This source file includes following definitions.
- qeth_close_dev_handler
- qeth_get_cardname
- qeth_get_cardname_short
- qeth_set_allowed_threads
- qeth_threads_running
- qeth_clear_working_pool_list
- qeth_alloc_buffer_pool
- qeth_realloc_buffer_pool
- qeth_free_qdio_queue
- qeth_alloc_qdio_queue
- qeth_cq_init
- qeth_alloc_cq
- qeth_free_cq
- qeth_compute_cq_notification
- qeth_cleanup_handled_pending
- qeth_qdio_handle_aob
- qeth_is_cq
- qeth_setup_ccw
- __qeth_issue_next_read
- qeth_issue_next_read
- qeth_enqueue_cmd
- qeth_dequeue_cmd
- qeth_notify_cmd
- qeth_issue_ipa_msg
- qeth_check_ipa_data
- qeth_clear_ipacmd_list
- qeth_check_idx_response
- qeth_put_cmd
- qeth_release_buffer_cb
- qeth_cancel_cmd
- qeth_alloc_cmd
- qeth_issue_next_read_cb
- qeth_set_thread_start_bit
- qeth_clear_thread_start_bit
- qeth_clear_thread_running_bit
- __qeth_do_run_thread
- qeth_do_run_thread
- qeth_schedule_recovery
- qeth_get_problem
- qeth_check_irb_error
- qeth_irq
- qeth_notify_skbs
- qeth_tx_complete_buf
- qeth_clear_output_buffer
- qeth_drain_output_queue
- qeth_drain_output_queues
- qeth_free_buffer_pool
- qeth_clean_channel
- qeth_setup_channel
- qeth_osa_set_output_queues
- qeth_update_from_chp_desc
- qeth_init_qdio_info
- qeth_set_initial_options
- qeth_do_start_thread
- qeth_start_kernel_thread
- qeth_setup_card
- qeth_core_sl_print
- qeth_alloc_card
- qeth_clear_channel
- qeth_halt_channel
- qeth_stop_channel
- qeth_halt_channels
- qeth_clear_channels
- qeth_clear_halt_card
- qeth_qdio_clear_card
- qeth_vm_detect_layer
- qeth_enforce_discipline
- qeth_set_blkt_defaults
- qeth_init_tokens
- qeth_init_func_level
- qeth_idx_finalize_cmd
- qeth_peer_func_level
- qeth_mpc_finalize_cmd
- qeth_mpc_alloc_cmd
- qeth_send_control_data
- qeth_read_conf_data_cb
- qeth_read_conf_data
- qeth_idx_check_activate_response
- qeth_idx_activate_read_channel_cb
- qeth_idx_activate_write_channel_cb
- qeth_idx_setup_activate_cmd
- qeth_idx_activate_read_channel
- qeth_idx_activate_write_channel
- qeth_cm_enable_cb
- qeth_cm_enable
- qeth_cm_setup_cb
- qeth_cm_setup
- qeth_update_max_mtu
- qeth_get_mtu_outof_framesize
- qeth_ulp_enable_cb
- qeth_mpc_select_prot_type
- qeth_ulp_enable
- qeth_ulp_setup_cb
- qeth_ulp_setup
- qeth_init_qdio_out_buf
- qeth_free_output_queue
- qeth_alloc_output_queue
- qeth_tx_completion_timer
- qeth_alloc_qdio_queues
- qeth_free_qdio_queues
- qeth_create_qib_param_field
- qeth_create_qib_param_field_blkt
- qeth_qdio_activate
- qeth_dm_act
- qeth_mpc_initialize
- qeth_print_status_message
- qeth_initialize_working_pool_list
- qeth_find_free_buffer_pool_entry
- qeth_init_input_buffer
- qeth_init_qdio_queues
- qeth_ipa_finalize_cmd
- qeth_prepare_ipa_cmd
- qeth_ipa_alloc_cmd
- qeth_send_ipa_cmd_cb
- qeth_send_ipa_cmd
- qeth_send_startlan_cb
- qeth_send_startlan
- qeth_setadpparms_inspect_rc
- qeth_query_setadapterparms_cb
- qeth_get_adapter_cmd
- qeth_query_setadapterparms
- qeth_query_ipassists_cb
- qeth_query_ipassists
- qeth_query_switch_attributes_cb
- qeth_query_switch_attributes
- qeth_get_diag_cmd
- qeth_query_setdiagass_cb
- qeth_query_setdiagass
- qeth_get_trap_id
- qeth_hw_trap_cb
- qeth_hw_trap
- qeth_check_qdio_errors
- qeth_queue_input_buffer
- qeth_buffer_reclaim_work
- qeth_handle_send_error
- qeth_prep_flush_pack_buffer
- qeth_switch_to_packing_if_needed
- qeth_switch_to_nonpacking_if_needed
- qeth_flush_buffers
- qeth_flush_queue
- qeth_check_outbound_queue
- qeth_qdio_start_poll
- qeth_configure_cq
- qeth_qdio_cq_handler
- qeth_qdio_input_handler
- qeth_qdio_output_handler
- qeth_get_priority_queue
- qeth_get_elements_for_frags
- qeth_count_elements
- qeth_add_hw_header
- qeth_iqd_may_bulk
- __qeth_fill_buffer
- qeth_fill_buffer
- __qeth_xmit
- qeth_do_send_packet
- qeth_fill_tso_ext
- qeth_xmit
- qeth_setadp_promisc_mode_cb
- qeth_setadp_promisc_mode
- qeth_setadpparms_change_macaddr_cb
- qeth_setadpparms_change_macaddr
- qeth_setadpparms_set_access_ctrl_cb
- qeth_setadpparms_set_access_ctrl
- qeth_set_access_ctrl_online
- qeth_tx_timeout
- qeth_mdio_read
- qeth_snmp_command_cb
- qeth_snmp_command
- qeth_setadpparms_query_oat_cb
- qeth_query_oat_command
- qeth_query_card_info_cb
- qeth_query_card_info
- qeth_vm_request_mac
- qeth_determine_capabilities
- qeth_qdio_establish_cq
- qeth_qdio_establish
- qeth_core_free_card
- qeth_trace_features
- qeth_core_hardsetup_card
- qeth_create_skb_frag
- qeth_is_last_sbale
- qeth_core_get_next_skb
- qeth_poll
- qeth_iqd_tx_complete
- qeth_tx_poll
- qeth_setassparms_inspect_rc
- qeth_setassparms_get_caps_cb
- qeth_setassparms_cb
- qeth_get_setassparms_cmd
- qeth_send_simple_setassparms_prot
- qeth_unregister_dbf_views
- qeth_dbf_longtext
- qeth_register_dbf_views
- qeth_core_load_discipline
- qeth_core_free_discipline
- qeth_get_dbf_entry
- qeth_add_dbf_entry
- qeth_clear_dbf_list
- qeth_alloc_netdev
- qeth_clone_netdev
- qeth_core_probe_device
- qeth_core_remove_device
- qeth_core_set_online
- qeth_core_set_offline
- qeth_core_shutdown
- qeth_suspend
- qeth_resume
- group_store
- qeth_get_card_by_busid
- qeth_do_ioctl
- qeth_start_csum_cb
- qeth_set_csum_off
- qeth_set_csum_on
- qeth_set_ipa_csum
- qeth_start_tso_cb
- qeth_set_tso_off
- qeth_set_tso_on
- qeth_set_ipa_tso
- qeth_set_ipa_rx_csum
- qeth_enable_hw_features
- qeth_set_features
- qeth_fix_features
- qeth_features_check
- qeth_get_stats64
- qeth_iqd_select_queue
- qeth_open
- qeth_stop
- qeth_core_init
- qeth_core_exit
1
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5
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7
8
9
10 #define KMSG_COMPONENT "qeth"
11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
12
13 #include <linux/compat.h>
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/log2.h>
20 #include <linux/ip.h>
21 #include <linux/tcp.h>
22 #include <linux/mii.h>
23 #include <linux/mm.h>
24 #include <linux/kthread.h>
25 #include <linux/slab.h>
26 #include <linux/if_vlan.h>
27 #include <linux/netdevice.h>
28 #include <linux/netdev_features.h>
29 #include <linux/skbuff.h>
30 #include <linux/vmalloc.h>
31
32 #include <net/iucv/af_iucv.h>
33 #include <net/dsfield.h>
34
35 #include <asm/ebcdic.h>
36 #include <asm/chpid.h>
37 #include <asm/io.h>
38 #include <asm/sysinfo.h>
39 #include <asm/diag.h>
40 #include <asm/cio.h>
41 #include <asm/ccwdev.h>
42 #include <asm/cpcmd.h>
43
44 #include "qeth_core.h"
45
46 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
47
48
49 [QETH_DBF_SETUP] = {"qeth_setup",
50 8, 1, 8, 5, &debug_hex_ascii_view, NULL},
51 [QETH_DBF_MSG] = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
52 &debug_sprintf_view, NULL},
53 [QETH_DBF_CTRL] = {"qeth_control",
54 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
55 };
56 EXPORT_SYMBOL_GPL(qeth_dbf);
57
58 struct kmem_cache *qeth_core_header_cache;
59 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
60 static struct kmem_cache *qeth_qdio_outbuf_cache;
61
62 static struct device *qeth_core_root_dev;
63 static struct lock_class_key qdio_out_skb_queue_key;
64
65 static void qeth_issue_next_read_cb(struct qeth_card *card,
66 struct qeth_cmd_buffer *iob,
67 unsigned int data_length);
68 static void qeth_free_buffer_pool(struct qeth_card *);
69 static int qeth_qdio_establish(struct qeth_card *);
70 static void qeth_free_qdio_queues(struct qeth_card *card);
71 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
72 struct qeth_qdio_out_buffer *buf,
73 enum iucv_tx_notify notification);
74 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
75 int budget);
76 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
77
78 static void qeth_close_dev_handler(struct work_struct *work)
79 {
80 struct qeth_card *card;
81
82 card = container_of(work, struct qeth_card, close_dev_work);
83 QETH_CARD_TEXT(card, 2, "cldevhdl");
84 ccwgroup_set_offline(card->gdev);
85 }
86
87 static const char *qeth_get_cardname(struct qeth_card *card)
88 {
89 if (IS_VM_NIC(card)) {
90 switch (card->info.type) {
91 case QETH_CARD_TYPE_OSD:
92 return " Virtual NIC QDIO";
93 case QETH_CARD_TYPE_IQD:
94 return " Virtual NIC Hiper";
95 case QETH_CARD_TYPE_OSM:
96 return " Virtual NIC QDIO - OSM";
97 case QETH_CARD_TYPE_OSX:
98 return " Virtual NIC QDIO - OSX";
99 default:
100 return " unknown";
101 }
102 } else {
103 switch (card->info.type) {
104 case QETH_CARD_TYPE_OSD:
105 return " OSD Express";
106 case QETH_CARD_TYPE_IQD:
107 return " HiperSockets";
108 case QETH_CARD_TYPE_OSN:
109 return " OSN QDIO";
110 case QETH_CARD_TYPE_OSM:
111 return " OSM QDIO";
112 case QETH_CARD_TYPE_OSX:
113 return " OSX QDIO";
114 default:
115 return " unknown";
116 }
117 }
118 return " n/a";
119 }
120
121
122 const char *qeth_get_cardname_short(struct qeth_card *card)
123 {
124 if (IS_VM_NIC(card)) {
125 switch (card->info.type) {
126 case QETH_CARD_TYPE_OSD:
127 return "Virt.NIC QDIO";
128 case QETH_CARD_TYPE_IQD:
129 return "Virt.NIC Hiper";
130 case QETH_CARD_TYPE_OSM:
131 return "Virt.NIC OSM";
132 case QETH_CARD_TYPE_OSX:
133 return "Virt.NIC OSX";
134 default:
135 return "unknown";
136 }
137 } else {
138 switch (card->info.type) {
139 case QETH_CARD_TYPE_OSD:
140 switch (card->info.link_type) {
141 case QETH_LINK_TYPE_FAST_ETH:
142 return "OSD_100";
143 case QETH_LINK_TYPE_HSTR:
144 return "HSTR";
145 case QETH_LINK_TYPE_GBIT_ETH:
146 return "OSD_1000";
147 case QETH_LINK_TYPE_10GBIT_ETH:
148 return "OSD_10GIG";
149 case QETH_LINK_TYPE_25GBIT_ETH:
150 return "OSD_25GIG";
151 case QETH_LINK_TYPE_LANE_ETH100:
152 return "OSD_FE_LANE";
153 case QETH_LINK_TYPE_LANE_TR:
154 return "OSD_TR_LANE";
155 case QETH_LINK_TYPE_LANE_ETH1000:
156 return "OSD_GbE_LANE";
157 case QETH_LINK_TYPE_LANE:
158 return "OSD_ATM_LANE";
159 default:
160 return "OSD_Express";
161 }
162 case QETH_CARD_TYPE_IQD:
163 return "HiperSockets";
164 case QETH_CARD_TYPE_OSN:
165 return "OSN";
166 case QETH_CARD_TYPE_OSM:
167 return "OSM_1000";
168 case QETH_CARD_TYPE_OSX:
169 return "OSX_10GIG";
170 default:
171 return "unknown";
172 }
173 }
174 return "n/a";
175 }
176
177 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
178 int clear_start_mask)
179 {
180 unsigned long flags;
181
182 spin_lock_irqsave(&card->thread_mask_lock, flags);
183 card->thread_allowed_mask = threads;
184 if (clear_start_mask)
185 card->thread_start_mask &= threads;
186 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
187 wake_up(&card->wait_q);
188 }
189 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
190
191 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
192 {
193 unsigned long flags;
194 int rc = 0;
195
196 spin_lock_irqsave(&card->thread_mask_lock, flags);
197 rc = (card->thread_running_mask & threads);
198 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
199 return rc;
200 }
201 EXPORT_SYMBOL_GPL(qeth_threads_running);
202
203 void qeth_clear_working_pool_list(struct qeth_card *card)
204 {
205 struct qeth_buffer_pool_entry *pool_entry, *tmp;
206
207 QETH_CARD_TEXT(card, 5, "clwrklst");
208 list_for_each_entry_safe(pool_entry, tmp,
209 &card->qdio.in_buf_pool.entry_list, list){
210 list_del(&pool_entry->list);
211 }
212 }
213 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
214
215 static int qeth_alloc_buffer_pool(struct qeth_card *card)
216 {
217 struct qeth_buffer_pool_entry *pool_entry;
218 void *ptr;
219 int i, j;
220
221 QETH_CARD_TEXT(card, 5, "alocpool");
222 for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
223 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
224 if (!pool_entry) {
225 qeth_free_buffer_pool(card);
226 return -ENOMEM;
227 }
228 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
229 ptr = (void *) __get_free_page(GFP_KERNEL);
230 if (!ptr) {
231 while (j > 0)
232 free_page((unsigned long)
233 pool_entry->elements[--j]);
234 kfree(pool_entry);
235 qeth_free_buffer_pool(card);
236 return -ENOMEM;
237 }
238 pool_entry->elements[j] = ptr;
239 }
240 list_add(&pool_entry->init_list,
241 &card->qdio.init_pool.entry_list);
242 }
243 return 0;
244 }
245
246 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
247 {
248 QETH_CARD_TEXT(card, 2, "realcbp");
249
250 if (card->state != CARD_STATE_DOWN)
251 return -EPERM;
252
253
254 qeth_clear_working_pool_list(card);
255 qeth_free_buffer_pool(card);
256 card->qdio.in_buf_pool.buf_count = bufcnt;
257 card->qdio.init_pool.buf_count = bufcnt;
258 return qeth_alloc_buffer_pool(card);
259 }
260 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
261
262 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
263 {
264 if (!q)
265 return;
266
267 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
268 kfree(q);
269 }
270
271 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
272 {
273 struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
274 int i;
275
276 if (!q)
277 return NULL;
278
279 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
280 kfree(q);
281 return NULL;
282 }
283
284 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
285 q->bufs[i].buffer = q->qdio_bufs[i];
286
287 QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
288 return q;
289 }
290
291 static int qeth_cq_init(struct qeth_card *card)
292 {
293 int rc;
294
295 if (card->options.cq == QETH_CQ_ENABLED) {
296 QETH_CARD_TEXT(card, 2, "cqinit");
297 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
298 QDIO_MAX_BUFFERS_PER_Q);
299 card->qdio.c_q->next_buf_to_init = 127;
300 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
301 card->qdio.no_in_queues - 1, 0,
302 127);
303 if (rc) {
304 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
305 goto out;
306 }
307 }
308 rc = 0;
309 out:
310 return rc;
311 }
312
313 static int qeth_alloc_cq(struct qeth_card *card)
314 {
315 int rc;
316
317 if (card->options.cq == QETH_CQ_ENABLED) {
318 int i;
319 struct qdio_outbuf_state *outbuf_states;
320
321 QETH_CARD_TEXT(card, 2, "cqon");
322 card->qdio.c_q = qeth_alloc_qdio_queue();
323 if (!card->qdio.c_q) {
324 rc = -1;
325 goto kmsg_out;
326 }
327 card->qdio.no_in_queues = 2;
328 card->qdio.out_bufstates =
329 kcalloc(card->qdio.no_out_queues *
330 QDIO_MAX_BUFFERS_PER_Q,
331 sizeof(struct qdio_outbuf_state),
332 GFP_KERNEL);
333 outbuf_states = card->qdio.out_bufstates;
334 if (outbuf_states == NULL) {
335 rc = -1;
336 goto free_cq_out;
337 }
338 for (i = 0; i < card->qdio.no_out_queues; ++i) {
339 card->qdio.out_qs[i]->bufstates = outbuf_states;
340 outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
341 }
342 } else {
343 QETH_CARD_TEXT(card, 2, "nocq");
344 card->qdio.c_q = NULL;
345 card->qdio.no_in_queues = 1;
346 }
347 QETH_CARD_TEXT_(card, 2, "iqc%d", card->qdio.no_in_queues);
348 rc = 0;
349 out:
350 return rc;
351 free_cq_out:
352 qeth_free_qdio_queue(card->qdio.c_q);
353 card->qdio.c_q = NULL;
354 kmsg_out:
355 dev_err(&card->gdev->dev, "Failed to create completion queue\n");
356 goto out;
357 }
358
359 static void qeth_free_cq(struct qeth_card *card)
360 {
361 if (card->qdio.c_q) {
362 --card->qdio.no_in_queues;
363 qeth_free_qdio_queue(card->qdio.c_q);
364 card->qdio.c_q = NULL;
365 }
366 kfree(card->qdio.out_bufstates);
367 card->qdio.out_bufstates = NULL;
368 }
369
370 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
371 int delayed)
372 {
373 enum iucv_tx_notify n;
374
375 switch (sbalf15) {
376 case 0:
377 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
378 break;
379 case 4:
380 case 16:
381 case 17:
382 case 18:
383 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
384 TX_NOTIFY_UNREACHABLE;
385 break;
386 default:
387 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
388 TX_NOTIFY_GENERALERROR;
389 break;
390 }
391
392 return n;
393 }
394
395 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
396 int forced_cleanup)
397 {
398 if (q->card->options.cq != QETH_CQ_ENABLED)
399 return;
400
401 if (q->bufs[bidx]->next_pending != NULL) {
402 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
403 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
404
405 while (c) {
406 if (forced_cleanup ||
407 atomic_read(&c->state) ==
408 QETH_QDIO_BUF_HANDLED_DELAYED) {
409 struct qeth_qdio_out_buffer *f = c;
410 QETH_CARD_TEXT(f->q->card, 5, "fp");
411 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
412
413
414
415 qeth_tx_complete_buf(c, forced_cleanup, 0);
416
417 c = f->next_pending;
418 WARN_ON_ONCE(head->next_pending != f);
419 head->next_pending = c;
420 kmem_cache_free(qeth_qdio_outbuf_cache, f);
421 } else {
422 head = c;
423 c = c->next_pending;
424 }
425
426 }
427 }
428 if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
429 QETH_QDIO_BUF_HANDLED_DELAYED)) {
430
431 qeth_init_qdio_out_buf(q, bidx);
432 QETH_CARD_TEXT(q->card, 2, "clprecov");
433 }
434 }
435
436
437 static void qeth_qdio_handle_aob(struct qeth_card *card,
438 unsigned long phys_aob_addr)
439 {
440 struct qaob *aob;
441 struct qeth_qdio_out_buffer *buffer;
442 enum iucv_tx_notify notification;
443 unsigned int i;
444
445 aob = (struct qaob *) phys_to_virt(phys_aob_addr);
446 QETH_CARD_TEXT(card, 5, "haob");
447 QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
448 buffer = (struct qeth_qdio_out_buffer *) aob->user1;
449 QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
450
451 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
452 QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
453 notification = TX_NOTIFY_OK;
454 } else {
455 WARN_ON_ONCE(atomic_read(&buffer->state) !=
456 QETH_QDIO_BUF_PENDING);
457 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
458 notification = TX_NOTIFY_DELAYED_OK;
459 }
460
461 if (aob->aorc != 0) {
462 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
463 notification = qeth_compute_cq_notification(aob->aorc, 1);
464 }
465 qeth_notify_skbs(buffer->q, buffer, notification);
466
467
468
469
470 for (i = 0;
471 i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card);
472 i++) {
473 if (aob->sba[i] && buffer->is_header[i])
474 kmem_cache_free(qeth_core_header_cache,
475 (void *) aob->sba[i]);
476 }
477 atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED);
478
479 qdio_release_aob(aob);
480 }
481
482 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
483 {
484 return card->options.cq == QETH_CQ_ENABLED &&
485 card->qdio.c_q != NULL &&
486 queue != 0 &&
487 queue == card->qdio.no_in_queues - 1;
488 }
489
490 static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u8 flags, u32 len,
491 void *data)
492 {
493 ccw->cmd_code = cmd_code;
494 ccw->flags = flags | CCW_FLAG_SLI;
495 ccw->count = len;
496 ccw->cda = (__u32) __pa(data);
497 }
498
499 static int __qeth_issue_next_read(struct qeth_card *card)
500 {
501 struct qeth_cmd_buffer *iob = card->read_cmd;
502 struct qeth_channel *channel = iob->channel;
503 struct ccw1 *ccw = __ccw_from_cmd(iob);
504 int rc;
505
506 QETH_CARD_TEXT(card, 5, "issnxrd");
507 if (channel->state != CH_STATE_UP)
508 return -EIO;
509
510 memset(iob->data, 0, iob->length);
511 qeth_setup_ccw(ccw, CCW_CMD_READ, 0, iob->length, iob->data);
512 iob->callback = qeth_issue_next_read_cb;
513
514 qeth_get_cmd(iob);
515
516 QETH_CARD_TEXT(card, 6, "noirqpnd");
517 rc = ccw_device_start(channel->ccwdev, ccw, (addr_t) iob, 0, 0);
518 if (!rc) {
519 channel->active_cmd = iob;
520 } else {
521 QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n",
522 rc, CARD_DEVID(card));
523 atomic_set(&channel->irq_pending, 0);
524 qeth_put_cmd(iob);
525 card->read_or_write_problem = 1;
526 qeth_schedule_recovery(card);
527 wake_up(&card->wait_q);
528 }
529 return rc;
530 }
531
532 static int qeth_issue_next_read(struct qeth_card *card)
533 {
534 int ret;
535
536 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
537 ret = __qeth_issue_next_read(card);
538 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
539
540 return ret;
541 }
542
543 static void qeth_enqueue_cmd(struct qeth_card *card,
544 struct qeth_cmd_buffer *iob)
545 {
546 spin_lock_irq(&card->lock);
547 list_add_tail(&iob->list, &card->cmd_waiter_list);
548 spin_unlock_irq(&card->lock);
549 }
550
551 static void qeth_dequeue_cmd(struct qeth_card *card,
552 struct qeth_cmd_buffer *iob)
553 {
554 spin_lock_irq(&card->lock);
555 list_del(&iob->list);
556 spin_unlock_irq(&card->lock);
557 }
558
559 void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
560 {
561 iob->rc = reason;
562 complete(&iob->done);
563 }
564 EXPORT_SYMBOL_GPL(qeth_notify_cmd);
565
566 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
567 struct qeth_card *card)
568 {
569 const char *ipa_name;
570 int com = cmd->hdr.command;
571 ipa_name = qeth_get_ipa_cmd_name(com);
572
573 if (rc)
574 QETH_DBF_MESSAGE(2, "IPA: %s(%#x) for device %x returned %#x \"%s\"\n",
575 ipa_name, com, CARD_DEVID(card), rc,
576 qeth_get_ipa_msg(rc));
577 else
578 QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n",
579 ipa_name, com, CARD_DEVID(card));
580 }
581
582 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
583 struct qeth_ipa_cmd *cmd)
584 {
585 QETH_CARD_TEXT(card, 5, "chkipad");
586
587 if (IS_IPA_REPLY(cmd)) {
588 if (cmd->hdr.command != IPA_CMD_SETCCID &&
589 cmd->hdr.command != IPA_CMD_DELCCID &&
590 cmd->hdr.command != IPA_CMD_MODCCID &&
591 cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
592 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
593 return cmd;
594 }
595
596
597 switch (cmd->hdr.command) {
598 case IPA_CMD_STOPLAN:
599 if (cmd->hdr.return_code == IPA_RC_VEPA_TO_VEB_TRANSITION) {
600 dev_err(&card->gdev->dev,
601 "Interface %s is down because the adjacent port is no longer in reflective relay mode\n",
602 QETH_CARD_IFNAME(card));
603 schedule_work(&card->close_dev_work);
604 } else {
605 dev_warn(&card->gdev->dev,
606 "The link for interface %s on CHPID 0x%X failed\n",
607 QETH_CARD_IFNAME(card), card->info.chpid);
608 qeth_issue_ipa_msg(cmd, cmd->hdr.return_code, card);
609 netif_carrier_off(card->dev);
610 }
611 return NULL;
612 case IPA_CMD_STARTLAN:
613 dev_info(&card->gdev->dev,
614 "The link for %s on CHPID 0x%X has been restored\n",
615 QETH_CARD_IFNAME(card), card->info.chpid);
616 if (card->info.hwtrap)
617 card->info.hwtrap = 2;
618 qeth_schedule_recovery(card);
619 return NULL;
620 case IPA_CMD_SETBRIDGEPORT_IQD:
621 case IPA_CMD_SETBRIDGEPORT_OSA:
622 case IPA_CMD_ADDRESS_CHANGE_NOTIF:
623 if (card->discipline->control_event_handler(card, cmd))
624 return cmd;
625 return NULL;
626 case IPA_CMD_MODCCID:
627 return cmd;
628 case IPA_CMD_REGISTER_LOCAL_ADDR:
629 QETH_CARD_TEXT(card, 3, "irla");
630 return NULL;
631 case IPA_CMD_UNREGISTER_LOCAL_ADDR:
632 QETH_CARD_TEXT(card, 3, "urla");
633 return NULL;
634 default:
635 QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n");
636 return cmd;
637 }
638 }
639
640 void qeth_clear_ipacmd_list(struct qeth_card *card)
641 {
642 struct qeth_cmd_buffer *iob;
643 unsigned long flags;
644
645 QETH_CARD_TEXT(card, 4, "clipalst");
646
647 spin_lock_irqsave(&card->lock, flags);
648 list_for_each_entry(iob, &card->cmd_waiter_list, list)
649 qeth_notify_cmd(iob, -EIO);
650 spin_unlock_irqrestore(&card->lock, flags);
651 }
652 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
653
654 static int qeth_check_idx_response(struct qeth_card *card,
655 unsigned char *buffer)
656 {
657 QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
658 if ((buffer[2] & QETH_IDX_TERMINATE_MASK) == QETH_IDX_TERMINATE) {
659 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#04x\n",
660 buffer[4]);
661 QETH_CARD_TEXT(card, 2, "ckidxres");
662 QETH_CARD_TEXT(card, 2, " idxterm");
663 QETH_CARD_TEXT_(card, 2, "rc%x", buffer[4]);
664 if (buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT ||
665 buffer[4] == QETH_IDX_TERM_BAD_TRANSPORT_VM) {
666 dev_err(&card->gdev->dev,
667 "The device does not support the configured transport mode\n");
668 return -EPROTONOSUPPORT;
669 }
670 return -EIO;
671 }
672 return 0;
673 }
674
675 void qeth_put_cmd(struct qeth_cmd_buffer *iob)
676 {
677 if (refcount_dec_and_test(&iob->ref_count)) {
678 kfree(iob->data);
679 kfree(iob);
680 }
681 }
682 EXPORT_SYMBOL_GPL(qeth_put_cmd);
683
684 static void qeth_release_buffer_cb(struct qeth_card *card,
685 struct qeth_cmd_buffer *iob,
686 unsigned int data_length)
687 {
688 qeth_put_cmd(iob);
689 }
690
691 static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
692 {
693 qeth_notify_cmd(iob, rc);
694 qeth_put_cmd(iob);
695 }
696
697 struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
698 unsigned int length, unsigned int ccws,
699 long timeout)
700 {
701 struct qeth_cmd_buffer *iob;
702
703 if (length > QETH_BUFSIZE)
704 return NULL;
705
706 iob = kzalloc(sizeof(*iob), GFP_KERNEL);
707 if (!iob)
708 return NULL;
709
710 iob->data = kzalloc(ALIGN(length, 8) + ccws * sizeof(struct ccw1),
711 GFP_KERNEL | GFP_DMA);
712 if (!iob->data) {
713 kfree(iob);
714 return NULL;
715 }
716
717 init_completion(&iob->done);
718 spin_lock_init(&iob->lock);
719 INIT_LIST_HEAD(&iob->list);
720 refcount_set(&iob->ref_count, 1);
721 iob->channel = channel;
722 iob->timeout = timeout;
723 iob->length = length;
724 return iob;
725 }
726 EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
727
728 static void qeth_issue_next_read_cb(struct qeth_card *card,
729 struct qeth_cmd_buffer *iob,
730 unsigned int data_length)
731 {
732 struct qeth_cmd_buffer *request = NULL;
733 struct qeth_ipa_cmd *cmd = NULL;
734 struct qeth_reply *reply = NULL;
735 struct qeth_cmd_buffer *tmp;
736 unsigned long flags;
737 int rc = 0;
738
739 QETH_CARD_TEXT(card, 4, "sndctlcb");
740 rc = qeth_check_idx_response(card, iob->data);
741 switch (rc) {
742 case 0:
743 break;
744 case -EIO:
745 qeth_schedule_recovery(card);
746
747 default:
748 qeth_clear_ipacmd_list(card);
749 goto out;
750 }
751
752 if (IS_IPA(iob->data)) {
753 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
754 cmd = qeth_check_ipa_data(card, cmd);
755 if (!cmd)
756 goto out;
757 if (IS_OSN(card) && card->osn_info.assist_cb &&
758 cmd->hdr.command != IPA_CMD_STARTLAN) {
759 card->osn_info.assist_cb(card->dev, cmd);
760 goto out;
761 }
762 } else {
763
764 if (card->state != CARD_STATE_DOWN)
765 goto out;
766 }
767
768
769 spin_lock_irqsave(&card->lock, flags);
770 list_for_each_entry(tmp, &card->cmd_waiter_list, list) {
771 if (!IS_IPA(tmp->data) ||
772 __ipa_cmd(tmp)->hdr.seqno == cmd->hdr.seqno) {
773 request = tmp;
774
775 qeth_get_cmd(request);
776 break;
777 }
778 }
779 spin_unlock_irqrestore(&card->lock, flags);
780
781 if (!request)
782 goto out;
783
784 reply = &request->reply;
785 if (!reply->callback) {
786 rc = 0;
787 goto no_callback;
788 }
789
790 spin_lock_irqsave(&request->lock, flags);
791 if (request->rc)
792
793 rc = request->rc;
794 else
795 rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
796 (unsigned long)iob);
797 spin_unlock_irqrestore(&request->lock, flags);
798
799 no_callback:
800 if (rc <= 0)
801 qeth_notify_cmd(request, rc);
802 qeth_put_cmd(request);
803 out:
804 memcpy(&card->seqno.pdu_hdr_ack,
805 QETH_PDU_HEADER_SEQ_NO(iob->data),
806 QETH_SEQ_NO_LENGTH);
807 qeth_put_cmd(iob);
808 __qeth_issue_next_read(card);
809 }
810
811 static int qeth_set_thread_start_bit(struct qeth_card *card,
812 unsigned long thread)
813 {
814 unsigned long flags;
815
816 spin_lock_irqsave(&card->thread_mask_lock, flags);
817 if (!(card->thread_allowed_mask & thread) ||
818 (card->thread_start_mask & thread)) {
819 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
820 return -EPERM;
821 }
822 card->thread_start_mask |= thread;
823 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
824 return 0;
825 }
826
827 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
828 {
829 unsigned long flags;
830
831 spin_lock_irqsave(&card->thread_mask_lock, flags);
832 card->thread_start_mask &= ~thread;
833 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
834 wake_up(&card->wait_q);
835 }
836 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
837
838 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
839 {
840 unsigned long flags;
841
842 spin_lock_irqsave(&card->thread_mask_lock, flags);
843 card->thread_running_mask &= ~thread;
844 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
845 wake_up_all(&card->wait_q);
846 }
847 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
848
849 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
850 {
851 unsigned long flags;
852 int rc = 0;
853
854 spin_lock_irqsave(&card->thread_mask_lock, flags);
855 if (card->thread_start_mask & thread) {
856 if ((card->thread_allowed_mask & thread) &&
857 !(card->thread_running_mask & thread)) {
858 rc = 1;
859 card->thread_start_mask &= ~thread;
860 card->thread_running_mask |= thread;
861 } else
862 rc = -EPERM;
863 }
864 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
865 return rc;
866 }
867
868 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
869 {
870 int rc = 0;
871
872 wait_event(card->wait_q,
873 (rc = __qeth_do_run_thread(card, thread)) >= 0);
874 return rc;
875 }
876 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
877
878 void qeth_schedule_recovery(struct qeth_card *card)
879 {
880 QETH_CARD_TEXT(card, 2, "startrec");
881 if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
882 schedule_work(&card->kernel_thread_starter);
883 }
884 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
885
886 static int qeth_get_problem(struct qeth_card *card, struct ccw_device *cdev,
887 struct irb *irb)
888 {
889 int dstat, cstat;
890 char *sense;
891
892 sense = (char *) irb->ecw;
893 cstat = irb->scsw.cmd.cstat;
894 dstat = irb->scsw.cmd.dstat;
895
896 if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
897 SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
898 SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
899 QETH_CARD_TEXT(card, 2, "CGENCHK");
900 dev_warn(&cdev->dev, "The qeth device driver "
901 "failed to recover an error on the device\n");
902 QETH_DBF_MESSAGE(2, "check on channel %x with dstat=%#x, cstat=%#x\n",
903 CCW_DEVID(cdev), dstat, cstat);
904 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
905 16, 1, irb, 64, 1);
906 return -EIO;
907 }
908
909 if (dstat & DEV_STAT_UNIT_CHECK) {
910 if (sense[SENSE_RESETTING_EVENT_BYTE] &
911 SENSE_RESETTING_EVENT_FLAG) {
912 QETH_CARD_TEXT(card, 2, "REVIND");
913 return -EIO;
914 }
915 if (sense[SENSE_COMMAND_REJECT_BYTE] &
916 SENSE_COMMAND_REJECT_FLAG) {
917 QETH_CARD_TEXT(card, 2, "CMDREJi");
918 return -EIO;
919 }
920 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
921 QETH_CARD_TEXT(card, 2, "AFFE");
922 return -EIO;
923 }
924 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
925 QETH_CARD_TEXT(card, 2, "ZEROSEN");
926 return 0;
927 }
928 QETH_CARD_TEXT(card, 2, "DGENCHK");
929 return -EIO;
930 }
931 return 0;
932 }
933
934 static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
935 struct irb *irb)
936 {
937 if (!IS_ERR(irb))
938 return 0;
939
940 switch (PTR_ERR(irb)) {
941 case -EIO:
942 QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n",
943 CCW_DEVID(cdev));
944 QETH_CARD_TEXT(card, 2, "ckirberr");
945 QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
946 return -EIO;
947 case -ETIMEDOUT:
948 dev_warn(&cdev->dev, "A hardware operation timed out"
949 " on the device\n");
950 QETH_CARD_TEXT(card, 2, "ckirberr");
951 QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
952 return -ETIMEDOUT;
953 default:
954 QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n",
955 PTR_ERR(irb), CCW_DEVID(cdev));
956 QETH_CARD_TEXT(card, 2, "ckirberr");
957 QETH_CARD_TEXT(card, 2, " rc???");
958 return PTR_ERR(irb);
959 }
960 }
961
962 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
963 struct irb *irb)
964 {
965 int rc;
966 int cstat, dstat;
967 struct qeth_cmd_buffer *iob = NULL;
968 struct ccwgroup_device *gdev;
969 struct qeth_channel *channel;
970 struct qeth_card *card;
971
972
973 gdev = dev_get_drvdata(&cdev->dev);
974 card = dev_get_drvdata(&gdev->dev);
975 if (!card)
976 return;
977
978 QETH_CARD_TEXT(card, 5, "irq");
979
980 if (card->read.ccwdev == cdev) {
981 channel = &card->read;
982 QETH_CARD_TEXT(card, 5, "read");
983 } else if (card->write.ccwdev == cdev) {
984 channel = &card->write;
985 QETH_CARD_TEXT(card, 5, "write");
986 } else {
987 channel = &card->data;
988 QETH_CARD_TEXT(card, 5, "data");
989 }
990
991 if (intparm == 0) {
992 QETH_CARD_TEXT(card, 5, "irqunsol");
993 } else if ((addr_t)intparm != (addr_t)channel->active_cmd) {
994 QETH_CARD_TEXT(card, 5, "irqunexp");
995
996 dev_err(&cdev->dev,
997 "Received IRQ with intparm %lx, expected %px\n",
998 intparm, channel->active_cmd);
999 if (channel->active_cmd)
1000 qeth_cancel_cmd(channel->active_cmd, -EIO);
1001 } else {
1002 iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
1003 }
1004
1005 channel->active_cmd = NULL;
1006
1007 rc = qeth_check_irb_error(card, cdev, irb);
1008 if (rc) {
1009
1010 if (iob)
1011 qeth_cancel_cmd(iob, rc);
1012 atomic_set(&channel->irq_pending, 0);
1013 wake_up(&card->wait_q);
1014 return;
1015 }
1016
1017 atomic_set(&channel->irq_pending, 0);
1018
1019 if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1020 channel->state = CH_STATE_STOPPED;
1021
1022 if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1023 channel->state = CH_STATE_HALTED;
1024
1025 if (iob && (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC |
1026 SCSW_FCTL_HALT_FUNC))) {
1027 qeth_cancel_cmd(iob, -ECANCELED);
1028 iob = NULL;
1029 }
1030
1031 cstat = irb->scsw.cmd.cstat;
1032 dstat = irb->scsw.cmd.dstat;
1033
1034 if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1035 (dstat & DEV_STAT_UNIT_CHECK) ||
1036 (cstat)) {
1037 if (irb->esw.esw0.erw.cons) {
1038 dev_warn(&channel->ccwdev->dev,
1039 "The qeth device driver failed to recover "
1040 "an error on the device\n");
1041 QETH_DBF_MESSAGE(2, "sense data available on channel %x: cstat %#X dstat %#X\n",
1042 CCW_DEVID(channel->ccwdev), cstat,
1043 dstat);
1044 print_hex_dump(KERN_WARNING, "qeth: irb ",
1045 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1046 print_hex_dump(KERN_WARNING, "qeth: sense data ",
1047 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1048 }
1049
1050 rc = qeth_get_problem(card, cdev, irb);
1051 if (rc) {
1052 card->read_or_write_problem = 1;
1053 if (iob)
1054 qeth_cancel_cmd(iob, rc);
1055 qeth_clear_ipacmd_list(card);
1056 qeth_schedule_recovery(card);
1057 goto out;
1058 }
1059 }
1060
1061 if (iob) {
1062
1063 if (irb->scsw.cmd.count > iob->length) {
1064 qeth_cancel_cmd(iob, -EIO);
1065 goto out;
1066 }
1067 if (iob->callback)
1068 iob->callback(card, iob,
1069 iob->length - irb->scsw.cmd.count);
1070 }
1071
1072 out:
1073 wake_up(&card->wait_q);
1074 return;
1075 }
1076
1077 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1078 struct qeth_qdio_out_buffer *buf,
1079 enum iucv_tx_notify notification)
1080 {
1081 struct sk_buff *skb;
1082
1083 skb_queue_walk(&buf->skb_list, skb) {
1084 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1085 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1086 if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk)
1087 iucv_sk(skb->sk)->sk_txnotify(skb, notification);
1088 }
1089 }
1090
1091 static void qeth_tx_complete_buf(struct qeth_qdio_out_buffer *buf, bool error,
1092 int budget)
1093 {
1094 struct qeth_qdio_out_q *queue = buf->q;
1095 struct sk_buff *skb;
1096
1097
1098 WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1099
1100 if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1101 qeth_notify_skbs(queue, buf, TX_NOTIFY_GENERALERROR);
1102
1103
1104 if (buf->next_element_to_fill == 0)
1105 return;
1106
1107 QETH_TXQ_STAT_INC(queue, bufs);
1108 QETH_TXQ_STAT_ADD(queue, buf_elements, buf->next_element_to_fill);
1109 while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) {
1110 unsigned int bytes = qdisc_pkt_len(skb);
1111 bool is_tso = skb_is_gso(skb);
1112 unsigned int packets;
1113
1114 packets = is_tso ? skb_shinfo(skb)->gso_segs : 1;
1115 if (error) {
1116 QETH_TXQ_STAT_ADD(queue, tx_errors, packets);
1117 } else {
1118 QETH_TXQ_STAT_ADD(queue, tx_packets, packets);
1119 QETH_TXQ_STAT_ADD(queue, tx_bytes, bytes);
1120 if (skb->ip_summed == CHECKSUM_PARTIAL)
1121 QETH_TXQ_STAT_ADD(queue, skbs_csum, packets);
1122 if (skb_is_nonlinear(skb))
1123 QETH_TXQ_STAT_INC(queue, skbs_sg);
1124 if (is_tso) {
1125 QETH_TXQ_STAT_INC(queue, skbs_tso);
1126 QETH_TXQ_STAT_ADD(queue, tso_bytes, bytes);
1127 }
1128 }
1129
1130 napi_consume_skb(skb, budget);
1131 }
1132 }
1133
1134 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1135 struct qeth_qdio_out_buffer *buf,
1136 bool error, int budget)
1137 {
1138 int i;
1139
1140
1141 if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1142 atomic_dec(&queue->set_pci_flags_count);
1143
1144 qeth_tx_complete_buf(buf, error, budget);
1145
1146 for (i = 0; i < queue->max_elements; ++i) {
1147 if (buf->buffer->element[i].addr && buf->is_header[i])
1148 kmem_cache_free(qeth_core_header_cache,
1149 buf->buffer->element[i].addr);
1150 buf->is_header[i] = 0;
1151 }
1152
1153 qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements);
1154 buf->next_element_to_fill = 0;
1155 buf->bytes = 0;
1156 atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
1157 }
1158
1159 static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool free)
1160 {
1161 int j;
1162
1163 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1164 if (!q->bufs[j])
1165 continue;
1166 qeth_cleanup_handled_pending(q, j, 1);
1167 qeth_clear_output_buffer(q, q->bufs[j], true, 0);
1168 if (free) {
1169 kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1170 q->bufs[j] = NULL;
1171 }
1172 }
1173 }
1174
1175 void qeth_drain_output_queues(struct qeth_card *card)
1176 {
1177 int i;
1178
1179 QETH_CARD_TEXT(card, 2, "clearqdbf");
1180
1181 for (i = 0; i < card->qdio.no_out_queues; ++i) {
1182 if (card->qdio.out_qs[i])
1183 qeth_drain_output_queue(card->qdio.out_qs[i], false);
1184 }
1185 }
1186 EXPORT_SYMBOL_GPL(qeth_drain_output_queues);
1187
1188 static void qeth_free_buffer_pool(struct qeth_card *card)
1189 {
1190 struct qeth_buffer_pool_entry *pool_entry, *tmp;
1191 int i = 0;
1192 list_for_each_entry_safe(pool_entry, tmp,
1193 &card->qdio.init_pool.entry_list, init_list){
1194 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1195 free_page((unsigned long)pool_entry->elements[i]);
1196 list_del(&pool_entry->init_list);
1197 kfree(pool_entry);
1198 }
1199 }
1200
1201 static void qeth_clean_channel(struct qeth_channel *channel)
1202 {
1203 struct ccw_device *cdev = channel->ccwdev;
1204
1205 QETH_DBF_TEXT(SETUP, 2, "freech");
1206
1207 spin_lock_irq(get_ccwdev_lock(cdev));
1208 cdev->handler = NULL;
1209 spin_unlock_irq(get_ccwdev_lock(cdev));
1210 }
1211
1212 static void qeth_setup_channel(struct qeth_channel *channel)
1213 {
1214 struct ccw_device *cdev = channel->ccwdev;
1215
1216 QETH_DBF_TEXT(SETUP, 2, "setupch");
1217
1218 channel->state = CH_STATE_DOWN;
1219 atomic_set(&channel->irq_pending, 0);
1220
1221 spin_lock_irq(get_ccwdev_lock(cdev));
1222 cdev->handler = qeth_irq;
1223 spin_unlock_irq(get_ccwdev_lock(cdev));
1224 }
1225
1226 static int qeth_osa_set_output_queues(struct qeth_card *card, bool single)
1227 {
1228 unsigned int count = single ? 1 : card->dev->num_tx_queues;
1229 int rc;
1230
1231 rtnl_lock();
1232 rc = netif_set_real_num_tx_queues(card->dev, count);
1233 rtnl_unlock();
1234
1235 if (rc)
1236 return rc;
1237
1238 if (card->qdio.no_out_queues == count)
1239 return 0;
1240
1241 if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED)
1242 qeth_free_qdio_queues(card);
1243
1244 if (count == 1)
1245 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1246
1247 card->qdio.no_out_queues = count;
1248 return 0;
1249 }
1250
1251 static int qeth_update_from_chp_desc(struct qeth_card *card)
1252 {
1253 struct ccw_device *ccwdev;
1254 struct channel_path_desc_fmt0 *chp_dsc;
1255 int rc = 0;
1256
1257 QETH_CARD_TEXT(card, 2, "chp_desc");
1258
1259 ccwdev = card->data.ccwdev;
1260 chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1261 if (!chp_dsc)
1262 return -ENOMEM;
1263
1264 card->info.func_level = 0x4100 + chp_dsc->desc;
1265
1266 if (IS_OSD(card) || IS_OSX(card))
1267
1268 rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02);
1269
1270 kfree(chp_dsc);
1271 QETH_CARD_TEXT_(card, 2, "nr:%x", card->qdio.no_out_queues);
1272 QETH_CARD_TEXT_(card, 2, "lvl:%02x", card->info.func_level);
1273 return rc;
1274 }
1275
1276 static void qeth_init_qdio_info(struct qeth_card *card)
1277 {
1278 QETH_CARD_TEXT(card, 4, "intqdinf");
1279 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1280 card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1281 card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1282
1283
1284 card->qdio.no_in_queues = 1;
1285 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1286 if (IS_IQD(card))
1287 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1288 else
1289 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1290 card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1291 INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1292 INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1293 }
1294
1295 static void qeth_set_initial_options(struct qeth_card *card)
1296 {
1297 card->options.route4.type = NO_ROUTER;
1298 card->options.route6.type = NO_ROUTER;
1299 card->options.rx_sg_cb = QETH_RX_SG_CB;
1300 card->options.isolation = ISOLATION_MODE_NONE;
1301 card->options.cq = QETH_CQ_DISABLED;
1302 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
1303 }
1304
1305 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1306 {
1307 unsigned long flags;
1308 int rc = 0;
1309
1310 spin_lock_irqsave(&card->thread_mask_lock, flags);
1311 QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
1312 (u8) card->thread_start_mask,
1313 (u8) card->thread_allowed_mask,
1314 (u8) card->thread_running_mask);
1315 rc = (card->thread_start_mask & thread);
1316 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1317 return rc;
1318 }
1319
1320 static void qeth_start_kernel_thread(struct work_struct *work)
1321 {
1322 struct task_struct *ts;
1323 struct qeth_card *card = container_of(work, struct qeth_card,
1324 kernel_thread_starter);
1325 QETH_CARD_TEXT(card , 2, "strthrd");
1326
1327 if (card->read.state != CH_STATE_UP &&
1328 card->write.state != CH_STATE_UP)
1329 return;
1330 if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1331 ts = kthread_run(card->discipline->recover, (void *)card,
1332 "qeth_recover");
1333 if (IS_ERR(ts)) {
1334 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1335 qeth_clear_thread_running_bit(card,
1336 QETH_RECOVER_THREAD);
1337 }
1338 }
1339 }
1340
1341 static void qeth_buffer_reclaim_work(struct work_struct *);
1342 static void qeth_setup_card(struct qeth_card *card)
1343 {
1344 QETH_CARD_TEXT(card, 2, "setupcrd");
1345
1346 card->info.type = CARD_RDEV(card)->id.driver_info;
1347 card->state = CARD_STATE_DOWN;
1348 spin_lock_init(&card->lock);
1349 spin_lock_init(&card->thread_mask_lock);
1350 mutex_init(&card->conf_mutex);
1351 mutex_init(&card->discipline_mutex);
1352 INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1353 INIT_LIST_HEAD(&card->cmd_waiter_list);
1354 init_waitqueue_head(&card->wait_q);
1355 qeth_set_initial_options(card);
1356
1357 INIT_LIST_HEAD(&card->ipato.entries);
1358 qeth_init_qdio_info(card);
1359 INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1360 INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1361 }
1362
1363 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1364 {
1365 struct qeth_card *card = container_of(slr, struct qeth_card,
1366 qeth_service_level);
1367 if (card->info.mcl_level[0])
1368 seq_printf(m, "qeth: %s firmware level %s\n",
1369 CARD_BUS_ID(card), card->info.mcl_level);
1370 }
1371
1372 static struct qeth_card *qeth_alloc_card(struct ccwgroup_device *gdev)
1373 {
1374 struct qeth_card *card;
1375
1376 QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1377 card = kzalloc(sizeof(*card), GFP_KERNEL);
1378 if (!card)
1379 goto out;
1380 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1381
1382 card->gdev = gdev;
1383 dev_set_drvdata(&gdev->dev, card);
1384 CARD_RDEV(card) = gdev->cdev[0];
1385 CARD_WDEV(card) = gdev->cdev[1];
1386 CARD_DDEV(card) = gdev->cdev[2];
1387
1388 card->event_wq = alloc_ordered_workqueue("%s_event", 0,
1389 dev_name(&gdev->dev));
1390 if (!card->event_wq)
1391 goto out_wq;
1392
1393 card->read_cmd = qeth_alloc_cmd(&card->read, QETH_BUFSIZE, 1, 0);
1394 if (!card->read_cmd)
1395 goto out_read_cmd;
1396
1397 qeth_setup_channel(&card->read);
1398 qeth_setup_channel(&card->write);
1399 qeth_setup_channel(&card->data);
1400 card->qeth_service_level.seq_print = qeth_core_sl_print;
1401 register_service_level(&card->qeth_service_level);
1402 return card;
1403
1404 out_read_cmd:
1405 destroy_workqueue(card->event_wq);
1406 out_wq:
1407 dev_set_drvdata(&gdev->dev, NULL);
1408 kfree(card);
1409 out:
1410 return NULL;
1411 }
1412
1413 static int qeth_clear_channel(struct qeth_card *card,
1414 struct qeth_channel *channel)
1415 {
1416 int rc;
1417
1418 QETH_CARD_TEXT(card, 3, "clearch");
1419 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1420 rc = ccw_device_clear(channel->ccwdev, (addr_t)channel->active_cmd);
1421 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1422
1423 if (rc)
1424 return rc;
1425 rc = wait_event_interruptible_timeout(card->wait_q,
1426 channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1427 if (rc == -ERESTARTSYS)
1428 return rc;
1429 if (channel->state != CH_STATE_STOPPED)
1430 return -ETIME;
1431 channel->state = CH_STATE_DOWN;
1432 return 0;
1433 }
1434
1435 static int qeth_halt_channel(struct qeth_card *card,
1436 struct qeth_channel *channel)
1437 {
1438 int rc;
1439
1440 QETH_CARD_TEXT(card, 3, "haltch");
1441 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1442 rc = ccw_device_halt(channel->ccwdev, (addr_t)channel->active_cmd);
1443 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1444
1445 if (rc)
1446 return rc;
1447 rc = wait_event_interruptible_timeout(card->wait_q,
1448 channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1449 if (rc == -ERESTARTSYS)
1450 return rc;
1451 if (channel->state != CH_STATE_HALTED)
1452 return -ETIME;
1453 return 0;
1454 }
1455
1456 int qeth_stop_channel(struct qeth_channel *channel)
1457 {
1458 struct ccw_device *cdev = channel->ccwdev;
1459 int rc;
1460
1461 rc = ccw_device_set_offline(cdev);
1462
1463 spin_lock_irq(get_ccwdev_lock(cdev));
1464 if (channel->active_cmd) {
1465 dev_err(&cdev->dev, "Stopped channel while cmd %px was still active\n",
1466 channel->active_cmd);
1467 channel->active_cmd = NULL;
1468 }
1469 spin_unlock_irq(get_ccwdev_lock(cdev));
1470
1471 return rc;
1472 }
1473 EXPORT_SYMBOL_GPL(qeth_stop_channel);
1474
1475 static int qeth_halt_channels(struct qeth_card *card)
1476 {
1477 int rc1 = 0, rc2 = 0, rc3 = 0;
1478
1479 QETH_CARD_TEXT(card, 3, "haltchs");
1480 rc1 = qeth_halt_channel(card, &card->read);
1481 rc2 = qeth_halt_channel(card, &card->write);
1482 rc3 = qeth_halt_channel(card, &card->data);
1483 if (rc1)
1484 return rc1;
1485 if (rc2)
1486 return rc2;
1487 return rc3;
1488 }
1489
1490 static int qeth_clear_channels(struct qeth_card *card)
1491 {
1492 int rc1 = 0, rc2 = 0, rc3 = 0;
1493
1494 QETH_CARD_TEXT(card, 3, "clearchs");
1495 rc1 = qeth_clear_channel(card, &card->read);
1496 rc2 = qeth_clear_channel(card, &card->write);
1497 rc3 = qeth_clear_channel(card, &card->data);
1498 if (rc1)
1499 return rc1;
1500 if (rc2)
1501 return rc2;
1502 return rc3;
1503 }
1504
1505 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1506 {
1507 int rc = 0;
1508
1509 QETH_CARD_TEXT(card, 3, "clhacrd");
1510
1511 if (halt)
1512 rc = qeth_halt_channels(card);
1513 if (rc)
1514 return rc;
1515 return qeth_clear_channels(card);
1516 }
1517
1518 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1519 {
1520 int rc = 0;
1521
1522 QETH_CARD_TEXT(card, 3, "qdioclr");
1523 switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1524 QETH_QDIO_CLEANING)) {
1525 case QETH_QDIO_ESTABLISHED:
1526 if (IS_IQD(card))
1527 rc = qdio_shutdown(CARD_DDEV(card),
1528 QDIO_FLAG_CLEANUP_USING_HALT);
1529 else
1530 rc = qdio_shutdown(CARD_DDEV(card),
1531 QDIO_FLAG_CLEANUP_USING_CLEAR);
1532 if (rc)
1533 QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1534 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1535 break;
1536 case QETH_QDIO_CLEANING:
1537 return rc;
1538 default:
1539 break;
1540 }
1541 rc = qeth_clear_halt_card(card, use_halt);
1542 if (rc)
1543 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1544 card->state = CARD_STATE_DOWN;
1545 return rc;
1546 }
1547 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1548
1549 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1550 {
1551 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1552 struct diag26c_vnic_resp *response = NULL;
1553 struct diag26c_vnic_req *request = NULL;
1554 struct ccw_dev_id id;
1555 char userid[80];
1556 int rc = 0;
1557
1558 QETH_CARD_TEXT(card, 2, "vmlayer");
1559
1560 cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1561 if (rc)
1562 goto out;
1563
1564 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1565 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1566 if (!request || !response) {
1567 rc = -ENOMEM;
1568 goto out;
1569 }
1570
1571 ccw_device_get_id(CARD_RDEV(card), &id);
1572 request->resp_buf_len = sizeof(*response);
1573 request->resp_version = DIAG26C_VERSION6_VM65918;
1574 request->req_format = DIAG26C_VNIC_INFO;
1575 ASCEBC(userid, 8);
1576 memcpy(&request->sys_name, userid, 8);
1577 request->devno = id.devno;
1578
1579 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1580 rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1581 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1582 if (rc)
1583 goto out;
1584 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1585
1586 if (request->resp_buf_len < sizeof(*response) ||
1587 response->version != request->resp_version) {
1588 rc = -EIO;
1589 goto out;
1590 }
1591
1592 if (response->protocol == VNIC_INFO_PROT_L2)
1593 disc = QETH_DISCIPLINE_LAYER2;
1594 else if (response->protocol == VNIC_INFO_PROT_L3)
1595 disc = QETH_DISCIPLINE_LAYER3;
1596
1597 out:
1598 kfree(response);
1599 kfree(request);
1600 if (rc)
1601 QETH_CARD_TEXT_(card, 2, "err%x", rc);
1602 return disc;
1603 }
1604
1605
1606 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1607 {
1608 enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1609
1610 if (IS_OSM(card) || IS_OSN(card))
1611 disc = QETH_DISCIPLINE_LAYER2;
1612 else if (IS_VM_NIC(card))
1613 disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
1614 qeth_vm_detect_layer(card);
1615
1616 switch (disc) {
1617 case QETH_DISCIPLINE_LAYER2:
1618 QETH_CARD_TEXT(card, 3, "force l2");
1619 break;
1620 case QETH_DISCIPLINE_LAYER3:
1621 QETH_CARD_TEXT(card, 3, "force l3");
1622 break;
1623 default:
1624 QETH_CARD_TEXT(card, 3, "force no");
1625 }
1626
1627 return disc;
1628 }
1629
1630 static void qeth_set_blkt_defaults(struct qeth_card *card)
1631 {
1632 QETH_CARD_TEXT(card, 2, "cfgblkt");
1633
1634 if (card->info.use_v1_blkt) {
1635 card->info.blkt.time_total = 0;
1636 card->info.blkt.inter_packet = 0;
1637 card->info.blkt.inter_packet_jumbo = 0;
1638 } else {
1639 card->info.blkt.time_total = 250;
1640 card->info.blkt.inter_packet = 5;
1641 card->info.blkt.inter_packet_jumbo = 15;
1642 }
1643 }
1644
1645 static void qeth_init_tokens(struct qeth_card *card)
1646 {
1647 card->token.issuer_rm_w = 0x00010103UL;
1648 card->token.cm_filter_w = 0x00010108UL;
1649 card->token.cm_connection_w = 0x0001010aUL;
1650 card->token.ulp_filter_w = 0x0001010bUL;
1651 card->token.ulp_connection_w = 0x0001010dUL;
1652 }
1653
1654 static void qeth_init_func_level(struct qeth_card *card)
1655 {
1656 switch (card->info.type) {
1657 case QETH_CARD_TYPE_IQD:
1658 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1659 break;
1660 case QETH_CARD_TYPE_OSD:
1661 case QETH_CARD_TYPE_OSN:
1662 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1663 break;
1664 default:
1665 break;
1666 }
1667 }
1668
1669 static void qeth_idx_finalize_cmd(struct qeth_card *card,
1670 struct qeth_cmd_buffer *iob)
1671 {
1672 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr,
1673 QETH_SEQ_NO_LENGTH);
1674 if (iob->channel == &card->write)
1675 card->seqno.trans_hdr++;
1676 }
1677
1678 static int qeth_peer_func_level(int level)
1679 {
1680 if ((level & 0xff) == 8)
1681 return (level & 0xff) + 0x400;
1682 if (((level >> 8) & 3) == 1)
1683 return (level & 0xff) + 0x200;
1684 return level;
1685 }
1686
1687 static void qeth_mpc_finalize_cmd(struct qeth_card *card,
1688 struct qeth_cmd_buffer *iob)
1689 {
1690 qeth_idx_finalize_cmd(card, iob);
1691
1692 memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
1693 &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
1694 card->seqno.pdu_hdr++;
1695 memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
1696 &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1697
1698 iob->callback = qeth_release_buffer_cb;
1699 }
1700
1701 static struct qeth_cmd_buffer *qeth_mpc_alloc_cmd(struct qeth_card *card,
1702 void *data,
1703 unsigned int data_length)
1704 {
1705 struct qeth_cmd_buffer *iob;
1706
1707 iob = qeth_alloc_cmd(&card->write, data_length, 1, QETH_TIMEOUT);
1708 if (!iob)
1709 return NULL;
1710
1711 memcpy(iob->data, data, data_length);
1712 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, data_length,
1713 iob->data);
1714 iob->finalize = qeth_mpc_finalize_cmd;
1715 return iob;
1716 }
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740 static int qeth_send_control_data(struct qeth_card *card,
1741 struct qeth_cmd_buffer *iob,
1742 int (*reply_cb)(struct qeth_card *cb_card,
1743 struct qeth_reply *cb_reply,
1744 unsigned long cb_cmd),
1745 void *reply_param)
1746 {
1747 struct qeth_channel *channel = iob->channel;
1748 struct qeth_reply *reply = &iob->reply;
1749 long timeout = iob->timeout;
1750 int rc;
1751
1752 QETH_CARD_TEXT(card, 2, "sendctl");
1753
1754 reply->callback = reply_cb;
1755 reply->param = reply_param;
1756
1757 timeout = wait_event_interruptible_timeout(card->wait_q,
1758 qeth_trylock_channel(channel),
1759 timeout);
1760 if (timeout <= 0) {
1761 qeth_put_cmd(iob);
1762 return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1763 }
1764
1765 if (iob->finalize)
1766 iob->finalize(card, iob);
1767 QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
1768
1769 qeth_enqueue_cmd(card, iob);
1770
1771
1772 qeth_get_cmd(iob);
1773
1774 QETH_CARD_TEXT(card, 6, "noirqpnd");
1775 spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1776 rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
1777 (addr_t) iob, 0, 0, timeout);
1778 if (!rc)
1779 channel->active_cmd = iob;
1780 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1781 if (rc) {
1782 QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
1783 CARD_DEVID(card), rc);
1784 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1785 qeth_dequeue_cmd(card, iob);
1786 qeth_put_cmd(iob);
1787 atomic_set(&channel->irq_pending, 0);
1788 wake_up(&card->wait_q);
1789 goto out;
1790 }
1791
1792 timeout = wait_for_completion_interruptible_timeout(&iob->done,
1793 timeout);
1794 if (timeout <= 0)
1795 rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
1796
1797 qeth_dequeue_cmd(card, iob);
1798
1799 if (reply_cb) {
1800
1801 spin_lock_irq(&iob->lock);
1802 if (rc)
1803
1804 iob->rc = rc;
1805 spin_unlock_irq(&iob->lock);
1806 }
1807
1808 if (!rc)
1809 rc = iob->rc;
1810
1811 out:
1812 qeth_put_cmd(iob);
1813 return rc;
1814 }
1815
1816 struct qeth_node_desc {
1817 struct node_descriptor nd1;
1818 struct node_descriptor nd2;
1819 struct node_descriptor nd3;
1820 };
1821
1822 static void qeth_read_conf_data_cb(struct qeth_card *card,
1823 struct qeth_cmd_buffer *iob,
1824 unsigned int data_length)
1825 {
1826 struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
1827 int rc = 0;
1828 u8 *tag;
1829
1830 QETH_CARD_TEXT(card, 2, "cfgunit");
1831
1832 if (data_length < sizeof(*nd)) {
1833 rc = -EINVAL;
1834 goto out;
1835 }
1836
1837 card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
1838 nd->nd1.plant[1] == _ascebc['M'];
1839 tag = (u8 *)&nd->nd1.tag;
1840 card->info.chpid = tag[0];
1841 card->info.unit_addr2 = tag[1];
1842
1843 tag = (u8 *)&nd->nd2.tag;
1844 card->info.cula = tag[1];
1845
1846 card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
1847 nd->nd3.model[1] == 0xF0 &&
1848 nd->nd3.model[2] >= 0xF1 &&
1849 nd->nd3.model[2] <= 0xF4;
1850
1851 out:
1852 qeth_notify_cmd(iob, rc);
1853 qeth_put_cmd(iob);
1854 }
1855
1856 static int qeth_read_conf_data(struct qeth_card *card)
1857 {
1858 struct qeth_channel *channel = &card->data;
1859 struct qeth_cmd_buffer *iob;
1860 struct ciw *ciw;
1861
1862
1863 ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1864 if (!ciw || ciw->cmd == 0)
1865 return -EOPNOTSUPP;
1866 if (ciw->count < sizeof(struct qeth_node_desc))
1867 return -EINVAL;
1868
1869 iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
1870 if (!iob)
1871 return -ENOMEM;
1872
1873 iob->callback = qeth_read_conf_data_cb;
1874 qeth_setup_ccw(__ccw_from_cmd(iob), ciw->cmd, 0, iob->length,
1875 iob->data);
1876
1877 return qeth_send_control_data(card, iob, NULL, NULL);
1878 }
1879
1880 static int qeth_idx_check_activate_response(struct qeth_card *card,
1881 struct qeth_channel *channel,
1882 struct qeth_cmd_buffer *iob)
1883 {
1884 int rc;
1885
1886 rc = qeth_check_idx_response(card, iob->data);
1887 if (rc)
1888 return rc;
1889
1890 if (QETH_IS_IDX_ACT_POS_REPLY(iob->data))
1891 return 0;
1892
1893
1894 QETH_CARD_TEXT_(card, 2, "idxneg%c",
1895 QETH_IDX_ACT_CAUSE_CODE(iob->data));
1896
1897 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
1898 case QETH_IDX_ACT_ERR_EXCL:
1899 dev_err(&channel->ccwdev->dev,
1900 "The adapter is used exclusively by another host\n");
1901 return -EBUSY;
1902 case QETH_IDX_ACT_ERR_AUTH:
1903 case QETH_IDX_ACT_ERR_AUTH_USER:
1904 dev_err(&channel->ccwdev->dev,
1905 "Setting the device online failed because of insufficient authorization\n");
1906 return -EPERM;
1907 default:
1908 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n",
1909 CCW_DEVID(channel->ccwdev));
1910 return -EIO;
1911 }
1912 }
1913
1914 static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
1915 struct qeth_cmd_buffer *iob,
1916 unsigned int data_length)
1917 {
1918 struct qeth_channel *channel = iob->channel;
1919 u16 peer_level;
1920 int rc;
1921
1922 QETH_CARD_TEXT(card, 2, "idxrdcb");
1923
1924 rc = qeth_idx_check_activate_response(card, channel, iob);
1925 if (rc)
1926 goto out;
1927
1928 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1929 if (peer_level != qeth_peer_func_level(card->info.func_level)) {
1930 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1931 CCW_DEVID(channel->ccwdev),
1932 card->info.func_level, peer_level);
1933 rc = -EINVAL;
1934 goto out;
1935 }
1936
1937 memcpy(&card->token.issuer_rm_r,
1938 QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1939 QETH_MPC_TOKEN_LENGTH);
1940 memcpy(&card->info.mcl_level[0],
1941 QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
1942
1943 out:
1944 qeth_notify_cmd(iob, rc);
1945 qeth_put_cmd(iob);
1946 }
1947
1948 static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
1949 struct qeth_cmd_buffer *iob,
1950 unsigned int data_length)
1951 {
1952 struct qeth_channel *channel = iob->channel;
1953 u16 peer_level;
1954 int rc;
1955
1956 QETH_CARD_TEXT(card, 2, "idxwrcb");
1957
1958 rc = qeth_idx_check_activate_response(card, channel, iob);
1959 if (rc)
1960 goto out;
1961
1962 memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1963 if ((peer_level & ~0x0100) !=
1964 qeth_peer_func_level(card->info.func_level)) {
1965 QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n",
1966 CCW_DEVID(channel->ccwdev),
1967 card->info.func_level, peer_level);
1968 rc = -EINVAL;
1969 }
1970
1971 out:
1972 qeth_notify_cmd(iob, rc);
1973 qeth_put_cmd(iob);
1974 }
1975
1976 static void qeth_idx_setup_activate_cmd(struct qeth_card *card,
1977 struct qeth_cmd_buffer *iob)
1978 {
1979 u16 addr = (card->info.cula << 8) + card->info.unit_addr2;
1980 u8 port = ((u8)card->dev->dev_port) | 0x80;
1981 struct ccw1 *ccw = __ccw_from_cmd(iob);
1982 struct ccw_dev_id dev_id;
1983
1984 qeth_setup_ccw(&ccw[0], CCW_CMD_WRITE, CCW_FLAG_CC, IDX_ACTIVATE_SIZE,
1985 iob->data);
1986 qeth_setup_ccw(&ccw[1], CCW_CMD_READ, 0, iob->length, iob->data);
1987 ccw_device_get_id(CARD_DDEV(card), &dev_id);
1988 iob->finalize = qeth_idx_finalize_cmd;
1989
1990 memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 1);
1991 memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1992 &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1993 memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1994 &card->info.func_level, 2);
1995 memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2);
1996 memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2);
1997 }
1998
1999 static int qeth_idx_activate_read_channel(struct qeth_card *card)
2000 {
2001 struct qeth_channel *channel = &card->read;
2002 struct qeth_cmd_buffer *iob;
2003 int rc;
2004
2005 QETH_CARD_TEXT(card, 2, "idxread");
2006
2007 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2008 if (!iob)
2009 return -ENOMEM;
2010
2011 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
2012 qeth_idx_setup_activate_cmd(card, iob);
2013 iob->callback = qeth_idx_activate_read_channel_cb;
2014
2015 rc = qeth_send_control_data(card, iob, NULL, NULL);
2016 if (rc)
2017 return rc;
2018
2019 channel->state = CH_STATE_UP;
2020 return 0;
2021 }
2022
2023 static int qeth_idx_activate_write_channel(struct qeth_card *card)
2024 {
2025 struct qeth_channel *channel = &card->write;
2026 struct qeth_cmd_buffer *iob;
2027 int rc;
2028
2029 QETH_CARD_TEXT(card, 2, "idxwrite");
2030
2031 iob = qeth_alloc_cmd(channel, QETH_BUFSIZE, 2, QETH_TIMEOUT);
2032 if (!iob)
2033 return -ENOMEM;
2034
2035 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
2036 qeth_idx_setup_activate_cmd(card, iob);
2037 iob->callback = qeth_idx_activate_write_channel_cb;
2038
2039 rc = qeth_send_control_data(card, iob, NULL, NULL);
2040 if (rc)
2041 return rc;
2042
2043 channel->state = CH_STATE_UP;
2044 return 0;
2045 }
2046
2047 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2048 unsigned long data)
2049 {
2050 struct qeth_cmd_buffer *iob;
2051
2052 QETH_CARD_TEXT(card, 2, "cmenblcb");
2053
2054 iob = (struct qeth_cmd_buffer *) data;
2055 memcpy(&card->token.cm_filter_r,
2056 QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2057 QETH_MPC_TOKEN_LENGTH);
2058 return 0;
2059 }
2060
2061 static int qeth_cm_enable(struct qeth_card *card)
2062 {
2063 struct qeth_cmd_buffer *iob;
2064
2065 QETH_CARD_TEXT(card, 2, "cmenable");
2066
2067 iob = qeth_mpc_alloc_cmd(card, CM_ENABLE, CM_ENABLE_SIZE);
2068 if (!iob)
2069 return -ENOMEM;
2070
2071 memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2072 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2073 memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2074 &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2075
2076 return qeth_send_control_data(card, iob, qeth_cm_enable_cb, NULL);
2077 }
2078
2079 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2080 unsigned long data)
2081 {
2082 struct qeth_cmd_buffer *iob;
2083
2084 QETH_CARD_TEXT(card, 2, "cmsetpcb");
2085
2086 iob = (struct qeth_cmd_buffer *) data;
2087 memcpy(&card->token.cm_connection_r,
2088 QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2089 QETH_MPC_TOKEN_LENGTH);
2090 return 0;
2091 }
2092
2093 static int qeth_cm_setup(struct qeth_card *card)
2094 {
2095 struct qeth_cmd_buffer *iob;
2096
2097 QETH_CARD_TEXT(card, 2, "cmsetup");
2098
2099 iob = qeth_mpc_alloc_cmd(card, CM_SETUP, CM_SETUP_SIZE);
2100 if (!iob)
2101 return -ENOMEM;
2102
2103 memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2104 &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2105 memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2106 &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2107 memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2108 &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2109 return qeth_send_control_data(card, iob, qeth_cm_setup_cb, NULL);
2110 }
2111
2112 static int qeth_update_max_mtu(struct qeth_card *card, unsigned int max_mtu)
2113 {
2114 struct net_device *dev = card->dev;
2115 unsigned int new_mtu;
2116
2117 if (!max_mtu) {
2118
2119 if (IS_IQD(card))
2120 return -EINVAL;
2121
2122 max_mtu = ETH_MAX_MTU;
2123 }
2124
2125 rtnl_lock();
2126 if (IS_IQD(card)) {
2127
2128 new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu;
2129
2130
2131 card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE;
2132 if (dev->max_mtu && dev->max_mtu != max_mtu)
2133 qeth_free_qdio_queues(card);
2134 } else {
2135 if (dev->mtu)
2136 new_mtu = dev->mtu;
2137
2138 else if (IS_LAYER2(card))
2139 new_mtu = ETH_DATA_LEN;
2140 else
2141 new_mtu = ETH_DATA_LEN - 8;
2142 }
2143
2144 dev->max_mtu = max_mtu;
2145 dev->mtu = min(new_mtu, max_mtu);
2146 rtnl_unlock();
2147 return 0;
2148 }
2149
2150 static int qeth_get_mtu_outof_framesize(int framesize)
2151 {
2152 switch (framesize) {
2153 case 0x4000:
2154 return 8192;
2155 case 0x6000:
2156 return 16384;
2157 case 0xa000:
2158 return 32768;
2159 case 0xffff:
2160 return 57344;
2161 default:
2162 return 0;
2163 }
2164 }
2165
2166 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2167 unsigned long data)
2168 {
2169 __u16 mtu, framesize;
2170 __u16 len;
2171 __u8 link_type;
2172 struct qeth_cmd_buffer *iob;
2173
2174 QETH_CARD_TEXT(card, 2, "ulpenacb");
2175
2176 iob = (struct qeth_cmd_buffer *) data;
2177 memcpy(&card->token.ulp_filter_r,
2178 QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2179 QETH_MPC_TOKEN_LENGTH);
2180 if (IS_IQD(card)) {
2181 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2182 mtu = qeth_get_mtu_outof_framesize(framesize);
2183 } else {
2184 mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data);
2185 }
2186 *(u16 *)reply->param = mtu;
2187
2188 memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2189 if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2190 memcpy(&link_type,
2191 QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2192 card->info.link_type = link_type;
2193 } else
2194 card->info.link_type = 0;
2195 QETH_CARD_TEXT_(card, 2, "link%d", card->info.link_type);
2196 return 0;
2197 }
2198
2199 static u8 qeth_mpc_select_prot_type(struct qeth_card *card)
2200 {
2201 if (IS_OSN(card))
2202 return QETH_PROT_OSN2;
2203 return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP;
2204 }
2205
2206 static int qeth_ulp_enable(struct qeth_card *card)
2207 {
2208 u8 prot_type = qeth_mpc_select_prot_type(card);
2209 struct qeth_cmd_buffer *iob;
2210 u16 max_mtu;
2211 int rc;
2212
2213 QETH_CARD_TEXT(card, 2, "ulpenabl");
2214
2215 iob = qeth_mpc_alloc_cmd(card, ULP_ENABLE, ULP_ENABLE_SIZE);
2216 if (!iob)
2217 return -ENOMEM;
2218
2219 *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port;
2220 memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2221 memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2222 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2223 memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2224 &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2225 rc = qeth_send_control_data(card, iob, qeth_ulp_enable_cb, &max_mtu);
2226 if (rc)
2227 return rc;
2228 return qeth_update_max_mtu(card, max_mtu);
2229 }
2230
2231 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2232 unsigned long data)
2233 {
2234 struct qeth_cmd_buffer *iob;
2235
2236 QETH_CARD_TEXT(card, 2, "ulpstpcb");
2237
2238 iob = (struct qeth_cmd_buffer *) data;
2239 memcpy(&card->token.ulp_connection_r,
2240 QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2241 QETH_MPC_TOKEN_LENGTH);
2242 if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2243 3)) {
2244 QETH_CARD_TEXT(card, 2, "olmlimit");
2245 dev_err(&card->gdev->dev, "A connection could not be "
2246 "established because of an OLM limit\n");
2247 return -EMLINK;
2248 }
2249 return 0;
2250 }
2251
2252 static int qeth_ulp_setup(struct qeth_card *card)
2253 {
2254 __u16 temp;
2255 struct qeth_cmd_buffer *iob;
2256 struct ccw_dev_id dev_id;
2257
2258 QETH_CARD_TEXT(card, 2, "ulpsetup");
2259
2260 iob = qeth_mpc_alloc_cmd(card, ULP_SETUP, ULP_SETUP_SIZE);
2261 if (!iob)
2262 return -ENOMEM;
2263
2264 memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2265 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2266 memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2267 &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2268 memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2269 &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2270
2271 ccw_device_get_id(CARD_DDEV(card), &dev_id);
2272 memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2273 temp = (card->info.cula << 8) + card->info.unit_addr2;
2274 memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2275 return qeth_send_control_data(card, iob, qeth_ulp_setup_cb, NULL);
2276 }
2277
2278 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2279 {
2280 struct qeth_qdio_out_buffer *newbuf;
2281
2282 newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2283 if (!newbuf)
2284 return -ENOMEM;
2285
2286 newbuf->buffer = q->qdio_bufs[bidx];
2287 skb_queue_head_init(&newbuf->skb_list);
2288 lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2289 newbuf->q = q;
2290 newbuf->next_pending = q->bufs[bidx];
2291 atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2292 q->bufs[bidx] = newbuf;
2293 return 0;
2294 }
2295
2296 static void qeth_free_output_queue(struct qeth_qdio_out_q *q)
2297 {
2298 if (!q)
2299 return;
2300
2301 qeth_drain_output_queue(q, true);
2302 qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2303 kfree(q);
2304 }
2305
2306 static struct qeth_qdio_out_q *qeth_alloc_output_queue(void)
2307 {
2308 struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2309
2310 if (!q)
2311 return NULL;
2312
2313 if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2314 kfree(q);
2315 return NULL;
2316 }
2317 return q;
2318 }
2319
2320 static void qeth_tx_completion_timer(struct timer_list *timer)
2321 {
2322 struct qeth_qdio_out_q *queue = from_timer(queue, timer, timer);
2323
2324 napi_schedule(&queue->napi);
2325 QETH_TXQ_STAT_INC(queue, completion_timer);
2326 }
2327
2328 static int qeth_alloc_qdio_queues(struct qeth_card *card)
2329 {
2330 int i, j;
2331
2332 QETH_CARD_TEXT(card, 2, "allcqdbf");
2333
2334 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2335 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2336 return 0;
2337
2338 QETH_CARD_TEXT(card, 2, "inq");
2339 card->qdio.in_q = qeth_alloc_qdio_queue();
2340 if (!card->qdio.in_q)
2341 goto out_nomem;
2342
2343
2344 if (qeth_alloc_buffer_pool(card))
2345 goto out_freeinq;
2346
2347
2348 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2349 struct qeth_qdio_out_q *queue;
2350
2351 queue = qeth_alloc_output_queue();
2352 if (!queue)
2353 goto out_freeoutq;
2354 QETH_CARD_TEXT_(card, 2, "outq %i", i);
2355 QETH_CARD_HEX(card, 2, &queue, sizeof(void *));
2356 card->qdio.out_qs[i] = queue;
2357 queue->card = card;
2358 queue->queue_no = i;
2359 timer_setup(&queue->timer, qeth_tx_completion_timer, 0);
2360
2361
2362 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2363 WARN_ON(queue->bufs[j]);
2364 if (qeth_init_qdio_out_buf(queue, j))
2365 goto out_freeoutqbufs;
2366 }
2367 }
2368
2369
2370 if (qeth_alloc_cq(card))
2371 goto out_freeoutq;
2372
2373 return 0;
2374
2375 out_freeoutqbufs:
2376 while (j > 0) {
2377 --j;
2378 kmem_cache_free(qeth_qdio_outbuf_cache,
2379 card->qdio.out_qs[i]->bufs[j]);
2380 card->qdio.out_qs[i]->bufs[j] = NULL;
2381 }
2382 out_freeoutq:
2383 while (i > 0) {
2384 qeth_free_output_queue(card->qdio.out_qs[--i]);
2385 card->qdio.out_qs[i] = NULL;
2386 }
2387 qeth_free_buffer_pool(card);
2388 out_freeinq:
2389 qeth_free_qdio_queue(card->qdio.in_q);
2390 card->qdio.in_q = NULL;
2391 out_nomem:
2392 atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2393 return -ENOMEM;
2394 }
2395
2396 static void qeth_free_qdio_queues(struct qeth_card *card)
2397 {
2398 int i, j;
2399
2400 if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2401 QETH_QDIO_UNINITIALIZED)
2402 return;
2403
2404 qeth_free_cq(card);
2405 cancel_delayed_work_sync(&card->buffer_reclaim_work);
2406 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2407 if (card->qdio.in_q->bufs[j].rx_skb)
2408 dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2409 }
2410 qeth_free_qdio_queue(card->qdio.in_q);
2411 card->qdio.in_q = NULL;
2412
2413 qeth_free_buffer_pool(card);
2414
2415 for (i = 0; i < card->qdio.no_out_queues; i++) {
2416 qeth_free_output_queue(card->qdio.out_qs[i]);
2417 card->qdio.out_qs[i] = NULL;
2418 }
2419 }
2420
2421 static void qeth_create_qib_param_field(struct qeth_card *card,
2422 char *param_field)
2423 {
2424
2425 param_field[0] = _ascebc['P'];
2426 param_field[1] = _ascebc['C'];
2427 param_field[2] = _ascebc['I'];
2428 param_field[3] = _ascebc['T'];
2429 *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
2430 *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
2431 *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card);
2432 }
2433
2434 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2435 char *param_field)
2436 {
2437 param_field[16] = _ascebc['B'];
2438 param_field[17] = _ascebc['L'];
2439 param_field[18] = _ascebc['K'];
2440 param_field[19] = _ascebc['T'];
2441 *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total;
2442 *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
2443 *((unsigned int *) (¶m_field[28])) =
2444 card->info.blkt.inter_packet_jumbo;
2445 }
2446
2447 static int qeth_qdio_activate(struct qeth_card *card)
2448 {
2449 QETH_CARD_TEXT(card, 3, "qdioact");
2450 return qdio_activate(CARD_DDEV(card));
2451 }
2452
2453 static int qeth_dm_act(struct qeth_card *card)
2454 {
2455 struct qeth_cmd_buffer *iob;
2456
2457 QETH_CARD_TEXT(card, 2, "dmact");
2458
2459 iob = qeth_mpc_alloc_cmd(card, DM_ACT, DM_ACT_SIZE);
2460 if (!iob)
2461 return -ENOMEM;
2462
2463 memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2464 &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2465 memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2466 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2467 return qeth_send_control_data(card, iob, NULL, NULL);
2468 }
2469
2470 static int qeth_mpc_initialize(struct qeth_card *card)
2471 {
2472 int rc;
2473
2474 QETH_CARD_TEXT(card, 2, "mpcinit");
2475
2476 rc = qeth_issue_next_read(card);
2477 if (rc) {
2478 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2479 return rc;
2480 }
2481 rc = qeth_cm_enable(card);
2482 if (rc) {
2483 QETH_CARD_TEXT_(card, 2, "2err%d", rc);
2484 return rc;
2485 }
2486 rc = qeth_cm_setup(card);
2487 if (rc) {
2488 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2489 return rc;
2490 }
2491 rc = qeth_ulp_enable(card);
2492 if (rc) {
2493 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
2494 return rc;
2495 }
2496 rc = qeth_ulp_setup(card);
2497 if (rc) {
2498 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2499 return rc;
2500 }
2501 rc = qeth_alloc_qdio_queues(card);
2502 if (rc) {
2503 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
2504 return rc;
2505 }
2506 rc = qeth_qdio_establish(card);
2507 if (rc) {
2508 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2509 qeth_free_qdio_queues(card);
2510 return rc;
2511 }
2512 rc = qeth_qdio_activate(card);
2513 if (rc) {
2514 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
2515 return rc;
2516 }
2517 rc = qeth_dm_act(card);
2518 if (rc) {
2519 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
2520 return rc;
2521 }
2522
2523 return 0;
2524 }
2525
2526 void qeth_print_status_message(struct qeth_card *card)
2527 {
2528 switch (card->info.type) {
2529 case QETH_CARD_TYPE_OSD:
2530 case QETH_CARD_TYPE_OSM:
2531 case QETH_CARD_TYPE_OSX:
2532
2533
2534
2535
2536 if (!card->info.mcl_level[0]) {
2537 sprintf(card->info.mcl_level, "%02x%02x",
2538 card->info.mcl_level[2],
2539 card->info.mcl_level[3]);
2540 break;
2541 }
2542
2543 case QETH_CARD_TYPE_IQD:
2544 if (IS_VM_NIC(card) || (card->info.mcl_level[0] & 0x80)) {
2545 card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2546 card->info.mcl_level[0]];
2547 card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2548 card->info.mcl_level[1]];
2549 card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2550 card->info.mcl_level[2]];
2551 card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2552 card->info.mcl_level[3]];
2553 card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2554 }
2555 break;
2556 default:
2557 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2558 }
2559 dev_info(&card->gdev->dev,
2560 "Device is a%s card%s%s%s\nwith link type %s.\n",
2561 qeth_get_cardname(card),
2562 (card->info.mcl_level[0]) ? " (level: " : "",
2563 (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2564 (card->info.mcl_level[0]) ? ")" : "",
2565 qeth_get_cardname_short(card));
2566 }
2567 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2568
2569 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2570 {
2571 struct qeth_buffer_pool_entry *entry;
2572
2573 QETH_CARD_TEXT(card, 5, "inwrklst");
2574
2575 list_for_each_entry(entry,
2576 &card->qdio.init_pool.entry_list, init_list) {
2577 qeth_put_buffer_pool_entry(card, entry);
2578 }
2579 }
2580
2581 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2582 struct qeth_card *card)
2583 {
2584 struct list_head *plh;
2585 struct qeth_buffer_pool_entry *entry;
2586 int i, free;
2587 struct page *page;
2588
2589 if (list_empty(&card->qdio.in_buf_pool.entry_list))
2590 return NULL;
2591
2592 list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2593 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2594 free = 1;
2595 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2596 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2597 free = 0;
2598 break;
2599 }
2600 }
2601 if (free) {
2602 list_del_init(&entry->list);
2603 return entry;
2604 }
2605 }
2606
2607
2608 entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2609 struct qeth_buffer_pool_entry, list);
2610 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2611 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2612 page = alloc_page(GFP_ATOMIC);
2613 if (!page) {
2614 return NULL;
2615 } else {
2616 free_page((unsigned long)entry->elements[i]);
2617 entry->elements[i] = page_address(page);
2618 QETH_CARD_STAT_INC(card, rx_sg_alloc_page);
2619 }
2620 }
2621 }
2622 list_del_init(&entry->list);
2623 return entry;
2624 }
2625
2626 static int qeth_init_input_buffer(struct qeth_card *card,
2627 struct qeth_qdio_buffer *buf)
2628 {
2629 struct qeth_buffer_pool_entry *pool_entry;
2630 int i;
2631
2632 if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2633 buf->rx_skb = netdev_alloc_skb(card->dev,
2634 QETH_RX_PULL_LEN + ETH_HLEN);
2635 if (!buf->rx_skb)
2636 return -ENOMEM;
2637 }
2638
2639 pool_entry = qeth_find_free_buffer_pool_entry(card);
2640 if (!pool_entry)
2641 return -ENOBUFS;
2642
2643
2644
2645
2646
2647
2648
2649
2650 buf->pool_entry = pool_entry;
2651 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2652 buf->buffer->element[i].length = PAGE_SIZE;
2653 buf->buffer->element[i].addr = pool_entry->elements[i];
2654 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2655 buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2656 else
2657 buf->buffer->element[i].eflags = 0;
2658 buf->buffer->element[i].sflags = 0;
2659 }
2660 return 0;
2661 }
2662
2663 int qeth_init_qdio_queues(struct qeth_card *card)
2664 {
2665 unsigned int i;
2666 int rc;
2667
2668 QETH_CARD_TEXT(card, 2, "initqdqs");
2669
2670
2671 qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2672 memset(&card->rx, 0, sizeof(struct qeth_rx));
2673
2674 qeth_initialize_working_pool_list(card);
2675
2676 for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; i++) {
2677 rc = qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2678 if (rc)
2679 return rc;
2680 }
2681
2682 card->qdio.in_q->next_buf_to_init =
2683 card->qdio.in_buf_pool.buf_count - 1;
2684 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2685 card->qdio.in_buf_pool.buf_count - 1);
2686 if (rc) {
2687 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2688 return rc;
2689 }
2690
2691
2692 rc = qeth_cq_init(card);
2693 if (rc) {
2694 return rc;
2695 }
2696
2697
2698 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2699 struct qeth_qdio_out_q *queue = card->qdio.out_qs[i];
2700
2701 qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2702 queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card);
2703 queue->next_buf_to_fill = 0;
2704 queue->do_pack = 0;
2705 queue->prev_hdr = NULL;
2706 queue->bulk_start = 0;
2707 atomic_set(&queue->used_buffers, 0);
2708 atomic_set(&queue->set_pci_flags_count, 0);
2709 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
2710 netdev_tx_reset_queue(netdev_get_tx_queue(card->dev, i));
2711 }
2712 return 0;
2713 }
2714 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2715
2716 static void qeth_ipa_finalize_cmd(struct qeth_card *card,
2717 struct qeth_cmd_buffer *iob)
2718 {
2719 qeth_mpc_finalize_cmd(card, iob);
2720
2721
2722 __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
2723 }
2724
2725 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2726 u16 cmd_length)
2727 {
2728 u8 prot_type = qeth_mpc_select_prot_type(card);
2729 u16 total_length = iob->length;
2730
2731 qeth_setup_ccw(__ccw_from_cmd(iob), CCW_CMD_WRITE, 0, total_length,
2732 iob->data);
2733 iob->finalize = qeth_ipa_finalize_cmd;
2734
2735 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2736 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2);
2737 memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2738 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2);
2739 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2);
2740 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2741 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2742 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2);
2743 }
2744 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2745
2746 struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
2747 enum qeth_ipa_cmds cmd_code,
2748 enum qeth_prot_versions prot,
2749 unsigned int data_length)
2750 {
2751 enum qeth_link_types link_type = card->info.link_type;
2752 struct qeth_cmd_buffer *iob;
2753 struct qeth_ipacmd_hdr *hdr;
2754
2755 data_length += offsetof(struct qeth_ipa_cmd, data);
2756 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_length, 1,
2757 QETH_IPA_TIMEOUT);
2758 if (!iob)
2759 return NULL;
2760
2761 qeth_prepare_ipa_cmd(card, iob, data_length);
2762
2763 hdr = &__ipa_cmd(iob)->hdr;
2764 hdr->command = cmd_code;
2765 hdr->initiator = IPA_CMD_INITIATOR_HOST;
2766
2767 hdr->adapter_type = (link_type == QETH_LINK_TYPE_HSTR) ? 2 : 1;
2768 hdr->rel_adapter_no = (u8) card->dev->dev_port;
2769 hdr->prim_version_no = IS_LAYER2(card) ? 2 : 1;
2770 hdr->param_count = 1;
2771 hdr->prot_version = prot;
2772 return iob;
2773 }
2774 EXPORT_SYMBOL_GPL(qeth_ipa_alloc_cmd);
2775
2776 static int qeth_send_ipa_cmd_cb(struct qeth_card *card,
2777 struct qeth_reply *reply, unsigned long data)
2778 {
2779 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2780
2781 return (cmd->hdr.return_code) ? -EIO : 0;
2782 }
2783
2784
2785
2786
2787
2788
2789
2790 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2791 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2792 unsigned long),
2793 void *reply_param)
2794 {
2795 int rc;
2796
2797 QETH_CARD_TEXT(card, 4, "sendipa");
2798
2799 if (card->read_or_write_problem) {
2800 qeth_put_cmd(iob);
2801 return -EIO;
2802 }
2803
2804 if (reply_cb == NULL)
2805 reply_cb = qeth_send_ipa_cmd_cb;
2806 rc = qeth_send_control_data(card, iob, reply_cb, reply_param);
2807 if (rc == -ETIME) {
2808 qeth_clear_ipacmd_list(card);
2809 qeth_schedule_recovery(card);
2810 }
2811 return rc;
2812 }
2813 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
2814
2815 static int qeth_send_startlan_cb(struct qeth_card *card,
2816 struct qeth_reply *reply, unsigned long data)
2817 {
2818 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2819
2820 if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE)
2821 return -ENETDOWN;
2822
2823 return (cmd->hdr.return_code) ? -EIO : 0;
2824 }
2825
2826 static int qeth_send_startlan(struct qeth_card *card)
2827 {
2828 struct qeth_cmd_buffer *iob;
2829
2830 QETH_CARD_TEXT(card, 2, "strtlan");
2831
2832 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_STARTLAN, QETH_PROT_NONE, 0);
2833 if (!iob)
2834 return -ENOMEM;
2835 return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL);
2836 }
2837
2838 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
2839 {
2840 if (!cmd->hdr.return_code)
2841 cmd->hdr.return_code =
2842 cmd->data.setadapterparms.hdr.return_code;
2843 return cmd->hdr.return_code;
2844 }
2845
2846 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
2847 struct qeth_reply *reply, unsigned long data)
2848 {
2849 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2850
2851 QETH_CARD_TEXT(card, 3, "quyadpcb");
2852 if (qeth_setadpparms_inspect_rc(cmd))
2853 return -EIO;
2854
2855 if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
2856 card->info.link_type =
2857 cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2858 QETH_CARD_TEXT_(card, 2, "lnk %d", card->info.link_type);
2859 }
2860 card->options.adp.supported_funcs =
2861 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
2862 return 0;
2863 }
2864
2865 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
2866 enum qeth_ipa_setadp_cmd adp_cmd,
2867 unsigned int data_length)
2868 {
2869 struct qeth_ipacmd_setadpparms_hdr *hdr;
2870 struct qeth_cmd_buffer *iob;
2871
2872 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
2873 data_length +
2874 offsetof(struct qeth_ipacmd_setadpparms,
2875 data));
2876 if (!iob)
2877 return NULL;
2878
2879 hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
2880 hdr->cmdlength = sizeof(*hdr) + data_length;
2881 hdr->command_code = adp_cmd;
2882 hdr->used_total = 1;
2883 hdr->seq_no = 1;
2884 return iob;
2885 }
2886
2887 static int qeth_query_setadapterparms(struct qeth_card *card)
2888 {
2889 int rc;
2890 struct qeth_cmd_buffer *iob;
2891
2892 QETH_CARD_TEXT(card, 3, "queryadp");
2893 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
2894 SETADP_DATA_SIZEOF(query_cmds_supp));
2895 if (!iob)
2896 return -ENOMEM;
2897 rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
2898 return rc;
2899 }
2900
2901 static int qeth_query_ipassists_cb(struct qeth_card *card,
2902 struct qeth_reply *reply, unsigned long data)
2903 {
2904 struct qeth_ipa_cmd *cmd;
2905
2906 QETH_CARD_TEXT(card, 2, "qipasscb");
2907
2908 cmd = (struct qeth_ipa_cmd *) data;
2909
2910 switch (cmd->hdr.return_code) {
2911 case IPA_RC_SUCCESS:
2912 break;
2913 case IPA_RC_NOTSUPP:
2914 case IPA_RC_L2_UNSUPPORTED_CMD:
2915 QETH_CARD_TEXT(card, 2, "ipaunsup");
2916 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
2917 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
2918 return -EOPNOTSUPP;
2919 default:
2920 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n",
2921 CARD_DEVID(card), cmd->hdr.return_code);
2922 return -EIO;
2923 }
2924
2925 if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
2926 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
2927 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
2928 } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
2929 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
2930 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2931 } else
2932 QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n",
2933 CARD_DEVID(card));
2934 return 0;
2935 }
2936
2937 static int qeth_query_ipassists(struct qeth_card *card,
2938 enum qeth_prot_versions prot)
2939 {
2940 int rc;
2941 struct qeth_cmd_buffer *iob;
2942
2943 QETH_CARD_TEXT_(card, 2, "qipassi%i", prot);
2944 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_QIPASSIST, prot, 0);
2945 if (!iob)
2946 return -ENOMEM;
2947 rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
2948 return rc;
2949 }
2950
2951 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
2952 struct qeth_reply *reply, unsigned long data)
2953 {
2954 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2955 struct qeth_query_switch_attributes *attrs;
2956 struct qeth_switch_info *sw_info;
2957
2958 QETH_CARD_TEXT(card, 2, "qswiatcb");
2959 if (qeth_setadpparms_inspect_rc(cmd))
2960 return -EIO;
2961
2962 sw_info = (struct qeth_switch_info *)reply->param;
2963 attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
2964 sw_info->capabilities = attrs->capabilities;
2965 sw_info->settings = attrs->settings;
2966 QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
2967 sw_info->settings);
2968 return 0;
2969 }
2970
2971 int qeth_query_switch_attributes(struct qeth_card *card,
2972 struct qeth_switch_info *sw_info)
2973 {
2974 struct qeth_cmd_buffer *iob;
2975
2976 QETH_CARD_TEXT(card, 2, "qswiattr");
2977 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
2978 return -EOPNOTSUPP;
2979 if (!netif_carrier_ok(card->dev))
2980 return -ENOMEDIUM;
2981 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
2982 if (!iob)
2983 return -ENOMEM;
2984 return qeth_send_ipa_cmd(card, iob,
2985 qeth_query_switch_attributes_cb, sw_info);
2986 }
2987
2988 struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
2989 enum qeth_diags_cmds sub_cmd,
2990 unsigned int data_length)
2991 {
2992 struct qeth_ipacmd_diagass *cmd;
2993 struct qeth_cmd_buffer *iob;
2994
2995 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SET_DIAG_ASS, QETH_PROT_NONE,
2996 DIAG_HDR_LEN + data_length);
2997 if (!iob)
2998 return NULL;
2999
3000 cmd = &__ipa_cmd(iob)->data.diagass;
3001 cmd->subcmd_len = DIAG_SUB_HDR_LEN + data_length;
3002 cmd->subcmd = sub_cmd;
3003 return iob;
3004 }
3005 EXPORT_SYMBOL_GPL(qeth_get_diag_cmd);
3006
3007 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3008 struct qeth_reply *reply, unsigned long data)
3009 {
3010 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3011 u16 rc = cmd->hdr.return_code;
3012
3013 if (rc) {
3014 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3015 return -EIO;
3016 }
3017
3018 card->info.diagass_support = cmd->data.diagass.ext;
3019 return 0;
3020 }
3021
3022 static int qeth_query_setdiagass(struct qeth_card *card)
3023 {
3024 struct qeth_cmd_buffer *iob;
3025
3026 QETH_CARD_TEXT(card, 2, "qdiagass");
3027 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_QUERY, 0);
3028 if (!iob)
3029 return -ENOMEM;
3030 return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3031 }
3032
3033 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3034 {
3035 unsigned long info = get_zeroed_page(GFP_KERNEL);
3036 struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3037 struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3038 struct ccw_dev_id ccwid;
3039 int level;
3040
3041 tid->chpid = card->info.chpid;
3042 ccw_device_get_id(CARD_RDEV(card), &ccwid);
3043 tid->ssid = ccwid.ssid;
3044 tid->devno = ccwid.devno;
3045 if (!info)
3046 return;
3047 level = stsi(NULL, 0, 0, 0);
3048 if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3049 tid->lparnr = info222->lpar_number;
3050 if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3051 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3052 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3053 }
3054 free_page(info);
3055 return;
3056 }
3057
3058 static int qeth_hw_trap_cb(struct qeth_card *card,
3059 struct qeth_reply *reply, unsigned long data)
3060 {
3061 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3062 u16 rc = cmd->hdr.return_code;
3063
3064 if (rc) {
3065 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3066 return -EIO;
3067 }
3068 return 0;
3069 }
3070
3071 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3072 {
3073 struct qeth_cmd_buffer *iob;
3074 struct qeth_ipa_cmd *cmd;
3075
3076 QETH_CARD_TEXT(card, 2, "diagtrap");
3077 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRAP, 64);
3078 if (!iob)
3079 return -ENOMEM;
3080 cmd = __ipa_cmd(iob);
3081 cmd->data.diagass.type = 1;
3082 cmd->data.diagass.action = action;
3083 switch (action) {
3084 case QETH_DIAGS_TRAP_ARM:
3085 cmd->data.diagass.options = 0x0003;
3086 cmd->data.diagass.ext = 0x00010000 +
3087 sizeof(struct qeth_trap_id);
3088 qeth_get_trap_id(card,
3089 (struct qeth_trap_id *)cmd->data.diagass.cdata);
3090 break;
3091 case QETH_DIAGS_TRAP_DISARM:
3092 cmd->data.diagass.options = 0x0001;
3093 break;
3094 case QETH_DIAGS_TRAP_CAPTURE:
3095 break;
3096 }
3097 return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3098 }
3099 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3100
3101 static int qeth_check_qdio_errors(struct qeth_card *card,
3102 struct qdio_buffer *buf,
3103 unsigned int qdio_error,
3104 const char *dbftext)
3105 {
3106 if (qdio_error) {
3107 QETH_CARD_TEXT(card, 2, dbftext);
3108 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3109 buf->element[15].sflags);
3110 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3111 buf->element[14].sflags);
3112 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3113 if ((buf->element[15].sflags) == 0x12) {
3114 QETH_CARD_STAT_INC(card, rx_dropped);
3115 return 0;
3116 } else
3117 return 1;
3118 }
3119 return 0;
3120 }
3121
3122 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3123 {
3124 struct qeth_qdio_q *queue = card->qdio.in_q;
3125 struct list_head *lh;
3126 int count;
3127 int i;
3128 int rc;
3129 int newcount = 0;
3130
3131 count = (index < queue->next_buf_to_init)?
3132 card->qdio.in_buf_pool.buf_count -
3133 (queue->next_buf_to_init - index) :
3134 card->qdio.in_buf_pool.buf_count -
3135 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3136
3137 if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3138 for (i = queue->next_buf_to_init;
3139 i < queue->next_buf_to_init + count; ++i) {
3140 if (qeth_init_input_buffer(card,
3141 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3142 break;
3143 } else {
3144 newcount++;
3145 }
3146 }
3147
3148 if (newcount < count) {
3149
3150
3151 atomic_set(&card->force_alloc_skb, 3);
3152 count = newcount;
3153 } else {
3154 atomic_add_unless(&card->force_alloc_skb, -1, 0);
3155 }
3156
3157 if (!count) {
3158 i = 0;
3159 list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3160 i++;
3161 if (i == card->qdio.in_buf_pool.buf_count) {
3162 QETH_CARD_TEXT(card, 2, "qsarbw");
3163 card->reclaim_index = index;
3164 schedule_delayed_work(
3165 &card->buffer_reclaim_work,
3166 QETH_RECLAIM_WORK_TIME);
3167 }
3168 return;
3169 }
3170
3171
3172
3173
3174
3175
3176
3177
3178 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3179 queue->next_buf_to_init, count);
3180 if (rc) {
3181 QETH_CARD_TEXT(card, 2, "qinberr");
3182 }
3183 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3184 QDIO_MAX_BUFFERS_PER_Q;
3185 }
3186 }
3187
3188 static void qeth_buffer_reclaim_work(struct work_struct *work)
3189 {
3190 struct qeth_card *card = container_of(work, struct qeth_card,
3191 buffer_reclaim_work.work);
3192
3193 QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3194 qeth_queue_input_buffer(card, card->reclaim_index);
3195 }
3196
3197 static void qeth_handle_send_error(struct qeth_card *card,
3198 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3199 {
3200 int sbalf15 = buffer->buffer->element[15].sflags;
3201
3202 QETH_CARD_TEXT(card, 6, "hdsnderr");
3203 qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3204
3205 if (!qdio_err)
3206 return;
3207
3208 if ((sbalf15 >= 15) && (sbalf15 <= 31))
3209 return;
3210
3211 QETH_CARD_TEXT(card, 1, "lnkfail");
3212 QETH_CARD_TEXT_(card, 1, "%04x %02x",
3213 (u16)qdio_err, (u8)sbalf15);
3214 }
3215
3216
3217
3218
3219
3220
3221
3222 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3223 {
3224 struct qeth_qdio_out_buffer *buffer;
3225
3226 buffer = queue->bufs[queue->next_buf_to_fill];
3227 if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3228 (buffer->next_element_to_fill > 0)) {
3229
3230 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3231 queue->next_buf_to_fill =
3232 (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3233 return 1;
3234 }
3235 return 0;
3236 }
3237
3238
3239
3240
3241
3242 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3243 {
3244 if (!queue->do_pack) {
3245 if (atomic_read(&queue->used_buffers)
3246 >= QETH_HIGH_WATERMARK_PACK){
3247
3248 QETH_CARD_TEXT(queue->card, 6, "np->pack");
3249 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3250 queue->do_pack = 1;
3251 }
3252 }
3253 }
3254
3255
3256
3257
3258
3259
3260
3261 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3262 {
3263 if (queue->do_pack) {
3264 if (atomic_read(&queue->used_buffers)
3265 <= QETH_LOW_WATERMARK_PACK) {
3266
3267 QETH_CARD_TEXT(queue->card, 6, "pack->np");
3268 QETH_TXQ_STAT_INC(queue, packing_mode_switch);
3269 queue->do_pack = 0;
3270 return qeth_prep_flush_pack_buffer(queue);
3271 }
3272 }
3273 return 0;
3274 }
3275
3276 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3277 int count)
3278 {
3279 struct qeth_card *card = queue->card;
3280 struct qeth_qdio_out_buffer *buf;
3281 int rc;
3282 int i;
3283 unsigned int qdio_flags;
3284
3285 for (i = index; i < index + count; ++i) {
3286 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3287 buf = queue->bufs[bidx];
3288 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3289 SBAL_EFLAGS_LAST_ENTRY;
3290
3291 if (queue->bufstates)
3292 queue->bufstates[bidx].user = buf;
3293
3294 if (IS_IQD(queue->card))
3295 continue;
3296
3297 if (!queue->do_pack) {
3298 if ((atomic_read(&queue->used_buffers) >=
3299 (QETH_HIGH_WATERMARK_PACK -
3300 QETH_WATERMARK_PACK_FUZZ)) &&
3301 !atomic_read(&queue->set_pci_flags_count)) {
3302
3303
3304 atomic_inc(&queue->set_pci_flags_count);
3305 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3306 }
3307 } else {
3308 if (!atomic_read(&queue->set_pci_flags_count)) {
3309
3310
3311
3312
3313
3314
3315
3316
3317 atomic_inc(&queue->set_pci_flags_count);
3318 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3319 }
3320 }
3321 }
3322
3323 qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3324 if (atomic_read(&queue->set_pci_flags_count))
3325 qdio_flags |= QDIO_FLAG_PCI_OUT;
3326 rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3327 queue->queue_no, index, count);
3328
3329
3330 if (IS_IQD(card))
3331 napi_schedule(&queue->napi);
3332
3333 if (rc) {
3334
3335 if (rc == -ENOBUFS)
3336 return;
3337 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3338 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3339 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3340 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3341 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3342
3343
3344
3345 qeth_schedule_recovery(queue->card);
3346 return;
3347 }
3348 }
3349
3350 static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
3351 {
3352 qeth_flush_buffers(queue, queue->bulk_start, 1);
3353
3354 queue->bulk_start = QDIO_BUFNR(queue->bulk_start + 1);
3355 queue->prev_hdr = NULL;
3356 }
3357
3358 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3359 {
3360 int index;
3361 int flush_cnt = 0;
3362 int q_was_packing = 0;
3363
3364
3365
3366
3367
3368 if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3369 !atomic_read(&queue->set_pci_flags_count)) {
3370 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3371 QETH_OUT_Q_UNLOCKED) {
3372
3373
3374
3375
3376
3377 index = queue->next_buf_to_fill;
3378 q_was_packing = queue->do_pack;
3379
3380 barrier();
3381 flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3382 if (!flush_cnt &&
3383 !atomic_read(&queue->set_pci_flags_count))
3384 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3385 if (q_was_packing)
3386 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt);
3387 if (flush_cnt)
3388 qeth_flush_buffers(queue, index, flush_cnt);
3389 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3390 }
3391 }
3392 }
3393
3394 static void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3395 unsigned long card_ptr)
3396 {
3397 struct qeth_card *card = (struct qeth_card *)card_ptr;
3398
3399 if (card->dev->flags & IFF_UP)
3400 napi_schedule(&card->napi);
3401 }
3402
3403 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3404 {
3405 int rc;
3406
3407 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
3408 rc = -1;
3409 goto out;
3410 } else {
3411 if (card->options.cq == cq) {
3412 rc = 0;
3413 goto out;
3414 }
3415
3416 qeth_free_qdio_queues(card);
3417 card->options.cq = cq;
3418 rc = 0;
3419 }
3420 out:
3421 return rc;
3422
3423 }
3424 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3425
3426 static void qeth_qdio_cq_handler(struct qeth_card *card, unsigned int qdio_err,
3427 unsigned int queue, int first_element,
3428 int count)
3429 {
3430 struct qeth_qdio_q *cq = card->qdio.c_q;
3431 int i;
3432 int rc;
3433
3434 if (!qeth_is_cq(card, queue))
3435 return;
3436
3437 QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3438 QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3439 QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3440
3441 if (qdio_err) {
3442 netif_tx_stop_all_queues(card->dev);
3443 qeth_schedule_recovery(card);
3444 return;
3445 }
3446
3447 for (i = first_element; i < first_element + count; ++i) {
3448 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3449 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3450 int e = 0;
3451
3452 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3453 buffer->element[e].addr) {
3454 unsigned long phys_aob_addr;
3455
3456 phys_aob_addr = (unsigned long) buffer->element[e].addr;
3457 qeth_qdio_handle_aob(card, phys_aob_addr);
3458 ++e;
3459 }
3460 qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER);
3461 }
3462 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3463 card->qdio.c_q->next_buf_to_init,
3464 count);
3465 if (rc) {
3466 dev_warn(&card->gdev->dev,
3467 "QDIO reported an error, rc=%i\n", rc);
3468 QETH_CARD_TEXT(card, 2, "qcqherr");
3469 }
3470 card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3471 + count) % QDIO_MAX_BUFFERS_PER_Q;
3472 }
3473
3474 static void qeth_qdio_input_handler(struct ccw_device *ccwdev,
3475 unsigned int qdio_err, int queue,
3476 int first_elem, int count,
3477 unsigned long card_ptr)
3478 {
3479 struct qeth_card *card = (struct qeth_card *)card_ptr;
3480
3481 QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3482 QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3483
3484 if (qeth_is_cq(card, queue))
3485 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3486 else if (qdio_err)
3487 qeth_schedule_recovery(card);
3488 }
3489
3490 static void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3491 unsigned int qdio_error, int __queue,
3492 int first_element, int count,
3493 unsigned long card_ptr)
3494 {
3495 struct qeth_card *card = (struct qeth_card *) card_ptr;
3496 struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3497 struct qeth_qdio_out_buffer *buffer;
3498 struct net_device *dev = card->dev;
3499 struct netdev_queue *txq;
3500 int i;
3501
3502 QETH_CARD_TEXT(card, 6, "qdouhdl");
3503 if (qdio_error & QDIO_ERROR_FATAL) {
3504 QETH_CARD_TEXT(card, 2, "achkcond");
3505 netif_tx_stop_all_queues(dev);
3506 qeth_schedule_recovery(card);
3507 return;
3508 }
3509
3510 for (i = first_element; i < (first_element + count); ++i) {
3511 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3512 buffer = queue->bufs[bidx];
3513 qeth_handle_send_error(card, buffer, qdio_error);
3514 qeth_clear_output_buffer(queue, buffer, qdio_error, 0);
3515 }
3516
3517 atomic_sub(count, &queue->used_buffers);
3518 qeth_check_outbound_queue(queue);
3519
3520 txq = netdev_get_tx_queue(dev, __queue);
3521
3522
3523
3524
3525 if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue))
3526 netif_tx_wake_queue(txq);
3527 }
3528
3529
3530
3531
3532 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb)
3533 {
3534 struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
3535 u8 tos;
3536
3537 switch (card->qdio.do_prio_queueing) {
3538 case QETH_PRIO_Q_ING_TOS:
3539 case QETH_PRIO_Q_ING_PREC:
3540 switch (qeth_get_ip_version(skb)) {
3541 case 4:
3542 tos = ipv4_get_dsfield(ip_hdr(skb));
3543 break;
3544 case 6:
3545 tos = ipv6_get_dsfield(ipv6_hdr(skb));
3546 break;
3547 default:
3548 return card->qdio.default_out_queue;
3549 }
3550 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3551 return ~tos >> 6 & 3;
3552 if (tos & IPTOS_MINCOST)
3553 return 3;
3554 if (tos & IPTOS_RELIABILITY)
3555 return 2;
3556 if (tos & IPTOS_THROUGHPUT)
3557 return 1;
3558 if (tos & IPTOS_LOWDELAY)
3559 return 0;
3560 break;
3561 case QETH_PRIO_Q_ING_SKB:
3562 if (skb->priority > 5)
3563 return 0;
3564 return ~skb->priority >> 1 & 3;
3565 case QETH_PRIO_Q_ING_VLAN:
3566 if (veth->h_vlan_proto == htons(ETH_P_8021Q))
3567 return ~ntohs(veth->h_vlan_TCI) >>
3568 (VLAN_PRIO_SHIFT + 1) & 3;
3569 break;
3570 default:
3571 break;
3572 }
3573 return card->qdio.default_out_queue;
3574 }
3575 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3576
3577
3578
3579
3580
3581
3582
3583
3584 static int qeth_get_elements_for_frags(struct sk_buff *skb)
3585 {
3586 int cnt, elements = 0;
3587
3588 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3589 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3590
3591 elements += qeth_get_elements_for_range(
3592 (addr_t)skb_frag_address(frag),
3593 (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3594 }
3595 return elements;
3596 }
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607 unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset)
3608 {
3609 unsigned int elements = qeth_get_elements_for_frags(skb);
3610 addr_t end = (addr_t)skb->data + skb_headlen(skb);
3611 addr_t start = (addr_t)skb->data + data_offset;
3612
3613 if (start != end)
3614 elements += qeth_get_elements_for_range(start, end);
3615 return elements;
3616 }
3617 EXPORT_SYMBOL_GPL(qeth_count_elements);
3618
3619 #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \
3620 MAX_TCP_HEADER)
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637 static int qeth_add_hw_header(struct qeth_qdio_out_q *queue,
3638 struct sk_buff *skb, struct qeth_hdr **hdr,
3639 unsigned int hdr_len, unsigned int proto_len,
3640 unsigned int *elements)
3641 {
3642 const unsigned int contiguous = proto_len ? proto_len : 1;
3643 const unsigned int max_elements = queue->max_elements;
3644 unsigned int __elements;
3645 addr_t start, end;
3646 bool push_ok;
3647 int rc;
3648
3649 check_layout:
3650 start = (addr_t)skb->data - hdr_len;
3651 end = (addr_t)skb->data;
3652
3653 if (qeth_get_elements_for_range(start, end + contiguous) == 1) {
3654
3655 push_ok = true;
3656
3657 if (skb_is_gso(skb))
3658 __elements = 1 + qeth_count_elements(skb, proto_len);
3659 else
3660 __elements = qeth_count_elements(skb, 0);
3661 } else if (!proto_len && PAGE_ALIGNED(skb->data)) {
3662
3663 push_ok = true;
3664 __elements = 1 + qeth_count_elements(skb, 0);
3665 } else {
3666
3667 push_ok = false;
3668 __elements = 1 + qeth_count_elements(skb, proto_len);
3669 }
3670
3671
3672 if (__elements > max_elements) {
3673 if (!skb_is_nonlinear(skb)) {
3674
3675 QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n",
3676 max_elements, __elements, skb->len);
3677 return -E2BIG;
3678 }
3679
3680 rc = skb_linearize(skb);
3681 if (rc) {
3682 QETH_TXQ_STAT_INC(queue, skbs_linearized_fail);
3683 return rc;
3684 }
3685
3686 QETH_TXQ_STAT_INC(queue, skbs_linearized);
3687
3688 goto check_layout;
3689 }
3690
3691 *elements = __elements;
3692
3693 if (push_ok) {
3694 *hdr = skb_push(skb, hdr_len);
3695 return hdr_len;
3696 }
3697
3698 if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
3699 return -E2BIG;
3700 *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3701 if (!*hdr)
3702 return -ENOMEM;
3703
3704 skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len);
3705 return 0;
3706 }
3707
3708 static bool qeth_iqd_may_bulk(struct qeth_qdio_out_q *queue,
3709 struct qeth_qdio_out_buffer *buffer,
3710 struct sk_buff *curr_skb,
3711 struct qeth_hdr *curr_hdr)
3712 {
3713 struct qeth_hdr *prev_hdr = queue->prev_hdr;
3714
3715 if (!prev_hdr)
3716 return true;
3717
3718
3719 if (curr_hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) {
3720 struct sk_buff *prev_skb = skb_peek(&buffer->skb_list);
3721
3722 return ether_addr_equal(eth_hdr(prev_skb)->h_dest,
3723 eth_hdr(curr_skb)->h_dest) &&
3724 qeth_l2_same_vlan(&prev_hdr->hdr.l2, &curr_hdr->hdr.l2);
3725 }
3726
3727 return qeth_l3_same_next_hop(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3) &&
3728 qeth_l3_iqd_same_vlan(&prev_hdr->hdr.l3, &curr_hdr->hdr.l3);
3729 }
3730
3731 static unsigned int __qeth_fill_buffer(struct sk_buff *skb,
3732 struct qeth_qdio_out_buffer *buf,
3733 bool is_first_elem, unsigned int offset)
3734 {
3735 struct qdio_buffer *buffer = buf->buffer;
3736 int element = buf->next_element_to_fill;
3737 int length = skb_headlen(skb) - offset;
3738 char *data = skb->data + offset;
3739 unsigned int elem_length, cnt;
3740
3741
3742 while (length > 0) {
3743 elem_length = min_t(unsigned int, length,
3744 PAGE_SIZE - offset_in_page(data));
3745
3746 buffer->element[element].addr = data;
3747 buffer->element[element].length = elem_length;
3748 length -= elem_length;
3749 if (is_first_elem) {
3750 is_first_elem = false;
3751 if (length || skb_is_nonlinear(skb))
3752
3753 buffer->element[element].eflags =
3754 SBAL_EFLAGS_FIRST_FRAG;
3755 else
3756 buffer->element[element].eflags = 0;
3757 } else {
3758 buffer->element[element].eflags =
3759 SBAL_EFLAGS_MIDDLE_FRAG;
3760 }
3761
3762 data += elem_length;
3763 element++;
3764 }
3765
3766
3767 for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3768 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3769
3770 data = skb_frag_address(frag);
3771 length = skb_frag_size(frag);
3772 while (length > 0) {
3773 elem_length = min_t(unsigned int, length,
3774 PAGE_SIZE - offset_in_page(data));
3775
3776 buffer->element[element].addr = data;
3777 buffer->element[element].length = elem_length;
3778 buffer->element[element].eflags =
3779 SBAL_EFLAGS_MIDDLE_FRAG;
3780
3781 length -= elem_length;
3782 data += elem_length;
3783 element++;
3784 }
3785 }
3786
3787 if (buffer->element[element - 1].eflags)
3788 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
3789 buf->next_element_to_fill = element;
3790 return element;
3791 }
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802 static unsigned int qeth_fill_buffer(struct qeth_qdio_out_buffer *buf,
3803 struct sk_buff *skb, struct qeth_hdr *hdr,
3804 unsigned int offset, unsigned int hd_len)
3805 {
3806 struct qdio_buffer *buffer = buf->buffer;
3807 bool is_first_elem = true;
3808
3809 __skb_queue_tail(&buf->skb_list, skb);
3810
3811
3812 if (hd_len) {
3813 int element = buf->next_element_to_fill;
3814 is_first_elem = false;
3815
3816 buffer->element[element].addr = hdr;
3817 buffer->element[element].length = hd_len;
3818 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3819
3820 buf->is_header[element] = ((void *)hdr != skb->data);
3821 buf->next_element_to_fill++;
3822 }
3823
3824 return __qeth_fill_buffer(skb, buf, is_first_elem, offset);
3825 }
3826
3827 static int __qeth_xmit(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3828 struct sk_buff *skb, unsigned int elements,
3829 struct qeth_hdr *hdr, unsigned int offset,
3830 unsigned int hd_len)
3831 {
3832 struct qeth_qdio_out_buffer *buffer = queue->bufs[queue->bulk_start];
3833 unsigned int bytes = qdisc_pkt_len(skb);
3834 unsigned int next_element;
3835 struct netdev_queue *txq;
3836 bool stopped = false;
3837 bool flush;
3838
3839 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3840
3841
3842
3843
3844 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3845 return -EBUSY;
3846
3847 if ((buffer->next_element_to_fill + elements > queue->max_elements) ||
3848 !qeth_iqd_may_bulk(queue, buffer, skb, hdr)) {
3849 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3850 qeth_flush_queue(queue);
3851 buffer = queue->bufs[queue->bulk_start];
3852
3853
3854 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
3855 return -EBUSY;
3856 }
3857
3858 if (buffer->next_element_to_fill == 0 &&
3859 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3860
3861
3862
3863 QETH_TXQ_STAT_INC(queue, stopped);
3864 netif_tx_stop_queue(txq);
3865 stopped = true;
3866 }
3867
3868 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
3869 buffer->bytes += bytes;
3870 queue->prev_hdr = hdr;
3871
3872 flush = __netdev_tx_sent_queue(txq, bytes,
3873 !stopped && netdev_xmit_more());
3874
3875 if (flush || next_element >= queue->max_elements) {
3876 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3877 qeth_flush_queue(queue);
3878 }
3879
3880 if (stopped && !qeth_out_queue_is_full(queue))
3881 netif_tx_start_queue(txq);
3882 return 0;
3883 }
3884
3885 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
3886 struct sk_buff *skb, struct qeth_hdr *hdr,
3887 unsigned int offset, unsigned int hd_len,
3888 int elements_needed)
3889 {
3890 struct qeth_qdio_out_buffer *buffer;
3891 unsigned int next_element;
3892 struct netdev_queue *txq;
3893 bool stopped = false;
3894 int start_index;
3895 int flush_count = 0;
3896 int do_pack = 0;
3897 int tmp;
3898 int rc = 0;
3899
3900
3901 while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
3902 QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
3903 start_index = queue->next_buf_to_fill;
3904 buffer = queue->bufs[queue->next_buf_to_fill];
3905
3906
3907
3908
3909 if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
3910 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3911 return -EBUSY;
3912 }
3913
3914 txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb));
3915
3916
3917 qeth_switch_to_packing_if_needed(queue);
3918 if (queue->do_pack) {
3919 do_pack = 1;
3920
3921 if (buffer->next_element_to_fill + elements_needed >
3922 queue->max_elements) {
3923
3924 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3925 flush_count++;
3926 queue->next_buf_to_fill =
3927 (queue->next_buf_to_fill + 1) %
3928 QDIO_MAX_BUFFERS_PER_Q;
3929 buffer = queue->bufs[queue->next_buf_to_fill];
3930
3931
3932 if (atomic_read(&buffer->state) !=
3933 QETH_QDIO_BUF_EMPTY) {
3934 qeth_flush_buffers(queue, start_index,
3935 flush_count);
3936 atomic_set(&queue->state,
3937 QETH_OUT_Q_UNLOCKED);
3938 rc = -EBUSY;
3939 goto out;
3940 }
3941 }
3942 }
3943
3944 if (buffer->next_element_to_fill == 0 &&
3945 atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) {
3946
3947
3948
3949 QETH_TXQ_STAT_INC(queue, stopped);
3950 netif_tx_stop_queue(txq);
3951 stopped = true;
3952 }
3953
3954 next_element = qeth_fill_buffer(buffer, skb, hdr, offset, hd_len);
3955
3956 if (queue->do_pack)
3957 QETH_TXQ_STAT_INC(queue, skbs_pack);
3958 if (!queue->do_pack || stopped || next_element >= queue->max_elements) {
3959 flush_count++;
3960 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3961 queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
3962 QDIO_MAX_BUFFERS_PER_Q;
3963 }
3964
3965 if (flush_count)
3966 qeth_flush_buffers(queue, start_index, flush_count);
3967 else if (!atomic_read(&queue->set_pci_flags_count))
3968 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
3969
3970
3971
3972
3973
3974
3975 while (atomic_dec_return(&queue->state)) {
3976 start_index = queue->next_buf_to_fill;
3977
3978 tmp = qeth_switch_to_nonpacking_if_needed(queue);
3979
3980
3981
3982
3983 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
3984 tmp = qeth_prep_flush_pack_buffer(queue);
3985 if (tmp) {
3986 qeth_flush_buffers(queue, start_index, tmp);
3987 flush_count += tmp;
3988 }
3989 }
3990 out:
3991
3992 if (do_pack)
3993 QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count);
3994
3995 if (stopped && !qeth_out_queue_is_full(queue))
3996 netif_tx_start_queue(txq);
3997 return rc;
3998 }
3999 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4000
4001 static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr,
4002 unsigned int payload_len, struct sk_buff *skb,
4003 unsigned int proto_len)
4004 {
4005 struct qeth_hdr_ext_tso *ext = &hdr->ext;
4006
4007 ext->hdr_tot_len = sizeof(*ext);
4008 ext->imb_hdr_no = 1;
4009 ext->hdr_type = 1;
4010 ext->hdr_version = 1;
4011 ext->hdr_len = 28;
4012 ext->payload_len = payload_len;
4013 ext->mss = skb_shinfo(skb)->gso_size;
4014 ext->dg_hdr_len = proto_len;
4015 }
4016
4017 int qeth_xmit(struct qeth_card *card, struct sk_buff *skb,
4018 struct qeth_qdio_out_q *queue, int ipv,
4019 void (*fill_header)(struct qeth_qdio_out_q *queue,
4020 struct qeth_hdr *hdr, struct sk_buff *skb,
4021 int ipv, unsigned int data_len))
4022 {
4023 unsigned int proto_len, hw_hdr_len;
4024 unsigned int frame_len = skb->len;
4025 bool is_tso = skb_is_gso(skb);
4026 unsigned int data_offset = 0;
4027 struct qeth_hdr *hdr = NULL;
4028 unsigned int hd_len = 0;
4029 unsigned int elements;
4030 int push_len, rc;
4031
4032 if (is_tso) {
4033 hw_hdr_len = sizeof(struct qeth_hdr_tso);
4034 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
4035 } else {
4036 hw_hdr_len = sizeof(struct qeth_hdr);
4037 proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0;
4038 }
4039
4040 rc = skb_cow_head(skb, hw_hdr_len);
4041 if (rc)
4042 return rc;
4043
4044 push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len,
4045 &elements);
4046 if (push_len < 0)
4047 return push_len;
4048 if (is_tso || !push_len) {
4049
4050 hd_len = hw_hdr_len + proto_len;
4051 data_offset = push_len + proto_len;
4052 }
4053 memset(hdr, 0, hw_hdr_len);
4054 fill_header(queue, hdr, skb, ipv, frame_len);
4055 if (is_tso)
4056 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr,
4057 frame_len - proto_len, skb, proto_len);
4058
4059 if (IS_IQD(card)) {
4060 rc = __qeth_xmit(card, queue, skb, elements, hdr, data_offset,
4061 hd_len);
4062 } else {
4063
4064 skb_orphan(skb);
4065 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset,
4066 hd_len, elements);
4067 }
4068
4069 if (rc && !push_len)
4070 kmem_cache_free(qeth_core_header_cache, hdr);
4071
4072 return rc;
4073 }
4074 EXPORT_SYMBOL_GPL(qeth_xmit);
4075
4076 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4077 struct qeth_reply *reply, unsigned long data)
4078 {
4079 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4080 struct qeth_ipacmd_setadpparms *setparms;
4081
4082 QETH_CARD_TEXT(card, 4, "prmadpcb");
4083
4084 setparms = &(cmd->data.setadapterparms);
4085 if (qeth_setadpparms_inspect_rc(cmd)) {
4086 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4087 setparms->data.mode = SET_PROMISC_MODE_OFF;
4088 }
4089 card->info.promisc_mode = setparms->data.mode;
4090 return (cmd->hdr.return_code) ? -EIO : 0;
4091 }
4092
4093 void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
4094 {
4095 enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
4096 SET_PROMISC_MODE_OFF;
4097 struct qeth_cmd_buffer *iob;
4098 struct qeth_ipa_cmd *cmd;
4099
4100 QETH_CARD_TEXT(card, 4, "setprom");
4101 QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4102
4103 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4104 SETADP_DATA_SIZEOF(mode));
4105 if (!iob)
4106 return;
4107 cmd = __ipa_cmd(iob);
4108 cmd->data.setadapterparms.data.mode = mode;
4109 qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4110 }
4111 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4112
4113 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4114 struct qeth_reply *reply, unsigned long data)
4115 {
4116 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4117 struct qeth_ipacmd_setadpparms *adp_cmd;
4118
4119 QETH_CARD_TEXT(card, 4, "chgmaccb");
4120 if (qeth_setadpparms_inspect_rc(cmd))
4121 return -EIO;
4122
4123 adp_cmd = &cmd->data.setadapterparms;
4124 if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr))
4125 return -EADDRNOTAVAIL;
4126
4127 if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) &&
4128 !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC))
4129 return -EADDRNOTAVAIL;
4130
4131 ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr);
4132 return 0;
4133 }
4134
4135 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4136 {
4137 int rc;
4138 struct qeth_cmd_buffer *iob;
4139 struct qeth_ipa_cmd *cmd;
4140
4141 QETH_CARD_TEXT(card, 4, "chgmac");
4142
4143 iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4144 SETADP_DATA_SIZEOF(change_addr));
4145 if (!iob)
4146 return -ENOMEM;
4147 cmd = __ipa_cmd(iob);
4148 cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4149 cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4150 ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4151 card->dev->dev_addr);
4152 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4153 NULL);
4154 return rc;
4155 }
4156 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4157
4158 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4159 struct qeth_reply *reply, unsigned long data)
4160 {
4161 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4162 struct qeth_set_access_ctrl *access_ctrl_req;
4163 int fallback = *(int *)reply->param;
4164
4165 QETH_CARD_TEXT(card, 4, "setaccb");
4166 if (cmd->hdr.return_code)
4167 return -EIO;
4168 qeth_setadpparms_inspect_rc(cmd);
4169
4170 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4171 QETH_CARD_TEXT_(card, 2, "rc=%d",
4172 cmd->data.setadapterparms.hdr.return_code);
4173 if (cmd->data.setadapterparms.hdr.return_code !=
4174 SET_ACCESS_CTRL_RC_SUCCESS)
4175 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n",
4176 access_ctrl_req->subcmd_code, CARD_DEVID(card),
4177 cmd->data.setadapterparms.hdr.return_code);
4178 switch (cmd->data.setadapterparms.hdr.return_code) {
4179 case SET_ACCESS_CTRL_RC_SUCCESS:
4180 if (card->options.isolation == ISOLATION_MODE_NONE) {
4181 dev_info(&card->gdev->dev,
4182 "QDIO data connection isolation is deactivated\n");
4183 } else {
4184 dev_info(&card->gdev->dev,
4185 "QDIO data connection isolation is activated\n");
4186 }
4187 break;
4188 case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4189 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n",
4190 CARD_DEVID(card));
4191 if (fallback)
4192 card->options.isolation = card->options.prev_isolation;
4193 break;
4194 case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4195 QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n",
4196 CARD_DEVID(card));
4197 if (fallback)
4198 card->options.isolation = card->options.prev_isolation;
4199 break;
4200 case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4201 dev_err(&card->gdev->dev, "Adapter does not "
4202 "support QDIO data connection isolation\n");
4203 break;
4204 case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4205 dev_err(&card->gdev->dev,
4206 "Adapter is dedicated. "
4207 "QDIO data connection isolation not supported\n");
4208 if (fallback)
4209 card->options.isolation = card->options.prev_isolation;
4210 break;
4211 case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4212 dev_err(&card->gdev->dev,
4213 "TSO does not permit QDIO data connection isolation\n");
4214 if (fallback)
4215 card->options.isolation = card->options.prev_isolation;
4216 break;
4217 case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4218 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4219 "support reflective relay mode\n");
4220 if (fallback)
4221 card->options.isolation = card->options.prev_isolation;
4222 break;
4223 case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4224 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4225 "enabled at the adjacent switch port");
4226 if (fallback)
4227 card->options.isolation = card->options.prev_isolation;
4228 break;
4229 case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4230 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4231 "at the adjacent switch failed\n");
4232 break;
4233 default:
4234
4235 if (fallback)
4236 card->options.isolation = card->options.prev_isolation;
4237 break;
4238 }
4239 return (cmd->hdr.return_code) ? -EIO : 0;
4240 }
4241
4242 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4243 enum qeth_ipa_isolation_modes isolation, int fallback)
4244 {
4245 int rc;
4246 struct qeth_cmd_buffer *iob;
4247 struct qeth_ipa_cmd *cmd;
4248 struct qeth_set_access_ctrl *access_ctrl_req;
4249
4250 QETH_CARD_TEXT(card, 4, "setacctl");
4251
4252 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4253 SETADP_DATA_SIZEOF(set_access_ctrl));
4254 if (!iob)
4255 return -ENOMEM;
4256 cmd = __ipa_cmd(iob);
4257 access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4258 access_ctrl_req->subcmd_code = isolation;
4259
4260 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4261 &fallback);
4262 QETH_CARD_TEXT_(card, 2, "rc=%d", rc);
4263 return rc;
4264 }
4265
4266 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4267 {
4268 int rc = 0;
4269
4270 QETH_CARD_TEXT(card, 4, "setactlo");
4271
4272 if ((IS_OSD(card) || IS_OSX(card)) &&
4273 qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4274 rc = qeth_setadpparms_set_access_ctrl(card,
4275 card->options.isolation, fallback);
4276 if (rc) {
4277 QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n",
4278 rc, CARD_DEVID(card));
4279 rc = -EOPNOTSUPP;
4280 }
4281 } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4282 card->options.isolation = ISOLATION_MODE_NONE;
4283
4284 dev_err(&card->gdev->dev, "Adapter does not "
4285 "support QDIO data connection isolation\n");
4286 rc = -EOPNOTSUPP;
4287 }
4288 return rc;
4289 }
4290 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4291
4292 void qeth_tx_timeout(struct net_device *dev)
4293 {
4294 struct qeth_card *card;
4295
4296 card = dev->ml_priv;
4297 QETH_CARD_TEXT(card, 4, "txtimeo");
4298 qeth_schedule_recovery(card);
4299 }
4300 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4301
4302 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4303 {
4304 struct qeth_card *card = dev->ml_priv;
4305 int rc = 0;
4306
4307 switch (regnum) {
4308 case MII_BMCR:
4309 rc = BMCR_FULLDPLX;
4310 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4311 (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4312 (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH) &&
4313 (card->info.link_type != QETH_LINK_TYPE_25GBIT_ETH))
4314 rc |= BMCR_SPEED100;
4315 break;
4316 case MII_BMSR:
4317 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4318 BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4319 BMSR_100BASE4;
4320 break;
4321 case MII_PHYSID1:
4322 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4323 dev->dev_addr[2];
4324 rc = (rc >> 5) & 0xFFFF;
4325 break;
4326 case MII_PHYSID2:
4327 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4328 break;
4329 case MII_ADVERTISE:
4330 rc = ADVERTISE_ALL;
4331 break;
4332 case MII_LPA:
4333 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4334 LPA_100BASE4 | LPA_LPACK;
4335 break;
4336 case MII_EXPANSION:
4337 break;
4338 case MII_DCOUNTER:
4339 break;
4340 case MII_FCSCOUNTER:
4341 break;
4342 case MII_NWAYTEST:
4343 break;
4344 case MII_RERRCOUNTER:
4345 rc = card->stats.rx_errors;
4346 break;
4347 case MII_SREVISION:
4348 break;
4349 case MII_RESV1:
4350 break;
4351 case MII_LBRERROR:
4352 break;
4353 case MII_PHYADDR:
4354 break;
4355 case MII_RESV2:
4356 break;
4357 case MII_TPISTATUS:
4358 break;
4359 case MII_NCONFIG:
4360 break;
4361 default:
4362 break;
4363 }
4364 return rc;
4365 }
4366
4367 static int qeth_snmp_command_cb(struct qeth_card *card,
4368 struct qeth_reply *reply, unsigned long data)
4369 {
4370 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4371 struct qeth_arp_query_info *qinfo = reply->param;
4372 struct qeth_ipacmd_setadpparms *adp_cmd;
4373 unsigned int data_len;
4374 void *snmp_data;
4375
4376 QETH_CARD_TEXT(card, 3, "snpcmdcb");
4377
4378 if (cmd->hdr.return_code) {
4379 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4380 return -EIO;
4381 }
4382 if (cmd->data.setadapterparms.hdr.return_code) {
4383 cmd->hdr.return_code =
4384 cmd->data.setadapterparms.hdr.return_code;
4385 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4386 return -EIO;
4387 }
4388
4389 adp_cmd = &cmd->data.setadapterparms;
4390 data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
4391 if (adp_cmd->hdr.seq_no == 1) {
4392 snmp_data = &adp_cmd->data.snmp;
4393 } else {
4394 snmp_data = &adp_cmd->data.snmp.request;
4395 data_len -= offsetof(struct qeth_snmp_cmd, request);
4396 }
4397
4398
4399 if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4400 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC);
4401 return -ENOSPC;
4402 }
4403 QETH_CARD_TEXT_(card, 4, "snore%i",
4404 cmd->data.setadapterparms.hdr.used_total);
4405 QETH_CARD_TEXT_(card, 4, "sseqn%i",
4406 cmd->data.setadapterparms.hdr.seq_no);
4407
4408 memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, data_len);
4409 qinfo->udata_offset += data_len;
4410
4411 if (cmd->data.setadapterparms.hdr.seq_no <
4412 cmd->data.setadapterparms.hdr.used_total)
4413 return 1;
4414 return 0;
4415 }
4416
4417 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4418 {
4419 struct qeth_snmp_ureq __user *ureq;
4420 struct qeth_cmd_buffer *iob;
4421 unsigned int req_len;
4422 struct qeth_arp_query_info qinfo = {0, };
4423 int rc = 0;
4424
4425 QETH_CARD_TEXT(card, 3, "snmpcmd");
4426
4427 if (IS_VM_NIC(card))
4428 return -EOPNOTSUPP;
4429
4430 if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4431 IS_LAYER3(card))
4432 return -EOPNOTSUPP;
4433
4434 ureq = (struct qeth_snmp_ureq __user *) udata;
4435 if (get_user(qinfo.udata_len, &ureq->hdr.data_len) ||
4436 get_user(req_len, &ureq->hdr.req_len))
4437 return -EFAULT;
4438
4439
4440 if (req_len > QETH_BUFSIZE)
4441 return -EINVAL;
4442
4443 iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
4444 if (!iob)
4445 return -ENOMEM;
4446
4447 if (copy_from_user(&__ipa_cmd(iob)->data.setadapterparms.data.snmp,
4448 &ureq->cmd, req_len)) {
4449 qeth_put_cmd(iob);
4450 return -EFAULT;
4451 }
4452
4453 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4454 if (!qinfo.udata) {
4455 qeth_put_cmd(iob);
4456 return -ENOMEM;
4457 }
4458 qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4459
4460 rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
4461 if (rc)
4462 QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n",
4463 CARD_DEVID(card), rc);
4464 else {
4465 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4466 rc = -EFAULT;
4467 }
4468
4469 kfree(qinfo.udata);
4470 return rc;
4471 }
4472
4473 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4474 struct qeth_reply *reply, unsigned long data)
4475 {
4476 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4477 struct qeth_qoat_priv *priv;
4478 char *resdata;
4479 int resdatalen;
4480
4481 QETH_CARD_TEXT(card, 3, "qoatcb");
4482 if (qeth_setadpparms_inspect_rc(cmd))
4483 return -EIO;
4484
4485 priv = (struct qeth_qoat_priv *)reply->param;
4486 resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4487 resdata = (char *)data + 28;
4488
4489 if (resdatalen > (priv->buffer_len - priv->response_len))
4490 return -ENOSPC;
4491
4492 memcpy((priv->buffer + priv->response_len), resdata,
4493 resdatalen);
4494 priv->response_len += resdatalen;
4495
4496 if (cmd->data.setadapterparms.hdr.seq_no <
4497 cmd->data.setadapterparms.hdr.used_total)
4498 return 1;
4499 return 0;
4500 }
4501
4502 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4503 {
4504 int rc = 0;
4505 struct qeth_cmd_buffer *iob;
4506 struct qeth_ipa_cmd *cmd;
4507 struct qeth_query_oat *oat_req;
4508 struct qeth_query_oat_data oat_data;
4509 struct qeth_qoat_priv priv;
4510 void __user *tmp;
4511
4512 QETH_CARD_TEXT(card, 3, "qoatcmd");
4513
4514 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4515 rc = -EOPNOTSUPP;
4516 goto out;
4517 }
4518
4519 if (copy_from_user(&oat_data, udata,
4520 sizeof(struct qeth_query_oat_data))) {
4521 rc = -EFAULT;
4522 goto out;
4523 }
4524
4525 priv.buffer_len = oat_data.buffer_len;
4526 priv.response_len = 0;
4527 priv.buffer = vzalloc(oat_data.buffer_len);
4528 if (!priv.buffer) {
4529 rc = -ENOMEM;
4530 goto out;
4531 }
4532
4533 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4534 SETADP_DATA_SIZEOF(query_oat));
4535 if (!iob) {
4536 rc = -ENOMEM;
4537 goto out_free;
4538 }
4539 cmd = __ipa_cmd(iob);
4540 oat_req = &cmd->data.setadapterparms.data.query_oat;
4541 oat_req->subcmd_code = oat_data.command;
4542
4543 rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4544 &priv);
4545 if (!rc) {
4546 if (is_compat_task())
4547 tmp = compat_ptr(oat_data.ptr);
4548 else
4549 tmp = (void __user *)(unsigned long)oat_data.ptr;
4550
4551 if (copy_to_user(tmp, priv.buffer,
4552 priv.response_len)) {
4553 rc = -EFAULT;
4554 goto out_free;
4555 }
4556
4557 oat_data.response_len = priv.response_len;
4558
4559 if (copy_to_user(udata, &oat_data,
4560 sizeof(struct qeth_query_oat_data)))
4561 rc = -EFAULT;
4562 }
4563
4564 out_free:
4565 vfree(priv.buffer);
4566 out:
4567 return rc;
4568 }
4569
4570 static int qeth_query_card_info_cb(struct qeth_card *card,
4571 struct qeth_reply *reply, unsigned long data)
4572 {
4573 struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4574 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4575 struct qeth_query_card_info *card_info;
4576
4577 QETH_CARD_TEXT(card, 2, "qcrdincb");
4578 if (qeth_setadpparms_inspect_rc(cmd))
4579 return -EIO;
4580
4581 card_info = &cmd->data.setadapterparms.data.card_info;
4582 carrier_info->card_type = card_info->card_type;
4583 carrier_info->port_mode = card_info->port_mode;
4584 carrier_info->port_speed = card_info->port_speed;
4585 return 0;
4586 }
4587
4588 int qeth_query_card_info(struct qeth_card *card,
4589 struct carrier_info *carrier_info)
4590 {
4591 struct qeth_cmd_buffer *iob;
4592
4593 QETH_CARD_TEXT(card, 2, "qcrdinfo");
4594 if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4595 return -EOPNOTSUPP;
4596 iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
4597 if (!iob)
4598 return -ENOMEM;
4599 return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4600 (void *)carrier_info);
4601 }
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611 int qeth_vm_request_mac(struct qeth_card *card)
4612 {
4613 struct diag26c_mac_resp *response;
4614 struct diag26c_mac_req *request;
4615 struct ccw_dev_id id;
4616 int rc;
4617
4618 QETH_CARD_TEXT(card, 2, "vmreqmac");
4619
4620 request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4621 response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4622 if (!request || !response) {
4623 rc = -ENOMEM;
4624 goto out;
4625 }
4626
4627 ccw_device_get_id(CARD_DDEV(card), &id);
4628 request->resp_buf_len = sizeof(*response);
4629 request->resp_version = DIAG26C_VERSION2;
4630 request->op_code = DIAG26C_GET_MAC;
4631 request->devno = id.devno;
4632
4633 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4634 rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4635 QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4636 if (rc)
4637 goto out;
4638 QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4639
4640 if (request->resp_buf_len < sizeof(*response) ||
4641 response->version != request->resp_version) {
4642 rc = -EIO;
4643 QETH_CARD_TEXT(card, 2, "badresp");
4644 QETH_CARD_HEX(card, 2, &request->resp_buf_len,
4645 sizeof(request->resp_buf_len));
4646 } else if (!is_valid_ether_addr(response->mac)) {
4647 rc = -EINVAL;
4648 QETH_CARD_TEXT(card, 2, "badmac");
4649 QETH_CARD_HEX(card, 2, response->mac, ETH_ALEN);
4650 } else {
4651 ether_addr_copy(card->dev->dev_addr, response->mac);
4652 }
4653
4654 out:
4655 kfree(response);
4656 kfree(request);
4657 return rc;
4658 }
4659 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4660
4661 static void qeth_determine_capabilities(struct qeth_card *card)
4662 {
4663 struct qeth_channel *channel = &card->data;
4664 struct ccw_device *ddev = channel->ccwdev;
4665 int rc;
4666 int ddev_offline = 0;
4667
4668 QETH_CARD_TEXT(card, 2, "detcapab");
4669 if (!ddev->online) {
4670 ddev_offline = 1;
4671 rc = ccw_device_set_online(ddev);
4672 if (rc) {
4673 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4674 goto out;
4675 }
4676 }
4677
4678 rc = qeth_read_conf_data(card);
4679 if (rc) {
4680 QETH_DBF_MESSAGE(2, "qeth_read_conf_data on device %x returned %i\n",
4681 CARD_DEVID(card), rc);
4682 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4683 goto out_offline;
4684 }
4685
4686 rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4687 if (rc)
4688 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4689
4690 QETH_CARD_TEXT_(card, 2, "qfmt%d", card->ssqd.qfmt);
4691 QETH_CARD_TEXT_(card, 2, "ac1:%02x", card->ssqd.qdioac1);
4692 QETH_CARD_TEXT_(card, 2, "ac2:%04x", card->ssqd.qdioac2);
4693 QETH_CARD_TEXT_(card, 2, "ac3:%04x", card->ssqd.qdioac3);
4694 QETH_CARD_TEXT_(card, 2, "icnt%d", card->ssqd.icnt);
4695 if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4696 ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4697 ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4698 dev_info(&card->gdev->dev,
4699 "Completion Queueing supported\n");
4700 } else {
4701 card->options.cq = QETH_CQ_NOTAVAILABLE;
4702 }
4703
4704
4705 out_offline:
4706 if (ddev_offline == 1)
4707 qeth_stop_channel(channel);
4708 out:
4709 return;
4710 }
4711
4712 static void qeth_qdio_establish_cq(struct qeth_card *card,
4713 struct qdio_buffer **in_sbal_ptrs,
4714 void (**queue_start_poll)
4715 (struct ccw_device *, int,
4716 unsigned long))
4717 {
4718 int i;
4719
4720 if (card->options.cq == QETH_CQ_ENABLED) {
4721 int offset = QDIO_MAX_BUFFERS_PER_Q *
4722 (card->qdio.no_in_queues - 1);
4723
4724 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++)
4725 in_sbal_ptrs[offset + i] =
4726 card->qdio.c_q->bufs[i].buffer;
4727
4728 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4729 }
4730 }
4731
4732 static int qeth_qdio_establish(struct qeth_card *card)
4733 {
4734 struct qdio_initialize init_data;
4735 char *qib_param_field;
4736 struct qdio_buffer **in_sbal_ptrs;
4737 void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4738 struct qdio_buffer **out_sbal_ptrs;
4739 int i, j, k;
4740 int rc = 0;
4741
4742 QETH_CARD_TEXT(card, 2, "qdioest");
4743
4744 qib_param_field = kzalloc(FIELD_SIZEOF(struct qib, parm), GFP_KERNEL);
4745 if (!qib_param_field) {
4746 rc = -ENOMEM;
4747 goto out_free_nothing;
4748 }
4749
4750 qeth_create_qib_param_field(card, qib_param_field);
4751 qeth_create_qib_param_field_blkt(card, qib_param_field);
4752
4753 in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q,
4754 sizeof(void *),
4755 GFP_KERNEL);
4756 if (!in_sbal_ptrs) {
4757 rc = -ENOMEM;
4758 goto out_free_qib_param;
4759 }
4760
4761 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++)
4762 in_sbal_ptrs[i] = card->qdio.in_q->bufs[i].buffer;
4763
4764 queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *),
4765 GFP_KERNEL);
4766 if (!queue_start_poll) {
4767 rc = -ENOMEM;
4768 goto out_free_in_sbals;
4769 }
4770 for (i = 0; i < card->qdio.no_in_queues; ++i)
4771 queue_start_poll[i] = qeth_qdio_start_poll;
4772
4773 qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4774
4775 out_sbal_ptrs =
4776 kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q,
4777 sizeof(void *),
4778 GFP_KERNEL);
4779 if (!out_sbal_ptrs) {
4780 rc = -ENOMEM;
4781 goto out_free_queue_start_poll;
4782 }
4783
4784 for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
4785 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++, k++)
4786 out_sbal_ptrs[k] =
4787 card->qdio.out_qs[i]->bufs[j]->buffer;
4788
4789 memset(&init_data, 0, sizeof(struct qdio_initialize));
4790 init_data.cdev = CARD_DDEV(card);
4791 init_data.q_format = IS_IQD(card) ? QDIO_IQDIO_QFMT :
4792 QDIO_QETH_QFMT;
4793 init_data.qib_param_field_format = 0;
4794 init_data.qib_param_field = qib_param_field;
4795 init_data.no_input_qs = card->qdio.no_in_queues;
4796 init_data.no_output_qs = card->qdio.no_out_queues;
4797 init_data.input_handler = qeth_qdio_input_handler;
4798 init_data.output_handler = qeth_qdio_output_handler;
4799 init_data.queue_start_poll_array = queue_start_poll;
4800 init_data.int_parm = (unsigned long) card;
4801 init_data.input_sbal_addr_array = in_sbal_ptrs;
4802 init_data.output_sbal_addr_array = out_sbal_ptrs;
4803 init_data.output_sbal_state_array = card->qdio.out_bufstates;
4804 init_data.scan_threshold = IS_IQD(card) ? 0 : 32;
4805
4806 if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
4807 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
4808 rc = qdio_allocate(&init_data);
4809 if (rc) {
4810 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4811 goto out;
4812 }
4813 rc = qdio_establish(&init_data);
4814 if (rc) {
4815 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
4816 qdio_free(CARD_DDEV(card));
4817 }
4818 }
4819
4820 switch (card->options.cq) {
4821 case QETH_CQ_ENABLED:
4822 dev_info(&card->gdev->dev, "Completion Queue support enabled");
4823 break;
4824 case QETH_CQ_DISABLED:
4825 dev_info(&card->gdev->dev, "Completion Queue support disabled");
4826 break;
4827 default:
4828 break;
4829 }
4830 out:
4831 kfree(out_sbal_ptrs);
4832 out_free_queue_start_poll:
4833 kfree(queue_start_poll);
4834 out_free_in_sbals:
4835 kfree(in_sbal_ptrs);
4836 out_free_qib_param:
4837 kfree(qib_param_field);
4838 out_free_nothing:
4839 return rc;
4840 }
4841
4842 static void qeth_core_free_card(struct qeth_card *card)
4843 {
4844 QETH_CARD_TEXT(card, 2, "freecrd");
4845 qeth_clean_channel(&card->read);
4846 qeth_clean_channel(&card->write);
4847 qeth_clean_channel(&card->data);
4848 qeth_put_cmd(card->read_cmd);
4849 destroy_workqueue(card->event_wq);
4850 qeth_free_qdio_queues(card);
4851 unregister_service_level(&card->qeth_service_level);
4852 dev_set_drvdata(&card->gdev->dev, NULL);
4853 kfree(card);
4854 }
4855
4856 void qeth_trace_features(struct qeth_card *card)
4857 {
4858 QETH_CARD_TEXT(card, 2, "features");
4859 QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
4860 QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
4861 QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
4862 QETH_CARD_HEX(card, 2, &card->info.diagass_support,
4863 sizeof(card->info.diagass_support));
4864 }
4865 EXPORT_SYMBOL_GPL(qeth_trace_features);
4866
4867 static struct ccw_device_id qeth_ids[] = {
4868 {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
4869 .driver_info = QETH_CARD_TYPE_OSD},
4870 {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
4871 .driver_info = QETH_CARD_TYPE_IQD},
4872 {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
4873 .driver_info = QETH_CARD_TYPE_OSN},
4874 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
4875 .driver_info = QETH_CARD_TYPE_OSM},
4876 {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
4877 .driver_info = QETH_CARD_TYPE_OSX},
4878 {},
4879 };
4880 MODULE_DEVICE_TABLE(ccw, qeth_ids);
4881
4882 static struct ccw_driver qeth_ccw_driver = {
4883 .driver = {
4884 .owner = THIS_MODULE,
4885 .name = "qeth",
4886 },
4887 .ids = qeth_ids,
4888 .probe = ccwgroup_probe_ccwdev,
4889 .remove = ccwgroup_remove_ccwdev,
4890 };
4891
4892 int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok)
4893 {
4894 int retries = 3;
4895 int rc;
4896
4897 QETH_CARD_TEXT(card, 2, "hrdsetup");
4898 atomic_set(&card->force_alloc_skb, 0);
4899 rc = qeth_update_from_chp_desc(card);
4900 if (rc)
4901 return rc;
4902 retry:
4903 if (retries < 3)
4904 QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n",
4905 CARD_DEVID(card));
4906 rc = qeth_qdio_clear_card(card, !IS_IQD(card));
4907 qeth_stop_channel(&card->data);
4908 qeth_stop_channel(&card->write);
4909 qeth_stop_channel(&card->read);
4910 qdio_free(CARD_DDEV(card));
4911 rc = ccw_device_set_online(CARD_RDEV(card));
4912 if (rc)
4913 goto retriable;
4914 rc = ccw_device_set_online(CARD_WDEV(card));
4915 if (rc)
4916 goto retriable;
4917 rc = ccw_device_set_online(CARD_DDEV(card));
4918 if (rc)
4919 goto retriable;
4920 retriable:
4921 if (rc == -ERESTARTSYS) {
4922 QETH_CARD_TEXT(card, 2, "break1");
4923 return rc;
4924 } else if (rc) {
4925 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
4926 if (--retries < 0)
4927 goto out;
4928 else
4929 goto retry;
4930 }
4931 qeth_determine_capabilities(card);
4932 qeth_init_tokens(card);
4933 qeth_init_func_level(card);
4934
4935 rc = qeth_idx_activate_read_channel(card);
4936 if (rc == -EINTR) {
4937 QETH_CARD_TEXT(card, 2, "break2");
4938 return rc;
4939 } else if (rc) {
4940 QETH_CARD_TEXT_(card, 2, "3err%d", rc);
4941 if (--retries < 0)
4942 goto out;
4943 else
4944 goto retry;
4945 }
4946
4947 rc = qeth_idx_activate_write_channel(card);
4948 if (rc == -EINTR) {
4949 QETH_CARD_TEXT(card, 2, "break3");
4950 return rc;
4951 } else if (rc) {
4952 QETH_CARD_TEXT_(card, 2, "4err%d", rc);
4953 if (--retries < 0)
4954 goto out;
4955 else
4956 goto retry;
4957 }
4958 card->read_or_write_problem = 0;
4959 rc = qeth_mpc_initialize(card);
4960 if (rc) {
4961 QETH_CARD_TEXT_(card, 2, "5err%d", rc);
4962 goto out;
4963 }
4964
4965 rc = qeth_send_startlan(card);
4966 if (rc) {
4967 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
4968 if (rc == -ENETDOWN) {
4969 dev_warn(&card->gdev->dev, "The LAN is offline\n");
4970 *carrier_ok = false;
4971 } else {
4972 goto out;
4973 }
4974 } else {
4975 *carrier_ok = true;
4976 }
4977
4978 card->options.ipa4.supported_funcs = 0;
4979 card->options.ipa6.supported_funcs = 0;
4980 card->options.adp.supported_funcs = 0;
4981 card->options.sbp.supported_funcs = 0;
4982 card->info.diagass_support = 0;
4983 rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
4984 if (rc == -ENOMEM)
4985 goto out;
4986 if (qeth_is_supported(card, IPA_IPV6)) {
4987 rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
4988 if (rc == -ENOMEM)
4989 goto out;
4990 }
4991 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
4992 rc = qeth_query_setadapterparms(card);
4993 if (rc < 0) {
4994 QETH_CARD_TEXT_(card, 2, "7err%d", rc);
4995 goto out;
4996 }
4997 }
4998 if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
4999 rc = qeth_query_setdiagass(card);
5000 if (rc)
5001 QETH_CARD_TEXT_(card, 2, "8err%d", rc);
5002 }
5003 return 0;
5004 out:
5005 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5006 "an error on the device\n");
5007 QETH_DBF_MESSAGE(2, "Initialization for device %x failed in hardsetup! rc=%d\n",
5008 CARD_DEVID(card), rc);
5009 return rc;
5010 }
5011 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5012
5013 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5014 struct sk_buff *skb, int offset, int data_len)
5015 {
5016 struct page *page = virt_to_page(element->addr);
5017 unsigned int next_frag;
5018
5019
5020 if (!skb->len) {
5021 unsigned int linear = min(data_len, skb_tailroom(skb));
5022
5023 skb_put_data(skb, element->addr + offset, linear);
5024 data_len -= linear;
5025 if (!data_len)
5026 return;
5027 offset += linear;
5028
5029 }
5030
5031 next_frag = skb_shinfo(skb)->nr_frags;
5032 get_page(page);
5033 skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5034 }
5035
5036 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5037 {
5038 return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5039 }
5040
5041 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5042 struct qeth_qdio_buffer *qethbuffer,
5043 struct qdio_buffer_element **__element, int *__offset,
5044 struct qeth_hdr **hdr)
5045 {
5046 struct qdio_buffer_element *element = *__element;
5047 struct qdio_buffer *buffer = qethbuffer->buffer;
5048 int offset = *__offset;
5049 struct sk_buff *skb;
5050 int skb_len = 0;
5051 void *data_ptr;
5052 int data_len;
5053 int headroom = 0;
5054 int use_rx_sg = 0;
5055
5056
5057 while (element->length < offset + sizeof(struct qeth_hdr)) {
5058 if (qeth_is_last_sbale(element))
5059 return NULL;
5060 element++;
5061 offset = 0;
5062 }
5063 *hdr = element->addr + offset;
5064
5065 offset += sizeof(struct qeth_hdr);
5066 switch ((*hdr)->hdr.l2.id) {
5067 case QETH_HEADER_TYPE_LAYER2:
5068 skb_len = (*hdr)->hdr.l2.pkt_length;
5069 break;
5070 case QETH_HEADER_TYPE_LAYER3:
5071 skb_len = (*hdr)->hdr.l3.length;
5072 headroom = ETH_HLEN;
5073 break;
5074 case QETH_HEADER_TYPE_OSN:
5075 skb_len = (*hdr)->hdr.osn.pdu_length;
5076 headroom = sizeof(struct qeth_hdr);
5077 break;
5078 default:
5079 break;
5080 }
5081
5082 if (!skb_len)
5083 return NULL;
5084
5085 if (((skb_len >= card->options.rx_sg_cb) &&
5086 !IS_OSN(card) &&
5087 (!atomic_read(&card->force_alloc_skb))) ||
5088 (card->options.cq == QETH_CQ_ENABLED))
5089 use_rx_sg = 1;
5090
5091 if (use_rx_sg && qethbuffer->rx_skb) {
5092
5093 skb = qethbuffer->rx_skb;
5094 qethbuffer->rx_skb = NULL;
5095 } else {
5096 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5097
5098 skb = napi_alloc_skb(&card->napi, linear + headroom);
5099 }
5100 if (!skb)
5101 goto no_mem;
5102 if (headroom)
5103 skb_reserve(skb, headroom);
5104
5105 data_ptr = element->addr + offset;
5106 while (skb_len) {
5107 data_len = min(skb_len, (int)(element->length - offset));
5108 if (data_len) {
5109 if (use_rx_sg)
5110 qeth_create_skb_frag(element, skb, offset,
5111 data_len);
5112 else
5113 skb_put_data(skb, data_ptr, data_len);
5114 }
5115 skb_len -= data_len;
5116 if (skb_len) {
5117 if (qeth_is_last_sbale(element)) {
5118 QETH_CARD_TEXT(card, 4, "unexeob");
5119 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5120 dev_kfree_skb_any(skb);
5121 QETH_CARD_STAT_INC(card, rx_errors);
5122 return NULL;
5123 }
5124 element++;
5125 offset = 0;
5126 data_ptr = element->addr;
5127 } else {
5128 offset += data_len;
5129 }
5130 }
5131 *__element = element;
5132 *__offset = offset;
5133 if (use_rx_sg) {
5134 QETH_CARD_STAT_INC(card, rx_sg_skbs);
5135 QETH_CARD_STAT_ADD(card, rx_sg_frags,
5136 skb_shinfo(skb)->nr_frags);
5137 }
5138 return skb;
5139 no_mem:
5140 if (net_ratelimit()) {
5141 QETH_CARD_TEXT(card, 2, "noskbmem");
5142 }
5143 QETH_CARD_STAT_INC(card, rx_dropped);
5144 return NULL;
5145 }
5146 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5147
5148 int qeth_poll(struct napi_struct *napi, int budget)
5149 {
5150 struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5151 int work_done = 0;
5152 struct qeth_qdio_buffer *buffer;
5153 int done;
5154 int new_budget = budget;
5155
5156 while (1) {
5157 if (!card->rx.b_count) {
5158 card->rx.qdio_err = 0;
5159 card->rx.b_count = qdio_get_next_buffers(
5160 card->data.ccwdev, 0, &card->rx.b_index,
5161 &card->rx.qdio_err);
5162 if (card->rx.b_count <= 0) {
5163 card->rx.b_count = 0;
5164 break;
5165 }
5166 card->rx.b_element =
5167 &card->qdio.in_q->bufs[card->rx.b_index]
5168 .buffer->element[0];
5169 card->rx.e_offset = 0;
5170 }
5171
5172 while (card->rx.b_count) {
5173 buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5174 if (!(card->rx.qdio_err &&
5175 qeth_check_qdio_errors(card, buffer->buffer,
5176 card->rx.qdio_err, "qinerr")))
5177 work_done +=
5178 card->discipline->process_rx_buffer(
5179 card, new_budget, &done);
5180 else
5181 done = 1;
5182
5183 if (done) {
5184 QETH_CARD_STAT_INC(card, rx_bufs);
5185 qeth_put_buffer_pool_entry(card,
5186 buffer->pool_entry);
5187 qeth_queue_input_buffer(card, card->rx.b_index);
5188 card->rx.b_count--;
5189 if (card->rx.b_count) {
5190 card->rx.b_index =
5191 (card->rx.b_index + 1) %
5192 QDIO_MAX_BUFFERS_PER_Q;
5193 card->rx.b_element =
5194 &card->qdio.in_q
5195 ->bufs[card->rx.b_index]
5196 .buffer->element[0];
5197 card->rx.e_offset = 0;
5198 }
5199 }
5200
5201 if (work_done >= budget)
5202 goto out;
5203 else
5204 new_budget = budget - work_done;
5205 }
5206 }
5207
5208 napi_complete_done(napi, work_done);
5209 if (qdio_start_irq(card->data.ccwdev, 0))
5210 napi_schedule(&card->napi);
5211 out:
5212 return work_done;
5213 }
5214 EXPORT_SYMBOL_GPL(qeth_poll);
5215
5216 static void qeth_iqd_tx_complete(struct qeth_qdio_out_q *queue,
5217 unsigned int bidx, bool error, int budget)
5218 {
5219 struct qeth_qdio_out_buffer *buffer = queue->bufs[bidx];
5220 u8 sflags = buffer->buffer->element[15].sflags;
5221 struct qeth_card *card = queue->card;
5222
5223 if (queue->bufstates && (queue->bufstates[bidx].flags &
5224 QDIO_OUTBUF_STATE_FLAG_PENDING)) {
5225 WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
5226
5227 if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
5228 QETH_QDIO_BUF_PENDING) ==
5229 QETH_QDIO_BUF_PRIMED)
5230 qeth_notify_skbs(queue, buffer, TX_NOTIFY_PENDING);
5231
5232 QETH_CARD_TEXT_(card, 5, "pel%u", bidx);
5233
5234
5235 qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements);
5236 if (qeth_init_qdio_out_buf(queue, bidx)) {
5237 QETH_CARD_TEXT(card, 2, "outofbuf");
5238 qeth_schedule_recovery(card);
5239 }
5240
5241 return;
5242 }
5243
5244 if (card->options.cq == QETH_CQ_ENABLED)
5245 qeth_notify_skbs(queue, buffer,
5246 qeth_compute_cq_notification(sflags, 0));
5247 qeth_clear_output_buffer(queue, buffer, error, budget);
5248 }
5249
5250 static int qeth_tx_poll(struct napi_struct *napi, int budget)
5251 {
5252 struct qeth_qdio_out_q *queue = qeth_napi_to_out_queue(napi);
5253 unsigned int queue_no = queue->queue_no;
5254 struct qeth_card *card = queue->card;
5255 struct net_device *dev = card->dev;
5256 unsigned int work_done = 0;
5257 struct netdev_queue *txq;
5258
5259 txq = netdev_get_tx_queue(dev, qeth_iqd_translate_txq(dev, queue_no));
5260
5261 while (1) {
5262 unsigned int start, error, i;
5263 unsigned int packets = 0;
5264 unsigned int bytes = 0;
5265 int completed;
5266
5267 if (qeth_out_queue_is_empty(queue)) {
5268 napi_complete(napi);
5269 return 0;
5270 }
5271
5272
5273 if (work_done >= QDIO_MAX_BUFFERS_PER_Q) {
5274 QETH_TXQ_STAT_INC(queue, completion_yield);
5275 if (napi_complete_done(napi, 0))
5276 napi_schedule(napi);
5277 return 0;
5278 }
5279
5280 completed = qdio_inspect_queue(CARD_DDEV(card), queue_no, false,
5281 &start, &error);
5282 if (completed <= 0) {
5283
5284 if (napi_complete_done(napi, 0))
5285 qeth_tx_arm_timer(queue);
5286 return 0;
5287 }
5288
5289 for (i = start; i < start + completed; i++) {
5290 struct qeth_qdio_out_buffer *buffer;
5291 unsigned int bidx = QDIO_BUFNR(i);
5292
5293 buffer = queue->bufs[bidx];
5294 packets += skb_queue_len(&buffer->skb_list);
5295 bytes += buffer->bytes;
5296
5297 qeth_handle_send_error(card, buffer, error);
5298 qeth_iqd_tx_complete(queue, bidx, error, budget);
5299 qeth_cleanup_handled_pending(queue, bidx, false);
5300 }
5301
5302 netdev_tx_completed_queue(txq, packets, bytes);
5303 atomic_sub(completed, &queue->used_buffers);
5304 work_done += completed;
5305
5306
5307
5308
5309
5310
5311 if (netif_tx_queue_stopped(txq) &&
5312 !qeth_out_queue_is_full(queue))
5313 netif_tx_wake_queue(txq);
5314 }
5315 }
5316
5317 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5318 {
5319 if (!cmd->hdr.return_code)
5320 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5321 return cmd->hdr.return_code;
5322 }
5323
5324 static int qeth_setassparms_get_caps_cb(struct qeth_card *card,
5325 struct qeth_reply *reply,
5326 unsigned long data)
5327 {
5328 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5329 struct qeth_ipa_caps *caps = reply->param;
5330
5331 if (qeth_setassparms_inspect_rc(cmd))
5332 return -EIO;
5333
5334 caps->supported = cmd->data.setassparms.data.caps.supported;
5335 caps->enabled = cmd->data.setassparms.data.caps.enabled;
5336 return 0;
5337 }
5338
5339 int qeth_setassparms_cb(struct qeth_card *card,
5340 struct qeth_reply *reply, unsigned long data)
5341 {
5342 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5343
5344 QETH_CARD_TEXT(card, 4, "defadpcb");
5345
5346 if (cmd->hdr.return_code)
5347 return -EIO;
5348
5349 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5350 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5351 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5352 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5353 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5354 return 0;
5355 }
5356 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5357
5358 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5359 enum qeth_ipa_funcs ipa_func,
5360 u16 cmd_code,
5361 unsigned int data_length,
5362 enum qeth_prot_versions prot)
5363 {
5364 struct qeth_ipacmd_setassparms *setassparms;
5365 struct qeth_ipacmd_setassparms_hdr *hdr;
5366 struct qeth_cmd_buffer *iob;
5367
5368 QETH_CARD_TEXT(card, 4, "getasscm");
5369 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
5370 data_length +
5371 offsetof(struct qeth_ipacmd_setassparms,
5372 data));
5373 if (!iob)
5374 return NULL;
5375
5376 setassparms = &__ipa_cmd(iob)->data.setassparms;
5377 setassparms->assist_no = ipa_func;
5378
5379 hdr = &setassparms->hdr;
5380 hdr->length = sizeof(*hdr) + data_length;
5381 hdr->command_code = cmd_code;
5382 return iob;
5383 }
5384 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5385
5386 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
5387 enum qeth_ipa_funcs ipa_func,
5388 u16 cmd_code, u32 *data,
5389 enum qeth_prot_versions prot)
5390 {
5391 unsigned int length = data ? SETASS_DATA_SIZEOF(flags_32bit) : 0;
5392 struct qeth_cmd_buffer *iob;
5393
5394 QETH_CARD_TEXT_(card, 4, "simassp%i", prot);
5395 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot);
5396 if (!iob)
5397 return -ENOMEM;
5398
5399 if (data)
5400 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = *data;
5401 return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL);
5402 }
5403 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot);
5404
5405 static void qeth_unregister_dbf_views(void)
5406 {
5407 int x;
5408 for (x = 0; x < QETH_DBF_INFOS; x++) {
5409 debug_unregister(qeth_dbf[x].id);
5410 qeth_dbf[x].id = NULL;
5411 }
5412 }
5413
5414 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5415 {
5416 char dbf_txt_buf[32];
5417 va_list args;
5418
5419 if (!debug_level_enabled(id, level))
5420 return;
5421 va_start(args, fmt);
5422 vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5423 va_end(args);
5424 debug_text_event(id, level, dbf_txt_buf);
5425 }
5426 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5427
5428 static int qeth_register_dbf_views(void)
5429 {
5430 int ret;
5431 int x;
5432
5433 for (x = 0; x < QETH_DBF_INFOS; x++) {
5434
5435 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5436 qeth_dbf[x].pages,
5437 qeth_dbf[x].areas,
5438 qeth_dbf[x].len);
5439 if (qeth_dbf[x].id == NULL) {
5440 qeth_unregister_dbf_views();
5441 return -ENOMEM;
5442 }
5443
5444
5445 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5446 if (ret) {
5447 qeth_unregister_dbf_views();
5448 return ret;
5449 }
5450
5451
5452 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5453 }
5454
5455 return 0;
5456 }
5457
5458 static DEFINE_MUTEX(qeth_mod_mutex);
5459
5460 int qeth_core_load_discipline(struct qeth_card *card,
5461 enum qeth_discipline_id discipline)
5462 {
5463 mutex_lock(&qeth_mod_mutex);
5464 switch (discipline) {
5465 case QETH_DISCIPLINE_LAYER3:
5466 card->discipline = try_then_request_module(
5467 symbol_get(qeth_l3_discipline), "qeth_l3");
5468 break;
5469 case QETH_DISCIPLINE_LAYER2:
5470 card->discipline = try_then_request_module(
5471 symbol_get(qeth_l2_discipline), "qeth_l2");
5472 break;
5473 default:
5474 break;
5475 }
5476 mutex_unlock(&qeth_mod_mutex);
5477
5478 if (!card->discipline) {
5479 dev_err(&card->gdev->dev, "There is no kernel module to "
5480 "support discipline %d\n", discipline);
5481 return -EINVAL;
5482 }
5483
5484 card->options.layer = discipline;
5485 return 0;
5486 }
5487
5488 void qeth_core_free_discipline(struct qeth_card *card)
5489 {
5490 if (IS_LAYER2(card))
5491 symbol_put(qeth_l2_discipline);
5492 else
5493 symbol_put(qeth_l3_discipline);
5494 card->options.layer = QETH_DISCIPLINE_UNDETERMINED;
5495 card->discipline = NULL;
5496 }
5497
5498 const struct device_type qeth_generic_devtype = {
5499 .name = "qeth_generic",
5500 .groups = qeth_generic_attr_groups,
5501 };
5502 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5503
5504 static const struct device_type qeth_osn_devtype = {
5505 .name = "qeth_osn",
5506 .groups = qeth_osn_attr_groups,
5507 };
5508
5509 #define DBF_NAME_LEN 20
5510
5511 struct qeth_dbf_entry {
5512 char dbf_name[DBF_NAME_LEN];
5513 debug_info_t *dbf_info;
5514 struct list_head dbf_list;
5515 };
5516
5517 static LIST_HEAD(qeth_dbf_list);
5518 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5519
5520 static debug_info_t *qeth_get_dbf_entry(char *name)
5521 {
5522 struct qeth_dbf_entry *entry;
5523 debug_info_t *rc = NULL;
5524
5525 mutex_lock(&qeth_dbf_list_mutex);
5526 list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5527 if (strcmp(entry->dbf_name, name) == 0) {
5528 rc = entry->dbf_info;
5529 break;
5530 }
5531 }
5532 mutex_unlock(&qeth_dbf_list_mutex);
5533 return rc;
5534 }
5535
5536 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5537 {
5538 struct qeth_dbf_entry *new_entry;
5539
5540 card->debug = debug_register(name, 2, 1, 8);
5541 if (!card->debug) {
5542 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5543 goto err;
5544 }
5545 if (debug_register_view(card->debug, &debug_hex_ascii_view))
5546 goto err_dbg;
5547 new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5548 if (!new_entry)
5549 goto err_dbg;
5550 strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5551 new_entry->dbf_info = card->debug;
5552 mutex_lock(&qeth_dbf_list_mutex);
5553 list_add(&new_entry->dbf_list, &qeth_dbf_list);
5554 mutex_unlock(&qeth_dbf_list_mutex);
5555
5556 return 0;
5557
5558 err_dbg:
5559 debug_unregister(card->debug);
5560 err:
5561 return -ENOMEM;
5562 }
5563
5564 static void qeth_clear_dbf_list(void)
5565 {
5566 struct qeth_dbf_entry *entry, *tmp;
5567
5568 mutex_lock(&qeth_dbf_list_mutex);
5569 list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5570 list_del(&entry->dbf_list);
5571 debug_unregister(entry->dbf_info);
5572 kfree(entry);
5573 }
5574 mutex_unlock(&qeth_dbf_list_mutex);
5575 }
5576
5577 static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
5578 {
5579 struct net_device *dev;
5580
5581 switch (card->info.type) {
5582 case QETH_CARD_TYPE_IQD:
5583 dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN,
5584 ether_setup, QETH_MAX_QUEUES, 1);
5585 break;
5586 case QETH_CARD_TYPE_OSM:
5587 dev = alloc_etherdev(0);
5588 break;
5589 case QETH_CARD_TYPE_OSN:
5590 dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup);
5591 break;
5592 default:
5593 dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1);
5594 }
5595
5596 if (!dev)
5597 return NULL;
5598
5599 dev->ml_priv = card;
5600 dev->watchdog_timeo = QETH_TX_TIMEOUT;
5601 dev->min_mtu = IS_OSN(card) ? 64 : 576;
5602
5603 dev->max_mtu = 0;
5604 dev->mtu = 0;
5605 SET_NETDEV_DEV(dev, &card->gdev->dev);
5606 netif_carrier_off(dev);
5607
5608 if (IS_OSN(card)) {
5609 dev->ethtool_ops = &qeth_osn_ethtool_ops;
5610 } else {
5611 dev->ethtool_ops = &qeth_ethtool_ops;
5612 dev->priv_flags &= ~IFF_TX_SKB_SHARING;
5613 dev->hw_features |= NETIF_F_SG;
5614 dev->vlan_features |= NETIF_F_SG;
5615 if (IS_IQD(card)) {
5616 dev->features |= NETIF_F_SG;
5617 if (netif_set_real_num_tx_queues(dev,
5618 QETH_IQD_MIN_TXQ)) {
5619 free_netdev(dev);
5620 return NULL;
5621 }
5622 }
5623 }
5624
5625 return dev;
5626 }
5627
5628 struct net_device *qeth_clone_netdev(struct net_device *orig)
5629 {
5630 struct net_device *clone = qeth_alloc_netdev(orig->ml_priv);
5631
5632 if (!clone)
5633 return NULL;
5634
5635 clone->dev_port = orig->dev_port;
5636 return clone;
5637 }
5638
5639 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5640 {
5641 struct qeth_card *card;
5642 struct device *dev;
5643 int rc;
5644 enum qeth_discipline_id enforced_disc;
5645 char dbf_name[DBF_NAME_LEN];
5646
5647 QETH_DBF_TEXT(SETUP, 2, "probedev");
5648
5649 dev = &gdev->dev;
5650 if (!get_device(dev))
5651 return -ENODEV;
5652
5653 QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5654
5655 card = qeth_alloc_card(gdev);
5656 if (!card) {
5657 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5658 rc = -ENOMEM;
5659 goto err_dev;
5660 }
5661
5662 snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5663 dev_name(&gdev->dev));
5664 card->debug = qeth_get_dbf_entry(dbf_name);
5665 if (!card->debug) {
5666 rc = qeth_add_dbf_entry(card, dbf_name);
5667 if (rc)
5668 goto err_card;
5669 }
5670
5671 qeth_setup_card(card);
5672 card->dev = qeth_alloc_netdev(card);
5673 if (!card->dev) {
5674 rc = -ENOMEM;
5675 goto err_card;
5676 }
5677
5678 card->qdio.no_out_queues = card->dev->num_tx_queues;
5679 rc = qeth_update_from_chp_desc(card);
5680 if (rc)
5681 goto err_chp_desc;
5682 qeth_determine_capabilities(card);
5683 qeth_set_blkt_defaults(card);
5684
5685 enforced_disc = qeth_enforce_discipline(card);
5686 switch (enforced_disc) {
5687 case QETH_DISCIPLINE_UNDETERMINED:
5688 gdev->dev.type = &qeth_generic_devtype;
5689 break;
5690 default:
5691 card->info.layer_enforced = true;
5692 rc = qeth_core_load_discipline(card, enforced_disc);
5693 if (rc)
5694 goto err_load;
5695
5696 gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype :
5697 card->discipline->devtype;
5698 rc = card->discipline->setup(card->gdev);
5699 if (rc)
5700 goto err_disc;
5701 break;
5702 }
5703
5704 return 0;
5705
5706 err_disc:
5707 qeth_core_free_discipline(card);
5708 err_load:
5709 err_chp_desc:
5710 free_netdev(card->dev);
5711 err_card:
5712 qeth_core_free_card(card);
5713 err_dev:
5714 put_device(dev);
5715 return rc;
5716 }
5717
5718 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5719 {
5720 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5721
5722 QETH_CARD_TEXT(card, 2, "removedv");
5723
5724 if (card->discipline) {
5725 card->discipline->remove(gdev);
5726 qeth_core_free_discipline(card);
5727 }
5728
5729 free_netdev(card->dev);
5730 qeth_core_free_card(card);
5731 put_device(&gdev->dev);
5732 }
5733
5734 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5735 {
5736 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5737 int rc = 0;
5738 enum qeth_discipline_id def_discipline;
5739
5740 if (!card->discipline) {
5741 def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 :
5742 QETH_DISCIPLINE_LAYER2;
5743 rc = qeth_core_load_discipline(card, def_discipline);
5744 if (rc)
5745 goto err;
5746 rc = card->discipline->setup(card->gdev);
5747 if (rc) {
5748 qeth_core_free_discipline(card);
5749 goto err;
5750 }
5751 }
5752 rc = card->discipline->set_online(gdev);
5753 err:
5754 return rc;
5755 }
5756
5757 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5758 {
5759 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5760 return card->discipline->set_offline(gdev);
5761 }
5762
5763 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5764 {
5765 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5766 qeth_set_allowed_threads(card, 0, 1);
5767 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5768 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5769 qeth_qdio_clear_card(card, 0);
5770 qeth_drain_output_queues(card);
5771 qdio_free(CARD_DDEV(card));
5772 }
5773
5774 static int qeth_suspend(struct ccwgroup_device *gdev)
5775 {
5776 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5777
5778 qeth_set_allowed_threads(card, 0, 1);
5779 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
5780 if (gdev->state == CCWGROUP_OFFLINE)
5781 return 0;
5782
5783 card->discipline->set_offline(gdev);
5784 return 0;
5785 }
5786
5787 static int qeth_resume(struct ccwgroup_device *gdev)
5788 {
5789 struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5790 int rc;
5791
5792 rc = card->discipline->set_online(gdev);
5793
5794 qeth_set_allowed_threads(card, 0xffffffff, 0);
5795 if (rc)
5796 dev_warn(&card->gdev->dev, "The qeth device driver failed to recover an error on the device\n");
5797 return rc;
5798 }
5799
5800 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5801 size_t count)
5802 {
5803 int err;
5804
5805 err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3,
5806 buf);
5807
5808 return err ? err : count;
5809 }
5810 static DRIVER_ATTR_WO(group);
5811
5812 static struct attribute *qeth_drv_attrs[] = {
5813 &driver_attr_group.attr,
5814 NULL,
5815 };
5816 static struct attribute_group qeth_drv_attr_group = {
5817 .attrs = qeth_drv_attrs,
5818 };
5819 static const struct attribute_group *qeth_drv_attr_groups[] = {
5820 &qeth_drv_attr_group,
5821 NULL,
5822 };
5823
5824 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5825 .driver = {
5826 .groups = qeth_drv_attr_groups,
5827 .owner = THIS_MODULE,
5828 .name = "qeth",
5829 },
5830 .ccw_driver = &qeth_ccw_driver,
5831 .setup = qeth_core_probe_device,
5832 .remove = qeth_core_remove_device,
5833 .set_online = qeth_core_set_online,
5834 .set_offline = qeth_core_set_offline,
5835 .shutdown = qeth_core_shutdown,
5836 .prepare = NULL,
5837 .complete = NULL,
5838 .freeze = qeth_suspend,
5839 .thaw = qeth_resume,
5840 .restore = qeth_resume,
5841 };
5842
5843 struct qeth_card *qeth_get_card_by_busid(char *bus_id)
5844 {
5845 struct ccwgroup_device *gdev;
5846 struct qeth_card *card;
5847
5848 gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id);
5849 if (!gdev)
5850 return NULL;
5851
5852 card = dev_get_drvdata(&gdev->dev);
5853 put_device(&gdev->dev);
5854 return card;
5855 }
5856 EXPORT_SYMBOL_GPL(qeth_get_card_by_busid);
5857
5858 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5859 {
5860 struct qeth_card *card = dev->ml_priv;
5861 struct mii_ioctl_data *mii_data;
5862 int rc = 0;
5863
5864 if (!card)
5865 return -ENODEV;
5866
5867 switch (cmd) {
5868 case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5869 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5870 break;
5871 case SIOC_QETH_GET_CARD_TYPE:
5872 if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) &&
5873 !IS_VM_NIC(card))
5874 return 1;
5875 return 0;
5876 case SIOCGMIIPHY:
5877 mii_data = if_mii(rq);
5878 mii_data->phy_id = 0;
5879 break;
5880 case SIOCGMIIREG:
5881 mii_data = if_mii(rq);
5882 if (mii_data->phy_id != 0)
5883 rc = -EINVAL;
5884 else
5885 mii_data->val_out = qeth_mdio_read(dev,
5886 mii_data->phy_id, mii_data->reg_num);
5887 break;
5888 case SIOC_QETH_QUERY_OAT:
5889 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5890 break;
5891 default:
5892 if (card->discipline->do_ioctl)
5893 rc = card->discipline->do_ioctl(dev, rq, cmd);
5894 else
5895 rc = -EOPNOTSUPP;
5896 }
5897 if (rc)
5898 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5899 return rc;
5900 }
5901 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5902
5903 static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply,
5904 unsigned long data)
5905 {
5906 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5907 u32 *features = reply->param;
5908
5909 if (qeth_setassparms_inspect_rc(cmd))
5910 return -EIO;
5911
5912 *features = cmd->data.setassparms.data.flags_32bit;
5913 return 0;
5914 }
5915
5916 static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5917 enum qeth_prot_versions prot)
5918 {
5919 return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP,
5920 NULL, prot);
5921 }
5922
5923 static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
5924 enum qeth_prot_versions prot)
5925 {
5926 u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP;
5927 struct qeth_cmd_buffer *iob;
5928 struct qeth_ipa_caps caps;
5929 u32 features;
5930 int rc;
5931
5932
5933 if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 &&
5934 cstype == IPA_OUTBOUND_CHECKSUM)
5935 required_features |= QETH_IPA_CHECKSUM_IP_HDR;
5936
5937 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0,
5938 prot);
5939 if (!iob)
5940 return -ENOMEM;
5941
5942 rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features);
5943 if (rc)
5944 return rc;
5945
5946 if ((required_features & features) != required_features) {
5947 qeth_set_csum_off(card, cstype, prot);
5948 return -EOPNOTSUPP;
5949 }
5950
5951 iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
5952 SETASS_DATA_SIZEOF(flags_32bit),
5953 prot);
5954 if (!iob) {
5955 qeth_set_csum_off(card, cstype, prot);
5956 return -ENOMEM;
5957 }
5958
5959 if (features & QETH_IPA_CHECKSUM_LP2LP)
5960 required_features |= QETH_IPA_CHECKSUM_LP2LP;
5961 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features;
5962 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
5963 if (rc) {
5964 qeth_set_csum_off(card, cstype, prot);
5965 return rc;
5966 }
5967
5968 if (!qeth_ipa_caps_supported(&caps, required_features) ||
5969 !qeth_ipa_caps_enabled(&caps, required_features)) {
5970 qeth_set_csum_off(card, cstype, prot);
5971 return -EOPNOTSUPP;
5972 }
5973
5974 dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n",
5975 cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot);
5976 if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) &&
5977 cstype == IPA_OUTBOUND_CHECKSUM)
5978 dev_warn(&card->gdev->dev,
5979 "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
5980 QETH_CARD_IFNAME(card));
5981 return 0;
5982 }
5983
5984 static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype,
5985 enum qeth_prot_versions prot)
5986 {
5987 return on ? qeth_set_csum_on(card, cstype, prot) :
5988 qeth_set_csum_off(card, cstype, prot);
5989 }
5990
5991 static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply,
5992 unsigned long data)
5993 {
5994 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
5995 struct qeth_tso_start_data *tso_data = reply->param;
5996
5997 if (qeth_setassparms_inspect_rc(cmd))
5998 return -EIO;
5999
6000 tso_data->mss = cmd->data.setassparms.data.tso.mss;
6001 tso_data->supported = cmd->data.setassparms.data.tso.supported;
6002 return 0;
6003 }
6004
6005 static int qeth_set_tso_off(struct qeth_card *card,
6006 enum qeth_prot_versions prot)
6007 {
6008 return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO,
6009 IPA_CMD_ASS_STOP, NULL, prot);
6010 }
6011
6012 static int qeth_set_tso_on(struct qeth_card *card,
6013 enum qeth_prot_versions prot)
6014 {
6015 struct qeth_tso_start_data tso_data;
6016 struct qeth_cmd_buffer *iob;
6017 struct qeth_ipa_caps caps;
6018 int rc;
6019
6020 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6021 IPA_CMD_ASS_START, 0, prot);
6022 if (!iob)
6023 return -ENOMEM;
6024
6025 rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data);
6026 if (rc)
6027 return rc;
6028
6029 if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) {
6030 qeth_set_tso_off(card, prot);
6031 return -EOPNOTSUPP;
6032 }
6033
6034 iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
6035 IPA_CMD_ASS_ENABLE,
6036 SETASS_DATA_SIZEOF(caps), prot);
6037 if (!iob) {
6038 qeth_set_tso_off(card, prot);
6039 return -ENOMEM;
6040 }
6041
6042
6043 __ipa_cmd(iob)->data.setassparms.data.caps.enabled =
6044 QETH_IPA_LARGE_SEND_TCP;
6045 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps);
6046 if (rc) {
6047 qeth_set_tso_off(card, prot);
6048 return rc;
6049 }
6050
6051 if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) ||
6052 !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) {
6053 qeth_set_tso_off(card, prot);
6054 return -EOPNOTSUPP;
6055 }
6056
6057 dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot,
6058 tso_data.mss);
6059 return 0;
6060 }
6061
6062 static int qeth_set_ipa_tso(struct qeth_card *card, bool on,
6063 enum qeth_prot_versions prot)
6064 {
6065 return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot);
6066 }
6067
6068 static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on)
6069 {
6070 int rc_ipv4 = (on) ? -EOPNOTSUPP : 0;
6071 int rc_ipv6;
6072
6073 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6074 rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6075 QETH_PROT_IPV4);
6076 if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6077
6078 return rc_ipv4;
6079
6080 rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM,
6081 QETH_PROT_IPV6);
6082
6083 if (on)
6084
6085 return (rc_ipv6) ? rc_ipv4 : 0;
6086
6087
6088 return (rc_ipv6) ? rc_ipv6 : rc_ipv4;
6089 }
6090
6091
6092
6093
6094
6095 void qeth_enable_hw_features(struct net_device *dev)
6096 {
6097 struct qeth_card *card = dev->ml_priv;
6098 netdev_features_t features;
6099
6100 features = dev->features;
6101
6102
6103
6104 dev->features &= ~dev->hw_features;
6105
6106 if (IS_LAYER2(card) && IS_VM_NIC(card)) {
6107 dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
6108 dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
6109 }
6110 netdev_update_features(dev);
6111 if (features != dev->features)
6112 dev_warn(&card->gdev->dev,
6113 "Device recovery failed to restore all offload features\n");
6114 }
6115 EXPORT_SYMBOL_GPL(qeth_enable_hw_features);
6116
6117 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6118 {
6119 struct qeth_card *card = dev->ml_priv;
6120 netdev_features_t changed = dev->features ^ features;
6121 int rc = 0;
6122
6123 QETH_CARD_TEXT(card, 2, "setfeat");
6124 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6125
6126 if ((changed & NETIF_F_IP_CSUM)) {
6127 rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM,
6128 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4);
6129 if (rc)
6130 changed ^= NETIF_F_IP_CSUM;
6131 }
6132 if (changed & NETIF_F_IPV6_CSUM) {
6133 rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM,
6134 IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6);
6135 if (rc)
6136 changed ^= NETIF_F_IPV6_CSUM;
6137 }
6138 if (changed & NETIF_F_RXCSUM) {
6139 rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM);
6140 if (rc)
6141 changed ^= NETIF_F_RXCSUM;
6142 }
6143 if (changed & NETIF_F_TSO) {
6144 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO,
6145 QETH_PROT_IPV4);
6146 if (rc)
6147 changed ^= NETIF_F_TSO;
6148 }
6149 if (changed & NETIF_F_TSO6) {
6150 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6,
6151 QETH_PROT_IPV6);
6152 if (rc)
6153 changed ^= NETIF_F_TSO6;
6154 }
6155
6156
6157 if ((dev->features ^ features) == changed)
6158 return 0;
6159
6160 dev->features ^= changed;
6161 return -EIO;
6162 }
6163 EXPORT_SYMBOL_GPL(qeth_set_features);
6164
6165 netdev_features_t qeth_fix_features(struct net_device *dev,
6166 netdev_features_t features)
6167 {
6168 struct qeth_card *card = dev->ml_priv;
6169
6170 QETH_CARD_TEXT(card, 2, "fixfeat");
6171 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6172 features &= ~NETIF_F_IP_CSUM;
6173 if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6))
6174 features &= ~NETIF_F_IPV6_CSUM;
6175 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) &&
6176 !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6))
6177 features &= ~NETIF_F_RXCSUM;
6178 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6179 features &= ~NETIF_F_TSO;
6180 if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO))
6181 features &= ~NETIF_F_TSO6;
6182
6183 QETH_CARD_HEX(card, 2, &features, sizeof(features));
6184 return features;
6185 }
6186 EXPORT_SYMBOL_GPL(qeth_fix_features);
6187
6188 netdev_features_t qeth_features_check(struct sk_buff *skb,
6189 struct net_device *dev,
6190 netdev_features_t features)
6191 {
6192
6193
6194
6195
6196
6197
6198
6199 if (netif_needs_gso(skb, features)) {
6200
6201 unsigned int doffset = skb->data - skb_mac_header(skb);
6202 unsigned int hsize = skb_shinfo(skb)->gso_size;
6203 unsigned int hroom = skb_headroom(skb);
6204
6205
6206 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6207 features &= ~NETIF_F_SG;
6208 }
6209
6210 return vlan_features_check(skb, features);
6211 }
6212 EXPORT_SYMBOL_GPL(qeth_features_check);
6213
6214 void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
6215 {
6216 struct qeth_card *card = dev->ml_priv;
6217 struct qeth_qdio_out_q *queue;
6218 unsigned int i;
6219
6220 QETH_CARD_TEXT(card, 5, "getstat");
6221
6222 stats->rx_packets = card->stats.rx_packets;
6223 stats->rx_bytes = card->stats.rx_bytes;
6224 stats->rx_errors = card->stats.rx_errors;
6225 stats->rx_dropped = card->stats.rx_dropped;
6226 stats->multicast = card->stats.rx_multicast;
6227
6228 for (i = 0; i < card->qdio.no_out_queues; i++) {
6229 queue = card->qdio.out_qs[i];
6230
6231 stats->tx_packets += queue->stats.tx_packets;
6232 stats->tx_bytes += queue->stats.tx_bytes;
6233 stats->tx_errors += queue->stats.tx_errors;
6234 stats->tx_dropped += queue->stats.tx_dropped;
6235 }
6236 }
6237 EXPORT_SYMBOL_GPL(qeth_get_stats64);
6238
6239 u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
6240 u8 cast_type, struct net_device *sb_dev)
6241 {
6242 if (cast_type != RTN_UNICAST)
6243 return QETH_IQD_MCAST_TXQ;
6244 return QETH_IQD_MIN_UCAST_TXQ;
6245 }
6246 EXPORT_SYMBOL_GPL(qeth_iqd_select_queue);
6247
6248 int qeth_open(struct net_device *dev)
6249 {
6250 struct qeth_card *card = dev->ml_priv;
6251
6252 QETH_CARD_TEXT(card, 4, "qethopen");
6253
6254 if (qdio_stop_irq(CARD_DDEV(card), 0) < 0)
6255 return -EIO;
6256
6257 card->data.state = CH_STATE_UP;
6258 netif_tx_start_all_queues(dev);
6259
6260 napi_enable(&card->napi);
6261 local_bh_disable();
6262 napi_schedule(&card->napi);
6263 if (IS_IQD(card)) {
6264 struct qeth_qdio_out_q *queue;
6265 unsigned int i;
6266
6267 qeth_for_each_output_queue(card, queue, i) {
6268 netif_tx_napi_add(dev, &queue->napi, qeth_tx_poll,
6269 QETH_NAPI_WEIGHT);
6270 napi_enable(&queue->napi);
6271 napi_schedule(&queue->napi);
6272 }
6273 }
6274
6275 local_bh_enable();
6276 return 0;
6277 }
6278 EXPORT_SYMBOL_GPL(qeth_open);
6279
6280 int qeth_stop(struct net_device *dev)
6281 {
6282 struct qeth_card *card = dev->ml_priv;
6283
6284 QETH_CARD_TEXT(card, 4, "qethstop");
6285 if (IS_IQD(card)) {
6286 struct qeth_qdio_out_q *queue;
6287 unsigned int i;
6288
6289
6290 qeth_for_each_output_queue(card, queue, i) {
6291 napi_disable(&queue->napi);
6292 del_timer_sync(&queue->timer);
6293 }
6294
6295
6296 netif_tx_disable(dev);
6297
6298
6299 qeth_for_each_output_queue(card, queue, i)
6300 netif_napi_del(&queue->napi);
6301 } else {
6302 netif_tx_disable(dev);
6303 }
6304
6305 napi_disable(&card->napi);
6306 return 0;
6307 }
6308 EXPORT_SYMBOL_GPL(qeth_stop);
6309
6310 static int __init qeth_core_init(void)
6311 {
6312 int rc;
6313
6314 pr_info("loading core functions\n");
6315
6316 rc = qeth_register_dbf_views();
6317 if (rc)
6318 goto dbf_err;
6319 qeth_core_root_dev = root_device_register("qeth");
6320 rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6321 if (rc)
6322 goto register_err;
6323 qeth_core_header_cache =
6324 kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
6325 roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
6326 0, NULL);
6327 if (!qeth_core_header_cache) {
6328 rc = -ENOMEM;
6329 goto slab_err;
6330 }
6331 qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6332 sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6333 if (!qeth_qdio_outbuf_cache) {
6334 rc = -ENOMEM;
6335 goto cqslab_err;
6336 }
6337 rc = ccw_driver_register(&qeth_ccw_driver);
6338 if (rc)
6339 goto ccw_err;
6340 rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6341 if (rc)
6342 goto ccwgroup_err;
6343
6344 return 0;
6345
6346 ccwgroup_err:
6347 ccw_driver_unregister(&qeth_ccw_driver);
6348 ccw_err:
6349 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6350 cqslab_err:
6351 kmem_cache_destroy(qeth_core_header_cache);
6352 slab_err:
6353 root_device_unregister(qeth_core_root_dev);
6354 register_err:
6355 qeth_unregister_dbf_views();
6356 dbf_err:
6357 pr_err("Initializing the qeth device driver failed\n");
6358 return rc;
6359 }
6360
6361 static void __exit qeth_core_exit(void)
6362 {
6363 qeth_clear_dbf_list();
6364 ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6365 ccw_driver_unregister(&qeth_ccw_driver);
6366 kmem_cache_destroy(qeth_qdio_outbuf_cache);
6367 kmem_cache_destroy(qeth_core_header_cache);
6368 root_device_unregister(qeth_core_root_dev);
6369 qeth_unregister_dbf_views();
6370 pr_info("core functions removed\n");
6371 }
6372
6373 module_init(qeth_core_init);
6374 module_exit(qeth_core_exit);
6375 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6376 MODULE_DESCRIPTION("qeth core functions");
6377 MODULE_LICENSE("GPL");