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vnic_devcmd.h
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1 /*
2  * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
3  * Copyright 2007 Nuova Systems, Inc. All rights reserved.
4  *
5  * This program is free software; you may redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; version 2 of the License.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
10  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
11  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
12  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
13  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
14  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
15  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
16  * SOFTWARE.
17  *
18  */
19 
20 #ifndef _VNIC_DEVCMD_H_
21 #define _VNIC_DEVCMD_H_
22 
23 #define _CMD_NBITS 14
24 #define _CMD_VTYPEBITS 10
25 #define _CMD_FLAGSBITS 6
26 #define _CMD_DIRBITS 2
27 
28 #define _CMD_NMASK ((1 << _CMD_NBITS)-1)
29 #define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1)
30 #define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1)
31 #define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1)
32 
33 #define _CMD_NSHIFT 0
34 #define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
35 #define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
36 #define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)
37 
38 /*
39  * Direction bits (from host perspective).
40  */
41 #define _CMD_DIR_NONE 0U
42 #define _CMD_DIR_WRITE 1U
43 #define _CMD_DIR_READ 2U
44 #define _CMD_DIR_RW (_CMD_DIR_WRITE | _CMD_DIR_READ)
45 
46 /*
47  * Flag bits.
48  */
49 #define _CMD_FLAGS_NONE 0U
50 #define _CMD_FLAGS_NOWAIT 1U
51 
52 /*
53  * vNIC type bits.
54  */
55 #define _CMD_VTYPE_NONE 0U
56 #define _CMD_VTYPE_ENET 1U
57 #define _CMD_VTYPE_FC 2U
58 #define _CMD_VTYPE_SCSI 4U
59 #define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI)
60 
61 /*
62  * Used to create cmds..
63 */
64 #define _CMDCF(dir, flags, vtype, nr) \
65  (((dir) << _CMD_DIRSHIFT) | \
66  ((flags) << _CMD_FLAGSSHIFT) | \
67  ((vtype) << _CMD_VTYPESHIFT) | \
68  ((nr) << _CMD_NSHIFT))
69 #define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr)
70 #define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)
71 
72 /*
73  * Used to decode cmds..
74 */
75 #define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
76 #define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
77 #define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
78 #define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)
79 
82 
83  /*
84  * mcpu fw info in mem:
85  * in:
86  * (u64)a0=paddr to struct vnic_devcmd_fw_info
87  * action:
88  * Fills in struct vnic_devcmd_fw_info (128 bytes)
89  * note:
90  * An old definition of CMD_MCPU_FW_INFO
91  */
93 
94  /*
95  * mcpu fw info in mem:
96  * in:
97  * (u64)a0=paddr to struct vnic_devcmd_fw_info
98  * (u16)a1=size of the structure
99  * out:
100  * (u16)a1=0 for in:a1 = 0,
101  * data size actually written for other values.
102  * action:
103  * Fills in first 128 bytes of vnic_devcmd_fw_info for in:a1 = 0,
104  * first in:a1 bytes for 0 < in:a1 <= 132,
105  * 132 bytes for other values of in:a1.
106  * note:
107  * CMD_MCPU_FW_INFO and CMD_MCPU_FW_INFO_OLD have the same enum 1
108  * for source compatibility.
109  */
111 
112  /* dev-specific block member:
113  * in: (u16)a0=offset,(u8)a1=size
114  * out: a0=value */
116 
117  /* stats clear */
119 
120  /* stats dump in mem: (u64)a0=paddr to stats area,
121  * (u16)a1=sizeof stats area */
123 
124  /* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */
126 
127  /* set Rx packet filter for all: (u32)a0=filters (see CMD_PFILTER_*) */
129 
130  /* hang detection notification */
132 
133  /* MAC address in (u48)a0 */
136 
137  /* add addr from (u48)a0 */
140 
141  /* del addr from (u48)a0 */
144 
145  /* add VLAN id in (u16)a0 */
147 
148  /* del VLAN id in (u16)a0 */
150 
151  /* nic_cfg in (u32)a0 */
153 
154  /* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */
156 
157  /* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */
159 
160  /* initiate softreset */
162 
163  /* softreset status:
164  * out: a0=0 reset complete, a0=1 reset in progress */
166 
167  /* set struct vnic_devcmd_notify buffer in mem:
168  * in:
169  * (u64)a0=paddr to notify (set paddr=0 to unset)
170  * (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
171  * (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
172  * out:
173  * (u32)a1 = effective size
174  */
176 
177  /* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct,
178  * (u8)a1=PXENV_UNDI_xxx */
180 
181  /* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */
183 
184  /* open status:
185  * out: a0=0 open complete, a0=1 open in progress */
187 
188  /* close vnic */
190 
191  /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
192 /***** Replaced by CMD_INIT *****/
194 
195  /* variant of CMD_INIT, with provisioning info
196  * (u64)a0=paddr of vnic_devcmd_provinfo
197  * (u32)a1=sizeof provision info */
199 
200  /* enable virtual link */
202 
203  /* enable virtual link, waiting variant. */
205 
206  /* disable virtual link */
208 
209  /* stats dump sum of all vnic stats on same uplink in mem:
210  * (u64)a0=paddr
211  * (u16)a1=sizeof stats area */
213 
214  /* init status:
215  * out: a0=0 init complete, a0=1 init in progress
216  * if a0=0, a1=errno */
218 
219  /* INT13 API: (u64)a0=paddr to vnic_int13_params struct
220  * (u32)a1=INT13_CMD_xxx */
222 
223  /* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */
225 
226  /* undo initialize of virtual link */
228 
229  /* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
231 
232  /* check fw capability of a cmd:
233  * in: (u32)a0=cmd
234  * out: (u32)a0=errno, 0:valid cmd, a1=supported VNIC_STF_* bits */
236 
237  /* persistent binding info
238  * in: (u64)a0=paddr of arg
239  * (u32)a1=CMD_PERBI_XXX */
241 
242  /* Interrupt Assert Register functionality
243  * in: (u16)a0=interrupt number to assert
244  */
246 
247  /* initiate hangreset, like softreset after hang detected */
249 
250  /* hangreset status:
251  * out: a0=0 reset complete, a0=1 reset in progress */
253 
254  /*
255  * Set hw ingress packet vlan rewrite mode:
256  * in: (u32)a0=new vlan rewrite mode
257  * out: (u32)a0=old vlan rewrite mode */
259 
260  /*
261  * in: (u16)a0=bdf of target vnic
262  * (u32)a1=cmd to proxy
263  * a2-a15=args to cmd in a1
264  * out: (u32)a0=status of proxied cmd
265  * a1-a15=out args of proxied cmd */
267 
268  /*
269  * As for BY_BDF except a0 is index of hvnlink subordinate vnic
270  * or SR-IOV virtual vnic
271  */
273 
274  /*
275  * For HPP toggle:
276  * adapter-info-get
277  * in: (u64)a0=phsical address of buffer passed in from caller.
278  * (u16)a1=size of buffer specified in a0.
279  * out: (u64)a0=phsical address of buffer passed in from caller.
280  * (u16)a1=actual bytes from VIF-CONFIG-INFO TLV, or
281  * 0 if no VIF-CONFIG-INFO TLV was ever received. */
283 
284  /* init_prov_info2:
285  * Variant of CMD_INIT_PROV_INFO, where it will not try to enable
286  * the vnic until CMD_ENABLE2 is issued.
287  * (u64)a0=paddr of vnic_devcmd_provinfo
288  * (u32)a1=sizeof provision info */
290 
291  /* enable2:
292  * (u32)a0=0 ==> standby
293  * =CMD_ENABLE2_ACTIVE ==> active
294  */
296 
297  /*
298  * cmd_status:
299  * Returns the status of the specified command
300  * Input:
301  * a0 = command for which status is being queried.
302  * Possible values are:
303  * CMD_SOFT_RESET
304  * CMD_HANG_RESET
305  * CMD_OPEN
306  * CMD_INIT
307  * CMD_INIT_PROV_INFO
308  * CMD_DEINIT
309  * CMD_INIT_PROV_INFO2
310  * CMD_ENABLE2
311  * Output:
312  * if status == STAT_ERROR
313  * a0 = ERR_ENOTSUPPORTED - status for command in a0 is
314  * not supported
315  * if status == STAT_NONE
316  * a0 = status of the devcmd specified in a0 as follows.
317  * ERR_SUCCESS - command in a0 completed successfully
318  * ERR_EINPROGRESS - command in a0 is still in progress
319  */
321 
322  /*
323  * Returns interrupt coalescing timer conversion factors.
324  * After calling this devcmd, ENIC driver can convert
325  * interrupt coalescing timer in usec into CPU cycles as follows:
326  *
327  * intr_timer_cycles = intr_timer_usec * multiplier / divisor
328  *
329  * Interrupt coalescing timer in usecs can be obtained from
330  * CPU cycles as follows:
331  *
332  * intr_timer_usec = intr_timer_cycles * divisor / multiplier
333  *
334  * in: none
335  * out: (u32)a0 = multiplier
336  * (u32)a1 = divisor
337  * (u32)a2 = maximum timer value in usec
338  */
340 
341  /*
342  * cmd_set_mac_addr
343  * set mac address
344  * in:
345  * (u48)a0 = mac addr
346  *
347  */
349 };
350 
351 /* CMD_ENABLE2 flags */
352 #define CMD_ENABLE2_ACTIVE 0x1
353 
354 /* flags for CMD_OPEN */
355 #define CMD_OPENF_OPROM 0x1 /* open coming from option rom */
356 
357 /* flags for CMD_INIT */
358 #define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */
359 
360 /* flags for CMD_PACKET_FILTER */
361 #define CMD_PFILTER_DIRECTED 0x01
362 #define CMD_PFILTER_MULTICAST 0x02
363 #define CMD_PFILTER_BROADCAST 0x04
364 #define CMD_PFILTER_PROMISCUOUS 0x08
365 #define CMD_PFILTER_ALL_MULTICAST 0x10
366 
367 /* rewrite modes for CMD_IG_VLAN_REWRITE_MODE */
368 #define IG_VLAN_REWRITE_MODE_DEFAULT_TRUNK 0
369 #define IG_VLAN_REWRITE_MODE_UNTAG_DEFAULT_VLAN 1
370 #define IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN 2
371 #define IG_VLAN_REWRITE_MODE_PASS_THRU 3
372 
375  STAT_BUSY = 1 << 0, /* cmd in progress */
376  STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */
377 };
378 
393 };
394 
395 /*
396  * note: hw_version and asic_rev refer to the same thing,
397  * but have different formats. hw_version is
398  * a 32-byte string (e.g. "A2") and asic_rev is
399  * a 16-bit integer (e.g. 0xA2).
400  */
402  char fw_version[32];
403  char fw_build[32];
404  char hw_version[32];
408 };
409 
411  u32 csum; /* checksum over following words */
412 
413  u32 link_state; /* link up == 1 */
414  u32 port_speed; /* effective port speed (rate limit) */
415  u32 mtu; /* MTU */
416  u32 msglvl; /* requested driver msg lvl */
417  u32 uif; /* uplink interface */
418  u32 status; /* status bits (see VNIC_STF_*) */
419  u32 error; /* error code (see ERR_*) for first ERR */
420  u32 link_down_cnt; /* running count of link down transitions */
421  u32 perbi_rebuild_cnt; /* running count of perbi rebuilds */
422 };
423 #define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */
424 #define VNIC_STF_STD_PAUSE 0x0002 /* standard link-level pause on */
425 #define VNIC_STF_PFC_PAUSE 0x0004 /* priority flow control pause on */
426 /* all supported status flags */
427 #define VNIC_STF_ALL (VNIC_STF_FATAL_ERR |\
428  VNIC_STF_STD_PAUSE |\
429  VNIC_STF_PFC_PAUSE |\
430  0)
431 
433  u8 oui[3];
435  u8 data[0];
436 };
437 
438 /*
439  * Writing cmd register causes STAT_BUSY to get set in status register.
440  * When cmd completes, STAT_BUSY will be cleared.
441  *
442  * If cmd completed successfully STAT_ERROR will be clear
443  * and args registers contain cmd-specific results.
444  *
445  * If cmd error, STAT_ERROR will be set and args[0] contains error code.
446  *
447  * status register is read-only. While STAT_BUSY is set,
448  * all other register contents are read-only.
449  */
450 
451 /* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
452 #define VNIC_DEVCMD_NARGS 15
453 struct vnic_devcmd {
454  u32 status; /* RO */
455  u32 cmd; /* RW */
456  u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */
457 };
458 
459 #endif /* _VNIC_DEVCMD_H_ */