[mirror_ubuntu-artful-kernel.git] / drivers / staging / rts5208 / rtsx.h

/* Driver for Realtek PCI-Express card reader
 * Header file
 *
 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. 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, 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/>.
 *
 * Author:
 *   Wei WANG (wei_wang@realsil.com.cn)
 *   Micky Ching (micky_ching@realsil.com.cn)
 */

#ifndef __REALTEK_RTSX_H
#define __REALTEK_RTSX_H

#include <linux/io.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/mutex.h>
#include <linux/cdrom.h>
#include <linux/workqueue.h>
#include <linux/timer.h>
#include <linux/time64.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_devinfo.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_host.h>

#define CR_DRIVER_NAME		"rts5208"

/*
 * macros for easy use
 */
#define rtsx_writel(chip, reg, value) \
	iowrite32(value, (chip)->rtsx->remap_addr + reg)
#define rtsx_readl(chip, reg) \
	ioread32((chip)->rtsx->remap_addr + reg)
#define rtsx_writew(chip, reg, value) \
	iowrite16(value, (chip)->rtsx->remap_addr + reg)
#define rtsx_readw(chip, reg) \
	ioread16((chip)->rtsx->remap_addr + reg)
#define rtsx_writeb(chip, reg, value) \
	iowrite8(value, (chip)->rtsx->remap_addr + reg)
#define rtsx_readb(chip, reg) \
	ioread8((chip)->rtsx->remap_addr + reg)

#define rtsx_read_config_byte(chip, where, val) \
	pci_read_config_byte((chip)->rtsx->pci, where, val)

#define rtsx_write_config_byte(chip, where, val) \
	pci_write_config_byte((chip)->rtsx->pci, where, val)

#define wait_timeout_x(task_state, msecs)	\
do {						\
	set_current_state((task_state));	\
	schedule_timeout((msecs) * HZ / 1000);	\
} while (0)
#define wait_timeout(msecs)	wait_timeout_x(TASK_INTERRUPTIBLE, (msecs))

#define STATE_TRANS_NONE	0
#define STATE_TRANS_CMD		1
#define STATE_TRANS_BUF		2
#define STATE_TRANS_SG		3

#define TRANS_NOT_READY		0
#define TRANS_RESULT_OK		1
#define TRANS_RESULT_FAIL	2

#define SCSI_LUN(srb)		((srb)->device->lun)

struct rtsx_chip;

struct rtsx_dev {
	struct pci_dev *pci;

	/* pci resources */
	unsigned long		addr;
	void __iomem		*remap_addr;
	int irq;

	/* locks */
	spinlock_t		reg_lock;

	struct task_struct	*ctl_thread;	 /* the control thread   */
	struct task_struct	*polling_thread; /* the polling thread   */

	/* mutual exclusion and synchronization structures */
	struct completion	cmnd_ready;	 /* to sleep thread on	    */
	struct completion	control_exit;	 /* control thread exit	    */
	struct completion	polling_exit;	 /* polling thread exit	    */
	struct completion	notify;		 /* thread begin/end	    */
	struct completion	scanning_done;	 /* wait for scan thread    */

	wait_queue_head_t	delay_wait;	 /* wait during scan, reset */
	struct mutex		dev_mutex;

	/* host reserved buffer */
	void			*rtsx_resv_buf;
	dma_addr_t		rtsx_resv_buf_addr;

	char			trans_result;
	char			trans_state;

	struct completion	*done;
	/* Whether interrupt handler should care card cd info */
	u32			check_card_cd;

	struct rtsx_chip	*chip;
};

/* Convert between rtsx_dev and the corresponding Scsi_Host */
static inline struct Scsi_Host *rtsx_to_host(struct rtsx_dev *dev)
{
	return container_of((void *)dev, struct Scsi_Host, hostdata);
}

static inline struct rtsx_dev *host_to_rtsx(struct Scsi_Host *host)
{
	return (struct rtsx_dev *)host->hostdata;
}

static inline void get_current_time(u8 *timeval_buf, int buf_len)
{
	struct timespec64 ts64;
	u32 tv_usec;

	if (!timeval_buf || (buf_len < 8))
		return;

	getnstimeofday64(&ts64);

	tv_usec = ts64.tv_nsec/NSEC_PER_USEC;

	timeval_buf[0] = (u8)(ts64.tv_sec >> 24);
	timeval_buf[1] = (u8)(ts64.tv_sec >> 16);
	timeval_buf[2] = (u8)(ts64.tv_sec >> 8);
	timeval_buf[3] = (u8)(ts64.tv_sec);
	timeval_buf[4] = (u8)(tv_usec >> 24);
	timeval_buf[5] = (u8)(tv_usec >> 16);
	timeval_buf[6] = (u8)(tv_usec >> 8);
	timeval_buf[7] = (u8)(tv_usec);
}

/*
 * The scsi_lock() and scsi_unlock() macros protect the sm_state and the
 * single queue element srb for write access
 */
#define scsi_unlock(host)	spin_unlock_irq(host->host_lock)
#define scsi_lock(host)		spin_lock_irq(host->host_lock)

#define lock_state(chip)	spin_lock_irq(&((chip)->rtsx->reg_lock))
#define unlock_state(chip)	spin_unlock_irq(&((chip)->rtsx->reg_lock))

/* struct scsi_cmnd transfer buffer access utilities */
enum xfer_buf_dir	{TO_XFER_BUF, FROM_XFER_BUF};

int rtsx_read_pci_cfg_byte(u8 bus, u8 dev, u8 func, u8 offset, u8 *val);

#define _MSG_TRACE

#include "trace.h"
#include "rtsx_chip.h"
#include "rtsx_transport.h"
#include "rtsx_scsi.h"
#include "rtsx_card.h"
#include "rtsx_sys.h"
#include "general.h"

#endif  /* __REALTEK_RTSX_H */
Commit	Line	Data
fa590c22 MC	1	/* Driver for Realtek PCI-Express card reader
	2	* Header file
	3	*
	4	* Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2, or (at your option) any
	9	* later version.
	10	*
	11	* This program is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; if not, see <http://www.gnu.org/licenses/>.
	18	*
	19	* Author:
	20	* Wei WANG (wei_wang@realsil.com.cn)
	21	* Micky Ching (micky_ching@realsil.com.cn)
	22	*/
	23
	24	#ifndef __REALTEK_RTSX_H
	25	#define __REALTEK_RTSX_H
	26
	27	#include <linux/io.h>
	28	#include <linux/bitops.h>
	29	#include <linux/delay.h>
	30	#include <linux/interrupt.h>
	31	#include <linux/kernel.h>
	32	#include <linux/module.h>
	33	#include <linux/moduleparam.h>
fa590c22 MC	34	#include <linux/slab.h>
	35	#include <linux/pci.h>
	36	#include <linux/mutex.h>
	37	#include <linux/cdrom.h>
	38	#include <linux/workqueue.h>
	39	#include <linux/timer.h>
d5a7d45f	40	#include <linux/time64.h>
fa590c22 MC	41
	42	#include <scsi/scsi.h>
	43	#include <scsi/scsi_cmnd.h>
	44	#include <scsi/scsi_device.h>
	45	#include <scsi/scsi_devinfo.h>
	46	#include <scsi/scsi_eh.h>
	47	#include <scsi/scsi_host.h>
	48
fa590c22 MC	49	#define CR_DRIVER_NAME "rts5208"
fa590c22 MC	50
fa590c22 MC	51	/*
	52	* macros for easy use
	53	*/
	54	#define rtsx_writel(chip, reg, value) \
	55	iowrite32(value, (chip)->rtsx->remap_addr + reg)
	56	#define rtsx_readl(chip, reg) \
	57	ioread32((chip)->rtsx->remap_addr + reg)
	58	#define rtsx_writew(chip, reg, value) \
	59	iowrite16(value, (chip)->rtsx->remap_addr + reg)
	60	#define rtsx_readw(chip, reg) \
	61	ioread16((chip)->rtsx->remap_addr + reg)
	62	#define rtsx_writeb(chip, reg, value) \
	63	iowrite8(value, (chip)->rtsx->remap_addr + reg)
	64	#define rtsx_readb(chip, reg) \
	65	ioread8((chip)->rtsx->remap_addr + reg)
	66
	67	#define rtsx_read_config_byte(chip, where, val) \
	68	pci_read_config_byte((chip)->rtsx->pci, where, val)
	69
	70	#define rtsx_write_config_byte(chip, where, val) \
	71	pci_write_config_byte((chip)->rtsx->pci, where, val)
	72
bd778ef0 RS	73	#define wait_timeout_x(task_state, msecs) \
	74	do { \
	75	set_current_state((task_state)); \
	76	schedule_timeout((msecs) * HZ / 1000); \
fa590c22 MC	77	} while (0)
	78	#define wait_timeout(msecs) wait_timeout_x(TASK_INTERRUPTIBLE, (msecs))
	79
fa590c22 MC	80	#define STATE_TRANS_NONE 0
	81	#define STATE_TRANS_CMD 1
	82	#define STATE_TRANS_BUF 2
	83	#define STATE_TRANS_SG 3
	84
	85	#define TRANS_NOT_READY 0
	86	#define TRANS_RESULT_OK 1
	87	#define TRANS_RESULT_FAIL 2
	88
	89	#define SCSI_LUN(srb) ((srb)->device->lun)
	90
fa590c22 MC	91	struct rtsx_chip;
	92
	93	struct rtsx_dev {
	94	struct pci_dev *pci;
	95
	96	/* pci resources */
	97	unsigned long addr;
	98	void __iomem *remap_addr;
	99	int irq;
	100
	101	/* locks */
	102	spinlock_t reg_lock;
	103
	104	struct task_struct ctl_thread; / the control thread */
	105	struct task_struct polling_thread; / the polling thread */
	106
	107	/* mutual exclusion and synchronization structures */
	108	struct completion cmnd_ready; /* to sleep thread on */
	109	struct completion control_exit; /* control thread exit */
	110	struct completion polling_exit; /* polling thread exit */
	111	struct completion notify; /* thread begin/end */
	112	struct completion scanning_done; /* wait for scan thread */
	113
	114	wait_queue_head_t delay_wait; /* wait during scan, reset */
	115	struct mutex dev_mutex;
	116
	117	/* host reserved buffer */
	118	void *rtsx_resv_buf;
	119	dma_addr_t rtsx_resv_buf_addr;
	120
	121	char trans_result;
	122	char trans_state;
	123
	124	struct completion *done;
	125	/* Whether interrupt handler should care card cd info */
	126	u32 check_card_cd;
	127
	128	struct rtsx_chip *chip;
	129	};
	130
fa590c22 MC	131	/* Convert between rtsx_dev and the corresponding Scsi_Host */
	132	static inline struct Scsi_Host rtsx_to_host(struct rtsx_dev dev)
	133	{
7c7f2361	134	return container_of((void *)dev, struct Scsi_Host, hostdata);
fa590c22	135	}
d5b7d2b0	136
fa590c22 MC	137	static inline struct rtsx_dev host_to_rtsx(struct Scsi_Host host)
fa590c22 MC	138	{
7c7f2361	139	return (struct rtsx_dev *)host->hostdata;
fa590c22 MC	140	}
	141
	142	static inline void get_current_time(u8 *timeval_buf, int buf_len)
	143	{
d5a7d45f KS	144	struct timespec64 ts64;
d5a7d45f KS	145	u32 tv_usec;
fa590c22 MC	146
	147	if (!timeval_buf \|\| (buf_len < 8))
	148	return;
	149
d5a7d45f	150	getnstimeofday64(&ts64);
fa590c22	151
d5a7d45f KS	152	tv_usec = ts64.tv_nsec/NSEC_PER_USEC;
	153
	154	timeval_buf[0] = (u8)(ts64.tv_sec >> 24);
	155	timeval_buf[1] = (u8)(ts64.tv_sec >> 16);
	156	timeval_buf[2] = (u8)(ts64.tv_sec >> 8);
	157	timeval_buf[3] = (u8)(ts64.tv_sec);
	158	timeval_buf[4] = (u8)(tv_usec >> 24);
	159	timeval_buf[5] = (u8)(tv_usec >> 16);
	160	timeval_buf[6] = (u8)(tv_usec >> 8);
	161	timeval_buf[7] = (u8)(tv_usec);
fa590c22 MC	162	}
fa590c22 MC	163
55e94ccb SP	164	/*
	165	* The scsi_lock() and scsi_unlock() macros protect the sm_state and the
	166	* single queue element srb for write access
	167	*/
fa590c22 MC	168	#define scsi_unlock(host) spin_unlock_irq(host->host_lock)
	169	#define scsi_lock(host) spin_lock_irq(host->host_lock)
	170
	171	#define lock_state(chip) spin_lock_irq(&((chip)->rtsx->reg_lock))
	172	#define unlock_state(chip) spin_unlock_irq(&((chip)->rtsx->reg_lock))
	173
	174	/* struct scsi_cmnd transfer buffer access utilities */
	175	enum xfer_buf_dir {TO_XFER_BUF, FROM_XFER_BUF};
	176
	177	int rtsx_read_pci_cfg_byte(u8 bus, u8 dev, u8 func, u8 offset, u8 *val);
	178
031366ea JP	179	#define _MSG_TRACE
	180
	181	#include "trace.h"
	182	#include "rtsx_chip.h"
	183	#include "rtsx_transport.h"
	184	#include "rtsx_scsi.h"
	185	#include "rtsx_card.h"
	186	#include "rtsx_sys.h"
	187	#include "general.h"
	188
fa590c22	189	#endif /* __REALTEK_RTSX_H */