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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-11 20:34:00 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-10-11 20:34:00 -0400 |
commit | fd9879b9bb3258ebc27a4cc6d2d29f528f71901f (patch) | |
tree | 48b68994f5e8083aafe116533e8143cb2bf30c85 /arch/powerpc/kernel/eeh_sysfs.c | |
parent | 81ae31d78239318610d7c2acb3e2610d622a5aa4 (diff) | |
parent | d53ba6b3bba33432cc37b7101a86f8f3392c46e7 (diff) | |
download | linux-fd9879b9bb3258ebc27a4cc6d2d29f528f71901f.tar.gz linux-fd9879b9bb3258ebc27a4cc6d2d29f528f71901f.tar.bz2 linux-fd9879b9bb3258ebc27a4cc6d2d29f528f71901f.zip |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc updates from Michael Ellerman:
"Here's a first pull request for powerpc updates for 3.18.
The bulk of the additions are for the "cxl" driver, for IBM's Coherent
Accelerator Processor Interface (CAPI). Most of it's in drivers/misc,
which Greg & Arnd maintain, Greg said he was happy for us to take it
through our tree.
There's the usual minor cleanups and fixes, including a bit of noise
in drivers from some of those. A bunch of updates to our EEH code,
which has been getting more testing. Several nice speedups from
Anton, including 20% in clear_page().
And a bunch of updates for freescale from Scott"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits)
cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking
cxl: Add documentation for userspace APIs
cxl: Add driver to Kbuild and Makefiles
cxl: Add userspace header file
cxl: Driver code for powernv PCIe based cards for userspace access
cxl: Add base builtin support
powerpc/mm: Add hooks for cxl
powerpc/opal: Add PHB to cxl mode call
powerpc/mm: Add new hash_page_mm()
powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
cxl: Add new header for call backs and structs
powerpc/powernv: Split out set MSI IRQ chip code
powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
powerpc/msi: Improve IRQ bitmap allocator
powerpc/cell: Make spu_flush_all_slbs() generic
powerpc/cell: Move data segment faulting code out of cell platform
powerpc/cell: Move spu_handle_mm_fault() out of cell platform
powerpc/pseries: Use new defines when calling H_SET_MODE
powerpc: Update contact info in Documentation files
powerpc/perf/hv-24x7: Simplify catalog_read()
...
Diffstat (limited to 'arch/powerpc/kernel/eeh_sysfs.c')
-rw-r--r-- | arch/powerpc/kernel/eeh_sysfs.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/eeh_sysfs.c b/arch/powerpc/kernel/eeh_sysfs.c index e2595ba4b720..f19b1e5cb060 100644 --- a/arch/powerpc/kernel/eeh_sysfs.c +++ b/arch/powerpc/kernel/eeh_sysfs.c @@ -54,6 +54,43 @@ EEH_SHOW_ATTR(eeh_mode, mode, "0x%x"); EEH_SHOW_ATTR(eeh_config_addr, config_addr, "0x%x"); EEH_SHOW_ATTR(eeh_pe_config_addr, pe_config_addr, "0x%x"); +static ssize_t eeh_pe_state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); + int state; + + if (!edev || !edev->pe) + return -ENODEV; + + state = eeh_ops->get_state(edev->pe, NULL); + return sprintf(buf, "%0x08x %0x08x\n", + state, edev->pe->state); +} + +static ssize_t eeh_pe_state_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); + + if (!edev || !edev->pe) + return -ENODEV; + + /* Nothing to do if it's not frozen */ + if (!(edev->pe->state & EEH_PE_ISOLATED)) + return count; + + if (eeh_unfreeze_pe(edev->pe, true)) + return -EIO; + + return count; +} + +static DEVICE_ATTR_RW(eeh_pe_state); + void eeh_sysfs_add_device(struct pci_dev *pdev) { struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); @@ -68,9 +105,10 @@ void eeh_sysfs_add_device(struct pci_dev *pdev) rc += device_create_file(&pdev->dev, &dev_attr_eeh_mode); rc += device_create_file(&pdev->dev, &dev_attr_eeh_config_addr); rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_config_addr); + rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_state); if (rc) - printk(KERN_WARNING "EEH: Unable to create sysfs entries\n"); + pr_warn("EEH: Unable to create sysfs entries\n"); else if (edev) edev->mode |= EEH_DEV_SYSFS; } @@ -92,6 +130,7 @@ void eeh_sysfs_remove_device(struct pci_dev *pdev) device_remove_file(&pdev->dev, &dev_attr_eeh_mode); device_remove_file(&pdev->dev, &dev_attr_eeh_config_addr); device_remove_file(&pdev->dev, &dev_attr_eeh_pe_config_addr); + device_remove_file(&pdev->dev, &dev_attr_eeh_pe_state); if (edev) edev->mode &= ~EEH_DEV_SYSFS; |