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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> | |
1da177e4 | 8 | #include <linux/ioport.h> |
1da177e4 LT |
9 | #include <linux/blkdev.h> |
10 | #include <linux/init.h> | |
11 | ||
12 | #include <asm/ecard.h> | |
13 | #include <asm/io.h> | |
1da177e4 | 14 | |
1da177e4 LT |
15 | #include <scsi/scsi_host.h> |
16 | ||
8b801ead | 17 | #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) |
8b801ead | 18 | |
54d8fe44 FT |
19 | #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 | ||
f825e40b | 24 | #define NCR5380_dma_xfer_len(instance, cmd, phase) (0) |
6c4b88ca FT |
25 | #define NCR5380_dma_recv_setup oakscsi_pread |
26 | #define NCR5380_dma_send_setup oakscsi_pwrite | |
8053b0ee | 27 | #define NCR5380_dma_residual(instance) (0) |
ff3d4578 | 28 | |
1da177e4 | 29 | #define NCR5380_queue_command oakscsi_queue_command |
8c32513b | 30 | #define NCR5380_info oakscsi_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 | 42 | |
6c4b88ca FT |
43 | static inline int oakscsi_pwrite(struct Scsi_Host *instance, |
44 | unsigned char *addr, int len) | |
1da177e4 | 45 | { |
8b801ead RK |
46 | void __iomem *base = priv(instance)->base; |
47 | ||
1da177e4 | 48 | printk("writing %p len %d\n",addr, len); |
1da177e4 LT |
49 | |
50 | while(1) | |
51 | { | |
52 | int status; | |
8b801ead | 53 | while (((status = readw(base + STAT)) & 0x100)==0); |
1da177e4 | 54 | } |
438af51c | 55 | return 0; |
1da177e4 LT |
56 | } |
57 | ||
6c4b88ca FT |
58 | static inline int oakscsi_pread(struct Scsi_Host *instance, |
59 | unsigned char *addr, int len) | |
1da177e4 | 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); |
438af51c | 76 | return -1; |
1da177e4 LT |
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, |
1da177e4 LT |
106 | .name = "Oak 16-bit SCSI", |
107 | .info = oakscsi_info, | |
108 | .queuecommand = oakscsi_queue_command, | |
109 | .eh_abort_handler = NCR5380_abort, | |
1da177e4 | 110 | .eh_bus_reset_handler = NCR5380_bus_reset, |
1da177e4 LT |
111 | .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", | |
32b26a10 | 117 | .cmd_size = NCR5380_CMD_SIZE, |
0a4e3612 | 118 | .max_sectors = 128, |
1da177e4 LT |
119 | }; |
120 | ||
6f039790 | 121 | static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) |
1da177e4 LT |
122 | { |
123 | struct Scsi_Host *host; | |
124 | int ret = -ENOMEM; | |
125 | ||
8b801ead RK |
126 | ret = ecard_request_resources(ec); |
127 | if (ret) | |
1da177e4 LT |
128 | goto out; |
129 | ||
8b801ead RK |
130 | 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 | ||
22f5f10d | 143 | host->irq = NO_IRQ; |
1da177e4 LT |
144 | host->n_io_port = 255; |
145 | ||
8053b0ee | 146 | ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP); |
0ad0eff9 FT |
147 | if (ret) |
148 | goto out_unmap; | |
1da177e4 | 149 | |
b6488f97 FT |
150 | NCR5380_maybe_reset_bus(host); |
151 | ||
1da177e4 LT |
152 | ret = scsi_add_host(host, &ec->dev); |
153 | if (ret) | |
0ad0eff9 | 154 | goto out_exit; |
1da177e4 LT |
155 | |
156 | scsi_scan_host(host); | |
157 | goto out; | |
158 | ||
0ad0eff9 FT |
159 | out_exit: |
160 | NCR5380_exit(host); | |
8b801ead RK |
161 | out_unmap: |
162 | iounmap(priv(host)->base); | |
1da177e4 LT |
163 | unreg: |
164 | scsi_host_put(host); | |
8b801ead RK |
165 | release: |
166 | ecard_release_resources(ec); | |
1da177e4 LT |
167 | out: |
168 | return ret; | |
169 | } | |
170 | ||
6f039790 | 171 | static void oakscsi_remove(struct expansion_card *ec) |
1da177e4 LT |
172 | { |
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); | |
8b801ead | 179 | iounmap(priv(host)->base); |
1da177e4 | 180 | scsi_host_put(host); |
8b801ead | 181 | ecard_release_resources(ec); |
1da177e4 LT |
182 | } |
183 | ||
184 | static const struct ecard_id oakscsi_cids[] = { | |
185 | { MANU_OAK, PROD_OAK_SCSI }, | |
186 | { 0xffff, 0xffff } | |
187 | }; | |
188 | ||
189 | static struct ecard_driver oakscsi_driver = { | |
190 | .probe = oakscsi_probe, | |
6f039790 | 191 | .remove = oakscsi_remove, |
1da177e4 LT |
192 | .id_table = oakscsi_cids, |
193 | .drv = { | |
194 | .name = "oakscsi", | |
195 | }, | |
196 | }; | |
197 | ||
198 | static int __init oakscsi_init(void) | |
199 | { | |
200 | return ecard_register_driver(&oakscsi_driver); | |
201 | } | |
202 | ||
203 | static void __exit oakscsi_exit(void) | |
204 | { | |
205 | ecard_remove_driver(&oakscsi_driver); | |
206 | } | |
207 | ||
208 | module_init(oakscsi_init); | |
209 | module_exit(oakscsi_exit); | |
210 | ||
211 | MODULE_AUTHOR("Russell King"); | |
212 | MODULE_DESCRIPTION("Oak SCSI driver"); | |
213 | MODULE_LICENSE("GPL"); | |
214 |