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CCNCache - trace

This section describes the trace sources.

ALLOC_LINEFILL

The system allocated a complete line fill into the RAMs. This happens when the cache has to read the data for a line fill from potentially upstream or downstream. Fields:

ENTRY_INDEX unsigned int: The entry index the line has been loaded into.
MASTER_ID unsigned int: The master ID for the associated transaction.
MEMORY_ATTRIBUTES unsigned int: The memory attributes used for the allocation. bits[3:0] are the inner ACACHE, bits[7:4] are the outer ACACHE, bits[9:8] are ADOMAIN, bits[12:10] are APROT, the rest are undocumented.
NS_ADDR unsigned int: The security world and address of the first byte of the line, the MSB encodes the NS bit.

ALLOC_WRITE

The system allocated a complete line write into the RAMs. This happens when the cache receives a complete cache line write. It need not read from anywhere. Fields:

ENTRY_INDEX unsigned int: The entry index the line has been written into.
MEMORY_ATTRIBUTES unsigned int: The memory attributes used for the allocation. bits[3:0] are the inner ACACHE, bits[7:4] are the outer ACACHE, bits[9:8] are ADOMAIN, bits[12:10] are APROT, the rest are undocumented.
NS_ADDR unsigned int: The security world and address of the first byte of the line, the MSB encodes the NS bit.

ATOMIC_SLAVE_ACCESS

Information on the atomic operation at slave side. Fields:

ACCESS_RESULT enum: Result of atomic access
COMPARE_VALUE unsigned int: Value to be compared with memory by CAS
LOAD_VALUE unsigned int: Value to be loaded from memory as a result of atomic operation
MASTER unsigned int: ID of master which initiated the transaction
NS bool: Transaction is Non-Secure
OPERAND_VALUE unsigned int: Incoming operand value provided by core
OPERATION enum: Type of atomic operation
PADDR unsigned int: Physical address
STORE_VALUE unsigned int: Value to be stored to memory as a result of atomic operation

ArchMsg.Error.cached_attributes_mismatch

Attributes differ between page and line in cache from same page. Fields:

LINEATTR unsigned int: Attributes of the cache allocated lines
LINES unsigned int: Number of cache lines already allocated
NS_ADDR unsigned int: The security world and address of the first byte of the page, the MSB encodes the NS bit.
TXATTR unsigned int: Attributes of the transaction

ArchMsg.Error.cached_attributes_mismatch#lineinfo

Information about allocated lines in page. Fields:

PADDR unsigned int: address of this cache line
TAG unsigned int: tag data of this cache line

ArchMsg.Warning.ns_s_dirty_hit

Cache hit at S and NS versions of the same physical address. Fields:

INDEX0 unsigned int: The cache line index of the affected cache line
INDEX1 unsigned int: The cache line index of the other regime cache line
PADDR unsigned int: The address of the affected cache line
TAG0 unsigned int: The tag data of the affected cache line
TAG1 unsigned int: The tag data of the other regime cache line

CACHE_ACCESS

Number of cache lookups.

CACHE_MISS

cache access cache miss.

CACHE_READ_HIT

Read access cache hit. Note that this trace source causes a large slowdown in the simulation. Fields:

IS_PRELOAD enum: Is the access a preload
IS_SHARED enum: Is the access shared
MASTER_ID unsigned int: Indicates the master associated with this monitor

CACHE_READ_MISS

Read access cache miss. Fields:

IS_PRELOAD enum: Is the access a preload
IS_SHARED enum: Is the access shared
MASTER_ID unsigned int: Indicates the master associated with this monitor

CACHE_SNOOP BROADCAST

cache snoop accesses.

CACHE_WRITE_HIT

Write access cache hit. Note that this trace source causes a large slowdown in the simulation. Fields:

IS_PRELOAD enum: Is the access a preload
IS_SHARED enum: Is the access shared
MASTER_ID unsigned int: Indicates the master associated with this monitor

CACHE_WRITE_MISS

Write access cache miss. Fields:

IS_PRELOAD enum: Is the access a preload
IS_SHARED enum: Is the access shared
MASTER_ID unsigned int: Indicates the master associated with this monitor

ENTRY_BECOMES_INVALID

An entry is now invalid. The cause could be any reason. Fields:

ENTRY_INDEX unsigned int: The entry index that has become invalid.

ENTRY_SET_DIRTY

Entry change, clean/dirty. Fields:

ENTRY_INDEX unsigned int: The entry index that has become clean or dirty.
STATUS unsigned int: True if the line was made dirty

ERROR_MIXED_ATTRIBUTES_LINE

Mismatched line and transaction attributes. Fields:

ENTRY_INDEX unsigned int: The entry index that has collided.
NS_ADDR unsigned int: The security world and address of the first byte of the line, the MSB encodes the NS bit.

ERROR_MIXED_ATTRIBUTES_PAGE

Attributes differ between page and lines in cache from the same page. Fields:

NS_ADDR unsigned int: The security world and address of the first byte of the page, the MSB encodes the NS bit.

change_dvm_disabled_ports

This reports a bitmap of which ports are disabled to receive DVM messages. Fields:

new_bitmap unsigned int: The new bitmap of disabled ports
old_bitmap unsigned int: The old bitmap of disabled ports

change_upstream_disabled_ports

This reports a bitmap of which upstream ports of the cache are _disabled_ and so we won't sends snoop requests to them. Fields:

new_bitmap unsigned int: The bitmap of upstream ports that are disabled.
old_bitmap unsigned int: The bitmap of upstream ports that are disabled.

entry_after_far_atomic

A cache line has had a far atomic applied to it. Fields:

atomic_operation enum: The operation that operated on this line.
be bool: The far atomic's big-endian flag.
data unsigned int: The data in the cache line.
entry_begin_address unsigned int: The start address of the entry.
entry_index unsigned int: The entry index in the cache.
incoming_data unsigned int: The incoming data from the far atomic. For CAS operations then this is compare-value and then the replacement-value
ns enum: The security state of the line
prior_data unsigned int: The data that will be returned as the 'prior' data of the far atomic.
trans_begin_address unsigned int: The start address of the transaction.

entry_after_read

A cache line has been read. Fields:

ace_operation enum: The ACE operation that operated on this line.
data unsigned int: The data in the cache line.
dirty bool: Is the line ACE-dirty.
entry_begin_address unsigned int: The start address of the entry.
entry_index unsigned int: The entry index in the cache.
ns enum: The security state of the line
snoop bool: This transaction is a snoop transaction
trans_begin_address unsigned int: The start address of the transaction.
unique bool: Is the line ACE-unique.

entry_after_write

A cache line has been written. Fields:

ace_operation enum: The ACE operation that operated on this line.
data unsigned int: The data in the cache line.
entry_begin_address unsigned int: The start address of the entry.
entry_index unsigned int: The entry index in the cache.
ns enum: The security state of the line
trans_begin_address unsigned int: The start address of the transaction.

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