114a43e69SBenjamin Herrenschmidt /* 214a43e69SBenjamin Herrenschmidt * PowerNV OPAL high level interfaces 314a43e69SBenjamin Herrenschmidt * 414a43e69SBenjamin Herrenschmidt * Copyright 2011 IBM Corp. 514a43e69SBenjamin Herrenschmidt * 614a43e69SBenjamin Herrenschmidt * This program is free software; you can redistribute it and/or 714a43e69SBenjamin Herrenschmidt * modify it under the terms of the GNU General Public License 814a43e69SBenjamin Herrenschmidt * as published by the Free Software Foundation; either version 914a43e69SBenjamin Herrenschmidt * 2 of the License, or (at your option) any later version. 1014a43e69SBenjamin Herrenschmidt */ 1114a43e69SBenjamin Herrenschmidt 1214a43e69SBenjamin Herrenschmidt #undef DEBUG 1314a43e69SBenjamin Herrenschmidt 1414a43e69SBenjamin Herrenschmidt #include <linux/types.h> 1514a43e69SBenjamin Herrenschmidt #include <linux/of.h> 1614a43e69SBenjamin Herrenschmidt #include <linux/of_platform.h> 17a125e092SBenjamin Herrenschmidt #include <linux/interrupt.h> 1814a43e69SBenjamin Herrenschmidt #include <asm/opal.h> 1914a43e69SBenjamin Herrenschmidt #include <asm/firmware.h> 2014a43e69SBenjamin Herrenschmidt 2114a43e69SBenjamin Herrenschmidt #include "powernv.h" 2214a43e69SBenjamin Herrenschmidt 2314a43e69SBenjamin Herrenschmidt struct opal { 2414a43e69SBenjamin Herrenschmidt u64 base; 2514a43e69SBenjamin Herrenschmidt u64 entry; 2614a43e69SBenjamin Herrenschmidt } opal; 2714a43e69SBenjamin Herrenschmidt 2814a43e69SBenjamin Herrenschmidt static struct device_node *opal_node; 2914a43e69SBenjamin Herrenschmidt static DEFINE_SPINLOCK(opal_write_lock); 30ed79ba9eSBenjamin Herrenschmidt extern u64 opal_mc_secondary_handler[]; 3114a43e69SBenjamin Herrenschmidt 3214a43e69SBenjamin Herrenschmidt int __init early_init_dt_scan_opal(unsigned long node, 3314a43e69SBenjamin Herrenschmidt const char *uname, int depth, void *data) 3414a43e69SBenjamin Herrenschmidt { 3514a43e69SBenjamin Herrenschmidt const void *basep, *entryp; 3614a43e69SBenjamin Herrenschmidt unsigned long basesz, entrysz; 37ed79ba9eSBenjamin Herrenschmidt u64 glue; 3814a43e69SBenjamin Herrenschmidt 3914a43e69SBenjamin Herrenschmidt if (depth != 1 || strcmp(uname, "ibm,opal") != 0) 4014a43e69SBenjamin Herrenschmidt return 0; 4114a43e69SBenjamin Herrenschmidt 4214a43e69SBenjamin Herrenschmidt basep = of_get_flat_dt_prop(node, "opal-base-address", &basesz); 4314a43e69SBenjamin Herrenschmidt entryp = of_get_flat_dt_prop(node, "opal-entry-address", &entrysz); 4414a43e69SBenjamin Herrenschmidt 4514a43e69SBenjamin Herrenschmidt if (!basep || !entryp) 4614a43e69SBenjamin Herrenschmidt return 1; 4714a43e69SBenjamin Herrenschmidt 4814a43e69SBenjamin Herrenschmidt opal.base = of_read_number(basep, basesz/4); 4914a43e69SBenjamin Herrenschmidt opal.entry = of_read_number(entryp, entrysz/4); 5014a43e69SBenjamin Herrenschmidt 5114a43e69SBenjamin Herrenschmidt pr_debug("OPAL Base = 0x%llx (basep=%p basesz=%ld)\n", 5214a43e69SBenjamin Herrenschmidt opal.base, basep, basesz); 5314a43e69SBenjamin Herrenschmidt pr_debug("OPAL Entry = 0x%llx (entryp=%p basesz=%ld)\n", 5414a43e69SBenjamin Herrenschmidt opal.entry, entryp, entrysz); 5514a43e69SBenjamin Herrenschmidt 5614a43e69SBenjamin Herrenschmidt powerpc_firmware_features |= FW_FEATURE_OPAL; 5714a43e69SBenjamin Herrenschmidt if (of_flat_dt_is_compatible(node, "ibm,opal-v2")) { 5814a43e69SBenjamin Herrenschmidt powerpc_firmware_features |= FW_FEATURE_OPALv2; 5914a43e69SBenjamin Herrenschmidt printk("OPAL V2 detected !\n"); 6014a43e69SBenjamin Herrenschmidt } else { 6114a43e69SBenjamin Herrenschmidt printk("OPAL V1 detected !\n"); 6214a43e69SBenjamin Herrenschmidt } 6314a43e69SBenjamin Herrenschmidt 64ed79ba9eSBenjamin Herrenschmidt /* Hookup some exception handlers. We use the fwnmi area at 0x7000 65ed79ba9eSBenjamin Herrenschmidt * to provide the glue space to OPAL 66ed79ba9eSBenjamin Herrenschmidt */ 67ed79ba9eSBenjamin Herrenschmidt glue = 0x7000; 68ed79ba9eSBenjamin Herrenschmidt opal_register_exception_handler(OPAL_MACHINE_CHECK_HANDLER, 69ed79ba9eSBenjamin Herrenschmidt __pa(opal_mc_secondary_handler[0]), 70ed79ba9eSBenjamin Herrenschmidt glue); 71ed79ba9eSBenjamin Herrenschmidt glue += 128; 72ed79ba9eSBenjamin Herrenschmidt opal_register_exception_handler(OPAL_HYPERVISOR_MAINTENANCE_HANDLER, 73ed79ba9eSBenjamin Herrenschmidt 0, glue); 74ed79ba9eSBenjamin Herrenschmidt glue += 128; 75ed79ba9eSBenjamin Herrenschmidt opal_register_exception_handler(OPAL_SOFTPATCH_HANDLER, 0, glue); 76ed79ba9eSBenjamin Herrenschmidt 7714a43e69SBenjamin Herrenschmidt return 1; 7814a43e69SBenjamin Herrenschmidt } 7914a43e69SBenjamin Herrenschmidt 8014a43e69SBenjamin Herrenschmidt int opal_get_chars(uint32_t vtermno, char *buf, int count) 8114a43e69SBenjamin Herrenschmidt { 8214a43e69SBenjamin Herrenschmidt s64 len, rc; 8314a43e69SBenjamin Herrenschmidt u64 evt; 8414a43e69SBenjamin Herrenschmidt 8514a43e69SBenjamin Herrenschmidt if (!opal.entry) 86daea1175SBenjamin Herrenschmidt return -ENODEV; 8714a43e69SBenjamin Herrenschmidt opal_poll_events(&evt); 8814a43e69SBenjamin Herrenschmidt if ((evt & OPAL_EVENT_CONSOLE_INPUT) == 0) 8914a43e69SBenjamin Herrenschmidt return 0; 9014a43e69SBenjamin Herrenschmidt len = count; 9114a43e69SBenjamin Herrenschmidt rc = opal_console_read(vtermno, &len, buf); 9214a43e69SBenjamin Herrenschmidt if (rc == OPAL_SUCCESS) 9314a43e69SBenjamin Herrenschmidt return len; 9414a43e69SBenjamin Herrenschmidt return 0; 9514a43e69SBenjamin Herrenschmidt } 9614a43e69SBenjamin Herrenschmidt 9714a43e69SBenjamin Herrenschmidt int opal_put_chars(uint32_t vtermno, const char *data, int total_len) 9814a43e69SBenjamin Herrenschmidt { 9914a43e69SBenjamin Herrenschmidt int written = 0; 100daea1175SBenjamin Herrenschmidt s64 len, rc; 10114a43e69SBenjamin Herrenschmidt unsigned long flags; 10214a43e69SBenjamin Herrenschmidt u64 evt; 10314a43e69SBenjamin Herrenschmidt 10414a43e69SBenjamin Herrenschmidt if (!opal.entry) 105daea1175SBenjamin Herrenschmidt return -ENODEV; 10614a43e69SBenjamin Herrenschmidt 10714a43e69SBenjamin Herrenschmidt /* We want put_chars to be atomic to avoid mangling of hvsi 10814a43e69SBenjamin Herrenschmidt * packets. To do that, we first test for room and return 109daea1175SBenjamin Herrenschmidt * -EAGAIN if there isn't enough. 110daea1175SBenjamin Herrenschmidt * 111daea1175SBenjamin Herrenschmidt * Unfortunately, opal_console_write_buffer_space() doesn't 112daea1175SBenjamin Herrenschmidt * appear to work on opal v1, so we just assume there is 113daea1175SBenjamin Herrenschmidt * enough room and be done with it 11414a43e69SBenjamin Herrenschmidt */ 11514a43e69SBenjamin Herrenschmidt spin_lock_irqsave(&opal_write_lock, flags); 116daea1175SBenjamin Herrenschmidt if (firmware_has_feature(FW_FEATURE_OPALv2)) { 11714a43e69SBenjamin Herrenschmidt rc = opal_console_write_buffer_space(vtermno, &len); 11814a43e69SBenjamin Herrenschmidt if (rc || len < total_len) { 11914a43e69SBenjamin Herrenschmidt spin_unlock_irqrestore(&opal_write_lock, flags); 12014a43e69SBenjamin Herrenschmidt /* Closed -> drop characters */ 12114a43e69SBenjamin Herrenschmidt if (rc) 12214a43e69SBenjamin Herrenschmidt return total_len; 12314a43e69SBenjamin Herrenschmidt opal_poll_events(&evt); 12414a43e69SBenjamin Herrenschmidt return -EAGAIN; 12514a43e69SBenjamin Herrenschmidt } 126daea1175SBenjamin Herrenschmidt } 12714a43e69SBenjamin Herrenschmidt 12814a43e69SBenjamin Herrenschmidt /* We still try to handle partial completions, though they 12914a43e69SBenjamin Herrenschmidt * should no longer happen. 13014a43e69SBenjamin Herrenschmidt */ 131daea1175SBenjamin Herrenschmidt rc = OPAL_BUSY; 13214a43e69SBenjamin Herrenschmidt while(total_len > 0 && (rc == OPAL_BUSY || 13314a43e69SBenjamin Herrenschmidt rc == OPAL_BUSY_EVENT || rc == OPAL_SUCCESS)) { 13414a43e69SBenjamin Herrenschmidt len = total_len; 13514a43e69SBenjamin Herrenschmidt rc = opal_console_write(vtermno, &len, data); 13614a43e69SBenjamin Herrenschmidt if (rc == OPAL_SUCCESS) { 13714a43e69SBenjamin Herrenschmidt total_len -= len; 13814a43e69SBenjamin Herrenschmidt data += len; 13914a43e69SBenjamin Herrenschmidt written += len; 14014a43e69SBenjamin Herrenschmidt } 14114a43e69SBenjamin Herrenschmidt /* This is a bit nasty but we need that for the console to 14214a43e69SBenjamin Herrenschmidt * flush when there aren't any interrupts. We will clean 14314a43e69SBenjamin Herrenschmidt * things a bit later to limit that to synchronous path 14414a43e69SBenjamin Herrenschmidt * such as the kernel console and xmon/udbg 14514a43e69SBenjamin Herrenschmidt */ 14614a43e69SBenjamin Herrenschmidt do 14714a43e69SBenjamin Herrenschmidt opal_poll_events(&evt); 14814a43e69SBenjamin Herrenschmidt while(rc == OPAL_SUCCESS && (evt & OPAL_EVENT_CONSOLE_OUTPUT)); 14914a43e69SBenjamin Herrenschmidt } 15014a43e69SBenjamin Herrenschmidt spin_unlock_irqrestore(&opal_write_lock, flags); 15114a43e69SBenjamin Herrenschmidt return written; 15214a43e69SBenjamin Herrenschmidt } 15314a43e69SBenjamin Herrenschmidt 154ed79ba9eSBenjamin Herrenschmidt int opal_machine_check(struct pt_regs *regs) 155ed79ba9eSBenjamin Herrenschmidt { 156ed79ba9eSBenjamin Herrenschmidt struct opal_machine_check_event *opal_evt = get_paca()->opal_mc_evt; 157ed79ba9eSBenjamin Herrenschmidt struct opal_machine_check_event evt; 158ed79ba9eSBenjamin Herrenschmidt const char *level, *sevstr, *subtype; 159ed79ba9eSBenjamin Herrenschmidt static const char *opal_mc_ue_types[] = { 160ed79ba9eSBenjamin Herrenschmidt "Indeterminate", 161ed79ba9eSBenjamin Herrenschmidt "Instruction fetch", 162ed79ba9eSBenjamin Herrenschmidt "Page table walk ifetch", 163ed79ba9eSBenjamin Herrenschmidt "Load/Store", 164ed79ba9eSBenjamin Herrenschmidt "Page table walk Load/Store", 165ed79ba9eSBenjamin Herrenschmidt }; 166ed79ba9eSBenjamin Herrenschmidt static const char *opal_mc_slb_types[] = { 167ed79ba9eSBenjamin Herrenschmidt "Indeterminate", 168ed79ba9eSBenjamin Herrenschmidt "Parity", 169ed79ba9eSBenjamin Herrenschmidt "Multihit", 170ed79ba9eSBenjamin Herrenschmidt }; 171ed79ba9eSBenjamin Herrenschmidt static const char *opal_mc_erat_types[] = { 172ed79ba9eSBenjamin Herrenschmidt "Indeterminate", 173ed79ba9eSBenjamin Herrenschmidt "Parity", 174ed79ba9eSBenjamin Herrenschmidt "Multihit", 175ed79ba9eSBenjamin Herrenschmidt }; 176ed79ba9eSBenjamin Herrenschmidt static const char *opal_mc_tlb_types[] = { 177ed79ba9eSBenjamin Herrenschmidt "Indeterminate", 178ed79ba9eSBenjamin Herrenschmidt "Parity", 179ed79ba9eSBenjamin Herrenschmidt "Multihit", 180ed79ba9eSBenjamin Herrenschmidt }; 181ed79ba9eSBenjamin Herrenschmidt 182ed79ba9eSBenjamin Herrenschmidt /* Copy the event structure and release the original */ 183ed79ba9eSBenjamin Herrenschmidt evt = *opal_evt; 184ed79ba9eSBenjamin Herrenschmidt opal_evt->in_use = 0; 185ed79ba9eSBenjamin Herrenschmidt 186ed79ba9eSBenjamin Herrenschmidt /* Print things out */ 187ed79ba9eSBenjamin Herrenschmidt if (evt.version != OpalMCE_V1) { 188ed79ba9eSBenjamin Herrenschmidt pr_err("Machine Check Exception, Unknown event version %d !\n", 189ed79ba9eSBenjamin Herrenschmidt evt.version); 190ed79ba9eSBenjamin Herrenschmidt return 0; 191ed79ba9eSBenjamin Herrenschmidt } 192ed79ba9eSBenjamin Herrenschmidt switch(evt.severity) { 193ed79ba9eSBenjamin Herrenschmidt case OpalMCE_SEV_NO_ERROR: 194ed79ba9eSBenjamin Herrenschmidt level = KERN_INFO; 195ed79ba9eSBenjamin Herrenschmidt sevstr = "Harmless"; 196ed79ba9eSBenjamin Herrenschmidt break; 197ed79ba9eSBenjamin Herrenschmidt case OpalMCE_SEV_WARNING: 198ed79ba9eSBenjamin Herrenschmidt level = KERN_WARNING; 199ed79ba9eSBenjamin Herrenschmidt sevstr = ""; 200ed79ba9eSBenjamin Herrenschmidt break; 201ed79ba9eSBenjamin Herrenschmidt case OpalMCE_SEV_ERROR_SYNC: 202ed79ba9eSBenjamin Herrenschmidt level = KERN_ERR; 203ed79ba9eSBenjamin Herrenschmidt sevstr = "Severe"; 204ed79ba9eSBenjamin Herrenschmidt break; 205ed79ba9eSBenjamin Herrenschmidt case OpalMCE_SEV_FATAL: 206ed79ba9eSBenjamin Herrenschmidt default: 207ed79ba9eSBenjamin Herrenschmidt level = KERN_ERR; 208ed79ba9eSBenjamin Herrenschmidt sevstr = "Fatal"; 209ed79ba9eSBenjamin Herrenschmidt break; 210ed79ba9eSBenjamin Herrenschmidt } 211ed79ba9eSBenjamin Herrenschmidt 212ed79ba9eSBenjamin Herrenschmidt printk("%s%s Machine check interrupt [%s]\n", level, sevstr, 213ed79ba9eSBenjamin Herrenschmidt evt.disposition == OpalMCE_DISPOSITION_RECOVERED ? 214ed79ba9eSBenjamin Herrenschmidt "Recovered" : "[Not recovered"); 215ed79ba9eSBenjamin Herrenschmidt printk("%s Initiator: %s\n", level, 216ed79ba9eSBenjamin Herrenschmidt evt.initiator == OpalMCE_INITIATOR_CPU ? "CPU" : "Unknown"); 217ed79ba9eSBenjamin Herrenschmidt switch(evt.error_type) { 218ed79ba9eSBenjamin Herrenschmidt case OpalMCE_ERROR_TYPE_UE: 219ed79ba9eSBenjamin Herrenschmidt subtype = evt.u.ue_error.ue_error_type < 220ed79ba9eSBenjamin Herrenschmidt ARRAY_SIZE(opal_mc_ue_types) ? 221ed79ba9eSBenjamin Herrenschmidt opal_mc_ue_types[evt.u.ue_error.ue_error_type] 222ed79ba9eSBenjamin Herrenschmidt : "Unknown"; 223ed79ba9eSBenjamin Herrenschmidt printk("%s Error type: UE [%s]\n", level, subtype); 224ed79ba9eSBenjamin Herrenschmidt if (evt.u.ue_error.effective_address_provided) 225ed79ba9eSBenjamin Herrenschmidt printk("%s Effective address: %016llx\n", 226ed79ba9eSBenjamin Herrenschmidt level, evt.u.ue_error.effective_address); 227ed79ba9eSBenjamin Herrenschmidt if (evt.u.ue_error.physical_address_provided) 228ed79ba9eSBenjamin Herrenschmidt printk("%s Physial address: %016llx\n", 229ed79ba9eSBenjamin Herrenschmidt level, evt.u.ue_error.physical_address); 230ed79ba9eSBenjamin Herrenschmidt break; 231ed79ba9eSBenjamin Herrenschmidt case OpalMCE_ERROR_TYPE_SLB: 232ed79ba9eSBenjamin Herrenschmidt subtype = evt.u.slb_error.slb_error_type < 233ed79ba9eSBenjamin Herrenschmidt ARRAY_SIZE(opal_mc_slb_types) ? 234ed79ba9eSBenjamin Herrenschmidt opal_mc_slb_types[evt.u.slb_error.slb_error_type] 235ed79ba9eSBenjamin Herrenschmidt : "Unknown"; 236ed79ba9eSBenjamin Herrenschmidt printk("%s Error type: SLB [%s]\n", level, subtype); 237ed79ba9eSBenjamin Herrenschmidt if (evt.u.slb_error.effective_address_provided) 238ed79ba9eSBenjamin Herrenschmidt printk("%s Effective address: %016llx\n", 239ed79ba9eSBenjamin Herrenschmidt level, evt.u.slb_error.effective_address); 240ed79ba9eSBenjamin Herrenschmidt break; 241ed79ba9eSBenjamin Herrenschmidt case OpalMCE_ERROR_TYPE_ERAT: 242ed79ba9eSBenjamin Herrenschmidt subtype = evt.u.erat_error.erat_error_type < 243ed79ba9eSBenjamin Herrenschmidt ARRAY_SIZE(opal_mc_erat_types) ? 244ed79ba9eSBenjamin Herrenschmidt opal_mc_erat_types[evt.u.erat_error.erat_error_type] 245ed79ba9eSBenjamin Herrenschmidt : "Unknown"; 246ed79ba9eSBenjamin Herrenschmidt printk("%s Error type: ERAT [%s]\n", level, subtype); 247ed79ba9eSBenjamin Herrenschmidt if (evt.u.erat_error.effective_address_provided) 248ed79ba9eSBenjamin Herrenschmidt printk("%s Effective address: %016llx\n", 249ed79ba9eSBenjamin Herrenschmidt level, evt.u.erat_error.effective_address); 250ed79ba9eSBenjamin Herrenschmidt break; 251ed79ba9eSBenjamin Herrenschmidt case OpalMCE_ERROR_TYPE_TLB: 252ed79ba9eSBenjamin Herrenschmidt subtype = evt.u.tlb_error.tlb_error_type < 253ed79ba9eSBenjamin Herrenschmidt ARRAY_SIZE(opal_mc_tlb_types) ? 254ed79ba9eSBenjamin Herrenschmidt opal_mc_tlb_types[evt.u.tlb_error.tlb_error_type] 255ed79ba9eSBenjamin Herrenschmidt : "Unknown"; 256ed79ba9eSBenjamin Herrenschmidt printk("%s Error type: TLB [%s]\n", level, subtype); 257ed79ba9eSBenjamin Herrenschmidt if (evt.u.tlb_error.effective_address_provided) 258ed79ba9eSBenjamin Herrenschmidt printk("%s Effective address: %016llx\n", 259ed79ba9eSBenjamin Herrenschmidt level, evt.u.tlb_error.effective_address); 260ed79ba9eSBenjamin Herrenschmidt break; 261ed79ba9eSBenjamin Herrenschmidt default: 262ed79ba9eSBenjamin Herrenschmidt case OpalMCE_ERROR_TYPE_UNKNOWN: 263ed79ba9eSBenjamin Herrenschmidt printk("%s Error type: Unknown\n", level); 264ed79ba9eSBenjamin Herrenschmidt break; 265ed79ba9eSBenjamin Herrenschmidt } 266ed79ba9eSBenjamin Herrenschmidt return evt.severity == OpalMCE_SEV_FATAL ? 0 : 1; 267ed79ba9eSBenjamin Herrenschmidt } 268ed79ba9eSBenjamin Herrenschmidt 269a125e092SBenjamin Herrenschmidt static irqreturn_t opal_interrupt(int irq, void *data) 270a125e092SBenjamin Herrenschmidt { 271a125e092SBenjamin Herrenschmidt uint64_t events; 272a125e092SBenjamin Herrenschmidt 273a125e092SBenjamin Herrenschmidt opal_handle_interrupt(virq_to_hw(irq), &events); 274a125e092SBenjamin Herrenschmidt 275a125e092SBenjamin Herrenschmidt /* XXX TODO: Do something with the events */ 276a125e092SBenjamin Herrenschmidt 277a125e092SBenjamin Herrenschmidt return IRQ_HANDLED; 278a125e092SBenjamin Herrenschmidt } 279a125e092SBenjamin Herrenschmidt 28014a43e69SBenjamin Herrenschmidt static int __init opal_init(void) 28114a43e69SBenjamin Herrenschmidt { 28214a43e69SBenjamin Herrenschmidt struct device_node *np, *consoles; 283a125e092SBenjamin Herrenschmidt const u32 *irqs; 284a125e092SBenjamin Herrenschmidt int rc, i, irqlen; 28514a43e69SBenjamin Herrenschmidt 28614a43e69SBenjamin Herrenschmidt opal_node = of_find_node_by_path("/ibm,opal"); 28714a43e69SBenjamin Herrenschmidt if (!opal_node) { 28814a43e69SBenjamin Herrenschmidt pr_warn("opal: Node not found\n"); 28914a43e69SBenjamin Herrenschmidt return -ENODEV; 29014a43e69SBenjamin Herrenschmidt } 29114a43e69SBenjamin Herrenschmidt if (firmware_has_feature(FW_FEATURE_OPALv2)) 29214a43e69SBenjamin Herrenschmidt consoles = of_find_node_by_path("/ibm,opal/consoles"); 29314a43e69SBenjamin Herrenschmidt else 29414a43e69SBenjamin Herrenschmidt consoles = of_node_get(opal_node); 29514a43e69SBenjamin Herrenschmidt 29614a43e69SBenjamin Herrenschmidt /* Register serial ports */ 29714a43e69SBenjamin Herrenschmidt for_each_child_of_node(consoles, np) { 29814a43e69SBenjamin Herrenschmidt if (strcmp(np->name, "serial")) 29914a43e69SBenjamin Herrenschmidt continue; 30014a43e69SBenjamin Herrenschmidt of_platform_device_create(np, NULL, NULL); 30114a43e69SBenjamin Herrenschmidt } 30214a43e69SBenjamin Herrenschmidt of_node_put(consoles); 303a125e092SBenjamin Herrenschmidt 304a125e092SBenjamin Herrenschmidt /* Find all OPAL interrupts and request them */ 305a125e092SBenjamin Herrenschmidt irqs = of_get_property(opal_node, "opal-interrupts", &irqlen); 306a125e092SBenjamin Herrenschmidt pr_debug("opal: Found %d interrupts reserved for OPAL\n", 307a125e092SBenjamin Herrenschmidt irqs ? (irqlen / 4) : 0); 308a125e092SBenjamin Herrenschmidt for (i = 0; irqs && i < (irqlen / 4); i++, irqs++) { 309a125e092SBenjamin Herrenschmidt unsigned int hwirq = be32_to_cpup(irqs); 310a125e092SBenjamin Herrenschmidt unsigned int irq = irq_create_mapping(NULL, hwirq); 311a125e092SBenjamin Herrenschmidt if (irq == NO_IRQ) { 312a125e092SBenjamin Herrenschmidt pr_warning("opal: Failed to map irq 0x%x\n", hwirq); 313a125e092SBenjamin Herrenschmidt continue; 314a125e092SBenjamin Herrenschmidt } 315a125e092SBenjamin Herrenschmidt rc = request_irq(irq, opal_interrupt, 0, "opal", NULL); 316a125e092SBenjamin Herrenschmidt if (rc) 317a125e092SBenjamin Herrenschmidt pr_warning("opal: Error %d requesting irq %d" 318a125e092SBenjamin Herrenschmidt " (0x%x)\n", rc, irq, hwirq); 319a125e092SBenjamin Herrenschmidt } 32014a43e69SBenjamin Herrenschmidt return 0; 32114a43e69SBenjamin Herrenschmidt } 32214a43e69SBenjamin Herrenschmidt subsys_initcall(opal_init); 323