diff options
author | Bjorn Helgaas <bhelgaas@google.com> | 2012-11-09 16:59:40 (GMT) |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2012-11-09 16:59:40 (GMT) |
commit | 13a84687092f47a6d67b1b17940eb3127ae888b3 (patch) | |
tree | 6d6766e6f7721729f60dd4f72fd93c19f97f2248 /drivers/pci | |
parent | 8f0d8163b50e01f398b14bcd4dc039ac5ab18d64 (diff) | |
parent | 6e965e0d0e1d102c261326b06338d3385ea55f97 (diff) | |
download | linux-fsl-qoriq-13a84687092f47a6d67b1b17940eb3127ae888b3.tar.xz |
Merge branch 'pci/misc' into next
* pci/misc:
PCI/PM: Add comments for PME poll support for PCIe
PCI: Add PLX PCI 9050 workaround for some Meilhaus DAQ cards
PCI: Add workaround for PLX PCI 9050 BAR alignment erratum
PCI: Convert dev_printk(KERN_<LEVEL> to dev_<level>(
x86/PCI: Ignore _SEG on HP xw9300
PCI: Don't touch card regs after runtime suspend D3
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/irq.c | 10 | ||||
-rw-r--r-- | drivers/pci/pci-driver.c | 6 | ||||
-rw-r--r-- | drivers/pci/pci-stub.c | 2 | ||||
-rw-r--r-- | drivers/pci/pci.c | 28 | ||||
-rw-r--r-- | drivers/pci/pcie/aspm.c | 7 | ||||
-rw-r--r-- | drivers/pci/quirks.c | 39 |
6 files changed, 69 insertions, 23 deletions
diff --git a/drivers/pci/irq.c b/drivers/pci/irq.c index e5f69a4..b008cf8 100644 --- a/drivers/pci/irq.c +++ b/drivers/pci/irq.c @@ -14,11 +14,11 @@ static void pci_note_irq_problem(struct pci_dev *pdev, const char *reason) { struct pci_dev *parent = to_pci_dev(pdev->dev.parent); - dev_printk(KERN_ERR, &pdev->dev, - "Potentially misrouted IRQ (Bridge %s %04x:%04x)\n", - dev_name(&parent->dev), parent->vendor, parent->device); - dev_printk(KERN_ERR, &pdev->dev, "%s\n", reason); - dev_printk(KERN_ERR, &pdev->dev, "Please report to linux-kernel@vger.kernel.org\n"); + dev_err(&pdev->dev, + "Potentially misrouted IRQ (Bridge %s %04x:%04x)\n", + dev_name(&parent->dev), parent->vendor, parent->device); + dev_err(&pdev->dev, "%s\n", reason); + dev_err(&pdev->dev, "Please report to linux-kernel@vger.kernel.org\n"); WARN_ON(1); } diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 94c6e2a..11d9c8a 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -1023,10 +1023,10 @@ static int pci_pm_runtime_suspend(struct device *dev) return 0; } - if (!pci_dev->state_saved) + if (!pci_dev->state_saved) { pci_save_state(pci_dev); - - pci_finish_runtime_suspend(pci_dev); + pci_finish_runtime_suspend(pci_dev); + } return 0; } diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c index 775e933..6e47c51 100644 --- a/drivers/pci/pci-stub.c +++ b/drivers/pci/pci-stub.c @@ -28,7 +28,7 @@ MODULE_PARM_DESC(ids, "Initial PCI IDs to add to the stub driver, format is " static int pci_stub_probe(struct pci_dev *dev, const struct pci_device_id *id) { - dev_printk(KERN_INFO, &dev->dev, "claimed by stub\n"); + dev_info(&dev->dev, "claimed by stub\n"); return 0; } diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 5485883..485cfa9 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1578,15 +1578,25 @@ void pci_pme_active(struct pci_dev *dev, bool enable) pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, pmcsr); - /* PCI (as opposed to PCIe) PME requires that the device have - its PME# line hooked up correctly. Not all hardware vendors - do this, so the PME never gets delivered and the device - remains asleep. The easiest way around this is to - periodically walk the list of suspended devices and check - whether any have their PME flag set. The assumption is that - we'll wake up often enough anyway that this won't be a huge - hit, and the power savings from the devices will still be a - win. */ + /* + * PCI (as opposed to PCIe) PME requires that the device have + * its PME# line hooked up correctly. Not all hardware vendors + * do this, so the PME never gets delivered and the device + * remains asleep. The easiest way around this is to + * periodically walk the list of suspended devices and check + * whether any have their PME flag set. The assumption is that + * we'll wake up often enough anyway that this won't be a huge + * hit, and the power savings from the devices will still be a + * win. + * + * Although PCIe uses in-band PME message instead of PME# line + * to report PME, PME does not work for some PCIe devices in + * reality. For example, there are devices that set their PME + * status bits, but don't really bother to send a PME message; + * there are PCI Express Root Ports that don't bother to + * trigger interrupts when they receive PME messages from the + * devices below. So PME poll is used for PCIe devices too. + */ if (dev->pme_poll) { struct pci_pme_device *pme_dev; diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 213753b..3da9ecc 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -242,8 +242,7 @@ static void pcie_aspm_configure_common_clock(struct pcie_link_state *link) return; /* Training failed. Restore common clock configurations */ - dev_printk(KERN_ERR, &parent->dev, - "ASPM: Could not configure common clock\n"); + dev_err(&parent->dev, "ASPM: Could not configure common clock\n"); list_for_each_entry(child, &linkbus->devices, bus_list) pcie_capability_write_word(child, PCI_EXP_LNKCTL, child_reg[PCI_FUNC(child->devfn)]); @@ -507,9 +506,7 @@ static int pcie_aspm_sanity_check(struct pci_dev *pdev) */ pcie_capability_read_dword(child, PCI_EXP_DEVCAP, ®32); if (!(reg32 & PCI_EXP_DEVCAP_RBER) && !aspm_force) { - dev_printk(KERN_INFO, &child->dev, "disabling ASPM" - " on pre-1.1 PCIe device. You can enable it" - " with 'pcie_aspm=force'\n"); + dev_info(&child->dev, "disabling ASPM on pre-1.1 PCIe device. You can enable it with 'pcie_aspm=force'\n"); return -EINVAL; } } diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 7a451ff..0c59f7a 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -1790,6 +1790,45 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE, quirk_tc86c001_ide); +/* + * PLX PCI 9050 PCI Target bridge controller has an errata that prevents the + * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o) + * being read correctly if bit 7 of the base address is set. + * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128). + * Re-allocate the regions to a 256-byte boundary if necessary. + */ +static void __devinit quirk_plx_pci9050(struct pci_dev *dev) +{ + unsigned int bar; + + /* Fixed in revision 2 (PCI 9052). */ + if (dev->revision >= 2) + return; + for (bar = 0; bar <= 1; bar++) + if (pci_resource_len(dev, bar) == 0x80 && + (pci_resource_start(dev, bar) & 0x80)) { + struct resource *r = &dev->resource[bar]; + dev_info(&dev->dev, + "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n", + bar); + r->start = 0; + r->end = 0xff; + } +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, + quirk_plx_pci9050); +/* + * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others) + * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b, + * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c, + * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b. + * + * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq" + * driver. + */ +DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050); +DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050); + static void __devinit quirk_netmos(struct pci_dev *dev) { unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4; |