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68cf027f | 1 | // SPDX-License-Identifier: GPL-2.0 |
84640e27 KM |
2 | /* |
3 | * Keystone NetCP Core driver | |
4 | * | |
5 | * Copyright (C) 2014 Texas Instruments Incorporated | |
6 | * Authors: Sandeep Nair <sandeep_n@ti.com> | |
7 | * Sandeep Paulraj <s-paulraj@ti.com> | |
8 | * Cyril Chemparathy <cyril@ti.com> | |
9 | * Santosh Shilimkar <santosh.shilimkar@ti.com> | |
10 | * Murali Karicheri <m-karicheri2@ti.com> | |
11 | * Wingman Kwok <w-kwok2@ti.com> | |
84640e27 KM |
12 | */ |
13 | ||
14 | #include <linux/io.h> | |
15 | #include <linux/module.h> | |
16 | #include <linux/of_net.h> | |
17 | #include <linux/of_address.h> | |
18 | #include <linux/if_vlan.h> | |
19 | #include <linux/pm_runtime.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/soc/ti/knav_qmss.h> | |
22 | #include <linux/soc/ti/knav_dma.h> | |
23 | ||
24 | #include "netcp.h" | |
25 | ||
26 | #define NETCP_SOP_OFFSET (NET_IP_ALIGN + NET_SKB_PAD) | |
84640e27 | 27 | #define NETCP_TX_TIMEOUT (5 * HZ) |
866b8b18 | 28 | #define NETCP_PACKET_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN) |
84640e27 KM |
29 | #define NETCP_MIN_PACKET_SIZE ETH_ZLEN |
30 | #define NETCP_MAX_MCAST_ADDR 16 | |
31 | ||
32 | #define NETCP_EFUSE_REG_INDEX 0 | |
33 | ||
34 | #define NETCP_MOD_PROBE_SKIPPED 1 | |
35 | #define NETCP_MOD_PROBE_FAILED 2 | |
36 | ||
37 | #define NETCP_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \ | |
38 | NETIF_MSG_DRV | NETIF_MSG_LINK | \ | |
39 | NETIF_MSG_IFUP | NETIF_MSG_INTR | \ | |
40 | NETIF_MSG_PROBE | NETIF_MSG_TIMER | \ | |
41 | NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \ | |
42 | NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \ | |
43 | NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \ | |
44 | NETIF_MSG_RX_STATUS) | |
45 | ||
71382bc0 WK |
46 | #define NETCP_EFUSE_ADDR_SWAP 2 |
47 | ||
84640e27 KM |
48 | #define knav_queue_get_id(q) knav_queue_device_control(q, \ |
49 | KNAV_QUEUE_GET_ID, (unsigned long)NULL) | |
50 | ||
51 | #define knav_queue_enable_notify(q) knav_queue_device_control(q, \ | |
52 | KNAV_QUEUE_ENABLE_NOTIFY, \ | |
53 | (unsigned long)NULL) | |
54 | ||
55 | #define knav_queue_disable_notify(q) knav_queue_device_control(q, \ | |
56 | KNAV_QUEUE_DISABLE_NOTIFY, \ | |
57 | (unsigned long)NULL) | |
58 | ||
59 | #define knav_queue_get_count(q) knav_queue_device_control(q, \ | |
60 | KNAV_QUEUE_GET_COUNT, (unsigned long)NULL) | |
61 | ||
62 | #define for_each_netcp_module(module) \ | |
63 | list_for_each_entry(module, &netcp_modules, module_list) | |
64 | ||
65 | #define for_each_netcp_device_module(netcp_device, inst_modpriv) \ | |
66 | list_for_each_entry(inst_modpriv, \ | |
67 | &((netcp_device)->modpriv_head), inst_list) | |
68 | ||
69 | #define for_each_module(netcp, intf_modpriv) \ | |
70 | list_for_each_entry(intf_modpriv, &netcp->module_head, intf_list) | |
71 | ||
72 | /* Module management structures */ | |
73 | struct netcp_device { | |
74 | struct list_head device_list; | |
75 | struct list_head interface_head; | |
76 | struct list_head modpriv_head; | |
77 | struct device *device; | |
78 | }; | |
79 | ||
80 | struct netcp_inst_modpriv { | |
81 | struct netcp_device *netcp_device; | |
82 | struct netcp_module *netcp_module; | |
83 | struct list_head inst_list; | |
84 | void *module_priv; | |
85 | }; | |
86 | ||
87 | struct netcp_intf_modpriv { | |
88 | struct netcp_intf *netcp_priv; | |
89 | struct netcp_module *netcp_module; | |
90 | struct list_head intf_list; | |
91 | void *module_priv; | |
92 | }; | |
93 | ||
6246168b WK |
94 | struct netcp_tx_cb { |
95 | void *ts_context; | |
96 | void (*txtstamp)(void *context, struct sk_buff *skb); | |
97 | }; | |
98 | ||
84640e27 KM |
99 | static LIST_HEAD(netcp_devices); |
100 | static LIST_HEAD(netcp_modules); | |
101 | static DEFINE_MUTEX(netcp_modules_lock); | |
102 | ||
103 | static int netcp_debug_level = -1; | |
104 | module_param(netcp_debug_level, int, 0); | |
105 | MODULE_PARM_DESC(netcp_debug_level, "Netcp debug level (NETIF_MSG bits) (0=none,...,16=all)"); | |
106 | ||
107 | /* Helper functions - Get/Set */ | |
89907779 | 108 | static void get_pkt_info(dma_addr_t *buff, u32 *buff_len, dma_addr_t *ndesc, |
84640e27 KM |
109 | struct knav_dma_desc *desc) |
110 | { | |
89907779 AB |
111 | *buff_len = le32_to_cpu(desc->buff_len); |
112 | *buff = le32_to_cpu(desc->buff); | |
113 | *ndesc = le32_to_cpu(desc->next_desc); | |
84640e27 KM |
114 | } |
115 | ||
69d707d0 KM |
116 | static void get_desc_info(u32 *desc_info, u32 *pkt_info, |
117 | struct knav_dma_desc *desc) | |
118 | { | |
119 | *desc_info = le32_to_cpu(desc->desc_info); | |
120 | *pkt_info = le32_to_cpu(desc->packet_info); | |
121 | } | |
122 | ||
06324481 | 123 | static u32 get_sw_data(int index, struct knav_dma_desc *desc) |
84640e27 | 124 | { |
b1cb86ae | 125 | /* No Endian conversion needed as this data is untouched by hw */ |
06324481 | 126 | return desc->sw_data[index]; |
84640e27 KM |
127 | } |
128 | ||
06324481 KM |
129 | /* use these macros to get sw data */ |
130 | #define GET_SW_DATA0(desc) get_sw_data(0, desc) | |
131 | #define GET_SW_DATA1(desc) get_sw_data(1, desc) | |
132 | #define GET_SW_DATA2(desc) get_sw_data(2, desc) | |
133 | #define GET_SW_DATA3(desc) get_sw_data(3, desc) | |
89907779 AB |
134 | |
135 | static void get_org_pkt_info(dma_addr_t *buff, u32 *buff_len, | |
84640e27 KM |
136 | struct knav_dma_desc *desc) |
137 | { | |
89907779 AB |
138 | *buff = le32_to_cpu(desc->orig_buff); |
139 | *buff_len = le32_to_cpu(desc->orig_len); | |
84640e27 KM |
140 | } |
141 | ||
89907779 | 142 | static void get_words(dma_addr_t *words, int num_words, __le32 *desc) |
84640e27 KM |
143 | { |
144 | int i; | |
145 | ||
146 | for (i = 0; i < num_words; i++) | |
89907779 | 147 | words[i] = le32_to_cpu(desc[i]); |
84640e27 KM |
148 | } |
149 | ||
89907779 | 150 | static void set_pkt_info(dma_addr_t buff, u32 buff_len, u32 ndesc, |
84640e27 KM |
151 | struct knav_dma_desc *desc) |
152 | { | |
89907779 AB |
153 | desc->buff_len = cpu_to_le32(buff_len); |
154 | desc->buff = cpu_to_le32(buff); | |
155 | desc->next_desc = cpu_to_le32(ndesc); | |
84640e27 KM |
156 | } |
157 | ||
158 | static void set_desc_info(u32 desc_info, u32 pkt_info, | |
159 | struct knav_dma_desc *desc) | |
160 | { | |
89907779 AB |
161 | desc->desc_info = cpu_to_le32(desc_info); |
162 | desc->packet_info = cpu_to_le32(pkt_info); | |
84640e27 KM |
163 | } |
164 | ||
06324481 | 165 | static void set_sw_data(int index, u32 data, struct knav_dma_desc *desc) |
84640e27 | 166 | { |
b1cb86ae | 167 | /* No Endian conversion needed as this data is untouched by hw */ |
06324481 | 168 | desc->sw_data[index] = data; |
84640e27 KM |
169 | } |
170 | ||
06324481 KM |
171 | /* use these macros to set sw data */ |
172 | #define SET_SW_DATA0(data, desc) set_sw_data(0, data, desc) | |
173 | #define SET_SW_DATA1(data, desc) set_sw_data(1, data, desc) | |
174 | #define SET_SW_DATA2(data, desc) set_sw_data(2, data, desc) | |
175 | #define SET_SW_DATA3(data, desc) set_sw_data(3, data, desc) | |
176 | ||
89907779 | 177 | static void set_org_pkt_info(dma_addr_t buff, u32 buff_len, |
84640e27 KM |
178 | struct knav_dma_desc *desc) |
179 | { | |
89907779 AB |
180 | desc->orig_buff = cpu_to_le32(buff); |
181 | desc->orig_len = cpu_to_le32(buff_len); | |
84640e27 KM |
182 | } |
183 | ||
89907779 | 184 | static void set_words(u32 *words, int num_words, __le32 *desc) |
84640e27 KM |
185 | { |
186 | int i; | |
187 | ||
188 | for (i = 0; i < num_words; i++) | |
89907779 | 189 | desc[i] = cpu_to_le32(words[i]); |
84640e27 KM |
190 | } |
191 | ||
192 | /* Read the e-fuse value as 32 bit values to be endian independent */ | |
71382bc0 | 193 | static int emac_arch_get_mac_addr(char *x, void __iomem *efuse_mac, u32 swap) |
84640e27 KM |
194 | { |
195 | unsigned int addr0, addr1; | |
196 | ||
197 | addr1 = readl(efuse_mac + 4); | |
198 | addr0 = readl(efuse_mac); | |
199 | ||
71382bc0 WK |
200 | switch (swap) { |
201 | case NETCP_EFUSE_ADDR_SWAP: | |
202 | addr0 = addr1; | |
203 | addr1 = readl(efuse_mac); | |
204 | break; | |
205 | default: | |
206 | break; | |
207 | } | |
208 | ||
84640e27 KM |
209 | x[0] = (addr1 & 0x0000ff00) >> 8; |
210 | x[1] = addr1 & 0x000000ff; | |
211 | x[2] = (addr0 & 0xff000000) >> 24; | |
212 | x[3] = (addr0 & 0x00ff0000) >> 16; | |
213 | x[4] = (addr0 & 0x0000ff00) >> 8; | |
214 | x[5] = addr0 & 0x000000ff; | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
84640e27 KM |
219 | /* Module management routines */ |
220 | static int netcp_register_interface(struct netcp_intf *netcp) | |
221 | { | |
222 | int ret; | |
223 | ||
224 | ret = register_netdev(netcp->ndev); | |
225 | if (!ret) | |
226 | netcp->netdev_registered = true; | |
227 | return ret; | |
228 | } | |
229 | ||
230 | static int netcp_module_probe(struct netcp_device *netcp_device, | |
231 | struct netcp_module *module) | |
232 | { | |
233 | struct device *dev = netcp_device->device; | |
234 | struct device_node *devices, *interface, *node = dev->of_node; | |
235 | struct device_node *child; | |
236 | struct netcp_inst_modpriv *inst_modpriv; | |
237 | struct netcp_intf *netcp_intf; | |
238 | struct netcp_module *tmp; | |
239 | bool primary_module_registered = false; | |
240 | int ret; | |
241 | ||
242 | /* Find this module in the sub-tree for this device */ | |
243 | devices = of_get_child_by_name(node, "netcp-devices"); | |
244 | if (!devices) { | |
245 | dev_err(dev, "could not find netcp-devices node\n"); | |
246 | return NETCP_MOD_PROBE_SKIPPED; | |
247 | } | |
248 | ||
249 | for_each_available_child_of_node(devices, child) { | |
21c328dc RH |
250 | const char *name; |
251 | char node_name[32]; | |
84640e27 | 252 | |
1f43f400 | 253 | if (of_property_read_string(child, "label", &name) < 0) { |
21c328dc RH |
254 | snprintf(node_name, sizeof(node_name), "%pOFn", child); |
255 | name = node_name; | |
256 | } | |
84640e27 KM |
257 | if (!strcasecmp(module->name, name)) |
258 | break; | |
259 | } | |
260 | ||
261 | of_node_put(devices); | |
262 | /* If module not used for this device, skip it */ | |
263 | if (!child) { | |
264 | dev_warn(dev, "module(%s) not used for device\n", module->name); | |
265 | return NETCP_MOD_PROBE_SKIPPED; | |
266 | } | |
267 | ||
268 | inst_modpriv = devm_kzalloc(dev, sizeof(*inst_modpriv), GFP_KERNEL); | |
269 | if (!inst_modpriv) { | |
270 | of_node_put(child); | |
271 | return -ENOMEM; | |
272 | } | |
273 | ||
274 | inst_modpriv->netcp_device = netcp_device; | |
275 | inst_modpriv->netcp_module = module; | |
276 | list_add_tail(&inst_modpriv->inst_list, &netcp_device->modpriv_head); | |
277 | ||
278 | ret = module->probe(netcp_device, dev, child, | |
279 | &inst_modpriv->module_priv); | |
280 | of_node_put(child); | |
281 | if (ret) { | |
282 | dev_err(dev, "Probe of module(%s) failed with %d\n", | |
283 | module->name, ret); | |
284 | list_del(&inst_modpriv->inst_list); | |
285 | devm_kfree(dev, inst_modpriv); | |
286 | return NETCP_MOD_PROBE_FAILED; | |
287 | } | |
288 | ||
289 | /* Attach modules only if the primary module is probed */ | |
290 | for_each_netcp_module(tmp) { | |
291 | if (tmp->primary) | |
292 | primary_module_registered = true; | |
293 | } | |
294 | ||
295 | if (!primary_module_registered) | |
296 | return 0; | |
297 | ||
298 | /* Attach module to interfaces */ | |
299 | list_for_each_entry(netcp_intf, &netcp_device->interface_head, | |
300 | interface_list) { | |
301 | struct netcp_intf_modpriv *intf_modpriv; | |
302 | ||
84640e27 KM |
303 | intf_modpriv = devm_kzalloc(dev, sizeof(*intf_modpriv), |
304 | GFP_KERNEL); | |
305 | if (!intf_modpriv) | |
306 | return -ENOMEM; | |
307 | ||
308 | interface = of_parse_phandle(netcp_intf->node_interface, | |
309 | module->name, 0); | |
310 | ||
915c5857 KM |
311 | if (!interface) { |
312 | devm_kfree(dev, intf_modpriv); | |
313 | continue; | |
314 | } | |
315 | ||
84640e27 KM |
316 | intf_modpriv->netcp_priv = netcp_intf; |
317 | intf_modpriv->netcp_module = module; | |
318 | list_add_tail(&intf_modpriv->intf_list, | |
319 | &netcp_intf->module_head); | |
320 | ||
321 | ret = module->attach(inst_modpriv->module_priv, | |
322 | netcp_intf->ndev, interface, | |
323 | &intf_modpriv->module_priv); | |
324 | of_node_put(interface); | |
325 | if (ret) { | |
326 | dev_dbg(dev, "Attach of module %s declined with %d\n", | |
327 | module->name, ret); | |
328 | list_del(&intf_modpriv->intf_list); | |
329 | devm_kfree(dev, intf_modpriv); | |
330 | continue; | |
331 | } | |
332 | } | |
736532a0 KM |
333 | |
334 | /* Now register the interface with netdev */ | |
335 | list_for_each_entry(netcp_intf, | |
336 | &netcp_device->interface_head, | |
337 | interface_list) { | |
338 | /* If interface not registered then register now */ | |
339 | if (!netcp_intf->netdev_registered) { | |
340 | ret = netcp_register_interface(netcp_intf); | |
341 | if (ret) | |
342 | return -ENODEV; | |
343 | } | |
344 | } | |
84640e27 KM |
345 | return 0; |
346 | } | |
347 | ||
348 | int netcp_register_module(struct netcp_module *module) | |
349 | { | |
350 | struct netcp_device *netcp_device; | |
351 | struct netcp_module *tmp; | |
352 | int ret; | |
353 | ||
354 | if (!module->name) { | |
355 | WARN(1, "error registering netcp module: no name\n"); | |
356 | return -EINVAL; | |
357 | } | |
358 | ||
359 | if (!module->probe) { | |
360 | WARN(1, "error registering netcp module: no probe\n"); | |
361 | return -EINVAL; | |
362 | } | |
363 | ||
364 | mutex_lock(&netcp_modules_lock); | |
365 | ||
366 | for_each_netcp_module(tmp) { | |
367 | if (!strcasecmp(tmp->name, module->name)) { | |
368 | mutex_unlock(&netcp_modules_lock); | |
369 | return -EEXIST; | |
370 | } | |
371 | } | |
372 | list_add_tail(&module->module_list, &netcp_modules); | |
373 | ||
374 | list_for_each_entry(netcp_device, &netcp_devices, device_list) { | |
375 | ret = netcp_module_probe(netcp_device, module); | |
376 | if (ret < 0) | |
377 | goto fail; | |
378 | } | |
84640e27 KM |
379 | mutex_unlock(&netcp_modules_lock); |
380 | return 0; | |
381 | ||
382 | fail: | |
383 | mutex_unlock(&netcp_modules_lock); | |
384 | netcp_unregister_module(module); | |
385 | return ret; | |
386 | } | |
58c11b5f | 387 | EXPORT_SYMBOL_GPL(netcp_register_module); |
84640e27 KM |
388 | |
389 | static void netcp_release_module(struct netcp_device *netcp_device, | |
390 | struct netcp_module *module) | |
391 | { | |
392 | struct netcp_inst_modpriv *inst_modpriv, *inst_tmp; | |
393 | struct netcp_intf *netcp_intf, *netcp_tmp; | |
394 | struct device *dev = netcp_device->device; | |
395 | ||
396 | /* Release the module from each interface */ | |
397 | list_for_each_entry_safe(netcp_intf, netcp_tmp, | |
398 | &netcp_device->interface_head, | |
399 | interface_list) { | |
400 | struct netcp_intf_modpriv *intf_modpriv, *intf_tmp; | |
401 | ||
402 | list_for_each_entry_safe(intf_modpriv, intf_tmp, | |
403 | &netcp_intf->module_head, | |
404 | intf_list) { | |
405 | if (intf_modpriv->netcp_module == module) { | |
406 | module->release(intf_modpriv->module_priv); | |
407 | list_del(&intf_modpriv->intf_list); | |
408 | devm_kfree(dev, intf_modpriv); | |
409 | break; | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
414 | /* Remove the module from each instance */ | |
415 | list_for_each_entry_safe(inst_modpriv, inst_tmp, | |
416 | &netcp_device->modpriv_head, inst_list) { | |
417 | if (inst_modpriv->netcp_module == module) { | |
418 | module->remove(netcp_device, | |
419 | inst_modpriv->module_priv); | |
420 | list_del(&inst_modpriv->inst_list); | |
421 | devm_kfree(dev, inst_modpriv); | |
422 | break; | |
423 | } | |
424 | } | |
425 | } | |
426 | ||
427 | void netcp_unregister_module(struct netcp_module *module) | |
428 | { | |
429 | struct netcp_device *netcp_device; | |
430 | struct netcp_module *module_tmp; | |
431 | ||
432 | mutex_lock(&netcp_modules_lock); | |
433 | ||
434 | list_for_each_entry(netcp_device, &netcp_devices, device_list) { | |
435 | netcp_release_module(netcp_device, module); | |
436 | } | |
437 | ||
438 | /* Remove the module from the module list */ | |
439 | for_each_netcp_module(module_tmp) { | |
440 | if (module == module_tmp) { | |
441 | list_del(&module->module_list); | |
442 | break; | |
443 | } | |
444 | } | |
445 | ||
446 | mutex_unlock(&netcp_modules_lock); | |
447 | } | |
58c11b5f | 448 | EXPORT_SYMBOL_GPL(netcp_unregister_module); |
84640e27 KM |
449 | |
450 | void *netcp_module_get_intf_data(struct netcp_module *module, | |
451 | struct netcp_intf *intf) | |
452 | { | |
453 | struct netcp_intf_modpriv *intf_modpriv; | |
454 | ||
455 | list_for_each_entry(intf_modpriv, &intf->module_head, intf_list) | |
456 | if (intf_modpriv->netcp_module == module) | |
457 | return intf_modpriv->module_priv; | |
458 | return NULL; | |
459 | } | |
58c11b5f | 460 | EXPORT_SYMBOL_GPL(netcp_module_get_intf_data); |
84640e27 KM |
461 | |
462 | /* Module TX and RX Hook management */ | |
463 | struct netcp_hook_list { | |
464 | struct list_head list; | |
465 | netcp_hook_rtn *hook_rtn; | |
466 | void *hook_data; | |
467 | int order; | |
468 | }; | |
469 | ||
470 | int netcp_register_txhook(struct netcp_intf *netcp_priv, int order, | |
471 | netcp_hook_rtn *hook_rtn, void *hook_data) | |
472 | { | |
473 | struct netcp_hook_list *entry; | |
474 | struct netcp_hook_list *next; | |
475 | unsigned long flags; | |
476 | ||
477 | entry = devm_kzalloc(netcp_priv->dev, sizeof(*entry), GFP_KERNEL); | |
478 | if (!entry) | |
479 | return -ENOMEM; | |
480 | ||
481 | entry->hook_rtn = hook_rtn; | |
482 | entry->hook_data = hook_data; | |
483 | entry->order = order; | |
484 | ||
485 | spin_lock_irqsave(&netcp_priv->lock, flags); | |
486 | list_for_each_entry(next, &netcp_priv->txhook_list_head, list) { | |
487 | if (next->order > order) | |
488 | break; | |
489 | } | |
490 | __list_add(&entry->list, next->list.prev, &next->list); | |
491 | spin_unlock_irqrestore(&netcp_priv->lock, flags); | |
492 | ||
493 | return 0; | |
494 | } | |
58c11b5f | 495 | EXPORT_SYMBOL_GPL(netcp_register_txhook); |
84640e27 KM |
496 | |
497 | int netcp_unregister_txhook(struct netcp_intf *netcp_priv, int order, | |
498 | netcp_hook_rtn *hook_rtn, void *hook_data) | |
499 | { | |
500 | struct netcp_hook_list *next, *n; | |
501 | unsigned long flags; | |
502 | ||
503 | spin_lock_irqsave(&netcp_priv->lock, flags); | |
504 | list_for_each_entry_safe(next, n, &netcp_priv->txhook_list_head, list) { | |
505 | if ((next->order == order) && | |
506 | (next->hook_rtn == hook_rtn) && | |
507 | (next->hook_data == hook_data)) { | |
508 | list_del(&next->list); | |
509 | spin_unlock_irqrestore(&netcp_priv->lock, flags); | |
510 | devm_kfree(netcp_priv->dev, next); | |
511 | return 0; | |
512 | } | |
513 | } | |
514 | spin_unlock_irqrestore(&netcp_priv->lock, flags); | |
515 | return -ENOENT; | |
516 | } | |
58c11b5f | 517 | EXPORT_SYMBOL_GPL(netcp_unregister_txhook); |
84640e27 KM |
518 | |
519 | int netcp_register_rxhook(struct netcp_intf *netcp_priv, int order, | |
520 | netcp_hook_rtn *hook_rtn, void *hook_data) | |
521 | { | |
522 | struct netcp_hook_list *entry; | |
523 | struct netcp_hook_list *next; | |
524 | unsigned long flags; | |
525 | ||
526 | entry = devm_kzalloc(netcp_priv->dev, sizeof(*entry), GFP_KERNEL); | |
527 | if (!entry) | |
528 | return -ENOMEM; | |
529 | ||
530 | entry->hook_rtn = hook_rtn; | |
531 | entry->hook_data = hook_data; | |
532 | entry->order = order; | |
533 | ||
534 | spin_lock_irqsave(&netcp_priv->lock, flags); | |
535 | list_for_each_entry(next, &netcp_priv->rxhook_list_head, list) { | |
536 | if (next->order > order) | |
537 | break; | |
538 | } | |
539 | __list_add(&entry->list, next->list.prev, &next->list); | |
540 | spin_unlock_irqrestore(&netcp_priv->lock, flags); | |
541 | ||
542 | return 0; | |
543 | } | |
6246168b | 544 | EXPORT_SYMBOL_GPL(netcp_register_rxhook); |
84640e27 KM |
545 | |
546 | int netcp_unregister_rxhook(struct netcp_intf *netcp_priv, int order, | |
547 | netcp_hook_rtn *hook_rtn, void *hook_data) | |
548 | { | |
549 | struct netcp_hook_list *next, *n; | |
550 | unsigned long flags; | |
551 | ||
552 | spin_lock_irqsave(&netcp_priv->lock, flags); | |
553 | list_for_each_entry_safe(next, n, &netcp_priv->rxhook_list_head, list) { | |
554 | if ((next->order == order) && | |
555 | (next->hook_rtn == hook_rtn) && | |
556 | (next->hook_data == hook_data)) { | |
557 | list_del(&next->list); | |
558 | spin_unlock_irqrestore(&netcp_priv->lock, flags); | |
559 | devm_kfree(netcp_priv->dev, next); | |
560 | return 0; | |
561 | } | |
562 | } | |
563 | spin_unlock_irqrestore(&netcp_priv->lock, flags); | |
564 | ||
565 | return -ENOENT; | |
566 | } | |
6246168b | 567 | EXPORT_SYMBOL_GPL(netcp_unregister_rxhook); |
84640e27 KM |
568 | |
569 | static void netcp_frag_free(bool is_frag, void *ptr) | |
570 | { | |
571 | if (is_frag) | |
7d525c4e | 572 | skb_free_frag(ptr); |
84640e27 KM |
573 | else |
574 | kfree(ptr); | |
575 | } | |
576 | ||
577 | static void netcp_free_rx_desc_chain(struct netcp_intf *netcp, | |
578 | struct knav_dma_desc *desc) | |
579 | { | |
580 | struct knav_dma_desc *ndesc; | |
581 | dma_addr_t dma_desc, dma_buf; | |
582 | unsigned int buf_len, dma_sz = sizeof(*ndesc); | |
583 | void *buf_ptr; | |
958d104e | 584 | u32 tmp; |
84640e27 KM |
585 | |
586 | get_words(&dma_desc, 1, &desc->next_desc); | |
587 | ||
588 | while (dma_desc) { | |
589 | ndesc = knav_pool_desc_unmap(netcp->rx_pool, dma_desc, dma_sz); | |
590 | if (unlikely(!ndesc)) { | |
591 | dev_err(netcp->ndev_dev, "failed to unmap Rx desc\n"); | |
592 | break; | |
593 | } | |
958d104e | 594 | get_pkt_info(&dma_buf, &tmp, &dma_desc, ndesc); |
06324481 KM |
595 | /* warning!!!! We are retrieving the virtual ptr in the sw_data |
596 | * field as a 32bit value. Will not work on 64bit machines | |
597 | */ | |
598 | buf_ptr = (void *)GET_SW_DATA0(ndesc); | |
599 | buf_len = (int)GET_SW_DATA1(desc); | |
84640e27 KM |
600 | dma_unmap_page(netcp->dev, dma_buf, PAGE_SIZE, DMA_FROM_DEVICE); |
601 | __free_page(buf_ptr); | |
602 | knav_pool_desc_put(netcp->rx_pool, desc); | |
603 | } | |
06324481 KM |
604 | /* warning!!!! We are retrieving the virtual ptr in the sw_data |
605 | * field as a 32bit value. Will not work on 64bit machines | |
606 | */ | |
607 | buf_ptr = (void *)GET_SW_DATA0(desc); | |
608 | buf_len = (int)GET_SW_DATA1(desc); | |
89907779 | 609 | |
84640e27 KM |
610 | if (buf_ptr) |
611 | netcp_frag_free(buf_len <= PAGE_SIZE, buf_ptr); | |
612 | knav_pool_desc_put(netcp->rx_pool, desc); | |
613 | } | |
614 | ||
615 | static void netcp_empty_rx_queue(struct netcp_intf *netcp) | |
616 | { | |
6a8162e9 | 617 | struct netcp_stats *rx_stats = &netcp->stats; |
84640e27 KM |
618 | struct knav_dma_desc *desc; |
619 | unsigned int dma_sz; | |
620 | dma_addr_t dma; | |
621 | ||
622 | for (; ;) { | |
623 | dma = knav_queue_pop(netcp->rx_queue, &dma_sz); | |
624 | if (!dma) | |
625 | break; | |
626 | ||
627 | desc = knav_pool_desc_unmap(netcp->rx_pool, dma, dma_sz); | |
628 | if (unlikely(!desc)) { | |
629 | dev_err(netcp->ndev_dev, "%s: failed to unmap Rx desc\n", | |
630 | __func__); | |
6a8162e9 | 631 | rx_stats->rx_errors++; |
84640e27 KM |
632 | continue; |
633 | } | |
634 | netcp_free_rx_desc_chain(netcp, desc); | |
6a8162e9 | 635 | rx_stats->rx_dropped++; |
84640e27 KM |
636 | } |
637 | } | |
638 | ||
639 | static int netcp_process_one_rx_packet(struct netcp_intf *netcp) | |
640 | { | |
6a8162e9 | 641 | struct netcp_stats *rx_stats = &netcp->stats; |
84640e27 KM |
642 | unsigned int dma_sz, buf_len, org_buf_len; |
643 | struct knav_dma_desc *desc, *ndesc; | |
644 | unsigned int pkt_sz = 0, accum_sz; | |
645 | struct netcp_hook_list *rx_hook; | |
646 | dma_addr_t dma_desc, dma_buff; | |
647 | struct netcp_packet p_info; | |
648 | struct sk_buff *skb; | |
649 | void *org_buf_ptr; | |
69d707d0 | 650 | u32 tmp; |
84640e27 KM |
651 | |
652 | dma_desc = knav_queue_pop(netcp->rx_queue, &dma_sz); | |
653 | if (!dma_desc) | |
654 | return -1; | |
655 | ||
656 | desc = knav_pool_desc_unmap(netcp->rx_pool, dma_desc, dma_sz); | |
657 | if (unlikely(!desc)) { | |
658 | dev_err(netcp->ndev_dev, "failed to unmap Rx desc\n"); | |
659 | return 0; | |
660 | } | |
661 | ||
662 | get_pkt_info(&dma_buff, &buf_len, &dma_desc, desc); | |
06324481 KM |
663 | /* warning!!!! We are retrieving the virtual ptr in the sw_data |
664 | * field as a 32bit value. Will not work on 64bit machines | |
665 | */ | |
666 | org_buf_ptr = (void *)GET_SW_DATA0(desc); | |
667 | org_buf_len = (int)GET_SW_DATA1(desc); | |
84640e27 KM |
668 | |
669 | if (unlikely(!org_buf_ptr)) { | |
670 | dev_err(netcp->ndev_dev, "NULL bufptr in desc\n"); | |
671 | goto free_desc; | |
672 | } | |
673 | ||
674 | pkt_sz &= KNAV_DMA_DESC_PKT_LEN_MASK; | |
675 | accum_sz = buf_len; | |
676 | dma_unmap_single(netcp->dev, dma_buff, buf_len, DMA_FROM_DEVICE); | |
677 | ||
678 | /* Build a new sk_buff for the primary buffer */ | |
679 | skb = build_skb(org_buf_ptr, org_buf_len); | |
680 | if (unlikely(!skb)) { | |
681 | dev_err(netcp->ndev_dev, "build_skb() failed\n"); | |
682 | goto free_desc; | |
683 | } | |
684 | ||
685 | /* update data, tail and len */ | |
686 | skb_reserve(skb, NETCP_SOP_OFFSET); | |
687 | __skb_put(skb, buf_len); | |
688 | ||
689 | /* Fill in the page fragment list */ | |
690 | while (dma_desc) { | |
691 | struct page *page; | |
692 | ||
693 | ndesc = knav_pool_desc_unmap(netcp->rx_pool, dma_desc, dma_sz); | |
694 | if (unlikely(!ndesc)) { | |
695 | dev_err(netcp->ndev_dev, "failed to unmap Rx desc\n"); | |
696 | goto free_desc; | |
697 | } | |
698 | ||
699 | get_pkt_info(&dma_buff, &buf_len, &dma_desc, ndesc); | |
06324481 KM |
700 | /* warning!!!! We are retrieving the virtual ptr in the sw_data |
701 | * field as a 32bit value. Will not work on 64bit machines | |
702 | */ | |
5a717843 | 703 | page = (struct page *)GET_SW_DATA0(ndesc); |
84640e27 KM |
704 | |
705 | if (likely(dma_buff && buf_len && page)) { | |
706 | dma_unmap_page(netcp->dev, dma_buff, PAGE_SIZE, | |
707 | DMA_FROM_DEVICE); | |
708 | } else { | |
89907779 AB |
709 | dev_err(netcp->ndev_dev, "Bad Rx desc dma_buff(%pad), len(%d), page(%p)\n", |
710 | &dma_buff, buf_len, page); | |
84640e27 KM |
711 | goto free_desc; |
712 | } | |
713 | ||
714 | skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, | |
715 | offset_in_page(dma_buff), buf_len, PAGE_SIZE); | |
716 | accum_sz += buf_len; | |
717 | ||
718 | /* Free the descriptor */ | |
719 | knav_pool_desc_put(netcp->rx_pool, ndesc); | |
720 | } | |
721 | ||
84640e27 KM |
722 | /* check for packet len and warn */ |
723 | if (unlikely(pkt_sz != accum_sz)) | |
724 | dev_dbg(netcp->ndev_dev, "mismatch in packet size(%d) & sum of fragments(%d)\n", | |
725 | pkt_sz, accum_sz); | |
726 | ||
4cd85a61 KM |
727 | /* Newer version of the Ethernet switch can trim the Ethernet FCS |
728 | * from the packet and is indicated in hw_cap. So trim it only for | |
729 | * older h/w | |
730 | */ | |
731 | if (!(netcp->hw_cap & ETH_SW_CAN_REMOVE_ETH_FCS)) | |
732 | __pskb_trim(skb, skb->len - ETH_FCS_LEN); | |
84640e27 KM |
733 | |
734 | /* Call each of the RX hooks */ | |
735 | p_info.skb = skb; | |
6246168b | 736 | skb->dev = netcp->ndev; |
84640e27 | 737 | p_info.rxtstamp_complete = false; |
69d707d0 KM |
738 | get_desc_info(&tmp, &p_info.eflags, desc); |
739 | p_info.epib = desc->epib; | |
740 | p_info.psdata = (u32 __force *)desc->psdata; | |
741 | p_info.eflags = ((p_info.eflags >> KNAV_DMA_DESC_EFLAGS_SHIFT) & | |
742 | KNAV_DMA_DESC_EFLAGS_MASK); | |
84640e27 KM |
743 | list_for_each_entry(rx_hook, &netcp->rxhook_list_head, list) { |
744 | int ret; | |
745 | ||
746 | ret = rx_hook->hook_rtn(rx_hook->order, rx_hook->hook_data, | |
747 | &p_info); | |
748 | if (unlikely(ret)) { | |
749 | dev_err(netcp->ndev_dev, "RX hook %d failed: %d\n", | |
750 | rx_hook->order, ret); | |
69d707d0 | 751 | /* Free the primary descriptor */ |
6a8162e9 | 752 | rx_stats->rx_dropped++; |
69d707d0 | 753 | knav_pool_desc_put(netcp->rx_pool, desc); |
84640e27 KM |
754 | dev_kfree_skb(skb); |
755 | return 0; | |
756 | } | |
757 | } | |
69d707d0 KM |
758 | /* Free the primary descriptor */ |
759 | knav_pool_desc_put(netcp->rx_pool, desc); | |
84640e27 | 760 | |
6a8162e9 MS |
761 | u64_stats_update_begin(&rx_stats->syncp_rx); |
762 | rx_stats->rx_packets++; | |
763 | rx_stats->rx_bytes += skb->len; | |
764 | u64_stats_update_end(&rx_stats->syncp_rx); | |
84640e27 KM |
765 | |
766 | /* push skb up the stack */ | |
767 | skb->protocol = eth_type_trans(skb, netcp->ndev); | |
768 | netif_receive_skb(skb); | |
769 | return 0; | |
770 | ||
771 | free_desc: | |
772 | netcp_free_rx_desc_chain(netcp, desc); | |
6a8162e9 | 773 | rx_stats->rx_errors++; |
84640e27 KM |
774 | return 0; |
775 | } | |
776 | ||
777 | static int netcp_process_rx_packets(struct netcp_intf *netcp, | |
778 | unsigned int budget) | |
779 | { | |
780 | int i; | |
781 | ||
782 | for (i = 0; (i < budget) && !netcp_process_one_rx_packet(netcp); i++) | |
783 | ; | |
784 | return i; | |
785 | } | |
786 | ||
787 | /* Release descriptors and attached buffers from Rx FDQ */ | |
788 | static void netcp_free_rx_buf(struct netcp_intf *netcp, int fdq) | |
789 | { | |
790 | struct knav_dma_desc *desc; | |
791 | unsigned int buf_len, dma_sz; | |
792 | dma_addr_t dma; | |
793 | void *buf_ptr; | |
84640e27 KM |
794 | |
795 | /* Allocate descriptor */ | |
796 | while ((dma = knav_queue_pop(netcp->rx_fdq[fdq], &dma_sz))) { | |
797 | desc = knav_pool_desc_unmap(netcp->rx_pool, dma, dma_sz); | |
798 | if (unlikely(!desc)) { | |
799 | dev_err(netcp->ndev_dev, "failed to unmap Rx desc\n"); | |
800 | continue; | |
801 | } | |
802 | ||
803 | get_org_pkt_info(&dma, &buf_len, desc); | |
06324481 KM |
804 | /* warning!!!! We are retrieving the virtual ptr in the sw_data |
805 | * field as a 32bit value. Will not work on 64bit machines | |
806 | */ | |
807 | buf_ptr = (void *)GET_SW_DATA0(desc); | |
84640e27 KM |
808 | |
809 | if (unlikely(!dma)) { | |
810 | dev_err(netcp->ndev_dev, "NULL orig_buff in desc\n"); | |
811 | knav_pool_desc_put(netcp->rx_pool, desc); | |
812 | continue; | |
813 | } | |
814 | ||
815 | if (unlikely(!buf_ptr)) { | |
816 | dev_err(netcp->ndev_dev, "NULL bufptr in desc\n"); | |
817 | knav_pool_desc_put(netcp->rx_pool, desc); | |
818 | continue; | |
819 | } | |
820 | ||
821 | if (fdq == 0) { | |
822 | dma_unmap_single(netcp->dev, dma, buf_len, | |
823 | DMA_FROM_DEVICE); | |
824 | netcp_frag_free((buf_len <= PAGE_SIZE), buf_ptr); | |
825 | } else { | |
826 | dma_unmap_page(netcp->dev, dma, buf_len, | |
827 | DMA_FROM_DEVICE); | |
828 | __free_page(buf_ptr); | |
829 | } | |
830 | ||
831 | knav_pool_desc_put(netcp->rx_pool, desc); | |
832 | } | |
833 | } | |
834 | ||
835 | static void netcp_rxpool_free(struct netcp_intf *netcp) | |
836 | { | |
837 | int i; | |
838 | ||
839 | for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN && | |
840 | !IS_ERR_OR_NULL(netcp->rx_fdq[i]); i++) | |
841 | netcp_free_rx_buf(netcp, i); | |
842 | ||
843 | if (knav_pool_count(netcp->rx_pool) != netcp->rx_pool_size) | |
844 | dev_err(netcp->ndev_dev, "Lost Rx (%d) descriptors\n", | |
845 | netcp->rx_pool_size - knav_pool_count(netcp->rx_pool)); | |
846 | ||
847 | knav_pool_destroy(netcp->rx_pool); | |
848 | netcp->rx_pool = NULL; | |
849 | } | |
850 | ||
e558b1fb | 851 | static int netcp_allocate_rx_buf(struct netcp_intf *netcp, int fdq) |
84640e27 KM |
852 | { |
853 | struct knav_dma_desc *hwdesc; | |
854 | unsigned int buf_len, dma_sz; | |
855 | u32 desc_info, pkt_info; | |
856 | struct page *page; | |
857 | dma_addr_t dma; | |
858 | void *bufptr; | |
b1cb86ae | 859 | u32 sw_data[2]; |
84640e27 KM |
860 | |
861 | /* Allocate descriptor */ | |
862 | hwdesc = knav_pool_desc_get(netcp->rx_pool); | |
863 | if (IS_ERR_OR_NULL(hwdesc)) { | |
864 | dev_dbg(netcp->ndev_dev, "out of rx pool desc\n"); | |
e558b1fb | 865 | return -ENOMEM; |
84640e27 KM |
866 | } |
867 | ||
868 | if (likely(fdq == 0)) { | |
869 | unsigned int primary_buf_len; | |
870 | /* Allocate a primary receive queue entry */ | |
866b8b18 | 871 | buf_len = NETCP_PACKET_SIZE + NETCP_SOP_OFFSET; |
84640e27 KM |
872 | primary_buf_len = SKB_DATA_ALIGN(buf_len) + |
873 | SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); | |
874 | ||
866b8b18 | 875 | bufptr = netdev_alloc_frag(primary_buf_len); |
b1cb86ae | 876 | sw_data[1] = primary_buf_len; |
84640e27 KM |
877 | |
878 | if (unlikely(!bufptr)) { | |
866b8b18 WK |
879 | dev_warn_ratelimited(netcp->ndev_dev, |
880 | "Primary RX buffer alloc failed\n"); | |
84640e27 KM |
881 | goto fail; |
882 | } | |
883 | dma = dma_map_single(netcp->dev, bufptr, buf_len, | |
884 | DMA_TO_DEVICE); | |
866b8b18 WK |
885 | if (unlikely(dma_mapping_error(netcp->dev, dma))) |
886 | goto fail; | |
887 | ||
06324481 KM |
888 | /* warning!!!! We are saving the virtual ptr in the sw_data |
889 | * field as a 32bit value. Will not work on 64bit machines | |
890 | */ | |
b1cb86ae | 891 | sw_data[0] = (u32)bufptr; |
84640e27 KM |
892 | } else { |
893 | /* Allocate a secondary receive queue entry */ | |
453f85d4 | 894 | page = alloc_page(GFP_ATOMIC | GFP_DMA); |
84640e27 KM |
895 | if (unlikely(!page)) { |
896 | dev_warn_ratelimited(netcp->ndev_dev, "Secondary page alloc failed\n"); | |
897 | goto fail; | |
898 | } | |
899 | buf_len = PAGE_SIZE; | |
900 | dma = dma_map_page(netcp->dev, page, 0, buf_len, DMA_TO_DEVICE); | |
06324481 KM |
901 | /* warning!!!! We are saving the virtual ptr in the sw_data |
902 | * field as a 32bit value. Will not work on 64bit machines | |
903 | */ | |
b1cb86ae KM |
904 | sw_data[0] = (u32)page; |
905 | sw_data[1] = 0; | |
84640e27 KM |
906 | } |
907 | ||
908 | desc_info = KNAV_DMA_DESC_PS_INFO_IN_DESC; | |
909 | desc_info |= buf_len & KNAV_DMA_DESC_PKT_LEN_MASK; | |
910 | pkt_info = KNAV_DMA_DESC_HAS_EPIB; | |
911 | pkt_info |= KNAV_DMA_NUM_PS_WORDS << KNAV_DMA_DESC_PSLEN_SHIFT; | |
912 | pkt_info |= (netcp->rx_queue_id & KNAV_DMA_DESC_RETQ_MASK) << | |
913 | KNAV_DMA_DESC_RETQ_SHIFT; | |
914 | set_org_pkt_info(dma, buf_len, hwdesc); | |
06324481 KM |
915 | SET_SW_DATA0(sw_data[0], hwdesc); |
916 | SET_SW_DATA1(sw_data[1], hwdesc); | |
84640e27 KM |
917 | set_desc_info(desc_info, pkt_info, hwdesc); |
918 | ||
919 | /* Push to FDQs */ | |
920 | knav_pool_desc_map(netcp->rx_pool, hwdesc, sizeof(*hwdesc), &dma, | |
921 | &dma_sz); | |
922 | knav_queue_push(netcp->rx_fdq[fdq], dma, sizeof(*hwdesc), 0); | |
e558b1fb | 923 | return 0; |
84640e27 KM |
924 | |
925 | fail: | |
926 | knav_pool_desc_put(netcp->rx_pool, hwdesc); | |
e558b1fb | 927 | return -ENOMEM; |
84640e27 KM |
928 | } |
929 | ||
930 | /* Refill Rx FDQ with descriptors & attached buffers */ | |
931 | static void netcp_rxpool_refill(struct netcp_intf *netcp) | |
932 | { | |
933 | u32 fdq_deficit[KNAV_DMA_FDQ_PER_CHAN] = {0}; | |
e558b1fb | 934 | int i, ret = 0; |
84640e27 KM |
935 | |
936 | /* Calculate the FDQ deficit and refill */ | |
937 | for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN && netcp->rx_fdq[i]; i++) { | |
938 | fdq_deficit[i] = netcp->rx_queue_depths[i] - | |
939 | knav_queue_get_count(netcp->rx_fdq[i]); | |
940 | ||
e558b1fb KM |
941 | while (fdq_deficit[i]-- && !ret) |
942 | ret = netcp_allocate_rx_buf(netcp, i); | |
84640e27 KM |
943 | } /* end for fdqs */ |
944 | } | |
945 | ||
946 | /* NAPI poll */ | |
947 | static int netcp_rx_poll(struct napi_struct *napi, int budget) | |
948 | { | |
949 | struct netcp_intf *netcp = container_of(napi, struct netcp_intf, | |
950 | rx_napi); | |
951 | unsigned int packets; | |
952 | ||
953 | packets = netcp_process_rx_packets(netcp, budget); | |
954 | ||
99f8ef5d | 955 | netcp_rxpool_refill(netcp); |
84640e27 | 956 | if (packets < budget) { |
6ad20165 | 957 | napi_complete_done(&netcp->rx_napi, packets); |
84640e27 KM |
958 | knav_queue_enable_notify(netcp->rx_queue); |
959 | } | |
960 | ||
84640e27 KM |
961 | return packets; |
962 | } | |
963 | ||
964 | static void netcp_rx_notify(void *arg) | |
965 | { | |
966 | struct netcp_intf *netcp = arg; | |
967 | ||
968 | knav_queue_disable_notify(netcp->rx_queue); | |
969 | napi_schedule(&netcp->rx_napi); | |
970 | } | |
971 | ||
972 | static void netcp_free_tx_desc_chain(struct netcp_intf *netcp, | |
973 | struct knav_dma_desc *desc, | |
974 | unsigned int desc_sz) | |
975 | { | |
976 | struct knav_dma_desc *ndesc = desc; | |
977 | dma_addr_t dma_desc, dma_buf; | |
978 | unsigned int buf_len; | |
979 | ||
980 | while (ndesc) { | |
981 | get_pkt_info(&dma_buf, &buf_len, &dma_desc, ndesc); | |
982 | ||
983 | if (dma_buf && buf_len) | |
984 | dma_unmap_single(netcp->dev, dma_buf, buf_len, | |
985 | DMA_TO_DEVICE); | |
986 | else | |
89907779 AB |
987 | dev_warn(netcp->ndev_dev, "bad Tx desc buf(%pad), len(%d)\n", |
988 | &dma_buf, buf_len); | |
84640e27 KM |
989 | |
990 | knav_pool_desc_put(netcp->tx_pool, ndesc); | |
991 | ndesc = NULL; | |
992 | if (dma_desc) { | |
993 | ndesc = knav_pool_desc_unmap(netcp->tx_pool, dma_desc, | |
994 | desc_sz); | |
995 | if (!ndesc) | |
996 | dev_err(netcp->ndev_dev, "failed to unmap Tx desc\n"); | |
997 | } | |
998 | } | |
999 | } | |
1000 | ||
1001 | static int netcp_process_tx_compl_packets(struct netcp_intf *netcp, | |
1002 | unsigned int budget) | |
1003 | { | |
6a8162e9 | 1004 | struct netcp_stats *tx_stats = &netcp->stats; |
84640e27 | 1005 | struct knav_dma_desc *desc; |
6246168b | 1006 | struct netcp_tx_cb *tx_cb; |
84640e27 KM |
1007 | struct sk_buff *skb; |
1008 | unsigned int dma_sz; | |
1009 | dma_addr_t dma; | |
1010 | int pkts = 0; | |
84640e27 KM |
1011 | |
1012 | while (budget--) { | |
1013 | dma = knav_queue_pop(netcp->tx_compl_q, &dma_sz); | |
1014 | if (!dma) | |
1015 | break; | |
1016 | desc = knav_pool_desc_unmap(netcp->tx_pool, dma, dma_sz); | |
1017 | if (unlikely(!desc)) { | |
1018 | dev_err(netcp->ndev_dev, "failed to unmap Tx desc\n"); | |
6a8162e9 | 1019 | tx_stats->tx_errors++; |
84640e27 KM |
1020 | continue; |
1021 | } | |
1022 | ||
06324481 KM |
1023 | /* warning!!!! We are retrieving the virtual ptr in the sw_data |
1024 | * field as a 32bit value. Will not work on 64bit machines | |
1025 | */ | |
1026 | skb = (struct sk_buff *)GET_SW_DATA0(desc); | |
84640e27 KM |
1027 | netcp_free_tx_desc_chain(netcp, desc, dma_sz); |
1028 | if (!skb) { | |
1029 | dev_err(netcp->ndev_dev, "No skb in Tx desc\n"); | |
6a8162e9 | 1030 | tx_stats->tx_errors++; |
84640e27 KM |
1031 | continue; |
1032 | } | |
1033 | ||
6246168b WK |
1034 | tx_cb = (struct netcp_tx_cb *)skb->cb; |
1035 | if (tx_cb->txtstamp) | |
1036 | tx_cb->txtstamp(tx_cb->ts_context, skb); | |
1037 | ||
84640e27 KM |
1038 | if (netif_subqueue_stopped(netcp->ndev, skb) && |
1039 | netif_running(netcp->ndev) && | |
1040 | (knav_pool_count(netcp->tx_pool) > | |
1041 | netcp->tx_resume_threshold)) { | |
1042 | u16 subqueue = skb_get_queue_mapping(skb); | |
1043 | ||
1044 | netif_wake_subqueue(netcp->ndev, subqueue); | |
1045 | } | |
1046 | ||
6a8162e9 MS |
1047 | u64_stats_update_begin(&tx_stats->syncp_tx); |
1048 | tx_stats->tx_packets++; | |
1049 | tx_stats->tx_bytes += skb->len; | |
1050 | u64_stats_update_end(&tx_stats->syncp_tx); | |
84640e27 KM |
1051 | dev_kfree_skb(skb); |
1052 | pkts++; | |
1053 | } | |
1054 | return pkts; | |
1055 | } | |
1056 | ||
1057 | static int netcp_tx_poll(struct napi_struct *napi, int budget) | |
1058 | { | |
1059 | int packets; | |
1060 | struct netcp_intf *netcp = container_of(napi, struct netcp_intf, | |
1061 | tx_napi); | |
1062 | ||
1063 | packets = netcp_process_tx_compl_packets(netcp, budget); | |
1064 | if (packets < budget) { | |
1065 | napi_complete(&netcp->tx_napi); | |
1066 | knav_queue_enable_notify(netcp->tx_compl_q); | |
1067 | } | |
1068 | ||
1069 | return packets; | |
1070 | } | |
1071 | ||
1072 | static void netcp_tx_notify(void *arg) | |
1073 | { | |
1074 | struct netcp_intf *netcp = arg; | |
1075 | ||
1076 | knav_queue_disable_notify(netcp->tx_compl_q); | |
1077 | napi_schedule(&netcp->tx_napi); | |
1078 | } | |
1079 | ||
1080 | static struct knav_dma_desc* | |
1081 | netcp_tx_map_skb(struct sk_buff *skb, struct netcp_intf *netcp) | |
1082 | { | |
1083 | struct knav_dma_desc *desc, *ndesc, *pdesc; | |
1084 | unsigned int pkt_len = skb_headlen(skb); | |
1085 | struct device *dev = netcp->dev; | |
1086 | dma_addr_t dma_addr; | |
1087 | unsigned int dma_sz; | |
1088 | int i; | |
1089 | ||
1090 | /* Map the linear buffer */ | |
1091 | dma_addr = dma_map_single(dev, skb->data, pkt_len, DMA_TO_DEVICE); | |
866b8b18 | 1092 | if (unlikely(dma_mapping_error(dev, dma_addr))) { |
84640e27 KM |
1093 | dev_err(netcp->ndev_dev, "Failed to map skb buffer\n"); |
1094 | return NULL; | |
1095 | } | |
1096 | ||
1097 | desc = knav_pool_desc_get(netcp->tx_pool); | |
bf69a3b6 | 1098 | if (IS_ERR_OR_NULL(desc)) { |
84640e27 KM |
1099 | dev_err(netcp->ndev_dev, "out of TX desc\n"); |
1100 | dma_unmap_single(dev, dma_addr, pkt_len, DMA_TO_DEVICE); | |
1101 | return NULL; | |
1102 | } | |
1103 | ||
1104 | set_pkt_info(dma_addr, pkt_len, 0, desc); | |
1105 | if (skb_is_nonlinear(skb)) { | |
1106 | prefetchw(skb_shinfo(skb)); | |
1107 | } else { | |
1108 | desc->next_desc = 0; | |
1109 | goto upd_pkt_len; | |
1110 | } | |
1111 | ||
1112 | pdesc = desc; | |
1113 | ||
1114 | /* Handle the case where skb is fragmented in pages */ | |
1115 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
1116 | skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; | |
1117 | struct page *page = skb_frag_page(frag); | |
b54c9d5b | 1118 | u32 page_offset = skb_frag_off(frag); |
84640e27 KM |
1119 | u32 buf_len = skb_frag_size(frag); |
1120 | dma_addr_t desc_dma; | |
89907779 | 1121 | u32 desc_dma_32; |
84640e27 KM |
1122 | |
1123 | dma_addr = dma_map_page(dev, page, page_offset, buf_len, | |
1124 | DMA_TO_DEVICE); | |
1125 | if (unlikely(!dma_addr)) { | |
1126 | dev_err(netcp->ndev_dev, "Failed to map skb page\n"); | |
1127 | goto free_descs; | |
1128 | } | |
1129 | ||
1130 | ndesc = knav_pool_desc_get(netcp->tx_pool); | |
bf69a3b6 | 1131 | if (IS_ERR_OR_NULL(ndesc)) { |
84640e27 KM |
1132 | dev_err(netcp->ndev_dev, "out of TX desc for frags\n"); |
1133 | dma_unmap_page(dev, dma_addr, buf_len, DMA_TO_DEVICE); | |
1134 | goto free_descs; | |
1135 | } | |
1136 | ||
89907779 | 1137 | desc_dma = knav_pool_desc_virt_to_dma(netcp->tx_pool, ndesc); |
84640e27 | 1138 | set_pkt_info(dma_addr, buf_len, 0, ndesc); |
89907779 AB |
1139 | desc_dma_32 = (u32)desc_dma; |
1140 | set_words(&desc_dma_32, 1, &pdesc->next_desc); | |
84640e27 KM |
1141 | pkt_len += buf_len; |
1142 | if (pdesc != desc) | |
1143 | knav_pool_desc_map(netcp->tx_pool, pdesc, | |
1144 | sizeof(*pdesc), &desc_dma, &dma_sz); | |
1145 | pdesc = ndesc; | |
1146 | } | |
1147 | if (pdesc != desc) | |
1148 | knav_pool_desc_map(netcp->tx_pool, pdesc, sizeof(*pdesc), | |
1149 | &dma_addr, &dma_sz); | |
1150 | ||
1151 | /* frag list based linkage is not supported for now. */ | |
1152 | if (skb_shinfo(skb)->frag_list) { | |
1153 | dev_err_ratelimited(netcp->ndev_dev, "NETIF_F_FRAGLIST not supported\n"); | |
1154 | goto free_descs; | |
1155 | } | |
1156 | ||
1157 | upd_pkt_len: | |
1158 | WARN_ON(pkt_len != skb->len); | |
1159 | ||
1160 | pkt_len &= KNAV_DMA_DESC_PKT_LEN_MASK; | |
1161 | set_words(&pkt_len, 1, &desc->desc_info); | |
1162 | return desc; | |
1163 | ||
1164 | free_descs: | |
1165 | netcp_free_tx_desc_chain(netcp, desc, sizeof(*desc)); | |
1166 | return NULL; | |
1167 | } | |
1168 | ||
1169 | static int netcp_tx_submit_skb(struct netcp_intf *netcp, | |
1170 | struct sk_buff *skb, | |
1171 | struct knav_dma_desc *desc) | |
1172 | { | |
1173 | struct netcp_tx_pipe *tx_pipe = NULL; | |
1174 | struct netcp_hook_list *tx_hook; | |
1175 | struct netcp_packet p_info; | |
6246168b | 1176 | struct netcp_tx_cb *tx_cb; |
84640e27 KM |
1177 | unsigned int dma_sz; |
1178 | dma_addr_t dma; | |
e170f409 | 1179 | u32 tmp = 0; |
84640e27 KM |
1180 | int ret = 0; |
1181 | ||
1182 | p_info.netcp = netcp; | |
1183 | p_info.skb = skb; | |
1184 | p_info.tx_pipe = NULL; | |
1185 | p_info.psdata_len = 0; | |
1186 | p_info.ts_context = NULL; | |
6246168b | 1187 | p_info.txtstamp = NULL; |
84640e27 | 1188 | p_info.epib = desc->epib; |
9dd2d6c5 AB |
1189 | p_info.psdata = (u32 __force *)desc->psdata; |
1190 | memset(p_info.epib, 0, KNAV_DMA_NUM_EPIB_WORDS * sizeof(__le32)); | |
84640e27 KM |
1191 | |
1192 | /* Find out where to inject the packet for transmission */ | |
1193 | list_for_each_entry(tx_hook, &netcp->txhook_list_head, list) { | |
1194 | ret = tx_hook->hook_rtn(tx_hook->order, tx_hook->hook_data, | |
1195 | &p_info); | |
1196 | if (unlikely(ret != 0)) { | |
1197 | dev_err(netcp->ndev_dev, "TX hook %d rejected the packet with reason(%d)\n", | |
1198 | tx_hook->order, ret); | |
1199 | ret = (ret < 0) ? ret : NETDEV_TX_OK; | |
1200 | goto out; | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | /* Make sure some TX hook claimed the packet */ | |
1205 | tx_pipe = p_info.tx_pipe; | |
1206 | if (!tx_pipe) { | |
1207 | dev_err(netcp->ndev_dev, "No TX hook claimed the packet!\n"); | |
1208 | ret = -ENXIO; | |
1209 | goto out; | |
1210 | } | |
1211 | ||
6246168b WK |
1212 | tx_cb = (struct netcp_tx_cb *)skb->cb; |
1213 | tx_cb->ts_context = p_info.ts_context; | |
1214 | tx_cb->txtstamp = p_info.txtstamp; | |
1215 | ||
84640e27 KM |
1216 | /* update descriptor */ |
1217 | if (p_info.psdata_len) { | |
9dd2d6c5 AB |
1218 | /* psdata points to both native-endian and device-endian data */ |
1219 | __le32 *psdata = (void __force *)p_info.psdata; | |
84640e27 | 1220 | |
aa255101 KM |
1221 | set_words((u32 *)psdata + |
1222 | (KNAV_DMA_NUM_PS_WORDS - p_info.psdata_len), | |
1223 | p_info.psdata_len, psdata); | |
e170f409 | 1224 | tmp |= (p_info.psdata_len & KNAV_DMA_DESC_PSLEN_MASK) << |
84640e27 KM |
1225 | KNAV_DMA_DESC_PSLEN_SHIFT; |
1226 | } | |
1227 | ||
e170f409 | 1228 | tmp |= KNAV_DMA_DESC_HAS_EPIB | |
84640e27 | 1229 | ((netcp->tx_compl_qid & KNAV_DMA_DESC_RETQ_MASK) << |
e170f409 | 1230 | KNAV_DMA_DESC_RETQ_SHIFT); |
84640e27 | 1231 | |
e170f409 KM |
1232 | if (!(tx_pipe->flags & SWITCH_TO_PORT_IN_TAGINFO)) { |
1233 | tmp |= ((tx_pipe->switch_to_port & KNAV_DMA_DESC_PSFLAG_MASK) << | |
1234 | KNAV_DMA_DESC_PSFLAG_SHIFT); | |
1235 | } | |
1236 | ||
1237 | set_words(&tmp, 1, &desc->packet_info); | |
06324481 KM |
1238 | /* warning!!!! We are saving the virtual ptr in the sw_data |
1239 | * field as a 32bit value. Will not work on 64bit machines | |
1240 | */ | |
1241 | SET_SW_DATA0((u32)skb, desc); | |
84640e27 | 1242 | |
e170f409 KM |
1243 | if (tx_pipe->flags & SWITCH_TO_PORT_IN_TAGINFO) { |
1244 | tmp = tx_pipe->switch_to_port; | |
89907779 | 1245 | set_words(&tmp, 1, &desc->tag_info); |
e170f409 KM |
1246 | } |
1247 | ||
84640e27 KM |
1248 | /* submit packet descriptor */ |
1249 | ret = knav_pool_desc_map(netcp->tx_pool, desc, sizeof(*desc), &dma, | |
1250 | &dma_sz); | |
1251 | if (unlikely(ret)) { | |
1252 | dev_err(netcp->ndev_dev, "%s() failed to map desc\n", __func__); | |
1253 | ret = -ENOMEM; | |
1254 | goto out; | |
1255 | } | |
1256 | skb_tx_timestamp(skb); | |
1257 | knav_queue_push(tx_pipe->dma_queue, dma, dma_sz, 0); | |
1258 | ||
1259 | out: | |
1260 | return ret; | |
1261 | } | |
1262 | ||
1263 | /* Submit the packet */ | |
63fe6ff6 | 1264 | static netdev_tx_t netcp_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev) |
84640e27 KM |
1265 | { |
1266 | struct netcp_intf *netcp = netdev_priv(ndev); | |
6a8162e9 | 1267 | struct netcp_stats *tx_stats = &netcp->stats; |
84640e27 KM |
1268 | int subqueue = skb_get_queue_mapping(skb); |
1269 | struct knav_dma_desc *desc; | |
1270 | int desc_count, ret = 0; | |
1271 | ||
1272 | if (unlikely(skb->len <= 0)) { | |
1273 | dev_kfree_skb(skb); | |
1274 | return NETDEV_TX_OK; | |
1275 | } | |
1276 | ||
1277 | if (unlikely(skb->len < NETCP_MIN_PACKET_SIZE)) { | |
1278 | ret = skb_padto(skb, NETCP_MIN_PACKET_SIZE); | |
1279 | if (ret < 0) { | |
1280 | /* If we get here, the skb has already been dropped */ | |
1281 | dev_warn(netcp->ndev_dev, "padding failed (%d), packet dropped\n", | |
1282 | ret); | |
6a8162e9 | 1283 | tx_stats->tx_dropped++; |
84640e27 KM |
1284 | return ret; |
1285 | } | |
1286 | skb->len = NETCP_MIN_PACKET_SIZE; | |
1287 | } | |
1288 | ||
1289 | desc = netcp_tx_map_skb(skb, netcp); | |
1290 | if (unlikely(!desc)) { | |
1291 | netif_stop_subqueue(ndev, subqueue); | |
1292 | ret = -ENOBUFS; | |
1293 | goto drop; | |
1294 | } | |
1295 | ||
1296 | ret = netcp_tx_submit_skb(netcp, skb, desc); | |
1297 | if (ret) | |
1298 | goto drop; | |
1299 | ||
84640e27 KM |
1300 | /* Check Tx pool count & stop subqueue if needed */ |
1301 | desc_count = knav_pool_count(netcp->tx_pool); | |
1302 | if (desc_count < netcp->tx_pause_threshold) { | |
1303 | dev_dbg(netcp->ndev_dev, "pausing tx, count(%d)\n", desc_count); | |
1304 | netif_stop_subqueue(ndev, subqueue); | |
1305 | } | |
1306 | return NETDEV_TX_OK; | |
1307 | ||
1308 | drop: | |
6a8162e9 | 1309 | tx_stats->tx_dropped++; |
84640e27 KM |
1310 | if (desc) |
1311 | netcp_free_tx_desc_chain(netcp, desc, sizeof(*desc)); | |
1312 | dev_kfree_skb(skb); | |
1313 | return ret; | |
1314 | } | |
1315 | ||
1316 | int netcp_txpipe_close(struct netcp_tx_pipe *tx_pipe) | |
1317 | { | |
1318 | if (tx_pipe->dma_channel) { | |
1319 | knav_dma_close_channel(tx_pipe->dma_channel); | |
1320 | tx_pipe->dma_channel = NULL; | |
1321 | } | |
1322 | return 0; | |
1323 | } | |
58c11b5f | 1324 | EXPORT_SYMBOL_GPL(netcp_txpipe_close); |
84640e27 KM |
1325 | |
1326 | int netcp_txpipe_open(struct netcp_tx_pipe *tx_pipe) | |
1327 | { | |
1328 | struct device *dev = tx_pipe->netcp_device->device; | |
1329 | struct knav_dma_cfg config; | |
1330 | int ret = 0; | |
1331 | u8 name[16]; | |
1332 | ||
1333 | memset(&config, 0, sizeof(config)); | |
1334 | config.direction = DMA_MEM_TO_DEV; | |
1335 | config.u.tx.filt_einfo = false; | |
1336 | config.u.tx.filt_pswords = false; | |
1337 | config.u.tx.priority = DMA_PRIO_MED_L; | |
1338 | ||
1339 | tx_pipe->dma_channel = knav_dma_open_channel(dev, | |
1340 | tx_pipe->dma_chan_name, &config); | |
5b6cb43b | 1341 | if (IS_ERR(tx_pipe->dma_channel)) { |
84640e27 KM |
1342 | dev_err(dev, "failed opening tx chan(%s)\n", |
1343 | tx_pipe->dma_chan_name); | |
5b6cb43b | 1344 | ret = PTR_ERR(tx_pipe->dma_channel); |
84640e27 KM |
1345 | goto err; |
1346 | } | |
1347 | ||
1348 | snprintf(name, sizeof(name), "tx-pipe-%s", dev_name(dev)); | |
1349 | tx_pipe->dma_queue = knav_queue_open(name, tx_pipe->dma_queue_id, | |
1350 | KNAV_QUEUE_SHARED); | |
1351 | if (IS_ERR(tx_pipe->dma_queue)) { | |
ddb6e00f CJ |
1352 | dev_err(dev, "Could not open DMA queue for channel \"%s\": %pe\n", |
1353 | name, tx_pipe->dma_queue); | |
84640e27 KM |
1354 | ret = PTR_ERR(tx_pipe->dma_queue); |
1355 | goto err; | |
1356 | } | |
1357 | ||
1358 | dev_dbg(dev, "opened tx pipe %s\n", name); | |
1359 | return 0; | |
1360 | ||
1361 | err: | |
1362 | if (!IS_ERR_OR_NULL(tx_pipe->dma_channel)) | |
1363 | knav_dma_close_channel(tx_pipe->dma_channel); | |
1364 | tx_pipe->dma_channel = NULL; | |
1365 | return ret; | |
1366 | } | |
58c11b5f | 1367 | EXPORT_SYMBOL_GPL(netcp_txpipe_open); |
84640e27 KM |
1368 | |
1369 | int netcp_txpipe_init(struct netcp_tx_pipe *tx_pipe, | |
1370 | struct netcp_device *netcp_device, | |
1371 | const char *dma_chan_name, unsigned int dma_queue_id) | |
1372 | { | |
1373 | memset(tx_pipe, 0, sizeof(*tx_pipe)); | |
1374 | tx_pipe->netcp_device = netcp_device; | |
1375 | tx_pipe->dma_chan_name = dma_chan_name; | |
1376 | tx_pipe->dma_queue_id = dma_queue_id; | |
1377 | return 0; | |
1378 | } | |
58c11b5f | 1379 | EXPORT_SYMBOL_GPL(netcp_txpipe_init); |
84640e27 KM |
1380 | |
1381 | static struct netcp_addr *netcp_addr_find(struct netcp_intf *netcp, | |
1382 | const u8 *addr, | |
1383 | enum netcp_addr_type type) | |
1384 | { | |
1385 | struct netcp_addr *naddr; | |
1386 | ||
1387 | list_for_each_entry(naddr, &netcp->addr_list, node) { | |
1388 | if (naddr->type != type) | |
1389 | continue; | |
1390 | if (addr && memcmp(addr, naddr->addr, ETH_ALEN)) | |
1391 | continue; | |
1392 | return naddr; | |
1393 | } | |
1394 | ||
1395 | return NULL; | |
1396 | } | |
1397 | ||
1398 | static struct netcp_addr *netcp_addr_add(struct netcp_intf *netcp, | |
1399 | const u8 *addr, | |
1400 | enum netcp_addr_type type) | |
1401 | { | |
1402 | struct netcp_addr *naddr; | |
1403 | ||
1404 | naddr = devm_kmalloc(netcp->dev, sizeof(*naddr), GFP_ATOMIC); | |
1405 | if (!naddr) | |
1406 | return NULL; | |
1407 | ||
1408 | naddr->type = type; | |
1409 | naddr->flags = 0; | |
1410 | naddr->netcp = netcp; | |
1411 | if (addr) | |
1412 | ether_addr_copy(naddr->addr, addr); | |
1413 | else | |
c7bf7169 | 1414 | eth_zero_addr(naddr->addr); |
84640e27 KM |
1415 | list_add_tail(&naddr->node, &netcp->addr_list); |
1416 | ||
1417 | return naddr; | |
1418 | } | |
1419 | ||
1420 | static void netcp_addr_del(struct netcp_intf *netcp, struct netcp_addr *naddr) | |
1421 | { | |
1422 | list_del(&naddr->node); | |
1423 | devm_kfree(netcp->dev, naddr); | |
1424 | } | |
1425 | ||
1426 | static void netcp_addr_clear_mark(struct netcp_intf *netcp) | |
1427 | { | |
1428 | struct netcp_addr *naddr; | |
1429 | ||
1430 | list_for_each_entry(naddr, &netcp->addr_list, node) | |
1431 | naddr->flags = 0; | |
1432 | } | |
1433 | ||
1434 | static void netcp_addr_add_mark(struct netcp_intf *netcp, const u8 *addr, | |
1435 | enum netcp_addr_type type) | |
1436 | { | |
1437 | struct netcp_addr *naddr; | |
1438 | ||
1439 | naddr = netcp_addr_find(netcp, addr, type); | |
1440 | if (naddr) { | |
1441 | naddr->flags |= ADDR_VALID; | |
1442 | return; | |
1443 | } | |
1444 | ||
1445 | naddr = netcp_addr_add(netcp, addr, type); | |
1446 | if (!WARN_ON(!naddr)) | |
1447 | naddr->flags |= ADDR_NEW; | |
1448 | } | |
1449 | ||
1450 | static void netcp_addr_sweep_del(struct netcp_intf *netcp) | |
1451 | { | |
1452 | struct netcp_addr *naddr, *tmp; | |
1453 | struct netcp_intf_modpriv *priv; | |
1454 | struct netcp_module *module; | |
1455 | int error; | |
1456 | ||
1457 | list_for_each_entry_safe(naddr, tmp, &netcp->addr_list, node) { | |
1458 | if (naddr->flags & (ADDR_VALID | ADDR_NEW)) | |
1459 | continue; | |
1460 | dev_dbg(netcp->ndev_dev, "deleting address %pM, type %x\n", | |
1461 | naddr->addr, naddr->type); | |
84640e27 KM |
1462 | for_each_module(netcp, priv) { |
1463 | module = priv->netcp_module; | |
1464 | if (!module->del_addr) | |
1465 | continue; | |
1466 | error = module->del_addr(priv->module_priv, | |
1467 | naddr); | |
1468 | WARN_ON(error); | |
1469 | } | |
84640e27 KM |
1470 | netcp_addr_del(netcp, naddr); |
1471 | } | |
1472 | } | |
1473 | ||
1474 | static void netcp_addr_sweep_add(struct netcp_intf *netcp) | |
1475 | { | |
1476 | struct netcp_addr *naddr, *tmp; | |
1477 | struct netcp_intf_modpriv *priv; | |
1478 | struct netcp_module *module; | |
1479 | int error; | |
1480 | ||
1481 | list_for_each_entry_safe(naddr, tmp, &netcp->addr_list, node) { | |
1482 | if (!(naddr->flags & ADDR_NEW)) | |
1483 | continue; | |
1484 | dev_dbg(netcp->ndev_dev, "adding address %pM, type %x\n", | |
1485 | naddr->addr, naddr->type); | |
8ceaf361 | 1486 | |
84640e27 KM |
1487 | for_each_module(netcp, priv) { |
1488 | module = priv->netcp_module; | |
1489 | if (!module->add_addr) | |
1490 | continue; | |
1491 | error = module->add_addr(priv->module_priv, naddr); | |
1492 | WARN_ON(error); | |
1493 | } | |
84640e27 KM |
1494 | } |
1495 | } | |
1496 | ||
0542a87c WK |
1497 | static int netcp_set_promiscuous(struct netcp_intf *netcp, bool promisc) |
1498 | { | |
1499 | struct netcp_intf_modpriv *priv; | |
1500 | struct netcp_module *module; | |
1501 | int error; | |
1502 | ||
1503 | for_each_module(netcp, priv) { | |
1504 | module = priv->netcp_module; | |
1505 | if (!module->set_rx_mode) | |
1506 | continue; | |
1507 | ||
1508 | error = module->set_rx_mode(priv->module_priv, promisc); | |
1509 | if (error) | |
1510 | return error; | |
1511 | } | |
1512 | return 0; | |
1513 | } | |
1514 | ||
84640e27 KM |
1515 | static void netcp_set_rx_mode(struct net_device *ndev) |
1516 | { | |
1517 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1518 | struct netdev_hw_addr *ndev_addr; | |
1519 | bool promisc; | |
1520 | ||
1521 | promisc = (ndev->flags & IFF_PROMISC || | |
1522 | ndev->flags & IFF_ALLMULTI || | |
1523 | netdev_mc_count(ndev) > NETCP_MAX_MCAST_ADDR); | |
1524 | ||
8ceaf361 | 1525 | spin_lock(&netcp->lock); |
84640e27 KM |
1526 | /* first clear all marks */ |
1527 | netcp_addr_clear_mark(netcp); | |
1528 | ||
1529 | /* next add new entries, mark existing ones */ | |
1530 | netcp_addr_add_mark(netcp, ndev->broadcast, ADDR_BCAST); | |
1531 | for_each_dev_addr(ndev, ndev_addr) | |
1532 | netcp_addr_add_mark(netcp, ndev_addr->addr, ADDR_DEV); | |
1533 | netdev_for_each_uc_addr(ndev_addr, ndev) | |
1534 | netcp_addr_add_mark(netcp, ndev_addr->addr, ADDR_UCAST); | |
1535 | netdev_for_each_mc_addr(ndev_addr, ndev) | |
1536 | netcp_addr_add_mark(netcp, ndev_addr->addr, ADDR_MCAST); | |
1537 | ||
1538 | if (promisc) | |
1539 | netcp_addr_add_mark(netcp, NULL, ADDR_ANY); | |
1540 | ||
1541 | /* finally sweep and callout into modules */ | |
1542 | netcp_addr_sweep_del(netcp); | |
1543 | netcp_addr_sweep_add(netcp); | |
0542a87c | 1544 | netcp_set_promiscuous(netcp, promisc); |
8ceaf361 | 1545 | spin_unlock(&netcp->lock); |
84640e27 KM |
1546 | } |
1547 | ||
1548 | static void netcp_free_navigator_resources(struct netcp_intf *netcp) | |
1549 | { | |
1550 | int i; | |
1551 | ||
1552 | if (netcp->rx_channel) { | |
1553 | knav_dma_close_channel(netcp->rx_channel); | |
1554 | netcp->rx_channel = NULL; | |
1555 | } | |
1556 | ||
1557 | if (!IS_ERR_OR_NULL(netcp->rx_pool)) | |
1558 | netcp_rxpool_free(netcp); | |
1559 | ||
1560 | if (!IS_ERR_OR_NULL(netcp->rx_queue)) { | |
1561 | knav_queue_close(netcp->rx_queue); | |
1562 | netcp->rx_queue = NULL; | |
1563 | } | |
1564 | ||
1565 | for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN && | |
1566 | !IS_ERR_OR_NULL(netcp->rx_fdq[i]) ; ++i) { | |
1567 | knav_queue_close(netcp->rx_fdq[i]); | |
1568 | netcp->rx_fdq[i] = NULL; | |
1569 | } | |
1570 | ||
1571 | if (!IS_ERR_OR_NULL(netcp->tx_compl_q)) { | |
1572 | knav_queue_close(netcp->tx_compl_q); | |
1573 | netcp->tx_compl_q = NULL; | |
1574 | } | |
1575 | ||
1576 | if (!IS_ERR_OR_NULL(netcp->tx_pool)) { | |
1577 | knav_pool_destroy(netcp->tx_pool); | |
1578 | netcp->tx_pool = NULL; | |
1579 | } | |
1580 | } | |
1581 | ||
1582 | static int netcp_setup_navigator_resources(struct net_device *ndev) | |
1583 | { | |
1584 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1585 | struct knav_queue_notify_config notify_cfg; | |
1586 | struct knav_dma_cfg config; | |
1587 | u32 last_fdq = 0; | |
1588 | u8 name[16]; | |
1589 | int ret; | |
1590 | int i; | |
1591 | ||
1592 | /* Create Rx/Tx descriptor pools */ | |
1593 | snprintf(name, sizeof(name), "rx-pool-%s", ndev->name); | |
1594 | netcp->rx_pool = knav_pool_create(name, netcp->rx_pool_size, | |
1595 | netcp->rx_pool_region_id); | |
1596 | if (IS_ERR_OR_NULL(netcp->rx_pool)) { | |
1597 | dev_err(netcp->ndev_dev, "Couldn't create rx pool\n"); | |
1598 | ret = PTR_ERR(netcp->rx_pool); | |
1599 | goto fail; | |
1600 | } | |
1601 | ||
1602 | snprintf(name, sizeof(name), "tx-pool-%s", ndev->name); | |
1603 | netcp->tx_pool = knav_pool_create(name, netcp->tx_pool_size, | |
1604 | netcp->tx_pool_region_id); | |
1605 | if (IS_ERR_OR_NULL(netcp->tx_pool)) { | |
1606 | dev_err(netcp->ndev_dev, "Couldn't create tx pool\n"); | |
1607 | ret = PTR_ERR(netcp->tx_pool); | |
1608 | goto fail; | |
1609 | } | |
1610 | ||
1611 | /* open Tx completion queue */ | |
1612 | snprintf(name, sizeof(name), "tx-compl-%s", ndev->name); | |
1613 | netcp->tx_compl_q = knav_queue_open(name, netcp->tx_compl_qid, 0); | |
d01eb808 | 1614 | if (IS_ERR(netcp->tx_compl_q)) { |
84640e27 KM |
1615 | ret = PTR_ERR(netcp->tx_compl_q); |
1616 | goto fail; | |
1617 | } | |
1618 | netcp->tx_compl_qid = knav_queue_get_id(netcp->tx_compl_q); | |
1619 | ||
1620 | /* Set notification for Tx completion */ | |
1621 | notify_cfg.fn = netcp_tx_notify; | |
1622 | notify_cfg.fn_arg = netcp; | |
1623 | ret = knav_queue_device_control(netcp->tx_compl_q, | |
1624 | KNAV_QUEUE_SET_NOTIFIER, | |
1625 | (unsigned long)¬ify_cfg); | |
1626 | if (ret) | |
1627 | goto fail; | |
1628 | ||
1629 | knav_queue_disable_notify(netcp->tx_compl_q); | |
1630 | ||
1631 | /* open Rx completion queue */ | |
1632 | snprintf(name, sizeof(name), "rx-compl-%s", ndev->name); | |
1633 | netcp->rx_queue = knav_queue_open(name, netcp->rx_queue_id, 0); | |
d01eb808 | 1634 | if (IS_ERR(netcp->rx_queue)) { |
84640e27 KM |
1635 | ret = PTR_ERR(netcp->rx_queue); |
1636 | goto fail; | |
1637 | } | |
1638 | netcp->rx_queue_id = knav_queue_get_id(netcp->rx_queue); | |
1639 | ||
1640 | /* Set notification for Rx completion */ | |
1641 | notify_cfg.fn = netcp_rx_notify; | |
1642 | notify_cfg.fn_arg = netcp; | |
1643 | ret = knav_queue_device_control(netcp->rx_queue, | |
1644 | KNAV_QUEUE_SET_NOTIFIER, | |
1645 | (unsigned long)¬ify_cfg); | |
1646 | if (ret) | |
1647 | goto fail; | |
1648 | ||
1649 | knav_queue_disable_notify(netcp->rx_queue); | |
1650 | ||
1651 | /* open Rx FDQs */ | |
866b8b18 WK |
1652 | for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN && netcp->rx_queue_depths[i]; |
1653 | ++i) { | |
84640e27 KM |
1654 | snprintf(name, sizeof(name), "rx-fdq-%s-%d", ndev->name, i); |
1655 | netcp->rx_fdq[i] = knav_queue_open(name, KNAV_QUEUE_GP, 0); | |
d01eb808 | 1656 | if (IS_ERR(netcp->rx_fdq[i])) { |
84640e27 KM |
1657 | ret = PTR_ERR(netcp->rx_fdq[i]); |
1658 | goto fail; | |
1659 | } | |
1660 | } | |
1661 | ||
1662 | memset(&config, 0, sizeof(config)); | |
1663 | config.direction = DMA_DEV_TO_MEM; | |
1664 | config.u.rx.einfo_present = true; | |
1665 | config.u.rx.psinfo_present = true; | |
1666 | config.u.rx.err_mode = DMA_DROP; | |
1667 | config.u.rx.desc_type = DMA_DESC_HOST; | |
1668 | config.u.rx.psinfo_at_sop = false; | |
1669 | config.u.rx.sop_offset = NETCP_SOP_OFFSET; | |
1670 | config.u.rx.dst_q = netcp->rx_queue_id; | |
1671 | config.u.rx.thresh = DMA_THRESH_NONE; | |
1672 | ||
1673 | for (i = 0; i < KNAV_DMA_FDQ_PER_CHAN; ++i) { | |
1674 | if (netcp->rx_fdq[i]) | |
1675 | last_fdq = knav_queue_get_id(netcp->rx_fdq[i]); | |
1676 | config.u.rx.fdq[i] = last_fdq; | |
1677 | } | |
1678 | ||
1679 | netcp->rx_channel = knav_dma_open_channel(netcp->netcp_device->device, | |
1680 | netcp->dma_chan_name, &config); | |
5b6cb43b | 1681 | if (IS_ERR(netcp->rx_channel)) { |
84640e27 KM |
1682 | dev_err(netcp->ndev_dev, "failed opening rx chan(%s\n", |
1683 | netcp->dma_chan_name); | |
5b6cb43b | 1684 | ret = PTR_ERR(netcp->rx_channel); |
84640e27 KM |
1685 | goto fail; |
1686 | } | |
1687 | ||
1688 | dev_dbg(netcp->ndev_dev, "opened RX channel: %p\n", netcp->rx_channel); | |
1689 | return 0; | |
1690 | ||
1691 | fail: | |
1692 | netcp_free_navigator_resources(netcp); | |
1693 | return ret; | |
1694 | } | |
1695 | ||
1696 | /* Open the device */ | |
1697 | static int netcp_ndo_open(struct net_device *ndev) | |
1698 | { | |
1699 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1700 | struct netcp_intf_modpriv *intf_modpriv; | |
1701 | struct netcp_module *module; | |
1702 | int ret; | |
1703 | ||
1704 | netif_carrier_off(ndev); | |
1705 | ret = netcp_setup_navigator_resources(ndev); | |
1706 | if (ret) { | |
1707 | dev_err(netcp->ndev_dev, "Failed to setup navigator resources\n"); | |
1708 | goto fail; | |
1709 | } | |
1710 | ||
84640e27 KM |
1711 | for_each_module(netcp, intf_modpriv) { |
1712 | module = intf_modpriv->netcp_module; | |
1713 | if (module->open) { | |
1714 | ret = module->open(intf_modpriv->module_priv, ndev); | |
1715 | if (ret != 0) { | |
1716 | dev_err(netcp->ndev_dev, "module open failed\n"); | |
1717 | goto fail_open; | |
1718 | } | |
1719 | } | |
1720 | } | |
84640e27 | 1721 | |
84640e27 KM |
1722 | napi_enable(&netcp->rx_napi); |
1723 | napi_enable(&netcp->tx_napi); | |
1724 | knav_queue_enable_notify(netcp->tx_compl_q); | |
1725 | knav_queue_enable_notify(netcp->rx_queue); | |
194ac06e | 1726 | netcp_rxpool_refill(netcp); |
84640e27 KM |
1727 | netif_tx_wake_all_queues(ndev); |
1728 | dev_dbg(netcp->ndev_dev, "netcp device %s opened\n", ndev->name); | |
1729 | return 0; | |
1730 | ||
1731 | fail_open: | |
1732 | for_each_module(netcp, intf_modpriv) { | |
1733 | module = intf_modpriv->netcp_module; | |
1734 | if (module->close) | |
1735 | module->close(intf_modpriv->module_priv, ndev); | |
1736 | } | |
84640e27 KM |
1737 | |
1738 | fail: | |
1739 | netcp_free_navigator_resources(netcp); | |
1740 | return ret; | |
1741 | } | |
1742 | ||
1743 | /* Close the device */ | |
1744 | static int netcp_ndo_stop(struct net_device *ndev) | |
1745 | { | |
1746 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1747 | struct netcp_intf_modpriv *intf_modpriv; | |
1748 | struct netcp_module *module; | |
1749 | int err = 0; | |
1750 | ||
1751 | netif_tx_stop_all_queues(ndev); | |
1752 | netif_carrier_off(ndev); | |
1753 | netcp_addr_clear_mark(netcp); | |
1754 | netcp_addr_sweep_del(netcp); | |
1755 | knav_queue_disable_notify(netcp->rx_queue); | |
1756 | knav_queue_disable_notify(netcp->tx_compl_q); | |
1757 | napi_disable(&netcp->rx_napi); | |
1758 | napi_disable(&netcp->tx_napi); | |
1759 | ||
84640e27 KM |
1760 | for_each_module(netcp, intf_modpriv) { |
1761 | module = intf_modpriv->netcp_module; | |
1762 | if (module->close) { | |
1763 | err = module->close(intf_modpriv->module_priv, ndev); | |
1764 | if (err != 0) | |
1765 | dev_err(netcp->ndev_dev, "Close failed\n"); | |
1766 | } | |
1767 | } | |
84640e27 KM |
1768 | |
1769 | /* Recycle Rx descriptors from completion queue */ | |
1770 | netcp_empty_rx_queue(netcp); | |
1771 | ||
1772 | /* Recycle Tx descriptors from completion queue */ | |
1773 | netcp_process_tx_compl_packets(netcp, netcp->tx_pool_size); | |
1774 | ||
1775 | if (knav_pool_count(netcp->tx_pool) != netcp->tx_pool_size) | |
1776 | dev_err(netcp->ndev_dev, "Lost (%d) Tx descs\n", | |
1777 | netcp->tx_pool_size - knav_pool_count(netcp->tx_pool)); | |
1778 | ||
1779 | netcp_free_navigator_resources(netcp); | |
1780 | dev_dbg(netcp->ndev_dev, "netcp device %s stopped\n", ndev->name); | |
1781 | return 0; | |
1782 | } | |
1783 | ||
1784 | static int netcp_ndo_ioctl(struct net_device *ndev, | |
1785 | struct ifreq *req, int cmd) | |
1786 | { | |
1787 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1788 | struct netcp_intf_modpriv *intf_modpriv; | |
1789 | struct netcp_module *module; | |
1790 | int ret = -1, err = -EOPNOTSUPP; | |
1791 | ||
1792 | if (!netif_running(ndev)) | |
1793 | return -EINVAL; | |
1794 | ||
84640e27 KM |
1795 | for_each_module(netcp, intf_modpriv) { |
1796 | module = intf_modpriv->netcp_module; | |
1797 | if (!module->ioctl) | |
1798 | continue; | |
1799 | ||
1800 | err = module->ioctl(intf_modpriv->module_priv, req, cmd); | |
1801 | if ((err < 0) && (err != -EOPNOTSUPP)) { | |
1802 | ret = err; | |
1803 | goto out; | |
1804 | } | |
1805 | if (err == 0) | |
1806 | ret = err; | |
1807 | } | |
1808 | ||
1809 | out: | |
84640e27 KM |
1810 | return (ret == 0) ? 0 : err; |
1811 | } | |
1812 | ||
0290bd29 | 1813 | static void netcp_ndo_tx_timeout(struct net_device *ndev, unsigned int txqueue) |
84640e27 KM |
1814 | { |
1815 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1816 | unsigned int descs = knav_pool_count(netcp->tx_pool); | |
1817 | ||
1818 | dev_err(netcp->ndev_dev, "transmit timed out tx descs(%d)\n", descs); | |
1819 | netcp_process_tx_compl_packets(netcp, netcp->tx_pool_size); | |
860e9538 | 1820 | netif_trans_update(ndev); |
84640e27 KM |
1821 | netif_tx_wake_all_queues(ndev); |
1822 | } | |
1823 | ||
1824 | static int netcp_rx_add_vid(struct net_device *ndev, __be16 proto, u16 vid) | |
1825 | { | |
1826 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1827 | struct netcp_intf_modpriv *intf_modpriv; | |
1828 | struct netcp_module *module; | |
8ceaf361 | 1829 | unsigned long flags; |
84640e27 KM |
1830 | int err = 0; |
1831 | ||
1832 | dev_dbg(netcp->ndev_dev, "adding rx vlan id: %d\n", vid); | |
1833 | ||
8ceaf361 | 1834 | spin_lock_irqsave(&netcp->lock, flags); |
84640e27 KM |
1835 | for_each_module(netcp, intf_modpriv) { |
1836 | module = intf_modpriv->netcp_module; | |
1837 | if ((module->add_vid) && (vid != 0)) { | |
1838 | err = module->add_vid(intf_modpriv->module_priv, vid); | |
1839 | if (err != 0) { | |
1840 | dev_err(netcp->ndev_dev, "Could not add vlan id = %d\n", | |
1841 | vid); | |
1842 | break; | |
1843 | } | |
1844 | } | |
1845 | } | |
8ceaf361 KM |
1846 | spin_unlock_irqrestore(&netcp->lock, flags); |
1847 | ||
84640e27 KM |
1848 | return err; |
1849 | } | |
1850 | ||
1851 | static int netcp_rx_kill_vid(struct net_device *ndev, __be16 proto, u16 vid) | |
1852 | { | |
1853 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1854 | struct netcp_intf_modpriv *intf_modpriv; | |
1855 | struct netcp_module *module; | |
8ceaf361 | 1856 | unsigned long flags; |
84640e27 KM |
1857 | int err = 0; |
1858 | ||
1859 | dev_dbg(netcp->ndev_dev, "removing rx vlan id: %d\n", vid); | |
1860 | ||
8ceaf361 | 1861 | spin_lock_irqsave(&netcp->lock, flags); |
84640e27 KM |
1862 | for_each_module(netcp, intf_modpriv) { |
1863 | module = intf_modpriv->netcp_module; | |
1864 | if (module->del_vid) { | |
1865 | err = module->del_vid(intf_modpriv->module_priv, vid); | |
1866 | if (err != 0) { | |
1867 | dev_err(netcp->ndev_dev, "Could not delete vlan id = %d\n", | |
1868 | vid); | |
1869 | break; | |
1870 | } | |
1871 | } | |
1872 | } | |
8ceaf361 | 1873 | spin_unlock_irqrestore(&netcp->lock, flags); |
84640e27 KM |
1874 | return err; |
1875 | } | |
1876 | ||
2572ac53 | 1877 | static int netcp_setup_tc(struct net_device *dev, enum tc_setup_type type, |
de4784ca | 1878 | void *type_data) |
84640e27 | 1879 | { |
de4784ca | 1880 | struct tc_mqprio_qopt *mqprio = type_data; |
56f36acd | 1881 | u8 num_tc; |
84640e27 KM |
1882 | int i; |
1883 | ||
1884 | /* setup tc must be called under rtnl lock */ | |
1885 | ASSERT_RTNL(); | |
1886 | ||
575ed7d3 | 1887 | if (type != TC_SETUP_QDISC_MQPRIO) |
38cf0426 | 1888 | return -EOPNOTSUPP; |
e4c6734e | 1889 | |
de4784ca JP |
1890 | mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; |
1891 | num_tc = mqprio->num_tc; | |
56f36acd | 1892 | |
84640e27 KM |
1893 | /* Sanity-check the number of traffic classes requested */ |
1894 | if ((dev->real_num_tx_queues <= 1) || | |
56f36acd | 1895 | (dev->real_num_tx_queues < num_tc)) |
84640e27 KM |
1896 | return -EINVAL; |
1897 | ||
1898 | /* Configure traffic class to queue mappings */ | |
56f36acd AN |
1899 | if (num_tc) { |
1900 | netdev_set_num_tc(dev, num_tc); | |
1901 | for (i = 0; i < num_tc; i++) | |
84640e27 KM |
1902 | netdev_set_tc_queue(dev, i, 1, i); |
1903 | } else { | |
1904 | netdev_reset_tc(dev); | |
1905 | } | |
1906 | ||
1907 | return 0; | |
1908 | } | |
1909 | ||
380043b9 | 1910 | static void |
6a8162e9 MS |
1911 | netcp_get_stats(struct net_device *ndev, struct rtnl_link_stats64 *stats) |
1912 | { | |
1913 | struct netcp_intf *netcp = netdev_priv(ndev); | |
1914 | struct netcp_stats *p = &netcp->stats; | |
1915 | u64 rxpackets, rxbytes, txpackets, txbytes; | |
1916 | unsigned int start; | |
1917 | ||
1918 | do { | |
068c38ad | 1919 | start = u64_stats_fetch_begin(&p->syncp_rx); |
6a8162e9 MS |
1920 | rxpackets = p->rx_packets; |
1921 | rxbytes = p->rx_bytes; | |
068c38ad | 1922 | } while (u64_stats_fetch_retry(&p->syncp_rx, start)); |
6a8162e9 MS |
1923 | |
1924 | do { | |
068c38ad | 1925 | start = u64_stats_fetch_begin(&p->syncp_tx); |
6a8162e9 MS |
1926 | txpackets = p->tx_packets; |
1927 | txbytes = p->tx_bytes; | |
068c38ad | 1928 | } while (u64_stats_fetch_retry(&p->syncp_tx, start)); |
6a8162e9 MS |
1929 | |
1930 | stats->rx_packets = rxpackets; | |
1931 | stats->rx_bytes = rxbytes; | |
1932 | stats->tx_packets = txpackets; | |
1933 | stats->tx_bytes = txbytes; | |
1934 | ||
1935 | /* The following are stored as 32 bit */ | |
1936 | stats->rx_errors = p->rx_errors; | |
1937 | stats->rx_dropped = p->rx_dropped; | |
1938 | stats->tx_dropped = p->tx_dropped; | |
6a8162e9 MS |
1939 | } |
1940 | ||
84640e27 KM |
1941 | static const struct net_device_ops netcp_netdev_ops = { |
1942 | .ndo_open = netcp_ndo_open, | |
1943 | .ndo_stop = netcp_ndo_stop, | |
1944 | .ndo_start_xmit = netcp_ndo_start_xmit, | |
1945 | .ndo_set_rx_mode = netcp_set_rx_mode, | |
a7605370 | 1946 | .ndo_eth_ioctl = netcp_ndo_ioctl, |
6a8162e9 | 1947 | .ndo_get_stats64 = netcp_get_stats, |
84640e27 KM |
1948 | .ndo_set_mac_address = eth_mac_addr, |
1949 | .ndo_validate_addr = eth_validate_addr, | |
1950 | .ndo_vlan_rx_add_vid = netcp_rx_add_vid, | |
1951 | .ndo_vlan_rx_kill_vid = netcp_rx_kill_vid, | |
1952 | .ndo_tx_timeout = netcp_ndo_tx_timeout, | |
a4ea8a3d | 1953 | .ndo_select_queue = dev_pick_tx_zero, |
84640e27 KM |
1954 | .ndo_setup_tc = netcp_setup_tc, |
1955 | }; | |
1956 | ||
1957 | static int netcp_create_interface(struct netcp_device *netcp_device, | |
1958 | struct device_node *node_interface) | |
1959 | { | |
1960 | struct device *dev = netcp_device->device; | |
1961 | struct device_node *node = dev->of_node; | |
1962 | struct netcp_intf *netcp; | |
1963 | struct net_device *ndev; | |
1964 | resource_size_t size; | |
1965 | struct resource res; | |
1966 | void __iomem *efuse = NULL; | |
1967 | u32 efuse_mac = 0; | |
84640e27 KM |
1968 | u8 efuse_mac_addr[6]; |
1969 | u32 temp[2]; | |
1970 | int ret = 0; | |
1971 | ||
1972 | ndev = alloc_etherdev_mqs(sizeof(*netcp), 1, 1); | |
1973 | if (!ndev) { | |
1974 | dev_err(dev, "Error allocating netdev\n"); | |
1975 | return -ENOMEM; | |
1976 | } | |
1977 | ||
1978 | ndev->features |= NETIF_F_SG; | |
1979 | ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; | |
1980 | ndev->hw_features = ndev->features; | |
1981 | ndev->vlan_features |= NETIF_F_SG; | |
1982 | ||
44770e11 JW |
1983 | /* MTU range: 68 - 9486 */ |
1984 | ndev->min_mtu = ETH_MIN_MTU; | |
1985 | ndev->max_mtu = NETCP_MAX_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); | |
1986 | ||
84640e27 KM |
1987 | netcp = netdev_priv(ndev); |
1988 | spin_lock_init(&netcp->lock); | |
1989 | INIT_LIST_HEAD(&netcp->module_head); | |
1990 | INIT_LIST_HEAD(&netcp->txhook_list_head); | |
1991 | INIT_LIST_HEAD(&netcp->rxhook_list_head); | |
1992 | INIT_LIST_HEAD(&netcp->addr_list); | |
6a8162e9 MS |
1993 | u64_stats_init(&netcp->stats.syncp_rx); |
1994 | u64_stats_init(&netcp->stats.syncp_tx); | |
84640e27 KM |
1995 | netcp->netcp_device = netcp_device; |
1996 | netcp->dev = netcp_device->device; | |
1997 | netcp->ndev = ndev; | |
1998 | netcp->ndev_dev = &ndev->dev; | |
1999 | netcp->msg_enable = netif_msg_init(netcp_debug_level, NETCP_DEBUG); | |
2000 | netcp->tx_pause_threshold = MAX_SKB_FRAGS; | |
2001 | netcp->tx_resume_threshold = netcp->tx_pause_threshold; | |
2002 | netcp->node_interface = node_interface; | |
2003 | ||
2004 | ret = of_property_read_u32(node_interface, "efuse-mac", &efuse_mac); | |
2005 | if (efuse_mac) { | |
2006 | if (of_address_to_resource(node, NETCP_EFUSE_REG_INDEX, &res)) { | |
2007 | dev_err(dev, "could not find efuse-mac reg resource\n"); | |
2008 | ret = -ENODEV; | |
2009 | goto quit; | |
2010 | } | |
2011 | size = resource_size(&res); | |
2012 | ||
2013 | if (!devm_request_mem_region(dev, res.start, size, | |
2014 | dev_name(dev))) { | |
2015 | dev_err(dev, "could not reserve resource\n"); | |
2016 | ret = -ENOMEM; | |
2017 | goto quit; | |
2018 | } | |
2019 | ||
4bdc0d67 | 2020 | efuse = devm_ioremap(dev, res.start, size); |
84640e27 KM |
2021 | if (!efuse) { |
2022 | dev_err(dev, "could not map resource\n"); | |
2023 | devm_release_mem_region(dev, res.start, size); | |
2024 | ret = -ENOMEM; | |
2025 | goto quit; | |
2026 | } | |
2027 | ||
71382bc0 | 2028 | emac_arch_get_mac_addr(efuse_mac_addr, efuse, efuse_mac); |
84640e27 | 2029 | if (is_valid_ether_addr(efuse_mac_addr)) |
f3956ebb | 2030 | eth_hw_addr_set(ndev, efuse_mac_addr); |
84640e27 | 2031 | else |
db0dcc6a | 2032 | eth_hw_addr_random(ndev); |
84640e27 KM |
2033 | |
2034 | devm_iounmap(dev, efuse); | |
2035 | devm_release_mem_region(dev, res.start, size); | |
2036 | } else { | |
9ca01b25 | 2037 | ret = of_get_ethdev_address(node_interface, ndev); |
83216e39 | 2038 | if (ret) |
db0dcc6a | 2039 | eth_hw_addr_random(ndev); |
84640e27 KM |
2040 | } |
2041 | ||
2042 | ret = of_property_read_string(node_interface, "rx-channel", | |
2043 | &netcp->dma_chan_name); | |
2044 | if (ret < 0) { | |
2045 | dev_err(dev, "missing \"rx-channel\" parameter\n"); | |
2046 | ret = -ENODEV; | |
2047 | goto quit; | |
2048 | } | |
2049 | ||
2050 | ret = of_property_read_u32(node_interface, "rx-queue", | |
2051 | &netcp->rx_queue_id); | |
2052 | if (ret < 0) { | |
2053 | dev_warn(dev, "missing \"rx-queue\" parameter\n"); | |
2054 | netcp->rx_queue_id = KNAV_QUEUE_QPEND; | |
2055 | } | |
2056 | ||
2057 | ret = of_property_read_u32_array(node_interface, "rx-queue-depth", | |
2058 | netcp->rx_queue_depths, | |
2059 | KNAV_DMA_FDQ_PER_CHAN); | |
2060 | if (ret < 0) { | |
2061 | dev_err(dev, "missing \"rx-queue-depth\" parameter\n"); | |
2062 | netcp->rx_queue_depths[0] = 128; | |
2063 | } | |
2064 | ||
84640e27 KM |
2065 | ret = of_property_read_u32_array(node_interface, "rx-pool", temp, 2); |
2066 | if (ret < 0) { | |
2067 | dev_err(dev, "missing \"rx-pool\" parameter\n"); | |
2068 | ret = -ENODEV; | |
2069 | goto quit; | |
2070 | } | |
2071 | netcp->rx_pool_size = temp[0]; | |
2072 | netcp->rx_pool_region_id = temp[1]; | |
2073 | ||
2074 | ret = of_property_read_u32_array(node_interface, "tx-pool", temp, 2); | |
2075 | if (ret < 0) { | |
2076 | dev_err(dev, "missing \"tx-pool\" parameter\n"); | |
2077 | ret = -ENODEV; | |
2078 | goto quit; | |
2079 | } | |
2080 | netcp->tx_pool_size = temp[0]; | |
2081 | netcp->tx_pool_region_id = temp[1]; | |
2082 | ||
2083 | if (netcp->tx_pool_size < MAX_SKB_FRAGS) { | |
3292004c NC |
2084 | dev_err(dev, "tx-pool size too small, must be at least %u\n", |
2085 | (unsigned int)MAX_SKB_FRAGS); | |
84640e27 KM |
2086 | ret = -ENODEV; |
2087 | goto quit; | |
2088 | } | |
2089 | ||
2090 | ret = of_property_read_u32(node_interface, "tx-completion-queue", | |
2091 | &netcp->tx_compl_qid); | |
2092 | if (ret < 0) { | |
2093 | dev_warn(dev, "missing \"tx-completion-queue\" parameter\n"); | |
2094 | netcp->tx_compl_qid = KNAV_QUEUE_QPEND; | |
2095 | } | |
2096 | ||
2097 | /* NAPI register */ | |
b48b89f9 | 2098 | netif_napi_add(ndev, &netcp->rx_napi, netcp_rx_poll); |
16d083e2 | 2099 | netif_napi_add_tx(ndev, &netcp->tx_napi, netcp_tx_poll); |
84640e27 KM |
2100 | |
2101 | /* Register the network device */ | |
2102 | ndev->dev_id = 0; | |
2103 | ndev->watchdog_timeo = NETCP_TX_TIMEOUT; | |
2104 | ndev->netdev_ops = &netcp_netdev_ops; | |
2105 | SET_NETDEV_DEV(ndev, dev); | |
2106 | ||
2107 | list_add_tail(&netcp->interface_list, &netcp_device->interface_head); | |
2108 | return 0; | |
2109 | ||
2110 | quit: | |
2111 | free_netdev(ndev); | |
2112 | return ret; | |
2113 | } | |
2114 | ||
2115 | static void netcp_delete_interface(struct netcp_device *netcp_device, | |
2116 | struct net_device *ndev) | |
2117 | { | |
2118 | struct netcp_intf_modpriv *intf_modpriv, *tmp; | |
2119 | struct netcp_intf *netcp = netdev_priv(ndev); | |
2120 | struct netcp_module *module; | |
2121 | ||
2122 | dev_dbg(netcp_device->device, "Removing interface \"%s\"\n", | |
2123 | ndev->name); | |
2124 | ||
2125 | /* Notify each of the modules that the interface is going away */ | |
2126 | list_for_each_entry_safe(intf_modpriv, tmp, &netcp->module_head, | |
2127 | intf_list) { | |
2128 | module = intf_modpriv->netcp_module; | |
2129 | dev_dbg(netcp_device->device, "Releasing module \"%s\"\n", | |
2130 | module->name); | |
2131 | if (module->release) | |
2132 | module->release(intf_modpriv->module_priv); | |
2133 | list_del(&intf_modpriv->intf_list); | |
84640e27 KM |
2134 | } |
2135 | WARN(!list_empty(&netcp->module_head), "%s interface module list is not empty!\n", | |
2136 | ndev->name); | |
2137 | ||
2138 | list_del(&netcp->interface_list); | |
2139 | ||
2140 | of_node_put(netcp->node_interface); | |
2141 | unregister_netdev(ndev); | |
84640e27 KM |
2142 | free_netdev(ndev); |
2143 | } | |
2144 | ||
2145 | static int netcp_probe(struct platform_device *pdev) | |
2146 | { | |
2147 | struct device_node *node = pdev->dev.of_node; | |
2148 | struct netcp_intf *netcp_intf, *netcp_tmp; | |
2149 | struct device_node *child, *interfaces; | |
2150 | struct netcp_device *netcp_device; | |
2151 | struct device *dev = &pdev->dev; | |
c52b6782 | 2152 | struct netcp_module *module; |
84640e27 KM |
2153 | int ret; |
2154 | ||
21f706bb MK |
2155 | if (!knav_dma_device_ready() || |
2156 | !knav_qmss_device_ready()) | |
2157 | return -EPROBE_DEFER; | |
2158 | ||
84640e27 KM |
2159 | if (!node) { |
2160 | dev_err(dev, "could not find device info\n"); | |
2161 | return -ENODEV; | |
2162 | } | |
2163 | ||
2164 | /* Allocate a new NETCP device instance */ | |
2165 | netcp_device = devm_kzalloc(dev, sizeof(*netcp_device), GFP_KERNEL); | |
2166 | if (!netcp_device) | |
2167 | return -ENOMEM; | |
2168 | ||
2169 | pm_runtime_enable(&pdev->dev); | |
2170 | ret = pm_runtime_get_sync(&pdev->dev); | |
2171 | if (ret < 0) { | |
2172 | dev_err(dev, "Failed to enable NETCP power-domain\n"); | |
2173 | pm_runtime_disable(&pdev->dev); | |
2174 | return ret; | |
2175 | } | |
2176 | ||
2177 | /* Initialize the NETCP device instance */ | |
2178 | INIT_LIST_HEAD(&netcp_device->interface_head); | |
2179 | INIT_LIST_HEAD(&netcp_device->modpriv_head); | |
2180 | netcp_device->device = dev; | |
2181 | platform_set_drvdata(pdev, netcp_device); | |
2182 | ||
2183 | /* create interfaces */ | |
2184 | interfaces = of_get_child_by_name(node, "netcp-interfaces"); | |
2185 | if (!interfaces) { | |
2186 | dev_err(dev, "could not find netcp-interfaces node\n"); | |
2187 | ret = -ENODEV; | |
2188 | goto probe_quit; | |
2189 | } | |
2190 | ||
2191 | for_each_available_child_of_node(interfaces, child) { | |
2192 | ret = netcp_create_interface(netcp_device, child); | |
2193 | if (ret) { | |
21c328dc RH |
2194 | dev_err(dev, "could not create interface(%pOFn)\n", |
2195 | child); | |
84640e27 KM |
2196 | goto probe_quit_interface; |
2197 | } | |
2198 | } | |
2199 | ||
e2897b82 WY |
2200 | of_node_put(interfaces); |
2201 | ||
84640e27 KM |
2202 | /* Add the device instance to the list */ |
2203 | list_add_tail(&netcp_device->device_list, &netcp_devices); | |
2204 | ||
c52b6782 MK |
2205 | /* Probe & attach any modules already registered */ |
2206 | mutex_lock(&netcp_modules_lock); | |
2207 | for_each_netcp_module(module) { | |
2208 | ret = netcp_module_probe(netcp_device, module); | |
2209 | if (ret < 0) | |
2210 | dev_err(dev, "module(%s) probe failed\n", module->name); | |
2211 | } | |
2212 | mutex_unlock(&netcp_modules_lock); | |
84640e27 KM |
2213 | return 0; |
2214 | ||
2215 | probe_quit_interface: | |
2216 | list_for_each_entry_safe(netcp_intf, netcp_tmp, | |
2217 | &netcp_device->interface_head, | |
2218 | interface_list) { | |
2219 | netcp_delete_interface(netcp_device, netcp_intf->ndev); | |
2220 | } | |
2221 | ||
e2897b82 WY |
2222 | of_node_put(interfaces); |
2223 | ||
84640e27 KM |
2224 | probe_quit: |
2225 | pm_runtime_put_sync(&pdev->dev); | |
2226 | pm_runtime_disable(&pdev->dev); | |
2227 | platform_set_drvdata(pdev, NULL); | |
2228 | return ret; | |
2229 | } | |
2230 | ||
231ea972 | 2231 | static void netcp_remove(struct platform_device *pdev) |
84640e27 KM |
2232 | { |
2233 | struct netcp_device *netcp_device = platform_get_drvdata(pdev); | |
01a03099 | 2234 | struct netcp_intf *netcp_intf, *netcp_tmp; |
84640e27 KM |
2235 | struct netcp_inst_modpriv *inst_modpriv, *tmp; |
2236 | struct netcp_module *module; | |
2237 | ||
2238 | list_for_each_entry_safe(inst_modpriv, tmp, &netcp_device->modpriv_head, | |
2239 | inst_list) { | |
2240 | module = inst_modpriv->netcp_module; | |
2241 | dev_dbg(&pdev->dev, "Removing module \"%s\"\n", module->name); | |
2242 | module->remove(netcp_device, inst_modpriv->module_priv); | |
2243 | list_del(&inst_modpriv->inst_list); | |
84640e27 | 2244 | } |
84640e27 | 2245 | |
01a03099 KM |
2246 | /* now that all modules are removed, clean up the interfaces */ |
2247 | list_for_each_entry_safe(netcp_intf, netcp_tmp, | |
2248 | &netcp_device->interface_head, | |
2249 | interface_list) { | |
2250 | netcp_delete_interface(netcp_device, netcp_intf->ndev); | |
2251 | } | |
2252 | ||
2253 | WARN(!list_empty(&netcp_device->interface_head), | |
2254 | "%s interface list not empty!\n", pdev->name); | |
84640e27 | 2255 | |
84640e27 KM |
2256 | pm_runtime_put_sync(&pdev->dev); |
2257 | pm_runtime_disable(&pdev->dev); | |
2258 | platform_set_drvdata(pdev, NULL); | |
84640e27 KM |
2259 | } |
2260 | ||
1156c965 | 2261 | static const struct of_device_id of_match[] = { |
84640e27 KM |
2262 | { .compatible = "ti,netcp-1.0", }, |
2263 | {}, | |
2264 | }; | |
2265 | MODULE_DEVICE_TABLE(of, of_match); | |
2266 | ||
2267 | static struct platform_driver netcp_driver = { | |
2268 | .driver = { | |
2269 | .name = "netcp-1.0", | |
84640e27 KM |
2270 | .of_match_table = of_match, |
2271 | }, | |
2272 | .probe = netcp_probe, | |
231ea972 | 2273 | .remove_new = netcp_remove, |
84640e27 KM |
2274 | }; |
2275 | module_platform_driver(netcp_driver); | |
2276 | ||
2277 | MODULE_LICENSE("GPL v2"); | |
2278 | MODULE_DESCRIPTION("TI NETCP driver for Keystone SOCs"); | |
2279 | MODULE_AUTHOR("Sandeep Nair <sandeep_n@ti.com"); |