1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *  linux/drivers/net/ethernet/ibm/ehea/ehea.h
4  *
5  *  eHEA ethernet device driver for IBM eServer System p
6  *
7  *  (C) Copyright IBM Corp. 2006
8  *
9  *  Authors:
10  *       Christoph Raisch <raisch@de.ibm.com>
11  *       Jan-Bernd Themann <themann@de.ibm.com>
12  *       Thomas Klein <tklein@de.ibm.com>
13  */
14 
15 #ifndef __EHEA_H__
16 #define __EHEA_H__
17 
18 #include <linux/module.h>
19 #include <linux/ethtool.h>
20 #include <linux/vmalloc.h>
21 #include <linux/if_vlan.h>
22 #include <linux/platform_device.h>
23 
24 #include <asm/ibmebus.h>
25 #include <asm/io.h>
26 
27 #define DRV_NAME	"ehea"
28 #define DRV_VERSION	"EHEA_0107"
29 
30 /* eHEA capability flags */
31 #define DLPAR_PORT_ADD_REM 1
32 #define DLPAR_MEM_ADD      2
33 #define DLPAR_MEM_REM      4
34 #define EHEA_CAPABILITIES  (DLPAR_PORT_ADD_REM | DLPAR_MEM_ADD | DLPAR_MEM_REM)
35 
36 #define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \
37 	| NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
38 
39 #define EHEA_MAX_ENTRIES_RQ1 32767
40 #define EHEA_MAX_ENTRIES_RQ2 16383
41 #define EHEA_MAX_ENTRIES_RQ3 16383
42 #define EHEA_MAX_ENTRIES_SQ  32767
43 #define EHEA_MIN_ENTRIES_QP  127
44 
45 #define EHEA_SMALL_QUEUES
46 
47 #ifdef EHEA_SMALL_QUEUES
48 #define EHEA_MAX_CQE_COUNT      1023
49 #define EHEA_DEF_ENTRIES_SQ     1023
50 #define EHEA_DEF_ENTRIES_RQ1    1023
51 #define EHEA_DEF_ENTRIES_RQ2    1023
52 #define EHEA_DEF_ENTRIES_RQ3    511
53 #else
54 #define EHEA_MAX_CQE_COUNT      4080
55 #define EHEA_DEF_ENTRIES_SQ     4080
56 #define EHEA_DEF_ENTRIES_RQ1    8160
57 #define EHEA_DEF_ENTRIES_RQ2    2040
58 #define EHEA_DEF_ENTRIES_RQ3    2040
59 #endif
60 
61 #define EHEA_MAX_ENTRIES_EQ 20
62 
63 #define EHEA_SG_SQ  2
64 #define EHEA_SG_RQ1 1
65 #define EHEA_SG_RQ2 0
66 #define EHEA_SG_RQ3 0
67 
68 #define EHEA_MAX_PACKET_SIZE    9022	/* for jumbo frames */
69 #define EHEA_RQ2_PKT_SIZE       2048
70 #define EHEA_L_PKT_SIZE         256	/* low latency */
71 
72 /* Send completion signaling */
73 
74 /* Protection Domain Identifier */
75 #define EHEA_PD_ID        0xaabcdeff
76 
77 #define EHEA_RQ2_THRESHOLD 	   1
78 #define EHEA_RQ3_THRESHOLD	   4	/* use RQ3 threshold of 2048 bytes */
79 
80 #define EHEA_SPEED_10G         10000
81 #define EHEA_SPEED_1G           1000
82 #define EHEA_SPEED_100M          100
83 #define EHEA_SPEED_10M            10
84 #define EHEA_SPEED_AUTONEG         0
85 
86 /* Broadcast/Multicast registration types */
87 #define EHEA_BCMC_SCOPE_ALL	0x08
88 #define EHEA_BCMC_SCOPE_SINGLE	0x00
89 #define EHEA_BCMC_MULTICAST	0x04
90 #define EHEA_BCMC_BROADCAST	0x00
91 #define EHEA_BCMC_UNTAGGED	0x02
92 #define EHEA_BCMC_TAGGED	0x00
93 #define EHEA_BCMC_VLANID_ALL	0x01
94 #define EHEA_BCMC_VLANID_SINGLE	0x00
95 
96 #define EHEA_CACHE_LINE          128
97 
98 /* Memory Regions */
99 #define EHEA_MR_ACC_CTRL       0x00800000
100 
101 #define EHEA_BUSMAP_START      0x8000000000000000ULL
102 #define EHEA_INVAL_ADDR        0xFFFFFFFFFFFFFFFFULL
103 #define EHEA_DIR_INDEX_SHIFT 13                   /* 8k Entries in 64k block */
104 #define EHEA_TOP_INDEX_SHIFT (EHEA_DIR_INDEX_SHIFT * 2)
105 #define EHEA_MAP_ENTRIES (1 << EHEA_DIR_INDEX_SHIFT)
106 #define EHEA_MAP_SIZE (0x10000)                   /* currently fixed map size */
107 #define EHEA_INDEX_MASK (EHEA_MAP_ENTRIES - 1)
108 
109 
110 #define EHEA_WATCH_DOG_TIMEOUT 10*HZ
111 
112 /* utility functions */
113 
114 void ehea_dump(void *adr, int len, char *msg);
115 
116 #define EHEA_BMASK(pos, length) (((pos) << 16) + (length))
117 
118 #define EHEA_BMASK_IBM(from, to) (((63 - to) << 16) + ((to) - (from) + 1))
119 
120 #define EHEA_BMASK_SHIFTPOS(mask) (((mask) >> 16) & 0xffff)
121 
122 #define EHEA_BMASK_MASK(mask) \
123 	(0xffffffffffffffffULL >> ((64 - (mask)) & 0xffff))
124 
125 #define EHEA_BMASK_SET(mask, value) \
126 	((EHEA_BMASK_MASK(mask) & ((u64)(value))) << EHEA_BMASK_SHIFTPOS(mask))
127 
128 #define EHEA_BMASK_GET(mask, value) \
129 	(EHEA_BMASK_MASK(mask) & (((u64)(value)) >> EHEA_BMASK_SHIFTPOS(mask)))
130 
131 /*
132  * Generic ehea page
133  */
134 struct ehea_page {
135 	u8 entries[PAGE_SIZE];
136 };
137 
138 /*
139  * Generic queue in linux kernel virtual memory
140  */
141 struct hw_queue {
142 	u64 current_q_offset;		/* current queue entry */
143 	struct ehea_page **queue_pages;	/* array of pages belonging to queue */
144 	u32 qe_size;			/* queue entry size */
145 	u32 queue_length;      		/* queue length allocated in bytes */
146 	u32 pagesize;
147 	u32 toggle_state;		/* toggle flag - per page */
148 	u32 reserved;			/* 64 bit alignment */
149 };
150 
151 /*
152  * For pSeries this is a 64bit memory address where
153  * I/O memory is mapped into CPU address space
154  */
155 struct h_epa {
156 	void __iomem *addr;
157 };
158 
159 struct h_epa_user {
160 	u64 addr;
161 };
162 
163 struct h_epas {
164 	struct h_epa kernel;	/* kernel space accessible resource,
165 				   set to 0 if unused */
166 	struct h_epa_user user;	/* user space accessible resource
167 				   set to 0 if unused */
168 };
169 
170 /*
171  * Memory map data structures
172  */
173 struct ehea_dir_bmap
174 {
175 	u64 ent[EHEA_MAP_ENTRIES];
176 };
177 struct ehea_top_bmap
178 {
179 	struct ehea_dir_bmap *dir[EHEA_MAP_ENTRIES];
180 };
181 struct ehea_bmap
182 {
183 	struct ehea_top_bmap *top[EHEA_MAP_ENTRIES];
184 };
185 
186 struct ehea_qp;
187 struct ehea_cq;
188 struct ehea_eq;
189 struct ehea_port;
190 struct ehea_av;
191 
192 /*
193  * Queue attributes passed to ehea_create_qp()
194  */
195 struct ehea_qp_init_attr {
196 	/* input parameter */
197 	u32 qp_token;           /* queue token */
198 	u8 low_lat_rq1;
199 	u8 signalingtype;       /* cqe generation flag */
200 	u8 rq_count;            /* num of receive queues */
201 	u8 eqe_gen;             /* eqe generation flag */
202 	u16 max_nr_send_wqes;   /* max number of send wqes */
203 	u16 max_nr_rwqes_rq1;   /* max number of receive wqes */
204 	u16 max_nr_rwqes_rq2;
205 	u16 max_nr_rwqes_rq3;
206 	u8 wqe_size_enc_sq;
207 	u8 wqe_size_enc_rq1;
208 	u8 wqe_size_enc_rq2;
209 	u8 wqe_size_enc_rq3;
210 	u8 swqe_imm_data_len;   /* immediate data length for swqes */
211 	u16 port_nr;
212 	u16 rq2_threshold;
213 	u16 rq3_threshold;
214 	u64 send_cq_handle;
215 	u64 recv_cq_handle;
216 	u64 aff_eq_handle;
217 
218 	/* output parameter */
219 	u32 qp_nr;
220 	u16 act_nr_send_wqes;
221 	u16 act_nr_rwqes_rq1;
222 	u16 act_nr_rwqes_rq2;
223 	u16 act_nr_rwqes_rq3;
224 	u8 act_wqe_size_enc_sq;
225 	u8 act_wqe_size_enc_rq1;
226 	u8 act_wqe_size_enc_rq2;
227 	u8 act_wqe_size_enc_rq3;
228 	u32 nr_sq_pages;
229 	u32 nr_rq1_pages;
230 	u32 nr_rq2_pages;
231 	u32 nr_rq3_pages;
232 	u32 liobn_sq;
233 	u32 liobn_rq1;
234 	u32 liobn_rq2;
235 	u32 liobn_rq3;
236 };
237 
238 /*
239  * Event Queue attributes, passed as parameter
240  */
241 struct ehea_eq_attr {
242 	u32 type;
243 	u32 max_nr_of_eqes;
244 	u8 eqe_gen;        /* generate eqe flag */
245 	u64 eq_handle;
246 	u32 act_nr_of_eqes;
247 	u32 nr_pages;
248 	u32 ist1;          /* Interrupt service token */
249 	u32 ist2;
250 	u32 ist3;
251 	u32 ist4;
252 };
253 
254 
255 /*
256  * Event Queue
257  */
258 struct ehea_eq {
259 	struct ehea_adapter *adapter;
260 	struct hw_queue hw_queue;
261 	u64 fw_handle;
262 	struct h_epas epas;
263 	spinlock_t spinlock;
264 	struct ehea_eq_attr attr;
265 };
266 
267 /*
268  * HEA Queues
269  */
270 struct ehea_qp {
271 	struct ehea_adapter *adapter;
272 	u64 fw_handle;			/* QP handle for firmware calls */
273 	struct hw_queue hw_squeue;
274 	struct hw_queue hw_rqueue1;
275 	struct hw_queue hw_rqueue2;
276 	struct hw_queue hw_rqueue3;
277 	struct h_epas epas;
278 	struct ehea_qp_init_attr init_attr;
279 };
280 
281 /*
282  * Completion Queue attributes
283  */
284 struct ehea_cq_attr {
285 	/* input parameter */
286 	u32 max_nr_of_cqes;
287 	u32 cq_token;
288 	u64 eq_handle;
289 
290 	/* output parameter */
291 	u32 act_nr_of_cqes;
292 	u32 nr_pages;
293 };
294 
295 /*
296  * Completion Queue
297  */
298 struct ehea_cq {
299 	struct ehea_adapter *adapter;
300 	u64 fw_handle;
301 	struct hw_queue hw_queue;
302 	struct h_epas epas;
303 	struct ehea_cq_attr attr;
304 };
305 
306 /*
307  * Memory Region
308  */
309 struct ehea_mr {
310 	struct ehea_adapter *adapter;
311 	u64 handle;
312 	u64 vaddr;
313 	u32 lkey;
314 };
315 
316 /*
317  * Port state information
318  */
319 struct port_stats {
320 	int poll_receive_errors;
321 	int queue_stopped;
322 	int err_tcp_cksum;
323 	int err_ip_cksum;
324 	int err_frame_crc;
325 };
326 
327 #define EHEA_IRQ_NAME_SIZE 20
328 
329 /*
330  * Queue SKB Array
331  */
332 struct ehea_q_skb_arr {
333 	struct sk_buff **arr;		/* skb array for queue */
334 	int len;                	/* array length */
335 	int index;			/* array index */
336 	int os_skbs;			/* rq2/rq3 only: outstanding skbs */
337 };
338 
339 /*
340  * Port resources
341  */
342 struct ehea_port_res {
343 	struct napi_struct napi;
344 	struct port_stats p_stats;
345 	struct ehea_mr send_mr;       	/* send memory region */
346 	struct ehea_mr recv_mr;       	/* receive memory region */
347 	struct ehea_port *port;
348 	char int_recv_name[EHEA_IRQ_NAME_SIZE];
349 	char int_send_name[EHEA_IRQ_NAME_SIZE];
350 	struct ehea_qp *qp;
351 	struct ehea_cq *send_cq;
352 	struct ehea_cq *recv_cq;
353 	struct ehea_eq *eq;
354 	struct ehea_q_skb_arr rq1_skba;
355 	struct ehea_q_skb_arr rq2_skba;
356 	struct ehea_q_skb_arr rq3_skba;
357 	struct ehea_q_skb_arr sq_skba;
358 	int sq_skba_size;
359 	int swqe_refill_th;
360 	atomic_t swqe_avail;
361 	int swqe_ll_count;
362 	u32 swqe_id_counter;
363 	u64 tx_packets;
364 	u64 tx_bytes;
365 	u64 rx_packets;
366 	u64 rx_bytes;
367 	int sq_restart_flag;
368 };
369 
370 
371 #define EHEA_MAX_PORTS 16
372 
373 #define EHEA_NUM_PORTRES_FW_HANDLES    6  /* QP handle, SendCQ handle,
374 					     RecvCQ handle, EQ handle,
375 					     SendMR handle, RecvMR handle */
376 #define EHEA_NUM_PORT_FW_HANDLES       1  /* EQ handle */
377 #define EHEA_NUM_ADAPTER_FW_HANDLES    2  /* MR handle, NEQ handle */
378 
379 struct ehea_adapter {
380 	u64 handle;
381 	struct platform_device *ofdev;
382 	struct ehea_port *port[EHEA_MAX_PORTS];
383 	struct ehea_eq *neq;       /* notification event queue */
384 	struct tasklet_struct neq_tasklet;
385 	struct ehea_mr mr;
386 	u32 pd;                    /* protection domain */
387 	u64 max_mc_mac;            /* max number of multicast mac addresses */
388 	int active_ports;
389 	struct list_head list;
390 };
391 
392 
393 struct ehea_mc_list {
394 	struct list_head list;
395 	u64 macaddr;
396 };
397 
398 /* kdump support */
399 struct ehea_fw_handle_entry {
400 	u64 adh;               /* Adapter Handle */
401 	u64 fwh;               /* Firmware Handle */
402 };
403 
404 struct ehea_fw_handle_array {
405 	struct ehea_fw_handle_entry *arr;
406 	int num_entries;
407 	struct mutex lock;
408 };
409 
410 struct ehea_bcmc_reg_entry {
411 	u64 adh;               /* Adapter Handle */
412 	u32 port_id;           /* Logical Port Id */
413 	u8 reg_type;           /* Registration Type */
414 	u64 macaddr;
415 };
416 
417 struct ehea_bcmc_reg_array {
418 	struct ehea_bcmc_reg_entry *arr;
419 	int num_entries;
420 	spinlock_t lock;
421 };
422 
423 #define EHEA_PORT_UP 1
424 #define EHEA_PORT_DOWN 0
425 #define EHEA_PHY_LINK_UP 1
426 #define EHEA_PHY_LINK_DOWN 0
427 #define EHEA_MAX_PORT_RES 16
428 struct ehea_port {
429 	struct ehea_adapter *adapter;	 /* adapter that owns this port */
430 	struct net_device *netdev;
431 	struct rtnl_link_stats64 stats;
432 	struct ehea_port_res port_res[EHEA_MAX_PORT_RES];
433 	struct platform_device  ofdev; /* Open Firmware Device */
434 	struct ehea_mc_list *mc_list;	 /* Multicast MAC addresses */
435 	struct ehea_eq *qp_eq;
436 	struct work_struct reset_task;
437 	struct delayed_work stats_work;
438 	struct mutex port_lock;
439 	char int_aff_name[EHEA_IRQ_NAME_SIZE];
440 	int allmulti;			 /* Indicates IFF_ALLMULTI state */
441 	int promisc;		 	 /* Indicates IFF_PROMISC state */
442 	int num_mcs;
443 	int resets;
444 	unsigned long flags;
445 	u64 mac_addr;
446 	u32 logical_port_id;
447 	u32 port_speed;
448 	u32 msg_enable;
449 	u32 sig_comp_iv;
450 	u32 state;
451 	u8 phy_link;
452 	u8 full_duplex;
453 	u8 autoneg;
454 	u8 num_def_qps;
455 	wait_queue_head_t swqe_avail_wq;
456 	wait_queue_head_t restart_wq;
457 };
458 
459 struct port_res_cfg {
460 	int max_entries_rcq;
461 	int max_entries_scq;
462 	int max_entries_sq;
463 	int max_entries_rq1;
464 	int max_entries_rq2;
465 	int max_entries_rq3;
466 };
467 
468 enum ehea_flag_bits {
469 	__EHEA_STOP_XFER,
470 	__EHEA_DISABLE_PORT_RESET
471 };
472 
473 void ehea_set_ethtool_ops(struct net_device *netdev);
474 int ehea_sense_port_attr(struct ehea_port *port);
475 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed);
476 
477 #endif	/* __EHEA_H__ */
478