1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASM_MACH_LOONGSON64_IRQ_H_
3#define __ASM_MACH_LOONGSON64_IRQ_H_
4
5#include <linux/irqreturn.h>
6
7#define MAX_IO_PICS 2
8#define NR_IRQS	(64 + (256 * MAX_IO_PICS))
9
10#define CORES_PER_EIO_NODE	4
11
12#define LOONGSON_CPU_UART0_VEC		10 /* CPU UART0 */
13#define LOONGSON_CPU_THSENS_VEC		14 /* CPU Thsens */
14#define LOONGSON_CPU_HT0_VEC		16 /* CPU HT0 irq vector base number */
15#define LOONGSON_CPU_HT1_VEC		24 /* CPU HT1 irq vector base number */
16
17/* IRQ number definitions */
18#define LOONGSON_LPC_IRQ_BASE		0
19#define LOONGSON_LPC_LAST_IRQ		(LOONGSON_LPC_IRQ_BASE + 15)
20
21#define LOONGSON_CPU_IRQ_BASE 		16
22#define LOONGSON_CPU_LAST_IRQ 		(LOONGSON_CPU_IRQ_BASE + 14)
23
24#define LOONGSON_PCH_IRQ_BASE		64
25#define LOONGSON_PCH_ACPI_IRQ		(LOONGSON_PCH_IRQ_BASE + 47)
26#define LOONGSON_PCH_LAST_IRQ		(LOONGSON_PCH_IRQ_BASE + 64 - 1)
27
28#define LOONGSON_MSI_IRQ_BASE		(LOONGSON_PCH_IRQ_BASE + 64)
29#define LOONGSON_MSI_LAST_IRQ		(LOONGSON_PCH_IRQ_BASE + 256 - 1)
30
31#define GSI_MIN_LPC_IRQ		LOONGSON_LPC_IRQ_BASE
32#define GSI_MAX_LPC_IRQ		(LOONGSON_LPC_IRQ_BASE + 16 - 1)
33#define GSI_MIN_CPU_IRQ		LOONGSON_CPU_IRQ_BASE
34#define GSI_MAX_CPU_IRQ		(LOONGSON_CPU_IRQ_BASE + 48 - 1)
35#define GSI_MIN_PCH_IRQ		LOONGSON_PCH_IRQ_BASE
36#define GSI_MAX_PCH_IRQ		(LOONGSON_PCH_IRQ_BASE + 256 - 1)
37
38extern int find_pch_pic(u32 gsi);
39extern int eiointc_get_node(int id);
40
41static inline void eiointc_enable(void)
42{
43	uint64_t misc;
44
45	misc = iocsr_read64(LOONGARCH_IOCSR_MISC_FUNC);
46	misc |= IOCSR_MISC_FUNC_EXT_IOI_EN;
47	iocsr_write64(misc, LOONGARCH_IOCSR_MISC_FUNC);
48}
49
50struct acpi_madt_lio_pic;
51struct acpi_madt_eio_pic;
52struct acpi_madt_ht_pic;
53struct acpi_madt_bio_pic;
54struct acpi_madt_msi_pic;
55struct acpi_madt_lpc_pic;
56
57struct irq_domain *liointc_acpi_init(struct irq_domain *parent,
58					struct acpi_madt_lio_pic *acpi_liointc);
59struct irq_domain *eiointc_acpi_init(struct irq_domain *parent,
60					struct acpi_madt_eio_pic *acpi_eiointc);
61
62struct irq_domain *htvec_acpi_init(struct irq_domain *parent,
63					struct acpi_madt_ht_pic *acpi_htvec);
64struct irq_domain *pch_lpc_acpi_init(struct irq_domain *parent,
65					struct acpi_madt_lpc_pic *acpi_pchlpc);
66struct irq_domain *pch_msi_acpi_init(struct irq_domain *parent,
67					struct acpi_madt_msi_pic *acpi_pchmsi);
68struct irq_domain *pch_pic_acpi_init(struct irq_domain *parent,
69					struct acpi_madt_bio_pic *acpi_pchpic);
70
71extern struct acpi_madt_lio_pic *acpi_liointc;
72extern struct acpi_madt_eio_pic *acpi_eiointc[MAX_IO_PICS];
73
74extern struct acpi_madt_ht_pic *acpi_htintc;
75extern struct acpi_madt_lpc_pic *acpi_pchlpc;
76extern struct acpi_madt_msi_pic *acpi_pchmsi[MAX_IO_PICS];
77extern struct acpi_madt_bio_pic *acpi_pchpic[MAX_IO_PICS];
78
79extern struct irq_domain *cpu_domain;
80extern struct irq_domain *liointc_domain;
81extern struct irq_domain *pch_lpc_domain;
82extern struct irq_domain *pch_msi_domain[MAX_IO_PICS];
83extern struct irq_domain *pch_pic_domain[MAX_IO_PICS];
84
85extern irqreturn_t loongson3_ipi_interrupt(int irq, void *dev);
86
87#endif /* __ASM_MACH_LOONGSON64_IRQ_H_ */
88