ps3_gelic_net.h

Go to the documentation of this file.

/*
 *  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 <[email protected]>
 *           Jens Osterkamp <[email protected]>
 *
 * 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 extension 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_SET_WOL       = 5,
    GELIC_LV1_GET_CHANNEL           = 6,
    GELIC_LV1_POST_WLAN_CMD     = 9,
    GELIC_LV1_GET_WLAN_CMD_RESULT   = 10,
    GELIC_LV1_GET_WLAN_EVENT    = 11,
};

/* for GELIC_LV1_SET_WOL */
enum gelic_lv1_wol_command {
    GELIC_LV1_WOL_MAGIC_PACKET  = 1,
    GELIC_LV1_WOL_ADD_MATCH_ADDR    = 6,
    GELIC_LV1_WOL_DELETE_MATCH_ADDR = 7,
};

/* for GELIC_LV1_WOL_MAGIC_PACKET */
enum gelic_lv1_wol_mp_arg {
    GELIC_LV1_WOL_MP_DISABLE    = 0,
    GELIC_LV1_WOL_MP_ENABLE     = 1,
};

/* for GELIC_LV1_WOL_{ADD,DELETE}_MATCH_ADDR */
enum gelic_lv1_wol_match_arg {
    GELIC_LV1_WOL_MATCH_INDIVIDUAL  = 0,
    GELIC_LV1_WOL_MATCH_ALL     = 1,
};

/* 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_0    = 0x0000000000000002L,
    GELIC_LV1_VLAN_TX_WIRELESS  = 0x0000000000000003L,

    /* for incoming packets */
    GELIC_LV1_VLAN_RX_ETHERNET_0    = 0x0000000000000012L,
    GELIC_LV1_VLAN_RX_WIRELESS  = 0x0000000000000013L,
};

enum gelic_lv1_phy {
    GELIC_LV1_PHY_ETHERNET_0    = 0x0000000000000002L,
};

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

enum gelic_port_type {
    GELIC_PORT_ETHERNET_0   = 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;
    /*
     * 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 mutex updown_lock;
    atomic_t users;

    u64 ether_port_status;
    int link_mode;

    /* 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;
}

#ifdef CONFIG_PPC_EARLY_DEBUG_PS3GELIC
extern void udbg_shutdown_ps3gelic(void);
#else
static inline void udbg_shutdown_ps3gelic(void) {}
#endif

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 void gelic_net_poll_controller(struct net_device *netdev);

#endif /* _GELIC_NET_H */