 static int setup_cmd_per_lun = -1;
58 static int setup_sg_tablesize = -1;
62 static int setup_hostid = -1;
64 static int setup_toshiba_delay = -1;
67 #ifndef MODULE
95 #endif /* !MODULE */
109  * offending instruction. Post-increment addressing can't be used.
233 		return start - addr; /* Negated to indicate uncertain length */  in mac_pdma_recv()
237 	return addr - start;  in mac_pdma_recv()
260 		return start - addr; /* Negated to indicate uncertain length */  in mac_pdma_send()
264 	return addr - start;  in mac_pdma_send()
274 	out_be32(hostdata->io + (CTRL_REG << 4), value);  in write_ctrl_reg()
280 	u8 __iomem *s = hostdata->pdma_io + (INPUT_DATA_REG << 4);  in macscsi_pread()
284 	hostdata->pdma_residual = len;  in macscsi_pread()
291 		if (macintosh_config->ident == MAC_MODEL_IIFX)  in macscsi_pread()
295 		bytes = mac_pdma_recv(s, d, min(hostdata->pdma_residual, 512));  in macscsi_pread()
299 			hostdata->pdma_residual -= bytes;  in macscsi_pread()
302 		if (hostdata->pdma_residual == 0)  in macscsi_pread()
308 			scmd_printk(KERN_DEBUG, hostdata->connected,  in macscsi_pread()
319 		dsprintk(NDEBUG_PSEUDO_DMA, hostdata->host,  in macscsi_pread()
320 		         "%s: bus error (%d/%d)\n", __func__, d - dst, len);  in macscsi_pread()
321 		NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host);  in macscsi_pread()
322 		result = -1;  in macscsi_pread()
326 	scmd_printk(KERN_ERR, hostdata->connected,  in macscsi_pread()
328 	NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host);  in macscsi_pread()
329 	result = -1;  in macscsi_pread()
331 	if (macintosh_config->ident == MAC_MODEL_IIFX)  in macscsi_pread()
340 	u8 __iomem *d = hostdata->pdma_io + (OUTPUT_DATA_REG << 4);  in macscsi_pwrite()
343 	hostdata->pdma_residual = len;  in macscsi_pwrite()
350 		if (macintosh_config->ident == MAC_MODEL_IIFX)  in macscsi_pwrite()
354 		bytes = mac_pdma_send(s, d, min(hostdata->pdma_residual, 512));  in macscsi_pwrite()
358 			hostdata->pdma_residual -= bytes;  in macscsi_pwrite()
361 		if (hostdata->pdma_residual == 0) {  in macscsi_pwrite()
366 				scmd_printk(KERN_ERR, hostdata->connected,  in macscsi_pwrite()
368 				result = -1;  in macscsi_pwrite()
376 			scmd_printk(KERN_DEBUG, hostdata->connected,  in macscsi_pwrite()
387 		dsprintk(NDEBUG_PSEUDO_DMA, hostdata->host,  in macscsi_pwrite()
388 		         "%s: bus error (%d/%d)\n", __func__, s - src, len);  in macscsi_pwrite()
389 		NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host);  in macscsi_pwrite()
390 		result = -1;  in macscsi_pwrite()
394 	scmd_printk(KERN_ERR, hostdata->connected,  in macscsi_pwrite()
396 	NCR5380_dprint(NDEBUG_PSEUDO_DMA, hostdata->host);  in macscsi_pwrite()
397 	result = -1;  in macscsi_pwrite()
399 	if (macintosh_config->ident == MAC_MODEL_IIFX)  in macscsi_pwrite()
407 	if (hostdata->flags & FLAG_NO_PSEUDO_DMA ||  in macscsi_dma_xfer_len()
408 	    cmd->SCp.this_residual < setup_use_pdma)  in macscsi_dma_xfer_len()
411 	return cmd->SCp.this_residual;  in macscsi_dma_xfer_len()
416 	return hostdata->pdma_residual;  in macscsi_dma_residual()
425 	.module			= THIS_MODULE,
436 	.dma_boundary		= PAGE_SIZE - 1,
443 	struct Scsi_Host *instance;  in mac_scsi_probe()  local
451 		return -ENODEV;  in mac_scsi_probe()
457 	if (!hwreg_present((unsigned char *)pio_mem->start +  in mac_scsi_probe()
459 		pr_info(PFX "no device detected at %pap\n", &pio_mem->start);  in mac_scsi_probe()
460 		return -ENODEV;  in mac_scsi_probe()
472 	instance = scsi_host_alloc(&mac_scsi_template,  in mac_scsi_probe()
474 	if (!instance)  in mac_scsi_probe()
475 		return -ENOMEM;  in mac_scsi_probe()
478 		instance->irq = irq->start;  in mac_scsi_probe()
480 		instance->irq = NO_IRQ;  in mac_scsi_probe()
482 	hostdata = shost_priv(instance);  in mac_scsi_probe()
483 	hostdata->base = pio_mem->start;  in mac_scsi_probe()
484 	hostdata->io = (u8 __iomem *)pio_mem->start;  in mac_scsi_probe()
487 		hostdata->pdma_io = (u8 __iomem *)pdma_mem->start;  in mac_scsi_probe()
493 	error = NCR5380_init(instance, host_flags | FLAG_LATE_DMA_SETUP);  in mac_scsi_probe()
497 	if (instance->irq != NO_IRQ) {  in mac_scsi_probe()
498 		error = request_irq(instance->irq, macscsi_intr, IRQF_SHARED,  in mac_scsi_probe()
499 		                    "NCR5380", instance);  in mac_scsi_probe()
504 	NCR5380_maybe_reset_bus(instance);  in mac_scsi_probe()
506 	error = scsi_add_host(instance, NULL);  in mac_scsi_probe()
510 	platform_set_drvdata(pdev, instance);  in mac_scsi_probe()
512 	scsi_scan_host(instance);  in mac_scsi_probe()
516 	if (instance->irq != NO_IRQ)  in mac_scsi_probe()
517 		free_irq(instance->irq, instance);  in mac_scsi_probe()
519 	NCR5380_exit(instance);  in mac_scsi_probe()
521 	scsi_host_put(instance);  in mac_scsi_probe()
527 	struct Scsi_Host *instance = platform_get_drvdata(pdev);  in mac_scsi_remove()  local
529 	scsi_remove_host(instance);  in mac_scsi_remove()
530 	if (instance->irq != NO_IRQ)  in mac_scsi_remove()
531 		free_irq(instance->irq, instance);  in mac_scsi_remove()
532 	NCR5380_exit(instance);  in mac_scsi_remove()
533 	scsi_host_put(instance);  in mac_scsi_remove()