1 /****************************************************************************
3 * Copyright (C) 2005 - 2013 by Vivante Corp.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the license, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *****************************************************************************/
22 #include "gc_hal_kernel_linux.h"
24 #include <linux/pagemap.h>
25 #include <linux/seq_file.h>
27 #include <linux/mman.h>
28 #include <linux/sched.h>
29 #include <asm/atomic.h>
30 #include <linux/dma-mapping.h>
31 #include <linux/slab.h>
32 #include <linux/idr.h>
33 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,10,0)
34 #include <mach/hardware.h>
36 #include <linux/workqueue.h>
37 #include <linux/idr.h>
38 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,23)
39 #include <linux/math64.h>
41 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
42 #include <linux/reset.h>
43 static inline void imx_gpc_power_up_pu(bool flag) {}
44 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0)
45 #include <mach/common.h>
47 #include <linux/delay.h>
48 #include <linux/pm_runtime.h>
51 #if gcdANDROID_NATIVE_FENCE_SYNC
52 #include <linux/file.h>
53 #include "gc_hal_kernel_sync.h"
57 #define _GC_OBJ_ZONE gcvZONE_OS
59 /*******************************************************************************
60 ***** Version Signature *******************************************************/
63 const char * _PLATFORM = "\n\0$PLATFORM$Android$\n";
65 const char * _PLATFORM = "\n\0$PLATFORM$Linux$\n";
68 #define USER_SIGNAL_TABLE_LEN_INIT 64
69 #define gcdSUPPRESS_OOM_MESSAGE 1
71 #define MEMORY_LOCK(os) \
72 gcmkVERIFY_OK(gckOS_AcquireMutex( \
77 #define MEMORY_UNLOCK(os) \
78 gcmkVERIFY_OK(gckOS_ReleaseMutex((os), (os)->memoryLock))
80 #define MEMORY_MAP_LOCK(os) \
81 gcmkVERIFY_OK(gckOS_AcquireMutex( \
83 (os)->memoryMapLock, \
86 #define MEMORY_MAP_UNLOCK(os) \
87 gcmkVERIFY_OK(gckOS_ReleaseMutex((os), (os)->memoryMapLock))
89 /* Protection bit when mapping memroy to user sapce */
90 #define gcmkPAGED_MEMROY_PROT(x) pgprot_writecombine(x)
92 #if gcdNONPAGED_MEMORY_BUFFERABLE
93 #define gcmkIOREMAP ioremap_wc
94 #define gcmkNONPAGED_MEMROY_PROT(x) pgprot_writecombine(x)
95 #elif !gcdNONPAGED_MEMORY_CACHEABLE
96 #define gcmkIOREMAP ioremap_nocache
97 #define gcmkNONPAGED_MEMROY_PROT(x) pgprot_noncached(x)
100 #if gcdSUPPRESS_OOM_MESSAGE
101 #define gcdNOWARN __GFP_NOWARN
106 #define gcdINFINITE_TIMEOUT (60 * 1000)
107 #define gcdDETECT_TIMEOUT 0
108 #define gcdDETECT_DMA_ADDRESS 1
109 #define gcdDETECT_DMA_STATE 1
111 #define gcdUSE_NON_PAGED_MEMORY_CACHE 10
113 /******************************************************************************\
114 ********************************** Structures **********************************
115 \******************************************************************************/
116 #if gcdUSE_NON_PAGED_MEMORY_CACHE
117 typedef struct _gcsNonPagedMemoryCache
119 #ifndef NO_DMA_COHERENT
122 dma_addr_t dmaHandle;
128 struct _gcsNonPagedMemoryCache * prev;
129 struct _gcsNonPagedMemoryCache * next;
131 gcsNonPagedMemoryCache;
132 #endif /* gcdUSE_NON_PAGED_MEMORY_CACHE */
134 typedef struct _gcsUSER_MAPPING * gcsUSER_MAPPING_PTR;
135 typedef struct _gcsUSER_MAPPING
137 /* Pointer to next mapping structure. */
138 gcsUSER_MAPPING_PTR next;
140 /* Physical address of this mapping. */
143 /* Logical address of this mapping. */
146 /* Number of bytes of this mapping. */
149 /* Starting address of this mapping. */
152 /* Ending address of this mapping. */
157 typedef struct _gcsINTEGER_DB * gcsINTEGER_DB_PTR;
158 typedef struct _gcsINTEGER_DB
174 /* Pointer to device */
177 /* Memory management */
178 gctPOINTER memoryLock;
179 gctPOINTER memoryMapLock;
181 struct _LINUX_MDL *mdlHead;
182 struct _LINUX_MDL *mdlTail;
184 /* Kernel process ID. */
185 gctUINT32 kernelProcessID;
187 /* Signal management. */
190 gctPOINTER signalMutex;
192 /* signal id database. */
193 gcsINTEGER_DB signalDB;
195 #if gcdANDROID_NATIVE_FENCE_SYNC
197 gctPOINTER syncPointMutex;
199 /* sync point id database. */
200 gcsINTEGER_DB syncPointDB;
203 gcsUSER_MAPPING_PTR userMap;
204 gctPOINTER debugLock;
206 #if gcdUSE_NON_PAGED_MEMORY_CACHE
208 gcsNonPagedMemoryCache * cacheHead;
209 gcsNonPagedMemoryCache * cacheTail;
212 /* workqueue for os timer. */
213 struct workqueue_struct * workqueue;
216 typedef struct _gcsSIGNAL * gcsSIGNAL_PTR;
217 typedef struct _gcsSIGNAL
219 /* Kernel sync primitive. */
220 struct completion obj;
222 /* Manual reset flag. */
225 /* The reference counter. */
228 /* The owner of the signal. */
231 gckHARDWARE hardware;
238 #if gcdANDROID_NATIVE_FENCE_SYNC
239 typedef struct _gcsSYNC_POINT * gcsSYNC_POINT_PTR;
240 typedef struct _gcsSYNC_POINT
242 /* The reference counter. */
249 struct sync_timeline * timeline;
257 typedef struct _gcsPageInfo * gcsPageInfo_PTR;
258 typedef struct _gcsPageInfo
261 gctUINT32_PTR pageTable;
265 typedef struct _gcsOSTIMER * gcsOSTIMER_PTR;
266 typedef struct _gcsOSTIMER
268 struct delayed_work work;
269 gctTIMERFUNCTION function;
273 /******************************************************************************\
274 ******************************* Private Functions ******************************
275 \******************************************************************************/
282 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
283 return task_tgid_vnr(current);
285 return current->tgid;
294 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
295 return task_pid_vnr(current);
308 gcmkHEADER_ARG("ProcessID=%d", ProcessID);
310 mdl = (PLINUX_MDL)kzalloc(sizeof(struct _LINUX_MDL), GFP_KERNEL | gcdNOWARN);
317 mdl->pid = ProcessID;
322 gcmkFOOTER_ARG("0x%X", mdl);
329 IN PLINUX_MDL_MAP MdlMap
337 PLINUX_MDL_MAP mdlMap, next;
339 gcmkHEADER_ARG("Mdl=0x%X", Mdl);
341 /* Verify the arguments. */
342 gcmkVERIFY_ARGUMENT(Mdl != gcvNULL);
346 while (mdlMap != gcvNULL)
350 gcmkVERIFY_OK(_DestroyMdlMap(Mdl, mdlMap));
361 static PLINUX_MDL_MAP
367 PLINUX_MDL_MAP mdlMap;
369 gcmkHEADER_ARG("Mdl=0x%X ProcessID=%d", Mdl, ProcessID);
371 mdlMap = (PLINUX_MDL_MAP)kmalloc(sizeof(struct _LINUX_MDL_MAP), GFP_KERNEL | gcdNOWARN);
372 if (mdlMap == gcvNULL)
378 mdlMap->pid = ProcessID;
379 mdlMap->vmaAddr = gcvNULL;
380 mdlMap->vma = gcvNULL;
381 mdlMap->reference = 0;
383 mdlMap->next = Mdl->maps;
386 gcmkFOOTER_ARG("0x%X", mdlMap);
393 IN PLINUX_MDL_MAP MdlMap
396 PLINUX_MDL_MAP prevMdlMap;
398 gcmkHEADER_ARG("Mdl=0x%X MdlMap=0x%X", Mdl, MdlMap);
400 /* Verify the arguments. */
401 gcmkVERIFY_ARGUMENT(MdlMap != gcvNULL);
402 gcmkASSERT(Mdl->maps != gcvNULL);
404 if (Mdl->maps == MdlMap)
406 Mdl->maps = MdlMap->next;
410 prevMdlMap = Mdl->maps;
412 while (prevMdlMap->next != MdlMap)
414 prevMdlMap = prevMdlMap->next;
416 gcmkASSERT(prevMdlMap != gcvNULL);
419 prevMdlMap->next = MdlMap->next;
428 extern PLINUX_MDL_MAP
434 PLINUX_MDL_MAP mdlMap;
436 gcmkHEADER_ARG("Mdl=0x%X ProcessID=%d", Mdl, ProcessID);
444 while (mdlMap != gcvNULL)
446 if (mdlMap->pid == ProcessID)
448 gcmkFOOTER_ARG("0x%X", mdlMap);
452 mdlMap = mdlMap->next;
467 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
473 unsigned long addr = (unsigned long)Addr;
475 return addr >= VMALLOC_START && addr < VMALLOC_END;
481 IN struct page ** Pages,
482 IN gctUINT32 NumPages
487 gcmkHEADER_ARG("Pages=0x%X, NumPages=%d", Pages, NumPages);
489 gcmkASSERT(Pages != gcvNULL);
491 for (i = 0; i < NumPages; i++)
493 __free_page(Pages[i]);
496 if (is_vmalloc_addr(Pages))
508 static struct page **
510 IN gctUINT32 NumPages
513 struct page ** pages;
517 gcmkHEADER_ARG("NumPages=%lu", NumPages);
519 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 32)
520 if (NumPages > totalram_pages)
522 if (NumPages > num_physpages)
529 size = NumPages * sizeof(struct page *);
531 pages = kmalloc(size, GFP_KERNEL | gcdNOWARN);
535 pages = vmalloc(size);
544 for (i = 0; i < NumPages; i++)
546 p = alloc_page(GFP_KERNEL | __GFP_HIGHMEM | gcdNOWARN);
550 _NonContiguousFree(pages, i);
558 gcmkFOOTER_ARG("pages=0x%X", pages);
562 static inline struct page *
563 _NonContiguousToPage(
564 IN struct page ** Pages,
568 gcmkASSERT(Pages != gcvNULL);
572 static inline unsigned long
574 IN struct page ** Pages,
578 gcmkASSERT(Pages != gcvNULL);
579 return page_to_pfn(_NonContiguousToPage(Pages, Index));
582 static inline unsigned long
583 _NonContiguousToPhys(
584 IN struct page ** Pages,
588 gcmkASSERT(Pages != gcvNULL);
589 return page_to_phys(_NonContiguousToPage(Pages, Index));
593 #if gcdUSE_NON_PAGED_MEMORY_CACHE
596 _AddNonPagedMemoryCache(
598 #ifndef NO_DMA_COHERENT
608 gcsNonPagedMemoryCache *cache;
610 if (Os->cacheSize >= gcdUSE_NON_PAGED_MEMORY_CACHE)
615 /* Allocate the cache record */
616 cache = (gcsNonPagedMemoryCache *)kmalloc(sizeof(gcsNonPagedMemoryCache), GFP_ATOMIC);
618 if (cache == gcvNULL) return gcvFALSE;
620 #ifndef NO_DMA_COHERENT
623 cache->dmaHandle = DmaHandle;
625 cache->order = Order;
630 if (Os->cacheHead == gcvNULL)
632 cache->prev = gcvNULL;
633 cache->next = gcvNULL;
635 Os->cacheTail = cache;
639 /* Add to the tail. */
640 cache->prev = Os->cacheTail;
641 cache->next = gcvNULL;
642 Os->cacheTail->next = cache;
643 Os->cacheTail = cache;
651 #ifndef NO_DMA_COHERENT
653 _GetNonPagedMemoryCache(
656 dma_addr_t * DmaHandle
660 _GetNonPagedMemoryCache(
666 gcsNonPagedMemoryCache *cache;
667 #ifndef NO_DMA_COHERENT
673 if (Os->cacheHead == gcvNULL) return gcvNULL;
675 /* Find the right cache */
676 cache = Os->cacheHead;
678 while (cache != gcvNULL)
680 #ifndef NO_DMA_COHERENT
681 if (cache->size == Size) break;
683 if (cache->order == Order) break;
689 if (cache == gcvNULL) return gcvNULL;
691 /* Remove the cache from list */
692 if (cache == Os->cacheHead)
694 Os->cacheHead = cache->next;
696 if (Os->cacheHead == gcvNULL)
698 Os->cacheTail = gcvNULL;
703 cache->prev->next = cache->next;
705 if (cache == Os->cacheTail)
707 Os->cacheTail = cache->prev;
711 cache->next->prev = cache->prev;
716 #ifndef NO_DMA_COHERENT
718 *DmaHandle = cache->dmaHandle;
727 #ifndef NO_DMA_COHERENT
735 _FreeAllNonPagedMemoryCache(
739 gcsNonPagedMemoryCache *cache, *nextCache;
743 cache = Os->cacheHead;
745 while (cache != gcvNULL)
747 if (cache != Os->cacheTail)
749 nextCache = cache->next;
756 /* Remove the cache from list */
757 if (cache == Os->cacheHead)
759 Os->cacheHead = cache->next;
761 if (Os->cacheHead == gcvNULL)
763 Os->cacheTail = gcvNULL;
768 cache->prev->next = cache->next;
770 if (cache == Os->cacheTail)
772 Os->cacheTail = cache->prev;
776 cache->next->prev = cache->prev;
780 #ifndef NO_DMA_COHERENT
781 dma_free_coherent(gcvNULL,
786 free_pages((unsigned long)page_address(cache->page), cache->order);
797 #endif /* gcdUSE_NON_PAGED_MEMORY_CACHE */
799 /*******************************************************************************
800 ** Integer Id Management.
804 IN gcsINTEGER_DB_PTR Database,
805 IN gctPOINTER KernelPointer,
812 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 9, 0)
813 idr_preload(GFP_KERNEL | gcdNOWARN);
815 spin_lock(&Database->lock);
817 next = (Database->curr + 1 <= 0) ? 1 : Database->curr + 1;
818 result = idr_alloc(&Database->idr, KernelPointer, next, 0, GFP_ATOMIC);
822 Database->curr = *Id;
825 spin_unlock(&Database->lock);
831 return gcvSTATUS_OUT_OF_RESOURCES;
837 if (idr_pre_get(&Database->idr, GFP_KERNEL | gcdNOWARN) == 0)
839 return gcvSTATUS_OUT_OF_MEMORY;
842 spin_lock(&Database->lock);
844 next = (Database->curr + 1 <= 0) ? 1 : Database->curr + 1;
846 /* Try to get a id greater than current id. */
847 result = idr_get_new_above(&Database->idr, KernelPointer, next, Id);
851 Database->curr = *Id;
854 spin_unlock(&Database->lock);
856 if (result == -EAGAIN)
863 return gcvSTATUS_OUT_OF_RESOURCES;
872 IN gcsINTEGER_DB_PTR Database,
874 OUT gctPOINTER * KernelPointer
879 spin_lock(&Database->lock);
881 pointer = idr_find(&Database->idr, Id);
883 spin_unlock(&Database->lock);
887 *KernelPointer = pointer;
893 gcvLEVEL_ERROR, gcvZONE_OS,
894 "%s(%d) Id = %d is not found",
895 __FUNCTION__, __LINE__, Id);
897 return gcvSTATUS_NOT_FOUND;
903 IN gcsINTEGER_DB_PTR Database,
907 spin_lock(&Database->lock);
909 idr_remove(&Database->idr, Id);
911 spin_unlock(&Database->lock);
919 IN gctPOINTER Logical,
923 if (unlikely(current->mm == gcvNULL))
925 /* Do nothing if process is exiting. */
929 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0)
930 if (vm_munmap((unsigned long)Logical, Size) < 0)
933 gcvLEVEL_WARNING, gcvZONE_OS,
934 "%s(%d): vm_munmap failed",
935 __FUNCTION__, __LINE__
939 down_write(¤t->mm->mmap_sem);
940 if (do_munmap(current->mm, (unsigned long)Logical, Size) < 0)
943 gcvLEVEL_WARNING, gcvZONE_OS,
944 "%s(%d): do_munmap failed",
945 __FUNCTION__, __LINE__
948 up_write(¤t->mm->mmap_sem);
953 _QueryProcessPageTable(
954 IN gctPOINTER Logical,
955 OUT gctUINT32 * Address
959 gctUINTPTR_T logical = (gctUINTPTR_T)Logical;
967 return gcvSTATUS_NOT_FOUND;
970 pgd = pgd_offset(current->mm, logical);
971 if (pgd_none(*pgd) || pgd_bad(*pgd))
973 return gcvSTATUS_NOT_FOUND;
976 pud = pud_offset(pgd, logical);
977 if (pud_none(*pud) || pud_bad(*pud))
979 return gcvSTATUS_NOT_FOUND;
982 pmd = pmd_offset(pud, logical);
983 if (pmd_none(*pmd) || pmd_bad(*pmd))
985 return gcvSTATUS_NOT_FOUND;
988 pte = pte_offset_map_lock(current->mm, pmd, logical, &lock);
991 return gcvSTATUS_NOT_FOUND;
994 if (!pte_present(*pte))
996 pte_unmap_unlock(pte, lock);
997 return gcvSTATUS_NOT_FOUND;
1000 *Address = (pte_pfn(*pte) << PAGE_SHIFT) | (logical & ~PAGE_MASK);
1001 pte_unmap_unlock(pte, lock);
1003 return gcvSTATUS_OK;
1006 /*******************************************************************************
1010 ** Construct a new gckOS object.
1014 ** gctPOINTER Context
1015 ** Pointer to the gckGALDEVICE class.
1020 ** Pointer to a variable that will hold the pointer to the gckOS object.
1024 IN gctPOINTER Context,
1031 gcmkHEADER_ARG("Context=0x%X", Context);
1033 /* Verify the arguments. */
1034 gcmkVERIFY_ARGUMENT(Os != gcvNULL);
1036 /* Allocate the gckOS object. */
1037 os = (gckOS) kmalloc(gcmSIZEOF(struct _gckOS), GFP_KERNEL | gcdNOWARN);
1041 /* Out of memory. */
1042 gcmkFOOTER_ARG("status=%d", gcvSTATUS_OUT_OF_MEMORY);
1043 return gcvSTATUS_OUT_OF_MEMORY;
1046 /* Zero the memory. */
1047 gckOS_ZeroMemory(os, gcmSIZEOF(struct _gckOS));
1049 /* Initialize the gckOS object. */
1050 os->object.type = gcvOBJ_OS;
1052 /* Set device device. */
1053 os->device = Context;
1055 /* IMPORTANT! No heap yet. */
1058 /* Initialize the memory lock. */
1059 gcmkONERROR(gckOS_CreateMutex(os, &os->memoryLock));
1060 gcmkONERROR(gckOS_CreateMutex(os, &os->memoryMapLock));
1062 /* Create debug lock mutex. */
1063 gcmkONERROR(gckOS_CreateMutex(os, &os->debugLock));
1066 os->mdlHead = os->mdlTail = gcvNULL;
1068 /* Get the kernel process ID. */
1069 gcmkONERROR(gckOS_GetProcessID(&os->kernelProcessID));
1072 * Initialize the signal manager.
1075 /* Initialize mutex. */
1076 gcmkONERROR(gckOS_CreateMutex(os, &os->signalMutex));
1078 /* Initialize signal id database lock. */
1079 spin_lock_init(&os->signalDB.lock);
1081 /* Initialize signal id database. */
1082 idr_init(&os->signalDB.idr);
1084 #if gcdANDROID_NATIVE_FENCE_SYNC
1086 * Initialize the sync point manager.
1089 /* Initialize mutex. */
1090 gcmkONERROR(gckOS_CreateMutex(os, &os->syncPointMutex));
1092 /* Initialize sync point id database lock. */
1093 spin_lock_init(&os->syncPointDB.lock);
1095 /* Initialize sync point id database. */
1096 idr_init(&os->syncPointDB.idr);
1099 #if gcdUSE_NON_PAGED_MEMORY_CACHE
1101 os->cacheHead = gcvNULL;
1102 os->cacheTail = gcvNULL;
1105 /* Create a workqueue for os timer. */
1106 os->workqueue = create_singlethread_workqueue("galcore workqueue");
1108 if (os->workqueue == gcvNULL)
1110 /* Out of memory. */
1111 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
1114 /* Return pointer to the gckOS object. */
1118 gcmkFOOTER_ARG("*Os=0x%X", *Os);
1119 return gcvSTATUS_OK;
1123 #if gcdANDROID_NATIVE_FENCE_SYNC
1124 if (os->syncPointMutex != gcvNULL)
1127 gckOS_DeleteMutex(os, os->syncPointMutex));
1131 if (os->signalMutex != gcvNULL)
1134 gckOS_DeleteMutex(os, os->signalMutex));
1137 if (os->heap != gcvNULL)
1140 gckHEAP_Destroy(os->heap));
1143 if (os->memoryMapLock != gcvNULL)
1146 gckOS_DeleteMutex(os, os->memoryMapLock));
1149 if (os->memoryLock != gcvNULL)
1152 gckOS_DeleteMutex(os, os->memoryLock));
1155 if (os->debugLock != gcvNULL)
1158 gckOS_DeleteMutex(os, os->debugLock));
1161 if (os->workqueue != gcvNULL)
1163 destroy_workqueue(os->workqueue);
1168 /* Return the error. */
1173 /*******************************************************************************
1177 ** Destroy an gckOS object.
1182 ** Pointer to an gckOS object that needs to be destroyed.
1195 gcmkHEADER_ARG("Os=0x%X", Os);
1197 /* Verify the arguments. */
1198 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
1200 #if gcdUSE_NON_PAGED_MEMORY_CACHE
1201 _FreeAllNonPagedMemoryCache(Os);
1204 #if gcdANDROID_NATIVE_FENCE_SYNC
1206 * Destroy the sync point manager.
1209 /* Destroy the mutex. */
1210 gcmkVERIFY_OK(gckOS_DeleteMutex(Os, Os->syncPointMutex));
1214 * Destroy the signal manager.
1217 /* Destroy the mutex. */
1218 gcmkVERIFY_OK(gckOS_DeleteMutex(Os, Os->signalMutex));
1220 if (Os->heap != gcvNULL)
1222 /* Mark gckHEAP as gone. */
1226 /* Destroy the gckHEAP object. */
1227 gcmkVERIFY_OK(gckHEAP_Destroy(heap));
1230 /* Destroy the memory lock. */
1231 gcmkVERIFY_OK(gckOS_DeleteMutex(Os, Os->memoryMapLock));
1232 gcmkVERIFY_OK(gckOS_DeleteMutex(Os, Os->memoryLock));
1234 /* Destroy debug lock mutex. */
1235 gcmkVERIFY_OK(gckOS_DeleteMutex(Os, Os->debugLock));
1237 /* Wait for all works done. */
1238 flush_workqueue(Os->workqueue);
1240 /* Destory work queue. */
1241 destroy_workqueue(Os->workqueue);
1243 /* Flush the debug cache. */
1244 gcmkDEBUGFLUSH(~0U);
1246 /* Mark the gckOS object as unknown. */
1247 Os->object.type = gcvOBJ_UNKNOWN;
1249 /* Free the gckOS object. */
1254 return gcvSTATUS_OK;
1258 _CreateKernelVirtualMapping(
1263 gctINT numPages = Mdl->numPages;
1265 #if gcdNONPAGED_MEMORY_CACHEABLE
1266 if (Mdl->contiguous)
1268 addr = page_address(Mdl->u.contiguousPages);
1272 addr = vmap(Mdl->u.nonContiguousPages,
1277 /* Trigger a page fault. */
1278 memset(addr, 0, numPages * PAGE_SIZE);
1281 struct page ** pages;
1282 gctBOOL free = gcvFALSE;
1285 if (Mdl->contiguous)
1287 pages = kmalloc(sizeof(struct page *) * numPages, GFP_KERNEL | gcdNOWARN);
1294 for (i = 0; i < numPages; i++)
1296 pages[i] = nth_page(Mdl->u.contiguousPages, i);
1303 pages = Mdl->u.nonContiguousPages;
1306 /* ioremap() can't work on system memory since 2.6.38. */
1307 addr = vmap(pages, numPages, 0, gcmkNONPAGED_MEMROY_PROT(PAGE_KERNEL));
1309 /* Trigger a page fault. */
1310 memset(addr, 0, numPages * PAGE_SIZE);
1323 _DestoryKernelVirtualMapping(
1327 #if !gcdNONPAGED_MEMORY_CACHEABLE
1333 gckOS_CreateKernelVirtualMapping(
1334 IN gctPHYS_ADDR Physical,
1335 OUT gctSIZE_T * PageCount,
1336 OUT gctPOINTER * Logical
1339 *PageCount = ((PLINUX_MDL)Physical)->numPages;
1340 *Logical = _CreateKernelVirtualMapping((PLINUX_MDL)Physical);
1342 return gcvSTATUS_OK;
1346 gckOS_DestroyKernelVirtualMapping(
1347 IN gctPOINTER Logical
1350 _DestoryKernelVirtualMapping((gctSTRING)Logical);
1351 return gcvSTATUS_OK;
1354 /*******************************************************************************
1363 ** Pointer to an gckOS object.
1366 ** Number of bytes to allocate.
1370 ** gctPOINTER * Memory
1371 ** Pointer to a variable that will hold the allocated memory location.
1377 OUT gctPOINTER * Memory
1382 gcmkHEADER_ARG("Os=0x%X Bytes=%lu", Os, Bytes);
1384 /* Verify the arguments. */
1385 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
1386 gcmkVERIFY_ARGUMENT(Bytes > 0);
1387 gcmkVERIFY_ARGUMENT(Memory != gcvNULL);
1389 /* Do we have a heap? */
1390 if (Os->heap != gcvNULL)
1392 /* Allocate from the heap. */
1393 gcmkONERROR(gckHEAP_Allocate(Os->heap, Bytes, Memory));
1397 gcmkONERROR(gckOS_AllocateMemory(Os, Bytes, Memory));
1401 gcmkFOOTER_ARG("*Memory=0x%X", *Memory);
1402 return gcvSTATUS_OK;
1405 /* Return the status. */
1410 /*******************************************************************************
1414 ** Free allocated memory.
1419 ** Pointer to an gckOS object.
1421 ** gctPOINTER Memory
1422 ** Pointer to memory allocation to free.
1431 IN gctPOINTER Memory
1436 gcmkHEADER_ARG("Os=0x%X Memory=0x%X", Os, Memory);
1438 /* Verify the arguments. */
1439 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
1440 gcmkVERIFY_ARGUMENT(Memory != gcvNULL);
1442 /* Do we have a heap? */
1443 if (Os->heap != gcvNULL)
1445 /* Free from the heap. */
1446 gcmkONERROR(gckHEAP_Free(Os->heap, Memory));
1450 gcmkONERROR(gckOS_FreeMemory(Os, Memory));
1455 return gcvSTATUS_OK;
1458 /* Return the status. */
1463 /*******************************************************************************
1465 ** gckOS_AllocateMemory
1467 ** Allocate memory wrapper.
1472 ** Number of bytes to allocate.
1476 ** gctPOINTER * Memory
1477 ** Pointer to a variable that will hold the allocated memory location.
1480 gckOS_AllocateMemory(
1483 OUT gctPOINTER * Memory
1489 gcmkHEADER_ARG("Os=0x%X Bytes=%lu", Os, Bytes);
1491 /* Verify the arguments. */
1492 gcmkVERIFY_ARGUMENT(Bytes > 0);
1493 gcmkVERIFY_ARGUMENT(Memory != gcvNULL);
1495 if (Bytes > PAGE_SIZE)
1497 memory = (gctPOINTER) vmalloc(Bytes);
1501 memory = (gctPOINTER) kmalloc(Bytes, GFP_KERNEL | gcdNOWARN);
1504 if (memory == gcvNULL)
1506 /* Out of memory. */
1507 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
1510 /* Return pointer to the memory allocation. */
1514 gcmkFOOTER_ARG("*Memory=0x%X", *Memory);
1515 return gcvSTATUS_OK;
1518 /* Return the status. */
1523 /*******************************************************************************
1527 ** Free allocated memory wrapper.
1531 ** gctPOINTER Memory
1532 ** Pointer to memory allocation to free.
1541 IN gctPOINTER Memory
1544 gcmkHEADER_ARG("Memory=0x%X", Memory);
1546 /* Verify the arguments. */
1547 gcmkVERIFY_ARGUMENT(Memory != gcvNULL);
1549 /* Free the memory from the OS pool. */
1550 if (is_vmalloc_addr(Memory))
1561 return gcvSTATUS_OK;
1564 /*******************************************************************************
1568 ** Map physical memory into the current process.
1573 ** Pointer to an gckOS object.
1575 ** gctPHYS_ADDR Physical
1576 ** Start of physical address memory.
1579 ** Number of bytes to map.
1583 ** gctPOINTER * Memory
1584 ** Pointer to a variable that will hold the logical address of the
1590 IN gctPHYS_ADDR Physical,
1592 OUT gctPOINTER * Logical
1595 PLINUX_MDL_MAP mdlMap;
1596 PLINUX_MDL mdl = (PLINUX_MDL)Physical;
1598 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Bytes=%lu", Os, Physical, Bytes);
1600 /* Verify the arguments. */
1601 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
1602 gcmkVERIFY_ARGUMENT(Physical != 0);
1603 gcmkVERIFY_ARGUMENT(Bytes > 0);
1604 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
1608 mdlMap = FindMdlMap(mdl, _GetProcessID());
1610 if (mdlMap == gcvNULL)
1612 mdlMap = _CreateMdlMap(mdl, _GetProcessID());
1614 if (mdlMap == gcvNULL)
1618 gcmkFOOTER_ARG("status=%d", gcvSTATUS_OUT_OF_MEMORY);
1619 return gcvSTATUS_OUT_OF_MEMORY;
1623 if (mdlMap->vmaAddr == gcvNULL)
1625 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0)
1626 mdlMap->vmaAddr = (char *)vm_mmap(gcvNULL,
1628 mdl->numPages * PAGE_SIZE,
1629 PROT_READ | PROT_WRITE,
1633 down_write(¤t->mm->mmap_sem);
1635 mdlMap->vmaAddr = (char *)do_mmap_pgoff(gcvNULL,
1637 mdl->numPages * PAGE_SIZE,
1638 PROT_READ | PROT_WRITE,
1642 up_write(¤t->mm->mmap_sem);
1645 if (IS_ERR(mdlMap->vmaAddr))
1649 "%s(%d): do_mmap_pgoff error",
1650 __FUNCTION__, __LINE__
1655 "%s(%d): mdl->numPages: %d mdl->vmaAddr: 0x%X",
1656 __FUNCTION__, __LINE__,
1661 mdlMap->vmaAddr = gcvNULL;
1665 gcmkFOOTER_ARG("status=%d", gcvSTATUS_OUT_OF_MEMORY);
1666 return gcvSTATUS_OUT_OF_MEMORY;
1669 down_write(¤t->mm->mmap_sem);
1671 mdlMap->vma = find_vma(current->mm, (unsigned long)mdlMap->vmaAddr);
1677 "%s(%d): find_vma error.",
1678 __FUNCTION__, __LINE__
1681 mdlMap->vmaAddr = gcvNULL;
1683 up_write(¤t->mm->mmap_sem);
1687 gcmkFOOTER_ARG("status=%d", gcvSTATUS_OUT_OF_RESOURCES);
1688 return gcvSTATUS_OUT_OF_RESOURCES;
1691 #ifndef NO_DMA_COHERENT
1692 if (dma_mmap_coherent(gcvNULL,
1696 mdl->numPages * PAGE_SIZE) < 0)
1698 up_write(¤t->mm->mmap_sem);
1702 "%s(%d): dma_mmap_coherent error.",
1703 __FUNCTION__, __LINE__
1706 mdlMap->vmaAddr = gcvNULL;
1710 gcmkFOOTER_ARG("status=%d", gcvSTATUS_OUT_OF_RESOURCES);
1711 return gcvSTATUS_OUT_OF_RESOURCES;
1714 #if !gcdPAGED_MEMORY_CACHEABLE
1715 mdlMap->vma->vm_page_prot = gcmkPAGED_MEMROY_PROT(mdlMap->vma->vm_page_prot);
1716 mdlMap->vma->vm_flags |= gcdVM_FLAGS;
1718 mdlMap->vma->vm_pgoff = 0;
1720 if (remap_pfn_range(mdlMap->vma,
1721 mdlMap->vma->vm_start,
1722 mdl->dmaHandle >> PAGE_SHIFT,
1723 mdl->numPages*PAGE_SIZE,
1724 mdlMap->vma->vm_page_prot) < 0)
1726 up_write(¤t->mm->mmap_sem);
1730 "%s(%d): remap_pfn_range error.",
1731 __FUNCTION__, __LINE__
1734 mdlMap->vmaAddr = gcvNULL;
1738 gcmkFOOTER_ARG("status=%d", gcvSTATUS_OUT_OF_RESOURCES);
1739 return gcvSTATUS_OUT_OF_RESOURCES;
1743 up_write(¤t->mm->mmap_sem);
1748 *Logical = mdlMap->vmaAddr;
1750 gcmkFOOTER_ARG("*Logical=0x%X", *Logical);
1751 return gcvSTATUS_OK;
1754 /*******************************************************************************
1756 ** gckOS_UnmapMemory
1758 ** Unmap physical memory out of the current process.
1763 ** Pointer to an gckOS object.
1765 ** gctPHYS_ADDR Physical
1766 ** Start of physical address memory.
1769 ** Number of bytes to unmap.
1771 ** gctPOINTER Memory
1772 ** Pointer to a previously mapped memory region.
1781 IN gctPHYS_ADDR Physical,
1783 IN gctPOINTER Logical
1786 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Bytes=%lu Logical=0x%X",
1787 Os, Physical, Bytes, Logical);
1789 /* Verify the arguments. */
1790 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
1791 gcmkVERIFY_ARGUMENT(Physical != 0);
1792 gcmkVERIFY_ARGUMENT(Bytes > 0);
1793 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
1795 gckOS_UnmapMemoryEx(Os, Physical, Bytes, Logical, _GetProcessID());
1799 return gcvSTATUS_OK;
1803 /*******************************************************************************
1805 ** gckOS_UnmapMemoryEx
1807 ** Unmap physical memory in the specified process.
1812 ** Pointer to an gckOS object.
1814 ** gctPHYS_ADDR Physical
1815 ** Start of physical address memory.
1818 ** Number of bytes to unmap.
1820 ** gctPOINTER Memory
1821 ** Pointer to a previously mapped memory region.
1824 ** Pid of the process that opened the device and mapped this memory.
1831 gckOS_UnmapMemoryEx(
1833 IN gctPHYS_ADDR Physical,
1835 IN gctPOINTER Logical,
1839 PLINUX_MDL_MAP mdlMap;
1840 PLINUX_MDL mdl = (PLINUX_MDL)Physical;
1842 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Bytes=%lu Logical=0x%X PID=%d",
1843 Os, Physical, Bytes, Logical, PID);
1845 /* Verify the arguments. */
1846 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
1847 gcmkVERIFY_ARGUMENT(Physical != 0);
1848 gcmkVERIFY_ARGUMENT(Bytes > 0);
1849 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
1850 gcmkVERIFY_ARGUMENT(PID != 0);
1856 mdlMap = FindMdlMap(mdl, PID);
1858 if (mdlMap == gcvNULL || mdlMap->vmaAddr == gcvNULL)
1862 gcmkFOOTER_ARG("status=%d", gcvSTATUS_INVALID_ARGUMENT);
1863 return gcvSTATUS_INVALID_ARGUMENT;
1866 _UnmapUserLogical(PID, mdlMap->vmaAddr, mdl->numPages * PAGE_SIZE);
1868 gcmkVERIFY_OK(_DestroyMdlMap(mdl, mdlMap));
1875 return gcvSTATUS_OK;
1878 /*******************************************************************************
1880 ** gckOS_UnmapUserLogical
1882 ** Unmap user logical memory out of physical memory.
1887 ** Pointer to an gckOS object.
1889 ** gctPHYS_ADDR Physical
1890 ** Start of physical address memory.
1893 ** Number of bytes to unmap.
1895 ** gctPOINTER Memory
1896 ** Pointer to a previously mapped memory region.
1903 gckOS_UnmapUserLogical(
1905 IN gctPHYS_ADDR Physical,
1907 IN gctPOINTER Logical
1910 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Bytes=%lu Logical=0x%X",
1911 Os, Physical, Bytes, Logical);
1913 /* Verify the arguments. */
1914 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
1915 gcmkVERIFY_ARGUMENT(Physical != 0);
1916 gcmkVERIFY_ARGUMENT(Bytes > 0);
1917 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
1919 gckOS_UnmapMemory(Os, Physical, Bytes, Logical);
1923 return gcvSTATUS_OK;
1927 /*******************************************************************************
1929 ** gckOS_AllocateNonPagedMemory
1931 ** Allocate a number of pages from non-paged memory.
1936 ** Pointer to an gckOS object.
1938 ** gctBOOL InUserSpace
1939 ** gcvTRUE if the pages need to be mapped into user space.
1941 ** gctSIZE_T * Bytes
1942 ** Pointer to a variable that holds the number of bytes to allocate.
1946 ** gctSIZE_T * Bytes
1947 ** Pointer to a variable that hold the number of bytes allocated.
1949 ** gctPHYS_ADDR * Physical
1950 ** Pointer to a variable that will hold the physical address of the
1953 ** gctPOINTER * Logical
1954 ** Pointer to a variable that will hold the logical address of the
1958 gckOS_AllocateNonPagedMemory(
1960 IN gctBOOL InUserSpace,
1961 IN OUT gctSIZE_T * Bytes,
1962 OUT gctPHYS_ADDR * Physical,
1963 OUT gctPOINTER * Logical
1968 PLINUX_MDL mdl = gcvNULL;
1969 PLINUX_MDL_MAP mdlMap = gcvNULL;
1971 #ifdef NO_DMA_COHERENT
1976 gctBOOL locked = gcvFALSE;
1979 gcmkHEADER_ARG("Os=0x%X InUserSpace=%d *Bytes=%lu",
1980 Os, InUserSpace, gcmOPT_VALUE(Bytes));
1982 /* Verify the arguments. */
1983 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
1984 gcmkVERIFY_ARGUMENT(Bytes != gcvNULL);
1985 gcmkVERIFY_ARGUMENT(*Bytes > 0);
1986 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
1987 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
1989 /* Align number of bytes to page size. */
1990 bytes = gcmALIGN(*Bytes, PAGE_SIZE);
1992 /* Get total number of pages.. */
1993 numPages = GetPageCount(bytes, 0);
1995 /* Allocate mdl+vector structure */
1996 mdl = _CreateMdl(_GetProcessID());
1999 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
2003 mdl->numPages = numPages;
2008 #ifndef NO_DMA_COHERENT
2009 #if gcdUSE_NON_PAGED_MEMORY_CACHE
2010 addr = _GetNonPagedMemoryCache(Os,
2011 mdl->numPages * PAGE_SIZE,
2014 if (addr == gcvNULL)
2017 addr = dma_alloc_coherent(gcvNULL,
2018 mdl->numPages * PAGE_SIZE,
2020 GFP_KERNEL | gcdNOWARN);
2023 size = mdl->numPages * PAGE_SIZE;
2024 order = get_order(size);
2025 #if gcdUSE_NON_PAGED_MEMORY_CACHE
2026 page = _GetNonPagedMemoryCache(Os, order);
2028 if (page == gcvNULL)
2031 page = alloc_pages(GFP_KERNEL | gcdNOWARN, order);
2034 if (page == gcvNULL)
2036 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
2039 vaddr = (gctPOINTER)page_address(page);
2040 mdl->contiguous = gcvTRUE;
2041 mdl->u.contiguousPages = page;
2042 addr = _CreateKernelVirtualMapping(mdl);
2043 mdl->dmaHandle = virt_to_phys(vaddr);
2045 mdl->u.contiguousPages = page;
2047 #if !defined(CONFIG_PPC)
2048 /* Cache invalidate. */
2049 dma_sync_single_for_device(
2058 SetPageReserved(virt_to_page(vaddr));
2065 if (addr == gcvNULL)
2067 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
2072 /* Return allocated memory. */
2074 *Physical = (gctPHYS_ADDR) mdl;
2078 mdlMap = _CreateMdlMap(mdl, _GetProcessID());
2080 if (mdlMap == gcvNULL)
2082 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
2085 /* Only after mmap this will be valid. */
2087 /* We need to map this to user space. */
2088 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0)
2089 mdlMap->vmaAddr = (gctSTRING) vm_mmap(gcvNULL,
2091 mdl->numPages * PAGE_SIZE,
2092 PROT_READ | PROT_WRITE,
2096 down_write(¤t->mm->mmap_sem);
2098 mdlMap->vmaAddr = (gctSTRING) do_mmap_pgoff(gcvNULL,
2100 mdl->numPages * PAGE_SIZE,
2101 PROT_READ | PROT_WRITE,
2105 up_write(¤t->mm->mmap_sem);
2108 if (IS_ERR(mdlMap->vmaAddr))
2111 gcvLEVEL_WARNING, gcvZONE_OS,
2112 "%s(%d): do_mmap_pgoff error",
2113 __FUNCTION__, __LINE__
2116 mdlMap->vmaAddr = gcvNULL;
2118 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
2121 down_write(¤t->mm->mmap_sem);
2123 mdlMap->vma = find_vma(current->mm, (unsigned long)mdlMap->vmaAddr);
2125 if (mdlMap->vma == gcvNULL)
2128 gcvLEVEL_WARNING, gcvZONE_OS,
2129 "%s(%d): find_vma error",
2130 __FUNCTION__, __LINE__
2133 up_write(¤t->mm->mmap_sem);
2135 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
2138 #ifndef NO_DMA_COHERENT
2139 if (dma_mmap_coherent(gcvNULL,
2143 mdl->numPages * PAGE_SIZE) < 0)
2146 gcvLEVEL_WARNING, gcvZONE_OS,
2147 "%s(%d): dma_mmap_coherent error",
2148 __FUNCTION__, __LINE__
2151 up_write(¤t->mm->mmap_sem);
2153 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
2156 mdlMap->vma->vm_page_prot = gcmkNONPAGED_MEMROY_PROT(mdlMap->vma->vm_page_prot);
2157 mdlMap->vma->vm_flags |= gcdVM_FLAGS;
2158 mdlMap->vma->vm_pgoff = 0;
2160 if (remap_pfn_range(mdlMap->vma,
2161 mdlMap->vma->vm_start,
2162 mdl->dmaHandle >> PAGE_SHIFT,
2163 mdl->numPages * PAGE_SIZE,
2164 mdlMap->vma->vm_page_prot))
2167 gcvLEVEL_WARNING, gcvZONE_OS,
2168 "%s(%d): remap_pfn_range error",
2169 __FUNCTION__, __LINE__
2172 up_write(¤t->mm->mmap_sem);
2174 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
2176 #endif /* NO_DMA_COHERENT */
2178 up_write(¤t->mm->mmap_sem);
2180 *Logical = mdlMap->vmaAddr;
2184 *Logical = (gctPOINTER)mdl->addr;
2188 * Add this to a global list.
2189 * Will be used by get physical address
2190 * and mapuser pointer functions.
2195 /* Initialize the queue. */
2196 Os->mdlHead = Os->mdlTail = mdl;
2200 /* Add to the tail. */
2201 mdl->prev = Os->mdlTail;
2202 Os->mdlTail->next = mdl;
2209 gcmkFOOTER_ARG("*Bytes=%lu *Physical=0x%X *Logical=0x%X",
2210 *Bytes, *Physical, *Logical);
2211 return gcvSTATUS_OK;
2214 if (mdlMap != gcvNULL)
2216 /* Free LINUX_MDL_MAP. */
2217 gcmkVERIFY_OK(_DestroyMdlMap(mdl, mdlMap));
2222 /* Free LINUX_MDL. */
2223 gcmkVERIFY_OK(_DestroyMdl(mdl));
2228 /* Unlock memory. */
2232 /* Return the status. */
2237 /*******************************************************************************
2239 ** gckOS_FreeNonPagedMemory
2241 ** Free previously allocated and mapped pages from non-paged memory.
2246 ** Pointer to an gckOS object.
2249 ** Number of bytes allocated.
2251 ** gctPHYS_ADDR Physical
2252 ** Physical address of the allocated memory.
2254 ** gctPOINTER Logical
2255 ** Logical address of the allocated memory.
2261 gceSTATUS gckOS_FreeNonPagedMemory(
2264 IN gctPHYS_ADDR Physical,
2265 IN gctPOINTER Logical
2269 PLINUX_MDL_MAP mdlMap;
2270 #ifdef NO_DMA_COHERENT
2273 #endif /* NO_DMA_COHERENT */
2275 gcmkHEADER_ARG("Os=0x%X Bytes=%lu Physical=0x%X Logical=0x%X",
2276 Os, Bytes, Physical, Logical);
2278 /* Verify the arguments. */
2279 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
2280 gcmkVERIFY_ARGUMENT(Bytes > 0);
2281 gcmkVERIFY_ARGUMENT(Physical != 0);
2282 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
2284 /* Convert physical address into a pointer to a MDL. */
2285 mdl = (PLINUX_MDL) Physical;
2289 #ifndef NO_DMA_COHERENT
2290 #if gcdUSE_NON_PAGED_MEMORY_CACHE
2291 if (!_AddNonPagedMemoryCache(Os,
2292 mdl->numPages * PAGE_SIZE,
2297 dma_free_coherent(gcvNULL,
2298 mdl->numPages * PAGE_SIZE,
2303 size = mdl->numPages * PAGE_SIZE;
2308 ClearPageReserved(virt_to_page(vaddr));
2314 #if gcdUSE_NON_PAGED_MEMORY_CACHE
2315 if (!_AddNonPagedMemoryCache(Os,
2316 get_order(mdl->numPages * PAGE_SIZE),
2317 virt_to_page(mdl->kaddr)))
2320 free_pages((unsigned long)mdl->kaddr, get_order(mdl->numPages * PAGE_SIZE));
2323 _DestoryKernelVirtualMapping(mdl->addr);
2324 #endif /* NO_DMA_COHERENT */
2328 while (mdlMap != gcvNULL)
2330 if (mdlMap->vmaAddr != gcvNULL)
2332 /* No mapped memory exists when free nonpaged memory */
2336 mdlMap = mdlMap->next;
2339 /* Remove the node from global list.. */
2340 if (mdl == Os->mdlHead)
2342 if ((Os->mdlHead = mdl->next) == gcvNULL)
2344 Os->mdlTail = gcvNULL;
2349 mdl->prev->next = mdl->next;
2350 if (mdl == Os->mdlTail)
2352 Os->mdlTail = mdl->prev;
2356 mdl->next->prev = mdl->prev;
2362 gcmkVERIFY_OK(_DestroyMdl(mdl));
2366 return gcvSTATUS_OK;
2369 /*******************************************************************************
2371 ** gckOS_ReadRegister
2373 ** Read data from a register.
2378 ** Pointer to an gckOS object.
2380 ** gctUINT32 Address
2381 ** Address of register.
2386 ** Pointer to a variable that receives the data read from the register.
2391 IN gctUINT32 Address,
2392 OUT gctUINT32 * Data
2395 return gckOS_ReadRegisterEx(Os, gcvCORE_MAJOR, Address, Data);
2399 gckOS_ReadRegisterEx(
2402 IN gctUINT32 Address,
2403 OUT gctUINT32 * Data
2406 gcmkHEADER_ARG("Os=0x%X Core=%d Address=0x%X", Os, Core, Address);
2408 /* Verify the arguments. */
2409 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
2410 gcmkVERIFY_ARGUMENT(Address < Os->device->requestedRegisterMemSizes[Core]);
2411 gcmkVERIFY_ARGUMENT(Data != gcvNULL);
2413 *Data = readl((gctUINT8 *)Os->device->registerBases[Core] + Address);
2416 gcmkFOOTER_ARG("*Data=0x%08x", *Data);
2417 return gcvSTATUS_OK;
2420 /*******************************************************************************
2422 ** gckOS_WriteRegister
2424 ** Write data to a register.
2429 ** Pointer to an gckOS object.
2431 ** gctUINT32 Address
2432 ** Address of register.
2435 ** Data for register.
2442 gckOS_WriteRegister(
2444 IN gctUINT32 Address,
2448 return gckOS_WriteRegisterEx(Os, gcvCORE_MAJOR, Address, Data);
2452 gckOS_WriteRegisterEx(
2455 IN gctUINT32 Address,
2459 gcmkHEADER_ARG("Os=0x%X Core=%d Address=0x%X Data=0x%08x", Os, Core, Address, Data);
2461 gcmkVERIFY_ARGUMENT(Address < Os->device->requestedRegisterMemSizes[Core]);
2463 writel(Data, (gctUINT8 *)Os->device->registerBases[Core] + Address);
2467 return gcvSTATUS_OK;
2470 /*******************************************************************************
2472 ** gckOS_GetPageSize
2474 ** Get the system's page size.
2479 ** Pointer to an gckOS object.
2483 ** gctSIZE_T * PageSize
2484 ** Pointer to a variable that will receive the system's page size.
2486 gceSTATUS gckOS_GetPageSize(
2488 OUT gctSIZE_T * PageSize
2491 gcmkHEADER_ARG("Os=0x%X", Os);
2493 /* Verify the arguments. */
2494 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
2495 gcmkVERIFY_ARGUMENT(PageSize != gcvNULL);
2497 /* Return the page size. */
2498 *PageSize = (gctSIZE_T) PAGE_SIZE;
2501 gcmkFOOTER_ARG("*PageSize", *PageSize);
2502 return gcvSTATUS_OK;
2505 /*******************************************************************************
2507 ** gckOS_GetPhysicalAddress
2509 ** Get the physical system address of a corresponding virtual address.
2514 ** Pointer to an gckOS object.
2516 ** gctPOINTER Logical
2521 ** gctUINT32 * Address
2522 ** Poinetr to a variable that receives the 32-bit physical adress.
2525 gckOS_GetPhysicalAddress(
2527 IN gctPOINTER Logical,
2528 OUT gctUINT32 * Address
2532 gctUINT32 processID;
2534 gcmkHEADER_ARG("Os=0x%X Logical=0x%X", Os, Logical);
2536 /* Verify the arguments. */
2537 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
2538 gcmkVERIFY_ARGUMENT(Address != gcvNULL);
2540 /* Query page table of current process first. */
2541 status = _QueryProcessPageTable(Logical, Address);
2543 if (gcmIS_ERROR(status))
2545 /* Get current process ID. */
2546 processID = _GetProcessID();
2548 /* Route through other function. */
2550 gckOS_GetPhysicalAddressProcess(Os, Logical, processID, Address));
2554 gcmkFOOTER_ARG("*Address=0x%08x", *Address);
2555 return gcvSTATUS_OK;
2558 /* Return the status. */
2567 IN gctUINT32 Physical,
2568 IN gctPOINTER Logical,
2573 gcsUSER_MAPPING_PTR map;
2575 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Logical=0x%X Bytes=%lu",
2576 Os, Physical, Logical, Bytes);
2578 gcmkONERROR(gckOS_Allocate(Os,
2579 gcmSIZEOF(gcsUSER_MAPPING),
2580 (gctPOINTER *) &map));
2582 map->next = Os->userMap;
2583 map->physical = Physical - Os->device->baseAddress;
2584 map->logical = Logical;
2586 map->start = (gctINT8_PTR) Logical;
2587 map->end = map->start + Bytes;
2592 return gcvSTATUS_OK;
2600 gckOS_RemoveMapping(
2602 IN gctPOINTER Logical,
2607 gcsUSER_MAPPING_PTR map, prev;
2609 gcmkHEADER_ARG("Os=0x%X Logical=0x%X Bytes=%lu", Os, Logical, Bytes);
2611 for (map = Os->userMap, prev = gcvNULL; map != gcvNULL; map = map->next)
2613 if ((map->logical == Logical)
2614 && (map->bytes == Bytes)
2625 gcmkONERROR(gcvSTATUS_INVALID_ADDRESS);
2628 if (prev == gcvNULL)
2630 Os->userMap = map->next;
2634 prev->next = map->next;
2637 gcmkONERROR(gcmkOS_SAFE_FREE(Os, map));
2640 return gcvSTATUS_OK;
2649 _ConvertLogical2Physical(
2651 IN gctPOINTER Logical,
2652 IN gctUINT32 ProcessID,
2654 OUT gctUINT32_PTR Physical
2657 gctINT8_PTR base, vBase;
2660 gcsUSER_MAPPING_PTR userMap;
2662 base = (Mdl == gcvNULL) ? gcvNULL : (gctINT8_PTR) Mdl->addr;
2664 /* Check for the logical address match. */
2665 if ((base != gcvNULL)
2666 && ((gctINT8_PTR) Logical >= base)
2667 && ((gctINT8_PTR) Logical < base + Mdl->numPages * PAGE_SIZE)
2670 offset = (gctINT8_PTR) Logical - base;
2672 if (Mdl->dmaHandle != 0)
2674 /* The memory was from coherent area. */
2675 *Physical = (gctUINT32) Mdl->dmaHandle + offset;
2677 else if (Mdl->pagedMem && !Mdl->contiguous)
2679 /* paged memory is not mapped to kernel space. */
2680 return gcvSTATUS_INVALID_ADDRESS;
2684 *Physical = gcmPTR2INT(virt_to_phys(base)) + offset;
2687 return gcvSTATUS_OK;
2690 /* Walk user maps. */
2691 for (userMap = Os->userMap; userMap != gcvNULL; userMap = userMap->next)
2693 if (((gctINT8_PTR) Logical >= userMap->start)
2694 && ((gctINT8_PTR) Logical < userMap->end)
2697 *Physical = userMap->physical
2698 + (gctUINT32) ((gctINT8_PTR) Logical - userMap->start);
2700 return gcvSTATUS_OK;
2704 if (ProcessID != Os->kernelProcessID)
2706 map = FindMdlMap(Mdl, (gctINT) ProcessID);
2707 vBase = (map == gcvNULL) ? gcvNULL : (gctINT8_PTR) map->vmaAddr;
2709 /* Is the given address within that range. */
2710 if ((vBase != gcvNULL)
2711 && ((gctINT8_PTR) Logical >= vBase)
2712 && ((gctINT8_PTR) Logical < vBase + Mdl->numPages * PAGE_SIZE)
2715 offset = (gctINT8_PTR) Logical - vBase;
2717 if (Mdl->dmaHandle != 0)
2719 /* The memory was from coherent area. */
2720 *Physical = (gctUINT32) Mdl->dmaHandle + offset;
2722 else if (Mdl->pagedMem && !Mdl->contiguous)
2724 *Physical = _NonContiguousToPhys(Mdl->u.nonContiguousPages, offset/PAGE_SIZE);
2728 *Physical = page_to_phys(Mdl->u.contiguousPages) + offset;
2731 return gcvSTATUS_OK;
2735 /* Address not yet found. */
2736 return gcvSTATUS_INVALID_ADDRESS;
2739 /*******************************************************************************
2741 ** gckOS_GetPhysicalAddressProcess
2743 ** Get the physical system address of a corresponding virtual address for a
2749 ** Pointer to gckOS object.
2751 ** gctPOINTER Logical
2754 ** gctUINT32 ProcessID
2759 ** gctUINT32 * Address
2760 ** Poinetr to a variable that receives the 32-bit physical adress.
2763 gckOS_GetPhysicalAddressProcess(
2765 IN gctPOINTER Logical,
2766 IN gctUINT32 ProcessID,
2767 OUT gctUINT32 * Address
2772 gceSTATUS status = gcvSTATUS_INVALID_ADDRESS;
2774 gcmkHEADER_ARG("Os=0x%X Logical=0x%X ProcessID=%d", Os, Logical, ProcessID);
2776 /* Verify the arguments. */
2777 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
2778 gcmkVERIFY_ARGUMENT(Address != gcvNULL);
2782 /* First try the contiguous memory pool. */
2783 if (Os->device->contiguousMapped)
2785 base = (gctINT8_PTR) Os->device->contiguousBase;
2787 if (((gctINT8_PTR) Logical >= base)
2788 && ((gctINT8_PTR) Logical < base + Os->device->contiguousSize)
2791 /* Convert logical address into physical. */
2792 *Address = Os->device->contiguousVidMem->baseAddress
2793 + (gctINT8_PTR) Logical - base;
2794 status = gcvSTATUS_OK;
2799 /* Try the contiguous memory pool. */
2800 mdl = (PLINUX_MDL) Os->device->contiguousPhysical;
2801 status = _ConvertLogical2Physical(Os,
2808 if (gcmIS_ERROR(status))
2810 /* Walk all MDLs. */
2811 for (mdl = Os->mdlHead; mdl != gcvNULL; mdl = mdl->next)
2814 status = _ConvertLogical2Physical(Os,
2819 if (gcmIS_SUCCESS(status))
2828 gcmkONERROR(status);
2831 gcmkFOOTER_ARG("*Address=0x%08x", *Address);
2832 return gcvSTATUS_OK;
2835 /* Return the status. */
2840 /*******************************************************************************
2842 ** gckOS_MapPhysical
2844 ** Map a physical address into kernel space.
2849 ** Pointer to an gckOS object.
2851 ** gctUINT32 Physical
2852 ** Physical address of the memory to map.
2855 ** Number of bytes to map.
2859 ** gctPOINTER * Logical
2860 ** Pointer to a variable that receives the base address of the mapped
2866 IN gctUINT32 Physical,
2868 OUT gctPOINTER * Logical
2873 gctUINT32 physical = Physical;
2875 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Bytes=%lu", Os, Physical, Bytes);
2877 /* Verify the arguments. */
2878 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
2879 gcmkVERIFY_ARGUMENT(Bytes > 0);
2880 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
2884 /* Go through our mapping to see if we know this physical address already. */
2887 while (mdl != gcvNULL)
2889 if (mdl->dmaHandle != 0)
2891 if ((physical >= mdl->dmaHandle)
2892 && (physical < mdl->dmaHandle + mdl->numPages * PAGE_SIZE)
2895 *Logical = mdl->addr + (physical - mdl->dmaHandle);
2905 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
2906 struct contiguous_mem_pool *pool = Os->device->pool;
2908 if (Physical >= pool->phys && Physical < pool->phys + pool->size)
2909 logical = (gctPOINTER)(Physical - pool->phys + pool->virt);
2913 /* Map memory as cached memory. */
2914 request_mem_region(physical, Bytes, "MapRegion");
2915 logical = (gctPOINTER) ioremap_nocache(physical, Bytes);
2918 if (logical == gcvNULL)
2921 gcvLEVEL_INFO, gcvZONE_OS,
2922 "%s(%d): Failed to map physical address 0x%08x",
2923 __FUNCTION__, __LINE__, Physical
2928 /* Out of resources. */
2929 gcmkFOOTER_ARG("status=%d", gcvSTATUS_OUT_OF_RESOURCES);
2930 return gcvSTATUS_OUT_OF_RESOURCES;
2933 /* Return pointer to mapped memory. */
2940 gcmkFOOTER_ARG("*Logical=0x%X", *Logical);
2941 return gcvSTATUS_OK;
2944 /*******************************************************************************
2946 ** gckOS_UnmapPhysical
2948 ** Unmap a previously mapped memory region from kernel memory.
2953 ** Pointer to an gckOS object.
2955 ** gctPOINTER Logical
2956 ** Pointer to the base address of the memory to unmap.
2959 ** Number of bytes to unmap.
2966 gckOS_UnmapPhysical(
2968 IN gctPOINTER Logical,
2974 gcmkHEADER_ARG("Os=0x%X Logical=0x%X Bytes=%lu", Os, Logical, Bytes);
2976 /* Verify the arguments. */
2977 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
2978 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
2979 gcmkVERIFY_ARGUMENT(Bytes > 0);
2985 while (mdl != gcvNULL)
2987 if (mdl->addr != gcvNULL)
2989 if (Logical >= (gctPOINTER)mdl->addr
2990 && Logical < (gctPOINTER)((gctSTRING)mdl->addr + mdl->numPages * PAGE_SIZE))
3001 /* Unmap the memory. */
3009 return gcvSTATUS_OK;
3012 /*******************************************************************************
3014 ** gckOS_CreateMutex
3016 ** Create a new mutex.
3021 ** Pointer to an gckOS object.
3025 ** gctPOINTER * Mutex
3026 ** Pointer to a variable that will hold a pointer to the mutex.
3031 OUT gctPOINTER * Mutex
3036 gcmkHEADER_ARG("Os=0x%X", Os);
3038 /* Validate the arguments. */
3039 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3040 gcmkVERIFY_ARGUMENT(Mutex != gcvNULL);
3042 /* Allocate the mutex structure. */
3043 gcmkONERROR(gckOS_Allocate(Os, gcmSIZEOF(struct mutex), Mutex));
3045 /* Initialize the mutex. */
3048 /* Return status. */
3049 gcmkFOOTER_ARG("*Mutex=0x%X", *Mutex);
3050 return gcvSTATUS_OK;
3053 /* Return status. */
3058 /*******************************************************************************
3060 ** gckOS_DeleteMutex
3067 ** Pointer to an gckOS object.
3070 ** Pointer to the mute to be deleted.
3084 gcmkHEADER_ARG("Os=0x%X Mutex=0x%X", Os, Mutex);
3086 /* Validate the arguments. */
3087 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3088 gcmkVERIFY_ARGUMENT(Mutex != gcvNULL);
3090 /* Destroy the mutex. */
3091 mutex_destroy(Mutex);
3093 /* Free the mutex structure. */
3094 gcmkONERROR(gckOS_Free(Os, Mutex));
3097 return gcvSTATUS_OK;
3100 /* Return status. */
3105 /*******************************************************************************
3107 ** gckOS_AcquireMutex
3114 ** Pointer to an gckOS object.
3117 ** Pointer to the mutex to be acquired.
3119 ** gctUINT32 Timeout
3120 ** Timeout value specified in milliseconds.
3121 ** Specify the value of gcvINFINITE to keep the thread suspended
3122 ** until the mutex has been acquired.
3131 IN gctPOINTER Mutex,
3132 IN gctUINT32 Timeout
3135 #if gcdDETECT_TIMEOUT
3139 gcmkHEADER_ARG("Os=0x%X Mutex=0x%0x Timeout=%u", Os, Mutex, Timeout);
3141 /* Validate the arguments. */
3142 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3143 gcmkVERIFY_ARGUMENT(Mutex != gcvNULL);
3145 #if gcdDETECT_TIMEOUT
3150 /* Try to acquire the mutex. */
3151 if (mutex_trylock(Mutex))
3155 return gcvSTATUS_OK;
3158 /* Advance the timeout. */
3161 if (Timeout == gcvINFINITE)
3163 if (timeout == gcdINFINITE_TIMEOUT)
3165 gctUINT32 dmaAddress1, dmaAddress2;
3166 gctUINT32 dmaState1, dmaState2;
3168 dmaState1 = dmaState2 =
3169 dmaAddress1 = dmaAddress2 = 0;
3171 /* Verify whether DMA is running. */
3172 gcmkVERIFY_OK(_VerifyDMA(
3173 Os, &dmaAddress1, &dmaAddress2, &dmaState1, &dmaState2
3176 #if gcdDETECT_DMA_ADDRESS
3177 /* Dump only if DMA appears stuck. */
3179 (dmaAddress1 == dmaAddress2)
3180 #if gcdDETECT_DMA_STATE
3181 && (dmaState1 == dmaState2)
3186 gcmkVERIFY_OK(_DumpGPUState(Os, gcvCORE_MAJOR));
3189 "%s(%d): mutex 0x%X; forced message flush.",
3190 __FUNCTION__, __LINE__, Mutex
3193 /* Flush the debug cache. */
3194 gcmkDEBUGFLUSH(dmaAddress2);
3203 if (timeout >= Timeout)
3209 /* Wait for 1 millisecond. */
3210 gcmkVERIFY_OK(gckOS_Delay(Os, 1));
3213 if (Timeout == gcvINFINITE)
3215 /* Lock the mutex. */
3220 return gcvSTATUS_OK;
3225 /* Try to acquire the mutex. */
3226 if (mutex_trylock(Mutex))
3230 return gcvSTATUS_OK;
3238 /* Wait for 1 millisecond. */
3239 gcmkVERIFY_OK(gckOS_Delay(Os, 1));
3244 gcmkFOOTER_ARG("status=%d", gcvSTATUS_TIMEOUT);
3245 return gcvSTATUS_TIMEOUT;
3248 /*******************************************************************************
3250 ** gckOS_ReleaseMutex
3252 ** Release an acquired mutex.
3257 ** Pointer to an gckOS object.
3260 ** Pointer to the mutex to be released.
3272 gcmkHEADER_ARG("Os=0x%X Mutex=0x%0x", Os, Mutex);
3274 /* Validate the arguments. */
3275 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3276 gcmkVERIFY_ARGUMENT(Mutex != gcvNULL);
3278 /* Release the mutex. */
3279 mutex_unlock(Mutex);
3283 return gcvSTATUS_OK;
3286 /*******************************************************************************
3288 ** gckOS_AtomicExchange
3290 ** Atomically exchange a pair of 32-bit values.
3295 ** Pointer to an gckOS object.
3297 ** IN OUT gctINT32_PTR Target
3298 ** Pointer to the 32-bit value to exchange.
3300 ** IN gctINT32 NewValue
3301 ** Specifies a new value for the 32-bit value pointed to by Target.
3303 ** OUT gctINT32_PTR OldValue
3304 ** The old value of the 32-bit value pointed to by Target.
3311 gckOS_AtomicExchange(
3313 IN OUT gctUINT32_PTR Target,
3314 IN gctUINT32 NewValue,
3315 OUT gctUINT32_PTR OldValue
3318 gcmkHEADER_ARG("Os=0x%X Target=0x%X NewValue=%u", Os, Target, NewValue);
3320 /* Verify the arguments. */
3321 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3323 /* Exchange the pair of 32-bit values. */
3324 *OldValue = (gctUINT32) atomic_xchg((atomic_t *) Target, (int) NewValue);
3327 gcmkFOOTER_ARG("*OldValue=%u", *OldValue);
3328 return gcvSTATUS_OK;
3331 /*******************************************************************************
3333 ** gckOS_AtomicExchangePtr
3335 ** Atomically exchange a pair of pointers.
3340 ** Pointer to an gckOS object.
3342 ** IN OUT gctPOINTER * Target
3343 ** Pointer to the 32-bit value to exchange.
3345 ** IN gctPOINTER NewValue
3346 ** Specifies a new value for the pointer pointed to by Target.
3348 ** OUT gctPOINTER * OldValue
3349 ** The old value of the pointer pointed to by Target.
3356 gckOS_AtomicExchangePtr(
3358 IN OUT gctPOINTER * Target,
3359 IN gctPOINTER NewValue,
3360 OUT gctPOINTER * OldValue
3363 gcmkHEADER_ARG("Os=0x%X Target=0x%X NewValue=0x%X", Os, Target, NewValue);
3365 /* Verify the arguments. */
3366 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3368 /* Exchange the pair of pointers. */
3369 *OldValue = (gctPOINTER)(gctUINTPTR_T) atomic_xchg((atomic_t *) Target, (int)(gctUINTPTR_T) NewValue);
3372 gcmkFOOTER_ARG("*OldValue=0x%X", *OldValue);
3373 return gcvSTATUS_OK;
3377 /*******************************************************************************
3379 ** gckOS_AtomicSetMask
3381 ** Atomically set mask to Atom
3384 ** IN OUT gctPOINTER Atom
3385 ** Pointer to the atom to set.
3387 ** IN gctUINT32 Mask
3400 gctUINT32 oval, nval;
3402 gcmkHEADER_ARG("Atom=0x%0x", Atom);
3403 gcmkVERIFY_ARGUMENT(Atom != gcvNULL);
3407 oval = atomic_read((atomic_t *) Atom);
3409 } while (atomic_cmpxchg((atomic_t *) Atom, oval, nval) != oval);
3412 return gcvSTATUS_OK;
3415 /*******************************************************************************
3417 ** gckOS_AtomClearMask
3419 ** Atomically clear mask from Atom
3422 ** IN OUT gctPOINTER Atom
3423 ** Pointer to the atom to clear.
3425 ** IN gctUINT32 Mask
3433 gckOS_AtomClearMask(
3438 gctUINT32 oval, nval;
3440 gcmkHEADER_ARG("Atom=0x%0x", Atom);
3441 gcmkVERIFY_ARGUMENT(Atom != gcvNULL);
3445 oval = atomic_read((atomic_t *) Atom);
3446 nval = oval & ~Mask;
3447 } while (atomic_cmpxchg((atomic_t *) Atom, oval, nval) != oval);
3450 return gcvSTATUS_OK;
3454 /*******************************************************************************
3456 ** gckOS_AtomConstruct
3463 ** Pointer to a gckOS object.
3467 ** gctPOINTER * Atom
3468 ** Pointer to a variable receiving the constructed atom.
3471 gckOS_AtomConstruct(
3473 OUT gctPOINTER * Atom
3478 gcmkHEADER_ARG("Os=0x%X", Os);
3480 /* Verify the arguments. */
3481 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3482 gcmkVERIFY_ARGUMENT(Atom != gcvNULL);
3484 /* Allocate the atom. */
3485 gcmkONERROR(gckOS_Allocate(Os, gcmSIZEOF(atomic_t), Atom));
3487 /* Initialize the atom. */
3488 atomic_set((atomic_t *) *Atom, 0);
3491 gcmkFOOTER_ARG("*Atom=0x%X", *Atom);
3492 return gcvSTATUS_OK;
3495 /* Return the status. */
3500 /*******************************************************************************
3502 ** gckOS_AtomDestroy
3509 ** Pointer to a gckOS object.
3512 ** Pointer to the atom to destroy.
3526 gcmkHEADER_ARG("Os=0x%X Atom=0x%0x", Os, Atom);
3528 /* Verify the arguments. */
3529 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3530 gcmkVERIFY_ARGUMENT(Atom != gcvNULL);
3532 /* Free the atom. */
3533 gcmkONERROR(gcmkOS_SAFE_FREE(Os, Atom));
3537 return gcvSTATUS_OK;
3540 /* Return the status. */
3545 /*******************************************************************************
3549 ** Get the 32-bit value protected by an atom.
3554 ** Pointer to a gckOS object.
3557 ** Pointer to the atom.
3561 ** gctINT32_PTR Value
3562 ** Pointer to a variable the receives the value of the atom.
3568 OUT gctINT32_PTR Value
3571 gcmkHEADER_ARG("Os=0x%X Atom=0x%0x", Os, Atom);
3573 /* Verify the arguments. */
3574 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3575 gcmkVERIFY_ARGUMENT(Atom != gcvNULL);
3577 /* Return the current value of atom. */
3578 *Value = atomic_read((atomic_t *) Atom);
3581 gcmkFOOTER_ARG("*Value=%d", *Value);
3582 return gcvSTATUS_OK;
3585 /*******************************************************************************
3589 ** Set the 32-bit value protected by an atom.
3594 ** Pointer to a gckOS object.
3597 ** Pointer to the atom.
3600 ** The value of the atom.
3613 gcmkHEADER_ARG("Os=0x%X Atom=0x%0x Value=%d", Os, Atom);
3615 /* Verify the arguments. */
3616 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3617 gcmkVERIFY_ARGUMENT(Atom != gcvNULL);
3619 /* Set the current value of atom. */
3620 atomic_set((atomic_t *) Atom, Value);
3624 return gcvSTATUS_OK;
3627 /*******************************************************************************
3629 ** gckOS_AtomIncrement
3631 ** Atomically increment the 32-bit integer value inside an atom.
3636 ** Pointer to a gckOS object.
3639 ** Pointer to the atom.
3643 ** gctINT32_PTR Value
3644 ** Pointer to a variable that receives the original value of the atom.
3647 gckOS_AtomIncrement(
3650 OUT gctINT32_PTR Value
3653 gcmkHEADER_ARG("Os=0x%X Atom=0x%0x", Os, Atom);
3655 /* Verify the arguments. */
3656 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3657 gcmkVERIFY_ARGUMENT(Atom != gcvNULL);
3659 /* Increment the atom. */
3660 *Value = atomic_inc_return((atomic_t *) Atom) - 1;
3663 gcmkFOOTER_ARG("*Value=%d", *Value);
3664 return gcvSTATUS_OK;
3667 /*******************************************************************************
3669 ** gckOS_AtomDecrement
3671 ** Atomically decrement the 32-bit integer value inside an atom.
3676 ** Pointer to a gckOS object.
3679 ** Pointer to the atom.
3683 ** gctINT32_PTR Value
3684 ** Pointer to a variable that receives the original value of the atom.
3687 gckOS_AtomDecrement(
3690 OUT gctINT32_PTR Value
3693 gcmkHEADER_ARG("Os=0x%X Atom=0x%0x", Os, Atom);
3695 /* Verify the arguments. */
3696 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3697 gcmkVERIFY_ARGUMENT(Atom != gcvNULL);
3699 /* Decrement the atom. */
3700 *Value = atomic_dec_return((atomic_t *) Atom) + 1;
3703 gcmkFOOTER_ARG("*Value=%d", *Value);
3704 return gcvSTATUS_OK;
3707 /*******************************************************************************
3711 ** Delay execution of the current thread for a number of milliseconds.
3716 ** Pointer to an gckOS object.
3719 ** Delay to sleep, specified in milliseconds.
3731 gcmkHEADER_ARG("Os=0x%X Delay=%u", Os, Delay);
3735 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28)
3736 ktime_t delay = ktime_set(Delay/1000, (Delay%1000) * NSEC_PER_MSEC);
3737 __set_current_state(TASK_UNINTERRUPTIBLE);
3738 schedule_hrtimeout(&delay, HRTIMER_MODE_REL);
3747 return gcvSTATUS_OK;
3750 /*******************************************************************************
3754 ** Get the number of milliseconds since the system started.
3760 ** gctUINT32_PTR Time
3761 ** Pointer to a variable to get time.
3766 OUT gctUINT32_PTR Time
3771 *Time = jiffies_to_msecs(jiffies);
3774 return gcvSTATUS_OK;
3777 /*******************************************************************************
3781 ** Compare time values got from gckOS_GetTicks.
3785 ** First time value to be compared.
3788 ** Second time value to be compared.
3792 ** gctBOOL_PTR IsAfter
3793 ** Pointer to a variable to result.
3800 OUT gctBOOL_PTR IsAfter
3805 *IsAfter = time_after((unsigned long)Time1, (unsigned long)Time2);
3808 return gcvSTATUS_OK;
3811 /*******************************************************************************
3815 ** Get the number of microseconds since the system started.
3821 ** gctUINT64_PTR Time
3822 ** Pointer to a variable to get time.
3827 OUT gctUINT64_PTR Time
3835 return gcvSTATUS_OK;
3838 /*******************************************************************************
3840 ** gckOS_MemoryBarrier
3842 ** Make sure the CPU has executed everything up to this point and the data got
3843 ** written to the specified pointer.
3848 ** Pointer to an gckOS object.
3850 ** gctPOINTER Address
3851 ** Address of memory that needs to be barriered.
3858 gckOS_MemoryBarrier(
3860 IN gctPOINTER Address
3863 gcmkHEADER_ARG("Os=0x%X Address=0x%X", Os, Address);
3865 /* Verify the arguments. */
3866 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3868 #if gcdNONPAGED_MEMORY_BUFFERABLE \
3869 && defined (CONFIG_ARM) \
3870 && (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,34))
3871 /* drain write buffer */
3874 /* drain outer cache's write buffer? */
3881 return gcvSTATUS_OK;
3884 /*******************************************************************************
3886 ** gckOS_AllocatePagedMemory
3888 ** Allocate memory from the paged pool.
3893 ** Pointer to an gckOS object.
3896 ** Number of bytes to allocate.
3900 ** gctPHYS_ADDR * Physical
3901 ** Pointer to a variable that receives the physical address of the
3902 ** memory allocation.
3905 gckOS_AllocatePagedMemory(
3908 OUT gctPHYS_ADDR * Physical
3913 gcmkHEADER_ARG("Os=0x%X Bytes=%lu", Os, Bytes);
3915 /* Verify the arguments. */
3916 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3917 gcmkVERIFY_ARGUMENT(Bytes > 0);
3918 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
3920 /* Allocate the memory. */
3921 gcmkONERROR(gckOS_AllocatePagedMemoryEx(Os, gcvFALSE, Bytes, Physical));
3924 gcmkFOOTER_ARG("*Physical=0x%X", *Physical);
3925 return gcvSTATUS_OK;
3928 /* Return the status. */
3933 /*******************************************************************************
3935 ** gckOS_AllocatePagedMemoryEx
3937 ** Allocate memory from the paged pool.
3942 ** Pointer to an gckOS object.
3944 ** gctBOOL Contiguous
3945 ** Need contiguous memory or not.
3948 ** Number of bytes to allocate.
3952 ** gctPHYS_ADDR * Physical
3953 ** Pointer to a variable that receives the physical address of the
3954 ** memory allocation.
3957 gckOS_AllocatePagedMemoryEx(
3959 IN gctBOOL Contiguous,
3961 OUT gctPHYS_ADDR * Physical
3966 PLINUX_MDL mdl = gcvNULL;
3968 gctBOOL locked = gcvFALSE;
3970 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
3971 gctPOINTER addr = gcvNULL;
3974 gcmkHEADER_ARG("Os=0x%X Contiguous=%d Bytes=%lu", Os, Contiguous, Bytes);
3976 /* Verify the arguments. */
3977 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
3978 gcmkVERIFY_ARGUMENT(Bytes > 0);
3979 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
3981 bytes = gcmALIGN(Bytes, PAGE_SIZE);
3983 numPages = GetPageCount(bytes, 0);
3988 mdl = _CreateMdl(_GetProcessID());
3991 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
3996 gctUINT32 order = get_order(bytes);
3998 if (order >= MAX_ORDER)
4000 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
4003 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
4005 alloc_pages_exact(numPages * PAGE_SIZE, GFP_KERNEL | gcdNOWARN | __GFP_NORETRY);
4007 mdl->u.contiguousPages = addr
4008 ? virt_to_page(addr)
4011 mdl->exact = gcvTRUE;
4013 mdl->u.contiguousPages =
4014 alloc_pages(GFP_KERNEL | gcdNOWARN | __GFP_NORETRY, order);
4016 if (mdl->u.contiguousPages == gcvNULL)
4018 mdl->u.contiguousPages =
4019 alloc_pages(GFP_KERNEL | __GFP_HIGHMEM | gcdNOWARN, order);
4021 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
4022 mdl->exact = gcvFALSE;
4028 mdl->u.nonContiguousPages = _NonContiguousAlloc(numPages);
4031 if (mdl->u.contiguousPages == gcvNULL && mdl->u.nonContiguousPages == gcvNULL)
4033 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
4038 mdl->numPages = numPages;
4040 mdl->contiguous = Contiguous;
4042 for (i = 0; i < mdl->numPages; i++)
4046 if (mdl->contiguous)
4048 page = nth_page(mdl->u.contiguousPages, i);
4052 page = _NonContiguousToPage(mdl->u.nonContiguousPages, i);
4055 SetPageReserved(page);
4057 if (!PageHighMem(page) && page_to_phys(page))
4060 gckOS_CacheFlush(Os, _GetProcessID(), gcvNULL,
4061 (gctPOINTER)(gctUINTPTR_T)page_to_phys(page),
4067 /* Return physical address. */
4068 *Physical = (gctPHYS_ADDR) mdl;
4071 * Add this to a global list.
4072 * Will be used by get physical address
4073 * and mapuser pointer functions.
4077 /* Initialize the queue. */
4078 Os->mdlHead = Os->mdlTail = mdl;
4083 mdl->prev = Os->mdlTail;
4084 Os->mdlTail->next = mdl;
4091 gcmkFOOTER_ARG("*Physical=0x%X", *Physical);
4092 return gcvSTATUS_OK;
4097 /* Free the memory. */
4103 /* Unlock the memory. */
4107 /* Return the status. */
4112 /*******************************************************************************
4114 ** gckOS_FreePagedMemory
4116 ** Free memory allocated from the paged pool.
4121 ** Pointer to an gckOS object.
4123 ** gctPHYS_ADDR Physical
4124 ** Physical address of the allocation.
4127 ** Number of bytes of the allocation.
4134 gckOS_FreePagedMemory(
4136 IN gctPHYS_ADDR Physical,
4140 PLINUX_MDL mdl = (PLINUX_MDL) Physical;
4143 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Bytes=%lu", Os, Physical, Bytes);
4145 /* Verify the arguments. */
4146 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
4147 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
4148 gcmkVERIFY_ARGUMENT(Bytes > 0);
4150 /*addr = mdl->addr;*/
4154 for (i = 0; i < mdl->numPages; i++)
4156 if (mdl->contiguous)
4158 ClearPageReserved(nth_page(mdl->u.contiguousPages, i));
4162 ClearPageReserved(_NonContiguousToPage(mdl->u.nonContiguousPages, i));
4166 if (mdl->contiguous)
4168 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
4169 if (mdl->exact == gcvTRUE)
4171 free_pages_exact(page_address(mdl->u.contiguousPages), mdl->numPages * PAGE_SIZE);
4176 __free_pages(mdl->u.contiguousPages, GetOrder(mdl->numPages));
4181 _NonContiguousFree(mdl->u.nonContiguousPages, mdl->numPages);
4184 /* Remove the node from global list. */
4185 if (mdl == Os->mdlHead)
4187 if ((Os->mdlHead = mdl->next) == gcvNULL)
4189 Os->mdlTail = gcvNULL;
4194 mdl->prev->next = mdl->next;
4196 if (mdl == Os->mdlTail)
4198 Os->mdlTail = mdl->prev;
4202 mdl->next->prev = mdl->prev;
4208 /* Free the structure... */
4209 gcmkVERIFY_OK(_DestroyMdl(mdl));
4213 return gcvSTATUS_OK;
4216 /*******************************************************************************
4220 ** Lock memory allocated from the paged pool.
4225 ** Pointer to an gckOS object.
4227 ** gctPHYS_ADDR Physical
4228 ** Physical address of the allocation.
4231 ** Number of bytes of the allocation.
4233 ** gctBOOL Cacheable
4234 ** Cache mode of mapping.
4238 ** gctPOINTER * Logical
4239 ** Pointer to a variable that receives the address of the mapped
4242 ** gctSIZE_T * PageCount
4243 ** Pointer to a variable that receives the number of pages required for
4244 ** the page table according to the GPU page size.
4249 IN gctPHYS_ADDR Physical,
4251 IN gctBOOL Cacheable,
4252 OUT gctPOINTER * Logical,
4253 OUT gctSIZE_T * PageCount
4257 PLINUX_MDL_MAP mdlMap;
4259 unsigned long start;
4263 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Bytes=%lu", Os, Physical, Logical);
4265 /* Verify the arguments. */
4266 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
4267 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
4268 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
4269 gcmkVERIFY_ARGUMENT(PageCount != gcvNULL);
4271 mdl = (PLINUX_MDL) Physical;
4275 mdlMap = FindMdlMap(mdl, _GetProcessID());
4277 if (mdlMap == gcvNULL)
4279 mdlMap = _CreateMdlMap(mdl, _GetProcessID());
4281 if (mdlMap == gcvNULL)
4285 gcmkFOOTER_ARG("*status=%d", gcvSTATUS_OUT_OF_MEMORY);
4286 return gcvSTATUS_OUT_OF_MEMORY;
4290 if (mdlMap->vmaAddr == gcvNULL)
4292 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0)
4293 mdlMap->vmaAddr = (gctSTRING)vm_mmap(gcvNULL,
4295 mdl->numPages * PAGE_SIZE,
4296 PROT_READ | PROT_WRITE,
4300 down_write(¤t->mm->mmap_sem);
4302 mdlMap->vmaAddr = (gctSTRING)do_mmap_pgoff(gcvNULL,
4304 mdl->numPages * PAGE_SIZE,
4305 PROT_READ | PROT_WRITE,
4309 up_write(¤t->mm->mmap_sem);
4313 gcvLEVEL_INFO, gcvZONE_OS,
4314 "%s(%d): vmaAddr->0x%X for phys_addr->0x%X",
4315 __FUNCTION__, __LINE__,
4316 (gctUINT32)(gctUINTPTR_T)mdlMap->vmaAddr,
4317 (gctUINT32)(gctUINTPTR_T)mdl
4320 if (IS_ERR(mdlMap->vmaAddr))
4323 gcvLEVEL_INFO, gcvZONE_OS,
4324 "%s(%d): do_mmap_pgoff error",
4325 __FUNCTION__, __LINE__
4328 mdlMap->vmaAddr = gcvNULL;
4332 gcmkFOOTER_ARG("*status=%d", gcvSTATUS_OUT_OF_MEMORY);
4333 return gcvSTATUS_OUT_OF_MEMORY;
4336 down_write(¤t->mm->mmap_sem);
4338 mdlMap->vma = find_vma(current->mm, (unsigned long)mdlMap->vmaAddr);
4340 if (mdlMap->vma == gcvNULL)
4342 up_write(¤t->mm->mmap_sem);
4345 gcvLEVEL_INFO, gcvZONE_OS,
4346 "%s(%d): find_vma error",
4347 __FUNCTION__, __LINE__
4350 mdlMap->vmaAddr = gcvNULL;
4354 gcmkFOOTER_ARG("*status=%d", gcvSTATUS_OUT_OF_RESOURCES);
4355 return gcvSTATUS_OUT_OF_RESOURCES;
4358 mdlMap->vma->vm_flags |= gcdVM_FLAGS;
4360 if (Cacheable == gcvFALSE)
4362 /* Make this mapping non-cached. */
4363 mdlMap->vma->vm_page_prot = gcmkPAGED_MEMROY_PROT(mdlMap->vma->vm_page_prot);
4368 /* Now map all the vmalloc pages to this user address. */
4369 if (mdl->contiguous)
4371 /* map kernel memory to user space.. */
4372 if (remap_pfn_range(mdlMap->vma,
4373 mdlMap->vma->vm_start,
4374 page_to_pfn(mdl->u.contiguousPages),
4375 mdlMap->vma->vm_end - mdlMap->vma->vm_start,
4376 mdlMap->vma->vm_page_prot) < 0)
4378 up_write(¤t->mm->mmap_sem);
4381 gcvLEVEL_INFO, gcvZONE_OS,
4382 "%s(%d): unable to mmap ret",
4383 __FUNCTION__, __LINE__
4386 mdlMap->vmaAddr = gcvNULL;
4390 gcmkFOOTER_ARG("*status=%d", gcvSTATUS_OUT_OF_MEMORY);
4391 return gcvSTATUS_OUT_OF_MEMORY;
4396 start = mdlMap->vma->vm_start;
4398 for (i = 0; i < mdl->numPages; i++)
4400 pfn = _NonContiguousToPfn(mdl->u.nonContiguousPages, i);
4402 if (remap_pfn_range(mdlMap->vma,
4406 mdlMap->vma->vm_page_prot) < 0)
4408 up_write(¤t->mm->mmap_sem);
4411 gcvLEVEL_INFO, gcvZONE_OS,
4412 "%s(%d): gctPHYS_ADDR->0x%X Logical->0x%X Unable to map addr->0x%X to start->0x%X",
4413 __FUNCTION__, __LINE__,
4414 (gctUINT32)(gctUINTPTR_T)Physical,
4415 (gctUINT32)(gctUINTPTR_T)*Logical,
4416 (gctUINT32)(gctUINTPTR_T)addr,
4417 (gctUINT32)(gctUINTPTR_T)start
4420 mdlMap->vmaAddr = gcvNULL;
4424 gcmkFOOTER_ARG("*status=%d", gcvSTATUS_OUT_OF_MEMORY);
4425 return gcvSTATUS_OUT_OF_MEMORY;
4433 up_write(¤t->mm->mmap_sem);
4439 /* mdlMap->vmaAddr != gcvNULL means current process has already locked this node. */
4442 gcmkFOOTER_ARG("*status=%d, mdlMap->vmaAddr=%x", gcvSTATUS_MEMORY_LOCKED, mdlMap->vmaAddr);
4443 return gcvSTATUS_MEMORY_LOCKED;
4447 /* Convert pointer to MDL. */
4448 *Logical = mdlMap->vmaAddr;
4450 /* Return the page number according to the GPU page size. */
4451 gcmkASSERT((PAGE_SIZE % 4096) == 0);
4452 gcmkASSERT((PAGE_SIZE / 4096) >= 1);
4454 *PageCount = mdl->numPages * (PAGE_SIZE / 4096);
4456 /* Increase reference count. */
4457 mdlMap->reference++;
4461 gcmkVERIFY_OK(gckOS_CacheFlush(
4466 (gctPOINTER)mdlMap->vmaAddr,
4467 mdl->numPages * PAGE_SIZE
4471 gcmkFOOTER_ARG("*Logical=0x%X *PageCount=%lu", *Logical, *PageCount);
4472 return gcvSTATUS_OK;
4475 /*******************************************************************************
4479 ** Map paged memory into a page table.
4484 ** Pointer to an gckOS object.
4486 ** gctPHYS_ADDR Physical
4487 ** Physical address of the allocation.
4489 ** gctSIZE_T PageCount
4490 ** Number of pages required for the physical address.
4492 ** gctPOINTER PageTable
4493 ** Pointer to the page table to fill in.
4502 IN gctPHYS_ADDR Physical,
4503 IN gctSIZE_T PageCount,
4504 IN gctPOINTER PageTable
4507 return gckOS_MapPagesEx(Os,
4518 IN gctPHYS_ADDR Physical,
4519 IN gctSIZE_T PageCount,
4520 IN gctPOINTER PageTable
4523 gceSTATUS status = gcvSTATUS_OK;
4527 #if gcdNONPAGED_MEMORY_CACHEABLE
4531 gctPHYS_ADDR pageTablePhysical;
4534 gcmkHEADER_ARG("Os=0x%X Core=%d Physical=0x%X PageCount=%u PageTable=0x%X",
4535 Os, Core, Physical, PageCount, PageTable);
4537 /* Verify the arguments. */
4538 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
4539 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
4540 gcmkVERIFY_ARGUMENT(PageCount > 0);
4541 gcmkVERIFY_ARGUMENT(PageTable != gcvNULL);
4543 /* Convert pointer to MDL. */
4544 mdl = (PLINUX_MDL)Physical;
4547 gcvLEVEL_INFO, gcvZONE_OS,
4548 "%s(%d): Physical->0x%X PageCount->0x%X PagedMemory->?%d",
4549 __FUNCTION__, __LINE__,
4550 (gctUINT32)(gctUINTPTR_T)Physical,
4551 (gctUINT32)(gctUINTPTR_T)PageCount,
4557 table = (gctUINT32 *)PageTable;
4558 #if gcdNONPAGED_MEMORY_CACHEABLE
4559 mmu = Os->device->kernels[Core]->mmu;
4560 bytes = PageCount * sizeof(*table);
4561 mmuMdl = (PLINUX_MDL)mmu->pageTablePhysical;
4564 /* Get all the physical addresses and store them in the page table. */
4570 /* Try to get the user pages so DMA can happen. */
4571 while (PageCount-- > 0)
4574 if (Core == gcvCORE_VG)
4576 if (mdl->contiguous)
4579 gckVGMMU_SetPage(Os->device->kernels[Core]->vg->mmu,
4580 page_to_phys(nth_page(mdl->u.contiguousPages, offset)),
4586 gckVGMMU_SetPage(Os->device->kernels[Core]->vg->mmu,
4587 _NonContiguousToPhys(mdl->u.nonContiguousPages, offset),
4594 if (mdl->contiguous)
4597 gckMMU_SetPage(Os->device->kernels[Core]->mmu,
4598 page_to_phys(nth_page(mdl->u.contiguousPages, offset)),
4604 gckMMU_SetPage(Os->device->kernels[Core]->mmu,
4605 _NonContiguousToPhys(mdl->u.nonContiguousPages, offset),
4617 gcvLEVEL_INFO, gcvZONE_OS,
4618 "%s(%d): we should not get this call for Non Paged Memory!",
4619 __FUNCTION__, __LINE__
4622 while (PageCount-- > 0)
4625 if (Core == gcvCORE_VG)
4628 gckVGMMU_SetPage(Os->device->kernels[Core]->vg->mmu,
4629 page_to_phys(nth_page(mdl->u.contiguousPages, offset)),
4636 gckMMU_SetPage(Os->device->kernels[Core]->mmu,
4637 page_to_phys(nth_page(mdl->u.contiguousPages, offset)),
4645 #if gcdNONPAGED_MEMORY_CACHEABLE
4646 /* Get physical address of pageTable */
4647 pageTablePhysical = (gctPHYS_ADDR)(mmuMdl->dmaHandle +
4648 ((gctUINT32 *)PageTable - mmu->pageTableLogical));
4650 /* Flush the mmu page table cache. */
4651 gcmkONERROR(gckOS_CacheClean(
4665 /* Return the status. */
4670 /*******************************************************************************
4672 ** gckOS_UnlockPages
4674 ** Unlock memory allocated from the paged pool.
4679 ** Pointer to an gckOS object.
4681 ** gctPHYS_ADDR Physical
4682 ** Physical address of the allocation.
4685 ** Number of bytes of the allocation.
4687 ** gctPOINTER Logical
4688 ** Address of the mapped memory.
4697 IN gctPHYS_ADDR Physical,
4699 IN gctPOINTER Logical
4702 PLINUX_MDL_MAP mdlMap;
4703 PLINUX_MDL mdl = (PLINUX_MDL)Physical;
4705 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Bytes=%u Logical=0x%X",
4706 Os, Physical, Bytes, Logical);
4708 /* Verify the arguments. */
4709 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
4710 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
4711 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
4713 /* Make sure there is already a mapping...*/
4714 gcmkVERIFY_ARGUMENT(mdl->u.nonContiguousPages != gcvNULL
4715 || mdl->u.contiguousPages != gcvNULL);
4721 while (mdlMap != gcvNULL)
4723 if ((mdlMap->vmaAddr != gcvNULL) && (_GetProcessID() == mdlMap->pid))
4725 if (--mdlMap->reference > 0)
4730 _UnmapUserLogical(mdlMap->pid, mdlMap->vmaAddr, mdl->numPages * PAGE_SIZE);
4731 mdlMap->vmaAddr = gcvNULL;
4734 mdlMap = mdlMap->next;
4741 return gcvSTATUS_OK;
4745 /*******************************************************************************
4747 ** gckOS_AllocateContiguous
4749 ** Allocate memory from the contiguous pool.
4754 ** Pointer to an gckOS object.
4756 ** gctBOOL InUserSpace
4757 ** gcvTRUE if the pages need to be mapped into user space.
4759 ** gctSIZE_T * Bytes
4760 ** Pointer to the number of bytes to allocate.
4764 ** gctSIZE_T * Bytes
4765 ** Pointer to a variable that receives the number of bytes allocated.
4767 ** gctPHYS_ADDR * Physical
4768 ** Pointer to a variable that receives the physical address of the
4769 ** memory allocation.
4771 ** gctPOINTER * Logical
4772 ** Pointer to a variable that receives the logical address of the
4773 ** memory allocation.
4776 gckOS_AllocateContiguous(
4778 IN gctBOOL InUserSpace,
4779 IN OUT gctSIZE_T * Bytes,
4780 OUT gctPHYS_ADDR * Physical,
4781 OUT gctPOINTER * Logical
4786 gcmkHEADER_ARG("Os=0x%X InUserSpace=%d *Bytes=%lu",
4787 Os, InUserSpace, gcmOPT_VALUE(Bytes));
4789 /* Verify the arguments. */
4790 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
4791 gcmkVERIFY_ARGUMENT(Bytes != gcvNULL);
4792 gcmkVERIFY_ARGUMENT(*Bytes > 0);
4793 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
4794 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
4796 /* Same as non-paged memory for now. */
4797 gcmkONERROR(gckOS_AllocateNonPagedMemory(Os,
4804 gcmkFOOTER_ARG("*Bytes=%lu *Physical=0x%X *Logical=0x%X",
4805 *Bytes, *Physical, *Logical);
4806 return gcvSTATUS_OK;
4809 /* Return the status. */
4814 /*******************************************************************************
4816 ** gckOS_FreeContiguous
4818 ** Free memory allocated from the contiguous pool.
4823 ** Pointer to an gckOS object.
4825 ** gctPHYS_ADDR Physical
4826 ** Physical address of the allocation.
4828 ** gctPOINTER Logical
4829 ** Logicval address of the allocation.
4832 ** Number of bytes of the allocation.
4839 gckOS_FreeContiguous(
4841 IN gctPHYS_ADDR Physical,
4842 IN gctPOINTER Logical,
4848 gcmkHEADER_ARG("Os=0x%X Physical=0x%X Logical=0x%X Bytes=%lu",
4849 Os, Physical, Logical, Bytes);
4851 /* Verify the arguments. */
4852 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
4853 gcmkVERIFY_ARGUMENT(Physical != gcvNULL);
4854 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
4855 gcmkVERIFY_ARGUMENT(Bytes > 0);
4857 /* Same of non-paged memory for now. */
4858 gcmkONERROR(gckOS_FreeNonPagedMemory(Os, Bytes, Physical, Logical));
4862 return gcvSTATUS_OK;
4865 /* Return the status. */
4871 /******************************************************************************
4873 ** gckOS_GetKernelLogical
4875 ** Return the kernel logical pointer that corresponods to the specified
4876 ** hardware address.
4881 ** Pointer to an gckOS object.
4883 ** gctUINT32 Address
4884 ** Hardware physical address.
4888 ** gctPOINTER * KernelPointer
4889 ** Pointer to a variable receiving the pointer in kernel address space.
4892 gckOS_GetKernelLogical(
4894 IN gctUINT32 Address,
4895 OUT gctPOINTER * KernelPointer
4898 return gckOS_GetKernelLogicalEx(Os, gcvCORE_MAJOR, Address, KernelPointer);
4902 gckOS_GetKernelLogicalEx(
4905 IN gctUINT32 Address,
4906 OUT gctPOINTER * KernelPointer
4911 gcmkHEADER_ARG("Os=0x%X Core=%d Address=0x%08x", Os, Core, Address);
4915 gckGALDEVICE device;
4921 /* Extract the pointer to the gckGALDEVICE class. */
4922 device = (gckGALDEVICE) Os->device;
4924 /* Kernel shortcut. */
4925 kernel = device->kernels[Core];
4927 if (Core == gcvCORE_VG)
4929 gcmkERR_BREAK(gckVGHARDWARE_SplitMemory(
4930 kernel->vg->hardware, Address, &pool, &offset
4936 /* Split the memory address into a pool type and offset. */
4937 gcmkERR_BREAK(gckHARDWARE_SplitMemory(
4938 kernel->hardware, Address, &pool, &offset
4942 /* Dispatch on pool. */
4945 case gcvPOOL_LOCAL_INTERNAL:
4946 /* Internal memory. */
4947 logical = device->internalLogical;
4950 case gcvPOOL_LOCAL_EXTERNAL:
4951 /* External memory. */
4952 logical = device->externalLogical;
4955 case gcvPOOL_SYSTEM:
4956 /* System memory. */
4957 logical = device->contiguousBase;
4961 /* Invalid memory pool. */
4963 return gcvSTATUS_INVALID_ARGUMENT;
4966 /* Build logical address of specified address. */
4967 * KernelPointer = ((gctUINT8_PTR) logical) + offset;
4970 gcmkFOOTER_ARG("*KernelPointer=0x%X", *KernelPointer);
4971 return gcvSTATUS_OK;
4975 /* Return status. */
4981 /*******************************************************************************
4983 ** gckOS_MapUserPointer
4985 ** Map a pointer from the user process into the kernel address space.
4990 ** Pointer to an gckOS object.
4992 ** gctPOINTER Pointer
4993 ** Pointer in user process space that needs to be mapped.
4996 ** Number of bytes that need to be mapped.
5000 ** gctPOINTER * KernelPointer
5001 ** Pointer to a variable receiving the mapped pointer in kernel address
5005 gckOS_MapUserPointer(
5007 IN gctPOINTER Pointer,
5009 OUT gctPOINTER * KernelPointer
5012 gctPOINTER buf = gcvNULL;
5015 gcmkHEADER_ARG("Os=0x%X Pointer=0x%X Size=%lu", Os, Pointer, Size);
5017 /* Verify the arguments. */
5018 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
5019 gcmkVERIFY_ARGUMENT(Pointer != gcvNULL);
5020 gcmkVERIFY_ARGUMENT(Size > 0);
5021 gcmkVERIFY_ARGUMENT(KernelPointer != gcvNULL);
5023 buf = kmalloc(Size, GFP_KERNEL | gcdNOWARN);
5028 "%s(%d): Failed to allocate memory.",
5029 __FUNCTION__, __LINE__
5032 gcmkFOOTER_ARG("*status=%d", gcvSTATUS_OUT_OF_MEMORY);
5033 return gcvSTATUS_OUT_OF_MEMORY;
5036 len = copy_from_user(buf, Pointer, Size);
5041 "%s(%d): Failed to copy data from user.",
5042 __FUNCTION__, __LINE__
5050 gcmkFOOTER_ARG("*status=%d", gcvSTATUS_GENERIC_IO);
5051 return gcvSTATUS_GENERIC_IO;
5054 *KernelPointer = buf;
5056 gcmkFOOTER_ARG("*KernelPointer=0x%X", *KernelPointer);
5057 return gcvSTATUS_OK;
5060 /*******************************************************************************
5062 ** gckOS_UnmapUserPointer
5064 ** Unmap a user process pointer from the kernel address space.
5069 ** Pointer to an gckOS object.
5071 ** gctPOINTER Pointer
5072 ** Pointer in user process space that needs to be unmapped.
5075 ** Number of bytes that need to be unmapped.
5077 ** gctPOINTER KernelPointer
5078 ** Pointer in kernel address space that needs to be unmapped.
5085 gckOS_UnmapUserPointer(
5087 IN gctPOINTER Pointer,
5089 IN gctPOINTER KernelPointer
5094 gcmkHEADER_ARG("Os=0x%X Pointer=0x%X Size=%lu KernelPointer=0x%X",
5095 Os, Pointer, Size, KernelPointer);
5098 /* Verify the arguments. */
5099 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
5100 gcmkVERIFY_ARGUMENT(Pointer != gcvNULL);
5101 gcmkVERIFY_ARGUMENT(Size > 0);
5102 gcmkVERIFY_ARGUMENT(KernelPointer != gcvNULL);
5104 len = copy_to_user(Pointer, KernelPointer, Size);
5106 kfree(KernelPointer);
5112 "%s(%d): Failed to copy data to user.",
5113 __FUNCTION__, __LINE__
5116 gcmkFOOTER_ARG("status=%d", gcvSTATUS_GENERIC_IO);
5117 return gcvSTATUS_GENERIC_IO;
5121 return gcvSTATUS_OK;
5124 /*******************************************************************************
5126 ** gckOS_QueryNeedCopy
5128 ** Query whether the memory can be accessed or mapped directly or it has to be
5134 ** Pointer to an gckOS object.
5136 ** gctUINT32 ProcessID
5137 ** Process ID of the current process.
5141 ** gctBOOL_PTR NeedCopy
5142 ** Pointer to a boolean receiving gcvTRUE if the memory needs a copy or
5143 ** gcvFALSE if the memory can be accessed or mapped dircetly.
5146 gckOS_QueryNeedCopy(
5148 IN gctUINT32 ProcessID,
5149 OUT gctBOOL_PTR NeedCopy
5152 gcmkHEADER_ARG("Os=0x%X ProcessID=%d", Os, ProcessID);
5154 /* Verify the arguments. */
5155 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
5156 gcmkVERIFY_ARGUMENT(NeedCopy != gcvNULL);
5158 /* We need to copy data. */
5159 *NeedCopy = gcvTRUE;
5162 gcmkFOOTER_ARG("*NeedCopy=%d", *NeedCopy);
5163 return gcvSTATUS_OK;
5166 /*******************************************************************************
5168 ** gckOS_CopyFromUserData
5170 ** Copy data from user to kernel memory.
5175 ** Pointer to an gckOS object.
5177 ** gctPOINTER KernelPointer
5178 ** Pointer to kernel memory.
5180 ** gctPOINTER Pointer
5181 ** Pointer to user memory.
5184 ** Number of bytes to copy.
5191 gckOS_CopyFromUserData(
5193 IN gctPOINTER KernelPointer,
5194 IN gctPOINTER Pointer,
5200 gcmkHEADER_ARG("Os=0x%X KernelPointer=0x%X Pointer=0x%X Size=%lu",
5201 Os, KernelPointer, Pointer, Size);
5203 /* Verify the arguments. */
5204 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
5205 gcmkVERIFY_ARGUMENT(KernelPointer != gcvNULL);
5206 gcmkVERIFY_ARGUMENT(Pointer != gcvNULL);
5207 gcmkVERIFY_ARGUMENT(Size > 0);
5209 /* Copy data from user. */
5210 if (copy_from_user(KernelPointer, Pointer, Size) != 0)
5212 /* Could not copy all the bytes. */
5213 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
5218 return gcvSTATUS_OK;
5221 /* Return the status. */
5226 /*******************************************************************************
5228 ** gckOS_CopyToUserData
5230 ** Copy data from kernel to user memory.
5235 ** Pointer to an gckOS object.
5237 ** gctPOINTER KernelPointer
5238 ** Pointer to kernel memory.
5240 ** gctPOINTER Pointer
5241 ** Pointer to user memory.
5244 ** Number of bytes to copy.
5251 gckOS_CopyToUserData(
5253 IN gctPOINTER KernelPointer,
5254 IN gctPOINTER Pointer,
5260 gcmkHEADER_ARG("Os=0x%X KernelPointer=0x%X Pointer=0x%X Size=%lu",
5261 Os, KernelPointer, Pointer, Size);
5263 /* Verify the arguments. */
5264 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
5265 gcmkVERIFY_ARGUMENT(KernelPointer != gcvNULL);
5266 gcmkVERIFY_ARGUMENT(Pointer != gcvNULL);
5267 gcmkVERIFY_ARGUMENT(Size > 0);
5269 /* Copy data to user. */
5270 if (copy_to_user(Pointer, KernelPointer, Size) != 0)
5272 /* Could not copy all the bytes. */
5273 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
5278 return gcvSTATUS_OK;
5281 /* Return the status. */
5286 /*******************************************************************************
5288 ** gckOS_WriteMemory
5290 ** Write data to a memory.
5295 ** Pointer to an gckOS object.
5297 ** gctPOINTER Address
5298 ** Address of the memory to write to.
5301 ** Data for register.
5310 IN gctPOINTER Address,
5315 gcmkHEADER_ARG("Os=0x%X Address=0x%X Data=%u", Os, Address, Data);
5317 /* Verify the arguments. */
5318 gcmkVERIFY_ARGUMENT(Address != gcvNULL);
5321 if (access_ok(VERIFY_WRITE, Address, 4))
5324 if(put_user(Data, (gctUINT32*)Address))
5326 gcmkONERROR(gcvSTATUS_INVALID_ADDRESS);
5331 /* Kernel address. */
5332 *(gctUINT32 *)Address = Data;
5337 return gcvSTATUS_OK;
5344 /*******************************************************************************
5346 ** gckOS_MapUserMemory
5348 ** Lock down a user buffer and return an DMA'able address to be used by the
5349 ** hardware to access it.
5353 ** gctPOINTER Memory
5354 ** Pointer to memory to lock down.
5357 ** Size in bytes of the memory to lock down.
5361 ** gctPOINTER * Info
5362 ** Pointer to variable receiving the information record required by
5363 ** gckOS_UnmapUserMemory.
5365 ** gctUINT32_PTR Address
5366 ** Pointer to a variable that will receive the address DMA'able by the
5370 gckOS_MapUserMemory(
5373 IN gctPOINTER Memory,
5374 IN gctUINT32 Physical,
5376 OUT gctPOINTER * Info,
5377 OUT gctUINT32_PTR Address
5382 gcmkHEADER_ARG("Os=0x%x Core=%d Memory=0x%x Size=%lu", Os, Core, Memory, Size);
5385 gcmkONERROR(gckOS_AddMapping(Os, *Address, Memory, Size));
5388 return gcvSTATUS_OK;
5395 gctSIZE_T pageCount, i, j;
5396 gctUINT32_PTR pageTable;
5397 gctUINT32 address = 0, physical = ~0U;
5398 gctUINTPTR_T start, end, memory;
5402 gcsPageInfo_PTR info = gcvNULL;
5403 struct page **pages = gcvNULL;
5405 /* Verify the arguments. */
5406 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
5407 gcmkVERIFY_ARGUMENT(Memory != gcvNULL || Physical != ~0U);
5408 gcmkVERIFY_ARGUMENT(Size > 0);
5409 gcmkVERIFY_ARGUMENT(Info != gcvNULL);
5410 gcmkVERIFY_ARGUMENT(Address != gcvNULL);
5414 memory = (gctUINTPTR_T) Memory;
5416 /* Get the number of required pages. */
5417 end = (memory + Size + PAGE_SIZE - 1) >> PAGE_SHIFT;
5418 start = memory >> PAGE_SHIFT;
5419 pageCount = end - start;
5422 gcvLEVEL_INFO, gcvZONE_OS,
5423 "%s(%d): pageCount: %d.",
5424 __FUNCTION__, __LINE__,
5429 if ((memory + Size) < memory)
5431 gcmkFOOTER_ARG("status=%d", gcvSTATUS_INVALID_ARGUMENT);
5432 return gcvSTATUS_INVALID_ARGUMENT;
5435 MEMORY_MAP_LOCK(Os);
5437 /* Allocate the Info struct. */
5438 info = (gcsPageInfo_PTR)kmalloc(sizeof(gcsPageInfo), GFP_KERNEL | gcdNOWARN);
5440 if (info == gcvNULL)
5442 status = gcvSTATUS_OUT_OF_MEMORY;
5446 /* Allocate the array of page addresses. */
5447 pages = (struct page **)kmalloc(pageCount * sizeof(struct page *), GFP_KERNEL | gcdNOWARN);
5449 if (pages == gcvNULL)
5451 status = gcvSTATUS_OUT_OF_MEMORY;
5455 if (Physical != ~0U)
5457 for (i = 0; i < pageCount; i++)
5459 pages[i] = pfn_to_page((Physical >> PAGE_SHIFT) + i);
5465 /* Get the user pages. */
5466 down_read(¤t->mm->mmap_sem);
5468 result = get_user_pages(current,
5478 up_read(¤t->mm->mmap_sem);
5480 if (result <=0 || result < pageCount)
5482 struct vm_area_struct *vma;
5484 /* Release the pages if any. */
5487 for (i = 0; i < result; i++)
5489 if (pages[i] == gcvNULL)
5494 page_cache_release(pages[i]);
5501 vma = find_vma(current->mm, memory);
5503 if (vma && (vma->vm_flags & VM_PFNMAP))
5507 gctUINTPTR_T logical = memory;
5509 for (i = 0; i < pageCount; i++)
5511 pgd_t * pgd = pgd_offset(current->mm, logical);
5512 pud_t * pud = pud_offset(pgd, logical);
5516 pmd_t * pmd = pmd_offset(pud, logical);
5517 pte = pte_offset_map_lock(current->mm, pmd, logical, &ptl);
5520 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
5525 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
5528 pages[i] = pte_page(*pte);
5529 pte_unmap_unlock(pte, ptl);
5531 /* Advance to next. */
5532 logical += PAGE_SIZE;
5537 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
5540 /* Check if this memory is contiguous for old mmu. */
5541 if (Os->device->kernels[Core]->hardware->mmuVersion == 0)
5543 for (i = 1; i < pageCount; i++)
5545 if (pages[i] != nth_page(pages[0], i))
5547 /* Non-contiguous. */
5554 /* Contiguous memory. */
5555 physical = page_to_phys(pages[0]) | (memory & ~PAGE_MASK);
5557 if (!((physical - Os->device->baseAddress) & 0x80000000))
5562 info->pages = gcvNULL;
5563 info->pageTable = gcvNULL;
5565 MEMORY_MAP_UNLOCK(Os);
5567 *Address = physical - Os->device->baseAddress;
5570 gcmkFOOTER_ARG("*Info=0x%X *Address=0x%08x",
5573 return gcvSTATUS_OK;
5578 /* Reference pages. */
5579 for (i = 0; i < pageCount; i++)
5586 for (i = 0; i < pageCount; i++)
5590 get_user(data, (gctUINT32*)((memory & PAGE_MASK) + i * PAGE_SIZE));
5593 /* Flush(clean) the data cache. */
5594 gcmkONERROR(gckOS_CacheFlush(Os, _GetProcessID(), gcvNULL,
5595 (gctPOINTER)(gctUINTPTR_T)page_to_phys(pages[i]),
5596 (gctPOINTER)(memory & PAGE_MASK) + i*PAGE_SIZE,
5601 if (Core == gcvCORE_VG)
5603 /* Allocate pages inside the page table. */
5604 gcmkERR_BREAK(gckVGMMU_AllocatePages(Os->device->kernels[Core]->vg->mmu,
5605 pageCount * (PAGE_SIZE/4096),
5606 (gctPOINTER *) &pageTable,
5612 /* Allocate pages inside the page table. */
5613 gcmkERR_BREAK(gckMMU_AllocatePages(Os->device->kernels[Core]->mmu,
5614 pageCount * (PAGE_SIZE/4096),
5615 (gctPOINTER *) &pageTable,
5619 /* Fill the page table. */
5620 for (i = 0; i < pageCount; i++)
5623 gctUINT32_PTR tab = pageTable + i * (PAGE_SIZE/4096);
5625 phys = page_to_phys(pages[i]);
5628 if (Core == gcvCORE_VG)
5630 /* Get the physical address from page struct. */
5632 gckVGMMU_SetPage(Os->device->kernels[Core]->vg->mmu,
5639 /* Get the physical address from page struct. */
5641 gckMMU_SetPage(Os->device->kernels[Core]->mmu,
5646 for (j = 1; j < (PAGE_SIZE/4096); j++)
5648 pageTable[i * (PAGE_SIZE/4096) + j] = pageTable[i * (PAGE_SIZE/4096)] + 4096 * j;
5652 gcvLEVEL_INFO, gcvZONE_OS,
5653 "%s(%d): pageTable[%d]: 0x%X 0x%X.",
5654 __FUNCTION__, __LINE__,
5655 i, phys, pageTable[i]);
5659 if (Core == gcvCORE_VG)
5661 gcmkONERROR(gckVGMMU_Flush(Os->device->kernels[Core]->vg->mmu));
5666 gcmkONERROR(gckMMU_Flush(Os->device->kernels[Core]->mmu));
5669 /* Save pointer to page table. */
5670 info->pageTable = pageTable;
5671 info->pages = pages;
5673 *Info = (gctPOINTER) info;
5676 gcvLEVEL_INFO, gcvZONE_OS,
5677 "%s(%d): info->pages: 0x%X, info->pageTable: 0x%X, info: 0x%X.",
5678 __FUNCTION__, __LINE__,
5684 offset = (Physical != ~0U)
5685 ? (Physical & ~PAGE_MASK)
5686 : (memory & ~PAGE_MASK);
5688 /* Return address. */
5689 *Address = address + offset;
5692 gcvLEVEL_INFO, gcvZONE_OS,
5693 "%s(%d): Address: 0x%X.",
5694 __FUNCTION__, __LINE__,
5699 status = gcvSTATUS_OK;
5705 if (gcmIS_ERROR(status))
5709 "%s(%d): error occured: %d.",
5710 __FUNCTION__, __LINE__,
5714 /* Release page array. */
5715 if (result > 0 && pages != gcvNULL)
5719 "%s(%d): error: page table is freed.",
5720 __FUNCTION__, __LINE__
5723 for (i = 0; i < result; i++)
5725 if (pages[i] == gcvNULL)
5729 page_cache_release(pages[i]);
5733 if (info!= gcvNULL && pages != gcvNULL)
5737 "%s(%d): error: pages is freed.",
5738 __FUNCTION__, __LINE__
5741 /* Free the page table. */
5743 info->pages = gcvNULL;
5746 /* Release page info struct. */
5747 if (info != gcvNULL)
5751 "%s(%d): error: info is freed.",
5752 __FUNCTION__, __LINE__
5755 /* Free the page info struct. */
5761 MEMORY_MAP_UNLOCK(Os);
5763 /* Return the status. */
5764 if (gcmIS_SUCCESS(status))
5766 gcmkFOOTER_ARG("*Info=0x%X *Address=0x%08x", *Info, *Address);
5778 /*******************************************************************************
5780 ** gckOS_UnmapUserMemory
5782 ** Unlock a user buffer and that was previously locked down by
5783 ** gckOS_MapUserMemory.
5787 ** gctPOINTER Memory
5788 ** Pointer to memory to unlock.
5791 ** Size in bytes of the memory to unlock.
5794 ** Information record returned by gckOS_MapUserMemory.
5796 ** gctUINT32_PTR Address
5797 ** The address returned by gckOS_MapUserMemory.
5804 gckOS_UnmapUserMemory(
5807 IN gctPOINTER Memory,
5810 IN gctUINT32 Address
5815 gcmkHEADER_ARG("Os=0x%X Core=%d Memory=0x%X Size=%lu Info=0x%X Address0x%08x",
5816 Os, Core, Memory, Size, Info, Address);
5819 gcmkONERROR(gckOS_RemoveMapping(Os, Memory, Size));
5822 return gcvSTATUS_OK;
5829 gctUINTPTR_T memory, start, end;
5830 gcsPageInfo_PTR info;
5831 gctSIZE_T pageCount, i;
5832 struct page **pages;
5834 /* Verify the arguments. */
5835 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
5836 gcmkVERIFY_ARGUMENT(Memory != gcvNULL);
5837 gcmkVERIFY_ARGUMENT(Size > 0);
5838 gcmkVERIFY_ARGUMENT(Info != gcvNULL);
5842 info = (gcsPageInfo_PTR) Info;
5844 pages = info->pages;
5847 gcvLEVEL_INFO, gcvZONE_OS,
5848 "%s(%d): info=0x%X, pages=0x%X.",
5849 __FUNCTION__, __LINE__,
5853 /* Invalid page array. */
5854 if (pages == gcvNULL && info->pageTable == gcvNULL)
5859 return gcvSTATUS_OK;
5862 memory = (gctUINTPTR_T)Memory;
5863 end = (memory + Size + PAGE_SIZE - 1) >> PAGE_SHIFT;
5864 start = memory >> PAGE_SHIFT;
5865 pageCount = end - start;
5868 if ((memory + Size) < memory)
5870 gcmkFOOTER_ARG("status=%d", gcvSTATUS_INVALID_ARGUMENT);
5871 return gcvSTATUS_INVALID_ARGUMENT;
5875 gcvLEVEL_INFO, gcvZONE_OS,
5876 "%s(%d): memory: 0x%X, pageCount: %d, pageTable: 0x%X.",
5877 __FUNCTION__, __LINE__,
5878 memory, pageCount, info->pageTable
5881 MEMORY_MAP_LOCK(Os);
5883 gcmkASSERT(info->pageTable != gcvNULL);
5886 if (Core == gcvCORE_VG)
5888 /* Free the pages from the MMU. */
5889 gcmkERR_BREAK(gckVGMMU_FreePages(Os->device->kernels[Core]->vg->mmu,
5891 pageCount * (PAGE_SIZE/4096)
5897 /* Free the pages from the MMU. */
5898 gcmkERR_BREAK(gckMMU_FreePages(Os->device->kernels[Core]->mmu,
5900 pageCount * (PAGE_SIZE/4096)
5904 /* Release the page cache. */
5907 for (i = 0; i < pageCount; i++)
5910 gcvLEVEL_INFO, gcvZONE_OS,
5911 "%s(%d): pages[%d]: 0x%X.",
5912 __FUNCTION__, __LINE__,
5916 if (!PageReserved(pages[i]))
5918 SetPageDirty(pages[i]);
5921 page_cache_release(pages[i]);
5926 status = gcvSTATUS_OK;
5930 if (info != gcvNULL)
5932 /* Free the page array. */
5933 if (info->pages != gcvNULL)
5941 MEMORY_MAP_UNLOCK(Os);
5943 /* Return the status. */
5950 /*******************************************************************************
5952 ** gckOS_GetBaseAddress
5954 ** Get the base address for the physical memory.
5959 ** Pointer to the gckOS object.
5963 ** gctUINT32_PTR BaseAddress
5964 ** Pointer to a variable that will receive the base address.
5967 gckOS_GetBaseAddress(
5969 OUT gctUINT32_PTR BaseAddress
5972 gcmkHEADER_ARG("Os=0x%X", Os);
5974 /* Verify the arguments. */
5975 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
5976 gcmkVERIFY_ARGUMENT(BaseAddress != gcvNULL);
5978 /* Return base address. */
5979 *BaseAddress = Os->device->baseAddress;
5982 gcmkFOOTER_ARG("*BaseAddress=0x%08x", *BaseAddress);
5983 return gcvSTATUS_OK;
5987 gckOS_SuspendInterrupt(
5991 return gckOS_SuspendInterruptEx(Os, gcvCORE_MAJOR);
5995 gckOS_SuspendInterruptEx(
6000 gcmkHEADER_ARG("Os=0x%X Core=%d", Os, Core);
6002 /* Verify the arguments. */
6003 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6005 disable_irq(Os->device->irqLines[Core]);
6008 return gcvSTATUS_OK;
6012 gckOS_ResumeInterrupt(
6016 return gckOS_ResumeInterruptEx(Os, gcvCORE_MAJOR);
6020 gckOS_ResumeInterruptEx(
6025 gcmkHEADER_ARG("Os=0x%X Core=%d", Os, Core);
6027 /* Verify the arguments. */
6028 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6030 enable_irq(Os->device->irqLines[Core]);
6033 return gcvSTATUS_OK;
6038 IN gctPOINTER Destination,
6039 IN gctCONST_POINTER Source,
6043 gcmkHEADER_ARG("Destination=0x%X Source=0x%X Bytes=%lu",
6044 Destination, Source, Bytes);
6046 gcmkVERIFY_ARGUMENT(Destination != gcvNULL);
6047 gcmkVERIFY_ARGUMENT(Source != gcvNULL);
6048 gcmkVERIFY_ARGUMENT(Bytes > 0);
6050 memcpy(Destination, Source, Bytes);
6053 return gcvSTATUS_OK;
6058 IN gctPOINTER Memory,
6062 gcmkHEADER_ARG("Memory=0x%X Bytes=%lu", Memory, Bytes);
6064 gcmkVERIFY_ARGUMENT(Memory != gcvNULL);
6065 gcmkVERIFY_ARGUMENT(Bytes > 0);
6067 memset(Memory, 0, Bytes);
6070 return gcvSTATUS_OK;
6073 /*******************************************************************************
6074 ********************************* Cache Control ********************************
6075 *******************************************************************************/
6077 #if !gcdCACHE_FUNCTION_UNIMPLEMENTED && defined(CONFIG_OUTER_CACHE)
6078 static inline gceSTATUS
6080 gceCACHEOPERATION Type,
6081 unsigned long Start,
6087 case gcvCACHE_CLEAN:
6088 outer_clean_range(Start, End);
6090 case gcvCACHE_INVALIDATE:
6091 outer_inv_range(Start, End);
6093 case gcvCACHE_FLUSH:
6094 outer_flush_range(Start, End);
6097 return gcvSTATUS_INVALID_ARGUMENT;
6100 return gcvSTATUS_OK;
6103 #if gcdENABLE_OUTER_CACHE_PATCH
6104 /*******************************************************************************
6105 ** _HandleOuterCache
6107 ** Handle the outer cache for the specified addresses.
6112 ** Pointer to gckOS object.
6114 ** gctUINT32 ProcessID
6115 ** Process ID Logical belongs.
6117 ** gctPHYS_ADDR Handle
6118 ** Physical address handle. If gcvNULL it is video memory.
6120 ** gctPOINTER Physical
6121 ** Physical address to flush.
6123 ** gctPOINTER Logical
6124 ** Logical address to flush.
6127 ** Size of the address range in bytes to flush.
6129 ** gceOUTERCACHE_OPERATION Type
6130 ** Operation need to be execute.
6135 IN gctUINT32 ProcessID,
6136 IN gctPHYS_ADDR Handle,
6137 IN gctPOINTER Physical,
6138 IN gctPOINTER Logical,
6140 IN gceCACHEOPERATION Type
6144 gctUINT32 i, pageNum;
6145 unsigned long paddr;
6148 gcmkHEADER_ARG("Os=0x%X ProcessID=%d Handle=0x%X Logical=0x%X Bytes=%lu",
6149 Os, ProcessID, Handle, Logical, Bytes);
6151 if (Physical != gcvNULL)
6153 /* Non paged memory or gcvPOOL_USER surface */
6154 paddr = (unsigned long) Physical;
6155 gcmkONERROR(outer_func(Type, paddr, paddr + Bytes));
6157 else if ((Handle == gcvNULL)
6158 || (Handle != gcvNULL && ((PLINUX_MDL)Handle)->contiguous)
6161 /* Video Memory or contiguous virtual memory */
6162 gcmkONERROR(gckOS_GetPhysicalAddress(Os, Logical, (gctUINT32*)&paddr));
6163 gcmkONERROR(outer_func(Type, paddr, paddr + Bytes));
6167 /* Non contiguous virtual memory */
6168 vaddr = (gctPOINTER)gcmALIGN_BASE((gctUINTPTR_T)Logical, PAGE_SIZE);
6169 pageNum = GetPageCount(Bytes, 0);
6171 for (i = 0; i < pageNum; i += 1)
6173 gcmkONERROR(_ConvertLogical2Physical(
6175 vaddr + PAGE_SIZE * i,
6181 gcmkONERROR(outer_func(Type, paddr, paddr + PAGE_SIZE));
6189 return gcvSTATUS_OK;
6192 /* Return the status. */
6199 /*******************************************************************************
6202 ** Clean the cache for the specified addresses. The GPU is going to need the
6203 ** data. If the system is allocating memory as non-cachable, this function can
6209 ** Pointer to gckOS object.
6211 ** gctUINT32 ProcessID
6212 ** Process ID Logical belongs.
6214 ** gctPHYS_ADDR Handle
6215 ** Physical address handle. If gcvNULL it is video memory.
6217 ** gctPOINTER Physical
6218 ** Physical address to flush.
6220 ** gctPOINTER Logical
6221 ** Logical address to flush.
6224 ** Size of the address range in bytes to flush.
6229 IN gctUINT32 ProcessID,
6230 IN gctPHYS_ADDR Handle,
6231 IN gctPOINTER Physical,
6232 IN gctPOINTER Logical,
6236 gcmkHEADER_ARG("Os=0x%X ProcessID=%d Handle=0x%X Logical=0x%X Bytes=%lu",
6237 Os, ProcessID, Handle, Logical, Bytes);
6239 /* Verify the arguments. */
6240 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6241 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
6242 gcmkVERIFY_ARGUMENT(Bytes > 0);
6244 #if !gcdCACHE_FUNCTION_UNIMPLEMENTED
6248 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
6249 dmac_map_area(Logical, Bytes, DMA_TO_DEVICE);
6251 dmac_clean_range(Logical, Logical + Bytes);
6254 #if defined(CONFIG_OUTER_CACHE)
6256 #if gcdENABLE_OUTER_CACHE_PATCH
6257 _HandleOuterCache(Os, ProcessID, Handle, Physical, Logical, Bytes, gcvCACHE_CLEAN);
6259 outer_clean_range((unsigned long) Handle, (unsigned long) Handle + Bytes);
6263 #elif defined(CONFIG_MIPS)
6265 dma_cache_wback((unsigned long) Logical, Bytes);
6267 #elif defined(CONFIG_PPC)
6272 dma_sync_single_for_device(
6274 (dma_addr_t)Physical,
6282 return gcvSTATUS_OK;
6285 /*******************************************************************************
6286 ** gckOS_CacheInvalidate
6288 ** Invalidate the cache for the specified addresses. The GPU is going to need
6289 ** data. If the system is allocating memory as non-cachable, this function can
6295 ** Pointer to gckOS object.
6297 ** gctUINT32 ProcessID
6298 ** Process ID Logical belongs.
6300 ** gctPHYS_ADDR Handle
6301 ** Physical address handle. If gcvNULL it is video memory.
6303 ** gctPOINTER Logical
6304 ** Logical address to flush.
6307 ** Size of the address range in bytes to flush.
6310 gckOS_CacheInvalidate(
6312 IN gctUINT32 ProcessID,
6313 IN gctPHYS_ADDR Handle,
6314 IN gctPOINTER Physical,
6315 IN gctPOINTER Logical,
6319 gcmkHEADER_ARG("Os=0x%X ProcessID=%d Handle=0x%X Logical=0x%X Bytes=%lu",
6320 Os, ProcessID, Handle, Logical, Bytes);
6322 /* Verify the arguments. */
6323 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6324 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
6325 gcmkVERIFY_ARGUMENT(Bytes > 0);
6327 #if !gcdCACHE_FUNCTION_UNIMPLEMENTED
6331 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)
6332 dmac_map_area(Logical, Bytes, DMA_FROM_DEVICE);
6334 dmac_inv_range(Logical, Logical + Bytes);
6337 #if defined(CONFIG_OUTER_CACHE)
6339 #if gcdENABLE_OUTER_CACHE_PATCH
6340 _HandleOuterCache(Os, ProcessID, Handle, Physical, Logical, Bytes, gcvCACHE_INVALIDATE);
6342 outer_inv_range((unsigned long) Handle, (unsigned long) Handle + Bytes);
6346 #elif defined(CONFIG_MIPS)
6347 dma_cache_inv((unsigned long) Logical, Bytes);
6348 #elif defined(CONFIG_PPC)
6351 dma_sync_single_for_device(
6353 (dma_addr_t)Physical,
6361 return gcvSTATUS_OK;
6364 /*******************************************************************************
6367 ** Clean the cache for the specified addresses and invalidate the lines as
6368 ** well. The GPU is going to need and modify the data. If the system is
6369 ** allocating memory as non-cachable, this function can be ignored.
6374 ** Pointer to gckOS object.
6376 ** gctUINT32 ProcessID
6377 ** Process ID Logical belongs.
6379 ** gctPHYS_ADDR Handle
6380 ** Physical address handle. If gcvNULL it is video memory.
6382 ** gctPOINTER Logical
6383 ** Logical address to flush.
6386 ** Size of the address range in bytes to flush.
6391 IN gctUINT32 ProcessID,
6392 IN gctPHYS_ADDR Handle,
6393 IN gctPOINTER Physical,
6394 IN gctPOINTER Logical,
6398 gcmkHEADER_ARG("Os=0x%X ProcessID=%d Handle=0x%X Logical=0x%X Bytes=%lu",
6399 Os, ProcessID, Handle, Logical, Bytes);
6401 /* Verify the arguments. */
6402 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6403 gcmkVERIFY_ARGUMENT(Logical != gcvNULL);
6404 gcmkVERIFY_ARGUMENT(Bytes > 0);
6406 #if !gcdCACHE_FUNCTION_UNIMPLEMENTED
6409 dmac_flush_range(Logical, Logical + Bytes);
6411 #if defined(CONFIG_OUTER_CACHE)
6413 #if gcdENABLE_OUTER_CACHE_PATCH
6414 _HandleOuterCache(Os, ProcessID, Handle, Physical, Logical, Bytes, gcvCACHE_FLUSH);
6416 outer_flush_range((unsigned long) Handle, (unsigned long) Handle + Bytes);
6420 #elif defined(CONFIG_MIPS)
6421 dma_cache_wback_inv((unsigned long) Logical, Bytes);
6422 #elif defined(CONFIG_PPC)
6425 dma_sync_single_for_device(
6427 (dma_addr_t)Physical,
6435 return gcvSTATUS_OK;
6438 /*******************************************************************************
6439 ********************************* Broadcasting *********************************
6440 *******************************************************************************/
6442 /*******************************************************************************
6446 ** System hook for broadcast events from the kernel driver.
6451 ** Pointer to the gckOS object.
6453 ** gckHARDWARE Hardware
6454 ** Pointer to the gckHARDWARE object.
6456 ** gceBROADCAST Reason
6457 ** Reason for the broadcast. Can be one of the following values:
6459 ** gcvBROADCAST_GPU_IDLE
6460 ** Broadcasted when the kernel driver thinks the GPU might be
6461 ** idle. This can be used to handle power management.
6463 ** gcvBROADCAST_GPU_COMMIT
6464 ** Broadcasted when any client process commits a command
6465 ** buffer. This can be used to handle power management.
6467 ** gcvBROADCAST_GPU_STUCK
6468 ** Broadcasted when the kernel driver hits the timeout waiting
6471 ** gcvBROADCAST_FIRST_PROCESS
6472 ** First process is trying to connect to the kernel.
6474 ** gcvBROADCAST_LAST_PROCESS
6475 ** Last process has detached from the kernel.
6484 IN gckHARDWARE Hardware,
6485 IN gceBROADCAST Reason
6490 gcmkHEADER_ARG("Os=0x%X Hardware=0x%X Reason=%d", Os, Hardware, Reason);
6492 /* Verify the arguments. */
6493 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6494 gcmkVERIFY_OBJECT(Hardware, gcvOBJ_HARDWARE);
6498 case gcvBROADCAST_FIRST_PROCESS:
6499 gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_OS, "First process has attached");
6502 case gcvBROADCAST_LAST_PROCESS:
6503 gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_OS, "Last process has detached");
6507 gckHARDWARE_SetPowerManagementState(Hardware,
6508 gcvPOWER_OFF_BROADCAST));
6511 case gcvBROADCAST_GPU_IDLE:
6512 gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_OS, "GPU idle.");
6516 gckHARDWARE_SetPowerManagementState(Hardware,
6517 #if gcdPOWER_SUSNPEND_WHEN_IDLE
6518 gcvPOWER_SUSPEND_BROADCAST));
6520 gcvPOWER_IDLE_BROADCAST));
6523 /* Add idle process DB. */
6524 gcmkONERROR(gckKERNEL_AddProcessDB(Hardware->kernel,
6527 gcvNULL, gcvNULL, 0));
6530 case gcvBROADCAST_GPU_COMMIT:
6531 gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_OS, "COMMIT has arrived.");
6533 /* Add busy process DB. */
6534 gcmkONERROR(gckKERNEL_AddProcessDB(Hardware->kernel,
6537 gcvNULL, gcvNULL, 0));
6541 gckHARDWARE_SetPowerManagementState(Hardware, gcvPOWER_ON_AUTO));
6544 case gcvBROADCAST_GPU_STUCK:
6545 gcmkTRACE_N(gcvLEVEL_ERROR, 0, "gcvBROADCAST_GPU_STUCK\n");
6546 #if !gcdENABLE_RECOVERY
6547 gcmkONERROR(gckHARDWARE_DumpGPUState(Hardware));
6549 gcmkONERROR(gckKERNEL_Recovery(Hardware->kernel));
6552 case gcvBROADCAST_AXI_BUS_ERROR:
6553 gcmkTRACE_N(gcvLEVEL_ERROR, 0, "gcvBROADCAST_AXI_BUS_ERROR\n");
6554 gcmkONERROR(gckHARDWARE_DumpGPUState(Hardware));
6555 gcmkONERROR(gckKERNEL_Recovery(Hardware->kernel));
6561 return gcvSTATUS_OK;
6564 /* Return the status. */
6569 /*******************************************************************************
6571 ** gckOS_BroadcastHurry
6573 ** The GPU is running too slow.
6578 ** Pointer to the gckOS object.
6580 ** gckHARDWARE Hardware
6581 ** Pointer to the gckHARDWARE object.
6584 ** The higher the number, the higher the urgency to speed up the GPU.
6585 ** The maximum value is defined by the gcdDYNAMIC_EVENT_THRESHOLD.
6592 gckOS_BroadcastHurry(
6594 IN gckHARDWARE Hardware,
6598 gcmkHEADER_ARG("Os=0x%x Hardware=0x%x Urgency=%u", Os, Hardware, Urgency);
6600 /* Do whatever you need to do to speed up the GPU now. */
6604 return gcvSTATUS_OK;
6607 /*******************************************************************************
6609 ** gckOS_BroadcastCalibrateSpeed
6611 ** Calibrate the speed of the GPU.
6616 ** Pointer to the gckOS object.
6618 ** gckHARDWARE Hardware
6619 ** Pointer to the gckHARDWARE object.
6621 ** gctUINT Idle, Time
6622 ** Idle/Time will give the percentage the GPU is idle, so you can use
6623 ** this to calibrate the working point of the GPU.
6630 gckOS_BroadcastCalibrateSpeed(
6632 IN gckHARDWARE Hardware,
6637 gcmkHEADER_ARG("Os=0x%x Hardware=0x%x Idle=%u Time=%u",
6638 Os, Hardware, Idle, Time);
6640 /* Do whatever you need to do to callibrate the GPU speed. */
6644 return gcvSTATUS_OK;
6647 /*******************************************************************************
6648 ********************************** Semaphores **********************************
6649 *******************************************************************************/
6651 /*******************************************************************************
6653 ** gckOS_CreateSemaphore
6655 ** Create a semaphore.
6660 ** Pointer to the gckOS object.
6664 ** gctPOINTER * Semaphore
6665 ** Pointer to the variable that will receive the created semaphore.
6668 gckOS_CreateSemaphore(
6670 OUT gctPOINTER * Semaphore
6674 struct semaphore *sem = gcvNULL;
6676 gcmkHEADER_ARG("Os=0x%X", Os);
6678 /* Verify the arguments. */
6679 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6680 gcmkVERIFY_ARGUMENT(Semaphore != gcvNULL);
6682 /* Allocate the semaphore structure. */
6683 sem = (struct semaphore *)kmalloc(gcmSIZEOF(struct semaphore), GFP_KERNEL | gcdNOWARN);
6686 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
6689 /* Initialize the semaphore. */
6692 /* Return to caller. */
6693 *Semaphore = (gctPOINTER) sem;
6697 return gcvSTATUS_OK;
6700 /* Return the status. */
6705 /*******************************************************************************
6707 ** gckOS_AcquireSemaphore
6709 ** Acquire a semaphore.
6714 ** Pointer to the gckOS object.
6716 ** gctPOINTER Semaphore
6717 ** Pointer to the semaphore thet needs to be acquired.
6724 gckOS_AcquireSemaphore(
6726 IN gctPOINTER Semaphore
6731 gcmkHEADER_ARG("Os=0x%08X Semaphore=0x%08X", Os, Semaphore);
6733 /* Verify the arguments. */
6734 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6735 gcmkVERIFY_ARGUMENT(Semaphore != gcvNULL);
6737 /* Acquire the semaphore. */
6738 if (down_interruptible((struct semaphore *) Semaphore))
6740 gcmkONERROR(gcvSTATUS_INTERRUPTED);
6745 return gcvSTATUS_OK;
6748 /* Return the status. */
6753 /*******************************************************************************
6755 ** gckOS_TryAcquireSemaphore
6757 ** Try to acquire a semaphore.
6762 ** Pointer to the gckOS object.
6764 ** gctPOINTER Semaphore
6765 ** Pointer to the semaphore thet needs to be acquired.
6772 gckOS_TryAcquireSemaphore(
6774 IN gctPOINTER Semaphore
6779 gcmkHEADER_ARG("Os=0x%x", Os);
6781 /* Verify the arguments. */
6782 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6783 gcmkVERIFY_ARGUMENT(Semaphore != gcvNULL);
6785 /* Acquire the semaphore. */
6786 if (down_trylock((struct semaphore *) Semaphore))
6789 status = gcvSTATUS_TIMEOUT;
6796 return gcvSTATUS_OK;
6799 /*******************************************************************************
6801 ** gckOS_ReleaseSemaphore
6803 ** Release a previously acquired semaphore.
6808 ** Pointer to the gckOS object.
6810 ** gctPOINTER Semaphore
6811 ** Pointer to the semaphore thet needs to be released.
6818 gckOS_ReleaseSemaphore(
6820 IN gctPOINTER Semaphore
6823 gcmkHEADER_ARG("Os=0x%X Semaphore=0x%X", Os, Semaphore);
6825 /* Verify the arguments. */
6826 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6827 gcmkVERIFY_ARGUMENT(Semaphore != gcvNULL);
6829 /* Release the semaphore. */
6830 up((struct semaphore *) Semaphore);
6834 return gcvSTATUS_OK;
6837 /*******************************************************************************
6839 ** gckOS_DestroySemaphore
6841 ** Destroy a semaphore.
6846 ** Pointer to the gckOS object.
6848 ** gctPOINTER Semaphore
6849 ** Pointer to the semaphore thet needs to be destroyed.
6856 gckOS_DestroySemaphore(
6858 IN gctPOINTER Semaphore
6861 gcmkHEADER_ARG("Os=0x%X Semaphore=0x%X", Os, Semaphore);
6863 /* Verify the arguments. */
6864 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
6865 gcmkVERIFY_ARGUMENT(Semaphore != gcvNULL);
6867 /* Free the sempahore structure. */
6872 return gcvSTATUS_OK;
6875 /*******************************************************************************
6877 ** gckOS_GetProcessID
6879 ** Get current process ID.
6887 ** gctUINT32_PTR ProcessID
6888 ** Pointer to the variable that receives the process ID.
6892 OUT gctUINT32_PTR ProcessID
6895 /* Get process ID. */
6896 if (ProcessID != gcvNULL)
6898 *ProcessID = _GetProcessID();
6902 return gcvSTATUS_OK;
6905 /*******************************************************************************
6907 ** gckOS_GetThreadID
6909 ** Get current thread ID.
6917 ** gctUINT32_PTR ThreadID
6918 ** Pointer to the variable that receives the thread ID.
6922 OUT gctUINT32_PTR ThreadID
6925 /* Get thread ID. */
6926 if (ThreadID != gcvNULL)
6928 *ThreadID = _GetThreadID();
6932 return gcvSTATUS_OK;
6935 /*******************************************************************************
6937 ** gckOS_SetGPUPower
6939 ** Set the power of the GPU on or off.
6944 ** Pointer to a gckOS object.
6947 ** GPU whose power is set.
6950 ** gcvTRUE to turn on the clock, or gcvFALSE to turn off the clock.
6953 ** gcvTRUE to turn on the power, or gcvFALSE to turn off the power.
6967 struct clk *clk_3dcore = Os->device->clk_3d_core;
6968 struct clk *clk_3dshader = Os->device->clk_3d_shader;
6969 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0)
6970 struct clk *clk_3d_axi = Os->device->clk_3d_axi;
6972 struct clk *clk_2dcore = Os->device->clk_2d_core;
6973 struct clk *clk_2d_axi = Os->device->clk_2d_axi;
6974 struct clk *clk_vg_axi = Os->device->clk_vg_axi;
6975 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0) || LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
6979 gctBOOL oldClockState = gcvFALSE;
6980 gctBOOL oldPowerState = gcvFALSE;
6982 gcmkHEADER_ARG("Os=0x%X Core=%d Clock=%d Power=%d", Os, Core, Clock, Power);
6984 if (Os->device->kernels[Core] != NULL)
6987 if (Core == gcvCORE_VG)
6989 oldClockState = Os->device->kernels[Core]->vg->hardware->clockState;
6990 oldPowerState = Os->device->kernels[Core]->vg->hardware->powerState;
6995 oldClockState = Os->device->kernels[Core]->hardware->clockState;
6996 oldPowerState = Os->device->kernels[Core]->hardware->powerState;
7001 if((Power == gcvTRUE) && (oldPowerState == gcvFALSE))
7003 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0) || LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
7004 if(!IS_ERR(Os->device->gpu_regulator)) {
7005 ret = regulator_enable(Os->device->gpu_regulator);
7007 gckOS_Print("%s(%d): fail to enable pu regulator %d!\n",
7008 __FUNCTION__, __LINE__, ret);
7011 imx_gpc_power_up_pu(true);
7015 pm_runtime_get_sync(Os->device->pmdev);
7019 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0)
7020 if (Clock == gcvTRUE) {
7021 if (oldClockState == gcvFALSE) {
7024 clk_enable(clk_3dcore);
7026 clk_enable(clk_3dshader);
7029 clk_enable(clk_2dcore);
7030 clk_enable(clk_2d_axi);
7033 clk_enable(clk_2dcore);
7034 clk_enable(clk_vg_axi);
7041 if (oldClockState == gcvTRUE) {
7045 clk_disable(clk_3dshader);
7046 clk_disable(clk_3dcore);
7049 clk_disable(clk_2dcore);
7050 clk_disable(clk_2d_axi);
7053 clk_disable(clk_2dcore);
7054 clk_disable(clk_vg_axi);
7062 if (Clock == gcvTRUE) {
7063 if (oldClockState == gcvFALSE) {
7066 clk_prepare(clk_3dcore);
7067 clk_enable(clk_3dcore);
7068 clk_prepare(clk_3dshader);
7069 clk_enable(clk_3dshader);
7070 clk_prepare(clk_3d_axi);
7071 clk_enable(clk_3d_axi);
7074 clk_prepare(clk_2dcore);
7075 clk_enable(clk_2dcore);
7076 clk_prepare(clk_2d_axi);
7077 clk_enable(clk_2d_axi);
7080 clk_prepare(clk_2dcore);
7081 clk_enable(clk_2dcore);
7082 clk_prepare(clk_vg_axi);
7083 clk_enable(clk_vg_axi);
7090 if (oldClockState == gcvTRUE) {
7093 clk_disable(clk_3dshader);
7094 clk_unprepare(clk_3dshader);
7095 clk_disable(clk_3dcore);
7096 clk_unprepare(clk_3dcore);
7097 clk_disable(clk_3d_axi);
7098 clk_unprepare(clk_3d_axi);
7101 clk_disable(clk_2dcore);
7102 clk_unprepare(clk_2dcore);
7103 clk_disable(clk_2d_axi);
7104 clk_unprepare(clk_2d_axi);
7107 clk_disable(clk_2dcore);
7108 clk_unprepare(clk_2dcore);
7109 clk_disable(clk_vg_axi);
7110 clk_unprepare(clk_vg_axi);
7118 if((Power == gcvFALSE) && (oldPowerState == gcvTRUE))
7121 pm_runtime_put_sync(Os->device->pmdev);
7124 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0) || LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
7125 if(!IS_ERR(Os->device->gpu_regulator))
7126 regulator_disable(Os->device->gpu_regulator);
7128 imx_gpc_power_up_pu(false);
7132 /* TODO: Put your code here. */
7134 return gcvSTATUS_OK;
7137 /*******************************************************************************
7146 ** Pointer to a gckOS object.
7149 ** GPU whose power is set.
7161 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0)
7162 #define SRC_SCR_OFFSET 0
7163 #define BP_SRC_SCR_GPU3D_RST 1
7164 #define BP_SRC_SCR_GPU2D_RST 4
7165 void __iomem *src_base = IO_ADDRESS(SRC_BASE_ADDR);
7166 gctUINT32 bit_offset,val;
7168 gcmkHEADER_ARG("Os=0x%X Core=%d", Os, Core);
7170 if(Core == gcvCORE_MAJOR) {
7171 bit_offset = BP_SRC_SCR_GPU3D_RST;
7172 } else if((Core == gcvCORE_VG)
7173 ||(Core == gcvCORE_2D)) {
7174 bit_offset = BP_SRC_SCR_GPU2D_RST;
7176 return gcvSTATUS_INVALID_CONFIG;
7178 val = __raw_readl(src_base + SRC_SCR_OFFSET);
7179 val &= ~(1 << (bit_offset));
7180 val |= (1 << (bit_offset));
7181 __raw_writel(val, src_base + SRC_SCR_OFFSET);
7183 while ((__raw_readl(src_base + SRC_SCR_OFFSET) &
7184 (1 << (bit_offset))) != 0) {
7188 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
7189 struct reset_control *rstc = Os->device->rstc[Core];
7191 reset_control_reset(rstc);
7193 imx_src_reset_gpu((int)Core);
7195 return gcvSTATUS_OK;
7198 /*******************************************************************************
7200 ** gckOS_PrepareGPUFrequency
7202 ** Prepare to set GPU frequency and voltage.
7207 ** Pointer to a gckOS object.
7210 ** GPU whose frequency and voltage will be set.
7217 gckOS_PrepareGPUFrequency(
7222 return gcvSTATUS_OK;
7225 /*******************************************************************************
7227 ** gckOS_FinishGPUFrequency
7229 ** Finish GPU frequency setting.
7234 ** Pointer to a gckOS object.
7237 ** GPU whose frequency and voltage is set.
7244 gckOS_FinishGPUFrequency(
7249 return gcvSTATUS_OK;
7252 /*******************************************************************************
7254 ** gckOS_QueryGPUFrequency
7256 ** Query the current frequency of the GPU.
7261 ** Pointer to a gckOS object.
7264 ** GPU whose power is set.
7266 ** gctUINT32 * Frequency
7267 ** Pointer to a gctUINT32 to obtain current frequency, in MHz.
7270 ** Pointer to a gctUINT8 to obtain current scale(1 - 64).
7277 gckOS_QueryGPUFrequency(
7280 OUT gctUINT32 * Frequency,
7281 OUT gctUINT8 * Scale
7284 return gcvSTATUS_OK;
7287 /*******************************************************************************
7289 ** gckOS_SetGPUFrequency
7291 ** Set frequency and voltage of the GPU.
7293 ** 1. DVFS manager gives the target scale of full frequency, BSP must find
7294 ** a real frequency according to this scale and board's configure.
7296 ** 2. BSP should find a suitable voltage for this frequency.
7298 ** 3. BSP must make sure setting take effect before this function returns.
7303 ** Pointer to a gckOS object.
7306 ** GPU whose power is set.
7309 ** Target scale of full frequency, range is [1, 64]. 1 means 1/64 of
7310 ** full frequency and 64 means 64/64 of full frequency.
7317 gckOS_SetGPUFrequency(
7323 return gcvSTATUS_OK;
7326 /*----------------------------------------------------------------------------*/
7327 /*----- Profile --------------------------------------------------------------*/
7330 gckOS_GetProfileTick(
7331 OUT gctUINT64_PTR Tick
7334 struct timespec time;
7336 ktime_get_ts(&time);
7338 *Tick = time.tv_nsec + time.tv_sec * 1000000000ULL;
7340 return gcvSTATUS_OK;
7344 gckOS_QueryProfileTickRate(
7345 OUT gctUINT64_PTR TickRate
7348 struct timespec res;
7350 hrtimer_get_res(CLOCK_MONOTONIC, &res);
7352 *TickRate = res.tv_nsec + res.tv_sec * 1000000000ULL;
7354 return gcvSTATUS_OK;
7362 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,23)
7363 return div_u64(Ticks, 1000000);
7365 gctUINT64 rem = Ticks;
7366 gctUINT64 b = 1000000;
7367 gctUINT64 res, d = 1;
7368 gctUINT32 high = rem >> 32;
7370 /* Reduce the thing a bit first */
7372 if (high >= 1000000)
7375 res = (gctUINT64) high << 32;
7376 rem -= (gctUINT64) (high * 1000000) << 32;
7379 while (((gctINT64) b > 0) && (b < rem))
7398 return (gctUINT32) res;
7402 /******************************************************************************\
7403 ******************************* Signal Management ******************************
7404 \******************************************************************************/
7407 #define _GC_OBJ_ZONE gcvZONE_SIGNAL
7409 /*******************************************************************************
7411 ** gckOS_CreateSignal
7413 ** Create a new signal.
7418 ** Pointer to an gckOS object.
7420 ** gctBOOL ManualReset
7421 ** If set to gcvTRUE, gckOS_Signal with gcvFALSE must be called in
7422 ** order to set the signal to nonsignaled state.
7423 ** If set to gcvFALSE, the signal will automatically be set to
7424 ** nonsignaled state by gckOS_WaitSignal function.
7428 ** gctSIGNAL * Signal
7429 ** Pointer to a variable receiving the created gctSIGNAL.
7434 IN gctBOOL ManualReset,
7435 OUT gctSIGNAL * Signal
7439 gcsSIGNAL_PTR signal;
7441 gcmkHEADER_ARG("Os=0x%X ManualReset=%d", Os, ManualReset);
7443 /* Verify the arguments. */
7444 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
7445 gcmkVERIFY_ARGUMENT(Signal != gcvNULL);
7447 /* Create an event structure. */
7448 signal = (gcsSIGNAL_PTR) kmalloc(sizeof(gcsSIGNAL), GFP_KERNEL | gcdNOWARN);
7450 if (signal == gcvNULL)
7452 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
7455 /* Save the process ID. */
7456 signal->process = (gctHANDLE)(gctUINTPTR_T) _GetProcessID();
7457 signal->manualReset = ManualReset;
7458 signal->hardware = gcvNULL;
7459 init_completion(&signal->obj);
7460 atomic_set(&signal->ref, 1);
7462 gcmkONERROR(_AllocateIntegerId(&Os->signalDB, signal, &signal->id));
7464 *Signal = (gctSIGNAL)(gctUINTPTR_T)signal->id;
7466 gcmkFOOTER_ARG("*Signal=0x%X", *Signal);
7467 return gcvSTATUS_OK;
7470 if (signal != gcvNULL)
7480 gckOS_SignalQueryHardware(
7482 IN gctSIGNAL Signal,
7483 OUT gckHARDWARE * Hardware
7487 gcsSIGNAL_PTR signal;
7489 gcmkHEADER_ARG("Os=0x%X Signal=0x%X Hardware=0x%X", Os, Signal, Hardware);
7491 /* Verify the arguments. */
7492 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
7493 gcmkVERIFY_ARGUMENT(Signal != gcvNULL);
7494 gcmkVERIFY_ARGUMENT(Hardware != gcvNULL);
7496 gcmkONERROR(_QueryIntegerId(&Os->signalDB, (gctUINT32)(gctUINTPTR_T)Signal, (gctPOINTER)&signal));
7498 *Hardware = signal->hardware;
7501 return gcvSTATUS_OK;
7508 gckOS_SignalSetHardware(
7510 IN gctSIGNAL Signal,
7511 IN gckHARDWARE Hardware
7515 gcsSIGNAL_PTR signal;
7517 gcmkHEADER_ARG("Os=0x%X Signal=0x%X Hardware=0x%X", Os, Signal, Hardware);
7519 /* Verify the arguments. */
7520 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
7521 gcmkVERIFY_ARGUMENT(Signal != gcvNULL);
7523 gcmkONERROR(_QueryIntegerId(&Os->signalDB, (gctUINT32)(gctUINTPTR_T)Signal, (gctPOINTER)&signal));
7525 signal->hardware = Hardware;
7528 return gcvSTATUS_OK;
7534 /*******************************************************************************
7536 ** gckOS_DestroySignal
7538 ** Destroy a signal.
7543 ** Pointer to an gckOS object.
7546 ** Pointer to the gctSIGNAL.
7553 gckOS_DestroySignal(
7559 gcsSIGNAL_PTR signal;
7560 gctBOOL acquired = gcvFALSE;
7562 gcmkHEADER_ARG("Os=0x%X Signal=0x%X", Os, Signal);
7564 /* Verify the arguments. */
7565 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
7566 gcmkVERIFY_ARGUMENT(Signal != gcvNULL);
7568 gcmkONERROR(gckOS_AcquireMutex(Os, Os->signalMutex, gcvINFINITE));
7571 gcmkONERROR(_QueryIntegerId(&Os->signalDB, (gctUINT32)(gctUINTPTR_T)Signal, (gctPOINTER)&signal));
7573 gcmkASSERT(signal->id == (gctUINT32)(gctUINTPTR_T)Signal);
7575 if (atomic_dec_and_test(&signal->ref))
7577 gcmkVERIFY_OK(_DestroyIntegerId(&Os->signalDB, signal->id));
7579 /* Free the sgianl. */
7583 gcmkVERIFY_OK(gckOS_ReleaseMutex(Os, Os->signalMutex));
7584 acquired = gcvFALSE;
7588 return gcvSTATUS_OK;
7593 /* Release the mutex. */
7594 gcmkVERIFY_OK(gckOS_ReleaseMutex(Os, Os->signalMutex));
7601 /*******************************************************************************
7605 ** Set a state of the specified signal.
7610 ** Pointer to an gckOS object.
7613 ** Pointer to the gctSIGNAL.
7616 ** If gcvTRUE, the signal will be set to signaled state.
7617 ** If gcvFALSE, the signal will be set to nonsignaled state.
7626 IN gctSIGNAL Signal,
7631 gcsSIGNAL_PTR signal;
7632 gctBOOL acquired = gcvFALSE;
7634 gcmkHEADER_ARG("Os=0x%X Signal=0x%X State=%d", Os, Signal, State);
7636 /* Verify the arguments. */
7637 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
7638 gcmkVERIFY_ARGUMENT(Signal != gcvNULL);
7640 gcmkONERROR(gckOS_AcquireMutex(Os, Os->signalMutex, gcvINFINITE));
7643 gcmkONERROR(_QueryIntegerId(&Os->signalDB, (gctUINT32)(gctUINTPTR_T)Signal, (gctPOINTER)&signal));
7645 gcmkASSERT(signal->id == (gctUINT32)(gctUINTPTR_T)Signal);
7649 /* unbind the signal from hardware. */
7650 signal->hardware = gcvNULL;
7652 /* Set the event to a signaled state. */
7653 complete(&signal->obj);
7657 /* Set the event to an unsignaled state. */
7658 INIT_COMPLETION(signal->obj);
7661 gcmkVERIFY_OK(gckOS_ReleaseMutex(Os, Os->signalMutex));
7662 acquired = gcvFALSE;
7666 return gcvSTATUS_OK;
7671 /* Release the mutex. */
7672 gcmkVERIFY_OK(gckOS_ReleaseMutex(Os, Os->signalMutex));
7683 IN gctHANDLE Process,
7689 struct task_struct * userTask;
7690 struct siginfo info;
7692 userTask = FIND_TASK_BY_PID((pid_t)(gctUINTPTR_T) Process);
7694 if (userTask != gcvNULL)
7697 info.si_code = __SI_CODE(__SI_RT, SI_KERNEL);
7700 info.si_ptr = (gctPOINTER) Signal;
7702 /* Signals with numbers between 32 and 63 are real-time,
7703 send a real-time signal to the user process. */
7704 result = send_sig_info(48, &info, userTask);
7706 printk("gckOS_SetSignalVG:0x%x\n", result);
7710 status = gcvSTATUS_GENERIC_IO;
7714 "%s(%d): an error has occurred.\n",
7715 __FUNCTION__, __LINE__
7720 status = gcvSTATUS_OK;
7725 status = gcvSTATUS_GENERIC_IO;
7729 "%s(%d): an error has occurred.\n",
7730 __FUNCTION__, __LINE__
7734 /* Return status. */
7739 /*******************************************************************************
7743 ** Set the specified signal which is owned by a process to signaled state.
7748 ** Pointer to an gckOS object.
7751 ** Pointer to the gctSIGNAL.
7753 ** gctHANDLE Process
7754 ** Handle of process owning the signal.
7763 IN gctSIGNAL Signal,
7764 IN gctHANDLE Process
7770 gcmkHEADER_ARG("Os=0x%X Signal=0x%X Process=%d",
7771 Os, Signal, (gctINT32)(gctUINTPTR_T)Process);
7773 /* Map the signal into kernel space. */
7774 gcmkONERROR(gckOS_MapSignal(Os, Signal, Process, &signal));
7777 status = gckOS_Signal(Os, signal, gcvTRUE);
7779 /* Unmap the signal */
7780 gcmkVERIFY_OK(gckOS_UnmapSignal(Os, Signal));
7786 /* Return the status. */
7791 /*******************************************************************************
7795 ** Wait for a signal to become signaled.
7800 ** Pointer to an gckOS object.
7803 ** Pointer to the gctSIGNAL.
7806 ** Number of milliseconds to wait.
7807 ** Pass the value of gcvINFINITE for an infinite wait.
7816 IN gctSIGNAL Signal,
7820 gceSTATUS status = gcvSTATUS_OK;
7821 gcsSIGNAL_PTR signal;
7823 gcmkHEADER_ARG("Os=0x%X Signal=0x%X Wait=0x%08X", Os, Signal, Wait);
7825 /* Verify the arguments. */
7826 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
7827 gcmkVERIFY_ARGUMENT(Signal != gcvNULL);
7829 gcmkONERROR(_QueryIntegerId(&Os->signalDB, (gctUINT32)(gctUINTPTR_T)Signal, (gctPOINTER)&signal));
7831 gcmkASSERT(signal->id == (gctUINT32)(gctUINTPTR_T)Signal);
7835 spin_lock_irq(&signal->obj.wait.lock);
7837 if (signal->obj.done)
7839 if (!signal->manualReset)
7841 signal->obj.done = 0;
7844 status = gcvSTATUS_OK;
7848 status = gcvSTATUS_TIMEOUT;
7852 /* Convert wait to milliseconds. */
7853 #if gcdDETECT_TIMEOUT
7854 gctINT timeout = (Wait == gcvINFINITE)
7855 ? gcdINFINITE_TIMEOUT * HZ / 1000
7858 gctUINT complained = 0;
7860 gctINT timeout = (Wait == gcvINFINITE)
7861 ? MAX_SCHEDULE_TIMEOUT
7865 DECLARE_WAITQUEUE(wait, current);
7866 wait.flags |= WQ_FLAG_EXCLUSIVE;
7867 __add_wait_queue_tail(&signal->obj.wait, &wait);
7871 if (signal_pending(current))
7873 /* Interrupt received. */
7874 status = gcvSTATUS_INTERRUPTED;
7878 __set_current_state(TASK_INTERRUPTIBLE);
7879 spin_unlock_irq(&signal->obj.wait.lock);
7880 timeout = schedule_timeout(timeout);
7881 spin_lock_irq(&signal->obj.wait.lock);
7883 if (signal->obj.done)
7885 if (!signal->manualReset)
7887 signal->obj.done = 0;
7890 status = gcvSTATUS_OK;
7894 #if gcdDETECT_TIMEOUT
7895 if ((Wait == gcvINFINITE) && (timeout == 0))
7897 gctUINT32 dmaAddress1, dmaAddress2;
7898 gctUINT32 dmaState1, dmaState2;
7900 dmaState1 = dmaState2 =
7901 dmaAddress1 = dmaAddress2 = 0;
7903 /* Verify whether DMA is running. */
7904 gcmkVERIFY_OK(_VerifyDMA(
7905 Os, &dmaAddress1, &dmaAddress2, &dmaState1, &dmaState2
7908 #if gcdDETECT_DMA_ADDRESS
7909 /* Dump only if DMA appears stuck. */
7911 (dmaAddress1 == dmaAddress2)
7912 #if gcdDETECT_DMA_STATE
7913 && (dmaState1 == dmaState2)
7918 /* Increment complain count. */
7921 gcmkVERIFY_OK(_DumpGPUState(Os, gcvCORE_MAJOR));
7924 "%s(%d): signal 0x%X; forced message flush (%d).",
7925 __FUNCTION__, __LINE__, Signal, complained
7928 /* Flush the debug cache. */
7929 gcmkDEBUGFLUSH(dmaAddress2);
7932 /* Reset timeout. */
7933 timeout = gcdINFINITE_TIMEOUT * HZ / 1000;
7940 status = gcvSTATUS_TIMEOUT;
7945 __remove_wait_queue(&signal->obj.wait, &wait);
7947 #if gcdDETECT_TIMEOUT
7951 "%s(%d): signal=0x%X; waiting done; status=%d",
7952 __FUNCTION__, __LINE__, Signal, status
7958 spin_unlock_irq(&signal->obj.wait.lock);
7961 /* Return status. */
7962 gcmkFOOTER_ARG("Signal=0x%X status=%d", Signal, status);
7966 /*******************************************************************************
7970 ** Map a signal in to the current process space.
7975 ** Pointer to an gckOS object.
7978 ** Pointer to tha gctSIGNAL to map.
7980 ** gctHANDLE Process
7981 ** Handle of process owning the signal.
7985 ** gctSIGNAL * MappedSignal
7986 ** Pointer to a variable receiving the mapped gctSIGNAL.
7991 IN gctSIGNAL Signal,
7992 IN gctHANDLE Process,
7993 OUT gctSIGNAL * MappedSignal
7997 gcsSIGNAL_PTR signal;
7998 gcmkHEADER_ARG("Os=0x%X Signal=0x%X Process=0x%X", Os, Signal, Process);
8000 gcmkVERIFY_ARGUMENT(Signal != gcvNULL);
8001 gcmkVERIFY_ARGUMENT(MappedSignal != gcvNULL);
8003 gcmkONERROR(_QueryIntegerId(&Os->signalDB, (gctUINT32)(gctUINTPTR_T)Signal, (gctPOINTER)&signal));
8005 if(atomic_inc_return(&signal->ref) <= 1)
8007 /* The previous value is 0, it has been deleted. */
8008 gcmkONERROR(gcvSTATUS_INVALID_ARGUMENT);
8011 *MappedSignal = (gctSIGNAL) Signal;
8014 gcmkFOOTER_ARG("*MappedSignal=0x%X", *MappedSignal);
8015 return gcvSTATUS_OK;
8022 /*******************************************************************************
8024 ** gckOS_UnmapSignal
8031 ** Pointer to an gckOS object.
8034 ** Pointer to that gctSIGNAL mapped.
8042 return gckOS_DestroySignal(Os, Signal);
8045 /*******************************************************************************
8047 ** gckOS_CreateUserSignal
8049 ** Create a new signal to be used in the user space.
8054 ** Pointer to an gckOS object.
8056 ** gctBOOL ManualReset
8057 ** If set to gcvTRUE, gckOS_Signal with gcvFALSE must be called in
8058 ** order to set the signal to nonsignaled state.
8059 ** If set to gcvFALSE, the signal will automatically be set to
8060 ** nonsignaled state by gckOS_WaitSignal function.
8064 ** gctINT * SignalID
8065 ** Pointer to a variable receiving the created signal's ID.
8068 gckOS_CreateUserSignal(
8070 IN gctBOOL ManualReset,
8071 OUT gctINT * SignalID
8077 /* Create a new signal. */
8078 status = gckOS_CreateSignal(Os, ManualReset, (gctSIGNAL *) &signal);
8079 *SignalID = (gctINT) signal;
8084 /*******************************************************************************
8086 ** gckOS_DestroyUserSignal
8088 ** Destroy a signal to be used in the user space.
8093 ** Pointer to an gckOS object.
8103 gckOS_DestroyUserSignal(
8108 return gckOS_DestroySignal(Os, (gctSIGNAL)(gctUINTPTR_T)SignalID);
8111 /*******************************************************************************
8113 ** gckOS_WaitUserSignal
8115 ** Wait for a signal used in the user mode to become signaled.
8120 ** Pointer to an gckOS object.
8126 ** Number of milliseconds to wait.
8127 ** Pass the value of gcvINFINITE for an infinite wait.
8134 gckOS_WaitUserSignal(
8140 return gckOS_WaitSignal(Os, (gctSIGNAL)(gctUINTPTR_T)SignalID, Wait);
8143 /*******************************************************************************
8145 ** gckOS_SignalUserSignal
8147 ** Set a state of the specified signal to be used in the user space.
8152 ** Pointer to an gckOS object.
8158 ** If gcvTRUE, the signal will be set to signaled state.
8159 ** If gcvFALSE, the signal will be set to nonsignaled state.
8166 gckOS_SignalUserSignal(
8172 return gckOS_Signal(Os, (gctSIGNAL)(gctUINTPTR_T)SignalID, State);
8177 gckOS_CreateSemaphoreVG(
8179 OUT gctSEMAPHORE * Semaphore
8183 struct semaphore * newSemaphore;
8185 gcmkHEADER_ARG("Os=0x%X Semaphore=0x%x", Os, Semaphore);
8186 /* Verify the arguments. */
8187 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8188 gcmkVERIFY_ARGUMENT(Semaphore != gcvNULL);
8192 /* Allocate the semaphore structure. */
8193 newSemaphore = (struct semaphore *)kmalloc(gcmSIZEOF(struct semaphore), GFP_KERNEL | gcdNOWARN);
8194 if (newSemaphore == gcvNULL)
8196 gcmkERR_BREAK(gcvSTATUS_OUT_OF_MEMORY);
8199 /* Initialize the semaphore. */
8200 sema_init(newSemaphore, 0);
8202 /* Set the handle. */
8203 * Semaphore = (gctSEMAPHORE) newSemaphore;
8206 status = gcvSTATUS_OK;
8211 /* Return the status. */
8217 gckOS_IncrementSemaphore(
8219 IN gctSEMAPHORE Semaphore
8222 gcmkHEADER_ARG("Os=0x%X Semaphore=0x%x", Os, Semaphore);
8223 /* Verify the arguments. */
8224 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8225 gcmkVERIFY_ARGUMENT(Semaphore != gcvNULL);
8227 /* Increment the semaphore's count. */
8228 up((struct semaphore *) Semaphore);
8232 return gcvSTATUS_OK;
8236 gckOS_DecrementSemaphore(
8238 IN gctSEMAPHORE Semaphore
8244 gcmkHEADER_ARG("Os=0x%X Semaphore=0x%x", Os, Semaphore);
8245 /* Verify the arguments. */
8246 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8247 gcmkVERIFY_ARGUMENT(Semaphore != gcvNULL);
8251 /* Decrement the semaphore's count. If the count is zero, wait
8252 until it gets incremented. */
8253 result = down_interruptible((struct semaphore *) Semaphore);
8255 /* Signal received? */
8258 status = gcvSTATUS_TERMINATE;
8263 status = gcvSTATUS_OK;
8268 /* Return the status. */
8272 /*******************************************************************************
8276 ** Set the specified signal to signaled state.
8281 ** Pointer to the gckOS object.
8283 ** gctHANDLE Process
8284 ** Handle of process owning the signal.
8287 ** Pointer to the gctSIGNAL.
8296 IN gctHANDLE Process,
8302 struct task_struct * userTask;
8303 struct siginfo info;
8305 userTask = FIND_TASK_BY_PID((pid_t)(gctUINTPTR_T) Process);
8307 if (userTask != gcvNULL)
8310 info.si_code = __SI_CODE(__SI_RT, SI_KERNEL);
8313 info.si_ptr = (gctPOINTER) Signal;
8315 /* Signals with numbers between 32 and 63 are real-time,
8316 send a real-time signal to the user process. */
8317 result = send_sig_info(48, &info, userTask);
8322 status = gcvSTATUS_GENERIC_IO;
8326 "%s(%d): an error has occurred.\n",
8327 __FUNCTION__, __LINE__
8332 status = gcvSTATUS_OK;
8337 status = gcvSTATUS_GENERIC_IO;
8341 "%s(%d): an error has occurred.\n",
8342 __FUNCTION__, __LINE__
8346 /* Return status. */
8350 /******************************************************************************\
8351 ******************************** Thread Object *********************************
8352 \******************************************************************************/
8357 IN gctTHREADFUNC ThreadFunction,
8358 IN gctPOINTER ThreadParameter,
8359 OUT gctTHREAD * Thread
8363 struct task_struct * thread;
8365 gcmkHEADER_ARG("Os=0x%X ", Os);
8366 /* Verify the arguments. */
8367 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8368 gcmkVERIFY_ARGUMENT(ThreadFunction != gcvNULL);
8369 gcmkVERIFY_ARGUMENT(Thread != gcvNULL);
8373 /* Create the thread. */
8374 thread = kthread_create(
8377 "Vivante Kernel Thread"
8383 status = gcvSTATUS_GENERIC_IO;
8387 /* Start the thread. */
8388 wake_up_process(thread);
8390 /* Set the thread handle. */
8391 * Thread = (gctTHREAD) thread;
8394 status = gcvSTATUS_OK;
8399 /* Return the status. */
8409 gcmkHEADER_ARG("Os=0x%X Thread=0x%x", Os, Thread);
8410 /* Verify the arguments. */
8411 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8412 gcmkVERIFY_ARGUMENT(Thread != gcvNULL);
8414 /* Thread should have already been enabled to terminate. */
8415 kthread_stop((struct task_struct *) Thread);
8419 return gcvSTATUS_OK;
8428 gcmkHEADER_ARG("Os=0x%X Thread=0x%x", Os, Thread);
8429 /* Verify the arguments. */
8430 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8431 gcmkVERIFY_ARGUMENT(Thread != gcvNULL);
8435 return gcvSTATUS_OK;
8439 /******************************************************************************\
8440 ******************************** Software Timer ********************************
8441 \******************************************************************************/
8445 struct work_struct * work
8448 gcsOSTIMER_PTR timer = (gcsOSTIMER_PTR)work;
8450 gctTIMERFUNCTION function = timer->function;
8452 function(timer->data);
8455 /*******************************************************************************
8457 ** gckOS_CreateTimer
8459 ** Create a software timer.
8464 ** Pointer to the gckOS object.
8466 ** gctTIMERFUNCTION Function.
8467 ** Pointer to a call back function which will be called when timer is
8471 ** Private data which will be passed to call back function.
8475 ** gctPOINTER * Timer
8476 ** Pointer to a variable receiving the created timer.
8481 IN gctTIMERFUNCTION Function,
8483 OUT gctPOINTER * Timer
8487 gcsOSTIMER_PTR pointer;
8488 gcmkHEADER_ARG("Os=0x%X Function=0x%X Data=0x%X", Os, Function, Data);
8490 /* Verify the arguments. */
8491 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8492 gcmkVERIFY_ARGUMENT(Timer != gcvNULL);
8494 gcmkONERROR(gckOS_Allocate(Os, sizeof(gcsOSTIMER), (gctPOINTER)&pointer));
8496 pointer->function = Function;
8497 pointer->data = Data;
8499 INIT_DELAYED_WORK(&pointer->work, _TimerFunction);
8504 return gcvSTATUS_OK;
8511 /*******************************************************************************
8513 ** gckOS_DestroyTimer
8515 ** Destory a software timer.
8520 ** Pointer to the gckOS object.
8523 ** Pointer to the timer to be destoryed.
8535 gcsOSTIMER_PTR timer;
8536 gcmkHEADER_ARG("Os=0x%X Timer=0x%X", Os, Timer);
8538 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8539 gcmkVERIFY_ARGUMENT(Timer != gcvNULL);
8541 timer = (gcsOSTIMER_PTR)Timer;
8543 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
8544 cancel_delayed_work_sync(&timer->work);
8546 cancel_delayed_work(&timer->work);
8547 flush_workqueue(Os->workqueue);
8550 gcmkVERIFY_OK(gcmkOS_SAFE_FREE(Os, Timer));
8553 return gcvSTATUS_OK;
8556 /*******************************************************************************
8560 ** Schedule a software timer.
8565 ** Pointer to the gckOS object.
8568 ** Pointer to the timer to be scheduled.
8571 ** Delay in milliseconds.
8580 IN gctPOINTER Timer,
8584 gcsOSTIMER_PTR timer;
8586 gcmkHEADER_ARG("Os=0x%X Timer=0x%X Delay=%u", Os, Timer, Delay);
8588 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8589 gcmkVERIFY_ARGUMENT(Timer != gcvNULL);
8590 gcmkVERIFY_ARGUMENT(Delay != 0);
8592 timer = (gcsOSTIMER_PTR)Timer;
8594 if (unlikely(delayed_work_pending(&timer->work)))
8596 cancel_delayed_work(&timer->work);
8599 queue_delayed_work(Os->workqueue, &timer->work, msecs_to_jiffies(Delay));
8602 return gcvSTATUS_OK;
8605 /*******************************************************************************
8609 ** Cancel a unscheduled timer.
8614 ** Pointer to the gckOS object.
8617 ** Pointer to the timer to be cancel.
8629 gcsOSTIMER_PTR timer;
8630 gcmkHEADER_ARG("Os=0x%X Timer=0x%X", Os, Timer);
8632 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8633 gcmkVERIFY_ARGUMENT(Timer != gcvNULL);
8635 timer = (gcsOSTIMER_PTR)Timer;
8637 cancel_delayed_work(&timer->work);
8640 return gcvSTATUS_OK;
8645 gckOS_DumpCallStack(
8649 gcmkHEADER_ARG("Os=0x%X", Os);
8651 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8656 return gcvSTATUS_OK;
8661 gckOS_GetProcessNameByPid(
8663 IN gctSIZE_T Length,
8664 OUT gctUINT8_PTR String
8667 struct task_struct *task;
8669 /* Get the task_struct of the task with pid. */
8672 task = FIND_TASK_BY_PID(Pid);
8674 if (task == gcvNULL)
8677 return gcvSTATUS_NOT_FOUND;
8680 /* Get name of process. */
8681 strncpy(String, task->comm, Length);
8685 return gcvSTATUS_OK;
8688 #if gcdANDROID_NATIVE_FENCE_SYNC
8691 gckOS_CreateSyncPoint(
8693 OUT gctSYNC_POINT * SyncPoint
8697 gcsSYNC_POINT_PTR syncPoint;
8699 gcmkHEADER_ARG("Os=0x%X", Os);
8701 /* Verify the arguments. */
8702 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8704 /* Create an sync point structure. */
8705 syncPoint = (gcsSYNC_POINT_PTR) kmalloc(
8706 sizeof(gcsSYNC_POINT), GFP_KERNEL | gcdNOWARN);
8708 if (syncPoint == gcvNULL)
8710 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
8713 /* Initialize the sync point. */
8714 atomic_set(&syncPoint->ref, 1);
8715 atomic_set(&syncPoint->state, 0);
8717 gcmkONERROR(_AllocateIntegerId(&Os->syncPointDB, syncPoint, &syncPoint->id));
8719 *SyncPoint = (gctSYNC_POINT)(gctUINTPTR_T)syncPoint->id;
8721 gcmkFOOTER_ARG("*SyncPonint=%d", syncPoint->id);
8722 return gcvSTATUS_OK;
8725 if (syncPoint != gcvNULL)
8735 gckOS_ReferenceSyncPoint(
8737 IN gctSYNC_POINT SyncPoint
8741 gcsSYNC_POINT_PTR syncPoint;
8743 gcmkHEADER_ARG("Os=0x%X", Os);
8745 /* Verify the arguments. */
8746 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8747 gcmkVERIFY_ARGUMENT(SyncPoint != gcvNULL);
8750 _QueryIntegerId(&Os->syncPointDB,
8751 (gctUINT32)(gctUINTPTR_T)SyncPoint,
8752 (gctPOINTER)&syncPoint));
8754 /* Initialize the sync point. */
8755 atomic_inc(&syncPoint->ref);
8758 return gcvSTATUS_OK;
8766 gckOS_DestroySyncPoint(
8768 IN gctSYNC_POINT SyncPoint
8772 gcsSYNC_POINT_PTR syncPoint;
8773 gctBOOL acquired = gcvFALSE;
8775 gcmkHEADER_ARG("Os=0x%X SyncPoint=%d", Os, (gctUINT32)(gctUINTPTR_T)SyncPoint);
8777 /* Verify the arguments. */
8778 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8779 gcmkVERIFY_ARGUMENT(SyncPoint != gcvNULL);
8781 gcmkONERROR(gckOS_AcquireMutex(Os, Os->syncPointMutex, gcvINFINITE));
8785 _QueryIntegerId(&Os->syncPointDB,
8786 (gctUINT32)(gctUINTPTR_T)SyncPoint,
8787 (gctPOINTER)&syncPoint));
8789 gcmkASSERT(syncPoint->id == (gctUINT32)(gctUINTPTR_T)SyncPoint);
8791 if (atomic_dec_and_test(&syncPoint->ref))
8793 gcmkVERIFY_OK(_DestroyIntegerId(&Os->syncPointDB, syncPoint->id));
8795 /* Free the sgianl. */
8796 syncPoint->timeline = gcvNULL;
8800 gcmkVERIFY_OK(gckOS_ReleaseMutex(Os, Os->syncPointMutex));
8801 acquired = gcvFALSE;
8805 return gcvSTATUS_OK;
8810 /* Release the mutex. */
8811 gcmkVERIFY_OK(gckOS_ReleaseMutex(Os, Os->syncPointMutex));
8819 gckOS_SignalSyncPoint(
8821 IN gctSYNC_POINT SyncPoint
8825 gcsSYNC_POINT_PTR syncPoint;
8826 gctBOOL acquired = gcvFALSE;
8828 gcmkHEADER_ARG("Os=0x%X SyncPoint=%d", Os, (gctUINT32)(gctUINTPTR_T)SyncPoint);
8830 /* Verify the arguments. */
8831 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8832 gcmkVERIFY_ARGUMENT(SyncPoint != gcvNULL);
8834 gcmkONERROR(gckOS_AcquireMutex(Os, Os->syncPointMutex, gcvINFINITE));
8838 _QueryIntegerId(&Os->syncPointDB,
8839 (gctUINT32)(gctUINTPTR_T)SyncPoint,
8840 (gctPOINTER)&syncPoint));
8842 gcmkASSERT(syncPoint->id == (gctUINT32)(gctUINTPTR_T)SyncPoint);
8845 atomic_set(&syncPoint->state, gcvTRUE);
8847 /* Signal timeline. */
8848 if (syncPoint->timeline)
8850 sync_timeline_signal(syncPoint->timeline);
8853 gcmkVERIFY_OK(gckOS_ReleaseMutex(Os, Os->syncPointMutex));
8854 acquired = gcvFALSE;
8858 return gcvSTATUS_OK;
8863 /* Release the mutex. */
8864 gcmkVERIFY_OK(gckOS_ReleaseMutex(Os, Os->syncPointMutex));
8872 gckOS_QuerySyncPoint(
8874 IN gctSYNC_POINT SyncPoint,
8875 OUT gctBOOL_PTR State
8879 gcsSYNC_POINT_PTR syncPoint;
8881 gcmkHEADER_ARG("Os=0x%X SyncPoint=%d", Os, (gctUINT32)(gctUINTPTR_T)SyncPoint);
8883 /* Verify the arguments. */
8884 gcmkVERIFY_OBJECT(Os, gcvOBJ_OS);
8885 gcmkVERIFY_ARGUMENT(SyncPoint != gcvNULL);
8888 _QueryIntegerId(&Os->syncPointDB,
8889 (gctUINT32)(gctUINTPTR_T)SyncPoint,
8890 (gctPOINTER)&syncPoint));
8892 gcmkASSERT(syncPoint->id == (gctUINT32)(gctUINTPTR_T)SyncPoint);
8895 *State = atomic_read(&syncPoint->state);
8898 gcmkFOOTER_ARG("*State=%d", *State);
8899 return gcvSTATUS_OK;
8907 gckOS_CreateSyncTimeline(
8909 OUT gctHANDLE * Timeline
8912 struct viv_sync_timeline * timeline;
8914 /* Create viv sync timeline. */
8915 timeline = viv_sync_timeline_create("viv timeline", Os);
8917 if (timeline == gcvNULL)
8919 /* Out of memory. */
8920 return gcvSTATUS_OUT_OF_MEMORY;
8923 *Timeline = (gctHANDLE) timeline;
8924 return gcvSTATUS_OK;
8928 gckOS_DestroySyncTimeline(
8930 IN gctHANDLE Timeline
8933 struct viv_sync_timeline * timeline;
8934 gcmkASSERT(Timeline != gcvNULL);
8936 /* Destroy timeline. */
8937 timeline = (struct viv_sync_timeline *) Timeline;
8938 sync_timeline_destroy(&timeline->obj);
8940 return gcvSTATUS_OK;
8944 gckOS_CreateNativeFence(
8946 IN gctHANDLE Timeline,
8947 IN gctSYNC_POINT SyncPoint,
8948 OUT gctINT * FenceFD
8952 struct viv_sync_timeline *timeline;
8953 struct sync_pt * pt = gcvNULL;
8954 struct sync_fence * fence;
8956 gcsSYNC_POINT_PTR syncPoint;
8959 gcmkHEADER_ARG("Os=0x%X Timeline=0x%X SyncPoint=%d",
8960 Os, Timeline, (gctUINT)(gctUINTPTR_T)SyncPoint);
8963 _QueryIntegerId(&Os->syncPointDB,
8964 (gctUINT32)(gctUINTPTR_T)SyncPoint,
8965 (gctPOINTER)&syncPoint));
8967 /* Cast timeline. */
8968 timeline = (struct viv_sync_timeline *) Timeline;
8970 fd = get_unused_fd();
8974 /* Out of resources. */
8975 gcmkONERROR(gcvSTATUS_OUT_OF_RESOURCES);
8978 /* Create viv_sync_pt. */
8979 pt = viv_sync_pt_create(timeline, SyncPoint);
8983 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
8986 /* Reference sync_timeline. */
8987 syncPoint->timeline = &timeline->obj;
8989 /* Build fence name. */
8990 snprintf(name, 32, "viv sync_fence-%u", (gctUINT)(gctUINTPTR_T)SyncPoint);
8992 /* Create sync_fence. */
8993 fence = sync_fence_create(name, pt);
8997 gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
9000 /* Install fence to fd. */
9001 sync_fence_install(fence, fd);
9004 gcmkFOOTER_ARG("*FenceFD=%d", fd);
9005 return gcvSTATUS_OK;
9008 /* Error roll back. */