This series of patches add Freescale ASRC module driver support along
with the extra request in imx-sdma structure required by SDMA Device
to Device script.
The previous version has been in the maillist for nearly six months
without any comment and reply. So I decide to drop the SDMA part's
change
SDMA supports device to device (per_2_per) scripts to handle DMA transfering
between two peripheral devices. The per_2_per script, however, needs two dma
requests from two sides while the current structure only defined one request.
So this patch just simply adds the secondary request so as to let
The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of a
signal associated with an input clock into a signal associated with a different
output clock. The driver currently works as a Front End of DPCM with other Back
Ends DAI links such as ESAI<->CS42888 and SSI<->WM8962 and SA
On Fri, Jun 13, 2014 at 06:07:03PM +0800, Nicolin Chen wrote:
> This series of patches have a direct dependency between them. So we might
> need to push them into one branch. And sorry for this :(
>
> Patch-1 adds device to device support in SDMA driver along with a secondary
> request in struct i
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/kvm/book3s_64_vio.c | 35 ++-
1 file changed, 34 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index 516f2ee..48b7ed4 100644
--- a/arch/powerpc/kvm
Additional DMA windows support is coming and accounting will include them
so let's move this code to a helper for reuse.
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_iommu_spapr_tce.c | 54 -
1 file changed, 36 insertions(+), 18 deletions(-)
diff
This fixes IODA1/2 to use it_page_shift as it may be bigger than 4K.
This changes the involved constant values to use "ull" modifier.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: Gavin Shan
---
arch/powerpc/platforms/powernv/pci-ioda.c | 16 +---
1 file changed, 9 insertions(+)
This prepares existing upstream kernel for DDW (Dynamic DMA windows) and
adds actual DDW support for VFIO.
This patchset does not contain any in-kernel acceleration stuff.
This patchset does not enable DDW for emulated devices.
Changes:
v3:
* applied multiple comments from Gavin regarding error
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: Gavin Shan
---
arch/powerpc/kvm/book3s_64_vio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index 54cf9bc..516f2ee 100644
--- a/arch/powerpc/kvm/book3s_64_
Modern IBM POWERPC systems support multiple IOMMU tables per PE
so we need a more reliable way (compared to container_of()) to get
a PE pointer from the iommu_table struct pointer used in IOMMU functions.
At the moment IOMMU group data points to an iommu_table struct. This
introduces a spapr_tce_i
This makes use of iommu_table::it_page_shift instead of TCE_SHIFT and
TCE_RPN_SHIFT hardcoded values.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: Gavin Shan
---
arch/powerpc/platforms/powernv/pci.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platfo
This implements pnv_pci_ioda(1|2)_tce_invalidate as a pnv_ioda_pe callback.
This adds a pnv_iommu_table wrapper around iommu_table and stores a pointer
to PE there. PNV's ppc_md.tce_build() call uses this to find PE and
do the invalidation. This will be used later for Dynamic DMA windows too.
Thi
Since a TCE page size can be other than 4K, make it configurable for
P5IOC2 and IODA PHBs.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: Gavin Shan
---
arch/powerpc/platforms/powernv/pci-ioda.c | 5 +++--
arch/powerpc/platforms/powernv/pci-p5ioc2.c | 3 ++-
arch/powerpc/platforms/powernv/p
This adds missing permission bits to the translated TCE.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/kernel/iommu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 0cda2e8..5af2319 100644
--- a/arch/powerpc/kernel/iommu
At the moment the iommu_table struct has a set_bypass() which enables/
disables DMA bypass on IODA2 PHB. This is exposed to POWERPC IOMMU code
which calls this callback when external IOMMU users such as VFIO are
about to get over a PHB.
Since the set_bypass() is not really an iommu_table function
The tce_build/tce_build_rm callbacks are used to implement H_PUT_TCE/etc
hypercalls. The PAPR spec does not allow to fail if the TCE is not empty.
However we cannot just overwrite the existing TCE value with the new one
as we still have to do page counting.
This adds an optional @old_tces return p
This returns old TCE values to the caller if requested.
The caller is expectded to call put_page() for them.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: Gavin Shan
---
arch/powerpc/platforms/powernv/pci.c | 11 ---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/arch/
This adds missing locks in iommu_take_ownership()/
iommu_release_ownership().
This marks all pages busy in iommu_table::it_map in order to catch
errors if there is an attempt to use this table while ownership over it
is taken.
This only clears TCE content if there is no page marked busy in it_map
SPAPR defines an interface to create additional DMA windows dynamically.
"Dynamically" means that the window is not allocated at the guest start
and the guest can request it later. In practice, existing linux guests
check for the capability and if it is there, they create+map one big DMA
window as
Guests might put new TCEs without clearing them first and the PAPR spec
allows that.
This adds put_page() for TCEs which we just replaced.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/kernel/iommu.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powe
This makes use of the it_page_size from the iommu_table struct
as page size can differ.
This replaces missing IOMMU_PAGE_SHIFT macro in commented debug code
as recently introduced IOMMU_PAGE_XXX macros do not include
IOMMU_PAGE_SHIFT.
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_io
This defines and implements VFIO IOMMU API required to support
Dynamic DMA windows defined in the SPAPR specification. The ioctl handlers
implement host-size part of corresponding RTAS calls:
- VFIO_IOMMU_SPAPR_TCE_QUERY - ibm,query-pe-dma-window;
- VFIO_IOMMU_SPAPR_TCE_CREATE - ibm,create-pe-dma-w
There is a couple of commented debug prints which still use
IOMMU_PAGE_SHIFT() which is not defined for POWERPC anymore, replace
them with it_page_shift.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: Gavin Shan
---
arch/powerpc/kernel/iommu.c | 4 ++--
1 file changed, 2 insertions(+), 2 dele
> -Original Message-
> From: kvm-ppc-ow...@vger.kernel.org [mailto:kvm-ppc-
> ow...@vger.kernel.org] On Behalf Of mihai.cara...@freescale.com
> Sent: Monday, July 21, 2014 4:23 PM
> To: Alexander Graf; Wood Scott-B07421
> Cc: kvm-...@vger.kernel.org; k...@vger.kernel.org; linuxppc-
> d...@l
On 23.07.14 18:06, Mihai Caraman wrote:
Read guest last instruction from kvmppc_get_last_inst() allowing the function
to fail in order to emulate again. On bookehv architecture search for
the physical address and kmap it, instead of using Load External PID (lwepx)
instruction. This fixes an infi
Fix wrong __IO_H definition in boot/io.h
Reported-by: Fernando Silveira
Signed-off-by: Lucas Tanure
---
arch/powerpc/boot/io.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/boot/io.h b/arch/powerpc/boot/io.h
index 7c09f48..394da55 100644
--- a/arch/powerpc/boo
On Thu, Jul 24, 2014 at 04:35:28PM +0800, Nicolin Chen wrote:
> SDMA supports device to device (per_2_per) scripts to handle DMA transfering
> between two peripheral devices. The per_2_per script, however, needs two dma
> requests from two sides while the current structure only defined one request.
On 06/11/2014 03:23 AM, Li Zhong wrote:
> This patch implements vmemmap_list_free() for vmemmap_free().
>
> The freed entries will be removed from vmemmap_list, and form a freed list,
> with next as the header. The next position in the last allocated page is kept
> at the list tail.
>
> When allo
On 06/11/2014 03:23 AM, Li Zhong wrote:
> This is to be called in vmemmap_free(), leave the implementation on BOOK3E
> empty as before.
>
> Signed-off-by: Li Zhong
> Cc: Nathan Fontenot
Acked-by: Nathan Fontenot
> ---
> arch/powerpc/mm/hash_utils_64.c |2 +-
> arch/powerpc/mm/init_64.c
On 06/11/2014 03:23 AM, Li Zhong wrote:
> vmemmap_free() does the opposite of vmemap_populate().
> This patch also puts vmemmap_free() and vmemmap_list_free() into
> CONFIG_MEMMORY_HOTPLUG.
>
> Signed-off-by: Li Zhong
> Cc: Nathan Fontenot
Acked-by: Nathan Fontenot
> ---
> arch/powerpc/mm/i
On 06/11/2014 03:23 AM, Li Zhong wrote:
> vmemmap_populated() checks whether the [start, start + page_size) has valid
> pfn numbers, to know whether a vmemmap mapping has been created that includes
> this range.
>
> Some range before end might not be checked by this loop:
> sec11start..start
On 2014-07-24 at 10:35:29 +0200, Nicolin Chen wrote:
> The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of a
> signal associated with an input clock into a signal associated with a
> different
> output clock. The driver currently works as a Front End of DPCM with other
>
Hi akpm-
One more try before I spam the world with a new thread. Is this patch
okay for -mm?
So far, it's accumulated:
Acked-by: Nathan Lynch
Acked-by: H. Peter Anvin
Acked-by: Benjamin Herrenschmidt [in principle]
Acked-by: Richard Weinberger [for um]
Acked-by: Will Deacon [for arm64]
Fo
The core mm code will provide a default gate area based on
FIXADDR_USER_START and FIXADDR_USER_END if
!defined(__HAVE_ARCH_GATE_AREA) && defined(AT_SYSINFO_EHDR).
This default is only useful for ia64. arm64, ppc, s390, sh, tile,
64-bit UML, and x86_32 have their own code just to disable it. arm,
I'm tracing one LSI interrupt issue on P8 box, and eventually into the
following kernel crash. Not sure if there is one fix against this? :-)
Starting Linux PPC64 #401 SMP Fri Jul 25 10:52:28 EST 2014
-
ppc64_pft_size= 0x0
physic
Hi Tobias,
On Thu, Jul 24, 2014 at 05:20:45PM +0200, Tobias Klauser wrote:
> On 2014-07-24 at 10:35:29 +0200, Nicolin Chen wrote:
> > The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of
> > a
> > signal associated with an input clock into a signal associated with a
> > d
Hello, Scott, Shruti,
There are two types MDIO controllers, each MAC has a corresponding MDIO
controller to access internal PHYs inside Serdes, another is dedicated MDIO
controller to access external PHYs (PHYs on board or riser card, etc). Current
MDIO driver does not distinguish the two contr
This series of patches add Freescale ASRC module driver support along
with the extra request in imx-sdma structure required by SDMA Device
to Device script.
The previous version has been in the maillist for nearly six months
without any comment and reply. So I decide to drop the SDMA part's
change
SDMA supports device to device (per_2_per) scripts to handle DMA transfering
between two peripheral devices. The per_2_per script, however, needs two dma
requests from two sides while the current structure only defined one request.
So this patch just simply adds the secondary request so as to let
The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of a
signal associated with an input clock into a signal associated with a different
output clock. The driver currently works as a Front End of DPCM with other Back
Ends DAI links such as ESAI<->CS42888 and SSI<->WM8962 and SA
On 07/25/2014 09:33 AM, Nicolin Chen wrote:
The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of a
signal associated with an input clock into a signal associated with a different
output clock. The driver currently works as a Front End of DPCM with other Back
Ends DAI links
Hi Varka,
On Fri, Jul 25, 2014 at 09:54:43AM +0530, Varka Bhadram wrote:
> On 07/25/2014 09:33 AM, Nicolin Chen wrote:
> >The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of a
> >signal associated with an input clock into a signal associated with a
> >different
> >output c
Hi Varka,
Regarding a point you suggested.
On Fri, Jul 25, 2014 at 09:54:43AM +0530, Varka Bhadram wrote:
> On 07/25/2014 09:33 AM, Nicolin Chen wrote:
> (...)
>
> >+
> >+static const struct platform_device_id fsl_asrc_devtype[] = {
> >+{
> >+.name = "imx35-asrc",
> >+
Hi Nicolin,
On 07/25/2014 11:24 AM, Nicolin Chen wrote:
Hi Varka,
Regarding a point you suggested.
On Fri, Jul 25, 2014 at 09:54:43AM +0530, Varka Bhadram wrote:
On 07/25/2014 09:33 AM, Nicolin Chen wrote:
(...)
+
+static const struct platform_device_id fsl_asrc_devtype[] = {
+ {
On Fri, Jul 25, 2014 at 11:47:42AM +0530, Varka Bhadram wrote:
> Hi Nicolin,
>
> On 07/25/2014 11:24 AM, Nicolin Chen wrote:
> >Hi Varka,
> >
> >Regarding a point you suggested.
> >
> >On Fri, Jul 25, 2014 at 09:54:43AM +0530, Varka Bhadram wrote:
> >>On 07/25/2014 09:33 AM, Nicolin Chen wrote
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