/*
 * Copyright (C) 2012  Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __LOCAL_HCI_H
#define __LOCAL_HCI_H

#include <net/nfc/hci.h>

struct gate_pipe_map {
	u8 gate;
	u8 pipe;
};

struct hcp_message {
	u8 header;		/* type -cmd,evt,rsp- + instruction */
	u8 data[];
} __packed;

struct hcp_packet {
	u8 header;		/* cbit+pipe */
	struct hcp_message message;
} __packed;

struct hcp_exec_waiter {
	wait_queue_head_t *wq;
	bool exec_complete;
	int exec_result;
	struct sk_buff *result_skb;
};

struct hci_msg {
	struct list_head msg_l;
	struct sk_buff_head msg_frags;
	bool wait_response;
	data_exchange_cb_t cb;
	void *cb_context;
	unsigned long completion_delay;
};

struct hci_create_pipe_params {
	u8 src_gate;
	u8 dest_host;
	u8 dest_gate;
} __packed;

struct hci_create_pipe_resp {
	u8 src_host;
	u8 src_gate;
	u8 dest_host;
	u8 dest_gate;
	u8 pipe;
} __packed;

struct hci_delete_pipe_noti {
	u8 pipe;
} __packed;

struct hci_all_pipe_cleared_noti {
	u8 host;
} __packed;

#define NFC_HCI_FRAGMENT	0x7f

#define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
#define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
#define HCP_MSG_GET_CMD(header) (header & 0x3f)

int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
			   u8 type, u8 instruction,
			   const u8 *payload, size_t payload_len,
			   data_exchange_cb_t cb, void *cb_context,
			   unsigned long completion_delay);

void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
			    u8 instruction, struct sk_buff *skb);

/* HCP headers */
#define NFC_HCI_HCP_PACKET_HEADER_LEN	1
#define NFC_HCI_HCP_MESSAGE_HEADER_LEN	1
#define NFC_HCI_HCP_HEADER_LEN		2

/* HCP types */
#define NFC_HCI_HCP_COMMAND	0x00
#define NFC_HCI_HCP_EVENT	0x01
#define NFC_HCI_HCP_RESPONSE	0x02

/* Generic commands */
#define NFC_HCI_ANY_SET_PARAMETER	0x01
#define NFC_HCI_ANY_GET_PARAMETER	0x02
#define NFC_HCI_ANY_OPEN_PIPE		0x03
#define NFC_HCI_ANY_CLOSE_PIPE		0x04

/* Reader RF commands */
#define NFC_HCI_WR_XCHG_DATA		0x10

/* Admin commands */
#define NFC_HCI_ADM_CREATE_PIPE			0x10
#define NFC_HCI_ADM_DELETE_PIPE			0x11
#define NFC_HCI_ADM_NOTIFY_PIPE_CREATED		0x12
#define NFC_HCI_ADM_NOTIFY_PIPE_DELETED		0x13
#define NFC_HCI_ADM_CLEAR_ALL_PIPE		0x14
#define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED	0x15

/* Generic responses */
#define NFC_HCI_ANY_OK				0x00
#define NFC_HCI_ANY_E_NOT_CONNECTED		0x01
#define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN		0x02
#define NFC_HCI_ANY_E_NOK			0x03
#define NFC_HCI_ANY_E_PIPES_FULL		0x04
#define NFC_HCI_ANY_E_REG_PAR_UNKNOWN		0x05
#define NFC_HCI_ANY_E_PIPE_NOT_OPENED		0x06
#define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED		0x07
#define NFC_HCI_ANY_E_INHIBITED			0x08
#define NFC_HCI_ANY_E_TIMEOUT			0x09
#define NFC_HCI_ANY_E_REG_ACCESS_DENIED		0x0a
#define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED	0x0b

#endif /* __LOCAL_HCI_H */
ore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Richard Genoud &lt;richard.genoud@gmail.com&gt;</td><td class='right'>2016-12-13 17:27:56 +0100</td></tr>
<tr><th>committer</th><td>Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;</td><td class='right'>2017-01-11 08:18:45 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=89d8232411a85b9a6b12fd5da4d07d8a138a8e0c'>89d8232411a85b9a6b12fd5da4d07d8a138a8e0c</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=89d8232411a85b9a6b12fd5da4d07d8a138a8e0c'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=89d8232411a85b9a6b12fd5da4d07d8a138a8e0c'>a72050791b333650ecec60742926be90dabb535e</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=a121103c922847ba5010819a3f250f1f7fc84ab8'>a121103c922847ba5010819a3f250f1f7fc84ab8</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=89d8232411a85b9a6b12fd5da4d07d8a138a8e0c&amp;id2=a121103c922847ba5010819a3f250f1f7fc84ab8'>diff</a>)</td></tr></table>
<div class='commit-subject'>tty/serial: atmel_serial: BUG: stop DMA from transmitting in stop_tx</div><div class='commit-msg'>If we don't disable the transmitter in atmel_stop_tx, the DMA buffer
continues to send data until it is emptied.
This cause problems with the flow control (CTS is asserted and data are
still sent).

So, disabling the transmitter in atmel_stop_tx is a sane thing to do.

Tested on at91sam9g35-cm(DMA)
Tested for regressions on sama5d2-xplained(Fifo) and at91sam9g20ek(PDC)

Cc: &lt;stable@vger.kernel.org&gt; (beware, this won't apply before 4.3)
Signed-off-by: Richard Genoud &lt;richard.genoud@gmail.com&gt;
Acked-by: Nicolas Ferre &lt;nicolas.ferre@atmel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=89d8232411a85b9a6b12fd5da4d07d8a138a8e0c'>Diffstat</a></div><table summary='diffstat' class='diffstat'>