1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2007 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 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
32 #include <linux/types.h>
33 #include <linux/pci.h>
34 #include <linux/netdevice.h>
35 #include <linux/inet_lro.h>
37 #include "ixgbe_type.h"
38 #include "ixgbe_common.h"
40 #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
41 #include <linux/dca.h>
45 #define DPRINTK(nlevel, klevel, fmt, args...) \
46 ((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
47 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
48 __FUNCTION__ , ## args)))
50 /* TX/RX descriptor defines */
51 #define IXGBE_DEFAULT_TXD 1024
52 #define IXGBE_MAX_TXD 4096
53 #define IXGBE_MIN_TXD 64
55 #define IXGBE_DEFAULT_RXD 1024
56 #define IXGBE_MAX_RXD 4096
57 #define IXGBE_MIN_RXD 64
59 #define IXGBE_DEFAULT_RXQ 1
60 #define IXGBE_MAX_RXQ 1
61 #define IXGBE_MIN_RXQ 1
64 #define IXGBE_DEFAULT_FCRTL 0x10000
65 #define IXGBE_MIN_FCRTL 0x40
66 #define IXGBE_MAX_FCRTL 0x7FF80
67 #define IXGBE_DEFAULT_FCRTH 0x20000
68 #define IXGBE_MIN_FCRTH 0x600
69 #define IXGBE_MAX_FCRTH 0x7FFF0
70 #define IXGBE_DEFAULT_FCPAUSE 0xFFFF
71 #define IXGBE_MIN_FCPAUSE 0
72 #define IXGBE_MAX_FCPAUSE 0xFFFF
74 /* Supported Rx Buffer Sizes */
75 #define IXGBE_RXBUFFER_64 64 /* Used for packet split */
76 #define IXGBE_RXBUFFER_128 128 /* Used for packet split */
77 #define IXGBE_RXBUFFER_256 256 /* Used for packet split */
78 #define IXGBE_RXBUFFER_2048 2048
80 #define IXGBE_RX_HDR_SIZE IXGBE_RXBUFFER_256
82 #define MAXIMUM_ETHERNET_VLAN_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
84 /* How many Tx Descriptors do we need to call netif_wake_queue? */
85 #define IXGBE_TX_QUEUE_WAKE 16
87 /* How many Rx Buffers do we bundle into one write to the hardware ? */
88 #define IXGBE_RX_BUFFER_WRITE 16 /* Must be power of 2 */
90 #define IXGBE_TX_FLAGS_CSUM (u32)(1)
91 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
92 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
93 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
94 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
95 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16
97 #define IXGBE_MAX_LRO_DESCRIPTORS 8
98 #define IXGBE_MAX_LRO_AGGREGATE 32
100 /* wrapper around a pointer to a socket buffer,
101 * so a DMA handle can be stored along with the buffer */
102 struct ixgbe_tx_buffer
{
105 unsigned long time_stamp
;
110 struct ixgbe_rx_buffer
{
115 unsigned int page_offset
;
118 struct ixgbe_queue_stats
{
124 void *desc
; /* descriptor ring memory */
125 dma_addr_t dma
; /* phys. address of descriptor ring */
126 unsigned int size
; /* length in bytes */
127 unsigned int count
; /* amount of descriptors */
128 unsigned int next_to_use
;
129 unsigned int next_to_clean
;
131 int queue_index
; /* needed for multiqueue queue management */
133 struct ixgbe_tx_buffer
*tx_buffer_info
;
134 struct ixgbe_rx_buffer
*rx_buffer_info
;
140 unsigned int total_bytes
;
141 unsigned int total_packets
;
143 u16 reg_idx
; /* holds the special value that gets the hardware register
144 * offset associated with this ring, which is different
145 * for DCE and RSS modes */
147 #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
148 /* cpu for tx queue */
151 struct net_lro_mgr lro_mgr
;
153 struct ixgbe_queue_stats stats
;
154 u16 v_idx
; /* maps directly to the index for this ring in the hardware
155 * vector array, can also be used for finding the bit in EICR
156 * and friends that represents the vector for this ring */
159 u16 work_limit
; /* max work per interrupt */
163 #define RING_F_VMDQ 1
165 #define IXGBE_MAX_RSS_INDICES 16
166 #define IXGBE_MAX_VMDQ_INDICES 16
167 struct ixgbe_ring_feature
{
172 #define MAX_RX_QUEUES 64
173 #define MAX_TX_QUEUES 32
175 /* MAX_MSIX_Q_VECTORS of these are allocated,
176 * but we only use one per queue-specific vector.
178 struct ixgbe_q_vector
{
179 struct ixgbe_adapter
*adapter
;
180 struct napi_struct napi
;
181 DECLARE_BITMAP(rxr_idx
, MAX_RX_QUEUES
); /* Rx ring indices */
182 DECLARE_BITMAP(txr_idx
, MAX_TX_QUEUES
); /* Tx ring indices */
183 u8 rxr_count
; /* Rx ring count assigned to this vector */
184 u8 txr_count
; /* Tx ring count assigned to this vector */
190 /* Helper macros to switch between ints/sec and what the register uses.
191 * And yes, it's the same math going both ways.
193 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
194 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 0)
195 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
197 #define IXGBE_DESC_UNUSED(R) \
198 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
199 (R)->next_to_clean - (R)->next_to_use - 1)
201 #define IXGBE_RX_DESC_ADV(R, i) \
202 (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
203 #define IXGBE_TX_DESC_ADV(R, i) \
204 (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
205 #define IXGBE_TX_CTXTDESC_ADV(R, i) \
206 (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
208 #define IXGBE_MAX_JUMBO_FRAME_SIZE 16128
210 #define OTHER_VECTOR 1
211 #define NON_Q_VECTORS (OTHER_VECTOR)
213 #define MAX_MSIX_Q_VECTORS 16
214 #define MIN_MSIX_Q_VECTORS 2
215 #define MAX_MSIX_COUNT (MAX_MSIX_Q_VECTORS + NON_Q_VECTORS)
216 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)
218 /* board specific private data structure */
219 struct ixgbe_adapter
{
220 struct timer_list watchdog_timer
;
221 struct vlan_group
*vlgrp
;
223 struct work_struct reset_task
;
224 struct ixgbe_q_vector q_vector
[MAX_MSIX_Q_VECTORS
];
225 char name
[MAX_MSIX_COUNT
][IFNAMSIZ
+ 5];
227 /* Interrupt Throttle Rate */
233 struct ixgbe_ring
*tx_ring
; /* One per active queue */
240 u32 tx_timeout_count
;
244 struct ixgbe_ring
*rx_ring
; /* One per active queue */
246 u64 hw_csum_rx_error
;
249 int num_msix_vectors
;
250 struct ixgbe_ring_feature ring_feature
[3];
251 struct msix_entry
*msix_entries
;
254 u32 alloc_rx_page_failed
;
255 u32 alloc_rx_buff_failed
;
257 /* Some features need tri-state capability,
258 * thus the additional *_CAPABLE flags.
261 #define IXGBE_FLAG_RX_CSUM_ENABLED (u32)(1)
262 #define IXGBE_FLAG_MSI_CAPABLE (u32)(1 << 1)
263 #define IXGBE_FLAG_MSI_ENABLED (u32)(1 << 2)
264 #define IXGBE_FLAG_MSIX_CAPABLE (u32)(1 << 3)
265 #define IXGBE_FLAG_MSIX_ENABLED (u32)(1 << 4)
266 #define IXGBE_FLAG_RX_1BUF_CAPABLE (u32)(1 << 6)
267 #define IXGBE_FLAG_RX_PS_CAPABLE (u32)(1 << 7)
268 #define IXGBE_FLAG_RX_PS_ENABLED (u32)(1 << 8)
269 #define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 9)
270 #define IXGBE_FLAG_DCA_ENABLED (u32)(1 << 10)
271 #define IXGBE_FLAG_DCA_CAPABLE (u32)(1 << 11)
272 #define IXGBE_FLAG_IMIR_ENABLED (u32)(1 << 12)
273 #define IXGBE_FLAG_MQ_CAPABLE (u32)(1 << 13)
274 #define IXGBE_FLAG_RSS_ENABLED (u32)(1 << 16)
275 #define IXGBE_FLAG_RSS_CAPABLE (u32)(1 << 17)
276 #define IXGBE_FLAG_VMDQ_CAPABLE (u32)(1 << 18)
277 #define IXGBE_FLAG_VMDQ_ENABLED (u32)(1 << 19)
278 #define IXGBE_FLAG_NEED_LINK_UPDATE (u32)(1 << 22)
279 #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1 << 23)
281 /* default to trying for four seconds */
282 #define IXGBE_TRY_LINK_TIMEOUT (4 * HZ)
284 /* OS defined structs */
285 struct net_device
*netdev
;
286 struct pci_dev
*pdev
;
287 struct net_device_stats net_stats
;
289 /* structs defined in ixgbe_hw.h */
292 struct ixgbe_hw_stats stats
;
294 /* Interrupt Throttle Rate */
302 unsigned int tx_ring_count
;
303 unsigned int rx_ring_count
;
307 unsigned long link_check_timeout
;
309 struct work_struct watchdog_task
;
322 extern struct ixgbe_info ixgbe_82598_info
;
324 extern char ixgbe_driver_name
[];
325 extern const char ixgbe_driver_version
[];
327 extern int ixgbe_up(struct ixgbe_adapter
*adapter
);
328 extern void ixgbe_down(struct ixgbe_adapter
*adapter
);
329 extern void ixgbe_reinit_locked(struct ixgbe_adapter
*adapter
);
330 extern void ixgbe_reset(struct ixgbe_adapter
*adapter
);
331 extern void ixgbe_update_stats(struct ixgbe_adapter
*adapter
);
332 extern void ixgbe_set_ethtool_ops(struct net_device
*netdev
);
333 extern int ixgbe_setup_rx_resources(struct ixgbe_adapter
*adapter
,
334 struct ixgbe_ring
*rxdr
);
335 extern int ixgbe_setup_tx_resources(struct ixgbe_adapter
*adapter
,
336 struct ixgbe_ring
*txdr
);
337 extern void ixgbe_free_rx_resources(struct ixgbe_adapter
*adapter
,
338 struct ixgbe_ring
*rxdr
);
339 extern void ixgbe_free_tx_resources(struct ixgbe_adapter
*adapter
,
340 struct ixgbe_ring
*txdr
);
342 #endif /* _IXGBE_H_ */