167 lines
5.5 KiB
C
167 lines
5.5 KiB
C
/*
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*
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* Copyright (c) 2009, Microsoft Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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* Authors:
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* Haiyang Zhang <haiyangz@microsoft.com>
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* Hank Janssen <hjanssen@microsoft.com>
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*
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*/
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#ifndef _OSD_H_
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#define _OSD_H_
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/* Defines */
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#define ALIGN_UP(value, align) ( ((value) & (align-1))? ( ((value) + (align-1)) & ~(align-1) ): (value) )
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#define ALIGN_DOWN(value, align) ( (value) & ~(align-1) )
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#define NUM_PAGES_SPANNED(addr, len) ( (ALIGN_UP(addr+len, PAGE_SIZE) - ALIGN_DOWN(addr, PAGE_SIZE)) >> PAGE_SHIFT )
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#define LOWORD(dw) ((unsigned short) (dw))
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#define HIWORD(dw) ((unsigned short) (((unsigned int) (dw) >> 16) & 0xFFFF))
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typedef struct _DLIST_ENTRY {
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struct _DLIST_ENTRY *Flink;
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struct _DLIST_ENTRY *Blink;
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} DLIST_ENTRY;
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/* Other types */
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/* typedef unsigned char GUID[16]; */
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typedef void (*PFN_WORKITEM_CALLBACK)(void* context);
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typedef void (*PFN_TIMER_CALLBACK)(void* context);
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typedef struct {
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unsigned char Data[16];
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} GUID;
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struct osd_waitevent {
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int condition;
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wait_queue_head_t event;
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};
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struct osd_timer {
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struct timer_list timer;
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PFN_TIMER_CALLBACK callback;
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void* context;
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};
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#ifdef __x86_64__
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#define RDMSR(reg, v) { \
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u32 h, l; \
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__asm__ __volatile__("rdmsr" \
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: "=a" (l), "=d" (h) \
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: "c" (reg)); \
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v = (((u64)h) << 32) | l; \
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}
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#define WRMSR(reg, v) { \
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u32 h, l; \
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l = (u32)(((u64)(v)) & 0xFFFFFFFF); \
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h = (u32)((((u64)(v)) >> 32) & 0xFFFFFFFF); \
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__asm__ __volatile__("wrmsr" \
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: /* no outputs */ \
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: "c" (reg), "a" (l), "d" (h)); \
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}
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#else
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#define RDMSR(reg, v) \
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__asm__ __volatile__("rdmsr" \
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: "=A" (v) \
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: "c" (reg))
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#define WRMSR(reg, v) \
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__asm__ __volatile__("wrmsr" \
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: /* no outputs */ \
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: "c" (reg), "A" ((u64)v))
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#endif
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static inline void do_cpuid(unsigned int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx)
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{
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__asm__ __volatile__("cpuid" : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx) : "0" (op), "c" (ecx));
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}
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/* Osd routines */
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extern void BitSet(unsigned int* addr, int value);
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extern void BitClear(unsigned int* addr, int value);
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extern int BitTest(unsigned int* addr, int value);
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extern int BitTestAndClear(unsigned int* addr, int value);
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extern int BitTestAndSet(unsigned int* addr, int value);
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extern int InterlockedIncrement(int *val);
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extern int InterlockedDecrement(int *val);
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extern int InterlockedCompareExchange(int *val, int new, int curr);
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extern void* VirtualAllocExec(unsigned int size);
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extern void VirtualFree(void* VirtAddr);
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extern void* PageAlloc(unsigned int count);
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extern void PageFree(void* page, unsigned int count);
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extern void* MemMapIO(unsigned long phys, unsigned long size);
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extern void MemUnmapIO(void* virt);
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extern struct osd_timer *TimerCreate(PFN_TIMER_CALLBACK pfnTimerCB, void* context);
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extern void TimerClose(struct osd_timer *t);
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extern int TimerStop(struct osd_timer *t);
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extern void TimerStart(struct osd_timer *t, u32 expirationInUs);
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extern struct osd_waitevent *WaitEventCreate(void);
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extern void WaitEventClose(struct osd_waitevent *waitEvent);
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extern void WaitEventSet(struct osd_waitevent *waitEvent);
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extern int WaitEventWait(struct osd_waitevent *waitEvent);
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/* If >0, waitEvent got signaled. If ==0, timeout. If < 0, error */
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extern int WaitEventWaitEx(struct osd_waitevent *waitEvent, u32 TimeoutInMs);
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#define GetVirtualAddress Physical2LogicalAddr
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void* Physical2LogicalAddr(unsigned long PhysAddr);
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#define GetPhysicalAddress Logical2PhysicalAddr
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unsigned long Logical2PhysicalAddr(void * LogicalAddr);
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unsigned long Virtual2Physical(void * VirtAddr);
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void* PageMapVirtualAddress(unsigned long Pfn);
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void PageUnmapVirtualAddress(void* VirtAddr);
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extern struct workqueue_struct *WorkQueueCreate(char* name);
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extern void WorkQueueClose(struct workqueue_struct *hWorkQueue);
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extern int WorkQueueQueueWorkItem(struct workqueue_struct *hWorkQueue,
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PFN_WORKITEM_CALLBACK workItem,
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void *context);
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extern void QueueWorkItem(PFN_WORKITEM_CALLBACK workItem, void* context);
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#endif /* _OSD_H_ */
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