f0bbfc391a
Add logic to implement the interface for live migration defined in
qat/qat_mig_dev.h. This is specific for QAT GEN4 Virtual Functions
(VFs).
This introduces a migration data manager which is used to handle the
device state during migration. The manager ensures that the device state
is stored in a format that can be restored in the destination node.
The VF state is organized into a hierarchical structure that includes a
preamble, a general state section, a MISC bar section and an ETR bar
section. The latter contains the state of the 4 ring pairs contained on
a VF. Here is a graphical representation of the state:
preamble | general state section | leaf state
| MISC bar state section| leaf state
| ETR bar state section | bank0 state section | leaf state
| bank1 state section | leaf state
| bank2 state section | leaf state
| bank3 state section | leaf state
In addition to the implementation of the qat_migdev_ops interface and
the state manager framework, add a mutex in pfvf to avoid pf2vf messages
during migration.
Signed-off-by: Xin Zeng <xin.zeng@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright(c) 2024 Intel Corporation */
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#ifndef ADF_MSTATE_MGR_H
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#define ADF_MSTATE_MGR_H
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#define ADF_MSTATE_ID_LEN 8
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#define ADF_MSTATE_ETRB_IDS "ETRBAR"
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#define ADF_MSTATE_MISCB_IDS "MISCBAR"
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#define ADF_MSTATE_EXTB_IDS "EXTBAR"
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#define ADF_MSTATE_GEN_IDS "GENER"
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#define ADF_MSTATE_CONFIG_IDS "CONFIG"
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#define ADF_MSTATE_SECTION_NUM 5
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#define ADF_MSTATE_BANK_IDX_IDS "bnk"
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#define ADF_MSTATE_ETR_REGS_IDS "mregs"
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#define ADF_MSTATE_VINTSRC_IDS "visrc"
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#define ADF_MSTATE_VINTMSK_IDS "vimsk"
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#define ADF_MSTATE_SLA_IDS "sla"
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#define ADF_MSTATE_IOV_INIT_IDS "iovinit"
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#define ADF_MSTATE_COMPAT_VER_IDS "compver"
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#define ADF_MSTATE_GEN_CAP_IDS "gencap"
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#define ADF_MSTATE_GEN_SVCMAP_IDS "svcmap"
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#define ADF_MSTATE_GEN_EXTDC_IDS "extdc"
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#define ADF_MSTATE_VINTSRC_PF2VM_IDS "vispv"
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#define ADF_MSTATE_VINTMSK_PF2VM_IDS "vimpv"
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#define ADF_MSTATE_VM2PF_IDS "vm2pf"
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#define ADF_MSTATE_PF2VM_IDS "pf2vm"
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struct adf_mstate_mgr {
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u8 *buf;
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u8 *state;
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u32 size;
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u32 n_sects;
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};
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struct adf_mstate_preh {
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u32 magic;
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u32 version;
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u16 preh_len;
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u16 n_sects;
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u32 size;
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};
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struct adf_mstate_vreginfo {
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void *addr;
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u32 size;
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};
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struct adf_mstate_sect_h;
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typedef int (*adf_mstate_preamble_checker)(struct adf_mstate_preh *preamble, void *opa);
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typedef int (*adf_mstate_populate)(struct adf_mstate_mgr *sub_mgr, u8 *buf,
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u32 size, void *opa);
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typedef int (*adf_mstate_action)(struct adf_mstate_mgr *sub_mgr, u8 *buf, u32 size,
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void *opa);
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struct adf_mstate_mgr *adf_mstate_mgr_new(u8 *buf, u32 size);
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void adf_mstate_mgr_destroy(struct adf_mstate_mgr *mgr);
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void adf_mstate_mgr_init(struct adf_mstate_mgr *mgr, u8 *buf, u32 size);
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void adf_mstate_mgr_init_from_parent(struct adf_mstate_mgr *mgr,
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struct adf_mstate_mgr *p_mgr);
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void adf_mstate_mgr_init_from_psect(struct adf_mstate_mgr *mgr,
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struct adf_mstate_sect_h *p_sect);
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int adf_mstate_mgr_init_from_remote(struct adf_mstate_mgr *mgr,
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u8 *buf, u32 size,
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adf_mstate_preamble_checker checker,
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void *opaque);
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struct adf_mstate_preh *adf_mstate_preamble_add(struct adf_mstate_mgr *mgr);
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int adf_mstate_preamble_update(struct adf_mstate_mgr *mgr);
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u32 adf_mstate_state_size(struct adf_mstate_mgr *mgr);
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u32 adf_mstate_state_size_from_remote(struct adf_mstate_mgr *mgr);
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void adf_mstate_sect_update(struct adf_mstate_mgr *p_mgr,
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struct adf_mstate_mgr *curr_mgr,
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struct adf_mstate_sect_h *sect);
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struct adf_mstate_sect_h *adf_mstate_sect_add_vreg(struct adf_mstate_mgr *mgr,
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const char *id,
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struct adf_mstate_vreginfo *info);
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struct adf_mstate_sect_h *adf_mstate_sect_add(struct adf_mstate_mgr *mgr,
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const char *id,
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adf_mstate_populate populate,
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void *opaque);
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struct adf_mstate_sect_h *adf_mstate_sect_lookup(struct adf_mstate_mgr *mgr,
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const char *id,
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adf_mstate_action action,
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void *opaque);
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#endif
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