aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/85xx
Commit message (Collapse)AuthorAge
* powerpc: Convert fsl_rstcr_restart to a reset handlerAndrey Smirnov2016-09-25
| | | | | | | | | Convert fsl_rstcr_restart into a function to be registered with register_reset_handler(). Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> [scottwood: Converted mvme7100 as well] Signed-off-by: Scott Wood <oss@buserror.net>
* powerpc/sgy_cts1000: Fix gpio_halt_cb()'s signatureAndrey Smirnov2016-09-25
| | | | | | | | | | | | Halt callback in struct machdep_calls is declared with __noreturn attribute, so omitting that attribute in gpio_halt_cb()'s signatrue results in compilation error. Change the signature to address the problem as well as change the code of the function to avoid ever returning from the function. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Scott Wood <oss@buserror.net>
* powerpc/mpc85xx_mds: Select PHYLIB only if NETDEVICES is enabledAndrey Smirnov2016-09-25
| | | | | | | | | | | PHYLIB depends on NETDEVICES, so to avoid unmet dependencies warning from Kconfig it needs to be selected conditionally. Also add checks if PHYLIB is built-in to avoid undefined references to PHYLIB's symbols. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Scott Wood <oss@buserror.net>
* powerpc: Remove all usages of NO_IRQMichael Ellerman2016-09-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NO_IRQ has been == 0 on powerpc for just over ten years (since commit 0ebfff1491ef ("[POWERPC] Add new interrupt mapping core and change platforms to use it")). It's also 0 on most other arches. Although it's fairly harmless, every now and then it causes confusion when a driver is built on powerpc and another arch which doesn't define NO_IRQ. There's at least 6 definitions of NO_IRQ in drivers/, at least some of which are to work around that problem. So we'd like to remove it. This is fairly trivial in the arch code, we just convert: if (irq == NO_IRQ) to if (!irq) if (irq != NO_IRQ) to if (irq) irq = NO_IRQ; to irq = 0; return NO_IRQ; to return 0; And a few other odd cases as well. At least for now we keep the #define NO_IRQ, because there is driver code that uses NO_IRQ and the fixes to remove those will go via other trees. Note we also change some occurrences in PPC sound drivers, drivers/ps3, and drivers/macintosh. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
* Merge tag 'powerpc-4.8-1' of ↵Linus Torvalds2016-07-31
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Highlights: - PowerNV PCI hotplug support. - Lots more Power9 support. - eBPF JIT support on ppc64le. - Lots of cxl updates. - Boot code consolidation. Bug fixes: - Fix spin_unlock_wait() from Boqun Feng - Fix stack pointer corruption in __tm_recheckpoint() from Michael Neuling - Fix multiple bugs in memory_hotplug_max() from Bharata B Rao - mm: Ensure "special" zones are empty from Oliver O'Halloran - ftrace: Separate the heuristics for checking call sites from Michael Ellerman - modules: Never restore r2 for a mprofile-kernel style mcount() call from Michael Ellerman - Fix endianness when reading TCEs from Alexey Kardashevskiy - start rtasd before PCI probing from Greg Kurz - PCI: rpaphp: Fix slot registration for multiple slots under a PHB from Tyrel Datwyler - powerpc/mm: Add memory barrier in __hugepte_alloc() from Sukadev Bhattiprolu Cleanups & fixes: - Drop support for MPIC in pseries from Rashmica Gupta - Define and use PPC64_ELF_ABI_v2/v1 from Michael Ellerman - Remove unused symbols in asm-offsets.c from Rashmica Gupta - Fix SRIOV not building without EEH enabled from Russell Currey - Remove kretprobe_trampoline_holder from Thiago Jung Bauermann - Reduce log level of PCI I/O space warning from Benjamin Herrenschmidt - Add array bounds checking to crash_shutdown_handlers from Suraj Jitindar Singh - Avoid -maltivec when using clang integrated assembler from Anton Blanchard - Fix array overrun in ppc_rtas() syscall from Andrew Donnellan - Fix error return value in cmm_mem_going_offline() from Rasmus Villemoes - export cpu_to_core_id() from Mauricio Faria de Oliveira - Remove old symbols from defconfigs from Andrew Donnellan - Update obsolete comments in setup_32.c about entry conditions from Benjamin Herrenschmidt - Add comment explaining the purpose of setup_kdump_trampoline() from Benjamin Herrenschmidt - Merge the RELOCATABLE config entries for ppc32 and ppc64 from Kevin Hao - Remove RELOCATABLE_PPC32 from Kevin Hao - Fix .long's in tlb-radix.c to more meaningful from Balbir Singh Minor cleanups & fixes: - Andrew Donnellan, Anna-Maria Gleixner, Anton Blanchard, Benjamin Herrenschmidt, Bharata B Rao, Christophe Leroy, Colin Ian King, Geliang Tang, Greg Kurz, Madhavan Srinivasan, Michael Ellerman, Michael Ellerman, Stephen Rothwell, Stewart Smith. Freescale updates from Scott: - "Highlights include more 8xx optimizations, device tree updates, and MVME7100 support." PowerNV PCI hotplug from Gavin Shan: - PCI: Add pcibios_setup_bridge() - Override pcibios_setup_bridge() - Remove PCI_RESET_DELAY_US - Move pnv_pci_ioda_setup_opal_tce_kill() around - Increase PE# capacity - Allocate PE# in reverse order - Create PEs in pcibios_setup_bridge() - Setup PE for root bus - Extend PCI bridge resources - Make pnv_ioda_deconfigure_pe() visible - Dynamically release PE - Update bridge windows on PCI plug - Delay populating pdn - Support PCI slot ID - Use PCI slot reset infrastructure - Introduce pnv_pci_get_slot_id() - Functions to get/set PCI slot state - PCI/hotplug: PowerPC PowerNV PCI hotplug driver - Print correct PHB type names Power9 idle support from Shreyas B. Prabhu: - set power_save func after the idle states are initialized - Use PNV_THREAD_WINKLE macro while requesting for winkle - make hypervisor state restore a function - Rename idle_power7.S to idle_book3s.S - Rename reusable idle functions to hardware agnostic names - Make pnv_powersave_common more generic - abstraction for saving SPRs before entering deep idle states - Add platform support for stop instruction - cpuidle/powernv: Use CPUIDLE_STATE_MAX instead of MAX_POWERNV_IDLE_STATES - cpuidle/powernv: cleanup cpuidle-powernv.c - cpuidle/powernv: Add support for POWER ISA v3 idle states - Use deepest stop state when cpu is offlined Power9 PMU from Madhavan Srinivasan: - factor out power8 pmu macros and defines - factor out power8 pmu functions - factor out power8 __init_pmu code - Add power9 event list macros for generic and cache events - Power9 PMU support - Export Power9 generic and cache events to sysfs Power9 preliminary interrupt & PCI support from Benjamin Herrenschmidt: - Add XICS emulation APIs - Move a few exception common handlers to make room - Add support for HV virtualization interrupts - Add mechanism to force a replay of interrupts - Add ICP OPAL backend - Discover IODA3 PHBs - pci: Remove obsolete SW invalidate - opal: Add real mode call wrappers - Rename TCE invalidation calls - Remove SWINV constants and obsolete TCE code - Rework accessing the TCE invalidate register - Fallback to OPAL for TCE invalidations - Use the device-tree to get available range of M64's - Check status of a PHB before using it - pci: Don't try to allocate resources that will be reassigned Other Power9: - Send SIGBUS on unaligned copy and paste from Chris Smart - Large Decrementer support from Oliver O'Halloran - Load Monitor Register Support from Jack Miller Performance improvements from Anton Blanchard: - Avoid load hit store in __giveup_fpu() and __giveup_altivec() - Avoid load hit store in setup_sigcontext() - Remove assembly versions of strcpy, strcat, strlen and strcmp - Align hot loops of some string functions eBPF JIT from Naveen N. Rao: - Fix/enhance 32-bit Load Immediate implementation - Optimize 64-bit Immediate loads - Introduce rotate immediate instructions - A few cleanups - Isolate classic BPF JIT specifics into a separate header - Implement JIT compiler for extended BPF Operator Panel driver from Suraj Jitindar Singh: - devicetree/bindings: Add binding for operator panel on FSP machines - Add inline function to get rc from an ASYNC_COMP opal_msg - Add driver for operator panel on FSP machines Sparse fixes from Daniel Axtens: - make some things static - Introduce asm-prototypes.h - Include headers containing prototypes - Use #ifdef __BIG_ENDIAN__ #else for REG_BYTE - kvm: Clarify __user annotations - Pass endianness to sparse - Make ppc_md.{halt, restart} __noreturn MM fixes & cleanups from Aneesh Kumar K.V: - radix: Update LPCR HR bit as per ISA - use _raw variant of page table accessors - Compile out radix related functions if RADIX_MMU is disabled - Clear top 16 bits of va only on older cpus - Print formation regarding the the MMU mode - hash: Update SDR1 size encoding as documented in ISA 3.0 - radix: Update PID switch sequence - radix: Update machine call back to support new HCALL. - radix: Add LPID based tlb flush helpers - radix: Add a kernel command line to disable radix - Cleanup LPCR defines Boot code consolidation from Benjamin Herrenschmidt: - Move epapr_paravirt_early_init() to early_init_devtree() - cell: Don't use flat device-tree after boot - ge_imp3a: Don't use the flat device-tree after boot - mpc85xx_ds: Don't use the flat device-tree after boot - mpc85xx_rdb: Don't use the flat device-tree after boot - Don't test for machine type in rtas_initialize() - Don't test for machine type in smp_setup_cpu_maps() - dt: Add of_device_compatible_match() - Factor do_feature_fixup calls - Move 64-bit feature fixup earlier - Move 64-bit memory reserves to setup_arch() - Use a cachable DART - Move FW feature probing out of pseries probe() - Put exception configuration in a common place - Remove early allocation of the SMU command buffer - Move MMU backend selection out of platform code - pasemi: Remove IOBMAP allocation from platform probe() - mm/hash: Don't use machine_is() early during boot - Don't test for machine type to detect HEA special case - pmac: Remove spurrious machine type test - Move hash table ops to a separate structure - Ensure that ppc_md is empty before probing for machine type - Move 64-bit probe_machine() to later in the boot process - Move 32-bit probe() machine to later in the boot process - Get rid of ppc_md.init_early() - Move the boot time info banner to a separate function - Move setting of {i,d}cache_bsize to initialize_cache_info() - Move the content of setup_system() to setup_arch() - Move cache info inits to a separate function - Re-order the call to smp_setup_cpu_maps() - Re-order setup_panic() - Make a few boot functions __init - Merge 32-bit and 64-bit setup_arch() Other new features: - tty/hvc: Use IRQF_SHARED for OPAL hvc consoles from Sam Mendoza-Jonas - tty/hvc: Use opal irqchip interface if available from Sam Mendoza-Jonas - powerpc: Add module autoloading based on CPU features from Alastair D'Silva - crypto: vmx - Convert to CPU feature based module autoloading from Alastair D'Silva - Wake up kopald polling thread before waiting for events from Benjamin Herrenschmidt - xmon: Dump ISA 2.06 SPRs from Michael Ellerman - xmon: Dump ISA 2.07 SPRs from Michael Ellerman - Add a parameter to disable 1TB segs from Oliver O'Halloran - powerpc/boot: Add OPAL console to epapr wrappers from Oliver O'Halloran - Assign fixed PHB number based on device-tree properties from Guilherme G. Piccoli - pseries: Add pseries hotplug workqueue from John Allen - pseries: Add support for hotplug interrupt source from John Allen - pseries: Use kernel hotplug queue for PowerVM hotplug events from John Allen - pseries: Move property cloning into its own routine from Nathan Fontenot - pseries: Dynamic add entires to associativity lookup array from Nathan Fontenot - pseries: Auto-online hotplugged memory from Nathan Fontenot - pseries: Remove call to memblock_add() from Nathan Fontenot cxl: - Add set and get private data to context struct from Michael Neuling - make base more explicitly non-modular from Paul Gortmaker - Use for_each_compatible_node() macro from Wei Yongjun - Frederic Barrat - Abstract the differences between the PSL and XSL - Make vPHB device node match adapter's - Philippe Bergheaud - Add mechanism for delivering AFU driver specific events - Ignore CAPI adapters misplaced in switched slots - Refine slice error debug messages - Andrew Donnellan - static-ify variables to fix sparse warnings - PCI/hotplug: pnv_php: export symbols and move struct types needed by cxl - PCI/hotplug: pnv_php: handle OPAL_PCI_SLOT_OFFLINE power state - Add cxl_check_and_switch_mode() API to switch bi-modal cards - remove dead Kconfig options - fix potential NULL dereference in free_adapter() - Ian Munsie - Update process element after allocating interrupts - Add support for CAPP DMA mode - Fix allowing bogus AFU descriptors with 0 maximum processes - Fix allocating a minimum of 2 pages for the SPA - Fix bug where AFU disable operation had no effect - Workaround XSL bug that does not clear the RA bit after a reset - Fix NULL pointer dereference on kernel contexts with no AFU interrupts - powerpc/powernv: Split cxl code out into a separate file - Add cxl_slot_is_supported API - Enable bus mastering for devices using CAPP DMA mode - Move cxl_afu_get / cxl_afu_put to base - Allow a default context to be associated with an external pci_dev - Do not create vPHB if there are no AFU configuration records - powerpc/powernv: Add support for the cxl kernel api on the real phb - Add support for using the kernel API with a real PHB - Add kernel APIs to get & set the max irqs per context - Add preliminary workaround for CX4 interrupt limitation - Add support for interrupts on the Mellanox CX4 - Workaround PE=0 hardware limitation in Mellanox CX4 - powerpc/powernv: Fix pci-cxl.c build when CONFIG_MODULES=n selftests: - Test unaligned copy and paste from Chris Smart - Load Monitor Register Tests from Jack Miller - Cyril Bur - exec() with suspended transaction - Use signed long to read perf_event_paranoid - Fix usage message in context_switch - Fix generation of vector instructions/types in context_switch - Michael Ellerman - Use "Delta" rather than "Error" in normal output - Import Anton's mmap & futex micro benchmarks - Add a test for PROT_SAO" * tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (263 commits) powerpc/mm: Parenthesise IS_ENABLED() in if condition tty/hvc: Use opal irqchip interface if available tty/hvc: Use IRQF_SHARED for OPAL hvc consoles selftests/powerpc: exec() with suspended transaction powerpc: Improve comment explaining why we modify VRSAVE powerpc/mm: Drop unused externs for hpte_init_beat[_v3]() powerpc/mm: Rename hpte_init_lpar() and move the fallback to a header powerpc/mm: Fix build break when PPC_NATIVE=n crypto: vmx - Convert to CPU feature based module autoloading powerpc: Add module autoloading based on CPU features powerpc/powernv/ioda: Fix endianness when reading TCEs powerpc/mm: Add memory barrier in __hugepte_alloc() powerpc/modules: Never restore r2 for a mprofile-kernel style mcount() call powerpc/ftrace: Separate the heuristics for checking call sites powerpc: Merge 32-bit and 64-bit setup_arch() powerpc/64: Make a few boot functions __init powerpc: Re-order setup_panic() powerpc: Re-order the call to smp_setup_cpu_maps() powerpc/32: Move cache info inits to a separate function powerpc/64: Move the content of setup_system() to setup_arch() ...
| * powerpc: Move 32-bit probe() machine to later in the boot processBenjamin Herrenschmidt2016-07-21
| | | | | | | | | | | | | | | | | | | | | | This converts all the 32-bit platforms to use the expanded device-tree which is a pretty mechanical change. Unlike 64-bit, the 32-bit kernel didn't rely on platform initializations to setup the MMU since it sets it up entirely before probe_machine() so the move has comparatively less consequences though it's a bigger patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * powerpc: Make ppc_md.{halt, restart} __noreturnDaniel Axtens2016-07-14
| | | | | | | | | | | | | | | | | | | | | | | | powernv marks it's halt and restart calls as __noreturn. However, ppc_md does not have this annotation. Add the annotation to ppc_md, and then to every halt/restart function that is missing it. Additionally, I have verified that all of these functions do not return. Occasionally I have added a spin loop to be sure. Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * powerpc/85xx/mpc85xx_rdb: Don't use the flat device-tree after bootBenjamin Herrenschmidt2016-07-13
| | | | | | | | | | Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * powerpc/85xx/mpc85xx_ds: Don't use the flat device-tree after bootBenjamin Herrenschmidt2016-07-13
| | | | | | | | | | Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| * powerpc/85xx/ge_imp3a: Don't use the flat device-tree after bootBenjamin Herrenschmidt2016-07-13
| | | | | | | | | | | | | | | | ge_imp3a_pic_init() is called way beyond the unflattening of the tree, it shouldn't be using of_flat_dt_* Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
* | powerpc: do away with ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIBLinus Walleij2016-06-08
|/ | | | | | | | | | | | | | | | | | | | | | | | This replaces: - "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB" as this can now be selected directly. - "select ARCH_WANT_OPTIONAL_GPIOLIB" with no dependency: GPIOLIB is now selectable by everyone, so we need not declare our intent to select it. When ordering the symbols the following rationale was used: if the selects were in alphabetical order, I moved select GPIOLIB to be in alphabetical order, but if the selects were not maintained in alphabetical order, I just replaced "select ARCH_REQUIRE_GPIOLIB" with "select GPIOLIB". Cc: Michael Büsch <m@bues.ch> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* powerpc/mpc85xx: Add CPU hotplug support for E6500chenhui zhao2016-03-05
| | | | | | | Support Freescale E6500 core-based platforms, like t4240. Support disabling/enabling individual CPU thread dynamically. Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
* powerpc/mpc85xx: Add hotplug support on E5500 and E500MC coreschenhui zhao2016-03-05
| | | | | | | | | | | Freescale E500MC and E5500 core-based platforms, like P4080, T1040, support disabling/enabling CPU dynamically. This patch adds this feature on those platforms. Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> Signed-off-by: Tang Yuantian <Yuantian.Tang@feescale.com> [scottwood: removed unused pr_fmt] Signed-off-by: Scott Wood <oss@buserror.net>
* powerpc/mpc85xx: refactor the PM operationschenhui zhao2016-03-05
| | | | | | | | | | | Freescale CoreNet-based and Non-CoreNet-based platforms require different PM operations. This patch extracted existing PM operations on Non-CoreNet-based platforms to a new file which can accommodate both platforms. In this way, PM operation codes are clearer structurally. Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> Signed-off-by: Tang Yuantian <Yuantian.Tang@feescale.com> Signed-off-by: Scott Wood <oss@buserror.net>
* powerpc/rcpm: add RCPM driverchenhui zhao2016-03-05
| | | | | | | | | | | | | | There is a RCPM (Run Control/Power Management) in Freescale QorIQ series processors. The device performs tasks associated with device run control and power management. The driver implements some features: mask/unmask irq, enter/exit low power states, freeze time base, etc. Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com> [scottwood: remove __KERNEL__ ifdef] Signed-off-by: Scott Wood <oss@buserror.net>
* powerpc/cache: add cache flush operation for various e500chenhui zhao2016-03-05
| | | | | | | | | | | | Various e500 core have different cache architecture, so they need different cache flush operations. Therefore, add a callback function cpu_flush_caches to the struct cpu_spec. The cache flush operation for the specific kind of e500 is selected at init time. The callback function will flush all caches inside the current cpu. Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> Signed-off-by: Tang Yuantian <Yuantian.Tang@feescale.com> Signed-off-by: Scott Wood <oss@buserror.net>
* powerpc: Fix misspellings in comments.Adam Buchbinder2016-03-01
| | | | | Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
* powerpc/85xx: mpc85xx ADS: remove pci excludeDaniel Walker2015-12-22
| | | | | | | | | | | | | | | | | | | | | | This code was reworked in commit, 905e75c46dba5f3061049277e4eb7110beedba43 This change removed the fsl_add_bridge() which originally was above the addition of the pci_exclude_device function. I think the assumption was that the pci_exclude_device would prevent changes to the bridge PCI config after it's been added. It seems it wasn't fully tested on MPC85xx ADS because if you move the fsl_add_bridge() the pci_exclude_device is set in the machine description then you can never update the PCI Config since the exclude prevents it. This disrupts things like DMA. This issue was extensively debugged by David Beazley. Cc: xe-kernel@external.cisco.com Cc: dbeazley@cisco.com Cc: dwalker@fifo99.com Signed-off-by: Daniel Walker <danielwa@cisco.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* powerpc/85xx: Add PCIe controller support for bsc9132qdsHarninder Rai2015-12-22
| | | | | | | | | | | | | | | | | | 1. Use machine_arch_initcall to hook mpc85xx_common_publish_devices This can ensure before pcibios_init() is called, pci controllers have been probed and added to the hose_list. 2. Add a workaround for errata A-005434 For the BSC9132, PEX_PEXIWARn[TRGT] for all windows defaults to 0xF, which is mapped to CCSRBAR. However, for other products, 0xF is mapped to the local memory. Therefore, for the BSC9132, any default PCI Express access to the local memory (DDR) will now access the CCSRBAR. This patch changes the mapping of targets of inbound windows PEX_PEXIWARn[TRGT] to the Local address space – 0x0 (from 0xF). Signed-off-by: Harninder Rai <harninder.rai@freescale.com> Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> Signed-off-by: Hou Zhiqiang <B48286@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* QE: Move QE from arch/powerpc to drivers/socZhao Qiang2015-12-22
| | | | | | | | | ls1 has qe and ls1 has arm cpu. move qe from arch/powerpc to drivers/soc/fsl to adapt to powerpc and arm Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* QE: use subsys_initcall to init qeZhao Qiang2015-12-22
| | | | | | | | Use subsys_initcall to init qe to adapt ARM architecture. Remove qe_reset from PowerPC platform file. Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* Merge branch 'clock' into HEADScott Wood2015-10-27
|\ | | | | | | | | | | This is a major overhaul of the clk-qoriq driver, which I'm merging via PPC with Stephen Boyd's ack in order to apply subsequent PPC patches that depend on it.
| * powerpc/fsl: Move fsl_guts.h out of arch/powerpcScott Wood2015-10-21
| | | | | | | | | | | | Freescale's Layerscape ARM chips use the same structure. Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/e6500: kexec: Handle hardware threadsScott Wood2015-10-27
| | | | | | | | | | | | | | The new kernel will be expecting secondary threads to be disabled, not spinning. Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/85xx: Implement 64-bit kexec supportTiejun Chen2015-10-27
| | | | | | | | | | | | | | | | Unlike 32-bit 85xx kexec, we don't do a core reset. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> [scottwood: edit changelog, and cleanup] Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/85xx: Don't use generic timebase sync on 64-bitScott Wood2015-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 85xx currently uses the generic timebase sync mechanism when CONFIG_KEXEC is enabled, because 32-bit 85xx kexec support does a hard reset of each core. 64-bit 85xx kexec does not do this, so we neither need nor want this (nor is the generic timebase sync code built on ppc64). FWIW, I don't like the fact that the hard reset is done on 32-bit kexec, and I especially don't like the timebase sync being triggered only on the presence of CONFIG_KEXEC rather than actually booting in that environment, but that's beyond the scope of this patch... Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/fsl-corenet: Disable coreint if kexec is enabledScott Wood2015-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Problems have been observed in coreint (EPR) mode if interrupts are left pending (due to the lack of device quiescence with kdump) after having tried to deliver to a CPU but unable to deliver due to MSR[EE] -- interrupts no longer get reliably delivered in the new kernel. I tried various ways of fixing it up inside the crash kernel itself, and none worked (including resetting the entire mpic). Masking all interrupts and issuing EOIs in the crashing kernel did help a lot of the time, but the behavior was not consistent. Thus, stick to standard IACK mode when kdump is a possibility. Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/fsl-booke-64: Allow booting from the secondary threadScott Wood2015-10-17
| | | | | | | | | | | | | | | | | | | | This allows SMP kernels to work as kdump crash kernels. While crash kernels don't really need to be SMP, this prevents things from breaking if a user does it anyway (which is not something you want to only find out once the main kernel has crashed in the field, especially if whether it works or not depends on which cpu crashed). Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/85xx: Add support for Varisys Cyrus boardAndy Fleming2015-10-17
| | | | | | | | | | | | | | | | | | | | | | This board uses a P5020 chip, and boots just fine using the corenet_generic code. The device tree is very similar to the P5020DS, except that there is no Flash memory. The environment is, instead, stored on an MMC card on the motherboard. Signed-off-by: Andy Fleming <afleming@gmail.com> [scottwood: fixed trailing whitespace] Signed-off-by: Scott Wood <scottwood@freescale.com>
* | powerpc/corenet: use the mixed mode of MPIC when enabling CPU hotplugchenhui zhao2015-10-16
| | | | | | | | | | | | | | | | Core reset may cause issue if using the proxy mode of MPIC. Use the mixed mode of MPIC if enabling CPU hotplug. Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | genirq: Remove irq argument from irq flow handlersThomas Gleixner2015-09-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
* | powerpc/85xx: Prepare irq handlers for irq argument removalThomas Gleixner2015-09-14
|/ | | | | | | | | | | | | | | The irq argument of most interrupt flow handlers is unused or merily used instead of a local variable. The handlers which need the irq argument can retrieve the irq number from the irq descriptor. Search and update was done with coccinelle and the invaluable help of Julia Lawall. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Scott Wood <scottwood@freescale.com> Cc: linuxppc-dev@lists.ozlabs.org
* powerpc/fsl-booke: Add T1040D4RDB/T1042D4RDB board supportPriyanka Jain2015-08-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | T1040D4RDB/T1042D4RDB are Freescale Reference Design Board which can support T1040/T1042 QorIQ Power Architecture™ processor respectively T1040D4RDB/T1042D4RDB board Overview ------------------------------------- - SERDES Connections, 8 lanes supporting: - PCI - SGMII - SATA 2.0 - QSGMII(only for T1040D4RDB) - DDR Controller - Supports rates of up to 1600 MHz data-rate - Supports one DDR4 UDIMM -IFC/Local Bus - NAND flash: 1GB 8-bit NAND flash - NOR: 128MB 16-bit NOR Flash - Ethernet - Two on-board RGMII 10/100/1G ethernet ports. - PHY #0 remains powered up during deep-sleep - CPLD - Clocks - System and DDR clock (SYSCLK, “DDRCLK”) - SERDES clocks - Power Supplies - USB - Supports two USB 2.0 ports with integrated PHYs - Two type A ports with 5V@1.5A per port. - SDHC - SDHC/SDXC connector - SPI - On-board 64MB SPI flash - I2C - Devices connected: EEPROM, thermal monitor, VID controller - Other IO - Two Serial ports - ProfiBus port Add support for T1040/T1042D4RDB board: -add device tree -Add entry in corenet_generic.c Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* powerpc/85xx: Remove unused pci fixup hooks on c293pcieHou Zhiqiang2015-08-17
| | | | | | | | The c293pcie board is an endpoint device and it doesn't need PM, so remove hooks pcibios_fixup_phb and pcibios_fixup_bus. Signed-off-by: Hou Zhiqiang <B48286@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* powerpc/85xx: p1025twr: add module conditional to fix QE-uart issueXie Xiaobo2015-06-02
| | | | | | | | | | A ioport setting was needed when used the QE uart function on TWR-P1025. Added a conditional definition to avoid missing this setting when the QE-uart driver was bulit to a module. Signed-off-by: Xie Xiaobo <X.Xie@freescale.com> Signed-off-by: Li Pengbo <Pengbo.Li@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* powerpc: mpc85xx: flush the l1 cache before cpu down in kexecKevin Hao2015-06-02
| | | | | | | | | | | | | | | | | | | | We observe a "Zero PT_NOTE entries found" warning when vmcore_init() is running on the dump-capture kernel. Actually the PT_NOTE segments is not empty, but the entries generated by crash_save_cpu() are not flushed to the memory before we reset these cores. So we should flush the l1 cache as what we do in cpu hotplug. With this change, we can also kill the mpc85xx_smp_flush_dcache_kexec() since that becomes unnecessary. Please note: this only fix the issue on e500 core, we still need to implement the function to flush the l2 cache for the e500mc core. Fortunately we already had proposing patch for this support [1]. Hope we can fix this issue for e500mc after that merged. [1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2014-March/115830.html Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* powerpc/fsl-booke: Add T1023 RDB board supportShengzhou Liu2015-06-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | T1023RDB is a Freescale Reference Design Board that hosts T1023 SoC. T1023RDB board Overview ----------------------- - T1023 SoC integrating two 64-bit e5500 cores up to 1.4GHz - CoreNet fabric supporting coherent and noncoherent transactions with prioritization and bandwidth allocation - Memory: 2GB Micron MT40A512M8HX unbuffered 32-bit fixed DDR4 without ECC - Accelerator: DPAA components consist of FMan, BMan, QMan, DCE and SEC - Ethernet interfaces: - one 1G RGMII port on-board(RTL8211F PHY) - one 1G SGMII port on-board(RTL8211F PHY) - one 2.5G SGMII port on-board(AQR105 PHY) - PCIe: Two Mini-PCIe connectors on-board. - SerDes: 4 lanes up to 10.3125GHz - NOR: 128MB S29GL01GS110TFIV10 Spansion NOR Flash - NAND: 512MB S34MS04G200BFI000 Spansion NAND Flash - eSPI: 64MB S25FL512SAGMFI010 Spansion SPI flash - USB: one Type-A USB 2.0 port with internal PHY - eSDHC: support SD/MMC card and eMMC flash on-board - 256Kbit M24256 I2C EEPROM - RTC: Real-time clock DS1339 on I2C bus - UART: one serial port on-board with RJ45 connector - Debugging: JTAG/COP for T1023 debugging Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* powerpc/fsl-booke: Add T1024 RDB board supportShengzhou Liu2015-06-02
| | | | | | | | | T1024RDB is a Freescale Reference Design Board that hosts the T1024 SoC. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> [scottwood: vendor prefix: s/at24/atmel/ and trimmed detailed board description with too-long lines] Signed-off-by: Scott Wood <scottwood@freescale.com>
* powerpc/fsl-booke: Add T1024 QDS board supportShengzhou Liu2015-06-02
| | | | | | | | | | | | Add support for Freescale T1024/T1023 QorIQ Development System Board. T1024QDS is a high-performance computing evaluation, development and test platform for T1024 QorIQ Power Architecture processor. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> [scottwood: vendor prefix: s/at24/atmel/ and trimmed detailed board description with too-long lines] Signed-off-by: Scott Wood <scottwood@freescale.com>
* Merge tag 'powerpc-4.1-1' of ↵Linus Torvalds2015-04-16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux Pull powerpc updates from Michael Ellerman: - Numerous minor fixes, cleanups etc. - More EEH work from Gavin to remove its dependency on device_nodes. - Memory hotplug implemented entirely in the kernel from Nathan Fontenot. - Removal of redundant CONFIG_PPC_OF by Kevin Hao. - Rewrite of VPHN parsing logic & tests from Greg Kurz. - A fix from Nish Aravamudan to reduce memory usage by clamping nodes_possible_map. - Support for pstore on powernv from Hari Bathini. - Removal of old powerpc specific byte swap routines by David Gibson. - Fix from Vasant Hegde to prevent the flash driver telling you it was flashing your firmware when it wasn't. - Patch from Ben Herrenschmidt to add an OPAL heartbeat driver. - Fix for an oops causing get/put_cpu_var() imbalance in perf by Jan Stancek. - Some fixes for migration from Tyrel Datwyler. - A new syscall to switch the cpu endian by Michael Ellerman. - Large series from Wei Yang to implement SRIOV, reviewed and acked by Bjorn. - A fix for the OPAL sensor driver from Cédric Le Goater. - Fixes to get STRICT_MM_TYPECHECKS building again by Michael Ellerman. - Large series from Daniel Axtens to make our PCI hooks per PHB rather than per machine. - Small patch from Sam Bobroff to explicitly abort non-suspended transactions on syscalls, plus a test to exercise it. - Numerous reworks and fixes for the 24x7 PMU from Sukadev Bhattiprolu. - Small patch to enable the hard lockup detector from Anton Blanchard. - Fix from Dave Olson for missing L2 cache information on some CPUs. - Some fixes from Michael Ellerman to get Cell machines booting again. - Freescale updates from Scott: Highlights include BMan device tree nodes, an MSI erratum workaround, a couple minor performance improvements, config updates, and misc fixes/cleanup. * tag 'powerpc-4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (196 commits) powerpc/powermac: Fix build error seen with powermac smp builds powerpc/pseries: Fix compile of memory hotplug without CONFIG_MEMORY_HOTREMOVE powerpc: Remove PPC32 code from pseries specific find_and_init_phbs() powerpc/cell: Fix iommu breakage caused by controller_ops change powerpc/eeh: Fix crash in eeh_add_device_early() on Cell powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH powerpc/perf/hv-24x7: Fail 24x7 initcall if create_events_from_catalog() fails powerpc/pseries: Correct memory hotplug locking powerpc: Fix missing L2 cache size in /sys/devices/system/cpu powerpc: Add ppc64 hard lockup detector support oprofile: Disable oprofile NMI timer on ppc64 powerpc/perf/hv-24x7: Add missing put_cpu_var() powerpc/perf/hv-24x7: Break up single_24x7_request powerpc/perf/hv-24x7: Define update_event_count() powerpc/perf/hv-24x7: Whitespace cleanup powerpc/perf/hv-24x7: Define add_event_to_24x7_request() powerpc/perf/hv-24x7: Rename hv_24x7_event_update powerpc/perf/hv-24x7: Move debug prints to separate function powerpc/perf/hv-24x7: Drop event_24x7_request() powerpc/perf/hv-24x7: Use pr_devel() to log message ... Conflicts: tools/testing/selftests/powerpc/Makefile tools/testing/selftests/powerpc/tm/Makefile
| * powerpc/mpc85xx: call k(un)map_atomic rather than k(un)mapYanjiang Jin2015-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The k(un)map function may be called in atomic context in the function map_and_flush(), so use k(un)map_atomic to replace it, else we would get the below warning during kdump: BUG: sleeping function called from invalid context at include/linux/highmem.h:58 in_atomic(): 1, irqs_disabled(): 1, pid: 736, name: sh INFO: lockdep is turned off. irq event stamp: 0 hardirqs last enabled at (0): [< (null)>] (null) hardirqs last disabled at (0): [<c000000000066d1c>] .copy_process.part.44+0x50c/0x1360 softirqs last enabled at (0): [<c000000000066d1c>] .copy_process.part.44+0x50c/0x1360 softirqs last disabled at (0): [< (null)>] (null) CPU: 1 PID: 736 Comm: sh Tainted: G D W 3.10.62-ltsi-WR6.0.0.0_standard #2 Call Trace: [c0000000f47cf120] [c00000000000b150] .show_stack+0x170/0x290 (unreliable) [c0000000f47cf210] [c000000000b71334] .dump_stack+0x28/0x3c [c0000000f47cf280] [c0000000000bb5d8] .__might_sleep+0x1a8/0x270 [c0000000f47cf310] [c0000000000440cc] .map_and_flush+0x4c/0xc0 [c0000000f47cf390] [c0000000000441cc] .mpc85xx_smp_machine_kexec+0x8c/0xec0 [c0000000f47cf420] [c00000000002ae00] .machine_kexec+0x60/0x90 [c0000000f47cf4b0] [c00000000010957c] .crash_kexec+0x8c/0x100 [c0000000f47cf6a0] [c000000000015df8] .die+0x348/0x450 [c0000000f47cf740] [c00000000002f3a0] .bad_page_fault+0xe0/0x130 [c0000000f47cf7c0] [c00000000001f3e4] storage_fault_common+0x40/0x44 Signed-off-by: Yanjiang Jin <yanjiang.jin@windriver.com> [scottwood@freescale.com: fix subject line] Signed-off-by: Scott Wood <scottwood@freescale.com>
| * powerpc/corenet: Enable muxing MDIO buses via FPGAShruti Kanetkar2015-03-23
| | | | | | | | | | | | | | | | Signed-off-by: Andy Fleming <afleming@gmail.com> Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com> Signed-off-by: Shruti Kanetkar <Kanetkar.Shruti@gmail.com> Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * powerpc/corenet: Enable muxing MDIO buses via GPIOAndy Fleming2015-03-23
| | | | | | | | | | | | | | | | Signed-off-by: Andy Fleming <afleming@gmail.com> Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com> Signed-off-by: Shruti Kanetkar <Kanetkar.Shruti@gmail.com> Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
| * powerpc/mpc85xx: Add FMan platform supportIgal Liberman2015-03-23
| | | | | | | | | | | | | | Get the FMan devices/sub-nodes (MAC, MDIO, etc.) auto-probed Signed-off-by: Igal Liberman <Igal.Liberman@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2015-04-14
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "Usual trivial tree updates. Nothing outstanding -- mostly printk() and comment fixes and unused identifier removals" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: goldfish: goldfish_tty_probe() is not using 'i' any more powerpc: Fix comment in smu.h qla2xxx: Fix printks in ql_log message lib: correct link to the original source for div64_u64 si2168, tda10071, m88ds3103: Fix firmware wording usb: storage: Fix printk in isd200_log_config() qla2xxx: Fix printk in qla25xx_setup_mode init/main: fix reset_device comment ipwireless: missing assignment goldfish: remove unreachable line of code coredump: Fix do_coredump() comment stacktrace.h: remove duplicate declaration task_struct smpboot.h: Remove unused function prototype treewide: Fix typo in printk messages treewide: Fix typo in printk messages mod_devicetable: fix comment for match_flags
| * treewide: Fix typo in printk messagesMasanari Iida2015-03-06
| | | | | | | | | | | | | | | | This patch fix spelling typo in printk messages. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | powerpc/85xx: Add support for Emerson/Artesyn MVME2500.Alessio Igor Bogani2015-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the Artesyn MVME2500 Single Board Computer. The MVME2500 is a 6U form factor VME64 computer with: - A single Freescale QorIQ P2010 CPU - 1 GB of DDR3 onboard memory - Three Gigabit Ethernets - Five 16550 compatible UARTS - One USB 2.0 port, one SHDC socket and one SATA connector - One PCI/PCI eXpress Mezzanine Card (PMC/XMC) Slot - MultiProcessor Interrupt Controller (MPIC) - A DS1375T Real Time Clock (RTC) and 512 KB of Non-Volatile Memory - Two 64 KB EEPROMs - U-Boot in 16 SPI Flash This patch is based on linux-3.18 and has been boot tested. Signed-off-by: Alessio Igor Bogani <alessio.bogani@elettra.eu> Signed-off-by: Scott Wood <scottwood@freescale.com>
* | Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds2014-12-14
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
| * | powerpc: platforms: 85xx: drop owner assignment from platform_driversWolfram Sang2014-10-20
| |/ | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* / powerpc: Convert power off logic to pm_power_offAlexander Graf2014-11-02
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | The generic Linux framework to power off the machine is a function pointer called pm_power_off. The trick about this pointer is that device drivers can potentially implement it rather than board files. Today on powerpc we set pm_power_off to invoke our generic full machine power off logic which then calls ppc_md.power_off to invoke machine specific power off. However, when we want to add a power off GPIO via the "gpio-poweroff" driver, this card house falls apart. That driver only registers itself if pm_power_off is NULL to ensure it doesn't override board specific logic. However, since we always set pm_power_off to the generic power off logic (which will just not power off the machine if no ppc_md.power_off call is implemented), we can't implement power off via the generic GPIO power off driver. To fix this up, let's get rid of the ppc_md.power_off logic and just always use pm_power_off as was intended. Then individual drivers such as the GPIO power off driver can implement power off logic via that function pointer. With this patch set applied and a few patches on top of QEMU that implement a power off GPIO on the virt e500 machine, I can successfully turn off my virtual machine after halt. Signed-off-by: Alexander Graf <agraf@suse.de> [mpe: Squash into one patch and update changelog based on cover letter] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-08 20:51:44 -0400