/* rx ***********************************************************************/
static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev);
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port Control srtuct.
- * struct pkt_info *p_pkt_info Information on 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 FUNC_RET_STATUS rx_return_buff(struct mv643xx_eth_private *mp,
struct pkt_info *p_pkt_info)
{
return ETH_OK;
}
-/*
- * mv643xx_eth_rx_refill_descs
- *
- * Fills / refills RX queue on a certain gigabit ethernet port
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
static void mv643xx_eth_rx_refill_descs(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
}
}
-/*
- * mv643xx_eth_rx_refill_descs_timer_wrapper
- *
- * Timer routine to wake up RX queue filling task. This function is
- * used only in case the RX queue is empty, and all alloc_skb has
- * failed (due to out of memory event).
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data)
{
mv643xx_eth_rx_refill_descs((struct net_device *)data);
}
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port Control srtuct.
- * struct 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 FUNC_RET_STATUS port_receive(struct mv643xx_eth_private *mp,
struct pkt_info *p_pkt_info)
{
return ETH_OK;
}
-/*
- * mv643xx_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
- */
static int mv643xx_eth_receive_queue(struct net_device *dev, int budget)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
}
#ifdef MV643XX_ETH_NAPI
-/*
- * mv643xx_eth_poll
- *
- * This function is used in case of NAPI
- */
static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
{
struct mv643xx_eth_private *mp = container_of(napi, struct mv643xx_eth_private, napi);
/* tx ***********************************************************************/
-/**
- * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments
- *
- * Hardware can't handle unaligned fragments smaller than 9 bytes.
- * This helper function detects that case.
- */
-
static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
{
unsigned int frag;
return 0;
}
-/**
- * alloc_tx_desc_index - return the index of the next available tx desc
- */
static int alloc_tx_desc_index(struct mv643xx_eth_private *mp)
{
int tx_desc_curr;
return tx_desc_curr;
}
-/**
- * tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments.
- *
- * Ensure the data for each fragment to be transmitted is mapped properly,
- * then fill in descriptors in the tx hw queue.
- */
static void tx_fill_frag_descs(struct mv643xx_eth_private *mp,
struct sk_buff *skb)
{
return (__force __be16)sum;
}
-/**
- * tx_submit_descs_for_skb - submit data from an skb to the tx hw
- *
- * Ensure the data for an skb to be transmitted is mapped properly,
- * then fill in descriptors in the tx hw queue and start the hardware.
- */
static void tx_submit_descs_for_skb(struct mv643xx_eth_private *mp,
struct sk_buff *skb)
{
mp->tx_desc_count += nr_frags + 1;
}
-/**
- * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission
- *
- */
static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
/* mii management interface *************************************************/
static int phy_addr_get(struct mv643xx_eth_private *mp);
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port.
- * 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 void read_smi_reg(struct mv643xx_eth_private *mp,
unsigned int phy_reg, unsigned int *value)
{
spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
}
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port.
- * 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 void write_smi_reg(struct mv643xx_eth_private *mp,
unsigned int phy_reg, unsigned int value)
{
/* mib counters *************************************************************/
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port.
- *
- * OUTPUT:
- * After reading all MIB counters, the counters resets.
- *
- * RETURN:
- * MIB counter value.
- *
- */
static void clear_mib_counters(struct mv643xx_eth_private *mp)
{
unsigned int port_num = mp->port_num;
/* address handling *********************************************************/
-/*
- * uc_addr_get - Read the MAC address from the port's hw registers
- */
static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *p_addr)
{
unsigned int port_num = mp->port_num;
p_addr[5] = mac_l & 0xff;
}
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port.
- *
- * OUTPUT:
- * Multicast and Unicast packets are rejected.
- *
- * RETURN:
- * None.
- */
static void init_mac_tables(struct mv643xx_eth_private *mp)
{
unsigned int port_num = mp->port_num;
}
}
-/*
- * The entries in each table are indexed by a hash of a packet's MAC
- * address. One bit in each entry determines whether the packet is
- * accepted. There are 4 entries (each 8 bits wide) in each register
- * of the table. The bits in each entry are defined as follows:
- * 0 Accept=1, Drop=0
- * 3-1 Queue (ETH_Q0=0)
- * 7-4 Reserved = 0;
- */
static void set_filter_table_entry(struct mv643xx_eth_private *mp,
int table, unsigned char entry)
{
wrl(mp, table + tbl_offset, table_reg);
}
-/*
- * uc_addr_set - Write a MAC address into the port's hw registers
- */
static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *p_addr)
{
unsigned int port_num = mp->port_num;
set_filter_table_entry(mp, table, p_addr[5] & 0x0f);
}
-/*
- * mv643xx_eth_update_mac_address
- *
- * Update the MAC address of the port in the address table
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
static void mv643xx_eth_update_mac_address(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
uc_addr_set(mp, dev->dev_addr);
}
-/*
- * mv643xx_eth_set_mac_address
- *
- * Change the interface's mac address.
- * No special hardware thing should be done because interface is always
- * put in promiscuous mode.
- *
- * Input : pointer to ethernet interface network device structure and
- * a pointer to the designated entry to be added to the cache.
- * Output : zero upon success, negative upon failure
- */
static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
{
int i;
return 0;
}
-/*
- * mc_addr - Multicast address settings.
- *
- * 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 0x_FF).
- * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
- * Table entries in the DA-Filter table.
- * 2) Other Multicast Table for multicast of another type. A CRC-8bit
- * is used as an index to the Other Multicast Table entries in the
- * DA-Filter table. This function calculates the CRC-8bit value.
- * In either case, set_filter_table_entry() is then called
- * to set to set the actual table entry.
- */
static void mc_addr(struct mv643xx_eth_private *mp, unsigned char *p_addr)
{
unsigned int port_num = mp->port_num;
set_filter_table_entry(mp, table, crc_result);
}
-/*
- * Set the entire multicast list based on dev->mc_list.
- */
static void set_multicast_list(struct net_device *dev)
{
mc_addr(mp, mc_list->dmi_addr);
}
-/*
- * mv643xx_eth_set_rx_mode
- *
- * Change from promiscuos to regular rx mode
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
static void mv643xx_eth_set_rx_mode(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
/* rx/tx queue initialisation ***********************************************/
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port Control srtuct.
- *
- * OUTPUT:
- * The routine updates the Ethernet port control struct with information
- * regarding the Rx descriptors and buffers.
- *
- * RETURN:
- * None.
- */
static void ether_init_rx_desc_ring(struct mv643xx_eth_private *mp)
{
volatile struct rx_desc *p_rx_desc;
mp->p_rx_desc_area, mp->rx_desc_dma);
}
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port Control srtuct.
- *
- * OUTPUT:
- * The routine updates the Ethernet port control struct with information
- * regarding the Tx descriptors and buffers.
- *
- * RETURN:
- * None.
- */
static void ether_init_tx_desc_ring(struct mv643xx_eth_private *mp)
{
int tx_desc_num = mp->tx_ring_size;
mp->tx_desc_area_size = tx_desc_num * sizeof(struct tx_desc);
}
-/**
- * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors
- *
- * If force is non-zero, frees uncompleted descriptors as well
- */
static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
/* netdev ops and related ***************************************************/
static void port_reset(struct mv643xx_eth_private *mp);
-/* Set the mv643xx port configuration register for the speed/duplex mode. */
static void mv643xx_eth_update_pscr(struct net_device *dev,
struct ethtool_cmd *ecmd)
{
}
}
-/*
- * mv643xx_eth_int_handler
- *
- * Main interrupt handler for the gigbit ethernet ports
- *
- * Input : irq - irq number (not used)
- * dev_id - a pointer to the required interface's data structure
- * regs - not used
- * Output : N/A
- */
-
static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *)dev_id;
return IRQ_HANDLED;
}
-/*
- * phy_reset - Reset Ethernet port PHY.
- *
- * DESCRIPTION:
- * This routine utilizes the SMI interface to reset the ethernet port PHY.
- *
- * INPUT:
- * struct mv643xx_eth_private *mp Ethernet Port.
- *
- * OUTPUT:
- * The PHY is reset.
- *
- * RETURN:
- * None.
- *
- */
static void phy_reset(struct mv643xx_eth_private *mp)
{
unsigned int phy_reg_data;
} while (phy_reg_data & 0x8000);
}
-/*
- * 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:
- * dev - a pointer to the required interface
- *
- * OUTPUT:
- * Ethernet port is ready to receive and transmit.
- *
- * RETURN:
- * None.
- */
static void port_start(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
}
#ifdef MV643XX_ETH_COAL
-
-/*
- * 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-643xx chip
- * , and the required delay of the interrupt in usec.
- *
- * INPUT:
- * struct mv643xx_eth_private *mp Ethernet port
- * unsigned int delay Delay in usec
- *
- * OUTPUT:
- * Interrupt coalescing mechanism value is set in MV-643xx chip.
- *
- * RETURN:
- * The interrupt coalescing value set in the gigE port.
- *
- */
static unsigned int set_rx_coal(struct mv643xx_eth_private *mp,
unsigned int delay)
{
}
#endif
-/*
- * 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-643xx chip and the required delay in the interrupt in uSec
- *
- * INPUT:
- * struct mv643xx_eth_private *mp Ethernet port
- * unsigned int delay Delay in uSeconds
- *
- * OUTPUT:
- * Interrupt coalescing mechanism value is set in MV-643xx chip.
- *
- * RETURN:
- * The interrupt coalescing value set in the gigE port.
- *
- */
static unsigned int set_tx_coal(struct mv643xx_eth_private *mp,
unsigned int delay)
{
return coal;
}
-/*
- * 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 port_start routine and after
- * setting user values in the user fields of Ethernet port control
- * struct.
- *
- * INPUT:
- * struct mv643xx_eth_private *mp Ethernet port control struct
- *
- * OUTPUT:
- * See description.
- *
- * RETURN:
- * None.
- */
static void port_init(struct mv643xx_eth_private *mp)
{
mp->rx_resource_err = 0;
init_mac_tables(mp);
}
-/*
- * mv643xx_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
- *
- * Output : zero of success , nonzero if fails.
- */
-
static int mv643xx_eth_open(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
return err;
}
-/*
- * 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:
- * struct mv643xx_eth_private *mp Ethernet Port.
- *
- * OUTPUT:
- * Channel activity is halted.
- *
- * RETURN:
- * None.
- *
- */
static void port_reset(struct mv643xx_eth_private *mp)
{
unsigned int port_num = mp->port_num;
wrl(mp, PORT_SERIAL_CONTROL(port_num), reg_data);
}
-/*
- * mv643xx_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
- */
-
static int mv643xx_eth_stop(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
}
-/*
- * Changes MTU (maximum transfer unit) of the gigabit ethenret port
- *
- * Input : pointer to ethernet interface network device structure
- * new mtu size
- * Output : 0 upon success, -EINVAL upon failure
- */
static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
{
if ((new_mtu > 9500) || (new_mtu < 64))
return 0;
}
-/*
- * mv643xx_eth_tx_timeout_task
- *
- * Actual routine to reset the adapter when a timeout on Tx has occurred
- */
static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly)
{
struct mv643xx_eth_private *mp = container_of(ugly, struct mv643xx_eth_private,
netif_wake_queue(dev);
}
-/*
- * mv643xx_eth_tx_timeout
- *
- * Called upon a timeout on transmitting a packet
- *
- * Input : pointer to ethernet interface network device structure.
- * Output : N/A
- */
static void mv643xx_eth_tx_timeout(struct net_device *dev)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
}
#endif
-/*
- * Wrappers for MII support library.
- */
static int mv643xx_eth_mdio_read(struct net_device *dev, int phy_id, int location)
{
struct mv643xx_eth_private *mp = netdev_priv(dev);
},
};
-/*
- * phy_addr_set - Set the ethernet port PHY address.
- *
- * DESCRIPTION:
- * This routine sets the given ethernet port PHY address.
- *
- * INPUT:
- * struct mv643xx_eth_private *mp Ethernet Port.
- * int phy_addr PHY address.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * None.
- *
- */
static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
{
u32 reg_data;
wrl(mp, PHY_ADDR, reg_data);
}
-/*
- * phy_addr_get - Get the ethernet port PHY address.
- *
- * DESCRIPTION:
- * This routine returns the given ethernet port PHY address.
- *
- * INPUT:
- * struct mv643xx_eth_private *mp Ethernet Port.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * PHY address.
- *
- */
static int phy_addr_get(struct mv643xx_eth_private *mp)
{
unsigned int reg_data;
return ((reg_data >> (5 * mp->port_num)) & 0x1f);
}
-/*
- * phy_detect - Detect whether a phy is present
- *
- * DESCRIPTION:
- * This function tests whether there is a PHY present on
- * the specified port.
- *
- * INPUT:
- * struct mv643xx_eth_private *mp Ethernet Port.
- *
- * OUTPUT:
- * None
- *
- * RETURN:
- * 0 on success
- * -ENODEV on failure
- *
- */
static int phy_detect(struct mv643xx_eth_private *mp)
{
unsigned int phy_reg_data0;
}
}
-/*/
- * mv643xx_eth_probe
- *
- * First function called after registering the network device.
- * It's purpose is to initialize the device as an ethernet device,
- * fill the ethernet device structure with pointers * to functions,
- * and set the MAC address of the interface
- *
- * Input : struct device *
- * Output : -ENOMEM if failed , 0 if success
- */
static int mv643xx_eth_probe(struct platform_device *pdev)
{
struct mv643xx_eth_platform_data *pd;
},
};
-/*
- * mv643xx_eth_init_module
- *
- * Registers the network drivers into the Linux kernel
- *
- * Input : N/A
- *
- * Output : N/A
- */
static int __init mv643xx_eth_init_module(void)
{
int rc;
return rc;
}
-/*
- * mv643xx_eth_cleanup_module
- *
- * Registers the network drivers into the Linux kernel
- *
- * Input : N/A
- *
- * Output : N/A
- */
static void __exit mv643xx_eth_cleanup_module(void)
{
platform_driver_unregister(&mv643xx_eth_driver);
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff