summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/intel/igc/igc.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--drivers/net/ethernet/intel/igc/igc.h599
1 files changed, 599 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc.h b/drivers/net/ethernet/intel/igc/igc.h
new file mode 100644
index 000000000..31af08ceb
--- /dev/null
+++ b/drivers/net/ethernet/intel/igc/igc.h
@@ -0,0 +1,599 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2018 Intel Corporation */
+
+#ifndef _IGC_H_
+#define _IGC_H_
+
+#include <linux/kobject.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/vmalloc.h>
+#include <linux/ethtool.h>
+#include <linux/sctp.h>
+#include <linux/ptp_clock_kernel.h>
+#include <linux/timecounter.h>
+#include <linux/net_tstamp.h>
+#include <linux/bitfield.h>
+
+#include "igc_hw.h"
+
+void igc_ethtool_set_ops(struct net_device *);
+
+/* Transmit and receive queues */
+#define IGC_MAX_RX_QUEUES 4
+#define IGC_MAX_TX_QUEUES 4
+
+#define MAX_Q_VECTORS 8
+#define MAX_STD_JUMBO_FRAME_SIZE 9216
+
+#define MAX_ETYPE_FILTER 8
+#define IGC_RETA_SIZE 128
+
+enum igc_mac_filter_type {
+ IGC_MAC_FILTER_TYPE_DST = 0,
+ IGC_MAC_FILTER_TYPE_SRC
+};
+
+struct igc_tx_queue_stats {
+ u64 packets;
+ u64 bytes;
+ u64 restart_queue;
+ u64 restart_queue2;
+};
+
+struct igc_rx_queue_stats {
+ u64 packets;
+ u64 bytes;
+ u64 drops;
+ u64 csum_err;
+ u64 alloc_failed;
+};
+
+struct igc_rx_packet_stats {
+ u64 ipv4_packets; /* IPv4 headers processed */
+ u64 ipv4e_packets; /* IPv4E headers with extensions processed */
+ u64 ipv6_packets; /* IPv6 headers processed */
+ u64 ipv6e_packets; /* IPv6E headers with extensions processed */
+ u64 tcp_packets; /* TCP headers processed */
+ u64 udp_packets; /* UDP headers processed */
+ u64 sctp_packets; /* SCTP headers processed */
+ u64 nfs_packets; /* NFS headers processe */
+ u64 other_packets;
+};
+
+struct igc_ring_container {
+ struct igc_ring *ring; /* pointer to linked list of rings */
+ unsigned int total_bytes; /* total bytes processed this int */
+ unsigned int total_packets; /* total packets processed this int */
+ u16 work_limit; /* total work allowed per interrupt */
+ u8 count; /* total number of rings in vector */
+ u8 itr; /* current ITR setting for ring */
+};
+
+struct igc_ring {
+ struct igc_q_vector *q_vector; /* backlink to q_vector */
+ struct net_device *netdev; /* back pointer to net_device */
+ struct device *dev; /* device for dma mapping */
+ union { /* array of buffer info structs */
+ struct igc_tx_buffer *tx_buffer_info;
+ struct igc_rx_buffer *rx_buffer_info;
+ };
+ void *desc; /* descriptor ring memory */
+ unsigned long flags; /* ring specific flags */
+ void __iomem *tail; /* pointer to ring tail register */
+ dma_addr_t dma; /* phys address of the ring */
+ unsigned int size; /* length of desc. ring in bytes */
+
+ u16 count; /* number of desc. in the ring */
+ u8 queue_index; /* logical index of the ring*/
+ u8 reg_idx; /* physical index of the ring */
+ bool launchtime_enable; /* true if LaunchTime is enabled */
+ ktime_t last_tx_cycle; /* end of the cycle with a launchtime transmission */
+ ktime_t last_ff_cycle; /* Last cycle with an active first flag */
+
+ u32 start_time;
+ u32 end_time;
+
+ /* everything past this point are written often */
+ u16 next_to_clean;
+ u16 next_to_use;
+ u16 next_to_alloc;
+
+ union {
+ /* TX */
+ struct {
+ struct igc_tx_queue_stats tx_stats;
+ struct u64_stats_sync tx_syncp;
+ struct u64_stats_sync tx_syncp2;
+ };
+ /* RX */
+ struct {
+ struct igc_rx_queue_stats rx_stats;
+ struct igc_rx_packet_stats pkt_stats;
+ struct u64_stats_sync rx_syncp;
+ struct sk_buff *skb;
+ };
+ };
+} ____cacheline_internodealigned_in_smp;
+
+/* Board specific private data structure */
+struct igc_adapter {
+ struct net_device *netdev;
+
+ struct ethtool_eee eee;
+ u16 eee_advert;
+
+ unsigned long state;
+ unsigned int flags;
+ unsigned int num_q_vectors;
+
+ struct msix_entry *msix_entries;
+
+ /* TX */
+ u16 tx_work_limit;
+ u32 tx_timeout_count;
+ int num_tx_queues;
+ struct igc_ring *tx_ring[IGC_MAX_TX_QUEUES];
+
+ /* RX */
+ int num_rx_queues;
+ struct igc_ring *rx_ring[IGC_MAX_RX_QUEUES];
+
+ struct timer_list watchdog_timer;
+ struct timer_list dma_err_timer;
+ struct timer_list phy_info_timer;
+
+ u32 wol;
+ u32 en_mng_pt;
+ u16 link_speed;
+ u16 link_duplex;
+
+ u8 port_num;
+
+ u8 __iomem *io_addr;
+ /* Interrupt Throttle Rate */
+ u32 rx_itr_setting;
+ u32 tx_itr_setting;
+
+ struct work_struct reset_task;
+ struct work_struct watchdog_task;
+ struct work_struct dma_err_task;
+ bool fc_autoneg;
+
+ u8 tx_timeout_factor;
+
+ int msg_enable;
+ u32 max_frame_size;
+ u32 min_frame_size;
+
+ ktime_t base_time;
+ ktime_t cycle_time;
+
+ /* OS defined structs */
+ struct pci_dev *pdev;
+ /* lock for statistics */
+ spinlock_t stats64_lock;
+ struct rtnl_link_stats64 stats64;
+
+ /* structs defined in igc_hw.h */
+ struct igc_hw hw;
+ struct igc_hw_stats stats;
+
+ struct igc_q_vector *q_vector[MAX_Q_VECTORS];
+ u32 eims_enable_mask;
+ u32 eims_other;
+
+ u16 tx_ring_count;
+ u16 rx_ring_count;
+
+ u32 tx_hwtstamp_timeouts;
+ u32 tx_hwtstamp_skipped;
+ u32 rx_hwtstamp_cleared;
+
+ u32 rss_queues;
+ u32 rss_indir_tbl_init;
+
+ /* Any access to elements in nfc_rule_list is protected by the
+ * nfc_rule_lock.
+ */
+ struct mutex nfc_rule_lock;
+ struct list_head nfc_rule_list;
+ unsigned int nfc_rule_count;
+
+ u8 rss_indir_tbl[IGC_RETA_SIZE];
+
+ unsigned long link_check_timeout;
+ struct igc_info ei;
+
+ u32 test_icr;
+
+ struct ptp_clock *ptp_clock;
+ struct ptp_clock_info ptp_caps;
+ struct work_struct ptp_tx_work;
+ /* Access to ptp_tx_skb and ptp_tx_start are protected by the
+ * ptp_tx_lock.
+ */
+ spinlock_t ptp_tx_lock;
+ struct sk_buff *ptp_tx_skb;
+ struct hwtstamp_config tstamp_config;
+ unsigned long ptp_tx_start;
+ unsigned int ptp_flags;
+ /* System time value lock */
+ spinlock_t tmreg_lock;
+ struct cyclecounter cc;
+ struct timecounter tc;
+ struct timespec64 prev_ptp_time; /* Pre-reset PTP clock */
+ ktime_t ptp_reset_start; /* Reset time in clock mono */
+};
+
+void igc_up(struct igc_adapter *adapter);
+void igc_down(struct igc_adapter *adapter);
+int igc_open(struct net_device *netdev);
+int igc_close(struct net_device *netdev);
+int igc_setup_tx_resources(struct igc_ring *ring);
+int igc_setup_rx_resources(struct igc_ring *ring);
+void igc_free_tx_resources(struct igc_ring *ring);
+void igc_free_rx_resources(struct igc_ring *ring);
+unsigned int igc_get_max_rss_queues(struct igc_adapter *adapter);
+void igc_set_flag_queue_pairs(struct igc_adapter *adapter,
+ const u32 max_rss_queues);
+int igc_reinit_queues(struct igc_adapter *adapter);
+void igc_write_rss_indir_tbl(struct igc_adapter *adapter);
+bool igc_has_link(struct igc_adapter *adapter);
+void igc_reset(struct igc_adapter *adapter);
+int igc_set_spd_dplx(struct igc_adapter *adapter, u32 spd, u8 dplx);
+void igc_update_stats(struct igc_adapter *adapter);
+
+/* igc_dump declarations */
+void igc_rings_dump(struct igc_adapter *adapter);
+void igc_regs_dump(struct igc_adapter *adapter);
+
+extern char igc_driver_name[];
+
+#define IGC_REGS_LEN 740
+
+/* flags controlling PTP/1588 function */
+#define IGC_PTP_ENABLED BIT(0)
+
+/* Flags definitions */
+#define IGC_FLAG_HAS_MSI BIT(0)
+#define IGC_FLAG_QUEUE_PAIRS BIT(3)
+#define IGC_FLAG_DMAC BIT(4)
+#define IGC_FLAG_PTP BIT(8)
+#define IGC_FLAG_WOL_SUPPORTED BIT(8)
+#define IGC_FLAG_NEED_LINK_UPDATE BIT(9)
+#define IGC_FLAG_MEDIA_RESET BIT(10)
+#define IGC_FLAG_MAS_ENABLE BIT(12)
+#define IGC_FLAG_HAS_MSIX BIT(13)
+#define IGC_FLAG_EEE BIT(14)
+#define IGC_FLAG_VLAN_PROMISC BIT(15)
+#define IGC_FLAG_RX_LEGACY BIT(16)
+#define IGC_FLAG_TSN_QBV_ENABLED BIT(17)
+
+#define IGC_FLAG_RSS_FIELD_IPV4_UDP BIT(6)
+#define IGC_FLAG_RSS_FIELD_IPV6_UDP BIT(7)
+
+#define IGC_MRQC_ENABLE_RSS_MQ 0x00000002
+#define IGC_MRQC_RSS_FIELD_IPV4_UDP 0x00400000
+#define IGC_MRQC_RSS_FIELD_IPV6_UDP 0x00800000
+
+/* RX-desc Write-Back format RSS Type's */
+enum igc_rss_type_num {
+ IGC_RSS_TYPE_NO_HASH = 0,
+ IGC_RSS_TYPE_HASH_TCP_IPV4 = 1,
+ IGC_RSS_TYPE_HASH_IPV4 = 2,
+ IGC_RSS_TYPE_HASH_TCP_IPV6 = 3,
+ IGC_RSS_TYPE_HASH_IPV6_EX = 4,
+ IGC_RSS_TYPE_HASH_IPV6 = 5,
+ IGC_RSS_TYPE_HASH_TCP_IPV6_EX = 6,
+ IGC_RSS_TYPE_HASH_UDP_IPV4 = 7,
+ IGC_RSS_TYPE_HASH_UDP_IPV6 = 8,
+ IGC_RSS_TYPE_HASH_UDP_IPV6_EX = 9,
+ IGC_RSS_TYPE_MAX = 10,
+};
+#define IGC_RSS_TYPE_MAX_TABLE 16
+#define IGC_RSS_TYPE_MASK GENMASK(3,0) /* 4-bits (3:0) = mask 0x0F */
+
+/* igc_rss_type - Rx descriptor RSS type field */
+static inline u32 igc_rss_type(const union igc_adv_rx_desc *rx_desc)
+{
+ /* RSS Type 4-bits (3:0) number: 0-9 (above 9 is reserved)
+ * Accessing the same bits via u16 (wb.lower.lo_dword.hs_rss.pkt_info)
+ * is slightly slower than via u32 (wb.lower.lo_dword.data)
+ */
+ return le32_get_bits(rx_desc->wb.lower.lo_dword.data, IGC_RSS_TYPE_MASK);
+}
+
+/* Interrupt defines */
+#define IGC_START_ITR 648 /* ~6000 ints/sec */
+#define IGC_4K_ITR 980
+#define IGC_20K_ITR 196
+#define IGC_70K_ITR 56
+
+#define IGC_DEFAULT_ITR 3 /* dynamic */
+#define IGC_MAX_ITR_USECS 10000
+#define IGC_MIN_ITR_USECS 10
+#define NON_Q_VECTORS 1
+#define MAX_MSIX_ENTRIES 10
+
+/* TX/RX descriptor defines */
+#define IGC_DEFAULT_TXD 256
+#define IGC_DEFAULT_TX_WORK 128
+#define IGC_MIN_TXD 64
+#define IGC_MAX_TXD 4096
+
+#define IGC_DEFAULT_RXD 256
+#define IGC_MIN_RXD 64
+#define IGC_MAX_RXD 4096
+
+/* Supported Rx Buffer Sizes */
+#define IGC_RXBUFFER_256 256
+#define IGC_RXBUFFER_2048 2048
+#define IGC_RXBUFFER_3072 3072
+
+#define AUTO_ALL_MODES 0
+#define IGC_RX_HDR_LEN IGC_RXBUFFER_256
+
+/* Transmit and receive latency (for PTP timestamps) */
+#define IGC_I225_TX_LATENCY_10 240
+#define IGC_I225_TX_LATENCY_100 58
+#define IGC_I225_TX_LATENCY_1000 80
+#define IGC_I225_TX_LATENCY_2500 1325
+#define IGC_I225_RX_LATENCY_10 6450
+#define IGC_I225_RX_LATENCY_100 185
+#define IGC_I225_RX_LATENCY_1000 300
+#define IGC_I225_RX_LATENCY_2500 1485
+
+/* RX and TX descriptor control thresholds.
+ * PTHRESH - MAC will consider prefetch if it has fewer than this number of
+ * descriptors available in its onboard memory.
+ * Setting this to 0 disables RX descriptor prefetch.
+ * HTHRESH - MAC will only prefetch if there are at least this many descriptors
+ * available in host memory.
+ * If PTHRESH is 0, this should also be 0.
+ * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
+ * descriptors until either it has this many to write back, or the
+ * ITR timer expires.
+ */
+#define IGC_RX_PTHRESH 8
+#define IGC_RX_HTHRESH 8
+#define IGC_TX_PTHRESH 8
+#define IGC_TX_HTHRESH 1
+#define IGC_RX_WTHRESH 4
+#define IGC_TX_WTHRESH 16
+
+#define IGC_RX_DMA_ATTR \
+ (DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING)
+
+#define IGC_TS_HDR_LEN 16
+
+#define IGC_SKB_PAD (NET_SKB_PAD + NET_IP_ALIGN)
+
+#if (PAGE_SIZE < 8192)
+#define IGC_MAX_FRAME_BUILD_SKB \
+ (SKB_WITH_OVERHEAD(IGC_RXBUFFER_2048) - IGC_SKB_PAD - IGC_TS_HDR_LEN)
+#else
+#define IGC_MAX_FRAME_BUILD_SKB (IGC_RXBUFFER_2048 - IGC_TS_HDR_LEN)
+#endif
+
+/* How many Rx Buffers do we bundle into one write to the hardware ? */
+#define IGC_RX_BUFFER_WRITE 16 /* Must be power of 2 */
+
+/* VLAN info */
+#define IGC_TX_FLAGS_VLAN_MASK 0xffff0000
+
+/* igc_test_staterr - tests bits within Rx descriptor status and error fields */
+static inline __le32 igc_test_staterr(union igc_adv_rx_desc *rx_desc,
+ const u32 stat_err_bits)
+{
+ return rx_desc->wb.upper.status_error & cpu_to_le32(stat_err_bits);
+}
+
+enum igc_state_t {
+ __IGC_TESTING,
+ __IGC_RESETTING,
+ __IGC_DOWN,
+};
+
+enum igc_tx_flags {
+ /* cmd_type flags */
+ IGC_TX_FLAGS_VLAN = 0x01,
+ IGC_TX_FLAGS_TSO = 0x02,
+ IGC_TX_FLAGS_TSTAMP = 0x04,
+
+ /* olinfo flags */
+ IGC_TX_FLAGS_IPV4 = 0x10,
+ IGC_TX_FLAGS_CSUM = 0x20,
+};
+
+enum igc_boards {
+ board_base,
+};
+
+/* The largest size we can write to the descriptor is 65535. In order to
+ * maintain a power of two alignment we have to limit ourselves to 32K.
+ */
+#define IGC_MAX_TXD_PWR 15
+#define IGC_MAX_DATA_PER_TXD BIT(IGC_MAX_TXD_PWR)
+
+/* Tx Descriptors needed, worst case */
+#define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IGC_MAX_DATA_PER_TXD)
+#define DESC_NEEDED (MAX_SKB_FRAGS + 4)
+
+/* wrapper around a pointer to a socket buffer,
+ * so a DMA handle can be stored along with the buffer
+ */
+struct igc_tx_buffer {
+ union igc_adv_tx_desc *next_to_watch;
+ unsigned long time_stamp;
+ struct sk_buff *skb;
+ unsigned int bytecount;
+ u16 gso_segs;
+ __be16 protocol;
+
+ DEFINE_DMA_UNMAP_ADDR(dma);
+ DEFINE_DMA_UNMAP_LEN(len);
+ u32 tx_flags;
+};
+
+struct igc_rx_buffer {
+ dma_addr_t dma;
+ struct page *page;
+#if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536)
+ __u32 page_offset;
+#else
+ __u16 page_offset;
+#endif
+ __u16 pagecnt_bias;
+};
+
+struct igc_q_vector {
+ struct igc_adapter *adapter; /* backlink */
+ void __iomem *itr_register;
+ u32 eims_value; /* EIMS mask value */
+
+ u16 itr_val;
+ u8 set_itr;
+
+ struct igc_ring_container rx, tx;
+
+ struct napi_struct napi;
+
+ struct rcu_head rcu; /* to avoid race with update stats on free */
+ char name[IFNAMSIZ + 9];
+ struct net_device poll_dev;
+
+ /* for dynamic allocation of rings associated with this q_vector */
+ struct igc_ring ring[] ____cacheline_internodealigned_in_smp;
+};
+
+enum igc_filter_match_flags {
+ IGC_FILTER_FLAG_ETHER_TYPE = 0x1,
+ IGC_FILTER_FLAG_VLAN_TCI = 0x2,
+ IGC_FILTER_FLAG_SRC_MAC_ADDR = 0x4,
+ IGC_FILTER_FLAG_DST_MAC_ADDR = 0x8,
+};
+
+struct igc_nfc_filter {
+ u8 match_flags;
+ u16 etype;
+ u16 vlan_tci;
+ u8 src_addr[ETH_ALEN];
+ u8 dst_addr[ETH_ALEN];
+};
+
+struct igc_nfc_rule {
+ struct list_head list;
+ struct igc_nfc_filter filter;
+ u32 location;
+ u16 action;
+};
+
+/* IGC supports a total of 32 NFC rules: 16 MAC address based,, 8 VLAN priority
+ * based, and 8 ethertype based.
+ */
+#define IGC_MAX_RXNFC_RULES 32
+
+/* igc_desc_unused - calculate if we have unused descriptors */
+static inline u16 igc_desc_unused(const struct igc_ring *ring)
+{
+ u16 ntc = ring->next_to_clean;
+ u16 ntu = ring->next_to_use;
+
+ return ((ntc > ntu) ? 0 : ring->count) + ntc - ntu - 1;
+}
+
+static inline s32 igc_get_phy_info(struct igc_hw *hw)
+{
+ if (hw->phy.ops.get_phy_info)
+ return hw->phy.ops.get_phy_info(hw);
+
+ return 0;
+}
+
+static inline s32 igc_reset_phy(struct igc_hw *hw)
+{
+ if (hw->phy.ops.reset)
+ return hw->phy.ops.reset(hw);
+
+ return 0;
+}
+
+static inline struct netdev_queue *txring_txq(const struct igc_ring *tx_ring)
+{
+ return netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index);
+}
+
+enum igc_ring_flags_t {
+ IGC_RING_FLAG_RX_3K_BUFFER,
+ IGC_RING_FLAG_RX_BUILD_SKB_ENABLED,
+ IGC_RING_FLAG_RX_SCTP_CSUM,
+ IGC_RING_FLAG_RX_LB_VLAN_BSWAP,
+ IGC_RING_FLAG_TX_CTX_IDX,
+ IGC_RING_FLAG_TX_DETECT_HANG
+};
+
+#define ring_uses_large_buffer(ring) \
+ test_bit(IGC_RING_FLAG_RX_3K_BUFFER, &(ring)->flags)
+
+#define ring_uses_build_skb(ring) \
+ test_bit(IGC_RING_FLAG_RX_BUILD_SKB_ENABLED, &(ring)->flags)
+
+static inline unsigned int igc_rx_bufsz(struct igc_ring *ring)
+{
+#if (PAGE_SIZE < 8192)
+ if (ring_uses_large_buffer(ring))
+ return IGC_RXBUFFER_3072;
+
+ if (ring_uses_build_skb(ring))
+ return IGC_MAX_FRAME_BUILD_SKB + IGC_TS_HDR_LEN;
+#endif
+ return IGC_RXBUFFER_2048;
+}
+
+static inline unsigned int igc_rx_pg_order(struct igc_ring *ring)
+{
+#if (PAGE_SIZE < 8192)
+ if (ring_uses_large_buffer(ring))
+ return 1;
+#endif
+ return 0;
+}
+
+static inline s32 igc_read_phy_reg(struct igc_hw *hw, u32 offset, u16 *data)
+{
+ if (hw->phy.ops.read_reg)
+ return hw->phy.ops.read_reg(hw, offset, data);
+
+ return -EOPNOTSUPP;
+}
+
+void igc_reinit_locked(struct igc_adapter *);
+struct igc_nfc_rule *igc_get_nfc_rule(struct igc_adapter *adapter,
+ u32 location);
+int igc_add_nfc_rule(struct igc_adapter *adapter, struct igc_nfc_rule *rule);
+void igc_del_nfc_rule(struct igc_adapter *adapter, struct igc_nfc_rule *rule);
+
+void igc_ptp_init(struct igc_adapter *adapter);
+void igc_ptp_reset(struct igc_adapter *adapter);
+void igc_ptp_suspend(struct igc_adapter *adapter);
+void igc_ptp_stop(struct igc_adapter *adapter);
+void igc_ptp_rx_pktstamp(struct igc_q_vector *q_vector, __le32 *va,
+ struct sk_buff *skb);
+int igc_ptp_set_ts_config(struct net_device *netdev, struct ifreq *ifr);
+int igc_ptp_get_ts_config(struct net_device *netdev, struct ifreq *ifr);
+void igc_ptp_tx_hang(struct igc_adapter *adapter);
+void igc_ptp_read(struct igc_adapter *adapter, struct timespec64 *ts);
+
+#define igc_rx_pg_size(_ring) (PAGE_SIZE << igc_rx_pg_order(_ring))
+
+#define IGC_TXD_DCMD (IGC_ADVTXD_DCMD_EOP | IGC_ADVTXD_DCMD_RS)
+
+#define IGC_RX_DESC(R, i) \
+ (&(((union igc_adv_rx_desc *)((R)->desc))[i]))
+#define IGC_TX_DESC(R, i) \
+ (&(((union igc_adv_tx_desc *)((R)->desc))[i]))
+#define IGC_TX_CTXTDESC(R, i) \
+ (&(((struct igc_adv_tx_context_desc *)((R)->desc))[i]))
+
+#endif /* _IGC_H_ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 03:57:12 +0000