platform/x86/amd/hsmp: Map the metric table with ioremap() and unmap it explicitly

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The metric-table DRAM region is mapped with devm_ioremap(), which ties the
mapping to the socket device's devres scope. An upcoming change lets the
ACPI front-end share the socket array across sockets and run its own
coordinated teardown, so the mapping can no longer be pinned to a single
per-socket devres scope.

Map it with plain ioremap() instead and add hsmp_unmap_metric_tbls(), which
drops every socket's metric_tbl_addr mapping. The platform driver registers
that helper with devm_add_action_or_reset() so the mappings are released on
both remove and probe failure, while the socket array itself stays
devm-managed.

Signed-off-by: Muralidhara M K <muralidhara.mk@amd.com>
Link: https://patch.msgid.link/20260723094656.3806028-3-muralidhara.mk@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

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Muralidhara M K 2026-07-23 15:16:52 +05:30 • committed by Ilpo Järvinen

parent 9c40a57258

commit 5622564fc6

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3 changed files with 35 additions and 2 deletions

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19

drivers/platform/x86/amd/hsmp/hsmp.c

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1

drivers/platform/x86/amd/hsmp/hsmp.h

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17

drivers/platform/x86/amd/hsmp/plat.c

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