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(hostdata, reg)
18 #define NCR5380_write(reg, value) cumanascsi_write(hostdata, reg, value)
20 #define NCR5380_dma_xfer_len cumanascsi_dma_xfer_len
21 #define NCR5380_dma_recv_setup cumanascsi_pread
22 #define NCR5380_dma_send_setup cumanascsi_pwrite
23 #define NCR5380_dma_residual NCR5380_dma_residual_none
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 \
32 struct NCR5380_hostdata;
33 static u8 cumanascsi_read(struct NCR5380_hostdata *, unsigned int);
34 static void cumanascsi_write(struct NCR5380_hostdata *, unsigned int, u8);
36 #include "../NCR5380.h"
40 #define L(v) (((v)<<16)|((v) & 0x0000ffff))
41 #define H(v) (((v)>>16)|((v) & 0xffff0000))
43 static inline int cumanascsi_pwrite(struct NCR5380_hostdata *hostdata,
44 unsigned char *addr, int len)
47 u8 __iomem *base = hostdata->io;
48 u8 __iomem *dma = hostdata->pdma_io + 0x2000;
52 writeb(0x02, base + CTRL);
53 laddr = (unsigned long *)addr;
58 status = readb(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, base + CTRL);
82 status = readb(base + STAT);
92 status = readb(base + STAT);
103 writeb(hostdata->ctrl | 0x40, base + CTRL);
110 static inline int cumanascsi_pread(struct NCR5380_hostdata *hostdata,
111 unsigned char *addr, int len)
113 unsigned long *laddr;
114 u8 __iomem *base = hostdata->io;
115 u8 __iomem *dma = hostdata->pdma_io + 0x2000;
119 writeb(0x00, base + CTRL);
120 laddr = (unsigned long *)addr;
124 status = readb(base + STAT);
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);
136 *laddr++ = readw(dma) | (readw(dma) << 16);
142 addr = (unsigned char *)laddr;
143 writeb(0x10, base + CTRL);
148 status = readb(base + STAT);
153 *addr++ = readb(dma);
158 status = readb(base + STAT);
163 *addr++ = readb(dma);
169 writeb(hostdata->ctrl | 0x40, base + CTRL);
176 static int cumanascsi_dma_xfer_len(struct NCR5380_hostdata *hostdata,
177 struct scsi_cmnd *cmd)
179 return cmd->transfersize;
182 static u8 cumanascsi_read(struct NCR5380_hostdata *hostdata,
185 u8 __iomem *base = hostdata->io;
188 writeb(0, base + CTRL);
190 val = readb(base + 0x2100 + (reg << 2));
192 hostdata->ctrl = 0x40;
193 writeb(0x40, base + CTRL);
198 static void cumanascsi_write(struct NCR5380_hostdata *hostdata,
199 unsigned int reg, u8 value)
201 u8 __iomem *base = hostdata->io;
203 writeb(0, base + CTRL);
205 writeb(value, base + 0x2100 + (reg << 2));
207 hostdata->ctrl = 0x40;
208 writeb(0x40, base + CTRL);
211 #include "../NCR5380.c"
213 static struct scsi_host_template cumanascsi_template = {
214 .module = THIS_MODULE,
215 .name = "Cumana 16-bit SCSI",
216 .info = cumanascsi_info,
217 .queuecommand = cumanascsi_queue_command,
218 .eh_abort_handler = NCR5380_abort,
219 .eh_bus_reset_handler = NCR5380_bus_reset,
222 .sg_tablesize = SG_ALL,
224 .use_clustering = DISABLE_CLUSTERING,
225 .proc_name = "CumanaSCSI-1",
226 .cmd_size = NCR5380_CMD_SIZE,
230 static int cumanascsi1_probe(struct expansion_card *ec,
231 const struct ecard_id *id)
233 struct Scsi_Host *host;
236 ret = ecard_request_resources(ec);
240 host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
246 priv(host)->io = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
247 ecard_resource_len(ec, ECARD_RES_IOCSLOW));
248 priv(host)->pdma_io = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
249 ecard_resource_len(ec, ECARD_RES_MEMC));
250 if (!priv(host)->io || !priv(host)->pdma_io) {
257 ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP);
261 NCR5380_maybe_reset_bus(host);
263 priv(host)->ctrl = 0;
264 writeb(0, priv(host)->io + CTRL);
266 ret = request_irq(host->irq, cumanascsi_intr, 0,
267 "CumanaSCSI-1", host);
269 printk("scsi%d: IRQ%d not free: %d\n",
270 host->host_no, host->irq, ret);
274 ret = scsi_add_host(host, &ec->dev);
278 scsi_scan_host(host);
282 free_irq(host->irq, host);
286 iounmap(priv(host)->io);
287 iounmap(priv(host)->pdma_io);
290 ecard_release_resources(ec);
295 static void cumanascsi1_remove(struct expansion_card *ec)
297 struct Scsi_Host *host = ecard_get_drvdata(ec);
298 void __iomem *base = priv(host)->io;
299 void __iomem *dma = priv(host)->pdma_io;
301 ecard_set_drvdata(ec, NULL);
303 scsi_remove_host(host);
304 free_irq(host->irq, host);
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");