/** * e1000_init_mac_params_vf - Inits MAC params * @hw: pointer to the HW structure
**/ static s32 e1000_init_mac_params_vf(struct e1000_hw *hw)
{ struct e1000_mac_info *mac = &hw->mac;
/* VF's have no MTA Registers - PF feature only */
mac->mta_reg_count = 128; /* VF's have no access to RAR entries */
mac->rar_entry_count = 1;
/* Function pointers */ /* reset */
mac->ops.reset_hw = e1000_reset_hw_vf; /* hw initialization */
mac->ops.init_hw = e1000_init_hw_vf; /* check for link */
mac->ops.check_for_link = e1000_check_for_link_vf; /* link info */
mac->ops.get_link_up_info = e1000_get_link_up_info_vf; /* multicast address update */
mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_vf; /* set mac address */
mac->ops.rar_set = e1000_rar_set_vf; /* read mac address */
mac->ops.read_mac_addr = e1000_read_mac_addr_vf; /* set mac filter */
mac->ops.set_uc_addr = e1000_set_uc_addr_vf; /* set vlan filter table array */
mac->ops.set_vfta = e1000_set_vfta_vf;
return E1000_SUCCESS;
}
/** * e1000_init_function_pointers_vf - Inits function pointers * @hw: pointer to the HW structure
**/ void e1000_init_function_pointers_vf(struct e1000_hw *hw)
{
hw->mac.ops.init_params = e1000_init_mac_params_vf;
hw->mbx.ops.init_params = e1000_init_mbx_params_vf;
}
/** * e1000_get_link_up_info_vf - Gets link info. * @hw: pointer to the HW structure * @speed: pointer to 16 bit value to store link speed. * @duplex: pointer to 16 bit value to store duplex. * * Since we cannot read the PHY and get accurate link info, we must rely upon * the status register's data which is often stale and inaccurate.
**/ static s32 e1000_get_link_up_info_vf(struct e1000_hw *hw, u16 *speed,
u16 *duplex)
{
s32 status;
/** * e1000_reset_hw_vf - Resets the HW * @hw: pointer to the HW structure * * VF's provide a function level reset. This is done using bit 26 of ctrl_reg. * This is all the reset we can perform on a VF.
**/ static s32 e1000_reset_hw_vf(struct e1000_hw *hw)
{ struct e1000_mbx_info *mbx = &hw->mbx;
u32 timeout = E1000_VF_INIT_TIMEOUT;
u32 ret_val = -E1000_ERR_MAC_INIT;
u32 msgbuf[3];
u8 *addr = (u8 *)(&msgbuf[1]);
u32 ctrl;
/* set our "perm_addr" based on info provided by PF */
ret_val = mbx->ops.read_posted(hw, msgbuf, 3); if (!ret_val) { switch (msgbuf[0]) { case E1000_VF_RESET | E1000_VT_MSGTYPE_ACK:
memcpy(hw->mac.perm_addr, addr, ETH_ALEN); break; case E1000_VF_RESET | E1000_VT_MSGTYPE_NACK:
eth_zero_addr(hw->mac.perm_addr); break; default:
ret_val = -E1000_ERR_MAC_INIT;
}
}
}
return ret_val;
}
/** * e1000_init_hw_vf - Inits the HW * @hw: pointer to the HW structure * * Not much to do here except clear the PF Reset indication if there is one.
**/ static s32 e1000_init_hw_vf(struct e1000_hw *hw)
{ /* attempt to set and restore our mac address */
e1000_rar_set_vf(hw, hw->mac.addr, 0);
return E1000_SUCCESS;
}
/** * e1000_hash_mc_addr_vf - Generate a multicast hash value * @hw: pointer to the HW structure * @mc_addr: pointer to a multicast address * * Generates a multicast address hash value which is used to determine * the multicast filter table array address and new table value. See * e1000_mta_set_generic()
**/ static u32 e1000_hash_mc_addr_vf(struct e1000_hw *hw, u8 *mc_addr)
{
u32 hash_value, hash_mask;
u8 bit_shift = 0;
/* Register count multiplied by bits per register */
hash_mask = (hw->mac.mta_reg_count * 32) - 1;
/* The bit_shift is the number of left-shifts * where 0xFF would still fall within the hash mask.
*/ while (hash_mask >> bit_shift != 0xFF)
bit_shift++;
/** * e1000_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 * @rar_used_count: the first RAR register free to program * @rar_count: total number of supported Receive Address Registers * * Updates the Receive Address Registers and Multicast Table Array. * The caller must have a packed mc_addr_list of multicast addresses. * The parameter rar_count will usually be hw->mac.rar_entry_count * unless there are workarounds that change this.
**/ staticvoid e1000_update_mc_addr_list_vf(struct e1000_hw *hw,
u8 *mc_addr_list, u32 mc_addr_count,
u32 rar_used_count, u32 rar_count)
{ struct e1000_mbx_info *mbx = &hw->mbx;
u32 msgbuf[E1000_VFMAILBOX_SIZE];
u16 *hash_list = (u16 *)&msgbuf[1];
u32 hash_value;
u32 cnt, i;
s32 ret_val;
/* 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.
*/
/** * e1000_set_vfta_vf - Set/Unset vlan filter table address * @hw: pointer to the HW structure * @vid: determines the vfta register and bit to set/unset * @set: if true then set bit, else clear bit
**/ static s32 e1000_set_vfta_vf(struct e1000_hw *hw, u16 vid, bool set)
{ struct e1000_mbx_info *mbx = &hw->mbx;
u32 msgbuf[2];
s32 err;
msgbuf[0] = E1000_VF_SET_VLAN;
msgbuf[1] = vid; /* Setting the 8 bit field MSG INFO to true indicates "add" */ if (set)
msgbuf[0] |= BIT(E1000_VT_MSGINFO_SHIFT);
mbx->ops.write_posted(hw, msgbuf, 2);
err = mbx->ops.read_posted(hw, msgbuf, 2);
msgbuf[0] &= ~E1000_VT_MSGTYPE_CTS;
/* if nacked the vlan was rejected */ if (!err && (msgbuf[0] == (E1000_VF_SET_VLAN | E1000_VT_MSGTYPE_NACK)))
err = -E1000_ERR_MAC_INIT;
return err;
}
/** * e1000_rlpml_set_vf - Set the maximum receive packet length * @hw: pointer to the HW structure * @max_size: value to assign to max frame size
**/ void e1000_rlpml_set_vf(struct e1000_hw *hw, u16 max_size)
{ struct e1000_mbx_info *mbx = &hw->mbx;
u32 msgbuf[2];
s32 ret_val;
if (!ret_val)
ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
msgbuf[0] &= ~E1000_VT_MSGTYPE_CTS;
/* if nacked the address was rejected, use "perm_addr" */ if (!ret_val &&
(msgbuf[0] == (E1000_VF_SET_MAC_ADDR | E1000_VT_MSGTYPE_NACK)))
e1000_read_mac_addr_vf(hw);
}
/** * e1000_read_mac_addr_vf - Read device MAC address * @hw: pointer to the HW structure
**/ static s32 e1000_read_mac_addr_vf(struct e1000_hw *hw)
{
memcpy(hw->mac.addr, hw->mac.perm_addr, ETH_ALEN);
return E1000_SUCCESS;
}
/** * e1000_set_uc_addr_vf - Set or clear unicast filters * @hw: pointer to the HW structure * @sub_cmd: add or clear filters * @addr: pointer to the filter MAC address
**/ static s32 e1000_set_uc_addr_vf(struct e1000_hw *hw, u32 sub_cmd, u8 *addr)
{ struct e1000_mbx_info *mbx = &hw->mbx;
u32 msgbuf[3], msgbuf_chk;
u8 *msg_addr = (u8 *)(&msgbuf[1]);
s32 ret_val;
if (!ret_val)
ret_val = mbx->ops.read_posted(hw, msgbuf, 3);
msgbuf[0] &= ~E1000_VT_MSGTYPE_CTS;
if (!ret_val) {
msgbuf[0] &= ~E1000_VT_MSGTYPE_CTS;
if (msgbuf[0] == (msgbuf_chk | E1000_VT_MSGTYPE_NACK)) return -ENOSPC;
}
return ret_val;
}
/** * e1000_check_for_link_vf - Check for link for a virtual interface * @hw: pointer to the HW structure * * Checks to see if the underlying PF is still talking to the VF and * if it is then it reports the link state to the hardware, otherwise * it reports link down and returns an error.
**/ static s32 e1000_check_for_link_vf(struct e1000_hw *hw)
{ struct e1000_mbx_info *mbx = &hw->mbx; struct e1000_mac_info *mac = &hw->mac;
s32 ret_val = E1000_SUCCESS;
u32 in_msg = 0;
/* We only want to run this if there has been a rst asserted. * in this case that could mean a link change, device reset, * or a virtual function reset
*/
/* If we were hit with a reset or timeout drop the link */ if (!mbx->ops.check_for_rst(hw) || !mbx->timeout)
mac->get_link_status = true;
if (!mac->get_link_status) goto out;
/* if link status is down no point in checking to see if PF is up */ if (!(er32(STATUS) & E1000_STATUS_LU)) goto out;
/* if the read failed it could just be a mailbox collision, best wait * until we are called again and don't report an error
*/ if (mbx->ops.read(hw, &in_msg, 1)) goto out;
/* if incoming message isn't clear to send we are waiting on response */ if (!(in_msg & E1000_VT_MSGTYPE_CTS)) { /* msg is not CTS and is NACK we must have lost CTS status */ if (in_msg & E1000_VT_MSGTYPE_NACK)
ret_val = -E1000_ERR_MAC_INIT; goto out;
}
/* the PF is talking, if we timed out in the past we reinit */ if (!mbx->timeout) {
ret_val = -E1000_ERR_MAC_INIT; goto out;
}
/* if we passed all the tests above then the link is up and we no * longer need to check for link
*/
mac->get_link_status = false;
out: return ret_val;
}
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