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Add an IOCTL to send mailbox commands to PUNIT using PUNIT MSRs for mailbox. Some CPU models don't have PCI device, so need to use MSRs. A limited set of mailbox commands can be sent to PUNIT. This MMIO interface is used by the intel-speed-select tool under tools/x86/power to enumerate and control Intel Speed Select features. The MBOX commands ids and semantics of the message can be checked from the source code of the tool. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
11 lines
385 B
Makefile
11 lines
385 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile - Intel Speed Select Interface drivers
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# Copyright (c) 2019, Intel Corporation.
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#
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obj-$(CONFIG_INTEL_SPEED_SELECT_INTERFACE) += isst_if_common.o
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obj-$(CONFIG_INTEL_SPEED_SELECT_INTERFACE) += isst_if_mmio.o
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obj-$(CONFIG_INTEL_SPEED_SELECT_INTERFACE) += isst_if_mbox_pci.o
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obj-$(CONFIG_INTEL_SPEED_SELECT_INTERFACE) += isst_if_mbox_msr.o
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