diff options
author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/seabios/src/hw/pic.h | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/seabios/src/hw/pic.h')
-rw-r--r-- | qemu/roms/seabios/src/hw/pic.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/qemu/roms/seabios/src/hw/pic.h b/qemu/roms/seabios/src/hw/pic.h new file mode 100644 index 000000000..6947b6e81 --- /dev/null +++ b/qemu/roms/seabios/src/hw/pic.h @@ -0,0 +1,56 @@ +// Helpers for working with i8259 interrupt controller. +// +// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> +// Copyright (C) 2002 MandrakeSoft S.A. +// +// This file may be distributed under the terms of the GNU LGPLv3 license. +#ifndef __PIC_H +#define __PIC_H + +#include "x86.h" // outb + +#define PORT_PIC1_CMD 0x0020 +#define PORT_PIC1_DATA 0x0021 +#define PORT_PIC2_CMD 0x00a0 +#define PORT_PIC2_DATA 0x00a1 + +// PORT_PIC1 bitdefs +#define PIC1_IRQ0 (1<<0) +#define PIC1_IRQ1 (1<<1) +#define PIC1_IRQ2 (1<<2) +#define PIC1_IRQ5 (1<<5) +#define PIC1_IRQ6 (1<<6) +// PORT_PIC2 bitdefs +#define PIC2_IRQ8 (1<<8) +#define PIC2_IRQ12 (1<<12) +#define PIC2_IRQ13 (1<<13) +#define PIC2_IRQ14 (1<<14) + +#define PIC_IRQMASK_DEFAULT ((u16)~PIC1_IRQ2) + +#define BIOS_HWIRQ0_VECTOR 0x08 +#define BIOS_HWIRQ8_VECTOR 0x70 + +static inline void +pic_eoi1(void) +{ + // Send eoi (select OCW2 + eoi) + outb(0x20, PORT_PIC1_CMD); +} + +static inline void +pic_eoi2(void) +{ + // Send eoi (select OCW2 + eoi) + outb(0x20, PORT_PIC2_CMD); + pic_eoi1(); +} + +u16 pic_irqmask_read(void); +void pic_irqmask_write(u16 mask); +void pic_irqmask_mask(u16 off, u16 on); +void pic_reset(u8 irq0, u8 irq8); +void pic_setup(void); +void enable_hwirq(int hwirq, struct segoff_s func); + +#endif // pic.h |