diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_target.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_target.h | 112 |
1 files changed, 103 insertions, 9 deletions
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h index 15a59c125c53..61072fb41b29 100644 --- a/drivers/scsi/qla2xxx/qla_target.h +++ b/drivers/scsi/qla2xxx/qla_target.h @@ -184,6 +184,7 @@ struct nack_to_isp { #define NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM 0x9 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL 0 +#define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_INVALID_OX_ID_RX_ID 0x17 #define NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_UNABLE_TO_SUPPLY_DATA 0x2a #define NOTIFY_ACK_SUCCESS 0x01 @@ -686,6 +687,8 @@ struct qla_tgt_func_tmpl { int (*handle_tmr)(struct qla_tgt_mgmt_cmd *, u64, uint16_t, uint32_t); struct qla_tgt_cmd *(*get_cmd)(struct fc_port *); + int (*get_cmd_ref)(struct qla_tgt_cmd *cmd); + void (*put_cmd_ref)(struct qla_tgt_cmd *cmd); void (*rel_cmd)(struct qla_tgt_cmd *); void (*free_cmd)(struct qla_tgt_cmd *); void (*free_mcmd)(struct qla_tgt_mgmt_cmd *); @@ -754,6 +757,7 @@ int qla2x00_wait_for_hba_online(struct scsi_qla_host *); #define QLA_TGT_STATE_NEED_DATA 1 /* target needs data to continue */ #define QLA_TGT_STATE_DATA_IN 2 /* Data arrived + target processing */ #define QLA_TGT_STATE_PROCESSED 3 /* target done processing */ +#define QLA_TGT_STATE_DONE 4 /* cmd being freed */ /* ATIO task_codes field */ #define ATIO_SIMPLE_QUEUE 0 @@ -822,18 +826,26 @@ struct qla_tgt { int notify_ack_expected; int abts_resp_expected; int modify_lun_expected; + + spinlock_t srr_lock; + struct list_head srr_list; + struct work_struct srr_work; + atomic_t tgt_global_resets_count; + struct list_head tgt_list_entry; }; struct qla_tgt_sess_op { struct scsi_qla_host *vha; uint32_t chip_reset; - struct atio_from_isp atio; struct work_struct work; struct list_head cmd_list; bool aborted; struct rsp_que *rsp; + + struct atio_from_isp atio; + /* DO NOT ADD ANYTHING ELSE HERE - atio must be last member */ }; enum trace_flags { @@ -858,6 +870,7 @@ enum trace_flags { TRC_DATA_IN = BIT_18, TRC_ABORT = BIT_19, TRC_DIF_ERR = BIT_20, + TRC_SRR_IMM = BIT_21, }; struct qla_tgt_cmd { @@ -876,25 +889,36 @@ struct qla_tgt_cmd { /* Sense buffer that will be mapped into outgoing status */ unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; - spinlock_t cmd_lock; - /* to save extra sess dereferences */ unsigned int conf_compl_supported:1; unsigned int sg_mapped:1; + + /* Call qlt_free_sg() if set. */ + unsigned int free_sg:1; + unsigned int write_data_transferred:1; + + /* Set if the SCSI status was sent successfully. */ + unsigned int rsp_sent:1; + unsigned int q_full:1; unsigned int term_exchg:1; unsigned int cmd_sent_to_fw:1; unsigned int cmd_in_wq:1; unsigned int edif:1; + /* Set if a SRR was rejected. */ + unsigned int srr_failed:1; + + /* Set if the exchange has been terminated. */ + unsigned int sent_term_exchg:1; + /* - * This variable may be set from outside the LIO and I/O completion - * callback functions. Do not declare this member variable as a - * bitfield to avoid a read-modify-write operation when this variable - * is set. + * Set if sent_term_exchg is set, or if the cmd was aborted by a TMR, + * or if some other error prevents normal processing of the command. */ - unsigned int aborted; + unsigned int aborted:1; + struct qla_tgt_srr *srr; struct scatterlist *sg; /* cmd data buffer SG vector */ int sg_cnt; /* SG segments count */ int bufflen; /* cmd buffer length */ @@ -925,13 +949,23 @@ struct qla_tgt_cmd { uint8_t scsi_status, sense_key, asc, ascq; struct crc_context *ctx; - const uint8_t *cdb; + uint8_t *cdb; uint64_t lba; + int cdb_len; uint16_t a_guard, e_guard, a_app_tag, e_app_tag; uint32_t a_ref_tag, e_ref_tag; #define DIF_BUNDL_DMA_VALID 1 uint16_t prot_flags; + unsigned long jiffies_at_term_exchg; + + /* + * jiffies64 when qlt_rdy_to_xfer() or qlt_xmit_response() first + * called, or 0 when not in those states. Used to limit the number of + * SRR retries. + */ + uint64_t jiffies_at_hw_st_entry; + uint64_t jiffies_at_alloc; uint64_t jiffies_at_free; @@ -965,6 +999,7 @@ struct qla_tgt_mgmt_cmd { unsigned int flags; #define QLA24XX_MGMT_SEND_NACK BIT_0 #define QLA24XX_MGMT_ABORT_IO_ATTR_VALID BIT_1 +#define QLA24XX_MGMT_LLD_OWNED BIT_2 uint32_t reset_count; struct work_struct work; uint64_t unpacked_lun; @@ -993,6 +1028,45 @@ struct qla_tgt_prm { uint16_t tot_dsds; }; +/* + * SRR (Sequence Retransmission Request) - resend or re-receive some or all + * data or status to recover from a transient I/O error. + */ +struct qla_tgt_srr { + /* + * Copy of immediate notify SRR message received from hw; valid only if + * imm_ntfy_recvd is true. + */ + struct imm_ntfy_from_isp imm_ntfy; + + struct list_head srr_list_entry; + + /* The command affected by this SRR, or NULL if not yet determined. */ + struct qla_tgt_cmd *cmd; + + /* Used to detect if the HBA has been reset since receiving the SRR. */ + uint32_t reset_count; + + /* + * The hardware sends two messages for each SRR - an immediate notify + * and a CTIO with CTIO_SRR_RECEIVED status. These keep track of which + * messages have been received. The SRR can be processed once both of + * these are true. + */ + bool imm_ntfy_recvd; + bool ctio_recvd; + + /* + * This is set to true if the affected command was aborted (cmd may be + * set to NULL), in which case the immediate notify exchange also needs + * to be aborted. + */ + bool aborted; + + /* This is set to true to force the SRR to be rejected. */ + bool reject; +}; + /* Check for Switch reserved address */ #define IS_SW_RESV_ADDR(_s_id) \ ((_s_id.b.domain == 0xff) && ((_s_id.b.area & 0xf0) == 0xf0)) @@ -1048,6 +1122,20 @@ static inline uint32_t sid_to_key(const be_id_t s_id) } /* + * Free the scatterlist allocated by qlt_set_data_offset(). Call this only if + * cmd->free_sg is set. + */ +static inline void qlt_free_sg(struct qla_tgt_cmd *cmd) +{ + /* + * The scatterlist may be chained to the original scatterlist, but we + * only need to free the first segment here since that is the only part + * allocated by qlt_set_data_offset(). + */ + kfree(cmd->sg); +} + +/* * Exported symbols from qla_target.c LLD logic used by qla2xxx code.. */ extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, struct rsp_que *, @@ -1055,9 +1143,14 @@ extern void qlt_response_pkt_all_vps(struct scsi_qla_host *, struct rsp_que *, extern int qlt_rdy_to_xfer(struct qla_tgt_cmd *); extern int qlt_xmit_response(struct qla_tgt_cmd *, int, uint8_t); extern int qlt_abort_cmd(struct qla_tgt_cmd *); +void qlt_srr_abort(struct qla_tgt_cmd *cmd, bool reject); +void qlt_send_term_exchange(struct qla_qpair *qpair, + struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked); extern void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *); +void qlt_free_ul_mcmd(struct qla_hw_data *ha, struct qla_tgt_mgmt_cmd *mcmd); extern void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *); extern void qlt_free_cmd(struct qla_tgt_cmd *cmd); +extern void qlt_unmap_sg(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd); extern void qlt_async_event(uint16_t, struct scsi_qla_host *, uint16_t *); extern void qlt_enable_vha(struct scsi_qla_host *); extern void qlt_vport_create(struct scsi_qla_host *, struct qla_hw_data *); @@ -1073,6 +1166,7 @@ extern void qlt_81xx_config_nvram_stage2(struct scsi_qla_host *, struct init_cb_81xx *); extern void qlt_81xx_config_nvram_stage1(struct scsi_qla_host *, struct nvram_81xx *); +void qlt_config_nvram_with_fw_version(struct scsi_qla_host *vha); extern void qlt_modify_vp_config(struct scsi_qla_host *, struct vp_config_entry_24xx *); extern void qlt_probe_one_stage1(struct scsi_qla_host *, struct qla_hw_data *); |