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_local_declare() struct Scsi_Host *_instance
24 #define NCR5380_setup(instance) _instance = instance
25 #define NCR5380_read(reg) cumanascsi_read(_instance, reg)
26 #define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value)
27 #define NCR5380_intr cumanascsi_intr
28 #define NCR5380_queue_command cumanascsi_queue_command
29 #define NCR5380_info cumanascsi_info
31 #define NCR5380_implementation_fields \
36 #include "../NCR5380.h"
38 void cumanascsi_setup(char *str, int *ints)
44 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
45 #define H(v) (((v)>>16)|((v) & 0xffff0000))
48 NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len)
51 void __iomem *dma = priv(host)->dma + 0x2000;
55 writeb(0x02, priv(host)->base + CTRL);
56 laddr = (unsigned long *)addr;
61 status = readb(priv(host)->base + STAT);
66 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
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);
79 addr = (unsigned char *)laddr;
80 writeb(0x12, priv(host)->base + CTRL);
85 status = readb(priv(host)->base + STAT);
95 status = readb(priv(host)->base + STAT);
100 writeb(*addr++, dma);
106 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
111 NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len)
113 unsigned long *laddr;
114 void __iomem *dma = priv(host)->dma + 0x2000;
118 writeb(0x00, priv(host)->base + CTRL);
119 laddr = (unsigned long *)addr;
123 status = readb(priv(host)->base + STAT);
128 *laddr++ = readw(dma) | (readw(dma) << 16);
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);
141 addr = (unsigned char *)laddr;
142 writeb(0x10, priv(host)->base + CTRL);
147 status = readb(priv(host)->base + STAT);
152 *addr++ = readb(dma);
157 status = readb(priv(host)->base + STAT);
162 *addr++ = readb(dma);
168 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
172 static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
174 void __iomem *base = priv(host)->base;
177 writeb(0, base + CTRL);
179 val = readb(base + 0x2100 + (reg << 2));
181 priv(host)->ctrl = 0x40;
182 writeb(0x40, base + CTRL);
187 static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
189 void __iomem *base = priv(host)->base;
191 writeb(0, base + CTRL);
193 writeb(value, base + 0x2100 + (reg << 2));
195 priv(host)->ctrl = 0x40;
196 writeb(0x40, base + CTRL);
199 #include "../NCR5380.c"
201 static struct scsi_host_template cumanascsi_template = {
202 .module = THIS_MODULE,
203 .name = "Cumana 16-bit SCSI",
204 .info = cumanascsi_info,
205 .queuecommand = cumanascsi_queue_command,
206 .eh_abort_handler = NCR5380_abort,
207 .eh_bus_reset_handler = NCR5380_bus_reset,
210 .sg_tablesize = SG_ALL,
212 .use_clustering = DISABLE_CLUSTERING,
213 .proc_name = "CumanaSCSI-1",
216 static int cumanascsi1_probe(struct expansion_card *ec,
217 const struct ecard_id *id)
219 struct Scsi_Host *host;
222 ret = ecard_request_resources(ec);
226 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
232 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
233 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
234 priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
235 ecard_resource_len(ec, ECARD_RES_MEMC));
236 if (!priv(host)->base || !priv(host)->dma) {
243 NCR5380_init(host, 0);
245 priv(host)->ctrl = 0;
246 writeb(0, priv(host)->base + CTRL);
248 host->n_io_port = 255;
249 if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
254 ret = request_irq(host->irq, cumanascsi_intr, 0,
255 "CumanaSCSI-1", host);
257 printk("scsi%d: IRQ%d not free: %d\n",
258 host->host_no, host->irq, ret);
262 ret = scsi_add_host(host, &ec->dev);
266 scsi_scan_host(host);
270 free_irq(host->irq, host);
272 iounmap(priv(host)->base);
273 iounmap(priv(host)->dma);
276 ecard_release_resources(ec);
281 static void cumanascsi1_remove(struct expansion_card *ec)
283 struct Scsi_Host *host = ecard_get_drvdata(ec);
285 ecard_set_drvdata(ec, NULL);
287 scsi_remove_host(host);
288 free_irq(host->irq, host);
290 iounmap(priv(host)->base);
291 iounmap(priv(host)->dma);
293 ecard_release_resources(ec);
296 static const struct ecard_id cumanascsi1_cids[] = {
297 { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
301 static struct ecard_driver cumanascsi1_driver = {
302 .probe = cumanascsi1_probe,
303 .remove = cumanascsi1_remove,
304 .id_table = cumanascsi1_cids,
306 .name = "cumanascsi1",
310 static int __init cumanascsi_init(void)
312 return ecard_register_driver(&cumanascsi1_driver);
315 static void __exit cumanascsi_exit(void)
317 ecard_remove_driver(&cumanascsi1_driver);
320 module_init(cumanascsi_init);
321 module_exit(cumanascsi_exit);
323 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
324 MODULE_LICENSE("GPL");