Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2...
[linux-2.6] / arch / sparc64 / kernel / isa.c
1 #include <linux/kernel.h>
2 #include <linux/init.h>
3 #include <linux/pci.h>
4 #include <linux/slab.h>
5 #include <asm/oplib.h>
6 #include <asm/prom.h>
7 #include <asm/of_device.h>
8 #include <asm/isa.h>
9
10 struct sparc_isa_bridge *isa_chain;
11
12 static void __init fatal_err(const char *reason)
13 {
14         prom_printf("ISA: fatal error, %s.\n", reason);
15 }
16
17 static void __init report_dev(struct sparc_isa_device *isa_dev, int child)
18 {
19         if (child)
20                 printk(" (%s)", isa_dev->prom_node->name);
21         else
22                 printk(" [%s", isa_dev->prom_node->name);
23 }
24
25 static struct linux_prom_registers * __init
26 isa_dev_get_resource(struct sparc_isa_device *isa_dev)
27 {
28         struct linux_prom_registers *pregs;
29         unsigned long base, len;
30         int prop_len;
31
32         pregs = of_get_property(isa_dev->prom_node, "reg", &prop_len);
33
34         /* Only the first one is interesting. */
35         len = pregs[0].reg_size;
36         base = (((unsigned long)pregs[0].which_io << 32) |
37                 (unsigned long)pregs[0].phys_addr);
38         base += isa_dev->bus->parent->io_space.start;
39
40         isa_dev->resource.start = base;
41         isa_dev->resource.end   = (base + len - 1UL);
42         isa_dev->resource.flags = IORESOURCE_IO;
43         isa_dev->resource.name  = isa_dev->prom_node->name;
44
45         request_resource(&isa_dev->bus->parent->io_space,
46                          &isa_dev->resource);
47
48         return pregs;
49 }
50
51 static void __init isa_dev_get_irq(struct sparc_isa_device *isa_dev,
52                                    struct linux_prom_registers *pregs)
53 {
54         struct of_device *op = of_find_device_by_node(isa_dev->prom_node);
55
56         if (!op || !op->num_irqs) {
57                 isa_dev->irq = PCI_IRQ_NONE;
58         } else {
59                 isa_dev->irq = op->irqs[0];
60         }
61 }
62
63 static void __init isa_fill_children(struct sparc_isa_device *parent_isa_dev)
64 {
65         struct device_node *dp = parent_isa_dev->prom_node->child;
66
67         if (!dp)
68                 return;
69
70         printk(" ->");
71         while (dp) {
72                 struct linux_prom_registers *regs;
73                 struct sparc_isa_device *isa_dev;
74
75                 isa_dev = kzalloc(sizeof(*isa_dev), GFP_KERNEL);
76                 if (!isa_dev) {
77                         fatal_err("cannot allocate child isa_dev");
78                         prom_halt();
79                 }
80
81                 /* Link it in to parent. */
82                 isa_dev->next = parent_isa_dev->child;
83                 parent_isa_dev->child = isa_dev;
84
85                 isa_dev->bus = parent_isa_dev->bus;
86                 isa_dev->prom_node = dp;
87
88                 regs = isa_dev_get_resource(isa_dev);
89                 isa_dev_get_irq(isa_dev, regs);
90
91                 report_dev(isa_dev, 1);
92
93                 dp = dp->sibling;
94         }
95 }
96
97 static void __init isa_fill_devices(struct sparc_isa_bridge *isa_br)
98 {
99         struct device_node *dp = isa_br->prom_node->child;
100
101         while (dp) {
102                 struct linux_prom_registers *regs;
103                 struct sparc_isa_device *isa_dev;
104
105                 isa_dev = kzalloc(sizeof(*isa_dev), GFP_KERNEL);
106                 if (!isa_dev) {
107                         printk(KERN_DEBUG "ISA: cannot allocate isa_dev");
108                         return;
109                 }
110
111                 isa_dev->ofdev.node = dp;
112                 isa_dev->ofdev.dev.parent = &isa_br->ofdev.dev;
113                 isa_dev->ofdev.dev.bus = &isa_bus_type;
114                 sprintf(isa_dev->ofdev.dev.bus_id, "isa[%08x]", dp->node);
115
116                 /* Register with core */
117                 if (of_device_register(&isa_dev->ofdev) != 0) {
118                         printk(KERN_DEBUG "isa: device registration error for %s!\n",
119                                dp->path_component_name);
120                         kfree(isa_dev);
121                         goto next_sibling;
122                 }
123
124                 /* Link it in. */
125                 isa_dev->next = NULL;
126                 if (isa_br->devices == NULL) {
127                         isa_br->devices = isa_dev;
128                 } else {
129                         struct sparc_isa_device *tmp = isa_br->devices;
130
131                         while (tmp->next)
132                                 tmp = tmp->next;
133
134                         tmp->next = isa_dev;
135                 }
136
137                 isa_dev->bus = isa_br;
138                 isa_dev->prom_node = dp;
139
140                 regs = isa_dev_get_resource(isa_dev);
141                 isa_dev_get_irq(isa_dev, regs);
142
143                 report_dev(isa_dev, 0);
144
145                 isa_fill_children(isa_dev);
146
147                 printk("]");
148
149         next_sibling:
150                 dp = dp->sibling;
151         }
152 }
153
154 void __init isa_init(void)
155 {
156         struct pci_dev *pdev;
157         unsigned short vendor, device;
158         int index = 0;
159
160         vendor = PCI_VENDOR_ID_AL;
161         device = PCI_DEVICE_ID_AL_M1533;
162
163         pdev = NULL;
164         while ((pdev = pci_get_device(vendor, device, pdev)) != NULL) {
165                 struct pcidev_cookie *pdev_cookie;
166                 struct pci_pbm_info *pbm;
167                 struct sparc_isa_bridge *isa_br;
168                 struct device_node *dp;
169
170                 pdev_cookie = pdev->sysdata;
171                 if (!pdev_cookie) {
172                         printk("ISA: Warning, ISA bridge ignored due to "
173                                "lack of OBP data.\n");
174                         continue;
175                 }
176                 pbm = pdev_cookie->pbm;
177                 dp = pdev_cookie->prom_node;
178
179                 isa_br = kzalloc(sizeof(*isa_br), GFP_KERNEL);
180                 if (!isa_br) {
181                         printk(KERN_DEBUG "isa: cannot allocate sparc_isa_bridge");
182                         return;
183                 }
184
185                 isa_br->ofdev.node = dp;
186                 isa_br->ofdev.dev.parent = &pdev->dev;
187                 isa_br->ofdev.dev.bus = &isa_bus_type;
188                 sprintf(isa_br->ofdev.dev.bus_id, "isa%d", index);
189
190                 /* Register with core */
191                 if (of_device_register(&isa_br->ofdev) != 0) {
192                         printk(KERN_DEBUG "isa: device registration error for %s!\n",
193                                dp->path_component_name);
194                         kfree(isa_br);
195                         return;
196                 }
197
198                 /* Link it in. */
199                 isa_br->next = isa_chain;
200                 isa_chain = isa_br;
201
202                 isa_br->parent = pbm;
203                 isa_br->self = pdev;
204                 isa_br->index = index++;
205                 isa_br->prom_node = pdev_cookie->prom_node;
206
207                 printk("isa%d:", isa_br->index);
208
209                 isa_fill_devices(isa_br);
210
211                 printk("\n");
212         }
213 }