045a513040
PMT providers may require device specific actions before their telemetry may be read. If the read_telem() is assigned, call it instead of memcpy_fromio() and return. Since this needs to be done in multiple locations, add pmt_telem_read_mmio() as a wrapper function to perform this and any other needed checks. Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by: David E. Box <david.e.box@linux.intel.com> Link: https://lore.kernel.org/r/20240725122346.4063913-4-michael.j.ruhl@intel.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _INTEL_PMT_CLASS_H
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#define _INTEL_PMT_CLASS_H
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#include <linux/intel_vsec.h>
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#include <linux/xarray.h>
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#include <linux/types.h>
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#include <linux/bits.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include "telemetry.h"
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/* PMT access types */
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#define ACCESS_BARID 2
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#define ACCESS_LOCAL 3
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/* PMT discovery base address/offset register layout */
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#define GET_BIR(v) ((v) & GENMASK(2, 0))
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#define GET_ADDRESS(v) ((v) & GENMASK(31, 3))
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struct pci_dev;
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struct telem_endpoint {
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struct pci_dev *pcidev;
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struct telem_header header;
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struct pmt_callbacks *cb;
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void __iomem *base;
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bool present;
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struct kref kref;
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};
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struct intel_pmt_header {
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u32 base_offset;
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u32 size;
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u32 guid;
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u8 access_type;
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};
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struct intel_pmt_entry {
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struct telem_endpoint *ep;
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struct intel_pmt_header header;
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struct bin_attribute pmt_bin_attr;
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struct kobject *kobj;
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void __iomem *disc_table;
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void __iomem *base;
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struct pmt_callbacks *cb;
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unsigned long base_addr;
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size_t size;
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u32 guid;
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int devid;
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};
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struct intel_pmt_namespace {
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const char *name;
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struct xarray *xa;
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const struct attribute_group *attr_grp;
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int (*pmt_header_decode)(struct intel_pmt_entry *entry,
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struct device *dev);
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int (*pmt_add_endpoint)(struct intel_vsec_device *ivdev,
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struct intel_pmt_entry *entry);
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};
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int pmt_telem_read_mmio(struct pci_dev *pdev, struct pmt_callbacks *cb, u32 guid, void *buf,
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void __iomem *addr, u32 count);
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bool intel_pmt_is_early_client_hw(struct device *dev);
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int intel_pmt_dev_create(struct intel_pmt_entry *entry,
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struct intel_pmt_namespace *ns,
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struct intel_vsec_device *dev, int idx);
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void intel_pmt_dev_destroy(struct intel_pmt_entry *entry,
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struct intel_pmt_namespace *ns);
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#endif
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