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[mii] Add generic MII reset function

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iPXE provides no support for manually configuring the link speed.
Provide a generic routine which should be able to reset any MII/GMII
PHY and enable autonegotiation.

Prototyped-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2012-04-18 16:30:11 +01:00
parent d27e6d6efd
commit 9b2aabe534
3 changed files with 172 additions and 0 deletions
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1
src/include/ipxe/errfile.h
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@@ -141,6 +141,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#define ERRFILE_ath9k ( ERRFILE_DRIVER | 0x005f0000 )
#define ERRFILE_ath ( ERRFILE_DRIVER | 0x00600000 )
#define ERRFILE_vmxnet3 ( ERRFILE_DRIVER | 0x00610000 )
#define ERRFILE_mii ( ERRFILE_DRIVER | 0x00620000 )
#define ERRFILE_scsi ( ERRFILE_DRIVER | 0x00700000 )
#define ERRFILE_arbel ( ERRFILE_DRIVER | 0x00710000 )

86
src/include/ipxe/mii.h Normal file
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@@ -0,0 +1,86 @@
#ifndef _IPXE_MII_H
#define _IPXE_MII_H
/** @file
*
* Media Independent Interface
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <mii.h>
#include <ipxe/netdevice.h>
struct mii_interface;
/** MII interface operations */
struct mii_operations {
/**
* Read from MII register
*
* @v mii MII interface
* @v reg Register address
* @ret data Data read, or negative error
*/
int ( * read ) ( struct mii_interface *mii, unsigned int reg );
/**
* Write to MII register
*
* @v mii MII interface
* @v reg Register address
* @v data Data to write
* @ret rc Return status code
*/
int ( * write ) ( struct mii_interface *mii, unsigned int reg,
unsigned int data );
};
/** An MII interface */
struct mii_interface {
/** Interface operations */
struct mii_operations *op;
};
/**
* Initialise MII interface
*
* @v mii MII interface
* @v op MII interface operations
*/
static inline __attribute__ (( always_inline )) void
mii_init ( struct mii_interface *mii, struct mii_operations *op ) {
mii->op = op;
}
/**
* Read from MII register
*
* @v mii MII interface
* @v reg Register address
* @ret data Data read, or negative error
*/
static inline __attribute__ (( always_inline )) int
mii_read ( struct mii_interface *mii, unsigned int reg ) {
return mii->op->read ( mii, reg );
}
/**
* Write to MII register
*
* @v mii MII interface
* @v reg Register address
* @v data Data to write
* @ret rc Return status code
*/
static inline __attribute__ (( always_inline )) int
mii_write ( struct mii_interface *mii, unsigned int reg, unsigned int data ) {
return mii->op->write ( mii, reg, data );
}
/** Maximum time to wait for a reset, in milliseconds */
#define MII_RESET_MAX_WAIT_MS 500
extern int mii_reset ( struct mii_interface *mii );
#endif /* _IPXE_MII_H */