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 #define CHELSIO_CHIP_CODE(version, revision) (((version) << 4) | (revision))
42 #define CHELSIO_CHIP_VERSION(code) (((code) >> 4) & 0xf)
43 #define CHELSIO_CHIP_RELEASE(code) ((code) & 0xf)
44 
45 /* All T4 and later chips have their PCI-E Device IDs encoded as 0xVFPP where:
46  *
47  *   V  = "4" for T4; "5" for T5, etc. or
48  *      = "a" for T4 FPGA; "b" for T4 FPGA, etc.
49  *   F  = "0" for PF 0..3; "4".."7" for PF4..7; and "8" for VFs
50  *   PP = adapter product designation
51  */
52 #define CHELSIO_T4		0x4
53 #define CHELSIO_T5		0x5
54 
55 enum chip_type {
56 	T4_A1 = CHELSIO_CHIP_CODE(CHELSIO_T4, 1),
57 	T4_A2 = CHELSIO_CHIP_CODE(CHELSIO_T4, 2),
58 	T4_FIRST_REV	= T4_A1,
59 	T4_LAST_REV	= T4_A2,
60 
61 	T5_A0 = CHELSIO_CHIP_CODE(CHELSIO_T5, 0),
62 	T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
63 	T5_FIRST_REV	= T5_A0,
64 	T5_LAST_REV	= T5_A1,
65 };
66 
67 /*
68  * The "len16" field of a Firmware Command Structure ...
69  */
70 #define FW_LEN16(fw_struct) FW_CMD_LEN16(sizeof(fw_struct) / 16)
71 
72 /*
73  * Per-VF statistics.
74  */
75 struct t4vf_port_stats {
76 	/*
77 	 * TX statistics.
78 	 */
79 	u64 tx_bcast_bytes;		/* broadcast */
80 	u64 tx_bcast_frames;
81 	u64 tx_mcast_bytes;		/* multicast */
82 	u64 tx_mcast_frames;
83 	u64 tx_ucast_bytes;		/* unicast */
84 	u64 tx_ucast_frames;
85 	u64 tx_drop_frames;		/* TX dropped frames */
86 	u64 tx_offload_bytes;		/* offload */
87 	u64 tx_offload_frames;
88 
89 	/*
90 	 * RX statistics.
91 	 */
92 	u64 rx_bcast_bytes;		/* broadcast */
93 	u64 rx_bcast_frames;
94 	u64 rx_mcast_bytes;		/* multicast */
95 	u64 rx_mcast_frames;
96 	u64 rx_ucast_bytes;
97 	u64 rx_ucast_frames;		/* unicast */
98 
99 	u64 rx_err_frames;		/* RX error frames */
100 };
101 
102 /*
103  * Per-"port" (Virtual Interface) link configuration ...
104  */
105 struct link_config {
106 	unsigned int   supported;        /* link capabilities */
107 	unsigned int   advertising;      /* advertised capabilities */
108 	unsigned short requested_speed;  /* speed user has requested */
109 	unsigned short speed;            /* actual link speed */
110 	unsigned char  requested_fc;     /* flow control user has requested */
111 	unsigned char  fc;               /* actual link flow control */
112 	unsigned char  autoneg;          /* autonegotiating? */
113 	unsigned char  link_ok;          /* link up? */
114 };
115 
116 enum {
117 	PAUSE_RX      = 1 << 0,
118 	PAUSE_TX      = 1 << 1,
119 	PAUSE_AUTONEG = 1 << 2
120 };
121 
122 /*
123  * General device parameters ...
124  */
125 struct dev_params {
126 	u32 fwrev;			/* firmware version */
127 	u32 tprev;			/* TP Microcode Version */
128 };
129 
130 /*
131  * Scatter Gather Engine parameters.  These are almost all determined by the
132  * Physical Function Driver.  We just need to grab them to see within which
133  * environment we're playing ...
134  */
135 struct sge_params {
136 	u32 sge_control;		/* padding, boundaries, lengths, etc. */
137 	u32 sge_host_page_size;		/* RDMA page sizes */
138 	u32 sge_queues_per_page;	/* RDMA queues/page */
139 	u32 sge_user_mode_limits;	/* limits for BAR2 user mode accesses */
140 	u32 sge_fl_buffer_size[16];	/* free list buffer sizes */
141 	u32 sge_ingress_rx_threshold;	/* RX counter interrupt threshold[4] */
142 	u32 sge_timer_value_0_and_1;	/* interrupt coalescing timer values */
143 	u32 sge_timer_value_2_and_3;
144 	u32 sge_timer_value_4_and_5;
145 };
146 
147 /*
148  * Vital Product Data parameters.
149  */
150 struct vpd_params {
151 	u32 cclk;			/* Core Clock (KHz) */
152 };
153 
154 /*
155  * Global Receive Side Scaling (RSS) parameters in host-native format.
156  */
157 struct rss_params {
158 	unsigned int mode;		/* RSS mode */
159 	union {
160 	    struct {
161 		unsigned int synmapen:1;	/* SYN Map Enable */
162 		unsigned int syn4tupenipv6:1;	/* enable hashing 4-tuple IPv6 SYNs */
163 		unsigned int syn2tupenipv6:1;	/* enable hashing 2-tuple IPv6 SYNs */
164 		unsigned int syn4tupenipv4:1;	/* enable hashing 4-tuple IPv4 SYNs */
165 		unsigned int syn2tupenipv4:1;	/* enable hashing 2-tuple IPv4 SYNs */
166 		unsigned int ofdmapen:1;	/* Offload Map Enable */
167 		unsigned int tnlmapen:1;	/* Tunnel Map Enable */
168 		unsigned int tnlalllookup:1;	/* Tunnel All Lookup */
169 		unsigned int hashtoeplitz:1;	/* use Toeplitz hash */
170 	    } basicvirtual;
171 	} u;
172 };
173 
174 /*
175  * Virtual Interface RSS Configuration in host-native format.
176  */
177 union rss_vi_config {
178     struct {
179 	u16 defaultq;			/* Ingress Queue ID for !tnlalllookup */
180 	unsigned int ip6fourtupen:1;	/* hash 4-tuple IPv6 ingress packets */
181 	unsigned int ip6twotupen:1;	/* hash 2-tuple IPv6 ingress packets */
182 	unsigned int ip4fourtupen:1;	/* hash 4-tuple IPv4 ingress packets */
183 	unsigned int ip4twotupen:1;	/* hash 2-tuple IPv4 ingress packets */
184 	int udpen;			/* hash 4-tuple UDP ingress packets */
185     } basicvirtual;
186 };
187 
188 /*
189  * Maximum resources provisioned for a PCI VF.
190  */
191 struct vf_resources {
192 	unsigned int nvi;		/* N virtual interfaces */
193 	unsigned int neq;		/* N egress Qs */
194 	unsigned int nethctrl;		/* N egress ETH or CTRL Qs */
195 	unsigned int niqflint;		/* N ingress Qs/w free list(s) & intr */
196 	unsigned int niq;		/* N ingress Qs */
197 	unsigned int tc;		/* PCI-E traffic class */
198 	unsigned int pmask;		/* port access rights mask */
199 	unsigned int nexactf;		/* N exact MPS filters */
200 	unsigned int r_caps;		/* read capabilities */
201 	unsigned int wx_caps;		/* write/execute capabilities */
202 };
203 
204 /*
205  * Per-"adapter" (Virtual Function) parameters.
206  */
207 struct adapter_params {
208 	struct dev_params dev;		/* general device parameters */
209 	struct sge_params sge;		/* Scatter Gather Engine */
210 	struct vpd_params vpd;		/* Vital Product Data */
211 	struct rss_params rss;		/* Receive Side Scaling */
212 	struct vf_resources vfres;	/* Virtual Function Resource limits */
213 	enum chip_type chip;		/* chip code */
214 	u8 nports;			/* # of Ethernet "ports" */
215 };
216 
217 #include "adapter.h"
218 
219 #ifndef PCI_VENDOR_ID_CHELSIO
220 # define PCI_VENDOR_ID_CHELSIO 0x1425
221 #endif
222 
223 #define for_each_port(adapter, iter) \
224 	for (iter = 0; iter < (adapter)->params.nports; iter++)
225 
226 static inline bool is_10g_port(const struct link_config *lc)
227 {
228 	return (lc->supported & SUPPORTED_10000baseT_Full) != 0;
229 }
230 
231 static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
232 {
233 	return adapter->params.vpd.cclk / 1000;
234 }
235 
236 static inline unsigned int us_to_core_ticks(const struct adapter *adapter,
237 					    unsigned int us)
238 {
239 	return (us * adapter->params.vpd.cclk) / 1000;
240 }
241 
242 static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
243 					    unsigned int ticks)
244 {
245 	return (ticks * 1000) / adapter->params.vpd.cclk;
246 }
247 
248 int t4vf_wr_mbox_core(struct adapter *, const void *, int, void *, bool);
249 
250 static inline int t4vf_wr_mbox(struct adapter *adapter, const void *cmd,
251 			       int size, void *rpl)
252 {
253 	return t4vf_wr_mbox_core(adapter, cmd, size, rpl, true);
254 }
255 
256 static inline int t4vf_wr_mbox_ns(struct adapter *adapter, const void *cmd,
257 				  int size, void *rpl)
258 {
259 	return t4vf_wr_mbox_core(adapter, cmd, size, rpl, false);
260 }
261 
262 static inline int is_t4(enum chip_type chip)
263 {
264 	return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T4;
265 }
266 
267 int t4vf_wait_dev_ready(struct adapter *);
268 int t4vf_port_init(struct adapter *, int);
269 
270 int t4vf_fw_reset(struct adapter *);
271 int t4vf_set_params(struct adapter *, unsigned int, const u32 *, const u32 *);
272 
273 int t4vf_get_sge_params(struct adapter *);
274 int t4vf_get_vpd_params(struct adapter *);
275 int t4vf_get_dev_params(struct adapter *);
276 int t4vf_get_rss_glb_config(struct adapter *);
277 int t4vf_get_vfres(struct adapter *);
278 
279 int t4vf_read_rss_vi_config(struct adapter *, unsigned int,
280 			    union rss_vi_config *);
281 int t4vf_write_rss_vi_config(struct adapter *, unsigned int,
282 			     union rss_vi_config *);
283 int t4vf_config_rss_range(struct adapter *, unsigned int, int, int,
284 			  const u16 *, int);
285 
286 int t4vf_alloc_vi(struct adapter *, int);
287 int t4vf_free_vi(struct adapter *, int);
288 int t4vf_enable_vi(struct adapter *, unsigned int, bool, bool);
289 int t4vf_identify_port(struct adapter *, unsigned int, unsigned int);
290 
291 int t4vf_set_rxmode(struct adapter *, unsigned int, int, int, int, int, int,
292 		    bool);
293 int t4vf_alloc_mac_filt(struct adapter *, unsigned int, bool, unsigned int,
294 			const u8 **, u16 *, u64 *, bool);
295 int t4vf_change_mac(struct adapter *, unsigned int, int, const u8 *, bool);
296 int t4vf_set_addr_hash(struct adapter *, unsigned int, bool, u64, bool);
297 int t4vf_get_port_stats(struct adapter *, int, struct t4vf_port_stats *);
298 
299 int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int,
300 		 unsigned int);
301 int t4vf_eth_eq_free(struct adapter *, unsigned int);
302 
303 int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);
304 
305 #endif /* __T4VF_COMMON_H__ */
306