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Use eyeq7 specific method to synchronously restart architectural
mtimer and eyeq7h specific high-resolution timer with common
hardware trigger. This ensures all timers are precisely in sync
Signed-off-by: Vladimir Kondratiev <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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There's high-resolution (1GHz) timer found in the p8700 cluster.
This timer used for precise time measurement by platform specific
software.
Synchronize this proprietary timers to reference in cluster 0.
Procedure borrowed from the aclint mtimer.
Signed-off-by: Vladimir Kondratiev <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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Modify the coherence manager register accessors to use the global variable
p8700_cm_info instead of the statically declared GLOBAL_CM_BASE array.
Also use p8700_cm_info to get the number of coherence managers and their
base addresses in mips_p8700_early_init() and mips_p8700_nascent_init().
Clean up the hard-coded values in mips/board.h, access to the coherence
manager is now fully based on information provided by platform compatible
from the device tree.
Signed-off-by: Benoît Monin <[email protected]>
Signed-off-by: Vladimir Kondratiev <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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In the multi-cluster system each cluster has its own CM (Coherency Manager).
Every CM has its "global" memory address where it is accessible from
any bus master.
Initially, all CMs accessible from the local cluster using same "local"
address. Transactions by local address are not routed through system bus
and thus are faster.
Remap CM in every cluster to the local address matching its global address.
Then, every CM is always accessed using same address, but when transaction
initiated from the local cluster it is routed internally.
This removes need for 2 PMP regions covering local address access.
CM accessor functions simplified because there's no need to detect whether
transaction is local or global
Access timer always in cluster 0
Signed-off-by: Vladimir Kondratiev <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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use function call like format; debug print returning value
of the "read" accessor
Signed-off-by: Vladimir Kondratiev <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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Extend generic platform to support MIPS P8700.
Signed-off-by: Chao-ying Fu <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Anup Patel <[email protected]>
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