* [PATCH] arm: a37xx: pci: Fix condition for CRS response
@ 2021-10-19 9:05 Pali Rohár
2021-10-20 9:51 ` Stefan Roese
2021-10-21 7:48 ` Stefan Roese
0 siblings, 2 replies; 3+ messages in thread
From: Pali Rohár @ 2021-10-19 9:05 UTC (permalink / raw)
To: Stefan Roese; +Cc: Konstantin Porotchkin, u-boot
As stated in comment above the code, CRS response can be returned to OS
only for 4-byte PCI_VENDOR_ID config read request. So fix the code.
Fixes: 1d7ad68559e2 ("arm: a37xx: pci: Handle propagation of CRSSVE bit from PCIe Root Port")
Signed-off-by: Pali Rohár <pali@kernel.org>
---
drivers/pci/pci-aardvark.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c
index ade5ab056f84..9e623b6e617b 100644
--- a/drivers/pci/pci-aardvark.c
+++ b/drivers/pci/pci-aardvark.c
@@ -445,7 +445,7 @@ static int pcie_advk_read_config(const struct udevice *bus, pci_dev_t bdf,
* for returning CRS, so that if U-Boot does support CRS in the future,
* it will work for Aardvark.
*/
- allow_crs = pcie->cfgcrssve;
+ allow_crs = (offset == PCI_VENDOR_ID) && (size == PCI_SIZE_32) && pcie->cfgcrssve;
if (advk_readl(pcie, PIO_START)) {
dev_err(pcie->dev,
--
2.20.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] arm: a37xx: pci: Fix condition for CRS response
2021-10-19 9:05 [PATCH] arm: a37xx: pci: Fix condition for CRS response Pali Rohár
@ 2021-10-20 9:51 ` Stefan Roese
2021-10-21 7:48 ` Stefan Roese
1 sibling, 0 replies; 3+ messages in thread
From: Stefan Roese @ 2021-10-20 9:51 UTC (permalink / raw)
To: Pali Rohár; +Cc: Konstantin Porotchkin, u-boot
On 19.10.21 11:05, Pali Rohár wrote:
> As stated in comment above the code, CRS response can be returned to OS
> only for 4-byte PCI_VENDOR_ID config read request. So fix the code.
>
> Fixes: 1d7ad68559e2 ("arm: a37xx: pci: Handle propagation of CRSSVE bit from PCIe Root Port")
> Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Thanks,
Stefan
> ---
> drivers/pci/pci-aardvark.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c
> index ade5ab056f84..9e623b6e617b 100644
> --- a/drivers/pci/pci-aardvark.c
> +++ b/drivers/pci/pci-aardvark.c
> @@ -445,7 +445,7 @@ static int pcie_advk_read_config(const struct udevice *bus, pci_dev_t bdf,
> * for returning CRS, so that if U-Boot does support CRS in the future,
> * it will work for Aardvark.
> */
> - allow_crs = pcie->cfgcrssve;
> + allow_crs = (offset == PCI_VENDOR_ID) && (size == PCI_SIZE_32) && pcie->cfgcrssve;
>
> if (advk_readl(pcie, PIO_START)) {
> dev_err(pcie->dev,
>
Viele Grüße,
Stefan
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: sr@denx.de
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] arm: a37xx: pci: Fix condition for CRS response
2021-10-19 9:05 [PATCH] arm: a37xx: pci: Fix condition for CRS response Pali Rohár
2021-10-20 9:51 ` Stefan Roese
@ 2021-10-21 7:48 ` Stefan Roese
1 sibling, 0 replies; 3+ messages in thread
From: Stefan Roese @ 2021-10-21 7:48 UTC (permalink / raw)
To: Pali Rohár; +Cc: Konstantin Porotchkin, u-boot
On 19.10.21 11:05, Pali Rohár wrote:
> As stated in comment above the code, CRS response can be returned to OS
> only for 4-byte PCI_VENDOR_ID config read request. So fix the code.
>
> Fixes: 1d7ad68559e2 ("arm: a37xx: pci: Handle propagation of CRSSVE bit from PCIe Root Port")
> Signed-off-by: Pali Rohár <pali@kernel.org>
Applied to u-boot-marvell/master
Thanks,
Stefan
> ---
> drivers/pci/pci-aardvark.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c
> index ade5ab056f84..9e623b6e617b 100644
> --- a/drivers/pci/pci-aardvark.c
> +++ b/drivers/pci/pci-aardvark.c
> @@ -445,7 +445,7 @@ static int pcie_advk_read_config(const struct udevice *bus, pci_dev_t bdf,
> * for returning CRS, so that if U-Boot does support CRS in the future,
> * it will work for Aardvark.
> */
> - allow_crs = pcie->cfgcrssve;
> + allow_crs = (offset == PCI_VENDOR_ID) && (size == PCI_SIZE_32) && pcie->cfgcrssve;
>
> if (advk_readl(pcie, PIO_START)) {
> dev_err(pcie->dev,
>
Viele Grüße,
Stefan
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: sr@denx.de
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-10-19 9:05 [PATCH] arm: a37xx: pci: Fix condition for CRS response Pali Rohár
2021-10-20 9:51 ` Stefan Roese
2021-10-21 7:48 ` Stefan Roese
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