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 * The full GNU General Public License is included in this distribution in
16 * the file called "COPYING".
18 * Contact Information:
19 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
20 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
22 ******************************************************************************/
27 #include <linux/module.h>
28 #include <linux/pci.h>
29 #include <linux/aer.h>
30 #include <linux/netdevice.h>
31 #include <linux/vmalloc.h>
32 #include <linux/interrupt.h>
33 #include <linux/ethtool.h>
34 #include <linux/if_vlan.h>
36 #include <linux/tcp.h>
37 #include <linux/sctp.h>
38 #include <linux/ipv6.h>
39 #include <net/ip6_checksum.h>
41 #include <linux/sctp.h>
44 #include "i40e_type.h"
45 #include "i40e_virtchnl.h"
46 #include "i40e_txrx.h"
48 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
49 #define PFX "i40evf: "
50 #define DPRINTK(nlevel, klevel, fmt, args...) \
51 ((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
52 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
55 /* dummy struct to make common code less painful */
57 struct i40evf_adapter *back;
58 struct net_device *netdev;
59 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
65 /* high bit set means dynamic, use accessor routines to read/write.
66 * hardware only supports 2us resolution for the ITR registers.
67 * these values always store the USER setting, and must be converted
68 * before programming to a register.
74 /* How many Rx Buffers do we bundle into one write to the hardware ? */
75 #define I40EVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
76 #define I40EVF_DEFAULT_TXD 512
77 #define I40EVF_DEFAULT_RXD 512
78 #define I40EVF_MAX_TXD 4096
79 #define I40EVF_MIN_TXD 64
80 #define I40EVF_MAX_RXD 4096
81 #define I40EVF_MIN_RXD 64
82 #define I40EVF_REQ_DESCRIPTOR_MULTIPLE 8
84 /* Supported Rx Buffer Sizes */
85 #define I40EVF_RXBUFFER_64 64 /* Used for packet split */
86 #define I40EVF_RXBUFFER_128 128 /* Used for packet split */
87 #define I40EVF_RXBUFFER_256 256 /* Used for packet split */
88 #define I40EVF_RXBUFFER_2048 2048
89 #define I40EVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */
90 #define I40EVF_MAX_AQ_BUF_SIZE 4096
91 #define I40EVF_AQ_LEN 32
92 #define I40EVF_AQ_MAX_ERR 10 /* times to try before resetting AQ */
94 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
96 #define I40E_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
97 #define I40E_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i]))
98 #define I40E_TX_CTXTDESC(R, i) \
99 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
100 #define MAX_RX_QUEUES 8
101 #define MAX_TX_QUEUES MAX_RX_QUEUES
103 /* MAX_MSIX_Q_VECTORS of these are allocated,
104 * but we only use one per queue-specific vector.
106 struct i40e_q_vector {
107 struct i40evf_adapter *adapter;
108 struct i40e_vsi *vsi;
109 struct napi_struct napi;
110 unsigned long reg_idx;
111 struct i40e_ring_container rx;
112 struct i40e_ring_container tx;
114 u8 num_ringpairs; /* total number of ring pairs in vector */
115 int v_idx; /* vector index in list */
116 char name[IFNAMSIZ + 9];
117 cpumask_var_t affinity_mask;
120 /* Helper macros to switch between ints/sec and what the register uses.
121 * And yes, it's the same math going both ways. The lowest value
122 * supported by all of the i40e hardware is 8.
124 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
125 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
126 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
128 #define I40EVF_DESC_UNUSED(R) \
129 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
130 (R)->next_to_clean - (R)->next_to_use - 1)
132 #define I40EVF_RX_DESC_ADV(R, i) \
133 (&(((union i40e_adv_rx_desc *)((R).desc))[i]))
134 #define I40EVF_TX_DESC_ADV(R, i) \
135 (&(((union i40e_adv_tx_desc *)((R).desc))[i]))
136 #define I40EVF_TX_CTXTDESC_ADV(R, i) \
137 (&(((struct i40e_adv_tx_context_desc *)((R).desc))[i]))
139 #define OTHER_VECTOR 1
140 #define NONQ_VECS (OTHER_VECTOR)
142 #define MAX_MSIX_Q_VECTORS 4
143 #define MAX_MSIX_COUNT 5
145 #define MIN_MSIX_Q_VECTORS 1
146 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
148 #define I40EVF_QUEUE_END_OF_LIST 0x7FF
149 #define I40EVF_FREE_VECTOR 0x7FFF
150 struct i40evf_mac_filter {
151 struct list_head list;
152 u8 macaddr[ETH_ALEN];
153 bool remove; /* filter needs to be removed */
154 bool add; /* filter needs to be added */
157 struct i40evf_vlan_filter {
158 struct list_head list;
160 bool remove; /* filter needs to be removed */
161 bool add; /* filter needs to be added */
164 /* Driver state. The order of these is important! */
165 enum i40evf_state_t {
166 __I40EVF_STARTUP, /* driver loaded, probe complete */
167 __I40EVF_FAILED, /* PF communication failed. Fatal. */
168 __I40EVF_REMOVE, /* driver is being unloaded */
169 __I40EVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */
170 __I40EVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */
171 __I40EVF_INIT_SW, /* got resources, setting up structs */
172 /* Below here, watchdog is running */
173 __I40EVF_DOWN, /* ready, can be opened */
174 __I40EVF_TESTING, /* in ethtool self-test */
175 __I40EVF_RESETTING, /* in reset */
176 __I40EVF_RUNNING, /* opened, working */
179 enum i40evf_critical_section_t {
180 __I40EVF_IN_CRITICAL_TASK, /* cannot be interrupted */
182 /* make common code happy */
183 #define __I40E_DOWN __I40EVF_DOWN
185 /* board specific private data structure */
186 struct i40evf_adapter {
187 struct timer_list watchdog_timer;
188 struct work_struct reset_task;
189 struct work_struct adminq_task;
190 struct delayed_work init_task;
191 struct i40e_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
192 struct list_head vlan_filter_list;
193 char misc_vector_name[IFNAMSIZ + 9];
196 struct i40e_ring *tx_rings[I40E_MAX_VSI_QP];
197 u32 tx_timeout_count;
198 struct list_head mac_filter_list;
201 struct i40e_ring *rx_rings[I40E_MAX_VSI_QP];
204 u64 hw_csum_rx_error;
205 int num_msix_vectors;
206 struct msix_entry *msix_entries;
208 volatile unsigned long flags;
209 #define I40EVF_FLAG_RX_CSUM_ENABLED (u32)(1)
210 #define I40EVF_FLAG_RX_1BUF_CAPABLE (u32)(1 << 1)
211 #define I40EVF_FLAG_RX_PS_CAPABLE (u32)(1 << 2)
212 #define I40EVF_FLAG_RX_PS_ENABLED (u32)(1 << 3)
213 #define I40EVF_FLAG_IN_NETPOLL (u32)(1 << 4)
214 #define I40EVF_FLAG_IMIR_ENABLED (u32)(1 << 5)
215 #define I40EVF_FLAG_MQ_CAPABLE (u32)(1 << 6)
216 #define I40EVF_FLAG_NEED_LINK_UPDATE (u32)(1 << 7)
217 /* duplcates for common code */
218 #define I40E_FLAG_FDIR_ATR_ENABLED 0
219 #define I40E_FLAG_DCB_ENABLED 0
220 #define I40E_FLAG_IN_NETPOLL I40EVF_FLAG_IN_NETPOLL
221 #define I40E_FLAG_RX_CSUM_ENABLED I40EVF_FLAG_RX_CSUM_ENABLED
222 /* flags for admin queue service task */
225 #define I40EVF_FLAG_AQ_ENABLE_QUEUES (u32)(1)
226 #define I40EVF_FLAG_AQ_DISABLE_QUEUES (u32)(1 << 1)
227 #define I40EVF_FLAG_AQ_ADD_MAC_FILTER (u32)(1 << 2)
228 #define I40EVF_FLAG_AQ_ADD_VLAN_FILTER (u32)(1 << 3)
229 #define I40EVF_FLAG_AQ_DEL_MAC_FILTER (u32)(1 << 4)
230 #define I40EVF_FLAG_AQ_DEL_VLAN_FILTER (u32)(1 << 5)
231 #define I40EVF_FLAG_AQ_CONFIGURE_QUEUES (u32)(1 << 6)
232 #define I40EVF_FLAG_AQ_MAP_VECTORS (u32)(1 << 7)
233 #define I40EVF_FLAG_AQ_HANDLE_RESET (u32)(1 << 8)
234 /* OS defined structs */
235 struct net_device *netdev;
236 struct pci_dev *pdev;
237 struct net_device_stats net_stats;
239 struct i40e_hw hw; /* defined in i40e_type.h */
241 enum i40evf_state_t state;
242 volatile unsigned long crit_section;
244 struct work_struct watchdog_task;
245 bool netdev_registered;
247 enum i40e_virtchnl_ops current_op;
248 struct i40e_virtchnl_vf_resource *vf_res; /* incl. all VSIs */
249 struct i40e_virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
251 struct i40e_eth_stats current_stats;
257 /* needed by i40evf_ethtool.c */
258 extern char i40evf_driver_name[];
259 extern const char i40evf_driver_version[];
261 int i40evf_up(struct i40evf_adapter *adapter);
262 void i40evf_down(struct i40evf_adapter *adapter);
263 void i40evf_reinit_locked(struct i40evf_adapter *adapter);
264 void i40evf_reset(struct i40evf_adapter *adapter);
265 void i40evf_set_ethtool_ops(struct net_device *netdev);
266 void i40evf_update_stats(struct i40evf_adapter *adapter);
267 void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter);
268 int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter);
269 void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask);
271 void i40e_napi_add_all(struct i40evf_adapter *adapter);
272 void i40e_napi_del_all(struct i40evf_adapter *adapter);
274 int i40evf_send_api_ver(struct i40evf_adapter *adapter);
275 int i40evf_verify_api_ver(struct i40evf_adapter *adapter);
276 int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter);
277 int i40evf_get_vf_config(struct i40evf_adapter *adapter);
278 void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush);
279 void i40evf_configure_queues(struct i40evf_adapter *adapter);
280 void i40evf_deconfigure_queues(struct i40evf_adapter *adapter);
281 void i40evf_enable_queues(struct i40evf_adapter *adapter);
282 void i40evf_disable_queues(struct i40evf_adapter *adapter);
283 void i40evf_map_queues(struct i40evf_adapter *adapter);
284 void i40evf_add_ether_addrs(struct i40evf_adapter *adapter);
285 void i40evf_del_ether_addrs(struct i40evf_adapter *adapter);
286 void i40evf_add_vlans(struct i40evf_adapter *adapter);
287 void i40evf_del_vlans(struct i40evf_adapter *adapter);
288 void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags);
289 void i40evf_request_stats(struct i40evf_adapter *adapter);
290 void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
291 enum i40e_virtchnl_ops v_opcode,
292 i40e_status v_retval, u8 *msg, u16 msglen);
293 #endif /* _I40EVF_H_ */