/*
 * Renesas USB driver
 *
 * Copyright (C) 2011 Renesas Solutions Corp.
 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */
#ifndef RENESAS_USB_FIFO_H
#define RENESAS_USB_FIFO_H

#include <linux/interrupt.h>
#include <linux/sh_dma.h>
#include <linux/workqueue.h>
#include <asm/dma.h>
#include "pipe.h"

struct usbhs_fifo {
	char *name;
	u32 port;	/* xFIFO */
	u32 sel;	/* xFIFOSEL */
	u32 ctr;	/* xFIFOCTR */

	struct usbhs_pipe	*pipe;

	struct dma_chan		*tx_chan;
	struct dma_chan		*rx_chan;

	struct sh_dmae_slave	tx_slave;
	struct sh_dmae_slave	rx_slave;
};

#define USBHS_MAX_NUM_DFIFO	4
struct usbhs_fifo_info {
	struct usbhs_fifo cfifo;
	struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
};
#define usbhsf_get_dnfifo(p, n)	(&((p)->fifo_info.dfifo[n]))
#define usbhs_for_each_dfifo(priv, dfifo, i)			\
	for ((i) = 0;						\
	     ((i) < USBHS_MAX_NUM_DFIFO) &&			\
		     ((dfifo) = usbhsf_get_dnfifo(priv, (i)));	\
	     (i)++)

struct usbhs_pkt_handle;
struct usbhs_pkt {
	struct list_head node;
	struct usbhs_pipe *pipe;
	const struct usbhs_pkt_handle *handler;
	void (*done)(struct usbhs_priv *priv,
		     struct usbhs_pkt *pkt);
	struct work_struct work;
	dma_addr_t dma;
	dma_cookie_t cookie;
	void *buf;
	int length;
	int trans;
	int actual;
	int zero;
	int sequence;
};

struct usbhs_pkt_handle {
	int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
	int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
	int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
};

/*
 * fifo
 */
int usbhs_fifo_probe(struct usbhs_priv *priv);
void usbhs_fifo_remove(struct usbhs_priv *priv);
void usbhs_fifo_init(struct usbhs_priv *priv);
void usbhs_fifo_quit(struct usbhs_priv *priv);
void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe);

/*
 * packet info
 */
extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;

extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;

extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;

extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;

void usbhs_pkt_init(struct usbhs_pkt *pkt);
void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
		    void (*done)(struct usbhs_priv *priv,
				 struct usbhs_pkt *pkt),
		    void *buf, int len, int zero, int sequence);
struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
void usbhs_pkt_start(struct usbhs_pipe *pipe);

#endif /* RENESAS_USB_FIFO_H */
 colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</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>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 19:03:21 +0100</td></tr>
<tr><th>committer</th><td>Thomas Gleixner &lt;tglx@linutronix.de&gt;</td><td class='right'>2017-01-31 20:22:18 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/irda/irttp.c?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>aaaec6fc755447a1d056765b11b24d8ff2b81366</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/irda/irttp.c?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>a7f4167960ee1df86739905b6ccdeb95465bfe5f</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/irda/irttp.c?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>net/irda/irttp.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/irda/irttp.c?id=08d85f3ea99f1eeafc4e8507936190e86a16ee8c'>08d85f3ea99f1eeafc4e8507936190e86a16ee8c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/irda/irttp.c?id=aaaec6fc755447a1d056765b11b24d8ff2b81366&amp;id2=08d85f3ea99f1eeafc4e8507936190e86a16ee8c'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/irq: Make irq activate operations symmetric</div><div class='commit-msg'>The recent commit which prevents double activation of interrupts unearthed
interesting code in x86. The code (ab)uses irq_domain_activate_irq() to
reconfigure an already activated interrupt. That trips over the prevention
code now.

Fix it by deactivating the interrupt before activating the new configuration.

Fixes: 08d85f3ea99f1 "irqdomain: Avoid activating interrupts more than once"
Reported-and-tested-by: Mike Galbraith &lt;efault@gmx.de&gt;
Reported-and-tested-by: Borislav Petkov &lt;bp@alien8.de&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Andrey Ryabinin &lt;aryabinin@virtuozzo.com&gt;
Cc: Marc Zyngier &lt;marc.zyngier@arm.com&gt;
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos

</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=aaaec6fc755447a1d056765b11b24d8ff2b81366'>Diffstat</a> (limited to 'net/irda/irttp.c')</div><table summary='diffstat' class='diffstat'>