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Author SHA1 Message Date
Jakub Kicinski
7eb6deb3f5 Revert "pds_core: Fix some kernel-doc comments"
This reverts commit cb39c35783.
Patch was applied to hastily, the problem is already fixed
in Alex's vfio tree:
https://lore.kernel.org/all/20230821112237.105872b5.alex.williamson@redhat.com/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-21 12:11:35 -07:00
Yang Li
cb39c35783 pds_core: Fix some kernel-doc comments
Fix some kernel-doc comments to silence the warnings:

drivers/net/ethernet/amd/pds_core/auxbus.c:18: warning: Function parameter or member 'pf' not described in 'pds_client_register'
drivers/net/ethernet/amd/pds_core/auxbus.c:18: warning: Excess function parameter 'pf_pdev' description in 'pds_client_register'
drivers/net/ethernet/amd/pds_core/auxbus.c:58: warning: Function parameter or member 'pf' not described in 'pds_client_unregister'
drivers/net/ethernet/amd/pds_core/auxbus.c:58: warning: Excess function parameter 'pf_pdev' description in 'pds_client_unregister'

Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-08-21 07:48:34 +01:00
Yu Liao
2f48b1d854 pds_core: remove redundant pci_clear_master()
do_pci_disable_device() disable PCI bus-mastering as following:
static void do_pci_disable_device(struct pci_dev *dev)
{
		u16 pci_command;

		pci_read_config_word(dev, PCI_COMMAND, &pci_command);
		if (pci_command & PCI_COMMAND_MASTER) {
				pci_command &= ~PCI_COMMAND_MASTER;
				pci_write_config_word(dev, PCI_COMMAND, pci_command);
		}

		pcibios_disable_device(dev);
}
And pci_disable_device() sets dev->is_busmaster to 0.

pci_enable_device() is called only once before calling to
pci_disable_device() and such pci_clear_master() is not needed. So remove
redundant pci_clear_master().

Also rename goto label 'err_out_clear_master' to 'err_out_disable_device'.

Signed-off-by: Yu Liao <liaoyu15@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Shannon Nelson <shannon.nelson@amd.com>
Link: https://lore.kernel.org/r/20230817025709.2023553-1-liaoyu15@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-18 15:30:03 -07:00
Brett Creeley
06d220f13b pds_core: Fix function header descriptions
The pds-vfio-pci series made a small interface change to
pds_client_register() and pds_client_unregister(), but forgot to update
the function header descriptions. Fix that.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202308180411.OSqJPtMz-lkp@intel.com/
Fixes: b021d05e10 ("pds_core: Require callers of register/unregister to pass PF drvdata")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Link: https://lore.kernel.org/r/20230817224212.14266-1-brett.creeley@amd.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2023-08-18 09:16:17 -06:00
Brett Creeley
b021d05e10 pds_core: Require callers of register/unregister to pass PF drvdata
Pass a pointer to the PF's private data structure rather than
bouncing in and out of the PF's PCI function address.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20230807205755.29579-4-brett.creeley@amd.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2023-08-16 10:53:11 -06:00
Arnd Bergmann
7191c140fa ethernet: atarilance: mark init function static
The init function is only referenced locally, so it should be static to
avoid this warning:

drivers/net/ethernet/amd/atarilance.c:370:28: error: no previous prototype for 'atarilance_probe' [-Werror=missing-prototypes]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20230810122528.1220434-2-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-11 18:24:02 -07:00
Brett Creeley
30ff01ee99 pds_core: Fix documentation for pds_client_register
The documentation above pds_client_register states that it returns 0 on
success and negative on error. However, it actually returns a positive
client ID on success and negative on error. Fix the documentation to
state exactly that.

Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Link: https://lore.kernel.org/r/20230801165833.1622-1-brett.creeley@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-02 12:28:32 -07:00
Rob Herring
3d40aed862 net: Explicitly include correct DT includes
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Acked-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230727014944.3972546-1-robh@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-07-27 20:33:16 -07:00
Julia Lawall
906a76cc76 pds_core: use vmalloc_array and vcalloc
Use vmalloc_array and vcalloc to protect against
multiplication overflows.

The changes were done using the following Coccinelle
semantic patch:

// <smpl>
@initialize:ocaml@
@@

let rename alloc =
  match alloc with
    "vmalloc" -> "vmalloc_array"
  | "vzalloc" -> "vcalloc"
  | _ -> failwith "unknown"

@@
    size_t e1,e2;
    constant C1, C2;
    expression E1, E2, COUNT, x1, x2, x3;
    typedef u8;
    typedef __u8;
    type t = {u8,__u8,char,unsigned char};
    identifier alloc = {vmalloc,vzalloc};
    fresh identifier realloc = script:ocaml(alloc) { rename alloc };
@@

(
      alloc(x1*x2*x3)
|
      alloc(C1 * C2)
|
      alloc((sizeof(t)) * (COUNT), ...)
|
-     alloc((e1) * (e2))
+     realloc(e1, e2)
|
-     alloc((e1) * (COUNT))
+     realloc(COUNT, e1)
|
-     alloc((E1) * (E2))
+     realloc(E1, E2)
)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/20230627144339.144478-10-Julia.Lawall@inria.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-27 09:30:23 -07:00
Raju Rangoju
6b5f9a87e1 amd-xgbe: extend 10Mbps support to MAC version 21H
MAC version 21H supports the 10Mbps speed. So, extend support to
platforms that support it.

Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@intel.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-06-13 10:44:11 +01:00
Brett Creeley
4f48c30312 pds_core: Fix FW recovery detection
Commit 523847df1b ("pds_core: add devcmd device interfaces") included
initial support for FW recovery detection. Unfortunately, the ordering
in pdsc_is_fw_good() was incorrect, which was causing FW recovery to be
undetected by the driver. Fix this by making sure to update the cached
fw_status by calling pdsc_is_fw_running() before setting the local FW
gen.

Fixes: 523847df1b ("pds_core: add devcmd device interfaces")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230605195116.49653-1-brett.creeley@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-06 21:10:01 -07:00
Raju Rangoju
dc362e20cd amd-xgbe: fix the false linkup in xgbe_phy_status
In the event of a change in XGBE mode, the current auto-negotiation
needs to be reset and the AN cycle needs to be re-triggerred. However,
the current code ignores the return value of xgbe_set_mode(), leading to
false information as the link is declared without checking the status
register.

Fix this by propagating the mode switch status information to
xgbe_phy_status().

Fixes: e57f7a3fea ("amd-xgbe: Prepare for working with more than one type of phy")
Co-developed-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-05-26 10:42:06 +01:00
Arnd Bergmann
067dee6575 net: isa: include net/Space.h
The legacy drivers that still get called from net/Space.c have prototypes
in net/Space, but this header is not included in most of the files that
define those functions:

drivers/net/ethernet/cirrus/cs89x0.c:1649:28: error: no previous prototype for 'cs89x0_probe' [-Werror=missing-prototypes]
drivers/net/ethernet/8390/ne.c:947:28: error: no previous prototype for 'ne_probe' [-Werror=missing-prototypes]
drivers/net/ethernet/8390/smc-ultra.c:167:28: error: no previous prototype for 'ultra_probe' [-Werror=missing-prototypes]
drivers/net/ethernet/amd/lance.c:438:28: error: no previous prototype for 'lance_probe' [-Werror=missing-prototypes]
drivers/net/ethernet/3com/3c515.c:422:20: error: no previous prototype for 'tc515_probe' [-Werror=missing-prototypes]

Add the inclusion to avoids the warnings.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230516194625.549249-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-05-17 21:27:30 -07:00
Shannon Nelson
1e76f42779 pds_core: fix mutex double unlock in error path
Fix a double unlock in an error handling path by unlocking as soon as
the error is seen and removing unlocks in the error cleanup path.

Link: https://lore.kernel.org/kernel-janitors/209a09f6-5ec6-40c7-a5ec-6260d8f54d25@kili.mountain/
Fixes: 523847df1b ("pds_core: add devcmd device interfaces")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-05-05 10:02:47 +01:00
Shannon Nelson
1eeb807ffd pds_core: add AUXILIARY_BUS and NET_DEVLINK to Kconfig
Add selecting of AUXILIARY_BUS and NET_DEVLINK to the pds_core
Kconfig.

Link: https://lore.kernel.org/netdev/ZE%2FduNH3lBLreNkJ@corigine.com/
Fixes: ddbcb22055 ("pds_core: Kconfig and pds_core.rst")
Suggested-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-05-03 09:16:53 +01:00
Shannon Nelson
ec788f7e96 pds_core: remove CONFIG_DEBUG_FS from makefile
This cruft from previous drafts should have been removed when
the code was updated to not use the old style dummy helpers.

Fixes: 55435ea772 ("pds_core: initial framework for pds_core PF driver")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-05-03 09:15:50 +01:00
Paolo Abeni
c248b27cfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-04-26 10:17:46 +02:00
Gencen Gan
d325c34d9e net: amd: Fix link leak when verifying config failed
After failing to verify configuration, it returns directly without
releasing link, which may cause memory leak.

Paolo Abeni thinks that the whole code of this driver is quite
"suboptimal" and looks unmainatained since at least ~15y, so he
suggests that we could simply remove the whole driver, please
take it into consideration.

Simon Horman suggests that the fix label should be set to
"Linux-2.6.12-rc2" considering that the problem has existed
since the driver was introduced and the commit above doesn't
seem to exist in net/net-next.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Gan Gecen <gangecen@hust.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-25 09:41:18 +01:00
Shannon Nelson
ddbcb22055 pds_core: Kconfig and pds_core.rst
Remaining documentation and Kconfig hook for building the driver.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:14 +01:00
Shannon Nelson
d24c28278a pds_core: publish events to the clients
When the Core device gets an event from the device, or notices
the device FW to be up or down, it needs to send those events
on to the clients that have an event handler.  Add the code to
pass along the events to the clients.

The entry points pdsc_register_notify() and pdsc_unregister_notify()
are EXPORTed for other drivers that want to listen for these events.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:13 +01:00
Shannon Nelson
10659034c6 pds_core: add the aux client API
Add the client API operations for running adminq commands.
The core registers the client with the FW, then the client
has a context for requesting adminq services.  We expect
to add additional operations for other clients, including
requesting additional private adminqs and IRQs, but don't have
the need yet.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:13 +01:00
Shannon Nelson
40ced89445 pds_core: devlink params for enabling VIF support
Add the devlink parameter switches so the user can enable
the features supported by the VFs.  The only feature supported
at the moment is vDPA.

Example:
    devlink dev param set pci/0000:2b:00.0 \
	    name enable_vnet cmode runtime value true

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:13 +01:00
Shannon Nelson
4569cce43b pds_core: add auxiliary_bus devices
An auxiliary_bus device is created for each vDPA type VF at VF
probe and destroyed at VF remove.  The aux device name comes
from the driver name + VIF type + the unique id assigned at PCI
probe.  The VFs are always removed on PF remove, so there should
be no issues with VFs trying to access missing PF structures.

The auxiliary_device names will look like "pds_core.vDPA.nn"
where 'nn' is the VF's uid.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:13 +01:00
Shannon Nelson
f53d93110a pds_core: add initial VF device handling
This is the initial VF PCI driver framework for the new
pds_vdpa VF device, which will work in conjunction with an
auxiliary_bus client of the pds_core driver.  This does the
very basics of registering for the new VF device, setting
up debugfs entries, and registering with devlink.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:13 +01:00
Shannon Nelson
65e0185ad7 pds_core: set up the VIF definitions and defaults
The Virtual Interfaces (VIFs) supported by the DSC's
configuration (vDPA, Eth, RDMA, etc) are reported in the
dev_ident struct and made visible in debugfs.  At this point
only vDPA is supported in this driver so we only setup
devices for that feature.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:13 +01:00
Shannon Nelson
49ce92fbee pds_core: add FW update feature to devlink
Add in the support for doing firmware updates.  Of the two
main banks available, a and b, this updates the one not in
use and then selects it for the next boot.

Example:
    devlink dev flash pci/0000:b2:00.0 \
	    file pensando/dsc_fw_1.63.0-22.tar

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:13 +01:00
Shannon Nelson
01ba61b55b pds_core: Add adminq processing and commands
Add the service routines for submitting and processing
the adminq messages and for handling notifyq events.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:12 +01:00
Shannon Nelson
45d76f4929 pds_core: set up device and adminq
Set up the basic adminq and notifyq queue structures.  These are
used mostly by the client drivers for feature configuration.
These are essentially the same adminq and notifyq as in the
ionic driver.

Part of this includes querying for device identity and FW
information, so we can make that available to devlink dev info.

  $ devlink dev info pci/0000:b5:00.0
  pci/0000:b5:00.0:
    driver pds_core
    serial_number FLM18420073
    versions:
        fixed:
          asic.id 0x0
          asic.rev 0x0
        running:
          fw 1.51.0-73
        stored:
          fw.goldfw 1.15.9-C-22
          fw.mainfwa 1.60.0-73
          fw.mainfwb 1.60.0-57

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:12 +01:00
Shannon Nelson
25b450c05a pds_core: add devlink health facilities
Add devlink health reporting on top of our fw watchdog.

Example:
  # devlink health show pci/0000:2b:00.0 reporter fw
  pci/0000:2b:00.0:
    reporter fw
      state healthy error 0 recover 0
  # devlink health diagnose pci/0000:2b:00.0 reporter fw
   Status: healthy State: 1 Generation: 0 Recoveries: 0

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:12 +01:00
Shannon Nelson
c2dbb09043 pds_core: health timer and workqueue
Add in the periodic health check and the related workqueue,
as well as the handlers for when a FW reset is seen.

The firmware is polled every 5 seconds to be sure that it is
still alive and that the FW generation didn't change.

The alive check looks to see that the PCI bus is still readable
and the fw_status still has the RUNNING bit on.  If not alive,
the driver stops activity and tears things down.  When the FW
recovers and the alive check again succeeds, the driver sets
back up for activity.

The generation check looks at the fw_generation to see if it
has changed, which can happen if the FW crashed and recovered
or was updated in between health checks.  If changed, the
driver counts that as though the alive test failed and forces
the fw_down/fw_up cycle.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:12 +01:00
Shannon Nelson
523847df1b pds_core: add devcmd device interfaces
The devcmd interface is the basic connection to the device through the
PCI BAR for low level identification and command services.  This does
the early device initialization and finds the identity data, and adds
devcmd routines to be used by later driver bits.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:12 +01:00
Shannon Nelson
55435ea772 pds_core: initial framework for pds_core PF driver
This is the initial PCI driver framework for the new pds_core device
driver and its family of devices.  This does the very basics of
registering for the new PF PCI device 1dd8:100c, setting up debugfs
entries, and registering with devlink.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-21 08:29:12 +01:00
Arnd Bergmann
bbe6418663 amd-xgbe: fix mismatched prototype
The forward declaration was introduced with a prototype that does
not match the function definition:

drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c:2166:13: error: conflicting types for 'xgbe_phy_perform_ratechange' due to enum/integer mismatch; have 'void(struct xgbe_prv_data *, enum xgbe_mb_cmd,  enum xgbe_mb_subcmd)' [-Werror=enum-int-mismatch]
 2166 | static void xgbe_phy_perform_ratechange(struct xgbe_prv_data *pdata,
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c:391:13: note: previous declaration of 'xgbe_phy_perform_ratechange' with type 'void(struct xgbe_prv_data *, unsigned int,  unsigned int)'
  391 | static void xgbe_phy_perform_ratechange(struct xgbe_prv_data *pdata,
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~

Ideally there should not be any forward declarations here, which
would make it easier to show that there is no unbounded recursion.
I tried fixing this but could not figure out how to avoid the
recursive call.

As a hotfix, address only the broken prototype to fix the build
problem instead.

Fixes: 4f3b20bfbb ("amd-xgbe: add support for rx-adaptation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20230203121553.2871598-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-06 22:33:18 -08:00
Raju Rangoju
4f3b20bfbb amd-xgbe: add support for rx-adaptation
The existing implementation for non-Autonegotiation 10G speed modes does
not enable RX adaptation in the Driver and FW. The RX Equalization
settings (AFE settings alone) are manually configured and the existing
link-up sequence in the driver does not perform rx adaptation process as
mentioned in the Synopsys databook. There's a customer request for 10G
backplane mode without Auto-negotiation and for the DAC cables of more
significant length that follow the non-Autonegotiation mode. These modes
require PHY to perform RX Adaptation.

The proposed logic adds the necessary changes to Yellow Carp devices to
ensure seamless RX Adaptation for 10G-SFI (LONG DAC) and 10G-KR without
AN (CL72 not present). The RX adaptation core algorithm is executed by
firmware, however, to achieve that a new mailbox sub-command is required
to be sent by the driver.

Co-developed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-02 15:17:19 +01:00
Raju Rangoju
3ee217c47b amd-xgbe: add 2.5GbE support to 10G BaseT mode
Add support to the driver to fully recognize and enable 2.5GbE speed in
10GBaseT mode.

Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-02 15:17:19 +01:00
Jakub Kicinski
b3c588cd55 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ipa/ipa_interrupt.c
drivers/net/ipa/ipa_interrupt.h
  9ec9b2a308 ("net: ipa: disable ipa interrupt during suspend")
  8e461e1f09 ("net: ipa: introduce ipa_interrupt_enable()")
  d50ed35587 ("net: ipa: enable IPA interrupt handlers separate from registration")
https://lore.kernel.org/all/20230119114125.5182c7ab@canb.auug.org.au/
https://lore.kernel.org/all/79e46152-8043-a512-79d9-c3b905462774@tessares.net/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-20 12:28:23 -08:00
Andrew Lunn
47e61593f3 amd-xgbe: Replace MII_ADDR_C45 with XGBE_ADDR_C45
The xgbe driver reuses MII_ADDR_C45 for its own purpose. The values
derived with it are never passed to phylib or a linux MDIO bus driver.
In order that MII_ADDR_C45 can be removed, add an XGBE specific

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-17 19:34:08 -08:00
Andrew Lunn
070f6186a2 amd-xgbe: Separate C22 and C45 transactions
The xgbe MDIO bus driver can perform both C22 and C45 transfers, when
using its MDIO bus hardware. The SFP I2C mdio bus driver only supports
C22. Create separate functions for each and register the C45 versions
using the new API calls where appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-17 19:34:08 -08:00
Raju Rangoju
926446ae24 amd-xgbe: Delay AN timeout during KR training
AN restart triggered during KR training not only aborts the KR training
process but also move the HW to unstable state. Driver has to wait upto
500ms or until the KR training is completed before restarting AN cycle.

Fixes: 7c12aa0877 ("amd-xgbe: Move the PHY support into amd-xgbe")
Co-developed-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-12 21:50:37 -08:00
Raju Rangoju
579923d84b amd-xgbe: TX Flow Ctrl Registers are h/w ver dependent
There is difference in the TX Flow Control registers (TFCR) between the
revisions of the hardware. The older revisions of hardware used to have
single register per queue. Whereas, the newer revision of hardware (from
ver 30H onwards) have one register per priority.

Update the driver to use the TFCR based on the reported version of the
hardware.

Fixes: c5aa9e3b81 ("amd-xgbe: Initial AMD 10GbE platform driver")
Co-developed-by: Ajith Nayak <Ajith.Nayak@amd.com>
Signed-off-by: Ajith Nayak <Ajith.Nayak@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-12 21:50:37 -08:00
Raju Rangoju
07445f3c7c amd-xgbe: Add support for 10 Mbps speed
Add the necessary changes to support 10 Mbps speed for BaseT and SFP
port modes. This is supported in MAC ver >= 30H.

Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Link: https://lore.kernel.org/r/20230109101819.747572-1-Raju.Rangoju@amd.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-01-10 11:20:30 +01:00
Jiguang Xiao
d530ece70f net: amd-xgbe: add missed tasklet_kill
The driver does not call tasklet_kill in several places.
Add the calls to fix it.

Fixes: 85b85c8534 ("amd-xgbe: Re-issue interrupt if interrupt status not cleared")
Signed-off-by: Jiguang Xiao <jiguang.xiao@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-12-30 07:33:05 +00:00
Paolo Abeni
b11919e1bb Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge in the left-over fixes before the net-next pull-request.

net/mptcp/subflow.c
  d3295fee3c ("mptcp: use proper req destructor for IPv6")
  36b122baf6 ("mptcp: add subflow_v(4,6)_send_synack()")

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-12-13 09:49:29 +01:00
Tom Lendacky
f8ab263d4d net: amd-xgbe: Check only the minimum speed for active/passive cables
There are cables that exist that can support speeds in excess of 10GbE.
The driver, however, restricts the EEPROM advertised nominal bitrate to
a specific range, which can prevent usage of cables that can support,
for example, up to 25GbE.

Rather than checking that an active or passive cable supports a specific
range, only check for a minimum supported speed.

Fixes: abf0a1c2b2 ("amd-xgbe: Add support for SFP+ modules")
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-12-12 10:05:36 +00:00
Tom Lendacky
4998006c73 net: amd-xgbe: Fix logic around active and passive cables
SFP+ active and passive cables are copper cables with fixed SFP+ end
connectors. Due to a misinterpretation of this, SFP+ active cables could
end up not being recognized, causing the driver to fail to establish a
connection.

Introduce a new enum in SFP+ cable types, XGBE_SFP_CABLE_FIBER, that is
the default cable type, and handle active and passive cables when they are
specifically detected.

Fixes: abf0a1c2b2 ("amd-xgbe: Add support for SFP+ modules")
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-12-12 10:05:36 +00:00
Yang Yingliang
6151d105df net: amd: lance: don't call dev_kfree_skb() under spin_lock_irqsave()
It is not allowed to call kfree_skb() or consume_skb() from hardware
interrupt context or with hardware interrupts being disabled.

It should use dev_kfree_skb_irq() or dev_consume_skb_irq() instead.
The difference between them is free reason, dev_kfree_skb_irq() means
the SKB is dropped in error and dev_consume_skb_irq() means the SKB
is consumed in normal.

In these two cases, dev_kfree_skb() is called consume the xmited SKB,
so replace it with dev_consume_skb_irq().

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-12-12 09:56:17 +00:00
Jacob Keller
337ffae0e4 ptp: xgbe: convert to .adjfine and adjust_by_scaled_ppm
The xgbe implementation of .adjfreq is implemented in terms of a
straight forward "base * ppb / 1 billion" calculation.

Convert this driver to .adjfine and use adjust_by_scaled_ppm to calculate
the new addend value.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-31 11:14:16 +00:00
Raju Rangoju
170a9e341a amd-xgbe: add the bit rate quirk for Molex cables
The offset 12 (bit-rate) of EEPROM SFP DAC (passive) cables is expected
to be in the range 0x64 to 0x68. However, the 5 meter and 7 meter Molex
passive cables have the rate ceiling 0x78 at offset 12.

Add a quirk for Molex passive cables to extend the rate ceiling to 0x78.

Fixes: abf0a1c2b2 ("amd-xgbe: Add support for SFP+ modules")
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-21 22:40:22 -07:00
Raju Rangoju
09c5f6bf11 amd-xgbe: fix the SFP compliance codes check for DAC cables
The current XGBE code assumes that offset 6 of EEPROM SFP DAC (passive)
cables is NULL. However, some cables (the 5 meter and 7 meter Molex
passive cables) have non-zero data at offset 6. Fix the logic by moving
the passive cable check above the active checks, so as not to be
improperly identified as an active cable. This will fix the issue for
any passive cable that advertises 1000Base-CX in offset 6.

Fixes: abf0a1c2b2 ("amd-xgbe: Add support for SFP+ modules")
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-21 22:40:22 -07:00
Raju Rangoju
fc75c032ae amd-xgbe: enable PLL_CTL for fixed PHY modes only
PLL control setting(RRC) is needed only in fixed PHY configuration to
fix the peer-peer issues. Without the PLL control setting, the link up
takes longer time in a fixed phy configuration.

Driver implements SW RRC for Autoneg On configuration, hence PLL control
setting (RRC) is not needed for AN On configuration, and can be skipped.

Also, PLL re-initialization is not needed for PHY Power Off and RRC
commands. Otherwise, they lead to mailbox errors. Added the changes
accordingly.

Fixes: daf182d360 ("net: amd-xgbe: Toggle PLL settings during rate change")
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-21 22:40:22 -07:00