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>
44 #define IXGBE_ERR(args...) printk(KERN_ERR "ixgbe: " args)
47 #define DPRINTK(nlevel, klevel, fmt, args...) \
48 ((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
49 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
50 __FUNCTION__ , ## args)))
52 /* TX/RX descriptor defines */
53 #define IXGBE_DEFAULT_TXD 1024
54 #define IXGBE_MAX_TXD 4096
55 #define IXGBE_MIN_TXD 64
57 #define IXGBE_DEFAULT_RXD 1024
58 #define IXGBE_MAX_RXD 4096
59 #define IXGBE_MIN_RXD 64
61 #define IXGBE_DEFAULT_RXQ 1
62 #define IXGBE_MAX_RXQ 1
63 #define IXGBE_MIN_RXQ 1
65 #define IXGBE_DEFAULT_ITR_RX_USECS 125 /* 8k irqs/sec */
66 #define IXGBE_DEFAULT_ITR_TX_USECS 250 /* 4k irqs/sec */
67 #define IXGBE_MIN_ITR_USECS 100 /* 500k irqs/sec */
68 #define IXGBE_MAX_ITR_USECS 10000 /* 100 irqs/sec */
71 #define IXGBE_DEFAULT_FCRTL 0x10000
72 #define IXGBE_MIN_FCRTL 0x40
73 #define IXGBE_MAX_FCRTL 0x7FF80
74 #define IXGBE_DEFAULT_FCRTH 0x20000
75 #define IXGBE_MIN_FCRTH 0x600
76 #define IXGBE_MAX_FCRTH 0x7FFF0
77 #define IXGBE_DEFAULT_FCPAUSE 0xFFFF
78 #define IXGBE_MIN_FCPAUSE 0
79 #define IXGBE_MAX_FCPAUSE 0xFFFF
81 /* Supported Rx Buffer Sizes */
82 #define IXGBE_RXBUFFER_64 64 /* Used for packet split */
83 #define IXGBE_RXBUFFER_128 128 /* Used for packet split */
84 #define IXGBE_RXBUFFER_256 256 /* Used for packet split */
85 #define IXGBE_RXBUFFER_2048 2048
87 #define IXGBE_RX_HDR_SIZE IXGBE_RXBUFFER_256
89 #define MAXIMUM_ETHERNET_VLAN_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
91 /* How many Tx Descriptors do we need to call netif_wake_queue? */
92 #define IXGBE_TX_QUEUE_WAKE 16
94 /* How many Rx Buffers do we bundle into one write to the hardware ? */
95 #define IXGBE_RX_BUFFER_WRITE 16 /* Must be power of 2 */
97 #define IXGBE_TX_FLAGS_CSUM (u32)(1)
98 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
99 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
100 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
101 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
102 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16
104 #define IXGBE_MAX_LRO_DESCRIPTORS 8
105 #define IXGBE_MAX_LRO_AGGREGATE 32
107 /* wrapper around a pointer to a socket buffer,
108 * so a DMA handle can be stored along with the buffer */
109 struct ixgbe_tx_buffer {
112 unsigned long time_stamp;
117 struct ixgbe_rx_buffer {
124 struct ixgbe_queue_stats {
130 void *desc; /* descriptor ring memory */
131 dma_addr_t dma; /* phys. address of descriptor ring */
132 unsigned int size; /* length in bytes */
133 unsigned int count; /* amount of descriptors */
134 unsigned int next_to_use;
135 unsigned int next_to_clean;
137 int queue_index; /* needed for multiqueue queue management */
139 struct ixgbe_tx_buffer *tx_buffer_info;
140 struct ixgbe_rx_buffer *rx_buffer_info;
146 unsigned int total_bytes;
147 unsigned int total_packets;
149 u16 reg_idx; /* holds the special value that gets the hardware register
150 * offset associated with this ring, which is different
151 * for DCE and RSS modes */
153 #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
154 /* cpu for tx queue */
157 struct net_lro_mgr lro_mgr;
159 struct ixgbe_queue_stats stats;
160 u8 v_idx; /* maps directly to the index for this ring in the hardware
161 * vector array, can also be used for finding the bit in EICR
162 * and friends that represents the vector for this ring */
167 char name[IFNAMSIZ + 5];
168 u16 work_limit; /* max work per interrupt */
172 #define RING_F_VMDQ 1
174 #define IXGBE_MAX_RSS_INDICES 16
175 #define IXGBE_MAX_VMDQ_INDICES 16
176 struct ixgbe_ring_feature {
181 #define MAX_RX_QUEUES 64
182 #define MAX_TX_QUEUES 32
184 /* MAX_MSIX_Q_VECTORS of these are allocated,
185 * but we only use one per queue-specific vector.
187 struct ixgbe_q_vector {
188 struct ixgbe_adapter *adapter;
189 struct napi_struct napi;
190 DECLARE_BITMAP(rxr_idx, MAX_RX_QUEUES); /* Rx ring indices */
191 DECLARE_BITMAP(txr_idx, MAX_TX_QUEUES); /* Tx ring indices */
192 u8 rxr_count; /* Rx ring count assigned to this vector */
193 u8 txr_count; /* Tx ring count assigned to this vector */
199 /* Helper macros to switch between ints/sec and what the register uses.
200 * And yes, it's the same math going both ways.
202 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
203 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 0)
204 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
206 #define IXGBE_DESC_UNUSED(R) \
207 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
208 (R)->next_to_clean - (R)->next_to_use - 1)
210 #define IXGBE_RX_DESC_ADV(R, i) \
211 (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
212 #define IXGBE_TX_DESC_ADV(R, i) \
213 (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
214 #define IXGBE_TX_CTXTDESC_ADV(R, i) \
215 (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
217 #define IXGBE_MAX_JUMBO_FRAME_SIZE 16128
219 #define OTHER_VECTOR 1
220 #define NON_Q_VECTORS (OTHER_VECTOR)
222 #define MAX_MSIX_Q_VECTORS 16
223 #define MIN_MSIX_Q_VECTORS 2
224 #define MAX_MSIX_COUNT (MAX_MSIX_Q_VECTORS + NON_Q_VECTORS)
225 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)
227 /* board specific private data structure */
228 struct ixgbe_adapter {
229 struct timer_list watchdog_timer;
230 struct vlan_group *vlgrp;
232 struct work_struct reset_task;
233 struct ixgbe_q_vector q_vector[MAX_MSIX_Q_VECTORS];
234 char name[MAX_MSIX_COUNT][IFNAMSIZ + 5];
236 /* Interrupt Throttle Rate */
242 struct ixgbe_ring *tx_ring; /* One per active queue */
247 u32 tx_timeout_count;
251 struct ixgbe_ring *rx_ring; /* One per active queue */
253 u64 hw_csum_rx_error;
258 int num_msix_vectors;
259 struct ixgbe_ring_feature ring_feature[3];
260 struct msix_entry *msix_entries;
263 u32 alloc_rx_page_failed;
264 u32 alloc_rx_buff_failed;
266 /* Some features need tri-state capability,
267 * thus the additional *_CAPABLE flags.
270 #define IXGBE_FLAG_RX_CSUM_ENABLED (u32)(1)
271 #define IXGBE_FLAG_MSI_CAPABLE (u32)(1 << 1)
272 #define IXGBE_FLAG_MSI_ENABLED (u32)(1 << 2)
273 #define IXGBE_FLAG_MSIX_CAPABLE (u32)(1 << 3)
274 #define IXGBE_FLAG_MSIX_ENABLED (u32)(1 << 4)
275 #define IXGBE_FLAG_RX_1BUF_CAPABLE (u32)(1 << 6)
276 #define IXGBE_FLAG_RX_PS_CAPABLE (u32)(1 << 7)
277 #define IXGBE_FLAG_RX_PS_ENABLED (u32)(1 << 8)
278 #define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 9)
279 #define IXGBE_FLAG_DCA_ENABLED (u32)(1 << 10)
280 #define IXGBE_FLAG_DCA_CAPABLE (u32)(1 << 11)
281 #define IXGBE_FLAG_IMIR_ENABLED (u32)(1 << 12)
282 #define IXGBE_FLAG_MQ_CAPABLE (u32)(1 << 13)
283 #define IXGBE_FLAG_RSS_ENABLED (u32)(1 << 16)
284 #define IXGBE_FLAG_RSS_CAPABLE (u32)(1 << 17)
285 #define IXGBE_FLAG_VMDQ_CAPABLE (u32)(1 << 18)
286 #define IXGBE_FLAG_VMDQ_ENABLED (u32)(1 << 19)
287 #define IXGBE_FLAG_NEED_LINK_UPDATE (u32)(1 << 22)
288 #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1 << 23)
290 /* default to trying for four seconds */
291 #define IXGBE_TRY_LINK_TIMEOUT (4 * HZ)
293 /* OS defined structs */
294 struct net_device *netdev;
295 struct pci_dev *pdev;
296 struct net_device_stats net_stats;
298 /* structs defined in ixgbe_hw.h */
301 struct ixgbe_hw_stats stats;
303 /* Interrupt Throttle Rate */
315 unsigned long link_check_timeout;
317 struct work_struct watchdog_task;
330 extern struct ixgbe_info ixgbe_82598_info;
332 extern char ixgbe_driver_name[];
333 extern const char ixgbe_driver_version[];
335 extern int ixgbe_up(struct ixgbe_adapter *adapter);
336 extern void ixgbe_down(struct ixgbe_adapter *adapter);
337 extern void ixgbe_reinit_locked(struct ixgbe_adapter *adapter);
338 extern void ixgbe_reset(struct ixgbe_adapter *adapter);
339 extern void ixgbe_update_stats(struct ixgbe_adapter *adapter);
340 extern void ixgbe_set_ethtool_ops(struct net_device *netdev);
341 extern int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter,
342 struct ixgbe_ring *rxdr);
343 extern int ixgbe_setup_tx_resources(struct ixgbe_adapter *adapter,
344 struct ixgbe_ring *txdr);
346 #endif /* _IXGBE_H_ */