146 lines
4.5 KiB
Diff
146 lines
4.5 KiB
Diff
From 0705499a65b8fdef3a2a375993b41cb8d3af8147 Mon Sep 17 00:00:00 2001
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From: Jake Day <jake@ninebysix.com>
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Date: Thu, 7 Mar 2019 11:53:42 -0500
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Subject: [PATCH 02/11] suspend
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---
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drivers/nvme/host/nvme.h | 5 +++++
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drivers/nvme/host/pci.c | 10 +++++++++-
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drivers/pci/quirks.c | 4 ++++
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include/linux/pci_ids.h | 2 ++
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kernel/power/suspend.c | 11 +++++++++++
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kernel/sysctl.c | 9 +++++++++
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6 files changed, 40 insertions(+), 1 deletion(-)
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diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
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index 60220de2db52..d49d7ccb71d3 100644
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--- a/drivers/nvme/host/nvme.h
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+++ b/drivers/nvme/host/nvme.h
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@@ -90,6 +90,11 @@ enum nvme_quirks {
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* Set MEDIUM priority on SQ creation
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*/
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NVME_QUIRK_MEDIUM_PRIO_SQ = (1 << 7),
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+
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+ /*
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+ * Do not disable nvme when suspending (s2idle)
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+ */
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+ NVME_QUIRK_NO_DISABLE = (1 << 8),
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};
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/*
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diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
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index f46313f441ec..68b63b160c9d 100644
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--- a/drivers/nvme/host/pci.c
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+++ b/drivers/nvme/host/pci.c
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@@ -30,6 +30,7 @@
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#include <linux/types.h>
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#include <linux/io-64-nonatomic-lo-hi.h>
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#include <linux/sed-opal.h>
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+#include <linux/suspend.h>
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#include "nvme.h"
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@@ -2595,8 +2596,11 @@ static int nvme_suspend(struct device *dev)
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{
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struct pci_dev *pdev = to_pci_dev(dev);
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struct nvme_dev *ndev = pci_get_drvdata(pdev);
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+ struct nvme_ctrl *ctrl = &ndev->ctrl;
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+
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+ if (!(pm_suspend_via_s2idle() && (ctrl->quirks & NVME_QUIRK_NO_DISABLE)))
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+ nvme_dev_disable(ndev, true);
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- nvme_dev_disable(ndev, true);
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return 0;
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}
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@@ -2700,6 +2704,10 @@ static const struct pci_device_id nvme_id_table[] = {
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.driver_data = NVME_QUIRK_LIGHTNVM, },
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{ PCI_DEVICE(0x1d1d, 0x2601), /* CNEX Granby */
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.driver_data = NVME_QUIRK_LIGHTNVM, },
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+ { PCI_VDEVICE(SK_HYNIX, 0x1527), /* Sk Hynix */
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+ .driver_data = NVME_QUIRK_NO_DISABLE, },
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+ { PCI_VDEVICE(TOSHIBA, 0x010f), /* TOSHIBA NVMe found on Surface Book with Performance Base */
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+ .driver_data = NVME_QUIRK_NO_DISABLE, },
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{ PCI_DEVICE_CLASS(PCI_CLASS_STORAGE_EXPRESS, 0xffffff) },
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{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2001) },
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{ PCI_DEVICE(PCI_VENDOR_ID_APPLE, 0x2003) },
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diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
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index c0673a717239..58cd0407c4ff 100644
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--- a/drivers/pci/quirks.c
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+++ b/drivers/pci/quirks.c
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@@ -1332,6 +1332,10 @@ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID,
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occur when mode detecting */
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DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID,
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PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3);
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+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SK_HYNIX, 0x1527, quirk_no_ata_d3);
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+/* TOSHIBA NVMe disk found on Surface Book with Performance Base
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+ cannot wakeup from D3 state after s2idle */
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+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_TOSHIBA, 0x010f, quirk_no_ata_d3);
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/*
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* This was originally an Alpha-specific thing, but it really fits here.
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diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
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index d157983b84cf..c9aaf755b649 100644
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--- a/include/linux/pci_ids.h
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+++ b/include/linux/pci_ids.h
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@@ -3086,4 +3086,6 @@
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#define PCI_VENDOR_ID_NCUBE 0x10ff
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+#define PCI_VENDOR_ID_SK_HYNIX 0x1c5c
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+
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#endif /* _LINUX_PCI_IDS_H */
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diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
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index 0bd595a0b610..a8385e8894a5 100644
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--- a/kernel/power/suspend.c
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+++ b/kernel/power/suspend.c
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@@ -526,6 +526,8 @@ int suspend_devices_and_enter(suspend_state_t state)
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goto Resume_devices;
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}
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+unsigned int resume_delay = 3000;
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+
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/**
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* suspend_finish - Clean up before finishing the suspend sequence.
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*
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@@ -534,6 +536,15 @@ int suspend_devices_and_enter(suspend_state_t state)
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*/
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static void suspend_finish(void)
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{
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+ if (resume_delay) {
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+ /* Give kernel threads a head start, such that usb-storage
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+ * can detect devices before syslog attempts to write log
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+ * messages from the suspend code.
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+ */
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+ thaw_kernel_threads();
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+ pr_debug("PM: Sleeping for %d milliseconds.\n", resume_delay);
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+ msleep(resume_delay);
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+ }
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suspend_thaw_processes();
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pm_notifier_call_chain(PM_POST_SUSPEND);
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pm_restore_console();
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diff --git a/kernel/sysctl.c b/kernel/sysctl.c
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index 32dea29d05a0..96043d4b4b1f 100644
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--- a/kernel/sysctl.c
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+++ b/kernel/sysctl.c
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@@ -311,7 +311,16 @@ static int min_extfrag_threshold;
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static int max_extfrag_threshold = 1000;
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#endif
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+extern unsigned int resume_delay;
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+
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static struct ctl_table kern_table[] = {
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+ {
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+ .procname = "resume_delay",
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+ .data = &resume_delay,
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+ .maxlen = sizeof(unsigned int),
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+ .mode = 0644,
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+ .proc_handler = proc_dointvec,
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+ },
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{
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.procname = "sched_child_runs_first",
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.data = &sysctl_sched_child_runs_first,
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--
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2.19.1
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