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 38 extern int find_pch_pic(u32 gsi); 39 extern int eiointc_get_node(int id); 40 eiointc_enable(void)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 50 struct acpi_madt_lio_pic; 51 struct acpi_madt_eio_pic; 52 struct acpi_madt_ht_pic; 53 struct acpi_madt_bio_pic; 54 struct acpi_madt_msi_pic; 55 struct acpi_madt_lpc_pic; 56 57 struct irq_domain *liointc_acpi_init(struct irq_domain *parent, 58 struct acpi_madt_lio_pic *acpi_liointc); 59 struct irq_domain *eiointc_acpi_init(struct irq_domain *parent, 60 struct acpi_madt_eio_pic *acpi_eiointc); 61 62 struct irq_domain *htvec_acpi_init(struct irq_domain *parent, 63 struct acpi_madt_ht_pic *acpi_htvec); 64 struct irq_domain *pch_lpc_acpi_init(struct irq_domain *parent, 65 struct acpi_madt_lpc_pic *acpi_pchlpc); 66 struct irq_domain *pch_msi_acpi_init(struct irq_domain *parent, 67 struct acpi_madt_msi_pic *acpi_pchmsi); 68 struct irq_domain *pch_pic_acpi_init(struct irq_domain *parent, 69 struct acpi_madt_bio_pic *acpi_pchpic); 70 71 extern struct acpi_madt_lio_pic *acpi_liointc; 72 extern struct acpi_madt_eio_pic *acpi_eiointc[MAX_IO_PICS]; 73 74 extern struct acpi_madt_ht_pic *acpi_htintc; 75 extern struct acpi_madt_lpc_pic *acpi_pchlpc; 76 extern struct acpi_madt_msi_pic *acpi_pchmsi[MAX_IO_PICS]; 77 extern struct acpi_madt_bio_pic *acpi_pchpic[MAX_IO_PICS]; 78 79 extern struct irq_domain *cpu_domain; 80 extern struct irq_domain *liointc_domain; 81 extern struct irq_domain *pch_lpc_domain; 82 extern struct irq_domain *pch_msi_domain[MAX_IO_PICS]; 83 extern struct irq_domain *pch_pic_domain[MAX_IO_PICS]; 84 85 extern irqreturn_t loongson3_ipi_interrupt(int irq, void *dev); 86 87 #endif /* __ASM_MACH_LOONGSON64_IRQ_H_ */ 88