2 * Generic Generic NCR5380 driver
4 * Copyright 1995-2002, Russell King
6 #include <linux/module.h>
7 #include <linux/signal.h>
8 #include <linux/ioport.h>
9 #include <linux/delay.h>
10 #include <linux/blkdev.h>
11 #include <linux/init.h>
13 #include <asm/ecard.h>
16 #include <scsi/scsi_host.h>
18 #include <scsi/scsicam.h>
22 #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
23 #define NCR5380_read(reg) cumanascsi_read(instance, reg)
24 #define NCR5380_write(reg, value) cumanascsi_write(instance, reg, value)
26 #define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
28 #define NCR5380_intr cumanascsi_intr
29 #define NCR5380_queue_command cumanascsi_queue_command
30 #define NCR5380_info cumanascsi_info
32 #define NCR5380_implementation_fields \
37 #include "../NCR5380.h"
39 void cumanascsi_setup(char *str, int *ints)
45 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
46 #define H(v) (((v)>>16)|((v) & 0xffff0000))
49 NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len)
52 void __iomem *dma = priv(host)->dma + 0x2000;
56 writeb(0x02, priv(host)->base + CTRL);
57 laddr = (unsigned long *)addr;
62 status = readb(priv(host)->base + STAT);
67 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
68 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
69 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
70 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
71 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
72 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
73 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
74 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
80 addr = (unsigned char *)laddr;
81 writeb(0x12, priv(host)->base + CTRL);
86 status = readb(priv(host)->base + STAT);
96 status = readb(priv(host)->base + STAT);
101 writeb(*addr++, dma);
107 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
112 NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len)
114 unsigned long *laddr;
115 void __iomem *dma = priv(host)->dma + 0x2000;
119 writeb(0x00, priv(host)->base + CTRL);
120 laddr = (unsigned long *)addr;
124 status = readb(priv(host)->base + STAT);
129 *laddr++ = readw(dma) | (readw(dma) << 16);
130 *laddr++ = readw(dma) | (readw(dma) << 16);
131 *laddr++ = readw(dma) | (readw(dma) << 16);
132 *laddr++ = readw(dma) | (readw(dma) << 16);
133 *laddr++ = readw(dma) | (readw(dma) << 16);
134 *laddr++ = readw(dma) | (readw(dma) << 16);
135 *laddr++ = readw(dma) | (readw(dma) << 16);
136 *laddr++ = readw(dma) | (readw(dma) << 16);
142 addr = (unsigned char *)laddr;
143 writeb(0x10, priv(host)->base + CTRL);
148 status = readb(priv(host)->base + STAT);
153 *addr++ = readb(dma);
158 status = readb(priv(host)->base + STAT);
163 *addr++ = readb(dma);
169 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
173 static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
175 void __iomem *base = priv(host)->base;
178 writeb(0, base + CTRL);
180 val = readb(base + 0x2100 + (reg << 2));
182 priv(host)->ctrl = 0x40;
183 writeb(0x40, base + CTRL);
188 static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
190 void __iomem *base = priv(host)->base;
192 writeb(0, base + CTRL);
194 writeb(value, base + 0x2100 + (reg << 2));
196 priv(host)->ctrl = 0x40;
197 writeb(0x40, base + CTRL);
200 #include "../NCR5380.c"
202 static struct scsi_host_template cumanascsi_template = {
203 .module = THIS_MODULE,
204 .name = "Cumana 16-bit SCSI",
205 .info = cumanascsi_info,
206 .queuecommand = cumanascsi_queue_command,
207 .eh_abort_handler = NCR5380_abort,
208 .eh_bus_reset_handler = NCR5380_bus_reset,
211 .sg_tablesize = SG_ALL,
213 .use_clustering = DISABLE_CLUSTERING,
214 .proc_name = "CumanaSCSI-1",
217 static int cumanascsi1_probe(struct expansion_card *ec,
218 const struct ecard_id *id)
220 struct Scsi_Host *host;
223 ret = ecard_request_resources(ec);
227 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
233 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
234 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
235 priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
236 ecard_resource_len(ec, ECARD_RES_MEMC));
237 if (!priv(host)->base || !priv(host)->dma) {
244 ret = NCR5380_init(host, 0);
248 NCR5380_maybe_reset_bus(host);
250 priv(host)->ctrl = 0;
251 writeb(0, priv(host)->base + CTRL);
253 ret = request_irq(host->irq, cumanascsi_intr, 0,
254 "CumanaSCSI-1", host);
256 printk("scsi%d: IRQ%d not free: %d\n",
257 host->host_no, host->irq, ret);
261 ret = scsi_add_host(host, &ec->dev);
265 scsi_scan_host(host);
269 free_irq(host->irq, host);
273 iounmap(priv(host)->base);
274 iounmap(priv(host)->dma);
277 ecard_release_resources(ec);
282 static void cumanascsi1_remove(struct expansion_card *ec)
284 struct Scsi_Host *host = ecard_get_drvdata(ec);
286 ecard_set_drvdata(ec, NULL);
288 scsi_remove_host(host);
289 free_irq(host->irq, host);
291 iounmap(priv(host)->base);
292 iounmap(priv(host)->dma);
294 ecard_release_resources(ec);
297 static const struct ecard_id cumanascsi1_cids[] = {
298 { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
302 static struct ecard_driver cumanascsi1_driver = {
303 .probe = cumanascsi1_probe,
304 .remove = cumanascsi1_remove,
305 .id_table = cumanascsi1_cids,
307 .name = "cumanascsi1",
311 static int __init cumanascsi_init(void)
313 return ecard_register_driver(&cumanascsi1_driver);
316 static void __exit cumanascsi_exit(void)
318 ecard_remove_driver(&cumanascsi1_driver);
321 module_init(cumanascsi_init);
322 module_exit(cumanascsi_exit);
324 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
325 MODULE_LICENSE("GPL");