MPT_GETSCSIPORTSETTI(9) Message-based devices MPT_GETSCSIPORTSETTI(9)NAME
mpt_GetScsiPortSettings - read SCSI Port Page 0 and 2
int mpt_GetScsiPortSettings(MPT_ADAPTER * ioc, int portnum);
Pointer to a Adapter Strucutre
IOC port number
RETURN -EFAULT if read of config page header fails or if no nvram If read of SCSI Port Page 0 fails, NVRAM = MPT_HOST_NVRAM_INVALID (0xFFFFFFFF)
async, narrow Return 1 If read of SCSI Port Page 2 fails, Adapter settings valid NVRAM = MPT_HOST_NVRAM_INVALID (0xFFFFFFFF) Return 1 Else
Both valid Return 0 CHECK - what type of locking mechanisms should be used????
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 MPT_GETSCSIPORTSETTI(9)
Check Out this Related Man Page
NVRAM(4) BSD Kernel Interfaces Manual NVRAM(4)NAME
nvram -- non-volatile RAM
To compile this driver into the kernel, place the following line in your kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
The nvram driver provides access to BIOS configuration NVRAM on i386 and amd64 systems.
PC motherboard uses a small non-volatile memory to store BIOS settings which is usually part of its clock chip and sometimes referred as
``CMOS SRAM''. This driver exposes bytes 14 through 128 of the NVRAM, or a total of 114 bytes, at offset zero of the device file /dev/nvram.
This driver is useful for cloning machines that shares the same hardware configuration and need same BIOS setting tweaks.
The BIOS NVRAM's bytes 16 through 31 are checksummed at byte 32. This driver does not take care for these checksums.
Backup existing BIOS NVRAM to nvram.bin:
dd if=/dev/nvram of=nvram.bin
Restore BIOS NVRAM from nvram.bin:
dd if=nvram.bin of=/dev/nvram
SEE ALSO dd(1)HISTORY
The nvram device driver first appeared in FreeBSD 6.4.
The nvram device driver was written by Peter Wemm. This manual page was written by Xin LI.
BSD February 8, 2010 BSD
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