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".
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
31 #include <linux/types.h>
32 #include <linux/pci.h>
33 #include <linux/netdevice.h>
34 #include <linux/aer.h>
36 #include "ixgbe_type.h"
37 #include "ixgbe_common.h"
38 #include "ixgbe_dcb.h"
39 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
41 #include "ixgbe_fcoe.h"
42 #endif /* CONFIG_FCOE or CONFIG_FCOE_MODULE */
43 #ifdef CONFIG_IXGBE_DCA
44 #include <linux/dca.h>
48 #define DPRINTK(nlevel, klevel, fmt, args...) \
49 ((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
50 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
53 /* TX/RX descriptor defines */
54 #define IXGBE_DEFAULT_TXD 1024
55 #define IXGBE_MAX_TXD 4096
56 #define IXGBE_MIN_TXD 64
58 #define IXGBE_DEFAULT_RXD 1024
59 #define IXGBE_MAX_RXD 4096
60 #define IXGBE_MIN_RXD 64
63 #define IXGBE_DEFAULT_FCRTL 0x10000
64 #define IXGBE_MIN_FCRTL 0x40
65 #define IXGBE_MAX_FCRTL 0x7FF80
66 #define IXGBE_DEFAULT_FCRTH 0x20000
67 #define IXGBE_MIN_FCRTH 0x600
68 #define IXGBE_MAX_FCRTH 0x7FFF0
69 #define IXGBE_DEFAULT_FCPAUSE 0xFFFF
70 #define IXGBE_MIN_FCPAUSE 0
71 #define IXGBE_MAX_FCPAUSE 0xFFFF
73 /* Supported Rx Buffer Sizes */
74 #define IXGBE_RXBUFFER_64 64 /* Used for packet split */
75 #define IXGBE_RXBUFFER_128 128 /* Used for packet split */
76 #define IXGBE_RXBUFFER_256 256 /* Used for packet split */
77 #define IXGBE_RXBUFFER_2048 2048
78 #define IXGBE_RXBUFFER_4096 4096
79 #define IXGBE_RXBUFFER_8192 8192
80 #define IXGBE_MAX_RXBUFFER 16384 /* largest size for a single descriptor */
82 #define IXGBE_RX_HDR_SIZE IXGBE_RXBUFFER_256
84 #define MAXIMUM_ETHERNET_VLAN_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
86 /* How many Rx Buffers do we bundle into one write to the hardware ? */
87 #define IXGBE_RX_BUFFER_WRITE 16 /* Must be power of 2 */
89 #define IXGBE_TX_FLAGS_CSUM (u32)(1)
90 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
91 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
92 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
93 #define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4)
94 #define IXGBE_TX_FLAGS_FSO (u32)(1 << 5)
95 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
96 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000
97 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16
99 #define IXGBE_MAX_RSC_INT_RATE 162760
101 /* wrapper around a pointer to a socket buffer,
102 * so a DMA handle can be stored along with the buffer */
103 struct ixgbe_tx_buffer {
106 unsigned long time_stamp;
111 struct ixgbe_rx_buffer {
116 unsigned int page_offset;
119 struct ixgbe_queue_stats {
125 void *desc; /* descriptor ring memory */
127 struct ixgbe_tx_buffer *tx_buffer_info;
128 struct ixgbe_rx_buffer *rx_buffer_info;
132 u16 count; /* amount of descriptors */
137 u8 queue_index; /* needed for multiqueue queue management */
139 #define IXGBE_RING_RX_PS_ENABLED (u8)(1)
140 u8 flags; /* per ring feature flags */
144 unsigned int total_bytes;
145 unsigned int total_packets;
147 #ifdef CONFIG_IXGBE_DCA
148 /* cpu for tx queue */
152 u16 work_limit; /* max work per interrupt */
153 u16 reg_idx; /* holds the special value that gets
154 * the hardware register offset
155 * associated with this ring, which is
156 * different for DCB and RSS modes
159 struct ixgbe_queue_stats stats;
160 unsigned long reinit_state;
161 u64 rsc_count; /* stat for coalesced packets */
163 unsigned int size; /* length in bytes */
164 dma_addr_t dma; /* phys. address of descriptor ring */
167 enum ixgbe_ring_f_enum {
175 #endif /* IXGBE_FCOE */
177 RING_F_ARRAY_SIZE /* must be last in enum set */
180 #define IXGBE_MAX_DCB_INDICES 8
181 #define IXGBE_MAX_RSS_INDICES 16
182 #define IXGBE_MAX_VMDQ_INDICES 16
183 #define IXGBE_MAX_FDIR_INDICES 64
185 #define IXGBE_MAX_FCOE_INDICES 8
186 #endif /* IXGBE_FCOE */
187 struct ixgbe_ring_feature {
192 #define MAX_RX_QUEUES 128
193 #define MAX_TX_QUEUES 128
195 #define MAX_RX_PACKET_BUFFERS ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) \
197 #define MAX_TX_PACKET_BUFFERS MAX_RX_PACKET_BUFFERS
199 /* MAX_MSIX_Q_VECTORS of these are allocated,
200 * but we only use one per queue-specific vector.
202 struct ixgbe_q_vector {
203 struct ixgbe_adapter *adapter;
204 unsigned int v_idx; /* index of q_vector within array, also used for
205 * finding the bit in EICR and friends that
206 * represents the vector for this ring */
207 struct napi_struct napi;
208 DECLARE_BITMAP(rxr_idx, MAX_RX_QUEUES); /* Rx ring indices */
209 DECLARE_BITMAP(txr_idx, MAX_TX_QUEUES); /* Tx ring indices */
210 u8 rxr_count; /* Rx ring count assigned to this vector */
211 u8 txr_count; /* Tx ring count assigned to this vector */
217 /* Helper macros to switch between ints/sec and what the register uses.
218 * And yes, it's the same math going both ways. The lowest value
219 * supported by all of the ixgbe hardware is 8.
221 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
222 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
223 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
225 #define IXGBE_DESC_UNUSED(R) \
226 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
227 (R)->next_to_clean - (R)->next_to_use - 1)
229 #define IXGBE_RX_DESC_ADV(R, i) \
230 (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
231 #define IXGBE_TX_DESC_ADV(R, i) \
232 (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
233 #define IXGBE_TX_CTXTDESC_ADV(R, i) \
234 (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
236 #define IXGBE_MAX_JUMBO_FRAME_SIZE 16128
238 /* Use 3K as the baby jumbo frame size for FCoE */
239 #define IXGBE_FCOE_JUMBO_FRAME_SIZE 3072
240 #endif /* IXGBE_FCOE */
242 #define OTHER_VECTOR 1
243 #define NON_Q_VECTORS (OTHER_VECTOR)
245 #define MAX_MSIX_VECTORS_82599 64
246 #define MAX_MSIX_Q_VECTORS_82599 64
247 #define MAX_MSIX_VECTORS_82598 18
248 #define MAX_MSIX_Q_VECTORS_82598 16
250 #define MAX_MSIX_Q_VECTORS MAX_MSIX_Q_VECTORS_82599
251 #define MAX_MSIX_COUNT MAX_MSIX_VECTORS_82599
253 #define MIN_MSIX_Q_VECTORS 2
254 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)
256 /* board specific private data structure */
257 struct ixgbe_adapter {
258 struct timer_list watchdog_timer;
259 struct vlan_group *vlgrp;
261 struct work_struct reset_task;
262 struct ixgbe_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
263 char name[MAX_MSIX_COUNT][IFNAMSIZ + 9];
264 struct ixgbe_dcb_config dcb_cfg;
265 struct ixgbe_dcb_config temp_dcb_cfg;
267 enum ixgbe_fc_mode last_lfc_mode;
269 /* Interrupt Throttle Rate */
276 struct ixgbe_ring *tx_ring; /* One per active queue */
283 u32 tx_timeout_count;
287 struct ixgbe_ring *rx_ring; /* One per active queue */
289 u64 hw_csum_rx_error;
290 u64 hw_rx_no_dma_resources;
293 int num_msix_vectors;
294 int max_msix_q_vectors; /* true count of q_vectors for device */
295 struct ixgbe_ring_feature ring_feature[RING_F_ARRAY_SIZE];
296 struct msix_entry *msix_entries;
299 u32 alloc_rx_page_failed;
300 u32 alloc_rx_buff_failed;
302 /* Some features need tri-state capability,
303 * thus the additional *_CAPABLE flags.
306 #define IXGBE_FLAG_RX_CSUM_ENABLED (u32)(1)
307 #define IXGBE_FLAG_MSI_CAPABLE (u32)(1 << 1)
308 #define IXGBE_FLAG_MSI_ENABLED (u32)(1 << 2)
309 #define IXGBE_FLAG_MSIX_CAPABLE (u32)(1 << 3)
310 #define IXGBE_FLAG_MSIX_ENABLED (u32)(1 << 4)
311 #define IXGBE_FLAG_RX_1BUF_CAPABLE (u32)(1 << 6)
312 #define IXGBE_FLAG_RX_PS_CAPABLE (u32)(1 << 7)
313 #define IXGBE_FLAG_RX_PS_ENABLED (u32)(1 << 8)
314 #define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 9)
315 #define IXGBE_FLAG_DCA_ENABLED (u32)(1 << 10)
316 #define IXGBE_FLAG_DCA_CAPABLE (u32)(1 << 11)
317 #define IXGBE_FLAG_IMIR_ENABLED (u32)(1 << 12)
318 #define IXGBE_FLAG_MQ_CAPABLE (u32)(1 << 13)
319 #define IXGBE_FLAG_DCB_ENABLED (u32)(1 << 14)
320 #define IXGBE_FLAG_RSS_ENABLED (u32)(1 << 16)
321 #define IXGBE_FLAG_RSS_CAPABLE (u32)(1 << 17)
322 #define IXGBE_FLAG_VMDQ_CAPABLE (u32)(1 << 18)
323 #define IXGBE_FLAG_VMDQ_ENABLED (u32)(1 << 19)
324 #define IXGBE_FLAG_FAN_FAIL_CAPABLE (u32)(1 << 20)
325 #define IXGBE_FLAG_NEED_LINK_UPDATE (u32)(1 << 22)
326 #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1 << 23)
327 #define IXGBE_FLAG_IN_SFP_LINK_TASK (u32)(1 << 24)
328 #define IXGBE_FLAG_IN_SFP_MOD_TASK (u32)(1 << 25)
329 #define IXGBE_FLAG_FDIR_HASH_CAPABLE (u32)(1 << 26)
330 #define IXGBE_FLAG_FDIR_PERFECT_CAPABLE (u32)(1 << 27)
331 #define IXGBE_FLAG_FCOE_CAPABLE (u32)(1 << 28)
332 #define IXGBE_FLAG_FCOE_ENABLED (u32)(1 << 29)
335 #define IXGBE_FLAG2_RSC_CAPABLE (u32)(1)
336 #define IXGBE_FLAG2_RSC_ENABLED (u32)(1 << 1)
337 /* default to trying for four seconds */
338 #define IXGBE_TRY_LINK_TIMEOUT (4 * HZ)
340 /* OS defined structs */
341 struct net_device *netdev;
342 struct pci_dev *pdev;
343 struct net_device_stats net_stats;
346 struct ixgbe_ring test_tx_ring;
347 struct ixgbe_ring test_rx_ring;
349 /* structs defined in ixgbe_hw.h */
352 struct ixgbe_hw_stats stats;
354 /* Interrupt Throttle Rate */
360 unsigned int tx_ring_count;
361 unsigned int rx_ring_count;
365 unsigned long link_check_timeout;
367 struct work_struct watchdog_task;
368 struct work_struct sfp_task;
369 struct timer_list sfp_timer;
370 struct work_struct multispeed_fiber_task;
371 struct work_struct sfp_config_module_task;
374 spinlock_t fdir_perfect_lock;
375 struct work_struct fdir_reinit_task;
377 struct ixgbe_fcoe fcoe;
378 #endif /* IXGBE_FCOE */
388 __IXGBE_FDIR_INIT_DONE,
389 __IXGBE_SFP_MODULE_NOT_FOUND
397 extern struct ixgbe_info ixgbe_82598_info;
398 extern struct ixgbe_info ixgbe_82599_info;
399 #ifdef CONFIG_IXGBE_DCB
400 extern struct dcbnl_rtnl_ops dcbnl_ops;
401 extern int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
402 struct ixgbe_dcb_config *dst_dcb_cfg,
406 extern char ixgbe_driver_name[];
407 extern const char ixgbe_driver_version[];
409 extern int ixgbe_up(struct ixgbe_adapter *adapter);
410 extern void ixgbe_down(struct ixgbe_adapter *adapter);
411 extern void ixgbe_reinit_locked(struct ixgbe_adapter *adapter);
412 extern void ixgbe_reset(struct ixgbe_adapter *adapter);
413 extern void ixgbe_set_ethtool_ops(struct net_device *netdev);
414 extern int ixgbe_setup_rx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
415 extern int ixgbe_setup_tx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
416 extern void ixgbe_free_rx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
417 extern void ixgbe_free_tx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
418 extern void ixgbe_update_stats(struct ixgbe_adapter *adapter);
419 extern int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter);
420 extern void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter);
421 extern void ixgbe_write_eitr(struct ixgbe_q_vector *);
422 extern int ethtool_ioctl(struct ifreq *ifr);
423 extern s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw);
424 extern s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 pballoc);
425 extern s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 pballoc);
426 extern s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
427 struct ixgbe_atr_input *input,
429 extern s32 ixgbe_atr_set_vlan_id_82599(struct ixgbe_atr_input *input,
431 extern s32 ixgbe_atr_set_src_ipv4_82599(struct ixgbe_atr_input *input,
433 extern s32 ixgbe_atr_set_dst_ipv4_82599(struct ixgbe_atr_input *input,
435 extern s32 ixgbe_atr_set_src_port_82599(struct ixgbe_atr_input *input,
437 extern s32 ixgbe_atr_set_dst_port_82599(struct ixgbe_atr_input *input,
439 extern s32 ixgbe_atr_set_flex_byte_82599(struct ixgbe_atr_input *input,
441 extern s32 ixgbe_atr_set_l4type_82599(struct ixgbe_atr_input *input,
444 extern void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter);
445 extern int ixgbe_fso(struct ixgbe_adapter *adapter,
446 struct ixgbe_ring *tx_ring, struct sk_buff *skb,
447 u32 tx_flags, u8 *hdr_len);
448 extern void ixgbe_cleanup_fcoe(struct ixgbe_adapter *adapter);
449 extern int ixgbe_fcoe_ddp(struct ixgbe_adapter *adapter,
450 union ixgbe_adv_rx_desc *rx_desc,
451 struct sk_buff *skb);
452 extern int ixgbe_fcoe_ddp_get(struct net_device *netdev, u16 xid,
453 struct scatterlist *sgl, unsigned int sgc);
454 extern int ixgbe_fcoe_ddp_put(struct net_device *netdev, u16 xid);
455 extern int ixgbe_fcoe_enable(struct net_device *netdev);
456 extern int ixgbe_fcoe_disable(struct net_device *netdev);
457 #ifdef CONFIG_IXGBE_DCB
458 extern u8 ixgbe_fcoe_getapp(struct ixgbe_adapter *adapter);
459 extern u8 ixgbe_fcoe_setapp(struct ixgbe_adapter *adapter, u8 up);
460 #endif /* CONFIG_IXGBE_DCB */
461 #endif /* IXGBE_FCOE */
463 #endif /* _IXGBE_H_ */