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Commit 5f38b683 authored by Arend van Spriel's avatar Arend van Spriel Committed by John W. Linville
Browse files

brcmfmac: handle firmware signals requesting for packets 



The firmware can request the host driver for packets, by sending
either the MAC_REQUEST_CREDIT or the MAC_REQUEST_PACKET primitive.
This patch adds handling of these primitives.

Reviewed-by: default avatarPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: default avatarHante Meuleman <meuleman@broadcom.com>
Signed-off-by: default avatarArend van Spriel <arend@broadcom.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 33753d47

drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h

+2 −0
Original line number Diff line number Diff line
@@ -146,6 +146,8 @@ struct brcmf_fws_stats { 
	u32 mac_update_failed;

	u32 mac_ps_update_failed;

	u32 if_update_failed;

	u32 packet_request_failed;

	u32 credit_request_failed;

	u32 rollback_success;

	u32 rollback_failed;

	u32 delayq_full_error;

drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c

+27 −2
Original line number Diff line number Diff line
@@ -959,6 +959,29 @@ static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws, 
	return ret;

}



static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type,

				      u8 *data)

{

	struct brcmf_fws_mac_descriptor *entry;



	entry = &fws->desc.nodes[data[1] & 0x1F];

	if (!entry->occupied) {

		if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT)

			fws->stats.credit_request_failed++;

		else

			fws->stats.packet_request_failed++;

		return -ESRCH;

	}



	if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT)

		entry->requested_credit = data[0];

	else

		entry->requested_packet = data[0];



	entry->ac_bitmap = data[2];

	return 0;

}



static void brcmf_fws_return_credits(struct brcmf_fws_info *fws,

				     u8 fifo, u8 credits)

{
@@ -1366,8 +1389,6 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len, 
			break;



		switch (type) {

		case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT:

		case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET:

		case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS:

		case BRCMF_FWS_TYPE_COMP_TXSTATUS:

			break;
@@ -1383,6 +1404,10 @@ int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len, 
		case BRCMF_FWS_TYPE_INTERFACE_CLOSE:

			brcmf_fws_interface_state_indicate(fws, type, data);

			break;

		case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT:

		case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET:

			brcmf_fws_request_indicate(fws, type, data);

			break;

		case BRCMF_FWS_TYPE_TXSTATUS:

			brcmf_fws_txstatus_indicate(fws, data);

			break;