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crypto: qat - Use alternative reset methods depending on the specific device

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Different product families will use FLR or SBR.
Virtual Function devices have no reset method.

Signed-off-by: Conor McLoughlin <conor.mcloughlin@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Conor McLoughlin 2016-07-04 16:26:00 +01:00 committed by Herbert Xu
parent 8d63a6d53b
commit e24860f2a6
6 changed files with 43 additions and 9 deletions
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1
drivers/crypto/qat/qat_c3xxx/adf_c3xxx_hw_data.c
View file

@ -229,6 +229,7 @@ void adf_init_hw_data_c3xxx(struct adf_hw_device_data *hw_data)
hw_data->get_arb_mapping = adf_get_arbiter_mapping;
hw_data->enable_ints = adf_enable_ints;
hw_data->enable_vf2pf_comms = adf_pf_enable_vf2pf_comms;
hw_data->reset_device = adf_reset_flr;
hw_data->min_iov_compat_ver = ADF_PFVF_COMPATIBILITY_VERSION;
}

1
drivers/crypto/qat/qat_c62x/adf_c62x_hw_data.c
View file

@ -239,6 +239,7 @@ void adf_init_hw_data_c62x(struct adf_hw_device_data *hw_data)
hw_data->get_arb_mapping = adf_get_arbiter_mapping;
hw_data->enable_ints = adf_enable_ints;
hw_data->enable_vf2pf_comms = adf_pf_enable_vf2pf_comms;
hw_data->reset_device = adf_reset_flr;
hw_data->min_iov_compat_ver = ADF_PFVF_COMPATIBILITY_VERSION;
}

1
drivers/crypto/qat/qat_common/adf_accel_devices.h
View file

@ -176,6 +176,7 @@ struct adf_hw_device_data {
void (*disable_iov)(struct adf_accel_dev *accel_dev);
void (*enable_ints)(struct adf_accel_dev *accel_dev);
int (*enable_vf2pf_comms)(struct adf_accel_dev *accel_dev);
void (*reset_device)(struct adf_accel_dev *accel_dev);
const char *fw_name;
const char *fw_mmp_name;
uint32_t fuses;

46
drivers/crypto/qat/qat_common/adf_aer.c
View file

@ -82,18 +82,12 @@ struct adf_reset_dev_data {
struct work_struct reset_work;
};
void adf_dev_restore(struct adf_accel_dev *accel_dev)
void adf_reset_sbr(struct adf_accel_dev *accel_dev)
{
struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
struct pci_dev *parent = pdev->bus->self;
uint16_t bridge_ctl = 0;
if (accel_dev->is_vf)
return;
dev_info(&GET_DEV(accel_dev), "Resetting device qat_dev%d\n",
accel_dev->accel_id);
if (!parent)
parent = pdev;
@ -101,6 +95,8 @@ void adf_dev_restore(struct adf_accel_dev *accel_dev)
dev_info(&GET_DEV(accel_dev),
"Transaction still in progress. Proceeding\n");
dev_info(&GET_DEV(accel_dev), "Secondary bus reset\n");
pci_read_config_word(parent, PCI_BRIDGE_CONTROL, &bridge_ctl);
bridge_ctl |= PCI_BRIDGE_CTL_BUS_RESET;
pci_write_config_word(parent, PCI_BRIDGE_CONTROL, bridge_ctl);
@ -108,8 +104,40 @@ void adf_dev_restore(struct adf_accel_dev *accel_dev)
bridge_ctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
pci_write_config_word(parent, PCI_BRIDGE_CONTROL, bridge_ctl);
msleep(100);
pci_restore_state(pdev);
pci_save_state(pdev);
}
EXPORT_SYMBOL_GPL(adf_reset_sbr);
void adf_reset_flr(struct adf_accel_dev *accel_dev)
{
struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
u16 control = 0;
int pos = 0;
dev_info(&GET_DEV(accel_dev), "Function level reset\n");
pos = pci_pcie_cap(pdev);
if (!pos) {
dev_err(&GET_DEV(accel_dev), "Restart device failed\n");
return;
}
pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &control);
control |= PCI_EXP_DEVCTL_BCR_FLR;
pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, control);
msleep(100);
}
EXPORT_SYMBOL_GPL(adf_reset_flr);
void adf_dev_restore(struct adf_accel_dev *accel_dev)
{
struct adf_hw_device_data *hw_device = accel_dev->hw_device;
struct pci_dev *pdev = accel_to_pci_dev(accel_dev);
if (hw_device->reset_device) {
dev_info(&GET_DEV(accel_dev), "Resetting device qat_dev%d\n",
accel_dev->accel_id);
hw_device->reset_device(accel_dev);
pci_restore_state(pdev);
pci_save_state(pdev);
}
}
static void adf_device_reset_worker(struct work_struct *work)

2
drivers/crypto/qat/qat_common/adf_common_drv.h
View file

@ -141,6 +141,8 @@ int adf_ae_stop(struct adf_accel_dev *accel_dev);
int adf_enable_aer(struct adf_accel_dev *accel_dev, struct pci_driver *adf);
void adf_disable_aer(struct adf_accel_dev *accel_dev);
void adf_reset_sbr(struct adf_accel_dev *accel_dev);
void adf_reset_flr(struct adf_accel_dev *accel_dev);
void adf_dev_restore(struct adf_accel_dev *accel_dev);
int adf_init_aer(void);
void adf_exit_aer(void);

1
drivers/crypto/qat/qat_dh895xcc/adf_dh895xcc_hw_data.c
View file

@ -252,6 +252,7 @@ void adf_init_hw_data_dh895xcc(struct adf_hw_device_data *hw_data)
hw_data->get_arb_mapping = adf_get_arbiter_mapping;
hw_data->enable_ints = adf_enable_ints;
hw_data->enable_vf2pf_comms = adf_pf_enable_vf2pf_comms;
hw_data->reset_device = adf_reset_sbr;
hw_data->min_iov_compat_ver = ADF_PFVF_COMPATIBILITY_VERSION;
}