- 19 Jan, 2016 20 commits
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Maciej W. Rozycki authored
Add an `ieee754=' kernel parameter to control IEEE Std 754 conformance mode. Use separate flags copied from the respective CPU feature flags, and adjusted according to the conformance mode selected, to make binaries requesting individual NaN encoding modes accepted or rejected as needed. Update the initial setting for FCSR and, in the full FPU emulation mode, its read-only mask accordingly. Accept the mode selection requested for legacy processors as well. As with the EF_MIPS_NAN2008 ELF file header flag adjust both ABS2008 and NAN2008 bits at the same time, to match the choice made for hardware currently implemented. Signed-off-by:
Maciej W. Rozycki <macro@imgtec.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Matthew Fortune <Matthew.Fortune@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11481/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org>
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Maciej W. Rozycki authored
Determine the presence of and the amount of control available over IEEE Std 754-2008 features. In the case of a hardware FPU being used examine the FIR register for the presence of the HAS2008 bit and then the FCSR register for the writability of the ABS2008 and NAN2008 bits and the hardwired state of each of these bits if read-only. Update the initial FCSR contents used for threads and the FCSR writability mask accordingly. For full FPU emulation and MIPS32 or MIPS64 processors make the FCSR ABS2008 and NAN2008 bits writable. Signed-off-by:
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Maciej W. Rozycki authored
Handle the EF_MIPS_NAN2008 ELF file header flag and refuse execution where there is no support in the FPU for the NaN encoding mode requested by a binary invoked. Ensure that the setting of the bit in the binary matches one in any intepreter used. Set the thread's initial FCSR contents according to the value of the EF_MIPS_NAN2008. Set the values of the FCSR ABS2008 and NAN2008 bits both to the same value if possible, to take the approach taken with existing FPU hardware into account. As of now all implementations have both bits hardwired to the same value, that is both are fixed at 0 or both are fixed at 1, even though the architecture allows for implementations where the amount of control implemented with each of these two individual bits is independent of each other. Signed-off-by:
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Maciej W. Rozycki authored
Also pass any interpreter's file header to `arch_check_elf' so that any architecture handler can have a look at it if needed. Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Acked-by:
Al Viro <viro@zeniv.linux.org.uk> Cc: Matthew Fortune <Matthew.Fortune@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11478/Signed-off-by:
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Maciej W. Rozycki authored
Implement IEEE Std 754-2008 NaN encoding wired to the state of the FCSR.NAN2008 bit. Make the interpretation of the quiet bit in NaN data as follows: * in the legacy mode originally defined by the MIPS architecture the value of 1 denotes an sNaN whereas the value of 0 denotes a qNaN, * in the 2008 mode introduced with revision 5 of the MIPS architecture the value of 0 denotes an sNaN whereas the value of 1 denotes a qNaN, following the definition of the preferred NaN encoding introduced with IEEE Std 754-2008. In the 2008 mode, following the requirement of the said standard, quiet an sNaN where needed by setting the quiet bit to 1 and leaving all the NaN payload bits unchanged. Update format conversion operations according to the rules set by IEEE Std 754-2008 and the MIPS architecture. Specifically: * propagate NaN payload bits through conversions between floating-point formats such that as much information as possible is preserved and specifically a conversion from a narrower format to a wider format and then back to the original format does not change a qNaN payload in any way, * conversions from a floating-point to an integer format where the source is a NaN, infinity or a value that would convert to an integer outside the range of the result format produce, under the default exception handling, the respective values defined by the MIPS architecture. In full FPU emulation set the FIR.HAS2008 bit to 1, however do not make any further FCSR bits writable. Signed-off-by:
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Maciej W. Rozycki authored
Implement IEEE Std 754-2008 non-arithmetic ABS.fmt and NEG.fmt emulation wired to the state of the FCSR.ABS2008 bit. In the non-arithmetic mode the sign bit is altered according to the operation requested regardless of the datum encoded in the input operand, no other bits are changed, the resulting bit pattern is written to the output operand and no exception is ever signalled. Signed-off-by:
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Maciej W. Rozycki authored
Allocate CPU option bits and define macros for the legacy-NaN and 2008-NaN IEEE Std 754 MIPS architecture features. Unconditionally mark the legacy-NaN feature as present across hardware and emulated floating-point configurations. Signed-off-by:
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Maciej W. Rozycki authored
Rewrite `arch_elf_pt_proc' and `arch_check_elf' using a union to access the ELF file header. Signed-off-by:
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John Crispin authored
Signed-off-by:
John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11998/Signed-off-by:
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John Crispin authored
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John Crispin authored
The "a" version of the MT7620 has single port PCIE bus. The driver is straightforward without any special magic required. The driver works on MT7620 and MT7628. There are a few magic values that get written to the pcie phy and a register of which we only know the name. I marked these places as vodoo in the comments above the code. Signed-off-by:
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John Crispin authored
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John Crispin authored
Ralink was acquired by Mediatek. Represent this in the cpuinfo. It apparently confused people. Signed-off-by:
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John Crispin authored
Commit 418d29c8 ("MIPS: ralink: Unify SoC id handling") introduced broken code. We obviously need to assign the value. Signed-off-by:
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John Crispin authored
Commit 418d29c8 ("MIPS: ralink: Unify SoC id handling") was not fully correct. The logic for the SoC check got inverted. We need to check if it is not a MT76x8. Signed-off-by:
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John Crispin authored
A few fixes to the pinmux data, 2 new muxes and a minor whitespace cleanup. Signed-off-by:
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John Crispin authored
MT7621 is based on a 1004k core. This patch adds support for the SoC. The timer and IRQ is just boiler plate as GIC has recently been moved to generic places in the kernel and just works. Signed-off-by:
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John Crispin authored
Some of the newer SoCs use the GIC. This patch splits the INTC out into its own symbol, allowing us to add the gic code in the following patch. Signed-off-by:
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John Crispin authored
Add three files. ralink,rt2880-net.txt descibes the actual frame engine and the other two describe the switch forntend bindings. Signed-off-by:
Felix Fietkau <nbd@openwrt.org> Signed-off-by:
Michael Lee <igvtee@gmail.com> Cc: devicetree@vger.kernel.org Cc: David S. Miller <davem@davemloft.net> Cc: netdev@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-mediatek@lists.infradead.org Cc: John Crispin <blogic@openwrt.org> Cc: Felix Fietkau <nbd@nbd.name> Cc: Michael Lee <igvtee@gmail.com> Cc: steven.liu@mediatek.com Cc: Fred.Chang@mediatek.com Patchwork: https://patchwork.linux-mips.org/patch/11970/Signed-off-by:
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Rafał Miłecki authored
BCM47XX platform has specific PCI setup because all buses share the same domain. It's different e.g. on ARM ARCH_BCM_5301X where each PCI bus gets its own domain (they are handled by iProc PCIe controller driver). As we want to make SPROM driver more generic, let's add an exception for BCM47xx. It was tested on BCM4706 (MIPS) and BCM4708A0 (ARM). Signed-off-by:
Rafał Miłecki <zajec5@gmail.com> Cc: Hauke Mehrtens <hauke@hauke-m.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11969/Signed-off-by:
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- 04 Jan, 2016 9 commits
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Alex Smith authored
Add device tree nodes for the NEMC and BCH to the JZ4780 device tree, and make use of them in the Ci20 device tree to add a node for the board's NAND. Note that since the pinctrl driver is not yet upstream, this includes neither pin configuration nor busy/write-protect GPIO pins for the NAND. Use of the NAND relies on the boot loader to have left the pins configured in a usable state, which should be the case when booted from the NAND. [ralf@linux-mips.org: fold in Geert Uytterhoeven's patch and acks from Harvey's latest version.] Signed-off-by:
Alex Smith <alex.smith@imgtec.com> Signed-off-by:
Harvey Hunt <harvey.hunt@imgtec.com> Reviewed-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Alex Smith <alex.smith@imgtec.com> Cc: linux-mtd@lists.infradead.org Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-mtd@lists.infradead.org Patchwork: https://patchwork.linux-mips.org/patch/11695/ Patchwork: https://patchwork.linux-mips.org/patch/11914/ Patchwork: https://patchwork.linux-mips.org/patch/11985/Signed-off-by:
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Simon Arlott authored
The BCM63168 requires the same CPU1 fix as BCM6368. Signed-off-by:
Simon Arlott <simon@fire.lp0.eu> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: linux-mips@linux-mips.org Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org> Patchwork: https://patchwork.linux-mips.org/patch/11487/Signed-off-by:
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Alban Bedel authored
Remove the unused defines for the reference clocks rate and the useless machine init function. Signed-off-by:
Alban Bedel <albeu@free.fr> Cc: Felix Fietkau <nbd@openwrt.org> Cc: Qais Yousef <qais.yousef@imgtec.com> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11505/Signed-off-by:
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Alban Bedel authored
Move the declaration of ath79_ddr_wb_flush() to asm/mach-ath79/ath79.h to allow using it from drivers. This is needed to move the CPU IRQ driver to drivers/irqchip. Signed-off-by:
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Alban Bedel authored
To prepare moving out of the arch directory rework the MISC implementation to use irq domains instead of hard coded IRQ numbers. Also remove the uses of the ath79_reset_base global pointer in the IRQ methods. Signed-off-by:
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Alban Bedel authored
IRQCHIP is always enabled, so the #ifdef can just be removed. Signed-off-by:
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Alban Bedel authored
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Alban Bedel authored
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Alban Bedel authored
Signed-off-by:
Rob Herring <robh@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: devicetree@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11496/Signed-off-by:
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- 03 Jan, 2016 3 commits
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Linus Torvalds authored
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git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds authored
Pull MIPS build fix from Ralf Baechle: "Fix a makefile issue resulting in build breakage with older binutils. This has sat in -next for a few days, testers and buildbot are happy with it, too though if you are going for another -rc that'd certainly help ironing out a few more issues" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: VDSO: Fix build error with binutils 2.24 and earlier
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git://anongit.freedesktop.org/drm-intelLinus Torvalds authored
Pull i915 drm fixes from Jani Nikula: "Two display fixes still for v4.4. The new year's resolution is to start using signed tags per Linus' request. This one is still unsigned; I want to fix this up in our maintainer scripts instead of doing it one-off" * tag 'drm-intel-fixes-2016-01-02' of git://anongit.freedesktop.org/drm-intel: drm/i915: increase the tries for HDMI hotplug live status checking drm/i915: Unbreak check_digital_port_conflicts()
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- 31 Dec, 2015 5 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI bugfix from Bjorn Helgaas: "Here's another fix for v4.4. This fixes 32-bit config reads for the HiSilicon driver. Obviously the driver is completely broken without this fix (apparently it actually was tested internally, but got broken somehow in the process of upstreaming it). Summary: HiSilicon host bridge driver Fix 32-bit config reads (Dongdong Liu)" * tag 'pci-v4.4-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: hisi: Fix hisi_pcie_cfg_read() 32-bit reads -
git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds authored
Pull sparc fixes from David Miller: "Just some missing syscall wire ups" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: Wire up mlock2 system call. sparc: Add all necessary direct socket system calls.
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Prevent XFRM per-cpu counter updates for one namespace from being applied to another namespace. Fix from DanS treetman. 2) Fix RCU de-reference in iwl_mvm_get_key_sta_id(), from Johannes Berg. 3) Remove ethernet header assumption in nft_do_chain_netdev(), from Pablo Neira Ayuso. 4) Fix cpsw PHY ident with multiple slaves and fixed-phy, from Pascal Speck. 5) Fix use after free in sixpack_close and mkiss_close. 6) Fix VXLAN fw assertion on bnx2x, from Yuval Mintz. 7) natsemi doesn't check for DMA mapping errors, from Alexey Khoroshilov. 8) Fix inverted test in ip6addrlbl_get(), from ANdrey Ryabinin. 9) Missing initialization of needed_headroom in geneve tunnel driver, from Paolo Abeni. 10) Fix conntrack template leak in openvswitch, from Joe Stringer. 11) Mission initialization of wq->flags in sock_alloc_inode(), from Nicolai Stange. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (35 commits) sctp: sctp should release assoc when sctp_make_abort_user return NULL in sctp_close net, socket, socket_wq: fix missing initialization of flags drivers: net: cpsw: fix error return code openvswitch: Fix template leak in error cases. sctp: label accepted/peeled off sockets sctp: use GFP_USER for user-controlled kmalloc qlcnic: fix a loop exit condition better net: cdc_ncm: avoid changing RX/TX buffers on MTU changes geneve: initialize needed_headroom ipv6: honor ifindex in case we receive ll addresses in router advertisements addrconf: always initialize sysctl table data ipv6/addrlabel: fix ip6addrlbl_get() switchdev: bridge: Pass ageing time as clock_t instead of jiffies sh_eth: fix 16-bit descriptor field access endianness too veth: don’t modify ip_summed; doing so treats packets with bad checksums as good. net: usb: cdc_ncm: Adding Dell DW5813 LTE AT&T Mobile Broadband Card net: usb: cdc_ncm: Adding Dell DW5812 LTE Verizon Mobile Broadband Card natsemi: add checks for dma mapping errors rhashtable: Kill harmless RCU warning in rhashtable_walk_init openvswitch: correct encoding of set tunnel action attributes ... -
David S. Miller authored
Signed-off-by:David S. Miller <davem@davemloft.net>
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David S. Miller authored
The GLIBC folks would like to eliminate socketcall support eventually, and this makes sense regardless so wire them all up. Signed-off-by:
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- 30 Dec, 2015 3 commits
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Xin Long authored
In sctp_close, sctp_make_abort_user may return NULL because of memory allocation failure. If this happens, it will bypass any state change and never free the assoc. The assoc has no chance to be freed and it will be kept in memory with the state it had even after the socket is closed by sctp_close(). So if sctp_make_abort_user fails to allocate memory, we should abort the asoc via sctp_primitive_ABORT as well. Just like the annotation in sctp_sf_cookie_wait_prm_abort and sctp_sf_do_9_1_prm_abort said, "Even if we can't send the ABORT due to low memory delete the TCB. This is a departure from our typical NOMEM handling". But then the chunk is NULL (low memory) and the SCTP_CMD_REPLY cmd would dereference the chunk pointer, and system crash. So we should add SCTP_CMD_REPLY cmd only when the chunk is not NULL, just like other places where it adds SCTP_CMD_REPLY cmd. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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David S. Miller authored
Merge tag 'wireless-drivers-for-davem-2015-12-28' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers Kalle Valo says: ==================== iwlwifi * don't load firmware that won't exist for 7260 * fix RCU splat ==================== Signed-off-by:
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Nicolai Stange authored
Commit ceb5d58b ("net: fix sock_wake_async() rcu protection") from the current 4.4 release cycle introduced a new flags member in struct socket_wq and moved SOCKWQ_ASYNC_NOSPACE and SOCKWQ_ASYNC_WAITDATA from struct socket's flags member into that new place. Unfortunately, the new flags field is never initialized properly, at least not for the struct socket_wq instance created in sock_alloc_inode(). One particular issue I encountered because of this is that my GNU Emacs failed to draw anything on my desktop -- i.e. what I got is a transparent window, including the title bar. Bisection lead to the commit mentioned above and further investigation by means of strace told me that Emacs is indeed speaking to my Xorg through an O_ASYNC AF_UNIX socket. This is reproducible 100% of times and the fact that properly initializing the struct socket_wq ->flags fixes the issue leads me to the conclusion that somehow SOCKWQ_ASYNC_WAITDATA got set in the uninitialized ->flags, preventing my Emacs from receiving any SIGIO's due to data becoming available and it got stuck. Make sock_alloc_inode() set the newly created struct socket_wq's ->flags member to zero. Fixes: ceb5d58b ("net: fix sock_wake_async() rcu protection") Signed-off-by:
Nicolai Stange <nicstange@gmail.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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