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
23 #define NCR5380_dma_residual(instance) (0)
25 #define NCR5380_intr cumanascsi_intr
26 #define NCR5380_queue_command cumanascsi_queue_command
27 #define NCR5380_info cumanascsi_info
29 #define NCR5380_implementation_fields \
34 #include "../NCR5380.h"
38 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
39 #define H(v) (((v)>>16)|((v) & 0xffff0000))
41 static inline int cumanascsi_pwrite(struct Scsi_Host *host,
42 unsigned char *addr, int len)
45 void __iomem *dma = priv(host)->dma + 0x2000;
49 writeb(0x02, priv(host)->base + CTRL);
50 laddr = (unsigned long *)addr;
55 status = readb(priv(host)->base + STAT);
60 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
61 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
62 v=*laddr++; writew(L(v), dma); writew(H(v), dma);
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);
73 addr = (unsigned char *)laddr;
74 writeb(0x12, priv(host)->base + CTRL);
79 status = readb(priv(host)->base + STAT);
89 status = readb(priv(host)->base + STAT);
100 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
107 static inline int cumanascsi_pread(struct Scsi_Host *host,
108 unsigned char *addr, int len)
110 unsigned long *laddr;
111 void __iomem *dma = priv(host)->dma + 0x2000;
115 writeb(0x00, priv(host)->base + CTRL);
116 laddr = (unsigned long *)addr;
120 status = readb(priv(host)->base + STAT);
125 *laddr++ = readw(dma) | (readw(dma) << 16);
126 *laddr++ = readw(dma) | (readw(dma) << 16);
127 *laddr++ = readw(dma) | (readw(dma) << 16);
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);
138 addr = (unsigned char *)laddr;
139 writeb(0x10, priv(host)->base + CTRL);
144 status = readb(priv(host)->base + STAT);
149 *addr++ = readb(dma);
154 status = readb(priv(host)->base + STAT);
159 *addr++ = readb(dma);
165 writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
172 static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
174 void __iomem *base = priv(host)->base;
177 writeb(0, base + CTRL);
179 val = readb(base + 0x2100 + (reg << 2));
181 priv(host)->ctrl = 0x40;
182 writeb(0x40, base + CTRL);
187 static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
189 void __iomem *base = priv(host)->base;
191 writeb(0, base + CTRL);
193 writeb(value, base + 0x2100 + (reg << 2));
195 priv(host)->ctrl = 0x40;
196 writeb(0x40, base + CTRL);
199 #include "../NCR5380.c"
201 static struct scsi_host_template cumanascsi_template = {
202 .module = THIS_MODULE,
203 .name = "Cumana 16-bit SCSI",
204 .info = cumanascsi_info,
205 .queuecommand = cumanascsi_queue_command,
206 .eh_abort_handler = NCR5380_abort,
207 .eh_bus_reset_handler = NCR5380_bus_reset,
210 .sg_tablesize = SG_ALL,
212 .use_clustering = DISABLE_CLUSTERING,
213 .proc_name = "CumanaSCSI-1",
214 .cmd_size = NCR5380_CMD_SIZE,
218 static int cumanascsi1_probe(struct expansion_card *ec,
219 const struct ecard_id *id)
221 struct Scsi_Host *host;
224 ret = ecard_request_resources(ec);
228 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
234 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
235 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
236 priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
237 ecard_resource_len(ec, ECARD_RES_MEMC));
238 if (!priv(host)->base || !priv(host)->dma) {
245 ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP);
249 NCR5380_maybe_reset_bus(host);
251 priv(host)->ctrl = 0;
252 writeb(0, priv(host)->base + CTRL);
254 ret = request_irq(host->irq, cumanascsi_intr, 0,
255 "CumanaSCSI-1", host);
257 printk("scsi%d: IRQ%d not free: %d\n",
258 host->host_no, host->irq, ret);
262 ret = scsi_add_host(host, &ec->dev);
266 scsi_scan_host(host);
270 free_irq(host->irq, host);
274 iounmap(priv(host)->base);
275 iounmap(priv(host)->dma);
278 ecard_release_resources(ec);
283 static void cumanascsi1_remove(struct expansion_card *ec)
285 struct Scsi_Host *host = ecard_get_drvdata(ec);
287 ecard_set_drvdata(ec, NULL);
289 scsi_remove_host(host);
290 free_irq(host->irq, host);
292 iounmap(priv(host)->base);
293 iounmap(priv(host)->dma);
295 ecard_release_resources(ec);
298 static const struct ecard_id cumanascsi1_cids[] = {
299 { MANU_CUMANA, PROD_CUMANA_SCSI_1 },
303 static struct ecard_driver cumanascsi1_driver = {
304 .probe = cumanascsi1_probe,
305 .remove = cumanascsi1_remove,
306 .id_table = cumanascsi1_cids,
308 .name = "cumanascsi1",
312 static int __init cumanascsi_init(void)
314 return ecard_register_driver(&cumanascsi1_driver);
317 static void __exit cumanascsi_exit(void)
319 ecard_remove_driver(&cumanascsi1_driver);
322 module_init(cumanascsi_init);
323 module_exit(cumanascsi_exit);
325 MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
326 MODULE_LICENSE("GPL");