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t4vf_common.h
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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/t4fw_api.h"
40 
41 /*
42  * The "len16" field of a Firmware Command Structure ...
43  */
44 #define FW_LEN16(fw_struct) FW_CMD_LEN16(sizeof(fw_struct) / 16)
45 
46 /*
47  * Per-VF statistics.
48  */
49 struct t4vf_port_stats {
50  /*
51  * TX statistics.
52  */
53  u64 tx_bcast_bytes; /* broadcast */
54  u64 tx_bcast_frames;
55  u64 tx_mcast_bytes; /* multicast */
56  u64 tx_mcast_frames;
57  u64 tx_ucast_bytes; /* unicast */
58  u64 tx_ucast_frames;
59  u64 tx_drop_frames; /* TX dropped frames */
60  u64 tx_offload_bytes; /* offload */
61  u64 tx_offload_frames;
62 
63  /*
64  * RX statistics.
65  */
66  u64 rx_bcast_bytes; /* broadcast */
67  u64 rx_bcast_frames;
68  u64 rx_mcast_bytes; /* multicast */
69  u64 rx_mcast_frames;
70  u64 rx_ucast_bytes;
71  u64 rx_ucast_frames; /* unicast */
72 
73  u64 rx_err_frames; /* RX error frames */
74 };
75 
76 /*
77  * Per-"port" (Virtual Interface) link configuration ...
78  */
79 struct link_config {
80  unsigned int supported; /* link capabilities */
81  unsigned int advertising; /* advertised capabilities */
82  unsigned short requested_speed; /* speed user has requested */
83  unsigned short speed; /* actual link speed */
84  unsigned char requested_fc; /* flow control user has requested */
85  unsigned char fc; /* actual link flow control */
86  unsigned char autoneg; /* autonegotiating? */
87  unsigned char link_ok; /* link up? */
88 };
89 
90 enum {
91  PAUSE_RX = 1 << 0,
92  PAUSE_TX = 1 << 1,
93  PAUSE_AUTONEG = 1 << 2
94 };
95 
96 /*
97  * General device parameters ...
98  */
99 struct dev_params {
100  u32 fwrev; /* firmware version */
101  u32 tprev; /* TP Microcode Version */
102 };
103 
104 /*
105  * Scatter Gather Engine parameters. These are almost all determined by the
106  * Physical Function Driver. We just need to grab them to see within which
107  * environment we're playing ...
108  */
109 struct sge_params {
110  u32 sge_control; /* padding, boundaries, lengths, etc. */
111  u32 sge_host_page_size; /* RDMA page sizes */
112  u32 sge_queues_per_page; /* RDMA queues/page */
113  u32 sge_user_mode_limits; /* limits for BAR2 user mode accesses */
114  u32 sge_fl_buffer_size[16]; /* free list buffer sizes */
115  u32 sge_ingress_rx_threshold; /* RX counter interrupt threshold[4] */
116  u32 sge_timer_value_0_and_1; /* interrupt coalescing timer values */
117  u32 sge_timer_value_2_and_3;
118  u32 sge_timer_value_4_and_5;
119 };
120 
121 /*
122  * Vital Product Data parameters.
123  */
124 struct vpd_params {
125  u32 cclk; /* Core Clock (KHz) */
126 };
127 
128 /*
129  * Global Receive Side Scaling (RSS) parameters in host-native format.
130  */
131 struct rss_params {
132  unsigned int mode; /* RSS mode */
133  union {
134  struct {
135  unsigned int synmapen:1; /* SYN Map Enable */
136  unsigned int syn4tupenipv6:1; /* enable hashing 4-tuple IPv6 SYNs */
137  unsigned int syn2tupenipv6:1; /* enable hashing 2-tuple IPv6 SYNs */
138  unsigned int syn4tupenipv4:1; /* enable hashing 4-tuple IPv4 SYNs */
139  unsigned int syn2tupenipv4:1; /* enable hashing 2-tuple IPv4 SYNs */
140  unsigned int ofdmapen:1; /* Offload Map Enable */
141  unsigned int tnlmapen:1; /* Tunnel Map Enable */
142  unsigned int tnlalllookup:1; /* Tunnel All Lookup */
143  unsigned int hashtoeplitz:1; /* use Toeplitz hash */
144  } basicvirtual;
145  } u;
146 };
147 
148 /*
149  * Virtual Interface RSS Configuration in host-native format.
150  */
151 union rss_vi_config {
152  struct {
153  u16 defaultq; /* Ingress Queue ID for !tnlalllookup */
154  unsigned int ip6fourtupen:1; /* hash 4-tuple IPv6 ingress packets */
155  unsigned int ip6twotupen:1; /* hash 2-tuple IPv6 ingress packets */
156  unsigned int ip4fourtupen:1; /* hash 4-tuple IPv4 ingress packets */
157  unsigned int ip4twotupen:1; /* hash 2-tuple IPv4 ingress packets */
158  int udpen; /* hash 4-tuple UDP ingress packets */
159  } basicvirtual;
160 };
161 
162 /*
163  * Maximum resources provisioned for a PCI VF.
164  */
165 struct vf_resources {
166  unsigned int nvi; /* N virtual interfaces */
167  unsigned int neq; /* N egress Qs */
168  unsigned int nethctrl; /* N egress ETH or CTRL Qs */
169  unsigned int niqflint; /* N ingress Qs/w free list(s) & intr */
170  unsigned int niq; /* N ingress Qs */
171  unsigned int tc; /* PCI-E traffic class */
172  unsigned int pmask; /* port access rights mask */
173  unsigned int nexactf; /* N exact MPS filters */
174  unsigned int r_caps; /* read capabilities */
175  unsigned int wx_caps; /* write/execute capabilities */
176 };
177 
178 /*
179  * Per-"adapter" (Virtual Function) parameters.
180  */
181 struct adapter_params {
182  struct dev_params dev; /* general device parameters */
183  struct sge_params sge; /* Scatter Gather Engine */
184  struct vpd_params vpd; /* Vital Product Data */
185  struct rss_params rss; /* Receive Side Scaling */
186  struct vf_resources vfres; /* Virtual Function Resource limits */
187  u8 nports; /* # of Ethernet "ports" */
188 };
189 
190 #include "adapter.h"
191 
192 #ifndef PCI_VENDOR_ID_CHELSIO
193 # define PCI_VENDOR_ID_CHELSIO 0x1425
194 #endif
195 
196 #define for_each_port(adapter, iter) \
197  for (iter = 0; iter < (adapter)->params.nports; iter++)
198 
199 static inline bool is_10g_port(const struct link_config *lc)
200 {
201  return (lc->supported & SUPPORTED_10000baseT_Full) != 0;
202 }
203 
204 static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
205 {
206  return adapter->params.vpd.cclk / 1000;
207 }
208 
209 static inline unsigned int us_to_core_ticks(const struct adapter *adapter,
210  unsigned int us)
211 {
212  return (us * adapter->params.vpd.cclk) / 1000;
213 }
214 
215 static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
216  unsigned int ticks)
217 {
218  return (ticks * 1000) / adapter->params.vpd.cclk;
219 }
220 
221 int t4vf_wr_mbox_core(struct adapter *, const void *, int, void *, bool);
222 
223 static inline int t4vf_wr_mbox(struct adapter *adapter, const void *cmd,
224  int size, void *rpl)
225 {
226  return t4vf_wr_mbox_core(adapter, cmd, size, rpl, true);
227 }
228 
229 static inline int t4vf_wr_mbox_ns(struct adapter *adapter, const void *cmd,
230  int size, void *rpl)
231 {
232  return t4vf_wr_mbox_core(adapter, cmd, size, rpl, false);
233 }
234 
235 int __devinit t4vf_wait_dev_ready(struct adapter *);
236 int __devinit t4vf_port_init(struct adapter *, int);
237 
238 int t4vf_fw_reset(struct adapter *);
239 int t4vf_query_params(struct adapter *, unsigned int, const u32 *, u32 *);
240 int t4vf_set_params(struct adapter *, unsigned int, const u32 *, const u32 *);
241 
242 int t4vf_get_sge_params(struct adapter *);
243 int t4vf_get_vpd_params(struct adapter *);
244 int t4vf_get_dev_params(struct adapter *);
245 int t4vf_get_rss_glb_config(struct adapter *);
246 int t4vf_get_vfres(struct adapter *);
247 
248 int t4vf_read_rss_vi_config(struct adapter *, unsigned int,
249  union rss_vi_config *);
250 int t4vf_write_rss_vi_config(struct adapter *, unsigned int,
251  union rss_vi_config *);
252 int t4vf_config_rss_range(struct adapter *, unsigned int, int, int,
253  const u16 *, int);
254 
255 int t4vf_alloc_vi(struct adapter *, int);
256 int t4vf_free_vi(struct adapter *, int);
257 int t4vf_enable_vi(struct adapter *, unsigned int, bool, bool);
258 int t4vf_identify_port(struct adapter *, unsigned int, unsigned int);
259 
260 int t4vf_set_rxmode(struct adapter *, unsigned int, int, int, int, int, int,
261  bool);
262 int t4vf_alloc_mac_filt(struct adapter *, unsigned int, bool, unsigned int,
263  const u8 **, u16 *, u64 *, bool);
264 int t4vf_change_mac(struct adapter *, unsigned int, int, const u8 *, bool);
265 int t4vf_set_addr_hash(struct adapter *, unsigned int, bool, u64, bool);
266 int t4vf_get_port_stats(struct adapter *, int, struct t4vf_port_stats *);
267 
268 int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int,
269  unsigned int);
270 int t4vf_eth_eq_free(struct adapter *, unsigned int);
271 
272 int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);
273 
274 #endif /* __T4VF_COMMON_H__ */
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