[PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason
[linux-2.6.git] / 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/config.h>
15 #include <linux/zorro.h>
16 #include <linux/stat.h>
17
18 #include <asm/setup.h>
19 #include <asm/page.h>
20 #include <asm/pgtable.h>
21 #include <asm/amigaints.h>
22 #include <asm/amigahw.h>
23 #include <asm/dma.h>
24 #include <asm/irq.h>
25
26 #include "scsi.h"
27 #include <scsi/scsi_host.h>
28 #include "53c7xx.h"
29 #include "amiga7xx.h"
30
31
32 static int amiga7xx_register_one(Scsi_Host_Template *tpnt,
33                                  unsigned long address)
34 {
35     long long options;
36     int clock;
37
38     if (!request_mem_region(address, 0x1000, "ncr53c710"))
39         return 0;
40
41     address = (unsigned long)z_ioremap(address, 0x1000);
42     options = OPTION_MEMORY_MAPPED | OPTION_DEBUG_TEST1 | OPTION_INTFLY |
43               OPTION_SYNCHRONOUS | OPTION_ALWAYS_SYNCHRONOUS |
44               OPTION_DISCONNECT;
45     clock = 50000000;   /* 50 MHz SCSI Clock */
46     ncr53c7xx_init(tpnt, 0, 710, address, 0, IRQ_AMIGA_PORTS, DMA_NONE,
47                    options, clock);
48     return 1;
49 }
50
51
52 #ifdef CONFIG_ZORRO
53
54 static struct {
55     zorro_id id;
56     unsigned long offset;
57     int absolute;       /* offset is absolute address */
58 } amiga7xx_table[] = {
59     { .id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS, .offset = 0xf40000,
60       .absolute = 1 },
61     { .id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx, .offset = 0x40000 },
62     { .id = ZORRO_PROD_CBM_A4091_1, .offset = 0x800000 },
63     { .id = ZORRO_PROD_CBM_A4091_2, .offset = 0x800000 },
64     { .id = ZORRO_PROD_GVP_GFORCE_040_060, .offset = 0x40000 },
65     { 0 }
66 };
67
68 static int __init amiga7xx_zorro_detect(Scsi_Host_Template *tpnt)
69 {
70     int num = 0, i;
71     struct zorro_dev *z = NULL;
72     unsigned long address;
73
74     while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
75         for (i = 0; amiga7xx_table[i].id; i++)
76             if (z->id == amiga7xx_table[i].id)
77                 break;
78         if (!amiga7xx_table[i].id)
79             continue;
80         if (amiga7xx_table[i].absolute)
81             address = amiga7xx_table[i].offset;
82         else
83             address = z->resource.start + amiga7xx_table[i].offset;
84         num += amiga7xx_register_one(tpnt, address);
85     }
86     return num;
87 }
88
89 #endif /* CONFIG_ZORRO */
90
91
92 int __init amiga7xx_detect(Scsi_Host_Template *tpnt)
93 {
94     static unsigned char called = 0;
95     int num = 0;
96
97     if (called || !MACH_IS_AMIGA)
98         return 0;
99
100     tpnt->proc_name = "Amiga7xx";
101
102     if (AMIGAHW_PRESENT(A4000_SCSI))
103         num += amiga7xx_register_one(tpnt, 0xdd0040);
104
105 #ifdef CONFIG_ZORRO
106     num += amiga7xx_zorro_detect(tpnt);
107 #endif
108
109     called = 1;
110     return num;
111 }
112
113 static int amiga7xx_release(struct Scsi_Host *shost)
114 {
115         if (shost->irq)
116                 free_irq(shost->irq, NULL);
117         if (shost->dma_channel != 0xff)
118                 free_dma(shost->dma_channel);
119         if (shost->io_port && shost->n_io_port)
120                 release_region(shost->io_port, shost->n_io_port);
121         scsi_unregister(shost);
122         return 0;
123 }
124
125 static Scsi_Host_Template driver_template = {
126         .name                   = "Amiga NCR53c710 SCSI",
127         .detect                 = amiga7xx_detect,
128         .release                = amiga7xx_release,
129         .queuecommand           = NCR53c7xx_queue_command,
130         .abort                  = NCR53c7xx_abort,
131         .reset                  = NCR53c7xx_reset,
132         .can_queue              = 24,
133         .this_id                = 7,
134         .sg_tablesize           = 63,
135         .cmd_per_lun            = 3,
136         .use_clustering         = DISABLE_CLUSTERING
137 };
138
139
140 #include "scsi_module.c"