Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | /*lcs.h*/ |
3 | ||
4 | #include <linux/interrupt.h> | |
5 | #include <linux/netdevice.h> | |
6 | #include <linux/skbuff.h> | |
7 | #include <linux/workqueue.h> | |
c380cd5a | 8 | #include <linux/refcount.h> |
1da177e4 LT |
9 | #include <asm/ccwdev.h> |
10 | ||
1da177e4 LT |
11 | #define LCS_DBF_TEXT(level, name, text) \ |
12 | do { \ | |
13 | debug_text_event(lcs_dbf_##name, level, text); \ | |
14 | } while (0) | |
15 | ||
16 | #define LCS_DBF_HEX(level,name,addr,len) \ | |
17 | do { \ | |
18 | debug_event(lcs_dbf_##name,level,(void*)(addr),len); \ | |
19 | } while (0) | |
20 | ||
21 | #define LCS_DBF_TEXT_(level,name,text...) \ | |
f33780d3 | 22 | do { \ |
8e6a8285 | 23 | if (debug_level_enabled(lcs_dbf_##name, level)) { \ |
f33780d3 PT |
24 | sprintf(debug_buffer, text); \ |
25 | debug_text_event(lcs_dbf_##name, level, debug_buffer); \ | |
26 | } \ | |
27 | } while (0) | |
1da177e4 | 28 | |
1da177e4 LT |
29 | /** |
30 | * sysfs related stuff | |
31 | */ | |
32 | #define CARD_FROM_DEV(cdev) \ | |
dff59b64 GKH |
33 | (struct lcs_card *) dev_get_drvdata( \ |
34 | &((struct ccwgroup_device *)dev_get_drvdata(&cdev->dev))->dev); | |
0ca8cc6f UB |
35 | |
36 | /** | |
37 | * Enum for classifying detected devices. | |
38 | */ | |
39 | enum lcs_channel_types { | |
40 | /* Device is not a channel */ | |
41 | lcs_channel_type_none, | |
42 | ||
43 | /* Device is a 2216 channel */ | |
44 | lcs_channel_type_parallel, | |
45 | ||
46 | /* Device is a 2216 channel */ | |
47 | lcs_channel_type_2216, | |
48 | ||
49 | /* Device is a OSA2 card */ | |
50 | lcs_channel_type_osa2 | |
51 | }; | |
52 | ||
1da177e4 LT |
53 | /** |
54 | * CCW commands used in this driver | |
55 | */ | |
56 | #define LCS_CCW_WRITE 0x01 | |
57 | #define LCS_CCW_READ 0x02 | |
58 | #define LCS_CCW_TRANSFER 0x08 | |
59 | ||
60 | /** | |
61 | * LCS device status primitives | |
62 | */ | |
63 | #define LCS_CMD_STARTLAN 0x01 | |
64 | #define LCS_CMD_STOPLAN 0x02 | |
65 | #define LCS_CMD_LANSTAT 0x04 | |
66 | #define LCS_CMD_STARTUP 0x07 | |
67 | #define LCS_CMD_SHUTDOWN 0x08 | |
68 | #define LCS_CMD_QIPASSIST 0xb2 | |
69 | #define LCS_CMD_SETIPM 0xb4 | |
70 | #define LCS_CMD_DELIPM 0xb5 | |
71 | ||
72 | #define LCS_INITIATOR_TCPIP 0x00 | |
73 | #define LCS_INITIATOR_LGW 0x01 | |
74 | #define LCS_STD_CMD_SIZE 16 | |
75 | #define LCS_MULTICAST_CMD_SIZE 404 | |
76 | ||
77 | /** | |
78 | * LCS IPASSIST MASKS,only used when multicast is switched on | |
79 | */ | |
80 | /* Not supported by LCS */ | |
81 | #define LCS_IPASS_ARP_PROCESSING 0x0001 | |
82 | #define LCS_IPASS_IN_CHECKSUM_SUPPORT 0x0002 | |
83 | #define LCS_IPASS_OUT_CHECKSUM_SUPPORT 0x0004 | |
84 | #define LCS_IPASS_IP_FRAG_REASSEMBLY 0x0008 | |
85 | #define LCS_IPASS_IP_FILTERING 0x0010 | |
86 | /* Supported by lcs 3172 */ | |
87 | #define LCS_IPASS_IPV6_SUPPORT 0x0020 | |
88 | #define LCS_IPASS_MULTICAST_SUPPORT 0x0040 | |
89 | ||
90 | /** | |
91 | * LCS sense byte definitions | |
92 | */ | |
74ef872c KW |
93 | #define LCS_SENSE_BYTE_0 0 |
94 | #define LCS_SENSE_BYTE_1 1 | |
95 | #define LCS_SENSE_BYTE_2 2 | |
96 | #define LCS_SENSE_BYTE_3 3 | |
1da177e4 LT |
97 | #define LCS_SENSE_INTERFACE_DISCONNECT 0x01 |
98 | #define LCS_SENSE_EQUIPMENT_CHECK 0x10 | |
99 | #define LCS_SENSE_BUS_OUT_CHECK 0x20 | |
100 | #define LCS_SENSE_INTERVENTION_REQUIRED 0x40 | |
101 | #define LCS_SENSE_CMD_REJECT 0x80 | |
74ef872c KW |
102 | #define LCS_SENSE_RESETTING_EVENT 0x80 |
103 | #define LCS_SENSE_DEVICE_ONLINE 0x20 | |
1da177e4 LT |
104 | |
105 | /** | |
106 | * LCS packet type definitions | |
107 | */ | |
108 | #define LCS_FRAME_TYPE_CONTROL 0 | |
109 | #define LCS_FRAME_TYPE_ENET 1 | |
110 | #define LCS_FRAME_TYPE_TR 2 | |
111 | #define LCS_FRAME_TYPE_FDDI 7 | |
112 | #define LCS_FRAME_TYPE_AUTO -1 | |
113 | ||
114 | /** | |
115 | * some more definitions,we will sort them later | |
116 | */ | |
117 | #define LCS_ILLEGAL_OFFSET 0xffff | |
118 | #define LCS_IOBUFFERSIZE 0x5000 | |
0d613a27 | 119 | #define LCS_NUM_BUFFS 32 /* needs to be power of 2 */ |
1da177e4 LT |
120 | #define LCS_MAC_LENGTH 6 |
121 | #define LCS_INVALID_PORT_NO -1 | |
122 | #define LCS_LANCMD_TIMEOUT_DEFAULT 5 | |
123 | ||
124 | /** | |
125 | * Multicast state | |
126 | */ | |
127 | #define LCS_IPM_STATE_SET_REQUIRED 0 | |
128 | #define LCS_IPM_STATE_DEL_REQUIRED 1 | |
129 | #define LCS_IPM_STATE_ON_CARD 2 | |
130 | ||
131 | /** | |
132 | * LCS IP Assist declarations | |
133 | * seems to be only used for multicast | |
134 | */ | |
135 | #define LCS_IPASS_ARP_PROCESSING 0x0001 | |
136 | #define LCS_IPASS_INBOUND_CSUM_SUPP 0x0002 | |
137 | #define LCS_IPASS_OUTBOUND_CSUM_SUPP 0x0004 | |
138 | #define LCS_IPASS_IP_FRAG_REASSEMBLY 0x0008 | |
139 | #define LCS_IPASS_IP_FILTERING 0x0010 | |
140 | #define LCS_IPASS_IPV6_SUPPORT 0x0020 | |
141 | #define LCS_IPASS_MULTICAST_SUPPORT 0x0040 | |
142 | ||
143 | /** | |
144 | * LCS Buffer states | |
145 | */ | |
146 | enum lcs_buffer_states { | |
9163bb2e UB |
147 | LCS_BUF_STATE_EMPTY, /* buffer is empty */ |
148 | LCS_BUF_STATE_LOCKED, /* buffer is locked, don't touch */ | |
149 | LCS_BUF_STATE_READY, /* buffer is ready for read/write */ | |
150 | LCS_BUF_STATE_PROCESSED, | |
1da177e4 LT |
151 | }; |
152 | ||
153 | /** | |
154 | * LCS Channel State Machine declarations | |
155 | */ | |
156 | enum lcs_channel_states { | |
9163bb2e UB |
157 | LCS_CH_STATE_INIT, |
158 | LCS_CH_STATE_HALTED, | |
159 | LCS_CH_STATE_STOPPED, | |
160 | LCS_CH_STATE_RUNNING, | |
161 | LCS_CH_STATE_SUSPENDED, | |
162 | LCS_CH_STATE_CLEARED, | |
59579da3 | 163 | LCS_CH_STATE_ERROR, |
1da177e4 LT |
164 | }; |
165 | ||
166 | /** | |
167 | * LCS device state machine | |
168 | */ | |
169 | enum lcs_dev_states { | |
170 | DEV_STATE_DOWN, | |
171 | DEV_STATE_UP, | |
172 | DEV_STATE_RECOVER, | |
173 | }; | |
174 | ||
175 | enum lcs_threads { | |
176 | LCS_SET_MC_THREAD = 1, | |
74ef872c | 177 | LCS_RECOVERY_THREAD = 2, |
1da177e4 | 178 | }; |
74ef872c | 179 | |
1da177e4 LT |
180 | /** |
181 | * LCS struct declarations | |
182 | */ | |
183 | struct lcs_header { | |
184 | __u16 offset; | |
185 | __u8 type; | |
186 | __u8 slot; | |
187 | } __attribute__ ((packed)); | |
188 | ||
189 | struct lcs_ip_mac_pair { | |
5a5a852e | 190 | __be32 ip_addr; |
1da177e4 LT |
191 | __u8 mac_addr[LCS_MAC_LENGTH]; |
192 | __u8 reserved[2]; | |
193 | } __attribute__ ((packed)); | |
194 | ||
195 | struct lcs_ipm_list { | |
196 | struct list_head list; | |
197 | struct lcs_ip_mac_pair ipm; | |
198 | __u8 ipm_state; | |
199 | }; | |
200 | ||
201 | struct lcs_cmd { | |
202 | __u16 offset; | |
203 | __u8 type; | |
204 | __u8 slot; | |
205 | __u8 cmd_code; | |
206 | __u8 initiator; | |
207 | __u16 sequence_no; | |
208 | __u16 return_code; | |
209 | union { | |
210 | struct { | |
211 | __u8 lan_type; | |
212 | __u8 portno; | |
213 | __u16 parameter_count; | |
214 | __u8 operator_flags[3]; | |
215 | __u8 reserved[3]; | |
216 | } lcs_std_cmd; | |
217 | struct { | |
218 | __u16 unused1; | |
219 | __u16 buff_size; | |
220 | __u8 unused2[6]; | |
221 | } lcs_startup; | |
222 | struct { | |
223 | __u8 lan_type; | |
224 | __u8 portno; | |
225 | __u8 unused[10]; | |
226 | __u8 mac_addr[LCS_MAC_LENGTH]; | |
227 | __u32 num_packets_deblocked; | |
228 | __u32 num_packets_blocked; | |
229 | __u32 num_packets_tx_on_lan; | |
230 | __u32 num_tx_errors_detected; | |
231 | __u32 num_tx_packets_disgarded; | |
232 | __u32 num_packets_rx_from_lan; | |
233 | __u32 num_rx_errors_detected; | |
234 | __u32 num_rx_discarded_nobuffs_avail; | |
235 | __u32 num_rx_packets_too_large; | |
236 | } lcs_lanstat_cmd; | |
237 | #ifdef CONFIG_IP_MULTICAST | |
238 | struct { | |
239 | __u8 lan_type; | |
240 | __u8 portno; | |
241 | __u16 num_ip_pairs; | |
242 | __u16 ip_assists_supported; | |
243 | __u16 ip_assists_enabled; | |
244 | __u16 version; | |
245 | struct { | |
246 | struct lcs_ip_mac_pair | |
247 | ip_mac_pair[32]; | |
248 | __u32 response_data; | |
249 | } lcs_ipass_ctlmsg __attribute ((packed)); | |
250 | } lcs_qipassist __attribute__ ((packed)); | |
251 | #endif /*CONFIG_IP_MULTICAST */ | |
252 | } cmd __attribute__ ((packed)); | |
253 | } __attribute__ ((packed)); | |
254 | ||
255 | /** | |
256 | * Forward declarations. | |
257 | */ | |
258 | struct lcs_card; | |
259 | struct lcs_channel; | |
260 | ||
261 | /** | |
262 | * Definition of an lcs buffer. | |
263 | */ | |
264 | struct lcs_buffer { | |
265 | enum lcs_buffer_states state; | |
266 | void *data; | |
267 | int count; | |
268 | /* Callback for completion notification. */ | |
269 | void (*callback)(struct lcs_channel *, struct lcs_buffer *); | |
270 | }; | |
271 | ||
272 | struct lcs_reply { | |
273 | struct list_head list; | |
274 | __u16 sequence_no; | |
c380cd5a | 275 | refcount_t refcnt; |
1da177e4 LT |
276 | /* Callback for completion notification. */ |
277 | void (*callback)(struct lcs_card *, struct lcs_cmd *); | |
278 | wait_queue_head_t wait_q; | |
279 | struct lcs_card *card; | |
9c6c273a | 280 | struct timer_list timer; |
1da177e4 LT |
281 | int received; |
282 | int rc; | |
283 | }; | |
284 | ||
285 | /** | |
286 | * Definition of an lcs channel | |
287 | */ | |
288 | struct lcs_channel { | |
289 | enum lcs_channel_states state; | |
290 | struct ccw_device *ccwdev; | |
291 | struct ccw1 ccws[LCS_NUM_BUFFS + 1]; | |
292 | wait_queue_head_t wait_q; | |
293 | struct tasklet_struct irq_tasklet; | |
294 | struct lcs_buffer iob[LCS_NUM_BUFFS]; | |
295 | int io_idx; | |
296 | int buf_idx; | |
297 | }; | |
298 | ||
299 | ||
300 | /** | |
301 | * definition of the lcs card | |
302 | */ | |
303 | struct lcs_card { | |
304 | spinlock_t lock; | |
305 | spinlock_t ipm_lock; | |
306 | enum lcs_dev_states state; | |
307 | struct net_device *dev; | |
308 | struct net_device_stats stats; | |
5a5a852e | 309 | __be16 (*lan_type_trans)(struct sk_buff *skb, |
1da177e4 | 310 | struct net_device *dev); |
74ef872c | 311 | struct ccwgroup_device *gdev; |
1da177e4 LT |
312 | struct lcs_channel read; |
313 | struct lcs_channel write; | |
314 | struct lcs_buffer *tx_buffer; | |
315 | int tx_emitted; | |
316 | struct list_head lancmd_waiters; | |
317 | int lancmd_timeout; | |
318 | ||
319 | struct work_struct kernel_thread_starter; | |
320 | spinlock_t mask_lock; | |
321 | unsigned long thread_start_mask; | |
322 | unsigned long thread_running_mask; | |
323 | unsigned long thread_allowed_mask; | |
324 | wait_queue_head_t wait_q; | |
325 | ||
326 | #ifdef CONFIG_IP_MULTICAST | |
327 | struct list_head ipm_list; | |
328 | #endif | |
329 | __u8 mac[LCS_MAC_LENGTH]; | |
330 | __u16 ip_assists_supported; | |
331 | __u16 ip_assists_enabled; | |
332 | __s8 lan_type; | |
333 | __u32 pkt_seq; | |
334 | __u16 sequence_no; | |
335 | __s16 portno; | |
336 | /* Some info copied from probeinfo */ | |
337 | u8 device_forced; | |
338 | u8 max_port_no; | |
339 | u8 hint_port_no; | |
340 | s16 port_protocol_no; | |
341 | } __attribute__ ((aligned(8))); | |
342 |