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e5f3155267
The 'imply' keyword does not do what most people think it does, it only
politely asks Kconfig to turn on another symbol, but does not prevent
it from being disabled manually or built as a loadable module when the
user is built-in. In the ICE driver, the latter now causes a link failure:
aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_eth_ioctl':
ice_main.c:(.text+0x13b0): undefined reference to `ice_ptp_get_ts_config'
ice_main.c:(.text+0x13b0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_get_ts_config'
aarch64-linux-ld: ice_main.c:(.text+0x13bc): undefined reference to `ice_ptp_set_ts_config'
ice_main.c:(.text+0x13bc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_set_ts_config'
aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_prepare_for_reset':
ice_main.c:(.text+0x31fc): undefined reference to `ice_ptp_release'
ice_main.c:(.text+0x31fc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_release'
aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_rebuild':
This is a recurring problem in many drivers, and we have discussed
it several times befores, without reaching a consensus. I'm providing
a link to the previous email thread for reference, which discusses
some related problems.
To solve the dependency issue better than the 'imply' keyword, introduce a
separate Kconfig symbol "CONFIG_PTP_1588_CLOCK_OPTIONAL" that any driver
can depend on if it is able to use PTP support when available, but works
fine without it. Whenever CONFIG_PTP_1588_CLOCK=m, those drivers are
then prevented from being built-in, the same way as with a 'depends on
PTP_1588_CLOCK || !PTP_1588_CLOCK' dependency that does the same trick,
but that can be rather confusing when you first see it.
Since this should cover the dependencies correctly, the IS_REACHABLE()
hack in the header is no longer needed now, and can be turned back
into a normal IS_ENABLED() check. Any driver that gets the dependency
wrong will now cause a link time failure rather than being unable to use
PTP support when that is in a loadable module.
However, the two recently added ptp_get_vclocks_index() and
ptp_convert_timestamp() interfaces are only called from builtin code with
ethtool and socket timestamps, so keep the current behavior by stubbing
those out completely when PTP is in a loadable module. This should be
addressed properly in a follow-up.
As Richard suggested, we may want to actually turn PTP support into a
'bool' option later on, preventing it from being a loadable module
altogether, which would be one way to solve the problem with the ethtool
interface.
Fixes: 06c16d89d2 ("ice: register 1588 PTP clock device object for E810 devices")
Link: https://lore.kernel.org/netdev/20210804121318.337276-1-arnd@kernel.org/
Link: https://lore.kernel.org/netdev/CAK8P3a06enZOf=XyZ+zcAwBczv41UuCTz+=0FMf2gBz1_cOnZQ@mail.gmail.com/
Link: https://lore.kernel.org/netdev/CAK8P3a3=eOxE-K25754+fB_-i_0BZzf9a9RfPTX3ppSwu9WZXw@mail.gmail.com/
Link: https://lore.kernel.org/netdev/20210726084540.3282344-1-arnd@kernel.org/
Acked-by: Shannon Nelson <snelson@pensando.io>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210812183509.1362782-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
257 lines
6.9 KiB
Plaintext
257 lines
6.9 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Broadcom device configuration
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#
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config NET_VENDOR_BROADCOM
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bool "Broadcom devices"
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default y
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depends on (SSB_POSSIBLE && HAS_DMA) || PCI || BCM63XX || \
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SIBYTE_SB1xxx_SOC
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help
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If you have a network (Ethernet) chipset belonging to this class,
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say Y.
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Note that the answer to this question does not directly affect
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the kernel: saying N will just cause the configurator to skip all
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the questions regarding Broadcom chipsets. If you say Y, you will
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be asked for your specific chipset/driver in the following questions.
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if NET_VENDOR_BROADCOM
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config B44
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tristate "Broadcom 440x/47xx ethernet support"
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depends on SSB_POSSIBLE && HAS_DMA
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select SSB
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select MII
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select PHYLIB
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help
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If you have a network (Ethernet) controller of this type, say Y
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or M here.
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To compile this driver as a module, choose M here. The module
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will be called b44.
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# Auto-select SSB PCI-HOST support, if possible
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config B44_PCI_AUTOSELECT
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bool
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depends on B44 && SSB_PCIHOST_POSSIBLE
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select SSB_PCIHOST
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default y
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# Auto-select SSB PCICORE driver, if possible
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config B44_PCICORE_AUTOSELECT
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bool
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depends on B44 && SSB_DRIVER_PCICORE_POSSIBLE
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select SSB_DRIVER_PCICORE
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default y
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config B44_PCI
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bool
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depends on B44_PCI_AUTOSELECT && B44_PCICORE_AUTOSELECT
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default y
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config BCM4908_ENET
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tristate "Broadcom BCM4908 internal mac support"
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depends on ARCH_BCM4908 || COMPILE_TEST
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default y if ARCH_BCM4908
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help
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This driver supports Ethernet controller integrated into Broadcom
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BCM4908 family SoCs.
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config BCM63XX_ENET
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tristate "Broadcom 63xx internal mac support"
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depends on BCM63XX
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select MII
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select PHYLIB
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help
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This driver supports the ethernet MACs in the Broadcom 63xx
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MIPS chipset family (BCM63XX).
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config BCMGENET
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tristate "Broadcom GENET internal MAC support"
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depends on HAS_IOMEM
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select MII
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select PHYLIB
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select FIXED_PHY
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select BCM7XXX_PHY
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select MDIO_BCM_UNIMAC
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select DIMLIB
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select BROADCOM_PHY if ARCH_BCM2835
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help
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This driver supports the built-in Ethernet MACs found in the
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Broadcom BCM7xxx Set Top Box family chipset.
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config BNX2
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tristate "QLogic bnx2 support"
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depends on PCI
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select CRC32
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select FW_LOADER
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help
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This driver supports QLogic bnx2 gigabit Ethernet cards.
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To compile this driver as a module, choose M here: the module
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will be called bnx2. This is recommended.
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config CNIC
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tristate "QLogic CNIC support"
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depends on PCI && (IPV6 || IPV6=n)
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depends on MMU
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select BNX2
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select UIO
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help
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This driver supports offload features of QLogic bnx2 gigabit
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Ethernet cards.
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To compile this driver as a module, choose M here: the module
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will be called cnic. This is recommended.
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config SB1250_MAC
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tristate "SB1250 Gigabit Ethernet support"
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depends on SIBYTE_SB1xxx_SOC
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select PHYLIB
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help
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This driver supports Gigabit Ethernet interfaces based on the
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Broadcom SiByte family of System-On-a-Chip parts. They include
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the BCM1120, BCM1125, BCM1125H, BCM1250, BCM1255, BCM1280, BCM1455
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and BCM1480 chips.
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To compile this driver as a module, choose M here: the module
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will be called sb1250-mac.
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config TIGON3
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tristate "Broadcom Tigon3 support"
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depends on PCI
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depends on PTP_1588_CLOCK_OPTIONAL
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select PHYLIB
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help
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This driver supports Broadcom Tigon3 based gigabit Ethernet cards.
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To compile this driver as a module, choose M here: the module
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will be called tg3. This is recommended.
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config TIGON3_HWMON
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bool "Broadcom Tigon3 HWMON support"
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default y
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depends on TIGON3 && HWMON && !(TIGON3=y && HWMON=m)
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help
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Say Y if you want to expose the thermal sensor on Tigon3 devices.
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config BNX2X
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tristate "Broadcom NetXtremeII 10Gb support"
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depends on PCI
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depends on PTP_1588_CLOCK_OPTIONAL
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select FW_LOADER
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select ZLIB_INFLATE
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select LIBCRC32C
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select MDIO
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help
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This driver supports Broadcom NetXtremeII 10 gigabit Ethernet cards.
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To compile this driver as a module, choose M here: the module
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will be called bnx2x. This is recommended.
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config BNX2X_SRIOV
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bool "Broadcom 578xx and 57712 SR-IOV support"
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depends on BNX2X && PCI_IOV
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default y
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help
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This configuration parameter enables Single Root Input Output
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Virtualization support in the 578xx and 57712 products. This
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allows for virtual function acceleration in virtual environments.
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config BGMAC
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tristate
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help
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This enables the integrated ethernet controller support for many
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Broadcom (mostly iProc) SoCs. An appropriate bus interface driver
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needs to be enabled to select this.
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config BGMAC_BCMA
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tristate "Broadcom iProc GBit BCMA support"
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depends on BCMA && BCMA_HOST_SOC
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depends on BCM47XX || ARCH_BCM_5301X || COMPILE_TEST
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select BGMAC
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select PHYLIB
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select FIXED_PHY
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help
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This driver supports GBit MAC and BCM4706 GBit MAC cores on BCMA bus.
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They can be found on BCM47xx SoCs and provide gigabit ethernet.
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In case of using this driver on BCM4706 it's also requires to enable
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BCMA_DRIVER_GMAC_CMN to make it work.
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config BGMAC_PLATFORM
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tristate "Broadcom iProc GBit platform support"
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depends on ARCH_BCM_IPROC || COMPILE_TEST
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select BGMAC
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select PHYLIB
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select FIXED_PHY
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default ARCH_BCM_IPROC
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help
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Say Y here if you want to use the Broadcom iProc Gigabit Ethernet
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controller through the generic platform interface
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config SYSTEMPORT
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tristate "Broadcom SYSTEMPORT internal MAC support"
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depends on HAS_IOMEM
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depends on NET_DSA || !NET_DSA
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select MII
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select PHYLIB
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select FIXED_PHY
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select DIMLIB
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help
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This driver supports the built-in Ethernet MACs found in the
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Broadcom BCM7xxx Set Top Box family chipset using an internal
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Ethernet switch.
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config BNXT
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tristate "Broadcom NetXtreme-C/E support"
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depends on PCI
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depends on PTP_1588_CLOCK_OPTIONAL
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select FW_LOADER
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select LIBCRC32C
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select NET_DEVLINK
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select PAGE_POOL
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select DIMLIB
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help
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This driver supports Broadcom NetXtreme-C/E 10/25/40/50 gigabit
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Ethernet cards. To compile this driver as a module, choose M here:
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the module will be called bnxt_en. This is recommended.
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config BNXT_SRIOV
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bool "Broadcom NetXtreme-C/E SR-IOV support"
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depends on BNXT && PCI_IOV
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default y
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help
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This configuration parameter enables Single Root Input Output
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Virtualization support in the NetXtreme-C/E products. This
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allows for virtual function acceleration in virtual environments.
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config BNXT_FLOWER_OFFLOAD
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bool "TC Flower offload support for NetXtreme-C/E"
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depends on BNXT
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default y
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help
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This configuration parameter enables TC Flower packet classifier
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offload for eswitch. This option enables SR-IOV switchdev eswitch
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offload.
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config BNXT_DCB
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bool "Data Center Bridging (DCB) Support"
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default n
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depends on BNXT && DCB
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help
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Say Y here if you want to use Data Center Bridging (DCB) in the
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driver.
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If unsure, say N.
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config BNXT_HWMON
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bool "Broadcom NetXtreme-C/E HWMON support"
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default y
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depends on BNXT && HWMON && !(BNXT=y && HWMON=m)
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help
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Say Y if you want to expose the thermal sensor data on NetXtreme-C/E
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devices, via the hwmon sysfs interface.
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endif # NET_VENDOR_BROADCOM
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