diff options
| author | Giovanni Cabiddu <giovanni.cabiddu@intel.com> | 2022-06-27 09:36:49 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-07-08 15:15:59 +0800 |
| commit | 5ee52118ac1481dd8a8f7e6a9bfe6ee05ac6ec92 (patch) | |
| tree | 4fe54c5090c0414477cf296154ee7a13c812892f /drivers/crypto/qat/qat_4xxx | |
| parent | fac76f2260893dde5aa05bb693b4c13e8ed0454b (diff) | |
| download | linux-5ee52118ac1481dd8a8f7e6a9bfe6ee05ac6ec92.tar.gz | |
crypto: qat - expose device state through sysfs for 4xxx
Expose the device state through an attribute in sysfs and allow to
change it. This is to stop and shutdown a QAT device in order to change
its configuration.
The state attribute has been added to a newly created `qat` attribute
group which will contain all _QAT specific_ attributes.
The logic that implements the sysfs entries is part of a new file,
adf_sysfs.c. This exposes an entry point to allow the driver to create
attributes.
The function that creates the sysfs attributes is called from the probe
function of the driver and not in the state machine init function to
allow the change of states even if the device is in the down state.
In order to restore the device configuration between a transition from
down to up, the function that configures the devices has been abstracted
into the HW data structure.
The `state` attribute is only exposed for qat_4xxx devices.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Co-developed-by: Tomasz Kowallik <tomaszx.kowalik@intel.com>
Signed-off-by: Tomasz Kowallik <tomaszx.kowalik@intel.com>
Reviewed-by: Adam Guerin <adam.guerin@intel.com>
Reviewed-by: Fiona Trahe <fiona.trahe@intel.com>
Reviewed-by: Wojciech Ziemba <wojciech.ziemba@intel.com>
Reviewed-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/qat/qat_4xxx')
| -rw-r--r-- | drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c | 1 | ||||
| -rw-r--r-- | drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.h | 1 | ||||
| -rw-r--r-- | drivers/crypto/qat/qat_4xxx/adf_drv.c | 6 |
3 files changed, 7 insertions, 1 deletions
diff --git a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c index fb5970a68484..fda5f699ff57 100644 --- a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c +++ b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.c @@ -357,6 +357,7 @@ void adf_init_hw_data_4xxx(struct adf_hw_device_data *hw_data) hw_data->ring_pair_reset = adf_gen4_ring_pair_reset; hw_data->enable_pm = adf_gen4_enable_pm; hw_data->handle_pm_interrupt = adf_gen4_handle_pm_interrupt; + hw_data->dev_config = adf_crypto_dev_config; adf_gen4_init_hw_csr_ops(&hw_data->csr_ops); adf_gen4_init_pf_pfvf_ops(&hw_data->pfvf_ops); diff --git a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.h b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.h index 1034752845ca..9d49248931f6 100644 --- a/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.h +++ b/drivers/crypto/qat/qat_4xxx/adf_4xxx_hw_data.h @@ -70,5 +70,6 @@ enum icp_qat_4xxx_slice_mask { void adf_init_hw_data_4xxx(struct adf_hw_device_data *hw_data); void adf_clean_hw_data_4xxx(struct adf_hw_device_data *hw_data); +int adf_crypto_dev_config(struct adf_accel_dev *accel_dev); #endif diff --git a/drivers/crypto/qat/qat_4xxx/adf_drv.c b/drivers/crypto/qat/qat_4xxx/adf_drv.c index 181fa1c8b3c7..2f212561acc4 100644 --- a/drivers/crypto/qat/qat_4xxx/adf_drv.c +++ b/drivers/crypto/qat/qat_4xxx/adf_drv.c @@ -53,7 +53,7 @@ static int adf_cfg_dev_init(struct adf_accel_dev *accel_dev) return 0; } -static int adf_crypto_dev_config(struct adf_accel_dev *accel_dev) +int adf_crypto_dev_config(struct adf_accel_dev *accel_dev) { char key[ADF_CFG_MAX_KEY_LEN_IN_BYTES]; int banks = GET_MAX_BANKS(accel_dev); @@ -289,6 +289,10 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto out_err_disable_aer; } + ret = adf_sysfs_init(accel_dev); + if (ret) + goto out_err_disable_aer; + ret = adf_crypto_dev_config(accel_dev); if (ret) goto out_err_disable_aer; |