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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /drivers/s390/net/lcs.h
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'drivers/s390/net/lcs.h')
-rw-r--r--drivers/s390/net/lcs.h345
1 files changed, 345 insertions, 0 deletions
diff --git a/drivers/s390/net/lcs.h b/drivers/s390/net/lcs.h
new file mode 100644
index 00000000000..8c03392ac83
--- /dev/null
+++ b/drivers/s390/net/lcs.h
@@ -0,0 +1,345 @@
+/*lcs.h*/
+
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/workqueue.h>
+#include <asm/ccwdev.h>
+
+#define LCS_DBF_TEXT(level, name, text) \
+ do { \
+ debug_text_event(lcs_dbf_##name, level, text); \
+ } while (0)
+
+#define LCS_DBF_HEX(level,name,addr,len) \
+do { \
+ debug_event(lcs_dbf_##name,level,(void*)(addr),len); \
+} while (0)
+
+/* Allow to sort out low debug levels early to avoid wasted sprints */
+static inline int lcs_dbf_passes(debug_info_t *dbf_grp, int level)
+{
+ return (level <= dbf_grp->level);
+}
+
+#define LCS_DBF_TEXT_(level,name,text...) \
+ do { \
+ if (lcs_dbf_passes(lcs_dbf_##name, level)) { \
+ sprintf(debug_buffer, text); \
+ debug_text_event(lcs_dbf_##name, level, debug_buffer); \
+ } \
+ } while (0)
+
+/**
+ * sysfs related stuff
+ */
+#define CARD_FROM_DEV(cdev) \
+ (struct lcs_card *) dev_get_drvdata( \
+ &((struct ccwgroup_device *)dev_get_drvdata(&cdev->dev))->dev);
+
+/**
+ * Enum for classifying detected devices.
+ */
+enum lcs_channel_types {
+ /* Device is not a channel */
+ lcs_channel_type_none,
+
+ /* Device is a 2216 channel */
+ lcs_channel_type_parallel,
+
+ /* Device is a 2216 channel */
+ lcs_channel_type_2216,
+
+ /* Device is a OSA2 card */
+ lcs_channel_type_osa2
+};
+
+/**
+ * CCW commands used in this driver
+ */
+#define LCS_CCW_WRITE 0x01
+#define LCS_CCW_READ 0x02
+#define LCS_CCW_TRANSFER 0x08
+
+/**
+ * LCS device status primitives
+ */
+#define LCS_CMD_STARTLAN 0x01
+#define LCS_CMD_STOPLAN 0x02
+#define LCS_CMD_LANSTAT 0x04
+#define LCS_CMD_STARTUP 0x07
+#define LCS_CMD_SHUTDOWN 0x08
+#define LCS_CMD_QIPASSIST 0xb2
+#define LCS_CMD_SETIPM 0xb4
+#define LCS_CMD_DELIPM 0xb5
+
+#define LCS_INITIATOR_TCPIP 0x00
+#define LCS_INITIATOR_LGW 0x01
+#define LCS_STD_CMD_SIZE 16
+#define LCS_MULTICAST_CMD_SIZE 404
+
+/**
+ * LCS IPASSIST MASKS,only used when multicast is switched on
+ */
+/* Not supported by LCS */
+#define LCS_IPASS_ARP_PROCESSING 0x0001
+#define LCS_IPASS_IN_CHECKSUM_SUPPORT 0x0002
+#define LCS_IPASS_OUT_CHECKSUM_SUPPORT 0x0004
+#define LCS_IPASS_IP_FRAG_REASSEMBLY 0x0008
+#define LCS_IPASS_IP_FILTERING 0x0010
+/* Supported by lcs 3172 */
+#define LCS_IPASS_IPV6_SUPPORT 0x0020
+#define LCS_IPASS_MULTICAST_SUPPORT 0x0040
+
+/**
+ * LCS sense byte definitions
+ */
+#define LCS_SENSE_BYTE_0 0
+#define LCS_SENSE_BYTE_1 1
+#define LCS_SENSE_BYTE_2 2
+#define LCS_SENSE_BYTE_3 3
+#define LCS_SENSE_INTERFACE_DISCONNECT 0x01
+#define LCS_SENSE_EQUIPMENT_CHECK 0x10
+#define LCS_SENSE_BUS_OUT_CHECK 0x20
+#define LCS_SENSE_INTERVENTION_REQUIRED 0x40
+#define LCS_SENSE_CMD_REJECT 0x80
+#define LCS_SENSE_RESETTING_EVENT 0x80
+#define LCS_SENSE_DEVICE_ONLINE 0x20
+
+/**
+ * LCS packet type definitions
+ */
+#define LCS_FRAME_TYPE_CONTROL 0
+#define LCS_FRAME_TYPE_ENET 1
+#define LCS_FRAME_TYPE_TR 2
+#define LCS_FRAME_TYPE_FDDI 7
+#define LCS_FRAME_TYPE_AUTO -1
+
+/**
+ * some more definitions,we will sort them later
+ */
+#define LCS_ILLEGAL_OFFSET 0xffff
+#define LCS_IOBUFFERSIZE 0x5000
+#define LCS_NUM_BUFFS 32 /* needs to be power of 2 */
+#define LCS_MAC_LENGTH 6
+#define LCS_INVALID_PORT_NO -1
+#define LCS_LANCMD_TIMEOUT_DEFAULT 5
+
+/**
+ * Multicast state
+ */
+#define LCS_IPM_STATE_SET_REQUIRED 0
+#define LCS_IPM_STATE_DEL_REQUIRED 1
+#define LCS_IPM_STATE_ON_CARD 2
+
+/**
+ * LCS IP Assist declarations
+ * seems to be only used for multicast
+ */
+#define LCS_IPASS_ARP_PROCESSING 0x0001
+#define LCS_IPASS_INBOUND_CSUM_SUPP 0x0002
+#define LCS_IPASS_OUTBOUND_CSUM_SUPP 0x0004
+#define LCS_IPASS_IP_FRAG_REASSEMBLY 0x0008
+#define LCS_IPASS_IP_FILTERING 0x0010
+#define LCS_IPASS_IPV6_SUPPORT 0x0020
+#define LCS_IPASS_MULTICAST_SUPPORT 0x0040
+
+/**
+ * LCS Buffer states
+ */
+enum lcs_buffer_states {
+ LCS_BUF_STATE_EMPTY, /* buffer is empty */
+ LCS_BUF_STATE_LOCKED, /* buffer is locked, don't touch */
+ LCS_BUF_STATE_READY, /* buffer is ready for read/write */
+ LCS_BUF_STATE_PROCESSED,
+};
+
+/**
+ * LCS Channel State Machine declarations
+ */
+enum lcs_channel_states {
+ LCS_CH_STATE_INIT,
+ LCS_CH_STATE_HALTED,
+ LCS_CH_STATE_STOPPED,
+ LCS_CH_STATE_RUNNING,
+ LCS_CH_STATE_SUSPENDED,
+ LCS_CH_STATE_CLEARED,
+ LCS_CH_STATE_ERROR,
+};
+
+/**
+ * LCS device state machine
+ */
+enum lcs_dev_states {
+ DEV_STATE_DOWN,
+ DEV_STATE_UP,
+ DEV_STATE_RECOVER,
+};
+
+enum lcs_threads {
+ LCS_SET_MC_THREAD = 1,
+ LCS_RECOVERY_THREAD = 2,
+};
+
+/**
+ * LCS struct declarations
+ */
+struct lcs_header {
+ __u16 offset;
+ __u8 type;
+ __u8 slot;
+} __attribute__ ((packed));
+
+struct lcs_ip_mac_pair {
+ __be32 ip_addr;
+ __u8 mac_addr[LCS_MAC_LENGTH];
+ __u8 reserved[2];
+} __attribute__ ((packed));
+
+struct lcs_ipm_list {
+ struct list_head list;
+ struct lcs_ip_mac_pair ipm;
+ __u8 ipm_state;
+};
+
+struct lcs_cmd {
+ __u16 offset;
+ __u8 type;
+ __u8 slot;
+ __u8 cmd_code;
+ __u8 initiator;
+ __u16 sequence_no;
+ __u16 return_code;
+ union {
+ struct {
+ __u8 lan_type;
+ __u8 portno;
+ __u16 parameter_count;
+ __u8 operator_flags[3];
+ __u8 reserved[3];
+ } lcs_std_cmd;
+ struct {
+ __u16 unused1;
+ __u16 buff_size;
+ __u8 unused2[6];
+ } lcs_startup;
+ struct {
+ __u8 lan_type;
+ __u8 portno;
+ __u8 unused[10];
+ __u8 mac_addr[LCS_MAC_LENGTH];
+ __u32 num_packets_deblocked;
+ __u32 num_packets_blocked;
+ __u32 num_packets_tx_on_lan;
+ __u32 num_tx_errors_detected;
+ __u32 num_tx_packets_disgarded;
+ __u32 num_packets_rx_from_lan;
+ __u32 num_rx_errors_detected;
+ __u32 num_rx_discarded_nobuffs_avail;
+ __u32 num_rx_packets_too_large;
+ } lcs_lanstat_cmd;
+#ifdef CONFIG_IP_MULTICAST
+ struct {
+ __u8 lan_type;
+ __u8 portno;
+ __u16 num_ip_pairs;
+ __u16 ip_assists_supported;
+ __u16 ip_assists_enabled;
+ __u16 version;
+ struct {
+ struct lcs_ip_mac_pair
+ ip_mac_pair[32];
+ __u32 response_data;
+ } lcs_ipass_ctlmsg __attribute ((packed));
+ } lcs_qipassist __attribute__ ((packed));
+#endif /*CONFIG_IP_MULTICAST */
+ } cmd __attribute__ ((packed));
+} __attribute__ ((packed));
+
+/**
+ * Forward declarations.
+ */
+struct lcs_card;
+struct lcs_channel;
+
+/**
+ * Definition of an lcs buffer.
+ */
+struct lcs_buffer {
+ enum lcs_buffer_states state;
+ void *data;
+ int count;
+ /* Callback for completion notification. */
+ void (*callback)(struct lcs_channel *, struct lcs_buffer *);
+};
+
+struct lcs_reply {
+ struct list_head list;
+ __u16 sequence_no;
+ atomic_t refcnt;
+ /* Callback for completion notification. */
+ void (*callback)(struct lcs_card *, struct lcs_cmd *);
+ wait_queue_head_t wait_q;
+ struct lcs_card *card;
+ int received;
+ int rc;
+};
+
+/**
+ * Definition of an lcs channel
+ */
+struct lcs_channel {
+ enum lcs_channel_states state;
+ struct ccw_device *ccwdev;
+ struct ccw1 ccws[LCS_NUM_BUFFS + 1];
+ wait_queue_head_t wait_q;
+ struct tasklet_struct irq_tasklet;
+ struct lcs_buffer iob[LCS_NUM_BUFFS];
+ int io_idx;
+ int buf_idx;
+};
+
+
+/**
+ * definition of the lcs card
+ */
+struct lcs_card {
+ spinlock_t lock;
+ spinlock_t ipm_lock;
+ enum lcs_dev_states state;
+ struct net_device *dev;
+ struct net_device_stats stats;
+ __be16 (*lan_type_trans)(struct sk_buff *skb,
+ struct net_device *dev);
+ struct ccwgroup_device *gdev;
+ struct lcs_channel read;
+ struct lcs_channel write;
+ struct lcs_buffer *tx_buffer;
+ int tx_emitted;
+ struct list_head lancmd_waiters;
+ int lancmd_timeout;
+
+ struct work_struct kernel_thread_starter;
+ spinlock_t mask_lock;
+ unsigned long thread_start_mask;
+ unsigned long thread_running_mask;
+ unsigned long thread_allowed_mask;
+ wait_queue_head_t wait_q;
+
+#ifdef CONFIG_IP_MULTICAST
+ struct list_head ipm_list;
+#endif
+ __u8 mac[LCS_MAC_LENGTH];
+ __u16 ip_assists_supported;
+ __u16 ip_assists_enabled;
+ __s8 lan_type;
+ __u32 pkt_seq;
+ __u16 sequence_no;
+ __s16 portno;
+ /* Some info copied from probeinfo */
+ u8 device_forced;
+ u8 max_port_no;
+ u8 hint_port_no;
+ s16 port_protocol_no;
+} __attribute__ ((aligned(8)));
+