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2009-03-18sh: kexec: Drop SR.BL bit toggling.Paul Mundt
For the time being, this creates far more problems than it solves, evident by the second local_irq_disable(). Kill all of this off and rely on IRQ disabling to protect against the VBR reload. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-18sh: add kexec jump supportMagnus Damm
Add kexec jump support to the SuperH architecture. Similar to the x86 implementation, with the following exceptions: - Instead of separating the assembly code flow into two parts for regular kexec and kexec jump we use a single code path. In the assembly snippet regular kexec is just kexec jump that never comes back. - Instead of using a swap page when moving data between pages the page copy assembly routine has been modified to exchange the data between the pages using registers. - We walk the page list twice in machine_kexec() to do and undo physical to virtual address conversion. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-18sh: rework kexec segment codeMagnus Damm
Rework the kexec code to avoid using P2SEG. Instead we walk the page list in machine_kexec() and convert the addresses from physical to virtual using C. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-18sh: simplify kexec vbr codeMagnus Damm
Setup the vbr register in machine_kexec(). This instead of passing values to the assembly snippet. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-17sh: Flush only the needed range when unmapping a VMA.Paul Mundt
This follows the ARM change from Aaro Koskinen: When unmapping N pages (e.g. shared memory) the amount of TLB flushes done can be (N*PAGE_SIZE/ZAP_BLOCK_SIZE)*N although it should be N at maximum. With PREEMPT kernel ZAP_BLOCK_SIZE is 8 pages, so there is a noticeable performance penalty when unmapping a large VMA and the system is spending its time in flush_tlb_range(). The problem is that tlb_end_vma() is always flushing the full VMA range. The subrange that needs to be flushed can be calculated by tlb_remove_tlb_entry(). This approach was suggested by Hugh Dickins, and is also used by other arches. The speed increase is roughly 3x for 8M mappings and for larger mappings even more. Bits and peices are taken from the ARM patch as well as the existing arch/um implementation that is quite similar. The end result is a significant reduction in both partial and full TLB flushes initiated through flush_tlb_range(). At the same time, the nommu implementation was broken, had a superfluous cache flush, and subsequently would have triggered a BUG_ON() if a code-path had triggered it. Tidy this up for correctness and provide a nopped-out implementation there. More background on the initial discussion can be found at: http://marc.info/?t=123609820900002&r=1&w=2 http://marc.info/?t=123660375800003&r=1&w=2 Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-17sh: Update debugfs ASID dumping for 16-bit ASID support.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-17sh: tlb-pteaex: Kill off legacy PTEA updates.Paul Mundt
While harmless, PTEA has different semantics on these parts, and is only used in extended TLB mode. Kill off the legacy support. 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>
2009-03-17sh: sh7763rdp: Change IRQ number for sh_eth of sh7763rdpNobuhiro Iwamatsu
IRQ for sh_eth of sh7763rdp became multi handling. Therefore, the IRQ number of sh_eth is changed, too. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-17sh: espt-giga board supportNobuhiro Iwamatsu
This adds support for the ESPT-Giga (Ethernet Serial Parallel Translator) SH7763-based reference board. Board support is relatively sparse, presently supporting serial, gigabit ethernet, USB host, and MTD. More information (in Japanese) available at: http://www.cente.jp/product/cente_hard/ESPT-Giga.html Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-17sh: dma: Make G2 DMA configurable.Paul Mundt
Follow the PVR2 DMAC change for G2 DMA. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-17sh: dma: Make PVR2 DMA configurable.Paul Mundt
With arch/sh/drivers/dma/ always being built, the Dreamcast DMA engines are being unconditionally built in, regardless of whether the DMA API is enabled or not. This is a regression from previous behaviour, but there is not much advantage in building them all in unconditionally regardless. Add a new config option to make it optional, and update the only user of it to reflect that. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-16sh: Move IRQ multi definition of DMAC to defconfigNobuhiro Iwamatsu
When SuperH CPU has IRQ multi of DMAC, SH_DMA_IRQ_MULTI becomes enable. The following CPU's are Multi IRQ of DMAC now. - SH775X and SH7091 - SH776X - SH7780 - SH7785 If SH_DMA_IRQ_MULTI becomes enable, dma-sh api driver is optimized for Multi IRQ. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> 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: add ap325 lcd power off supportMagnus Damm
Improve the ap325 board code to allow the lcd panel and backlight to be powered off. Signed-off-by: Magnus Damm <damm@igel.co.jp> 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: Disable get_dma_error_irq for non-SH4 targets.Nobuhiro Iwamatsu
dma-sh's get_dma_error_irq() is only used by SH4, as the SH3 doesn't have the DMA Error interrupt. Disable it out for non-SH4 builds. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-16sh: PMB hibernation supportFrancesco VIRLINZI
This implements preliminary suspend/resume support for the PMB. Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-16sh: Revert CONFIG_NR_ONCHIP_DMA_CHANNELS to MAX_DMA_CHANNELSNobuhiro Iwamatsu
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>
2009-03-16Merge branches 'irq/genirq' and 'linus' into irq/coreIngo Molnar
2009-03-11sh: improve sh7785lcr power off codeMagnus Damm
Improve the sh7785lcr power off implementation to never return. It takes some time before the board is actually powered off, just hang after asking the harware to power down. This removes the serial port garbage printout. Signed-off-by: Magnus Damm <damm@igel.co.jp> 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: dma-sh updates for multi IRQ and new SH-4A CPUs.Nobuhiro Iwamatsu
This adds DMA support for newer SH-4A CPUs, particularly SH7763/64/80/85. This also enables multi IRQ support for platforms that have multiple vectors bound to the same IRQ source. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10sh: Generate uImage by default on Urquell board.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10sh: Define ARCH_SHMOBILE for SH-Mobile CPUs.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10sh: pci-sh7780: fix pci memory address for fixed PMBYoshihiro Shimoda
Fix the problem that cannot work a PCI device when 32-bit physical address mode. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10sh: sh7785lcr: Updates for fixed PMB.Yoshihiro Shimoda
Add a new defconfig for SH7785LCR in 32-bit mode, and update the power off code to avoid 29-bit assumptions. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10sh: Support fixed 32-bit PMB mappings from bootloader.Yoshihiro Shimoda
This provides a method for supporting fixed PMB mappings inherited from the bootloader, as an alternative to the dynamic PMB mapping currently used by the kernel. In the future these methods will be combined. P1/P2 area is handled like a regular 29-bit physical address, and local bus device are assigned P3 area addresses. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10sh: Show sleep state with Migo-R LEDsMagnus Damm
If CONFIG_PM is set, let Migo-R LEDs show sleep states. D11 will show STATUS0 and D12 PDSTATUS. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10Merge branch 'sh/stable-updates'Paul Mundt
2009-03-10sh: Add media/soc_camera.h to board setup of Renesas AP325RXANobuhiro Iwamatsu
Other compilation errors were revised by commit of "sh: ap325rxa: Revert ov772x support" (08c2f5b4d76f83213e379b12df504269d21c9e7c) but other compilation errors are given. We revert this commit and need to add new header(media/soc_camera.h). This change revises new compilation error. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-10Merge branch 'master' of ↵Paul Mundt
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
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>
2009-03-05sh: Set a sensible default for the SH7786 pclk.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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