drivers/net/ethernet/sfc/nic.h

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2005-2006 Fen Systems Ltd.
   4  * Copyright 2006-2011 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/i2c-algo-bit.h>
  15 #include "net_driver.h"
  16 #include "efx.h"
  17 #include "mcdi.h"
  18 #include "spi.h"
  19
  20 /*
  21  * Falcon hardware control
  22  */
  23
  24 enum {
  25         EFX_REV_FALCON_A0 = 0,
  26         EFX_REV_FALCON_A1 = 1,
  27         EFX_REV_FALCON_B0 = 2,
  28         EFX_REV_SIENA_A0 = 3,
  29 };
  30
  31 static inline int efx_nic_rev(struct efx_nic *efx)
  32 {
  33         return efx->type->revision;
  34 }
  35
  36 extern u32 efx_nic_fpga_ver(struct efx_nic *efx);
  37
  38 /* NIC has two interlinked PCI functions for the same port. */
  39 static inline bool efx_nic_is_dual_func(struct efx_nic *efx)
  40 {
  41         return efx_nic_rev(efx) < EFX_REV_FALCON_B0;
  42 }
  43
  44 enum {
  45         PHY_TYPE_NONE = 0,
  46         PHY_TYPE_TXC43128 = 1,
  47         PHY_TYPE_88E1111 = 2,
  48         PHY_TYPE_SFX7101 = 3,
  49         PHY_TYPE_QT2022C2 = 4,
  50         PHY_TYPE_PM8358 = 6,
  51         PHY_TYPE_SFT9001A = 8,
  52         PHY_TYPE_QT2025C = 9,
  53         PHY_TYPE_SFT9001B = 10,
  54 };
  55
  56 #define FALCON_XMAC_LOOPBACKS                   \
  57         ((1 << LOOPBACK_XGMII) |                \
  58          (1 << LOOPBACK_XGXS) |                 \
  59          (1 << LOOPBACK_XAUI))
  60
  61 #define FALCON_GMAC_LOOPBACKS                   \
  62         (1 << LOOPBACK_GMAC)
  63
  64 /* Alignment of PCIe DMA boundaries (4KB) */
  65 #define EFX_PAGE_SIZE   4096
  66 /* Size and alignment of buffer table entries (same) */
  67 #define EFX_BUF_SIZE    EFX_PAGE_SIZE
  68
  69 /**
  70  * struct falcon_board_type - board operations and type information
  71  * @id: Board type id, as found in NVRAM
  72  * @init: Allocate resources and initialise peripheral hardware
  73  * @init_phy: Do board-specific PHY initialisation
  74  * @fini: Shut down hardware and free resources
  75  * @set_id_led: Set state of identifying LED or revert to automatic function
  76  * @monitor: Board-specific health check function
  77  */
  78 struct falcon_board_type {
  79         u8 id;
  80         int (*init) (struct efx_nic *nic);
  81         void (*init_phy) (struct efx_nic *efx);
  82         void (*fini) (struct efx_nic *nic);
  83         void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
  84         int (*monitor) (struct efx_nic *nic);
  85 };
  86
  87 /**
  88  * struct falcon_board - board information
  89  * @type: Type of board
  90  * @major: Major rev. ('A', 'B' ...)
  91  * @minor: Minor rev. (0, 1, ...)
  92  * @i2c_adap: I2C adapter for on-board peripherals
  93  * @i2c_data: Data for bit-banging algorithm
  94  * @hwmon_client: I2C client for hardware monitor
  95  * @ioexp_client: I2C client for power/port control
  96  */
  97 struct falcon_board {
  98         const struct falcon_board_type *type;
  99         int major;
 100         int minor;
 101         struct i2c_adapter i2c_adap;
 102         struct i2c_algo_bit_data i2c_data;
 103         struct i2c_client *hwmon_client, *ioexp_client;
 104 };
 105
 106 /**
 107  * struct falcon_nic_data - Falcon NIC state
 108  * @pci_dev2: Secondary function of Falcon A
 109  * @board: Board state and functions
 110  * @stats_disable_count: Nest count for disabling statistics fetches
 111  * @stats_pending: Is there a pending DMA of MAC statistics.
 112  * @stats_timer: A timer for regularly fetching MAC statistics.
 113  * @stats_dma_done: Pointer to the flag which indicates DMA completion.
 114  * @spi_flash: SPI flash device
 115  * @spi_eeprom: SPI EEPROM device
 116  * @spi_lock: SPI bus lock
 117  * @mdio_lock: MDIO bus lock
 118  * @xmac_poll_required: XMAC link state needs polling
 119  */
 120 struct falcon_nic_data {
 121         struct pci_dev *pci_dev2;
 122         struct falcon_board board;
 123         unsigned int stats_disable_count;
 124         bool stats_pending;
 125         struct timer_list stats_timer;
 126         u32 *stats_dma_done;
 127         struct efx_spi_device spi_flash;
 128         struct efx_spi_device spi_eeprom;
 129         struct mutex spi_lock;
 130         struct mutex mdio_lock;
 131         bool xmac_poll_required;
 132 };
 133
 134 static inline struct falcon_board *falcon_board(struct efx_nic *efx)
 135 {
 136         struct falcon_nic_data *data = efx->nic_data;
 137         return &data->board;
 138 }
 139
 140 /**
 141  * struct siena_nic_data - Siena NIC state
 142  * @mcdi: Management-Controller-to-Driver Interface
 143  * @wol_filter_id: Wake-on-LAN packet filter id
 144  * @hwmon: Hardware monitor state
 145  */
 146 struct siena_nic_data {
 147         struct efx_mcdi_iface mcdi;
 148         int wol_filter_id;
 149 #ifdef CONFIG_SFC_MCDI_MON
 150         struct efx_mcdi_mon hwmon;
 151 #endif
 152 };
 153
 154 #ifdef CONFIG_SFC_MCDI_MON
 155 static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
 156 {
 157         struct siena_nic_data *nic_data;
 158         EFX_BUG_ON_PARANOID(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
 159         nic_data = efx->nic_data;
 160         return &nic_data->hwmon;
 161 }
 162 #endif
 163
 164 /*
 165  * On the SFC9000 family each port is associated with 1 PCI physical
 166  * function (PF) handled by sfc and a configurable number of virtual
 167  * functions (VFs) that may be handled by some other driver, often in
 168  * a VM guest.  The queue pointer registers are mapped in both PF and
 169  * VF BARs such that an 8K region provides access to a single RX, TX
 170  * and event queue (collectively a Virtual Interface, VI or VNIC).
 171  *
 172  * The PF has access to all 1024 VIs while VFs are mapped to VIs
 173  * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered
 174  * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE).
 175  * The number of VIs and the VI_SCALE value are configurable but must
 176  * be established at boot time by firmware.
 177  */
 178
 179 /* Maximum VI_SCALE parameter supported by Siena */
 180 #define EFX_VI_SCALE_MAX 6
 181 /* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX),
 182  * so this is the smallest allowed value. */
 183 #define EFX_VI_BASE 128U
 184 /* Maximum number of VFs allowed */
 185 #define EFX_VF_COUNT_MAX 127
 186 /* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */
 187 #define EFX_MAX_VF_EVQ_SIZE 8192UL
 188 /* The number of buffer table entries reserved for each VI on a VF */
 189 #define EFX_VF_BUFTBL_PER_VI                                    \
 190         ((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) *        \
 191          sizeof(efx_qword_t) / EFX_BUF_SIZE)
 192
 193 #ifdef CONFIG_SFC_SRIOV
 194
 195 static inline bool efx_sriov_wanted(struct efx_nic *efx)
 196 {
 197         return efx->vf_count != 0;
 198 }
 199 static inline bool efx_sriov_enabled(struct efx_nic *efx)
 200 {
 201         return efx->vf_init_count != 0;
 202 }
 203 static inline unsigned int efx_vf_size(struct efx_nic *efx)
 204 {
 205         return 1 << efx->vi_scale;
 206 }
 207
 208 extern int efx_init_sriov(void);
 209 extern void efx_sriov_probe(struct efx_nic *efx);
 210 extern int efx_sriov_init(struct efx_nic *efx);
 211 extern void efx_sriov_mac_address_changed(struct efx_nic *efx);
 212 extern void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event);
 213 extern void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event);
 214 extern void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event);
 215 extern void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq);
 216 extern void efx_sriov_flr(struct efx_nic *efx, unsigned flr);
 217 extern void efx_sriov_reset(struct efx_nic *efx);
 218 extern void efx_sriov_fini(struct efx_nic *efx);
 219 extern void efx_fini_sriov(void);
 220
 221 #else
 222
 223 static inline bool efx_sriov_wanted(struct efx_nic *efx) { return false; }
 224 static inline bool efx_sriov_enabled(struct efx_nic *efx) { return false; }
 225 static inline unsigned int efx_vf_size(struct efx_nic *efx) { return 0; }
 226
 227 static inline int efx_init_sriov(void) { return 0; }
 228 static inline void efx_sriov_probe(struct efx_nic *efx) {}
 229 static inline int efx_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
 230 static inline void efx_sriov_mac_address_changed(struct efx_nic *efx) {}
 231 static inline void efx_sriov_tx_flush_done(struct efx_nic *efx,
 232                                            efx_qword_t *event) {}
 233 static inline void efx_sriov_rx_flush_done(struct efx_nic *efx,
 234                                            efx_qword_t *event) {}
 235 static inline void efx_sriov_event(struct efx_channel *channel,
 236                                    efx_qword_t *event) {}
 237 static inline void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq) {}
 238 static inline void efx_sriov_flr(struct efx_nic *efx, unsigned flr) {}
 239 static inline void efx_sriov_reset(struct efx_nic *efx) {}
 240 static inline void efx_sriov_fini(struct efx_nic *efx) {}
 241 static inline void efx_fini_sriov(void) {}
 242
 243 #endif
 244
 245 extern int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac);
 246 extern int efx_sriov_set_vf_vlan(struct net_device *dev, int vf,
 247                                  u16 vlan, u8 qos);
 248 extern int efx_sriov_get_vf_config(struct net_device *dev, int vf,
 249                                    struct ifla_vf_info *ivf);
 250 extern int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf,
 251                                      bool spoofchk);
 252
 253 extern const struct efx_nic_type falcon_a1_nic_type;
 254 extern const struct efx_nic_type falcon_b0_nic_type;
 255 extern const struct efx_nic_type siena_a0_nic_type;
 256
 257 /**************************************************************************
 258  *
 259  * Externs
 260  *
 261  **************************************************************************
 262  */
 263
 264 extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
 265
 266 /* TX data path */
 267 extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue);
 268 extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue);
 269 extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue);
 270 extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue);
 271 extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue);
 272
 273 /* RX data path */
 274 extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue);
 275 extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue);
 276 extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue);
 277 extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue);
 278 extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue);
 279 extern void efx_nic_generate_fill_event(struct efx_rx_queue *rx_queue);
 280
 281 /* Event data path */
 282 extern int efx_nic_probe_eventq(struct efx_channel *channel);
 283 extern void efx_nic_init_eventq(struct efx_channel *channel);
 284 extern void efx_nic_fini_eventq(struct efx_channel *channel);
 285 extern void efx_nic_remove_eventq(struct efx_channel *channel);
 286 extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota);
 287 extern void efx_nic_eventq_read_ack(struct efx_channel *channel);
 288 extern bool efx_nic_event_present(struct efx_channel *channel);
 289
 290 /* MAC/PHY */
 291 extern void falcon_drain_tx_fifo(struct efx_nic *efx);
 292 extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
 293 extern bool falcon_xmac_check_fault(struct efx_nic *efx);
 294 extern int falcon_reconfigure_xmac(struct efx_nic *efx);
 295 extern void falcon_update_stats_xmac(struct efx_nic *efx);
 296
 297 /* Interrupts and test events */
 298 extern int efx_nic_init_interrupt(struct efx_nic *efx);
 299 extern void efx_nic_enable_interrupts(struct efx_nic *efx);
 300 extern void efx_nic_event_test_start(struct efx_channel *channel);
 301 extern void efx_nic_irq_test_start(struct efx_nic *efx);
 302 extern void efx_nic_disable_interrupts(struct efx_nic *efx);
 303 extern void efx_nic_fini_interrupt(struct efx_nic *efx);
 304 extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
 305 extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
 306 extern void falcon_irq_ack_a1(struct efx_nic *efx);
 307
 308 static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel)
 309 {
 310         return ACCESS_ONCE(channel->event_test_cpu);
 311 }
 312 static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx)
 313 {
 314         return ACCESS_ONCE(efx->last_irq_cpu);
 315 }
 316
 317 /* Global Resources */
 318 extern int efx_nic_flush_queues(struct efx_nic *efx);
 319 extern void falcon_start_nic_stats(struct efx_nic *efx);
 320 extern void falcon_stop_nic_stats(struct efx_nic *efx);
 321 extern void falcon_setup_xaui(struct efx_nic *efx);
 322 extern int falcon_reset_xaui(struct efx_nic *efx);
 323 extern void
 324 efx_nic_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw);
 325 extern void efx_nic_init_common(struct efx_nic *efx);
 326 extern void efx_nic_push_rx_indir_table(struct efx_nic *efx);
 327
 328 int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
 329                          unsigned int len);
 330 void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
 331
 332 /* Tests */
 333 struct efx_nic_register_test {
 334         unsigned address;
 335         efx_oword_t mask;
 336 };
 337 extern int efx_nic_test_registers(struct efx_nic *efx,
 338                                   const struct efx_nic_register_test *regs,
 339                                   size_t n_regs);
 340
 341 extern size_t efx_nic_get_regs_len(struct efx_nic *efx);
 342 extern void efx_nic_get_regs(struct efx_nic *efx, void *buf);
 343
 344 /**************************************************************************
 345  *
 346  * Falcon MAC stats
 347  *
 348  **************************************************************************
 349  */
 350
 351 #define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
 352 #define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
 353
 354 /* Retrieve statistic from statistics block */
 355 #define FALCON_STAT(efx, falcon_stat, efx_stat) do {            \
 356         if (FALCON_STAT_WIDTH(falcon_stat) == 16)               \
 357                 (efx)->mac_stats.efx_stat += le16_to_cpu(       \
 358                         *((__force __le16 *)                            \
 359                           (efx->stats_buffer.addr +             \
 360                            FALCON_STAT_OFFSET(falcon_stat))));  \
 361         else if (FALCON_STAT_WIDTH(falcon_stat) == 32)          \
 362                 (efx)->mac_stats.efx_stat += le32_to_cpu(       \
 363                         *((__force __le32 *)                            \
 364                           (efx->stats_buffer.addr +             \
 365                            FALCON_STAT_OFFSET(falcon_stat))));  \
 366         else                                                    \
 367                 (efx)->mac_stats.efx_stat += le64_to_cpu(       \
 368                         *((__force __le64 *)                            \
 369                           (efx->stats_buffer.addr +             \
 370                            FALCON_STAT_OFFSET(falcon_stat))));  \
 371         } while (0)
 372
 373 #define FALCON_MAC_STATS_SIZE 0x100
 374
 375 #define MAC_DATA_LBN 0
 376 #define MAC_DATA_WIDTH 32
 377
 378 extern void efx_generate_event(struct efx_nic *efx, unsigned int evq,
 379                                efx_qword_t *event);
 380
 381 extern void falcon_poll_xmac(struct efx_nic *efx);
 382
 383 #endif /* EFX_NIC_H */