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> |
| 5 | #include <linux/io.h> |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 6 | #include <linux/interrupt.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 7 | #include <linux/list.h> |
| 8 | #include <linux/of.h> |
| 9 | #include <linux/of_fdt.h> |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 10 | #include <linux/of_address.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 11 | #include <linux/of_platform.h> |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 12 | #include <linux/of_irq.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 13 | #include <linux/slab.h> |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 14 | #include <linux/pci.h> |
| 15 | #include <linux/of_pci.h> |
Florian Fainelli | 977cb76 | 2011-06-06 10:15:49 +0200 | [diff] [blame] | 16 | #include <linux/initrd.h> |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 17 | |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 18 | #include <asm/hpet.h> |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 19 | #include <asm/irq_controller.h> |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 20 | #include <asm/apic.h> |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 21 | #include <asm/pci_x86.h> |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 22 | |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 23 | __initdata u64 initial_dtb; |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 24 | char __initdata cmd_line[COMMAND_LINE_SIZE]; |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 25 | static LIST_HEAD(irq_domains); |
| 26 | static DEFINE_RAW_SPINLOCK(big_irq_lock); |
| 27 | |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 28 | int __initdata of_ioapic; |
| 29 | |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 30 | #ifdef CONFIG_X86_IO_APIC |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 31 | static void add_interrupt_host(struct irq_domain *ih) |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 32 | { |
| 33 | unsigned long flags; |
| 34 | |
| 35 | raw_spin_lock_irqsave(&big_irq_lock, flags); |
| 36 | list_add(&ih->l, &irq_domains); |
| 37 | raw_spin_unlock_irqrestore(&big_irq_lock, flags); |
| 38 | } |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 39 | #endif |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 40 | |
| 41 | static struct irq_domain *get_ih_from_node(struct device_node *controller) |
| 42 | { |
| 43 | struct irq_domain *ih, *found = NULL; |
| 44 | unsigned long flags; |
| 45 | |
| 46 | raw_spin_lock_irqsave(&big_irq_lock, flags); |
| 47 | list_for_each_entry(ih, &irq_domains, l) { |
| 48 | if (ih->controller == controller) { |
| 49 | found = ih; |
| 50 | break; |
| 51 | } |
| 52 | } |
| 53 | raw_spin_unlock_irqrestore(&big_irq_lock, flags); |
| 54 | return found; |
| 55 | } |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 56 | |
| 57 | unsigned int irq_create_of_mapping(struct device_node *controller, |
| 58 | const u32 *intspec, unsigned int intsize) |
| 59 | { |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 60 | struct irq_domain *ih; |
| 61 | u32 virq, type; |
| 62 | int ret; |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 63 | |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 64 | ih = get_ih_from_node(controller); |
| 65 | if (!ih) |
| 66 | return 0; |
| 67 | ret = ih->xlate(ih, intspec, intsize, &virq, &type); |
| 68 | if (ret) |
Thomas Gleixner | 00a30b2 | 2011-03-24 22:53:10 +0100 | [diff] [blame] | 69 | return 0; |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 70 | if (type == IRQ_TYPE_NONE) |
| 71 | return virq; |
Thomas Gleixner | 07611db | 2011-03-24 21:41:57 +0100 | [diff] [blame] | 72 | irq_set_irq_type(virq, type); |
Sebastian Andrzej Siewior | 19c4f5f | 2011-02-22 21:07:39 +0100 | [diff] [blame] | 73 | return virq; |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 74 | } |
| 75 | EXPORT_SYMBOL_GPL(irq_create_of_mapping); |
| 76 | |
| 77 | unsigned long pci_address_to_pio(phys_addr_t address) |
| 78 | { |
| 79 | /* |
| 80 | * The ioport address can be directly used by inX / outX |
| 81 | */ |
| 82 | BUG_ON(address >= (1 << 16)); |
| 83 | return (unsigned long)address; |
| 84 | } |
| 85 | EXPORT_SYMBOL_GPL(pci_address_to_pio); |
| 86 | |
| 87 | void __init early_init_dt_scan_chosen_arch(unsigned long node) |
| 88 | { |
| 89 | BUG(); |
| 90 | } |
| 91 | |
| 92 | void __init early_init_dt_add_memory_arch(u64 base, u64 size) |
| 93 | { |
| 94 | BUG(); |
| 95 | } |
| 96 | |
| 97 | void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) |
| 98 | { |
| 99 | return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS)); |
| 100 | } |
| 101 | |
Florian Fainelli | 977cb76 | 2011-06-06 10:15:49 +0200 | [diff] [blame] | 102 | #ifdef CONFIG_BLK_DEV_INITRD |
| 103 | void __init early_init_dt_setup_initrd_arch(unsigned long start, |
| 104 | unsigned long end) |
| 105 | { |
| 106 | initrd_start = (unsigned long)__va(start); |
| 107 | initrd_end = (unsigned long)__va(end); |
| 108 | initrd_below_start_ok = 1; |
| 109 | } |
| 110 | #endif |
| 111 | |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 112 | void __init add_dtb(u64 data) |
| 113 | { |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 114 | initial_dtb = data + offsetof(struct setup_data, data); |
| 115 | } |
| 116 | |
Sebastian Andrzej Siewior | 9079b35 | 2011-02-22 21:07:43 +0100 | [diff] [blame] | 117 | /* |
| 118 | * CE4100 ids. Will be moved to machine_device_initcall() once we have it. |
| 119 | */ |
| 120 | static struct of_device_id __initdata ce4100_ids[] = { |
| 121 | { .compatible = "intel,ce4100-cp", }, |
| 122 | { .compatible = "isa", }, |
| 123 | { .compatible = "pci", }, |
| 124 | {}, |
| 125 | }; |
| 126 | |
| 127 | static int __init add_bus_probe(void) |
| 128 | { |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 129 | if (!of_have_populated_dt()) |
Sebastian Andrzej Siewior | 9079b35 | 2011-02-22 21:07:43 +0100 | [diff] [blame] | 130 | return 0; |
| 131 | |
| 132 | return of_platform_bus_probe(NULL, ce4100_ids, NULL); |
| 133 | } |
| 134 | module_init(add_bus_probe); |
| 135 | |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 136 | #ifdef CONFIG_PCI |
Benjamin Herrenschmidt | 3d5fe5a | 2011-04-11 11:19:09 +1000 | [diff] [blame] | 137 | struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) |
| 138 | { |
| 139 | struct device_node *np; |
| 140 | |
| 141 | for_each_node_by_type(np, "pci") { |
| 142 | const void *prop; |
| 143 | unsigned int bus_min; |
| 144 | |
| 145 | prop = of_get_property(np, "bus-range", NULL); |
| 146 | if (!prop) |
| 147 | continue; |
| 148 | bus_min = be32_to_cpup(prop); |
| 149 | if (bus->number == bus_min) |
| 150 | return np; |
| 151 | } |
| 152 | return NULL; |
| 153 | } |
| 154 | |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 155 | static int x86_of_pci_irq_enable(struct pci_dev *dev) |
| 156 | { |
| 157 | struct of_irq oirq; |
| 158 | u32 virq; |
| 159 | int ret; |
| 160 | u8 pin; |
| 161 | |
| 162 | ret = pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); |
| 163 | if (ret) |
| 164 | return ret; |
| 165 | if (!pin) |
| 166 | return 0; |
| 167 | |
| 168 | ret = of_irq_map_pci(dev, &oirq); |
| 169 | if (ret) |
| 170 | return ret; |
| 171 | |
| 172 | virq = irq_create_of_mapping(oirq.controller, oirq.specifier, |
| 173 | oirq.size); |
| 174 | if (virq == 0) |
| 175 | return -EINVAL; |
| 176 | dev->irq = virq; |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static void x86_of_pci_irq_disable(struct pci_dev *dev) |
| 181 | { |
| 182 | } |
| 183 | |
| 184 | void __cpuinit x86_of_pci_init(void) |
| 185 | { |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 186 | pcibios_enable_irq = x86_of_pci_irq_enable; |
| 187 | pcibios_disable_irq = x86_of_pci_irq_disable; |
Sebastian Andrzej Siewior | 96e0a07 | 2011-02-22 21:07:42 +0100 | [diff] [blame] | 188 | } |
| 189 | #endif |
| 190 | |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 191 | static void __init dtb_setup_hpet(void) |
| 192 | { |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 193 | #ifdef CONFIG_HPET_TIMER |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 194 | struct device_node *dn; |
| 195 | struct resource r; |
| 196 | int ret; |
| 197 | |
| 198 | dn = of_find_compatible_node(NULL, NULL, "intel,ce4100-hpet"); |
| 199 | if (!dn) |
| 200 | return; |
| 201 | ret = of_address_to_resource(dn, 0, &r); |
| 202 | if (ret) { |
| 203 | WARN_ON(1); |
| 204 | return; |
| 205 | } |
| 206 | hpet_address = r.start; |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 207 | #endif |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 208 | } |
| 209 | |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 210 | static void __init dtb_lapic_setup(void) |
| 211 | { |
| 212 | #ifdef CONFIG_X86_LOCAL_APIC |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 213 | struct device_node *dn; |
| 214 | struct resource r; |
| 215 | int ret; |
| 216 | |
| 217 | dn = of_find_compatible_node(NULL, NULL, "intel,ce4100-lapic"); |
| 218 | if (!dn) |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 219 | return; |
| 220 | |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 221 | ret = of_address_to_resource(dn, 0, &r); |
| 222 | if (WARN_ON(ret)) |
| 223 | return; |
| 224 | |
| 225 | /* Did the boot loader setup the local APIC ? */ |
| 226 | if (!cpu_has_apic) { |
| 227 | if (apic_force_enable(r.start)) |
| 228 | return; |
| 229 | } |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 230 | smp_found_config = 1; |
| 231 | pic_mode = 1; |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 232 | register_lapic_address(r.start); |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 233 | generic_processor_info(boot_cpu_physical_apicid, |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 234 | GET_APIC_VERSION(apic_read(APIC_LVR))); |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 235 | #endif |
| 236 | } |
| 237 | |
| 238 | #ifdef CONFIG_X86_IO_APIC |
| 239 | static unsigned int ioapic_id; |
| 240 | |
| 241 | static void __init dtb_add_ioapic(struct device_node *dn) |
| 242 | { |
| 243 | struct resource r; |
| 244 | int ret; |
| 245 | |
| 246 | ret = of_address_to_resource(dn, 0, &r); |
| 247 | if (ret) { |
| 248 | printk(KERN_ERR "Can't obtain address from node %s.\n", |
| 249 | dn->full_name); |
| 250 | return; |
| 251 | } |
| 252 | mp_register_ioapic(++ioapic_id, r.start, gsi_top); |
| 253 | } |
| 254 | |
| 255 | static void __init dtb_ioapic_setup(void) |
| 256 | { |
| 257 | struct device_node *dn; |
| 258 | |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 259 | for_each_compatible_node(dn, NULL, "intel,ce4100-ioapic") |
| 260 | dtb_add_ioapic(dn); |
| 261 | |
| 262 | if (nr_ioapics) { |
| 263 | of_ioapic = 1; |
| 264 | return; |
| 265 | } |
| 266 | 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] | 267 | } |
| 268 | #else |
| 269 | static void __init dtb_ioapic_setup(void) {} |
| 270 | #endif |
| 271 | |
| 272 | static void __init dtb_apic_setup(void) |
| 273 | { |
| 274 | dtb_lapic_setup(); |
| 275 | dtb_ioapic_setup(); |
| 276 | } |
| 277 | |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 278 | #ifdef CONFIG_OF_FLATTREE |
| 279 | static void __init x86_flattree_get_config(void) |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 280 | { |
| 281 | u32 size, map_len; |
| 282 | void *new_dtb; |
| 283 | |
| 284 | if (!initial_dtb) |
| 285 | return; |
| 286 | |
| 287 | map_len = max(PAGE_SIZE - (initial_dtb & ~PAGE_MASK), |
| 288 | (u64)sizeof(struct boot_param_header)); |
| 289 | |
| 290 | initial_boot_params = early_memremap(initial_dtb, map_len); |
| 291 | size = be32_to_cpu(initial_boot_params->totalsize); |
| 292 | if (map_len < size) { |
| 293 | early_iounmap(initial_boot_params, map_len); |
| 294 | initial_boot_params = early_memremap(initial_dtb, size); |
| 295 | map_len = size; |
| 296 | } |
| 297 | |
| 298 | new_dtb = alloc_bootmem(size); |
| 299 | memcpy(new_dtb, initial_boot_params, size); |
| 300 | early_iounmap(initial_boot_params, map_len); |
| 301 | |
| 302 | initial_boot_params = new_dtb; |
| 303 | |
| 304 | /* root level address cells */ |
| 305 | of_scan_flat_dt(early_init_dt_scan_root, NULL); |
| 306 | |
| 307 | unflatten_device_tree(); |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 308 | } |
| 309 | #else |
| 310 | static inline void x86_flattree_get_config(void) { } |
| 311 | #endif |
| 312 | |
Thomas Gleixner | a906fda | 2011-02-25 16:09:31 +0100 | [diff] [blame] | 313 | void __init x86_dtb_init(void) |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 314 | { |
| 315 | x86_flattree_get_config(); |
| 316 | |
| 317 | if (!of_have_populated_dt()) |
| 318 | return; |
| 319 | |
Sebastian Andrzej Siewior | ffb9fc6 | 2011-02-22 21:07:41 +0100 | [diff] [blame] | 320 | dtb_setup_hpet(); |
Sebastian Andrzej Siewior | 3879a6f | 2011-02-22 21:07:40 +0100 | [diff] [blame] | 321 | dtb_apic_setup(); |
Sebastian Andrzej Siewior | da6b737 | 2011-02-22 21:07:37 +0100 | [diff] [blame] | 322 | } |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 323 | |
| 324 | #ifdef CONFIG_X86_IO_APIC |
| 325 | |
| 326 | struct of_ioapic_type { |
| 327 | u32 out_type; |
| 328 | u32 trigger; |
| 329 | u32 polarity; |
| 330 | }; |
| 331 | |
| 332 | static struct of_ioapic_type of_ioapic_type[] = |
| 333 | { |
| 334 | { |
| 335 | .out_type = IRQ_TYPE_EDGE_RISING, |
| 336 | .trigger = IOAPIC_EDGE, |
| 337 | .polarity = 1, |
| 338 | }, |
| 339 | { |
| 340 | .out_type = IRQ_TYPE_LEVEL_LOW, |
| 341 | .trigger = IOAPIC_LEVEL, |
| 342 | .polarity = 0, |
| 343 | }, |
| 344 | { |
| 345 | .out_type = IRQ_TYPE_LEVEL_HIGH, |
| 346 | .trigger = IOAPIC_LEVEL, |
| 347 | .polarity = 1, |
| 348 | }, |
| 349 | { |
| 350 | .out_type = IRQ_TYPE_EDGE_FALLING, |
| 351 | .trigger = IOAPIC_EDGE, |
| 352 | .polarity = 0, |
| 353 | }, |
| 354 | }; |
| 355 | |
| 356 | static int ioapic_xlate(struct irq_domain *id, const u32 *intspec, u32 intsize, |
| 357 | u32 *out_hwirq, u32 *out_type) |
| 358 | { |
Suresh Siddha | c040aae | 2011-05-18 16:31:38 -0700 | [diff] [blame] | 359 | struct mp_ioapic_gsi *gsi_cfg; |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 360 | struct io_apic_irq_attr attr; |
| 361 | struct of_ioapic_type *it; |
| 362 | u32 line, idx, type; |
| 363 | |
| 364 | if (intsize < 2) |
| 365 | return -EINVAL; |
| 366 | |
| 367 | line = *intspec; |
| 368 | idx = (u32) id->priv; |
Suresh Siddha | c040aae | 2011-05-18 16:31:38 -0700 | [diff] [blame] | 369 | gsi_cfg = mp_ioapic_gsi_routing(idx); |
| 370 | *out_hwirq = line + gsi_cfg->gsi_base; |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 371 | |
| 372 | intspec++; |
| 373 | type = *intspec; |
| 374 | |
| 375 | if (type >= ARRAY_SIZE(of_ioapic_type)) |
| 376 | return -EINVAL; |
| 377 | |
| 378 | it = of_ioapic_type + type; |
| 379 | *out_type = it->out_type; |
| 380 | |
| 381 | set_io_apic_irq_attr(&attr, idx, line, it->trigger, it->polarity); |
| 382 | |
Sebastian Andrzej Siewior | 2044359 | 2011-04-27 16:30:52 +0200 | [diff] [blame] | 383 | return io_apic_setup_irq_pin_once(*out_hwirq, cpu_to_node(0), &attr); |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 384 | } |
| 385 | |
| 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 | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 400 | struct irq_domain *id; |
| 401 | |
| 402 | id = kzalloc(sizeof(*id), GFP_KERNEL); |
| 403 | BUG_ON(!id); |
| 404 | id->controller = np; |
| 405 | id->xlate = ioapic_xlate; |
| 406 | id->priv = (void *)i; |
| 407 | add_interrupt_host(id); |
| 408 | return; |
| 409 | } |
| 410 | } |
| 411 | printk(KERN_ERR "IOxAPIC at %s is not registered.\n", np->full_name); |
| 412 | } |
| 413 | |
| 414 | void __init x86_add_irq_domains(void) |
| 415 | { |
| 416 | struct device_node *dp; |
| 417 | |
Sebastian Andrzej Siewior | 4a66b1d | 2011-02-24 09:52:42 +0100 | [diff] [blame] | 418 | if (!of_have_populated_dt()) |
Sebastian Andrzej Siewior | bcc7c12 | 2011-02-22 21:07:44 +0100 | [diff] [blame] | 419 | return; |
| 420 | |
| 421 | for_each_node_with_property(dp, "interrupt-controller") { |
| 422 | if (of_device_is_compatible(dp, "intel,ce4100-ioapic")) |
| 423 | ioapic_add_ofnode(dp); |
| 424 | } |
| 425 | } |
| 426 | #else |
| 427 | void __init x86_add_irq_domains(void) { } |
| 428 | #endif |