drivers/net/ps3_gelic_net.h - kernel/msm-4.9 - Gitiles

 /*
  *  PS3 Platfom gelic network driver.
  *
  * Copyright (C) 2007 Sony Computer Entertainment Inc.
  * Copyright 2006, 2007 Sony Corporation.
  *
  * This file is based on: spider_net.h
  *
  * (C) Copyright IBM Corp. 2005
  *
  * Authors : Utz Bacher <utz.bacher@de.ibm.com>
  *           Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
  *
  * 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #ifndef _GELIC_NET_H
 #define _GELIC_NET_H

 /* descriptors */
 #define GELIC_NET_RX_DESCRIPTORS        128 /* num of descriptors */
 #define GELIC_NET_TX_DESCRIPTORS        128 /* num of descriptors */

 #define GELIC_NET_MAX_MTU               VLAN_ETH_FRAME_LEN
 #define GELIC_NET_MIN_MTU               VLAN_ETH_ZLEN
 #define GELIC_NET_RXBUF_ALIGN           128
 #define GELIC_CARD_RX_CSUM_DEFAULT      1 /* hw chksum */
 #define GELIC_NET_WATCHDOG_TIMEOUT      5*HZ
 #define GELIC_NET_NAPI_WEIGHT           (GELIC_NET_RX_DESCRIPTORS)
 #define GELIC_NET_BROADCAST_ADDR        0xffffffffffffL

 #define GELIC_NET_MC_COUNT_MAX          32 /* multicast address list */

 /* virtual interrupt status register bits */
 	/* INT1 */
 #define GELIC_CARD_TX_RAM_FULL_ERR           0x0000000000000001L
 #define GELIC_CARD_RX_RAM_FULL_ERR           0x0000000000000002L
 #define GELIC_CARD_TX_SHORT_FRAME_ERR        0x0000000000000004L
 #define GELIC_CARD_TX_INVALID_DESCR_ERR      0x0000000000000008L
 #define GELIC_CARD_RX_FIFO_FULL_ERR          0x0000000000002000L
 #define GELIC_CARD_RX_DESCR_CHAIN_END        0x0000000000004000L
 #define GELIC_CARD_RX_INVALID_DESCR_ERR      0x0000000000008000L
 #define GELIC_CARD_TX_RESPONCE_ERR           0x0000000000010000L
 #define GELIC_CARD_RX_RESPONCE_ERR           0x0000000000100000L
 #define GELIC_CARD_TX_PROTECTION_ERR         0x0000000000400000L
 #define GELIC_CARD_RX_PROTECTION_ERR         0x0000000004000000L
 #define GELIC_CARD_TX_TCP_UDP_CHECKSUM_ERR   0x0000000008000000L
 #define GELIC_CARD_PORT_STATUS_CHANGED       0x0000000020000000L
 #define GELIC_CARD_WLAN_EVENT_RECEIVED       0x0000000040000000L
 #define GELIC_CARD_WLAN_COMMAND_COMPLETED    0x0000000080000000L
 	/* INT 0 */
 #define GELIC_CARD_TX_FLAGGED_DESCR          0x0004000000000000L
 #define GELIC_CARD_RX_FLAGGED_DESCR          0x0040000000000000L
 #define GELIC_CARD_TX_TRANSFER_END           0x0080000000000000L
 #define GELIC_CARD_TX_DESCR_CHAIN_END        0x0100000000000000L
 #define GELIC_CARD_NUMBER_OF_RX_FRAME        0x1000000000000000L
 #define GELIC_CARD_ONE_TIME_COUNT_TIMER      0x4000000000000000L
 #define GELIC_CARD_FREE_RUN_COUNT_TIMER      0x8000000000000000L

 /* initial interrupt mask */
 #define GELIC_CARD_TXINT	GELIC_CARD_TX_DESCR_CHAIN_END

 #define GELIC_CARD_RXINT	(GELIC_CARD_RX_DESCR_CHAIN_END | \
 				 GELIC_CARD_NUMBER_OF_RX_FRAME)

  /* RX descriptor data_status bits */
 enum gelic_descr_rx_status {
 	GELIC_DESCR_RXDMADU	= 0x80000000, /* destination MAC addr unknown */
 	GELIC_DESCR_RXLSTFBF	= 0x40000000, /* last frame buffer            */
 	GELIC_DESCR_RXIPCHK	= 0x20000000, /* IP checksum performed        */
 	GELIC_DESCR_RXTCPCHK	= 0x10000000, /* TCP/UDP checksup performed   */
 	GELIC_DESCR_RXWTPKT	= 0x00C00000, /*
 					       * wakeup trigger packet
 					       * 01: Magic Packet (TM)
 					       * 10: ARP packet
 					       * 11: Multicast MAC addr
 					       */
 	GELIC_DESCR_RXVLNPKT	= 0x00200000, /* VLAN packet */
 	/* bit 20..16 reserved */
 	GELIC_DESCR_RXRRECNUM	= 0x0000ff00, /* reception receipt number */
 	/* bit 7..0 reserved */
 };

 #define GELIC_DESCR_DATA_STATUS_CHK_MASK	\
 	(GELIC_DESCR_RXIPCHK | GELIC_DESCR_RXTCPCHK)

  /* TX descriptor data_status bits */
 enum gelic_descr_tx_status {
 	GELIC_DESCR_TX_TAIL	= 0x00000001, /* gelic treated this
 					       * descriptor was end of
 					       * a tx frame
 					       */
 };

 /* RX descriptor data error bits */
 enum gelic_descr_rx_error {
 	/* bit 31 reserved */
 	GELIC_DESCR_RXALNERR	= 0x40000000, /* alignement error 10/100M */
 	GELIC_DESCR_RXOVERERR	= 0x20000000, /* oversize error */
 	GELIC_DESCR_RXRNTERR	= 0x10000000, /* Runt error */
 	GELIC_DESCR_RXIPCHKERR	= 0x08000000, /* IP checksum  error */
 	GELIC_DESCR_RXTCPCHKERR	= 0x04000000, /* TCP/UDP checksum  error */
 	GELIC_DESCR_RXDRPPKT	= 0x00100000, /* drop packet */
 	GELIC_DESCR_RXIPFMTERR	= 0x00080000, /* IP packet format error */
 	/* bit 18 reserved */
 	GELIC_DESCR_RXDATAERR	= 0x00020000, /* IP packet format error */
 	GELIC_DESCR_RXCALERR	= 0x00010000, /* cariier extension length
 					      * error */
 	GELIC_DESCR_RXCREXERR	= 0x00008000, /* carrier extention error */
 	GELIC_DESCR_RXMLTCST	= 0x00004000, /* multicast address frame */
 	/* bit 13..0 reserved */
 };
 #define GELIC_DESCR_DATA_ERROR_CHK_MASK		\
 	(GELIC_DESCR_RXIPCHKERR | GELIC_DESCR_RXTCPCHKERR)

 /* DMA command and status (RX and TX)*/
 enum gelic_descr_dma_status {
 	GELIC_DESCR_DMA_COMPLETE            = 0x00000000, /* used in tx */
 	GELIC_DESCR_DMA_BUFFER_FULL         = 0x00000000, /* used in rx */
 	GELIC_DESCR_DMA_RESPONSE_ERROR      = 0x10000000, /* used in rx, tx */
 	GELIC_DESCR_DMA_PROTECTION_ERROR    = 0x20000000, /* used in rx, tx */
 	GELIC_DESCR_DMA_FRAME_END           = 0x40000000, /* used in rx */
 	GELIC_DESCR_DMA_FORCE_END           = 0x50000000, /* used in rx, tx */
 	GELIC_DESCR_DMA_CARDOWNED           = 0xa0000000, /* used in rx, tx */
 	GELIC_DESCR_DMA_NOT_IN_USE          = 0xb0000000, /* any other value */
 };

 #define GELIC_DESCR_DMA_STAT_MASK	(0xf0000000)

 /* tx descriptor command and status */
 enum gelic_descr_tx_dma_status {
 	/* [19] */
 	GELIC_DESCR_TX_DMA_IKE		= 0x00080000, /* IPSEC off */
 	/* [18] */
 	GELIC_DESCR_TX_DMA_FRAME_TAIL	= 0x00040000, /* last descriptor of
 						       * the packet
 						       */
 	/* [17..16] */
 	GELIC_DESCR_TX_DMA_TCP_CHKSUM	= 0x00020000, /* TCP packet */
 	GELIC_DESCR_TX_DMA_UDP_CHKSUM	= 0x00030000, /* UDP packet */
 	GELIC_DESCR_TX_DMA_NO_CHKSUM	= 0x00000000, /* no checksum */

 	/* [1] */
 	GELIC_DESCR_TX_DMA_CHAIN_END	= 0x00000002, /* DMA terminated
 						       * due to chain end
 						       */
 };

 #define GELIC_DESCR_DMA_CMD_NO_CHKSUM	\
 	(GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
 	GELIC_DESCR_TX_DMA_NO_CHKSUM)

 #define GELIC_DESCR_DMA_CMD_TCP_CHKSUM	\
 	(GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
 	GELIC_DESCR_TX_DMA_TCP_CHKSUM)

 #define GELIC_DESCR_DMA_CMD_UDP_CHKSUM	\
 	(GELIC_DESCR_DMA_CARDOWNED | GELIC_DESCR_TX_DMA_IKE | \
 	GELIC_DESCR_TX_DMA_UDP_CHKSUM)

 enum gelic_descr_rx_dma_status {
 	/* [ 1 ] */
 	GELIC_DESCR_RX_DMA_CHAIN_END	= 0x00000002, /* DMA terminated
 						       * due to chain end
 						       */
 };

 /* for lv1_net_control */
 enum gelic_lv1_net_control_code {
 	GELIC_LV1_GET_MAC_ADDRESS	= 1,
 	GELIC_LV1_GET_ETH_PORT_STATUS	= 2,
 	GELIC_LV1_SET_NEGOTIATION_MODE	= 3,
 	GELIC_LV1_GET_VLAN_ID		= 4,
 	GELIC_LV1_GET_CHANNEL           = 6,
 	GELIC_LV1_POST_WLAN_CMD		= 9,
 	GELIC_LV1_GET_WLAN_CMD_RESULT	= 10,
 	GELIC_LV1_GET_WLAN_EVENT	= 11
 };

 /* status returened from GET_ETH_PORT_STATUS */
 enum gelic_lv1_ether_port_status {
 	GELIC_LV1_ETHER_LINK_UP		= 0x0000000000000001L,
 	GELIC_LV1_ETHER_FULL_DUPLEX	= 0x0000000000000002L,
 	GELIC_LV1_ETHER_AUTO_NEG	= 0x0000000000000004L,

 	GELIC_LV1_ETHER_SPEED_10	= 0x0000000000000010L,
 	GELIC_LV1_ETHER_SPEED_100	= 0x0000000000000020L,
 	GELIC_LV1_ETHER_SPEED_1000	= 0x0000000000000040L,
 	GELIC_LV1_ETHER_SPEED_MASK	= 0x0000000000000070L
 };

 enum gelic_lv1_vlan_index {
 	/* for outgoing packets */
 	GELIC_LV1_VLAN_TX_ETHERNET	= 0x0000000000000002L,
 	GELIC_LV1_VLAN_TX_WIRELESS	= 0x0000000000000003L,
 	/* for incoming packets */
 	GELIC_LV1_VLAN_RX_ETHERNET	= 0x0000000000000012L,
 	GELIC_LV1_VLAN_RX_WIRELESS	= 0x0000000000000013L
 };

 /* size of hardware part of gelic descriptor */
 #define GELIC_DESCR_SIZE	(32)

 enum gelic_port_type {
 	GELIC_PORT_ETHERNET = 0,
 	GELIC_PORT_WIRELESS = 1,
 	GELIC_PORT_MAX
 };

 struct gelic_descr {
 	/* as defined by the hardware */
 	__be32 buf_addr;
 	__be32 buf_size;
 	__be32 next_descr_addr;
 	__be32 dmac_cmd_status;
 	__be32 result_size;
 	__be32 valid_size;	/* all zeroes for tx */
 	__be32 data_status;
 	__be32 data_error;	/* all zeroes for tx */

 	/* used in the driver */
 	struct sk_buff *skb;
 	dma_addr_t bus_addr;
 	struct gelic_descr *next;
 	struct gelic_descr *prev;
 } __attribute__((aligned(32)));

 struct gelic_descr_chain {
 	/* we walk from tail to head */
 	struct gelic_descr *head;
 	struct gelic_descr *tail;
 };

 struct gelic_vlan_id {
 	u16 tx;
 	u16 rx;
 };

 struct gelic_card {
 	struct napi_struct napi;
 	struct net_device *netdev[GELIC_PORT_MAX];
 	/*
 	 * hypervisor requires irq_status should be
 	 * 8 bytes aligned, but u64 member is
 	 * always disposed in that manner
 	 */
 	u64 irq_status;
 	u64 irq_mask;

 	struct ps3_system_bus_device *dev;
 	struct gelic_vlan_id vlan[GELIC_PORT_MAX];
 	int vlan_required;

 	struct gelic_descr_chain tx_chain;
 	struct gelic_descr_chain rx_chain;
 	int rx_dma_restart_required;
 	int rx_csum;
 	/*
 	 * tx_lock guards tx descriptor list and
 	 * tx_dma_progress.
 	 */
 	spinlock_t tx_lock;
 	int tx_dma_progress;

 	struct work_struct tx_timeout_task;
 	atomic_t tx_timeout_task_counter;
 	wait_queue_head_t waitq;

 	/* only first user should up the card */
 	struct semaphore updown_lock;
 	atomic_t users;

 	u64 ether_port_status;
 	/* original address returned by kzalloc */
 	void *unalign;

 	/*
 	 * each netdevice has copy of irq
 	 */
 	unsigned int irq;
 	struct gelic_descr *tx_top, *rx_top;
 	struct gelic_descr descr[0]; /* must be the last */
 };

 struct gelic_port {
 	struct gelic_card *card;
 	struct net_device *netdev;
 	enum gelic_port_type type;
 	long priv[0]; /* long for alignment */
 };

 static inline struct gelic_card *port_to_card(struct gelic_port *p)
 {
 	return p->card;
 }
 static inline struct net_device *port_to_netdev(struct gelic_port *p)
 {
 	return p->netdev;
 }
 static inline struct gelic_card *netdev_card(struct net_device *d)
 {
 	return ((struct gelic_port *)netdev_priv(d))->card;
 }
 static inline struct gelic_port *netdev_port(struct net_device *d)
 {
 	return (struct gelic_port *)netdev_priv(d);
 }
 static inline struct device *ctodev(struct gelic_card *card)
 {
 	return &card->dev->core;
 }
 static inline u64 bus_id(struct gelic_card *card)
 {
 	return card->dev->bus_id;
 }
 static inline u64 dev_id(struct gelic_card *card)
 {
 	return card->dev->dev_id;
 }

 static inline void *port_priv(struct gelic_port *port)
 {
 	return port->priv;
 }

 extern int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask);
 /* shared netdev ops */
 extern void gelic_card_up(struct gelic_card *card);
 extern void gelic_card_down(struct gelic_card *card);
 extern int gelic_net_open(struct net_device *netdev);
 extern int gelic_net_stop(struct net_device *netdev);
 extern int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
 extern void gelic_net_set_multi(struct net_device *netdev);
 extern void gelic_net_tx_timeout(struct net_device *netdev);
 extern int gelic_net_change_mtu(struct net_device *netdev, int new_mtu);
 extern int gelic_net_setup_netdev(struct net_device *netdev,
 				  struct gelic_card *card);

 /* shared ethtool ops */
 extern void gelic_net_get_drvinfo(struct net_device *netdev,
 				  struct ethtool_drvinfo *info);
 extern u32 gelic_net_get_rx_csum(struct net_device *netdev);
 extern int gelic_net_set_rx_csum(struct net_device *netdev, u32 data);
 extern void gelic_net_poll_controller(struct net_device *netdev);

 #endif /* _GELIC_NET_H */
	/*
	* PS3 Platfom gelic network driver.
	*
	* Copyright (C) 2007 Sony Computer Entertainment Inc.
	* Copyright 2006, 2007 Sony Corporation.
	*
	* This file is based on: spider_net.h
	*
	* (C) Copyright IBM Corp. 2005
	*
	* Authors : Utz Bacher <utz.bacher@de.ibm.com>
	* Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
	*
	* 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
	*/
	#ifndef _GELIC_NET_H
	#define _GELIC_NET_H

	/* descriptors */
	#define GELIC_NET_RX_DESCRIPTORS 128 /* num of descriptors */
	#define GELIC_NET_TX_DESCRIPTORS 128 /* num of descriptors */

	#define GELIC_NET_MAX_MTU VLAN_ETH_FRAME_LEN
	#define GELIC_NET_MIN_MTU VLAN_ETH_ZLEN
	#define GELIC_NET_RXBUF_ALIGN 128
	#define GELIC_CARD_RX_CSUM_DEFAULT 1 /* hw chksum */
	#define GELIC_NET_WATCHDOG_TIMEOUT 5*HZ
	#define GELIC_NET_NAPI_WEIGHT (GELIC_NET_RX_DESCRIPTORS)
	#define GELIC_NET_BROADCAST_ADDR 0xffffffffffffL

	#define GELIC_NET_MC_COUNT_MAX 32 /* multicast address list */

	/* virtual interrupt status register bits */
	/* INT1 */
	#define GELIC_CARD_TX_RAM_FULL_ERR 0x0000000000000001L
	#define GELIC_CARD_RX_RAM_FULL_ERR 0x0000000000000002L
	#define GELIC_CARD_TX_SHORT_FRAME_ERR 0x0000000000000004L
	#define GELIC_CARD_TX_INVALID_DESCR_ERR 0x0000000000000008L
	#define GELIC_CARD_RX_FIFO_FULL_ERR 0x0000000000002000L
	#define GELIC_CARD_RX_DESCR_CHAIN_END 0x0000000000004000L
	#define GELIC_CARD_RX_INVALID_DESCR_ERR 0x0000000000008000L
	#define GELIC_CARD_TX_RESPONCE_ERR 0x0000000000010000L
	#define GELIC_CARD_RX_RESPONCE_ERR 0x0000000000100000L
	#define GELIC_CARD_TX_PROTECTION_ERR 0x0000000000400000L
	#define GELIC_CARD_RX_PROTECTION_ERR 0x0000000004000000L
	#define GELIC_CARD_TX_TCP_UDP_CHECKSUM_ERR 0x0000000008000000L
	#define GELIC_CARD_PORT_STATUS_CHANGED 0x0000000020000000L
	#define GELIC_CARD_WLAN_EVENT_RECEIVED 0x0000000040000000L
	#define GELIC_CARD_WLAN_COMMAND_COMPLETED 0x0000000080000000L
	/* INT 0 */
	#define GELIC_CARD_TX_FLAGGED_DESCR 0x0004000000000000L
	#define GELIC_CARD_RX_FLAGGED_DESCR 0x0040000000000000L
	#define GELIC_CARD_TX_TRANSFER_END 0x0080000000000000L
	#define GELIC_CARD_TX_DESCR_CHAIN_END 0x0100000000000000L
	#define GELIC_CARD_NUMBER_OF_RX_FRAME 0x1000000000000000L
	#define GELIC_CARD_ONE_TIME_COUNT_TIMER 0x4000000000000000L
	#define GELIC_CARD_FREE_RUN_COUNT_TIMER 0x8000000000000000L

	/* initial interrupt mask */
	#define GELIC_CARD_TXINT GELIC_CARD_TX_DESCR_CHAIN_END

	#define GELIC_CARD_RXINT (GELIC_CARD_RX_DESCR_CHAIN_END \| \
	GELIC_CARD_NUMBER_OF_RX_FRAME)

	/* RX descriptor data_status bits */
	enum gelic_descr_rx_status {
	GELIC_DESCR_RXDMADU = 0x80000000, /* destination MAC addr unknown */
	GELIC_DESCR_RXLSTFBF = 0x40000000, /* last frame buffer */
	GELIC_DESCR_RXIPCHK = 0x20000000, /* IP checksum performed */
	GELIC_DESCR_RXTCPCHK = 0x10000000, /* TCP/UDP checksup performed */
	GELIC_DESCR_RXWTPKT = 0x00C00000, /*
	* wakeup trigger packet
	* 01: Magic Packet (TM)
	* 10: ARP packet
	* 11: Multicast MAC addr
	*/
	GELIC_DESCR_RXVLNPKT = 0x00200000, /* VLAN packet */
	/* bit 20..16 reserved */
	GELIC_DESCR_RXRRECNUM = 0x0000ff00, /* reception receipt number */
	/* bit 7..0 reserved */
	};

	#define GELIC_DESCR_DATA_STATUS_CHK_MASK \
	(GELIC_DESCR_RXIPCHK \| GELIC_DESCR_RXTCPCHK)

	/* TX descriptor data_status bits */
	enum gelic_descr_tx_status {
	GELIC_DESCR_TX_TAIL = 0x00000001, /* gelic treated this
	* descriptor was end of
	* a tx frame
	*/
	};

	/* RX descriptor data error bits */
	enum gelic_descr_rx_error {
	/* bit 31 reserved */
	GELIC_DESCR_RXALNERR = 0x40000000, /* alignement error 10/100M */
	GELIC_DESCR_RXOVERERR = 0x20000000, /* oversize error */
	GELIC_DESCR_RXRNTERR = 0x10000000, /* Runt error */
	GELIC_DESCR_RXIPCHKERR = 0x08000000, /* IP checksum error */
	GELIC_DESCR_RXTCPCHKERR = 0x04000000, /* TCP/UDP checksum error */
	GELIC_DESCR_RXDRPPKT = 0x00100000, /* drop packet */
	GELIC_DESCR_RXIPFMTERR = 0x00080000, /* IP packet format error */
	/* bit 18 reserved */
	GELIC_DESCR_RXDATAERR = 0x00020000, /* IP packet format error */
	GELIC_DESCR_RXCALERR = 0x00010000, /* cariier extension length
	* error */
	GELIC_DESCR_RXCREXERR = 0x00008000, /* carrier extention error */
	GELIC_DESCR_RXMLTCST = 0x00004000, /* multicast address frame */
	/* bit 13..0 reserved */
	};
	#define GELIC_DESCR_DATA_ERROR_CHK_MASK \
	(GELIC_DESCR_RXIPCHKERR \| GELIC_DESCR_RXTCPCHKERR)

	/* DMA command and status (RX and TX)*/
	enum gelic_descr_dma_status {
	GELIC_DESCR_DMA_COMPLETE = 0x00000000, /* used in tx */
	GELIC_DESCR_DMA_BUFFER_FULL = 0x00000000, /* used in rx */
	GELIC_DESCR_DMA_RESPONSE_ERROR = 0x10000000, /* used in rx, tx */
	GELIC_DESCR_DMA_PROTECTION_ERROR = 0x20000000, /* used in rx, tx */
	GELIC_DESCR_DMA_FRAME_END = 0x40000000, /* used in rx */
	GELIC_DESCR_DMA_FORCE_END = 0x50000000, /* used in rx, tx */
	GELIC_DESCR_DMA_CARDOWNED = 0xa0000000, /* used in rx, tx */
	GELIC_DESCR_DMA_NOT_IN_USE = 0xb0000000, /* any other value */
	};

	#define GELIC_DESCR_DMA_STAT_MASK (0xf0000000)

	/* tx descriptor command and status */
	enum gelic_descr_tx_dma_status {
	/* [19] */
	GELIC_DESCR_TX_DMA_IKE = 0x00080000, /* IPSEC off */
	/* [18] */
	GELIC_DESCR_TX_DMA_FRAME_TAIL = 0x00040000, /* last descriptor of
	* the packet
	*/
	/* [17..16] */
	GELIC_DESCR_TX_DMA_TCP_CHKSUM = 0x00020000, /* TCP packet */
	GELIC_DESCR_TX_DMA_UDP_CHKSUM = 0x00030000, /* UDP packet */
	GELIC_DESCR_TX_DMA_NO_CHKSUM = 0x00000000, /* no checksum */

	/* [1] */
	GELIC_DESCR_TX_DMA_CHAIN_END = 0x00000002, /* DMA terminated
	* due to chain end
	*/
	};

	#define GELIC_DESCR_DMA_CMD_NO_CHKSUM \
	(GELIC_DESCR_DMA_CARDOWNED \| GELIC_DESCR_TX_DMA_IKE \| \
	GELIC_DESCR_TX_DMA_NO_CHKSUM)

	#define GELIC_DESCR_DMA_CMD_TCP_CHKSUM \
	(GELIC_DESCR_DMA_CARDOWNED \| GELIC_DESCR_TX_DMA_IKE \| \
	GELIC_DESCR_TX_DMA_TCP_CHKSUM)

	#define GELIC_DESCR_DMA_CMD_UDP_CHKSUM \
	(GELIC_DESCR_DMA_CARDOWNED \| GELIC_DESCR_TX_DMA_IKE \| \
	GELIC_DESCR_TX_DMA_UDP_CHKSUM)

	enum gelic_descr_rx_dma_status {
	/* [ 1 ] */
	GELIC_DESCR_RX_DMA_CHAIN_END = 0x00000002, /* DMA terminated
	* due to chain end
	*/
	};

	/* for lv1_net_control */
	enum gelic_lv1_net_control_code {
	GELIC_LV1_GET_MAC_ADDRESS = 1,
	GELIC_LV1_GET_ETH_PORT_STATUS = 2,
	GELIC_LV1_SET_NEGOTIATION_MODE = 3,
	GELIC_LV1_GET_VLAN_ID = 4,
	GELIC_LV1_GET_CHANNEL = 6,
	GELIC_LV1_POST_WLAN_CMD = 9,
	GELIC_LV1_GET_WLAN_CMD_RESULT = 10,
	GELIC_LV1_GET_WLAN_EVENT = 11
	};

	/* status returened from GET_ETH_PORT_STATUS */
	enum gelic_lv1_ether_port_status {
	GELIC_LV1_ETHER_LINK_UP = 0x0000000000000001L,
	GELIC_LV1_ETHER_FULL_DUPLEX = 0x0000000000000002L,
	GELIC_LV1_ETHER_AUTO_NEG = 0x0000000000000004L,

	GELIC_LV1_ETHER_SPEED_10 = 0x0000000000000010L,
	GELIC_LV1_ETHER_SPEED_100 = 0x0000000000000020L,
	GELIC_LV1_ETHER_SPEED_1000 = 0x0000000000000040L,
	GELIC_LV1_ETHER_SPEED_MASK = 0x0000000000000070L
	};

	enum gelic_lv1_vlan_index {
	/* for outgoing packets */
	GELIC_LV1_VLAN_TX_ETHERNET = 0x0000000000000002L,
	GELIC_LV1_VLAN_TX_WIRELESS = 0x0000000000000003L,
	/* for incoming packets */
	GELIC_LV1_VLAN_RX_ETHERNET = 0x0000000000000012L,
	GELIC_LV1_VLAN_RX_WIRELESS = 0x0000000000000013L
	};

	/* size of hardware part of gelic descriptor */
	#define GELIC_DESCR_SIZE (32)

	enum gelic_port_type {
	GELIC_PORT_ETHERNET = 0,
	GELIC_PORT_WIRELESS = 1,
	GELIC_PORT_MAX
	};

	struct gelic_descr {
	/* as defined by the hardware */
	__be32 buf_addr;
	__be32 buf_size;
	__be32 next_descr_addr;
	__be32 dmac_cmd_status;
	__be32 result_size;
	__be32 valid_size; /* all zeroes for tx */
	__be32 data_status;
	__be32 data_error; /* all zeroes for tx */

	/* used in the driver */
	struct sk_buff *skb;
	dma_addr_t bus_addr;
	struct gelic_descr *next;
	struct gelic_descr *prev;
	} __attribute__((aligned(32)));

	struct gelic_descr_chain {
	/* we walk from tail to head */
	struct gelic_descr *head;
	struct gelic_descr *tail;
	};

	struct gelic_vlan_id {
	u16 tx;
	u16 rx;
	};

	struct gelic_card {
	struct napi_struct napi;
	struct net_device *netdev[GELIC_PORT_MAX];
	/*
	* hypervisor requires irq_status should be
	* 8 bytes aligned, but u64 member is
	* always disposed in that manner
	*/
	u64 irq_status;
	u64 irq_mask;

	struct ps3_system_bus_device *dev;
	struct gelic_vlan_id vlan[GELIC_PORT_MAX];
	int vlan_required;

	struct gelic_descr_chain tx_chain;
	struct gelic_descr_chain rx_chain;
	int rx_dma_restart_required;
	int rx_csum;
	/*
	* tx_lock guards tx descriptor list and
	* tx_dma_progress.
	*/
	spinlock_t tx_lock;
	int tx_dma_progress;

	struct work_struct tx_timeout_task;
	atomic_t tx_timeout_task_counter;
	wait_queue_head_t waitq;

	/* only first user should up the card */
	struct semaphore updown_lock;
	atomic_t users;

	u64 ether_port_status;
	/* original address returned by kzalloc */
	void *unalign;

	/*
	* each netdevice has copy of irq
	*/
	unsigned int irq;
	struct gelic_descr tx_top, rx_top;
	struct gelic_descr descr[0]; /* must be the last */
	};

	struct gelic_port {
	struct gelic_card *card;
	struct net_device *netdev;
	enum gelic_port_type type;
	long priv[0]; /* long for alignment */
	};

	static inline struct gelic_card port_to_card(struct gelic_port p)
	{
	return p->card;
	}
	static inline struct net_device port_to_netdev(struct gelic_port p)
	{
	return p->netdev;
	}
	static inline struct gelic_card netdev_card(struct net_device d)
	{
	return ((struct gelic_port *)netdev_priv(d))->card;
	}
	static inline struct gelic_port netdev_port(struct net_device d)
	{
	return (struct gelic_port *)netdev_priv(d);
	}
	static inline struct device ctodev(struct gelic_card card)
	{
	return &card->dev->core;
	}
	static inline u64 bus_id(struct gelic_card *card)
	{
	return card->dev->bus_id;
	}
	static inline u64 dev_id(struct gelic_card *card)
	{
	return card->dev->dev_id;
	}

	static inline void port_priv(struct gelic_port port)
	{
	return port->priv;
	}

	extern int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask);
	/* shared netdev ops */
	extern void gelic_card_up(struct gelic_card *card);
	extern void gelic_card_down(struct gelic_card *card);
	extern int gelic_net_open(struct net_device *netdev);
	extern int gelic_net_stop(struct net_device *netdev);
	extern int gelic_net_xmit(struct sk_buff skb, struct net_device netdev);
	extern void gelic_net_set_multi(struct net_device *netdev);
	extern void gelic_net_tx_timeout(struct net_device *netdev);
	extern int gelic_net_change_mtu(struct net_device *netdev, int new_mtu);
	extern int gelic_net_setup_netdev(struct net_device *netdev,
	struct gelic_card *card);

	/* shared ethtool ops */
	extern void gelic_net_get_drvinfo(struct net_device *netdev,
	struct ethtool_drvinfo *info);
	extern u32 gelic_net_get_rx_csum(struct net_device *netdev);
	extern int gelic_net_set_rx_csum(struct net_device *netdev, u32 data);
	extern void gelic_net_poll_controller(struct net_device *netdev);

	#endif /* _GELIC_NET_H */