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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
3 * Amiga MacroSystemUS WarpEngine SCSI controller.
4 * Amiga Technologies A4000T SCSI controller.
5 * Amiga Technologies/DKB A4091 SCSI controller.
6 *
7 * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
8 * plus modifications of the 53c7xx.c driver to support the Amiga.
9 */
10#include <linux/types.h>
11#include <linux/mm.h>
12#include <linux/blkdev.h>
13#include <linux/sched.h>
14#include <linux/version.h>
15#include <linux/config.h>
16#include <linux/zorro.h>
17#include <linux/stat.h>
18
19#include <asm/setup.h>
20#include <asm/page.h>
21#include <asm/pgtable.h>
22#include <asm/amigaints.h>
23#include <asm/amigahw.h>
24#include <asm/dma.h>
25#include <asm/irq.h>
26
27#include "scsi.h"
28#include <scsi/scsi_host.h>
29#include "53c7xx.h"
30#include "amiga7xx.h"
31
32
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +010033static int amiga7xx_register_one(struct scsi_host_template *tpnt,
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 unsigned long address)
35{
36 long long options;
37 int clock;
38
39 if (!request_mem_region(address, 0x1000, "ncr53c710"))
40 return 0;
41
42 address = (unsigned long)z_ioremap(address, 0x1000);
43 options = OPTION_MEMORY_MAPPED | OPTION_DEBUG_TEST1 | OPTION_INTFLY |
44 OPTION_SYNCHRONOUS | OPTION_ALWAYS_SYNCHRONOUS |
45 OPTION_DISCONNECT;
46 clock = 50000000; /* 50 MHz SCSI Clock */
47 ncr53c7xx_init(tpnt, 0, 710, address, 0, IRQ_AMIGA_PORTS, DMA_NONE,
48 options, clock);
49 return 1;
50}
51
52
53#ifdef CONFIG_ZORRO
54
55static struct {
56 zorro_id id;
57 unsigned long offset;
58 int absolute; /* offset is absolute address */
59} amiga7xx_table[] = {
60 { .id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS, .offset = 0xf40000,
61 .absolute = 1 },
62 { .id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx, .offset = 0x40000 },
63 { .id = ZORRO_PROD_CBM_A4091_1, .offset = 0x800000 },
64 { .id = ZORRO_PROD_CBM_A4091_2, .offset = 0x800000 },
65 { .id = ZORRO_PROD_GVP_GFORCE_040_060, .offset = 0x40000 },
66 { 0 }
67};
68
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +010069static int __init amiga7xx_zorro_detect(struct scsi_host_template *tpnt)
Linus Torvalds1da177e2005-04-16 15:20:36 -070070{
71 int num = 0, i;
72 struct zorro_dev *z = NULL;
73 unsigned long address;
74
75 while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
76 for (i = 0; amiga7xx_table[i].id; i++)
77 if (z->id == amiga7xx_table[i].id)
78 break;
79 if (!amiga7xx_table[i].id)
80 continue;
81 if (amiga7xx_table[i].absolute)
82 address = amiga7xx_table[i].offset;
83 else
84 address = z->resource.start + amiga7xx_table[i].offset;
85 num += amiga7xx_register_one(tpnt, address);
86 }
87 return num;
88}
89
90#endif /* CONFIG_ZORRO */
91
92
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +010093int __init amiga7xx_detect(struct scsi_host_template *tpnt)
Linus Torvalds1da177e2005-04-16 15:20:36 -070094{
95 static unsigned char called = 0;
96 int num = 0;
97
98 if (called || !MACH_IS_AMIGA)
99 return 0;
100
101 tpnt->proc_name = "Amiga7xx";
102
103 if (AMIGAHW_PRESENT(A4000_SCSI))
104 num += amiga7xx_register_one(tpnt, 0xdd0040);
105
106#ifdef CONFIG_ZORRO
107 num += amiga7xx_zorro_detect(tpnt);
108#endif
109
110 called = 1;
111 return num;
112}
113
114static int amiga7xx_release(struct Scsi_Host *shost)
115{
116 if (shost->irq)
117 free_irq(shost->irq, NULL);
118 if (shost->dma_channel != 0xff)
119 free_dma(shost->dma_channel);
120 if (shost->io_port && shost->n_io_port)
121 release_region(shost->io_port, shost->n_io_port);
122 scsi_unregister(shost);
123 return 0;
124}
125
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100126static struct scsi_host_template driver_template = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 .name = "Amiga NCR53c710 SCSI",
128 .detect = amiga7xx_detect,
129 .release = amiga7xx_release,
130 .queuecommand = NCR53c7xx_queue_command,
131 .abort = NCR53c7xx_abort,
132 .reset = NCR53c7xx_reset,
133 .can_queue = 24,
134 .this_id = 7,
135 .sg_tablesize = 63,
136 .cmd_per_lun = 3,
137 .use_clustering = DISABLE_CLUSTERING
138};
139
140
141#include "scsi_module.c"