1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2010 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #include <linux/types.h>
29 #include <linux/module.h>
30 #include <linux/pci.h>
31 #include <linux/netdevice.h>
32 #include <linux/vmalloc.h>
33 #include <linux/string.h>
36 #include <linux/tcp.h>
37 #include <linux/ipv6.h>
38 #ifdef NETIF_F_HW_VLAN_TX
39 #include <linux/if_vlan.h>
44 #include "ixgbe_sriov.h"
46 static int ixgbe_set_vf_multicasts(struct ixgbe_adapter
*adapter
,
47 int entries
, u16
*hash_list
, u32 vf
)
49 struct vf_data_storage
*vfinfo
= &adapter
->vfinfo
[vf
];
50 struct ixgbe_hw
*hw
= &adapter
->hw
;
56 /* only so many hash values supported */
57 entries
= min(entries
, IXGBE_MAX_VF_MC_ENTRIES
);
60 * salt away the number of multi cast addresses assigned
61 * to this VF for later use to restore when the PF multi cast
64 vfinfo
->num_vf_mc_hashes
= entries
;
67 * VFs are limited to using the MTA hash table for their multicast
70 for (i
= 0; i
< entries
; i
++) {
71 vfinfo
->vf_mc_hashes
[i
] = hash_list
[i
];
74 for (i
= 0; i
< vfinfo
->num_vf_mc_hashes
; i
++) {
75 vector_reg
= (vfinfo
->vf_mc_hashes
[i
] >> 5) & 0x7F;
76 vector_bit
= vfinfo
->vf_mc_hashes
[i
] & 0x1F;
77 mta_reg
= IXGBE_READ_REG(hw
, IXGBE_MTA(vector_reg
));
78 mta_reg
|= (1 << vector_bit
);
79 IXGBE_WRITE_REG(hw
, IXGBE_MTA(vector_reg
), mta_reg
);
85 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter
*adapter
)
87 struct ixgbe_hw
*hw
= &adapter
->hw
;
88 struct vf_data_storage
*vfinfo
;
94 for (i
= 0; i
< adapter
->num_vfs
; i
++) {
95 vfinfo
= &adapter
->vfinfo
[i
];
96 for (j
= 0; j
< vfinfo
->num_vf_mc_hashes
; j
++) {
97 hw
->addr_ctrl
.mta_in_use
++;
98 vector_reg
= (vfinfo
->vf_mc_hashes
[j
] >> 5) & 0x7F;
99 vector_bit
= vfinfo
->vf_mc_hashes
[j
] & 0x1F;
100 mta_reg
= IXGBE_READ_REG(hw
, IXGBE_MTA(vector_reg
));
101 mta_reg
|= (1 << vector_bit
);
102 IXGBE_WRITE_REG(hw
, IXGBE_MTA(vector_reg
), mta_reg
);
107 static int ixgbe_set_vf_vlan(struct ixgbe_adapter
*adapter
, int add
, int vid
,
110 return adapter
->hw
.mac
.ops
.set_vfta(&adapter
->hw
, vid
, vf
, (bool)add
);
114 static void ixgbe_set_vmolr(struct ixgbe_hw
*hw
, u32 vf
, bool aupe
)
116 u32 vmolr
= IXGBE_READ_REG(hw
, IXGBE_VMOLR(vf
));
117 vmolr
|= (IXGBE_VMOLR_ROMPE
|
121 vmolr
|= IXGBE_VMOLR_AUPE
;
123 vmolr
&= ~IXGBE_VMOLR_AUPE
;
124 IXGBE_WRITE_REG(hw
, IXGBE_VMOLR(vf
), vmolr
);
127 static void ixgbe_set_vmvir(struct ixgbe_adapter
*adapter
, u32 vid
, u32 vf
)
129 struct ixgbe_hw
*hw
= &adapter
->hw
;
132 IXGBE_WRITE_REG(hw
, IXGBE_VMVIR(vf
),
133 (vid
| IXGBE_VMVIR_VLANA_DEFAULT
));
135 IXGBE_WRITE_REG(hw
, IXGBE_VMVIR(vf
), 0);
138 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter
*adapter
, u32 vf
)
140 struct ixgbe_hw
*hw
= &adapter
->hw
;
141 int rar_entry
= hw
->mac
.num_rar_entries
- (vf
+ 1);
143 /* reset offloads to defaults */
144 if (adapter
->vfinfo
[vf
].pf_vlan
) {
145 ixgbe_set_vf_vlan(adapter
, true,
146 adapter
->vfinfo
[vf
].pf_vlan
, vf
);
147 ixgbe_set_vmvir(adapter
,
148 (adapter
->vfinfo
[vf
].pf_vlan
|
149 (adapter
->vfinfo
[vf
].pf_qos
<<
150 VLAN_PRIO_SHIFT
)), vf
);
151 ixgbe_set_vmolr(hw
, vf
, false);
153 ixgbe_set_vmvir(adapter
, 0, vf
);
154 ixgbe_set_vmolr(hw
, vf
, true);
157 /* reset multicast table array for vf */
158 adapter
->vfinfo
[vf
].num_vf_mc_hashes
= 0;
160 /* Flush and reset the mta with the new values */
161 ixgbe_set_rx_mode(adapter
->netdev
);
163 hw
->mac
.ops
.clear_rar(hw
, rar_entry
);
166 static int ixgbe_set_vf_mac(struct ixgbe_adapter
*adapter
,
167 int vf
, unsigned char *mac_addr
)
169 struct ixgbe_hw
*hw
= &adapter
->hw
;
170 int rar_entry
= hw
->mac
.num_rar_entries
- (vf
+ 1);
172 memcpy(adapter
->vfinfo
[vf
].vf_mac_addresses
, mac_addr
, 6);
173 hw
->mac
.ops
.set_rar(hw
, rar_entry
, mac_addr
, vf
, IXGBE_RAH_AV
);
178 int ixgbe_vf_configuration(struct pci_dev
*pdev
, unsigned int event_mask
)
180 unsigned char vf_mac_addr
[6];
181 struct net_device
*netdev
= pci_get_drvdata(pdev
);
182 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
183 unsigned int vfn
= (event_mask
& 0x3f);
185 bool enable
= ((event_mask
& 0x10000000U
) != 0);
188 random_ether_addr(vf_mac_addr
);
189 e_info(probe
, "IOV: VF %d is enabled MAC %pM\n",
192 * Store away the VF "permananet" MAC address, it will ask
195 memcpy(adapter
->vfinfo
[vfn
].vf_mac_addresses
, vf_mac_addr
, 6);
201 static inline void ixgbe_vf_reset_msg(struct ixgbe_adapter
*adapter
, u32 vf
)
203 struct ixgbe_hw
*hw
= &adapter
->hw
;
205 u32 reg_offset
, vf_shift
;
208 reg_offset
= vf
/ 32;
210 /* enable transmit and receive for vf */
211 reg
= IXGBE_READ_REG(hw
, IXGBE_VFTE(reg_offset
));
212 reg
|= (reg
| (1 << vf_shift
));
213 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(reg_offset
), reg
);
215 reg
= IXGBE_READ_REG(hw
, IXGBE_VFRE(reg_offset
));
216 reg
|= (reg
| (1 << vf_shift
));
217 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(reg_offset
), reg
);
219 ixgbe_vf_reset_event(adapter
, vf
);
222 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter
*adapter
, u32 vf
)
224 u32 mbx_size
= IXGBE_VFMAILBOX_SIZE
;
225 u32 msgbuf
[mbx_size
];
226 struct ixgbe_hw
*hw
= &adapter
->hw
;
232 retval
= ixgbe_read_mbx(hw
, msgbuf
, mbx_size
, vf
);
235 pr_err("Error receiving message from VF\n");
237 /* this is a message we already processed, do nothing */
238 if (msgbuf
[0] & (IXGBE_VT_MSGTYPE_ACK
| IXGBE_VT_MSGTYPE_NACK
))
242 * until the vf completes a virtual function reset it should not be
243 * allowed to start any configuration.
246 if (msgbuf
[0] == IXGBE_VF_RESET
) {
247 unsigned char *vf_mac
= adapter
->vfinfo
[vf
].vf_mac_addresses
;
248 u8
*addr
= (u8
*)(&msgbuf
[1]);
249 e_info(probe
, "VF Reset msg received from vf %d\n", vf
);
250 adapter
->vfinfo
[vf
].clear_to_send
= false;
251 ixgbe_vf_reset_msg(adapter
, vf
);
252 adapter
->vfinfo
[vf
].clear_to_send
= true;
254 /* reply to reset with ack and vf mac address */
255 msgbuf
[0] = IXGBE_VF_RESET
| IXGBE_VT_MSGTYPE_ACK
;
256 memcpy(addr
, vf_mac
, IXGBE_ETH_LENGTH_OF_ADDRESS
);
258 * Piggyback the multicast filter type so VF can compute the
261 msgbuf
[3] = hw
->mac
.mc_filter_type
;
262 ixgbe_write_mbx(hw
, msgbuf
, IXGBE_VF_PERMADDR_MSG_LEN
, vf
);
267 if (!adapter
->vfinfo
[vf
].clear_to_send
) {
268 msgbuf
[0] |= IXGBE_VT_MSGTYPE_NACK
;
269 ixgbe_write_mbx(hw
, msgbuf
, 1, vf
);
273 switch ((msgbuf
[0] & 0xFFFF)) {
274 case IXGBE_VF_SET_MAC_ADDR
:
276 u8
*new_mac
= ((u8
*)(&msgbuf
[1]));
277 if (is_valid_ether_addr(new_mac
) &&
278 !adapter
->vfinfo
[vf
].pf_set_mac
)
279 ixgbe_set_vf_mac(adapter
, vf
, new_mac
);
281 ixgbe_set_vf_mac(adapter
,
282 vf
, adapter
->vfinfo
[vf
].vf_mac_addresses
);
285 case IXGBE_VF_SET_MULTICAST
:
286 entries
= (msgbuf
[0] & IXGBE_VT_MSGINFO_MASK
)
287 >> IXGBE_VT_MSGINFO_SHIFT
;
288 hash_list
= (u16
*)&msgbuf
[1];
289 retval
= ixgbe_set_vf_multicasts(adapter
, entries
,
292 case IXGBE_VF_SET_LPE
:
293 WARN_ON((msgbuf
[0] & 0xFFFF) == IXGBE_VF_SET_LPE
);
295 case IXGBE_VF_SET_VLAN
:
296 add
= (msgbuf
[0] & IXGBE_VT_MSGINFO_MASK
)
297 >> IXGBE_VT_MSGINFO_SHIFT
;
298 vid
= (msgbuf
[1] & IXGBE_VLVF_VLANID_MASK
);
299 retval
= ixgbe_set_vf_vlan(adapter
, add
, vid
, vf
);
302 e_err(drv
, "Unhandled Msg %8.8x\n", msgbuf
[0]);
303 retval
= IXGBE_ERR_MBX
;
307 /* notify the VF of the results of what it sent us */
309 msgbuf
[0] |= IXGBE_VT_MSGTYPE_NACK
;
311 msgbuf
[0] |= IXGBE_VT_MSGTYPE_ACK
;
313 msgbuf
[0] |= IXGBE_VT_MSGTYPE_CTS
;
315 ixgbe_write_mbx(hw
, msgbuf
, 1, vf
);
320 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter
*adapter
, u32 vf
)
322 struct ixgbe_hw
*hw
= &adapter
->hw
;
323 u32 msg
= IXGBE_VT_MSGTYPE_NACK
;
325 /* if device isn't clear to send it shouldn't be reading either */
326 if (!adapter
->vfinfo
[vf
].clear_to_send
)
327 ixgbe_write_mbx(hw
, &msg
, 1, vf
);
330 void ixgbe_msg_task(struct ixgbe_adapter
*adapter
)
332 struct ixgbe_hw
*hw
= &adapter
->hw
;
335 for (vf
= 0; vf
< adapter
->num_vfs
; vf
++) {
336 /* process any reset requests */
337 if (!ixgbe_check_for_rst(hw
, vf
))
338 ixgbe_vf_reset_event(adapter
, vf
);
340 /* process any messages pending */
341 if (!ixgbe_check_for_msg(hw
, vf
))
342 ixgbe_rcv_msg_from_vf(adapter
, vf
);
344 /* process any acks */
345 if (!ixgbe_check_for_ack(hw
, vf
))
346 ixgbe_rcv_ack_from_vf(adapter
, vf
);
350 void ixgbe_disable_tx_rx(struct ixgbe_adapter
*adapter
)
352 struct ixgbe_hw
*hw
= &adapter
->hw
;
354 /* disable transmit and receive for all vfs */
355 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(0), 0);
356 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(1), 0);
358 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(0), 0);
359 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(1), 0);
362 void ixgbe_ping_all_vfs(struct ixgbe_adapter
*adapter
)
364 struct ixgbe_hw
*hw
= &adapter
->hw
;
368 for (i
= 0 ; i
< adapter
->num_vfs
; i
++) {
369 ping
= IXGBE_PF_CONTROL_MSG
;
370 if (adapter
->vfinfo
[i
].clear_to_send
)
371 ping
|= IXGBE_VT_MSGTYPE_CTS
;
372 ixgbe_write_mbx(hw
, &ping
, 1, i
);
376 int ixgbe_ndo_set_vf_mac(struct net_device
*netdev
, int vf
, u8
*mac
)
378 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
379 if (!is_valid_ether_addr(mac
) || (vf
>= adapter
->num_vfs
))
381 adapter
->vfinfo
[vf
].pf_set_mac
= true;
382 dev_info(&adapter
->pdev
->dev
, "setting MAC %pM on VF %d\n", mac
, vf
);
383 dev_info(&adapter
->pdev
->dev
, "Reload the VF driver to make this"
384 " change effective.");
385 if (test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
386 dev_warn(&adapter
->pdev
->dev
, "The VF MAC address has been set,"
387 " but the PF device is not up.\n");
388 dev_warn(&adapter
->pdev
->dev
, "Bring the PF device up before"
389 " attempting to use the VF device.\n");
391 return ixgbe_set_vf_mac(adapter
, vf
, mac
);
394 int ixgbe_ndo_set_vf_vlan(struct net_device
*netdev
, int vf
, u16 vlan
, u8 qos
)
397 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
399 if ((vf
>= adapter
->num_vfs
) || (vlan
> 4095) || (qos
> 7))
402 err
= ixgbe_set_vf_vlan(adapter
, true, vlan
, vf
);
405 ixgbe_set_vmvir(adapter
, vlan
| (qos
<< VLAN_PRIO_SHIFT
), vf
);
406 ixgbe_set_vmolr(&adapter
->hw
, vf
, false);
407 adapter
->vfinfo
[vf
].pf_vlan
= vlan
;
408 adapter
->vfinfo
[vf
].pf_qos
= qos
;
409 dev_info(&adapter
->pdev
->dev
,
410 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan
, qos
, vf
);
411 if (test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
412 dev_warn(&adapter
->pdev
->dev
,
413 "The VF VLAN has been set,"
414 " but the PF device is not up.\n");
415 dev_warn(&adapter
->pdev
->dev
,
416 "Bring the PF device up before"
417 " attempting to use the VF device.\n");
420 err
= ixgbe_set_vf_vlan(adapter
, false,
421 adapter
->vfinfo
[vf
].pf_vlan
, vf
);
422 ixgbe_set_vmvir(adapter
, vlan
, vf
);
423 ixgbe_set_vmolr(&adapter
->hw
, vf
, true);
424 adapter
->vfinfo
[vf
].pf_vlan
= 0;
425 adapter
->vfinfo
[vf
].pf_qos
= 0;
431 int ixgbe_ndo_set_vf_bw(struct net_device
*netdev
, int vf
, int tx_rate
)
436 int ixgbe_ndo_get_vf_config(struct net_device
*netdev
,
437 int vf
, struct ifla_vf_info
*ivi
)
439 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
440 if (vf
>= adapter
->num_vfs
)
443 memcpy(&ivi
->mac
, adapter
->vfinfo
[vf
].vf_mac_addresses
, ETH_ALEN
);
445 ivi
->vlan
= adapter
->vfinfo
[vf
].pf_vlan
;
446 ivi
->qos
= adapter
->vfinfo
[vf
].pf_qos
;