diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf/ixgbevf.h')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h new file mode 100644 index 00000000..fff0d986 --- /dev/null +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h @@ -0,0 +1,311 @@ +/******************************************************************************* + + Intel 82599 Virtual Function driver + Copyright(c) 1999 - 2012 Intel Corporation. + + This program is free software; you can redistribute it and/or modify it + under the terms and conditions of the GNU General Public License, + version 2, as published by the Free Software Foundation. + + This program is distributed in the hope it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + more details. + + You should have received a copy of the GNU General Public License along with + this program; if not, write to the Free Software Foundation, Inc., + 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + + The full GNU General Public License is included in this distribution in + the file called "COPYING". + + Contact Information: + e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> + Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + +*******************************************************************************/ + +#ifndef _IXGBEVF_H_ +#define _IXGBEVF_H_ + +#include <linux/types.h> +#include <linux/bitops.h> +#include <linux/timer.h> +#include <linux/io.h> +#include <linux/netdevice.h> +#include <linux/if_vlan.h> +#include <linux/u64_stats_sync.h> + +#include "vf.h" + +/* wrapper around a pointer to a socket buffer, + * so a DMA handle can be stored along with the buffer */ +struct ixgbevf_tx_buffer { + struct sk_buff *skb; + dma_addr_t dma; + unsigned long time_stamp; + union ixgbe_adv_tx_desc *next_to_watch; + u16 length; + u16 mapped_as_page; +}; + +struct ixgbevf_rx_buffer { + struct sk_buff *skb; + dma_addr_t dma; +}; + +struct ixgbevf_ring { + struct ixgbevf_ring *next; + struct net_device *netdev; + struct device *dev; + void *desc; /* descriptor ring memory */ + dma_addr_t dma; /* phys. address of descriptor ring */ + unsigned int size; /* length in bytes */ + unsigned int count; /* amount of descriptors */ + unsigned int next_to_use; + unsigned int next_to_clean; + + int queue_index; /* needed for multiqueue queue management */ + union { + struct ixgbevf_tx_buffer *tx_buffer_info; + struct ixgbevf_rx_buffer *rx_buffer_info; + }; + + u64 total_bytes; + u64 total_packets; + struct u64_stats_sync syncp; + u64 hw_csum_rx_error; + u64 hw_csum_rx_good; + + u16 head; + u16 tail; + + u16 reg_idx; /* holds the special value that gets the hardware register + * offset associated with this ring, which is different + * for DCB and RSS modes */ + + u16 rx_buf_len; +}; + +/* How many Rx Buffers do we bundle into one write to the hardware ? */ +#define IXGBEVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ + +#define MAX_RX_QUEUES IXGBE_VF_MAX_RX_QUEUES +#define MAX_TX_QUEUES IXGBE_VF_MAX_TX_QUEUES + +#define IXGBEVF_DEFAULT_TXD 1024 +#define IXGBEVF_DEFAULT_RXD 512 +#define IXGBEVF_MAX_TXD 4096 +#define IXGBEVF_MIN_TXD 64 +#define IXGBEVF_MAX_RXD 4096 +#define IXGBEVF_MIN_RXD 64 + +/* Supported Rx Buffer Sizes */ +#define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */ +#define IXGBEVF_RXBUFFER_2K 2048 +#define IXGBEVF_RXBUFFER_4K 4096 +#define IXGBEVF_RXBUFFER_8K 8192 +#define IXGBEVF_RXBUFFER_10K 10240 + +#define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256 + +#define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) + +#define IXGBE_TX_FLAGS_CSUM (u32)(1) +#define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1) +#define IXGBE_TX_FLAGS_TSO (u32)(1 << 2) +#define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3) +#define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4) +#define IXGBE_TX_FLAGS_FSO (u32)(1 << 5) +#define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000 +#define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000 +#define IXGBE_TX_FLAGS_VLAN_SHIFT 16 + +struct ixgbevf_ring_container { + struct ixgbevf_ring *ring; /* pointer to linked list of rings */ + unsigned int total_bytes; /* total bytes processed this int */ + unsigned int total_packets; /* total packets processed this int */ + u8 count; /* total number of rings in vector */ + u8 itr; /* current ITR setting for ring */ +}; + +/* iterator for handling rings in ring container */ +#define ixgbevf_for_each_ring(pos, head) \ + for (pos = (head).ring; pos != NULL; pos = pos->next) + +/* MAX_MSIX_Q_VECTORS of these are allocated, + * but we only use one per queue-specific vector. + */ +struct ixgbevf_q_vector { + struct ixgbevf_adapter *adapter; + u16 v_idx; /* index of q_vector within array, also used for + * finding the bit in EICR and friends that + * represents the vector for this ring */ + u16 itr; /* Interrupt throttle rate written to EITR */ + struct napi_struct napi; + struct ixgbevf_ring_container rx, tx; + char name[IFNAMSIZ + 9]; +}; + +/* + * microsecond values for various ITR rates shifted by 2 to fit itr register + * with the first 3 bits reserved 0 + */ +#define IXGBE_MIN_RSC_ITR 24 +#define IXGBE_100K_ITR 40 +#define IXGBE_20K_ITR 200 +#define IXGBE_10K_ITR 400 +#define IXGBE_8K_ITR 500 + +/* Helper macros to switch between ints/sec and what the register uses. + * And yes, it's the same math going both ways. The lowest value + * supported by all of the ixgbe hardware is 8. + */ +#define EITR_INTS_PER_SEC_TO_REG(_eitr) \ + ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8) +#define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG + +#define IXGBE_DESC_UNUSED(R) \ + ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ + (R)->next_to_clean - (R)->next_to_use - 1) + +#define IXGBEVF_RX_DESC(R, i) \ + (&(((union ixgbe_adv_rx_desc *)((R)->desc))[i])) +#define IXGBEVF_TX_DESC(R, i) \ + (&(((union ixgbe_adv_tx_desc *)((R)->desc))[i])) +#define IXGBEVF_TX_CTXTDESC(R, i) \ + (&(((struct ixgbe_adv_tx_context_desc *)((R)->desc))[i])) + +#define IXGBE_MAX_JUMBO_FRAME_SIZE 9728 /* Maximum Supported Size 9.5KB */ + +#define OTHER_VECTOR 1 +#define NON_Q_VECTORS (OTHER_VECTOR) + +#define MAX_MSIX_Q_VECTORS 2 + +#define MIN_MSIX_Q_VECTORS 1 +#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS) + +/* board specific private data structure */ +struct ixgbevf_adapter { + struct timer_list watchdog_timer; + unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; + u16 bd_number; + struct work_struct reset_task; + struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS]; + + /* Interrupt Throttle Rate */ + u16 rx_itr_setting; + u16 tx_itr_setting; + + /* interrupt masks */ + u32 eims_enable_mask; + u32 eims_other; + + /* TX */ + struct ixgbevf_ring *tx_ring; /* One per active queue */ + int num_tx_queues; + u64 restart_queue; + u64 hw_csum_tx_good; + u64 lsc_int; + u64 hw_tso_ctxt; + u64 hw_tso6_ctxt; + u32 tx_timeout_count; + + /* RX */ + struct ixgbevf_ring *rx_ring; /* One per active queue */ + int num_rx_queues; + u64 hw_csum_rx_error; + u64 hw_rx_no_dma_resources; + u64 hw_csum_rx_good; + u64 non_eop_descs; + int num_msix_vectors; + struct msix_entry *msix_entries; + + u32 alloc_rx_page_failed; + u32 alloc_rx_buff_failed; + + /* Some features need tri-state capability, + * thus the additional *_CAPABLE flags. + */ + u32 flags; +#define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1) +#define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 1) + + /* OS defined structs */ + struct net_device *netdev; + struct pci_dev *pdev; + + /* structs defined in ixgbe_vf.h */ + struct ixgbe_hw hw; + u16 msg_enable; + struct ixgbevf_hw_stats stats; + u64 zero_base; + /* Interrupt Throttle Rate */ + u32 eitr_param; + + unsigned long state; + u64 tx_busy; + unsigned int tx_ring_count; + unsigned int rx_ring_count; + + u32 link_speed; + bool link_up; + + struct work_struct watchdog_task; + + spinlock_t mbx_lock; +}; + +enum ixbgevf_state_t { + __IXGBEVF_TESTING, + __IXGBEVF_RESETTING, + __IXGBEVF_DOWN +}; + +struct ixgbevf_cb { + struct sk_buff *prev; +}; +#define IXGBE_CB(skb) ((struct ixgbevf_cb *)(skb)->cb) + +enum ixgbevf_boards { + board_82599_vf, + board_X540_vf, +}; + +extern const struct ixgbevf_info ixgbevf_82599_vf_info; +extern const struct ixgbevf_info ixgbevf_X540_vf_info; +extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops; + +/* needed by ethtool.c */ +extern const char ixgbevf_driver_name[]; +extern const char ixgbevf_driver_version[]; + +extern void ixgbevf_up(struct ixgbevf_adapter *adapter); +extern void ixgbevf_down(struct ixgbevf_adapter *adapter); +extern void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter); +extern void ixgbevf_reset(struct ixgbevf_adapter *adapter); +extern void ixgbevf_set_ethtool_ops(struct net_device *netdev); +extern int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *, + struct ixgbevf_ring *); +extern int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *, + struct ixgbevf_ring *); +extern void ixgbevf_free_rx_resources(struct ixgbevf_adapter *, + struct ixgbevf_ring *); +extern void ixgbevf_free_tx_resources(struct ixgbevf_adapter *, + struct ixgbevf_ring *); +extern void ixgbevf_update_stats(struct ixgbevf_adapter *adapter); +extern int ethtool_ioctl(struct ifreq *ifr); + +extern void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter); +extern void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter); + +#ifdef DEBUG +extern char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw); +#define hw_dbg(hw, format, arg...) \ + printk(KERN_DEBUG "%s: " format, ixgbevf_get_hw_dev_name(hw), ##arg) +#else +#define hw_dbg(hw, format, arg...) do {} while (0) +#endif + +#endif /* _IXGBEVF_H_ */ |