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Commit b1d2b0a4 authored by Wolfram Sang's avatar Wolfram Sang
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Merge tag 'at24-4.19-updates-for-wolfram' of...

Merge tag 'at24-4.19-updates-for-wolfram' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-4.19

at24: updates for v4.19

New property: 'address-width' which allows to specify the number of
addressing bits. Up until now we only could choose one of the defined
models and rely on the flags specified in its corresponding chip data
structure.
parents 3b770017 a2b3bf48
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...@@ -15,6 +15,8 @@ Constructor parameters: ...@@ -15,6 +15,8 @@ Constructor parameters:
size) size)
5. the number of optional parameters (the parameters with an argument 5. the number of optional parameters (the parameters with an argument
count as two) count as two)
start_sector n (default: 0)
offset from the start of cache device in 512-byte sectors
high_watermark n (default: 50) high_watermark n (default: 50)
start writeback when the number of used blocks reach this start writeback when the number of used blocks reach this
watermark watermark
......
...@@ -66,7 +66,7 @@ Required root node properties: ...@@ -66,7 +66,7 @@ Required root node properties:
- "insignal,arndale-octa" - for Exynos5420-based Insignal Arndale - "insignal,arndale-octa" - for Exynos5420-based Insignal Arndale
Octa board. Octa board.
- "insignal,origen" - for Exynos4210-based Insignal Origen board. - "insignal,origen" - for Exynos4210-based Insignal Origen board.
- "insignal,origen4412 - for Exynos4412-based Insignal Origen board. - "insignal,origen4412" - for Exynos4412-based Insignal Origen board.
Optional nodes: Optional nodes:
......
...@@ -36,7 +36,7 @@ Optional nodes: ...@@ -36,7 +36,7 @@ Optional nodes:
- port/ports: to describe a connection to an external encoder. The - port/ports: to describe a connection to an external encoder. The
binding follows Documentation/devicetree/bindings/graph.txt and binding follows Documentation/devicetree/bindings/graph.txt and
suppors a single port with a single endpoint. supports a single port with a single endpoint.
- See also Documentation/devicetree/bindings/display/tilcdc/panel.txt and - See also Documentation/devicetree/bindings/display/tilcdc/panel.txt and
Documentation/devicetree/bindings/display/tilcdc/tfp410.txt for connecting Documentation/devicetree/bindings/display/tilcdc/tfp410.txt for connecting
......
...@@ -72,6 +72,8 @@ Optional properties: ...@@ -72,6 +72,8 @@ Optional properties:
- wp-gpios: GPIO to which the write-protect pin of the chip is connected. - wp-gpios: GPIO to which the write-protect pin of the chip is connected.
- address-width: number of address bits (one of 8, 16).
Example: Example:
eeprom@52 { eeprom@52 {
......
Nintendo Wii (Hollywood) GPIO controller Nintendo Wii (Hollywood) GPIO controller
Required properties: Required properties:
- compatible: "nintendo,hollywood-gpio - compatible: "nintendo,hollywood-gpio"
- reg: Physical base address and length of the controller's registers. - reg: Physical base address and length of the controller's registers.
- gpio-controller: Marks the device node as a GPIO controller. - gpio-controller: Marks the device node as a GPIO controller.
- #gpio-cells: Should be <2>. The first cell is the pin number and the - #gpio-cells: Should be <2>. The first cell is the pin number and the
......
...@@ -32,7 +32,7 @@ i2c@00000000 { ...@@ -32,7 +32,7 @@ i2c@00000000 {
reg = <0x6c>; reg = <0x6c>;
interrupt-parent = <&gpx1>; interrupt-parent = <&gpx1>;
interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
vdd-supply = <&ldo15_reg>"; vdd-supply = <&ldo15_reg>;
vid-supply = <&ldo18_reg>; vid-supply = <&ldo18_reg>;
reset-gpios = <&gpx1 5 0>; reset-gpios = <&gpx1 5 0>;
touchscreen-size-x = <1080>; touchscreen-size-x = <1080>;
......
...@@ -15,7 +15,7 @@ Required properties: ...@@ -15,7 +15,7 @@ Required properties:
include "nvidia,tegra30-ictlr". include "nvidia,tegra30-ictlr".
- reg : Specifies base physical address and size of the registers. - reg : Specifies base physical address and size of the registers.
Each controller must be described separately (Tegra20 has 4 of them, Each controller must be described separately (Tegra20 has 4 of them,
whereas Tegra30 and later have 5" whereas Tegra30 and later have 5).
- interrupt-controller : Identifies the node as an interrupt controller. - interrupt-controller : Identifies the node as an interrupt controller.
- #interrupt-cells : Specifies the number of cells needed to encode an - #interrupt-cells : Specifies the number of cells needed to encode an
interrupt source. The value must be 3. interrupt source. The value must be 3.
......
...@@ -12,7 +12,7 @@ Required properties: ...@@ -12,7 +12,7 @@ Required properties:
specifier, shall be 2 specifier, shall be 2
- interrupts: interrupts references to primary interrupt controller - interrupts: interrupts references to primary interrupt controller
(only needed for exti controller with multiple exti under (only needed for exti controller with multiple exti under
same parent interrupt: st,stm32-exti and st,stm32h7-exti") same parent interrupt: st,stm32-exti and st,stm32h7-exti)
Example: Example:
......
...@@ -152,7 +152,7 @@ Required properties: ...@@ -152,7 +152,7 @@ Required properties:
- compatible : should contain one of: - compatible : should contain one of:
"brcm,bcm7425-timers" "brcm,bcm7425-timers"
"brcm,bcm7429-timers" "brcm,bcm7429-timers"
"brcm,bcm7435-timers and "brcm,bcm7435-timers" and
"brcm,brcmstb-timers" "brcm,brcmstb-timers"
- reg : the timers register range - reg : the timers register range
- interrupts : the interrupt line for this timer block - interrupts : the interrupt line for this timer block
......
...@@ -238,7 +238,7 @@ PROPERTIES ...@@ -238,7 +238,7 @@ PROPERTIES
Must include one of the following: Must include one of the following:
- "fsl,fman-dtsec" for dTSEC MAC - "fsl,fman-dtsec" for dTSEC MAC
- "fsl,fman-xgec" for XGEC MAC - "fsl,fman-xgec" for XGEC MAC
- "fsl,fman-memac for mEMAC MAC - "fsl,fman-memac" for mEMAC MAC
- cell-index - cell-index
Usage: required Usage: required
......
...@@ -133,7 +133,7 @@ located inside a PM domain with index 0 of a power controller represented by a ...@@ -133,7 +133,7 @@ located inside a PM domain with index 0 of a power controller represented by a
node with the label "power". node with the label "power".
In the second example the consumer device are partitioned across two PM domains, In the second example the consumer device are partitioned across two PM domains,
the first with index 0 and the second with index 1, of a power controller that the first with index 0 and the second with index 1, of a power controller that
is represented by a node with the label "power. is represented by a node with the label "power".
Optional properties: Optional properties:
- required-opps: This contains phandle to an OPP node in another device's OPP - required-opps: This contains phandle to an OPP node in another device's OPP
......
...@@ -16,7 +16,7 @@ Required properties: ...@@ -16,7 +16,7 @@ Required properties:
Optional properties: Optional properties:
- ti,enable-ext-control: This is applicable for DCDC1, DCDC2 and DCDC3. - ti,enable-ext-control: This is applicable for DCDC1, DCDC2 and DCDC3.
If DCDCs are externally controlled then this property should be there. If DCDCs are externally controlled then this property should be there.
- "dcdc-ext-control-gpios: This is applicable for DCDC1, DCDC2 and DCDC3. - dcdc-ext-control-gpios: This is applicable for DCDC1, DCDC2 and DCDC3.
If DCDCs are externally controlled and if it is from GPIO then GPIO If DCDCs are externally controlled and if it is from GPIO then GPIO
number should be provided. If it is externally controlled and no GPIO number should be provided. If it is externally controlled and no GPIO
entry then driver will just configure this rails as external control entry then driver will just configure this rails as external control
......
...@@ -15,7 +15,7 @@ Please refer to reset.txt in this directory for common reset ...@@ -15,7 +15,7 @@ Please refer to reset.txt in this directory for common reset
controller binding usage. controller binding usage.
Required properties: Required properties:
- compatible: Should be st,stih407-softreset"; - compatible: Should be "st,stih407-softreset";
- #reset-cells: 1, see below - #reset-cells: 1, see below
example: example:
......
...@@ -39,7 +39,7 @@ Required properties: ...@@ -39,7 +39,7 @@ Required properties:
Optional property: Optional property:
- clock-frequency: Desired I2C bus clock frequency in Hz. - clock-frequency: Desired I2C bus clock frequency in Hz.
When missing default to 400000Hz. When missing default to 100000Hz.
Child nodes should conform to I2C bus binding as described in i2c.txt. Child nodes should conform to I2C bus binding as described in i2c.txt.
......
...@@ -30,7 +30,7 @@ Required properties: ...@@ -30,7 +30,7 @@ Required properties:
Board connectors: Board connectors:
* Headset Mic * Headset Mic
* Secondary Mic", * Secondary Mic
* DMIC * DMIC
* Ext Spk * Ext Spk
......
...@@ -35,7 +35,7 @@ This binding describes the APQ8096 sound card, which uses qdsp for audio. ...@@ -35,7 +35,7 @@ This binding describes the APQ8096 sound card, which uses qdsp for audio.
"Digital Mic3" "Digital Mic3"
Audio pins and MicBias on WCD9335 Codec: Audio pins and MicBias on WCD9335 Codec:
"MIC_BIAS1 "MIC_BIAS1"
"MIC_BIAS2" "MIC_BIAS2"
"MIC_BIAS3" "MIC_BIAS3"
"MIC_BIAS4" "MIC_BIAS4"
......
...@@ -15,7 +15,7 @@ Optional properties: ...@@ -15,7 +15,7 @@ Optional properties:
Examples: Examples:
onewire@0 { onewire {
compatible = "w1-gpio"; compatible = "w1-gpio";
gpios = <&gpio 126 0>, <&gpio 105 0>; gpios = <&gpio 126 0>, <&gpio 105 0>;
}; };
......
...@@ -1490,7 +1490,7 @@ To remove an ARP target: ...@@ -1490,7 +1490,7 @@ To remove an ARP target:
To configure the interval between learning packet transmits: To configure the interval between learning packet transmits:
# echo 12 > /sys/class/net/bond0/bonding/lp_interval # echo 12 > /sys/class/net/bond0/bonding/lp_interval
NOTE: the lp_inteval is the number of seconds between instances where NOTE: the lp_interval is the number of seconds between instances where
the bonding driver sends learning packets to each slaves peer switch. The the bonding driver sends learning packets to each slaves peer switch. The
default interval is 1 second. default interval is 1 second.
......
...@@ -47,41 +47,45 @@ Driver Configuration Parameters ...@@ -47,41 +47,45 @@ Driver Configuration Parameters
The default value for each parameter is generally the recommended setting, The default value for each parameter is generally the recommended setting,
unless otherwise noted. unless otherwise noted.
Rx Descriptors: Number of receive descriptors. A receive descriptor is a data Rx Descriptors:
Number of receive descriptors. A receive descriptor is a data
structure that describes a receive buffer and its attributes to the network structure that describes a receive buffer and its attributes to the network
controller. The data in the descriptor is used by the controller to write controller. The data in the descriptor is used by the controller to write
data from the controller to host memory. In the 3.x.x driver the valid range data from the controller to host memory. In the 3.x.x driver the valid range
for this parameter is 64-256. The default value is 256. This parameter can be for this parameter is 64-256. The default value is 256. This parameter can be
changed using the command:: changed using the command::
ethtool -G eth? rx n ethtool -G eth? rx n
Where n is the number of desired Rx descriptors. Where n is the number of desired Rx descriptors.
Tx Descriptors: Number of transmit descriptors. A transmit descriptor is a data Tx Descriptors:
Number of transmit descriptors. A transmit descriptor is a data
structure that describes a transmit buffer and its attributes to the network structure that describes a transmit buffer and its attributes to the network
controller. The data in the descriptor is used by the controller to read controller. The data in the descriptor is used by the controller to read
data from the host memory to the controller. In the 3.x.x driver the valid data from the host memory to the controller. In the 3.x.x driver the valid
range for this parameter is 64-256. The default value is 128. This parameter range for this parameter is 64-256. The default value is 128. This parameter
can be changed using the command:: can be changed using the command::
ethtool -G eth? tx n ethtool -G eth? tx n
Where n is the number of desired Tx descriptors. Where n is the number of desired Tx descriptors.
Speed/Duplex: The driver auto-negotiates the link speed and duplex settings by Speed/Duplex:
The driver auto-negotiates the link speed and duplex settings by
default. The ethtool utility can be used as follows to force speed/duplex.:: default. The ethtool utility can be used as follows to force speed/duplex.::
ethtool -s eth? autoneg off speed {10|100} duplex {full|half} ethtool -s eth? autoneg off speed {10|100} duplex {full|half}
NOTE: setting the speed/duplex to incorrect values will cause the link to NOTE: setting the speed/duplex to incorrect values will cause the link to
fail. fail.
Event Log Message Level: The driver uses the message level flag to log events Event Log Message Level:
The driver uses the message level flag to log events
to syslog. The message level can be set at driver load time. It can also be to syslog. The message level can be set at driver load time. It can also be
set using the command:: set using the command::
ethtool -s eth? msglvl n ethtool -s eth? msglvl n
Additional Configurations Additional Configurations
...@@ -92,7 +96,7 @@ Configuring the Driver on Different Distributions ...@@ -92,7 +96,7 @@ Configuring the Driver on Different Distributions
Configuring a network driver to load properly when the system is started Configuring a network driver to load properly when the system is started
is distribution dependent. Typically, the configuration process involves is distribution dependent. Typically, the configuration process involves
adding an alias line to /etc/modprobe.d/*.conf as well as editing other adding an alias line to `/etc/modprobe.d/*.conf` as well as editing other
system startup scripts and/or configuration files. Many popular Linux system startup scripts and/or configuration files. Many popular Linux
distributions ship with tools to make these changes for you. To learn distributions ship with tools to make these changes for you. To learn
the proper way to configure a network device for your system, refer to the proper way to configure a network device for your system, refer to
...@@ -160,7 +164,10 @@ This results in unbalanced receive traffic. ...@@ -160,7 +164,10 @@ This results in unbalanced receive traffic.
If you have multiple interfaces in a server, either turn on ARP If you have multiple interfaces in a server, either turn on ARP
filtering by filtering by
(1) entering:: echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter (1) entering::
echo 1 > /proc/sys/net/ipv4/conf/all/arp_filter
(this only works if your kernel's version is higher than 2.4.5), or (this only works if your kernel's version is higher than 2.4.5), or
(2) installing the interfaces in separate broadcast domains (either (2) installing the interfaces in separate broadcast domains (either
......
...@@ -34,7 +34,8 @@ Command Line Parameters ...@@ -34,7 +34,8 @@ Command Line Parameters
The default value for each parameter is generally the recommended setting, The default value for each parameter is generally the recommended setting,
unless otherwise noted. unless otherwise noted.
NOTES: For more information about the AutoNeg, Duplex, and Speed NOTES:
For more information about the AutoNeg, Duplex, and Speed
parameters, see the "Speed and Duplex Configuration" section in parameters, see the "Speed and Duplex Configuration" section in
this document. this document.
...@@ -45,22 +46,27 @@ NOTES: For more information about the AutoNeg, Duplex, and Speed ...@@ -45,22 +46,27 @@ NOTES: For more information about the AutoNeg, Duplex, and Speed
AutoNeg AutoNeg
------- -------
(Supported only on adapters with copper connections) (Supported only on adapters with copper connections)
Valid Range: 0x01-0x0F, 0x20-0x2F
Default Value: 0x2F :Valid Range: 0x01-0x0F, 0x20-0x2F
:Default Value: 0x2F
This parameter is a bit-mask that specifies the speed and duplex settings This parameter is a bit-mask that specifies the speed and duplex settings
advertised by the adapter. When this parameter is used, the Speed and advertised by the adapter. When this parameter is used, the Speed and
Duplex parameters must not be specified. Duplex parameters must not be specified.
NOTE: Refer to the Speed and Duplex section of this readme for more NOTE:
Refer to the Speed and Duplex section of this readme for more
information on the AutoNeg parameter. information on the AutoNeg parameter.
Duplex Duplex
------ ------
(Supported only on adapters with copper connections) (Supported only on adapters with copper connections)
Valid Range: 0-2 (0=auto-negotiate, 1=half, 2=full)
Default Value: 0 :Valid Range: 0-2 (0=auto-negotiate, 1=half, 2=full)
:Default Value: 0
This defines the direction in which data is allowed to flow. Can be This defines the direction in which data is allowed to flow. Can be
either one or two-directional. If both Duplex and the link partner are either one or two-directional. If both Duplex and the link partner are
...@@ -70,18 +76,22 @@ duplex. ...@@ -70,18 +76,22 @@ duplex.
FlowControl FlowControl
----------- -----------
Valid Range: 0-3 (0=none, 1=Rx only, 2=Tx only, 3=Rx&Tx)
Default Value: Reads flow control settings from the EEPROM :Valid Range: 0-3 (0=none, 1=Rx only, 2=Tx only, 3=Rx&Tx)
:Default Value: Reads flow control settings from the EEPROM
This parameter controls the automatic generation(Tx) and response(Rx) This parameter controls the automatic generation(Tx) and response(Rx)
to Ethernet PAUSE frames. to Ethernet PAUSE frames.
InterruptThrottleRate InterruptThrottleRate
--------------------- ---------------------
(not supported on Intel(R) 82542, 82543 or 82544-based adapters) (not supported on Intel(R) 82542, 82543 or 82544-based adapters)
Valid Range: 0,1,3,4,100-100000 (0=off, 1=dynamic, 3=dynamic conservative,
4=simplified balancing) :Valid Range:
Default Value: 3 0,1,3,4,100-100000 (0=off, 1=dynamic, 3=dynamic conservative,
4=simplified balancing)
:Default Value: 3
The driver can limit the amount of interrupts per second that the adapter The driver can limit the amount of interrupts per second that the adapter
will generate for incoming packets. It does this by writing a value to the will generate for incoming packets. It does this by writing a value to the
...@@ -135,13 +145,15 @@ Setting InterruptThrottleRate to 0 turns off any interrupt moderation ...@@ -135,13 +145,15 @@ Setting InterruptThrottleRate to 0 turns off any interrupt moderation
and may improve small packet latency, but is generally not suitable and may improve small packet latency, but is generally not suitable
for bulk throughput traffic. for bulk throughput traffic.
NOTE: InterruptThrottleRate takes precedence over the TxAbsIntDelay and NOTE:
InterruptThrottleRate takes precedence over the TxAbsIntDelay and
RxAbsIntDelay parameters. In other words, minimizing the receive RxAbsIntDelay parameters. In other words, minimizing the receive
and/or transmit absolute delays does not force the controller to and/or transmit absolute delays does not force the controller to
generate more interrupts than what the Interrupt Throttle Rate generate more interrupts than what the Interrupt Throttle Rate
allows. allows.
CAUTION: If you are using the Intel(R) PRO/1000 CT Network Connection CAUTION:
If you are using the Intel(R) PRO/1000 CT Network Connection
(controller 82547), setting InterruptThrottleRate to a value (controller 82547), setting InterruptThrottleRate to a value
greater than 75,000, may hang (stop transmitting) adapters greater than 75,000, may hang (stop transmitting) adapters
under certain network conditions. If this occurs a NETDEV under certain network conditions. If this occurs a NETDEV
...@@ -151,7 +163,8 @@ CAUTION: If you are using the Intel(R) PRO/1000 CT Network Connection ...@@ -151,7 +163,8 @@ CAUTION: If you are using the Intel(R) PRO/1000 CT Network Connection
hang, ensure that InterruptThrottleRate is set no greater hang, ensure that InterruptThrottleRate is set no greater
than 75,000 and is not set to 0. than 75,000 and is not set to 0.
NOTE: When e1000 is loaded with default settings and multiple adapters NOTE:
When e1000 is loaded with default settings and multiple adapters
are in use simultaneously, the CPU utilization may increase non- are in use simultaneously, the CPU utilization may increase non-
linearly. In order to limit the CPU utilization without impacting linearly. In order to limit the CPU utilization without impacting
the overall throughput, we recommend that you load the driver as the overall throughput, we recommend that you load the driver as
...@@ -168,9 +181,11 @@ NOTE: When e1000 is loaded with default settings and multiple adapters ...@@ -168,9 +181,11 @@ NOTE: When e1000 is loaded with default settings and multiple adapters
RxDescriptors RxDescriptors
------------- -------------
Valid Range: 48-256 for 82542 and 82543-based adapters
48-4096 for all other supported adapters :Valid Range:
Default Value: 256 - 48-256 for 82542 and 82543-based adapters
- 48-4096 for all other supported adapters
:Default Value: 256
This value specifies the number of receive buffer descriptors allocated This value specifies the number of receive buffer descriptors allocated
by the driver. Increasing this value allows the driver to buffer more by the driver. Increasing this value allows the driver to buffer more
...@@ -180,15 +195,17 @@ Each descriptor is 16 bytes. A receive buffer is also allocated for each ...@@ -180,15 +195,17 @@ Each descriptor is 16 bytes. A receive buffer is also allocated for each
descriptor and can be either 2048, 4096, 8192, or 16384 bytes, depending descriptor and can be either 2048, 4096, 8192, or 16384 bytes, depending
on the MTU setting. The maximum MTU size is 16110. on the MTU setting. The maximum MTU size is 16110.
NOTE: MTU designates the frame size. It only needs to be set for Jumbo NOTE:
MTU designates the frame size. It only needs to be set for Jumbo
Frames. Depending on the available system resources, the request Frames. Depending on the available system resources, the request
for a higher number of receive descriptors may be denied. In this for a higher number of receive descriptors may be denied. In this
case, use a lower number. case, use a lower number.
RxIntDelay RxIntDelay
---------- ----------
Valid Range: 0-65535 (0=off)
Default Value: 0 :Valid Range: 0-65535 (0=off)
:Default Value: 0
This value delays the generation of receive interrupts in units of 1.024 This value delays the generation of receive interrupts in units of 1.024
microseconds. Receive interrupt reduction can improve CPU efficiency if microseconds. Receive interrupt reduction can improve CPU efficiency if
...@@ -198,7 +215,8 @@ of TCP traffic. If the system is reporting dropped receives, this value ...@@ -198,7 +215,8 @@ of TCP traffic. If the system is reporting dropped receives, this value
may be set too high, causing the driver to run out of available receive may be set too high, causing the driver to run out of available receive
descriptors. descriptors.
CAUTION: When setting RxIntDelay to a value other than 0, adapters may CAUTION:
When setting RxIntDelay to a value other than 0, adapters may
hang (stop transmitting) under certain network conditions. If hang (stop transmitting) under certain network conditions. If
this occurs a NETDEV WATCHDOG message is logged in the system this occurs a NETDEV WATCHDOG message is logged in the system
event log. In addition, the controller is automatically reset, event log. In addition, the controller is automatically reset,
...@@ -207,9 +225,11 @@ CAUTION: When setting RxIntDelay to a value other than 0, adapters may ...@@ -207,9 +225,11 @@ CAUTION: When setting RxIntDelay to a value other than 0, adapters may
RxAbsIntDelay RxAbsIntDelay
------------- -------------
(This parameter is supported only on 82540, 82545 and later adapters.) (This parameter is supported only on 82540, 82545 and later adapters.)
Valid Range: 0-65535 (0=off)
Default Value: 128 :Valid Range: 0-65535 (0=off)
:Default Value: 128
This value, in units of 1.024 microseconds, limits the delay in which a This value, in units of 1.024 microseconds, limits the delay in which a
receive interrupt is generated. Useful only if RxIntDelay is non-zero, receive interrupt is generated. Useful only if RxIntDelay is non-zero,
...@@ -220,9 +240,11 @@ conditions. ...@@ -220,9 +240,11 @@ conditions.
Speed Speed
----- -----
(This parameter is supported only on adapters with copper connections.) (This parameter is supported only on adapters with copper connections.)
Valid Settings: 0, 10, 100, 1000
Default Value: 0 (auto-negotiate at all supported speeds) :Valid Settings: 0, 10, 100, 1000
:Default Value: 0 (auto-negotiate at all supported speeds)
Speed forces the line speed to the specified value in megabits per second Speed forces the line speed to the specified value in megabits per second
(Mbps). If this parameter is not specified or is set to 0 and the link (Mbps). If this parameter is not specified or is set to 0 and the link
...@@ -231,22 +253,26 @@ speed. Duplex should also be set when Speed is set to either 10 or 100. ...@@ -231,22 +253,26 @@ speed. Duplex should also be set when Speed is set to either 10 or 100.
TxDescriptors TxDescriptors
------------- -------------
Valid Range: 48-256 for 82542 and 82543-based adapters
48-4096 for all other supported adapters :Valid Range:
Default Value: 256 - 48-256 for 82542 and 82543-based adapters
- 48-4096 for all other supported adapters
:Default Value: 256
This value is the number of transmit descriptors allocated by the driver. This value is the number of transmit descriptors allocated by the driver.
Increasing this value allows the driver to queue more transmits. Each Increasing this value allows the driver to queue more transmits. Each
descriptor is 16 bytes. descriptor is 16 bytes.
NOTE: Depending on the available system resources, the request for a NOTE:
Depending on the available system resources, the request for a
higher number of transmit descriptors may be denied. In this case, higher number of transmit descriptors may be denied. In this case,
use a lower number. use a lower number.
TxIntDelay TxIntDelay
---------- ----------
Valid Range: 0-65535 (0=off)
Default Value: 8 :Valid Range: 0-65535 (0=off)
:Default Value: 8
This value delays the generation of transmit interrupts in units of This value delays the generation of transmit interrupts in units of
1.024 microseconds. Transmit interrupt reduction can improve CPU 1.024 microseconds. Transmit interrupt reduction can improve CPU
...@@ -256,9 +282,11 @@ causing the driver to run out of available transmit descriptors. ...@@ -256,9 +282,11 @@ causing the driver to run out of available transmit descriptors.
TxAbsIntDelay TxAbsIntDelay
------------- -------------
(This parameter is supported only on 82540, 82545 and later adapters.) (This parameter is supported only on 82540, 82545 and later adapters.)
Valid Range: 0-65535 (0=off)
Default Value: 32 :Valid Range: 0-65535 (0=off)
:Default Value: 32
This value, in units of 1.024 microseconds, limits the delay in which a This value, in units of 1.024 microseconds, limits the delay in which a
transmit interrupt is generated. Useful only if TxIntDelay is non-zero, transmit interrupt is generated. Useful only if TxIntDelay is non-zero,
...@@ -269,18 +297,21 @@ network conditions. ...@@ -269,18 +297,21 @@ network conditions.
XsumRX XsumRX
------ ------
(This parameter is NOT supported on the 82542-based adapter.) (This parameter is NOT supported on the 82542-based adapter.)
Valid Range: 0-1
Default Value: 1 :Valid Range: 0-1
:Default Value: 1
A value of '1' indicates that the driver should enable IP checksum A value of '1' indicates that the driver should enable IP checksum
offload for received packets (both UDP and TCP) to the adapter hardware. offload for received packets (both UDP and TCP) to the adapter hardware.
Copybreak Copybreak
--------- ---------
Valid Range: 0-xxxxxxx (0=off)
Default Value: 256 :Valid Range: 0-xxxxxxx (0=off)
Usage: modprobe e1000.ko copybreak=128 :Default Value: 256
:Usage: modprobe e1000.ko copybreak=128
Driver copies all packets below or equaling this size to a fresh RX Driver copies all packets below or equaling this size to a fresh RX
buffer before handing it up the stack. buffer before handing it up the stack.
...@@ -292,8 +323,9 @@ it is also available during runtime at ...@@ -292,8 +323,9 @@ it is also available during runtime at
SmartPowerDownEnable SmartPowerDownEnable
-------------------- --------------------
Valid Range: 0-1
Default Value: 0 (disabled) :Valid Range: 0-1
:Default Value: 0 (disabled)
Allows PHY to turn off in lower power states. The user can turn off Allows PHY to turn off in lower power states. The user can turn off
this parameter in supported chipsets. this parameter in supported chipsets.
...@@ -309,14 +341,14 @@ fiber interface board only links at 1000 Mbps full-duplex. ...@@ -309,14 +341,14 @@ fiber interface board only links at 1000 Mbps full-duplex.
For copper-based boards, the keywords interact as follows: For copper-based boards, the keywords interact as follows:
The default operation is auto-negotiate. The board advertises all - The default operation is auto-negotiate. The board advertises all
supported speed and duplex combinations, and it links at the highest supported speed and duplex combinations, and it links at the highest
common speed and duplex mode IF the link partner is set to auto-negotiate. common speed and duplex mode IF the link partner is set to auto-negotiate.
If Speed = 1000, limited auto-negotiation is enabled and only 1000 Mbps - If Speed = 1000, limited auto-negotiation is enabled and only 1000 Mbps
is advertised (The 1000BaseT spec requires auto-negotiation.) is advertised (The 1000BaseT spec requires auto-negotiation.)
If Speed = 10 or 100, then both Speed and Duplex should be set. Auto- - If Speed = 10 or 100, then both Speed and Duplex should be set. Auto-
negotiation is disabled, and the AutoNeg parameter is ignored. Partner negotiation is disabled, and the AutoNeg parameter is ignored. Partner
SHOULD also be forced. SHOULD also be forced.
...@@ -328,13 +360,15 @@ process. ...@@ -328,13 +360,15 @@ process.
The parameter may be specified as either a decimal or hexadecimal value as The parameter may be specified as either a decimal or hexadecimal value as
determined by the bitmap below. determined by the bitmap below.
============== ====== ====== ======= ======= ====== ====== ======= ======
Bit position 7 6 5 4 3 2 1 0 Bit position 7 6 5 4 3 2 1 0
Decimal Value 128 64 32 16 8 4 2 1 Decimal Value 128 64 32 16 8 4 2 1
Hex value 80 40 20 10 8 4 2 1 Hex value 80 40 20 10 8 4 2 1
Speed (Mbps) N/A N/A 1000 N/A 100 100 10 10 Speed (Mbps) N/A N/A 1000 N/A 100 100 10 10
Duplex Full Full Half Full Half Duplex Full Full Half Full Half
============== ====== ====== ======= ======= ====== ====== ======= ======
Some examples of using AutoNeg: Some examples of using AutoNeg::
modprobe e1000 AutoNeg=0x01 (Restricts autonegotiation to 10 Half) modprobe e1000 AutoNeg=0x01 (Restricts autonegotiation to 10 Half)
modprobe e1000 AutoNeg=1 (Same as above) modprobe e1000 AutoNeg=1 (Same as above)
...@@ -357,56 +391,59 @@ Additional Configurations ...@@ -357,56 +391,59 @@ Additional Configurations
Jumbo Frames Jumbo Frames
------------ ------------
Jumbo Frames support is enabled by changing the MTU to a value larger
than the default of 1500. Use the ifconfig command to increase the MTU Jumbo Frames support is enabled by changing the MTU to a value larger than
size. For example:: the default of 1500. Use the ifconfig command to increase the MTU size.
For example::
ifconfig eth<x> mtu 9000 up ifconfig eth<x> mtu 9000 up
This setting is not saved across reboots. It can be made permanent if This setting is not saved across reboots. It can be made permanent if
you add:: you add::
MTU=9000 MTU=9000
to the file /etc/sysconfig/network-scripts/ifcfg-eth<x>. This example to the file /etc/sysconfig/network-scripts/ifcfg-eth<x>. This example
applies to the Red Hat distributions; other distributions may store this applies to the Red Hat distributions; other distributions may store this
setting in a different location. setting in a different location.
Notes:
Degradation in throughput performance may be observed in some Jumbo frames
environments. If this is observed, increasing the application's socket buffer
size and/or increasing the /proc/sys/net/ipv4/tcp_*mem entry values may help.
See the specific application manual and /usr/src/linux*/Documentation/
networking/ip-sysctl.txt for more details.
Notes: Degradation in throughput performance may be observed in some - The maximum MTU setting for Jumbo Frames is 16110. This value coincides
Jumbo frames environments. If this is observed, increasing the with the maximum Jumbo Frames size of 16128.
application's socket buffer size and/or increasing the
/proc/sys/net/ipv4/tcp_*mem entry values may help. See the specific
application manual and /usr/src/linux*/Documentation/
networking/ip-sysctl.txt for more details.
- The maximum MTU setting for Jumbo Frames is 16110. This value - Using Jumbo frames at 10 or 100 Mbps is not supported and may result in
coincides with the maximum Jumbo Frames size of 16128. poor performance or loss of link.
- Using Jumbo frames at 10 or 100 Mbps is not supported and may result - Adapters based on the Intel(R) 82542 and 82573V/E controller do not
in poor performance or loss of link. support Jumbo Frames. These correspond to the following product names::
- Adapters based on the Intel(R) 82542 and 82573V/E controller do not Intel(R) PRO/1000 Gigabit Server Adapter
support Jumbo Frames. These correspond to the following product names: Intel(R) PRO/1000 PM Network Connection
Intel(R) PRO/1000 Gigabit Server Adapter Intel(R) PRO/1000 PM Network
Connection
ethtool ethtool
------- -------
The driver utilizes the ethtool interface for driver configuration and
diagnostics, as well as displaying statistical information. The ethtool
version 1.6 or later is required for this functionality.
The latest release of ethtool can be found from The driver utilizes the ethtool interface for driver configuration and
https://www.kernel.org/pub/software/network/ethtool/ diagnostics, as well as displaying statistical information. The ethtool
version 1.6 or later is required for this functionality.
The latest release of ethtool can be found from
https://www.kernel.org/pub/software/network/ethtool/
Enabling Wake on LAN* (WoL) Enabling Wake on LAN* (WoL)
--------------------------- ---------------------------
WoL is configured through the ethtool* utility.
WoL will be enabled on the system during the next shut down or reboot. WoL is configured through the ethtool* utility.
For this driver version, in order to enable WoL, the e1000 driver must be
loaded when shutting down or rebooting the system.
WoL will be enabled on the system during the next shut down or reboot.
For this driver version, in order to enable WoL, the e1000 driver must be
loaded when shutting down or rebooting the system.
Support Support
======= =======
......
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