qeth.h

linux-2.6.15.6

#ifndef __QETH_H__
#define __QETH_H__

#include <linux/if.h>
#include <linux/if_arp.h>

#include <linux/if_tr.h>
#include <linux/trdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_vlan.h>
#include <linux/ctype.h>

#include <net/ipv6.h>
#include <linux/in6.h>
#include <net/if_inet6.h>
#include <net/addrconf.h>


#include <linux/bitops.h>

#include <asm/debug.h>
#include <asm/qdio.h>
#include <asm/ccwdev.h>
#include <asm/ccwgroup.h>

#include "qeth_mpc.h"

#define VERSION_QETH_H 		"$Revision: 1.152 $"

#ifdef CONFIG_QETH_IPV6
#define QETH_VERSION_IPV6 	":IPv6"
#else
#define QETH_VERSION_IPV6 	""
#endif
#ifdef CONFIG_QETH_VLAN
#define QETH_VERSION_VLAN 	":VLAN"
#else
#define QETH_VERSION_VLAN 	""
#endif

/**
 * Debug Facility stuff
 */
#define QETH_DBF_SETUP_NAME "qeth_setup"
#define QETH_DBF_SETUP_LEN 8
#define QETH_DBF_SETUP_PAGES 8
#define QETH_DBF_SETUP_NR_AREAS 1
#define QETH_DBF_SETUP_LEVEL 5

#define QETH_DBF_MISC_NAME "qeth_misc"
#define QETH_DBF_MISC_LEN 128
#define QETH_DBF_MISC_PAGES 2
#define QETH_DBF_MISC_NR_AREAS 1
#define QETH_DBF_MISC_LEVEL 2

#define QETH_DBF_DATA_NAME "qeth_data"
#define QETH_DBF_DATA_LEN 96
#define QETH_DBF_DATA_PAGES 8
#define QETH_DBF_DATA_NR_AREAS 1
#define QETH_DBF_DATA_LEVEL 2

#define QETH_DBF_CONTROL_NAME "qeth_control"
#define QETH_DBF_CONTROL_LEN 256
#define QETH_DBF_CONTROL_PAGES 8
#define QETH_DBF_CONTROL_NR_AREAS 2
#define QETH_DBF_CONTROL_LEVEL 5

#define QETH_DBF_TRACE_NAME "qeth_trace"
#define QETH_DBF_TRACE_LEN 8
#define QETH_DBF_TRACE_PAGES 4
#define QETH_DBF_TRACE_NR_AREAS 2
#define QETH_DBF_TRACE_LEVEL 3
extern debug_info_t *qeth_dbf_trace;

#define QETH_DBF_SENSE_NAME "qeth_sense"
#define QETH_DBF_SENSE_LEN 64
#define QETH_DBF_SENSE_PAGES 2
#define QETH_DBF_SENSE_NR_AREAS 1
#define QETH_DBF_SENSE_LEVEL 2

#define QETH_DBF_QERR_NAME "qeth_qerr"
#define QETH_DBF_QERR_LEN 8
#define QETH_DBF_QERR_PAGES 2
#define QETH_DBF_QERR_NR_AREAS 2
#define QETH_DBF_QERR_LEVEL 2

#define QETH_DBF_TEXT(name,level,text) \
	do { \
		debug_text_event(qeth_dbf_##name,level,text); \
	} while (0)

#define QETH_DBF_HEX(name,level,addr,len) \
	do { \
		debug_event(qeth_dbf_##name,level,(void*)(addr),len); \
	} while (0)

DECLARE_PER_CPU(char[256], qeth_dbf_txt_buf);

#define QETH_DBF_TEXT_(name,level,text...)				\
	do {								\
		char* dbf_txt_buf = get_cpu_var(qeth_dbf_txt_buf);	\
		sprintf(dbf_txt_buf, text);			  	\
		debug_text_event(qeth_dbf_##name,level,dbf_txt_buf);	\
		put_cpu_var(qeth_dbf_txt_buf);				\
	} while (0)

#define QETH_DBF_SPRINTF(name,level,text...) \
	do { \
		debug_sprintf_event(qeth_dbf_trace, level, ##text ); \
		debug_sprintf_event(qeth_dbf_trace, level, text ); \
	} while (0)

/**
 * some more debug stuff
 */
#define PRINTK_HEADER 	"qeth: "

#define HEXDUMP16(importance,header,ptr) \
PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
		   "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
		   *(((char*)ptr)),*(((char*)ptr)+1),*(((char*)ptr)+2), \
		   *(((char*)ptr)+3),*(((char*)ptr)+4),*(((char*)ptr)+5), \
		   *(((char*)ptr)+6),*(((char*)ptr)+7),*(((char*)ptr)+8), \
		   *(((char*)ptr)+9),*(((char*)ptr)+10),*(((char*)ptr)+11), \
		   *(((char*)ptr)+12),*(((char*)ptr)+13), \
		   *(((char*)ptr)+14),*(((char*)ptr)+15)); \
PRINT_##importance(header "%02x %02x %02x %02x  %02x %02x %02x %02x  " \
		   "%02x %02x %02x %02x  %02x %02x %02x %02x\n", \
		   *(((char*)ptr)+16),*(((char*)ptr)+17), \
		   *(((char*)ptr)+18),*(((char*)ptr)+19), \
		   *(((char*)ptr)+20),*(((char*)ptr)+21), \
		   *(((char*)ptr)+22),*(((char*)ptr)+23), \
		   *(((char*)ptr)+24),*(((char*)ptr)+25), \
		   *(((char*)ptr)+26),*(((char*)ptr)+27), \
		   *(((char*)ptr)+28),*(((char*)ptr)+29), \
		   *(((char*)ptr)+30),*(((char*)ptr)+31));

static inline void
qeth_hex_dump(unsigned char *buf, size_t len)
{
	size_t i;

	for (i = 0; i < len; i++) {
		if (i && !(i % 16))
			printk("\n");
		printk("%02x ", *(buf + i));
	}
	printk("\n");
}

#define SENSE_COMMAND_REJECT_BYTE 0
#define SENSE_COMMAND_REJECT_FLAG 0x80
#define SENSE_RESETTING_EVENT_BYTE 1
#define SENSE_RESETTING_EVENT_FLAG 0x80

#define atomic_swap(a,b) xchg((int *)a.counter, b)

/*
 * Common IO related definitions
 */
extern struct device *qeth_root_dev;
extern struct ccw_driver qeth_ccw_driver;
extern struct ccwgroup_driver qeth_ccwgroup_driver;

#define CARD_RDEV(card) card->read.ccwdev
#define CARD_WDEV(card) card->write.ccwdev
#define CARD_DDEV(card) card->data.ccwdev
#define CARD_BUS_ID(card) card->gdev->dev.bus_id
#define CARD_RDEV_ID(card) card->read.ccwdev->dev.bus_id
#define CARD_WDEV_ID(card) card->write.ccwdev->dev.bus_id
#define CARD_DDEV_ID(card) card->data.ccwdev->dev.bus_id
#define CHANNEL_ID(channel) channel->ccwdev->dev.bus_id

#define CARD_FROM_CDEV(cdev) (struct qeth_card *) \
		((struct ccwgroup_device *)cdev->dev.driver_data)\
		->dev.driver_data;

/**
 * card stuff
 */
#ifdef CONFIG_QETH_PERF_STATS
struct qeth_perf_stats {
	unsigned int bufs_rec;
	unsigned int bufs_sent;

	unsigned int skbs_sent_pack;
	unsigned int bufs_sent_pack;

	unsigned int sc_dp_p;
	unsigned int sc_p_dp;
	/* qdio_input_handler: number of times called, time spent in */
	__u64 inbound_start_time;
	unsigned int inbound_cnt;
	unsigned int inbound_time;
	/* qeth_send_packet: number of times called, time spent in */
	__u64 outbound_start_time;
	unsigned int outbound_cnt;
	unsigned int outbound_time;
	/* qdio_output_handler: number of times called, time spent in */
	__u64 outbound_handler_start_time;
	unsigned int outbound_handler_cnt;
	unsigned int outbound_handler_time;
	/* number of calls to and time spent in do_QDIO for inbound queue */
	__u64 inbound_do_qdio_start_time;
	unsigned int inbound_do_qdio_cnt;
	unsigned int inbound_do_qdio_time;
	/* number of calls to and time spent in do_QDIO for outbound queues */
	__u64 outbound_do_qdio_start_time;
	unsigned int outbound_do_qdio_cnt;
	unsigned int outbound_do_qdio_time;
	/* eddp data */
	unsigned int large_send_bytes;
	unsigned int large_send_cnt;
	unsigned int sg_skbs_sent;
	unsigned int sg_frags_sent;
};
#endif /* CONFIG_QETH_PERF_STATS */

/* Routing stuff */
struct qeth_routing_info {
	enum qeth_routing_types type;
};

/* IPA stuff */
struct qeth_ipa_info {
	__u32 supported_funcs;
	__u32 enabled_funcs;
};

static inline int
qeth_is_ipa_supported(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
{
	return (ipa->supported_funcs & func);
}

static inline int
qeth_is_ipa_enabled(struct qeth_ipa_info *ipa, enum qeth_ipa_funcs func)
{
	return (ipa->supported_funcs & ipa->enabled_funcs & func);
}

#define qeth_adp_supported(c,f) \
	qeth_is_ipa_supported(&c->options.adp, f)
#define qeth_adp_enabled(c,f) \
	qeth_is_ipa_enabled(&c->options.adp, f)
#define qeth_is_supported(c,f) \
	qeth_is_ipa_supported(&c->options.ipa4, f)
#define qeth_is_enabled(c,f) \
	qeth_is_ipa_enabled(&c->options.ipa4, f)
#ifdef CONFIG_QETH_IPV6
#define qeth_is_supported6(c,f) \
	qeth_is_ipa_supported(&c->options.ipa6, f)
#define qeth_is_enabled6(c,f) \
	qeth_is_ipa_enabled(&c->options.ipa6, f)
#else /* CONFIG_QETH_IPV6 */
#define qeth_is_supported6(c,f) 0
#define qeth_is_enabled6(c,f) 0
#endif /* CONFIG_QETH_IPV6 */
#define qeth_is_ipafunc_supported(c,prot,f) \
	 (prot==QETH_PROT_IPV6)? qeth_is_supported6(c,f):qeth_is_supported(c,f)
#define qeth_is_ipafunc_enabled(c,prot,f) \
	 (prot==QETH_PROT_IPV6)? qeth_is_enabled6(c,f):qeth_is_enabled(c,f)


#define QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT 0x0101
#define QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT 0x0101
#define QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT 0x4108
#define QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT 0x5108

#define QETH_MODELLIST_ARRAY \
	{{0x1731,0x01,0x1732,0x01,QETH_CARD_TYPE_OSAE,1, \
	QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
	QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
	QETH_MAX_QUEUES,0}, \
	{0x1731,0x05,0x1732,0x05,QETH_CARD_TYPE_IQD,0, \
	QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT, \
	QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT, \
	QETH_MAX_QUEUES,0x103}, \
	{0x1731,0x06,0x1732,0x06,QETH_CARD_TYPE_OSN,0, \
	QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT, \
	QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT, \
	QETH_MAX_QUEUES,0}, \
	{0,0,0,0,0,0,0,0,0}}

#define QETH_REAL_CARD		1
#define QETH_VLAN_CARD		2
#define QETH_BUFSIZE	 	4096

/**
 * some more defs
 */
#define IF_NAME_LEN	 	16
#define QETH_TX_TIMEOUT		100 * HZ
#define QETH_HEADER_SIZE	32
#define MAX_PORTNO 		15
#define QETH_FAKE_LL_LEN_ETH	ETH_HLEN
#define QETH_FAKE_LL_LEN_TR	(sizeof(struct trh_hdr)-TR_MAXRIFLEN+sizeof(struct trllc))
#define QETH_FAKE_LL_V6_ADDR_POS 24

/*IPv6 address autoconfiguration stuff*/
#define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
#define UNIQUE_ID_NOT_BY_CARD 		0x10000

/*****************************************************************************/
/* QDIO queue and buffer handling                                            */
/*****************************************************************************/
#define QETH_MAX_QUEUES 4
#define QETH_IN_BUF_SIZE_DEFAULT 65536
#define QETH_IN_BUF_COUNT_DEFAULT 16
#define QETH_IN_BUF_COUNT_MIN 8
#define QETH_IN_BUF_COUNT_MAX 128
#define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
#define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
		((card)->qdio.in_buf_pool.buf_count / 2)

/* buffers we have to be behind before we get a PCI */
#define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
/*enqueued free buffers left before we get a PCI*/
#define QETH_PCI_THRESHOLD_B(card) 0
/*not used unless the microcode gets patched*/
#define QETH_PCI_TIMER_VALUE(card) 3

#define QETH_MIN_INPUT_THRESHOLD 1
#define QETH_MAX_INPUT_THRESHOLD 500
#define QETH_MIN_OUTPUT_THRESHOLD 1
#define QETH_MAX_OUTPUT_THRESHOLD 300

/* priority queing */
#define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
#define QETH_DEFAULT_QUEUE    2
#define QETH_NO_PRIO_QUEUEING 0
#define QETH_PRIO_Q_ING_PREC  1
#define QETH_PRIO_Q_ING_TOS   2
#define IP_TOS_LOWDELAY 0x10
#define IP_TOS_HIGHTHROUGHPUT 0x08
#define IP_TOS_HIGHRELIABILITY 0x04
#define IP_TOS_NOTIMPORTANT 0x02

/* Packing */
#define QETH_LOW_WATERMARK_PACK  2
#define QETH_HIGH_WATERMARK_PACK 5
#define QETH_WATERMARK_PACK_FUZZ 1

#define QETH_IP_HEADER_SIZE 40

struct qeth_hdr_layer3 {
	__u8  id;
	__u8  flags;
	__u16 inbound_checksum; /*TSO:__u16 seqno */
	__u32 token;		/*TSO: __u32 reserved */
	__u16 length;
	__u8  vlan_prio;
	__u8  ext_flags;
	__u16 vlan_id;
	__u16 frame_offset;
	__u8  dest_addr[16];
} __attribute__ ((packed));

struct qeth_hdr_layer2 {
	__u8 id;
	__u8 flags[3];
	__u8 port_no;
	__u8 hdr_length;
	__u16 pkt_length;
	__u16 seq_no;
	__u16 vlan_id;
	__u32 reserved;
	__u8 reserved2[16];
} __attribute__ ((packed));

struct qeth_hdr_osn {
	__u8 id;
	__u8 reserved;
	__u16 seq_no;
	__u16 reserved2;
	__u16 control_flags;
	__u16 pdu_length;
	__u8 reserved3[18];
	__u32 ccid;
} __attribute__ ((packed));
					    
struct qeth_hdr {
	union {
		struct qeth_hdr_layer2 l2;
		struct qeth_hdr_layer3 l3;
		struct qeth_hdr_osn    osn;
	} hdr;
} __attribute__ ((packed));

/*TCP Segmentation Offload header*/
struct qeth_hdr_ext_tso {
        __u16 hdr_tot_len;
        __u8  imb_hdr_no;
        __u8  reserved;
        __u8  hdr_type;
        __u8  hdr_version;
        __u16 hdr_len;
        __u32 payload_len;
        __u16 mss;
        __u16 dg_hdr_len;
        __u8  padding[16];
} __attribute__ ((packed));

struct qeth_hdr_tso {
        struct qeth_hdr hdr; 	/*hdr->hdr.l3.xxx*/
	struct qeth_hdr_ext_tso ext;
} __attribute__ ((packed));


/* flags for qeth_hdr.flags */
#define QETH_HDR_PASSTHRU 0x10
#define QETH_HDR_IPV6     0x80
#define QETH_HDR_CAST_MASK 0x07
enum qeth_cast_flags {
	QETH_CAST_UNICAST   = 0x06,
	QETH_CAST_MULTICAST = 0x04,
	QETH_CAST_BROADCAST = 0x05,
	QETH_CAST_ANYCAST   = 0x07,
	QETH_CAST_NOCAST    = 0x00,
};

enum qeth_layer2_frame_flags {
	QETH_LAYER2_FLAG_MULTICAST = 0x01,
	QETH_LAYER2_FLAG_BROADCAST = 0x02,
	QETH_LAYER2_FLAG_UNICAST   = 0x04,
	QETH_LAYER2_FLAG_VLAN      = 0x10,
};

enum qeth_header_ids {
	QETH_HEADER_TYPE_LAYER3 = 0x01,
	QETH_HEADER_TYPE_LAYER2 = 0x02,
	QETH_HEADER_TYPE_TSO	= 0x03,
	QETH_HEADER_TYPE_OSN    = 0x04,
};
/* flags for qeth_hdr.ext_flags */
#define QETH_HDR_EXT_VLAN_FRAME       0x01
#define QETH_HDR_EXT_TOKEN_ID         0x02
#define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
#define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
#define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
#define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
#define QETH_HDR_EXT_UDP_TSO          0x40 /*bit off for TCP*/

static inline int
qeth_is_last_sbale(struct qdio_buffer_element *sbale)
{
	return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
}

enum qeth_qdio_buffer_states {
	/*
	 * inbound: read out by driver; owned by hardware in order to be filled
	 * outbound: owned by driver in order to be filled
	 */
	QETH_QDIO_BUF_EMPTY,
	/*
	 * inbound: filled by hardware; owned by driver in order to be read out
	 * outbound: filled by driver; owned by hardware in order to be sent
	 */
	QETH_QDIO_BUF_PRIMED,
};

enum qeth_qdio_info_states {
	QETH_QDIO_UNINITIALIZED,
	QETH_QDIO_ALLOCATED,
	QETH_QDIO_ESTABLISHED,
};

struct qeth_buffer_pool_entry {
	struct list_head list;
	struct list_head init_list;
	void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
};

struct qeth_qdio_buffer_pool {
	struct list_head entry_list;
	int buf_count;
};

struct qeth_qdio_buffer {
	struct qdio_buffer *buffer;
	volatile enum qeth_qdio_buffer_states state;
	/* the buffer pool entry currently associated to this buffer */
	struct qeth_buffer_pool_entry *pool_entry;
};

struct qeth_qdio_q {
	struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
	struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
	/*
	 * buf_to_init means "buffer must be initialized by driver and must
	 * be made available for hardware" -> state is set to EMPTY
	 */
	volatile int next_buf_to_init;
} __attribute__ ((aligned(256)));

/* possible types of qeth large_send support */
enum qeth_large_send_types {
	QETH_LARGE_SEND_NO,
	QETH_LARGE_SEND_EDDP,
	QETH_LARGE_SEND_TSO,
};

struct qeth_qdio_out_buffer {
	struct qdio_buffer *buffer;
	atomic_t state;
	volatile int next_element_to_fill;
	struct sk_buff_head skb_list;
	struct list_head ctx_list;
};

struct qeth_card;

enum qeth_out_q_states {
       QETH_OUT_Q_UNLOCKED,
       QETH_OUT_Q_LOCKED,
       QETH_OUT_Q_LOCKED_FLUSH,
};

struct qeth_qdio_out_q {
	struct qdio_buffer qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
	struct qeth_qdio_out_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
	int queue_no;
	struct qeth_card *card;
	atomic_t state;
	volatile int do_pack;
	/*
	 * index of buffer to be filled by driver; state EMPTY or PACKING
	 */
	volatile int next_buf_to_fill;
	/*
	 * number of buffers that are currently filled (PRIMED)
	 * -> these buffers are hardware-owned
	 */
	atomic_t used_buffers;
	/* indicates whether PCI flag must be set (or if one is outstanding) */
	atomic_t set_pci_flags_count;
} __attribute__ ((aligned(256)));

struct qeth_qdio_info {
	volatile enum qeth_qdio_info_states state;
	/* input */
	struct qeth_qdio_q *in_q;
	struct qeth_qdio_buffer_pool in_buf_pool;
	struct qeth_qdio_buffer_pool init_pool;
	int in_buf_size;

	/* output */
	int no_out_queues;
	struct qeth_qdio_out_q **out_qs;

	/* priority queueing */
	int do_prio_queueing;
	int default_out_queue;
};

enum qeth_send_errors {
	QETH_SEND_ERROR_NONE,
	QETH_SEND_ERROR_LINK_FAILURE,
	QETH_SEND_ERROR_RETRY,
	QETH_SEND_ERROR_KICK_IT,
};

#define QETH_ETH_MAC_V4      0x0100 /* like v4 */
#define QETH_ETH_MAC_V6      0x3333 /* like v6 */
/* tr mc mac is longer, but that will be enough to detect mc frames */
#define QETH_TR_MAC_NC       0xc000 /* non-canonical */
#define QETH_TR_MAC_C        0x0300 /* canonical */

#define DEFAULT_ADD_HHLEN 0
#define MAX_ADD_HHLEN 1024

/**
 * buffer stuff for read channel
 */
#define QETH_CMD_BUFFER_NO	8

/**
 *  channel state machine
 */
enum qeth_channel_states {
	CH_STATE_UP,
	CH_STATE_DOWN,
	CH_STATE_ACTIVATING,
	CH_STATE_HALTED,
	CH_STATE_STOPPED,
};
/**
 * card state machine
 */
enum qeth_card_states {
	CARD_STATE_DOWN,
	CARD_STATE_HARDSETUP,
	CARD_STATE_SOFTSETUP,
	CARD_STATE_UP,
	CARD_STATE_RECOVER,
};

/**
 * Protocol versions
 */
enum qeth_prot_versions {
	QETH_PROT_IPV4 = 0x0004,
	QETH_PROT_IPV6 = 0x0006,
};

enum qeth_ip_types {
	QETH_IP_TYPE_NORMAL,
	QETH_IP_TYPE_VIPA,
	QETH_IP_TYPE_RXIP,
	QETH_IP_TYPE_DEL_ALL_MC,
};

enum qeth_cmd_buffer_state {
	BUF_STATE_FREE,
	BUF_STATE_LOCKED,
	BUF_STATE_PROCESSED,
};
/**
 * IP address and multicast list
 */
struct qeth_ipaddr {
	struct list_head entry;
	enum qeth_ip_types type;
	enum qeth_ipa_setdelip_flags set_flags;
	enum qeth_ipa_setdelip_flags del_flags;
	int is_multicast;
	volatile int users;
	enum qeth_prot_versions proto;
	unsigned char mac[OSA_ADDR_LEN];
	union {
		struct {
			unsigned int addr;