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 /* Report whether the NIC considers this TX queue empty, given the
  75  * write_count used for the last doorbell push.  May return false
  76  * negative.
  77  */
  78 static inline bool __efx_nic_tx_is_empty(struct efx_tx_queue *tx_queue,
  79                                          unsigned int write_count)
  80 {
  81         unsigned int empty_read_count = ACCESS_ONCE(tx_queue->empty_read_count);
  82
  83         if (empty_read_count == 0)
  84                 return false;
  85
  86         return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0;
  87 }
  88
  89 static inline bool efx_nic_tx_is_empty(struct efx_tx_queue *tx_queue)
  90 {
  91         return __efx_nic_tx_is_empty(tx_queue, tx_queue->write_count);
  92 }
  93
  94 /* Decide whether to push a TX descriptor to the NIC vs merely writing
  95  * the doorbell.  This can reduce latency when we are adding a single
  96  * descriptor to an empty queue, but is otherwise pointless.  Further,
  97  * Falcon and Siena have hardware bugs (SF bug 33851) that may be
  98  * triggered if we don't check this.
  99  */
 100 static inline bool efx_nic_may_push_tx_desc(struct efx_tx_queue *tx_queue,
 101                                             unsigned int write_count)
 102 {
 103         bool was_empty = __efx_nic_tx_is_empty(tx_queue, write_count);
 104
 105         tx_queue->empty_read_count = 0;
 106         return was_empty && tx_queue->write_count - write_count == 1;
 107 }
 108
 109 /* Returns a pointer to the specified descriptor in the RX descriptor queue */
 110 static inline efx_qword_t *
 111 efx_rx_desc(struct efx_rx_queue *rx_queue, unsigned int index)
 112 {
 113         return ((efx_qword_t *) (rx_queue->rxd.buf.addr)) + index;
 114 }
 115
 116 enum {
 117         PHY_TYPE_NONE = 0,
 118         PHY_TYPE_TXC43128 = 1,
 119         PHY_TYPE_88E1111 = 2,
 120         PHY_TYPE_SFX7101 = 3,
 121         PHY_TYPE_QT2022C2 = 4,
 122         PHY_TYPE_PM8358 = 6,
 123         PHY_TYPE_SFT9001A = 8,
 124         PHY_TYPE_QT2025C = 9,
 125         PHY_TYPE_SFT9001B = 10,
 126 };
 127
 128 #define FALCON_XMAC_LOOPBACKS                   \
 129         ((1 << LOOPBACK_XGMII) |                \
 130          (1 << LOOPBACK_XGXS) |                 \
 131          (1 << LOOPBACK_XAUI))
 132
 133 /* Alignment of PCIe DMA boundaries (4KB) */
 134 #define EFX_PAGE_SIZE   4096
 135 /* Size and alignment of buffer table entries (same) */
 136 #define EFX_BUF_SIZE    EFX_PAGE_SIZE
 137
 138 /**
 139  * struct falcon_board_type - board operations and type information
 140  * @id: Board type id, as found in NVRAM
 141  * @init: Allocate resources and initialise peripheral hardware
 142  * @init_phy: Do board-specific PHY initialisation
 143  * @fini: Shut down hardware and free resources
 144  * @set_id_led: Set state of identifying LED or revert to automatic function
 145  * @monitor: Board-specific health check function
 146  */
 147 struct falcon_board_type {
 148         u8 id;
 149         int (*init) (struct efx_nic *nic);
 150         void (*init_phy) (struct efx_nic *efx);
 151         void (*fini) (struct efx_nic *nic);
 152         void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
 153         int (*monitor) (struct efx_nic *nic);
 154 };
 155
 156 /**
 157  * struct falcon_board - board information
 158  * @type: Type of board
 159  * @major: Major rev. ('A', 'B' ...)
 160  * @minor: Minor rev. (0, 1, ...)
 161  * @i2c_adap: I2C adapter for on-board peripherals
 162  * @i2c_data: Data for bit-banging algorithm
 163  * @hwmon_client: I2C client for hardware monitor
 164  * @ioexp_client: I2C client for power/port control
 165  */
 166 struct falcon_board {
 167         const struct falcon_board_type *type;
 168         int major;
 169         int minor;
 170         struct i2c_adapter i2c_adap;
 171         struct i2c_algo_bit_data i2c_data;
 172         struct i2c_client *hwmon_client, *ioexp_client;
 173 };
 174
 175 /**
 176  * struct falcon_spi_device - a Falcon SPI (Serial Peripheral Interface) device
 177  * @device_id:          Controller's id for the device
 178  * @size:               Size (in bytes)
 179  * @addr_len:           Number of address bytes in read/write commands
 180  * @munge_address:      Flag whether addresses should be munged.
 181  *      Some devices with 9-bit addresses (e.g. AT25040A EEPROM)
 182  *      use bit 3 of the command byte as address bit A8, rather
 183  *      than having a two-byte address.  If this flag is set, then
 184  *      commands should be munged in this way.
 185  * @erase_command:      Erase command (or 0 if sector erase not needed).
 186  * @erase_size:         Erase sector size (in bytes)
 187  *      Erase commands affect sectors with this size and alignment.
 188  *      This must be a power of two.
 189  * @block_size:         Write block size (in bytes).
 190  *      Write commands are limited to blocks with this size and alignment.
 191  */
 192 struct falcon_spi_device {
 193         int device_id;
 194         unsigned int size;
 195         unsigned int addr_len;
 196         unsigned int munge_address:1;
 197         u8 erase_command;
 198         unsigned int erase_size;
 199         unsigned int block_size;
 200 };
 201
 202 static inline bool falcon_spi_present(const struct falcon_spi_device *spi)
 203 {
 204         return spi->size != 0;
 205 }
 206
 207 enum {
 208         FALCON_STAT_tx_bytes,
 209         FALCON_STAT_tx_packets,
 210         FALCON_STAT_tx_pause,
 211         FALCON_STAT_tx_control,
 212         FALCON_STAT_tx_unicast,
 213         FALCON_STAT_tx_multicast,
 214         FALCON_STAT_tx_broadcast,
 215         FALCON_STAT_tx_lt64,
 216         FALCON_STAT_tx_64,
 217         FALCON_STAT_tx_65_to_127,
 218         FALCON_STAT_tx_128_to_255,
 219         FALCON_STAT_tx_256_to_511,
 220         FALCON_STAT_tx_512_to_1023,
 221         FALCON_STAT_tx_1024_to_15xx,
 222         FALCON_STAT_tx_15xx_to_jumbo,
 223         FALCON_STAT_tx_gtjumbo,
 224         FALCON_STAT_tx_non_tcpudp,
 225         FALCON_STAT_tx_mac_src_error,
 226         FALCON_STAT_tx_ip_src_error,
 227         FALCON_STAT_rx_bytes,
 228         FALCON_STAT_rx_good_bytes,
 229         FALCON_STAT_rx_bad_bytes,
 230         FALCON_STAT_rx_packets,
 231         FALCON_STAT_rx_good,
 232         FALCON_STAT_rx_bad,
 233         FALCON_STAT_rx_pause,
 234         FALCON_STAT_rx_control,
 235         FALCON_STAT_rx_unicast,
 236         FALCON_STAT_rx_multicast,
 237         FALCON_STAT_rx_broadcast,
 238         FALCON_STAT_rx_lt64,
 239         FALCON_STAT_rx_64,
 240         FALCON_STAT_rx_65_to_127,
 241         FALCON_STAT_rx_128_to_255,
 242         FALCON_STAT_rx_256_to_511,
 243         FALCON_STAT_rx_512_to_1023,
 244         FALCON_STAT_rx_1024_to_15xx,
 245         FALCON_STAT_rx_15xx_to_jumbo,
 246         FALCON_STAT_rx_gtjumbo,
 247         FALCON_STAT_rx_bad_lt64,
 248         FALCON_STAT_rx_bad_gtjumbo,
 249         FALCON_STAT_rx_overflow,
 250         FALCON_STAT_rx_symbol_error,
 251         FALCON_STAT_rx_align_error,
 252         FALCON_STAT_rx_length_error,
 253         FALCON_STAT_rx_internal_error,
 254         FALCON_STAT_rx_nodesc_drop_cnt,
 255         FALCON_STAT_COUNT
 256 };
 257
 258 /**
 259  * struct falcon_nic_data - Falcon NIC state
 260  * @pci_dev2: Secondary function of Falcon A
 261  * @board: Board state and functions
 262  * @stats: Hardware statistics
 263  * @stats_disable_count: Nest count for disabling statistics fetches
 264  * @stats_pending: Is there a pending DMA of MAC statistics.
 265  * @stats_timer: A timer for regularly fetching MAC statistics.
 266  * @spi_flash: SPI flash device
 267  * @spi_eeprom: SPI EEPROM device
 268  * @spi_lock: SPI bus lock
 269  * @mdio_lock: MDIO bus lock
 270  * @xmac_poll_required: XMAC link state needs polling
 271  */
 272 struct falcon_nic_data {
 273         struct pci_dev *pci_dev2;
 274         struct falcon_board board;
 275         u64 stats[FALCON_STAT_COUNT];
 276         unsigned int stats_disable_count;
 277         bool stats_pending;
 278         struct timer_list stats_timer;
 279         struct falcon_spi_device spi_flash;
 280         struct falcon_spi_device spi_eeprom;
 281         struct mutex spi_lock;
 282         struct mutex mdio_lock;
 283         bool xmac_poll_required;
 284 };
 285
 286 static inline struct falcon_board *falcon_board(struct efx_nic *efx)
 287 {
 288         struct falcon_nic_data *data = efx->nic_data;
 289         return &data->board;
 290 }
 291
 292 enum {
 293         SIENA_STAT_tx_bytes,
 294         SIENA_STAT_tx_good_bytes,
 295         SIENA_STAT_tx_bad_bytes,
 296         SIENA_STAT_tx_packets,
 297         SIENA_STAT_tx_bad,
 298         SIENA_STAT_tx_pause,
 299         SIENA_STAT_tx_control,
 300         SIENA_STAT_tx_unicast,
 301         SIENA_STAT_tx_multicast,
 302         SIENA_STAT_tx_broadcast,
 303         SIENA_STAT_tx_lt64,
 304         SIENA_STAT_tx_64,
 305         SIENA_STAT_tx_65_to_127,
 306         SIENA_STAT_tx_128_to_255,
 307         SIENA_STAT_tx_256_to_511,
 308         SIENA_STAT_tx_512_to_1023,
 309         SIENA_STAT_tx_1024_to_15xx,
 310         SIENA_STAT_tx_15xx_to_jumbo,
 311         SIENA_STAT_tx_gtjumbo,
 312         SIENA_STAT_tx_collision,
 313         SIENA_STAT_tx_single_collision,
 314         SIENA_STAT_tx_multiple_collision,
 315         SIENA_STAT_tx_excessive_collision,
 316         SIENA_STAT_tx_deferred,
 317         SIENA_STAT_tx_late_collision,
 318         SIENA_STAT_tx_excessive_deferred,
 319         SIENA_STAT_tx_non_tcpudp,
 320         SIENA_STAT_tx_mac_src_error,
 321         SIENA_STAT_tx_ip_src_error,
 322         SIENA_STAT_rx_bytes,
 323         SIENA_STAT_rx_good_bytes,
 324         SIENA_STAT_rx_bad_bytes,
 325         SIENA_STAT_rx_packets,
 326         SIENA_STAT_rx_good,
 327         SIENA_STAT_rx_bad,
 328         SIENA_STAT_rx_pause,
 329         SIENA_STAT_rx_control,
 330         SIENA_STAT_rx_unicast,
 331         SIENA_STAT_rx_multicast,
 332         SIENA_STAT_rx_broadcast,
 333         SIENA_STAT_rx_lt64,
 334         SIENA_STAT_rx_64,
 335         SIENA_STAT_rx_65_to_127,
 336         SIENA_STAT_rx_128_to_255,
 337         SIENA_STAT_rx_256_to_511,
 338         SIENA_STAT_rx_512_to_1023,
 339         SIENA_STAT_rx_1024_to_15xx,
 340         SIENA_STAT_rx_15xx_to_jumbo,
 341         SIENA_STAT_rx_gtjumbo,
 342         SIENA_STAT_rx_bad_gtjumbo,
 343         SIENA_STAT_rx_overflow,
 344         SIENA_STAT_rx_false_carrier,
 345         SIENA_STAT_rx_symbol_error,
 346         SIENA_STAT_rx_align_error,
 347         SIENA_STAT_rx_length_error,
 348         SIENA_STAT_rx_internal_error,
 349         SIENA_STAT_rx_nodesc_drop_cnt,
 350         SIENA_STAT_COUNT
 351 };
 352
 353 /**
 354  * struct siena_nic_data - Siena NIC state
 355  * @wol_filter_id: Wake-on-LAN packet filter id
 356  * @stats: Hardware statistics
 357  */
 358 struct siena_nic_data {
 359         int wol_filter_id;
 360         u64 stats[SIENA_STAT_COUNT];
 361 };
 362
 363 enum {
 364         EF10_STAT_tx_bytes,
 365         EF10_STAT_tx_packets,
 366         EF10_STAT_tx_pause,
 367         EF10_STAT_tx_control,
 368         EF10_STAT_tx_unicast,
 369         EF10_STAT_tx_multicast,
 370         EF10_STAT_tx_broadcast,
 371         EF10_STAT_tx_lt64,
 372         EF10_STAT_tx_64,
 373         EF10_STAT_tx_65_to_127,
 374         EF10_STAT_tx_128_to_255,
 375         EF10_STAT_tx_256_to_511,
 376         EF10_STAT_tx_512_to_1023,
 377         EF10_STAT_tx_1024_to_15xx,
 378         EF10_STAT_tx_15xx_to_jumbo,
 379         EF10_STAT_rx_bytes,
 380         EF10_STAT_rx_bytes_minus_good_bytes,
 381         EF10_STAT_rx_good_bytes,
 382         EF10_STAT_rx_bad_bytes,
 383         EF10_STAT_rx_packets,
 384         EF10_STAT_rx_good,
 385         EF10_STAT_rx_bad,
 386         EF10_STAT_rx_pause,
 387         EF10_STAT_rx_control,
 388         EF10_STAT_rx_unicast,
 389         EF10_STAT_rx_multicast,
 390         EF10_STAT_rx_broadcast,
 391         EF10_STAT_rx_lt64,
 392         EF10_STAT_rx_64,
 393         EF10_STAT_rx_65_to_127,
 394         EF10_STAT_rx_128_to_255,
 395         EF10_STAT_rx_256_to_511,
 396         EF10_STAT_rx_512_to_1023,
 397         EF10_STAT_rx_1024_to_15xx,
 398         EF10_STAT_rx_15xx_to_jumbo,
 399         EF10_STAT_rx_gtjumbo,
 400         EF10_STAT_rx_bad_gtjumbo,
 401         EF10_STAT_rx_overflow,
 402         EF10_STAT_rx_align_error,
 403         EF10_STAT_rx_length_error,
 404         EF10_STAT_rx_nodesc_drops,
 405         EF10_STAT_rx_pm_trunc_bb_overflow,
 406         EF10_STAT_rx_pm_discard_bb_overflow,
 407         EF10_STAT_rx_pm_trunc_vfifo_full,
 408         EF10_STAT_rx_pm_discard_vfifo_full,
 409         EF10_STAT_rx_pm_trunc_qbb,
 410         EF10_STAT_rx_pm_discard_qbb,
 411         EF10_STAT_rx_pm_discard_mapping,
 412         EF10_STAT_rx_dp_q_disabled_packets,
 413         EF10_STAT_rx_dp_di_dropped_packets,
 414         EF10_STAT_rx_dp_streaming_packets,
 415         EF10_STAT_rx_dp_hlb_fetch,
 416         EF10_STAT_rx_dp_hlb_wait,
 417         EF10_STAT_COUNT
 418 };
 419
 420 /* Maximum number of TX PIO buffers we may allocate to a function.
 421  * This matches the total number of buffers on each SFC9100-family
 422  * controller.
 423  */
 424 #define EF10_TX_PIOBUF_COUNT 16
 425
 426 /**
 427  * struct efx_ef10_nic_data - EF10 architecture NIC state
 428  * @mcdi_buf: DMA buffer for MCDI
 429  * @warm_boot_count: Last seen MC warm boot count
 430  * @vi_base: Absolute index of first VI in this function
 431  * @n_allocated_vis: Number of VIs allocated to this function
 432  * @must_realloc_vis: Flag: VIs have yet to be reallocated after MC reboot
 433  * @must_restore_filters: Flag: filters have yet to be restored after MC reboot
 434  * @n_piobufs: Number of PIO buffers allocated to this function
 435  * @wc_membase: Base address of write-combining mapping of the memory BAR
 436  * @pio_write_base: Base address for writing PIO buffers
 437  * @pio_write_vi_base: Relative VI number for @pio_write_base
 438  * @piobuf_handle: Handle of each PIO buffer allocated
 439  * @must_restore_piobufs: Flag: PIO buffers have yet to be restored after MC
 440  *      reboot
 441  * @rx_rss_context: Firmware handle for our RSS context
 442  * @stats: Hardware statistics
 443  * @workaround_35388: Flag: firmware supports workaround for bug 35388
 444  * @must_check_datapath_caps: Flag: @datapath_caps needs to be revalidated
 445  *      after MC reboot
 446  * @datapath_caps: Capabilities of datapath firmware (FLAGS1 field of
 447  *      %MC_CMD_GET_CAPABILITIES response)
 448  */
 449 struct efx_ef10_nic_data {
 450         struct efx_buffer mcdi_buf;
 451         u16 warm_boot_count;
 452         unsigned int vi_base;
 453         unsigned int n_allocated_vis;
 454         bool must_realloc_vis;
 455         bool must_restore_filters;
 456         unsigned int n_piobufs;
 457         void __iomem *wc_membase, *pio_write_base;
 458         unsigned int pio_write_vi_base;
 459         unsigned int piobuf_handle[EF10_TX_PIOBUF_COUNT];
 460         bool must_restore_piobufs;
 461         u32 rx_rss_context;
 462         u64 stats[EF10_STAT_COUNT];
 463         bool workaround_35388;
 464         bool must_check_datapath_caps;
 465         u32 datapath_caps;
 466 };
 467
 468 /*
 469  * On the SFC9000 family each port is associated with 1 PCI physical
 470  * function (PF) handled by sfc and a configurable number of virtual
 471  * functions (VFs) that may be handled by some other driver, often in
 472  * a VM guest.  The queue pointer registers are mapped in both PF and
 473  * VF BARs such that an 8K region provides access to a single RX, TX
 474  * and event queue (collectively a Virtual Interface, VI or VNIC).
 475  *
 476  * The PF has access to all 1024 VIs while VFs are mapped to VIs
 477  * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered
 478  * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE).
 479  * The number of VIs and the VI_SCALE value are configurable but must
 480  * be established at boot time by firmware.
 481  */
 482
 483 /* Maximum VI_SCALE parameter supported by Siena */
 484 #define EFX_VI_SCALE_MAX 6
 485 /* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX),
 486  * so this is the smallest allowed value. */
 487 #define EFX_VI_BASE 128U
 488 /* Maximum number of VFs allowed */
 489 #define EFX_VF_COUNT_MAX 127
 490 /* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */
 491 #define EFX_MAX_VF_EVQ_SIZE 8192UL
 492 /* The number of buffer table entries reserved for each VI on a VF */
 493 #define EFX_VF_BUFTBL_PER_VI                                    \
 494         ((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) *        \
 495          sizeof(efx_qword_t) / EFX_BUF_SIZE)
 496
 497 #ifdef CONFIG_SFC_SRIOV
 498
 499 static inline bool efx_sriov_wanted(struct efx_nic *efx)
 500 {
 501         return efx->vf_count != 0;
 502 }
 503 static inline bool efx_sriov_enabled(struct efx_nic *efx)
 504 {
 505         return efx->vf_init_count != 0;
 506 }
 507 static inline unsigned int efx_vf_size(struct efx_nic *efx)
 508 {
 509         return 1 << efx->vi_scale;
 510 }
 511
 512 int efx_init_sriov(void);
 513 void efx_sriov_probe(struct efx_nic *efx);
 514 int efx_sriov_init(struct efx_nic *efx);
 515 void efx_sriov_mac_address_changed(struct efx_nic *efx);
 516 void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event);
 517 void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event);
 518 void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event);
 519 void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq);
 520 void efx_sriov_flr(struct efx_nic *efx, unsigned flr);
 521 void efx_sriov_reset(struct efx_nic *efx);
 522 void efx_sriov_fini(struct efx_nic *efx);
 523 void efx_fini_sriov(void);
 524
 525 #else
 526
 527 static inline bool efx_sriov_wanted(struct efx_nic *efx) { return false; }
 528 static inline bool efx_sriov_enabled(struct efx_nic *efx) { return false; }
 529 static inline unsigned int efx_vf_size(struct efx_nic *efx) { return 0; }
 530
 531 static inline int efx_init_sriov(void) { return 0; }
 532 static inline void efx_sriov_probe(struct efx_nic *efx) {}
 533 static inline int efx_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
 534 static inline void efx_sriov_mac_address_changed(struct efx_nic *efx) {}
 535 static inline void efx_sriov_tx_flush_done(struct efx_nic *efx,
 536                                            efx_qword_t *event) {}
 537 static inline void efx_sriov_rx_flush_done(struct efx_nic *efx,
 538                                            efx_qword_t *event) {}
 539 static inline void efx_sriov_event(struct efx_channel *channel,
 540                                    efx_qword_t *event) {}
 541 static inline void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq) {}
 542 static inline void efx_sriov_flr(struct efx_nic *efx, unsigned flr) {}
 543 static inline void efx_sriov_reset(struct efx_nic *efx) {}
 544 static inline void efx_sriov_fini(struct efx_nic *efx) {}
 545 static inline void efx_fini_sriov(void) {}
 546
 547 #endif
 548
 549 int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac);
 550 int efx_sriov_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos);
 551 int efx_sriov_get_vf_config(struct net_device *dev, int vf,
 552                             struct ifla_vf_info *ivf);
 553 int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf,
 554                               bool spoofchk);
 555
 556 struct ethtool_ts_info;
 557 int efx_ptp_probe(struct efx_nic *efx, struct efx_channel *channel);
 558 void efx_ptp_defer_probe_with_channel(struct efx_nic *efx);
 559 void efx_ptp_remove(struct efx_nic *efx);
 560 int efx_ptp_set_ts_config(struct efx_nic *efx, struct ifreq *ifr);
 561 int efx_ptp_get_ts_config(struct efx_nic *efx, struct ifreq *ifr);
 562 void efx_ptp_get_ts_info(struct efx_nic *efx, struct ethtool_ts_info *ts_info);
 563 bool efx_ptp_is_ptp_tx(struct efx_nic *efx, struct sk_buff *skb);
 564 int efx_ptp_get_mode(struct efx_nic *efx);
 565 int efx_ptp_change_mode(struct efx_nic *efx, bool enable_wanted,
 566                         unsigned int new_mode);
 567 int efx_ptp_tx(struct efx_nic *efx, struct sk_buff *skb);
 568 void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev);
 569 void efx_time_sync_event(struct efx_channel *channel, efx_qword_t *ev);
 570 void __efx_rx_skb_attach_timestamp(struct efx_channel *channel,
 571                                    struct sk_buff *skb);
 572 static inline void efx_rx_skb_attach_timestamp(struct efx_channel *channel,
 573                                                struct sk_buff *skb)
 574 {
 575         if (channel->sync_events_state == SYNC_EVENTS_VALID)
 576                 __efx_rx_skb_attach_timestamp(channel, skb);
 577 }
 578 void efx_ptp_start_datapath(struct efx_nic *efx);
 579 void efx_ptp_stop_datapath(struct efx_nic *efx);
 580
 581 extern const struct efx_nic_type falcon_a1_nic_type;
 582 extern const struct efx_nic_type falcon_b0_nic_type;
 583 extern const struct efx_nic_type siena_a0_nic_type;
 584 extern const struct efx_nic_type efx_hunt_a0_nic_type;
 585
 586 /**************************************************************************
 587  *
 588  * Externs
 589  *
 590  **************************************************************************
 591  */
 592
 593 int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
 594
 595 /* TX data path */
 596 static inline int efx_nic_probe_tx(struct efx_tx_queue *tx_queue)
 597 {
 598         return tx_queue->efx->type->tx_probe(tx_queue);
 599 }
 600 static inline void efx_nic_init_tx(struct efx_tx_queue *tx_queue)
 601 {
 602         tx_queue->efx->type->tx_init(tx_queue);
 603 }
 604 static inline void efx_nic_remove_tx(struct efx_tx_queue *tx_queue)
 605 {
 606         tx_queue->efx->type->tx_remove(tx_queue);
 607 }
 608 static inline void efx_nic_push_buffers(struct efx_tx_queue *tx_queue)
 609 {
 610         tx_queue->efx->type->tx_write(tx_queue);
 611 }
 612
 613 /* RX data path */
 614 static inline int efx_nic_probe_rx(struct efx_rx_queue *rx_queue)
 615 {
 616         return rx_queue->efx->type->rx_probe(rx_queue);
 617 }
 618 static inline void efx_nic_init_rx(struct efx_rx_queue *rx_queue)
 619 {
 620         rx_queue->efx->type->rx_init(rx_queue);
 621 }
 622 static inline void efx_nic_remove_rx(struct efx_rx_queue *rx_queue)
 623 {
 624         rx_queue->efx->type->rx_remove(rx_queue);
 625 }
 626 static inline void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue)
 627 {
 628         rx_queue->efx->type->rx_write(rx_queue);
 629 }
 630 static inline void efx_nic_generate_fill_event(struct efx_rx_queue *rx_queue)
 631 {
 632         rx_queue->efx->type->rx_defer_refill(rx_queue);
 633 }
 634
 635 /* Event data path */
 636 static inline int efx_nic_probe_eventq(struct efx_channel *channel)
 637 {
 638         return channel->efx->type->ev_probe(channel);
 639 }
 640 static inline int efx_nic_init_eventq(struct efx_channel *channel)
 641 {
 642         return channel->efx->type->ev_init(channel);
 643 }
 644 static inline void efx_nic_fini_eventq(struct efx_channel *channel)
 645 {
 646         channel->efx->type->ev_fini(channel);
 647 }
 648 static inline void efx_nic_remove_eventq(struct efx_channel *channel)
 649 {
 650         channel->efx->type->ev_remove(channel);
 651 }
 652 static inline int
 653 efx_nic_process_eventq(struct efx_channel *channel, int quota)
 654 {
 655         return channel->efx->type->ev_process(channel, quota);
 656 }
 657 static inline void efx_nic_eventq_read_ack(struct efx_channel *channel)
 658 {
 659         channel->efx->type->ev_read_ack(channel);
 660 }
 661 void efx_nic_event_test_start(struct efx_channel *channel);
 662
 663 /* Falcon/Siena queue operations */
 664 int efx_farch_tx_probe(struct efx_tx_queue *tx_queue);
 665 void efx_farch_tx_init(struct efx_tx_queue *tx_queue);
 666 void efx_farch_tx_fini(struct efx_tx_queue *tx_queue);
 667 void efx_farch_tx_remove(struct efx_tx_queue *tx_queue);
 668 void efx_farch_tx_write(struct efx_tx_queue *tx_queue);
 669 int efx_farch_rx_probe(struct efx_rx_queue *rx_queue);
 670 void efx_farch_rx_init(struct efx_rx_queue *rx_queue);
 671 void efx_farch_rx_fini(struct efx_rx_queue *rx_queue);
 672 void efx_farch_rx_remove(struct efx_rx_queue *rx_queue);
 673 void efx_farch_rx_write(struct efx_rx_queue *rx_queue);
 674 void efx_farch_rx_defer_refill(struct efx_rx_queue *rx_queue);
 675 int efx_farch_ev_probe(struct efx_channel *channel);
 676 int efx_farch_ev_init(struct efx_channel *channel);
 677 void efx_farch_ev_fini(struct efx_channel *channel);
 678 void efx_farch_ev_remove(struct efx_channel *channel);
 679 int efx_farch_ev_process(struct efx_channel *channel, int quota);
 680 void efx_farch_ev_read_ack(struct efx_channel *channel);
 681 void efx_farch_ev_test_generate(struct efx_channel *channel);
 682
 683 /* Falcon/Siena filter operations */
 684 int efx_farch_filter_table_probe(struct efx_nic *efx);
 685 void efx_farch_filter_table_restore(struct efx_nic *efx);
 686 void efx_farch_filter_table_remove(struct efx_nic *efx);
 687 void efx_farch_filter_update_rx_scatter(struct efx_nic *efx);
 688 s32 efx_farch_filter_insert(struct efx_nic *efx, struct efx_filter_spec *spec,
 689                             bool replace);
 690 int efx_farch_filter_remove_safe(struct efx_nic *efx,
 691                                  enum efx_filter_priority priority,
 692                                  u32 filter_id);
 693 int efx_farch_filter_get_safe(struct efx_nic *efx,
 694                               enum efx_filter_priority priority, u32 filter_id,
 695                               struct efx_filter_spec *);
 696 int efx_farch_filter_clear_rx(struct efx_nic *efx,
 697                               enum efx_filter_priority priority);
 698 u32 efx_farch_filter_count_rx_used(struct efx_nic *efx,
 699                                    enum efx_filter_priority priority);
 700 u32 efx_farch_filter_get_rx_id_limit(struct efx_nic *efx);
 701 s32 efx_farch_filter_get_rx_ids(struct efx_nic *efx,
 702                                 enum efx_filter_priority priority, u32 *buf,
 703                                 u32 size);
 704 #ifdef CONFIG_RFS_ACCEL
 705 s32 efx_farch_filter_rfs_insert(struct efx_nic *efx,
 706                                 struct efx_filter_spec *spec);
 707 bool efx_farch_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id,
 708                                      unsigned int index);
 709 #endif
 710 void efx_farch_filter_sync_rx_mode(struct efx_nic *efx);
 711
 712 bool efx_nic_event_present(struct efx_channel *channel);
 713
 714 /* Some statistics are computed as A - B where A and B each increase
 715  * linearly with some hardware counter(s) and the counters are read
 716  * asynchronously.  If the counters contributing to B are always read
 717  * after those contributing to A, the computed value may be lower than
 718  * the true value by some variable amount, and may decrease between
 719  * subsequent computations.
 720  *
 721  * We should never allow statistics to decrease or to exceed the true
 722  * value.  Since the computed value will never be greater than the
 723  * true value, we can achieve this by only storing the computed value
 724  * when it increases.
 725  */
 726 static inline void efx_update_diff_stat(u64 *stat, u64 diff)
 727 {
 728         if ((s64)(diff - *stat) > 0)
 729                 *stat = diff;
 730 }
 731
 732 /* Interrupts */
 733 int efx_nic_init_interrupt(struct efx_nic *efx);
 734 void efx_nic_irq_test_start(struct efx_nic *efx);
 735 void efx_nic_fini_interrupt(struct efx_nic *efx);
 736
 737 /* Falcon/Siena interrupts */
 738 void efx_farch_irq_enable_master(struct efx_nic *efx);
 739 void efx_farch_irq_test_generate(struct efx_nic *efx);
 740 void efx_farch_irq_disable_master(struct efx_nic *efx);
 741 irqreturn_t efx_farch_msi_interrupt(int irq, void *dev_id);
 742 irqreturn_t efx_farch_legacy_interrupt(int irq, void *dev_id);
 743 irqreturn_t efx_farch_fatal_interrupt(struct efx_nic *efx);
 744
 745 static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel)
 746 {
 747         return ACCESS_ONCE(channel->event_test_cpu);
 748 }
 749 static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx)
 750 {
 751         return ACCESS_ONCE(efx->last_irq_cpu);
 752 }
 753
 754 /* Global Resources */
 755 int efx_nic_flush_queues(struct efx_nic *efx);
 756 void siena_prepare_flush(struct efx_nic *efx);
 757 int efx_farch_fini_dmaq(struct efx_nic *efx);
 758 void siena_finish_flush(struct efx_nic *efx);
 759 void falcon_start_nic_stats(struct efx_nic *efx);
 760 void falcon_stop_nic_stats(struct efx_nic *efx);
 761 int falcon_reset_xaui(struct efx_nic *efx);
 762 void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw);
 763 void efx_farch_init_common(struct efx_nic *efx);
 764 void efx_ef10_handle_drain_event(struct efx_nic *efx);
 765 void efx_farch_rx_push_indir_table(struct efx_nic *efx);
 766
 767 int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
 768                          unsigned int len, gfp_t gfp_flags);
 769 void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
 770
 771 /* Tests */
 772 struct efx_farch_register_test {
 773         unsigned address;
 774         efx_oword_t mask;
 775 };
 776 int efx_farch_test_registers(struct efx_nic *efx,
 777                              const struct efx_farch_register_test *regs,
 778                              size_t n_regs);
 779
 780 size_t efx_nic_get_regs_len(struct efx_nic *efx);
 781 void efx_nic_get_regs(struct efx_nic *efx, void *buf);
 782
 783 size_t efx_nic_describe_stats(const struct efx_hw_stat_desc *desc, size_t count,
 784                               const unsigned long *mask, u8 *names);
 785 void efx_nic_update_stats(const struct efx_hw_stat_desc *desc, size_t count,
 786                           const unsigned long *mask, u64 *stats,
 787                           const void *dma_buf, bool accumulate);
 788 void efx_nic_fix_nodesc_drop_stat(struct efx_nic *efx, u64 *stat);
 789
 790 #define EFX_MAX_FLUSH_TIME 5000
 791
 792 void efx_farch_generate_event(struct efx_nic *efx, unsigned int evq,
 793                               efx_qword_t *event);
 794
 795 #endif /* EFX_NIC_H */