279 lines
8.4 KiB
C
279 lines
8.4 KiB
C
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/*
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* Copyright (C) 1999-2012, Broadcom Corporation
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a license
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* other than the GPL, without Broadcom's express prior written consent.
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* $Id: dhd_wlfc.h 328424 2012-04-19 05:23:09Z $
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*
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*/
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#ifndef __wlfc_host_driver_definitions_h__
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#define __wlfc_host_driver_definitions_h__
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/* 16 bits will provide an absolute max of 65536 slots */
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#define WLFC_HANGER_MAXITEMS 1024
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#define WLFC_HANGER_ITEM_STATE_FREE 1
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#define WLFC_HANGER_ITEM_STATE_INUSE 2
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#define WLFC_PKTID_HSLOT_MASK 0xffff /* allow 16 bits only */
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#define WLFC_PKTID_HSLOT_SHIFT 8
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/* x -> TXSTATUS TAG to/from firmware */
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#define WLFC_PKTID_HSLOT_GET(x) \
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(((x) >> WLFC_PKTID_HSLOT_SHIFT) & WLFC_PKTID_HSLOT_MASK)
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#define WLFC_PKTID_HSLOT_SET(var, slot) \
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((var) = ((var) & ~(WLFC_PKTID_HSLOT_MASK << WLFC_PKTID_HSLOT_SHIFT)) | \
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(((slot) & WLFC_PKTID_HSLOT_MASK) << WLFC_PKTID_HSLOT_SHIFT))
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#define WLFC_PKTID_FREERUNCTR_MASK 0xff
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#define WLFC_PKTID_FREERUNCTR_GET(x) ((x) & WLFC_PKTID_FREERUNCTR_MASK)
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#define WLFC_PKTID_FREERUNCTR_SET(var, ctr) \
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((var) = (((var) & ~WLFC_PKTID_FREERUNCTR_MASK) | \
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(((ctr) & WLFC_PKTID_FREERUNCTR_MASK))))
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#define WLFC_PKTQ_PENQ(pq, prec, p) ((pktq_full((pq)) || pktq_pfull((pq), (prec)))? \
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NULL : pktq_penq((pq), (prec), (p)))
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#define WLFC_PKTQ_PENQ_HEAD(pq, prec, p) ((pktq_full((pq)) || pktq_pfull((pq), (prec))) ? \
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NULL : pktq_penq_head((pq), (prec), (p)))
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typedef enum ewlfc_packet_state {
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eWLFC_PKTTYPE_NEW,
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eWLFC_PKTTYPE_DELAYED,
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eWLFC_PKTTYPE_SUPPRESSED,
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eWLFC_PKTTYPE_MAX
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} ewlfc_packet_state_t;
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typedef enum ewlfc_mac_entry_action {
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eWLFC_MAC_ENTRY_ACTION_ADD,
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eWLFC_MAC_ENTRY_ACTION_DEL,
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eWLFC_MAC_ENTRY_ACTION_UPDATE,
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eWLFC_MAC_ENTRY_ACTION_MAX
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} ewlfc_mac_entry_action_t;
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typedef struct wlfc_hanger_item {
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uint8 state;
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uint8 pad[3];
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uint32 identifier;
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void* pkt;
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#ifdef PROP_TXSTATUS_DEBUG
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uint32 push_time;
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#endif
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} wlfc_hanger_item_t;
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typedef struct wlfc_hanger {
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int max_items;
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uint32 pushed;
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uint32 popped;
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uint32 failed_to_push;
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uint32 failed_to_pop;
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uint32 failed_slotfind;
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wlfc_hanger_item_t items[1];
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} wlfc_hanger_t;
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#define WLFC_HANGER_SIZE(n) ((sizeof(wlfc_hanger_t) - \
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sizeof(wlfc_hanger_item_t)) + ((n)*sizeof(wlfc_hanger_item_t)))
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#define WLFC_STATE_OPEN 1
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#define WLFC_STATE_CLOSE 2
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#define WLFC_PSQ_PREC_COUNT ((AC_COUNT + 1) * 2) /* 2 for each AC traffic and bc/mc */
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#define WLFC_PSQ_LEN 256
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#define WLFC_SENDQ_LEN 128
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#define WLFC_FLOWCONTROL_HIWATER 128
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#define WLFC_FLOWCONTROL_LOWATER 64
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typedef struct wlfc_mac_descriptor {
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uint8 occupied;
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uint8 interface_id;
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uint8 iftype;
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uint8 state;
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uint8 ac_bitmap; /* for APSD */
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uint8 requested_credit;
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uint8 requested_packet;
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uint8 ea[ETHER_ADDR_LEN];
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/*
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maintain (MAC,AC) based seq count for
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packets going to the device. As well as bc/mc.
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*/
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uint8 seq[AC_COUNT + 1];
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uint8 generation;
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struct pktq psq;
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/* The AC pending bitmap that was reported to the fw at last change */
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uint8 traffic_lastreported_bmp;
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/* The new AC pending bitmap */
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uint8 traffic_pending_bmp;
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/* 1= send on next opportunity */
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uint8 send_tim_signal;
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uint8 mac_handle;
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#ifdef PROP_TXSTATUS_DEBUG
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uint32 dstncredit_sent_packets;
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uint32 dstncredit_acks;
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uint32 opened_ct;
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uint32 closed_ct;
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#endif
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} wlfc_mac_descriptor_t;
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#define WLFC_DECR_SEQCOUNT(entry, prec) do { if (entry->seq[(prec)] == 0) {\
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entry->seq[prec] = 0xff; } else entry->seq[prec]--;} while (0)
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#define WLFC_INCR_SEQCOUNT(entry, prec) entry->seq[(prec)]++
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#define WLFC_SEQCOUNT(entry, prec) entry->seq[(prec)]
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typedef struct athost_wl_stat_counters {
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uint32 pktin;
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uint32 pkt2bus;
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uint32 pktdropped;
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uint32 tlv_parse_failed;
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uint32 rollback;
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uint32 rollback_failed;
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uint32 sendq_full_error;
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uint32 delayq_full_error;
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uint32 credit_request_failed;
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uint32 packet_request_failed;
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uint32 mac_update_failed;
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uint32 psmode_update_failed;
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uint32 interface_update_failed;
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uint32 wlfc_header_only_pkt;
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uint32 txstatus_in;
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uint32 d11_suppress;
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uint32 wl_suppress;
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uint32 bad_suppress;
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uint32 pkt_freed;
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uint32 pkt_free_err;
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uint32 psq_wlsup_retx;
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uint32 psq_wlsup_enq;
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uint32 psq_d11sup_retx;
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uint32 psq_d11sup_enq;
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uint32 psq_hostq_retx;
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uint32 psq_hostq_enq;
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uint32 mac_handle_notfound;
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uint32 wlc_tossed_pkts;
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uint32 dhd_hdrpulls;
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uint32 generic_error;
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/* an extra one for bc/mc traffic */
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uint32 sendq_pkts[AC_COUNT + 1];
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#ifdef PROP_TXSTATUS_DEBUG
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/* all pkt2bus -> txstatus latency accumulated */
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uint32 latency_sample_count;
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uint32 total_status_latency;
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uint32 latency_most_recent;
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int idx_delta;
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uint32 deltas[10];
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uint32 fifo_credits_sent[6];
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uint32 fifo_credits_back[6];
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uint32 dropped_qfull[6];
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uint32 signal_only_pkts_sent;
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uint32 signal_only_pkts_freed;
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#endif
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} athost_wl_stat_counters_t;
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#ifdef PROP_TXSTATUS_DEBUG
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#define WLFC_HOST_FIFO_CREDIT_INC_SENTCTRS(ctx, ac) do { \
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(ctx)->stats.fifo_credits_sent[(ac)]++;} while (0)
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#define WLFC_HOST_FIFO_CREDIT_INC_BACKCTRS(ctx, ac) do { \
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(ctx)->stats.fifo_credits_back[(ac)]++;} while (0)
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#define WLFC_HOST_FIFO_DROPPEDCTR_INC(ctx, ac) do { \
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(ctx)->stats.dropped_qfull[(ac)]++;} while (0)
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#else
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#define WLFC_HOST_FIFO_CREDIT_INC_SENTCTRS(ctx, ac) do {} while (0)
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#define WLFC_HOST_FIFO_CREDIT_INC_BACKCTRS(ctx, ac) do {} while (0)
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#define WLFC_HOST_FIFO_DROPPEDCTR_INC(ctx, ac) do {} while (0)
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#endif
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#define WLFC_FCMODE_NONE 0
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#define WLFC_FCMODE_IMPLIED_CREDIT 1
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#define WLFC_FCMODE_EXPLICIT_CREDIT 2
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/* How long to defer borrowing in milliseconds */
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#define WLFC_BORROW_DEFER_PERIOD_MS 100
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/* Mask to represent available ACs (note: BC/MC is ignored */
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#define WLFC_AC_MASK 0xF
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/* Mask to check for only on-going AC_BE traffic */
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#define WLFC_AC_BE_TRAFFIC_ONLY 0xD
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typedef struct athost_wl_status_info {
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uint8 last_seqid_to_wlc;
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/* OSL handle */
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osl_t* osh;
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/* dhd pub */
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void* dhdp;
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/* stats */
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athost_wl_stat_counters_t stats;
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/* the additional ones are for bc/mc and ATIM FIFO */
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int FIFO_credit[AC_COUNT + 2];
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/* Credit borrow counts for each FIFO from each of the other FIFOs */
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int credits_borrowed[AC_COUNT + 2][AC_COUNT + 2];
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struct pktq SENDQ;
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/* packet hanger and MAC->handle lookup table */
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void* hanger;
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struct {
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/* table for individual nodes */
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wlfc_mac_descriptor_t nodes[WLFC_MAC_DESC_TABLE_SIZE];
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/* table for interfaces */
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wlfc_mac_descriptor_t interfaces[WLFC_MAX_IFNUM];
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/* OS may send packets to unknown (unassociated) destinations */
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/* A place holder for bc/mc and packets to unknown destinations */
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wlfc_mac_descriptor_t other;
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} destination_entries;
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/* token position for different priority packets */
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uint8 token_pos[AC_COUNT+1];
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/* ON/OFF state for flow control to the host network interface */
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uint8 hostif_flow_state[WLFC_MAX_IFNUM];
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uint8 host_ifidx;
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/* to flow control an OS interface */
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uint8 toggle_host_if;
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/*
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Mode in which the dhd flow control shall operate. Must be set before
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traffic starts to the device.
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0 - Do not do any proptxtstatus flow control
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1 - Use implied credit from a packet status
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2 - Use explicit credit
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*/
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uint8 proptxstatus_mode;
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/* To borrow credits */
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uint8 allow_credit_borrow;
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/* Timestamp to compute how long to defer borrowing for */
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uint32 borrow_defer_timestamp;
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} athost_wl_status_info_t;
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int dhd_wlfc_enable(dhd_pub_t *dhd);
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int dhd_wlfc_interface_event(struct dhd_info *,
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ewlfc_mac_entry_action_t action, uint8 ifid, uint8 iftype, uint8* ea);
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int dhd_wlfc_FIFOcreditmap_event(struct dhd_info *dhd, uint8* event_data);
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int dhd_wlfc_event(struct dhd_info *dhd);
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int dhd_os_wlfc_block(dhd_pub_t *pub);
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int dhd_os_wlfc_unblock(dhd_pub_t *pub);
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#endif /* __wlfc_host_driver_definitions_h__ */
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