Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Architecture specific OF callbacks. |
| 3 | */ |
| 4 | #include <linux/bootmem.h> |
Paul Gortmaker | 69c60c8 | 2011-05-26 12:22:53 -0400 | [diff] [blame] | 5 | #include <linux/export.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 6 | #include <linux/io.h> |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 7 | #include <linux/irqdomain.h> |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 8 | #include <linux/interrupt.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 9 | #include <linux/list.h> |
| 10 | #include <linux/of.h> |
| 11 | #include <linux/of_fdt.h> |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 12 | #include <linux/of_address.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 13 | #include <linux/of_platform.h> |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 14 | #include <linux/of_irq.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 15 | #include <linux/slab.h> |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 16 | #include <linux/pci.h> |
| 17 | #include <linux/of_pci.h> |
Florian Fainelli | 977cb76 | 2011-06-06 10:15:49 +0200 | [diff] [blame] | 18 | #include <linux/initrd.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 19 | |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 20 | #include <asm/hpet.h> |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 21 | #include <asm/apic.h> |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 22 | #include <asm/pci_x86.h> |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 23 | |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 24 | __initdata u64 initial_dtb; |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 25 | char __initdata cmd_line[COMMAND_LINE_SIZE]; |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 26 | |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 27 | int __initdata of_ioapic; |
| 28 | |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 29 | unsigned long pci_address_to_pio(phys_addr_t address) |
| 30 | { |
| 31 | /* |
| 32 | * The ioport address can be directly used by inX / outX |
| 33 | */ |
| 34 | BUG_ON(address >= (1 << 16)); |
| 35 | return (unsigned long)address; |
| 36 | } |
| 37 | EXPORT_SYMBOL_GPL(pci_address_to_pio); |
| 38 | |
| 39 | void __init early_init_dt_scan_chosen_arch(unsigned long node) |
| 40 | { |
| 41 | BUG(); |
| 42 | } |
| 43 | |
| 44 | void __init early_init_dt_add_memory_arch(u64 base, u64 size) |
| 45 | { |
| 46 | BUG(); |
| 47 | } |
| 48 | |
| 49 | void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) |
| 50 | { |
| 51 | return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS)); |
| 52 | } |
| 53 | |
Florian Fainelli | 977cb76 | 2011-06-06 10:15:49 +0200 | [diff] [blame] | 54 | #ifdef CONFIG_BLK_DEV_INITRD |
| 55 | void __init early_init_dt_setup_initrd_arch(unsigned long start, |
| 56 | unsigned long end) |
| 57 | { |
| 58 | initrd_start = (unsigned long)__va(start); |
| 59 | initrd_end = (unsigned long)__va(end); |
| 60 | initrd_below_start_ok = 1; |
| 61 | } |
| 62 | #endif |
| 63 | |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 64 | void __init add_dtb(u64 data) |
| 65 | { |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 66 | initial_dtb = data + offsetof(struct setup_data, data); |
| 67 | } |
| 68 | |
Sebastian Andrzej Siewior | 9079b35 | 2011-02-22 21:07:43 +0100 | [diff] [blame] | 69 | /* |
| 70 | * CE4100 ids. Will be moved to machine_device_initcall() once we have it. |
| 71 | */ |
| 72 | static struct of_device_id __initdata ce4100_ids[] = { |
| 73 | { .compatible = "intel,ce4100-cp", }, |
| 74 | { .compatible = "isa", }, |
| 75 | { .compatible = "pci", }, |
| 76 | {}, |
| 77 | }; |
| 78 | |
| 79 | static int __init add_bus_probe(void) |
| 80 | { |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 81 | if (!of_have_populated_dt()) |
Sebastian Andrzej Siewior | 9079b35 | 2011-02-22 21:07:43 +0100 | [diff] [blame] | 82 | return 0; |
| 83 | |
| 84 | return of_platform_bus_probe(NULL, ce4100_ids, NULL); |
| 85 | } |
| 86 | module_init(add_bus_probe); |
| 87 | |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 88 | #ifdef CONFIG_PCI |
Benjamin Herrenschmidt | 3d5fe5a | 2011-04-11 11:19:09 +1000 | [diff] [blame] | 89 | struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) |
| 90 | { |
| 91 | struct device_node *np; |
| 92 | |
| 93 | for_each_node_by_type(np, "pci") { |
| 94 | const void *prop; |
| 95 | unsigned int bus_min; |
| 96 | |
| 97 | prop = of_get_property(np, "bus-range", NULL); |
| 98 | if (!prop) |
| 99 | continue; |
| 100 | bus_min = be32_to_cpup(prop); |
| 101 | if (bus->number == bus_min) |
| 102 | return np; |
| 103 | } |
| 104 | return NULL; |
| 105 | } |
| 106 | |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 107 | static int x86_of_pci_irq_enable(struct pci_dev *dev) |
| 108 | { |
| 109 | struct of_irq oirq; |
| 110 | u32 virq; |
| 111 | int ret; |
| 112 | u8 pin; |
| 113 | |
| 114 | ret = pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); |
| 115 | if (ret) |
| 116 | return ret; |
| 117 | if (!pin) |
| 118 | return 0; |
| 119 | |
| 120 | ret = of_irq_map_pci(dev, &oirq); |
| 121 | if (ret) |
| 122 | return ret; |
| 123 | |
| 124 | virq = irq_create_of_mapping(oirq.controller, oirq.specifier, |
| 125 | oirq.size); |
| 126 | if (virq == 0) |
| 127 | return -EINVAL; |
| 128 | dev->irq = virq; |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | static void x86_of_pci_irq_disable(struct pci_dev *dev) |
| 133 | { |
| 134 | } |
| 135 | |
| 136 | void __cpuinit x86_of_pci_init(void) |
| 137 | { |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 138 | pcibios_enable_irq = x86_of_pci_irq_enable; |
| 139 | pcibios_disable_irq = x86_of_pci_irq_disable; |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 140 | } |
| 141 | #endif |
| 142 | |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 143 | static void __init dtb_setup_hpet(void) |
| 144 | { |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 145 | #ifdef CONFIG_HPET_TIMER |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 146 | struct device_node *dn; |
| 147 | struct resource r; |
| 148 | int ret; |
| 149 | |
| 150 | dn = of_find_compatible_node(NULL, NULL, "intel,ce4100-hpet"); |
| 151 | if (!dn) |
| 152 | return; |
| 153 | ret = of_address_to_resource(dn, 0, &r); |
| 154 | if (ret) { |
| 155 | WARN_ON(1); |
| 156 | return; |
| 157 | } |
| 158 | hpet_address = r.start; |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 159 | #endif |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 160 | } |
| 161 | |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 162 | static void __init dtb_lapic_setup(void) |
| 163 | { |
| 164 | #ifdef CONFIG_X86_LOCAL_APIC |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 165 | struct device_node *dn; |
| 166 | struct resource r; |
| 167 | int ret; |
| 168 | |
| 169 | dn = of_find_compatible_node(NULL, NULL, "intel,ce4100-lapic"); |
| 170 | if (!dn) |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 171 | return; |
| 172 | |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 173 | ret = of_address_to_resource(dn, 0, &r); |
| 174 | if (WARN_ON(ret)) |
| 175 | return; |
| 176 | |
| 177 | /* Did the boot loader setup the local APIC ? */ |
| 178 | if (!cpu_has_apic) { |
| 179 | if (apic_force_enable(r.start)) |
| 180 | return; |
| 181 | } |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 182 | smp_found_config = 1; |
| 183 | pic_mode = 1; |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 184 | register_lapic_address(r.start); |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 185 | generic_processor_info(boot_cpu_physical_apicid, |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 186 | GET_APIC_VERSION(apic_read(APIC_LVR))); |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 187 | #endif |
| 188 | } |
| 189 | |
| 190 | #ifdef CONFIG_X86_IO_APIC |
| 191 | static unsigned int ioapic_id; |
| 192 | |
| 193 | static void __init dtb_add_ioapic(struct device_node *dn) |
| 194 | { |
| 195 | struct resource r; |
| 196 | int ret; |
| 197 | |
| 198 | ret = of_address_to_resource(dn, 0, &r); |
| 199 | if (ret) { |
| 200 | printk(KERN_ERR "Can't obtain address from node %s.\n", |
| 201 | dn->full_name); |
| 202 | return; |
| 203 | } |
| 204 | mp_register_ioapic(++ioapic_id, r.start, gsi_top); |
| 205 | } |
| 206 | |
| 207 | static void __init dtb_ioapic_setup(void) |
| 208 | { |
| 209 | struct device_node *dn; |
| 210 | |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 211 | for_each_compatible_node(dn, NULL, "intel,ce4100-ioapic") |
| 212 | dtb_add_ioapic(dn); |
| 213 | |
| 214 | if (nr_ioapics) { |
| 215 | of_ioapic = 1; |
| 216 | return; |
| 217 | } |
| 218 | printk(KERN_ERR "Error: No information about IO-APIC in OF.\n"); |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 219 | } |
| 220 | #else |
| 221 | static void __init dtb_ioapic_setup(void) {} |
| 222 | #endif |
| 223 | |
| 224 | static void __init dtb_apic_setup(void) |
| 225 | { |
| 226 | dtb_lapic_setup(); |
| 227 | dtb_ioapic_setup(); |
| 228 | } |
| 229 | |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 230 | #ifdef CONFIG_OF_FLATTREE |
| 231 | static void __init x86_flattree_get_config(void) |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 232 | { |
| 233 | u32 size, map_len; |
| 234 | void *new_dtb; |
| 235 | |
| 236 | if (!initial_dtb) |
| 237 | return; |
| 238 | |
| 239 | map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), |
| 240 | (u64)sizeof(struct boot_param_header)); |
| 241 | |
| 242 | initial_boot_params = early_memremap(initial_dtb, map_len); |
| 243 | size = be32_to_cpu(initial_boot_params->totalsize); |
| 244 | if (map_len < size) { |
| 245 | early_iounmap(initial_boot_params, map_len); |
| 246 | initial_boot_params = early_memremap(initial_dtb, size); |
| 247 | map_len = size; |
| 248 | } |
| 249 | |
| 250 | new_dtb = alloc_bootmem(size); |
| 251 | memcpy(new_dtb, initial_boot_params, size); |
| 252 | early_iounmap(initial_boot_params, map_len); |
| 253 | |
| 254 | initial_boot_params = new_dtb; |
| 255 | |
| 256 | /* root level address cells */ |
| 257 | of_scan_flat_dt(early_init_dt_scan_root, NULL); |
| 258 | |
| 259 | unflatten_device_tree(); |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 260 | } |
| 261 | #else |
| 262 | static inline void x86_flattree_get_config(void) { } |
| 263 | #endif |
| 264 | |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 265 | void __init x86_dtb_init(void) |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 266 | { |
| 267 | x86_flattree_get_config(); |
| 268 | |
| 269 | if (!of_have_populated_dt()) |
| 270 | return; |
| 271 | |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 272 | dtb_setup_hpet(); |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 273 | dtb_apic_setup(); |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 274 | } |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 275 | |
| 276 | #ifdef CONFIG_X86_IO_APIC |
| 277 | |
| 278 | struct of_ioapic_type { |
| 279 | u32 out_type; |
| 280 | u32 trigger; |
| 281 | u32 polarity; |
| 282 | }; |
| 283 | |
| 284 | static struct of_ioapic_type of_ioapic_type[] = |
| 285 | { |
| 286 | { |
| 287 | .out_type = IRQ_TYPE_EDGE_RISING, |
| 288 | .trigger = IOAPIC_EDGE, |
| 289 | .polarity = 1, |
| 290 | }, |
| 291 | { |
| 292 | .out_type = IRQ_TYPE_LEVEL_LOW, |
| 293 | .trigger = IOAPIC_LEVEL, |
| 294 | .polarity = 0, |
| 295 | }, |
| 296 | { |
| 297 | .out_type = IRQ_TYPE_LEVEL_HIGH, |
| 298 | .trigger = IOAPIC_LEVEL, |
| 299 | .polarity = 1, |
| 300 | }, |
| 301 | { |
| 302 | .out_type = IRQ_TYPE_EDGE_FALLING, |
| 303 | .trigger = IOAPIC_EDGE, |
| 304 | .polarity = 0, |
| 305 | }, |
| 306 | }; |
| 307 | |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 308 | static int ioapic_xlate(struct irq_domain *domain, |
| 309 | struct device_node *controller, |
| 310 | const u32 *intspec, u32 intsize, |
| 311 | irq_hw_number_t *out_hwirq, u32 *out_type) |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 312 | { |
| 313 | struct io_apic_irq_attr attr; |
| 314 | struct of_ioapic_type *it; |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 315 | u32 line, idx; |
| 316 | int rc; |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 317 | |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 318 | if (WARN_ON(intsize < 2)) |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 319 | return -EINVAL; |
| 320 | |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 321 | line = intspec[0]; |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 322 | |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 323 | if (intspec[1] >= ARRAY_SIZE(of_ioapic_type)) |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 324 | return -EINVAL; |
| 325 | |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 326 | it = &of_ioapic_type[intspec[1]]; |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 327 | |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 328 | idx = (u32) domain->host_data; |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 329 | set_io_apic_irq_attr(&attr, idx, line, it->trigger, it->polarity); |
| 330 | |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 331 | rc = io_apic_setup_irq_pin_once(irq_find_mapping(domain, line), |
| 332 | cpu_to_node(0), &attr); |
| 333 | if (rc) |
| 334 | return rc; |
| 335 | |
| 336 | *out_hwirq = line; |
| 337 | *out_type = it->out_type; |
| 338 | return 0; |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 339 | } |
| 340 | |
Grant Likely | b4e5185 | 2011-12-16 15:50:17 -0700 | [diff] [blame] | 341 | const struct irq_domain_ops ioapic_irq_domain_ops = { |
| 342 | .xlate = ioapic_xlate, |
| 343 | }; |
| 344 | |
Sebastian Andrzej Siewior | ece3234 | 2012-08-13 22:23:33 +0200 | [diff] [blame] | 345 | static void dt_add_ioapic_domain(unsigned int ioapic_num, |
| 346 | struct device_node *np) |
| 347 | { |
| 348 | struct irq_domain *id; |
| 349 | struct mp_ioapic_gsi *gsi_cfg; |
| 350 | int ret; |
| 351 | int num; |
| 352 | |
| 353 | gsi_cfg = mp_ioapic_gsi_routing(ioapic_num); |
| 354 | num = gsi_cfg->gsi_end - gsi_cfg->gsi_base + 1; |
| 355 | |
| 356 | id = irq_domain_add_linear(np, num, &ioapic_irq_domain_ops, |
| 357 | (void *)ioapic_num); |
| 358 | BUG_ON(!id); |
| 359 | if (gsi_cfg->gsi_base == 0) { |
| 360 | /* |
| 361 | * The first NR_IRQS_LEGACY irq descs are allocated in |
| 362 | * early_irq_init() and need just a mapping. The |
| 363 | * remaining irqs need both. All of them are preallocated |
| 364 | * and assigned so we can keep the 1:1 mapping which the ioapic |
| 365 | * is having. |
| 366 | */ |
| 367 | ret = irq_domain_associate_many(id, 0, 0, NR_IRQS_LEGACY); |
| 368 | if (ret) |
| 369 | pr_err("Error mapping legacy IRQs: %d\n", ret); |
| 370 | |
| 371 | if (num > NR_IRQS_LEGACY) { |
| 372 | ret = irq_create_strict_mappings(id, NR_IRQS_LEGACY, |
| 373 | NR_IRQS_LEGACY, num - NR_IRQS_LEGACY); |
| 374 | if (ret) |
| 375 | pr_err("Error creating mapping for the " |
| 376 | "remaining IRQs: %d\n", ret); |
| 377 | } |
| 378 | irq_set_default_host(id); |
| 379 | } else { |
| 380 | ret = irq_create_strict_mappings(id, gsi_cfg->gsi_base, 0, num); |
| 381 | if (ret) |
| 382 | pr_err("Error creating IRQ mapping: %d\n", ret); |
| 383 | } |
| 384 | } |
| 385 | |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 386 | static void __init ioapic_add_ofnode(struct device_node *np) |
| 387 | { |
| 388 | struct resource r; |
| 389 | int i, ret; |
| 390 | |
| 391 | ret = of_address_to_resource(np, 0, &r); |
| 392 | if (ret) { |
| 393 | printk(KERN_ERR "Failed to obtain address for %s\n", |
| 394 | np->full_name); |
| 395 | return; |
| 396 | } |
| 397 | |
| 398 | for (i = 0; i < nr_ioapics; i++) { |
Suresh Siddha | d537143 | 2011-05-18 16:31:37 -0700 | [diff] [blame] | 399 | if (r.start == mpc_ioapic_addr(i)) { |
Sebastian Andrzej Siewior | ece3234 | 2012-08-13 22:23:33 +0200 | [diff] [blame] | 400 | dt_add_ioapic_domain(i, np); |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 401 | return; |
| 402 | } |
| 403 | } |
| 404 | printk(KERN_ERR "IOxAPIC at %s is not registered.\n", np->full_name); |
| 405 | } |
| 406 | |
| 407 | void __init x86_add_irq_domains(void) |
| 408 | { |
| 409 | struct device_node *dp; |
| 410 | |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 411 | if (!of_have_populated_dt()) |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 412 | return; |
| 413 | |
| 414 | for_each_node_with_property(dp, "interrupt-controller") { |
| 415 | if (of_device_is_compatible(dp, "intel,ce4100-ioapic")) |
| 416 | ioapic_add_ofnode(dp); |
| 417 | } |
| 418 | } |
| 419 | #else |
| 420 | void __init x86_add_irq_domains(void) { } |
| 421 | #endif |