cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/intel/fm10k/fm10k_vf.c

/* Intel(R) Ethernet Switch Host Interface Driver
 * Copyright(c) 2013 - 2016 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.
 *
 * 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
 */

#include "fm10k_vf.h"

/**
 *  fm10k_stop_hw_vf - Stop Tx/Rx units
 *  @hw: pointer to hardware structure
 *
 **/

static s32 fm10k_stop_hw_vf(struct fm10k_hw *hw) { u8 *perm_addr = hw->mac.perm_addr; u32 bal = 0, bah = 0, tdlen; s32 err; u16 i; /* we need to disable the queues before taking further steps */ err = fm10k_stop_hw_generic(hw); if (err && err != FM10K_ERR_REQUESTS_PENDING) return err; /* If permanent address is set then we need to restore it */ if (is_valid_ether_addr(perm_addr)) { bal = (((u32)perm_addr[3]) << 24) | (((u32)perm_addr[4]) << 16) | (((u32)perm_addr[5]) << 8); bah = (((u32)0xFF) << 24) | (((u32)perm_addr[0]) << 16) | (((u32)perm_addr[1]) << 8) | ((u32)perm_addr[2]); } /* restore default itr_scale for next VF initialization */ tdlen = hw->mac.itr_scale << FM10K_TDLEN_ITR_SCALE_SHIFT; /* The queues have already been disabled so we just need to * update their base address registers */ for (i = 0; i < hw->mac.max_queues; i++) { fm10k_write_reg(hw, FM10K_TDBAL(i), bal); fm10k_write_reg(hw, FM10K_TDBAH(i), bah); fm10k_write_reg(hw, FM10K_RDBAL(i), bal); fm10k_write_reg(hw, FM10K_RDBAH(i), bah); /* Restore ITR scale in software-defined mechanism in TDLEN * for next VF initialization. See definition of * FM10K_TDLEN_ITR_SCALE_SHIFT for more details on the use of * TDLEN here. */ fm10k_write_reg(hw, FM10K_TDLEN(i), tdlen); } return err; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck22587.55%125.00%
Jacob E Keller3112.06%250.00%
Matthew Vick10.39%125.00%
Total257100.00%4100.00%

/** * fm10k_reset_hw_vf - VF hardware reset * @hw: pointer to hardware structure * * This function should return the hardware to a state similar to the * one it is in after just being initialized. **/
static s32 fm10k_reset_hw_vf(struct fm10k_hw *hw) { s32 err; /* shut down queues we own and reset DMA configuration */ err = fm10k_stop_hw_vf(hw); if (err == FM10K_ERR_REQUESTS_PENDING) hw->mac.reset_while_pending++; else if (err) return err; /* Inititate VF reset */ fm10k_write_reg(hw, FM10K_VFCTRL, FM10K_VFCTRL_RST); /* Flush write and allow 100us for reset to complete */ fm10k_write_flush(hw); udelay(FM10K_RESET_TIMEOUT); /* Clear reset bit and verify it was cleared */ fm10k_write_reg(hw, FM10K_VFCTRL, 0); if (fm10k_read_reg(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST) return FM10K_ERR_RESET_FAILED; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck7481.32%150.00%
Jacob E Keller1718.68%150.00%
Total91100.00%2100.00%

/** * fm10k_init_hw_vf - VF hardware initialization * @hw: pointer to hardware structure * **/
static s32 fm10k_init_hw_vf(struct fm10k_hw *hw) { u32 tqdloc, tqdloc0 = ~fm10k_read_reg(hw, FM10K_TQDLOC(0)); s32 err; u16 i; /* verify we have at least 1 queue */ if (!~fm10k_read_reg(hw, FM10K_TXQCTL(0)) || !~fm10k_read_reg(hw, FM10K_RXQCTL(0))) { err = FM10K_ERR_NO_RESOURCES; goto reset_max_queues; } /* determine how many queues we have */ for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) { /* verify the Descriptor cache offsets are increasing */ tqdloc = ~fm10k_read_reg(hw, FM10K_TQDLOC(i)); if (!tqdloc || (tqdloc == tqdloc0)) break; /* check to verify the PF doesn't own any of our queues */ if (!~fm10k_read_reg(hw, FM10K_TXQCTL(i)) || !~fm10k_read_reg(hw, FM10K_RXQCTL(i))) break; } /* shut down queues we own and reset DMA configuration */ err = fm10k_disable_queues_generic(hw, i); if (err) goto reset_max_queues; /* record maximum queue count */ hw->mac.max_queues = i; /* fetch default VLAN and ITR scale */ hw->mac.default_vid = (fm10k_read_reg(hw, FM10K_TXQCTL(0)) & FM10K_TXQCTL_VID_MASK) >> FM10K_TXQCTL_VID_SHIFT; /* Read the ITR scale from TDLEN. See the definition of * FM10K_TDLEN_ITR_SCALE_SHIFT for more information about how TDLEN is * used here. */ hw->mac.itr_scale = (fm10k_read_reg(hw, FM10K_TDLEN(0)) & FM10K_TDLEN_ITR_SCALE_MASK) >> FM10K_TDLEN_ITR_SCALE_SHIFT; return 0; reset_max_queues: hw->mac.max_queues = 0; return err; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck13257.14%120.00%
Jacob E Keller7733.33%360.00%
Jeff Kirsher229.52%120.00%
Total231100.00%5100.00%

/* This structure defines the attibutes to be parsed below */ const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = { FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN), FM10K_TLV_ATTR_BOOL(FM10K_MAC_VLAN_MSG_SET), FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MAC), FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_DEFAULT_MAC), FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MULTICAST), FM10K_TLV_ATTR_LAST }; /** * fm10k_update_vlan_vf - Update status of VLAN ID in VLAN filter table * @hw: pointer to hardware structure * @vid: VLAN ID to add to table * @vsi: Reserved, should always be 0 * @set: Indicates if this is a set or clear operation * * This function adds or removes the corresponding VLAN ID from the VLAN * filter table for this VF. **/
static s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set) { struct fm10k_mbx_info *mbx = &hw->mbx; u32 msg[4]; /* verify the index is not set */ if (vsi) return FM10K_ERR_PARAM; /* clever trick to verify reserved bits in both vid and length */ if ((vid << 16 | vid) >> 28) return FM10K_ERR_PARAM; /* encode set bit into the VLAN ID */ if (!set) vid |= FM10K_VLAN_CLEAR; /* generate VLAN request */ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN); fm10k_tlv_attr_put_u32(msg, FM10K_MAC_VLAN_MSG_VLAN, vid); /* load onto outgoing mailbox */ return mbx->ops.enqueue_tx(hw, mbx, msg); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck10199.02%150.00%
Jacob E Keller10.98%150.00%
Total102100.00%2100.00%

/** * fm10k_msg_mac_vlan_vf - Read device MAC address from mailbox message * @hw: pointer to the HW structure * @results: Attributes for message * @mbx: unused mailbox data * * This function should determine the MAC address for the VF **/
s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results, struct fm10k_mbx_info *mbx) { u8 perm_addr[ETH_ALEN]; u16 vid; s32 err; /* record MAC address requested */ err = fm10k_tlv_attr_get_mac_vlan( results[FM10K_MAC_VLAN_MSG_DEFAULT_MAC], perm_addr, &vid); if (err) return err; ether_addr_copy(hw->mac.perm_addr, perm_addr); hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1); hw->mac.vlan_override = !!(vid & FM10K_VLAN_OVERRIDE); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck9698.97%150.00%
Jacob E Keller11.03%150.00%
Total97100.00%2100.00%

/** * fm10k_read_mac_addr_vf - Read device MAC address * @hw: pointer to the HW structure * * This function should determine the MAC address for the VF **/
static s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw) { u8 perm_addr[ETH_ALEN]; u32 base_addr; base_addr = fm10k_read_reg(hw, FM10K_TDBAL(0)); /* last byte should be 0 */ if (base_addr << 24) return FM10K_ERR_INVALID_MAC_ADDR; perm_addr[3] = (u8)(base_addr >> 24); perm_addr[4] = (u8)(base_addr >> 16); perm_addr[5] = (u8)(base_addr >> 8); base_addr = fm10k_read_reg(hw, FM10K_TDBAH(0)); /* first byte should be all 1's */ if ((~base_addr) >> 24) return FM10K_ERR_INVALID_MAC_ADDR; perm_addr[0] = (u8)(base_addr >> 16); perm_addr[1] = (u8)(base_addr >> 8); perm_addr[2] = (u8)(base_addr); ether_addr_copy(hw->mac.perm_addr, perm_addr); ether_addr_copy(hw->mac.addr, perm_addr); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck174100.00%1100.00%
Total174100.00%1100.00%

/** * fm10k_update_uc_addr_vf - Update device unicast addresses * @hw: pointer to the HW structure * @glort: unused * @mac: MAC address to add/remove from table * @vid: VLAN ID to add/remove from table * @add: Indicates if this is an add or remove operation * @flags: flags field to indicate add and secure - unused * * This function is used to add or remove unicast MAC addresses for * the VF. **/
static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, u16 glort, const u8 *mac, u16 vid, bool add, u8 flags) { struct fm10k_mbx_info *mbx = &hw->mbx; u32 msg[7]; /* verify VLAN ID is valid */ if (vid >= FM10K_VLAN_TABLE_VID_MAX) return FM10K_ERR_PARAM; /* verify MAC address is valid */ if (!is_valid_ether_addr(mac)) return FM10K_ERR_PARAM; /* verify we are not locked down on the MAC address */ if (is_valid_ether_addr(hw->mac.perm_addr) && !ether_addr_equal(hw->mac.perm_addr, mac)) return FM10K_ERR_PARAM; /* add bit to notify us if this is a set or clear operation */ if (!add) vid |= FM10K_VLAN_CLEAR; /* generate VLAN request */ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN); fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MAC, mac, vid); /* load onto outgoing mailbox */ return mbx->ops.enqueue_tx(hw, mbx, msg); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck13497.81%133.33%
Jacob E Keller21.46%133.33%
Matthew Vick10.73%133.33%
Total137100.00%3100.00%

/** * fm10k_update_mc_addr_vf - Update device multicast addresses * @hw: pointer to the HW structure * @glort: unused * @mac: MAC address to add/remove from table * @vid: VLAN ID to add/remove from table * @add: Indicates if this is an add or remove operation * * This function is used to add or remove multicast MAC addresses for * the VF. **/
static s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw, u16 glort, const u8 *mac, u16 vid, bool add) { struct fm10k_mbx_info *mbx = &hw->mbx; u32 msg[7]; /* verify VLAN ID is valid */ if (vid >= FM10K_VLAN_TABLE_VID_MAX) return FM10K_ERR_PARAM; /* verify multicast address is valid */ if (!is_multicast_ether_addr(mac)) return FM10K_ERR_PARAM; /* add bit to notify us if this is a set or clear operation */ if (!add) vid |= FM10K_VLAN_CLEAR; /* generate VLAN request */ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN); fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MULTICAST, mac, vid); /* load onto outgoing mailbox */ return mbx->ops.enqueue_tx(hw, mbx, msg); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck10699.07%150.00%
Matthew Vick10.93%150.00%
Total107100.00%2100.00%

/** * fm10k_update_int_moderator_vf - Request update of interrupt moderator list * @hw: pointer to hardware structure * * This function will issue a request to the PF to rescan our MSI-X table * and to update the interrupt moderator linked list. **/
static void fm10k_update_int_moderator_vf(struct fm10k_hw *hw) { struct fm10k_mbx_info *mbx = &hw->mbx; u32 msg[1]; /* generate MSI-X request */ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MSIX); /* load onto outgoing mailbox */ mbx->ops.enqueue_tx(hw, mbx, msg); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck49100.00%1100.00%
Total49100.00%1100.00%

/* This structure defines the attibutes to be parsed below */ const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = { FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_DISABLE), FM10K_TLV_ATTR_U8(FM10K_LPORT_STATE_MSG_XCAST_MODE), FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_READY), FM10K_TLV_ATTR_LAST }; /** * fm10k_msg_lport_state_vf - Message handler for lport_state message from PF * @hw: Pointer to hardware structure * @results: pointer array containing parsed data * @mbx: Pointer to mailbox information structure * * This handler is meant to capture the indication from the PF that we * are ready to bring up the interface. **/
s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results, struct fm10k_mbx_info *mbx) { hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ? FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck39100.00%1100.00%
Total39100.00%1100.00%

/** * fm10k_update_lport_state_vf - Update device state in lower device * @hw: pointer to the HW structure * @glort: unused * @count: number of logical ports to enable - unused (always 1) * @enable: boolean value indicating if this is an enable or disable request * * Notify the lower device of a state change. If the lower device is * enabled we can add filters, if it is disabled all filters for this * logical port are flushed. **/
static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw, u16 glort, u16 count, bool enable) { struct fm10k_mbx_info *mbx = &hw->mbx; u32 msg[2]; /* reset glort mask 0 as we have to wait to be enabled */ hw->mac.dglort_map = FM10K_DGLORTMAP_NONE; /* generate port state request */ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE); if (!enable) fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_DISABLE); /* load onto outgoing mailbox */ return mbx->ops.enqueue_tx(hw, mbx, msg); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck80100.00%1100.00%
Total80100.00%1100.00%

/** * fm10k_update_xcast_mode_vf - Request update of multicast mode * @hw: pointer to hardware structure * @glort: unused * @mode: integer value indicating mode being requested * * This function will attempt to request a higher mode for the port * so that it can enable either multicast, multicast promiscuous, or * promiscuous mode of operation. **/
static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw, u16 glort, u8 mode) { struct fm10k_mbx_info *mbx = &hw->mbx; u32 msg[3]; if (mode > FM10K_XCAST_MODE_NONE) return FM10K_ERR_PARAM; /* generate message requesting to change xcast mode */ fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE); fm10k_tlv_attr_put_u8(msg, FM10K_LPORT_STATE_MSG_XCAST_MODE, mode); /* load onto outgoing mailbox */ return mbx->ops.enqueue_tx(hw, mbx, msg); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck74100.00%1100.00%
Total74100.00%1100.00%

/** * fm10k_update_hw_stats_vf - Updates hardware related statistics of VF * @hw: pointer to hardware structure * @stats: pointer to statistics structure * * This function collects and aggregates per queue hardware statistics. **/
static void fm10k_update_hw_stats_vf(struct fm10k_hw *hw, struct fm10k_hw_stats *stats) { fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck33100.00%1100.00%
Total33100.00%1100.00%

/** * fm10k_rebind_hw_stats_vf - Resets base for hardware statistics of VF * @hw: pointer to hardware structure * @stats: pointer to the stats structure to update * * This function resets the base for queue hardware statistics. **/
static void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw, struct fm10k_hw_stats *stats) { /* Unbind Queue Statistics */ fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues); /* Reinitialize bases for all stats */ fm10k_update_hw_stats_vf(hw, stats); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck40100.00%1100.00%
Total40100.00%1100.00%

/** * fm10k_configure_dglort_map_vf - Configures GLORT entry and queues * @hw: pointer to hardware structure * @dglort: pointer to dglort configuration structure * * Reads the configuration structure contained in dglort_cfg and uses * that information to then populate a DGLORTMAP/DEC entry and the queues * to which it has been assigned. **/
static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw *hw, struct fm10k_dglort_cfg *dglort) { /* verify the dglort pointer */ if (!dglort) return FM10K_ERR_PARAM; /* stub for now until we determine correct message for this */ return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck29100.00%1100.00%
Total29100.00%1100.00%

static const struct fm10k_msg_data fm10k_msg_data_vf[] = { FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test), FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf), FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf), FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error), }; static const struct fm10k_mac_ops mac_ops_vf = { .get_bus_info = fm10k_get_bus_info_generic, .reset_hw = fm10k_reset_hw_vf, .init_hw = fm10k_init_hw_vf, .start_hw = fm10k_start_hw_generic, .stop_hw = fm10k_stop_hw_vf, .update_vlan = fm10k_update_vlan_vf, .read_mac_addr = fm10k_read_mac_addr_vf, .update_uc_addr = fm10k_update_uc_addr_vf, .update_mc_addr = fm10k_update_mc_addr_vf, .update_xcast_mode = fm10k_update_xcast_mode_vf, .update_int_moderator = fm10k_update_int_moderator_vf, .update_lport_state = fm10k_update_lport_state_vf, .update_hw_stats = fm10k_update_hw_stats_vf, .rebind_hw_stats = fm10k_rebind_hw_stats_vf, .configure_dglort_map = fm10k_configure_dglort_map_vf, .get_host_state = fm10k_get_host_state_generic, };
static s32 fm10k_get_invariants_vf(struct fm10k_hw *hw) { fm10k_get_invariants_generic(hw); return fm10k_pfvf_mbx_init(hw, &hw->mbx, fm10k_msg_data_vf, 0); }

Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck31100.00%1100.00%
Total31100.00%1100.00%

const struct fm10k_info fm10k_vf_info = { .mac = fm10k_mac_vf, .get_invariants = fm10k_get_invariants_vf, .mac_ops = &mac_ops_vf, };

Overall Contributors

PersonTokensPropCommitsCommitProp
Alexander Duyck163291.07%18.33%
Jacob E Keller1307.25%866.67%
Jeff Kirsher221.23%18.33%
Matthew Vick60.33%18.33%
Bruce W Allan20.11%18.33%
Total1792100.00%12100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.