5df6d737dd
fnic is a driver for the Cisco PCI-Express FCoE HBA Signed-off-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
183 lines
5.7 KiB
C
183 lines
5.7 KiB
C
/*
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* Copyright 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _CQ_EXCH_DESC_H_
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#define _CQ_EXCH_DESC_H_
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#include "cq_desc.h"
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/* Exchange completion queue descriptor: 16B */
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struct cq_exch_wq_desc {
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u16 completed_index;
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u16 q_number;
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u16 exchange_id;
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u8 tmpl;
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u8 reserved0;
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u32 reserved1;
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u8 exch_status;
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u8 reserved2[2];
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u8 type_color;
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};
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#define CQ_EXCH_WQ_STATUS_BITS 2
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#define CQ_EXCH_WQ_STATUS_MASK ((1 << CQ_EXCH_WQ_STATUS_BITS) - 1)
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enum cq_exch_status_types {
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CQ_EXCH_WQ_STATUS_TYPE_COMPLETE = 0,
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CQ_EXCH_WQ_STATUS_TYPE_ABORT = 1,
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CQ_EXCH_WQ_STATUS_TYPE_SGL_EOF = 2,
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CQ_EXCH_WQ_STATUS_TYPE_TMPL_ERR = 3,
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};
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static inline void cq_exch_wq_desc_dec(struct cq_exch_wq_desc *desc_ptr,
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u8 *type,
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u8 *color,
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u16 *q_number,
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u16 *completed_index,
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u8 *exch_status)
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{
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cq_desc_dec((struct cq_desc *)desc_ptr, type,
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color, q_number, completed_index);
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*exch_status = desc_ptr->exch_status & CQ_EXCH_WQ_STATUS_MASK;
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}
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struct cq_fcp_rq_desc {
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u16 completed_index_eop_sop_prt;
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u16 q_number;
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u16 exchange_id;
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u16 tmpl;
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u16 bytes_written;
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u16 vlan;
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u8 sof;
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u8 eof;
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u8 fcs_fer_fck;
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u8 type_color;
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};
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#define CQ_FCP_RQ_DESC_FLAGS_SOP (1 << 15)
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#define CQ_FCP_RQ_DESC_FLAGS_EOP (1 << 14)
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#define CQ_FCP_RQ_DESC_FLAGS_PRT (1 << 12)
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#define CQ_FCP_RQ_DESC_TMPL_MASK 0x1f
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#define CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK 0x3fff
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#define CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT 14
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#define CQ_FCP_RQ_DESC_PACKET_ERR_MASK (1 << CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT)
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#define CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT 15
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#define CQ_FCP_RQ_DESC_VS_STRIPPED_MASK (1 << CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT)
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#define CQ_FCP_RQ_DESC_FC_CRC_OK_MASK 0x1
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#define CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT 1
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#define CQ_FCP_RQ_DESC_FCOE_ERR_MASK (1 << CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT)
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#define CQ_FCP_RQ_DESC_FCS_OK_SHIFT 7
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#define CQ_FCP_RQ_DESC_FCS_OK_MASK (1 << CQ_FCP_RQ_DESC_FCS_OK_SHIFT)
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static inline void cq_fcp_rq_desc_dec(struct cq_fcp_rq_desc *desc_ptr,
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u8 *type,
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u8 *color,
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u16 *q_number,
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u16 *completed_index,
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u8 *eop,
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u8 *sop,
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u8 *fck,
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u16 *exchange_id,
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u16 *tmpl,
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u32 *bytes_written,
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u8 *sof,
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u8 *eof,
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u8 *ingress_port,
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u8 *packet_err,
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u8 *fcoe_err,
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u8 *fcs_ok,
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u8 *vlan_stripped,
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u16 *vlan)
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{
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cq_desc_dec((struct cq_desc *)desc_ptr, type,
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color, q_number, completed_index);
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*eop = (desc_ptr->completed_index_eop_sop_prt &
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CQ_FCP_RQ_DESC_FLAGS_EOP) ? 1 : 0;
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*sop = (desc_ptr->completed_index_eop_sop_prt &
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CQ_FCP_RQ_DESC_FLAGS_SOP) ? 1 : 0;
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*ingress_port =
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(desc_ptr->completed_index_eop_sop_prt &
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CQ_FCP_RQ_DESC_FLAGS_PRT) ? 1 : 0;
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*exchange_id = desc_ptr->exchange_id;
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*tmpl = desc_ptr->tmpl & CQ_FCP_RQ_DESC_TMPL_MASK;
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*bytes_written =
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desc_ptr->bytes_written & CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK;
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*packet_err =
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(desc_ptr->bytes_written & CQ_FCP_RQ_DESC_PACKET_ERR_MASK) >>
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CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT;
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*vlan_stripped =
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(desc_ptr->bytes_written & CQ_FCP_RQ_DESC_VS_STRIPPED_MASK) >>
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CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT;
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*vlan = desc_ptr->vlan;
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*sof = desc_ptr->sof;
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*fck = desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FC_CRC_OK_MASK;
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*fcoe_err = (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCOE_ERR_MASK) >>
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CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT;
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*eof = desc_ptr->eof;
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*fcs_ok =
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(desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCS_OK_MASK) >>
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CQ_FCP_RQ_DESC_FCS_OK_SHIFT;
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}
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struct cq_sgl_desc {
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u16 exchange_id;
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u16 q_number;
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u32 active_burst_offset;
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u32 tot_data_bytes;
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u16 tmpl;
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u8 sgl_err;
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u8 type_color;
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};
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enum cq_sgl_err_types {
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CQ_SGL_ERR_NO_ERROR = 0,
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CQ_SGL_ERR_OVERFLOW, /* data ran beyond end of SGL */
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CQ_SGL_ERR_SGL_LCL_ADDR_ERR, /* sgl access to local vnic addr illegal*/
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CQ_SGL_ERR_ADDR_RSP_ERR, /* sgl address error */
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CQ_SGL_ERR_DATA_RSP_ERR, /* sgl data rsp error */
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CQ_SGL_ERR_CNT_ZERO_ERR, /* SGL count is 0 */
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CQ_SGL_ERR_CNT_MAX_ERR, /* SGL count is larger than supported */
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CQ_SGL_ERR_ORDER_ERR, /* frames recv on both ports, order err */
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CQ_SGL_ERR_DATA_LCL_ADDR_ERR,/* sgl data buf to local vnic addr ill */
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CQ_SGL_ERR_HOST_CQ_ERR, /* host cq entry to local vnic addr ill */
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};
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#define CQ_SGL_SGL_ERR_MASK 0x1f
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#define CQ_SGL_TMPL_MASK 0x1f
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static inline void cq_sgl_desc_dec(struct cq_sgl_desc *desc_ptr,
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u8 *type,
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u8 *color,
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u16 *q_number,
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u16 *exchange_id,
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u32 *active_burst_offset,
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u32 *tot_data_bytes,
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u16 *tmpl,
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u8 *sgl_err)
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{
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/* Cheat a little by assuming exchange_id is the same as completed
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index */
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cq_desc_dec((struct cq_desc *)desc_ptr, type, color, q_number,
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exchange_id);
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*active_burst_offset = desc_ptr->active_burst_offset;
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*tot_data_bytes = desc_ptr->tot_data_bytes;
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*tmpl = desc_ptr->tmpl & CQ_SGL_TMPL_MASK;
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*sgl_err = desc_ptr->sgl_err & CQ_SGL_SGL_ERR_MASK;
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}
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#endif /* _CQ_EXCH_DESC_H_ */
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