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authorDavid S. Miller <davem@davemloft.net>2008-08-30 03:36:11 -0400
committerDavid S. Miller <davem@davemloft.net>2008-08-30 03:36:11 -0400
commit356d164757310cd822d71da2027d50ec39798b7f (patch)
tree9a4f53bf8a27b66cf654a2fc751e0d23520ca330 /arch/sparc/kernel/ebus.c
parent75081322c9d0d56f8880178f9fcc93778bcf0220 (diff)
sparc: Kill EBUS driver layer.
All that remains is the EBUS DMA programming library for sparc64. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/ebus.c')
-rw-r--r--arch/sparc/kernel/ebus.c392
1 files changed, 0 insertions, 392 deletions
diff --git a/arch/sparc/kernel/ebus.c b/arch/sparc/kernel/ebus.c
deleted file mode 100644
index 7e9397fc608..00000000000
--- a/arch/sparc/kernel/ebus.c
+++ /dev/null
@@ -1,392 +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
24struct linux_ebus *ebus_chain = NULL;
25
26/* We are together with pcic.c under CONFIG_PCI. */
27extern unsigned int pcic_pin_to_irq(unsigned int, const char *name);
28
29/*
30 * IRQ Blacklist
31 * Here we list PROMs and systems that are known to supply crap as IRQ numbers.
32 */
33struct ebus_device_irq {
34 char *name;
35 unsigned int pin;
36};
37
38struct ebus_system_entry {
39 char *esname;
40 struct ebus_device_irq *ipt;
41};
42
43static struct ebus_device_irq je1_1[] = {
44 { "8042", 3 },
45 { "SUNW,CS4231", 0 },
46 { "parallel", 0 },
47 { "se", 2 },
48 { NULL, 0 }
49};
50
51/*
52 * Gleb's JE1 supplied reasonable pin numbers, but mine did not (OBP 2.32).
53 * Blacklist the sucker... Note that Gleb's system will work.
54 */
55static struct ebus_system_entry ebus_blacklist[] = {
56 { "SUNW,JavaEngine1", je1_1 },
57 { NULL, NULL }
58};
59
60static struct ebus_device_irq *ebus_blackp = NULL;
61
62/*
63 */
64static inline unsigned long ebus_alloc(size_t size)
65{
66 return (unsigned long)kmalloc(size, GFP_ATOMIC);
67}
68
69/*
70 */
71static int __init ebus_blacklist_irq(const char *name)
72{
73 struct ebus_device_irq *dp;
74
75 if ((dp = ebus_blackp) != NULL) {
76 for (; dp->name != NULL; dp++) {
77 if (strcmp(name, dp->name) == 0) {
78 return pcic_pin_to_irq(dp->pin, name);
79 }
80 }
81 }
82 return 0;
83}
84
85static void __init fill_ebus_child(struct device_node *dp,
86 struct linux_ebus_child *dev)
87{
88 const int *regs;
89 const int *irqs;
90 int i, len;
91
92 dev->prom_node = dp;
93 regs = of_get_property(dp, "reg", &len);
94 if (!regs)
95 len = 0;
96 dev->num_addrs = len / sizeof(regs[0]);
97
98 for (i = 0; i < dev->num_addrs; i++) {
99 if (regs[i] >= dev->parent->num_addrs) {
100 prom_printf("UGH: property for %s was %d, need < %d\n",
101 dev->prom_node->name, len,
102 dev->parent->num_addrs);
103 panic(__func__);
104 }
105
106 /* XXX resource */
107 dev->resource[i].start =
108 dev->parent->resource[regs[i]].start;
109 }
110
111 for (i = 0; i < PROMINTR_MAX; i++)
112 dev->irqs[i] = PCI_IRQ_NONE;
113
114 if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
115 dev->num_irqs = 1;
116 } else {
117 irqs = of_get_property(dp, "interrupts", &len);
118 if (!irqs) {
119 dev->num_irqs = 0;
120 dev->irqs[0] = 0;
121 if (dev->parent->num_irqs != 0) {
122 dev->num_irqs = 1;
123 dev->irqs[0] = dev->parent->irqs[0];
124 }
125 } else {
126 dev->num_irqs = len / sizeof(irqs[0]);
127 if (irqs[0] == 0 || irqs[0] >= 8) {
128 /*
129 * XXX Zero is a valid pin number...
130 * This works as long as Ebus is not wired
131 * to INTA#.
132 */
133 printk("EBUS: %s got bad irq %d from PROM\n",
134 dev->prom_node->name, irqs[0]);
135 dev->num_irqs = 0;
136 dev->irqs[0] = 0;
137 } else {
138 dev->irqs[0] =
139 pcic_pin_to_irq(irqs[0],
140 dev->prom_node->name);
141 }
142 }
143 }
144}
145
146static void __init fill_ebus_device(struct device_node *dp,
147 struct linux_ebus_device *dev)
148{
149 const struct linux_prom_registers *regs;
150 struct linux_ebus_child *child;
151 struct dev_archdata *sd;
152 const int *irqs;
153 int i, n, len;
154 unsigned long baseaddr;
155
156 dev->prom_node = dp;
157
158 regs = of_get_property(dp, "reg", &len);
159 if (!regs)
160 len = 0;
161 if (len % sizeof(struct linux_prom_registers)) {
162 prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",
163 dev->prom_node->name, len,
164 (int)sizeof(struct linux_prom_registers));
165 panic(__func__);
166 }
167 dev->num_addrs = len / sizeof(struct linux_prom_registers);
168
169 for (i = 0; i < dev->num_addrs; i++) {
170 /*
171 * XXX Collect JE-1 PROM
172 *
173 * Example - JS-E with 3.11:
174 * /ebus
175 * regs
176 * 0x00000000, 0x0, 0x00000000, 0x0, 0x00000000,
177 * 0x82000010, 0x0, 0xf0000000, 0x0, 0x01000000,
178 * 0x82000014, 0x0, 0x38800000, 0x0, 0x00800000,
179 * ranges
180 * 0x00, 0x00000000, 0x02000010, 0x0, 0x0, 0x01000000,
181 * 0x01, 0x01000000, 0x02000014, 0x0, 0x0, 0x00800000,
182 * /ebus/8042
183 * regs
184 * 0x00000001, 0x00300060, 0x00000008,
185 * 0x00000001, 0x00300060, 0x00000008,
186 */
187 n = regs[i].which_io;
188 if (n >= 4) {
189 /* XXX This is copied from old JE-1 by Gleb. */
190 n = (regs[i].which_io - 0x10) >> 2;
191 } else {
192 ;
193 }
194
195/*
196 * XXX Now as we have regions, why don't we make an on-demand allocation...
197 */
198 dev->resource[i].start = 0;
199 if ((baseaddr = dev->bus->self->resource[n].start +
200 regs[i].phys_addr) != 0) {
201 /* dev->resource[i].name = dev->prom_name; */
202 if ((baseaddr = (unsigned long) ioremap(baseaddr,
203 regs[i].reg_size)) == 0) {
204 panic("ebus: unable to remap dev %s",
205 dev->prom_node->name);
206 }
207 }
208 dev->resource[i].start = baseaddr; /* XXX Unaligned */
209 }
210
211 for (i = 0; i < PROMINTR_MAX; i++)
212 dev->irqs[i] = PCI_IRQ_NONE;
213
214 if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
215 dev->num_irqs = 1;
216 } else {
217 irqs = of_get_property(dp, "interrupts", &len);
218 if (!irqs) {
219 dev->num_irqs = 0;
220 if ((dev->irqs[0] = dev->bus->self->irq) != 0) {
221 dev->num_irqs = 1;
222/* P3 */ /* printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */
223 }
224 } else {
225 dev->num_irqs = 1; /* dev->num_irqs = len / sizeof(irqs[0]); */
226 if (irqs[0] == 0 || irqs[0] >= 8) {
227 /* See above for the parent. XXX */
228 printk("EBUS: %s got bad irq %d from PROM\n",
229 dev->prom_node->name, irqs[0]);
230 dev->num_irqs = 0;
231 dev->irqs[0] = 0;
232 } else {
233 dev->irqs[0] =
234 pcic_pin_to_irq(irqs[0],
235 dev->prom_node->name);
236 }
237 }
238 }
239
240 sd = &dev->ofdev.dev.archdata;
241 sd->prom_node = dp;
242 sd->op = &dev->ofdev;
243 sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu;
244
245 dev->ofdev.node = dp;
246 dev->ofdev.dev.parent = &dev->bus->ofdev.dev;
247 dev->ofdev.dev.bus = &ebus_bus_type;
248 sprintf(dev->ofdev.dev.bus_id, "ebus[%08x]", dp->node);
249
250 /* Register with core */
251 if (of_device_register(&dev->ofdev) != 0)
252 printk(KERN_DEBUG "ebus: device registration error for %s!\n",
253 dp->path_component_name);
254
255 if ((dp = dp->child) != NULL) {
256 dev->children = (struct linux_ebus_child *)
257 ebus_alloc(sizeof(struct linux_ebus_child));
258
259 child = dev->children;
260 child->next = NULL;
261 child->parent = dev;
262 child->bus = dev->bus;
263 fill_ebus_child(dp, child);
264
265 while ((dp = dp->sibling) != NULL) {
266 child->next = (struct linux_ebus_child *)
267 ebus_alloc(sizeof(struct linux_ebus_child));
268
269 child = child->next;
270 child->next = NULL;
271 child->parent = dev;
272 child->bus = dev->bus;
273 fill_ebus_child(dp, child);
274 }
275 }
276}
277
278void __init ebus_init(void)
279{
280 const struct linux_prom_pci_registers *regs;
281 struct linux_pbm_info *pbm;
282 struct linux_ebus_device *dev;
283 struct linux_ebus *ebus;
284 struct ebus_system_entry *sp;
285 struct pci_dev *pdev;
286 struct pcidev_cookie *cookie;
287 struct device_node *dp;
288 struct resource *p;
289 unsigned short pci_command;
290 int len, reg, nreg;
291 int num_ebus = 0;
292
293 dp = of_find_node_by_path("/");
294 for (sp = ebus_blacklist; sp->esname != NULL; sp++) {
295 if (strcmp(dp->name, sp->esname) == 0) {
296 ebus_blackp = sp->ipt;
297 break;
298 }
299 }
300
301 pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);
302 if (!pdev)
303 return;
304
305 cookie = pdev->sysdata;
306 dp = cookie->prom_node;
307
308 ebus_chain = ebus = (struct linux_ebus *)
309 ebus_alloc(sizeof(struct linux_ebus));
310 ebus->next = NULL;
311
312 while (dp) {
313 struct device_node *nd;
314
315 ebus->prom_node = dp;
316 ebus->self = pdev;
317 ebus->parent = pbm = cookie->pbm;
318
319 /* Enable BUS Master. */
320 pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
321 pci_command |= PCI_COMMAND_MASTER;
322 pci_write_config_word(pdev, PCI_COMMAND, pci_command);
323
324 regs = of_get_property(dp, "reg", &len);
325 if (!regs) {
326 prom_printf("%s: can't find reg property\n",
327 __func__);
328 prom_halt();
329 }
330 nreg = len / sizeof(struct linux_prom_pci_registers);
331
332 p = &ebus->self->resource[0];
333 for (reg = 0; reg < nreg; reg++) {
334 if (!(regs[reg].which_io & 0x03000000))
335 continue;
336
337 (p++)->start = regs[reg].phys_lo;
338 }
339
340 ebus->ofdev.node = dp;
341 ebus->ofdev.dev.parent = &pdev->dev;
342 ebus->ofdev.dev.bus = &ebus_bus_type;
343 sprintf(ebus->ofdev.dev.bus_id, "ebus%d", num_ebus);
344
345 /* Register with core */
346 if (of_device_register(&ebus->ofdev) != 0)
347 printk(KERN_DEBUG "ebus: device registration error for %s!\n",
348 dp->path_component_name);
349
350
351 nd = dp->child;
352 if (!nd)
353 goto next_ebus;
354
355 ebus->devices = (struct linux_ebus_device *)
356 ebus_alloc(sizeof(struct linux_ebus_device));
357
358 dev = ebus->devices;
359 dev->next = NULL;
360 dev->children = NULL;
361 dev->bus = ebus;
362 fill_ebus_device(nd, dev);
363
364 while ((nd = nd->sibling) != NULL) {
365 dev->next = (struct linux_ebus_device *)
366 ebus_alloc(sizeof(struct linux_ebus_device));
367
368 dev = dev->next;
369 dev->next = NULL;
370 dev->children = NULL;
371 dev->bus = ebus;
372 fill_ebus_device(nd, dev);
373 }
374
375 next_ebus:
376 pdev = pci_get_device(PCI_VENDOR_ID_SUN,
377 PCI_DEVICE_ID_SUN_EBUS, pdev);
378 if (!pdev)
379 break;
380
381 cookie = pdev->sysdata;
382 dp = cookie->prom_node;
383
384 ebus->next = (struct linux_ebus *)
385 ebus_alloc(sizeof(struct linux_ebus));
386 ebus = ebus->next;
387 ebus->next = NULL;
388 ++num_ebus;
389 }
390 if (pdev)
391 pci_dev_put(pdev);
392}
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