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>
17 #include <scsi/scsi_host.h>
19 #include <scsi/scsicam.h>
24 #define CUMANASCSI_PUBLIC_RELEASE 1
26 #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
27 #define NCR5380_local_declare() struct Scsi_Host *_instance
28 #define NCR5380_setup(instance) _instance = instance
29 #define NCR5380_read(reg) cumanascsi_read(_instance, reg)
30 #define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value)
31 #define NCR5380_intr cumanascsi_intr
32 #define NCR5380_queue_command cumanascsi_queue_command
33 #define NCR5380_proc_info cumanascsi_proc_info
35 #define NCR5380_implementation_fields \
40 #define BOARD_NORMAL 0
41 #define BOARD_NCR53C400 1
43 #include "../NCR5380.h"
45 void cumanascsi_setup(char *str, int *ints)
49 const char *cumanascsi_info(struct Scsi_Host *spnt)
56 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
57 #define H(v) (((v)>>16)|((v) & 0xffff0000))
60 NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len)
63 void __iomem *dma = priv(host)->dma + 0x2000;
67 writeb(0x02, priv(host)->base + CTRL);
68 laddr = (unsigned long *)addr;
73 status = readb(priv(host)->base + STAT);
78 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
79 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
80 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
81 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
82 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
83 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
84 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
85 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
91 addr = (unsigned char *)laddr;
92 writeb(0x12, priv(host)->base + CTRL);
97 status = readb(priv(host)->base + STAT);
102 writeb(*addr++, dma);
107 status = readb(priv(host)->base + STAT);
112 writeb(*addr++, dma);
118 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
123 NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len)
125 unsigned long *laddr;
126 void __iomem *dma = priv(host)->dma + 0x2000;
130 writeb(0x00, priv(host)->base + CTRL);
131 laddr = (unsigned long *)addr;
135 status = readb(priv(host)->base + STAT);
140 *laddr++ = readw(dma) | (readw(dma) << 16);
141 *laddr++ = readw(dma) | (readw(dma) << 16);
142 *laddr++ = readw(dma) | (readw(dma) << 16);
143 *laddr++ = readw(dma) | (readw(dma) << 16);
144 *laddr++ = readw(dma) | (readw(dma) << 16);
145 *laddr++ = readw(dma) | (readw(dma) << 16);
146 *laddr++ = readw(dma) | (readw(dma) << 16);
147 *laddr++ = readw(dma) | (readw(dma) << 16);
153 addr = (unsigned char *)laddr;
154 writeb(0x10, priv(host)->base + CTRL);
159 status = readb(priv(host)->base + STAT);
164 *addr++ = readb(dma);
169 status = readb(priv(host)->base + STAT);
174 *addr++ = readb(dma);
180 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
184 static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
186 void __iomem *base = priv(host)->base;
189 writeb(0, base + CTRL);
191 val = readb(base + 0x2100 + (reg << 2));
193 priv(host)->ctrl = 0x40;
194 writeb(0x40, base + CTRL);
199 static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
201 void __iomem *base = priv(host)->base;
203 writeb(0, base + CTRL);
205 writeb(value, base + 0x2100 + (reg << 2));
207 priv(host)->ctrl = 0x40;
208 writeb(0x40, base + CTRL);
211 #include "../NCR5380.c"
213 static struct scsi_host_template cumanascsi_template = {
214 .module = THIS_MODULE,
215 .name = "Cumana 16-bit SCSI",
216 .info = cumanascsi_info,
217 .queuecommand = cumanascsi_queue_command,
218 .eh_abort_handler = NCR5380_abort,
219 .eh_bus_reset_handler = NCR5380_bus_reset,
222 .sg_tablesize = SG_ALL,
224 .use_clustering = DISABLE_CLUSTERING,
225 .proc_name = "CumanaSCSI-1",
229 cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
231 struct Scsi_Host *host;
234 ret = ecard_request_resources(ec);
238 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
244 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
245 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
246 priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
247 ecard_resource_len(ec, ECARD_RES_MEMC));
248 if (!priv(host)->base || !priv(host)->dma) {
255 NCR5380_init(host, 0);
257 priv(host)->ctrl = 0;
258 writeb(0, priv(host)->base + CTRL);
260 host->n_io_port = 255;
261 if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
266 ret = request_irq(host->irq, cumanascsi_intr, IRQF_DISABLED,
267 "CumanaSCSI-1", host);
269 printk("scsi%d: IRQ%d not free: %d\n",
270 host->host_no, host->irq, ret);
274 printk("scsi%d: at port 0x%08lx irq %d",
275 host->host_no, host->io_port, host->irq);
276 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
277 host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
278 printk("\nscsi%d:", host->host_no);
279 NCR5380_print_options(host);
282 ret = scsi_add_host(host, &ec->dev);
286 scsi_scan_host(host);
290 free_irq(host->irq, host);
292 iounmap(priv(host)->base);
293 iounmap(priv(host)->dma);
296 ecard_release_resources(ec);
301 static void __devexit cumanascsi1_remove(struct expansion_card *ec)
303 struct Scsi_Host *host = ecard_get_drvdata(ec);
305 ecard_set_drvdata(ec, NULL);
307 scsi_remove_host(host);
308 free_irq(host->irq, host);
310 iounmap(priv(host)->base);
311 iounmap(priv(host)->dma);
313 ecard_release_resources(ec);
316 static const struct ecard_id cumanascsi1_cids[] = {
317 { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
321 static struct ecard_driver cumanascsi1_driver = {
322 .probe = cumanascsi1_probe,
323 .remove = __devexit_p(cumanascsi1_remove),
324 .id_table = cumanascsi1_cids,
326 .name = "cumanascsi1",
330 static int __init cumanascsi_init(void)
332 return ecard_register_driver(&cumanascsi1_driver);
335 static void __exit cumanascsi_exit(void)
337 ecard_remove_driver(&cumanascsi1_driver);
340 module_init(cumanascsi_init);
341 module_exit(cumanascsi_exit);
343 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
344 MODULE_LICENSE("GPL");