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authorRobert Reif <reif@earthlink.net>2009-06-04 05:00:02 -0400
committerDavid S. Miller <davem@davemloft.net>2009-06-16 07:56:49 -0400
commitc9f5b7e77c30da25104a3f7f26ac46c07d7b5cb6 (patch)
treee209e70377b4fbaf95168366430884b3b2474d2e /arch/sparc
parentd69864158e24f323e818403c6b89ad4871aea6f6 (diff)
sparc: move of_device common code to of_device_common
This patch moves code common to of_device_32.c and of_device_64.c into of_device_common.h and of_device_common.c. The only functional difference is in sparc32 where of_bus_default_map is used in place of of_bus_sbus_map because they are equivelent. There is still room for further code consolidation with some minor refactoring. Boot tested on sparc32 and compile tested on sparc64. Signed-off-by: Robert Reif <reif@earthlink.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/kernel/Makefile1
-rw-r--r--arch/sparc/kernel/of_device_32.c195
-rw-r--r--arch/sparc/kernel/of_device_64.c188
-rw-r--r--arch/sparc/kernel/of_device_common.c174
-rw-r--r--arch/sparc/kernel/of_device_common.h36
5 files changed, 216 insertions, 378 deletions
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 47029c66b17a..475ce4696acd 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -37,6 +37,7 @@ obj-y += una_asm_$(BITS).o
37obj-$(CONFIG_SPARC32) += muldiv.o 37obj-$(CONFIG_SPARC32) += muldiv.o
38obj-y += prom_common.o 38obj-y += prom_common.o
39obj-y += prom_$(BITS).o 39obj-y += prom_$(BITS).o
40obj-y += of_device_common.o
40obj-y += of_device_$(BITS).o 41obj-y += of_device_$(BITS).o
41obj-$(CONFIG_SPARC64) += prom_irqtrans.o 42obj-$(CONFIG_SPARC64) += prom_irqtrans.o
42 43
diff --git a/arch/sparc/kernel/of_device_32.c b/arch/sparc/kernel/of_device_32.c
index c8f14c1dc521..90396702ea2c 100644
--- a/arch/sparc/kernel/of_device_32.c
+++ b/arch/sparc/kernel/of_device_32.c
@@ -6,159 +6,11 @@
6#include <linux/mod_devicetable.h> 6#include <linux/mod_devicetable.h>
7#include <linux/slab.h> 7#include <linux/slab.h>
8#include <linux/errno.h> 8#include <linux/errno.h>
9#include <linux/irq.h>
9#include <linux/of_device.h> 10#include <linux/of_device.h>
10#include <linux/of_platform.h> 11#include <linux/of_platform.h>
11 12
12static int node_match(struct device *dev, void *data) 13#include "of_device_common.h"
13{
14 struct of_device *op = to_of_device(dev);
15 struct device_node *dp = data;
16
17 return (op->node == dp);
18}
19
20struct of_device *of_find_device_by_node(struct device_node *dp)
21{
22 struct device *dev = bus_find_device(&of_platform_bus_type, NULL,
23 dp, node_match);
24
25 if (dev)
26 return to_of_device(dev);
27
28 return NULL;
29}
30EXPORT_SYMBOL(of_find_device_by_node);
31
32unsigned int irq_of_parse_and_map(struct device_node *node, int index)
33{
34 struct of_device *op = of_find_device_by_node(node);
35
36 if (!op || index >= op->num_irqs)
37 return 0;
38
39 return op->irqs[index];
40}
41EXPORT_SYMBOL(irq_of_parse_and_map);
42
43/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
44 * BUS and propagate to all child of_device objects.
45 */
46void of_propagate_archdata(struct of_device *bus)
47{
48 struct dev_archdata *bus_sd = &bus->dev.archdata;
49 struct device_node *bus_dp = bus->node;
50 struct device_node *dp;
51
52 for (dp = bus_dp->child; dp; dp = dp->sibling) {
53 struct of_device *op = of_find_device_by_node(dp);
54
55 op->dev.archdata.iommu = bus_sd->iommu;
56 op->dev.archdata.stc = bus_sd->stc;
57 op->dev.archdata.host_controller = bus_sd->host_controller;
58 op->dev.archdata.numa_node = bus_sd->numa_node;
59
60 if (dp->child)
61 of_propagate_archdata(op);
62 }
63}
64
65struct bus_type of_platform_bus_type;
66EXPORT_SYMBOL(of_platform_bus_type);
67
68static inline u64 of_read_addr(const u32 *cell, int size)
69{
70 u64 r = 0;
71 while (size--)
72 r = (r << 32) | *(cell++);
73 return r;
74}
75
76static void __init get_cells(struct device_node *dp,
77 int *addrc, int *sizec)
78{
79 if (addrc)
80 *addrc = of_n_addr_cells(dp);
81 if (sizec)
82 *sizec = of_n_size_cells(dp);
83}
84
85/* Max address size we deal with */
86#define OF_MAX_ADDR_CELLS 4
87
88struct of_bus {
89 const char *name;
90 const char *addr_prop_name;
91 int (*match)(struct device_node *parent);
92 void (*count_cells)(struct device_node *child,
93 int *addrc, int *sizec);
94 int (*map)(u32 *addr, const u32 *range,
95 int na, int ns, int pna);
96 unsigned long (*get_flags)(const u32 *addr, unsigned long);
97};
98
99/*
100 * Default translator (generic bus)
101 */
102
103static void of_bus_default_count_cells(struct device_node *dev,
104 int *addrc, int *sizec)
105{
106 get_cells(dev, addrc, sizec);
107}
108
109/* Make sure the least significant 64-bits are in-range. Even
110 * for 3 or 4 cell values it is a good enough approximation.
111 */
112static int of_out_of_range(const u32 *addr, const u32 *base,
113 const u32 *size, int na, int ns)
114{
115 u64 a = of_read_addr(addr, na);
116 u64 b = of_read_addr(base, na);
117
118 if (a < b)
119 return 1;
120
121 b += of_read_addr(size, ns);
122 if (a >= b)
123 return 1;
124
125 return 0;
126}
127
128static int of_bus_default_map(u32 *addr, const u32 *range,
129 int na, int ns, int pna)
130{
131 u32 result[OF_MAX_ADDR_CELLS];
132 int i;
133
134 if (ns > 2) {
135 printk("of_device: Cannot handle size cells (%d) > 2.", ns);
136 return -EINVAL;
137 }
138
139 if (of_out_of_range(addr, range, range + na + pna, na, ns))
140 return -EINVAL;
141
142 /* Start with the parent range base. */
143 memcpy(result, range + na, pna * 4);
144
145 /* Add in the child address offset. */
146 for (i = 0; i < na; i++)
147 result[pna - 1 - i] +=
148 (addr[na - 1 - i] -
149 range[na - 1 - i]);
150
151 memcpy(addr, result, pna * 4);
152
153 return 0;
154}
155
156static unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags)
157{
158 if (flags)
159 return flags;
160 return IORESOURCE_MEM;
161}
162 14
163/* 15/*
164 * PCI bus specific translator 16 * PCI bus specific translator
@@ -240,47 +92,6 @@ static unsigned long of_bus_pci_get_flags(const u32 *addr, unsigned long flags)
240 return flags; 92 return flags;
241} 93}
242 94
243/*
244 * SBUS bus specific translator
245 */
246
247static int of_bus_sbus_match(struct device_node *np)
248{
249 struct device_node *dp = np;
250
251 while (dp) {
252 if (!strcmp(dp->name, "sbus") ||
253 !strcmp(dp->name, "sbi"))
254 return 1;
255
256 /* Have a look at use_1to1_mapping(). We're trying
257 * to match SBUS if that's the top-level bus and we
258 * don't have some intervening real bus that provides
259 * ranges based translations.
260 */
261 if (of_find_property(dp, "ranges", NULL) != NULL)
262 break;
263
264 dp = dp->parent;
265 }
266
267 return 0;
268}
269
270static void of_bus_sbus_count_cells(struct device_node *child,
271 int *addrc, int *sizec)
272{
273 if (addrc)
274 *addrc = 2;
275 if (sizec)
276 *sizec = 1;
277}
278
279static int of_bus_sbus_map(u32 *addr, const u32 *range, int na, int ns, int pna)
280{
281 return of_bus_default_map(addr, range, na, ns, pna);
282}
283
284static unsigned long of_bus_sbus_get_flags(const u32 *addr, unsigned long flags) 95static unsigned long of_bus_sbus_get_flags(const u32 *addr, unsigned long flags)
285{ 96{
286 return IORESOURCE_MEM; 97 return IORESOURCE_MEM;
@@ -307,7 +118,7 @@ static struct of_bus of_busses[] = {
307 .addr_prop_name = "reg", 118 .addr_prop_name = "reg",
308 .match = of_bus_sbus_match, 119 .match = of_bus_sbus_match,
309 .count_cells = of_bus_sbus_count_cells, 120 .count_cells = of_bus_sbus_count_cells,
310 .map = of_bus_sbus_map, 121 .map = of_bus_default_map,
311 .get_flags = of_bus_sbus_get_flags, 122 .get_flags = of_bus_sbus_get_flags,
312 }, 123 },
313 /* Default */ 124 /* Default */
diff --git a/arch/sparc/kernel/of_device_64.c b/arch/sparc/kernel/of_device_64.c
index 5ac287ac03de..881947e59e95 100644
--- a/arch/sparc/kernel/of_device_64.c
+++ b/arch/sparc/kernel/of_device_64.c
@@ -10,6 +10,8 @@
10#include <linux/of_device.h> 10#include <linux/of_device.h>
11#include <linux/of_platform.h> 11#include <linux/of_platform.h>
12 12
13#include "of_device_common.h"
14
13void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name) 15void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name)
14{ 16{
15 unsigned long ret = res->start + offset; 17 unsigned long ret = res->start + offset;
@@ -35,156 +37,6 @@ void of_iounmap(struct resource *res, void __iomem *base, unsigned long size)
35} 37}
36EXPORT_SYMBOL(of_iounmap); 38EXPORT_SYMBOL(of_iounmap);
37 39
38static int node_match(struct device *dev, void *data)
39{
40 struct of_device *op = to_of_device(dev);
41 struct device_node *dp = data;
42
43 return (op->node == dp);
44}
45
46struct of_device *of_find_device_by_node(struct device_node *dp)
47{
48 struct device *dev = bus_find_device(&of_platform_bus_type, NULL,
49 dp, node_match);
50
51 if (dev)
52 return to_of_device(dev);
53
54 return NULL;
55}
56EXPORT_SYMBOL(of_find_device_by_node);
57
58unsigned int irq_of_parse_and_map(struct device_node *node, int index)
59{
60 struct of_device *op = of_find_device_by_node(node);
61
62 if (!op || index >= op->num_irqs)
63 return 0;
64
65 return op->irqs[index];
66}
67EXPORT_SYMBOL(irq_of_parse_and_map);
68
69/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
70 * BUS and propagate to all child of_device objects.
71 */
72void of_propagate_archdata(struct of_device *bus)
73{
74 struct dev_archdata *bus_sd = &bus->dev.archdata;
75 struct device_node *bus_dp = bus->node;
76 struct device_node *dp;
77
78 for (dp = bus_dp->child; dp; dp = dp->sibling) {
79 struct of_device *op = of_find_device_by_node(dp);
80
81 op->dev.archdata.iommu = bus_sd->iommu;
82 op->dev.archdata.stc = bus_sd->stc;
83 op->dev.archdata.host_controller = bus_sd->host_controller;
84 op->dev.archdata.numa_node = bus_sd->numa_node;
85
86 if (dp->child)
87 of_propagate_archdata(op);
88 }
89}
90
91struct bus_type of_platform_bus_type;
92EXPORT_SYMBOL(of_platform_bus_type);
93
94static inline u64 of_read_addr(const u32 *cell, int size)
95{
96 u64 r = 0;
97 while (size--)
98 r = (r << 32) | *(cell++);
99 return r;
100}
101
102static void get_cells(struct device_node *dp, int *addrc, int *sizec)
103{
104 if (addrc)
105 *addrc = of_n_addr_cells(dp);
106 if (sizec)
107 *sizec = of_n_size_cells(dp);
108}
109
110/* Max address size we deal with */
111#define OF_MAX_ADDR_CELLS 4
112
113struct of_bus {
114 const char *name;
115 const char *addr_prop_name;
116 int (*match)(struct device_node *parent);
117 void (*count_cells)(struct device_node *child,
118 int *addrc, int *sizec);
119 int (*map)(u32 *addr, const u32 *range,
120 int na, int ns, int pna);
121 unsigned long (*get_flags)(const u32 *addr, unsigned long);
122};
123
124/*
125 * Default translator (generic bus)
126 */
127
128static void of_bus_default_count_cells(struct device_node *dev,
129 int *addrc, int *sizec)
130{
131 get_cells(dev, addrc, sizec);
132}
133
134/* Make sure the least significant 64-bits are in-range. Even
135 * for 3 or 4 cell values it is a good enough approximation.
136 */
137static int of_out_of_range(const u32 *addr, const u32 *base,
138 const u32 *size, int na, int ns)
139{
140 u64 a = of_read_addr(addr, na);
141 u64 b = of_read_addr(base, na);
142
143 if (a < b)
144 return 1;
145
146 b += of_read_addr(size, ns);
147 if (a >= b)
148 return 1;
149
150 return 0;
151}
152
153static int of_bus_default_map(u32 *addr, const u32 *range,
154 int na, int ns, int pna)
155{
156 u32 result[OF_MAX_ADDR_CELLS];
157 int i;
158
159 if (ns > 2) {
160 printk("of_device: Cannot handle size cells (%d) > 2.", ns);
161 return -EINVAL;
162 }
163
164 if (of_out_of_range(addr, range, range + na + pna, na, ns))
165 return -EINVAL;
166
167 /* Start with the parent range base. */
168 memcpy(result, range + na, pna * 4);
169
170 /* Add in the child address offset. */
171 for (i = 0; i < na; i++)
172 result[pna - 1 - i] +=
173 (addr[na - 1 - i] -
174 range[na - 1 - i]);
175
176 memcpy(addr, result, pna * 4);
177
178 return 0;
179}
180
181static unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags)
182{
183 if (flags)
184 return flags;
185 return IORESOURCE_MEM;
186}
187
188/* 40/*
189 * PCI bus specific translator 41 * PCI bus specific translator
190 */ 42 */
@@ -295,42 +147,6 @@ static unsigned long of_bus_pci_get_flags(const u32 *addr, unsigned long flags)
295} 147}
296 148
297/* 149/*
298 * SBUS bus specific translator
299 */
300
301static int of_bus_sbus_match(struct device_node *np)
302{
303 struct device_node *dp = np;
304
305 while (dp) {
306 if (!strcmp(dp->name, "sbus") ||
307 !strcmp(dp->name, "sbi"))
308 return 1;
309
310 /* Have a look at use_1to1_mapping(). We're trying
311 * to match SBUS if that's the top-level bus and we
312 * don't have some intervening real bus that provides
313 * ranges based translations.
314 */
315 if (of_find_property(dp, "ranges", NULL) != NULL)
316 break;
317
318 dp = dp->parent;
319 }
320
321 return 0;
322}
323
324static void of_bus_sbus_count_cells(struct device_node *child,
325 int *addrc, int *sizec)
326{
327 if (addrc)
328 *addrc = 2;
329 if (sizec)
330 *sizec = 1;
331}
332
333/*
334 * FHC/Central bus specific translator. 150 * FHC/Central bus specific translator.
335 * 151 *
336 * This is just needed to hard-code the address and size cell 152 * This is just needed to hard-code the address and size cell
diff --git a/arch/sparc/kernel/of_device_common.c b/arch/sparc/kernel/of_device_common.c
new file mode 100644
index 000000000000..cb8eb799bb6c
--- /dev/null
+++ b/arch/sparc/kernel/of_device_common.c
@@ -0,0 +1,174 @@
1#include <linux/string.h>
2#include <linux/kernel.h>
3#include <linux/of.h>
4#include <linux/init.h>
5#include <linux/module.h>
6#include <linux/mod_devicetable.h>
7#include <linux/slab.h>
8#include <linux/errno.h>
9#include <linux/irq.h>
10#include <linux/of_device.h>
11#include <linux/of_platform.h>
12
13#include "of_device_common.h"
14
15static int node_match(struct device *dev, void *data)
16{
17 struct of_device *op = to_of_device(dev);
18 struct device_node *dp = data;
19
20 return (op->node == dp);
21}
22
23struct of_device *of_find_device_by_node(struct device_node *dp)
24{
25 struct device *dev = bus_find_device(&of_platform_bus_type, NULL,
26 dp, node_match);
27
28 if (dev)
29 return to_of_device(dev);
30
31 return NULL;
32}
33EXPORT_SYMBOL(of_find_device_by_node);
34
35unsigned int irq_of_parse_and_map(struct device_node *node, int index)
36{
37 struct of_device *op = of_find_device_by_node(node);
38
39 if (!op || index >= op->num_irqs)
40 return 0;
41
42 return op->irqs[index];
43}
44EXPORT_SYMBOL(irq_of_parse_and_map);
45
46/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
47 * BUS and propagate to all child of_device objects.
48 */
49void of_propagate_archdata(struct of_device *bus)
50{
51 struct dev_archdata *bus_sd = &bus->dev.archdata;
52 struct device_node *bus_dp = bus->node;
53 struct device_node *dp;
54
55 for (dp = bus_dp->child; dp; dp = dp->sibling) {
56 struct of_device *op = of_find_device_by_node(dp);
57
58 op->dev.archdata.iommu = bus_sd->iommu;
59 op->dev.archdata.stc = bus_sd->stc;
60 op->dev.archdata.host_controller = bus_sd->host_controller;
61 op->dev.archdata.numa_node = bus_sd->numa_node;
62
63 if (dp->child)
64 of_propagate_archdata(op);
65 }
66}
67
68struct bus_type of_platform_bus_type;
69EXPORT_SYMBOL(of_platform_bus_type);
70
71static void get_cells(struct device_node *dp, int *addrc, int *sizec)
72{
73 if (addrc)
74 *addrc = of_n_addr_cells(dp);
75 if (sizec)
76 *sizec = of_n_size_cells(dp);
77}
78
79/*
80 * Default translator (generic bus)
81 */
82
83void of_bus_default_count_cells(struct device_node *dev, int *addrc, int *sizec)
84{
85 get_cells(dev, addrc, sizec);
86}
87
88/* Make sure the least significant 64-bits are in-range. Even
89 * for 3 or 4 cell values it is a good enough approximation.
90 */
91int of_out_of_range(const u32 *addr, const u32 *base,
92 const u32 *size, int na, int ns)
93{
94 u64 a = of_read_addr(addr, na);
95 u64 b = of_read_addr(base, na);
96
97 if (a < b)
98 return 1;
99
100 b += of_read_addr(size, ns);
101 if (a >= b)
102 return 1;
103
104 return 0;
105}
106
107int of_bus_default_map(u32 *addr, const u32 *range, int na, int ns, int pna)
108{
109 u32 result[OF_MAX_ADDR_CELLS];
110 int i;
111
112 if (ns > 2) {
113 printk("of_device: Cannot handle size cells (%d) > 2.", ns);
114 return -EINVAL;
115 }
116
117 if (of_out_of_range(addr, range, range + na + pna, na, ns))
118 return -EINVAL;
119
120 /* Start with the parent range base. */
121 memcpy(result, range + na, pna * 4);
122
123 /* Add in the child address offset. */
124 for (i = 0; i < na; i++)
125 result[pna - 1 - i] +=
126 (addr[na - 1 - i] -
127 range[na - 1 - i]);
128
129 memcpy(addr, result, pna * 4);
130
131 return 0;
132}
133
134unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags)
135{
136 if (flags)
137 return flags;
138 return IORESOURCE_MEM;
139}
140
141/*
142 * SBUS bus specific translator
143 */
144
145int of_bus_sbus_match(struct device_node *np)
146{
147 struct device_node *dp = np;
148
149 while (dp) {
150 if (!strcmp(dp->name, "sbus") ||
151 !strcmp(dp->name, "sbi"))
152 return 1;
153
154 /* Have a look at use_1to1_mapping(). We're trying
155 * to match SBUS if that's the top-level bus and we
156 * don't have some intervening real bus that provides
157 * ranges based translations.
158 */
159 if (of_find_property(dp, "ranges", NULL) != NULL)
160 break;
161
162 dp = dp->parent;
163 }
164
165 return 0;
166}
167
168void of_bus_sbus_count_cells(struct device_node *child, int *addrc, int *sizec)
169{
170 if (addrc)
171 *addrc = 2;
172 if (sizec)
173 *sizec = 1;
174}
diff --git a/arch/sparc/kernel/of_device_common.h b/arch/sparc/kernel/of_device_common.h
new file mode 100644
index 000000000000..cdfd23992841
--- /dev/null
+++ b/arch/sparc/kernel/of_device_common.h
@@ -0,0 +1,36 @@
1#ifndef _OF_DEVICE_COMMON_H
2#define _OF_DEVICE_COMMON_H
3
4static inline u64 of_read_addr(const u32 *cell, int size)
5{
6 u64 r = 0;
7 while (size--)
8 r = (r << 32) | *(cell++);
9 return r;
10}
11
12void of_bus_default_count_cells(struct device_node *dev, int *addrc,
13 int *sizec);
14int of_out_of_range(const u32 *addr, const u32 *base,
15 const u32 *size, int na, int ns);
16int of_bus_default_map(u32 *addr, const u32 *range, int na, int ns, int pna);
17unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags);
18
19int of_bus_sbus_match(struct device_node *np);
20void of_bus_sbus_count_cells(struct device_node *child, int *addrc, int *sizec);
21
22/* Max address size we deal with */
23#define OF_MAX_ADDR_CELLS 4
24
25struct of_bus {
26 const char *name;
27 const char *addr_prop_name;
28 int (*match)(struct device_node *parent);
29 void (*count_cells)(struct device_node *child,
30 int *addrc, int *sizec);
31 int (*map)(u32 *addr, const u32 *range,
32 int na, int ns, int pna);
33 unsigned long (*get_flags)(const u32 *addr, unsigned long);
34};
35
36#endif /* _OF_DEVICE_COMMON_H */
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