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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:53:36 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:53:36 -0700 |
commit | 39695224bd84dc4be29abad93a0ec232a16fc519 (patch) | |
tree | 2bfa5cb50788a4c8be9f2e9f4412e47a565f4508 /drivers/scsi/qla2xxx/qla_iocb.c | |
parent | a9bbd210a44102cc50b30a5f3d111dbf5f2f9cd4 (diff) | |
parent | ea038f63ac52439e7816295fa6064fe95e6c1f51 (diff) | |
download | kernel_samsung_crespo-39695224bd84dc4be29abad93a0ec232a16fc519.zip kernel_samsung_crespo-39695224bd84dc4be29abad93a0ec232a16fc519.tar.gz kernel_samsung_crespo-39695224bd84dc4be29abad93a0ec232a16fc519.tar.bz2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (209 commits)
[SCSI] fix oops during scsi scanning
[SCSI] libsrp: fix memory leak in srp_ring_free()
[SCSI] libiscsi, bnx2i: make bound ep check common
[SCSI] libiscsi: add completion function for drivers that do not need pdu processing
[SCSI] scsi_dh_rdac: changes for rdac debug logging
[SCSI] scsi_dh_rdac: changes to collect the rdac debug information during the initialization
[SCSI] scsi_dh_rdac: move the init code from rdac_activate to rdac_bus_attach
[SCSI] sg: fix oops in the error path in sg_build_indirect()
[SCSI] mptsas : Bump version to 3.04.12
[SCSI] mptsas : FW event thread and scsi mid layer deadlock in SYNCHRONIZE CACHE command
[SCSI] mptsas : Send DID_NO_CONNECT for pending IOs of removed device
[SCSI] mptsas : PAE Kernel more than 4 GB kernel panic
[SCSI] mptsas : NULL pointer on big endian systems causing Expander not to tear off
[SCSI] mptsas : Sanity check for phyinfo is added
[SCSI] scsi_dh_rdac: Add support for Sun StorageTek ST2500, ST2510 and ST2530
[SCSI] pmcraid: PMC-Sierra MaxRAID driver to support 6Gb/s SAS RAID controller
[SCSI] qla2xxx: Update version number to 8.03.01-k6.
[SCSI] qla2xxx: Properly delete rports attached to a vport.
[SCSI] qla2xxx: Correct various NPIV issues.
[SCSI] qla2xxx: Correct qla2x00_eh_wait_on_command() to wait correctly.
...
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_iocb.c')
-rw-r--r-- | drivers/scsi/qla2xxx/qla_iocb.c | 206 |
1 files changed, 205 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 13396be..c5ccac0 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -350,6 +350,7 @@ qla2x00_start_scsi(srb_t *sp) /* Build command packet */ req->current_outstanding_cmd = handle; req->outstanding_cmds[handle] = sp; + sp->handle = handle; sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; req->cnt -= req_cnt; @@ -778,6 +779,7 @@ qla24xx_start_scsi(srb_t *sp) /* Build command packet. */ req->current_outstanding_cmd = handle; req->outstanding_cmds[handle] = sp; + sp->handle = handle; sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle; req->cnt -= req_cnt; @@ -852,9 +854,211 @@ static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) struct qla_hw_data *ha = sp->fcport->vha->hw; int affinity = cmd->request->cpu; - if (ql2xmultique_tag && affinity >= 0 && + if (ha->flags.cpu_affinity_enabled && affinity >= 0 && affinity < ha->max_rsp_queues - 1) *rsp = ha->rsp_q_map[affinity + 1]; else *rsp = ha->rsp_q_map[0]; } + +/* Generic Control-SRB manipulation functions. */ + +static void * +qla2x00_alloc_iocbs(srb_t *sp) +{ + scsi_qla_host_t *vha = sp->fcport->vha; + struct qla_hw_data *ha = vha->hw; + struct req_que *req = ha->req_q_map[0]; + device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); + uint32_t index, handle; + request_t *pkt; + uint16_t cnt, req_cnt; + + pkt = NULL; + req_cnt = 1; + + /* Check for room in outstanding command list. */ + handle = req->current_outstanding_cmd; + for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) { + handle++; + if (handle == MAX_OUTSTANDING_COMMANDS) + handle = 1; + if (!req->outstanding_cmds[handle]) + break; + } + if (index == MAX_OUTSTANDING_COMMANDS) + goto queuing_error; + + /* Check for room on request queue. */ + if (req->cnt < req_cnt) { + if (ha->mqenable) + cnt = RD_REG_DWORD(®->isp25mq.req_q_out); + else if (IS_FWI2_CAPABLE(ha)) + cnt = RD_REG_DWORD(®->isp24.req_q_out); + else + cnt = qla2x00_debounce_register( + ISP_REQ_Q_OUT(ha, ®->isp)); + + if (req->ring_index < cnt) + req->cnt = cnt - req->ring_index; + else + req->cnt = req->length - + (req->ring_index - cnt); + } + if (req->cnt < req_cnt) + goto queuing_error; + + /* Prep packet */ + req->current_outstanding_cmd = handle; + req->outstanding_cmds[handle] = sp; + req->cnt -= req_cnt; + + pkt = req->ring_ptr; + memset(pkt, 0, REQUEST_ENTRY_SIZE); + pkt->entry_count = req_cnt; + pkt->handle = handle; + sp->handle = handle; + +queuing_error: + return pkt; +} + +static void +qla2x00_start_iocbs(srb_t *sp) +{ + struct qla_hw_data *ha = sp->fcport->vha->hw; + struct req_que *req = ha->req_q_map[0]; + device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); + struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp; + + /* Adjust ring index. */ + req->ring_index++; + if (req->ring_index == req->length) { + req->ring_index = 0; + req->ring_ptr = req->ring; + } else + req->ring_ptr++; + + /* Set chip new ring index. */ + if (ha->mqenable) { + WRT_REG_DWORD(®->isp25mq.req_q_in, req->ring_index); + RD_REG_DWORD(&ioreg->hccr); + } else if (IS_FWI2_CAPABLE(ha)) { + WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index); + RD_REG_DWORD_RELAXED(®->isp24.req_q_in); + } else { + WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), req->ring_index); + RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp)); + } +} + +static void +qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio) +{ + struct srb_logio *lio = sp->ctx; + + logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; + logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI); + if (lio->flags & SRB_LOGIN_COND_PLOGI) + logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI); + if (lio->flags & SRB_LOGIN_SKIP_PRLI) + logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI); + logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); + logio->port_id[0] = sp->fcport->d_id.b.al_pa; + logio->port_id[1] = sp->fcport->d_id.b.area; + logio->port_id[2] = sp->fcport->d_id.b.domain; + logio->vp_index = sp->fcport->vp_idx; +} + +static void +qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx) +{ + struct qla_hw_data *ha = sp->fcport->vha->hw; + struct srb_logio *lio = sp->ctx; + uint16_t opts; + + mbx->entry_type = MBX_IOCB_TYPE;; + SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); + mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT); + opts = lio->flags & SRB_LOGIN_COND_PLOGI ? BIT_0: 0; + opts |= lio->flags & SRB_LOGIN_SKIP_PRLI ? BIT_1: 0; + if (HAS_EXTENDED_IDS(ha)) { + mbx->mb1 = cpu_to_le16(sp->fcport->loop_id); + mbx->mb10 = cpu_to_le16(opts); + } else { + mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts); + } + mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); + mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | + sp->fcport->d_id.b.al_pa); + mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); +} + +static void +qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio) +{ + logio->entry_type = LOGINOUT_PORT_IOCB_TYPE; + logio->control_flags = + cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO); + logio->nport_handle = cpu_to_le16(sp->fcport->loop_id); + logio->port_id[0] = sp->fcport->d_id.b.al_pa; + logio->port_id[1] = sp->fcport->d_id.b.area; + logio->port_id[2] = sp->fcport->d_id.b.domain; + logio->vp_index = sp->fcport->vp_idx; +} + +static void +qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx) +{ + struct qla_hw_data *ha = sp->fcport->vha->hw; + + mbx->entry_type = MBX_IOCB_TYPE;; + SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id); + mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT); + mbx->mb1 = HAS_EXTENDED_IDS(ha) ? + cpu_to_le16(sp->fcport->loop_id): + cpu_to_le16(sp->fcport->loop_id << 8); + mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain); + mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 | + sp->fcport->d_id.b.al_pa); + mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx); + /* Implicit: mbx->mbx10 = 0. */ +} + +int +qla2x00_start_sp(srb_t *sp) +{ + int rval; + struct qla_hw_data *ha = sp->fcport->vha->hw; + void *pkt; + struct srb_ctx *ctx = sp->ctx; + unsigned long flags; + + rval = QLA_FUNCTION_FAILED; + spin_lock_irqsave(&ha->hardware_lock, flags); + pkt = qla2x00_alloc_iocbs(sp); + if (!pkt) + goto done; + + rval = QLA_SUCCESS; + switch (ctx->type) { + case SRB_LOGIN_CMD: + IS_FWI2_CAPABLE(ha) ? + qla24xx_login_iocb(sp, pkt): + qla2x00_login_iocb(sp, pkt); + break; + case SRB_LOGOUT_CMD: + IS_FWI2_CAPABLE(ha) ? + qla24xx_logout_iocb(sp, pkt): + qla2x00_logout_iocb(sp, pkt); + break; + default: + break; + } + + wmb(); + qla2x00_start_iocbs(sp); +done: + spin_unlock_irqrestore(&ha->hardware_lock, flags); + return rval; +} |