diff mbox series

[v4,1/3] PCI/AER: Factor out interrupt toggling into helpers

Message ID 20230424055249.460381-1-kai.heng.feng@canonical.com (mailing list archive)
State Superseded
Delegated to: Bjorn Helgaas
Headers show
Series [v4,1/3] PCI/AER: Factor out interrupt toggling into helpers | expand

Commit Message

Kai-Heng Feng April 24, 2023, 5:52 a.m. UTC 
There are many places that enable and disable AER interrput, so move
them into helpers.

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
---
 drivers/pci/pcie/aer.c | 45 +++++++++++++++++++++++++-----------------
 1 file changed, 27 insertions(+), 18 deletions(-)

Comments

Jonathan Cameron May 5, 2023, 3:37 p.m. UTC | #1 
On Mon, 24 Apr 2023 13:52:47 +0800
Kai-Heng Feng <kai.heng.feng@canonical.com> wrote:

> There are many places that enable and disable AER interrput, so move

interrupt

> them into helpers.

Otherwise looks like a good clean up to me.
FWIW
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

> 
> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
> ---
>  drivers/pci/pcie/aer.c | 45 +++++++++++++++++++++++++-----------------
>  1 file changed, 27 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
> index f6c24ded134c..1420e1f27105 100644
> --- a/drivers/pci/pcie/aer.c
> +++ b/drivers/pci/pcie/aer.c
> @@ -1227,6 +1227,28 @@ static irqreturn_t aer_irq(int irq, void *context)
>  	return IRQ_WAKE_THREAD;
>  }
>  
> +static void aer_enable_irq(struct pci_dev *pdev)
> +{
> +	int aer = pdev->aer_cap;
> +	u32 reg32;
> +
> +	/* Enable Root Port's interrupt in response to error messages */
> +	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> +	reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
> +	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
> +}
> +
> +static void aer_disable_irq(struct pci_dev *pdev)
> +{
> +	int aer = pdev->aer_cap;
> +	u32 reg32;
> +
> +	/* Disable Root's interrupt in response to error messages */
> +	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> +	reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
> +	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
> +}
> +
>  /**
>   * aer_enable_rootport - enable Root Port's interrupts when receiving messages
>   * @rpc: pointer to a Root Port data structure
> @@ -1256,10 +1278,7 @@ static void aer_enable_rootport(struct aer_rpc *rpc)
>  	pci_read_config_dword(pdev, aer + PCI_ERR_UNCOR_STATUS, &reg32);
>  	pci_write_config_dword(pdev, aer + PCI_ERR_UNCOR_STATUS, reg32);
>  
> -	/* Enable Root Port's interrupt in response to error messages */
> -	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> -	reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
> -	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
> +	aer_enable_irq(pdev);
>  }
>  
>  /**
> @@ -1274,10 +1293,7 @@ static void aer_disable_rootport(struct aer_rpc *rpc)
>  	int aer = pdev->aer_cap;
>  	u32 reg32;
>  
> -	/* Disable Root's interrupt in response to error messages */
> -	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> -	reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
> -	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
> +	aer_disable_irq(pdev);
>  
>  	/* Clear Root's error status reg */
>  	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_STATUS, &reg32);
> @@ -1372,12 +1388,8 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
>  	 */
>  	aer = root ? root->aer_cap : 0;
>  
> -	if ((host->native_aer || pcie_ports_native) && aer) {
> -		/* Disable Root's interrupt in response to error messages */
> -		pci_read_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> -		reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
> -		pci_write_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, reg32);
> -	}
> +	if ((host->native_aer || pcie_ports_native) && aer)
> +		aer_disable_irq(root);
>  
>  	if (type == PCI_EXP_TYPE_RC_EC || type == PCI_EXP_TYPE_RC_END) {
>  		rc = pcie_reset_flr(dev, PCI_RESET_DO_RESET);
> @@ -1396,10 +1408,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
>  		pci_read_config_dword(root, aer + PCI_ERR_ROOT_STATUS, &reg32);
>  		pci_write_config_dword(root, aer + PCI_ERR_ROOT_STATUS, reg32);
>  
> -		/* Enable Root Port's interrupt in response to error messages */
> -		pci_read_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> -		reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
> -		pci_write_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, reg32);
> +		aer_enable_irq(root);
>  	}
>  
>  	return rc ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
Kai-Heng Feng May 11, 2023, 12:48 p.m. UTC | #2 
On Fri, May 5, 2023 at 11:37 PM Jonathan Cameron
<Jonathan.Cameron@huawei.com> wrote:
>
> On Mon, 24 Apr 2023 13:52:47 +0800
> Kai-Heng Feng <kai.heng.feng@canonical.com> wrote:
>
> > There are many places that enable and disable AER interrput, so move
>
> interrupt

Thanks, will correct that in next revision.

Kai-Heng

>
> > them into helpers.
>
> Otherwise looks like a good clean up to me.
> FWIW
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
>
> >
> > Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> > Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> > Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
> > ---
> >  drivers/pci/pcie/aer.c | 45 +++++++++++++++++++++++++-----------------
> >  1 file changed, 27 insertions(+), 18 deletions(-)
> >
> > diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
> > index f6c24ded134c..1420e1f27105 100644
> > --- a/drivers/pci/pcie/aer.c
> > +++ b/drivers/pci/pcie/aer.c
> > @@ -1227,6 +1227,28 @@ static irqreturn_t aer_irq(int irq, void *context)
> >       return IRQ_WAKE_THREAD;
> >  }
> >
> > +static void aer_enable_irq(struct pci_dev *pdev)
> > +{
> > +     int aer = pdev->aer_cap;
> > +     u32 reg32;
> > +
> > +     /* Enable Root Port's interrupt in response to error messages */
> > +     pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> > +     reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
> > +     pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
> > +}
> > +
> > +static void aer_disable_irq(struct pci_dev *pdev)
> > +{
> > +     int aer = pdev->aer_cap;
> > +     u32 reg32;
> > +
> > +     /* Disable Root's interrupt in response to error messages */
> > +     pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> > +     reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
> > +     pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
> > +}
> > +
> >  /**
> >   * aer_enable_rootport - enable Root Port's interrupts when receiving messages
> >   * @rpc: pointer to a Root Port data structure
> > @@ -1256,10 +1278,7 @@ static void aer_enable_rootport(struct aer_rpc *rpc)
> >       pci_read_config_dword(pdev, aer + PCI_ERR_UNCOR_STATUS, &reg32);
> >       pci_write_config_dword(pdev, aer + PCI_ERR_UNCOR_STATUS, reg32);
> >
> > -     /* Enable Root Port's interrupt in response to error messages */
> > -     pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> > -     reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
> > -     pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
> > +     aer_enable_irq(pdev);
> >  }
> >
> >  /**
> > @@ -1274,10 +1293,7 @@ static void aer_disable_rootport(struct aer_rpc *rpc)
> >       int aer = pdev->aer_cap;
> >       u32 reg32;
> >
> > -     /* Disable Root's interrupt in response to error messages */
> > -     pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> > -     reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
> > -     pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
> > +     aer_disable_irq(pdev);
> >
> >       /* Clear Root's error status reg */
> >       pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_STATUS, &reg32);
> > @@ -1372,12 +1388,8 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
> >        */
> >       aer = root ? root->aer_cap : 0;
> >
> > -     if ((host->native_aer || pcie_ports_native) && aer) {
> > -             /* Disable Root's interrupt in response to error messages */
> > -             pci_read_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> > -             reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
> > -             pci_write_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, reg32);
> > -     }
> > +     if ((host->native_aer || pcie_ports_native) && aer)
> > +             aer_disable_irq(root);
> >
> >       if (type == PCI_EXP_TYPE_RC_EC || type == PCI_EXP_TYPE_RC_END) {
> >               rc = pcie_reset_flr(dev, PCI_RESET_DO_RESET);
> > @@ -1396,10 +1408,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
> >               pci_read_config_dword(root, aer + PCI_ERR_ROOT_STATUS, &reg32);
> >               pci_write_config_dword(root, aer + PCI_ERR_ROOT_STATUS, reg32);
> >
> > -             /* Enable Root Port's interrupt in response to error messages */
> > -             pci_read_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, &reg32);
> > -             reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
> > -             pci_write_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, reg32);
> > +             aer_enable_irq(root);
> >       }
> >
> >       return rc ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
>
diff mbox series

Patch

diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index f6c24ded134c..1420e1f27105 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -1227,6 +1227,28 @@  static irqreturn_t aer_irq(int irq, void *context)
 	return IRQ_WAKE_THREAD;
 }
 
+static void aer_enable_irq(struct pci_dev *pdev)
+{
+	int aer = pdev->aer_cap;
+	u32 reg32;
+
+	/* Enable Root Port's interrupt in response to error messages */
+	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
+	reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
+	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
+}
+
+static void aer_disable_irq(struct pci_dev *pdev)
+{
+	int aer = pdev->aer_cap;
+	u32 reg32;
+
+	/* Disable Root's interrupt in response to error messages */
+	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
+	reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
+	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
+}
+
 /**
  * aer_enable_rootport - enable Root Port's interrupts when receiving messages
  * @rpc: pointer to a Root Port data structure
@@ -1256,10 +1278,7 @@  static void aer_enable_rootport(struct aer_rpc *rpc)
 	pci_read_config_dword(pdev, aer + PCI_ERR_UNCOR_STATUS, &reg32);
 	pci_write_config_dword(pdev, aer + PCI_ERR_UNCOR_STATUS, reg32);
 
-	/* Enable Root Port's interrupt in response to error messages */
-	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
-	reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
-	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
+	aer_enable_irq(pdev);
 }
 
 /**
@@ -1274,10 +1293,7 @@  static void aer_disable_rootport(struct aer_rpc *rpc)
 	int aer = pdev->aer_cap;
 	u32 reg32;
 
-	/* Disable Root's interrupt in response to error messages */
-	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, &reg32);
-	reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
-	pci_write_config_dword(pdev, aer + PCI_ERR_ROOT_COMMAND, reg32);
+	aer_disable_irq(pdev);
 
 	/* Clear Root's error status reg */
 	pci_read_config_dword(pdev, aer + PCI_ERR_ROOT_STATUS, &reg32);
@@ -1372,12 +1388,8 @@  static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
 	 */
 	aer = root ? root->aer_cap : 0;
 
-	if ((host->native_aer || pcie_ports_native) && aer) {
-		/* Disable Root's interrupt in response to error messages */
-		pci_read_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, &reg32);
-		reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK;
-		pci_write_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, reg32);
-	}
+	if ((host->native_aer || pcie_ports_native) && aer)
+		aer_disable_irq(root);
 
 	if (type == PCI_EXP_TYPE_RC_EC || type == PCI_EXP_TYPE_RC_END) {
 		rc = pcie_reset_flr(dev, PCI_RESET_DO_RESET);
@@ -1396,10 +1408,7 @@  static pci_ers_result_t aer_root_reset(struct pci_dev *dev)
 		pci_read_config_dword(root, aer + PCI_ERR_ROOT_STATUS, &reg32);
 		pci_write_config_dword(root, aer + PCI_ERR_ROOT_STATUS, reg32);
 
-		/* Enable Root Port's interrupt in response to error messages */
-		pci_read_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, &reg32);
-		reg32 |= ROOT_PORT_INTR_ON_MESG_MASK;
-		pci_write_config_dword(root, aer + PCI_ERR_ROOT_COMMAND, reg32);
+		aer_enable_irq(root);
 	}
 
 	return rc ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;