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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Oak Generic NCR5380 driver
4 *
5 * Copyright 1995-2002, Russell King
6 */
7
8#include <linux/module.h>
9#include <linux/ioport.h>
10#include <linux/blkdev.h>
11#include <linux/init.h>
12
13#include <asm/ecard.h>
14#include <asm/io.h>
15
16#include <scsi/scsi_host.h>
17
18#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
19
20#define NCR5380_read(reg) readb(hostdata->io + ((reg) << 2))
21#define NCR5380_write(reg, value) writeb(value, hostdata->io + ((reg) << 2))
22
23#define NCR5380_dma_xfer_len NCR5380_dma_xfer_none
24#define NCR5380_dma_recv_setup oakscsi_pread
25#define NCR5380_dma_send_setup oakscsi_pwrite
26#define NCR5380_dma_residual NCR5380_dma_residual_none
27
28#define NCR5380_queue_command oakscsi_queue_command
29#define NCR5380_info oakscsi_info
30
31#define NCR5380_implementation_fields /* none */
32
33#include "../NCR5380.h"
34
35#undef START_DMA_INITIATOR_RECEIVE_REG
36#define START_DMA_INITIATOR_RECEIVE_REG (128 + 7)
37
38#define STAT ((128 + 16) << 2)
39#define DATA ((128 + 8) << 2)
40
41static inline int oakscsi_pwrite(struct NCR5380_hostdata *hostdata,
42 unsigned char *addr, int len)
43{
44 u8 __iomem *base = hostdata->io;
45
46printk("writing %p len %d\n",addr, len);
47
48 while(1)
49 {
50 int status;
51 while (((status = readw(base + STAT)) & 0x100)==0);
52 }
53 return 0;
54}
55
56static inline int oakscsi_pread(struct NCR5380_hostdata *hostdata,
57 unsigned char *addr, int len)
58{
59 u8 __iomem *base = hostdata->io;
60
61printk("reading %p len %d\n", addr, len);
62 while(len > 0)
63 {
64 unsigned int status, timeout;
65 unsigned long b;
66
67 timeout = 0x01FFFFFF;
68
69 while (((status = readw(base + STAT)) & 0x100)==0)
70 {
71 timeout--;
72 if(status & 0x200 || !timeout)
73 {
74 printk("status = %08X\n", status);
75 return -1;
76 }
77 }
78
79 if(len >= 128)
80 {
81 readsw(base + DATA, addr, 128);
82 addr += 128;
83 len -= 128;
84 }
85 else
86 {
87 b = (unsigned long) readw(base + DATA);
88 *addr ++ = b;
89 len -= 1;
90 if(len)
91 *addr ++ = b>>8;
92 len -= 1;
93 }
94 }
95 return 0;
96}
97
98#undef STAT
99#undef DATA
100
101#include "../NCR5380.c"
102
103static const struct scsi_host_template oakscsi_template = {
104 .module = THIS_MODULE,
105 .name = "Oak 16-bit SCSI",
106 .info = oakscsi_info,
107 .queuecommand = oakscsi_queue_command,
108 .eh_abort_handler = NCR5380_abort,
109 .eh_host_reset_handler = NCR5380_host_reset,
110 .can_queue = 16,
111 .this_id = 7,
112 .sg_tablesize = SG_ALL,
113 .cmd_per_lun = 2,
114 .dma_boundary = PAGE_SIZE - 1,
115 .proc_name = "oakscsi",
116 .cmd_size = sizeof(struct NCR5380_cmd),
117 .max_sectors = 128,
118};
119
120static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
121{
122 struct Scsi_Host *host;
123 int ret;
124
125 ret = ecard_request_resources(ec);
126 if (ret)
127 goto out;
128
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)->io = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
136 ecard_resource_len(ec, ECARD_RES_MEMC));
137 if (!priv(host)->io) {
138 ret = -ENOMEM;
139 goto unreg;
140 }
141
142 host->irq = NO_IRQ;
143
144 ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP);
145 if (ret)
146 goto out_unmap;
147
148 NCR5380_maybe_reset_bus(host);
149
150 ret = scsi_add_host(host, &ec->dev);
151 if (ret)
152 goto out_exit;
153
154 scsi_scan_host(host);
155 goto out;
156
157 out_exit:
158 NCR5380_exit(host);
159 out_unmap:
160 iounmap(priv(host)->io);
161 unreg:
162 scsi_host_put(host);
163 release:
164 ecard_release_resources(ec);
165 out:
166 return ret;
167}
168
169static void oakscsi_remove(struct expansion_card *ec)
170{
171 struct Scsi_Host *host = ecard_get_drvdata(ec);
172 void __iomem *base = priv(host)->io;
173
174 ecard_set_drvdata(ec, NULL);
175 scsi_remove_host(host);
176
177 NCR5380_exit(host);
178 scsi_host_put(host);
179 iounmap(base);
180 ecard_release_resources(ec);
181}
182
183static const struct ecard_id oakscsi_cids[] = {
184 { MANU_OAK, PROD_OAK_SCSI },
185 { 0xffff, 0xffff }
186};
187
188static struct ecard_driver oakscsi_driver = {
189 .probe = oakscsi_probe,
190 .remove = oakscsi_remove,
191 .id_table = oakscsi_cids,
192 .drv = {
193 .name = "oakscsi",
194 },
195};
196
197static int __init oakscsi_init(void)
198{
199 return ecard_register_driver(&oakscsi_driver);
200}
201
202static void __exit oakscsi_exit(void)
203{
204 ecard_remove_driver(&oakscsi_driver);
205}
206
207module_init(oakscsi_init);
208module_exit(oakscsi_exit);
209
210MODULE_AUTHOR("Russell King");
211MODULE_DESCRIPTION("Oak SCSI driver");
212MODULE_LICENSE("GPL");
213
1/*
2 * Oak Generic NCR5380 driver
3 *
4 * Copyright 1995-2002, Russell King
5 */
6
7#include <linux/module.h>
8#include <linux/ioport.h>
9#include <linux/blkdev.h>
10#include <linux/init.h>
11
12#include <asm/ecard.h>
13#include <asm/io.h>
14
15#include <scsi/scsi_host.h>
16
17/*#define PSEUDO_DMA*/
18#define DONT_USE_INTR
19
20#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
21
22#define NCR5380_read(reg) \
23 readb(priv(instance)->base + ((reg) << 2))
24#define NCR5380_write(reg, value) \
25 writeb(value, priv(instance)->base + ((reg) << 2))
26
27#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
28
29#define NCR5380_queue_command oakscsi_queue_command
30#define NCR5380_info oakscsi_info
31
32#define NCR5380_implementation_fields \
33 void __iomem *base
34
35#include "../NCR5380.h"
36
37#undef START_DMA_INITIATOR_RECEIVE_REG
38#define START_DMA_INITIATOR_RECEIVE_REG (128 + 7)
39
40#define STAT ((128 + 16) << 2)
41#define DATA ((128 + 8) << 2)
42
43static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr,
44 int len)
45{
46 void __iomem *base = priv(instance)->base;
47
48printk("writing %p len %d\n",addr, len);
49 if(!len) return -1;
50
51 while(1)
52 {
53 int status;
54 while (((status = readw(base + STAT)) & 0x100)==0);
55 }
56}
57
58static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr,
59 int len)
60{
61 void __iomem *base = priv(instance)->base;
62printk("reading %p len %d\n", addr, len);
63 while(len > 0)
64 {
65 unsigned int status, timeout;
66 unsigned long b;
67
68 timeout = 0x01FFFFFF;
69
70 while (((status = readw(base + STAT)) & 0x100)==0)
71 {
72 timeout--;
73 if(status & 0x200 || !timeout)
74 {
75 printk("status = %08X\n", status);
76 return 1;
77 }
78 }
79
80 if(len >= 128)
81 {
82 readsw(base + DATA, addr, 128);
83 addr += 128;
84 len -= 128;
85 }
86 else
87 {
88 b = (unsigned long) readw(base + DATA);
89 *addr ++ = b;
90 len -= 1;
91 if(len)
92 *addr ++ = b>>8;
93 len -= 1;
94 }
95 }
96 return 0;
97}
98
99#undef STAT
100#undef DATA
101
102#include "../NCR5380.c"
103
104static struct scsi_host_template oakscsi_template = {
105 .module = THIS_MODULE,
106 .name = "Oak 16-bit SCSI",
107 .info = oakscsi_info,
108 .queuecommand = oakscsi_queue_command,
109 .eh_abort_handler = NCR5380_abort,
110 .eh_bus_reset_handler = NCR5380_bus_reset,
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",
117 .cmd_size = NCR5380_CMD_SIZE,
118 .max_sectors = 128,
119};
120
121static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id)
122{
123 struct Scsi_Host *host;
124 int ret = -ENOMEM;
125
126 ret = ecard_request_resources(ec);
127 if (ret)
128 goto out;
129
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
143 host->irq = NO_IRQ;
144 host->n_io_port = 255;
145
146 ret = NCR5380_init(host, 0);
147 if (ret)
148 goto out_unmap;
149
150 NCR5380_maybe_reset_bus(host);
151
152 ret = scsi_add_host(host, &ec->dev);
153 if (ret)
154 goto out_exit;
155
156 scsi_scan_host(host);
157 goto out;
158
159 out_exit:
160 NCR5380_exit(host);
161 out_unmap:
162 iounmap(priv(host)->base);
163 unreg:
164 scsi_host_put(host);
165 release:
166 ecard_release_resources(ec);
167 out:
168 return ret;
169}
170
171static void oakscsi_remove(struct expansion_card *ec)
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);
179 iounmap(priv(host)->base);
180 scsi_host_put(host);
181 ecard_release_resources(ec);
182}
183
184static const struct ecard_id oakscsi_cids[] = {
185 { MANU_OAK, PROD_OAK_SCSI },
186 { 0xffff, 0xffff }
187};
188
189static struct ecard_driver oakscsi_driver = {
190 .probe = oakscsi_probe,
191 .remove = oakscsi_remove,
192 .id_table = oakscsi_cids,
193 .drv = {
194 .name = "oakscsi",
195 },
196};
197
198static int __init oakscsi_init(void)
199{
200 return ecard_register_driver(&oakscsi_driver);
201}
202
203static void __exit oakscsi_exit(void)
204{
205 ecard_remove_driver(&oakscsi_driver);
206}
207
208module_init(oakscsi_init);
209module_exit(oakscsi_exit);
210
211MODULE_AUTHOR("Russell King");
212MODULE_DESCRIPTION("Oak SCSI driver");
213MODULE_LICENSE("GPL");
214