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183 lines
12 KiB
HTML
Executable file
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<div id="projectbrief">Xilinx SDK Drivers API Documentation</div>
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<li class="current"><a href="index.html"><span>Overview</span></a></li>
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<li><a href="annotated.html"><span>Data Structures</span></a></li>
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<div class="title">axipmon Documentation</div> </div>
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<div class="textblock"><p>The <a class="el" href="struct_x_axi_pmon.html" title="The driver's instance data. ">XAxiPmon</a> driver supports the Xilinx AXI Performance Monitor device.The AXI Performance Monitor device provides following features:</p>
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<p>Configurable number of Metric Counters and Incrementers Computes performance metrics for Agents connected to monitor slots (Up to 8 slots)</p>
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<p>The following Metrics can be computed:</p>
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<p>Metrics computed for an AXI4 MM agent: Write Request Count: Total number of write requests by/to the agent. Read Request Count: Total number of read requests given by/to the agent. Read Latency: It is defined as the time from the start of read address transaction to the beginning of the read data service. Write Latency: It is defined as the period needed a master completes write data transaction, i.e. from write address transaction to write response from slave. Write Byte Count: Total number of bytes written by/to the agent. This metric is helpful when calculating the throughput of the system. Read Byte Count: Total number of bytes read from/by the agent. Average Write Latency: Average write latency seen by the agent. It can be derived from total write latency and the write request count. Average Read Latency: Average read latency seen by the agent. It can be derived from total read latency and the read request count. Master Write Idle Cycle Count: Number of idle cycles caused by the masters during write transactions to the slave. Slave Write Idle Cycle Count: Number of idle cycles caused by this slave during write transactions to the slave. Master Read Idle Cycle Count: Number of idle cycles caused by the master during read transactions to the slave. Slave Read Idle Cycle Count: Number of idle cycles caused by this slave during read transactions to the slave.</p>
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<p>Metrics computed for an AXI4-Stream agent:</p>
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<p>Transfer Cycle Count: Total number of writes by/to the agent. Data Byte Count: Total number of data bytes written by/to the agent. This metric helps in calculating the throughput of the system. Position Byte Count: Total number of position bytes transferred. Null Byte Count: Total number of null bytes transferred. Packet Count: Total number of packets transferred.</p>
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<p>There are three modes : Advanced, Profile and Trace.</p><ul>
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<li>Advanced mode has 10 Mertic Counters, Sampled Metric Counters, Incrementors and Sampled Incrementors.</li>
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<li>Profile mode has only 47 Metric Counters and Sampled Metric Counters.</li>
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<li>Trace mode has no Counters. User should refer to the hardware device specification for detailed information about the device.</li>
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</ul>
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<p>This header file contains the prototypes of driver functions that can be used to access the AXI Performance Monitor device.</p>
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<p><b> Initialization and Configuration </b></p>
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<p>The device driver enables higher layer software (e.g., an application) to communicate to the AXI Performance Monitor device.</p>
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<p><a class="el" href="group__axipmon__v6__3.html#ga86fa6ac2c8d22145e2eb5c519ced7e06" title="This function initializes a specific XAxiPmon device/instance. ">XAxiPmon_CfgInitialize()</a> API is used to initialize the AXI Performance Monitor device. The user needs to first call the <a class="el" href="group__axipmon__v6__3.html#ga93ed0a2b99a2e74dc0da62ed674fd2bb" title="Functions in xaxipmon_sinit.c. ">XAxiPmon_LookupConfig()</a> API which returns the Configuration structure pointer which is passed as a parameter to the <a class="el" href="group__axipmon__v6__3.html#ga86fa6ac2c8d22145e2eb5c519ced7e06" title="This function initializes a specific XAxiPmon device/instance. ">XAxiPmon_CfgInitialize()</a> API.</p>
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<p><b>Interrupts</b></p>
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<p>The AXI Performance Monitor does not support Interrupts</p>
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<p><b> Virtual Memory </b></p>
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<p>This driver supports Virtual Memory. The RTOS is responsible for calculating the correct device base address in Virtual Memory space.</p>
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<p><b> Threads </b></p>
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<p>This driver is not thread safe. Any needs for threads or thread mutual exclusion must be satisfied by the layer above this driver.</p>
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<p><b> Asserts </b></p>
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<p>Asserts are used within all Xilinx drivers to enforce constraints on argument values. Asserts can be turned off on a system-wide basis by defining, at compile time, the NDEBUG identifier. By default, asserts are turned on and it is recommended that users leave asserts on during development.</p>
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<p><b> Building the driver </b></p>
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<p>The <a class="el" href="struct_x_axi_pmon.html" title="The driver's instance data. ">XAxiPmon</a> driver is composed of several source files. This allows the user to build and link only those parts of the driver that are necessary.</p>
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<p><b> Limitations of the driver </b></p>
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<p><br />
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<br />
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</p>
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<pre></pre><pre>MODIFICATION HISTORY:</pre><pre>Ver Who Date Changes
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----- ----- -------- -----------------------------------------------------
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1.00a bss 02/27/12 First release
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2.00a bss 06/23/12 Updated to support v2_00a version of IP.
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3.00a bss 09/03/12 To support v2_01_a version of IP:
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Deleted XAxiPmon_SetAgent, XAxiPmon_GetAgent APIs and
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added XAPM_FLAG_EVENT, XAPM_FLAG_EVNTSTAR,
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XAPM_FLAG_EVNTSTOP.
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Deleted XAxiPmon_SetAgent, XAxiPmon_GetAgent APIs and
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modified XAxiPmon_SetMetrics, XAxiPmon_GetMetrics APIs
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in <a class="el" href="xaxipmon_8c.html">xaxipmon.c</a>
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Deleted XAPM_AGENT_OFFSET Macro in <a class="el" href="xaxipmon__hw_8h.html">xaxipmon_hw.h</a>
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3.01a bss 10/25/12 To support new version of IP:
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Added XAPM_MCXLOGEN_OFFSET macros in <a class="el" href="xaxipmon__hw_8h.html">xaxipmon_hw.h</a>.
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Added XAxiPmon_SetMetricCounterCutOff,
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XAxiPmon_GetMetricCounterCutOff,
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XAxiPmon_EnableExternalTrigger and
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XAxiPmon_DisableExternalTrigger APIs in <a class="el" href="xaxipmon_8c.html">xaxipmon.c</a>
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Modified XAxiPmon_SetMetrics and XAxiPmon_GetMetrics
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(CR #683746) in <a class="el" href="xaxipmon_8c.html">xaxipmon.c</a>
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Added XAxiPmon_EnableEventLog,
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XAxiPmon_DisableMetricsCounter,
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XAxiPmon_EnableMetricsCounter APIs in <a class="el" href="xaxipmon_8c.html">xaxipmon.c</a> to
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replace macros in this file.
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Added XAPM_FLAG_XXX macros.
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Added XAxiPmon_StartCounters and XAxiPmon_StopCounters
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APIs (CR #683799).
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Added XAxiPmon_StartEventLog and XAxiPmon_StopEventLog
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APIs (CR #683801).
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Added XAxiPmon_GetMetricName API (CR #683803).
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Deleted XAxiPmon_SetAgent, XAxiPmon_GetAgent
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declarations (CR #677337)
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4.00a bss 01/17/13 To support new version of IP:
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Added XAPM_METRIC_SET_12 to XAPM_METRIC_SET_15 macros.
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Added XAxiPmon_SetLogEnableRanges,
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XAxiPmon_GetLogEnableRanges,
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XAxiPmon_EnableMetricCounterTrigger,
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XAxiPmon_DisableMetricCounterTrigger,
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XAxiPmon_EnableEventLogTrigger,
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XAxiPmon_DisableEventLogTrigger,
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XAxiPmon_SetWriteLatencyId,
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XAxiPmon_SetReadLatencyId,
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XAxiPmon_GetWriteLatencyId,
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XAxiPmon_GetReadLatencyId APIs and removed
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XAxiPmon_SetMetricCounterCutOff,
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XAxiPmon_GetMetricCounterCutOff,
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XAxiPmon_EnableExternalTrigger and
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XAxiPmon_DisableExternalTrigger APIs in <a class="el" href="xaxipmon_8c.html">xaxipmon.c</a>
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Added XAPM_LATENCYID_OFFSET,
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XAPM_CR_EVTLOG_EXTTRIGGER_MASK,
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XAPM_LATENCYID_RID_MASK and XAPM_LATENCYID_WID_MASK in
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<a class="el" href="xaxipmon__hw_8h.html">xaxipmon_hw.h</a>
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5.00a bss 08/26/13 To support new version of IP:
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XAxiPmon_SampleMetrics Macro.
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Modified XAxiPmon_CfgInitialize, Assert functions
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Added XAxiPmon_GetMetricCounter,
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XAxiPmon_SetSampleInterval, XAxiPmon_GetSampleInterval,
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XAxiPmon_SetWrLatencyStart, XAxiPmon_SetWrLatencyEnd,
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XAxiPmon_SetRdLatencyStart, XAxiPmon_SetRdLatencyEnd,
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XAxiPmon_GetWrLatencyStart, XAxiPmon_GetWrLatencyEnd,
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XAxiPmon_GetRdLatencyStart, XAxiPmon_GetRdLatencyEnd,
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XAxiPmon_SetWriteIdMask, XAxiPmon_SetReadIdMask,
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XAxiPmon_GetWriteIdMask and XAxiPmon_GetReadIdMask APIs
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Renamed :
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XAxiPmon_SetWriteLatencyId to
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XAxiPmon_SetWriteId, XAxiPmon_SetReadLatencyId to
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XAxiPmon_SetReadId, XAxiPmon_GetWriteLatencyId to
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XAxiPmon_GetWriteId and XAxiPmon_SetReadLatencyId to
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XAxiPmon_GetReadId. in <a class="el" href="xaxipmon_8c.html">xaxipmon.c</a>
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Added Macros XAPM_MC10_OFFSET to XAPM_MC47_OFFSET,
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XAPM_SMC10_OFFSET to XAPM_SMC47_OFFSET,
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XAPM_IDMASK_OFFSET, XAPM_CR_IDFILTER_ENABLE_MASK,
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XAPM_CR_WRLATENCY_START_MASK,
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XAPM_CR_WRLATENCY_END_MASK,
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XAPM_CR_RDLATENCY_START_MASK,
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XAPM_CR_RDLATENCY_END_MASK and
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XAPM_MAX_COUNTERS_PROFILE.
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Renamed:
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XAPM_LATENCYID_OFFSET to XAPM_ID_OFFSET,
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XAPM_LATENCYID_RID_MASK to XAPM_ID_RID_MASK,
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XAPM_LATENCYID_WID_MASK to XAPM_ID_WID_MASK.
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in <a class="el" href="xaxipmon__hw_8h.html">xaxipmon_hw.h</a>.
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Modified driver tcl to generate new parameters
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ScaleFactor, ModeProfile, ModeTrace and ModeAdvanced
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in Config structure.
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6.0 adk 19/12/13 Updated as per the New Tcl API's
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6.1 adk 16/04/14 Updated the driver tcl for the newly added parameters in
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The Axi pmon IP.
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6.2 bss 04/21/14 Updated XAxiPmon_CfgInitialize in <a class="el" href="xaxipmon_8c.html">xaxipmon.c</a> to Reset
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counters and FIFOs based on Modes(CR#782671). And if
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both profile and trace modes are present set mode as
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Advanced.
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6.2 bss 03/02/15 To support Zynq MP APM:
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Added Is32BitFiltering in <a class="el" href="struct_x_axi_pmon___config.html" title="This typedef contains configuration information for the AXI Performance Monitor device. ">XAxiPmon_Config</a> structure.
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Updated XAxiPmon_SetWriteId, XAxiPmon_SetReadId,
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XAxiPmon_GetWriteId, XAxiPmon_GetReadId
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XAxiPmon_SetWriteIdMask, XAxiPmon_SetReadIdMask
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XAxiPmon_GetWriteIdMask, XAxiPmon_GetReadIdMask
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functions in <a class="el" href="xaxipmon_8c.html">xaxipmon.c</a>.
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Added XAPM_RID_OFFSET and XAPM_RIDMASK_OFFSET in
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<a class="el" href="xaxipmon__hw_8h.html">xaxipmon_hw.h</a></pre><pre>6.3 kvn 07/02/15 Modified code according to MISRA-C:2012 guidelines.
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