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/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
* Copyright 2006-2011 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#ifndef EFX_NIC_H
#define EFX_NIC_H
#include <linux/i2c-algo-bit.h>
#include "net_driver.h"
#include "efx.h"
#include "mcdi.h"
#include "spi.h"
/*
* Falcon hardware control
*/
enum {
EFX_REV_FALCON_A0 = 0,
EFX_REV_FALCON_A1 = 1,
EFX_REV_FALCON_B0 = 2,
EFX_REV_SIENA_A0 = 3,
};
static inline int efx_nic_rev(struct efx_nic *efx)
{
return efx->type->revision;
}
extern u32 efx_nic_fpga_ver(struct efx_nic *efx);
static inline bool efx_nic_has_mc(struct efx_nic *efx)
{
return efx_nic_rev(efx) >= EFX_REV_SIENA_A0;
}
/* NIC has two interlinked PCI functions for the same port. */
static inline bool efx_nic_is_dual_func(struct efx_nic *efx)
{
return efx_nic_rev(efx) < EFX_REV_FALCON_B0;
}
enum {
PHY_TYPE_NONE = 0,
PHY_TYPE_TXC43128 = 1,
PHY_TYPE_88E1111 = 2,
PHY_TYPE_SFX7101 = 3,
PHY_TYPE_QT2022C2 = 4,
PHY_TYPE_PM8358 = 6,
PHY_TYPE_SFT9001A = 8,
PHY_TYPE_QT2025C = 9,
PHY_TYPE_SFT9001B = 10,
};
#define FALCON_XMAC_LOOPBACKS \
((1 << LOOPBACK_XGMII) | \
(1 << LOOPBACK_XGXS) | \
(1 << LOOPBACK_XAUI))
#define FALCON_GMAC_LOOPBACKS \
(1 << LOOPBACK_GMAC)
/**
* struct falcon_board_type - board operations and type information
* @id: Board type id, as found in NVRAM
* @ref_model: Model number of Solarflare reference design
* @gen_type: Generic board type description
* @init: Allocate resources and initialise peripheral hardware
* @init_phy: Do board-specific PHY initialisation
* @fini: Shut down hardware and free resources
* @set_id_led: Set state of identifying LED or revert to automatic function
* @monitor: Board-specific health check function
*/
struct falcon_board_type {
u8 id;
const char *ref_model;
const char *gen_type;
int (*init) (struct efx_nic *nic);
void (*init_phy) (struct efx_nic *efx);
void (*fini) (struct efx_nic *nic);
void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
int (*monitor) (struct efx_nic *nic);
};
/**
* struct falcon_board - board information
* @type: Type of board
* @major: Major rev. ('A', 'B' ...)
* @minor: Minor rev. (0, 1, ...)
* @i2c_adap: I2C adapter for on-board peripherals
* @i2c_data: Data for bit-banging algorithm
* @hwmon_client: I2C client for hardware monitor
* @ioexp_client: I2C client for power/port control
*/
struct falcon_board {
const struct falcon_board_type *type;
int major;
int minor;
struct i2c_adapter i2c_adap;
struct i2c_algo_bit_data i2c_data;
struct i2c_client *hwmon_client, *ioexp_client;
};
/**
* struct falcon_nic_data - Falcon NIC state
* @pci_dev2: Secondary function of Falcon A
* @board: Board state and functions
* @stats_disable_count: Nest count for disabling statistics fetches
* @stats_pending: Is there a pending DMA of MAC statistics.
* @stats_timer: A timer for regularly fetching MAC statistics.
* @stats_dma_done: Pointer to the flag which indicates DMA completion.
* @spi_flash: SPI flash device
* @spi_eeprom: SPI EEPROM device
* @spi_lock: SPI bus lock
* @mdio_lock: MDIO bus lock
* @xmac_poll_required: XMAC link state needs polling
*/
struct falcon_nic_data {
struct pci_dev *pci_dev2;
struct falcon_board board;
unsigned int stats_disable_count;
bool stats_pending;
struct timer_list stats_timer;
u32 *stats_dma_done;
struct efx_spi_device spi_flash;
struct efx_spi_device spi_eeprom;
struct mutex spi_lock;
struct mutex mdio_lock;
bool xmac_poll_required;
};
static inline struct falcon_board *falcon_board(struct efx_nic *efx)
{
struct falcon_nic_data *data = efx->nic_data;
return &data->board;
}
/**
* struct siena_nic_data - Siena NIC state
* @mcdi: Management-Controller-to-Driver Interface
* @mcdi_smem: MCDI shared memory mapping. The mapping is always uncacheable.
* @wol_filter_id: Wake-on-LAN packet filter id
*/
struct siena_nic_data {
struct efx_mcdi_iface mcdi;
void __iomem *mcdi_smem;
int wol_filter_id;
};
extern const struct efx_nic_type falcon_a1_nic_type;
extern const struct efx_nic_type falcon_b0_nic_type;
extern const struct efx_nic_type siena_a0_nic_type;
/**************************************************************************
*
* Externs
*
**************************************************************************
*/
extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
/* TX data path */
extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue);
extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue);
extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue);
extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue);
extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue);
/* RX data path */
extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue);
extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue);
extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue);
extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue);
extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue);
/* Event data path */
extern int efx_nic_probe_eventq(struct efx_channel *channel);
extern void efx_nic_init_eventq(struct efx_channel *channel);
extern void efx_nic_fini_eventq(struct efx_channel *channel);
extern void efx_nic_remove_eventq(struct efx_channel *channel);
extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota);
extern void efx_nic_eventq_read_ack(struct efx_channel *channel);
extern bool efx_nic_event_present(struct efx_channel *channel);
/* MAC/PHY */
extern void falcon_drain_tx_fifo(struct efx_nic *efx);
extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
/* Interrupts and test events */
extern int efx_nic_init_interrupt(struct efx_nic *efx);
extern void efx_nic_enable_interrupts(struct efx_nic *efx);
extern void efx_nic_generate_test_event(struct efx_channel *channel);
extern void efx_nic_generate_fill_event(struct efx_channel *channel);
extern void efx_nic_generate_interrupt(struct efx_nic *efx);
extern void efx_nic_disable_interrupts(struct efx_nic *efx);
extern void efx_nic_fini_interrupt(struct efx_nic *efx);
extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
extern void falcon_irq_ack_a1(struct efx_nic *efx);
#define EFX_IRQ_MOD_RESOLUTION 5
#define EFX_IRQ_MOD_MAX 0x1000
/* Global Resources */
extern int efx_nic_flush_queues(struct efx_nic *efx);
extern void falcon_start_nic_stats(struct efx_nic *efx);
extern void falcon_stop_nic_stats(struct efx_nic *efx);
extern void falcon_setup_xaui(struct efx_nic *efx);
extern int falcon_reset_xaui(struct efx_nic *efx);
extern void efx_nic_init_common(struct efx_nic *efx);
extern void efx_nic_push_rx_indir_table(struct efx_nic *efx);
int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
unsigned int len);
void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
/* Tests */
struct efx_nic_register_test {
unsigned address;
efx_oword_t mask;
};
extern int efx_nic_test_registers(struct efx_nic *efx,
const struct efx_nic_register_test *regs,
size_t n_regs);
extern size_t efx_nic_get_regs_len(struct efx_nic *efx);
extern void efx_nic_get_regs(struct efx_nic *efx, void *buf);
/**************************************************************************
*
* Falcon MAC stats
*
**************************************************************************
*/
#define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
#define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
/* Retrieve statistic from statistics block */
#define FALCON_STAT(efx, falcon_stat, efx_stat) do { \
if (FALCON_STAT_WIDTH(falcon_stat) == 16) \
(efx)->mac_stats.efx_stat += le16_to_cpu( \
*((__force __le16 *) \
(efx->stats_buffer.addr + \
FALCON_STAT_OFFSET(falcon_stat)))); \
else if (FALCON_STAT_WIDTH(falcon_stat) == 32) \
(efx)->mac_stats.efx_stat += le32_to_cpu( \
*((__force __le32 *) \
(efx->stats_buffer.addr + \
FALCON_STAT_OFFSET(falcon_stat)))); \
else \
(efx)->mac_stats.efx_stat += le64_to_cpu( \
*((__force __le64 *) \
(efx->stats_buffer.addr + \
FALCON_STAT_OFFSET(falcon_stat)))); \
} while (0)
#define FALCON_MAC_STATS_SIZE 0x100
#define MAC_DATA_LBN 0
#define MAC_DATA_WIDTH 32
extern void efx_nic_generate_event(struct efx_channel *channel,
efx_qword_t *event);
extern void falcon_poll_xmac(struct efx_nic *efx);
#endif /* EFX_NIC_H */
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