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|
/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/gpio/gpiodd.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2014,2018 */
/* [+] Google Inc. */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#include <trace/interface.H>
#include <errl/errlentry.H>
#include <errl/errlmanager.H>
#include <errl/errludtarget.H>
#include <errl/errludstring.H>
#include <targeting/common/targetservice.H>
#include <targeting/common/commontargeting.H>
#include <devicefw/driverif.H>
#include "gpiodd.H"
#include <gpio/gpioddreasoncodes.H>
trace_desc_t * g_trac_gpio = NULL;
TRAC_INIT( & g_trac_gpio, GPIO_COMP_NAME, KILOBYTE );
using namespace DeviceFW;
namespace GPIO
{
enum
{
// Asserting that a GPIO Port Extender will never have more than an 8-bit
// address as these devices never have more than a handful of control
// registers.
GPIO_ADDR_SIZE = 1,
};
// Link to device driver interface
DEVICE_REGISTER_ROUTE( DeviceFW::WILDCARD,
DeviceFW::GPIO,
TARGETING::TYPE_MEMBUF,
gpioPerformOp);
errlHndl_t gpioPerformOp(DeviceFW::OperationType i_opType,
TARGETING::Target * i_target,
void * io_buffer,
size_t & i_buflen,
int64_t i_accessType,
va_list i_args)
{
errlHndl_t err = NULL;
gpioAddr_t gpioInfo;
gpioInfo.deviceType = va_arg( i_args, uint64_t );
gpioInfo.portAddr = va_arg( i_args, uint64_t );
TRACDCOMP(g_trac_gpio, ENTER_MRK"gpioPerformOp(): "
"optype %d deviceType %d portAddr %d",
i_opType, gpioInfo.deviceType, gpioInfo.portAddr);
do
{
err = gpioReadAttributes (i_target, gpioInfo);
if( err )
{
break;
}
TARGETING::TargetService& ts = TARGETING::targetService();
TARGETING::Target * i2c_master = ts.toTarget(gpioInfo.i2cMasterPath);
if( i2c_master == NULL )
{
TRACFCOMP( g_trac_gpio,ERR_MRK"gpioPerformOp() - "
"I2C Target not found. Device type %d.",
gpioInfo.deviceType );
/*@
* @errortype
* @reasoncode GPIO_I2C_TARGET_NOT_FOUND
* @severity ERRORLOG::ERRL_SEV_UNRECOVERABLE
* @moduleid GPIO_PERFORM_OP
* @userdata1 Device type
* @userdata2 HUID of target
* @devdesc Invalid GPIO device type
* @custdesc A problem occurred during the IPL
* of the system.
*/
err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
GPIO::GPIO_PERFORM_OP,
GPIO::GPIO_I2C_TARGET_NOT_FOUND,
gpioInfo.deviceType,
TARGETING::get_huid(i_target),
true /*Add HB SW Callout*/ );
err->collectTrace( GPIO_COMP_NAME );
break;
}
if( i_opType == DeviceFW::READ )
{
err = gpioRead(i2c_master,
io_buffer,
i_buflen,
gpioInfo);
if( err )
{
break;
}
}
else if (i_opType == DeviceFW::WRITE )
{
err = gpioWrite(i2c_master,
io_buffer,
i_buflen,
gpioInfo);
if( err )
{
break;
}
}
else
{
TRACFCOMP( g_trac_gpio,ERR_MRK"gpioPerformOp() - "
"Invalid OP type %d.",
i_opType );
/*@
* @errortype
* @reasoncode GPIO_INVALID_OP
* @severity ERRORLOG::ERRL_SEV_UNRECOVERABLE
* @moduleid GPIO_PERFORM_OP
* @userdata1 OP type
* @userdata2 HUID of target
* @devdesc Invalid GPIO device type
* @custdesc A problem occurred during the IPL
* of the system.
*/
err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
GPIO::GPIO_PERFORM_OP,
GPIO::GPIO_INVALID_OP,
i_opType,
TARGETING::get_huid(i_target),
true /*Add HB SW Callout*/ );
err->collectTrace( GPIO_COMP_NAME );
break;
}
} while (0);
return err;
}
errlHndl_t gpioRead( TARGETING::Target * i_target,
void * o_buffer,
size_t & io_buflen,
gpioAddr_t & i_gpioInfo)
{
errlHndl_t err = NULL;
// This i2c interface writes the gpio portAddr to the device
// then reads the value of the port w/o a stop bit in between ops
err = deviceOp( DeviceFW::READ,
i_target,
o_buffer,
io_buflen,
DEVICE_I2C_ADDRESS_OFFSET
( i_gpioInfo.i2cPort,
i_gpioInfo.engine,
i_gpioInfo.i2cDeviceAddr,
GPIO_ADDR_SIZE,
reinterpret_cast<uint8_t*>(&(i_gpioInfo.portAddr)),
i_gpioInfo.i2cMuxBusSelector,
&(i_gpioInfo.i2cMuxPath)
)
);
if(err)
{
err->collectTrace( GPIO_COMP_NAME );
}
return err;
}
errlHndl_t gpioWrite ( TARGETING::Target * i_target,
void * i_buffer,
size_t i_buflen,
gpioAddr_t & i_gpioInfo)
{
errlHndl_t err = NULL;
size_t cmdlen = GPIO_ADDR_SIZE + i_buflen;
uint8_t cmd[cmdlen];
cmd[0] = i_gpioInfo.portAddr;
memcpy(&(cmd[GPIO_ADDR_SIZE]), i_buffer, i_buflen);
err = deviceOp( DeviceFW::WRITE,
i_target,
&cmd,
cmdlen,
DEVICE_I2C_ADDRESS
( i_gpioInfo.i2cPort,
i_gpioInfo.engine,
i_gpioInfo.i2cDeviceAddr,
i_gpioInfo.i2cMuxBusSelector,
&(i_gpioInfo.i2cMuxPath)
)
);
if(err)
{
err->collectTrace( GPIO_COMP_NAME );
}
return err;
}
errlHndl_t gpioReadAttributes ( TARGETING::Target * i_target,
gpioAddr_t & io_gpioInfo)
{
errlHndl_t err = NULL;
TARGETING::GpioInfo gpioData;
bool attrReadErr = false;
switch(io_gpioInfo.deviceType)
{
case PCA95X_GPIO:
if( !( i_target->
tryGetAttr<TARGETING::ATTR_GPIO_INFO>( gpioData ) ) )
{
attrReadErr = true;
}
break;
default:
TRACFCOMP( g_trac_gpio,ERR_MRK"gpioReadAttributes() - "
"Invalid device type (%d) to read attributes from!",
io_gpioInfo.deviceType );
/*@
* @errortype
* @reasoncode GPIO_INVALID_DEVICE_TYPE
* @severity ERRORLOG::ERRL_SEV_UNRECOVERABLE
* @moduleid GPIO_READATTRIBUTES
* @userdata1 Device type
* @userdata2 HUID of target
* @devdesc Invalid GPIO device type
* @custdesc A problem occurred during the IPL
* of the system.
*/
err = new ERRORLOG::ErrlEntry(ERRORLOG::ERRL_SEV_UNRECOVERABLE,
GPIO::GPIO_READATTRIBUTES,
GPIO::GPIO_INVALID_DEVICE_TYPE,
io_gpioInfo.deviceType,
TARGETING::get_huid(i_target),
true /*Add HB SW Callout*/ );
err->collectTrace( GPIO_COMP_NAME );
break;
}
if(attrReadErr)
{
TRACFCOMP( g_trac_gpio,
ERR_MRK"gpioReadAttributes() - ERROR reading "
"attributes for device type %d!",
io_gpioInfo.deviceType );
/*@
* @errortype
* @reasoncode GPIO_ATTR_INFO_NOT_FOUND
* @severity ERRORLOG::ERRL_SEV_UNRECOVERABLE
* @moduleid GPIO_READATTRIBUTES
* @userdata1 HUID of target
* @userdata2 GPIO device type
* @devdesc GPIO device attribute was not found
* @custdesc A problem occurred during the IPL
* of the system.
*/
err = new ERRORLOG::ErrlEntry(
ERRORLOG::ERRL_SEV_UNRECOVERABLE,
GPIO::GPIO_READATTRIBUTES,
GPIO::GPIO_ATTR_INFO_NOT_FOUND,
TARGETING::get_huid(i_target),
io_gpioInfo.deviceType,
true /*Add HB SW Callout*/);
err->collectTrace( GPIO_COMP_NAME );
}
if( !err )
{
io_gpioInfo.i2cMasterPath = gpioData.i2cMasterPath;
io_gpioInfo.engine = gpioData.engine;
io_gpioInfo.i2cPort = gpioData.port;
io_gpioInfo.i2cDeviceAddr = gpioData.devAddr;
io_gpioInfo.i2cMuxBusSelector = gpioData.i2cMuxBusSelector;
io_gpioInfo.i2cMuxPath = gpioData.i2cMuxPath;
}
return err;
}
}; // end namespace GPIO
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