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
34 #define NCR5380_implementation_fields \
39 #include "../NCR5380.h"
41 void cumanascsi_setup(char *str, int *ints)
45 const char *cumanascsi_info(struct Scsi_Host *spnt)
52 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
53 #define H(v) (((v)>>16)|((v) & 0xffff0000))
56 NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len)
59 void __iomem *dma = priv(host)->dma + 0x2000;
63 writeb(0x02, priv(host)->base + CTRL);
64 laddr = (unsigned long *)addr;
69 status = readb(priv(host)->base + STAT);
74 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
75 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
76 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
77 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
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);
87 addr = (unsigned char *)laddr;
88 writeb(0x12, priv(host)->base + CTRL);
93 status = readb(priv(host)->base + STAT);
103 status = readb(priv(host)->base + STAT);
108 writeb(*addr++, dma);
114 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
119 NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len)
121 unsigned long *laddr;
122 void __iomem *dma = priv(host)->dma + 0x2000;
126 writeb(0x00, priv(host)->base + CTRL);
127 laddr = (unsigned long *)addr;
131 status = readb(priv(host)->base + STAT);
136 *laddr++ = readw(dma) | (readw(dma) << 16);
137 *laddr++ = readw(dma) | (readw(dma) << 16);
138 *laddr++ = readw(dma) | (readw(dma) << 16);
139 *laddr++ = readw(dma) | (readw(dma) << 16);
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);
149 addr = (unsigned char *)laddr;
150 writeb(0x10, priv(host)->base + CTRL);
155 status = readb(priv(host)->base + STAT);
160 *addr++ = readb(dma);
165 status = readb(priv(host)->base + STAT);
170 *addr++ = readb(dma);
176 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
180 static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
182 void __iomem *base = priv(host)->base;
185 writeb(0, base + CTRL);
187 val = readb(base + 0x2100 + (reg << 2));
189 priv(host)->ctrl = 0x40;
190 writeb(0x40, base + CTRL);
195 static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
197 void __iomem *base = priv(host)->base;
199 writeb(0, base + CTRL);
201 writeb(value, base + 0x2100 + (reg << 2));
203 priv(host)->ctrl = 0x40;
204 writeb(0x40, base + CTRL);
207 #include "../NCR5380.c"
209 static struct scsi_host_template cumanascsi_template = {
210 .module = THIS_MODULE,
211 .name = "Cumana 16-bit SCSI",
212 .info = cumanascsi_info,
213 .queuecommand = cumanascsi_queue_command,
214 .eh_abort_handler = NCR5380_abort,
215 .eh_bus_reset_handler = NCR5380_bus_reset,
218 .sg_tablesize = SG_ALL,
220 .use_clustering = DISABLE_CLUSTERING,
221 .proc_name = "CumanaSCSI-1",
224 static int cumanascsi1_probe(struct expansion_card *ec,
225 const struct ecard_id *id)
227 struct Scsi_Host *host;
230 ret = ecard_request_resources(ec);
234 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
240 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
241 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
242 priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
243 ecard_resource_len(ec, ECARD_RES_MEMC));
244 if (!priv(host)->base || !priv(host)->dma) {
251 NCR5380_init(host, 0);
253 priv(host)->ctrl = 0;
254 writeb(0, priv(host)->base + CTRL);
256 host->n_io_port = 255;
257 if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
262 ret = request_irq(host->irq, cumanascsi_intr, 0,
263 "CumanaSCSI-1", host);
265 printk("scsi%d: IRQ%d not free: %d\n",
266 host->host_no, host->irq, ret);
270 printk("scsi%d: at port 0x%08lx irq %d",
271 host->host_no, host->io_port, host->irq);
272 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
273 host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
274 printk("\nscsi%d:", host->host_no);
275 NCR5380_print_options(host);
278 ret = scsi_add_host(host, &ec->dev);
282 scsi_scan_host(host);
286 free_irq(host->irq, host);
288 iounmap(priv(host)->base);
289 iounmap(priv(host)->dma);
292 ecard_release_resources(ec);
297 static void cumanascsi1_remove(struct expansion_card *ec)
299 struct Scsi_Host *host = ecard_get_drvdata(ec);
301 ecard_set_drvdata(ec, NULL);
303 scsi_remove_host(host);
304 free_irq(host->irq, host);
306 iounmap(priv(host)->base);
307 iounmap(priv(host)->dma);
309 ecard_release_resources(ec);
312 static const struct ecard_id cumanascsi1_cids[] = {
313 { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
317 static struct ecard_driver cumanascsi1_driver = {
318 .probe = cumanascsi1_probe,
319 .remove = cumanascsi1_remove,
320 .id_table = cumanascsi1_cids,
322 .name = "cumanascsi1",
326 static int __init cumanascsi_init(void)
328 return ecard_register_driver(&cumanascsi1_driver);
331 static void __exit cumanascsi_exit(void)
333 ecard_remove_driver(&cumanascsi1_driver);
336 module_init(cumanascsi_init);
337 module_exit(cumanascsi_exit);
339 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
340 MODULE_LICENSE("GPL");