1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2013 Google Inc. 4 * Copyright (C) 2014 Sage Electronics Engineering, LLC. 5 * Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com> 6 * 7 * Modified from coreboot src/soc/intel/baytrail/include/soc/irq_helper.h 8 */ 9 10 /* 11 * This file intentionally gets included multiple times, to set pic and apic 12 * modes, so should not have guard statements added. 13 */ 14 15 /* 16 * This file will use irqroute.asl and irqroute.h to generate the ACPI IRQ 17 * routing for the platform being compiled. 18 * 19 * This method uses #defines in irqroute.h along with the macros contained 20 * in this file to generate an IRQ routing for each PCI device in the system. 21 */ 22 23 #undef PCI_DEV_PIRQ_ROUTES 24 #undef PCI_DEV_PIRQ_ROUTE 25 #undef ACPI_DEV_IRQ 26 #undef PCIE_BRIDGE_DEV 27 #undef RP_IRQ_ROUTES 28 #undef ROOTPORT_METHODS 29 #undef ROOTPORT_IRQ_ROUTES 30 #undef RP_METHOD 31 32 #if defined(PIC_MODE) 33 34 #define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \ 35 Package() { ## dev_ ## ffff, pin_, \_SB.PCI0.LPCB.LNK ## pin_name_, 0 } 36 37 #define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \ 38 Name(prefix_ ## func_ ## P, Package() \ 39 { \ 40 ACPI_DEV_IRQ(0x0000, 0, a_), \ 41 ACPI_DEV_IRQ(0x0000, 1, b_), \ 42 ACPI_DEV_IRQ(0x0000, 2, c_), \ 43 ACPI_DEV_IRQ(0x0000, 3, d_), \ 44 }) 45 46 /* define as blank so ROOTPORT_METHODS only gets inserted once */ 47 #define ROOTPORT_METHODS(prefix_, dev_) 48 49 #else /* defined(PIC_MODE) */ 50 51 #define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \ 52 Package() { ## dev_ ## ffff, pin_, 0, PIRQ ## pin_name_ ## _APIC_IRQ } 53 54 #define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \ 55 Name(prefix_ ## func_ ## A, Package() \ 56 { \ 57 ACPI_DEV_IRQ(0x0000, 0, a_), \ 58 ACPI_DEV_IRQ(0x0000, 1, b_), \ 59 ACPI_DEV_IRQ(0x0000, 2, c_), \ 60 ACPI_DEV_IRQ(0x0000, 3, d_), \ 61 }) 62 63 #define ROOTPORT_METHODS(prefix_, dev_) \ 64 RP_METHOD(prefix_, dev_, 0) \ 65 RP_METHOD(prefix_, dev_, 1) \ 66 RP_METHOD(prefix_, dev_, 2) \ 67 RP_METHOD(prefix_, dev_, 3) \ 68 RP_METHOD(prefix_, dev_, 4) \ 69 RP_METHOD(prefix_, dev_, 5) \ 70 RP_METHOD(prefix_, dev_, 6) \ 71 RP_METHOD(prefix_, dev_, 7) 72 73 #endif /* defined(PIC_MODE) */ 74 75 #define PCI_DEV_PIRQ_ROUTE(dev_, a_, b_, c_, d_) \ 76 ACPI_DEV_IRQ(dev_, 0, a_), \ 77 ACPI_DEV_IRQ(dev_, 1, b_), \ 78 ACPI_DEV_IRQ(dev_, 2, c_), \ 79 ACPI_DEV_IRQ(dev_, 3, d_) 80 81 #define PCIE_BRIDGE_DEV(prefix_, dev_, a_, b_, c_, d_) \ 82 ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \ 83 ROOTPORT_METHODS(prefix_, dev_) 84 85 #define ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \ 86 RP_IRQ_ROUTES(prefix_, 0, a_, b_, c_, d_) \ 87 RP_IRQ_ROUTES(prefix_, 1, b_, c_, d_, a_) \ 88 RP_IRQ_ROUTES(prefix_, 2, c_, d_, a_, b_) \ 89 RP_IRQ_ROUTES(prefix_, 3, d_, a_, b_, c_) \ 90 RP_IRQ_ROUTES(prefix_, 4, a_, b_, c_, d_) \ 91 RP_IRQ_ROUTES(prefix_, 5, b_, c_, d_, a_) \ 92 RP_IRQ_ROUTES(prefix_, 6, c_, d_, a_, b_) \ 93 RP_IRQ_ROUTES(prefix_, 7, d_, a_, b_, c_) 94 95 #define RP_METHOD(prefix_, dev_, func_)\ 96 Device (prefix_ ## 0 ## func_) \ 97 { \ 98 Name(_ADR, dev_ ## 000 ## func_) \ 99 Name(_PRW, Package() { 0, 0 }) \ 100 Method(_PRT) { \ 101 If (PICM) { \ 102 Return (prefix_ ## func_ ## A) \ 103 } Else { \ 104 Return (prefix_ ## func_ ## P) \ 105 } \ 106 } \ 107 } 108 109 /* SoC specific PIRQ route configuration */ 110 #include <asm/arch/acpi/irqroute.h> 111