1 /*
2 * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
3 * driver for Linux.
4 *
5 * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36 #ifndef __T4VF_COMMON_H__
37 #define __T4VF_COMMON_H__
38
39 #include "../cxgb4/t4_hw.h"
40 #include "../cxgb4/t4fw_api.h"
41
42 #define CHELSIO_CHIP_CODE(version, revision) (((version) << 4) | (revision))
43 #define CHELSIO_CHIP_VERSION(code) (((code) >> 4) & 0xf)
44 #define CHELSIO_CHIP_RELEASE(code) ((code) & 0xf)
45
46 /* All T4 and later chips have their PCI-E Device IDs encoded as 0xVFPP where:
47 *
48 * V = "4" for T4; "5" for T5, etc. or
49 * = "a" for T4 FPGA; "b" for T4 FPGA, etc.
50 * F = "0" for PF 0..3; "4".."7" for PF4..7; and "8" for VFs
51 * PP = adapter product designation
52 */
53 #define CHELSIO_T4 0x4
54 #define CHELSIO_T5 0x5
55 #define CHELSIO_T6 0x6
56
57 enum chip_type {
58 T4_A1 = CHELSIO_CHIP_CODE(CHELSIO_T4, 1),
59 T4_A2 = CHELSIO_CHIP_CODE(CHELSIO_T4, 2),
60 T4_FIRST_REV = T4_A1,
61 T4_LAST_REV = T4_A2,
62
63 T5_A0 = CHELSIO_CHIP_CODE(CHELSIO_T5, 0),
64 T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
65 T5_FIRST_REV = T5_A0,
66 T5_LAST_REV = T5_A1,
67 };
68
69 /*
70 * The "len16" field of a Firmware Command Structure ...
71 */
72 #define FW_LEN16(fw_struct) FW_CMD_LEN16_V(sizeof(fw_struct) / 16)
73
74 /*
75 * Per-VF statistics.
76 */
77 struct t4vf_port_stats {
78 /*
79 * TX statistics.
80 */
81 u64 tx_bcast_bytes; /* broadcast */
82 u64 tx_bcast_frames;
83 u64 tx_mcast_bytes; /* multicast */
84 u64 tx_mcast_frames;
85 u64 tx_ucast_bytes; /* unicast */
86 u64 tx_ucast_frames;
87 u64 tx_drop_frames; /* TX dropped frames */
88 u64 tx_offload_bytes; /* offload */
89 u64 tx_offload_frames;
90
91 /*
92 * RX statistics.
93 */
94 u64 rx_bcast_bytes; /* broadcast */
95 u64 rx_bcast_frames;
96 u64 rx_mcast_bytes; /* multicast */
97 u64 rx_mcast_frames;
98 u64 rx_ucast_bytes;
99 u64 rx_ucast_frames; /* unicast */
100
101 u64 rx_err_frames; /* RX error frames */
102 };
103
104 /*
105 * Per-"port" (Virtual Interface) link configuration ...
106 */
107 typedef u16 fw_port_cap16_t; /* 16-bit Port Capabilities integral value */
108 typedef u32 fw_port_cap32_t; /* 32-bit Port Capabilities integral value */
109
110 enum fw_caps {
111 FW_CAPS_UNKNOWN = 0, /* 0'ed out initial state */
112 FW_CAPS16 = 1, /* old Firmware: 16-bit Port Capabilities */
113 FW_CAPS32 = 2, /* new Firmware: 32-bit Port Capabilities */
114 };
115
116 enum cc_pause {
117 PAUSE_RX = 1 << 0,
118 PAUSE_TX = 1 << 1,
119 PAUSE_AUTONEG = 1 << 2
120 };
121
122 enum cc_fec {
123 FEC_AUTO = 1 << 0, /* IEEE 802.3 "automatic" */
124 FEC_RS = 1 << 1, /* Reed-Solomon */
125 FEC_BASER_RS = 1 << 2, /* BaseR/Reed-Solomon */
126 };
127
128 struct link_config {
129 fw_port_cap32_t pcaps; /* link capabilities */
130 fw_port_cap32_t acaps; /* advertised capabilities */
131 fw_port_cap32_t lpacaps; /* peer advertised capabilities */
132
133 fw_port_cap32_t speed_caps; /* speed(s) user has requested */
134 u32 speed; /* actual link speed */
135
136 enum cc_pause requested_fc; /* flow control user has requested */
137 enum cc_pause fc; /* actual link flow control */
138 enum cc_pause advertised_fc; /* actual advertised flow control */
139
140 enum cc_fec auto_fec; /* Forward Error Correction: */
141 enum cc_fec requested_fec; /* "automatic" (IEEE 802.3), */
142 enum cc_fec fec; /* requested, and actual in use */
143
144 unsigned char autoneg; /* autonegotiating? */
145
146 unsigned char link_ok; /* link up? */
147 unsigned char link_down_rc; /* link down reason */
148 };
149
150 /* Return true if the Link Configuration supports "High Speeds" (those greater
151 * than 1Gb/s).
152 */
is_x_10g_port(const struct link_config * lc)153 static inline bool is_x_10g_port(const struct link_config *lc)
154 {
155 fw_port_cap32_t speeds, high_speeds;
156
157 speeds = FW_PORT_CAP32_SPEED_V(FW_PORT_CAP32_SPEED_G(lc->pcaps));
158 high_speeds =
159 speeds & ~(FW_PORT_CAP32_SPEED_100M | FW_PORT_CAP32_SPEED_1G);
160
161 return high_speeds != 0;
162 }
163
164 /*
165 * General device parameters ...
166 */
167 struct dev_params {
168 u32 fwrev; /* firmware version */
169 u32 tprev; /* TP Microcode Version */
170 };
171
172 /*
173 * Scatter Gather Engine parameters. These are almost all determined by the
174 * Physical Function Driver. We just need to grab them to see within which
175 * environment we're playing ...
176 */
177 struct sge_params {
178 u32 sge_control; /* padding, boundaries, lengths, etc. */
179 u32 sge_control2; /* T5: more of the same */
180 u32 sge_host_page_size; /* PF0-7 page sizes */
181 u32 sge_egress_queues_per_page; /* PF0-7 egress queues/page */
182 u32 sge_ingress_queues_per_page;/* PF0-7 ingress queues/page */
183 u32 sge_vf_hps; /* host page size for our vf */
184 u32 sge_vf_eq_qpp; /* egress queues/page for our VF */
185 u32 sge_vf_iq_qpp; /* ingress queues/page for our VF */
186 u32 sge_fl_buffer_size[16]; /* free list buffer sizes */
187 u32 sge_ingress_rx_threshold; /* RX counter interrupt threshold[4] */
188 u32 sge_congestion_control; /* congestion thresholds, etc. */
189 u32 sge_timer_value_0_and_1; /* interrupt coalescing timer values */
190 u32 sge_timer_value_2_and_3;
191 u32 sge_timer_value_4_and_5;
192 };
193
194 /*
195 * Vital Product Data parameters.
196 */
197 struct vpd_params {
198 u32 cclk; /* Core Clock (KHz) */
199 };
200
201 /* Stores chip specific parameters */
202 struct arch_specific_params {
203 u32 sge_fl_db;
204 u16 mps_tcam_size;
205 };
206
207 /*
208 * Global Receive Side Scaling (RSS) parameters in host-native format.
209 */
210 struct rss_params {
211 unsigned int mode; /* RSS mode */
212 union {
213 struct {
214 unsigned int synmapen:1; /* SYN Map Enable */
215 unsigned int syn4tupenipv6:1; /* enable hashing 4-tuple IPv6 SYNs */
216 unsigned int syn2tupenipv6:1; /* enable hashing 2-tuple IPv6 SYNs */
217 unsigned int syn4tupenipv4:1; /* enable hashing 4-tuple IPv4 SYNs */
218 unsigned int syn2tupenipv4:1; /* enable hashing 2-tuple IPv4 SYNs */
219 unsigned int ofdmapen:1; /* Offload Map Enable */
220 unsigned int tnlmapen:1; /* Tunnel Map Enable */
221 unsigned int tnlalllookup:1; /* Tunnel All Lookup */
222 unsigned int hashtoeplitz:1; /* use Toeplitz hash */
223 } basicvirtual;
224 } u;
225 };
226
227 /*
228 * Virtual Interface RSS Configuration in host-native format.
229 */
230 union rss_vi_config {
231 struct {
232 u16 defaultq; /* Ingress Queue ID for !tnlalllookup */
233 unsigned int ip6fourtupen:1; /* hash 4-tuple IPv6 ingress packets */
234 unsigned int ip6twotupen:1; /* hash 2-tuple IPv6 ingress packets */
235 unsigned int ip4fourtupen:1; /* hash 4-tuple IPv4 ingress packets */
236 unsigned int ip4twotupen:1; /* hash 2-tuple IPv4 ingress packets */
237 int udpen; /* hash 4-tuple UDP ingress packets */
238 } basicvirtual;
239 };
240
241 /*
242 * Maximum resources provisioned for a PCI VF.
243 */
244 struct vf_resources {
245 unsigned int nvi; /* N virtual interfaces */
246 unsigned int neq; /* N egress Qs */
247 unsigned int nethctrl; /* N egress ETH or CTRL Qs */
248 unsigned int niqflint; /* N ingress Qs/w free list(s) & intr */
249 unsigned int niq; /* N ingress Qs */
250 unsigned int tc; /* PCI-E traffic class */
251 unsigned int pmask; /* port access rights mask */
252 unsigned int nexactf; /* N exact MPS filters */
253 unsigned int r_caps; /* read capabilities */
254 unsigned int wx_caps; /* write/execute capabilities */
255 };
256
257 /*
258 * Per-"adapter" (Virtual Function) parameters.
259 */
260 struct adapter_params {
261 struct dev_params dev; /* general device parameters */
262 struct sge_params sge; /* Scatter Gather Engine */
263 struct vpd_params vpd; /* Vital Product Data */
264 struct rss_params rss; /* Receive Side Scaling */
265 struct vf_resources vfres; /* Virtual Function Resource limits */
266 struct arch_specific_params arch; /* chip specific params */
267 enum chip_type chip; /* chip code */
268 u8 nports; /* # of Ethernet "ports" */
269 u8 fw_caps_support; /* 32-bit Port Capabilities */
270 };
271
272 /* Firmware Mailbox Command/Reply log. All values are in Host-Endian format.
273 * The access and execute times are signed in order to accommodate negative
274 * error returns.
275 */
276 struct mbox_cmd {
277 u64 cmd[MBOX_LEN / 8]; /* a Firmware Mailbox Command/Reply */
278 u64 timestamp; /* OS-dependent timestamp */
279 u32 seqno; /* sequence number */
280 s16 access; /* time (ms) to access mailbox */
281 s16 execute; /* time (ms) to execute */
282 };
283
284 struct mbox_cmd_log {
285 unsigned int size; /* number of entries in the log */
286 unsigned int cursor; /* next position in the log to write */
287 u32 seqno; /* next sequence number */
288 /* variable length mailbox command log starts here */
289 };
290
291 /* Given a pointer to a Firmware Mailbox Command Log and a log entry index,
292 * return a pointer to the specified entry.
293 */
mbox_cmd_log_entry(struct mbox_cmd_log * log,unsigned int entry_idx)294 static inline struct mbox_cmd *mbox_cmd_log_entry(struct mbox_cmd_log *log,
295 unsigned int entry_idx)
296 {
297 return &((struct mbox_cmd *)&(log)[1])[entry_idx];
298 }
299
300 #include "adapter.h"
301
302 #ifndef PCI_VENDOR_ID_CHELSIO
303 # define PCI_VENDOR_ID_CHELSIO 0x1425
304 #endif
305
306 #define for_each_port(adapter, iter) \
307 for (iter = 0; iter < (adapter)->params.nports; iter++)
308
core_ticks_per_usec(const struct adapter * adapter)309 static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
310 {
311 return adapter->params.vpd.cclk / 1000;
312 }
313
us_to_core_ticks(const struct adapter * adapter,unsigned int us)314 static inline unsigned int us_to_core_ticks(const struct adapter *adapter,
315 unsigned int us)
316 {
317 return (us * adapter->params.vpd.cclk) / 1000;
318 }
319
core_ticks_to_us(const struct adapter * adapter,unsigned int ticks)320 static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
321 unsigned int ticks)
322 {
323 return (ticks * 1000) / adapter->params.vpd.cclk;
324 }
325
326 int t4vf_wr_mbox_core(struct adapter *, const void *, int, void *, bool);
327
t4vf_wr_mbox(struct adapter * adapter,const void * cmd,int size,void * rpl)328 static inline int t4vf_wr_mbox(struct adapter *adapter, const void *cmd,
329 int size, void *rpl)
330 {
331 return t4vf_wr_mbox_core(adapter, cmd, size, rpl, true);
332 }
333
t4vf_wr_mbox_ns(struct adapter * adapter,const void * cmd,int size,void * rpl)334 static inline int t4vf_wr_mbox_ns(struct adapter *adapter, const void *cmd,
335 int size, void *rpl)
336 {
337 return t4vf_wr_mbox_core(adapter, cmd, size, rpl, false);
338 }
339
340 #define CHELSIO_PCI_ID_VER(dev_id) ((dev_id) >> 12)
341
is_t4(enum chip_type chip)342 static inline int is_t4(enum chip_type chip)
343 {
344 return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T4;
345 }
346
347 /**
348 * hash_mac_addr - return the hash value of a MAC address
349 * @addr: the 48-bit Ethernet MAC address
350 *
351 * Hashes a MAC address according to the hash function used by hardware
352 * inexact (hash) address matching.
353 */
hash_mac_addr(const u8 * addr)354 static inline int hash_mac_addr(const u8 *addr)
355 {
356 u32 a = ((u32)addr[0] << 16) | ((u32)addr[1] << 8) | addr[2];
357 u32 b = ((u32)addr[3] << 16) | ((u32)addr[4] << 8) | addr[5];
358
359 a ^= b;
360 a ^= (a >> 12);
361 a ^= (a >> 6);
362 return a & 0x3f;
363 }
364
365 int t4vf_wait_dev_ready(struct adapter *);
366 int t4vf_port_init(struct adapter *, int);
367
368 int t4vf_fw_reset(struct adapter *);
369 int t4vf_set_params(struct adapter *, unsigned int, const u32 *, const u32 *);
370
371 int t4vf_fl_pkt_align(struct adapter *adapter);
372 enum t4_bar2_qtype { T4_BAR2_QTYPE_EGRESS, T4_BAR2_QTYPE_INGRESS };
373 int t4vf_bar2_sge_qregs(struct adapter *adapter,
374 unsigned int qid,
375 enum t4_bar2_qtype qtype,
376 u64 *pbar2_qoffset,
377 unsigned int *pbar2_qid);
378
379 unsigned int t4vf_get_pf_from_vf(struct adapter *);
380 int t4vf_get_sge_params(struct adapter *);
381 int t4vf_get_vpd_params(struct adapter *);
382 int t4vf_get_dev_params(struct adapter *);
383 int t4vf_get_rss_glb_config(struct adapter *);
384 int t4vf_get_vfres(struct adapter *);
385
386 int t4vf_read_rss_vi_config(struct adapter *, unsigned int,
387 union rss_vi_config *);
388 int t4vf_write_rss_vi_config(struct adapter *, unsigned int,
389 union rss_vi_config *);
390 int t4vf_config_rss_range(struct adapter *, unsigned int, int, int,
391 const u16 *, int);
392
393 int t4vf_alloc_vi(struct adapter *, int);
394 int t4vf_free_vi(struct adapter *, int);
395 int t4vf_enable_vi(struct adapter *adapter, unsigned int viid, bool rx_en,
396 bool tx_en);
397 int t4vf_enable_pi(struct adapter *adapter, struct port_info *pi, bool rx_en,
398 bool tx_en);
399 int t4vf_identify_port(struct adapter *, unsigned int, unsigned int);
400
401 int t4vf_set_rxmode(struct adapter *, unsigned int, int, int, int, int, int,
402 bool);
403 int t4vf_alloc_mac_filt(struct adapter *, unsigned int, bool, unsigned int,
404 const u8 **, u16 *, u64 *, bool);
405 int t4vf_free_mac_filt(struct adapter *, unsigned int, unsigned int naddr,
406 const u8 **, bool);
407 int t4vf_change_mac(struct adapter *, unsigned int, int, const u8 *, bool);
408 int t4vf_set_addr_hash(struct adapter *, unsigned int, bool, u64, bool);
409 int t4vf_get_port_stats(struct adapter *, int, struct t4vf_port_stats *);
410
411 int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int,
412 unsigned int);
413 int t4vf_eth_eq_free(struct adapter *, unsigned int);
414
415 int t4vf_update_port_info(struct port_info *pi);
416 int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);
417 int t4vf_prep_adapter(struct adapter *);
418 int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int port,
419 unsigned int *naddr, u8 *addr);
420 int t4vf_get_vf_vlan_acl(struct adapter *adapter);
421
422 #endif /* __T4VF_COMMON_H__ */
423