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pci-v4.19-fixes-1

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Merge tag 'pci-v4.19-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Add Tyrel Datwyler as maintainer for PPC64 RPA hotplug (Tyrel
   Datwyler)

 - Add Gustavo Pimentel as DesignWare PCI maintainer (Joao Pinto)

 - Fix a Switchtec Spectre v1 vulnerability (Gustavo A. R. Silva)

 - Revert an unnecessary Intel 300 ACS quirk (Mika Westerberg)

 - Fix pciehp hot-add/powerfault detection that left indicators in wrong
   state (Keith Busch)

 - Fix pci_reset_bus() logic error (Dennis Dalessandro)

 - Revert IB/hfi1 PCI reset change that caused a deadlock (Dennis
   Dalessandro)

 - Allow enabling PASID on Root Complex Integrated Endpoints (Felix
   Kuehling)

* tag 'pci-v4.19-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Fix enabling of PASID on RC integrated endpoints
  IB/hfi1,PCI: Allow bus reset while probing
  PCI: Fix faulty logic in pci_reset_bus()
  PCI: pciehp: Fix hot-add vs powerfault detection order
  switchtec: Fix Spectre v1 vulnerability
  Revert "PCI: Add ACS quirk for Intel 300 series"
  MAINTAINERS: Add Gustavo Pimentel as DesignWare PCI maintainer
  MAINTAINERS: Add entries for PPC64 RPA PCI hotplug drivers
This commit is contained in:
Linus Torvalds 2018-09-12 19:39:56 -10:00
commit 54eda9df17
8 changed files with 41 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
MAINTAINERS
View File

@ -7016,6 +7016,20 @@ F: drivers/crypto/vmx/aes*
F: drivers/crypto/vmx/ghash*
F: drivers/crypto/vmx/ppc-xlate.pl
IBM Power PCI Hotplug Driver for RPA-compliant PPC64 platform
M: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
L: linux-pci@vger.kernel.org
L: linuxppc-dev@lists.ozlabs.org
S: Supported
F: drivers/pci/hotplug/rpaphp*
IBM Power IO DLPAR Driver for RPA-compliant PPC64 platform
M: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
L: linux-pci@vger.kernel.org
L: linuxppc-dev@lists.ozlabs.org
S: Supported
F: drivers/pci/hotplug/rpadlpar*
IBM ServeRAID RAID DRIVER
S: Orphan
F: drivers/scsi/ips.*
@ -11154,7 +11168,7 @@ F: drivers/pci/controller/dwc/pci-exynos.c
PCI DRIVER FOR SYNOPSYS DESIGNWARE
M: Jingoo Han <jingoohan1@gmail.com>
M: Joao Pinto <Joao.Pinto@synopsys.com>
M: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/designware-pcie.txt

11
drivers/infiniband/hw/hfi1/pcie.c
View File

@ -893,14 +893,11 @@ static int trigger_sbr(struct hfi1_devdata *dd)
}
/*
* A secondary bus reset (SBR) issues a hot reset to our device.
* The following routine does a 1s wait after the reset is dropped
* per PCI Trhfa (recovery time). PCIe 3.0 section 6.6.1 -
* Conventional Reset, paragraph 3, line 35 also says that a 1s
* delay after a reset is required. Per spec requirements,
* the link is either working or not after that point.
* This is an end around to do an SBR during probe time. A new API needs
* to be implemented to have cleaner interface but this fixes the
* current brokenness
*/
return pci_reset_bus(dev);
return pci_bridge_secondary_bus_reset(dev->bus->self);
}
/*

18
drivers/pci/hotplug/pciehp_hpc.c
View File

@ -496,7 +496,7 @@ int pciehp_power_on_slot(struct slot *slot)
u16 slot_status;
int retval;
/* Clear sticky power-fault bit from previous power failures */
/* Clear power-fault bit from previous power failures */
pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status);
if (slot_status & PCI_EXP_SLTSTA_PFD)
pcie_capability_write_word(pdev, PCI_EXP_SLTSTA,
@ -646,6 +646,14 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id)
pciehp_handle_button_press(slot);
}
/* Check Power Fault Detected */
if ((events & PCI_EXP_SLTSTA_PFD) && !ctrl->power_fault_detected) {
ctrl->power_fault_detected = 1;
ctrl_err(ctrl, "Slot(%s): Power fault\n", slot_name(slot));
pciehp_set_attention_status(slot, 1);
pciehp_green_led_off(slot);
}
/*
* Disable requests have higher priority than Presence Detect Changed
* or Data Link Layer State Changed events.
@ -657,14 +665,6 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id)
pciehp_handle_presence_or_link_change(slot, events);
up_read(&ctrl->reset_lock);
/* Check Power Fault Detected */
if ((events & PCI_EXP_SLTSTA_PFD) && !ctrl->power_fault_detected) {
ctrl->power_fault_detected = 1;
ctrl_err(ctrl, "Slot(%s): Power fault\n", slot_name(slot));
pciehp_set_attention_status(slot, 1);
pciehp_green_led_off(slot);
}
pci_config_pm_runtime_put(pdev);
wake_up(&ctrl->requester);
return IRQ_HANDLED;

3
drivers/pci/pci.c
View File

@ -4547,6 +4547,7 @@ int pci_bridge_secondary_bus_reset(struct pci_dev *dev)
return pci_dev_wait(dev, "bus reset", PCIE_RESET_READY_POLL_MS);
}
EXPORT_SYMBOL_GPL(pci_bridge_secondary_bus_reset);
static int pci_parent_bus_reset(struct pci_dev *dev, int probe)
{
@ -5200,7 +5201,7 @@ static int __pci_reset_bus(struct pci_bus *bus)
*/
int pci_reset_bus(struct pci_dev *pdev)
{
return pci_probe_reset_slot(pdev->slot) ?
return (!pci_probe_reset_slot(pdev->slot)) ?
__pci_reset_slot(pdev->slot) : __pci_reset_bus(pdev->bus);
}
EXPORT_SYMBOL_GPL(pci_reset_bus);

5
drivers/pci/probe.c
View File

@ -2074,6 +2074,7 @@ static void pci_configure_eetlp_prefix(struct pci_dev *dev)
{
#ifdef CONFIG_PCI_PASID
struct pci_dev *bridge;
int pcie_type;
u32 cap;
if (!pci_is_pcie(dev))
@ -2083,7 +2084,9 @@ static void pci_configure_eetlp_prefix(struct pci_dev *dev)
if (!(cap & PCI_EXP_DEVCAP2_EE_PREFIX))
return;
if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT)
pcie_type = pci_pcie_type(dev);
if (pcie_type == PCI_EXP_TYPE_ROOT_PORT ||
pcie_type == PCI_EXP_TYPE_RC_END)
dev->eetlp_prefix_path = 1;
else {
bridge = pci_upstream_bridge(dev);

6
drivers/pci/quirks.c
View File

@ -4355,11 +4355,6 @@ static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
*
* 0x9d10-0x9d1b PCI Express Root port #{1-12}
*
* The 300 series chipset suffers from the same bug so include those root
* ports here as well.
*
* 0xa32c-0xa343 PCI Express Root port #{0-24}
*
* [1] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
* [2] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
* [3] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
@ -4377,7 +4372,6 @@ static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
case 0xa32c ... 0xa343: /* 300 series */
return true;
}

4
drivers/pci/switch/switchtec.c
View File

@ -14,6 +14,8 @@
#include <linux/poll.h>
#include <linux/wait.h>
#include <linux/nospec.h>
MODULE_DESCRIPTION("Microsemi Switchtec(tm) PCIe Management Driver");
MODULE_VERSION("0.1");
MODULE_LICENSE("GPL");
@ -909,6 +911,8 @@ static int ioctl_port_to_pff(struct switchtec_dev *stdev,
default:
if (p.port > ARRAY_SIZE(pcfg->dsp_pff_inst_id))
return -EINVAL;
p.port = array_index_nospec(p.port,
ARRAY_SIZE(pcfg->dsp_pff_inst_id) + 1);
p.pff = ioread32(&pcfg->dsp_pff_inst_id[p.port - 1]);
break;
}

3
include/linux/pci.h
View File

@ -1235,6 +1235,9 @@ void pci_bus_remove_resources(struct pci_bus *bus);
int devm_request_pci_bus_resources(struct device *dev,
struct list_head *resources);
/* Temporary until new and working PCI SBR API in place */
int pci_bridge_secondary_bus_reset(struct pci_dev *dev);
#define pci_bus_for_each_resource(bus, res, i) \
for (i = 0; \
(res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \