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-rw-r--r--arch/sparc/kernel/ebus.c393
1 files changed, 0 insertions, 393 deletions
diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c
deleted file mode 100644
index 97294232259c..000000000000
--- a/arch/sparc/kernel/ebus.c
+++ /dev/null
@@ -1,393 +0,0 @@
1/*
2 * ebus.c: PCI to EBus bridge device.
3 *
4 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
5 *
6 * Adopted for sparc by V. Roganov and G. Raiko.
7 * Fixes for different platforms by Pete Zaitcev.
8 */
9
10#include <linux/kernel.h>
11#include <linux/types.h>
12#include <linux/init.h>
13#include <linux/slab.h>
14#include <linux/string.h>
15
16#include <asm/system.h>
17#include <asm/page.h>
18#include <asm/pbm.h>
19#include <asm/ebus.h>
20#include <asm/io.h>
21#include <asm/oplib.h>
22#include <asm/prom.h>
23#include <asm/bpp.h>
24
25struct linux_ebus *ebus_chain = NULL;
26
27/* We are together with pcic.c under CONFIG_PCI. */
28extern unsigned int pcic_pin_to_irq(unsigned int, const char *name);
29
30/*
31 * IRQ Blacklist
32 * Here we list PROMs and systems that are known to supply crap as IRQ numbers.
33 */
34struct ebus_device_irq {
35 char *name;
36 unsigned int pin;
37};
38
39struct ebus_system_entry {
40 char *esname;
41 struct ebus_device_irq *ipt;
42};
43
44static struct ebus_device_irq je1_1[] = {
45 { "8042", 3 },
46 { "SUNW,CS4231", 0 },
47 { "parallel", 0 },
48 { "se", 2 },
49 { NULL, 0 }
50};
51
52/*
53 * Gleb's JE1 supplied reasonable pin numbers, but mine did not (OBP 2.32).
54 * Blacklist the sucker... Note that Gleb's system will work.
55 */
56static struct ebus_system_entry ebus_blacklist[] = {
57 { "SUNW,JavaEngine1", je1_1 },
58 { NULL, NULL }
59};
60
61static struct ebus_device_irq *ebus_blackp = NULL;
62
63/*
64 */
65static inline unsigned long ebus_alloc(size_t size)
66{
67 return (unsigned long)kmalloc(size, GFP_ATOMIC);
68}
69
70/*
71 */
72static int __init ebus_blacklist_irq(const char *name)
73{
74 struct ebus_device_irq *dp;
75
76 if ((dp = ebus_blackp) != NULL) {
77 for (; dp->name != NULL; dp++) {
78 if (strcmp(name, dp->name) == 0) {
79 return pcic_pin_to_irq(dp->pin, name);
80 }
81 }
82 }
83 return 0;
84}
85
86static void __init fill_ebus_child(struct device_node *dp,
87 struct linux_ebus_child *dev)
88{
89 const int *regs;
90 const int *irqs;
91 int i, len;
92
93 dev->prom_node = dp;
94 regs = of_get_property(dp, "reg", &len);
95 if (!regs)
96 len = 0;
97 dev->num_addrs = len / sizeof(regs[0]);
98
99 for (i = 0; i < dev->num_addrs; i++) {
100 if (regs[i] >= dev->parent->num_addrs) {
101 prom_printf("UGH: property for %s was %d, need < %d\n",
102 dev->prom_node->name, len,
103 dev->parent->num_addrs);
104 panic(__func__);
105 }
106
107 /* XXX resource */
108 dev->resource[i].start =
109 dev->parent->resource[regs[i]].start;
110 }
111
112 for (i = 0; i < PROMINTR_MAX; i++)
113 dev->irqs[i] = PCI_IRQ_NONE;
114
115 if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
116 dev->num_irqs = 1;
117 } else {
118 irqs = of_get_property(dp, "interrupts", &len);
119 if (!irqs) {
120 dev->num_irqs = 0;
121 dev->irqs[0] = 0;
122 if (dev->parent->num_irqs != 0) {
123 dev->num_irqs = 1;
124 dev->irqs[0] = dev->parent->irqs[0];
125 }
126 } else {
127 dev->num_irqs = len / sizeof(irqs[0]);
128 if (irqs[0] == 0 || irqs[0] >= 8) {
129 /*
130 * XXX Zero is a valid pin number...
131 * This works as long as Ebus is not wired
132 * to INTA#.
133 */
134 printk("EBUS: %s got bad irq %d from PROM\n",
135 dev->prom_node->name, irqs[0]);
136 dev->num_irqs = 0;
137 dev->irqs[0] = 0;
138 } else {
139 dev->irqs[0] =
140 pcic_pin_to_irq(irqs[0],
141 dev->prom_node->name);
142 }
143 }
144 }
145}
146
147static void __init fill_ebus_device(struct device_node *dp,
148 struct linux_ebus_device *dev)
149{
150 const struct linux_prom_registers *regs;
151 struct linux_ebus_child *child;
152 struct dev_archdata *sd;
153 const int *irqs;
154 int i, n, len;
155 unsigned long baseaddr;
156
157 dev->prom_node = dp;
158
159 regs = of_get_property(dp, "reg", &len);
160 if (!regs)
161 len = 0;
162 if (len % sizeof(struct linux_prom_registers)) {
163 prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",
164 dev->prom_node->name, len,
165 (int)sizeof(struct linux_prom_registers));
166 panic(__func__);
167 }
168 dev->num_addrs = len / sizeof(struct linux_prom_registers);
169
170 for (i = 0; i < dev->num_addrs; i++) {
171 /*
172 * XXX Collect JE-1 PROM
173 *
174 * Example - JS-E with 3.11:
175 * /ebus
176 * regs
177 * 0x00000000, 0x0, 0x00000000, 0x0, 0x00000000,
178 * 0x82000010, 0x0, 0xf0000000, 0x0, 0x01000000,
179 * 0x82000014, 0x0, 0x38800000, 0x0, 0x00800000,
180 * ranges
181 * 0x00, 0x00000000, 0x02000010, 0x0, 0x0, 0x01000000,
182 * 0x01, 0x01000000, 0x02000014, 0x0, 0x0, 0x00800000,
183 * /ebus/8042
184 * regs
185 * 0x00000001, 0x00300060, 0x00000008,
186 * 0x00000001, 0x00300060, 0x00000008,
187 */
188 n = regs[i].which_io;
189 if (n >= 4) {
190 /* XXX This is copied from old JE-1 by Gleb. */
191 n = (regs[i].which_io - 0x10) >> 2;
192 } else {
193 ;
194 }
195
196/*
197 * XXX Now as we have regions, why don't we make an on-demand allocation...
198 */
199 dev->resource[i].start = 0;
200 if ((baseaddr = dev->bus->self->resource[n].start +
201 regs[i].phys_addr) != 0) {
202 /* dev->resource[i].name = dev->prom_name; */
203 if ((baseaddr = (unsigned long) ioremap(baseaddr,
204 regs[i].reg_size)) == 0) {
205 panic("ebus: unable to remap dev %s",
206 dev->prom_node->name);
207 }
208 }
209 dev->resource[i].start = baseaddr; /* XXX Unaligned */
210 }
211
212 for (i = 0; i < PROMINTR_MAX; i++)
213 dev->irqs[i] = PCI_IRQ_NONE;
214
215 if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
216 dev->num_irqs = 1;
217 } else {
218 irqs = of_get_property(dp, "interrupts", &len);
219 if (!irqs) {
220 dev->num_irqs = 0;
221 if ((dev->irqs[0] = dev->bus->self->irq) != 0) {
222 dev->num_irqs = 1;
223/* P3 */ /* printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */
224 }
225 } else {
226 dev->num_irqs = 1; /* dev->num_irqs = len / sizeof(irqs[0]); */
227 if (irqs[0] == 0 || irqs[0] >= 8) {
228 /* See above for the parent. XXX */
229 printk("EBUS: %s got bad irq %d from PROM\n",
230 dev->prom_node->name, irqs[0]);
231 dev->num_irqs = 0;
232 dev->irqs[0] = 0;
233 } else {
234 dev->irqs[0] =
235 pcic_pin_to_irq(irqs[0],
236 dev->prom_node->name);
237 }
238 }
239 }
240
241 sd = &dev->ofdev.dev.archdata;
242 sd->prom_node = dp;
243 sd->op = &dev->ofdev;
244 sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu;
245
246 dev->ofdev.node = dp;
247 dev->ofdev.dev.parent = &dev->bus->ofdev.dev;
248 dev->ofdev.dev.bus = &ebus_bus_type;
249 sprintf(dev->ofdev.dev.bus_id, "ebus[%08x]", dp->node);
250
251 /* Register with core */
252 if (of_device_register(&dev->ofdev) != 0)
253 printk(KERN_DEBUG "ebus: device registration error for %s!\n",
254 dp->path_component_name);
255
256 if ((dp = dp->child) != NULL) {
257 dev->children = (struct linux_ebus_child *)
258 ebus_alloc(sizeof(struct linux_ebus_child));
259
260 child = dev->children;
261 child->next = NULL;
262 child->parent = dev;
263 child->bus = dev->bus;
264 fill_ebus_child(dp, child);
265
266 while ((dp = dp->sibling) != NULL) {
267 child->next = (struct linux_ebus_child *)
268 ebus_alloc(sizeof(struct linux_ebus_child));
269
270 child = child->next;
271 child->next = NULL;
272 child->parent = dev;
273 child->bus = dev->bus;
274 fill_ebus_child(dp, child);
275 }
276 }
277}
278
279void __init ebus_init(void)
280{
281 const struct linux_prom_pci_registers *regs;
282 struct linux_pbm_info *pbm;
283 struct linux_ebus_device *dev;
284 struct linux_ebus *ebus;
285 struct ebus_system_entry *sp;
286 struct pci_dev *pdev;
287 struct pcidev_cookie *cookie;
288 struct device_node *dp;
289 struct resource *p;
290 unsigned short pci_command;
291 int len, reg, nreg;
292 int num_ebus = 0;
293
294 dp = of_find_node_by_path("/");
295 for (sp = ebus_blacklist; sp->esname != NULL; sp++) {
296 if (strcmp(dp->name, sp->esname) == 0) {
297 ebus_blackp = sp->ipt;
298 break;
299 }
300 }
301
302 pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);
303 if (!pdev)
304 return;
305
306 cookie = pdev->sysdata;
307 dp = cookie->prom_node;
308
309 ebus_chain = ebus = (struct linux_ebus *)
310 ebus_alloc(sizeof(struct linux_ebus));
311 ebus->next = NULL;
312
313 while (dp) {
314 struct device_node *nd;
315
316 ebus->prom_node = dp;
317 ebus->self = pdev;
318 ebus->parent = pbm = cookie->pbm;
319
320 /* Enable BUS Master. */
321 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
322 pci_command |= PCI_COMMAND_MASTER;
323 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
324
325 regs = of_get_property(dp, "reg", &len);
326 if (!regs) {
327 prom_printf("%s: can't find reg property\n",
328 __func__);
329 prom_halt();
330 }
331 nreg = len / sizeof(struct linux_prom_pci_registers);
332
333 p = &ebus->self->resource[0];
334 for (reg = 0; reg < nreg; reg++) {
335 if (!(regs[reg].which_io & 0x03000000))
336 continue;
337
338 (p++)->start = regs[reg].phys_lo;
339 }
340
341 ebus->ofdev.node = dp;
342 ebus->ofdev.dev.parent = &pdev->dev;
343 ebus->ofdev.dev.bus = &ebus_bus_type;
344 sprintf(ebus->ofdev.dev.bus_id, "ebus%d", num_ebus);
345
346 /* Register with core */
347 if (of_device_register(&ebus->ofdev) != 0)
348 printk(KERN_DEBUG "ebus: device registration error for %s!\n",
349 dp->path_component_name);
350
351
352 nd = dp->child;
353 if (!nd)
354 goto next_ebus;
355
356 ebus->devices = (struct linux_ebus_device *)
357 ebus_alloc(sizeof(struct linux_ebus_device));
358
359 dev = ebus->devices;
360 dev->next = NULL;
361 dev->children = NULL;
362 dev->bus = ebus;
363 fill_ebus_device(nd, dev);
364
365 while ((nd = nd->sibling) != NULL) {
366 dev->next = (struct linux_ebus_device *)
367 ebus_alloc(sizeof(struct linux_ebus_device));
368
369 dev = dev->next;
370 dev->next = NULL;
371 dev->children = NULL;
372 dev->bus = ebus;
373 fill_ebus_device(nd, dev);
374 }
375
376 next_ebus:
377 pdev = pci_get_device(PCI_VENDOR_ID_SUN,
378 PCI_DEVICE_ID_SUN_EBUS, pdev);
379 if (!pdev)
380 break;
381
382 cookie = pdev->sysdata;
383 dp = cookie->prom_node;
384
385 ebus->next = (struct linux_ebus *)
386 ebus_alloc(sizeof(struct linux_ebus));
387 ebus = ebus->next;
388 ebus->next = NULL;
389 ++num_ebus;
390 }
391 if (pdev)
392 pci_dev_put(pdev);
393}
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