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8bb7170c5a
The dma addresses of EQE and AEQE are wrong after migration and
results in guest kernel-mode encryption services failure.
Comparing the definition of hardware registers, we found that
there was an error when the data read from the register was
combined into an address. Therefore, the address combination
sequence needs to be corrected.
Even after fixing the above problem, we still have an issue
where the Guest from an old kernel can get migrated to
new kernel and may result in wrong data.
In order to ensure that the address is correct after migration,
if an old magic number is detected, the dma address needs to be
updated.
Fixes: b0eed08590 ("hisi_acc_vfio_pci: Add support for VFIO live migration")
Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Link: https://lore.kernel.org/r/20250510081155.55840-2-liulongfang@huawei.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
144 lines
3.4 KiB
C
144 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2021 HiSilicon Ltd. */
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#ifndef HISI_ACC_VFIO_PCI_H
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#define HISI_ACC_VFIO_PCI_H
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#include <linux/hisi_acc_qm.h>
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#define MB_POLL_PERIOD_US 10
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#define MB_POLL_TIMEOUT_US 1000
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#define QM_CACHE_WB_START 0x204
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#define QM_CACHE_WB_DONE 0x208
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#define QM_MB_CMD_PAUSE_QM 0xe
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#define QM_ABNORMAL_INT_STATUS 0x100008
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#define QM_IFC_INT_STATUS 0x0028
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#define SEC_CORE_INT_STATUS 0x301008
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#define HPRE_HAC_INT_STATUS 0x301800
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#define HZIP_CORE_INT_STATUS 0x3010AC
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#define QM_VFT_CFG_RDY 0x10006c
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#define QM_VFT_CFG_OP_WR 0x100058
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#define QM_VFT_CFG_TYPE 0x10005c
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#define QM_VFT_CFG 0x100060
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#define QM_VFT_CFG_OP_ENABLE 0x100054
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#define QM_VFT_CFG_DATA_L 0x100064
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#define QM_VFT_CFG_DATA_H 0x100068
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#define ERROR_CHECK_TIMEOUT 100
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#define CHECK_DELAY_TIME 100
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#define QM_SQC_VFT_BASE_SHIFT_V2 28
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#define QM_SQC_VFT_BASE_MASK_V2 GENMASK(15, 0)
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#define QM_SQC_VFT_NUM_SHIFT_V2 45
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#define QM_SQC_VFT_NUM_MASK_V2 GENMASK(9, 0)
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#define QM_MB_CMD_NOT_READY 0xffffffff
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/* RW regs */
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#define QM_REGS_MAX_LEN 7
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#define QM_REG_ADDR_OFFSET 0x0004
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#define QM_XQC_ADDR_OFFSET 32U
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#define QM_XQC_ADDR_LOW 0x1
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#define QM_XQC_ADDR_HIGH 0x2
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#define QM_VF_AEQ_INT_MASK 0x0004
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#define QM_VF_EQ_INT_MASK 0x000c
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#define QM_IFC_INT_SOURCE_V 0x0020
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#define QM_IFC_INT_MASK 0x0024
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#define QM_IFC_INT_SET_V 0x002c
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#define QM_QUE_ISO_CFG_V 0x0030
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#define QM_PAGE_SIZE 0x0034
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#define QM_EQC_DW0 0X8000
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#define QM_AEQC_DW0 0X8020
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#define ACC_DRV_MAJOR_VER 1
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#define ACC_DRV_MINOR_VER 0
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#define ACC_DEV_MAGIC_V1 0XCDCDCDCDFEEDAACC
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#define ACC_DEV_MAGIC_V2 0xAACCFEEDDECADEDE
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struct acc_vf_data {
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#define QM_MATCH_SIZE offsetofend(struct acc_vf_data, qm_rsv_state)
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/* QM match information */
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u64 acc_magic;
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u32 qp_num;
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u32 dev_id;
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u32 que_iso_cfg;
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u32 qp_base;
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u32 vf_qm_state;
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/* QM reserved match information */
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u16 major_ver;
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u16 minor_ver;
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u32 qm_rsv_state[2];
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/* QM RW regs */
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u32 aeq_int_mask;
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u32 eq_int_mask;
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u32 ifc_int_source;
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u32 ifc_int_mask;
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u32 ifc_int_set;
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u32 page_size;
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/* QM_EQC_DW has 7 regs */
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u32 qm_eqc_dw[7];
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/* QM_AEQC_DW has 7 regs */
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u32 qm_aeqc_dw[7];
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/* QM reserved 5 regs */
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u32 qm_rsv_regs[5];
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u32 padding;
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/* QM memory init information */
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u64 eqe_dma;
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u64 aeqe_dma;
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u64 sqc_dma;
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u64 cqc_dma;
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};
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struct hisi_acc_vf_migration_file {
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struct file *filp;
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struct mutex lock;
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bool disabled;
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struct hisi_acc_vf_core_device *hisi_acc_vdev;
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struct acc_vf_data vf_data;
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size_t total_length;
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};
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struct hisi_acc_vf_core_device {
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struct vfio_pci_core_device core_device;
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u8 match_done;
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/*
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* io_base is only valid when dev_opened is true,
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* which is protected by open_mutex.
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*/
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bool dev_opened;
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/* Ensure the accuracy of dev_opened operation */
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struct mutex open_mutex;
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/* For migration state */
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struct mutex state_mutex;
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enum vfio_device_mig_state mig_state;
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struct pci_dev *pf_dev;
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struct pci_dev *vf_dev;
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struct hisi_qm *pf_qm;
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struct hisi_qm vf_qm;
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/*
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* vf_qm_state represents the QM_VF_STATE register value.
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* It is set by Guest driver for the ACC VF dev indicating
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* the driver has loaded and configured the dev correctly.
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*/
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u32 vf_qm_state;
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int vf_id;
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struct hisi_acc_vf_migration_file *resuming_migf;
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struct hisi_acc_vf_migration_file *saving_migf;
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/*
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* It holds migration data corresponding to the last migration
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* and is used by the debugfs interface to report it.
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*/
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struct hisi_acc_vf_migration_file *debug_migf;
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};
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#endif /* HISI_ACC_VFIO_PCI_H */
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