]>
git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - drivers/net/ethernet/cavium/liquidio/octeon_network.h
1 /**********************************************************************
4 * Contact: support@cavium.com
5 * Please include "LiquidIO" in the subject.
7 * Copyright (c) 2003-2016 Cavium, Inc.
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more
18 **********************************************************************/
20 /*! \file octeon_network.h
21 * \brief Host NIC Driver: Structure and Macro definitions used by NIC Module.
24 #ifndef __OCTEON_NETWORK_H__
25 #define __OCTEON_NETWORK_H__
26 #include <linux/ptp_clock_kernel.h>
28 #define LIO_MAX_MTU_SIZE (OCTNET_MAX_FRM_SIZE - OCTNET_FRM_HEADER_SIZE)
29 #define LIO_MIN_MTU_SIZE ETH_MIN_MTU
31 struct oct_nic_stats_resp
{
33 struct oct_link_stats stats
;
37 struct oct_nic_stats_ctrl
{
38 struct completion complete
;
39 struct net_device
*netdev
;
42 /** LiquidIO per-interface network private data */
44 /** State of the interface. Rx/Tx happens only in the RUNNING state. */
47 /** Octeon Interface index number. This device will be represented as
48 * oct<ifidx> in the system.
52 /** Octeon Input queue to use to transmit for this network interface. */
55 /** Octeon Output queue from which pkts arrive
56 * for this network interface.
60 /** Guards each glist */
61 spinlock_t
*glist_lock
;
63 /** Array of gather component linked lists */
64 struct list_head
*glist
;
65 void **glists_virt_base
;
66 dma_addr_t
*glists_dma_base
;
69 /** Pointer to the NIC properties for the Octeon device this network
70 * interface is associated with.
72 struct octdev_props
*octprops
;
74 /** Pointer to the octeon device structure. */
75 struct octeon_device
*oct_dev
;
77 struct net_device
*netdev
;
79 /** Link information sent by the core application for this interface. */
80 struct oct_link_info linfo
;
82 /** counter of link changes */
85 /** Size of Tx queue for this octeon device. */
88 /** Size of Rx queue for this octeon device. */
91 /** Size of MTU this octeon device. */
94 /** msg level flag per interface. */
97 /** Copy of Interface capabilities: TSO, TSO6, LRO, Chescksums . */
100 /* Copy of transmit encapsulation capabilities:
101 * TSO, TSO6, Checksums for this device for Kernel
104 u64 enc_dev_capability
;
106 /** Copy of beacaon reg in phy */
109 /** Copy of ctrl reg in phy */
112 /* PTP clock information */
113 struct ptp_clock_info ptp_info
;
114 struct ptp_clock
*ptp_clock
;
117 /* for atomic access to Octeon PTP reg and data struct */
123 /* work queue for txq status */
124 struct cavium_wq txq_status_wq
;
126 /* work queue for link status */
127 struct cavium_wq link_status_wq
;
132 #define LIO_SIZE (sizeof(struct lio))
133 #define GET_LIO(netdev) ((struct lio *)netdev_priv(netdev))
135 #define CIU3_WDOG(c) (0x1010000020000ULL + ((c) << 3))
136 #define CIU3_WDOG_MASK 12ULL
137 #define LIO_MONITOR_WDOG_EXPIRE 1
138 #define LIO_MONITOR_CORE_STUCK_MSGD 2
139 #define LIO_MAX_CORES 12
142 * \brief Enable or disable feature
143 * @param netdev pointer to network device
144 * @param cmd Command that just requires acknowledgment
145 * @param param1 Parameter to command
147 int liquidio_set_feature(struct net_device
*netdev
, int cmd
, u16 param1
);
150 * \brief Link control command completion callback
151 * @param nctrl_ptr pointer to control packet structure
153 * This routine is called by the callback function when a ctrl pkt sent to
154 * core app completes. The nctrl_ptr contains a copy of the command type
155 * and data sent to the core app. This routine is only called if the ctrl
156 * pkt was sent successfully to the core app.
158 void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr
);
161 * \brief Register ethtool operations
162 * @param netdev pointer to network device
164 void liquidio_set_ethtool_ops(struct net_device
*netdev
);
166 #define SKB_ADJ_MASK 0x3F
167 #define SKB_ADJ (SKB_ADJ_MASK + 1)
169 #define MIN_SKB_SIZE 256 /* 8 bytes and more - 8 bytes for PTP */
170 #define LIO_RXBUFFER_SZ 2048
173 *recv_buffer_alloc(struct octeon_device
*oct
,
174 struct octeon_skb_page_info
*pg_info
)
178 struct octeon_skb_page_info
*skb_pg_info
;
180 page
= alloc_page(GFP_ATOMIC
| __GFP_COLD
);
184 skb
= dev_alloc_skb(MIN_SKB_SIZE
+ SKB_ADJ
);
185 if (unlikely(!skb
)) {
187 pg_info
->page
= NULL
;
191 if ((unsigned long)skb
->data
& SKB_ADJ_MASK
) {
192 u32 r
= SKB_ADJ
- ((unsigned long)skb
->data
& SKB_ADJ_MASK
);
197 skb_pg_info
= ((struct octeon_skb_page_info
*)(skb
->cb
));
199 pg_info
->dma
= dma_map_page(&oct
->pci_dev
->dev
, page
, 0,
200 PAGE_SIZE
, DMA_FROM_DEVICE
);
202 /* Mapping failed!! */
203 if (dma_mapping_error(&oct
->pci_dev
->dev
, pg_info
->dma
)) {
205 dev_kfree_skb_any((struct sk_buff
*)skb
);
206 pg_info
->page
= NULL
;
210 pg_info
->page
= page
;
211 pg_info
->page_offset
= 0;
212 skb_pg_info
->page
= page
;
213 skb_pg_info
->page_offset
= 0;
214 skb_pg_info
->dma
= pg_info
->dma
;
220 *recv_buffer_fast_alloc(u32 size
)
223 struct octeon_skb_page_info
*skb_pg_info
;
225 skb
= dev_alloc_skb(size
+ SKB_ADJ
);
229 if ((unsigned long)skb
->data
& SKB_ADJ_MASK
) {
230 u32 r
= SKB_ADJ
- ((unsigned long)skb
->data
& SKB_ADJ_MASK
);
235 skb_pg_info
= ((struct octeon_skb_page_info
*)(skb
->cb
));
236 skb_pg_info
->page
= NULL
;
237 skb_pg_info
->page_offset
= 0;
238 skb_pg_info
->dma
= 0;
244 recv_buffer_recycle(struct octeon_device
*oct
, void *buf
)
246 struct octeon_skb_page_info
*pg_info
= buf
;
248 if (!pg_info
->page
) {
249 dev_err(&oct
->pci_dev
->dev
, "%s: pg_info->page NULL\n",
254 if (unlikely(page_count(pg_info
->page
) != 1) ||
255 unlikely(page_to_nid(pg_info
->page
) != numa_node_id())) {
256 dma_unmap_page(&oct
->pci_dev
->dev
,
257 pg_info
->dma
, (PAGE_SIZE
<< 0),
260 pg_info
->page
= NULL
;
261 pg_info
->page_offset
= 0;
265 /* Flip to other half of the buffer */
266 if (pg_info
->page_offset
== 0)
267 pg_info
->page_offset
= LIO_RXBUFFER_SZ
;
269 pg_info
->page_offset
= 0;
270 page_ref_inc(pg_info
->page
);
276 *recv_buffer_reuse(struct octeon_device
*oct
, void *buf
)
278 struct octeon_skb_page_info
*pg_info
= buf
, *skb_pg_info
;
281 skb
= dev_alloc_skb(MIN_SKB_SIZE
+ SKB_ADJ
);
282 if (unlikely(!skb
)) {
283 dma_unmap_page(&oct
->pci_dev
->dev
,
284 pg_info
->dma
, (PAGE_SIZE
<< 0),
289 if ((unsigned long)skb
->data
& SKB_ADJ_MASK
) {
290 u32 r
= SKB_ADJ
- ((unsigned long)skb
->data
& SKB_ADJ_MASK
);
295 skb_pg_info
= ((struct octeon_skb_page_info
*)(skb
->cb
));
296 skb_pg_info
->page
= pg_info
->page
;
297 skb_pg_info
->page_offset
= pg_info
->page_offset
;
298 skb_pg_info
->dma
= pg_info
->dma
;
304 recv_buffer_destroy(void *buffer
, struct octeon_skb_page_info
*pg_info
)
306 struct sk_buff
*skb
= (struct sk_buff
*)buffer
;
308 put_page(pg_info
->page
);
310 pg_info
->page
= NULL
;
311 pg_info
->page_offset
= 0;
314 dev_kfree_skb_any(skb
);
317 static inline void recv_buffer_free(void *buffer
)
319 struct sk_buff
*skb
= (struct sk_buff
*)buffer
;
320 struct octeon_skb_page_info
*pg_info
;
322 pg_info
= ((struct octeon_skb_page_info
*)(skb
->cb
));
325 put_page(pg_info
->page
);
327 pg_info
->page
= NULL
;
328 pg_info
->page_offset
= 0;
331 dev_kfree_skb_any((struct sk_buff
*)buffer
);
335 recv_buffer_fast_free(void *buffer
)
337 dev_kfree_skb_any((struct sk_buff
*)buffer
);
340 static inline void tx_buffer_free(void *buffer
)
342 dev_kfree_skb_any((struct sk_buff
*)buffer
);
345 #define lio_dma_alloc(oct, size, dma_addr) \
346 dma_alloc_coherent(&(oct)->pci_dev->dev, size, dma_addr, GFP_KERNEL)
347 #define lio_dma_free(oct, size, virt_addr, dma_addr) \
348 dma_free_coherent(&(oct)->pci_dev->dev, size, virt_addr, dma_addr)
351 lio_alloc_info_buffer(struct octeon_device
*oct
,
352 struct octeon_droq
*droq
)
356 virt_ptr
= lio_dma_alloc(oct
, (droq
->max_count
* OCT_DROQ_INFO_SIZE
),
357 &droq
->info_list_dma
);
359 droq
->info_alloc_size
= droq
->max_count
* OCT_DROQ_INFO_SIZE
;
360 droq
->info_base_addr
= virt_ptr
;
366 static inline void lio_free_info_buffer(struct octeon_device
*oct
,
367 struct octeon_droq
*droq
)
369 lio_dma_free(oct
, droq
->info_alloc_size
, droq
->info_base_addr
,
370 droq
->info_list_dma
);
374 void *get_rbd(struct sk_buff
*skb
)
376 struct octeon_skb_page_info
*pg_info
;
379 pg_info
= ((struct octeon_skb_page_info
*)(skb
->cb
));
380 va
= page_address(pg_info
->page
) + pg_info
->page_offset
;
386 lio_map_ring_info(struct octeon_droq
*droq
, u32 i
)
388 return droq
->info_list_dma
+ (i
* sizeof(struct octeon_droq_info
));
392 lio_map_ring(void *buf
)
396 struct sk_buff
*skb
= (struct sk_buff
*)buf
;
397 struct octeon_skb_page_info
*pg_info
;
399 pg_info
= ((struct octeon_skb_page_info
*)(skb
->cb
));
400 if (!pg_info
->page
) {
401 pr_err("%s: pg_info->page NULL\n", __func__
);
406 dma_addr
= pg_info
->dma
;
408 pr_err("%s: ERROR it should be already available\n",
412 dma_addr
+= pg_info
->page_offset
;
414 return (u64
)dma_addr
;
418 lio_unmap_ring(struct pci_dev
*pci_dev
,
422 dma_unmap_page(&pci_dev
->dev
,
423 buf_ptr
, (PAGE_SIZE
<< 0),
427 static inline void *octeon_fast_packet_alloc(u32 size
)
429 return recv_buffer_fast_alloc(size
);
432 static inline void octeon_fast_packet_next(struct octeon_droq
*droq
,
433 struct sk_buff
*nicbuf
,
437 memcpy(skb_put(nicbuf
, copy_len
),
438 get_rbd(droq
->recv_buf_list
[idx
].buffer
), copy_len
);