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2012-09-14Merge branch 'for-3.7/common-clk' into for-3.7/cleanup2Stephen Warren15-4733/+5055
2012-09-14Merge branch 'for-3.7/board-removal' into for-3.7/cleanup2Stephen Warren15-1340/+257
2012-09-14ARM: dt: tegra: harmony: configure power offStephen Warren1-0/+2
Add DT property to tell the TPS6586x that it should provide the pm_power_off() implementation. This allows "shutdown" to work. Signed-off-by: Stephen Warren <[email protected]>
2012-09-14ARM: dt: tegra: harmony: add regulatorsLaxman Dewangan6-208/+249
Harmony uses a TPS6586x regulator. Instantiate this, and hook up a couple of fixed GPIO-controlled regulators too. Based on Ventana regulator patch by Stephen Warren <[email protected]> and converted to Harmony. swarren made the following changes: * Added ldo0 regulator configuration to device tree, and updated board-harmony-pcie.c for the new regulator name. * Fixed vdd_1v05's voltage from 10.5V to 1.05V. * Modified board-harmony-pcie.c to obtain the en_vdd_1v05 GPIO number at run-time from device tree instead of hard-coding it. * Removed board-harmony{-power.c,.h} now that they're unused. * Disabled vdd_1v05 regulator; the code in board-harmony-pcie.c hijacks this GPIO for now. This will be fixed when the PCIe driver is re- written as a driver. The code can't regulator_get("vdd_1v05") right now, because the vdd_1v05 regulator's probe gets deferred due to its supply being the PMIC, which gets probed after the regulator the first time around, and this dependency is only resolved by repeated probing, which happens when deferred_probe_initcall() is called, which happens in a late initcall, whose runtime order relative to harmony_pcie_init() is undefined, since that's also called from a late initcall. * Removed unused harmony_pcie_initcall(). Signed-off-by: Laxman Dewangan <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-14ARM: tegra: remove board (but not DT) support for HarmonyStephen Warren7-399/+19
Harmony can be booted using device tree with equal functionality as when booted using a board file. Remove as much of the board file as is possible, since it's no longer needed. Two special-cases are still left in board-dt-tegra20.c, since the Tegra PCIe driver doesn't support device tree yet, and the Harmony .dts file doesn't yet describe regulators which are needed for PCIe. This logic is now enabled unconditionally rather than via CONFIG_MACH_HARMONY. While this is more code than other boards, it's still unlikely to be much of a problem, and both regulators and PCIe should be supported via device tree in the near future, allowing the remaining code to be removed. Signed-off-by: Stephen Warren <[email protected]>
2012-09-14ARM: tegra: remove board (but not DT) support for Paz00Stephen Warren6-376/+2
Paz00 (Toshiba AC100) can be booted using device tree with equal functionality as when booted using a board file. Remove as much of the board file as is possible, since it's no longer needed. One special-case is still left in board-dt-tegra20.c, since there is no way to create a WiFi rfkill device from device tree yet. This logic is now enabled unconditionally rather than via CONFIG_MACH_PAZ00. The extra cases where it's enabled (.configs which did not enable Paz00 support) shouldn't impact much since the amount of code is tiny. Signed-off-by: Stephen Warren <[email protected]> Acked-By: Marc Dietrich <[email protected]>
2012-09-14ARM: tegra: remove board (but not DT) support for TrimSliceStephen Warren6-382/+2
TrimSlice can be booted using device tree with equal functionality as when booted using a board file. Remove the board file since it's no longer needed. One special-case is still left in board-dt-tegra20.c, since the Tegra PCIe driver doesn't support device tree yet. This logic is now enabled by CONFIG_TEGRA_PCI rather than via CONFIG_MACH_TRIMSLICE. The extra cases where it's enabled (.configs which did not enable TrimSlice support) shouldn't impact much since the amount of code is tiny. Signed-off-by: Stephen Warren <[email protected]>
2012-09-13ARM: Tegra: Add smp_twd clock for Tegra20Prashant Gaikwad3-0/+50
Clockevent's frequency is changed upon cpufreq change notification. It fetches local timer's rate to update the clockevent frequency. This patch adds local timer clock for Tegra20. Signed-off-by: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-11ARM: tegra: cpu-tegra: explicitly manage re-parentingStephen Warren1-1/+47
When changing a PLL's rate, it must have no active children. The CPU clock cannot be stopped, and CPU clock's divider is not used. The old clock driver used to handle this by internally reparenting the CPU clock onto a different PLL when changing the CPU clock rate. However, the new common-clock based clock driver does not do this, and probably cannot do this due to the locking issues it would cause. To solve this, have the Tegra cpufreq driver explicitly perform the reparenting operations itself. This is probably reasonable anyway, since such reparenting is somewhat a matter of policy (e.g. which alternate clock source to use, whether to leave the CPU clock a child of the alternate clock source if it's running at the desired rate), and hence is something more appropriate for the cpufreq driver than the core clock driver anyway. Cc: Prashant Gaikwad <[email protected]> Cc: Peter De Schrijver <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-11ARM: tegra: fix overflow in tegra20_pll_clk_round_rate()Stephen Warren1-1/+1
32-bit math isn't enough when e.g. *prate=12000000, and sel->n=1000. Use 64-bit math to prevent this. Cc: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-07ARM: tegra: Fix data type for io addressPrashant Gaikwad1-6/+6
Warnings were generated because following commit changed data type for address pointer 195bbca ARM: 7500/1: io: avoid writeback addressing modes for __raw_ accessors arch/arm/mach-tegra/tegra30_clocks.c: In function 'clk_measure_input_freq': arch/arm/mach-tegra/tegra30_clocks.c:418:2: warning: passing argument 2 of '__raw_writel' makes pointer from integer without a cast .../arch/arm/include/asm/io.h:88:20: note: expected 'volatile void *' but argument is of type 'unsigned int Signed-off-by: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: remove tegra_timer from tegra_list_clksStephen Warren2-2/+0
tegra_time is a struct sys_timer, not a struct clk, so can't be included in an array of struct clk *. Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra30: clocks: fix the wrong tegra_audio_sync_clk_ops nameJoseph Lo2-2/+2
It should use tegra30_audio_sync_clk_ops for tegra30. It will cause the tegra30 use the wrong audio_sync_clk_ops when build a kernel with a tegra20 and tegra30 both supported kernel. And building error when a tegra30-only kernel. Signed-off-by: Joseph Lo <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: clocks: separate tegra_clk_32k_ops from Tegra20 and Tegra30Joseph Lo4-3/+13
Currently the tegra20 and tegra30 share the same symbol for tegra_clk_32k_ops. This will cause a compile error when building a tegra20-only kernel image. Add tegra_clk_32k_ops for tegra20 and modify tegra30_clk_32k_ops for tegra30. Signed-off-by: Joseph Lo <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: Remove duplicate codePrashant Gaikwad3-724/+0
Remove Tegra legacy clock framework code. Signed-off-by: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: Port tegra to generic clock frameworkPrashant Gaikwad8-2345/+3057
This patch converts tegra clock code to generic clock framework in following way: - Implement clk_ops as required by generic clk framework. (tegraXX_clocks.c) - Use platform specific struct clk_tegra in clk_ops implementation instead of struct clk. - Initialize all clock data statically. (tegraXX_clocks_data.c) Legacy framework did not have recalc_rate and is_enabled functions. Implemented these functions. Removed init function. It's functionality is splitted into recalc_rate and is_enabled. Static initialization is used since slab is not up in .init_early and clock is needed to be initialized before clockevent/clocksource initialization. Macros redefined for clk_tegra. Also, single struct clk_tegra is used for all type of clocks (PLL, peripheral etc.). This is to move quickly to generic common clock framework so that other dependent features will not be blocked (such as DT binding). Enabling COMMON_CLOCK config moved to ARCH_TEGRA since it is enabled for both Tegra20 and Tegra30. Signed-off-by: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: Add clk_tegra structure and helper functionsPrashant Gaikwad4-11/+210
Add Tegra platform specific clock structure clk_tegra and some helper functions for generic clock framework. struct clk_tegra is the single strcture used for all types of clocks. reset and cfg_ex ops moved to clk_tegra from clk_ops. Signed-off-by: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: Rename tegra20 clock filePrashant Gaikwad2-1/+1
Make the name consistent with other files. s/tegra2/tegra20 Signed-off-by: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra20: Separate out clk ops and clk dataPrashant Gaikwad4-1042/+995
Move clock initialization data to separate file. This is required for migrating to generic clock framework if static initialization is used. Signed-off-by: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra30: Separate out clk ops and clk dataPrashant Gaikwad4-1133/+1210
Move clock initialization data to separate file. This is required for migrating to generic clock framework if static initialization is used. Signed-off-by: Prashant Gaikwad <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: fix U16 divider range checkStephen Warren1-1/+1
A U16 divider can divide a clock by 1..64K. However, the range-check in clk_div16_get_divider() limited the range to 1..256. Fix this. NVIDIA's downstream kernels already have the fixed range-check. In practice this is a problem on Whistler's I2C bus, which uses a bus clock rate of 100KHz (rather than the more common 400KHz on Tegra boards), which requires a HW module clock of 8*100KHz. The parent clock is 216MHz, leading to a desired divider of 270. Prior to conversion to the common clock framework, this range error was somehow ignored/irrelevant and caused no problems. However, the common clock framework evidently has more rigorous error-checking, so this failure causes the I2C bus to fail to operate correctly. Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: turn on UART A clock at bootStephen Warren1-0/+1
Some boards use UART D for the main serial console, and some use UART A. UART D's clock is listed in board-dt-tegra20.c's clock table, whereas UART A's clock is not. This causes the clock code to think UART A's clock is unsed. The common clock framework turns off unused clocks at boot time. This makes the kernel appear to hang. Add UART A's clock into the clock table to prevent this. Eventually, this requirement should be handled by the UART driver, and/or properties in a board-specific device tree file. Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: remove duplicate select USE_OFStephen Warren1-1/+0
ARCH_TEGRA (arch/arm/Kconfig) now selects USE_OF, so there's not need for ARCH_TEGRA_3x_SOC to do so too. Signed-off-by: Stephen Warren <[email protected]>
2012-09-06ARM: tegra: use IO_ADDRESS for getting virtual addressLaxman Dewangan2-4/+4
Use macro IO_ADDRESS for getting virtual address of corresponding physical address to make the consistency with rest of Tegra code-base. This macro calls the IO_TO_VIRT() which is defined in arch/arm/mach-tegra/include/mach/iomap.h Signed-off-by: Laxman Dewangan <[email protected]> Signed-off-by: Stephen Warren <[email protected]>
2012-09-06regulator: tps6586x: add support for SYS railLaxman Dewangan1-2/+10
Device have SYS rail which is always ON. It is system power bus. LDO5 and LDO_RTC get powered through this rail internally. Add support for this rail and make the LDO5/LDO_RTC supply by it. Update document accordingly. [swarren: Instantiate the sys regulator from board-harmony-power.c to avoid regression.] Signed-off-by: Laxman Dewangan <[email protected]> Signed-off-by: Stephen Warren <[email protected]> Signed-off-by: Mark Brown <[email protected]>
2012-08-31Merge git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds1-0/+3
Pull KVM bugfixes from Marcelo Tosatti. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: fix KVM_GET_MSR for PV EOI kvm: Fix nonsense handling of compat ioctl
2012-08-31Merge tag 'parisc-fixes' of ↵Linus Torvalds3-7/+7
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6 Pull PARISC fixes from James Bottomley: "This is a set of two bug fixes. One is the ATOMIC problem which is now causing a compile failure in certain situations. The other is mishandling of PER_LINUX32 which may also cause user visible effects. Signed-off-by: James Bottomley <[email protected]>" * tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6: [PARISC] fix personality flag check in copy_thread() [PARISC] Redefine ATOMIC_INIT and ATOMIC64_INIT to drop the casts
2012-08-31Merge branch 'for-linus' of ↵Linus Torvalds3-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "A couple of s390 bug fixes for 3.5-rc4" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/32: Don't clobber personality flags on exec s390/smp: add missing smp_store_status() for !SMP s390/dasd: fix ioctl return value s390: Always use "long" for ssize_t to match size_t
2012-08-30s390/32: Don't clobber personality flags on execHeiko Carstens1-1/+2
In native 32 bit mode the personality flags were not correctly inherited. This is the s390 version of 59e4c3a2 "powerpc/32: Don't clobber personality flags on exec". Reported-by: Mike Frysinger <[email protected]> Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2012-08-28s390/smp: add missing smp_store_status() for !SMPHeiko Carstens1-0/+1
Fix this compile error: arch/s390/kernel/machine_kexec.c: In function ‘setup_regs’: arch/s390/kernel/machine_kexec.c:63:3: error: implicit declaration of function ‘smp_store_status’ [-Werror=implicit-function-declaration] Signed-off-by: Heiko Carstens <[email protected]> Signed-off-by: Martin Schwidefsky <[email protected]>
2012-08-27KVM: x86: fix KVM_GET_MSR for PV EOIMichael S. Tsirkin1-0/+3
KVM_GET_MSR was missing support for PV EOI, which is needed for migration. Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Marcelo Tosatti <[email protected]>
2012-08-25Merge tag 'fixes-3.6-rc3' of ↵Linus Torvalds45-96/+161
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc fixes from Arnd Bergmann: "Bug fixes for various ARM platforms. About half of these are for OMAP and submitted before but did not make it into v3.6-rc2." * tag 'fixes-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (39 commits) ARM: ux500: don't select LEDS_GPIO for snowball ARM: imx: build i.MX6 functions only when needed ARM: imx: select CPU_FREQ_TABLE when needed ARM: imx: fix ksz9021rn_phy_fixup ARM: imx: build pm-imx5 code only when PM is enabled ARM: omap: allow building omap44xx without SMP ARM: dts: imx51-babbage: fix esdhc cd/wp properties ARM: imx6: spin the cpu until hardware takes it down ARM: ux500: Ensure probing of Audio devices when Device Tree is enabled ARM: ux500: Fix merge error, no matching driver name for 'snd_soc_u8500' ARM i.MX6q: Add virtual 1/3.5 dividers in the LDB clock path ARM: Kirkwood: fix Makefile.boot ARM: Kirkwood: Fix iconnect leds ARM: Orion: Set eth packet size csum offload limit ARM: mv78xx0: fix win_cfg_base prototype ARM: OMAP: dmtimers: Fix locking issue in omap_dm_timer_request*() ARM: mmp: fix potential NULL dereference ARM: OMAP4: Register the OPP table only for 4430 device cpufreq: OMAP: Handle missing frequency table on SMP systems ARM: OMAP4: sleep: Save the complete used register stack frame ...
2012-08-25Merge tag 'stable/for-linus-3.6-rc3-tag' of ↵Linus Torvalds5-113/+113
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull three xen bug-fixes from Konrad Rzeszutek Wilk: - Revert the kexec fix which caused on non-kexec shutdowns a race. - Reuse existing P2M leafs - instead of requiring to allocate a large area of bootup virtual address estate. - Fix a one-off error when adding PFNs for balloon pages. * tag 'stable/for-linus-3.6-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/setup: Fix one-off error when adding for-balloon PFNs to the P2M. xen/p2m: Reuse existing P2M leafs if they are filled with 1:1 PFNs or INVALID. Revert "xen PVonHVM: move shared_info to MMIO before kexec"
2012-08-25Merge branch 'merge' of ↵Linus Torvalds20-238/+206
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc fixes from Benjamin Herrenschmidt: "I meant to sent that earlier but got swamped with other things, so here are some powerpc fixes for 3.6. A few regression fixes and some bug fixes that I deemed should still make it. There's a FSL update from Kumar with a bunch of defconfig updates along with a few embedded fixes. I also reverted my g5_defconfig update that I merged earlier as it was completely busted, not too sure what happened there, I'll do a new one later." * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: Revert "powerpc: Update g5_defconfig" powerpc/perf: Use pmc_overflow() to detect rolled back events powerpc: Fix VMX in interrupt check in POWER7 copy loops powerpc: POWER7 copy_to_user/copy_from_user patch applied twice powerpc: Fix personality handling in ppc64_personality() powerpc/dma-iommu: Fix IOMMU window check powerpc: Remove unnecessary ifdefs powerpc/kgdb: Restore current_thread_info properly powerpc/kgdb: Bail out of KGDB when we've been triggered powerpc/kgdb: Do not set kgdb_single_step on ppc powerpc/mpic_msgr: Add missing includes powerpc: Fix null pointer deref in perf hardware breakpoints powerpc: Fixup whitespace in xmon powerpc: Fix xmon dl command for new printk implementation powerpc/fsl: fix "Failed to mount /dev: No such device" errors powerpc/fsl: update defconfigs booke/wdt: some ioctls do not return values properly powerpc/p4080ds: dts - add usb controller version info and port0 powerpc/85xx: mpc85xx_defconfig - add VIA PATA support for MPC85xxCDS powerpc/fsl-pci: Only scan PCI bus if configured as a host
2012-08-25Merge git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds10-23/+64
Pull kvm fixes from Marcelo Tosatti. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86 emulator: use stack size attribute to mask rsp in stack ops KVM: MMU: Fix mmu_shrink() so that it can free mmu pages as intended ppc: e500_tlb memset clears nothing KVM: PPC: Add cache flush on page map KVM: PPC: Book3S HV: Fix incorrect branch in H_CEDE code KVM: x86: update KVM_SAVE_MSRS_BEGIN to correct value
2012-08-25Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds18-105/+145
Pull MIPS fixes from Ralf Baechle: "Random fixes across the MIPS tree. The two hotspots are several bugs in the module loader and the ath79 SOC support; also noteworthy is the restructuring of the code to synchronize CPU timers across CPUs on startup; the old code recently ceased to work due to unrelated changes. All except one of these patches have sat for a significant time in linux-next for testing." * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: pci-ar724x: avoid data bus error due to a missing PCIe module MIPS: Malta: Delete duplicate PCI fixup. MIPS: ath79: don't hardcode the unavailability of the DSP ASE MIPS: Synchronize MIPS count one CPU at a time MIPS: BCM63xx: Fix SPI message control register handling for BCM6338/6348. MIPS: Module: Deal with malformed HI16/LO16 relocation sequences. MIPS: Fix race condition in module relocation code. MIPS: Fix memory leak in error path of HI16/LO16 relocation handling. MIPS: MTX-1: Add udelay to mtx1_pci_idsel MIPS: ath79: select HAVE_CLK MIPS: ath79: Use correct IRQ number for the OHCI controller on AR7240 MIPS: ath79: Fix number of GPIO lines for AR724[12] MIPS: Octeon: Fix broken interrupt controller code.
2012-08-24Revert "powerpc: Update g5_defconfig"Benjamin Herrenschmidt1-30/+73
This reverts commit b1acf1bb544cf28c1f4be0a45620fa899c74b7e9. Something went horribly wrong when I did savedefconfig, not sure what, but what's in there is busted so let's revert it. Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc/perf: Use pmc_overflow() to detect rolled back eventsSukadev Bhattiprolu1-1/+1
For certain speculative events on Power7, 'perf stat' reports far higher event count than 'perf record' for the same event. As described in following commit, a performance monitor exception is raised even when the the performance events are rolled back. commit 0837e3242c73566fc1c0196b4ec61779c25ffc93 Author: Anton Blanchard <[email protected]> Date: Wed Mar 9 14:38:42 2011 +1100 perf_event_interrupt() records an event only when an overflow occurs. But this check for overflow is a simple 'if (val < 0)'. Because the events are rolled back, this check for overflow fails and the event is not recorded. perf_event_interrupt() later uses pmc_overflow() to detect the overflow and resets the counters and the events are lost completely. To properly detect the overflow of rolled back events, use pmc_overflow() even when recording events. To reproduce: $ cat strcpy.c #include <stdio.h> #include <string.h> main() { char buf[256]; alarm(5); while(1) strcpy(buf, "string1"); } $ perf record -e r20014 ./strcpy $ perf report -n > report.1 $ perf stat -e r20014 > report.2 # Compare report.1 and report.2 Reported-by: Maynard Johnson <[email protected]> Signed-off-by: Sukadev Bhattiprolu <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc: Fix VMX in interrupt check in POWER7 copy loopsAnton Blanchard2-4/+4
The enhanced prefetch hint patches corrupt the condition register that was used to check if we are in interrupt. Fix this by using cr1. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc: POWER7 copy_to_user/copy_from_user patch applied twiceAnton Blanchard1-31/+0
"powerpc: Use enhanced touch instructions in POWER7 copy_to_user/copy_from_user" was applied twice. Remove one. Signed-off-by: Anton Blanchard <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc: Fix personality handling in ppc64_personality()Jiri Kosina1-4/+4
Directly comparing current->personality against PER_LINUX32 doesn't work in cases when any of the personality flags stored in the top three bytes are used. Directly forcefully setting personality to PER_LINUX32 or PER_LINUX discards any flags stored in the top three bytes Use personality() macro to compare only PER_MASK bytes and make sure that we are setting only the bits that should be set, instead of overwriting the whole value. Signed-off-by: Jiri Kosina <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc/dma-iommu: Fix IOMMU window checkAaro Koskinen1-5/+4
Checking for device mask to cover the whole IOMMU table is too strict. IOMMU allocators should handle mask constraint properly for each allocation. The patch enables to use old AirPort Extreme cards on PowerMacs with more than 1GB of memory; without the patch the driver init fails with: b43-pci-bridge 0001:01:01.0: Warning: IOMMU window too big for device mask b43-pci-bridge 0001:01:01.0: mask: 0x3fffffff, table end: 0x80000000 b43-phy0 ERROR: The machine/kernel does not support the required 30-bit DMA mask Signed-off-by: Aaro Koskinen <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc: Remove unnecessary ifdefsMichael Neuling1-2/+0
Signed-off-by: Michael Neuling <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc/kgdb: Restore current_thread_info properlyTiejun Chen1-2/+9
For powerpc BooKE and e200, singlestep is handled on the critical/dbg exception stack. This causes current_thread_info() to fail for kgdb internal, so previously We work around this issue by copying the thread_info from the kernel stack before calling kgdb_handle_exception, and copying it back afterwards. But actually we don't do this properly. We should backup current_thread_info then restore that when exit. Signed-off-by: Tiejun Chen <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc/kgdb: Bail out of KGDB when we've been triggeredTiejun Chen1-0/+15
We need to skip a breakpoint exception when it occurs after a breakpoint has already been removed. Signed-off-by: Tiejun Chen <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc/kgdb: Do not set kgdb_single_step on ppcTiejun Chen1-1/+0
The kgdb_single_step flag has the possibility to indefinitely hang the system on an SMP system. The x86 arch have the same problem, and that problem was fixed by commit 8097551d9ab9b9e3630(kgdb,x86: do not set kgdb_single_step on x86). This patch does the same behaviors as x86's patch. Signed-off-by: Dongdong Deng <[email protected]> Signed-off-by: Jason Wessel <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc/mpic_msgr: Add missing includesScott Wood2-0/+4
Add several #includes that mpic_msgr relies on being pulled implicitly, which only happens on certain configs. Signed-off-by: Scott Wood <[email protected]> Cc: Meador Inge <[email protected]> Cc: Jia Hongtao <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc: Fix null pointer deref in perf hardware breakpointsMichael Neuling1-1/+1
Currently if you are doing a global perf recording with hardware breakpoints (ie perf record -e mem:0xdeadbeef -a), you can oops with: Faulting instruction address: 0xc000000000738890 cpu 0xc: Vector: 300 (Data Access) at [c0000003f76af8d0] pc: c000000000738890: .hw_breakpoint_handler+0xa0/0x1e0 lr: c000000000738830: .hw_breakpoint_handler+0x40/0x1e0 sp: c0000003f76afb50 msr: 8000000000001032 dar: 6f0 dsisr: 42000000 current = 0xc0000003f765ac00 paca = 0xc00000000f262a00 softe: 0 irq_happened: 0x01 pid = 6810, comm = loop-read enter ? for help [c0000003f76afbe0] c00000000073cd04 .notifier_call_chain.isra.0+0x84/0xe0 [c0000003f76afc80] c00000000073cdbc .notify_die+0x3c/0x60 [c0000003f76afd20] c0000000000139f0 .do_dabr+0x40/0xf0 [c0000003f76afe30] c000000000005a9c handle_dabr_fault+0x14/0x48 --- Exception: 300 (Data Access) at 0000000010000480 SP (ff8679e0) is in userspace This is because we don't check to see if the break point is associated with task before we deference the task_struct pointer. This changes the update to use current. Signed-off-by: Michael Neuling <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc: Fixup whitespace in xmonMichael Ellerman1-20/+20
There are a few whitespace goolies in xmon.c, some of them appear to be my fault. Fix them all in one go. Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
2012-08-24powerpc: Fix xmon dl command for new printk implementationMichael Ellerman1-26/+10
Since the printk internals were reworked the xmon 'dl' command which dumps the content of __log_buf has stopped working. It is now a structured buffer, so just dumping it doesn't really work. Use the helpers added for kgdb to print out the content. Signed-off-by: Michael Ellerman <[email protected]> Signed-off-by: Benjamin Herrenschmidt <[email protected]>
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