On 21 April 2015 at 19:56, Bin Meng bmeng.cn@gmail.com wrote:
On x86 boards, platform chipset receives up to four different interrupt signals from PCI devices (INTA/B/C/D), which in turn will be routed to chipset internal PIRQ lines then routed to 8259 PIC finally if configuring the whole system to work under the so-called PIC mode (in contrast to symmetric IO mode which uses IOAPIC).
We add two major APIs to aid this, one for routing PIRQ and the other one for generating a PIRQ routing table.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
arch/x86/Kconfig | 31 ++++++++ arch/x86/include/asm/pirq_routing.h | 139 ++++++++++++++++++++++++++++++++++++ arch/x86/lib/Makefile | 1 + arch/x86/lib/pirq_routing.c | 129 +++++++++++++++++++++++++++++++++ 4 files changed, 300 insertions(+) create mode 100644 arch/x86/include/asm/pirq_routing.h create mode 100644 arch/x86/lib/pirq_routing.c
Acked-by: Simon Glass sjg@chromium.org