1 /* 2 * Copyright (C) 2013 Google Inc. 3 * Copyright (C) 2014 Sage Electronics Engineering, LLC. 4 * Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com> 5 * 6 * Modified from coreboot src/soc/intel/baytrail/include/soc/irq_helper.h 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 /* 12 * This file intentionally gets included multiple times, to set pic and apic 13 * modes, so should not have guard statements added. 14 */ 15 16 /* 17 * This file will use irqroute.asl and irqroute.h to generate the ACPI IRQ 18 * routing for the platform being compiled. 19 * 20 * This method uses #defines in irqroute.h along with the macros contained 21 * in this file to generate an IRQ routing for each PCI device in the system. 22 */ 23 24 #undef PCI_DEV_PIRQ_ROUTES 25 #undef PCI_DEV_PIRQ_ROUTE 26 #undef ACPI_DEV_IRQ 27 #undef PCIE_BRIDGE_DEV 28 #undef RP_IRQ_ROUTES 29 #undef ROOTPORT_METHODS 30 #undef ROOTPORT_IRQ_ROUTES 31 #undef RP_METHOD 32 33 #if defined(PIC_MODE) 34 35 #define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \ 36 Package() { ## dev_ ## ffff, pin_, \_SB.PCI0.LPCB.LNK ## pin_name_, 0 } 37 38 #define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \ 39 Name(prefix_ ## func_ ## P, Package() \ 40 { \ 41 ACPI_DEV_IRQ(0x0000, 0, a_), \ 42 ACPI_DEV_IRQ(0x0000, 1, b_), \ 43 ACPI_DEV_IRQ(0x0000, 2, c_), \ 44 ACPI_DEV_IRQ(0x0000, 3, d_), \ 45 }) 46 47 /* define as blank so ROOTPORT_METHODS only gets inserted once */ 48 #define ROOTPORT_METHODS(prefix_, dev_) 49 50 #else /* defined(PIC_MODE) */ 51 52 #define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \ 53 Package() { ## dev_ ## ffff, pin_, 0, PIRQ ## pin_name_ ## _APIC_IRQ } 54 55 #define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \ 56 Name(prefix_ ## func_ ## A, Package() \ 57 { \ 58 ACPI_DEV_IRQ(0x0000, 0, a_), \ 59 ACPI_DEV_IRQ(0x0000, 1, b_), \ 60 ACPI_DEV_IRQ(0x0000, 2, c_), \ 61 ACPI_DEV_IRQ(0x0000, 3, d_), \ 62 }) 63 64 #define ROOTPORT_METHODS(prefix_, dev_) \ 65 RP_METHOD(prefix_, dev_, 0) \ 66 RP_METHOD(prefix_, dev_, 1) \ 67 RP_METHOD(prefix_, dev_, 2) \ 68 RP_METHOD(prefix_, dev_, 3) \ 69 RP_METHOD(prefix_, dev_, 4) \ 70 RP_METHOD(prefix_, dev_, 5) \ 71 RP_METHOD(prefix_, dev_, 6) \ 72 RP_METHOD(prefix_, dev_, 7) 73 74 #endif /* defined(PIC_MODE) */ 75 76 #define PCI_DEV_PIRQ_ROUTE(dev_, a_, b_, c_, d_) \ 77 ACPI_DEV_IRQ(dev_, 0, a_), \ 78 ACPI_DEV_IRQ(dev_, 1, b_), \ 79 ACPI_DEV_IRQ(dev_, 2, c_), \ 80 ACPI_DEV_IRQ(dev_, 3, d_) 81 82 #define PCIE_BRIDGE_DEV(prefix_, dev_, a_, b_, c_, d_) \ 83 ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \ 84 ROOTPORT_METHODS(prefix_, dev_) 85 86 #define ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \ 87 RP_IRQ_ROUTES(prefix_, 0, a_, b_, c_, d_) \ 88 RP_IRQ_ROUTES(prefix_, 1, b_, c_, d_, a_) \ 89 RP_IRQ_ROUTES(prefix_, 2, c_, d_, a_, b_) \ 90 RP_IRQ_ROUTES(prefix_, 3, d_, a_, b_, c_) \ 91 RP_IRQ_ROUTES(prefix_, 4, a_, b_, c_, d_) \ 92 RP_IRQ_ROUTES(prefix_, 5, b_, c_, d_, a_) \ 93 RP_IRQ_ROUTES(prefix_, 6, c_, d_, a_, b_) \ 94 RP_IRQ_ROUTES(prefix_, 7, d_, a_, b_, c_) 95 96 #define RP_METHOD(prefix_, dev_, func_)\ 97 Device (prefix_ ## 0 ## func_) \ 98 { \ 99 Name(_ADR, dev_ ## 000 ## func_) \ 100 Name(_PRW, Package() { 0, 0 }) \ 101 Method(_PRT) { \ 102 If (PICM) { \ 103 Return (prefix_ ## func_ ## A) \ 104 } Else { \ 105 Return (prefix_ ## func_ ## P) \ 106 } \ 107 } \ 108 } 109 110 /* SoC specific PIRQ route configuration */ 111 #include <asm/arch/acpi/irqroute.h> 112