mirror of https://github.com/torvalds/linux.git
81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2025 Intel Corporation
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*/
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#include <drm/intel/xe_sriov_vfio.h>
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#include <linux/cleanup.h>
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#include "xe_pci.h"
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#include "xe_pm.h"
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#include "xe_sriov_pf_control.h"
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#include "xe_sriov_pf_helpers.h"
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#include "xe_sriov_pf_migration.h"
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struct xe_device *xe_sriov_vfio_get_pf(struct pci_dev *pdev)
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{
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return xe_pci_to_pf_device(pdev);
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}
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EXPORT_SYMBOL_FOR_MODULES(xe_sriov_vfio_get_pf, "xe-vfio-pci");
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bool xe_sriov_vfio_migration_supported(struct xe_device *xe)
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{
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if (!IS_SRIOV_PF(xe))
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return -EPERM;
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return xe_sriov_pf_migration_supported(xe);
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}
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EXPORT_SYMBOL_FOR_MODULES(xe_sriov_vfio_migration_supported, "xe-vfio-pci");
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#define DEFINE_XE_SRIOV_VFIO_FUNCTION(_type, _func, _impl) \
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_type xe_sriov_vfio_##_func(struct xe_device *xe, unsigned int vfid) \
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{ \
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if (!IS_SRIOV_PF(xe)) \
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return -EPERM; \
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if (vfid == PFID || vfid > xe_sriov_pf_num_vfs(xe)) \
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return -EINVAL; \
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\
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guard(xe_pm_runtime_noresume)(xe); \
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\
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return xe_sriov_pf_##_impl(xe, vfid); \
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} \
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EXPORT_SYMBOL_FOR_MODULES(xe_sriov_vfio_##_func, "xe-vfio-pci")
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DEFINE_XE_SRIOV_VFIO_FUNCTION(int, wait_flr_done, control_wait_flr);
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DEFINE_XE_SRIOV_VFIO_FUNCTION(int, suspend_device, control_pause_vf);
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DEFINE_XE_SRIOV_VFIO_FUNCTION(int, resume_device, control_resume_vf);
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DEFINE_XE_SRIOV_VFIO_FUNCTION(int, stop_copy_enter, control_trigger_save_vf);
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DEFINE_XE_SRIOV_VFIO_FUNCTION(int, stop_copy_exit, control_finish_save_vf);
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DEFINE_XE_SRIOV_VFIO_FUNCTION(int, resume_data_enter, control_trigger_restore_vf);
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DEFINE_XE_SRIOV_VFIO_FUNCTION(int, resume_data_exit, control_finish_restore_vf);
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DEFINE_XE_SRIOV_VFIO_FUNCTION(int, error, control_stop_vf);
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DEFINE_XE_SRIOV_VFIO_FUNCTION(ssize_t, stop_copy_size, migration_size);
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ssize_t xe_sriov_vfio_data_read(struct xe_device *xe, unsigned int vfid,
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char __user *buf, size_t len)
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{
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if (!IS_SRIOV_PF(xe))
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return -EPERM;
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if (vfid == PFID || vfid > xe_sriov_pf_num_vfs(xe))
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return -EINVAL;
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guard(xe_pm_runtime_noresume)(xe);
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return xe_sriov_pf_migration_read(xe, vfid, buf, len);
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}
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EXPORT_SYMBOL_FOR_MODULES(xe_sriov_vfio_data_read, "xe-vfio-pci");
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ssize_t xe_sriov_vfio_data_write(struct xe_device *xe, unsigned int vfid,
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const char __user *buf, size_t len)
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{
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if (!IS_SRIOV_PF(xe))
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return -EPERM;
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if (vfid == PFID || vfid > xe_sriov_pf_num_vfs(xe))
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return -EINVAL;
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guard(xe_pm_runtime_noresume)(xe);
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return xe_sriov_pf_migration_write(xe, vfid, buf, len);
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}
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EXPORT_SYMBOL_FOR_MODULES(xe_sriov_vfio_data_write, "xe-vfio-pci");
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