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1 | /* |
2 | * Copyright (c) 2014-2015 Hisilicon Limited. |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by |
6 | * the Free Software Foundation; either version 2 of the License, or |
7 | * (at your option) any later version. |
8 | */ |
9 | |
10 | #ifndef __HNAE_H |
11 | #define __HNAE_H |
12 | |
13 | /* Names used in this framework: |
14 | * ae handle (handle): |
15 | * a set of queues provided by AE |
16 | * ring buffer queue (rbq): |
17 | * the channel between upper layer and the AE, can do tx and rx |
18 | * ring: |
19 | * a tx or rx channel within a rbq |
20 | * ring description (desc): |
21 | * an element in the ring with packet information |
22 | * buffer: |
23 | * a memory region referred by desc with the full packet payload |
24 | * |
25 | * "num" means a static number set as a parameter, "count" mean a dynamic |
26 | * number set while running |
27 | * "cb" means control block |
28 | */ |
29 | |
30 | #include <linux/delay.h> |
31 | #include <linux/device.h> |
32 | #include <linux/module.h> |
33 | #include <linux/netdevice.h> |
34 | #include <linux/notifier.h> |
99dcc7df |
35 | #include <linux/phy.h> |
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36 | #include <linux/types.h> |
37 | |
38 | #define HNAE_DRIVER_VERSION "1.3.0" |
39 | #define HNAE_DRIVER_NAME "hns" |
40 | #define HNAE_COPYRIGHT "Copyright(c) 2015 Huawei Corporation." |
41 | #define HNAE_DRIVER_STRING "Hisilicon Network Subsystem Driver" |
42 | #define HNAE_DEFAULT_DEVICE_DESCR "Hisilicon Network Subsystem" |
43 | |
44 | #ifdef DEBUG |
45 | |
46 | #ifndef assert |
47 | #define assert(expr) \ |
48 | do { \ |
49 | if (!(expr)) { \ |
50 | pr_err("Assertion failed! %s, %s, %s, line %d\n", \ |
51 | #expr, __FILE__, __func__, __LINE__); \ |
52 | } \ |
53 | } while (0) |
54 | #endif |
55 | |
56 | #else |
57 | |
58 | #ifndef assert |
59 | #define assert(expr) |
60 | #endif |
61 | |
62 | #endif |
63 | |
64 | #define AE_VERSION_1 ('6' << 16 | '6' << 8 | '0') |
65 | #define AE_VERSION_2 ('1' << 24 | '6' << 16 | '1' << 8 | '0') |
66 | #define AE_NAME_SIZE 16 |
67 | |
68 | /* some said the RX and TX RCB format should not be the same in the future. But |
69 | * it is the same now... |
70 | */ |
71 | #define RCB_REG_BASEADDR_L 0x00 /* P660 support only 32bit accessing */ |
72 | #define RCB_REG_BASEADDR_H 0x04 |
73 | #define RCB_REG_BD_NUM 0x08 |
74 | #define RCB_REG_BD_LEN 0x0C |
75 | #define RCB_REG_PKTLINE 0x10 |
76 | #define RCB_REG_TAIL 0x18 |
77 | #define RCB_REG_HEAD 0x1C |
78 | #define RCB_REG_FBDNUM 0x20 |
79 | #define RCB_REG_OFFSET 0x24 /* pkt num to be handled */ |
80 | #define RCB_REG_PKTNUM_RECORD 0x2C /* total pkt received */ |
81 | |
82 | #define HNS_RX_HEAD_SIZE 256 |
83 | |
84 | #define HNAE_AE_REGISTER 0x1 |
85 | |
86 | #define RCB_RING_NAME_LEN 16 |
87 | |
88 | enum hnae_led_state { |
89 | HNAE_LED_INACTIVE, |
90 | HNAE_LED_ACTIVE, |
91 | HNAE_LED_ON, |
92 | HNAE_LED_OFF |
93 | }; |
94 | |
95 | #define HNS_RX_FLAG_VLAN_PRESENT 0x1 |
96 | #define HNS_RX_FLAG_L3ID_IPV4 0x0 |
97 | #define HNS_RX_FLAG_L3ID_IPV6 0x1 |
98 | #define HNS_RX_FLAG_L4ID_UDP 0x0 |
99 | #define HNS_RX_FLAG_L4ID_TCP 0x1 |
100 | |
101 | #define HNS_TXD_ASID_S 0 |
102 | #define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S) |
103 | #define HNS_TXD_BUFNUM_S 8 |
104 | #define HNS_TXD_BUFNUM_M (0x3 << HNS_TXD_BUFNUM_S) |
105 | #define HNS_TXD_PORTID_S 10 |
106 | #define HNS_TXD_PORTID_M (0x7 << HNS_TXD_PORTID_S) |
107 | |
108 | #define HNS_TXD_RA_B 8 |
109 | #define HNS_TXD_RI_B 9 |
110 | #define HNS_TXD_L4CS_B 10 |
111 | #define HNS_TXD_L3CS_B 11 |
112 | #define HNS_TXD_FE_B 12 |
113 | #define HNS_TXD_VLD_B 13 |
114 | #define HNS_TXD_IPOFFSET_S 14 |
115 | #define HNS_TXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S) |
116 | |
117 | #define HNS_RXD_IPOFFSET_S 0 |
118 | #define HNS_RXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S) |
119 | #define HNS_RXD_BUFNUM_S 8 |
120 | #define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S) |
121 | #define HNS_RXD_PORTID_S 10 |
122 | #define HNS_RXD_PORTID_M (0x7 << HNS_RXD_PORTID_S) |
123 | #define HNS_RXD_DMAC_S 13 |
124 | #define HNS_RXD_DMAC_M (0x3 << HNS_RXD_DMAC_S) |
125 | #define HNS_RXD_VLAN_S 15 |
126 | #define HNS_RXD_VLAN_M (0x3 << HNS_RXD_VLAN_S) |
127 | #define HNS_RXD_L3ID_S 17 |
128 | #define HNS_RXD_L3ID_M (0xf << HNS_RXD_L3ID_S) |
129 | #define HNS_RXD_L4ID_S 21 |
130 | #define HNS_RXD_L4ID_M (0xf << HNS_RXD_L4ID_S) |
131 | #define HNS_RXD_FE_B 25 |
132 | #define HNS_RXD_FRAG_B 26 |
133 | #define HNS_RXD_VLD_B 27 |
134 | #define HNS_RXD_L2E_B 28 |
135 | #define HNS_RXD_L3E_B 29 |
136 | #define HNS_RXD_L4E_B 30 |
137 | #define HNS_RXD_DROP_B 31 |
138 | |
139 | #define HNS_RXD_VLANID_S 8 |
140 | #define HNS_RXD_VLANID_M (0xfff << HNS_RXD_VLANID_S) |
141 | #define HNS_RXD_CFI_B 20 |
142 | #define HNS_RXD_PRI_S 21 |
143 | #define HNS_RXD_PRI_M (0x7 << HNS_RXD_PRI_S) |
144 | #define HNS_RXD_ASID_S 24 |
145 | #define HNS_RXD_ASID_M (0xff << HNS_RXD_ASID_S) |
146 | |
147 | /* hardware spec ring buffer format */ |
148 | struct __packed hnae_desc { |
149 | __le64 addr; |
150 | union { |
151 | struct { |
152 | __le16 asid_bufnum_pid; |
153 | __le16 send_size; |
154 | __le32 flag_ipoffset; |
155 | __le32 reserved_3[4]; |
156 | } tx; |
157 | |
158 | struct { |
159 | __le32 ipoff_bnum_pid_flag; |
160 | __le16 pkt_len; |
161 | __le16 size; |
162 | __le32 vlan_pri_asid; |
163 | __le32 reserved_2[3]; |
164 | } rx; |
165 | }; |
166 | }; |
167 | |
168 | struct hnae_desc_cb { |
169 | dma_addr_t dma; /* dma address of this desc */ |
170 | void *buf; /* cpu addr for a desc */ |
171 | |
172 | /* priv data for the desc, e.g. skb when use with ip stack*/ |
173 | void *priv; |
174 | u16 page_offset; |
175 | u16 reuse_flag; |
176 | |
177 | u16 length; /* length of the buffer */ |
178 | |
179 | /* desc type, used by the ring user to mark the type of the priv data */ |
180 | u16 type; |
181 | }; |
182 | |
183 | #define setflags(flags, bits) ((flags) |= (bits)) |
184 | #define unsetflags(flags, bits) ((flags) &= ~(bits)) |
185 | |
186 | /* hnae_ring->flags fields */ |
187 | #define RINGF_DIR 0x1 /* TX or RX ring, set if TX */ |
188 | #define is_tx_ring(ring) ((ring)->flags & RINGF_DIR) |
189 | #define is_rx_ring(ring) (!is_tx_ring(ring)) |
190 | #define ring_to_dma_dir(ring) (is_tx_ring(ring) ? \ |
191 | DMA_TO_DEVICE : DMA_FROM_DEVICE) |
192 | |
193 | struct ring_stats { |
194 | u64 io_err_cnt; |
195 | u64 sw_err_cnt; |
196 | u64 seg_pkt_cnt; |
197 | union { |
198 | struct { |
199 | u64 tx_pkts; |
200 | u64 tx_bytes; |
201 | u64 tx_err_cnt; |
202 | u64 restart_queue; |
203 | u64 tx_busy; |
204 | }; |
205 | struct { |
206 | u64 rx_pkts; |
207 | u64 rx_bytes; |
208 | u64 rx_err_cnt; |
209 | u64 reuse_pg_cnt; |
210 | u64 err_pkt_len; |
211 | u64 non_vld_descs; |
212 | u64 err_bd_num; |
213 | u64 l2_err; |
214 | u64 l3l4_csum_err; |
215 | }; |
216 | }; |
217 | }; |
218 | |
219 | struct hnae_queue; |
220 | |
221 | struct hnae_ring { |
222 | u8 __iomem *io_base; /* base io address for the ring */ |
223 | struct hnae_desc *desc; /* dma map address space */ |
224 | struct hnae_desc_cb *desc_cb; |
225 | struct hnae_queue *q; |
226 | int irq; |
227 | char ring_name[RCB_RING_NAME_LEN]; |
228 | |
229 | /* statistic */ |
230 | struct ring_stats stats; |
231 | |
232 | dma_addr_t desc_dma_addr; |
233 | u32 buf_size; /* size for hnae_desc->addr, preset by AE */ |
234 | u16 desc_num; /* total number of desc */ |
235 | u16 max_desc_num_per_pkt; |
236 | u16 max_raw_data_sz_per_desc; |
237 | u16 max_pkt_size; |
238 | int next_to_use; /* idx of next spare desc */ |
239 | |
240 | /* idx of lastest sent desc, the ring is empty when equal to |
241 | * next_to_use |
242 | */ |
243 | int next_to_clean; |
244 | |
245 | int flags; /* ring attribute */ |
246 | int irq_init_flag; |
247 | }; |
248 | |
249 | #define ring_ptr_move_fw(ring, p) \ |
250 | ((ring)->p = ((ring)->p + 1) % (ring)->desc_num) |
251 | #define ring_ptr_move_bw(ring, p) \ |
252 | ((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num) |
253 | |
254 | enum hns_desc_type { |
255 | DESC_TYPE_SKB, |
256 | DESC_TYPE_PAGE, |
257 | }; |
258 | |
259 | #define assert_is_ring_idx(ring, idx) \ |
260 | assert((idx) >= 0 && (idx) < (ring)->desc_num) |
261 | |
262 | /* the distance between [begin, end) in a ring buffer |
263 | * note: there is a unuse slot between the begin and the end |
264 | */ |
265 | static inline int ring_dist(struct hnae_ring *ring, int begin, int end) |
266 | { |
267 | assert_is_ring_idx(ring, begin); |
268 | assert_is_ring_idx(ring, end); |
269 | |
270 | return (end - begin + ring->desc_num) % ring->desc_num; |
271 | } |
272 | |
273 | static inline int ring_space(struct hnae_ring *ring) |
274 | { |
275 | return ring->desc_num - |
276 | ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1; |
277 | } |
278 | |
279 | static inline int is_ring_empty(struct hnae_ring *ring) |
280 | { |
281 | assert_is_ring_idx(ring, ring->next_to_use); |
282 | assert_is_ring_idx(ring, ring->next_to_clean); |
283 | |
284 | return ring->next_to_use == ring->next_to_clean; |
285 | } |
286 | |
287 | #define hnae_buf_size(_ring) ((_ring)->buf_size) |
288 | #define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring))) |
289 | #define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring)) |
290 | |
291 | struct hnae_handle; |
292 | |
293 | /* allocate and dma map space for hnae desc */ |
294 | struct hnae_buf_ops { |
295 | int (*alloc_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); |
296 | void (*free_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); |
297 | int (*map_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); |
298 | void (*unmap_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); |
299 | }; |
300 | |
301 | struct hnae_queue { |
302 | void __iomem *io_base; |
303 | phys_addr_t phy_base; |
304 | struct hnae_ae_dev *dev; /* the device who use this queue */ |
305 | struct hnae_ring rx_ring, tx_ring; |
306 | struct hnae_handle *handle; |
307 | }; |
308 | |
309 | /*hnae loop mode*/ |
310 | enum hnae_loop { |
311 | MAC_INTERNALLOOP_MAC = 0, |
312 | MAC_INTERNALLOOP_SERDES, |
313 | MAC_INTERNALLOOP_PHY, |
314 | MAC_LOOP_NONE, |
315 | }; |
316 | |
317 | /*hnae port type*/ |
318 | enum hnae_port_type { |
319 | HNAE_PORT_SERVICE = 0, |
320 | HNAE_PORT_DEBUG |
321 | }; |
322 | |
323 | /* This struct defines the operation on the handle. |
324 | * |
325 | * get_handle(): (mandatory) |
326 | * Get a handle from AE according to its name and options. |
327 | * the AE driver should manage the space used by handle and its queues while |
328 | * the HNAE framework will allocate desc and desc_cb for all rings in the |
329 | * queues. |
330 | * put_handle(): |
331 | * Release the handle. |
332 | * start(): |
333 | * Enable the hardware, include all queues |
334 | * stop(): |
335 | * Disable the hardware |
336 | * set_opts(): (mandatory) |
337 | * Set options to the AE |
338 | * get_opts(): (mandatory) |
339 | * Get options from the AE |
340 | * get_status(): |
341 | * Get the carrier state of the back channel of the handle, 1 for ok, 0 for |
342 | * non-ok |
343 | * toggle_ring_irq(): (mandatory) |
344 | * Set the ring irq to be enabled(0) or disable(1) |
345 | * toggle_queue_status(): (mandatory) |
346 | * Set the queue to be enabled(1) or disable(0), this will not change the |
347 | * ring irq state |
348 | * adjust_link() |
349 | * adjust link status |
350 | * set_loopback() |
351 | * set loopback |
352 | * get_ring_bdnum_limit() |
353 | * get ring bd number limit |
354 | * get_pauseparam() |
355 | * get tx and rx of pause frame use |
356 | * set_autoneg() |
357 | * set auto autonegotiation of pause frame use |
358 | * get_autoneg() |
359 | * get auto autonegotiation of pause frame use |
360 | * set_pauseparam() |
361 | * set tx and rx of pause frame use |
362 | * get_coalesce_usecs() |
363 | * get usecs to delay a TX interrupt after a packet is sent |
364 | * get_rx_max_coalesced_frames() |
365 | * get Maximum number of packets to be sent before a TX interrupt. |
366 | * set_coalesce_usecs() |
367 | * set usecs to delay a TX interrupt after a packet is sent |
368 | * set_coalesce_frames() |
369 | * set Maximum number of packets to be sent before a TX interrupt. |
370 | * get_ringnum() |
371 | * get RX/TX ring number |
372 | * get_max_ringnum() |
373 | * get RX/TX ring maximum number |
374 | * get_mac_addr() |
375 | * get mac address |
376 | * set_mac_addr() |
377 | * set mac address |
378 | * set_mc_addr() |
379 | * set multicast mode |
380 | * set_mtu() |
381 | * set mtu |
382 | * update_stats() |
383 | * update Old network device statistics |
384 | * get_ethtool_stats() |
385 | * get ethtool network device statistics |
386 | * get_strings() |
387 | * get a set of strings that describe the requested objects |
388 | * get_sset_count() |
389 | * get number of strings that @get_strings will write |
390 | * update_led_status() |
391 | * update the led status |
392 | * set_led_id() |
393 | * set led id |
394 | * get_regs() |
395 | * get regs dump |
396 | * get_regs_len() |
397 | * get the len of the regs dump |
398 | */ |
399 | struct hnae_ae_ops { |
400 | struct hnae_handle *(*get_handle)(struct hnae_ae_dev *dev, |
401 | u32 port_id); |
402 | void (*put_handle)(struct hnae_handle *handle); |
403 | void (*init_queue)(struct hnae_queue *q); |
404 | void (*fini_queue)(struct hnae_queue *q); |
405 | int (*start)(struct hnae_handle *handle); |
406 | void (*stop)(struct hnae_handle *handle); |
407 | void (*reset)(struct hnae_handle *handle); |
408 | int (*set_opts)(struct hnae_handle *handle, int type, void *opts); |
409 | int (*get_opts)(struct hnae_handle *handle, int type, void **opts); |
410 | int (*get_status)(struct hnae_handle *handle); |
411 | int (*get_info)(struct hnae_handle *handle, |
412 | u8 *auto_neg, u16 *speed, u8 *duplex); |
413 | void (*toggle_ring_irq)(struct hnae_ring *ring, u32 val); |
414 | void (*toggle_queue_status)(struct hnae_queue *queue, u32 val); |
415 | void (*adjust_link)(struct hnae_handle *handle, int speed, int duplex); |
416 | int (*set_loopback)(struct hnae_handle *handle, |
417 | enum hnae_loop loop_mode, int en); |
418 | void (*get_ring_bdnum_limit)(struct hnae_queue *queue, |
419 | u32 *uplimit); |
420 | void (*get_pauseparam)(struct hnae_handle *handle, |
421 | u32 *auto_neg, u32 *rx_en, u32 *tx_en); |
422 | int (*set_autoneg)(struct hnae_handle *handle, u8 enable); |
423 | int (*get_autoneg)(struct hnae_handle *handle); |
424 | int (*set_pauseparam)(struct hnae_handle *handle, |
425 | u32 auto_neg, u32 rx_en, u32 tx_en); |
426 | void (*get_coalesce_usecs)(struct hnae_handle *handle, |
427 | u32 *tx_usecs, u32 *rx_usecs); |
428 | void (*get_rx_max_coalesced_frames)(struct hnae_handle *handle, |
429 | u32 *tx_frames, u32 *rx_frames); |
430 | void (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout); |
431 | int (*set_coalesce_frames)(struct hnae_handle *handle, |
432 | u32 coalesce_frames); |
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433 | void (*set_promisc_mode)(struct hnae_handle *handle, u32 en); |
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434 | int (*get_mac_addr)(struct hnae_handle *handle, void **p); |
435 | int (*set_mac_addr)(struct hnae_handle *handle, void *p); |
436 | int (*set_mc_addr)(struct hnae_handle *handle, void *addr); |
437 | int (*set_mtu)(struct hnae_handle *handle, int new_mtu); |
438 | void (*update_stats)(struct hnae_handle *handle, |
439 | struct net_device_stats *net_stats); |
440 | void (*get_stats)(struct hnae_handle *handle, u64 *data); |
441 | void (*get_strings)(struct hnae_handle *handle, |
442 | u32 stringset, u8 *data); |
443 | int (*get_sset_count)(struct hnae_handle *handle, int stringset); |
444 | void (*update_led_status)(struct hnae_handle *handle); |
445 | int (*set_led_id)(struct hnae_handle *handle, |
446 | enum hnae_led_state status); |
447 | void (*get_regs)(struct hnae_handle *handle, void *data); |
448 | int (*get_regs_len)(struct hnae_handle *handle); |
449 | }; |
450 | |
451 | struct hnae_ae_dev { |
452 | struct device cls_dev; /* the class dev */ |
453 | struct device *dev; /* the presented dev */ |
454 | struct hnae_ae_ops *ops; |
455 | struct list_head node; |
456 | struct module *owner; /* the module who provides this dev */ |
457 | int id; |
458 | char name[AE_NAME_SIZE]; |
459 | struct list_head handle_list; |
460 | spinlock_t lock; /* lock to protect the handle_list */ |
461 | }; |
462 | |
463 | struct hnae_handle { |
464 | struct device *owner_dev; /* the device which make use of this handle */ |
465 | struct hnae_ae_dev *dev; /* the device who provides this handle */ |
466 | struct device_node *phy_node; |
467 | phy_interface_t phy_if; |
468 | u32 if_support; |
469 | int q_num; |
470 | int vf_id; |
471 | u32 eport_id; |
472 | enum hnae_port_type port_type; |
473 | struct list_head node; /* list to hnae_ae_dev->handle_list */ |
474 | struct hnae_buf_ops *bops; /* operation for the buffer */ |
475 | struct hnae_queue **qs; /* array base of all queues */ |
476 | }; |
477 | |
478 | #define ring_to_dev(ring) ((ring)->q->dev->dev) |
479 | |
480 | struct hnae_handle *hnae_get_handle(struct device *owner_dev, const char *ae_id, |
481 | u32 port_id, struct hnae_buf_ops *bops); |
482 | void hnae_put_handle(struct hnae_handle *handle); |
483 | int hnae_ae_register(struct hnae_ae_dev *dev, struct module *owner); |
484 | void hnae_ae_unregister(struct hnae_ae_dev *dev); |
485 | |
486 | int hnae_register_notifier(struct notifier_block *nb); |
487 | void hnae_unregister_notifier(struct notifier_block *nb); |
488 | int hnae_reinit_handle(struct hnae_handle *handle); |
489 | |
490 | #define hnae_queue_xmit(q, buf_num) writel_relaxed(buf_num, \ |
491 | (q)->tx_ring.io_base + RCB_REG_TAIL) |
492 | |
493 | #ifndef assert |
494 | #define assert(cond) |
495 | #endif |
496 | |
497 | static inline int hnae_reserve_buffer_map(struct hnae_ring *ring, |
498 | struct hnae_desc_cb *cb) |
499 | { |
500 | struct hnae_buf_ops *bops = ring->q->handle->bops; |
501 | int ret; |
502 | |
503 | ret = bops->alloc_buffer(ring, cb); |
504 | if (ret) |
505 | goto out; |
506 | |
507 | ret = bops->map_buffer(ring, cb); |
508 | if (ret) |
509 | goto out_with_buf; |
510 | |
511 | return 0; |
512 | |
513 | out_with_buf: |
514 | bops->free_buffer(ring, cb); |
515 | out: |
516 | return ret; |
517 | } |
518 | |
519 | static inline int hnae_alloc_buffer_attach(struct hnae_ring *ring, int i) |
520 | { |
521 | int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]); |
522 | |
523 | if (ret) |
524 | return ret; |
525 | |
526 | ring->desc[i].addr = (__le64)ring->desc_cb[i].dma; |
527 | |
528 | return 0; |
529 | } |
530 | |
531 | static inline void hnae_buffer_detach(struct hnae_ring *ring, int i) |
532 | { |
533 | ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]); |
534 | ring->desc[i].addr = 0; |
535 | } |
536 | |
537 | static inline void hnae_free_buffer_detach(struct hnae_ring *ring, int i) |
538 | { |
539 | struct hnae_buf_ops *bops = ring->q->handle->bops; |
540 | struct hnae_desc_cb *cb = &ring->desc_cb[i]; |
541 | |
542 | if (!ring->desc_cb[i].dma) |
543 | return; |
544 | |
545 | hnae_buffer_detach(ring, i); |
546 | bops->free_buffer(ring, cb); |
547 | } |
548 | |
549 | /* detach a in-used buffer and replace with a reserved one */ |
550 | static inline void hnae_replace_buffer(struct hnae_ring *ring, int i, |
551 | struct hnae_desc_cb *res_cb) |
552 | { |
553 | struct hnae_buf_ops *bops = ring->q->handle->bops; |
554 | struct hnae_desc_cb tmp_cb = ring->desc_cb[i]; |
555 | |
556 | bops->unmap_buffer(ring, &ring->desc_cb[i]); |
557 | ring->desc_cb[i] = *res_cb; |
558 | *res_cb = tmp_cb; |
559 | ring->desc[i].addr = (__le64)ring->desc_cb[i].dma; |
560 | ring->desc[i].rx.ipoff_bnum_pid_flag = 0; |
561 | } |
562 | |
563 | static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i) |
564 | { |
565 | ring->desc_cb[i].reuse_flag = 0; |
566 | ring->desc[i].addr = (__le64)(ring->desc_cb[i].dma |
567 | + ring->desc_cb[i].page_offset); |
568 | ring->desc[i].rx.ipoff_bnum_pid_flag = 0; |
569 | } |
570 | |
571 | #define hnae_set_field(origin, mask, shift, val) \ |
572 | do { \ |
573 | (origin) &= (~(mask)); \ |
574 | (origin) |= ((val) << (shift)) & (mask); \ |
575 | } while (0) |
576 | |
577 | #define hnae_set_bit(origin, shift, val) \ |
578 | hnae_set_field((origin), (0x1 << (shift)), (shift), (val)) |
579 | |
580 | #define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift)) |
581 | |
582 | #define hnae_get_bit(origin, shift) \ |
583 | hnae_get_field((origin), (0x1 << (shift)), (shift)) |
584 | |
585 | #endif |