Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * License.  See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (C) 1992 Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright (C) 1994 - 2000 Ralf Baechle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * Copyright (C) 2006 Thomas Bogendoerfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/i8259.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/sni.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/irq_cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) void (*sni_hwint)(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) asmlinkage void plat_irq_dispatch(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	sni_hwint();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* ISA irq handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) irqreturn_t sni_isa_irq_handler(int dummy, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	irq = i8259_irq();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	if (unlikely(irq < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		return IRQ_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	generic_handle_irq(irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }
^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)  * On systems with i8259-style interrupt controllers we assume for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)  * driver compatibility reasons interrupts 0 - 15 to be the i8295
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)  * interrupts even if the hardware uses a different interrupt numbering.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) void __init arch_init_irq(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	init_i8259_irqs();			/* Integrated i8259  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	switch (sni_brd_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	case SNI_BRD_10:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	case SNI_BRD_10NEW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	case SNI_BRD_TOWER_OASIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	case SNI_BRD_MINITOWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 		sni_a20r_irq_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	case SNI_BRD_PCI_TOWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 		sni_pcit_irq_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	case SNI_BRD_PCI_TOWER_CPLUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		sni_pcit_cplus_irq_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	case SNI_BRD_RM200:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 		sni_rm200_irq_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	case SNI_BRD_PCI_MTOWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	case SNI_BRD_PCI_DESKTOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	case SNI_BRD_PCI_MTOWER_CPLUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 		sni_pcimt_irq_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }