Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
[linux-2.6] / drivers / s390 / net / lcs.h
1 /*lcs.h*/
2
3 #include <linux/interrupt.h>
4 #include <linux/netdevice.h>
5 #include <linux/skbuff.h>
6 #include <linux/workqueue.h>
7 #include <asm/ccwdev.h>
8
9 #define LCS_DBF_TEXT(level, name, text) \
10         do { \
11                 debug_text_event(lcs_dbf_##name, level, text); \
12         } while (0)
13
14 #define LCS_DBF_HEX(level,name,addr,len) \
15 do { \
16         debug_event(lcs_dbf_##name,level,(void*)(addr),len); \
17 } while (0)
18
19 #define LCS_DBF_TEXT_(level,name,text...) \
20 do {                                       \
21         sprintf(debug_buffer, text);  \
22                 debug_text_event(lcs_dbf_##name,level, debug_buffer);\
23 } while (0)
24
25 /**
26  *      sysfs related stuff
27  */
28 #define CARD_FROM_DEV(cdev) \
29         (struct lcs_card *) \
30         ((struct ccwgroup_device *)cdev->dev.driver_data)->dev.driver_data;
31 /**
32  * CCW commands used in this driver
33  */
34 #define LCS_CCW_WRITE           0x01
35 #define LCS_CCW_READ            0x02
36 #define LCS_CCW_TRANSFER        0x08
37
38 /**
39  * LCS device status primitives
40  */
41 #define LCS_CMD_STARTLAN        0x01
42 #define LCS_CMD_STOPLAN         0x02
43 #define LCS_CMD_LANSTAT         0x04
44 #define LCS_CMD_STARTUP         0x07
45 #define LCS_CMD_SHUTDOWN        0x08
46 #define LCS_CMD_QIPASSIST       0xb2
47 #define LCS_CMD_SETIPM          0xb4
48 #define LCS_CMD_DELIPM          0xb5
49
50 #define LCS_INITIATOR_TCPIP     0x00
51 #define LCS_INITIATOR_LGW       0x01
52 #define LCS_STD_CMD_SIZE        16
53 #define LCS_MULTICAST_CMD_SIZE  404
54
55 /**
56  * LCS IPASSIST MASKS,only used when multicast is switched on
57  */
58 /* Not supported by LCS */
59 #define LCS_IPASS_ARP_PROCESSING        0x0001
60 #define LCS_IPASS_IN_CHECKSUM_SUPPORT   0x0002
61 #define LCS_IPASS_OUT_CHECKSUM_SUPPORT  0x0004
62 #define LCS_IPASS_IP_FRAG_REASSEMBLY    0x0008
63 #define LCS_IPASS_IP_FILTERING          0x0010
64 /* Supported by lcs 3172 */
65 #define LCS_IPASS_IPV6_SUPPORT          0x0020
66 #define LCS_IPASS_MULTICAST_SUPPORT     0x0040
67
68 /**
69  * LCS sense byte definitions
70  */
71 #define LCS_SENSE_BYTE_0                0
72 #define LCS_SENSE_BYTE_1                1
73 #define LCS_SENSE_BYTE_2                2
74 #define LCS_SENSE_BYTE_3                3
75 #define LCS_SENSE_INTERFACE_DISCONNECT  0x01
76 #define LCS_SENSE_EQUIPMENT_CHECK       0x10
77 #define LCS_SENSE_BUS_OUT_CHECK         0x20
78 #define LCS_SENSE_INTERVENTION_REQUIRED 0x40
79 #define LCS_SENSE_CMD_REJECT            0x80
80 #define LCS_SENSE_RESETTING_EVENT       0x80
81 #define LCS_SENSE_DEVICE_ONLINE         0x20
82
83 /**
84  * LCS packet type definitions
85  */
86 #define LCS_FRAME_TYPE_CONTROL          0
87 #define LCS_FRAME_TYPE_ENET             1
88 #define LCS_FRAME_TYPE_TR               2
89 #define LCS_FRAME_TYPE_FDDI             7
90 #define LCS_FRAME_TYPE_AUTO             -1
91
92 /**
93  * some more definitions,we will sort them later
94  */
95 #define LCS_ILLEGAL_OFFSET              0xffff
96 #define LCS_IOBUFFERSIZE                0x5000
97 #define LCS_NUM_BUFFS                   32      /* needs to be power of 2 */
98 #define LCS_MAC_LENGTH                  6
99 #define LCS_INVALID_PORT_NO             -1
100 #define LCS_LANCMD_TIMEOUT_DEFAULT      5
101
102 /**
103  * Multicast state
104  */
105 #define  LCS_IPM_STATE_SET_REQUIRED     0
106 #define  LCS_IPM_STATE_DEL_REQUIRED     1
107 #define  LCS_IPM_STATE_ON_CARD          2
108
109 /**
110  * LCS IP Assist declarations
111  * seems to be only used for multicast
112  */
113 #define  LCS_IPASS_ARP_PROCESSING       0x0001
114 #define  LCS_IPASS_INBOUND_CSUM_SUPP    0x0002
115 #define  LCS_IPASS_OUTBOUND_CSUM_SUPP   0x0004
116 #define  LCS_IPASS_IP_FRAG_REASSEMBLY   0x0008
117 #define  LCS_IPASS_IP_FILTERING         0x0010
118 #define  LCS_IPASS_IPV6_SUPPORT         0x0020
119 #define  LCS_IPASS_MULTICAST_SUPPORT    0x0040
120
121 /**
122  * LCS Buffer states
123  */
124 enum lcs_buffer_states {
125         LCS_BUF_STATE_EMPTY,    /* buffer is empty */
126         LCS_BUF_STATE_LOCKED,   /* buffer is locked, don't touch */
127         LCS_BUF_STATE_READY,    /* buffer is ready for read/write */
128         LCS_BUF_STATE_PROCESSED,
129 };
130
131 /**
132  * LCS Channel State Machine declarations
133  */
134 enum lcs_channel_states {
135         LCS_CH_STATE_INIT,
136         LCS_CH_STATE_HALTED,
137         LCS_CH_STATE_STOPPED,
138         LCS_CH_STATE_RUNNING,
139         LCS_CH_STATE_SUSPENDED,
140         LCS_CH_STATE_CLEARED,
141 };
142
143 /**
144  * LCS device state machine
145  */
146 enum lcs_dev_states {
147         DEV_STATE_DOWN,
148         DEV_STATE_UP,
149         DEV_STATE_RECOVER,
150 };
151
152 enum lcs_threads {
153         LCS_SET_MC_THREAD       = 1,
154         LCS_RECOVERY_THREAD     = 2,
155 };
156
157 /**
158  * LCS struct declarations
159  */
160 struct lcs_header {
161         __u16  offset;
162         __u8   type;
163         __u8   slot;
164 }  __attribute__ ((packed));
165
166 struct lcs_ip_mac_pair {
167         __be32  ip_addr;
168         __u8   mac_addr[LCS_MAC_LENGTH];
169         __u8   reserved[2];
170 }  __attribute__ ((packed));
171
172 struct lcs_ipm_list {
173         struct list_head list;
174         struct lcs_ip_mac_pair ipm;
175         __u8 ipm_state;
176 };
177
178 struct lcs_cmd {
179         __u16  offset;
180         __u8   type;
181         __u8   slot;
182         __u8   cmd_code;
183         __u8   initiator;
184         __u16  sequence_no;
185         __u16  return_code;
186         union {
187                 struct {
188                         __u8   lan_type;
189                         __u8   portno;
190                         __u16  parameter_count;
191                         __u8   operator_flags[3];
192                         __u8   reserved[3];
193                 } lcs_std_cmd;
194                 struct {
195                         __u16  unused1;
196                         __u16  buff_size;
197                         __u8   unused2[6];
198                 } lcs_startup;
199                 struct {
200                         __u8   lan_type;
201                         __u8   portno;
202                         __u8   unused[10];
203                         __u8   mac_addr[LCS_MAC_LENGTH];
204                         __u32  num_packets_deblocked;
205                         __u32  num_packets_blocked;
206                         __u32  num_packets_tx_on_lan;
207                         __u32  num_tx_errors_detected;
208                         __u32  num_tx_packets_disgarded;
209                         __u32  num_packets_rx_from_lan;
210                         __u32  num_rx_errors_detected;
211                         __u32  num_rx_discarded_nobuffs_avail;
212                         __u32  num_rx_packets_too_large;
213                 } lcs_lanstat_cmd;
214 #ifdef CONFIG_IP_MULTICAST
215                 struct {
216                         __u8   lan_type;
217                         __u8   portno;
218                         __u16  num_ip_pairs;
219                         __u16  ip_assists_supported;
220                         __u16  ip_assists_enabled;
221                         __u16  version;
222                         struct {
223                                 struct lcs_ip_mac_pair
224                                 ip_mac_pair[32];
225                                 __u32     response_data;
226                         } lcs_ipass_ctlmsg __attribute ((packed));
227                 } lcs_qipassist __attribute__ ((packed));
228 #endif /*CONFIG_IP_MULTICAST */
229         } cmd __attribute__ ((packed));
230 }  __attribute__ ((packed));
231
232 /**
233  * Forward declarations.
234  */
235 struct lcs_card;
236 struct lcs_channel;
237
238 /**
239  * Definition of an lcs buffer.
240  */
241 struct lcs_buffer {
242         enum lcs_buffer_states state;
243         void *data;
244         int count;
245         /* Callback for completion notification. */
246         void (*callback)(struct lcs_channel *, struct lcs_buffer *);
247 };
248
249 struct lcs_reply {
250         struct list_head list;
251         __u16 sequence_no;
252         atomic_t refcnt;
253         /* Callback for completion notification. */
254         void (*callback)(struct lcs_card *, struct lcs_cmd *);
255         wait_queue_head_t wait_q;
256         struct lcs_card *card;
257         int received;
258         int rc;
259 };
260
261 /**
262  * Definition of an lcs channel
263  */
264 struct lcs_channel {
265         enum lcs_channel_states state;
266         struct ccw_device *ccwdev;
267         struct ccw1 ccws[LCS_NUM_BUFFS + 1];
268         wait_queue_head_t wait_q;
269         struct tasklet_struct irq_tasklet;
270         struct lcs_buffer iob[LCS_NUM_BUFFS];
271         int io_idx;
272         int buf_idx;
273 };
274
275
276 /**
277  * definition of the lcs card
278  */
279 struct lcs_card {
280         spinlock_t lock;
281         spinlock_t ipm_lock;
282         enum lcs_dev_states state;
283         struct net_device *dev;
284         struct net_device_stats stats;
285         __be16 (*lan_type_trans)(struct sk_buff *skb,
286                                          struct net_device *dev);
287         struct ccwgroup_device *gdev;
288         struct lcs_channel read;
289         struct lcs_channel write;
290         struct lcs_buffer *tx_buffer;
291         int tx_emitted;
292         struct list_head lancmd_waiters;
293         int lancmd_timeout;
294
295         struct work_struct kernel_thread_starter;
296         spinlock_t mask_lock;
297         unsigned long thread_start_mask;
298         unsigned long thread_running_mask;
299         unsigned long thread_allowed_mask;
300         wait_queue_head_t wait_q;
301
302 #ifdef CONFIG_IP_MULTICAST
303         struct list_head ipm_list;
304 #endif
305         __u8 mac[LCS_MAC_LENGTH];
306         __u16 ip_assists_supported;
307         __u16 ip_assists_enabled;
308         __s8 lan_type;
309         __u32 pkt_seq;
310         __u16 sequence_no;
311         __s16 portno;
312         /* Some info copied from probeinfo */
313         u8 device_forced;
314         u8 max_port_no;
315         u8 hint_port_no;
316         s16 port_protocol_no;
317 }  __attribute__ ((aligned(8)));
318