- 06 11月, 2013 6 次提交
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由 Benjamin Herrenschmidt 提交于
When restoring the PPR value, we incorrectly access the thread structure at a time where MSR:RI is clear, which means we cannot recover from nested faults. However the thread structure isn't covered by the "bolted" SLB entries and thus accessing can fault. This fixes it by splitting the code so that the PPR value is loaded into a GPR before MSR:RI is cleared. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Gavin Shan 提交于
We're assigning PE numbers after the completion of PCI probe. During the PCI probe, we had PE#0 as the super container to encompass all PCI devices. However, that's inappropriate since PELTM has ascending order of priority on search on P7IOC. So we need PE#127 takes the role that PE#0 has previously. For PHB3, we still have PE#0 as the reserved PE. The patch supposes that the underly firmware has built the RID to PE# mapping after resetting IODA tables: all PELTM entries except last one has invalid mapping on P7IOC, but all RTEs have binding to PE#0. The reserved PE# is being exported by firmware by device tree. Signed-off-by: NGavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Gavin Shan 提交于
We need add PE to its own PELTV. Otherwise, the errors originated from the PE might contribute to other PEs. In the result, we can't clear up the error successfully even we're checking and clearing errors during access to PCI config space. Cc: stable@vger.kernel.org Reported-by: kalshett@in.ibm.com Signed-off-by: NGavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
Indirect XSCOM addresses normally have the top bit set (of the 64-bit address). This doesn't work via the normal debugfs interface, so we use a different encoding, which we need to convert before calling OPAL. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
The current debugfs interface to scom is essentially unused and racy. It uses two different files "address" and "data" to perform accesses which is at best impractical for anything but manual use by a developer. This replaces it with an "access" file which represent the entire scom address space which can be lseek/read/writen too. This file only supports accesses that are 8 bytes aligned and multiple of 8 bytes in size. The offset is logically the SCOM address multiplied by 8. Since nothing in userspace exploits that file at the moment, the ABI change is a no-brainer. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Benjamin Herrenschmidt 提交于
On P8, XSCOM addresses has a special "indirect" form that requires more than 32-bits, so let's use u64 everywhere in the code instead of u32. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 05 11月, 2013 1 次提交
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由 Benjamin Herrenschmidt 提交于
The wrapper script needs an explicit rule for the "of" boot wrapper (generic wrapper, similar to pseries). Before 0c9fa291 it was hanlded implicitly by the statement: platformo=$object/"$platform".o But now that epapr.o needs to be added, that doesn't work and an explicit rule must be added. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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- 04 11月, 2013 1 次提交
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由 Benjamin Herrenschmidt 提交于
Fixes for build issues when LPB FIFO driver is configured as a module, removal of #ifdefs in mpc512x DIU platform code and a revert of recent changes to mpc52xx PIC driver. Wolfram provided a better fix for PIC driver build issue popping up when older gcc-4.3.5 is used.
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- 31 10月, 2013 16 次提交
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由 Vladimir Murzin 提交于
commit b6069a95 (filter: add MOD operation) added generic support for modulus operation in BPF. This patch brings JIT support for PPC64 Signed-off-by: NVladimir Murzin <murzin.v@gmail.com> Acked-by: NMatt Evans <matt@ozlabs.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Vladimir Murzin 提交于
Currently DIVWU stands for *signed* divw opcode: 7d 2a 4b 96 divwu r9,r10,r9 7d 2a 4b d6 divw r9,r10,r9 Use the *unsigned* divw opcode for DIVWU. Suggested-by: NVassili Karpov <av1474@comtv.ru> Reviewed-by: NVassili Karpov <av1474@comtv.ru> Signed-off-by: NVladimir Murzin <murzin.v@gmail.com> Acked-by: NMatt Evans <matt@ozlabs.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Sudeep KarkadaNagesha 提交于
Since the definition of_find_next_cache_node is architecture independent, the existing definition in powerpc can be moved to driver/of/base.c Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com> Signed-off-by: NSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Sudeep KarkadaNagesha 提交于
Currently big endianness of the device tree data is assumed in of_find_next_cache_node for 'handle' when calling of_find_node_by_phandle. In preparation to move this function to common code, this patch fixes the endianness using 'be32_to_cpup' Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <rob.herring@calxeda.com> Signed-off-by: NSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Michael Neuling 提交于
We currently turn IRQs off in __switch_to(0 but this is unnecessary as it's already disabled in the caller. This removes the IRQ disable but adds a check to make sure it is really off in case this changes in future. Signed-off-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Philippe Bergheaud 提交于
This is an optimization for the PowerPC in 64-bit little-endian. Bit counting is used in find_zero(), instead of the multiply and shift. It is modelled after Alan Modra's PowerPC LE strlen patch http://sourceware.org/ml/libc-alpha/2013-08/msg00097.html. Signed-off-by: NPhilippe Bergheaud <felix@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Philippe Bergheaud 提交于
This enables the Berkeley Packet Filter JIT compiler for the PowerPC running in 64bit Little Endian. Signed-off-by: NPhilippe Bergheaud <felix@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Dan Streetman 提交于
Currently, when not in hypervisor mode the kernel Oopses during suspend or hibernation when accessing the SDR1 register, because it is only available in hypervisor mode. Access to it needs to be protected in BEGIN/END_FW_FTR_SECTION. Signed-off-by: NDan Streetman <ddstreet@ieee.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reported-by: NJimmy Pan <jipan@redhat.com> Tested-by: NJimmy Pan <jipan@redhat.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Christian Kujau 提交于
for quite some time the following is printed (twice) after doing "make oldconfig": [...] scripts/kconfig/conf --oldconfig Kconfig warning: (ADB_PMU_LED_IDE) selects LEDS_TRIGGER_IDE_DISK which has unmet direct dependencies (NEW_LEDS && IDE_GD_ATA && LEDS_TRIGGERS) warning: (ADB_PMU_LED_IDE) selects LEDS_TRIGGER_IDE_DISK which has unmet direct dependencies (NEW_LEDS && IDE_GD_ATA && LEDS_TRIGGERS) The following patch causes ADB_PMU_LED to depend on IDE_GD_ATA, so that the options above are only available when IDE_GD_ATA is actually selected and thus eliminates the warning. Signed-off-by: NChristian Kujau <lists@nerdbynature.de> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Cedric Le Goater 提交于
When reading partitions, the length has to be translated from big endian to the endian order of the host. Similarly, when writing partitions, the length needs to be in big endian order. The userspace tool 'nvram' needs a similar fix as it is reading and writing partitions through /dev/nram : http://sourceforge.net/p/powerpc-utils/mailman/message/31571277/Signed-off-by: NCedric Le Goater <clg@fr.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Cedric Le Goater 提交于
Signed-off-by: NCedric Le Goater <clg@fr.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Cedric Le Goater 提交于
nvram_scan_partitions() is called twice when initializing the "lnx,oops-log" partition and the "ibm,rtas-log" partition. This fills the partition list with duplicate entries. This patch moves the partition scan in the init routine pseries_nvram_init_log_partitions() which is called only once. Signed-off-by: NCedric Le Goater <clg@fr.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Brian Norris 提交于
Several functions are only ever referenced locally, so make them static. Of those functions, many of them are protected by an #if. However, the code which can compile fine in either case. Now that (1) the unneeded code is marked 'static' and (2) the code is only used under a C 'if (IS_ENABLED(CONFIG_FB_FSL_DIU))', the compiler can automatically remove the unneeded code, and we don't need the #if or the empty stub functions. Signed-off-by: NBrian Norris <computersforpeace@gmail.com> Signed-off-by: NAnatolij Gustschin <agust@denx.de>
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由 Anatolij Gustschin 提交于
The MPC5200 LPBFIFO driver requires the bestcomm module to be enabled, otherwise building will fail. Fix it. Cc: <stable@vger.kernel.org> # 3.10+ Reported-by: NWolfgang Denk <wd@denx.de> Signed-off-by: NAnatolij Gustschin <agust@denx.de>
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由 Wolfram Sang 提交于
This more or less reverts commit 6391f697. Instead of adding an unneeded 'default', mark the variable to prevent the false positive 'uninitialized var'. The other change (fixing the printout) needs revert, too. We want to know WHICH critical irq failed, not which level it had. Signed-off-by: NWolfram Sang <wsa@the-dreams.de> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Anatolij Gustschin <agust@denx.de> Acked-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: NAnatolij Gustschin <agust@denx.de>
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由 Gerhard Sittig 提交于
a disabled Kconfig option results in a reference to a not implemented routine when the IS_ENABLED() macro is used for both conditional implementation of the routine as well as a C language source code test at the call site -- the "if (0) func();" construct only gets eliminated later by the optimizer, while the compiler already has emitted its warning about "func()" being undeclared provide an empty implementation for the mpc512x_setup_diu() and mpc512x_init_diu() routines in case of the disabled option, to avoid the compiler warning which is considered fatal and breaks compilation the bug appeared with commit 2abbbb63 "powerpc/mpc512x: move common code to shared.c file", how to reproduce: make mpc512x_defconfig echo CONFIG_FB_FSL_DIU=n >> .config && make olddefconfig make CC arch/powerpc/platforms/512x/mpc512x_shared.o .../arch/powerpc/platforms/512x/mpc512x_shared.c: In function 'mpc512x_init_early': .../arch/powerpc/platforms/512x/mpc512x_shared.c:456:3: error: implicit declaration of function 'mpc512x_init_diu' [-Werror=implicit-function-declaration] .../arch/powerpc/platforms/512x/mpc512x_shared.c: In function 'mpc512x_setup_arch': .../arch/powerpc/platforms/512x/mpc512x_shared.c:469:3: error: implicit declaration of function 'mpc512x_setup_diu' [-Werror=implicit-function-declaration] cc1: all warnings being treated as errors make[4]: *** [arch/powerpc/platforms/512x/mpc512x_shared.o] Error 1 Signed-off-by: NGerhard Sittig <gsi@denx.de> CC: <stable@vger.kernel.org> # v3.11 Signed-off-by: NAnatolij Gustschin <agust@denx.de>
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- 30 10月, 2013 16 次提交
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由 Vasant Hegde 提交于
Code update interface for powernv platform. This provides sysfs interface to pass new image, validate, update and commit images. This patch includes: - Below OPAL APIs for code update - opal_validate_flash() - opal_manage_flash() - opal_update_flash() - Create below sysfs files under /sys/firmware/opal - image : Interface to pass new FW image - validate_flash : Validate candidate image - manage_flash : Commit/Reject operations - update_flash : Flash new candidate image Updating Image: "update_flash" is an interface to indicate flash new FW. It just passes image SG list to FW. Actual flashing is done during system reboot time. Note: - SG entry format: I have kept version number to keep this list similar to what PAPR is defined. Signed-off-by: NVasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Vasant Hegde 提交于
Create /sys/firmware/opal directory. We wil use this interface to fetch opal error logs, firmware update, etc. Signed-off-by: NVasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Add a VMX optimised xor, used primarily for RAID5. On a POWER7 blade this is a decent win: 32regs : 17932.800 MB/sec altivec : 19724.800 MB/sec The bigger gain is when the same test is run in SMT4 mode, as it would if there was a lot of work going on: 8regs : 8377.600 MB/sec altivec : 15801.600 MB/sec I tested this against an array created without the patch, and also verified it worked as expected on a little endian kernel. [ Fix !CONFIG_ALTIVEC build -- BenH ] Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Geert Uytterhoeven 提交于
Correct reference to the location of the kexec_sequence() assembly helper. There never was a kexec_stub.S in mainline. Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
The condition register (CR) is a 32 bit quantity so we should use 32 bit loads and stores. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Enable a few modules required to boot on a POWER multipath box. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Run savedefconfig over the ppc64, ppc64e and pseries config Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Using -mcpu=power7 allows gcc to use a number of new instructions including 64 bit byte reversed loads. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
commit f13c13a0 (powerpc: Stop using non-architected shared_proc field in lppaca) fixed a potential issue with shared/dedicated partition detection. The old method of detection relied on an unarchitected field (shared_proc), and this patch switched to using something architected (a non zero yield_count). Unfortunately the assertion in the Linux header that yield_count is only non zero on shared processor partitions is not true. It turns out dedicated processor partitions can increment yield_count and as such we falsely detect dedicated partitions as shared. Fix the comment, and switch back to using the old method. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tom Musta 提交于
This patch addresses unaligned single precision floating point loads and stores in the single-step code. The old implementation improperly treated an 8 byte structure as an array of two 4 byte words, which is a classic little endian bug. Signed-off-by: NTom Musta <tmusta@gmail.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tom Musta 提交于
This patch modifies the unaligned access routines of the sstep.c module so that it properly reverses the bytes of storage operands in the little endian kernel kernel. This is implemented by breaking an unaligned little endian access into a combination of single byte accesses plus an overal byte reversal operation. Signed-off-by: NTom Musta <tmusta@gmail.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tom Musta 提交于
This patch enables alignment handling for the load/store floating point pair instructions (lfdp, lfdpx, stfdp, stfdpx). The handler routine is properly coded and only needs to be enabled. Signed-off-by: NTom Musta <tmusta@gmail.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Tom Musta 提交于
The alignment handler is incorrect for unaligned string instructions in little endian mode. These instructions access data as arrays of bytes and thus are endian neutral. However, the routine also handles the load/store multiple instructions, which are NOT endian neutral. This patch toggles the byte swapping flag for the string instructions in little endian builds. This effectively disables the byte swapping logic. Signed-off-by: NTom Musta <tmusta@gmail.com> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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由 Anton Blanchard 提交于
This issue was causing the QEMU emulated USB device to fail dring PCI probe. Signed-off-by: NAnton Blanchard <anton@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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