FreeBSD/Linux Kernel Cross Reference
sys/dev/netif/ixgbe/ixgbe_vf.c

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    /*$FreeBSD: src/sys/dev/ixgbe/ixgbe_vf.c,v 1.3 2012/07/05 20:51:44 jfv Exp $*/
    
    
    #include "ixgbe_api.h"
    #include "ixgbe_type.h"
    #include "ixgbe_vf.h"
    
    #ifndef IXGBE_VFWRITE_REG
    #define IXGBE_VFWRITE_REG IXGBE_WRITE_REG
    #endif
    #ifndef IXGBE_VFREAD_REG
    #define IXGBE_VFREAD_REG IXGBE_READ_REG
    #endif
    
    /**
     *  ixgbe_init_ops_vf - Initialize the pointers for vf
     *  @hw: pointer to hardware structure
     *
     *  This will assign function pointers, adapter-specific functions can
     *  override the assignment of generic function pointers by assigning
     *  their own adapter-specific function pointers.
     *  Does not touch the hardware.
     **/
    s32 ixgbe_init_ops_vf(struct ixgbe_hw *hw)
    {
            /* MAC */
            hw->mac.ops.init_hw = ixgbe_init_hw_vf;
            hw->mac.ops.reset_hw = ixgbe_reset_hw_vf;
            hw->mac.ops.start_hw = ixgbe_start_hw_vf;
            /* Cannot clear stats on VF */
            hw->mac.ops.clear_hw_cntrs = NULL;
            hw->mac.ops.get_media_type = NULL;
            hw->mac.ops.get_mac_addr = ixgbe_get_mac_addr_vf;
            hw->mac.ops.stop_adapter = ixgbe_stop_adapter_vf;
            hw->mac.ops.get_bus_info = NULL;
    
            /* Link */
            hw->mac.ops.setup_link = ixgbe_setup_mac_link_vf;
            hw->mac.ops.check_link = ixgbe_check_mac_link_vf;
            hw->mac.ops.get_link_capabilities = NULL;
    
            /* RAR, Multicast, VLAN */
            hw->mac.ops.set_rar = ixgbe_set_rar_vf;
            hw->mac.ops.set_uc_addr = ixgbevf_set_uc_addr_vf;
            hw->mac.ops.init_rx_addrs = NULL;
            hw->mac.ops.update_mc_addr_list = ixgbe_update_mc_addr_list_vf;
            hw->mac.ops.enable_mc = NULL;
            hw->mac.ops.disable_mc = NULL;
            hw->mac.ops.clear_vfta = NULL;
            hw->mac.ops.set_vfta = ixgbe_set_vfta_vf;
    
            hw->mac.max_tx_queues = 1;
            hw->mac.max_rx_queues = 1;
    
            hw->mbx.ops.init_params = ixgbe_init_mbx_params_vf;
    
            return IXGBE_SUCCESS;
    }
    
    /**
     *  ixgbe_start_hw_vf - Prepare hardware for Tx/Rx
     *  @hw: pointer to hardware structure
     *
     *  Starts the hardware by filling the bus info structure and media type, clears
     *  all on chip counters, initializes receive address registers, multicast
     *  table, VLAN filter table, calls routine to set up link and flow control
     *  settings, and leaves transmit and receive units disabled and uninitialized
    **/
   s32 ixgbe_start_hw_vf(struct ixgbe_hw *hw)
   {
           /* Clear adapter stopped flag */
           hw->adapter_stopped = FALSE;
   
           return IXGBE_SUCCESS;
   }
   
   /**
    *  ixgbe_init_hw_vf - virtual function hardware initialization
    *  @hw: pointer to hardware structure
    *
    *  Initialize the hardware by resetting the hardware and then starting
    *  the hardware
    **/
   s32 ixgbe_init_hw_vf(struct ixgbe_hw *hw)
   {
           s32 status = hw->mac.ops.start_hw(hw);
   
           hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
   
           return status;
   }
   
   /**
    *  ixgbe_reset_hw_vf - Performs hardware reset
    *  @hw: pointer to hardware structure
    *
    *  Resets the hardware by reseting the transmit and receive units, masks and
    *  clears all interrupts.
    **/
   s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
   {
           struct ixgbe_mbx_info *mbx = &hw->mbx;
           u32 timeout = IXGBE_VF_INIT_TIMEOUT;
           s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
           u32 ctrl, msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
           u8 *addr = (u8 *)(&msgbuf[1]);
   
           DEBUGFUNC("ixgbevf_reset_hw_vf");
   
           /* Call adapter stop to disable tx/rx and clear interrupts */
           hw->mac.ops.stop_adapter(hw);
   
           DEBUGOUT("Issuing a function level reset to MAC\n");
   
           ctrl = IXGBE_VFREAD_REG(hw, IXGBE_VFCTRL) | IXGBE_CTRL_RST;
           IXGBE_VFWRITE_REG(hw, IXGBE_VFCTRL, ctrl);
           IXGBE_WRITE_FLUSH(hw);
   
           msec_delay(50);
   
           /* we cannot reset while the RSTI / RSTD bits are asserted */
           while (!mbx->ops.check_for_rst(hw, 0) && timeout) {
                   timeout--;
                   usec_delay(5);
           }
   
           if (timeout) {
                   /* mailbox timeout can now become active */
                   mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
   
                   msgbuf[0] = IXGBE_VF_RESET;
                   mbx->ops.write_posted(hw, msgbuf, 1, 0);
   
                   msec_delay(10);
   
                   /*
                    * set our "perm_addr" based on info provided by PF
                    * also set up the mc_filter_type which is piggy backed
                    * on the mac address in word 3
                    */
                   ret_val = mbx->ops.read_posted(hw, msgbuf,
                                                  IXGBE_VF_PERMADDR_MSG_LEN, 0);
                   if (!ret_val) {
                           if (msgbuf[0] == (IXGBE_VF_RESET |
                                             IXGBE_VT_MSGTYPE_ACK)) {
                                   memcpy(hw->mac.perm_addr, addr,
                                          IXGBE_ETH_LENGTH_OF_ADDRESS);
                                   hw->mac.mc_filter_type =
                                           msgbuf[IXGBE_VF_MC_TYPE_WORD];
                           } else {
                                   ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
                           }
                   }
           }
   
           return ret_val;
   }
   
   /**
    *  ixgbe_stop_adapter_vf - Generic stop Tx/Rx units
    *  @hw: pointer to hardware structure
    *
    *  Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
    *  disables transmit and receive units. The adapter_stopped flag is used by
    *  the shared code and drivers to determine if the adapter is in a stopped
    *  state and should not touch the hardware.
    **/
   s32 ixgbe_stop_adapter_vf(struct ixgbe_hw *hw)
   {
           u32 reg_val;
           u16 i;
   
           /*
            * Set the adapter_stopped flag so other driver functions stop touching
            * the hardware
            */
           hw->adapter_stopped = TRUE;
   
           /* Clear interrupt mask to stop from interrupts being generated */
           IXGBE_VFWRITE_REG(hw, IXGBE_VTEIMC, IXGBE_VF_IRQ_CLEAR_MASK);
   
           /* Clear any pending interrupts, flush previous writes */
           IXGBE_VFREAD_REG(hw, IXGBE_VTEICR);
   
           /* Disable the transmit unit.  Each queue must be disabled. */
           for (i = 0; i < hw->mac.max_tx_queues; i++)
                   IXGBE_VFWRITE_REG(hw, IXGBE_VFTXDCTL(i), IXGBE_TXDCTL_SWFLSH);
   
           /* Disable the receive unit by stopping each queue */
           for (i = 0; i < hw->mac.max_rx_queues; i++) {
                   reg_val = IXGBE_VFREAD_REG(hw, IXGBE_VFRXDCTL(i));
                   reg_val &= ~IXGBE_RXDCTL_ENABLE;
                   IXGBE_VFWRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
           }
   
           /* flush all queues disables */
           IXGBE_WRITE_FLUSH(hw);
           msec_delay(2);
   
           return IXGBE_SUCCESS;
   }
   
   /**
    *  ixgbe_mta_vector - Determines bit-vector in multicast table to set
    *  @hw: pointer to hardware structure
    *  @mc_addr: the multicast address
    *
    *  Extracts the 12 bits, from a multicast address, to determine which
    *  bit-vector to set in the multicast table. The hardware uses 12 bits, from
    *  incoming rx multicast addresses, to determine the bit-vector to check in
    *  the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
    *  by the MO field of the MCSTCTRL. The MO field is set during initialization
    *  to mc_filter_type.
    **/
   static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
   {
           u32 vector = 0;
   
           switch (hw->mac.mc_filter_type) {
           case 0:   /* use bits [47:36] of the address */
                   vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
                   break;
           case 1:   /* use bits [46:35] of the address */
                   vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
                   break;
           case 2:   /* use bits [45:34] of the address */
                   vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
                   break;
           case 3:   /* use bits [43:32] of the address */
                   vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
                   break;
           default:  /* Invalid mc_filter_type */
                   DEBUGOUT("MC filter type param set incorrectly\n");
                   ASSERT(0);
                   break;
           }
   
           /* vector can only be 12-bits or boundary will be exceeded */
           vector &= 0xFFF;
           return vector;
   }
   
   /**
    *  ixgbe_set_rar_vf - set device MAC address
    *  @hw: pointer to hardware structure
    *  @index: Receive address register to write
    *  @addr: Address to put into receive address register
    *  @vmdq: VMDq "set" or "pool" index
    *  @enable_addr: set flag that address is active
    **/
   s32 ixgbe_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
                        u32 enable_addr)
   {
           struct ixgbe_mbx_info *mbx = &hw->mbx;
           u32 msgbuf[3];
           u8 *msg_addr = (u8 *)(&msgbuf[1]);
           s32 ret_val;
           UNREFERENCED_3PARAMETER(vmdq, enable_addr, index);
   
           memset(msgbuf, 0, 12);
           msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
           memcpy(msg_addr, addr, 6);
           ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
   
           if (!ret_val)
                   ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
   
           msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
   
           /* if nacked the address was rejected, use "perm_addr" */
           if (!ret_val &&
               (msgbuf[0] == (IXGBE_VF_SET_MAC_ADDR | IXGBE_VT_MSGTYPE_NACK)))
                   ixgbe_get_mac_addr_vf(hw, hw->mac.addr);
   
           return ret_val;
   }
   
   /**
    *  ixgbe_update_mc_addr_list_vf - Update Multicast addresses
    *  @hw: pointer to the HW structure
    *  @mc_addr_list: array of multicast addresses to program
    *  @mc_addr_count: number of multicast addresses to program
    *  @next: caller supplied function to return next address in list
    *
    *  Updates the Multicast Table Array.
    **/
   s32 ixgbe_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list,
                                    u32 mc_addr_count, ixgbe_mc_addr_itr next,
                                    bool clear)
   {
           struct ixgbe_mbx_info *mbx = &hw->mbx;
           u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
           u16 *vector_list = (u16 *)&msgbuf[1];
           u32 vector;
           u32 cnt, i;
           u32 vmdq;
   
           UNREFERENCED_1PARAMETER(clear);
   
           DEBUGFUNC("ixgbe_update_mc_addr_list_vf");
   
           /* Each entry in the list uses 1 16 bit word.  We have 30
            * 16 bit words available in our HW msg buffer (minus 1 for the
            * msg type).  That's 30 hash values if we pack 'em right.  If
            * there are more than 30 MC addresses to add then punt the
            * extras for now and then add code to handle more than 30 later.
            * It would be unusual for a server to request that many multi-cast
            * addresses except for in large enterprise network environments.
            */
   
           DEBUGOUT1("MC Addr Count = %d\n", mc_addr_count);
   
           cnt = (mc_addr_count > 30) ? 30 : mc_addr_count;
           msgbuf[0] = IXGBE_VF_SET_MULTICAST;
           msgbuf[0] |= cnt << IXGBE_VT_MSGINFO_SHIFT;
   
           for (i = 0; i < cnt; i++) {
                   vector = ixgbe_mta_vector(hw, next(hw, &mc_addr_list, &vmdq));
                   DEBUGOUT1("Hash value = 0x%03X\n", vector);
                   vector_list[i] = (u16)vector;
           }
   
           return mbx->ops.write_posted(hw, msgbuf, IXGBE_VFMAILBOX_SIZE, 0);
   }
   
   /**
    *  ixgbe_set_vfta_vf - Set/Unset vlan filter table address
    *  @hw: pointer to the HW structure
    *  @vlan: 12 bit VLAN ID
    *  @vind: unused by VF drivers
    *  @vlan_on: if TRUE then set bit, else clear bit
    **/
   s32 ixgbe_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, bool vlan_on)
   {
           struct ixgbe_mbx_info *mbx = &hw->mbx;
           u32 msgbuf[2];
           s32 ret_val;
           UNREFERENCED_1PARAMETER(vind);
   
           msgbuf[0] = IXGBE_VF_SET_VLAN;
           msgbuf[1] = vlan;
           /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */
           msgbuf[0] |= vlan_on << IXGBE_VT_MSGINFO_SHIFT;
   
           ret_val = mbx->ops.write_posted(hw, msgbuf, 2, 0);
           if (!ret_val)
                   ret_val = mbx->ops.read_posted(hw, msgbuf, 1, 0);
   
           if (!ret_val && (msgbuf[0] & IXGBE_VT_MSGTYPE_ACK))
                   return IXGBE_SUCCESS;
   
           return ret_val | (msgbuf[0] & IXGBE_VT_MSGTYPE_NACK);
   }
   
   /**
    *  ixgbe_get_num_of_tx_queues_vf - Get number of TX queues
    *  @hw: pointer to hardware structure
    *
    *  Returns the number of transmit queues for the given adapter.
    **/
   u32 ixgbe_get_num_of_tx_queues_vf(struct ixgbe_hw *hw)
   {
           UNREFERENCED_1PARAMETER(hw);
           return IXGBE_VF_MAX_TX_QUEUES;
   }
   
   /**
    *  ixgbe_get_num_of_rx_queues_vf - Get number of RX queues
    *  @hw: pointer to hardware structure
    *
    *  Returns the number of receive queues for the given adapter.
    **/
   u32 ixgbe_get_num_of_rx_queues_vf(struct ixgbe_hw *hw)
   {
           UNREFERENCED_1PARAMETER(hw);
           return IXGBE_VF_MAX_RX_QUEUES;
   }
   
   /**
    *  ixgbe_get_mac_addr_vf - Read device MAC address
    *  @hw: pointer to the HW structure
    **/
   s32 ixgbe_get_mac_addr_vf(struct ixgbe_hw *hw, u8 *mac_addr)
   {
           int i;
   
           for (i = 0; i < IXGBE_ETH_LENGTH_OF_ADDRESS; i++)
                   mac_addr[i] = hw->mac.perm_addr[i];
   
           return IXGBE_SUCCESS;
   }
   
   s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
   {
           struct ixgbe_mbx_info *mbx = &hw->mbx;
           u32 msgbuf[3];
           u8 *msg_addr = (u8 *)(&msgbuf[1]);
           s32 ret_val;
   
           memset(msgbuf, 0, sizeof(msgbuf));
           /*
            * If index is one then this is the start of a new list and needs
            * indication to the PF so it can do it's own list management.
            * If it is zero then that tells the PF to just clear all of
            * this VF's macvlans and there is no new list.
            */
           msgbuf[0] |= index << IXGBE_VT_MSGINFO_SHIFT;
           msgbuf[0] |= IXGBE_VF_SET_MACVLAN;
           if (addr)
                   memcpy(msg_addr, addr, 6);
           ret_val = mbx->ops.write_posted(hw, msgbuf, 3, 0);
   
           if (!ret_val)
                   ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0);
   
           msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
   
           if (!ret_val)
                   if (msgbuf[0] == (IXGBE_VF_SET_MACVLAN | IXGBE_VT_MSGTYPE_NACK))
                           ret_val = IXGBE_ERR_OUT_OF_MEM;
   
           return ret_val;
   }
   
   /**
    *  ixgbe_setup_mac_link_vf - Setup MAC link settings
    *  @hw: pointer to hardware structure
    *  @speed: new link speed
    *  @autoneg: TRUE if autonegotiation enabled
    *  @autoneg_wait_to_complete: TRUE when waiting for completion is needed
    *
    *  Set the link speed in the AUTOC register and restarts link.
    **/
   s32 ixgbe_setup_mac_link_vf(struct ixgbe_hw *hw,
                               ixgbe_link_speed speed, bool autoneg,
                               bool autoneg_wait_to_complete)
   {
           UNREFERENCED_4PARAMETER(hw, speed, autoneg, autoneg_wait_to_complete);
           return IXGBE_SUCCESS;
   }
   
   /**
    *  ixgbe_check_mac_link_vf - Get link/speed status
    *  @hw: pointer to hardware structure
    *  @speed: pointer to link speed
    *  @link_up: TRUE is link is up, FALSE otherwise
    *  @autoneg_wait_to_complete: TRUE when waiting for completion is needed
    *
    *  Reads the links register to determine if link is up and the current speed
    **/
   s32 ixgbe_check_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
                               bool *link_up, bool autoneg_wait_to_complete)
   {
           u32 links_reg;
           UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);
   
           if (!(hw->mbx.ops.check_for_rst(hw, 0))) {
                   *link_up = FALSE;
                   *speed = 0;
                   return -1;
           }
   
           links_reg = IXGBE_VFREAD_REG(hw, IXGBE_VFLINKS);
   
           if (links_reg & IXGBE_LINKS_UP)
                   *link_up = TRUE;
           else
                   *link_up = FALSE;
   
           switch (links_reg & IXGBE_LINKS_SPEED_10G_82599) {
           case IXGBE_LINKS_SPEED_10G_82599:
                   *speed = IXGBE_LINK_SPEED_10GB_FULL;
                   break;
           case IXGBE_LINKS_SPEED_1G_82599:
                   *speed = IXGBE_LINK_SPEED_1GB_FULL;
                   break;
           case IXGBE_LINKS_SPEED_100_82599:
                   *speed = IXGBE_LINK_SPEED_100_FULL;
                   break;
           }
   
           return IXGBE_SUCCESS;
   }
   

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