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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