acenic.h

来自「Linux Kernel 2.6.9 for OMAP1710」· C头文件 代码 · 共 806 行 · 第 1/2 页

#define C_SET_MULTICAST_MODE	0x0e
#define C_C_MCAST_ENABLE	0x01
#define C_C_MCAST_DISABLE	0x02

#define C_CLEAR_STATS		0x0f
#define C_SET_RX_JUMBO_PRD_IDX	0x10
#define C_REFRESH_STATS		0x11


/*
 * Descriptor flags
 */
#define BD_FLG_TCP_UDP_SUM	0x01
#define BD_FLG_IP_SUM		0x02
#define BD_FLG_END		0x04
#define BD_FLG_MORE		0x08
#define BD_FLG_JUMBO		0x10
#define BD_FLG_UCAST		0x20
#define BD_FLG_MCAST		0x40
#define BD_FLG_BCAST		0x60
#define BD_FLG_TYP_MASK		0x60
#define BD_FLG_IP_FRAG		0x80
#define BD_FLG_IP_FRAG_END	0x100
#define BD_FLG_VLAN_TAG		0x200
#define BD_FLG_FRAME_ERROR	0x400
#define BD_FLG_COAL_NOW		0x800
#define BD_FLG_MINI		0x1000


/*
 * Ring Control block flags
 */
#define RCB_FLG_TCP_UDP_SUM	0x01
#define RCB_FLG_IP_SUM		0x02
#define RCB_FLG_NO_PSEUDO_HDR	0x08
#define RCB_FLG_VLAN_ASSIST	0x10
#define RCB_FLG_COAL_INT_ONLY	0x20
#define RCB_FLG_TX_HOST_RING	0x40
#define RCB_FLG_IEEE_SNAP_SUM	0x80
#define RCB_FLG_EXT_RX_BD	0x100
#define RCB_FLG_RNG_DISABLE	0x200


/*
 * TX ring - maximum TX ring entries for Tigon I's is 128
 */
#define MAX_TX_RING_ENTRIES	256
#define TIGON_I_TX_RING_ENTRIES	128
#define TX_RING_SIZE		(MAX_TX_RING_ENTRIES * sizeof(struct tx_desc))
#define TX_RING_BASE		0x3800

struct tx_desc{
        aceaddr	addr;
	u32	flagsize; 
#if 0
/*
 * This is in PCI shared mem and must be accessed with readl/writel
 * real layout is:
 */
#if __LITTLE_ENDIAN
	u16	flags;
	u16	size;
	u16	vlan;
	u16	reserved;
#else
	u16	size;
	u16	flags;
	u16	reserved;
	u16	vlan;
#endif
#endif
	u32	vlanres;
};


#define RX_STD_RING_ENTRIES	512
#define RX_STD_RING_SIZE	(RX_STD_RING_ENTRIES * sizeof(struct rx_desc))

#define RX_JUMBO_RING_ENTRIES	256
#define RX_JUMBO_RING_SIZE	(RX_JUMBO_RING_ENTRIES *sizeof(struct rx_desc))

#define RX_MINI_RING_ENTRIES	1024
#define RX_MINI_RING_SIZE	(RX_MINI_RING_ENTRIES *sizeof(struct rx_desc))

#define RX_RETURN_RING_ENTRIES	2048
#define RX_RETURN_RING_SIZE	(RX_MAX_RETURN_RING_ENTRIES * \
				 sizeof(struct rx_desc))

struct rx_desc{
	aceaddr	addr;
#ifdef __LITTLE_ENDIAN
	u16	size;
	u16	idx;
#else
	u16	idx;
	u16	size;
#endif
#ifdef __LITTLE_ENDIAN
	u16	flags;
	u16	type;
#else
	u16	type;
	u16	flags;
#endif
#ifdef __LITTLE_ENDIAN
	u16	tcp_udp_csum;
	u16	ip_csum;
#else
	u16	ip_csum;
	u16	tcp_udp_csum;
#endif
#ifdef __LITTLE_ENDIAN
	u16	vlan;
	u16	err_flags;
#else
	u16	err_flags;
	u16	vlan;
#endif
	u32	reserved;
	u32	opague;
};


/*
 * This struct is shared with the NIC firmware.
 */
struct ring_ctrl {
	aceaddr	rngptr;
#ifdef __LITTLE_ENDIAN
	u16	flags;
	u16	max_len;
#else
	u16	max_len;
	u16	flags;
#endif
	u32	pad;
};


struct ace_mac_stats {
	u32 excess_colls;
	u32 coll_1;
	u32 coll_2;
	u32 coll_3;
	u32 coll_4;
	u32 coll_5;
	u32 coll_6;
	u32 coll_7;
	u32 coll_8;
	u32 coll_9;
	u32 coll_10;
	u32 coll_11;
	u32 coll_12;
	u32 coll_13;
	u32 coll_14;
	u32 coll_15;
	u32 late_coll;
	u32 defers;
	u32 crc_err;
	u32 underrun;
	u32 crs_err;
	u32 pad[3];
	u32 drop_ula;
	u32 drop_mc;
	u32 drop_fc;
	u32 drop_space;
	u32 coll;
	u32 kept_bc;
	u32 kept_mc;
	u32 kept_uc;
};


struct ace_info {
	union {
		u32 stats[256];
	} s;
	struct ring_ctrl	evt_ctrl;
	struct ring_ctrl	cmd_ctrl;
	struct ring_ctrl	tx_ctrl;
	struct ring_ctrl	rx_std_ctrl;
	struct ring_ctrl	rx_jumbo_ctrl;
	struct ring_ctrl	rx_mini_ctrl;
	struct ring_ctrl	rx_return_ctrl;
	aceaddr	evt_prd_ptr;
	aceaddr	rx_ret_prd_ptr;
	aceaddr	tx_csm_ptr;
	aceaddr	stats2_ptr;
};


struct ring_info {
	struct sk_buff		*skb;
	DECLARE_PCI_UNMAP_ADDR(mapping)
};


/*
 * Funny... As soon as we add maplen on alpha, it starts to work
 * much slower. Hmm... is it because struct does not fit to one cacheline?
 * So, split tx_ring_info.
 */
struct tx_ring_info {
	struct sk_buff		*skb;
	DECLARE_PCI_UNMAP_ADDR(mapping)
	DECLARE_PCI_UNMAP_LEN(maplen)
};


/*
 * struct ace_skb holding the rings of skb's. This is an awful lot of
 * pointers, but I don't see any other smart mode to do this in an
 * efficient manner ;-(
 */
struct ace_skb
{
	struct tx_ring_info	tx_skbuff[MAX_TX_RING_ENTRIES];
	struct ring_info	rx_std_skbuff[RX_STD_RING_ENTRIES];
	struct ring_info	rx_mini_skbuff[RX_MINI_RING_ENTRIES];
	struct ring_info	rx_jumbo_skbuff[RX_JUMBO_RING_ENTRIES];
};


/*
 * Struct private for the AceNIC.
 *
 * Elements are grouped so variables used by the tx handling goes
 * together, and will go into the same cache lines etc. in order to
 * avoid cache line contention between the rx and tx handling on SMP.
 *
 * Frequently accessed variables are put at the beginning of the
 * struct to help the compiler generate better/shorter code.
 */
struct ace_private
{
	struct ace_info		*info;
	struct ace_regs		*regs;		/* register base */
	struct ace_skb		*skb;
	dma_addr_t		info_dma;	/* 32/64 bit */

	int			version, link;
	int			promisc, mcast_all;

	/*
	 * TX elements
	 */
	struct tx_desc		*tx_ring;
	u32			tx_prd;
	volatile u32		tx_ret_csm;
	int			tx_ring_entries;

	/*
	 * RX elements
	 */
	unsigned long		std_refill_busy
				__attribute__ ((aligned (SMP_CACHE_BYTES)));
	unsigned long		mini_refill_busy, jumbo_refill_busy;
	atomic_t		cur_rx_bufs;
	atomic_t		cur_mini_bufs;
	atomic_t		cur_jumbo_bufs;
	u32			rx_std_skbprd, rx_mini_skbprd, rx_jumbo_skbprd;
	u32			cur_rx;

	struct rx_desc		*rx_std_ring;
	struct rx_desc		*rx_jumbo_ring;
	struct rx_desc		*rx_mini_ring;
	struct rx_desc		*rx_return_ring;

#if ACENIC_DO_VLAN
	struct vlan_group	*vlgrp;
#endif

	int			tasklet_pending, jumbo;
	struct tasklet_struct	ace_tasklet;

	struct event		*evt_ring;

	volatile u32		*evt_prd, *rx_ret_prd, *tx_csm;

	dma_addr_t		tx_ring_dma;	/* 32/64 bit */
	dma_addr_t		rx_ring_base_dma;
	dma_addr_t		evt_ring_dma;
	dma_addr_t		evt_prd_dma, rx_ret_prd_dma, tx_csm_dma;

	unsigned char		*trace_buf;
	struct pci_dev		*pdev;
	struct net_device	*next;
	volatile int		fw_running;
	int			board_idx;
	u16			pci_command;
	u8			pci_latency;
	const char		*name;
#ifdef INDEX_DEBUG
	spinlock_t		debug_lock
				__attribute__ ((aligned (SMP_CACHE_BYTES)));
	u32			last_tx, last_std_rx, last_mini_rx;
#endif
	struct net_device_stats stats;
	int			pci_using_dac;
};


#define TX_RESERVED	MAX_SKB_FRAGS

static inline int tx_space (struct ace_private *ap, u32 csm, u32 prd)
{
	return (csm - prd - 1) & (ACE_TX_RING_ENTRIES(ap) - 1);
}

#define tx_free(ap) 		tx_space((ap)->tx_ret_csm, (ap)->tx_prd, ap)

#if MAX_SKB_FRAGS
#define tx_ring_full(ap, csm, prd)	(tx_space(ap, csm, prd) <= TX_RESERVED)
#else
#define tx_ring_full			0
#endif


static inline void set_aceaddr(aceaddr *aa, dma_addr_t addr)
{
	u64 baddr = (u64) addr;
	aa->addrlo = baddr & 0xffffffff;
	aa->addrhi = baddr >> 32;
	wmb();
}


static inline void ace_set_txprd(struct ace_regs *regs,
				 struct ace_private *ap, u32 value)
{
#ifdef INDEX_DEBUG
	unsigned long flags;
	spin_lock_irqsave(&ap->debug_lock, flags);
	writel(value, &regs->TxPrd);
	if (value == ap->last_tx)
		printk(KERN_ERR "AceNIC RACE ALERT! writing identical value "
		       "to tx producer (%i)\n", value);
	ap->last_tx = value;
	spin_unlock_irqrestore(&ap->debug_lock, flags);
#else
	writel(value, &regs->TxPrd);
#endif
	wmb();
}


static inline void ace_mask_irq(struct net_device *dev)
{
	struct ace_private *ap = dev->priv;
	struct ace_regs *regs = ap->regs;

	if (ACE_IS_TIGON_I(ap))
		writel(1, &regs->MaskInt);
	else
		writel(readl(&regs->HostCtrl) | MASK_INTS, &regs->HostCtrl);

	ace_sync_irq(dev->irq);
}


static inline void ace_unmask_irq(struct net_device *dev)
{
	struct ace_private *ap = dev->priv;
	struct ace_regs *regs = ap->regs;
 
	if (ACE_IS_TIGON_I(ap))
		writel(0, &regs->MaskInt);
	else
		writel(readl(&regs->HostCtrl) & ~MASK_INTS, &regs->HostCtrl);
}


/*
 * Prototypes
 */
static int ace_init(struct net_device *dev);
static void ace_load_std_rx_ring(struct ace_private *ap, int nr_bufs);
static void ace_load_mini_rx_ring(struct ace_private *ap, int nr_bufs);
static void ace_load_jumbo_rx_ring(struct ace_private *ap, int nr_bufs);
static irqreturn_t ace_interrupt(int irq, void *dev_id, struct pt_regs *regs);
static int ace_load_firmware(struct net_device *dev);
static int ace_open(struct net_device *dev);
static int ace_start_xmit(struct sk_buff *skb, struct net_device *dev);
static int ace_close(struct net_device *dev);
static void ace_tasklet(unsigned long dev);
static void ace_dump_trace(struct ace_private *ap);
static void ace_set_multicast_list(struct net_device *dev);
static int ace_change_mtu(struct net_device *dev, int new_mtu);
static int ace_set_mac_addr(struct net_device *dev, void *p);
static void ace_set_rxtx_parms(struct net_device *dev, int jumbo);
static int ace_allocate_descriptors(struct net_device *dev);
static void ace_free_descriptors(struct net_device *dev);
static void ace_init_cleanup(struct net_device *dev);
static struct net_device_stats *ace_get_stats(struct net_device *dev);
static int read_eeprom_byte(struct net_device *dev, unsigned long offset);
#if ACENIC_DO_VLAN
static void ace_vlan_rx_register(struct net_device *dev, struct vlan_group *grp);
static void ace_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid);
#endif

#endif /* _ACENIC_H_ */