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>
15 #include <asm/system.h>
18 #include <scsi/scsi_host.h>
20 #include <scsi/scsicam.h>
25 #define CUMANASCSI_PUBLIC_RELEASE 1
27 #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
28 #define NCR5380_local_declare() struct Scsi_Host *_instance
29 #define NCR5380_setup(instance) _instance = instance
30 #define NCR5380_read(reg) cumanascsi_read(_instance, reg)
31 #define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value)
32 #define NCR5380_intr cumanascsi_intr
33 #define NCR5380_queue_command cumanascsi_queue_command
34 #define NCR5380_proc_info cumanascsi_proc_info
36 #define NCR5380_implementation_fields \
41 #define BOARD_NORMAL 0
42 #define BOARD_NCR53C400 1
44 #include "../NCR5380.h"
46 void cumanascsi_setup(char *str, int *ints)
50 const char *cumanascsi_info(struct Scsi_Host *spnt)
57 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
58 #define H(v) (((v)>>16)|((v) & 0xffff0000))
61 NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len)
64 void __iomem *dma = priv(host)->dma + 0x2000;
68 writeb(0x02, priv(host)->base + CTRL);
69 laddr = (unsigned long *)addr;
74 status = readb(priv(host)->base + STAT);
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);
86 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
92 addr = (unsigned char *)laddr;
93 writeb(0x12, priv(host)->base + CTRL);
98 status = readb(priv(host)->base + STAT);
103 writeb(*addr++, dma);
108 status = readb(priv(host)->base + STAT);
113 writeb(*addr++, dma);
119 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
124 NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len)
126 unsigned long *laddr;
127 void __iomem *dma = priv(host)->dma + 0x2000;
131 writeb(0x00, priv(host)->base + CTRL);
132 laddr = (unsigned long *)addr;
136 status = readb(priv(host)->base + STAT);
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);
148 *laddr++ = readw(dma) | (readw(dma) << 16);
154 addr = (unsigned char *)laddr;
155 writeb(0x10, priv(host)->base + CTRL);
160 status = readb(priv(host)->base + STAT);
165 *addr++ = readb(dma);
170 status = readb(priv(host)->base + STAT);
175 *addr++ = readb(dma);
181 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
185 static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
187 void __iomem *base = priv(host)->base;
190 writeb(0, base + CTRL);
192 val = readb(base + 0x2100 + (reg << 2));
194 priv(host)->ctrl = 0x40;
195 writeb(0x40, base + CTRL);
200 static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
202 void __iomem *base = priv(host)->base;
204 writeb(0, base + CTRL);
206 writeb(value, base + 0x2100 + (reg << 2));
208 priv(host)->ctrl = 0x40;
209 writeb(0x40, base + CTRL);
212 #include "../NCR5380.c"
214 static struct scsi_host_template cumanascsi_template = {
215 .module = THIS_MODULE,
216 .name = "Cumana 16-bit SCSI",
217 .info = cumanascsi_info,
218 .queuecommand = cumanascsi_queue_command,
219 .eh_abort_handler = NCR5380_abort,
220 .eh_bus_reset_handler = NCR5380_bus_reset,
223 .sg_tablesize = SG_ALL,
225 .use_clustering = DISABLE_CLUSTERING,
226 .proc_name = "CumanaSCSI-1",
230 cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
232 struct Scsi_Host *host;
235 ret = ecard_request_resources(ec);
239 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
245 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
246 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
247 priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
248 ecard_resource_len(ec, ECARD_RES_MEMC));
249 if (!priv(host)->base || !priv(host)->dma) {
256 NCR5380_init(host, 0);
258 priv(host)->ctrl = 0;
259 writeb(0, priv(host)->base + CTRL);
261 host->n_io_port = 255;
262 if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
267 ret = request_irq(host->irq, cumanascsi_intr, IRQF_DISABLED,
268 "CumanaSCSI-1", host);
270 printk("scsi%d: IRQ%d not free: %d\n",
271 host->host_no, host->irq, ret);
275 printk("scsi%d: at port 0x%08lx irq %d",
276 host->host_no, host->io_port, host->irq);
277 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
278 host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
279 printk("\nscsi%d:", host->host_no);
280 NCR5380_print_options(host);
283 ret = scsi_add_host(host, &ec->dev);
287 scsi_scan_host(host);
291 free_irq(host->irq, host);
293 iounmap(priv(host)->base);
294 iounmap(priv(host)->dma);
297 ecard_release_resources(ec);
302 static void __devexit cumanascsi1_remove(struct expansion_card *ec)
304 struct Scsi_Host *host = ecard_get_drvdata(ec);
306 ecard_set_drvdata(ec, NULL);
308 scsi_remove_host(host);
309 free_irq(host->irq, host);
311 iounmap(priv(host)->base);
312 iounmap(priv(host)->dma);
314 ecard_release_resources(ec);
317 static const struct ecard_id cumanascsi1_cids[] = {
318 { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
322 static struct ecard_driver cumanascsi1_driver = {
323 .probe = cumanascsi1_probe,
324 .remove = __devexit_p(cumanascsi1_remove),
325 .id_table = cumanascsi1_cids,
327 .name = "cumanascsi1",
331 static int __init cumanascsi_init(void)
333 return ecard_register_driver(&cumanascsi1_driver);
336 static void __exit cumanascsi_exit(void)
338 ecard_remove_driver(&cumanascsi1_driver);
341 module_init(cumanascsi_init);
342 module_exit(cumanascsi_exit);
344 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
345 MODULE_LICENSE("GPL");