blob: a396024a3caeca5d8850c68cc188048167549138 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Oak Generic NCR5380 driver
3 *
4 * Copyright 1995-2002, Russell King
5 */
6
7#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07008#include <linux/ioport.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/blkdev.h>
10#include <linux/init.h>
11
12#include <asm/ecard.h>
13#include <asm/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <scsi/scsi_host.h>
16
Russell King8b801ea2007-07-20 10:38:54 +010017#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
Russell King8b801ea2007-07-20 10:38:54 +010018
Finn Thain54d8fe42016-01-03 16:05:06 +110019#define NCR5380_read(reg) \
20 readb(priv(instance)->base + ((reg) << 2))
21#define NCR5380_write(reg, value) \
22 writeb(value, priv(instance)->base + ((reg) << 2))
23
Finn Thainf825e402016-03-23 21:10:15 +110024#define NCR5380_dma_xfer_len(instance, cmd, phase) (0)
Finn Thain6c4b88c2016-03-23 21:10:17 +110025#define NCR5380_dma_recv_setup oakscsi_pread
26#define NCR5380_dma_send_setup oakscsi_pwrite
Finn Thain8053b0e2016-03-23 21:10:19 +110027#define NCR5380_dma_residual(instance) (0)
Finn Thainff3d4572016-01-03 16:05:25 +110028
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#define NCR5380_queue_command oakscsi_queue_command
Finn Thain8c325132014-11-12 16:11:58 +110030#define NCR5380_info oakscsi_info
Linus Torvalds1da177e2005-04-16 15:20:36 -070031
Russell King8b801ea2007-07-20 10:38:54 +010032#define NCR5380_implementation_fields \
33 void __iomem *base
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include "../NCR5380.h"
36
37#undef START_DMA_INITIATOR_RECEIVE_REG
Russell King8b801ea2007-07-20 10:38:54 +010038#define START_DMA_INITIATOR_RECEIVE_REG (128 + 7)
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
Russell King8b801ea2007-07-20 10:38:54 +010040#define STAT ((128 + 16) << 2)
41#define DATA ((128 + 8) << 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
Finn Thain6c4b88c2016-03-23 21:10:17 +110043static inline int oakscsi_pwrite(struct Scsi_Host *instance,
44 unsigned char *addr, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -070045{
Russell King8b801ea2007-07-20 10:38:54 +010046 void __iomem *base = priv(instance)->base;
47
Linus Torvalds1da177e2005-04-16 15:20:36 -070048printk("writing %p len %d\n",addr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070049
50 while(1)
51 {
52 int status;
Russell King8b801ea2007-07-20 10:38:54 +010053 while (((status = readw(base + STAT)) & 0x100)==0);
Linus Torvalds1da177e2005-04-16 15:20:36 -070054 }
Finn Thain438af512016-03-23 21:10:18 +110055 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056}
57
Finn Thain6c4b88c2016-03-23 21:10:17 +110058static inline int oakscsi_pread(struct Scsi_Host *instance,
59 unsigned char *addr, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -070060{
Russell King8b801ea2007-07-20 10:38:54 +010061 void __iomem *base = priv(instance)->base;
Linus Torvalds1da177e2005-04-16 15:20:36 -070062printk("reading %p len %d\n", addr, len);
63 while(len > 0)
64 {
Russell King8b801ea2007-07-20 10:38:54 +010065 unsigned int status, timeout;
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 unsigned long b;
67
68 timeout = 0x01FFFFFF;
69
Russell King8b801ea2007-07-20 10:38:54 +010070 while (((status = readw(base + STAT)) & 0x100)==0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 {
72 timeout--;
73 if(status & 0x200 || !timeout)
74 {
Russell King8b801ea2007-07-20 10:38:54 +010075 printk("status = %08X\n", status);
Finn Thain438af512016-03-23 21:10:18 +110076 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 }
78 }
Russell King8b801ea2007-07-20 10:38:54 +010079
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 if(len >= 128)
81 {
Russell King8b801ea2007-07-20 10:38:54 +010082 readsw(base + DATA, addr, 128);
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 addr += 128;
84 len -= 128;
85 }
86 else
87 {
Russell King8b801ea2007-07-20 10:38:54 +010088 b = (unsigned long) readw(base + DATA);
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 *addr ++ = b;
90 len -= 1;
91 if(len)
92 *addr ++ = b>>8;
93 len -= 1;
94 }
95 }
96 return 0;
97}
98
Linus Torvalds1da177e2005-04-16 15:20:36 -070099#undef STAT
Russell King8b801ea2007-07-20 10:38:54 +0100100#undef DATA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
102#include "../NCR5380.c"
103
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100104static struct scsi_host_template oakscsi_template = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 .module = THIS_MODULE,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 .name = "Oak 16-bit SCSI",
107 .info = oakscsi_info,
108 .queuecommand = oakscsi_queue_command,
109 .eh_abort_handler = NCR5380_abort,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 .eh_bus_reset_handler = NCR5380_bus_reset,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 .can_queue = 16,
112 .this_id = 7,
113 .sg_tablesize = SG_ALL,
114 .cmd_per_lun = 2,
115 .use_clustering = DISABLE_CLUSTERING,
116 .proc_name = "oakscsi",
Finn Thain32b26a12016-01-03 16:05:58 +1100117 .cmd_size = NCR5380_CMD_SIZE,
Finn Thain0a4e3612016-01-03 16:06:07 +1100118 .max_sectors = 128,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119};
120
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -0800121static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122{
123 struct Scsi_Host *host;
124 int ret = -ENOMEM;
125
Russell King8b801ea2007-07-20 10:38:54 +0100126 ret = ecard_request_resources(ec);
127 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 goto out;
129
Russell King8b801ea2007-07-20 10:38:54 +0100130 host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata));
131 if (!host) {
132 ret = -ENOMEM;
133 goto release;
134 }
135
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) {
139 ret = -ENOMEM;
140 goto unreg;
141 }
142
Finn Thain22f5f102014-11-12 16:11:56 +1100143 host->irq = NO_IRQ;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 host->n_io_port = 255;
145
Finn Thain8053b0e2016-03-23 21:10:19 +1100146 ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP);
Finn Thain0ad0eff2016-01-03 16:05:21 +1100147 if (ret)
148 goto out_unmap;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149
Finn Thainb6488f92016-01-03 16:05:08 +1100150 NCR5380_maybe_reset_bus(host);
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 ret = scsi_add_host(host, &ec->dev);
153 if (ret)
Finn Thain0ad0eff2016-01-03 16:05:21 +1100154 goto out_exit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156 scsi_scan_host(host);
157 goto out;
158
Finn Thain0ad0eff2016-01-03 16:05:21 +1100159 out_exit:
160 NCR5380_exit(host);
Russell King8b801ea2007-07-20 10:38:54 +0100161 out_unmap:
162 iounmap(priv(host)->base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 unreg:
164 scsi_host_put(host);
Russell King8b801ea2007-07-20 10:38:54 +0100165 release:
166 ecard_release_resources(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 out:
168 return ret;
169}
170
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -0800171static void oakscsi_remove(struct expansion_card *ec)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172{
173 struct Scsi_Host *host = ecard_get_drvdata(ec);
174
175 ecard_set_drvdata(ec, NULL);
176 scsi_remove_host(host);
177
178 NCR5380_exit(host);
Russell King8b801ea2007-07-20 10:38:54 +0100179 iounmap(priv(host)->base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 scsi_host_put(host);
Russell King8b801ea2007-07-20 10:38:54 +0100181 ecard_release_resources(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182}
183
184static const struct ecard_id oakscsi_cids[] = {
185 { MANU_OAK, PROD_OAK_SCSI },
186 { 0xffff, 0xffff }
187};
188
189static struct ecard_driver oakscsi_driver = {
190 .probe = oakscsi_probe,
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -0800191 .remove = oakscsi_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 .id_table = oakscsi_cids,
193 .drv = {
194 .name = "oakscsi",
195 },
196};
197
198static int __init oakscsi_init(void)
199{
200 return ecard_register_driver(&oakscsi_driver);
201}
202
203static void __exit oakscsi_exit(void)
204{
205 ecard_remove_driver(&oakscsi_driver);
206}
207
208module_init(oakscsi_init);
209module_exit(oakscsi_exit);
210
211MODULE_AUTHOR("Russell King");
212MODULE_DESCRIPTION("Oak SCSI driver");
213MODULE_LICENSE("GPL");
214