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/**
* @file pnordd.C
*
* @brief Implementation of the PNOR Device Driver
*/
/*****************************************************************************/
// I n c l u d e s
/*****************************************************************************/
#include <sys/mmio.h>
#include <sys/task.h>
#include <sys/sync.h>
#include <string.h>
#include <devicefw/driverif.H>
#include <trace/interface.H>
#include <errl/errlentry.H>
#include <targeting/targetservice.H>
#include <errl/errlmanager.H>
#include "pnordd.H"
#include <pnor/pnorif.H>
#include <pnor/pnor_reasoncodes.H>
#define FAKE_PNOR_START 5*1024*1024
#define FAKE_PNOR_END 8*1024*1024
#define FAKE_PNOR_SIZE 3*1024*1024
extern trace_desc_t* g_trac_pnor;
namespace PNOR
{
/**
* @brief Performs an PNOR Read Operation
* This function performs a PNOR Read operation. It follows a pre-defined
* prototype functions in order to be registered with the device-driver
* framework.
*
* @param[in] i_opType Operation type, see DeviceFW::OperationType
* in driverif.H
* @param[in] i_target PNOR target
* @param[in/out] io_buffer Read: Pointer to output data storage
* Write: Pointer to input data storage
* @param[in/out] io_buflen Input: size of io_buffer (in bytes)
* Output:
* Read: Size of output data
* Write: Size of data written
* @param[in] i_accessType DeviceFW::AccessType enum (usrif.H)
* @param[in] i_args This is an argument list for DD framework.
* In this function, there's only one argument,
* containing the PNOR address and chip select
* @return errlHndl_t
*/
errlHndl_t ddRead(DeviceFW::OperationType i_opType,
TARGETING::Target* i_target,
void* io_buffer,
size_t& io_buflen,
int64_t i_accessType,
va_list i_args)
{
errlHndl_t l_err = NULL;
uint64_t l_addr = va_arg(i_args,uint64_t);
do{
l_err = Singleton<PnorDD>::instance().read(io_buffer,
io_buflen,
l_addr);
if(l_err)
{
break;
}
}while(0);
return l_err;
}
/**
* @brief Performs an PNOR Write Operation
* This function performs a PNOR Write operation. It follows a pre-defined
* prototype functions in order to be registered with the device-driver
* framework.
*
* @param[in] i_opType Operation type, see DeviceFW::OperationType
* in driverif.H
* @param[in] i_target PNOR target
* @param[in/out] io_buffer Read: Pointer to output data storage
* Write: Pointer to input data storage
* @param[in/out] io_buflen Input: size of io_buffer (in bytes)
* Output:
* Read: Size of output data
* Write: Size of data written
* @param[in] i_accessType DeviceFW::AccessType enum (usrif.H)
* @param[in] i_args This is an argument list for DD framework.
* In this function, there's only one argument,
* containing the PNOR address and chip select
* @return errlHndl_t
*/
errlHndl_t ddWrite(DeviceFW::OperationType i_opType,
TARGETING::Target* i_target,
void* io_buffer,
size_t& io_buflen,
int64_t i_accessType,
va_list i_args)
{
errlHndl_t l_err = NULL;
uint64_t l_addr = va_arg(i_args,uint64_t);
do{
l_err = Singleton<PnorDD>::instance().write(io_buffer,
io_buflen,
l_addr);
if(l_err)
{
break;
}
}while(0);
return l_err;
}
// Register PNORDD access functions to DD framework
DEVICE_REGISTER_ROUTE(DeviceFW::READ,
DeviceFW::PNOR,
TARGETING::TYPE_PROC,
ddRead);
DEVICE_REGISTER_ROUTE(DeviceFW::WRITE,
DeviceFW::PNOR,
TARGETING::TYPE_PROC,
ddWrite);
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
errlHndl_t setLSCAccessMode(lscMode i_mode)
{
errlHndl_t l_err = NULL;
do{
l_err = Singleton<PnorDD>::instance().setAccessMode(i_mode);
if(l_err)
{
break;
}
}while(0);
return l_err;
}
/**
* @brief Read PNOR
*/
errlHndl_t PnorDD::read(void* o_buffer,
size_t& io_buflen,
uint64_t i_address)
{
//TRACDCOMP(g_trac_pnor, "PnorDD::read(i_address=0x%llx)> ", i_address);
errlHndl_t l_err = NULL;
do{
//mask off chip select for now, will probably break up fake PNOR into
//multiple fake chips eventually
uint64_t l_address = i_address & 0x00000000FFFFFFFF;
l_err = verifyAddressRange(l_address, io_buflen);
if(l_err)
{
io_buflen = 0;
break;
}
//create a pointer to the offset start.
char * srcPtr = (char *)(FAKE_PNOR_START+l_address);
//@TODO: likely need a mutex around HW access
//copy data from memory into the buffer.
memcpy(o_buffer, srcPtr, io_buflen);
}while(0);
return l_err;
}
/**
* @brief Write PNOR
*/
errlHndl_t PnorDD::write(void* i_buffer,
size_t& io_buflen,
uint64_t i_address)
{
//TRACDCOMP(g_trac_pnor, "PnorDD::write(i_address=0x%llx)> ", i_address);
errlHndl_t l_err = NULL;
do{
//mask off chip select for now, will probably break up fake PNOR into
//multiple fake chips eventually
uint64_t l_address = i_address & 0x00000000FFFFFFFF;
l_err = verifyAddressRange(l_address, io_buflen);
if(l_err)
{
io_buflen = 0;
break;
}
//create a pointer to the offset start.
char * destPtr = (char *)(FAKE_PNOR_START+l_address);
//@TODO: likely need a mutex around HW access
//copy data from memory into the buffer.
memcpy(destPtr, i_buffer, io_buflen);
}while(0);
return l_err;
}
/**
* @brief Set PNOR to desired mode
*/
errlHndl_t PnorDD::setAccessMode(lscMode i_mode)
{
errlHndl_t l_err = NULL;
TRACFCOMP(g_trac_pnor, "PnorDD::setAccessMode(0x%llx)> ", i_mode);
do{
//@TODO: real impelementation needed
//Once we have a 'real' implementation, it will likely drive the need for mutexes
//throughout the PnorDD interfaces, to avoid issues with weak consistency or a
//read/write occuring while we're updating the mode, but
//skipping that until it's actually needed.
//Eventually need to actually change HW state here.
//For now, just record the new mode.
iv_lscMode = i_mode;
}while(0);
return l_err;
}
/********************
Private/Protected Methods
********************/
/**
* @brief Constructor
*/
PnorDD::PnorDD()
: iv_lscMode(MMRD)
{
TRACFCOMP(g_trac_pnor, "PnorDD::PnorDD()> ");
}
/**
* @brief Destructor
*/
PnorDD::~PnorDD()
{
//Nothing to do for now
}
errlHndl_t PnorDD::verifyAddressRange(uint64_t i_address,
size_t& i_length)
{
errlHndl_t l_err = NULL;
do{
if((i_address+i_length) > FAKE_PNOR_SIZE)
{
TRACFCOMP( g_trac_pnor, "PnorDD::verifyAddressRange> Invalid Address Requested : i_address=%d", i_address );
/*@
* @errortype
* @moduleid PNOR::MOD_PNORDD_VERIFYADDRESSRANGE
* @reasoncode PNOR::RC_INVALID_SECTION
* @userdata1 Requested Address
* @userdata2 Requested Length
* @devdesc PnorDD::verifyAddressRange> Invalid Address requested
*/
l_err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
PNOR::MOD_PNORDD_VERIFYADDRESSRANGE,
PNOR::RC_INVALID_ADDRESS,
TO_UINT64(i_address),
TO_UINT64(i_length));
break;
}
}while(0);
return l_err;
}
}; //end PNOR namespace
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