phy_read_mmd_indirect(9) [centos man page]

PHY_READ_MMD_INDIREC(9) 				      Network device support					   PHY_READ_MMD_INDIREC(9)

NAME

       phy_read_mmd_indirect - reads data from the MMD registers

SYNOPSIS

       int phy_read_mmd_indirect(struct mii_bus * bus, int prtad, int devad, int addr);

ARGUMENTS

       bus
	   the target MII bus

       prtad
	   MMD Address

       devad
	   MMD DEVAD

       addr
	   PHY address on the MII bus

DESCRIPTION

       it reads data from the MMD registers (clause 22 to access to clause 45) of the specified phy address.

TO READ THESE REGISTER WE HAVE

       1) Write reg 13 // DEVAD 2) Write reg 14 // MMD Address 3) Write reg 13 // MMD Data Command for MMD DEVAD 3) Read reg 14 // Read MMD data

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014						   PHY_READ_MMD_INDIREC(9)

PCI(3)							   BSD Library Functions Manual 						    PCI(3)

NAME

     pci -- library interface for PCI bus access

LIBRARY

     PCI Bus Access Library (libpci, -lpci)

SYNOPSIS

     #include <pci.h>

     int
     pcibus_conf_read(int pcifd, u_int bus, u_int dev, u_int func, u_int reg, pcireg_t *valp);

     int
     pcibus_conf_write(int pcifd, u_int bus, u_int dev, u_int func, u_int reg, pcireg_t val);

     int
     pcidev_conf_read(int devfd, u_int reg, pcireg_t *valp);

     int
     pcidev_conf_write(int devfd, u_int reg, pcireg_t val);

     char *
     pci_findvendor(pcireg_t id_reg);

     void
     pci_devinfo(pcireg_t id_reg, pcireg_t class_reg, char *devinfo, size_t len);

     void
     pci_conf_print(int pcifd, u_int bus, u_int dev, u_int func);

DESCRIPTION

     The pci library provides support for accessing the PCI bus by user programs.

     These functions are available in the libpci library.  Programs should be linked with -lpci.

CONFIGURATION SPACE FUNCTIONS

     The following functions are used to access PCI configuration space:

     pcibus_conf_read()
	   Access the PCI configuration register reg on the device located at bus, dev, func, and place the result in *valp.  pcifd must be an
	   open file descriptor to a PCI bus within the target PCI domain.

     pcibus_conf_write()
	   Write the value specified by val into the PCI configuration register reg on the device located at bus, dev, func.  pcifd must be an
	   open file descriptor to a PCI bus within the target PCI domain.

     pcidev_conf_read()
	   Access the PCI configuration register reg on the device associated with the open file descriptor devfd and place the result in *valp.

     pcidev_conf_write()
	   Write the value specified by val into the PCI configuration register reg on the device associated with the open file descriptor devfd.

MISCELLANEOUS FUNCTIONS

     The following miscellaneous functions are available:

     pci_findvendor()
	   Return an ASCII description of the PCI vendor in the PCI ID register id_reg.

     pci_devinfo()
	   Return an ASCII description of the PCI vendor, PCI product, and PCI class specified by the PCI ID register id_reg and PCI class ID reg-
	   ister class_reg.  The description is placed into the buffer pointed to by devinfo; the size of that buffer is specified in len.

     pci_conf_print()
	   Print the PCI configuration information for the device located at bus, dev, func.  pcifd must be an open file descriptor to a PCI bus
	   within the target PCI domain.

RETURN VALUES

     The pcibus_conf_read(), pcibus_conf_write(), pcidev_conf_read(), and pcidev_conf_write() functions return 0 on success and -1 on failure.

     The pci_findvendor() function returns NULL if the PCI vendor description cannot be found.

SEE ALSO

     pci(4)

HISTORY

     The pcibus_conf_read(), pcibus_conf_write(), pcidev_conf_read(), pcidev_conf_write(), pci_findvendor(), pci_devinfo(), and pci_conf_print()
     functions first appeared in NetBSD 1.6.

BSD
								  April 24, 2004							       BSD