1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2009 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 *******************************************************************************/
29 #include <linux/types.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/netdevice.h>
33 #include <linux/vmalloc.h>
34 #include <linux/string.h>
37 #include <linux/tcp.h>
38 #include <linux/ipv6.h>
39 #ifdef NETIF_F_HW_VLAN_TX
40 #include <linux/if_vlan.h>
45 #include "ixgbe_sriov.h"
47 int ixgbe_set_vf_multicasts(struct ixgbe_adapter
*adapter
,
48 int entries
, u16
*hash_list
, u32 vf
)
50 struct vf_data_storage
*vfinfo
= &adapter
->vfinfo
[vf
];
51 struct ixgbe_hw
*hw
= &adapter
->hw
;
57 /* only so many hash values supported */
58 entries
= min(entries
, IXGBE_MAX_VF_MC_ENTRIES
);
61 * salt away the number of multi cast addresses assigned
62 * to this VF for later use to restore when the PF multi cast
65 vfinfo
->num_vf_mc_hashes
= entries
;
68 * VFs are limited to using the MTA hash table for their multicast
71 for (i
= 0; i
< entries
; i
++) {
72 vfinfo
->vf_mc_hashes
[i
] = hash_list
[i
];;
75 for (i
= 0; i
< vfinfo
->num_vf_mc_hashes
; i
++) {
76 vector_reg
= (vfinfo
->vf_mc_hashes
[i
] >> 5) & 0x7F;
77 vector_bit
= vfinfo
->vf_mc_hashes
[i
] & 0x1F;
78 mta_reg
= IXGBE_READ_REG(hw
, IXGBE_MTA(vector_reg
));
79 mta_reg
|= (1 << vector_bit
);
80 IXGBE_WRITE_REG(hw
, IXGBE_MTA(vector_reg
), mta_reg
);
86 void ixgbe_restore_vf_multicasts(struct ixgbe_adapter
*adapter
)
88 struct ixgbe_hw
*hw
= &adapter
->hw
;
89 struct vf_data_storage
*vfinfo
;
95 for (i
= 0; i
< adapter
->num_vfs
; i
++) {
96 vfinfo
= &adapter
->vfinfo
[i
];
97 for (j
= 0; j
< vfinfo
->num_vf_mc_hashes
; j
++) {
98 hw
->addr_ctrl
.mta_in_use
++;
99 vector_reg
= (vfinfo
->vf_mc_hashes
[j
] >> 5) & 0x7F;
100 vector_bit
= vfinfo
->vf_mc_hashes
[j
] & 0x1F;
101 mta_reg
= IXGBE_READ_REG(hw
, IXGBE_MTA(vector_reg
));
102 mta_reg
|= (1 << vector_bit
);
103 IXGBE_WRITE_REG(hw
, IXGBE_MTA(vector_reg
), mta_reg
);
108 int ixgbe_set_vf_vlan(struct ixgbe_adapter
*adapter
, int add
, int vid
, u32 vf
)
110 return adapter
->hw
.mac
.ops
.set_vfta(&adapter
->hw
, vid
, vf
, (bool)add
);
114 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 inline void ixgbe_vf_reset_event(struct ixgbe_adapter
*adapter
, u32 vf
)
140 struct ixgbe_hw
*hw
= &adapter
->hw
;
142 /* reset offloads to defaults */
143 if (adapter
->vfinfo
[vf
].pf_vlan
) {
144 ixgbe_set_vf_vlan(adapter
, true,
145 adapter
->vfinfo
[vf
].pf_vlan
, vf
);
146 ixgbe_set_vmvir(adapter
,
147 (adapter
->vfinfo
[vf
].pf_vlan
|
148 (adapter
->vfinfo
[vf
].pf_qos
<<
149 VLAN_PRIO_SHIFT
)), vf
);
150 ixgbe_set_vmolr(hw
, vf
, false);
152 ixgbe_set_vmvir(adapter
, 0, vf
);
153 ixgbe_set_vmolr(hw
, vf
, true);
156 /* reset multicast table array for vf */
157 adapter
->vfinfo
[vf
].num_vf_mc_hashes
= 0;
159 /* Flush and reset the mta with the new values */
160 ixgbe_set_rx_mode(adapter
->netdev
);
162 if (adapter
->vfinfo
[vf
].rar
> 0) {
163 adapter
->hw
.mac
.ops
.clear_rar(&adapter
->hw
,
164 adapter
->vfinfo
[vf
].rar
);
165 adapter
->vfinfo
[vf
].rar
= -1;
169 int ixgbe_set_vf_mac(struct ixgbe_adapter
*adapter
,
170 int vf
, unsigned char *mac_addr
)
172 struct ixgbe_hw
*hw
= &adapter
->hw
;
174 adapter
->vfinfo
[vf
].rar
= hw
->mac
.ops
.set_rar(hw
, vf
+ 1, mac_addr
,
176 if (adapter
->vfinfo
[vf
].rar
< 0) {
177 DPRINTK(DRV
, ERR
, "Could not set MAC Filter for VF %d\n", vf
);
181 memcpy(adapter
->vfinfo
[vf
].vf_mac_addresses
, mac_addr
, 6);
186 int ixgbe_vf_configuration(struct pci_dev
*pdev
, unsigned int event_mask
)
188 unsigned char vf_mac_addr
[6];
189 struct net_device
*netdev
= pci_get_drvdata(pdev
);
190 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
191 unsigned int vfn
= (event_mask
& 0x3f);
193 bool enable
= ((event_mask
& 0x10000000U
) != 0);
196 random_ether_addr(vf_mac_addr
);
197 DPRINTK(PROBE
, INFO
, "IOV: VF %d is enabled "
198 "mac %02X:%02X:%02X:%02X:%02X:%02X\n",
200 vf_mac_addr
[0], vf_mac_addr
[1], vf_mac_addr
[2],
201 vf_mac_addr
[3], vf_mac_addr
[4], vf_mac_addr
[5]);
203 * Store away the VF "permananet" MAC address, it will ask
206 memcpy(adapter
->vfinfo
[vfn
].vf_mac_addresses
, vf_mac_addr
, 6);
212 inline void ixgbe_vf_reset_msg(struct ixgbe_adapter
*adapter
, u32 vf
)
214 struct ixgbe_hw
*hw
= &adapter
->hw
;
216 u32 reg_offset
, vf_shift
;
219 reg_offset
= vf
/ 32;
221 /* enable transmit and receive for vf */
222 reg
= IXGBE_READ_REG(hw
, IXGBE_VFTE(reg_offset
));
223 reg
|= (reg
| (1 << vf_shift
));
224 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(reg_offset
), reg
);
226 reg
= IXGBE_READ_REG(hw
, IXGBE_VFRE(reg_offset
));
227 reg
|= (reg
| (1 << vf_shift
));
228 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(reg_offset
), reg
);
230 ixgbe_vf_reset_event(adapter
, vf
);
233 static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter
*adapter
, u32 vf
)
235 u32 mbx_size
= IXGBE_VFMAILBOX_SIZE
;
236 u32 msgbuf
[mbx_size
];
237 struct ixgbe_hw
*hw
= &adapter
->hw
;
243 retval
= ixgbe_read_mbx(hw
, msgbuf
, mbx_size
, vf
);
246 printk(KERN_ERR
"Error receiving message from VF\n");
248 /* this is a message we already processed, do nothing */
249 if (msgbuf
[0] & (IXGBE_VT_MSGTYPE_ACK
| IXGBE_VT_MSGTYPE_NACK
))
253 * until the vf completes a virtual function reset it should not be
254 * allowed to start any configuration.
257 if (msgbuf
[0] == IXGBE_VF_RESET
) {
258 unsigned char *vf_mac
= adapter
->vfinfo
[vf
].vf_mac_addresses
;
259 u8
*addr
= (u8
*)(&msgbuf
[1]);
260 DPRINTK(PROBE
, INFO
, "VF Reset msg received from vf %d\n", vf
);
261 adapter
->vfinfo
[vf
].clear_to_send
= false;
262 ixgbe_vf_reset_msg(adapter
, vf
);
263 adapter
->vfinfo
[vf
].clear_to_send
= true;
265 /* reply to reset with ack and vf mac address */
266 msgbuf
[0] = IXGBE_VF_RESET
| IXGBE_VT_MSGTYPE_ACK
;
267 memcpy(addr
, vf_mac
, IXGBE_ETH_LENGTH_OF_ADDRESS
);
269 * Piggyback the multicast filter type so VF can compute the
272 msgbuf
[3] = hw
->mac
.mc_filter_type
;
273 ixgbe_write_mbx(hw
, msgbuf
, IXGBE_VF_PERMADDR_MSG_LEN
, vf
);
278 if (!adapter
->vfinfo
[vf
].clear_to_send
) {
279 msgbuf
[0] |= IXGBE_VT_MSGTYPE_NACK
;
280 ixgbe_write_mbx(hw
, msgbuf
, 1, vf
);
284 switch ((msgbuf
[0] & 0xFFFF)) {
285 case IXGBE_VF_SET_MAC_ADDR
:
287 u8
*new_mac
= ((u8
*)(&msgbuf
[1]));
288 if (is_valid_ether_addr(new_mac
) &&
289 !adapter
->vfinfo
[vf
].pf_set_mac
)
290 ixgbe_set_vf_mac(adapter
, vf
, new_mac
);
292 ixgbe_set_vf_mac(adapter
,
293 vf
, adapter
->vfinfo
[vf
].vf_mac_addresses
);
296 case IXGBE_VF_SET_MULTICAST
:
297 entries
= (msgbuf
[0] & IXGBE_VT_MSGINFO_MASK
)
298 >> IXGBE_VT_MSGINFO_SHIFT
;
299 hash_list
= (u16
*)&msgbuf
[1];
300 retval
= ixgbe_set_vf_multicasts(adapter
, entries
,
303 case IXGBE_VF_SET_LPE
:
304 WARN_ON((msgbuf
[0] & 0xFFFF) == IXGBE_VF_SET_LPE
);
306 case IXGBE_VF_SET_VLAN
:
307 add
= (msgbuf
[0] & IXGBE_VT_MSGINFO_MASK
)
308 >> IXGBE_VT_MSGINFO_SHIFT
;
309 vid
= (msgbuf
[1] & IXGBE_VLVF_VLANID_MASK
);
310 retval
= ixgbe_set_vf_vlan(adapter
, add
, vid
, vf
);
313 DPRINTK(DRV
, ERR
, "Unhandled Msg %8.8x\n", msgbuf
[0]);
314 retval
= IXGBE_ERR_MBX
;
318 /* notify the VF of the results of what it sent us */
320 msgbuf
[0] |= IXGBE_VT_MSGTYPE_NACK
;
322 msgbuf
[0] |= IXGBE_VT_MSGTYPE_ACK
;
324 msgbuf
[0] |= IXGBE_VT_MSGTYPE_CTS
;
326 ixgbe_write_mbx(hw
, msgbuf
, 1, vf
);
331 static void ixgbe_rcv_ack_from_vf(struct ixgbe_adapter
*adapter
, u32 vf
)
333 struct ixgbe_hw
*hw
= &adapter
->hw
;
334 u32 msg
= IXGBE_VT_MSGTYPE_NACK
;
336 /* if device isn't clear to send it shouldn't be reading either */
337 if (!adapter
->vfinfo
[vf
].clear_to_send
)
338 ixgbe_write_mbx(hw
, &msg
, 1, vf
);
341 void ixgbe_msg_task(struct ixgbe_adapter
*adapter
)
343 struct ixgbe_hw
*hw
= &adapter
->hw
;
346 for (vf
= 0; vf
< adapter
->num_vfs
; vf
++) {
347 /* process any reset requests */
348 if (!ixgbe_check_for_rst(hw
, vf
))
349 ixgbe_vf_reset_event(adapter
, vf
);
351 /* process any messages pending */
352 if (!ixgbe_check_for_msg(hw
, vf
))
353 ixgbe_rcv_msg_from_vf(adapter
, vf
);
355 /* process any acks */
356 if (!ixgbe_check_for_ack(hw
, vf
))
357 ixgbe_rcv_ack_from_vf(adapter
, vf
);
361 void ixgbe_disable_tx_rx(struct ixgbe_adapter
*adapter
)
363 struct ixgbe_hw
*hw
= &adapter
->hw
;
365 /* disable transmit and receive for all vfs */
366 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(0), 0);
367 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(1), 0);
369 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(0), 0);
370 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(1), 0);
373 void ixgbe_ping_all_vfs(struct ixgbe_adapter
*adapter
)
375 struct ixgbe_hw
*hw
= &adapter
->hw
;
379 for (i
= 0 ; i
< adapter
->num_vfs
; i
++) {
380 ping
= IXGBE_PF_CONTROL_MSG
;
381 if (adapter
->vfinfo
[i
].clear_to_send
)
382 ping
|= IXGBE_VT_MSGTYPE_CTS
;
383 ixgbe_write_mbx(hw
, &ping
, 1, i
);
387 int ixgbe_ndo_set_vf_mac(struct net_device
*netdev
, int vf
, u8
*mac
)
389 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
390 if (!is_valid_ether_addr(mac
) || (vf
>= adapter
->num_vfs
))
392 adapter
->vfinfo
[vf
].pf_set_mac
= true;
393 dev_info(&adapter
->pdev
->dev
, "setting MAC %pM on VF %d\n", mac
, vf
);
394 dev_info(&adapter
->pdev
->dev
, "Reload the VF driver to make this"
395 " change effective.");
396 if (test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
397 dev_warn(&adapter
->pdev
->dev
, "The VF MAC address has been set,"
398 " but the PF device is not up.\n");
399 dev_warn(&adapter
->pdev
->dev
, "Bring the PF device up before"
400 " attempting to use the VF device.\n");
402 return ixgbe_set_vf_mac(adapter
, vf
, mac
);
405 int ixgbe_ndo_set_vf_vlan(struct net_device
*netdev
, int vf
, u16 vlan
, u8 qos
)
408 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
410 if ((vf
>= adapter
->num_vfs
) || (vlan
> 4095) || (qos
> 7))
413 err
= ixgbe_set_vf_vlan(adapter
, true, vlan
, vf
);
416 ixgbe_set_vmvir(adapter
, vlan
| (qos
<< VLAN_PRIO_SHIFT
), vf
);
417 ixgbe_set_vmolr(&adapter
->hw
, vf
, false);
418 adapter
->vfinfo
[vf
].pf_vlan
= vlan
;
419 adapter
->vfinfo
[vf
].pf_qos
= qos
;
420 dev_info(&adapter
->pdev
->dev
,
421 "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan
, qos
, vf
);
422 if (test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
423 dev_warn(&adapter
->pdev
->dev
,
424 "The VF VLAN has been set,"
425 " but the PF device is not up.\n");
426 dev_warn(&adapter
->pdev
->dev
,
427 "Bring the PF device up before"
428 " attempting to use the VF device.\n");
431 err
= ixgbe_set_vf_vlan(adapter
, false,
432 adapter
->vfinfo
[vf
].pf_vlan
, vf
);
433 ixgbe_set_vmvir(adapter
, vlan
, vf
);
434 ixgbe_set_vmolr(&adapter
->hw
, vf
, true);
435 adapter
->vfinfo
[vf
].pf_vlan
= 0;
436 adapter
->vfinfo
[vf
].pf_qos
= 0;
442 int ixgbe_ndo_set_vf_bw(struct net_device
*netdev
, int vf
, int tx_rate
)
447 int ixgbe_ndo_get_vf_config(struct net_device
*netdev
,
448 int vf
, struct ifla_vf_info
*ivi
)
450 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
451 if (vf
>= adapter
->num_vfs
)
454 memcpy(&ivi
->mac
, adapter
->vfinfo
[vf
].vf_mac_addresses
, ETH_ALEN
);
456 ivi
->vlan
= adapter
->vfinfo
[vf
].pf_vlan
;
457 ivi
->qos
= adapter
->vfinfo
[vf
].pf_qos
;