On Sat, Jul 07, 2018 at 10:10:24PM +0200, Andrea Parri wrote:
> On Sat, Jul 07, 2018 at 04:08:47PM +0800, Guo Ren wrote:
> > On Fri, Jul 06, 2018 at 02:17:16PM +0200, Peter Zijlstra wrote:
>
> > CPU0CPU1
> >
> > WRITE_ONCE(x, 1)
K);
> + flush_icache_range(_addr, _addr + len);
> +}
The same as above.
Guo Ren
X-License-Identifier: GPL-2.0
> > +// Copyright (C) 2018 Hangzhou NationalChip Science & Technology Co.,Ltd.
>
> See above
Ok, stick an empty newline
> > + writel_relaxed(expand_byte_to_word(i) + 0x03020100,
>
> This magic number is the reverse of the above magic. Is that intentional.
>
> > + reg_base + INTC_SOURCE + i);
> > + }
>
> See above.
No magic number and use inline func.
> > +static int __init
> > +intc_init(struct device_node *node, struct device_node *parent)
> > +{
> > + u32 clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
> > + int ret;
>
> Aside of that the whole thing might share the code with the other one, but
> it might not be worth it. At least this wants to be documented in the
> changelog why sharing the code is not useful...
Do you mean merge irq-csky-v1.c irq-csky-v2.c irq-nationalchip.c into
one file eg: irq-csky.c?
Guo Ren
t; > + csky_timer_dying_cpu);
>
> Oh no. Just picking a random hotplug event is not how it works. Add your
> own please and make sure it's at the proper place.
like this?
include/linux/cpuhotplug.h:
CPUHP_AP_KVM_ARM_TIMER_STARTING,
+ CPUHP_AP_CSKY_TIMER_STARTING,
/* Must be the last timer callback */
CPUHP_AP_DUMMY_TIMER_STARTING,
> > + struct clock_event_device *ce = (struct clock_event_device *) dev;
>
> Pointless type cast.
Ok.
struct clock_event_device *ce = dev;
> > + .flags = IRQF_TIMER | IRQF_IRQPOLL,
> > + },
>
> See above
Ok, tabular
Guo Ren
On Tue, Jul 03, 2018 at 10:04:57PM +0200, Arnd Bergmann wrote:
> It's better to avoid relying on libgcc here. Please use the
> CONFIG_GENERIC_LIB_ASHLDI3/ASHRDI3/LSHRDI3/etc
> helpers that we already have in the kernel.
Ok, I'll try
Guo Ren
> > +generic-y += auxvec.h
>
> You should not need asm/auxvec.h or uapi/asm/auxvec.h
Ok.
> > +generic-y += bug.h
>
> providing your own bug.h might be helpful too.
> Have a look
Ok.
> > +generic-y += cputime.h
>
> asm-generic/cputime.h no loinger exists
Ok, remove it.
> > +generic-y += kvm_para.h
>
> Do you support KVM?
No, remove it, thx.
> > +generic-y += sizes.h
>
> Deprecated and should not be needed
Ok, remove it.
Guo Ren
map_arg_struct {
> > + unsigned long addr;
> > + unsigned long len;
> > + unsigned long prot;
> > + unsigned long flags;
> > + unsigned long fd;
> > + unsigned long offset;
> > +};
> > +
> > +SYSCALL_DEFINE1(mmap,
> > + struct mmap_arg_struct *, arg)
> > +{
> > + struct mmap_arg_struct a;
> > +
> > + if (copy_from_user(&a, arg, sizeof(a)))
> > + return -EINVAL;
> > +
> > + if (unlikely(a.offset & ~PAGE_MASK))
> > + return -EINVAL;
> > +
> > + return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
> > a.offset >> PAGE_SHIFT);
> > +}
>
> This can be removed since there is mmap2()
Ok.
Guo Ren
On Wed, Jul 04, 2018 at 08:43:29AM +0200, Thomas Gleixner wrote:
> > Do you mean merge irq-csky-v1.c irq-csky-v2.c irq-nationalchip.c into
> > one file eg: irq-csky.c?
>
> Yes, but only if there is enough code to share without creating an ifdef
> mess. But that looks doabl
_IRQPOLL,
> > + },
> > +};
> > +
> > +static u64 notrace nc_sched_clock_read(void)
> > +{
> > + void __iomem *base;
> > +
> > + base = timer_of_base(&to) + CLKSRC_OFFSET;
> > +
> > + return (u64) readl_relaxed(base + TIMER_VALUE);
> > +}
> > +
> > +static void nc_timer_set_div(void __iomem *base)
> > +{
> > + unsigned int div;
> > +
> > + div = timer_of_rate(&to)/TIMER_FREQ - 1;
>
> space ' / '
>
> Is it
> (timer_of_rate(&to) / TIMER_FREQ) - 1
> or
> timer_of_rate(&to) / (TIMER_FREQ - 1)
>
> ?
Thx, I'll modify it like this:
div = (timer_of_rate(&to) / TIMER_FREQ) - 1;
> > + clocksource_mmio_init(base + TIMER_VALUE, "nationalchip", TIMER_FREQ,
> > 200, 32,
> > + clocksource_mmio_readl_up);
>
> return code check ?
Ok, add return code check.
> > +TIMER_OF_DECLARE(nc_timer, "nationalchip,timer-v1", nc_timer_init);
>
> same comment than cksy timer.
Ok.
Guo Ren
On Wed, Jul 04, 2018 at 04:35:43PM +0200, Thomas Gleixner wrote:
> On Wed, 4 Jul 2018, Guo Ren wrote:
> > On Tue, Jul 03, 2018 at 11:39:05AM +0200, Thomas Gleixner wrote:
> > > > +static inline u64 get_ccvr(void)
> > > > +{
> > > > +
kernel/syscall_table.c:
>
> #define sys_fadvise64_64 csky_fadvise64_64
Thx for the tip :)
Guo Ren
ic ops is set.
Got it, add set_oneshot.
> > Thx, I'll modify it like this:
> > div = (timer_of_rate(&to) / TIMER_FREQ) - 1;
>
> I wanted to be sure it wasn't the latter. In this case, you don't need
> parenthesis, so just add the spaces around the '/' operator.
Ok
Guo Ren
On Thu, Jul 05, 2018 at 08:05:03PM +0200, Peter Zijlstra wrote:
> On Mon, Jul 02, 2018 at 01:30:19AM +0800, Guo Ren wrote:
> > +static irqreturn_t handle_ipi(int irq, void *dev)
> > +{
> > + unsigned long *pending_ipis = &ipi_data[smp_processor_id()].bits;
On Thu, Jul 05, 2018 at 07:50:59PM +0200, Peter Zijlstra wrote:
> On Mon, Jul 02, 2018 at 01:30:14AM +0800, Guo Ren wrote:
>
> > +#include
> > +
> > +#defi
tmp = mfcr("cr<29, 0>");
> > + tmp |= 1 << cpu;
> > + mtcr("cr<29, 0>", tmp);
> > +
> > + while (!cpu_online(cpu));
> > +
> > + secondary_stack = 0;
> > +
> > + return 0;
> > +}
>
> I don't see a start address being setup here, so I assume that CPUs branch to
> a
> fixed address out-of-reset. Does that mean that the kernel has to be loaded at
> a particular physical address on a given platform?
No, not a fixed address. I put it arch/csky/kernel/traps.c:79-83
trap_init()
#ifdef CONFIG_SMP
mtcr("cr<28, 0>", virt_to_phys(vec_base));
VEC_INIT(VEC_RESET, (void *)virt_to_phys(_start_smp_secondary));
#endi
Guo Ren
On Thu, Jul 05, 2018 at 07:59:02PM +0200, Peter Zijlstra wrote:
> On Mon, Jul 02, 2018 at 01:30:14AM +0800, Guo Ren wrote:
>
> > +static inline void arch_spin_lock(arch_spinlock_t *lock)
> > +{
> > + unsigned int *p = &lock->lock;
> > + unsigne
On Thu, Jul 05, 2018 at 08:00:08PM +0200, Peter Zijlstra wrote:
> On Mon, Jul 02, 2018 at 01:30:14AM +0800, Guo Ren wrote:
> > +#ifdef CONFIG_CPU_HAS_LDSTEX
> > +ENTRY(csky_cmpxchg)
> > + USPTOKSP
> > + mfcra3, epc
> > + INCTRAP a3
> > +
> >
It's the only SMP bringup mechanism architectual for C-SKY SMP. There is
no another way in future and SOC vendor couldn't change it.
> You probably want to use an enable-method property to describe this.
No, thx.
Guo Ren
On Fri, Jul 06, 2018 at 11:39:32AM +0200, Peter Zijlstra wrote:
> On Fri, Jul 06, 2018 at 02:07:40PM +0800, Guo Ren wrote:
>
> > > Please explain those mb()'s... I'm thinking you meant to use smp_mb().
> > Yes, smp_mb(). Current smp_mb()&mb() is the same: sync
On Fri, Jul 06, 2018 at 02:05:32PM +0200, Peter Zijlstra wrote:
> On Fri, Jul 06, 2018 at 07:48:12PM +0800, Guo Ren wrote:
> > On Thu, Jul 05, 2018 at 08:00:08PM +0200, Peter Zijlstra wrote:
> > > On Mon, Jul 02, 2018 at 01:30:14AM +0800, Guo Ren wrote:
> > > >
next version patch.
>
> If you need inspiration, look at:
>
arch/arm/include/asm/spinlock.h
>
> Or look at the current version of that file and ignore the LSE version.
>
> Note that unlock is a store half-word (u16), not having seen your arch
> manual yet I don't know if you even have that.
Nice tips, thank you very much.
Guo Ren
//gitlab.com/c-sky/buildroot/-/jobs/131973812/artifacts/browse/output/images/
See readme.txt for run.
Best Regards
Guo Ren
Reviewed-by: Guo Ren
On Thu, Dec 13, 2018 at 08:22:00PM +0300, Dmitry V. Levin wrote:
> The uapi/linux/audit.h header is going to use EM_CSKY in order
> to define AUDIT_ARCH_CSKY which is needed to implement
> syscall_get_arch() which in turn is required to extend
> the generic ptr
Thx Dmitry,
Reviewed-by: Guo Ren
On Thu, Dec 13, 2018 at 08:22:07PM +0300, Dmitry V. Levin wrote:
> syscall_get_arch() is required to be implemented on all architectures
> in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO
> request.
>
> Cc: Guo Ren
> Cc
On Fri, Dec 21, 2018 at 05:36:41AM +0300, Dmitry V. Levin wrote:
> Hi,
>
> On Fri, Dec 14, 2018 at 12:44:12PM +0800, Guo Ren wrote:
> > Thx Dmitry,
> >
> > Reviewed-by: Guo Ren
>
> Given that the whole series is going to be pinged for quite some
> time y
On Fri, Dec 21, 2018 at 05:35:52AM +0300, Dmitry V. Levin wrote:
> Hi,
>
> On Fri, Dec 14, 2018 at 12:43:08PM +0800, Guo Ren wrote:
> > Reviewed-by: Guo Ren
>
> Given that the whole series is going to be pinged for quite some
> time yet, would you mind taking this patc
return NULL;
for (i = 0; i < PAGE_SIZE/sizeof(pte_t); i++)
(pte + i)->pte_low = _PAGE_GLOBAL;
return pte;
}
static inline struct page *pte_alloc_one(struct mm_struct *mm)
{
struct page *pte;
pte = alloc_pages(GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_ZERO, 0);
if (!pte)
return NULL;
if (!pgtable_page_ctor(pte)) {
__free_page(pte);
return NULL;
}
return pte;
}
Best Regards
Guo Ren
;
> continue;
> + }
> +
> + of_node_put(node);
If success, of_node_put ?
>
> if (cpu >= NR_CPUS)
Here need a of_node_put()?
> continue;
Can you use for_each_of_cpu_node() for the patch?
Thx
Guo Ren
Hi Marc,
On Mon, Oct 08, 2018 at 05:35:19PM +0100, Marc Zyngier wrote:
> Hi Guo,
>
> On 04/10/18 18:22, Guo Ren wrote:
> > - Irq-csky-mpintc is C-SKY smp system interrupt controller and it
> >could support 16 soft irqs, 16 private irqs, and 992 max common
> >
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 ++
CPUHP_AP_CSKY_TIMER_STARTING.
- Add CPUHP_AP_CSKY_TIMER_STARTING in cpuhotplug.h.
- Support csky mp timer alpha version.
- Just use low-counter with 32bit width as clocksource.
- Coding convention with upstream feed-back.
Signed-off-by: Guo Ren
Cc: Daniel Lezcano
---
drivers/clocksource/Kconfig
k
- add INTC_IFR to clear irq-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
Cc: Mark Rutland
---
drivers/irqchip/Kconfig | 8 ++
drivers/irqchip/Makef
Dt-bingdings doc for C-SKY SMP system setting.
Changelog:
- Drop the interrupt-parent.
Signed-off-by: Guo Ren
Reviewed-by: Rob Herring
---
.../devicetree/bindings/timer/csky,mptimer.txt | 42 ++
1 file changed, 42 insertions(+)
create mode 100644 Documentation
et.
- Add COMPILE_TEST for csky_mp_timer.
- Fixup smp boot error, cpuhp_setup_state must after timer_of_init()
for csky_mp_timer.
Any feedback is welcome, thx for all people review my patchset.
Guo Ren (8):
irqchip: add C-SKY SMP interrupt controller
dt-bindings: interrupt-controller: C-SK
ckpatch.pl
- Move IPI_IRQ into the driver
- Remove irq_set_default_host() and use set_ipi_irq_mapping()
- Change name with upstream feed-back
- Change irq map, reserve soft_irq & private_irq space
- Add License and Copyright
- Support set_affinity for irq balance in SMP
Signed-off-by: Guo
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,gx
Signed-off-by: Guo Ren
Cc: Daniel Lezcano
---
drivers/clocksource/Kconfig | 8 ++
drivers/clocksource/Makefile| 1 +
drivers/clocksource/timer-gx6605s.c | 154
3 files changed, 163 insertions(+)
create mode 100644 drivers/clocksource/timer
- 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
a result of create_mapping by
arch_ipi_irq_mapping()
callback in irq-csky-mpintc.c
void __init setup_smp_ipi(void)
{
int rc;
ipi_irq = arch_ipi_irq_mapping();
if (ipi_irq == 0)
panic("%s IRQ mapping failed\n", __func__);
rc = request_percpu_irq(ipi_irq, handle_ipi, "IPI Interrupt",
&ipi_dummy_dev);
if (rc)
panic("%s IRQ request failed\n", __func__);
enable_smp_ipi();
}
Best Regards
Guo Ren
s, but we will
not give up our mother tongue. RISC-V is a great ISA, and it will
promote other ISAs to be more open.
From ecology, diversity will make Linux more robust.
We will continue to improve csky subsystem, and now is only the
beginning.
Best Regards
Guo Ren
gards
Guo Ren
On Mon, Oct 15, 2018 at 01:07:41PM +0800, Guo Ren wrote:
> The driver is for C-SKY SMP timer. It only support oneshot event
> and 32bit overflow for clocksource. Per cpu core has one timer and
> all timers share one clock-counter-input the same clocksource.
>
>
On Mon, Oct 29, 2018 at 11:54:26AM -0500, Rob Herring wrote:
> On Fri, Oct 26, 2018 at 11:09 PM Guo Ren wrote:
> >
> > The following changes since commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d:
> >
> > Linux 4.19 (2018-10-22 07:37:37 +0100)
> >
> >
up patches for linux-4.20-rc1
These patches are complementary to "C-SKY(csky) Port for Linux 4.20" and
fixup dtb Kbuild to follow the new Devicetree dtb build rules.
Link:
https://lore.kernel.org/lkml/cabggisxiwaqn9qdqpfxewcckkgjfmzfvspgvuhqk7ob404-...@mail.gmail.com/
Si
nistd.h
f1454fe csky: cleanup unistd.h
5d2985f csky: cleanup Kconfig and Makefile.
423d97e csky: cancel subdirectories
cae2af4 csky: use asm-generic/fcntl.h
Guo Ren (21):
csky: Build infrastructure
csky: defconfig
csky: Kernel booting
csky: Exception handling and mm-fault
csky: System Call
c
This patch adds csky defconfig.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
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
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
Cc: Arnd Bergmann
---
Changelog:
- Use built-in dtb when dtb param is NULL.
- Add dummy console for allmodconfig.
---
---
arch/csky/k
This patch adds Makefile, Kconfig for build infrastructure.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
Changelog:
- make allmodconfig is OK.
- Use BUILTIN_DTB as string, remove bool define for compile.
- Add xor.h in asm/Kbuild
- Add compat.h in asm/Kbuild.
- Add select DMA_DIRECT_OPS in
This patch adds exception handling code, cpuinfo and mm-fault code.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
Changelog:
- Fixup r15 may used by unalignment access and remove r1.
---
---
arch/csky/abiv1/alignment.c | 326 +
arch/csky/abiv1/inc/abi
This patch adds atomic, cmpxchg, spinlock files.
Signed-off-by: Guo Ren
Cc: Peter Zijlstra
Cc: Andrea Parri
Cc: Arnd Bergmann
---
Changlog:
- SMP supported
- ticklock supported
- queue-rwlock supported
---
---
arch/csky/include/asm/atomic.h | 212 +
arch
This patch adds cache and tlb sync codes for abiv1 & abiv2.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
Changelog:
- fixup module compile error for EXPORT_SYMBOL(cache_wbinv_range).
- tlb.h & cacheflush.h:
fix flush_cache_range and tlb_start_vma of abiv1 in
flush_cache_r
This patch adds files related to syscall.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/csky/include/asm/syscall.h | 71 +
arch/csky/include/asm/syscalls.h| 15
arch/csky/include/uapi/asm/unistd.h | 10 ++
arch/csky/kernel/syscall.c
This patch adds files related to VDSO and our VDSO only support
rt_sigreturn.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
arch/csky/abiv1/inc/abi/vdso.h | 17 +
arch/csky/abiv2/inc/abi/vdso.h | 23 +++
arch/csky/include/asm/vdso.h | 12 ++
arch/csky/kernel/vdso.c
This patch adds IRQ handling files.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
Cc: Thomas Gleixner
---
Changelog:
- Use CONFIG_GENERIC_IRQ_MULTI_HANDLER
---
---
arch/csky/include/asm/irqflags.h | 49
arch/csky/kernel/irq.c | 22
This patch adds files related to task_switch, sigcontext, signal,
fpu context switch.
Signed-off-by: Guo Ren
Cc: Arnd Bergmann
---
Changelog:
- abiv2/fpu.c: Userspace should never be sent NSIGXXX as a si_code.
Use FPE_FLTUNK instead.
- abiv2/fpu.c: Use force_sig_fault instead
.gh17...@n2100.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
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
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
follow 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/a
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:
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: Gu
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 ++
Hi Marc,
On Tue, Oct 16, 2018 at 03:41:05PM +0100, Marc Zyngier wrote:
> Guo,
>
> On 16/10/18 15:08, Guo Ren wrote:
> > This is about 13th patchset for C-SKY linux intc drivers and it should pair
> > with 9th kernel patchset. Timer drivers are seperated accordin
Hi Marc,
On Wed, Oct 17, 2018 at 09:29:45AM +0100, Marc Zyngier wrote:
> Hi Guo,
>
> On 17/10/18 02:55, Guo Ren wrote:
> > Hi Marc,
> >
> > On Tue, Oct 16, 2018 at 03:41:05PM +0100, Marc Zyngier wrote:
> >> Guo,
> >>
> >> On 16/10/18 15:08,
On Wed, Oct 17, 2018 at 05:02:33PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:01 AM Guo Ren wrote:
> >
> > This patch adds files related to syscall.
> >
> > Signed-off-by: Guo Ren
> > Cc: Arnd Bergmann
>
> Reviewed-by: Arnd Bergmann
>
On Wed, Oct 17, 2018 at 05:06:56PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:01 AM Guo Ren wrote:
> >
> > This patch adds files related to memory management and here is our
> > memory-layout:
> >
> >Fixmap : 0xffc02000 – 0xf000
On Wed, Oct 17, 2018 at 05:11:00PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:01 AM Guo Ren wrote:
> >
> > This patch adds files related to task_switch, sigcontext, signal,
> > fpu context switch.
> >
> > Signed-off-by: Guo Ren
> > C
On Wed, Oct 17, 2018 at 05:14:48PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:02 AM Guo Ren wrote:
> >
> > This patch adds IRQ handling files.
> >
> > Signed-off-by: Guo Ren
> > Cc: Arnd Bergmann
> > Cc: Thomas Glei
On Wed, Oct 17, 2018 at 05:17:05PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:02 AM Guo Ren wrote:
> >
> > This patch adds atomic, cmpxchg, spinlock files.
> >
> > Signed-off-by: Guo Ren
> > Cc: Peter Zijlstra
> > Cc: Andrea Parri
> >
On Wed, Oct 17, 2018 at 05:18:49PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:02 AM Guo Ren wrote:
> >
> > This patch adds ELF definition and module relocate codes.
> >
> > Signed-off-by: Guo Ren
> > Cc: Arnd Bergmann
>
> >
On Wed, Oct 17, 2018 at 05:24:36PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:02 AM Guo Ren wrote:
>
> > +++ b/arch/csky/lib/delay.c
> > @@ -0,0 +1,39 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +// Copyright (C) 2018 Hangzhou C-SKY Micro
On Wed, Oct 17, 2018 at 05:46:56PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:06 AM Guo Ren wrote:
> >
> > This patch adds arch ptrace implementation, stack dump and bug.h.
> >
> > Signed-off-by: Guo Ren
> > Cc: Arnd Bergmann
>
> Reviewed
On Wed, Oct 17, 2018 at 05:50:33PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:30 AM 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
> > Cc: Rob H
On Wed, Oct 17, 2018 at 05:44:17PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 5:33 AM Guo Ren wrote:
> >
> > Support dword access for get_user_size and redesign put_user_size with
> > the same style of get_user_size. It's Ok to use xxx_user_asm_common for
>
On Thu, Oct 18, 2018 at 11:21:30AM +0800, Guo Ren wrote:
> On Wed, Oct 17, 2018 at 05:50:33PM +0200, Arnd Bergmann wrote:
> > On Tue, Oct 16, 2018 at 5:30 AM Guo Ren wrote:
> > >
> > > This patch adds the documentation to describe that how to add cpu nodes in
> >
On Wed, Oct 17, 2018 at 05:58:46PM +0200, Arnd Bergmann wrote:
> On Tue, Oct 16, 2018 at 4:58 AM Guo Ren wrote:
> >
> > This is the 9th version patchset to add the Linux kernel port for
> > C-SKY(csky) based on linux-4.19-rc3.
> >
> > There are only a few cha
There are two intc drivers and two clocksource drivers, also include
related dt-bindings' documentations.
Signed-off-by: Guo Ren
---
MAINTAINERS | 5 +
1 file changed, 5 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index f485597..fb7286a 100644
--- a/MAINTAINERS
+++ b/MAINTA
Hi Marc,
On Tue, Oct 09, 2018 at 04:11:05PM +0100, Marc Zyngier wrote:
> On 09/10/18 15:41, Guo Ren wrote:
> > - Irq-csky-mpintc is C-SKY smp system interrupt controller and it
> >could support 16 soft irqs, 16 private irqs, and 992 max common
> >irqs.
> >
&
Makefile.
Signed-off-by: Guo Ren
---
arch/csky/Kconfig | 205 +
arch/csky/Kconfig.debug| 9 ++
arch/csky/Makefile | 93 +++
arch/csky/abiv1/Makefile | 8 ++
arch/csky/abiv2/Makefile
52ab022 csky: add mfcr() mtcr() in asm/reg_ops.h
bdcd8f3 csky: revert back Kconfig select.
590c7e6 csky: bugfix compile error with CONFIG_AUDIT
1989292 csky: revert some back with cleanup unistd.h
f1454fe csky: cleanup unistd.h
5d2985f csky: cleanup Kconfig and Makefile.
423d97e csky: cancel
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 add boot code. Thx boot params is all in dtb and it's
the only way to let kernel get bootloader param information.
Changelog:
- Use built-in dtb when dtb param is NULL.
- Add dummy console for allmodconfig.
Signed-off-by: Guo Ren
---
arch/csky/kernel/head.S
This patch adds files related to syscall.
Signed-off-by: Guo Ren
---
arch/csky/include/asm/syscall.h | 71 +
arch/csky/include/asm/syscalls.h| 15
arch/csky/include/uapi/asm/unistd.h | 10 ++
arch/csky/kernel/syscall.c | 43
This patch adds exception handling code, cpuinfo and mm-fault code.
Signed-off-by: Guo Ren
---
arch/csky/abiv1/alignment.c | 323
arch/csky/abiv1/inc/abi/entry.h | 160
arch/csky/abiv2/inc/abi/entry.h | 156
arch/csky
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 | 17 +
arch/csky/abiv2/inc/abi/vdso.h | 23 +++
arch/csky/include/asm/vdso.h | 12 ++
arch/csky/kernel/vdso.c| 86
.gh17...@n2100.armlinux.org.uk/
Signed-off-by: Guo Ren
Cc: Christoph Hellwig
---
arch/csky/abiv1/inc/abi/ckmmu.h| 75
arch/csky/abiv1/inc/abi/page.h | 27 +++
arch/csky/abiv1/inc/abi/pgtable-bits.h | 37
arch/csky/abiv1/mmap.c | 66 +++
arch/csky
l with
vma->mm's asid for cache_flush_line and we use cache_wbinv_all() first.
Wwe'll improve with cache_flush(vma, start, end) in future.
For tlb_start_vma, we make it the same as other arch.
- remove the abi/tlb.h
Signed-off-by: Guo Ren
---
arch/csky/abiv1/cacheflush.c
This patch adds atomic, cmpxchg, spinlock files.
Changlog:
- SMP supported
- ticklock supported
- queue-rwlock supported
Signed-off-by: Guo Ren
Cc: Peter Zijlstra
Cc: Andrea Parri
---
arch/csky/include/asm/atomic.h | 212 +
arch/csky/include/asm/cmpxchg.h
This patch adds IRQ handling files.
Changelog:
- Use CONFIG_GENERIC_IRQ_MULTI_HANDLER
Signed-off-by: Guo Ren
Cc: Thomas Gleixner
---
arch/csky/include/asm/irqflags.h | 49
arch/csky/kernel/irq.c | 22 ++
2 files changed, 71
This patch adds files related to task_switch, sigcontext, signal.
Changelog:
- abiv2/fpu.c: Userspace should never be sent NSIGXXX as a si_code.
Use FPE_FLTUNK instead.
- abiv2/fpu.c: Use force_sig_fault instead.
Signed-off-by: Guo Ren
---
arch/csky/abiv2/fpu.c | 275
This patch adds string optimize codes and some auxiliary code.
Changelog:
- Use bt instead of jbt in asm, jbt will cause relocation problem.
- remove kernel/platform.c
Signed-off-by: Chen Linfei
Signed-off-by: Mao Han
Signed-off-by: Guo Ren
---
arch/csky/abiv1/bswapdi.c| 12
This patch adds ELF definition and module relocate codes.
Signed-off-by: Guo Ren
---
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/kernel/module.c
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