82583V Datasheet, PDF (220/374 Pages) Intel Corporation – Intel® 82583V GbE Controller

82583V GbE Controller—Driver Programing Interface
9.2.3.10 3GIO Statistic Counter Registers #3- GSCN_3 (0x05B2C; RW)
9.2.3.11 Software Semaphore Register - SWSM (0x05B50; RW)
9.2.3.12
Field
SMBI
SWESMBI
Reserved
Reserved
Reserved
Bit(s)
0
1
2
3
31:4
Initial
Value
1b
0b
0b
0b
0x0
Description
This bit is set by hardware when this register is read by the software
device driver and cleared when the host driver writes 0b to it.
The first time this register is read, the value is 0b. In the next read,
the value is 1b (hardware mechanism). The value remains 1b until the
software device driver clears it.
Note: This bit is typically used by multiple software threads when a
device has multiple LAN functions. Since the 82583V is a single port
device it is typically not needed. However, if there are multiple
software threads of execution accessing the 82583V it could be used
as part of a software thread semaphore mechanism.
Software EEPROM Semaphore Bit
This bit should be set only by the software device driver (read only to
firmware).
Note: This bit should not be used in the 82583V. Instead, the
EXTCNF_CTRL.MDIO/NVW SW Ownership bit should be used when the
software device driver needs to access the PHY or NVM (see
Section 4.6.2).
Hardware clears this bit on GIO soft reset.
Reserved
Reserved
Reserved
3GPIO Control Register 2 - GCR2 (0x05B64; RW)
Field
Reserved
Reserved
Bit(s)
31:1
0
Initial
Value
0x0
0b
Description
Reserved
Reserved. Must be set to 1b by software during initialization.
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