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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Oak Generic NCR5380 driver | |
3 | * | |
4 | * Copyright 1995-2002, Russell King | |
5 | */ | |
6 | ||
7 | #include <linux/module.h> | |
8 | #include <linux/signal.h> | |
1da177e4 LT |
9 | #include <linux/ioport.h> |
10 | #include <linux/delay.h> | |
11 | #include <linux/blkdev.h> | |
12 | #include <linux/init.h> | |
13 | ||
14 | #include <asm/ecard.h> | |
15 | #include <asm/io.h> | |
1da177e4 LT |
16 | |
17 | #include "../scsi.h" | |
18 | #include <scsi/scsi_host.h> | |
19 | ||
20 | #define AUTOSENSE | |
21 | /*#define PSEUDO_DMA*/ | |
22 | ||
23 | #define OAKSCSI_PUBLIC_RELEASE 1 | |
ea065f13 | 24 | #define DONT_USE_INTR |
1da177e4 | 25 | |
8b801ead RK |
26 | #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) |
27 | #define NCR5380_local_declare() void __iomem *_base | |
28 | #define NCR5380_setup(host) _base = priv(host)->base | |
29 | ||
30 | #define NCR5380_read(reg) readb(_base + ((reg) << 2)) | |
31 | #define NCR5380_write(reg, value) writeb(value, _base + ((reg) << 2)) | |
1da177e4 LT |
32 | #define NCR5380_intr oakscsi_intr |
33 | #define NCR5380_queue_command oakscsi_queue_command | |
dd7ab71b AV |
34 | #define NCR5380_show_info oakscsi_show_info |
35 | #define NCR5380_write_info oakscsi_write_info | |
1da177e4 | 36 | |
8b801ead RK |
37 | #define NCR5380_implementation_fields \ |
38 | void __iomem *base | |
1da177e4 LT |
39 | |
40 | #define BOARD_NORMAL 0 | |
41 | #define BOARD_NCR53C400 1 | |
42 | ||
43 | #include "../NCR5380.h" | |
44 | ||
45 | #undef START_DMA_INITIATOR_RECEIVE_REG | |
8b801ead | 46 | #define START_DMA_INITIATOR_RECEIVE_REG (128 + 7) |
1da177e4 LT |
47 | |
48 | const char * oakscsi_info (struct Scsi_Host *spnt) | |
49 | { | |
50 | return ""; | |
51 | } | |
52 | ||
8b801ead RK |
53 | #define STAT ((128 + 16) << 2) |
54 | #define DATA ((128 + 8) << 2) | |
1da177e4 LT |
55 | |
56 | static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, | |
57 | int len) | |
58 | { | |
8b801ead RK |
59 | void __iomem *base = priv(instance)->base; |
60 | ||
1da177e4 LT |
61 | printk("writing %p len %d\n",addr, len); |
62 | if(!len) return -1; | |
63 | ||
64 | while(1) | |
65 | { | |
66 | int status; | |
8b801ead | 67 | while (((status = readw(base + STAT)) & 0x100)==0); |
1da177e4 LT |
68 | } |
69 | } | |
70 | ||
71 | static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, | |
72 | int len) | |
73 | { | |
8b801ead | 74 | void __iomem *base = priv(instance)->base; |
1da177e4 LT |
75 | printk("reading %p len %d\n", addr, len); |
76 | while(len > 0) | |
77 | { | |
8b801ead | 78 | unsigned int status, timeout; |
1da177e4 LT |
79 | unsigned long b; |
80 | ||
81 | timeout = 0x01FFFFFF; | |
82 | ||
8b801ead | 83 | while (((status = readw(base + STAT)) & 0x100)==0) |
1da177e4 LT |
84 | { |
85 | timeout--; | |
86 | if(status & 0x200 || !timeout) | |
87 | { | |
8b801ead | 88 | printk("status = %08X\n", status); |
1da177e4 LT |
89 | return 1; |
90 | } | |
91 | } | |
8b801ead | 92 | |
1da177e4 LT |
93 | if(len >= 128) |
94 | { | |
8b801ead | 95 | readsw(base + DATA, addr, 128); |
1da177e4 LT |
96 | addr += 128; |
97 | len -= 128; | |
98 | } | |
99 | else | |
100 | { | |
8b801ead | 101 | b = (unsigned long) readw(base + DATA); |
1da177e4 LT |
102 | *addr ++ = b; |
103 | len -= 1; | |
104 | if(len) | |
105 | *addr ++ = b>>8; | |
106 | len -= 1; | |
107 | } | |
108 | } | |
109 | return 0; | |
110 | } | |
111 | ||
1da177e4 | 112 | #undef STAT |
8b801ead | 113 | #undef DATA |
1da177e4 LT |
114 | |
115 | #include "../NCR5380.c" | |
116 | ||
d0be4a7d | 117 | static struct scsi_host_template oakscsi_template = { |
1da177e4 | 118 | .module = THIS_MODULE, |
dd7ab71b AV |
119 | .show_info = oakscsi_show_info, |
120 | .write_info = oakscsi_write_info, | |
1da177e4 LT |
121 | .name = "Oak 16-bit SCSI", |
122 | .info = oakscsi_info, | |
123 | .queuecommand = oakscsi_queue_command, | |
124 | .eh_abort_handler = NCR5380_abort, | |
1da177e4 | 125 | .eh_bus_reset_handler = NCR5380_bus_reset, |
1da177e4 LT |
126 | .can_queue = 16, |
127 | .this_id = 7, | |
128 | .sg_tablesize = SG_ALL, | |
129 | .cmd_per_lun = 2, | |
130 | .use_clustering = DISABLE_CLUSTERING, | |
131 | .proc_name = "oakscsi", | |
132 | }; | |
133 | ||
6f039790 | 134 | static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) |
1da177e4 LT |
135 | { |
136 | struct Scsi_Host *host; | |
137 | int ret = -ENOMEM; | |
138 | ||
8b801ead RK |
139 | ret = ecard_request_resources(ec); |
140 | if (ret) | |
1da177e4 LT |
141 | goto out; |
142 | ||
8b801ead RK |
143 | host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); |
144 | if (!host) { | |
145 | ret = -ENOMEM; | |
146 | goto release; | |
147 | } | |
148 | ||
149 | priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), | |
150 | ecard_resource_len(ec, ECARD_RES_MEMC)); | |
151 | if (!priv(host)->base) { | |
152 | ret = -ENOMEM; | |
153 | goto unreg; | |
154 | } | |
155 | ||
1da177e4 LT |
156 | host->irq = IRQ_NONE; |
157 | host->n_io_port = 255; | |
158 | ||
1da177e4 LT |
159 | NCR5380_init(host, 0); |
160 | ||
161 | printk("scsi%d: at port 0x%08lx irqs disabled", | |
162 | host->host_no, host->io_port); | |
163 | printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", | |
164 | host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE); | |
165 | printk("\nscsi%d:", host->host_no); | |
166 | NCR5380_print_options(host); | |
167 | printk("\n"); | |
168 | ||
169 | ret = scsi_add_host(host, &ec->dev); | |
170 | if (ret) | |
8b801ead | 171 | goto out_unmap; |
1da177e4 LT |
172 | |
173 | scsi_scan_host(host); | |
174 | goto out; | |
175 | ||
8b801ead RK |
176 | out_unmap: |
177 | iounmap(priv(host)->base); | |
1da177e4 LT |
178 | unreg: |
179 | scsi_host_put(host); | |
8b801ead RK |
180 | release: |
181 | ecard_release_resources(ec); | |
1da177e4 LT |
182 | out: |
183 | return ret; | |
184 | } | |
185 | ||
6f039790 | 186 | static void oakscsi_remove(struct expansion_card *ec) |
1da177e4 LT |
187 | { |
188 | struct Scsi_Host *host = ecard_get_drvdata(ec); | |
189 | ||
190 | ecard_set_drvdata(ec, NULL); | |
191 | scsi_remove_host(host); | |
192 | ||
193 | NCR5380_exit(host); | |
8b801ead | 194 | iounmap(priv(host)->base); |
1da177e4 | 195 | scsi_host_put(host); |
8b801ead | 196 | ecard_release_resources(ec); |
1da177e4 LT |
197 | } |
198 | ||
199 | static const struct ecard_id oakscsi_cids[] = { | |
200 | { MANU_OAK, PROD_OAK_SCSI }, | |
201 | { 0xffff, 0xffff } | |
202 | }; | |
203 | ||
204 | static struct ecard_driver oakscsi_driver = { | |
205 | .probe = oakscsi_probe, | |
6f039790 | 206 | .remove = oakscsi_remove, |
1da177e4 LT |
207 | .id_table = oakscsi_cids, |
208 | .drv = { | |
209 | .name = "oakscsi", | |
210 | }, | |
211 | }; | |
212 | ||
213 | static int __init oakscsi_init(void) | |
214 | { | |
215 | return ecard_register_driver(&oakscsi_driver); | |
216 | } | |
217 | ||
218 | static void __exit oakscsi_exit(void) | |
219 | { | |
220 | ecard_remove_driver(&oakscsi_driver); | |
221 | } | |
222 | ||
223 | module_init(oakscsi_init); | |
224 | module_exit(oakscsi_exit); | |
225 | ||
226 | MODULE_AUTHOR("Russell King"); | |
227 | MODULE_DESCRIPTION("Oak SCSI driver"); | |
228 | MODULE_LICENSE("GPL"); | |
229 |