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 #define BOARD_NORMAL 0
40 #define BOARD_NCR53C400 1
42 #include "../NCR5380.h"
44 void cumanascsi_setup(char *str, int *ints)
48 const char *cumanascsi_info(struct Scsi_Host *spnt)
55 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
56 #define H(v) (((v)>>16)|((v) & 0xffff0000))
59 NCR5380_pwrite(struct Scsi_Host *host, unsigned char *addr, int len)
62 void __iomem *dma = priv(host)->dma + 0x2000;
66 writeb(0x02, priv(host)->base + CTRL);
67 laddr = (unsigned long *)addr;
72 status = readb(priv(host)->base + STAT);
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);
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);
90 addr = (unsigned char *)laddr;
91 writeb(0x12, priv(host)->base + CTRL);
96 status = readb(priv(host)->base + STAT);
101 writeb(*addr++, dma);
106 status = readb(priv(host)->base + STAT);
111 writeb(*addr++, dma);
117 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
122 NCR5380_pread(struct Scsi_Host *host, unsigned char *addr, int len)
124 unsigned long *laddr;
125 void __iomem *dma = priv(host)->dma + 0x2000;
129 writeb(0x00, priv(host)->base + CTRL);
130 laddr = (unsigned long *)addr;
134 status = readb(priv(host)->base + STAT);
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);
144 *laddr++ = readw(dma) | (readw(dma) << 16);
145 *laddr++ = readw(dma) | (readw(dma) << 16);
146 *laddr++ = readw(dma) | (readw(dma) << 16);
152 addr = (unsigned char *)laddr;
153 writeb(0x10, priv(host)->base + CTRL);
158 status = readb(priv(host)->base + STAT);
163 *addr++ = readb(dma);
168 status = readb(priv(host)->base + STAT);
173 *addr++ = readb(dma);
179 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
183 static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
185 void __iomem *base = priv(host)->base;
188 writeb(0, base + CTRL);
190 val = readb(base + 0x2100 + (reg << 2));
192 priv(host)->ctrl = 0x40;
193 writeb(0x40, base + CTRL);
198 static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
200 void __iomem *base = priv(host)->base;
202 writeb(0, base + CTRL);
204 writeb(value, base + 0x2100 + (reg << 2));
206 priv(host)->ctrl = 0x40;
207 writeb(0x40, base + CTRL);
210 #include "../NCR5380.c"
212 static struct scsi_host_template cumanascsi_template = {
213 .module = THIS_MODULE,
214 .name = "Cumana 16-bit SCSI",
215 .info = cumanascsi_info,
216 .queuecommand = cumanascsi_queue_command,
217 .eh_abort_handler = NCR5380_abort,
218 .eh_bus_reset_handler = NCR5380_bus_reset,
221 .sg_tablesize = SG_ALL,
223 .use_clustering = DISABLE_CLUSTERING,
224 .proc_name = "CumanaSCSI-1",
227 static int cumanascsi1_probe(struct expansion_card *ec,
228 const struct ecard_id *id)
230 struct Scsi_Host *host;
233 ret = ecard_request_resources(ec);
237 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
243 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
244 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
245 priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
246 ecard_resource_len(ec, ECARD_RES_MEMC));
247 if (!priv(host)->base || !priv(host)->dma) {
254 NCR5380_init(host, 0);
256 priv(host)->ctrl = 0;
257 writeb(0, priv(host)->base + CTRL);
259 host->n_io_port = 255;
260 if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
265 ret = request_irq(host->irq, cumanascsi_intr, 0,
266 "CumanaSCSI-1", host);
268 printk("scsi%d: IRQ%d not free: %d\n",
269 host->host_no, host->irq, ret);
273 printk("scsi%d: at port 0x%08lx irq %d",
274 host->host_no, host->io_port, host->irq);
275 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
276 host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
277 printk("\nscsi%d:", host->host_no);
278 NCR5380_print_options(host);
281 ret = scsi_add_host(host, &ec->dev);
285 scsi_scan_host(host);
289 free_irq(host->irq, host);
291 iounmap(priv(host)->base);
292 iounmap(priv(host)->dma);
295 ecard_release_resources(ec);
300 static void cumanascsi1_remove(struct expansion_card *ec)
302 struct Scsi_Host *host = ecard_get_drvdata(ec);
304 ecard_set_drvdata(ec, NULL);
306 scsi_remove_host(host);
307 free_irq(host->irq, host);
309 iounmap(priv(host)->base);
310 iounmap(priv(host)->dma);
312 ecard_release_resources(ec);
315 static const struct ecard_id cumanascsi1_cids[] = {
316 { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
320 static struct ecard_driver cumanascsi1_driver = {
321 .probe = cumanascsi1_probe,
322 .remove = cumanascsi1_remove,
323 .id_table = cumanascsi1_cids,
325 .name = "cumanascsi1",
329 static int __init cumanascsi_init(void)
331 return ecard_register_driver(&cumanascsi1_driver);
334 static void __exit cumanascsi_exit(void)
336 ecard_remove_driver(&cumanascsi1_driver);
339 module_init(cumanascsi_init);
340 module_exit(cumanascsi_exit);
342 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
343 MODULE_LICENSE("GPL");