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695 lines
19 KiB
695 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Aic94xx Task Management Functions |
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* |
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* Copyright (C) 2005 Adaptec, Inc. All rights reserved. |
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* Copyright (C) 2005 Luben Tuikov <[email protected]> |
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*/ |
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|
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#include <linux/spinlock.h> |
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#include <linux/gfp.h> |
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#include "aic94xx.h" |
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#include "aic94xx_sas.h" |
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#include "aic94xx_hwi.h" |
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|
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/* ---------- Internal enqueue ---------- */ |
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|
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static int asd_enqueue_internal(struct asd_ascb *ascb, |
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void (*tasklet_complete)(struct asd_ascb *, |
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struct done_list_struct *), |
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void (*timed_out)(struct timer_list *t)) |
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{ |
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int res; |
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ascb->tasklet_complete = tasklet_complete; |
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ascb->uldd_timer = 1; |
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ascb->timer.function = timed_out; |
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ascb->timer.expires = jiffies + AIC94XX_SCB_TIMEOUT; |
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add_timer(&ascb->timer); |
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res = asd_post_ascb_list(ascb->ha, ascb, 1); |
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if (unlikely(res)) |
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del_timer(&ascb->timer); |
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return res; |
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} |
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/* ---------- CLEAR NEXUS ---------- */ |
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struct tasklet_completion_status { |
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int dl_opcode; |
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int tmf_state; |
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u8 tag_valid:1; |
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__be16 tag; |
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}; |
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#define DECLARE_TCS(tcs) \ |
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struct tasklet_completion_status tcs = { \ |
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.dl_opcode = 0, \ |
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.tmf_state = 0, \ |
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.tag_valid = 0, \ |
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.tag = 0, \ |
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} |
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static void asd_clear_nexus_tasklet_complete(struct asd_ascb *ascb, |
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struct done_list_struct *dl) |
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{ |
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struct tasklet_completion_status *tcs = ascb->uldd_task; |
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ASD_DPRINTK("%s: here\n", __func__); |
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if (!del_timer(&ascb->timer)) { |
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ASD_DPRINTK("%s: couldn't delete timer\n", __func__); |
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return; |
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} |
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ASD_DPRINTK("%s: opcode: 0x%x\n", __func__, dl->opcode); |
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tcs->dl_opcode = dl->opcode; |
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complete(ascb->completion); |
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asd_ascb_free(ascb); |
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} |
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static void asd_clear_nexus_timedout(struct timer_list *t) |
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{ |
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struct asd_ascb *ascb = from_timer(ascb, t, timer); |
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struct tasklet_completion_status *tcs = ascb->uldd_task; |
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ASD_DPRINTK("%s: here\n", __func__); |
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tcs->dl_opcode = TMF_RESP_FUNC_FAILED; |
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complete(ascb->completion); |
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} |
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#define CLEAR_NEXUS_PRE \ |
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struct asd_ascb *ascb; \ |
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struct scb *scb; \ |
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int res; \ |
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DECLARE_COMPLETION_ONSTACK(completion); \ |
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DECLARE_TCS(tcs); \ |
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\ |
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ASD_DPRINTK("%s: PRE\n", __func__); \ |
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res = 1; \ |
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ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); \ |
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if (!ascb) \ |
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return -ENOMEM; \ |
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\ |
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ascb->completion = &completion; \ |
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ascb->uldd_task = &tcs; \ |
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scb = ascb->scb; \ |
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scb->header.opcode = CLEAR_NEXUS |
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#define CLEAR_NEXUS_POST \ |
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ASD_DPRINTK("%s: POST\n", __func__); \ |
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res = asd_enqueue_internal(ascb, asd_clear_nexus_tasklet_complete, \ |
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asd_clear_nexus_timedout); \ |
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if (res) \ |
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goto out_err; \ |
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ASD_DPRINTK("%s: clear nexus posted, waiting...\n", __func__); \ |
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wait_for_completion(&completion); \ |
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res = tcs.dl_opcode; \ |
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if (res == TC_NO_ERROR) \ |
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res = TMF_RESP_FUNC_COMPLETE; \ |
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return res; \ |
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out_err: \ |
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asd_ascb_free(ascb); \ |
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return res |
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int asd_clear_nexus_ha(struct sas_ha_struct *sas_ha) |
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{ |
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struct asd_ha_struct *asd_ha = sas_ha->lldd_ha; |
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CLEAR_NEXUS_PRE; |
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scb->clear_nexus.nexus = NEXUS_ADAPTER; |
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CLEAR_NEXUS_POST; |
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} |
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int asd_clear_nexus_port(struct asd_sas_port *port) |
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{ |
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struct asd_ha_struct *asd_ha = port->ha->lldd_ha; |
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CLEAR_NEXUS_PRE; |
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scb->clear_nexus.nexus = NEXUS_PORT; |
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scb->clear_nexus.conn_mask = port->phy_mask; |
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CLEAR_NEXUS_POST; |
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} |
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enum clear_nexus_phase { |
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NEXUS_PHASE_PRE, |
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NEXUS_PHASE_POST, |
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NEXUS_PHASE_RESUME, |
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}; |
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static int asd_clear_nexus_I_T(struct domain_device *dev, |
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enum clear_nexus_phase phase) |
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{ |
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; |
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CLEAR_NEXUS_PRE; |
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scb->clear_nexus.nexus = NEXUS_I_T; |
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switch (phase) { |
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case NEXUS_PHASE_PRE: |
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scb->clear_nexus.flags = EXEC_Q | SUSPEND_TX; |
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break; |
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case NEXUS_PHASE_POST: |
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scb->clear_nexus.flags = SEND_Q | NOTINQ; |
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break; |
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case NEXUS_PHASE_RESUME: |
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scb->clear_nexus.flags = RESUME_TX; |
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} |
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scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long) |
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dev->lldd_dev); |
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CLEAR_NEXUS_POST; |
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} |
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int asd_I_T_nexus_reset(struct domain_device *dev) |
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{ |
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int res, tmp_res, i; |
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struct sas_phy *phy = sas_get_local_phy(dev); |
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/* Standard mandates link reset for ATA (type 0) and |
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* hard reset for SSP (type 1) */ |
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int reset_type = (dev->dev_type == SAS_SATA_DEV || |
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(dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; |
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asd_clear_nexus_I_T(dev, NEXUS_PHASE_PRE); |
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/* send a hard reset */ |
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ASD_DPRINTK("sending %s reset to %s\n", |
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reset_type ? "hard" : "soft", dev_name(&phy->dev)); |
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res = sas_phy_reset(phy, reset_type); |
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if (res == TMF_RESP_FUNC_COMPLETE || res == -ENODEV) { |
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/* wait for the maximum settle time */ |
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msleep(500); |
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/* clear all outstanding commands (keep nexus suspended) */ |
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asd_clear_nexus_I_T(dev, NEXUS_PHASE_POST); |
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} |
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for (i = 0 ; i < 3; i++) { |
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tmp_res = asd_clear_nexus_I_T(dev, NEXUS_PHASE_RESUME); |
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if (tmp_res == TC_RESUME) |
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goto out; |
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msleep(500); |
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} |
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/* This is a bit of a problem: the sequencer is still suspended |
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* and is refusing to resume. Hope it will resume on a bigger hammer |
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* or the disk is lost */ |
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dev_printk(KERN_ERR, &phy->dev, |
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"Failed to resume nexus after reset 0x%x\n", tmp_res); |
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res = TMF_RESP_FUNC_FAILED; |
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out: |
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sas_put_local_phy(phy); |
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return res; |
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} |
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static int asd_clear_nexus_I_T_L(struct domain_device *dev, u8 *lun) |
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{ |
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; |
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CLEAR_NEXUS_PRE; |
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scb->clear_nexus.nexus = NEXUS_I_T_L; |
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scb->clear_nexus.flags = SEND_Q | EXEC_Q | NOTINQ; |
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memcpy(scb->clear_nexus.ssp_task.lun, lun, 8); |
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scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long) |
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dev->lldd_dev); |
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CLEAR_NEXUS_POST; |
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} |
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static int asd_clear_nexus_tag(struct sas_task *task) |
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{ |
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struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha; |
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struct asd_ascb *tascb = task->lldd_task; |
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CLEAR_NEXUS_PRE; |
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scb->clear_nexus.nexus = NEXUS_TAG; |
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memcpy(scb->clear_nexus.ssp_task.lun, task->ssp_task.LUN, 8); |
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scb->clear_nexus.ssp_task.tag = tascb->tag; |
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if (task->dev->tproto) |
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scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long) |
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task->dev->lldd_dev); |
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CLEAR_NEXUS_POST; |
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} |
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static int asd_clear_nexus_index(struct sas_task *task) |
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{ |
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struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha; |
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struct asd_ascb *tascb = task->lldd_task; |
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CLEAR_NEXUS_PRE; |
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scb->clear_nexus.nexus = NEXUS_TRANS_CX; |
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if (task->dev->tproto) |
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scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long) |
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task->dev->lldd_dev); |
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scb->clear_nexus.index = cpu_to_le16(tascb->tc_index); |
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CLEAR_NEXUS_POST; |
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} |
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/* ---------- TMFs ---------- */ |
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static void asd_tmf_timedout(struct timer_list *t) |
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{ |
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struct asd_ascb *ascb = from_timer(ascb, t, timer); |
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struct tasklet_completion_status *tcs = ascb->uldd_task; |
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ASD_DPRINTK("tmf timed out\n"); |
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tcs->tmf_state = TMF_RESP_FUNC_FAILED; |
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complete(ascb->completion); |
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} |
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static int asd_get_tmf_resp_tasklet(struct asd_ascb *ascb, |
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struct done_list_struct *dl) |
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{ |
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struct asd_ha_struct *asd_ha = ascb->ha; |
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unsigned long flags; |
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struct tc_resp_sb_struct { |
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__le16 index_escb; |
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u8 len_lsb; |
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u8 flags; |
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} __attribute__ ((packed)) *resp_sb = (void *) dl->status_block; |
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int edb_id = ((resp_sb->flags & 0x70) >> 4)-1; |
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struct asd_ascb *escb; |
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struct asd_dma_tok *edb; |
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struct ssp_frame_hdr *fh; |
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struct ssp_response_iu *ru; |
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int res = TMF_RESP_FUNC_FAILED; |
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ASD_DPRINTK("tmf resp tasklet\n"); |
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spin_lock_irqsave(&asd_ha->seq.tc_index_lock, flags); |
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escb = asd_tc_index_find(&asd_ha->seq, |
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(int)le16_to_cpu(resp_sb->index_escb)); |
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spin_unlock_irqrestore(&asd_ha->seq.tc_index_lock, flags); |
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if (!escb) { |
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ASD_DPRINTK("Uh-oh! No escb for this dl?!\n"); |
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return res; |
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} |
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edb = asd_ha->seq.edb_arr[edb_id + escb->edb_index]; |
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ascb->tag = *(__be16 *)(edb->vaddr+4); |
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fh = edb->vaddr + 16; |
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ru = edb->vaddr + 16 + sizeof(*fh); |
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res = ru->status; |
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if (ru->datapres == 1) /* Response data present */ |
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res = ru->resp_data[3]; |
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#if 0 |
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ascb->tag = fh->tag; |
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#endif |
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ascb->tag_valid = 1; |
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asd_invalidate_edb(escb, edb_id); |
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return res; |
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} |
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static void asd_tmf_tasklet_complete(struct asd_ascb *ascb, |
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struct done_list_struct *dl) |
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{ |
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struct tasklet_completion_status *tcs; |
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if (!del_timer(&ascb->timer)) |
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return; |
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tcs = ascb->uldd_task; |
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ASD_DPRINTK("tmf tasklet complete\n"); |
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tcs->dl_opcode = dl->opcode; |
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if (dl->opcode == TC_SSP_RESP) { |
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tcs->tmf_state = asd_get_tmf_resp_tasklet(ascb, dl); |
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tcs->tag_valid = ascb->tag_valid; |
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tcs->tag = ascb->tag; |
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} |
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complete(ascb->completion); |
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asd_ascb_free(ascb); |
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} |
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static int asd_clear_nexus(struct sas_task *task) |
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{ |
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int res = TMF_RESP_FUNC_FAILED; |
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int leftover; |
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struct asd_ascb *tascb = task->lldd_task; |
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DECLARE_COMPLETION_ONSTACK(completion); |
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unsigned long flags; |
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tascb->completion = &completion; |
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ASD_DPRINTK("task not done, clearing nexus\n"); |
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if (tascb->tag_valid) |
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res = asd_clear_nexus_tag(task); |
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else |
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res = asd_clear_nexus_index(task); |
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leftover = wait_for_completion_timeout(&completion, |
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AIC94XX_SCB_TIMEOUT); |
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tascb->completion = NULL; |
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ASD_DPRINTK("came back from clear nexus\n"); |
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spin_lock_irqsave(&task->task_state_lock, flags); |
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if (leftover < 1) |
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res = TMF_RESP_FUNC_FAILED; |
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if (task->task_state_flags & SAS_TASK_STATE_DONE) |
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res = TMF_RESP_FUNC_COMPLETE; |
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spin_unlock_irqrestore(&task->task_state_lock, flags); |
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return res; |
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} |
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/** |
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* asd_abort_task -- ABORT TASK TMF |
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* @task: the task to be aborted |
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* |
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* Before calling ABORT TASK the task state flags should be ORed with |
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* SAS_TASK_STATE_ABORTED (unless SAS_TASK_STATE_DONE is set) under |
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* the task_state_lock IRQ spinlock, then ABORT TASK *must* be called. |
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* |
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* Implements the ABORT TASK TMF, I_T_L_Q nexus. |
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* Returns: SAS TMF responses (see sas_task.h), |
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* -ENOMEM, |
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* -SAS_QUEUE_FULL. |
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* |
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* When ABORT TASK returns, the caller of ABORT TASK checks first the |
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* task->task_state_flags, and then the return value of ABORT TASK. |
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* |
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* If the task has task state bit SAS_TASK_STATE_DONE set, then the |
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* task was completed successfully prior to it being aborted. The |
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* caller of ABORT TASK has responsibility to call task->task_done() |
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* xor free the task, depending on their framework. The return code |
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* is TMF_RESP_FUNC_FAILED in this case. |
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* |
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* Else the SAS_TASK_STATE_DONE bit is not set, |
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* If the return code is TMF_RESP_FUNC_COMPLETE, then |
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* the task was aborted successfully. The caller of |
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* ABORT TASK has responsibility to call task->task_done() |
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* to finish the task, xor free the task depending on their |
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* framework. |
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* else |
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* the ABORT TASK returned some kind of error. The task |
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* was _not_ cancelled. Nothing can be assumed. |
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* The caller of ABORT TASK may wish to retry. |
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*/ |
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int asd_abort_task(struct sas_task *task) |
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{ |
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struct asd_ascb *tascb = task->lldd_task; |
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struct asd_ha_struct *asd_ha = tascb->ha; |
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int res = 1; |
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unsigned long flags; |
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struct asd_ascb *ascb = NULL; |
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struct scb *scb; |
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int leftover; |
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DECLARE_TCS(tcs); |
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DECLARE_COMPLETION_ONSTACK(completion); |
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DECLARE_COMPLETION_ONSTACK(tascb_completion); |
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tascb->completion = &tascb_completion; |
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spin_lock_irqsave(&task->task_state_lock, flags); |
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if (task->task_state_flags & SAS_TASK_STATE_DONE) { |
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spin_unlock_irqrestore(&task->task_state_lock, flags); |
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res = TMF_RESP_FUNC_COMPLETE; |
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ASD_DPRINTK("%s: task 0x%p done\n", __func__, task); |
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goto out_done; |
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} |
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spin_unlock_irqrestore(&task->task_state_lock, flags); |
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ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); |
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if (!ascb) |
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return -ENOMEM; |
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ascb->uldd_task = &tcs; |
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ascb->completion = &completion; |
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scb = ascb->scb; |
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scb->header.opcode = SCB_ABORT_TASK; |
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switch (task->task_proto) { |
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case SAS_PROTOCOL_SATA: |
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case SAS_PROTOCOL_STP: |
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scb->abort_task.proto_conn_rate = (1 << 5); /* STP */ |
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break; |
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case SAS_PROTOCOL_SSP: |
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scb->abort_task.proto_conn_rate = (1 << 4); /* SSP */ |
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scb->abort_task.proto_conn_rate |= task->dev->linkrate; |
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break; |
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case SAS_PROTOCOL_SMP: |
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break; |
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default: |
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break; |
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} |
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if (task->task_proto == SAS_PROTOCOL_SSP) { |
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scb->abort_task.ssp_frame.frame_type = SSP_TASK; |
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memcpy(scb->abort_task.ssp_frame.hashed_dest_addr, |
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task->dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE); |
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memcpy(scb->abort_task.ssp_frame.hashed_src_addr, |
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task->dev->port->ha->hashed_sas_addr, |
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HASHED_SAS_ADDR_SIZE); |
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scb->abort_task.ssp_frame.tptt = cpu_to_be16(0xFFFF); |
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|
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memcpy(scb->abort_task.ssp_task.lun, task->ssp_task.LUN, 8); |
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scb->abort_task.ssp_task.tmf = TMF_ABORT_TASK; |
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scb->abort_task.ssp_task.tag = cpu_to_be16(0xFFFF); |
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} |
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scb->abort_task.sister_scb = cpu_to_le16(0xFFFF); |
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scb->abort_task.conn_handle = cpu_to_le16( |
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(u16)(unsigned long)task->dev->lldd_dev); |
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scb->abort_task.retry_count = 1; |
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scb->abort_task.index = cpu_to_le16((u16)tascb->tc_index); |
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scb->abort_task.itnl_to = cpu_to_le16(ITNL_TIMEOUT_CONST); |
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res = asd_enqueue_internal(ascb, asd_tmf_tasklet_complete, |
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asd_tmf_timedout); |
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if (res) |
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goto out_free; |
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wait_for_completion(&completion); |
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ASD_DPRINTK("tmf came back\n"); |
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tascb->tag = tcs.tag; |
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tascb->tag_valid = tcs.tag_valid; |
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spin_lock_irqsave(&task->task_state_lock, flags); |
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if (task->task_state_flags & SAS_TASK_STATE_DONE) { |
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spin_unlock_irqrestore(&task->task_state_lock, flags); |
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res = TMF_RESP_FUNC_COMPLETE; |
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ASD_DPRINTK("%s: task 0x%p done\n", __func__, task); |
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goto out_done; |
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} |
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spin_unlock_irqrestore(&task->task_state_lock, flags); |
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if (tcs.dl_opcode == TC_SSP_RESP) { |
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/* The task to be aborted has been sent to the device. |
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* We got a Response IU for the ABORT TASK TMF. */ |
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if (tcs.tmf_state == TMF_RESP_FUNC_COMPLETE) |
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res = asd_clear_nexus(task); |
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else |
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res = tcs.tmf_state; |
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} else if (tcs.dl_opcode == TC_NO_ERROR && |
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tcs.tmf_state == TMF_RESP_FUNC_FAILED) { |
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/* timeout */ |
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res = TMF_RESP_FUNC_FAILED; |
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} else { |
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/* In the following we assume that the managing layer |
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* will _never_ make a mistake, when issuing ABORT |
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* TASK. |
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*/ |
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switch (tcs.dl_opcode) { |
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default: |
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res = asd_clear_nexus(task); |
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fallthrough; |
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case TC_NO_ERROR: |
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break; |
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/* The task hasn't been sent to the device xor |
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* we never got a (sane) Response IU for the |
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* ABORT TASK TMF. |
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*/ |
|
case TF_NAK_RECV: |
|
res = TMF_RESP_INVALID_FRAME; |
|
break; |
|
case TF_TMF_TASK_DONE: /* done but not reported yet */ |
|
res = TMF_RESP_FUNC_FAILED; |
|
leftover = |
|
wait_for_completion_timeout(&tascb_completion, |
|
AIC94XX_SCB_TIMEOUT); |
|
spin_lock_irqsave(&task->task_state_lock, flags); |
|
if (leftover < 1) |
|
res = TMF_RESP_FUNC_FAILED; |
|
if (task->task_state_flags & SAS_TASK_STATE_DONE) |
|
res = TMF_RESP_FUNC_COMPLETE; |
|
spin_unlock_irqrestore(&task->task_state_lock, flags); |
|
break; |
|
case TF_TMF_NO_TAG: |
|
case TF_TMF_TAG_FREE: /* the tag is in the free list */ |
|
case TF_TMF_NO_CONN_HANDLE: /* no such device */ |
|
res = TMF_RESP_FUNC_COMPLETE; |
|
break; |
|
case TF_TMF_NO_CTX: /* not in seq, or proto != SSP */ |
|
res = TMF_RESP_FUNC_ESUPP; |
|
break; |
|
} |
|
} |
|
out_done: |
|
tascb->completion = NULL; |
|
if (res == TMF_RESP_FUNC_COMPLETE) { |
|
task->lldd_task = NULL; |
|
mb(); |
|
asd_ascb_free(tascb); |
|
} |
|
ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task, res); |
|
return res; |
|
|
|
out_free: |
|
asd_ascb_free(ascb); |
|
ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task, res); |
|
return res; |
|
} |
|
|
|
/** |
|
* asd_initiate_ssp_tmf -- send a TMF to an I_T_L or I_T_L_Q nexus |
|
* @dev: pointer to struct domain_device of interest |
|
* @lun: pointer to u8[8] which is the LUN |
|
* @tmf: the TMF to be performed (see sas_task.h or the SAS spec) |
|
* @index: the transaction context of the task to be queried if QT TMF |
|
* |
|
* This function is used to send ABORT TASK SET, CLEAR ACA, |
|
* CLEAR TASK SET, LU RESET and QUERY TASK TMFs. |
|
* |
|
* No SCBs should be queued to the I_T_L nexus when this SCB is |
|
* pending. |
|
* |
|
* Returns: TMF response code (see sas_task.h or the SAS spec) |
|
*/ |
|
static int asd_initiate_ssp_tmf(struct domain_device *dev, u8 *lun, |
|
int tmf, int index) |
|
{ |
|
struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha; |
|
struct asd_ascb *ascb; |
|
int res = 1; |
|
struct scb *scb; |
|
DECLARE_COMPLETION_ONSTACK(completion); |
|
DECLARE_TCS(tcs); |
|
|
|
if (!(dev->tproto & SAS_PROTOCOL_SSP)) |
|
return TMF_RESP_FUNC_ESUPP; |
|
|
|
ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); |
|
if (!ascb) |
|
return -ENOMEM; |
|
|
|
ascb->completion = &completion; |
|
ascb->uldd_task = &tcs; |
|
scb = ascb->scb; |
|
|
|
if (tmf == TMF_QUERY_TASK) |
|
scb->header.opcode = QUERY_SSP_TASK; |
|
else |
|
scb->header.opcode = INITIATE_SSP_TMF; |
|
|
|
scb->ssp_tmf.proto_conn_rate = (1 << 4); /* SSP */ |
|
scb->ssp_tmf.proto_conn_rate |= dev->linkrate; |
|
/* SSP frame header */ |
|
scb->ssp_tmf.ssp_frame.frame_type = SSP_TASK; |
|
memcpy(scb->ssp_tmf.ssp_frame.hashed_dest_addr, |
|
dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE); |
|
memcpy(scb->ssp_tmf.ssp_frame.hashed_src_addr, |
|
dev->port->ha->hashed_sas_addr, HASHED_SAS_ADDR_SIZE); |
|
scb->ssp_tmf.ssp_frame.tptt = cpu_to_be16(0xFFFF); |
|
/* SSP Task IU */ |
|
memcpy(scb->ssp_tmf.ssp_task.lun, lun, 8); |
|
scb->ssp_tmf.ssp_task.tmf = tmf; |
|
|
|
scb->ssp_tmf.sister_scb = cpu_to_le16(0xFFFF); |
|
scb->ssp_tmf.conn_handle= cpu_to_le16((u16)(unsigned long) |
|
dev->lldd_dev); |
|
scb->ssp_tmf.retry_count = 1; |
|
scb->ssp_tmf.itnl_to = cpu_to_le16(ITNL_TIMEOUT_CONST); |
|
if (tmf == TMF_QUERY_TASK) |
|
scb->ssp_tmf.index = cpu_to_le16(index); |
|
|
|
res = asd_enqueue_internal(ascb, asd_tmf_tasklet_complete, |
|
asd_tmf_timedout); |
|
if (res) |
|
goto out_err; |
|
wait_for_completion(&completion); |
|
|
|
switch (tcs.dl_opcode) { |
|
case TC_NO_ERROR: |
|
res = TMF_RESP_FUNC_COMPLETE; |
|
break; |
|
case TF_NAK_RECV: |
|
res = TMF_RESP_INVALID_FRAME; |
|
break; |
|
case TF_TMF_TASK_DONE: |
|
res = TMF_RESP_FUNC_FAILED; |
|
break; |
|
case TF_TMF_NO_TAG: |
|
case TF_TMF_TAG_FREE: /* the tag is in the free list */ |
|
case TF_TMF_NO_CONN_HANDLE: /* no such device */ |
|
res = TMF_RESP_FUNC_COMPLETE; |
|
break; |
|
case TF_TMF_NO_CTX: /* not in seq, or proto != SSP */ |
|
res = TMF_RESP_FUNC_ESUPP; |
|
break; |
|
default: |
|
/* Allow TMF response codes to propagate upwards */ |
|
res = tcs.dl_opcode; |
|
break; |
|
} |
|
return res; |
|
out_err: |
|
asd_ascb_free(ascb); |
|
return res; |
|
} |
|
|
|
int asd_abort_task_set(struct domain_device *dev, u8 *lun) |
|
{ |
|
int res = asd_initiate_ssp_tmf(dev, lun, TMF_ABORT_TASK_SET, 0); |
|
|
|
if (res == TMF_RESP_FUNC_COMPLETE) |
|
asd_clear_nexus_I_T_L(dev, lun); |
|
return res; |
|
} |
|
|
|
int asd_clear_aca(struct domain_device *dev, u8 *lun) |
|
{ |
|
int res = asd_initiate_ssp_tmf(dev, lun, TMF_CLEAR_ACA, 0); |
|
|
|
if (res == TMF_RESP_FUNC_COMPLETE) |
|
asd_clear_nexus_I_T_L(dev, lun); |
|
return res; |
|
} |
|
|
|
int asd_clear_task_set(struct domain_device *dev, u8 *lun) |
|
{ |
|
int res = asd_initiate_ssp_tmf(dev, lun, TMF_CLEAR_TASK_SET, 0); |
|
|
|
if (res == TMF_RESP_FUNC_COMPLETE) |
|
asd_clear_nexus_I_T_L(dev, lun); |
|
return res; |
|
} |
|
|
|
int asd_lu_reset(struct domain_device *dev, u8 *lun) |
|
{ |
|
int res = asd_initiate_ssp_tmf(dev, lun, TMF_LU_RESET, 0); |
|
|
|
if (res == TMF_RESP_FUNC_COMPLETE) |
|
asd_clear_nexus_I_T_L(dev, lun); |
|
return res; |
|
} |
|
|
|
/** |
|
* asd_query_task -- send a QUERY TASK TMF to an I_T_L_Q nexus |
|
* @task: pointer to sas_task struct of interest |
|
* |
|
* Returns: TMF_RESP_FUNC_COMPLETE if the task is not in the task set, |
|
* or TMF_RESP_FUNC_SUCC if the task is in the task set. |
|
* |
|
* Normally the management layer sets the task to aborted state, |
|
* and then calls query task and then abort task. |
|
*/ |
|
int asd_query_task(struct sas_task *task) |
|
{ |
|
struct asd_ascb *ascb = task->lldd_task; |
|
int index; |
|
|
|
if (ascb) { |
|
index = ascb->tc_index; |
|
return asd_initiate_ssp_tmf(task->dev, task->ssp_task.LUN, |
|
TMF_QUERY_TASK, index); |
|
} |
|
return TMF_RESP_FUNC_COMPLETE; |
|
}
|
|
|