3 * Copyright (c) 2009, Microsoft Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16 * Place - Suite 330, Boston, MA 02111-1307 USA.
19 * Haiyang Zhang <haiyangz@microsoft.com>
20 * Hank Janssen <hjanssen@microsoft.com>
33 #define ALIGN_UP(value, align) ( ((value) & (align-1))? ( ((value) + (align-1)) & ~(align-1) ): (value) )
34 #define ALIGN_DOWN(value, align) ( (value) & ~(align-1) )
35 #define NUM_PAGES_SPANNED(addr, len) ( (ALIGN_UP(addr+len, PAGE_SIZE) - ALIGN_DOWN(addr, PAGE_SIZE)) >> PAGE_SHIFT )
37 #define LOWORD(dw) ((unsigned short) (dw))
38 #define HIWORD(dw) ((unsigned short) (((unsigned int) (dw) >> 16) & 0xFFFF))
40 typedef struct _DLIST_ENTRY
{
41 struct _DLIST_ENTRY
*Flink
;
42 struct _DLIST_ENTRY
*Blink
;
48 /* typedef unsigned char GUID[16]; */
50 typedef void (*PFN_TIMER_CALLBACK
)(void* context
);
54 unsigned char Data
[16];
57 struct osd_waitevent
{
59 wait_queue_head_t event
;
63 struct timer_list timer
;
64 PFN_TIMER_CALLBACK callback
;
72 #define RDMSR(reg, v) { \
74 __asm__ __volatile__("rdmsr" \
75 : "=a" (l), "=d" (h) \
77 v = (((u64)h) << 32) | l; \
80 #define WRMSR(reg, v) { \
82 l = (u32)(((u64)(v)) & 0xFFFFFFFF); \
83 h = (u32)((((u64)(v)) >> 32) & 0xFFFFFFFF); \
84 __asm__ __volatile__("wrmsr" \
86 : "c" (reg), "a" (l), "d" (h)); \
91 #define RDMSR(reg, v) \
92 __asm__ __volatile__("rdmsr" \
96 #define WRMSR(reg, v) \
97 __asm__ __volatile__("wrmsr" \
99 : "c" (reg), "A" ((u64)v))
104 static inline void do_cpuid(unsigned int op
, unsigned int *eax
, unsigned int *ebx
, unsigned int *ecx
, unsigned int *edx
)
106 __asm__
__volatile__("cpuid" : "=a" (*eax
), "=b" (*ebx
), "=c" (*ecx
), "=d" (*edx
) : "0" (op
), "c" (ecx
));
112 extern int InterlockedIncrement(int *val
);
113 extern int InterlockedDecrement(int *val
);
114 extern int InterlockedCompareExchange(int *val
, int new, int curr
);
116 extern void* VirtualAllocExec(unsigned int size
);
117 extern void VirtualFree(void* VirtAddr
);
119 extern void* PageAlloc(unsigned int count
);
120 extern void PageFree(void* page
, unsigned int count
);
122 extern void* MemMapIO(unsigned long phys
, unsigned long size
);
123 extern void MemUnmapIO(void* virt
);
125 extern struct osd_timer
*TimerCreate(PFN_TIMER_CALLBACK pfnTimerCB
, void* context
);
126 extern void TimerClose(struct osd_timer
*t
);
127 extern int TimerStop(struct osd_timer
*t
);
128 extern void TimerStart(struct osd_timer
*t
, u32 expirationInUs
);
130 extern struct osd_waitevent
*WaitEventCreate(void);
131 extern void WaitEventSet(struct osd_waitevent
*waitEvent
);
132 extern int WaitEventWait(struct osd_waitevent
*waitEvent
);
134 /* If >0, waitEvent got signaled. If ==0, timeout. If < 0, error */
135 extern int WaitEventWaitEx(struct osd_waitevent
*waitEvent
, u32 TimeoutInMs
);
138 #define GetVirtualAddress Physical2LogicalAddr
139 void* Physical2LogicalAddr(unsigned long PhysAddr
);
141 #define GetPhysicalAddress Logical2PhysicalAddr
142 unsigned long Logical2PhysicalAddr(void * LogicalAddr
);
144 unsigned long Virtual2Physical(void * VirtAddr
);
146 void* PageMapVirtualAddress(unsigned long Pfn
);
147 void PageUnmapVirtualAddress(void* VirtAddr
);
150 int osd_schedule_callback(struct workqueue_struct
*wq
,
151 void (*func
)(void *),