1 /*******************************************************************************
3 Intel 82599 Virtual Function 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/timer.h>
34 #include <linux/netdevice.h>
38 /* wrapper around a pointer to a socket buffer,
39 * so a DMA handle can be stored along with the buffer */
40 struct ixgbevf_tx_buffer
{
43 unsigned long time_stamp
;
49 struct ixgbevf_rx_buffer
{
54 unsigned int page_offset
;
58 struct ixgbevf_adapter
*adapter
; /* backlink */
59 void *desc
; /* descriptor ring memory */
60 dma_addr_t dma
; /* phys. address of descriptor ring */
61 unsigned int size
; /* length in bytes */
62 unsigned int count
; /* amount of descriptors */
63 unsigned int next_to_use
;
64 unsigned int next_to_clean
;
66 int queue_index
; /* needed for multiqueue queue management */
68 struct ixgbevf_tx_buffer
*tx_buffer_info
;
69 struct ixgbevf_rx_buffer
*rx_buffer_info
;
75 unsigned int total_bytes
;
76 unsigned int total_packets
;
78 u16 reg_idx
; /* holds the special value that gets the hardware register
79 * offset associated with this ring, which is different
80 * for DCB and RSS modes */
82 #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
83 /* cpu for tx queue */
87 u64 v_idx
; /* maps directly to the index for this ring in the hardware
88 * vector array, can also be used for finding the bit in EICR
89 * and friends that represents the vector for this ring */
91 u16 work_limit
; /* max work per interrupt */
95 enum ixgbevf_ring_f_enum
{
97 RING_F_ARRAY_SIZE
/* must be last in enum set */
100 struct ixgbevf_ring_feature
{
105 /* How many Rx Buffers do we bundle into one write to the hardware ? */
106 #define IXGBEVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
108 #define MAX_RX_QUEUES 1
109 #define MAX_TX_QUEUES 1
111 #define IXGBEVF_DEFAULT_TXD 1024
112 #define IXGBEVF_DEFAULT_RXD 512
113 #define IXGBEVF_MAX_TXD 4096
114 #define IXGBEVF_MIN_TXD 64
115 #define IXGBEVF_MAX_RXD 4096
116 #define IXGBEVF_MIN_RXD 64
118 /* Supported Rx Buffer Sizes */
119 #define IXGBEVF_RXBUFFER_64 64 /* Used for packet split */
120 #define IXGBEVF_RXBUFFER_128 128 /* Used for packet split */
121 #define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */
122 #define IXGBEVF_RXBUFFER_2048 2048
123 #define IXGBEVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */
125 #define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256
127 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
129 #define IXGBE_TX_FLAGS_CSUM (u32)(1)
130 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
131 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
132 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
133 #define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4)
134 #define IXGBE_TX_FLAGS_FSO (u32)(1 << 5)
135 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
136 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000
137 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16
139 /* MAX_MSIX_Q_VECTORS of these are allocated,
140 * but we only use one per queue-specific vector.
142 struct ixgbevf_q_vector
{
143 struct ixgbevf_adapter
*adapter
;
144 struct napi_struct napi
;
145 DECLARE_BITMAP(rxr_idx
, MAX_RX_QUEUES
); /* Rx ring indices */
146 DECLARE_BITMAP(txr_idx
, MAX_TX_QUEUES
); /* Tx ring indices */
147 u8 rxr_count
; /* Rx ring count assigned to this vector */
148 u8 txr_count
; /* Tx ring count assigned to this vector */
152 int v_idx
; /* vector index in list */
155 /* Helper macros to switch between ints/sec and what the register uses.
156 * And yes, it's the same math going both ways. The lowest value
157 * supported by all of the ixgbe hardware is 8.
159 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
160 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
161 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
163 #define IXGBE_DESC_UNUSED(R) \
164 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
165 (R)->next_to_clean - (R)->next_to_use - 1)
167 #define IXGBE_RX_DESC_ADV(R, i) \
168 (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
169 #define IXGBE_TX_DESC_ADV(R, i) \
170 (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
171 #define IXGBE_TX_CTXTDESC_ADV(R, i) \
172 (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
174 #define IXGBE_MAX_JUMBO_FRAME_SIZE 16128
176 #define OTHER_VECTOR 1
177 #define NON_Q_VECTORS (OTHER_VECTOR)
179 #define MAX_MSIX_Q_VECTORS 2
180 #define MAX_MSIX_COUNT 2
182 #define MIN_MSIX_Q_VECTORS 2
183 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)
185 /* board specific private data structure */
186 struct ixgbevf_adapter
{
187 struct timer_list watchdog_timer
;
188 #ifdef NETIF_F_HW_VLAN_TX
189 struct vlan_group
*vlgrp
;
192 struct work_struct reset_task
;
193 struct ixgbevf_q_vector
*q_vector
[MAX_MSIX_Q_VECTORS
];
194 char name
[MAX_MSIX_COUNT
][IFNAMSIZ
+ 9];
196 /* Interrupt Throttle Rate */
202 struct ixgbevf_ring
*tx_ring
; /* One per active queue */
209 u32 tx_timeout_count
;
213 struct ixgbevf_ring
*rx_ring
; /* One per active queue */
215 int num_rx_pools
; /* == num_rx_queues in 82598 */
216 int num_rx_queues_per_pool
; /* 1 if 82598, can be many if 82599 */
217 u64 hw_csum_rx_error
;
218 u64 hw_rx_no_dma_resources
;
221 int num_msix_vectors
;
222 int max_msix_q_vectors
; /* true count of q_vectors for device */
223 struct ixgbevf_ring_feature ring_feature
[RING_F_ARRAY_SIZE
];
224 struct msix_entry
*msix_entries
;
227 u32 alloc_rx_page_failed
;
228 u32 alloc_rx_buff_failed
;
230 /* Some features need tri-state capability,
231 * thus the additional *_CAPABLE flags.
234 #define IXGBE_FLAG_RX_CSUM_ENABLED (u32)(1)
235 #define IXGBE_FLAG_RX_1BUF_CAPABLE (u32)(1 << 1)
236 #define IXGBE_FLAG_RX_PS_CAPABLE (u32)(1 << 2)
237 #define IXGBE_FLAG_RX_PS_ENABLED (u32)(1 << 3)
238 #define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 4)
239 #define IXGBE_FLAG_IMIR_ENABLED (u32)(1 << 5)
240 #define IXGBE_FLAG_MQ_CAPABLE (u32)(1 << 6)
241 #define IXGBE_FLAG_NEED_LINK_UPDATE (u32)(1 << 7)
242 #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1 << 8)
243 /* OS defined structs */
244 struct net_device
*netdev
;
245 struct pci_dev
*pdev
;
247 /* structs defined in ixgbe_vf.h */
250 struct ixgbevf_hw_stats stats
;
252 /* Interrupt Throttle Rate */
258 unsigned int tx_ring_count
;
259 unsigned int rx_ring_count
;
263 unsigned long link_check_timeout
;
265 struct work_struct watchdog_task
;
266 bool netdev_registered
;
270 enum ixbgevf_state_t
{
276 enum ixgbevf_boards
{
280 extern struct ixgbevf_info ixgbevf_vf_info
;
281 extern struct ixgbe_mac_operations ixgbevf_mbx_ops
;
283 /* needed by ethtool.c */
284 extern char ixgbevf_driver_name
[];
285 extern const char ixgbevf_driver_version
[];
287 extern int ixgbevf_up(struct ixgbevf_adapter
*adapter
);
288 extern void ixgbevf_down(struct ixgbevf_adapter
*adapter
);
289 extern void ixgbevf_reinit_locked(struct ixgbevf_adapter
*adapter
);
290 extern void ixgbevf_reset(struct ixgbevf_adapter
*adapter
);
291 extern void ixgbevf_set_ethtool_ops(struct net_device
*netdev
);
292 extern int ixgbevf_setup_rx_resources(struct ixgbevf_adapter
*,
293 struct ixgbevf_ring
*);
294 extern int ixgbevf_setup_tx_resources(struct ixgbevf_adapter
*,
295 struct ixgbevf_ring
*);
296 extern void ixgbevf_free_rx_resources(struct ixgbevf_adapter
*,
297 struct ixgbevf_ring
*);
298 extern void ixgbevf_free_tx_resources(struct ixgbevf_adapter
*,
299 struct ixgbevf_ring
*);
300 extern void ixgbevf_update_stats(struct ixgbevf_adapter
*adapter
);
302 #ifdef ETHTOOL_OPS_COMPAT
303 extern int ethtool_ioctl(struct ifreq
*ifr
);
306 extern void ixgbe_napi_add_all(struct ixgbevf_adapter
*adapter
);
307 extern void ixgbe_napi_del_all(struct ixgbevf_adapter
*adapter
);
310 extern char *ixgbevf_get_hw_dev_name(struct ixgbe_hw
*hw
);
311 #define hw_dbg(hw, format, arg...) \
312 printk(KERN_DEBUG "%s: " format, ixgbevf_get_hw_dev_name(hw), ##arg)
314 #define hw_dbg(hw, format, arg...) do {} while (0)
317 #endif /* _IXGBEVF_H_ */