diff options
Diffstat (limited to 'arch/x86/include/asm/acpi/irq_helper.h')
| -rw-r--r-- | arch/x86/include/asm/acpi/irq_helper.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpi/irq_helper.h b/arch/x86/include/asm/acpi/irq_helper.h new file mode 100644 index 0000000000..f0b3a6bc0a --- /dev/null +++ b/arch/x86/include/asm/acpi/irq_helper.h @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2013 Google Inc. + * Copyright (C) 2014 Sage Electronics Engineering, LLC. + * Copyright (C) 2016 Bin Meng <bmeng.cn@gmail.com> + * + * Modified from coreboot src/soc/intel/baytrail/include/soc/irq_helper.h + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * This file intentionally gets included multiple times, to set pic and apic + * modes, so should not have guard statements added. + */ + +/* + * This file will use irqroute.asl and irqroute.h to generate the ACPI IRQ + * routing for the platform being compiled. + * + * This method uses #defines in irqroute.h along with the macros contained + * in this file to generate an IRQ routing for each PCI device in the system. + */ + +#undef PCI_DEV_PIRQ_ROUTES +#undef PCI_DEV_PIRQ_ROUTE +#undef ACPI_DEV_IRQ +#undef PCIE_BRIDGE_DEV +#undef RP_IRQ_ROUTES +#undef ROOTPORT_METHODS +#undef ROOTPORT_IRQ_ROUTES +#undef RP_METHOD + +#if defined(PIC_MODE) + +#define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \ + Package() { ## dev_ ## ffff, pin_, \_SB.PCI0.LPCB.LNK ## pin_name_, 0 } + +#define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \ +Name(prefix_ ## func_ ## P, Package() \ +{ \ + ACPI_DEV_IRQ(0x0000, 0, a_), \ + ACPI_DEV_IRQ(0x0000, 1, b_), \ + ACPI_DEV_IRQ(0x0000, 2, c_), \ + ACPI_DEV_IRQ(0x0000, 3, d_), \ +}) + +/* define as blank so ROOTPORT_METHODS only gets inserted once */ +#define ROOTPORT_METHODS(prefix_, dev_) + +#else /* defined(PIC_MODE) */ + +#define ACPI_DEV_IRQ(dev_, pin_, pin_name_) \ + Package() { ## dev_ ## ffff, pin_, 0, PIRQ ## pin_name_ ## _APIC_IRQ } + +#define RP_IRQ_ROUTES(prefix_, func_, a_, b_, c_, d_) \ +Name(prefix_ ## func_ ## A, Package() \ +{ \ + ACPI_DEV_IRQ(0x0000, 0, a_), \ + ACPI_DEV_IRQ(0x0000, 1, b_), \ + ACPI_DEV_IRQ(0x0000, 2, c_), \ + ACPI_DEV_IRQ(0x0000, 3, d_), \ +}) + +#define ROOTPORT_METHODS(prefix_, dev_) \ + RP_METHOD(prefix_, dev_, 0) \ + RP_METHOD(prefix_, dev_, 1) \ + RP_METHOD(prefix_, dev_, 2) \ + RP_METHOD(prefix_, dev_, 3) \ + RP_METHOD(prefix_, dev_, 4) \ + RP_METHOD(prefix_, dev_, 5) \ + RP_METHOD(prefix_, dev_, 6) \ + RP_METHOD(prefix_, dev_, 7) + +#endif /* defined(PIC_MODE) */ + +#define PCI_DEV_PIRQ_ROUTE(dev_, a_, b_, c_, d_) \ + ACPI_DEV_IRQ(dev_, 0, a_), \ + ACPI_DEV_IRQ(dev_, 1, b_), \ + ACPI_DEV_IRQ(dev_, 2, c_), \ + ACPI_DEV_IRQ(dev_, 3, d_) + +#define PCIE_BRIDGE_DEV(prefix_, dev_, a_, b_, c_, d_) \ + ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \ + ROOTPORT_METHODS(prefix_, dev_) + +#define ROOTPORT_IRQ_ROUTES(prefix_, a_, b_, c_, d_) \ + RP_IRQ_ROUTES(prefix_, 0, a_, b_, c_, d_) \ + RP_IRQ_ROUTES(prefix_, 1, b_, c_, d_, a_) \ + RP_IRQ_ROUTES(prefix_, 2, c_, d_, a_, b_) \ + RP_IRQ_ROUTES(prefix_, 3, d_, a_, b_, c_) \ + RP_IRQ_ROUTES(prefix_, 4, a_, b_, c_, d_) \ + RP_IRQ_ROUTES(prefix_, 5, b_, c_, d_, a_) \ + RP_IRQ_ROUTES(prefix_, 6, c_, d_, a_, b_) \ + RP_IRQ_ROUTES(prefix_, 7, d_, a_, b_, c_) + +#define RP_METHOD(prefix_, dev_, func_)\ +Device (prefix_ ## 0 ## func_) \ +{ \ + Name(_ADR, dev_ ## 000 ## func_) \ + Name(_PRW, Package() { 0, 0 }) \ + Method(_PRT) { \ + If (PICM) { \ + Return (prefix_ ## func_ ## A) \ + } Else { \ + Return (prefix_ ## func_ ## P) \ + } \ + } \ +} + +/* SoC specific PIRQ route configuration */ +#include <asm/arch/acpi/irqroute.h> |