^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * ip22-int.c: Routines for generic manipulation of the INT[23] ASIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * found on INDY and Indigo2 workstations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 1997, 1998 Ralf Baechle (ralf@gnu.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 1999 Andrew R. Baker (andrewb@uab.edu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * - Indigo2 changes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * - Interrupt handling fixes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Copyright (C) 2001, 2003 Ladislav Michl (ladis@linux-mips.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/kernel_stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/ftrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/irq_cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/sgi/hpc3.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/sgi/ip22.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* So far nothing hangs here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #undef USE_LIO3_IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct sgint_regs *sgint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static char lc0msk_to_irqnr[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static char lc1msk_to_irqnr[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static char lc2msk_to_irqnr[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static char lc3msk_to_irqnr[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) extern int ip22_eisa_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static void enable_local0_irq(struct irq_data *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* don't allow mappable interrupt to be enabled from setup_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * we have our own way to do so */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (d->irq != SGI_MAP_0_IRQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) sgint->imask0 |= (1 << (d->irq - SGINT_LOCAL0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static void disable_local0_irq(struct irq_data *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) sgint->imask0 &= ~(1 << (d->irq - SGINT_LOCAL0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static struct irq_chip ip22_local0_irq_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) .name = "IP22 local 0",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) .irq_mask = disable_local0_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) .irq_unmask = enable_local0_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static void enable_local1_irq(struct irq_data *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* don't allow mappable interrupt to be enabled from setup_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * we have our own way to do so */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) if (d->irq != SGI_MAP_1_IRQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) sgint->imask1 |= (1 << (d->irq - SGINT_LOCAL1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static void disable_local1_irq(struct irq_data *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) sgint->imask1 &= ~(1 << (d->irq - SGINT_LOCAL1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static struct irq_chip ip22_local1_irq_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .name = "IP22 local 1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .irq_mask = disable_local1_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) .irq_unmask = enable_local1_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static void enable_local2_irq(struct irq_data *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) sgint->imask0 |= (1 << (SGI_MAP_0_IRQ - SGINT_LOCAL0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) sgint->cmeimask0 |= (1 << (d->irq - SGINT_LOCAL2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static void disable_local2_irq(struct irq_data *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) sgint->cmeimask0 &= ~(1 << (d->irq - SGINT_LOCAL2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (!sgint->cmeimask0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) sgint->imask0 &= ~(1 << (SGI_MAP_0_IRQ - SGINT_LOCAL0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static struct irq_chip ip22_local2_irq_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .name = "IP22 local 2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .irq_mask = disable_local2_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .irq_unmask = enable_local2_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) static void enable_local3_irq(struct irq_data *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) sgint->imask1 |= (1 << (SGI_MAP_1_IRQ - SGINT_LOCAL1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) sgint->cmeimask1 |= (1 << (d->irq - SGINT_LOCAL3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static void disable_local3_irq(struct irq_data *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) sgint->cmeimask1 &= ~(1 << (d->irq - SGINT_LOCAL3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (!sgint->cmeimask1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) sgint->imask1 &= ~(1 << (SGI_MAP_1_IRQ - SGINT_LOCAL1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static struct irq_chip ip22_local3_irq_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .name = "IP22 local 3",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .irq_mask = disable_local3_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .irq_unmask = enable_local3_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static void indy_local0_irqdispatch(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) u8 mask = sgint->istat0 & sgint->imask0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) u8 mask2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (mask & SGINT_ISTAT0_LIO2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) mask2 = sgint->vmeistat & sgint->cmeimask0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) irq = lc2msk_to_irqnr[mask2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) irq = lc0msk_to_irqnr[mask];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * workaround for INT2 bug; if irq == 0, INT2 has seen a fifo full
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * irq, but failed to latch it into status register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) do_IRQ(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) do_IRQ(SGINT_LOCAL0 + 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static void indy_local1_irqdispatch(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) u8 mask = sgint->istat1 & sgint->imask1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) u8 mask2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (mask & SGINT_ISTAT1_LIO3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) mask2 = sgint->vmeistat & sgint->cmeimask1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) irq = lc3msk_to_irqnr[mask2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) irq = lc1msk_to_irqnr[mask];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* if irq == 0, then the interrupt has already been cleared */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) do_IRQ(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) extern void ip22_be_interrupt(int irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static void __irq_entry indy_buserror_irq(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) int irq = SGI_BUSERR_IRQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) irq_enter();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) kstat_incr_irq_this_cpu(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) ip22_be_interrupt(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) irq_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #ifdef USE_LIO3_IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #define SGI_INTERRUPTS SGINT_END
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) #define SGI_INTERRUPTS SGINT_LOCAL3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) extern void indy_8254timer_irq(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * IRQs on the INDY look basically (barring software IRQs which we don't use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * at all) like:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * MIPS IRQ Source
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * -------- ------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * 0 Software (ignored)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * 1 Software (ignored)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * 2 Local IRQ level zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * 3 Local IRQ level one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * 4 8254 Timer zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * 5 8254 Timer one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * 6 Bus Error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * 7 R4k timer (what we use)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * We handle the IRQ according to _our_ priority which is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * Highest ---- R4k Timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * Local IRQ zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * Local IRQ one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * Bus Error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * 8254 Timer zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * Lowest ---- 8254 Timer one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * then we just return, if multiple IRQs are pending then we will just take
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * another exception, big deal.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) asmlinkage void plat_irq_dispatch(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) unsigned int pending = read_c0_status() & read_c0_cause();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * First we check for r4k counter/timer IRQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (pending & CAUSEF_IP7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) do_IRQ(SGI_TIMER_IRQ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) else if (pending & CAUSEF_IP2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) indy_local0_irqdispatch();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) else if (pending & CAUSEF_IP3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) indy_local1_irqdispatch();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) else if (pending & CAUSEF_IP6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) indy_buserror_irq();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) else if (pending & (CAUSEF_IP4 | CAUSEF_IP5))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) indy_8254timer_irq();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) void __init arch_init_irq(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) /* Init local mask --> irq tables. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) for (i = 0; i < 256; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (i & 0x80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) } else if (i & 0x40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) } else if (i & 0x20) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) } else if (i & 0x10) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) } else if (i & 0x08) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) } else if (i & 0x04) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) } else if (i & 0x02) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) } else if (i & 0x01) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) lc0msk_to_irqnr[i] = SGINT_LOCAL0 + 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) lc1msk_to_irqnr[i] = SGINT_LOCAL1 + 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) lc2msk_to_irqnr[i] = SGINT_LOCAL2 + 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) lc3msk_to_irqnr[i] = SGINT_LOCAL3 + 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) lc0msk_to_irqnr[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) lc1msk_to_irqnr[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) lc2msk_to_irqnr[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) lc3msk_to_irqnr[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) /* Mask out all interrupts. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) sgint->imask0 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) sgint->imask1 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) sgint->cmeimask0 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) sgint->cmeimask1 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) /* init CPU irqs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) mips_cpu_irq_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) for (i = SGINT_LOCAL0; i < SGI_INTERRUPTS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) struct irq_chip *handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (i < SGINT_LOCAL1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) handler = &ip22_local0_irq_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) else if (i < SGINT_LOCAL2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) handler = &ip22_local1_irq_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) else if (i < SGINT_LOCAL3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) handler = &ip22_local2_irq_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) handler = &ip22_local3_irq_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) irq_set_chip_and_handler(i, handler, handle_level_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) /* vector handler. this register the IRQ as non-sharable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (request_irq(SGI_LOCAL_0_IRQ, no_action, IRQF_NO_THREAD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) "local0 cascade", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) pr_err("Failed to register local0 cascade interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (request_irq(SGI_LOCAL_1_IRQ, no_action, IRQF_NO_THREAD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) "local1 cascade", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) pr_err("Failed to register local1 cascade interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) if (request_irq(SGI_BUSERR_IRQ, no_action, IRQF_NO_THREAD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) "Bus Error", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) pr_err("Failed to register Bus Error interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /* cascade in cascade. i love Indy ;-) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (request_irq(SGI_MAP_0_IRQ, no_action, IRQF_NO_THREAD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) "mapable0 cascade", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) pr_err("Failed to register mapable0 cascade interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) #ifdef USE_LIO3_IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (request_irq(SGI_MAP_1_IRQ, no_action, IRQF_NO_THREAD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) "mapable1 cascade", NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) pr_err("Failed to register mapable1 cascade interrupt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) #ifdef CONFIG_EISA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) if (ip22_is_fullhouse()) /* Only Indigo-2 has EISA stuff */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) ip22_eisa_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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