44f30b0f59
The upper layer doesn't send these down since 2.4.x (or 2.6 in practice), so no need to handle it. Inline sym_setup_data_pointers into its only caller so we can fail gracefully in the case we'd get one neverless. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
272 lines
7.2 KiB
C
272 lines
7.2 KiB
C
/*
|
|
* 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/config.h>
|
|
#include <linux/delay.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)
|
|
|
|
#define 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 pci_dev *device;
|
|
|
|
struct Scsi_Host *host;
|
|
|
|
void __iomem * ioaddr; /* MMIO kernel io address */
|
|
void __iomem * ramaddr; /* RAM kernel io address */
|
|
u_short io_ws; /* IO window size */
|
|
int irq; /* IRQ number */
|
|
|
|
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_short device_id;
|
|
u_char host_id;
|
|
};
|
|
|
|
/*
|
|
* Driver host data structure.
|
|
*/
|
|
struct host_data {
|
|
struct sym_hcb *ncb;
|
|
};
|
|
|
|
static inline struct sym_hcb * sym_get_hcb(struct Scsi_Host *host)
|
|
{
|
|
return ((struct host_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)
|
|
{
|
|
cmd->resid = 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);
|
|
void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target);
|
|
int sym_setup_data_and_start (struct sym_hcb *np, struct scsi_cmnd *csio, struct sym_ccb *cp);
|
|
void sym_log_bus_error(struct sym_hcb *np);
|
|
|
|
#endif /* SYM_GLUE_H */
|