Commit | Line | Data |
---|---|---|
b00dc837 | 1 | /* |
1da177e4 LT |
2 | * ebus.c: PCI to EBus bridge device. |
3 | * | |
4 | * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be) | |
5 | * Copyright (C) 1999 David S. Miller (davem@redhat.com) | |
6 | */ | |
7 | ||
1da177e4 LT |
8 | #include <linux/module.h> |
9 | #include <linux/kernel.h> | |
10 | #include <linux/types.h> | |
11 | #include <linux/init.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/string.h> | |
14 | #include <linux/interrupt.h> | |
15 | #include <linux/delay.h> | |
c57c2ffb | 16 | #include <linux/pci.h> |
764f2579 | 17 | #include <linux/of_device.h> |
1da177e4 LT |
18 | |
19 | #include <asm/system.h> | |
20 | #include <asm/page.h> | |
1da177e4 LT |
21 | #include <asm/ebus.h> |
22 | #include <asm/oplib.h> | |
2b1e5978 | 23 | #include <asm/prom.h> |
1da177e4 | 24 | #include <asm/irq.h> |
c57c2ffb | 25 | #include <asm/io.h> |
1da177e4 LT |
26 | |
27 | /* EBUS dma library. */ | |
28 | ||
29 | #define EBDMA_CSR 0x00UL /* Control/Status */ | |
30 | #define EBDMA_ADDR 0x04UL /* DMA Address */ | |
31 | #define EBDMA_COUNT 0x08UL /* DMA Count */ | |
32 | ||
33 | #define EBDMA_CSR_INT_PEND 0x00000001 | |
34 | #define EBDMA_CSR_ERR_PEND 0x00000002 | |
35 | #define EBDMA_CSR_DRAIN 0x00000004 | |
36 | #define EBDMA_CSR_INT_EN 0x00000010 | |
37 | #define EBDMA_CSR_RESET 0x00000080 | |
38 | #define EBDMA_CSR_WRITE 0x00000100 | |
39 | #define EBDMA_CSR_EN_DMA 0x00000200 | |
40 | #define EBDMA_CSR_CYC_PEND 0x00000400 | |
41 | #define EBDMA_CSR_DIAG_RD_DONE 0x00000800 | |
42 | #define EBDMA_CSR_DIAG_WR_DONE 0x00001000 | |
43 | #define EBDMA_CSR_EN_CNT 0x00002000 | |
44 | #define EBDMA_CSR_TC 0x00004000 | |
45 | #define EBDMA_CSR_DIS_CSR_DRN 0x00010000 | |
46 | #define EBDMA_CSR_BURST_SZ_MASK 0x000c0000 | |
47 | #define EBDMA_CSR_BURST_SZ_1 0x00080000 | |
48 | #define EBDMA_CSR_BURST_SZ_4 0x00000000 | |
49 | #define EBDMA_CSR_BURST_SZ_8 0x00040000 | |
50 | #define EBDMA_CSR_BURST_SZ_16 0x000c0000 | |
51 | #define EBDMA_CSR_DIAG_EN 0x00100000 | |
52 | #define EBDMA_CSR_DIS_ERR_PEND 0x00400000 | |
53 | #define EBDMA_CSR_TCI_DIS 0x00800000 | |
54 | #define EBDMA_CSR_EN_NEXT 0x01000000 | |
55 | #define EBDMA_CSR_DMA_ON 0x02000000 | |
56 | #define EBDMA_CSR_A_LOADED 0x04000000 | |
57 | #define EBDMA_CSR_NA_LOADED 0x08000000 | |
58 | #define EBDMA_CSR_DEV_ID_MASK 0xf0000000 | |
59 | ||
60 | #define EBUS_DMA_RESET_TIMEOUT 10000 | |
61 | ||
62 | static void __ebus_dma_reset(struct ebus_dma_info *p, int no_drain) | |
63 | { | |
64 | int i; | |
65 | u32 val = 0; | |
66 | ||
67 | writel(EBDMA_CSR_RESET, p->regs + EBDMA_CSR); | |
68 | udelay(1); | |
69 | ||
70 | if (no_drain) | |
71 | return; | |
72 | ||
73 | for (i = EBUS_DMA_RESET_TIMEOUT; i > 0; i--) { | |
74 | val = readl(p->regs + EBDMA_CSR); | |
75 | ||
76 | if (!(val & (EBDMA_CSR_DRAIN | EBDMA_CSR_CYC_PEND))) | |
77 | break; | |
78 | udelay(10); | |
79 | } | |
80 | } | |
81 | ||
6d24c8dc | 82 | static irqreturn_t ebus_dma_irq(int irq, void *dev_id) |
1da177e4 LT |
83 | { |
84 | struct ebus_dma_info *p = dev_id; | |
85 | unsigned long flags; | |
86 | u32 csr = 0; | |
87 | ||
88 | spin_lock_irqsave(&p->lock, flags); | |
89 | csr = readl(p->regs + EBDMA_CSR); | |
90 | writel(csr, p->regs + EBDMA_CSR); | |
91 | spin_unlock_irqrestore(&p->lock, flags); | |
92 | ||
93 | if (csr & EBDMA_CSR_ERR_PEND) { | |
94 | printk(KERN_CRIT "ebus_dma(%s): DMA error!\n", p->name); | |
95 | p->callback(p, EBUS_DMA_EVENT_ERROR, p->client_cookie); | |
96 | return IRQ_HANDLED; | |
97 | } else if (csr & EBDMA_CSR_INT_PEND) { | |
98 | p->callback(p, | |
99 | (csr & EBDMA_CSR_TC) ? | |
100 | EBUS_DMA_EVENT_DMA : EBUS_DMA_EVENT_DEVICE, | |
101 | p->client_cookie); | |
102 | return IRQ_HANDLED; | |
103 | } | |
104 | ||
105 | return IRQ_NONE; | |
106 | ||
107 | } | |
108 | ||
109 | int ebus_dma_register(struct ebus_dma_info *p) | |
110 | { | |
111 | u32 csr; | |
112 | ||
113 | if (!p->regs) | |
114 | return -EINVAL; | |
115 | if (p->flags & ~(EBUS_DMA_FLAG_USE_EBDMA_HANDLER | | |
116 | EBUS_DMA_FLAG_TCI_DISABLE)) | |
117 | return -EINVAL; | |
118 | if ((p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) && !p->callback) | |
119 | return -EINVAL; | |
120 | if (!strlen(p->name)) | |
121 | return -EINVAL; | |
122 | ||
123 | __ebus_dma_reset(p, 1); | |
124 | ||
125 | csr = EBDMA_CSR_BURST_SZ_16 | EBDMA_CSR_EN_CNT; | |
126 | ||
127 | if (p->flags & EBUS_DMA_FLAG_TCI_DISABLE) | |
128 | csr |= EBDMA_CSR_TCI_DIS; | |
129 | ||
130 | writel(csr, p->regs + EBDMA_CSR); | |
131 | ||
132 | return 0; | |
133 | } | |
134 | EXPORT_SYMBOL(ebus_dma_register); | |
135 | ||
136 | int ebus_dma_irq_enable(struct ebus_dma_info *p, int on) | |
137 | { | |
138 | unsigned long flags; | |
139 | u32 csr; | |
140 | ||
141 | if (on) { | |
142 | if (p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) { | |
d356d7f4 | 143 | if (request_irq(p->irq, ebus_dma_irq, IRQF_SHARED, p->name, p)) |
1da177e4 LT |
144 | return -EBUSY; |
145 | } | |
146 | ||
147 | spin_lock_irqsave(&p->lock, flags); | |
148 | csr = readl(p->regs + EBDMA_CSR); | |
149 | csr |= EBDMA_CSR_INT_EN; | |
150 | writel(csr, p->regs + EBDMA_CSR); | |
151 | spin_unlock_irqrestore(&p->lock, flags); | |
152 | } else { | |
153 | spin_lock_irqsave(&p->lock, flags); | |
154 | csr = readl(p->regs + EBDMA_CSR); | |
155 | csr &= ~EBDMA_CSR_INT_EN; | |
156 | writel(csr, p->regs + EBDMA_CSR); | |
157 | spin_unlock_irqrestore(&p->lock, flags); | |
158 | ||
159 | if (p->flags & EBUS_DMA_FLAG_USE_EBDMA_HANDLER) { | |
160 | free_irq(p->irq, p); | |
161 | } | |
162 | } | |
163 | ||
164 | return 0; | |
165 | } | |
166 | EXPORT_SYMBOL(ebus_dma_irq_enable); | |
167 | ||
168 | void ebus_dma_unregister(struct ebus_dma_info *p) | |
169 | { | |
170 | unsigned long flags; | |
171 | u32 csr; | |
172 | int irq_on = 0; | |
173 | ||
174 | spin_lock_irqsave(&p->lock, flags); | |
175 | csr = readl(p->regs + EBDMA_CSR); | |
176 | if (csr & EBDMA_CSR_INT_EN) { | |
177 | csr &= ~EBDMA_CSR_INT_EN; | |
178 | writel(csr, p->regs + EBDMA_CSR); | |
179 | irq_on = 1; | |
180 | } | |
181 | spin_unlock_irqrestore(&p->lock, flags); | |
182 | ||
183 | if (irq_on) | |
184 | free_irq(p->irq, p); | |
185 | } | |
186 | EXPORT_SYMBOL(ebus_dma_unregister); | |
187 | ||
188 | int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr, size_t len) | |
189 | { | |
190 | unsigned long flags; | |
191 | u32 csr; | |
192 | int err; | |
193 | ||
194 | if (len >= (1 << 24)) | |
195 | return -EINVAL; | |
196 | ||
197 | spin_lock_irqsave(&p->lock, flags); | |
198 | csr = readl(p->regs + EBDMA_CSR); | |
199 | err = -EINVAL; | |
200 | if (!(csr & EBDMA_CSR_EN_DMA)) | |
201 | goto out; | |
202 | err = -EBUSY; | |
203 | if (csr & EBDMA_CSR_NA_LOADED) | |
204 | goto out; | |
205 | ||
206 | writel(len, p->regs + EBDMA_COUNT); | |
207 | writel(bus_addr, p->regs + EBDMA_ADDR); | |
208 | err = 0; | |
209 | ||
210 | out: | |
211 | spin_unlock_irqrestore(&p->lock, flags); | |
212 | ||
213 | return err; | |
214 | } | |
215 | EXPORT_SYMBOL(ebus_dma_request); | |
216 | ||
217 | void ebus_dma_prepare(struct ebus_dma_info *p, int write) | |
218 | { | |
219 | unsigned long flags; | |
220 | u32 csr; | |
221 | ||
222 | spin_lock_irqsave(&p->lock, flags); | |
223 | __ebus_dma_reset(p, 0); | |
224 | ||
225 | csr = (EBDMA_CSR_INT_EN | | |
226 | EBDMA_CSR_EN_CNT | | |
227 | EBDMA_CSR_BURST_SZ_16 | | |
228 | EBDMA_CSR_EN_NEXT); | |
229 | ||
230 | if (write) | |
231 | csr |= EBDMA_CSR_WRITE; | |
232 | if (p->flags & EBUS_DMA_FLAG_TCI_DISABLE) | |
233 | csr |= EBDMA_CSR_TCI_DIS; | |
234 | ||
235 | writel(csr, p->regs + EBDMA_CSR); | |
236 | ||
237 | spin_unlock_irqrestore(&p->lock, flags); | |
238 | } | |
239 | EXPORT_SYMBOL(ebus_dma_prepare); | |
240 | ||
241 | unsigned int ebus_dma_residue(struct ebus_dma_info *p) | |
242 | { | |
243 | return readl(p->regs + EBDMA_COUNT); | |
244 | } | |
245 | EXPORT_SYMBOL(ebus_dma_residue); | |
246 | ||
247 | unsigned int ebus_dma_addr(struct ebus_dma_info *p) | |
248 | { | |
249 | return readl(p->regs + EBDMA_ADDR); | |
250 | } | |
251 | EXPORT_SYMBOL(ebus_dma_addr); | |
252 | ||
253 | void ebus_dma_enable(struct ebus_dma_info *p, int on) | |
254 | { | |
255 | unsigned long flags; | |
256 | u32 orig_csr, csr; | |
257 | ||
258 | spin_lock_irqsave(&p->lock, flags); | |
259 | orig_csr = csr = readl(p->regs + EBDMA_CSR); | |
260 | if (on) | |
261 | csr |= EBDMA_CSR_EN_DMA; | |
262 | else | |
263 | csr &= ~EBDMA_CSR_EN_DMA; | |
264 | if ((orig_csr & EBDMA_CSR_EN_DMA) != | |
265 | (csr & EBDMA_CSR_EN_DMA)) | |
266 | writel(csr, p->regs + EBDMA_CSR); | |
267 | spin_unlock_irqrestore(&p->lock, flags); | |
268 | } | |
269 | EXPORT_SYMBOL(ebus_dma_enable); | |
270 | ||
271 | struct linux_ebus *ebus_chain = NULL; | |
272 | ||
1da177e4 LT |
273 | static inline void *ebus_alloc(size_t size) |
274 | { | |
275 | void *mem; | |
276 | ||
9132983a | 277 | mem = kzalloc(size, GFP_ATOMIC); |
1da177e4 LT |
278 | if (!mem) |
279 | panic("ebus_alloc: out of memory"); | |
1da177e4 LT |
280 | return mem; |
281 | } | |
282 | ||
2b1e5978 DM |
283 | static void __init fill_ebus_child(struct device_node *dp, |
284 | struct linux_ebus_child *dev, | |
285 | int non_standard_regs) | |
1da177e4 | 286 | { |
2b1e5978 | 287 | struct of_device *op; |
6a23acf3 | 288 | const int *regs; |
1da177e4 LT |
289 | int i, len; |
290 | ||
690c8fd3 DM |
291 | dev->prom_node = dp; |
292 | printk(" (%s)", dp->name); | |
1da177e4 | 293 | |
690c8fd3 DM |
294 | regs = of_get_property(dp, "reg", &len); |
295 | if (!regs) | |
296 | dev->num_addrs = 0; | |
297 | else | |
298 | dev->num_addrs = len / sizeof(regs[0]); | |
1da177e4 LT |
299 | |
300 | if (non_standard_regs) { | |
301 | /* This is to handle reg properties which are not | |
302 | * in the parent relative format. One example are | |
303 | * children of the i2c device on CompactPCI systems. | |
304 | * | |
305 | * So, for such devices we just record the property | |
306 | * raw in the child resources. | |
307 | */ | |
308 | for (i = 0; i < dev->num_addrs; i++) | |
309 | dev->resource[i].start = regs[i]; | |
310 | } else { | |
311 | for (i = 0; i < dev->num_addrs; i++) { | |
312 | int rnum = regs[i]; | |
313 | if (rnum >= dev->parent->num_addrs) { | |
314 | prom_printf("UGH: property for %s was %d, need < %d\n", | |
690c8fd3 DM |
315 | dp->name, len, dev->parent->num_addrs); |
316 | prom_halt(); | |
1da177e4 LT |
317 | } |
318 | dev->resource[i].start = dev->parent->resource[i].start; | |
319 | dev->resource[i].end = dev->parent->resource[i].end; | |
320 | dev->resource[i].flags = IORESOURCE_MEM; | |
690c8fd3 | 321 | dev->resource[i].name = dp->name; |
1da177e4 LT |
322 | } |
323 | } | |
324 | ||
2b1e5978 DM |
325 | op = of_find_device_by_node(dp); |
326 | if (!op) { | |
1da177e4 | 327 | dev->num_irqs = 0; |
2b1e5978 DM |
328 | } else { |
329 | dev->num_irqs = op->num_irqs; | |
330 | for (i = 0; i < dev->num_irqs; i++) | |
331 | dev->irqs[i] = op->irqs[i]; | |
332 | } | |
333 | ||
334 | if (!dev->num_irqs) { | |
1da177e4 LT |
335 | /* |
336 | * Oh, well, some PROMs don't export interrupts | |
337 | * property to children of EBus devices... | |
338 | * | |
339 | * Be smart about PS/2 keyboard and mouse. | |
340 | */ | |
690c8fd3 DM |
341 | if (!strcmp(dev->parent->prom_node->name, "8042")) { |
342 | if (!strcmp(dev->prom_node->name, "kb_ps2")) { | |
1da177e4 LT |
343 | dev->num_irqs = 1; |
344 | dev->irqs[0] = dev->parent->irqs[0]; | |
345 | } else { | |
346 | dev->num_irqs = 1; | |
347 | dev->irqs[0] = dev->parent->irqs[1]; | |
348 | } | |
349 | } | |
1da177e4 LT |
350 | } |
351 | } | |
352 | ||
353 | static int __init child_regs_nonstandard(struct linux_ebus_device *dev) | |
354 | { | |
690c8fd3 DM |
355 | if (!strcmp(dev->prom_node->name, "i2c") || |
356 | !strcmp(dev->prom_node->name, "SUNW,lombus")) | |
1da177e4 LT |
357 | return 1; |
358 | return 0; | |
359 | } | |
360 | ||
2b1e5978 | 361 | static void __init fill_ebus_device(struct device_node *dp, struct linux_ebus_device *dev) |
1da177e4 | 362 | { |
1da177e4 | 363 | struct linux_ebus_child *child; |
3d6e4702 | 364 | struct dev_archdata *sd; |
2b1e5978 DM |
365 | struct of_device *op; |
366 | int i, len; | |
1da177e4 | 367 | |
690c8fd3 | 368 | dev->prom_node = dp; |
1da177e4 | 369 | |
690c8fd3 DM |
370 | printk(" [%s", dp->name); |
371 | ||
2b1e5978 DM |
372 | op = of_find_device_by_node(dp); |
373 | if (!op) { | |
1da177e4 | 374 | dev->num_addrs = 0; |
1da177e4 LT |
375 | dev->num_irqs = 0; |
376 | } else { | |
9c908f97 DM |
377 | const int *regs = of_get_property(dp, "reg", &len); |
378 | ||
379 | if (!regs) | |
380 | len = 0; | |
2b1e5978 DM |
381 | dev->num_addrs = len / sizeof(struct linux_prom_registers); |
382 | ||
383 | for (i = 0; i < dev->num_addrs; i++) | |
384 | memcpy(&dev->resource[i], | |
385 | &op->resource[i], | |
386 | sizeof(struct resource)); | |
387 | ||
388 | dev->num_irqs = op->num_irqs; | |
389 | for (i = 0; i < dev->num_irqs; i++) | |
390 | dev->irqs[i] = op->irqs[i]; | |
1da177e4 LT |
391 | } |
392 | ||
3d6e4702 DM |
393 | sd = &dev->ofdev.dev.archdata; |
394 | sd->prom_node = dp; | |
395 | sd->op = &dev->ofdev; | |
ad7ad57c DM |
396 | sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu; |
397 | sd->stc = dev->bus->ofdev.dev.parent->archdata.stc; | |
c1b1a5f1 | 398 | sd->numa_node = dev->bus->ofdev.dev.parent->archdata.numa_node; |
3d6e4702 | 399 | |
a2bd4fd1 DM |
400 | dev->ofdev.node = dp; |
401 | dev->ofdev.dev.parent = &dev->bus->ofdev.dev; | |
402 | dev->ofdev.dev.bus = &ebus_bus_type; | |
2222c313 | 403 | dev_set_name(&dev->ofdev.dev, "ebus[%08x]", dp->node); |
a2bd4fd1 DM |
404 | |
405 | /* Register with core */ | |
406 | if (of_device_register(&dev->ofdev) != 0) | |
407 | printk(KERN_DEBUG "ebus: device registration error for %s!\n", | |
f5ef9d11 | 408 | dp->path_component_name); |
a2bd4fd1 | 409 | |
690c8fd3 DM |
410 | dp = dp->child; |
411 | if (dp) { | |
1da177e4 LT |
412 | printk(" ->"); |
413 | dev->children = ebus_alloc(sizeof(struct linux_ebus_child)); | |
414 | ||
415 | child = dev->children; | |
416 | child->next = NULL; | |
417 | child->parent = dev; | |
418 | child->bus = dev->bus; | |
2b1e5978 | 419 | fill_ebus_child(dp, child, |
690c8fd3 | 420 | child_regs_nonstandard(dev)); |
1da177e4 | 421 | |
690c8fd3 | 422 | while ((dp = dp->sibling) != NULL) { |
1da177e4 LT |
423 | child->next = ebus_alloc(sizeof(struct linux_ebus_child)); |
424 | ||
425 | child = child->next; | |
426 | child->next = NULL; | |
427 | child->parent = dev; | |
428 | child->bus = dev->bus; | |
2b1e5978 | 429 | fill_ebus_child(dp, child, |
690c8fd3 | 430 | child_regs_nonstandard(dev)); |
1da177e4 LT |
431 | } |
432 | } | |
433 | printk("]"); | |
434 | } | |
435 | ||
436 | static struct pci_dev *find_next_ebus(struct pci_dev *start, int *is_rio_p) | |
437 | { | |
438 | struct pci_dev *pdev = start; | |
439 | ||
d08fa1a2 JS |
440 | while ((pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_ANY_ID, pdev))) |
441 | if (pdev->device == PCI_DEVICE_ID_SUN_EBUS || | |
442 | pdev->device == PCI_DEVICE_ID_SUN_RIO_EBUS) | |
1da177e4 | 443 | break; |
1da177e4 | 444 | |
d08fa1a2 | 445 | *is_rio_p = !!(pdev && (pdev->device == PCI_DEVICE_ID_SUN_RIO_EBUS)); |
1da177e4 LT |
446 | |
447 | return pdev; | |
448 | } | |
449 | ||
450 | void __init ebus_init(void) | |
451 | { | |
1da177e4 LT |
452 | struct linux_ebus_device *dev; |
453 | struct linux_ebus *ebus; | |
454 | struct pci_dev *pdev; | |
690c8fd3 DM |
455 | struct device_node *dp; |
456 | int is_rio; | |
1da177e4 LT |
457 | int num_ebus = 0; |
458 | ||
459 | pdev = find_next_ebus(NULL, &is_rio); | |
460 | if (!pdev) { | |
461 | printk("ebus: No EBus's found.\n"); | |
462 | return; | |
463 | } | |
464 | ||
1327e9b6 | 465 | dp = pci_device_to_OF_node(pdev); |
1da177e4 LT |
466 | |
467 | ebus_chain = ebus = ebus_alloc(sizeof(struct linux_ebus)); | |
468 | ebus->next = NULL; | |
469 | ebus->is_rio = is_rio; | |
470 | ||
690c8fd3 DM |
471 | while (dp) { |
472 | struct device_node *child; | |
473 | ||
1da177e4 LT |
474 | /* SUNW,pci-qfe uses four empty ebuses on it. |
475 | I think we should not consider them here, | |
476 | as they have half of the properties this | |
477 | code expects and once we do PCI hot-plug, | |
478 | we'd have to tweak with the ebus_chain | |
479 | in the runtime after initialization. -jj */ | |
690c8fd3 | 480 | if (!dp->child) { |
1da177e4 LT |
481 | pdev = find_next_ebus(pdev, &is_rio); |
482 | if (!pdev) { | |
483 | if (ebus == ebus_chain) { | |
484 | ebus_chain = NULL; | |
485 | printk("ebus: No EBus's found.\n"); | |
486 | return; | |
487 | } | |
488 | break; | |
489 | } | |
490 | ebus->is_rio = is_rio; | |
1327e9b6 | 491 | dp = pci_device_to_OF_node(pdev); |
1da177e4 LT |
492 | continue; |
493 | } | |
494 | printk("ebus%d:", num_ebus); | |
495 | ||
1da177e4 | 496 | ebus->index = num_ebus; |
690c8fd3 | 497 | ebus->prom_node = dp; |
1da177e4 | 498 | ebus->self = pdev; |
1da177e4 | 499 | |
a2bd4fd1 DM |
500 | ebus->ofdev.node = dp; |
501 | ebus->ofdev.dev.parent = &pdev->dev; | |
502 | ebus->ofdev.dev.bus = &ebus_bus_type; | |
2222c313 | 503 | dev_set_name(&ebus->ofdev.dev, "ebus%d", num_ebus); |
a2bd4fd1 DM |
504 | |
505 | /* Register with core */ | |
506 | if (of_device_register(&ebus->ofdev) != 0) | |
507 | printk(KERN_DEBUG "ebus: device registration error for %s!\n", | |
f5ef9d11 | 508 | dp->path_component_name); |
a2bd4fd1 DM |
509 | |
510 | ||
690c8fd3 DM |
511 | child = dp->child; |
512 | if (!child) | |
1da177e4 LT |
513 | goto next_ebus; |
514 | ||
515 | ebus->devices = ebus_alloc(sizeof(struct linux_ebus_device)); | |
516 | ||
517 | dev = ebus->devices; | |
518 | dev->next = NULL; | |
519 | dev->children = NULL; | |
520 | dev->bus = ebus; | |
690c8fd3 | 521 | fill_ebus_device(child, dev); |
1da177e4 | 522 | |
690c8fd3 | 523 | while ((child = child->sibling) != NULL) { |
1da177e4 LT |
524 | dev->next = ebus_alloc(sizeof(struct linux_ebus_device)); |
525 | ||
526 | dev = dev->next; | |
527 | dev->next = NULL; | |
528 | dev->children = NULL; | |
529 | dev->bus = ebus; | |
690c8fd3 | 530 | fill_ebus_device(child, dev); |
1da177e4 LT |
531 | } |
532 | ||
533 | next_ebus: | |
534 | printk("\n"); | |
535 | ||
536 | pdev = find_next_ebus(pdev, &is_rio); | |
537 | if (!pdev) | |
538 | break; | |
539 | ||
1327e9b6 | 540 | dp = pci_device_to_OF_node(pdev); |
1da177e4 LT |
541 | |
542 | ebus->next = ebus_alloc(sizeof(struct linux_ebus)); | |
543 | ebus = ebus->next; | |
544 | ebus->next = NULL; | |
545 | ebus->is_rio = is_rio; | |
546 | ++num_ebus; | |
547 | } | |
d08fa1a2 | 548 | pci_dev_put(pdev); /* XXX for the case, when ebusnd is 0, is it OK? */ |
1da177e4 | 549 | } |