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The irqroute.asl file is already common enough to all x86 platforms. Platform ASL files need only provide a irqroute.h to describe how internal PCI devices and PCIe downstream port devices' INTx pins are routed to which PIRQ pin. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
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* Copyright (C) 2013 Google Inc.
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* Copyright (C) 2014 Sage Electronics Engineering, LLC.
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* Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com>
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*
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* Modified from coreboot src/soc/intel/baytrail/include/soc/irq_helper.h
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* This file intentionally gets included multiple times, to set pic and apic
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* modes, so should not have guard statements added.
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*/
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/*
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* This file will use irqroute.asl and irqroute.h to generate the ACPI IRQ
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* routing for the platform being compiled.
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*
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* This method uses #defines in irqroute.h along with the macros contained
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* in this file to generate an IRQ routing for each PCI device in the system.
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*/
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#undef PCI_DEV_PIRQ_ROUTES
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#undef PCI_DEV_PIRQ_ROUTE
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#undef ACPI_DEV_IRQ
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#undef PCIE_BRIDGE_DEV
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#undef RP_IRQ_ROUTES
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#undef ROOTPORT_METHODS
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#undef ROOTPORT_IRQ_ROUTES
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#undef RP_METHOD
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#if defined(PIC_MODE)
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#define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \
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Package() { ## dev_ ## ffff, pin_, \_SB.PCI0.LPCB.LNK ## pin_name_, 0 }
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#define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \
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Name(prefix_ ## func_ ## P, Package() \
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{ \
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ACPI_DEV_IRQ(0x0000, 0, a_), \
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ACPI_DEV_IRQ(0x0000, 1, b_), \
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ACPI_DEV_IRQ(0x0000, 2, c_), \
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ACPI_DEV_IRQ(0x0000, 3, d_), \
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})
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/* define as blank so ROOTPORT_METHODS only gets inserted once */
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#define ROOTPORT_METHODS(prefix_, dev_)
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#else /* defined(PIC_MODE) */
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#define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \
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Package() { ## dev_ ## ffff, pin_, 0, PIRQ ## pin_name_ ## _APIC_IRQ }
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#define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \
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Name(prefix_ ## func_ ## A, Package() \
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{ \
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ACPI_DEV_IRQ(0x0000, 0, a_), \
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ACPI_DEV_IRQ(0x0000, 1, b_), \
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ACPI_DEV_IRQ(0x0000, 2, c_), \
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ACPI_DEV_IRQ(0x0000, 3, d_), \
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})
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#define ROOTPORT_METHODS(prefix_, dev_) \
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RP_METHOD(prefix_, dev_, 0) \
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RP_METHOD(prefix_, dev_, 1) \
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RP_METHOD(prefix_, dev_, 2) \
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RP_METHOD(prefix_, dev_, 3) \
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RP_METHOD(prefix_, dev_, 4) \
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RP_METHOD(prefix_, dev_, 5) \
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RP_METHOD(prefix_, dev_, 6) \
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RP_METHOD(prefix_, dev_, 7)
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#endif /* defined(PIC_MODE) */
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#define PCI_DEV_PIRQ_ROUTE(dev_, a_, b_, c_, d_) \
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ACPI_DEV_IRQ(dev_, 0, a_), \
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ACPI_DEV_IRQ(dev_, 1, b_), \
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ACPI_DEV_IRQ(dev_, 2, c_), \
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ACPI_DEV_IRQ(dev_, 3, d_)
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#define PCIE_BRIDGE_DEV(prefix_, dev_, a_, b_, c_, d_) \
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ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \
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ROOTPORT_METHODS(prefix_, dev_)
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#define ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \
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RP_IRQ_ROUTES(prefix_, 0, a_, b_, c_, d_) \
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RP_IRQ_ROUTES(prefix_, 1, b_, c_, d_, a_) \
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RP_IRQ_ROUTES(prefix_, 2, c_, d_, a_, b_) \
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RP_IRQ_ROUTES(prefix_, 3, d_, a_, b_, c_) \
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RP_IRQ_ROUTES(prefix_, 4, a_, b_, c_, d_) \
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RP_IRQ_ROUTES(prefix_, 5, b_, c_, d_, a_) \
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RP_IRQ_ROUTES(prefix_, 6, c_, d_, a_, b_) \
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RP_IRQ_ROUTES(prefix_, 7, d_, a_, b_, c_)
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#define RP_METHOD(prefix_, dev_, func_)\
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Device (prefix_ ## 0 ## func_) \
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{ \
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Name(_ADR, dev_ ## 000 ## func_) \
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Name(_PRW, Package() { 0, 0 }) \
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Method(_PRT) { \
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If (PICM) { \
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Return (prefix_ ## func_ ## A) \
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} Else { \
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Return (prefix_ ## func_ ## P) \
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} \
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} \
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}
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/* SoC specific PIRQ route configuration */
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#include <asm/arch/acpi/irqroute.h>
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