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cq_exch_desc.h
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/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _CQ_EXCH_DESC_H_
#define _CQ_EXCH_DESC_H_
#include "cq_desc.h"
/* Exchange completion queue descriptor: 16B */
struct cq_exch_wq_desc {
u16 completed_index;
u16 q_number;
u16 exchange_id;
u8 tmpl;
u8 reserved0;
u32 reserved1;
u8 exch_status;
u8 reserved2[2];
u8 type_color;
};
#define CQ_EXCH_WQ_STATUS_BITS 2
#define CQ_EXCH_WQ_STATUS_MASK ((1 << CQ_EXCH_WQ_STATUS_BITS) - 1)
enum cq_exch_status_types {
CQ_EXCH_WQ_STATUS_TYPE_COMPLETE = 0,
CQ_EXCH_WQ_STATUS_TYPE_ABORT = 1,
CQ_EXCH_WQ_STATUS_TYPE_SGL_EOF = 2,
CQ_EXCH_WQ_STATUS_TYPE_TMPL_ERR = 3,
};
static inline void cq_exch_wq_desc_dec(struct cq_exch_wq_desc *desc_ptr,
u8 *type,
u8 *color,
u16 *q_number,
u16 *completed_index,
u8 *exch_status)
{
cq_desc_dec((struct cq_desc *)desc_ptr, type,
color, q_number, completed_index);
*exch_status = desc_ptr->exch_status & CQ_EXCH_WQ_STATUS_MASK;
}
struct cq_fcp_rq_desc {
u16 completed_index_eop_sop_prt;
u16 q_number;
u16 exchange_id;
u16 tmpl;
u16 bytes_written;
u16 vlan;
u8 sof;
u8 eof;
u8 fcs_fer_fck;
u8 type_color;
};
#define CQ_FCP_RQ_DESC_FLAGS_SOP (1 << 15)
#define CQ_FCP_RQ_DESC_FLAGS_EOP (1 << 14)
#define CQ_FCP_RQ_DESC_FLAGS_PRT (1 << 12)
#define CQ_FCP_RQ_DESC_TMPL_MASK 0x1f
#define CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK 0x3fff
#define CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT 14
#define CQ_FCP_RQ_DESC_PACKET_ERR_MASK (1 << CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT)
#define CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT 15
#define CQ_FCP_RQ_DESC_VS_STRIPPED_MASK (1 << CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT)
#define CQ_FCP_RQ_DESC_FC_CRC_OK_MASK 0x1
#define CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT 1
#define CQ_FCP_RQ_DESC_FCOE_ERR_MASK (1 << CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT)
#define CQ_FCP_RQ_DESC_FCS_OK_SHIFT 7
#define CQ_FCP_RQ_DESC_FCS_OK_MASK (1 << CQ_FCP_RQ_DESC_FCS_OK_SHIFT)
static inline void cq_fcp_rq_desc_dec(struct cq_fcp_rq_desc *desc_ptr,
u8 *type,
u8 *color,
u16 *q_number,
u16 *completed_index,
u8 *eop,
u8 *sop,
u8 *fck,
u16 *exchange_id,
u16 *tmpl,
u32 *bytes_written,
u8 *sof,
u8 *eof,
u8 *ingress_port,
u8 *packet_err,
u8 *fcoe_err,
u8 *fcs_ok,
u8 *vlan_stripped,
u16 *vlan)
{
cq_desc_dec((struct cq_desc *)desc_ptr, type,
color, q_number, completed_index);
*eop = (desc_ptr->completed_index_eop_sop_prt &
CQ_FCP_RQ_DESC_FLAGS_EOP) ? 1 : 0;
*sop = (desc_ptr->completed_index_eop_sop_prt &
CQ_FCP_RQ_DESC_FLAGS_SOP) ? 1 : 0;
*ingress_port =
(desc_ptr->completed_index_eop_sop_prt &
CQ_FCP_RQ_DESC_FLAGS_PRT) ? 1 : 0;
*exchange_id = desc_ptr->exchange_id;
*tmpl = desc_ptr->tmpl & CQ_FCP_RQ_DESC_TMPL_MASK;
*bytes_written =
desc_ptr->bytes_written & CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK;
*packet_err =
(desc_ptr->bytes_written & CQ_FCP_RQ_DESC_PACKET_ERR_MASK) >>
CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT;
*vlan_stripped =
(desc_ptr->bytes_written & CQ_FCP_RQ_DESC_VS_STRIPPED_MASK) >>
CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT;
*vlan = desc_ptr->vlan;
*sof = desc_ptr->sof;
*fck = desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FC_CRC_OK_MASK;
*fcoe_err = (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCOE_ERR_MASK) >>
CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT;
*eof = desc_ptr->eof;
*fcs_ok =
(desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCS_OK_MASK) >>
CQ_FCP_RQ_DESC_FCS_OK_SHIFT;
}
struct cq_sgl_desc {
u16 exchange_id;
u16 q_number;
u32 active_burst_offset;
u32 tot_data_bytes;
u16 tmpl;
u8 sgl_err;
u8 type_color;
};
enum cq_sgl_err_types {
CQ_SGL_ERR_NO_ERROR = 0,
CQ_SGL_ERR_OVERFLOW, /* data ran beyond end of SGL */
CQ_SGL_ERR_SGL_LCL_ADDR_ERR, /* sgl access to local vnic addr illegal*/
CQ_SGL_ERR_ADDR_RSP_ERR, /* sgl address error */
CQ_SGL_ERR_DATA_RSP_ERR, /* sgl data rsp error */
CQ_SGL_ERR_CNT_ZERO_ERR, /* SGL count is 0 */
CQ_SGL_ERR_CNT_MAX_ERR, /* SGL count is larger than supported */
CQ_SGL_ERR_ORDER_ERR, /* frames recv on both ports, order err */
CQ_SGL_ERR_DATA_LCL_ADDR_ERR,/* sgl data buf to local vnic addr ill */
CQ_SGL_ERR_HOST_CQ_ERR, /* host cq entry to local vnic addr ill */
};
#define CQ_SGL_SGL_ERR_MASK 0x1f
#define CQ_SGL_TMPL_MASK 0x1f
static inline void cq_sgl_desc_dec(struct cq_sgl_desc *desc_ptr,
u8 *type,
u8 *color,
u16 *q_number,
u16 *exchange_id,
u32 *active_burst_offset,
u32 *tot_data_bytes,
u16 *tmpl,
u8 *sgl_err)
{
/* Cheat a little by assuming exchange_id is the same as completed
index */
cq_desc_dec((struct cq_desc *)desc_ptr, type, color, q_number,
exchange_id);
*active_burst_offset = desc_ptr->active_burst_offset;
*tot_data_bytes = desc_ptr->tot_data_bytes;
*tmpl = desc_ptr->tmpl & CQ_SGL_TMPL_MASK;
*sgl_err = desc_ptr->sgl_err & CQ_SGL_SGL_ERR_MASK;
}
#endif /* _CQ_EXCH_DESC_H_ */