2 * Generic Generic NCR5380 driver
4 * Copyright 1995-2002, Russell King
6 #include <linux/module.h>
7 #include <linux/ioport.h>
8 #include <linux/blkdev.h>
9 #include <linux/init.h>
11 #include <asm/ecard.h>
14 #include <scsi/scsi_host.h>
16 #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
17 #define NCR5380_read(reg) cumanascsi_read(instance, reg)
18 #define NCR5380_write(reg, value) cumanascsi_write(instance, reg, value)
20 #define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
21 #define NCR5380_dma_recv_setup cumanascsi_pread
22 #define NCR5380_dma_send_setup cumanascsi_pwrite
24 #define NCR5380_intr cumanascsi_intr
25 #define NCR5380_queue_command cumanascsi_queue_command
26 #define NCR5380_info cumanascsi_info
28 #define NCR5380_implementation_fields \
33 #include "../NCR5380.h"
35 void cumanascsi_setup(char *str, int *ints)
41 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
42 #define H(v) (((v)>>16)|((v) & 0xffff0000))
44 static inline int cumanascsi_pwrite(struct Scsi_Host *host,
45 unsigned char *addr, int len)
48 void __iomem *dma = priv(host)->dma + 0x2000;
52 writeb(0x02, priv(host)->base + CTRL);
53 laddr = (unsigned long *)addr;
58 status = readb(priv(host)->base + STAT);
63 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
64 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
65 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
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);
76 addr = (unsigned char *)laddr;
77 writeb(0x12, priv(host)->base + CTRL);
82 status = readb(priv(host)->base + STAT);
92 status = readb(priv(host)->base + STAT);
103 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
110 static inline int cumanascsi_pread(struct Scsi_Host *host,
111 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);
175 static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
177 void __iomem *base = priv(host)->base;
180 writeb(0, base + CTRL);
182 val = readb(base + 0x2100 + (reg << 2));
184 priv(host)->ctrl = 0x40;
185 writeb(0x40, base + CTRL);
190 static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
192 void __iomem *base = priv(host)->base;
194 writeb(0, base + CTRL);
196 writeb(value, base + 0x2100 + (reg << 2));
198 priv(host)->ctrl = 0x40;
199 writeb(0x40, base + CTRL);
202 #include "../NCR5380.c"
204 static struct scsi_host_template cumanascsi_template = {
205 .module = THIS_MODULE,
206 .name = "Cumana 16-bit SCSI",
207 .info = cumanascsi_info,
208 .queuecommand = cumanascsi_queue_command,
209 .eh_abort_handler = NCR5380_abort,
210 .eh_bus_reset_handler = NCR5380_bus_reset,
213 .sg_tablesize = SG_ALL,
215 .use_clustering = DISABLE_CLUSTERING,
216 .proc_name = "CumanaSCSI-1",
217 .cmd_size = NCR5380_CMD_SIZE,
221 static int cumanascsi1_probe(struct expansion_card *ec,
222 const struct ecard_id *id)
224 struct Scsi_Host *host;
227 ret = ecard_request_resources(ec);
231 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
237 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
238 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
239 priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
240 ecard_resource_len(ec, ECARD_RES_MEMC));
241 if (!priv(host)->base || !priv(host)->dma) {
248 ret = NCR5380_init(host, FLAG_DMA_FIXUP);
252 NCR5380_maybe_reset_bus(host);
254 priv(host)->ctrl = 0;
255 writeb(0, priv(host)->base + CTRL);
257 ret = request_irq(host->irq, cumanascsi_intr, 0,
258 "CumanaSCSI-1", host);
260 printk("scsi%d: IRQ%d not free: %d\n",
261 host->host_no, host->irq, ret);
265 ret = scsi_add_host(host, &ec->dev);
269 scsi_scan_host(host);
273 free_irq(host->irq, host);
277 iounmap(priv(host)->base);
278 iounmap(priv(host)->dma);
281 ecard_release_resources(ec);
286 static void cumanascsi1_remove(struct expansion_card *ec)
288 struct Scsi_Host *host = ecard_get_drvdata(ec);
290 ecard_set_drvdata(ec, NULL);
292 scsi_remove_host(host);
293 free_irq(host->irq, host);
295 iounmap(priv(host)->base);
296 iounmap(priv(host)->dma);
298 ecard_release_resources(ec);
301 static const struct ecard_id cumanascsi1_cids[] = {
302 { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
306 static struct ecard_driver cumanascsi1_driver = {
307 .probe = cumanascsi1_probe,
308 .remove = cumanascsi1_remove,
309 .id_table = cumanascsi1_cids,
311 .name = "cumanascsi1",
315 static int __init cumanascsi_init(void)
317 return ecard_register_driver(&cumanascsi1_driver);
320 static void __exit cumanascsi_exit(void)
322 ecard_remove_driver(&cumanascsi1_driver);
325 module_init(cumanascsi_init);
326 module_exit(cumanascsi_exit);
328 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
329 MODULE_LICENSE("GPL");