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BranchCommit messageAuthorAge
archive/unc-master-3.0P-FP: fix BUG_ON releated to priority inheritanceBjoern Brandenburg13 years
archived-2013.1uncachedev: mmap memory that is not cached by CPUsGlenn Elliott12 years
archived-private-masterMerge branch 'wip-2.6.34' into old-private-masterAndrea Bastoni15 years
archived-semi-partMerge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...Andrea Bastoni15 years
demoFurther refinementsJonathan Herman14 years
ecrts-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
ecrts14-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
gpusync-rtss12Final GPUSync implementation.Glenn Elliott12 years
gpusync/stagingRename IKGLP R2DGLP.Glenn Elliott12 years
linux-tipMerge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...Linus Torvalds15 years
litmus2008-patch-seriesadd i386 feather-trace implementationBjoern B. Brandenburg16 years
masterPSN-EDF: use inferred_sporadic_job_release_atBjoern Brandenburg9 years
pgmmake it compileGlenn Elliott12 years
prop/litmus-signalsInfrastructure for Litmus signals.Glenn Elliott13 years
prop/robust-tie-breakFixed bug in edf_higher_prio().Glenn Elliott13 years
stagingFix tracepoint compilation errorFelipe Cerqueira13 years
test9/23/2016Namhoon Kim9 years
tracing-develTest kernel tracing events capabilitiesAndrea Bastoni16 years
v2.6.34-with-arm-patchessmsc911x: Add spinlocks around registers accessCatalin Marinas15 years
v2015.1Add ARM syscall def for get_current_budgetBjoern Brandenburg10 years
wip-2011.2-bbbLitmus core: simplify np-section protocolBjoern B. Brandenburg14 years
wip-2011.2-bbb-traceRefactor sched_trace_log_message() -> debug_trace_log_message()Andrea Bastoni14 years
wip-2012.3-gpuSOBLIV draining support for C-EDF.Glenn Elliott12 years
wip-2012.3-gpu-preportpick up last C-RM fileGlenn Elliott12 years
wip-2012.3-gpu-rtss13Fix critical bug in GPU tracker.Glenn Elliott12 years
wip-2012.3-gpu-sobliv-budget-w-ksharkProper sobliv draining and many bug fixes.Glenn Elliott12 years
wip-aedzl-finalMake it easier to compile AEDZL interfaces in liblitmus.Glenn Elliott15 years
wip-aedzl-revisedAdd sched_trace data for Apative EDZLGlenn Elliott15 years
wip-arbit-deadlineFix compilation bug.Glenn Elliott13 years
wip-aux-tasksDescription of refined aux task inheritance.Glenn Elliott13 years
wip-bbbGSN-EDF & Core: improve debug TRACE'ing for NP sectionsBjoern B. Brandenburg14 years
wip-bbb-prio-donuse correct timestampBjoern B. Brandenburg14 years
wip-better-breakImplement hash-based EDF tie-breaking.Glenn Elliott13 years
wip-binary-heapMake C-EDF work with simplified binheap_deleteGlenn Elliott13 years
wip-budgetAdded support for choices in budget policy enforcement.Glenn Elliott15 years
wip-colorSummarize schedulability with final recordJonathan Herman13 years
wip-color-jlhsched_color: Fixed two bugs causing crashing on experiment restart and a rare...Jonathan Herman13 years
wip-d10-hz1000Enable HZ=1000 on District 10Bjoern B. Brandenburg15 years
wip-default-clusteringFeature: Make default C-EDF clustering compile-time configurable.Glenn Elliott15 years
wip-dissipation-jericksoUpdate from 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-dissipation2-jericksoUpdate 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-ecrts14-pgmMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
wip-edf-hsblast tested versionJonathan Herman14 years
wip-edf-osLookup table EDF-osJeremy Erickson12 years
wip-edf-tie-breakMerge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...Glenn Elliott13 years
wip-edzl-critiqueUse hr_timer's active checks instead of having own flag.Glenn Elliott15 years
wip-edzl-finalImplementation of the EDZL scheduler.Glenn Elliott15 years
wip-edzl-revisedClean up comments.Glenn Elliott15 years
wip-eventsAdded support for tracing arbitrary actions.Jonathan Herman15 years
wip-extra-debugDBG: add additional tracingBjoern B. Brandenburg15 years
wip-fix-switch-jericksoAttempt to fix race condition with plugin switchingJeremy Erickson15 years
wip-fix3sched: show length of runqueue clock deactivation in /proc/sched_debugBjoern B. Brandenburg15 years
wip-fmlp-dequeueImprove FMLP queue management.Glenn Elliott14 years
wip-ft-irq-flagFeather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-gpu-cleanupEnable sched_trace log injection from userspaceGlenn Elliott13 years
wip-gpu-interruptsRemove option for threading of all softirqs.Glenn Elliott14 years
wip-gpu-rtas12Generalized GPU cost predictors + EWMA. (untested)Glenn Elliott13 years
wip-gpu-rtss12Final GPUSync implementation.Glenn Elliott13 years
wip-gpu-rtss12-srpexperimental changes to support GPUs under SRPGlenn Elliott13 years
wip-gpusync-mergeCleanup priority tracking for budget enforcement.Glenn Elliott11 years
wip-ikglpMove RSM and IKGLP imp. to own .c filesGlenn Elliott13 years
wip-k-fmlpMerge branch 'mpi-master' into wip-k-fmlpGlenn Elliott14 years
wip-kernel-coloringAdded recolor syscallNamhoon Kim7 years
wip-kernthreadsKludge work-queue processing into klitirqd.Glenn Elliott15 years
wip-klmirqd-to-auxAllow klmirqd threads to be given names.Glenn Elliott13 years
wip-ksharkMerge branch 'mpi-staging' into wip-ksharkJonathan Herman13 years
wip-litmus-3.2Merge commit 'v3.2' into litmus-stagingAndrea Bastoni13 years
wip-litmus2011.2Cleanup: Coding conformance for affinity stuff.Glenn Elliott14 years
wip-litmus3.0-2011.2Feather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-master-2.6.33-rtAvoid deadlock when switching task policy to BACKGROUND (ugly)Andrea Bastoni15 years
wip-mcRemoved ARM-specific hacks which disabled less common mixed-criticality featu...Jonathan Herman12 years
wip-mc-bipasaMC-EDF addedbipasa chattopadhyay13 years
wip-mc-jericksoSplit C/D queuesJeremy Erickson15 years
wip-mc2-cache-slackManually patched mc^2 related codeMing Yang10 years
wip-mcrit-maccosmeticMac Mollison15 years
wip-merge-3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-merge-v3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-migration-affinityNULL affinity dereference in C-EDF.Glenn Elliott14 years
wip-mmap-uncacheshare branch with othersGlenn Elliott13 years
wip-modechangeRTSS 2017 submissionNamhoon Kim8 years
wip-nested-lockingAppears to be working.Bryan Ward12 years
wip-omlp-gedfFirst implementation of G-OMLP.Glenn Elliott15 years
wip-paiSome cleanup of PAIGlenn Elliott14 years
wip-percore-lib9/21/2016Namhoon Kim9 years
wip-performanceCONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.Glenn Elliott14 years
wip-pgmAdd PGM support to C-FLGlenn Elliott12 years
wip-pgm-splitFirst draft of C-FL-splitNamhoon Kim12 years
wip-pm-ovdAdd preemption-and-migration overhead tracing supportAndrea Bastoni15 years
wip-prio-inhP-EDF updated to use the generic pi framework.Glenn Elliott15 years
wip-prioq-dglBUG FIX: Support DGLs with PRIOQ_MUTEXGlenn Elliott13 years
wip-refactored-gedfGeneralizd architecture for GEDF-style scheduelrs to reduce code redundancy.Glenn Elliott15 years
wip-release-master-fixbugfix: release master CPU must signal task was pickedBjoern B. Brandenburg14 years
wip-robust-tie-breakEDF priority tie-breaks.Glenn Elliott13 years
wip-rt-ksharkMove task time accounting into the complete_job method.Jonathan Herman13 years
wip-rtas12-pgmScheduling of PGM jobs.Glenn Elliott13 years
wip-semi-partFix compile error with newer GCCJeremy Erickson12 years
wip-semi-part-edfos-jericksoUse initial CPU set by clientJeremy Erickson12 years
wip-shared-libTODO: Fix condition checks in replicate_page_move_mapping()Namhoon Kim9 years
wip-shared-lib2RTAS 2017 Submission ver.Namhoon Kim9 years
wip-shared-memInitial commit for shared libraryNamhoon Kim9 years
wip-splitting-jericksoFix release behaviorJeremy Erickson13 years
wip-splitting-omlp-jericksoBjoern's Dissertation Code with Priority DonationJeremy Erickson13 years
wip-stage-binheapAn efficient binary heap implementation.Glenn Elliott13 years
wip-sun-portDynamic memory allocation and clean exit for FeatherTraceChristopher Kenna15 years
wip-timer-tracebugfix: C-EDF, clear scheduled field of the correct CPU upon task_exitAndrea Bastoni15 years
wip-tracepointsAdd kernel-style events for sched_trace_XXX() functionsAndrea Bastoni14 years
 
TagDownloadAuthorAge
2015.1commit 8e51b37822...Bjoern Brandenburg10 years
2013.1commit bcaacec1ca...Glenn Elliott12 years
2012.3commit c158b5fbe4...Jonathan Herman13 years
2012.2commit b53c479a0f...Glenn Elliott13 years
2012.1commit 83b11ea1c6...Bjoern B. Brandenburg14 years
rtas12-mc-beta-expcommit 8e236ee20f...Christopher Kenna14 years
2011.1commit d11808b5c6...Christopher Kenna15 years
v2.6.37-rc4commit e8a7e48bb2...Linus Torvalds15 years
v2.6.37-rc3commit 3561d43fd2...Linus Torvalds15 years
v2.6.37-rc2commit e53beacd23...Linus Torvalds15 years
v2.6.37-rc1commit c8ddb2713c...Linus Torvalds15 years
v2.6.36commit f6f94e2ab1...Linus Torvalds15 years
2010.2commit 5c5456402d...Bjoern B. Brandenburg15 years
v2.6.36-rc8commit cd07202cc8...Linus Torvalds15 years
v2.6.36-rc7commit cb655d0f3d...Linus Torvalds15 years
v2.6.36-rc6commit 899611ee7d...Linus Torvalds15 years
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2010.1commit 7c1ff4c544...Andrea Bastoni15 years
v2.6.34commit e40152ee1e...Linus Torvalds15 years
v2.6.33.4commit 4640b4e7d9...Greg Kroah-Hartman15 years
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v2.6.15-rc3commit 624f54be20...Linus Torvalds20 years
v2.6.15-rc2commit 3bedff1d73...Linus Torvalds20 years
v2.6.15-rc1commit cd52d1ee9a...Linus Torvalds20 years
v2.6.14commit 741b2252a5...Linus Torvalds20 years
v2.6.14-rc5commit 93918e9afc...Linus Torvalds20 years
v2.6.14-rc4commit 907a426179...Linus Torvalds20 years
v2.6.14-rc3commit 1c9426e8a5...Linus Torvalds20 years
v2.6.14-rc2commit 676d55ae30...Linus Torvalds20 years
v2.6.14-rc1commit 2f4ba45a75...Linus Torvalds20 years
v2.6.13commit 02b3e4e2d7...Linus Torvalds20 years
v2.6.13-rc7commit 0572e3da3f...Linus Torvalds20 years
v2.6.13-rc6commit 6fc32179de...Linus Torvalds20 years
v2.6.13-rc5commit 9a351e30d7...Linus Torvalds20 years
v2.6.13-rc4commit 6395352334...Linus Torvalds20 years
v2.6.11tree c39ae07f39...
v2.6.11-treetree c39ae07f39...
v2.6.12commit 9ee1c939d1...
v2.6.12-rc2commit 1da177e4c3...
v2.6.12-rc3commit a2755a80f4...
v2.6.12-rc4commit 88d7bd8cb9...
v2.6.12-rc5commit 2a24ab628a...
v2.6.12-rc6commit 7cef5677ef...
v2.6.13-rc1commit 4c91aedb75...
v2.6.13-rc2commit a18bcb7450...
v2.6.13-rc3commit c32511e271...
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-09 13:14:22 -0400
pan>driver_override) return -ENOMEM; cp = strchr(driver_override, '\n'); if (cp) *cp = '\0'; device_lock(dev); old = pdev->driver_override; if (strlen(driver_override)) { pdev->driver_override = driver_override; } else { kfree(driver_override); pdev->driver_override = NULL; } device_unlock(dev); kfree(old); return count; } static ssize_t driver_override_show(struct device *dev, struct device_attribute *attr, char *buf) { struct pci_dev *pdev = to_pci_dev(dev); ssize_t len; device_lock(dev); len = snprintf(buf, PAGE_SIZE, "%s\n", pdev->driver_override); device_unlock(dev); return len; } static DEVICE_ATTR_RW(driver_override); static struct attribute *pci_dev_attrs[] = { &dev_attr_resource.attr, &dev_attr_vendor.attr, &dev_attr_device.attr, &dev_attr_subsystem_vendor.attr, &dev_attr_subsystem_device.attr, &dev_attr_revision.attr, &dev_attr_class.attr, &dev_attr_irq.attr, &dev_attr_local_cpus.attr, &dev_attr_local_cpulist.attr, &dev_attr_modalias.attr, #ifdef CONFIG_NUMA &dev_attr_numa_node.attr, #endif &dev_attr_dma_mask_bits.attr, &dev_attr_consistent_dma_mask_bits.attr, &dev_attr_enable.attr, &dev_attr_broken_parity_status.attr, &dev_attr_msi_bus.attr, #if defined(CONFIG_PM) && defined(CONFIG_ACPI) &dev_attr_d3cold_allowed.attr, #endif #ifdef CONFIG_OF &dev_attr_devspec.attr, #endif &dev_attr_driver_override.attr, &dev_attr_ari_enabled.attr, NULL, }; static struct attribute *pci_bridge_attrs[] = { &dev_attr_subordinate_bus_number.attr, &dev_attr_secondary_bus_number.attr, NULL, }; static struct attribute *pcie_dev_attrs[] = { &dev_attr_current_link_speed.attr, &dev_attr_current_link_width.attr, &dev_attr_max_link_width.attr, &dev_attr_max_link_speed.attr, NULL, }; static struct attribute *pcibus_attrs[] = { &dev_attr_bus_rescan.attr, &dev_attr_cpuaffinity.attr, &dev_attr_cpulistaffinity.attr, NULL, }; static const struct attribute_group pcibus_group = { .attrs = pcibus_attrs, }; const struct attribute_group *pcibus_groups[] = { &pcibus_group, NULL, }; static ssize_t boot_vga_show(struct device *dev, struct device_attribute *attr, char *buf) { struct pci_dev *pdev = to_pci_dev(dev); struct pci_dev *vga_dev = vga_default_device(); if (vga_dev) return sprintf(buf, "%u\n", (pdev == vga_dev)); return sprintf(buf, "%u\n", !!(pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW)); } static DEVICE_ATTR_RO(boot_vga); static ssize_t pci_read_config(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj)); unsigned int size = 64; loff_t init_off = off; u8 *data = (u8 *) buf; /* Several chips lock up trying to read undefined config space */ if (file_ns_capable(filp, &init_user_ns, CAP_SYS_ADMIN)) size = dev->cfg_size; else if (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) size = 128; if (off > size) return 0; if (off + count > size) { size -= off; count = size; } else { size = count; } pci_config_pm_runtime_get(dev); if ((off & 1) && size) { u8 val; pci_user_read_config_byte(dev, off, &val); data[off - init_off] = val; off++; size--; } if ((off & 3) && size > 2) { u16 val; pci_user_read_config_word(dev, off, &val); data[off - init_off] = val & 0xff; data[off - init_off + 1] = (val >> 8) & 0xff; off += 2; size -= 2; } while (size > 3) { u32 val; pci_user_read_config_dword(dev, off, &val); data[off - init_off] = val & 0xff; data[off - init_off + 1] = (val >> 8) & 0xff; data[off - init_off + 2] = (val >> 16) & 0xff; data[off - init_off + 3] = (val >> 24) & 0xff; off += 4; size -= 4; } if (size >= 2) { u16 val; pci_user_read_config_word(dev, off, &val); data[off - init_off] = val & 0xff; data[off - init_off + 1] = (val >> 8) & 0xff; off += 2; size -= 2; } if (size > 0) { u8 val; pci_user_read_config_byte(dev, off, &val); data[off - init_off] = val; off++; --size; } pci_config_pm_runtime_put(dev); return count; } static ssize_t pci_write_config(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { struct pci_dev *dev = to_pci_dev(kobj_to_dev(kobj)); unsigned int size = count; loff_t init_off = off; u8 *data = (u8 *) buf; if (off > dev->cfg_size) return 0; if (off + count > dev->cfg_size) { size = dev->cfg_size - off; count = size; } pci_config_pm_runtime_get(dev); if ((off & 1) && size) { pci_user_write_config_byte(dev, off, data[off - init_off]); off++; size--; } if ((off & 3) && size > 2) { u16 val = data[off - init_off]; val |= (u16) data[off - init_off + 1] << 8; pci_user_write_config_word(dev, off, val); off += 2; size -= 2; } while (size > 3) { u32 val = data[off - init_off]; val |= (u32) data[off - init_off + 1] << 8; val |= (u32) data[off - init_off + 2] << 16; val |= (u32) data[off - init_off + 3] << 24; pci_user_write_config_dword(dev, off, val); off += 4; size -= 4; } if (size >= 2) { u16 val = data[off - init_off]; val |= (u16) data[off - init_off + 1] << 8; pci_user_write_config_word(dev, off, val); off += 2; size -= 2; } if (size) { pci_user_write_config_byte(dev, off, data[off - init_off]); off++; --size; } pci_config_pm_runtime_put(dev); return count; } #ifdef HAVE_PCI_LEGACY /** * pci_read_legacy_io - read byte(s) from legacy I/O port space * @filp: open sysfs file * @kobj: kobject corresponding to file to read from * @bin_attr: struct bin_attribute for this file * @buf: buffer to store results * @off: offset into legacy I/O port space * @count: number of bytes to read * * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific * callback routine (pci_legacy_read). */ static ssize_t pci_read_legacy_io(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); /* Only support 1, 2 or 4 byte accesses */ if (count != 1 && count != 2 && count != 4) return -EINVAL; return pci_legacy_read(bus, off, (u32 *)buf, count); } /** * pci_write_legacy_io - write byte(s) to legacy I/O port space * @filp: open sysfs file * @kobj: kobject corresponding to file to read from * @bin_attr: struct bin_attribute for this file * @buf: buffer containing value to be written * @off: offset into legacy I/O port space * @count: number of bytes to write * * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific * callback routine (pci_legacy_write). */ static ssize_t pci_write_legacy_io(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); /* Only support 1, 2 or 4 byte accesses */ if (count != 1 && count != 2 && count != 4) return -EINVAL; return pci_legacy_write(bus, off, *(u32 *)buf, count); } /** * pci_mmap_legacy_mem - map legacy PCI memory into user memory space * @filp: open sysfs file * @kobj: kobject corresponding to device to be mapped * @attr: struct bin_attribute for this file * @vma: struct vm_area_struct passed to mmap * * Uses an arch specific callback, pci_mmap_legacy_mem_page_range, to mmap * legacy memory space (first meg of bus space) into application virtual * memory space. */ static int pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, struct vm_area_struct *vma) { struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); return pci_mmap_legacy_page_range(bus, vma, pci_mmap_mem); } /** * pci_mmap_legacy_io - map legacy PCI IO into user memory space * @filp: open sysfs file * @kobj: kobject corresponding to device to be mapped * @attr: struct bin_attribute for this file * @vma: struct vm_area_struct passed to mmap * * Uses an arch specific callback, pci_mmap_legacy_io_page_range, to mmap * legacy IO space (first meg of bus space) into application virtual * memory space. Returns -ENOSYS if the operation isn't supported */ static int pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, struct vm_area_struct *vma) { struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); return pci_mmap_legacy_page_range(bus, vma, pci_mmap_io); } /** * pci_adjust_legacy_attr - adjustment of legacy file attributes * @b: bus to create files under * @mmap_type: I/O port or memory * * Stub implementation. Can be overridden by arch if necessary. */ void __weak pci_adjust_legacy_attr(struct pci_bus *b, enum pci_mmap_state mmap_type) { } /** * pci_create_legacy_files - create legacy I/O port and memory files * @b: bus to create files under * * Some platforms allow access to legacy I/O port and ISA memory space on * a per-bus basis. This routine creates the files and ties them into * their associated read, write and mmap files from pci-sysfs.c * * On error unwind, but don't propagate the error to the caller * as it is ok to set up the PCI bus without these files. */ void pci_create_legacy_files(struct pci_bus *b) { int error; b->legacy_io = kcalloc(2, sizeof(struct bin_attribute), GFP_ATOMIC); if (!b->legacy_io) goto kzalloc_err; sysfs_bin_attr_init(b->legacy_io); b->legacy_io->attr.name = "legacy_io"; b->legacy_io->size = 0xffff; b->legacy_io->attr.mode = 0600; b->legacy_io->read = pci_read_legacy_io; b->legacy_io->write = pci_write_legacy_io; b->legacy_io->mmap = pci_mmap_legacy_io; pci_adjust_legacy_attr(b, pci_mmap_io); error = device_create_bin_file(&b->dev, b->legacy_io); if (error) goto legacy_io_err; /* Allocated above after the legacy_io struct */ b->legacy_mem = b->legacy_io + 1; sysfs_bin_attr_init(b->legacy_mem); b->legacy_mem->attr.name = "legacy_mem"; b->legacy_mem->size = 1024*1024; b->legacy_mem->attr.mode = 0600; b->legacy_mem->mmap = pci_mmap_legacy_mem; pci_adjust_legacy_attr(b, pci_mmap_mem); error = device_create_bin_file(&b->dev, b->legacy_mem); if (error) goto legacy_mem_err; return; legacy_mem_err: device_remove_bin_file(&b->dev, b->legacy_io); legacy_io_err: kfree(b->legacy_io); b->legacy_io = NULL; kzalloc_err: dev_warn(&b->dev, "could not create legacy I/O port and ISA memory resources in sysfs\n"); } void pci_remove_legacy_files(struct pci_bus *b) { if (b->legacy_io) { device_remove_bin_file(&b->dev, b->legacy_io); device_remove_bin_file(&b->dev, b->legacy_mem); kfree(b->legacy_io); /* both are allocated here */ } } #endif /* HAVE_PCI_LEGACY */ #if defined(HAVE_PCI_MMAP) || defined(ARCH_GENERIC_PCI_MMAP_RESOURCE) int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vma, enum pci_mmap_api mmap_api) { unsigned long nr, start, size; resource_size_t pci_start = 0, pci_end; if (pci_resource_len(pdev, resno) == 0) return 0; nr = vma_pages(vma); start = vma->vm_pgoff; size = ((pci_resource_len(pdev, resno) - 1) >> PAGE_SHIFT) + 1; if (mmap_api == PCI_MMAP_PROCFS) { pci_resource_to_user(pdev, resno, &pdev->resource[resno], &pci_start, &pci_end); pci_start >>= PAGE_SHIFT; } if (start >= pci_start && start < pci_start + size && start + nr <= pci_start + size) return 1; return 0; } /** * pci_mmap_resource - map a PCI resource into user memory space * @kobj: kobject for mapping * @attr: struct bin_attribute for the file being mapped * @vma: struct vm_area_struct passed into the mmap * @write_combine: 1 for write_combine mapping * * Use the regular PCI mapping routines to map a PCI resource into userspace. */ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, struct vm_area_struct *vma, int write_combine) { struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); int bar = (unsigned long)attr->private; enum pci_mmap_state mmap_type; struct resource *res = &pdev->resource[bar]; if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(res->start)) return -EINVAL; if (!pci_mmap_fits(pdev, bar, vma, PCI_MMAP_SYSFS)) return -EINVAL; mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io; return pci_mmap_resource_range(pdev, bar, vma, mmap_type, write_combine); } static int pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, struct vm_area_struct *vma) { return pci_mmap_resource(kobj, attr, vma, 0); } static int pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, struct vm_area_struct *vma) { return pci_mmap_resource(kobj, attr, vma, 1); } static ssize_t pci_resource_io(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count, bool write) { struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); int bar = (unsigned long)attr->private; unsigned long port = off; port += pci_resource_start(pdev, bar); if (port > pci_resource_end(pdev, bar)) return 0; if (port + count - 1 > pci_resource_end(pdev, bar)) return -EINVAL; switch (count) { case 1: if (write) outb(*(u8 *)buf, port); else *(u8 *)buf = inb(port); return 1; case 2: if (write) outw(*(u16 *)buf, port); else *(u16 *)buf = inw(port); return 2; case 4: if (write) outl(*(u32 *)buf, port); else *(u32 *)buf = inl(port); return 4; } return -EINVAL; } static ssize_t pci_read_resource_io(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { return pci_resource_io(filp, kobj, attr, buf, off, count, false); } static ssize_t pci_write_resource_io(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { return pci_resource_io(filp, kobj, attr, buf, off, count, true); } /** * pci_remove_resource_files - cleanup resource files * @pdev: dev to cleanup * * If we created resource files for @pdev, remove them from sysfs and * free their resources. */ static void pci_remove_resource_files(struct pci_dev *pdev) { int i; for (i = 0; i < PCI_ROM_RESOURCE; i++) { struct bin_attribute *res_attr; res_attr = pdev->res_attr[i]; if (res_attr) { sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); kfree(res_attr); } res_attr = pdev->res_attr_wc[i]; if (res_attr) { sysfs_remove_bin_file(&pdev->dev.kobj, res_attr); kfree(res_attr); } } } static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine) { /* allocate attribute structure, piggyback attribute name */ int name_len = write_combine ? 13 : 10; struct bin_attribute *res_attr; char *res_attr_name; int retval; res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC); if (!res_attr) return -ENOMEM; res_attr_name = (char *)(res_attr + 1); sysfs_bin_attr_init(res_attr); if (write_combine) { pdev->res_attr_wc[num] = res_attr; sprintf(res_attr_name, "resource%d_wc", num); res_attr->mmap = pci_mmap_resource_wc; } else { pdev->res_attr[num] = res_attr; sprintf(res_attr_name, "resource%d", num); if (pci_resource_flags(pdev, num) & IORESOURCE_IO) { res_attr->read = pci_read_resource_io; res_attr->write = pci_write_resource_io; if (arch_can_pci_mmap_io()) res_attr->mmap = pci_mmap_resource_uc; } else { res_attr->mmap = pci_mmap_resource_uc; } } res_attr->attr.name = res_attr_name; res_attr->attr.mode = 0600; res_attr->size = pci_resource_len(pdev, num); res_attr->private = (void *)(unsigned long)num; retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr); if (retval) kfree(res_attr); return retval; } /** * pci_create_resource_files - create resource files in sysfs for @dev * @pdev: dev in question * * Walk the resources in @pdev creating files for each resource available. */ static int pci_create_resource_files(struct pci_dev *pdev) { int i; int retval; /* Expose the PCI resources from this device as files */ for (i = 0; i < PCI_ROM_RESOURCE; i++) { /* skip empty resources */ if (!pci_resource_len(pdev, i)) continue; retval = pci_create_attr(pdev, i, 0); /* for prefetchable resources, create a WC mappable file */ if (!retval && arch_can_pci_mmap_wc() && pdev->resource[i].flags & IORESOURCE_PREFETCH) retval = pci_create_attr(pdev, i, 1); if (retval) { pci_remove_resource_files(pdev); return retval; } } return 0; } #else /* !HAVE_PCI_MMAP */ int __weak pci_create_resource_files(struct pci_dev *dev) { return 0; } void __weak pci_remove_resource_files(struct pci_dev *dev) { return; } #endif /* HAVE_PCI_MMAP */ /** * pci_write_rom - used to enable access to the PCI ROM display * @filp: sysfs file * @kobj: kernel object handle * @bin_attr: struct bin_attribute for this file * @buf: user input * @off: file offset * @count: number of byte in input * * writing anything except 0 enables it */ static ssize_t pci_write_rom(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); if ((off == 0) && (*buf == '0') && (count == 2)) pdev->rom_attr_enabled = 0; else pdev->rom_attr_enabled = 1; return count; } /** * pci_read_rom - read a PCI ROM * @filp: sysfs file * @kobj: kernel object handle * @bin_attr: struct bin_attribute for this file * @buf: where to put the data we read from the ROM * @off: file offset * @count: number of bytes to read * * Put @count bytes starting at @off into @buf from the ROM in the PCI * device corresponding to @kobj. */ static ssize_t pci_read_rom(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); void __iomem *rom; size_t size; if (!pdev->rom_attr_enabled) return -EINVAL; rom = pci_map_rom(pdev, &size); /* size starts out as PCI window size */ if (!rom || !size) return -EIO; if (off >= size) count = 0; else { if (off + count > size) count = size - off; memcpy_fromio(buf, rom + off, count); } pci_unmap_rom(pdev, rom); return count; } static const struct bin_attribute pci_config_attr = { .attr = { .name = "config", .mode = 0644, }, .size = PCI_CFG_SPACE_SIZE, .read = pci_read_config, .write = pci_write_config, }; static const struct bin_attribute pcie_config_attr = { .attr = { .name = "config", .mode = 0644, }, .size = PCI_CFG_SPACE_EXP_SIZE, .read = pci_read_config, .write = pci_write_config, }; static ssize_t reset_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct pci_dev *pdev = to_pci_dev(dev); unsigned long val; ssize_t result = kstrtoul(buf, 0, &val); if (result < 0) return result; if (val != 1) return -EINVAL; pm_runtime_get_sync(dev); result = pci_reset_function(pdev); pm_runtime_put(dev); if (result < 0) return result; return count; } static DEVICE_ATTR(reset, 0200, NULL, reset_store); static int pci_create_capabilities_sysfs(struct pci_dev *dev) { int retval; pcie_vpd_create_sysfs_dev_files(dev); pcie_aspm_create_sysfs_dev_files(dev); if (dev->reset_fn) { retval = device_create_file(&dev->dev, &dev_attr_reset); if (retval) goto error; } return 0; error: pcie_aspm_remove_sysfs_dev_files(dev); pcie_vpd_remove_sysfs_dev_files(dev); return retval; } int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev) { int retval; int rom_size; struct bin_attribute *attr; if (!sysfs_initialized) return -EACCES; if (pdev->cfg_size > PCI_CFG_SPACE_SIZE) retval = sysfs_create_bin_file(&pdev->dev.kobj, &pcie_config_attr); else retval = sysfs_create_bin_file(&pdev->dev.kobj, &pci_config_attr); if (retval) goto err; retval = pci_create_resource_files(pdev); if (retval) goto err_config_file; /* If the device has a ROM, try to expose it in sysfs. */ rom_size = pci_resource_len(pdev, PCI_ROM_RESOURCE); if (rom_size) { attr = kzalloc(sizeof(*attr), GFP_ATOMIC); if (!attr) { retval = -ENOMEM; goto err_resource_files; } sysfs_bin_attr_init(attr); attr->size = rom_size; attr->attr.name = "rom"; attr->attr.mode = 0600; attr->read = pci_read_rom; attr->write = pci_write_rom; retval = sysfs_create_bin_file(&pdev->dev.kobj, attr); if (retval) { kfree(attr); goto err_resource_files; } pdev->rom_attr = attr; } /* add sysfs entries for various capabilities */ retval = pci_create_capabilities_sysfs(pdev); if (retval) goto err_rom_file; pci_create_firmware_label_files(pdev); return 0; err_rom_file: if (pdev->rom_attr) { sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); kfree(pdev->rom_attr); pdev->rom_attr = NULL; } err_resource_files: pci_remove_resource_files(pdev); err_config_file: if (pdev->cfg_size > PCI_CFG_SPACE_SIZE) sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); else sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); err: return retval; } static void pci_remove_capabilities_sysfs(struct pci_dev *dev) { pcie_vpd_remove_sysfs_dev_files(dev); pcie_aspm_remove_sysfs_dev_files(dev); if (dev->reset_fn) { device_remove_file(&dev->dev, &dev_attr_reset); dev->reset_fn = 0; } } /** * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files * @pdev: device whose entries we should free * * Cleanup when @pdev is removed from sysfs. */ void pci_remove_sysfs_dev_files(struct pci_dev *pdev) { if (!sysfs_initialized) return; pci_remove_capabilities_sysfs(pdev); if (pdev->cfg_size > PCI_CFG_SPACE_SIZE) sysfs_remove_bin_file(&pdev->dev.kobj, &pcie_config_attr); else sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr); pci_remove_resource_files(pdev); if (pdev->rom_attr) { sysfs_remove_bin_file(&pdev->dev.kobj, pdev->rom_attr); kfree(pdev->rom_attr); pdev->rom_attr = NULL; } pci_remove_firmware_label_files(pdev); } static int __init pci_sysfs_init(void) { struct pci_dev *pdev = NULL; int retval; sysfs_initialized = 1; for_each_pci_dev(pdev) { retval = pci_create_sysfs_dev_files(pdev); if (retval) { pci_dev_put(pdev); return retval; } } return 0; } late_initcall(pci_sysfs_init); static struct attribute *pci_dev_dev_attrs[] = { &dev_attr_boot_vga.attr, NULL, }; static umode_t pci_dev_attrs_are_visible(struct kobject *kobj, struct attribute *a, int n) { struct device *dev = kobj_to_dev(kobj); struct pci_dev *pdev = to_pci_dev(dev); if (a == &dev_attr_boot_vga.attr) if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA) return 0; return a->mode; } static struct attribute *pci_dev_hp_attrs[] = { &dev_attr_remove.attr, &dev_attr_dev_rescan.attr, NULL, }; static umode_t pci_dev_hp_attrs_are_visible(struct kobject *kobj, struct attribute *a, int n) { struct device *dev = kobj_to_dev(kobj); struct pci_dev *pdev = to_pci_dev(dev); if (pdev->is_virtfn) return 0; return a->mode; } static umode_t pci_bridge_attrs_are_visible(struct kobject *kobj, struct attribute *a, int n) { struct device *dev = kobj_to_dev(kobj); struct pci_dev *pdev = to_pci_dev(dev); if (pci_is_bridge(pdev)) return a->mode; return 0; } static umode_t pcie_dev_attrs_are_visible(struct kobject *kobj, struct attribute *a, int n) { struct device *dev = kobj_to_dev(kobj); struct pci_dev *pdev = to_pci_dev(dev); if (pci_is_pcie(pdev)) return a->mode; return 0; } static const struct attribute_group pci_dev_group = { .attrs = pci_dev_attrs, }; const struct attribute_group *pci_dev_groups[] = { &pci_dev_group, NULL, }; static const struct attribute_group pci_bridge_group = { .attrs = pci_bridge_attrs, }; const struct attribute_group *pci_bridge_groups[] = { &pci_bridge_group, NULL, }; static const struct attribute_group pcie_dev_group = { .attrs = pcie_dev_attrs, }; const struct attribute_group *pcie_dev_groups[] = { &pcie_dev_group, NULL, }; static const struct attribute_group pci_dev_hp_attr_group = { .attrs = pci_dev_hp_attrs, .is_visible = pci_dev_hp_attrs_are_visible, }; static const struct attribute_group pci_dev_attr_group = { .attrs = pci_dev_dev_attrs, .is_visible = pci_dev_attrs_are_visible, }; static const struct attribute_group pci_bridge_attr_group = { .attrs = pci_bridge_attrs, .is_visible = pci_bridge_attrs_are_visible, }; static const struct attribute_group pcie_dev_attr_group = { .attrs = pcie_dev_attrs, .is_visible = pcie_dev_attrs_are_visible, }; static const struct attribute_group *pci_dev_attr_groups[] = { &pci_dev_attr_group, &pci_dev_hp_attr_group, #ifdef CONFIG_PCI_IOV &sriov_dev_attr_group, #endif &pci_bridge_attr_group, &pcie_dev_attr_group, #ifdef CONFIG_PCIEAER &aer_stats_attr_group, #endif NULL, }; const struct device_type pci_dev_type = { .groups = pci_dev_attr_groups, };
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-09 13:14:21 -0400