diff options
Diffstat (limited to 'drivers/crypto/qat/qat_common/adf_pf2vf_msg.c')
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_pf2vf_msg.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/crypto/qat/qat_common/adf_pf2vf_msg.c b/drivers/crypto/qat/qat_common/adf_pf2vf_msg.c index c5790cd0b91b..5fdbad809343 100644 --- a/drivers/crypto/qat/qat_common/adf_pf2vf_msg.c +++ b/drivers/crypto/qat/qat_common/adf_pf2vf_msg.c @@ -256,6 +256,108 @@ int adf_iov_putmsg(struct adf_accel_dev *accel_dev, u32 msg, u8 vf_nr) } EXPORT_SYMBOL_GPL(adf_iov_putmsg); +void adf_vf2pf_req_hndl(struct adf_accel_vf_info *vf_info) +{ + struct adf_accel_dev *accel_dev = vf_info->accel_dev; + struct adf_hw_device_data *hw_data = accel_dev->hw_device; + int bar_id = hw_data->get_misc_bar_id(hw_data); + struct adf_bar *pmisc = &GET_BARS(accel_dev)[bar_id]; + void __iomem *pmisc_addr = pmisc->virt_addr; + u32 msg, resp = 0, vf_nr = vf_info->vf_nr; + + /* Read message from the VF */ + msg = ADF_CSR_RD(pmisc_addr, hw_data->get_pf2vf_offset(vf_nr)); + + /* To ACK, clear the VF2PFINT bit */ + msg &= ~ADF_VF2PF_INT; + ADF_CSR_WR(pmisc_addr, hw_data->get_pf2vf_offset(vf_nr), msg); + + if (!(msg & ADF_VF2PF_MSGORIGIN_SYSTEM)) + /* Ignore legacy non-system (non-kernel) VF2PF messages */ + goto err; + + switch ((msg & ADF_VF2PF_MSGTYPE_MASK) >> ADF_VF2PF_MSGTYPE_SHIFT) { + case ADF_VF2PF_MSGTYPE_COMPAT_VER_REQ: + { + u8 vf_compat_ver = msg >> ADF_VF2PF_COMPAT_VER_REQ_SHIFT; + + resp = (ADF_PF2VF_MSGORIGIN_SYSTEM | + (ADF_PF2VF_MSGTYPE_VERSION_RESP << + ADF_PF2VF_MSGTYPE_SHIFT) | + (ADF_PFVF_COMPATIBILITY_VERSION << + ADF_PF2VF_VERSION_RESP_VERS_SHIFT)); + + dev_dbg(&GET_DEV(accel_dev), + "Compatibility Version Request from VF%d vers=%u\n", + vf_nr + 1, vf_compat_ver); + + if (vf_compat_ver < hw_data->min_iov_compat_ver) { + dev_err(&GET_DEV(accel_dev), + "VF (vers %d) incompatible with PF (vers %d)\n", + vf_compat_ver, ADF_PFVF_COMPATIBILITY_VERSION); + resp |= ADF_PF2VF_VF_INCOMPATIBLE << + ADF_PF2VF_VERSION_RESP_RESULT_SHIFT; + } else if (vf_compat_ver > ADF_PFVF_COMPATIBILITY_VERSION) { + dev_err(&GET_DEV(accel_dev), + "VF (vers %d) compat with PF (vers %d) unkn.\n", + vf_compat_ver, ADF_PFVF_COMPATIBILITY_VERSION); + resp |= ADF_PF2VF_VF_COMPAT_UNKNOWN << + ADF_PF2VF_VERSION_RESP_RESULT_SHIFT; + } else { + dev_dbg(&GET_DEV(accel_dev), + "VF (vers %d) compatible with PF (vers %d)\n", + vf_compat_ver, ADF_PFVF_COMPATIBILITY_VERSION); + resp |= ADF_PF2VF_VF_COMPATIBLE << + ADF_PF2VF_VERSION_RESP_RESULT_SHIFT; + } + } + break; + case ADF_VF2PF_MSGTYPE_VERSION_REQ: + dev_dbg(&GET_DEV(accel_dev), + "Legacy VersionRequest received from VF%d 0x%x\n", + vf_nr + 1, msg); + resp = (ADF_PF2VF_MSGORIGIN_SYSTEM | + (ADF_PF2VF_MSGTYPE_VERSION_RESP << + ADF_PF2VF_MSGTYPE_SHIFT) | + (ADF_PFVF_COMPATIBILITY_VERSION << + ADF_PF2VF_VERSION_RESP_VERS_SHIFT)); + resp |= ADF_PF2VF_VF_COMPATIBLE << + ADF_PF2VF_VERSION_RESP_RESULT_SHIFT; + /* Set legacy major and minor version num */ + resp |= 1 << ADF_PF2VF_MAJORVERSION_SHIFT | + 1 << ADF_PF2VF_MINORVERSION_SHIFT; + break; + case ADF_VF2PF_MSGTYPE_INIT: + { + dev_dbg(&GET_DEV(accel_dev), + "Init message received from VF%d 0x%x\n", + vf_nr + 1, msg); + vf_info->init = true; + } + break; + case ADF_VF2PF_MSGTYPE_SHUTDOWN: + { + dev_dbg(&GET_DEV(accel_dev), + "Shutdown message received from VF%d 0x%x\n", + vf_nr + 1, msg); + vf_info->init = false; + } + break; + default: + goto err; + } + + if (resp && adf_iov_putmsg(accel_dev, resp, vf_nr)) + dev_err(&GET_DEV(accel_dev), "Failed to send response to VF\n"); + + /* re-enable interrupt on PF from this VF */ + adf_enable_vf2pf_interrupts(accel_dev, (1 << vf_nr)); + return; +err: + dev_dbg(&GET_DEV(accel_dev), "Unknown message from VF%d (0x%x);\n", + vf_nr + 1, msg); +} + void adf_pf2vf_notify_restarting(struct adf_accel_dev *accel_dev) { struct adf_accel_vf_info *vf; |