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96 lines
3.4 KiB
Diff
96 lines
3.4 KiB
Diff
From 153e22c0ff1260035cd7fe72c8aeead1f5fac757 Mon Sep 17 00:00:00 2001
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From: Wright Feng <Wright.Feng@cypress.com>
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Date: Mon, 5 Nov 2018 05:51:54 +0000
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Subject: [PATCH] brcmfmac: add credit numbers updating support
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The credit numbers are static and tunable per chip in firmware side.
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However the credit number may be changed that is based on packet pool
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length and will send BRCMF_E_FIFO_CREDIT_MAP event to notify host driver
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updates the credit numbers during interface up.
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The purpose of this patch is making host driver has ability of updating
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the credit numbers when receiving the BRCMF_E_FIFO_CREDIT_MAP event.
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Signed-off-by: Wright Feng <wright.feng@cypress.com>
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Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../broadcom/brcm80211/brcmfmac/fwsignal.c | 23 ++++++++++++-------
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1 file changed, 15 insertions(+), 8 deletions(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
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@@ -511,6 +511,7 @@ struct brcmf_fws_info {
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struct work_struct fws_dequeue_work;
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u32 fifo_enqpkt[BRCMF_FWS_FIFO_COUNT];
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int fifo_credit[BRCMF_FWS_FIFO_COUNT];
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+ int init_fifo_credit[BRCMF_FWS_FIFO_COUNT];
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int credits_borrowed[BRCMF_FWS_FIFO_AC_VO + 1];
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int deq_node_pos[BRCMF_FWS_FIFO_COUNT];
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u32 fifo_credit_map;
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@@ -1237,6 +1238,9 @@ static void brcmf_fws_return_credits(str
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}
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fws->fifo_credit[fifo] += credits;
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+ if (fws->fifo_credit[fifo] > fws->init_fifo_credit[fifo])
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+ fws->fifo_credit[fifo] = fws->init_fifo_credit[fifo];
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+
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}
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static void brcmf_fws_schedule_deq(struct brcmf_fws_info *fws)
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@@ -1595,19 +1599,21 @@ static int brcmf_fws_notify_credit_map(s
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brcmf_err("event payload too small (%d)\n", e->datalen);
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return -EINVAL;
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}
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- if (fws->creditmap_received)
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- return 0;
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fws->creditmap_received = true;
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brcmf_dbg(TRACE, "enter: credits %pM\n", credits);
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brcmf_fws_lock(fws);
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for (i = 0; i < ARRAY_SIZE(fws->fifo_credit); i++) {
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- if (*credits)
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+ fws->fifo_credit[i] += credits[i] - fws->init_fifo_credit[i];
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+ fws->init_fifo_credit[i] = credits[i];
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+ if (fws->fifo_credit[i] > 0)
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fws->fifo_credit_map |= 1 << i;
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else
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fws->fifo_credit_map &= ~(1 << i);
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- fws->fifo_credit[i] = *credits++;
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+ WARN_ONCE(fws->fifo_credit[i] < 0,
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+ "fifo_credit[%d] is negative(%d)\n", i,
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+ fws->fifo_credit[i]);
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}
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brcmf_fws_schedule_deq(fws);
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brcmf_fws_unlock(fws);
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@@ -2013,7 +2019,7 @@ static int brcmf_fws_borrow_credit(struc
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}
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for (lender_ac = 0; lender_ac <= BRCMF_FWS_FIFO_AC_VO; lender_ac++) {
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- if (fws->fifo_credit[lender_ac]) {
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+ if (fws->fifo_credit[lender_ac] > 0) {
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fws->credits_borrowed[lender_ac]++;
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fws->fifo_credit[lender_ac]--;
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if (fws->fifo_credit[lender_ac] == 0)
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@@ -2210,8 +2216,9 @@ static void brcmf_fws_dequeue_worker(str
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}
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continue;
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}
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- while ((fws->fifo_credit[fifo]) || ((!fws->bcmc_credit_check) &&
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- (fifo == BRCMF_FWS_FIFO_BCMC))) {
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+ while ((fws->fifo_credit[fifo] > 0) ||
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+ ((!fws->bcmc_credit_check) &&
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+ (fifo == BRCMF_FWS_FIFO_BCMC))) {
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skb = brcmf_fws_deq(fws, fifo);
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if (!skb)
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break;
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@@ -2222,7 +2229,7 @@ static void brcmf_fws_dequeue_worker(str
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break;
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}
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if ((fifo == BRCMF_FWS_FIFO_AC_BE) &&
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- (fws->fifo_credit[fifo] == 0) &&
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+ (fws->fifo_credit[fifo] <= 0) &&
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(!fws->bus_flow_blocked)) {
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while (brcmf_fws_borrow_credit(fws) == 0) {
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skb = brcmf_fws_deq(fws, fifo);
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