[net-next-2.6.git] / drivers / scsi / qla2xxx / qla_inline.h

/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2008 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */

/*
 * qla2x00_debounce_register
 *      Debounce register.
 *
 * Input:
 *      port = register address.
 *
 * Returns:
 *      register value.
 */
static __inline__ uint16_t
qla2x00_debounce_register(volatile uint16_t __iomem *addr)
{
	volatile uint16_t first;
	volatile uint16_t second;

	do {
		first = RD_REG_WORD(addr);
		barrier();
		cpu_relax();
		second = RD_REG_WORD(addr);
	} while (first != second);

	return (first);
}

static inline void
qla2x00_poll(struct rsp_que *rsp)
{
	unsigned long flags;
	struct qla_hw_data *ha = rsp->hw;
	local_irq_save(flags);
	ha->isp_ops->intr_handler(0, rsp);
	local_irq_restore(flags);
}

/**
 * qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
 * @ha: HA context
 * @ha_locked: is function called with the hardware lock
 *
 * Returns non-zero if a failure occurred, else zero.
 */
static inline int
qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
{
	/* Send marker if required */
	if (vha->marker_needed != 0) {
		if (ha_locked) {
			if (__qla2x00_marker(vha, 0, 0, MK_SYNC_ALL) !=
			    QLA_SUCCESS)
				return (QLA_FUNCTION_FAILED);
		} else {
			if (qla2x00_marker(vha, 0, 0, MK_SYNC_ALL) !=
			    QLA_SUCCESS)
				return (QLA_FUNCTION_FAILED);
		}
		vha->marker_needed = 0;
	}
	return (QLA_SUCCESS);
}

static inline uint8_t *
host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
{
       uint32_t *ifcp = (uint32_t *) fcp;
       uint32_t *ofcp = (uint32_t *) fcp;
       uint32_t iter = bsize >> 2;

       for (; iter ; iter--)
               *ofcp++ = swab32(*ifcp++);

       return fcp;
}

static inline int
qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id)
{
	struct qla_hw_data *ha = vha->hw;
	if (IS_FWI2_CAPABLE(ha))
		return (loop_id > NPH_LAST_HANDLE);

	return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
	    loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
};
Commit	Line	Data
1da177e4	1	/*
fa90c54f	2	* QLogic Fibre Channel HBA Driver
01e58d8e	3	* Copyright (c) 2003-2008 QLogic Corporation
1da177e4	4	*
fa90c54f	5	* See LICENSE.qla2xxx for copyright and licensing details.
1da177e4 LT	6	*/
1da177e4 LT	7
1da177e4 LT	8	/*
	9	* qla2x00_debounce_register
	10	* Debounce register.
	11	*
	12	* Input:
	13	* port = register address.
	14	*
	15	* Returns:
	16	* register value.
	17	*/
	18	static __inline__ uint16_t
fa2a1ce5	19	qla2x00_debounce_register(volatile uint16_t __iomem *addr)
1da177e4 LT	20	{
	21	volatile uint16_t first;
	22	volatile uint16_t second;
	23
	24	do {
	25	first = RD_REG_WORD(addr);
	26	barrier();
	27	cpu_relax();
	28	second = RD_REG_WORD(addr);
	29	} while (first != second);
	30
	31	return (first);
	32	}
	33
fa2a1ce5	34	static inline void
e315cd28	35	qla2x00_poll(struct rsp_que *rsp)
1da177e4	36	{
d2ba5675	37	unsigned long flags;
e315cd28	38	struct qla_hw_data *ha = rsp->hw;
d2ba5675	39	local_irq_save(flags);
e315cd28	40	ha->isp_ops->intr_handler(0, rsp);
d2ba5675	41	local_irq_restore(flags);
1da177e4 LT	42	}
1da177e4 LT	43
1da177e4 LT	44	/**
	45	* qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
	46	* @ha: HA context
	47	* @ha_locked: is function called with the hardware lock
	48	*
cc3ef7bc	49	* Returns non-zero if a failure occurred, else zero.
1da177e4 LT	50	*/
1da177e4 LT	51	static inline int
e315cd28	52	qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
1da177e4 LT	53	{
1da177e4 LT	54	/* Send marker if required */
e315cd28	55	if (vha->marker_needed != 0) {
1da177e4	56	if (ha_locked) {
e315cd28	57	if (__qla2x00_marker(vha, 0, 0, MK_SYNC_ALL) !=
1da177e4 LT	58	QLA_SUCCESS)
	59	return (QLA_FUNCTION_FAILED);
	60	} else {
e315cd28	61	if (qla2x00_marker(vha, 0, 0, MK_SYNC_ALL) !=
1da177e4 LT	62	QLA_SUCCESS)
	63	return (QLA_FUNCTION_FAILED);
	64	}
e315cd28	65	vha->marker_needed = 0;
1da177e4 LT	66	}
	67	return (QLA_SUCCESS);
	68	}
	69
2b6c0cee AV	70	static inline uint8_t *
	71	host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
	72	{
	73	uint32_t ifcp = (uint32_t ) fcp;
	74	uint32_t ofcp = (uint32_t ) fcp;
	75	uint32_t iter = bsize >> 2;
	76
	77	for (; iter ; iter--)
	78	ofcp++ = swab32(ifcp++);
	79
	80	return fcp;
	81	}
3d71644c	82
3d71644c	83	static inline int
e315cd28	84	qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id)
3d71644c	85	{
e315cd28	86	struct qla_hw_data *ha = vha->hw;
e428924c	87	if (IS_FWI2_CAPABLE(ha))
3d71644c AV	88	return (loop_id > NPH_LAST_HANDLE);
3d71644c AV	89
e315cd28	90	return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) \|\|
3d71644c AV	91	loop_id == MANAGEMENT_SERVER \|\| loop_id == BROADCAST);
3d71644c AV	92	};