summaryrefslogtreecommitdiffstats
path: root/drivers/pci
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/pci-driver.c3
-rw-r--r--drivers/pci/pci.c18
-rw-r--r--drivers/pci/pci.h9
-rw-r--r--drivers/pci/pcie/dpc.c3
-rw-r--r--drivers/pci/quirks.c13
5 files changed, 29 insertions, 17 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 57ddcc59af30..ae9baf801681 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -572,7 +572,8 @@ static void pci_pm_default_resume_early(struct pci_dev *pci_dev)
static void pci_pm_bridge_power_up_actions(struct pci_dev *pci_dev)
{
- pci_bridge_wait_for_secondary_bus(pci_dev, "resume", PCI_RESET_WAIT);
+ pci_bridge_wait_for_secondary_bus(pci_dev, "resume");
+
/*
* When powering on a bridge from D3cold, the whole hierarchy may be
* powered on into D0uninitialized state, resume them to give them a
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 7a67611dc5f4..0b4f3b08f780 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -64,6 +64,14 @@ struct pci_pme_device {
#define PME_TIMEOUT 1000 /* How long between PME checks */
+/*
+ * Devices may extend the 1 sec period through Request Retry Status
+ * completions (PCIe r6.0 sec 2.3.1). The spec does not provide an upper
+ * limit, but 60 sec ought to be enough for any device to become
+ * responsive.
+ */
+#define PCIE_RESET_READY_POLL_MS 60000 /* msec */
+
static void pci_dev_d3_sleep(struct pci_dev *dev)
{
unsigned int delay_ms = max(dev->d3hot_delay, pci_pm_d3hot_delay);
@@ -4939,7 +4947,6 @@ static int pci_bus_max_d3cold_delay(const struct pci_bus *bus)
* pci_bridge_wait_for_secondary_bus - Wait for secondary bus to be accessible
* @dev: PCI bridge
* @reset_type: reset type in human-readable form
- * @timeout: maximum time to wait for devices on secondary bus (milliseconds)
*
* Handle necessary delays before access to the devices on the secondary
* side of the bridge are permitted after D3cold to D0 transition
@@ -4952,8 +4959,7 @@ static int pci_bus_max_d3cold_delay(const struct pci_bus *bus)
* Return 0 on success or -ENOTTY if the first device on the secondary bus
* failed to become accessible.
*/
-int pci_bridge_wait_for_secondary_bus(struct pci_dev *dev, char *reset_type,
- int timeout)
+int pci_bridge_wait_for_secondary_bus(struct pci_dev *dev, char *reset_type)
{
struct pci_dev *child;
int delay;
@@ -5031,7 +5037,8 @@ int pci_bridge_wait_for_secondary_bus(struct pci_dev *dev, char *reset_type,
}
}
- return pci_dev_wait(child, reset_type, timeout - delay);
+ return pci_dev_wait(child, reset_type,
+ PCIE_RESET_READY_POLL_MS - delay);
}
void pci_reset_secondary_bus(struct pci_dev *dev)
@@ -5068,8 +5075,7 @@ int pci_bridge_secondary_bus_reset(struct pci_dev *dev)
{
pcibios_reset_secondary_bus(dev);
- return pci_bridge_wait_for_secondary_bus(dev, "bus reset",
- PCIE_RESET_READY_POLL_MS);
+ return pci_bridge_wait_for_secondary_bus(dev, "bus reset");
}
EXPORT_SYMBOL_GPL(pci_bridge_secondary_bus_reset);
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index d2c08670a20e..022da58afb33 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -70,12 +70,6 @@ struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev,
* Reset (PCIe r6.0 sec 5.8).
*/
#define PCI_RESET_WAIT 1000 /* msec */
-/*
- * Devices may extend the 1 sec period through Request Retry Status completions
- * (PCIe r6.0 sec 2.3.1). The spec does not provide an upper limit, but 60 sec
- * ought to be enough for any device to become responsive.
- */
-#define PCIE_RESET_READY_POLL_MS 60000 /* msec */
void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
void pci_refresh_power_state(struct pci_dev *dev);
@@ -100,8 +94,7 @@ void pci_msix_init(struct pci_dev *dev);
bool pci_bridge_d3_possible(struct pci_dev *dev);
void pci_bridge_d3_update(struct pci_dev *dev);
void pci_bridge_reconfigure_ltr(struct pci_dev *dev);
-int pci_bridge_wait_for_secondary_bus(struct pci_dev *dev, char *reset_type,
- int timeout);
+int pci_bridge_wait_for_secondary_bus(struct pci_dev *dev, char *reset_type);
static inline void pci_wakeup_event(struct pci_dev *dev)
{
diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c
index a5d7c69b764e..3ceed8e3de41 100644
--- a/drivers/pci/pcie/dpc.c
+++ b/drivers/pci/pcie/dpc.c
@@ -170,8 +170,7 @@ pci_ers_result_t dpc_reset_link(struct pci_dev *pdev)
pci_write_config_word(pdev, cap + PCI_EXP_DPC_STATUS,
PCI_EXP_DPC_STATUS_TRIGGER);
- if (pci_bridge_wait_for_secondary_bus(pdev, "DPC",
- PCIE_RESET_READY_POLL_MS)) {
+ if (pci_bridge_wait_for_secondary_bus(pdev, "DPC")) {
clear_bit(PCI_DPC_RECOVERED, &pdev->priv_flags);
ret = PCI_ERS_RESULT_DISCONNECT;
} else {
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 44cab813bf95..f4e2a88729fd 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1940,6 +1940,19 @@ static void quirk_radeon_pm(struct pci_dev *dev)
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm);
/*
+ * NVIDIA Ampere-based HDA controllers can wedge the whole device if a bus
+ * reset is performed too soon after transition to D0, extend d3hot_delay
+ * to previous effective default for all NVIDIA HDA controllers.
+ */
+static void quirk_nvidia_hda_pm(struct pci_dev *dev)
+{
+ quirk_d3hot_delay(dev, 20);
+}
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
+ PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8,
+ quirk_nvidia_hda_pm);
+
+/*
* Ryzen5/7 XHCI controllers fail upon resume from runtime suspend or s2idle.
* https://bugzilla.kernel.org/show_bug.cgi?id=205587
*