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1da177e4 LT |
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" |