linux-nvme.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
* [PATCH 1/2] PCI: add AMD PCIe quirk for nvme shutdown opt
@ 2021-04-14  8:18 Prike Liang
  2021-04-14  8:18 ` [PATCH 2/2] nvme-pci: add AMD PCIe quirk for suspend/resume Prike Liang
  2021-04-14  8:39 ` [PATCH 1/2] PCI: add AMD PCIe quirk for nvme shutdown opt Greg KH
  0 siblings, 2 replies; 10+ messages in thread
From: Prike Liang @ 2021-04-14  8:18 UTC (permalink / raw)
  To: linux-nvme, kbusch, Chaitanya.Kulkarni, gregkh, hch
  Cc: stable, Shyam-sundar.S-k, Alexander.Deucher, Prike Liang,
	Chaitanya Kulkarni

The NVME device pluged in some AMD PCIE root port will resume timeout
from s2idle which caused by NVME power CFG lost in the SMU FW restore.
This issue can be workaround by using PCIe power set with simple
suspend/resume process path instead of APST. In the onwards ASIC will
try do the NVME shutdown save and restore in the BIOS and still need PCIe
power setting to resume from RTD3 for s2idle.

In this preparation patch add a PCIe quirk for the AMD.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
[ck: split patches for nvme and pcie]
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: <stable@vger.kernel.org> # 5.11+
---
 drivers/pci/quirks.c | 10 ++++++++++
 include/linux/pci.h  |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 653660e3..f95c8b2 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -312,6 +312,16 @@ static void quirk_nopciamd(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8151_0,	quirk_nopciamd);
 
+static void quirk_amd_nvme_fixup(struct pci_dev *dev)
+{
+	struct pci_dev *rdev;
+
+	dev->dev_flags |= PCI_DEV_FLAGS_AMD_NVME_SIMPLE_SUSPEND;
+	pci_info(dev, "AMD simple suspend opt enabled\n");
+
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1630, quirk_amd_nvme_fixup);
+
 /* Triton requires workarounds to be used by the drivers */
 static void quirk_triton(struct pci_dev *dev)
 {
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 53f4904..a6e1b1b 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -227,6 +227,8 @@ enum pci_dev_flags {
 	PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10),
 	/* Don't use Relaxed Ordering for TLPs directed at this device */
 	PCI_DEV_FLAGS_NO_RELAXED_ORDERING = (__force pci_dev_flags_t) (1 << 11),
+	/* AMD simple suspend opt quirk */
+	PCI_DEV_FLAGS_AMD_NVME_SIMPLE_SUSPEND = (__force pci_dev_flags_t) (1 << 12),
 };
 
 enum pci_irq_reroute_variant {
-- 
2.7.4


_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme

^ permalink raw reply related	[flat|nested] 10+ messages in thread
* [PATCH 1/2] PCI: add AMD PCIe quirk for nvme shutdown opt
@ 2021-04-14  6:19 Prike Liang
  0 siblings, 0 replies; 10+ messages in thread
From: Prike Liang @ 2021-04-14  6:19 UTC (permalink / raw)
  To: linux-nvme, kbusch, Chaitanya.Kulkarni, hch, gregkh
  Cc: Shyam-sundar.S-k, Alexander.Deucher, Prike Liang,
	Chaitanya Kulkarni, # 5 . 11+

The NVME device pluged in some AMD PCIE root port will resume timeout
from s2idle which caused by NVME power CFG lost in the SMU FW restore.
This issue can be workaround by using PCIe power set with simple
suspend/resume process path instead of APST. In the onwards ASIC will
try do the NVME shutdown save and restore in the BIOS and still need PCIe
power setting to resume from RTD3 for s2idle.

In this preparation patch add a PCIe quirk for the AMD.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
[ck: split patches for nvme and pcie]
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: <stable@vger.kernel.org> # 5.11+
---
 drivers/pci/quirks.c | 10 ++++++++++
 include/linux/pci.h  |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 653660e3..f95c8b2 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -312,6 +312,16 @@ static void quirk_nopciamd(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8151_0,	quirk_nopciamd);
 
+static void quirk_amd_nvme_fixup(struct pci_dev *dev)
+{
+	struct pci_dev *rdev;
+
+	dev->dev_flags |= PCI_DEV_FLAGS_AMD_NVME_SIMPLE_SUSPEND;
+	pci_info(dev, "AMD simple suspend opt enabled\n");
+
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1630, quirk_amd_nvme_fixup);
+
 /* Triton requires workarounds to be used by the drivers */
 static void quirk_triton(struct pci_dev *dev)
 {
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 53f4904..a6e1b1b 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -227,6 +227,8 @@ enum pci_dev_flags {
 	PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10),
 	/* Don't use Relaxed Ordering for TLPs directed at this device */
 	PCI_DEV_FLAGS_NO_RELAXED_ORDERING = (__force pci_dev_flags_t) (1 << 11),
+	/* AMD simple suspend opt quirk */
+	PCI_DEV_FLAGS_AMD_NVME_SIMPLE_SUSPEND = (__force pci_dev_flags_t) (1 << 12),
 };
 
 enum pci_irq_reroute_variant {
-- 
2.7.4


_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme

^ permalink raw reply related	[flat|nested] 10+ messages in thread
* [PATCH 1/2] PCI: add AMD PCIe quirk for nvme shutdown opt
@ 2021-04-14  2:18 Prike Liang
  0 siblings, 0 replies; 10+ messages in thread
From: Prike Liang @ 2021-04-14  2:18 UTC (permalink / raw)
  To: linux-nvme, kbusch, Chaitanya.Kulkarni, gregkh, hch
  Cc: stable, Shyam-sundar.S-k, Alexander.Deucher, Prike Liang,
	Chaitanya Kulkarni

The NVME device pluged in some AMD PCIE root port will resume timeout
from s2idle which caused by NVME power CFG lost in the SMU FW restore.
This issue can be workaround by using PCIe power set with simple
suspend/resume process path instead of APST. In the onwards ASIC will
try do the NVME shutdown save and restore in the BIOS and still need PCIe
power setting to resume from RTD3 for s2idle.

In this preparation patch add a PCIe quirk for the AMD.

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
[ck: split patches for nvme and pcie]
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Cc: <stable@vger.kernel.org> # 5.11+
---
 drivers/pci/quirks.c | 10 ++++++++++
 include/linux/pci.h  |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 653660e3..f95c8b2 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -312,6 +312,16 @@ static void quirk_nopciamd(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD,	PCI_DEVICE_ID_AMD_8151_0,	quirk_nopciamd);
 
+static void quirk_amd_nvme_fixup(struct pci_dev *dev)
+{
+	struct pci_dev *rdev;
+
+	dev->dev_flags |= PCI_DEV_FLAGS_AMD_NVME_SIMPLE_SUSPEND;
+	pci_info(dev, "AMD simple suspend opt enabled\n");
+
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1630, quirk_amd_nvme_fixup);
+
 /* Triton requires workarounds to be used by the drivers */
 static void quirk_triton(struct pci_dev *dev)
 {
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 53f4904..a6e1b1b 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -227,6 +227,8 @@ enum pci_dev_flags {
 	PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10),
 	/* Don't use Relaxed Ordering for TLPs directed at this device */
 	PCI_DEV_FLAGS_NO_RELAXED_ORDERING = (__force pci_dev_flags_t) (1 << 11),
+	/* AMD simple suspend opt quirk */
+	PCI_DEV_FLAGS_AMD_NVME_SIMPLE_SUSPEND = (__force pci_dev_flags_t) (1 << 12),
 };
 
 enum pci_irq_reroute_variant {
-- 
2.7.4


_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme

^ permalink raw reply related	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2021-04-15  6:15 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-04-14  8:18 [PATCH 1/2] PCI: add AMD PCIe quirk for nvme shutdown opt Prike Liang
2021-04-14  8:18 ` [PATCH 2/2] nvme-pci: add AMD PCIe quirk for suspend/resume Prike Liang
2021-04-14  8:39   ` Greg KH
2021-04-14 16:24   ` Keith Busch
2021-04-15  3:22     ` Liang, Prike
2021-04-15  3:59       ` Keith Busch
2021-04-15  6:14         ` Liang, Prike
2021-04-14  8:39 ` [PATCH 1/2] PCI: add AMD PCIe quirk for nvme shutdown opt Greg KH
  -- strict thread matches above, loose matches on Subject: below --
2021-04-14  6:19 Prike Liang
2021-04-14  2:18 Prike Liang

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).