Commit graph

1015363 commits

Author SHA1 Message Date
Dan Carpenter
3d0167f2a6 net: dsa: qca8k: check the correct variable in qca8k_set_mac_eee()
This code check "reg" but "ret" was intended so the error handling will
never trigger.

Fixes: 7c9896e378 ("net: dsa: qca8k: check return value of read functions correctly")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:10:38 -07:00
Dan Carpenter
aa3d020b22 net: dsa: qca8k: fix an endian bug in qca8k_get_ethtool_stats()
The "hi" variable is a u64 but the qca8k_read() writes to the top 32
bits of it.  That will work on little endian systems but it's a bit
subtle.  It's cleaner to make declare "hi" as a u32.  We will still need
to cast it when we shift it later on in the function but that's fine.

Fixes: 7c9896e378 ("net: dsa: qca8k: check return value of read functions correctly")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:10:38 -07:00
David S. Miller
dac8115290 Merge branch 'lapbther-cleanups'
Peng Li says:

====================
net: lapbether: clean up some code style issues

This patchset clean up some code style issues.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
63a2bb15fe net: lapbether: fix the code style issue about line length
According to the chackpatch.pl,
line length of 123 exceeds 100 columns, so fix it.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
c564c049a3 net: lapbether: fix the alignment issue
Alignment should match open parenthesis.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
d49859601d net: lapbether: replace comparison to NULL with "lapbeth_get_x25_dev"
According to the chackpatch.pl, comparison to NULL could
be written "lapbeth_get_x25_dev".

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
4f9893c762 net: lapbether: fix the comments style issue
Networking block comments don't use an empty /* line,
use /* Comment...

Block comments use * on subsequent lines.
Block comments use a trailing */ on a separate line.

This patch fixes the comments style issues.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
d5e686e8b6 net: lapbether: remove unnecessary out of memory message
This patch removes unnecessary out of memory message,
to fix the following checkpatch.pl warning:
"WARNING: Possible unnecessary 'out of memory' message"

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
2e350780ae net: lapbether: remove trailing whitespaces
This patch removes trailing whitespaces.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
a61bebc774 net: lapbether: move out assignment in if condition
Should not use assignment in if condition.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
5bc5f5f27b net: lapbether: add blank line after declarations
This patch fixes the checkpatch error about missing a blank line
after declarations.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Peng Li
eff57ab52c net: lapbether: remove redundant blank line
This patch the redundant blank line.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 14:02:58 -07:00
Baokun Li
4724acc47c net: hns3: use list_move_tail instead of list_del/list_add_tail in hclge_main.c
Using list_move_tail() instead of list_del() + list_add_tail() in hclge_main.c.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 13:55:38 -07:00
Baokun Li
49768ce98c net: hns3: use list_move_tail instead of list_del/list_add_tail in hclgevf_main.c
Using list_move_tail() instead of list_del() + list_add_tail() in hclgevf_main.c.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 13:55:38 -07:00
Baokun Li
39c3783ec0 nfp: use list_move instead of list_del/list_add in nfp_cppcore.c
Using list_move() instead of list_del() + list_add() in nfp_cppcore.c.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 13:55:37 -07:00
gushengxian
db67f24934 net/x25: fix a mistake in grammar
Fix a mistake in grammar.

Signed-off-by: gushengxian <gushengxian@yulong.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 13:54:26 -07:00
Yang Yingliang
e89a2cdb1c net: ethernet: ravb: Use devm_platform_get_and_ioremap_resource()
Use devm_platform_get_and_ioremap_resource() to simplify
code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 13:51:11 -07:00
Florian Fainelli
2c32a3d3c2 net: dsa: b53: Do not force CPU to be always tagged
Commit ca89319483 ("net: dsa: b53: Keep CPU port as tagged in all
VLANs") forced the CPU port to be always tagged in any VLAN membership.
This was necessary back then because we did not support Broadcom tags
for all configurations so the only way to differentiate tagged and
untagged traffic while DSA_TAG_PROTO_NONE was used was to force the CPU
port into being always tagged.

With most configurations enabling Broadcom tags, especially after
8fab459e69 ("net: dsa: b53: Enable Broadcom tags for 531x5/539x
families") we do not need to apply this unconditional force tagging of
the CPU port in all VLANs.

A helper function is introduced to faciliate the encapsulation of the
specific condition requiring the CPU port to be tagged in all VLANs and
the dsa_switch_ops::untag_bridge_pvid boolean is moved to when
dsa_switch_ops::setup is called when we have already determined the
tagging protocol we will be using.

Reported-by: Matthew Hagan <mnhagan88@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Tested-by: Matthew Hagan <mnhagan88@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-09 13:49:20 -07:00
gushengxian
2aa8eca6cb net: appletalk: fix some mistakes in grammar
Fix some mistakes in grammar.

Signed-off-by: gushengxian <gushengxian@yulong.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 19:27:57 -07:00
Matthew Hagan
e67f325e9c net: stmmac: explicitly deassert GMAC_AHB_RESET
We are currently assuming that GMAC_AHB_RESET will already be deasserted
by the bootloader. However if this has not been done, probing of the GMAC
will fail. To remedy this we must ensure GMAC_AHB_RESET has been deasserted
prior to probing.

v2 changes:
 - remove NULL condition check for stmmac_ahb_rst in stmmac_main.c
 - unwrap dev_err() message in stmmac_main.c
 - add PTR_ERR() around plat->stmmac_ahb_rst in stmmac_platform.c

v3 changes:
 - add error pointer to dev_err() output
 - add reset_control_assert(stmmac_ahb_rst) in stmmac_dvr_remove
 - revert PTR_ERR() around plat->stmmac_ahb_rst since this is performed
   on the returned value of ret by the calling function

Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:42:12 -07:00
Yang Yingliang
52481e5859 sh_eth: Use devm_platform_get_and_ioremap_resource()
Use devm_platform_get_and_ioremap_resource() to simplify
code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:38:03 -07:00
Yang Yingliang
5b38b97f40 net: nixge: simplify code with devm platform functions
Use devm_platform_get_and_ioremap_resource() and
devm_platform_ioremap_resource_byname to simplify
code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:36:57 -07:00
Vladimir Oltean
de274be32c net: dsa: felix: set TX flow control according to the phylink_mac_link_up resolution
Instead of relying on the static initialization done by ocelot_init_port()
which enables flow control unconditionally, set SYS_PAUSE_CFG_PAUSE_ENA
according to the parameters negotiated by the PHY.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:35:14 -07:00
Wang Hai
96bffe7023 net: x25: Use list_for_each_entry() to simplify code in x25_forward.c
Convert list_for_each() to list_for_each_entry() where
applicable. This simplifies the code.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:31:25 -07:00
Wang Hai
78595dfcb2 ethernet/qlogic: Use list_for_each_entry() to simplify code in qlcnic_hw.c
Convert list_for_each() to list_for_each_entry() where
applicable. This simplifies the code.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:31:25 -07:00
Vladimir Oltean
b55b1d50b0 net: stmmac: fix NPD with phylink_set_pcs if there is no MDIO bus
priv->plat->mdio_bus_data is optional, some platforms may not set it,
however we proceed to look straight at priv->plat->mdio_bus_data->has_xpcs.

Since the xpcs is instantiated based on the has_xpcs property, we can
avoid looking at the priv->plat->mdio_bus_data structure altogether and
just check for the presence of the xpcs pointer.

Fixes: 11059740e6 ("net: pcs: xpcs: convert to phylink_pcs_ops")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:31:25 -07:00
Wang Hai
e83332842a net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c
Convert list_for_each() to list_for_each_entry() where
applicable. This simplifies the code.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:31:25 -07:00
Wang Hai
3835a6614a net: x25: Use list_for_each_entry() to simplify code in x25_link.c
Convert list_for_each() to list_for_each_entry() where
applicable. This simplifies the code.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:31:24 -07:00
Wang Hai
36861d1f04 net: qede: Use list_for_each_entry() to simplify code
Convert list_for_each() to list_for_each_entry() where
applicable. This simplifies the code.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 16:31:24 -07:00
David S. Miller
1c7536528c Merge branch 'hns3-RAS'
Guangbin Huang says:

====================
net: hns3: add RAS compatibility adaptation solution

This patchset adds RAS compatibility adaptation solution for new devices.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:43:31 -07:00
Jiaran Zhang
1c360a4a07 net: hns3: add error handling compatibility during initialization
During initialization, the driver logs and clears the hw errors that
already occurred. For device supports imp-handle ras capability, it
needs handle different error status, otherwise it may cause wrong reset.

So fix it by adding a new processing branch.

Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:43:31 -07:00
Jiaran Zhang
8a95e360fd net: hns3: update error recovery module and type
Update error recovery module and type for RoCE.

The enumeration values of module names and error types are not sorted
in sequence. If use the current printing mode, they cannot be correctly
printed.

Use the index mode, If mod_id and type_id match the enumerated value,
display the corresponding information.

Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:43:31 -07:00
Jiaran Zhang
e65e9f5c2e net: hns3: add support for imp-handle ras capability
IMP(Intelligent Management Processor) firmware add a new feature to
handle and consolidate RAS information for new devices, NIC driver
only needs to query the reported RAS information. NIC driver adds
support for this feature.

Driver queries device capability to check whether IMP support this
feature, If yes, execute the new RAS processing branch.

In order to add a method to check whether PF supports imp-handle RAS
feature, add dumping this info in debugfs.

Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:43:30 -07:00
Jiaran Zhang
2e2deee761 net: hns3: add the RAS compatibility adaptation solution
To adapt to hardware modification and ensure that the driver is
compatible with the original error handling content, we need to add the
RAS compatibility adaptation solution.

Add a processing branch to the driver during error handling. In the new
processing branch, NIC fault information is integrated by the IMP. An
interaction command is added between the driver and IMP to query
and clear the fault source and interrupt source. The IMP integrates
error information and reports the highest reset level to the driver.

Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:43:30 -07:00
Yufeng Mo
17f5924402 net: hns3: add support for handling all errors through MSI-X
Currently, hardware errors can be reported through AER or MSI-X mode.
However, the AER mode is intended to handle only bus errors, but not
hardware errors. On the other hand, virtual machines cannot handle
AER errors. When an AER error is reported, virtual machines will be
suspended. So add support for handling all these hardware errors
through MSI-X mode which depends on a newer version of firmware,
and reserve the handler of the AER mode for compatibility.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:43:30 -07:00
David S. Miller
e0eb625a7d Merge branch 'ena-updates'
Shay Agroskin says:

====================
se build_skb and reorganize some code in ENA

this patchset introduces several changes:

- Use build_skb() on RX side.
  This allows to ensure that the headers are in the linear part

- Batch some code into functions and remove some of the code to make it more
  readable and less error prone

- Fix RST format and outdated description in ENA documentation

- Improve cache alignment in the code
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:10 -07:00
Shay Agroskin
a01f2cd0cc net: ena: re-organize code to improve readability
Restructure some ethtool to a switch-case blocks to make it more uniform
with other similar functions.
Also restructure variable declaration to create reversed x-mas tree.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:10 -07:00
Shay Agroskin
947c54c395 net: ena: Use dev_alloc() in RX buffer allocation
Use dev_alloc() when allocating RX buffers instead of specifying the
allocation flags explicitly. This result in same behaviour with less
code.

Also move the page allocation and its DMA mapping into a function. This
creates a logical block, which may help understanding the code.

Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:10 -07:00
Shay Agroskin
9e8afb0596 net: ena: aggregate doorbell common operations into a function
The ena_ring_tx_doorbell() is introduced to call the doorbell and
increase the driver's corresponding stat.

Signed-off-by: Ido Segev <idose@amazon.com>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:10 -07:00
Shay Agroskin
511c537bb5 net: ena: fix RST format in ENA documentation file
The documentation file used to be written in markdown format but was
converted to reStructuredText (rst).

The converted file doesn't keep up with rst format requirements which
results in hard-to-read text.

This patch fixes the formatting of the file. The patch also
* Highlights and emphasizes some lines to improve readability
* Rephrases some hard-to-understand text
* Updates outdated function descriptions.
* Removes TSO description which falsely claims the driver supports it

Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:09 -07:00
Shay Agroskin
15efff7649 net: ena: Remove module param and change message severity
Remove the module param 'debug' which allows to specify the message
level of the driver. This value can be specified using ethtool command.
Also reduce the message level of LLQ support to be a warning since it is
not an indication of an error.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:09 -07:00
Shay Agroskin
0ee251cd9a net: ena: add jiffies of last napi call to stats
There are instances when we want to know when the last napi was
called for debugging.

On stuck / heavy loaded CPUs, the ena napi handler might not be
called for a long period of time. This stat can help us to
determine how much time passed since the last execution of napi.

Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:09 -07:00
Shay Agroskin
9e5269a915 net: ena: use build_skb() in RX path
This patch converts the RX path to use build_skb() for packets larger
than copybreak (set to 256 by default). This function makes the first
descriptor's page to be the linear part of the sk_buff struct buffer.

Also remove the SKB description from the README since most of it no
longer relevant and the parts that are left don't add information.

Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:09 -07:00
Shay Agroskin
091d0e85a0 net: ena: Improve error logging in driver
Add prints to improve logging of driver's errors.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:09 -07:00
Shay Agroskin
9912c72edd net: ena: Remove unused code
The ENA_DEFAULT_MIN_RX_BUFF_ALLOC_SIZE macro,
ena_xdp_queues_present() function and SUSPEND_RESUME enums aren't used
in the driver, and so not needed.

Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:09 -07:00
Shay Agroskin
e4ac382ebf net: ena: optimize data access in fast-path code
This tweaks several small places to improve the data access in fast
path:

* Remove duplicates of first_interrupt flag and surround it with
  WRITE/READ_ONCE macros:

  The flag is used to detect HW disorders in its
  interrupt communication with the driver. The flag is set when an
  interrupt is received and used in the health check function
  (ena_timer_service()) to help it find irregularities.

* Reorder some fields in ena_napi struct to take better advantage of
  cache access pattern.

* Move XDP TX queue number to a variable to save its calculation for
  every packet.

* Use likely in a condition to improve branch prediction

The 'first_interrupt' and 'interrupt_masked' flags were moved to reside
in the same cache line as the first fields of 'napi' struct. This
placement ensures that all memory accessed during upper-half handler
reside in the same cacheline (napi_schedule_irqoff() only accesses
'state' and 'poll_list' fields which are at the beginning of napi
struct).

Signed-off-by: Sameeh Jubran <sameehj@amazon.com>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:41:09 -07:00
David S. Miller
fa6d61e9c7 Merge branch 'mlxsw-various-updates'
Ido Schimmel says:

====================
mlxsw: Various updates

This patchset contains various updates for mlxsw. The most significant
change is the long overdue removal of the abort mechanism in the first
two patches.

Patches #1-#2 remove the route abort mechanism. This change is long
overdue and explained in detail in the commit message.

Patch #3 sets ports down in a few selftests that forgot to do so.
Discovered using a BPF tool (WIP) that monitors ASIC resources.

Patch #4 fixes an issue introduced by commit 557c4d2f78 ("selftests:
devlink_lib: add check for devlink device existence").

Patches #5-#8 modify the driver to read transceiver module's temperature
thresholds using MTMP register (when supported) instead of directly from
the module's EEPROM using MCIA register. This is both more reliable and
more efficient as now the module's temperature and thresholds are read
using one transaction instead of three.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:39:07 -07:00
Mykola Kostenok
72a64c2fe9 mlxsw: thermal: Read module temperature thresholds using MTMP register
mlxsw_thermal_module_trips_update() is used to update the trip points of
the module's thermal zone. Currently, this is done by querying the
thresholds from the module's EEPROM via MCIA register. This data does
not pass validation and in some cases can be unreliable. For example,
due to some problem with transceiver module.

Previous patch made it possible to read module's temperature and
thresholds via MTMP register. Therefore, extend
mlxsw_thermal_module_trips_update() to use the thresholds queried from
MTMP, if valid.

This is both more reliable and more efficient than current method, as
temperature and thresholds are queried in one transaction instead of
three. This is significant when working over a slow bus such as I2C.

Signed-off-by: Mykola Kostenok <c_mykolak@nvidia.com>
Acked-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:39:07 -07:00
Mykola Kostenok
e57977b34a mlxsw: thermal: Add function for reading module temperature and thresholds
Provide new function mlxsw_thermal_module_temp_and_thresholds_get() for
reading temperature and temperature thresholds by a single operation.
The motivation is to reduce the number of transactions with the device
which is important when operating over a slow bus such as I2C.

Currently, the sole caller of the function is only using it to read the
module's temperature. The next patch will also use it to query the
module's temperature thresholds.

Signed-off-by: Mykola Kostenok <c_mykolak@nvidia.com>
Acked-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:39:07 -07:00
Mykola Kostenok
befc204808 mlxsw: core_env: Read module temperature thresholds using MTMP register
Currently, module temperature thresholds are obtained from Management
Cable Info Access (MCIA) register by specifying the thresholds offsets
within module EEPROM layout. This data does not pass validation and in
some cases can be unreliable. For example, due to some problem with the
module.

Add support for a new feature provided by Management Temperature (MTMP)
register for sanitization of temperature thresholds values.

Extend mlxsw_env_module_temp_thresholds_get() to get temperature
thresholds through MTMP field 'max_operational_temperature' - if it is
not zero, feature is supported. Otherwise fallback to old method and get
the thresholds through MCIA.

Signed-off-by: Mykola Kostenok <c_mykolak@nvidia.com>
Acked-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-06-08 14:39:07 -07:00