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crypto: qat - add interface for live migration

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Extend the driver with a new interface to be used for VF live migration.
This allows to create and destroy a qat_mig_dev object that contains
a set of methods to allow to save and restore the state of QAT VF.
This interface will be used by the qat-vfio-pci module.

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>
This commit is contained in:
Xin Zeng
2024-03-06 21:58:53 +08:00
committed by Herbert Xu
parent bbfdde7d19
commit 0fce55e533
5 changed files with 189 additions and 1 deletions
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17
drivers/crypto/intel/qat/qat_common/adf_accel_devices.h
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@@ -9,6 +9,7 @@
#include <linux/pci.h>
#include <linux/ratelimit.h>
#include <linux/types.h>
#include <linux/qat/qat_mig_dev.h>
#include "adf_cfg_common.h"
#include "adf_rl.h"
#include "adf_telemetry.h"
@@ -258,6 +259,20 @@ struct adf_dc_ops {
void (*build_deflate_ctx)(void *ctx);
};
struct qat_migdev_ops {
int (*init)(struct qat_mig_dev *mdev);
void (*cleanup)(struct qat_mig_dev *mdev);
void (*reset)(struct qat_mig_dev *mdev);
int (*open)(struct qat_mig_dev *mdev);
void (*close)(struct qat_mig_dev *mdev);
int (*suspend)(struct qat_mig_dev *mdev);
int (*resume)(struct qat_mig_dev *mdev);
int (*save_state)(struct qat_mig_dev *mdev);
int (*save_setup)(struct qat_mig_dev *mdev);
int (*load_state)(struct qat_mig_dev *mdev);
int (*load_setup)(struct qat_mig_dev *mdev, int size);
};
struct adf_dev_err_mask {
u32 cppagentcmdpar_mask;
u32 parerr_ath_cph_mask;
@@ -325,6 +340,7 @@ struct adf_hw_device_data {
struct adf_dev_err_mask dev_err_mask;
struct adf_rl_hw_data rl_data;
struct adf_tl_hw_data tl_data;
struct qat_migdev_ops vfmig_ops;
const char *fw_name;
const char *fw_mmp_name;
u32 fuses;
@@ -381,6 +397,7 @@ struct adf_hw_device_data {
#define GET_CSR_OPS(accel_dev) (&(accel_dev)->hw_device->csr_ops)
#define GET_PFVF_OPS(accel_dev) (&(accel_dev)->hw_device->pfvf_ops)
#define GET_DC_OPS(accel_dev) (&(accel_dev)->hw_device->dc_ops)
#define GET_VFMIG_OPS(accel_dev) (&(accel_dev)->hw_device->vfmig_ops)
#define GET_TL_DATA(accel_dev) GET_HW_DATA(accel_dev)->tl_data
#define accel_to_pci_dev(accel_ptr) accel_ptr->accel_pci_dev.pci_dev