diff options
Diffstat (limited to 'drivers/scsi/be2iscsi/be_cmds.c')
| -rw-r--r-- | drivers/scsi/be2iscsi/be_cmds.c | 88 |
1 files changed, 76 insertions, 12 deletions
diff --git a/drivers/scsi/be2iscsi/be_cmds.c b/drivers/scsi/be2iscsi/be_cmds.c index f008708f1b0..67098578fba 100644 --- a/drivers/scsi/be2iscsi/be_cmds.c +++ b/drivers/scsi/be2iscsi/be_cmds.c @@ -1,5 +1,5 @@ /** - * Copyright (C) 2005 - 2009 ServerEngines + * Copyright (C) 2005 - 2010 ServerEngines * All rights reserved. * * This program is free software; you can redistribute it and/or @@ -19,7 +19,7 @@ #include "be_mgmt.h" #include "be_main.h" -static void be_mcc_notify(struct beiscsi_hba *phba) +void be_mcc_notify(struct beiscsi_hba *phba) { struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q; u32 val = 0; @@ -29,6 +29,52 @@ static void be_mcc_notify(struct beiscsi_hba *phba) iowrite32(val, phba->db_va + DB_MCCQ_OFFSET); } +unsigned int alloc_mcc_tag(struct beiscsi_hba *phba) +{ + unsigned int tag = 0; + unsigned int num = 0; + +mcc_tag_rdy: + if (phba->ctrl.mcc_tag_available) { + tag = phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index]; + phba->ctrl.mcc_tag[phba->ctrl.mcc_alloc_index] = 0; + phba->ctrl.mcc_numtag[tag] = 0; + } else { + udelay(100); + num++; + if (num < mcc_timeout) + goto mcc_tag_rdy; + } + if (tag) { + phba->ctrl.mcc_tag_available--; + if (phba->ctrl.mcc_alloc_index == (MAX_MCC_CMD - 1)) + phba->ctrl.mcc_alloc_index = 0; + else + phba->ctrl.mcc_alloc_index++; + } + return tag; +} + +void free_mcc_tag(struct be_ctrl_info *ctrl, unsigned int tag) +{ + spin_lock(&ctrl->mbox_lock); + tag = tag & 0x000000FF; + ctrl->mcc_tag[ctrl->mcc_free_index] = tag; + if (ctrl->mcc_free_index == (MAX_MCC_CMD - 1)) + ctrl->mcc_free_index = 0; + else + ctrl->mcc_free_index++; + ctrl->mcc_tag_available++; + spin_unlock(&ctrl->mbox_lock); +} + +bool is_link_state_evt(u32 trailer) +{ + return (((trailer >> ASYNC_TRAILER_EVENT_CODE_SHIFT) & + ASYNC_TRAILER_EVENT_CODE_MASK) == + ASYNC_EVENT_CODE_LINK_STATE); +} + static inline bool be_mcc_compl_is_new(struct be_mcc_compl *compl) { if (compl->flags != 0) { @@ -64,12 +110,30 @@ static int be_mcc_compl_process(struct be_ctrl_info *ctrl, return 0; } - -static inline bool is_link_state_evt(u32 trailer) +int be_mcc_compl_process_isr(struct be_ctrl_info *ctrl, + struct be_mcc_compl *compl) { - return (((trailer >> ASYNC_TRAILER_EVENT_CODE_SHIFT) & - ASYNC_TRAILER_EVENT_CODE_MASK) == - ASYNC_EVENT_CODE_LINK_STATE); + u16 compl_status, extd_status; + unsigned short tag; + + be_dws_le_to_cpu(compl, 4); + + compl_status = (compl->status >> CQE_STATUS_COMPL_SHIFT) & + CQE_STATUS_COMPL_MASK; + /* The ctrl.mcc_numtag[tag] is filled with + * [31] = valid, [30:24] = Rsvd, [23:16] = wrb, [15:8] = extd_status, + * [7:0] = compl_status + */ + tag = (compl->tag0 & 0x000000FF); + extd_status = (compl->status >> CQE_STATUS_EXTD_SHIFT) & + CQE_STATUS_EXTD_MASK; + + ctrl->mcc_numtag[tag] = 0x80000000; + ctrl->mcc_numtag[tag] |= (compl->tag0 & 0x00FF0000); + ctrl->mcc_numtag[tag] |= (extd_status & 0x000000FF) << 8; + ctrl->mcc_numtag[tag] |= (compl_status & 0x000000FF); + wake_up_interruptible(&ctrl->mcc_wait[tag]); + return 0; } static struct be_mcc_compl *be_mcc_compl_get(struct beiscsi_hba *phba) @@ -89,7 +153,7 @@ static void be2iscsi_fail_session(struct iscsi_cls_session *cls_session) iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED); } -static void beiscsi_async_link_state_process(struct beiscsi_hba *phba, +void beiscsi_async_link_state_process(struct beiscsi_hba *phba, struct be_async_event_link_state *evt) { switch (evt->port_link_status) { @@ -97,13 +161,13 @@ static void beiscsi_async_link_state_process(struct beiscsi_hba *phba, SE_DEBUG(DBG_LVL_1, "Link Down on Physical Port %d \n", evt->physical_port); phba->state |= BE_ADAPTER_LINK_DOWN; + iscsi_host_for_each_session(phba->shost, + be2iscsi_fail_session); break; case ASYNC_EVENT_LINK_UP: phba->state = BE_ADAPTER_UP; SE_DEBUG(DBG_LVL_1, "Link UP on Physical Port %d \n", evt->physical_port); - iscsi_host_for_each_session(phba->shost, - be2iscsi_fail_session); break; default: SE_DEBUG(DBG_LVL_1, "Unexpected Async Notification %d on" @@ -162,7 +226,6 @@ int beiscsi_process_mcc(struct beiscsi_hba *phba) /* Wait till no more pending mcc requests are present */ static int be_mcc_wait_compl(struct beiscsi_hba *phba) { -#define mcc_timeout 120000 /* 5s timeout */ int i, status; for (i = 0; i < mcc_timeout; i++) { status = beiscsi_process_mcc(phba); @@ -372,9 +435,10 @@ struct be_mcc_wrb *wrb_from_mccq(struct beiscsi_hba *phba) BUG_ON(atomic_read(&mccq->used) >= mccq->len); wrb = queue_head_node(mccq); + memset(wrb, 0, sizeof(*wrb)); + wrb->tag0 = (mccq->head & 0x000000FF) << 16; queue_head_inc(mccq); atomic_inc(&mccq->used); - memset(wrb, 0, sizeof(*wrb)); return wrb; } |