aic79xx_osm.h

这个linux源代码是很全面的~基本完整了~使用c编译的~由于时间问题我没有亲自测试~但就算用来做参考资料也是非常好的

{
	spin_unlock_irqrestore(&ahd_list_spinlock, *flags);
}

#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) */

ahd_lockinit(struct ahd_softc *ahd)
{
}

static __inline void
ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
{
	*flags = 0;
	save_flags(*flags);
	cli();
}

static __inline void
ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
{
	restore_flags(*flags);
}

ahd_done_lockinit(struct ahd_softc *ahd)
{
}

static __inline void
ahd_done_lock(struct ahd_softc *ahd, unsigned long *flags)
{
	/*
	 * The done lock is always held while
	 * the ahd lock is held so blocking
	 * interrupts again would have no effect.
	 */
}

static __inline void
ahd_done_unlock(struct ahd_softc *ahd, unsigned long *flags)
{
}

static __inline void
ahd_list_lockinit()
{
}

static __inline void
ahd_list_lock(unsigned long *flags)
{
	*flags = 0;
	save_flags(*flags);
	cli();
}

static __inline void
ahd_list_unlock(unsigned long *flags)
{
	restore_flags(*flags);
}
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) */

/******************************* 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		0x00
#define PCIR_VENDOR		0x00
#define PCIR_DEVICE		0x02
#define PCIR_COMMAND		0x04
#define PCIM_CMD_PORTEN		0x0001
#define PCIM_CMD_MEMEN		0x0002
#define PCIM_CMD_BUSMASTEREN	0x0004
#define PCIM_CMD_MWRICEN	0x0010
#define PCIM_CMD_PERRESPEN	0x0040
#define	PCIM_CMD_SERRESPEN	0x0100
#define PCIR_STATUS		0x06
#define PCIR_REVID		0x08
#define PCIR_PROGIF		0x09
#define PCIR_SUBCLASS		0x0a
#define PCIR_CLASS		0x0b
#define PCIR_CACHELNSZ		0x0c
#define PCIR_LATTIMER		0x0d
#define PCIR_HEADERTYPE		0x0e
#define PCIM_MFDEV		0x80
#define PCIR_BIST		0x0f
#define PCIR_CAP_PTR		0x34

/* config registers for header type 0 devices */
#define PCIR_MAPS	0x10
#define PCIR_SUBVEND_0	0x2c
#define PCIR_SUBDEV_0	0x2e

/****************************** PCI-X definitions *****************************/
#define PCIXR_COMMAND	0x96
#define PCIXR_DEVADDR	0x98
#define PCIXM_DEVADDR_FNUM	0x0003	/* Function Number */
#define PCIXM_DEVADDR_DNUM	0x00F8	/* Device Number */
#define PCIXM_DEVADDR_BNUM	0xFF00	/* Bus Number */
#define PCIXR_STATUS	0x9A
#define PCIXM_STATUS_64BIT	0x0001	/* Active 64bit connection to device. */
#define PCIXM_STATUS_133CAP	0x0002	/* Device is 133MHz capable */
#define PCIXM_STATUS_SCDISC	0x0004	/* Split Completion Discarded */
#define PCIXM_STATUS_UNEXPSC	0x0008	/* Unexpected Split Completion */
#define PCIXM_STATUS_CMPLEXDEV	0x0010	/* Device Complexity (set == bridge) */
#define PCIXM_STATUS_MAXMRDBC	0x0060	/* Maximum Burst Read Count */
#define PCIXM_STATUS_MAXSPLITS	0x0380	/* Maximum Split Transactions */
#define PCIXM_STATUS_MAXCRDS	0x1C00	/* Maximum Cumulative Read Size */
#define PCIXM_STATUS_RCVDSCEM	0x2000	/* Received a Split Comp w/Error msg */

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
extern struct pci_driver aic79xx_pci_driver;
#endif

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 *********************************/
/*
 * We need to use the bios32.h routines if we are kernel version 2.1.92 or less.
 */
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,1,92)
#if defined(__sparc_v9__) || defined(__powerpc__)
#error "PPC and Sparc platforms are only support under 2.1.92 and above"
#endif
#include <linux/bios32.h>
#endif

int			 ahd_linux_pci_probe(Scsi_Host_Template *);
int			 ahd_pci_map_registers(struct ahd_softc *ahd);
int			 ahd_pci_map_int(struct ahd_softc *ahd);

static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci,
					     int reg, int width);

static __inline uint32_t
ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width)
{
	switch (width) {
	case 1:
	{
		uint8_t retval;

		pci_read_config_byte(pci, reg, &retval);
		return (retval);
	}
	case 2:
	{
		uint16_t retval;
		pci_read_config_word(pci, reg, &retval);
		return (retval);
	}
	case 4:
	{
		uint32_t retval;
		pci_read_config_dword(pci, reg, &retval);
		return (retval);
	}
	default:
		panic("ahd_pci_read_config: Read size too big");
		/* NOTREACHED */
		return (0);
	}
}

static __inline void ahd_pci_write_config(ahd_dev_softc_t pci,
					  int reg, uint32_t value,
					  int width);

static __inline void
ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width)
{
	switch (width) {
	case 1:
		pci_write_config_byte(pci, reg, value);
		break;
	case 2:
		pci_write_config_word(pci, reg, value);
		break;
	case 4:
		pci_write_config_dword(pci, reg, value);
		break;
	default:
		panic("ahd_pci_write_config: Write size too big");
		/* NOTREACHED */
	}
}

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);
}

#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,0)
#define pci_map_sg(pdev, sg_list, nseg, direction) (nseg)
#define pci_unmap_sg(pdev, sg_list, nseg, direction)
#define sg_dma_address(sg) (VIRT_TO_BUS((sg)->address))
#define sg_dma_len(sg) ((sg)->length)
#define pci_map_single(pdev, buffer, bufflen, direction) \
	(VIRT_TO_BUS(buffer))
#define pci_unmap_single(pdev, buffer, buflen, direction)
#endif

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,3)
#define ahd_pci_set_dma_mask pci_set_dma_mask
#else
/*
 * Always "return" 0 for success.
 */
#define ahd_pci_set_dma_mask(dev_softc, mask)	\
	(((dev_softc)->dma_mask = mask) && 0)
#endif
/*********************** Transaction Access Wrappers **************************/
static __inline void ahd_set_transaction_status(struct scb *, uint32_t);
static __inline
void ahd_set_transaction_status(struct scb *scb, uint32_t status)
{
	scb->io_ctx->result &= ~(CAM_STATUS_MASK << 16);
	scb->io_ctx->result |= status << 16;
}

static __inline void ahd_set_scsi_status(struct scb *, uint32_t);
static __inline
void ahd_set_scsi_status(struct scb *scb, uint32_t status)
{
	scb->io_ctx->result &= ~0xFFFF;
	scb->io_ctx->result |= status;
}

static __inline uint32_t ahd_get_transaction_status(struct scb *);
static __inline
uint32_t ahd_get_transaction_status(struct scb *scb)
{
	return ((scb->io_ctx->result >> 16) & CAM_STATUS_MASK);
}

static __inline uint32_t ahd_get_scsi_status(struct scb *);
static __inline
uint32_t ahd_get_scsi_status(struct scb *scb)
{
	return (scb->io_ctx->result & 0xFFFF);
}

static __inline void ahd_set_transaction_tag(struct scb *, int, u_int);
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 *);
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 *);
static __inline
int ahd_get_transfer_dir(struct scb *scb)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,40)
	return (scb->io_ctx->sc_data_direction);
#else
	if (scb->io_ctx->bufflen == 0)
		return (CAM_DIR_NONE);

	switch(scb->io_ctx->cmnd[0]) {
	case 0x08:  /* READ(6)  */
	case 0x28:  /* READ(10) */
	case 0xA8:  /* READ(12) */
		return (CAM_DIR_IN);
        case 0x0A:  /* WRITE(6)  */
        case 0x2A:  /* WRITE(10) */
        case 0xAA:  /* WRITE(12) */
		return (CAM_DIR_OUT);
        default:
		return (CAM_DIR_NONE);
        }
#endif
}

static __inline void ahd_set_residual(struct scb *, u_long);
static __inline
void ahd_set_residual(struct scb *scb, u_long resid)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
	scb->io_ctx->resid = resid;
#else
	scb->platform_data->resid = resid;
#endif
}

static __inline void ahd_set_sense_residual(struct scb *, u_long);
static __inline
void ahd_set_sense_residual(struct scb *scb, u_long resid)
{
	/* This can't be reported in Linux */
}

static __inline u_long ahd_get_residual(struct scb *);
static __inline
u_long ahd_get_residual(struct scb *scb)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
	return (scb->io_ctx->resid);
#else
	return (scb->platform_data->resid);
#endif
}

static __inline int ahd_perform_autosense(struct scb *);
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 *,
						     struct ahd_devinfo *);
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);
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_freeze_devq(struct ahd_softc *ahd, struct scb *scb);
void	ahd_freeze_simq(struct ahd_softc *ahd);
void	ahd_release_simq(struct ahd_softc *ahd);
static __inline void	ahd_freeze_scb(struct scb *scb);
static __inline void
ahd_freeze_scb(struct scb *scb)
{
	/* Noting to do here for linux */
}

void	ahd_platform_set_tags(struct ahd_softc *ahd,
			      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);
void	ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs);
void	ahd_platform_flushwork(struct ahd_softc *ahd);
int	ahd_softc_comp(struct ahd_softc *, struct ahd_softc *);
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 *);
void	ahd_print_path(struct ahd_softc *, struct scb *);
void	ahd_platform_dump_card_state(struct ahd_softc *ahd);

#ifdef CONFIG_PCI
#define AHD_PCI_CONFIG 1
#else
#define AHD_PCI_CONFIG 0
#endif
#define bootverbose aic79xx_verbose
extern int aic79xx_verbose;
#endif /* _AIC79XX_LINUX_H_ */