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;
71 extern void *osd_VirtualAllocExec(unsigned int size);
73 extern void *osd_PageAlloc(unsigned int count);
74 extern void osd_PageFree(void* page, unsigned int count);
76 extern struct osd_timer *osd_TimerCreate(PFN_TIMER_CALLBACK pfnTimerCB, void* context);
77 extern void osd_TimerClose(struct osd_timer *t);
78 extern int osd_TimerStop(struct osd_timer *t);
79 extern void osd_TimerStart(struct osd_timer *t, u32 expirationInUs);
81 extern struct osd_waitevent *osd_WaitEventCreate(void);
82 extern void osd_WaitEventSet(struct osd_waitevent *waitEvent);
83 extern int osd_WaitEventWait(struct osd_waitevent *waitEvent);
85 /* If >0, waitEvent got signaled. If ==0, timeout. If < 0, error */
86 extern int osd_WaitEventWaitEx(struct osd_waitevent *waitEvent, u32 TimeoutInMs);
89 int osd_schedule_callback(struct workqueue_struct *wq,