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-rw-r--r--arch/microblaze/pci/Makefile2
-rw-r--r--arch/microblaze/pci/pci-common.c112
-rw-r--r--arch/microblaze/pci/pci_32.c432
3 files changed, 113 insertions, 433 deletions
diff --git a/arch/microblaze/pci/Makefile b/arch/microblaze/pci/Makefile
index 9889cc2e1294..d1114fbd4780 100644
--- a/arch/microblaze/pci/Makefile
+++ b/arch/microblaze/pci/Makefile
@@ -2,5 +2,5 @@
2# Makefile 2# Makefile
3# 3#
4 4
5obj-$(CONFIG_PCI) += pci_32.o pci-common.o indirect_pci.o iomap.o 5obj-$(CONFIG_PCI) += pci-common.o indirect_pci.o iomap.o
6obj-$(CONFIG_PCI_XILINX) += xilinx_pci.o 6obj-$(CONFIG_PCI_XILINX) += xilinx_pci.o
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 53599067d2f9..041b1d86d75b 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -50,6 +50,11 @@ unsigned int pci_flags;
50 50
51static struct dma_map_ops *pci_dma_ops = &dma_direct_ops; 51static struct dma_map_ops *pci_dma_ops = &dma_direct_ops;
52 52
53unsigned long isa_io_base;
54unsigned long pci_dram_offset;
55static int pci_bus_count;
56
57
53void set_pci_dma_ops(struct dma_map_ops *dma_ops) 58void set_pci_dma_ops(struct dma_map_ops *dma_ops)
54{ 59{
55 pci_dma_ops = dma_ops; 60 pci_dma_ops = dma_ops;
@@ -1558,6 +1563,112 @@ void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
1558 (unsigned long)hose->io_base_virt - _IO_BASE); 1563 (unsigned long)hose->io_base_virt - _IO_BASE);
1559} 1564}
1560 1565
1566struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
1567{
1568 struct pci_controller *hose = bus->sysdata;
1569
1570 return of_node_get(hose->dn);
1571}
1572
1573static void __devinit pcibios_scan_phb(struct pci_controller *hose)
1574{
1575 struct pci_bus *bus;
1576 struct device_node *node = hose->dn;
1577 unsigned long io_offset;
1578 struct resource *res = &hose->io_resource;
1579
1580 pr_debug("PCI: Scanning PHB %s\n",
1581 node ? node->full_name : "<NO NAME>");
1582
1583 /* Create an empty bus for the toplevel */
1584 bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose);
1585 if (bus == NULL) {
1586 printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
1587 hose->global_number);
1588 return;
1589 }
1590 bus->secondary = hose->first_busno;
1591 hose->bus = bus;
1592
1593 /* Fixup IO space offset */
1594 io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
1595 res->start = (res->start + io_offset) & 0xffffffffu;
1596 res->end = (res->end + io_offset) & 0xffffffffu;
1597
1598 /* Wire up PHB bus resources */
1599 pcibios_setup_phb_resources(hose);
1600
1601 /* Scan children */
1602 hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
1603}
1604
1605static int __init pcibios_init(void)
1606{
1607 struct pci_controller *hose, *tmp;
1608 int next_busno = 0;
1609
1610 printk(KERN_INFO "PCI: Probing PCI hardware\n");
1611
1612 /* Scan all of the recorded PCI controllers. */
1613 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
1614 hose->last_busno = 0xff;
1615 pcibios_scan_phb(hose);
1616 printk(KERN_INFO "calling pci_bus_add_devices()\n");
1617 pci_bus_add_devices(hose->bus);
1618 if (next_busno <= hose->last_busno)
1619 next_busno = hose->last_busno + 1;
1620 }
1621 pci_bus_count = next_busno;
1622
1623 /* Call common code to handle resource allocation */
1624 pcibios_resource_survey();
1625
1626 return 0;
1627}
1628
1629subsys_initcall(pcibios_init);
1630
1631static struct pci_controller *pci_bus_to_hose(int bus)
1632{
1633 struct pci_controller *hose, *tmp;
1634
1635 list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
1636 if (bus >= hose->first_busno && bus <= hose->last_busno)
1637 return hose;
1638 return NULL;
1639}
1640
1641/* Provide information on locations of various I/O regions in physical
1642 * memory. Do this on a per-card basis so that we choose the right
1643 * root bridge.
1644 * Note that the returned IO or memory base is a physical address
1645 */
1646
1647long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
1648{
1649 struct pci_controller *hose;
1650 long result = -EOPNOTSUPP;
1651
1652 hose = pci_bus_to_hose(bus);
1653 if (!hose)
1654 return -ENODEV;
1655
1656 switch (which) {
1657 case IOBASE_BRIDGE_NUMBER:
1658 return (long)hose->first_busno;
1659 case IOBASE_MEMORY:
1660 return (long)hose->pci_mem_offset;
1661 case IOBASE_IO:
1662 return (long)hose->io_base_phys;
1663 case IOBASE_ISA_IO:
1664 return (long)isa_io_base;
1665 case IOBASE_ISA_MEM:
1666 return (long)isa_mem_base;
1667 }
1668
1669 return result;
1670}
1671
1561/* 1672/*
1562 * Null PCI config access functions, for the case when we can't 1673 * Null PCI config access functions, for the case when we can't
1563 * find a hose. 1674 * find a hose.
@@ -1626,3 +1737,4 @@ int early_find_capability(struct pci_controller *hose, int bus, int devfn,
1626{ 1737{
1627 return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap); 1738 return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap);
1628} 1739}
1740
diff --git a/arch/microblaze/pci/pci_32.c b/arch/microblaze/pci/pci_32.c
deleted file mode 100644
index 92728a6cfd80..000000000000
--- a/arch/microblaze/pci/pci_32.c
+++ /dev/null
@@ -1,432 +0,0 @@
1/*
2 * Common pmac/prep/chrp pci routines. -- Cort
3 */
4
5#include <linux/kernel.h>
6#include <linux/pci.h>
7#include <linux/delay.h>
8#include <linux/string.h>
9#include <linux/init.h>
10#include <linux/capability.h>
11#include <linux/sched.h>
12#include <linux/errno.h>
13#include <linux/bootmem.h>
14#include <linux/irq.h>
15#include <linux/list.h>
16#include <linux/of.h>
17#include <linux/slab.h>
18
19#include <asm/processor.h>
20#include <asm/io.h>
21#include <asm/prom.h>
22#include <asm/sections.h>
23#include <asm/pci-bridge.h>
24#include <asm/byteorder.h>
25#include <asm/uaccess.h>
26
27#undef DEBUG
28
29unsigned long isa_io_base;
30unsigned long pci_dram_offset;
31int pcibios_assign_bus_offset = 1;
32
33static u8 *pci_to_OF_bus_map;
34
35/* By default, we don't re-assign bus numbers. We do this only on
36 * some pmacs
37 */
38static int pci_assign_all_buses;
39
40static int pci_bus_count;
41
42/*
43 * Functions below are used on OpenFirmware machines.
44 */
45static void
46make_one_node_map(struct device_node *node, u8 pci_bus)
47{
48 const int *bus_range;
49 int len;
50
51 if (pci_bus >= pci_bus_count)
52 return;
53 bus_range = of_get_property(node, "bus-range", &len);
54 if (bus_range == NULL || len < 2 * sizeof(int)) {
55 printk(KERN_WARNING "Can't get bus-range for %s, "
56 "assuming it starts at 0\n", node->full_name);
57 pci_to_OF_bus_map[pci_bus] = 0;
58 } else
59 pci_to_OF_bus_map[pci_bus] = bus_range[0];
60
61 for_each_child_of_node(node, node) {
62 struct pci_dev *dev;
63 const unsigned int *class_code, *reg;
64
65 class_code = of_get_property(node, "class-code", NULL);
66 if (!class_code ||
67 ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
68 (*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS))
69 continue;
70 reg = of_get_property(node, "reg", NULL);
71 if (!reg)
72 continue;
73 dev = pci_get_bus_and_slot(pci_bus, ((reg[0] >> 8) & 0xff));
74 if (!dev || !dev->subordinate) {
75 pci_dev_put(dev);
76 continue;
77 }
78 make_one_node_map(node, dev->subordinate->number);
79 pci_dev_put(dev);
80 }
81}
82
83void
84pcibios_make_OF_bus_map(void)
85{
86 int i;
87 struct pci_controller *hose, *tmp;
88 struct property *map_prop;
89 struct device_node *dn;
90
91 pci_to_OF_bus_map = kmalloc(pci_bus_count, GFP_KERNEL);
92 if (!pci_to_OF_bus_map) {
93 printk(KERN_ERR "Can't allocate OF bus map !\n");
94 return;
95 }
96
97 /* We fill the bus map with invalid values, that helps
98 * debugging.
99 */
100 for (i = 0; i < pci_bus_count; i++)
101 pci_to_OF_bus_map[i] = 0xff;
102
103 /* For each hose, we begin searching bridges */
104 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
105 struct device_node *node = hose->dn;
106
107 if (!node)
108 continue;
109 make_one_node_map(node, hose->first_busno);
110 }
111 dn = of_find_node_by_path("/");
112 map_prop = of_find_property(dn, "pci-OF-bus-map", NULL);
113 if (map_prop) {
114 BUG_ON(pci_bus_count > map_prop->length);
115 memcpy(map_prop->value, pci_to_OF_bus_map, pci_bus_count);
116 }
117 of_node_put(dn);
118#ifdef DEBUG
119 printk(KERN_INFO "PCI->OF bus map:\n");
120 for (i = 0; i < pci_bus_count; i++) {
121 if (pci_to_OF_bus_map[i] == 0xff)
122 continue;
123 printk(KERN_INFO "%d -> %d\n", i, pci_to_OF_bus_map[i]);
124 }
125#endif
126}
127
128typedef int (*pci_OF_scan_iterator)(struct device_node *node, void *data);
129
130static struct device_node *scan_OF_pci_childs(struct device_node *parent,
131 pci_OF_scan_iterator filter, void *data)
132{
133 struct device_node *node;
134 struct device_node *sub_node;
135
136 for_each_child_of_node(parent, node) {
137 const unsigned int *class_code;
138
139 if (filter(node, data)) {
140 of_node_put(node);
141 return node;
142 }
143
144 /* For PCI<->PCI bridges or CardBus bridges, we go down
145 * Note: some OFs create a parent node "multifunc-device" as
146 * a fake root for all functions of a multi-function device,
147 * we go down them as well.
148 */
149 class_code = of_get_property(node, "class-code", NULL);
150 if ((!class_code ||
151 ((*class_code >> 8) != PCI_CLASS_BRIDGE_PCI &&
152 (*class_code >> 8) != PCI_CLASS_BRIDGE_CARDBUS)) &&
153 strcmp(node->name, "multifunc-device"))
154 continue;
155 sub_node = scan_OF_pci_childs(node, filter, data);
156 if (sub_node) {
157 of_node_put(node);
158 return sub_node;
159 }
160 }
161 return NULL;
162}
163
164static struct device_node *scan_OF_for_pci_dev(struct device_node *parent,
165 unsigned int devfn)
166{
167 struct device_node *np, *cnp;
168 const u32 *reg;
169 unsigned int psize;
170
171 for_each_child_of_node(parent, np) {
172 reg = of_get_property(np, "reg", &psize);
173 if (reg && psize >= 4 && ((reg[0] >> 8) & 0xff) == devfn)
174 return np;
175
176 /* Note: some OFs create a parent node "multifunc-device" as
177 * a fake root for all functions of a multi-function device,
178 * we go down them as well. */
179 if (!strcmp(np->name, "multifunc-device")) {
180 cnp = scan_OF_for_pci_dev(np, devfn);
181 if (cnp)
182 return cnp;
183 }
184 }
185 return NULL;
186}
187
188
189static struct device_node *scan_OF_for_pci_bus(struct pci_bus *bus)
190{
191 struct device_node *parent, *np;
192
193 /* Are we a root bus ? */
194 if (bus->self == NULL || bus->parent == NULL) {
195 struct pci_controller *hose = pci_bus_to_host(bus);
196 if (hose == NULL)
197 return NULL;
198 return of_node_get(hose->dn);
199 }
200
201 /* not a root bus, we need to get our parent */
202 parent = scan_OF_for_pci_bus(bus->parent);
203 if (parent == NULL)
204 return NULL;
205
206 /* now iterate for children for a match */
207 np = scan_OF_for_pci_dev(parent, bus->self->devfn);
208 of_node_put(parent);
209
210 return np;
211}
212
213/*
214 * Scans the OF tree for a device node matching a PCI device
215 */
216struct device_node *
217pci_busdev_to_OF_node(struct pci_bus *bus, int devfn)
218{
219 struct device_node *parent, *np;
220
221 pr_debug("pci_busdev_to_OF_node(%d,0x%x)\n", bus->number, devfn);
222 parent = scan_OF_for_pci_bus(bus);
223 if (parent == NULL)
224 return NULL;
225 pr_debug(" parent is %s\n", parent ? parent->full_name : "<NULL>");
226 np = scan_OF_for_pci_dev(parent, devfn);
227 of_node_put(parent);
228 pr_debug(" result is %s\n", np ? np->full_name : "<NULL>");
229
230 /* XXX most callers don't release the returned node
231 * mostly because ppc64 doesn't increase the refcount,
232 * we need to fix that.
233 */
234 return np;
235}
236EXPORT_SYMBOL(pci_busdev_to_OF_node);
237
238struct device_node*
239pci_device_to_OF_node(struct pci_dev *dev)
240{
241 return pci_busdev_to_OF_node(dev->bus, dev->devfn);
242}
243EXPORT_SYMBOL(pci_device_to_OF_node);
244
245static int
246find_OF_pci_device_filter(struct device_node *node, void *data)
247{
248 return ((void *)node == data);
249}
250
251/*
252 * Returns the PCI device matching a given OF node
253 */
254int
255pci_device_from_OF_node(struct device_node *node, u8 *bus, u8 *devfn)
256{
257 const unsigned int *reg;
258 struct pci_controller *hose;
259 struct pci_dev *dev = NULL;
260
261 /* Make sure it's really a PCI device */
262 hose = pci_find_hose_for_OF_device(node);
263 if (!hose || !hose->dn)
264 return -ENODEV;
265 if (!scan_OF_pci_childs(hose->dn,
266 find_OF_pci_device_filter, (void *)node))
267 return -ENODEV;
268 reg = of_get_property(node, "reg", NULL);
269 if (!reg)
270 return -ENODEV;
271 *bus = (reg[0] >> 16) & 0xff;
272 *devfn = ((reg[0] >> 8) & 0xff);
273
274 /* Ok, here we need some tweak. If we have already renumbered
275 * all busses, we can't rely on the OF bus number any more.
276 * the pci_to_OF_bus_map is not enough as several PCI busses
277 * may match the same OF bus number.
278 */
279 if (!pci_to_OF_bus_map)
280 return 0;
281
282 for_each_pci_dev(dev)
283 if (pci_to_OF_bus_map[dev->bus->number] == *bus &&
284 dev->devfn == *devfn) {
285 *bus = dev->bus->number;
286 pci_dev_put(dev);
287 return 0;
288 }
289
290 return -ENODEV;
291}
292EXPORT_SYMBOL(pci_device_from_OF_node);
293
294/* We create the "pci-OF-bus-map" property now so it appears in the
295 * /proc device tree
296 */
297void __init
298pci_create_OF_bus_map(void)
299{
300 struct property *of_prop;
301 struct device_node *dn;
302
303 of_prop = (struct property *) alloc_bootmem(sizeof(struct property) + \
304 256);
305 if (!of_prop)
306 return;
307 dn = of_find_node_by_path("/");
308 if (dn) {
309 memset(of_prop, -1, sizeof(struct property) + 256);
310 of_prop->name = "pci-OF-bus-map";
311 of_prop->length = 256;
312 of_prop->value = &of_prop[1];
313 prom_add_property(dn, of_prop);
314 of_node_put(dn);
315 }
316}
317
318static void __devinit pcibios_scan_phb(struct pci_controller *hose)
319{
320 struct pci_bus *bus;
321 struct device_node *node = hose->dn;
322 unsigned long io_offset;
323 struct resource *res = &hose->io_resource;
324
325 pr_debug("PCI: Scanning PHB %s\n",
326 node ? node->full_name : "<NO NAME>");
327
328 /* Create an empty bus for the toplevel */
329 bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose);
330 if (bus == NULL) {
331 printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
332 hose->global_number);
333 return;
334 }
335 bus.dev->of_node = of_node_get(node);
336 bus->secondary = hose->first_busno;
337 hose->bus = bus;
338
339 /* Fixup IO space offset */
340 io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
341 res->start = (res->start + io_offset) & 0xffffffffu;
342 res->end = (res->end + io_offset) & 0xffffffffu;
343
344 /* Wire up PHB bus resources */
345 pcibios_setup_phb_resources(hose);
346
347 /* Scan children */
348 hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
349}
350
351static int __init pcibios_init(void)
352{
353 struct pci_controller *hose, *tmp;
354 int next_busno = 0;
355
356 printk(KERN_INFO "PCI: Probing PCI hardware\n");
357
358 if (pci_flags & PCI_REASSIGN_ALL_BUS) {
359 printk(KERN_INFO "setting pci_asign_all_busses\n");
360 pci_assign_all_buses = 1;
361 }
362
363 /* Scan all of the recorded PCI controllers. */
364 list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
365 if (pci_assign_all_buses)
366 hose->first_busno = next_busno;
367 hose->last_busno = 0xff;
368 pcibios_scan_phb(hose);
369 printk(KERN_INFO "calling pci_bus_add_devices()\n");
370 pci_bus_add_devices(hose->bus);
371 if (pci_assign_all_buses || next_busno <= hose->last_busno)
372 next_busno = hose->last_busno + \
373 pcibios_assign_bus_offset;
374 }
375 pci_bus_count = next_busno;
376
377 /* OpenFirmware based machines need a map of OF bus
378 * numbers vs. kernel bus numbers since we may have to
379 * remap them.
380 */
381 if (pci_assign_all_buses)
382 pcibios_make_OF_bus_map();
383
384 /* Call common code to handle resource allocation */
385 pcibios_resource_survey();
386
387 return 0;
388}
389
390subsys_initcall(pcibios_init);
391
392static struct pci_controller*
393pci_bus_to_hose(int bus)
394{
395 struct pci_controller *hose, *tmp;
396
397 list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
398 if (bus >= hose->first_busno && bus <= hose->last_busno)
399 return hose;
400 return NULL;
401}
402
403/* Provide information on locations of various I/O regions in physical
404 * memory. Do this on a per-card basis so that we choose the right
405 * root bridge.
406 * Note that the returned IO or memory base is a physical address
407 */
408
409long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
410{
411 struct pci_controller *hose;
412 long result = -EOPNOTSUPP;
413
414 hose = pci_bus_to_hose(bus);
415 if (!hose)
416 return -ENODEV;
417
418 switch (which) {
419 case IOBASE_BRIDGE_NUMBER:
420 return (long)hose->first_busno;
421 case IOBASE_MEMORY:
422 return (long)hose->pci_mem_offset;
423 case IOBASE_IO:
424 return (long)hose->io_base_phys;
425 case IOBASE_ISA_IO:
426 return (long)isa_io_base;
427 case IOBASE_ISA_MEM:
428 return (long)isa_mem_base;
429 }
430
431 return result;
432}
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