146 lines
2.8 KiB
C
146 lines
2.8 KiB
C
/*
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* Copyright (c) 2009-2010 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#include "sdio_cmdfields.h"
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#pragma mark -
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#pragma mark Common
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enum CommandOffset
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{
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kSDIOCmdAddressOffset = 9,
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kSDIOCmdFunctionOffset = 28,
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};
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enum CommandMask
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{
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kSDIOCmdFunctionMask = 0x7,
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kSDIOCmdAddressMask = 0x1FFFF,
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};
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enum SDIOCmdDirection
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{
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kSDIOCmdDirectionRead = (0 << 31),
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kSDIOCmdDirectionWrite = (1 << 31),
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};
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static inline UInt32
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convertFunctionToArg(UInt8 function)
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{
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return (function & kSDIOCmdFunctionMask) << kSDIOCmdFunctionOffset;
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}
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static inline UInt32
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convertAddressToArg(UInt32 address)
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{
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return (address & kSDIOCmdAddressMask) << kSDIOCmdAddressOffset;
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}
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enum SDIODirection
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sdio_getCommandDirection(enum SDIOCommandIndex index, UInt32 argument)
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{
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switch (index) {
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case kSDIOCmd52_IORWDirect:
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case kSDIOCmd53_IORWExtended:
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return (argument & kSDIOCmdDirectionWrite) ? kSDIODirectionWrite : kSDIODirectionRead;
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default:
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return kSDIODirectionNone;
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}
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}
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#pragma mark -
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#pragma mark Cmd5
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UInt32
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sdio_getOCR(const struct SDIOCommandResponse *cmd5Response)
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{
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return cmd5Response->response[0] & 0x00fffff;
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}
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bool
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sdio_getNumIOFunctions(const struct SDIOCommandResponse *cmd5Response)
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{
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return (cmd5Response->response[0] & 0x70000000) >> 28;
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}
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bool
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sdio_isMemoryPresent(const struct SDIOCommandResponse *cmd5Response)
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{
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return cmd5Response->response[0] & 0x08000000; // >> 27
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}
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bool
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sdio_isIOReady(const struct SDIOCommandResponse *cmd5Response)
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{
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return cmd5Response->response[0] & 0x80000000; // >> 31
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}
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#pragma mark -
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#pragma mark Cmd52
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UInt32
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sdio_generateCmd52Arg(enum SDIODirection direction,
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UInt8 sdioFunction, UInt32 cardAddress, UInt8 data,
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SDIOCmd52Flags flags)
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{
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UInt32 dir = (direction & kSDIODirectionWrite) ? kSDIOCmdDirectionWrite : kSDIOCmdDirectionRead;
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return dir | convertFunctionToArg(sdioFunction) | flags
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| convertAddressToArg(cardAddress) | data;
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}
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#pragma mark -
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#pragma mark Cmd53
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enum SDIOCmd53Mask
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{
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kSDIOCmd53CountMask = 0x1FF
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};
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static inline UInt32
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convertCmd53CountToArg(UInt32 count)
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{
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return (count & kSDIOCmd53CountMask);
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}
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UInt32
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sdio_generateCmd53Arg(enum SDIODirection direction,
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UInt8 sdioFunction, UInt32 cardAddress, UInt16 count,
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SDIOCmd53Flags flags)
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{
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UInt32 dir = (direction & kSDIODirectionWrite) ? kSDIOCmdDirectionWrite : kSDIOCmdDirectionRead;
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return dir | convertFunctionToArg(sdioFunction) | flags
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| convertAddressToArg(cardAddress) | convertCmd53CountToArg(count);
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}
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UInt16
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sdio_getCmd53Count(UInt32 cmdArg)
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{
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return cmdArg & kSDIOCmd53CountMask;
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}
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