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linux_dsm_epyc7002/drivers/net/ethernet/sfc/nic.h
Edward Cree e283546c04 sfc:On MCDI timeout, issue an FLR (and mark MCDI to fail-fast) 
When an MCDI command times out (whether or not we find it
completed when we poll), call efx_mcdi_abandon(), which tells
all subsequent MCDI calls to fail-fast, and queues up an FLR.

Because an FLR doesn't lead to receiving any reboot even from
the MC (unlike most other types of reset), we have to call
efx_ef10_reset_mc_allocations.
In efx_start_all(), if a reset (of any kind) is pending, we
bail out.
Without this, attempts to reconfigure (e.g. change mtu) can
cause driver/mc state inconsistency if the first MCDI call
triggers an FLR.

For similar reasons, on EF10, in
efx_reset_down(method=RESET_TYPE_MCDI_TIMEOUT), set the number
of active queues to zero before calling efx_stop_all().
And, on farch, in efx_reset_up(method=RESET_TYPE_MCDI_TIMEOUT),
set active_queues and flushes pending & outstanding to zero.

efx_mcdi_mode_{poll,event}() should not take us out of fail-fast
 mode. Instead, this is done by efx_mcdi_reset() after the FLR
completes.

The new FLR reset_type RESET_TYPE_MCDI_TIMEOUT doesn't really
fit into the hierarchy of reset 'scopes' whereby efx_reset()
decides some resets subsume others.  Thus, it uses separate logic.

Also, fixed up some inconsistency around RESET_TYPE_MC_BIST,
which was in the wrong place in that hierarchy.

Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-04-16 14:33:57 -04:00

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/****************************************************************************
* Driver for Solarflare network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
* Copyright 2006-2013 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/net_tstamp.h>
#include <linux/i2c-algo-bit.h>
#include "net_driver.h"
#include "efx.h"
#include "mcdi.h"
enum {
EFX_REV_FALCON_A0 = 0,
EFX_REV_FALCON_A1 = 1,
EFX_REV_FALCON_B0 = 2,
EFX_REV_SIENA_A0 = 3,
EFX_REV_HUNT_A0 = 4,
};
static inline int efx_nic_rev(struct efx_nic *efx)
{
return efx->type->revision;
}
u32 efx_farch_fpga_ver(struct efx_nic *efx);
/* 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;
}
/* Read the current event from the event queue */
static inline efx_qword_t *efx_event(struct efx_channel *channel,
unsigned int index)
{
return ((efx_qword_t *) (channel->eventq.buf.addr)) +
(index & channel->eventq_mask);
}
/* See if an event is present
*
* We check both the high and low dword of the event for all ones. We
* wrote all ones when we cleared the event, and no valid event can
* have all ones in either its high or low dwords. This approach is
* robust against reordering.
*
* Note that using a single 64-bit comparison is incorrect; even
* though the CPU read will be atomic, the DMA write may not be.
*/
static inline int efx_event_present(efx_qword_t *event)
{
return !(EFX_DWORD_IS_ALL_ONES(event->dword[0]) |
EFX_DWORD_IS_ALL_ONES(event->dword[1]));
}
/* Returns a pointer to the specified transmit descriptor in the TX
* descriptor queue belonging to the specified channel.
*/
static inline efx_qword_t *
efx_tx_desc(struct efx_tx_queue *tx_queue, unsigned int index)
{
return ((efx_qword_t *) (tx_queue->txd.buf.addr)) + index;
}
/* Report whether the NIC considers this TX queue empty, given the
* write_count used for the last doorbell push. May return false
* negative.
*/
static inline bool __efx_nic_tx_is_empty(struct efx_tx_queue *tx_queue,
unsigned int write_count)
{
unsigned int empty_read_count = ACCESS_ONCE(tx_queue->empty_read_count);
if (empty_read_count == 0)
return false;
return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0;
}
static inline bool efx_nic_tx_is_empty(struct efx_tx_queue *tx_queue)
{
return __efx_nic_tx_is_empty(tx_queue, tx_queue->write_count);
}
/* Decide whether to push a TX descriptor to the NIC vs merely writing
* the doorbell. This can reduce latency when we are adding a single
* descriptor to an empty queue, but is otherwise pointless. Further,
* Falcon and Siena have hardware bugs (SF bug 33851) that may be
* triggered if we don't check this.
*/
static inline bool efx_nic_may_push_tx_desc(struct efx_tx_queue *tx_queue,
unsigned int write_count)
{
bool was_empty = __efx_nic_tx_is_empty(tx_queue, write_count);
tx_queue->empty_read_count = 0;
return was_empty && tx_queue->write_count - write_count == 1;
}
/* Returns a pointer to the specified descriptor in the RX descriptor queue */
static inline efx_qword_t *
efx_rx_desc(struct efx_rx_queue *rx_queue, unsigned int index)
{
return ((efx_qword_t *) (rx_queue->rxd.buf.addr)) + index;
}
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))
/* Alignment of PCIe DMA boundaries (4KB) */
#define EFX_PAGE_SIZE 4096
/* Size and alignment of buffer table entries (same) */
#define EFX_BUF_SIZE EFX_PAGE_SIZE
/**
* struct falcon_board_type - board operations and type information
* @id: Board type id, as found in NVRAM
* @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;
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_spi_device - a Falcon SPI (Serial Peripheral Interface) device
* @device_id: Controller's id for the device
* @size: Size (in bytes)
* @addr_len: Number of address bytes in read/write commands
* @munge_address: Flag whether addresses should be munged.
* Some devices with 9-bit addresses (e.g. AT25040A EEPROM)
* use bit 3 of the command byte as address bit A8, rather
* than having a two-byte address. If this flag is set, then
* commands should be munged in this way.
* @erase_command: Erase command (or 0 if sector erase not needed).
* @erase_size: Erase sector size (in bytes)
* Erase commands affect sectors with this size and alignment.
* This must be a power of two.
* @block_size: Write block size (in bytes).
* Write commands are limited to blocks with this size and alignment.
*/
struct falcon_spi_device {
int device_id;
unsigned int size;
unsigned int addr_len;
unsigned int munge_address:1;
u8 erase_command;
unsigned int erase_size;
unsigned int block_size;
};
static inline bool falcon_spi_present(const struct falcon_spi_device *spi)
{
return spi->size != 0;
}
enum {
FALCON_STAT_tx_bytes,
FALCON_STAT_tx_packets,
FALCON_STAT_tx_pause,
FALCON_STAT_tx_control,
FALCON_STAT_tx_unicast,
FALCON_STAT_tx_multicast,
FALCON_STAT_tx_broadcast,
FALCON_STAT_tx_lt64,
FALCON_STAT_tx_64,
FALCON_STAT_tx_65_to_127,
FALCON_STAT_tx_128_to_255,
FALCON_STAT_tx_256_to_511,
FALCON_STAT_tx_512_to_1023,
FALCON_STAT_tx_1024_to_15xx,
FALCON_STAT_tx_15xx_to_jumbo,
FALCON_STAT_tx_gtjumbo,
FALCON_STAT_tx_non_tcpudp,
FALCON_STAT_tx_mac_src_error,
FALCON_STAT_tx_ip_src_error,
FALCON_STAT_rx_bytes,
FALCON_STAT_rx_good_bytes,
FALCON_STAT_rx_bad_bytes,
FALCON_STAT_rx_packets,
FALCON_STAT_rx_good,
FALCON_STAT_rx_bad,
FALCON_STAT_rx_pause,
FALCON_STAT_rx_control,
FALCON_STAT_rx_unicast,
FALCON_STAT_rx_multicast,
FALCON_STAT_rx_broadcast,
FALCON_STAT_rx_lt64,
FALCON_STAT_rx_64,
FALCON_STAT_rx_65_to_127,
FALCON_STAT_rx_128_to_255,
FALCON_STAT_rx_256_to_511,
FALCON_STAT_rx_512_to_1023,
FALCON_STAT_rx_1024_to_15xx,
FALCON_STAT_rx_15xx_to_jumbo,
FALCON_STAT_rx_gtjumbo,
FALCON_STAT_rx_bad_lt64,
FALCON_STAT_rx_bad_gtjumbo,
FALCON_STAT_rx_overflow,
FALCON_STAT_rx_symbol_error,
FALCON_STAT_rx_align_error,
FALCON_STAT_rx_length_error,
FALCON_STAT_rx_internal_error,
FALCON_STAT_rx_nodesc_drop_cnt,
FALCON_STAT_COUNT
};
/**
* struct falcon_nic_data - Falcon NIC state
* @pci_dev2: Secondary function of Falcon A
* @board: Board state and functions
* @stats: Hardware statistics
* @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.
* @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;
u64 stats[FALCON_STAT_COUNT];
unsigned int stats_disable_count;
bool stats_pending;
struct timer_list stats_timer;
struct falcon_spi_device spi_flash;
struct falcon_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;
}
enum {
SIENA_STAT_tx_bytes,
SIENA_STAT_tx_good_bytes,
SIENA_STAT_tx_bad_bytes,
SIENA_STAT_tx_packets,
SIENA_STAT_tx_bad,
SIENA_STAT_tx_pause,
SIENA_STAT_tx_control,
SIENA_STAT_tx_unicast,
SIENA_STAT_tx_multicast,
SIENA_STAT_tx_broadcast,
SIENA_STAT_tx_lt64,
SIENA_STAT_tx_64,
SIENA_STAT_tx_65_to_127,
SIENA_STAT_tx_128_to_255,
SIENA_STAT_tx_256_to_511,
SIENA_STAT_tx_512_to_1023,
SIENA_STAT_tx_1024_to_15xx,
SIENA_STAT_tx_15xx_to_jumbo,
SIENA_STAT_tx_gtjumbo,
SIENA_STAT_tx_collision,
SIENA_STAT_tx_single_collision,
SIENA_STAT_tx_multiple_collision,
SIENA_STAT_tx_excessive_collision,
SIENA_STAT_tx_deferred,
SIENA_STAT_tx_late_collision,
SIENA_STAT_tx_excessive_deferred,
SIENA_STAT_tx_non_tcpudp,
SIENA_STAT_tx_mac_src_error,
SIENA_STAT_tx_ip_src_error,
SIENA_STAT_rx_bytes,
SIENA_STAT_rx_good_bytes,
SIENA_STAT_rx_bad_bytes,
SIENA_STAT_rx_packets,
SIENA_STAT_rx_good,
SIENA_STAT_rx_bad,
SIENA_STAT_rx_pause,
SIENA_STAT_rx_control,
SIENA_STAT_rx_unicast,
SIENA_STAT_rx_multicast,
SIENA_STAT_rx_broadcast,
SIENA_STAT_rx_lt64,
SIENA_STAT_rx_64,
SIENA_STAT_rx_65_to_127,
SIENA_STAT_rx_128_to_255,
SIENA_STAT_rx_256_to_511,
SIENA_STAT_rx_512_to_1023,
SIENA_STAT_rx_1024_to_15xx,
SIENA_STAT_rx_15xx_to_jumbo,
SIENA_STAT_rx_gtjumbo,
SIENA_STAT_rx_bad_gtjumbo,
SIENA_STAT_rx_overflow,
SIENA_STAT_rx_false_carrier,
SIENA_STAT_rx_symbol_error,
SIENA_STAT_rx_align_error,
SIENA_STAT_rx_length_error,
SIENA_STAT_rx_internal_error,
SIENA_STAT_rx_nodesc_drop_cnt,
SIENA_STAT_COUNT
};
/**
* struct siena_nic_data - Siena NIC state
* @wol_filter_id: Wake-on-LAN packet filter id
* @stats: Hardware statistics
*/
struct siena_nic_data {
int wol_filter_id;
u64 stats[SIENA_STAT_COUNT];
};
enum {
EF10_STAT_tx_bytes,
EF10_STAT_tx_packets,
EF10_STAT_tx_pause,
EF10_STAT_tx_control,
EF10_STAT_tx_unicast,
EF10_STAT_tx_multicast,
EF10_STAT_tx_broadcast,
EF10_STAT_tx_lt64,
EF10_STAT_tx_64,
EF10_STAT_tx_65_to_127,
EF10_STAT_tx_128_to_255,
EF10_STAT_tx_256_to_511,
EF10_STAT_tx_512_to_1023,
EF10_STAT_tx_1024_to_15xx,
EF10_STAT_tx_15xx_to_jumbo,
EF10_STAT_rx_bytes,
EF10_STAT_rx_bytes_minus_good_bytes,
EF10_STAT_rx_good_bytes,
EF10_STAT_rx_bad_bytes,
EF10_STAT_rx_packets,
EF10_STAT_rx_good,
EF10_STAT_rx_bad,
EF10_STAT_rx_pause,
EF10_STAT_rx_control,
EF10_STAT_rx_unicast,
EF10_STAT_rx_multicast,
EF10_STAT_rx_broadcast,
EF10_STAT_rx_lt64,
EF10_STAT_rx_64,
EF10_STAT_rx_65_to_127,
EF10_STAT_rx_128_to_255,
EF10_STAT_rx_256_to_511,
EF10_STAT_rx_512_to_1023,
EF10_STAT_rx_1024_to_15xx,
EF10_STAT_rx_15xx_to_jumbo,
EF10_STAT_rx_gtjumbo,
EF10_STAT_rx_bad_gtjumbo,
EF10_STAT_rx_overflow,
EF10_STAT_rx_align_error,
EF10_STAT_rx_length_error,
EF10_STAT_rx_nodesc_drops,
EF10_STAT_rx_pm_trunc_bb_overflow,
EF10_STAT_rx_pm_discard_bb_overflow,
EF10_STAT_rx_pm_trunc_vfifo_full,
EF10_STAT_rx_pm_discard_vfifo_full,
EF10_STAT_rx_pm_trunc_qbb,
EF10_STAT_rx_pm_discard_qbb,
EF10_STAT_rx_pm_discard_mapping,
EF10_STAT_rx_dp_q_disabled_packets,
EF10_STAT_rx_dp_di_dropped_packets,
EF10_STAT_rx_dp_streaming_packets,
EF10_STAT_rx_dp_hlb_fetch,
EF10_STAT_rx_dp_hlb_wait,
EF10_STAT_COUNT
};
/* Maximum number of TX PIO buffers we may allocate to a function.
* This matches the total number of buffers on each SFC9100-family
* controller.
*/
#define EF10_TX_PIOBUF_COUNT 16
/**
* struct efx_ef10_nic_data - EF10 architecture NIC state
* @mcdi_buf: DMA buffer for MCDI
* @warm_boot_count: Last seen MC warm boot count
* @vi_base: Absolute index of first VI in this function
* @n_allocated_vis: Number of VIs allocated to this function
* @must_realloc_vis: Flag: VIs have yet to be reallocated after MC reboot
* @must_restore_filters: Flag: filters have yet to be restored after MC reboot
* @n_piobufs: Number of PIO buffers allocated to this function
* @wc_membase: Base address of write-combining mapping of the memory BAR
* @pio_write_base: Base address for writing PIO buffers
* @pio_write_vi_base: Relative VI number for @pio_write_base
* @piobuf_handle: Handle of each PIO buffer allocated
* @must_restore_piobufs: Flag: PIO buffers have yet to be restored after MC
* reboot
* @rx_rss_context: Firmware handle for our RSS context
* @stats: Hardware statistics
* @workaround_35388: Flag: firmware supports workaround for bug 35388
* @must_check_datapath_caps: Flag: @datapath_caps needs to be revalidated
* after MC reboot
* @datapath_caps: Capabilities of datapath firmware (FLAGS1 field of
* %MC_CMD_GET_CAPABILITIES response)
*/
struct efx_ef10_nic_data {
struct efx_buffer mcdi_buf;
u16 warm_boot_count;
unsigned int vi_base;
unsigned int n_allocated_vis;
bool must_realloc_vis;
bool must_restore_filters;
unsigned int n_piobufs;
void __iomem *wc_membase, *pio_write_base;
unsigned int pio_write_vi_base;
unsigned int piobuf_handle[EF10_TX_PIOBUF_COUNT];
bool must_restore_piobufs;
u32 rx_rss_context;
u64 stats[EF10_STAT_COUNT];
bool workaround_35388;
bool must_check_datapath_caps;
u32 datapath_caps;
};
/*
* On the SFC9000 family each port is associated with 1 PCI physical
* function (PF) handled by sfc and a configurable number of virtual
* functions (VFs) that may be handled by some other driver, often in
* a VM guest. The queue pointer registers are mapped in both PF and
* VF BARs such that an 8K region provides access to a single RX, TX
* and event queue (collectively a Virtual Interface, VI or VNIC).
*
* The PF has access to all 1024 VIs while VFs are mapped to VIs
* according to VI_BASE and VI_SCALE: VF i has access to VIs numbered
* in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE).
* The number of VIs and the VI_SCALE value are configurable but must
* be established at boot time by firmware.
*/
/* Maximum VI_SCALE parameter supported by Siena */
#define EFX_VI_SCALE_MAX 6
/* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX),
* so this is the smallest allowed value. */
#define EFX_VI_BASE 128U
/* Maximum number of VFs allowed */
#define EFX_VF_COUNT_MAX 127
/* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */
#define EFX_MAX_VF_EVQ_SIZE 8192UL
/* The number of buffer table entries reserved for each VI on a VF */
#define EFX_VF_BUFTBL_PER_VI \
((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) * \
sizeof(efx_qword_t) / EFX_BUF_SIZE)
#ifdef CONFIG_SFC_SRIOV
static inline bool efx_sriov_wanted(struct efx_nic *efx)
{
return efx->vf_count != 0;
}
static inline bool efx_sriov_enabled(struct efx_nic *efx)
{
return efx->vf_init_count != 0;
}
static inline unsigned int efx_vf_size(struct efx_nic *efx)
{
return 1 << efx->vi_scale;
}
int efx_init_sriov(void);
void efx_sriov_probe(struct efx_nic *efx);
int efx_sriov_init(struct efx_nic *efx);
void efx_sriov_mac_address_changed(struct efx_nic *efx);
void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event);
void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event);
void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event);
void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq);
void efx_sriov_flr(struct efx_nic *efx, unsigned flr);
void efx_sriov_reset(struct efx_nic *efx);
void efx_sriov_fini(struct efx_nic *efx);
void efx_fini_sriov(void);
#else
static inline bool efx_sriov_wanted(struct efx_nic *efx) { return false; }
static inline bool efx_sriov_enabled(struct efx_nic *efx) { return false; }
static inline unsigned int efx_vf_size(struct efx_nic *efx) { return 0; }
static inline int efx_init_sriov(void) { return 0; }
static inline void efx_sriov_probe(struct efx_nic *efx) {}
static inline int efx_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
static inline void efx_sriov_mac_address_changed(struct efx_nic *efx) {}
static inline void efx_sriov_tx_flush_done(struct efx_nic *efx,
efx_qword_t *event) {}
static inline void efx_sriov_rx_flush_done(struct efx_nic *efx,
efx_qword_t *event) {}
static inline void efx_sriov_event(struct efx_channel *channel,
efx_qword_t *event) {}
static inline void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq) {}
static inline void efx_sriov_flr(struct efx_nic *efx, unsigned flr) {}
static inline void efx_sriov_reset(struct efx_nic *efx) {}
static inline void efx_sriov_fini(struct efx_nic *efx) {}
static inline void efx_fini_sriov(void) {}
#endif
int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac);
int efx_sriov_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos);
int efx_sriov_get_vf_config(struct net_device *dev, int vf,
struct ifla_vf_info *ivf);
int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf,
bool spoofchk);
struct ethtool_ts_info;
int efx_ptp_probe(struct efx_nic *efx, struct efx_channel *channel);
void efx_ptp_defer_probe_with_channel(struct efx_nic *efx);
void efx_ptp_remove(struct efx_nic *efx);
int efx_ptp_set_ts_config(struct efx_nic *efx, struct ifreq *ifr);
int efx_ptp_get_ts_config(struct efx_nic *efx, struct ifreq *ifr);
void efx_ptp_get_ts_info(struct efx_nic *efx, struct ethtool_ts_info *ts_info);
bool efx_ptp_is_ptp_tx(struct efx_nic *efx, struct sk_buff *skb);
int efx_ptp_get_mode(struct efx_nic *efx);
int efx_ptp_change_mode(struct efx_nic *efx, bool enable_wanted,
unsigned int new_mode);
int efx_ptp_tx(struct efx_nic *efx, struct sk_buff *skb);
void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev);
size_t efx_ptp_describe_stats(struct efx_nic *efx, u8 *strings);
size_t efx_ptp_update_stats(struct efx_nic *efx, u64 *stats);
void efx_time_sync_event(struct efx_channel *channel, efx_qword_t *ev);
void __efx_rx_skb_attach_timestamp(struct efx_channel *channel,
struct sk_buff *skb);
static inline void efx_rx_skb_attach_timestamp(struct efx_channel *channel,
struct sk_buff *skb)
{
if (channel->sync_events_state == SYNC_EVENTS_VALID)
__efx_rx_skb_attach_timestamp(channel, skb);
}
void efx_ptp_start_datapath(struct efx_nic *efx);
void efx_ptp_stop_datapath(struct efx_nic *efx);
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;
extern const struct efx_nic_type efx_hunt_a0_nic_type;
/**************************************************************************
*
* Externs
*
**************************************************************************
*/
int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
/* TX data path */
static inline int efx_nic_probe_tx(struct efx_tx_queue *tx_queue)
{
return tx_queue->efx->type->tx_probe(tx_queue);
}
static inline void efx_nic_init_tx(struct efx_tx_queue *tx_queue)
{
tx_queue->efx->type->tx_init(tx_queue);
}
static inline void efx_nic_remove_tx(struct efx_tx_queue *tx_queue)
{
tx_queue->efx->type->tx_remove(tx_queue);
}
static inline void efx_nic_push_buffers(struct efx_tx_queue *tx_queue)
{
tx_queue->efx->type->tx_write(tx_queue);
}
/* RX data path */
static inline int efx_nic_probe_rx(struct efx_rx_queue *rx_queue)
{
return rx_queue->efx->type->rx_probe(rx_queue);
}
static inline void efx_nic_init_rx(struct efx_rx_queue *rx_queue)
{
rx_queue->efx->type->rx_init(rx_queue);
}
static inline void efx_nic_remove_rx(struct efx_rx_queue *rx_queue)
{
rx_queue->efx->type->rx_remove(rx_queue);
}
static inline void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue)
{
rx_queue->efx->type->rx_write(rx_queue);
}
static inline void efx_nic_generate_fill_event(struct efx_rx_queue *rx_queue)
{
rx_queue->efx->type->rx_defer_refill(rx_queue);
}
/* Event data path */
static inline int efx_nic_probe_eventq(struct efx_channel *channel)
{
return channel->efx->type->ev_probe(channel);
}
static inline int efx_nic_init_eventq(struct efx_channel *channel)
{
return channel->efx->type->ev_init(channel);
}
static inline void efx_nic_fini_eventq(struct efx_channel *channel)
{
channel->efx->type->ev_fini(channel);
}
static inline void efx_nic_remove_eventq(struct efx_channel *channel)
{
channel->efx->type->ev_remove(channel);
}
static inline int
efx_nic_process_eventq(struct efx_channel *channel, int quota)
{
return channel->efx->type->ev_process(channel, quota);
}
static inline void efx_nic_eventq_read_ack(struct efx_channel *channel)
{
channel->efx->type->ev_read_ack(channel);
}
void efx_nic_event_test_start(struct efx_channel *channel);
/* Falcon/Siena queue operations */
int efx_farch_tx_probe(struct efx_tx_queue *tx_queue);
void efx_farch_tx_init(struct efx_tx_queue *tx_queue);
void efx_farch_tx_fini(struct efx_tx_queue *tx_queue);
void efx_farch_tx_remove(struct efx_tx_queue *tx_queue);
void efx_farch_tx_write(struct efx_tx_queue *tx_queue);
int efx_farch_rx_probe(struct efx_rx_queue *rx_queue);
void efx_farch_rx_init(struct efx_rx_queue *rx_queue);
void efx_farch_rx_fini(struct efx_rx_queue *rx_queue);
void efx_farch_rx_remove(struct efx_rx_queue *rx_queue);
void efx_farch_rx_write(struct efx_rx_queue *rx_queue);
void efx_farch_rx_defer_refill(struct efx_rx_queue *rx_queue);
int efx_farch_ev_probe(struct efx_channel *channel);
int efx_farch_ev_init(struct efx_channel *channel);
void efx_farch_ev_fini(struct efx_channel *channel);
void efx_farch_ev_remove(struct efx_channel *channel);
int efx_farch_ev_process(struct efx_channel *channel, int quota);
void efx_farch_ev_read_ack(struct efx_channel *channel);
void efx_farch_ev_test_generate(struct efx_channel *channel);
/* Falcon/Siena filter operations */
int efx_farch_filter_table_probe(struct efx_nic *efx);
void efx_farch_filter_table_restore(struct efx_nic *efx);
void efx_farch_filter_table_remove(struct efx_nic *efx);
void efx_farch_filter_update_rx_scatter(struct efx_nic *efx);
s32 efx_farch_filter_insert(struct efx_nic *efx, struct efx_filter_spec *spec,
bool replace);
int efx_farch_filter_remove_safe(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 filter_id);
int efx_farch_filter_get_safe(struct efx_nic *efx,
enum efx_filter_priority priority, u32 filter_id,
struct efx_filter_spec *);
int efx_farch_filter_clear_rx(struct efx_nic *efx,
enum efx_filter_priority priority);
u32 efx_farch_filter_count_rx_used(struct efx_nic *efx,
enum efx_filter_priority priority);
u32 efx_farch_filter_get_rx_id_limit(struct efx_nic *efx);
s32 efx_farch_filter_get_rx_ids(struct efx_nic *efx,
enum efx_filter_priority priority, u32 *buf,
u32 size);
#ifdef CONFIG_RFS_ACCEL
s32 efx_farch_filter_rfs_insert(struct efx_nic *efx,
struct efx_filter_spec *spec);
bool efx_farch_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id,
unsigned int index);
#endif
void efx_farch_filter_sync_rx_mode(struct efx_nic *efx);
bool efx_nic_event_present(struct efx_channel *channel);
/* Some statistics are computed as A - B where A and B each increase
* linearly with some hardware counter(s) and the counters are read
* asynchronously. If the counters contributing to B are always read
* after those contributing to A, the computed value may be lower than
* the true value by some variable amount, and may decrease between
* subsequent computations.
*
* We should never allow statistics to decrease or to exceed the true
* value. Since the computed value will never be greater than the
* true value, we can achieve this by only storing the computed value
* when it increases.
*/
static inline void efx_update_diff_stat(u64 *stat, u64 diff)
{
if ((s64)(diff - *stat) > 0)
*stat = diff;
}
/* Interrupts */
int efx_nic_init_interrupt(struct efx_nic *efx);
void efx_nic_irq_test_start(struct efx_nic *efx);
void efx_nic_fini_interrupt(struct efx_nic *efx);
/* Falcon/Siena interrupts */
void efx_farch_irq_enable_master(struct efx_nic *efx);
void efx_farch_irq_test_generate(struct efx_nic *efx);
void efx_farch_irq_disable_master(struct efx_nic *efx);
irqreturn_t efx_farch_msi_interrupt(int irq, void *dev_id);
irqreturn_t efx_farch_legacy_interrupt(int irq, void *dev_id);
irqreturn_t efx_farch_fatal_interrupt(struct efx_nic *efx);
static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel)
{
return ACCESS_ONCE(channel->event_test_cpu);
}
static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx)
{
return ACCESS_ONCE(efx->last_irq_cpu);
}
/* Global Resources */
int efx_nic_flush_queues(struct efx_nic *efx);
void siena_prepare_flush(struct efx_nic *efx);
int efx_farch_fini_dmaq(struct efx_nic *efx);
void efx_farch_finish_flr(struct efx_nic *efx);
void siena_finish_flush(struct efx_nic *efx);
void falcon_start_nic_stats(struct efx_nic *efx);
void falcon_stop_nic_stats(struct efx_nic *efx);
int falcon_reset_xaui(struct efx_nic *efx);
void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw);
void efx_farch_init_common(struct efx_nic *efx);
void efx_ef10_handle_drain_event(struct efx_nic *efx);
void efx_farch_rx_push_indir_table(struct efx_nic *efx);
int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
unsigned int len, gfp_t gfp_flags);
void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
/* Tests */
struct efx_farch_register_test {
unsigned address;
efx_oword_t mask;
};
int efx_farch_test_registers(struct efx_nic *efx,
const struct efx_farch_register_test *regs,
size_t n_regs);
size_t efx_nic_get_regs_len(struct efx_nic *efx);
void efx_nic_get_regs(struct efx_nic *efx, void *buf);
size_t efx_nic_describe_stats(const struct efx_hw_stat_desc *desc, size_t count,
const unsigned long *mask, u8 *names);
void efx_nic_update_stats(const struct efx_hw_stat_desc *desc, size_t count,
const unsigned long *mask, u64 *stats,
const void *dma_buf, bool accumulate);
void efx_nic_fix_nodesc_drop_stat(struct efx_nic *efx, u64 *stat);
#define EFX_MAX_FLUSH_TIME 5000
void efx_farch_generate_event(struct efx_nic *efx, unsigned int evq,
efx_qword_t *event);
#endif /* EFX_NIC_H */
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