Commit | Line | Data |
---|---|---|
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 | 16 | |
1da177e4 LT |
17 | #include <scsi/scsi_host.h> |
18 | ||
1da177e4 | 19 | /*#define PSEUDO_DMA*/ |
ea065f13 | 20 | #define DONT_USE_INTR |
1da177e4 | 21 | |
8b801ead RK |
22 | #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) |
23 | #define NCR5380_local_declare() void __iomem *_base | |
24 | #define NCR5380_setup(host) _base = priv(host)->base | |
25 | ||
26 | #define NCR5380_read(reg) readb(_base + ((reg) << 2)) | |
27 | #define NCR5380_write(reg, value) writeb(value, _base + ((reg) << 2)) | |
1da177e4 | 28 | #define NCR5380_queue_command oakscsi_queue_command |
8c32513b | 29 | #define NCR5380_info oakscsi_info |
dd7ab71b | 30 | #define NCR5380_show_info oakscsi_show_info |
1da177e4 | 31 | |
8b801ead RK |
32 | #define NCR5380_implementation_fields \ |
33 | void __iomem *base | |
1da177e4 | 34 | |
1da177e4 LT |
35 | #include "../NCR5380.h" |
36 | ||
37 | #undef START_DMA_INITIATOR_RECEIVE_REG | |
8b801ead | 38 | #define START_DMA_INITIATOR_RECEIVE_REG (128 + 7) |
1da177e4 | 39 | |
8b801ead RK |
40 | #define STAT ((128 + 16) << 2) |
41 | #define DATA ((128 + 8) << 2) | |
1da177e4 LT |
42 | |
43 | static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, | |
44 | int len) | |
45 | { | |
8b801ead RK |
46 | void __iomem *base = priv(instance)->base; |
47 | ||
1da177e4 LT |
48 | printk("writing %p len %d\n",addr, len); |
49 | if(!len) return -1; | |
50 | ||
51 | while(1) | |
52 | { | |
53 | int status; | |
8b801ead | 54 | while (((status = readw(base + STAT)) & 0x100)==0); |
1da177e4 LT |
55 | } |
56 | } | |
57 | ||
58 | static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, | |
59 | int len) | |
60 | { | |
8b801ead | 61 | void __iomem *base = priv(instance)->base; |
1da177e4 LT |
62 | printk("reading %p len %d\n", addr, len); |
63 | while(len > 0) | |
64 | { | |
8b801ead | 65 | unsigned int status, timeout; |
1da177e4 LT |
66 | unsigned long b; |
67 | ||
68 | timeout = 0x01FFFFFF; | |
69 | ||
8b801ead | 70 | while (((status = readw(base + STAT)) & 0x100)==0) |
1da177e4 LT |
71 | { |
72 | timeout--; | |
73 | if(status & 0x200 || !timeout) | |
74 | { | |
8b801ead | 75 | printk("status = %08X\n", status); |
1da177e4 LT |
76 | return 1; |
77 | } | |
78 | } | |
8b801ead | 79 | |
1da177e4 LT |
80 | if(len >= 128) |
81 | { | |
8b801ead | 82 | readsw(base + DATA, addr, 128); |
1da177e4 LT |
83 | addr += 128; |
84 | len -= 128; | |
85 | } | |
86 | else | |
87 | { | |
8b801ead | 88 | b = (unsigned long) readw(base + DATA); |
1da177e4 LT |
89 | *addr ++ = b; |
90 | len -= 1; | |
91 | if(len) | |
92 | *addr ++ = b>>8; | |
93 | len -= 1; | |
94 | } | |
95 | } | |
96 | return 0; | |
97 | } | |
98 | ||
1da177e4 | 99 | #undef STAT |
8b801ead | 100 | #undef DATA |
1da177e4 LT |
101 | |
102 | #include "../NCR5380.c" | |
103 | ||
d0be4a7d | 104 | static struct scsi_host_template oakscsi_template = { |
1da177e4 | 105 | .module = THIS_MODULE, |
dd7ab71b | 106 | .show_info = oakscsi_show_info, |
1da177e4 LT |
107 | .name = "Oak 16-bit SCSI", |
108 | .info = oakscsi_info, | |
109 | .queuecommand = oakscsi_queue_command, | |
110 | .eh_abort_handler = NCR5380_abort, | |
1da177e4 | 111 | .eh_bus_reset_handler = NCR5380_bus_reset, |
1da177e4 LT |
112 | .can_queue = 16, |
113 | .this_id = 7, | |
114 | .sg_tablesize = SG_ALL, | |
115 | .cmd_per_lun = 2, | |
116 | .use_clustering = DISABLE_CLUSTERING, | |
117 | .proc_name = "oakscsi", | |
118 | }; | |
119 | ||
6f039790 | 120 | static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) |
1da177e4 LT |
121 | { |
122 | struct Scsi_Host *host; | |
123 | int ret = -ENOMEM; | |
124 | ||
8b801ead RK |
125 | ret = ecard_request_resources(ec); |
126 | if (ret) | |
1da177e4 LT |
127 | goto out; |
128 | ||
8b801ead RK |
129 | host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); |
130 | if (!host) { | |
131 | ret = -ENOMEM; | |
132 | goto release; | |
133 | } | |
134 | ||
135 | priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), | |
136 | ecard_resource_len(ec, ECARD_RES_MEMC)); | |
137 | if (!priv(host)->base) { | |
138 | ret = -ENOMEM; | |
139 | goto unreg; | |
140 | } | |
141 | ||
22f5f10d | 142 | host->irq = NO_IRQ; |
1da177e4 LT |
143 | host->n_io_port = 255; |
144 | ||
1da177e4 LT |
145 | NCR5380_init(host, 0); |
146 | ||
1da177e4 LT |
147 | ret = scsi_add_host(host, &ec->dev); |
148 | if (ret) | |
8b801ead | 149 | goto out_unmap; |
1da177e4 LT |
150 | |
151 | scsi_scan_host(host); | |
152 | goto out; | |
153 | ||
8b801ead RK |
154 | out_unmap: |
155 | iounmap(priv(host)->base); | |
1da177e4 LT |
156 | unreg: |
157 | scsi_host_put(host); | |
8b801ead RK |
158 | release: |
159 | ecard_release_resources(ec); | |
1da177e4 LT |
160 | out: |
161 | return ret; | |
162 | } | |
163 | ||
6f039790 | 164 | static void oakscsi_remove(struct expansion_card *ec) |
1da177e4 LT |
165 | { |
166 | struct Scsi_Host *host = ecard_get_drvdata(ec); | |
167 | ||
168 | ecard_set_drvdata(ec, NULL); | |
169 | scsi_remove_host(host); | |
170 | ||
171 | NCR5380_exit(host); | |
8b801ead | 172 | iounmap(priv(host)->base); |
1da177e4 | 173 | scsi_host_put(host); |
8b801ead | 174 | ecard_release_resources(ec); |
1da177e4 LT |
175 | } |
176 | ||
177 | static const struct ecard_id oakscsi_cids[] = { | |
178 | { MANU_OAK, PROD_OAK_SCSI }, | |
179 | { 0xffff, 0xffff } | |
180 | }; | |
181 | ||
182 | static struct ecard_driver oakscsi_driver = { | |
183 | .probe = oakscsi_probe, | |
6f039790 | 184 | .remove = oakscsi_remove, |
1da177e4 LT |
185 | .id_table = oakscsi_cids, |
186 | .drv = { | |
187 | .name = "oakscsi", | |
188 | }, | |
189 | }; | |
190 | ||
191 | static int __init oakscsi_init(void) | |
192 | { | |
193 | return ecard_register_driver(&oakscsi_driver); | |
194 | } | |
195 | ||
196 | static void __exit oakscsi_exit(void) | |
197 | { | |
198 | ecard_remove_driver(&oakscsi_driver); | |
199 | } | |
200 | ||
201 | module_init(oakscsi_init); | |
202 | module_exit(oakscsi_exit); | |
203 | ||
204 | MODULE_AUTHOR("Russell King"); | |
205 | MODULE_DESCRIPTION("Oak SCSI driver"); | |
206 | MODULE_LICENSE("GPL"); | |
207 |