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> | |
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 | ||
ea065f13 | 17 | #define DONT_USE_INTR |
1da177e4 | 18 | |
8b801ead | 19 | #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) |
8b801ead | 20 | |
54d8fe44 FT |
21 | #define NCR5380_read(reg) \ |
22 | readb(priv(instance)->base + ((reg) << 2)) | |
23 | #define NCR5380_write(reg, value) \ | |
24 | writeb(value, priv(instance)->base + ((reg) << 2)) | |
25 | ||
f825e40b | 26 | #define NCR5380_dma_xfer_len(instance, cmd, phase) (0) |
6c4b88ca FT |
27 | #define NCR5380_dma_recv_setup oakscsi_pread |
28 | #define NCR5380_dma_send_setup oakscsi_pwrite | |
8053b0ee | 29 | #define NCR5380_dma_residual(instance) (0) |
ff3d4578 | 30 | |
1da177e4 | 31 | #define NCR5380_queue_command oakscsi_queue_command |
8c32513b | 32 | #define NCR5380_info oakscsi_info |
1da177e4 | 33 | |
8b801ead RK |
34 | #define NCR5380_implementation_fields \ |
35 | void __iomem *base | |
1da177e4 | 36 | |
1da177e4 LT |
37 | #include "../NCR5380.h" |
38 | ||
39 | #undef START_DMA_INITIATOR_RECEIVE_REG | |
8b801ead | 40 | #define START_DMA_INITIATOR_RECEIVE_REG (128 + 7) |
1da177e4 | 41 | |
8b801ead RK |
42 | #define STAT ((128 + 16) << 2) |
43 | #define DATA ((128 + 8) << 2) | |
1da177e4 | 44 | |
6c4b88ca FT |
45 | static inline int oakscsi_pwrite(struct Scsi_Host *instance, |
46 | unsigned char *addr, int len) | |
1da177e4 | 47 | { |
8b801ead RK |
48 | void __iomem *base = priv(instance)->base; |
49 | ||
1da177e4 | 50 | printk("writing %p len %d\n",addr, len); |
1da177e4 LT |
51 | |
52 | while(1) | |
53 | { | |
54 | int status; | |
8b801ead | 55 | while (((status = readw(base + STAT)) & 0x100)==0); |
1da177e4 | 56 | } |
438af51c | 57 | return 0; |
1da177e4 LT |
58 | } |
59 | ||
6c4b88ca FT |
60 | static inline int oakscsi_pread(struct Scsi_Host *instance, |
61 | unsigned char *addr, int len) | |
1da177e4 | 62 | { |
8b801ead | 63 | void __iomem *base = priv(instance)->base; |
1da177e4 LT |
64 | printk("reading %p len %d\n", addr, len); |
65 | while(len > 0) | |
66 | { | |
8b801ead | 67 | unsigned int status, timeout; |
1da177e4 LT |
68 | unsigned long b; |
69 | ||
70 | timeout = 0x01FFFFFF; | |
71 | ||
8b801ead | 72 | while (((status = readw(base + STAT)) & 0x100)==0) |
1da177e4 LT |
73 | { |
74 | timeout--; | |
75 | if(status & 0x200 || !timeout) | |
76 | { | |
8b801ead | 77 | printk("status = %08X\n", status); |
438af51c | 78 | return -1; |
1da177e4 LT |
79 | } |
80 | } | |
8b801ead | 81 | |
1da177e4 LT |
82 | if(len >= 128) |
83 | { | |
8b801ead | 84 | readsw(base + DATA, addr, 128); |
1da177e4 LT |
85 | addr += 128; |
86 | len -= 128; | |
87 | } | |
88 | else | |
89 | { | |
8b801ead | 90 | b = (unsigned long) readw(base + DATA); |
1da177e4 LT |
91 | *addr ++ = b; |
92 | len -= 1; | |
93 | if(len) | |
94 | *addr ++ = b>>8; | |
95 | len -= 1; | |
96 | } | |
97 | } | |
98 | return 0; | |
99 | } | |
100 | ||
1da177e4 | 101 | #undef STAT |
8b801ead | 102 | #undef DATA |
1da177e4 LT |
103 | |
104 | #include "../NCR5380.c" | |
105 | ||
d0be4a7d | 106 | static struct scsi_host_template oakscsi_template = { |
1da177e4 | 107 | .module = THIS_MODULE, |
1da177e4 LT |
108 | .name = "Oak 16-bit SCSI", |
109 | .info = oakscsi_info, | |
110 | .queuecommand = oakscsi_queue_command, | |
111 | .eh_abort_handler = NCR5380_abort, | |
1da177e4 | 112 | .eh_bus_reset_handler = NCR5380_bus_reset, |
1da177e4 LT |
113 | .can_queue = 16, |
114 | .this_id = 7, | |
115 | .sg_tablesize = SG_ALL, | |
116 | .cmd_per_lun = 2, | |
117 | .use_clustering = DISABLE_CLUSTERING, | |
118 | .proc_name = "oakscsi", | |
32b26a10 | 119 | .cmd_size = NCR5380_CMD_SIZE, |
0a4e3612 | 120 | .max_sectors = 128, |
1da177e4 LT |
121 | }; |
122 | ||
6f039790 | 123 | static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) |
1da177e4 LT |
124 | { |
125 | struct Scsi_Host *host; | |
126 | int ret = -ENOMEM; | |
127 | ||
8b801ead RK |
128 | ret = ecard_request_resources(ec); |
129 | if (ret) | |
1da177e4 LT |
130 | goto out; |
131 | ||
8b801ead RK |
132 | host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); |
133 | if (!host) { | |
134 | ret = -ENOMEM; | |
135 | goto release; | |
136 | } | |
137 | ||
138 | priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), | |
139 | ecard_resource_len(ec, ECARD_RES_MEMC)); | |
140 | if (!priv(host)->base) { | |
141 | ret = -ENOMEM; | |
142 | goto unreg; | |
143 | } | |
144 | ||
22f5f10d | 145 | host->irq = NO_IRQ; |
1da177e4 LT |
146 | host->n_io_port = 255; |
147 | ||
8053b0ee | 148 | ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP); |
0ad0eff9 FT |
149 | if (ret) |
150 | goto out_unmap; | |
1da177e4 | 151 | |
b6488f97 FT |
152 | NCR5380_maybe_reset_bus(host); |
153 | ||
1da177e4 LT |
154 | ret = scsi_add_host(host, &ec->dev); |
155 | if (ret) | |
0ad0eff9 | 156 | goto out_exit; |
1da177e4 LT |
157 | |
158 | scsi_scan_host(host); | |
159 | goto out; | |
160 | ||
0ad0eff9 FT |
161 | out_exit: |
162 | NCR5380_exit(host); | |
8b801ead RK |
163 | out_unmap: |
164 | iounmap(priv(host)->base); | |
1da177e4 LT |
165 | unreg: |
166 | scsi_host_put(host); | |
8b801ead RK |
167 | release: |
168 | ecard_release_resources(ec); | |
1da177e4 LT |
169 | out: |
170 | return ret; | |
171 | } | |
172 | ||
6f039790 | 173 | static void oakscsi_remove(struct expansion_card *ec) |
1da177e4 LT |
174 | { |
175 | struct Scsi_Host *host = ecard_get_drvdata(ec); | |
176 | ||
177 | ecard_set_drvdata(ec, NULL); | |
178 | scsi_remove_host(host); | |
179 | ||
180 | NCR5380_exit(host); | |
8b801ead | 181 | iounmap(priv(host)->base); |
1da177e4 | 182 | scsi_host_put(host); |
8b801ead | 183 | ecard_release_resources(ec); |
1da177e4 LT |
184 | } |
185 | ||
186 | static const struct ecard_id oakscsi_cids[] = { | |
187 | { MANU_OAK, PROD_OAK_SCSI }, | |
188 | { 0xffff, 0xffff } | |
189 | }; | |
190 | ||
191 | static struct ecard_driver oakscsi_driver = { | |
192 | .probe = oakscsi_probe, | |
6f039790 | 193 | .remove = oakscsi_remove, |
1da177e4 LT |
194 | .id_table = oakscsi_cids, |
195 | .drv = { | |
196 | .name = "oakscsi", | |
197 | }, | |
198 | }; | |
199 | ||
200 | static int __init oakscsi_init(void) | |
201 | { | |
202 | return ecard_register_driver(&oakscsi_driver); | |
203 | } | |
204 | ||
205 | static void __exit oakscsi_exit(void) | |
206 | { | |
207 | ecard_remove_driver(&oakscsi_driver); | |
208 | } | |
209 | ||
210 | module_init(oakscsi_init); | |
211 | module_exit(oakscsi_exit); | |
212 | ||
213 | MODULE_AUTHOR("Russell King"); | |
214 | MODULE_DESCRIPTION("Oak SCSI driver"); | |
215 | MODULE_LICENSE("GPL"); | |
216 |