2100.armlinux.org.uk/
Signed-off-by: Guo Ren
Cc: Christoph Hellwig
Cc: Arnd Bergmann
---
Changelog:
- fixup pfn_valid(pfn) compile error for modules.
- fixup compile warning for CONFIG_DEBUG_HIGHMEM.
- fixup module compile error for EXPORT_SYMBOL(empty_zero_page).
- dma-mapping: fix up dma_map
This patch adds ELF definition and module relocate codes.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/csky/abiv1/inc/abi/elf.h | 26
arch/csky/abiv2/inc/abi/elf.h | 43
arch/csky/include/asm/elf.h | 85 +++
arch/csky
This patch adds string optimize codes and some auxiliary codes.
Signed-off-by: Chen Linfei
Signed-off-by: Mao Han
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
Changelog:
- Use bt instead of jbt in asm, jbt will cause relocation problem.
- remove kernel/platform.c
---
---
arch/csky/abiv1
The patch adds "user access from kernel" codes.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/csky/include/asm/uaccess.h | 416
arch/csky/lib/usercopy.c| 262 +
2 files changed, 678 insertions(+)
create m
This patch adds arch ptrace implementation, stack dump and bug.h.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/csky/include/asm/bug.h | 26 +++
arch/csky/include/uapi/asm/ptrace.h | 104
arch/csky/kernel/dumpstack.c| 66
arch/csky/kernel/ptrace.c
This patch adds boot, ipi, hotplug codes for SMP.
Signed-off-by: Guo Ren
Cc: Marc Zyngier
Cc: Mark Rutland
Cc: Peter Zijlstra
Cc: Arnd Bergmann
---
Changelog:
- Use PER_CPU_DEFINE for ipi_data.
- Remove unused variable and add static for enable_smp_ipi().
- Add comment to explain pass
This patch adds csky registers' definition, bitops, byteorder,
asm-offsets codes.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/csky/abiv1/inc/abi/reg_ops.h | 27 +++
arch/csky/abiv1/inc/abi/regdef.h | 26 ++
arch/csky/abiv2/inc/abi/reg_ops.h | 17
This patch adds the documentation to describe that how to add cpu nodes in
dts for SMP.
Signed-off-by: Guo Ren
Cc: Rob Herring
---
Changelog:
- Add compatible.
- Remove status part.
---
---
Documentation/devicetree/bindings/csky/cpus.txt | 73 +
1 file changed, 73
Add csky vendor definition.
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt
b/Documentation/devicetree/bindings/vendor
Add a maintainer information for the csky(C-SKY) architecture.
Signed-off-by: Guo Ren
---
MAINTAINERS | 9 +
1 file changed, 9 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index d870cb5..9dac20e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3211,6 +3211,15 @@ T: git git
ow abiv2 gcc ABI for dword access.
abiv1 couldn't support __get_user_dword now.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/csky/include/asm/uaccess.h | 140
1 file changed, 56 insertions(+), 84 deletions(-)
diff --git a/arch/csky/include/asm/uaccess
changelog.
Hope it could be merged into linux-4.20 and I'm very grateful to any help.
Guo Ren (4):
irqchip: add C-SKY SMP interrupt controller
dt-bindings: interrupt-controller: C-SKY SMP intc
irqchip: add C-SKY APB bus interrupt controller
dt-bindings: interrupt-controller: C-SK
The driver is for C-SKY APB bus interrupt controller. It's a simple
interrupt controller which use pending reg to detect the irq and use
enable/disable reg to mask/unmask interrupt sources.
A lot of SOCs based on C-SKY CPU use the interrupt controller as root
controller.
Signed-off-by: Guo Ren
The driver is for C-SKY SMP interrupt controller. It support 16
soft-irqs, 16 private-irqs, and 992 max external-irqs, a total of
1024 interrupts.
C-SKY CPU 807/810/860 SMP/non-SMP could use it.
Signed-off-by: Guo Ren
Cc: Thomas Gleixner
Cc: Marc Zyngier
---
Changelog:
- Remove
- Dt-bindings doc about C-SKY apb bus interrupt controller.
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
.../interrupt-controller/csky,apb-intc.txt | 62 ++
1 file changed, 62 insertions(+)
create mode 100644
Documentation/devicetree/bindings/interrupt
Dt-bindings doc about C-SKY Multi-processors interrupt controller.
Changelog:
- Should be: '#interrupt-cells' not 'interrupt-cells'
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
.../bindings/interrupt-controller/csky,mpintc.txt | 40 ++
1 file changed, 40
On Thu, Sep 20, 2018 at 06:06:19PM +0200, Daniel Lezcano wrote:
> On 20/09/2018 10:03, Guo Ren wrote:
> > Changelog:
> > - Add License and Copyright
> > - Use timer-of framework
> > - Change name with upstream feedback
> > - Use clksource_mmio framewor
On Fri, Sep 21, 2018 at 01:57:27AM +0200, Daniel Lezcano wrote:
> On 21/09/2018 01:31, Guo Ren wrote:
> > On Thu, Sep 20, 2018 at 06:06:19PM +0200, Daniel Lezcano wrote:
> >> On 20/09/2018 10:03, Guo Ren wrote:
> >>> Changelog:
> >>> - Add License and
; >> On Wed, Sep 12, 2018 at 3:25 PM Guo Ren wrote:
> > I don't want to hijack this thread, but in RISC-V land we were hoping to
> > have a
> > user ABI free of 32-bit time_t. Our 32-bit glibc ABI hasn't been finalized
> > yet, and when I talked to the glibc guys a fe
ky: cancel subdirectories
cae2af4 csky: use asm-generic/fcntl.h
Guo Ren (30):
csky: Build infrastructure
csky: defconfig
csky: Kernel booting
csky: Exception handling and mm-fault
csky: System Call
csky: Cache and TLB routines
csky: MMU and page table management
csky: Proc
This patch adds csky defconfig.
Signed-off-by: Guo Ren
---
arch/csky/configs/defconfig | 61 +
1 file changed, 61 insertions(+)
create mode 100644 arch/csky/configs/defconfig
diff --git a/arch/csky/configs/defconfig b/arch/csky/configs/defconfig
new
This patch adds files related to syscall.
Signed-off-by: Guo Ren
---
arch/csky/include/asm/syscall.h | 69 +
arch/csky/include/asm/syscalls.h| 15
arch/csky/include/uapi/asm/unistd.h | 10 ++
arch/csky/kernel/syscall.c | 42
This patch adds exception handling code, cpuinfo and mm-fault code.
Signed-off-by: Guo Ren
---
arch/csky/abiv1/alignment.c | 332 +
arch/csky/abiv1/inc/abi/entry.h | 160
arch/csky/abiv2/inc/abi/entry.h | 157
arch/csky
This patch adds cache and tlb sync codes for abiv1 & abiv2.
Signed-off-by: Guo Ren
---
arch/csky/abiv1/cacheflush.c | 51
arch/csky/abiv1/inc/abi/cacheflush.h | 43 +++
arch/csky/abiv1/inc/abi/tlb.h | 12 ++
arch/csky/abiv2/cacheflush.c |
This patch add boot code. Thx boot params is all in dtb and it's
the only way to let kernel get bootloader param information.
Signed-off-by: Guo Ren
---
arch/csky/kernel/head.S| 78 +
arch/csky/kernel/setup.c | 151
This patch adds Makefile, Kconfig for build infrastructure.
Signed-off-by: Guo Ren
---
arch/csky/Kconfig | 204 +
arch/csky/Kconfig.debug| 8 ++
arch/csky/Makefile | 92 +++
arch/csky/abiv1
This patch adds ELF definition and module relocate codes.
Signed-off-by: Guo Ren
---
arch/csky/include/asm/elf.h | 150
arch/csky/kernel/module.c | 83
2 files changed, 233 insertions(+)
create mode 100644 arch/csky
This patch adds files related to task_switch, sigcontext, signal.
Signed-off-by: Guo Ren
---
arch/csky/abiv2/fpu.c | 281 +
arch/csky/abiv2/inc/abi/fpu.h | 66 ++
arch/csky/include/asm/mmu_context.h | 149 ++
arch/csky
This patch adds string optimize codes and some auxiliary code.
Signed-off-by: Chen Linfei
Signed-off-by: Mao Han
Signed-off-by: Guo Ren
---
arch/csky/abiv1/bswapdi.c| 19 +++
arch/csky/abiv1/bswapsi.c| 15 ++
arch/csky/abiv1/inc/abi/string.h | 13 ++
arch/csky/abiv1
This patch adds atomic, cmpxchg, spinlock files.
- SMP supported
- ticklock supported
- queue-rwlock supported
Signed-off-by: Guo Ren
---
arch/csky/include/asm/atomic.h | 213 ++
arch/csky/include/asm/cmpxchg.h| 70 +
arch/csky/include/asm
This patch adds IRQ handling files.
Signed-off-by: Guo Ren
---
arch/csky/include/asm/irq.h | 9
arch/csky/include/asm/irqflags.h | 50
arch/csky/kernel/irq.c | 22 ++
3 files changed, 81 insertions(+)
create mode
This patch adds "user access from kernel" codes.
Signed-off-by: Guo Ren
---
arch/csky/include/asm/uaccess.h | 399
arch/csky/lib/usercopy.c| 271 +++
2 files changed, 670 insertions(+)
create mode 100644 arch/cs
This patch adds files related to VDSO and our VDSO only support
rt_sigreturn.
Signed-off-by: Guo Ren
---
arch/csky/abiv1/inc/abi/vdso.h | 18 +
arch/csky/abiv2/inc/abi/vdso.h | 24
arch/csky/include/asm/vdso.h | 13 +++
arch/csky/kernel/vdso.c| 85
(1GB)
- abiv1 CPU (CK610) is VIPT cache and it doesn't support highmem.
- abiv2 CPUs are all PIPT cache and they could support highmem.
Lowmem is directly mapped by msa0 & msa1 reg, and we needn't setup
memory page table for it.
Signed-off-by: Guo Ren
---
arch/csky/abiv1/inc
Add a maintainer information for the csky(C-SKY) architecture.
Signed-off-by: Guo Ren
---
MAINTAINERS | 16
1 file changed, 16 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index d870cb5..6b7c1be 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3211,6 +3211,22 @@ T
This patch adds the documentation to describe that how to add cpu nodes in
dts for SMP.
Signed-off-by: Guo Ren
---
Documentation/devicetree/bindings/csky/cpus.txt | 70 +
1 file changed, 70 insertions(+)
create mode 100644 Documentation/devicetree/bindings/csky/cpus.txt
TO_DEV writeback nonewriteback none
TO_CPU invalidate invalidate* invalidate invalidate*
BIDIR writeback invalidate writeback invalidate
Link: https://lore.kernel.org/lkml/20180518215548.gh17...@n2100.armlinux.org.uk/
Signed-off-by: Guo
irq map, reserve soft_irq & private_irq space
- Add License and Copyright
- Support set_affinity for irq balance in SMP
Signed-off-by: Guo Ren
---
drivers/irqchip/Kconfig | 8 ++
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-csky-mpintc.c |
rq-pending
- remove CSKY_VECIRQ_LEGENCY
- change to generic irq chip framework
- add License and Copyright
- use irq_domain_add_linear instead of leagcy
Signed-off-by: Guo Ren
---
drivers/irqchip/Kconfig | 8 ++
drivers/irqchip/Makefile| 1 +
drivers/irqchip/irq-c
Specific implementation do not improve the performance, fall
back to asm-generic/bitops/atomic.h.
Signed-off-by: Guo Ren
---
arch/csky/include/asm/bitops.h | 201 -
1 file changed, 201 deletions(-)
diff --git a/arch/csky/include/asm/bitops.h b/arch/csky
.
- Coding convention with upstream feed-back.
Signed-off-by: Guo Ren
---
drivers/clocksource/Kconfig| 8 ++
drivers/clocksource/Makefile | 1 +
drivers/clocksource/csky_mptimer.c | 176 +
include/linux/cpuhotplug.h | 1 +
4 files changed
- Dt-bindings doc about C-SKY Multi-processors interrupt controller.
Signed-off-by: Guo Ren
---
.../bindings/interrupt-controller/csky,mpintc.txt | 40 ++
1 file changed, 40 insertions(+)
create mode 100644
Documentation/devicetree/bindings/interrupt-controller/csky
g return value not
directly use IPI_IRQ. The modification also involves csky_mpintc.
Signed-off-by: Guo Ren
---
arch/csky/include/asm/smp.h | 4 +++-
arch/csky/kernel/smp.c | 27 +++
2 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/arch/csky/inclu
- Dt-bindings doc about C-SKY apb bus interrupt controller.
Signed-off-by: Guo Ren
---
.../interrupt-controller/csky,apb-intc.txt | 62 ++
1 file changed, 62 insertions(+)
create mode 100644
Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt
Add csky vendor definition.
Signed-off-by: Guo Ren
---
Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt
b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 2c3fc51..a728ee3
- Dt-bingdings doc for C-SKY SMP system setting.
Signed-off-by: Guo Ren
---
.../devicetree/bindings/timer/csky,mptimer.txt | 46 ++
1 file changed, 46 insertions(+)
create mode 100644 Documentation/devicetree/bindings/timer/csky,mptimer.txt
diff --git a/Documentation
,
from ./include/linux/rcupdate.h:38,
from ./include/linux/init_task.h:5,
from init/init_task.c:2:
The asm/bitops.h will lose asm/atomic.h for cycle include.
Signed-off-by: Guo Ren
---
arch/csky/include/asm/cmpxchg.h | 7 ---
1 file changed
Changelog:
- Add License and Copyright
- Use timer-of framework
- Change name with upstream feedback
- Use clksource_mmio framework
Signed-off-by: Guo Ren
---
drivers/clocksource/Kconfig | 8 ++
drivers/clocksource/Makefile| 1 +
drivers/clocksource/timer-gx6605s.c | 150
- Dt-bindings doc for gx6605s SOC's system timer.
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
.../bindings/timer/csky,gx6605s-timer.txt | 42 ++
1 file changed, 42 insertions(+)
create mode 100644
Documentation/devicetree/bindings/timer/csky,gx6605s
In flush_cache_range(vma, ...) cache_wbinv_range() couldn't deal with
vma->mm's asid for cache_flush_line. So we use cache_wbinv_all() first
and we'll improve with cache_flush(vma, start, end) in future.
For tlb_start_vma, we make it the same as other arch.
Signed-off-by: Guo Ren
---
arch/c
On Thu, Sep 27, 2018 at 11:43:17AM -0500, Rob Herring wrote:
> On Tue, Sep 25, 2018 at 07:39:21AM +0800, Guo Ren wrote:
> > This patch adds the documentation to describe that how to add cpu nodes in
> > dts for SMP.
> >
> > Signed-off-by: Guo Ren
> > ---
>
On Thu, Sep 27, 2018 at 11:50:44AM -0500, Rob Herring wrote:
> On Tue, Sep 25, 2018 at 07:39:26AM +0800, Guo Ren wrote:
> > - Dt-bindings doc about C-SKY Multi-processors interrupt controller.
> >
> > Signed-off-by: Guo Ren
> > ---
> > .../bindings/interrupt
On Fri, Sep 28, 2018 at 06:32:34AM -0500, Rob Herring wrote:
> On Thu, Sep 27, 2018 at 8:03 PM Guo Ren wrote:
> >
> > On Thu, Sep 27, 2018 at 11:43:17AM -0500, Rob Herring wrote:
> > > On Tue, Sep 25, 2018 at 07:39:21AM +0800, Guo Ren wrote:
> > > > This patc
ed long vaddr;
> > +
> > + if (PageHighMem(page))
> > + vaddr = (unsigned long) kmap_atomic(page);
>
> This isn't going to work as the size might be larger than PAGE_SIZE.
Yes, you are right. I must fix it up. Thank you
Best Regards
Guo Ren
On Thu, Sep 27, 2018 at 08:49:18AM -0700, Christoph Hellwig wrote:
> > --- /dev/null
> > +++ b/arch/csky/include/asm/irq.h
> > @@ -0,0 +1,9 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
> > +
> > +#ifndef __ASM_CSKY_IRQ_H
> > +#define
On Thu, Sep 27, 2018 at 09:50:43PM +0200, Eric W. Biederman wrote:
> Guo Ren writes:
>
> > --- /dev/null
> > +++ b/arch/csky/abiv2/fpu.c
> > +void fpu_fpe(struct pt_regs * regs)
> > +{
> > + int sig;
> > + unsigned int fesr;
> > + si
On Fri, Sep 28, 2018 at 09:21:16AM -0700, Christoph Hellwig wrote:
> On Fri, Sep 28, 2018 at 08:51:17AM +0800, Guo Ren wrote:
> > The arch_sync_dma_for_cpu()/arch_sync_dma_for_device() implementation is
> > broken for some combinations that end up in a BUG() instead of performing
&g
___constant_swab64(u);
>
> > +unsigned int notrace __bswapsi2(unsigned int u)
> > +{
> > + return (((u) & 0xff00) >> 24) |
> > + (((u) & 0x00ff) >> 8) |
> > + (((u) & 0xff00) << 8) |
> > + (((u) & 0x00ff) << 24);
> > +}
>
> Same here.
OK.
#include
unsigned int notrace __bswapsi2(unsigned int u)
{
return ___constant_swab32(u);
}
Thx
Guo Ren
On Thu, Sep 27, 2018 at 08:49:18AM -0700, Christoph Hellwig wrote:
> > --- /dev/null
> > +++ b/arch/csky/include/asm/irq.h
> > @@ -0,0 +1,9 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
> > +
> > +#ifndef __ASM_CSKY_IRQ_H
> > +#define
On Thu, Sep 27, 2018 at 09:50:43PM +0200, Eric W. Biederman wrote:
> Guo Ren writes:
>
> > --- /dev/null
> > +++ b/arch/csky/abiv2/fpu.c
> > +void fpu_fpe(struct pt_regs * regs)
> > +{
> > + int sig;
> > + unsigned int fesr;
> > + si
GE_MASK;
> > + unsigned long vaddr;
> > +
> > + if (PageHighMem(page))
> > + vaddr = (unsigned long) kmap_atomic(page);
>
> This isn't going to work as the size might be larger than PAGE_SIZE.
Ops ... BIG BUG, must be fixed immediately, thank you.
Best Regards
Guo Ren
On Fri, Sep 28, 2018 at 09:16:09AM -0700, Christoph Hellwig wrote:
> > +
> > +static inline void
> > +syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
> > + unsigned int i, unsigned int n, const unsigned long *args)
> > +{
> > + BUG_ON(i + n > 6);
> > +
mp; address <= VMALLOC_END))
> > + {
>
> This doesn't fir the kernel style. Please run checkpatch.pl over
> your code and fix at least all warnings that don't seem clearly bogus.
if (unlikely(address >= VMALLOC_START) &&
unlikely(address <= VMALLOC_END)) {
Ok, use checkpatch.pl.
Best Regards
Guo Ren
zhole_size[ZONE_NORMAL] = PFN_DOWN(memblock_start_of_REG1())
- max_low_pfn;
>
> Please brake lines after 80 characters.
Ok.
>
> > + pr_info("C-SKY: https://github.com/c-sky/csky-linux\n;);
>
> I don't think this belongs into the kernel log.
Ok, remove it.
Best Regards
Guo Ren
On Fri, Sep 28, 2018 at 09:11:10AM -0700, Christoph Hellwig wrote:
> > --- /dev/null
> > +++ b/arch/csky/kernel/Makefile
> > @@ -0,0 +1,8 @@
> > +extra-y := head.o vmlinux.lds
> > +
> > +obj-y += entry.o atomic.o signal.o traps.o irq.o time.o vdso.o \
> > +power.o syscall.o platform.o
On Sat, Sep 29, 2018 at 11:08:41PM +0800, Guo Ren wrote:
> On Fri, Sep 28, 2018 at 09:21:16AM -0700, Christoph Hellwig wrote:
> > On Fri, Sep 28, 2018 at 08:51:17AM +0800, Guo Ren wrote:
> > > The arch_sync_dma_for_cpu()/arch_sync_dma_for_device() implementation is
>
- Dt-bindings doc for gx6605s SOC's system timer.
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
.../bindings/timer/csky,gx6605s-timer.txt | 42 ++
1 file changed, 42 insertions(+)
create mode 100644
Documentation/devicetree/bindings/timer/csky,gx6605s
Dt-bingdings doc for C-SKY SMP system setting.
Changelog:
- Drop the interrupt-parent.
Signed-off-by: Guo Ren
---
.../devicetree/bindings/timer/csky,mptimer.txt | 42 ++
1 file changed, 42 insertions(+)
create mode 100644 Documentation/devicetree/bindings/timer/csky
- Dt-bindings doc about C-SKY apb bus interrupt controller.
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
.../interrupt-controller/csky,apb-intc.txt | 62 ++
1 file changed, 62 insertions(+)
create mode 100644
Documentation/devicetree/bindings/interrupt
Dt-bindings doc about C-SKY Multi-processors interrupt controller.
Changelog:
- Should be: '#interrupt-cells' not 'interrupt-cells'
Signed-off-by: Guo Ren
---
.../bindings/interrupt-controller/csky,mpintc.txt | 40 ++
1 file changed, 40 insertions(+)
create mode 100644
irq map, reserve soft_irq & private_irq space
- Add License and Copyright
- Support set_affinity for irq balance in SMP
Signed-off-by: Guo Ren
---
drivers/irqchip/Kconfig | 8 ++
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-csky-mpintc.c |
Changelog:
- Add License and Copyright
- Use timer-of framework
- Change name with upstream feedback
- Use clksource_mmio framework
Signed-off-by: Guo Ren
---
drivers/clocksource/Kconfig | 8 ++
drivers/clocksource/Makefile| 1 +
drivers/clocksource/timer-gx6605s.c | 150
rq-pending
- remove CSKY_VECIRQ_LEGENCY
- change to generic irq chip framework
- add License and Copyright
- use irq_domain_add_linear instead of leagcy
Signed-off-by: Guo Ren
---
drivers/irqchip/Kconfig | 8 ++
drivers/irqchip/Makefile| 1 +
drivers/irqchip/irq-c
.
- Coding convention with upstream feed-back.
Signed-off-by: Guo Ren
---
drivers/clocksource/Kconfig| 8 ++
drivers/clocksource/Makefile | 1 +
drivers/clocksource/csky_mptimer.c | 176 +
include/linux/cpuhotplug.h | 1 +
4 files changed
On Sun, Sep 30, 2018 at 09:22:30PM +0200, Daniel Lezcano wrote:
> On 30/09/2018 18:18, Guo Ren wrote:
> > This timer is used by SMP system and use mfcr/mtcr instruction
> > to access the regs.
> >
> > Changelog:
> > - Remove #define CPUHP_
Dt-bingdings doc for C-SKY SMP system setting.
Changelog:
- Drop the interrupt-parent.
Signed-off-by: Guo Ren
---
.../devicetree/bindings/timer/csky,mptimer.txt | 42 ++
1 file changed, 42 insertions(+)
create mode 100644 Documentation/devicetree/bindings/timer/csky
rq-pending
- remove CSKY_VECIRQ_LEGENCY
- change to generic irq chip framework
- add License and Copyright
- use irq_domain_add_linear instead of leagcy
Signed-off-by: Guo Ren
---
drivers/irqchip/Kconfig | 8 ++
drivers/irqchip/Makefile| 1 +
drivers/irqchip/irq-c
irq map, reserve soft_irq & private_irq space
- Add License and Copyright
- Support set_affinity for irq balance in SMP
Signed-off-by: Guo Ren
---
drivers/irqchip/Kconfig | 8 ++
drivers/irqchip/Makefile | 1 +
drivers/irqchip/irq-csky-mpintc.c |
- Dt-bindings doc for gx6605s SOC's system timer.
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
.../bindings/timer/csky,gx6605s-timer.txt | 42 ++
1 file changed, 42 insertions(+)
create mode 100644
Documentation/devicetree/bindings/timer/csky,gx6605s
Dt-bindings doc about C-SKY Multi-processors interrupt controller.
Changelog:
- Should be: '#interrupt-cells' not 'interrupt-cells'
Signed-off-by: Guo Ren
---
.../bindings/interrupt-controller/csky,mpintc.txt | 40 ++
1 file changed, 40 insertions(+)
create mode 100644
- Dt-bindings doc about C-SKY apb bus interrupt controller.
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
.../interrupt-controller/csky,apb-intc.txt | 62 ++
1 file changed, 62 insertions(+)
create mode 100644
Documentation/devicetree/bindings/interrupt
big now.
Any feedback is welcome, thx for all people review my patchset.
Best Regards
Guo Ren (8):
irqchip: add C-SKY SMP interrupt controller
dt-bindings: interrupt-controller: C-SKY SMP intc
clocksource: add C-SKY SMP timer
dt-bindings: timer: C-SKY Multi-processor timer
dt-bindings:
.
- Coding convention with upstream feed-back.
Signed-off-by: Guo Ren
---
drivers/clocksource/Kconfig| 8 ++
drivers/clocksource/Makefile | 1 +
drivers/clocksource/csky_mptimer.c | 176 +
include/linux/cpuhotplug.h | 1 +
4 files changed
Changelog:
- Add COMIPLE_TEST in Kconfig
- no cast is needed for "struct clock_event_device *ce = dev"
- remove: extra space after (u64)
- Add License and Copyright
- Use timer-of framework
- Change name with upstream feedback
- Use clksource_mmio framework
Signed-off-b
Re-send when the merge window opens.
Ok.
Best Regards
Guo Ren
etc that need write-combining to get
> acceptable performance
I agree dma_alloc_wc is necessary, and we need add another more attribute
bit in PTE: _PAGE_BUF.
Perhaps using _PAGE_BUF + _PAGE_CACHE are better then _PAGE_CONHENCY.
> - you need to decide what is supposed to happen when there are
> multiple conflicting mappings for the same physical address.
^
What's the mulitple confilcing mappings ?
Best Regards
Guo Ren
Thx Marc,
Sorry for late reply:
On Mon, Feb 18, 2019 at 02:38:23PM +, Marc Zyngier wrote:
> On Mon, 18 Feb 2019 10:04:40 +0800
> guo...@kernel.org wrote:
>
> > From: Guo Ren
> >
> > Support 4 triger types:
> > - IRQ_TYPE_LEVEL_HIGH
> > - IRQ_TYP
Thx Marc,
On Mon, Feb 18, 2019 at 02:28:45PM +, Marc Zyngier wrote:
> On Mon, 18 Feb 2019 10:04:41 +0800
> guo...@kernel.org wrote:
>
> > From: Guo Ren
> >
> > Add trigger type and priority setting for csky,mpintc.
> >
> > Changelog:
> > - c
Thx Marc,
On Fri, May 10, 2019 at 07:12:18PM +0100, Marc Zyngier wrote:
> On Fri, 10 May 2019 09:25:10 +0100,
> Guo Ren wrote:
> >
> > Thx Marc,
> >
> > Sorry for late reply:
> >
> > On Mon, Feb 18, 2019 at 02:38:23PM +, Marc Zyngier wrote
Looks good, nice Job, Maomao
On Thu, Apr 18, 2019 at 02:20:40PM +0800, Mao Han wrote:
> This patch add support for page fault count, major fault count
> and minorfault count. Without this patch page faults are not
> sampled for perf event.
>
> Performance counter stats for
Nice Job, Maomao
Signed-off: Guo Ren
On Mon, Apr 15, 2019 at 05:17:28PM +0800, Mao Han wrote:
> This patch set add perf DWARF unwinding support for C-SKY.
> Including user registers/stack dump API, and libdw support.
>
> CC: Guo Ren
>
> Changes since v4:
> - remove s
> > size_t size,
> > */
> > void __iomem *ioremap(phys_addr_t offset, unsigned long size)
> > {
> > - return __ioremap_caller(offset, size, PAGE_KERNEL,
> > + return __ioremap_caller(offset, size, PAGE_KERNEL_COHERENCY,
> > __builtin_return_address(0));
> > }
> > EXPORT_SYMBOL(ioremap);
>
> I think ioremap is a different story, and should be a separate patch.
Ok
Best Regards
Guo Ren
On Tue, Apr 23, 2019 at 07:55:48AM +0200, Christoph Hellwig wrote:
> On Tue, Apr 23, 2019 at 08:13:48AM +0800, Guo Ren wrote:
> > > We should probably start a working group for this ASAP unless we can
> > > get another working group to help taking care of it.
> >
very different, but
there are only 10 attribute-bits for riscv (In fact we've wasted two bits
to support huge RV32-pfn :P). So I think it is time to merge these two bits
before hardware supports GLOBAL. Reserve them for future!
Best Regards
Guo Ren
LB translation in hardware and shadow page
tables is for stage 2 translation. Shadow page tables care vmid not
asid.
If hardware don't support H-extension (MMU 2-stages translation), it's
hard to accept for virtualization performance.
I don't think hypervisor is a real scene for GLOBAL in PTE.
Are there other scene for GLOBAL in PTE?
Best Regards
Guo Ren
On Mon, Apr 29, 2019 at 01:11:43PM -0700, Palmer Dabbelt wrote:
> On Mon, 22 Apr 2019 08:44:30 PDT (-0700), guo...@kernel.org wrote:
> >From: Guo Ren
> >
> >The current riscv linux implementation requires SOC system to support
> >memory coherence between all I/O dev
); \
> + val;\
> +})
> +
> + dwarf_regs[0] = REG(R0);
> + dwarf_regs[1] = REG(R1);
> + dwarf_regs[2] = REG(R2);
> + dwarf_regs[3] = REG(R3);
> + dwarf_regs[4] = REG(R4);
> + dwarf_regs[5] = REG(R5);
> + dwarf_regs[6] = REG(R6);
> + dwarf_regs[7] = REG(R7);
> + dwarf_regs[8] = REG(R8);
> + dwarf_regs[9] = REG(R9);
> + dwarf_regs[10] = REG(R10);
> + dwarf_regs[11] = REG(R11);
> + dwarf_regs[12] = REG(R12);
> + dwarf_regs[13] = REG(R13);
> + dwarf_regs[14] = REG(SP);
> + dwarf_regs[15] = REG(LR);
> + dwarf_regs[16] = REG(R16);
> + dwarf_regs[17] = REG(R17);
> + dwarf_regs[18] = REG(R18);
> + dwarf_regs[19] = REG(R19);
> + dwarf_regs[20] = REG(R20);
> + dwarf_regs[21] = REG(R21);
> + dwarf_regs[22] = REG(R22);
> + dwarf_regs[23] = REG(R23);
> + dwarf_regs[24] = REG(R24);
> + dwarf_regs[25] = REG(R25);
> + dwarf_regs[26] = REG(R26);
> + dwarf_regs[27] = REG(R27);
> + dwarf_regs[28] = REG(R28);
> + dwarf_regs[29] = REG(R29);
> + dwarf_regs[30] = REG(R30);
> + dwarf_regs[31] = REG(TLS);
> + dwarf_regs[32] = REG(PC);
> + dwfl_thread_state_register_pc(thread, dwarf_regs[32]);
> +
> + return dwfl_thread_state_registers(thread, 0, PERF_REG_CSKY_MAX,
> +dwarf_regs);
> +}
Try LIBUNWIND__ARCH_REG_ID, see:
tools/perf/arch/arm64/util/unwind-libunwind.c
Best Regards
Guo Ren
SATP CSR
> are not implemented on SiFive Unleashed board so we don't see any change
> in performance.
Can you tell me what is the test case ?
Best Regards
Guo Ren
oo.
>
> Yes of course. I mentioned both of these fixes in my reply to Linus.
The BUG is from this commit before upstream:
https://github.com/c-sky/csky-linux/commit/b167422869e6a76b31bda639413efa2ba7e60432#diff-cdc97efef2ab02d6828fa545698f9311
I reference the riscv code without my mind, thx for all.
Best Regards
Guo Ren
Thx Dmitry,
It works for me.
Tested-by: Guo Ren
Acked-by: Guo Ren
On Fri, Mar 29, 2019 at 08:12:30PM +0300, Dmitry V. Levin wrote:
> C-SKY syscall arguments are located in orig_a0,a1,a2,a3,regs[0],regs[1]
> fields of struct pt_regs.
>
> Due to an off-by-one bug and a bu
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