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/Linux-v5.4/Documentation/networking/device_drivers/3com/
D3c509.txt25 3c509B (later revision of the ISA card; supports full-duplex)
27 3c589B (later revision of the 3c589; supports full-duplex)
42 needed except to enable full-duplex mode (see below). An example of the syntax
57 (2) Full-duplex mode
59 The v1.18c driver added support for the 3c509B's full-duplex capabilities.
60 In order to enable and successfully use full-duplex mode, three conditions
64 duplex operations. Currently, the only members of the 3c509 family that are
65 positively known to support full-duplex are the 3c509B (ISA bus) and 3c589B
67 full-duplex mode; these include the original 3c509 (no "B"), the original
72 AUI and 10base2 network cabling is physically incapable of full-duplex
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Dvortex.txt118 0x0200 Force full duplex mode.
125 will force full-duplex 100base-TX, rather than allowing the usual
137 full-duplex mode. Please use this in preference to the `options'
145 Sets full duplex mode for all 3c59x NICs in the machine. Entries
155 full duplex mode.
265 the same network being in full-duplex mode, while this host is in
266 half-duplex mode. You need to find that other host and make it run in
267 half-duplex mode or fix this host to run in full-duplex mode.
269 As a last resort, you can force the 3c59x driver into full-duplex mode
336 100" and "duplex full" as well (or "speed 10" and "duplex half").
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/Linux-v5.4/sound/core/seq/
Dseq_dummy.c39 The model option "duplex=1" enables duplex operation to the port.
40 In duplex mode, a pair of ports are created instead of single port,
43 In duplex mode, each port has DUPLEX capability.
54 static bool duplex; variable
58 module_param(duplex, bool, 0444);
59 MODULE_PARM_DESC(duplex, "create DUPLEX ports");
64 int duplex; member
85 if (p->duplex) in dummy_input()
116 rec->duplex = duplex; in create_port()
120 if (duplex) in create_port()
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/Linux-v5.4/include/uapi/linux/
Dmii.h44 #define BMCR_FULLDPLX 0x0100 /* Full duplex */
65 #define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */
66 #define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */
67 #define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */
68 #define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */
74 #define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */
75 #define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */
76 #define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */
77 #define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */
78 #define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */
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/Linux-v5.4/Documentation/networking/device_drivers/ti/
Dtlan.txt63 3. You can set duplex=1 to force half duplex, and duplex=2 to
64 force full duplex.
71 5. You have to use speed=X duplex=Y together now. If you just
73 To force a 10Mbps Half-Duplex link do "insmod tlan.o speed=10
74 duplex=1".
88 0x02 = use half duplex
89 0x04 = use full duplex
93 You also need to set both speed and duplex settings when forcing
95 ether=0,0,0x12,0,eth0 will force link to 100Mbps Half-Duplex.
101 insmod tlan speed=0,100 duplex=0,1
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/Linux-v5.4/drivers/net/ethernet/oki-semi/pch_gbe/
Dpch_gbe_param.c48 * Duplex - User Specified Duplex Override
50 * - 0: auto-negotiate for duplex
51 * - 1: only link at half duplex
52 * - 2: only link at full duplex
55 static int Duplex = OPTION_UNSET; variable
56 module_param(Duplex, int, 0);
57 MODULE_PARM_DESC(Duplex, "Duplex setting");
66 * The AutoNeg value is a bit mask describing which speed and duplex
68 * The supported speed and duplex modes are listed below
72 * Duplex Full Full Half Full Half
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/Linux-v5.4/drivers/net/
Dmii.c109 ecmd->duplex = !!(nego & ADVERTISED_1000baseT_Full); in mii_ethtool_gset()
113 ecmd->duplex = !!(nego & ADVERTISED_100baseT_Full); in mii_ethtool_gset()
116 ecmd->duplex = !!(nego & ADVERTISED_10baseT_Full); in mii_ethtool_gset()
127 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF; in mii_ethtool_gset()
130 mii->full_duplex = ecmd->duplex; in mii_ethtool_gset()
195 cmd->base.duplex = !!(nego & ADVERTISED_1000baseT_Full); in mii_ethtool_get_link_ksettings()
199 cmd->base.duplex = !!(nego & ADVERTISED_100baseT_Full); in mii_ethtool_get_link_ksettings()
202 cmd->base.duplex = !!(nego & ADVERTISED_10baseT_Full); in mii_ethtool_get_link_ksettings()
212 cmd->base.duplex = (bmcr & BMCR_FULLDPLX) ? in mii_ethtool_get_link_ksettings()
218 mii->full_duplex = cmd->base.duplex; in mii_ethtool_get_link_ksettings()
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Dsungem_phy.c42 { 0, 0, 0 }, /* 10BT Half Duplex */
43 { 1, 0, 0 }, /* 10BT Full Duplex */
44 { 0, 1, 0 }, /* 100BT Half Duplex */
45 { 0, 1, 0 }, /* 100BT Half Duplex */
46 { 1, 1, 0 }, /* 100BT Full Duplex*/
196 /* Configure for gigabit full duplex */ in bcm5400_init()
260 /* Configure for gigabit full duplex */ in bcm5401_init()
320 phy->duplex = DUPLEX_HALF; in genmii_setup_aneg()
351 phy->duplex = fd; in genmii_setup_forced()
360 /* Select speed & duplex */ in genmii_setup_forced()
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/Linux-v5.4/drivers/net/ethernet/stmicro/stmmac/
Daltr_tse_pcs.c133 u16 duplex = 0; in auto_nego_timer_callback() local
144 duplex = val & TSE_PCS_PARTNER_DUPLEX_MASK; in auto_nego_timer_callback()
147 duplex == TSE_PCS_PARTNER_DUPLEX_FULL) in auto_nego_timer_callback()
151 duplex == TSE_PCS_PARTNER_DUPLEX_FULL) in auto_nego_timer_callback()
155 duplex == TSE_PCS_PARTNER_DUPLEX_FULL) in auto_nego_timer_callback()
159 duplex == TSE_PCS_PARTNER_DUPLEX_HALF) in auto_nego_timer_callback()
161 "Adapter does not support Half Duplex\n"); in auto_nego_timer_callback()
163 duplex == TSE_PCS_PARTNER_DUPLEX_HALF) in auto_nego_timer_callback()
165 "Adapter does not support Half Duplex\n"); in auto_nego_timer_callback()
167 duplex == TSE_PCS_PARTNER_DUPLEX_HALF) in auto_nego_timer_callback()
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/Linux-v5.4/Documentation/networking/device_drivers/intel/
De1000.rst15 - Speed and Duplex Configuration
40 For more information about the AutoNeg, Duplex, and Speed
41 parameters, see the "Speed and Duplex Configuration" section in
57 This parameter is a bit-mask that specifies the speed and duplex settings
59 Duplex parameters must not be specified.
62 Refer to the Speed and Duplex section of this readme for more
65 Duplex section in Command Line Parameters
74 either one or two-directional. If both Duplex and the link partner are
75 set to auto-negotiate, the board auto-detects the correct duplex. If the
76 link partner is forced (either full or half), Duplex defaults to half-
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/Linux-v5.4/drivers/net/ethernet/intel/e1000/
De1000_param.c58 /* User Specified Duplex Override
61 * - 0 - auto-negotiate for duplex
62 * - 1 - only link at half duplex
63 * - 2 - only link at full duplex
67 E1000_PARAM(Duplex, "Duplex setting");
73 * The AutoNeg value is a bit mask describing which speed and duplex
75 * The supported speed and duplex modes are listed below
79 * Duplex Full Full Half Full Half
510 * Handles speed and duplex options on fiber adapters
521 e_dev_info("Duplex not valid for fiber adapters, parameter " in e1000_check_fiber_options()
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/Linux-v5.4/drivers/net/ethernet/atheros/atlx/
Datlx.h228 /* MAC Half-Duplex Control Register */
303 #define MII_CR_FULL_DUPLEX 0x0100 /* FDX =1, half duplex =0 */
327 #define MII_SR_100T2_HD_CAPS 0x0200 /* 100T2 Half Duplex Capable */
328 #define MII_SR_100T2_FD_CAPS 0x0400 /* 100T2 Full Duplex Capable */
329 #define MII_SR_10T_HD_CAPS 0x0800 /* 10T Half Duplex Capable */
330 #define MII_SR_10T_FD_CAPS 0x1000 /* 10T Full Duplex Capable */
331 #define MII_SR_100X_HD_CAPS 0x2000 /* 100X Half Duplex Capable */
332 #define MII_SR_100X_FD_CAPS 0x4000 /* 100X Full Duplex Capable */
337 #define MII_LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */
338 #define MII_LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */
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/Linux-v5.4/drivers/net/phy/
Dswphy.c38 * This means the speed table must contain both duplex settings, and the
39 * duplex table must contain all speed settings.
56 static const struct swmii_regs duplex[] = { variable
130 duplex_index = state->duplex ? SWMII_DUPLEX_FULL : SWMII_DUPLEX_HALF; in swphy_read_reg()
132 bmsr |= speed[speed_index].bmsr & duplex[duplex_index].bmsr; in swphy_read_reg()
133 estat |= speed[speed_index].estat & duplex[duplex_index].estat; in swphy_read_reg()
138 lpa |= speed[speed_index].lpa & duplex[duplex_index].lpa; in swphy_read_reg()
139 lpagb |= speed[speed_index].lpagb & duplex[duplex_index].lpagb; in swphy_read_reg()
Dphy.c100 phy_duplex_to_str(phydev->duplex), in phy_print_status()
183 * @duplex: desired duplex
187 * - an exact match for the specified speed and duplex mode
194 phy_find_valid(int speed, int duplex, unsigned long *supported) in phy_find_valid() argument
196 return phy_lookup_setting(speed, duplex, supported, false); in phy_find_valid()
218 * speed, duplex, and feature mask
220 * @duplex: duplex to match
225 static inline bool phy_check_valid(int speed, int duplex, in phy_check_valid() argument
228 return !!phy_lookup_setting(speed, duplex, features, true); in phy_check_valid()
232 * phy_sanitize_settings - make sure the PHY is set to supported speed and duplex
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Dphy-core.c53 const char *phy_duplex_to_str(unsigned int duplex) in phy_duplex_to_str() argument
55 if (duplex == DUPLEX_HALF) in phy_duplex_to_str()
57 if (duplex == DUPLEX_FULL) in phy_duplex_to_str()
59 if (duplex == DUPLEX_UNKNOWN) in phy_duplex_to_str()
65 /* A mapping of all SUPPORTED settings to speed/duplex. This table
69 #define PHY_SETTING(s, d, b) { .speed = SPEED_ ## s, .duplex = DUPLEX_ ## d, \
149 * @duplex: duplex to match
154 * duplex, and which is supported.
164 phy_lookup_setting(int speed, int duplex, const unsigned long *mask, bool exact) in phy_lookup_setting() argument
173 if (p->speed == speed && p->duplex == duplex) { in phy_lookup_setting()
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/Linux-v5.4/Documentation/networking/device_drivers/dlink/
Ddl2k.txt188 10mbps_hd 10Mbps half duplex.
189 10mbps_fd 10Mbps full duplex.
190 100mbps_hd 100Mbps half duplex.
191 100mbps_fd 100Mbps full duplex.
192 1000mbps_fd 1000Mbps full duplex.
193 1000mbps_hd 1000Mbps half duplex.
195 1 10Mbps half duplex.
196 2 10Mbps full duplex.
197 3 100Mbps half duplex.
198 4 100Mbps full duplex.
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/Linux-v5.4/Documentation/spi/
Dspidev.rst5 SPI devices have a limited userspace API, supporting basic half-duplex
7 full duplex transfers and device I/O configuration are also available.
84 Standard read() and write() operations are obviously only half-duplex, and
85 the chipselect is deactivated between those operations. Full-duplex access,
146 FULL DUPLEX CHARACTER DEVICE API
150 full duplex programming interface. (Although it doesn't perform a full duplex
155 The example shows one half-duplex RPC-style request and response message.
162 To make a full duplex request, provide both rx_buf and tx_buf for the
/Linux-v5.4/include/linux/
Dphylink.h39 * @duplex: link duplex mode, one of DUPLEX_* constants.
50 int duplex; member
112 * clearing unsupported speeds and duplex settings. The port modes
135 * speed in @state->speed, duplex mode in @state->duplex, pause mode
157 * Configure the specified @state->speed, @state->duplex and
162 * Valid state members: interface, speed, duplex, pause, advertising.
173 * @state->interface. Duplex is negotiated, and pause is advertised
176 * duplex at gigabit and higher speeds.
178 * If in Cisco SGMII mode, the link speed and duplex mode are passed
/Linux-v5.4/drivers/net/ethernet/intel/igc/
Digc_mac.c365 * to get the current speed/duplex if link exists.
384 * link. If so, then we want to get the current speed/duplex in igc_check_for_copper_link()
401 /* If we are forcing speed/duplex, then we simply return since in igc_check_for_copper_link()
410 * of MAC speed/duplex configuration. So we only need to in igc_check_for_copper_link()
454 * speed and duplex were not forced. If the link needed to be forced, then
463 u16 speed, duplex; in igc_config_fc_after_link_up() local
627 * negotiated to HALF DUPLEX, flow control should not be in igc_config_fc_after_link_up()
630 ret_val = hw->mac.ops.get_speed_and_duplex(hw, &speed, &duplex); in igc_config_fc_after_link_up()
632 hw_dbg("Error getting link speed and duplex\n"); in igc_config_fc_after_link_up()
636 if (duplex == HALF_DUPLEX) in igc_config_fc_after_link_up()
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Digc_phy.c269 /* Do we want to advertise 10 Mb Half Duplex? */ in igc_phy_setup_autoneg()
271 hw_dbg("Advertise 10mb Half duplex\n"); in igc_phy_setup_autoneg()
275 /* Do we want to advertise 10 Mb Full Duplex? */ in igc_phy_setup_autoneg()
277 hw_dbg("Advertise 10mb Full duplex\n"); in igc_phy_setup_autoneg()
281 /* Do we want to advertise 100 Mb Half Duplex? */ in igc_phy_setup_autoneg()
283 hw_dbg("Advertise 100mb Half duplex\n"); in igc_phy_setup_autoneg()
287 /* Do we want to advertise 100 Mb Full Duplex? */ in igc_phy_setup_autoneg()
289 hw_dbg("Advertise 100mb Full duplex\n"); in igc_phy_setup_autoneg()
293 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ in igc_phy_setup_autoneg()
295 hw_dbg("Advertise 1000mb Half duplex request denied!\n"); in igc_phy_setup_autoneg()
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/Linux-v5.4/drivers/net/ethernet/ibm/ehea/
Dehea_ethtool.c51 cmd->base.duplex = port->full_duplex == 1 ? in ehea_get_link_ksettings()
55 cmd->base.duplex = DUPLEX_UNKNOWN; in ehea_get_link_ksettings()
98 if (cmd->base.duplex == DUPLEX_FULL) in ehea_set_link_ksettings()
105 if (cmd->base.duplex == DUPLEX_FULL) in ehea_set_link_ksettings()
112 if (cmd->base.duplex == DUPLEX_FULL) in ehea_set_link_ksettings()
119 if (cmd->base.duplex == DUPLEX_FULL) in ehea_set_link_ksettings()
137 "Port speed successfully set: %dMbps %s Duplex\n", in ehea_set_link_ksettings()
153 "Port speed successfully set: %dMbps %s Duplex\n", in ehea_nway_reset()
/Linux-v5.4/Documentation/devicetree/bindings/net/dsa/
Ddsa.txt112 full-duplex;
121 full-duplex;
165 full-duplex;
175 full-duplex;
228 full-duplex;
239 full-duplex;
252 full-duplex;
/Linux-v5.4/Documentation/devicetree/bindings/phy/
Dphy-ocelot-serdes.txt13 half/full-duplex and 1000Mbps in full-duplex mode while SERDES6G supports
14 10/100Mbps in half/full-duplex and 1000/2500Mbps in full-duplex mode.
/Linux-v5.4/Documentation/devicetree/bindings/net/
Dethernet-controller.yaml159 Duplex configuration. 0 for half duplex or 1 for
160 full duplex
187 full-duplex:
190 Indicates that full-duplex is used. When absent, half
191 duplex is assumed.
/Linux-v5.4/drivers/net/ethernet/dec/tulip/
Dde4x5.h30 #define DE4X5_FDR iobase+(0x058 << lp->bus) /* Full Duplex Register */
288 #define STS_FD 0x00000800 /* Full-Duplex Short Frame Received */
348 #define OMR_FDX 0x00000200 /* Full Duplex Mode */
380 #define IMR_FDM 0x00000800 /* Full-Duplex (Short Frame) Mask */
476 #define MII_CR_FDM 0x0100 /* Full Duplex Mode */
483 #define MII_SR_TXFD 0x4000 /* 100BASE-TX Full Duplex capable */
484 #define MII_SR_TXHD 0x2000 /* 100BASE-TX Half Duplex capable */
485 #define MII_SR_TFD 0x1000 /* 10BASE-T Full Duplex capable */
486 #define MII_SR_THD 0x0800 /* 10BASE-T Half Duplex capable */
500 #define MII_ANA_FDAM 0x0140 /* Full Duplex Technology Ability Mask */
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