tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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) \
15do { \
16 debug_event(lcs_dbf_##name,level,(void*)(addr),len); \
17} while (0)
18
19#define LCS_DBF_TEXT_(level,name,text...) \
20do { \
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 */
124enum 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 */
134enum 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 LCS_CH_STATE_ERROR,
142};
143
144/**
145 * LCS device state machine
146 */
147enum lcs_dev_states {
148 DEV_STATE_DOWN,
149 DEV_STATE_UP,
150 DEV_STATE_RECOVER,
151};
152
153enum lcs_threads {
154 LCS_SET_MC_THREAD = 1,
155 LCS_RECOVERY_THREAD = 2,
156};
157
158/**
159 * LCS struct declarations
160 */
161struct lcs_header {
162 __u16 offset;
163 __u8 type;
164 __u8 slot;
165} __attribute__ ((packed));
166
167struct lcs_ip_mac_pair {
168 __be32 ip_addr;
169 __u8 mac_addr[LCS_MAC_LENGTH];
170 __u8 reserved[2];
171} __attribute__ ((packed));
172
173struct lcs_ipm_list {
174 struct list_head list;
175 struct lcs_ip_mac_pair ipm;
176 __u8 ipm_state;
177};
178
179struct lcs_cmd {
180 __u16 offset;
181 __u8 type;
182 __u8 slot;
183 __u8 cmd_code;
184 __u8 initiator;
185 __u16 sequence_no;
186 __u16 return_code;
187 union {
188 struct {
189 __u8 lan_type;
190 __u8 portno;
191 __u16 parameter_count;
192 __u8 operator_flags[3];
193 __u8 reserved[3];
194 } lcs_std_cmd;
195 struct {
196 __u16 unused1;
197 __u16 buff_size;
198 __u8 unused2[6];
199 } lcs_startup;
200 struct {
201 __u8 lan_type;
202 __u8 portno;
203 __u8 unused[10];
204 __u8 mac_addr[LCS_MAC_LENGTH];
205 __u32 num_packets_deblocked;
206 __u32 num_packets_blocked;
207 __u32 num_packets_tx_on_lan;
208 __u32 num_tx_errors_detected;
209 __u32 num_tx_packets_disgarded;
210 __u32 num_packets_rx_from_lan;
211 __u32 num_rx_errors_detected;
212 __u32 num_rx_discarded_nobuffs_avail;
213 __u32 num_rx_packets_too_large;
214 } lcs_lanstat_cmd;
215#ifdef CONFIG_IP_MULTICAST
216 struct {
217 __u8 lan_type;
218 __u8 portno;
219 __u16 num_ip_pairs;
220 __u16 ip_assists_supported;
221 __u16 ip_assists_enabled;
222 __u16 version;
223 struct {
224 struct lcs_ip_mac_pair
225 ip_mac_pair[32];
226 __u32 response_data;
227 } lcs_ipass_ctlmsg __attribute ((packed));
228 } lcs_qipassist __attribute__ ((packed));
229#endif /*CONFIG_IP_MULTICAST */
230 } cmd __attribute__ ((packed));
231} __attribute__ ((packed));
232
233/**
234 * Forward declarations.
235 */
236struct lcs_card;
237struct lcs_channel;
238
239/**
240 * Definition of an lcs buffer.
241 */
242struct lcs_buffer {
243 enum lcs_buffer_states state;
244 void *data;
245 int count;
246 /* Callback for completion notification. */
247 void (*callback)(struct lcs_channel *, struct lcs_buffer *);
248};
249
250struct lcs_reply {
251 struct list_head list;
252 __u16 sequence_no;
253 atomic_t refcnt;
254 /* Callback for completion notification. */
255 void (*callback)(struct lcs_card *, struct lcs_cmd *);
256 wait_queue_head_t wait_q;
257 struct lcs_card *card;
258 int received;
259 int rc;
260};
261
262/**
263 * Definition of an lcs channel
264 */
265struct lcs_channel {
266 enum lcs_channel_states state;
267 struct ccw_device *ccwdev;
268 struct ccw1 ccws[LCS_NUM_BUFFS + 1];
269 wait_queue_head_t wait_q;
270 struct tasklet_struct irq_tasklet;
271 struct lcs_buffer iob[LCS_NUM_BUFFS];
272 int io_idx;
273 int buf_idx;
274};
275
276
277/**
278 * definition of the lcs card
279 */
280struct lcs_card {
281 spinlock_t lock;
282 spinlock_t ipm_lock;
283 enum lcs_dev_states state;
284 struct net_device *dev;
285 struct net_device_stats stats;
286 __be16 (*lan_type_trans)(struct sk_buff *skb,
287 struct net_device *dev);
288 struct ccwgroup_device *gdev;
289 struct lcs_channel read;
290 struct lcs_channel write;
291 struct lcs_buffer *tx_buffer;
292 int tx_emitted;
293 struct list_head lancmd_waiters;
294 int lancmd_timeout;
295
296 struct work_struct kernel_thread_starter;
297 spinlock_t mask_lock;
298 unsigned long thread_start_mask;
299 unsigned long thread_running_mask;
300 unsigned long thread_allowed_mask;
301 wait_queue_head_t wait_q;
302
303#ifdef CONFIG_IP_MULTICAST
304 struct list_head ipm_list;
305#endif
306 __u8 mac[LCS_MAC_LENGTH];
307 __u16 ip_assists_supported;
308 __u16 ip_assists_enabled;
309 __s8 lan_type;
310 __u32 pkt_seq;
311 __u16 sequence_no;
312 __s16 portno;
313 /* Some info copied from probeinfo */
314 u8 device_forced;
315 u8 max_port_no;
316 u8 hint_port_no;
317 s16 port_protocol_no;
318} __attribute__ ((aligned(8)));
319