#include <linux/random.h>
#include <linux/sched.h>
+#include <asm/irq_cpu.h>
#include <asm/mipsregs.h>
#include <asm/signal.h>
#include <asm/system.h>
#define DBG(x...)
#endif
-/* O2 irq map
+/*
+ * O2 irq map
*
* IP0 -> software (ignored)
* IP1 -> software (ignored)
* IP4 -> (irq2) X unknown
* IP5 -> (irq3) X unknown
* IP6 -> (irq4) X unknown
- * IP7 -> (irq5) 0 CPU count/compare timer (system timer)
+ * IP7 -> (irq5) 7 CPU count/compare timer (system timer)
*
* crime: (C)
*
* CRIME_INT_STAT 31:0:
*
- * 0 -> 1 Video in 1
- * 1 -> 2 Video in 2
- * 2 -> 3 Video out
- * 3 -> 4 Mace ethernet
+ * 0 -> 8 Video in 1
+ * 1 -> 9 Video in 2
+ * 2 -> 10 Video out
+ * 3 -> 11 Mace ethernet
* 4 -> S SuperIO sub-interrupt
* 5 -> M Miscellaneous sub-interrupt
* 6 -> A Audio sub-interrupt
- * 7 -> 8 PCI bridge errors
- * 8 -> 9 PCI SCSI aic7xxx 0
- * 9 -> 10 PCI SCSI aic7xxx 1
- * 10 -> 11 PCI slot 0
- * 11 -> 12 unused (PCI slot 1)
- * 12 -> 13 unused (PCI slot 2)
- * 13 -> 14 unused (PCI shared 0)
- * 14 -> 15 unused (PCI shared 1)
- * 15 -> 16 unused (PCI shared 2)
- * 16 -> 17 GBE0 (E)
- * 17 -> 18 GBE1 (E)
- * 18 -> 19 GBE2 (E)
- * 19 -> 20 GBE3 (E)
- * 20 -> 21 CPU errors
- * 21 -> 22 Memory errors
- * 22 -> 23 RE empty edge (E)
- * 23 -> 24 RE full edge (E)
- * 24 -> 25 RE idle edge (E)
- * 25 -> 26 RE empty level
- * 26 -> 27 RE full level
- * 27 -> 28 RE idle level
- * 28 -> 29 unused (software 0) (E)
- * 29 -> 30 unused (software 1) (E)
- * 30 -> 31 unused (software 2) - crime 1.5 CPU SysCorError (E)
- * 31 -> 32 VICE
+ * 7 -> 15 PCI bridge errors
+ * 8 -> 16 PCI SCSI aic7xxx 0
+ * 9 -> 17 PCI SCSI aic7xxx 1
+ * 10 -> 18 PCI slot 0
+ * 11 -> 19 unused (PCI slot 1)
+ * 12 -> 20 unused (PCI slot 2)
+ * 13 -> 21 unused (PCI shared 0)
+ * 14 -> 22 unused (PCI shared 1)
+ * 15 -> 23 unused (PCI shared 2)
+ * 16 -> 24 GBE0 (E)
+ * 17 -> 25 GBE1 (E)
+ * 18 -> 26 GBE2 (E)
+ * 19 -> 27 GBE3 (E)
+ * 20 -> 28 CPU errors
+ * 21 -> 29 Memory errors
+ * 22 -> 30 RE empty edge (E)
+ * 23 -> 31 RE full edge (E)
+ * 24 -> 32 RE idle edge (E)
+ * 25 -> 33 RE empty level
+ * 26 -> 34 RE full level
+ * 27 -> 35 RE idle level
+ * 28 -> 36 unused (software 0) (E)
+ * 29 -> 37 unused (software 1) (E)
+ * 30 -> 38 unused (software 2) - crime 1.5 CPU SysCorError (E)
+ * 31 -> 39 VICE
*
* S, M, A: Use the MACE ISA interrupt register
* MACE_ISA_INT_STAT 31:0
*
- * 0-7 -> 33-40 Audio
- * 8 -> 41 RTC
- * 9 -> 42 Keyboard
+ * 0-7 -> 40-47 Audio
+ * 8 -> 48 RTC
+ * 9 -> 49 Keyboard
* 10 -> X Keyboard polled
- * 11 -> 44 Mouse
+ * 11 -> 51 Mouse
* 12 -> X Mouse polled
- * 13-15 -> 46-48 Count/compare timers
- * 16-19 -> 49-52 Parallel (16 E)
- * 20-25 -> 53-58 Serial 1 (22 E)
- * 26-31 -> 59-64 Serial 2 (28 E)
+ * 13-15 -> 53-55 Count/compare timers
+ * 16-19 -> 56-59 Parallel (16 E)
+ * 20-25 -> 60-62 Serial 1 (22 E)
+ * 26-31 -> 66-71 Serial 2 (28 E)
*
- * Note that this means IRQs 5-7, 43, and 45 do not exist. This is a
+ * Note that this means IRQs 12-14, 50, and 52 do not exist. This is a
* different IRQ map than IRIX uses, but that's OK as Linux irq handling
* is quite different anyway.
*/
.name = "CRIME CPU error",
};
-/*
- * For interrupts wired from a single device to the CPU. Only the clock
- * uses this it seems, which is IRQ 0 and IP7.
- */
-
-static void enable_cpu_irq(unsigned int irq)
-{
- set_c0_status(STATUSF_IP7);
-}
-
-static void disable_cpu_irq(unsigned int irq)
-{
- clear_c0_status(STATUSF_IP7);
-}
-
-static void end_cpu_irq(unsigned int irq)
-{
- if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
- enable_cpu_irq(irq);
-}
-
-static struct irq_chip ip32_cpu_interrupt = {
- .name = "IP32 CPU",
- .ack = disable_cpu_irq,
- .mask = disable_cpu_irq,
- .mask_ack = disable_cpu_irq,
- .unmask = enable_cpu_irq,
- .end = end_cpu_irq,
-};
-
/*
* This is for pure CRIME interrupts - ie not MACE. The advantage?
* We get to split the register in half and do faster lookups.
uint64_t crime_int;
int irq = 0;
+ /*
+ * Sanity check interrupt numbering enum.
+ * MACE got 32 interrupts and there are 32 MACE ISA interrupts daisy
+ * chained.
+ */
+ BUILD_BUG_ON(CRIME_VICE_IRQ - MACE_VID_IN1_IRQ != 31);
+ BUILD_BUG_ON(MACEISA_SERIAL2_RDMAOR_IRQ - MACEISA_AUDIO_SW_IRQ != 31);
+
crime_int = crime->istat & crime_mask;
- irq = __ffs(crime_int);
+ irq = MACE_VID_IN1_IRQ + __ffs(crime_int);
crime_int = 1 << irq;
if (crime_int & CRIME_MACEISA_INT_MASK) {
unsigned long mace_int = mace->perif.ctrl.istat;
- irq = __ffs(mace_int & maceisa_mask) + 32;
+ irq = __ffs(mace_int & maceisa_mask) + MACEISA_AUDIO_SW_IRQ;
}
- irq++;
+
DBG("*irq %u*\n", irq);
do_IRQ(irq);
}
static void ip32_irq5(void)
{
- do_IRQ(IP32_R4K_TIMER_IRQ);
+ do_IRQ(MIPS_CPU_IRQ_BASE + 7);
}
asmlinkage void plat_irq_dispatch(void)
mace->perif.ctrl.istat = 0;
mace->perif.ctrl.imask = 0;
- for (irq = 0; irq <= IP32_IRQ_MAX; irq++) {
- struct irq_chip *controller;
-
- if (irq == IP32_R4K_TIMER_IRQ)
- controller = &ip32_cpu_interrupt;
- else if (irq <= MACE_PCI_BRIDGE_IRQ && irq >= MACE_VID_IN1_IRQ)
- controller = &ip32_mace_interrupt;
- else if (irq <= MACEPCI_SHARED2_IRQ && irq >= MACEPCI_SCSI0_IRQ)
- controller = &ip32_macepci_interrupt;
- else if (irq <= CRIME_VICE_IRQ && irq >= CRIME_GBE0_IRQ)
- controller = &ip32_crime_interrupt;
- else
- controller = &ip32_maceisa_interrupt;
-
- set_irq_chip(irq, controller);
+ mips_cpu_irq_init();
+ for (irq = MIPS_CPU_IRQ_BASE + 8; irq <= IP32_IRQ_MAX; irq++) {
+ struct irq_chip *chip;
+
+ switch (irq) {
+ case MACE_VID_IN1_IRQ ... MACE_PCI_BRIDGE_IRQ:
+ chip = &ip32_mace_interrupt;
+ break;
+ case MACEPCI_SCSI0_IRQ ... MACEPCI_SHARED2_IRQ:
+ chip = &ip32_macepci_interrupt;
+ break;
+ case CRIME_GBE0_IRQ ... CRIME_VICE_IRQ:
+ chip = &ip32_crime_interrupt;
+ break;
+ default:
+ chip = &ip32_maceisa_interrupt;
+ }
+
+ set_irq_chip(irq, chip);
}
setup_irq(CRIME_MEMERR_IRQ, &memerr_irq);
setup_irq(CRIME_CPUERR_IRQ, &cpuerr_irq);
#ifndef __ASM_IP32_INTS_H
#define __ASM_IP32_INTS_H
+#include <asm/irq.h>
+
/*
* This list reflects the assignment of interrupt numbers to
* interrupting events. Order is fairly irrelevant to handling
* priority. This differs from irix.
*/
-/* CPU */
-#define IP32_R4K_TIMER_IRQ 0
+enum ip32_irq_no {
+ /*
+ * CPU interrupts are 0 ... 7
+ */
-/* MACE */
-#define MACE_VID_IN1_IRQ 1
-#define MACE_VID_IN2_IRQ 2
-#define MACE_VID_OUT_IRQ 3
-#define MACE_ETHERNET_IRQ 4
-/* SUPERIO, MISC, and AUDIO are MACEISA */
-#define MACE_PCI_BRIDGE_IRQ 8
+ /*
+ * MACE
+ */
+ MACE_VID_IN1_IRQ = MIPS_CPU_IRQ_BASE + 8,
+ MACE_VID_IN2_IRQ,
+ MACE_VID_OUT_IRQ,
+ MACE_ETHERNET_IRQ,
+ /* SUPERIO, MISC, and AUDIO are MACEISA */
+ __MACE_SUPERIO,
+ __MACE_MISC,
+ __MACE_AUDIO,
+ MACE_PCI_BRIDGE_IRQ,
-/* MACEPCI */
-#define MACEPCI_SCSI0_IRQ 9
-#define MACEPCI_SCSI1_IRQ 10
-#define MACEPCI_SLOT0_IRQ 11
-#define MACEPCI_SLOT1_IRQ 12
-#define MACEPCI_SLOT2_IRQ 13
-#define MACEPCI_SHARED0_IRQ 14
-#define MACEPCI_SHARED1_IRQ 15
-#define MACEPCI_SHARED2_IRQ 16
+ /*
+ * MACEPCI
+ */
+ MACEPCI_SCSI0_IRQ,
+ MACEPCI_SCSI1_IRQ,
+ MACEPCI_SLOT0_IRQ,
+ MACEPCI_SLOT1_IRQ,
+ MACEPCI_SLOT2_IRQ,
+ MACEPCI_SHARED0_IRQ,
+ MACEPCI_SHARED1_IRQ,
+ MACEPCI_SHARED2_IRQ,
-/* CRIME */
-#define CRIME_GBE0_IRQ 17
-#define CRIME_GBE1_IRQ 18
-#define CRIME_GBE2_IRQ 19
-#define CRIME_GBE3_IRQ 20
-#define CRIME_CPUERR_IRQ 21
-#define CRIME_MEMERR_IRQ 22
-#define CRIME_RE_EMPTY_E_IRQ 23
-#define CRIME_RE_FULL_E_IRQ 24
-#define CRIME_RE_IDLE_E_IRQ 25
-#define CRIME_RE_EMPTY_L_IRQ 26
-#define CRIME_RE_FULL_L_IRQ 27
-#define CRIME_RE_IDLE_L_IRQ 28
-#define CRIME_SOFT0_IRQ 29
-#define CRIME_SOFT1_IRQ 30
-#define CRIME_SOFT2_IRQ 31
-#define CRIME_SYSCORERR_IRQ CRIME_SOFT2_IRQ
-#define CRIME_VICE_IRQ 32
+ /*
+ * CRIME
+ */
+ CRIME_GBE0_IRQ,
+ CRIME_GBE1_IRQ,
+ CRIME_GBE2_IRQ,
+ CRIME_GBE3_IRQ,
+ CRIME_CPUERR_IRQ,
+ CRIME_MEMERR_IRQ,
+ CRIME_RE_EMPTY_E_IRQ,
+ CRIME_RE_FULL_E_IRQ,
+ CRIME_RE_IDLE_E_IRQ,
+ CRIME_RE_EMPTY_L_IRQ,
+ CRIME_RE_FULL_L_IRQ,
+ CRIME_RE_IDLE_L_IRQ,
+ CRIME_SOFT0_IRQ,
+ CRIME_SOFT1_IRQ,
+ CRIME_SOFT2_IRQ,
+ CRIME_SYSCORERR_IRQ = CRIME_SOFT2_IRQ,
+ CRIME_VICE_IRQ,
-/* MACEISA */
-#define MACEISA_AUDIO_SW_IRQ 33
-#define MACEISA_AUDIO_SC_IRQ 34
-#define MACEISA_AUDIO1_DMAT_IRQ 35
-#define MACEISA_AUDIO1_OF_IRQ 36
-#define MACEISA_AUDIO2_DMAT_IRQ 37
-#define MACEISA_AUDIO2_MERR_IRQ 38
-#define MACEISA_AUDIO3_DMAT_IRQ 39
-#define MACEISA_AUDIO3_MERR_IRQ 40
-#define MACEISA_RTC_IRQ 41
-#define MACEISA_KEYB_IRQ 42
-/* MACEISA_KEYB_POLL is not an IRQ */
-#define MACEISA_MOUSE_IRQ 44
-/* MACEISA_MOUSE_POLL is not an IRQ */
-#define MACEISA_TIMER0_IRQ 46
-#define MACEISA_TIMER1_IRQ 47
-#define MACEISA_TIMER2_IRQ 48
-#define MACEISA_PARALLEL_IRQ 49
-#define MACEISA_PAR_CTXA_IRQ 50
-#define MACEISA_PAR_CTXB_IRQ 51
-#define MACEISA_PAR_MERR_IRQ 52
-#define MACEISA_SERIAL1_IRQ 53
-#define MACEISA_SERIAL1_TDMAT_IRQ 54
-#define MACEISA_SERIAL1_TDMAPR_IRQ 55
-#define MACEISA_SERIAL1_TDMAME_IRQ 56
-#define MACEISA_SERIAL1_RDMAT_IRQ 57
-#define MACEISA_SERIAL1_RDMAOR_IRQ 58
-#define MACEISA_SERIAL2_IRQ 59
-#define MACEISA_SERIAL2_TDMAT_IRQ 60
-#define MACEISA_SERIAL2_TDMAPR_IRQ 61
-#define MACEISA_SERIAL2_TDMAME_IRQ 62
-#define MACEISA_SERIAL2_RDMAT_IRQ 63
-#define MACEISA_SERIAL2_RDMAOR_IRQ 64
+ /*
+ * MACEISA
+ */
+ MACEISA_AUDIO_SW_IRQ,
+ MACEISA_AUDIO_SC_IRQ,
+ MACEISA_AUDIO1_DMAT_IRQ,
+ MACEISA_AUDIO1_OF_IRQ,
+ MACEISA_AUDIO2_DMAT_IRQ,
+ MACEISA_AUDIO2_MERR_IRQ,
+ MACEISA_AUDIO3_DMAT_IRQ,
+ MACEISA_AUDIO3_MERR_IRQ,
+ MACEISA_RTC_IRQ,
+ MACEISA_KEYB_IRQ,
+ /* MACEISA_KEYB_POLL is not an IRQ */
+ __MACEISA_KEYB_POLL,
+ MACEISA_MOUSE_IRQ,
+ /* MACEISA_MOUSE_POLL is not an IRQ */
+ __MACEISA_MOUSE_POLL,
+ MACEISA_TIMER0_IRQ,
+ MACEISA_TIMER1_IRQ,
+ MACEISA_TIMER2_IRQ,
+ MACEISA_PARALLEL_IRQ,
+ MACEISA_PAR_CTXA_IRQ,
+ MACEISA_PAR_CTXB_IRQ,
+ MACEISA_PAR_MERR_IRQ,
+ MACEISA_SERIAL1_IRQ,
+ MACEISA_SERIAL1_TDMAT_IRQ,
+ MACEISA_SERIAL1_TDMAPR_IRQ,
+ MACEISA_SERIAL1_TDMAME_IRQ,
+ MACEISA_SERIAL1_RDMAT_IRQ,
+ MACEISA_SERIAL1_RDMAOR_IRQ,
+ MACEISA_SERIAL2_IRQ,
+ MACEISA_SERIAL2_TDMAT_IRQ,
+ MACEISA_SERIAL2_TDMAPR_IRQ,
+ MACEISA_SERIAL2_TDMAME_IRQ,
+ MACEISA_SERIAL2_RDMAT_IRQ,
+ MACEISA_SERIAL2_RDMAOR_IRQ,
-#define IP32_IRQ_MAX MACEISA_SERIAL2_RDMAOR_IRQ
+ IP32_IRQ_MAX = MACEISA_SERIAL2_RDMAOR_IRQ
+};
#endif /* __ASM_IP32_INTS_H */
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