drivers/scsi/sym53c8xx_2/sym_glue.h - kernel/mindspeed - Git at Google

 /*
  * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
  * of PCI-SCSI IO processors.
  *
  * Copyright (C) 1999-2001  Gerard Roudier <groudier@free.fr>
  *
  * This driver is derived from the Linux sym53c8xx driver.
  * Copyright (C) 1998-2000  Gerard Roudier
  *
  * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
  * a port of the FreeBSD ncr driver to Linux-1.2.13.
  *
  * The original ncr driver has been written for 386bsd and FreeBSD by
  *         Wolfgang Stanglmeier        <wolf@cologne.de>
  *         Stefan Esser                <se@mi.Uni-Koeln.de>
  * Copyright (C) 1994  Wolfgang Stanglmeier
  *
  * Other major contributions:
  *
  * NVRAM detection and reading.
  * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
  *
  *-----------------------------------------------------------------------------
  *
  * 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, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */

 #ifndef SYM_GLUE_H
 #define SYM_GLUE_H

 #include <linux/completion.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/pci.h>
 #include <linux/string.h>
 #include <linux/timer.h>
 #include <linux/types.h>

 #include <asm/io.h>
 #ifdef __sparc__
 #  include <asm/irq.h>
 #endif

 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_transport_spi.h>
 #include <scsi/scsi_host.h>

 #include "sym53c8xx.h"
 #include "sym_defs.h"
 #include "sym_misc.h"

 /*
  * Configuration addendum for Linux.
  */
 #define	SYM_CONF_TIMER_INTERVAL		((HZ+1)/2)

 #undef SYM_OPT_HANDLE_DEVICE_QUEUEING
 #define SYM_OPT_LIMIT_COMMAND_REORDERING

 /*
  *  Print a message with severity.
  */
 #define printf_emerg(args...)	printk(KERN_EMERG args)
 #define	printf_alert(args...)	printk(KERN_ALERT args)
 #define	printf_crit(args...)	printk(KERN_CRIT args)
 #define	printf_err(args...)	printk(KERN_ERR	args)
 #define	printf_warning(args...)	printk(KERN_WARNING args)
 #define	printf_notice(args...)	printk(KERN_NOTICE args)
 #define	printf_info(args...)	printk(KERN_INFO args)
 #define	printf_debug(args...)	printk(KERN_DEBUG args)
 #define	printf(args...)		printk(args)

 /*
  *  A 'read barrier' flushes any data that have been prefetched
  *  by the processor due to out of order execution. Such a barrier
  *  must notably be inserted prior to looking at data that have
  *  been DMAed, assuming that program does memory READs in proper
  *  order and that the device ensured proper ordering of WRITEs.
  *
  *  A 'write barrier' prevents any previous WRITEs to pass further
  *  WRITEs. Such barriers must be inserted each time another agent
  *  relies on ordering of WRITEs.
  *
  *  Note that, due to posting of PCI memory writes, we also must
  *  insert dummy PCI read transactions when some ordering involving
  *  both directions over the PCI does matter. PCI transactions are
  *  fully ordered in each direction.
  */

 #define MEMORY_READ_BARRIER()	rmb()
 #define MEMORY_WRITE_BARRIER()	wmb()

 /*
  *  IO functions definition for big/little endian CPU support.
  *  For now, PCI chips are only supported in little endian addressing mode,
  */

 #ifdef	__BIG_ENDIAN

 #define	readw_l2b	readw
 #define	readl_l2b	readl
 #define	writew_b2l	writew
 #define	writel_b2l	writel

 #else	/* little endian */

 #define	readw_raw	readw
 #define	readl_raw	readl
 #define	writew_raw	writew
 #define	writel_raw	writel

 #endif /* endian */

 #ifdef	SYM_CONF_CHIP_BIG_ENDIAN
 #error	"Chips in BIG ENDIAN addressing mode are not (yet) supported"
 #endif

 /*
  *  If the CPU and the chip use same endian-ness addressing,
  *  no byte reordering is needed for script patching.
  *  Macro cpu_to_scr() is to be used for script patching.
  *  Macro scr_to_cpu() is to be used for getting a DWORD
  *  from the script.
  */

 #define cpu_to_scr(dw)	cpu_to_le32(dw)
 #define scr_to_cpu(dw)	le32_to_cpu(dw)

 /*
  *  These ones are used as return code from
  *  error recovery handlers under Linux.
  */
 #define SCSI_SUCCESS	SUCCESS
 #define SCSI_FAILED	FAILED

 /*
  *  System specific target data structure.
  *  None for now, under Linux.
  */
 /* #define SYM_HAVE_STCB */

 /*
  *  System specific lun data structure.
  */
 #define SYM_HAVE_SLCB
 struct sym_slcb {
 	u_short	reqtags;	/* Number of tags requested by user */
 	u_short scdev_depth;	/* Queue depth set in select_queue_depth() */
 };

 /*
  *  System specific command data structure.
  *  Not needed under Linux.
  */
 /* struct sym_sccb */

 /*
  *  System specific host data structure.
  */
 struct sym_shcb {
 	/*
 	 *  Chip and controller indentification.
 	 */
 	int		unit;
 	char		inst_name[16];
 	char		chip_name[8];

 	struct Scsi_Host *host;

 	void __iomem *	ioaddr;		/* MMIO kernel io address	*/
 	void __iomem *	ramaddr;	/* RAM  kernel io address	*/

 	struct timer_list timer;	/* Timer handler link header	*/
 	u_long		lasttime;
 	u_long		settle_time;	/* Resetting the SCSI BUS	*/
 	u_char		settle_time_valid;
 };

 /*
  *  Return the name of the controller.
  */
 #define sym_name(np) (np)->s.inst_name

 struct sym_nvram;

 /*
  * The IO macros require a struct called 's' and are abused in sym_nvram.c
  */
 struct sym_device {
 	struct pci_dev *pdev;
 	unsigned long mmio_base;
 	unsigned long ram_base;
 	struct {
 		void __iomem *ioaddr;
 		void __iomem *ramaddr;
 	} s;
 	struct sym_chip chip;
 	struct sym_nvram *nvram;
 	u_char host_id;
 };

 /*
  *  Driver host data structure.
  */
 struct sym_data {
 	struct sym_hcb *ncb;
 	struct completion *io_reset;		/* PCI error handling */
 	struct pci_dev *pdev;
 };

 static inline struct sym_hcb * sym_get_hcb(struct Scsi_Host *host)
 {
 	return ((struct sym_data *)host->hostdata)->ncb;
 }

 #include "sym_fw.h"
 #include "sym_hipd.h"

 /*
  *  Set the status field of a CAM CCB.
  */
 static inline void
 sym_set_cam_status(struct scsi_cmnd *cmd, int status)
 {
 	cmd->result &= ~(0xff  << 16);
 	cmd->result |= (status << 16);
 }

 /*
  *  Get the status field of a CAM CCB.
  */
 static inline int
 sym_get_cam_status(struct scsi_cmnd *cmd)
 {
 	return host_byte(cmd->result);
 }

 /*
  *  Build CAM result for a successful IO and for a failed IO.
  */
 static inline void sym_set_cam_result_ok(struct sym_ccb *cp, struct scsi_cmnd *cmd, int resid)
 {
 	scsi_set_resid(cmd, resid);
 	cmd->result = (((DID_OK) << 16) + ((cp->ssss_status) & 0x7f));
 }
 void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid);

 void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *ccb);
 #define sym_print_addr(cmd, arg...) dev_info(&cmd->device->sdev_gendev , ## arg)
 void sym_xpt_async_bus_reset(struct sym_hcb *np);
 int  sym_setup_data_and_start (struct sym_hcb *np, struct scsi_cmnd *csio, struct sym_ccb *cp);
 void sym_log_bus_error(struct Scsi_Host *);
 void sym_dump_registers(struct Scsi_Host *);

 #endif /* SYM_GLUE_H */
	/*
	* Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
	* of PCI-SCSI IO processors.
	*
	* Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
	*
	* This driver is derived from the Linux sym53c8xx driver.
	* Copyright (C) 1998-2000 Gerard Roudier
	*
	* The sym53c8xx driver is derived from the ncr53c8xx driver that had been
	* a port of the FreeBSD ncr driver to Linux-1.2.13.
	*
	* The original ncr driver has been written for 386bsd and FreeBSD by
	* Wolfgang Stanglmeier <wolf@cologne.de>
	* Stefan Esser <se@mi.Uni-Koeln.de>
	* Copyright (C) 1994 Wolfgang Stanglmeier
	*
	* Other major contributions:
	*
	* NVRAM detection and reading.
	* Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
	*
	*-----------------------------------------------------------------------------
	*
	* 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, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#ifndef SYM_GLUE_H
	#define SYM_GLUE_H

	#include <linux/completion.h>
	#include <linux/delay.h>
	#include <linux/interrupt.h>
	#include <linux/ioport.h>
	#include <linux/pci.h>
	#include <linux/string.h>
	#include <linux/timer.h>
	#include <linux/types.h>

	#include <asm/io.h>
	#ifdef __sparc__
	# include <asm/irq.h>
	#endif

	#include <scsi/scsi.h>
	#include <scsi/scsi_cmnd.h>
	#include <scsi/scsi_device.h>
	#include <scsi/scsi_transport_spi.h>
	#include <scsi/scsi_host.h>

	#include "sym53c8xx.h"
	#include "sym_defs.h"
	#include "sym_misc.h"

	/*
	* Configuration addendum for Linux.
	*/
	#define SYM_CONF_TIMER_INTERVAL ((HZ+1)/2)

	#undef SYM_OPT_HANDLE_DEVICE_QUEUEING
	#define SYM_OPT_LIMIT_COMMAND_REORDERING

	/*
	* Print a message with severity.
	*/
	#define printf_emerg(args...) printk(KERN_EMERG args)
	#define printf_alert(args...) printk(KERN_ALERT args)
	#define printf_crit(args...) printk(KERN_CRIT args)
	#define printf_err(args...) printk(KERN_ERR args)
	#define printf_warning(args...) printk(KERN_WARNING args)
	#define printf_notice(args...) printk(KERN_NOTICE args)
	#define printf_info(args...) printk(KERN_INFO args)
	#define printf_debug(args...) printk(KERN_DEBUG args)
	#define printf(args...) printk(args)

	/*
	* A 'read barrier' flushes any data that have been prefetched
	* by the processor due to out of order execution. Such a barrier
	* must notably be inserted prior to looking at data that have
	* been DMAed, assuming that program does memory READs in proper
	* order and that the device ensured proper ordering of WRITEs.
	*
	* A 'write barrier' prevents any previous WRITEs to pass further
	* WRITEs. Such barriers must be inserted each time another agent
	* relies on ordering of WRITEs.
	*
	* Note that, due to posting of PCI memory writes, we also must
	* insert dummy PCI read transactions when some ordering involving
	* both directions over the PCI does matter. PCI transactions are
	* fully ordered in each direction.
	*/

	#define MEMORY_READ_BARRIER() rmb()
	#define MEMORY_WRITE_BARRIER() wmb()

	/*
	* IO functions definition for big/little endian CPU support.
	* For now, PCI chips are only supported in little endian addressing mode,
	*/

	#ifdef __BIG_ENDIAN

	#define readw_l2b readw
	#define readl_l2b readl
	#define writew_b2l writew
	#define writel_b2l writel

	#else /* little endian */

	#define readw_raw readw
	#define readl_raw readl
	#define writew_raw writew
	#define writel_raw writel

	#endif /* endian */

	#ifdef SYM_CONF_CHIP_BIG_ENDIAN
	#error "Chips in BIG ENDIAN addressing mode are not (yet) supported"
	#endif

	/*
	* If the CPU and the chip use same endian-ness addressing,
	* no byte reordering is needed for script patching.
	* Macro cpu_to_scr() is to be used for script patching.
	* Macro scr_to_cpu() is to be used for getting a DWORD
	* from the script.
	*/

	#define cpu_to_scr(dw) cpu_to_le32(dw)
	#define scr_to_cpu(dw) le32_to_cpu(dw)

	/*
	* These ones are used as return code from
	* error recovery handlers under Linux.
	*/
	#define SCSI_SUCCESS SUCCESS
	#define SCSI_FAILED FAILED

	/*
	* System specific target data structure.
	* None for now, under Linux.
	*/
	/* #define SYM_HAVE_STCB */

	/*
	* System specific lun data structure.
	*/
	#define SYM_HAVE_SLCB
	struct sym_slcb {
	u_short reqtags; /* Number of tags requested by user */
	u_short scdev_depth; /* Queue depth set in select_queue_depth() */
	};

	/*
	* System specific command data structure.
	* Not needed under Linux.
	*/
	/* struct sym_sccb */

	/*
	* System specific host data structure.
	*/
	struct sym_shcb {
	/*
	* Chip and controller indentification.
	*/
	int unit;
	char inst_name[16];
	char chip_name[8];

	struct Scsi_Host *host;

	void __iomem * ioaddr; /* MMIO kernel io address */
	void __iomem * ramaddr; /* RAM kernel io address */

	struct timer_list timer; /* Timer handler link header */
	u_long lasttime;
	u_long settle_time; /* Resetting the SCSI BUS */
	u_char settle_time_valid;
	};

	/*
	* Return the name of the controller.
	*/
	#define sym_name(np) (np)->s.inst_name

	struct sym_nvram;

	/*
	* The IO macros require a struct called 's' and are abused in sym_nvram.c
	*/
	struct sym_device {
	struct pci_dev *pdev;
	unsigned long mmio_base;
	unsigned long ram_base;
	struct {
	void __iomem *ioaddr;
	void __iomem *ramaddr;
	} s;
	struct sym_chip chip;
	struct sym_nvram *nvram;
	u_char host_id;
	};

	/*
	* Driver host data structure.
	*/
	struct sym_data {
	struct sym_hcb *ncb;
	struct completion io_reset; / PCI error handling */
	struct pci_dev *pdev;
	};

	static inline struct sym_hcb * sym_get_hcb(struct Scsi_Host *host)
	{
	return ((struct sym_data *)host->hostdata)->ncb;
	}

	#include "sym_fw.h"
	#include "sym_hipd.h"

	/*
	* Set the status field of a CAM CCB.
	*/
	static inline void
	sym_set_cam_status(struct scsi_cmnd *cmd, int status)
	{
	cmd->result &= ~(0xff << 16);
	cmd->result \|= (status << 16);
	}

	/*
	* Get the status field of a CAM CCB.
	*/
	static inline int
	sym_get_cam_status(struct scsi_cmnd *cmd)
	{
	return host_byte(cmd->result);
	}

	/*
	* Build CAM result for a successful IO and for a failed IO.
	*/
	static inline void sym_set_cam_result_ok(struct sym_ccb cp, struct scsi_cmnd cmd, int resid)
	{
	scsi_set_resid(cmd, resid);
	cmd->result = (((DID_OK) << 16) + ((cp->ssss_status) & 0x7f));
	}
	void sym_set_cam_result_error(struct sym_hcb np, struct sym_ccb cp, int resid);

	void sym_xpt_done(struct sym_hcb np, struct scsi_cmnd ccb);
	#define sym_print_addr(cmd, arg...) dev_info(&cmd->device->sdev_gendev , ## arg)
	void sym_xpt_async_bus_reset(struct sym_hcb *np);
	int sym_setup_data_and_start (struct sym_hcb np, struct scsi_cmnd csio, struct sym_ccb *cp);
	void sym_log_bus_error(struct Scsi_Host *);
	void sym_dump_registers(struct Scsi_Host *);

	#endif /* SYM_GLUE_H */