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OpenCloudOS-Kernel/drivers/net/ethernet/sfc/efx.h

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New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
/****************************************************************************
* Driver for Solarflare Solarstorm network controllers and boards
* Copyright 2005-2006 Fen Systems Ltd.
sfc: Update copyright dates Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2011-02-25 08:01:34 +08:00
* Copyright 2006-2010 Solarflare Communications Inc.
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
*
* 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_EFX_H
#define EFX_EFX_H
#include "net_driver.h"
sfc: Add filter table management Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-20 16:43:07 +08:00
#include "filter.h"
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
sfc: Remove pointless abstraction of memory BAR number Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-23 16:32:33 +08:00
/* Solarstorm controllers use BAR 0 for I/O space and BAR 2(&3) for memory */
#define EFX_MEM_BAR 2
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
/* TX */
sfc: Combine high-level header files All files that include ethtool.h, rx.h or tx.h are also including efx.h, and there is no good reason to separate out the few declarations they contain. Therefore fold them into efx.h. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-24 00:07:30 +08:00
extern int efx_probe_tx_queue(struct efx_tx_queue *tx_queue);
extern void efx_remove_tx_queue(struct efx_tx_queue *tx_queue);
extern void efx_init_tx_queue(struct efx_tx_queue *tx_queue);
sfc: Move TX queue core queue mapping into tx.c efx_hard_start_xmit() needs to implement a mapping which is the inverse of tx_queue::core_txq. Move the initialisation of tx_queue::core_txq next to efx_hard_start_xmit() to make the connection more obvious. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2011-01-13 02:39:40 +08:00
extern void efx_init_tx_queue_core_txq(struct efx_tx_queue *tx_queue);
sfc: Combine high-level header files All files that include ethtool.h, rx.h or tx.h are also including efx.h, and there is no good reason to separate out the few declarations they contain. Therefore fold them into efx.h. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-24 00:07:30 +08:00
extern void efx_fini_tx_queue(struct efx_tx_queue *tx_queue);
extern netdev_tx_t
efx_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev);
extern netdev_tx_t
efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb);
sfc: Move efx_xmit_done() declaration into correct stanza Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-23 16:31:54 +08:00
extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index);
sfc: Add TX queues for high-priority traffic Implement the ndo_setup_tc() operation with 2 traffic classes. Current Solarstorm controllers do not implement TX queue priority, but they do allow queues to be 'paced' with an enforced delay between packets. Paced and unpaced queues are scheduled in round-robin within two separate hardware bins (paced queues with a large delay may be placed into a third bin temporarily, but we won't use that). If there are queues in both bins, the TX scheduler will alternate between them. If we make high-priority queues unpaced and best-effort queues paced, and high-priority queues are mostly empty, a single high-priority queue can then instantly take 50% of the packet rate regardless of how many of the best-effort queues have descriptors outstanding. We do not actually want an enforced delay between packets on best- effort queues, so we set the pace value to a reserved value that actually results in a delay of 0. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2011-01-11 05:18:20 +08:00
extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc);
sfc: Fix maximum number of TSO segments and minimum TX queue size Currently an skb requiring TSO may not fit within a minimum-size TX queue. The TX queue selected for the skb may stall and trigger the TX watchdog repeatedly (since the problem skb will be retried after the TX reset). This issue is designated as CVE-2012-3412. Set the maximum number of TSO segments for our devices to 100. This should make no difference to behaviour unless the actual MSS is less than about 700. Increase the minimum TX queue size accordingly to allow for 2 worst-case skbs, so that there will definitely be space to add an skb after we wake a queue. To avoid invalidating existing configurations, change efx_ethtool_set_ringparam() to fix up values that are too small rather than returning -EINVAL. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-30 23:57:44 +08:00
extern unsigned int efx_tx_max_skb_descs(struct efx_nic *efx);
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
/* RX */
sfc: allocate more RX buffers per page Allocating 2 buffers per page is insanely inefficient when MTU is 1500 and PAGE_SIZE is 64K (as it usually is on POWER). Allocate as many as we can fit, and choose the refill batch size at run-time so that we still always use a whole page at once. [bwh: Fix loop condition to allow for compound pages; rebase] Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-02-13 18:54:41 +08:00
extern void efx_rx_config_page_split(struct efx_nic *efx);
sfc: Combine high-level header files All files that include ethtool.h, rx.h or tx.h are also including efx.h, and there is no good reason to separate out the few declarations they contain. Therefore fold them into efx.h. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-24 00:07:30 +08:00
extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue);
extern void efx_remove_rx_queue(struct efx_rx_queue *rx_queue);
extern void efx_init_rx_queue(struct efx_rx_queue *rx_queue);
extern void efx_fini_rx_queue(struct efx_rx_queue *rx_queue);
extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue);
sfc: Remove efx_rx_queue::add_lock Ensure that efx_fast_push_rx_descriptors() must only run from efx_process_channel() [NAPI], or when napi_disable() has been executed. Reimplement the slow fill by sending an event to the channel, so that NAPI runs, and hanging the subsequent fast fill off the event handler. Replace the sfc_refill workqueue and delayed work items with a timer. We do not need to stop this timer in efx_flush_all() because it's safe to send the event always; receiving it will be delayed until NAPI is restarted. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-01 19:19:39 +08:00
extern void efx_rx_slow_fill(unsigned long context);
sfc: Enable RX DMA scattering where possible Enable RX DMA scattering iff an RX buffer large enough for the current MTU will not fit into a single page and the NIC supports DMA scattering for kernel-mode RX queues. On Falcon and Siena, the RX_USR_BUF_SIZE field is used as the DMA limit for both all RX queues with scatter enabled. Set it to 1824, matching what Onload uses now. Maintain a statistic for frames truncated due to lack of descriptors (rx_nodesc_trunc). This is distinct from rx_frm_trunc which may be incremented when scattering is disabled and implies an over-length frame. Whenever an MTU change causes scattering to be turned on or off, update filters that point to the PF queues, but leave others unchanged, as VF drivers assume scattering is off. Add n_frags parameters to various functions, and make them iterate: - efx_rx_packet() - efx_recycle_rx_buffers() - efx_rx_mk_skb() - efx_rx_deliver() Make efx_handle_rx_event() responsible for updating efx_rx_queue::removed_count. Change the RX pipeline state to a starting ring index and number of fragments, and make __efx_rx_packet() responsible for clearing it. Based on earlier versions by David Riddoch and Jon Cooper. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-01-30 07:33:15 +08:00
extern void __efx_rx_packet(struct efx_channel *channel);
extern void efx_rx_packet(struct efx_rx_queue *rx_queue,
unsigned int index, unsigned int n_frags,
sfc: Replace efx_rx_buffer::is_page and other booleans with a flags field Replace checksummed and discard booleans from efx_handle_rx_event() with a bitmask, added to the flags field. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2011-08-27 01:05:11 +08:00
unsigned int len, u16 flags);
sfc: Wrap __efx_rx_packet() with efx_rx_flush_packet() The pipeline mechanism will need to change a bit for scattered packets. Add a wrapper to insulate efx_process_channel() from this. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-01-30 07:33:14 +08:00
static inline void efx_rx_flush_packet(struct efx_channel *channel)
{
sfc: Enable RX DMA scattering where possible Enable RX DMA scattering iff an RX buffer large enough for the current MTU will not fit into a single page and the NIC supports DMA scattering for kernel-mode RX queues. On Falcon and Siena, the RX_USR_BUF_SIZE field is used as the DMA limit for both all RX queues with scatter enabled. Set it to 1824, matching what Onload uses now. Maintain a statistic for frames truncated due to lack of descriptors (rx_nodesc_trunc). This is distinct from rx_frm_trunc which may be incremented when scattering is disabled and implies an over-length frame. Whenever an MTU change causes scattering to be turned on or off, update filters that point to the PF queues, but leave others unchanged, as VF drivers assume scattering is off. Add n_frags parameters to various functions, and make them iterate: - efx_rx_packet() - efx_recycle_rx_buffers() - efx_rx_mk_skb() - efx_rx_deliver() Make efx_handle_rx_event() responsible for updating efx_rx_queue::removed_count. Change the RX pipeline state to a starting ring index and number of fragments, and make __efx_rx_packet() responsible for clearing it. Based on earlier versions by David Riddoch and Jon Cooper. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-01-30 07:33:15 +08:00
if (channel->rx_pkt_n_frags)
__efx_rx_packet(channel);
sfc: Wrap __efx_rx_packet() with efx_rx_flush_packet() The pipeline mechanism will need to change a bit for scattered packets. Add a wrapper to insulate efx_process_channel() from this. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-01-30 07:33:14 +08:00
}
sfc: Remove efx_rx_queue::add_lock Ensure that efx_fast_push_rx_descriptors() must only run from efx_process_channel() [NAPI], or when napi_disable() has been executed. Reimplement the slow fill by sending an event to the channel, so that NAPI runs, and hanging the subsequent fast fill off the event handler. Replace the sfc_refill workqueue and delayed work items with a timer. We do not need to stop this timer in efx_flush_all() because it's safe to send the event always; receiving it will be delayed until NAPI is restarted. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-01 19:19:39 +08:00
extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
sfc: Make the dmaq size a run-time setting (rather than compile-time) - Allow the ring size to be specified in non power-of-two sizes (for instance to limit the amount of receive buffers). - Automatically size the event queue. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-10 14:42:22 +08:00
#define EFX_MAX_DMAQ_SIZE 4096UL
#define EFX_DEFAULT_DMAQ_SIZE 1024UL
#define EFX_MIN_DMAQ_SIZE 512UL
#define EFX_MAX_EVQ_SIZE 16384UL
#define EFX_MIN_EVQ_SIZE 512UL
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
sfc: Fix maximum number of TSO segments and minimum TX queue size Currently an skb requiring TSO may not fit within a minimum-size TX queue. The TX queue selected for the skb may stall and trigger the TX watchdog repeatedly (since the problem skb will be retried after the TX reset). This issue is designated as CVE-2012-3412. Set the maximum number of TSO segments for our devices to 100. This should make no difference to behaviour unless the actual MSS is less than about 700. Increase the minimum TX queue size accordingly to allow for 2 worst-case skbs, so that there will definitely be space to add an skb after we wake a queue. To avoid invalidating existing configurations, change efx_ethtool_set_ringparam() to fix up values that are too small rather than returning -EINVAL. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-30 23:57:44 +08:00
/* Maximum number of TCP segments we support for soft-TSO */
#define EFX_TSO_MAX_SEGS 100
/* The smallest [rt]xq_entries that the driver supports. RX minimum
* is a bit arbitrary. For TX, we must have space for at least 2
* TSO skbs.
*/
#define EFX_RXQ_MIN_ENT 128U
#define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx))
sfc: Allow changing the DMA ring sizes dynamically via ethtool This requires some reorganisation of channel setup and teardown to ensure that we can always roll-back a failed change. Based on work by Steve Hodgson <shodgson@solarflare.com> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-10 14:42:33 +08:00
sfc: Add filter table management Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-20 16:43:07 +08:00
/* Filters */
extern int efx_probe_filters(struct efx_nic *efx);
extern void efx_restore_filters(struct efx_nic *efx);
extern void efx_remove_filters(struct efx_nic *efx);
sfc: Enable RX DMA scattering where possible Enable RX DMA scattering iff an RX buffer large enough for the current MTU will not fit into a single page and the NIC supports DMA scattering for kernel-mode RX queues. On Falcon and Siena, the RX_USR_BUF_SIZE field is used as the DMA limit for both all RX queues with scatter enabled. Set it to 1824, matching what Onload uses now. Maintain a statistic for frames truncated due to lack of descriptors (rx_nodesc_trunc). This is distinct from rx_frm_trunc which may be incremented when scattering is disabled and implies an over-length frame. Whenever an MTU change causes scattering to be turned on or off, update filters that point to the PF queues, but leave others unchanged, as VF drivers assume scattering is off. Add n_frags parameters to various functions, and make them iterate: - efx_rx_packet() - efx_recycle_rx_buffers() - efx_rx_mk_skb() - efx_rx_deliver() Make efx_handle_rx_event() responsible for updating efx_rx_queue::removed_count. Change the RX pipeline state to a starting ring index and number of fragments, and make __efx_rx_packet() responsible for clearing it. Based on earlier versions by David Riddoch and Jon Cooper. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-01-30 07:33:15 +08:00
extern void efx_filter_update_rx_scatter(struct efx_nic *efx);
sfc: Use consistent types for filter IDs, indices and search depths Filter IDs are u32 (but never very large) so an ID/error return value should have type s32. Filter indices and search depths are never negative, so should have type unsigned int. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-03 20:05:27 +08:00
extern s32 efx_filter_insert_filter(struct efx_nic *efx,
sfc: Add filter table management Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-20 16:43:07 +08:00
struct efx_filter_spec *spec,
bool replace);
sfc: Add support for retrieving and removing filters by ID These new functions will support an implementation of the ethtool RX NFC rules API. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-03 20:05:39 +08:00
extern int efx_filter_remove_id_safe(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 filter_id);
extern int efx_filter_get_filter_safe(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 filter_id, struct efx_filter_spec *);
sfc: Remove filter table IDs from filter functions The separation between filter tables is largely an internal detail and it may be removed in future hardware. To prepare for that: - Merge table ID with filter index to make an opaque filter ID - Wrap efx_filter_table_clear() with a function that clears filters from both RX tables, which is all that the current caller requires Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2010-12-08 03:02:27 +08:00
extern void efx_filter_clear_rx(struct efx_nic *efx,
enum efx_filter_priority priority);
sfc: Add support for retrieving and removing filters by ID These new functions will support an implementation of the ethtool RX NFC rules API. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-03 20:05:39 +08:00
extern u32 efx_filter_count_rx_used(struct efx_nic *efx,
enum efx_filter_priority priority);
extern u32 efx_filter_get_rx_id_limit(struct efx_nic *efx);
extern s32 efx_filter_get_rx_ids(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 *buf, u32 size);
sfc: Implement hardware acceleration of RFS Use the existing filter management functions to insert TCP/IPv4 and UDP/IPv4 4-tuple filters for Receive Flow Steering. For each channel, track how many RFS filters are being added during processing of received packets and scan the corresponding number of table entries for filters that may be reclaimed. Do this in batches to reduce lock overhead. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2011-01-05 08:50:41 +08:00
#ifdef CONFIG_RFS_ACCEL
extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
u16 rxq_index, u32 flow_id);
extern bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota);
static inline void efx_filter_rfs_expire(struct efx_channel *channel)
{
if (channel->rfs_filters_added >= 60 &&
__efx_filter_rfs_expire(channel->efx, 100))
channel->rfs_filters_added -= 60;
}
#define efx_filter_rfs_enabled() 1
#else
static inline void efx_filter_rfs_expire(struct efx_channel *channel) {}
#define efx_filter_rfs_enabled() 0
#endif
sfc: Add filter table management Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-20 16:43:07 +08:00
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
/* Channels */
sfc: Add support for 'extra' channel types Abstract some of the channel operations to allow for 'extra' channels that do not have RX or TX queues. - Try to assign a channel to each extra channel type that is enabled for the NIC, but gracefully degrade if we can't allocate sufficient MSI-X vectors - Allow each extra channel type to generate its own channel name - Allow channel types to disable reallocation and reinitialisation of their channels Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-02-14 07:45:02 +08:00
extern int efx_channel_dummy_op_int(struct efx_channel *channel);
sfc: Add channel specific receive_skb handler and post_remove callback Allows an extra channel to override the standard receive_skb handler and also for extra non generic operations to be performed on remove. Also set default rx strategy so only skbs can be delivered to the PTP receive function. Signed-off-by: Stuart Hodgson <smhodgson@solarflare.com> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-07-18 16:52:11 +08:00
extern void efx_channel_dummy_op_void(struct efx_channel *channel);
sfc: Allow changing the DMA ring sizes dynamically via ethtool This requires some reorganisation of channel setup and teardown to ensure that we can always roll-back a failed change. Based on work by Steve Hodgson <shodgson@solarflare.com> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-09-10 14:42:33 +08:00
extern int
efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries);
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
/* Ports */
sfc: Refactor link configuration Refactor PHY, MAC and NIC configuration operations so that the existing link configuration can be re-pushed with: efx->phy_op->reconfigure(efx); efx->mac_op->reconfigure(efx); and a new configuration with: efx->nic_op->reconfigure_port(efx); (plus locking and error-checking). We have not held the link settings in software (aside from flow control), and have relied on asking the hardware what they are. This is a problem because in some cases the hardware may no longer be in a state to tell us. In particular, if an entire multi-port board is reset through one port, the driver bindings to other ports have no chance to save settings before recovering. We only actually need to keep track of the autonegotiation settings, so add an ethtool advertising mask to struct efx_nic, initialise it in PHY init and update it as necessary. Remove now-unneeded uses of efx_phy_op::{get,set}_settings() and struct ethtool_cmd. Much of this was done by Steve Hodgson <shodgson@solarflare.com>. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 11:42:41 +08:00
extern int efx_reconfigure_port(struct efx_nic *efx);
extern int __efx_reconfigure_port(struct efx_nic *efx);
sfc: Extend self-tests Include PMA/PMD in loopback self-tests as intended. Add NVRAM checksum validation and include it in self-tests. Add register self-tests. Run PHY self-tests where available. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-09-01 19:49:02 +08:00
sfc: Combine high-level header files All files that include ethtool.h, rx.h or tx.h are also including efx.h, and there is no good reason to separate out the few declarations they contain. Therefore fold them into efx.h. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-24 00:07:30 +08:00
/* Ethtool support */
extern const struct ethtool_ops efx_ethtool_ops;
sfc: Extend self-tests Include PMA/PMD in loopback self-tests as intended. Add NVRAM checksum validation and include it in self-tests. Add register self-tests. Run PHY self-tests where available. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-09-01 19:49:02 +08:00
/* Reset handling */
sfc: Implement ethtool reset operation Refactor efx_reset_down() and efx_reset_up() accordingly. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 11:43:15 +08:00
extern int efx_reset(struct efx_nic *efx, enum reset_type method);
sfc: Refactor link configuration Refactor PHY, MAC and NIC configuration operations so that the existing link configuration can be re-pushed with: efx->phy_op->reconfigure(efx); efx->mac_op->reconfigure(efx); and a new configuration with: efx->nic_op->reconfigure_port(efx); (plus locking and error-checking). We have not held the link settings in software (aside from flow control), and have relied on asking the hardware what they are. This is a problem because in some cases the hardware may no longer be in a state to tell us. In particular, if an entire multi-port board is reset through one port, the driver bindings to other ports have no chance to save settings before recovering. We only actually need to keep track of the autonegotiation settings, so add an ethtool advertising mask to struct efx_nic, initialise it in PHY init and update it as necessary. Remove now-unneeded uses of efx_phy_op::{get,set}_settings() and struct ethtool_cmd. Much of this was done by Steve Hodgson <shodgson@solarflare.com>. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 11:42:41 +08:00
extern void efx_reset_down(struct efx_nic *efx, enum reset_type method);
extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
sfc: Fix EEH with legacy interrupts. PCI legacy interrupts are level-triggered, and we cannot mask them up on an isolated device. Instead, disable the IRQ at the controller until we have recovered. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-03-22 00:41:43 +08:00
extern int efx_try_recovery(struct efx_nic *efx);
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
/* Global */
extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
sfc: Validate IRQ moderation parameters in efx_init_irq_moderation() Add a range check, and move the check that RX and TX are consistent from efx_ethtool_set_coalesce(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-05 15:43:04 +08:00
extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
unsigned int rx_usecs, bool rx_adaptive,
bool rx_may_override_tx);
sfc: Correct reporting and validation of TX interrupt coalescing The reported TX IRQ moderation is generated in a completely crazy way. Make it simple and correct. When channels are shared between RX and TX, TX IRQ moderation must be the same as RX IRQ moderation, but must be specified as 0! Allow it to be either specified as the same, or left at its previous value in which case it will be quietly overridden. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-05 15:42:25 +08:00
extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
unsigned int *rx_usecs, bool *rx_adaptive);
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
/* Dummy PHY ops for PHY drivers */
extern int efx_port_dummy_op_int(struct efx_nic *efx);
extern void efx_port_dummy_op_void(struct efx_nic *efx);
sfc: make functions static Make local functions and variable static. Do some rearrangement of the string table stuff to put it where it gets used. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-18 13:27:31 +08:00
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
sfc: Expose flash region storing boot code as MTD The boot code that appears as a PCI expansion ROM on the SFC4000 is stored in flash. Expose this as a standard MTD device to allow for in-place upgrades. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-05 04:34:28 +08:00
/* MTD */
#ifdef CONFIG_SFC_MTD
extern int efx_mtd_probe(struct efx_nic *efx);
extern void efx_mtd_rename(struct efx_nic *efx);
extern void efx_mtd_remove(struct efx_nic *efx);
#else
static inline int efx_mtd_probe(struct efx_nic *efx) { return 0; }
static inline void efx_mtd_rename(struct efx_nic *efx) {}
static inline void efx_mtd_remove(struct efx_nic *efx) {}
#endif
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
static inline void efx_schedule_channel(struct efx_channel *channel)
{
sfc: Implement message level control Replace EFX_ERR() with netif_err(), EFX_INFO() with netif_info(), EFX_LOG() with netif_dbg() and EFX_TRACE() and EFX_REGDUMP() with netif_vdbg(). Replace EFX_ERR_RL(), EFX_INFO_RL() and EFX_LOG_RL() using explicit calls to net_ratelimit(). Implement the ethtool operations to get and set message level flags, and add a 'debug' module parameter for the initial value. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-23 19:30:07 +08:00
netif_vdbg(channel->efx, intr, channel->efx->net_dev,
"channel %d scheduling NAPI poll on CPU%d\n",
channel->channel, raw_smp_processor_id());
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
net: Remove redundant NAPI functions Following the removal of the unused struct net_device * parameter from the NAPI functions named *netif_rx_* in commit 908a7a1, they are exactly equivalent to the corresponding *napi_* functions and are therefore redundant. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-20 08:43:59 +08:00
napi_schedule(&channel->napi_str);
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
}
sfc: Clean up test interrupt handling Interrupts are normally generated by the event queues, moderated by timers. However, they may also be triggered by detection of a 'fatal' error condition (e.g. memory parity error) or by the host writing to certain CSR fields as part of a self-test. The IRQ level/index used for these on Falcon rev B0 and Siena is set by the KER_INT_LEVE_SEL field and cached by the driver in efx_nic::fatal_irq_level. Since this value is also relevant to self-tests rename the field to just 'irq_level'. Avoid unnecessary cache traffic by using a per-channel 'last_irq_cpu' field and only writing to the per-controller field when the interrupt matches efx_nic::irq_level. Remove the volatile qualifier and use ACCESS_ONCE in the places we read these fields. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-01-06 04:14:10 +08:00
static inline void efx_schedule_channel_irq(struct efx_channel *channel)
{
sfc: Run event/IRQ self-test asynchronously when interface is brought up Generate a test event on each event queue whenever the interface is brought up, then after 1 second check that we have either handled a test event or handled another IRQ for each event queue. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-02-29 07:40:21 +08:00
channel->event_test_cpu = raw_smp_processor_id();
sfc: Clean up test interrupt handling Interrupts are normally generated by the event queues, moderated by timers. However, they may also be triggered by detection of a 'fatal' error condition (e.g. memory parity error) or by the host writing to certain CSR fields as part of a self-test. The IRQ level/index used for these on Falcon rev B0 and Siena is set by the KER_INT_LEVE_SEL field and cached by the driver in efx_nic::fatal_irq_level. Since this value is also relevant to self-tests rename the field to just 'irq_level'. Avoid unnecessary cache traffic by using a per-channel 'last_irq_cpu' field and only writing to the per-controller field when the interrupt matches efx_nic::irq_level. Remove the volatile qualifier and use ACCESS_ONCE in the places we read these fields. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-01-06 04:14:10 +08:00
efx_schedule_channel(channel);
}
sfc: Simplify PHY polling Falcon can generate events for LASI interrupts from the PHY, but in practice we have never implemented this in reference designs. Instead we have polled, inserted the appropriate events, and then handled the events later. This is a waste of time and code. Instead, make PHY poll functions update the link state synchronously and report whether it changed. We can still make use of the LASI registers as a shortcut on the SFT9001. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-28 13:34:05 +08:00
extern void efx_link_status_changed(struct efx_nic *efx);
sfc: Refactor link configuration Refactor PHY, MAC and NIC configuration operations so that the existing link configuration can be re-pushed with: efx->phy_op->reconfigure(efx); efx->mac_op->reconfigure(efx); and a new configuration with: efx->nic_op->reconfigure_port(efx); (plus locking and error-checking). We have not held the link settings in software (aside from flow control), and have relied on asking the hardware what they are. This is a problem because in some cases the hardware may no longer be in a state to tell us. In particular, if an entire multi-port board is reset through one port, the driver bindings to other ports have no chance to save settings before recovering. We only actually need to keep track of the autonegotiation settings, so add an ethtool advertising mask to struct efx_nic, initialise it in PHY init and update it as necessary. Remove now-unneeded uses of efx_phy_op::{get,set}_settings() and struct ethtool_cmd. Much of this was done by Steve Hodgson <shodgson@solarflare.com>. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-29 11:42:41 +08:00
extern void efx_link_set_advertising(struct efx_nic *efx, u32);
sfc: Don't use enums as a bitmask. This fixes: drivers/net/sfc/mcdi_mac.c: In function ‘efx_mcdi_set_mac’: drivers/net/sfc/mcdi_mac.c:36:2: warning: case value ‘3’ not in enumerated type ‘enum efx_fc_type’ Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-18 05:53:22 +08:00
extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
sfc: Simplify PHY polling Falcon can generate events for LASI interrupts from the PHY, but in practice we have never implemented this in reference designs. Instead we have polled, inserted the appropriate events, and then handled the events later. This is a waste of time and code. Instead, make PHY poll functions update the link state synchronously and report whether it changed. We can still make use of the LASI registers as a shortcut on the SFT9001. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-28 13:34:05 +08:00
sfc: lock TX queues when calling netif_device_detach() The assertion of netif_device_present() at the top of efx_hard_start_xmit() may fail if we don't do this. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-10-17 20:21:23 +08:00
static inline void efx_device_detach_sync(struct efx_nic *efx)
{
struct net_device *dev = efx->net_dev;
/* Lock/freeze all TX queues so that we can be sure the
* TX scheduler is stopped when we're done and before
* netif_device_present() becomes false.
*/
sfc: Disable soft interrupt handling during efx_device_detach_sync() efx_device_detach_sync() locks all TX queues before marking the device detached and thus disabling further TX scheduling. But it can still be interrupted by TX completions which then result in TX scheduling in soft interrupt context. This will deadlock when it tries to acquire a TX queue lock that efx_device_detach_sync() already acquired. To avoid deadlock, we must use netif_tx_{,un}lock_bh(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-03-05 09:03:47 +08:00
netif_tx_lock_bh(dev);
sfc: lock TX queues when calling netif_device_detach() The assertion of netif_device_present() at the top of efx_hard_start_xmit() may fail if we don't do this. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-10-17 20:21:23 +08:00
netif_device_detach(dev);
sfc: Disable soft interrupt handling during efx_device_detach_sync() efx_device_detach_sync() locks all TX queues before marking the device detached and thus disabling further TX scheduling. But it can still be interrupted by TX completions which then result in TX scheduling in soft interrupt context. This will deadlock when it tries to acquire a TX queue lock that efx_device_detach_sync() already acquired. To avoid deadlock, we must use netif_tx_{,un}lock_bh(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-03-05 09:03:47 +08:00
netif_tx_unlock_bh(dev);
sfc: lock TX queues when calling netif_device_detach() The assertion of netif_device_present() at the top of efx_hard_start_xmit() may fail if we don't do this. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2012-10-17 20:21:23 +08:00
}
New driver "sfc" for Solarstorm SFC4000 controller. The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-27 19:55:59 +08:00
#endif /* EFX_EFX_H */