diff options
Diffstat (limited to 'drivers/net/e1000/base/e1000_vf.c')
| -rw-r--r-- | drivers/net/e1000/base/e1000_vf.c | 588 |
1 files changed, 588 insertions, 0 deletions
diff --git a/drivers/net/e1000/base/e1000_vf.c b/drivers/net/e1000/base/e1000_vf.c new file mode 100644 index 00000000..7845b48e --- /dev/null +++ b/drivers/net/e1000/base/e1000_vf.c @@ -0,0 +1,588 @@ +/******************************************************************************* + +Copyright (c) 2001-2015, Intel Corporation +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + 3. Neither the name of the Intel Corporation nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE +LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. + +***************************************************************************/ + + +#include "e1000_api.h" + + +STATIC s32 e1000_init_phy_params_vf(struct e1000_hw *hw); +STATIC s32 e1000_init_nvm_params_vf(struct e1000_hw *hw); +STATIC void e1000_release_vf(struct e1000_hw *hw); +STATIC s32 e1000_acquire_vf(struct e1000_hw *hw); +STATIC s32 e1000_setup_link_vf(struct e1000_hw *hw); +STATIC s32 e1000_get_bus_info_pcie_vf(struct e1000_hw *hw); +STATIC s32 e1000_init_mac_params_vf(struct e1000_hw *hw); +STATIC s32 e1000_check_for_link_vf(struct e1000_hw *hw); +STATIC s32 e1000_get_link_up_info_vf(struct e1000_hw *hw, u16 *speed, + u16 *duplex); +STATIC s32 e1000_init_hw_vf(struct e1000_hw *hw); +STATIC s32 e1000_reset_hw_vf(struct e1000_hw *hw); +STATIC void e1000_update_mc_addr_list_vf(struct e1000_hw *hw, u8 *, u32); +STATIC int e1000_rar_set_vf(struct e1000_hw *, u8 *, u32); +STATIC s32 e1000_read_mac_addr_vf(struct e1000_hw *); + +/** + * e1000_init_phy_params_vf - Inits PHY params + * @hw: pointer to the HW structure + * + * Doesn't do much - there's no PHY available to the VF. + **/ +STATIC s32 e1000_init_phy_params_vf(struct e1000_hw *hw) +{ + DEBUGFUNC("e1000_init_phy_params_vf"); + hw->phy.type = e1000_phy_vf; + hw->phy.ops.acquire = e1000_acquire_vf; + hw->phy.ops.release = e1000_release_vf; + + return E1000_SUCCESS; +} + +/** + * e1000_init_nvm_params_vf - Inits NVM params + * @hw: pointer to the HW structure + * + * Doesn't do much - there's no NVM available to the VF. + **/ +STATIC s32 e1000_init_nvm_params_vf(struct e1000_hw *hw) +{ + DEBUGFUNC("e1000_init_nvm_params_vf"); + hw->nvm.type = e1000_nvm_none; + hw->nvm.ops.acquire = e1000_acquire_vf; + hw->nvm.ops.release = e1000_release_vf; + + return E1000_SUCCESS; +} + +/** + * 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; + + DEBUGFUNC("e1000_init_mac_params_vf"); + + /* Set media type */ + /* + * Virtual functions don't care what they're media type is as they + * have no direct access to the PHY, or the media. That is handled + * by the physical function driver. + */ + hw->phy.media_type = e1000_media_type_unknown; + + /* No ASF features for the VF driver */ + mac->asf_firmware_present = false; + /* ARC subsystem not supported */ + mac->arc_subsystem_valid = false; + /* Disable adaptive IFS mode so the generic funcs don't do anything */ + mac->adaptive_ifs = false; + /* 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 */ + /* link setup */ + mac->ops.setup_link = e1000_setup_link_vf; + /* bus type/speed/width */ + mac->ops.get_bus_info = e1000_get_bus_info_pcie_vf; + /* 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; + + + 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) +{ + DEBUGFUNC("e1000_init_function_pointers_vf"); + + hw->mac.ops.init_params = e1000_init_mac_params_vf; + hw->nvm.ops.init_params = e1000_init_nvm_params_vf; + hw->phy.ops.init_params = e1000_init_phy_params_vf; + hw->mbx.ops.init_params = e1000_init_mbx_params_vf; +} + +/** + * e1000_acquire_vf - Acquire rights to access PHY or NVM. + * @hw: pointer to the HW structure + * + * There is no PHY or NVM so we want all attempts to acquire these to fail. + * In addition, the MAC registers to access PHY/NVM don't exist so we don't + * even want any SW to attempt to use them. + **/ +STATIC s32 e1000_acquire_vf(struct e1000_hw E1000_UNUSEDARG *hw) +{ + UNREFERENCED_1PARAMETER(hw); + return -E1000_ERR_PHY; +} + +/** + * e1000_release_vf - Release PHY or NVM + * @hw: pointer to the HW structure + * + * There is no PHY or NVM so we want all attempts to acquire these to fail. + * In addition, the MAC registers to access PHY/NVM don't exist so we don't + * even want any SW to attempt to use them. + **/ +STATIC void e1000_release_vf(struct e1000_hw E1000_UNUSEDARG *hw) +{ + UNREFERENCED_1PARAMETER(hw); + return; +} + +/** + * e1000_setup_link_vf - Sets up link. + * @hw: pointer to the HW structure + * + * Virtual functions cannot change link. + **/ +STATIC s32 e1000_setup_link_vf(struct e1000_hw E1000_UNUSEDARG *hw) +{ + DEBUGFUNC("e1000_setup_link_vf"); + UNREFERENCED_1PARAMETER(hw); + + return E1000_SUCCESS; +} + +/** + * e1000_get_bus_info_pcie_vf - Gets the bus info. + * @hw: pointer to the HW structure + * + * Virtual functions are not really on their own bus. + **/ +STATIC s32 e1000_get_bus_info_pcie_vf(struct e1000_hw *hw) +{ + struct e1000_bus_info *bus = &hw->bus; + + DEBUGFUNC("e1000_get_bus_info_pcie_vf"); + + /* Do not set type PCI-E because we don't want disable master to run */ + bus->type = e1000_bus_type_reserved; + bus->speed = e1000_bus_speed_2500; + + return 0; +} + +/** + * 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; + + DEBUGFUNC("e1000_get_link_up_info_vf"); + + status = E1000_READ_REG(hw, E1000_STATUS); + if (status & E1000_STATUS_SPEED_1000) { + *speed = SPEED_1000; + DEBUGOUT("1000 Mbs, "); + } else if (status & E1000_STATUS_SPEED_100) { + *speed = SPEED_100; + DEBUGOUT("100 Mbs, "); + } else { + *speed = SPEED_10; + DEBUGOUT("10 Mbs, "); + } + + if (status & E1000_STATUS_FD) { + *duplex = FULL_DUPLEX; + DEBUGOUT("Full Duplex\n"); + } else { + *duplex = HALF_DUPLEX; + DEBUGOUT("Half Duplex\n"); + } + + return E1000_SUCCESS; +} + +/** + * 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; + s32 ret_val = -E1000_ERR_MAC_INIT; + u32 ctrl, msgbuf[3]; + u8 *addr = (u8 *)(&msgbuf[1]); + + DEBUGFUNC("e1000_reset_hw_vf"); + + DEBUGOUT("Issuing a function level reset to MAC\n"); + ctrl = E1000_READ_REG(hw, E1000_CTRL); + E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST); + + /* 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 = E1000_VF_MBX_INIT_TIMEOUT; + + msgbuf[0] = E1000_VF_RESET; + mbx->ops.write_posted(hw, msgbuf, 1, 0); + + msec_delay(10); + + /* set our "perm_addr" based on info provided by PF */ + ret_val = mbx->ops.read_posted(hw, msgbuf, 3, 0); + if (!ret_val) { + if (msgbuf[0] == (E1000_VF_RESET | + E1000_VT_MSGTYPE_ACK)) + memcpy(hw->mac.perm_addr, addr, 6); + else + 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) +{ + DEBUGFUNC("e1000_init_hw_vf"); + + /* attempt to set and restore our mac address */ + e1000_rar_set_vf(hw, hw->mac.addr, 0); + + return E1000_SUCCESS; +} + +/** + * e1000_rar_set_vf - set device MAC address + * @hw: pointer to the HW structure + * @addr: pointer to the receive address + * @index receive address array register + **/ +STATIC int e1000_rar_set_vf(struct e1000_hw *hw, u8 *addr, + u32 E1000_UNUSEDARG index) +{ + struct e1000_mbx_info *mbx = &hw->mbx; + u32 msgbuf[3]; + u8 *msg_addr = (u8 *)(&msgbuf[1]); + s32 ret_val; + + UNREFERENCED_1PARAMETER(index); + memset(msgbuf, 0, 12); + msgbuf[0] = E1000_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] &= ~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); + + 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. + **/ +STATIC u32 e1000_hash_mc_addr_vf(struct e1000_hw *hw, u8 *mc_addr) +{ + u32 hash_value, hash_mask; + u8 bit_shift = 0; + + DEBUGFUNC("e1000_hash_mc_addr_generic"); + + /* 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++; + + hash_value = hash_mask & (((mc_addr[4] >> (8 - bit_shift)) | + (((u16) mc_addr[5]) << bit_shift))); + + return hash_value; +} + +STATIC void e1000_write_msg_read_ack(struct e1000_hw *hw, + u32 *msg, u16 size) +{ + struct e1000_mbx_info *mbx = &hw->mbx; + u32 retmsg[E1000_VFMAILBOX_SIZE]; + s32 retval = mbx->ops.write_posted(hw, msg, size, 0); + + if (!retval) + mbx->ops.read_posted(hw, retmsg, E1000_VFMAILBOX_SIZE, 0); +} + +/** + * 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 + * + * Updates the Multicast Table Array. + * The caller must have a packed mc_addr_list of multicast addresses. + **/ +void e1000_update_mc_addr_list_vf(struct e1000_hw *hw, + u8 *mc_addr_list, u32 mc_addr_count) +{ + u32 msgbuf[E1000_VFMAILBOX_SIZE]; + u16 *hash_list = (u16 *)&msgbuf[1]; + u32 hash_value; + u32 i; + + DEBUGFUNC("e1000_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); + + if (mc_addr_count > 30) { + msgbuf[0] |= E1000_VF_SET_MULTICAST_OVERFLOW; + mc_addr_count = 30; + } + + msgbuf[0] = E1000_VF_SET_MULTICAST; + msgbuf[0] |= mc_addr_count << E1000_VT_MSGINFO_SHIFT; + + for (i = 0; i < mc_addr_count; i++) { + hash_value = e1000_hash_mc_addr_vf(hw, mc_addr_list); + DEBUGOUT1("Hash value = 0x%03X\n", hash_value); + hash_list[i] = hash_value & 0x0FFF; + mc_addr_list += ETH_ADDR_LEN; + } + + e1000_write_msg_read_ack(hw, msgbuf, E1000_VFMAILBOX_SIZE); +} + +/** + * e1000_vfta_set_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 + **/ +void e1000_vfta_set_vf(struct e1000_hw *hw, u16 vid, bool set) +{ + u32 msgbuf[2]; + + msgbuf[0] = E1000_VF_SET_VLAN; + msgbuf[1] = vid; + /* Setting the 8 bit field MSG INFO to TRUE indicates "add" */ + if (set) + msgbuf[0] |= E1000_VF_SET_VLAN_ADD; + + e1000_write_msg_read_ack(hw, msgbuf, 2); +} + +/** 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) +{ + u32 msgbuf[2]; + + msgbuf[0] = E1000_VF_SET_LPE; + msgbuf[1] = max_size; + + e1000_write_msg_read_ack(hw, msgbuf, 2); +} + +/** + * e1000_promisc_set_vf - Set flags for Unicast or Multicast promisc + * @hw: pointer to the HW structure + * @uni: boolean indicating unicast promisc status + * @multi: boolean indicating multicast promisc status + **/ +s32 e1000_promisc_set_vf(struct e1000_hw *hw, enum e1000_promisc_type type) +{ + struct e1000_mbx_info *mbx = &hw->mbx; + u32 msgbuf = E1000_VF_SET_PROMISC; + s32 ret_val; + + switch (type) { + case e1000_promisc_multicast: + msgbuf |= E1000_VF_SET_PROMISC_MULTICAST; + break; + case e1000_promisc_enabled: + msgbuf |= E1000_VF_SET_PROMISC_MULTICAST; + case e1000_promisc_unicast: + msgbuf |= E1000_VF_SET_PROMISC_UNICAST; + case e1000_promisc_disabled: + break; + default: + return -E1000_ERR_MAC_INIT; + } + + ret_val = mbx->ops.write_posted(hw, &msgbuf, 1, 0); + + if (!ret_val) + ret_val = mbx->ops.read_posted(hw, &msgbuf, 1, 0); + + if (!ret_val && !(msgbuf & E1000_VT_MSGTYPE_ACK)) + ret_val = -E1000_ERR_MAC_INIT; + + return ret_val; +} + +/** + * 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) +{ + int i; + + for (i = 0; i < ETH_ADDR_LEN; i++) + hw->mac.addr[i] = hw->mac.perm_addr[i]; + + return E1000_SUCCESS; +} + +/** + * 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; + + DEBUGFUNC("e1000_check_for_link_vf"); + + /* + * 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, 0) || !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 (!(E1000_READ_REG(hw, E1000_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, 0)) + goto out; + + /* if incoming message isn't clear to send we are waiting on response */ + if (!(in_msg & E1000_VT_MSGTYPE_CTS)) { + /* message is not CTS and is NACK we have lost CTS status */ + if (in_msg & E1000_VT_MSGTYPE_NACK) + ret_val = -E1000_ERR_MAC_INIT; + goto out; + } + + /* at this point we know the PF is talking to us, check and see if + * we are still accepting timeout or if we had a timeout failure. + * if we failed then we will need to 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; +} + |