16 Mar, 2019
1 commit
-
Pull NTB updates from Jon Mason:
- fixes for switchtec debugability and mapping table entries
- NTB transport improvements
- a reworking of the peer_db_addr for better abstraction
* tag 'ntb-5.1' of git://github.com/jonmason/ntb:
NTB: add new parameter to peer_db_addr() db_bit and db_data
NTB: ntb_transport: Ensure the destination buffer is mapped for TX DMA
NTB: ntb_transport: Free MWs in ntb_transport_link_cleanup()
ntb_hw_switchtec: Added support of >=4G memory windows
ntb_hw_switchtec: NT req id mapping table register entry number should be 512
ntb_hw_switchtec: debug print 64bit aligned crosslink BAR Numbers
14 Feb, 2019
1 commit
-
NTB door bell usage depends on NTB hardware.
ex: intel NTB gen1 has one peer door bell register which can be controlled
by the bitmap writen to it, while Intel NTB gen3 has a registers
per door bell and the data trigering the each door bell is always 1.therefore exposing only peer door bell address forcing the user
to be aware of such low level detailsSigned-off-by: Leonid Ravich
Acked-by: Logan Gunthorpe
Acked-by: Dave Jiang
Acked-by: Allen Hubbe
Signed-off-by: Jon Mason
11 Feb, 2019
4 commits
-
Presently, when ntb_transport is used with DMA and the IOMMU turned on,
it fails with errors from the IOMMU such as:DMAR: DRHD: handling fault status reg 202
DMAR: [DMA Write] Request device [00:04.0] fault addr
381fc0340000 [fault reason 05] PTE Write access is not setThis is because ntb_transport does not map the BAR space with the IOMMU.
To fix this, we map the entire MW region for each QP after we assign
the DMA channel. This prevents needing an extra DMA map in the fast
path.Link: https://lore.kernel.org/linux-pci/499934e7-3734-1aee-37dd-b42a5d2a2608@intel.com/
Signed-off-by: Logan Gunthorpe
Reviewed-by: Dave Jiang
Signed-off-by: Jon Mason -
If NTB peer host crashes or reboots, the NTB transport link will be
down and the MWs of NTB transport will be invalid. But the
ntb_transport_link_cleanup() does not free these invalid MWs. When
the NTB peer host is recovered later, NTB transport link will be
up and the ntb_set_mw() will not reset up MWs. Because the MWs of
NTB transport are invalid, the NTB transport will not work.We can fix it by freeing MWs when NTB transport link is down, then
the ntb_set_mw() will reset up MWs when NTB transport link is up.Signed-off-by: Joey Zhang
Reviewed-by: Logan Gunthorpe
Signed-off-by: Jon Mason -
Current Switchtec's BAR setup registers are limited to 32bits,
corresponding to the maximum MW (memory window) size is
Signed-off-by: Paul Selles
Signed-off-by: Wesley Sheng
Reviewed-by: Logan Gunthorpe
Signed-off-by: Jon Mason -
Switchtec NTB crosslink BARs are 64bit addressed but they are printed as
32bit addressed BARs. Fix debug log to increment the BAR numbers by 2 to
reflect the 64bit address alignment.Fixes: 017525018202 ("ntb_hw_switchtec: Add initialization code for crosslink")
Signed-off-by: Paul Selles
Signed-off-by: Wesley Sheng
Reviewed-by: Logan Gunthorpe
Signed-off-by: Jon Mason
28 Jan, 2019
1 commit
-
We need the char-misc fixes in here as well.
Signed-off-by: Greg Kroah-Hartman
22 Jan, 2019
2 commits
-
Clean up the ifdefs which conditionally defined the io{read|write}64
functions in favour of the new common io-64-nonatomic-lo-hi header.Per a nit from Andy Shevchenko, the include list is also made
alphabetical.Signed-off-by: Logan Gunthorpe
Reviewed-by: Andy Shevchenko
Cc: Jon Mason
Signed-off-by: Greg Kroah-Hartman -
Now that ioread64 and iowrite64 are available in io-64-nonatomic,
we can remove the hack at the top of ntb_hw_intel.c and replace it
with an include.Signed-off-by: Logan Gunthorpe
Reviewed-by: Andy Shevchenko
Acked-by: Dave Jiang
Acked-by: Allen Hubbe
Acked-by: Jon Mason
Signed-off-by: Greg Kroah-Hartman
08 Jan, 2019
1 commit
-
We already need to zero out memory for dma_alloc_coherent(), as such
using dma_zalloc_coherent() is superflous. Phase it out.This change was generated with the following Coccinelle SmPL patch:
@ replace_dma_zalloc_coherent @
expression dev, size, data, handle, flags;
@@-dma_zalloc_coherent(dev, size, handle, flags)
+dma_alloc_coherent(dev, size, handle, flags)Suggested-by: Christoph Hellwig
Signed-off-by: Luis Chamberlain
[hch: re-ran the script on the latest tree]
Signed-off-by: Christoph Hellwig
01 Nov, 2018
9 commits
-
Since IDT PCIe-switch temperature sensor is now always available
irregardless of the EEPROM/BIOS settings, Kconfig and in-code
description should be properly altered. In addition lets update
the driver copyright lines.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
IDT PCIe-switch temperature sensor interface is very broken. First
of all only a few combinations of TMPCTL threshold enable bits
really cause the interrupts unmasked. Even if an individual bit
indicates the event unmasked, corresponding IRQ just isn't generated.
Most of the threshold enable bits combinations are in fact useless and
non of them can help to create a fully functional alarm interface.
So to speak, we can't create a well defined hwmon alarms based on
the IDT PCI-switch threshold IRQs.Secondly a single threshold IRQ (not a combination of thresholds) can
be successfully enabled without the issue described above. But in this
case we experienced an enormous number of interrupts generated by
the chip if the temperature got near the enabled threshold value. Filter
adjustment didn't help much. It also doesn't provide a hysteresis settings.
Due to the temperature sample fluctuations near the threshold the
interrupts spate makes the system nearly unusable until the temperature
value finally settled so being pushed either to be fully higher or lower
the threshold.All of these issues makes the temperature sensor alarm interface useless
and even at some point dangerous to be used in the driver. In this case
it is safer to completely discard it and disable the temperature alarm
interrupts.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
IDT PCIe switches provide an embedded temperature sensor working
within [0; 127.5]C with resolution of 0.5C. They also can generate
a PCIe upstream interrupt in case if the temperature passes through
specified thresholds. Since this thresholds interface is very broken
the created hwmon-sysfs interface exposes only the next set of hwmon
nodes: current input temperature, lowest and highest values measured,
history resetting, value offset. HWmon alarm interface isn't provided.IDT PCIe switch also've got an ADC/filter settings of the sensor.
This driver doesn't expose them to the hwmon-sysfs interface at the
moment, except the offset node.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
In order to create a hwmon interface for the IDT PCIe-switch temperature
sensor the already available reader method should be improved. Particularly
we need to redesign it so one would be able to read temperature/offset
values from registers of the passed types. Since IDT sensor interface
provides temperature in unsigned format 0:7:1 (7 bits for real value
and one for fraction) we also need to have helpers for the typical sysfs
temperature data type conversion to and from this format. Even though
the IDT PCIe-switch provided temperature offset got the same but signed
type it can be translated by these methods too.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
Be a little wasteful if the (likely CMA) message window buffer is not
suitably aligned after our first attempt; allocate a buffer twice as big
as we need and manually align our MW buffer within it.This was needed on Intel Broadwell DE platforms with intel_iommu=off
Signed-off-by: Aaron Sierra
Reviewed-by: Dave Jiang
Signed-off-by: Jon Mason -
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.Addresses-Coverity-ID: 1373888 ("Missing break in switch")
Addresses-Coverity-ID: 1373889 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva
Acked-by: Allen Hubbe
Signed-off-by: Jon Mason -
IDT NTB driver sets the upper limit of actual translation address
being written to the corresponding memory window setup. It is achieved
by BARLIMITx register initialization. Needless to say, that the register
works within PCIe bus address space.In general CPU and PCIe address spaces are different. It means,
that addresses used for Memory TLPs routine can be different from
CPU addresses. While in most of cases they are the same, there are
exceptions when the proper mapping must be performed to have the
portable driver code. There used to be a virt_to_bus()/bus_to_virt()
interface for this purpose. But it's deprecated now. It was also a
mistake to use pci_resource_start() since the return address of the
method is at the CPU address space. In order to achieve the desired
purpose we need to use pci_bus_address() helper. This method shall
return a PCIe bus base address of the corresponding BAR resource.Signed-off-by: Serge Semin
Acked-by: Allen Hubbe
Signed-off-by: Jon Mason -
Both devm_kcalloc() and devm_kzalloc() return NULL on error. They
never return error pointers.The use of IS_ERR_OR_NULL is currently applied to the wrong
context.Fix this by replacing IS_ERR_OR_NULL with regular NULL checks.
Fixes: bf2a952d31d2 ("NTB: Add IDT 89HPESxNTx PCIe-switches support")
Signed-off-by: Gustavo A. R. Silva
Signed-off-by: Jon Mason -
ndev_vec_mask() should be returning u64 mask value instead of int.
Otherwise the mask value returned can be incorrect for larger
vectors.Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers")
Signed-off-by: Dave Jiang
Tested-by: Lucas Van
Signed-off-by: Jon Mason
30 Jun, 2018
1 commit
-
Move the Microsemi Switchtec PCI Vendor ID (same as
PCI_VENDOR_ID_PMC_Sierra) to pci_ids.h. Also, replace Microsemi class
constants with the standard PCI definitions.Signed-off-by: Doug Meyer
[bhelgaas: restore SPDX (I assume it was removed by mistake), remove
device ID definitions]
Signed-off-by: Bjorn Helgaas
Reviewed-by: Logan Gunthorpe
13 Jun, 2018
2 commits
-
Pull more overflow updates from Kees Cook:
"The rest of the overflow changes for v4.18-rc1.This includes the explicit overflow fixes from Silvio, further
struct_size() conversions from Matthew, and a bug fix from Dan.But the bulk of it is the treewide conversions to use either the
2-factor argument allocators (e.g. kmalloc(a * b, ...) into
kmalloc_array(a, b, ...) or the array_size() macros (e.g. vmalloc(a *
b) into vmalloc(array_size(a, b)).Coccinelle was fighting me on several fronts, so I've done a bunch of
manual whitespace updates in the patches as well.Summary:
- Error path bug fix for overflow tests (Dan)
- Additional struct_size() conversions (Matthew, Kees)
- Explicitly reported overflow fixes (Silvio, Kees)
- Add missing kvcalloc() function (Kees)
- Treewide conversions of allocators to use either 2-factor argument
variant when available, or array_size() and array3_size() as needed
(Kees)"* tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
treewide: Use array_size in f2fs_kvzalloc()
treewide: Use array_size() in f2fs_kzalloc()
treewide: Use array_size() in f2fs_kmalloc()
treewide: Use array_size() in sock_kmalloc()
treewide: Use array_size() in kvzalloc_node()
treewide: Use array_size() in vzalloc_node()
treewide: Use array_size() in vzalloc()
treewide: Use array_size() in vmalloc()
treewide: devm_kzalloc() -> devm_kcalloc()
treewide: devm_kmalloc() -> devm_kmalloc_array()
treewide: kvzalloc() -> kvcalloc()
treewide: kvmalloc() -> kvmalloc_array()
treewide: kzalloc_node() -> kcalloc_node()
treewide: kzalloc() -> kcalloc()
treewide: kmalloc() -> kmalloc_array()
mm: Introduce kvcalloc()
video: uvesafb: Fix integer overflow in allocation
UBIFS: Fix potential integer overflow in allocation
leds: Use struct_size() in allocation
Convert intel uncore to struct_size
... -
The kzalloc_node() function has a 2-factor argument form, kcalloc_node(). This
patch replaces cases of:kzalloc_node(a * b, gfp, node)
with:
kcalloc_node(a * b, gfp, node)as well as handling cases of:
kzalloc_node(a * b * c, gfp, node)
with:
kzalloc_node(array3_size(a, b, c), gfp, node)
as it's slightly less ugly than:
kcalloc_node(array_size(a, b), c, gfp, node)
This does, however, attempt to ignore constant size factors like:
kzalloc_node(4 * 1024, gfp, node)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@(
kzalloc_node(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc_node(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@(
kzalloc_node(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc_node(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc_node(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc_node(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc_node(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc_node(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc_node(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc_node(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@(
- kzalloc_node
+ kcalloc_node
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@- kzalloc_node
+ kcalloc_node
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@(
kzalloc_node(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc_node(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc_node(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc_node(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc_node(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc_node(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc_node(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc_node(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@(
kzalloc_node(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc_node(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc_node(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc_node(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc_node(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc_node(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@(
kzalloc_node(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc_node(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc_node(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc_node(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc_node(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc_node(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc_node(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc_node(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@(
kzalloc_node(C1 * C2 * C3, ...)
|
kzalloc_node(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc_node(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc_node(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc_node(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@(
kzalloc_node(sizeof(THING) * C2, ...)
|
kzalloc_node(sizeof(TYPE) * C2, ...)
|
kzalloc_node(C1 * C2 * C3, ...)
|
kzalloc_node(C1 * C2, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc_node
+ kcalloc_node
(
- E1 * E2
+ E1, E2
, ...)
)Signed-off-by: Kees Cook
12 Jun, 2018
6 commits
-
ntb_transport_create_queue() is never called in atomic context.
ntb_transport_create_queue() is only called by ntb_netdev_probe(),
which is set as ".probe" in struct ntb_transport_client.Despite never getting called from atomic context,
ntb_transport_create_queue() calls kzalloc_node() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.This is found by a static analysis tool named DCNS written by myself.
And I also manually check itSigned-off-by: Jia-Ju Bai
Signed-off-by: Jon Mason -
ntb_transport_setup_qp_mw() is never called in atomic context.
ntb_transport_setup_qp_mw() is only called by ntb_transport_link_work(),
which is set as a parameter of INIT_DELAYED_WORK()
in ntb_transport_probe().Despite never getting called from atomic context,
ntb_transport_setup_qp_mw() calls kzalloc_node() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.Signed-off-by: Jia-Ju Bai
Signed-off-by: Jon Mason -
Signed-off-by: Wolfram Sang
Acked-by: Serge Semin
Signed-off-by: Jon Mason -
Change all references to skx to gen3 NTB.
Signed-off-by: Dave Jiang
Signed-off-by: Jon Mason -
Move the Intel hw gen3 code to its own source file. The ntb_hw_intel.c was
getting too large and makes it hard to maintain with future hardware
changes.Signed-off-by: Dave Jiang
Signed-off-by: Jon Mason -
Break out the generation specific definitions to different headers
Signed-off-by: Dave Jiang
Signed-off-by: Jon Mason
29 Jan, 2018
12 commits
-
Sparse is whining about the u32 and __le32 mixed usage in the driver
drivers/ntb/test/ntb_perf.c:288:21: warning: cast to restricted __le32
drivers/ntb/test/ntb_perf.c:295:37: warning: incorrect type in argument 4 (different base types)
drivers/ntb/test/ntb_perf.c:295:37: expected unsigned int [unsigned] [usertype] val
drivers/ntb/test/ntb_perf.c:295:37: got restricted __le32 [usertype]
...NTB hardware drivers shall accept CPU-endian data and translate it to
the portable formate by internal means, so the explicit conversions
are not necessary before Scratchpad/Messages API usage anymore.Fixes: b83003b3fdc1 ("NTB: ntb_perf: Add full multi-port NTB API support")
Signed-off-by: Serge Semin
Acked-by: Arnd Bergmann
Signed-off-by: Jon Mason -
We accidentally return success if dmaengine_submit() fails. The fix is
to preserve the error code from dma_submit_error().Signed-off-by: Dan Carpenter
Acked-by: Serge Semin
Signed-off-by: Jon Mason -
Fixes the following sparse warnings:
drivers/ntb/hw/mscc/ntb_hw_switchtec.c:1552:6: warning:
symbol 'switchtec_ntb_remove' was not declared. Should it be static?Signed-off-by: Wei Yongjun
Reviewed-by: Logan Gunthorpe
Signed-off-by: Jon Mason -
Currently there is a memory leak on buf when the call to ntb_mw_get_align
fails. Add an exit err label and jump to this so that kfree on buf frees
the memory.Detected by CoverityScan, CID#1464286 ("Resource leak")
Fixes: d637628ce00c ("NTB: ntb_tool: Add full multi-port NTB API support")
Signed-off-by: Colin Ian King
Acked-by: Serge Semin
Signed-off-by: Jon Mason -
On 32-bit architectures, resource_size_t is usually 'unsigned int' or
'unsigned long' but not 'unsigned long long', so we get a warning
about printing the wrong data:drivers/ntb/test/ntb_perf.c: In function 'perf_setup_peer_mw':
drivers/ntb/test/ntb_perf.c:1390:35: error: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'resource_size_t {aka unsigned int}' [-Werror=format=]This changes the format string to the special %pa that is already
used elsewhere in the same file.Fixes: b83003b3fdc1 ("NTB: ntb_perf: Add full multi-port NTB API support")
Signed-off-by: Arnd Bergmann
Signed-off-by: Jon Mason -
Since Switchtec patch there has been a new topology added to
the NTB API. It's called NTB_TOPO_SWITCH and dedicated for
PCIe switch chips. Even though topo field isn't used within the
IDT driver much, lets set it for the sake of unification.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
Former NTB Performance driver could only work with NTB devices, which
got Scratchpads available and had just two ports. Since there are
devices, which don't have Scratchpads and got more than two peer
ports, the performance measuring tool needs to be rewritten. This
patch adds the ability to test any available NTB peer.
Additionally it allows to set NTB memory windows up using any
available data exchange interface: Scratchpad or Message registers.
Some cleanups are also added here.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
Former NTB Debugging tool driver supported only the limited
functionality of the recently updated NTB API, which is now available
to work with the truly NTB multi-port devices and devices, which
got NTB Message registers instead of Scratchpads. This patch
fully rewrites the driver so one would fully expose all the new
NTB API interfaces. Particularly it concerns the Message registers,
peer ports API, NTB link settings. Additional cleanups are also added
here.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
Current Ping Pong driver can't truly work with multi-port devices.
Additionally it requires the Scratchpad registers being available
on NTB device. This patches rewrites the driver so one would
perform the cyclic Ping-Pong algorithm around all the available
NTB peers and makes it working with NTB hardware, which doesn't
support Scratchpads, but such alternative as NTB Message register.
Additional cleanups are also added here.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
The dma_mask and dma_coherent_mask fields of the NTB struct device
weren't initialized in hardware drivers. In fact it should be done
instead of PCIe interface usage, since NTB clients are supposed to
use NTB API and left unaware of real hardware implementation.
In addition to that ntb_device_register() method shouldn't clear
the passed ntb_dev structure, since it dma_mask is initialized
by hardware drivers.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
There is a common methods signature form used over all the NTB API
like functions naming scheme, arguments names and order, etc.
Recently added NTB messaging API IO callbacks were named a bit
different so should be renamed to be in compliance with the rest
of the API.Signed-off-by: Serge Semin
Signed-off-by: Jon Mason -
Newer gcc (version 7 and 8 presumably) warn about a statement mixing
the << operator with logical and:drivers/ntb/hw/mscc/ntb_hw_switchtec.c: In function 'switchtec_ntb_init_sndev':
drivers/ntb/hw/mscc/ntb_hw_switchtec.c:888:24: error: '<
Signed-off-by: Arnd Bergmann
Signed-off-by: Jon Mason
