diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/crypto/qat/qat_common/adf_isr.c | 111 |
1 files changed, 71 insertions, 40 deletions
diff --git a/drivers/crypto/qat/qat_common/adf_isr.c b/drivers/crypto/qat/qat_common/adf_isr.c index 40593c9449a2..4ca482aa69f7 100644 --- a/drivers/crypto/qat/qat_common/adf_isr.c +++ b/drivers/crypto/qat/qat_common/adf_isr.c @@ -54,52 +54,83 @@ static irqreturn_t adf_msix_isr_bundle(int irq, void *bank_ptr) return IRQ_HANDLED; } -static irqreturn_t adf_msix_isr_ae(int irq, void *dev_ptr) +#ifdef CONFIG_PCI_IOV +void adf_enable_vf2pf_interrupts(struct adf_accel_dev *accel_dev, u32 vf_mask) { - struct adf_accel_dev *accel_dev = dev_ptr; + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + unsigned long flags; -#ifdef CONFIG_PCI_IOV - /* If SR-IOV is enabled (vf_info is non-NULL), check for VF->PF ints */ - if (accel_dev->pf.vf_info) { - struct adf_hw_device_data *hw_data = accel_dev->hw_device; - struct adf_bar *pmisc = - &GET_BARS(accel_dev)[hw_data->get_misc_bar_id(hw_data)]; - void __iomem *pmisc_addr = pmisc->virt_addr; - unsigned long vf_mask; - - /* Get the interrupt sources triggered by VFs */ - vf_mask = hw_data->get_vf2pf_sources(pmisc_addr); - - if (vf_mask) { - struct adf_accel_vf_info *vf_info; - bool irq_handled = false; - int i; - - /* Disable VF2PF interrupts for VFs with pending ints */ - adf_disable_vf2pf_interrupts_irq(accel_dev, vf_mask); - - /* - * Handle VF2PF interrupt unless the VF is malicious and - * is attempting to flood the host OS with VF2PF interrupts. - */ - for_each_set_bit(i, &vf_mask, ADF_MAX_NUM_VFS) { - vf_info = accel_dev->pf.vf_info + i; - - if (!__ratelimit(&vf_info->vf2pf_ratelimit)) { - dev_info(&GET_DEV(accel_dev), - "Too many ints from VF%d\n", - vf_info->vf_nr + 1); - continue; - } - - adf_schedule_vf2pf_handler(vf_info); - irq_handled = true; + spin_lock_irqsave(&accel_dev->pf.vf2pf_ints_lock, flags); + GET_PFVF_OPS(accel_dev)->enable_vf2pf_interrupts(pmisc_addr, vf_mask); + spin_unlock_irqrestore(&accel_dev->pf.vf2pf_ints_lock, flags); +} + +void adf_disable_vf2pf_interrupts(struct adf_accel_dev *accel_dev, u32 vf_mask) +{ + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + unsigned long flags; + + spin_lock_irqsave(&accel_dev->pf.vf2pf_ints_lock, flags); + GET_PFVF_OPS(accel_dev)->disable_vf2pf_interrupts(pmisc_addr, vf_mask); + spin_unlock_irqrestore(&accel_dev->pf.vf2pf_ints_lock, flags); +} + +static void adf_disable_vf2pf_interrupts_irq(struct adf_accel_dev *accel_dev, + u32 vf_mask) +{ + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + + spin_lock(&accel_dev->pf.vf2pf_ints_lock); + GET_PFVF_OPS(accel_dev)->disable_vf2pf_interrupts(pmisc_addr, vf_mask); + spin_unlock(&accel_dev->pf.vf2pf_ints_lock); +} + +static bool adf_handle_vf2pf_int(struct adf_accel_dev *accel_dev) +{ + void __iomem *pmisc_addr = adf_get_pmisc_base(accel_dev); + bool irq_handled = false; + unsigned long vf_mask; + + /* Get the interrupt sources triggered by VFs */ + vf_mask = GET_PFVF_OPS(accel_dev)->get_vf2pf_sources(pmisc_addr); + + if (vf_mask) { + struct adf_accel_vf_info *vf_info; + int i; + + /* Disable VF2PF interrupts for VFs with pending ints */ + adf_disable_vf2pf_interrupts_irq(accel_dev, vf_mask); + + /* + * Handle VF2PF interrupt unless the VF is malicious and + * is attempting to flood the host OS with VF2PF interrupts. + */ + for_each_set_bit(i, &vf_mask, ADF_MAX_NUM_VFS) { + vf_info = accel_dev->pf.vf_info + i; + + if (!__ratelimit(&vf_info->vf2pf_ratelimit)) { + dev_info(&GET_DEV(accel_dev), + "Too many ints from VF%d\n", + vf_info->vf_nr); + continue; } - if (irq_handled) - return IRQ_HANDLED; + adf_schedule_vf2pf_handler(vf_info); + irq_handled = true; } } + return irq_handled; +} +#endif /* CONFIG_PCI_IOV */ + +static irqreturn_t adf_msix_isr_ae(int irq, void *dev_ptr) +{ + struct adf_accel_dev *accel_dev = dev_ptr; + +#ifdef CONFIG_PCI_IOV + /* If SR-IOV is enabled (vf_info is non-NULL), check for VF->PF ints */ + if (accel_dev->pf.vf_info && adf_handle_vf2pf_int(accel_dev)) + return IRQ_HANDLED; #endif /* CONFIG_PCI_IOV */ dev_dbg(&GET_DEV(accel_dev), "qat_dev%d spurious AE interrupt\n", |