1 /*******************************************************************************
3 * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
4 * Copyright(c) 2013 - 2014 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
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 ******************************************************************************/
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/aer.h>
33 #include <linux/netdevice.h>
34 #include <linux/vmalloc.h>
35 #include <linux/interrupt.h>
36 #include <linux/ethtool.h>
37 #include <linux/if_vlan.h>
39 #include <linux/tcp.h>
40 #include <linux/sctp.h>
41 #include <linux/ipv6.h>
42 #include <net/ip6_checksum.h>
45 #include "i40e_type.h"
46 #include "i40e_virtchnl.h"
47 #include "i40e_txrx.h"
49 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
50 #define PFX "i40evf: "
51 #define DPRINTK(nlevel, klevel, fmt, args...) \
52 ((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
53 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
56 /* dummy struct to make common code less painful */
58 struct i40evf_adapter *back;
59 struct net_device *netdev;
60 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
66 /* high bit set means dynamic, use accessor routines to read/write.
67 * hardware only supports 2us resolution for the ITR registers.
68 * these values always store the USER setting, and must be converted
69 * before programming to a register.
75 /* How many Rx Buffers do we bundle into one write to the hardware ? */
76 #define I40EVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
77 #define I40EVF_DEFAULT_TXD 512
78 #define I40EVF_DEFAULT_RXD 512
79 #define I40EVF_MAX_TXD 4096
80 #define I40EVF_MIN_TXD 64
81 #define I40EVF_MAX_RXD 4096
82 #define I40EVF_MIN_RXD 64
83 #define I40EVF_REQ_DESCRIPTOR_MULTIPLE 32
85 /* Supported Rx Buffer Sizes */
86 #define I40EVF_RXBUFFER_64 64 /* Used for packet split */
87 #define I40EVF_RXBUFFER_128 128 /* Used for packet split */
88 #define I40EVF_RXBUFFER_256 256 /* Used for packet split */
89 #define I40EVF_RXBUFFER_2048 2048
90 #define I40EVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */
91 #define I40EVF_MAX_AQ_BUF_SIZE 4096
92 #define I40EVF_AQ_LEN 32
93 #define I40EVF_AQ_MAX_ERR 10 /* times to try before resetting AQ */
95 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
97 #define I40E_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
98 #define I40E_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i]))
99 #define I40E_TX_CTXTDESC(R, i) \
100 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
101 #define MAX_RX_QUEUES 8
102 #define MAX_TX_QUEUES MAX_RX_QUEUES
104 #define I40EVF_HKEY_ARRAY_SIZE ((I40E_VFQF_HKEY_MAX_INDEX + 1) * 4)
106 /* MAX_MSIX_Q_VECTORS of these are allocated,
107 * but we only use one per queue-specific vector.
109 struct i40e_q_vector {
110 struct i40evf_adapter *adapter;
111 struct i40e_vsi *vsi;
112 struct napi_struct napi;
113 unsigned long reg_idx;
114 struct i40e_ring_container rx;
115 struct i40e_ring_container tx;
117 u8 num_ringpairs; /* total number of ring pairs in vector */
118 int v_idx; /* vector index in list */
119 char name[IFNAMSIZ + 9];
121 cpumask_var_t affinity_mask;
124 /* Helper macros to switch between ints/sec and what the register uses.
125 * And yes, it's the same math going both ways. The lowest value
126 * supported by all of the i40e hardware is 8.
128 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
129 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
130 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
132 #define I40EVF_DESC_UNUSED(R) \
133 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
134 (R)->next_to_clean - (R)->next_to_use - 1)
136 #define I40EVF_RX_DESC_ADV(R, i) \
137 (&(((union i40e_adv_rx_desc *)((R).desc))[i]))
138 #define I40EVF_TX_DESC_ADV(R, i) \
139 (&(((union i40e_adv_tx_desc *)((R).desc))[i]))
140 #define I40EVF_TX_CTXTDESC_ADV(R, i) \
141 (&(((struct i40e_adv_tx_context_desc *)((R).desc))[i]))
143 #define OTHER_VECTOR 1
144 #define NONQ_VECS (OTHER_VECTOR)
146 #define MAX_MSIX_Q_VECTORS 4
147 #define MAX_MSIX_COUNT 5
149 #define MIN_MSIX_Q_VECTORS 1
150 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
152 #define I40EVF_QUEUE_END_OF_LIST 0x7FF
153 #define I40EVF_FREE_VECTOR 0x7FFF
154 struct i40evf_mac_filter {
155 struct list_head list;
156 u8 macaddr[ETH_ALEN];
157 bool remove; /* filter needs to be removed */
158 bool add; /* filter needs to be added */
161 struct i40evf_vlan_filter {
162 struct list_head list;
164 bool remove; /* filter needs to be removed */
165 bool add; /* filter needs to be added */
168 /* Driver state. The order of these is important! */
169 enum i40evf_state_t {
170 __I40EVF_STARTUP, /* driver loaded, probe complete */
171 __I40EVF_REMOVE, /* driver is being unloaded */
172 __I40EVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */
173 __I40EVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */
174 __I40EVF_INIT_SW, /* got resources, setting up structs */
175 __I40EVF_RESETTING, /* in reset */
176 /* Below here, watchdog is running */
177 __I40EVF_DOWN, /* ready, can be opened */
178 __I40EVF_TESTING, /* in ethtool self-test */
179 __I40EVF_RUNNING, /* opened, working */
182 enum i40evf_critical_section_t {
183 __I40EVF_IN_CRITICAL_TASK, /* cannot be interrupted */
185 /* make common code happy */
186 #define __I40E_DOWN __I40EVF_DOWN
188 /* board specific private data structure */
189 struct i40evf_adapter {
190 struct timer_list watchdog_timer;
191 struct work_struct reset_task;
192 struct work_struct adminq_task;
193 struct delayed_work init_task;
194 struct i40e_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
195 struct list_head vlan_filter_list;
196 char misc_vector_name[IFNAMSIZ + 9];
197 int num_active_queues;
200 struct i40e_ring *tx_rings[I40E_MAX_VSI_QP];
201 u32 tx_timeout_count;
202 struct list_head mac_filter_list;
206 struct i40e_ring *rx_rings[I40E_MAX_VSI_QP];
207 u64 hw_csum_rx_error;
209 int num_msix_vectors;
210 struct msix_entry *msix_entries;
213 #define I40EVF_FLAG_RX_CSUM_ENABLED BIT(0)
214 #define I40EVF_FLAG_RX_1BUF_CAPABLE BIT(1)
215 #define I40EVF_FLAG_RX_PS_CAPABLE BIT(2)
216 #define I40EVF_FLAG_RX_PS_ENABLED BIT(3)
217 #define I40EVF_FLAG_IN_NETPOLL BIT(4)
218 #define I40EVF_FLAG_IMIR_ENABLED BIT(5)
219 #define I40EVF_FLAG_MQ_CAPABLE BIT(6)
220 #define I40EVF_FLAG_NEED_LINK_UPDATE BIT(7)
221 #define I40EVF_FLAG_PF_COMMS_FAILED BIT(8)
222 #define I40EVF_FLAG_RESET_PENDING BIT(9)
223 #define I40EVF_FLAG_RESET_NEEDED BIT(10)
224 #define I40EVF_FLAG_WB_ON_ITR_CAPABLE BIT(11)
225 #define I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE BIT(12)
226 /* duplicates for common code */
227 #define I40E_FLAG_FDIR_ATR_ENABLED 0
228 #define I40E_FLAG_DCB_ENABLED 0
229 #define I40E_FLAG_IN_NETPOLL I40EVF_FLAG_IN_NETPOLL
230 #define I40E_FLAG_RX_CSUM_ENABLED I40EVF_FLAG_RX_CSUM_ENABLED
231 #define I40E_FLAG_WB_ON_ITR_CAPABLE I40EVF_FLAG_WB_ON_ITR_CAPABLE
232 #define I40E_FLAG_OUTER_UDP_CSUM_CAPABLE I40EVF_FLAG_OUTER_UDP_CSUM_CAPABLE
233 /* flags for admin queue service task */
235 #define I40EVF_FLAG_AQ_ENABLE_QUEUES BIT(0)
236 #define I40EVF_FLAG_AQ_DISABLE_QUEUES BIT(1)
237 #define I40EVF_FLAG_AQ_ADD_MAC_FILTER BIT(2)
238 #define I40EVF_FLAG_AQ_ADD_VLAN_FILTER BIT(3)
239 #define I40EVF_FLAG_AQ_DEL_MAC_FILTER BIT(4)
240 #define I40EVF_FLAG_AQ_DEL_VLAN_FILTER BIT(5)
241 #define I40EVF_FLAG_AQ_CONFIGURE_QUEUES BIT(6)
242 #define I40EVF_FLAG_AQ_MAP_VECTORS BIT(7)
243 #define I40EVF_FLAG_AQ_HANDLE_RESET BIT(8)
244 #define I40EVF_FLAG_AQ_CONFIGURE_RSS BIT(9)
245 #define I40EVF_FLAG_AQ_GET_CONFIG BIT(10)
247 /* OS defined structs */
248 struct net_device *netdev;
249 struct pci_dev *pdev;
250 struct net_device_stats net_stats;
252 struct i40e_hw hw; /* defined in i40e_type.h */
254 enum i40evf_state_t state;
255 unsigned long crit_section;
257 struct work_struct watchdog_task;
258 bool netdev_registered;
260 enum i40e_virtchnl_ops current_op;
261 #define CLIENT_ENABLED(_a) ((_a)->vf_res->vf_offload_flags & \
262 I40E_VIRTCHNL_VF_OFFLOAD_IWARP)
263 #define RSS_AQ(_a) ((_a)->vf_res->vf_offload_flags & \
264 I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ)
265 #define VLAN_ALLOWED(_a) ((_a)->vf_res->vf_offload_flags & \
266 I40E_VIRTCHNL_VF_OFFLOAD_VLAN)
267 struct i40e_virtchnl_vf_resource *vf_res; /* incl. all VSIs */
268 struct i40e_virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
269 struct i40e_virtchnl_version_info pf_version;
270 #define PF_IS_V11(_a) (((_a)->pf_version.major == 1) && \
271 ((_a)->pf_version.minor == 1))
273 struct i40e_eth_stats current_stats;
279 /* needed by i40evf_ethtool.c */
280 extern char i40evf_driver_name[];
281 extern const char i40evf_driver_version[];
283 int i40evf_up(struct i40evf_adapter *adapter);
284 void i40evf_down(struct i40evf_adapter *adapter);
285 int i40evf_process_config(struct i40evf_adapter *adapter);
286 void i40evf_reset(struct i40evf_adapter *adapter);
287 void i40evf_set_ethtool_ops(struct net_device *netdev);
288 void i40evf_update_stats(struct i40evf_adapter *adapter);
289 void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter);
290 int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter);
291 void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask);
292 void i40evf_free_all_tx_resources(struct i40evf_adapter *adapter);
293 void i40evf_free_all_rx_resources(struct i40evf_adapter *adapter);
295 void i40e_napi_add_all(struct i40evf_adapter *adapter);
296 void i40e_napi_del_all(struct i40evf_adapter *adapter);
298 int i40evf_send_api_ver(struct i40evf_adapter *adapter);
299 int i40evf_verify_api_ver(struct i40evf_adapter *adapter);
300 int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter);
301 int i40evf_get_vf_config(struct i40evf_adapter *adapter);
302 void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush);
303 void i40evf_configure_queues(struct i40evf_adapter *adapter);
304 void i40evf_deconfigure_queues(struct i40evf_adapter *adapter);
305 void i40evf_enable_queues(struct i40evf_adapter *adapter);
306 void i40evf_disable_queues(struct i40evf_adapter *adapter);
307 void i40evf_map_queues(struct i40evf_adapter *adapter);
308 void i40evf_add_ether_addrs(struct i40evf_adapter *adapter);
309 void i40evf_del_ether_addrs(struct i40evf_adapter *adapter);
310 void i40evf_add_vlans(struct i40evf_adapter *adapter);
311 void i40evf_del_vlans(struct i40evf_adapter *adapter);
312 void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags);
313 void i40evf_request_stats(struct i40evf_adapter *adapter);
314 void i40evf_request_reset(struct i40evf_adapter *adapter);
315 void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
316 enum i40e_virtchnl_ops v_opcode,
317 i40e_status v_retval, u8 *msg, u16 msglen);
318 #endif /* _I40EVF_H_ */