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LoongArch: Clean up the architectural interrupt definitions

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While interrupts are assigned ECodes `64 + interrupt number`, all
existing use sites of interrupt numbers want the 64 subtracted.
Re-arrange the definitions so that the actual interrupt number is used
everywhere, and make EXCCODE_INT_END inclusive as it is more intuitive
that way.

While at it, according to the asm/loongarch.h definitions, the total
number of architectural interrupts should be 14, but various other
places indicate otherwise (13 or 15). Those places have been adjusted
to 14 as well for consistency.

Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
WANG Xuerui 2023-05-01 17:19:10 +08:00 committed by Huacai Chen
parent 3b5a5672b3
commit 9e36fa4299
5 changed files with 29 additions and 26 deletions
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45
arch/loongarch/include/asm/loongarch.h
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@ -311,8 +311,8 @@ static __always_inline void iocsr_write64(u64 val, u32 reg)
#define CSR_ECFG_VS_WIDTH 3
#define CSR_ECFG_VS (_ULCAST_(0x7) << CSR_ECFG_VS_SHIFT)
#define CSR_ECFG_IM_SHIFT 0
#define CSR_ECFG_IM_WIDTH 13
#define CSR_ECFG_IM (_ULCAST_(0x1fff) << CSR_ECFG_IM_SHIFT)
#define CSR_ECFG_IM_WIDTH 14
#define CSR_ECFG_IM (_ULCAST_(0x3fff) << CSR_ECFG_IM_SHIFT)
#define LOONGARCH_CSR_ESTAT 0x5 /* Exception status */
#define CSR_ESTAT_ESUBCODE_SHIFT 22
@ -322,8 +322,8 @@ static __always_inline void iocsr_write64(u64 val, u32 reg)
#define CSR_ESTAT_EXC_WIDTH 6
#define CSR_ESTAT_EXC (_ULCAST_(0x3f) << CSR_ESTAT_EXC_SHIFT)
#define CSR_ESTAT_IS_SHIFT 0
#define CSR_ESTAT_IS_WIDTH 15
#define CSR_ESTAT_IS (_ULCAST_(0x7fff) << CSR_ESTAT_IS_SHIFT)
#define CSR_ESTAT_IS_WIDTH 14
#define CSR_ESTAT_IS (_ULCAST_(0x3fff) << CSR_ESTAT_IS_SHIFT)
#define LOONGARCH_CSR_ERA 0x6 /* ERA */
@ -1090,7 +1090,7 @@ static __always_inline void iocsr_write64(u64 val, u32 reg)
#define ECFGF_IPI (_ULCAST_(1) << ECFGB_IPI)
#define ECFGF(hwirq) (_ULCAST_(1) << hwirq)
#define ESTATF_IP 0x00001fff
#define ESTATF_IP 0x00003fff
#define LOONGARCH_IOCSR_FEATURES 0x8
#define IOCSRF_TEMP BIT_ULL(0)
@ -1418,23 +1418,26 @@ __BUILD_CSR_OP(tlbidx)
#define EXCSUBCODE_GCHC 1 /* Hardware caused */
#define EXCCODE_SE 25 /* Security */
/* Interrupt numbers */
#define INT_SWI0 0 /* Software Interrupts */
#define INT_SWI1 1
#define INT_HWI0 2 /* Hardware Interrupts */
#define INT_HWI1 3
#define INT_HWI2 4
#define INT_HWI3 5
#define INT_HWI4 6
#define INT_HWI5 7
#define INT_HWI6 8
#define INT_HWI7 9
#define INT_PCOV 10 /* Performance Counter Overflow */
#define INT_TI 11 /* Timer */
#define INT_IPI 12
#define INT_NMI 13
/* ExcCodes corresponding to interrupts */
#define EXCCODE_INT_NUM (INT_NMI + 1)
#define EXCCODE_INT_START 64
#define EXCCODE_SIP0 64
#define EXCCODE_SIP1 65
#define EXCCODE_IP0 66
#define EXCCODE_IP1 67
#define EXCCODE_IP2 68
#define EXCCODE_IP3 69
#define EXCCODE_IP4 70
#define EXCCODE_IP5 71
#define EXCCODE_IP6 72
#define EXCCODE_IP7 73
#define EXCCODE_PMC 74 /* Performance Counter */
#define EXCCODE_TIMER 75
#define EXCCODE_IPI 76
#define EXCCODE_NMI 77
#define EXCCODE_INT_END 78
#define EXCCODE_INT_NUM (EXCCODE_INT_END - EXCCODE_INT_START)
#define EXCCODE_INT_END (EXCCODE_INT_START + EXCCODE_INT_NUM - 1)
/* FPU register names */
#define LOONGARCH_FCSR0 $r0

2
arch/loongarch/kernel/irq.c
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@ -92,7 +92,7 @@ static int __init get_ipi_irq(void)
struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY);
if (d)
return irq_create_mapping(d, EXCCODE_IPI - EXCCODE_INT_START);
return irq_create_mapping(d, INT_IPI);
return -EINVAL;
}

2
arch/loongarch/kernel/perf_event.c
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@ -461,7 +461,7 @@ static int get_pmc_irq(void)
struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY);
if (d)
return irq_create_mapping(d, EXCCODE_PMC - EXCCODE_INT_START);
return irq_create_mapping(d, INT_PCOV);
return -EINVAL;
}

2
arch/loongarch/kernel/time.c
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@ -133,7 +133,7 @@ static int get_timer_irq(void)
struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY);
if (d)
return irq_create_mapping(d, EXCCODE_TIMER - EXCCODE_INT_START);
return irq_create_mapping(d, INT_TI);
return -EINVAL;
}

2
arch/loongarch/kernel/traps.c
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@ -792,7 +792,7 @@ void __init trap_init(void)
long i;
/* Set interrupt vector handler */
for (i = EXCCODE_INT_START; i < EXCCODE_INT_END; i++)
for (i = EXCCODE_INT_START; i <= EXCCODE_INT_END; i++)
set_handler(i * VECSIZE, handle_vint, VECSIZE);
set_handler(EXCCODE_ADE * VECSIZE, handle_ade, VECSIZE);