2 * Oak Generic NCR5380 driver
4 * Copyright 1995-2002, Russell King
7 #include <linux/module.h>
8 #include <linux/ioport.h>
9 #include <linux/blkdev.h>
10 #include <linux/init.h>
12 #include <asm/ecard.h>
15 #include <scsi/scsi_host.h>
17 /*#define PSEUDO_DMA*/
20 #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
22 #define NCR5380_read(reg) \
23 readb(priv(instance)->base + ((reg) << 2))
24 #define NCR5380_write(reg, value) \
25 writeb(value, priv(instance)->base + ((reg) << 2))
27 #define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
29 #define NCR5380_queue_command oakscsi_queue_command
30 #define NCR5380_info oakscsi_info
32 #define NCR5380_implementation_fields \
35 #include "../NCR5380.h"
37 #undef START_DMA_INITIATOR_RECEIVE_REG
38 #define START_DMA_INITIATOR_RECEIVE_REG (128 + 7)
40 #define STAT ((128 + 16) << 2)
41 #define DATA ((128 + 8) << 2)
43 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr,
46 void __iomem *base = priv(instance)->base;
48 printk("writing %p len %d\n",addr, len);
54 while (((status = readw(base + STAT)) & 0x100)==0);
58 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr,
61 void __iomem *base = priv(instance)->base;
62 printk("reading %p len %d\n", addr, len);
65 unsigned int status, timeout;
70 while (((status = readw(base + STAT)) & 0x100)==0)
73 if(status & 0x200 || !timeout)
75 printk("status = %08X\n", status);
82 readsw(base + DATA, addr, 128);
88 b = (unsigned long) readw(base + DATA);
102 #include "../NCR5380.c"
104 static struct scsi_host_template oakscsi_template = {
105 .module = THIS_MODULE,
106 .name = "Oak 16-bit SCSI",
107 .info = oakscsi_info,
108 .queuecommand = oakscsi_queue_command,
109 .eh_abort_handler = NCR5380_abort,
110 .eh_bus_reset_handler = NCR5380_bus_reset,
113 .sg_tablesize = SG_ALL,
115 .use_clustering = DISABLE_CLUSTERING,
116 .proc_name = "oakscsi",
117 .cmd_size = NCR5380_CMD_SIZE,
121 static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
123 struct Scsi_Host *host;
126 ret = ecard_request_resources(ec);
130 host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata));
136 priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
137 ecard_resource_len(ec, ECARD_RES_MEMC));
138 if (!priv(host)->base) {
144 host->n_io_port = 255;
146 ret = NCR5380_init(host, FLAG_DMA_FIXUP);
150 NCR5380_maybe_reset_bus(host);
152 ret = scsi_add_host(host, &ec->dev);
156 scsi_scan_host(host);
162 iounmap(priv(host)->base);
166 ecard_release_resources(ec);
171 static void oakscsi_remove(struct expansion_card *ec)
173 struct Scsi_Host *host = ecard_get_drvdata(ec);
175 ecard_set_drvdata(ec, NULL);
176 scsi_remove_host(host);
179 iounmap(priv(host)->base);
181 ecard_release_resources(ec);
184 static const struct ecard_id oakscsi_cids[] = {
185 { MANU_OAK, PROD_OAK_SCSI },
189 static struct ecard_driver oakscsi_driver = {
190 .probe = oakscsi_probe,
191 .remove = oakscsi_remove,
192 .id_table = oakscsi_cids,
198 static int __init oakscsi_init(void)
200 return ecard_register_driver(&oakscsi_driver);
203 static void __exit oakscsi_exit(void)
205 ecard_remove_driver(&oakscsi_driver);
208 module_init(oakscsi_init);
209 module_exit(oakscsi_exit);
211 MODULE_AUTHOR("Russell King");
212 MODULE_DESCRIPTION("Oak SCSI driver");
213 MODULE_LICENSE("GPL");