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> | |
9 | #include <linux/sched.h> | |
10 | #include <linux/ioport.h> | |
11 | #include <linux/delay.h> | |
12 | #include <linux/blkdev.h> | |
13 | #include <linux/init.h> | |
14 | ||
15 | #include <asm/ecard.h> | |
16 | #include <asm/io.h> | |
17 | #include <asm/system.h> | |
18 | ||
19 | #include "../scsi.h" | |
20 | #include <scsi/scsi_host.h> | |
21 | ||
22 | #define AUTOSENSE | |
23 | /*#define PSEUDO_DMA*/ | |
24 | ||
25 | #define OAKSCSI_PUBLIC_RELEASE 1 | |
26 | ||
27 | #define NCR5380_read(reg) oakscsi_read(_instance, reg) | |
28 | #define NCR5380_write(reg, value) oakscsi_write(_instance, reg, value) | |
29 | #define NCR5380_intr oakscsi_intr | |
30 | #define NCR5380_queue_command oakscsi_queue_command | |
31 | #define NCR5380_proc_info oakscsi_proc_info | |
32 | ||
33 | #define NCR5380_implementation_fields int port, ctrl | |
34 | #define NCR5380_local_declare() struct Scsi_Host *_instance | |
35 | #define NCR5380_setup(instance) _instance = instance | |
36 | ||
37 | #define BOARD_NORMAL 0 | |
38 | #define BOARD_NCR53C400 1 | |
39 | ||
40 | #include "../NCR5380.h" | |
41 | ||
42 | #undef START_DMA_INITIATOR_RECEIVE_REG | |
43 | #define START_DMA_INITIATOR_RECEIVE_REG (7 + 128) | |
44 | ||
45 | const char * oakscsi_info (struct Scsi_Host *spnt) | |
46 | { | |
47 | return ""; | |
48 | } | |
49 | ||
50 | #define STAT(p) inw(p + 144) | |
51 | extern void inswb(int from, void *to, int len); | |
52 | ||
53 | static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, | |
54 | int len) | |
55 | { | |
56 | int iobase = instance->io_port; | |
57 | printk("writing %p len %d\n",addr, len); | |
58 | if(!len) return -1; | |
59 | ||
60 | while(1) | |
61 | { | |
62 | int status; | |
63 | while(((status = STAT(iobase)) & 0x100)==0); | |
64 | } | |
65 | } | |
66 | ||
67 | static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, | |
68 | int len) | |
69 | { | |
70 | int iobase = instance->io_port; | |
71 | printk("reading %p len %d\n", addr, len); | |
72 | while(len > 0) | |
73 | { | |
74 | int status, timeout; | |
75 | unsigned long b; | |
76 | ||
77 | timeout = 0x01FFFFFF; | |
78 | ||
79 | while(((status = STAT(iobase)) & 0x100)==0) | |
80 | { | |
81 | timeout--; | |
82 | if(status & 0x200 || !timeout) | |
83 | { | |
84 | printk("status = %08X\n",status); | |
85 | return 1; | |
86 | } | |
87 | } | |
88 | if(len >= 128) | |
89 | { | |
90 | inswb(iobase + 136, addr, 128); | |
91 | addr += 128; | |
92 | len -= 128; | |
93 | } | |
94 | else | |
95 | { | |
96 | b = (unsigned long) inw(iobase + 136); | |
97 | *addr ++ = b; | |
98 | len -= 1; | |
99 | if(len) | |
100 | *addr ++ = b>>8; | |
101 | len -= 1; | |
102 | } | |
103 | } | |
104 | return 0; | |
105 | } | |
106 | ||
107 | #define oakscsi_read(instance,reg) (inb((instance)->io_port + (reg))) | |
108 | #define oakscsi_write(instance,reg,val) (outb((val), (instance)->io_port + (reg))) | |
109 | ||
110 | #undef STAT | |
111 | ||
112 | #include "../NCR5380.c" | |
113 | ||
114 | static Scsi_Host_Template oakscsi_template = { | |
115 | .module = THIS_MODULE, | |
116 | .proc_info = oakscsi_proc_info, | |
117 | .name = "Oak 16-bit SCSI", | |
118 | .info = oakscsi_info, | |
119 | .queuecommand = oakscsi_queue_command, | |
120 | .eh_abort_handler = NCR5380_abort, | |
121 | .eh_device_reset_handler= NCR5380_device_reset, | |
122 | .eh_bus_reset_handler = NCR5380_bus_reset, | |
123 | .eh_host_reset_handler = NCR5380_host_reset, | |
124 | .can_queue = 16, | |
125 | .this_id = 7, | |
126 | .sg_tablesize = SG_ALL, | |
127 | .cmd_per_lun = 2, | |
128 | .use_clustering = DISABLE_CLUSTERING, | |
129 | .proc_name = "oakscsi", | |
130 | }; | |
131 | ||
132 | static int __devinit | |
133 | oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) | |
134 | { | |
135 | struct Scsi_Host *host; | |
136 | int ret = -ENOMEM; | |
137 | ||
138 | host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); | |
139 | if (!host) | |
140 | goto out; | |
141 | ||
142 | host->io_port = ecard_address(ec, ECARD_MEMC, 0); | |
143 | host->irq = IRQ_NONE; | |
144 | host->n_io_port = 255; | |
145 | ||
146 | ret = -EBUSY; | |
147 | if (!request_region (host->io_port, host->n_io_port, "Oak SCSI")) | |
148 | goto unreg; | |
149 | ||
150 | NCR5380_init(host, 0); | |
151 | ||
152 | printk("scsi%d: at port 0x%08lx irqs disabled", | |
153 | host->host_no, host->io_port); | |
154 | printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", | |
155 | host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE); | |
156 | printk("\nscsi%d:", host->host_no); | |
157 | NCR5380_print_options(host); | |
158 | printk("\n"); | |
159 | ||
160 | ret = scsi_add_host(host, &ec->dev); | |
161 | if (ret) | |
162 | goto out_release; | |
163 | ||
164 | scsi_scan_host(host); | |
165 | goto out; | |
166 | ||
167 | out_release: | |
168 | release_region(host->io_port, host->n_io_port); | |
169 | unreg: | |
170 | scsi_host_put(host); | |
171 | out: | |
172 | return ret; | |
173 | } | |
174 | ||
175 | static void __devexit oakscsi_remove(struct expansion_card *ec) | |
176 | { | |
177 | struct Scsi_Host *host = ecard_get_drvdata(ec); | |
178 | ||
179 | ecard_set_drvdata(ec, NULL); | |
180 | scsi_remove_host(host); | |
181 | ||
182 | NCR5380_exit(host); | |
183 | release_region(host->io_port, host->n_io_port); | |
184 | scsi_host_put(host); | |
185 | } | |
186 | ||
187 | static const struct ecard_id oakscsi_cids[] = { | |
188 | { MANU_OAK, PROD_OAK_SCSI }, | |
189 | { 0xffff, 0xffff } | |
190 | }; | |
191 | ||
192 | static struct ecard_driver oakscsi_driver = { | |
193 | .probe = oakscsi_probe, | |
194 | .remove = __devexit_p(oakscsi_remove), | |
195 | .id_table = oakscsi_cids, | |
196 | .drv = { | |
197 | .name = "oakscsi", | |
198 | }, | |
199 | }; | |
200 | ||
201 | static int __init oakscsi_init(void) | |
202 | { | |
203 | return ecard_register_driver(&oakscsi_driver); | |
204 | } | |
205 | ||
206 | static void __exit oakscsi_exit(void) | |
207 | { | |
208 | ecard_remove_driver(&oakscsi_driver); | |
209 | } | |
210 | ||
211 | module_init(oakscsi_init); | |
212 | module_exit(oakscsi_exit); | |
213 | ||
214 | MODULE_AUTHOR("Russell King"); | |
215 | MODULE_DESCRIPTION("Oak SCSI driver"); | |
216 | MODULE_LICENSE("GPL"); | |
217 |