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platform/x86/intel/vsec: Support private data

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[ Upstream commit 4ec5d0231d2e4aebe41152d57c6b4f1e7ea14f08 ]

Add fields to struct intel_vsec_device, so that core module (which
creates aux bus devices) can pass private data to the client drivers.

For example there is one vsec device instance per CPU package. On a
multi package system, this private data can be used to pass the package
ID. This package id can be used by client drivers to change power
settings for a specific CPU package by targeting MMIO space of the
correct PCI device.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: David E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20230202010738.2186174-4-srinivas.pandruvada@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Stable-dep-of: 8cbcc1dbf8a6 ("platform/x86/intel/vsec: Fix xa_alloc memory leak")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Srinivas Pandruvada 2023-02-01 17:07:34 -08:00 committed by Greg Kroah-Hartman
parent 3c48b2a7ce
commit 1fa4a1e125
1 changed files with 2 additions and 0 deletions
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2
drivers/platform/x86/intel/vsec.h
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@ -38,6 +38,8 @@ struct intel_vsec_device {
struct ida *ida;
struct intel_vsec_platform_info *info;
int num_resources;
void *priv_data;
size_t priv_data_size;
};
int intel_vsec_add_aux(struct pci_dev *pdev, struct device *parent,