| /******************************************************************************* |
| * |
| * Intel Ethernet Controller XL710 Family Linux Driver |
| * Copyright(c) 2013 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 |
| * |
| ******************************************************************************/ |
| |
| /* Local includes */ |
| #include "i40e.h" |
| |
| const char i40e_driver_name[] = "i40e"; |
| static const char i40e_driver_string[] = |
| "Intel(R) Ethernet Connection XL710 Network Driver"; |
| |
| #define DRV_KERN "-k" |
| |
| #define DRV_VERSION_MAJOR 0 |
| #define DRV_VERSION_MINOR 3 |
| #define DRV_VERSION_BUILD 11 |
| #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \ |
| __stringify(DRV_VERSION_MINOR) "." \ |
| __stringify(DRV_VERSION_BUILD) DRV_KERN |
| const char i40e_driver_version_str[] = DRV_VERSION; |
| static const char i40e_copyright[] = "Copyright (c) 2013 Intel Corporation."; |
| |
| /* a bit of forward declarations */ |
| static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi); |
| static void i40e_handle_reset_warning(struct i40e_pf *pf); |
| static int i40e_add_vsi(struct i40e_vsi *vsi); |
| static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi); |
| static int i40e_setup_pf_switch(struct i40e_pf *pf); |
| static int i40e_setup_misc_vector(struct i40e_pf *pf); |
| static void i40e_determine_queue_usage(struct i40e_pf *pf); |
| static int i40e_setup_pf_filter_control(struct i40e_pf *pf); |
| |
| /* i40e_pci_tbl - PCI Device ID Table |
| * |
| * Last entry must be all 0s |
| * |
| * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, |
| * Class, Class Mask, private data (not used) } |
| */ |
| static DEFINE_PCI_DEVICE_TABLE(i40e_pci_tbl) = { |
| {PCI_VDEVICE(INTEL, I40E_SFP_XL710_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_SFP_X710_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_QEMU_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_KX_A_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_KX_B_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_KX_C_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_KX_D_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_QSFP_A_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_QSFP_B_DEVICE_ID), 0}, |
| {PCI_VDEVICE(INTEL, I40E_QSFP_C_DEVICE_ID), 0}, |
| /* required last entry */ |
| {0, } |
| }; |
| MODULE_DEVICE_TABLE(pci, i40e_pci_tbl); |
| |
| #define I40E_MAX_VF_COUNT 128 |
| static int debug = -1; |
| module_param(debug, int, 0); |
| MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
| |
| MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); |
| MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(DRV_VERSION); |
| |
| /** |
| * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code |
| * @hw: pointer to the HW structure |
| * @mem: ptr to mem struct to fill out |
| * @size: size of memory requested |
| * @alignment: what to align the allocation to |
| **/ |
| int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem, |
| u64 size, u32 alignment) |
| { |
| struct i40e_pf *pf = (struct i40e_pf *)hw->back; |
| |
| mem->size = ALIGN(size, alignment); |
| mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size, |
| &mem->pa, GFP_KERNEL); |
| if (!mem->va) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_free_dma_mem_d - OS specific memory free for shared code |
| * @hw: pointer to the HW structure |
| * @mem: ptr to mem struct to free |
| **/ |
| int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem) |
| { |
| struct i40e_pf *pf = (struct i40e_pf *)hw->back; |
| |
| dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa); |
| mem->va = NULL; |
| mem->pa = 0; |
| mem->size = 0; |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code |
| * @hw: pointer to the HW structure |
| * @mem: ptr to mem struct to fill out |
| * @size: size of memory requested |
| **/ |
| int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem, |
| u32 size) |
| { |
| mem->size = size; |
| mem->va = kzalloc(size, GFP_KERNEL); |
| |
| if (!mem->va) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_free_virt_mem_d - OS specific memory free for shared code |
| * @hw: pointer to the HW structure |
| * @mem: ptr to mem struct to free |
| **/ |
| int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem) |
| { |
| /* it's ok to kfree a NULL pointer */ |
| kfree(mem->va); |
| mem->va = NULL; |
| mem->size = 0; |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_get_lump - find a lump of free generic resource |
| * @pf: board private structure |
| * @pile: the pile of resource to search |
| * @needed: the number of items needed |
| * @id: an owner id to stick on the items assigned |
| * |
| * Returns the base item index of the lump, or negative for error |
| * |
| * The search_hint trick and lack of advanced fit-finding only work |
| * because we're highly likely to have all the same size lump requests. |
| * Linear search time and any fragmentation should be minimal. |
| **/ |
| static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile, |
| u16 needed, u16 id) |
| { |
| int ret = -ENOMEM; |
| int i, j; |
| |
| if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) { |
| dev_info(&pf->pdev->dev, |
| "param err: pile=%p needed=%d id=0x%04x\n", |
| pile, needed, id); |
| return -EINVAL; |
| } |
| |
| /* start the linear search with an imperfect hint */ |
| i = pile->search_hint; |
| while (i < pile->num_entries) { |
| /* skip already allocated entries */ |
| if (pile->list[i] & I40E_PILE_VALID_BIT) { |
| i++; |
| continue; |
| } |
| |
| /* do we have enough in this lump? */ |
| for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) { |
| if (pile->list[i+j] & I40E_PILE_VALID_BIT) |
| break; |
| } |
| |
| if (j == needed) { |
| /* there was enough, so assign it to the requestor */ |
| for (j = 0; j < needed; j++) |
| pile->list[i+j] = id | I40E_PILE_VALID_BIT; |
| ret = i; |
| pile->search_hint = i + j; |
| break; |
| } else { |
| /* not enough, so skip over it and continue looking */ |
| i += j; |
| } |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * i40e_put_lump - return a lump of generic resource |
| * @pile: the pile of resource to search |
| * @index: the base item index |
| * @id: the owner id of the items assigned |
| * |
| * Returns the count of items in the lump |
| **/ |
| static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id) |
| { |
| int valid_id = (id | I40E_PILE_VALID_BIT); |
| int count = 0; |
| int i; |
| |
| if (!pile || index >= pile->num_entries) |
| return -EINVAL; |
| |
| for (i = index; |
| i < pile->num_entries && pile->list[i] == valid_id; |
| i++) { |
| pile->list[i] = 0; |
| count++; |
| } |
| |
| if (count && index < pile->search_hint) |
| pile->search_hint = index; |
| |
| return count; |
| } |
| |
| /** |
| * i40e_service_event_schedule - Schedule the service task to wake up |
| * @pf: board private structure |
| * |
| * If not already scheduled, this puts the task into the work queue |
| **/ |
| static void i40e_service_event_schedule(struct i40e_pf *pf) |
| { |
| if (!test_bit(__I40E_DOWN, &pf->state) && |
| !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) && |
| !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state)) |
| schedule_work(&pf->service_task); |
| } |
| |
| /** |
| * i40e_tx_timeout - Respond to a Tx Hang |
| * @netdev: network interface device structure |
| * |
| * If any port has noticed a Tx timeout, it is likely that the whole |
| * device is munged, not just the one netdev port, so go for the full |
| * reset. |
| **/ |
| static void i40e_tx_timeout(struct net_device *netdev) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| struct i40e_pf *pf = vsi->back; |
| |
| pf->tx_timeout_count++; |
| |
| if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20))) |
| pf->tx_timeout_recovery_level = 0; |
| pf->tx_timeout_last_recovery = jiffies; |
| netdev_info(netdev, "tx_timeout recovery level %d\n", |
| pf->tx_timeout_recovery_level); |
| |
| switch (pf->tx_timeout_recovery_level) { |
| case 0: |
| /* disable and re-enable queues for the VSI */ |
| if (in_interrupt()) { |
| set_bit(__I40E_REINIT_REQUESTED, &pf->state); |
| set_bit(__I40E_REINIT_REQUESTED, &vsi->state); |
| } else { |
| i40e_vsi_reinit_locked(vsi); |
| } |
| break; |
| case 1: |
| set_bit(__I40E_PF_RESET_REQUESTED, &pf->state); |
| break; |
| case 2: |
| set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state); |
| break; |
| case 3: |
| set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state); |
| break; |
| default: |
| netdev_err(netdev, "tx_timeout recovery unsuccessful\n"); |
| i40e_down(vsi); |
| break; |
| } |
| i40e_service_event_schedule(pf); |
| pf->tx_timeout_recovery_level++; |
| } |
| |
| /** |
| * i40e_release_rx_desc - Store the new tail and head values |
| * @rx_ring: ring to bump |
| * @val: new head index |
| **/ |
| static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val) |
| { |
| rx_ring->next_to_use = val; |
| |
| /* Force memory writes to complete before letting h/w |
| * know there are new descriptors to fetch. (Only |
| * applicable for weak-ordered memory model archs, |
| * such as IA-64). |
| */ |
| wmb(); |
| writel(val, rx_ring->tail); |
| } |
| |
| /** |
| * i40e_get_vsi_stats_struct - Get System Network Statistics |
| * @vsi: the VSI we care about |
| * |
| * Returns the address of the device statistics structure. |
| * The statistics are actually updated from the service task. |
| **/ |
| struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi) |
| { |
| return &vsi->net_stats; |
| } |
| |
| /** |
| * i40e_get_netdev_stats_struct - Get statistics for netdev interface |
| * @netdev: network interface device structure |
| * |
| * Returns the address of the device statistics structure. |
| * The statistics are actually updated from the service task. |
| **/ |
| static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct( |
| struct net_device *netdev, |
| struct rtnl_link_stats64 *stats) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi); |
| int i; |
| |
| rcu_read_lock(); |
| for (i = 0; i < vsi->num_queue_pairs; i++) { |
| struct i40e_ring *tx_ring, *rx_ring; |
| u64 bytes, packets; |
| unsigned int start; |
| |
| tx_ring = ACCESS_ONCE(vsi->tx_rings[i]); |
| if (!tx_ring) |
| continue; |
| |
| do { |
| start = u64_stats_fetch_begin_bh(&tx_ring->syncp); |
| packets = tx_ring->stats.packets; |
| bytes = tx_ring->stats.bytes; |
| } while (u64_stats_fetch_retry_bh(&tx_ring->syncp, start)); |
| |
| stats->tx_packets += packets; |
| stats->tx_bytes += bytes; |
| rx_ring = &tx_ring[1]; |
| |
| do { |
| start = u64_stats_fetch_begin_bh(&rx_ring->syncp); |
| packets = rx_ring->stats.packets; |
| bytes = rx_ring->stats.bytes; |
| } while (u64_stats_fetch_retry_bh(&rx_ring->syncp, start)); |
| |
| stats->rx_packets += packets; |
| stats->rx_bytes += bytes; |
| } |
| rcu_read_unlock(); |
| |
| /* following stats updated by ixgbe_watchdog_task() */ |
| stats->multicast = vsi_stats->multicast; |
| stats->tx_errors = vsi_stats->tx_errors; |
| stats->tx_dropped = vsi_stats->tx_dropped; |
| stats->rx_errors = vsi_stats->rx_errors; |
| stats->rx_crc_errors = vsi_stats->rx_crc_errors; |
| stats->rx_length_errors = vsi_stats->rx_length_errors; |
| |
| return stats; |
| } |
| |
| /** |
| * i40e_vsi_reset_stats - Resets all stats of the given vsi |
| * @vsi: the VSI to have its stats reset |
| **/ |
| void i40e_vsi_reset_stats(struct i40e_vsi *vsi) |
| { |
| struct rtnl_link_stats64 *ns; |
| int i; |
| |
| if (!vsi) |
| return; |
| |
| ns = i40e_get_vsi_stats_struct(vsi); |
| memset(ns, 0, sizeof(*ns)); |
| memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets)); |
| memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats)); |
| memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets)); |
| if (vsi->rx_rings) |
| for (i = 0; i < vsi->num_queue_pairs; i++) { |
| memset(&vsi->rx_rings[i]->stats, 0 , |
| sizeof(vsi->rx_rings[i]->stats)); |
| memset(&vsi->rx_rings[i]->rx_stats, 0 , |
| sizeof(vsi->rx_rings[i]->rx_stats)); |
| memset(&vsi->tx_rings[i]->stats, 0 , |
| sizeof(vsi->tx_rings[i]->stats)); |
| memset(&vsi->tx_rings[i]->tx_stats, 0, |
| sizeof(vsi->tx_rings[i]->tx_stats)); |
| } |
| vsi->stat_offsets_loaded = false; |
| } |
| |
| /** |
| * i40e_pf_reset_stats - Reset all of the stats for the given pf |
| * @pf: the PF to be reset |
| **/ |
| void i40e_pf_reset_stats(struct i40e_pf *pf) |
| { |
| memset(&pf->stats, 0, sizeof(pf->stats)); |
| memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets)); |
| pf->stat_offsets_loaded = false; |
| } |
| |
| /** |
| * i40e_stat_update48 - read and update a 48 bit stat from the chip |
| * @hw: ptr to the hardware info |
| * @hireg: the high 32 bit reg to read |
| * @loreg: the low 32 bit reg to read |
| * @offset_loaded: has the initial offset been loaded yet |
| * @offset: ptr to current offset value |
| * @stat: ptr to the stat |
| * |
| * Since the device stats are not reset at PFReset, they likely will not |
| * be zeroed when the driver starts. We'll save the first values read |
| * and use them as offsets to be subtracted from the raw values in order |
| * to report stats that count from zero. In the process, we also manage |
| * the potential roll-over. |
| **/ |
| static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg, |
| bool offset_loaded, u64 *offset, u64 *stat) |
| { |
| u64 new_data; |
| |
| if (hw->device_id == I40E_QEMU_DEVICE_ID) { |
| new_data = rd32(hw, loreg); |
| new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32; |
| } else { |
| new_data = rd64(hw, loreg); |
| } |
| if (!offset_loaded) |
| *offset = new_data; |
| if (likely(new_data >= *offset)) |
| *stat = new_data - *offset; |
| else |
| *stat = (new_data + ((u64)1 << 48)) - *offset; |
| *stat &= 0xFFFFFFFFFFFFULL; |
| } |
| |
| /** |
| * i40e_stat_update32 - read and update a 32 bit stat from the chip |
| * @hw: ptr to the hardware info |
| * @reg: the hw reg to read |
| * @offset_loaded: has the initial offset been loaded yet |
| * @offset: ptr to current offset value |
| * @stat: ptr to the stat |
| **/ |
| static void i40e_stat_update32(struct i40e_hw *hw, u32 reg, |
| bool offset_loaded, u64 *offset, u64 *stat) |
| { |
| u32 new_data; |
| |
| new_data = rd32(hw, reg); |
| if (!offset_loaded) |
| *offset = new_data; |
| if (likely(new_data >= *offset)) |
| *stat = (u32)(new_data - *offset); |
| else |
| *stat = (u32)((new_data + ((u64)1 << 32)) - *offset); |
| } |
| |
| /** |
| * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters. |
| * @vsi: the VSI to be updated |
| **/ |
| void i40e_update_eth_stats(struct i40e_vsi *vsi) |
| { |
| int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx); |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| struct i40e_eth_stats *oes; |
| struct i40e_eth_stats *es; /* device's eth stats */ |
| |
| es = &vsi->eth_stats; |
| oes = &vsi->eth_stats_offsets; |
| |
| /* Gather up the stats that the hw collects */ |
| i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->tx_errors, &es->tx_errors); |
| i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->rx_discards, &es->rx_discards); |
| |
| i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx), |
| I40E_GLV_GORCL(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->rx_bytes, &es->rx_bytes); |
| i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx), |
| I40E_GLV_UPRCL(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->rx_unicast, &es->rx_unicast); |
| i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx), |
| I40E_GLV_MPRCL(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->rx_multicast, &es->rx_multicast); |
| i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx), |
| I40E_GLV_BPRCL(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->rx_broadcast, &es->rx_broadcast); |
| |
| i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx), |
| I40E_GLV_GOTCL(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->tx_bytes, &es->tx_bytes); |
| i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx), |
| I40E_GLV_UPTCL(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->tx_unicast, &es->tx_unicast); |
| i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx), |
| I40E_GLV_MPTCL(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->tx_multicast, &es->tx_multicast); |
| i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx), |
| I40E_GLV_BPTCL(stat_idx), |
| vsi->stat_offsets_loaded, |
| &oes->tx_broadcast, &es->tx_broadcast); |
| vsi->stat_offsets_loaded = true; |
| } |
| |
| /** |
| * i40e_update_veb_stats - Update Switch component statistics |
| * @veb: the VEB being updated |
| **/ |
| static void i40e_update_veb_stats(struct i40e_veb *veb) |
| { |
| struct i40e_pf *pf = veb->pf; |
| struct i40e_hw *hw = &pf->hw; |
| struct i40e_eth_stats *oes; |
| struct i40e_eth_stats *es; /* device's eth stats */ |
| int idx = 0; |
| |
| idx = veb->stats_idx; |
| es = &veb->stats; |
| oes = &veb->stats_offsets; |
| |
| /* Gather up the stats that the hw collects */ |
| i40e_stat_update32(hw, I40E_GLSW_TDPC(idx), |
| veb->stat_offsets_loaded, |
| &oes->tx_discards, &es->tx_discards); |
| i40e_stat_update32(hw, I40E_GLSW_RUPP(idx), |
| veb->stat_offsets_loaded, |
| &oes->rx_unknown_protocol, &es->rx_unknown_protocol); |
| |
| i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx), |
| veb->stat_offsets_loaded, |
| &oes->rx_bytes, &es->rx_bytes); |
| i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx), |
| veb->stat_offsets_loaded, |
| &oes->rx_unicast, &es->rx_unicast); |
| i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx), |
| veb->stat_offsets_loaded, |
| &oes->rx_multicast, &es->rx_multicast); |
| i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx), |
| veb->stat_offsets_loaded, |
| &oes->rx_broadcast, &es->rx_broadcast); |
| |
| i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx), |
| veb->stat_offsets_loaded, |
| &oes->tx_bytes, &es->tx_bytes); |
| i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx), |
| veb->stat_offsets_loaded, |
| &oes->tx_unicast, &es->tx_unicast); |
| i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx), |
| veb->stat_offsets_loaded, |
| &oes->tx_multicast, &es->tx_multicast); |
| i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx), |
| veb->stat_offsets_loaded, |
| &oes->tx_broadcast, &es->tx_broadcast); |
| veb->stat_offsets_loaded = true; |
| } |
| |
| /** |
| * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode |
| * @pf: the corresponding PF |
| * |
| * Update the Rx XOFF counter (PAUSE frames) in link flow control mode |
| **/ |
| static void i40e_update_link_xoff_rx(struct i40e_pf *pf) |
| { |
| struct i40e_hw_port_stats *osd = &pf->stats_offsets; |
| struct i40e_hw_port_stats *nsd = &pf->stats; |
| struct i40e_hw *hw = &pf->hw; |
| u64 xoff = 0; |
| u16 i, v; |
| |
| if ((hw->fc.current_mode != I40E_FC_FULL) && |
| (hw->fc.current_mode != I40E_FC_RX_PAUSE)) |
| return; |
| |
| xoff = nsd->link_xoff_rx; |
| i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->link_xoff_rx, &nsd->link_xoff_rx); |
| |
| /* No new LFC xoff rx */ |
| if (!(nsd->link_xoff_rx - xoff)) |
| return; |
| |
| /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */ |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| struct i40e_vsi *vsi = pf->vsi[v]; |
| |
| if (!vsi) |
| continue; |
| |
| for (i = 0; i < vsi->num_queue_pairs; i++) { |
| struct i40e_ring *ring = vsi->tx_rings[i]; |
| clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state); |
| } |
| } |
| } |
| |
| /** |
| * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode |
| * @pf: the corresponding PF |
| * |
| * Update the Rx XOFF counter (PAUSE frames) in PFC mode |
| **/ |
| static void i40e_update_prio_xoff_rx(struct i40e_pf *pf) |
| { |
| struct i40e_hw_port_stats *osd = &pf->stats_offsets; |
| struct i40e_hw_port_stats *nsd = &pf->stats; |
| bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false}; |
| struct i40e_dcbx_config *dcb_cfg; |
| struct i40e_hw *hw = &pf->hw; |
| u16 i, v; |
| u8 tc; |
| |
| dcb_cfg = &hw->local_dcbx_config; |
| |
| /* See if DCB enabled with PFC TC */ |
| if (!(pf->flags & I40E_FLAG_DCB_ENABLED) || |
| !(dcb_cfg->pfc.pfcenable)) { |
| i40e_update_link_xoff_rx(pf); |
| return; |
| } |
| |
| for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { |
| u64 prio_xoff = nsd->priority_xoff_rx[i]; |
| i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i), |
| pf->stat_offsets_loaded, |
| &osd->priority_xoff_rx[i], |
| &nsd->priority_xoff_rx[i]); |
| |
| /* No new PFC xoff rx */ |
| if (!(nsd->priority_xoff_rx[i] - prio_xoff)) |
| continue; |
| /* Get the TC for given priority */ |
| tc = dcb_cfg->etscfg.prioritytable[i]; |
| xoff[tc] = true; |
| } |
| |
| /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */ |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| struct i40e_vsi *vsi = pf->vsi[v]; |
| |
| if (!vsi) |
| continue; |
| |
| for (i = 0; i < vsi->num_queue_pairs; i++) { |
| struct i40e_ring *ring = vsi->tx_rings[i]; |
| |
| tc = ring->dcb_tc; |
| if (xoff[tc]) |
| clear_bit(__I40E_HANG_CHECK_ARMED, |
| &ring->state); |
| } |
| } |
| } |
| |
| /** |
| * i40e_update_stats - Update the board statistics counters. |
| * @vsi: the VSI to be updated |
| * |
| * There are a few instances where we store the same stat in a |
| * couple of different structs. This is partly because we have |
| * the netdev stats that need to be filled out, which is slightly |
| * different from the "eth_stats" defined by the chip and used in |
| * VF communications. We sort it all out here in a central place. |
| **/ |
| void i40e_update_stats(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| struct rtnl_link_stats64 *ons; |
| struct rtnl_link_stats64 *ns; /* netdev stats */ |
| struct i40e_eth_stats *oes; |
| struct i40e_eth_stats *es; /* device's eth stats */ |
| u32 tx_restart, tx_busy; |
| u32 rx_page, rx_buf; |
| u64 rx_p, rx_b; |
| u64 tx_p, tx_b; |
| int i; |
| u16 q; |
| |
| if (test_bit(__I40E_DOWN, &vsi->state) || |
| test_bit(__I40E_CONFIG_BUSY, &pf->state)) |
| return; |
| |
| ns = i40e_get_vsi_stats_struct(vsi); |
| ons = &vsi->net_stats_offsets; |
| es = &vsi->eth_stats; |
| oes = &vsi->eth_stats_offsets; |
| |
| /* Gather up the netdev and vsi stats that the driver collects |
| * on the fly during packet processing |
| */ |
| rx_b = rx_p = 0; |
| tx_b = tx_p = 0; |
| tx_restart = tx_busy = 0; |
| rx_page = 0; |
| rx_buf = 0; |
| rcu_read_lock(); |
| for (q = 0; q < vsi->num_queue_pairs; q++) { |
| struct i40e_ring *p; |
| u64 bytes, packets; |
| unsigned int start; |
| |
| /* locate Tx ring */ |
| p = ACCESS_ONCE(vsi->tx_rings[q]); |
| |
| do { |
| start = u64_stats_fetch_begin_bh(&p->syncp); |
| packets = p->stats.packets; |
| bytes = p->stats.bytes; |
| } while (u64_stats_fetch_retry_bh(&p->syncp, start)); |
| tx_b += bytes; |
| tx_p += packets; |
| tx_restart += p->tx_stats.restart_queue; |
| tx_busy += p->tx_stats.tx_busy; |
| |
| /* Rx queue is part of the same block as Tx queue */ |
| p = &p[1]; |
| do { |
| start = u64_stats_fetch_begin_bh(&p->syncp); |
| packets = p->stats.packets; |
| bytes = p->stats.bytes; |
| } while (u64_stats_fetch_retry_bh(&p->syncp, start)); |
| rx_b += bytes; |
| rx_p += packets; |
| rx_buf += p->rx_stats.alloc_rx_buff_failed; |
| rx_page += p->rx_stats.alloc_rx_page_failed; |
| } |
| rcu_read_unlock(); |
| vsi->tx_restart = tx_restart; |
| vsi->tx_busy = tx_busy; |
| vsi->rx_page_failed = rx_page; |
| vsi->rx_buf_failed = rx_buf; |
| |
| ns->rx_packets = rx_p; |
| ns->rx_bytes = rx_b; |
| ns->tx_packets = tx_p; |
| ns->tx_bytes = tx_b; |
| |
| i40e_update_eth_stats(vsi); |
| /* update netdev stats from eth stats */ |
| ons->rx_errors = oes->rx_errors; |
| ns->rx_errors = es->rx_errors; |
| ons->tx_errors = oes->tx_errors; |
| ns->tx_errors = es->tx_errors; |
| ons->multicast = oes->rx_multicast; |
| ns->multicast = es->rx_multicast; |
| ons->tx_dropped = oes->tx_discards; |
| ns->tx_dropped = es->tx_discards; |
| |
| /* Get the port data only if this is the main PF VSI */ |
| if (vsi == pf->vsi[pf->lan_vsi]) { |
| struct i40e_hw_port_stats *nsd = &pf->stats; |
| struct i40e_hw_port_stats *osd = &pf->stats_offsets; |
| |
| i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port), |
| I40E_GLPRT_GORCL(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->eth.rx_bytes, &nsd->eth.rx_bytes); |
| i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port), |
| I40E_GLPRT_GOTCL(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->eth.tx_bytes, &nsd->eth.tx_bytes); |
| i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->eth.rx_discards, |
| &nsd->eth.rx_discards); |
| i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->eth.tx_discards, |
| &nsd->eth.tx_discards); |
| i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port), |
| I40E_GLPRT_MPRCL(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->eth.rx_multicast, |
| &nsd->eth.rx_multicast); |
| |
| i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->tx_dropped_link_down, |
| &nsd->tx_dropped_link_down); |
| |
| i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->crc_errors, &nsd->crc_errors); |
| ns->rx_crc_errors = nsd->crc_errors; |
| |
| i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->illegal_bytes, &nsd->illegal_bytes); |
| ns->rx_errors = nsd->crc_errors |
| + nsd->illegal_bytes; |
| |
| i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->mac_local_faults, |
| &nsd->mac_local_faults); |
| i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->mac_remote_faults, |
| &nsd->mac_remote_faults); |
| |
| i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_length_errors, |
| &nsd->rx_length_errors); |
| ns->rx_length_errors = nsd->rx_length_errors; |
| |
| i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->link_xon_rx, &nsd->link_xon_rx); |
| i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->link_xon_tx, &nsd->link_xon_tx); |
| i40e_update_prio_xoff_rx(pf); /* handles I40E_GLPRT_LXOFFRXC */ |
| i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->link_xoff_tx, &nsd->link_xoff_tx); |
| |
| for (i = 0; i < 8; i++) { |
| i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i), |
| pf->stat_offsets_loaded, |
| &osd->priority_xon_rx[i], |
| &nsd->priority_xon_rx[i]); |
| i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i), |
| pf->stat_offsets_loaded, |
| &osd->priority_xon_tx[i], |
| &nsd->priority_xon_tx[i]); |
| i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i), |
| pf->stat_offsets_loaded, |
| &osd->priority_xoff_tx[i], |
| &nsd->priority_xoff_tx[i]); |
| i40e_stat_update32(hw, |
| I40E_GLPRT_RXON2OFFCNT(hw->port, i), |
| pf->stat_offsets_loaded, |
| &osd->priority_xon_2_xoff[i], |
| &nsd->priority_xon_2_xoff[i]); |
| } |
| |
| i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port), |
| I40E_GLPRT_PRC64L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_size_64, &nsd->rx_size_64); |
| i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port), |
| I40E_GLPRT_PRC127L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_size_127, &nsd->rx_size_127); |
| i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port), |
| I40E_GLPRT_PRC255L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_size_255, &nsd->rx_size_255); |
| i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port), |
| I40E_GLPRT_PRC511L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_size_511, &nsd->rx_size_511); |
| i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port), |
| I40E_GLPRT_PRC1023L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_size_1023, &nsd->rx_size_1023); |
| i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port), |
| I40E_GLPRT_PRC1522L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_size_1522, &nsd->rx_size_1522); |
| i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port), |
| I40E_GLPRT_PRC9522L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_size_big, &nsd->rx_size_big); |
| |
| i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port), |
| I40E_GLPRT_PTC64L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->tx_size_64, &nsd->tx_size_64); |
| i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port), |
| I40E_GLPRT_PTC127L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->tx_size_127, &nsd->tx_size_127); |
| i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port), |
| I40E_GLPRT_PTC255L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->tx_size_255, &nsd->tx_size_255); |
| i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port), |
| I40E_GLPRT_PTC511L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->tx_size_511, &nsd->tx_size_511); |
| i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port), |
| I40E_GLPRT_PTC1023L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->tx_size_1023, &nsd->tx_size_1023); |
| i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port), |
| I40E_GLPRT_PTC1522L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->tx_size_1522, &nsd->tx_size_1522); |
| i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port), |
| I40E_GLPRT_PTC9522L(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->tx_size_big, &nsd->tx_size_big); |
| |
| i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_undersize, &nsd->rx_undersize); |
| i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_fragments, &nsd->rx_fragments); |
| i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_oversize, &nsd->rx_oversize); |
| i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port), |
| pf->stat_offsets_loaded, |
| &osd->rx_jabber, &nsd->rx_jabber); |
| } |
| |
| pf->stat_offsets_loaded = true; |
| } |
| |
| /** |
| * i40e_find_filter - Search VSI filter list for specific mac/vlan filter |
| * @vsi: the VSI to be searched |
| * @macaddr: the MAC address |
| * @vlan: the vlan |
| * @is_vf: make sure its a vf filter, else doesn't matter |
| * @is_netdev: make sure its a netdev filter, else doesn't matter |
| * |
| * Returns ptr to the filter object or NULL |
| **/ |
| static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi, |
| u8 *macaddr, s16 vlan, |
| bool is_vf, bool is_netdev) |
| { |
| struct i40e_mac_filter *f; |
| |
| if (!vsi || !macaddr) |
| return NULL; |
| |
| list_for_each_entry(f, &vsi->mac_filter_list, list) { |
| if ((ether_addr_equal(macaddr, f->macaddr)) && |
| (vlan == f->vlan) && |
| (!is_vf || f->is_vf) && |
| (!is_netdev || f->is_netdev)) |
| return f; |
| } |
| return NULL; |
| } |
| |
| /** |
| * i40e_find_mac - Find a mac addr in the macvlan filters list |
| * @vsi: the VSI to be searched |
| * @macaddr: the MAC address we are searching for |
| * @is_vf: make sure its a vf filter, else doesn't matter |
| * @is_netdev: make sure its a netdev filter, else doesn't matter |
| * |
| * Returns the first filter with the provided MAC address or NULL if |
| * MAC address was not found |
| **/ |
| struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr, |
| bool is_vf, bool is_netdev) |
| { |
| struct i40e_mac_filter *f; |
| |
| if (!vsi || !macaddr) |
| return NULL; |
| |
| list_for_each_entry(f, &vsi->mac_filter_list, list) { |
| if ((ether_addr_equal(macaddr, f->macaddr)) && |
| (!is_vf || f->is_vf) && |
| (!is_netdev || f->is_netdev)) |
| return f; |
| } |
| return NULL; |
| } |
| |
| /** |
| * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode |
| * @vsi: the VSI to be searched |
| * |
| * Returns true if VSI is in vlan mode or false otherwise |
| **/ |
| bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi) |
| { |
| struct i40e_mac_filter *f; |
| |
| /* Only -1 for all the filters denotes not in vlan mode |
| * so we have to go through all the list in order to make sure |
| */ |
| list_for_each_entry(f, &vsi->mac_filter_list, list) { |
| if (f->vlan >= 0) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** |
| * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans |
| * @vsi: the VSI to be searched |
| * @macaddr: the mac address to be filtered |
| * @is_vf: true if it is a vf |
| * @is_netdev: true if it is a netdev |
| * |
| * Goes through all the macvlan filters and adds a |
| * macvlan filter for each unique vlan that already exists |
| * |
| * Returns first filter found on success, else NULL |
| **/ |
| struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr, |
| bool is_vf, bool is_netdev) |
| { |
| struct i40e_mac_filter *f; |
| |
| list_for_each_entry(f, &vsi->mac_filter_list, list) { |
| if (!i40e_find_filter(vsi, macaddr, f->vlan, |
| is_vf, is_netdev)) { |
| if (!i40e_add_filter(vsi, macaddr, f->vlan, |
| is_vf, is_netdev)) |
| return NULL; |
| } |
| } |
| |
| return list_first_entry_or_null(&vsi->mac_filter_list, |
| struct i40e_mac_filter, list); |
| } |
| |
| /** |
| * i40e_add_filter - Add a mac/vlan filter to the VSI |
| * @vsi: the VSI to be searched |
| * @macaddr: the MAC address |
| * @vlan: the vlan |
| * @is_vf: make sure its a vf filter, else doesn't matter |
| * @is_netdev: make sure its a netdev filter, else doesn't matter |
| * |
| * Returns ptr to the filter object or NULL when no memory available. |
| **/ |
| struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi, |
| u8 *macaddr, s16 vlan, |
| bool is_vf, bool is_netdev) |
| { |
| struct i40e_mac_filter *f; |
| |
| if (!vsi || !macaddr) |
| return NULL; |
| |
| f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev); |
| if (!f) { |
| f = kzalloc(sizeof(*f), GFP_ATOMIC); |
| if (!f) |
| goto add_filter_out; |
| |
| memcpy(f->macaddr, macaddr, ETH_ALEN); |
| f->vlan = vlan; |
| f->changed = true; |
| |
| INIT_LIST_HEAD(&f->list); |
| list_add(&f->list, &vsi->mac_filter_list); |
| } |
| |
| /* increment counter and add a new flag if needed */ |
| if (is_vf) { |
| if (!f->is_vf) { |
| f->is_vf = true; |
| f->counter++; |
| } |
| } else if (is_netdev) { |
| if (!f->is_netdev) { |
| f->is_netdev = true; |
| f->counter++; |
| } |
| } else { |
| f->counter++; |
| } |
| |
| /* changed tells sync_filters_subtask to |
| * push the filter down to the firmware |
| */ |
| if (f->changed) { |
| vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED; |
| vsi->back->flags |= I40E_FLAG_FILTER_SYNC; |
| } |
| |
| add_filter_out: |
| return f; |
| } |
| |
| /** |
| * i40e_del_filter - Remove a mac/vlan filter from the VSI |
| * @vsi: the VSI to be searched |
| * @macaddr: the MAC address |
| * @vlan: the vlan |
| * @is_vf: make sure it's a vf filter, else doesn't matter |
| * @is_netdev: make sure it's a netdev filter, else doesn't matter |
| **/ |
| void i40e_del_filter(struct i40e_vsi *vsi, |
| u8 *macaddr, s16 vlan, |
| bool is_vf, bool is_netdev) |
| { |
| struct i40e_mac_filter *f; |
| |
| if (!vsi || !macaddr) |
| return; |
| |
| f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev); |
| if (!f || f->counter == 0) |
| return; |
| |
| if (is_vf) { |
| if (f->is_vf) { |
| f->is_vf = false; |
| f->counter--; |
| } |
| } else if (is_netdev) { |
| if (f->is_netdev) { |
| f->is_netdev = false; |
| f->counter--; |
| } |
| } else { |
| /* make sure we don't remove a filter in use by vf or netdev */ |
| int min_f = 0; |
| min_f += (f->is_vf ? 1 : 0); |
| min_f += (f->is_netdev ? 1 : 0); |
| |
| if (f->counter > min_f) |
| f->counter--; |
| } |
| |
| /* counter == 0 tells sync_filters_subtask to |
| * remove the filter from the firmware's list |
| */ |
| if (f->counter == 0) { |
| f->changed = true; |
| vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED; |
| vsi->back->flags |= I40E_FLAG_FILTER_SYNC; |
| } |
| } |
| |
| /** |
| * i40e_set_mac - NDO callback to set mac address |
| * @netdev: network interface device structure |
| * @p: pointer to an address structure |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int i40e_set_mac(struct net_device *netdev, void *p) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| struct sockaddr *addr = p; |
| struct i40e_mac_filter *f; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| return -EADDRNOTAVAIL; |
| |
| netdev_info(netdev, "set mac address=%pM\n", addr->sa_data); |
| |
| if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) |
| return 0; |
| |
| if (vsi->type == I40E_VSI_MAIN) { |
| i40e_status ret; |
| ret = i40e_aq_mac_address_write(&vsi->back->hw, |
| I40E_AQC_WRITE_TYPE_LAA_ONLY, |
| addr->sa_data, NULL); |
| if (ret) { |
| netdev_info(netdev, |
| "Addr change for Main VSI failed: %d\n", |
| ret); |
| return -EADDRNOTAVAIL; |
| } |
| |
| memcpy(vsi->back->hw.mac.addr, addr->sa_data, netdev->addr_len); |
| } |
| |
| /* In order to be sure to not drop any packets, add the new address |
| * then delete the old one. |
| */ |
| f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY, false, false); |
| if (!f) |
| return -ENOMEM; |
| |
| i40e_sync_vsi_filters(vsi); |
| i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, false, false); |
| i40e_sync_vsi_filters(vsi); |
| |
| memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc |
| * @vsi: the VSI being setup |
| * @ctxt: VSI context structure |
| * @enabled_tc: Enabled TCs bitmap |
| * @is_add: True if called before Add VSI |
| * |
| * Setup VSI queue mapping for enabled traffic classes. |
| **/ |
| static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi, |
| struct i40e_vsi_context *ctxt, |
| u8 enabled_tc, |
| bool is_add) |
| { |
| struct i40e_pf *pf = vsi->back; |
| u16 sections = 0; |
| u8 netdev_tc = 0; |
| u16 numtc = 0; |
| u16 qcount; |
| u8 offset; |
| u16 qmap; |
| int i; |
| |
| sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID; |
| offset = 0; |
| |
| if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) { |
| /* Find numtc from enabled TC bitmap */ |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { |
| if (enabled_tc & (1 << i)) /* TC is enabled */ |
| numtc++; |
| } |
| if (!numtc) { |
| dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n"); |
| numtc = 1; |
| } |
| } else { |
| /* At least TC0 is enabled in case of non-DCB case */ |
| numtc = 1; |
| } |
| |
| vsi->tc_config.numtc = numtc; |
| vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1; |
| |
| /* Setup queue offset/count for all TCs for given VSI */ |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { |
| /* See if the given TC is enabled for the given VSI */ |
| if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */ |
| int pow, num_qps; |
| |
| vsi->tc_config.tc_info[i].qoffset = offset; |
| switch (vsi->type) { |
| case I40E_VSI_MAIN: |
| if (i == 0) |
| qcount = pf->rss_size; |
| else |
| qcount = pf->num_tc_qps; |
| vsi->tc_config.tc_info[i].qcount = qcount; |
| break; |
| case I40E_VSI_FDIR: |
| case I40E_VSI_SRIOV: |
| case I40E_VSI_VMDQ2: |
| default: |
| qcount = vsi->alloc_queue_pairs; |
| vsi->tc_config.tc_info[i].qcount = qcount; |
| WARN_ON(i != 0); |
| break; |
| } |
| |
| /* find the power-of-2 of the number of queue pairs */ |
| num_qps = vsi->tc_config.tc_info[i].qcount; |
| pow = 0; |
| while (num_qps && |
| ((1 << pow) < vsi->tc_config.tc_info[i].qcount)) { |
| pow++; |
| num_qps >>= 1; |
| } |
| |
| vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++; |
| qmap = |
| (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) | |
| (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT); |
| |
| offset += vsi->tc_config.tc_info[i].qcount; |
| } else { |
| /* TC is not enabled so set the offset to |
| * default queue and allocate one queue |
| * for the given TC. |
| */ |
| vsi->tc_config.tc_info[i].qoffset = 0; |
| vsi->tc_config.tc_info[i].qcount = 1; |
| vsi->tc_config.tc_info[i].netdev_tc = 0; |
| |
| qmap = 0; |
| } |
| ctxt->info.tc_mapping[i] = cpu_to_le16(qmap); |
| } |
| |
| /* Set actual Tx/Rx queue pairs */ |
| vsi->num_queue_pairs = offset; |
| |
| /* Scheduler section valid can only be set for ADD VSI */ |
| if (is_add) { |
| sections |= I40E_AQ_VSI_PROP_SCHED_VALID; |
| |
| ctxt->info.up_enable_bits = enabled_tc; |
| } |
| if (vsi->type == I40E_VSI_SRIOV) { |
| ctxt->info.mapping_flags |= |
| cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG); |
| for (i = 0; i < vsi->num_queue_pairs; i++) |
| ctxt->info.queue_mapping[i] = |
| cpu_to_le16(vsi->base_queue + i); |
| } else { |
| ctxt->info.mapping_flags |= |
| cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG); |
| ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue); |
| } |
| ctxt->info.valid_sections |= cpu_to_le16(sections); |
| } |
| |
| /** |
| * i40e_set_rx_mode - NDO callback to set the netdev filters |
| * @netdev: network interface device structure |
| **/ |
| static void i40e_set_rx_mode(struct net_device *netdev) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_mac_filter *f, *ftmp; |
| struct i40e_vsi *vsi = np->vsi; |
| struct netdev_hw_addr *uca; |
| struct netdev_hw_addr *mca; |
| struct netdev_hw_addr *ha; |
| |
| /* add addr if not already in the filter list */ |
| netdev_for_each_uc_addr(uca, netdev) { |
| if (!i40e_find_mac(vsi, uca->addr, false, true)) { |
| if (i40e_is_vsi_in_vlan(vsi)) |
| i40e_put_mac_in_vlan(vsi, uca->addr, |
| false, true); |
| else |
| i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY, |
| false, true); |
| } |
| } |
| |
| netdev_for_each_mc_addr(mca, netdev) { |
| if (!i40e_find_mac(vsi, mca->addr, false, true)) { |
| if (i40e_is_vsi_in_vlan(vsi)) |
| i40e_put_mac_in_vlan(vsi, mca->addr, |
| false, true); |
| else |
| i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY, |
| false, true); |
| } |
| } |
| |
| /* remove filter if not in netdev list */ |
| list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) { |
| bool found = false; |
| |
| if (!f->is_netdev) |
| continue; |
| |
| if (is_multicast_ether_addr(f->macaddr)) { |
| netdev_for_each_mc_addr(mca, netdev) { |
| if (ether_addr_equal(mca->addr, f->macaddr)) { |
| found = true; |
| break; |
| } |
| } |
| } else { |
| netdev_for_each_uc_addr(uca, netdev) { |
| if (ether_addr_equal(uca->addr, f->macaddr)) { |
| found = true; |
| break; |
| } |
| } |
| |
| for_each_dev_addr(netdev, ha) { |
| if (ether_addr_equal(ha->addr, f->macaddr)) { |
| found = true; |
| break; |
| } |
| } |
| } |
| if (!found) |
| i40e_del_filter( |
| vsi, f->macaddr, I40E_VLAN_ANY, false, true); |
| } |
| |
| /* check for other flag changes */ |
| if (vsi->current_netdev_flags != vsi->netdev->flags) { |
| vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED; |
| vsi->back->flags |= I40E_FLAG_FILTER_SYNC; |
| } |
| } |
| |
| /** |
| * i40e_sync_vsi_filters - Update the VSI filter list to the HW |
| * @vsi: ptr to the VSI |
| * |
| * Push any outstanding VSI filter changes through the AdminQ. |
| * |
| * Returns 0 or error value |
| **/ |
| int i40e_sync_vsi_filters(struct i40e_vsi *vsi) |
| { |
| struct i40e_mac_filter *f, *ftmp; |
| bool promisc_forced_on = false; |
| bool add_happened = false; |
| int filter_list_len = 0; |
| u32 changed_flags = 0; |
| i40e_status aq_ret = 0; |
| struct i40e_pf *pf; |
| int num_add = 0; |
| int num_del = 0; |
| u16 cmd_flags; |
| |
| /* empty array typed pointers, kcalloc later */ |
| struct i40e_aqc_add_macvlan_element_data *add_list; |
| struct i40e_aqc_remove_macvlan_element_data *del_list; |
| |
| while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state)) |
| usleep_range(1000, 2000); |
| pf = vsi->back; |
| |
| if (vsi->netdev) { |
| changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags; |
| vsi->current_netdev_flags = vsi->netdev->flags; |
| } |
| |
| if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) { |
| vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED; |
| |
| filter_list_len = pf->hw.aq.asq_buf_size / |
| sizeof(struct i40e_aqc_remove_macvlan_element_data); |
| del_list = kcalloc(filter_list_len, |
| sizeof(struct i40e_aqc_remove_macvlan_element_data), |
| GFP_KERNEL); |
| if (!del_list) |
| return -ENOMEM; |
| |
| list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) { |
| if (!f->changed) |
| continue; |
| |
| if (f->counter != 0) |
| continue; |
| f->changed = false; |
| cmd_flags = 0; |
| |
| /* add to delete list */ |
| memcpy(del_list[num_del].mac_addr, |
| f->macaddr, ETH_ALEN); |
| del_list[num_del].vlan_tag = |
| cpu_to_le16((u16)(f->vlan == |
| I40E_VLAN_ANY ? 0 : f->vlan)); |
| |
| /* vlan0 as wild card to allow packets from all vlans */ |
| if (f->vlan == I40E_VLAN_ANY || |
| (vsi->netdev && !(vsi->netdev->features & |
| NETIF_F_HW_VLAN_CTAG_FILTER))) |
| cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN; |
| cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH; |
| del_list[num_del].flags = cmd_flags; |
| num_del++; |
| |
| /* unlink from filter list */ |
| list_del(&f->list); |
| kfree(f); |
| |
| /* flush a full buffer */ |
| if (num_del == filter_list_len) { |
| aq_ret = i40e_aq_remove_macvlan(&pf->hw, |
| vsi->seid, del_list, num_del, |
| NULL); |
| num_del = 0; |
| memset(del_list, 0, sizeof(*del_list)); |
| |
| if (aq_ret) |
| dev_info(&pf->pdev->dev, |
| "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n", |
| aq_ret, |
| pf->hw.aq.asq_last_status); |
| } |
| } |
| if (num_del) { |
| aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, |
| del_list, num_del, NULL); |
| num_del = 0; |
| |
| if (aq_ret) |
| dev_info(&pf->pdev->dev, |
| "ignoring delete macvlan error, err %d, aq_err %d\n", |
| aq_ret, pf->hw.aq.asq_last_status); |
| } |
| |
| kfree(del_list); |
| del_list = NULL; |
| |
| /* do all the adds now */ |
| filter_list_len = pf->hw.aq.asq_buf_size / |
| sizeof(struct i40e_aqc_add_macvlan_element_data), |
| add_list = kcalloc(filter_list_len, |
| sizeof(struct i40e_aqc_add_macvlan_element_data), |
| GFP_KERNEL); |
| if (!add_list) |
| return -ENOMEM; |
| |
| list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) { |
| if (!f->changed) |
| continue; |
| |
| if (f->counter == 0) |
| continue; |
| f->changed = false; |
| add_happened = true; |
| cmd_flags = 0; |
| |
| /* add to add array */ |
| memcpy(add_list[num_add].mac_addr, |
| f->macaddr, ETH_ALEN); |
| add_list[num_add].vlan_tag = |
| cpu_to_le16( |
| (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan)); |
| add_list[num_add].queue_number = 0; |
| |
| cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH; |
| |
| /* vlan0 as wild card to allow packets from all vlans */ |
| if (f->vlan == I40E_VLAN_ANY || (vsi->netdev && |
| !(vsi->netdev->features & |
| NETIF_F_HW_VLAN_CTAG_FILTER))) |
| cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN; |
| add_list[num_add].flags = cpu_to_le16(cmd_flags); |
| num_add++; |
| |
| /* flush a full buffer */ |
| if (num_add == filter_list_len) { |
| aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid, |
| add_list, num_add, |
| NULL); |
| num_add = 0; |
| |
| if (aq_ret) |
| break; |
| memset(add_list, 0, sizeof(*add_list)); |
| } |
| } |
| if (num_add) { |
| aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid, |
| add_list, num_add, NULL); |
| num_add = 0; |
| } |
| kfree(add_list); |
| add_list = NULL; |
| |
| if (add_happened && (!aq_ret)) { |
| /* do nothing */; |
| } else if (add_happened && (aq_ret)) { |
| dev_info(&pf->pdev->dev, |
| "add filter failed, err %d, aq_err %d\n", |
| aq_ret, pf->hw.aq.asq_last_status); |
| if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) && |
| !test_bit(__I40E_FILTER_OVERFLOW_PROMISC, |
| &vsi->state)) { |
| promisc_forced_on = true; |
| set_bit(__I40E_FILTER_OVERFLOW_PROMISC, |
| &vsi->state); |
| dev_info(&pf->pdev->dev, "promiscuous mode forced on\n"); |
| } |
| } |
| } |
| |
| /* check for changes in promiscuous modes */ |
| if (changed_flags & IFF_ALLMULTI) { |
| bool cur_multipromisc; |
| cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI); |
| aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw, |
| vsi->seid, |
| cur_multipromisc, |
| NULL); |
| if (aq_ret) |
| dev_info(&pf->pdev->dev, |
| "set multi promisc failed, err %d, aq_err %d\n", |
| aq_ret, pf->hw.aq.asq_last_status); |
| } |
| if ((changed_flags & IFF_PROMISC) || promisc_forced_on) { |
| bool cur_promisc; |
| cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) || |
| test_bit(__I40E_FILTER_OVERFLOW_PROMISC, |
| &vsi->state)); |
| aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw, |
| vsi->seid, |
| cur_promisc, NULL); |
| if (aq_ret) |
| dev_info(&pf->pdev->dev, |
| "set uni promisc failed, err %d, aq_err %d\n", |
| aq_ret, pf->hw.aq.asq_last_status); |
| } |
| |
| clear_bit(__I40E_CONFIG_BUSY, &vsi->state); |
| return 0; |
| } |
| |
| /** |
| * i40e_sync_filters_subtask - Sync the VSI filter list with HW |
| * @pf: board private structure |
| **/ |
| static void i40e_sync_filters_subtask(struct i40e_pf *pf) |
| { |
| int v; |
| |
| if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC)) |
| return; |
| pf->flags &= ~I40E_FLAG_FILTER_SYNC; |
| |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| if (pf->vsi[v] && |
| (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) |
| i40e_sync_vsi_filters(pf->vsi[v]); |
| } |
| } |
| |
| /** |
| * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit |
| * @netdev: network interface device structure |
| * @new_mtu: new value for maximum frame size |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int i40e_change_mtu(struct net_device *netdev, int new_mtu) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
| struct i40e_vsi *vsi = np->vsi; |
| |
| /* MTU < 68 is an error and causes problems on some kernels */ |
| if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER)) |
| return -EINVAL; |
| |
| netdev_info(netdev, "changing MTU from %d to %d\n", |
| netdev->mtu, new_mtu); |
| netdev->mtu = new_mtu; |
| if (netif_running(netdev)) |
| i40e_vsi_reinit_locked(vsi); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI |
| * @vsi: the vsi being adjusted |
| **/ |
| void i40e_vlan_stripping_enable(struct i40e_vsi *vsi) |
| { |
| struct i40e_vsi_context ctxt; |
| i40e_status ret; |
| |
| if ((vsi->info.valid_sections & |
| cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) && |
| ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0)) |
| return; /* already enabled */ |
| |
| vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID); |
| vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL | |
| I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH; |
| |
| ctxt.seid = vsi->seid; |
| memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info)); |
| ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); |
| if (ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "%s: update vsi failed, aq_err=%d\n", |
| __func__, vsi->back->hw.aq.asq_last_status); |
| } |
| } |
| |
| /** |
| * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI |
| * @vsi: the vsi being adjusted |
| **/ |
| void i40e_vlan_stripping_disable(struct i40e_vsi *vsi) |
| { |
| struct i40e_vsi_context ctxt; |
| i40e_status ret; |
| |
| if ((vsi->info.valid_sections & |
| cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) && |
| ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) == |
| I40E_AQ_VSI_PVLAN_EMOD_MASK)) |
| return; /* already disabled */ |
| |
| vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID); |
| vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL | |
| I40E_AQ_VSI_PVLAN_EMOD_NOTHING; |
| |
| ctxt.seid = vsi->seid; |
| memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info)); |
| ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); |
| if (ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "%s: update vsi failed, aq_err=%d\n", |
| __func__, vsi->back->hw.aq.asq_last_status); |
| } |
| } |
| |
| /** |
| * i40e_vlan_rx_register - Setup or shutdown vlan offload |
| * @netdev: network interface to be adjusted |
| * @features: netdev features to test if VLAN offload is enabled or not |
| **/ |
| static void i40e_vlan_rx_register(struct net_device *netdev, u32 features) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| |
| if (features & NETIF_F_HW_VLAN_CTAG_RX) |
| i40e_vlan_stripping_enable(vsi); |
| else |
| i40e_vlan_stripping_disable(vsi); |
| } |
| |
| /** |
| * i40e_vsi_add_vlan - Add vsi membership for given vlan |
| * @vsi: the vsi being configured |
| * @vid: vlan id to be added (0 = untagged only , -1 = any) |
| **/ |
| int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid) |
| { |
| struct i40e_mac_filter *f, *add_f; |
| bool is_netdev, is_vf; |
| int ret; |
| |
| is_vf = (vsi->type == I40E_VSI_SRIOV); |
| is_netdev = !!(vsi->netdev); |
| |
| if (is_netdev) { |
| add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid, |
| is_vf, is_netdev); |
| if (!add_f) { |
| dev_info(&vsi->back->pdev->dev, |
| "Could not add vlan filter %d for %pM\n", |
| vid, vsi->netdev->dev_addr); |
| return -ENOMEM; |
| } |
| } |
| |
| list_for_each_entry(f, &vsi->mac_filter_list, list) { |
| add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev); |
| if (!add_f) { |
| dev_info(&vsi->back->pdev->dev, |
| "Could not add vlan filter %d for %pM\n", |
| vid, f->macaddr); |
| return -ENOMEM; |
| } |
| } |
| |
| ret = i40e_sync_vsi_filters(vsi); |
| if (ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "Could not sync filters for vid %d\n", vid); |
| return ret; |
| } |
| |
| /* Now if we add a vlan tag, make sure to check if it is the first |
| * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag" |
| * with 0, so we now accept untagged and specified tagged traffic |
| * (and not any taged and untagged) |
| */ |
| if (vid > 0) { |
| if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr, |
| I40E_VLAN_ANY, |
| is_vf, is_netdev)) { |
| i40e_del_filter(vsi, vsi->netdev->dev_addr, |
| I40E_VLAN_ANY, is_vf, is_netdev); |
| add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0, |
| is_vf, is_netdev); |
| if (!add_f) { |
| dev_info(&vsi->back->pdev->dev, |
| "Could not add filter 0 for %pM\n", |
| vsi->netdev->dev_addr); |
| return -ENOMEM; |
| } |
| } |
| |
| list_for_each_entry(f, &vsi->mac_filter_list, list) { |
| if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY, |
| is_vf, is_netdev)) { |
| i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, |
| is_vf, is_netdev); |
| add_f = i40e_add_filter(vsi, f->macaddr, |
| 0, is_vf, is_netdev); |
| if (!add_f) { |
| dev_info(&vsi->back->pdev->dev, |
| "Could not add filter 0 for %pM\n", |
| f->macaddr); |
| return -ENOMEM; |
| } |
| } |
| } |
| ret = i40e_sync_vsi_filters(vsi); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * i40e_vsi_kill_vlan - Remove vsi membership for given vlan |
| * @vsi: the vsi being configured |
| * @vid: vlan id to be removed (0 = untagged only , -1 = any) |
| * |
| * Return: 0 on success or negative otherwise |
| **/ |
| int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid) |
| { |
| struct net_device *netdev = vsi->netdev; |
| struct i40e_mac_filter *f, *add_f; |
| bool is_vf, is_netdev; |
| int filter_count = 0; |
| int ret; |
| |
| is_vf = (vsi->type == I40E_VSI_SRIOV); |
| is_netdev = !!(netdev); |
| |
| if (is_netdev) |
| i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev); |
| |
| list_for_each_entry(f, &vsi->mac_filter_list, list) |
| i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev); |
| |
| ret = i40e_sync_vsi_filters(vsi); |
| if (ret) { |
| dev_info(&vsi->back->pdev->dev, "Could not sync filters\n"); |
| return ret; |
| } |
| |
| /* go through all the filters for this VSI and if there is only |
| * vid == 0 it means there are no other filters, so vid 0 must |
| * be replaced with -1. This signifies that we should from now |
| * on accept any traffic (with any tag present, or untagged) |
| */ |
| list_for_each_entry(f, &vsi->mac_filter_list, list) { |
| if (is_netdev) { |
| if (f->vlan && |
| ether_addr_equal(netdev->dev_addr, f->macaddr)) |
| filter_count++; |
| } |
| |
| if (f->vlan) |
| filter_count++; |
| } |
| |
| if (!filter_count && is_netdev) { |
| i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev); |
| f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY, |
| is_vf, is_netdev); |
| if (!f) { |
| dev_info(&vsi->back->pdev->dev, |
| "Could not add filter %d for %pM\n", |
| I40E_VLAN_ANY, netdev->dev_addr); |
| return -ENOMEM; |
| } |
| } |
| |
| if (!filter_count) { |
| list_for_each_entry(f, &vsi->mac_filter_list, list) { |
| i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev); |
| add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY, |
| is_vf, is_netdev); |
| if (!add_f) { |
| dev_info(&vsi->back->pdev->dev, |
| "Could not add filter %d for %pM\n", |
| I40E_VLAN_ANY, f->macaddr); |
| return -ENOMEM; |
| } |
| } |
| } |
| |
| return i40e_sync_vsi_filters(vsi); |
| } |
| |
| /** |
| * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload |
| * @netdev: network interface to be adjusted |
| * @vid: vlan id to be added |
| * |
| * net_device_ops implementation for adding vlan ids |
| **/ |
| static int i40e_vlan_rx_add_vid(struct net_device *netdev, |
| __always_unused __be16 proto, u16 vid) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| int ret = 0; |
| |
| if (vid > 4095) |
| return -EINVAL; |
| |
| netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid); |
| |
| /* If the network stack called us with vid = 0, we should |
| * indicate to i40e_vsi_add_vlan() that we want to receive |
| * any traffic (i.e. with any vlan tag, or untagged) |
| */ |
| ret = i40e_vsi_add_vlan(vsi, vid ? vid : I40E_VLAN_ANY); |
| |
| if (!ret && (vid < VLAN_N_VID)) |
| set_bit(vid, vsi->active_vlans); |
| |
| return ret; |
| } |
| |
| /** |
| * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload |
| * @netdev: network interface to be adjusted |
| * @vid: vlan id to be removed |
| * |
| * net_device_ops implementation for adding vlan ids |
| **/ |
| static int i40e_vlan_rx_kill_vid(struct net_device *netdev, |
| __always_unused __be16 proto, u16 vid) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| |
| netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid); |
| |
| /* return code is ignored as there is nothing a user |
| * can do about failure to remove and a log message was |
| * already printed from the other function |
| */ |
| i40e_vsi_kill_vlan(vsi, vid); |
| |
| clear_bit(vid, vsi->active_vlans); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up |
| * @vsi: the vsi being brought back up |
| **/ |
| static void i40e_restore_vlan(struct i40e_vsi *vsi) |
| { |
| u16 vid; |
| |
| if (!vsi->netdev) |
| return; |
| |
| i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features); |
| |
| for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID) |
| i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q), |
| vid); |
| } |
| |
| /** |
| * i40e_vsi_add_pvid - Add pvid for the VSI |
| * @vsi: the vsi being adjusted |
| * @vid: the vlan id to set as a PVID |
| **/ |
| int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid) |
| { |
| struct i40e_vsi_context ctxt; |
| i40e_status aq_ret; |
| |
| vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID); |
| vsi->info.pvid = cpu_to_le16(vid); |
| vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_INSERT_PVID; |
| vsi->info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_UNTAGGED; |
| |
| ctxt.seid = vsi->seid; |
| memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info)); |
| aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); |
| if (aq_ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "%s: update vsi failed, aq_err=%d\n", |
| __func__, vsi->back->hw.aq.asq_last_status); |
| return -ENOENT; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_remove_pvid - Remove the pvid from the VSI |
| * @vsi: the vsi being adjusted |
| * |
| * Just use the vlan_rx_register() service to put it back to normal |
| **/ |
| void i40e_vsi_remove_pvid(struct i40e_vsi *vsi) |
| { |
| vsi->info.pvid = 0; |
| i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features); |
| } |
| |
| /** |
| * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources |
| * @vsi: ptr to the VSI |
| * |
| * If this function returns with an error, then it's possible one or |
| * more of the rings is populated (while the rest are not). It is the |
| * callers duty to clean those orphaned rings. |
| * |
| * Return 0 on success, negative on failure |
| **/ |
| static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi) |
| { |
| int i, err = 0; |
| |
| for (i = 0; i < vsi->num_queue_pairs && !err; i++) |
| err = i40e_setup_tx_descriptors(vsi->tx_rings[i]); |
| |
| return err; |
| } |
| |
| /** |
| * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues |
| * @vsi: ptr to the VSI |
| * |
| * Free VSI's transmit software resources |
| **/ |
| static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi) |
| { |
| int i; |
| |
| for (i = 0; i < vsi->num_queue_pairs; i++) |
| if (vsi->tx_rings[i]->desc) |
| i40e_free_tx_resources(vsi->tx_rings[i]); |
| } |
| |
| /** |
| * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources |
| * @vsi: ptr to the VSI |
| * |
| * If this function returns with an error, then it's possible one or |
| * more of the rings is populated (while the rest are not). It is the |
| * callers duty to clean those orphaned rings. |
| * |
| * Return 0 on success, negative on failure |
| **/ |
| static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi) |
| { |
| int i, err = 0; |
| |
| for (i = 0; i < vsi->num_queue_pairs && !err; i++) |
| err = i40e_setup_rx_descriptors(vsi->rx_rings[i]); |
| return err; |
| } |
| |
| /** |
| * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues |
| * @vsi: ptr to the VSI |
| * |
| * Free all receive software resources |
| **/ |
| static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi) |
| { |
| int i; |
| |
| for (i = 0; i < vsi->num_queue_pairs; i++) |
| if (vsi->rx_rings[i]->desc) |
| i40e_free_rx_resources(vsi->rx_rings[i]); |
| } |
| |
| /** |
| * i40e_configure_tx_ring - Configure a transmit ring context and rest |
| * @ring: The Tx ring to configure |
| * |
| * Configure the Tx descriptor ring in the HMC context. |
| **/ |
| static int i40e_configure_tx_ring(struct i40e_ring *ring) |
| { |
| struct i40e_vsi *vsi = ring->vsi; |
| u16 pf_q = vsi->base_queue + ring->queue_index; |
| struct i40e_hw *hw = &vsi->back->hw; |
| struct i40e_hmc_obj_txq tx_ctx; |
| i40e_status err = 0; |
| u32 qtx_ctl = 0; |
| |
| /* some ATR related tx ring init */ |
| if (vsi->back->flags & I40E_FLAG_FDIR_ATR_ENABLED) { |
| ring->atr_sample_rate = vsi->back->atr_sample_rate; |
| ring->atr_count = 0; |
| } else { |
| ring->atr_sample_rate = 0; |
| } |
| |
| /* initialize XPS */ |
| if (ring->q_vector && ring->netdev && |
| !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state)) |
| netif_set_xps_queue(ring->netdev, |
| &ring->q_vector->affinity_mask, |
| ring->queue_index); |
| |
| /* clear the context structure first */ |
| memset(&tx_ctx, 0, sizeof(tx_ctx)); |
| |
| tx_ctx.new_context = 1; |
| tx_ctx.base = (ring->dma / 128); |
| tx_ctx.qlen = ring->count; |
| tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FDIR_ENABLED | |
| I40E_FLAG_FDIR_ATR_ENABLED)); |
| |
| /* As part of VSI creation/update, FW allocates certain |
| * Tx arbitration queue sets for each TC enabled for |
| * the VSI. The FW returns the handles to these queue |
| * sets as part of the response buffer to Add VSI, |
| * Update VSI, etc. AQ commands. It is expected that |
| * these queue set handles be associated with the Tx |
| * queues by the driver as part of the TX queue context |
| * initialization. This has to be done regardless of |
| * DCB as by default everything is mapped to TC0. |
| */ |
| tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]); |
| tx_ctx.rdylist_act = 0; |
| |
| /* clear the context in the HMC */ |
| err = i40e_clear_lan_tx_queue_context(hw, pf_q); |
| if (err) { |
| dev_info(&vsi->back->pdev->dev, |
| "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n", |
| ring->queue_index, pf_q, err); |
| return -ENOMEM; |
| } |
| |
| /* set the context in the HMC */ |
| err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx); |
| if (err) { |
| dev_info(&vsi->back->pdev->dev, |
| "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n", |
| ring->queue_index, pf_q, err); |
| return -ENOMEM; |
| } |
| |
| /* Now associate this queue with this PCI function */ |
| qtx_ctl = I40E_QTX_CTL_PF_QUEUE; |
| qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) & |
| I40E_QTX_CTL_PF_INDX_MASK); |
| wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl); |
| i40e_flush(hw); |
| |
| clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state); |
| |
| /* cache tail off for easier writes later */ |
| ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_configure_rx_ring - Configure a receive ring context |
| * @ring: The Rx ring to configure |
| * |
| * Configure the Rx descriptor ring in the HMC context. |
| **/ |
| static int i40e_configure_rx_ring(struct i40e_ring *ring) |
| { |
| struct i40e_vsi *vsi = ring->vsi; |
| u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len; |
| u16 pf_q = vsi->base_queue + ring->queue_index; |
| struct i40e_hw *hw = &vsi->back->hw; |
| struct i40e_hmc_obj_rxq rx_ctx; |
| i40e_status err = 0; |
| |
| ring->state = 0; |
| |
| /* clear the context structure first */ |
| memset(&rx_ctx, 0, sizeof(rx_ctx)); |
| |
| ring->rx_buf_len = vsi->rx_buf_len; |
| ring->rx_hdr_len = vsi->rx_hdr_len; |
| |
| rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT; |
| rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT; |
| |
| rx_ctx.base = (ring->dma / 128); |
| rx_ctx.qlen = ring->count; |
| |
| if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) { |
| set_ring_16byte_desc_enabled(ring); |
| rx_ctx.dsize = 0; |
| } else { |
| rx_ctx.dsize = 1; |
| } |
| |
| rx_ctx.dtype = vsi->dtype; |
| if (vsi->dtype) { |
| set_ring_ps_enabled(ring); |
| rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 | |
| I40E_RX_SPLIT_IP | |
| I40E_RX_SPLIT_TCP_UDP | |
| I40E_RX_SPLIT_SCTP; |
| } else { |
| rx_ctx.hsplit_0 = 0; |
| } |
| |
| rx_ctx.rxmax = min_t(u16, vsi->max_frame, |
| (chain_len * ring->rx_buf_len)); |
| rx_ctx.tphrdesc_ena = 1; |
| rx_ctx.tphwdesc_ena = 1; |
| rx_ctx.tphdata_ena = 1; |
| rx_ctx.tphhead_ena = 1; |
| rx_ctx.lrxqthresh = 2; |
| rx_ctx.crcstrip = 1; |
| rx_ctx.l2tsel = 1; |
| rx_ctx.showiv = 1; |
| |
| /* clear the context in the HMC */ |
| err = i40e_clear_lan_rx_queue_context(hw, pf_q); |
| if (err) { |
| dev_info(&vsi->back->pdev->dev, |
| "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n", |
| ring->queue_index, pf_q, err); |
| return -ENOMEM; |
| } |
| |
| /* set the context in the HMC */ |
| err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx); |
| if (err) { |
| dev_info(&vsi->back->pdev->dev, |
| "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n", |
| ring->queue_index, pf_q, err); |
| return -ENOMEM; |
| } |
| |
| /* cache tail for quicker writes, and clear the reg before use */ |
| ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q); |
| writel(0, ring->tail); |
| |
| i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring)); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_configure_tx - Configure the VSI for Tx |
| * @vsi: VSI structure describing this set of rings and resources |
| * |
| * Configure the Tx VSI for operation. |
| **/ |
| static int i40e_vsi_configure_tx(struct i40e_vsi *vsi) |
| { |
| int err = 0; |
| u16 i; |
| |
| for (i = 0; (i < vsi->num_queue_pairs) && !err; i++) |
| err = i40e_configure_tx_ring(vsi->tx_rings[i]); |
| |
| return err; |
| } |
| |
| /** |
| * i40e_vsi_configure_rx - Configure the VSI for Rx |
| * @vsi: the VSI being configured |
| * |
| * Configure the Rx VSI for operation. |
| **/ |
| static int i40e_vsi_configure_rx(struct i40e_vsi *vsi) |
| { |
| int err = 0; |
| u16 i; |
| |
| if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN)) |
| vsi->max_frame = vsi->netdev->mtu + ETH_HLEN |
| + ETH_FCS_LEN + VLAN_HLEN; |
| else |
| vsi->max_frame = I40E_RXBUFFER_2048; |
| |
| /* figure out correct receive buffer length */ |
| switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED | |
| I40E_FLAG_RX_PS_ENABLED)) { |
| case I40E_FLAG_RX_1BUF_ENABLED: |
| vsi->rx_hdr_len = 0; |
| vsi->rx_buf_len = vsi->max_frame; |
| vsi->dtype = I40E_RX_DTYPE_NO_SPLIT; |
| break; |
| case I40E_FLAG_RX_PS_ENABLED: |
| vsi->rx_hdr_len = I40E_RX_HDR_SIZE; |
| vsi->rx_buf_len = I40E_RXBUFFER_2048; |
| vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT; |
| break; |
| default: |
| vsi->rx_hdr_len = I40E_RX_HDR_SIZE; |
| vsi->rx_buf_len = I40E_RXBUFFER_2048; |
| vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS; |
| break; |
| } |
| |
| /* round up for the chip's needs */ |
| vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len, |
| (1 << I40E_RXQ_CTX_HBUFF_SHIFT)); |
| vsi->rx_buf_len = ALIGN(vsi->rx_buf_len, |
| (1 << I40E_RXQ_CTX_DBUFF_SHIFT)); |
| |
| /* set up individual rings */ |
| for (i = 0; i < vsi->num_queue_pairs && !err; i++) |
| err = i40e_configure_rx_ring(vsi->rx_rings[i]); |
| |
| return err; |
| } |
| |
| /** |
| * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC |
| * @vsi: ptr to the VSI |
| **/ |
| static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi) |
| { |
| u16 qoffset, qcount; |
| int i, n; |
| |
| if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) |
| return; |
| |
| for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) { |
| if (!(vsi->tc_config.enabled_tc & (1 << n))) |
| continue; |
| |
| qoffset = vsi->tc_config.tc_info[n].qoffset; |
| qcount = vsi->tc_config.tc_info[n].qcount; |
| for (i = qoffset; i < (qoffset + qcount); i++) { |
| struct i40e_ring *rx_ring = vsi->rx_rings[i]; |
| struct i40e_ring *tx_ring = vsi->tx_rings[i]; |
| rx_ring->dcb_tc = n; |
| tx_ring->dcb_tc = n; |
| } |
| } |
| } |
| |
| /** |
| * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI |
| * @vsi: ptr to the VSI |
| **/ |
| static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi) |
| { |
| if (vsi->netdev) |
| i40e_set_rx_mode(vsi->netdev); |
| } |
| |
| /** |
| * i40e_vsi_configure - Set up the VSI for action |
| * @vsi: the VSI being configured |
| **/ |
| static int i40e_vsi_configure(struct i40e_vsi *vsi) |
| { |
| int err; |
| |
| i40e_set_vsi_rx_mode(vsi); |
| i40e_restore_vlan(vsi); |
| i40e_vsi_config_dcb_rings(vsi); |
| err = i40e_vsi_configure_tx(vsi); |
| if (!err) |
| err = i40e_vsi_configure_rx(vsi); |
| |
| return err; |
| } |
| |
| /** |
| * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW |
| * @vsi: the VSI being configured |
| **/ |
| static void i40e_vsi_configure_msix(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_q_vector *q_vector; |
| struct i40e_hw *hw = &pf->hw; |
| u16 vector; |
| int i, q; |
| u32 val; |
| u32 qp; |
| |
| /* The interrupt indexing is offset by 1 in the PFINT_ITRn |
| * and PFINT_LNKLSTn registers, e.g.: |
| * PFINT_ITRn[0..n-1] gets msix-1..msix-n (qpair interrupts) |
| */ |
| qp = vsi->base_queue; |
| vector = vsi->base_vector; |
| for (i = 0; i < vsi->num_q_vectors; i++, vector++) { |
| q_vector = vsi->q_vectors[i]; |
| q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting); |
| q_vector->rx.latency_range = I40E_LOW_LATENCY; |
| wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1), |
| q_vector->rx.itr); |
| q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting); |
| q_vector->tx.latency_range = I40E_LOW_LATENCY; |
| wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1), |
| q_vector->tx.itr); |
| |
| /* Linked list for the queuepairs assigned to this vector */ |
| wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp); |
| for (q = 0; q < q_vector->num_ringpairs; q++) { |
| val = I40E_QINT_RQCTL_CAUSE_ENA_MASK | |
| (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) | |
| (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) | |
| (qp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)| |
| (I40E_QUEUE_TYPE_TX |
| << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT); |
| |
| wr32(hw, I40E_QINT_RQCTL(qp), val); |
| |
| val = I40E_QINT_TQCTL_CAUSE_ENA_MASK | |
| (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) | |
| (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) | |
| ((qp+1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)| |
| (I40E_QUEUE_TYPE_RX |
| << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT); |
| |
| /* Terminate the linked list */ |
| if (q == (q_vector->num_ringpairs - 1)) |
| val |= (I40E_QUEUE_END_OF_LIST |
| << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT); |
| |
| wr32(hw, I40E_QINT_TQCTL(qp), val); |
| qp++; |
| } |
| } |
| |
| i40e_flush(hw); |
| } |
| |
| /** |
| * i40e_enable_misc_int_causes - enable the non-queue interrupts |
| * @hw: ptr to the hardware info |
| **/ |
| static void i40e_enable_misc_int_causes(struct i40e_hw *hw) |
| { |
| u32 val; |
| |
| /* clear things first */ |
| wr32(hw, I40E_PFINT_ICR0_ENA, 0); /* disable all */ |
| rd32(hw, I40E_PFINT_ICR0); /* read to clear */ |
| |
| val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK | |
| I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK | |
| I40E_PFINT_ICR0_ENA_GRST_MASK | |
| I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK | |
| I40E_PFINT_ICR0_ENA_GPIO_MASK | |
| I40E_PFINT_ICR0_ENA_STORM_DETECT_MASK | |
| I40E_PFINT_ICR0_ENA_HMC_ERR_MASK | |
| I40E_PFINT_ICR0_ENA_VFLR_MASK | |
| I40E_PFINT_ICR0_ENA_ADMINQ_MASK; |
| |
| wr32(hw, I40E_PFINT_ICR0_ENA, val); |
| |
| /* SW_ITR_IDX = 0, but don't change INTENA */ |
| wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK | |
| I40E_PFINT_DYN_CTLN_INTENA_MSK_MASK); |
| |
| /* OTHER_ITR_IDX = 0 */ |
| wr32(hw, I40E_PFINT_STAT_CTL0, 0); |
| } |
| |
| /** |
| * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW |
| * @vsi: the VSI being configured |
| **/ |
| static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi) |
| { |
| struct i40e_q_vector *q_vector = vsi->q_vectors[0]; |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| u32 val; |
| |
| /* set the ITR configuration */ |
| q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting); |
| q_vector->rx.latency_range = I40E_LOW_LATENCY; |
| wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr); |
| q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting); |
| q_vector->tx.latency_range = I40E_LOW_LATENCY; |
| wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr); |
| |
| i40e_enable_misc_int_causes(hw); |
| |
| /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */ |
| wr32(hw, I40E_PFINT_LNKLST0, 0); |
| |
| /* Associate the queue pair to the vector and enable the q int */ |
| val = I40E_QINT_RQCTL_CAUSE_ENA_MASK | |
| (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) | |
| (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT); |
| |
| wr32(hw, I40E_QINT_RQCTL(0), val); |
| |
| val = I40E_QINT_TQCTL_CAUSE_ENA_MASK | |
| (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) | |
| (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT); |
| |
| wr32(hw, I40E_QINT_TQCTL(0), val); |
| i40e_flush(hw); |
| } |
| |
| /** |
| * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0 |
| * @pf: board private structure |
| **/ |
| void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf) |
| { |
| struct i40e_hw *hw = &pf->hw; |
| u32 val; |
| |
| val = I40E_PFINT_DYN_CTL0_INTENA_MASK | |
| I40E_PFINT_DYN_CTL0_CLEARPBA_MASK | |
| (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT); |
| |
| wr32(hw, I40E_PFINT_DYN_CTL0, val); |
| i40e_flush(hw); |
| } |
| |
| /** |
| * i40e_irq_dynamic_enable - Enable default interrupt generation settings |
| * @vsi: pointer to a vsi |
| * @vector: enable a particular Hw Interrupt vector |
| **/ |
| void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector) |
| { |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| u32 val; |
| |
| val = I40E_PFINT_DYN_CTLN_INTENA_MASK | |
| I40E_PFINT_DYN_CTLN_CLEARPBA_MASK | |
| (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT); |
| wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val); |
| /* skip the flush */ |
| } |
| |
| /** |
| * i40e_msix_clean_rings - MSIX mode Interrupt Handler |
| * @irq: interrupt number |
| * @data: pointer to a q_vector |
| **/ |
| static irqreturn_t i40e_msix_clean_rings(int irq, void *data) |
| { |
| struct i40e_q_vector *q_vector = data; |
| |
| if (!q_vector->tx.ring && !q_vector->rx.ring) |
| return IRQ_HANDLED; |
| |
| napi_schedule(&q_vector->napi); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /** |
| * i40e_fdir_clean_rings - Interrupt Handler for FDIR rings |
| * @irq: interrupt number |
| * @data: pointer to a q_vector |
| **/ |
| static irqreturn_t i40e_fdir_clean_rings(int irq, void *data) |
| { |
| struct i40e_q_vector *q_vector = data; |
| |
| if (!q_vector->tx.ring && !q_vector->rx.ring) |
| return IRQ_HANDLED; |
| |
| pr_info("fdir ring cleaning needed\n"); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /** |
| * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts |
| * @vsi: the VSI being configured |
| * @basename: name for the vector |
| * |
| * Allocates MSI-X vectors and requests interrupts from the kernel. |
| **/ |
| static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename) |
| { |
| int q_vectors = vsi->num_q_vectors; |
| struct i40e_pf *pf = vsi->back; |
| int base = vsi->base_vector; |
| int rx_int_idx = 0; |
| int tx_int_idx = 0; |
| int vector, err; |
| |
| for (vector = 0; vector < q_vectors; vector++) { |
| struct i40e_q_vector *q_vector = vsi->q_vectors[vector]; |
| |
| if (q_vector->tx.ring && q_vector->rx.ring) { |
| snprintf(q_vector->name, sizeof(q_vector->name) - 1, |
| "%s-%s-%d", basename, "TxRx", rx_int_idx++); |
| tx_int_idx++; |
| } else if (q_vector->rx.ring) { |
| snprintf(q_vector->name, sizeof(q_vector->name) - 1, |
| "%s-%s-%d", basename, "rx", rx_int_idx++); |
| } else if (q_vector->tx.ring) { |
| snprintf(q_vector->name, sizeof(q_vector->name) - 1, |
| "%s-%s-%d", basename, "tx", tx_int_idx++); |
| } else { |
| /* skip this unused q_vector */ |
| continue; |
| } |
| err = request_irq(pf->msix_entries[base + vector].vector, |
| vsi->irq_handler, |
| 0, |
| q_vector->name, |
| q_vector); |
| if (err) { |
| dev_info(&pf->pdev->dev, |
| "%s: request_irq failed, error: %d\n", |
| __func__, err); |
| goto free_queue_irqs; |
| } |
| /* assign the mask for this irq */ |
| irq_set_affinity_hint(pf->msix_entries[base + vector].vector, |
| &q_vector->affinity_mask); |
| } |
| |
| return 0; |
| |
| free_queue_irqs: |
| while (vector) { |
| vector--; |
| irq_set_affinity_hint(pf->msix_entries[base + vector].vector, |
| NULL); |
| free_irq(pf->msix_entries[base + vector].vector, |
| &(vsi->q_vectors[vector])); |
| } |
| return err; |
| } |
| |
| /** |
| * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI |
| * @vsi: the VSI being un-configured |
| **/ |
| static void i40e_vsi_disable_irq(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| int base = vsi->base_vector; |
| int i; |
| |
| for (i = 0; i < vsi->num_queue_pairs; i++) { |
| wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0); |
| wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0); |
| } |
| |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) { |
| for (i = vsi->base_vector; |
| i < (vsi->num_q_vectors + vsi->base_vector); i++) |
| wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0); |
| |
| i40e_flush(hw); |
| for (i = 0; i < vsi->num_q_vectors; i++) |
| synchronize_irq(pf->msix_entries[i + base].vector); |
| } else { |
| /* Legacy and MSI mode - this stops all interrupt handling */ |
| wr32(hw, I40E_PFINT_ICR0_ENA, 0); |
| wr32(hw, I40E_PFINT_DYN_CTL0, 0); |
| i40e_flush(hw); |
| synchronize_irq(pf->pdev->irq); |
| } |
| } |
| |
| /** |
| * i40e_vsi_enable_irq - Enable IRQ for the given VSI |
| * @vsi: the VSI being configured |
| **/ |
| static int i40e_vsi_enable_irq(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| int i; |
| |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) { |
| for (i = vsi->base_vector; |
| i < (vsi->num_q_vectors + vsi->base_vector); i++) |
| i40e_irq_dynamic_enable(vsi, i); |
| } else { |
| i40e_irq_dynamic_enable_icr0(pf); |
| } |
| |
| i40e_flush(&pf->hw); |
| return 0; |
| } |
| |
| /** |
| * i40e_stop_misc_vector - Stop the vector that handles non-queue events |
| * @pf: board private structure |
| **/ |
| static void i40e_stop_misc_vector(struct i40e_pf *pf) |
| { |
| /* Disable ICR 0 */ |
| wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0); |
| i40e_flush(&pf->hw); |
| } |
| |
| /** |
| * i40e_intr - MSI/Legacy and non-queue interrupt handler |
| * @irq: interrupt number |
| * @data: pointer to a q_vector |
| * |
| * This is the handler used for all MSI/Legacy interrupts, and deals |
| * with both queue and non-queue interrupts. This is also used in |
| * MSIX mode to handle the non-queue interrupts. |
| **/ |
| static irqreturn_t i40e_intr(int irq, void *data) |
| { |
| struct i40e_pf *pf = (struct i40e_pf *)data; |
| struct i40e_hw *hw = &pf->hw; |
| u32 icr0, icr0_remaining; |
| u32 val, ena_mask; |
| |
| icr0 = rd32(hw, I40E_PFINT_ICR0); |
| |
| val = rd32(hw, I40E_PFINT_DYN_CTL0); |
| val = val | I40E_PFINT_DYN_CTL0_CLEARPBA_MASK; |
| wr32(hw, I40E_PFINT_DYN_CTL0, val); |
| |
| /* if sharing a legacy IRQ, we might get called w/o an intr pending */ |
| if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0) |
| return IRQ_NONE; |
| |
| ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA); |
| |
| /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */ |
| if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) { |
| |
| /* temporarily disable queue cause for NAPI processing */ |
| u32 qval = rd32(hw, I40E_QINT_RQCTL(0)); |
| qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK; |
| wr32(hw, I40E_QINT_RQCTL(0), qval); |
| |
| qval = rd32(hw, I40E_QINT_TQCTL(0)); |
| qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK; |
| wr32(hw, I40E_QINT_TQCTL(0), qval); |
| |
| if (!test_bit(__I40E_DOWN, &pf->state)) |
| napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi); |
| } |
| |
| if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) { |
| ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK; |
| set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state); |
| } |
| |
| if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) { |
| ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK; |
| set_bit(__I40E_MDD_EVENT_PENDING, &pf->state); |
| } |
| |
| if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) { |
| ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK; |
| set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state); |
| } |
| |
| if (icr0 & I40E_PFINT_ICR0_GRST_MASK) { |
| if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) |
| set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state); |
| ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK; |
| val = rd32(hw, I40E_GLGEN_RSTAT); |
| val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK) |
| >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT; |
| if (val & I40E_RESET_CORER) |
| pf->corer_count++; |
| else if (val & I40E_RESET_GLOBR) |
| pf->globr_count++; |
| else if (val & I40E_RESET_EMPR) |
| pf->empr_count++; |
| } |
| |
| /* If a critical error is pending we have no choice but to reset the |
| * device. |
| * Report and mask out any remaining unexpected interrupts. |
| */ |
| icr0_remaining = icr0 & ena_mask; |
| if (icr0_remaining) { |
| dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n", |
| icr0_remaining); |
| if ((icr0_remaining & I40E_PFINT_ICR0_HMC_ERR_MASK) || |
| (icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) || |
| (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) || |
| (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK) || |
| (icr0_remaining & I40E_PFINT_ICR0_MAL_DETECT_MASK)) { |
| if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) { |
| dev_info(&pf->pdev->dev, "HMC error interrupt\n"); |
| } else { |
| dev_info(&pf->pdev->dev, "device will be reset\n"); |
| set_bit(__I40E_PF_RESET_REQUESTED, &pf->state); |
| i40e_service_event_schedule(pf); |
| } |
| } |
| ena_mask &= ~icr0_remaining; |
| } |
| |
| /* re-enable interrupt causes */ |
| wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask); |
| if (!test_bit(__I40E_DOWN, &pf->state)) { |
| i40e_service_event_schedule(pf); |
| i40e_irq_dynamic_enable_icr0(pf); |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| /** |
| * i40e_map_vector_to_qp - Assigns the queue pair to the vector |
| * @vsi: the VSI being configured |
| * @v_idx: vector index |
| * @qp_idx: queue pair index |
| **/ |
| static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx) |
| { |
| struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx]; |
| struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx]; |
| struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx]; |
| |
| tx_ring->q_vector = q_vector; |
| tx_ring->next = q_vector->tx.ring; |
| q_vector->tx.ring = tx_ring; |
| q_vector->tx.count++; |
| |
| rx_ring->q_vector = q_vector; |
| rx_ring->next = q_vector->rx.ring; |
| q_vector->rx.ring = rx_ring; |
| q_vector->rx.count++; |
| } |
| |
| /** |
| * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors |
| * @vsi: the VSI being configured |
| * |
| * This function maps descriptor rings to the queue-specific vectors |
| * we were allotted through the MSI-X enabling code. Ideally, we'd have |
| * one vector per queue pair, but on a constrained vector budget, we |
| * group the queue pairs as "efficiently" as possible. |
| **/ |
| static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi) |
| { |
| int qp_remaining = vsi->num_queue_pairs; |
| int q_vectors = vsi->num_q_vectors; |
| int num_ringpairs; |
| int v_start = 0; |
| int qp_idx = 0; |
| |
| /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to |
| * group them so there are multiple queues per vector. |
| */ |
| for (; v_start < q_vectors && qp_remaining; v_start++) { |
| struct i40e_q_vector *q_vector = vsi->q_vectors[v_start]; |
| |
| num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start); |
| |
| q_vector->num_ringpairs = num_ringpairs; |
| |
| q_vector->rx.count = 0; |
| q_vector->tx.count = 0; |
| q_vector->rx.ring = NULL; |
| q_vector->tx.ring = NULL; |
| |
| while (num_ringpairs--) { |
| map_vector_to_qp(vsi, v_start, qp_idx); |
| qp_idx++; |
| qp_remaining--; |
| } |
| } |
| } |
| |
| /** |
| * i40e_vsi_request_irq - Request IRQ from the OS |
| * @vsi: the VSI being configured |
| * @basename: name for the vector |
| **/ |
| static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename) |
| { |
| struct i40e_pf *pf = vsi->back; |
| int err; |
| |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) |
| err = i40e_vsi_request_irq_msix(vsi, basename); |
| else if (pf->flags & I40E_FLAG_MSI_ENABLED) |
| err = request_irq(pf->pdev->irq, i40e_intr, 0, |
| pf->misc_int_name, pf); |
| else |
| err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED, |
| pf->misc_int_name, pf); |
| |
| if (err) |
| dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err); |
| |
| return err; |
| } |
| |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| /** |
| * i40e_netpoll - A Polling 'interrupt'handler |
| * @netdev: network interface device structure |
| * |
| * This is used by netconsole to send skbs without having to re-enable |
| * interrupts. It's not called while the normal interrupt routine is executing. |
| **/ |
| static void i40e_netpoll(struct net_device *netdev) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| struct i40e_pf *pf = vsi->back; |
| int i; |
| |
| /* if interface is down do nothing */ |
| if (test_bit(__I40E_DOWN, &vsi->state)) |
| return; |
| |
| pf->flags |= I40E_FLAG_IN_NETPOLL; |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) { |
| for (i = 0; i < vsi->num_q_vectors; i++) |
| i40e_msix_clean_rings(0, vsi->q_vectors[i]); |
| } else { |
| i40e_intr(pf->pdev->irq, netdev); |
| } |
| pf->flags &= ~I40E_FLAG_IN_NETPOLL; |
| } |
| #endif |
| |
| /** |
| * i40e_vsi_control_tx - Start or stop a VSI's rings |
| * @vsi: the VSI being configured |
| * @enable: start or stop the rings |
| **/ |
| static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable) |
| { |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| int i, j, pf_q; |
| u32 tx_reg; |
| |
| pf_q = vsi->base_queue; |
| for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) { |
| j = 1000; |
| do { |
| usleep_range(1000, 2000); |
| tx_reg = rd32(hw, I40E_QTX_ENA(pf_q)); |
| } while (j-- && ((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) |
| ^ (tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT)) & 1); |
| |
| if (enable) { |
| /* is STAT set ? */ |
| if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) { |
| dev_info(&pf->pdev->dev, |
| "Tx %d already enabled\n", i); |
| continue; |
| } |
| } else { |
| /* is !STAT set ? */ |
| if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) { |
| dev_info(&pf->pdev->dev, |
| "Tx %d already disabled\n", i); |
| continue; |
| } |
| } |
| |
| /* turn on/off the queue */ |
| if (enable) |
| tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK | |
| I40E_QTX_ENA_QENA_STAT_MASK; |
| else |
| tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK; |
| |
| wr32(hw, I40E_QTX_ENA(pf_q), tx_reg); |
| |
| /* wait for the change to finish */ |
| for (j = 0; j < 10; j++) { |
| tx_reg = rd32(hw, I40E_QTX_ENA(pf_q)); |
| if (enable) { |
| if ((tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) |
| break; |
| } else { |
| if (!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK)) |
| break; |
| } |
| |
| udelay(10); |
| } |
| if (j >= 10) { |
| dev_info(&pf->pdev->dev, "Tx ring %d %sable timeout\n", |
| pf_q, (enable ? "en" : "dis")); |
| return -ETIMEDOUT; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_control_rx - Start or stop a VSI's rings |
| * @vsi: the VSI being configured |
| * @enable: start or stop the rings |
| **/ |
| static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable) |
| { |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| int i, j, pf_q; |
| u32 rx_reg; |
| |
| pf_q = vsi->base_queue; |
| for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) { |
| j = 1000; |
| do { |
| usleep_range(1000, 2000); |
| rx_reg = rd32(hw, I40E_QRX_ENA(pf_q)); |
| } while (j-- && ((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) |
| ^ (rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT)) & 1); |
| |
| if (enable) { |
| /* is STAT set ? */ |
| if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK)) |
| continue; |
| } else { |
| /* is !STAT set ? */ |
| if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK)) |
| continue; |
| } |
| |
| /* turn on/off the queue */ |
| if (enable) |
| rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK | |
| I40E_QRX_ENA_QENA_STAT_MASK; |
| else |
| rx_reg &= ~(I40E_QRX_ENA_QENA_REQ_MASK | |
| I40E_QRX_ENA_QENA_STAT_MASK); |
| wr32(hw, I40E_QRX_ENA(pf_q), rx_reg); |
| |
| /* wait for the change to finish */ |
| for (j = 0; j < 10; j++) { |
| rx_reg = rd32(hw, I40E_QRX_ENA(pf_q)); |
| |
| if (enable) { |
| if ((rx_reg & I40E_QRX_ENA_QENA_STAT_MASK)) |
| break; |
| } else { |
| if (!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK)) |
| break; |
| } |
| |
| udelay(10); |
| } |
| if (j >= 10) { |
| dev_info(&pf->pdev->dev, "Rx ring %d %sable timeout\n", |
| pf_q, (enable ? "en" : "dis")); |
| return -ETIMEDOUT; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_control_rings - Start or stop a VSI's rings |
| * @vsi: the VSI being configured |
| * @enable: start or stop the rings |
| **/ |
| static int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request) |
| { |
| int ret; |
| |
| /* do rx first for enable and last for disable */ |
| if (request) { |
| ret = i40e_vsi_control_rx(vsi, request); |
| if (ret) |
| return ret; |
| ret = i40e_vsi_control_tx(vsi, request); |
| } else { |
| ret = i40e_vsi_control_tx(vsi, request); |
| if (ret) |
| return ret; |
| ret = i40e_vsi_control_rx(vsi, request); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * i40e_vsi_free_irq - Free the irq association with the OS |
| * @vsi: the VSI being configured |
| **/ |
| static void i40e_vsi_free_irq(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| int base = vsi->base_vector; |
| u32 val, qp; |
| int i; |
| |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) { |
| if (!vsi->q_vectors) |
| return; |
| |
| for (i = 0; i < vsi->num_q_vectors; i++) { |
| u16 vector = i + base; |
| |
| /* free only the irqs that were actually requested */ |
| if (vsi->q_vectors[i]->num_ringpairs == 0) |
| continue; |
| |
| /* clear the affinity_mask in the IRQ descriptor */ |
| irq_set_affinity_hint(pf->msix_entries[vector].vector, |
| NULL); |
| free_irq(pf->msix_entries[vector].vector, |
| vsi->q_vectors[i]); |
| |
| /* Tear down the interrupt queue link list |
| * |
| * We know that they come in pairs and always |
| * the Rx first, then the Tx. To clear the |
| * link list, stick the EOL value into the |
| * next_q field of the registers. |
| */ |
| val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1)); |
| qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
| >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT; |
| val |= I40E_QUEUE_END_OF_LIST |
| << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT; |
| wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val); |
| |
| while (qp != I40E_QUEUE_END_OF_LIST) { |
| u32 next; |
| |
| val = rd32(hw, I40E_QINT_RQCTL(qp)); |
| |
| val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK | |
| I40E_QINT_RQCTL_MSIX0_INDX_MASK | |
| I40E_QINT_RQCTL_CAUSE_ENA_MASK | |
| I40E_QINT_RQCTL_INTEVENT_MASK); |
| |
| val |= (I40E_QINT_RQCTL_ITR_INDX_MASK | |
| I40E_QINT_RQCTL_NEXTQ_INDX_MASK); |
| |
| wr32(hw, I40E_QINT_RQCTL(qp), val); |
| |
| val = rd32(hw, I40E_QINT_TQCTL(qp)); |
| |
| next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK) |
| >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT; |
| |
| val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK | |
| I40E_QINT_TQCTL_MSIX0_INDX_MASK | |
| I40E_QINT_TQCTL_CAUSE_ENA_MASK | |
| I40E_QINT_TQCTL_INTEVENT_MASK); |
| |
| val |= (I40E_QINT_TQCTL_ITR_INDX_MASK | |
| I40E_QINT_TQCTL_NEXTQ_INDX_MASK); |
| |
| wr32(hw, I40E_QINT_TQCTL(qp), val); |
| qp = next; |
| } |
| } |
| } else { |
| free_irq(pf->pdev->irq, pf); |
| |
| val = rd32(hw, I40E_PFINT_LNKLST0); |
| qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK) |
| >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT; |
| val |= I40E_QUEUE_END_OF_LIST |
| << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT; |
| wr32(hw, I40E_PFINT_LNKLST0, val); |
| |
| val = rd32(hw, I40E_QINT_RQCTL(qp)); |
| val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK | |
| I40E_QINT_RQCTL_MSIX0_INDX_MASK | |
| I40E_QINT_RQCTL_CAUSE_ENA_MASK | |
| I40E_QINT_RQCTL_INTEVENT_MASK); |
| |
| val |= (I40E_QINT_RQCTL_ITR_INDX_MASK | |
| I40E_QINT_RQCTL_NEXTQ_INDX_MASK); |
| |
| wr32(hw, I40E_QINT_RQCTL(qp), val); |
| |
| val = rd32(hw, I40E_QINT_TQCTL(qp)); |
| |
| val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK | |
| I40E_QINT_TQCTL_MSIX0_INDX_MASK | |
| I40E_QINT_TQCTL_CAUSE_ENA_MASK | |
| I40E_QINT_TQCTL_INTEVENT_MASK); |
| |
| val |= (I40E_QINT_TQCTL_ITR_INDX_MASK | |
| I40E_QINT_TQCTL_NEXTQ_INDX_MASK); |
| |
| wr32(hw, I40E_QINT_TQCTL(qp), val); |
| } |
| } |
| |
| /** |
| * i40e_free_q_vector - Free memory allocated for specific interrupt vector |
| * @vsi: the VSI being configured |
| * @v_idx: Index of vector to be freed |
| * |
| * This function frees the memory allocated to the q_vector. In addition if |
| * NAPI is enabled it will delete any references to the NAPI struct prior |
| * to freeing the q_vector. |
| **/ |
| static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx) |
| { |
| struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx]; |
| struct i40e_ring *ring; |
| |
| if (!q_vector) |
| return; |
| |
| /* disassociate q_vector from rings */ |
| i40e_for_each_ring(ring, q_vector->tx) |
| ring->q_vector = NULL; |
| |
| i40e_for_each_ring(ring, q_vector->rx) |
| ring->q_vector = NULL; |
| |
| /* only VSI w/ an associated netdev is set up w/ NAPI */ |
| if (vsi->netdev) |
| netif_napi_del(&q_vector->napi); |
| |
| vsi->q_vectors[v_idx] = NULL; |
| |
| kfree_rcu(q_vector, rcu); |
| } |
| |
| /** |
| * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors |
| * @vsi: the VSI being un-configured |
| * |
| * This frees the memory allocated to the q_vectors and |
| * deletes references to the NAPI struct. |
| **/ |
| static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi) |
| { |
| int v_idx; |
| |
| for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++) |
| i40e_free_q_vector(vsi, v_idx); |
| } |
| |
| /** |
| * i40e_reset_interrupt_capability - Disable interrupt setup in OS |
| * @pf: board private structure |
| **/ |
| static void i40e_reset_interrupt_capability(struct i40e_pf *pf) |
| { |
| /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */ |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) { |
| pci_disable_msix(pf->pdev); |
| kfree(pf->msix_entries); |
| pf->msix_entries = NULL; |
| } else if (pf->flags & I40E_FLAG_MSI_ENABLED) { |
| pci_disable_msi(pf->pdev); |
| } |
| pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED); |
| } |
| |
| /** |
| * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings |
| * @pf: board private structure |
| * |
| * We go through and clear interrupt specific resources and reset the structure |
| * to pre-load conditions |
| **/ |
| static void i40e_clear_interrupt_scheme(struct i40e_pf *pf) |
| { |
| int i; |
| |
| i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1); |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) |
| if (pf->vsi[i]) |
| i40e_vsi_free_q_vectors(pf->vsi[i]); |
| i40e_reset_interrupt_capability(pf); |
| } |
| |
| /** |
| * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI |
| * @vsi: the VSI being configured |
| **/ |
| static void i40e_napi_enable_all(struct i40e_vsi *vsi) |
| { |
| int q_idx; |
| |
| if (!vsi->netdev) |
| return; |
| |
| for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) |
| napi_enable(&vsi->q_vectors[q_idx]->napi); |
| } |
| |
| /** |
| * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI |
| * @vsi: the VSI being configured |
| **/ |
| static void i40e_napi_disable_all(struct i40e_vsi *vsi) |
| { |
| int q_idx; |
| |
| if (!vsi->netdev) |
| return; |
| |
| for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) |
| napi_disable(&vsi->q_vectors[q_idx]->napi); |
| } |
| |
| /** |
| * i40e_quiesce_vsi - Pause a given VSI |
| * @vsi: the VSI being paused |
| **/ |
| static void i40e_quiesce_vsi(struct i40e_vsi *vsi) |
| { |
| if (test_bit(__I40E_DOWN, &vsi->state)) |
| return; |
| |
| set_bit(__I40E_NEEDS_RESTART, &vsi->state); |
| if (vsi->netdev && netif_running(vsi->netdev)) { |
| vsi->netdev->netdev_ops->ndo_stop(vsi->netdev); |
| } else { |
| set_bit(__I40E_DOWN, &vsi->state); |
| i40e_down(vsi); |
| } |
| } |
| |
| /** |
| * i40e_unquiesce_vsi - Resume a given VSI |
| * @vsi: the VSI being resumed |
| **/ |
| static void i40e_unquiesce_vsi(struct i40e_vsi *vsi) |
| { |
| if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state)) |
| return; |
| |
| clear_bit(__I40E_NEEDS_RESTART, &vsi->state); |
| if (vsi->netdev && netif_running(vsi->netdev)) |
| vsi->netdev->netdev_ops->ndo_open(vsi->netdev); |
| else |
| i40e_up(vsi); /* this clears the DOWN bit */ |
| } |
| |
| /** |
| * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF |
| * @pf: the PF |
| **/ |
| static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf) |
| { |
| int v; |
| |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| if (pf->vsi[v]) |
| i40e_quiesce_vsi(pf->vsi[v]); |
| } |
| } |
| |
| /** |
| * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF |
| * @pf: the PF |
| **/ |
| static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf) |
| { |
| int v; |
| |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| if (pf->vsi[v]) |
| i40e_unquiesce_vsi(pf->vsi[v]); |
| } |
| } |
| |
| /** |
| * i40e_dcb_get_num_tc - Get the number of TCs from DCBx config |
| * @dcbcfg: the corresponding DCBx configuration structure |
| * |
| * Return the number of TCs from given DCBx configuration |
| **/ |
| static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg) |
| { |
| u8 num_tc = 0; |
| int i; |
| |
| /* Scan the ETS Config Priority Table to find |
| * traffic class enabled for a given priority |
| * and use the traffic class index to get the |
| * number of traffic classes enabled |
| */ |
| for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { |
| if (dcbcfg->etscfg.prioritytable[i] > num_tc) |
| num_tc = dcbcfg->etscfg.prioritytable[i]; |
| } |
| |
| /* Traffic class index starts from zero so |
| * increment to return the actual count |
| */ |
| return num_tc + 1; |
| } |
| |
| /** |
| * i40e_dcb_get_enabled_tc - Get enabled traffic classes |
| * @dcbcfg: the corresponding DCBx configuration structure |
| * |
| * Query the current DCB configuration and return the number of |
| * traffic classes enabled from the given DCBX config |
| **/ |
| static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg) |
| { |
| u8 num_tc = i40e_dcb_get_num_tc(dcbcfg); |
| u8 enabled_tc = 1; |
| u8 i; |
| |
| for (i = 0; i < num_tc; i++) |
| enabled_tc |= 1 << i; |
| |
| return enabled_tc; |
| } |
| |
| /** |
| * i40e_pf_get_num_tc - Get enabled traffic classes for PF |
| * @pf: PF being queried |
| * |
| * Return number of traffic classes enabled for the given PF |
| **/ |
| static u8 i40e_pf_get_num_tc(struct i40e_pf *pf) |
| { |
| struct i40e_hw *hw = &pf->hw; |
| u8 i, enabled_tc; |
| u8 num_tc = 0; |
| struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config; |
| |
| /* If DCB is not enabled then always in single TC */ |
| if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) |
| return 1; |
| |
| /* MFP mode return count of enabled TCs for this PF */ |
| if (pf->flags & I40E_FLAG_MFP_ENABLED) { |
| enabled_tc = pf->hw.func_caps.enabled_tcmap; |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { |
| if (enabled_tc & (1 << i)) |
| num_tc++; |
| } |
| return num_tc; |
| } |
| |
| /* SFP mode will be enabled for all TCs on port */ |
| return i40e_dcb_get_num_tc(dcbcfg); |
| } |
| |
| /** |
| * i40e_pf_get_default_tc - Get bitmap for first enabled TC |
| * @pf: PF being queried |
| * |
| * Return a bitmap for first enabled traffic class for this PF. |
| **/ |
| static u8 i40e_pf_get_default_tc(struct i40e_pf *pf) |
| { |
| u8 enabled_tc = pf->hw.func_caps.enabled_tcmap; |
| u8 i = 0; |
| |
| if (!enabled_tc) |
| return 0x1; /* TC0 */ |
| |
| /* Find the first enabled TC */ |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { |
| if (enabled_tc & (1 << i)) |
| break; |
| } |
| |
| return 1 << i; |
| } |
| |
| /** |
| * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes |
| * @pf: PF being queried |
| * |
| * Return a bitmap for enabled traffic classes for this PF. |
| **/ |
| static u8 i40e_pf_get_tc_map(struct i40e_pf *pf) |
| { |
| /* If DCB is not enabled for this PF then just return default TC */ |
| if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) |
| return i40e_pf_get_default_tc(pf); |
| |
| /* MFP mode will have enabled TCs set by FW */ |
| if (pf->flags & I40E_FLAG_MFP_ENABLED) |
| return pf->hw.func_caps.enabled_tcmap; |
| |
| /* SFP mode we want PF to be enabled for all TCs */ |
| return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config); |
| } |
| |
| /** |
| * i40e_vsi_get_bw_info - Query VSI BW Information |
| * @vsi: the VSI being queried |
| * |
| * Returns 0 on success, negative value on failure |
| **/ |
| static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi) |
| { |
| struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0}; |
| struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0}; |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| i40e_status aq_ret; |
| u32 tc_bw_max; |
| int i; |
| |
| /* Get the VSI level BW configuration */ |
| aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL); |
| if (aq_ret) { |
| dev_info(&pf->pdev->dev, |
| "couldn't get pf vsi bw config, err %d, aq_err %d\n", |
| aq_ret, pf->hw.aq.asq_last_status); |
| return -EINVAL; |
| } |
| |
| /* Get the VSI level BW configuration per TC */ |
| aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config, |
| NULL); |
| if (aq_ret) { |
| dev_info(&pf->pdev->dev, |
| "couldn't get pf vsi ets bw config, err %d, aq_err %d\n", |
| aq_ret, pf->hw.aq.asq_last_status); |
| return -EINVAL; |
| } |
| |
| if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) { |
| dev_info(&pf->pdev->dev, |
| "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n", |
| bw_config.tc_valid_bits, |
| bw_ets_config.tc_valid_bits); |
| /* Still continuing */ |
| } |
| |
| vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit); |
| vsi->bw_max_quanta = bw_config.max_bw; |
| tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) | |
| (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16); |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { |
| vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i]; |
| vsi->bw_ets_limit_credits[i] = |
| le16_to_cpu(bw_ets_config.credits[i]); |
| /* 3 bits out of 4 for each TC */ |
| vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC |
| * @vsi: the VSI being configured |
| * @enabled_tc: TC bitmap |
| * @bw_credits: BW shared credits per TC |
| * |
| * Returns 0 on success, negative value on failure |
| **/ |
| static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc, |
| u8 *bw_share) |
| { |
| struct i40e_aqc_configure_vsi_tc_bw_data bw_data; |
| i40e_status aq_ret; |
| int i; |
| |
| bw_data.tc_valid_bits = enabled_tc; |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) |
| bw_data.tc_bw_credits[i] = bw_share[i]; |
| |
| aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data, |
| NULL); |
| if (aq_ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "%s: AQ command Config VSI BW allocation per TC failed = %d\n", |
| __func__, vsi->back->hw.aq.asq_last_status); |
| return -EINVAL; |
| } |
| |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) |
| vsi->info.qs_handle[i] = bw_data.qs_handles[i]; |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration |
| * @vsi: the VSI being configured |
| * @enabled_tc: TC map to be enabled |
| * |
| **/ |
| static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc) |
| { |
| struct net_device *netdev = vsi->netdev; |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| u8 netdev_tc = 0; |
| int i; |
| struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config; |
| |
| if (!netdev) |
| return; |
| |
| if (!enabled_tc) { |
| netdev_reset_tc(netdev); |
| return; |
| } |
| |
| /* Set up actual enabled TCs on the VSI */ |
| if (netdev_set_num_tc(netdev, vsi->tc_config.numtc)) |
| return; |
| |
| /* set per TC queues for the VSI */ |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { |
| /* Only set TC queues for enabled tcs |
| * |
| * e.g. For a VSI that has TC0 and TC3 enabled the |
| * enabled_tc bitmap would be 0x00001001; the driver |
| * will set the numtc for netdev as 2 that will be |
| * referenced by the netdev layer as TC 0 and 1. |
| */ |
| if (vsi->tc_config.enabled_tc & (1 << i)) |
| netdev_set_tc_queue(netdev, |
| vsi->tc_config.tc_info[i].netdev_tc, |
| vsi->tc_config.tc_info[i].qcount, |
| vsi->tc_config.tc_info[i].qoffset); |
| } |
| |
| /* Assign UP2TC map for the VSI */ |
| for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) { |
| /* Get the actual TC# for the UP */ |
| u8 ets_tc = dcbcfg->etscfg.prioritytable[i]; |
| /* Get the mapped netdev TC# for the UP */ |
| netdev_tc = vsi->tc_config.tc_info[ets_tc].netdev_tc; |
| netdev_set_prio_tc_map(netdev, i, netdev_tc); |
| } |
| } |
| |
| /** |
| * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map |
| * @vsi: the VSI being configured |
| * @ctxt: the ctxt buffer returned from AQ VSI update param command |
| **/ |
| static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi, |
| struct i40e_vsi_context *ctxt) |
| { |
| /* copy just the sections touched not the entire info |
| * since not all sections are valid as returned by |
| * update vsi params |
| */ |
| vsi->info.mapping_flags = ctxt->info.mapping_flags; |
| memcpy(&vsi->info.queue_mapping, |
| &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping)); |
| memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping, |
| sizeof(vsi->info.tc_mapping)); |
| } |
| |
| /** |
| * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map |
| * @vsi: VSI to be configured |
| * @enabled_tc: TC bitmap |
| * |
| * This configures a particular VSI for TCs that are mapped to the |
| * given TC bitmap. It uses default bandwidth share for TCs across |
| * VSIs to configure TC for a particular VSI. |
| * |
| * NOTE: |
| * It is expected that the VSI queues have been quisced before calling |
| * this function. |
| **/ |
| static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc) |
| { |
| u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0}; |
| struct i40e_vsi_context ctxt; |
| int ret = 0; |
| int i; |
| |
| /* Check if enabled_tc is same as existing or new TCs */ |
| if (vsi->tc_config.enabled_tc == enabled_tc) |
| return ret; |
| |
| /* Enable ETS TCs with equal BW Share for now across all VSIs */ |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { |
| if (enabled_tc & (1 << i)) |
| bw_share[i] = 1; |
| } |
| |
| ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share); |
| if (ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "Failed configuring TC map %d for VSI %d\n", |
| enabled_tc, vsi->seid); |
| goto out; |
| } |
| |
| /* Update Queue Pairs Mapping for currently enabled UPs */ |
| ctxt.seid = vsi->seid; |
| ctxt.pf_num = vsi->back->hw.pf_id; |
| ctxt.vf_num = 0; |
| ctxt.uplink_seid = vsi->uplink_seid; |
| memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info)); |
| i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false); |
| |
| /* Update the VSI after updating the VSI queue-mapping information */ |
| ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL); |
| if (ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "update vsi failed, aq_err=%d\n", |
| vsi->back->hw.aq.asq_last_status); |
| goto out; |
| } |
| /* update the local VSI info with updated queue map */ |
| i40e_vsi_update_queue_map(vsi, &ctxt); |
| vsi->info.valid_sections = 0; |
| |
| /* Update current VSI BW information */ |
| ret = i40e_vsi_get_bw_info(vsi); |
| if (ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "Failed updating vsi bw info, aq_err=%d\n", |
| vsi->back->hw.aq.asq_last_status); |
| goto out; |
| } |
| |
| /* Update the netdev TC setup */ |
| i40e_vsi_config_netdev_tc(vsi, enabled_tc); |
| out: |
| return ret; |
| } |
| |
| /** |
| * i40e_up_complete - Finish the last steps of bringing up a connection |
| * @vsi: the VSI being configured |
| **/ |
| static int i40e_up_complete(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| int err; |
| |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) |
| i40e_vsi_configure_msix(vsi); |
| else |
| i40e_configure_msi_and_legacy(vsi); |
| |
| /* start rings */ |
| err = i40e_vsi_control_rings(vsi, true); |
| if (err) |
| return err; |
| |
| clear_bit(__I40E_DOWN, &vsi->state); |
| i40e_napi_enable_all(vsi); |
| i40e_vsi_enable_irq(vsi); |
| |
| if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) && |
| (vsi->netdev)) { |
| netdev_info(vsi->netdev, "NIC Link is Up\n"); |
| netif_tx_start_all_queues(vsi->netdev); |
| netif_carrier_on(vsi->netdev); |
| } else if (vsi->netdev) { |
| netdev_info(vsi->netdev, "NIC Link is Down\n"); |
| } |
| i40e_service_event_schedule(pf); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_reinit_locked - Reset the VSI |
| * @vsi: the VSI being configured |
| * |
| * Rebuild the ring structs after some configuration |
| * has changed, e.g. MTU size. |
| **/ |
| static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| |
| WARN_ON(in_interrupt()); |
| while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state)) |
| usleep_range(1000, 2000); |
| i40e_down(vsi); |
| |
| /* Give a VF some time to respond to the reset. The |
| * two second wait is based upon the watchdog cycle in |
| * the VF driver. |
| */ |
| if (vsi->type == I40E_VSI_SRIOV) |
| msleep(2000); |
| i40e_up(vsi); |
| clear_bit(__I40E_CONFIG_BUSY, &pf->state); |
| } |
| |
| /** |
| * i40e_up - Bring the connection back up after being down |
| * @vsi: the VSI being configured |
| **/ |
| int i40e_up(struct i40e_vsi *vsi) |
| { |
| int err; |
| |
| err = i40e_vsi_configure(vsi); |
| if (!err) |
| err = i40e_up_complete(vsi); |
| |
| return err; |
| } |
| |
| /** |
| * i40e_down - Shutdown the connection processing |
| * @vsi: the VSI being stopped |
| **/ |
| void i40e_down(struct i40e_vsi *vsi) |
| { |
| int i; |
| |
| /* It is assumed that the caller of this function |
| * sets the vsi->state __I40E_DOWN bit. |
| */ |
| if (vsi->netdev) { |
| netif_carrier_off(vsi->netdev); |
| netif_tx_disable(vsi->netdev); |
| } |
| i40e_vsi_disable_irq(vsi); |
| i40e_vsi_control_rings(vsi, false); |
| i40e_napi_disable_all(vsi); |
| |
| for (i = 0; i < vsi->num_queue_pairs; i++) { |
| i40e_clean_tx_ring(vsi->tx_rings[i]); |
| i40e_clean_rx_ring(vsi->rx_rings[i]); |
| } |
| } |
| |
| /** |
| * i40e_setup_tc - configure multiple traffic classes |
| * @netdev: net device to configure |
| * @tc: number of traffic classes to enable |
| **/ |
| static int i40e_setup_tc(struct net_device *netdev, u8 tc) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| struct i40e_pf *pf = vsi->back; |
| u8 enabled_tc = 0; |
| int ret = -EINVAL; |
| int i; |
| |
| /* Check if DCB enabled to continue */ |
| if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) { |
| netdev_info(netdev, "DCB is not enabled for adapter\n"); |
| goto exit; |
| } |
| |
| /* Check if MFP enabled */ |
| if (pf->flags & I40E_FLAG_MFP_ENABLED) { |
| netdev_info(netdev, "Configuring TC not supported in MFP mode\n"); |
| goto exit; |
| } |
| |
| /* Check whether tc count is within enabled limit */ |
| if (tc > i40e_pf_get_num_tc(pf)) { |
| netdev_info(netdev, "TC count greater than enabled on link for adapter\n"); |
| goto exit; |
| } |
| |
| /* Generate TC map for number of tc requested */ |
| for (i = 0; i < tc; i++) |
| enabled_tc |= (1 << i); |
| |
| /* Requesting same TC configuration as already enabled */ |
| if (enabled_tc == vsi->tc_config.enabled_tc) |
| return 0; |
| |
| /* Quiesce VSI queues */ |
| i40e_quiesce_vsi(vsi); |
| |
| /* Configure VSI for enabled TCs */ |
| ret = i40e_vsi_config_tc(vsi, enabled_tc); |
| if (ret) { |
| netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n", |
| vsi->seid); |
| goto exit; |
| } |
| |
| /* Unquiesce VSI */ |
| i40e_unquiesce_vsi(vsi); |
| |
| exit: |
| return ret; |
| } |
| |
| /** |
| * i40e_open - Called when a network interface is made active |
| * @netdev: network interface device structure |
| * |
| * The open entry point is called when a network interface is made |
| * active by the system (IFF_UP). At this point all resources needed |
| * for transmit and receive operations are allocated, the interrupt |
| * handler is registered with the OS, the netdev watchdog subtask is |
| * enabled, and the stack is notified that the interface is ready. |
| * |
| * Returns 0 on success, negative value on failure |
| **/ |
| static int i40e_open(struct net_device *netdev) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| struct i40e_pf *pf = vsi->back; |
| char int_name[IFNAMSIZ]; |
| int err; |
| |
| /* disallow open during test */ |
| if (test_bit(__I40E_TESTING, &pf->state)) |
| return -EBUSY; |
| |
| netif_carrier_off(netdev); |
| |
| /* allocate descriptors */ |
| err = i40e_vsi_setup_tx_resources(vsi); |
| if (err) |
| goto err_setup_tx; |
| err = i40e_vsi_setup_rx_resources(vsi); |
| if (err) |
| goto err_setup_rx; |
| |
| err = i40e_vsi_configure(vsi); |
| if (err) |
| goto err_setup_rx; |
| |
| snprintf(int_name, sizeof(int_name) - 1, "%s-%s", |
| dev_driver_string(&pf->pdev->dev), netdev->name); |
| err = i40e_vsi_request_irq(vsi, int_name); |
| if (err) |
| goto err_setup_rx; |
| |
| err = i40e_up_complete(vsi); |
| if (err) |
| goto err_up_complete; |
| |
| if ((vsi->type == I40E_VSI_MAIN) || (vsi->type == I40E_VSI_VMDQ2)) { |
| err = i40e_aq_set_vsi_broadcast(&pf->hw, vsi->seid, true, NULL); |
| if (err) |
| netdev_info(netdev, |
| "couldn't set broadcast err %d aq_err %d\n", |
| err, pf->hw.aq.asq_last_status); |
| } |
| |
| return 0; |
| |
| err_up_complete: |
| i40e_down(vsi); |
| i40e_vsi_free_irq(vsi); |
| err_setup_rx: |
| i40e_vsi_free_rx_resources(vsi); |
| err_setup_tx: |
| i40e_vsi_free_tx_resources(vsi); |
| if (vsi == pf->vsi[pf->lan_vsi]) |
| i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED)); |
| |
| return err; |
| } |
| |
| /** |
| * i40e_close - Disables a network interface |
| * @netdev: network interface device structure |
| * |
| * The close entry point is called when an interface is de-activated |
| * by the OS. The hardware is still under the driver's control, but |
| * this netdev interface is disabled. |
| * |
| * Returns 0, this is not allowed to fail |
| **/ |
| static int i40e_close(struct net_device *netdev) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| |
| if (test_and_set_bit(__I40E_DOWN, &vsi->state)) |
| return 0; |
| |
| i40e_down(vsi); |
| i40e_vsi_free_irq(vsi); |
| |
| i40e_vsi_free_tx_resources(vsi); |
| i40e_vsi_free_rx_resources(vsi); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_do_reset - Start a PF or Core Reset sequence |
| * @pf: board private structure |
| * @reset_flags: which reset is requested |
| * |
| * The essential difference in resets is that the PF Reset |
| * doesn't clear the packet buffers, doesn't reset the PE |
| * firmware, and doesn't bother the other PFs on the chip. |
| **/ |
| void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags) |
| { |
| u32 val; |
| |
| WARN_ON(in_interrupt()); |
| |
| /* do the biggest reset indicated */ |
| if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) { |
| |
| /* Request a Global Reset |
| * |
| * This will start the chip's countdown to the actual full |
| * chip reset event, and a warning interrupt to be sent |
| * to all PFs, including the requestor. Our handler |
| * for the warning interrupt will deal with the shutdown |
| * and recovery of the switch setup. |
| */ |
| dev_info(&pf->pdev->dev, "GlobalR requested\n"); |
| val = rd32(&pf->hw, I40E_GLGEN_RTRIG); |
| val |= I40E_GLGEN_RTRIG_GLOBR_MASK; |
| wr32(&pf->hw, I40E_GLGEN_RTRIG, val); |
| |
| } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) { |
| |
| /* Request a Core Reset |
| * |
| * Same as Global Reset, except does *not* include the MAC/PHY |
| */ |
| dev_info(&pf->pdev->dev, "CoreR requested\n"); |
| val = rd32(&pf->hw, I40E_GLGEN_RTRIG); |
| val |= I40E_GLGEN_RTRIG_CORER_MASK; |
| wr32(&pf->hw, I40E_GLGEN_RTRIG, val); |
| i40e_flush(&pf->hw); |
| |
| } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) { |
| |
| /* Request a PF Reset |
| * |
| * Resets only the PF-specific registers |
| * |
| * This goes directly to the tear-down and rebuild of |
| * the switch, since we need to do all the recovery as |
| * for the Core Reset. |
| */ |
| dev_info(&pf->pdev->dev, "PFR requested\n"); |
| i40e_handle_reset_warning(pf); |
| |
| } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) { |
| int v; |
| |
| /* Find the VSI(s) that requested a re-init */ |
| dev_info(&pf->pdev->dev, |
| "VSI reinit requested\n"); |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| struct i40e_vsi *vsi = pf->vsi[v]; |
| if (vsi != NULL && |
| test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) { |
| i40e_vsi_reinit_locked(pf->vsi[v]); |
| clear_bit(__I40E_REINIT_REQUESTED, &vsi->state); |
| } |
| } |
| |
| /* no further action needed, so return now */ |
| return; |
| } else { |
| dev_info(&pf->pdev->dev, |
| "bad reset request 0x%08x\n", reset_flags); |
| return; |
| } |
| } |
| |
| /** |
| * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event |
| * @pf: board private structure |
| * @e: event info posted on ARQ |
| * |
| * Handler for LAN Queue Overflow Event generated by the firmware for PF |
| * and VF queues |
| **/ |
| static void i40e_handle_lan_overflow_event(struct i40e_pf *pf, |
| struct i40e_arq_event_info *e) |
| { |
| struct i40e_aqc_lan_overflow *data = |
| (struct i40e_aqc_lan_overflow *)&e->desc.params.raw; |
| u32 queue = le32_to_cpu(data->prtdcb_rupto); |
| u32 qtx_ctl = le32_to_cpu(data->otx_ctl); |
| struct i40e_hw *hw = &pf->hw; |
| struct i40e_vf *vf; |
| u16 vf_id; |
| |
| dev_info(&pf->pdev->dev, "%s: Rx Queue Number = %d QTX_CTL=0x%08x\n", |
| __func__, queue, qtx_ctl); |
| |
| /* Queue belongs to VF, find the VF and issue VF reset */ |
| if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK) |
| >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) { |
| vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK) |
| >> I40E_QTX_CTL_VFVM_INDX_SHIFT); |
| vf_id -= hw->func_caps.vf_base_id; |
| vf = &pf->vf[vf_id]; |
| i40e_vc_notify_vf_reset(vf); |
| /* Allow VF to process pending reset notification */ |
| msleep(20); |
| i40e_reset_vf(vf, false); |
| } |
| } |
| |
| /** |
| * i40e_service_event_complete - Finish up the service event |
| * @pf: board private structure |
| **/ |
| static void i40e_service_event_complete(struct i40e_pf *pf) |
| { |
| BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state)); |
| |
| /* flush memory to make sure state is correct before next watchog */ |
| smp_mb__before_clear_bit(); |
| clear_bit(__I40E_SERVICE_SCHED, &pf->state); |
| } |
| |
| /** |
| * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table |
| * @pf: board private structure |
| **/ |
| static void i40e_fdir_reinit_subtask(struct i40e_pf *pf) |
| { |
| if (!(pf->flags & I40E_FLAG_FDIR_REQUIRES_REINIT)) |
| return; |
| |
| pf->flags &= ~I40E_FLAG_FDIR_REQUIRES_REINIT; |
| |
| /* if interface is down do nothing */ |
| if (test_bit(__I40E_DOWN, &pf->state)) |
| return; |
| } |
| |
| /** |
| * i40e_vsi_link_event - notify VSI of a link event |
| * @vsi: vsi to be notified |
| * @link_up: link up or down |
| **/ |
| static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up) |
| { |
| if (!vsi) |
| return; |
| |
| switch (vsi->type) { |
| case I40E_VSI_MAIN: |
| if (!vsi->netdev || !vsi->netdev_registered) |
| break; |
| |
| if (link_up) { |
| netif_carrier_on(vsi->netdev); |
| netif_tx_wake_all_queues(vsi->netdev); |
| } else { |
| netif_carrier_off(vsi->netdev); |
| netif_tx_stop_all_queues(vsi->netdev); |
| } |
| break; |
| |
| case I40E_VSI_SRIOV: |
| break; |
| |
| case I40E_VSI_VMDQ2: |
| case I40E_VSI_CTRL: |
| case I40E_VSI_MIRROR: |
| default: |
| /* there is no notification for other VSIs */ |
| break; |
| } |
| } |
| |
| /** |
| * i40e_veb_link_event - notify elements on the veb of a link event |
| * @veb: veb to be notified |
| * @link_up: link up or down |
| **/ |
| static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up) |
| { |
| struct i40e_pf *pf; |
| int i; |
| |
| if (!veb || !veb->pf) |
| return; |
| pf = veb->pf; |
| |
| /* depth first... */ |
| for (i = 0; i < I40E_MAX_VEB; i++) |
| if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid)) |
| i40e_veb_link_event(pf->veb[i], link_up); |
| |
| /* ... now the local VSIs */ |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) |
| if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid)) |
| i40e_vsi_link_event(pf->vsi[i], link_up); |
| } |
| |
| /** |
| * i40e_link_event - Update netif_carrier status |
| * @pf: board private structure |
| **/ |
| static void i40e_link_event(struct i40e_pf *pf) |
| { |
| bool new_link, old_link; |
| |
| new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP); |
| old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP); |
| |
| if (new_link == old_link) |
| return; |
| |
| if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state)) |
| netdev_info(pf->vsi[pf->lan_vsi]->netdev, |
| "NIC Link is %s\n", (new_link ? "Up" : "Down")); |
| |
| /* Notify the base of the switch tree connected to |
| * the link. Floating VEBs are not notified. |
| */ |
| if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb]) |
| i40e_veb_link_event(pf->veb[pf->lan_veb], new_link); |
| else |
| i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link); |
| |
| if (pf->vf) |
| i40e_vc_notify_link_state(pf); |
| } |
| |
| /** |
| * i40e_check_hang_subtask - Check for hung queues and dropped interrupts |
| * @pf: board private structure |
| * |
| * Set the per-queue flags to request a check for stuck queues in the irq |
| * clean functions, then force interrupts to be sure the irq clean is called. |
| **/ |
| static void i40e_check_hang_subtask(struct i40e_pf *pf) |
| { |
| int i, v; |
| |
| /* If we're down or resetting, just bail */ |
| if (test_bit(__I40E_CONFIG_BUSY, &pf->state)) |
| return; |
| |
| /* for each VSI/netdev |
| * for each Tx queue |
| * set the check flag |
| * for each q_vector |
| * force an interrupt |
| */ |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| struct i40e_vsi *vsi = pf->vsi[v]; |
| int armed = 0; |
| |
| if (!pf->vsi[v] || |
| test_bit(__I40E_DOWN, &vsi->state) || |
| (vsi->netdev && !netif_carrier_ok(vsi->netdev))) |
| continue; |
| |
| for (i = 0; i < vsi->num_queue_pairs; i++) { |
| set_check_for_tx_hang(vsi->tx_rings[i]); |
| if (test_bit(__I40E_HANG_CHECK_ARMED, |
| &vsi->tx_rings[i]->state)) |
| armed++; |
| } |
| |
| if (armed) { |
| if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) { |
| wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0, |
| (I40E_PFINT_DYN_CTL0_INTENA_MASK | |
| I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK)); |
| } else { |
| u16 vec = vsi->base_vector - 1; |
| u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK | |
| I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK); |
| for (i = 0; i < vsi->num_q_vectors; i++, vec++) |
| wr32(&vsi->back->hw, |
| I40E_PFINT_DYN_CTLN(vec), val); |
| } |
| i40e_flush(&vsi->back->hw); |
| } |
| } |
| } |
| |
| /** |
| * i40e_watchdog_subtask - Check and bring link up |
| * @pf: board private structure |
| **/ |
| static void i40e_watchdog_subtask(struct i40e_pf *pf) |
| { |
| int i; |
| |
| /* if interface is down do nothing */ |
| if (test_bit(__I40E_DOWN, &pf->state) || |
| test_bit(__I40E_CONFIG_BUSY, &pf->state)) |
| return; |
| |
| /* Update the stats for active netdevs so the network stack |
| * can look at updated numbers whenever it cares to |
| */ |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) |
| if (pf->vsi[i] && pf->vsi[i]->netdev) |
| i40e_update_stats(pf->vsi[i]); |
| |
| /* Update the stats for the active switching components */ |
| for (i = 0; i < I40E_MAX_VEB; i++) |
| if (pf->veb[i]) |
| i40e_update_veb_stats(pf->veb[i]); |
| } |
| |
| /** |
| * i40e_reset_subtask - Set up for resetting the device and driver |
| * @pf: board private structure |
| **/ |
| static void i40e_reset_subtask(struct i40e_pf *pf) |
| { |
| u32 reset_flags = 0; |
| |
| if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) { |
| reset_flags |= (1 << __I40E_REINIT_REQUESTED); |
| clear_bit(__I40E_REINIT_REQUESTED, &pf->state); |
| } |
| if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) { |
| reset_flags |= (1 << __I40E_PF_RESET_REQUESTED); |
| clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state); |
| } |
| if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) { |
| reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED); |
| clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state); |
| } |
| if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) { |
| reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED); |
| clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state); |
| } |
| |
| /* If there's a recovery already waiting, it takes |
| * precedence before starting a new reset sequence. |
| */ |
| if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) { |
| i40e_handle_reset_warning(pf); |
| return; |
| } |
| |
| /* If we're already down or resetting, just bail */ |
| if (reset_flags && |
| !test_bit(__I40E_DOWN, &pf->state) && |
| !test_bit(__I40E_CONFIG_BUSY, &pf->state)) |
| i40e_do_reset(pf, reset_flags); |
| } |
| |
| /** |
| * i40e_handle_link_event - Handle link event |
| * @pf: board private structure |
| * @e: event info posted on ARQ |
| **/ |
| static void i40e_handle_link_event(struct i40e_pf *pf, |
| struct i40e_arq_event_info *e) |
| { |
| struct i40e_hw *hw = &pf->hw; |
| struct i40e_aqc_get_link_status *status = |
| (struct i40e_aqc_get_link_status *)&e->desc.params.raw; |
| struct i40e_link_status *hw_link_info = &hw->phy.link_info; |
| |
| /* save off old link status information */ |
| memcpy(&pf->hw.phy.link_info_old, hw_link_info, |
| sizeof(pf->hw.phy.link_info_old)); |
| |
| /* update link status */ |
| hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type; |
| hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed; |
| hw_link_info->link_info = status->link_info; |
| hw_link_info->an_info = status->an_info; |
| hw_link_info->ext_info = status->ext_info; |
| hw_link_info->lse_enable = |
| le16_to_cpu(status->command_flags) & |
| I40E_AQ_LSE_ENABLE; |
| |
| /* process the event */ |
| i40e_link_event(pf); |
| |
| /* Do a new status request to re-enable LSE reporting |
| * and load new status information into the hw struct, |
| * then see if the status changed while processing the |
| * initial event. |
| */ |
| i40e_aq_get_link_info(&pf->hw, true, NULL, NULL); |
| i40e_link_event(pf); |
| } |
| |
| /** |
| * i40e_clean_adminq_subtask - Clean the AdminQ rings |
| * @pf: board private structure |
| **/ |
| static void i40e_clean_adminq_subtask(struct i40e_pf *pf) |
| { |
| struct i40e_arq_event_info event; |
| struct i40e_hw *hw = &pf->hw; |
| u16 pending, i = 0; |
| i40e_status ret; |
| u16 opcode; |
| u32 val; |
| |
| if (!test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)) |
| return; |
| |
| event.msg_size = I40E_MAX_AQ_BUF_SIZE; |
| event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL); |
| if (!event.msg_buf) |
| return; |
| |
| do { |
| ret = i40e_clean_arq_element(hw, &event, &pending); |
| if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK) { |
| dev_info(&pf->pdev->dev, "No ARQ event found\n"); |
| break; |
| } else if (ret) { |
| dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret); |
| break; |
| } |
| |
| opcode = le16_to_cpu(event.desc.opcode); |
| switch (opcode) { |
| |
| case i40e_aqc_opc_get_link_status: |
| i40e_handle_link_event(pf, &event); |
| break; |
| case i40e_aqc_opc_send_msg_to_pf: |
| ret = i40e_vc_process_vf_msg(pf, |
| le16_to_cpu(event.desc.retval), |
| le32_to_cpu(event.desc.cookie_high), |
| le32_to_cpu(event.desc.cookie_low), |
| event.msg_buf, |
| event.msg_size); |
| break; |
| case i40e_aqc_opc_lldp_update_mib: |
| dev_info(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n"); |
| break; |
| case i40e_aqc_opc_event_lan_overflow: |
| dev_info(&pf->pdev->dev, "ARQ LAN queue overflow event received\n"); |
| i40e_handle_lan_overflow_event(pf, &event); |
| break; |
| default: |
| dev_info(&pf->pdev->dev, |
| "ARQ Error: Unknown event %d received\n", |
| event.desc.opcode); |
| break; |
| } |
| } while (pending && (i++ < pf->adminq_work_limit)); |
| |
| clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state); |
| /* re-enable Admin queue interrupt cause */ |
| val = rd32(hw, I40E_PFINT_ICR0_ENA); |
| val |= I40E_PFINT_ICR0_ENA_ADMINQ_MASK; |
| wr32(hw, I40E_PFINT_ICR0_ENA, val); |
| i40e_flush(hw); |
| |
| kfree(event.msg_buf); |
| } |
| |
| /** |
| * i40e_reconstitute_veb - rebuild the VEB and anything connected to it |
| * @veb: pointer to the VEB instance |
| * |
| * This is a recursive function that first builds the attached VSIs then |
| * recurses in to build the next layer of VEB. We track the connections |
| * through our own index numbers because the seid's from the HW could |
| * change across the reset. |
| **/ |
| static int i40e_reconstitute_veb(struct i40e_veb *veb) |
| { |
| struct i40e_vsi *ctl_vsi = NULL; |
| struct i40e_pf *pf = veb->pf; |
| int v, veb_idx; |
| int ret; |
| |
| /* build VSI that owns this VEB, temporarily attached to base VEB */ |
| for (v = 0; v < pf->hw.func_caps.num_vsis && !ctl_vsi; v++) { |
| if (pf->vsi[v] && |
| pf->vsi[v]->veb_idx == veb->idx && |
| pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) { |
| ctl_vsi = pf->vsi[v]; |
| break; |
| } |
| } |
| if (!ctl_vsi) { |
| dev_info(&pf->pdev->dev, |
| "missing owner VSI for veb_idx %d\n", veb->idx); |
| ret = -ENOENT; |
| goto end_reconstitute; |
| } |
| if (ctl_vsi != pf->vsi[pf->lan_vsi]) |
| ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid; |
| ret = i40e_add_vsi(ctl_vsi); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "rebuild of owner VSI failed: %d\n", ret); |
| goto end_reconstitute; |
| } |
| i40e_vsi_reset_stats(ctl_vsi); |
| |
| /* create the VEB in the switch and move the VSI onto the VEB */ |
| ret = i40e_add_veb(veb, ctl_vsi); |
| if (ret) |
| goto end_reconstitute; |
| |
| /* create the remaining VSIs attached to this VEB */ |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi) |
| continue; |
| |
| if (pf->vsi[v]->veb_idx == veb->idx) { |
| struct i40e_vsi *vsi = pf->vsi[v]; |
| vsi->uplink_seid = veb->seid; |
| ret = i40e_add_vsi(vsi); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "rebuild of vsi_idx %d failed: %d\n", |
| v, ret); |
| goto end_reconstitute; |
| } |
| i40e_vsi_reset_stats(vsi); |
| } |
| } |
| |
| /* create any VEBs attached to this VEB - RECURSION */ |
| for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) { |
| if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) { |
| pf->veb[veb_idx]->uplink_seid = veb->seid; |
| ret = i40e_reconstitute_veb(pf->veb[veb_idx]); |
| if (ret) |
| break; |
| } |
| } |
| |
| end_reconstitute: |
| return ret; |
| } |
| |
| /** |
| * i40e_get_capabilities - get info about the HW |
| * @pf: the PF struct |
| **/ |
| static int i40e_get_capabilities(struct i40e_pf *pf) |
| { |
| struct i40e_aqc_list_capabilities_element_resp *cap_buf; |
| u16 data_size; |
| int buf_len; |
| int err; |
| |
| buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp); |
| do { |
| cap_buf = kzalloc(buf_len, GFP_KERNEL); |
| if (!cap_buf) |
| return -ENOMEM; |
| |
| /* this loads the data into the hw struct for us */ |
| err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len, |
| &data_size, |
| i40e_aqc_opc_list_func_capabilities, |
| NULL); |
| /* data loaded, buffer no longer needed */ |
| kfree(cap_buf); |
| |
| if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) { |
| /* retry with a larger buffer */ |
| buf_len = data_size; |
| } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) { |
| dev_info(&pf->pdev->dev, |
| "capability discovery failed: aq=%d\n", |
| pf->hw.aq.asq_last_status); |
| return -ENODEV; |
| } |
| } while (err); |
| |
| if (pf->hw.debug_mask & I40E_DEBUG_USER) |
| dev_info(&pf->pdev->dev, |
| "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n", |
| pf->hw.pf_id, pf->hw.func_caps.num_vfs, |
| pf->hw.func_caps.num_msix_vectors, |
| pf->hw.func_caps.num_msix_vectors_vf, |
| pf->hw.func_caps.fd_filters_guaranteed, |
| pf->hw.func_caps.fd_filters_best_effort, |
| pf->hw.func_caps.num_tx_qp, |
| pf->hw.func_caps.num_vsis); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_fdir_setup - initialize the Flow Director resources |
| * @pf: board private structure |
| **/ |
| static void i40e_fdir_setup(struct i40e_pf *pf) |
| { |
| struct i40e_vsi *vsi; |
| bool new_vsi = false; |
| int err, i; |
| |
| if (!(pf->flags & (I40E_FLAG_FDIR_ENABLED | |
| I40E_FLAG_FDIR_ATR_ENABLED))) |
| return; |
| |
| pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE; |
| |
| /* find existing or make new FDIR VSI */ |
| vsi = NULL; |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) |
| if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) |
| vsi = pf->vsi[i]; |
| if (!vsi) { |
| vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR, pf->mac_seid, 0); |
| if (!vsi) { |
| dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n"); |
| pf->flags &= ~I40E_FLAG_FDIR_ENABLED; |
| return; |
| } |
| new_vsi = true; |
| } |
| WARN_ON(vsi->base_queue != I40E_FDIR_RING); |
| i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_rings); |
| |
| err = i40e_vsi_setup_tx_resources(vsi); |
| if (!err) |
| err = i40e_vsi_setup_rx_resources(vsi); |
| if (!err) |
| err = i40e_vsi_configure(vsi); |
| if (!err && new_vsi) { |
| char int_name[IFNAMSIZ + 9]; |
| snprintf(int_name, sizeof(int_name) - 1, "%s-fdir", |
| dev_driver_string(&pf->pdev->dev)); |
| err = i40e_vsi_request_irq(vsi, int_name); |
| } |
| if (!err) |
| err = i40e_up_complete(vsi); |
| |
| clear_bit(__I40E_NEEDS_RESTART, &vsi->state); |
| } |
| |
| /** |
| * i40e_fdir_teardown - release the Flow Director resources |
| * @pf: board private structure |
| **/ |
| static void i40e_fdir_teardown(struct i40e_pf *pf) |
| { |
| int i; |
| |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) { |
| if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) { |
| i40e_vsi_release(pf->vsi[i]); |
| break; |
| } |
| } |
| } |
| |
| /** |
| * i40e_handle_reset_warning - prep for the core to reset |
| * @pf: board private structure |
| * |
| * Close up the VFs and other things in prep for a Core Reset, |
| * then get ready to rebuild the world. |
| **/ |
| static void i40e_handle_reset_warning(struct i40e_pf *pf) |
| { |
| struct i40e_driver_version dv; |
| struct i40e_hw *hw = &pf->hw; |
| i40e_status ret; |
| u32 v; |
| |
| clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state); |
| if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) |
| return; |
| |
| dev_info(&pf->pdev->dev, "Tearing down internal switch for reset\n"); |
| |
| i40e_vc_notify_reset(pf); |
| |
| /* quiesce the VSIs and their queues that are not already DOWN */ |
| i40e_pf_quiesce_all_vsi(pf); |
| |
| for (v = 0; v < pf->hw.func_caps.num_vsis; v++) { |
| if (pf->vsi[v]) |
| pf->vsi[v]->seid = 0; |
| } |
| |
| i40e_shutdown_adminq(&pf->hw); |
| |
| /* Now we wait for GRST to settle out. |
| * We don't have to delete the VEBs or VSIs from the hw switch |
| * because the reset will make them disappear. |
| */ |
| ret = i40e_pf_reset(hw); |
| if (ret) |
| dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret); |
| pf->pfr_count++; |
| |
| if (test_bit(__I40E_DOWN, &pf->state)) |
| goto end_core_reset; |
| dev_info(&pf->pdev->dev, "Rebuilding internal switch\n"); |
| |
| /* rebuild the basics for the AdminQ, HMC, and initial HW switch */ |
| ret = i40e_init_adminq(&pf->hw); |
| if (ret) { |
| dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret); |
| goto end_core_reset; |
| } |
| |
| ret = i40e_get_capabilities(pf); |
| if (ret) { |
| dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n", |
| ret); |
| goto end_core_reset; |
| } |
| |
| /* call shutdown HMC */ |
| ret = i40e_shutdown_lan_hmc(hw); |
| if (ret) { |
| dev_info(&pf->pdev->dev, "shutdown_lan_hmc failed: %d\n", ret); |
| goto end_core_reset; |
| } |
| |
| ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp, |
| hw->func_caps.num_rx_qp, |
| pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num); |
| if (ret) { |
| dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret); |
| goto end_core_reset; |
| } |
| ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY); |
| if (ret) { |
| dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret); |
| goto end_core_reset; |
| } |
| |
| /* do basic switch setup */ |
| ret = i40e_setup_pf_switch(pf); |
| if (ret) |
| goto end_core_reset; |
| |
| /* Rebuild the VSIs and VEBs that existed before reset. |
| * They are still in our local switch element arrays, so only |
| * need to rebuild the switch model in the HW. |
| * |
| * If there were VEBs but the reconstitution failed, we'll try |
| * try to recover minimal use by getting the basic PF VSI working. |
| */ |
| if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) { |
| dev_info(&pf->pdev->dev, "attempting to rebuild switch\n"); |
| /* find the one VEB connected to the MAC, and find orphans */ |
| for (v = 0; v < I40E_MAX_VEB; v++) { |
| if (!pf->veb[v]) |
| continue; |
| |
| if (pf->veb[v]->uplink_seid == pf->mac_seid || |
| pf->veb[v]->uplink_seid == 0) { |
| ret = i40e_reconstitute_veb(pf->veb[v]); |
| |
| if (!ret) |
| continue; |
| |
| /* If Main VEB failed, we're in deep doodoo, |
| * so give up rebuilding the switch and set up |
| * for minimal rebuild of PF VSI. |
| * If orphan failed, we'll report the error |
| * but try to keep going. |
| */ |
| if (pf->veb[v]->uplink_seid == pf->mac_seid) { |
| dev_info(&pf->pdev->dev, |
| "rebuild of switch failed: %d, will try to set up simple PF connection\n", |
| ret); |
| pf->vsi[pf->lan_vsi]->uplink_seid |
| = pf->mac_seid; |
| break; |
| } else if (pf->veb[v]->uplink_seid == 0) { |
| dev_info(&pf->pdev->dev, |
| "rebuild of orphan VEB failed: %d\n", |
| ret); |
| } |
| } |
| } |
| } |
| |
| if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) { |
| dev_info(&pf->pdev->dev, "attempting to rebuild PF VSI\n"); |
| /* no VEB, so rebuild only the Main VSI */ |
| ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "rebuild of Main VSI failed: %d\n", ret); |
| goto end_core_reset; |
| } |
| } |
| |
| /* reinit the misc interrupt */ |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) |
| ret = i40e_setup_misc_vector(pf); |
| |
| /* restart the VSIs that were rebuilt and running before the reset */ |
| i40e_pf_unquiesce_all_vsi(pf); |
| |
| /* tell the firmware that we're starting */ |
| dv.major_version = DRV_VERSION_MAJOR; |
| dv.minor_version = DRV_VERSION_MINOR; |
| dv.build_version = DRV_VERSION_BUILD; |
| dv.subbuild_version = 0; |
| i40e_aq_send_driver_version(&pf->hw, &dv, NULL); |
| |
| dev_info(&pf->pdev->dev, "PF reset done\n"); |
| |
| end_core_reset: |
| clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state); |
| } |
| |
| /** |
| * i40e_handle_mdd_event |
| * @pf: pointer to the pf structure |
| * |
| * Called from the MDD irq handler to identify possibly malicious vfs |
| **/ |
| static void i40e_handle_mdd_event(struct i40e_pf *pf) |
| { |
| struct i40e_hw *hw = &pf->hw; |
| bool mdd_detected = false; |
| struct i40e_vf *vf; |
| u32 reg; |
| int i; |
| |
| if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)) |
| return; |
| |
| /* find what triggered the MDD event */ |
| reg = rd32(hw, I40E_GL_MDET_TX); |
| if (reg & I40E_GL_MDET_TX_VALID_MASK) { |
| u8 func = (reg & I40E_GL_MDET_TX_FUNCTION_MASK) |
| >> I40E_GL_MDET_TX_FUNCTION_SHIFT; |
| u8 event = (reg & I40E_GL_MDET_TX_EVENT_SHIFT) |
| >> I40E_GL_MDET_TX_EVENT_SHIFT; |
| u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK) |
| >> I40E_GL_MDET_TX_QUEUE_SHIFT; |
| dev_info(&pf->pdev->dev, |
| "Malicious Driver Detection TX event 0x%02x on q %d of function 0x%02x\n", |
| event, queue, func); |
| wr32(hw, I40E_GL_MDET_TX, 0xffffffff); |
| mdd_detected = true; |
| } |
| reg = rd32(hw, I40E_GL_MDET_RX); |
| if (reg & I40E_GL_MDET_RX_VALID_MASK) { |
| u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) |
| >> I40E_GL_MDET_RX_FUNCTION_SHIFT; |
| u8 event = (reg & I40E_GL_MDET_RX_EVENT_SHIFT) |
| >> I40E_GL_MDET_RX_EVENT_SHIFT; |
| u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK) |
| >> I40E_GL_MDET_RX_QUEUE_SHIFT; |
| dev_info(&pf->pdev->dev, |
| "Malicious Driver Detection RX event 0x%02x on q %d of function 0x%02x\n", |
| event, queue, func); |
| wr32(hw, I40E_GL_MDET_RX, 0xffffffff); |
| mdd_detected = true; |
| } |
| |
| /* see if one of the VFs needs its hand slapped */ |
| for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) { |
| vf = &(pf->vf[i]); |
| reg = rd32(hw, I40E_VP_MDET_TX(i)); |
| if (reg & I40E_VP_MDET_TX_VALID_MASK) { |
| wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF); |
| vf->num_mdd_events++; |
| dev_info(&pf->pdev->dev, "MDD TX event on VF %d\n", i); |
| } |
| |
| reg = rd32(hw, I40E_VP_MDET_RX(i)); |
| if (reg & I40E_VP_MDET_RX_VALID_MASK) { |
| wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF); |
| vf->num_mdd_events++; |
| dev_info(&pf->pdev->dev, "MDD RX event on VF %d\n", i); |
| } |
| |
| if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) { |
| dev_info(&pf->pdev->dev, |
| "Too many MDD events on VF %d, disabled\n", i); |
| dev_info(&pf->pdev->dev, |
| "Use PF Control I/F to re-enable the VF\n"); |
| set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states); |
| } |
| } |
| |
| /* re-enable mdd interrupt cause */ |
| clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state); |
| reg = rd32(hw, I40E_PFINT_ICR0_ENA); |
| reg |= I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK; |
| wr32(hw, I40E_PFINT_ICR0_ENA, reg); |
| i40e_flush(hw); |
| } |
| |
| /** |
| * i40e_service_task - Run the driver's async subtasks |
| * @work: pointer to work_struct containing our data |
| **/ |
| static void i40e_service_task(struct work_struct *work) |
| { |
| struct i40e_pf *pf = container_of(work, |
| struct i40e_pf, |
| service_task); |
| unsigned long start_time = jiffies; |
| |
| i40e_reset_subtask(pf); |
| i40e_handle_mdd_event(pf); |
| i40e_vc_process_vflr_event(pf); |
| i40e_watchdog_subtask(pf); |
| i40e_fdir_reinit_subtask(pf); |
| i40e_check_hang_subtask(pf); |
| i40e_sync_filters_subtask(pf); |
| i40e_clean_adminq_subtask(pf); |
| |
| i40e_service_event_complete(pf); |
| |
| /* If the tasks have taken longer than one timer cycle or there |
| * is more work to be done, reschedule the service task now |
| * rather than wait for the timer to tick again. |
| */ |
| if (time_after(jiffies, (start_time + pf->service_timer_period)) || |
| test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state) || |
| test_bit(__I40E_MDD_EVENT_PENDING, &pf->state) || |
| test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state)) |
| i40e_service_event_schedule(pf); |
| } |
| |
| /** |
| * i40e_service_timer - timer callback |
| * @data: pointer to PF struct |
| **/ |
| static void i40e_service_timer(unsigned long data) |
| { |
| struct i40e_pf *pf = (struct i40e_pf *)data; |
| |
| mod_timer(&pf->service_timer, |
| round_jiffies(jiffies + pf->service_timer_period)); |
| i40e_service_event_schedule(pf); |
| } |
| |
| /** |
| * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI |
| * @vsi: the VSI being configured |
| **/ |
| static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| |
| switch (vsi->type) { |
| case I40E_VSI_MAIN: |
| vsi->alloc_queue_pairs = pf->num_lan_qps; |
| vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS, |
| I40E_REQ_DESCRIPTOR_MULTIPLE); |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) |
| vsi->num_q_vectors = pf->num_lan_msix; |
| else |
| vsi->num_q_vectors = 1; |
| |
| break; |
| |
| case I40E_VSI_FDIR: |
| vsi->alloc_queue_pairs = 1; |
| vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT, |
| I40E_REQ_DESCRIPTOR_MULTIPLE); |
| vsi->num_q_vectors = 1; |
| break; |
| |
| case I40E_VSI_VMDQ2: |
| vsi->alloc_queue_pairs = pf->num_vmdq_qps; |
| vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS, |
| I40E_REQ_DESCRIPTOR_MULTIPLE); |
| vsi->num_q_vectors = pf->num_vmdq_msix; |
| break; |
| |
| case I40E_VSI_SRIOV: |
| vsi->alloc_queue_pairs = pf->num_vf_qps; |
| vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS, |
| I40E_REQ_DESCRIPTOR_MULTIPLE); |
| break; |
| |
| default: |
| WARN_ON(1); |
| return -ENODATA; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF |
| * @pf: board private structure |
| * @type: type of VSI |
| * |
| * On error: returns error code (negative) |
| * On success: returns vsi index in PF (positive) |
| **/ |
| static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type) |
| { |
| int ret = -ENODEV; |
| struct i40e_vsi *vsi; |
| int sz_vectors; |
| int sz_rings; |
| int vsi_idx; |
| int i; |
| |
| /* Need to protect the allocation of the VSIs at the PF level */ |
| mutex_lock(&pf->switch_mutex); |
| |
| /* VSI list may be fragmented if VSI creation/destruction has |
| * been happening. We can afford to do a quick scan to look |
| * for any free VSIs in the list. |
| * |
| * find next empty vsi slot, looping back around if necessary |
| */ |
| i = pf->next_vsi; |
| while (i < pf->hw.func_caps.num_vsis && pf->vsi[i]) |
| i++; |
| if (i >= pf->hw.func_caps.num_vsis) { |
| i = 0; |
| while (i < pf->next_vsi && pf->vsi[i]) |
| i++; |
| } |
| |
| if (i < pf->hw.func_caps.num_vsis && !pf->vsi[i]) { |
| vsi_idx = i; /* Found one! */ |
| } else { |
| ret = -ENODEV; |
| goto unlock_pf; /* out of VSI slots! */ |
| } |
| pf->next_vsi = ++i; |
| |
| vsi = kzalloc(sizeof(*vsi), GFP_KERNEL); |
| if (!vsi) { |
| ret = -ENOMEM; |
| goto unlock_pf; |
| } |
| vsi->type = type; |
| vsi->back = pf; |
| set_bit(__I40E_DOWN, &vsi->state); |
| vsi->flags = 0; |
| vsi->idx = vsi_idx; |
| vsi->rx_itr_setting = pf->rx_itr_default; |
| vsi->tx_itr_setting = pf->tx_itr_default; |
| vsi->netdev_registered = false; |
| vsi->work_limit = I40E_DEFAULT_IRQ_WORK; |
| INIT_LIST_HEAD(&vsi->mac_filter_list); |
| |
| ret = i40e_set_num_rings_in_vsi(vsi); |
| if (ret) |
| goto err_rings; |
| |
| /* allocate memory for ring pointers */ |
| sz_rings = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2; |
| vsi->tx_rings = kzalloc(sz_rings, GFP_KERNEL); |
| if (!vsi->tx_rings) { |
| ret = -ENOMEM; |
| goto err_rings; |
| } |
| vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs]; |
| |
| /* allocate memory for q_vector pointers */ |
| sz_vectors = sizeof(struct i40e_q_vectors *) * vsi->num_q_vectors; |
| vsi->q_vectors = kzalloc(sz_vectors, GFP_KERNEL); |
| if (!vsi->q_vectors) { |
| ret = -ENOMEM; |
| goto err_vectors; |
| } |
| |
| /* Setup default MSIX irq handler for VSI */ |
| i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings); |
| |
| pf->vsi[vsi_idx] = vsi; |
| ret = vsi_idx; |
| goto unlock_pf; |
| |
| err_vectors: |
| kfree(vsi->tx_rings); |
| err_rings: |
| pf->next_vsi = i - 1; |
| kfree(vsi); |
| unlock_pf: |
| mutex_unlock(&pf->switch_mutex); |
| return ret; |
| } |
| |
| /** |
| * i40e_vsi_clear - Deallocate the VSI provided |
| * @vsi: the VSI being un-configured |
| **/ |
| static int i40e_vsi_clear(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf; |
| |
| if (!vsi) |
| return 0; |
| |
| if (!vsi->back) |
| goto free_vsi; |
| pf = vsi->back; |
| |
| mutex_lock(&pf->switch_mutex); |
| if (!pf->vsi[vsi->idx]) { |
| dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n", |
| vsi->idx, vsi->idx, vsi, vsi->type); |
| goto unlock_vsi; |
| } |
| |
| if (pf->vsi[vsi->idx] != vsi) { |
| dev_err(&pf->pdev->dev, |
| "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n", |
| pf->vsi[vsi->idx]->idx, |
| pf->vsi[vsi->idx], |
| pf->vsi[vsi->idx]->type, |
| vsi->idx, vsi, vsi->type); |
| goto unlock_vsi; |
| } |
| |
| /* updates the pf for this cleared vsi */ |
| i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx); |
| i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx); |
| |
| /* free the ring and vector containers */ |
| kfree(vsi->q_vectors); |
| kfree(vsi->tx_rings); |
| |
| pf->vsi[vsi->idx] = NULL; |
| if (vsi->idx < pf->next_vsi) |
| pf->next_vsi = vsi->idx; |
| |
| unlock_vsi: |
| mutex_unlock(&pf->switch_mutex); |
| free_vsi: |
| kfree(vsi); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI |
| * @vsi: the VSI being cleaned |
| **/ |
| static s32 i40e_vsi_clear_rings(struct i40e_vsi *vsi) |
| { |
| int i; |
| |
| if (vsi->tx_rings[0]) |
| for (i = 0; i < vsi->alloc_queue_pairs; i++) { |
| kfree_rcu(vsi->tx_rings[i], rcu); |
| vsi->tx_rings[i] = NULL; |
| vsi->rx_rings[i] = NULL; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI |
| * @vsi: the VSI being configured |
| **/ |
| static int i40e_alloc_rings(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| int i; |
| |
| /* Set basic values in the rings to be used later during open() */ |
| for (i = 0; i < vsi->alloc_queue_pairs; i++) { |
| struct i40e_ring *tx_ring; |
| struct i40e_ring *rx_ring; |
| |
| tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL); |
| if (!tx_ring) |
| goto err_out; |
| |
| tx_ring->queue_index = i; |
| tx_ring->reg_idx = vsi->base_queue + i; |
| tx_ring->ring_active = false; |
| tx_ring->vsi = vsi; |
| tx_ring->netdev = vsi->netdev; |
| tx_ring->dev = &pf->pdev->dev; |
| tx_ring->count = vsi->num_desc; |
| tx_ring->size = 0; |
| tx_ring->dcb_tc = 0; |
| vsi->tx_rings[i] = tx_ring; |
| |
| rx_ring = &tx_ring[1]; |
| rx_ring->queue_index = i; |
| rx_ring->reg_idx = vsi->base_queue + i; |
| rx_ring->ring_active = false; |
| rx_ring->vsi = vsi; |
| rx_ring->netdev = vsi->netdev; |
| rx_ring->dev = &pf->pdev->dev; |
| rx_ring->count = vsi->num_desc; |
| rx_ring->size = 0; |
| rx_ring->dcb_tc = 0; |
| if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) |
| set_ring_16byte_desc_enabled(rx_ring); |
| else |
| clear_ring_16byte_desc_enabled(rx_ring); |
| vsi->rx_rings[i] = rx_ring; |
| } |
| |
| return 0; |
| |
| err_out: |
| i40e_vsi_clear_rings(vsi); |
| return -ENOMEM; |
| } |
| |
| /** |
| * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel |
| * @pf: board private structure |
| * @vectors: the number of MSI-X vectors to request |
| * |
| * Returns the number of vectors reserved, or error |
| **/ |
| static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors) |
| { |
| int err = 0; |
| |
| pf->num_msix_entries = 0; |
| while (vectors >= I40E_MIN_MSIX) { |
| err = pci_enable_msix(pf->pdev, pf->msix_entries, vectors); |
| if (err == 0) { |
| /* good to go */ |
| pf->num_msix_entries = vectors; |
| break; |
| } else if (err < 0) { |
| /* total failure */ |
| dev_info(&pf->pdev->dev, |
| "MSI-X vector reservation failed: %d\n", err); |
| vectors = 0; |
| break; |
| } else { |
| /* err > 0 is the hint for retry */ |
| dev_info(&pf->pdev->dev, |
| "MSI-X vectors wanted %d, retrying with %d\n", |
| vectors, err); |
| vectors = err; |
| } |
| } |
| |
| if (vectors > 0 && vectors < I40E_MIN_MSIX) { |
| dev_info(&pf->pdev->dev, |
| "Couldn't get enough vectors, only %d available\n", |
| vectors); |
| vectors = 0; |
| } |
| |
| return vectors; |
| } |
| |
| /** |
| * i40e_init_msix - Setup the MSIX capability |
| * @pf: board private structure |
| * |
| * Work with the OS to set up the MSIX vectors needed. |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int i40e_init_msix(struct i40e_pf *pf) |
| { |
| i40e_status err = 0; |
| struct i40e_hw *hw = &pf->hw; |
| int v_budget, i; |
| int vec; |
| |
| if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) |
| return -ENODEV; |
| |
| /* The number of vectors we'll request will be comprised of: |
| * - Add 1 for "other" cause for Admin Queue events, etc. |
| * - The number of LAN queue pairs |
| * already adjusted for the NUMA node |
| * assumes symmetric Tx/Rx pairing |
| * - The number of VMDq pairs |
| * Once we count this up, try the request. |
| * |
| * If we can't get what we want, we'll simplify to nearly nothing |
| * and try again. If that still fails, we punt. |
| */ |
| pf->num_lan_msix = pf->num_lan_qps; |
| pf->num_vmdq_msix = pf->num_vmdq_qps; |
| v_budget = 1 + pf->num_lan_msix; |
| v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix); |
| if (pf->flags & I40E_FLAG_FDIR_ENABLED) |
| v_budget++; |
| |
| /* Scale down if necessary, and the rings will share vectors */ |
| v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors); |
| |
| pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry), |
| GFP_KERNEL); |
| if (!pf->msix_entries) |
| return -ENOMEM; |
| |
| for (i = 0; i < v_budget; i++) |
| pf->msix_entries[i].entry = i; |
| vec = i40e_reserve_msix_vectors(pf, v_budget); |
| if (vec < I40E_MIN_MSIX) { |
| pf->flags &= ~I40E_FLAG_MSIX_ENABLED; |
| kfree(pf->msix_entries); |
| pf->msix_entries = NULL; |
| return -ENODEV; |
| |
| } else if (vec == I40E_MIN_MSIX) { |
| /* Adjust for minimal MSIX use */ |
| dev_info(&pf->pdev->dev, "Features disabled, not enough MSIX vectors\n"); |
| pf->flags &= ~I40E_FLAG_VMDQ_ENABLED; |
| pf->num_vmdq_vsis = 0; |
| pf->num_vmdq_qps = 0; |
| pf->num_vmdq_msix = 0; |
| pf->num_lan_qps = 1; |
| pf->num_lan_msix = 1; |
| |
| } else if (vec != v_budget) { |
| /* Scale vector usage down */ |
| pf->num_vmdq_msix = 1; /* force VMDqs to only one vector */ |
| vec--; /* reserve the misc vector */ |
| |
| /* partition out the remaining vectors */ |
| switch (vec) { |
| case 2: |
| pf->num_vmdq_vsis = 1; |
| pf->num_lan_msix = 1; |
| break; |
| case 3: |
| pf->num_vmdq_vsis = 1; |
| pf->num_lan_msix = 2; |
| break; |
| default: |
| pf->num_lan_msix = min_t(int, (vec / 2), |
| pf->num_lan_qps); |
| pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix), |
| I40E_DEFAULT_NUM_VMDQ_VSI); |
| break; |
| } |
| } |
| |
| return err; |
| } |
| |
| /** |
| * i40e_alloc_q_vector - Allocate memory for a single interrupt vector |
| * @vsi: the VSI being configured |
| * @v_idx: index of the vector in the vsi struct |
| * |
| * We allocate one q_vector. If allocation fails we return -ENOMEM. |
| **/ |
| static int i40e_alloc_q_vector(struct i40e_vsi *vsi, int v_idx) |
| { |
| struct i40e_q_vector *q_vector; |
| |
| /* allocate q_vector */ |
| q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL); |
| if (!q_vector) |
| return -ENOMEM; |
| |
| q_vector->vsi = vsi; |
| q_vector->v_idx = v_idx; |
| cpumask_set_cpu(v_idx, &q_vector->affinity_mask); |
| if (vsi->netdev) |
| netif_napi_add(vsi->netdev, &q_vector->napi, |
| i40e_napi_poll, vsi->work_limit); |
| |
| q_vector->rx.latency_range = I40E_LOW_LATENCY; |
| q_vector->tx.latency_range = I40E_LOW_LATENCY; |
| |
| /* tie q_vector and vsi together */ |
| vsi->q_vectors[v_idx] = q_vector; |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_alloc_q_vectors - Allocate memory for interrupt vectors |
| * @vsi: the VSI being configured |
| * |
| * We allocate one q_vector per queue interrupt. If allocation fails we |
| * return -ENOMEM. |
| **/ |
| static int i40e_alloc_q_vectors(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| int v_idx, num_q_vectors; |
| int err; |
| |
| /* if not MSIX, give the one vector only to the LAN VSI */ |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) |
| num_q_vectors = vsi->num_q_vectors; |
| else if (vsi == pf->vsi[pf->lan_vsi]) |
| num_q_vectors = 1; |
| else |
| return -EINVAL; |
| |
| for (v_idx = 0; v_idx < num_q_vectors; v_idx++) { |
| err = i40e_alloc_q_vector(vsi, v_idx); |
| if (err) |
| goto err_out; |
| } |
| |
| return 0; |
| |
| err_out: |
| while (v_idx--) |
| i40e_free_q_vector(vsi, v_idx); |
| |
| return err; |
| } |
| |
| /** |
| * i40e_init_interrupt_scheme - Determine proper interrupt scheme |
| * @pf: board private structure to initialize |
| **/ |
| static void i40e_init_interrupt_scheme(struct i40e_pf *pf) |
| { |
| int err = 0; |
| |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) { |
| err = i40e_init_msix(pf); |
| if (err) { |
| pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | |
| I40E_FLAG_RSS_ENABLED | |
| I40E_FLAG_MQ_ENABLED | |
| I40E_FLAG_DCB_ENABLED | |
| I40E_FLAG_SRIOV_ENABLED | |
| I40E_FLAG_FDIR_ENABLED | |
| I40E_FLAG_FDIR_ATR_ENABLED | |
| I40E_FLAG_VMDQ_ENABLED); |
| |
| /* rework the queue expectations without MSIX */ |
| i40e_determine_queue_usage(pf); |
| } |
| } |
| |
| if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) && |
| (pf->flags & I40E_FLAG_MSI_ENABLED)) { |
| dev_info(&pf->pdev->dev, "MSIX not available, trying MSI\n"); |
| err = pci_enable_msi(pf->pdev); |
| if (err) { |
| dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err); |
| pf->flags &= ~I40E_FLAG_MSI_ENABLED; |
| } |
| } |
| |
| if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED))) |
| dev_info(&pf->pdev->dev, "MSIX and MSI not available, falling back to Legacy IRQ\n"); |
| |
| /* track first vector for misc interrupts */ |
| err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1); |
| } |
| |
| /** |
| * i40e_setup_misc_vector - Setup the misc vector to handle non queue events |
| * @pf: board private structure |
| * |
| * This sets up the handler for MSIX 0, which is used to manage the |
| * non-queue interrupts, e.g. AdminQ and errors. This is not used |
| * when in MSI or Legacy interrupt mode. |
| **/ |
| static int i40e_setup_misc_vector(struct i40e_pf *pf) |
| { |
| struct i40e_hw *hw = &pf->hw; |
| int err = 0; |
| |
| /* Only request the irq if this is the first time through, and |
| * not when we're rebuilding after a Reset |
| */ |
| if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) { |
| err = request_irq(pf->msix_entries[0].vector, |
| i40e_intr, 0, pf->misc_int_name, pf); |
| if (err) { |
| dev_info(&pf->pdev->dev, |
| "request_irq for msix_misc failed: %d\n", err); |
| return -EFAULT; |
| } |
| } |
| |
| i40e_enable_misc_int_causes(hw); |
| |
| /* associate no queues to the misc vector */ |
| wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST); |
| wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K); |
| |
| i40e_flush(hw); |
| |
| i40e_irq_dynamic_enable_icr0(pf); |
| |
| return err; |
| } |
| |
| /** |
| * i40e_config_rss - Prepare for RSS if used |
| * @pf: board private structure |
| **/ |
| static int i40e_config_rss(struct i40e_pf *pf) |
| { |
| struct i40e_hw *hw = &pf->hw; |
| u32 lut = 0; |
| int i, j; |
| u64 hena; |
| /* Set of random keys generated using kernel random number generator */ |
| static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687, |
| 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377, |
| 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d, |
| 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be}; |
| |
| /* Fill out hash function seed */ |
| for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++) |
| wr32(hw, I40E_PFQF_HKEY(i), seed[i]); |
| |
| /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */ |
| hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) | |
| ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32); |
| hena |= ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_UDP) | |
| ((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) | |
| ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) | |
| ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV4_TCP) | |
| ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_TCP) | |
| ((u64)1 << I40E_FILTER_PCTYPE_NONF_IPV6_UDP) | |
| ((u64)1 << I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) | |
| ((u64)1 << I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP) | |
| ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV4)| |
| ((u64)1 << I40E_FILTER_PCTYPE_FRAG_IPV6); |
| wr32(hw, I40E_PFQF_HENA(0), (u32)hena); |
| wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32)); |
| |
| /* Populate the LUT with max no. of queues in round robin fashion */ |
| for (i = 0, j = 0; i < pf->hw.func_caps.rss_table_size; i++, j++) { |
| |
| /* The assumption is that lan qp count will be the highest |
| * qp count for any PF VSI that needs RSS. |
| * If multiple VSIs need RSS support, all the qp counts |
| * for those VSIs should be a power of 2 for RSS to work. |
| * If LAN VSI is the only consumer for RSS then this requirement |
| * is not necessary. |
| */ |
| if (j == pf->rss_size) |
| j = 0; |
| /* lut = 4-byte sliding window of 4 lut entries */ |
| lut = (lut << 8) | (j & |
| ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1)); |
| /* On i = 3, we have 4 entries in lut; write to the register */ |
| if ((i & 3) == 3) |
| wr32(hw, I40E_PFQF_HLUT(i >> 2), lut); |
| } |
| i40e_flush(hw); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_sw_init - Initialize general software structures (struct i40e_pf) |
| * @pf: board private structure to initialize |
| * |
| * i40e_sw_init initializes the Adapter private data structure. |
| * Fields are initialized based on PCI device information and |
| * OS network device settings (MTU size). |
| **/ |
| static int i40e_sw_init(struct i40e_pf *pf) |
| { |
| int err = 0; |
| int size; |
| |
| pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE, |
| (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)); |
| if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) { |
| if (I40E_DEBUG_USER & debug) |
| pf->hw.debug_mask = debug; |
| pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER), |
| I40E_DEFAULT_MSG_ENABLE); |
| } |
| |
| /* Set default capability flags */ |
| pf->flags = I40E_FLAG_RX_CSUM_ENABLED | |
| I40E_FLAG_MSI_ENABLED | |
| I40E_FLAG_MSIX_ENABLED | |
| I40E_FLAG_RX_PS_ENABLED | |
| I40E_FLAG_MQ_ENABLED | |
| I40E_FLAG_RX_1BUF_ENABLED; |
| |
| pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width; |
| if (pf->hw.func_caps.rss) { |
| pf->flags |= I40E_FLAG_RSS_ENABLED; |
| pf->rss_size = min_t(int, pf->rss_size_max, |
| nr_cpus_node(numa_node_id())); |
| } else { |
| pf->rss_size = 1; |
| } |
| |
| if (pf->hw.func_caps.dcb) |
| pf->num_tc_qps = I40E_DEFAULT_QUEUES_PER_TC; |
| else |
| pf->num_tc_qps = 0; |
| |
| if (pf->hw.func_caps.fd) { |
| /* FW/NVM is not yet fixed in this regard */ |
| if ((pf->hw.func_caps.fd_filters_guaranteed > 0) || |
| (pf->hw.func_caps.fd_filters_best_effort > 0)) { |
| pf->flags |= I40E_FLAG_FDIR_ATR_ENABLED; |
| dev_info(&pf->pdev->dev, |
| "Flow Director ATR mode Enabled\n"); |
| pf->flags |= I40E_FLAG_FDIR_ENABLED; |
| dev_info(&pf->pdev->dev, |
| "Flow Director Side Band mode Enabled\n"); |
| pf->fdir_pf_filter_count = |
| pf->hw.func_caps.fd_filters_guaranteed; |
| } |
| } else { |
| pf->fdir_pf_filter_count = 0; |
| } |
| |
| if (pf->hw.func_caps.vmdq) { |
| pf->flags |= I40E_FLAG_VMDQ_ENABLED; |
| pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI; |
| pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ; |
| } |
| |
| /* MFP mode enabled */ |
| if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) { |
| pf->flags |= I40E_FLAG_MFP_ENABLED; |
| dev_info(&pf->pdev->dev, "MFP mode Enabled\n"); |
| } |
| |
| #ifdef CONFIG_PCI_IOV |
| if (pf->hw.func_caps.num_vfs) { |
| pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF; |
| pf->flags |= I40E_FLAG_SRIOV_ENABLED; |
| pf->num_req_vfs = min_t(int, |
| pf->hw.func_caps.num_vfs, |
| I40E_MAX_VF_COUNT); |
| } |
| #endif /* CONFIG_PCI_IOV */ |
| pf->eeprom_version = 0xDEAD; |
| pf->lan_veb = I40E_NO_VEB; |
| pf->lan_vsi = I40E_NO_VSI; |
| |
| /* set up queue assignment tracking */ |
| size = sizeof(struct i40e_lump_tracking) |
| + (sizeof(u16) * pf->hw.func_caps.num_tx_qp); |
| pf->qp_pile = kzalloc(size, GFP_KERNEL); |
| if (!pf->qp_pile) { |
| err = -ENOMEM; |
| goto sw_init_done; |
| } |
| pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp; |
| pf->qp_pile->search_hint = 0; |
| |
| /* set up vector assignment tracking */ |
| size = sizeof(struct i40e_lump_tracking) |
| + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors); |
| pf->irq_pile = kzalloc(size, GFP_KERNEL); |
| if (!pf->irq_pile) { |
| kfree(pf->qp_pile); |
| err = -ENOMEM; |
| goto sw_init_done; |
| } |
| pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors; |
| pf->irq_pile->search_hint = 0; |
| |
| mutex_init(&pf->switch_mutex); |
| |
| sw_init_done: |
| return err; |
| } |
| |
| /** |
| * i40e_set_features - set the netdev feature flags |
| * @netdev: ptr to the netdev being adjusted |
| * @features: the feature set that the stack is suggesting |
| **/ |
| static int i40e_set_features(struct net_device *netdev, |
| netdev_features_t features) |
| { |
| struct i40e_netdev_priv *np = netdev_priv(netdev); |
| struct i40e_vsi *vsi = np->vsi; |
| |
| if (features & NETIF_F_HW_VLAN_CTAG_RX) |
| i40e_vlan_stripping_enable(vsi); |
| else |
| i40e_vlan_stripping_disable(vsi); |
| |
| return 0; |
| } |
| |
| static const struct net_device_ops i40e_netdev_ops = { |
| .ndo_open = i40e_open, |
| .ndo_stop = i40e_close, |
| .ndo_start_xmit = i40e_lan_xmit_frame, |
| .ndo_get_stats64 = i40e_get_netdev_stats_struct, |
| .ndo_set_rx_mode = i40e_set_rx_mode, |
| .ndo_validate_addr = eth_validate_addr, |
| .ndo_set_mac_address = i40e_set_mac, |
| .ndo_change_mtu = i40e_change_mtu, |
| .ndo_tx_timeout = i40e_tx_timeout, |
| .ndo_vlan_rx_add_vid = i40e_vlan_rx_add_vid, |
| .ndo_vlan_rx_kill_vid = i40e_vlan_rx_kill_vid, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = i40e_netpoll, |
| #endif |
| .ndo_setup_tc = i40e_setup_tc, |
| .ndo_set_features = i40e_set_features, |
| .ndo_set_vf_mac = i40e_ndo_set_vf_mac, |
| .ndo_set_vf_vlan = i40e_ndo_set_vf_port_vlan, |
| .ndo_set_vf_tx_rate = i40e_ndo_set_vf_bw, |
| .ndo_get_vf_config = i40e_ndo_get_vf_config, |
| }; |
| |
| /** |
| * i40e_config_netdev - Setup the netdev flags |
| * @vsi: the VSI being configured |
| * |
| * Returns 0 on success, negative value on failure |
| **/ |
| static int i40e_config_netdev(struct i40e_vsi *vsi) |
| { |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| struct i40e_netdev_priv *np; |
| struct net_device *netdev; |
| u8 mac_addr[ETH_ALEN]; |
| int etherdev_size; |
| |
| etherdev_size = sizeof(struct i40e_netdev_priv); |
| netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs); |
| if (!netdev) |
| return -ENOMEM; |
| |
| vsi->netdev = netdev; |
| np = netdev_priv(netdev); |
| np->vsi = vsi; |
| |
| netdev->hw_enc_features = NETIF_F_IP_CSUM | |
| NETIF_F_GSO_UDP_TUNNEL | |
| NETIF_F_TSO | |
| NETIF_F_SG; |
| |
| netdev->features = NETIF_F_SG | |
| NETIF_F_IP_CSUM | |
| NETIF_F_SCTP_CSUM | |
| NETIF_F_HIGHDMA | |
| NETIF_F_GSO_UDP_TUNNEL | |
| NETIF_F_HW_VLAN_CTAG_TX | |
| NETIF_F_HW_VLAN_CTAG_RX | |
| NETIF_F_HW_VLAN_CTAG_FILTER | |
| NETIF_F_IPV6_CSUM | |
| NETIF_F_TSO | |
| NETIF_F_TSO6 | |
| NETIF_F_RXCSUM | |
| NETIF_F_RXHASH | |
| 0; |
| |
| /* copy netdev features into list of user selectable features */ |
| netdev->hw_features |= netdev->features; |
| |
| if (vsi->type == I40E_VSI_MAIN) { |
| SET_NETDEV_DEV(netdev, &pf->pdev->dev); |
| memcpy(mac_addr, hw->mac.perm_addr, ETH_ALEN); |
| } else { |
| /* relate the VSI_VMDQ name to the VSI_MAIN name */ |
| snprintf(netdev->name, IFNAMSIZ, "%sv%%d", |
| pf->vsi[pf->lan_vsi]->netdev->name); |
| random_ether_addr(mac_addr); |
| i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false); |
| } |
| |
| memcpy(netdev->dev_addr, mac_addr, ETH_ALEN); |
| memcpy(netdev->perm_addr, mac_addr, ETH_ALEN); |
| /* vlan gets same features (except vlan offload) |
| * after any tweaks for specific VSI types |
| */ |
| netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX | |
| NETIF_F_HW_VLAN_CTAG_RX | |
| NETIF_F_HW_VLAN_CTAG_FILTER); |
| netdev->priv_flags |= IFF_UNICAST_FLT; |
| netdev->priv_flags |= IFF_SUPP_NOFCS; |
| /* Setup netdev TC information */ |
| i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc); |
| |
| netdev->netdev_ops = &i40e_netdev_ops; |
| netdev->watchdog_timeo = 5 * HZ; |
| i40e_set_ethtool_ops(netdev); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_delete - Delete a VSI from the switch |
| * @vsi: the VSI being removed |
| * |
| * Returns 0 on success, negative value on failure |
| **/ |
| static void i40e_vsi_delete(struct i40e_vsi *vsi) |
| { |
| /* remove default VSI is not allowed */ |
| if (vsi == vsi->back->vsi[vsi->back->lan_vsi]) |
| return; |
| |
| /* there is no HW VSI for FDIR */ |
| if (vsi->type == I40E_VSI_FDIR) |
| return; |
| |
| i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL); |
| return; |
| } |
| |
| /** |
| * i40e_add_vsi - Add a VSI to the switch |
| * @vsi: the VSI being configured |
| * |
| * This initializes a VSI context depending on the VSI type to be added and |
| * passes it down to the add_vsi aq command. |
| **/ |
| static int i40e_add_vsi(struct i40e_vsi *vsi) |
| { |
| int ret = -ENODEV; |
| struct i40e_mac_filter *f, *ftmp; |
| struct i40e_pf *pf = vsi->back; |
| struct i40e_hw *hw = &pf->hw; |
| struct i40e_vsi_context ctxt; |
| u8 enabled_tc = 0x1; /* TC0 enabled */ |
| int f_count = 0; |
| |
| memset(&ctxt, 0, sizeof(ctxt)); |
| switch (vsi->type) { |
| case I40E_VSI_MAIN: |
| /* The PF's main VSI is already setup as part of the |
| * device initialization, so we'll not bother with |
| * the add_vsi call, but we will retrieve the current |
| * VSI context. |
| */ |
| ctxt.seid = pf->main_vsi_seid; |
| ctxt.pf_num = pf->hw.pf_id; |
| ctxt.vf_num = 0; |
| ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL); |
| ctxt.flags = I40E_AQ_VSI_TYPE_PF; |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "couldn't get pf vsi config, err %d, aq_err %d\n", |
| ret, pf->hw.aq.asq_last_status); |
| return -ENOENT; |
| } |
| memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info)); |
| vsi->info.valid_sections = 0; |
| |
| vsi->seid = ctxt.seid; |
| vsi->id = ctxt.vsi_number; |
| |
| enabled_tc = i40e_pf_get_tc_map(pf); |
| |
| /* MFP mode setup queue map and update VSI */ |
| if (pf->flags & I40E_FLAG_MFP_ENABLED) { |
| memset(&ctxt, 0, sizeof(ctxt)); |
| ctxt.seid = pf->main_vsi_seid; |
| ctxt.pf_num = pf->hw.pf_id; |
| ctxt.vf_num = 0; |
| i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false); |
| ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "update vsi failed, aq_err=%d\n", |
| pf->hw.aq.asq_last_status); |
| ret = -ENOENT; |
| goto err; |
| } |
| /* update the local VSI info queue map */ |
| i40e_vsi_update_queue_map(vsi, &ctxt); |
| vsi->info.valid_sections = 0; |
| } else { |
| /* Default/Main VSI is only enabled for TC0 |
| * reconfigure it to enable all TCs that are |
| * available on the port in SFP mode. |
| */ |
| ret = i40e_vsi_config_tc(vsi, enabled_tc); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n", |
| enabled_tc, ret, |
| pf->hw.aq.asq_last_status); |
| ret = -ENOENT; |
| } |
| } |
| break; |
| |
| case I40E_VSI_FDIR: |
| /* no queue mapping or actual HW VSI needed */ |
| vsi->info.valid_sections = 0; |
| vsi->seid = 0; |
| vsi->id = 0; |
| i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true); |
| return 0; |
| break; |
| |
| case I40E_VSI_VMDQ2: |
| ctxt.pf_num = hw->pf_id; |
| ctxt.vf_num = 0; |
| ctxt.uplink_seid = vsi->uplink_seid; |
| ctxt.connection_type = 0x1; /* regular data port */ |
| ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2; |
| |
| ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID); |
| |
| /* This VSI is connected to VEB so the switch_id |
| * should be set to zero by default. |
| */ |
| ctxt.info.switch_id = 0; |
| ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB); |
| ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB); |
| |
| /* Setup the VSI tx/rx queue map for TC0 only for now */ |
| i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true); |
| break; |
| |
| case I40E_VSI_SRIOV: |
| ctxt.pf_num = hw->pf_id; |
| ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id; |
| ctxt.uplink_seid = vsi->uplink_seid; |
| ctxt.connection_type = 0x1; /* regular data port */ |
| ctxt.flags = I40E_AQ_VSI_TYPE_VF; |
| |
| ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID); |
| |
| /* This VSI is connected to VEB so the switch_id |
| * should be set to zero by default. |
| */ |
| ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB); |
| |
| ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID); |
| ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL; |
| /* Setup the VSI tx/rx queue map for TC0 only for now */ |
| i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true); |
| break; |
| |
| default: |
| return -ENODEV; |
| } |
| |
| if (vsi->type != I40E_VSI_MAIN) { |
| ret = i40e_aq_add_vsi(hw, &ctxt, NULL); |
| if (ret) { |
| dev_info(&vsi->back->pdev->dev, |
| "add vsi failed, aq_err=%d\n", |
| vsi->back->hw.aq.asq_last_status); |
| ret = -ENOENT; |
| goto err; |
| } |
| memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info)); |
| vsi->info.valid_sections = 0; |
| vsi->seid = ctxt.seid; |
| vsi->id = ctxt.vsi_number; |
| } |
| |
| /* If macvlan filters already exist, force them to get loaded */ |
| list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) { |
| f->changed = true; |
| f_count++; |
| } |
| if (f_count) { |
| vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED; |
| pf->flags |= I40E_FLAG_FILTER_SYNC; |
| } |
| |
| /* Update VSI BW information */ |
| ret = i40e_vsi_get_bw_info(vsi); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "couldn't get vsi bw info, err %d, aq_err %d\n", |
| ret, pf->hw.aq.asq_last_status); |
| /* VSI is already added so not tearing that up */ |
| ret = 0; |
| } |
| |
| err: |
| return ret; |
| } |
| |
| /** |
| * i40e_vsi_release - Delete a VSI and free its resources |
| * @vsi: the VSI being removed |
| * |
| * Returns 0 on success or < 0 on error |
| **/ |
| int i40e_vsi_release(struct i40e_vsi *vsi) |
| { |
| struct i40e_mac_filter *f, *ftmp; |
| struct i40e_veb *veb = NULL; |
| struct i40e_pf *pf; |
| u16 uplink_seid; |
| int i, n; |
| |
| pf = vsi->back; |
| |
| /* release of a VEB-owner or last VSI is not allowed */ |
| if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) { |
| dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n", |
| vsi->seid, vsi->uplink_seid); |
| return -ENODEV; |
| } |
| if (vsi == pf->vsi[pf->lan_vsi] && |
| !test_bit(__I40E_DOWN, &pf->state)) { |
| dev_info(&pf->pdev->dev, "Can't remove PF VSI\n"); |
| return -ENODEV; |
| } |
| |
| uplink_seid = vsi->uplink_seid; |
| if (vsi->type != I40E_VSI_SRIOV) { |
| if (vsi->netdev_registered) { |
| vsi->netdev_registered = false; |
| if (vsi->netdev) { |
| /* results in a call to i40e_close() */ |
| unregister_netdev(vsi->netdev); |
| free_netdev(vsi->netdev); |
| vsi->netdev = NULL; |
| } |
| } else { |
| if (!test_and_set_bit(__I40E_DOWN, &vsi->state)) |
| i40e_down(vsi); |
| i40e_vsi_free_irq(vsi); |
| i40e_vsi_free_tx_resources(vsi); |
| i40e_vsi_free_rx_resources(vsi); |
| } |
| i40e_vsi_disable_irq(vsi); |
| } |
| |
| list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) |
| i40e_del_filter(vsi, f->macaddr, f->vlan, |
| f->is_vf, f->is_netdev); |
| i40e_sync_vsi_filters(vsi); |
| |
| i40e_vsi_delete(vsi); |
| i40e_vsi_free_q_vectors(vsi); |
| i40e_vsi_clear_rings(vsi); |
| i40e_vsi_clear(vsi); |
| |
| /* If this was the last thing on the VEB, except for the |
| * controlling VSI, remove the VEB, which puts the controlling |
| * VSI onto the next level down in the switch. |
| * |
| * Well, okay, there's one more exception here: don't remove |
| * the orphan VEBs yet. We'll wait for an explicit remove request |
| * from up the network stack. |
| */ |
| for (n = 0, i = 0; i < pf->hw.func_caps.num_vsis; i++) { |
| if (pf->vsi[i] && |
| pf->vsi[i]->uplink_seid == uplink_seid && |
| (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) { |
| n++; /* count the VSIs */ |
| } |
| } |
| for (i = 0; i < I40E_MAX_VEB; i++) { |
| if (!pf->veb[i]) |
| continue; |
| if (pf->veb[i]->uplink_seid == uplink_seid) |
| n++; /* count the VEBs */ |
| if (pf->veb[i]->seid == uplink_seid) |
| veb = pf->veb[i]; |
| } |
| if (n == 0 && veb && veb->uplink_seid != 0) |
| i40e_veb_release(veb); |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI |
| * @vsi: ptr to the VSI |
| * |
| * This should only be called after i40e_vsi_mem_alloc() which allocates the |
| * corresponding SW VSI structure and initializes num_queue_pairs for the |
| * newly allocated VSI. |
| * |
| * Returns 0 on success or negative on failure |
| **/ |
| static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi) |
| { |
| int ret = -ENOENT; |
| struct i40e_pf *pf = vsi->back; |
| |
| if (vsi->q_vectors[0]) { |
| dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n", |
| vsi->seid); |
| return -EEXIST; |
| } |
| |
| if (vsi->base_vector) { |
| dev_info(&pf->pdev->dev, |
| "VSI %d has non-zero base vector %d\n", |
| vsi->seid, vsi->base_vector); |
| return -EEXIST; |
| } |
| |
| ret = i40e_alloc_q_vectors(vsi); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "failed to allocate %d q_vector for VSI %d, ret=%d\n", |
| vsi->num_q_vectors, vsi->seid, ret); |
| vsi->num_q_vectors = 0; |
| goto vector_setup_out; |
| } |
| |
| if (vsi->num_q_vectors) |
| vsi->base_vector = i40e_get_lump(pf, pf->irq_pile, |
| vsi->num_q_vectors, vsi->idx); |
| if (vsi->base_vector < 0) { |
| dev_info(&pf->pdev->dev, |
| "failed to get q tracking for VSI %d, err=%d\n", |
| vsi->seid, vsi->base_vector); |
| i40e_vsi_free_q_vectors(vsi); |
| ret = -ENOENT; |
| goto vector_setup_out; |
| } |
| |
| vector_setup_out: |
| return ret; |
| } |
| |
| /** |
| * i40e_vsi_setup - Set up a VSI by a given type |
| * @pf: board private structure |
| * @type: VSI type |
| * @uplink_seid: the switch element to link to |
| * @param1: usage depends upon VSI type. For VF types, indicates VF id |
| * |
| * This allocates the sw VSI structure and its queue resources, then add a VSI |
| * to the identified VEB. |
| * |
| * Returns pointer to the successfully allocated and configure VSI sw struct on |
| * success, otherwise returns NULL on failure. |
| **/ |
| struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type, |
| u16 uplink_seid, u32 param1) |
| { |
| struct i40e_vsi *vsi = NULL; |
| struct i40e_veb *veb = NULL; |
| int ret, i; |
| int v_idx; |
| |
| /* The requested uplink_seid must be either |
| * - the PF's port seid |
| * no VEB is needed because this is the PF |
| * or this is a Flow Director special case VSI |
| * - seid of an existing VEB |
| * - seid of a VSI that owns an existing VEB |
| * - seid of a VSI that doesn't own a VEB |
| * a new VEB is created and the VSI becomes the owner |
| * - seid of the PF VSI, which is what creates the first VEB |
| * this is a special case of the previous |
| * |
| * Find which uplink_seid we were given and create a new VEB if needed |
| */ |
| for (i = 0; i < I40E_MAX_VEB; i++) { |
| if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) { |
| veb = pf->veb[i]; |
| break; |
| } |
| } |
| |
| if (!veb && uplink_seid != pf->mac_seid) { |
| |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) { |
| if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) { |
| vsi = pf->vsi[i]; |
| break; |
| } |
| } |
| if (!vsi) { |
| dev_info(&pf->pdev->dev, "no such uplink_seid %d\n", |
| uplink_seid); |
| return NULL; |
| } |
| |
| if (vsi->uplink_seid == pf->mac_seid) |
| veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid, |
| vsi->tc_config.enabled_tc); |
| else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) |
| veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid, |
| vsi->tc_config.enabled_tc); |
| |
| for (i = 0; i < I40E_MAX_VEB && !veb; i++) { |
| if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid) |
| veb = pf->veb[i]; |
| } |
| if (!veb) { |
| dev_info(&pf->pdev->dev, "couldn't add VEB\n"); |
| return NULL; |
| } |
| |
| vsi->flags |= I40E_VSI_FLAG_VEB_OWNER; |
| uplink_seid = veb->seid; |
| } |
| |
| /* get vsi sw struct */ |
| v_idx = i40e_vsi_mem_alloc(pf, type); |
| if (v_idx < 0) |
| goto err_alloc; |
| vsi = pf->vsi[v_idx]; |
| vsi->type = type; |
| vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB); |
| |
| if (type == I40E_VSI_MAIN) |
| pf->lan_vsi = v_idx; |
| else if (type == I40E_VSI_SRIOV) |
| vsi->vf_id = param1; |
| /* assign it some queues */ |
| ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx); |
| if (ret < 0) { |
| dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n", |
| vsi->seid, ret); |
| goto err_vsi; |
| } |
| vsi->base_queue = ret; |
| |
| /* get a VSI from the hardware */ |
| vsi->uplink_seid = uplink_seid; |
| ret = i40e_add_vsi(vsi); |
| if (ret) |
| goto err_vsi; |
| |
| switch (vsi->type) { |
| /* setup the netdev if needed */ |
| case I40E_VSI_MAIN: |
| case I40E_VSI_VMDQ2: |
| ret = i40e_config_netdev(vsi); |
| if (ret) |
| goto err_netdev; |
| ret = register_netdev(vsi->netdev); |
| if (ret) |
| goto err_netdev; |
| vsi->netdev_registered = true; |
| netif_carrier_off(vsi->netdev); |
| /* fall through */ |
| |
| case I40E_VSI_FDIR: |
| /* set up vectors and rings if needed */ |
| ret = i40e_vsi_setup_vectors(vsi); |
| if (ret) |
| goto err_msix; |
| |
| ret = i40e_alloc_rings(vsi); |
| if (ret) |
| goto err_rings; |
| |
| /* map all of the rings to the q_vectors */ |
| i40e_vsi_map_rings_to_vectors(vsi); |
| |
| i40e_vsi_reset_stats(vsi); |
| break; |
| |
| default: |
| /* no netdev or rings for the other VSI types */ |
| break; |
| } |
| |
| return vsi; |
| |
| err_rings: |
| i40e_vsi_free_q_vectors(vsi); |
| err_msix: |
| if (vsi->netdev_registered) { |
| vsi->netdev_registered = false; |
| unregister_netdev(vsi->netdev); |
| free_netdev(vsi->netdev); |
| vsi->netdev = NULL; |
| } |
| err_netdev: |
| i40e_aq_delete_element(&pf->hw, vsi->seid, NULL); |
| err_vsi: |
| i40e_vsi_clear(vsi); |
| err_alloc: |
| return NULL; |
| } |
| |
| /** |
| * i40e_veb_get_bw_info - Query VEB BW information |
| * @veb: the veb to query |
| * |
| * Query the Tx scheduler BW configuration data for given VEB |
| **/ |
| static int i40e_veb_get_bw_info(struct i40e_veb *veb) |
| { |
| struct i40e_aqc_query_switching_comp_ets_config_resp ets_data; |
| struct i40e_aqc_query_switching_comp_bw_config_resp bw_data; |
| struct i40e_pf *pf = veb->pf; |
| struct i40e_hw *hw = &pf->hw; |
| u32 tc_bw_max; |
| int ret = 0; |
| int i; |
| |
| ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid, |
| &bw_data, NULL); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "query veb bw config failed, aq_err=%d\n", |
| hw->aq.asq_last_status); |
| goto out; |
| } |
| |
| ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid, |
| &ets_data, NULL); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "query veb bw ets config failed, aq_err=%d\n", |
| hw->aq.asq_last_status); |
| goto out; |
| } |
| |
| veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit); |
| veb->bw_max_quanta = ets_data.tc_bw_max; |
| veb->is_abs_credits = bw_data.absolute_credits_enable; |
| tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) | |
| (le16_to_cpu(bw_data.tc_bw_max[1]) << 16); |
| for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) { |
| veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i]; |
| veb->bw_tc_limit_credits[i] = |
| le16_to_cpu(bw_data.tc_bw_limits[i]); |
| veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7); |
| } |
| |
| out: |
| return ret; |
| } |
| |
| /** |
| * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF |
| * @pf: board private structure |
| * |
| * On error: returns error code (negative) |
| * On success: returns vsi index in PF (positive) |
| **/ |
| static int i40e_veb_mem_alloc(struct i40e_pf *pf) |
| { |
| int ret = -ENOENT; |
| struct i40e_veb *veb; |
| int i; |
| |
| /* Need to protect the allocation of switch elements at the PF level */ |
| mutex_lock(&pf->switch_mutex); |
| |
| /* VEB list may be fragmented if VEB creation/destruction has |
| * been happening. We can afford to do a quick scan to look |
| * for any free slots in the list. |
| * |
| * find next empty veb slot, looping back around if necessary |
| */ |
| i = 0; |
| while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL)) |
| i++; |
| if (i >= I40E_MAX_VEB) { |
| ret = -ENOMEM; |
| goto err_alloc_veb; /* out of VEB slots! */ |
| } |
| |
| veb = kzalloc(sizeof(*veb), GFP_KERNEL); |
| if (!veb) { |
| ret = -ENOMEM; |
| goto err_alloc_veb; |
| } |
| veb->pf = pf; |
| veb->idx = i; |
| veb->enabled_tc = 1; |
| |
| pf->veb[i] = veb; |
| ret = i; |
| err_alloc_veb: |
| mutex_unlock(&pf->switch_mutex); |
| return ret; |
| } |
| |
| /** |
| * i40e_switch_branch_release - Delete a branch of the switch tree |
| * @branch: where to start deleting |
| * |
| * This uses recursion to find the tips of the branch to be |
| * removed, deleting until we get back to and can delete this VEB. |
| **/ |
| static void i40e_switch_branch_release(struct i40e_veb *branch) |
| { |
| struct i40e_pf *pf = branch->pf; |
| u16 branch_seid = branch->seid; |
| u16 veb_idx = branch->idx; |
| int i; |
| |
| /* release any VEBs on this VEB - RECURSION */ |
| for (i = 0; i < I40E_MAX_VEB; i++) { |
| if (!pf->veb[i]) |
| continue; |
| if (pf->veb[i]->uplink_seid == branch->seid) |
| i40e_switch_branch_release(pf->veb[i]); |
| } |
| |
| /* Release the VSIs on this VEB, but not the owner VSI. |
| * |
| * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing |
| * the VEB itself, so don't use (*branch) after this loop. |
| */ |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) { |
| if (!pf->vsi[i]) |
| continue; |
| if (pf->vsi[i]->uplink_seid == branch_seid && |
| (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) { |
| i40e_vsi_release(pf->vsi[i]); |
| } |
| } |
| |
| /* There's one corner case where the VEB might not have been |
| * removed, so double check it here and remove it if needed. |
| * This case happens if the veb was created from the debugfs |
| * commands and no VSIs were added to it. |
| */ |
| if (pf->veb[veb_idx]) |
| i40e_veb_release(pf->veb[veb_idx]); |
| } |
| |
| /** |
| * i40e_veb_clear - remove veb struct |
| * @veb: the veb to remove |
| **/ |
| static void i40e_veb_clear(struct i40e_veb *veb) |
| { |
| if (!veb) |
| return; |
| |
| if (veb->pf) { |
| struct i40e_pf *pf = veb->pf; |
| |
| mutex_lock(&pf->switch_mutex); |
| if (pf->veb[veb->idx] == veb) |
| pf->veb[veb->idx] = NULL; |
| mutex_unlock(&pf->switch_mutex); |
| } |
| |
| kfree(veb); |
| } |
| |
| /** |
| * i40e_veb_release - Delete a VEB and free its resources |
| * @veb: the VEB being removed |
| **/ |
| void i40e_veb_release(struct i40e_veb *veb) |
| { |
| struct i40e_vsi *vsi = NULL; |
| struct i40e_pf *pf; |
| int i, n = 0; |
| |
| pf = veb->pf; |
| |
| /* find the remaining VSI and check for extras */ |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) { |
| if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) { |
| n++; |
| vsi = pf->vsi[i]; |
| } |
| } |
| if (n != 1) { |
| dev_info(&pf->pdev->dev, |
| "can't remove VEB %d with %d VSIs left\n", |
| veb->seid, n); |
| return; |
| } |
| |
| /* move the remaining VSI to uplink veb */ |
| vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER; |
| if (veb->uplink_seid) { |
| vsi->uplink_seid = veb->uplink_seid; |
| if (veb->uplink_seid == pf->mac_seid) |
| vsi->veb_idx = I40E_NO_VEB; |
| else |
| vsi->veb_idx = veb->veb_idx; |
| } else { |
| /* floating VEB */ |
| vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid; |
| vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx; |
| } |
| |
| i40e_aq_delete_element(&pf->hw, veb->seid, NULL); |
| i40e_veb_clear(veb); |
| |
| return; |
| } |
| |
| /** |
| * i40e_add_veb - create the VEB in the switch |
| * @veb: the VEB to be instantiated |
| * @vsi: the controlling VSI |
| **/ |
| static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi) |
| { |
| bool is_default = (vsi->idx == vsi->back->lan_vsi); |
| int ret; |
| |
| /* get a VEB from the hardware */ |
| ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid, |
| veb->enabled_tc, is_default, &veb->seid, NULL); |
| if (ret) { |
| dev_info(&veb->pf->pdev->dev, |
| "couldn't add VEB, err %d, aq_err %d\n", |
| ret, veb->pf->hw.aq.asq_last_status); |
| return -EPERM; |
| } |
| |
| /* get statistics counter */ |
| ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL, |
| &veb->stats_idx, NULL, NULL, NULL); |
| if (ret) { |
| dev_info(&veb->pf->pdev->dev, |
| "couldn't get VEB statistics idx, err %d, aq_err %d\n", |
| ret, veb->pf->hw.aq.asq_last_status); |
| return -EPERM; |
| } |
| ret = i40e_veb_get_bw_info(veb); |
| if (ret) { |
| dev_info(&veb->pf->pdev->dev, |
| "couldn't get VEB bw info, err %d, aq_err %d\n", |
| ret, veb->pf->hw.aq.asq_last_status); |
| i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL); |
| return -ENOENT; |
| } |
| |
| vsi->uplink_seid = veb->seid; |
| vsi->veb_idx = veb->idx; |
| vsi->flags |= I40E_VSI_FLAG_VEB_OWNER; |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_veb_setup - Set up a VEB |
| * @pf: board private structure |
| * @flags: VEB setup flags |
| * @uplink_seid: the switch element to link to |
| * @vsi_seid: the initial VSI seid |
| * @enabled_tc: Enabled TC bit-map |
| * |
| * This allocates the sw VEB structure and links it into the switch |
| * It is possible and legal for this to be a duplicate of an already |
| * existing VEB. It is also possible for both uplink and vsi seids |
| * to be zero, in order to create a floating VEB. |
| * |
| * Returns pointer to the successfully allocated VEB sw struct on |
| * success, otherwise returns NULL on failure. |
| **/ |
| struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags, |
| u16 uplink_seid, u16 vsi_seid, |
| u8 enabled_tc) |
| { |
| struct i40e_veb *veb, *uplink_veb = NULL; |
| int vsi_idx, veb_idx; |
| int ret; |
| |
| /* if one seid is 0, the other must be 0 to create a floating relay */ |
| if ((uplink_seid == 0 || vsi_seid == 0) && |
| (uplink_seid + vsi_seid != 0)) { |
| dev_info(&pf->pdev->dev, |
| "one, not both seid's are 0: uplink=%d vsi=%d\n", |
| uplink_seid, vsi_seid); |
| return NULL; |
| } |
| |
| /* make sure there is such a vsi and uplink */ |
| for (vsi_idx = 0; vsi_idx < pf->hw.func_caps.num_vsis; vsi_idx++) |
| if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid) |
| break; |
| if (vsi_idx >= pf->hw.func_caps.num_vsis && vsi_seid != 0) { |
| dev_info(&pf->pdev->dev, "vsi seid %d not found\n", |
| vsi_seid); |
| return NULL; |
| } |
| |
| if (uplink_seid && uplink_seid != pf->mac_seid) { |
| for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) { |
| if (pf->veb[veb_idx] && |
| pf->veb[veb_idx]->seid == uplink_seid) { |
| uplink_veb = pf->veb[veb_idx]; |
| break; |
| } |
| } |
| if (!uplink_veb) { |
| dev_info(&pf->pdev->dev, |
| "uplink seid %d not found\n", uplink_seid); |
| return NULL; |
| } |
| } |
| |
| /* get veb sw struct */ |
| veb_idx = i40e_veb_mem_alloc(pf); |
| if (veb_idx < 0) |
| goto err_alloc; |
| veb = pf->veb[veb_idx]; |
| veb->flags = flags; |
| veb->uplink_seid = uplink_seid; |
| veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB); |
| veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1); |
| |
| /* create the VEB in the switch */ |
| ret = i40e_add_veb(veb, pf->vsi[vsi_idx]); |
| if (ret) |
| goto err_veb; |
| |
| return veb; |
| |
| err_veb: |
| i40e_veb_clear(veb); |
| err_alloc: |
| return NULL; |
| } |
| |
| /** |
| * i40e_setup_pf_switch_element - set pf vars based on switch type |
| * @pf: board private structure |
| * @ele: element we are building info from |
| * @num_reported: total number of elements |
| * @printconfig: should we print the contents |
| * |
| * helper function to assist in extracting a few useful SEID values. |
| **/ |
| static void i40e_setup_pf_switch_element(struct i40e_pf *pf, |
| struct i40e_aqc_switch_config_element_resp *ele, |
| u16 num_reported, bool printconfig) |
| { |
| u16 downlink_seid = le16_to_cpu(ele->downlink_seid); |
| u16 uplink_seid = le16_to_cpu(ele->uplink_seid); |
| u8 element_type = ele->element_type; |
| u16 seid = le16_to_cpu(ele->seid); |
| |
| if (printconfig) |
| dev_info(&pf->pdev->dev, |
| "type=%d seid=%d uplink=%d downlink=%d\n", |
| element_type, seid, uplink_seid, downlink_seid); |
| |
| switch (element_type) { |
| case I40E_SWITCH_ELEMENT_TYPE_MAC: |
| pf->mac_seid = seid; |
| break; |
| case I40E_SWITCH_ELEMENT_TYPE_VEB: |
| /* Main VEB? */ |
| if (uplink_seid != pf->mac_seid) |
| break; |
| if (pf->lan_veb == I40E_NO_VEB) { |
| int v; |
| |
| /* find existing or else empty VEB */ |
| for (v = 0; v < I40E_MAX_VEB; v++) { |
| if (pf->veb[v] && (pf->veb[v]->seid == seid)) { |
| pf->lan_veb = v; |
| break; |
| } |
| } |
| if (pf->lan_veb == I40E_NO_VEB) { |
| v = i40e_veb_mem_alloc(pf); |
| if (v < 0) |
| break; |
| pf->lan_veb = v; |
| } |
| } |
| |
| pf->veb[pf->lan_veb]->seid = seid; |
| pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid; |
| pf->veb[pf->lan_veb]->pf = pf; |
| pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB; |
| break; |
| case I40E_SWITCH_ELEMENT_TYPE_VSI: |
| if (num_reported != 1) |
| break; |
| /* This is immediately after a reset so we can assume this is |
| * the PF's VSI |
| */ |
| pf->mac_seid = uplink_seid; |
| pf->pf_seid = downlink_seid; |
| pf->main_vsi_seid = seid; |
| if (printconfig) |
| dev_info(&pf->pdev->dev, |
| "pf_seid=%d main_vsi_seid=%d\n", |
| pf->pf_seid, pf->main_vsi_seid); |
| break; |
| case I40E_SWITCH_ELEMENT_TYPE_PF: |
| case I40E_SWITCH_ELEMENT_TYPE_VF: |
| case I40E_SWITCH_ELEMENT_TYPE_EMP: |
| case I40E_SWITCH_ELEMENT_TYPE_BMC: |
| case I40E_SWITCH_ELEMENT_TYPE_PE: |
| case I40E_SWITCH_ELEMENT_TYPE_PA: |
| /* ignore these for now */ |
| break; |
| default: |
| dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n", |
| element_type, seid); |
| break; |
| } |
| } |
| |
| /** |
| * i40e_fetch_switch_configuration - Get switch config from firmware |
| * @pf: board private structure |
| * @printconfig: should we print the contents |
| * |
| * Get the current switch configuration from the device and |
| * extract a few useful SEID values. |
| **/ |
| int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig) |
| { |
| struct i40e_aqc_get_switch_config_resp *sw_config; |
| u16 next_seid = 0; |
| int ret = 0; |
| u8 *aq_buf; |
| int i; |
| |
| aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL); |
| if (!aq_buf) |
| return -ENOMEM; |
| |
| sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf; |
| do { |
| u16 num_reported, num_total; |
| |
| ret = i40e_aq_get_switch_config(&pf->hw, sw_config, |
| I40E_AQ_LARGE_BUF, |
| &next_seid, NULL); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "get switch config failed %d aq_err=%x\n", |
| ret, pf->hw.aq.asq_last_status); |
| kfree(aq_buf); |
| return -ENOENT; |
| } |
| |
| num_reported = le16_to_cpu(sw_config->header.num_reported); |
| num_total = le16_to_cpu(sw_config->header.num_total); |
| |
| if (printconfig) |
| dev_info(&pf->pdev->dev, |
| "header: %d reported %d total\n", |
| num_reported, num_total); |
| |
| if (num_reported) { |
| int sz = sizeof(*sw_config) * num_reported; |
| |
| kfree(pf->sw_config); |
| pf->sw_config = kzalloc(sz, GFP_KERNEL); |
| if (pf->sw_config) |
| memcpy(pf->sw_config, sw_config, sz); |
| } |
| |
| for (i = 0; i < num_reported; i++) { |
| struct i40e_aqc_switch_config_element_resp *ele = |
| &sw_config->element[i]; |
| |
| i40e_setup_pf_switch_element(pf, ele, num_reported, |
| printconfig); |
| } |
| } while (next_seid != 0); |
| |
| kfree(aq_buf); |
| return ret; |
| } |
| |
| /** |
| * i40e_setup_pf_switch - Setup the HW switch on startup or after reset |
| * @pf: board private structure |
| * |
| * Returns 0 on success, negative value on failure |
| **/ |
| static int i40e_setup_pf_switch(struct i40e_pf *pf) |
| { |
| int ret; |
| |
| /* find out what's out there already */ |
| ret = i40e_fetch_switch_configuration(pf, false); |
| if (ret) { |
| dev_info(&pf->pdev->dev, |
| "couldn't fetch switch config, err %d, aq_err %d\n", |
| ret, pf->hw.aq.asq_last_status); |
| return ret; |
| } |
| i40e_pf_reset_stats(pf); |
| |
| /* fdir VSI must happen first to be sure it gets queue 0, but only |
| * if there is enough room for the fdir VSI |
| */ |
| if (pf->num_lan_qps > 1) |
| i40e_fdir_setup(pf); |
| |
| /* first time setup */ |
| if (pf->lan_vsi == I40E_NO_VSI) { |
| struct i40e_vsi *vsi = NULL; |
| u16 uplink_seid; |
| |
| /* Set up the PF VSI associated with the PF's main VSI |
| * that is already in the HW switch |
| */ |
| if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb]) |
| uplink_seid = pf->veb[pf->lan_veb]->seid; |
| else |
| uplink_seid = pf->mac_seid; |
| |
| vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0); |
| if (!vsi) { |
| dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n"); |
| i40e_fdir_teardown(pf); |
| return -EAGAIN; |
| } |
| /* accommodate kcompat by copying the main VSI queue count |
| * into the pf, since this newer code pushes the pf queue |
| * info down a level into a VSI |
| */ |
| pf->num_rx_queues = vsi->alloc_queue_pairs; |
| pf->num_tx_queues = vsi->alloc_queue_pairs; |
| } else { |
| /* force a reset of TC and queue layout configurations */ |
| u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc; |
| pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0; |
| pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid; |
| i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc); |
| } |
| i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]); |
| |
| /* Setup static PF queue filter control settings */ |
| ret = i40e_setup_pf_filter_control(pf); |
| if (ret) { |
| dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n", |
| ret); |
| /* Failure here should not stop continuing other steps */ |
| } |
| |
| /* enable RSS in the HW, even for only one queue, as the stack can use |
| * the hash |
| */ |
| if ((pf->flags & I40E_FLAG_RSS_ENABLED)) |
| i40e_config_rss(pf); |
| |
| /* fill in link information and enable LSE reporting */ |
| i40e_aq_get_link_info(&pf->hw, true, NULL, NULL); |
| i40e_link_event(pf); |
| |
| /* Initialize user-specifics link properties */ |
| pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info & |
| I40E_AQ_AN_COMPLETED) ? true : false); |
| pf->hw.fc.requested_mode = I40E_FC_DEFAULT; |
| if (pf->hw.phy.link_info.an_info & |
| (I40E_AQ_LINK_PAUSE_TX | I40E_AQ_LINK_PAUSE_RX)) |
| pf->hw.fc.current_mode = I40E_FC_FULL; |
| else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_TX) |
| pf->hw.fc.current_mode = I40E_FC_TX_PAUSE; |
| else if (pf->hw.phy.link_info.an_info & I40E_AQ_LINK_PAUSE_RX) |
| pf->hw.fc.current_mode = I40E_FC_RX_PAUSE; |
| else |
| pf->hw.fc.current_mode = I40E_FC_DEFAULT; |
| |
| return ret; |
| } |
| |
| /** |
| * i40e_set_rss_size - helper to set rss_size |
| * @pf: board private structure |
| * @queues_left: how many queues |
| */ |
| static u16 i40e_set_rss_size(struct i40e_pf *pf, int queues_left) |
| { |
| int num_tc0; |
| |
| num_tc0 = min_t(int, queues_left, pf->rss_size_max); |
| num_tc0 = min_t(int, num_tc0, nr_cpus_node(numa_node_id())); |
| num_tc0 = rounddown_pow_of_two(num_tc0); |
| |
| return num_tc0; |
| } |
| |
| /** |
| * i40e_determine_queue_usage - Work out queue distribution |
| * @pf: board private structure |
| **/ |
| static void i40e_determine_queue_usage(struct i40e_pf *pf) |
| { |
| int accum_tc_size; |
| int queues_left; |
| |
| pf->num_lan_qps = 0; |
| pf->num_tc_qps = rounddown_pow_of_two(pf->num_tc_qps); |
| accum_tc_size = (I40E_MAX_TRAFFIC_CLASS - 1) * pf->num_tc_qps; |
| |
| /* Find the max queues to be put into basic use. We'll always be |
| * using TC0, whether or not DCB is running, and TC0 will get the |
| * big RSS set. |
| */ |
| queues_left = pf->hw.func_caps.num_tx_qp; |
| |
| if (!((pf->flags & I40E_FLAG_MSIX_ENABLED) && |
| (pf->flags & I40E_FLAG_MQ_ENABLED)) || |
| !(pf->flags & (I40E_FLAG_RSS_ENABLED | |
| I40E_FLAG_FDIR_ENABLED | I40E_FLAG_DCB_ENABLED)) || |
| (queues_left == 1)) { |
| |
| /* one qp for PF, no queues for anything else */ |
| queues_left = 0; |
| pf->rss_size = pf->num_lan_qps = 1; |
| |
| /* make sure all the fancies are disabled */ |
| pf->flags &= ~(I40E_FLAG_RSS_ENABLED | |
| I40E_FLAG_MQ_ENABLED | |
| I40E_FLAG_FDIR_ENABLED | |
| I40E_FLAG_FDIR_ATR_ENABLED | |
| I40E_FLAG_DCB_ENABLED | |
| I40E_FLAG_SRIOV_ENABLED | |
| I40E_FLAG_VMDQ_ENABLED); |
| |
| } else if (pf->flags & I40E_FLAG_RSS_ENABLED && |
| !(pf->flags & I40E_FLAG_FDIR_ENABLED) && |
| !(pf->flags & I40E_FLAG_DCB_ENABLED)) { |
| |
| pf->rss_size = i40e_set_rss_size(pf, queues_left); |
| |
| queues_left -= pf->rss_size; |
| pf->num_lan_qps = pf->rss_size; |
| |
| } else if (pf->flags & I40E_FLAG_RSS_ENABLED && |
| !(pf->flags & I40E_FLAG_FDIR_ENABLED) && |
| (pf->flags & I40E_FLAG_DCB_ENABLED)) { |
| |
| /* save num_tc_qps queues for TCs 1 thru 7 and the rest |
| * are set up for RSS in TC0 |
| */ |
| queues_left -= accum_tc_size; |
| |
| pf->rss_size = i40e_set_rss_size(pf, queues_left); |
| |
| queues_left -= pf->rss_size; |
| if (queues_left < 0) { |
| dev_info(&pf->pdev->dev, "not enough queues for DCB\n"); |
| return; |
| } |
| |
| pf->num_lan_qps = pf->rss_size + accum_tc_size; |
| |
| } else if (pf->flags & I40E_FLAG_RSS_ENABLED && |
| (pf->flags & I40E_FLAG_FDIR_ENABLED) && |
| !(pf->flags & I40E_FLAG_DCB_ENABLED)) { |
| |
| queues_left -= 1; /* save 1 queue for FD */ |
| |
| pf->rss_size = i40e_set_rss_size(pf, queues_left); |
| |
| queues_left -= pf->rss_size; |
| if (queues_left < 0) { |
| dev_info(&pf->pdev->dev, "not enough queues for Flow Director\n"); |
| return; |
| } |
| |
| pf->num_lan_qps = pf->rss_size; |
| |
| } else if (pf->flags & I40E_FLAG_RSS_ENABLED && |
| (pf->flags & I40E_FLAG_FDIR_ENABLED) && |
| (pf->flags & I40E_FLAG_DCB_ENABLED)) { |
| |
| /* save 1 queue for TCs 1 thru 7, |
| * 1 queue for flow director, |
| * and the rest are set up for RSS in TC0 |
| */ |
| queues_left -= 1; |
| queues_left -= accum_tc_size; |
| |
| pf->rss_size = i40e_set_rss_size(pf, queues_left); |
| queues_left -= pf->rss_size; |
| if (queues_left < 0) { |
| dev_info(&pf->pdev->dev, "not enough queues for DCB and Flow Director\n"); |
| return; |
| } |
| |
| pf->num_lan_qps = pf->rss_size + accum_tc_size; |
| |
| } else { |
| dev_info(&pf->pdev->dev, |
| "Invalid configuration, flags=0x%08llx\n", pf->flags); |
| return; |
| } |
| |
| if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) && |
| pf->num_vf_qps && pf->num_req_vfs && queues_left) { |
| pf->num_req_vfs = min_t(int, pf->num_req_vfs, (queues_left / |
| pf->num_vf_qps)); |
| queues_left -= (pf->num_req_vfs * pf->num_vf_qps); |
| } |
| |
| if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) && |
| pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) { |
| pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis, |
| (queues_left / pf->num_vmdq_qps)); |
| queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps); |
| } |
| |
| return; |
| } |
| |
| /** |
| * i40e_setup_pf_filter_control - Setup PF static filter control |
| * @pf: PF to be setup |
| * |
| * i40e_setup_pf_filter_control sets up a pf's initial filter control |
| * settings. If PE/FCoE are enabled then it will also set the per PF |
| * based filter sizes required for them. It also enables Flow director, |
| * ethertype and macvlan type filter settings for the pf. |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int i40e_setup_pf_filter_control(struct i40e_pf *pf) |
| { |
| struct i40e_filter_control_settings *settings = &pf->filter_settings; |
| |
| settings->hash_lut_size = I40E_HASH_LUT_SIZE_128; |
| |
| /* Flow Director is enabled */ |
| if (pf->flags & (I40E_FLAG_FDIR_ENABLED | I40E_FLAG_FDIR_ATR_ENABLED)) |
| settings->enable_fdir = true; |
| |
| /* Ethtype and MACVLAN filters enabled for PF */ |
| settings->enable_ethtype = true; |
| settings->enable_macvlan = true; |
| |
| if (i40e_set_filter_control(&pf->hw, settings)) |
| return -ENOENT; |
| |
| return 0; |
| } |
| |
| /** |
| * i40e_probe - Device initialization routine |
| * @pdev: PCI device information struct |
| * @ent: entry in i40e_pci_tbl |
| * |
| * i40e_probe initializes a pf identified by a pci_dev structure. |
| * The OS initialization, configuring of the pf private structure, |
| * and a hardware reset occur. |
| * |
| * Returns 0 on success, negative on failure |
| **/ |
| static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| struct i40e_driver_version dv; |
| struct i40e_pf *pf; |
| struct i40e_hw *hw; |
| int err = 0; |
| u32 len; |
| |
| err = pci_enable_device_mem(pdev); |
| if (err) |
| return err; |
| |
| /* set up for high or low dma */ |
| if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { |
| /* coherent mask for the same size will always succeed if |
| * dma_set_mask does |
| */ |
| dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
| } else if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { |
| dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
| } else { |
| dev_err(&pdev->dev, "DMA configuration failed: %d\n", err); |
| err = -EIO; |
| goto err_dma; |
| } |
| |
| /* set up pci connections */ |
| err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
| IORESOURCE_MEM), i40e_driver_name); |
| if (err) { |
| dev_info(&pdev->dev, |
| "pci_request_selected_regions failed %d\n", err); |
| goto err_pci_reg; |
| } |
| |
| pci_enable_pcie_error_reporting(pdev); |
| pci_set_master(pdev); |
| |
| /* Now that we have a PCI connection, we need to do the |
| * low level device setup. This is primarily setting up |
| * the Admin Queue structures and then querying for the |
| * device's current profile information. |
| */ |
| pf = kzalloc(sizeof(*pf), GFP_KERNEL); |
| if (!pf) { |
| err = -ENOMEM; |
| goto err_pf_alloc; |
| } |
| pf->next_vsi = 0; |
| pf->pdev = pdev; |
| set_bit(__I40E_DOWN, &pf->state); |
| |
| hw = &pf->hw; |
| hw->back = pf; |
| hw->hw_addr = ioremap(pci_resource_start(pdev, 0), |
| pci_resource_len(pdev, 0)); |
| if (!hw->hw_addr) { |
| err = -EIO; |
| dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n", |
| (unsigned int)pci_resource_start(pdev, 0), |
| (unsigned int)pci_resource_len(pdev, 0), err); |
| goto err_ioremap; |
| } |
| hw->vendor_id = pdev->vendor; |
| hw->device_id = pdev->device; |
| pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); |
| hw->subsystem_vendor_id = pdev->subsystem_vendor; |
| hw->subsystem_device_id = pdev->subsystem_device; |
| hw->bus.device = PCI_SLOT(pdev->devfn); |
| hw->bus.func = PCI_FUNC(pdev->devfn); |
| |
| /* Reset here to make sure all is clean and to define PF 'n' */ |
| err = i40e_pf_reset(hw); |
| if (err) { |
| dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err); |
| goto err_pf_reset; |
| } |
| pf->pfr_count++; |
| |
| hw->aq.num_arq_entries = I40E_AQ_LEN; |
| hw->aq.num_asq_entries = I40E_AQ_LEN; |
| hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE; |
| hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE; |
| pf->adminq_work_limit = I40E_AQ_WORK_LIMIT; |
| snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1, |
| "%s-pf%d:misc", |
| dev_driver_string(&pf->pdev->dev), pf->hw.pf_id); |
| |
| err = i40e_init_shared_code(hw); |
| if (err) { |
| dev_info(&pdev->dev, "init_shared_code failed: %d\n", err); |
| goto err_pf_reset; |
| } |
| |
| err = i40e_init_adminq(hw); |
| dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw)); |
| if (((hw->nvm.version & I40E_NVM_VERSION_HI_MASK) |
| >> I40E_NVM_VERSION_HI_SHIFT) != I40E_CURRENT_NVM_VERSION_HI) { |
| dev_info(&pdev->dev, |
| "warning: NVM version not supported, supported version: %02x.%02x\n", |
| I40E_CURRENT_NVM_VERSION_HI, |
| I40E_CURRENT_NVM_VERSION_LO); |
| } |
| if (err) { |
| dev_info(&pdev->dev, |
| "init_adminq failed: %d expecting API %02x.%02x\n", |
| err, |
| I40E_FW_API_VERSION_MAJOR, I40E_FW_API_VERSION_MINOR); |
| goto err_pf_reset; |
| } |
| |
| err = i40e_get_capabilities(pf); |
| if (err) |
| goto err_adminq_setup; |
| |
| err = i40e_sw_init(pf); |
| if (err) { |
| dev_info(&pdev->dev, "sw_init failed: %d\n", err); |
| goto err_sw_init; |
| } |
| |
| err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp, |
| hw->func_caps.num_rx_qp, |
| pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num); |
| if (err) { |
| dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err); |
| goto err_init_lan_hmc; |
| } |
| |
| err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY); |
| if (err) { |
| dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err); |
| err = -ENOENT; |
| goto err_configure_lan_hmc; |
| } |
| |
| i40e_get_mac_addr(hw, hw->mac.addr); |
| if (i40e_validate_mac_addr(hw->mac.addr)) { |
| dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr); |
| err = -EIO; |
| goto err_mac_addr; |
| } |
| dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr); |
| memcpy(hw->mac.perm_addr, hw->mac.addr, ETH_ALEN); |
| |
| pci_set_drvdata(pdev, pf); |
| pci_save_state(pdev); |
| |
| /* set up periodic task facility */ |
| setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf); |
| pf->service_timer_period = HZ; |
| |
| INIT_WORK(&pf->service_task, i40e_service_task); |
| clear_bit(__I40E_SERVICE_SCHED, &pf->state); |
| pf->flags |= I40E_FLAG_NEED_LINK_UPDATE; |
| pf->link_check_timeout = jiffies; |
| |
| /* set up the main switch operations */ |
| i40e_determine_queue_usage(pf); |
| i40e_init_interrupt_scheme(pf); |
| |
| /* Set up the *vsi struct based on the number of VSIs in the HW, |
| * and set up our local tracking of the MAIN PF vsi. |
| */ |
| len = sizeof(struct i40e_vsi *) * pf->hw.func_caps.num_vsis; |
| pf->vsi = kzalloc(len, GFP_KERNEL); |
| if (!pf->vsi) { |
| err = -ENOMEM; |
| goto err_switch_setup; |
| } |
| |
| err = i40e_setup_pf_switch(pf); |
| if (err) { |
| dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err); |
| goto err_vsis; |
| } |
| |
| /* The main driver is (mostly) up and happy. We need to set this state |
| * before setting up the misc vector or we get a race and the vector |
| * ends up disabled forever. |
| */ |
| clear_bit(__I40E_DOWN, &pf->state); |
| |
| /* In case of MSIX we are going to setup the misc vector right here |
| * to handle admin queue events etc. In case of legacy and MSI |
| * the misc functionality and queue processing is combined in |
| * the same vector and that gets setup at open. |
| */ |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) { |
| err = i40e_setup_misc_vector(pf); |
| if (err) { |
| dev_info(&pdev->dev, |
| "setup of misc vector failed: %d\n", err); |
| goto err_vsis; |
| } |
| } |
| |
| /* prep for VF support */ |
| if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) && |
| (pf->flags & I40E_FLAG_MSIX_ENABLED)) { |
| u32 val; |
| |
| /* disable link interrupts for VFs */ |
| val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM); |
| val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK; |
| wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val); |
| i40e_flush(hw); |
| } |
| |
| i40e_dbg_pf_init(pf); |
| |
| /* tell the firmware that we're starting */ |
| dv.major_version = DRV_VERSION_MAJOR; |
| dv.minor_version = DRV_VERSION_MINOR; |
| dv.build_version = DRV_VERSION_BUILD; |
| dv.subbuild_version = 0; |
| i40e_aq_send_driver_version(&pf->hw, &dv, NULL); |
| |
| /* since everything's happy, start the service_task timer */ |
| mod_timer(&pf->service_timer, |
| round_jiffies(jiffies + pf->service_timer_period)); |
| |
| return 0; |
| |
| /* Unwind what we've done if something failed in the setup */ |
| err_vsis: |
| set_bit(__I40E_DOWN, &pf->state); |
| err_switch_setup: |
| i40e_clear_interrupt_scheme(pf); |
| kfree(pf->vsi); |
| del_timer_sync(&pf->service_timer); |
| err_mac_addr: |
| err_configure_lan_hmc: |
| (void)i40e_shutdown_lan_hmc(hw); |
| err_init_lan_hmc: |
| kfree(pf->qp_pile); |
| kfree(pf->irq_pile); |
| err_sw_init: |
| err_adminq_setup: |
| (void)i40e_shutdown_adminq(hw); |
| err_pf_reset: |
| iounmap(hw->hw_addr); |
| err_ioremap: |
| kfree(pf); |
| err_pf_alloc: |
| pci_disable_pcie_error_reporting(pdev); |
| pci_release_selected_regions(pdev, |
| pci_select_bars(pdev, IORESOURCE_MEM)); |
| err_pci_reg: |
| err_dma: |
| pci_disable_device(pdev); |
| return err; |
| } |
| |
| /** |
| * i40e_remove - Device removal routine |
| * @pdev: PCI device information struct |
| * |
| * i40e_remove is called by the PCI subsystem to alert the driver |
| * that is should release a PCI device. This could be caused by a |
| * Hot-Plug event, or because the driver is going to be removed from |
| * memory. |
| **/ |
| static void i40e_remove(struct pci_dev *pdev) |
| { |
| struct i40e_pf *pf = pci_get_drvdata(pdev); |
| i40e_status ret_code; |
| u32 reg; |
| int i; |
| |
| i40e_dbg_pf_exit(pf); |
| |
| if (pf->flags & I40E_FLAG_SRIOV_ENABLED) { |
| i40e_free_vfs(pf); |
| pf->flags &= ~I40E_FLAG_SRIOV_ENABLED; |
| } |
| |
| /* no more scheduling of any task */ |
| set_bit(__I40E_DOWN, &pf->state); |
| del_timer_sync(&pf->service_timer); |
| cancel_work_sync(&pf->service_task); |
| |
| i40e_fdir_teardown(pf); |
| |
| /* If there is a switch structure or any orphans, remove them. |
| * This will leave only the PF's VSI remaining. |
| */ |
| for (i = 0; i < I40E_MAX_VEB; i++) { |
| if (!pf->veb[i]) |
| continue; |
| |
| if (pf->veb[i]->uplink_seid == pf->mac_seid || |
| pf->veb[i]->uplink_seid == 0) |
| i40e_switch_branch_release(pf->veb[i]); |
| } |
| |
| /* Now we can shutdown the PF's VSI, just before we kill |
| * adminq and hmc. |
| */ |
| if (pf->vsi[pf->lan_vsi]) |
| i40e_vsi_release(pf->vsi[pf->lan_vsi]); |
| |
| i40e_stop_misc_vector(pf); |
| if (pf->flags & I40E_FLAG_MSIX_ENABLED) { |
| synchronize_irq(pf->msix_entries[0].vector); |
| free_irq(pf->msix_entries[0].vector, pf); |
| } |
| |
| /* shutdown and destroy the HMC */ |
| ret_code = i40e_shutdown_lan_hmc(&pf->hw); |
| if (ret_code) |
| dev_warn(&pdev->dev, |
| "Failed to destroy the HMC resources: %d\n", ret_code); |
| |
| /* shutdown the adminq */ |
| i40e_aq_queue_shutdown(&pf->hw, true); |
| ret_code = i40e_shutdown_adminq(&pf->hw); |
| if (ret_code) |
| dev_warn(&pdev->dev, |
| "Failed to destroy the Admin Queue resources: %d\n", |
| ret_code); |
| |
| /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */ |
| i40e_clear_interrupt_scheme(pf); |
| for (i = 0; i < pf->hw.func_caps.num_vsis; i++) { |
| if (pf->vsi[i]) { |
| i40e_vsi_clear_rings(pf->vsi[i]); |
| i40e_vsi_clear(pf->vsi[i]); |
| pf->vsi[i] = NULL; |
| } |
| } |
| |
| for (i = 0; i < I40E_MAX_VEB; i++) { |
| kfree(pf->veb[i]); |
| pf->veb[i] = NULL; |
| } |
| |
| kfree(pf->qp_pile); |
| kfree(pf->irq_pile); |
| kfree(pf->sw_config); |
| kfree(pf->vsi); |
| |
| /* force a PF reset to clean anything leftover */ |
| reg = rd32(&pf->hw, I40E_PFGEN_CTRL); |
| wr32(&pf->hw, I40E_PFGEN_CTRL, (reg | I40E_PFGEN_CTRL_PFSWR_MASK)); |
| i40e_flush(&pf->hw); |
| |
| iounmap(pf->hw.hw_addr); |
| kfree(pf); |
| pci_release_selected_regions(pdev, |
| pci_select_bars(pdev, IORESOURCE_MEM)); |
| |
| pci_disable_pcie_error_reporting(pdev); |
| pci_disable_device(pdev); |
| } |
| |
| /** |
| * i40e_pci_error_detected - warning that something funky happened in PCI land |
| * @pdev: PCI device information struct |
| * |
| * Called to warn that something happened and the error handling steps |
| * are in progress. Allows the driver to quiesce things, be ready for |
| * remediation. |
| **/ |
| static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev, |
| enum pci_channel_state error) |
| { |
| struct i40e_pf *pf = pci_get_drvdata(pdev); |
| |
| dev_info(&pdev->dev, "%s: error %d\n", __func__, error); |
| |
| /* shutdown all operations */ |
| i40e_pf_quiesce_all_vsi(pf); |
| |
| /* Request a slot reset */ |
| return PCI_ERS_RESULT_NEED_RESET; |
| } |
| |
| /** |
| * i40e_pci_error_slot_reset - a PCI slot reset just happened |
| * @pdev: PCI device information struct |
| * |
| * Called to find if the driver can work with the device now that |
| * the pci slot has been reset. If a basic connection seems good |
| * (registers are readable and have sane content) then return a |
| * happy little PCI_ERS_RESULT_xxx. |
| **/ |
| static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev) |
| { |
| struct i40e_pf *pf = pci_get_drvdata(pdev); |
| pci_ers_result_t result; |
| int err; |
| u32 reg; |
| |
| dev_info(&pdev->dev, "%s\n", __func__); |
| if (pci_enable_device_mem(pdev)) { |
| dev_info(&pdev->dev, |
| "Cannot re-enable PCI device after reset.\n"); |
| result = PCI_ERS_RESULT_DISCONNECT; |
| } else { |
| pci_set_master(pdev); |
| pci_restore_state(pdev); |
| pci_save_state(pdev); |
| pci_wake_from_d3(pdev, false); |
| |
| reg = rd32(&pf->hw, I40E_GLGEN_RTRIG); |
| if (reg == 0) |
| result = PCI_ERS_RESULT_RECOVERED; |
| else |
| result = PCI_ERS_RESULT_DISCONNECT; |
| } |
| |
| err = pci_cleanup_aer_uncorrect_error_status(pdev); |
| if (err) { |
| dev_info(&pdev->dev, |
| "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", |
| err); |
| /* non-fatal, continue */ |
| } |
| |
| return result; |
| } |
| |
| /** |
| * i40e_pci_error_resume - restart operations after PCI error recovery |
| * @pdev: PCI device information struct |
| * |
| * Called to allow the driver to bring things back up after PCI error |
| * and/or reset recovery has finished. |
| **/ |
| static void i40e_pci_error_resume(struct pci_dev *pdev) |
| { |
| struct i40e_pf *pf = pci_get_drvdata(pdev); |
| |
| dev_info(&pdev->dev, "%s\n", __func__); |
| i40e_handle_reset_warning(pf); |
| } |
| |
| static const struct pci_error_handlers i40e_err_handler = { |
| .error_detected = i40e_pci_error_detected, |
| .slot_reset = i40e_pci_error_slot_reset, |
| .resume = i40e_pci_error_resume, |
| }; |
| |
| static struct pci_driver i40e_driver = { |
| .name = i40e_driver_name, |
| .id_table = i40e_pci_tbl, |
| .probe = i40e_probe, |
| .remove = i40e_remove, |
| .err_handler = &i40e_err_handler, |
| .sriov_configure = i40e_pci_sriov_configure, |
| }; |
| |
| /** |
| * i40e_init_module - Driver registration routine |
| * |
| * i40e_init_module is the first routine called when the driver is |
| * loaded. All it does is register with the PCI subsystem. |
| **/ |
| static int __init i40e_init_module(void) |
| { |
| pr_info("%s: %s - version %s\n", i40e_driver_name, |
| i40e_driver_string, i40e_driver_version_str); |
| pr_info("%s: %s\n", i40e_driver_name, i40e_copyright); |
| i40e_dbg_init(); |
| return pci_register_driver(&i40e_driver); |
| } |
| module_init(i40e_init_module); |
| |
| /** |
| * i40e_exit_module - Driver exit cleanup routine |
| * |
| * i40e_exit_module is called just before the driver is removed |
| * from memory. |
| **/ |
| static void __exit i40e_exit_module(void) |
| { |
| pci_unregister_driver(&i40e_driver); |
| i40e_dbg_exit(); |
| } |
| module_exit(i40e_exit_module); |