ixgbevf: Driver main and ethool interface module and main header

These modules and header contain the Linux OS network interface code and core
interrupt and network send/receive handlers.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 318 insertions, 0 deletions

diff --git a/drivers/net/ixgbevf/ixgbevf.h b/drivers/net/ixgbevf/ixgbevf.h
new file mode 100644
index 000000000000..f7015efbff05
--- /dev/null
+++ b/drivers/net/ixgbevf/ixgbevf.h
@@ -0,0 +1,318 @@
+/*******************************************************************************
+
+  Intel 82599 Virtual Function driver
+  Copyright(c) 1999 - 2009 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/timer.h>
+#include <linux/io.h>
+#include <linux/netdevice.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;
+        u16 length;
+        u16 next_to_watch;
+        u16 mapped_as_page;
+};
+
+struct ixgbevf_rx_buffer {
+        struct sk_buff *skb;
+        dma_addr_t dma;
+        struct page *page;
+        dma_addr_t page_dma;
+        unsigned int page_offset;
+};
+
+struct ixgbevf_ring {
+        struct ixgbevf_adapter *adapter;  /* backlink */
+        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;
+        };
+
+        u16 head;
+        u16 tail;
+
+        unsigned int total_bytes;
+        unsigned int total_packets;
+
+        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 */
+
+#if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
+        /* cpu for tx queue */
+        int cpu;
+#endif
+
+        u64 v_idx; /* maps directly to the index for this ring in the hardware
+                    * vector array, can also be used for finding the bit in EICR
+                    * and friends that represents the vector for this ring */
+
+        u16 work_limit;                /* max work per interrupt */
+        u16 rx_buf_len;
+};
+
+enum ixgbevf_ring_f_enum {
+        RING_F_NONE = 0,
+        RING_F_ARRAY_SIZE      /* must be last in enum set */
+};
+
+struct ixgbevf_ring_feature {
+        int indices;
+        int mask;
+};
+
+/* 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 1
+#define MAX_TX_QUEUES 1
+
+#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_64    64     /* Used for packet split */
+#define IXGBEVF_RXBUFFER_128   128    /* Used for packet split */
+#define IXGBEVF_RXBUFFER_256   256    /* Used for packet split */
+#define IXGBEVF_RXBUFFER_2048  2048
+#define IXGBEVF_MAX_RXBUFFER   16384  /* largest size for single descriptor */
+
+#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
+
+/* 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;
+        struct napi_struct napi;
+        DECLARE_BITMAP(rxr_idx, MAX_RX_QUEUES); /* Rx ring indices */
+        DECLARE_BITMAP(txr_idx, MAX_TX_QUEUES); /* Tx ring indices */
+        u8 rxr_count;     /* Rx ring count assigned to this vector */
+        u8 txr_count;     /* Tx ring count assigned to this vector */
+        u8 tx_itr;
+        u8 rx_itr;
+        u32 eitr;
+        int v_idx;        /* vector index in list */
+};
+
+/* 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 IXGBE_RX_DESC_ADV(R, i)     \
+        (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
+#define IXGBE_TX_DESC_ADV(R, i)     \
+        (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
+#define IXGBE_TX_CTXTDESC_ADV(R, i)         \
+        (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
+
+#define IXGBE_MAX_JUMBO_FRAME_SIZE        16128
+
+#define OTHER_VECTOR 1
+#define NON_Q_VECTORS (OTHER_VECTOR)
+
+#define MAX_MSIX_Q_VECTORS 2
+#define MAX_MSIX_COUNT 2
+
+#define MIN_MSIX_Q_VECTORS 2
+#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)
+
+/* board specific private data structure */
+struct ixgbevf_adapter {
+        struct timer_list watchdog_timer;
+#ifdef NETIF_F_HW_VLAN_TX
+        struct vlan_group *vlgrp;
+#endif
+        u16 bd_number;
+        struct work_struct reset_task;
+        struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
+        char name[MAX_MSIX_COUNT][IFNAMSIZ + 9];
+
+        /* Interrupt Throttle Rate */
+        u32 itr_setting;
+        u16 eitr_low;
+        u16 eitr_high;
+
+        /* 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;
+        bool detect_tx_hung;
+
+        /* RX */
+        struct ixgbevf_ring *rx_ring;   /* One per active queue */
+        int num_rx_queues;
+        int num_rx_pools;               /* == num_rx_queues in 82598 */
+        int num_rx_queues_per_pool;     /* 1 if 82598, can be many if 82599 */
+        u64 hw_csum_rx_error;
+        u64 hw_rx_no_dma_resources;
+        u64 hw_csum_rx_good;
+        u64 non_eop_descs;
+        int num_msix_vectors;
+        int max_msix_q_vectors;         /* true count of q_vectors for device */
+        struct ixgbevf_ring_feature ring_feature[RING_F_ARRAY_SIZE];
+        struct msix_entry *msix_entries;
+
+        u64 rx_hdr_split;
+        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_RX_CSUM_ENABLED              (u32)(1)
+#define IXGBE_FLAG_RX_1BUF_CAPABLE              (u32)(1 << 1)
+#define IXGBE_FLAG_RX_PS_CAPABLE                (u32)(1 << 2)
+#define IXGBE_FLAG_RX_PS_ENABLED                (u32)(1 << 3)
+#define IXGBE_FLAG_IN_NETPOLL                   (u32)(1 << 4)
+#define IXGBE_FLAG_IMIR_ENABLED                 (u32)(1 << 5)
+#define IXGBE_FLAG_MQ_CAPABLE                   (u32)(1 << 6)
+#define IXGBE_FLAG_NEED_LINK_UPDATE             (u32)(1 << 7)
+#define IXGBE_FLAG_IN_WATCHDOG_TASK             (u32)(1 << 8)
+        /* OS defined structs */
+        struct net_device *netdev;
+        struct pci_dev *pdev;
+        struct net_device_stats net_stats;
+
+        /* 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;
+        u32 *config_space;
+        u64 tx_busy;
+        unsigned int tx_ring_count;
+        unsigned int rx_ring_count;
+
+        u32 link_speed;
+        bool link_up;
+        unsigned long link_check_timeout;
+
+        struct work_struct watchdog_task;
+        bool netdev_registered;
+        bool dev_closed;
+};
+
+enum ixbgevf_state_t {
+        __IXGBEVF_TESTING,
+        __IXGBEVF_RESETTING,
+        __IXGBEVF_DOWN
+};
+
+enum ixgbevf_boards {
+        board_82599_vf,
+};
+
+extern struct ixgbevf_info ixgbevf_vf_info;
+extern struct ixgbe_mac_operations ixgbevf_mbx_ops;
+
+/* needed by ethtool.c */
+extern char ixgbevf_driver_name[];
+extern const char ixgbevf_driver_version[];
+
+extern int 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);
+
+#ifdef ETHTOOL_OPS_COMPAT
+extern int ethtool_ioctl(struct ifreq *ifr);
+
+#endif
+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_ */