| /**************************************************************************** |
| * |
| * The MIT License (MIT) |
| * |
| * Copyright (c) 2014 - 2020 Vivante Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
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| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
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| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| ***************************************************************************** |
| * |
| * The GPL License (GPL) |
| * |
| * Copyright (C) 2014 - 2020 Vivante Corporation |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| * |
| ***************************************************************************** |
| * |
| * Note: This software is released under dual MIT and GPL licenses. A |
| * recipient may use this file under the terms of either the MIT license or |
| * GPL License. If you wish to use only one license not the other, you can |
| * indicate your decision by deleting one of the above license notices in your |
| * version of this file. |
| * |
| *****************************************************************************/ |
| |
| |
| #include "gc_hal_kernel_vxworks.h" |
| #include "gc_hal_kernel_allocator.h" |
| |
| #define _GC_OBJ_ZONE gcvZONE_ALLOCATOR |
| |
| enum um_desc_type |
| { |
| UM_PHYSICAL_MAP, |
| UM_PAGE_MAP, |
| UM_PFN_MAP, |
| }; |
| |
| /* Descriptor of a user memory imported. */ |
| struct um_desc |
| { |
| int type; |
| |
| union |
| { |
| /* UM_PHYSICAL_MAP. */ |
| unsigned long physical; |
| |
| /* UM_PAGE_MAP. */ |
| struct |
| { |
| struct page **pages; |
| }; |
| |
| /* UM_PFN_MAP. */ |
| struct |
| { |
| unsigned long *pfns; |
| int *refs; |
| }; |
| }; |
| |
| unsigned long user_vaddr; |
| size_t size; |
| unsigned long offset; |
| |
| size_t pageCount; |
| size_t extraPage; |
| }; |
| |
| static gceSTATUS |
| _Import( |
| IN gckOS Os, |
| IN gctPOINTER Memory, |
| IN gctPHYS_ADDR_T Physical, |
| IN gctSIZE_T Size, |
| IN struct um_desc * UserMemory |
| ) |
| { |
| unsigned long start, end, memory; |
| |
| gctSIZE_T extraPage; |
| gctSIZE_T pageCount; |
| |
| gcmkHEADER_ARG("Os=0x%p Memory=%p Physical=0x%x Size=%lu", Os, Memory, Physical, Size); |
| |
| /* Verify the arguments. */ |
| gcmkVERIFY_OBJECT(Os, gcvOBJ_OS); |
| gcmkVERIFY_ARGUMENT(Memory != gcvNULL || Physical != ~0ULL); |
| gcmkVERIFY_ARGUMENT(Size > 0); |
| |
| memory = (unsigned long)Memory; |
| |
| /* Get the number of required pages. */ |
| end = (memory + Size + PAGE_SIZE - 1) >> PAGE_SHIFT; |
| start = memory >> PAGE_SHIFT; |
| pageCount = end - start; |
| |
| /* Allocate extra page to avoid cache overflow */ |
| extraPage = (((memory + gcmALIGN(Size + 64, 64) + PAGE_SIZE - 1) >> PAGE_SHIFT) > end) ? 1 : 0; |
| |
| gcmkTRACE_ZONE( |
| gcvLEVEL_INFO, _GC_OBJ_ZONE, |
| "%s(%d): pageCount: %d. extraPage: %d", |
| __FUNCTION__, __LINE__, |
| pageCount, extraPage |
| ); |
| |
| /* Overflow. */ |
| if ((memory + Size) < memory) |
| { |
| gcmkFOOTER_ARG("status=%d", gcvSTATUS_INVALID_ARGUMENT); |
| return gcvSTATUS_INVALID_ARGUMENT; |
| } |
| |
| UserMemory->physical = Physical & PAGE_MASK; |
| UserMemory->user_vaddr = (unsigned long)Memory; |
| UserMemory->size = Size; |
| UserMemory->offset = (Physical != gcvINVALID_PHYSICAL_ADDRESS) |
| ? (Physical & ~PAGE_MASK) |
| : (memory & ~PAGE_MASK); |
| |
| UserMemory->pageCount = pageCount; |
| UserMemory->extraPage = extraPage; |
| |
| /* Success. */ |
| gcmkFOOTER(); |
| return gcvSTATUS_OK; |
| } |
| |
| static gceSTATUS |
| _UserMemoryAttach( |
| IN gckALLOCATOR Allocator, |
| IN gcsATTACH_DESC_PTR Desc, |
| IN PVX_MDL Mdl |
| ) |
| { |
| gceSTATUS status; |
| struct um_desc * userMemory = gcvNULL; |
| |
| gckOS os = Allocator->os; |
| |
| gcmkHEADER(); |
| |
| /* Handle is meangless for this importer. */ |
| gcmkVERIFY_ARGUMENT(Desc != gcvNULL); |
| |
| gcmkONERROR(gckOS_Allocate(os, gcmSIZEOF(struct um_desc), (gctPOINTER *)&userMemory)); |
| |
| gckOS_ZeroMemory(userMemory, gcmSIZEOF(struct um_desc)); |
| |
| gcmkONERROR(_Import(os, Desc->userMem.memory, Desc->userMem.physical, Desc->userMem.size, userMemory)); |
| |
| Mdl->priv = userMemory; |
| Mdl->numPages = userMemory->pageCount + userMemory->extraPage; |
| Mdl->contiguous = gcvTRUE; |
| |
| gcmkFOOTER_NO(); |
| return gcvSTATUS_OK; |
| |
| OnError: |
| if (userMemory != gcvNULL) |
| { |
| gckOS_Free(os,(gctPOINTER)userMemory); |
| } |
| gcmkFOOTER(); |
| return status; |
| } |
| |
| |
| static void |
| _UserMemoryFree( |
| IN gckALLOCATOR Allocator, |
| IN PVX_MDL Mdl |
| ) |
| { |
| gckOS os = Allocator->os; |
| struct um_desc *userMemory = Mdl->priv; |
| |
| gcmkHEADER(); |
| |
| if (userMemory) |
| { |
| gcmkOS_SAFE_FREE(os, userMemory); |
| } |
| |
| gcmkFOOTER_NO(); |
| } |
| |
| static gceSTATUS |
| _UserMemoryMapUser( |
| IN gckALLOCATOR Allocator, |
| IN PVX_MDL Mdl, |
| IN PVX_MDL_MAP MdlMap, |
| IN gctBOOL Cacheable |
| ) |
| { |
| struct um_desc *userMemory = Mdl->priv; |
| |
| MdlMap->vmaAddr = (gctPOINTER)userMemory->user_vaddr; |
| MdlMap->cacheable = gcvTRUE; |
| |
| return gcvSTATUS_OK; |
| } |
| |
| static void |
| _UserMemoryUnmapUser( |
| IN gckALLOCATOR Allocator, |
| IN PVX_MDL Mdl, |
| IN PVX_MDL_MAP MdlMap, |
| IN gctUINT32 Size |
| ) |
| { |
| return; |
| } |
| |
| static gceSTATUS |
| _UserMemoryMapKernel( |
| IN gckALLOCATOR Allocator, |
| IN PVX_MDL Mdl, |
| IN gctSIZE_T Offset, |
| IN gctSIZE_T Bytes, |
| OUT gctPOINTER *Logical |
| ) |
| { |
| return gcvSTATUS_NOT_SUPPORTED; |
| } |
| |
| static gceSTATUS |
| _UserMemoryUnmapKernel( |
| IN gckALLOCATOR Allocator, |
| IN PVX_MDL Mdl, |
| IN gctPOINTER Logical |
| ) |
| { |
| return gcvSTATUS_NOT_SUPPORTED; |
| } |
| |
| static gceSTATUS |
| _UserMemoryCache( |
| IN gckALLOCATOR Allocator, |
| IN PVX_MDL Mdl, |
| IN gctSIZE_T Offset, |
| IN gctPOINTER Logical, |
| IN gctUINT32 Bytes, |
| IN gceCACHEOPERATION Operation |
| ) |
| { |
| return gcvSTATUS_OK; |
| } |
| |
| static gceSTATUS |
| _UserMemoryPhysical( |
| IN gckALLOCATOR Allocator, |
| IN PVX_MDL Mdl, |
| IN gctUINT32 Offset, |
| OUT gctPHYS_ADDR_T * Physical |
| ) |
| { |
| gckOS os = Allocator->os; |
| struct um_desc *userMemory = Mdl->priv; |
| unsigned long offset = Offset + userMemory->offset; |
| gctUINT32 offsetInPage = offset & ~PAGE_MASK; |
| gctUINT32 index = offset / PAGE_SIZE; |
| |
| if (index >= userMemory->pageCount) |
| { |
| if (index < userMemory->pageCount + userMemory->extraPage) |
| { |
| *Physical = KM_TO_PHYS(os->paddingPage); |
| } |
| else |
| { |
| return gcvSTATUS_INVALID_ARGUMENT; |
| } |
| } |
| else |
| { |
| *Physical = userMemory->physical + index * PAGE_SIZE; |
| } |
| |
| *Physical += offsetInPage; |
| |
| return gcvSTATUS_OK; |
| } |
| |
| static void |
| _UserMemoryAllocatorDestructor( |
| gcsALLOCATOR *Allocator |
| ) |
| { |
| if (Allocator->privateData) |
| { |
| free(Allocator->privateData); |
| } |
| |
| free(Allocator); |
| } |
| |
| /* User memory allocator (importer) operations. */ |
| static gcsALLOCATOR_OPERATIONS UserMemoryAllocatorOperations = |
| { |
| .Attach = _UserMemoryAttach, |
| .Free = _UserMemoryFree, |
| .MapUser = _UserMemoryMapUser, |
| .UnmapUser = _UserMemoryUnmapUser, |
| .MapKernel = _UserMemoryMapKernel, |
| .UnmapKernel = _UserMemoryUnmapKernel, |
| .Cache = _UserMemoryCache, |
| .Physical = _UserMemoryPhysical, |
| }; |
| |
| /* Default allocator entry. */ |
| gceSTATUS |
| _UserMemoryAlloctorInit( |
| IN gckOS Os, |
| OUT gckALLOCATOR * Allocator |
| ) |
| { |
| gceSTATUS status; |
| gckALLOCATOR allocator; |
| |
| gcmkONERROR( |
| gckALLOCATOR_Construct(Os, &UserMemoryAllocatorOperations, &allocator)); |
| |
| allocator->destructor = _UserMemoryAllocatorDestructor; |
| |
| allocator->capability = gcvALLOC_FLAG_USERMEMORY; |
| |
| *Allocator = allocator; |
| |
| return gcvSTATUS_OK; |
| |
| OnError: |
| return status; |
| } |
| |