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Added patch by Dustin Howett: header with HPET definitions and (empty)

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file for hpet implementation. Not yet added to the build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25773 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini 2008-06-03 04:37:18 +00:00
parent 87905063c3
commit 54d9d37f9d
3 changed files with 53 additions and 0 deletions
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46
headers/private/kernel/arch/x86/arch_hpet.h Normal file
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@ -0,0 +1,46 @@
/*
* Copyright 2008, Dustin Howett, dustin.howett@gmail.com. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef _KERNEL_ARCH_x86_HPET_H
#define _KERNEL_ARCH_x86_HPET_H
/* All masks are 64 bits wide to represent bit locations;
the HPET registers are 64 bits wide. */
/* Global Capability Register Masks */
#define HPET_CAP_MASK_ID 0x00000000000000FF
#define HPET_CAP_MASK_NUMTIMERS 0x0000000000001F00
#define HPET_CAP_MASK_WIDTH 0x0000000000002000
#define HPET_CAP_MASK_LEGACY 0x0000000000008000
#define HPET_CAP_MASK_VENDOR_ID 0x00000000FFFF0000
#define HPET_CAP_MASK_PERIOD 0xFFFFFFFF00000000
/* Retrieve Global Capabilities */
#define HPET_GET_ID(regs) ((regs)->caps & HPET_CAP_MASK_ID)
#define HPET_GET_NUM_TIMERS(regs) (((regs)->caps & HPET_CAP_MASK_NUMTIMERS) >> 8)
#define HPET_IS_64BIT_CAPABLE(regs) (((regs)->caps & HPET_CAP_MASK_WIDTH) >> 13)
#define HPET_IS_LEGACY_CAPABLE(regs) (((regs)->caps & HPET_CAP_MASK_LEGACY) >> 15)
#define HPET_GET_VENDOR_ID(regs) (((regs)->caps & HPET_CAP_MASK_VENDOR_ID) >> 16)
#define HPET_GET_PERIOD(regs) (((regs)->caps & HPET_CAP_MASK_PERIOD) >> 32)
struct hpet_timer {
uint64 config, /* Timer configuration and capabilities */
uint64 comparator, /* Comparator value */
uint64 introute, /* FSB Interrupt Routing */
uint64 reserved
};
struct hpet_regs {
uint64 caps, /* HPET Capabilities and ID */
uint64 reserved1,
uint64 config, /* General Configuration */
uint64 reserved2,
uint64 intstatus, /* General Interrupt Status */
uint8 reserved3[200],
uint64 mainvalue, /* Main Counter Value */
uint64 reserved3,
struct hpet_timer timers[1] /* Timers */
};
#endif

1
src/system/kernel/arch/x86/Jamfile
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@ -15,6 +15,7 @@ KernelMergeObject kernel_arch_x86.o :
arch_debug.cpp
arch_debug_console.c
arch_elf.c
# arch_hpet.c
arch_int.c
arch_platform.c
# arch_selector.c

6
src/system/kernel/arch/x86/arch_hpet.c Normal file
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@ -0,0 +1,6 @@
/*
* Copyright 2008, Dustin Howett, dustin.howett@gmail.com. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#include <arch/x86/arch_hpet.h>