/*
* ( C ) Copyright 2003
* Ingo Assmus < ingo . assmus @ keymile . com >
*
* based on - Driver for MV64460X ethernet ports
* Copyright ( C ) 2002 rabeeh @ galileo . co . il
*
* See file CREDITS for list of people who contributed to this
* project .
*
* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation ; either version 2 of
* the License , or ( at your option ) any later version .
*
* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
*
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
* Foundation , Inc . , 59 Temple Place , Suite 330 , Boston ,
* MA 02111 - 1307 USA
*/
/*
* mv_eth . c - header file for the polled mode GT ethernet driver
*/
# include <common.h>
# include <net.h>
# include <malloc.h>
# include "mv_eth.h"
/* enable Debug outputs */
# undef DEBUG_MV_ETH
# ifdef DEBUG_MV_ETH
# define DEBUG
# define DP(x) x
# else
# define DP(x)
# endif
# undef MV64460_CHECKSUM_OFFLOAD
/*************************************************************************
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* The first part is the high level driver of the gigE ethernet ports . *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* Definition for configuring driver */
/* #define UPDATE_STATS_BY_SOFTWARE */
# undef MV64460_RX_QUEUE_FILL_ON_TASK
/* Constants */
# define MAGIC_ETH_RUNNING 8031971
# define MV64460_INTERNAL_SRAM_SIZE _256K
# define EXTRA_BYTES 32
# define WRAP ETH_HLEN + 2 + 4 + 16
# define BUFFER_MTU dev->mtu + WRAP
# define INT_CAUSE_UNMASK_ALL 0x0007ffff
# define INT_CAUSE_UNMASK_ALL_EXT 0x0011ffff
# ifdef MV64460_RX_FILL_ON_TASK
# define INT_CAUSE_MASK_ALL 0x00000000
# define INT_CAUSE_CHECK_BITS INT_CAUSE_UNMASK_ALL
# define INT_CAUSE_CHECK_BITS_EXT INT_CAUSE_UNMASK_ALL_EXT
# endif
/* Read/Write to/from MV64460 internal registers */
# define MV_REG_READ(offset) my_le32_to_cpu(* (volatile unsigned int *) (INTERNAL_REG_BASE_ADDR + offset))
# define MV_REG_WRITE(offset,data) *(volatile unsigned int *) (INTERNAL_REG_BASE_ADDR + offset) = my_cpu_to_le32 (data)
# define MV_SET_REG_BITS(regOffset,bits) ((*((volatile unsigned int*)((INTERNAL_REG_BASE_ADDR) + (regOffset)))) |= ((unsigned int)my_cpu_to_le32(bits)))
# define MV_RESET_REG_BITS(regOffset,bits) ((*((volatile unsigned int*)((INTERNAL_REG_BASE_ADDR) + (regOffset)))) &= ~((unsigned int)my_cpu_to_le32(bits)))
/* Static function declarations */
static int mv64460_eth_real_open ( struct eth_device * eth ) ;
static int mv64460_eth_real_stop ( struct eth_device * eth ) ;
static struct net_device_stats * mv64460_eth_get_stats ( struct eth_device
* dev ) ;
static void eth_port_init_mac_tables ( ETH_PORT eth_port_num ) ;
static void mv64460_eth_update_stat ( struct eth_device * dev ) ;
bool db64460_eth_start ( struct eth_device * eth ) ;
unsigned int eth_read_mib_counter ( ETH_PORT eth_port_num ,
unsigned int mib_offset ) ;
int mv64460_eth_receive ( struct eth_device * dev ) ;
int mv64460_eth_xmit ( struct eth_device * , volatile void * packet , int length ) ;
# ifndef UPDATE_STATS_BY_SOFTWARE
static void mv64460_eth_print_stat ( struct eth_device * dev ) ;
# endif
/* Processes a received packet */
extern void NetReceive ( volatile uchar * , int ) ;
extern unsigned int INTERNAL_REG_BASE_ADDR ;
/*************************************************
* Helper functions - used inside the driver only *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
# ifdef DEBUG_MV_ETH
void print_globals ( struct eth_device * dev )
{
printf ( " Ethernet PRINT_Globals-Debug function \n " ) ;
printf ( " Base Address for ETH_PORT_INFO: %08x \n " ,
( unsigned int ) dev - > priv ) ;
printf ( " Base Address for mv64460_eth_priv: %08x \n " ,
( unsigned int ) & ( ( ( ETH_PORT_INFO * ) dev - > priv ) - >
port_private ) ) ;
printf ( " GT Internal Base Address: %08x \n " ,
INTERNAL_REG_BASE_ADDR ) ;
printf ( " Base Address for TX-DESCs: %08x Number of allocated Buffers %d \n " , ( unsigned int ) ( ( ETH_PORT_INFO * ) dev - > priv ) - > p_tx_desc_area_base [ 0 ] , MV64460_TX_QUEUE_SIZE ) ;
printf ( " Base Address for RX-DESCs: %08x Number of allocated Buffers %d \n " , ( unsigned int ) ( ( ETH_PORT_INFO * ) dev - > priv ) - > p_rx_desc_area_base [ 0 ] , MV64460_RX_QUEUE_SIZE ) ;
printf ( " Base Address for RX-Buffer: %08x allocated Bytes %d \n " ,
( unsigned int ) ( ( ETH_PORT_INFO * ) dev - > priv ) - >
p_rx_buffer_base [ 0 ] ,
( MV64460_RX_QUEUE_SIZE * MV64460_RX_BUFFER_SIZE ) + 32 ) ;
printf ( " Base Address for TX-Buffer: %08x allocated Bytes %d \n " ,
( unsigned int ) ( ( ETH_PORT_INFO * ) dev - > priv ) - >
p_tx_buffer_base [ 0 ] ,
( MV64460_TX_QUEUE_SIZE * MV64460_TX_BUFFER_SIZE ) + 32 ) ;
}
# endif
# define my_cpu_to_le32(x) my_le32_to_cpu((x))
unsigned long my_le32_to_cpu ( unsigned long x )
{
return ( ( ( x & 0x000000ffU ) < < 24 ) |
( ( x & 0x0000ff00U ) < < 8 ) |
( ( x & 0x00ff0000U ) > > 8 ) | ( ( x & 0xff000000U ) > > 24 ) ) ;
}
/**********************************************************************
* mv64460_eth_print_phy_status
*
* Prints gigabit ethenret phy status
*
* Input : pointer to ethernet interface network device structure
* Output : N / A
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void mv64460_eth_print_phy_status ( struct eth_device * dev )
{
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
ETH_PORT_INFO * ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
unsigned int port_status , phy_reg_data ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
/* Check Link status on phy */
eth_port_read_smi_reg ( port_num , 1 , & phy_reg_data ) ;
if ( ! ( phy_reg_data & 0x20 ) ) {
printf ( " Ethernet port changed link status to DOWN \n " ) ;
} else {
port_status =
MV_REG_READ ( MV64460_ETH_PORT_STATUS_REG ( port_num ) ) ;
printf ( " Ethernet status port %d: Link up " , port_num ) ;
printf ( " , %s " ,
( port_status & BIT2 ) ? " Full Duplex " : " Half Duplex " ) ;
if ( port_status & BIT4 )
printf ( " , Speed 1 Gbps " ) ;
else
printf ( " , %s " ,
( port_status & BIT5 ) ? " Speed 100 Mbps " :
" Speed 10 Mbps " ) ;
printf ( " \n " ) ;
}
}
/**********************************************************************
* u - boot entry functions for mv64460_eth
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
int db64460_eth_probe ( struct eth_device * dev )
{
return ( ( int ) db64460_eth_start ( dev ) ) ;
}
int db64460_eth_poll ( struct eth_device * dev )
{
return mv64460_eth_receive ( dev ) ;
}
int db64460_eth_transmit ( struct eth_device * dev , volatile void * packet ,
int length )
{
mv64460_eth_xmit ( dev , packet , length ) ;
return 0 ;
}
void db64460_eth_disable ( struct eth_device * dev )
{
mv64460_eth_stop ( dev ) ;
}
void mv6446x_eth_initialize ( bd_t * bis )
{
struct eth_device * dev ;
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
int devnum , x , temp ;
char * s , * e , buf [ 64 ] ;
for ( devnum = 0 ; devnum < MV_ETH_DEVS ; devnum + + ) {
dev = calloc ( sizeof ( * dev ) , 1 ) ;
if ( ! dev ) {
printf ( " %s: mv_enet%d allocation failure, %s \n " ,
__FUNCTION__ , devnum , " eth_device structure " ) ;
return ;
}
/* must be less than NAMESIZE (16) */
sprintf ( dev - > name , " mv_enet%d " , devnum ) ;
# ifdef DEBUG
printf ( " Initializing %s \n " , dev - > name ) ;
# endif
/* Extract the MAC address from the environment */
switch ( devnum ) {
case 0 :
s = " ethaddr " ;
break ;
case 1 :
s = " eth1addr " ;
break ;
case 2 :
s = " eth2addr " ;
break ;
default : /* this should never happen */
printf ( " %s: Invalid device number %d \n " ,
__FUNCTION__ , devnum ) ;
return ;
}
Rename getenv_r() into getenv_f()
While running from flash, i. e. before relocation, we have only a
limited C runtime environment without writable data segment. In this
phase, some configurations (for example with environment in EEPROM)
must not use the normal getenv(), but a special function. This
function had been called getenv_r(), with the idea that the "_r"
suffix would mean the same as in the _r_eentrant versions of some of
the C library functions (for example getdate vs. getdate_r, getgrent
vs. getgrent_r, etc.).
Unfortunately this was a misleading name, as in U-Boot the "_r"
generally means "running from RAM", i. e. _after_ relocation.
To avoid confusion, rename into getenv_f() [as "running from flash"]
Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
15 years ago
temp = getenv_f ( s , buf , sizeof ( buf ) ) ;
s = ( temp > 0 ) ? buf : NULL ;
# ifdef DEBUG
printf ( " Setting MAC %d to %s \n " , devnum , s ) ;
# endif
for ( x = 0 ; x < 6 ; + + x ) {
dev - > enetaddr [ x ] = s ? simple_strtoul ( s , & e , 16 ) : 0 ;
if ( s )
s = ( * e ) ? e + 1 : e ;
}
/* ronen - set the MAC addr in the HW */
eth_port_uc_addr_set ( devnum , dev - > enetaddr , 0 ) ;
dev - > init = ( void * ) db64460_eth_probe ;
dev - > halt = ( void * ) ethernet_phy_reset ;
dev - > send = ( void * ) db64460_eth_transmit ;
dev - > recv = ( void * ) db64460_eth_poll ;
ethernet_private = calloc ( sizeof ( * ethernet_private ) , 1 ) ;
dev - > priv = ( void * ) ethernet_private ;
if ( ! ethernet_private ) {
printf ( " %s: %s allocation failure, %s \n " ,
__FUNCTION__ , dev - > name ,
" Private Device Structure " ) ;
free ( dev ) ;
return ;
}
/* start with an zeroed ETH_PORT_INFO */
memset ( ethernet_private , 0 , sizeof ( ETH_PORT_INFO ) ) ;
memcpy ( ethernet_private - > port_mac_addr , dev - > enetaddr , 6 ) ;
/* set pointer to memory for stats data structure etc... */
port_private = calloc ( sizeof ( * ethernet_private ) , 1 ) ;
ethernet_private - > port_private = ( void * ) port_private ;
if ( ! port_private ) {
printf ( " %s: %s allocation failure, %s \n " ,
__FUNCTION__ , dev - > name ,
" Port Private Device Structure " ) ;
free ( ethernet_private ) ;
free ( dev ) ;
return ;
}
port_private - > stats =
calloc ( sizeof ( struct net_device_stats ) , 1 ) ;
if ( ! port_private - > stats ) {
printf ( " %s: %s allocation failure, %s \n " ,
__FUNCTION__ , dev - > name ,
" Net stat Structure " ) ;
free ( port_private ) ;
free ( ethernet_private ) ;
free ( dev ) ;
return ;
}
memset ( ethernet_private - > port_private , 0 ,
sizeof ( struct mv64460_eth_priv ) ) ;
switch ( devnum ) {
case 0 :
ethernet_private - > port_num = ETH_0 ;
break ;
case 1 :
ethernet_private - > port_num = ETH_1 ;
break ;
case 2 :
ethernet_private - > port_num = ETH_2 ;
break ;
default :
printf ( " Invalid device number %d \n " , devnum ) ;
break ;
} ;
port_private - > port_num = devnum ;
/*
* Read MIB counter on the GT in order to reset them ,
* then zero all the stats fields in memory
*/
mv64460_eth_update_stat ( dev ) ;
memset ( port_private - > stats , 0 ,
sizeof ( struct net_device_stats ) ) ;
/* Extract the MAC address from the environment */
switch ( devnum ) {
case 0 :
s = " ethaddr " ;
break ;
case 1 :
s = " eth1addr " ;
break ;
case 2 :
s = " eth2addr " ;
break ;
default : /* this should never happen */
printf ( " %s: Invalid device number %d \n " ,
__FUNCTION__ , devnum ) ;
return ;
}
Rename getenv_r() into getenv_f()
While running from flash, i. e. before relocation, we have only a
limited C runtime environment without writable data segment. In this
phase, some configurations (for example with environment in EEPROM)
must not use the normal getenv(), but a special function. This
function had been called getenv_r(), with the idea that the "_r"
suffix would mean the same as in the _r_eentrant versions of some of
the C library functions (for example getdate vs. getdate_r, getgrent
vs. getgrent_r, etc.).
Unfortunately this was a misleading name, as in U-Boot the "_r"
generally means "running from RAM", i. e. _after_ relocation.
To avoid confusion, rename into getenv_f() [as "running from flash"]
Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
15 years ago
temp = getenv_f ( s , buf , sizeof ( buf ) ) ;
s = ( temp > 0 ) ? buf : NULL ;
# ifdef DEBUG
printf ( " Setting MAC %d to %s \n " , devnum , s ) ;
# endif
for ( x = 0 ; x < 6 ; + + x ) {
dev - > enetaddr [ x ] = s ? simple_strtoul ( s , & e , 16 ) : 0 ;
if ( s )
s = ( * e ) ? e + 1 : e ;
}
DP ( printf ( " Allocating descriptor and buffer rings \n " ) ) ;
ethernet_private - > p_rx_desc_area_base [ 0 ] =
( ETH_RX_DESC * ) memalign ( 16 ,
RX_DESC_ALIGNED_SIZE *
MV64460_RX_QUEUE_SIZE + 1 ) ;
ethernet_private - > p_tx_desc_area_base [ 0 ] =
( ETH_TX_DESC * ) memalign ( 16 ,
TX_DESC_ALIGNED_SIZE *
MV64460_TX_QUEUE_SIZE + 1 ) ;
ethernet_private - > p_rx_buffer_base [ 0 ] =
( char * ) memalign ( 16 ,
MV64460_RX_QUEUE_SIZE *
MV64460_TX_BUFFER_SIZE + 1 ) ;
ethernet_private - > p_tx_buffer_base [ 0 ] =
( char * ) memalign ( 16 ,
MV64460_RX_QUEUE_SIZE *
MV64460_TX_BUFFER_SIZE + 1 ) ;
# ifdef DEBUG_MV_ETH
/* DEBUG OUTPUT prints adresses of globals */
print_globals ( dev ) ;
# endif
eth_register ( dev ) ;
}
DP ( printf ( " %s: exit \n " , __FUNCTION__ ) ) ;
}
/**********************************************************************
* mv64460_eth_open
*
* This function is called when openning the network device . The function
* should initialize all the hardware , initialize cyclic Rx / Tx
* descriptors chain and buffers and allocate an IRQ to the network
* device .
*
* Input : a pointer to the network device structure
* / / ronen - changed the output to match net / eth . c needs
* Output : nonzero of success , zero if fails .
* under construction
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
int mv64460_eth_open ( struct eth_device * dev )
{
return ( mv64460_eth_real_open ( dev ) ) ;
}
/* Helper function for mv64460_eth_open */
static int mv64460_eth_real_open ( struct eth_device * dev )
{
unsigned int queue ;
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
u32 port_status , phy_reg_data ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
/* ronen - when we update the MAC env params we only update dev->enetaddr
see . / net / eth . c eth_set_enetaddr ( ) */
memcpy ( ethernet_private - > port_mac_addr , dev - > enetaddr , 6 ) ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
/* Stop RX Queues */
MV_REG_WRITE ( MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG ( port_num ) ,
0x0000ff00 ) ;
/* Clear the ethernet port interrupts */
MV_REG_WRITE ( MV64460_ETH_INTERRUPT_CAUSE_REG ( port_num ) , 0 ) ;
MV_REG_WRITE ( MV64460_ETH_INTERRUPT_CAUSE_EXTEND_REG ( port_num ) , 0 ) ;
/* Unmask RX buffer and TX end interrupt */
MV_REG_WRITE ( MV64460_ETH_INTERRUPT_MASK_REG ( port_num ) ,
INT_CAUSE_UNMASK_ALL ) ;
/* Unmask phy and link status changes interrupts */
MV_REG_WRITE ( MV64460_ETH_INTERRUPT_EXTEND_MASK_REG ( port_num ) ,
INT_CAUSE_UNMASK_ALL_EXT ) ;
/* Set phy address of the port */
ethernet_private - > port_phy_addr = 0x8 + port_num ;
/* Activate the DMA channels etc */
eth_port_init ( ethernet_private ) ;
/* "Allocate" setup TX rings */
for ( queue = 0 ; queue < MV64460_TX_QUEUE_NUM ; queue + + ) {
unsigned int size ;
port_private - > tx_ring_size [ queue ] = MV64460_TX_QUEUE_SIZE ;
size = ( port_private - > tx_ring_size [ queue ] * TX_DESC_ALIGNED_SIZE ) ; /*size = no of DESCs times DESC-size */
ethernet_private - > tx_desc_area_size [ queue ] = size ;
/* first clear desc area completely */
memset ( ( void * ) ethernet_private - > p_tx_desc_area_base [ queue ] ,
0 , ethernet_private - > tx_desc_area_size [ queue ] ) ;
/* initialize tx desc ring with low level driver */
if ( ether_init_tx_desc_ring
( ethernet_private , ETH_Q0 ,
port_private - > tx_ring_size [ queue ] ,
MV64460_TX_BUFFER_SIZE /* Each Buffer is 1600 Byte */ ,
( unsigned int ) ethernet_private - >
p_tx_desc_area_base [ queue ] ,
( unsigned int ) ethernet_private - >
p_tx_buffer_base [ queue ] ) = = false )
printf ( " ### Error initializing TX Ring \n " ) ;
}
/* "Allocate" setup RX rings */
for ( queue = 0 ; queue < MV64460_RX_QUEUE_NUM ; queue + + ) {
unsigned int size ;
/* Meantime RX Ring are fixed - but must be configurable by user */
port_private - > rx_ring_size [ queue ] = MV64460_RX_QUEUE_SIZE ;
size = ( port_private - > rx_ring_size [ queue ] *
RX_DESC_ALIGNED_SIZE ) ;
ethernet_private - > rx_desc_area_size [ queue ] = size ;
/* first clear desc area completely */
memset ( ( void * ) ethernet_private - > p_rx_desc_area_base [ queue ] ,
0 , ethernet_private - > rx_desc_area_size [ queue ] ) ;
if ( ( ether_init_rx_desc_ring
( ethernet_private , ETH_Q0 ,
port_private - > rx_ring_size [ queue ] ,
MV64460_RX_BUFFER_SIZE /* Each Buffer is 1600 Byte */ ,
( unsigned int ) ethernet_private - >
p_rx_desc_area_base [ queue ] ,
( unsigned int ) ethernet_private - >
p_rx_buffer_base [ queue ] ) ) = = false )
printf ( " ### Error initializing RX Ring \n " ) ;
}
eth_port_start ( ethernet_private ) ;
/* Set maximum receive buffer to 9700 bytes */
MV_REG_WRITE ( MV64460_ETH_PORT_SERIAL_CONTROL_REG ( port_num ) ,
( 0x5 < < 17 ) |
( MV_REG_READ
( MV64460_ETH_PORT_SERIAL_CONTROL_REG ( port_num ) )
& 0xfff1ffff ) ) ;
/*
* Set ethernet MTU for leaky bucket mechanism to 0 - this will
* disable the leaky bucket mechanism .
*/
MV_REG_WRITE ( MV64460_ETH_MAXIMUM_TRANSMIT_UNIT ( port_num ) , 0 ) ;
port_status = MV_REG_READ ( MV64460_ETH_PORT_STATUS_REG ( port_num ) ) ;
/* Check Link status on phy */
eth_port_read_smi_reg ( port_num , 1 , & phy_reg_data ) ;
if ( ! ( phy_reg_data & 0x20 ) ) {
/* Reset PHY */
if ( ( ethernet_phy_reset ( port_num ) ) ! = true ) {
printf ( " $$ Warnning: No link on port %d \n " ,
port_num ) ;
return 0 ;
} else {
eth_port_read_smi_reg ( port_num , 1 , & phy_reg_data ) ;
if ( ! ( phy_reg_data & 0x20 ) ) {
printf ( " ### Error: Phy is not active \n " ) ;
return 0 ;
}
}
} else {
mv64460_eth_print_phy_status ( dev ) ;
}
port_private - > eth_running = MAGIC_ETH_RUNNING ;
return 1 ;
}
static int mv64460_eth_free_tx_rings ( struct eth_device * dev )
{
unsigned int queue ;
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
volatile ETH_TX_DESC * p_tx_curr_desc ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
/* Stop Tx Queues */
MV_REG_WRITE ( MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG ( port_num ) ,
0x0000ff00 ) ;
/* Free TX rings */
DP ( printf ( " Clearing previously allocated TX queues... " ) ) ;
for ( queue = 0 ; queue < MV64460_TX_QUEUE_NUM ; queue + + ) {
/* Free on TX rings */
for ( p_tx_curr_desc =
ethernet_private - > p_tx_desc_area_base [ queue ] ;
( ( unsigned int ) p_tx_curr_desc < = ( unsigned int )
ethernet_private - > p_tx_desc_area_base [ queue ] +
ethernet_private - > tx_desc_area_size [ queue ] ) ;
p_tx_curr_desc =
( ETH_TX_DESC * ) ( ( unsigned int ) p_tx_curr_desc +
TX_DESC_ALIGNED_SIZE ) ) {
/* this is inside for loop */
if ( p_tx_curr_desc - > return_info ! = 0 ) {
p_tx_curr_desc - > return_info = 0 ;
DP ( printf ( " freed \n " ) ) ;
}
}
DP ( printf ( " Done \n " ) ) ;
}
return 0 ;
}
static int mv64460_eth_free_rx_rings ( struct eth_device * dev )
{
unsigned int queue ;
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
volatile ETH_RX_DESC * p_rx_curr_desc ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
/* Stop RX Queues */
MV_REG_WRITE ( MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG ( port_num ) ,
0x0000ff00 ) ;
/* Free RX rings */
DP ( printf ( " Clearing previously allocated RX queues... " ) ) ;
for ( queue = 0 ; queue < MV64460_RX_QUEUE_NUM ; queue + + ) {
/* Free preallocated skb's on RX rings */
for ( p_rx_curr_desc =
ethernet_private - > p_rx_desc_area_base [ queue ] ;
( ( ( unsigned int ) p_rx_curr_desc <
( ( unsigned int ) ethernet_private - >
p_rx_desc_area_base [ queue ] +
ethernet_private - > rx_desc_area_size [ queue ] ) ) ) ;
p_rx_curr_desc =
( ETH_RX_DESC * ) ( ( unsigned int ) p_rx_curr_desc +
RX_DESC_ALIGNED_SIZE ) ) {
if ( p_rx_curr_desc - > return_info ! = 0 ) {
p_rx_curr_desc - > return_info = 0 ;
DP ( printf ( " freed \n " ) ) ;
}
}
DP ( printf ( " Done \n " ) ) ;
}
return 0 ;
}
/**********************************************************************
* mv64460_eth_stop
*
* This function is used when closing the network device .
* It updates the hardware ,
* release all memory that holds buffers and descriptors and release the IRQ .
* Input : a pointer to the device structure
* Output : zero if success , nonzero if fails
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
int mv64460_eth_stop ( struct eth_device * dev )
{
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
/* Disable all gigE address decoder */
MV_REG_WRITE ( MV64460_ETH_BASE_ADDR_ENABLE_REG , 0x3f ) ;
DP ( printf ( " %s Ethernet stop called ... \n " , __FUNCTION__ ) ) ;
mv64460_eth_real_stop ( dev ) ;
return 0 ;
} ;
/* Helper function for mv64460_eth_stop */
static int mv64460_eth_real_stop ( struct eth_device * dev )
{
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
mv64460_eth_free_tx_rings ( dev ) ;
mv64460_eth_free_rx_rings ( dev ) ;
eth_port_reset ( ethernet_private - > port_num ) ;
/* Disable ethernet port interrupts */
MV_REG_WRITE ( MV64460_ETH_INTERRUPT_CAUSE_REG ( port_num ) , 0 ) ;
MV_REG_WRITE ( MV64460_ETH_INTERRUPT_CAUSE_EXTEND_REG ( port_num ) , 0 ) ;
/* Mask RX buffer and TX end interrupt */
MV_REG_WRITE ( MV64460_ETH_INTERRUPT_MASK_REG ( port_num ) , 0 ) ;
/* Mask phy and link status changes interrupts */
MV_REG_WRITE ( MV64460_ETH_INTERRUPT_EXTEND_MASK_REG ( port_num ) , 0 ) ;
MV_RESET_REG_BITS ( MV64460_CPU_INTERRUPT0_MASK_HIGH ,
BIT0 < < port_num ) ;
/* Print Network statistics */
# ifndef UPDATE_STATS_BY_SOFTWARE
/*
* Print statistics ( only if ethernet is running ) ,
* then zero all the stats fields in memory
*/
if ( port_private - > eth_running = = MAGIC_ETH_RUNNING ) {
port_private - > eth_running = 0 ;
mv64460_eth_print_stat ( dev ) ;
}
memset ( port_private - > stats , 0 , sizeof ( struct net_device_stats ) ) ;
# endif
DP ( printf ( " \n Ethernet stopped ... \n " ) ) ;
return 0 ;
}
/**********************************************************************
* mv64460_eth_start_xmit
*
* This function is queues a packet in the Tx descriptor for
* required port .
*
* Input : skb - a pointer to socket buffer
* dev - a pointer to the required port
*
* Output : zero upon success
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
int mv64460_eth_xmit ( struct eth_device * dev , volatile void * dataPtr ,
int dataSize )
{
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
PKT_INFO pkt_info ;
ETH_FUNC_RET_STATUS status ;
struct net_device_stats * stats ;
ETH_FUNC_RET_STATUS release_result ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
stats = port_private - > stats ;
/* Update packet info data structure */
pkt_info . cmd_sts = ETH_TX_FIRST_DESC | ETH_TX_LAST_DESC ; /* DMA owned, first last */
pkt_info . byte_cnt = dataSize ;
pkt_info . buf_ptr = ( unsigned int ) dataPtr ;
pkt_info . return_info = 0 ;
status = eth_port_send ( ethernet_private , ETH_Q0 , & pkt_info ) ;
if ( ( status = = ETH_ERROR ) | | ( status = = ETH_QUEUE_FULL ) ) {
printf ( " Error on transmitting packet .. " ) ;
if ( status = = ETH_QUEUE_FULL )
printf ( " ETH Queue is full. \n " ) ;
if ( status = = ETH_QUEUE_LAST_RESOURCE )
printf ( " ETH Queue: using last available resource. \n " ) ;
goto error ;
}
/* Update statistics and start of transmittion time */
stats - > tx_bytes + = dataSize ;
stats - > tx_packets + + ;
/* Check if packet(s) is(are) transmitted correctly (release everything) */
do {
release_result =
eth_tx_return_desc ( ethernet_private , ETH_Q0 ,
& pkt_info ) ;
switch ( release_result ) {
case ETH_OK :
DP ( printf ( " descriptor released \n " ) ) ;
if ( pkt_info . cmd_sts & BIT0 ) {
printf ( " Error in TX \n " ) ;
stats - > tx_errors + + ;
}
break ;
case ETH_RETRY :
DP ( printf ( " transmission still in process \n " ) ) ;
break ;
case ETH_ERROR :
printf ( " routine can not access Tx desc ring \n " ) ;
break ;
case ETH_END_OF_JOB :
DP ( printf ( " the routine has nothing to release \n " ) ) ;
break ;
default : /* should not happen */
break ;
}
} while ( release_result = = ETH_OK ) ;
return 0 ; /* success */
error :
return 1 ; /* Failed - higher layers will free the skb */
}
/**********************************************************************
* mv64460_eth_receive
*
* This function is forward packets that are received from the port ' s
* queues toward kernel core or FastRoute them to another interface .
*
* Input : dev - a pointer to the required interface
* max - maximum number to receive ( 0 means unlimted )
*
* Output : number of served packets
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
int mv64460_eth_receive ( struct eth_device * dev )
{
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
PKT_INFO pkt_info ;
struct net_device_stats * stats ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
stats = port_private - > stats ;
while ( ( eth_port_receive ( ethernet_private , ETH_Q0 , & pkt_info ) = =
ETH_OK ) ) {
# ifdef DEBUG_MV_ETH
if ( pkt_info . byte_cnt ! = 0 ) {
printf ( " %s: Received %d byte Packet @ 0x%x \n " ,
__FUNCTION__ , pkt_info . byte_cnt ,
pkt_info . buf_ptr ) ;
}
# endif
/* Update statistics. Note byte count includes 4 byte CRC count */
stats - > rx_packets + + ;
stats - > rx_bytes + = pkt_info . byte_cnt ;
/*
* In case received a packet without first / last bits on OR the error
* summary bit is on , the packets needs to be dropeed .
*/
if ( ( ( pkt_info .
cmd_sts & ( ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC ) ) ! =
( ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC ) )
| | ( pkt_info . cmd_sts & ETH_ERROR_SUMMARY ) ) {
stats - > rx_dropped + + ;
printf ( " Received packet spread on multiple descriptors \n " ) ;
/* Is this caused by an error ? */
if ( pkt_info . cmd_sts & ETH_ERROR_SUMMARY ) {
stats - > rx_errors + + ;
}
/* free these descriptors again without forwarding them to the higher layers */
pkt_info . buf_ptr & = ~ 0x7 ; /* realign buffer again */
pkt_info . byte_cnt = 0x0000 ; /* Reset Byte count */
if ( eth_rx_return_buff
( ethernet_private , ETH_Q0 , & pkt_info ) ! = ETH_OK ) {
printf ( " Error while returning the RX Desc to Ring \n " ) ;
} else {
DP ( printf ( " RX Desc returned to Ring \n " ) ) ;
}
/* /free these descriptors again */
} else {
/* !!! call higher layer processing */
# ifdef DEBUG_MV_ETH
printf ( " \n Now send it to upper layer protocols (NetReceive) ... \n " ) ;
# endif
/* let the upper layer handle the packet */
NetReceive ( ( uchar * ) pkt_info . buf_ptr ,
( int ) pkt_info . byte_cnt ) ;
/* **************************************************************** */
/* free descriptor */
pkt_info . buf_ptr & = ~ 0x7 ; /* realign buffer again */
pkt_info . byte_cnt = 0x0000 ; /* Reset Byte count */
DP ( printf
( " RX: pkt_info.buf_ptr = %x \n " ,
pkt_info . buf_ptr ) ) ;
if ( eth_rx_return_buff
( ethernet_private , ETH_Q0 , & pkt_info ) ! = ETH_OK ) {
printf ( " Error while returning the RX Desc to Ring \n " ) ;
} else {
DP ( printf ( " RX Desc returned to Ring \n " ) ) ;
}
/* **************************************************************** */
}
}
mv64460_eth_get_stats ( dev ) ; /* update statistics */
return 1 ;
}
/**********************************************************************
* mv64460_eth_get_stats
*
* Returns a pointer to the interface statistics .
*
* Input : dev - a pointer to the required interface
*
* Output : a pointer to the interface ' s statistics
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static struct net_device_stats * mv64460_eth_get_stats ( struct eth_device * dev )
{
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
unsigned int port_num ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
mv64460_eth_update_stat ( dev ) ;
return port_private - > stats ;
}
/**********************************************************************
* mv64460_eth_update_stat
*
* Update the statistics structure in the private data structure
*
* Input : pointer to ethernet interface network device structure
* Output : N / A
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void mv64460_eth_update_stat ( struct eth_device * dev )
{
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
struct net_device_stats * stats ;
unsigned int port_num ;
volatile unsigned int dummy ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
stats = port_private - > stats ;
/* These are false updates */
stats - > rx_packets + = ( unsigned long )
eth_read_mib_counter ( ethernet_private - > port_num ,
ETH_MIB_GOOD_FRAMES_RECEIVED ) ;
stats - > tx_packets + = ( unsigned long )
eth_read_mib_counter ( ethernet_private - > port_num ,
ETH_MIB_GOOD_FRAMES_SENT ) ;
stats - > rx_bytes + = ( unsigned long )
eth_read_mib_counter ( ethernet_private - > port_num ,
ETH_MIB_GOOD_OCTETS_RECEIVED_LOW ) ;
/*
* Ideally this should be as follows -
*
* stats - > rx_bytes + = stats - > rx_bytes +
* ( ( unsigned long ) ethReadMibCounter ( ethernet_private - > port_num ,
* ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH ) < < 32 ) ;
*
* But the unsigned long in PowerPC and MIPS are 32 bit . So the next read
* is just a dummy read for proper work of the GigE port
*/
dummy = eth_read_mib_counter ( ethernet_private - > port_num ,
ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH ) ;
stats - > tx_bytes + = ( unsigned long )
eth_read_mib_counter ( ethernet_private - > port_num ,
ETH_MIB_GOOD_OCTETS_SENT_LOW ) ;
dummy = eth_read_mib_counter ( ethernet_private - > port_num ,
ETH_MIB_GOOD_OCTETS_SENT_HIGH ) ;
stats - > rx_errors + = ( unsigned long )
eth_read_mib_counter ( ethernet_private - > port_num ,
ETH_MIB_MAC_RECEIVE_ERROR ) ;
/* Rx dropped is for received packet with CRC error */
stats - > rx_dropped + =
( unsigned long ) eth_read_mib_counter ( ethernet_private - >
port_num ,
ETH_MIB_BAD_CRC_EVENT ) ;
stats - > multicast + = ( unsigned long )
eth_read_mib_counter ( ethernet_private - > port_num ,
ETH_MIB_MULTICAST_FRAMES_RECEIVED ) ;
stats - > collisions + =
( unsigned long ) eth_read_mib_counter ( ethernet_private - >
port_num ,
ETH_MIB_COLLISION ) +
( unsigned long ) eth_read_mib_counter ( ethernet_private - >
port_num ,
ETH_MIB_LATE_COLLISION ) ;
/* detailed rx errors */
stats - > rx_length_errors + =
( unsigned long ) eth_read_mib_counter ( ethernet_private - >
port_num ,
ETH_MIB_UNDERSIZE_RECEIVED )
+
( unsigned long ) eth_read_mib_counter ( ethernet_private - >
port_num ,
ETH_MIB_OVERSIZE_RECEIVED ) ;
/* detailed tx errors */
}
# ifndef UPDATE_STATS_BY_SOFTWARE
/**********************************************************************
* mv64460_eth_print_stat
*
* Update the statistics structure in the private data structure
*
* Input : pointer to ethernet interface network device structure
* Output : N / A
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void mv64460_eth_print_stat ( struct eth_device * dev )
{
ETH_PORT_INFO * ethernet_private ;
struct mv64460_eth_priv * port_private ;
struct net_device_stats * stats ;
unsigned int port_num ;
ethernet_private = ( ETH_PORT_INFO * ) dev - > priv ;
port_private =
( struct mv64460_eth_priv * ) ethernet_private - > port_private ;
port_num = port_private - > port_num ;
stats = port_private - > stats ;
/* These are false updates */
printf ( " \n ### Network statistics: ### \n " ) ;
printf ( " -------------------------- \n " ) ;
printf ( " Packets received: %ld \n " , stats - > rx_packets ) ;
printf ( " Packets send: %ld \n " , stats - > tx_packets ) ;
printf ( " Received bytes: %ld \n " , stats - > rx_bytes ) ;
printf ( " Send bytes: %ld \n " , stats - > tx_bytes ) ;
if ( stats - > rx_errors ! = 0 )
printf ( " Rx Errors: %ld \n " ,
stats - > rx_errors ) ;
if ( stats - > rx_dropped ! = 0 )
printf ( " Rx dropped (CRC Errors): %ld \n " ,
stats - > rx_dropped ) ;
if ( stats - > multicast ! = 0 )
printf ( " Rx mulicast frames: %ld \n " ,
stats - > multicast ) ;
if ( stats - > collisions ! = 0 )
printf ( " No. of collisions: %ld \n " ,
stats - > collisions ) ;
if ( stats - > rx_length_errors ! = 0 )
printf ( " Rx length errors: %ld \n " ,
stats - > rx_length_errors ) ;
}
# endif
/**************************************************************************
* network_start - Network Kick Off Routine UBoot
* Inputs :
* Outputs :
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
bool db64460_eth_start ( struct eth_device * dev )
{
return ( mv64460_eth_open ( dev ) ) ; /* calls real open */
}
/*************************************************************************
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* The second part is the low level driver of the gigE ethernet ports . *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* based on Linux code
* arch / powerpc / galileo / EVB64460 / mv64460_eth . c - Driver for MV64460X ethernet ports
* Copyright ( C ) 2002 rabeeh @ galileo . co . il
* This program is free software ; you can redistribute it and / or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation ; either version 2
* of the License , or ( at your option ) any later version .
* This program is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the
* GNU General Public License for more details .
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
* Foundation , Inc . , 59 Temple Place - Suite 330 , Boston , MA 02111 - 1307 , USA .
*
*/
/********************************************************************************
* Marvell ' s Gigabit Ethernet controller low level driver
*
* DESCRIPTION :
* This file introduce low level API to Marvell ' s Gigabit Ethernet
* controller . This Gigabit Ethernet Controller driver API controls
* 1 ) Operations ( i . e . port init , start , reset etc ' ) .
* 2 ) Data flow ( i . e . port send , receive etc ' ) .
* Each Gigabit Ethernet port is controlled via ETH_PORT_INFO
* struct .
* This struct includes user configuration information as well as
* driver internal data needed for its operations .
*
* Supported Features :
* - This low level driver is OS independent . Allocating memory for
* the descriptor rings and buffers are not within the scope of
* this driver .
* - The user is free from Rx / Tx queue managing .
* - This low level driver introduce functionality API that enable
* the to operate Marvell ' s Gigabit Ethernet Controller in a
* convenient way .
* - Simple Gigabit Ethernet port operation API .
* - Simple Gigabit Ethernet port data flow API .
* - Data flow and operation API support per queue functionality .
* - Support cached descriptors for better performance .
* - Enable access to all four DRAM banks and internal SRAM memory
* spaces .
* - PHY access and control API .
* - Port control register configuration API .
* - Full control over Unicast and Multicast MAC configurations .
*
* Operation flow :
*
* Initialization phase
* This phase complete the initialization of the ETH_PORT_INFO
* struct .
* User information regarding port configuration has to be set
* prior to calling the port initialization routine . For example ,
* the user has to assign the port_phy_addr field which is board
* depended parameter .
* In this phase any port Tx / Rx activity is halted , MIB counters
* are cleared , PHY address is set according to user parameter and
* access to DRAM and internal SRAM memory spaces .
*
* Driver ring initialization
* Allocating memory for the descriptor rings and buffers is not
* within the scope of this driver . Thus , the user is required to
* allocate memory for the descriptors ring and buffers . Those
* memory parameters are used by the Rx and Tx ring initialization
* routines in order to curve the descriptor linked list in a form
* of a ring .
* Note : Pay special attention to alignment issues when using
* cached descriptors / buffers . In this phase the driver store
* information in the ETH_PORT_INFO struct regarding each queue
* ring .
*
* Driver start
* This phase prepares the Ethernet port for Rx and Tx activity .
* It uses the information stored in the ETH_PORT_INFO struct to
* initialize the various port registers .
*
* Data flow :
* All packet references to / from the driver are done using PKT_INFO
* struct .
* This struct is a unified struct used with Rx and Tx operations .
* This way the user is not required to be familiar with neither
* Tx nor Rx descriptors structures .
* The driver ' s descriptors rings are management by indexes .
* Those indexes controls the ring resources and used to indicate
* a SW resource error :
* ' current '
* This index points to the current available resource for use . For
* example in Rx process this index will point to the descriptor
* that will be passed to the user upon calling the receive routine .
* In Tx process , this index will point to the descriptor
* that will be assigned with the user packet info and transmitted .
* ' used '
* This index points to the descriptor that need to restore its
* resources . For example in Rx process , using the Rx buffer return
* API will attach the buffer returned in packet info to the
* descriptor pointed by ' used ' . In Tx process , using the Tx
* descriptor return will merely return the user packet info with
* the command status of the transmitted buffer pointed by the
* ' used ' index . Nevertheless , it is essential to use this routine
* to update the ' used ' index .
* ' first '
* This index supports Tx Scatter - Gather . It points to the first
* descriptor of a packet assembled of multiple buffers . For example
* when in middle of Such packet we have a Tx resource error the
* ' curr ' index get the value of ' first ' to indicate that the ring
* returned to its state before trying to transmit this packet .
*
* Receive operation :
* The eth_port_receive API set the packet information struct ,
* passed by the caller , with received information from the
* ' current ' SDMA descriptor .
* It is the user responsibility to return this resource back
* to the Rx descriptor ring to enable the reuse of this source .
* Return Rx resource is done using the eth_rx_return_buff API .
*
* Transmit operation :
* The eth_port_send API supports Scatter - Gather which enables to
* send a packet spanned over multiple buffers . This means that
* for each packet info structure given by the user and put into
* the Tx descriptors ring , will be transmitted only if the ' LAST '
* bit will be set in the packet info command status field . This
* API also consider restriction regarding buffer alignments and
* sizes .
* The user must return a Tx resource after ensuring the buffer
* has been transmitted to enable the Tx ring indexes to update .
*
* BOARD LAYOUT
* This device is on - board . No jumper diagram is necessary .
*
* EXTERNAL INTERFACE
*
* Prior to calling the initialization routine eth_port_init ( ) the user
* must set the following fields under ETH_PORT_INFO struct :
* port_num User Ethernet port number .
* port_phy_addr User PHY address of Ethernet port .
* port_mac_addr [ 6 ] User defined port MAC address .
* port_config User port configuration value .
* port_config_extend User port config extend value .
* port_sdma_config User port SDMA config value .
* port_serial_control User port serial control value .
* * port_virt_to_phys ( ) User function to cast virtual addr to CPU bus addr .
* * port_private User scratch pad for user specific data structures .
*
* This driver introduce a set of default values :
* PORT_CONFIG_VALUE Default port configuration value
* PORT_CONFIG_EXTEND_VALUE Default port extend configuration value
* PORT_SDMA_CONFIG_VALUE Default sdma control value
* PORT_SERIAL_CONTROL_VALUE Default port serial control value
*
* This driver data flow is done using the PKT_INFO struct which is
* a unified struct for Rx and Tx operations :
* byte_cnt Tx / Rx descriptor buffer byte count .
* l4i_chk CPU provided TCP Checksum . For Tx operation only .
* cmd_sts Tx / Rx descriptor command status .
* buf_ptr Tx / Rx descriptor buffer pointer .
* return_info Tx / Rx user resource return information .
*
*
* EXTERNAL SUPPORT REQUIREMENTS
*
* This driver requires the following external support :
*
* D_CACHE_FLUSH_LINE ( address , address offset )
*
* This macro applies assembly code to flush and invalidate cache
* line .
* address - address base .
* address offset - address offset
*
*
* CPU_PIPE_FLUSH
*
* This macro applies assembly code to flush the CPU pipeline .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* includes */
/* defines */
/* SDMA command macros */
# define ETH_ENABLE_TX_QUEUE(tx_queue, eth_port) \
MV_REG_WRITE ( MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG ( eth_port ) , ( 1 < < tx_queue ) )
# define ETH_DISABLE_TX_QUEUE(tx_queue, eth_port) \
MV_REG_WRITE ( MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG ( eth_port ) , \
( 1 < < ( 8 + tx_queue ) ) )
# define ETH_ENABLE_RX_QUEUE(rx_queue, eth_port) \
MV_REG_WRITE ( MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG ( eth_port ) , ( 1 < < rx_queue ) )
# define ETH_DISABLE_RX_QUEUE(rx_queue, eth_port) \
MV_REG_WRITE ( MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG ( eth_port ) , ( 1 < < ( 8 + rx_queue ) ) )
# define CURR_RFD_GET(p_curr_desc, queue) \
( ( p_curr_desc ) = p_eth_port_ctrl - > p_rx_curr_desc_q [ queue ] )
# define CURR_RFD_SET(p_curr_desc, queue) \
( p_eth_port_ctrl - > p_rx_curr_desc_q [ queue ] = ( p_curr_desc ) )
# define USED_RFD_GET(p_used_desc, queue) \
( ( p_used_desc ) = p_eth_port_ctrl - > p_rx_used_desc_q [ queue ] )
# define USED_RFD_SET(p_used_desc, queue)\
( p_eth_port_ctrl - > p_rx_used_desc_q [ queue ] = ( p_used_desc ) )
# define CURR_TFD_GET(p_curr_desc, queue) \
( ( p_curr_desc ) = p_eth_port_ctrl - > p_tx_curr_desc_q [ queue ] )
# define CURR_TFD_SET(p_curr_desc, queue) \
( p_eth_port_ctrl - > p_tx_curr_desc_q [ queue ] = ( p_curr_desc ) )
# define USED_TFD_GET(p_used_desc, queue) \
( ( p_used_desc ) = p_eth_port_ctrl - > p_tx_used_desc_q [ queue ] )
# define USED_TFD_SET(p_used_desc, queue) \
( p_eth_port_ctrl - > p_tx_used_desc_q [ queue ] = ( p_used_desc ) )
# define FIRST_TFD_GET(p_first_desc, queue) \
( ( p_first_desc ) = p_eth_port_ctrl - > p_tx_first_desc_q [ queue ] )
# define FIRST_TFD_SET(p_first_desc, queue) \
( p_eth_port_ctrl - > p_tx_first_desc_q [ queue ] = ( p_first_desc ) )
/* Macros that save access to desc in order to find next desc pointer */
# define RX_NEXT_DESC_PTR(p_rx_desc, queue) (ETH_RX_DESC*)(((((unsigned int)p_rx_desc - (unsigned int)p_eth_port_ctrl->p_rx_desc_area_base[queue]) + RX_DESC_ALIGNED_SIZE) % p_eth_port_ctrl->rx_desc_area_size[queue]) + (unsigned int)p_eth_port_ctrl->p_rx_desc_area_base[queue])
# define TX_NEXT_DESC_PTR(p_tx_desc, queue) (ETH_TX_DESC*)(((((unsigned int)p_tx_desc - (unsigned int)p_eth_port_ctrl->p_tx_desc_area_base[queue]) + TX_DESC_ALIGNED_SIZE) % p_eth_port_ctrl->tx_desc_area_size[queue]) + (unsigned int)p_eth_port_ctrl->p_tx_desc_area_base[queue])
# define LINK_UP_TIMEOUT 100000
# define PHY_BUSY_TIMEOUT 10000000
/* locals */
/* PHY routines */
static void ethernet_phy_set ( ETH_PORT eth_port_num , int phy_addr ) ;
static int ethernet_phy_get ( ETH_PORT eth_port_num ) ;
/* Ethernet Port routines */
static void eth_set_access_control ( ETH_PORT eth_port_num ,
ETH_WIN_PARAM * param ) ;
static bool eth_port_uc_addr ( ETH_PORT eth_port_num , unsigned char uc_nibble ,
ETH_QUEUE queue , int option ) ;
#if 0 /* FIXME */
static bool eth_port_smc_addr ( ETH_PORT eth_port_num ,
unsigned char mc_byte ,
ETH_QUEUE queue , int option ) ;
static bool eth_port_omc_addr ( ETH_PORT eth_port_num ,
unsigned char crc8 ,
ETH_QUEUE queue , int option ) ;
# endif
static void eth_b_copy ( unsigned int src_addr , unsigned int dst_addr ,
int byte_count ) ;
void eth_dbg ( ETH_PORT_INFO * p_eth_port_ctrl ) ;
typedef enum _memory_bank { BANK0 , BANK1 , BANK2 , BANK3 } MEMORY_BANK ;
u32 mv_get_dram_bank_base_addr ( MEMORY_BANK bank )
{
u32 result = 0 ;
u32 enable = MV_REG_READ ( MV64460_BASE_ADDR_ENABLE ) ;
if ( enable & ( 1 < < bank ) )
return 0 ;
if ( bank = = BANK0 )
result = MV_REG_READ ( MV64460_CS_0_BASE_ADDR ) ;
if ( bank = = BANK1 )
result = MV_REG_READ ( MV64460_CS_1_BASE_ADDR ) ;
if ( bank = = BANK2 )
result = MV_REG_READ ( MV64460_CS_2_BASE_ADDR ) ;
if ( bank = = BANK3 )
result = MV_REG_READ ( MV64460_CS_3_BASE_ADDR ) ;
result & = 0x0000ffff ;
result = result < < 16 ;
return result ;
}
u32 mv_get_dram_bank_size ( MEMORY_BANK bank )
{
u32 result = 0 ;
u32 enable = MV_REG_READ ( MV64460_BASE_ADDR_ENABLE ) ;
if ( enable & ( 1 < < bank ) )
return 0 ;
if ( bank = = BANK0 )
result = MV_REG_READ ( MV64460_CS_0_SIZE ) ;
if ( bank = = BANK1 )
result = MV_REG_READ ( MV64460_CS_1_SIZE ) ;
if ( bank = = BANK2 )
result = MV_REG_READ ( MV64460_CS_2_SIZE ) ;
if ( bank = = BANK3 )
result = MV_REG_READ ( MV64460_CS_3_SIZE ) ;
result + = 1 ;
result & = 0x0000ffff ;
result = result < < 16 ;
return result ;
}
u32 mv_get_internal_sram_base ( void )
{
u32 result ;
result = MV_REG_READ ( MV64460_INTEGRATED_SRAM_BASE_ADDR ) ;
result & = 0x0000ffff ;
result = result < < 16 ;
return result ;
}
/*******************************************************************************
* eth_port_init - Initialize the Ethernet port driver
*
* DESCRIPTION :
* This function prepares the ethernet port to start its activity :
* 1 ) Completes the ethernet port driver struct initialization toward port
* start routine .
* 2 ) Resets the device to a quiescent state in case of warm reboot .
* 3 ) Enable SDMA access to all four DRAM banks as well as internal SRAM .
* 4 ) Clean MAC tables . The reset status of those tables is unknown .
* 5 ) Set PHY address .
* Note : Call this routine prior to eth_port_start routine and after setting
* user values in the user fields of Ethernet port control struct ( i . e .
* port_phy_addr ) .
*
* INPUT :
* ETH_PORT_INFO * p_eth_port_ctrl Ethernet port control struct
*
* OUTPUT :
* See description .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void eth_port_init ( ETH_PORT_INFO * p_eth_port_ctrl )
{
int queue ;
ETH_WIN_PARAM win_param ;
p_eth_port_ctrl - > port_config = PORT_CONFIG_VALUE ;
p_eth_port_ctrl - > port_config_extend = PORT_CONFIG_EXTEND_VALUE ;
p_eth_port_ctrl - > port_sdma_config = PORT_SDMA_CONFIG_VALUE ;
p_eth_port_ctrl - > port_serial_control = PORT_SERIAL_CONTROL_VALUE ;
p_eth_port_ctrl - > port_rx_queue_command = 0 ;
p_eth_port_ctrl - > port_tx_queue_command = 0 ;
/* Zero out SW structs */
for ( queue = 0 ; queue < MAX_RX_QUEUE_NUM ; queue + + ) {
CURR_RFD_SET ( ( ETH_RX_DESC * ) 0x00000000 , queue ) ;
USED_RFD_SET ( ( ETH_RX_DESC * ) 0x00000000 , queue ) ;
p_eth_port_ctrl - > rx_resource_err [ queue ] = false ;
}
for ( queue = 0 ; queue < MAX_TX_QUEUE_NUM ; queue + + ) {
CURR_TFD_SET ( ( ETH_TX_DESC * ) 0x00000000 , queue ) ;
USED_TFD_SET ( ( ETH_TX_DESC * ) 0x00000000 , queue ) ;
FIRST_TFD_SET ( ( ETH_TX_DESC * ) 0x00000000 , queue ) ;
p_eth_port_ctrl - > tx_resource_err [ queue ] = false ;
}
eth_port_reset ( p_eth_port_ctrl - > port_num ) ;
/* Set access parameters for DRAM bank 0 */
win_param . win = ETH_WIN0 ; /* Use Ethernet window 0 */
win_param . target = ETH_TARGET_DRAM ; /* Window target - DDR */
win_param . attributes = EBAR_ATTR_DRAM_CS0 ; /* Enable DRAM bank */
# ifndef CONFIG_NOT_COHERENT_CACHE
win_param . attributes | = EBAR_ATTR_DRAM_CACHE_COHERENCY_WB ;
# endif
win_param . high_addr = 0 ;
/* Get bank base */
win_param . base_addr = mv_get_dram_bank_base_addr ( BANK0 ) ;
win_param . size = mv_get_dram_bank_size ( BANK0 ) ; /* Get bank size */
if ( win_param . size = = 0 )
win_param . enable = 0 ;
else
win_param . enable = 1 ; /* Enable the access */
win_param . access_ctrl = EWIN_ACCESS_FULL ; /* Enable full access */
/* Set the access control for address window (EPAPR) READ & WRITE */
eth_set_access_control ( p_eth_port_ctrl - > port_num , & win_param ) ;
/* Set access parameters for DRAM bank 1 */
win_param . win = ETH_WIN1 ; /* Use Ethernet window 1 */
win_param . target = ETH_TARGET_DRAM ; /* Window target - DDR */
win_param . attributes = EBAR_ATTR_DRAM_CS1 ; /* Enable DRAM bank */
# ifndef CONFIG_NOT_COHERENT_CACHE
win_param . attributes | = EBAR_ATTR_DRAM_CACHE_COHERENCY_WB ;
# endif
win_param . high_addr = 0 ;
/* Get bank base */
win_param . base_addr = mv_get_dram_bank_base_addr ( BANK1 ) ;
win_param . size = mv_get_dram_bank_size ( BANK1 ) ; /* Get bank size */
if ( win_param . size = = 0 )
win_param . enable = 0 ;
else
win_param . enable = 1 ; /* Enable the access */
win_param . access_ctrl = EWIN_ACCESS_FULL ; /* Enable full access */
/* Set the access control for address window (EPAPR) READ & WRITE */
eth_set_access_control ( p_eth_port_ctrl - > port_num , & win_param ) ;
/* Set access parameters for DRAM bank 2 */
win_param . win = ETH_WIN2 ; /* Use Ethernet window 2 */
win_param . target = ETH_TARGET_DRAM ; /* Window target - DDR */
win_param . attributes = EBAR_ATTR_DRAM_CS2 ; /* Enable DRAM bank */
# ifndef CONFIG_NOT_COHERENT_CACHE
win_param . attributes | = EBAR_ATTR_DRAM_CACHE_COHERENCY_WB ;
# endif
win_param . high_addr = 0 ;
/* Get bank base */
win_param . base_addr = mv_get_dram_bank_base_addr ( BANK2 ) ;
win_param . size = mv_get_dram_bank_size ( BANK2 ) ; /* Get bank size */
if ( win_param . size = = 0 )
win_param . enable = 0 ;
else
win_param . enable = 1 ; /* Enable the access */
win_param . access_ctrl = EWIN_ACCESS_FULL ; /* Enable full access */
/* Set the access control for address window (EPAPR) READ & WRITE */
eth_set_access_control ( p_eth_port_ctrl - > port_num , & win_param ) ;
/* Set access parameters for DRAM bank 3 */
win_param . win = ETH_WIN3 ; /* Use Ethernet window 3 */
win_param . target = ETH_TARGET_DRAM ; /* Window target - DDR */
win_param . attributes = EBAR_ATTR_DRAM_CS3 ; /* Enable DRAM bank */
# ifndef CONFIG_NOT_COHERENT_CACHE
win_param . attributes | = EBAR_ATTR_DRAM_CACHE_COHERENCY_WB ;
# endif
win_param . high_addr = 0 ;
/* Get bank base */
win_param . base_addr = mv_get_dram_bank_base_addr ( BANK3 ) ;
win_param . size = mv_get_dram_bank_size ( BANK3 ) ; /* Get bank size */
if ( win_param . size = = 0 )
win_param . enable = 0 ;
else
win_param . enable = 1 ; /* Enable the access */
win_param . access_ctrl = EWIN_ACCESS_FULL ; /* Enable full access */
/* Set the access control for address window (EPAPR) READ & WRITE */
eth_set_access_control ( p_eth_port_ctrl - > port_num , & win_param ) ;
/* Set access parameters for Internal SRAM */
win_param . win = ETH_WIN4 ; /* Use Ethernet window 0 */
win_param . target = EBAR_TARGET_CBS ; /* Target - Internal SRAM */
win_param . attributes = EBAR_ATTR_CBS_SRAM | EBAR_ATTR_CBS_SRAM_BLOCK0 ;
win_param . high_addr = 0 ;
win_param . base_addr = mv_get_internal_sram_base ( ) ; /* Get base addr */
win_param . size = MV64460_INTERNAL_SRAM_SIZE ; /* Get bank size */
win_param . enable = 1 ; /* Enable the access */
win_param . access_ctrl = EWIN_ACCESS_FULL ; /* Enable full access */
/* Set the access control for address window (EPAPR) READ & WRITE */
eth_set_access_control ( p_eth_port_ctrl - > port_num , & win_param ) ;
eth_port_init_mac_tables ( p_eth_port_ctrl - > port_num ) ;
ethernet_phy_set ( p_eth_port_ctrl - > port_num ,
p_eth_port_ctrl - > port_phy_addr ) ;
return ;
}
/*******************************************************************************
* eth_port_start - Start the Ethernet port activity .
*
* DESCRIPTION :
* This routine prepares the Ethernet port for Rx and Tx activity :
* 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that
* has been initialized a descriptor ' s ring ( using ether_init_tx_desc_ring
* for Tx and ether_init_rx_desc_ring for Rx )
* 2. Initialize and enable the Ethernet configuration port by writing to
* the port ' s configuration and command registers .
* 3. Initialize and enable the SDMA by writing to the SDMA ' s
* configuration and command registers .
* After completing these steps , the ethernet port SDMA can starts to
* perform Rx and Tx activities .
*
* Note : Each Rx and Tx queue descriptor ' s list must be initialized prior
* to calling this function ( use ether_init_tx_desc_ring for Tx queues and
* ether_init_rx_desc_ring for Rx queues ) .
*
* INPUT :
* ETH_PORT_INFO * p_eth_port_ctrl Ethernet port control struct
*
* OUTPUT :
* Ethernet port is ready to receive and transmit .
*
* RETURN :
* false if the port PHY is not up .
* true otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool eth_port_start ( ETH_PORT_INFO * p_eth_port_ctrl )
{
int queue ;
volatile ETH_TX_DESC * p_tx_curr_desc ;
volatile ETH_RX_DESC * p_rx_curr_desc ;
unsigned int phy_reg_data ;
ETH_PORT eth_port_num = p_eth_port_ctrl - > port_num ;
/* Assignment of Tx CTRP of given queue */
for ( queue = 0 ; queue < MAX_TX_QUEUE_NUM ; queue + + ) {
CURR_TFD_GET ( p_tx_curr_desc , queue ) ;
MV_REG_WRITE ( ( MV64460_ETH_TX_CURRENT_QUEUE_DESC_PTR_0
( eth_port_num )
+ ( 4 * queue ) ) ,
( ( unsigned int ) p_tx_curr_desc ) ) ;
}
/* Assignment of Rx CRDP of given queue */
for ( queue = 0 ; queue < MAX_RX_QUEUE_NUM ; queue + + ) {
CURR_RFD_GET ( p_rx_curr_desc , queue ) ;
MV_REG_WRITE ( ( MV64460_ETH_RX_CURRENT_QUEUE_DESC_PTR_0
( eth_port_num )
+ ( 4 * queue ) ) ,
( ( unsigned int ) p_rx_curr_desc ) ) ;
if ( p_rx_curr_desc ! = NULL )
/* Add the assigned Ethernet address to the port's address table */
eth_port_uc_addr_set ( p_eth_port_ctrl - > port_num ,
p_eth_port_ctrl - > port_mac_addr ,
queue ) ;
}
/* Assign port configuration and command. */
MV_REG_WRITE ( MV64460_ETH_PORT_CONFIG_REG ( eth_port_num ) ,
p_eth_port_ctrl - > port_config ) ;
MV_REG_WRITE ( MV64460_ETH_PORT_CONFIG_EXTEND_REG ( eth_port_num ) ,
p_eth_port_ctrl - > port_config_extend ) ;
MV_REG_WRITE ( MV64460_ETH_PORT_SERIAL_CONTROL_REG ( eth_port_num ) ,
p_eth_port_ctrl - > port_serial_control ) ;
MV_SET_REG_BITS ( MV64460_ETH_PORT_SERIAL_CONTROL_REG ( eth_port_num ) ,
ETH_SERIAL_PORT_ENABLE ) ;
/* Assign port SDMA configuration */
MV_REG_WRITE ( MV64460_ETH_SDMA_CONFIG_REG ( eth_port_num ) ,
p_eth_port_ctrl - > port_sdma_config ) ;
MV_REG_WRITE ( MV64460_ETH_TX_QUEUE_0_TOKEN_BUCKET_COUNT
( eth_port_num ) , 0x3fffffff ) ;
MV_REG_WRITE ( MV64460_ETH_TX_QUEUE_0_TOKEN_BUCKET_CONFIG
( eth_port_num ) , 0x03fffcff ) ;
/* Turn off the port/queue bandwidth limitation */
MV_REG_WRITE ( MV64460_ETH_MAXIMUM_TRANSMIT_UNIT ( eth_port_num ) , 0x0 ) ;
/* Enable port Rx. */
MV_REG_WRITE ( MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG ( eth_port_num ) ,
p_eth_port_ctrl - > port_rx_queue_command ) ;
/* Check if link is up */
eth_port_read_smi_reg ( eth_port_num , 1 , & phy_reg_data ) ;
if ( ! ( phy_reg_data & 0x20 ) )
return false ;
return true ;
}
/*******************************************************************************
* eth_port_uc_addr_set - This function Set the port Unicast address .
*
* DESCRIPTION :
* This function Set the port Ethernet MAC address .
*
* INPUT :
* ETH_PORT eth_port_num Port number .
* char * p_addr Address to be set
* ETH_QUEUE queue Rx queue number for this MAC address .
*
* OUTPUT :
* Set MAC address low and high registers . also calls eth_port_uc_addr ( )
* To set the unicast table with the proper information .
*
* RETURN :
* N / A .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void eth_port_uc_addr_set ( ETH_PORT eth_port_num ,
unsigned char * p_addr , ETH_QUEUE queue )
{
unsigned int mac_h ;
unsigned int mac_l ;
mac_l = ( p_addr [ 4 ] < < 8 ) | ( p_addr [ 5 ] ) ;
mac_h = ( p_addr [ 0 ] < < 24 ) | ( p_addr [ 1 ] < < 16 ) |
( p_addr [ 2 ] < < 8 ) | ( p_addr [ 3 ] < < 0 ) ;
MV_REG_WRITE ( MV64460_ETH_MAC_ADDR_LOW ( eth_port_num ) , mac_l ) ;
MV_REG_WRITE ( MV64460_ETH_MAC_ADDR_HIGH ( eth_port_num ) , mac_h ) ;
/* Accept frames of this address */
eth_port_uc_addr ( eth_port_num , p_addr [ 5 ] , queue , ACCEPT_MAC_ADDR ) ;
return ;
}
/*******************************************************************************
* eth_port_uc_addr - This function Set the port unicast address table
*
* DESCRIPTION :
* This function locates the proper entry in the Unicast table for the
* specified MAC nibble and sets its properties according to function
* parameters .
*
* INPUT :
* ETH_PORT eth_port_num Port number .
* unsigned char uc_nibble Unicast MAC Address last nibble .
* ETH_QUEUE queue Rx queue number for this MAC address .
* int option 0 = Add , 1 = remove address .
*
* OUTPUT :
* This function add / removes MAC addresses from the port unicast address
* table .
*
* RETURN :
* true is output succeeded .
* false if option parameter is invalid .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool eth_port_uc_addr ( ETH_PORT eth_port_num ,
unsigned char uc_nibble ,
ETH_QUEUE queue , int option )
{
unsigned int unicast_reg ;
unsigned int tbl_offset ;
unsigned int reg_offset ;
/* Locate the Unicast table entry */
uc_nibble = ( 0xf & uc_nibble ) ;
tbl_offset = ( uc_nibble / 4 ) * 4 ; /* Register offset from unicast table base */
reg_offset = uc_nibble % 4 ; /* Entry offset within the above register */
switch ( option ) {
case REJECT_MAC_ADDR :
/* Clear accepts frame bit at specified unicast DA table entry */
unicast_reg =
MV_REG_READ ( ( MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE
( eth_port_num )
+ tbl_offset ) ) ;
unicast_reg & = ( 0x0E < < ( 8 * reg_offset ) ) ;
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE
( eth_port_num )
+ tbl_offset ) , unicast_reg ) ;
break ;
case ACCEPT_MAC_ADDR :
/* Set accepts frame bit at unicast DA filter table entry */
unicast_reg =
MV_REG_READ ( ( MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE
( eth_port_num )
+ tbl_offset ) ) ;
unicast_reg | = ( ( 0x01 | queue ) < < ( 8 * reg_offset ) ) ;
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE
( eth_port_num )
+ tbl_offset ) , unicast_reg ) ;
break ;
default :
return false ;
}
return true ;
}
#if 0 /* FIXME */
/*******************************************************************************
* eth_port_mc_addr - Multicast address settings .
*
* DESCRIPTION :
* This API controls the MV device MAC multicast support .
* The MV device supports multicast using two tables :
* 1 ) Special Multicast Table for MAC addresses of the form
* 0x01 - 00 - 5E-00 - 00 - XX ( where XX is between 0x00 and 0 x_fF ) .
* The MAC DA [ 7 : 0 ] bits are used as a pointer to the Special Multicast
* Table entries in the DA - Filter table .
* In this case , the function calls eth_port_smc_addr ( ) routine to set the
* Special Multicast Table .
* 2 ) Other Multicast Table for multicast of another type . A CRC - 8 bit
* is used as an index to the Other Multicast Table entries in the
* DA - Filter table .
* In this case , the function calculates the CRC - 8 bit value and calls
* eth_port_omc_addr ( ) routine to set the Other Multicast Table .
* INPUT :
* ETH_PORT eth_port_num Port number .
* unsigned char * p_addr Unicast MAC Address .
* ETH_QUEUE queue Rx queue number for this MAC address .
* int option 0 = Add , 1 = remove address .
*
* OUTPUT :
* See description .
*
* RETURN :
* true is output succeeded .
* false if add_address_table_entry ( ) failed .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void eth_port_mc_addr ( ETH_PORT eth_port_num ,
unsigned char * p_addr ,
ETH_QUEUE queue , int option )
{
unsigned int mac_h ;
unsigned int mac_l ;
unsigned char crc_result = 0 ;
int mac_array [ 48 ] ;
int crc [ 8 ] ;
int i ;
if ( ( p_addr [ 0 ] = = 0x01 ) & &
( p_addr [ 1 ] = = 0x00 ) & &
( p_addr [ 2 ] = = 0x5E ) & & ( p_addr [ 3 ] = = 0x00 ) & & ( p_addr [ 4 ] = = 0x00 ) )
eth_port_smc_addr ( eth_port_num , p_addr [ 5 ] , queue , option ) ;
else {
/* Calculate CRC-8 out of the given address */
mac_h = ( p_addr [ 0 ] < < 8 ) | ( p_addr [ 1 ] ) ;
mac_l = ( p_addr [ 2 ] < < 24 ) | ( p_addr [ 3 ] < < 16 ) |
( p_addr [ 4 ] < < 8 ) | ( p_addr [ 5 ] < < 0 ) ;
for ( i = 0 ; i < 32 ; i + + )
mac_array [ i ] = ( mac_l > > i ) & 0x1 ;
for ( i = 32 ; i < 48 ; i + + )
mac_array [ i ] = ( mac_h > > ( i - 32 ) ) & 0x1 ;
crc [ 0 ] = mac_array [ 45 ] ^ mac_array [ 43 ] ^ mac_array [ 40 ] ^
mac_array [ 39 ] ^ mac_array [ 35 ] ^ mac_array [ 34 ] ^
mac_array [ 31 ] ^ mac_array [ 30 ] ^ mac_array [ 28 ] ^
mac_array [ 23 ] ^ mac_array [ 21 ] ^ mac_array [ 19 ] ^
mac_array [ 18 ] ^ mac_array [ 16 ] ^ mac_array [ 14 ] ^
mac_array [ 12 ] ^ mac_array [ 8 ] ^ mac_array [ 7 ] ^
mac_array [ 6 ] ^ mac_array [ 0 ] ;
crc [ 1 ] = mac_array [ 46 ] ^ mac_array [ 45 ] ^ mac_array [ 44 ] ^
mac_array [ 43 ] ^ mac_array [ 41 ] ^ mac_array [ 39 ] ^
mac_array [ 36 ] ^ mac_array [ 34 ] ^ mac_array [ 32 ] ^
mac_array [ 30 ] ^ mac_array [ 29 ] ^ mac_array [ 28 ] ^
mac_array [ 24 ] ^ mac_array [ 23 ] ^ mac_array [ 22 ] ^
mac_array [ 21 ] ^ mac_array [ 20 ] ^ mac_array [ 18 ] ^
mac_array [ 17 ] ^ mac_array [ 16 ] ^ mac_array [ 15 ] ^
mac_array [ 14 ] ^ mac_array [ 13 ] ^ mac_array [ 12 ] ^
mac_array [ 9 ] ^ mac_array [ 6 ] ^ mac_array [ 1 ] ^
mac_array [ 0 ] ;
crc [ 2 ] = mac_array [ 47 ] ^ mac_array [ 46 ] ^ mac_array [ 44 ] ^
mac_array [ 43 ] ^ mac_array [ 42 ] ^ mac_array [ 39 ] ^
mac_array [ 37 ] ^ mac_array [ 34 ] ^ mac_array [ 33 ] ^
mac_array [ 29 ] ^ mac_array [ 28 ] ^ mac_array [ 25 ] ^
mac_array [ 24 ] ^ mac_array [ 22 ] ^ mac_array [ 17 ] ^
mac_array [ 15 ] ^ mac_array [ 13 ] ^ mac_array [ 12 ] ^
mac_array [ 10 ] ^ mac_array [ 8 ] ^ mac_array [ 6 ] ^
mac_array [ 2 ] ^ mac_array [ 1 ] ^ mac_array [ 0 ] ;
crc [ 3 ] = mac_array [ 47 ] ^ mac_array [ 45 ] ^ mac_array [ 44 ] ^
mac_array [ 43 ] ^ mac_array [ 40 ] ^ mac_array [ 38 ] ^
mac_array [ 35 ] ^ mac_array [ 34 ] ^ mac_array [ 30 ] ^
mac_array [ 29 ] ^ mac_array [ 26 ] ^ mac_array [ 25 ] ^
mac_array [ 23 ] ^ mac_array [ 18 ] ^ mac_array [ 16 ] ^
mac_array [ 14 ] ^ mac_array [ 13 ] ^ mac_array [ 11 ] ^
mac_array [ 9 ] ^ mac_array [ 7 ] ^ mac_array [ 3 ] ^
mac_array [ 2 ] ^ mac_array [ 1 ] ;
crc [ 4 ] = mac_array [ 46 ] ^ mac_array [ 45 ] ^ mac_array [ 44 ] ^
mac_array [ 41 ] ^ mac_array [ 39 ] ^ mac_array [ 36 ] ^
mac_array [ 35 ] ^ mac_array [ 31 ] ^ mac_array [ 30 ] ^
mac_array [ 27 ] ^ mac_array [ 26 ] ^ mac_array [ 24 ] ^
mac_array [ 19 ] ^ mac_array [ 17 ] ^ mac_array [ 15 ] ^
mac_array [ 14 ] ^ mac_array [ 12 ] ^ mac_array [ 10 ] ^
mac_array [ 8 ] ^ mac_array [ 4 ] ^ mac_array [ 3 ] ^
mac_array [ 2 ] ;
crc [ 5 ] = mac_array [ 47 ] ^ mac_array [ 46 ] ^ mac_array [ 45 ] ^
mac_array [ 42 ] ^ mac_array [ 40 ] ^ mac_array [ 37 ] ^
mac_array [ 36 ] ^ mac_array [ 32 ] ^ mac_array [ 31 ] ^
mac_array [ 28 ] ^ mac_array [ 27 ] ^ mac_array [ 25 ] ^
mac_array [ 20 ] ^ mac_array [ 18 ] ^ mac_array [ 16 ] ^
mac_array [ 15 ] ^ mac_array [ 13 ] ^ mac_array [ 11 ] ^
mac_array [ 9 ] ^ mac_array [ 5 ] ^ mac_array [ 4 ] ^
mac_array [ 3 ] ;
crc [ 6 ] = mac_array [ 47 ] ^ mac_array [ 46 ] ^ mac_array [ 43 ] ^
mac_array [ 41 ] ^ mac_array [ 38 ] ^ mac_array [ 37 ] ^
mac_array [ 33 ] ^ mac_array [ 32 ] ^ mac_array [ 29 ] ^
mac_array [ 28 ] ^ mac_array [ 26 ] ^ mac_array [ 21 ] ^
mac_array [ 19 ] ^ mac_array [ 17 ] ^ mac_array [ 16 ] ^
mac_array [ 14 ] ^ mac_array [ 12 ] ^ mac_array [ 10 ] ^
mac_array [ 6 ] ^ mac_array [ 5 ] ^ mac_array [ 4 ] ;
crc [ 7 ] = mac_array [ 47 ] ^ mac_array [ 44 ] ^ mac_array [ 42 ] ^
mac_array [ 39 ] ^ mac_array [ 38 ] ^ mac_array [ 34 ] ^
mac_array [ 33 ] ^ mac_array [ 30 ] ^ mac_array [ 29 ] ^
mac_array [ 27 ] ^ mac_array [ 22 ] ^ mac_array [ 20 ] ^
mac_array [ 18 ] ^ mac_array [ 17 ] ^ mac_array [ 15 ] ^
mac_array [ 13 ] ^ mac_array [ 11 ] ^ mac_array [ 7 ] ^
mac_array [ 6 ] ^ mac_array [ 5 ] ;
for ( i = 0 ; i < 8 ; i + + )
crc_result = crc_result | ( crc [ i ] < < i ) ;
eth_port_omc_addr ( eth_port_num , crc_result , queue , option ) ;
}
return ;
}
/*******************************************************************************
* eth_port_smc_addr - Special Multicast address settings .
*
* DESCRIPTION :
* This routine controls the MV device special MAC multicast support .
* The Special Multicast Table for MAC addresses supports MAC of the form
* 0x01 - 00 - 5E-00 - 00 - XX ( where XX is between 0x00 and 0 x_fF ) .
* The MAC DA [ 7 : 0 ] bits are used as a pointer to the Special Multicast
* Table entries in the DA - Filter table .
* This function set the Special Multicast Table appropriate entry
* according to the argument given .
*
* INPUT :
* ETH_PORT eth_port_num Port number .
* unsigned char mc_byte Multicast addr last byte ( MAC DA [ 7 : 0 ] bits ) .
* ETH_QUEUE queue Rx queue number for this MAC address .
* int option 0 = Add , 1 = remove address .
*
* OUTPUT :
* See description .
*
* RETURN :
* true is output succeeded .
* false if option parameter is invalid .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool eth_port_smc_addr ( ETH_PORT eth_port_num ,
unsigned char mc_byte ,
ETH_QUEUE queue , int option )
{
unsigned int smc_table_reg ;
unsigned int tbl_offset ;
unsigned int reg_offset ;
/* Locate the SMC table entry */
tbl_offset = ( mc_byte / 4 ) * 4 ; /* Register offset from SMC table base */
reg_offset = mc_byte % 4 ; /* Entry offset within the above register */
queue & = 0x7 ;
switch ( option ) {
case REJECT_MAC_ADDR :
/* Clear accepts frame bit at specified Special DA table entry */
smc_table_reg =
MV_REG_READ ( ( MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE ( eth_port_num ) + tbl_offset ) ) ;
smc_table_reg & = ( 0x0E < < ( 8 * reg_offset ) ) ;
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE ( eth_port_num ) + tbl_offset ) , smc_table_reg ) ;
break ;
case ACCEPT_MAC_ADDR :
/* Set accepts frame bit at specified Special DA table entry */
smc_table_reg =
MV_REG_READ ( ( MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE ( eth_port_num ) + tbl_offset ) ) ;
smc_table_reg | = ( ( 0x01 | queue ) < < ( 8 * reg_offset ) ) ;
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE ( eth_port_num ) + tbl_offset ) , smc_table_reg ) ;
break ;
default :
return false ;
}
return true ;
}
/*******************************************************************************
* eth_port_omc_addr - Multicast address settings .
*
* DESCRIPTION :
* This routine controls the MV device Other MAC multicast support .
* The Other Multicast Table is used for multicast of another type .
* A CRC - 8 bit is used as an index to the Other Multicast Table entries
* in the DA - Filter table .
* The function gets the CRC - 8 bit value from the calling routine and
* set the Other Multicast Table appropriate entry according to the
* CRC - 8 argument given .
*
* INPUT :
* ETH_PORT eth_port_num Port number .
* unsigned char crc8 A CRC - 8 bit ( Polynomial : x ^ 8 + x ^ 2 + x ^ 1 + 1 ) .
* ETH_QUEUE queue Rx queue number for this MAC address .
* int option 0 = Add , 1 = remove address .
*
* OUTPUT :
* See description .
*
* RETURN :
* true is output succeeded .
* false if option parameter is invalid .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool eth_port_omc_addr ( ETH_PORT eth_port_num ,
unsigned char crc8 ,
ETH_QUEUE queue , int option )
{
unsigned int omc_table_reg ;
unsigned int tbl_offset ;
unsigned int reg_offset ;
/* Locate the OMC table entry */
tbl_offset = ( crc8 / 4 ) * 4 ; /* Register offset from OMC table base */
reg_offset = crc8 % 4 ; /* Entry offset within the above register */
queue & = 0x7 ;
switch ( option ) {
case REJECT_MAC_ADDR :
/* Clear accepts frame bit at specified Other DA table entry */
omc_table_reg =
MV_REG_READ ( ( MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE ( eth_port_num ) + tbl_offset ) ) ;
omc_table_reg & = ( 0x0E < < ( 8 * reg_offset ) ) ;
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE ( eth_port_num ) + tbl_offset ) , omc_table_reg ) ;
break ;
case ACCEPT_MAC_ADDR :
/* Set accepts frame bit at specified Other DA table entry */
omc_table_reg =
MV_REG_READ ( ( MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE ( eth_port_num ) + tbl_offset ) ) ;
omc_table_reg | = ( ( 0x01 | queue ) < < ( 8 * reg_offset ) ) ;
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE ( eth_port_num ) + tbl_offset ) , omc_table_reg ) ;
break ;
default :
return false ;
}
return true ;
}
# endif
/*******************************************************************************
* eth_port_init_mac_tables - Clear all entrance in the UC , SMC and OMC tables
*
* DESCRIPTION :
* Go through all the DA filter tables ( Unicast , Special Multicast & Other
* Multicast ) and set each entry to 0.
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
*
* OUTPUT :
* Multicast and Unicast packets are rejected .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void eth_port_init_mac_tables ( ETH_PORT eth_port_num )
{
int table_index ;
/* Clear DA filter unicast table (Ex_dFUT) */
for ( table_index = 0 ; table_index < = 0xC ; table_index + = 4 )
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_UNICAST_TABLE_BASE
( eth_port_num ) + table_index ) , 0 ) ;
for ( table_index = 0 ; table_index < = 0xFC ; table_index + = 4 ) {
/* Clear DA filter special multicast table (Ex_dFSMT) */
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE ( eth_port_num ) + table_index ) , 0 ) ;
/* Clear DA filter other multicast table (Ex_dFOMT) */
MV_REG_WRITE ( ( MV64460_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE ( eth_port_num ) + table_index ) , 0 ) ;
}
}
/*******************************************************************************
* eth_clear_mib_counters - Clear all MIB counters
*
* DESCRIPTION :
* This function clears all MIB counters of a specific ethernet port .
* A read from the MIB counter will reset the counter .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
*
* OUTPUT :
* After reading all MIB counters , the counters resets .
*
* RETURN :
* MIB counter value .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void eth_clear_mib_counters ( ETH_PORT eth_port_num )
{
int i ;
unsigned int dummy ;
/* Perform dummy reads from MIB counters */
for ( i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW ; i < ETH_MIB_LATE_COLLISION ;
i + = 4 )
dummy = MV_REG_READ ( ( MV64460_ETH_MIB_COUNTERS_BASE
( eth_port_num ) + i ) ) ;
return ;
}
/*******************************************************************************
* eth_read_mib_counter - Read a MIB counter
*
* DESCRIPTION :
* This function reads a MIB counter of a specific ethernet port .
* NOTE - If read from ETH_MIB_GOOD_OCTETS_RECEIVED_LOW , then the
* following read must be from ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH
* register . The same applies for ETH_MIB_GOOD_OCTETS_SENT_LOW and
* ETH_MIB_GOOD_OCTETS_SENT_HIGH
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
* unsigned int mib_offset MIB counter offset ( use ETH_MIB_ . . . macros ) .
*
* OUTPUT :
* After reading the MIB counter , the counter resets .
*
* RETURN :
* MIB counter value .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
unsigned int eth_read_mib_counter ( ETH_PORT eth_port_num ,
unsigned int mib_offset )
{
return ( MV_REG_READ ( MV64460_ETH_MIB_COUNTERS_BASE ( eth_port_num )
+ mib_offset ) ) ;
}
/*******************************************************************************
* ethernet_phy_set - Set the ethernet port PHY address .
*
* DESCRIPTION :
* This routine set the ethernet port PHY address according to given
* parameter .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
*
* OUTPUT :
* Set PHY Address Register with given PHY address parameter .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void ethernet_phy_set ( ETH_PORT eth_port_num , int phy_addr )
{
unsigned int reg_data ;
reg_data = MV_REG_READ ( MV64460_ETH_PHY_ADDR_REG ) ;
reg_data & = ~ ( 0x1F < < ( 5 * eth_port_num ) ) ;
reg_data | = ( phy_addr < < ( 5 * eth_port_num ) ) ;
MV_REG_WRITE ( MV64460_ETH_PHY_ADDR_REG , reg_data ) ;
return ;
}
/*******************************************************************************
* ethernet_phy_get - Get the ethernet port PHY address .
*
* DESCRIPTION :
* This routine returns the given ethernet port PHY address .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
*
* OUTPUT :
* None .
*
* RETURN :
* PHY address .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static int ethernet_phy_get ( ETH_PORT eth_port_num )
{
unsigned int reg_data ;
reg_data = MV_REG_READ ( MV64460_ETH_PHY_ADDR_REG ) ;
return ( ( reg_data > > ( 5 * eth_port_num ) ) & 0x1f ) ;
}
/*******************************************************************************
* ethernet_phy_reset - Reset Ethernet port PHY .
*
* DESCRIPTION :
* This routine utilize the SMI interface to reset the ethernet port PHY .
* The routine waits until the link is up again or link up is timeout .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
*
* OUTPUT :
* The ethernet port PHY renew its link .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool ethernet_phy_reset ( ETH_PORT eth_port_num )
{
unsigned int time_out = 50 ;
unsigned int phy_reg_data ;
/* Reset the PHY */
eth_port_read_smi_reg ( eth_port_num , 0 , & phy_reg_data ) ;
phy_reg_data | = 0x8000 ; /* Set bit 15 to reset the PHY */
eth_port_write_smi_reg ( eth_port_num , 0 , phy_reg_data ) ;
/* Poll on the PHY LINK */
do {
eth_port_read_smi_reg ( eth_port_num , 1 , & phy_reg_data ) ;
if ( time_out - - = = 0 )
return false ;
}
while ( ! ( phy_reg_data & 0x20 ) ) ;
return true ;
}
/*******************************************************************************
* eth_port_reset - Reset Ethernet port
*
* DESCRIPTION :
* This routine resets the chip by aborting any SDMA engine activity and
* clearing the MIB counters . The Receiver and the Transmit unit are in
* idle state after this command is performed and the port is disabled .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
*
* OUTPUT :
* Channel activity is halted .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void eth_port_reset ( ETH_PORT eth_port_num )
{
unsigned int reg_data ;
/* Stop Tx port activity. Check port Tx activity. */
reg_data =
MV_REG_READ ( MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG
( eth_port_num ) ) ;
if ( reg_data & 0xFF ) {
/* Issue stop command for active channels only */
MV_REG_WRITE ( MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG
( eth_port_num ) , ( reg_data < < 8 ) ) ;
/* Wait for all Tx activity to terminate. */
do {
/* Check port cause register that all Tx queues are stopped */
reg_data =
MV_REG_READ
( MV64460_ETH_TRANSMIT_QUEUE_COMMAND_REG
( eth_port_num ) ) ;
}
while ( reg_data & 0xFF ) ;
}
/* Stop Rx port activity. Check port Rx activity. */
reg_data =
MV_REG_READ ( MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG
( eth_port_num ) ) ;
if ( reg_data & 0xFF ) {
/* Issue stop command for active channels only */
MV_REG_WRITE ( MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG
( eth_port_num ) , ( reg_data < < 8 ) ) ;
/* Wait for all Rx activity to terminate. */
do {
/* Check port cause register that all Rx queues are stopped */
reg_data =
MV_REG_READ
( MV64460_ETH_RECEIVE_QUEUE_COMMAND_REG
( eth_port_num ) ) ;
}
while ( reg_data & 0xFF ) ;
}
/* Clear all MIB counters */
eth_clear_mib_counters ( eth_port_num ) ;
/* Reset the Enable bit in the Configuration Register */
reg_data =
MV_REG_READ ( MV64460_ETH_PORT_SERIAL_CONTROL_REG
( eth_port_num ) ) ;
reg_data & = ~ ETH_SERIAL_PORT_ENABLE ;
MV_REG_WRITE ( MV64460_ETH_PORT_SERIAL_CONTROL_REG ( eth_port_num ) ,
reg_data ) ;
return ;
}
#if 0 /* Not needed here */
/*******************************************************************************
* ethernet_set_config_reg - Set specified bits in configuration register .
*
* DESCRIPTION :
* This function sets specified bits in the given ethernet
* configuration register .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
* unsigned int value 32 bit value .
*
* OUTPUT :
* The set bits in the value parameter are set in the configuration
* register .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void ethernet_set_config_reg ( ETH_PORT eth_port_num ,
unsigned int value )
{
unsigned int eth_config_reg ;
eth_config_reg =
MV_REG_READ ( MV64460_ETH_PORT_CONFIG_REG ( eth_port_num ) ) ;
eth_config_reg | = value ;
MV_REG_WRITE ( MV64460_ETH_PORT_CONFIG_REG ( eth_port_num ) ,
eth_config_reg ) ;
return ;
}
# endif
#if 0 /* FIXME */
/*******************************************************************************
* ethernet_reset_config_reg - Reset specified bits in configuration register .
*
* DESCRIPTION :
* This function resets specified bits in the given Ethernet
* configuration register .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
* unsigned int value 32 bit value .
*
* OUTPUT :
* The set bits in the value parameter are reset in the configuration
* register .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void ethernet_reset_config_reg ( ETH_PORT eth_port_num ,
unsigned int value )
{
unsigned int eth_config_reg ;
eth_config_reg = MV_REG_READ ( MV64460_ETH_PORT_CONFIG_EXTEND_REG
( eth_port_num ) ) ;
eth_config_reg & = ~ value ;
MV_REG_WRITE ( MV64460_ETH_PORT_CONFIG_EXTEND_REG ( eth_port_num ) ,
eth_config_reg ) ;
return ;
}
# endif
#if 0 /* Not needed here */
/*******************************************************************************
* ethernet_get_config_reg - Get the port configuration register
*
* DESCRIPTION :
* This function returns the configuration register value of the given
* ethernet port .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
*
* OUTPUT :
* None .
*
* RETURN :
* Port configuration register value .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static unsigned int ethernet_get_config_reg ( ETH_PORT eth_port_num )
{
unsigned int eth_config_reg ;
eth_config_reg = MV_REG_READ ( MV64460_ETH_PORT_CONFIG_EXTEND_REG
( eth_port_num ) ) ;
return eth_config_reg ;
}
# endif
/*******************************************************************************
* eth_port_read_smi_reg - Read PHY registers
*
* DESCRIPTION :
* This routine utilize the SMI interface to interact with the PHY in
* order to perform PHY register read .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
* unsigned int phy_reg PHY register address offset .
* unsigned int * value Register value buffer .
*
* OUTPUT :
* Write the value of a specified PHY register into given buffer .
*
* RETURN :
* false if the PHY is busy or read data is not in valid state .
* true otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool eth_port_read_smi_reg ( ETH_PORT eth_port_num ,
unsigned int phy_reg , unsigned int * value )
{
unsigned int reg_value ;
unsigned int time_out = PHY_BUSY_TIMEOUT ;
int phy_addr ;
phy_addr = ethernet_phy_get ( eth_port_num ) ;
/* printf(" Phy-Port %d has addess %d \n",eth_port_num, phy_addr );*/
/* first check that it is not busy */
do {
reg_value = MV_REG_READ ( MV64460_ETH_SMI_REG ) ;
if ( time_out - - = = 0 ) {
return false ;
}
}
while ( reg_value & ETH_SMI_BUSY ) ;
/* not busy */
MV_REG_WRITE ( MV64460_ETH_SMI_REG ,
( phy_addr < < 16 ) | ( phy_reg < < 21 ) |
ETH_SMI_OPCODE_READ ) ;
time_out = PHY_BUSY_TIMEOUT ; /* initialize the time out var again */
do {
reg_value = MV_REG_READ ( MV64460_ETH_SMI_REG ) ;
if ( time_out - - = = 0 ) {
return false ;
}
}
while ( ( reg_value & ETH_SMI_READ_VALID ) ! = ETH_SMI_READ_VALID ) ; /* Bit set equ operation done */
/* Wait for the data to update in the SMI register */
# define PHY_UPDATE_TIMEOUT 10000
for ( time_out = 0 ; time_out < PHY_UPDATE_TIMEOUT ; time_out + + ) ;
reg_value = MV_REG_READ ( MV64460_ETH_SMI_REG ) ;
* value = reg_value & 0xffff ;
return true ;
}
/*******************************************************************************
* eth_port_write_smi_reg - Write to PHY registers
*
* DESCRIPTION :
* This routine utilize the SMI interface to interact with the PHY in
* order to perform writes to PHY registers .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
* unsigned int phy_reg PHY register address offset .
* unsigned int value Register value .
*
* OUTPUT :
* Write the given value to the specified PHY register .
*
* RETURN :
* false if the PHY is busy .
* true otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool eth_port_write_smi_reg ( ETH_PORT eth_port_num ,
unsigned int phy_reg , unsigned int value )
{
unsigned int reg_value ;
unsigned int time_out = PHY_BUSY_TIMEOUT ;
int phy_addr ;
phy_addr = ethernet_phy_get ( eth_port_num ) ;
/* first check that it is not busy */
do {
reg_value = MV_REG_READ ( MV64460_ETH_SMI_REG ) ;
if ( time_out - - = = 0 ) {
return false ;
}
}
while ( reg_value & ETH_SMI_BUSY ) ;
/* not busy */
MV_REG_WRITE ( MV64460_ETH_SMI_REG ,
( phy_addr < < 16 ) | ( phy_reg < < 21 ) |
ETH_SMI_OPCODE_WRITE | ( value & 0xffff ) ) ;
return true ;
}
/*******************************************************************************
* eth_set_access_control - Config address decode parameters for Ethernet unit
*
* DESCRIPTION :
* This function configures the address decode parameters for the Gigabit
* Ethernet Controller according the given parameters struct .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet Port number . See ETH_PORT enum .
* ETH_WIN_PARAM * param Address decode parameter struct .
*
* OUTPUT :
* An access window is opened using the given access parameters .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void eth_set_access_control ( ETH_PORT eth_port_num ,
ETH_WIN_PARAM * param )
{
unsigned int access_prot_reg ;
/* Set access control register */
access_prot_reg = MV_REG_READ ( MV64460_ETH_ACCESS_PROTECTION_REG
( eth_port_num ) ) ;
access_prot_reg & = ( ~ ( 3 < < ( param - > win * 2 ) ) ) ; /* clear window permission */
access_prot_reg | = ( param - > access_ctrl < < ( param - > win * 2 ) ) ;
MV_REG_WRITE ( MV64460_ETH_ACCESS_PROTECTION_REG ( eth_port_num ) ,
access_prot_reg ) ;
/* Set window Size reg (SR) */
MV_REG_WRITE ( ( MV64460_ETH_SIZE_REG_0 +
( ETH_SIZE_REG_GAP * param - > win ) ) ,
( ( ( param - > size / 0x10000 ) - 1 ) < < 16 ) ) ;
/* Set window Base address reg (BA) */
MV_REG_WRITE ( ( MV64460_ETH_BAR_0 + ( ETH_BAR_GAP * param - > win ) ) ,
( param - > target | param - > attributes | param - > base_addr ) ) ;
/* High address remap reg (HARR) */
if ( param - > win < 4 )
MV_REG_WRITE ( ( MV64460_ETH_HIGH_ADDR_REMAP_REG_0 +
( ETH_HIGH_ADDR_REMAP_REG_GAP * param - > win ) ) ,
param - > high_addr ) ;
/* Base address enable reg (BARER) */
if ( param - > enable = = 1 )
MV_RESET_REG_BITS ( MV64460_ETH_BASE_ADDR_ENABLE_REG ,
( 1 < < param - > win ) ) ;
else
MV_SET_REG_BITS ( MV64460_ETH_BASE_ADDR_ENABLE_REG ,
( 1 < < param - > win ) ) ;
}
/*******************************************************************************
* ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory .
*
* DESCRIPTION :
* This function prepares a Rx chained list of descriptors and packet
* buffers in a form of a ring . The routine must be called after port
* initialization routine and before port start routine .
* The Ethernet SDMA engine uses CPU bus addresses to access the various
* devices in the system ( i . e . DRAM ) . This function uses the ethernet
* struct ' virtual to physical ' routine ( set by the user ) to set the ring
* with physical addresses .
*
* INPUT :
* ETH_PORT_INFO * p_eth_port_ctrl Ethernet Port Control srtuct .
* ETH_QUEUE rx_queue Number of Rx queue .
* int rx_desc_num Number of Rx descriptors
* int rx_buff_size Size of Rx buffer
* unsigned int rx_desc_base_addr Rx descriptors memory area base addr .
* unsigned int rx_buff_base_addr Rx buffer memory area base addr .
*
* OUTPUT :
* The routine updates the Ethernet port control struct with information
* regarding the Rx descriptors and buffers .
*
* RETURN :
* false if the given descriptors memory area is not aligned according to
* Ethernet SDMA specifications .
* true otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool ether_init_rx_desc_ring ( ETH_PORT_INFO * p_eth_port_ctrl ,
ETH_QUEUE rx_queue ,
int rx_desc_num ,
int rx_buff_size ,
unsigned int rx_desc_base_addr ,
unsigned int rx_buff_base_addr )
{
ETH_RX_DESC * p_rx_desc ;
ETH_RX_DESC * p_rx_prev_desc ; /* pointer to link with the last descriptor */
unsigned int buffer_addr ;
int ix ; /* a counter */
p_rx_desc = ( ETH_RX_DESC * ) rx_desc_base_addr ;
p_rx_prev_desc = p_rx_desc ;
buffer_addr = rx_buff_base_addr ;
/* Rx desc Must be 4LW aligned (i.e. Descriptor_Address[3:0]=0000). */
if ( rx_buff_base_addr & 0xF )
return false ;
/* Rx buffers are limited to 64K bytes and Minimum size is 8 bytes */
if ( ( rx_buff_size < 8 ) | | ( rx_buff_size > RX_BUFFER_MAX_SIZE ) )
return false ;
/* Rx buffers must be 64-bit aligned. */
if ( ( rx_buff_base_addr + rx_buff_size ) & 0x7 )
return false ;
/* initialize the Rx descriptors ring */
for ( ix = 0 ; ix < rx_desc_num ; ix + + ) {
p_rx_desc - > buf_size = rx_buff_size ;
p_rx_desc - > byte_cnt = 0x0000 ;
p_rx_desc - > cmd_sts =
ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT ;
p_rx_desc - > next_desc_ptr =
( ( unsigned int ) p_rx_desc ) + RX_DESC_ALIGNED_SIZE ;
p_rx_desc - > buf_ptr = buffer_addr ;
p_rx_desc - > return_info = 0x00000000 ;
D_CACHE_FLUSH_LINE ( p_rx_desc , 0 ) ;
buffer_addr + = rx_buff_size ;
p_rx_prev_desc = p_rx_desc ;
p_rx_desc = ( ETH_RX_DESC * )
( ( unsigned int ) p_rx_desc + RX_DESC_ALIGNED_SIZE ) ;
}
/* Closing Rx descriptors ring */
p_rx_prev_desc - > next_desc_ptr = ( rx_desc_base_addr ) ;
D_CACHE_FLUSH_LINE ( p_rx_prev_desc , 0 ) ;
/* Save Rx desc pointer to driver struct. */
CURR_RFD_SET ( ( ETH_RX_DESC * ) rx_desc_base_addr , rx_queue ) ;
USED_RFD_SET ( ( ETH_RX_DESC * ) rx_desc_base_addr , rx_queue ) ;
p_eth_port_ctrl - > p_rx_desc_area_base [ rx_queue ] =
( ETH_RX_DESC * ) rx_desc_base_addr ;
p_eth_port_ctrl - > rx_desc_area_size [ rx_queue ] =
rx_desc_num * RX_DESC_ALIGNED_SIZE ;
p_eth_port_ctrl - > port_rx_queue_command | = ( 1 < < rx_queue ) ;
return true ;
}
/*******************************************************************************
* ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory .
*
* DESCRIPTION :
* This function prepares a Tx chained list of descriptors and packet
* buffers in a form of a ring . The routine must be called after port
* initialization routine and before port start routine .
* The Ethernet SDMA engine uses CPU bus addresses to access the various
* devices in the system ( i . e . DRAM ) . This function uses the ethernet
* struct ' virtual to physical ' routine ( set by the user ) to set the ring
* with physical addresses .
*
* INPUT :
* ETH_PORT_INFO * p_eth_port_ctrl Ethernet Port Control srtuct .
* ETH_QUEUE tx_queue Number of Tx queue .
* int tx_desc_num Number of Tx descriptors
* int tx_buff_size Size of Tx buffer
* unsigned int tx_desc_base_addr Tx descriptors memory area base addr .
* unsigned int tx_buff_base_addr Tx buffer memory area base addr .
*
* OUTPUT :
* The routine updates the Ethernet port control struct with information
* regarding the Tx descriptors and buffers .
*
* RETURN :
* false if the given descriptors memory area is not aligned according to
* Ethernet SDMA specifications .
* true otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static bool ether_init_tx_desc_ring ( ETH_PORT_INFO * p_eth_port_ctrl ,
ETH_QUEUE tx_queue ,
int tx_desc_num ,
int tx_buff_size ,
unsigned int tx_desc_base_addr ,
unsigned int tx_buff_base_addr )
{
ETH_TX_DESC * p_tx_desc ;
ETH_TX_DESC * p_tx_prev_desc ;
unsigned int buffer_addr ;
int ix ; /* a counter */
/* save the first desc pointer to link with the last descriptor */
p_tx_desc = ( ETH_TX_DESC * ) tx_desc_base_addr ;
p_tx_prev_desc = p_tx_desc ;
buffer_addr = tx_buff_base_addr ;
/* Tx desc Must be 4LW aligned (i.e. Descriptor_Address[3:0]=0000). */
if ( tx_buff_base_addr & 0xF )
return false ;
/* Tx buffers are limited to 64K bytes and Minimum size is 8 bytes */
if ( ( tx_buff_size > TX_BUFFER_MAX_SIZE )
| | ( tx_buff_size < TX_BUFFER_MIN_SIZE ) )
return false ;
/* Initialize the Tx descriptors ring */
for ( ix = 0 ; ix < tx_desc_num ; ix + + ) {
p_tx_desc - > byte_cnt = 0x0000 ;
p_tx_desc - > l4i_chk = 0x0000 ;
p_tx_desc - > cmd_sts = 0x00000000 ;
p_tx_desc - > next_desc_ptr =
( ( unsigned int ) p_tx_desc ) + TX_DESC_ALIGNED_SIZE ;
p_tx_desc - > buf_ptr = buffer_addr ;
p_tx_desc - > return_info = 0x00000000 ;
D_CACHE_FLUSH_LINE ( p_tx_desc , 0 ) ;
buffer_addr + = tx_buff_size ;
p_tx_prev_desc = p_tx_desc ;
p_tx_desc = ( ETH_TX_DESC * )
( ( unsigned int ) p_tx_desc + TX_DESC_ALIGNED_SIZE ) ;
}
/* Closing Tx descriptors ring */
p_tx_prev_desc - > next_desc_ptr = tx_desc_base_addr ;
D_CACHE_FLUSH_LINE ( p_tx_prev_desc , 0 ) ;
/* Set Tx desc pointer in driver struct. */
CURR_TFD_SET ( ( ETH_TX_DESC * ) tx_desc_base_addr , tx_queue ) ;
USED_TFD_SET ( ( ETH_TX_DESC * ) tx_desc_base_addr , tx_queue ) ;
/* Init Tx ring base and size parameters */
p_eth_port_ctrl - > p_tx_desc_area_base [ tx_queue ] =
( ETH_TX_DESC * ) tx_desc_base_addr ;
p_eth_port_ctrl - > tx_desc_area_size [ tx_queue ] =
( tx_desc_num * TX_DESC_ALIGNED_SIZE ) ;
/* Add the queue to the list of Tx queues of this port */
p_eth_port_ctrl - > port_tx_queue_command | = ( 1 < < tx_queue ) ;
return true ;
}
/*******************************************************************************
* eth_port_send - Send an Ethernet packet
*
* DESCRIPTION :
* This routine send a given packet described by p_pktinfo parameter . It
* supports transmitting of a packet spaned over multiple buffers . The
* routine updates ' curr ' and ' first ' indexes according to the packet
* segment passed to the routine . In case the packet segment is first ,
* the ' first ' index is update . In any case , the ' curr ' index is updated .
* If the routine get into Tx resource error it assigns ' curr ' index as
* ' first ' . This way the function can abort Tx process of multiple
* descriptors per packet .
*
* INPUT :
* ETH_PORT_INFO * p_eth_port_ctrl Ethernet Port Control srtuct .
* ETH_QUEUE tx_queue Number of Tx queue .
* PKT_INFO * p_pkt_info User packet buffer .
*
* OUTPUT :
* Tx ring ' curr ' and ' first ' indexes are updated .
*
* RETURN :
* ETH_QUEUE_FULL in case of Tx resource error .
* ETH_ERROR in case the routine can not access Tx desc ring .
* ETH_QUEUE_LAST_RESOURCE if the routine uses the last Tx resource .
* ETH_OK otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static ETH_FUNC_RET_STATUS eth_port_send ( ETH_PORT_INFO * p_eth_port_ctrl ,
ETH_QUEUE tx_queue ,
PKT_INFO * p_pkt_info )
{
volatile ETH_TX_DESC * p_tx_desc_first ;
volatile ETH_TX_DESC * p_tx_desc_curr ;
volatile ETH_TX_DESC * p_tx_next_desc_curr ;
volatile ETH_TX_DESC * p_tx_desc_used ;
unsigned int command_status ;
/* Do not process Tx ring in case of Tx ring resource error */
if ( p_eth_port_ctrl - > tx_resource_err [ tx_queue ] = = true )
return ETH_QUEUE_FULL ;
/* Get the Tx Desc ring indexes */
CURR_TFD_GET ( p_tx_desc_curr , tx_queue ) ;
USED_TFD_GET ( p_tx_desc_used , tx_queue ) ;
if ( p_tx_desc_curr = = NULL )
return ETH_ERROR ;
/* The following parameters are used to save readings from memory */
p_tx_next_desc_curr = TX_NEXT_DESC_PTR ( p_tx_desc_curr , tx_queue ) ;
command_status = p_pkt_info - > cmd_sts | ETH_ZERO_PADDING | ETH_GEN_CRC ;
if ( command_status & ( ETH_TX_FIRST_DESC ) ) {
/* Update first desc */
FIRST_TFD_SET ( p_tx_desc_curr , tx_queue ) ;
p_tx_desc_first = p_tx_desc_curr ;
} else {
FIRST_TFD_GET ( p_tx_desc_first , tx_queue ) ;
command_status | = ETH_BUFFER_OWNED_BY_DMA ;
}
/* Buffers with a payload smaller than 8 bytes must be aligned to 64-bit */
/* boundary. We use the memory allocated for Tx descriptor. This memory */
/* located in TX_BUF_OFFSET_IN_DESC offset within the Tx descriptor. */
if ( p_pkt_info - > byte_cnt < = 8 ) {
printf ( " You have failed in the < 8 bytes errata - fixme \n " ) ; /* RABEEH - TBD */
return ETH_ERROR ;
p_tx_desc_curr - > buf_ptr =
( unsigned int ) p_tx_desc_curr + TX_BUF_OFFSET_IN_DESC ;
eth_b_copy ( p_pkt_info - > buf_ptr , p_tx_desc_curr - > buf_ptr ,
p_pkt_info - > byte_cnt ) ;
} else
p_tx_desc_curr - > buf_ptr = p_pkt_info - > buf_ptr ;
p_tx_desc_curr - > byte_cnt = p_pkt_info - > byte_cnt ;
p_tx_desc_curr - > return_info = p_pkt_info - > return_info ;
if ( p_pkt_info - > cmd_sts & ( ETH_TX_LAST_DESC ) ) {
/* Set last desc with DMA ownership and interrupt enable. */
p_tx_desc_curr - > cmd_sts = command_status |
ETH_BUFFER_OWNED_BY_DMA | ETH_TX_ENABLE_INTERRUPT ;
if ( p_tx_desc_curr ! = p_tx_desc_first )
p_tx_desc_first - > cmd_sts | = ETH_BUFFER_OWNED_BY_DMA ;
/* Flush CPU pipe */
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_tx_desc_curr , 0 ) ;
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_tx_desc_first , 0 ) ;
CPU_PIPE_FLUSH ;
/* Apply send command */
ETH_ENABLE_TX_QUEUE ( tx_queue , p_eth_port_ctrl - > port_num ) ;
/* Finish Tx packet. Update first desc in case of Tx resource error */
p_tx_desc_first = p_tx_next_desc_curr ;
FIRST_TFD_SET ( p_tx_desc_first , tx_queue ) ;
} else {
p_tx_desc_curr - > cmd_sts = command_status ;
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_tx_desc_curr , 0 ) ;
}
/* Check for ring index overlap in the Tx desc ring */
if ( p_tx_next_desc_curr = = p_tx_desc_used ) {
/* Update the current descriptor */
CURR_TFD_SET ( p_tx_desc_first , tx_queue ) ;
p_eth_port_ctrl - > tx_resource_err [ tx_queue ] = true ;
return ETH_QUEUE_LAST_RESOURCE ;
} else {
/* Update the current descriptor */
CURR_TFD_SET ( p_tx_next_desc_curr , tx_queue ) ;
return ETH_OK ;
}
}
/*******************************************************************************
* eth_tx_return_desc - Free all used Tx descriptors
*
* DESCRIPTION :
* This routine returns the transmitted packet information to the caller .
* It uses the ' first ' index to support Tx desc return in case a transmit
* of a packet spanned over multiple buffer still in process .
* In case the Tx queue was in " resource error " condition , where there are
* no available Tx resources , the function resets the resource error flag .
*
* INPUT :
* ETH_PORT_INFO * p_eth_port_ctrl Ethernet Port Control srtuct .
* ETH_QUEUE tx_queue Number of Tx queue .
* PKT_INFO * p_pkt_info User packet buffer .
*
* OUTPUT :
* Tx ring ' first ' and ' used ' indexes are updated .
*
* RETURN :
* ETH_ERROR in case the routine can not access Tx desc ring .
* ETH_RETRY in case there is transmission in process .
* ETH_END_OF_JOB if the routine has nothing to release .
* ETH_OK otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static ETH_FUNC_RET_STATUS eth_tx_return_desc ( ETH_PORT_INFO *
p_eth_port_ctrl ,
ETH_QUEUE tx_queue ,
PKT_INFO * p_pkt_info )
{
volatile ETH_TX_DESC * p_tx_desc_used = NULL ;
volatile ETH_TX_DESC * p_tx_desc_first = NULL ;
unsigned int command_status ;
/* Get the Tx Desc ring indexes */
USED_TFD_GET ( p_tx_desc_used , tx_queue ) ;
FIRST_TFD_GET ( p_tx_desc_first , tx_queue ) ;
/* Sanity check */
if ( p_tx_desc_used = = NULL )
return ETH_ERROR ;
command_status = p_tx_desc_used - > cmd_sts ;
/* Still transmitting... */
if ( command_status & ( ETH_BUFFER_OWNED_BY_DMA ) ) {
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_tx_desc_used , 0 ) ;
return ETH_RETRY ;
}
/* Stop release. About to overlap the current available Tx descriptor */
if ( ( p_tx_desc_used = = p_tx_desc_first ) & &
( p_eth_port_ctrl - > tx_resource_err [ tx_queue ] = = false ) ) {
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_tx_desc_used , 0 ) ;
return ETH_END_OF_JOB ;
}
/* Pass the packet information to the caller */
p_pkt_info - > cmd_sts = command_status ;
p_pkt_info - > return_info = p_tx_desc_used - > return_info ;
p_tx_desc_used - > return_info = 0 ;
/* Update the next descriptor to release. */
USED_TFD_SET ( TX_NEXT_DESC_PTR ( p_tx_desc_used , tx_queue ) , tx_queue ) ;
/* Any Tx return cancels the Tx resource error status */
if ( p_eth_port_ctrl - > tx_resource_err [ tx_queue ] = = true )
p_eth_port_ctrl - > tx_resource_err [ tx_queue ] = false ;
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_tx_desc_used , 0 ) ;
return ETH_OK ;
}
/*******************************************************************************
* eth_port_receive - Get received information from Rx ring .
*
* DESCRIPTION :
* This routine returns the received data to the caller . There is no
* data copying during routine operation . All information is returned
* using pointer to packet information struct passed from the caller .
* If the routine exhausts Rx ring resources then the resource error flag
* is set .
*
* INPUT :
* ETH_PORT_INFO * p_eth_port_ctrl Ethernet Port Control srtuct .
* ETH_QUEUE rx_queue Number of Rx queue .
* PKT_INFO * p_pkt_info User packet buffer .
*
* OUTPUT :
* Rx ring current and used indexes are updated .
*
* RETURN :
* ETH_ERROR in case the routine can not access Rx desc ring .
* ETH_QUEUE_FULL if Rx ring resources are exhausted .
* ETH_END_OF_JOB if there is no received data .
* ETH_OK otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static ETH_FUNC_RET_STATUS eth_port_receive ( ETH_PORT_INFO * p_eth_port_ctrl ,
ETH_QUEUE rx_queue ,
PKT_INFO * p_pkt_info )
{
volatile ETH_RX_DESC * p_rx_curr_desc ;
volatile ETH_RX_DESC * p_rx_next_curr_desc ;
volatile ETH_RX_DESC * p_rx_used_desc ;
unsigned int command_status ;
/* Do not process Rx ring in case of Rx ring resource error */
if ( p_eth_port_ctrl - > rx_resource_err [ rx_queue ] = = true ) {
printf ( " \n Rx Queue is full ... \n " ) ;
return ETH_QUEUE_FULL ;
}
/* Get the Rx Desc ring 'curr and 'used' indexes */
CURR_RFD_GET ( p_rx_curr_desc , rx_queue ) ;
USED_RFD_GET ( p_rx_used_desc , rx_queue ) ;
/* Sanity check */
if ( p_rx_curr_desc = = NULL )
return ETH_ERROR ;
/* The following parameters are used to save readings from memory */
p_rx_next_curr_desc = RX_NEXT_DESC_PTR ( p_rx_curr_desc , rx_queue ) ;
command_status = p_rx_curr_desc - > cmd_sts ;
/* Nothing to receive... */
if ( command_status & ( ETH_BUFFER_OWNED_BY_DMA ) ) {
/* DP(printf("Rx: command_status: %08x\n", command_status)); */
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_rx_curr_desc , 0 ) ;
/* DP(printf("\nETH_END_OF_JOB ...\n"));*/
return ETH_END_OF_JOB ;
}
p_pkt_info - > byte_cnt = ( p_rx_curr_desc - > byte_cnt ) - RX_BUF_OFFSET ;
p_pkt_info - > cmd_sts = command_status ;
p_pkt_info - > buf_ptr = ( p_rx_curr_desc - > buf_ptr ) + RX_BUF_OFFSET ;
p_pkt_info - > return_info = p_rx_curr_desc - > return_info ;
p_pkt_info - > l4i_chk = p_rx_curr_desc - > buf_size ; /* IP fragment indicator */
/* Clean the return info field to indicate that the packet has been */
/* moved to the upper layers */
p_rx_curr_desc - > return_info = 0 ;
/* Update 'curr' in data structure */
CURR_RFD_SET ( p_rx_next_curr_desc , rx_queue ) ;
/* Rx descriptors resource exhausted. Set the Rx ring resource error flag */
if ( p_rx_next_curr_desc = = p_rx_used_desc )
p_eth_port_ctrl - > rx_resource_err [ rx_queue ] = true ;
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_rx_curr_desc , 0 ) ;
CPU_PIPE_FLUSH ;
return ETH_OK ;
}
/*******************************************************************************
* eth_rx_return_buff - Returns a Rx buffer back to the Rx ring .
*
* DESCRIPTION :
* This routine returns a Rx buffer back to the Rx ring . It retrieves the
* next ' used ' descriptor and attached the returned buffer to it .
* In case the Rx ring was in " resource error " condition , where there are
* no available Rx resources , the function resets the resource error flag .
*
* INPUT :
* ETH_PORT_INFO * p_eth_port_ctrl Ethernet Port Control srtuct .
* ETH_QUEUE rx_queue Number of Rx queue .
* PKT_INFO * p_pkt_info Information on the returned buffer .
*
* OUTPUT :
* New available Rx resource in Rx descriptor ring .
*
* RETURN :
* ETH_ERROR in case the routine can not access Rx desc ring .
* ETH_OK otherwise .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static ETH_FUNC_RET_STATUS eth_rx_return_buff ( ETH_PORT_INFO *
p_eth_port_ctrl ,
ETH_QUEUE rx_queue ,
PKT_INFO * p_pkt_info )
{
volatile ETH_RX_DESC * p_used_rx_desc ; /* Where to return Rx resource */
/* Get 'used' Rx descriptor */
USED_RFD_GET ( p_used_rx_desc , rx_queue ) ;
/* Sanity check */
if ( p_used_rx_desc = = NULL )
return ETH_ERROR ;
p_used_rx_desc - > buf_ptr = p_pkt_info - > buf_ptr ;
p_used_rx_desc - > return_info = p_pkt_info - > return_info ;
p_used_rx_desc - > byte_cnt = p_pkt_info - > byte_cnt ;
p_used_rx_desc - > buf_size = MV64460_RX_BUFFER_SIZE ; /* Reset Buffer size */
/* Flush the write pipe */
CPU_PIPE_FLUSH ;
/* Return the descriptor to DMA ownership */
p_used_rx_desc - > cmd_sts =
ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT ;
/* Flush descriptor and CPU pipe */
D_CACHE_FLUSH_LINE ( ( unsigned int ) p_used_rx_desc , 0 ) ;
CPU_PIPE_FLUSH ;
/* Move the used descriptor pointer to the next descriptor */
USED_RFD_SET ( RX_NEXT_DESC_PTR ( p_used_rx_desc , rx_queue ) , rx_queue ) ;
/* Any Rx return cancels the Rx resource error status */
if ( p_eth_port_ctrl - > rx_resource_err [ rx_queue ] = = true )
p_eth_port_ctrl - > rx_resource_err [ rx_queue ] = false ;
return ETH_OK ;
}
/*******************************************************************************
* eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path
*
* DESCRIPTION :
* This routine sets the RX coalescing interrupt mechanism parameter .
* This parameter is a timeout counter , that counts in 64 t_clk
* chunks ; that when timeout event occurs a maskable interrupt
* occurs .
* The parameter is calculated using the tClk of the MV - 643 xx chip
* , and the required delay of the interrupt in usec .
*
* INPUT :
* ETH_PORT eth_port_num Ethernet port number
* unsigned int t_clk t_clk of the MV - 643 xx chip in HZ units
* unsigned int delay Delay in usec
*
* OUTPUT :
* Interrupt coalescing mechanism value is set in MV - 643 xx chip .
*
* RETURN :
* The interrupt coalescing value set in the gigE port .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#if 0 /* FIXME */
static unsigned int eth_port_set_rx_coal ( ETH_PORT eth_port_num ,
unsigned int t_clk ,
unsigned int delay )
{
unsigned int coal ;
coal = ( ( t_clk / 1000000 ) * delay ) / 64 ;
/* Set RX Coalescing mechanism */
MV_REG_WRITE ( MV64460_ETH_SDMA_CONFIG_REG ( eth_port_num ) ,
( ( coal & 0x3fff ) < < 8 ) |
( MV_REG_READ
( MV64460_ETH_SDMA_CONFIG_REG ( eth_port_num ) )
& 0xffc000ff ) ) ;
return coal ;
}
# endif
/*******************************************************************************
* eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path
*
* DESCRIPTION :
* This routine sets the TX coalescing interrupt mechanism parameter .
* This parameter is a timeout counter , that counts in 64 t_clk
* chunks ; that when timeout event occurs a maskable interrupt
* occurs .
* The parameter is calculated using the t_cLK frequency of the
* MV - 643 xx chip and the required delay in the interrupt in uSec
*
* INPUT :
* ETH_PORT eth_port_num Ethernet port number
* unsigned int t_clk t_clk of the MV - 643 xx chip in HZ units
* unsigned int delay Delay in uSeconds
*
* OUTPUT :
* Interrupt coalescing mechanism value is set in MV - 643 xx chip .
*
* RETURN :
* The interrupt coalescing value set in the gigE port .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#if 0 /* FIXME */
static unsigned int eth_port_set_tx_coal ( ETH_PORT eth_port_num ,
unsigned int t_clk ,
unsigned int delay )
{
unsigned int coal ;
coal = ( ( t_clk / 1000000 ) * delay ) / 64 ;
/* Set TX Coalescing mechanism */
MV_REG_WRITE ( MV64460_ETH_TX_FIFO_URGENT_THRESHOLD_REG ( eth_port_num ) ,
coal < < 4 ) ;
return coal ;
}
# endif
/*******************************************************************************
* eth_b_copy - Copy bytes from source to destination
*
* DESCRIPTION :
* This function supports the eight bytes limitation on Tx buffer size .
* The routine will zero eight bytes starting from the destination address
* followed by copying bytes from the source address to the destination .
*
* INPUT :
* unsigned int src_addr 32 bit source address .
* unsigned int dst_addr 32 bit destination address .
* int byte_count Number of bytes to copy .
*
* OUTPUT :
* See description .
*
* RETURN :
* None .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
static void eth_b_copy ( unsigned int src_addr , unsigned int dst_addr ,
int byte_count )
{
/* Zero the dst_addr area */
* ( unsigned int * ) dst_addr = 0x0 ;
while ( byte_count ! = 0 ) {
* ( char * ) dst_addr = * ( char * ) src_addr ;
dst_addr + + ;
src_addr + + ;
byte_count - - ;
}
}
