#include "ocs.h"
#include "ocs_hal.h"
#include "sli4.h"
#include "sli4_iscsi.h"
#include "ocs_iscsi_spec.h"

Detailed Description

Implementation of iSCSI Skyhawk SLI-4 functions

Functions
static int32_t	sli_skh_iscsi_cqe_i_sol (sli4_t sli4, uint8_t cqe, sli4_qentry_fields_t *fields)
	Parse an iSCSI work queue CQ entry. More...

static int32_t	sli_skh_iscsi_cqe_t_sol (sli4_t sli4, uint8_t cqe, sli4_qentry_fields_t *fields)
	Parse an iSCSI work queue CQ entry. More...

static int32_t	sli_skh_iscsi_cqe_t_sol_data_digest (sli4_t sli4, uint8_t cqe, sli4_qentry_fields_t *fields)
	Parse an iSCSI work queue CQ entry. More...

static int32_t	sli_skh_iscsi_cqe_t_cnxinv (sli4_t sli4, uint8_t cqe, sli4_qentry_fields_t *fields)
	Parse an iSCSI work queue CQ entry. More...

static int32_t	sli_skh_iscsi_cqe_t_cmdinv (sli4_t sli4, uint8_t cqe, sli4_qentry_fields_t *fields)
	Parse an iSCSI work queue CQ entry. More...

static int32_t	sli_skh_iscsi_cqe_i_t_dpdu (sli4_t sli4, uint8_t cqe, sli4_qentry_fields_t *fields)
	Parse an iSCSI work queue CQ entry. More...

static int32_t	sli_skh_iscsi_cqe_i_t_dmsg (sli4_t sli4, uint8_t cqe, sli4_qentry_fields_t *fields)
	Parse an iSCSI work queue CQ entry. More...

static int32_t	sli_skh_iscsi_cqe_tx_dif_error (sli4_t sli4, uint8_t cqe, sli4_qentry_fields_t *fields)
	Parse an iSCSI work queue CQ entry. More...

static int32_t	sli_skh_wqe_dif (void buf, ocs_hal_dif_info_t dif_info, sli4_sge_t sgl0, sli4_sge_t sgl_dif)
	Write an DIF WQE work queue entry. More...

static int32_t	sli_skh_wqe_ini_write (sli4_t sli4, void buf, size_t size, uint16_t lun, uint32_t exp_xfer_len, uint32_t cmdsn, uint16_t icd_index, ocs_hal_dif_info_t dif_info, sli4_sge_t sgl, uint32_t n_sge)
	write an INITIATOR_WRITE_COMMAND WQE work queue entry More...

static int32_t	sli_skh_wqe_ini_tmf (sli4_t sli4, void buf, size_t size, uint16_t lun, uint32_t cmdsn, uint16_t icd_index, sli4_sge_t *sgl, uint32_t n_sge)
	Write an INITIATOR_TMF WQE work queue entry. More...

static int32_t	sli_skh_wqe_ini_nop (sli4_t sli4, void buf, size_t size, uint8_t dm, uint32_t cmdsn, ocs_dma_t bhs, ocs_dma_t payload1, ocs_dma_t *payload2, uint32_t exp_xfer_len, uint16_t icd_index)
	Write an INITIATOR_NOP_OUT_COMMAND WQE work queue entry. More...

static int32_t	sli_skh_wqe_ini_read (sli4_t sli4, void buf, size_t size, uint16_t lun, uint32_t exp_xfer_len, uint32_t cmdsn, uint16_t icd_index, ocs_hal_dif_info_t dif_info, sli4_sge_t sgl, uint32_t n_sge)
	write an INITIATOR_READ WQE work queue entry. More...

static int32_t	sli_skh_wqe_update_context (sli4_t sli4, void buf, size_t size, ocs_hal_target_login_options_t *lgn_options, uint32_t statsn)
	Write an CONTEXT_UPDATE_WQE work queue entry. More...

static int32_t	sli_skh_wqe_tgt_sts (sli4_t sli4, void buf, size_t size, ocs_dma_t bhs, uint16_t lun, uint32_t exp_xfer_len, uint32_t exp_data_sn, uint32_t itt, uint16_t icd_index, uint16_t ref_icd_index, ocs_hal_dif_info_t dif_info, uint32_t r2t_offset, sli4_sge_t *sgl, uint32_t n_sge)
	Write an TGT_STS_WQE work queue entry. More...

static int32_t	sli_skh_wqe_tgt_datain (sli4_t sli4, void buf, size_t size, ocs_dma_t bhs, uint16_t lun, uint8_t dm, uint8_t underrun, uint8_t overrun, uint32_t exp_xfer_len, uint16_t icd_index, uint16_t ref_icd_index, uint32_t data_sn, uint8_t piggy_back_status, ocs_hal_dif_info_t dif_info, sli4_sge_t *sgl, uint32_t n_sge)
	Write an TGT_DATAIN_WQE work queue entry. More...

static int32_t	sli_skh_wqe_tgt_sos (sli4_t sli4, void buf, size_t size, ocs_dma_t bhs, ocs_dma_t payload1, ocs_dma_t *payload2, uint16_t lun, uint8_t dm, uint32_t exp_xfer_len, uint16_t icd_index)
	Write an TGT_SOS_WQE work queue entry. More...

static int32_t	sli_skh_wqe_unassisted (sli4_t sli4, void buf, size_t size, uint8_t set_dm, uint8_t incr_statsn, uint8_t is_login, ocs_dma_t bhs, ocs_dma_t payload1, ocs_dma_t *payload2, uint32_t exp_xfer_len, uint16_t icd_index)
	Write an DM_CMD_WQE work queue entry. More...

static int32_t	sli_skh_queue_iscsi_wq_write (sli4_t sli4, sli4_queue_t q, uint8_t entry, void io)
	Write an QWE entry to the queue object. More...

static int32_t	sli_skh_queue_iscsi_wqe_invalidate (sli4_t sli4, sli4_queue_t q, void *io, uint8_t is_for_tm)
	Writes a 1 to the invalidate bit of the WQE. More...

static int32_t	sli_skh_cmd_common_get_sli4_parameters (sli4_t sli4, void buf, size_t size)
	Write a COMMON_GET_SLI4_PARAMETERS command to the provided buffer. More...

int32_t	sli_skh_get_sli4_parameters (sli4_t *sli4)
	Issue the GET_SLI4_PARAMETERS IOCTL and populate the results. More...

Variables
const char *	SLI_QNAME []

cqe_handler_t *	ini_skh_cqe_handlers [ISCSI_CQE_CODE_MAX+1]

cqe_handler_t *	tgt_skh_cqe_handlers [ISCSI_CQE_CODE_MAX+1]

sli_wqe_handlers_t	sli_skh_iscsi_wqe_handlers

Function Details

static int32_t sli_skh_cmd_common_get_sli4_parameters	(	sli4_t *	sli4,
		void *	buf,
		size_t	size
	)

static

Write a COMMON_GET_SLI4_PARAMETERS command to the provided buffer.

Parameters

sli4	SLI context pointer.
buf	Virtual pointer to the destination buffer.
size	Buffer size in bytes.

Returns: Number of bytes written.

Definition at line 1243 of file sli4_skh_iscsi.c.

int32_t sli_skh_get_sli4_parameters ( sli4_t * sli4 )

Issue the GET_SLI4_PARAMETERS IOCTL and populate the results.

Parameters

sli4	SLI context.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 1273 of file sli4_skh_iscsi.c.

static int32_t sli_skh_iscsi_cqe_i_sol	(	sli4_t *	sli4,
		uint8_t *	cqe,
		sli4_qentry_fields_t *	fields
	)

static

Parse an iSCSI work queue CQ entry.

Parameters

sli4	SLI context.
cqe	Pointer to the CQ entry.
fields	Returns the fields embedded in the CQ entry.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 822 of file sli4_skh_iscsi.c.

static int32_t sli_skh_iscsi_cqe_i_t_dmsg	(	sli4_t *	sli4,
		uint8_t *	cqe,
		sli4_qentry_fields_t *	fields
	)

static

Parse an iSCSI work queue CQ entry.

Parameters

sli4	SLI context.
cqe	Pointer to the CQ entry.
fields	Returns the fields embedded in the CQ entry.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 1194 of file sli4_skh_iscsi.c.

static int32_t sli_skh_iscsi_cqe_i_t_dpdu	(	sli4_t *	sli4,
		uint8_t *	cqe,
		sli4_qentry_fields_t *	fields
	)

static

Parse an iSCSI work queue CQ entry.

Parameters

sli4	SLI context.
cqe	Pointer to the CQ entry.
fields	Returns the fields embedded in the CQ entry.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 1166 of file sli4_skh_iscsi.c.

static int32_t sli_skh_iscsi_cqe_t_cmdinv	(	sli4_t *	sli4,
		uint8_t *	cqe,
		sli4_qentry_fields_t *	fields
	)

static

Parse an iSCSI work queue CQ entry.

Parameters

sli4	SLI context.
cqe	Pointer to the CQ entry.
fields	Returns the fields embedded in the CQ entry.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 1137 of file sli4_skh_iscsi.c.

static int32_t sli_skh_iscsi_cqe_t_cnxinv	(	sli4_t *	sli4,
		uint8_t *	cqe,
		sli4_qentry_fields_t *	fields
	)

static

Parse an iSCSI work queue CQ entry.

Parameters

sli4	SLI context.
cqe	Pointer to the CQ entry.
fields	Returns the fields embedded in the CQ entry.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 1099 of file sli4_skh_iscsi.c.

static int32_t sli_skh_iscsi_cqe_t_sol	(	sli4_t *	sli4,
		uint8_t *	cqe,
		sli4_qentry_fields_t *	fields
	)

static

Parse an iSCSI work queue CQ entry.

Parameters

sli4	SLI context.
cqe	Pointer to the CQ entry.
fields	Returns the fields embedded in the CQ entry.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 1036 of file sli4_skh_iscsi.c.

static int32_t sli_skh_iscsi_cqe_t_sol_data_digest	(	sli4_t *	sli4,
		uint8_t *	cqe,
		sli4_qentry_fields_t *	fields
	)

static

Parse an iSCSI work queue CQ entry.

Parameters

sli4	SLI context.
cqe	Pointer to the CQ entry.
fields	Returns the fields embedded in the CQ entry.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 1066 of file sli4_skh_iscsi.c.

static int32_t sli_skh_iscsi_cqe_tx_dif_error	(	sli4_t *	sli4,
		uint8_t *	cqe,
		sli4_qentry_fields_t *	fields
	)

static

Parse an iSCSI work queue CQ entry.

Parameters

sli4	SLI context.
cqe	Pointer to the CQ entry.
fields	Returns the fields embedded in the CQ entry.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 1218 of file sli4_skh_iscsi.c.

static int32_t sli_skh_queue_iscsi_wq_write	(	sli4_t *	sli4,
		sli4_queue_t *	q,
		uint8_t *	entry,
		void *	io
	)

static

Write an QWE entry to the queue object.

Parameters

sli4	SLI context.
q	Pointer to queue object.
entry	Pointer to entry contents.
io	Pointer to the IO object.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 875 of file sli4_skh_iscsi.c.

static int32_t sli_skh_queue_iscsi_wqe_invalidate	(	sli4_t *	sli4,
		sli4_queue_t *	q,
		void *	io,
		uint8_t	is_for_tm
	)

static

Writes a 1 to the invalidate bit of the WQE.

Parameters

sli4	SLI context.
q	Pointer to the queue object.
io	Pointer to the IO object.
is_for_tm	TRUE if the IO is being aborted for task management, otherwise FALSE.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 994 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_dif	(	void *	buf,
		ocs_hal_dif_info_t *	dif_info,
		sli4_sge_t *	sgl0,
		sli4_sge_t *	sgl_dif
	)

static

Write an DIF WQE work queue entry.

Parameters

buf	Destination buffer for the WQE.
dif_info	Pointer to the DIF fields (may be NULL).
sgl0	Pointer to the SGL to put in SGE0 (data).
sgl_dif	Pointer to the SGL to put in SGE1 (DIF separate).

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 160 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_ini_nop	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		uint8_t	dm,
		uint32_t	cmdsn,
		ocs_dma_t *	bhs,
		ocs_dma_t *	payload1,
		ocs_dma_t *	payload2,
		uint32_t	exp_xfer_len,
		uint16_t	icd_index
	)

static

Write an INITIATOR_NOP_OUT_COMMAND WQE work queue entry.

Parameters

sli4	SLI context.
buf	Destination buffer for the WQE.
size	Buffer size in bytes.
dm	Determines whether a dmsg CQE is generated.
cmdsn	iSCSI cmdsn for the command.
bhs	Pointer to the basic header segment.
payload1	Optional pointer to payload memory.
payload2	Optional pointer to payload memory.
exp_xfer_len	Total # of payload bytes.
icd_index	ICD index fr this request.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 359 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_ini_read	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		uint16_t	lun,
		uint32_t	exp_xfer_len,
		uint32_t	cmdsn,
		uint16_t	icd_index,
		ocs_hal_dif_info_t *	dif_info,
		sli4_sge_t *	sgl,
		uint32_t	n_sge
	)

static

write an INITIATOR_READ WQE work queue entry.

Description

sgl[0] points the the BHS.
sgl[1] must be empty.
sgl[2] starts the data SGEs.

Parameters

sli4	SLI context.
buf	Destination buffer for the WQE.
size	Buffer size in bytes.
lun	LUN value for the command.
exp_xfer_len	Total # of payload bytes.
cmdsn	iSCSI cmdsn for the command.
icd_index	ICD index fr this request.
dif_info	Pointer to the DIF fields (may be NULL).
sgl	Pointer to the SGEs for this IO.
n_sge	Number of SGEs present.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 424 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_ini_tmf	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		uint16_t	lun,
		uint32_t	cmdsn,
		uint16_t	icd_index,
		sli4_sge_t *	sgl,
		uint32_t	n_sge
	)

static

Write an INITIATOR_TMF WQE work queue entry.

Description

sgl[0] points the the BHS.

Parameters

sli4	SLI context.
buf	Destination buffer for the WQE.
size	Buffer size in bytes.
lun	The LUN value for the command.
cmdsn	iSCSI cmdsn for the command.
icd_index	ICD index fr this request.
sgl	Pointer to the SGEs for this IO.
n_sge	Number of SGEs present.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 320 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_ini_write	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		uint16_t	lun,
		uint32_t	exp_xfer_len,
		uint32_t	cmdsn,
		uint16_t	icd_index,
		ocs_hal_dif_info_t *	dif_info,
		sli4_sge_t *	sgl,
		uint32_t	n_sge
	)

static

write an INITIATOR_WRITE_COMMAND WQE work queue entry

Description

sgl[0] points the BHS.
sgl[1] must be empty.
sgl[2] starts the data SGEs.

Parameters

sli4	SLI context.
buf	Destination buffer for the WQE.
size	Buffer size in bytes.
lun	LUN value for the command.
exp_xfer_len	Total # of payload bytes.
cmdsn	iSCSI cmdsn for the command.
icd_index	ICD index fr this request.
dif_info	Pointer to the DIF fields (may be NULL).
sgl	Pointer to the SGEs for this IO.
n_sge	Number of SGEs present.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 240 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_tgt_datain	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		ocs_dma_t *	bhs,
		uint16_t	lun,
		uint8_t	dm,
		uint8_t	underrun,
		uint8_t	overrun,
		uint32_t	exp_xfer_len,
		uint16_t	icd_index,
		uint16_t	ref_icd_index,
		uint32_t	data_sn,
		uint8_t	piggy_back_status,
		ocs_hal_dif_info_t *	dif_info,
		sli4_sge_t *	sgl,
		uint32_t	n_sge
	)

static

Write an TGT_DATAIN_WQE work queue entry.

Description: The SGE entries in this WQE are used if all the entries fit in the WQE for a performance increase.

Parameters

sli4	SLI context.
buf	Destination buffer for the WQE.
size	Buffer size in bytes.
bhs	Pointer to the basic header segment.
lun	LUN value for the command.
dm	Determines whether a dmsg CQE is generated.
underrun	Sets the underrun bit in the auto response.
overrun	Sets the overrun bit in the auto response.
exp_xfer_len	Total # of payload bytes.
icd_index	ICD Index for this request.
ref_icd_index	Reference ICD Index.
data_sn	Starting data sequence number.
piggy_back_status	If true, a good status is sent to the initiator.
dif_info	Pointer to the DIF fields (may be NULL).
sgl	Pointer to the SGEs for this IO.
n_sge	Number of SGEs present.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 630 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_tgt_sos	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		ocs_dma_t *	bhs,
		ocs_dma_t *	payload1,
		ocs_dma_t *	payload2,
		uint16_t	lun,
		uint8_t	dm,
		uint32_t	exp_xfer_len,
		uint16_t	icd_index
	)

static

Write an TGT_SOS_WQE work queue entry.

Parameters

sli4	SLI context.
buf	Destination buffer for the WQE.
size	Buffer size in bytes.
bhs	Pointer to the basic header segment.
payload1	Optional pointer to payload memory.
payload2	Optional pointer to payload memory.
lun	LUN value for the command.
dm	Determines whether a dmsg CQE is generated.
exp_xfer_len	Total # of payload bytes.
icd_index	ICD index for this request.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 714 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_tgt_sts	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		ocs_dma_t *	bhs,
		uint16_t	lun,
		uint32_t	exp_xfer_len,
		uint32_t	exp_data_sn,
		uint32_t	itt,
		uint16_t	icd_index,
		uint16_t	ref_icd_index,
		ocs_hal_dif_info_t *	dif_info,
		uint32_t	r2t_offset,
		sli4_sge_t *	sgl,
		uint32_t	n_sge
	)

static

Write an TGT_STS_WQE work queue entry.

Parameters

sli4	SLI context.
buf	Destination buffer for the WQE.
size	Buffer size in bytes.
bhs	Pointer to the basic header segment.
lun	LUN value for the command.
exp_xfer_len	Total # of payload bytes.
exp_data_sn	Expected data sequence number.
itt	Initiator transfer tag.
icd_index	ICD index fr this request.
ref_icd_index	Reference ICD Index.
dif_info	Pointer to the DIF fields (may be NULL).
r2t_offset	R2T buffer Offset.
sgl	Pointer to the SGEs for this IO.
n_sge	Number of SGEs present.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 546 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_unassisted	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		uint8_t	set_dm,
		uint8_t	incr_statsn,
		uint8_t	is_login,
		ocs_dma_t *	bhs,
		ocs_dma_t *	payload1,
		ocs_dma_t *	payload2,
		uint32_t	exp_xfer_len,
		uint16_t	icd_index
	)

static

Write an DM_CMD_WQE work queue entry.

Parameters

sli4	SLI context.
buf	Destination buffer for the WQE.
size	Buffer size in bytes.
set_dm	If TRUE, then a I_T_DMSG_CQE is generated on TCP ACK.
incr_statsn	If TRUE, the statsn is incremented by the FW.
is_login	If TRUE, the statsn is not updated by FW.
bhs	Pointer to the basic header segment.
payload1	Optional pointer to payload memory.
payload2	Optional pointer to payload memory.
exp_xfer_len	Total # of payload bytes.
icd_index	ICD index fr this request.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 772 of file sli4_skh_iscsi.c.

static int32_t sli_skh_wqe_update_context	(	sli4_t *	sli4,
		void *	buf,
		size_t	size,
		ocs_hal_target_login_options_t *	lgn_options,
		uint32_t	statsn
	)

static

Write an CONTEXT_UPDATE_WQE work queue entry.

Parameters

sli4	SLI context.
buf	destination buffer for the WQE.
size	buffer size in bytes.
lgn_options	the target login options for the connection.
statsn	the status SN for the connection.

Returns: Returns 0 on success, or a non-zero value otherwise.

Definition at line 497 of file sli4_skh_iscsi.c.

Variable Details

cqe_handler_t* ini_skh_cqe_handlers[ISCSI_CQE_CODE_MAX+1]

Definition at line 70 of file sli4_skh_iscsi.c.

const char* SLI_QNAME[]

Definition at line 75 of file sli4.c.

sli_wqe_handlers_t sli_skh_iscsi_wqe_handlers

Initial value:

= {
    .wqe_update_context     = sli_skh_wqe_update_context,
    .wqe_ini_read           = sli_skh_wqe_ini_read,
    .wqe_ini_write          = sli_skh_wqe_ini_write,
    .wqe_ini_nop            = sli_skh_wqe_ini_nop,
    .wqe_ini_tmf            = sli_skh_wqe_ini_tmf,
    .wqe_tgt_datain         = sli_skh_wqe_tgt_datain,
    .wqe_tgt_sts            = sli_skh_wqe_tgt_sts,
    .wqe_tgt_sos            = sli_skh_wqe_tgt_sos,
    .wqe_unassisted         = sli_skh_wqe_unassisted,
    .queue_iscsi_wq_write       = sli_skh_queue_iscsi_wq_write,
    .queue_iscsi_wqe_invalidate = sli_skh_queue_iscsi_wqe_invalidate
}

Definition at line 1323 of file sli4_skh_iscsi.c.

cqe_handler_t* tgt_skh_cqe_handlers[ISCSI_CQE_CODE_MAX+1]

Definition at line 109 of file sli4_skh_iscsi.c.

Detailed Description

Functions

Variables

Function Details

Variable Details