[PATCH] I2C: Move hwmon drivers (1/3)
[linux-2.6] / drivers / scsi / amiga7xx.c
1 /*
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
33 static int amiga7xx_register_one(Scsi_Host_Template *tpnt,
34                                  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
55 static 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
69 static int __init amiga7xx_zorro_detect(Scsi_Host_Template *tpnt)
70 {
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
93 int __init amiga7xx_detect(Scsi_Host_Template *tpnt)
94 {
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
114 static 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
126 static Scsi_Host_Template driver_template = {
127         .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"