* [PATCH v5] usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
@ 2021-05-27 15:45 Mario Limonciello
2021-06-02 15:03 ` Greg Kroah-Hartman
0 siblings, 1 reply; 3+ messages in thread
From: Mario Limonciello @ 2021-05-27 15:45 UTC (permalink / raw)
To: Mathias Nyman, Greg Kroah-Hartman
Cc: open list:USB XHCI DRIVER, Mario Limonciello, Prike Liang
The XHCI controller is required to enter D3hot rather than D3cold for AMD
s2idle on this hardware generation.
Otherwise, the 'Controller Not Ready' (CNR) bit is not being cleared by
host in resume and eventually this results in xhci resume failures during
the s2idle wakeup.
Suggested-by: Prike Liang <Prike.Liang@amd.com>
Link: https://lore.kernel.org/linux-usb/1612527609-7053-1-git-send-email-Prike.Liang@amd.com/
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
drivers/usb/host/xhci-pci.c | 7 ++++++-
drivers/usb/host/xhci.h | 1 +
2 files changed, 7 insertions(+), 1 deletion(-)
v1 -> v2: drop the XHCI_COMP_MODE_QUIRK quirk and create a new one for handling
XHCI D3cold.
v2 -> v3: correct the quirk name typo XHCI_AMD_S2IDL_SUPPORT_QUIRK -> XHCI_AMD_S2IDLE_SUPPORT_QUIRK
v3 -> v4: Fix commit message to clarify and reference HW
Rename quirk to describe problem, not hardware
Add definition for the hardware to source
v4 -> v5: Correct a typographical error
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 7bc18cf8042c..18c2bbddf080 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -59,6 +59,7 @@
#define PCI_DEVICE_ID_INTEL_MAPLE_RIDGE_XHCI 0x1138
#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_XHCI 0x461e
+#define PCI_DEVICE_ID_AMD_RENOIR_XHCI 0x1639
#define PCI_DEVICE_ID_AMD_PROMONTORYA_4 0x43b9
#define PCI_DEVICE_ID_AMD_PROMONTORYA_3 0x43ba
#define PCI_DEVICE_ID_AMD_PROMONTORYA_2 0x43bb
@@ -182,6 +183,10 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
(pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
xhci->quirks |= XHCI_U2_DISABLE_WAKE;
+ if (pdev->vendor == PCI_VENDOR_ID_AMD &&
+ pdev->device == PCI_DEVICE_ID_AMD_RENOIR_XHCI)
+ xhci->quirks |= XHCI_BROKEN_D3COLD;
+
if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
xhci->quirks |= XHCI_LPM_SUPPORT;
xhci->quirks |= XHCI_INTEL_HOST;
@@ -539,7 +544,7 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
* Systems with the TI redriver that loses port status change events
* need to have the registers polled during D3, so avoid D3cold.
*/
- if (xhci->quirks & XHCI_COMP_MODE_QUIRK)
+ if (xhci->quirks & (XHCI_COMP_MODE_QUIRK | XHCI_BROKEN_D3COLD))
pci_d3cold_disable(pdev);
if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 2595a8f057c4..e417f5ce13d1 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1892,6 +1892,7 @@ struct xhci_hcd {
#define XHCI_DISABLE_SPARSE BIT_ULL(38)
#define XHCI_SG_TRB_CACHE_SIZE_QUIRK BIT_ULL(39)
#define XHCI_NO_SOFT_RETRY BIT_ULL(40)
+#define XHCI_BROKEN_D3COLD BIT_ULL(41)
unsigned int num_active_eps;
unsigned int limit_active_eps;
--
2.25.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v5] usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
2021-05-27 15:45 [PATCH v5] usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir Mario Limonciello
@ 2021-06-02 15:03 ` Greg Kroah-Hartman
2021-06-02 15:13 ` Limonciello, Mario
0 siblings, 1 reply; 3+ messages in thread
From: Greg Kroah-Hartman @ 2021-06-02 15:03 UTC (permalink / raw)
To: Mario Limonciello; +Cc: Mathias Nyman, open list:USB XHCI DRIVER, Prike Liang
On Thu, May 27, 2021 at 10:45:34AM -0500, Mario Limonciello wrote:
> The XHCI controller is required to enter D3hot rather than D3cold for AMD
> s2idle on this hardware generation.
>
> Otherwise, the 'Controller Not Ready' (CNR) bit is not being cleared by
> host in resume and eventually this results in xhci resume failures during
> the s2idle wakeup.
>
> Suggested-by: Prike Liang <Prike.Liang@amd.com>
> Link: https://lore.kernel.org/linux-usb/1612527609-7053-1-git-send-email-Prike.Liang@amd.com/
> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
> ---
> drivers/usb/host/xhci-pci.c | 7 ++++++-
> drivers/usb/host/xhci.h | 1 +
> 2 files changed, 7 insertions(+), 1 deletion(-)
Should it go to stable kernels, and if so, how far back?
thanks,
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v5] usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir
2021-06-02 15:03 ` Greg Kroah-Hartman
@ 2021-06-02 15:13 ` Limonciello, Mario
0 siblings, 0 replies; 3+ messages in thread
From: Limonciello, Mario @ 2021-06-02 15:13 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: Mathias Nyman, open list:USB XHCI DRIVER, Prike Liang
On 6/2/2021 10:03, Greg Kroah-Hartman wrote:
> On Thu, May 27, 2021 at 10:45:34AM -0500, Mario Limonciello wrote:
>> The XHCI controller is required to enter D3hot rather than D3cold for AMD
>> s2idle on this hardware generation.
>>
>> Otherwise, the 'Controller Not Ready' (CNR) bit is not being cleared by
>> host in resume and eventually this results in xhci resume failures during
>> the s2idle wakeup.
>>
>> Suggested-by: Prike Liang <Prike.Liang@amd.com>
>> Link: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Flinux-usb%2F1612527609-7053-1-git-send-email-Prike.Liang%40amd.com%2F&data=04%7C01%7Cmario.limonciello%40amd.com%7C07d80c804533439da6ad08d925d798a8%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637582430177777264%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=uV%2FMr7rXtBVzNmEBg%2FrIoXVKfLAjdQOO4rkR8DrdhBw%3D&reserved=0
>> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
>> ---
>> drivers/usb/host/xhci-pci.c | 7 ++++++-
>> drivers/usb/host/xhci.h | 1 +
>> 2 files changed, 7 insertions(+), 1 deletion(-)
>
> Should it go to stable kernels, and if so, how far back?
>
> thanks,
>
> greg k-h
>
Sure, as far back as 5.11 makes sense to me.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-05-27 15:45 [PATCH v5] usb: pci-quirks: disable D3cold on xhci suspend for s2idle on AMD Renoir Mario Limonciello
2021-06-02 15:03 ` Greg Kroah-Hartman
2021-06-02 15:13 ` Limonciello, Mario
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