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PS3: gelic: Add support for dual network interface 

Add support for dual network (net_device) interface so that ethernet
and wireless can own separate ethX interfaces.

V2
  - Fix the bug that bringing down and up the interface keeps rx
    disabled.
  - Make 'gelic_net_poll_controller()' extern , as David Woodhouse
    pointed out at the previous submission.
  - Fix weird usage of member names for the rx descriptor chain
V1
  - Export functions which are convenient for both interfaces
  - Move irq allocation/release code to driver probe/remove handlers
    because interfaces share interrupts.
  - Allocate skbs by using dev_alloc_skb() instead of netdev_alloc_skb()
    as the interfaces share the hardware rx queue.
  - Add gelic_port struct in order to abstract dual interface handling
  - Change handlers for hardware queues so that they can handle dual
    {source,destination} interfaces.
  - Use new NAPI functions
This is a prerequisite for the new PS3 wireless support.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Masakazu Mokuno 2008-02-07 19:58:42 +09:00 committed by Jeff Garzik
parent 01fed4c284
commit 589866f9f1
2 changed files with 565 additions and 310 deletions
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765
drivers/net/ps3_gelic_net.c
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File diff suppressed because it is too large Load Diff

110
drivers/net/ps3_gelic_net.h
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@ -35,12 +35,11 @@
#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_NET_RX_CSUM_DEFAULT 1 /* hw chksum */
#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_VLAN_POS (VLAN_ETH_ALEN * 2)
#define GELIC_NET_VLAN_MAX 4
#define GELIC_NET_MC_COUNT_MAX 32 /* multicast address list */
/* virtual interrupt status register bits */
@ -206,6 +205,13 @@ enum gelic_lv1_vlan_index {
/* 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;
@ -222,7 +228,6 @@ struct gelic_descr {
dma_addr_t bus_addr;
struct gelic_descr *next;
struct gelic_descr *prev;
struct vlan_ethhdr vlan;
} __attribute__((aligned(32)));
struct gelic_descr_chain {
@ -231,43 +236,116 @@ struct gelic_descr_chain {
struct gelic_descr *tail;
};
struct gelic_vlan_id {
u16 tx;
u16 rx;
};
struct gelic_card {
struct net_device *netdev;
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 ghiintmask;
u64 irq_mask;
struct ps3_system_bus_device *dev;
u32 vlan_id[GELIC_NET_VLAN_MAX];
int vlan_index;
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;
/* gurad dmac descriptor chain*/
spinlock_t chain_lock;
int rx_csum;
/* guard tx_dma_progress */
spinlock_t tx_dma_lock;
/*
* 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;
u64 ether_port_status;
/* 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];
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 */
};
extern unsigned long p_to_lp(long pa);
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 */