drivers/net/ethernet/sfc/nic.h

   1 /****************************************************************************
   2  * Driver for Solarflare network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2013 Solarflare Communications Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #ifndef EFX_NIC_H
  12 #define EFX_NIC_H
  13
  14 #include <linux/net_tstamp.h>
  15 #include <linux/i2c-algo-bit.h>
  16 #include "net_driver.h"
  17 #include "efx.h"
  18 #include "mcdi.h"
  19
  20 enum {
  21         EFX_REV_FALCON_A0 = 0,
  22         EFX_REV_FALCON_A1 = 1,
  23         EFX_REV_FALCON_B0 = 2,
  24         EFX_REV_SIENA_A0 = 3,
  25         EFX_REV_HUNT_A0 = 4,
  26 };
  27
  28 static inline int efx_nic_rev(struct efx_nic *efx)
  29 {
  30         return efx->type->revision;
  31 }
  32
  33 u32 efx_farch_fpga_ver(struct efx_nic *efx);
  34
  35 /* NIC has two interlinked PCI functions for the same port. */
  36 static inline bool efx_nic_is_dual_func(struct efx_nic *efx)
  37 {
  38         return efx_nic_rev(efx) < EFX_REV_FALCON_B0;
  39 }
  40
  41 /* Read the current event from the event queue */
  42 static inline efx_qword_t *efx_event(struct efx_channel *channel,
  43                                      unsigned int index)
  44 {
  45         return ((efx_qword_t *) (channel->eventq.buf.addr)) +
  46                 (index & channel->eventq_mask);
  47 }
  48
  49 /* See if an event is present
  50  *
  51  * We check both the high and low dword of the event for all ones.  We
  52  * wrote all ones when we cleared the event, and no valid event can
  53  * have all ones in either its high or low dwords.  This approach is
  54  * robust against reordering.
  55  *
  56  * Note that using a single 64-bit comparison is incorrect; even
  57  * though the CPU read will be atomic, the DMA write may not be.
  58  */
  59 static inline int efx_event_present(efx_qword_t *event)
  60 {
  61         return !(EFX_DWORD_IS_ALL_ONES(event->dword[0]) |
  62                   EFX_DWORD_IS_ALL_ONES(event->dword[1]));
  63 }
  64
  65 /* Returns a pointer to the specified transmit descriptor in the TX
  66  * descriptor queue belonging to the specified channel.
  67  */
  68 static inline efx_qword_t *
  69 efx_tx_desc(struct efx_tx_queue *tx_queue, unsigned int index)
  70 {
  71         return ((efx_qword_t *) (tx_queue->txd.buf.addr)) + index;
  72 }
  73
  74 /* Get partner of a TX queue, seen as part of the same net core queue */
  75 static struct efx_tx_queue *efx_tx_queue_partner(struct efx_tx_queue *tx_queue)
  76 {
  77         if (tx_queue->queue & EFX_TXQ_TYPE_OFFLOAD)
  78                 return tx_queue - EFX_TXQ_TYPE_OFFLOAD;
  79         else
  80                 return tx_queue + EFX_TXQ_TYPE_OFFLOAD;
  81 }
  82
  83 /* Report whether this TX queue would be empty for the given write_count.
  84  * May return false negative.
  85  */
  86 static inline bool __efx_nic_tx_is_empty(struct efx_tx_queue *tx_queue,
  87                                          unsigned int write_count)
  88 {
  89         unsigned int empty_read_count = ACCESS_ONCE(tx_queue->empty_read_count);
  90
  91         if (empty_read_count == 0)
  92                 return false;
  93
  94         return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0;
  95 }
  96
  97 /* Decide whether we can use TX PIO, ie. write packet data directly into
  98  * a buffer on the device.  This can reduce latency at the expense of
  99  * throughput, so we only do this if both hardware and software TX rings
 100  * are empty.  This also ensures that only one packet at a time can be
 101  * using the PIO buffer.
 102  */
 103 static inline bool efx_nic_may_tx_pio(struct efx_tx_queue *tx_queue)
 104 {
 105         struct efx_tx_queue *partner = efx_tx_queue_partner(tx_queue);
 106         return tx_queue->piobuf &&
 107                __efx_nic_tx_is_empty(tx_queue, tx_queue->insert_count) &&
 108                __efx_nic_tx_is_empty(partner, partner->insert_count);
 109 }
 110
 111 /* Decide whether to push a TX descriptor to the NIC vs merely writing
 112  * the doorbell.  This can reduce latency when we are adding a single
 113  * descriptor to an empty queue, but is otherwise pointless.  Further,
 114  * Falcon and Siena have hardware bugs (SF bug 33851) that may be
 115  * triggered if we don't check this.
 116  * We use the write_count used for the last doorbell push, to get the
 117  * NIC's view of the tx queue.
 118  */
 119 static inline bool efx_nic_may_push_tx_desc(struct efx_tx_queue *tx_queue,
 120                                             unsigned int write_count)
 121 {
 122         bool was_empty = __efx_nic_tx_is_empty(tx_queue, write_count);
 123
 124         tx_queue->empty_read_count = 0;
 125         return was_empty && tx_queue->write_count - write_count == 1;
 126 }
 127
 128 /* Returns a pointer to the specified descriptor in the RX descriptor queue */
 129 static inline efx_qword_t *
 130 efx_rx_desc(struct efx_rx_queue *rx_queue, unsigned int index)
 131 {
 132         return ((efx_qword_t *) (rx_queue->rxd.buf.addr)) + index;
 133 }
 134
 135 enum {
 136         PHY_TYPE_NONE = 0,
 137         PHY_TYPE_TXC43128 = 1,
 138         PHY_TYPE_88E1111 = 2,
 139         PHY_TYPE_SFX7101 = 3,
 140         PHY_TYPE_QT2022C2 = 4,
 141         PHY_TYPE_PM8358 = 6,
 142         PHY_TYPE_SFT9001A = 8,
 143         PHY_TYPE_QT2025C = 9,
 144         PHY_TYPE_SFT9001B = 10,
 145 };
 146
 147 #define FALCON_XMAC_LOOPBACKS                   \
 148         ((1 << LOOPBACK_XGMII) |                \
 149          (1 << LOOPBACK_XGXS) |                 \
 150          (1 << LOOPBACK_XAUI))
 151
 152 /* Alignment of PCIe DMA boundaries (4KB) */
 153 #define EFX_PAGE_SIZE   4096
 154 /* Size and alignment of buffer table entries (same) */
 155 #define EFX_BUF_SIZE    EFX_PAGE_SIZE
 156
 157 /* NIC-generic software stats */
 158 enum {
 159         GENERIC_STAT_rx_noskb_drops,
 160         GENERIC_STAT_rx_nodesc_trunc,
 161         GENERIC_STAT_COUNT
 162 };
 163
 164 /**
 165  * struct falcon_board_type - board operations and type information
 166  * @id: Board type id, as found in NVRAM
 167  * @init: Allocate resources and initialise peripheral hardware
 168  * @init_phy: Do board-specific PHY initialisation
 169  * @fini: Shut down hardware and free resources
 170  * @set_id_led: Set state of identifying LED or revert to automatic function
 171  * @monitor: Board-specific health check function
 172  */
 173 struct falcon_board_type {
 174         u8 id;
 175         int (*init) (struct efx_nic *nic);
 176         void (*init_phy) (struct efx_nic *efx);
 177         void (*fini) (struct efx_nic *nic);
 178         void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
 179         int (*monitor) (struct efx_nic *nic);
 180 };
 181
 182 /**
 183  * struct falcon_board - board information
 184  * @type: Type of board
 185  * @major: Major rev. ('A', 'B' ...)
 186  * @minor: Minor rev. (0, 1, ...)
 187  * @i2c_adap: I2C adapter for on-board peripherals
 188  * @i2c_data: Data for bit-banging algorithm
 189  * @hwmon_client: I2C client for hardware monitor
 190  * @ioexp_client: I2C client for power/port control
 191  */
 192 struct falcon_board {
 193         const struct falcon_board_type *type;
 194         int major;
 195         int minor;
 196         struct i2c_adapter i2c_adap;
 197         struct i2c_algo_bit_data i2c_data;
 198         struct i2c_client *hwmon_client, *ioexp_client;
 199 };
 200
 201 /**
 202  * struct falcon_spi_device - a Falcon SPI (Serial Peripheral Interface) device
 203  * @device_id:          Controller's id for the device
 204  * @size:               Size (in bytes)
 205  * @addr_len:           Number of address bytes in read/write commands
 206  * @munge_address:      Flag whether addresses should be munged.
 207  *      Some devices with 9-bit addresses (e.g. AT25040A EEPROM)
 208  *      use bit 3 of the command byte as address bit A8, rather
 209  *      than having a two-byte address.  If this flag is set, then
 210  *      commands should be munged in this way.
 211  * @erase_command:      Erase command (or 0 if sector erase not needed).
 212  * @erase_size:         Erase sector size (in bytes)
 213  *      Erase commands affect sectors with this size and alignment.
 214  *      This must be a power of two.
 215  * @block_size:         Write block size (in bytes).
 216  *      Write commands are limited to blocks with this size and alignment.
 217  */
 218 struct falcon_spi_device {
 219         int device_id;
 220         unsigned int size;
 221         unsigned int addr_len;
 222         unsigned int munge_address:1;
 223         u8 erase_command;
 224         unsigned int erase_size;
 225         unsigned int block_size;
 226 };
 227
 228 static inline bool falcon_spi_present(const struct falcon_spi_device *spi)
 229 {
 230         return spi->size != 0;
 231 }
 232
 233 enum {
 234         FALCON_STAT_tx_bytes = GENERIC_STAT_COUNT,
 235         FALCON_STAT_tx_packets,
 236         FALCON_STAT_tx_pause,
 237         FALCON_STAT_tx_control,
 238         FALCON_STAT_tx_unicast,
 239         FALCON_STAT_tx_multicast,
 240         FALCON_STAT_tx_broadcast,
 241         FALCON_STAT_tx_lt64,
 242         FALCON_STAT_tx_64,
 243         FALCON_STAT_tx_65_to_127,
 244         FALCON_STAT_tx_128_to_255,
 245         FALCON_STAT_tx_256_to_511,
 246         FALCON_STAT_tx_512_to_1023,
 247         FALCON_STAT_tx_1024_to_15xx,
 248         FALCON_STAT_tx_15xx_to_jumbo,
 249         FALCON_STAT_tx_gtjumbo,
 250         FALCON_STAT_tx_non_tcpudp,
 251         FALCON_STAT_tx_mac_src_error,
 252         FALCON_STAT_tx_ip_src_error,
 253         FALCON_STAT_rx_bytes,
 254         FALCON_STAT_rx_good_bytes,
 255         FALCON_STAT_rx_bad_bytes,
 256         FALCON_STAT_rx_packets,
 257         FALCON_STAT_rx_good,
 258         FALCON_STAT_rx_bad,
 259         FALCON_STAT_rx_pause,
 260         FALCON_STAT_rx_control,
 261         FALCON_STAT_rx_unicast,
 262         FALCON_STAT_rx_multicast,
 263         FALCON_STAT_rx_broadcast,
 264         FALCON_STAT_rx_lt64,
 265         FALCON_STAT_rx_64,
 266         FALCON_STAT_rx_65_to_127,
 267         FALCON_STAT_rx_128_to_255,
 268         FALCON_STAT_rx_256_to_511,
 269         FALCON_STAT_rx_512_to_1023,
 270         FALCON_STAT_rx_1024_to_15xx,
 271         FALCON_STAT_rx_15xx_to_jumbo,
 272         FALCON_STAT_rx_gtjumbo,
 273         FALCON_STAT_rx_bad_lt64,
 274         FALCON_STAT_rx_bad_gtjumbo,
 275         FALCON_STAT_rx_overflow,
 276         FALCON_STAT_rx_symbol_error,
 277         FALCON_STAT_rx_align_error,
 278         FALCON_STAT_rx_length_error,
 279         FALCON_STAT_rx_internal_error,
 280         FALCON_STAT_rx_nodesc_drop_cnt,
 281         FALCON_STAT_COUNT
 282 };
 283
 284 /**
 285  * struct falcon_nic_data - Falcon NIC state
 286  * @pci_dev2: Secondary function of Falcon A
 287  * @board: Board state and functions
 288  * @stats: Hardware statistics
 289  * @stats_disable_count: Nest count for disabling statistics fetches
 290  * @stats_pending: Is there a pending DMA of MAC statistics.
 291  * @stats_timer: A timer for regularly fetching MAC statistics.
 292  * @spi_flash: SPI flash device
 293  * @spi_eeprom: SPI EEPROM device
 294  * @spi_lock: SPI bus lock
 295  * @mdio_lock: MDIO bus lock
 296  * @xmac_poll_required: XMAC link state needs polling
 297  */
 298 struct falcon_nic_data {
 299         struct pci_dev *pci_dev2;
 300         struct falcon_board board;
 301         u64 stats[FALCON_STAT_COUNT];
 302         unsigned int stats_disable_count;
 303         bool stats_pending;
 304         struct timer_list stats_timer;
 305         struct falcon_spi_device spi_flash;
 306         struct falcon_spi_device spi_eeprom;
 307         struct mutex spi_lock;
 308         struct mutex mdio_lock;
 309         bool xmac_poll_required;
 310 };
 311
 312 static inline struct falcon_board *falcon_board(struct efx_nic *efx)
 313 {
 314         struct falcon_nic_data *data = efx->nic_data;
 315         return &data->board;
 316 }
 317
 318 enum {
 319         SIENA_STAT_tx_bytes = GENERIC_STAT_COUNT,
 320         SIENA_STAT_tx_good_bytes,
 321         SIENA_STAT_tx_bad_bytes,
 322         SIENA_STAT_tx_packets,
 323         SIENA_STAT_tx_bad,
 324         SIENA_STAT_tx_pause,
 325         SIENA_STAT_tx_control,
 326         SIENA_STAT_tx_unicast,
 327         SIENA_STAT_tx_multicast,
 328         SIENA_STAT_tx_broadcast,
 329         SIENA_STAT_tx_lt64,
 330         SIENA_STAT_tx_64,
 331         SIENA_STAT_tx_65_to_127,
 332         SIENA_STAT_tx_128_to_255,
 333         SIENA_STAT_tx_256_to_511,
 334         SIENA_STAT_tx_512_to_1023,
 335         SIENA_STAT_tx_1024_to_15xx,
 336         SIENA_STAT_tx_15xx_to_jumbo,
 337         SIENA_STAT_tx_gtjumbo,
 338         SIENA_STAT_tx_collision,
 339         SIENA_STAT_tx_single_collision,
 340         SIENA_STAT_tx_multiple_collision,
 341         SIENA_STAT_tx_excessive_collision,
 342         SIENA_STAT_tx_deferred,
 343         SIENA_STAT_tx_late_collision,
 344         SIENA_STAT_tx_excessive_deferred,
 345         SIENA_STAT_tx_non_tcpudp,
 346         SIENA_STAT_tx_mac_src_error,
 347         SIENA_STAT_tx_ip_src_error,
 348         SIENA_STAT_rx_bytes,
 349         SIENA_STAT_rx_good_bytes,
 350         SIENA_STAT_rx_bad_bytes,
 351         SIENA_STAT_rx_packets,
 352         SIENA_STAT_rx_good,
 353         SIENA_STAT_rx_bad,
 354         SIENA_STAT_rx_pause,
 355         SIENA_STAT_rx_control,
 356         SIENA_STAT_rx_unicast,
 357         SIENA_STAT_rx_multicast,
 358         SIENA_STAT_rx_broadcast,
 359         SIENA_STAT_rx_lt64,
 360         SIENA_STAT_rx_64,
 361         SIENA_STAT_rx_65_to_127,
 362         SIENA_STAT_rx_128_to_255,
 363         SIENA_STAT_rx_256_to_511,
 364         SIENA_STAT_rx_512_to_1023,
 365         SIENA_STAT_rx_1024_to_15xx,
 366         SIENA_STAT_rx_15xx_to_jumbo,
 367         SIENA_STAT_rx_gtjumbo,
 368         SIENA_STAT_rx_bad_gtjumbo,
 369         SIENA_STAT_rx_overflow,
 370         SIENA_STAT_rx_false_carrier,
 371         SIENA_STAT_rx_symbol_error,
 372         SIENA_STAT_rx_align_error,
 373         SIENA_STAT_rx_length_error,
 374         SIENA_STAT_rx_internal_error,
 375         SIENA_STAT_rx_nodesc_drop_cnt,
 376         SIENA_STAT_COUNT
 377 };
 378
 379 /**
 380  * struct siena_nic_data - Siena NIC state
 381  * @efx: Pointer back to main interface structure
 382  * @wol_filter_id: Wake-on-LAN packet filter id
 383  * @stats: Hardware statistics
 384  * @vf: Array of &struct siena_vf objects
 385  * @vf_buftbl_base: The zeroth buffer table index used to back VF queues.
 386  * @vfdi_status: Common VFDI status page to be dmad to VF address space.
 387  * @local_addr_list: List of local addresses. Protected by %local_lock.
 388  * @local_page_list: List of DMA addressable pages used to broadcast
 389  *      %local_addr_list. Protected by %local_lock.
 390  * @local_lock: Mutex protecting %local_addr_list and %local_page_list.
 391  * @peer_work: Work item to broadcast peer addresses to VMs.
 392  */
 393 struct siena_nic_data {
 394         struct efx_nic *efx;
 395         int wol_filter_id;
 396         u64 stats[SIENA_STAT_COUNT];
 397 #ifdef CONFIG_SFC_SRIOV
 398         struct siena_vf *vf;
 399         struct efx_channel *vfdi_channel;
 400         unsigned vf_buftbl_base;
 401         struct efx_buffer vfdi_status;
 402         struct list_head local_addr_list;
 403         struct list_head local_page_list;
 404         struct mutex local_lock;
 405         struct work_struct peer_work;
 406 #endif
 407 };
 408
 409 enum {
 410         EF10_STAT_port_tx_bytes = GENERIC_STAT_COUNT,
 411         EF10_STAT_port_tx_packets,
 412         EF10_STAT_port_tx_pause,
 413         EF10_STAT_port_tx_control,
 414         EF10_STAT_port_tx_unicast,
 415         EF10_STAT_port_tx_multicast,
 416         EF10_STAT_port_tx_broadcast,
 417         EF10_STAT_port_tx_lt64,
 418         EF10_STAT_port_tx_64,
 419         EF10_STAT_port_tx_65_to_127,
 420         EF10_STAT_port_tx_128_to_255,
 421         EF10_STAT_port_tx_256_to_511,
 422         EF10_STAT_port_tx_512_to_1023,
 423         EF10_STAT_port_tx_1024_to_15xx,
 424         EF10_STAT_port_tx_15xx_to_jumbo,
 425         EF10_STAT_port_rx_bytes,
 426         EF10_STAT_port_rx_bytes_minus_good_bytes,
 427         EF10_STAT_port_rx_good_bytes,
 428         EF10_STAT_port_rx_bad_bytes,
 429         EF10_STAT_port_rx_packets,
 430         EF10_STAT_port_rx_good,
 431         EF10_STAT_port_rx_bad,
 432         EF10_STAT_port_rx_pause,
 433         EF10_STAT_port_rx_control,
 434         EF10_STAT_port_rx_unicast,
 435         EF10_STAT_port_rx_multicast,
 436         EF10_STAT_port_rx_broadcast,
 437         EF10_STAT_port_rx_lt64,
 438         EF10_STAT_port_rx_64,
 439         EF10_STAT_port_rx_65_to_127,
 440         EF10_STAT_port_rx_128_to_255,
 441         EF10_STAT_port_rx_256_to_511,
 442         EF10_STAT_port_rx_512_to_1023,
 443         EF10_STAT_port_rx_1024_to_15xx,
 444         EF10_STAT_port_rx_15xx_to_jumbo,
 445         EF10_STAT_port_rx_gtjumbo,
 446         EF10_STAT_port_rx_bad_gtjumbo,
 447         EF10_STAT_port_rx_overflow,
 448         EF10_STAT_port_rx_align_error,
 449         EF10_STAT_port_rx_length_error,
 450         EF10_STAT_port_rx_nodesc_drops,
 451         EF10_STAT_port_rx_pm_trunc_bb_overflow,
 452         EF10_STAT_port_rx_pm_discard_bb_overflow,
 453         EF10_STAT_port_rx_pm_trunc_vfifo_full,
 454         EF10_STAT_port_rx_pm_discard_vfifo_full,
 455         EF10_STAT_port_rx_pm_trunc_qbb,
 456         EF10_STAT_port_rx_pm_discard_qbb,
 457         EF10_STAT_port_rx_pm_discard_mapping,
 458         EF10_STAT_port_rx_dp_q_disabled_packets,
 459         EF10_STAT_port_rx_dp_di_dropped_packets,
 460         EF10_STAT_port_rx_dp_streaming_packets,
 461         EF10_STAT_port_rx_dp_hlb_fetch,
 462         EF10_STAT_port_rx_dp_hlb_wait,
 463         EF10_STAT_rx_unicast,
 464         EF10_STAT_rx_unicast_bytes,
 465         EF10_STAT_rx_multicast,
 466         EF10_STAT_rx_multicast_bytes,
 467         EF10_STAT_rx_broadcast,
 468         EF10_STAT_rx_broadcast_bytes,
 469         EF10_STAT_rx_bad,
 470         EF10_STAT_rx_bad_bytes,
 471         EF10_STAT_rx_overflow,
 472         EF10_STAT_tx_unicast,
 473         EF10_STAT_tx_unicast_bytes,
 474         EF10_STAT_tx_multicast,
 475         EF10_STAT_tx_multicast_bytes,
 476         EF10_STAT_tx_broadcast,
 477         EF10_STAT_tx_broadcast_bytes,
 478         EF10_STAT_tx_bad,
 479         EF10_STAT_tx_bad_bytes,
 480         EF10_STAT_tx_overflow,
 481         EF10_STAT_COUNT
 482 };
 483
 484 /* Maximum number of TX PIO buffers we may allocate to a function.
 485  * This matches the total number of buffers on each SFC9100-family
 486  * controller.
 487  */
 488 #define EF10_TX_PIOBUF_COUNT 16
 489
 490 /**
 491  * struct efx_ef10_nic_data - EF10 architecture NIC state
 492  * @mcdi_buf: DMA buffer for MCDI
 493  * @warm_boot_count: Last seen MC warm boot count
 494  * @vi_base: Absolute index of first VI in this function
 495  * @n_allocated_vis: Number of VIs allocated to this function
 496  * @must_realloc_vis: Flag: VIs have yet to be reallocated after MC reboot
 497  * @must_restore_filters: Flag: filters have yet to be restored after MC reboot
 498  * @n_piobufs: Number of PIO buffers allocated to this function
 499  * @wc_membase: Base address of write-combining mapping of the memory BAR
 500  * @pio_write_base: Base address for writing PIO buffers
 501  * @pio_write_vi_base: Relative VI number for @pio_write_base
 502  * @piobuf_handle: Handle of each PIO buffer allocated
 503  * @must_restore_piobufs: Flag: PIO buffers have yet to be restored after MC
 504  *      reboot
 505  * @rx_rss_context: Firmware handle for our RSS context
 506  * @rx_rss_context_exclusive: Whether our RSS context is exclusive or shared
 507  * @stats: Hardware statistics
 508  * @workaround_35388: Flag: firmware supports workaround for bug 35388
 509  * @workaround_26807: Flag: firmware supports workaround for bug 26807
 510  * @must_check_datapath_caps: Flag: @datapath_caps needs to be revalidated
 511  *      after MC reboot
 512  * @datapath_caps: Capabilities of datapath firmware (FLAGS1 field of
 513  *      %MC_CMD_GET_CAPABILITIES response)
 514  * @rx_dpcpu_fw_id: Firmware ID of the RxDPCPU
 515  * @tx_dpcpu_fw_id: Firmware ID of the TxDPCPU
 516  * @vport_id: The function's vport ID, only relevant for PFs
 517  * @must_probe_vswitching: Flag: vswitching has yet to be setup after MC reboot
 518  * @pf_index: The number for this PF, or the parent PF if this is a VF
 519 #ifdef CONFIG_SFC_SRIOV
 520  * @vf: Pointer to VF data structure
 521 #endif
 522  * @vport_mac: The MAC address on the vport, only for PFs; VFs will be zero
 523  * @vlan_list: List of VLANs added over the interface. Serialised by vlan_lock.
 524  * @vlan_lock: Lock to serialize access to vlan_list.
 525  */
 526 struct efx_ef10_nic_data {
 527         struct efx_buffer mcdi_buf;
 528         u16 warm_boot_count;
 529         unsigned int vi_base;
 530         unsigned int n_allocated_vis;
 531         bool must_realloc_vis;
 532         bool must_restore_filters;
 533         unsigned int n_piobufs;
 534         void __iomem *wc_membase, *pio_write_base;
 535         unsigned int pio_write_vi_base;
 536         unsigned int piobuf_handle[EF10_TX_PIOBUF_COUNT];
 537         bool must_restore_piobufs;
 538         u32 rx_rss_context;
 539         bool rx_rss_context_exclusive;
 540         u64 stats[EF10_STAT_COUNT];
 541         bool workaround_35388;
 542         bool workaround_26807;
 543         bool must_check_datapath_caps;
 544         u32 datapath_caps;
 545         unsigned int rx_dpcpu_fw_id;
 546         unsigned int tx_dpcpu_fw_id;
 547         unsigned int vport_id;
 548         bool must_probe_vswitching;
 549         unsigned int pf_index;
 550         u8 port_id[ETH_ALEN];
 551 #ifdef CONFIG_SFC_SRIOV
 552         unsigned int vf_index;
 553         struct ef10_vf *vf;
 554 #endif
 555         u8 vport_mac[ETH_ALEN];
 556         struct list_head vlan_list;
 557         struct mutex vlan_lock;
 558 };
 559
 560 int efx_init_sriov(void);
 561 void efx_fini_sriov(void);
 562
 563 struct ethtool_ts_info;
 564 int efx_ptp_probe(struct efx_nic *efx, struct efx_channel *channel);
 565 void efx_ptp_defer_probe_with_channel(struct efx_nic *efx);
 566 void efx_ptp_remove(struct efx_nic *efx);
 567 int efx_ptp_set_ts_config(struct efx_nic *efx, struct ifreq *ifr);
 568 int efx_ptp_get_ts_config(struct efx_nic *efx, struct ifreq *ifr);
 569 void efx_ptp_get_ts_info(struct efx_nic *efx, struct ethtool_ts_info *ts_info);
 570 bool efx_ptp_is_ptp_tx(struct efx_nic *efx, struct sk_buff *skb);
 571 int efx_ptp_get_mode(struct efx_nic *efx);
 572 int efx_ptp_change_mode(struct efx_nic *efx, bool enable_wanted,
 573                         unsigned int new_mode);
 574 int efx_ptp_tx(struct efx_nic *efx, struct sk_buff *skb);
 575 void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev);
 576 size_t efx_ptp_describe_stats(struct efx_nic *efx, u8 *strings);
 577 size_t efx_ptp_update_stats(struct efx_nic *efx, u64 *stats);
 578 void efx_time_sync_event(struct efx_channel *channel, efx_qword_t *ev);
 579 void __efx_rx_skb_attach_timestamp(struct efx_channel *channel,
 580                                    struct sk_buff *skb);
 581 static inline void efx_rx_skb_attach_timestamp(struct efx_channel *channel,
 582                                                struct sk_buff *skb)
 583 {
 584         if (channel->sync_events_state == SYNC_EVENTS_VALID)
 585                 __efx_rx_skb_attach_timestamp(channel, skb);
 586 }
 587 void efx_ptp_start_datapath(struct efx_nic *efx);
 588 void efx_ptp_stop_datapath(struct efx_nic *efx);
 589
 590 extern const struct efx_nic_type falcon_a1_nic_type;
 591 extern const struct efx_nic_type falcon_b0_nic_type;
 592 extern const struct efx_nic_type siena_a0_nic_type;
 593 extern const struct efx_nic_type efx_hunt_a0_nic_type;
 594 extern const struct efx_nic_type efx_hunt_a0_vf_nic_type;
 595
 596 /**************************************************************************
 597  *
 598  * Externs
 599  *
 600  **************************************************************************
 601  */
 602
 603 int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
 604
 605 /* TX data path */
 606 static inline int efx_nic_probe_tx(struct efx_tx_queue *tx_queue)
 607 {
 608         return tx_queue->efx->type->tx_probe(tx_queue);
 609 }
 610 static inline void efx_nic_init_tx(struct efx_tx_queue *tx_queue)
 611 {
 612         tx_queue->efx->type->tx_init(tx_queue);
 613 }
 614 static inline void efx_nic_remove_tx(struct efx_tx_queue *tx_queue)
 615 {
 616         tx_queue->efx->type->tx_remove(tx_queue);
 617 }
 618 static inline void efx_nic_push_buffers(struct efx_tx_queue *tx_queue)
 619 {
 620         tx_queue->efx->type->tx_write(tx_queue);
 621 }
 622
 623 /* RX data path */
 624 static inline int efx_nic_probe_rx(struct efx_rx_queue *rx_queue)
 625 {
 626         return rx_queue->efx->type->rx_probe(rx_queue);
 627 }
 628 static inline void efx_nic_init_rx(struct efx_rx_queue *rx_queue)
 629 {
 630         rx_queue->efx->type->rx_init(rx_queue);
 631 }
 632 static inline void efx_nic_remove_rx(struct efx_rx_queue *rx_queue)
 633 {
 634         rx_queue->efx->type->rx_remove(rx_queue);
 635 }
 636 static inline void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue)
 637 {
 638         rx_queue->efx->type->rx_write(rx_queue);
 639 }
 640 static inline void efx_nic_generate_fill_event(struct efx_rx_queue *rx_queue)
 641 {
 642         rx_queue->efx->type->rx_defer_refill(rx_queue);
 643 }
 644
 645 /* Event data path */
 646 static inline int efx_nic_probe_eventq(struct efx_channel *channel)
 647 {
 648         return channel->efx->type->ev_probe(channel);
 649 }
 650 static inline int efx_nic_init_eventq(struct efx_channel *channel)
 651 {
 652         return channel->efx->type->ev_init(channel);
 653 }
 654 static inline void efx_nic_fini_eventq(struct efx_channel *channel)
 655 {
 656         channel->efx->type->ev_fini(channel);
 657 }
 658 static inline void efx_nic_remove_eventq(struct efx_channel *channel)
 659 {
 660         channel->efx->type->ev_remove(channel);
 661 }
 662 static inline int
 663 efx_nic_process_eventq(struct efx_channel *channel, int quota)
 664 {
 665         return channel->efx->type->ev_process(channel, quota);
 666 }
 667 static inline void efx_nic_eventq_read_ack(struct efx_channel *channel)
 668 {
 669         channel->efx->type->ev_read_ack(channel);
 670 }
 671 void efx_nic_event_test_start(struct efx_channel *channel);
 672
 673 /* Falcon/Siena queue operations */
 674 int efx_farch_tx_probe(struct efx_tx_queue *tx_queue);
 675 void efx_farch_tx_init(struct efx_tx_queue *tx_queue);
 676 void efx_farch_tx_fini(struct efx_tx_queue *tx_queue);
 677 void efx_farch_tx_remove(struct efx_tx_queue *tx_queue);
 678 void efx_farch_tx_write(struct efx_tx_queue *tx_queue);
 679 int efx_farch_rx_probe(struct efx_rx_queue *rx_queue);
 680 void efx_farch_rx_init(struct efx_rx_queue *rx_queue);
 681 void efx_farch_rx_fini(struct efx_rx_queue *rx_queue);
 682 void efx_farch_rx_remove(struct efx_rx_queue *rx_queue);
 683 void efx_farch_rx_write(struct efx_rx_queue *rx_queue);
 684 void efx_farch_rx_defer_refill(struct efx_rx_queue *rx_queue);
 685 int efx_farch_ev_probe(struct efx_channel *channel);
 686 int efx_farch_ev_init(struct efx_channel *channel);
 687 void efx_farch_ev_fini(struct efx_channel *channel);
 688 void efx_farch_ev_remove(struct efx_channel *channel);
 689 int efx_farch_ev_process(struct efx_channel *channel, int quota);
 690 void efx_farch_ev_read_ack(struct efx_channel *channel);
 691 void efx_farch_ev_test_generate(struct efx_channel *channel);
 692
 693 /* Falcon/Siena filter operations */
 694 int efx_farch_filter_table_probe(struct efx_nic *efx);
 695 void efx_farch_filter_table_restore(struct efx_nic *efx);
 696 void efx_farch_filter_table_remove(struct efx_nic *efx);
 697 void efx_farch_filter_update_rx_scatter(struct efx_nic *efx);
 698 s32 efx_farch_filter_insert(struct efx_nic *efx, struct efx_filter_spec *spec,
 699                             bool replace);
 700 int efx_farch_filter_remove_safe(struct efx_nic *efx,
 701                                  enum efx_filter_priority priority,
 702                                  u32 filter_id);
 703 int efx_farch_filter_get_safe(struct efx_nic *efx,
 704                               enum efx_filter_priority priority, u32 filter_id,
 705                               struct efx_filter_spec *);
 706 int efx_farch_filter_clear_rx(struct efx_nic *efx,
 707                               enum efx_filter_priority priority);
 708 u32 efx_farch_filter_count_rx_used(struct efx_nic *efx,
 709                                    enum efx_filter_priority priority);
 710 u32 efx_farch_filter_get_rx_id_limit(struct efx_nic *efx);
 711 s32 efx_farch_filter_get_rx_ids(struct efx_nic *efx,
 712                                 enum efx_filter_priority priority, u32 *buf,
 713                                 u32 size);
 714 #ifdef CONFIG_RFS_ACCEL
 715 s32 efx_farch_filter_rfs_insert(struct efx_nic *efx,
 716                                 struct efx_filter_spec *spec);
 717 bool efx_farch_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id,
 718                                      unsigned int index);
 719 #endif
 720 void efx_farch_filter_sync_rx_mode(struct efx_nic *efx);
 721
 722 bool efx_nic_event_present(struct efx_channel *channel);
 723
 724 /* Some statistics are computed as A - B where A and B each increase
 725  * linearly with some hardware counter(s) and the counters are read
 726  * asynchronously.  If the counters contributing to B are always read
 727  * after those contributing to A, the computed value may be lower than
 728  * the true value by some variable amount, and may decrease between
 729  * subsequent computations.
 730  *
 731  * We should never allow statistics to decrease or to exceed the true
 732  * value.  Since the computed value will never be greater than the
 733  * true value, we can achieve this by only storing the computed value
 734  * when it increases.
 735  */
 736 static inline void efx_update_diff_stat(u64 *stat, u64 diff)
 737 {
 738         if ((s64)(diff - *stat) > 0)
 739                 *stat = diff;
 740 }
 741
 742 /* Interrupts */
 743 int efx_nic_init_interrupt(struct efx_nic *efx);
 744 void efx_nic_irq_test_start(struct efx_nic *efx);
 745 void efx_nic_fini_interrupt(struct efx_nic *efx);
 746
 747 /* Falcon/Siena interrupts */
 748 void efx_farch_irq_enable_master(struct efx_nic *efx);
 749 void efx_farch_irq_test_generate(struct efx_nic *efx);
 750 void efx_farch_irq_disable_master(struct efx_nic *efx);
 751 irqreturn_t efx_farch_msi_interrupt(int irq, void *dev_id);
 752 irqreturn_t efx_farch_legacy_interrupt(int irq, void *dev_id);
 753 irqreturn_t efx_farch_fatal_interrupt(struct efx_nic *efx);
 754
 755 static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel)
 756 {
 757         return ACCESS_ONCE(channel->event_test_cpu);
 758 }
 759 static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx)
 760 {
 761         return ACCESS_ONCE(efx->last_irq_cpu);
 762 }
 763
 764 /* Global Resources */
 765 int efx_nic_flush_queues(struct efx_nic *efx);
 766 void siena_prepare_flush(struct efx_nic *efx);
 767 int efx_farch_fini_dmaq(struct efx_nic *efx);
 768 void efx_farch_finish_flr(struct efx_nic *efx);
 769 void siena_finish_flush(struct efx_nic *efx);
 770 void falcon_start_nic_stats(struct efx_nic *efx);
 771 void falcon_stop_nic_stats(struct efx_nic *efx);
 772 int falcon_reset_xaui(struct efx_nic *efx);
 773 void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw);
 774 void efx_farch_init_common(struct efx_nic *efx);
 775 void efx_ef10_handle_drain_event(struct efx_nic *efx);
 776 void efx_farch_rx_push_indir_table(struct efx_nic *efx);
 777
 778 int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
 779                          unsigned int len, gfp_t gfp_flags);
 780 void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
 781
 782 /* Tests */
 783 struct efx_farch_register_test {
 784         unsigned address;
 785         efx_oword_t mask;
 786 };
 787 int efx_farch_test_registers(struct efx_nic *efx,
 788                              const struct efx_farch_register_test *regs,
 789                              size_t n_regs);
 790
 791 size_t efx_nic_get_regs_len(struct efx_nic *efx);
 792 void efx_nic_get_regs(struct efx_nic *efx, void *buf);
 793
 794 size_t efx_nic_describe_stats(const struct efx_hw_stat_desc *desc, size_t count,
 795                               const unsigned long *mask, u8 *names);
 796 void efx_nic_update_stats(const struct efx_hw_stat_desc *desc, size_t count,
 797                           const unsigned long *mask, u64 *stats,
 798                           const void *dma_buf, bool accumulate);
 799 void efx_nic_fix_nodesc_drop_stat(struct efx_nic *efx, u64 *stat);
 800
 801 #define EFX_MAX_FLUSH_TIME 5000
 802
 803 void efx_farch_generate_event(struct efx_nic *efx, unsigned int evq,
 804                               efx_qword_t *event);
 805
 806 #endif /* EFX_NIC_H */