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 *******************************************************************************/
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 #ifdef CONFIG_IXGBE_DCA
40 #include <linux/dca.h>
44 #define DPRINTK(nlevel, klevel, fmt, args...) \
45 ((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
46 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
49 /* TX/RX descriptor defines */
50 #define IXGBE_DEFAULT_TXD 1024
51 #define IXGBE_MAX_TXD 4096
52 #define IXGBE_MIN_TXD 64
54 #define IXGBE_DEFAULT_RXD 1024
55 #define IXGBE_MAX_RXD 4096
56 #define IXGBE_MIN_RXD 64
59 #define IXGBE_DEFAULT_FCRTL 0x10000
60 #define IXGBE_MIN_FCRTL 0x40
61 #define IXGBE_MAX_FCRTL 0x7FF80
62 #define IXGBE_DEFAULT_FCRTH 0x20000
63 #define IXGBE_MIN_FCRTH 0x600
64 #define IXGBE_MAX_FCRTH 0x7FFF0
65 #define IXGBE_DEFAULT_FCPAUSE 0xFFFF
66 #define IXGBE_MIN_FCPAUSE 0
67 #define IXGBE_MAX_FCPAUSE 0xFFFF
69 /* Supported Rx Buffer Sizes */
70 #define IXGBE_RXBUFFER_64 64 /* Used for packet split */
71 #define IXGBE_RXBUFFER_128 128 /* Used for packet split */
72 #define IXGBE_RXBUFFER_256 256 /* Used for packet split */
73 #define IXGBE_RXBUFFER_2048 2048
74 #define IXGBE_MAX_RXBUFFER 16384 /* largest size for a single descriptor */
76 #define IXGBE_RX_HDR_SIZE IXGBE_RXBUFFER_256
78 #define MAXIMUM_ETHERNET_VLAN_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
80 /* How many Rx Buffers do we bundle into one write to the hardware ? */
81 #define IXGBE_RX_BUFFER_WRITE 16 /* Must be power of 2 */
83 #define IXGBE_TX_FLAGS_CSUM (u32)(1)
84 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
85 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
86 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
87 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
88 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000
89 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16
91 /* wrapper around a pointer to a socket buffer,
92 * so a DMA handle can be stored along with the buffer */
93 struct ixgbe_tx_buffer {
96 unsigned long time_stamp;
101 struct ixgbe_rx_buffer {
106 unsigned int page_offset;
109 struct ixgbe_queue_stats {
115 void *desc; /* descriptor ring memory */
116 dma_addr_t dma; /* phys. address of descriptor ring */
117 unsigned int size; /* length in bytes */
118 unsigned int count; /* amount of descriptors */
119 unsigned int next_to_use;
120 unsigned int next_to_clean;
122 int queue_index; /* needed for multiqueue queue management */
124 struct ixgbe_tx_buffer *tx_buffer_info;
125 struct ixgbe_rx_buffer *rx_buffer_info;
131 unsigned int total_bytes;
132 unsigned int total_packets;
134 u16 reg_idx; /* holds the special value that gets the hardware register
135 * offset associated with this ring, which is different
136 * for DCB and RSS modes */
138 #ifdef CONFIG_IXGBE_DCA
139 /* cpu for tx queue */
142 struct ixgbe_queue_stats stats;
143 u64 v_idx; /* maps directly to the index for this ring in the hardware
144 * vector array, can also be used for finding the bit in EICR
145 * and friends that represents the vector for this ring */
148 u16 work_limit; /* max work per interrupt */
152 enum ixgbe_ring_f_enum {
158 RING_F_ARRAY_SIZE /* must be last in enum set */
161 #define IXGBE_MAX_DCB_INDICES 8
162 #define IXGBE_MAX_RSS_INDICES 16
163 #define IXGBE_MAX_VMDQ_INDICES 16
164 struct ixgbe_ring_feature {
169 #define MAX_RX_QUEUES 128
170 #define MAX_TX_QUEUES 128
172 #define MAX_RX_PACKET_BUFFERS ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) \
174 #define MAX_TX_PACKET_BUFFERS MAX_RX_PACKET_BUFFERS
176 /* MAX_MSIX_Q_VECTORS of these are allocated,
177 * but we only use one per queue-specific vector.
179 struct ixgbe_q_vector {
180 struct ixgbe_adapter *adapter;
181 struct napi_struct napi;
182 DECLARE_BITMAP(rxr_idx, MAX_RX_QUEUES); /* Rx ring indices */
183 DECLARE_BITMAP(txr_idx, MAX_TX_QUEUES); /* Tx ring indices */
184 u8 rxr_count; /* Rx ring count assigned to this vector */
185 u8 txr_count; /* Tx ring count assigned to this vector */
191 /* Helper macros to switch between ints/sec and what the register uses.
192 * And yes, it's the same math going both ways. The lowest value
193 * supported by all of the ixgbe hardware is 8.
195 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
196 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
197 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
199 #define IXGBE_DESC_UNUSED(R) \
200 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
201 (R)->next_to_clean - (R)->next_to_use - 1)
203 #define IXGBE_RX_DESC_ADV(R, i) \
204 (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
205 #define IXGBE_TX_DESC_ADV(R, i) \
206 (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
207 #define IXGBE_TX_CTXTDESC_ADV(R, i) \
208 (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
210 #define IXGBE_MAX_JUMBO_FRAME_SIZE 16128
212 #define OTHER_VECTOR 1
213 #define NON_Q_VECTORS (OTHER_VECTOR)
215 #define MAX_MSIX_VECTORS_82599 64
216 #define MAX_MSIX_Q_VECTORS_82599 64
217 #define MAX_MSIX_VECTORS_82598 18
218 #define MAX_MSIX_Q_VECTORS_82598 16
220 #define MAX_MSIX_Q_VECTORS MAX_MSIX_Q_VECTORS_82599
221 #define MAX_MSIX_COUNT MAX_MSIX_VECTORS_82599
223 #define MIN_MSIX_Q_VECTORS 2
224 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)
226 /* board specific private data structure */
227 struct ixgbe_adapter {
228 struct timer_list watchdog_timer;
229 struct vlan_group *vlgrp;
231 struct work_struct reset_task;
232 struct ixgbe_q_vector q_vector[MAX_MSIX_Q_VECTORS];
233 char name[MAX_MSIX_COUNT][IFNAMSIZ + 9];
234 struct ixgbe_dcb_config dcb_cfg;
235 struct ixgbe_dcb_config temp_dcb_cfg;
238 /* Interrupt Throttle Rate */
244 struct ixgbe_ring *tx_ring; /* One per active queue */
251 u32 tx_timeout_count;
255 struct ixgbe_ring *rx_ring; /* One per active queue */
257 u64 hw_csum_rx_error;
258 u64 hw_rx_no_dma_resources;
261 int num_msix_vectors;
262 int max_msix_q_vectors; /* true count of q_vectors for device */
263 struct ixgbe_ring_feature ring_feature[RING_F_ARRAY_SIZE];
264 struct msix_entry *msix_entries;
267 u32 alloc_rx_page_failed;
268 u32 alloc_rx_buff_failed;
270 /* Some features need tri-state capability,
271 * thus the additional *_CAPABLE flags.
274 #define IXGBE_FLAG_RX_CSUM_ENABLED (u32)(1)
275 #define IXGBE_FLAG_MSI_CAPABLE (u32)(1 << 1)
276 #define IXGBE_FLAG_MSI_ENABLED (u32)(1 << 2)
277 #define IXGBE_FLAG_MSIX_CAPABLE (u32)(1 << 3)
278 #define IXGBE_FLAG_MSIX_ENABLED (u32)(1 << 4)
279 #define IXGBE_FLAG_RX_1BUF_CAPABLE (u32)(1 << 6)
280 #define IXGBE_FLAG_RX_PS_CAPABLE (u32)(1 << 7)
281 #define IXGBE_FLAG_RX_PS_ENABLED (u32)(1 << 8)
282 #define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 9)
283 #define IXGBE_FLAG_DCA_ENABLED (u32)(1 << 10)
284 #define IXGBE_FLAG_DCA_CAPABLE (u32)(1 << 11)
285 #define IXGBE_FLAG_IMIR_ENABLED (u32)(1 << 12)
286 #define IXGBE_FLAG_MQ_CAPABLE (u32)(1 << 13)
287 #define IXGBE_FLAG_DCB_ENABLED (u32)(1 << 14)
288 #define IXGBE_FLAG_RSS_ENABLED (u32)(1 << 16)
289 #define IXGBE_FLAG_RSS_CAPABLE (u32)(1 << 17)
290 #define IXGBE_FLAG_VMDQ_CAPABLE (u32)(1 << 18)
291 #define IXGBE_FLAG_VMDQ_ENABLED (u32)(1 << 19)
292 #define IXGBE_FLAG_FAN_FAIL_CAPABLE (u32)(1 << 20)
293 #define IXGBE_FLAG_NEED_LINK_UPDATE (u32)(1 << 22)
294 #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1 << 23)
295 #define IXGBE_FLAG_IN_SFP_LINK_TASK (u32)(1 << 24)
296 #define IXGBE_FLAG_IN_SFP_MOD_TASK (u32)(1 << 25)
298 /* default to trying for four seconds */
299 #define IXGBE_TRY_LINK_TIMEOUT (4 * HZ)
301 /* OS defined structs */
302 struct net_device *netdev;
303 struct pci_dev *pdev;
304 struct net_device_stats net_stats;
306 /* structs defined in ixgbe_hw.h */
309 struct ixgbe_hw_stats stats;
311 /* Interrupt Throttle Rate */
316 unsigned int tx_ring_count;
317 unsigned int rx_ring_count;
321 unsigned long link_check_timeout;
323 struct work_struct watchdog_task;
324 struct work_struct sfp_task;
325 struct timer_list sfp_timer;
326 struct work_struct multispeed_fiber_task;
327 struct work_struct sfp_config_module_task;
336 __IXGBE_SFP_MODULE_NOT_FOUND
344 extern struct ixgbe_info ixgbe_82598_info;
345 extern struct ixgbe_info ixgbe_82599_info;
346 #ifdef CONFIG_IXGBE_DCB
347 extern struct dcbnl_rtnl_ops dcbnl_ops;
348 extern int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
349 struct ixgbe_dcb_config *dst_dcb_cfg,
353 extern char ixgbe_driver_name[];
354 extern const char ixgbe_driver_version[];
356 extern int ixgbe_up(struct ixgbe_adapter *adapter);
357 extern void ixgbe_down(struct ixgbe_adapter *adapter);
358 extern void ixgbe_reinit_locked(struct ixgbe_adapter *adapter);
359 extern void ixgbe_reset(struct ixgbe_adapter *adapter);
360 extern void ixgbe_set_ethtool_ops(struct net_device *netdev);
361 extern int ixgbe_setup_rx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
362 extern int ixgbe_setup_tx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
363 extern void ixgbe_free_rx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
364 extern void ixgbe_free_tx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
365 extern void ixgbe_update_stats(struct ixgbe_adapter *adapter);
366 extern void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter);
367 extern int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter);
368 void ixgbe_napi_add_all(struct ixgbe_adapter *adapter);
369 void ixgbe_napi_del_all(struct ixgbe_adapter *adapter);
370 extern void ixgbe_write_eitr(struct ixgbe_adapter *, int, u32);
372 #endif /* _IXGBE_H_ */