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9#include <asm/sn/types.h>
10#include <asm/sn/addrs.h>
11#include <asm/sn/io.h>
12#include <asm/sn/module.h>
13#include <asm/sn/intr.h>
14#include <asm/sn/pcibus_provider_defs.h>
15#include <asm/sn/pcidev.h>
16#include <asm/sn/sn_sal.h>
17#include "xtalk/hubdev.h"
18
19
20
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22
23
24
25static int max_segment_number;
26static int max_pcibus_number = 255;
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28
29
30
31
32static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
33{
34 struct ia64_sal_retval ret_stuff;
35 ret_stuff.status = 0;
36 ret_stuff.v0 = 0;
37
38 SAL_CALL_NOLOCK(ret_stuff,
39 (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
40 (u64) handle, (u64) address, 0, 0, 0, 0, 0);
41 return ret_stuff.v0;
42}
43
44
45
46
47static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
48{
49 struct ia64_sal_retval ret_stuff;
50 ret_stuff.status = 0;
51 ret_stuff.v0 = 0;
52
53 SAL_CALL_NOLOCK(ret_stuff,
54 (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
55 (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
56 return ret_stuff.v0;
57}
58
59
60
61
62static inline u64
63sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
64 u64 sn_irq_info)
65{
66 struct ia64_sal_retval ret_stuff;
67 ret_stuff.status = 0;
68 ret_stuff.v0 = 0;
69
70 SAL_CALL_NOLOCK(ret_stuff,
71 (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
72 (u64) segment, (u64) bus_number, (u64) devfn,
73 (u64) pci_dev,
74 sn_irq_info, 0, 0);
75 return ret_stuff.v0;
76}
77
78
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81
82
83
84static void __init sn_fixup_ionodes(void)
85{
86
87 struct hubdev_info *hubdev;
88 u64 status;
89 u64 nasid;
90 int i;
91 extern void sn_common_hubdev_init(struct hubdev_info *);
92
93
94
95
96
97 for (i = 0; i < num_cnodes; i++) {
98 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
99 nasid = cnodeid_to_nasid(i);
100 hubdev->max_segment_number = 0xffffffff;
101 hubdev->max_pcibus_number = 0xff;
102 status = sal_get_hubdev_info(nasid, (u64) __pa(hubdev));
103 if (status)
104 continue;
105
106
107 if (hubdev->max_segment_number) {
108
109
110
111 max_segment_number = hubdev->max_segment_number;
112 max_pcibus_number = hubdev->max_pcibus_number;
113 }
114 sn_common_hubdev_init(hubdev);
115 }
116}
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120
121
122
123
124
125static void
126sn_legacy_pci_window_fixup(struct pci_controller *controller,
127 u64 legacy_io, u64 legacy_mem)
128{
129 controller->window = kcalloc(2, sizeof(struct pci_window),
130 GFP_KERNEL);
131 BUG_ON(controller->window == NULL);
132 controller->window[0].offset = legacy_io;
133 controller->window[0].resource.name = "legacy_io";
134 controller->window[0].resource.flags = IORESOURCE_IO;
135 controller->window[0].resource.start = legacy_io;
136 controller->window[0].resource.end =
137 controller->window[0].resource.start + 0xffff;
138 controller->window[0].resource.parent = &ioport_resource;
139 controller->window[1].offset = legacy_mem;
140 controller->window[1].resource.name = "legacy_mem";
141 controller->window[1].resource.flags = IORESOURCE_MEM;
142 controller->window[1].resource.start = legacy_mem;
143 controller->window[1].resource.end =
144 controller->window[1].resource.start + (1024 * 1024) - 1;
145 controller->window[1].resource.parent = &iomem_resource;
146 controller->windows = 2;
147}
148
149
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151
152
153
154
155static void
156sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
157 s64 * pci_addrs)
158{
159 struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
160 unsigned int i;
161 unsigned int idx;
162 unsigned int new_count;
163 struct pci_window *new_window;
164
165 if (count == 0)
166 return;
167 idx = controller->windows;
168 new_count = controller->windows + count;
169 new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
170 BUG_ON(new_window == NULL);
171 if (controller->window) {
172 memcpy(new_window, controller->window,
173 sizeof(struct pci_window) * controller->windows);
174 kfree(controller->window);
175 }
176
177
178 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
179 if (pci_addrs[i] == -1)
180 continue;
181
182 new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
183 new_window[idx].resource = dev->resource[i];
184 idx++;
185 }
186
187 controller->windows = new_count;
188 controller->window = new_window;
189}
190
191
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193
194
195
196
197void
198sn_io_slot_fixup(struct pci_dev *dev)
199{
200 unsigned int count = 0;
201 int idx;
202 s64 pci_addrs[PCI_ROM_RESOURCE + 1];
203 unsigned long addr, end, size, start;
204 struct pcidev_info *pcidev_info;
205 struct sn_irq_info *sn_irq_info;
206 int status;
207
208 pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
209 if (!pcidev_info)
210 panic("%s: Unable to alloc memory for pcidev_info", __func__);
211
212 sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
213 if (!sn_irq_info)
214 panic("%s: Unable to alloc memory for sn_irq_info", __func__);
215
216
217 status = sal_get_pcidev_info((u64) pci_domain_nr(dev),
218 (u64) dev->bus->number,
219 dev->devfn,
220 (u64) __pa(pcidev_info),
221 (u64) __pa(sn_irq_info));
222
223 BUG_ON(status);
224
225
226
227 for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
228
229 if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
230 pci_addrs[idx] = -1;
231 continue;
232 }
233
234 start = dev->resource[idx].start;
235 end = dev->resource[idx].end;
236 size = end - start;
237 if (size == 0) {
238 pci_addrs[idx] = -1;
239 continue;
240 }
241 pci_addrs[idx] = start;
242 count++;
243 addr = pcidev_info->pdi_pio_mapped_addr[idx];
244 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
245 dev->resource[idx].start = addr;
246 dev->resource[idx].end = addr + size;
247
248
249
250
251
252 if (dev->resource[idx].parent && dev->resource[idx].parent->child)
253 release_resource(&dev->resource[idx]);
254
255 if (dev->resource[idx].flags & IORESOURCE_IO)
256 insert_resource(&ioport_resource, &dev->resource[idx]);
257 else
258 insert_resource(&iomem_resource, &dev->resource[idx]);
259
260
261
262
263 if (idx == PCI_ROM_RESOURCE) {
264 size_t image_size;
265 void __iomem *rom;
266
267 rom = ioremap(pci_resource_start(dev, PCI_ROM_RESOURCE),
268 size + 1);
269 image_size = pci_get_rom_size(dev, rom, size + 1);
270 dev->resource[PCI_ROM_RESOURCE].end =
271 dev->resource[PCI_ROM_RESOURCE].start +
272 image_size - 1;
273 dev->resource[PCI_ROM_RESOURCE].flags |=
274 IORESOURCE_ROM_BIOS_COPY;
275 }
276 }
277
278
279
280 if (count > 0)
281 sn_pci_window_fixup(dev, count, pci_addrs);
282
283 sn_pci_fixup_slot(dev, pcidev_info, sn_irq_info);
284}
285
286EXPORT_SYMBOL(sn_io_slot_fixup);
287
288
289
290
291
292static void __init
293sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
294{
295 s64 status = 0;
296 struct pci_controller *controller;
297 struct pcibus_bussoft *prom_bussoft_ptr;
298
299
300 status = sal_get_pcibus_info((u64) segment, (u64) busnum,
301 (u64) ia64_tpa(&prom_bussoft_ptr));
302 if (status > 0)
303 return;
304 prom_bussoft_ptr = __va(prom_bussoft_ptr);
305
306 controller = kzalloc(sizeof(*controller), GFP_KERNEL);
307 BUG_ON(!controller);
308 controller->segment = segment;
309
310
311
312
313
314 controller->platform_data = prom_bussoft_ptr;
315
316 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
317 if (bus == NULL)
318 goto error_return;
319
320 bus->sysdata = controller;
321
322 return;
323
324error_return:
325
326 kfree(controller);
327 return;
328}
329
330
331
332
333void
334sn_bus_fixup(struct pci_bus *bus)
335{
336 struct pci_dev *pci_dev = NULL;
337 struct pcibus_bussoft *prom_bussoft_ptr;
338
339 if (!bus->parent) {
340 prom_bussoft_ptr = PCI_CONTROLLER(bus)->platform_data;
341 if (prom_bussoft_ptr == NULL) {
342 printk(KERN_ERR
343 "sn_bus_fixup: 0x%04x:0x%02x Unable to "
344 "obtain prom_bussoft_ptr\n",
345 pci_domain_nr(bus), bus->number);
346 return;
347 }
348 sn_common_bus_fixup(bus, prom_bussoft_ptr);
349 sn_legacy_pci_window_fixup(PCI_CONTROLLER(bus),
350 prom_bussoft_ptr->bs_legacy_io,
351 prom_bussoft_ptr->bs_legacy_mem);
352 }
353 list_for_each_entry(pci_dev, &bus->devices, bus_list) {
354 sn_io_slot_fixup(pci_dev);
355 }
356
357}
358
359
360
361
362
363
364
365void __init sn_io_init(void)
366{
367 int i, j;
368
369 sn_fixup_ionodes();
370
371
372 for (i = 0; i <= max_segment_number; i++)
373 for (j = 0; j <= max_pcibus_number; j++)
374 sn_pci_controller_fixup(i, j, NULL);
375}
376