This source file includes following definitions.
- zorro_find_device
- mark_region
- zorro_find_parent_resource
- amiga_zorro_probe
- amiga_zorro_init
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11 #include <linux/module.h>
12 #include <linux/types.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/zorro.h>
16 #include <linux/bitops.h>
17 #include <linux/string.h>
18 #include <linux/platform_device.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/slab.h>
21
22 #include <asm/byteorder.h>
23 #include <asm/setup.h>
24 #include <asm/amigahw.h>
25
26 #include "zorro.h"
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32
33 unsigned int zorro_num_autocon;
34 struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
35 struct zorro_dev *zorro_autocon;
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41
42 struct zorro_bus {
43 struct device dev;
44 struct zorro_dev devices[0];
45 };
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51
52 struct zorro_dev *zorro_find_device(zorro_id id, struct zorro_dev *from)
53 {
54 struct zorro_dev *z;
55
56 if (!zorro_num_autocon)
57 return NULL;
58
59 for (z = from ? from+1 : &zorro_autocon[0];
60 z < zorro_autocon+zorro_num_autocon;
61 z++)
62 if (id == ZORRO_WILDCARD || id == z->id)
63 return z;
64 return NULL;
65 }
66 EXPORT_SYMBOL(zorro_find_device);
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84 DECLARE_BITMAP(zorro_unused_z2ram, 128);
85 EXPORT_SYMBOL(zorro_unused_z2ram);
86
87
88 static void __init mark_region(unsigned long start, unsigned long end,
89 int flag)
90 {
91 if (flag)
92 start += Z2RAM_CHUNKMASK;
93 else
94 end += Z2RAM_CHUNKMASK;
95 start &= ~Z2RAM_CHUNKMASK;
96 end &= ~Z2RAM_CHUNKMASK;
97
98 if (end <= Z2RAM_START || start >= Z2RAM_END)
99 return;
100 start = start < Z2RAM_START ? 0x00000000 : start-Z2RAM_START;
101 end = end > Z2RAM_END ? Z2RAM_SIZE : end-Z2RAM_START;
102 while (start < end) {
103 u32 chunk = start>>Z2RAM_CHUNKSHIFT;
104
105 if (flag)
106 set_bit(chunk, zorro_unused_z2ram);
107 else
108 clear_bit(chunk, zorro_unused_z2ram);
109 start += Z2RAM_CHUNKSIZE;
110 }
111 }
112
113
114 static struct resource __init *zorro_find_parent_resource(
115 struct platform_device *bridge, struct zorro_dev *z)
116 {
117 int i;
118
119 for (i = 0; i < bridge->num_resources; i++) {
120 struct resource *r = &bridge->resource[i];
121
122 if (zorro_resource_start(z) >= r->start &&
123 zorro_resource_end(z) <= r->end)
124 return r;
125 }
126 return &iomem_resource;
127 }
128
129
130
131 static int __init amiga_zorro_probe(struct platform_device *pdev)
132 {
133 struct zorro_bus *bus;
134 struct zorro_dev_init *zi;
135 struct zorro_dev *z;
136 struct resource *r;
137 unsigned int i;
138 int error;
139
140
141 bus = kzalloc(struct_size(bus, devices, zorro_num_autocon),
142 GFP_KERNEL);
143 if (!bus)
144 return -ENOMEM;
145
146 zorro_autocon = bus->devices;
147 bus->dev.parent = &pdev->dev;
148 dev_set_name(&bus->dev, zorro_bus_type.name);
149 error = device_register(&bus->dev);
150 if (error) {
151 pr_err("Zorro: Error registering zorro_bus\n");
152 put_device(&bus->dev);
153 kfree(bus);
154 return error;
155 }
156 platform_set_drvdata(pdev, bus);
157
158 pr_info("Zorro: Probing AutoConfig expansion devices: %u device%s\n",
159 zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
160
161
162 for (i = 0; i < zorro_num_autocon; i++) {
163 zi = &zorro_autocon_init[i];
164 z = &zorro_autocon[i];
165
166 z->rom = zi->rom;
167 z->id = (be16_to_cpu(z->rom.er_Manufacturer) << 16) |
168 (z->rom.er_Product << 8);
169 if (z->id == ZORRO_PROD_GVP_EPC_BASE) {
170
171 unsigned long magic = zi->boardaddr + 0x8000;
172
173 z->id |= *(u16 *)ZTWO_VADDR(magic) & GVP_PRODMASK;
174 }
175 z->slotaddr = zi->slotaddr;
176 z->slotsize = zi->slotsize;
177 sprintf(z->name, "Zorro device %08x", z->id);
178 zorro_name_device(z);
179 z->resource.start = zi->boardaddr;
180 z->resource.end = zi->boardaddr + zi->boardsize - 1;
181 z->resource.name = z->name;
182 r = zorro_find_parent_resource(pdev, z);
183 error = request_resource(r, &z->resource);
184 if (error)
185 dev_err(&bus->dev,
186 "Address space collision on device %s %pR\n",
187 z->name, &z->resource);
188 z->dev.parent = &bus->dev;
189 z->dev.bus = &zorro_bus_type;
190 z->dev.id = i;
191 switch (z->rom.er_Type & ERT_TYPEMASK) {
192 case ERT_ZORROIII:
193 z->dev.coherent_dma_mask = DMA_BIT_MASK(32);
194 break;
195
196 case ERT_ZORROII:
197 default:
198 z->dev.coherent_dma_mask = DMA_BIT_MASK(24);
199 break;
200 }
201 z->dev.dma_mask = &z->dev.coherent_dma_mask;
202 }
203
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205 for (i = 0; i < zorro_num_autocon; i++) {
206 z = &zorro_autocon[i];
207 error = device_register(&z->dev);
208 if (error) {
209 dev_err(&bus->dev, "Error registering device %s\n",
210 z->name);
211 put_device(&z->dev);
212 continue;
213 }
214 }
215
216
217 zorro_for_each_dev(z) {
218 if (z->rom.er_Type & ERTF_MEMLIST)
219 mark_region(zorro_resource_start(z),
220 zorro_resource_end(z)+1, 1);
221 }
222
223
224 for (i = 0; i < m68k_num_memory; i++)
225 if (m68k_memory[i].addr < 16*1024*1024)
226 mark_region(m68k_memory[i].addr,
227 m68k_memory[i].addr+m68k_memory[i].size,
228 0);
229
230 return 0;
231 }
232
233 static struct platform_driver amiga_zorro_driver = {
234 .driver = {
235 .name = "amiga-zorro",
236 },
237 };
238
239 static int __init amiga_zorro_init(void)
240 {
241 return platform_driver_probe(&amiga_zorro_driver, amiga_zorro_probe);
242 }
243
244 module_init(amiga_zorro_init);
245
246 MODULE_LICENSE("GPL");