11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * ip22-int.c: Routines for generic manipulation of the INT[23] ASIC 31da177e4SLinus Torvalds * found on INDY and Indigo2 workstations. 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) 61da177e4SLinus Torvalds * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org) 71da177e4SLinus Torvalds * Copyright (C) 1999 Andrew R. Baker (andrewb@uab.edu) 81da177e4SLinus Torvalds * - Indigo2 changes 91da177e4SLinus Torvalds * - Interrupt handling fixes 101da177e4SLinus Torvalds * Copyright (C) 2001, 2003 Ladislav Michl (ladis@linux-mips.org) 111da177e4SLinus Torvalds */ 121da177e4SLinus Torvalds #include <linux/types.h> 131da177e4SLinus Torvalds #include <linux/init.h> 141da177e4SLinus Torvalds #include <linux/kernel_stat.h> 151da177e4SLinus Torvalds #include <linux/signal.h> 161da177e4SLinus Torvalds #include <linux/sched.h> 171da177e4SLinus Torvalds #include <linux/interrupt.h> 181da177e4SLinus Torvalds #include <linux/irq.h> 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds #include <asm/mipsregs.h> 211da177e4SLinus Torvalds #include <asm/addrspace.h> 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #include <asm/sgi/ioc.h> 241da177e4SLinus Torvalds #include <asm/sgi/hpc3.h> 251da177e4SLinus Torvalds #include <asm/sgi/ip22.h> 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds /* #define DEBUG_SGINT */ 281da177e4SLinus Torvalds 291da177e4SLinus Torvalds /* So far nothing hangs here */ 301da177e4SLinus Torvalds #undef USE_LIO3_IRQ 311da177e4SLinus Torvalds 321da177e4SLinus Torvalds struct sgint_regs *sgint; 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds static char lc0msk_to_irqnr[256]; 351da177e4SLinus Torvalds static char lc1msk_to_irqnr[256]; 361da177e4SLinus Torvalds static char lc2msk_to_irqnr[256]; 371da177e4SLinus Torvalds static char lc3msk_to_irqnr[256]; 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds extern int ip22_eisa_init(void); 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds static void enable_local0_irq(unsigned int irq) 421da177e4SLinus Torvalds { 431da177e4SLinus Torvalds /* don't allow mappable interrupt to be enabled from setup_irq, 441da177e4SLinus Torvalds * we have our own way to do so */ 451da177e4SLinus Torvalds if (irq != SGI_MAP_0_IRQ) 461da177e4SLinus Torvalds sgint->imask0 |= (1 << (irq - SGINT_LOCAL0)); 471da177e4SLinus Torvalds } 481da177e4SLinus Torvalds 491da177e4SLinus Torvalds static void disable_local0_irq(unsigned int irq) 501da177e4SLinus Torvalds { 511da177e4SLinus Torvalds sgint->imask0 &= ~(1 << (irq - SGINT_LOCAL0)); 521da177e4SLinus Torvalds } 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds static void end_local0_irq (unsigned int irq) 551da177e4SLinus Torvalds { 561da177e4SLinus Torvalds if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) 571da177e4SLinus Torvalds enable_local0_irq(irq); 581da177e4SLinus Torvalds } 591da177e4SLinus Torvalds 6094dee171SRalf Baechle static struct irq_chip ip22_local0_irq_type = { 611da177e4SLinus Torvalds .typename = "IP22 local 0", 621603b5acSAtsushi Nemoto .ack = disable_local0_irq, 631603b5acSAtsushi Nemoto .mask = disable_local0_irq, 641603b5acSAtsushi Nemoto .mask_ack = disable_local0_irq, 651603b5acSAtsushi Nemoto .unmask = enable_local0_irq, 661da177e4SLinus Torvalds .end = end_local0_irq, 671da177e4SLinus Torvalds }; 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds static void enable_local1_irq(unsigned int irq) 701da177e4SLinus Torvalds { 711da177e4SLinus Torvalds /* don't allow mappable interrupt to be enabled from setup_irq, 721da177e4SLinus Torvalds * we have our own way to do so */ 731da177e4SLinus Torvalds if (irq != SGI_MAP_1_IRQ) 741da177e4SLinus Torvalds sgint->imask1 |= (1 << (irq - SGINT_LOCAL1)); 751da177e4SLinus Torvalds } 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds void disable_local1_irq(unsigned int irq) 781da177e4SLinus Torvalds { 791da177e4SLinus Torvalds sgint->imask1 &= ~(1 << (irq - SGINT_LOCAL1)); 801da177e4SLinus Torvalds } 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds static void end_local1_irq (unsigned int irq) 831da177e4SLinus Torvalds { 841da177e4SLinus Torvalds if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) 851da177e4SLinus Torvalds enable_local1_irq(irq); 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds 8894dee171SRalf Baechle static struct irq_chip ip22_local1_irq_type = { 891da177e4SLinus Torvalds .typename = "IP22 local 1", 901603b5acSAtsushi Nemoto .ack = disable_local1_irq, 911603b5acSAtsushi Nemoto .mask = disable_local1_irq, 921603b5acSAtsushi Nemoto .mask_ack = disable_local1_irq, 931603b5acSAtsushi Nemoto .unmask = enable_local1_irq, 941da177e4SLinus Torvalds .end = end_local1_irq, 951da177e4SLinus Torvalds }; 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds static void enable_local2_irq(unsigned int irq) 981da177e4SLinus Torvalds { 991da177e4SLinus Torvalds sgint->imask0 |= (1 << (SGI_MAP_0_IRQ - SGINT_LOCAL0)); 1001da177e4SLinus Torvalds sgint->cmeimask0 |= (1 << (irq - SGINT_LOCAL2)); 1011da177e4SLinus Torvalds } 1021da177e4SLinus Torvalds 1031da177e4SLinus Torvalds void disable_local2_irq(unsigned int irq) 1041da177e4SLinus Torvalds { 1051da177e4SLinus Torvalds sgint->cmeimask0 &= ~(1 << (irq - SGINT_LOCAL2)); 1061da177e4SLinus Torvalds if (!sgint->cmeimask0) 1071da177e4SLinus Torvalds sgint->imask0 &= ~(1 << (SGI_MAP_0_IRQ - SGINT_LOCAL0)); 1081da177e4SLinus Torvalds } 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds static void end_local2_irq (unsigned int irq) 1111da177e4SLinus Torvalds { 1121da177e4SLinus Torvalds if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) 1131da177e4SLinus Torvalds enable_local2_irq(irq); 1141da177e4SLinus Torvalds } 1151da177e4SLinus Torvalds 11694dee171SRalf Baechle static struct irq_chip ip22_local2_irq_type = { 1171da177e4SLinus Torvalds .typename = "IP22 local 2", 1181603b5acSAtsushi Nemoto .ack = disable_local2_irq, 1191603b5acSAtsushi Nemoto .mask = disable_local2_irq, 1201603b5acSAtsushi Nemoto .mask_ack = disable_local2_irq, 1211603b5acSAtsushi Nemoto .unmask = enable_local2_irq, 1221da177e4SLinus Torvalds .end = end_local2_irq, 1231da177e4SLinus Torvalds }; 1241da177e4SLinus Torvalds 1251da177e4SLinus Torvalds static void enable_local3_irq(unsigned int irq) 1261da177e4SLinus Torvalds { 1271da177e4SLinus Torvalds sgint->imask1 |= (1 << (SGI_MAP_1_IRQ - SGINT_LOCAL1)); 1281da177e4SLinus Torvalds sgint->cmeimask1 |= (1 << (irq - SGINT_LOCAL3)); 1291da177e4SLinus Torvalds } 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds void disable_local3_irq(unsigned int irq) 1321da177e4SLinus Torvalds { 1331da177e4SLinus Torvalds sgint->cmeimask1 &= ~(1 << (irq - SGINT_LOCAL3)); 1341da177e4SLinus Torvalds if (!sgint->cmeimask1) 1351da177e4SLinus Torvalds sgint->imask1 &= ~(1 << (SGI_MAP_1_IRQ - SGINT_LOCAL1)); 1361da177e4SLinus Torvalds } 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds static void end_local3_irq (unsigned int irq) 1391da177e4SLinus Torvalds { 1401da177e4SLinus Torvalds if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS))) 1411da177e4SLinus Torvalds enable_local3_irq(irq); 1421da177e4SLinus Torvalds } 1431da177e4SLinus Torvalds 14494dee171SRalf Baechle static struct irq_chip ip22_local3_irq_type = { 1451da177e4SLinus Torvalds .typename = "IP22 local 3", 1461603b5acSAtsushi Nemoto .ack = disable_local3_irq, 1471603b5acSAtsushi Nemoto .mask = disable_local3_irq, 1481603b5acSAtsushi Nemoto .mask_ack = disable_local3_irq, 1491603b5acSAtsushi Nemoto .unmask = enable_local3_irq, 1501da177e4SLinus Torvalds .end = end_local3_irq, 1511da177e4SLinus Torvalds }; 1521da177e4SLinus Torvalds 153937a8015SRalf Baechle static void indy_local0_irqdispatch(void) 1541da177e4SLinus Torvalds { 1551da177e4SLinus Torvalds u8 mask = sgint->istat0 & sgint->imask0; 1561da177e4SLinus Torvalds u8 mask2; 1571da177e4SLinus Torvalds int irq; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds if (mask & SGINT_ISTAT0_LIO2) { 1601da177e4SLinus Torvalds mask2 = sgint->vmeistat & sgint->cmeimask0; 1611da177e4SLinus Torvalds irq = lc2msk_to_irqnr[mask2]; 1621da177e4SLinus Torvalds } else 1631da177e4SLinus Torvalds irq = lc0msk_to_irqnr[mask]; 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvalds /* if irq == 0, then the interrupt has already been cleared */ 1661da177e4SLinus Torvalds if (irq) 167937a8015SRalf Baechle do_IRQ(irq); 1681da177e4SLinus Torvalds } 1691da177e4SLinus Torvalds 170937a8015SRalf Baechle static void indy_local1_irqdispatch(void) 1711da177e4SLinus Torvalds { 1721da177e4SLinus Torvalds u8 mask = sgint->istat1 & sgint->imask1; 1731da177e4SLinus Torvalds u8 mask2; 1741da177e4SLinus Torvalds int irq; 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds if (mask & SGINT_ISTAT1_LIO3) { 1771da177e4SLinus Torvalds mask2 = sgint->vmeistat & sgint->cmeimask1; 1781da177e4SLinus Torvalds irq = lc3msk_to_irqnr[mask2]; 1791da177e4SLinus Torvalds } else 1801da177e4SLinus Torvalds irq = lc1msk_to_irqnr[mask]; 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds /* if irq == 0, then the interrupt has already been cleared */ 1831da177e4SLinus Torvalds if (irq) 184937a8015SRalf Baechle do_IRQ(irq); 1851da177e4SLinus Torvalds } 1861da177e4SLinus Torvalds 187937a8015SRalf Baechle extern void ip22_be_interrupt(int irq); 1881da177e4SLinus Torvalds 189937a8015SRalf Baechle static void indy_buserror_irq(void) 1901da177e4SLinus Torvalds { 1911da177e4SLinus Torvalds int irq = SGI_BUSERR_IRQ; 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds irq_enter(); 1941da177e4SLinus Torvalds kstat_this_cpu.irqs[irq]++; 195937a8015SRalf Baechle ip22_be_interrupt(irq); 1961da177e4SLinus Torvalds irq_exit(); 1971da177e4SLinus Torvalds } 1981da177e4SLinus Torvalds 1991da177e4SLinus Torvalds static struct irqaction local0_cascade = { 2001da177e4SLinus Torvalds .handler = no_action, 201f40298fdSThomas Gleixner .flags = IRQF_DISABLED, 2021da177e4SLinus Torvalds .name = "local0 cascade", 2031da177e4SLinus Torvalds }; 2041da177e4SLinus Torvalds 2051da177e4SLinus Torvalds static struct irqaction local1_cascade = { 2061da177e4SLinus Torvalds .handler = no_action, 207f40298fdSThomas Gleixner .flags = IRQF_DISABLED, 2081da177e4SLinus Torvalds .name = "local1 cascade", 2091da177e4SLinus Torvalds }; 2101da177e4SLinus Torvalds 2111da177e4SLinus Torvalds static struct irqaction buserr = { 2121da177e4SLinus Torvalds .handler = no_action, 213f40298fdSThomas Gleixner .flags = IRQF_DISABLED, 2141da177e4SLinus Torvalds .name = "Bus Error", 2151da177e4SLinus Torvalds }; 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds static struct irqaction map0_cascade = { 2181da177e4SLinus Torvalds .handler = no_action, 219f40298fdSThomas Gleixner .flags = IRQF_DISABLED, 2201da177e4SLinus Torvalds .name = "mapable0 cascade", 2211da177e4SLinus Torvalds }; 2221da177e4SLinus Torvalds 2231da177e4SLinus Torvalds #ifdef USE_LIO3_IRQ 2241da177e4SLinus Torvalds static struct irqaction map1_cascade = { 2251da177e4SLinus Torvalds .handler = no_action, 226f40298fdSThomas Gleixner .flags = IRQF_DISABLED, 2271da177e4SLinus Torvalds .name = "mapable1 cascade", 2281da177e4SLinus Torvalds }; 2291da177e4SLinus Torvalds #define SGI_INTERRUPTS SGINT_END 2301da177e4SLinus Torvalds #else 2311da177e4SLinus Torvalds #define SGI_INTERRUPTS SGINT_LOCAL3 2321da177e4SLinus Torvalds #endif 2331da177e4SLinus Torvalds 234937a8015SRalf Baechle extern void indy_r4k_timer_interrupt(void); 235937a8015SRalf Baechle extern void indy_8254timer_irq(void); 236e4ac58afSRalf Baechle 237e4ac58afSRalf Baechle /* 238e4ac58afSRalf Baechle * IRQs on the INDY look basically (barring software IRQs which we don't use 239e4ac58afSRalf Baechle * at all) like: 240e4ac58afSRalf Baechle * 241e4ac58afSRalf Baechle * MIPS IRQ Source 242e4ac58afSRalf Baechle * -------- ------ 243e4ac58afSRalf Baechle * 0 Software (ignored) 244e4ac58afSRalf Baechle * 1 Software (ignored) 245e4ac58afSRalf Baechle * 2 Local IRQ level zero 246e4ac58afSRalf Baechle * 3 Local IRQ level one 247e4ac58afSRalf Baechle * 4 8254 Timer zero 248e4ac58afSRalf Baechle * 5 8254 Timer one 249e4ac58afSRalf Baechle * 6 Bus Error 250e4ac58afSRalf Baechle * 7 R4k timer (what we use) 251e4ac58afSRalf Baechle * 252e4ac58afSRalf Baechle * We handle the IRQ according to _our_ priority which is: 253e4ac58afSRalf Baechle * 254e4ac58afSRalf Baechle * Highest ---- R4k Timer 255e4ac58afSRalf Baechle * Local IRQ zero 256e4ac58afSRalf Baechle * Local IRQ one 257e4ac58afSRalf Baechle * Bus Error 258e4ac58afSRalf Baechle * 8254 Timer zero 259e4ac58afSRalf Baechle * Lowest ---- 8254 Timer one 260e4ac58afSRalf Baechle * 261e4ac58afSRalf Baechle * then we just return, if multiple IRQs are pending then we will just take 262e4ac58afSRalf Baechle * another exception, big deal. 263e4ac58afSRalf Baechle */ 264e4ac58afSRalf Baechle 265937a8015SRalf Baechle asmlinkage void plat_irq_dispatch(void) 266e4ac58afSRalf Baechle { 267e4ac58afSRalf Baechle unsigned int pending = read_c0_cause(); 268e4ac58afSRalf Baechle 269e4ac58afSRalf Baechle /* 270e4ac58afSRalf Baechle * First we check for r4k counter/timer IRQ. 271e4ac58afSRalf Baechle */ 272e4ac58afSRalf Baechle if (pending & CAUSEF_IP7) 273937a8015SRalf Baechle indy_r4k_timer_interrupt(); 274e4ac58afSRalf Baechle else if (pending & CAUSEF_IP2) 275937a8015SRalf Baechle indy_local0_irqdispatch(); 276e4ac58afSRalf Baechle else if (pending & CAUSEF_IP3) 277937a8015SRalf Baechle indy_local1_irqdispatch(); 278e4ac58afSRalf Baechle else if (pending & CAUSEF_IP6) 279937a8015SRalf Baechle indy_buserror_irq(); 280e4ac58afSRalf Baechle else if (pending & (CAUSEF_IP4 | CAUSEF_IP5)) 281937a8015SRalf Baechle indy_8254timer_irq(); 282e4ac58afSRalf Baechle } 283e4ac58afSRalf Baechle 2841da177e4SLinus Torvalds extern void mips_cpu_irq_init(unsigned int irq_base); 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds void __init arch_init_irq(void) 2871da177e4SLinus Torvalds { 2881da177e4SLinus Torvalds int i; 2891da177e4SLinus Torvalds 2901da177e4SLinus Torvalds /* Init local mask --> irq tables. */ 2911da177e4SLinus Torvalds for (i = 0; i < 256; i++) { 2921da177e4SLinus Torvalds if (i & 0x80) { 2931da177e4SLinus Torvalds lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 7; 2941da177e4SLinus Torvalds lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 7; 2951da177e4SLinus Torvalds lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 7; 2961da177e4SLinus Torvalds lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 7; 2971da177e4SLinus Torvalds } else if (i & 0x40) { 2981da177e4SLinus Torvalds lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 6; 2991da177e4SLinus Torvalds lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 6; 3001da177e4SLinus Torvalds lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 6; 3011da177e4SLinus Torvalds lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 6; 3021da177e4SLinus Torvalds } else if (i & 0x20) { 3031da177e4SLinus Torvalds lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 5; 3041da177e4SLinus Torvalds lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 5; 3051da177e4SLinus Torvalds lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 5; 3061da177e4SLinus Torvalds lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 5; 3071da177e4SLinus Torvalds } else if (i & 0x10) { 3081da177e4SLinus Torvalds lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 4; 3091da177e4SLinus Torvalds lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 4; 3101da177e4SLinus Torvalds lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 4; 3111da177e4SLinus Torvalds lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 4; 3121da177e4SLinus Torvalds } else if (i & 0x08) { 3131da177e4SLinus Torvalds lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 3; 3141da177e4SLinus Torvalds lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 3; 3151da177e4SLinus Torvalds lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 3; 3161da177e4SLinus Torvalds lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 3; 3171da177e4SLinus Torvalds } else if (i & 0x04) { 3181da177e4SLinus Torvalds lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 2; 3191da177e4SLinus Torvalds lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 2; 3201da177e4SLinus Torvalds lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 2; 3211da177e4SLinus Torvalds lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 2; 3221da177e4SLinus Torvalds } else if (i & 0x02) { 3231da177e4SLinus Torvalds lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 1; 3241da177e4SLinus Torvalds lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 1; 3251da177e4SLinus Torvalds lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 1; 3261da177e4SLinus Torvalds lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 1; 3271da177e4SLinus Torvalds } else if (i & 0x01) { 3281da177e4SLinus Torvalds lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 0; 3291da177e4SLinus Torvalds lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 0; 3301da177e4SLinus Torvalds lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 0; 3311da177e4SLinus Torvalds lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 0; 3321da177e4SLinus Torvalds } else { 3331da177e4SLinus Torvalds lc0msk_to_irqnr[i] = 0; 3341da177e4SLinus Torvalds lc1msk_to_irqnr[i] = 0; 3351da177e4SLinus Torvalds lc2msk_to_irqnr[i] = 0; 3361da177e4SLinus Torvalds lc3msk_to_irqnr[i] = 0; 3371da177e4SLinus Torvalds } 3381da177e4SLinus Torvalds } 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds /* Mask out all interrupts. */ 3411da177e4SLinus Torvalds sgint->imask0 = 0; 3421da177e4SLinus Torvalds sgint->imask1 = 0; 3431da177e4SLinus Torvalds sgint->cmeimask0 = 0; 3441da177e4SLinus Torvalds sgint->cmeimask1 = 0; 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds /* init CPU irqs */ 3471da177e4SLinus Torvalds mips_cpu_irq_init(SGINT_CPU); 3481da177e4SLinus Torvalds 3491da177e4SLinus Torvalds for (i = SGINT_LOCAL0; i < SGI_INTERRUPTS; i++) { 35094dee171SRalf Baechle struct irq_chip *handler; 3511da177e4SLinus Torvalds 3521da177e4SLinus Torvalds if (i < SGINT_LOCAL1) 3531da177e4SLinus Torvalds handler = &ip22_local0_irq_type; 3541da177e4SLinus Torvalds else if (i < SGINT_LOCAL2) 3551da177e4SLinus Torvalds handler = &ip22_local1_irq_type; 3561da177e4SLinus Torvalds else if (i < SGINT_LOCAL3) 3571da177e4SLinus Torvalds handler = &ip22_local2_irq_type; 3581da177e4SLinus Torvalds else 3591da177e4SLinus Torvalds handler = &ip22_local3_irq_type; 3601da177e4SLinus Torvalds 361*1417836eSAtsushi Nemoto set_irq_chip_and_handler(i, handler, handle_level_irq); 3621da177e4SLinus Torvalds } 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds /* vector handler. this register the IRQ as non-sharable */ 3651da177e4SLinus Torvalds setup_irq(SGI_LOCAL_0_IRQ, &local0_cascade); 3661da177e4SLinus Torvalds setup_irq(SGI_LOCAL_1_IRQ, &local1_cascade); 3671da177e4SLinus Torvalds setup_irq(SGI_BUSERR_IRQ, &buserr); 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds /* cascade in cascade. i love Indy ;-) */ 3701da177e4SLinus Torvalds setup_irq(SGI_MAP_0_IRQ, &map0_cascade); 3711da177e4SLinus Torvalds #ifdef USE_LIO3_IRQ 3721da177e4SLinus Torvalds setup_irq(SGI_MAP_1_IRQ, &map1_cascade); 3731da177e4SLinus Torvalds #endif 3741da177e4SLinus Torvalds 3751da177e4SLinus Torvalds #ifdef CONFIG_EISA 3761da177e4SLinus Torvalds if (ip22_is_fullhouse()) /* Only Indigo-2 has EISA stuff */ 3771da177e4SLinus Torvalds ip22_eisa_init (); 3781da177e4SLinus Torvalds #endif 3791da177e4SLinus Torvalds } 380