1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright 1995-2002, Russell King
7 #include <linux/module.h>
17 #define priv(host)			((struct NCR5380_hostdata *)(host)->hostdata)
31 	unsigned ctrl
39 #define CTRL	0x16fc  macro
48   u8 __iomem *base = hostdata->io;  in cumanascsi_pwrite()
49   u8 __iomem *dma = hostdata->pdma_io + 0x2000;  in cumanascsi_pwrite()
53   writeb(0x02, base + CTRL);  in cumanascsi_pwrite()
72     len -= 32;  in cumanascsi_pwrite()
78   writeb(0x12, base + CTRL);  in cumanascsi_pwrite()
89       if(--len == 0)  in cumanascsi_pwrite()
99       if(--len == 0)  in cumanascsi_pwrite()
104   writeb(hostdata->ctrl | 0x40, base + CTRL);  in cumanascsi_pwrite()
107 		return -1;  in cumanascsi_pwrite()
115   u8 __iomem *base = hostdata->io;  in cumanascsi_pread()
116   u8 __iomem *dma = hostdata->pdma_io + 0x2000;  in cumanascsi_pread()
120   writeb(0x00, base + CTRL);  in cumanascsi_pread()
138     len -= 32;  in cumanascsi_pread()
144   writeb(0x10, base + CTRL);  in cumanascsi_pread()
155       if(--len == 0)  in cumanascsi_pread()
165       if(--len == 0)  in cumanascsi_pread()
170   writeb(hostdata->ctrl | 0x40, base + CTRL);  in cumanascsi_pread()
173 		return -1;  in cumanascsi_pread()
180 	return cmd->transfersize;  in cumanascsi_dma_xfer_len()
186 	u8 __iomem *base = hostdata->io;  in cumanascsi_read()
189 	writeb(0, base + CTRL);  in cumanascsi_read()
193 	hostdata->ctrl = 0x40;  in cumanascsi_read()
194 	writeb(0x40, base + CTRL);  in cumanascsi_read()
202 	u8 __iomem *base = hostdata->io;  in cumanascsi_write()
204 	writeb(0, base + CTRL);  in cumanascsi_write()
208 	hostdata->ctrl = 0x40;  in cumanascsi_write()
209 	writeb(0x40, base + CTRL);  in cumanascsi_write()
215 	.module			= THIS_MODULE,
216 	.name			= "Cumana 16-bit SCSI",
225 	.proc_name		= "CumanaSCSI-1",
228 	.dma_boundary		= PAGE_SIZE - 1,
243 		ret = -ENOMEM;  in cumanascsi1_probe()
247 	priv(host)->io = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),  in cumanascsi1_probe()
249 	priv(host)->pdma_io = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),  in cumanascsi1_probe()
251 	if (!priv(host)->io || !priv(host)->pdma_io) {  in cumanascsi1_probe()
252 		ret = -ENOMEM;  in cumanascsi1_probe()
256 	host->irq = ec->irq;  in cumanascsi1_probe()
264         priv(host)->ctrl = 0;  in cumanascsi1_probe()
265         writeb(0, priv(host)->io + CTRL);  in cumanascsi1_probe()
267 	ret = request_irq(host->irq, cumanascsi_intr, 0,  in cumanascsi1_probe()
268 			  "CumanaSCSI-1", host);  in cumanascsi1_probe()
271 		    host->host_no, host->irq, ret);  in cumanascsi1_probe()
275 	ret = scsi_add_host(host, &ec->dev);  in cumanascsi1_probe()
283 	free_irq(host->irq, host);  in cumanascsi1_probe()
287 	iounmap(priv(host)->io);  in cumanascsi1_probe()
288 	iounmap(priv(host)->pdma_io);  in cumanascsi1_probe()
299 	void __iomem *base = priv(host)->io;  in cumanascsi1_remove()
300 	void __iomem *dma = priv(host)->pdma_io;  in cumanascsi1_remove()
305 	free_irq(host->irq, host);  in cumanascsi1_remove()
340 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");