2 * Keystone NetCP Core driver
4 * Copyright (C) 2014 Texas Instruments Incorporated
5 * Authors: Sandeep Nair <sandeep_n@ti.com>
6 * Sandeep Paulraj <s-paulraj@ti.com>
7 * Cyril Chemparathy <cyril@ti.com>
8 * Santosh Shilimkar <santosh.shilimkar@ti.com>
9 * Murali Karicheri <m-karicheri2@ti.com>
10 * Wingman Kwok <w-kwok2@ti.com>
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation version 2.
16 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
17 * kind, whether express or implied; without even the implied warranty
18 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
23 #include <linux/module.h>
24 #include <linux/of_net.h>
25 #include <linux/of_address.h>
26 #include <linux/if_vlan.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/platform_device.h>
29 #include <linux/soc/ti/knav_qmss.h>
30 #include <linux/soc/ti/knav_dma.h>
34 #define NETCP_SOP_OFFSET (NET_IP_ALIGN + NET_SKB_PAD)
35 #define NETCP_NAPI_WEIGHT 64
36 #define NETCP_TX_TIMEOUT (5 * HZ)
37 #define NETCP_PACKET_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN)
38 #define NETCP_MIN_PACKET_SIZE ETH_ZLEN
39 #define NETCP_MAX_MCAST_ADDR 16
41 #define NETCP_EFUSE_REG_INDEX 0
43 #define NETCP_MOD_PROBE_SKIPPED 1
44 #define NETCP_MOD_PROBE_FAILED 2
46 #define NETCP_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \
47 NETIF_MSG_DRV | NETIF_MSG_LINK | \
48 NETIF_MSG_IFUP | NETIF_MSG_INTR | \
49 NETIF_MSG_PROBE | NETIF_MSG_TIMER | \
50 NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \
51 NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \
52 NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \
55 #define NETCP_EFUSE_ADDR_SWAP 2
57 #define knav_queue_get_id(q) knav_queue_device_control(q, \
58 KNAV_QUEUE_GET_ID, (unsigned long)NULL)
60 #define knav_queue_enable_notify(q) knav_queue_device_control(q, \
61 KNAV_QUEUE_ENABLE_NOTIFY, \
64 #define knav_queue_disable_notify(q) knav_queue_device_control(q, \
65 KNAV_QUEUE_DISABLE_NOTIFY, \
68 #define knav_queue_get_count(q) knav_queue_device_control(q, \
69 KNAV_QUEUE_GET_COUNT, (unsigned long)NULL)
71 #define for_each_netcp_module(module) \
72 list_for_each_entry(module, &netcp_modules, module_list)
74 #define for_each_netcp_device_module(netcp_device, inst_modpriv) \
75 list_for_each_entry(inst_modpriv, \
76 &((netcp_device)->modpriv_head), inst_list)
78 #define for_each_module(netcp, intf_modpriv) \
79 list_for_each_entry(intf_modpriv, &netcp->module_head, intf_list)
81 /* Module management structures */
83 struct list_head device_list
;
84 struct list_head interface_head
;
85 struct list_head modpriv_head
;
86 struct device
*device
;
89 struct netcp_inst_modpriv
{
90 struct netcp_device
*netcp_device
;
91 struct netcp_module
*netcp_module
;
92 struct list_head inst_list
;
96 struct netcp_intf_modpriv
{
97 struct netcp_intf
*netcp_priv
;
98 struct netcp_module
*netcp_module
;
99 struct list_head intf_list
;
103 static LIST_HEAD(netcp_devices
);
104 static LIST_HEAD(netcp_modules
);
105 static DEFINE_MUTEX(netcp_modules_lock
);
107 static int netcp_debug_level
= -1;
108 module_param(netcp_debug_level
, int, 0);
109 MODULE_PARM_DESC(netcp_debug_level
, "Netcp debug level (NETIF_MSG bits) (0=none,...,16=all)");
111 /* Helper functions - Get/Set */
112 static void get_pkt_info(u32
*buff
, u32
*buff_len
, u32
*ndesc
,
113 struct knav_dma_desc
*desc
)
115 *buff_len
= desc
->buff_len
;
117 *ndesc
= desc
->next_desc
;
120 static void get_pad_info(u32
*pad0
, u32
*pad1
, struct knav_dma_desc
*desc
)
122 *pad0
= desc
->pad
[0];
123 *pad1
= desc
->pad
[1];
126 static void get_org_pkt_info(u32
*buff
, u32
*buff_len
,
127 struct knav_dma_desc
*desc
)
129 *buff
= desc
->orig_buff
;
130 *buff_len
= desc
->orig_len
;
133 static void get_words(u32
*words
, int num_words
, u32
*desc
)
137 for (i
= 0; i
< num_words
; i
++)
141 static void set_pkt_info(u32 buff
, u32 buff_len
, u32 ndesc
,
142 struct knav_dma_desc
*desc
)
144 desc
->buff_len
= buff_len
;
146 desc
->next_desc
= ndesc
;
149 static void set_desc_info(u32 desc_info
, u32 pkt_info
,
150 struct knav_dma_desc
*desc
)
152 desc
->desc_info
= desc_info
;
153 desc
->packet_info
= pkt_info
;
156 static void set_pad_info(u32 pad0
, u32 pad1
, struct knav_dma_desc
*desc
)
162 static void set_org_pkt_info(u32 buff
, u32 buff_len
,
163 struct knav_dma_desc
*desc
)
165 desc
->orig_buff
= buff
;
166 desc
->orig_len
= buff_len
;
169 static void set_words(u32
*words
, int num_words
, u32
*desc
)
173 for (i
= 0; i
< num_words
; i
++)
177 /* Read the e-fuse value as 32 bit values to be endian independent */
178 static int emac_arch_get_mac_addr(char *x
, void __iomem
*efuse_mac
, u32 swap
)
180 unsigned int addr0
, addr1
;
182 addr1
= readl(efuse_mac
+ 4);
183 addr0
= readl(efuse_mac
);
186 case NETCP_EFUSE_ADDR_SWAP
:
188 addr1
= readl(efuse_mac
);
194 x
[0] = (addr1
& 0x0000ff00) >> 8;
195 x
[1] = addr1
& 0x000000ff;
196 x
[2] = (addr0
& 0xff000000) >> 24;
197 x
[3] = (addr0
& 0x00ff0000) >> 16;
198 x
[4] = (addr0
& 0x0000ff00) >> 8;
199 x
[5] = addr0
& 0x000000ff;
204 static const char *netcp_node_name(struct device_node
*node
)
208 if (of_property_read_string(node
, "label", &name
) < 0)
215 /* Module management routines */
216 static int netcp_register_interface(struct netcp_intf
*netcp
)
220 ret
= register_netdev(netcp
->ndev
);
222 netcp
->netdev_registered
= true;
226 static int netcp_module_probe(struct netcp_device
*netcp_device
,
227 struct netcp_module
*module
)
229 struct device
*dev
= netcp_device
->device
;
230 struct device_node
*devices
, *interface
, *node
= dev
->of_node
;
231 struct device_node
*child
;
232 struct netcp_inst_modpriv
*inst_modpriv
;
233 struct netcp_intf
*netcp_intf
;
234 struct netcp_module
*tmp
;
235 bool primary_module_registered
= false;
238 /* Find this module in the sub-tree for this device */
239 devices
= of_get_child_by_name(node
, "netcp-devices");
241 dev_err(dev
, "could not find netcp-devices node\n");
242 return NETCP_MOD_PROBE_SKIPPED
;
245 for_each_available_child_of_node(devices
, child
) {
246 const char *name
= netcp_node_name(child
);
248 if (!strcasecmp(module
->name
, name
))
252 of_node_put(devices
);
253 /* If module not used for this device, skip it */
255 dev_warn(dev
, "module(%s) not used for device\n", module
->name
);
256 return NETCP_MOD_PROBE_SKIPPED
;
259 inst_modpriv
= devm_kzalloc(dev
, sizeof(*inst_modpriv
), GFP_KERNEL
);
265 inst_modpriv
->netcp_device
= netcp_device
;
266 inst_modpriv
->netcp_module
= module
;
267 list_add_tail(&inst_modpriv
->inst_list
, &netcp_device
->modpriv_head
);
269 ret
= module
->probe(netcp_device
, dev
, child
,
270 &inst_modpriv
->module_priv
);
273 dev_err(dev
, "Probe of module(%s) failed with %d\n",
275 list_del(&inst_modpriv
->inst_list
);
276 devm_kfree(dev
, inst_modpriv
);
277 return NETCP_MOD_PROBE_FAILED
;
280 /* Attach modules only if the primary module is probed */
281 for_each_netcp_module(tmp
) {
283 primary_module_registered
= true;
286 if (!primary_module_registered
)
289 /* Attach module to interfaces */
290 list_for_each_entry(netcp_intf
, &netcp_device
->interface_head
,
292 struct netcp_intf_modpriv
*intf_modpriv
;
294 intf_modpriv
= devm_kzalloc(dev
, sizeof(*intf_modpriv
),
299 interface
= of_parse_phandle(netcp_intf
->node_interface
,
303 devm_kfree(dev
, intf_modpriv
);
307 intf_modpriv
->netcp_priv
= netcp_intf
;
308 intf_modpriv
->netcp_module
= module
;
309 list_add_tail(&intf_modpriv
->intf_list
,
310 &netcp_intf
->module_head
);
312 ret
= module
->attach(inst_modpriv
->module_priv
,
313 netcp_intf
->ndev
, interface
,
314 &intf_modpriv
->module_priv
);
315 of_node_put(interface
);
317 dev_dbg(dev
, "Attach of module %s declined with %d\n",
319 list_del(&intf_modpriv
->intf_list
);
320 devm_kfree(dev
, intf_modpriv
);
325 /* Now register the interface with netdev */
326 list_for_each_entry(netcp_intf
,
327 &netcp_device
->interface_head
,
329 /* If interface not registered then register now */
330 if (!netcp_intf
->netdev_registered
) {
331 ret
= netcp_register_interface(netcp_intf
);
339 int netcp_register_module(struct netcp_module
*module
)
341 struct netcp_device
*netcp_device
;
342 struct netcp_module
*tmp
;
346 WARN(1, "error registering netcp module: no name\n");
350 if (!module
->probe
) {
351 WARN(1, "error registering netcp module: no probe\n");
355 mutex_lock(&netcp_modules_lock
);
357 for_each_netcp_module(tmp
) {
358 if (!strcasecmp(tmp
->name
, module
->name
)) {
359 mutex_unlock(&netcp_modules_lock
);
363 list_add_tail(&module
->module_list
, &netcp_modules
);
365 list_for_each_entry(netcp_device
, &netcp_devices
, device_list
) {
366 ret
= netcp_module_probe(netcp_device
, module
);
370 mutex_unlock(&netcp_modules_lock
);
374 mutex_unlock(&netcp_modules_lock
);
375 netcp_unregister_module(module
);
378 EXPORT_SYMBOL_GPL(netcp_register_module
);
380 static void netcp_release_module(struct netcp_device
*netcp_device
,
381 struct netcp_module
*module
)
383 struct netcp_inst_modpriv
*inst_modpriv
, *inst_tmp
;
384 struct netcp_intf
*netcp_intf
, *netcp_tmp
;
385 struct device
*dev
= netcp_device
->device
;
387 /* Release the module from each interface */
388 list_for_each_entry_safe(netcp_intf
, netcp_tmp
,
389 &netcp_device
->interface_head
,
391 struct netcp_intf_modpriv
*intf_modpriv
, *intf_tmp
;
393 list_for_each_entry_safe(intf_modpriv
, intf_tmp
,
394 &netcp_intf
->module_head
,
396 if (intf_modpriv
->netcp_module
== module
) {
397 module
->release(intf_modpriv
->module_priv
);
398 list_del(&intf_modpriv
->intf_list
);
399 devm_kfree(dev
, intf_modpriv
);
405 /* Remove the module from each instance */
406 list_for_each_entry_safe(inst_modpriv
, inst_tmp
,
407 &netcp_device
->modpriv_head
, inst_list
) {
408 if (inst_modpriv
->netcp_module
== module
) {
409 module
->remove(netcp_device
,
410 inst_modpriv
->module_priv
);
411 list_del(&inst_modpriv
->inst_list
);
412 devm_kfree(dev
, inst_modpriv
);
418 void netcp_unregister_module(struct netcp_module
*module
)
420 struct netcp_device
*netcp_device
;
421 struct netcp_module
*module_tmp
;
423 mutex_lock(&netcp_modules_lock
);
425 list_for_each_entry(netcp_device
, &netcp_devices
, device_list
) {
426 netcp_release_module(netcp_device
, module
);
429 /* Remove the module from the module list */
430 for_each_netcp_module(module_tmp
) {
431 if (module
== module_tmp
) {
432 list_del(&module
->module_list
);
437 mutex_unlock(&netcp_modules_lock
);
439 EXPORT_SYMBOL_GPL(netcp_unregister_module
);
441 void *netcp_module_get_intf_data(struct netcp_module
*module
,
442 struct netcp_intf
*intf
)
444 struct netcp_intf_modpriv
*intf_modpriv
;
446 list_for_each_entry(intf_modpriv
, &intf
->module_head
, intf_list
)
447 if (intf_modpriv
->netcp_module
== module
)
448 return intf_modpriv
->module_priv
;
451 EXPORT_SYMBOL_GPL(netcp_module_get_intf_data
);
453 /* Module TX and RX Hook management */
454 struct netcp_hook_list
{
455 struct list_head list
;
456 netcp_hook_rtn
*hook_rtn
;
461 int netcp_register_txhook(struct netcp_intf
*netcp_priv
, int order
,
462 netcp_hook_rtn
*hook_rtn
, void *hook_data
)
464 struct netcp_hook_list
*entry
;
465 struct netcp_hook_list
*next
;
468 entry
= devm_kzalloc(netcp_priv
->dev
, sizeof(*entry
), GFP_KERNEL
);
472 entry
->hook_rtn
= hook_rtn
;
473 entry
->hook_data
= hook_data
;
474 entry
->order
= order
;
476 spin_lock_irqsave(&netcp_priv
->lock
, flags
);
477 list_for_each_entry(next
, &netcp_priv
->txhook_list_head
, list
) {
478 if (next
->order
> order
)
481 __list_add(&entry
->list
, next
->list
.prev
, &next
->list
);
482 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
486 EXPORT_SYMBOL_GPL(netcp_register_txhook
);
488 int netcp_unregister_txhook(struct netcp_intf
*netcp_priv
, int order
,
489 netcp_hook_rtn
*hook_rtn
, void *hook_data
)
491 struct netcp_hook_list
*next
, *n
;
494 spin_lock_irqsave(&netcp_priv
->lock
, flags
);
495 list_for_each_entry_safe(next
, n
, &netcp_priv
->txhook_list_head
, list
) {
496 if ((next
->order
== order
) &&
497 (next
->hook_rtn
== hook_rtn
) &&
498 (next
->hook_data
== hook_data
)) {
499 list_del(&next
->list
);
500 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
501 devm_kfree(netcp_priv
->dev
, next
);
505 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
508 EXPORT_SYMBOL_GPL(netcp_unregister_txhook
);
510 int netcp_register_rxhook(struct netcp_intf
*netcp_priv
, int order
,
511 netcp_hook_rtn
*hook_rtn
, void *hook_data
)
513 struct netcp_hook_list
*entry
;
514 struct netcp_hook_list
*next
;
517 entry
= devm_kzalloc(netcp_priv
->dev
, sizeof(*entry
), GFP_KERNEL
);
521 entry
->hook_rtn
= hook_rtn
;
522 entry
->hook_data
= hook_data
;
523 entry
->order
= order
;
525 spin_lock_irqsave(&netcp_priv
->lock
, flags
);
526 list_for_each_entry(next
, &netcp_priv
->rxhook_list_head
, list
) {
527 if (next
->order
> order
)
530 __list_add(&entry
->list
, next
->list
.prev
, &next
->list
);
531 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
536 int netcp_unregister_rxhook(struct netcp_intf
*netcp_priv
, int order
,
537 netcp_hook_rtn
*hook_rtn
, void *hook_data
)
539 struct netcp_hook_list
*next
, *n
;
542 spin_lock_irqsave(&netcp_priv
->lock
, flags
);
543 list_for_each_entry_safe(next
, n
, &netcp_priv
->rxhook_list_head
, list
) {
544 if ((next
->order
== order
) &&
545 (next
->hook_rtn
== hook_rtn
) &&
546 (next
->hook_data
== hook_data
)) {
547 list_del(&next
->list
);
548 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
549 devm_kfree(netcp_priv
->dev
, next
);
553 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
558 static void netcp_frag_free(bool is_frag
, void *ptr
)
566 static void netcp_free_rx_desc_chain(struct netcp_intf
*netcp
,
567 struct knav_dma_desc
*desc
)
569 struct knav_dma_desc
*ndesc
;
570 dma_addr_t dma_desc
, dma_buf
;
571 unsigned int buf_len
, dma_sz
= sizeof(*ndesc
);
575 get_words(&dma_desc
, 1, &desc
->next_desc
);
578 ndesc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma_desc
, dma_sz
);
579 if (unlikely(!ndesc
)) {
580 dev_err(netcp
->ndev_dev
, "failed to unmap Rx desc\n");
583 get_pkt_info(&dma_buf
, &tmp
, &dma_desc
, ndesc
);
584 get_pad_info((u32
*)&buf_ptr
, &tmp
, ndesc
);
585 dma_unmap_page(netcp
->dev
, dma_buf
, PAGE_SIZE
, DMA_FROM_DEVICE
);
586 __free_page(buf_ptr
);
587 knav_pool_desc_put(netcp
->rx_pool
, desc
);
590 get_pad_info((u32
*)&buf_ptr
, &buf_len
, desc
);
592 netcp_frag_free(buf_len
<= PAGE_SIZE
, buf_ptr
);
593 knav_pool_desc_put(netcp
->rx_pool
, desc
);
596 static void netcp_empty_rx_queue(struct netcp_intf
*netcp
)
598 struct knav_dma_desc
*desc
;
603 dma
= knav_queue_pop(netcp
->rx_queue
, &dma_sz
);
607 desc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma
, dma_sz
);
608 if (unlikely(!desc
)) {
609 dev_err(netcp
->ndev_dev
, "%s: failed to unmap Rx desc\n",
611 netcp
->ndev
->stats
.rx_errors
++;
614 netcp_free_rx_desc_chain(netcp
, desc
);
615 netcp
->ndev
->stats
.rx_dropped
++;
619 static int netcp_process_one_rx_packet(struct netcp_intf
*netcp
)
621 unsigned int dma_sz
, buf_len
, org_buf_len
;
622 struct knav_dma_desc
*desc
, *ndesc
;
623 unsigned int pkt_sz
= 0, accum_sz
;
624 struct netcp_hook_list
*rx_hook
;
625 dma_addr_t dma_desc
, dma_buff
;
626 struct netcp_packet p_info
;
631 dma_desc
= knav_queue_pop(netcp
->rx_queue
, &dma_sz
);
635 desc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma_desc
, dma_sz
);
636 if (unlikely(!desc
)) {
637 dev_err(netcp
->ndev_dev
, "failed to unmap Rx desc\n");
641 get_pkt_info(&dma_buff
, &buf_len
, &dma_desc
, desc
);
642 get_pad_info((u32
*)&org_buf_ptr
, &org_buf_len
, desc
);
644 if (unlikely(!org_buf_ptr
)) {
645 dev_err(netcp
->ndev_dev
, "NULL bufptr in desc\n");
649 pkt_sz
&= KNAV_DMA_DESC_PKT_LEN_MASK
;
651 dma_unmap_single(netcp
->dev
, dma_buff
, buf_len
, DMA_FROM_DEVICE
);
653 /* Build a new sk_buff for the primary buffer */
654 skb
= build_skb(org_buf_ptr
, org_buf_len
);
655 if (unlikely(!skb
)) {
656 dev_err(netcp
->ndev_dev
, "build_skb() failed\n");
660 /* update data, tail and len */
661 skb_reserve(skb
, NETCP_SOP_OFFSET
);
662 __skb_put(skb
, buf_len
);
664 /* Fill in the page fragment list */
668 ndesc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma_desc
, dma_sz
);
669 if (unlikely(!ndesc
)) {
670 dev_err(netcp
->ndev_dev
, "failed to unmap Rx desc\n");
674 get_pkt_info(&dma_buff
, &buf_len
, &dma_desc
, ndesc
);
675 get_pad_info((u32
*)&page
, &tmp
, ndesc
);
677 if (likely(dma_buff
&& buf_len
&& page
)) {
678 dma_unmap_page(netcp
->dev
, dma_buff
, PAGE_SIZE
,
681 dev_err(netcp
->ndev_dev
, "Bad Rx desc dma_buff(%p), len(%d), page(%p)\n",
682 (void *)dma_buff
, buf_len
, page
);
686 skb_add_rx_frag(skb
, skb_shinfo(skb
)->nr_frags
, page
,
687 offset_in_page(dma_buff
), buf_len
, PAGE_SIZE
);
690 /* Free the descriptor */
691 knav_pool_desc_put(netcp
->rx_pool
, ndesc
);
694 /* Free the primary descriptor */
695 knav_pool_desc_put(netcp
->rx_pool
, desc
);
697 /* check for packet len and warn */
698 if (unlikely(pkt_sz
!= accum_sz
))
699 dev_dbg(netcp
->ndev_dev
, "mismatch in packet size(%d) & sum of fragments(%d)\n",
702 /* Remove ethernet FCS from the packet */
703 __pskb_trim(skb
, skb
->len
- ETH_FCS_LEN
);
705 /* Call each of the RX hooks */
707 p_info
.rxtstamp_complete
= false;
708 list_for_each_entry(rx_hook
, &netcp
->rxhook_list_head
, list
) {
711 ret
= rx_hook
->hook_rtn(rx_hook
->order
, rx_hook
->hook_data
,
714 dev_err(netcp
->ndev_dev
, "RX hook %d failed: %d\n",
715 rx_hook
->order
, ret
);
716 netcp
->ndev
->stats
.rx_errors
++;
722 netcp
->ndev
->stats
.rx_packets
++;
723 netcp
->ndev
->stats
.rx_bytes
+= skb
->len
;
725 /* push skb up the stack */
726 skb
->protocol
= eth_type_trans(skb
, netcp
->ndev
);
727 netif_receive_skb(skb
);
731 netcp_free_rx_desc_chain(netcp
, desc
);
732 netcp
->ndev
->stats
.rx_errors
++;
736 static int netcp_process_rx_packets(struct netcp_intf
*netcp
,
741 for (i
= 0; (i
< budget
) && !netcp_process_one_rx_packet(netcp
); i
++)
746 /* Release descriptors and attached buffers from Rx FDQ */
747 static void netcp_free_rx_buf(struct netcp_intf
*netcp
, int fdq
)
749 struct knav_dma_desc
*desc
;
750 unsigned int buf_len
, dma_sz
;
755 /* Allocate descriptor */
756 while ((dma
= knav_queue_pop(netcp
->rx_fdq
[fdq
], &dma_sz
))) {
757 desc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma
, dma_sz
);
758 if (unlikely(!desc
)) {
759 dev_err(netcp
->ndev_dev
, "failed to unmap Rx desc\n");
763 get_org_pkt_info(&dma
, &buf_len
, desc
);
764 get_pad_info((u32
*)&buf_ptr
, &tmp
, desc
);
766 if (unlikely(!dma
)) {
767 dev_err(netcp
->ndev_dev
, "NULL orig_buff in desc\n");
768 knav_pool_desc_put(netcp
->rx_pool
, desc
);
772 if (unlikely(!buf_ptr
)) {
773 dev_err(netcp
->ndev_dev
, "NULL bufptr in desc\n");
774 knav_pool_desc_put(netcp
->rx_pool
, desc
);
779 dma_unmap_single(netcp
->dev
, dma
, buf_len
,
781 netcp_frag_free((buf_len
<= PAGE_SIZE
), buf_ptr
);
783 dma_unmap_page(netcp
->dev
, dma
, buf_len
,
785 __free_page(buf_ptr
);
788 knav_pool_desc_put(netcp
->rx_pool
, desc
);
792 static void netcp_rxpool_free(struct netcp_intf
*netcp
)
796 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
&&
797 !IS_ERR_OR_NULL(netcp
->rx_fdq
[i
]); i
++)
798 netcp_free_rx_buf(netcp
, i
);
800 if (knav_pool_count(netcp
->rx_pool
) != netcp
->rx_pool_size
)
801 dev_err(netcp
->ndev_dev
, "Lost Rx (%d) descriptors\n",
802 netcp
->rx_pool_size
- knav_pool_count(netcp
->rx_pool
));
804 knav_pool_destroy(netcp
->rx_pool
);
805 netcp
->rx_pool
= NULL
;
808 static int netcp_allocate_rx_buf(struct netcp_intf
*netcp
, int fdq
)
810 struct knav_dma_desc
*hwdesc
;
811 unsigned int buf_len
, dma_sz
;
812 u32 desc_info
, pkt_info
;
818 /* Allocate descriptor */
819 hwdesc
= knav_pool_desc_get(netcp
->rx_pool
);
820 if (IS_ERR_OR_NULL(hwdesc
)) {
821 dev_dbg(netcp
->ndev_dev
, "out of rx pool desc\n");
825 if (likely(fdq
== 0)) {
826 unsigned int primary_buf_len
;
827 /* Allocate a primary receive queue entry */
828 buf_len
= NETCP_PACKET_SIZE
+ NETCP_SOP_OFFSET
;
829 primary_buf_len
= SKB_DATA_ALIGN(buf_len
) +
830 SKB_DATA_ALIGN(sizeof(struct skb_shared_info
));
832 bufptr
= netdev_alloc_frag(primary_buf_len
);
833 pad
[1] = primary_buf_len
;
835 if (unlikely(!bufptr
)) {
836 dev_warn_ratelimited(netcp
->ndev_dev
,
837 "Primary RX buffer alloc failed\n");
840 dma
= dma_map_single(netcp
->dev
, bufptr
, buf_len
,
842 if (unlikely(dma_mapping_error(netcp
->dev
, dma
)))
845 pad
[0] = (u32
)bufptr
;
848 /* Allocate a secondary receive queue entry */
849 page
= alloc_page(GFP_ATOMIC
| GFP_DMA
| __GFP_COLD
);
850 if (unlikely(!page
)) {
851 dev_warn_ratelimited(netcp
->ndev_dev
, "Secondary page alloc failed\n");
855 dma
= dma_map_page(netcp
->dev
, page
, 0, buf_len
, DMA_TO_DEVICE
);
860 desc_info
= KNAV_DMA_DESC_PS_INFO_IN_DESC
;
861 desc_info
|= buf_len
& KNAV_DMA_DESC_PKT_LEN_MASK
;
862 pkt_info
= KNAV_DMA_DESC_HAS_EPIB
;
863 pkt_info
|= KNAV_DMA_NUM_PS_WORDS
<< KNAV_DMA_DESC_PSLEN_SHIFT
;
864 pkt_info
|= (netcp
->rx_queue_id
& KNAV_DMA_DESC_RETQ_MASK
) <<
865 KNAV_DMA_DESC_RETQ_SHIFT
;
866 set_org_pkt_info(dma
, buf_len
, hwdesc
);
867 set_pad_info(pad
[0], pad
[1], hwdesc
);
868 set_desc_info(desc_info
, pkt_info
, hwdesc
);
871 knav_pool_desc_map(netcp
->rx_pool
, hwdesc
, sizeof(*hwdesc
), &dma
,
873 knav_queue_push(netcp
->rx_fdq
[fdq
], dma
, sizeof(*hwdesc
), 0);
877 knav_pool_desc_put(netcp
->rx_pool
, hwdesc
);
881 /* Refill Rx FDQ with descriptors & attached buffers */
882 static void netcp_rxpool_refill(struct netcp_intf
*netcp
)
884 u32 fdq_deficit
[KNAV_DMA_FDQ_PER_CHAN
] = {0};
887 /* Calculate the FDQ deficit and refill */
888 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
&& netcp
->rx_fdq
[i
]; i
++) {
889 fdq_deficit
[i
] = netcp
->rx_queue_depths
[i
] -
890 knav_queue_get_count(netcp
->rx_fdq
[i
]);
892 while (fdq_deficit
[i
]-- && !ret
)
893 ret
= netcp_allocate_rx_buf(netcp
, i
);
898 static int netcp_rx_poll(struct napi_struct
*napi
, int budget
)
900 struct netcp_intf
*netcp
= container_of(napi
, struct netcp_intf
,
902 unsigned int packets
;
904 packets
= netcp_process_rx_packets(netcp
, budget
);
906 netcp_rxpool_refill(netcp
);
907 if (packets
< budget
) {
908 napi_complete(&netcp
->rx_napi
);
909 knav_queue_enable_notify(netcp
->rx_queue
);
915 static void netcp_rx_notify(void *arg
)
917 struct netcp_intf
*netcp
= arg
;
919 knav_queue_disable_notify(netcp
->rx_queue
);
920 napi_schedule(&netcp
->rx_napi
);
923 static void netcp_free_tx_desc_chain(struct netcp_intf
*netcp
,
924 struct knav_dma_desc
*desc
,
925 unsigned int desc_sz
)
927 struct knav_dma_desc
*ndesc
= desc
;
928 dma_addr_t dma_desc
, dma_buf
;
929 unsigned int buf_len
;
932 get_pkt_info(&dma_buf
, &buf_len
, &dma_desc
, ndesc
);
934 if (dma_buf
&& buf_len
)
935 dma_unmap_single(netcp
->dev
, dma_buf
, buf_len
,
938 dev_warn(netcp
->ndev_dev
, "bad Tx desc buf(%p), len(%d)\n",
939 (void *)dma_buf
, buf_len
);
941 knav_pool_desc_put(netcp
->tx_pool
, ndesc
);
944 ndesc
= knav_pool_desc_unmap(netcp
->tx_pool
, dma_desc
,
947 dev_err(netcp
->ndev_dev
, "failed to unmap Tx desc\n");
952 static int netcp_process_tx_compl_packets(struct netcp_intf
*netcp
,
955 struct knav_dma_desc
*desc
;
963 dma
= knav_queue_pop(netcp
->tx_compl_q
, &dma_sz
);
966 desc
= knav_pool_desc_unmap(netcp
->tx_pool
, dma
, dma_sz
);
967 if (unlikely(!desc
)) {
968 dev_err(netcp
->ndev_dev
, "failed to unmap Tx desc\n");
969 netcp
->ndev
->stats
.tx_errors
++;
973 get_pad_info((u32
*)&skb
, &tmp
, desc
);
974 netcp_free_tx_desc_chain(netcp
, desc
, dma_sz
);
976 dev_err(netcp
->ndev_dev
, "No skb in Tx desc\n");
977 netcp
->ndev
->stats
.tx_errors
++;
981 if (netif_subqueue_stopped(netcp
->ndev
, skb
) &&
982 netif_running(netcp
->ndev
) &&
983 (knav_pool_count(netcp
->tx_pool
) >
984 netcp
->tx_resume_threshold
)) {
985 u16 subqueue
= skb_get_queue_mapping(skb
);
987 netif_wake_subqueue(netcp
->ndev
, subqueue
);
990 netcp
->ndev
->stats
.tx_packets
++;
991 netcp
->ndev
->stats
.tx_bytes
+= skb
->len
;
998 static int netcp_tx_poll(struct napi_struct
*napi
, int budget
)
1001 struct netcp_intf
*netcp
= container_of(napi
, struct netcp_intf
,
1004 packets
= netcp_process_tx_compl_packets(netcp
, budget
);
1005 if (packets
< budget
) {
1006 napi_complete(&netcp
->tx_napi
);
1007 knav_queue_enable_notify(netcp
->tx_compl_q
);
1013 static void netcp_tx_notify(void *arg
)
1015 struct netcp_intf
*netcp
= arg
;
1017 knav_queue_disable_notify(netcp
->tx_compl_q
);
1018 napi_schedule(&netcp
->tx_napi
);
1021 static struct knav_dma_desc
*
1022 netcp_tx_map_skb(struct sk_buff
*skb
, struct netcp_intf
*netcp
)
1024 struct knav_dma_desc
*desc
, *ndesc
, *pdesc
;
1025 unsigned int pkt_len
= skb_headlen(skb
);
1026 struct device
*dev
= netcp
->dev
;
1027 dma_addr_t dma_addr
;
1028 unsigned int dma_sz
;
1031 /* Map the linear buffer */
1032 dma_addr
= dma_map_single(dev
, skb
->data
, pkt_len
, DMA_TO_DEVICE
);
1033 if (unlikely(dma_mapping_error(dev
, dma_addr
))) {
1034 dev_err(netcp
->ndev_dev
, "Failed to map skb buffer\n");
1038 desc
= knav_pool_desc_get(netcp
->tx_pool
);
1039 if (unlikely(IS_ERR_OR_NULL(desc
))) {
1040 dev_err(netcp
->ndev_dev
, "out of TX desc\n");
1041 dma_unmap_single(dev
, dma_addr
, pkt_len
, DMA_TO_DEVICE
);
1045 set_pkt_info(dma_addr
, pkt_len
, 0, desc
);
1046 if (skb_is_nonlinear(skb
)) {
1047 prefetchw(skb_shinfo(skb
));
1049 desc
->next_desc
= 0;
1055 /* Handle the case where skb is fragmented in pages */
1056 for (i
= 0; i
< skb_shinfo(skb
)->nr_frags
; i
++) {
1057 skb_frag_t
*frag
= &skb_shinfo(skb
)->frags
[i
];
1058 struct page
*page
= skb_frag_page(frag
);
1059 u32 page_offset
= frag
->page_offset
;
1060 u32 buf_len
= skb_frag_size(frag
);
1061 dma_addr_t desc_dma
;
1064 dma_addr
= dma_map_page(dev
, page
, page_offset
, buf_len
,
1066 if (unlikely(!dma_addr
)) {
1067 dev_err(netcp
->ndev_dev
, "Failed to map skb page\n");
1071 ndesc
= knav_pool_desc_get(netcp
->tx_pool
);
1072 if (unlikely(IS_ERR_OR_NULL(ndesc
))) {
1073 dev_err(netcp
->ndev_dev
, "out of TX desc for frags\n");
1074 dma_unmap_page(dev
, dma_addr
, buf_len
, DMA_TO_DEVICE
);
1078 desc_dma
= knav_pool_desc_virt_to_dma(netcp
->tx_pool
,
1081 (netcp
->tx_compl_qid
& KNAV_DMA_DESC_RETQ_MASK
) <<
1082 KNAV_DMA_DESC_RETQ_SHIFT
;
1083 set_pkt_info(dma_addr
, buf_len
, 0, ndesc
);
1084 set_words(&desc_dma
, 1, &pdesc
->next_desc
);
1087 knav_pool_desc_map(netcp
->tx_pool
, pdesc
,
1088 sizeof(*pdesc
), &desc_dma
, &dma_sz
);
1092 knav_pool_desc_map(netcp
->tx_pool
, pdesc
, sizeof(*pdesc
),
1093 &dma_addr
, &dma_sz
);
1095 /* frag list based linkage is not supported for now. */
1096 if (skb_shinfo(skb
)->frag_list
) {
1097 dev_err_ratelimited(netcp
->ndev_dev
, "NETIF_F_FRAGLIST not supported\n");
1102 WARN_ON(pkt_len
!= skb
->len
);
1104 pkt_len
&= KNAV_DMA_DESC_PKT_LEN_MASK
;
1105 set_words(&pkt_len
, 1, &desc
->desc_info
);
1109 netcp_free_tx_desc_chain(netcp
, desc
, sizeof(*desc
));
1113 static int netcp_tx_submit_skb(struct netcp_intf
*netcp
,
1114 struct sk_buff
*skb
,
1115 struct knav_dma_desc
*desc
)
1117 struct netcp_tx_pipe
*tx_pipe
= NULL
;
1118 struct netcp_hook_list
*tx_hook
;
1119 struct netcp_packet p_info
;
1120 unsigned int dma_sz
;
1125 p_info
.netcp
= netcp
;
1127 p_info
.tx_pipe
= NULL
;
1128 p_info
.psdata_len
= 0;
1129 p_info
.ts_context
= NULL
;
1130 p_info
.txtstamp_complete
= NULL
;
1131 p_info
.epib
= desc
->epib
;
1132 p_info
.psdata
= desc
->psdata
;
1133 memset(p_info
.epib
, 0, KNAV_DMA_NUM_EPIB_WORDS
* sizeof(u32
));
1135 /* Find out where to inject the packet for transmission */
1136 list_for_each_entry(tx_hook
, &netcp
->txhook_list_head
, list
) {
1137 ret
= tx_hook
->hook_rtn(tx_hook
->order
, tx_hook
->hook_data
,
1139 if (unlikely(ret
!= 0)) {
1140 dev_err(netcp
->ndev_dev
, "TX hook %d rejected the packet with reason(%d)\n",
1141 tx_hook
->order
, ret
);
1142 ret
= (ret
< 0) ? ret
: NETDEV_TX_OK
;
1147 /* Make sure some TX hook claimed the packet */
1148 tx_pipe
= p_info
.tx_pipe
;
1150 dev_err(netcp
->ndev_dev
, "No TX hook claimed the packet!\n");
1155 /* update descriptor */
1156 if (p_info
.psdata_len
) {
1157 u32
*psdata
= p_info
.psdata
;
1159 memmove(p_info
.psdata
, p_info
.psdata
+ p_info
.psdata_len
,
1161 set_words(psdata
, p_info
.psdata_len
, psdata
);
1162 tmp
|= (p_info
.psdata_len
& KNAV_DMA_DESC_PSLEN_MASK
) <<
1163 KNAV_DMA_DESC_PSLEN_SHIFT
;
1166 tmp
|= KNAV_DMA_DESC_HAS_EPIB
|
1167 ((netcp
->tx_compl_qid
& KNAV_DMA_DESC_RETQ_MASK
) <<
1168 KNAV_DMA_DESC_RETQ_SHIFT
);
1170 if (!(tx_pipe
->flags
& SWITCH_TO_PORT_IN_TAGINFO
)) {
1171 tmp
|= ((tx_pipe
->switch_to_port
& KNAV_DMA_DESC_PSFLAG_MASK
) <<
1172 KNAV_DMA_DESC_PSFLAG_SHIFT
);
1175 set_words(&tmp
, 1, &desc
->packet_info
);
1176 set_words((u32
*)&skb
, 1, &desc
->pad
[0]);
1178 if (tx_pipe
->flags
& SWITCH_TO_PORT_IN_TAGINFO
) {
1179 tmp
= tx_pipe
->switch_to_port
;
1180 set_words((u32
*)&tmp
, 1, &desc
->tag_info
);
1183 /* submit packet descriptor */
1184 ret
= knav_pool_desc_map(netcp
->tx_pool
, desc
, sizeof(*desc
), &dma
,
1186 if (unlikely(ret
)) {
1187 dev_err(netcp
->ndev_dev
, "%s() failed to map desc\n", __func__
);
1191 skb_tx_timestamp(skb
);
1192 knav_queue_push(tx_pipe
->dma_queue
, dma
, dma_sz
, 0);
1198 /* Submit the packet */
1199 static int netcp_ndo_start_xmit(struct sk_buff
*skb
, struct net_device
*ndev
)
1201 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1202 int subqueue
= skb_get_queue_mapping(skb
);
1203 struct knav_dma_desc
*desc
;
1204 int desc_count
, ret
= 0;
1206 if (unlikely(skb
->len
<= 0)) {
1208 return NETDEV_TX_OK
;
1211 if (unlikely(skb
->len
< NETCP_MIN_PACKET_SIZE
)) {
1212 ret
= skb_padto(skb
, NETCP_MIN_PACKET_SIZE
);
1214 /* If we get here, the skb has already been dropped */
1215 dev_warn(netcp
->ndev_dev
, "padding failed (%d), packet dropped\n",
1217 ndev
->stats
.tx_dropped
++;
1220 skb
->len
= NETCP_MIN_PACKET_SIZE
;
1223 desc
= netcp_tx_map_skb(skb
, netcp
);
1224 if (unlikely(!desc
)) {
1225 netif_stop_subqueue(ndev
, subqueue
);
1230 ret
= netcp_tx_submit_skb(netcp
, skb
, desc
);
1234 ndev
->trans_start
= jiffies
;
1236 /* Check Tx pool count & stop subqueue if needed */
1237 desc_count
= knav_pool_count(netcp
->tx_pool
);
1238 if (desc_count
< netcp
->tx_pause_threshold
) {
1239 dev_dbg(netcp
->ndev_dev
, "pausing tx, count(%d)\n", desc_count
);
1240 netif_stop_subqueue(ndev
, subqueue
);
1242 return NETDEV_TX_OK
;
1245 ndev
->stats
.tx_dropped
++;
1247 netcp_free_tx_desc_chain(netcp
, desc
, sizeof(*desc
));
1252 int netcp_txpipe_close(struct netcp_tx_pipe
*tx_pipe
)
1254 if (tx_pipe
->dma_channel
) {
1255 knav_dma_close_channel(tx_pipe
->dma_channel
);
1256 tx_pipe
->dma_channel
= NULL
;
1260 EXPORT_SYMBOL_GPL(netcp_txpipe_close
);
1262 int netcp_txpipe_open(struct netcp_tx_pipe
*tx_pipe
)
1264 struct device
*dev
= tx_pipe
->netcp_device
->device
;
1265 struct knav_dma_cfg config
;
1269 memset(&config
, 0, sizeof(config
));
1270 config
.direction
= DMA_MEM_TO_DEV
;
1271 config
.u
.tx
.filt_einfo
= false;
1272 config
.u
.tx
.filt_pswords
= false;
1273 config
.u
.tx
.priority
= DMA_PRIO_MED_L
;
1275 tx_pipe
->dma_channel
= knav_dma_open_channel(dev
,
1276 tx_pipe
->dma_chan_name
, &config
);
1277 if (IS_ERR_OR_NULL(tx_pipe
->dma_channel
)) {
1278 dev_err(dev
, "failed opening tx chan(%s)\n",
1279 tx_pipe
->dma_chan_name
);
1283 snprintf(name
, sizeof(name
), "tx-pipe-%s", dev_name(dev
));
1284 tx_pipe
->dma_queue
= knav_queue_open(name
, tx_pipe
->dma_queue_id
,
1286 if (IS_ERR(tx_pipe
->dma_queue
)) {
1287 dev_err(dev
, "Could not open DMA queue for channel \"%s\": %d\n",
1289 ret
= PTR_ERR(tx_pipe
->dma_queue
);
1293 dev_dbg(dev
, "opened tx pipe %s\n", name
);
1297 if (!IS_ERR_OR_NULL(tx_pipe
->dma_channel
))
1298 knav_dma_close_channel(tx_pipe
->dma_channel
);
1299 tx_pipe
->dma_channel
= NULL
;
1302 EXPORT_SYMBOL_GPL(netcp_txpipe_open
);
1304 int netcp_txpipe_init(struct netcp_tx_pipe
*tx_pipe
,
1305 struct netcp_device
*netcp_device
,
1306 const char *dma_chan_name
, unsigned int dma_queue_id
)
1308 memset(tx_pipe
, 0, sizeof(*tx_pipe
));
1309 tx_pipe
->netcp_device
= netcp_device
;
1310 tx_pipe
->dma_chan_name
= dma_chan_name
;
1311 tx_pipe
->dma_queue_id
= dma_queue_id
;
1314 EXPORT_SYMBOL_GPL(netcp_txpipe_init
);
1316 static struct netcp_addr
*netcp_addr_find(struct netcp_intf
*netcp
,
1318 enum netcp_addr_type type
)
1320 struct netcp_addr
*naddr
;
1322 list_for_each_entry(naddr
, &netcp
->addr_list
, node
) {
1323 if (naddr
->type
!= type
)
1325 if (addr
&& memcmp(addr
, naddr
->addr
, ETH_ALEN
))
1333 static struct netcp_addr
*netcp_addr_add(struct netcp_intf
*netcp
,
1335 enum netcp_addr_type type
)
1337 struct netcp_addr
*naddr
;
1339 naddr
= devm_kmalloc(netcp
->dev
, sizeof(*naddr
), GFP_ATOMIC
);
1345 naddr
->netcp
= netcp
;
1347 ether_addr_copy(naddr
->addr
, addr
);
1349 eth_zero_addr(naddr
->addr
);
1350 list_add_tail(&naddr
->node
, &netcp
->addr_list
);
1355 static void netcp_addr_del(struct netcp_intf
*netcp
, struct netcp_addr
*naddr
)
1357 list_del(&naddr
->node
);
1358 devm_kfree(netcp
->dev
, naddr
);
1361 static void netcp_addr_clear_mark(struct netcp_intf
*netcp
)
1363 struct netcp_addr
*naddr
;
1365 list_for_each_entry(naddr
, &netcp
->addr_list
, node
)
1369 static void netcp_addr_add_mark(struct netcp_intf
*netcp
, const u8
*addr
,
1370 enum netcp_addr_type type
)
1372 struct netcp_addr
*naddr
;
1374 naddr
= netcp_addr_find(netcp
, addr
, type
);
1376 naddr
->flags
|= ADDR_VALID
;
1380 naddr
= netcp_addr_add(netcp
, addr
, type
);
1381 if (!WARN_ON(!naddr
))
1382 naddr
->flags
|= ADDR_NEW
;
1385 static void netcp_addr_sweep_del(struct netcp_intf
*netcp
)
1387 struct netcp_addr
*naddr
, *tmp
;
1388 struct netcp_intf_modpriv
*priv
;
1389 struct netcp_module
*module
;
1392 list_for_each_entry_safe(naddr
, tmp
, &netcp
->addr_list
, node
) {
1393 if (naddr
->flags
& (ADDR_VALID
| ADDR_NEW
))
1395 dev_dbg(netcp
->ndev_dev
, "deleting address %pM, type %x\n",
1396 naddr
->addr
, naddr
->type
);
1397 for_each_module(netcp
, priv
) {
1398 module
= priv
->netcp_module
;
1399 if (!module
->del_addr
)
1401 error
= module
->del_addr(priv
->module_priv
,
1405 netcp_addr_del(netcp
, naddr
);
1409 static void netcp_addr_sweep_add(struct netcp_intf
*netcp
)
1411 struct netcp_addr
*naddr
, *tmp
;
1412 struct netcp_intf_modpriv
*priv
;
1413 struct netcp_module
*module
;
1416 list_for_each_entry_safe(naddr
, tmp
, &netcp
->addr_list
, node
) {
1417 if (!(naddr
->flags
& ADDR_NEW
))
1419 dev_dbg(netcp
->ndev_dev
, "adding address %pM, type %x\n",
1420 naddr
->addr
, naddr
->type
);
1422 for_each_module(netcp
, priv
) {
1423 module
= priv
->netcp_module
;
1424 if (!module
->add_addr
)
1426 error
= module
->add_addr(priv
->module_priv
, naddr
);
1432 static void netcp_set_rx_mode(struct net_device
*ndev
)
1434 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1435 struct netdev_hw_addr
*ndev_addr
;
1438 promisc
= (ndev
->flags
& IFF_PROMISC
||
1439 ndev
->flags
& IFF_ALLMULTI
||
1440 netdev_mc_count(ndev
) > NETCP_MAX_MCAST_ADDR
);
1442 spin_lock(&netcp
->lock
);
1443 /* first clear all marks */
1444 netcp_addr_clear_mark(netcp
);
1446 /* next add new entries, mark existing ones */
1447 netcp_addr_add_mark(netcp
, ndev
->broadcast
, ADDR_BCAST
);
1448 for_each_dev_addr(ndev
, ndev_addr
)
1449 netcp_addr_add_mark(netcp
, ndev_addr
->addr
, ADDR_DEV
);
1450 netdev_for_each_uc_addr(ndev_addr
, ndev
)
1451 netcp_addr_add_mark(netcp
, ndev_addr
->addr
, ADDR_UCAST
);
1452 netdev_for_each_mc_addr(ndev_addr
, ndev
)
1453 netcp_addr_add_mark(netcp
, ndev_addr
->addr
, ADDR_MCAST
);
1456 netcp_addr_add_mark(netcp
, NULL
, ADDR_ANY
);
1458 /* finally sweep and callout into modules */
1459 netcp_addr_sweep_del(netcp
);
1460 netcp_addr_sweep_add(netcp
);
1461 spin_unlock(&netcp
->lock
);
1464 static void netcp_free_navigator_resources(struct netcp_intf
*netcp
)
1468 if (netcp
->rx_channel
) {
1469 knav_dma_close_channel(netcp
->rx_channel
);
1470 netcp
->rx_channel
= NULL
;
1473 if (!IS_ERR_OR_NULL(netcp
->rx_pool
))
1474 netcp_rxpool_free(netcp
);
1476 if (!IS_ERR_OR_NULL(netcp
->rx_queue
)) {
1477 knav_queue_close(netcp
->rx_queue
);
1478 netcp
->rx_queue
= NULL
;
1481 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
&&
1482 !IS_ERR_OR_NULL(netcp
->rx_fdq
[i
]) ; ++i
) {
1483 knav_queue_close(netcp
->rx_fdq
[i
]);
1484 netcp
->rx_fdq
[i
] = NULL
;
1487 if (!IS_ERR_OR_NULL(netcp
->tx_compl_q
)) {
1488 knav_queue_close(netcp
->tx_compl_q
);
1489 netcp
->tx_compl_q
= NULL
;
1492 if (!IS_ERR_OR_NULL(netcp
->tx_pool
)) {
1493 knav_pool_destroy(netcp
->tx_pool
);
1494 netcp
->tx_pool
= NULL
;
1498 static int netcp_setup_navigator_resources(struct net_device
*ndev
)
1500 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1501 struct knav_queue_notify_config notify_cfg
;
1502 struct knav_dma_cfg config
;
1508 /* Create Rx/Tx descriptor pools */
1509 snprintf(name
, sizeof(name
), "rx-pool-%s", ndev
->name
);
1510 netcp
->rx_pool
= knav_pool_create(name
, netcp
->rx_pool_size
,
1511 netcp
->rx_pool_region_id
);
1512 if (IS_ERR_OR_NULL(netcp
->rx_pool
)) {
1513 dev_err(netcp
->ndev_dev
, "Couldn't create rx pool\n");
1514 ret
= PTR_ERR(netcp
->rx_pool
);
1518 snprintf(name
, sizeof(name
), "tx-pool-%s", ndev
->name
);
1519 netcp
->tx_pool
= knav_pool_create(name
, netcp
->tx_pool_size
,
1520 netcp
->tx_pool_region_id
);
1521 if (IS_ERR_OR_NULL(netcp
->tx_pool
)) {
1522 dev_err(netcp
->ndev_dev
, "Couldn't create tx pool\n");
1523 ret
= PTR_ERR(netcp
->tx_pool
);
1527 /* open Tx completion queue */
1528 snprintf(name
, sizeof(name
), "tx-compl-%s", ndev
->name
);
1529 netcp
->tx_compl_q
= knav_queue_open(name
, netcp
->tx_compl_qid
, 0);
1530 if (IS_ERR_OR_NULL(netcp
->tx_compl_q
)) {
1531 ret
= PTR_ERR(netcp
->tx_compl_q
);
1534 netcp
->tx_compl_qid
= knav_queue_get_id(netcp
->tx_compl_q
);
1536 /* Set notification for Tx completion */
1537 notify_cfg
.fn
= netcp_tx_notify
;
1538 notify_cfg
.fn_arg
= netcp
;
1539 ret
= knav_queue_device_control(netcp
->tx_compl_q
,
1540 KNAV_QUEUE_SET_NOTIFIER
,
1541 (unsigned long)¬ify_cfg
);
1545 knav_queue_disable_notify(netcp
->tx_compl_q
);
1547 /* open Rx completion queue */
1548 snprintf(name
, sizeof(name
), "rx-compl-%s", ndev
->name
);
1549 netcp
->rx_queue
= knav_queue_open(name
, netcp
->rx_queue_id
, 0);
1550 if (IS_ERR_OR_NULL(netcp
->rx_queue
)) {
1551 ret
= PTR_ERR(netcp
->rx_queue
);
1554 netcp
->rx_queue_id
= knav_queue_get_id(netcp
->rx_queue
);
1556 /* Set notification for Rx completion */
1557 notify_cfg
.fn
= netcp_rx_notify
;
1558 notify_cfg
.fn_arg
= netcp
;
1559 ret
= knav_queue_device_control(netcp
->rx_queue
,
1560 KNAV_QUEUE_SET_NOTIFIER
,
1561 (unsigned long)¬ify_cfg
);
1565 knav_queue_disable_notify(netcp
->rx_queue
);
1568 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
&& netcp
->rx_queue_depths
[i
];
1570 snprintf(name
, sizeof(name
), "rx-fdq-%s-%d", ndev
->name
, i
);
1571 netcp
->rx_fdq
[i
] = knav_queue_open(name
, KNAV_QUEUE_GP
, 0);
1572 if (IS_ERR_OR_NULL(netcp
->rx_fdq
[i
])) {
1573 ret
= PTR_ERR(netcp
->rx_fdq
[i
]);
1578 memset(&config
, 0, sizeof(config
));
1579 config
.direction
= DMA_DEV_TO_MEM
;
1580 config
.u
.rx
.einfo_present
= true;
1581 config
.u
.rx
.psinfo_present
= true;
1582 config
.u
.rx
.err_mode
= DMA_DROP
;
1583 config
.u
.rx
.desc_type
= DMA_DESC_HOST
;
1584 config
.u
.rx
.psinfo_at_sop
= false;
1585 config
.u
.rx
.sop_offset
= NETCP_SOP_OFFSET
;
1586 config
.u
.rx
.dst_q
= netcp
->rx_queue_id
;
1587 config
.u
.rx
.thresh
= DMA_THRESH_NONE
;
1589 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
; ++i
) {
1590 if (netcp
->rx_fdq
[i
])
1591 last_fdq
= knav_queue_get_id(netcp
->rx_fdq
[i
]);
1592 config
.u
.rx
.fdq
[i
] = last_fdq
;
1595 netcp
->rx_channel
= knav_dma_open_channel(netcp
->netcp_device
->device
,
1596 netcp
->dma_chan_name
, &config
);
1597 if (IS_ERR_OR_NULL(netcp
->rx_channel
)) {
1598 dev_err(netcp
->ndev_dev
, "failed opening rx chan(%s\n",
1599 netcp
->dma_chan_name
);
1603 dev_dbg(netcp
->ndev_dev
, "opened RX channel: %p\n", netcp
->rx_channel
);
1607 netcp_free_navigator_resources(netcp
);
1611 /* Open the device */
1612 static int netcp_ndo_open(struct net_device
*ndev
)
1614 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1615 struct netcp_intf_modpriv
*intf_modpriv
;
1616 struct netcp_module
*module
;
1619 netif_carrier_off(ndev
);
1620 ret
= netcp_setup_navigator_resources(ndev
);
1622 dev_err(netcp
->ndev_dev
, "Failed to setup navigator resources\n");
1626 for_each_module(netcp
, intf_modpriv
) {
1627 module
= intf_modpriv
->netcp_module
;
1629 ret
= module
->open(intf_modpriv
->module_priv
, ndev
);
1631 dev_err(netcp
->ndev_dev
, "module open failed\n");
1637 napi_enable(&netcp
->rx_napi
);
1638 napi_enable(&netcp
->tx_napi
);
1639 knav_queue_enable_notify(netcp
->tx_compl_q
);
1640 knav_queue_enable_notify(netcp
->rx_queue
);
1641 netcp_rxpool_refill(netcp
);
1642 netif_tx_wake_all_queues(ndev
);
1643 dev_dbg(netcp
->ndev_dev
, "netcp device %s opened\n", ndev
->name
);
1647 for_each_module(netcp
, intf_modpriv
) {
1648 module
= intf_modpriv
->netcp_module
;
1650 module
->close(intf_modpriv
->module_priv
, ndev
);
1654 netcp_free_navigator_resources(netcp
);
1658 /* Close the device */
1659 static int netcp_ndo_stop(struct net_device
*ndev
)
1661 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1662 struct netcp_intf_modpriv
*intf_modpriv
;
1663 struct netcp_module
*module
;
1666 netif_tx_stop_all_queues(ndev
);
1667 netif_carrier_off(ndev
);
1668 netcp_addr_clear_mark(netcp
);
1669 netcp_addr_sweep_del(netcp
);
1670 knav_queue_disable_notify(netcp
->rx_queue
);
1671 knav_queue_disable_notify(netcp
->tx_compl_q
);
1672 napi_disable(&netcp
->rx_napi
);
1673 napi_disable(&netcp
->tx_napi
);
1675 for_each_module(netcp
, intf_modpriv
) {
1676 module
= intf_modpriv
->netcp_module
;
1677 if (module
->close
) {
1678 err
= module
->close(intf_modpriv
->module_priv
, ndev
);
1680 dev_err(netcp
->ndev_dev
, "Close failed\n");
1684 /* Recycle Rx descriptors from completion queue */
1685 netcp_empty_rx_queue(netcp
);
1687 /* Recycle Tx descriptors from completion queue */
1688 netcp_process_tx_compl_packets(netcp
, netcp
->tx_pool_size
);
1690 if (knav_pool_count(netcp
->tx_pool
) != netcp
->tx_pool_size
)
1691 dev_err(netcp
->ndev_dev
, "Lost (%d) Tx descs\n",
1692 netcp
->tx_pool_size
- knav_pool_count(netcp
->tx_pool
));
1694 netcp_free_navigator_resources(netcp
);
1695 dev_dbg(netcp
->ndev_dev
, "netcp device %s stopped\n", ndev
->name
);
1699 static int netcp_ndo_ioctl(struct net_device
*ndev
,
1700 struct ifreq
*req
, int cmd
)
1702 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1703 struct netcp_intf_modpriv
*intf_modpriv
;
1704 struct netcp_module
*module
;
1705 int ret
= -1, err
= -EOPNOTSUPP
;
1707 if (!netif_running(ndev
))
1710 for_each_module(netcp
, intf_modpriv
) {
1711 module
= intf_modpriv
->netcp_module
;
1715 err
= module
->ioctl(intf_modpriv
->module_priv
, req
, cmd
);
1716 if ((err
< 0) && (err
!= -EOPNOTSUPP
)) {
1725 return (ret
== 0) ? 0 : err
;
1728 static int netcp_ndo_change_mtu(struct net_device
*ndev
, int new_mtu
)
1730 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1732 /* MTU < 68 is an error for IPv4 traffic */
1733 if ((new_mtu
< 68) ||
1734 (new_mtu
> (NETCP_MAX_FRAME_SIZE
- ETH_HLEN
- ETH_FCS_LEN
))) {
1735 dev_err(netcp
->ndev_dev
, "Invalid mtu size = %d\n", new_mtu
);
1739 ndev
->mtu
= new_mtu
;
1743 static void netcp_ndo_tx_timeout(struct net_device
*ndev
)
1745 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1746 unsigned int descs
= knav_pool_count(netcp
->tx_pool
);
1748 dev_err(netcp
->ndev_dev
, "transmit timed out tx descs(%d)\n", descs
);
1749 netcp_process_tx_compl_packets(netcp
, netcp
->tx_pool_size
);
1750 ndev
->trans_start
= jiffies
;
1751 netif_tx_wake_all_queues(ndev
);
1754 static int netcp_rx_add_vid(struct net_device
*ndev
, __be16 proto
, u16 vid
)
1756 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1757 struct netcp_intf_modpriv
*intf_modpriv
;
1758 struct netcp_module
*module
;
1759 unsigned long flags
;
1762 dev_dbg(netcp
->ndev_dev
, "adding rx vlan id: %d\n", vid
);
1764 spin_lock_irqsave(&netcp
->lock
, flags
);
1765 for_each_module(netcp
, intf_modpriv
) {
1766 module
= intf_modpriv
->netcp_module
;
1767 if ((module
->add_vid
) && (vid
!= 0)) {
1768 err
= module
->add_vid(intf_modpriv
->module_priv
, vid
);
1770 dev_err(netcp
->ndev_dev
, "Could not add vlan id = %d\n",
1776 spin_unlock_irqrestore(&netcp
->lock
, flags
);
1781 static int netcp_rx_kill_vid(struct net_device
*ndev
, __be16 proto
, u16 vid
)
1783 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1784 struct netcp_intf_modpriv
*intf_modpriv
;
1785 struct netcp_module
*module
;
1786 unsigned long flags
;
1789 dev_dbg(netcp
->ndev_dev
, "removing rx vlan id: %d\n", vid
);
1791 spin_lock_irqsave(&netcp
->lock
, flags
);
1792 for_each_module(netcp
, intf_modpriv
) {
1793 module
= intf_modpriv
->netcp_module
;
1794 if (module
->del_vid
) {
1795 err
= module
->del_vid(intf_modpriv
->module_priv
, vid
);
1797 dev_err(netcp
->ndev_dev
, "Could not delete vlan id = %d\n",
1803 spin_unlock_irqrestore(&netcp
->lock
, flags
);
1807 static u16
netcp_select_queue(struct net_device
*dev
, struct sk_buff
*skb
,
1809 select_queue_fallback_t fallback
)
1814 static int netcp_setup_tc(struct net_device
*dev
, u8 num_tc
)
1818 /* setup tc must be called under rtnl lock */
1821 /* Sanity-check the number of traffic classes requested */
1822 if ((dev
->real_num_tx_queues
<= 1) ||
1823 (dev
->real_num_tx_queues
< num_tc
))
1826 /* Configure traffic class to queue mappings */
1828 netdev_set_num_tc(dev
, num_tc
);
1829 for (i
= 0; i
< num_tc
; i
++)
1830 netdev_set_tc_queue(dev
, i
, 1, i
);
1832 netdev_reset_tc(dev
);
1838 static const struct net_device_ops netcp_netdev_ops
= {
1839 .ndo_open
= netcp_ndo_open
,
1840 .ndo_stop
= netcp_ndo_stop
,
1841 .ndo_start_xmit
= netcp_ndo_start_xmit
,
1842 .ndo_set_rx_mode
= netcp_set_rx_mode
,
1843 .ndo_do_ioctl
= netcp_ndo_ioctl
,
1844 .ndo_change_mtu
= netcp_ndo_change_mtu
,
1845 .ndo_set_mac_address
= eth_mac_addr
,
1846 .ndo_validate_addr
= eth_validate_addr
,
1847 .ndo_vlan_rx_add_vid
= netcp_rx_add_vid
,
1848 .ndo_vlan_rx_kill_vid
= netcp_rx_kill_vid
,
1849 .ndo_tx_timeout
= netcp_ndo_tx_timeout
,
1850 .ndo_select_queue
= netcp_select_queue
,
1851 .ndo_setup_tc
= netcp_setup_tc
,
1854 static int netcp_create_interface(struct netcp_device
*netcp_device
,
1855 struct device_node
*node_interface
)
1857 struct device
*dev
= netcp_device
->device
;
1858 struct device_node
*node
= dev
->of_node
;
1859 struct netcp_intf
*netcp
;
1860 struct net_device
*ndev
;
1861 resource_size_t size
;
1862 struct resource res
;
1863 void __iomem
*efuse
= NULL
;
1865 const void *mac_addr
;
1866 u8 efuse_mac_addr
[6];
1870 ndev
= alloc_etherdev_mqs(sizeof(*netcp
), 1, 1);
1872 dev_err(dev
, "Error allocating netdev\n");
1876 ndev
->features
|= NETIF_F_SG
;
1877 ndev
->features
|= NETIF_F_HW_VLAN_CTAG_FILTER
;
1878 ndev
->hw_features
= ndev
->features
;
1879 ndev
->vlan_features
|= NETIF_F_SG
;
1881 netcp
= netdev_priv(ndev
);
1882 spin_lock_init(&netcp
->lock
);
1883 INIT_LIST_HEAD(&netcp
->module_head
);
1884 INIT_LIST_HEAD(&netcp
->txhook_list_head
);
1885 INIT_LIST_HEAD(&netcp
->rxhook_list_head
);
1886 INIT_LIST_HEAD(&netcp
->addr_list
);
1887 netcp
->netcp_device
= netcp_device
;
1888 netcp
->dev
= netcp_device
->device
;
1890 netcp
->ndev_dev
= &ndev
->dev
;
1891 netcp
->msg_enable
= netif_msg_init(netcp_debug_level
, NETCP_DEBUG
);
1892 netcp
->tx_pause_threshold
= MAX_SKB_FRAGS
;
1893 netcp
->tx_resume_threshold
= netcp
->tx_pause_threshold
;
1894 netcp
->node_interface
= node_interface
;
1896 ret
= of_property_read_u32(node_interface
, "efuse-mac", &efuse_mac
);
1898 if (of_address_to_resource(node
, NETCP_EFUSE_REG_INDEX
, &res
)) {
1899 dev_err(dev
, "could not find efuse-mac reg resource\n");
1903 size
= resource_size(&res
);
1905 if (!devm_request_mem_region(dev
, res
.start
, size
,
1907 dev_err(dev
, "could not reserve resource\n");
1912 efuse
= devm_ioremap_nocache(dev
, res
.start
, size
);
1914 dev_err(dev
, "could not map resource\n");
1915 devm_release_mem_region(dev
, res
.start
, size
);
1920 emac_arch_get_mac_addr(efuse_mac_addr
, efuse
, efuse_mac
);
1921 if (is_valid_ether_addr(efuse_mac_addr
))
1922 ether_addr_copy(ndev
->dev_addr
, efuse_mac_addr
);
1924 random_ether_addr(ndev
->dev_addr
);
1926 devm_iounmap(dev
, efuse
);
1927 devm_release_mem_region(dev
, res
.start
, size
);
1929 mac_addr
= of_get_mac_address(node_interface
);
1931 ether_addr_copy(ndev
->dev_addr
, mac_addr
);
1933 random_ether_addr(ndev
->dev_addr
);
1936 ret
= of_property_read_string(node_interface
, "rx-channel",
1937 &netcp
->dma_chan_name
);
1939 dev_err(dev
, "missing \"rx-channel\" parameter\n");
1944 ret
= of_property_read_u32(node_interface
, "rx-queue",
1945 &netcp
->rx_queue_id
);
1947 dev_warn(dev
, "missing \"rx-queue\" parameter\n");
1948 netcp
->rx_queue_id
= KNAV_QUEUE_QPEND
;
1951 ret
= of_property_read_u32_array(node_interface
, "rx-queue-depth",
1952 netcp
->rx_queue_depths
,
1953 KNAV_DMA_FDQ_PER_CHAN
);
1955 dev_err(dev
, "missing \"rx-queue-depth\" parameter\n");
1956 netcp
->rx_queue_depths
[0] = 128;
1959 ret
= of_property_read_u32_array(node_interface
, "rx-pool", temp
, 2);
1961 dev_err(dev
, "missing \"rx-pool\" parameter\n");
1965 netcp
->rx_pool_size
= temp
[0];
1966 netcp
->rx_pool_region_id
= temp
[1];
1968 ret
= of_property_read_u32_array(node_interface
, "tx-pool", temp
, 2);
1970 dev_err(dev
, "missing \"tx-pool\" parameter\n");
1974 netcp
->tx_pool_size
= temp
[0];
1975 netcp
->tx_pool_region_id
= temp
[1];
1977 if (netcp
->tx_pool_size
< MAX_SKB_FRAGS
) {
1978 dev_err(dev
, "tx-pool size too small, must be atleast(%ld)\n",
1984 ret
= of_property_read_u32(node_interface
, "tx-completion-queue",
1985 &netcp
->tx_compl_qid
);
1987 dev_warn(dev
, "missing \"tx-completion-queue\" parameter\n");
1988 netcp
->tx_compl_qid
= KNAV_QUEUE_QPEND
;
1992 netif_napi_add(ndev
, &netcp
->rx_napi
, netcp_rx_poll
, NETCP_NAPI_WEIGHT
);
1993 netif_napi_add(ndev
, &netcp
->tx_napi
, netcp_tx_poll
, NETCP_NAPI_WEIGHT
);
1995 /* Register the network device */
1997 ndev
->watchdog_timeo
= NETCP_TX_TIMEOUT
;
1998 ndev
->netdev_ops
= &netcp_netdev_ops
;
1999 SET_NETDEV_DEV(ndev
, dev
);
2001 list_add_tail(&netcp
->interface_list
, &netcp_device
->interface_head
);
2009 static void netcp_delete_interface(struct netcp_device
*netcp_device
,
2010 struct net_device
*ndev
)
2012 struct netcp_intf_modpriv
*intf_modpriv
, *tmp
;
2013 struct netcp_intf
*netcp
= netdev_priv(ndev
);
2014 struct netcp_module
*module
;
2016 dev_dbg(netcp_device
->device
, "Removing interface \"%s\"\n",
2019 /* Notify each of the modules that the interface is going away */
2020 list_for_each_entry_safe(intf_modpriv
, tmp
, &netcp
->module_head
,
2022 module
= intf_modpriv
->netcp_module
;
2023 dev_dbg(netcp_device
->device
, "Releasing module \"%s\"\n",
2025 if (module
->release
)
2026 module
->release(intf_modpriv
->module_priv
);
2027 list_del(&intf_modpriv
->intf_list
);
2028 kfree(intf_modpriv
);
2030 WARN(!list_empty(&netcp
->module_head
), "%s interface module list is not empty!\n",
2033 list_del(&netcp
->interface_list
);
2035 of_node_put(netcp
->node_interface
);
2036 unregister_netdev(ndev
);
2037 netif_napi_del(&netcp
->rx_napi
);
2041 static int netcp_probe(struct platform_device
*pdev
)
2043 struct device_node
*node
= pdev
->dev
.of_node
;
2044 struct netcp_intf
*netcp_intf
, *netcp_tmp
;
2045 struct device_node
*child
, *interfaces
;
2046 struct netcp_device
*netcp_device
;
2047 struct device
*dev
= &pdev
->dev
;
2051 dev_err(dev
, "could not find device info\n");
2055 /* Allocate a new NETCP device instance */
2056 netcp_device
= devm_kzalloc(dev
, sizeof(*netcp_device
), GFP_KERNEL
);
2060 pm_runtime_enable(&pdev
->dev
);
2061 ret
= pm_runtime_get_sync(&pdev
->dev
);
2063 dev_err(dev
, "Failed to enable NETCP power-domain\n");
2064 pm_runtime_disable(&pdev
->dev
);
2068 /* Initialize the NETCP device instance */
2069 INIT_LIST_HEAD(&netcp_device
->interface_head
);
2070 INIT_LIST_HEAD(&netcp_device
->modpriv_head
);
2071 netcp_device
->device
= dev
;
2072 platform_set_drvdata(pdev
, netcp_device
);
2074 /* create interfaces */
2075 interfaces
= of_get_child_by_name(node
, "netcp-interfaces");
2077 dev_err(dev
, "could not find netcp-interfaces node\n");
2082 for_each_available_child_of_node(interfaces
, child
) {
2083 ret
= netcp_create_interface(netcp_device
, child
);
2085 dev_err(dev
, "could not create interface(%s)\n",
2087 goto probe_quit_interface
;
2091 /* Add the device instance to the list */
2092 list_add_tail(&netcp_device
->device_list
, &netcp_devices
);
2096 probe_quit_interface
:
2097 list_for_each_entry_safe(netcp_intf
, netcp_tmp
,
2098 &netcp_device
->interface_head
,
2100 netcp_delete_interface(netcp_device
, netcp_intf
->ndev
);
2104 pm_runtime_put_sync(&pdev
->dev
);
2105 pm_runtime_disable(&pdev
->dev
);
2106 platform_set_drvdata(pdev
, NULL
);
2110 static int netcp_remove(struct platform_device
*pdev
)
2112 struct netcp_device
*netcp_device
= platform_get_drvdata(pdev
);
2113 struct netcp_intf
*netcp_intf
, *netcp_tmp
;
2114 struct netcp_inst_modpriv
*inst_modpriv
, *tmp
;
2115 struct netcp_module
*module
;
2117 list_for_each_entry_safe(inst_modpriv
, tmp
, &netcp_device
->modpriv_head
,
2119 module
= inst_modpriv
->netcp_module
;
2120 dev_dbg(&pdev
->dev
, "Removing module \"%s\"\n", module
->name
);
2121 module
->remove(netcp_device
, inst_modpriv
->module_priv
);
2122 list_del(&inst_modpriv
->inst_list
);
2123 kfree(inst_modpriv
);
2126 /* now that all modules are removed, clean up the interfaces */
2127 list_for_each_entry_safe(netcp_intf
, netcp_tmp
,
2128 &netcp_device
->interface_head
,
2130 netcp_delete_interface(netcp_device
, netcp_intf
->ndev
);
2133 WARN(!list_empty(&netcp_device
->interface_head
),
2134 "%s interface list not empty!\n", pdev
->name
);
2136 pm_runtime_put_sync(&pdev
->dev
);
2137 pm_runtime_disable(&pdev
->dev
);
2138 platform_set_drvdata(pdev
, NULL
);
2142 static const struct of_device_id of_match
[] = {
2143 { .compatible
= "ti,netcp-1.0", },
2146 MODULE_DEVICE_TABLE(of
, of_match
);
2148 static struct platform_driver netcp_driver
= {
2150 .name
= "netcp-1.0",
2151 .of_match_table
= of_match
,
2153 .probe
= netcp_probe
,
2154 .remove
= netcp_remove
,
2156 module_platform_driver(netcp_driver
);
2158 MODULE_LICENSE("GPL v2");
2159 MODULE_DESCRIPTION("TI NETCP driver for Keystone SOCs");
2160 MODULE_AUTHOR("Sandeep Nair <sandeep_n@ti.com");