Commit | Line | Data |
---|---|---|
09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * Oak Generic NCR5380 driver | |
4 | * | |
5 | * Copyright 1995-2002, Russell King | |
6 | */ | |
7 | ||
8 | #include <linux/module.h> | |
1da177e4 | 9 | #include <linux/ioport.h> |
1da177e4 LT |
10 | #include <linux/blkdev.h> |
11 | #include <linux/init.h> | |
12 | ||
13 | #include <asm/ecard.h> | |
14 | #include <asm/io.h> | |
1da177e4 | 15 | |
1da177e4 LT |
16 | #include <scsi/scsi_host.h> |
17 | ||
8b801ead | 18 | #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) |
8b801ead | 19 | |
61e1ce58 FT |
20 | #define NCR5380_read(reg) readb(hostdata->io + ((reg) << 2)) |
21 | #define NCR5380_write(reg, value) writeb(value, hostdata->io + ((reg) << 2)) | |
54d8fe44 | 22 | |
4a98f896 | 23 | #define NCR5380_dma_xfer_len NCR5380_dma_xfer_none |
6c4b88ca FT |
24 | #define NCR5380_dma_recv_setup oakscsi_pread |
25 | #define NCR5380_dma_send_setup oakscsi_pwrite | |
4a98f896 | 26 | #define NCR5380_dma_residual NCR5380_dma_residual_none |
ff3d4578 | 27 | |
1da177e4 | 28 | #define NCR5380_queue_command oakscsi_queue_command |
8c32513b | 29 | #define NCR5380_info oakscsi_info |
1da177e4 | 30 | |
820682b1 | 31 | #define NCR5380_implementation_fields /* none */ |
1da177e4 | 32 | |
1da177e4 LT |
33 | #include "../NCR5380.h" |
34 | ||
35 | #undef START_DMA_INITIATOR_RECEIVE_REG | |
8b801ead | 36 | #define START_DMA_INITIATOR_RECEIVE_REG (128 + 7) |
1da177e4 | 37 | |
8b801ead RK |
38 | #define STAT ((128 + 16) << 2) |
39 | #define DATA ((128 + 8) << 2) | |
1da177e4 | 40 | |
4a98f896 | 41 | static inline int oakscsi_pwrite(struct NCR5380_hostdata *hostdata, |
6c4b88ca | 42 | unsigned char *addr, int len) |
1da177e4 | 43 | { |
4a98f896 | 44 | u8 __iomem *base = hostdata->io; |
8b801ead | 45 | |
1da177e4 | 46 | printk("writing %p len %d\n",addr, len); |
1da177e4 LT |
47 | |
48 | while(1) | |
49 | { | |
50 | int status; | |
8b801ead | 51 | while (((status = readw(base + STAT)) & 0x100)==0); |
1da177e4 | 52 | } |
438af51c | 53 | return 0; |
1da177e4 LT |
54 | } |
55 | ||
4a98f896 | 56 | static inline int oakscsi_pread(struct NCR5380_hostdata *hostdata, |
6c4b88ca | 57 | unsigned char *addr, int len) |
1da177e4 | 58 | { |
4a98f896 FT |
59 | u8 __iomem *base = hostdata->io; |
60 | ||
1da177e4 LT |
61 | printk("reading %p len %d\n", addr, len); |
62 | while(len > 0) | |
63 | { | |
8b801ead | 64 | unsigned int status, timeout; |
1da177e4 LT |
65 | unsigned long b; |
66 | ||
67 | timeout = 0x01FFFFFF; | |
68 | ||
8b801ead | 69 | while (((status = readw(base + STAT)) & 0x100)==0) |
1da177e4 LT |
70 | { |
71 | timeout--; | |
72 | if(status & 0x200 || !timeout) | |
73 | { | |
8b801ead | 74 | printk("status = %08X\n", status); |
438af51c | 75 | return -1; |
1da177e4 LT |
76 | } |
77 | } | |
8b801ead | 78 | |
1da177e4 LT |
79 | if(len >= 128) |
80 | { | |
8b801ead | 81 | readsw(base + DATA, addr, 128); |
1da177e4 LT |
82 | addr += 128; |
83 | len -= 128; | |
84 | } | |
85 | else | |
86 | { | |
8b801ead | 87 | b = (unsigned long) readw(base + DATA); |
1da177e4 LT |
88 | *addr ++ = b; |
89 | len -= 1; | |
90 | if(len) | |
91 | *addr ++ = b>>8; | |
92 | len -= 1; | |
93 | } | |
94 | } | |
95 | return 0; | |
96 | } | |
97 | ||
1da177e4 | 98 | #undef STAT |
8b801ead | 99 | #undef DATA |
1da177e4 LT |
100 | |
101 | #include "../NCR5380.c" | |
102 | ||
644d8d77 | 103 | static const struct scsi_host_template oakscsi_template = { |
1da177e4 | 104 | .module = THIS_MODULE, |
1da177e4 LT |
105 | .name = "Oak 16-bit SCSI", |
106 | .info = oakscsi_info, | |
107 | .queuecommand = oakscsi_queue_command, | |
108 | .eh_abort_handler = NCR5380_abort, | |
12e5fc66 | 109 | .eh_host_reset_handler = NCR5380_host_reset, |
1da177e4 LT |
110 | .can_queue = 16, |
111 | .this_id = 7, | |
112 | .sg_tablesize = SG_ALL, | |
113 | .cmd_per_lun = 2, | |
4af14d11 | 114 | .dma_boundary = PAGE_SIZE - 1, |
1da177e4 | 115 | .proc_name = "oakscsi", |
cd614642 | 116 | .cmd_size = sizeof(struct NCR5380_cmd), |
0a4e3612 | 117 | .max_sectors = 128, |
1da177e4 LT |
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; | |
713a8468 | 123 | int ret; |
1da177e4 | 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 | ||
820682b1 FT |
135 | priv(host)->io = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), |
136 | ecard_resource_len(ec, ECARD_RES_MEMC)); | |
137 | if (!priv(host)->io) { | |
8b801ead RK |
138 | ret = -ENOMEM; |
139 | goto unreg; | |
140 | } | |
141 | ||
22f5f10d | 142 | host->irq = NO_IRQ; |
1da177e4 | 143 | |
8053b0ee | 144 | ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP); |
0ad0eff9 FT |
145 | if (ret) |
146 | goto out_unmap; | |
1da177e4 | 147 | |
b6488f97 FT |
148 | NCR5380_maybe_reset_bus(host); |
149 | ||
1da177e4 LT |
150 | ret = scsi_add_host(host, &ec->dev); |
151 | if (ret) | |
0ad0eff9 | 152 | goto out_exit; |
1da177e4 LT |
153 | |
154 | scsi_scan_host(host); | |
155 | goto out; | |
156 | ||
0ad0eff9 FT |
157 | out_exit: |
158 | NCR5380_exit(host); | |
8b801ead | 159 | out_unmap: |
820682b1 | 160 | iounmap(priv(host)->io); |
1da177e4 LT |
161 | unreg: |
162 | scsi_host_put(host); | |
8b801ead RK |
163 | release: |
164 | ecard_release_resources(ec); | |
1da177e4 LT |
165 | out: |
166 | return ret; | |
167 | } | |
168 | ||
6f039790 | 169 | static void oakscsi_remove(struct expansion_card *ec) |
1da177e4 LT |
170 | { |
171 | struct Scsi_Host *host = ecard_get_drvdata(ec); | |
820682b1 | 172 | void __iomem *base = priv(host)->io; |
1da177e4 LT |
173 | |
174 | ecard_set_drvdata(ec, NULL); | |
175 | scsi_remove_host(host); | |
176 | ||
177 | NCR5380_exit(host); | |
1da177e4 | 178 | scsi_host_put(host); |
820682b1 | 179 | iounmap(base); |
8b801ead | 180 | ecard_release_resources(ec); |
1da177e4 LT |
181 | } |
182 | ||
183 | static const struct ecard_id oakscsi_cids[] = { | |
184 | { MANU_OAK, PROD_OAK_SCSI }, | |
185 | { 0xffff, 0xffff } | |
186 | }; | |
187 | ||
188 | static struct ecard_driver oakscsi_driver = { | |
189 | .probe = oakscsi_probe, | |
6f039790 | 190 | .remove = oakscsi_remove, |
1da177e4 LT |
191 | .id_table = oakscsi_cids, |
192 | .drv = { | |
193 | .name = "oakscsi", | |
194 | }, | |
195 | }; | |
196 | ||
197 | static int __init oakscsi_init(void) | |
198 | { | |
199 | return ecard_register_driver(&oakscsi_driver); | |
200 | } | |
201 | ||
202 | static void __exit oakscsi_exit(void) | |
203 | { | |
204 | ecard_remove_driver(&oakscsi_driver); | |
205 | } | |
206 | ||
207 | module_init(oakscsi_init); | |
208 | module_exit(oakscsi_exit); | |
209 | ||
210 | MODULE_AUTHOR("Russell King"); | |
211 | MODULE_DESCRIPTION("Oak SCSI driver"); | |
212 | MODULE_LICENSE("GPL"); | |
213 |