* [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
@ 2021-09-01 3:50 ` neal_liu
0 siblings, 0 replies; 16+ messages in thread
From: neal_liu @ 2021-09-01 3:50 UTC (permalink / raw)
To: Alan Stern, Greg Kroah-Hartman, Tony Prisk, linux-usb,
linux-kernel, linux-arm-kernel
Cc: neal_liu, Tao Ren, BMC-SW
Retitle.
For Aspeed, HCHalted status depends on not only Run/Stop but also
ASS/PSS status.
Handshake CMD_RUN on startup instead.
Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
---
drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
drivers/usb/host/ehci-platform.c | 6 ++++++
drivers/usb/host/ehci.h | 1 +
3 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 10b0365f3439..01c022e46aa2 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
/* Wait until HC become operational */
ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
msleep(5);
- rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
+
+ /* For Aspeed, STS_HALT also depends on ASS/PSS status.
+ * Skip this check on startup.
+ */
+ if (ehci->is_aspeed)
+ rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
+ 1, 100 * 1000);
+ else
+ rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
+ 0, 100 * 1000);
up_write(&ehci_cf_port_reset_rwsem);
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index c70f2d0b4aaf..c3dc906274d9 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -297,6 +297,12 @@ static int ehci_platform_probe(struct platform_device *dev)
"has-transaction-translator"))
hcd->has_tt = 1;
+ if (of_device_is_compatible(dev->dev.of_node,
+ "aspeed,ast2500-ehci") ||
+ of_device_is_compatible(dev->dev.of_node,
+ "aspeed,ast2600-ehci"))
+ ehci->is_aspeed = 1;
+
if (soc_device_match(quirk_poll_match))
priv->quirk_poll = true;
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 80bb823aa9fe..fdd073cc053b 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
unsigned need_oc_pp_cycle:1; /* MPC834X port power */
unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
unsigned spurious_oc:1;
+ unsigned is_aspeed:1;
/* required for usb32 quirk */
#define OHCI_CTRL_HCFS (3 << 6)
--
2.17.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 16+ messages in thread* Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
2021-09-01 3:50 ` neal_liu
@ 2021-09-01 6:07 ` Greg Kroah-Hartman
-1 siblings, 0 replies; 16+ messages in thread
From: Greg Kroah-Hartman @ 2021-09-01 6:07 UTC (permalink / raw)
To: neal_liu
Cc: Alan Stern, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, Tao Ren, BMC-SW
On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> Retitle.
>
> For Aspeed, HCHalted status depends on not only Run/Stop but also
> ASS/PSS status.
> Handshake CMD_RUN on startup instead.
>
> Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> ---
> drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> drivers/usb/host/ehci-platform.c | 6 ++++++
> drivers/usb/host/ehci.h | 1 +
> 3 files changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> index 10b0365f3439..01c022e46aa2 100644
> --- a/drivers/usb/host/ehci-hcd.c
> +++ b/drivers/usb/host/ehci-hcd.c
> @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> /* Wait until HC become operational */
> ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
> msleep(5);
> - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> +
> + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> + * Skip this check on startup.
> + */
> + if (ehci->is_aspeed)
> + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> + 1, 100 * 1000);
> + else
> + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> + 0, 100 * 1000);
>
> up_write(&ehci_cf_port_reset_rwsem);
>
> diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
> index c70f2d0b4aaf..c3dc906274d9 100644
> --- a/drivers/usb/host/ehci-platform.c
> +++ b/drivers/usb/host/ehci-platform.c
> @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct platform_device *dev)
> "has-transaction-translator"))
> hcd->has_tt = 1;
>
> + if (of_device_is_compatible(dev->dev.of_node,
> + "aspeed,ast2500-ehci") ||
> + of_device_is_compatible(dev->dev.of_node,
> + "aspeed,ast2600-ehci"))
> + ehci->is_aspeed = 1;
> +
> if (soc_device_match(quirk_poll_match))
> priv->quirk_poll = true;
>
> diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
> index 80bb823aa9fe..fdd073cc053b 100644
> --- a/drivers/usb/host/ehci.h
> +++ b/drivers/usb/host/ehci.h
> @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
> unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> unsigned spurious_oc:1;
> + unsigned is_aspeed:1;
>
> /* required for usb32 quirk */
> #define OHCI_CTRL_HCFS (3 << 6)
> --
> 2.17.1
>
Hi,
This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him
a patch that has triggered this response. He used to manually respond
to these common problems, but in order to save his sanity (he kept
writing the same thing over and over, yet to different people), I was
created. Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
kernel tree.
You are receiving this message because of the following common error(s)
as indicated below:
- It looks like you did not use your "real" name for the patch on either
the Signed-off-by: line, or the From: line (both of which have to
match). Please read the kernel file, Documentation/SubmittingPatches
for how to do this correctly.
- This looks like a new version of a previously submitted patch, but you
did not list below the --- line any changes from the previous version.
Please read the section entitled "The canonical patch format" in the
kernel file, Documentation/SubmittingPatches for what needs to be done
here to properly describe this.
If you wish to discuss this problem further, or you have questions about
how to resolve this issue, please feel free to respond to this email and
Greg will reply once he has dug out from the pending patches received
from other developers.
thanks,
greg k-h's patch email bot
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
@ 2021-09-01 6:07 ` Greg Kroah-Hartman
0 siblings, 0 replies; 16+ messages in thread
From: Greg Kroah-Hartman @ 2021-09-01 6:07 UTC (permalink / raw)
To: neal_liu
Cc: Alan Stern, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, Tao Ren, BMC-SW
On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> Retitle.
>
> For Aspeed, HCHalted status depends on not only Run/Stop but also
> ASS/PSS status.
> Handshake CMD_RUN on startup instead.
>
> Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> ---
> drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> drivers/usb/host/ehci-platform.c | 6 ++++++
> drivers/usb/host/ehci.h | 1 +
> 3 files changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> index 10b0365f3439..01c022e46aa2 100644
> --- a/drivers/usb/host/ehci-hcd.c
> +++ b/drivers/usb/host/ehci-hcd.c
> @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> /* Wait until HC become operational */
> ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
> msleep(5);
> - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> +
> + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> + * Skip this check on startup.
> + */
> + if (ehci->is_aspeed)
> + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> + 1, 100 * 1000);
> + else
> + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> + 0, 100 * 1000);
>
> up_write(&ehci_cf_port_reset_rwsem);
>
> diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
> index c70f2d0b4aaf..c3dc906274d9 100644
> --- a/drivers/usb/host/ehci-platform.c
> +++ b/drivers/usb/host/ehci-platform.c
> @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct platform_device *dev)
> "has-transaction-translator"))
> hcd->has_tt = 1;
>
> + if (of_device_is_compatible(dev->dev.of_node,
> + "aspeed,ast2500-ehci") ||
> + of_device_is_compatible(dev->dev.of_node,
> + "aspeed,ast2600-ehci"))
> + ehci->is_aspeed = 1;
> +
> if (soc_device_match(quirk_poll_match))
> priv->quirk_poll = true;
>
> diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
> index 80bb823aa9fe..fdd073cc053b 100644
> --- a/drivers/usb/host/ehci.h
> +++ b/drivers/usb/host/ehci.h
> @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
> unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> unsigned spurious_oc:1;
> + unsigned is_aspeed:1;
>
> /* required for usb32 quirk */
> #define OHCI_CTRL_HCFS (3 << 6)
> --
> 2.17.1
>
Hi,
This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him
a patch that has triggered this response. He used to manually respond
to these common problems, but in order to save his sanity (he kept
writing the same thing over and over, yet to different people), I was
created. Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
kernel tree.
You are receiving this message because of the following common error(s)
as indicated below:
- It looks like you did not use your "real" name for the patch on either
the Signed-off-by: line, or the From: line (both of which have to
match). Please read the kernel file, Documentation/SubmittingPatches
for how to do this correctly.
- This looks like a new version of a previously submitted patch, but you
did not list below the --- line any changes from the previous version.
Please read the section entitled "The canonical patch format" in the
kernel file, Documentation/SubmittingPatches for what needs to be done
here to properly describe this.
If you wish to discuss this problem further, or you have questions about
how to resolve this issue, please feel free to respond to this email and
Greg will reply once he has dug out from the pending patches received
from other developers.
thanks,
greg k-h's patch email bot
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
2021-09-01 6:07 ` Greg Kroah-Hartman
@ 2021-09-09 5:45 ` Tao Ren
-1 siblings, 0 replies; 16+ messages in thread
From: Tao Ren @ 2021-09-09 5:45 UTC (permalink / raw)
To: neal_liu
Cc: Greg Kroah-Hartman, Alan Stern, Tony Prisk, linux-usb,
linux-kernel, linux-arm-kernel, BMC-SW
Hi Neal,
On Wed, Sep 01, 2021 at 08:07:53AM +0200, Greg Kroah-Hartman wrote:
> On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > Retitle.
> >
> > For Aspeed, HCHalted status depends on not only Run/Stop but also
> > ASS/PSS status.
> > Handshake CMD_RUN on startup instead.
> >
> > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> > ---
> > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > drivers/usb/host/ehci-platform.c | 6 ++++++
> > drivers/usb/host/ehci.h | 1 +
> > 3 files changed, 17 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> > index 10b0365f3439..01c022e46aa2 100644
> > --- a/drivers/usb/host/ehci-hcd.c
> > +++ b/drivers/usb/host/ehci-hcd.c
> > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > /* Wait until HC become operational */
> > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
> > msleep(5);
> > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> > +
> > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > + * Skip this check on startup.
> > + */
> > + if (ehci->is_aspeed)
> > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > + 1, 100 * 1000);
> > + else
> > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > + 0, 100 * 1000);
> >
> > up_write(&ehci_cf_port_reset_rwsem);
> >
> > diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
> > index c70f2d0b4aaf..c3dc906274d9 100644
> > --- a/drivers/usb/host/ehci-platform.c
> > +++ b/drivers/usb/host/ehci-platform.c
> > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct platform_device *dev)
> > "has-transaction-translator"))
> > hcd->has_tt = 1;
> >
> > + if (of_device_is_compatible(dev->dev.of_node,
> > + "aspeed,ast2500-ehci") ||
> > + of_device_is_compatible(dev->dev.of_node,
> > + "aspeed,ast2600-ehci"))
> > + ehci->is_aspeed = 1;
> > +
> > if (soc_device_match(quirk_poll_match))
> > priv->quirk_poll = true;
> >
> > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
> > index 80bb823aa9fe..fdd073cc053b 100644
> > --- a/drivers/usb/host/ehci.h
> > +++ b/drivers/usb/host/ehci.h
> > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
> > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > unsigned spurious_oc:1;
> > + unsigned is_aspeed:1;
> >
> > /* required for usb32 quirk */
> > #define OHCI_CTRL_HCFS (3 << 6)
> > --
> > 2.17.1
> >
>
> Hi,
>
> This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him
> a patch that has triggered this response. He used to manually respond
> to these common problems, but in order to save his sanity (he kept
> writing the same thing over and over, yet to different people), I was
> created. Hopefully you will not take offence and will fix the problem
> in your patch and resubmit it so that it can be accepted into the Linux
> kernel tree.
>
> You are receiving this message because of the following common error(s)
> as indicated below:
>
> - It looks like you did not use your "real" name for the patch on either
> the Signed-off-by: line, or the From: line (both of which have to
> match). Please read the kernel file, Documentation/SubmittingPatches
> for how to do this correctly.
>
> - This looks like a new version of a previously submitted patch, but you
> did not list below the --- line any changes from the previous version.
> Please read the section entitled "The canonical patch format" in the
> kernel file, Documentation/SubmittingPatches for what needs to be done
> here to properly describe this.
>
> If you wish to discuss this problem further, or you have questions about
> how to resolve this issue, please feel free to respond to this email and
> Greg will reply once he has dug out from the pending patches received
> from other developers.
>
> thanks,
>
> greg k-h's patch email bot
Thank you Neal for the patch. I tried the fix on my CMM (AST2500) and
Fuji (AST2600) BMC and it works on both platforms.
Can you please address Greg's comments above and send out a new version?
BTW, please don't forget to include Alan's Acked-by in the new version.
Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
Tested-by: Tao Ren <rentao.bupt@gmail.com>
Cheers,
Tao
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
@ 2021-09-09 5:45 ` Tao Ren
0 siblings, 0 replies; 16+ messages in thread
From: Tao Ren @ 2021-09-09 5:45 UTC (permalink / raw)
To: neal_liu
Cc: Greg Kroah-Hartman, Alan Stern, Tony Prisk, linux-usb,
linux-kernel, linux-arm-kernel, BMC-SW
Hi Neal,
On Wed, Sep 01, 2021 at 08:07:53AM +0200, Greg Kroah-Hartman wrote:
> On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > Retitle.
> >
> > For Aspeed, HCHalted status depends on not only Run/Stop but also
> > ASS/PSS status.
> > Handshake CMD_RUN on startup instead.
> >
> > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> > ---
> > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > drivers/usb/host/ehci-platform.c | 6 ++++++
> > drivers/usb/host/ehci.h | 1 +
> > 3 files changed, 17 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> > index 10b0365f3439..01c022e46aa2 100644
> > --- a/drivers/usb/host/ehci-hcd.c
> > +++ b/drivers/usb/host/ehci-hcd.c
> > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > /* Wait until HC become operational */
> > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
> > msleep(5);
> > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> > +
> > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > + * Skip this check on startup.
> > + */
> > + if (ehci->is_aspeed)
> > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > + 1, 100 * 1000);
> > + else
> > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > + 0, 100 * 1000);
> >
> > up_write(&ehci_cf_port_reset_rwsem);
> >
> > diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
> > index c70f2d0b4aaf..c3dc906274d9 100644
> > --- a/drivers/usb/host/ehci-platform.c
> > +++ b/drivers/usb/host/ehci-platform.c
> > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct platform_device *dev)
> > "has-transaction-translator"))
> > hcd->has_tt = 1;
> >
> > + if (of_device_is_compatible(dev->dev.of_node,
> > + "aspeed,ast2500-ehci") ||
> > + of_device_is_compatible(dev->dev.of_node,
> > + "aspeed,ast2600-ehci"))
> > + ehci->is_aspeed = 1;
> > +
> > if (soc_device_match(quirk_poll_match))
> > priv->quirk_poll = true;
> >
> > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
> > index 80bb823aa9fe..fdd073cc053b 100644
> > --- a/drivers/usb/host/ehci.h
> > +++ b/drivers/usb/host/ehci.h
> > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
> > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > unsigned spurious_oc:1;
> > + unsigned is_aspeed:1;
> >
> > /* required for usb32 quirk */
> > #define OHCI_CTRL_HCFS (3 << 6)
> > --
> > 2.17.1
> >
>
> Hi,
>
> This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him
> a patch that has triggered this response. He used to manually respond
> to these common problems, but in order to save his sanity (he kept
> writing the same thing over and over, yet to different people), I was
> created. Hopefully you will not take offence and will fix the problem
> in your patch and resubmit it so that it can be accepted into the Linux
> kernel tree.
>
> You are receiving this message because of the following common error(s)
> as indicated below:
>
> - It looks like you did not use your "real" name for the patch on either
> the Signed-off-by: line, or the From: line (both of which have to
> match). Please read the kernel file, Documentation/SubmittingPatches
> for how to do this correctly.
>
> - This looks like a new version of a previously submitted patch, but you
> did not list below the --- line any changes from the previous version.
> Please read the section entitled "The canonical patch format" in the
> kernel file, Documentation/SubmittingPatches for what needs to be done
> here to properly describe this.
>
> If you wish to discuss this problem further, or you have questions about
> how to resolve this issue, please feel free to respond to this email and
> Greg will reply once he has dug out from the pending patches received
> from other developers.
>
> thanks,
>
> greg k-h's patch email bot
Thank you Neal for the patch. I tried the fix on my CMM (AST2500) and
Fuji (AST2600) BMC and it works on both platforms.
Can you please address Greg's comments above and send out a new version?
BTW, please don't forget to include Alan's Acked-by in the new version.
Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
Tested-by: Tao Ren <rentao.bupt@gmail.com>
Cheers,
Tao
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 16+ messages in thread* RE: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
2021-09-09 5:45 ` Tao Ren
@ 2021-09-09 6:23 ` Neal Liu
-1 siblings, 0 replies; 16+ messages in thread
From: Neal Liu @ 2021-09-09 6:23 UTC (permalink / raw)
To: Tao Ren
Cc: Greg Kroah-Hartman, Alan Stern, Tony Prisk, linux-usb,
linux-kernel, linux-arm-kernel, BMC-SW
> Hi Neal,
>
> On Wed, Sep 01, 2021 at 08:07:53AM +0200, Greg Kroah-Hartman wrote:
> > On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > > Retitle.
> > >
> > > For Aspeed, HCHalted status depends on not only Run/Stop but also
> > > ASS/PSS status.
> > > Handshake CMD_RUN on startup instead.
> > >
> > > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> > > ---
> > > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > > drivers/usb/host/ehci-platform.c | 6 ++++++
> > > drivers/usb/host/ehci.h | 1 +
> > > 3 files changed, 17 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/usb/host/ehci-hcd.c
> > > b/drivers/usb/host/ehci-hcd.c index 10b0365f3439..01c022e46aa2
> > > 100644
> > > --- a/drivers/usb/host/ehci-hcd.c
> > > +++ b/drivers/usb/host/ehci-hcd.c
> > > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > > /* Wait until HC become operational */
> > > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes
> */
> > > msleep(5);
> > > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> > > +
> > > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > > + * Skip this check on startup.
> > > + */
> > > + if (ehci->is_aspeed)
> > > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > > + 1, 100 * 1000);
> > > + else
> > > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > > + 0, 100 * 1000);
> > >
> > > up_write(&ehci_cf_port_reset_rwsem);
> > >
> > > diff --git a/drivers/usb/host/ehci-platform.c
> > > b/drivers/usb/host/ehci-platform.c
> > > index c70f2d0b4aaf..c3dc906274d9 100644
> > > --- a/drivers/usb/host/ehci-platform.c
> > > +++ b/drivers/usb/host/ehci-platform.c
> > > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct
> platform_device *dev)
> > > "has-transaction-translator"))
> > > hcd->has_tt = 1;
> > >
> > > + if (of_device_is_compatible(dev->dev.of_node,
> > > + "aspeed,ast2500-ehci") ||
> > > + of_device_is_compatible(dev->dev.of_node,
> > > + "aspeed,ast2600-ehci"))
> > > + ehci->is_aspeed = 1;
> > > +
> > > if (soc_device_match(quirk_poll_match))
> > > priv->quirk_poll = true;
> > >
> > > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index
> > > 80bb823aa9fe..fdd073cc053b 100644
> > > --- a/drivers/usb/host/ehci.h
> > > +++ b/drivers/usb/host/ehci.h
> > > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per
> controller */
> > > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > > unsigned spurious_oc:1;
> > > + unsigned is_aspeed:1;
> > >
> > > /* required for usb32 quirk */
> > > #define OHCI_CTRL_HCFS (3 << 6)
> > > --
> > > 2.17.1
> > >
> >
> > Hi,
> >
> > This is the friendly patch-bot of Greg Kroah-Hartman. You have sent
> > him a patch that has triggered this response. He used to manually
> > respond to these common problems, but in order to save his sanity (he
> > kept writing the same thing over and over, yet to different people), I
> > was created. Hopefully you will not take offence and will fix the
> > problem in your patch and resubmit it so that it can be accepted into
> > the Linux kernel tree.
> >
> > You are receiving this message because of the following common
> > error(s) as indicated below:
> >
> > - It looks like you did not use your "real" name for the patch on either
> > the Signed-off-by: line, or the From: line (both of which have to
> > match). Please read the kernel file, Documentation/SubmittingPatches
> > for how to do this correctly.
> >
> > - This looks like a new version of a previously submitted patch, but you
> > did not list below the --- line any changes from the previous version.
> > Please read the section entitled "The canonical patch format" in the
> > kernel file, Documentation/SubmittingPatches for what needs to be done
> > here to properly describe this.
> >
> > If you wish to discuss this problem further, or you have questions
> > about how to resolve this issue, please feel free to respond to this
> > email and Greg will reply once he has dug out from the pending patches
> > received from other developers.
> >
> > thanks,
> >
> > greg k-h's patch email bot
>
> Thank you Neal for the patch. I tried the fix on my CMM (AST2500) and Fuji
> (AST2600) BMC and it works on both platforms.
>
> Can you please address Greg's comments above and send out a new version?
> BTW, please don't forget to include Alan's Acked-by in the new version.
>
> Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
> Tested-by: Tao Ren <rentao.bupt@gmail.com>
>
>
> Cheers,
>
> Tao
Sure! I'll try to fix Greg's comments on next patch. I think the problem is the first one.
And thanks for your review & test.
-Neal
^ permalink raw reply [flat|nested] 16+ messages in thread* RE: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
@ 2021-09-09 6:23 ` Neal Liu
0 siblings, 0 replies; 16+ messages in thread
From: Neal Liu @ 2021-09-09 6:23 UTC (permalink / raw)
To: Tao Ren
Cc: Greg Kroah-Hartman, Alan Stern, Tony Prisk, linux-usb,
linux-kernel, linux-arm-kernel, BMC-SW
> Hi Neal,
>
> On Wed, Sep 01, 2021 at 08:07:53AM +0200, Greg Kroah-Hartman wrote:
> > On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > > Retitle.
> > >
> > > For Aspeed, HCHalted status depends on not only Run/Stop but also
> > > ASS/PSS status.
> > > Handshake CMD_RUN on startup instead.
> > >
> > > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> > > ---
> > > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > > drivers/usb/host/ehci-platform.c | 6 ++++++
> > > drivers/usb/host/ehci.h | 1 +
> > > 3 files changed, 17 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/usb/host/ehci-hcd.c
> > > b/drivers/usb/host/ehci-hcd.c index 10b0365f3439..01c022e46aa2
> > > 100644
> > > --- a/drivers/usb/host/ehci-hcd.c
> > > +++ b/drivers/usb/host/ehci-hcd.c
> > > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > > /* Wait until HC become operational */
> > > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes
> */
> > > msleep(5);
> > > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> > > +
> > > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > > + * Skip this check on startup.
> > > + */
> > > + if (ehci->is_aspeed)
> > > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > > + 1, 100 * 1000);
> > > + else
> > > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > > + 0, 100 * 1000);
> > >
> > > up_write(&ehci_cf_port_reset_rwsem);
> > >
> > > diff --git a/drivers/usb/host/ehci-platform.c
> > > b/drivers/usb/host/ehci-platform.c
> > > index c70f2d0b4aaf..c3dc906274d9 100644
> > > --- a/drivers/usb/host/ehci-platform.c
> > > +++ b/drivers/usb/host/ehci-platform.c
> > > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct
> platform_device *dev)
> > > "has-transaction-translator"))
> > > hcd->has_tt = 1;
> > >
> > > + if (of_device_is_compatible(dev->dev.of_node,
> > > + "aspeed,ast2500-ehci") ||
> > > + of_device_is_compatible(dev->dev.of_node,
> > > + "aspeed,ast2600-ehci"))
> > > + ehci->is_aspeed = 1;
> > > +
> > > if (soc_device_match(quirk_poll_match))
> > > priv->quirk_poll = true;
> > >
> > > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index
> > > 80bb823aa9fe..fdd073cc053b 100644
> > > --- a/drivers/usb/host/ehci.h
> > > +++ b/drivers/usb/host/ehci.h
> > > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per
> controller */
> > > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > > unsigned spurious_oc:1;
> > > + unsigned is_aspeed:1;
> > >
> > > /* required for usb32 quirk */
> > > #define OHCI_CTRL_HCFS (3 << 6)
> > > --
> > > 2.17.1
> > >
> >
> > Hi,
> >
> > This is the friendly patch-bot of Greg Kroah-Hartman. You have sent
> > him a patch that has triggered this response. He used to manually
> > respond to these common problems, but in order to save his sanity (he
> > kept writing the same thing over and over, yet to different people), I
> > was created. Hopefully you will not take offence and will fix the
> > problem in your patch and resubmit it so that it can be accepted into
> > the Linux kernel tree.
> >
> > You are receiving this message because of the following common
> > error(s) as indicated below:
> >
> > - It looks like you did not use your "real" name for the patch on either
> > the Signed-off-by: line, or the From: line (both of which have to
> > match). Please read the kernel file, Documentation/SubmittingPatches
> > for how to do this correctly.
> >
> > - This looks like a new version of a previously submitted patch, but you
> > did not list below the --- line any changes from the previous version.
> > Please read the section entitled "The canonical patch format" in the
> > kernel file, Documentation/SubmittingPatches for what needs to be done
> > here to properly describe this.
> >
> > If you wish to discuss this problem further, or you have questions
> > about how to resolve this issue, please feel free to respond to this
> > email and Greg will reply once he has dug out from the pending patches
> > received from other developers.
> >
> > thanks,
> >
> > greg k-h's patch email bot
>
> Thank you Neal for the patch. I tried the fix on my CMM (AST2500) and Fuji
> (AST2600) BMC and it works on both platforms.
>
> Can you please address Greg's comments above and send out a new version?
> BTW, please don't forget to include Alan's Acked-by in the new version.
>
> Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
> Tested-by: Tao Ren <rentao.bupt@gmail.com>
>
>
> Cheers,
>
> Tao
Sure! I'll try to fix Greg's comments on next patch. I think the problem is the first one.
And thanks for your review & test.
-Neal
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
2021-09-09 6:23 ` Neal Liu
@ 2021-09-09 6:38 ` Greg Kroah-Hartman
-1 siblings, 0 replies; 16+ messages in thread
From: Greg Kroah-Hartman @ 2021-09-09 6:38 UTC (permalink / raw)
To: Neal Liu
Cc: Tao Ren, Alan Stern, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, BMC-SW
On Thu, Sep 09, 2021 at 06:23:10AM +0000, Neal Liu wrote:
>
> > Hi Neal,
> >
> > On Wed, Sep 01, 2021 at 08:07:53AM +0200, Greg Kroah-Hartman wrote:
> > > On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > > > Retitle.
> > > >
> > > > For Aspeed, HCHalted status depends on not only Run/Stop but also
> > > > ASS/PSS status.
> > > > Handshake CMD_RUN on startup instead.
> > > >
> > > > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> > > > ---
> > > > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > > > drivers/usb/host/ehci-platform.c | 6 ++++++
> > > > drivers/usb/host/ehci.h | 1 +
> > > > 3 files changed, 17 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/usb/host/ehci-hcd.c
> > > > b/drivers/usb/host/ehci-hcd.c index 10b0365f3439..01c022e46aa2
> > > > 100644
> > > > --- a/drivers/usb/host/ehci-hcd.c
> > > > +++ b/drivers/usb/host/ehci-hcd.c
> > > > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > > > /* Wait until HC become operational */
> > > > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes
> > */
> > > > msleep(5);
> > > > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> > > > +
> > > > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > > > + * Skip this check on startup.
> > > > + */
> > > > + if (ehci->is_aspeed)
> > > > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > > > + 1, 100 * 1000);
> > > > + else
> > > > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > > > + 0, 100 * 1000);
> > > >
> > > > up_write(&ehci_cf_port_reset_rwsem);
> > > >
> > > > diff --git a/drivers/usb/host/ehci-platform.c
> > > > b/drivers/usb/host/ehci-platform.c
> > > > index c70f2d0b4aaf..c3dc906274d9 100644
> > > > --- a/drivers/usb/host/ehci-platform.c
> > > > +++ b/drivers/usb/host/ehci-platform.c
> > > > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct
> > platform_device *dev)
> > > > "has-transaction-translator"))
> > > > hcd->has_tt = 1;
> > > >
> > > > + if (of_device_is_compatible(dev->dev.of_node,
> > > > + "aspeed,ast2500-ehci") ||
> > > > + of_device_is_compatible(dev->dev.of_node,
> > > > + "aspeed,ast2600-ehci"))
> > > > + ehci->is_aspeed = 1;
> > > > +
> > > > if (soc_device_match(quirk_poll_match))
> > > > priv->quirk_poll = true;
> > > >
> > > > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index
> > > > 80bb823aa9fe..fdd073cc053b 100644
> > > > --- a/drivers/usb/host/ehci.h
> > > > +++ b/drivers/usb/host/ehci.h
> > > > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per
> > controller */
> > > > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > > > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > > > unsigned spurious_oc:1;
> > > > + unsigned is_aspeed:1;
> > > >
> > > > /* required for usb32 quirk */
> > > > #define OHCI_CTRL_HCFS (3 << 6)
> > > > --
> > > > 2.17.1
> > > >
> > >
> > > Hi,
> > >
> > > This is the friendly patch-bot of Greg Kroah-Hartman. You have sent
> > > him a patch that has triggered this response. He used to manually
> > > respond to these common problems, but in order to save his sanity (he
> > > kept writing the same thing over and over, yet to different people), I
> > > was created. Hopefully you will not take offence and will fix the
> > > problem in your patch and resubmit it so that it can be accepted into
> > > the Linux kernel tree.
> > >
> > > You are receiving this message because of the following common
> > > error(s) as indicated below:
> > >
> > > - It looks like you did not use your "real" name for the patch on either
> > > the Signed-off-by: line, or the From: line (both of which have to
> > > match). Please read the kernel file, Documentation/SubmittingPatches
> > > for how to do this correctly.
> > >
> > > - This looks like a new version of a previously submitted patch, but you
> > > did not list below the --- line any changes from the previous version.
> > > Please read the section entitled "The canonical patch format" in the
> > > kernel file, Documentation/SubmittingPatches for what needs to be done
> > > here to properly describe this.
> > >
> > > If you wish to discuss this problem further, or you have questions
> > > about how to resolve this issue, please feel free to respond to this
> > > email and Greg will reply once he has dug out from the pending patches
> > > received from other developers.
> > >
> > > thanks,
> > >
> > > greg k-h's patch email bot
> >
> > Thank you Neal for the patch. I tried the fix on my CMM (AST2500) and Fuji
> > (AST2600) BMC and it works on both platforms.
> >
> > Can you please address Greg's comments above and send out a new version?
> > BTW, please don't forget to include Alan's Acked-by in the new version.
> >
> > Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
> > Tested-by: Tao Ren <rentao.bupt@gmail.com>
> >
> >
> > Cheers,
> >
> > Tao
>
> Sure! I'll try to fix Greg's comments on next patch. I think the problem is the first one.
> And thanks for your review & test.
Both problems are real, please fix them.
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
@ 2021-09-09 6:38 ` Greg Kroah-Hartman
0 siblings, 0 replies; 16+ messages in thread
From: Greg Kroah-Hartman @ 2021-09-09 6:38 UTC (permalink / raw)
To: Neal Liu
Cc: Tao Ren, Alan Stern, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, BMC-SW
On Thu, Sep 09, 2021 at 06:23:10AM +0000, Neal Liu wrote:
>
> > Hi Neal,
> >
> > On Wed, Sep 01, 2021 at 08:07:53AM +0200, Greg Kroah-Hartman wrote:
> > > On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > > > Retitle.
> > > >
> > > > For Aspeed, HCHalted status depends on not only Run/Stop but also
> > > > ASS/PSS status.
> > > > Handshake CMD_RUN on startup instead.
> > > >
> > > > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> > > > ---
> > > > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > > > drivers/usb/host/ehci-platform.c | 6 ++++++
> > > > drivers/usb/host/ehci.h | 1 +
> > > > 3 files changed, 17 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/usb/host/ehci-hcd.c
> > > > b/drivers/usb/host/ehci-hcd.c index 10b0365f3439..01c022e46aa2
> > > > 100644
> > > > --- a/drivers/usb/host/ehci-hcd.c
> > > > +++ b/drivers/usb/host/ehci-hcd.c
> > > > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > > > /* Wait until HC become operational */
> > > > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes
> > */
> > > > msleep(5);
> > > > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> > > > +
> > > > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > > > + * Skip this check on startup.
> > > > + */
> > > > + if (ehci->is_aspeed)
> > > > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > > > + 1, 100 * 1000);
> > > > + else
> > > > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > > > + 0, 100 * 1000);
> > > >
> > > > up_write(&ehci_cf_port_reset_rwsem);
> > > >
> > > > diff --git a/drivers/usb/host/ehci-platform.c
> > > > b/drivers/usb/host/ehci-platform.c
> > > > index c70f2d0b4aaf..c3dc906274d9 100644
> > > > --- a/drivers/usb/host/ehci-platform.c
> > > > +++ b/drivers/usb/host/ehci-platform.c
> > > > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct
> > platform_device *dev)
> > > > "has-transaction-translator"))
> > > > hcd->has_tt = 1;
> > > >
> > > > + if (of_device_is_compatible(dev->dev.of_node,
> > > > + "aspeed,ast2500-ehci") ||
> > > > + of_device_is_compatible(dev->dev.of_node,
> > > > + "aspeed,ast2600-ehci"))
> > > > + ehci->is_aspeed = 1;
> > > > +
> > > > if (soc_device_match(quirk_poll_match))
> > > > priv->quirk_poll = true;
> > > >
> > > > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index
> > > > 80bb823aa9fe..fdd073cc053b 100644
> > > > --- a/drivers/usb/host/ehci.h
> > > > +++ b/drivers/usb/host/ehci.h
> > > > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per
> > controller */
> > > > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > > > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > > > unsigned spurious_oc:1;
> > > > + unsigned is_aspeed:1;
> > > >
> > > > /* required for usb32 quirk */
> > > > #define OHCI_CTRL_HCFS (3 << 6)
> > > > --
> > > > 2.17.1
> > > >
> > >
> > > Hi,
> > >
> > > This is the friendly patch-bot of Greg Kroah-Hartman. You have sent
> > > him a patch that has triggered this response. He used to manually
> > > respond to these common problems, but in order to save his sanity (he
> > > kept writing the same thing over and over, yet to different people), I
> > > was created. Hopefully you will not take offence and will fix the
> > > problem in your patch and resubmit it so that it can be accepted into
> > > the Linux kernel tree.
> > >
> > > You are receiving this message because of the following common
> > > error(s) as indicated below:
> > >
> > > - It looks like you did not use your "real" name for the patch on either
> > > the Signed-off-by: line, or the From: line (both of which have to
> > > match). Please read the kernel file, Documentation/SubmittingPatches
> > > for how to do this correctly.
> > >
> > > - This looks like a new version of a previously submitted patch, but you
> > > did not list below the --- line any changes from the previous version.
> > > Please read the section entitled "The canonical patch format" in the
> > > kernel file, Documentation/SubmittingPatches for what needs to be done
> > > here to properly describe this.
> > >
> > > If you wish to discuss this problem further, or you have questions
> > > about how to resolve this issue, please feel free to respond to this
> > > email and Greg will reply once he has dug out from the pending patches
> > > received from other developers.
> > >
> > > thanks,
> > >
> > > greg k-h's patch email bot
> >
> > Thank you Neal for the patch. I tried the fix on my CMM (AST2500) and Fuji
> > (AST2600) BMC and it works on both platforms.
> >
> > Can you please address Greg's comments above and send out a new version?
> > BTW, please don't forget to include Alan's Acked-by in the new version.
> >
> > Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
> > Tested-by: Tao Ren <rentao.bupt@gmail.com>
> >
> >
> > Cheers,
> >
> > Tao
>
> Sure! I'll try to fix Greg's comments on next patch. I think the problem is the first one.
> And thanks for your review & test.
Both problems are real, please fix them.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 16+ messages in thread* RE: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
2021-09-09 6:38 ` Greg Kroah-Hartman
@ 2021-09-09 10:42 ` Neal Liu
-1 siblings, 0 replies; 16+ messages in thread
From: Neal Liu @ 2021-09-09 10:42 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Tao Ren, Alan Stern, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, BMC-SW
> -----Original Message-----
> From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Sent: Thursday, September 9, 2021 2:39 PM
> To: Neal Liu <neal_liu@aspeedtech.com>
> Cc: Tao Ren <rentao.bupt@gmail.com>; Alan Stern
> <stern@rowland.harvard.edu>; Tony Prisk <linux@prisktech.co.nz>;
> linux-usb@vger.kernel.org; linux-kernel@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; BMC-SW <BMC-SW@aspeedtech.com>
> Subject: Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
>
> On Thu, Sep 09, 2021 at 06:23:10AM +0000, Neal Liu wrote:
> >
> > > Hi Neal,
> > >
> > > On Wed, Sep 01, 2021 at 08:07:53AM +0200, Greg Kroah-Hartman wrote:
> > > > On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > > > > Retitle.
> > > > >
> > > > > For Aspeed, HCHalted status depends on not only Run/Stop but
> > > > > also ASS/PSS status.
> > > > > Handshake CMD_RUN on startup instead.
> > > > >
> > > > > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> > > > > ---
> > > > > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > > > > drivers/usb/host/ehci-platform.c | 6 ++++++
> > > > > drivers/usb/host/ehci.h | 1 +
> > > > > 3 files changed, 17 insertions(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/drivers/usb/host/ehci-hcd.c
> > > > > b/drivers/usb/host/ehci-hcd.c index 10b0365f3439..01c022e46aa2
> > > > > 100644
> > > > > --- a/drivers/usb/host/ehci-hcd.c
> > > > > +++ b/drivers/usb/host/ehci-hcd.c
> > > > > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > > > > /* Wait until HC become operational */
> > > > > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes
> > > */
> > > > > msleep(5);
> > > > > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 *
> 1000);
> > > > > +
> > > > > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > > > > + * Skip this check on startup.
> > > > > + */
> > > > > + if (ehci->is_aspeed)
> > > > > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > > > > + 1, 100 * 1000);
> > > > > + else
> > > > > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > > > > + 0, 100 * 1000);
> > > > >
> > > > > up_write(&ehci_cf_port_reset_rwsem);
> > > > >
> > > > > diff --git a/drivers/usb/host/ehci-platform.c
> > > > > b/drivers/usb/host/ehci-platform.c
> > > > > index c70f2d0b4aaf..c3dc906274d9 100644
> > > > > --- a/drivers/usb/host/ehci-platform.c
> > > > > +++ b/drivers/usb/host/ehci-platform.c
> > > > > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct
> > > platform_device *dev)
> > > > > "has-transaction-translator"))
> > > > > hcd->has_tt = 1;
> > > > >
> > > > > + if (of_device_is_compatible(dev->dev.of_node,
> > > > > + "aspeed,ast2500-ehci") ||
> > > > > + of_device_is_compatible(dev->dev.of_node,
> > > > > + "aspeed,ast2600-ehci"))
> > > > > + ehci->is_aspeed = 1;
> > > > > +
> > > > > if (soc_device_match(quirk_poll_match))
> > > > > priv->quirk_poll = true;
> > > > >
> > > > > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
> > > > > index 80bb823aa9fe..fdd073cc053b 100644
> > > > > --- a/drivers/usb/host/ehci.h
> > > > > +++ b/drivers/usb/host/ehci.h
> > > > > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per
> > > controller */
> > > > > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > > > > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > > > > unsigned spurious_oc:1;
> > > > > + unsigned is_aspeed:1;
> > > > >
> > > > > /* required for usb32 quirk */
> > > > > #define OHCI_CTRL_HCFS (3 << 6)
> > > > > --
> > > > > 2.17.1
> > > > >
> > > >
> > > > Hi,
> > > >
> > > > This is the friendly patch-bot of Greg Kroah-Hartman. You have
> > > > sent him a patch that has triggered this response. He used to
> > > > manually respond to these common problems, but in order to save
> > > > his sanity (he kept writing the same thing over and over, yet to
> > > > different people), I was created. Hopefully you will not take
> > > > offence and will fix the problem in your patch and resubmit it so
> > > > that it can be accepted into the Linux kernel tree.
> > > >
> > > > You are receiving this message because of the following common
> > > > error(s) as indicated below:
> > > >
> > > > - It looks like you did not use your "real" name for the patch on either
> > > > the Signed-off-by: line, or the From: line (both of which have to
> > > > match). Please read the kernel file,
> Documentation/SubmittingPatches
> > > > for how to do this correctly.
> > > >
> > > > - This looks like a new version of a previously submitted patch, but you
> > > > did not list below the --- line any changes from the previous version.
> > > > Please read the section entitled "The canonical patch format" in the
> > > > kernel file, Documentation/SubmittingPatches for what needs to be
> done
> > > > here to properly describe this.
> > > >
> > > > If you wish to discuss this problem further, or you have questions
> > > > about how to resolve this issue, please feel free to respond to
> > > > this email and Greg will reply once he has dug out from the
> > > > pending patches received from other developers.
> > > >
> > > > thanks,
> > > >
> > > > greg k-h's patch email bot
> > >
> > > Thank you Neal for the patch. I tried the fix on my CMM (AST2500)
> > > and Fuji
> > > (AST2600) BMC and it works on both platforms.
> > >
> > > Can you please address Greg's comments above and send out a new
> version?
> > > BTW, please don't forget to include Alan's Acked-by in the new version.
> > >
> > > Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
> > > Tested-by: Tao Ren <rentao.bupt@gmail.com>
> > >
> > >
> > > Cheers,
> > >
> > > Tao
> >
> > Sure! I'll try to fix Greg's comments on next patch. I think the problem is the
> first one.
> > And thanks for your review & test.
>
> Both problems are real, please fix them.
Thanks for pointing out.
^ permalink raw reply [flat|nested] 16+ messages in thread* RE: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
@ 2021-09-09 10:42 ` Neal Liu
0 siblings, 0 replies; 16+ messages in thread
From: Neal Liu @ 2021-09-09 10:42 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Tao Ren, Alan Stern, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, BMC-SW
> -----Original Message-----
> From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Sent: Thursday, September 9, 2021 2:39 PM
> To: Neal Liu <neal_liu@aspeedtech.com>
> Cc: Tao Ren <rentao.bupt@gmail.com>; Alan Stern
> <stern@rowland.harvard.edu>; Tony Prisk <linux@prisktech.co.nz>;
> linux-usb@vger.kernel.org; linux-kernel@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; BMC-SW <BMC-SW@aspeedtech.com>
> Subject: Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
>
> On Thu, Sep 09, 2021 at 06:23:10AM +0000, Neal Liu wrote:
> >
> > > Hi Neal,
> > >
> > > On Wed, Sep 01, 2021 at 08:07:53AM +0200, Greg Kroah-Hartman wrote:
> > > > On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > > > > Retitle.
> > > > >
> > > > > For Aspeed, HCHalted status depends on not only Run/Stop but
> > > > > also ASS/PSS status.
> > > > > Handshake CMD_RUN on startup instead.
> > > > >
> > > > > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
> > > > > ---
> > > > > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > > > > drivers/usb/host/ehci-platform.c | 6 ++++++
> > > > > drivers/usb/host/ehci.h | 1 +
> > > > > 3 files changed, 17 insertions(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/drivers/usb/host/ehci-hcd.c
> > > > > b/drivers/usb/host/ehci-hcd.c index 10b0365f3439..01c022e46aa2
> > > > > 100644
> > > > > --- a/drivers/usb/host/ehci-hcd.c
> > > > > +++ b/drivers/usb/host/ehci-hcd.c
> > > > > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > > > > /* Wait until HC become operational */
> > > > > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes
> > > */
> > > > > msleep(5);
> > > > > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 *
> 1000);
> > > > > +
> > > > > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > > > > + * Skip this check on startup.
> > > > > + */
> > > > > + if (ehci->is_aspeed)
> > > > > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > > > > + 1, 100 * 1000);
> > > > > + else
> > > > > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > > > > + 0, 100 * 1000);
> > > > >
> > > > > up_write(&ehci_cf_port_reset_rwsem);
> > > > >
> > > > > diff --git a/drivers/usb/host/ehci-platform.c
> > > > > b/drivers/usb/host/ehci-platform.c
> > > > > index c70f2d0b4aaf..c3dc906274d9 100644
> > > > > --- a/drivers/usb/host/ehci-platform.c
> > > > > +++ b/drivers/usb/host/ehci-platform.c
> > > > > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct
> > > platform_device *dev)
> > > > > "has-transaction-translator"))
> > > > > hcd->has_tt = 1;
> > > > >
> > > > > + if (of_device_is_compatible(dev->dev.of_node,
> > > > > + "aspeed,ast2500-ehci") ||
> > > > > + of_device_is_compatible(dev->dev.of_node,
> > > > > + "aspeed,ast2600-ehci"))
> > > > > + ehci->is_aspeed = 1;
> > > > > +
> > > > > if (soc_device_match(quirk_poll_match))
> > > > > priv->quirk_poll = true;
> > > > >
> > > > > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
> > > > > index 80bb823aa9fe..fdd073cc053b 100644
> > > > > --- a/drivers/usb/host/ehci.h
> > > > > +++ b/drivers/usb/host/ehci.h
> > > > > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per
> > > controller */
> > > > > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > > > > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > > > > unsigned spurious_oc:1;
> > > > > + unsigned is_aspeed:1;
> > > > >
> > > > > /* required for usb32 quirk */
> > > > > #define OHCI_CTRL_HCFS (3 << 6)
> > > > > --
> > > > > 2.17.1
> > > > >
> > > >
> > > > Hi,
> > > >
> > > > This is the friendly patch-bot of Greg Kroah-Hartman. You have
> > > > sent him a patch that has triggered this response. He used to
> > > > manually respond to these common problems, but in order to save
> > > > his sanity (he kept writing the same thing over and over, yet to
> > > > different people), I was created. Hopefully you will not take
> > > > offence and will fix the problem in your patch and resubmit it so
> > > > that it can be accepted into the Linux kernel tree.
> > > >
> > > > You are receiving this message because of the following common
> > > > error(s) as indicated below:
> > > >
> > > > - It looks like you did not use your "real" name for the patch on either
> > > > the Signed-off-by: line, or the From: line (both of which have to
> > > > match). Please read the kernel file,
> Documentation/SubmittingPatches
> > > > for how to do this correctly.
> > > >
> > > > - This looks like a new version of a previously submitted patch, but you
> > > > did not list below the --- line any changes from the previous version.
> > > > Please read the section entitled "The canonical patch format" in the
> > > > kernel file, Documentation/SubmittingPatches for what needs to be
> done
> > > > here to properly describe this.
> > > >
> > > > If you wish to discuss this problem further, or you have questions
> > > > about how to resolve this issue, please feel free to respond to
> > > > this email and Greg will reply once he has dug out from the
> > > > pending patches received from other developers.
> > > >
> > > > thanks,
> > > >
> > > > greg k-h's patch email bot
> > >
> > > Thank you Neal for the patch. I tried the fix on my CMM (AST2500)
> > > and Fuji
> > > (AST2600) BMC and it works on both platforms.
> > >
> > > Can you please address Greg's comments above and send out a new
> version?
> > > BTW, please don't forget to include Alan's Acked-by in the new version.
> > >
> > > Reviewed-by: Tao Ren <rentao.bupt@gmail.com>
> > > Tested-by: Tao Ren <rentao.bupt@gmail.com>
> > >
> > >
> > > Cheers,
> > >
> > > Tao
> >
> > Sure! I'll try to fix Greg's comments on next patch. I think the problem is the
> first one.
> > And thanks for your review & test.
>
> Both problems are real, please fix them.
Thanks for pointing out.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
2021-09-01 3:50 ` neal_liu
@ 2021-09-01 16:41 ` Alan Stern
-1 siblings, 0 replies; 16+ messages in thread
From: Alan Stern @ 2021-09-01 16:41 UTC (permalink / raw)
To: neal_liu
Cc: Greg Kroah-Hartman, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, Tao Ren, BMC-SW
On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> Retitle.
>
> For Aspeed, HCHalted status depends on not only Run/Stop but also
> ASS/PSS status.
> Handshake CMD_RUN on startup instead.
>
> Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
I'm still a little doubtful about doing this, but if you guys say it works
for your hardware then I guess it's okay.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
> ---
> drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> drivers/usb/host/ehci-platform.c | 6 ++++++
> drivers/usb/host/ehci.h | 1 +
> 3 files changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> index 10b0365f3439..01c022e46aa2 100644
> --- a/drivers/usb/host/ehci-hcd.c
> +++ b/drivers/usb/host/ehci-hcd.c
> @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> /* Wait until HC become operational */
> ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
> msleep(5);
> - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> +
> + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> + * Skip this check on startup.
> + */
> + if (ehci->is_aspeed)
> + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> + 1, 100 * 1000);
> + else
> + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> + 0, 100 * 1000);
>
> up_write(&ehci_cf_port_reset_rwsem);
>
> diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
> index c70f2d0b4aaf..c3dc906274d9 100644
> --- a/drivers/usb/host/ehci-platform.c
> +++ b/drivers/usb/host/ehci-platform.c
> @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct platform_device *dev)
> "has-transaction-translator"))
> hcd->has_tt = 1;
>
> + if (of_device_is_compatible(dev->dev.of_node,
> + "aspeed,ast2500-ehci") ||
> + of_device_is_compatible(dev->dev.of_node,
> + "aspeed,ast2600-ehci"))
> + ehci->is_aspeed = 1;
> +
> if (soc_device_match(quirk_poll_match))
> priv->quirk_poll = true;
>
> diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
> index 80bb823aa9fe..fdd073cc053b 100644
> --- a/drivers/usb/host/ehci.h
> +++ b/drivers/usb/host/ehci.h
> @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
> unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> unsigned spurious_oc:1;
> + unsigned is_aspeed:1;
>
> /* required for usb32 quirk */
> #define OHCI_CTRL_HCFS (3 << 6)
> --
> 2.17.1
>
^ permalink raw reply [flat|nested] 16+ messages in thread* Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
@ 2021-09-01 16:41 ` Alan Stern
0 siblings, 0 replies; 16+ messages in thread
From: Alan Stern @ 2021-09-01 16:41 UTC (permalink / raw)
To: neal_liu
Cc: Greg Kroah-Hartman, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, Tao Ren, BMC-SW
On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> Retitle.
>
> For Aspeed, HCHalted status depends on not only Run/Stop but also
> ASS/PSS status.
> Handshake CMD_RUN on startup instead.
>
> Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
I'm still a little doubtful about doing this, but if you guys say it works
for your hardware then I guess it's okay.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
> ---
> drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> drivers/usb/host/ehci-platform.c | 6 ++++++
> drivers/usb/host/ehci.h | 1 +
> 3 files changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> index 10b0365f3439..01c022e46aa2 100644
> --- a/drivers/usb/host/ehci-hcd.c
> +++ b/drivers/usb/host/ehci-hcd.c
> @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> /* Wait until HC become operational */
> ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
> msleep(5);
> - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> +
> + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> + * Skip this check on startup.
> + */
> + if (ehci->is_aspeed)
> + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> + 1, 100 * 1000);
> + else
> + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> + 0, 100 * 1000);
>
> up_write(&ehci_cf_port_reset_rwsem);
>
> diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
> index c70f2d0b4aaf..c3dc906274d9 100644
> --- a/drivers/usb/host/ehci-platform.c
> +++ b/drivers/usb/host/ehci-platform.c
> @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct platform_device *dev)
> "has-transaction-translator"))
> hcd->has_tt = 1;
>
> + if (of_device_is_compatible(dev->dev.of_node,
> + "aspeed,ast2500-ehci") ||
> + of_device_is_compatible(dev->dev.of_node,
> + "aspeed,ast2600-ehci"))
> + ehci->is_aspeed = 1;
> +
> if (soc_device_match(quirk_poll_match))
> priv->quirk_poll = true;
>
> diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
> index 80bb823aa9fe..fdd073cc053b 100644
> --- a/drivers/usb/host/ehci.h
> +++ b/drivers/usb/host/ehci.h
> @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
> unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> unsigned spurious_oc:1;
> + unsigned is_aspeed:1;
>
> /* required for usb32 quirk */
> #define OHCI_CTRL_HCFS (3 << 6)
> --
> 2.17.1
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 16+ messages in thread* RE: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
2021-09-01 16:41 ` Alan Stern
@ 2021-09-02 1:52 ` Neal Liu
-1 siblings, 0 replies; 16+ messages in thread
From: Neal Liu @ 2021-09-02 1:52 UTC (permalink / raw)
To: Alan Stern
Cc: Greg Kroah-Hartman, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, Tao Ren, BMC-SW
> -----Original Message-----
> From: Alan Stern <stern@rowland.harvard.edu>
> Sent: Thursday, September 2, 2021 12:41 AM
> To: Neal Liu <neal_liu@aspeedtech.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>; Tony Prisk
> <linux@prisktech.co.nz>; linux-usb@vger.kernel.org;
> linux-kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org; Tao Ren
> <rentao.bupt@gmail.com>; BMC-SW <BMC-SW@aspeedtech.com>
> Subject: Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
>
> On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > Retitle.
> >
> > For Aspeed, HCHalted status depends on not only Run/Stop but also
> > ASS/PSS status.
> > Handshake CMD_RUN on startup instead.
> >
> > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
>
> I'm still a little doubtful about doing this, but if you guys say it works for your
> hardware then I guess it's okay.
>
> Acked-by: Alan Stern <stern@rowland.harvard.edu>
Thanks for your review.
> > ---
> > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > drivers/usb/host/ehci-platform.c | 6 ++++++
> > drivers/usb/host/ehci.h | 1 +
> > 3 files changed, 17 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> > index 10b0365f3439..01c022e46aa2 100644
> > --- a/drivers/usb/host/ehci-hcd.c
> > +++ b/drivers/usb/host/ehci-hcd.c
> > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > /* Wait until HC become operational */
> > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
> > msleep(5);
> > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> > +
> > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > + * Skip this check on startup.
> > + */
> > + if (ehci->is_aspeed)
> > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > + 1, 100 * 1000);
> > + else
> > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > + 0, 100 * 1000);
> >
> > up_write(&ehci_cf_port_reset_rwsem);
> >
> > diff --git a/drivers/usb/host/ehci-platform.c
> > b/drivers/usb/host/ehci-platform.c
> > index c70f2d0b4aaf..c3dc906274d9 100644
> > --- a/drivers/usb/host/ehci-platform.c
> > +++ b/drivers/usb/host/ehci-platform.c
> > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct
> platform_device *dev)
> > "has-transaction-translator"))
> > hcd->has_tt = 1;
> >
> > + if (of_device_is_compatible(dev->dev.of_node,
> > + "aspeed,ast2500-ehci") ||
> > + of_device_is_compatible(dev->dev.of_node,
> > + "aspeed,ast2600-ehci"))
> > + ehci->is_aspeed = 1;
> > +
> > if (soc_device_match(quirk_poll_match))
> > priv->quirk_poll = true;
> >
> > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index
> > 80bb823aa9fe..fdd073cc053b 100644
> > --- a/drivers/usb/host/ehci.h
> > +++ b/drivers/usb/host/ehci.h
> > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
> > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > unsigned spurious_oc:1;
> > + unsigned is_aspeed:1;
> >
> > /* required for usb32 quirk */
> > #define OHCI_CTRL_HCFS (3 << 6)
> > --
> > 2.17.1
> >
^ permalink raw reply [flat|nested] 16+ messages in thread* RE: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
@ 2021-09-02 1:52 ` Neal Liu
0 siblings, 0 replies; 16+ messages in thread
From: Neal Liu @ 2021-09-02 1:52 UTC (permalink / raw)
To: Alan Stern
Cc: Greg Kroah-Hartman, Tony Prisk, linux-usb, linux-kernel,
linux-arm-kernel, Tao Ren, BMC-SW
> -----Original Message-----
> From: Alan Stern <stern@rowland.harvard.edu>
> Sent: Thursday, September 2, 2021 12:41 AM
> To: Neal Liu <neal_liu@aspeedtech.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>; Tony Prisk
> <linux@prisktech.co.nz>; linux-usb@vger.kernel.org;
> linux-kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org; Tao Ren
> <rentao.bupt@gmail.com>; BMC-SW <BMC-SW@aspeedtech.com>
> Subject: Re: [PATCH v2] usb: ehci: handshake CMD_RUN instead of STS_HALT
>
> On Wed, Sep 01, 2021 at 11:50:41AM +0800, neal_liu wrote:
> > Retitle.
> >
> > For Aspeed, HCHalted status depends on not only Run/Stop but also
> > ASS/PSS status.
> > Handshake CMD_RUN on startup instead.
> >
> > Signed-off-by: neal_liu <neal_liu@aspeedtech.com>
>
> I'm still a little doubtful about doing this, but if you guys say it works for your
> hardware then I guess it's okay.
>
> Acked-by: Alan Stern <stern@rowland.harvard.edu>
Thanks for your review.
> > ---
> > drivers/usb/host/ehci-hcd.c | 11 ++++++++++-
> > drivers/usb/host/ehci-platform.c | 6 ++++++
> > drivers/usb/host/ehci.h | 1 +
> > 3 files changed, 17 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> > index 10b0365f3439..01c022e46aa2 100644
> > --- a/drivers/usb/host/ehci-hcd.c
> > +++ b/drivers/usb/host/ehci-hcd.c
> > @@ -634,7 +634,16 @@ static int ehci_run (struct usb_hcd *hcd)
> > /* Wait until HC become operational */
> > ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
> > msleep(5);
> > - rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT, 0, 100 * 1000);
> > +
> > + /* For Aspeed, STS_HALT also depends on ASS/PSS status.
> > + * Skip this check on startup.
> > + */
> > + if (ehci->is_aspeed)
> > + rc = ehci_handshake(ehci, &ehci->regs->command, CMD_RUN,
> > + 1, 100 * 1000);
> > + else
> > + rc = ehci_handshake(ehci, &ehci->regs->status, STS_HALT,
> > + 0, 100 * 1000);
> >
> > up_write(&ehci_cf_port_reset_rwsem);
> >
> > diff --git a/drivers/usb/host/ehci-platform.c
> > b/drivers/usb/host/ehci-platform.c
> > index c70f2d0b4aaf..c3dc906274d9 100644
> > --- a/drivers/usb/host/ehci-platform.c
> > +++ b/drivers/usb/host/ehci-platform.c
> > @@ -297,6 +297,12 @@ static int ehci_platform_probe(struct
> platform_device *dev)
> > "has-transaction-translator"))
> > hcd->has_tt = 1;
> >
> > + if (of_device_is_compatible(dev->dev.of_node,
> > + "aspeed,ast2500-ehci") ||
> > + of_device_is_compatible(dev->dev.of_node,
> > + "aspeed,ast2600-ehci"))
> > + ehci->is_aspeed = 1;
> > +
> > if (soc_device_match(quirk_poll_match))
> > priv->quirk_poll = true;
> >
> > diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index
> > 80bb823aa9fe..fdd073cc053b 100644
> > --- a/drivers/usb/host/ehci.h
> > +++ b/drivers/usb/host/ehci.h
> > @@ -219,6 +219,7 @@ struct ehci_hcd { /* one per controller */
> > unsigned need_oc_pp_cycle:1; /* MPC834X port power */
> > unsigned imx28_write_fix:1; /* For Freescale i.MX28 */
> > unsigned spurious_oc:1;
> > + unsigned is_aspeed:1;
> >
> > /* required for usb32 quirk */
> > #define OHCI_CTRL_HCFS (3 << 6)
> > --
> > 2.17.1
> >
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^ permalink raw reply [flat|nested] 16+ messages in thread