aic79xx_osm.h

linux-2.6.15.6

ahd_inw_atomic(struct ahd_softc * ahd, long port)
{
	uint8_t x;

	if (ahd->tags[0] == BUS_SPACE_MEMIO) {
		x = readw(ahd->bshs[0].maddr + port);
	} else {
		x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));
	}
	mb();
	return (x);
}

static __inline void
ahd_outb(struct ahd_softc * ahd, long port, uint8_t val)
{
	if (ahd->tags[0] == BUS_SPACE_MEMIO) {
		writeb(val, ahd->bshs[0].maddr + port);
	} else {
		outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));
	}
	mb();
}

static __inline void
ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val)
{
	if (ahd->tags[0] == BUS_SPACE_MEMIO) {
		writew(val, ahd->bshs[0].maddr + port);
	} else {
		outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));
	}
	mb();
}

static __inline void
ahd_outsb(struct ahd_softc * ahd, long port, uint8_t *array, int count)
{
	int i;

	/*
	 * There is probably a more efficient way to do this on Linux
	 * but we don't use this for anything speed critical and this
	 * should work.
	 */
	for (i = 0; i < count; i++)
		ahd_outb(ahd, port, *array++);
}

static __inline void
ahd_insb(struct ahd_softc * ahd, long port, uint8_t *array, int count)
{
	int i;

	/*
	 * There is probably a more efficient way to do this on Linux
	 * but we don't use this for anything speed critical and this
	 * should work.
	 */
	for (i = 0; i < count; i++)
		*array++ = ahd_inb(ahd, port);
}

/**************************** Initialization **********************************/
int		ahd_linux_register_host(struct ahd_softc *,
					struct scsi_host_template *);

uint64_t	ahd_linux_get_memsize(void);

/*************************** Pretty Printing **********************************/
struct info_str {
	char *buffer;
	int length;
	off_t offset;
	int pos;
};

void	ahd_format_transinfo(struct info_str *info,
			     struct ahd_transinfo *tinfo);

/******************************** 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		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 */

extern struct pci_driver aic79xx_pci_driver;

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);

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);
}

/**************************** Proc FS Support *********************************/
int	ahd_linux_proc_info(struct Scsi_Host *, char *, char **,
			    off_t, int, int);

/*********************** Transaction Access Wrappers **************************/
static __inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
static __inline void ahd_set_transaction_status(struct scb *, uint32_t);
static __inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
static __inline void ahd_set_scsi_status(struct scb *, uint32_t);
static __inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd);
static __inline uint32_t ahd_get_transaction_status(struct scb *);
static __inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd);
static __inline uint32_t ahd_get_scsi_status(struct scb *);
static __inline void ahd_set_transaction_tag(struct scb *, int, u_int);
static __inline u_long ahd_get_transfer_length(struct scb *);
static __inline int ahd_get_transfer_dir(struct scb *);
static __inline void ahd_set_residual(struct scb *, u_long);
static __inline void ahd_set_sense_residual(struct scb *scb, u_long resid);
static __inline u_long ahd_get_residual(struct scb *);
static __inline u_long ahd_get_sense_residual(struct scb *);
static __inline int ahd_perform_autosense(struct scb *);
static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *,
					       struct scb *);
static __inline void ahd_notify_xfer_settings_change(struct ahd_softc *,
						     struct ahd_devinfo *);
static __inline void ahd_platform_scb_free(struct ahd_softc *ahd,
					   struct scb *scb);
static __inline void ahd_freeze_scb(struct scb *scb);

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 &= ~0xFFFF;
	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 & 0xFFFF);
}

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)
{
	scb->io_ctx->resid = 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 (scb->io_ctx->resid);
}

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);
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)
{
	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 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, 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 *);

#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_ */