/* IBM_PROLOG_BEGIN_TAG */ /* This is an automatically generated prolog. */ /* */ /* $Source: src/include/usr/targeting/attrrp.H $ */ /* */ /* IBM CONFIDENTIAL */ /* */ /* COPYRIGHT International Business Machines Corp. 2011,2012 */ /* */ /* p1 */ /* */ /* Object Code Only (OCO) source materials */ /* Licensed Internal Code Source Materials */ /* IBM HostBoot Licensed Internal Code */ /* */ /* The source code for this program is not published or otherwise */ /* divested of its trade secrets, irrespective of what has been */ /* deposited with the U.S. Copyright Office. */ /* */ /* Origin: 30 */ /* */ /* IBM_PROLOG_END_TAG */ #ifndef __TARGETING_ATTRRP_H #define __TARGETING_ATTRRP_H /** * @file targeting/attrrp.H * * @brief Interface for the attribute resource provider, which manages the * memory associated with targeting attributes and provides any * translation, if necessary */ //****************************************************************************** // Includes //****************************************************************************** #include #include #include #include #include namespace TARGETING { // Forward declaration of attribute section parsed information structure. struct AttrRP_Section; /** * @class AttrRP * * @brief Attribute Resource Provider daemon class. * * @par Detailed Description: * Provides all the functionality to translate between PNOR and * Attribute virtual memory spaces. Parses PNOR header for attribute * sections, allocates virtual memory spaces with the kernel for each * section, and handles virtual memory request messages from the * kernel. */ class AttrRP { // add some friends for the attribute sync features friend bool TargetService::writeSectionData( const std::vector& i_pages ); friend void TargetService::readSectionData( std::vector& o_pages, const SECTION_TYPE i_sectionId); public: /** * @brief Returns base address of the RO section containing the * targets * * @return Base address of the RO section containing the targets as * a void* */ void* getBaseAddress(); /** * @brief Translates given address, according to the resource * provider's translation algorithm * * @param[in] i_pAddress * Address to translate * * @return void* Returns the translated address. Common attribute * code has a static, compile time check that is used to * determine whether to call this function, however the Hostboot * compiler complains when this is not provided. Therefore * while this method exists, Hostboot will never call it, and if * it does it will always get a no-op translation. */ void* translateAddr( void* i_pAddress) { return i_pAddress; } /** * @brief Initializes and starts the AttrRP daemon. * * @param[in/out] io_taskRetErrl * Error log handle; on input, a NULL error log handle; on * output, a NULL error log handle on success, or !NULL handle * on failure * * @note If any error occurs during initialization, it will be * reported back through the TaskArgs structure to the init * service. */ static void init(errlHndl_t& io_taskRetErrl); protected: /** * @brief Initialize the attribute resource provider * * @par Detailed Description" * Ensures member variables are initialized to sane values. */ AttrRP() : iv_msgQ(NULL), iv_sections(NULL), iv_sectionCount(0) { }; /** * @brief Destroy the attribute resource provider * * @par Detailed Description: * Frees any memory allocated by the resource provider. * * @note This should never actually be used because the daemon * thread and the vmm blocks are unable to be reclaimed. * Function will assert if called due to leaky behavior. */ ~AttrRP(); /** * @brief Copies the section data buffer from the vector to the * appropriate section offset with respect to the node target ptr * and section id. * * @param[in] i_pages, vector of sectionRefData struct * * @return void */ void writeSectionData( const std::vector & i_pages); /** * @brief Populates the output vector with the correct information * for the data pages specified by the selected section * * @param[out] o_pages, vector of sectionRefData struct * * @return void */ void readSectionData( std::vector & o_pages, const SECTION_TYPE i_sectionType); private: /** * @brief Performs the startup of the daemon instance. * * @par Detailed Description: * init() is a static function that just calls * Singleton::instance().startup(). See init for * behavior. * * @param[in/out] io_taskRetErrl * Error log handle; on input, a NULL error log handle; on * output, a NULL error log handle on success, or !NULL handle * on failure */ void startup(errlHndl_t& io_taskRetErrl); /** * @brief Processes daemon messages * * @par Detailed Description: * Performs a while(1) waiting for messages from the * kernel/VMM and handles as appropriately. Reads / writes * data from / to PNOR for the attribute sections. */ void msgServiceTask() const; /** * @brief Parses the attribute section header in PNOR. * * @par Detailed Description: * Constructs the local attribute section data structures * (iv_sections / iv_sectionCount). * * @return errlHndl_t * Returns an error log handle that is NULL on success or !NULL * on failure */ errlHndl_t parseAttrSectHeader(); /** * @brief Allocates VMM sections for each Attribute section. * * @par Detailed Description: * Calls to the kernel to create VMM blocks for each attribute * and initializes permissions appropriately based on section * type. * * @return errlHndl_t * Returns an error log handle that is NULL on success or !NULL * on failure */ errlHndl_t createVmmSections(); /** * @brief Starts the attribute provider's message processor * * @par Detailed Description: * This function, being static, can be called from task_create * and is used to enter the daemon thread's msgServiceTask * loop to process messages. * * @param[in] i_pInstance * The AttrRP to call msgServiceTask on. */ static void* startMsgServiceTask(void* i_pInstance); // Message Queue for VMM requests msg_q_t iv_msgQ; // Parsed structures of the attribute sections. AttrRP_Section* iv_sections; // Count of attribute sections. size_t iv_sectionCount; }; /** * @brief Give callers access to the singleton */ TARG_DECLARE_SINGLETON(TARGETING::AttrRP,theAttrRP); } // End namespace TARGETING #endif // __TARGETING_ATTRRP_H