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79855d1785
The task_collector mode (or "latency_injector", (C) Dan Willians) is an optional I/O path in libsas that queues up scsi commands instead of directly sending it to the hardware. It generall increases latencies to in the optiomal case slightly reduce mmio traffic to the hardware. Only the obsolete aic94xx driver and the mvsas driver allowed to use it without recompiling the kernel, and most drivers didn't support it at all. Remove the giant blob of code to allow better optimizations for scsi-mq in the future. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Dan Williams <dan.j.williams@intel.com>
102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
/*
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* Aic94xx SAS/SATA driver header file.
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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 <luben_tuikov@adaptec.com>
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*
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* This file is licensed under GPLv2.
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*
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* This file is part of the aic94xx driver.
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*
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* The aic94xx driver is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of the
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* License.
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*
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* The aic94xx driver is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the aic94xx driver; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* $Id: //depot/aic94xx/aic94xx.h#31 $
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*/
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#ifndef _AIC94XX_H_
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#define _AIC94XX_H_
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#include <linux/slab.h>
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#include <linux/ctype.h>
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#include <scsi/libsas.h>
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#define ASD_DRIVER_NAME "aic94xx"
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#define ASD_DRIVER_DESCRIPTION "Adaptec aic94xx SAS/SATA driver"
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#define asd_printk(fmt, ...) printk(KERN_NOTICE ASD_DRIVER_NAME ": " fmt, ## __VA_ARGS__)
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#ifdef ASD_ENTER_EXIT
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#define ENTER printk(KERN_NOTICE "%s: ENTER %s\n", ASD_DRIVER_NAME, \
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__func__)
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#define EXIT printk(KERN_NOTICE "%s: --EXIT %s\n", ASD_DRIVER_NAME, \
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__func__)
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#else
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#define ENTER
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#define EXIT
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#endif
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#ifdef ASD_DEBUG
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#define ASD_DPRINTK asd_printk
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#else
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#define ASD_DPRINTK(fmt, ...)
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#endif
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/* 2*ITNL timeout + 1 second */
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#define AIC94XX_SCB_TIMEOUT (5*HZ)
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extern struct kmem_cache *asd_dma_token_cache;
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extern struct kmem_cache *asd_ascb_cache;
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static inline void asd_stringify_sas_addr(char *p, const u8 *sas_addr)
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{
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int i;
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for (i = 0; i < SAS_ADDR_SIZE; i++, p += 2)
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snprintf(p, 3, "%02X", sas_addr[i]);
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*p = '\0';
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}
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struct asd_ha_struct;
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struct asd_ascb;
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int asd_read_ocm(struct asd_ha_struct *asd_ha);
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int asd_read_flash(struct asd_ha_struct *asd_ha);
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int asd_dev_found(struct domain_device *dev);
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void asd_dev_gone(struct domain_device *dev);
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void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id);
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int asd_execute_task(struct sas_task *task, gfp_t gfp_flags);
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void asd_set_dmamode(struct domain_device *dev);
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/* ---------- TMFs ---------- */
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int asd_abort_task(struct sas_task *);
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int asd_abort_task_set(struct domain_device *, u8 *lun);
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int asd_clear_aca(struct domain_device *, u8 *lun);
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int asd_clear_task_set(struct domain_device *, u8 *lun);
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int asd_lu_reset(struct domain_device *, u8 *lun);
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int asd_I_T_nexus_reset(struct domain_device *dev);
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int asd_query_task(struct sas_task *);
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/* ---------- Adapter and Port management ---------- */
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int asd_clear_nexus_port(struct asd_sas_port *port);
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int asd_clear_nexus_ha(struct sas_ha_struct *sas_ha);
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/* ---------- Phy Management ---------- */
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int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg);
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#endif
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