From 969a619966d84ec0d2b8392df83cd2693411e46e Mon Sep 17 00:00:00 2001 From: Sawan Chandak Date: Wed, 27 Jan 2016 12:03:32 -0500 Subject: [PATCH] qla2xxx: Add support for buffer to buffer credit value for ISP27XX. Signed-off-by: Sawan Chandak Signed-off-by: Himanshu Madhani Reviewed-by: Johannes Thumshirn Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/qla2xxx/qla_bsg.c | 55 ++++++++++++++++++++++++++++++++++ drivers/scsi/qla2xxx/qla_bsg.h | 24 +++++++++++++++ drivers/scsi/qla2xxx/qla_def.h | 2 ++ drivers/scsi/qla2xxx/qla_fw.h | 4 ++- drivers/scsi/qla2xxx/qla_mbx.c | 8 +++++ 5 files changed, 92 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c index 64fe17a72f01..d135d6a4ccac 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.c +++ b/drivers/scsi/qla2xxx/qla_bsg.c @@ -2180,6 +2180,58 @@ qla27xx_set_flash_upd_cap(struct fc_bsg_job *bsg_job) return 0; } +static int +qla27xx_get_bbcr_data(struct fc_bsg_job *bsg_job) +{ + struct Scsi_Host *host = bsg_job->shost; + scsi_qla_host_t *vha = shost_priv(host); + struct qla_hw_data *ha = vha->hw; + struct qla_bbcr_data bbcr; + uint16_t loop_id, topo, sw_cap; + uint8_t domain, area, al_pa, state; + int rval; + + if (!(IS_QLA27XX(ha))) + return -EPERM; + + memset(&bbcr, 0, sizeof(bbcr)); + + if (vha->flags.bbcr_enable) + bbcr.status = QLA_BBCR_STATUS_ENABLED; + else + bbcr.status = QLA_BBCR_STATUS_DISABLED; + + if (bbcr.status == QLA_BBCR_STATUS_ENABLED) { + rval = qla2x00_get_adapter_id(vha, &loop_id, &al_pa, + &area, &domain, &topo, &sw_cap); + if (rval != QLA_SUCCESS) + return -EIO; + + state = (vha->bbcr >> 12) & 0x1; + + if (state) { + bbcr.state = QLA_BBCR_STATE_OFFLINE; + bbcr.offline_reason_code = QLA_BBCR_REASON_LOGIN_REJECT; + } else { + bbcr.state = QLA_BBCR_STATE_ONLINE; + bbcr.negotiated_bbscn = (vha->bbcr >> 8) & 0xf; + } + + bbcr.configured_bbscn = vha->bbcr & 0xf; + } + + sg_copy_from_buffer(bsg_job->reply_payload.sg_list, + bsg_job->reply_payload.sg_cnt, &bbcr, sizeof(bbcr)); + bsg_job->reply->reply_payload_rcv_len = sizeof(bbcr); + + bsg_job->reply->reply_data.vendor_reply.vendor_rsp[0] = EXT_STATUS_OK; + + bsg_job->reply_len = sizeof(struct fc_bsg_reply); + bsg_job->reply->result = DID_OK << 16; + bsg_job->job_done(bsg_job); + return 0; +} + static int qla2x00_process_vendor_specific(struct fc_bsg_job *bsg_job) { @@ -2241,6 +2293,9 @@ qla2x00_process_vendor_specific(struct fc_bsg_job *bsg_job) case QL_VND_SET_FLASH_UPDATE_CAPS: return qla27xx_set_flash_upd_cap(bsg_job); + case QL_VND_GET_BBCR_DATA: + return qla27xx_get_bbcr_data(bsg_job); + default: return -ENOSYS; } diff --git a/drivers/scsi/qla2xxx/qla_bsg.h b/drivers/scsi/qla2xxx/qla_bsg.h index 6c45bf4c9981..42751776f363 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.h +++ b/drivers/scsi/qla2xxx/qla_bsg.h @@ -27,6 +27,7 @@ #define QL_VND_SERDES_OP_EX 0x14 #define QL_VND_GET_FLASH_UPDATE_CAPS 0x15 #define QL_VND_SET_FLASH_UPDATE_CAPS 0x16 +#define QL_VND_GET_BBCR_DATA 0x17 /* BSG Vendor specific subcode returns */ #define EXT_STATUS_OK 0 @@ -239,4 +240,27 @@ struct qla_flash_update_caps { uint32_t outage_duration; uint8_t reserved[20]; } __packed; + +/* BB_CR Status */ +#define QLA_BBCR_STATUS_DISABLED 0 +#define QLA_BBCR_STATUS_ENABLED 1 + +/* BB_CR State */ +#define QLA_BBCR_STATE_OFFLINE 0 +#define QLA_BBCR_STATE_ONLINE 1 + +/* BB_CR Offline Reason Code */ +#define QLA_BBCR_REASON_PORT_SPEED 1 +#define QLA_BBCR_REASON_PEER_PORT 2 +#define QLA_BBCR_REASON_SWITCH 3 +#define QLA_BBCR_REASON_LOGIN_REJECT 4 + +struct qla_bbcr_data { + uint8_t status; /* 1 - enabled, 0 - Disabled */ + uint8_t state; /* 1 - online, 0 - offline */ + uint8_t configured_bbscn; /* 0-15 */ + uint8_t negotiated_bbscn; /* 0-15 */ + uint8_t offline_reason_code; + uint8_t reserved[11]; +} __packed; #endif diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 987480fb4612..c4bd62ade713 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -3583,6 +3583,7 @@ typedef struct scsi_qla_host { uint32_t delete_progress:1; uint32_t fw_tgt_reported:1; + uint32_t bbcr_enable:1; } flags; atomic_t loop_state; @@ -3715,6 +3716,7 @@ typedef struct scsi_qla_host { atomic_t vref_count; struct qla8044_reset_template reset_tmplt; struct qla_tgt_counters tgt_counters; + uint16_t bbcr; } scsi_qla_host_t; struct qla27xx_image_status { diff --git a/drivers/scsi/qla2xxx/qla_fw.h b/drivers/scsi/qla2xxx/qla_fw.h index 7f095e30bd1d..4c0f3a774799 100644 --- a/drivers/scsi/qla2xxx/qla_fw.h +++ b/drivers/scsi/qla2xxx/qla_fw.h @@ -1288,7 +1288,9 @@ struct vp_rpt_id_entry_24xx { uint8_t vp_idx_map[16]; - uint8_t reserved_4[32]; + uint8_t reserved_4[28]; + uint16_t bbcr; + uint8_t reserved_5[6]; }; #define VF_EVFP_IOCB_TYPE 0x26 /* Exchange Virtual Fabric Parameters entry. */ diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 87e6758302f6..4433cfb8f0e6 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -1349,6 +1349,8 @@ qla2x00_get_adapter_id(scsi_qla_host_t *vha, uint16_t *id, uint8_t *al_pa, mcp->in_mb |= MBX_13|MBX_12|MBX_11|MBX_10; if (IS_FWI2_CAPABLE(vha->hw)) mcp->in_mb |= MBX_19|MBX_18|MBX_17|MBX_16; + if (IS_QLA27XX(vha->hw)) + mcp->in_mb |= MBX_15; mcp->tov = MBX_TOV_SECONDS; mcp->flags = 0; rval = qla2x00_mailbox_command(vha, mcp); @@ -1400,6 +1402,9 @@ qla2x00_get_adapter_id(scsi_qla_host_t *vha, uint16_t *id, uint8_t *al_pa, wwn_to_u64(vha->port_name)); } } + + if (IS_QLA27XX(vha->hw)) + vha->bbcr = mcp->mb[15]; } return rval; @@ -3612,6 +3617,9 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha, rptid_entry->port_id[2], rptid_entry->port_id[1], rptid_entry->port_id[0]); + /* buffer to buffer credit flag */ + vha->flags.bbcr_enable = (rptid_entry->bbcr & 0xf) != 0; + /* FA-WWN is only for physical port */ if (!vp_idx) { void *wwpn = ha->init_cb->port_name; -- 2.20.1