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2009-04-04sh: Fix up DSP context save/restore.Michael Trimarchi
There were a number of issues with the DSP context save/restore code, mostly left-over relics from when it was introduced on SH3-DSP with little follow-up testing, resulting in things like task_pt_dspregs() referencing incorrect state on the stack. This follows the MIPS convention of tracking the DSP state in the thread_struct and handling the state save/restore in switch_to() and finish_arch_switch() respectively. The regset interface is also updated, which allows us to finally be rid of task_pt_dspregs() and the special cased task_pt_regs(). Signed-off-by: Michael Trimarchi <michael@evidence.eu.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-02sh: Kill off broken direct-mapped cache mode.Paul Mundt
Forcing direct-mapped worked on certain older 2-way set associative parts, but was always error prone on 4-way parts. As these are the norm these days, there is not much point in continuing to support this mode. Most of the folks that used direct-mapped mode generally just wanted writethrough caching in the first place.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-31sh: Tidy up sh7786 pinmux table.Kuninori Morimoto
Formatting and typo fix. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-31sh: Remove buggy definition from SH7786 pinmux_data[]Kuninori Morimoto
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-17sh: Support for extended ASIDs on PTEAEX-capable SH-X3 cores.Paul Mundt
This adds support for extended ASIDs (up to 16-bits) on newer SH-X3 cores that implement the PTAEX register and respective functionality. Presently only the 65nm SH7786 (90nm only supports legacy 8-bit ASIDs). The main change is in how the PTE is written out when loading the entry in to the TLB, as well as in how the TLB entry is selectively flushed. While SH-X2 extended mode splits out the memory-mapped U and I-TLB data arrays for extra bits, extended ASID mode splits out the address arrays. While we don't use the memory-mapped data array access, the address array accesses are necessary for selective TLB flushes, so these are implemented newly and replace the generic SH-4 implementation. With this, TLB flushes in switch_mm() are almost non-existent on newer parts. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-16sh: clkfwk: Safer resume from hibernation.Francesco VIRLINZI
This patch fixes a possible problem in the resume from hibenration. It temporaneally saves the clk->rate on the stack to avoid any possible change during the clk->set_parent(..) call. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-16sh: Consolidate SH-Mobile CPU code in arch/sh/kernel/cpu/shmobile/.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-16sh: SuperH Mobile suspend supportMagnus Damm
This patch contains CONFIG_SUSPEND support to the SuperH architecture. If enabled, SuperH Mobile processors will register their suspend callbacks during boot. To suspend, use "echo mem > /sys/power/state". To allow wakeup, make sure "/sys/device/platform/../power/wakeup" contains "enabled". Additional per-device driver patches are most likely needed. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-16sh: Fix compile error by operands(mov.l) in sh3/entry.SNobuhiro Iwamatsu
-- log -- arch/sh/kernel/cpu/sh4/../sh3/entry.S:365: Error: invalid operands for opcode make[4]: *** [arch/sh/kernel/cpu/sh4/../sh3/entry.o] Error 1 make[3]: *** [arch/sh/kernel/cpu/sh4] Error 2 -- log -- Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-16sh: Add OHCI USB support for SH7786Kuninori Morimoto
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-11sh: clkfwk: Add resume from hibernation support.Francesco VIRLINZI
This patch adds PM support to the clock framework. With this, resume from hibernation is properly supported. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-11sh: clkfwk: add clk_set_parent/clk_get_parentFrancesco VIRLINZI
This patch adds the clk_set_parent/clk_get_parent routines to the sh clock framework. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10sh: hibernation supportMagnus Damm
Add Suspend-to-disk / swsusp / CONFIG_HIBERNATION support to the SuperH architecture. To suspend, use "swapon /dev/sda2; echo disk > /sys/power/state" To resume, pass "resume=/dev/sda2" on the kernel command line. The patch "pm: rework includes, remove arch ifdefs V2" is needed to allow the generic swsusp code to build properly. Hibernation is not enabled with this patch though, a patch setting ARCH_HIBERNATION_POSSIBLE will be submitted later. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7720.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7710.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7705.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh770x.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - mxg.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7619.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7206.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7201.Paul Mundt
Follow the conversions as per the other subtypes. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7263.Paul Mundt
Convert over the SH7263 IRQ groups as well. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7203.Paul Mundt
Follow the conversions as per the other subtypes. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: Restore RTC IRQ setting for SH7763 setup.Nobuhiro Iwamatsu
This was accidentally dropped in the multiple vectors per irq conversion. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06sh: multiple vectors per irq - sh7763Nobuhiro Iwamatsu
Update intc tables and platform data to use one linux irq per maskable interrupt source instead of keeping the one-to-one mapping between vectors and linux irqs. This fixes potential irq masking issues for sh7763 hardware blocks such as RTC/SCIF/DMAC/GETHER/PCIC5/MMCIF/SIM/GPIO/USBF. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-03sh: Add support for SH7786 CPU subtype.Kuninori Morimoto
This adds preliminary support for the SH7786 CPU subtype. While this is a dual-core CPU, only UP is supported for now. L2 cache support is likewise not yet implemented. More information on this particular CPU subtype is available at: http://www.renesas.com/fmwk.jsp?cnt=sh7786_root.jsp&fp=/products/mpumcu/superh_family/sh7780_series/sh7786_group/ Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27sh: Fix up SH-X3 general exception handler build.Paul Mundt
With the recent entry.S refactoring, the SH-X3 path had a mov.l for a register to register copy, resulting in: AS arch/sh/kernel/cpu/sh4/../sh3/entry.o arch/sh/kernel/cpu/sh4/../sh3/entry.S: Assembler messages: arch/sh/kernel/cpu/sh4/../sh3/entry.S:366: Error: invalid operands for opcode make[3]: *** [arch/sh/kernel/cpu/sh4/../sh3/entry.o] Error 1 Switch it over to a mov to fix it up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27sh: multiple vectors per irq - sh7785Magnus Damm
Update intc tables and platform data to use one linux irq per maskable interrupt source instead of keeping the one-to-one mapping between vectors and linux irqs. This fixes potential irq masking issues for sh7785 hardware blocks such as SCIF/DMAC/PCIC5/MMCIF/GDTA/FLCTL/GPIO Signed-off-by: Magnus Damm <damm@igel.co.jp> Tested-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27sh: multiple vectors per irq - sh7780Magnus Damm
Update intc tables and platform data to use one linux irq per maskable interrupt source instead of keeping the one-to-one mapping between vectors and linux irqs. This fixes potential irq masking issues for sh7780 hardware blocks such as SCIF/RTC/DMAC/PCIC5/MMCIF/FLCTL/GPIO Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27sh: multiple vectors per irq - sh7750Magnus Damm
Update intc tables and platform data to use one linux irq per maskable interrupt source instead of keeping the one-to-one mapping between vectors and linux irqs. This fixes potential irq masking issues for sh775x hardware blocks such as SCI/SCIF/RTC/DMAC/TMU2/REF. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27sh: prefetch early exception data on sh4/sh4a.Magnus Damm
Prefetch early exception data. There is unused space in our exception handler cache line anyway, so this is almost free. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27sh: remove EXPEVT vector from stack on sh3/sh4/sh4aMagnus Damm
Remove EXPEVT vector from the stack, lookup_exception_vector() for sh3/sh4/sh4a is already using k2 to get the vector. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27sh: rework register restore code for sh3/sh4/sh4aMagnus Damm
This patch reworks the sh3/sh4/sh4a register restore code in the following ways: - break out restore_regs() from restore_all() - the register saving order is unchanged - use restore_regs() in sh_bios_handler and restore_all - document the function Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27sh: shared register saving code for sh3/sh4/sh4aMagnus Damm
This patch reworks the sh3/sh4/sh4a register saving code in the following ways: - break out prepare_stack_save_dsp() from handle_exception() - break out save_regs() from handle_exception() - the register saving order is unchanged - align new functions to fit in cache lines - separate exception code from interrupt code - keep main code flow in a single cache line per exception vector - use bsr/rts for regular functions (save pr first) - keep data in one shared cache line (exception_data) - document the functions - tie in the hp6xx code Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-12Merge branch 'sh/stable-updates'Paul Mundt
2009-02-12sh: Storage class should be before const qualifierTobias Klauser
The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-29sh: CMT platform data for sh7723/sh7722/sh7366/sh7343Magnus Damm
CMT platform data for SuperH Mobile sh7723/sh7722/sh7343/sh7366. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-29sh: fcnvds fix with denormalized numbers on SH-4 FPU.Carmelo AMOROSO
This fixes a bug in the FPU exception handler for the FCNVDS instruction. To get the register number the instruction is shifted right by 9, though it should be shifted right by 8. More information at ST Linux bugzilla: https://bugzilla.stlinux.com/show_bug.cgi?id=4892 Signed-off-by: Giuseppe Di Giore <giuseppe.di-giore@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-21sh: export the sh7343 JPU to user spaceMagnus Damm
This patch exports the sh7343 JPU to user space using uio_pdrv_genirq, very similar to the sh7722 JPU patch by Hayama-san. While at it fix up the end of the sh7722 JPU iomem resource. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: add UIO support for JPU on SH7722.Takanari Hayama
Add JPU support on Migo-R via UIO. This make use of Magnus's generic UIO platform driver. Chunk of contiguous memory to hold intermediate image and compressed data during encode and decode. Signed-off-by: Takanari Hayama <taki@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: Generic kgdb stub support.Paul Mundt
This migrates from the old bitrotted kgdb stub implementation and moves to the generic stub. In the process support for SH-2/SH-2A is also added, which the old stub never provided. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: Delete unnecessary mov in the interrupt exception entry point.Aoi Shinkai
The INTEVT read at interrupt exception entry is uneccessary, as the read is deferred until we are ready to enter do_IRQ(). The kgdb nmi path still requires it, so move it there. Signed-off-by: Aoi Shinkai <shinkoi2005@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: sh7343 scif configuration updateMagnus Damm
Fix interrupt values for the first sh7343 SCIF port and update the configuration to include the remaining 3 ones. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: propagate r_clkMagnus Damm
Make sure the 32 KHz r_clk rate gets propagated correctly. Without this fix the clocks for RTC, CMT, KEYSC and RWDT are stuck at 0 Hz. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: Add support for SH7201 CPU subtype.Peter Griffin
This patch adds support for the SH-2A FPU based SH7201 processor subtype. Signed-off-by: Peter Griffin <pgriffin@mpc-data.co.uk> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: __udivdi3 -> do_div() in softfloat lib.Paul Mundt
Inhibit the generation of __udivdi3 for the softfloat lib, use do_div() outright. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: Fix clock framework compiler warnings.Paul Mundt
CC arch/sh/kernel/cpu/clock.o arch/sh/kernel/cpu/clock.c: In function 'clk_disable': arch/sh/kernel/cpu/clock.c:156: warning: 'return' with a value, in function returning void Introduced by ("sh: enable and disable clocks recursively"). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: remove old sh_mobile mstpc clocksMagnus Damm
Remove the old sh_mobile mstpcr clocks. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: sh_mobile usb clock framework supportMagnus Damm
Add clock framework support to the usb/r8a66597 driver and adjust the cpu specific code accordingly. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-22sh: sh_mobile usbf clock framework supportMagnus Damm
Add clock framework support to the usbf/m66592 driver and adjust the cpu specific code accordingly. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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