Debug and Profiling
MSC8144E Reference Manual, Rev. 3
Freescale Semiconductor
25-25
25.2.6.2 L2 ICache Bank Profiling Events
The L2 ICache provides this profiling information for each L2 ICache block (2 blocks):
— Hit/miss/prefetch hit accesses.
— Hit/miss/prefetch hit accesses in supervisor mode.
— Hit/miss/prefetch hit accesses in user mode.
— Hold cycles of cacheable accesses due to miss or pre-fetch hit.
— Hold cycles of cacheable accesses due to miss or pre-fetch hit in supervisor mode.
— Hold cycles of cacheable accesses due to miss or pre-fetch hit in user mode.
— Thrash/miss accesses.
All L2 ICache events connect to a performance monitory (PM) block. See Section 25.3 for
details.
25.2.7 DMA Controller Debug and Profiling
The DMA controller can enter debug mode only as the result of an external debug request. When
this occurs, the channel logic masks all channel requests generated towards the bus interface and
finishes all pipelined requests in the bus interface and M bus. In this state, a debugging agent
external to the MSC8144E can access the DMA controller PRAM through JTAG bus.
25.2.7.1 Debug Errors
The DMA support debugging errors and indications, such as:
BD_SIZE, MD_BD_SIZE programmed with a value of zero
Channel information that causes an illegal addresses on bus interface ports A/B.
Early Dead Line serve First Violation.
When one of the errors occurs, the DMA controller generates the error interrupt listed in Table
25-8.
See Chapter 14, Direct Memory Access (DMA) Controller for details.
Table 25-8. DMA Debug Interrupt
DSP core subsystem Interrupt Number
Description of Interrupt
143
DMA errors interrupt
Содержание MSC8144E
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