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-rw-r--r--drivers/pci/dwc/pcie-designware-host.c2
-rw-r--r--drivers/pci/pci-driver.c17
-rw-r--r--drivers/pci/pci.c8
-rw-r--r--drivers/pci/quirks.c76
-rw-r--r--drivers/pci/setup-res.c4
5 files changed, 82 insertions, 25 deletions
diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/dwc/pcie-designware-host.c
index 8de2d5c69b1d..dc9303abda42 100644
--- a/drivers/pci/dwc/pcie-designware-host.c
+++ b/drivers/pci/dwc/pcie-designware-host.c
@@ -613,7 +613,7 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
/* setup bus numbers */
val = dw_pcie_readl_dbi(pci, PCI_PRIMARY_BUS);
val &= 0xff000000;
- val |= 0x00010100;
+ val |= 0x00ff0100;
dw_pcie_writel_dbi(pci, PCI_PRIMARY_BUS, val);
/* setup command register */
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 3bed6beda051..6a67cdbd0e6a 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -1224,11 +1224,14 @@ static int pci_pm_runtime_suspend(struct device *dev)
int error;
/*
- * If pci_dev->driver is not set (unbound), the device should
- * always remain in D0 regardless of the runtime PM status
+ * If pci_dev->driver is not set (unbound), we leave the device in D0,
+ * but it may go to D3cold when the bridge above it runtime suspends.
+ * Save its config space in case that happens.
*/
- if (!pci_dev->driver)
+ if (!pci_dev->driver) {
+ pci_save_state(pci_dev);
return 0;
+ }
if (!pm || !pm->runtime_suspend)
return -ENOSYS;
@@ -1276,16 +1279,18 @@ static int pci_pm_runtime_resume(struct device *dev)
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
/*
- * If pci_dev->driver is not set (unbound), the device should
- * always remain in D0 regardless of the runtime PM status
+ * Restoring config space is necessary even if the device is not bound
+ * to a driver because although we left it in D0, it may have gone to
+ * D3cold when the bridge above it runtime suspended.
*/
+ pci_restore_standard_config(pci_dev);
+
if (!pci_dev->driver)
return 0;
if (!pm || !pm->runtime_resume)
return -ENOSYS;
- pci_restore_standard_config(pci_dev);
pci_fixup_device(pci_fixup_resume_early, pci_dev);
pci_enable_wake(pci_dev, PCI_D0, false);
pci_fixup_device(pci_fixup_resume, pci_dev);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ae654e21439d..99ec0ef5ba82 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -800,7 +800,7 @@ static int pci_wakeup(struct pci_dev *pci_dev, void *ign)
* pci_wakeup_bus - Walk given bus and wake up devices on it
* @bus: Top bus of the subtree to walk.
*/
-static void pci_wakeup_bus(struct pci_bus *bus)
+void pci_wakeup_bus(struct pci_bus *bus)
{
if (bus)
pci_walk_bus(bus, pci_wakeup, NULL);
@@ -850,11 +850,11 @@ static int __pci_dev_set_current_state(struct pci_dev *dev, void *data)
}
/**
- * __pci_bus_set_current_state - Walk given bus and set current state of devices
+ * pci_bus_set_current_state - Walk given bus and set current state of devices
* @bus: Top bus of the subtree to walk.
* @state: state to be set
*/
-static void __pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state)
+void pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state)
{
if (bus)
pci_walk_bus(bus, __pci_dev_set_current_state, &state);
@@ -876,7 +876,7 @@ int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state)
ret = pci_platform_power_transition(dev, state);
/* Power off the bridge may power off the whole hierarchy */
if (!ret && state == PCI_D3cold)
- __pci_bus_set_current_state(dev->subordinate, PCI_D3cold);
+ pci_bus_set_current_state(dev->subordinate, PCI_D3cold);
return ret;
}
EXPORT_SYMBOL_GPL(__pci_complete_power_transition);
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index fc734014206f..c3ba14f6444e 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -26,6 +26,7 @@
#include <linux/ktime.h>
#include <linux/mm.h>
#include <linux/platform_data/x86/apple.h>
+#include <linux/pm_runtime.h>
#include <asm/dma.h> /* isa_dma_bridge_buggy */
#include "pci.h"
@@ -3419,22 +3420,29 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE,
static void quirk_chelsio_extend_vpd(struct pci_dev *dev)
{
- pci_set_vpd_size(dev, 8192);
+ int chip = (dev->device & 0xf000) >> 12;
+ int func = (dev->device & 0x0f00) >> 8;
+ int prod = (dev->device & 0x00ff) >> 0;
+
+ /*
+ * If this is a T3-based adapter, there's a 1KB VPD area at offset
+ * 0xc00 which contains the preferred VPD values. If this is a T4 or
+ * later based adapter, the special VPD is at offset 0x400 for the
+ * Physical Functions (the SR-IOV Virtual Functions have no VPD
+ * Capabilities). The PCI VPD Access core routines will normally
+ * compute the size of the VPD by parsing the VPD Data Structure at
+ * offset 0x000. This will result in silent failures when attempting
+ * to accesses these other VPD areas which are beyond those computed
+ * limits.
+ */
+ if (chip == 0x0 && prod >= 0x20)
+ pci_set_vpd_size(dev, 8192);
+ else if (chip >= 0x4 && func < 0x8)
+ pci_set_vpd_size(dev, 2048);
}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x20, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x21, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x22, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x23, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x24, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x25, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x26, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x30, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x31, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x32, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x35, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x36, quirk_chelsio_extend_vpd);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x37, quirk_chelsio_extend_vpd);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
+ quirk_chelsio_extend_vpd);
#ifdef CONFIG_ACPI
/*
@@ -3901,6 +3909,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230,
quirk_dma_func1_alias);
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642,
quirk_dma_func1_alias);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645,
+ quirk_dma_func1_alias);
/* https://bugs.gentoo.org/show_bug.cgi?id=497630 */
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON,
PCI_DEVICE_ID_JMICRON_JMB388_ESD,
@@ -4832,3 +4842,41 @@ static void quirk_fsl_no_msi(struct pci_dev *pdev)
pdev->no_msi = 1;
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi);
+
+/*
+ * GPUs with integrated HDA controller for streaming audio to attached displays
+ * need a device link from the HDA controller (consumer) to the GPU (supplier)
+ * so that the GPU is powered up whenever the HDA controller is accessed.
+ * The GPU and HDA controller are functions 0 and 1 of the same PCI device.
+ * The device link stays in place until shutdown (or removal of the PCI device
+ * if it's hotplugged). Runtime PM is allowed by default on the HDA controller
+ * to prevent it from permanently keeping the GPU awake.
+ */
+static void quirk_gpu_hda(struct pci_dev *hda)
+{
+ struct pci_dev *gpu;
+
+ if (PCI_FUNC(hda->devfn) != 1)
+ return;
+
+ gpu = pci_get_domain_bus_and_slot(pci_domain_nr(hda->bus),
+ hda->bus->number,
+ PCI_DEVFN(PCI_SLOT(hda->devfn), 0));
+ if (!gpu || (gpu->class >> 16) != PCI_BASE_CLASS_DISPLAY) {
+ pci_dev_put(gpu);
+ return;
+ }
+
+ if (!device_link_add(&hda->dev, &gpu->dev,
+ DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME))
+ pci_err(hda, "cannot link HDA to GPU %s\n", pci_name(gpu));
+
+ pm_runtime_allow(&hda->dev);
+ pci_dev_put(gpu);
+}
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID,
+ PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID,
+ PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
+ PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda);
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 369d48d6c6f1..365447240d95 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -401,6 +401,10 @@ void pci_release_resource(struct pci_dev *dev, int resno)
struct resource *res = dev->resource + resno;
pci_info(dev, "BAR %d: releasing %pR\n", resno, res);
+
+ if (!res->parent)
+ return;
+
release_resource(res);
res->end = resource_size(res) - 1;
res->start = 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 07:46:17 +0000