The legacy PCI interrupt lines need to be enabled using PCIE_APP_IRNEN
bits 13 (INTA), 14 (INTB), 15 (INTC) and 16 (INTD). The old code however
was taking (for example) "13" as raw value instead of taking BIT(13).
Define the legacy PCI interrupt bits using the BIT() macro and then use
these in PCIE_APP_IRN_INT.
Fixes: ed22aaaede44 ("PCI: dwc: intel: PCIe RC controller driver")
Signed-off-by: Martin Blumenstingl <[email protected]>
---
drivers/pci/controller/dwc/pcie-intel-gw.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c
index 0cedd1f95f37..ae96bfbb6c83 100644
--- a/drivers/pci/controller/dwc/pcie-intel-gw.c
+++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
@@ -39,6 +39,10 @@
#define PCIE_APP_IRN_PM_TO_ACK BIT(9)
#define PCIE_APP_IRN_LINK_AUTO_BW_STAT BIT(11)
#define PCIE_APP_IRN_BW_MGT BIT(12)
+#define PCIE_APP_IRN_INTA BIT(13)
+#define PCIE_APP_IRN_INTB BIT(14)
+#define PCIE_APP_IRN_INTC BIT(15)
+#define PCIE_APP_IRN_INTD BIT(16)
#define PCIE_APP_IRN_MSG_LTR BIT(18)
#define PCIE_APP_IRN_SYS_ERR_RC BIT(29)
#define PCIE_APP_INTX_OFST 12
@@ -48,10 +52,8 @@
PCIE_APP_IRN_RX_VDM_MSG | PCIE_APP_IRN_SYS_ERR_RC | \
PCIE_APP_IRN_PM_TO_ACK | PCIE_APP_IRN_MSG_LTR | \
PCIE_APP_IRN_BW_MGT | PCIE_APP_IRN_LINK_AUTO_BW_STAT | \
- (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTA) | \
- (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTB) | \
- (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTC) | \
- (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTD))
+ PCIE_APP_IRN_INTA | PCIE_APP_IRN_INTB | \
+ PCIE_APP_IRN_INTC | PCIE_APP_IRN_INTD)
#define BUS_IATU_OFFSET SZ_256M
#define RESET_INTERVAL_MS 100
--
2.30.0
On Wed, Jan 06, 2021 at 02:55:40PM +0100, Martin Blumenstingl wrote:
> The legacy PCI interrupt lines need to be enabled using PCIE_APP_IRNEN
> bits 13 (INTA), 14 (INTB), 15 (INTC) and 16 (INTD). The old code however
> was taking (for example) "13" as raw value instead of taking BIT(13).
> Define the legacy PCI interrupt bits using the BIT() macro and then use
> these in PCIE_APP_IRN_INT.
>
> Fixes: ed22aaaede44 ("PCI: dwc: intel: PCIe RC controller driver")
> Signed-off-by: Martin Blumenstingl <[email protected]>
> ---
> drivers/pci/controller/dwc/pcie-intel-gw.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c
> index 0cedd1f95f37..ae96bfbb6c83 100644
> --- a/drivers/pci/controller/dwc/pcie-intel-gw.c
> +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
> @@ -39,6 +39,10 @@
> #define PCIE_APP_IRN_PM_TO_ACK BIT(9)
> #define PCIE_APP_IRN_LINK_AUTO_BW_STAT BIT(11)
> #define PCIE_APP_IRN_BW_MGT BIT(12)
> +#define PCIE_APP_IRN_INTA BIT(13)
> +#define PCIE_APP_IRN_INTB BIT(14)
> +#define PCIE_APP_IRN_INTC BIT(15)
> +#define PCIE_APP_IRN_INTD BIT(16)
> #define PCIE_APP_IRN_MSG_LTR BIT(18)
> #define PCIE_APP_IRN_SYS_ERR_RC BIT(29)
> #define PCIE_APP_INTX_OFST 12
> @@ -48,10 +52,8 @@
> PCIE_APP_IRN_RX_VDM_MSG | PCIE_APP_IRN_SYS_ERR_RC | \
> PCIE_APP_IRN_PM_TO_ACK | PCIE_APP_IRN_MSG_LTR | \
> PCIE_APP_IRN_BW_MGT | PCIE_APP_IRN_LINK_AUTO_BW_STAT | \
> - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTA) | \
> - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTB) | \
> - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTC) | \
> - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTD))
> + PCIE_APP_IRN_INTA | PCIE_APP_IRN_INTB | \
> + PCIE_APP_IRN_INTC | PCIE_APP_IRN_INTD)
>
> #define BUS_IATU_OFFSET SZ_256M
> #define RESET_INTERVAL_MS 100
This looks like a significant bug - which in turn raises the question
on how well this driver has been tested.
Dilip, can you review and ACK asap please ?
Thanks,
Lorenzo
Hi Lorenzo,
On Tue, Mar 23, 2021 at 12:36 PM Lorenzo Pieralisi
<[email protected]> wrote:
>
> On Wed, Jan 06, 2021 at 02:55:40PM +0100, Martin Blumenstingl wrote:
> > The legacy PCI interrupt lines need to be enabled using PCIE_APP_IRNEN
> > bits 13 (INTA), 14 (INTB), 15 (INTC) and 16 (INTD). The old code however
> > was taking (for example) "13" as raw value instead of taking BIT(13).
> > Define the legacy PCI interrupt bits using the BIT() macro and then use
> > these in PCIE_APP_IRN_INT.
> >
> > Fixes: ed22aaaede44 ("PCI: dwc: intel: PCIe RC controller driver")
> > Signed-off-by: Martin Blumenstingl <[email protected]>
> > ---
> > drivers/pci/controller/dwc/pcie-intel-gw.c | 10 ++++++----
> > 1 file changed, 6 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c
> > index 0cedd1f95f37..ae96bfbb6c83 100644
> > --- a/drivers/pci/controller/dwc/pcie-intel-gw.c
> > +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
> > @@ -39,6 +39,10 @@
> > #define PCIE_APP_IRN_PM_TO_ACK BIT(9)
> > #define PCIE_APP_IRN_LINK_AUTO_BW_STAT BIT(11)
> > #define PCIE_APP_IRN_BW_MGT BIT(12)
> > +#define PCIE_APP_IRN_INTA BIT(13)
> > +#define PCIE_APP_IRN_INTB BIT(14)
> > +#define PCIE_APP_IRN_INTC BIT(15)
> > +#define PCIE_APP_IRN_INTD BIT(16)
> > #define PCIE_APP_IRN_MSG_LTR BIT(18)
> > #define PCIE_APP_IRN_SYS_ERR_RC BIT(29)
> > #define PCIE_APP_INTX_OFST 12
> > @@ -48,10 +52,8 @@
> > PCIE_APP_IRN_RX_VDM_MSG | PCIE_APP_IRN_SYS_ERR_RC | \
> > PCIE_APP_IRN_PM_TO_ACK | PCIE_APP_IRN_MSG_LTR | \
> > PCIE_APP_IRN_BW_MGT | PCIE_APP_IRN_LINK_AUTO_BW_STAT | \
> > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTA) | \
> > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTB) | \
> > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTC) | \
> > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTD))
> > + PCIE_APP_IRN_INTA | PCIE_APP_IRN_INTB | \
> > + PCIE_APP_IRN_INTC | PCIE_APP_IRN_INTD)
> >
> > #define BUS_IATU_OFFSET SZ_256M
> > #define RESET_INTERVAL_MS 100
>
> This looks like a significant bug - which in turn raises the question
> on how well this driver has been tested.
to give them the benefit of doubt: maybe only MSIs were tested
> Dilip, can you review and ACK asap please ?
From "Re: MaxLinear, please maintain your drivers was Re: [PATCH]
leds: lgm: fix gpiolib dependency" [0]:
> Please send any Lightning Mountain SoC related issues email to Rahul
> Tanwar ([email protected]) and I will ensure that I address the
> issues in a timely manner.
so I added [email protected] to this email
Best regards,
Martin
[0] https://lkml.org/lkml/2021/3/16/282
On 9/4/2021 4:40 am, Martin Blumenstingl wrote:
> This email was sent from outside of MaxLinear.
>
> Hi Lorenzo,
>
> On Tue, Mar 23, 2021 at 12:36 PM Lorenzo Pieralisi
> <[email protected]> wrote:
> >
> > On Wed, Jan 06, 2021 at 02:55:40PM +0100, Martin Blumenstingl wrote:
> > > The legacy PCI interrupt lines need to be enabled using PCIE_APP_IRNEN
> > > bits 13 (INTA), 14 (INTB), 15 (INTC) and 16 (INTD). The old code
> however
> > > was taking (for example) "13" as raw value instead of taking BIT(13).
> > > Define the legacy PCI interrupt bits using the BIT() macro and then use
> > > these in PCIE_APP_IRN_INT.
> > >
> > > Fixes: ed22aaaede44 ("PCI: dwc: intel: PCIe RC controller driver")
> > > Signed-off-by: Martin Blumenstingl <[email protected]>
> > > ---
> > > drivers/pci/controller/dwc/pcie-intel-gw.c | 10 ++++++----
> > > 1 file changed, 6 insertions(+), 4 deletions(-)
> > >
> > > diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c
> b/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > index 0cedd1f95f37..ae96bfbb6c83 100644
> > > --- a/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > @@ -39,6 +39,10 @@
> > > #define PCIE_APP_IRN_PM_TO_ACK BIT(9)
> > > #define PCIE_APP_IRN_LINK_AUTO_BW_STAT BIT(11)
> > > #define PCIE_APP_IRN_BW_MGT BIT(12)
> > > +#define PCIE_APP_IRN_INTA BIT(13)
> > > +#define PCIE_APP_IRN_INTB BIT(14)
> > > +#define PCIE_APP_IRN_INTC BIT(15)
> > > +#define PCIE_APP_IRN_INTD BIT(16)
> > > #define PCIE_APP_IRN_MSG_LTR BIT(18)
> > > #define PCIE_APP_IRN_SYS_ERR_RC BIT(29)
> > > #define PCIE_APP_INTX_OFST 12
> > > @@ -48,10 +52,8 @@
> > > PCIE_APP_IRN_RX_VDM_MSG | PCIE_APP_IRN_SYS_ERR_RC | \
> > > PCIE_APP_IRN_PM_TO_ACK | PCIE_APP_IRN_MSG_LTR | \
> > > PCIE_APP_IRN_BW_MGT | PCIE_APP_IRN_LINK_AUTO_BW_STAT | \
> > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTA) | \
> > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTB) | \
> > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTC) | \
> > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTD))
> > > + PCIE_APP_IRN_INTA | PCIE_APP_IRN_INTB | \
> > > + PCIE_APP_IRN_INTC | PCIE_APP_IRN_INTD)
> > >
> > > #define BUS_IATU_OFFSET SZ_256M
> > > #define RESET_INTERVAL_MS 100
> >
> > This looks like a significant bug - which in turn raises the question
> > on how well this driver has been tested.
> to give them the benefit of doubt: maybe only MSIs were tested
>
> > Dilip, can you review and ACK asap please ?
> From "Re: MaxLinear, please maintain your drivers was Re: [PATCH]
> leds: lgm: fix gpiolib dependency" [0]:
> > Please send any Lightning Mountain SoC related issues email to Rahul
> > Tanwar ([email protected]) and I will ensure that I address the
> > issues in a timely manner.
> so I added [email protected] to this email
>
>
> Best regards,
> Martin
>
>
> [0] https://lkml.org/lkml/2021/3/16/282
> <https://lkml.org/lkml/2021/3/16/282>
Dilip has left the org. So not sure how exactly he tested it (maybe only
MSIs). But i have confirmed it to be a bug. Thanks Martin for fixing it.
Acked-by: Rahul Tanwar <[email protected]>
Regards,
Rahul
On Fri, Apr 09, 2021 at 10:17:12AM +0000, Rahul Tanwar wrote:
> On 9/4/2021 4:40 am, Martin Blumenstingl wrote:
> > This email was sent from outside of MaxLinear.
> >
> > Hi Lorenzo,
> >
> > On Tue, Mar 23, 2021 at 12:36 PM Lorenzo Pieralisi
> > <[email protected]> wrote:
> > >
> > > On Wed, Jan 06, 2021 at 02:55:40PM +0100, Martin Blumenstingl wrote:
> > > > The legacy PCI interrupt lines need to be enabled using PCIE_APP_IRNEN
> > > > bits 13 (INTA), 14 (INTB), 15 (INTC) and 16 (INTD). The old code
> > however
> > > > was taking (for example) "13" as raw value instead of taking BIT(13).
> > > > Define the legacy PCI interrupt bits using the BIT() macro and then use
> > > > these in PCIE_APP_IRN_INT.
> > > >
> > > > Fixes: ed22aaaede44 ("PCI: dwc: intel: PCIe RC controller driver")
> > > > Signed-off-by: Martin Blumenstingl <[email protected]>
> > > > ---
> > > > drivers/pci/controller/dwc/pcie-intel-gw.c | 10 ++++++----
> > > > 1 file changed, 6 insertions(+), 4 deletions(-)
> > > >
> > > > diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c
> > b/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > > index 0cedd1f95f37..ae96bfbb6c83 100644
> > > > --- a/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > > +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > > @@ -39,6 +39,10 @@
> > > > #define PCIE_APP_IRN_PM_TO_ACK BIT(9)
> > > > #define PCIE_APP_IRN_LINK_AUTO_BW_STAT BIT(11)
> > > > #define PCIE_APP_IRN_BW_MGT BIT(12)
> > > > +#define PCIE_APP_IRN_INTA BIT(13)
> > > > +#define PCIE_APP_IRN_INTB BIT(14)
> > > > +#define PCIE_APP_IRN_INTC BIT(15)
> > > > +#define PCIE_APP_IRN_INTD BIT(16)
> > > > #define PCIE_APP_IRN_MSG_LTR BIT(18)
> > > > #define PCIE_APP_IRN_SYS_ERR_RC BIT(29)
> > > > #define PCIE_APP_INTX_OFST 12
> > > > @@ -48,10 +52,8 @@
> > > > PCIE_APP_IRN_RX_VDM_MSG | PCIE_APP_IRN_SYS_ERR_RC | \
> > > > PCIE_APP_IRN_PM_TO_ACK | PCIE_APP_IRN_MSG_LTR | \
> > > > PCIE_APP_IRN_BW_MGT | PCIE_APP_IRN_LINK_AUTO_BW_STAT | \
> > > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTA) | \
> > > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTB) | \
> > > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTC) | \
> > > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTD))
> > > > + PCIE_APP_IRN_INTA | PCIE_APP_IRN_INTB | \
> > > > + PCIE_APP_IRN_INTC | PCIE_APP_IRN_INTD)
> > > >
> > > > #define BUS_IATU_OFFSET SZ_256M
> > > > #define RESET_INTERVAL_MS 100
> > >
> > > This looks like a significant bug - which in turn raises the question
> > > on how well this driver has been tested.
> > to give them the benefit of doubt: maybe only MSIs were tested
> >
> > > Dilip, can you review and ACK asap please ?
> > From "Re: MaxLinear, please maintain your drivers was Re: [PATCH]
> > leds: lgm: fix gpiolib dependency" [0]:
> > > Please send any Lightning Mountain SoC related issues email to Rahul
> > > Tanwar ([email protected]) and I will ensure that I address the
> > > issues in a timely manner.
> > so I added [email protected] to this email
> >
> >
> > Best regards,
> > Martin
> >
> >
> > [0] https://lkml.org/lkml/2021/3/16/282
> > <https://lkml.org/lkml/2021/3/16/282>
>
>
> Dilip has left the org. So not sure how exactly he tested it (maybe only
> MSIs). But i have confirmed it to be a bug. Thanks Martin for fixing it.
Can you take on maintainership for this driver please ?
If yes please send a MAINTAINERS file patch.
Thanks,
Lorenzo
> Acked-by: Rahul Tanwar <[email protected]>
>
> Regards,
> Rahul
>
>
>
>
>
On Fri, Apr 09, 2021 at 11:29:46AM +0100, Lorenzo Pieralisi wrote:
> On Fri, Apr 09, 2021 at 10:17:12AM +0000, Rahul Tanwar wrote:
> > On 9/4/2021 4:40 am, Martin Blumenstingl wrote:
> > > This email was sent from outside of MaxLinear.
> > >
> > > Hi Lorenzo,
> > >
> > > On Tue, Mar 23, 2021 at 12:36 PM Lorenzo Pieralisi
> > > <[email protected]> wrote:
> > > >
> > > > On Wed, Jan 06, 2021 at 02:55:40PM +0100, Martin Blumenstingl wrote:
> > > > > The legacy PCI interrupt lines need to be enabled using PCIE_APP_IRNEN
> > > > > bits 13 (INTA), 14 (INTB), 15 (INTC) and 16 (INTD). The old code
> > > however
> > > > > was taking (for example) "13" as raw value instead of taking BIT(13).
> > > > > Define the legacy PCI interrupt bits using the BIT() macro and then use
> > > > > these in PCIE_APP_IRN_INT.
> > > > >
> > > > > Fixes: ed22aaaede44 ("PCI: dwc: intel: PCIe RC controller driver")
> > > > > Signed-off-by: Martin Blumenstingl <[email protected]>
> > > > > ---
> > > > > drivers/pci/controller/dwc/pcie-intel-gw.c | 10 ++++++----
> > > > > 1 file changed, 6 insertions(+), 4 deletions(-)
> > > > >
> > > > > diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > b/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > > > index 0cedd1f95f37..ae96bfbb6c83 100644
> > > > > --- a/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > > > +++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
> > > > > @@ -39,6 +39,10 @@
> > > > > #define PCIE_APP_IRN_PM_TO_ACK BIT(9)
> > > > > #define PCIE_APP_IRN_LINK_AUTO_BW_STAT BIT(11)
> > > > > #define PCIE_APP_IRN_BW_MGT BIT(12)
> > > > > +#define PCIE_APP_IRN_INTA BIT(13)
> > > > > +#define PCIE_APP_IRN_INTB BIT(14)
> > > > > +#define PCIE_APP_IRN_INTC BIT(15)
> > > > > +#define PCIE_APP_IRN_INTD BIT(16)
> > > > > #define PCIE_APP_IRN_MSG_LTR BIT(18)
> > > > > #define PCIE_APP_IRN_SYS_ERR_RC BIT(29)
> > > > > #define PCIE_APP_INTX_OFST 12
> > > > > @@ -48,10 +52,8 @@
> > > > > PCIE_APP_IRN_RX_VDM_MSG | PCIE_APP_IRN_SYS_ERR_RC | \
> > > > > PCIE_APP_IRN_PM_TO_ACK | PCIE_APP_IRN_MSG_LTR | \
> > > > > PCIE_APP_IRN_BW_MGT | PCIE_APP_IRN_LINK_AUTO_BW_STAT | \
> > > > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTA) | \
> > > > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTB) | \
> > > > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTC) | \
> > > > > - (PCIE_APP_INTX_OFST + PCI_INTERRUPT_INTD))
> > > > > + PCIE_APP_IRN_INTA | PCIE_APP_IRN_INTB | \
> > > > > + PCIE_APP_IRN_INTC | PCIE_APP_IRN_INTD)
> > > > >
> > > > > #define BUS_IATU_OFFSET SZ_256M
> > > > > #define RESET_INTERVAL_MS 100
> > > >
> > > > This looks like a significant bug - which in turn raises the question
> > > > on how well this driver has been tested.
> > > to give them the benefit of doubt: maybe only MSIs were tested
> > >
> > > > Dilip, can you review and ACK asap please ?
> > > From "Re: MaxLinear, please maintain your drivers was Re: [PATCH]
> > > leds: lgm: fix gpiolib dependency" [0]:
> > > > Please send any Lightning Mountain SoC related issues email to Rahul
> > > > Tanwar ([email protected]) and I will ensure that I address the
> > > > issues in a timely manner.
> > > so I added [email protected] to this email
> > >
> > >
> > > Best regards,
> > > Martin
> > >
> > >
> > > [0] https://lkml.org/lkml/2021/3/16/282
> > > <https://lkml.org/lkml/2021/3/16/282>
> >
> >
> > Dilip has left the org. So not sure how exactly he tested it (maybe only
> > MSIs). But i have confirmed it to be a bug. Thanks Martin for fixing it.
>
> Can you take on maintainership for this driver please ?
I have not received any reply on this - this driver has no maintainer
(with HW to test it) looking after it, it'd be great if we can add
one - please let me know.
Lorenzo
On Wed, 6 Jan 2021 14:55:40 +0100, Martin Blumenstingl wrote:
> The legacy PCI interrupt lines need to be enabled using PCIE_APP_IRNEN
> bits 13 (INTA), 14 (INTB), 15 (INTC) and 16 (INTD). The old code however
> was taking (for example) "13" as raw value instead of taking BIT(13).
> Define the legacy PCI interrupt bits using the BIT() macro and then use
> these in PCIE_APP_IRN_INT.
Applied to pci/dwc, thanks!
[1/1] PCI: dwc/intel-gw: Fix enabling the legacy PCI interrupt lines
https://git.kernel.org/lpieralisi/pci/c/263dcd1abf
Thanks,
Lorenzo