aic7xxx_osm.h

优龙2410linux2.6.8内核源代码

#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

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
extern struct pci_driver aic7xxx_pci_driver;
#endif

typedef enum
{
	AHC_POWER_STATE_D0,
	AHC_POWER_STATE_D1,
	AHC_POWER_STATE_D2,
	AHC_POWER_STATE_D3
} ahc_power_state;

/**************************** VL/EISA Routines ********************************/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) \
  && (defined(__i386__) || defined(__alpha__)) \
  && (!defined(CONFIG_EISA)))
#define CONFIG_EISA
#endif

#ifdef CONFIG_EISA
extern uint32_t aic7xxx_probe_eisa_vl;
int			 ahc_linux_eisa_init(void);
void			 ahc_linux_eisa_exit(void);
int			 aic7770_map_registers(struct ahc_softc *ahc,
					       u_int port);
int			 aic7770_map_int(struct ahc_softc *ahc, u_int irq);
#else
static inline int	ahc_linux_eisa_init(void) {
	return -ENODEV;
}
static inline void	ahc_linux_eisa_exit(void) {
}
#endif

/******************************* PCI Routines *********************************/
#ifdef CONFIG_PCI
void			 ahc_power_state_change(struct ahc_softc *ahc,
						ahc_power_state new_state);
int			 ahc_linux_pci_init(void);
void			 ahc_linux_pci_exit(void);
int			 ahc_pci_map_registers(struct ahc_softc *ahc);
int			 ahc_pci_map_int(struct ahc_softc *ahc);

static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci,
					     int reg, int width);

static __inline uint32_t
ahc_pci_read_config(ahc_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("ahc_pci_read_config: Read size too big");
		/* NOTREACHED */
		return (0);
	}
}

static __inline void ahc_pci_write_config(ahc_dev_softc_t pci,
					  int reg, uint32_t value,
					  int width);

static __inline void
ahc_pci_write_config(ahc_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("ahc_pci_write_config: Write size too big");
		/* NOTREACHED */
	}
}

static __inline int ahc_get_pci_function(ahc_dev_softc_t);
static __inline int
ahc_get_pci_function(ahc_dev_softc_t pci)
{
	return (PCI_FUNC(pci->devfn));
}

static __inline int ahc_get_pci_slot(ahc_dev_softc_t);
static __inline int
ahc_get_pci_slot(ahc_dev_softc_t pci)
{
	return (PCI_SLOT(pci->devfn));
}

static __inline int ahc_get_pci_bus(ahc_dev_softc_t);
static __inline int
ahc_get_pci_bus(ahc_dev_softc_t pci)
{
	return (pci->bus->number);
}
#else
static inline int ahc_linux_pci_init(void) {
	return 0;
}
static inline void ahc_linux_pci_exit(void) {
}
#endif

static __inline void ahc_flush_device_writes(struct ahc_softc *);
static __inline void
ahc_flush_device_writes(struct ahc_softc *ahc)
{
	/* XXX Is this sufficient for all architectures??? */
	ahc_inb(ahc, 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 ahc_pci_set_dma_mask pci_set_dma_mask
#else
/*
 * Always "return" 0 for success.
 */
#define ahc_pci_set_dma_mask(dev_softc, mask)  			\
	(((dev_softc)->dma_mask = mask) && 0)
#endif
/**************************** Proc FS Support *********************************/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
int	ahc_linux_proc_info(char *, char **, off_t, int, int, int);
#else
int	ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
			    off_t, int, int);
#endif

/*************************** Domain Validation ********************************/
#define AHC_DV_CMD(cmd) ((cmd)->scsi_done == ahc_linux_dv_complete)
#define AHC_DV_SIMQ_FROZEN(ahc)					\
	((((ahc)->platform_data->flags & AHC_DV_ACTIVE) != 0)	\
	 && (ahc)->platform_data->qfrozen == 1)

/*********************** Transaction Access Wrappers *************************/
static __inline void ahc_cmd_set_transaction_status(Scsi_Cmnd *, uint32_t);
static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
static __inline void ahc_cmd_set_scsi_status(Scsi_Cmnd *, uint32_t);
static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
static __inline uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd);
static __inline uint32_t ahc_get_transaction_status(struct scb *);
static __inline uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd);
static __inline uint32_t ahc_get_scsi_status(struct scb *);
static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
static __inline u_long ahc_get_transfer_length(struct scb *);
static __inline int ahc_get_transfer_dir(struct scb *);
static __inline void ahc_set_residual(struct scb *, u_long);
static __inline void ahc_set_sense_residual(struct scb *scb, u_long resid);
static __inline u_long ahc_get_residual(struct scb *);
static __inline u_long ahc_get_sense_residual(struct scb *);
static __inline int ahc_perform_autosense(struct scb *);
static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc *,
					       struct scb *);
static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *,
						     struct ahc_devinfo *);
static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
					   struct scb *scb);
static __inline void ahc_freeze_scb(struct scb *scb);

static __inline
void ahc_cmd_set_transaction_status(Scsi_Cmnd *cmd, uint32_t status)
{
	cmd->result &= ~(CAM_STATUS_MASK << 16);
	cmd->result |= status << 16;
}

static __inline
void ahc_set_transaction_status(struct scb *scb, uint32_t status)
{
	ahc_cmd_set_transaction_status(scb->io_ctx,status);
}

static __inline
void ahc_cmd_set_scsi_status(Scsi_Cmnd *cmd, uint32_t status)
{
	cmd->result &= ~0xFFFF;
	cmd->result |= status;
}

static __inline
void ahc_set_scsi_status(struct scb *scb, uint32_t status)
{
	ahc_cmd_set_scsi_status(scb->io_ctx, status);
}

static __inline
uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd)
{
	return ((cmd->result >> 16) & CAM_STATUS_MASK);
}

static __inline
uint32_t ahc_get_transaction_status(struct scb *scb)
{
	return (ahc_cmd_get_transaction_status(scb->io_ctx));
}

static __inline
uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd)
{
	return (cmd->result & 0xFFFF);
}

static __inline
uint32_t ahc_get_scsi_status(struct scb *scb)
{
	return (ahc_cmd_get_scsi_status(scb->io_ctx));
}

static __inline
void ahc_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 ahc_get_transfer_length(struct scb *scb)
{
	return (scb->platform_data->xfer_len);
}

static __inline
int ahc_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 ahc_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 ahc_set_sense_residual(struct scb *scb, u_long resid)
{
	scb->platform_data->sense_resid = resid;
}

static __inline
u_long ahc_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
u_long ahc_get_sense_residual(struct scb *scb)
{
	return (scb->platform_data->sense_resid);
}

static __inline
int ahc_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
ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
{
	return (sizeof(struct scsi_sense_data));
}

static __inline void
ahc_notify_xfer_settings_change(struct ahc_softc *ahc,
				struct ahc_devinfo *devinfo)
{
	/* Nothing to do here for linux */
}

static __inline void
ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
{
	ahc->flags &= ~AHC_RESOURCE_SHORTAGE;
}

int	ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
void	ahc_platform_free(struct ahc_softc *ahc);
void	ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb);

static __inline void
ahc_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	ahc_platform_set_tags(struct ahc_softc *ahc,
			      struct ahc_devinfo *devinfo, ahc_queue_alg);
int	ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
				char channel, int lun, u_int tag,
				role_t role, uint32_t status);
irqreturn_t
	ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs);
void	ahc_platform_flushwork(struct ahc_softc *ahc);
int	ahc_softc_comp(struct ahc_softc *, struct ahc_softc *);
void	ahc_done(struct ahc_softc*, struct scb*);
void	ahc_send_async(struct ahc_softc *, char channel,
		       u_int target, u_int lun, ac_code, void *);
void	ahc_print_path(struct ahc_softc *, struct scb *);
void	ahc_platform_dump_card_state(struct ahc_softc *ahc);

#ifdef CONFIG_PCI
#define AHC_PCI_CONFIG 1
#else
#define AHC_PCI_CONFIG 0
#endif
#define bootverbose aic7xxx_verbose
extern u_int aic7xxx_verbose;
#endif /* _AIC7XXX_LINUX_H_ */