Quelle aic79xx_osm.h
Sprache: C
/*
* Adaptec AIC79xx device driver for Linux .
*
* Copyright ( c ) 2000 - 2001 Adaptec Inc .
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
* 1 . Redistributions of source code must retain the above copyright
* notice , this list of conditions , and the following disclaimer ,
* without modification .
* 2 . Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the " NO WARRANTY " disclaimer below
* ( " Disclaimer " ) and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution .
* 3 . Neither the names of the above - listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission .
*
* Alternatively , this software may be distributed under the terms of the
* GNU General Public License ( " GPL " ) version 2 as published by the Free
* Software Foundation .
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL , EXEMPLARY , OR CONSEQUENTIAL
* DAMAGES ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION )
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT ,
* STRICT LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES .
*
* $ Id : //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.h#166 $
*
*/
#ifndef _AIC79XX_LINUX_H_
#define _AIC79XX_LINUX_H_
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm /byteorder.h>
#include <asm /io.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>
/* Core SCSI definitions */
#define AIC_LIB_PREFIX ahd
#include "cam.h"
#include "queue.h"
#include "scsi_message.h"
#include "scsi_iu.h"
#include "aiclib.h"
/*********************************** Debugging ********************************/
#ifdef CONFIG_AIC79XX_DEBUG_ENABLE
#ifdef CONFIG_AIC79XX_DEBUG_MASK
#define AHD_DEBUG 1
#define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK
#else
/*
* Compile in debugging code , but do not enable any printfs .
*/
#define AHD_DEBUG 1
#define AHD_DEBUG_OPTS 0
#endif
/* No debugging code. */
#endif
/********************************** Misc Macros *******************************/
#define powerof2(x) ((((x)-1 )&(x))==0 )
/************************* Forward Declarations *******************************/
struct ahd_softc;
typedef struct pci_dev *ahd_dev_softc_t;
typedef struct scsi_cmnd *ahd_io_ctx_t;
/******************************* Byte Order ***********************************/
#define ahd_htobe16(x) cpu_to_be16(x)
#define ahd_htobe32(x) cpu_to_be32(x)
#define ahd_htobe64(x) cpu_to_be64(x)
#define ahd_htole16(x) cpu_to_le16(x)
#define ahd_htole32(x) cpu_to_le32(x)
#define ahd_htole64(x) cpu_to_le64(x)
#define ahd_be16toh(x) be16_to_cpu(x)
#define ahd_be32toh(x) be32_to_cpu(x)
#define ahd_be64toh(x) be64_to_cpu(x)
#define ahd_le16toh(x) le16_to_cpu(x)
#define ahd_le32toh(x) le32_to_cpu(x)
#define ahd_le64toh(x) le64_to_cpu(x)
/************************* Configuration Data *********************************/
extern uint32_t aic79xx_allow_memio;
extern struct scsi_host_template aic79xx_driver_template;
/***************************** Bus Space/DMA **********************************/
typedef uint32_t bus_size_t;
typedef enum {
BUS_SPACE_MEMIO,
BUS_SPACE_PIO
} bus_space_tag_t;
typedef union {
u_long ioport;
volatile uint8_t __iomem *maddr;
} bus_space_handle_t;
typedef struct bus_dma_segment
{
dma_addr_t ds_addr;
bus_size_t ds_len;
} bus_dma_segment_t;
struct ahd_linux_dma_tag
{
bus_size_t alignment;
bus_size_t boundary;
bus_size_t maxsize;
};
typedef struct ahd_linux_dma_tag* bus_dma_tag_t;
typedef dma_addr_t bus_dmamap_t;
typedef int bus_dma_filter_t(void *, dma_addr_t);
typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int , int );
#define BUS_DMA_WAITOK 0 x0
#define BUS_DMA_NOWAIT 0 x1
#define BUS_DMA_ALLOCNOW 0 x2
#define BUS_DMA_LOAD_SEGS 0 x4 /*
* Argument is an S / G list not
* a single buffer .
*/
#define BUS_SPACE_MAXADDR 0 xFFFFFFFF
#define BUS_SPACE_MAXADDR_32BIT 0 xFFFFFFFF
#define BUS_SPACE_MAXSIZE_32BIT 0 xFFFFFFFF
int ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/,
bus_size_t /*alignment*/, bus_size_t /*boundary*/,
dma_addr_t /*lowaddr*/, dma_addr_t /*highaddr*/,
bus_dma_filter_t*/*filter*/, void */*filterarg*/,
bus_size_t /*maxsize*/, int /*nsegments*/,
bus_size_t /*maxsegsz*/, int /*flags*/,
bus_dma_tag_t */*dma_tagp*/);
void ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/);
int ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
void ** /*vaddr*/, int /*flags*/,
bus_dmamap_t* /*mapp*/);
void ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
void * /*vaddr*/, bus_dmamap_t /*map*/);
void ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/,
bus_dmamap_t /*map*/);
int ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/,
bus_dmamap_t /*map*/, void * /*buf*/,
bus_size_t /*buflen*/, bus_dmamap_callback_t *,
void */*callback_arg*/, int /*flags*/);
int ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t);
/*
* Operations performed by ahd_dmamap_sync ( ) .
*/
#define BUS_DMASYNC_PREREAD 0 x01 /* pre-read synchronization */
#define BUS_DMASYNC_POSTREAD 0 x02 /* post-read synchronization */
#define BUS_DMASYNC_PREWRITE 0 x04 /* pre-write synchronization */
#define BUS_DMASYNC_POSTWRITE 0 x08 /* post-write synchronization */
/*
* XXX
* ahd_dmamap_sync is only used on buffers allocated with
* the dma_alloc_coherent ( ) API . Although I ' m not sure how
* this works on architectures with a write buffer , Linux does
* not have an API to sync " coherent " memory . Perhaps we need
* to do an mb ( ) ?
*/
#define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)
/********************************** Includes **********************************/
#ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT
#define AIC_DEBUG_REGISTERS 1
#else
#define AIC_DEBUG_REGISTERS 0
#endif
#include "aic79xx.h"
/***************************** SMP support ************************************/
#include <linux/spinlock.h>
#define AIC79XX_DRIVER_VERSION "3.0"
/*************************** Device Data Structures ***************************/
/*
* A per probed device structure used to deal with some error recovery
* scenarios that the Linux mid - layer code just doesn ' t know how to
* handle . The structure allocated for a device only becomes persistent
* after a successfully completed inquiry command to the target when
* that inquiry data indicates a lun is present .
*/
typedef enum {
AHD_DEV_FREEZE_TIL_EMPTY = 0 x02, /* Freeze queue until active == 0 */
AHD_DEV_Q_BASIC = 0 x10, /* Allow basic device queuing */
AHD_DEV_Q_TAGGED = 0 x20, /* Allow full SCSI2 command queueing */
AHD_DEV_PERIODIC_OTAG = 0 x40, /* Send OTAG to prevent starvation */
} ahd_linux_dev_flags;
struct ahd_linux_device {
TAILQ_ENTRY(ahd_linux_device) links;
/*
* The number of transactions currently
* queued to the device .
*/
int active;
/*
* The currently allowed number of
* transactions that can be queued to
* the device . Must be signed for
* conversion from tagged to untagged
* mode where the device may have more
* than one outstanding active transaction .
*/
int openings;
/*
* A positive count indicates that this
* device ' s queue is halted .
*/
u_int qfrozen;
/*
* Cumulative command counter .
*/
u_long commands_issued;
/*
* The number of tagged transactions when
* running at our current opening level
* that have been successfully received by
* this device since the last QUEUE FULL .
*/
u_int tag_success_count;
#define AHD_TAG_SUCCESS_INTERVAL 50
ahd_linux_dev_flags flags;
/*
* Per device timer .
*/
struct timer_list timer;
/*
* The high limit for the tags variable .
*/
u_int maxtags;
/*
* The computed number of tags outstanding
* at the time of the last QUEUE FULL event .
*/
u_int tags_on_last_queuefull;
/*
* How many times we have seen a queue full
* with the same number of tags . This is used
* to stop our adaptive queue depth algorithm
* on devices with a fixed number of tags .
*/
u_int last_queuefull_same_count;
#define AHD_LOCK_TAGS_COUNT 50
/*
* How many transactions have been queued
* without the device going idle . We use
* this statistic to determine when to issue
* an ordered tag to prevent transaction
* starvation . This statistic is only updated
* if the AHD_DEV_PERIODIC_OTAG flag is set
* on this device .
*/
u_int commands_since_idle_or_otag;
#define AHD_OTAG_THRESH 500
};
/********************* Definitions Required by the Core ***********************/
/*
* Number of SG segments we require . So long as the S / G segments for
* a particular transaction are allocated in a physically contiguous
* manner and are allocated below 4 GB , the number of S / G segments is
* unrestricted .
*/
#define AHD_NSEG 128
/*
* Per - SCB OSM storage .
*/
struct scb_platform_data {
struct ahd_linux_device *dev;
dma_addr_t buf_busaddr;
uint32_t xfer_len;
uint32_t sense_resid; /* Auto-Sense residual */
};
/*
* Define a structure used for each host adapter . All members are
* aligned on a boundary > = the size of the member to honor the
* alignment restrictions of the various platforms supported by
* this driver .
*/
struct ahd_platform_data {
/*
* Fields accessed from interrupt context .
*/
struct scsi_target *starget[AHD_NUM_TARGETS];
spinlock_t spin_lock;
struct completion *eh_done;
struct Scsi_Host *host; /* pointer to scsi host */
#define AHD_LINUX_NOIRQ ((uint32_t)~0 )
uint32_t irq; /* IRQ for this adapter */
uint32_t bios_address;
resource_size_t mem_busaddr; /* Mem Base Addr */
};
void ahd_delay(long );
/***************************** Low Level I/O **********************************/
uint8_t ahd_inb(struct ahd_softc * ahd, long port);
void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val);
void ahd_outw_atomic(struct ahd_softc * ahd,
long port, uint16_t val);
void ahd_outsb(struct ahd_softc * ahd, long port,
uint8_t *, int count);
void ahd_insb(struct ahd_softc * ahd, long port,
uint8_t *, int count);
/**************************** Initialization **********************************/
int ahd_linux_register_host(struct ahd_softc *,
struct scsi_host_template *);
/******************************** Locking *************************************/
static inline void
ahd_lockinit(struct ahd_softc *ahd)
{
spin_lock_init(&ahd->platform_data->spin_lock);
}
static inline void
ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
{
spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags);
}
static inline void
ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
{
spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags);
}
/******************************* PCI Definitions ******************************/
/*
* PCIM_xxx : mask to locate subfield in register
* PCIR_xxx : config register offset
* PCIC_xxx : device class
* PCIS_xxx : device subclass
* PCIP_xxx : device programming interface
* PCIV_xxx : PCI vendor ID ( only required to fixup ancient devices )
* PCID_xxx : device ID
*/
#define PCIR_DEVVENDOR 0 x00
#define PCIR_VENDOR 0 x00
#define PCIR_DEVICE 0 x02
#define PCIR_COMMAND 0 x04
#define PCIM_CMD_PORTEN 0 x0001
#define PCIM_CMD_MEMEN 0 x0002
#define PCIM_CMD_BUSMASTEREN 0 x0004
#define PCIM_CMD_MWRICEN 0 x0010
#define PCIM_CMD_PERRESPEN 0 x0040
#define PCIM_CMD_SERRESPEN 0 x0100
#define PCIR_STATUS 0 x06
#define PCIR_REVID 0 x08
#define PCIR_PROGIF 0 x09
#define PCIR_SUBCLASS 0 x0a
#define PCIR_CLASS 0 x0b
#define PCIR_CACHELNSZ 0 x0c
#define PCIR_LATTIMER 0 x0d
#define PCIR_HEADERTYPE 0 x0e
#define PCIM_MFDEV 0 x80
#define PCIR_BIST 0 x0f
#define PCIR_CAP_PTR 0 x34
/* config registers for header type 0 devices */
#define PCIR_MAPS 0 x10
/****************************** PCI-X definitions *****************************/
#define PCIXR_COMMAND 0 x96
#define PCIXR_DEVADDR 0 x98
#define PCIXM_DEVADDR_FNUM 0 x0003 /* Function Number */
#define PCIXM_DEVADDR_DNUM 0 x00F8 /* Device Number */
#define PCIXM_DEVADDR_BNUM 0 xFF00 /* Bus Number */
#define PCIXR_STATUS 0 x9A
#define PCIXM_STATUS_64BIT 0 x0001 /* Active 64bit connection to device. */
#define PCIXM_STATUS_133CAP 0 x0002 /* Device is 133MHz capable */
#define PCIXM_STATUS_SCDISC 0 x0004 /* Split Completion Discarded */
#define PCIXM_STATUS_UNEXPSC 0 x0008 /* Unexpected Split Completion */
#define PCIXM_STATUS_CMPLEXDEV 0 x0010 /* Device Complexity (set == bridge) */
#define PCIXM_STATUS_MAXMRDBC 0 x0060 /* Maximum Burst Read Count */
#define PCIXM_STATUS_MAXSPLITS 0 x0380 /* Maximum Split Transactions */
#define PCIXM_STATUS_MAXCRDS 0 x1C00 /* Maximum Cumulative Read Size */
#define PCIXM_STATUS_RCVDSCEM 0 x2000 /* Received a Split Comp w/Error msg */
typedef enum
{
AHD_POWER_STATE_D0,
AHD_POWER_STATE_D1,
AHD_POWER_STATE_D2,
AHD_POWER_STATE_D3
} ahd_power_state;
void ahd_power_state_change(struct ahd_softc *ahd,
ahd_power_state new_state);
/******************************* PCI Routines *********************************/
int ahd_linux_pci_init(void );
void ahd_linux_pci_exit(void );
int ahd_pci_map_registers(struct ahd_softc *ahd);
int ahd_pci_map_int(struct ahd_softc *ahd);
uint32_t ahd_pci_read_config(ahd_dev_softc_t pci,
int reg, int width);
void ahd_pci_write_config(ahd_dev_softc_t pci,
int reg, uint32_t value,
int width);
static inline int ahd_get_pci_function(ahd_dev_softc_t);
static inline int
ahd_get_pci_function(ahd_dev_softc_t pci)
{
return (PCI_FUNC(pci->devfn));
}
static inline int ahd_get_pci_slot(ahd_dev_softc_t);
static inline int
ahd_get_pci_slot(ahd_dev_softc_t pci)
{
return (PCI_SLOT(pci->devfn));
}
static inline int ahd_get_pci_bus(ahd_dev_softc_t);
static inline int
ahd_get_pci_bus(ahd_dev_softc_t pci)
{
return (pci->bus->number);
}
static inline void ahd_flush_device_writes(struct ahd_softc *);
static inline void
ahd_flush_device_writes(struct ahd_softc *ahd)
{
/* XXX Is this sufficient for all architectures??? */
ahd_inb(ahd, INTSTAT);
}
/**************************** Proc FS Support *********************************/
int ahd_proc_write_seeprom(struct Scsi_Host *, char *, int );
int ahd_linux_show_info(struct seq_file *,struct Scsi_Host *);
/*********************** Transaction Access Wrappers **************************/
static inline
void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
{
cmd->result &= ~(CAM_STATUS_MASK << 16 );
cmd->result |= status << 16 ;
}
static inline
void ahd_set_transaction_status(struct scb *scb, uint32_t status)
{
ahd_cmd_set_transaction_status(scb->io_ctx,status);
}
static inline
void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
{
cmd->result &= ~0 xFFFF;
cmd->result |= status;
}
static inline
void ahd_set_scsi_status(struct scb *scb, uint32_t status)
{
ahd_cmd_set_scsi_status(scb->io_ctx, status);
}
static inline
uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd)
{
return ((cmd->result >> 16 ) & CAM_STATUS_MASK);
}
static inline
uint32_t ahd_get_transaction_status(struct scb *scb)
{
return (ahd_cmd_get_transaction_status(scb->io_ctx));
}
static inline
uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd)
{
return (cmd->result & 0 xFFFF);
}
static inline
uint32_t ahd_get_scsi_status(struct scb *scb)
{
return (ahd_cmd_get_scsi_status(scb->io_ctx));
}
static inline
void ahd_set_transaction_tag(struct scb *scb, int enabled, u_int type)
{
/*
* Nothing to do for linux as the incoming transaction
* has no concept of tag / non tagged , etc .
*/
}
static inline
u_long ahd_get_transfer_length(struct scb *scb)
{
return (scb->platform_data->xfer_len);
}
static inline
int ahd_get_transfer_dir(struct scb *scb)
{
return (scb->io_ctx->sc_data_direction);
}
static inline
void ahd_set_residual(struct scb *scb, u_long resid)
{
scsi_set_resid(scb->io_ctx, resid);
}
static inline
void ahd_set_sense_residual(struct scb *scb, u_long resid)
{
scb->platform_data->sense_resid = resid;
}
static inline
u_long ahd_get_residual(struct scb *scb)
{
return scsi_get_resid(scb->io_ctx);
}
static inline
u_long ahd_get_sense_residual(struct scb *scb)
{
return (scb->platform_data->sense_resid);
}
static inline
int ahd_perform_autosense(struct scb *scb)
{
/*
* We always perform autosense in Linux .
* On other platforms this is set on a
* per - transaction basis .
*/
return (1 );
}
static inline uint32_t
ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb)
{
return (sizeof (struct scsi_sense_data));
}
static inline void
ahd_notify_xfer_settings_change(struct ahd_softc *ahd,
struct ahd_devinfo *devinfo)
{
/* Nothing to do here for linux */
}
static inline void
ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
{
ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
}
int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
void ahd_platform_free(struct ahd_softc *ahd);
void ahd_platform_init(struct ahd_softc *ahd);
void ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
static inline void
ahd_freeze_scb(struct scb *scb)
{
if ((scb->io_ctx->result & (CAM_DEV_QFRZN << 16 )) == 0 ) {
scb->io_ctx->result |= CAM_DEV_QFRZN << 16 ;
scb->platform_data->dev->qfrozen++;
}
}
void ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
struct ahd_devinfo *devinfo, ahd_queue_alg);
int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
char channel, int lun, u_int tag,
role_t role, uint32_t status);
irqreturn_t
ahd_linux_isr(int irq, void *dev_id);
void ahd_done(struct ahd_softc*, struct scb*);
void ahd_send_async(struct ahd_softc *, char channel,
u_int target, u_int lun, ac_code);
void ahd_print_path(struct ahd_softc *, struct scb *);
#ifdef CONFIG_PCI
#define AHD_PCI_CONFIG 1
#else
#define AHD_PCI_CONFIG 0
#endif
#define bootverbose aic79xx_verbose
extern uint32_t aic79xx_verbose;
#endif /* _AIC79XX_LINUX_H_ */
Messung V0.5 in Prozent C=95 H=97 G=95
¤ Dauer der Verarbeitung: 0.18 Sekunden
(vorverarbeitet am 2026-10-11)
¤
*© Formatika GbR, Deutschland
2026-10-11
Neuigkeiten
Aktuelles
Motto des Tages
Open Source Software
Jenseits des Üblichen ....
Besucherstatistik
Statistik
#Sources=1127926
#Domains=2039723