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* MIPS: Lantiq: Add SoC detection for ar10 and grx390Hauke Mehrtens2015-11-112-2/+38
| | | | | | | | | Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11390/ Patchwork: https://patchwork.linux-mips.org/patch/11399/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Add support for gphy firmware loading for ar10 and grx390Hauke Mehrtens2015-11-111-20/+92
| | | | | | | | | Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11389/ Patchwork: https://patchwork.linux-mips.org/patch/11398/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Add pmu bits for ar10 and grx390Hauke Mehrtens2015-11-111-1/+56
| | | | | | | | Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11388/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Add PMU bits for USB and SDIO devicesHauke Mehrtens2015-11-111-1/+23
| | | | | | | | | | This adds the PUM bits for USB and SDIO devices Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11387/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Deactivate most of the devices by defaultHauke Mehrtens2015-11-111-21/+28
| | | | | | | | | | | | | When the SoC starts up most of the devices should be deactivated by the PMU, they should be activated when they get used by their drivers. Some devices should not get deactivate at startup like the serial, register them in a special way. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11386/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Add clock detection for grx390 and ar10Hauke Mehrtens2015-11-112-1/+167
| | | | | | | | | | This add detection of some clocks on the ar10 and grx390. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11385/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Fix pp32 clock on vr9Hauke Mehrtens2015-11-112-3/+8
| | | | | | | | | | The vendor code uses different clock values for this clock. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11384/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Rename CGU_SYS_VR9 registerHauke Mehrtens2015-11-111-4/+5
| | | | | | | | | | | This register is also used on other SoCs. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11383/ Patchwork: https://patchwork.linux-mips.org/patch/11397/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Add support for setting PMU register on AR10 and GRX390Hauke Mehrtens2015-11-111-11/+73
| | | | | | | | | | This adds support for setting the PMU register on the AR10 and GRX390. Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11382/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Lantiq: Add locking for PMU register and check status afterwardsHauke Mehrtens2015-11-111-5/+27
| | | | | | | | | | | | | | | | | The PMU register are accessed in a non atomic way and they could be accessed by different threads simultaneously, which could cause problems this patch adds locking around the PMU registers. In addition we now also wait till the PMU is actually deactivated. [ralf@linux-mips.org: Fix spelling mistake in commit message as noticed by Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>.] Signed-off-by: Hauke Mehrtens <hauke.mehrtens@lantiq.com> Acked-by: John Crispin <blogic@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11381/ Patchwork: https://patchwork.linux-mips.org/patch/11396/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM47xx: Fetch board info directly in callback functionRafał Miłecki2015-11-113-19/+18
| | | | | | | | | | | | | This drops another symbol dependency between setup.c and sprom.c which will allow us to make SPROM code a separated module (and share it with ARM). Patch tested on Linksys WRT300N V1. 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/11360/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM47xx: Fix some WARNINGs pointed in sprom.c by checkpatch.plRafał Miłecki2015-11-111-9/+16
| | | | | | | | | | | | There are still few left: 1) Most of them about lines over 80 chars (increased readability exception) 2) Wrong parsing of preprocessor macros Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Cc: linux-mips@linux-mips.org Cc: Hauke Mehrtens <hauke@hauke-m.de> Patchwork: https://patchwork.linux-mips.org/patch/11356/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: BCM47xx: Support on-SoC bus in SPROM reading functionRafał Miłecki2015-11-111-2/+6
| | | | | | | | | | | | | To support (extract) SPROM on Broadcom ARM devices we should separate SPROM code and make it a separated module. We won't want to export bcm47xx_fill_sprom symbol so we should support SoC SPROM in the standard fallback function and then modify ssb to use it. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Acked-by: Hauke Mehrtens <hauke@hauke-m.de> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11355/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: lantiq: add clk_round_rate()Hauke Mehrtens2015-11-111-0/+17
| | | | | | | | | | | | | | | This adds a basic implementation of clk_round_rate() The clk_round_rate() function is called by multiple drivers and subsystems now and the lantiq clk driver is supposed to export this, but doesn't do so, this causes linking problems like this one: ERROR: "clk_round_rate" [drivers/media/v4l2-core/videodev.ko] undefined! Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: John Crispin <blogic@openwrt.org> Cc: <stable@vger.kernel.org> # 4.1+ Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11358/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Add LATENCYTOP supportAaro Koskinen2015-11-112-12/+19
| | | | | | | | | Add LATENCYTOP support for MIPS. Tested on OCTEON. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11353/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: pci-rt3883: drop unneeded of_node_getJulia Lawall2015-11-111-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | for_each_child_of_node performs an of_node_get on each iteration, so no of_node_get is needed on breaking out of the loop when the device_node structure is saved in another variable. A simplified semantic match that finds this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression root; local idexpression child; @@ for_each_child_of_node(root, child) { ... * of_node_get(child) ... break; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Cc: kernel-janitors@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: Russell King - ARM Linux <linux@arm.linux.org.uk> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Jason Cooper <jason@lakedaemon.net> Patchwork: https://patchwork.linux-mips.org/patch/11357/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime()Alex Smith2015-11-118-7/+456
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add user-mode implementations of gettimeofday() and clock_gettime() to the VDSO. This is currently usable with 2 clocksources: the CP0 count register, which is accessible to user-mode via RDHWR on R2 and later cores, or the MIPS Global Interrupt Controller (GIC) timer, which provides a "user-mode visible" section containing a mirror of its counter registers. This section must be mapped into user memory, which is done below the VDSO data page. When a supported clocksource is not in use, the VDSO functions will return -ENOSYS, which causes libc to fall back on the standard syscall path. When support for neither of these clocksources is compiled into the kernel at all, the VDSO still provides clock_gettime(), as the coarse realtime/monotonic clocks can still be implemented. However, gettimeofday() is not provided in this case as nothing can be done without a suitable clocksource. This causes the symbol lookup to fail in libc and it will then always use the standard syscall path. This patch includes a workaround for a bug in QEMU which results in RDHWR on the CP0 count register always returning a constant (incorrect) value. A fix for this has been submitted, and the workaround can be removed after the fix has been in stable releases for a reasonable amount of time. A simple performance test which calls gettimeofday() 1000 times in a loop and calculates the average execution time gives the following results on a Malta + I6400 (running at 20MHz): - Syscall: ~31000 ns - VDSO (GIC): ~15000 ns - VDSO (CP0): ~9500 ns [markos.chandras@imgtec.com: - Minor code re-arrangements in order for mappings to be made in the order they appear to the process' address space. - Move do_{monotonic, realtime} outside of the MIPS_CLOCK_VSYSCALL ifdef - Use gic_get_usm_range so we can do the GIC mapping in the arch/mips/kernel/vdso instead of the GIC irqchip driver] Signed-off-by: Alex Smith <alex.smith@imgtec.com> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11338/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Initial implementation of a VDSOAlex Smith2015-11-1119-124/+1114
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an initial implementation of a proper (i.e. an ELF shared library) VDSO. With this commit it does not export any symbols, it only replaces the current signal return trampoline page. A later commit will add user implementations of gettimeofday()/clock_gettime(). To support both new toolchains and old ones which don't generate ABI flags section, we define its content manually and then use a tool (genvdso) to patch up the section to have the correct name and type. genvdso also extracts symbol offsets ({,rt_}sigreturn) needed by the kernel, and generates a C file containing a "struct mips_vdso_image" containing both the VDSO data and these offsets. This C file is compiled into the kernel. On 64-bit kernels we require a different VDSO for each supported ABI, so we may build up to 3 different VDSOs. The VDSO to use is selected by the mips_abi structure. A kernel/user shared data page is created and mapped below the VDSO image. This is currently empty, but will be used by the user time function implementations which are added later. [markos.chandras@imgtec.com: - Add more comments - Move abi detection in genvdso.h since it's the get_symbol function that needs it. - Add an R6 specific way to calculate the base address of VDSO in order to avoid the branch instruction which affects performance. - Do not patch .gnu.attributes since it's not needed for dynamic linking. - Simplify Makefile a little bit. - checkpatch fixes - Restrict VDSO support for binutils < 2.25 for pre-R6 - Include atomic64.h for O32 variant on MIPS64] Signed-off-by: Alex Smith <alex.smith@imgtec.com> Signed-off-by: Markos Chandras <markos.chandras@imgtec.com> Cc: Matthew Fortune <matthew.fortune@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/11337/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: mpc30x_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts mpc30x_defconfig to use libata PATA drivers. PS This platform still uses "ide0=base[,ctl[,irq]]" hack in its defconfig. The hack itself has been removed in 2008 and this platform should be converted to using PATA platform host driver (pata_platform) instead. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11141/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: maltaup_xpa_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts maltaup_xpa_defconfig to use libata PATA drivers (tc86c001 IDE host driver has no corresponding libata driver yet so it is not converted). Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11140/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: maltaup_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts maltaup_defconfig to use libata PATA drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11142/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: maltasmvp_eva_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts maltasmvp_eva_defconfig to use libata PATA drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11139/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: maltaaprp_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts maltaaprp_defconfig to use libata PATA drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: b.zolnierkie@samsung.com Patchwork: https://patchwork.linux-mips.org/patch/11137/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: malta_qemu_32r6_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts malta_qemu_32r6_defconfig to use libata PATA drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: b.zolnierkie@samsung.com Patchwork: https://patchwork.linux-mips.org/patch/11138/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: malta_kvm_guest_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts malta_kvm_guest_defconfig to use libata PATA drivers (tc86c001 IDE host driver has no corresponding libata driver yet so it is not converted). Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Sanjay Lal <sanjayl@kymasys.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11136/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: malta_kvm_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts malta_kvm_defconfig to use libata PATA drivers (tc86c001 IDE host driver has no corresponding libata driver yet so it is not converted). Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Sanjay Lal <sanjayl@kymasys.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11135/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: malta_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts malta_defconfig to use libata PATA drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11134/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: lemote2f_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts lemote2f_defconfig to use libata PATA drivers. PS This platform uses CS5536 chipset which (due to historical reasons) has basic support in AMD/nVidia PATA host driver and full support in a newer CS5536 PATA one (pata_cs5536). Thus most likely this platform should switch to using the latter host driver. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Huacai Chen <chenhc@lemote.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11133/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: lasat_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts lasat_defconfig to use libata PATA drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Brian Murphy <brian@murphy.dk> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11132/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: fuloong2e_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-9/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts fuloong2e_defconfig to use libata PATA drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11131/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: e55_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts e55_defconfig to use libata PATA drivers. PS This platform still uses "ide0=base[,ctl[,irq]]" hack in its defconfig. The hack itself has been removed in 2008 and this platform should be converted to using PATA platform host driver (pata_platform) instead. Cc: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: capcella_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts capcella_defconfig to use libata PATA drivers. Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11129/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: bigsur_defconfig: Convert to use libata PATA driversBartlomiej Zolnierkiewicz2015-11-111-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | IDE subsystem has been deprecated since 2009 and the majority (if not all) of Linux distributions have switched to use libata for ATA support exclusively. However there are still some users (mostly old or/and embedded non-x86 systems) that have not converted from using IDE subsystem to libata PATA drivers. This doesn't seem to be good thing in the long-term for Linux as while there is less and less PATA systems left in use: * testing efforts are divided between two subsystems * having duplicate drivers for same hardware confuses users This patch converts bigsur_defconfig to use libata PATA drivers (tc86c001 IDE host driver has no corresponding libata driver yet so it is not converted). Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: linux-mips@linux-mips.org Cc: linux-ide@vger.kernel.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11128/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Extend hardware table walking support to MIPS64Paul Burton2015-11-112-3/+8
| | | | | | | | | | | | | | | | | | | Extend the existing support for Hardware Table Walking (HTW) to MIPS64 systems by supporting PMDs & setting the pointer size bit in PWSize, then ceasing to blacklist HTW on MIPS64 systems. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Joshua Kinard <kumba@gentoo.org> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11224/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Malta: Register UP SMP ops if all else failsPaul Burton2015-11-112-0/+2
| | | | | | | | | | | | | | | | | | | | If we fail to register any real SMP implementations, fall back to registering the dummy UP implementation. Otherwise when we build an SMP kernel & run it on a system where the SMP implementations fail to probe (eg. QEMU) the kernel will perform a NULL dereference attempting to call mp_ops->smp_setup() from plat_smp_setup(). Notably this fixes booting kernels with CPS SMP enabled on QEMU, which doesn't currently implement the CM, CPC or GIC. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Peter Hurley <peter@hurleysoftware.com> Cc: Rob Herring <robh@kernel.org> Cc: linux-kernel@vger.kernel.org Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11223/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Malta: Setup RAM regions via DTPaul Burton2015-11-117-93/+204
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move memory configuration to be performed via device tree for the Malta board. This moves more Malta specific code to malta-dtshim.c, leaving the rest of the mti-malta code a little more board-agnostic. This will be useful to share more code between boards, with the device tree providing the board specifics as intended. Since we can't rely upon Malta boards running a bootloader capable of handling devictrees & filling in the required information, a piece of shim code (malta_dt_shim) is added to consume the (e)memsize variables provided as part of the bootloader environment (or on the kernel command line) then generate the DT memory node using the provided values. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: Kumar Gala <galak@codeaurora.org> Cc: linux-kernel@vger.kernel.org Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Rob Herring <robh+dt@kernel.org> Cc: James Hogan <james.hogan@imgtec.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Mark Rutland <mark.rutland@arm.com> Patchwork: https://patchwork.linux-mips.org/patch/11222/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Malta: Remove fw_memblock_t abstractionPaul Burton2015-11-112-80/+29
| | | | | | | | | | | | | | The fw_getmdesc function & fw_memblock_t abstraction is only used by Malta, and so far as I can tell serves no purpose beyond making the code less clear than it could be. Remove the useless level of abstraction. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11221/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Malta: Split obj-y entries across linesPaul Burton2015-11-111-3/+9
| | | | | | | | | | | | Split the obj-y entries to their own lines such that it's easier to see what's going on when adding or removing entries. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/11220/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Allow RIXI for 32-bit kernels on MIPS64Paul Burton2015-11-111-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a68d09a156b2 ("MIPS: Don't use RI/XI with 32-bit kernels on 64-bit CPUs") prevented use of RIXI on MIPS64 systems, stating that the "TLB handlers cannot handle this case". What they actually couldn't handle was cases where there were less fill bits in the Entry{Lo,Hi} registers than bits used by software in PTEs. The handlers can now deal with this case, so enable RIXI for MIPS32 kernels on MIPS64 systems. Note that beyond the obvious benefits provided by having RIXI on such systems, this is required for systems implementing MIPSr6 where RIXI cannot be disabled. This reverts commit a68d09a156b2 ("MIPS: Don't use RI/XI with 32-bit kernels on 64-bit CPUs"). Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Joshua Kinard <kumba@gentoo.org> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11219/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: tlbex: Avoid placing software PTE bits in Entry* PFN fieldsPaul Burton2015-11-111-2/+45
| | | | | | | | | | | | | | | | | | | | | | | | | Commit 748e787eb6de ("MIPS: Optimize TLB refill for RI/XI configurations.") stopped explicitly clearing the bits used by software in PTEs by making use of a rotate instruction that rotates them into the fill bits of the Entry{Lo,Hi} register. This can only work if there are actually enough fill bits in the register to cover the software maintained bits, otherwise we end up writing those bits into the upper bits of the PFN or PFNX field of the Entry{Lo,Hi} register. Fix this by detecting the number of fill bits present in the Entry{Lo,Hi} registers & explicitly clearing the software bits where necessary. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11218/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Tidy EntryLo bit definitions, add PFNPaul Burton2015-11-111-9/+3
| | | | | | | | | | | | | | | | Tidy up the definition of the EntryLo RI & XI bits using BITS_PER_LONG rather than #ifdef'ing on CONFIG_64BIT, and add a definition for the offset to the PFN field for use by a later patch. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11217/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: tlbex: Share MIPS32 32 bit phys & MIPS64 64 bit phys codePaul Burton2015-11-111-11/+3
| | | | | | | | | | | | | | | | | The code in build_update_entries for 64 bit physical addresses on a MIPS64 CPU and 32 bit physical addresses on a MIPS32 CPU is now identical, with the exception of r4k bug workaround in the latter which would simply not apply to the former. Remove the duplication and some Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11216/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: tlbex: Remove some RIXI redundancyPaul Burton2015-11-111-24/+10
| | | | | | | | | | | | | | | | | | | The cpu_has_rixi cases in build_update_entries are now identical to the non-RIXI cases with the one exception of the r45k_bvahwbug case which is hardcoded as never happening anyway & presumably was either missed from the RIXI path or would never happen on a CPU with RIXI support. Remove the redundant checks & duplication. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11215/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: tlbex: Stop open-coding build_convert_pte_to_entryloPaul Burton2015-11-111-8/+8
| | | | | | | | | | | | | | | Make use of build_convert_pte_to_entrylo in the RIXI cases within build_update_entries rather than open-coding it 4 times. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11214/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Always use r4k_wait_irqoff for MIPSr6Paul Burton2015-11-111-1/+10
| | | | | | | | | | | | | | | | | | | | | Prior to release 6 of the MIPS architecture it has been implementation dependent whether masked interrupts cause a wait instruction to return, so the kernel has effectively had to maintain a whitelist of cores upon which it is safe to use the r4k_wait_irqoff cpu_wait implementation. With MIPSr6 this is no longer implementation dependent and r4k_wait_irqoff can always be used. Remove the existing I6400 case which will no longer ever be hit, and was incorrect anyway since I6400 & r6 in general doesn't have the WII bit. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com> Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11210/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: CM, CPC: Ensure core-other GCRs reflect the correct corePaul Burton2015-11-112-0/+12
| | | | | | | | | | | | | | | Ensure the update to which core the core-other GCR regions reflect has taken place before any core-other GCRs are accessed by placing a memory barrier (sync instruction) between the write to the core-other registers and any such GCR accesses. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-kernel@vger.kernel.org Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11209/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: CM: make use of mips_cm_{lock,unlock}_otherPaul Burton2015-11-113-3/+9
| | | | | | | | | | | | | | | | | | | Document that CPC core-other accesses must take place within the bounds of the CM lock, and begin using the CM lock functions where we access the GCRs of other cores. This is required because with CM3 the CPC began using GCR_CL_OTHER instead of CPC_CL_OTHER. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: linux-kernel@vger.kernel.org Cc: Niklas Cassel <niklas.cassel@axis.com> Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11208/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: CM: Introduce core-other locking functionsPaul Burton2015-11-112-0/+71
| | | | | | | | | | | | | | | | | | Introduce mips_cm_lock_other & mips_cm_unlock_other, mirroring the existing CPC equivalents, in order to lock access from the current core to another via the core-other GCR region. This hasn't been required in the past but with CM3 the CPC starts using GCR_CL_OTHER rather than CPC_CL_OTHER and this will be required for safety. [ralf@linux-mips.org: Fix merge conflict.] Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11207/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: CM: Fix GCR_Cx_CONFIG PVPE maskPaul Burton2015-11-111-1/+1
| | | | | | | | | | | | | | The PVPE (or PVP in >= CM3) field is 10 bits wide, but the mask previously only covered the bottom 9 bits. Extend the mask to cover all 10 bits of the field. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: James Hogan <james.hogan@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11206/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: CPS: Warn if a core doesn't startPaul Burton2015-11-111-1/+25
| | | | | | | | | | | | | | | | | | When debugging core bringup it is useful to see the state of the CPC sequencer, so output that value if the core hasn't started within a reasonable amount of time (1 second). This avoids simply appearing to the user to hang if a secondary core fails to start. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: linux-kernel@vger.kernel.org Cc: Niklas Cassel <niklas.cassel@axis.com> Cc: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Patchwork: https://patchwork.linux-mips.org/patch/11205/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-20 12:22:17 +0000