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Jing HuangJames Bottomley
Jing Huang
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James Bottomley
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[SCSI] bfa: Brocade BFA FC SCSI driver
Add new driver for Brocade Hardware Signed-off-by: Jing Huang <huangj@brocade.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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‎MAINTAINERS‎

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@@ -1211,6 +1211,13 @@ L: netdev@vger.kernel.org
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S: Supported
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F: drivers/net/tg3.*
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BROCADE BFA FC SCSI DRIVER
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P: Jing Huang
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M: huangj@brocade.com
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L: linux-scsi@vger.kernel.org
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S: Supported
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F: drivers/scsi/bfa/
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BSG (block layer generic sg v4 driver)
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M: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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L: linux-scsi@vger.kernel.org

‎drivers/scsi/Kconfig‎

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@@ -1827,6 +1827,16 @@ config SCSI_SRP
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To compile this driver as a module, choose M here: the
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module will be called libsrp.
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config SCSI_BFA_FC
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tristate "Brocade BFA Fibre Channel Support"
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depends on PCI && SCSI
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select SCSI_FC_ATTRS
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help
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This bfa driver supports all Brocade PCIe FC/FCOE host adapters.
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To compile this driver as a module, choose M here. The module will
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be called bfa.
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endif # SCSI_LOWLEVEL
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source "drivers/scsi/pcmcia/Kconfig"

‎drivers/scsi/Makefile‎

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@@ -86,6 +86,7 @@ obj-$(CONFIG_SCSI_QLOGIC_1280) += qla1280.o
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obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx/
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obj-$(CONFIG_SCSI_QLA_ISCSI) += qla4xxx/
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obj-$(CONFIG_SCSI_LPFC) += lpfc/
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obj-$(CONFIG_SCSI_BFA_FC) += bfa/
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obj-$(CONFIG_SCSI_PAS16) += pas16.o
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obj-$(CONFIG_SCSI_T128) += t128.o
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obj-$(CONFIG_SCSI_DMX3191D) += dmx3191d.o

‎drivers/scsi/bfa/Makefile‎

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obj-$(CONFIG_SCSI_BFA_FC) := bfa.o
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bfa-y := bfad.o bfad_intr.o bfad_os.o bfad_im.o bfad_attr.o bfad_fwimg.o
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bfa-y += bfa_core.o bfa_ioc.o bfa_iocfc.o bfa_fcxp.o bfa_lps.o
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bfa-y += bfa_hw_cb.o bfa_hw_ct.o bfa_intr.o bfa_timer.o bfa_rport.o
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bfa-y += bfa_fcport.o bfa_port.o bfa_uf.o bfa_sgpg.o bfa_module.o bfa_ioim.o
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bfa-y += bfa_itnim.o bfa_fcpim.o bfa_tskim.o bfa_log.o bfa_log_module.o
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bfa-y += bfa_csdebug.o bfa_sm.o plog.o
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bfa-y += fcbuild.o fabric.o fcpim.o vfapi.o fcptm.o bfa_fcs.o bfa_fcs_port.o
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bfa-y += bfa_fcs_uf.o bfa_fcs_lport.o fab.o fdmi.o ms.o ns.o scn.o loop.o
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bfa-y += lport_api.o n2n.o rport.o rport_api.o rport_ftrs.o vport.o
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ccflags-y := -I$(obj) -I$(obj)/include -I$(obj)/include/cna

‎drivers/scsi/bfa/bfa_callback_priv.h‎

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/*
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* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
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* All rights reserved
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* www.brocade.com
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*
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* Linux driver for Brocade Fibre Channel Host Bus Adapter.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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#ifndef __BFA_CALLBACK_PRIV_H__
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#define __BFA_CALLBACK_PRIV_H__
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#include <cs/bfa_q.h>
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typedef void (*bfa_cb_cbfn_t) (void *cbarg, bfa_boolean_t complete);
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/**
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* Generic BFA callback element.
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*/
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struct bfa_cb_qe_s {
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struct list_head qe;
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bfa_cb_cbfn_t cbfn;
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bfa_boolean_t once;
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u32 rsvd;
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void *cbarg;
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};
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#define bfa_cb_queue(__bfa, __hcb_qe, __cbfn, __cbarg) do { \
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(__hcb_qe)->cbfn = (__cbfn); \
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(__hcb_qe)->cbarg = (__cbarg); \
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list_add_tail(&(__hcb_qe)->qe, &(__bfa)->comp_q); \
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} while (0)
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#define bfa_cb_dequeue(__hcb_qe) list_del(&(__hcb_qe)->qe)
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#define bfa_cb_queue_once(__bfa, __hcb_qe, __cbfn, __cbarg) do { \
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(__hcb_qe)->cbfn = (__cbfn); \
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(__hcb_qe)->cbarg = (__cbarg); \
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if (!(__hcb_qe)->once) { \
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list_add_tail((__hcb_qe), &(__bfa)->comp_q); \
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(__hcb_qe)->once = BFA_TRUE; \
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} \
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} while (0)
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#define bfa_cb_queue_done(__hcb_qe) do { \
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(__hcb_qe)->once = BFA_FALSE; \
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} while (0)
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#endif /* __BFA_CALLBACK_PRIV_H__ */

‎drivers/scsi/bfa/bfa_cb_ioim_macros.h‎

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/*
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* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
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* All rights reserved
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* www.brocade.com
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*
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* Linux driver for Brocade Fibre Channel Host Bus Adapter.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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/**
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* bfa_cb_ioim_macros.h BFA IOIM driver interface macros.
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*/
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#ifndef __BFA_HCB_IOIM_MACROS_H__
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#define __BFA_HCB_IOIM_MACROS_H__
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#include <bfa_os_inc.h>
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/*
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* #include <linux/dma-mapping.h>
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*
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* #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include
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* <scsi/scsi_device.h> #include <scsi/scsi_host.h>
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*/
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#include "bfad_im_compat.h"
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/*
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* task attribute values in FCP-2 FCP_CMND IU
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*/
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#define SIMPLE_Q 0
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#define HEAD_OF_Q 1
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#define ORDERED_Q 2
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#define ACA_Q 4
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#define UNTAGGED 5
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static inline lun_t
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bfad_int_to_lun(u32 luno)
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{
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union {
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u16 scsi_lun[4];
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lun_t bfa_lun;
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} lun;
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lun.bfa_lun = 0;
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lun.scsi_lun[0] = bfa_os_htons(luno);
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return (lun.bfa_lun);
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}
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/**
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* Get LUN for the I/O request
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*/
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#define bfa_cb_ioim_get_lun(__dio) \
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bfad_int_to_lun(((struct scsi_cmnd *)__dio)->device->lun)
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/**
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* Get CDB for the I/O request
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*/
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static inline u8 *
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bfa_cb_ioim_get_cdb(struct bfad_ioim_s *dio)
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{
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
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return ((u8 *) cmnd->cmnd);
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}
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/**
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* Get I/O direction (read/write) for the I/O request
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*/
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static inline enum fcp_iodir
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bfa_cb_ioim_get_iodir(struct bfad_ioim_s *dio)
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{
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
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enum dma_data_direction dmadir;
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dmadir = cmnd->sc_data_direction;
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if (dmadir == DMA_TO_DEVICE)
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return FCP_IODIR_WRITE;
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else if (dmadir == DMA_FROM_DEVICE)
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return FCP_IODIR_READ;
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else
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return FCP_IODIR_NONE;
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}
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/**
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* Get IO size in bytes for the I/O request
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*/
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static inline u32
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bfa_cb_ioim_get_size(struct bfad_ioim_s *dio)
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{
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
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return (scsi_bufflen(cmnd));
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}
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/**
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* Get timeout for the I/O request
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*/
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static inline u8
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bfa_cb_ioim_get_timeout(struct bfad_ioim_s *dio)
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{
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
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/*
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* TBD: need a timeout for scsi passthru
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*/
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if (cmnd->device->host == NULL)
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return 4;
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return 0;
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}
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/**
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* Get SG element for the I/O request given the SG element index
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*/
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static inline union bfi_addr_u
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bfa_cb_ioim_get_sgaddr(struct bfad_ioim_s *dio, int sgeid)
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{
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
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struct scatterlist *sge;
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u64 addr;
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sge = (struct scatterlist *)scsi_sglist(cmnd) + sgeid;
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addr = (u64) sg_dma_address(sge);
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return (*(union bfi_addr_u *) &addr);
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}
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static inline u32
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bfa_cb_ioim_get_sglen(struct bfad_ioim_s *dio, int sgeid)
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{
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
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struct scatterlist *sge;
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u32 len;
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sge = (struct scatterlist *)scsi_sglist(cmnd) + sgeid;
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len = sg_dma_len(sge);
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return len;
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}
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/**
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* Get Command Reference Number for the I/O request. 0 if none.
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*/
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static inline u8
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bfa_cb_ioim_get_crn(struct bfad_ioim_s *dio)
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{
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return 0;
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}
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/**
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* Get SAM-3 priority for the I/O request. 0 is default.
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*/
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static inline u8
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bfa_cb_ioim_get_priority(struct bfad_ioim_s *dio)
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{
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return 0;
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}
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/**
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* Get task attributes for the I/O request. Default is FCP_TASK_ATTR_SIMPLE(0).
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*/
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static inline u8
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bfa_cb_ioim_get_taskattr(struct bfad_ioim_s *dio)
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{
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
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u8 task_attr = UNTAGGED;
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if (cmnd->device->tagged_supported) {
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switch (cmnd->tag) {
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case HEAD_OF_QUEUE_TAG:
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task_attr = HEAD_OF_Q;
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break;
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case ORDERED_QUEUE_TAG:
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task_attr = ORDERED_Q;
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break;
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default:
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task_attr = SIMPLE_Q;
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break;
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}
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}
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return task_attr;
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}
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/**
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* Get CDB length in bytes for the I/O request. Default is FCP_CMND_CDB_LEN(16).
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*/
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static inline u8
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bfa_cb_ioim_get_cdblen(struct bfad_ioim_s *dio)
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{
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struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
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return (cmnd->cmd_len);
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}
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#endif /* __BFA_HCB_IOIM_MACROS_H__ */

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