9a1bb60250
This patch will add the msgbuf protocol. This protocol is used by the soon to be added new bus interface PCIe. Msgbuf is a protocol where most data is and remains located on the host (driver) side and transferred by DMA from and to device. Msgbuf is the protocol which takes care of the signalling of the buffers between host and device which identifies this DMA-able data. Reviewed-by: Arend Van Spriel <arend@broadcom.com> Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com> Signed-off-by: Hante Meuleman <meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*
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* Copyright (c) 2013 Broadcom Corporation
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/netdevice.h>
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#include <brcmu_wifi.h>
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#include "dhd.h"
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#include "dhd_bus.h"
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#include "dhd_dbg.h"
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#include "proto.h"
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#include "bcdc.h"
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#include "msgbuf.h"
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int brcmf_proto_attach(struct brcmf_pub *drvr)
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{
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struct brcmf_proto *proto;
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brcmf_dbg(TRACE, "Enter\n");
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proto = kzalloc(sizeof(*proto), GFP_ATOMIC);
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if (!proto)
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goto fail;
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drvr->proto = proto;
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if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC) {
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if (brcmf_proto_bcdc_attach(drvr))
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goto fail;
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} else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF) {
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if (brcmf_proto_msgbuf_attach(drvr))
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goto fail;
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} else {
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brcmf_err("Unsupported proto type %d\n",
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drvr->bus_if->proto_type);
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goto fail;
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}
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if ((proto->txdata == NULL) || (proto->hdrpull == NULL) ||
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(proto->query_dcmd == NULL) || (proto->set_dcmd == NULL) ||
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(proto->configure_addr_mode == NULL) ||
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(proto->delete_peer == NULL)) {
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brcmf_err("Not all proto handlers have been installed\n");
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goto fail;
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}
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return 0;
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fail:
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kfree(proto);
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drvr->proto = NULL;
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return -ENOMEM;
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}
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void brcmf_proto_detach(struct brcmf_pub *drvr)
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{
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brcmf_dbg(TRACE, "Enter\n");
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if (drvr->proto) {
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if (drvr->bus_if->proto_type == BRCMF_PROTO_BCDC)
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brcmf_proto_bcdc_detach(drvr);
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else if (drvr->bus_if->proto_type == BRCMF_PROTO_MSGBUF)
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brcmf_proto_msgbuf_detach(drvr);
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kfree(drvr->proto);
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drvr->proto = NULL;
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}
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}
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