Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] mpt2sas: fix driver version inconsistency [SCSI] 3w-xxxx: scsi_dma_unmap fix [SCSI] 3w-9xxx: scsi_dma_unmap fix [SCSI] ses: fix problems caused by empty SES provided name [SCSI] fc-transport: Close state transition-window during rport deletion. [SCSI] initialize max_target_blocked in scsi_alloc_target [SCSI] fnic: Add new Cisco PCI-Express FCoE HBA
This commit is contained in:
commit
4a5daceca1
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@ -1431,6 +1431,14 @@ P: Russell King
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|||
M: linux@arm.linux.org.uk
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F: include/linux/clk.h
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CISCO FCOE HBA DRIVER
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P: Abhijeet Joglekar
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M: abjoglek@cisco.com
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P: Joe Eykholt
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M: jeykholt@cisco.com
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L: linux-scsi@vger.kernel.org
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S: Supported
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CODA FILE SYSTEM
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P: Jan Harkes
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M: jaharkes@cs.cmu.edu
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|
|
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@ -119,7 +119,7 @@ enclosure_register(struct device *dev, const char *name, int components,
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edev->edev.class = &enclosure_class;
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edev->edev.parent = get_device(dev);
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edev->cb = cb;
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dev_set_name(&edev->edev, name);
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dev_set_name(&edev->edev, "%s", name);
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err = device_register(&edev->edev);
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if (err)
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goto err;
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@ -255,8 +255,8 @@ enclosure_component_register(struct enclosure_device *edev,
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ecomp->number = number;
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cdev = &ecomp->cdev;
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cdev->parent = get_device(&edev->edev);
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if (name)
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dev_set_name(cdev, name);
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if (name && name[0])
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dev_set_name(cdev, "%s", name);
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else
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dev_set_name(cdev, "%u", number);
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@ -1978,7 +1978,8 @@ static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id)
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{
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struct scsi_cmnd *cmd = tw_dev->srb[request_id];
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scsi_dma_unmap(cmd);
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if (cmd->SCp.phase == TW_PHASE_SGLIST)
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scsi_dma_unmap(cmd);
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} /* End twa_unmap_scsi_data() */
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/* scsi_host_template initializer */
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|
|
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@ -6,7 +6,7 @@
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Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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Brad Strand <linux@3ware.com>
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Copyright (C) 1999-2007 3ware Inc.
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Copyright (C) 1999-2009 3ware Inc.
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Kernel compatiblity By: Andre Hedrick <andre@suse.com>
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Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com>
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@ -1294,7 +1294,8 @@ static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
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{
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dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n");
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scsi_dma_unmap(cmd);
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if (cmd->SCp.phase == TW_PHASE_SGLIST)
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scsi_dma_unmap(cmd);
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} /* End tw_unmap_scsi_data() */
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/* This function will reset a device extension */
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|
|
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@ -6,7 +6,7 @@
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|||
Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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Brad Strand <linux@3ware.com>
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Copyright (C) 1999-2007 3ware Inc.
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Copyright (C) 1999-2009 3ware Inc.
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Kernel compatiblity By: Andre Hedrick <andre@suse.com>
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Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com>
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|
|
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@ -628,6 +628,17 @@ config FCOE
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---help---
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Fibre Channel over Ethernet module
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config FCOE_FNIC
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tristate "Cisco FNIC Driver"
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depends on PCI && X86
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select LIBFC
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help
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This is support for the Cisco PCI-Express FCoE HBA.
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To compile this driver as a module, choose M here and read
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<file:Documentation/scsi/scsi.txt>.
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The module will be called fnic.
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config SCSI_DMX3191D
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tristate "DMX3191D SCSI support"
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depends on PCI && SCSI
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|
|
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@ -39,6 +39,7 @@ obj-$(CONFIG_SCSI_DH) += device_handler/
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obj-$(CONFIG_LIBFC) += libfc/
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obj-$(CONFIG_LIBFCOE) += fcoe/
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obj-$(CONFIG_FCOE) += fcoe/
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obj-$(CONFIG_FCOE_FNIC) += fnic/
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obj-$(CONFIG_ISCSI_TCP) += libiscsi.o libiscsi_tcp.o iscsi_tcp.o
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obj-$(CONFIG_INFINIBAND_ISER) += libiscsi.o
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obj-$(CONFIG_SCSI_A4000T) += 53c700.o a4000t.o
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|
|
15
drivers/scsi/fnic/Makefile
Normal file
15
drivers/scsi/fnic/Makefile
Normal file
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@ -0,0 +1,15 @@
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obj-$(CONFIG_FCOE_FNIC) += fnic.o
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fnic-y := \
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fnic_attrs.o \
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fnic_isr.o \
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fnic_main.o \
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fnic_res.o \
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fnic_fcs.o \
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fnic_scsi.o \
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vnic_cq.o \
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vnic_dev.o \
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vnic_intr.o \
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vnic_rq.o \
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vnic_wq_copy.o \
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vnic_wq.o
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78
drivers/scsi/fnic/cq_desc.h
Normal file
78
drivers/scsi/fnic/cq_desc.h
Normal file
|
@ -0,0 +1,78 @@
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/*
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* Copyright 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _CQ_DESC_H_
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#define _CQ_DESC_H_
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/*
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* Completion queue descriptor types
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*/
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enum cq_desc_types {
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CQ_DESC_TYPE_WQ_ENET = 0,
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CQ_DESC_TYPE_DESC_COPY = 1,
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CQ_DESC_TYPE_WQ_EXCH = 2,
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CQ_DESC_TYPE_RQ_ENET = 3,
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CQ_DESC_TYPE_RQ_FCP = 4,
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};
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/* Completion queue descriptor: 16B
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*
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* All completion queues have this basic layout. The
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* type_specfic area is unique for each completion
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* queue type.
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*/
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struct cq_desc {
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__le16 completed_index;
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__le16 q_number;
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u8 type_specfic[11];
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u8 type_color;
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};
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#define CQ_DESC_TYPE_BITS 4
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#define CQ_DESC_TYPE_MASK ((1 << CQ_DESC_TYPE_BITS) - 1)
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#define CQ_DESC_COLOR_MASK 1
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#define CQ_DESC_COLOR_SHIFT 7
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#define CQ_DESC_Q_NUM_BITS 10
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#define CQ_DESC_Q_NUM_MASK ((1 << CQ_DESC_Q_NUM_BITS) - 1)
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#define CQ_DESC_COMP_NDX_BITS 12
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#define CQ_DESC_COMP_NDX_MASK ((1 << CQ_DESC_COMP_NDX_BITS) - 1)
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static inline void cq_desc_dec(const struct cq_desc *desc_arg,
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u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
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{
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const struct cq_desc *desc = desc_arg;
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const u8 type_color = desc->type_color;
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*color = (type_color >> CQ_DESC_COLOR_SHIFT) & CQ_DESC_COLOR_MASK;
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/*
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* Make sure color bit is read from desc *before* other fields
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* are read from desc. Hardware guarantees color bit is last
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* bit (byte) written. Adding the rmb() prevents the compiler
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||||
* and/or CPU from reordering the reads which would potentially
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* result in reading stale values.
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*/
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rmb();
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*type = type_color & CQ_DESC_TYPE_MASK;
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*q_number = le16_to_cpu(desc->q_number) & CQ_DESC_Q_NUM_MASK;
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*completed_index = le16_to_cpu(desc->completed_index) &
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CQ_DESC_COMP_NDX_MASK;
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}
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#endif /* _CQ_DESC_H_ */
|
167
drivers/scsi/fnic/cq_enet_desc.h
Normal file
167
drivers/scsi/fnic/cq_enet_desc.h
Normal file
|
@ -0,0 +1,167 @@
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|||
/*
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||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
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#ifndef _CQ_ENET_DESC_H_
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#define _CQ_ENET_DESC_H_
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#include "cq_desc.h"
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/* Ethernet completion queue descriptor: 16B */
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struct cq_enet_wq_desc {
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__le16 completed_index;
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__le16 q_number;
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u8 reserved[11];
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u8 type_color;
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};
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static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
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u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
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{
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cq_desc_dec((struct cq_desc *)desc, type,
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color, q_number, completed_index);
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}
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/* Completion queue descriptor: Ethernet receive queue, 16B */
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struct cq_enet_rq_desc {
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__le16 completed_index_flags;
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__le16 q_number_rss_type_flags;
|
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__le32 rss_hash;
|
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__le16 bytes_written_flags;
|
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__le16 vlan;
|
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__le16 checksum_fcoe;
|
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u8 flags;
|
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u8 type_color;
|
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};
|
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|
||||
#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12)
|
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#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13)
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#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14)
|
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#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15)
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|
||||
#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4
|
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#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
|
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((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
|
||||
#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0
|
||||
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1
|
||||
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2
|
||||
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3
|
||||
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4
|
||||
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5
|
||||
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6
|
||||
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14)
|
||||
|
||||
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14
|
||||
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
|
||||
((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15)
|
||||
|
||||
#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 4
|
||||
#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
|
||||
((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
|
||||
#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8
|
||||
#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
|
||||
((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
|
||||
#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8
|
||||
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0)
|
||||
#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1)
|
||||
#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6)
|
||||
#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7)
|
||||
|
||||
static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
|
||||
u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
|
||||
u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
|
||||
u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
|
||||
u8 *vlan_stripped, u16 *vlan, u16 *checksum, u8 *fcoe_sof,
|
||||
u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
|
||||
u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
|
||||
u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
|
||||
{
|
||||
u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags);
|
||||
u16 q_number_rss_type_flags =
|
||||
le16_to_cpu(desc->q_number_rss_type_flags);
|
||||
u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
|
||||
|
||||
cq_desc_dec((struct cq_desc *)desc, type,
|
||||
color, q_number, completed_index);
|
||||
|
||||
*ingress_port = (completed_index_flags &
|
||||
CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
|
||||
*fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
|
||||
1 : 0;
|
||||
*eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
|
||||
1 : 0;
|
||||
*sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
|
||||
1 : 0;
|
||||
|
||||
*rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
|
||||
CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
|
||||
*csum_not_calc = (q_number_rss_type_flags &
|
||||
CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
|
||||
|
||||
*rss_hash = le32_to_cpu(desc->rss_hash);
|
||||
|
||||
*bytes_written = bytes_written_flags &
|
||||
CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
|
||||
*packet_error = (bytes_written_flags &
|
||||
CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
|
||||
*vlan_stripped = (bytes_written_flags &
|
||||
CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
|
||||
|
||||
*vlan = le16_to_cpu(desc->vlan);
|
||||
|
||||
if (*fcoe) {
|
||||
*fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
|
||||
CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
|
||||
*fcoe_fc_crc_ok = (desc->flags &
|
||||
CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
|
||||
*fcoe_enc_error = (desc->flags &
|
||||
CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
|
||||
*fcoe_eof = (u8)((desc->checksum_fcoe >>
|
||||
CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
|
||||
CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
|
||||
*checksum = 0;
|
||||
} else {
|
||||
*fcoe_sof = 0;
|
||||
*fcoe_fc_crc_ok = 0;
|
||||
*fcoe_enc_error = 0;
|
||||
*fcoe_eof = 0;
|
||||
*checksum = le16_to_cpu(desc->checksum_fcoe);
|
||||
}
|
||||
|
||||
*tcp_udp_csum_ok =
|
||||
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
|
||||
*udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
|
||||
*tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
|
||||
*ipv4_csum_ok =
|
||||
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
|
||||
*ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
|
||||
*ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
|
||||
*ipv4_fragment =
|
||||
(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
|
||||
*fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
|
||||
}
|
||||
|
||||
#endif /* _CQ_ENET_DESC_H_ */
|
182
drivers/scsi/fnic/cq_exch_desc.h
Normal file
182
drivers/scsi/fnic/cq_exch_desc.h
Normal file
|
@ -0,0 +1,182 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _CQ_EXCH_DESC_H_
|
||||
#define _CQ_EXCH_DESC_H_
|
||||
|
||||
#include "cq_desc.h"
|
||||
|
||||
/* Exchange completion queue descriptor: 16B */
|
||||
struct cq_exch_wq_desc {
|
||||
u16 completed_index;
|
||||
u16 q_number;
|
||||
u16 exchange_id;
|
||||
u8 tmpl;
|
||||
u8 reserved0;
|
||||
u32 reserved1;
|
||||
u8 exch_status;
|
||||
u8 reserved2[2];
|
||||
u8 type_color;
|
||||
};
|
||||
|
||||
#define CQ_EXCH_WQ_STATUS_BITS 2
|
||||
#define CQ_EXCH_WQ_STATUS_MASK ((1 << CQ_EXCH_WQ_STATUS_BITS) - 1)
|
||||
|
||||
enum cq_exch_status_types {
|
||||
CQ_EXCH_WQ_STATUS_TYPE_COMPLETE = 0,
|
||||
CQ_EXCH_WQ_STATUS_TYPE_ABORT = 1,
|
||||
CQ_EXCH_WQ_STATUS_TYPE_SGL_EOF = 2,
|
||||
CQ_EXCH_WQ_STATUS_TYPE_TMPL_ERR = 3,
|
||||
};
|
||||
|
||||
static inline void cq_exch_wq_desc_dec(struct cq_exch_wq_desc *desc_ptr,
|
||||
u8 *type,
|
||||
u8 *color,
|
||||
u16 *q_number,
|
||||
u16 *completed_index,
|
||||
u8 *exch_status)
|
||||
{
|
||||
cq_desc_dec((struct cq_desc *)desc_ptr, type,
|
||||
color, q_number, completed_index);
|
||||
*exch_status = desc_ptr->exch_status & CQ_EXCH_WQ_STATUS_MASK;
|
||||
}
|
||||
|
||||
struct cq_fcp_rq_desc {
|
||||
u16 completed_index_eop_sop_prt;
|
||||
u16 q_number;
|
||||
u16 exchange_id;
|
||||
u16 tmpl;
|
||||
u16 bytes_written;
|
||||
u16 vlan;
|
||||
u8 sof;
|
||||
u8 eof;
|
||||
u8 fcs_fer_fck;
|
||||
u8 type_color;
|
||||
};
|
||||
|
||||
#define CQ_FCP_RQ_DESC_FLAGS_SOP (1 << 15)
|
||||
#define CQ_FCP_RQ_DESC_FLAGS_EOP (1 << 14)
|
||||
#define CQ_FCP_RQ_DESC_FLAGS_PRT (1 << 12)
|
||||
#define CQ_FCP_RQ_DESC_TMPL_MASK 0x1f
|
||||
#define CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK 0x3fff
|
||||
#define CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT 14
|
||||
#define CQ_FCP_RQ_DESC_PACKET_ERR_MASK (1 << CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT)
|
||||
#define CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT 15
|
||||
#define CQ_FCP_RQ_DESC_VS_STRIPPED_MASK (1 << CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT)
|
||||
#define CQ_FCP_RQ_DESC_FC_CRC_OK_MASK 0x1
|
||||
#define CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT 1
|
||||
#define CQ_FCP_RQ_DESC_FCOE_ERR_MASK (1 << CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT)
|
||||
#define CQ_FCP_RQ_DESC_FCS_OK_SHIFT 7
|
||||
#define CQ_FCP_RQ_DESC_FCS_OK_MASK (1 << CQ_FCP_RQ_DESC_FCS_OK_SHIFT)
|
||||
|
||||
static inline void cq_fcp_rq_desc_dec(struct cq_fcp_rq_desc *desc_ptr,
|
||||
u8 *type,
|
||||
u8 *color,
|
||||
u16 *q_number,
|
||||
u16 *completed_index,
|
||||
u8 *eop,
|
||||
u8 *sop,
|
||||
u8 *fck,
|
||||
u16 *exchange_id,
|
||||
u16 *tmpl,
|
||||
u32 *bytes_written,
|
||||
u8 *sof,
|
||||
u8 *eof,
|
||||
u8 *ingress_port,
|
||||
u8 *packet_err,
|
||||
u8 *fcoe_err,
|
||||
u8 *fcs_ok,
|
||||
u8 *vlan_stripped,
|
||||
u16 *vlan)
|
||||
{
|
||||
cq_desc_dec((struct cq_desc *)desc_ptr, type,
|
||||
color, q_number, completed_index);
|
||||
*eop = (desc_ptr->completed_index_eop_sop_prt &
|
||||
CQ_FCP_RQ_DESC_FLAGS_EOP) ? 1 : 0;
|
||||
*sop = (desc_ptr->completed_index_eop_sop_prt &
|
||||
CQ_FCP_RQ_DESC_FLAGS_SOP) ? 1 : 0;
|
||||
*ingress_port =
|
||||
(desc_ptr->completed_index_eop_sop_prt &
|
||||
CQ_FCP_RQ_DESC_FLAGS_PRT) ? 1 : 0;
|
||||
*exchange_id = desc_ptr->exchange_id;
|
||||
*tmpl = desc_ptr->tmpl & CQ_FCP_RQ_DESC_TMPL_MASK;
|
||||
*bytes_written =
|
||||
desc_ptr->bytes_written & CQ_FCP_RQ_DESC_BYTES_WRITTEN_MASK;
|
||||
*packet_err =
|
||||
(desc_ptr->bytes_written & CQ_FCP_RQ_DESC_PACKET_ERR_MASK) >>
|
||||
CQ_FCP_RQ_DESC_PACKET_ERR_SHIFT;
|
||||
*vlan_stripped =
|
||||
(desc_ptr->bytes_written & CQ_FCP_RQ_DESC_VS_STRIPPED_MASK) >>
|
||||
CQ_FCP_RQ_DESC_VS_STRIPPED_SHIFT;
|
||||
*vlan = desc_ptr->vlan;
|
||||
*sof = desc_ptr->sof;
|
||||
*fck = desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FC_CRC_OK_MASK;
|
||||
*fcoe_err = (desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCOE_ERR_MASK) >>
|
||||
CQ_FCP_RQ_DESC_FCOE_ERR_SHIFT;
|
||||
*eof = desc_ptr->eof;
|
||||
*fcs_ok =
|
||||
(desc_ptr->fcs_fer_fck & CQ_FCP_RQ_DESC_FCS_OK_MASK) >>
|
||||
CQ_FCP_RQ_DESC_FCS_OK_SHIFT;
|
||||
}
|
||||
|
||||
struct cq_sgl_desc {
|
||||
u16 exchange_id;
|
||||
u16 q_number;
|
||||
u32 active_burst_offset;
|
||||
u32 tot_data_bytes;
|
||||
u16 tmpl;
|
||||
u8 sgl_err;
|
||||
u8 type_color;
|
||||
};
|
||||
|
||||
enum cq_sgl_err_types {
|
||||
CQ_SGL_ERR_NO_ERROR = 0,
|
||||
CQ_SGL_ERR_OVERFLOW, /* data ran beyond end of SGL */
|
||||
CQ_SGL_ERR_SGL_LCL_ADDR_ERR, /* sgl access to local vnic addr illegal*/
|
||||
CQ_SGL_ERR_ADDR_RSP_ERR, /* sgl address error */
|
||||
CQ_SGL_ERR_DATA_RSP_ERR, /* sgl data rsp error */
|
||||
CQ_SGL_ERR_CNT_ZERO_ERR, /* SGL count is 0 */
|
||||
CQ_SGL_ERR_CNT_MAX_ERR, /* SGL count is larger than supported */
|
||||
CQ_SGL_ERR_ORDER_ERR, /* frames recv on both ports, order err */
|
||||
CQ_SGL_ERR_DATA_LCL_ADDR_ERR,/* sgl data buf to local vnic addr ill */
|
||||
CQ_SGL_ERR_HOST_CQ_ERR, /* host cq entry to local vnic addr ill */
|
||||
};
|
||||
|
||||
#define CQ_SGL_SGL_ERR_MASK 0x1f
|
||||
#define CQ_SGL_TMPL_MASK 0x1f
|
||||
|
||||
static inline void cq_sgl_desc_dec(struct cq_sgl_desc *desc_ptr,
|
||||
u8 *type,
|
||||
u8 *color,
|
||||
u16 *q_number,
|
||||
u16 *exchange_id,
|
||||
u32 *active_burst_offset,
|
||||
u32 *tot_data_bytes,
|
||||
u16 *tmpl,
|
||||
u8 *sgl_err)
|
||||
{
|
||||
/* Cheat a little by assuming exchange_id is the same as completed
|
||||
index */
|
||||
cq_desc_dec((struct cq_desc *)desc_ptr, type, color, q_number,
|
||||
exchange_id);
|
||||
*active_burst_offset = desc_ptr->active_burst_offset;
|
||||
*tot_data_bytes = desc_ptr->tot_data_bytes;
|
||||
*tmpl = desc_ptr->tmpl & CQ_SGL_TMPL_MASK;
|
||||
*sgl_err = desc_ptr->sgl_err & CQ_SGL_SGL_ERR_MASK;
|
||||
}
|
||||
|
||||
#endif /* _CQ_EXCH_DESC_H_ */
|
780
drivers/scsi/fnic/fcpio.h
Normal file
780
drivers/scsi/fnic/fcpio.h
Normal file
|
@ -0,0 +1,780 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _FCPIO_H_
|
||||
#define _FCPIO_H_
|
||||
|
||||
#include <linux/if_ether.h>
|
||||
|
||||
/*
|
||||
* This header file includes all of the data structures used for
|
||||
* communication by the host driver to the fcp firmware.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Exchange and sequence id space allocated to the host driver
|
||||
*/
|
||||
#define FCPIO_HOST_EXCH_RANGE_START 0x1000
|
||||
#define FCPIO_HOST_EXCH_RANGE_END 0x1fff
|
||||
#define FCPIO_HOST_SEQ_ID_RANGE_START 0x80
|
||||
#define FCPIO_HOST_SEQ_ID_RANGE_END 0xff
|
||||
|
||||
/*
|
||||
* Command entry type
|
||||
*/
|
||||
enum fcpio_type {
|
||||
/*
|
||||
* Initiator request types
|
||||
*/
|
||||
FCPIO_ICMND_16 = 0x1,
|
||||
FCPIO_ICMND_32,
|
||||
FCPIO_ICMND_CMPL,
|
||||
FCPIO_ITMF,
|
||||
FCPIO_ITMF_CMPL,
|
||||
|
||||
/*
|
||||
* Target request types
|
||||
*/
|
||||
FCPIO_TCMND_16 = 0x11,
|
||||
FCPIO_TCMND_32,
|
||||
FCPIO_TDATA,
|
||||
FCPIO_TXRDY,
|
||||
FCPIO_TRSP,
|
||||
FCPIO_TDRSP_CMPL,
|
||||
FCPIO_TTMF,
|
||||
FCPIO_TTMF_ACK,
|
||||
FCPIO_TABORT,
|
||||
FCPIO_TABORT_CMPL,
|
||||
|
||||
/*
|
||||
* Misc request types
|
||||
*/
|
||||
FCPIO_ACK = 0x20,
|
||||
FCPIO_RESET,
|
||||
FCPIO_RESET_CMPL,
|
||||
FCPIO_FLOGI_REG,
|
||||
FCPIO_FLOGI_REG_CMPL,
|
||||
FCPIO_ECHO,
|
||||
FCPIO_ECHO_CMPL,
|
||||
FCPIO_LUNMAP_CHNG,
|
||||
FCPIO_LUNMAP_REQ,
|
||||
FCPIO_LUNMAP_REQ_CMPL,
|
||||
FCPIO_FLOGI_FIP_REG,
|
||||
FCPIO_FLOGI_FIP_REG_CMPL,
|
||||
};
|
||||
|
||||
/*
|
||||
* Header status codes from the firmware
|
||||
*/
|
||||
enum fcpio_status {
|
||||
FCPIO_SUCCESS = 0, /* request was successful */
|
||||
|
||||
/*
|
||||
* If a request to the firmware is rejected, the original request
|
||||
* header will be returned with the status set to one of the following:
|
||||
*/
|
||||
FCPIO_INVALID_HEADER, /* header contains invalid data */
|
||||
FCPIO_OUT_OF_RESOURCE, /* out of resources to complete request */
|
||||
FCPIO_INVALID_PARAM, /* some parameter in request is invalid */
|
||||
FCPIO_REQ_NOT_SUPPORTED, /* request type is not supported */
|
||||
FCPIO_IO_NOT_FOUND, /* requested I/O was not found */
|
||||
|
||||
/*
|
||||
* Once a request is processed, the firmware will usually return
|
||||
* a cmpl message type. In cases where errors occurred,
|
||||
* the header status field would be filled in with one of the following:
|
||||
*/
|
||||
FCPIO_ABORTED = 0x41, /* request was aborted */
|
||||
FCPIO_TIMEOUT, /* request was timed out */
|
||||
FCPIO_SGL_INVALID, /* request was aborted due to sgl error */
|
||||
FCPIO_MSS_INVALID, /* request was aborted due to mss error */
|
||||
FCPIO_DATA_CNT_MISMATCH, /* recv/sent more/less data than exp. */
|
||||
FCPIO_FW_ERR, /* request was terminated due to fw error */
|
||||
FCPIO_ITMF_REJECTED, /* itmf req was rejected by remote node */
|
||||
FCPIO_ITMF_FAILED, /* itmf req was failed by remote node */
|
||||
FCPIO_ITMF_INCORRECT_LUN, /* itmf req targeted incorrect LUN */
|
||||
FCPIO_CMND_REJECTED, /* request was invalid and rejected */
|
||||
FCPIO_NO_PATH_AVAIL, /* no paths to the lun was available */
|
||||
FCPIO_PATH_FAILED, /* i/o sent to current path failed */
|
||||
FCPIO_LUNMAP_CHNG_PEND, /* i/o rejected due to lunmap change */
|
||||
};
|
||||
|
||||
/*
|
||||
* The header command tag. All host requests will use the "tag" field
|
||||
* to mark commands with a unique tag. When the firmware responds to
|
||||
* a host request, it will copy the tag field into the response.
|
||||
*
|
||||
* The only firmware requests that will use the rx_id/ox_id fields instead
|
||||
* of the tag field will be the target command and target task management
|
||||
* requests. These two requests do not have corresponding host requests
|
||||
* since they come directly from the FC initiator on the network.
|
||||
*/
|
||||
struct fcpio_tag {
|
||||
union {
|
||||
u32 req_id;
|
||||
struct {
|
||||
u16 rx_id;
|
||||
u16 ox_id;
|
||||
} ex_id;
|
||||
} u;
|
||||
};
|
||||
|
||||
static inline void
|
||||
fcpio_tag_id_enc(struct fcpio_tag *tag, u32 id)
|
||||
{
|
||||
tag->u.req_id = id;
|
||||
}
|
||||
|
||||
static inline void
|
||||
fcpio_tag_id_dec(struct fcpio_tag *tag, u32 *id)
|
||||
{
|
||||
*id = tag->u.req_id;
|
||||
}
|
||||
|
||||
static inline void
|
||||
fcpio_tag_exid_enc(struct fcpio_tag *tag, u16 ox_id, u16 rx_id)
|
||||
{
|
||||
tag->u.ex_id.rx_id = rx_id;
|
||||
tag->u.ex_id.ox_id = ox_id;
|
||||
}
|
||||
|
||||
static inline void
|
||||
fcpio_tag_exid_dec(struct fcpio_tag *tag, u16 *ox_id, u16 *rx_id)
|
||||
{
|
||||
*rx_id = tag->u.ex_id.rx_id;
|
||||
*ox_id = tag->u.ex_id.ox_id;
|
||||
}
|
||||
|
||||
/*
|
||||
* The header for an fcpio request, whether from the firmware or from the
|
||||
* host driver
|
||||
*/
|
||||
struct fcpio_header {
|
||||
u8 type; /* enum fcpio_type */
|
||||
u8 status; /* header status entry */
|
||||
u16 _resvd; /* reserved */
|
||||
struct fcpio_tag tag; /* header tag */
|
||||
};
|
||||
|
||||
static inline void
|
||||
fcpio_header_enc(struct fcpio_header *hdr,
|
||||
u8 type, u8 status,
|
||||
struct fcpio_tag tag)
|
||||
{
|
||||
hdr->type = type;
|
||||
hdr->status = status;
|
||||
hdr->_resvd = 0;
|
||||
hdr->tag = tag;
|
||||
}
|
||||
|
||||
static inline void
|
||||
fcpio_header_dec(struct fcpio_header *hdr,
|
||||
u8 *type, u8 *status,
|
||||
struct fcpio_tag *tag)
|
||||
{
|
||||
*type = hdr->type;
|
||||
*status = hdr->status;
|
||||
*tag = hdr->tag;
|
||||
}
|
||||
|
||||
#define CDB_16 16
|
||||
#define CDB_32 32
|
||||
#define LUN_ADDRESS 8
|
||||
|
||||
/*
|
||||
* fcpio_icmnd_16: host -> firmware request
|
||||
*
|
||||
* used for sending out an initiator SCSI 16-byte command
|
||||
*/
|
||||
struct fcpio_icmnd_16 {
|
||||
u32 lunmap_id; /* index into lunmap table */
|
||||
u8 special_req_flags; /* special exchange request flags */
|
||||
u8 _resvd0[3]; /* reserved */
|
||||
u32 sgl_cnt; /* scatter-gather list count */
|
||||
u32 sense_len; /* sense buffer length */
|
||||
u64 sgl_addr; /* scatter-gather list addr */
|
||||
u64 sense_addr; /* sense buffer address */
|
||||
u8 crn; /* SCSI Command Reference No. */
|
||||
u8 pri_ta; /* SCSI Priority and Task attribute */
|
||||
u8 _resvd1; /* reserved: should be 0 */
|
||||
u8 flags; /* command flags */
|
||||
u8 scsi_cdb[CDB_16]; /* SCSI Cmnd Descriptor Block */
|
||||
u32 data_len; /* length of data expected */
|
||||
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
||||
u8 _resvd2; /* reserved */
|
||||
u8 d_id[3]; /* FC vNIC only: Target D_ID */
|
||||
u16 mss; /* FC vNIC only: max burst */
|
||||
u16 _resvd3; /* reserved */
|
||||
u32 r_a_tov; /* FC vNIC only: Res. Alloc Timeout */
|
||||
u32 e_d_tov; /* FC vNIC only: Err Detect Timeout */
|
||||
};
|
||||
|
||||
/*
|
||||
* Special request flags
|
||||
*/
|
||||
#define FCPIO_ICMND_SRFLAG_RETRY 0x01 /* Enable Retry handling on exchange */
|
||||
|
||||
/*
|
||||
* Priority/Task Attribute settings
|
||||
*/
|
||||
#define FCPIO_ICMND_PTA_SIMPLE 0 /* simple task attribute */
|
||||
#define FCPIO_ICMND_PTA_HEADQ 1 /* head of queue task attribute */
|
||||
#define FCPIO_ICMND_PTA_ORDERED 2 /* ordered task attribute */
|
||||
#define FCPIO_ICMND_PTA_ACA 4 /* auto contingent allegiance */
|
||||
#define FCPIO_ICMND_PRI_SHIFT 3 /* priority field starts in bit 3 */
|
||||
|
||||
/*
|
||||
* Command flags
|
||||
*/
|
||||
#define FCPIO_ICMND_RDDATA 0x02 /* read data */
|
||||
#define FCPIO_ICMND_WRDATA 0x01 /* write data */
|
||||
|
||||
/*
|
||||
* fcpio_icmnd_32: host -> firmware request
|
||||
*
|
||||
* used for sending out an initiator SCSI 32-byte command
|
||||
*/
|
||||
struct fcpio_icmnd_32 {
|
||||
u32 lunmap_id; /* index into lunmap table */
|
||||
u8 special_req_flags; /* special exchange request flags */
|
||||
u8 _resvd0[3]; /* reserved */
|
||||
u32 sgl_cnt; /* scatter-gather list count */
|
||||
u32 sense_len; /* sense buffer length */
|
||||
u64 sgl_addr; /* scatter-gather list addr */
|
||||
u64 sense_addr; /* sense buffer address */
|
||||
u8 crn; /* SCSI Command Reference No. */
|
||||
u8 pri_ta; /* SCSI Priority and Task attribute */
|
||||
u8 _resvd1; /* reserved: should be 0 */
|
||||
u8 flags; /* command flags */
|
||||
u8 scsi_cdb[CDB_32]; /* SCSI Cmnd Descriptor Block */
|
||||
u32 data_len; /* length of data expected */
|
||||
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
||||
u8 _resvd2; /* reserved */
|
||||
u8 d_id[3]; /* FC vNIC only: Target D_ID */
|
||||
u16 mss; /* FC vNIC only: max burst */
|
||||
u16 _resvd3; /* reserved */
|
||||
u32 r_a_tov; /* FC vNIC only: Res. Alloc Timeout */
|
||||
u32 e_d_tov; /* FC vNIC only: Error Detect Timeout */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_itmf: host -> firmware request
|
||||
*
|
||||
* used for requesting the firmware to abort a request and/or send out
|
||||
* a task management function
|
||||
*
|
||||
* The t_tag field is only needed when the request type is ABT_TASK.
|
||||
*/
|
||||
struct fcpio_itmf {
|
||||
u32 lunmap_id; /* index into lunmap table */
|
||||
u32 tm_req; /* SCSI Task Management request */
|
||||
u32 t_tag; /* header tag of fcpio to be aborted */
|
||||
u32 _resvd; /* _reserved */
|
||||
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
||||
u8 _resvd1; /* reserved */
|
||||
u8 d_id[3]; /* FC vNIC only: Target D_ID */
|
||||
u32 r_a_tov; /* FC vNIC only: R_A_TOV in msec */
|
||||
u32 e_d_tov; /* FC vNIC only: E_D_TOV in msec */
|
||||
};
|
||||
|
||||
/*
|
||||
* Task Management request
|
||||
*/
|
||||
enum fcpio_itmf_tm_req_type {
|
||||
FCPIO_ITMF_ABT_TASK_TERM = 0x01, /* abort task and terminate */
|
||||
FCPIO_ITMF_ABT_TASK, /* abort task and issue abts */
|
||||
FCPIO_ITMF_ABT_TASK_SET, /* abort task set */
|
||||
FCPIO_ITMF_CLR_TASK_SET, /* clear task set */
|
||||
FCPIO_ITMF_LUN_RESET, /* logical unit reset task mgmt */
|
||||
FCPIO_ITMF_CLR_ACA, /* Clear ACA condition */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_tdata: host -> firmware request
|
||||
*
|
||||
* used for requesting the firmware to send out a read data transfer for a
|
||||
* target command
|
||||
*/
|
||||
struct fcpio_tdata {
|
||||
u16 rx_id; /* FC rx_id of target command */
|
||||
u16 flags; /* command flags */
|
||||
u32 rel_offset; /* data sequence relative offset */
|
||||
u32 sgl_cnt; /* scatter-gather list count */
|
||||
u32 data_len; /* length of data expected to send */
|
||||
u64 sgl_addr; /* scatter-gather list address */
|
||||
};
|
||||
|
||||
/*
|
||||
* Command flags
|
||||
*/
|
||||
#define FCPIO_TDATA_SCSI_RSP 0x01 /* send a scsi resp. after last frame */
|
||||
|
||||
/*
|
||||
* fcpio_txrdy: host -> firmware request
|
||||
*
|
||||
* used for requesting the firmware to send out a write data transfer for a
|
||||
* target command
|
||||
*/
|
||||
struct fcpio_txrdy {
|
||||
u16 rx_id; /* FC rx_id of target command */
|
||||
u16 _resvd0; /* reserved */
|
||||
u32 rel_offset; /* data sequence relative offset */
|
||||
u32 sgl_cnt; /* scatter-gather list count */
|
||||
u32 data_len; /* length of data expected to send */
|
||||
u64 sgl_addr; /* scatter-gather list address */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_trsp: host -> firmware request
|
||||
*
|
||||
* used for requesting the firmware to send out a response for a target
|
||||
* command
|
||||
*/
|
||||
struct fcpio_trsp {
|
||||
u16 rx_id; /* FC rx_id of target command */
|
||||
u16 _resvd0; /* reserved */
|
||||
u32 sense_len; /* sense data buffer length */
|
||||
u64 sense_addr; /* sense data buffer address */
|
||||
u16 _resvd1; /* reserved */
|
||||
u8 flags; /* response request flags */
|
||||
u8 scsi_status; /* SCSI status */
|
||||
u32 residual; /* SCSI data residual value of I/O */
|
||||
};
|
||||
|
||||
/*
|
||||
* resposnse request flags
|
||||
*/
|
||||
#define FCPIO_TRSP_RESID_UNDER 0x08 /* residual is valid and is underflow */
|
||||
#define FCPIO_TRSP_RESID_OVER 0x04 /* residual is valid and is overflow */
|
||||
|
||||
/*
|
||||
* fcpio_ttmf_ack: host -> firmware response
|
||||
*
|
||||
* used by the host to indicate to the firmware it has received and processed
|
||||
* the target tmf request
|
||||
*/
|
||||
struct fcpio_ttmf_ack {
|
||||
u16 rx_id; /* FC rx_id of target command */
|
||||
u16 _resvd0; /* reserved */
|
||||
u32 tmf_status; /* SCSI task management status */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_tabort: host -> firmware request
|
||||
*
|
||||
* used by the host to request the firmware to abort a target request that was
|
||||
* received by the firmware
|
||||
*/
|
||||
struct fcpio_tabort {
|
||||
u16 rx_id; /* rx_id of the target request */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_reset: host -> firmware request
|
||||
*
|
||||
* used by the host to signal a reset of the driver to the firmware
|
||||
* and to request firmware to clean up all outstanding I/O
|
||||
*/
|
||||
struct fcpio_reset {
|
||||
u32 _resvd;
|
||||
};
|
||||
|
||||
enum fcpio_flogi_reg_format_type {
|
||||
FCPIO_FLOGI_REG_DEF_DEST = 0, /* Use the oui | s_id mac format */
|
||||
FCPIO_FLOGI_REG_GW_DEST, /* Use the fixed gateway mac */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_flogi_reg: host -> firmware request
|
||||
*
|
||||
* fc vnic only
|
||||
* used by the host to notify the firmware of the lif's s_id
|
||||
* and destination mac address format
|
||||
*/
|
||||
struct fcpio_flogi_reg {
|
||||
u8 format;
|
||||
u8 s_id[3]; /* FC vNIC only: Source S_ID */
|
||||
u8 gateway_mac[ETH_ALEN]; /* Destination gateway mac */
|
||||
u16 _resvd;
|
||||
u32 r_a_tov; /* R_A_TOV in msec */
|
||||
u32 e_d_tov; /* E_D_TOV in msec */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_echo: host -> firmware request
|
||||
*
|
||||
* sends a heartbeat echo request to the firmware
|
||||
*/
|
||||
struct fcpio_echo {
|
||||
u32 _resvd;
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_lunmap_req: host -> firmware request
|
||||
*
|
||||
* scsi vnic only
|
||||
* sends a request to retrieve the lunmap table for scsi vnics
|
||||
*/
|
||||
struct fcpio_lunmap_req {
|
||||
u64 addr; /* address of the buffer */
|
||||
u32 len; /* len of the buffer */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_flogi_fip_reg: host -> firmware request
|
||||
*
|
||||
* fc vnic only
|
||||
* used by the host to notify the firmware of the lif's s_id
|
||||
* and destination mac address format
|
||||
*/
|
||||
struct fcpio_flogi_fip_reg {
|
||||
u8 _resvd0;
|
||||
u8 s_id[3]; /* FC vNIC only: Source S_ID */
|
||||
u8 fcf_mac[ETH_ALEN]; /* FCF Target destination mac */
|
||||
u16 _resvd1;
|
||||
u32 r_a_tov; /* R_A_TOV in msec */
|
||||
u32 e_d_tov; /* E_D_TOV in msec */
|
||||
u8 ha_mac[ETH_ALEN]; /* Host adapter source mac */
|
||||
u16 _resvd2;
|
||||
};
|
||||
|
||||
/*
|
||||
* Basic structure for all fcpio structures that are sent from the host to the
|
||||
* firmware. They are 128 bytes per structure.
|
||||
*/
|
||||
#define FCPIO_HOST_REQ_LEN 128 /* expected length of host requests */
|
||||
|
||||
struct fcpio_host_req {
|
||||
struct fcpio_header hdr;
|
||||
|
||||
union {
|
||||
/*
|
||||
* Defines space needed for request
|
||||
*/
|
||||
u8 buf[FCPIO_HOST_REQ_LEN - sizeof(struct fcpio_header)];
|
||||
|
||||
/*
|
||||
* Initiator host requests
|
||||
*/
|
||||
struct fcpio_icmnd_16 icmnd_16;
|
||||
struct fcpio_icmnd_32 icmnd_32;
|
||||
struct fcpio_itmf itmf;
|
||||
|
||||
/*
|
||||
* Target host requests
|
||||
*/
|
||||
struct fcpio_tdata tdata;
|
||||
struct fcpio_txrdy txrdy;
|
||||
struct fcpio_trsp trsp;
|
||||
struct fcpio_ttmf_ack ttmf_ack;
|
||||
struct fcpio_tabort tabort;
|
||||
|
||||
/*
|
||||
* Misc requests
|
||||
*/
|
||||
struct fcpio_reset reset;
|
||||
struct fcpio_flogi_reg flogi_reg;
|
||||
struct fcpio_echo echo;
|
||||
struct fcpio_lunmap_req lunmap_req;
|
||||
struct fcpio_flogi_fip_reg flogi_fip_reg;
|
||||
} u;
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_icmnd_cmpl: firmware -> host response
|
||||
*
|
||||
* used for sending the host a response to an initiator command
|
||||
*/
|
||||
struct fcpio_icmnd_cmpl {
|
||||
u8 _resvd0[6]; /* reserved */
|
||||
u8 flags; /* response flags */
|
||||
u8 scsi_status; /* SCSI status */
|
||||
u32 residual; /* SCSI data residual length */
|
||||
u32 sense_len; /* SCSI sense length */
|
||||
};
|
||||
|
||||
/*
|
||||
* response flags
|
||||
*/
|
||||
#define FCPIO_ICMND_CMPL_RESID_UNDER 0x08 /* resid under and valid */
|
||||
#define FCPIO_ICMND_CMPL_RESID_OVER 0x04 /* resid over and valid */
|
||||
|
||||
/*
|
||||
* fcpio_itmf_cmpl: firmware -> host response
|
||||
*
|
||||
* used for sending the host a response for a itmf request
|
||||
*/
|
||||
struct fcpio_itmf_cmpl {
|
||||
u32 _resvd; /* reserved */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_tcmnd_16: firmware -> host request
|
||||
*
|
||||
* used by the firmware to notify the host of an incoming target SCSI 16-Byte
|
||||
* request
|
||||
*/
|
||||
struct fcpio_tcmnd_16 {
|
||||
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
||||
u8 crn; /* SCSI Command Reference No. */
|
||||
u8 pri_ta; /* SCSI Priority and Task attribute */
|
||||
u8 _resvd2; /* reserved: should be 0 */
|
||||
u8 flags; /* command flags */
|
||||
u8 scsi_cdb[CDB_16]; /* SCSI Cmnd Descriptor Block */
|
||||
u32 data_len; /* length of data expected */
|
||||
u8 _resvd1; /* reserved */
|
||||
u8 s_id[3]; /* FC vNIC only: Source S_ID */
|
||||
};
|
||||
|
||||
/*
|
||||
* Priority/Task Attribute settings
|
||||
*/
|
||||
#define FCPIO_TCMND_PTA_SIMPLE 0 /* simple task attribute */
|
||||
#define FCPIO_TCMND_PTA_HEADQ 1 /* head of queue task attribute */
|
||||
#define FCPIO_TCMND_PTA_ORDERED 2 /* ordered task attribute */
|
||||
#define FCPIO_TCMND_PTA_ACA 4 /* auto contingent allegiance */
|
||||
#define FCPIO_TCMND_PRI_SHIFT 3 /* priority field starts in bit 3 */
|
||||
|
||||
/*
|
||||
* Command flags
|
||||
*/
|
||||
#define FCPIO_TCMND_RDDATA 0x02 /* read data */
|
||||
#define FCPIO_TCMND_WRDATA 0x01 /* write data */
|
||||
|
||||
/*
|
||||
* fcpio_tcmnd_32: firmware -> host request
|
||||
*
|
||||
* used by the firmware to notify the host of an incoming target SCSI 32-Byte
|
||||
* request
|
||||
*/
|
||||
struct fcpio_tcmnd_32 {
|
||||
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
||||
u8 crn; /* SCSI Command Reference No. */
|
||||
u8 pri_ta; /* SCSI Priority and Task attribute */
|
||||
u8 _resvd2; /* reserved: should be 0 */
|
||||
u8 flags; /* command flags */
|
||||
u8 scsi_cdb[CDB_32]; /* SCSI Cmnd Descriptor Block */
|
||||
u32 data_len; /* length of data expected */
|
||||
u8 _resvd0; /* reserved */
|
||||
u8 s_id[3]; /* FC vNIC only: Source S_ID */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_tdrsp_cmpl: firmware -> host response
|
||||
*
|
||||
* used by the firmware to notify the host of a response to a host target
|
||||
* command
|
||||
*/
|
||||
struct fcpio_tdrsp_cmpl {
|
||||
u16 rx_id; /* rx_id of the target request */
|
||||
u16 _resvd0; /* reserved */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_ttmf: firmware -> host request
|
||||
*
|
||||
* used by the firmware to notify the host of an incoming task management
|
||||
* function request
|
||||
*/
|
||||
struct fcpio_ttmf {
|
||||
u8 _resvd0; /* reserved */
|
||||
u8 s_id[3]; /* FC vNIC only: Source S_ID */
|
||||
u8 lun[LUN_ADDRESS]; /* FC vNIC only: LUN address */
|
||||
u8 crn; /* SCSI Command Reference No. */
|
||||
u8 _resvd2[3]; /* reserved */
|
||||
u32 tmf_type; /* task management request type */
|
||||
};
|
||||
|
||||
/*
|
||||
* Task Management request
|
||||
*/
|
||||
#define FCPIO_TTMF_CLR_ACA 0x40 /* Clear ACA condition */
|
||||
#define FCPIO_TTMF_LUN_RESET 0x10 /* logical unit reset task mgmt */
|
||||
#define FCPIO_TTMF_CLR_TASK_SET 0x04 /* clear task set */
|
||||
#define FCPIO_TTMF_ABT_TASK_SET 0x02 /* abort task set */
|
||||
#define FCPIO_TTMF_ABT_TASK 0x01 /* abort task */
|
||||
|
||||
/*
|
||||
* fcpio_tabort_cmpl: firmware -> host response
|
||||
*
|
||||
* used by the firmware to respond to a host's tabort request
|
||||
*/
|
||||
struct fcpio_tabort_cmpl {
|
||||
u16 rx_id; /* rx_id of the target request */
|
||||
u16 _resvd0; /* reserved */
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_ack: firmware -> host response
|
||||
*
|
||||
* used by firmware to notify the host of the last work request received
|
||||
*/
|
||||
struct fcpio_ack {
|
||||
u16 request_out; /* last host entry received */
|
||||
u16 _resvd;
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_reset_cmpl: firmware -> host response
|
||||
*
|
||||
* use by firmware to respond to the host's reset request
|
||||
*/
|
||||
struct fcpio_reset_cmpl {
|
||||
u16 vnic_id;
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_flogi_reg_cmpl: firmware -> host response
|
||||
*
|
||||
* fc vnic only
|
||||
* response to the fcpio_flogi_reg request
|
||||
*/
|
||||
struct fcpio_flogi_reg_cmpl {
|
||||
u32 _resvd;
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_echo_cmpl: firmware -> host response
|
||||
*
|
||||
* response to the fcpio_echo request
|
||||
*/
|
||||
struct fcpio_echo_cmpl {
|
||||
u32 _resvd;
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_lunmap_chng: firmware -> host notification
|
||||
*
|
||||
* scsi vnic only
|
||||
* notifies the host that the lunmap tables have changed
|
||||
*/
|
||||
struct fcpio_lunmap_chng {
|
||||
u32 _resvd;
|
||||
};
|
||||
|
||||
/*
|
||||
* fcpio_lunmap_req_cmpl: firmware -> host response
|
||||
*
|
||||
* scsi vnic only
|
||||
* response for lunmap table request from the host
|
||||
*/
|
||||
struct fcpio_lunmap_req_cmpl {
|
||||
u32 _resvd;
|
||||
};
|
||||
|
||||
/*
|
||||
* Basic structure for all fcpio structures that are sent from the firmware to
|
||||
* the host. They are 64 bytes per structure.
|
||||
*/
|
||||
#define FCPIO_FW_REQ_LEN 64 /* expected length of fw requests */
|
||||
struct fcpio_fw_req {
|
||||
struct fcpio_header hdr;
|
||||
|
||||
union {
|
||||
/*
|
||||
* Defines space needed for request
|
||||
*/
|
||||
u8 buf[FCPIO_FW_REQ_LEN - sizeof(struct fcpio_header)];
|
||||
|
||||
/*
|
||||
* Initiator firmware responses
|
||||
*/
|
||||
struct fcpio_icmnd_cmpl icmnd_cmpl;
|
||||
struct fcpio_itmf_cmpl itmf_cmpl;
|
||||
|
||||
/*
|
||||
* Target firmware new requests
|
||||
*/
|
||||
struct fcpio_tcmnd_16 tcmnd_16;
|
||||
struct fcpio_tcmnd_32 tcmnd_32;
|
||||
|
||||
/*
|
||||
* Target firmware responses
|
||||
*/
|
||||
struct fcpio_tdrsp_cmpl tdrsp_cmpl;
|
||||
struct fcpio_ttmf ttmf;
|
||||
struct fcpio_tabort_cmpl tabort_cmpl;
|
||||
|
||||
/*
|
||||
* Firmware response to work received
|
||||
*/
|
||||
struct fcpio_ack ack;
|
||||
|
||||
/*
|
||||
* Misc requests
|
||||
*/
|
||||
struct fcpio_reset_cmpl reset_cmpl;
|
||||
struct fcpio_flogi_reg_cmpl flogi_reg_cmpl;
|
||||
struct fcpio_echo_cmpl echo_cmpl;
|
||||
struct fcpio_lunmap_chng lunmap_chng;
|
||||
struct fcpio_lunmap_req_cmpl lunmap_req_cmpl;
|
||||
} u;
|
||||
};
|
||||
|
||||
/*
|
||||
* Access routines to encode and decode the color bit, which is the most
|
||||
* significant bit of the MSB of the structure
|
||||
*/
|
||||
static inline void fcpio_color_enc(struct fcpio_fw_req *fw_req, u8 color)
|
||||
{
|
||||
u8 *c = ((u8 *) fw_req) + sizeof(struct fcpio_fw_req) - 1;
|
||||
|
||||
if (color)
|
||||
*c |= 0x80;
|
||||
else
|
||||
*c &= ~0x80;
|
||||
}
|
||||
|
||||
static inline void fcpio_color_dec(struct fcpio_fw_req *fw_req, u8 *color)
|
||||
{
|
||||
u8 *c = ((u8 *) fw_req) + sizeof(struct fcpio_fw_req) - 1;
|
||||
|
||||
*color = *c >> 7;
|
||||
|
||||
/*
|
||||
* Make sure color bit is read from desc *before* other fields
|
||||
* are read from desc. Hardware guarantees color bit is last
|
||||
* bit (byte) written. Adding the rmb() prevents the compiler
|
||||
* and/or CPU from reordering the reads which would potentially
|
||||
* result in reading stale values.
|
||||
*/
|
||||
|
||||
rmb();
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Lunmap table entry for scsi vnics
|
||||
*/
|
||||
#define FCPIO_LUNMAP_TABLE_SIZE 256
|
||||
#define FCPIO_FLAGS_LUNMAP_VALID 0x80
|
||||
#define FCPIO_FLAGS_BOOT 0x01
|
||||
struct fcpio_lunmap_entry {
|
||||
u8 bus;
|
||||
u8 target;
|
||||
u8 lun;
|
||||
u8 path_cnt;
|
||||
u16 flags;
|
||||
u16 update_cnt;
|
||||
};
|
||||
|
||||
struct fcpio_lunmap_tbl {
|
||||
u32 update_cnt;
|
||||
struct fcpio_lunmap_entry lunmaps[FCPIO_LUNMAP_TABLE_SIZE];
|
||||
};
|
||||
|
||||
#endif /* _FCPIO_H_ */
|
265
drivers/scsi/fnic/fnic.h
Normal file
265
drivers/scsi/fnic/fnic.h
Normal file
|
@ -0,0 +1,265 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _FNIC_H_
|
||||
#define _FNIC_H_
|
||||
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/netdevice.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <scsi/libfc.h>
|
||||
#include "fnic_io.h"
|
||||
#include "fnic_res.h"
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_wq.h"
|
||||
#include "vnic_rq.h"
|
||||
#include "vnic_cq.h"
|
||||
#include "vnic_wq_copy.h"
|
||||
#include "vnic_intr.h"
|
||||
#include "vnic_stats.h"
|
||||
#include "vnic_scsi.h"
|
||||
|
||||
#define DRV_NAME "fnic"
|
||||
#define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
|
||||
#define DRV_VERSION "1.0.0.1121"
|
||||
#define PFX DRV_NAME ": "
|
||||
#define DFX DRV_NAME "%d: "
|
||||
|
||||
#define DESC_CLEAN_LOW_WATERMARK 8
|
||||
#define FNIC_MAX_IO_REQ 2048 /* scsi_cmnd tag map entries */
|
||||
#define FNIC_IO_LOCKS 64 /* IO locks: power of 2 */
|
||||
#define FNIC_DFLT_QUEUE_DEPTH 32
|
||||
#define FNIC_STATS_RATE_LIMIT 4 /* limit rate at which stats are pulled up */
|
||||
|
||||
/*
|
||||
* Tag bits used for special requests.
|
||||
*/
|
||||
#define BIT(nr) (1UL << (nr))
|
||||
#define FNIC_TAG_ABORT BIT(30) /* tag bit indicating abort */
|
||||
#define FNIC_TAG_DEV_RST BIT(29) /* indicates device reset */
|
||||
#define FNIC_TAG_MASK (BIT(24) - 1) /* mask for lookup */
|
||||
#define FNIC_NO_TAG -1
|
||||
|
||||
/*
|
||||
* Usage of the scsi_cmnd scratchpad.
|
||||
* These fields are locked by the hashed io_req_lock.
|
||||
*/
|
||||
#define CMD_SP(Cmnd) ((Cmnd)->SCp.ptr)
|
||||
#define CMD_STATE(Cmnd) ((Cmnd)->SCp.phase)
|
||||
#define CMD_ABTS_STATUS(Cmnd) ((Cmnd)->SCp.Message)
|
||||
#define CMD_LR_STATUS(Cmnd) ((Cmnd)->SCp.have_data_in)
|
||||
#define CMD_TAG(Cmnd) ((Cmnd)->SCp.sent_command)
|
||||
|
||||
#define FCPIO_INVALID_CODE 0x100 /* hdr_status value unused by firmware */
|
||||
|
||||
#define FNIC_LUN_RESET_TIMEOUT 10000 /* mSec */
|
||||
#define FNIC_HOST_RESET_TIMEOUT 10000 /* mSec */
|
||||
#define FNIC_RMDEVICE_TIMEOUT 1000 /* mSec */
|
||||
#define FNIC_HOST_RESET_SETTLE_TIME 30 /* Sec */
|
||||
|
||||
#define FNIC_MAX_FCP_TARGET 256
|
||||
|
||||
extern unsigned int fnic_log_level;
|
||||
|
||||
#define FNIC_MAIN_LOGGING 0x01
|
||||
#define FNIC_FCS_LOGGING 0x02
|
||||
#define FNIC_SCSI_LOGGING 0x04
|
||||
#define FNIC_ISR_LOGGING 0x08
|
||||
|
||||
#define FNIC_CHECK_LOGGING(LEVEL, CMD) \
|
||||
do { \
|
||||
if (unlikely(fnic_log_level & LEVEL)) \
|
||||
do { \
|
||||
CMD; \
|
||||
} while (0); \
|
||||
} while (0)
|
||||
|
||||
#define FNIC_MAIN_DBG(kern_level, host, fmt, args...) \
|
||||
FNIC_CHECK_LOGGING(FNIC_MAIN_LOGGING, \
|
||||
shost_printk(kern_level, host, fmt, ##args);)
|
||||
|
||||
#define FNIC_FCS_DBG(kern_level, host, fmt, args...) \
|
||||
FNIC_CHECK_LOGGING(FNIC_FCS_LOGGING, \
|
||||
shost_printk(kern_level, host, fmt, ##args);)
|
||||
|
||||
#define FNIC_SCSI_DBG(kern_level, host, fmt, args...) \
|
||||
FNIC_CHECK_LOGGING(FNIC_SCSI_LOGGING, \
|
||||
shost_printk(kern_level, host, fmt, ##args);)
|
||||
|
||||
#define FNIC_ISR_DBG(kern_level, host, fmt, args...) \
|
||||
FNIC_CHECK_LOGGING(FNIC_ISR_LOGGING, \
|
||||
shost_printk(kern_level, host, fmt, ##args);)
|
||||
|
||||
extern const char *fnic_state_str[];
|
||||
|
||||
enum fnic_intx_intr_index {
|
||||
FNIC_INTX_WQ_RQ_COPYWQ,
|
||||
FNIC_INTX_ERR,
|
||||
FNIC_INTX_NOTIFY,
|
||||
FNIC_INTX_INTR_MAX,
|
||||
};
|
||||
|
||||
enum fnic_msix_intr_index {
|
||||
FNIC_MSIX_RQ,
|
||||
FNIC_MSIX_WQ,
|
||||
FNIC_MSIX_WQ_COPY,
|
||||
FNIC_MSIX_ERR_NOTIFY,
|
||||
FNIC_MSIX_INTR_MAX,
|
||||
};
|
||||
|
||||
struct fnic_msix_entry {
|
||||
int requested;
|
||||
char devname[IFNAMSIZ];
|
||||
irqreturn_t (*isr)(int, void *);
|
||||
void *devid;
|
||||
};
|
||||
|
||||
enum fnic_state {
|
||||
FNIC_IN_FC_MODE = 0,
|
||||
FNIC_IN_FC_TRANS_ETH_MODE,
|
||||
FNIC_IN_ETH_MODE,
|
||||
FNIC_IN_ETH_TRANS_FC_MODE,
|
||||
};
|
||||
|
||||
#define FNIC_WQ_COPY_MAX 1
|
||||
#define FNIC_WQ_MAX 1
|
||||
#define FNIC_RQ_MAX 1
|
||||
#define FNIC_CQ_MAX (FNIC_WQ_COPY_MAX + FNIC_WQ_MAX + FNIC_RQ_MAX)
|
||||
|
||||
struct mempool;
|
||||
|
||||
/* Per-instance private data structure */
|
||||
struct fnic {
|
||||
struct fc_lport *lport;
|
||||
struct vnic_dev_bar bar0;
|
||||
|
||||
struct msix_entry msix_entry[FNIC_MSIX_INTR_MAX];
|
||||
struct fnic_msix_entry msix[FNIC_MSIX_INTR_MAX];
|
||||
|
||||
struct vnic_stats *stats;
|
||||
unsigned long stats_time; /* time of stats update */
|
||||
struct vnic_nic_cfg *nic_cfg;
|
||||
char name[IFNAMSIZ];
|
||||
struct timer_list notify_timer; /* used for MSI interrupts */
|
||||
|
||||
unsigned int err_intr_offset;
|
||||
unsigned int link_intr_offset;
|
||||
|
||||
unsigned int wq_count;
|
||||
unsigned int cq_count;
|
||||
|
||||
u32 fcoui_mode:1; /* use fcoui address*/
|
||||
u32 vlan_hw_insert:1; /* let hw insert the tag */
|
||||
u32 in_remove:1; /* fnic device in removal */
|
||||
u32 stop_rx_link_events:1; /* stop proc. rx frames, link events */
|
||||
|
||||
struct completion *remove_wait; /* device remove thread blocks */
|
||||
|
||||
struct fc_frame *flogi;
|
||||
struct fc_frame *flogi_resp;
|
||||
u16 flogi_oxid;
|
||||
unsigned long s_id;
|
||||
enum fnic_state state;
|
||||
spinlock_t fnic_lock;
|
||||
|
||||
u16 vlan_id; /* VLAN tag including priority */
|
||||
u8 mac_addr[ETH_ALEN];
|
||||
u8 dest_addr[ETH_ALEN];
|
||||
u8 data_src_addr[ETH_ALEN];
|
||||
u64 fcp_input_bytes; /* internal statistic */
|
||||
u64 fcp_output_bytes; /* internal statistic */
|
||||
u32 link_down_cnt;
|
||||
int link_status;
|
||||
|
||||
struct list_head list;
|
||||
struct pci_dev *pdev;
|
||||
struct vnic_fc_config config;
|
||||
struct vnic_dev *vdev;
|
||||
unsigned int raw_wq_count;
|
||||
unsigned int wq_copy_count;
|
||||
unsigned int rq_count;
|
||||
int fw_ack_index[FNIC_WQ_COPY_MAX];
|
||||
unsigned short fw_ack_recd[FNIC_WQ_COPY_MAX];
|
||||
unsigned short wq_copy_desc_low[FNIC_WQ_COPY_MAX];
|
||||
unsigned int intr_count;
|
||||
u32 __iomem *legacy_pba;
|
||||
struct fnic_host_tag *tags;
|
||||
mempool_t *io_req_pool;
|
||||
mempool_t *io_sgl_pool[FNIC_SGL_NUM_CACHES];
|
||||
spinlock_t io_req_lock[FNIC_IO_LOCKS]; /* locks for scsi cmnds */
|
||||
|
||||
struct work_struct link_work;
|
||||
struct work_struct frame_work;
|
||||
struct sk_buff_head frame_queue;
|
||||
|
||||
/* copy work queue cache line section */
|
||||
____cacheline_aligned struct vnic_wq_copy wq_copy[FNIC_WQ_COPY_MAX];
|
||||
/* completion queue cache line section */
|
||||
____cacheline_aligned struct vnic_cq cq[FNIC_CQ_MAX];
|
||||
|
||||
spinlock_t wq_copy_lock[FNIC_WQ_COPY_MAX];
|
||||
|
||||
/* work queue cache line section */
|
||||
____cacheline_aligned struct vnic_wq wq[FNIC_WQ_MAX];
|
||||
spinlock_t wq_lock[FNIC_WQ_MAX];
|
||||
|
||||
/* receive queue cache line section */
|
||||
____cacheline_aligned struct vnic_rq rq[FNIC_RQ_MAX];
|
||||
|
||||
/* interrupt resource cache line section */
|
||||
____cacheline_aligned struct vnic_intr intr[FNIC_MSIX_INTR_MAX];
|
||||
};
|
||||
|
||||
extern struct workqueue_struct *fnic_event_queue;
|
||||
extern struct device_attribute *fnic_attrs[];
|
||||
|
||||
void fnic_clear_intr_mode(struct fnic *fnic);
|
||||
int fnic_set_intr_mode(struct fnic *fnic);
|
||||
void fnic_free_intr(struct fnic *fnic);
|
||||
int fnic_request_intr(struct fnic *fnic);
|
||||
|
||||
int fnic_send(struct fc_lport *, struct fc_frame *);
|
||||
void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf);
|
||||
void fnic_handle_frame(struct work_struct *work);
|
||||
void fnic_handle_link(struct work_struct *work);
|
||||
int fnic_rq_cmpl_handler(struct fnic *fnic, int);
|
||||
int fnic_alloc_rq_frame(struct vnic_rq *rq);
|
||||
void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf);
|
||||
int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp);
|
||||
|
||||
int fnic_queuecommand(struct scsi_cmnd *, void (*done)(struct scsi_cmnd *));
|
||||
int fnic_abort_cmd(struct scsi_cmnd *);
|
||||
int fnic_device_reset(struct scsi_cmnd *);
|
||||
int fnic_host_reset(struct scsi_cmnd *);
|
||||
int fnic_reset(struct Scsi_Host *);
|
||||
void fnic_scsi_cleanup(struct fc_lport *);
|
||||
void fnic_scsi_abort_io(struct fc_lport *);
|
||||
void fnic_empty_scsi_cleanup(struct fc_lport *);
|
||||
void fnic_exch_mgr_reset(struct fc_lport *, u32, u32);
|
||||
int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int);
|
||||
int fnic_wq_cmpl_handler(struct fnic *fnic, int);
|
||||
int fnic_flogi_reg_handler(struct fnic *fnic);
|
||||
void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq,
|
||||
struct fcpio_host_req *desc);
|
||||
int fnic_fw_reset_handler(struct fnic *fnic);
|
||||
void fnic_terminate_rport_io(struct fc_rport *);
|
||||
const char *fnic_state_to_str(unsigned int state);
|
||||
|
||||
void fnic_log_q_error(struct fnic *fnic);
|
||||
void fnic_handle_link_event(struct fnic *fnic);
|
||||
|
||||
#endif /* _FNIC_H_ */
|
56
drivers/scsi/fnic/fnic_attrs.c
Normal file
56
drivers/scsi/fnic/fnic_attrs.c
Normal file
|
@ -0,0 +1,56 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#include <linux/string.h>
|
||||
#include <linux/device.h>
|
||||
#include <scsi/scsi_host.h>
|
||||
#include "fnic.h"
|
||||
|
||||
static ssize_t fnic_show_state(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct fc_lport *lp = shost_priv(class_to_shost(dev));
|
||||
struct fnic *fnic = lport_priv(lp);
|
||||
|
||||
return snprintf(buf, PAGE_SIZE, "%s\n", fnic_state_str[fnic->state]);
|
||||
}
|
||||
|
||||
static ssize_t fnic_show_drv_version(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
return snprintf(buf, PAGE_SIZE, "%s\n", DRV_VERSION);
|
||||
}
|
||||
|
||||
static ssize_t fnic_show_link_state(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct fc_lport *lp = shost_priv(class_to_shost(dev));
|
||||
|
||||
return snprintf(buf, PAGE_SIZE, "%s\n", (lp->link_up)
|
||||
? "Link Up" : "Link Down");
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(fnic_state, S_IRUGO, fnic_show_state, NULL);
|
||||
static DEVICE_ATTR(drv_version, S_IRUGO, fnic_show_drv_version, NULL);
|
||||
static DEVICE_ATTR(link_state, S_IRUGO, fnic_show_link_state, NULL);
|
||||
|
||||
struct device_attribute *fnic_attrs[] = {
|
||||
&dev_attr_fnic_state,
|
||||
&dev_attr_drv_version,
|
||||
&dev_attr_link_state,
|
||||
NULL,
|
||||
};
|
742
drivers/scsi/fnic/fnic_fcs.c
Normal file
742
drivers/scsi/fnic/fnic_fcs.c
Normal file
|
@ -0,0 +1,742 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#include <linux/errno.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/skbuff.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/if_ether.h>
|
||||
#include <linux/if_vlan.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <scsi/fc/fc_els.h>
|
||||
#include <scsi/fc/fc_fcoe.h>
|
||||
#include <scsi/fc_frame.h>
|
||||
#include <scsi/libfc.h>
|
||||
#include "fnic_io.h"
|
||||
#include "fnic.h"
|
||||
#include "cq_enet_desc.h"
|
||||
#include "cq_exch_desc.h"
|
||||
|
||||
struct workqueue_struct *fnic_event_queue;
|
||||
|
||||
void fnic_handle_link(struct work_struct *work)
|
||||
{
|
||||
struct fnic *fnic = container_of(work, struct fnic, link_work);
|
||||
unsigned long flags;
|
||||
int old_link_status;
|
||||
u32 old_link_down_cnt;
|
||||
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
|
||||
if (fnic->stop_rx_link_events) {
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
return;
|
||||
}
|
||||
|
||||
old_link_down_cnt = fnic->link_down_cnt;
|
||||
old_link_status = fnic->link_status;
|
||||
fnic->link_status = vnic_dev_link_status(fnic->vdev);
|
||||
fnic->link_down_cnt = vnic_dev_link_down_cnt(fnic->vdev);
|
||||
|
||||
if (old_link_status == fnic->link_status) {
|
||||
if (!fnic->link_status)
|
||||
/* DOWN -> DOWN */
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
else {
|
||||
if (old_link_down_cnt != fnic->link_down_cnt) {
|
||||
/* UP -> DOWN -> UP */
|
||||
fnic->lport->host_stats.link_failure_count++;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"link down\n");
|
||||
fc_linkdown(fnic->lport);
|
||||
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"link up\n");
|
||||
fc_linkup(fnic->lport);
|
||||
} else
|
||||
/* UP -> UP */
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
}
|
||||
} else if (fnic->link_status) {
|
||||
/* DOWN -> UP */
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link up\n");
|
||||
fc_linkup(fnic->lport);
|
||||
} else {
|
||||
/* UP -> DOWN */
|
||||
fnic->lport->host_stats.link_failure_count++;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host, "link down\n");
|
||||
fc_linkdown(fnic->lport);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* This function passes incoming fabric frames to libFC
|
||||
*/
|
||||
void fnic_handle_frame(struct work_struct *work)
|
||||
{
|
||||
struct fnic *fnic = container_of(work, struct fnic, frame_work);
|
||||
struct fc_lport *lp = fnic->lport;
|
||||
unsigned long flags;
|
||||
struct sk_buff *skb;
|
||||
struct fc_frame *fp;
|
||||
|
||||
while ((skb = skb_dequeue(&fnic->frame_queue))) {
|
||||
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
if (fnic->stop_rx_link_events) {
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
dev_kfree_skb(skb);
|
||||
return;
|
||||
}
|
||||
fp = (struct fc_frame *)skb;
|
||||
/* if Flogi resp frame, register the address */
|
||||
if (fr_flags(fp)) {
|
||||
vnic_dev_add_addr(fnic->vdev,
|
||||
fnic->data_src_addr);
|
||||
fr_flags(fp) = 0;
|
||||
}
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
fc_exch_recv(lp, lp->emp, fp);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static inline void fnic_import_rq_fc_frame(struct sk_buff *skb,
|
||||
u32 len, u8 sof, u8 eof)
|
||||
{
|
||||
struct fc_frame *fp = (struct fc_frame *)skb;
|
||||
|
||||
skb_trim(skb, len);
|
||||
fr_eof(fp) = eof;
|
||||
fr_sof(fp) = sof;
|
||||
}
|
||||
|
||||
|
||||
static inline int fnic_import_rq_eth_pkt(struct sk_buff *skb, u32 len)
|
||||
{
|
||||
struct fc_frame *fp;
|
||||
struct ethhdr *eh;
|
||||
struct vlan_ethhdr *vh;
|
||||
struct fcoe_hdr *fcoe_hdr;
|
||||
struct fcoe_crc_eof *ft;
|
||||
u32 transport_len = 0;
|
||||
|
||||
eh = (struct ethhdr *)skb->data;
|
||||
vh = (struct vlan_ethhdr *)skb->data;
|
||||
if (vh->h_vlan_proto == htons(ETH_P_8021Q) &&
|
||||
vh->h_vlan_encapsulated_proto == htons(ETH_P_FCOE)) {
|
||||
skb_pull(skb, sizeof(struct vlan_ethhdr));
|
||||
transport_len += sizeof(struct vlan_ethhdr);
|
||||
} else if (eh->h_proto == htons(ETH_P_FCOE)) {
|
||||
transport_len += sizeof(struct ethhdr);
|
||||
skb_pull(skb, sizeof(struct ethhdr));
|
||||
} else
|
||||
return -1;
|
||||
|
||||
fcoe_hdr = (struct fcoe_hdr *)skb->data;
|
||||
if (FC_FCOE_DECAPS_VER(fcoe_hdr) != FC_FCOE_VER)
|
||||
return -1;
|
||||
|
||||
fp = (struct fc_frame *)skb;
|
||||
fc_frame_init(fp);
|
||||
fr_sof(fp) = fcoe_hdr->fcoe_sof;
|
||||
skb_pull(skb, sizeof(struct fcoe_hdr));
|
||||
transport_len += sizeof(struct fcoe_hdr);
|
||||
|
||||
ft = (struct fcoe_crc_eof *)(skb->data + len -
|
||||
transport_len - sizeof(*ft));
|
||||
fr_eof(fp) = ft->fcoe_eof;
|
||||
skb_trim(skb, len - transport_len - sizeof(*ft));
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline int fnic_handle_flogi_resp(struct fnic *fnic,
|
||||
struct fc_frame *fp)
|
||||
{
|
||||
u8 mac[ETH_ALEN] = FC_FCOE_FLOGI_MAC;
|
||||
struct ethhdr *eth_hdr;
|
||||
struct fc_frame_header *fh;
|
||||
int ret = 0;
|
||||
unsigned long flags;
|
||||
struct fc_frame *old_flogi_resp = NULL;
|
||||
|
||||
fh = (struct fc_frame_header *)fr_hdr(fp);
|
||||
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
|
||||
if (fnic->state == FNIC_IN_ETH_MODE) {
|
||||
|
||||
/*
|
||||
* Check if oxid matches on taking the lock. A new Flogi
|
||||
* issued by libFC might have changed the fnic cached oxid
|
||||
*/
|
||||
if (fnic->flogi_oxid != ntohs(fh->fh_ox_id)) {
|
||||
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"Flogi response oxid not"
|
||||
" matching cached oxid, dropping frame"
|
||||
"\n");
|
||||
ret = -1;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
dev_kfree_skb_irq(fp_skb(fp));
|
||||
goto handle_flogi_resp_end;
|
||||
}
|
||||
|
||||
/* Drop older cached flogi response frame, cache this frame */
|
||||
old_flogi_resp = fnic->flogi_resp;
|
||||
fnic->flogi_resp = fp;
|
||||
fnic->flogi_oxid = FC_XID_UNKNOWN;
|
||||
|
||||
/*
|
||||
* this frame is part of flogi get the src mac addr from this
|
||||
* frame if the src mac is fcoui based then we mark the
|
||||
* address mode flag to use fcoui base for dst mac addr
|
||||
* otherwise we have to store the fcoe gateway addr
|
||||
*/
|
||||
eth_hdr = (struct ethhdr *)skb_mac_header(fp_skb(fp));
|
||||
memcpy(mac, eth_hdr->h_source, ETH_ALEN);
|
||||
|
||||
if (ntoh24(mac) == FC_FCOE_OUI)
|
||||
fnic->fcoui_mode = 1;
|
||||
else {
|
||||
fnic->fcoui_mode = 0;
|
||||
memcpy(fnic->dest_addr, mac, ETH_ALEN);
|
||||
}
|
||||
|
||||
/*
|
||||
* Except for Flogi frame, all outbound frames from us have the
|
||||
* Eth Src address as FC_FCOE_OUI"our_sid". Flogi frame uses
|
||||
* the vnic MAC address as the Eth Src address
|
||||
*/
|
||||
fc_fcoe_set_mac(fnic->data_src_addr, fh->fh_d_id);
|
||||
|
||||
/* We get our s_id from the d_id of the flogi resp frame */
|
||||
fnic->s_id = ntoh24(fh->fh_d_id);
|
||||
|
||||
/* Change state to reflect transition from Eth to FC mode */
|
||||
fnic->state = FNIC_IN_ETH_TRANS_FC_MODE;
|
||||
|
||||
} else {
|
||||
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"Unexpected fnic state %s while"
|
||||
" processing flogi resp\n",
|
||||
fnic_state_to_str(fnic->state));
|
||||
ret = -1;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
dev_kfree_skb_irq(fp_skb(fp));
|
||||
goto handle_flogi_resp_end;
|
||||
}
|
||||
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
/* Drop older cached frame */
|
||||
if (old_flogi_resp)
|
||||
dev_kfree_skb_irq(fp_skb(old_flogi_resp));
|
||||
|
||||
/*
|
||||
* send flogi reg request to firmware, this will put the fnic in
|
||||
* in FC mode
|
||||
*/
|
||||
ret = fnic_flogi_reg_handler(fnic);
|
||||
|
||||
if (ret < 0) {
|
||||
int free_fp = 1;
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
/*
|
||||
* free the frame is some other thread is not
|
||||
* pointing to it
|
||||
*/
|
||||
if (fnic->flogi_resp != fp)
|
||||
free_fp = 0;
|
||||
else
|
||||
fnic->flogi_resp = NULL;
|
||||
|
||||
if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE)
|
||||
fnic->state = FNIC_IN_ETH_MODE;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
if (free_fp)
|
||||
dev_kfree_skb_irq(fp_skb(fp));
|
||||
}
|
||||
|
||||
handle_flogi_resp_end:
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Returns 1 for a response that matches cached flogi oxid */
|
||||
static inline int is_matching_flogi_resp_frame(struct fnic *fnic,
|
||||
struct fc_frame *fp)
|
||||
{
|
||||
struct fc_frame_header *fh;
|
||||
int ret = 0;
|
||||
u32 f_ctl;
|
||||
|
||||
fh = fc_frame_header_get(fp);
|
||||
f_ctl = ntoh24(fh->fh_f_ctl);
|
||||
|
||||
if (fnic->flogi_oxid == ntohs(fh->fh_ox_id) &&
|
||||
fh->fh_r_ctl == FC_RCTL_ELS_REP &&
|
||||
(f_ctl & (FC_FC_EX_CTX | FC_FC_SEQ_CTX)) == FC_FC_EX_CTX &&
|
||||
fh->fh_type == FC_TYPE_ELS)
|
||||
ret = 1;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc
|
||||
*cq_desc, struct vnic_rq_buf *buf,
|
||||
int skipped __attribute__((unused)),
|
||||
void *opaque)
|
||||
{
|
||||
struct fnic *fnic = vnic_dev_priv(rq->vdev);
|
||||
struct sk_buff *skb;
|
||||
struct fc_frame *fp;
|
||||
unsigned int eth_hdrs_stripped;
|
||||
u8 type, color, eop, sop, ingress_port, vlan_stripped;
|
||||
u8 fcoe = 0, fcoe_sof, fcoe_eof;
|
||||
u8 fcoe_fc_crc_ok = 1, fcoe_enc_error = 0;
|
||||
u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
|
||||
u8 ipv6, ipv4, ipv4_fragment, rss_type, csum_not_calc;
|
||||
u8 fcs_ok = 1, packet_error = 0;
|
||||
u16 q_number, completed_index, bytes_written = 0, vlan, checksum;
|
||||
u32 rss_hash;
|
||||
u16 exchange_id, tmpl;
|
||||
u8 sof = 0;
|
||||
u8 eof = 0;
|
||||
u32 fcp_bytes_written = 0;
|
||||
unsigned long flags;
|
||||
|
||||
pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
|
||||
PCI_DMA_FROMDEVICE);
|
||||
skb = buf->os_buf;
|
||||
buf->os_buf = NULL;
|
||||
|
||||
cq_desc_dec(cq_desc, &type, &color, &q_number, &completed_index);
|
||||
if (type == CQ_DESC_TYPE_RQ_FCP) {
|
||||
cq_fcp_rq_desc_dec((struct cq_fcp_rq_desc *)cq_desc,
|
||||
&type, &color, &q_number, &completed_index,
|
||||
&eop, &sop, &fcoe_fc_crc_ok, &exchange_id,
|
||||
&tmpl, &fcp_bytes_written, &sof, &eof,
|
||||
&ingress_port, &packet_error,
|
||||
&fcoe_enc_error, &fcs_ok, &vlan_stripped,
|
||||
&vlan);
|
||||
eth_hdrs_stripped = 1;
|
||||
|
||||
} else if (type == CQ_DESC_TYPE_RQ_ENET) {
|
||||
cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc,
|
||||
&type, &color, &q_number, &completed_index,
|
||||
&ingress_port, &fcoe, &eop, &sop,
|
||||
&rss_type, &csum_not_calc, &rss_hash,
|
||||
&bytes_written, &packet_error,
|
||||
&vlan_stripped, &vlan, &checksum,
|
||||
&fcoe_sof, &fcoe_fc_crc_ok,
|
||||
&fcoe_enc_error, &fcoe_eof,
|
||||
&tcp_udp_csum_ok, &udp, &tcp,
|
||||
&ipv4_csum_ok, &ipv6, &ipv4,
|
||||
&ipv4_fragment, &fcs_ok);
|
||||
eth_hdrs_stripped = 0;
|
||||
|
||||
} else {
|
||||
/* wrong CQ type*/
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"fnic rq_cmpl wrong cq type x%x\n", type);
|
||||
goto drop;
|
||||
}
|
||||
|
||||
if (!fcs_ok || packet_error || !fcoe_fc_crc_ok || fcoe_enc_error) {
|
||||
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"fnic rq_cmpl fcoe x%x fcsok x%x"
|
||||
" pkterr x%x fcoe_fc_crc_ok x%x, fcoe_enc_err"
|
||||
" x%x\n",
|
||||
fcoe, fcs_ok, packet_error,
|
||||
fcoe_fc_crc_ok, fcoe_enc_error);
|
||||
goto drop;
|
||||
}
|
||||
|
||||
if (eth_hdrs_stripped)
|
||||
fnic_import_rq_fc_frame(skb, fcp_bytes_written, sof, eof);
|
||||
else if (fnic_import_rq_eth_pkt(skb, bytes_written))
|
||||
goto drop;
|
||||
|
||||
fp = (struct fc_frame *)skb;
|
||||
|
||||
/*
|
||||
* If frame is an ELS response that matches the cached FLOGI OX_ID,
|
||||
* and is accept, issue flogi_reg_request copy wq request to firmware
|
||||
* to register the S_ID and determine whether FC_OUI mode or GW mode.
|
||||
*/
|
||||
if (is_matching_flogi_resp_frame(fnic, fp)) {
|
||||
if (!eth_hdrs_stripped) {
|
||||
if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
|
||||
fnic_handle_flogi_resp(fnic, fp);
|
||||
return;
|
||||
}
|
||||
/*
|
||||
* Recd. Flogi reject. No point registering
|
||||
* with fw, but forward to libFC
|
||||
*/
|
||||
goto forward;
|
||||
}
|
||||
goto drop;
|
||||
}
|
||||
if (!eth_hdrs_stripped)
|
||||
goto drop;
|
||||
|
||||
forward:
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
if (fnic->stop_rx_link_events) {
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
goto drop;
|
||||
}
|
||||
/* Use fr_flags to indicate whether succ. flogi resp or not */
|
||||
fr_flags(fp) = 0;
|
||||
fr_dev(fp) = fnic->lport;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
skb_queue_tail(&fnic->frame_queue, skb);
|
||||
queue_work(fnic_event_queue, &fnic->frame_work);
|
||||
|
||||
return;
|
||||
drop:
|
||||
dev_kfree_skb_irq(skb);
|
||||
}
|
||||
|
||||
static int fnic_rq_cmpl_handler_cont(struct vnic_dev *vdev,
|
||||
struct cq_desc *cq_desc, u8 type,
|
||||
u16 q_number, u16 completed_index,
|
||||
void *opaque)
|
||||
{
|
||||
struct fnic *fnic = vnic_dev_priv(vdev);
|
||||
|
||||
vnic_rq_service(&fnic->rq[q_number], cq_desc, completed_index,
|
||||
VNIC_RQ_RETURN_DESC, fnic_rq_cmpl_frame_recv,
|
||||
NULL);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int fnic_rq_cmpl_handler(struct fnic *fnic, int rq_work_to_do)
|
||||
{
|
||||
unsigned int tot_rq_work_done = 0, cur_work_done;
|
||||
unsigned int i;
|
||||
int err;
|
||||
|
||||
for (i = 0; i < fnic->rq_count; i++) {
|
||||
cur_work_done = vnic_cq_service(&fnic->cq[i], rq_work_to_do,
|
||||
fnic_rq_cmpl_handler_cont,
|
||||
NULL);
|
||||
if (cur_work_done) {
|
||||
err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
|
||||
if (err)
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"fnic_alloc_rq_frame cant alloc"
|
||||
" frame\n");
|
||||
}
|
||||
tot_rq_work_done += cur_work_done;
|
||||
}
|
||||
|
||||
return tot_rq_work_done;
|
||||
}
|
||||
|
||||
/*
|
||||
* This function is called once at init time to allocate and fill RQ
|
||||
* buffers. Subsequently, it is called in the interrupt context after RQ
|
||||
* buffer processing to replenish the buffers in the RQ
|
||||
*/
|
||||
int fnic_alloc_rq_frame(struct vnic_rq *rq)
|
||||
{
|
||||
struct fnic *fnic = vnic_dev_priv(rq->vdev);
|
||||
struct sk_buff *skb;
|
||||
u16 len;
|
||||
dma_addr_t pa;
|
||||
|
||||
len = FC_FRAME_HEADROOM + FC_MAX_FRAME + FC_FRAME_TAILROOM;
|
||||
skb = dev_alloc_skb(len);
|
||||
if (!skb) {
|
||||
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"Unable to allocate RQ sk_buff\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
skb_reset_mac_header(skb);
|
||||
skb_reset_transport_header(skb);
|
||||
skb_reset_network_header(skb);
|
||||
skb_put(skb, len);
|
||||
pa = pci_map_single(fnic->pdev, skb->data, len, PCI_DMA_FROMDEVICE);
|
||||
fnic_queue_rq_desc(rq, skb, pa, len);
|
||||
return 0;
|
||||
}
|
||||
|
||||
void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
|
||||
{
|
||||
struct fc_frame *fp = buf->os_buf;
|
||||
struct fnic *fnic = vnic_dev_priv(rq->vdev);
|
||||
|
||||
pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
|
||||
PCI_DMA_FROMDEVICE);
|
||||
|
||||
dev_kfree_skb(fp_skb(fp));
|
||||
buf->os_buf = NULL;
|
||||
}
|
||||
|
||||
static inline int is_flogi_frame(struct fc_frame_header *fh)
|
||||
{
|
||||
return fh->fh_r_ctl == FC_RCTL_ELS_REQ && *(u8 *)(fh + 1) == ELS_FLOGI;
|
||||
}
|
||||
|
||||
int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
|
||||
{
|
||||
struct vnic_wq *wq = &fnic->wq[0];
|
||||
struct sk_buff *skb;
|
||||
dma_addr_t pa;
|
||||
struct ethhdr *eth_hdr;
|
||||
struct vlan_ethhdr *vlan_hdr;
|
||||
struct fcoe_hdr *fcoe_hdr;
|
||||
struct fc_frame_header *fh;
|
||||
u32 tot_len, eth_hdr_len;
|
||||
int ret = 0;
|
||||
unsigned long flags;
|
||||
|
||||
fh = fc_frame_header_get(fp);
|
||||
skb = fp_skb(fp);
|
||||
|
||||
if (!fnic->vlan_hw_insert) {
|
||||
eth_hdr_len = sizeof(*vlan_hdr) + sizeof(*fcoe_hdr);
|
||||
vlan_hdr = (struct vlan_ethhdr *)skb_push(skb, eth_hdr_len);
|
||||
eth_hdr = (struct ethhdr *)vlan_hdr;
|
||||
vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
|
||||
vlan_hdr->h_vlan_encapsulated_proto = htons(ETH_P_FCOE);
|
||||
vlan_hdr->h_vlan_TCI = htons(fnic->vlan_id);
|
||||
fcoe_hdr = (struct fcoe_hdr *)(vlan_hdr + 1);
|
||||
} else {
|
||||
eth_hdr_len = sizeof(*eth_hdr) + sizeof(*fcoe_hdr);
|
||||
eth_hdr = (struct ethhdr *)skb_push(skb, eth_hdr_len);
|
||||
eth_hdr->h_proto = htons(ETH_P_FCOE);
|
||||
fcoe_hdr = (struct fcoe_hdr *)(eth_hdr + 1);
|
||||
}
|
||||
|
||||
if (is_flogi_frame(fh)) {
|
||||
fc_fcoe_set_mac(eth_hdr->h_dest, fh->fh_d_id);
|
||||
memcpy(eth_hdr->h_source, fnic->mac_addr, ETH_ALEN);
|
||||
} else {
|
||||
if (fnic->fcoui_mode)
|
||||
fc_fcoe_set_mac(eth_hdr->h_dest, fh->fh_d_id);
|
||||
else
|
||||
memcpy(eth_hdr->h_dest, fnic->dest_addr, ETH_ALEN);
|
||||
memcpy(eth_hdr->h_source, fnic->data_src_addr, ETH_ALEN);
|
||||
}
|
||||
|
||||
tot_len = skb->len;
|
||||
BUG_ON(tot_len % 4);
|
||||
|
||||
memset(fcoe_hdr, 0, sizeof(*fcoe_hdr));
|
||||
fcoe_hdr->fcoe_sof = fr_sof(fp);
|
||||
if (FC_FCOE_VER)
|
||||
FC_FCOE_ENCAPS_VER(fcoe_hdr, FC_FCOE_VER);
|
||||
|
||||
pa = pci_map_single(fnic->pdev, eth_hdr, tot_len, PCI_DMA_TODEVICE);
|
||||
|
||||
spin_lock_irqsave(&fnic->wq_lock[0], flags);
|
||||
|
||||
if (!vnic_wq_desc_avail(wq)) {
|
||||
pci_unmap_single(fnic->pdev, pa,
|
||||
tot_len, PCI_DMA_TODEVICE);
|
||||
ret = -1;
|
||||
goto fnic_send_frame_end;
|
||||
}
|
||||
|
||||
fnic_queue_wq_desc(wq, skb, pa, tot_len, fr_eof(fp),
|
||||
fnic->vlan_hw_insert, fnic->vlan_id, 1, 1, 1);
|
||||
fnic_send_frame_end:
|
||||
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
|
||||
|
||||
if (ret)
|
||||
dev_kfree_skb_any(fp_skb(fp));
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* fnic_send
|
||||
* Routine to send a raw frame
|
||||
*/
|
||||
int fnic_send(struct fc_lport *lp, struct fc_frame *fp)
|
||||
{
|
||||
struct fnic *fnic = lport_priv(lp);
|
||||
struct fc_frame_header *fh;
|
||||
int ret = 0;
|
||||
enum fnic_state old_state;
|
||||
unsigned long flags;
|
||||
struct fc_frame *old_flogi = NULL;
|
||||
struct fc_frame *old_flogi_resp = NULL;
|
||||
|
||||
if (fnic->in_remove) {
|
||||
dev_kfree_skb(fp_skb(fp));
|
||||
ret = -1;
|
||||
goto fnic_send_end;
|
||||
}
|
||||
|
||||
fh = fc_frame_header_get(fp);
|
||||
/* if not an Flogi frame, send it out, this is the common case */
|
||||
if (!is_flogi_frame(fh))
|
||||
return fnic_send_frame(fnic, fp);
|
||||
|
||||
/* Flogi frame, now enter the state machine */
|
||||
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
again:
|
||||
/* Get any old cached frames, free them after dropping lock */
|
||||
old_flogi = fnic->flogi;
|
||||
fnic->flogi = NULL;
|
||||
old_flogi_resp = fnic->flogi_resp;
|
||||
fnic->flogi_resp = NULL;
|
||||
|
||||
fnic->flogi_oxid = FC_XID_UNKNOWN;
|
||||
|
||||
old_state = fnic->state;
|
||||
switch (old_state) {
|
||||
case FNIC_IN_FC_MODE:
|
||||
case FNIC_IN_ETH_TRANS_FC_MODE:
|
||||
default:
|
||||
fnic->state = FNIC_IN_FC_TRANS_ETH_MODE;
|
||||
vnic_dev_del_addr(fnic->vdev, fnic->data_src_addr);
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
if (old_flogi) {
|
||||
dev_kfree_skb(fp_skb(old_flogi));
|
||||
old_flogi = NULL;
|
||||
}
|
||||
if (old_flogi_resp) {
|
||||
dev_kfree_skb(fp_skb(old_flogi_resp));
|
||||
old_flogi_resp = NULL;
|
||||
}
|
||||
|
||||
ret = fnic_fw_reset_handler(fnic);
|
||||
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
if (fnic->state != FNIC_IN_FC_TRANS_ETH_MODE)
|
||||
goto again;
|
||||
if (ret) {
|
||||
fnic->state = old_state;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
dev_kfree_skb(fp_skb(fp));
|
||||
goto fnic_send_end;
|
||||
}
|
||||
old_flogi = fnic->flogi;
|
||||
fnic->flogi = fp;
|
||||
fnic->flogi_oxid = ntohs(fh->fh_ox_id);
|
||||
old_flogi_resp = fnic->flogi_resp;
|
||||
fnic->flogi_resp = NULL;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
break;
|
||||
|
||||
case FNIC_IN_FC_TRANS_ETH_MODE:
|
||||
/*
|
||||
* A reset is pending with the firmware. Store the flogi
|
||||
* and its oxid. The transition out of this state happens
|
||||
* only when Firmware completes the reset, either with
|
||||
* success or failed. If success, transition to
|
||||
* FNIC_IN_ETH_MODE, if fail, then transition to
|
||||
* FNIC_IN_FC_MODE
|
||||
*/
|
||||
fnic->flogi = fp;
|
||||
fnic->flogi_oxid = ntohs(fh->fh_ox_id);
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
break;
|
||||
|
||||
case FNIC_IN_ETH_MODE:
|
||||
/*
|
||||
* The fw/hw is already in eth mode. Store the oxid,
|
||||
* and send the flogi frame out. The transition out of this
|
||||
* state happens only we receive flogi response from the
|
||||
* network, and the oxid matches the cached oxid when the
|
||||
* flogi frame was sent out. If they match, then we issue
|
||||
* a flogi_reg request and transition to state
|
||||
* FNIC_IN_ETH_TRANS_FC_MODE
|
||||
*/
|
||||
fnic->flogi_oxid = ntohs(fh->fh_ox_id);
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
ret = fnic_send_frame(fnic, fp);
|
||||
break;
|
||||
}
|
||||
|
||||
fnic_send_end:
|
||||
if (old_flogi)
|
||||
dev_kfree_skb(fp_skb(old_flogi));
|
||||
if (old_flogi_resp)
|
||||
dev_kfree_skb(fp_skb(old_flogi_resp));
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void fnic_wq_complete_frame_send(struct vnic_wq *wq,
|
||||
struct cq_desc *cq_desc,
|
||||
struct vnic_wq_buf *buf, void *opaque)
|
||||
{
|
||||
struct sk_buff *skb = buf->os_buf;
|
||||
struct fc_frame *fp = (struct fc_frame *)skb;
|
||||
struct fnic *fnic = vnic_dev_priv(wq->vdev);
|
||||
|
||||
pci_unmap_single(fnic->pdev, buf->dma_addr,
|
||||
buf->len, PCI_DMA_TODEVICE);
|
||||
dev_kfree_skb_irq(fp_skb(fp));
|
||||
buf->os_buf = NULL;
|
||||
}
|
||||
|
||||
static int fnic_wq_cmpl_handler_cont(struct vnic_dev *vdev,
|
||||
struct cq_desc *cq_desc, u8 type,
|
||||
u16 q_number, u16 completed_index,
|
||||
void *opaque)
|
||||
{
|
||||
struct fnic *fnic = vnic_dev_priv(vdev);
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&fnic->wq_lock[q_number], flags);
|
||||
vnic_wq_service(&fnic->wq[q_number], cq_desc, completed_index,
|
||||
fnic_wq_complete_frame_send, NULL);
|
||||
spin_unlock_irqrestore(&fnic->wq_lock[q_number], flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int fnic_wq_cmpl_handler(struct fnic *fnic, int work_to_do)
|
||||
{
|
||||
unsigned int wq_work_done = 0;
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < fnic->raw_wq_count; i++) {
|
||||
wq_work_done += vnic_cq_service(&fnic->cq[fnic->rq_count+i],
|
||||
work_to_do,
|
||||
fnic_wq_cmpl_handler_cont,
|
||||
NULL);
|
||||
}
|
||||
|
||||
return wq_work_done;
|
||||
}
|
||||
|
||||
|
||||
void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
|
||||
{
|
||||
struct fc_frame *fp = buf->os_buf;
|
||||
struct fnic *fnic = vnic_dev_priv(wq->vdev);
|
||||
|
||||
pci_unmap_single(fnic->pdev, buf->dma_addr,
|
||||
buf->len, PCI_DMA_TODEVICE);
|
||||
|
||||
dev_kfree_skb(fp_skb(fp));
|
||||
buf->os_buf = NULL;
|
||||
}
|
67
drivers/scsi/fnic/fnic_io.h
Normal file
67
drivers/scsi/fnic/fnic_io.h
Normal file
|
@ -0,0 +1,67 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _FNIC_IO_H_
|
||||
#define _FNIC_IO_H_
|
||||
|
||||
#include <scsi/fc/fc_fcp.h>
|
||||
|
||||
#define FNIC_DFLT_SG_DESC_CNT 32
|
||||
#define FNIC_MAX_SG_DESC_CNT 1024 /* Maximum descriptors per sgl */
|
||||
#define FNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */
|
||||
|
||||
struct host_sg_desc {
|
||||
__le64 addr;
|
||||
__le32 len;
|
||||
u32 _resvd;
|
||||
};
|
||||
|
||||
struct fnic_dflt_sgl_list {
|
||||
struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
|
||||
};
|
||||
|
||||
struct fnic_sgl_list {
|
||||
struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
|
||||
};
|
||||
|
||||
enum fnic_sgl_list_type {
|
||||
FNIC_SGL_CACHE_DFLT = 0, /* cache with default size sgl */
|
||||
FNIC_SGL_CACHE_MAX, /* cache with max size sgl */
|
||||
FNIC_SGL_NUM_CACHES /* number of sgl caches */
|
||||
};
|
||||
|
||||
enum fnic_ioreq_state {
|
||||
FNIC_IOREQ_CMD_PENDING = 0,
|
||||
FNIC_IOREQ_ABTS_PENDING,
|
||||
FNIC_IOREQ_ABTS_COMPLETE,
|
||||
FNIC_IOREQ_CMD_COMPLETE,
|
||||
};
|
||||
|
||||
struct fnic_io_req {
|
||||
struct host_sg_desc *sgl_list; /* sgl list */
|
||||
void *sgl_list_alloc; /* sgl list address used for free */
|
||||
dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
|
||||
dma_addr_t sgl_list_pa; /* dma address for sgl list */
|
||||
u16 sgl_cnt;
|
||||
u8 sgl_type; /* device DMA descriptor list type */
|
||||
u8 io_completed:1; /* set to 1 when fw completes IO */
|
||||
u32 port_id; /* remote port DID */
|
||||
struct completion *abts_done; /* completion for abts */
|
||||
struct completion *dr_done; /* completion for device reset */
|
||||
};
|
||||
|
||||
#endif /* _FNIC_IO_H_ */
|
332
drivers/scsi/fnic/fnic_isr.c
Normal file
332
drivers/scsi/fnic/fnic_isr.c
Normal file
|
@ -0,0 +1,332 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#include <linux/string.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <scsi/libfc.h>
|
||||
#include <scsi/fc_frame.h>
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_intr.h"
|
||||
#include "vnic_stats.h"
|
||||
#include "fnic_io.h"
|
||||
#include "fnic.h"
|
||||
|
||||
static irqreturn_t fnic_isr_legacy(int irq, void *data)
|
||||
{
|
||||
struct fnic *fnic = data;
|
||||
u32 pba;
|
||||
unsigned long work_done = 0;
|
||||
|
||||
pba = vnic_intr_legacy_pba(fnic->legacy_pba);
|
||||
if (!pba)
|
||||
return IRQ_NONE;
|
||||
|
||||
if (pba & (1 << FNIC_INTX_NOTIFY)) {
|
||||
vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_NOTIFY]);
|
||||
fnic_handle_link_event(fnic);
|
||||
}
|
||||
|
||||
if (pba & (1 << FNIC_INTX_ERR)) {
|
||||
vnic_intr_return_all_credits(&fnic->intr[FNIC_INTX_ERR]);
|
||||
fnic_log_q_error(fnic);
|
||||
}
|
||||
|
||||
if (pba & (1 << FNIC_INTX_WQ_RQ_COPYWQ)) {
|
||||
work_done += fnic_wq_copy_cmpl_handler(fnic, 8);
|
||||
work_done += fnic_wq_cmpl_handler(fnic, 4);
|
||||
work_done += fnic_rq_cmpl_handler(fnic, 4);
|
||||
|
||||
vnic_intr_return_credits(&fnic->intr[FNIC_INTX_WQ_RQ_COPYWQ],
|
||||
work_done,
|
||||
1 /* unmask intr */,
|
||||
1 /* reset intr timer */);
|
||||
}
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t fnic_isr_msi(int irq, void *data)
|
||||
{
|
||||
struct fnic *fnic = data;
|
||||
unsigned long work_done = 0;
|
||||
|
||||
work_done += fnic_wq_copy_cmpl_handler(fnic, 8);
|
||||
work_done += fnic_wq_cmpl_handler(fnic, 4);
|
||||
work_done += fnic_rq_cmpl_handler(fnic, 4);
|
||||
|
||||
vnic_intr_return_credits(&fnic->intr[0],
|
||||
work_done,
|
||||
1 /* unmask intr */,
|
||||
1 /* reset intr timer */);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t fnic_isr_msix_rq(int irq, void *data)
|
||||
{
|
||||
struct fnic *fnic = data;
|
||||
unsigned long rq_work_done = 0;
|
||||
|
||||
rq_work_done = fnic_rq_cmpl_handler(fnic, 4);
|
||||
vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_RQ],
|
||||
rq_work_done,
|
||||
1 /* unmask intr */,
|
||||
1 /* reset intr timer */);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t fnic_isr_msix_wq(int irq, void *data)
|
||||
{
|
||||
struct fnic *fnic = data;
|
||||
unsigned long wq_work_done = 0;
|
||||
|
||||
wq_work_done = fnic_wq_cmpl_handler(fnic, 4);
|
||||
vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_WQ],
|
||||
wq_work_done,
|
||||
1 /* unmask intr */,
|
||||
1 /* reset intr timer */);
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t fnic_isr_msix_wq_copy(int irq, void *data)
|
||||
{
|
||||
struct fnic *fnic = data;
|
||||
unsigned long wq_copy_work_done = 0;
|
||||
|
||||
wq_copy_work_done = fnic_wq_copy_cmpl_handler(fnic, 8);
|
||||
vnic_intr_return_credits(&fnic->intr[FNIC_MSIX_WQ_COPY],
|
||||
wq_copy_work_done,
|
||||
1 /* unmask intr */,
|
||||
1 /* reset intr timer */);
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t fnic_isr_msix_err_notify(int irq, void *data)
|
||||
{
|
||||
struct fnic *fnic = data;
|
||||
|
||||
vnic_intr_return_all_credits(&fnic->intr[FNIC_MSIX_ERR_NOTIFY]);
|
||||
fnic_log_q_error(fnic);
|
||||
fnic_handle_link_event(fnic);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
void fnic_free_intr(struct fnic *fnic)
|
||||
{
|
||||
int i;
|
||||
|
||||
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
|
||||
case VNIC_DEV_INTR_MODE_INTX:
|
||||
case VNIC_DEV_INTR_MODE_MSI:
|
||||
free_irq(fnic->pdev->irq, fnic);
|
||||
break;
|
||||
|
||||
case VNIC_DEV_INTR_MODE_MSIX:
|
||||
for (i = 0; i < ARRAY_SIZE(fnic->msix); i++)
|
||||
if (fnic->msix[i].requested)
|
||||
free_irq(fnic->msix_entry[i].vector,
|
||||
fnic->msix[i].devid);
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
int fnic_request_intr(struct fnic *fnic)
|
||||
{
|
||||
int err = 0;
|
||||
int i;
|
||||
|
||||
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
|
||||
|
||||
case VNIC_DEV_INTR_MODE_INTX:
|
||||
err = request_irq(fnic->pdev->irq, &fnic_isr_legacy,
|
||||
IRQF_SHARED, DRV_NAME, fnic);
|
||||
break;
|
||||
|
||||
case VNIC_DEV_INTR_MODE_MSI:
|
||||
err = request_irq(fnic->pdev->irq, &fnic_isr_msi,
|
||||
0, fnic->name, fnic);
|
||||
break;
|
||||
|
||||
case VNIC_DEV_INTR_MODE_MSIX:
|
||||
|
||||
sprintf(fnic->msix[FNIC_MSIX_RQ].devname,
|
||||
"%.11s-fcs-rq", fnic->name);
|
||||
fnic->msix[FNIC_MSIX_RQ].isr = fnic_isr_msix_rq;
|
||||
fnic->msix[FNIC_MSIX_RQ].devid = fnic;
|
||||
|
||||
sprintf(fnic->msix[FNIC_MSIX_WQ].devname,
|
||||
"%.11s-fcs-wq", fnic->name);
|
||||
fnic->msix[FNIC_MSIX_WQ].isr = fnic_isr_msix_wq;
|
||||
fnic->msix[FNIC_MSIX_WQ].devid = fnic;
|
||||
|
||||
sprintf(fnic->msix[FNIC_MSIX_WQ_COPY].devname,
|
||||
"%.11s-scsi-wq", fnic->name);
|
||||
fnic->msix[FNIC_MSIX_WQ_COPY].isr = fnic_isr_msix_wq_copy;
|
||||
fnic->msix[FNIC_MSIX_WQ_COPY].devid = fnic;
|
||||
|
||||
sprintf(fnic->msix[FNIC_MSIX_ERR_NOTIFY].devname,
|
||||
"%.11s-err-notify", fnic->name);
|
||||
fnic->msix[FNIC_MSIX_ERR_NOTIFY].isr =
|
||||
fnic_isr_msix_err_notify;
|
||||
fnic->msix[FNIC_MSIX_ERR_NOTIFY].devid = fnic;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(fnic->msix); i++) {
|
||||
err = request_irq(fnic->msix_entry[i].vector,
|
||||
fnic->msix[i].isr, 0,
|
||||
fnic->msix[i].devname,
|
||||
fnic->msix[i].devid);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"MSIX: request_irq"
|
||||
" failed %d\n", err);
|
||||
fnic_free_intr(fnic);
|
||||
break;
|
||||
}
|
||||
fnic->msix[i].requested = 1;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
int fnic_set_intr_mode(struct fnic *fnic)
|
||||
{
|
||||
unsigned int n = ARRAY_SIZE(fnic->rq);
|
||||
unsigned int m = ARRAY_SIZE(fnic->wq);
|
||||
unsigned int o = ARRAY_SIZE(fnic->wq_copy);
|
||||
unsigned int i;
|
||||
|
||||
/*
|
||||
* Set interrupt mode (INTx, MSI, MSI-X) depending
|
||||
* system capabilities.
|
||||
*
|
||||
* Try MSI-X first
|
||||
*
|
||||
* We need n RQs, m WQs, o Copy WQs, n+m+o CQs, and n+m+o+1 INTRs
|
||||
* (last INTR is used for WQ/RQ errors and notification area)
|
||||
*/
|
||||
|
||||
BUG_ON(ARRAY_SIZE(fnic->msix_entry) < n + m + o + 1);
|
||||
for (i = 0; i < n + m + o + 1; i++)
|
||||
fnic->msix_entry[i].entry = i;
|
||||
|
||||
if (fnic->rq_count >= n &&
|
||||
fnic->raw_wq_count >= m &&
|
||||
fnic->wq_copy_count >= o &&
|
||||
fnic->cq_count >= n + m + o) {
|
||||
if (!pci_enable_msix(fnic->pdev, fnic->msix_entry,
|
||||
n + m + o + 1)) {
|
||||
fnic->rq_count = n;
|
||||
fnic->raw_wq_count = m;
|
||||
fnic->wq_copy_count = o;
|
||||
fnic->wq_count = m + o;
|
||||
fnic->cq_count = n + m + o;
|
||||
fnic->intr_count = n + m + o + 1;
|
||||
fnic->err_intr_offset = FNIC_MSIX_ERR_NOTIFY;
|
||||
|
||||
FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"Using MSI-X Interrupts\n");
|
||||
vnic_dev_set_intr_mode(fnic->vdev,
|
||||
VNIC_DEV_INTR_MODE_MSIX);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Next try MSI
|
||||
* We need 1 RQ, 1 WQ, 1 WQ_COPY, 3 CQs, and 1 INTR
|
||||
*/
|
||||
if (fnic->rq_count >= 1 &&
|
||||
fnic->raw_wq_count >= 1 &&
|
||||
fnic->wq_copy_count >= 1 &&
|
||||
fnic->cq_count >= 3 &&
|
||||
fnic->intr_count >= 1 &&
|
||||
!pci_enable_msi(fnic->pdev)) {
|
||||
|
||||
fnic->rq_count = 1;
|
||||
fnic->raw_wq_count = 1;
|
||||
fnic->wq_copy_count = 1;
|
||||
fnic->wq_count = 2;
|
||||
fnic->cq_count = 3;
|
||||
fnic->intr_count = 1;
|
||||
fnic->err_intr_offset = 0;
|
||||
|
||||
FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"Using MSI Interrupts\n");
|
||||
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_MSI);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Next try INTx
|
||||
* We need 1 RQ, 1 WQ, 1 WQ_COPY, 3 CQs, and 3 INTRs
|
||||
* 1 INTR is used for all 3 queues, 1 INTR for queue errors
|
||||
* 1 INTR for notification area
|
||||
*/
|
||||
|
||||
if (fnic->rq_count >= 1 &&
|
||||
fnic->raw_wq_count >= 1 &&
|
||||
fnic->wq_copy_count >= 1 &&
|
||||
fnic->cq_count >= 3 &&
|
||||
fnic->intr_count >= 3) {
|
||||
|
||||
fnic->rq_count = 1;
|
||||
fnic->raw_wq_count = 1;
|
||||
fnic->wq_copy_count = 1;
|
||||
fnic->cq_count = 3;
|
||||
fnic->intr_count = 3;
|
||||
|
||||
FNIC_ISR_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"Using Legacy Interrupts\n");
|
||||
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_INTX);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
void fnic_clear_intr_mode(struct fnic *fnic)
|
||||
{
|
||||
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
|
||||
case VNIC_DEV_INTR_MODE_MSIX:
|
||||
pci_disable_msix(fnic->pdev);
|
||||
break;
|
||||
case VNIC_DEV_INTR_MODE_MSI:
|
||||
pci_disable_msi(fnic->pdev);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
vnic_dev_set_intr_mode(fnic->vdev, VNIC_DEV_INTR_MODE_INTX);
|
||||
}
|
||||
|
942
drivers/scsi/fnic/fnic_main.c
Normal file
942
drivers/scsi/fnic/fnic_main.c
Normal file
|
@ -0,0 +1,942 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#include <linux/module.h>
|
||||
#include <linux/mempool.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/skbuff.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <scsi/scsi_host.h>
|
||||
#include <scsi/scsi_transport.h>
|
||||
#include <scsi/scsi_transport_fc.h>
|
||||
#include <scsi/scsi_tcq.h>
|
||||
#include <scsi/libfc.h>
|
||||
#include <scsi/fc_frame.h>
|
||||
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_intr.h"
|
||||
#include "vnic_stats.h"
|
||||
#include "fnic_io.h"
|
||||
#include "fnic.h"
|
||||
|
||||
#define PCI_DEVICE_ID_CISCO_FNIC 0x0045
|
||||
|
||||
/* Timer to poll notification area for events. Used for MSI interrupts */
|
||||
#define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
|
||||
|
||||
static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
|
||||
static struct kmem_cache *fnic_io_req_cache;
|
||||
LIST_HEAD(fnic_list);
|
||||
DEFINE_SPINLOCK(fnic_list_lock);
|
||||
|
||||
/* Supported devices by fnic module */
|
||||
static struct pci_device_id fnic_id_table[] = {
|
||||
{ PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
|
||||
{ 0, }
|
||||
};
|
||||
|
||||
MODULE_DESCRIPTION(DRV_DESCRIPTION);
|
||||
MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
|
||||
"Joseph R. Eykholt <jeykholt@cisco.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_VERSION(DRV_VERSION);
|
||||
MODULE_DEVICE_TABLE(pci, fnic_id_table);
|
||||
|
||||
unsigned int fnic_log_level;
|
||||
module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
|
||||
MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
|
||||
|
||||
|
||||
static struct libfc_function_template fnic_transport_template = {
|
||||
.frame_send = fnic_send,
|
||||
.fcp_abort_io = fnic_empty_scsi_cleanup,
|
||||
.fcp_cleanup = fnic_empty_scsi_cleanup,
|
||||
.exch_mgr_reset = fnic_exch_mgr_reset
|
||||
};
|
||||
|
||||
static int fnic_slave_alloc(struct scsi_device *sdev)
|
||||
{
|
||||
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
|
||||
struct fc_lport *lp = shost_priv(sdev->host);
|
||||
struct fnic *fnic = lport_priv(lp);
|
||||
|
||||
sdev->tagged_supported = 1;
|
||||
|
||||
if (!rport || fc_remote_port_chkready(rport))
|
||||
return -ENXIO;
|
||||
|
||||
scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
|
||||
rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct scsi_host_template fnic_host_template = {
|
||||
.module = THIS_MODULE,
|
||||
.name = DRV_NAME,
|
||||
.queuecommand = fnic_queuecommand,
|
||||
.eh_abort_handler = fnic_abort_cmd,
|
||||
.eh_device_reset_handler = fnic_device_reset,
|
||||
.eh_host_reset_handler = fnic_host_reset,
|
||||
.slave_alloc = fnic_slave_alloc,
|
||||
.change_queue_depth = fc_change_queue_depth,
|
||||
.change_queue_type = fc_change_queue_type,
|
||||
.this_id = -1,
|
||||
.cmd_per_lun = 3,
|
||||
.can_queue = FNIC_MAX_IO_REQ,
|
||||
.use_clustering = ENABLE_CLUSTERING,
|
||||
.sg_tablesize = FNIC_MAX_SG_DESC_CNT,
|
||||
.max_sectors = 0xffff,
|
||||
.shost_attrs = fnic_attrs,
|
||||
};
|
||||
|
||||
static void fnic_get_host_speed(struct Scsi_Host *shost);
|
||||
static struct scsi_transport_template *fnic_fc_transport;
|
||||
static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
|
||||
|
||||
static struct fc_function_template fnic_fc_functions = {
|
||||
|
||||
.show_host_node_name = 1,
|
||||
.show_host_port_name = 1,
|
||||
.show_host_supported_classes = 1,
|
||||
.show_host_supported_fc4s = 1,
|
||||
.show_host_active_fc4s = 1,
|
||||
.show_host_maxframe_size = 1,
|
||||
.show_host_port_id = 1,
|
||||
.show_host_supported_speeds = 1,
|
||||
.get_host_speed = fnic_get_host_speed,
|
||||
.show_host_speed = 1,
|
||||
.show_host_port_type = 1,
|
||||
.get_host_port_state = fc_get_host_port_state,
|
||||
.show_host_port_state = 1,
|
||||
.show_host_symbolic_name = 1,
|
||||
.show_rport_maxframe_size = 1,
|
||||
.show_rport_supported_classes = 1,
|
||||
.show_host_fabric_name = 1,
|
||||
.show_starget_node_name = 1,
|
||||
.show_starget_port_name = 1,
|
||||
.show_starget_port_id = 1,
|
||||
.show_rport_dev_loss_tmo = 1,
|
||||
.issue_fc_host_lip = fnic_reset,
|
||||
.get_fc_host_stats = fnic_get_stats,
|
||||
.dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
|
||||
.terminate_rport_io = fnic_terminate_rport_io,
|
||||
};
|
||||
|
||||
static void fnic_get_host_speed(struct Scsi_Host *shost)
|
||||
{
|
||||
struct fc_lport *lp = shost_priv(shost);
|
||||
struct fnic *fnic = lport_priv(lp);
|
||||
u32 port_speed = vnic_dev_port_speed(fnic->vdev);
|
||||
|
||||
/* Add in other values as they get defined in fw */
|
||||
switch (port_speed) {
|
||||
case 10000:
|
||||
fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
|
||||
break;
|
||||
default:
|
||||
fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
|
||||
{
|
||||
int ret;
|
||||
struct fc_lport *lp = shost_priv(host);
|
||||
struct fnic *fnic = lport_priv(lp);
|
||||
struct fc_host_statistics *stats = &lp->host_stats;
|
||||
struct vnic_stats *vs;
|
||||
unsigned long flags;
|
||||
|
||||
if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
|
||||
return stats;
|
||||
fnic->stats_time = jiffies;
|
||||
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
if (ret) {
|
||||
FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
|
||||
"fnic: Get vnic stats failed"
|
||||
" 0x%x", ret);
|
||||
return stats;
|
||||
}
|
||||
vs = fnic->stats;
|
||||
stats->tx_frames = vs->tx.tx_unicast_frames_ok;
|
||||
stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
|
||||
stats->rx_frames = vs->rx.rx_unicast_frames_ok;
|
||||
stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
|
||||
stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
|
||||
stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
|
||||
stats->invalid_crc_count = vs->rx.rx_crc_errors;
|
||||
stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
|
||||
stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
|
||||
stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
|
||||
|
||||
return stats;
|
||||
}
|
||||
|
||||
void fnic_log_q_error(struct fnic *fnic)
|
||||
{
|
||||
unsigned int i;
|
||||
u32 error_status;
|
||||
|
||||
for (i = 0; i < fnic->raw_wq_count; i++) {
|
||||
error_status = ioread32(&fnic->wq[i].ctrl->error_status);
|
||||
if (error_status)
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"WQ[%d] error_status"
|
||||
" %d\n", i, error_status);
|
||||
}
|
||||
|
||||
for (i = 0; i < fnic->rq_count; i++) {
|
||||
error_status = ioread32(&fnic->rq[i].ctrl->error_status);
|
||||
if (error_status)
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"RQ[%d] error_status"
|
||||
" %d\n", i, error_status);
|
||||
}
|
||||
|
||||
for (i = 0; i < fnic->wq_copy_count; i++) {
|
||||
error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
|
||||
if (error_status)
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"CWQ[%d] error_status"
|
||||
" %d\n", i, error_status);
|
||||
}
|
||||
}
|
||||
|
||||
void fnic_handle_link_event(struct fnic *fnic)
|
||||
{
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
if (fnic->stop_rx_link_events) {
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
return;
|
||||
}
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
queue_work(fnic_event_queue, &fnic->link_work);
|
||||
|
||||
}
|
||||
|
||||
static int fnic_notify_set(struct fnic *fnic)
|
||||
{
|
||||
int err;
|
||||
|
||||
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
|
||||
case VNIC_DEV_INTR_MODE_INTX:
|
||||
err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
|
||||
break;
|
||||
case VNIC_DEV_INTR_MODE_MSI:
|
||||
err = vnic_dev_notify_set(fnic->vdev, -1);
|
||||
break;
|
||||
case VNIC_DEV_INTR_MODE_MSIX:
|
||||
err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
|
||||
break;
|
||||
default:
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Interrupt mode should be set up"
|
||||
" before devcmd notify set %d\n",
|
||||
vnic_dev_get_intr_mode(fnic->vdev));
|
||||
err = -1;
|
||||
break;
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static void fnic_notify_timer(unsigned long data)
|
||||
{
|
||||
struct fnic *fnic = (struct fnic *)data;
|
||||
|
||||
fnic_handle_link_event(fnic);
|
||||
mod_timer(&fnic->notify_timer,
|
||||
round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
|
||||
}
|
||||
|
||||
static void fnic_notify_timer_start(struct fnic *fnic)
|
||||
{
|
||||
switch (vnic_dev_get_intr_mode(fnic->vdev)) {
|
||||
case VNIC_DEV_INTR_MODE_MSI:
|
||||
/*
|
||||
* Schedule first timeout immediately. The driver is
|
||||
* initiatialized and ready to look for link up notification
|
||||
*/
|
||||
mod_timer(&fnic->notify_timer, jiffies);
|
||||
break;
|
||||
default:
|
||||
/* Using intr for notification for INTx/MSI-X */
|
||||
break;
|
||||
};
|
||||
}
|
||||
|
||||
static int fnic_dev_wait(struct vnic_dev *vdev,
|
||||
int (*start)(struct vnic_dev *, int),
|
||||
int (*finished)(struct vnic_dev *, int *),
|
||||
int arg)
|
||||
{
|
||||
unsigned long time;
|
||||
int done;
|
||||
int err;
|
||||
|
||||
err = start(vdev, arg);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
/* Wait for func to complete...2 seconds max */
|
||||
time = jiffies + (HZ * 2);
|
||||
do {
|
||||
err = finished(vdev, &done);
|
||||
if (err)
|
||||
return err;
|
||||
if (done)
|
||||
return 0;
|
||||
schedule_timeout_uninterruptible(HZ / 10);
|
||||
} while (time_after(time, jiffies));
|
||||
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
static int fnic_cleanup(struct fnic *fnic)
|
||||
{
|
||||
unsigned int i;
|
||||
int err;
|
||||
unsigned long flags;
|
||||
struct fc_frame *flogi = NULL;
|
||||
struct fc_frame *flogi_resp = NULL;
|
||||
|
||||
vnic_dev_disable(fnic->vdev);
|
||||
for (i = 0; i < fnic->intr_count; i++)
|
||||
vnic_intr_mask(&fnic->intr[i]);
|
||||
|
||||
for (i = 0; i < fnic->rq_count; i++) {
|
||||
err = vnic_rq_disable(&fnic->rq[i]);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
for (i = 0; i < fnic->raw_wq_count; i++) {
|
||||
err = vnic_wq_disable(&fnic->wq[i]);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
for (i = 0; i < fnic->wq_copy_count; i++) {
|
||||
err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
/* Clean up completed IOs and FCS frames */
|
||||
fnic_wq_copy_cmpl_handler(fnic, -1);
|
||||
fnic_wq_cmpl_handler(fnic, -1);
|
||||
fnic_rq_cmpl_handler(fnic, -1);
|
||||
|
||||
/* Clean up the IOs and FCS frames that have not completed */
|
||||
for (i = 0; i < fnic->raw_wq_count; i++)
|
||||
vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
|
||||
for (i = 0; i < fnic->rq_count; i++)
|
||||
vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
|
||||
for (i = 0; i < fnic->wq_copy_count; i++)
|
||||
vnic_wq_copy_clean(&fnic->wq_copy[i],
|
||||
fnic_wq_copy_cleanup_handler);
|
||||
|
||||
for (i = 0; i < fnic->cq_count; i++)
|
||||
vnic_cq_clean(&fnic->cq[i]);
|
||||
for (i = 0; i < fnic->intr_count; i++)
|
||||
vnic_intr_clean(&fnic->intr[i]);
|
||||
|
||||
/*
|
||||
* Remove cached flogi and flogi resp frames if any
|
||||
* These frames are not in any queue, and therefore queue
|
||||
* cleanup does not clean them. So clean them explicitly
|
||||
*/
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
flogi = fnic->flogi;
|
||||
fnic->flogi = NULL;
|
||||
flogi_resp = fnic->flogi_resp;
|
||||
fnic->flogi_resp = NULL;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
if (flogi)
|
||||
dev_kfree_skb(fp_skb(flogi));
|
||||
|
||||
if (flogi_resp)
|
||||
dev_kfree_skb(fp_skb(flogi_resp));
|
||||
|
||||
mempool_destroy(fnic->io_req_pool);
|
||||
for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
|
||||
mempool_destroy(fnic->io_sgl_pool[i]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void fnic_iounmap(struct fnic *fnic)
|
||||
{
|
||||
if (fnic->bar0.vaddr)
|
||||
iounmap(fnic->bar0.vaddr);
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocate element for mempools requiring GFP_DMA flag.
|
||||
* Otherwise, checks in kmem_flagcheck() hit BUG_ON().
|
||||
*/
|
||||
static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data)
|
||||
{
|
||||
struct kmem_cache *mem = pool_data;
|
||||
|
||||
return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA);
|
||||
}
|
||||
|
||||
static int __devinit fnic_probe(struct pci_dev *pdev,
|
||||
const struct pci_device_id *ent)
|
||||
{
|
||||
struct Scsi_Host *host;
|
||||
struct fc_lport *lp;
|
||||
struct fnic *fnic;
|
||||
mempool_t *pool;
|
||||
int err;
|
||||
int i;
|
||||
unsigned long flags;
|
||||
|
||||
/*
|
||||
* Allocate SCSI Host and set up association between host,
|
||||
* local port, and fnic
|
||||
*/
|
||||
host = scsi_host_alloc(&fnic_host_template,
|
||||
sizeof(struct fc_lport) + sizeof(struct fnic));
|
||||
if (!host) {
|
||||
printk(KERN_ERR PFX "Unable to alloc SCSI host\n");
|
||||
err = -ENOMEM;
|
||||
goto err_out;
|
||||
}
|
||||
lp = shost_priv(host);
|
||||
lp->host = host;
|
||||
fnic = lport_priv(lp);
|
||||
fnic->lport = lp;
|
||||
|
||||
snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
|
||||
host->host_no);
|
||||
|
||||
host->transportt = fnic_fc_transport;
|
||||
|
||||
err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Unable to alloc shared tag map\n");
|
||||
goto err_out_free_hba;
|
||||
}
|
||||
|
||||
/* Setup PCI resources */
|
||||
pci_set_drvdata(pdev, fnic);
|
||||
|
||||
fnic->pdev = pdev;
|
||||
|
||||
err = pci_enable_device(pdev);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Cannot enable PCI device, aborting.\n");
|
||||
goto err_out_free_hba;
|
||||
}
|
||||
|
||||
err = pci_request_regions(pdev, DRV_NAME);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Cannot enable PCI resources, aborting\n");
|
||||
goto err_out_disable_device;
|
||||
}
|
||||
|
||||
pci_set_master(pdev);
|
||||
|
||||
/* Query PCI controller on system for DMA addressing
|
||||
* limitation for the device. Try 40-bit first, and
|
||||
* fail to 32-bit.
|
||||
*/
|
||||
err = pci_set_dma_mask(pdev, DMA_40BIT_MASK);
|
||||
if (err) {
|
||||
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"No usable DMA configuration "
|
||||
"aborting\n");
|
||||
goto err_out_release_regions;
|
||||
}
|
||||
err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Unable to obtain 32-bit DMA "
|
||||
"for consistent allocations, aborting.\n");
|
||||
goto err_out_release_regions;
|
||||
}
|
||||
} else {
|
||||
err = pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Unable to obtain 40-bit DMA "
|
||||
"for consistent allocations, aborting.\n");
|
||||
goto err_out_release_regions;
|
||||
}
|
||||
}
|
||||
|
||||
/* Map vNIC resources from BAR0 */
|
||||
if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"BAR0 not memory-map'able, aborting.\n");
|
||||
err = -ENODEV;
|
||||
goto err_out_release_regions;
|
||||
}
|
||||
|
||||
fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
|
||||
fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
|
||||
fnic->bar0.len = pci_resource_len(pdev, 0);
|
||||
|
||||
if (!fnic->bar0.vaddr) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Cannot memory-map BAR0 res hdr, "
|
||||
"aborting.\n");
|
||||
err = -ENODEV;
|
||||
goto err_out_release_regions;
|
||||
}
|
||||
|
||||
fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
|
||||
if (!fnic->vdev) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"vNIC registration failed, "
|
||||
"aborting.\n");
|
||||
err = -ENODEV;
|
||||
goto err_out_iounmap;
|
||||
}
|
||||
|
||||
err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
|
||||
vnic_dev_open_done, 0);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"vNIC dev open failed, aborting.\n");
|
||||
goto err_out_vnic_unregister;
|
||||
}
|
||||
|
||||
err = vnic_dev_init(fnic->vdev, 0);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"vNIC dev init failed, aborting.\n");
|
||||
goto err_out_dev_close;
|
||||
}
|
||||
|
||||
err = vnic_dev_mac_addr(fnic->vdev, fnic->mac_addr);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"vNIC get MAC addr failed \n");
|
||||
goto err_out_dev_close;
|
||||
}
|
||||
|
||||
/* Get vNIC configuration */
|
||||
err = fnic_get_vnic_config(fnic);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Get vNIC configuration failed, "
|
||||
"aborting.\n");
|
||||
goto err_out_dev_close;
|
||||
}
|
||||
host->max_lun = fnic->config.luns_per_tgt;
|
||||
host->max_id = FNIC_MAX_FCP_TARGET;
|
||||
|
||||
fnic_get_res_counts(fnic);
|
||||
|
||||
err = fnic_set_intr_mode(fnic);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Failed to set intr mode, "
|
||||
"aborting.\n");
|
||||
goto err_out_dev_close;
|
||||
}
|
||||
|
||||
err = fnic_request_intr(fnic);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Unable to request irq.\n");
|
||||
goto err_out_clear_intr;
|
||||
}
|
||||
|
||||
err = fnic_alloc_vnic_resources(fnic);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Failed to alloc vNIC resources, "
|
||||
"aborting.\n");
|
||||
goto err_out_free_intr;
|
||||
}
|
||||
|
||||
|
||||
/* initialize all fnic locks */
|
||||
spin_lock_init(&fnic->fnic_lock);
|
||||
|
||||
for (i = 0; i < FNIC_WQ_MAX; i++)
|
||||
spin_lock_init(&fnic->wq_lock[i]);
|
||||
|
||||
for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
|
||||
spin_lock_init(&fnic->wq_copy_lock[i]);
|
||||
fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
|
||||
fnic->fw_ack_recd[i] = 0;
|
||||
fnic->fw_ack_index[i] = -1;
|
||||
}
|
||||
|
||||
for (i = 0; i < FNIC_IO_LOCKS; i++)
|
||||
spin_lock_init(&fnic->io_req_lock[i]);
|
||||
|
||||
fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
|
||||
if (!fnic->io_req_pool)
|
||||
goto err_out_free_resources;
|
||||
|
||||
pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
|
||||
fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
|
||||
if (!pool)
|
||||
goto err_out_free_ioreq_pool;
|
||||
fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
|
||||
|
||||
pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
|
||||
fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
|
||||
if (!pool)
|
||||
goto err_out_free_dflt_pool;
|
||||
fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
|
||||
|
||||
/* setup vlan config, hw inserts vlan header */
|
||||
fnic->vlan_hw_insert = 1;
|
||||
fnic->vlan_id = 0;
|
||||
|
||||
fnic->flogi_oxid = FC_XID_UNKNOWN;
|
||||
fnic->flogi = NULL;
|
||||
fnic->flogi_resp = NULL;
|
||||
fnic->state = FNIC_IN_FC_MODE;
|
||||
|
||||
/* Enable hardware stripping of vlan header on ingress */
|
||||
fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
|
||||
|
||||
/* Setup notification buffer area */
|
||||
err = fnic_notify_set(fnic);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Failed to alloc notify buffer, aborting.\n");
|
||||
goto err_out_free_max_pool;
|
||||
}
|
||||
|
||||
/* Setup notify timer when using MSI interrupts */
|
||||
if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
|
||||
setup_timer(&fnic->notify_timer,
|
||||
fnic_notify_timer, (unsigned long)fnic);
|
||||
|
||||
/* allocate RQ buffers and post them to RQ*/
|
||||
for (i = 0; i < fnic->rq_count; i++) {
|
||||
err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"fnic_alloc_rq_frame can't alloc "
|
||||
"frame\n");
|
||||
goto err_out_free_rq_buf;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialization done with PCI system, hardware, firmware.
|
||||
* Add host to SCSI
|
||||
*/
|
||||
err = scsi_add_host(lp->host, &pdev->dev);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"fnic: scsi_add_host failed...exiting\n");
|
||||
goto err_out_free_rq_buf;
|
||||
}
|
||||
|
||||
/* Start local port initiatialization */
|
||||
|
||||
lp->link_up = 0;
|
||||
lp->tt = fnic_transport_template;
|
||||
|
||||
lp->emp = fc_exch_mgr_alloc(lp, FC_CLASS_3,
|
||||
FCPIO_HOST_EXCH_RANGE_START,
|
||||
FCPIO_HOST_EXCH_RANGE_END);
|
||||
if (!lp->emp) {
|
||||
err = -ENOMEM;
|
||||
goto err_out_remove_scsi_host;
|
||||
}
|
||||
|
||||
lp->max_retry_count = fnic->config.flogi_retries;
|
||||
lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
|
||||
FCP_SPPF_CONF_COMPL);
|
||||
if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
|
||||
lp->service_params |= FCP_SPPF_RETRY;
|
||||
|
||||
lp->boot_time = jiffies;
|
||||
lp->e_d_tov = fnic->config.ed_tov;
|
||||
lp->r_a_tov = fnic->config.ra_tov;
|
||||
lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
|
||||
fc_set_wwnn(lp, fnic->config.node_wwn);
|
||||
fc_set_wwpn(lp, fnic->config.port_wwn);
|
||||
|
||||
fc_exch_init(lp);
|
||||
fc_lport_init(lp);
|
||||
fc_elsct_init(lp);
|
||||
fc_rport_init(lp);
|
||||
fc_disc_init(lp);
|
||||
|
||||
fc_lport_config(lp);
|
||||
|
||||
if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
|
||||
sizeof(struct fc_frame_header))) {
|
||||
err = -EINVAL;
|
||||
goto err_out_free_exch_mgr;
|
||||
}
|
||||
fc_host_maxframe_size(lp->host) = lp->mfs;
|
||||
|
||||
sprintf(fc_host_symbolic_name(lp->host),
|
||||
DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
|
||||
|
||||
spin_lock_irqsave(&fnic_list_lock, flags);
|
||||
list_add_tail(&fnic->list, &fnic_list);
|
||||
spin_unlock_irqrestore(&fnic_list_lock, flags);
|
||||
|
||||
INIT_WORK(&fnic->link_work, fnic_handle_link);
|
||||
INIT_WORK(&fnic->frame_work, fnic_handle_frame);
|
||||
skb_queue_head_init(&fnic->frame_queue);
|
||||
|
||||
/* Enable all queues */
|
||||
for (i = 0; i < fnic->raw_wq_count; i++)
|
||||
vnic_wq_enable(&fnic->wq[i]);
|
||||
for (i = 0; i < fnic->rq_count; i++)
|
||||
vnic_rq_enable(&fnic->rq[i]);
|
||||
for (i = 0; i < fnic->wq_copy_count; i++)
|
||||
vnic_wq_copy_enable(&fnic->wq_copy[i]);
|
||||
|
||||
fc_fabric_login(lp);
|
||||
|
||||
vnic_dev_enable(fnic->vdev);
|
||||
for (i = 0; i < fnic->intr_count; i++)
|
||||
vnic_intr_unmask(&fnic->intr[i]);
|
||||
|
||||
fnic_notify_timer_start(fnic);
|
||||
|
||||
return 0;
|
||||
|
||||
err_out_free_exch_mgr:
|
||||
fc_exch_mgr_free(lp->emp);
|
||||
err_out_remove_scsi_host:
|
||||
fc_remove_host(fnic->lport->host);
|
||||
scsi_remove_host(fnic->lport->host);
|
||||
err_out_free_rq_buf:
|
||||
for (i = 0; i < fnic->rq_count; i++)
|
||||
vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
|
||||
vnic_dev_notify_unset(fnic->vdev);
|
||||
err_out_free_max_pool:
|
||||
mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
|
||||
err_out_free_dflt_pool:
|
||||
mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
|
||||
err_out_free_ioreq_pool:
|
||||
mempool_destroy(fnic->io_req_pool);
|
||||
err_out_free_resources:
|
||||
fnic_free_vnic_resources(fnic);
|
||||
err_out_free_intr:
|
||||
fnic_free_intr(fnic);
|
||||
err_out_clear_intr:
|
||||
fnic_clear_intr_mode(fnic);
|
||||
err_out_dev_close:
|
||||
vnic_dev_close(fnic->vdev);
|
||||
err_out_vnic_unregister:
|
||||
vnic_dev_unregister(fnic->vdev);
|
||||
err_out_iounmap:
|
||||
fnic_iounmap(fnic);
|
||||
err_out_release_regions:
|
||||
pci_release_regions(pdev);
|
||||
err_out_disable_device:
|
||||
pci_disable_device(pdev);
|
||||
err_out_free_hba:
|
||||
scsi_host_put(lp->host);
|
||||
err_out:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void __devexit fnic_remove(struct pci_dev *pdev)
|
||||
{
|
||||
struct fnic *fnic = pci_get_drvdata(pdev);
|
||||
unsigned long flags;
|
||||
|
||||
/*
|
||||
* Mark state so that the workqueue thread stops forwarding
|
||||
* received frames and link events to the local port. ISR and
|
||||
* other threads that can queue work items will also stop
|
||||
* creating work items on the fnic workqueue
|
||||
*/
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
fnic->stop_rx_link_events = 1;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
|
||||
del_timer_sync(&fnic->notify_timer);
|
||||
|
||||
/*
|
||||
* Flush the fnic event queue. After this call, there should
|
||||
* be no event queued for this fnic device in the workqueue
|
||||
*/
|
||||
flush_workqueue(fnic_event_queue);
|
||||
skb_queue_purge(&fnic->frame_queue);
|
||||
|
||||
/*
|
||||
* Log off the fabric. This stops all remote ports, dns port,
|
||||
* logs off the fabric. This flushes all rport, disc, lport work
|
||||
* before returning
|
||||
*/
|
||||
fc_fabric_logoff(fnic->lport);
|
||||
|
||||
spin_lock_irqsave(&fnic->fnic_lock, flags);
|
||||
fnic->in_remove = 1;
|
||||
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
|
||||
|
||||
fc_lport_destroy(fnic->lport);
|
||||
|
||||
/*
|
||||
* This stops the fnic device, masks all interrupts. Completed
|
||||
* CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
|
||||
* cleaned up
|
||||
*/
|
||||
fnic_cleanup(fnic);
|
||||
|
||||
BUG_ON(!skb_queue_empty(&fnic->frame_queue));
|
||||
|
||||
spin_lock_irqsave(&fnic_list_lock, flags);
|
||||
list_del(&fnic->list);
|
||||
spin_unlock_irqrestore(&fnic_list_lock, flags);
|
||||
|
||||
fc_remove_host(fnic->lport->host);
|
||||
scsi_remove_host(fnic->lport->host);
|
||||
fc_exch_mgr_free(fnic->lport->emp);
|
||||
vnic_dev_notify_unset(fnic->vdev);
|
||||
fnic_free_vnic_resources(fnic);
|
||||
fnic_free_intr(fnic);
|
||||
fnic_clear_intr_mode(fnic);
|
||||
vnic_dev_close(fnic->vdev);
|
||||
vnic_dev_unregister(fnic->vdev);
|
||||
fnic_iounmap(fnic);
|
||||
pci_release_regions(pdev);
|
||||
pci_disable_device(pdev);
|
||||
pci_set_drvdata(pdev, NULL);
|
||||
scsi_host_put(fnic->lport->host);
|
||||
}
|
||||
|
||||
static struct pci_driver fnic_driver = {
|
||||
.name = DRV_NAME,
|
||||
.id_table = fnic_id_table,
|
||||
.probe = fnic_probe,
|
||||
.remove = __devexit_p(fnic_remove),
|
||||
};
|
||||
|
||||
static int __init fnic_init_module(void)
|
||||
{
|
||||
size_t len;
|
||||
int err = 0;
|
||||
|
||||
printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
|
||||
|
||||
/* Create a cache for allocation of default size sgls */
|
||||
len = sizeof(struct fnic_dflt_sgl_list);
|
||||
fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
|
||||
("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
|
||||
SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
|
||||
NULL);
|
||||
if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
|
||||
printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
|
||||
err = -ENOMEM;
|
||||
goto err_create_fnic_sgl_slab_dflt;
|
||||
}
|
||||
|
||||
/* Create a cache for allocation of max size sgls*/
|
||||
len = sizeof(struct fnic_sgl_list);
|
||||
fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
|
||||
("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
|
||||
SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
|
||||
NULL);
|
||||
if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
|
||||
printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
|
||||
err = -ENOMEM;
|
||||
goto err_create_fnic_sgl_slab_max;
|
||||
}
|
||||
|
||||
/* Create a cache of io_req structs for use via mempool */
|
||||
fnic_io_req_cache = kmem_cache_create("fnic_io_req",
|
||||
sizeof(struct fnic_io_req),
|
||||
0, SLAB_HWCACHE_ALIGN, NULL);
|
||||
if (!fnic_io_req_cache) {
|
||||
printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
|
||||
err = -ENOMEM;
|
||||
goto err_create_fnic_ioreq_slab;
|
||||
}
|
||||
|
||||
fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
|
||||
if (!fnic_event_queue) {
|
||||
printk(KERN_ERR PFX "fnic work queue create failed\n");
|
||||
err = -ENOMEM;
|
||||
goto err_create_fnic_workq;
|
||||
}
|
||||
|
||||
spin_lock_init(&fnic_list_lock);
|
||||
INIT_LIST_HEAD(&fnic_list);
|
||||
|
||||
fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
|
||||
if (!fnic_fc_transport) {
|
||||
printk(KERN_ERR PFX "fc_attach_transport error\n");
|
||||
err = -ENOMEM;
|
||||
goto err_fc_transport;
|
||||
}
|
||||
|
||||
/* register the driver with PCI system */
|
||||
err = pci_register_driver(&fnic_driver);
|
||||
if (err < 0) {
|
||||
printk(KERN_ERR PFX "pci register error\n");
|
||||
goto err_pci_register;
|
||||
}
|
||||
return err;
|
||||
|
||||
err_pci_register:
|
||||
fc_release_transport(fnic_fc_transport);
|
||||
err_fc_transport:
|
||||
destroy_workqueue(fnic_event_queue);
|
||||
err_create_fnic_workq:
|
||||
kmem_cache_destroy(fnic_io_req_cache);
|
||||
err_create_fnic_ioreq_slab:
|
||||
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
|
||||
err_create_fnic_sgl_slab_max:
|
||||
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
|
||||
err_create_fnic_sgl_slab_dflt:
|
||||
return err;
|
||||
}
|
||||
|
||||
static void __exit fnic_cleanup_module(void)
|
||||
{
|
||||
pci_unregister_driver(&fnic_driver);
|
||||
destroy_workqueue(fnic_event_queue);
|
||||
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
|
||||
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
|
||||
kmem_cache_destroy(fnic_io_req_cache);
|
||||
fc_release_transport(fnic_fc_transport);
|
||||
}
|
||||
|
||||
module_init(fnic_init_module);
|
||||
module_exit(fnic_cleanup_module);
|
||||
|
444
drivers/scsi/fnic/fnic_res.c
Normal file
444
drivers/scsi/fnic/fnic_res.c
Normal file
|
@ -0,0 +1,444 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pci.h>
|
||||
#include "wq_enet_desc.h"
|
||||
#include "rq_enet_desc.h"
|
||||
#include "cq_enet_desc.h"
|
||||
#include "vnic_resource.h"
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_wq.h"
|
||||
#include "vnic_rq.h"
|
||||
#include "vnic_cq.h"
|
||||
#include "vnic_intr.h"
|
||||
#include "vnic_stats.h"
|
||||
#include "vnic_nic.h"
|
||||
#include "fnic.h"
|
||||
|
||||
int fnic_get_vnic_config(struct fnic *fnic)
|
||||
{
|
||||
struct vnic_fc_config *c = &fnic->config;
|
||||
int err;
|
||||
|
||||
#define GET_CONFIG(m) \
|
||||
do { \
|
||||
err = vnic_dev_spec(fnic->vdev, \
|
||||
offsetof(struct vnic_fc_config, m), \
|
||||
sizeof(c->m), &c->m); \
|
||||
if (err) { \
|
||||
shost_printk(KERN_ERR, fnic->lport->host, \
|
||||
"Error getting %s, %d\n", #m, \
|
||||
err); \
|
||||
return err; \
|
||||
} \
|
||||
} while (0);
|
||||
|
||||
GET_CONFIG(node_wwn);
|
||||
GET_CONFIG(port_wwn);
|
||||
GET_CONFIG(wq_enet_desc_count);
|
||||
GET_CONFIG(wq_copy_desc_count);
|
||||
GET_CONFIG(rq_desc_count);
|
||||
GET_CONFIG(maxdatafieldsize);
|
||||
GET_CONFIG(ed_tov);
|
||||
GET_CONFIG(ra_tov);
|
||||
GET_CONFIG(intr_timer);
|
||||
GET_CONFIG(intr_timer_type);
|
||||
GET_CONFIG(flags);
|
||||
GET_CONFIG(flogi_retries);
|
||||
GET_CONFIG(flogi_timeout);
|
||||
GET_CONFIG(plogi_retries);
|
||||
GET_CONFIG(plogi_timeout);
|
||||
GET_CONFIG(io_throttle_count);
|
||||
GET_CONFIG(link_down_timeout);
|
||||
GET_CONFIG(port_down_timeout);
|
||||
GET_CONFIG(port_down_io_retries);
|
||||
GET_CONFIG(luns_per_tgt);
|
||||
|
||||
c->wq_enet_desc_count =
|
||||
min_t(u32, VNIC_FNIC_WQ_DESCS_MAX,
|
||||
max_t(u32, VNIC_FNIC_WQ_DESCS_MIN,
|
||||
c->wq_enet_desc_count));
|
||||
c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16);
|
||||
|
||||
c->wq_copy_desc_count =
|
||||
min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX,
|
||||
max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN,
|
||||
c->wq_copy_desc_count));
|
||||
c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16);
|
||||
|
||||
c->rq_desc_count =
|
||||
min_t(u32, VNIC_FNIC_RQ_DESCS_MAX,
|
||||
max_t(u32, VNIC_FNIC_RQ_DESCS_MIN,
|
||||
c->rq_desc_count));
|
||||
c->rq_desc_count = ALIGN(c->rq_desc_count, 16);
|
||||
|
||||
c->maxdatafieldsize =
|
||||
min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX,
|
||||
max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN,
|
||||
c->maxdatafieldsize));
|
||||
c->ed_tov =
|
||||
min_t(u32, VNIC_FNIC_EDTOV_MAX,
|
||||
max_t(u32, VNIC_FNIC_EDTOV_MIN,
|
||||
c->ed_tov));
|
||||
|
||||
c->ra_tov =
|
||||
min_t(u32, VNIC_FNIC_RATOV_MAX,
|
||||
max_t(u32, VNIC_FNIC_RATOV_MIN,
|
||||
c->ra_tov));
|
||||
|
||||
c->flogi_retries =
|
||||
min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries);
|
||||
|
||||
c->flogi_timeout =
|
||||
min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX,
|
||||
max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN,
|
||||
c->flogi_timeout));
|
||||
|
||||
c->plogi_retries =
|
||||
min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries);
|
||||
|
||||
c->plogi_timeout =
|
||||
min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX,
|
||||
max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN,
|
||||
c->plogi_timeout));
|
||||
|
||||
c->io_throttle_count =
|
||||
min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX,
|
||||
max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN,
|
||||
c->io_throttle_count));
|
||||
|
||||
c->link_down_timeout =
|
||||
min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX,
|
||||
c->link_down_timeout);
|
||||
|
||||
c->port_down_timeout =
|
||||
min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX,
|
||||
c->port_down_timeout);
|
||||
|
||||
c->port_down_io_retries =
|
||||
min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX,
|
||||
c->port_down_io_retries);
|
||||
|
||||
c->luns_per_tgt =
|
||||
min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX,
|
||||
max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN,
|
||||
c->luns_per_tgt));
|
||||
|
||||
c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
|
||||
c->intr_timer_type = c->intr_timer_type;
|
||||
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC MAC addr %02x:%02x:%02x:%02x:%02x:%02x "
|
||||
"wq/wq_copy/rq %d/%d/%d\n",
|
||||
fnic->mac_addr[0], fnic->mac_addr[1], fnic->mac_addr[2],
|
||||
fnic->mac_addr[3], fnic->mac_addr[4], fnic->mac_addr[5],
|
||||
c->wq_enet_desc_count, c->wq_copy_desc_count,
|
||||
c->rq_desc_count);
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC node wwn %llx port wwn %llx\n",
|
||||
c->node_wwn, c->port_wwn);
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC ed_tov %d ra_tov %d\n",
|
||||
c->ed_tov, c->ra_tov);
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC mtu %d intr timer %d\n",
|
||||
c->maxdatafieldsize, c->intr_timer);
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC flags 0x%x luns per tgt %d\n",
|
||||
c->flags, c->luns_per_tgt);
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC flogi_retries %d flogi timeout %d\n",
|
||||
c->flogi_retries, c->flogi_timeout);
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC plogi retries %d plogi timeout %d\n",
|
||||
c->plogi_retries, c->plogi_timeout);
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC io throttle count %d link dn timeout %d\n",
|
||||
c->io_throttle_count, c->link_down_timeout);
|
||||
shost_printk(KERN_INFO, fnic->lport->host,
|
||||
"vNIC port dn io retries %d port dn timeout %d\n",
|
||||
c->port_down_io_retries, c->port_down_timeout);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
|
||||
u8 rss_hash_type,
|
||||
u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable,
|
||||
u8 tso_ipid_split_en, u8 ig_vlan_strip_en)
|
||||
{
|
||||
u64 a0, a1;
|
||||
u32 nic_cfg;
|
||||
int wait = 1000;
|
||||
|
||||
vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
|
||||
rss_hash_type, rss_hash_bits, rss_base_cpu,
|
||||
rss_enable, tso_ipid_split_en, ig_vlan_strip_en);
|
||||
|
||||
a0 = nic_cfg;
|
||||
a1 = 0;
|
||||
|
||||
return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
void fnic_get_res_counts(struct fnic *fnic)
|
||||
{
|
||||
fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ);
|
||||
fnic->raw_wq_count = fnic->wq_count - 1;
|
||||
fnic->wq_copy_count = fnic->wq_count - fnic->raw_wq_count;
|
||||
fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ);
|
||||
fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ);
|
||||
fnic->intr_count = vnic_dev_get_res_count(fnic->vdev,
|
||||
RES_TYPE_INTR_CTRL);
|
||||
}
|
||||
|
||||
void fnic_free_vnic_resources(struct fnic *fnic)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < fnic->raw_wq_count; i++)
|
||||
vnic_wq_free(&fnic->wq[i]);
|
||||
|
||||
for (i = 0; i < fnic->wq_copy_count; i++)
|
||||
vnic_wq_copy_free(&fnic->wq_copy[i]);
|
||||
|
||||
for (i = 0; i < fnic->rq_count; i++)
|
||||
vnic_rq_free(&fnic->rq[i]);
|
||||
|
||||
for (i = 0; i < fnic->cq_count; i++)
|
||||
vnic_cq_free(&fnic->cq[i]);
|
||||
|
||||
for (i = 0; i < fnic->intr_count; i++)
|
||||
vnic_intr_free(&fnic->intr[i]);
|
||||
}
|
||||
|
||||
int fnic_alloc_vnic_resources(struct fnic *fnic)
|
||||
{
|
||||
enum vnic_dev_intr_mode intr_mode;
|
||||
unsigned int mask_on_assertion;
|
||||
unsigned int interrupt_offset;
|
||||
unsigned int error_interrupt_enable;
|
||||
unsigned int error_interrupt_offset;
|
||||
unsigned int i, cq_index;
|
||||
unsigned int wq_copy_cq_desc_count;
|
||||
int err;
|
||||
|
||||
intr_mode = vnic_dev_get_intr_mode(fnic->vdev);
|
||||
|
||||
shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n",
|
||||
intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
|
||||
intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
|
||||
intr_mode == VNIC_DEV_INTR_MODE_MSIX ?
|
||||
"MSI-X" : "unknown");
|
||||
|
||||
shost_printk(KERN_INFO, fnic->lport->host, "vNIC resources avail: "
|
||||
"wq %d cp_wq %d raw_wq %d rq %d cq %d intr %d\n",
|
||||
fnic->wq_count, fnic->wq_copy_count, fnic->raw_wq_count,
|
||||
fnic->rq_count, fnic->cq_count, fnic->intr_count);
|
||||
|
||||
/* Allocate Raw WQ used for FCS frames */
|
||||
for (i = 0; i < fnic->raw_wq_count; i++) {
|
||||
err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i,
|
||||
fnic->config.wq_enet_desc_count,
|
||||
sizeof(struct wq_enet_desc));
|
||||
if (err)
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
/* Allocate Copy WQs used for SCSI IOs */
|
||||
for (i = 0; i < fnic->wq_copy_count; i++) {
|
||||
err = vnic_wq_copy_alloc(fnic->vdev, &fnic->wq_copy[i],
|
||||
(fnic->raw_wq_count + i),
|
||||
fnic->config.wq_copy_desc_count,
|
||||
sizeof(struct fcpio_host_req));
|
||||
if (err)
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
/* RQ for receiving FCS frames */
|
||||
for (i = 0; i < fnic->rq_count; i++) {
|
||||
err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i,
|
||||
fnic->config.rq_desc_count,
|
||||
sizeof(struct rq_enet_desc));
|
||||
if (err)
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
/* CQ for each RQ */
|
||||
for (i = 0; i < fnic->rq_count; i++) {
|
||||
cq_index = i;
|
||||
err = vnic_cq_alloc(fnic->vdev,
|
||||
&fnic->cq[cq_index], cq_index,
|
||||
fnic->config.rq_desc_count,
|
||||
sizeof(struct cq_enet_rq_desc));
|
||||
if (err)
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
/* CQ for each WQ */
|
||||
for (i = 0; i < fnic->raw_wq_count; i++) {
|
||||
cq_index = fnic->rq_count + i;
|
||||
err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index,
|
||||
fnic->config.wq_enet_desc_count,
|
||||
sizeof(struct cq_enet_wq_desc));
|
||||
if (err)
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
/* CQ for each COPY WQ */
|
||||
wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3);
|
||||
for (i = 0; i < fnic->wq_copy_count; i++) {
|
||||
cq_index = fnic->raw_wq_count + fnic->rq_count + i;
|
||||
err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index],
|
||||
cq_index,
|
||||
wq_copy_cq_desc_count,
|
||||
sizeof(struct fcpio_fw_req));
|
||||
if (err)
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
for (i = 0; i < fnic->intr_count; i++) {
|
||||
err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i);
|
||||
if (err)
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
fnic->legacy_pba = vnic_dev_get_res(fnic->vdev,
|
||||
RES_TYPE_INTR_PBA_LEGACY, 0);
|
||||
|
||||
if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"Failed to hook legacy pba resource\n");
|
||||
err = -ENODEV;
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
/*
|
||||
* Init RQ/WQ resources.
|
||||
*
|
||||
* RQ[0 to n-1] point to CQ[0 to n-1]
|
||||
* WQ[0 to m-1] point to CQ[n to n+m-1]
|
||||
* WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1]
|
||||
*
|
||||
* Note for copy wq we always initialize with cq_index = 0
|
||||
*
|
||||
* Error interrupt is not enabled for MSI.
|
||||
*/
|
||||
|
||||
switch (intr_mode) {
|
||||
case VNIC_DEV_INTR_MODE_INTX:
|
||||
case VNIC_DEV_INTR_MODE_MSIX:
|
||||
error_interrupt_enable = 1;
|
||||
error_interrupt_offset = fnic->err_intr_offset;
|
||||
break;
|
||||
default:
|
||||
error_interrupt_enable = 0;
|
||||
error_interrupt_offset = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
for (i = 0; i < fnic->rq_count; i++) {
|
||||
cq_index = i;
|
||||
vnic_rq_init(&fnic->rq[i],
|
||||
cq_index,
|
||||
error_interrupt_enable,
|
||||
error_interrupt_offset);
|
||||
}
|
||||
|
||||
for (i = 0; i < fnic->raw_wq_count; i++) {
|
||||
cq_index = i + fnic->rq_count;
|
||||
vnic_wq_init(&fnic->wq[i],
|
||||
cq_index,
|
||||
error_interrupt_enable,
|
||||
error_interrupt_offset);
|
||||
}
|
||||
|
||||
for (i = 0; i < fnic->wq_copy_count; i++) {
|
||||
vnic_wq_copy_init(&fnic->wq_copy[i],
|
||||
0 /* cq_index 0 - always */,
|
||||
error_interrupt_enable,
|
||||
error_interrupt_offset);
|
||||
}
|
||||
|
||||
for (i = 0; i < fnic->cq_count; i++) {
|
||||
|
||||
switch (intr_mode) {
|
||||
case VNIC_DEV_INTR_MODE_MSIX:
|
||||
interrupt_offset = i;
|
||||
break;
|
||||
default:
|
||||
interrupt_offset = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
vnic_cq_init(&fnic->cq[i],
|
||||
0 /* flow_control_enable */,
|
||||
1 /* color_enable */,
|
||||
0 /* cq_head */,
|
||||
0 /* cq_tail */,
|
||||
1 /* cq_tail_color */,
|
||||
1 /* interrupt_enable */,
|
||||
1 /* cq_entry_enable */,
|
||||
0 /* cq_message_enable */,
|
||||
interrupt_offset,
|
||||
0 /* cq_message_addr */);
|
||||
}
|
||||
|
||||
/*
|
||||
* Init INTR resources
|
||||
*
|
||||
* mask_on_assertion is not used for INTx due to the level-
|
||||
* triggered nature of INTx
|
||||
*/
|
||||
|
||||
switch (intr_mode) {
|
||||
case VNIC_DEV_INTR_MODE_MSI:
|
||||
case VNIC_DEV_INTR_MODE_MSIX:
|
||||
mask_on_assertion = 1;
|
||||
break;
|
||||
default:
|
||||
mask_on_assertion = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
for (i = 0; i < fnic->intr_count; i++) {
|
||||
vnic_intr_init(&fnic->intr[i],
|
||||
fnic->config.intr_timer,
|
||||
fnic->config.intr_timer_type,
|
||||
mask_on_assertion);
|
||||
}
|
||||
|
||||
/* init the stats memory by making the first call here */
|
||||
err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
|
||||
if (err) {
|
||||
shost_printk(KERN_ERR, fnic->lport->host,
|
||||
"vnic_dev_stats_dump failed - x%x\n", err);
|
||||
goto err_out_cleanup;
|
||||
}
|
||||
|
||||
/* Clear LIF stats */
|
||||
vnic_dev_stats_clear(fnic->vdev);
|
||||
|
||||
return 0;
|
||||
|
||||
err_out_cleanup:
|
||||
fnic_free_vnic_resources(fnic);
|
||||
|
||||
return err;
|
||||
}
|
197
drivers/scsi/fnic/fnic_res.h
Normal file
197
drivers/scsi/fnic/fnic_res.h
Normal file
|
@ -0,0 +1,197 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _FNIC_RES_H_
|
||||
#define _FNIC_RES_H_
|
||||
|
||||
#include "wq_enet_desc.h"
|
||||
#include "rq_enet_desc.h"
|
||||
#include "vnic_wq.h"
|
||||
#include "vnic_rq.h"
|
||||
#include "fnic_io.h"
|
||||
#include "fcpio.h"
|
||||
#include "vnic_wq_copy.h"
|
||||
#include "vnic_cq_copy.h"
|
||||
|
||||
static inline void fnic_queue_wq_desc(struct vnic_wq *wq,
|
||||
void *os_buf, dma_addr_t dma_addr,
|
||||
unsigned int len, unsigned int fc_eof,
|
||||
int vlan_tag_insert,
|
||||
unsigned int vlan_tag,
|
||||
int cq_entry, int sop, int eop)
|
||||
{
|
||||
struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
|
||||
|
||||
wq_enet_desc_enc(desc,
|
||||
(u64)dma_addr | VNIC_PADDR_TARGET,
|
||||
(u16)len,
|
||||
0, /* mss_or_csum_offset */
|
||||
(u16)fc_eof,
|
||||
0, /* offload_mode */
|
||||
(u8)eop, (u8)cq_entry,
|
||||
1, /* fcoe_encap */
|
||||
(u8)vlan_tag_insert,
|
||||
(u16)vlan_tag,
|
||||
0 /* loopback */);
|
||||
|
||||
vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop);
|
||||
}
|
||||
|
||||
static inline void fnic_queue_wq_copy_desc_icmnd_16(struct vnic_wq_copy *wq,
|
||||
u32 req_id,
|
||||
u32 lunmap_id, u8 spl_flags,
|
||||
u32 sgl_cnt, u32 sense_len,
|
||||
u64 sgl_addr, u64 sns_addr,
|
||||
u8 crn, u8 pri_ta,
|
||||
u8 flags, u8 *scsi_cdb,
|
||||
u32 data_len, u8 *lun,
|
||||
u32 d_id, u16 mss,
|
||||
u32 ratov, u32 edtov)
|
||||
{
|
||||
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
|
||||
|
||||
desc->hdr.type = FCPIO_ICMND_16; /* enum fcpio_type */
|
||||
desc->hdr.status = 0; /* header status entry */
|
||||
desc->hdr._resvd = 0; /* reserved */
|
||||
desc->hdr.tag.u.req_id = req_id; /* id for this request */
|
||||
|
||||
desc->u.icmnd_16.lunmap_id = lunmap_id; /* index into lunmap table */
|
||||
desc->u.icmnd_16.special_req_flags = spl_flags; /* exch req flags */
|
||||
desc->u.icmnd_16._resvd0[0] = 0; /* reserved */
|
||||
desc->u.icmnd_16._resvd0[1] = 0; /* reserved */
|
||||
desc->u.icmnd_16._resvd0[2] = 0; /* reserved */
|
||||
desc->u.icmnd_16.sgl_cnt = sgl_cnt; /* scatter-gather list count */
|
||||
desc->u.icmnd_16.sense_len = sense_len; /* sense buffer length */
|
||||
desc->u.icmnd_16.sgl_addr = sgl_addr; /* scatter-gather list addr */
|
||||
desc->u.icmnd_16.sense_addr = sns_addr; /* sense buffer address */
|
||||
desc->u.icmnd_16.crn = crn; /* SCSI Command Reference No.*/
|
||||
desc->u.icmnd_16.pri_ta = pri_ta; /* SCSI Pri & Task attribute */
|
||||
desc->u.icmnd_16._resvd1 = 0; /* reserved: should be 0 */
|
||||
desc->u.icmnd_16.flags = flags; /* command flags */
|
||||
memcpy(desc->u.icmnd_16.scsi_cdb, scsi_cdb, CDB_16); /* SCSI CDB */
|
||||
desc->u.icmnd_16.data_len = data_len; /* length of data expected */
|
||||
memcpy(desc->u.icmnd_16.lun, lun, LUN_ADDRESS); /* LUN address */
|
||||
desc->u.icmnd_16._resvd2 = 0; /* reserved */
|
||||
hton24(desc->u.icmnd_16.d_id, d_id); /* FC vNIC only: Target D_ID */
|
||||
desc->u.icmnd_16.mss = mss; /* FC vNIC only: max burst */
|
||||
desc->u.icmnd_16.r_a_tov = ratov; /*FC vNIC only: Res. Alloc Timeout */
|
||||
desc->u.icmnd_16.e_d_tov = edtov; /*FC vNIC only: Err Detect Timeout */
|
||||
|
||||
vnic_wq_copy_post(wq);
|
||||
}
|
||||
|
||||
static inline void fnic_queue_wq_copy_desc_itmf(struct vnic_wq_copy *wq,
|
||||
u32 req_id, u32 lunmap_id,
|
||||
u32 tm_req, u32 tm_id, u8 *lun,
|
||||
u32 d_id, u32 r_a_tov,
|
||||
u32 e_d_tov)
|
||||
{
|
||||
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
|
||||
|
||||
desc->hdr.type = FCPIO_ITMF; /* enum fcpio_type */
|
||||
desc->hdr.status = 0; /* header status entry */
|
||||
desc->hdr._resvd = 0; /* reserved */
|
||||
desc->hdr.tag.u.req_id = req_id; /* id for this request */
|
||||
|
||||
desc->u.itmf.lunmap_id = lunmap_id; /* index into lunmap table */
|
||||
desc->u.itmf.tm_req = tm_req; /* SCSI Task Management request */
|
||||
desc->u.itmf.t_tag = tm_id; /* tag of fcpio to be aborted */
|
||||
desc->u.itmf._resvd = 0;
|
||||
memcpy(desc->u.itmf.lun, lun, LUN_ADDRESS); /* LUN address */
|
||||
desc->u.itmf._resvd1 = 0;
|
||||
hton24(desc->u.itmf.d_id, d_id); /* FC vNIC only: Target D_ID */
|
||||
desc->u.itmf.r_a_tov = r_a_tov; /* FC vNIC only: R_A_TOV in msec */
|
||||
desc->u.itmf.e_d_tov = e_d_tov; /* FC vNIC only: E_D_TOV in msec */
|
||||
|
||||
vnic_wq_copy_post(wq);
|
||||
}
|
||||
|
||||
static inline void fnic_queue_wq_copy_desc_flogi_reg(struct vnic_wq_copy *wq,
|
||||
u32 req_id, u8 format,
|
||||
u32 s_id, u8 *gw_mac)
|
||||
{
|
||||
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
|
||||
|
||||
desc->hdr.type = FCPIO_FLOGI_REG; /* enum fcpio_type */
|
||||
desc->hdr.status = 0; /* header status entry */
|
||||
desc->hdr._resvd = 0; /* reserved */
|
||||
desc->hdr.tag.u.req_id = req_id; /* id for this request */
|
||||
|
||||
desc->u.flogi_reg.format = format;
|
||||
hton24(desc->u.flogi_reg.s_id, s_id);
|
||||
memcpy(desc->u.flogi_reg.gateway_mac, gw_mac, ETH_ALEN);
|
||||
|
||||
vnic_wq_copy_post(wq);
|
||||
}
|
||||
|
||||
static inline void fnic_queue_wq_copy_desc_fw_reset(struct vnic_wq_copy *wq,
|
||||
u32 req_id)
|
||||
{
|
||||
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
|
||||
|
||||
desc->hdr.type = FCPIO_RESET; /* enum fcpio_type */
|
||||
desc->hdr.status = 0; /* header status entry */
|
||||
desc->hdr._resvd = 0; /* reserved */
|
||||
desc->hdr.tag.u.req_id = req_id; /* id for this request */
|
||||
|
||||
vnic_wq_copy_post(wq);
|
||||
}
|
||||
|
||||
static inline void fnic_queue_wq_copy_desc_lunmap(struct vnic_wq_copy *wq,
|
||||
u32 req_id, u64 lunmap_addr,
|
||||
u32 lunmap_len)
|
||||
{
|
||||
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
|
||||
|
||||
desc->hdr.type = FCPIO_LUNMAP_REQ; /* enum fcpio_type */
|
||||
desc->hdr.status = 0; /* header status entry */
|
||||
desc->hdr._resvd = 0; /* reserved */
|
||||
desc->hdr.tag.u.req_id = req_id; /* id for this request */
|
||||
|
||||
desc->u.lunmap_req.addr = lunmap_addr; /* address of the buffer */
|
||||
desc->u.lunmap_req.len = lunmap_len; /* len of the buffer */
|
||||
|
||||
vnic_wq_copy_post(wq);
|
||||
}
|
||||
|
||||
static inline void fnic_queue_rq_desc(struct vnic_rq *rq,
|
||||
void *os_buf, dma_addr_t dma_addr,
|
||||
u16 len)
|
||||
{
|
||||
struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
|
||||
|
||||
rq_enet_desc_enc(desc,
|
||||
(u64)dma_addr | VNIC_PADDR_TARGET,
|
||||
RQ_ENET_TYPE_ONLY_SOP,
|
||||
(u16)len);
|
||||
|
||||
vnic_rq_post(rq, os_buf, 0, dma_addr, len);
|
||||
}
|
||||
|
||||
|
||||
struct fnic;
|
||||
|
||||
int fnic_get_vnic_config(struct fnic *);
|
||||
int fnic_alloc_vnic_resources(struct fnic *);
|
||||
void fnic_free_vnic_resources(struct fnic *);
|
||||
void fnic_get_res_counts(struct fnic *);
|
||||
int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
|
||||
u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu,
|
||||
u8 rss_enable, u8 tso_ipid_split_en,
|
||||
u8 ig_vlan_strip_en);
|
||||
|
||||
#endif /* _FNIC_RES_H_ */
|
1850
drivers/scsi/fnic/fnic_scsi.c
Normal file
1850
drivers/scsi/fnic/fnic_scsi.c
Normal file
File diff suppressed because it is too large
Load diff
58
drivers/scsi/fnic/rq_enet_desc.h
Normal file
58
drivers/scsi/fnic/rq_enet_desc.h
Normal file
|
@ -0,0 +1,58 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _RQ_ENET_DESC_H_
|
||||
#define _RQ_ENET_DESC_H_
|
||||
|
||||
/* Ethernet receive queue descriptor: 16B */
|
||||
struct rq_enet_desc {
|
||||
__le64 address;
|
||||
__le16 length_type;
|
||||
u8 reserved[6];
|
||||
};
|
||||
|
||||
enum rq_enet_type_types {
|
||||
RQ_ENET_TYPE_ONLY_SOP = 0,
|
||||
RQ_ENET_TYPE_NOT_SOP = 1,
|
||||
RQ_ENET_TYPE_RESV2 = 2,
|
||||
RQ_ENET_TYPE_RESV3 = 3,
|
||||
};
|
||||
|
||||
#define RQ_ENET_ADDR_BITS 64
|
||||
#define RQ_ENET_LEN_BITS 14
|
||||
#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)
|
||||
#define RQ_ENET_TYPE_BITS 2
|
||||
#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
|
||||
|
||||
static inline void rq_enet_desc_enc(struct rq_enet_desc *desc,
|
||||
u64 address, u8 type, u16 length)
|
||||
{
|
||||
desc->address = cpu_to_le64(address);
|
||||
desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
|
||||
((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
|
||||
}
|
||||
|
||||
static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
|
||||
u64 *address, u8 *type, u16 *length)
|
||||
{
|
||||
*address = le64_to_cpu(desc->address);
|
||||
*length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;
|
||||
*type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) &
|
||||
RQ_ENET_TYPE_MASK);
|
||||
}
|
||||
|
||||
#endif /* _RQ_ENET_DESC_H_ */
|
85
drivers/scsi/fnic/vnic_cq.c
Normal file
85
drivers/scsi/fnic/vnic_cq.c
Normal file
|
@ -0,0 +1,85 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pci.h>
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_cq.h"
|
||||
|
||||
void vnic_cq_free(struct vnic_cq *cq)
|
||||
{
|
||||
vnic_dev_free_desc_ring(cq->vdev, &cq->ring);
|
||||
|
||||
cq->ctrl = NULL;
|
||||
}
|
||||
|
||||
int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
|
||||
unsigned int desc_count, unsigned int desc_size)
|
||||
{
|
||||
int err;
|
||||
|
||||
cq->index = index;
|
||||
cq->vdev = vdev;
|
||||
|
||||
cq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_CQ, index);
|
||||
if (!cq->ctrl) {
|
||||
printk(KERN_ERR "Failed to hook CQ[%d] resource\n", index);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
err = vnic_dev_alloc_desc_ring(vdev, &cq->ring, desc_count, desc_size);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
|
||||
unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
|
||||
unsigned int cq_tail_color, unsigned int interrupt_enable,
|
||||
unsigned int cq_entry_enable, unsigned int cq_message_enable,
|
||||
unsigned int interrupt_offset, u64 cq_message_addr)
|
||||
{
|
||||
u64 paddr;
|
||||
|
||||
paddr = (u64)cq->ring.base_addr | VNIC_PADDR_TARGET;
|
||||
writeq(paddr, &cq->ctrl->ring_base);
|
||||
iowrite32(cq->ring.desc_count, &cq->ctrl->ring_size);
|
||||
iowrite32(flow_control_enable, &cq->ctrl->flow_control_enable);
|
||||
iowrite32(color_enable, &cq->ctrl->color_enable);
|
||||
iowrite32(cq_head, &cq->ctrl->cq_head);
|
||||
iowrite32(cq_tail, &cq->ctrl->cq_tail);
|
||||
iowrite32(cq_tail_color, &cq->ctrl->cq_tail_color);
|
||||
iowrite32(interrupt_enable, &cq->ctrl->interrupt_enable);
|
||||
iowrite32(cq_entry_enable, &cq->ctrl->cq_entry_enable);
|
||||
iowrite32(cq_message_enable, &cq->ctrl->cq_message_enable);
|
||||
iowrite32(interrupt_offset, &cq->ctrl->interrupt_offset);
|
||||
writeq(cq_message_addr, &cq->ctrl->cq_message_addr);
|
||||
}
|
||||
|
||||
void vnic_cq_clean(struct vnic_cq *cq)
|
||||
{
|
||||
cq->to_clean = 0;
|
||||
cq->last_color = 0;
|
||||
|
||||
iowrite32(0, &cq->ctrl->cq_head);
|
||||
iowrite32(0, &cq->ctrl->cq_tail);
|
||||
iowrite32(1, &cq->ctrl->cq_tail_color);
|
||||
|
||||
vnic_dev_clear_desc_ring(&cq->ring);
|
||||
}
|
121
drivers/scsi/fnic/vnic_cq.h
Normal file
121
drivers/scsi/fnic/vnic_cq.h
Normal file
|
@ -0,0 +1,121 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_CQ_H_
|
||||
#define _VNIC_CQ_H_
|
||||
|
||||
#include "cq_desc.h"
|
||||
#include "vnic_dev.h"
|
||||
|
||||
/*
|
||||
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
|
||||
* Driver) when both are built with CONFIG options =y
|
||||
*/
|
||||
#define vnic_cq_service fnic_cq_service
|
||||
#define vnic_cq_free fnic_cq_free
|
||||
#define vnic_cq_alloc fnic_cq_alloc
|
||||
#define vnic_cq_init fnic_cq_init
|
||||
#define vnic_cq_clean fnic_cq_clean
|
||||
|
||||
/* Completion queue control */
|
||||
struct vnic_cq_ctrl {
|
||||
u64 ring_base; /* 0x00 */
|
||||
u32 ring_size; /* 0x08 */
|
||||
u32 pad0;
|
||||
u32 flow_control_enable; /* 0x10 */
|
||||
u32 pad1;
|
||||
u32 color_enable; /* 0x18 */
|
||||
u32 pad2;
|
||||
u32 cq_head; /* 0x20 */
|
||||
u32 pad3;
|
||||
u32 cq_tail; /* 0x28 */
|
||||
u32 pad4;
|
||||
u32 cq_tail_color; /* 0x30 */
|
||||
u32 pad5;
|
||||
u32 interrupt_enable; /* 0x38 */
|
||||
u32 pad6;
|
||||
u32 cq_entry_enable; /* 0x40 */
|
||||
u32 pad7;
|
||||
u32 cq_message_enable; /* 0x48 */
|
||||
u32 pad8;
|
||||
u32 interrupt_offset; /* 0x50 */
|
||||
u32 pad9;
|
||||
u64 cq_message_addr; /* 0x58 */
|
||||
u32 pad10;
|
||||
};
|
||||
|
||||
struct vnic_cq {
|
||||
unsigned int index;
|
||||
struct vnic_dev *vdev;
|
||||
struct vnic_cq_ctrl __iomem *ctrl; /* memory-mapped */
|
||||
struct vnic_dev_ring ring;
|
||||
unsigned int to_clean;
|
||||
unsigned int last_color;
|
||||
};
|
||||
|
||||
static inline unsigned int vnic_cq_service(struct vnic_cq *cq,
|
||||
unsigned int work_to_do,
|
||||
int (*q_service)(struct vnic_dev *vdev, struct cq_desc *cq_desc,
|
||||
u8 type, u16 q_number, u16 completed_index, void *opaque),
|
||||
void *opaque)
|
||||
{
|
||||
struct cq_desc *cq_desc;
|
||||
unsigned int work_done = 0;
|
||||
u16 q_number, completed_index;
|
||||
u8 type, color;
|
||||
|
||||
cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs +
|
||||
cq->ring.desc_size * cq->to_clean);
|
||||
cq_desc_dec(cq_desc, &type, &color,
|
||||
&q_number, &completed_index);
|
||||
|
||||
while (color != cq->last_color) {
|
||||
|
||||
if ((*q_service)(cq->vdev, cq_desc, type,
|
||||
q_number, completed_index, opaque))
|
||||
break;
|
||||
|
||||
cq->to_clean++;
|
||||
if (cq->to_clean == cq->ring.desc_count) {
|
||||
cq->to_clean = 0;
|
||||
cq->last_color = cq->last_color ? 0 : 1;
|
||||
}
|
||||
|
||||
cq_desc = (struct cq_desc *)((u8 *)cq->ring.descs +
|
||||
cq->ring.desc_size * cq->to_clean);
|
||||
cq_desc_dec(cq_desc, &type, &color,
|
||||
&q_number, &completed_index);
|
||||
|
||||
work_done++;
|
||||
if (work_done >= work_to_do)
|
||||
break;
|
||||
}
|
||||
|
||||
return work_done;
|
||||
}
|
||||
|
||||
void vnic_cq_free(struct vnic_cq *cq);
|
||||
int vnic_cq_alloc(struct vnic_dev *vdev, struct vnic_cq *cq, unsigned int index,
|
||||
unsigned int desc_count, unsigned int desc_size);
|
||||
void vnic_cq_init(struct vnic_cq *cq, unsigned int flow_control_enable,
|
||||
unsigned int color_enable, unsigned int cq_head, unsigned int cq_tail,
|
||||
unsigned int cq_tail_color, unsigned int interrupt_enable,
|
||||
unsigned int cq_entry_enable, unsigned int message_enable,
|
||||
unsigned int interrupt_offset, u64 message_addr);
|
||||
void vnic_cq_clean(struct vnic_cq *cq);
|
||||
|
||||
#endif /* _VNIC_CQ_H_ */
|
62
drivers/scsi/fnic/vnic_cq_copy.h
Normal file
62
drivers/scsi/fnic/vnic_cq_copy.h
Normal file
|
@ -0,0 +1,62 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_CQ_COPY_H_
|
||||
#define _VNIC_CQ_COPY_H_
|
||||
|
||||
#include "fcpio.h"
|
||||
|
||||
static inline unsigned int vnic_cq_copy_service(
|
||||
struct vnic_cq *cq,
|
||||
int (*q_service)(struct vnic_dev *vdev,
|
||||
unsigned int index,
|
||||
struct fcpio_fw_req *desc),
|
||||
unsigned int work_to_do)
|
||||
|
||||
{
|
||||
struct fcpio_fw_req *desc;
|
||||
unsigned int work_done = 0;
|
||||
u8 color;
|
||||
|
||||
desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs +
|
||||
cq->ring.desc_size * cq->to_clean);
|
||||
fcpio_color_dec(desc, &color);
|
||||
|
||||
while (color != cq->last_color) {
|
||||
|
||||
if ((*q_service)(cq->vdev, cq->index, desc))
|
||||
break;
|
||||
|
||||
cq->to_clean++;
|
||||
if (cq->to_clean == cq->ring.desc_count) {
|
||||
cq->to_clean = 0;
|
||||
cq->last_color = cq->last_color ? 0 : 1;
|
||||
}
|
||||
|
||||
desc = (struct fcpio_fw_req *)((u8 *)cq->ring.descs +
|
||||
cq->ring.desc_size * cq->to_clean);
|
||||
fcpio_color_dec(desc, &color);
|
||||
|
||||
work_done++;
|
||||
if (work_done >= work_to_do)
|
||||
break;
|
||||
}
|
||||
|
||||
return work_done;
|
||||
}
|
||||
|
||||
#endif /* _VNIC_CQ_COPY_H_ */
|
690
drivers/scsi/fnic/vnic_dev.c
Normal file
690
drivers/scsi/fnic/vnic_dev.c
Normal file
|
@ -0,0 +1,690 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/if_ether.h>
|
||||
#include "vnic_resource.h"
|
||||
#include "vnic_devcmd.h"
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_stats.h"
|
||||
|
||||
struct vnic_res {
|
||||
void __iomem *vaddr;
|
||||
unsigned int count;
|
||||
};
|
||||
|
||||
struct vnic_dev {
|
||||
void *priv;
|
||||
struct pci_dev *pdev;
|
||||
struct vnic_res res[RES_TYPE_MAX];
|
||||
enum vnic_dev_intr_mode intr_mode;
|
||||
struct vnic_devcmd __iomem *devcmd;
|
||||
struct vnic_devcmd_notify *notify;
|
||||
struct vnic_devcmd_notify notify_copy;
|
||||
dma_addr_t notify_pa;
|
||||
u32 *linkstatus;
|
||||
dma_addr_t linkstatus_pa;
|
||||
struct vnic_stats *stats;
|
||||
dma_addr_t stats_pa;
|
||||
struct vnic_devcmd_fw_info *fw_info;
|
||||
dma_addr_t fw_info_pa;
|
||||
};
|
||||
|
||||
#define VNIC_MAX_RES_HDR_SIZE \
|
||||
(sizeof(struct vnic_resource_header) + \
|
||||
sizeof(struct vnic_resource) * RES_TYPE_MAX)
|
||||
#define VNIC_RES_STRIDE 128
|
||||
|
||||
void *vnic_dev_priv(struct vnic_dev *vdev)
|
||||
{
|
||||
return vdev->priv;
|
||||
}
|
||||
|
||||
static int vnic_dev_discover_res(struct vnic_dev *vdev,
|
||||
struct vnic_dev_bar *bar)
|
||||
{
|
||||
struct vnic_resource_header __iomem *rh;
|
||||
struct vnic_resource __iomem *r;
|
||||
u8 type;
|
||||
|
||||
if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
|
||||
printk(KERN_ERR "vNIC BAR0 res hdr length error\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
rh = bar->vaddr;
|
||||
if (!rh) {
|
||||
printk(KERN_ERR "vNIC BAR0 res hdr not mem-mapped\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (ioread32(&rh->magic) != VNIC_RES_MAGIC ||
|
||||
ioread32(&rh->version) != VNIC_RES_VERSION) {
|
||||
printk(KERN_ERR "vNIC BAR0 res magic/version error "
|
||||
"exp (%lx/%lx) curr (%x/%x)\n",
|
||||
VNIC_RES_MAGIC, VNIC_RES_VERSION,
|
||||
ioread32(&rh->magic), ioread32(&rh->version));
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
r = (struct vnic_resource __iomem *)(rh + 1);
|
||||
|
||||
while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
|
||||
|
||||
u8 bar_num = ioread8(&r->bar);
|
||||
u32 bar_offset = ioread32(&r->bar_offset);
|
||||
u32 count = ioread32(&r->count);
|
||||
u32 len;
|
||||
|
||||
r++;
|
||||
|
||||
if (bar_num != 0) /* only mapping in BAR0 resources */
|
||||
continue;
|
||||
|
||||
switch (type) {
|
||||
case RES_TYPE_WQ:
|
||||
case RES_TYPE_RQ:
|
||||
case RES_TYPE_CQ:
|
||||
case RES_TYPE_INTR_CTRL:
|
||||
/* each count is stride bytes long */
|
||||
len = count * VNIC_RES_STRIDE;
|
||||
if (len + bar_offset > bar->len) {
|
||||
printk(KERN_ERR "vNIC BAR0 resource %d "
|
||||
"out-of-bounds, offset 0x%x + "
|
||||
"size 0x%x > bar len 0x%lx\n",
|
||||
type, bar_offset,
|
||||
len,
|
||||
bar->len);
|
||||
return -EINVAL;
|
||||
}
|
||||
break;
|
||||
case RES_TYPE_INTR_PBA_LEGACY:
|
||||
case RES_TYPE_DEVCMD:
|
||||
len = count;
|
||||
break;
|
||||
default:
|
||||
continue;
|
||||
}
|
||||
|
||||
vdev->res[type].count = count;
|
||||
vdev->res[type].vaddr = (char __iomem *)bar->vaddr + bar_offset;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
|
||||
enum vnic_res_type type)
|
||||
{
|
||||
return vdev->res[type].count;
|
||||
}
|
||||
|
||||
void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
|
||||
unsigned int index)
|
||||
{
|
||||
if (!vdev->res[type].vaddr)
|
||||
return NULL;
|
||||
|
||||
switch (type) {
|
||||
case RES_TYPE_WQ:
|
||||
case RES_TYPE_RQ:
|
||||
case RES_TYPE_CQ:
|
||||
case RES_TYPE_INTR_CTRL:
|
||||
return (char __iomem *)vdev->res[type].vaddr +
|
||||
index * VNIC_RES_STRIDE;
|
||||
default:
|
||||
return (char __iomem *)vdev->res[type].vaddr;
|
||||
}
|
||||
}
|
||||
|
||||
unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
|
||||
unsigned int desc_count,
|
||||
unsigned int desc_size)
|
||||
{
|
||||
/* The base address of the desc rings must be 512 byte aligned.
|
||||
* Descriptor count is aligned to groups of 32 descriptors. A
|
||||
* count of 0 means the maximum 4096 descriptors. Descriptor
|
||||
* size is aligned to 16 bytes.
|
||||
*/
|
||||
|
||||
unsigned int count_align = 32;
|
||||
unsigned int desc_align = 16;
|
||||
|
||||
ring->base_align = 512;
|
||||
|
||||
if (desc_count == 0)
|
||||
desc_count = 4096;
|
||||
|
||||
ring->desc_count = ALIGN(desc_count, count_align);
|
||||
|
||||
ring->desc_size = ALIGN(desc_size, desc_align);
|
||||
|
||||
ring->size = ring->desc_count * ring->desc_size;
|
||||
ring->size_unaligned = ring->size + ring->base_align;
|
||||
|
||||
return ring->size_unaligned;
|
||||
}
|
||||
|
||||
void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
|
||||
{
|
||||
memset(ring->descs, 0, ring->size);
|
||||
}
|
||||
|
||||
int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
|
||||
unsigned int desc_count, unsigned int desc_size)
|
||||
{
|
||||
vnic_dev_desc_ring_size(ring, desc_count, desc_size);
|
||||
|
||||
ring->descs_unaligned = pci_alloc_consistent(vdev->pdev,
|
||||
ring->size_unaligned,
|
||||
&ring->base_addr_unaligned);
|
||||
|
||||
if (!ring->descs_unaligned) {
|
||||
printk(KERN_ERR
|
||||
"Failed to allocate ring (size=%d), aborting\n",
|
||||
(int)ring->size);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
ring->base_addr = ALIGN(ring->base_addr_unaligned,
|
||||
ring->base_align);
|
||||
ring->descs = (u8 *)ring->descs_unaligned +
|
||||
(ring->base_addr - ring->base_addr_unaligned);
|
||||
|
||||
vnic_dev_clear_desc_ring(ring);
|
||||
|
||||
ring->desc_avail = ring->desc_count - 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_dev_free_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring)
|
||||
{
|
||||
if (ring->descs) {
|
||||
pci_free_consistent(vdev->pdev,
|
||||
ring->size_unaligned,
|
||||
ring->descs_unaligned,
|
||||
ring->base_addr_unaligned);
|
||||
ring->descs = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
|
||||
u64 *a0, u64 *a1, int wait)
|
||||
{
|
||||
struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
|
||||
int delay;
|
||||
u32 status;
|
||||
int dev_cmd_err[] = {
|
||||
/* convert from fw's version of error.h to host's version */
|
||||
0, /* ERR_SUCCESS */
|
||||
EINVAL, /* ERR_EINVAL */
|
||||
EFAULT, /* ERR_EFAULT */
|
||||
EPERM, /* ERR_EPERM */
|
||||
EBUSY, /* ERR_EBUSY */
|
||||
};
|
||||
int err;
|
||||
|
||||
status = ioread32(&devcmd->status);
|
||||
if (status & STAT_BUSY) {
|
||||
printk(KERN_ERR "Busy devcmd %d\n", _CMD_N(cmd));
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
|
||||
writeq(*a0, &devcmd->args[0]);
|
||||
writeq(*a1, &devcmd->args[1]);
|
||||
wmb();
|
||||
}
|
||||
|
||||
iowrite32(cmd, &devcmd->cmd);
|
||||
|
||||
if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
|
||||
return 0;
|
||||
|
||||
for (delay = 0; delay < wait; delay++) {
|
||||
|
||||
udelay(100);
|
||||
|
||||
status = ioread32(&devcmd->status);
|
||||
if (!(status & STAT_BUSY)) {
|
||||
|
||||
if (status & STAT_ERROR) {
|
||||
err = dev_cmd_err[(int)readq(&devcmd->args[0])];
|
||||
printk(KERN_ERR "Error %d devcmd %d\n",
|
||||
err, _CMD_N(cmd));
|
||||
return -err;
|
||||
}
|
||||
|
||||
if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
|
||||
rmb();
|
||||
*a0 = readq(&devcmd->args[0]);
|
||||
*a1 = readq(&devcmd->args[1]);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
printk(KERN_ERR "Timedout devcmd %d\n", _CMD_N(cmd));
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
int vnic_dev_fw_info(struct vnic_dev *vdev,
|
||||
struct vnic_devcmd_fw_info **fw_info)
|
||||
{
|
||||
u64 a0, a1 = 0;
|
||||
int wait = 1000;
|
||||
int err = 0;
|
||||
|
||||
if (!vdev->fw_info) {
|
||||
vdev->fw_info = pci_alloc_consistent(vdev->pdev,
|
||||
sizeof(struct vnic_devcmd_fw_info),
|
||||
&vdev->fw_info_pa);
|
||||
if (!vdev->fw_info)
|
||||
return -ENOMEM;
|
||||
|
||||
a0 = vdev->fw_info_pa;
|
||||
|
||||
/* only get fw_info once and cache it */
|
||||
err = vnic_dev_cmd(vdev, CMD_MCPU_FW_INFO, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
*fw_info = vdev->fw_info;
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, unsigned int size,
|
||||
void *value)
|
||||
{
|
||||
u64 a0, a1;
|
||||
int wait = 1000;
|
||||
int err;
|
||||
|
||||
a0 = offset;
|
||||
a1 = size;
|
||||
|
||||
err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
|
||||
|
||||
switch (size) {
|
||||
case 1:
|
||||
*(u8 *)value = (u8)a0;
|
||||
break;
|
||||
case 2:
|
||||
*(u16 *)value = (u16)a0;
|
||||
break;
|
||||
case 4:
|
||||
*(u32 *)value = (u32)a0;
|
||||
break;
|
||||
case 8:
|
||||
*(u64 *)value = a0;
|
||||
break;
|
||||
default:
|
||||
BUG();
|
||||
break;
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
int vnic_dev_stats_clear(struct vnic_dev *vdev)
|
||||
{
|
||||
u64 a0 = 0, a1 = 0;
|
||||
int wait = 1000;
|
||||
return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
|
||||
{
|
||||
u64 a0, a1;
|
||||
int wait = 1000;
|
||||
|
||||
if (!vdev->stats) {
|
||||
vdev->stats = pci_alloc_consistent(vdev->pdev,
|
||||
sizeof(struct vnic_stats), &vdev->stats_pa);
|
||||
if (!vdev->stats)
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
*stats = vdev->stats;
|
||||
a0 = vdev->stats_pa;
|
||||
a1 = sizeof(struct vnic_stats);
|
||||
|
||||
return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_close(struct vnic_dev *vdev)
|
||||
{
|
||||
u64 a0 = 0, a1 = 0;
|
||||
int wait = 1000;
|
||||
return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_enable(struct vnic_dev *vdev)
|
||||
{
|
||||
u64 a0 = 0, a1 = 0;
|
||||
int wait = 1000;
|
||||
return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_disable(struct vnic_dev *vdev)
|
||||
{
|
||||
u64 a0 = 0, a1 = 0;
|
||||
int wait = 1000;
|
||||
return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_open(struct vnic_dev *vdev, int arg)
|
||||
{
|
||||
u64 a0 = (u32)arg, a1 = 0;
|
||||
int wait = 1000;
|
||||
return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
|
||||
{
|
||||
u64 a0 = 0, a1 = 0;
|
||||
int wait = 1000;
|
||||
int err;
|
||||
|
||||
*done = 0;
|
||||
|
||||
err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
*done = (a0 == 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
|
||||
{
|
||||
u64 a0 = (u32)arg, a1 = 0;
|
||||
int wait = 1000;
|
||||
return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
|
||||
{
|
||||
u64 a0 = 0, a1 = 0;
|
||||
int wait = 1000;
|
||||
int err;
|
||||
|
||||
*done = 0;
|
||||
|
||||
err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
*done = (a0 == 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int vnic_dev_hang_notify(struct vnic_dev *vdev)
|
||||
{
|
||||
u64 a0, a1;
|
||||
int wait = 1000;
|
||||
return vnic_dev_cmd(vdev, CMD_HANG_NOTIFY, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
|
||||
{
|
||||
u64 a0, a1;
|
||||
int wait = 1000;
|
||||
int err, i;
|
||||
|
||||
for (i = 0; i < ETH_ALEN; i++)
|
||||
mac_addr[i] = 0;
|
||||
|
||||
err = vnic_dev_cmd(vdev, CMD_MAC_ADDR, &a0, &a1, wait);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
for (i = 0; i < ETH_ALEN; i++)
|
||||
mac_addr[i] = ((u8 *)&a0)[i];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
|
||||
int broadcast, int promisc, int allmulti)
|
||||
{
|
||||
u64 a0, a1 = 0;
|
||||
int wait = 1000;
|
||||
int err;
|
||||
|
||||
a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
|
||||
(multicast ? CMD_PFILTER_MULTICAST : 0) |
|
||||
(broadcast ? CMD_PFILTER_BROADCAST : 0) |
|
||||
(promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
|
||||
(allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
|
||||
|
||||
err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
|
||||
if (err)
|
||||
printk(KERN_ERR "Can't set packet filter\n");
|
||||
}
|
||||
|
||||
void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
|
||||
{
|
||||
u64 a0 = 0, a1 = 0;
|
||||
int wait = 1000;
|
||||
int err;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ETH_ALEN; i++)
|
||||
((u8 *)&a0)[i] = addr[i];
|
||||
|
||||
err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
|
||||
if (err)
|
||||
printk(KERN_ERR
|
||||
"Can't add addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
|
||||
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
|
||||
err);
|
||||
}
|
||||
|
||||
void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
|
||||
{
|
||||
u64 a0 = 0, a1 = 0;
|
||||
int wait = 1000;
|
||||
int err;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ETH_ALEN; i++)
|
||||
((u8 *)&a0)[i] = addr[i];
|
||||
|
||||
err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
|
||||
if (err)
|
||||
printk(KERN_ERR
|
||||
"Can't del addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
|
||||
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
|
||||
err);
|
||||
}
|
||||
|
||||
int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
|
||||
{
|
||||
u64 a0, a1;
|
||||
int wait = 1000;
|
||||
|
||||
if (!vdev->notify) {
|
||||
vdev->notify = pci_alloc_consistent(vdev->pdev,
|
||||
sizeof(struct vnic_devcmd_notify),
|
||||
&vdev->notify_pa);
|
||||
if (!vdev->notify)
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
a0 = vdev->notify_pa;
|
||||
a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
|
||||
a1 += sizeof(struct vnic_devcmd_notify);
|
||||
|
||||
return vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
void vnic_dev_notify_unset(struct vnic_dev *vdev)
|
||||
{
|
||||
u64 a0, a1;
|
||||
int wait = 1000;
|
||||
|
||||
a0 = 0; /* paddr = 0 to unset notify buffer */
|
||||
a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
|
||||
a1 += sizeof(struct vnic_devcmd_notify);
|
||||
|
||||
vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
static int vnic_dev_notify_ready(struct vnic_dev *vdev)
|
||||
{
|
||||
u32 *words;
|
||||
unsigned int nwords = sizeof(struct vnic_devcmd_notify) / 4;
|
||||
unsigned int i;
|
||||
u32 csum;
|
||||
|
||||
if (!vdev->notify)
|
||||
return 0;
|
||||
|
||||
do {
|
||||
csum = 0;
|
||||
memcpy(&vdev->notify_copy, vdev->notify,
|
||||
sizeof(struct vnic_devcmd_notify));
|
||||
words = (u32 *)&vdev->notify_copy;
|
||||
for (i = 1; i < nwords; i++)
|
||||
csum += words[i];
|
||||
} while (csum != words[0]);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int vnic_dev_init(struct vnic_dev *vdev, int arg)
|
||||
{
|
||||
u64 a0 = (u32)arg, a1 = 0;
|
||||
int wait = 1000;
|
||||
return vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
|
||||
}
|
||||
|
||||
int vnic_dev_link_status(struct vnic_dev *vdev)
|
||||
{
|
||||
if (vdev->linkstatus)
|
||||
return *vdev->linkstatus;
|
||||
|
||||
if (!vnic_dev_notify_ready(vdev))
|
||||
return 0;
|
||||
|
||||
return vdev->notify_copy.link_state;
|
||||
}
|
||||
|
||||
u32 vnic_dev_port_speed(struct vnic_dev *vdev)
|
||||
{
|
||||
if (!vnic_dev_notify_ready(vdev))
|
||||
return 0;
|
||||
|
||||
return vdev->notify_copy.port_speed;
|
||||
}
|
||||
|
||||
u32 vnic_dev_msg_lvl(struct vnic_dev *vdev)
|
||||
{
|
||||
if (!vnic_dev_notify_ready(vdev))
|
||||
return 0;
|
||||
|
||||
return vdev->notify_copy.msglvl;
|
||||
}
|
||||
|
||||
u32 vnic_dev_mtu(struct vnic_dev *vdev)
|
||||
{
|
||||
if (!vnic_dev_notify_ready(vdev))
|
||||
return 0;
|
||||
|
||||
return vdev->notify_copy.mtu;
|
||||
}
|
||||
|
||||
u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev)
|
||||
{
|
||||
if (!vnic_dev_notify_ready(vdev))
|
||||
return 0;
|
||||
|
||||
return vdev->notify_copy.link_down_cnt;
|
||||
}
|
||||
|
||||
void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
|
||||
enum vnic_dev_intr_mode intr_mode)
|
||||
{
|
||||
vdev->intr_mode = intr_mode;
|
||||
}
|
||||
|
||||
enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
|
||||
struct vnic_dev *vdev)
|
||||
{
|
||||
return vdev->intr_mode;
|
||||
}
|
||||
|
||||
void vnic_dev_unregister(struct vnic_dev *vdev)
|
||||
{
|
||||
if (vdev) {
|
||||
if (vdev->notify)
|
||||
pci_free_consistent(vdev->pdev,
|
||||
sizeof(struct vnic_devcmd_notify),
|
||||
vdev->notify,
|
||||
vdev->notify_pa);
|
||||
if (vdev->linkstatus)
|
||||
pci_free_consistent(vdev->pdev,
|
||||
sizeof(u32),
|
||||
vdev->linkstatus,
|
||||
vdev->linkstatus_pa);
|
||||
if (vdev->stats)
|
||||
pci_free_consistent(vdev->pdev,
|
||||
sizeof(struct vnic_dev),
|
||||
vdev->stats, vdev->stats_pa);
|
||||
if (vdev->fw_info)
|
||||
pci_free_consistent(vdev->pdev,
|
||||
sizeof(struct vnic_devcmd_fw_info),
|
||||
vdev->fw_info, vdev->fw_info_pa);
|
||||
kfree(vdev);
|
||||
}
|
||||
}
|
||||
|
||||
struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
|
||||
void *priv, struct pci_dev *pdev, struct vnic_dev_bar *bar)
|
||||
{
|
||||
if (!vdev) {
|
||||
vdev = kzalloc(sizeof(struct vnic_dev), GFP_KERNEL);
|
||||
if (!vdev)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
vdev->priv = priv;
|
||||
vdev->pdev = pdev;
|
||||
|
||||
if (vnic_dev_discover_res(vdev, bar))
|
||||
goto err_out;
|
||||
|
||||
vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
|
||||
if (!vdev->devcmd)
|
||||
goto err_out;
|
||||
|
||||
return vdev;
|
||||
|
||||
err_out:
|
||||
vnic_dev_unregister(vdev);
|
||||
return NULL;
|
||||
}
|
161
drivers/scsi/fnic/vnic_dev.h
Normal file
161
drivers/scsi/fnic/vnic_dev.h
Normal file
|
@ -0,0 +1,161 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_DEV_H_
|
||||
#define _VNIC_DEV_H_
|
||||
|
||||
#include "vnic_resource.h"
|
||||
#include "vnic_devcmd.h"
|
||||
|
||||
/*
|
||||
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
|
||||
* Driver) when both are built with CONFIG options =y
|
||||
*/
|
||||
#define vnic_dev_priv fnic_dev_priv
|
||||
#define vnic_dev_get_res_count fnic_dev_get_res_count
|
||||
#define vnic_dev_get_res fnic_dev_get_res
|
||||
#define vnic_dev_desc_ring_size fnic_dev_desc_ring_siz
|
||||
#define vnic_dev_clear_desc_ring fnic_dev_clear_desc_ring
|
||||
#define vnic_dev_alloc_desc_ring fnic_dev_alloc_desc_ring
|
||||
#define vnic_dev_free_desc_ring fnic_dev_free_desc_ring
|
||||
#define vnic_dev_cmd fnic_dev_cmd
|
||||
#define vnic_dev_fw_info fnic_dev_fw_info
|
||||
#define vnic_dev_spec fnic_dev_spec
|
||||
#define vnic_dev_stats_clear fnic_dev_stats_clear
|
||||
#define vnic_dev_stats_dump fnic_dev_stats_dump
|
||||
#define vnic_dev_hang_notify fnic_dev_hang_notify
|
||||
#define vnic_dev_packet_filter fnic_dev_packet_filter
|
||||
#define vnic_dev_add_addr fnic_dev_add_addr
|
||||
#define vnic_dev_del_addr fnic_dev_del_addr
|
||||
#define vnic_dev_mac_addr fnic_dev_mac_addr
|
||||
#define vnic_dev_notify_set fnic_dev_notify_set
|
||||
#define vnic_dev_notify_unset fnic_dev_notify_unset
|
||||
#define vnic_dev_link_status fnic_dev_link_status
|
||||
#define vnic_dev_port_speed fnic_dev_port_speed
|
||||
#define vnic_dev_msg_lvl fnic_dev_msg_lvl
|
||||
#define vnic_dev_mtu fnic_dev_mtu
|
||||
#define vnic_dev_link_down_cnt fnic_dev_link_down_cnt
|
||||
#define vnic_dev_close fnic_dev_close
|
||||
#define vnic_dev_enable fnic_dev_enable
|
||||
#define vnic_dev_disable fnic_dev_disable
|
||||
#define vnic_dev_open fnic_dev_open
|
||||
#define vnic_dev_open_done fnic_dev_open_done
|
||||
#define vnic_dev_init fnic_dev_init
|
||||
#define vnic_dev_soft_reset fnic_dev_soft_reset
|
||||
#define vnic_dev_soft_reset_done fnic_dev_soft_reset_done
|
||||
#define vnic_dev_set_intr_mode fnic_dev_set_intr_mode
|
||||
#define vnic_dev_get_intr_mode fnic_dev_get_intr_mode
|
||||
#define vnic_dev_unregister fnic_dev_unregister
|
||||
#define vnic_dev_register fnic_dev_register
|
||||
|
||||
#ifndef VNIC_PADDR_TARGET
|
||||
#define VNIC_PADDR_TARGET 0x0000000000000000ULL
|
||||
#endif
|
||||
|
||||
#ifndef readq
|
||||
static inline u64 readq(void __iomem *reg)
|
||||
{
|
||||
return ((u64)readl(reg + 0x4UL) << 32) | (u64)readl(reg);
|
||||
}
|
||||
|
||||
static inline void writeq(u64 val, void __iomem *reg)
|
||||
{
|
||||
writel(val & 0xffffffff, reg);
|
||||
writel(val >> 32, reg + 0x4UL);
|
||||
}
|
||||
#endif
|
||||
|
||||
enum vnic_dev_intr_mode {
|
||||
VNIC_DEV_INTR_MODE_UNKNOWN,
|
||||
VNIC_DEV_INTR_MODE_INTX,
|
||||
VNIC_DEV_INTR_MODE_MSI,
|
||||
VNIC_DEV_INTR_MODE_MSIX,
|
||||
};
|
||||
|
||||
struct vnic_dev_bar {
|
||||
void __iomem *vaddr;
|
||||
dma_addr_t bus_addr;
|
||||
unsigned long len;
|
||||
};
|
||||
|
||||
struct vnic_dev_ring {
|
||||
void *descs;
|
||||
size_t size;
|
||||
dma_addr_t base_addr;
|
||||
size_t base_align;
|
||||
void *descs_unaligned;
|
||||
size_t size_unaligned;
|
||||
dma_addr_t base_addr_unaligned;
|
||||
unsigned int desc_size;
|
||||
unsigned int desc_count;
|
||||
unsigned int desc_avail;
|
||||
};
|
||||
|
||||
struct vnic_dev;
|
||||
struct vnic_stats;
|
||||
|
||||
void *vnic_dev_priv(struct vnic_dev *vdev);
|
||||
unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
|
||||
enum vnic_res_type type);
|
||||
void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
|
||||
unsigned int index);
|
||||
unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
|
||||
unsigned int desc_count,
|
||||
unsigned int desc_size);
|
||||
void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
|
||||
int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
|
||||
unsigned int desc_count, unsigned int desc_size);
|
||||
void vnic_dev_free_desc_ring(struct vnic_dev *vdev,
|
||||
struct vnic_dev_ring *ring);
|
||||
int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
|
||||
u64 *a0, u64 *a1, int wait);
|
||||
int vnic_dev_fw_info(struct vnic_dev *vdev,
|
||||
struct vnic_devcmd_fw_info **fw_info);
|
||||
int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset,
|
||||
unsigned int size, void *value);
|
||||
int vnic_dev_stats_clear(struct vnic_dev *vdev);
|
||||
int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats);
|
||||
int vnic_dev_hang_notify(struct vnic_dev *vdev);
|
||||
void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
|
||||
int broadcast, int promisc, int allmulti);
|
||||
void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr);
|
||||
void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr);
|
||||
int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr);
|
||||
int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr);
|
||||
void vnic_dev_notify_unset(struct vnic_dev *vdev);
|
||||
int vnic_dev_link_status(struct vnic_dev *vdev);
|
||||
u32 vnic_dev_port_speed(struct vnic_dev *vdev);
|
||||
u32 vnic_dev_msg_lvl(struct vnic_dev *vdev);
|
||||
u32 vnic_dev_mtu(struct vnic_dev *vdev);
|
||||
u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev);
|
||||
int vnic_dev_close(struct vnic_dev *vdev);
|
||||
int vnic_dev_enable(struct vnic_dev *vdev);
|
||||
int vnic_dev_disable(struct vnic_dev *vdev);
|
||||
int vnic_dev_open(struct vnic_dev *vdev, int arg);
|
||||
int vnic_dev_open_done(struct vnic_dev *vdev, int *done);
|
||||
int vnic_dev_init(struct vnic_dev *vdev, int arg);
|
||||
int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg);
|
||||
int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done);
|
||||
void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
|
||||
enum vnic_dev_intr_mode intr_mode);
|
||||
enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev);
|
||||
void vnic_dev_unregister(struct vnic_dev *vdev);
|
||||
struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
|
||||
void *priv, struct pci_dev *pdev,
|
||||
struct vnic_dev_bar *bar);
|
||||
|
||||
#endif /* _VNIC_DEV_H_ */
|
281
drivers/scsi/fnic/vnic_devcmd.h
Normal file
281
drivers/scsi/fnic/vnic_devcmd.h
Normal file
|
@ -0,0 +1,281 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_DEVCMD_H_
|
||||
#define _VNIC_DEVCMD_H_
|
||||
|
||||
#define _CMD_NBITS 14
|
||||
#define _CMD_VTYPEBITS 10
|
||||
#define _CMD_FLAGSBITS 6
|
||||
#define _CMD_DIRBITS 2
|
||||
|
||||
#define _CMD_NMASK ((1 << _CMD_NBITS)-1)
|
||||
#define _CMD_VTYPEMASK ((1 << _CMD_VTYPEBITS)-1)
|
||||
#define _CMD_FLAGSMASK ((1 << _CMD_FLAGSBITS)-1)
|
||||
#define _CMD_DIRMASK ((1 << _CMD_DIRBITS)-1)
|
||||
|
||||
#define _CMD_NSHIFT 0
|
||||
#define _CMD_VTYPESHIFT (_CMD_NSHIFT+_CMD_NBITS)
|
||||
#define _CMD_FLAGSSHIFT (_CMD_VTYPESHIFT+_CMD_VTYPEBITS)
|
||||
#define _CMD_DIRSHIFT (_CMD_FLAGSSHIFT+_CMD_FLAGSBITS)
|
||||
|
||||
/*
|
||||
* Direction bits (from host perspective).
|
||||
*/
|
||||
#define _CMD_DIR_NONE 0U
|
||||
#define _CMD_DIR_WRITE 1U
|
||||
#define _CMD_DIR_READ 2U
|
||||
#define _CMD_DIR_RW (_CMD_DIR_WRITE | _CMD_DIR_READ)
|
||||
|
||||
/*
|
||||
* Flag bits.
|
||||
*/
|
||||
#define _CMD_FLAGS_NONE 0U
|
||||
#define _CMD_FLAGS_NOWAIT 1U
|
||||
|
||||
/*
|
||||
* vNIC type bits.
|
||||
*/
|
||||
#define _CMD_VTYPE_NONE 0U
|
||||
#define _CMD_VTYPE_ENET 1U
|
||||
#define _CMD_VTYPE_FC 2U
|
||||
#define _CMD_VTYPE_SCSI 4U
|
||||
#define _CMD_VTYPE_ALL (_CMD_VTYPE_ENET | _CMD_VTYPE_FC | _CMD_VTYPE_SCSI)
|
||||
|
||||
/*
|
||||
* Used to create cmds..
|
||||
*/
|
||||
#define _CMDCF(dir, flags, vtype, nr) \
|
||||
(((dir) << _CMD_DIRSHIFT) | \
|
||||
((flags) << _CMD_FLAGSSHIFT) | \
|
||||
((vtype) << _CMD_VTYPESHIFT) | \
|
||||
((nr) << _CMD_NSHIFT))
|
||||
#define _CMDC(dir, vtype, nr) _CMDCF(dir, 0, vtype, nr)
|
||||
#define _CMDCNW(dir, vtype, nr) _CMDCF(dir, _CMD_FLAGS_NOWAIT, vtype, nr)
|
||||
|
||||
/*
|
||||
* Used to decode cmds..
|
||||
*/
|
||||
#define _CMD_DIR(cmd) (((cmd) >> _CMD_DIRSHIFT) & _CMD_DIRMASK)
|
||||
#define _CMD_FLAGS(cmd) (((cmd) >> _CMD_FLAGSSHIFT) & _CMD_FLAGSMASK)
|
||||
#define _CMD_VTYPE(cmd) (((cmd) >> _CMD_VTYPESHIFT) & _CMD_VTYPEMASK)
|
||||
#define _CMD_N(cmd) (((cmd) >> _CMD_NSHIFT) & _CMD_NMASK)
|
||||
|
||||
enum vnic_devcmd_cmd {
|
||||
CMD_NONE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_NONE, 0),
|
||||
|
||||
/* mcpu fw info in mem: (u64)a0=paddr to struct vnic_devcmd_fw_info */
|
||||
CMD_MCPU_FW_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 1),
|
||||
|
||||
/* dev-specific block member:
|
||||
* in: (u16)a0=offset,(u8)a1=size
|
||||
* out: a0=value */
|
||||
CMD_DEV_SPEC = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 2),
|
||||
|
||||
/* stats clear */
|
||||
CMD_STATS_CLEAR = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 3),
|
||||
|
||||
/* stats dump in mem: (u64)a0=paddr to stats area,
|
||||
* (u16)a1=sizeof stats area */
|
||||
CMD_STATS_DUMP = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 4),
|
||||
|
||||
/* set Rx packet filter: (u32)a0=filters (see CMD_PFILTER_*) */
|
||||
CMD_PACKET_FILTER = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 7),
|
||||
|
||||
/* hang detection notification */
|
||||
CMD_HANG_NOTIFY = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 8),
|
||||
|
||||
/* MAC address in (u48)a0 */
|
||||
CMD_MAC_ADDR = _CMDC(_CMD_DIR_READ,
|
||||
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 9),
|
||||
|
||||
/* disable/enable promisc mode: (u8)a0=0/1 */
|
||||
/***** XXX DEPRECATED *****/
|
||||
CMD_PROMISC_MODE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 10),
|
||||
|
||||
/* disable/enable all-multi mode: (u8)a0=0/1 */
|
||||
/***** XXX DEPRECATED *****/
|
||||
CMD_ALLMULTI_MODE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 11),
|
||||
|
||||
/* add addr from (u48)a0 */
|
||||
CMD_ADDR_ADD = _CMDCNW(_CMD_DIR_WRITE,
|
||||
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 12),
|
||||
|
||||
/* del addr from (u48)a0 */
|
||||
CMD_ADDR_DEL = _CMDCNW(_CMD_DIR_WRITE,
|
||||
_CMD_VTYPE_ENET | _CMD_VTYPE_FC, 13),
|
||||
|
||||
/* add VLAN id in (u16)a0 */
|
||||
CMD_VLAN_ADD = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 14),
|
||||
|
||||
/* del VLAN id in (u16)a0 */
|
||||
CMD_VLAN_DEL = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 15),
|
||||
|
||||
/* nic_cfg in (u32)a0 */
|
||||
CMD_NIC_CFG = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 16),
|
||||
|
||||
/* union vnic_rss_key in mem: (u64)a0=paddr, (u16)a1=len */
|
||||
CMD_RSS_KEY = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 17),
|
||||
|
||||
/* union vnic_rss_cpu in mem: (u64)a0=paddr, (u16)a1=len */
|
||||
CMD_RSS_CPU = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 18),
|
||||
|
||||
/* initiate softreset */
|
||||
CMD_SOFT_RESET = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 19),
|
||||
|
||||
/* softreset status:
|
||||
* out: a0=0 reset complete, a0=1 reset in progress */
|
||||
CMD_SOFT_RESET_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 20),
|
||||
|
||||
/* set struct vnic_devcmd_notify buffer in mem:
|
||||
* in:
|
||||
* (u64)a0=paddr to notify (set paddr=0 to unset)
|
||||
* (u32)a1 & 0x00000000ffffffff=sizeof(struct vnic_devcmd_notify)
|
||||
* (u16)a1 & 0x0000ffff00000000=intr num (-1 for no intr)
|
||||
* out:
|
||||
* (u32)a1 = effective size
|
||||
*/
|
||||
CMD_NOTIFY = _CMDC(_CMD_DIR_RW, _CMD_VTYPE_ALL, 21),
|
||||
|
||||
/* UNDI API: (u64)a0=paddr to s_PXENV_UNDI_ struct,
|
||||
* (u8)a1=PXENV_UNDI_xxx */
|
||||
CMD_UNDI = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 22),
|
||||
|
||||
/* initiate open sequence (u32)a0=flags (see CMD_OPENF_*) */
|
||||
CMD_OPEN = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 23),
|
||||
|
||||
/* open status:
|
||||
* out: a0=0 open complete, a0=1 open in progress */
|
||||
CMD_OPEN_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 24),
|
||||
|
||||
/* close vnic */
|
||||
CMD_CLOSE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 25),
|
||||
|
||||
/* initialize virtual link: (u32)a0=flags (see CMD_INITF_*) */
|
||||
CMD_INIT = _CMDCNW(_CMD_DIR_READ, _CMD_VTYPE_ALL, 26),
|
||||
|
||||
/* variant of CMD_INIT, with provisioning info
|
||||
* (u64)a0=paddr of vnic_devcmd_provinfo
|
||||
* (u32)a1=sizeof provision info */
|
||||
CMD_INIT_PROV_INFO = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 27),
|
||||
|
||||
/* enable virtual link */
|
||||
CMD_ENABLE = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 28),
|
||||
|
||||
/* disable virtual link */
|
||||
CMD_DISABLE = _CMDC(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 29),
|
||||
|
||||
/* stats dump all vnics on uplink in mem: (u64)a0=paddr (u32)a1=uif */
|
||||
CMD_STATS_DUMP_ALL = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_ALL, 30),
|
||||
|
||||
/* init status:
|
||||
* out: a0=0 init complete, a0=1 init in progress
|
||||
* if a0=0, a1=errno */
|
||||
CMD_INIT_STATUS = _CMDC(_CMD_DIR_READ, _CMD_VTYPE_ALL, 31),
|
||||
|
||||
/* INT13 API: (u64)a0=paddr to vnic_int13_params struct
|
||||
* (u8)a1=INT13_CMD_xxx */
|
||||
CMD_INT13 = _CMDC(_CMD_DIR_WRITE, _CMD_VTYPE_FC, 32),
|
||||
|
||||
/* logical uplink enable/disable: (u64)a0: 0/1=disable/enable */
|
||||
CMD_LOGICAL_UPLINK = _CMDCNW(_CMD_DIR_WRITE, _CMD_VTYPE_ENET, 33),
|
||||
|
||||
/* undo initialize of virtual link */
|
||||
CMD_DEINIT = _CMDCNW(_CMD_DIR_NONE, _CMD_VTYPE_ALL, 34),
|
||||
};
|
||||
|
||||
/* flags for CMD_OPEN */
|
||||
#define CMD_OPENF_OPROM 0x1 /* open coming from option rom */
|
||||
|
||||
/* flags for CMD_INIT */
|
||||
#define CMD_INITF_DEFAULT_MAC 0x1 /* init with default mac addr */
|
||||
|
||||
/* flags for CMD_PACKET_FILTER */
|
||||
#define CMD_PFILTER_DIRECTED 0x01
|
||||
#define CMD_PFILTER_MULTICAST 0x02
|
||||
#define CMD_PFILTER_BROADCAST 0x04
|
||||
#define CMD_PFILTER_PROMISCUOUS 0x08
|
||||
#define CMD_PFILTER_ALL_MULTICAST 0x10
|
||||
|
||||
enum vnic_devcmd_status {
|
||||
STAT_NONE = 0,
|
||||
STAT_BUSY = 1 << 0, /* cmd in progress */
|
||||
STAT_ERROR = 1 << 1, /* last cmd caused error (code in a0) */
|
||||
};
|
||||
|
||||
enum vnic_devcmd_error {
|
||||
ERR_SUCCESS = 0,
|
||||
ERR_EINVAL = 1,
|
||||
ERR_EFAULT = 2,
|
||||
ERR_EPERM = 3,
|
||||
ERR_EBUSY = 4,
|
||||
ERR_ECMDUNKNOWN = 5,
|
||||
ERR_EBADSTATE = 6,
|
||||
ERR_ENOMEM = 7,
|
||||
ERR_ETIMEDOUT = 8,
|
||||
ERR_ELINKDOWN = 9,
|
||||
};
|
||||
|
||||
struct vnic_devcmd_fw_info {
|
||||
char fw_version[32];
|
||||
char fw_build[32];
|
||||
char hw_version[32];
|
||||
char hw_serial_number[32];
|
||||
};
|
||||
|
||||
struct vnic_devcmd_notify {
|
||||
u32 csum; /* checksum over following words */
|
||||
|
||||
u32 link_state; /* link up == 1 */
|
||||
u32 port_speed; /* effective port speed (rate limit) */
|
||||
u32 mtu; /* MTU */
|
||||
u32 msglvl; /* requested driver msg lvl */
|
||||
u32 uif; /* uplink interface */
|
||||
u32 status; /* status bits (see VNIC_STF_*) */
|
||||
u32 error; /* error code (see ERR_*) for first ERR */
|
||||
u32 link_down_cnt; /* running count of link down transitions */
|
||||
};
|
||||
#define VNIC_STF_FATAL_ERR 0x0001 /* fatal fw error */
|
||||
|
||||
struct vnic_devcmd_provinfo {
|
||||
u8 oui[3];
|
||||
u8 type;
|
||||
u8 data[0];
|
||||
};
|
||||
|
||||
/*
|
||||
* Writing cmd register causes STAT_BUSY to get set in status register.
|
||||
* When cmd completes, STAT_BUSY will be cleared.
|
||||
*
|
||||
* If cmd completed successfully STAT_ERROR will be clear
|
||||
* and args registers contain cmd-specific results.
|
||||
*
|
||||
* If cmd error, STAT_ERROR will be set and args[0] contains error code.
|
||||
*
|
||||
* status register is read-only. While STAT_BUSY is set,
|
||||
* all other register contents are read-only.
|
||||
*/
|
||||
|
||||
/* Make sizeof(vnic_devcmd) a power-of-2 for I/O BAR. */
|
||||
#define VNIC_DEVCMD_NARGS 15
|
||||
struct vnic_devcmd {
|
||||
u32 status; /* RO */
|
||||
u32 cmd; /* RW */
|
||||
u64 args[VNIC_DEVCMD_NARGS]; /* RW cmd args (little-endian) */
|
||||
};
|
||||
|
||||
#endif /* _VNIC_DEVCMD_H_ */
|
60
drivers/scsi/fnic/vnic_intr.c
Normal file
60
drivers/scsi/fnic/vnic_intr.c
Normal file
|
@ -0,0 +1,60 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/delay.h>
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_intr.h"
|
||||
|
||||
void vnic_intr_free(struct vnic_intr *intr)
|
||||
{
|
||||
intr->ctrl = NULL;
|
||||
}
|
||||
|
||||
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
|
||||
unsigned int index)
|
||||
{
|
||||
intr->index = index;
|
||||
intr->vdev = vdev;
|
||||
|
||||
intr->ctrl = vnic_dev_get_res(vdev, RES_TYPE_INTR_CTRL, index);
|
||||
if (!intr->ctrl) {
|
||||
printk(KERN_ERR "Failed to hook INTR[%d].ctrl resource\n",
|
||||
index);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
|
||||
unsigned int coalescing_type, unsigned int mask_on_assertion)
|
||||
{
|
||||
iowrite32(coalescing_timer, &intr->ctrl->coalescing_timer);
|
||||
iowrite32(coalescing_type, &intr->ctrl->coalescing_type);
|
||||
iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion);
|
||||
iowrite32(0, &intr->ctrl->int_credits);
|
||||
}
|
||||
|
||||
void vnic_intr_clean(struct vnic_intr *intr)
|
||||
{
|
||||
iowrite32(0, &intr->ctrl->int_credits);
|
||||
}
|
118
drivers/scsi/fnic/vnic_intr.h
Normal file
118
drivers/scsi/fnic/vnic_intr.h
Normal file
|
@ -0,0 +1,118 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_INTR_H_
|
||||
#define _VNIC_INTR_H_
|
||||
|
||||
#include <linux/pci.h>
|
||||
#include "vnic_dev.h"
|
||||
|
||||
/*
|
||||
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
|
||||
* Driver) when both are built with CONFIG options =y
|
||||
*/
|
||||
#define vnic_intr_unmask fnic_intr_unmask
|
||||
#define vnic_intr_mask fnic_intr_mask
|
||||
#define vnic_intr_return_credits fnic_intr_return_credits
|
||||
#define vnic_intr_credits fnic_intr_credits
|
||||
#define vnic_intr_return_all_credits fnic_intr_return_all_credits
|
||||
#define vnic_intr_legacy_pba fnic_intr_legacy_pba
|
||||
#define vnic_intr_free fnic_intr_free
|
||||
#define vnic_intr_alloc fnic_intr_alloc
|
||||
#define vnic_intr_init fnic_intr_init
|
||||
#define vnic_intr_clean fnic_intr_clean
|
||||
|
||||
#define VNIC_INTR_TIMER_MAX 0xffff
|
||||
|
||||
#define VNIC_INTR_TIMER_TYPE_ABS 0
|
||||
#define VNIC_INTR_TIMER_TYPE_QUIET 1
|
||||
|
||||
/* Interrupt control */
|
||||
struct vnic_intr_ctrl {
|
||||
u32 coalescing_timer; /* 0x00 */
|
||||
u32 pad0;
|
||||
u32 coalescing_value; /* 0x08 */
|
||||
u32 pad1;
|
||||
u32 coalescing_type; /* 0x10 */
|
||||
u32 pad2;
|
||||
u32 mask_on_assertion; /* 0x18 */
|
||||
u32 pad3;
|
||||
u32 mask; /* 0x20 */
|
||||
u32 pad4;
|
||||
u32 int_credits; /* 0x28 */
|
||||
u32 pad5;
|
||||
u32 int_credit_return; /* 0x30 */
|
||||
u32 pad6;
|
||||
};
|
||||
|
||||
struct vnic_intr {
|
||||
unsigned int index;
|
||||
struct vnic_dev *vdev;
|
||||
struct vnic_intr_ctrl __iomem *ctrl; /* memory-mapped */
|
||||
};
|
||||
|
||||
static inline void vnic_intr_unmask(struct vnic_intr *intr)
|
||||
{
|
||||
iowrite32(0, &intr->ctrl->mask);
|
||||
}
|
||||
|
||||
static inline void vnic_intr_mask(struct vnic_intr *intr)
|
||||
{
|
||||
iowrite32(1, &intr->ctrl->mask);
|
||||
}
|
||||
|
||||
static inline void vnic_intr_return_credits(struct vnic_intr *intr,
|
||||
unsigned int credits, int unmask, int reset_timer)
|
||||
{
|
||||
#define VNIC_INTR_UNMASK_SHIFT 16
|
||||
#define VNIC_INTR_RESET_TIMER_SHIFT 17
|
||||
|
||||
u32 int_credit_return = (credits & 0xffff) |
|
||||
(unmask ? (1 << VNIC_INTR_UNMASK_SHIFT) : 0) |
|
||||
(reset_timer ? (1 << VNIC_INTR_RESET_TIMER_SHIFT) : 0);
|
||||
|
||||
iowrite32(int_credit_return, &intr->ctrl->int_credit_return);
|
||||
}
|
||||
|
||||
static inline unsigned int vnic_intr_credits(struct vnic_intr *intr)
|
||||
{
|
||||
return ioread32(&intr->ctrl->int_credits);
|
||||
}
|
||||
|
||||
static inline void vnic_intr_return_all_credits(struct vnic_intr *intr)
|
||||
{
|
||||
unsigned int credits = vnic_intr_credits(intr);
|
||||
int unmask = 1;
|
||||
int reset_timer = 1;
|
||||
|
||||
vnic_intr_return_credits(intr, credits, unmask, reset_timer);
|
||||
}
|
||||
|
||||
static inline u32 vnic_intr_legacy_pba(u32 __iomem *legacy_pba)
|
||||
{
|
||||
/* read PBA without clearing */
|
||||
return ioread32(legacy_pba);
|
||||
}
|
||||
|
||||
void vnic_intr_free(struct vnic_intr *intr);
|
||||
int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr,
|
||||
unsigned int index);
|
||||
void vnic_intr_init(struct vnic_intr *intr, unsigned int coalescing_timer,
|
||||
unsigned int coalescing_type, unsigned int mask_on_assertion);
|
||||
void vnic_intr_clean(struct vnic_intr *intr);
|
||||
|
||||
#endif /* _VNIC_INTR_H_ */
|
69
drivers/scsi/fnic/vnic_nic.h
Normal file
69
drivers/scsi/fnic/vnic_nic.h
Normal file
|
@ -0,0 +1,69 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_NIC_H_
|
||||
#define _VNIC_NIC_H_
|
||||
|
||||
/*
|
||||
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
|
||||
* Driver) when both are built with CONFIG options =y
|
||||
*/
|
||||
#define vnic_set_nic_cfg fnic_set_nic_cfg
|
||||
|
||||
#define NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD 0xffUL
|
||||
#define NIC_CFG_RSS_DEFAULT_CPU_SHIFT 0
|
||||
#define NIC_CFG_RSS_HASH_TYPE (0xffUL << 8)
|
||||
#define NIC_CFG_RSS_HASH_TYPE_MASK_FIELD 0xffUL
|
||||
#define NIC_CFG_RSS_HASH_TYPE_SHIFT 8
|
||||
#define NIC_CFG_RSS_HASH_BITS (7UL << 16)
|
||||
#define NIC_CFG_RSS_HASH_BITS_MASK_FIELD 7UL
|
||||
#define NIC_CFG_RSS_HASH_BITS_SHIFT 16
|
||||
#define NIC_CFG_RSS_BASE_CPU (7UL << 19)
|
||||
#define NIC_CFG_RSS_BASE_CPU_MASK_FIELD 7UL
|
||||
#define NIC_CFG_RSS_BASE_CPU_SHIFT 19
|
||||
#define NIC_CFG_RSS_ENABLE (1UL << 22)
|
||||
#define NIC_CFG_RSS_ENABLE_MASK_FIELD 1UL
|
||||
#define NIC_CFG_RSS_ENABLE_SHIFT 22
|
||||
#define NIC_CFG_TSO_IPID_SPLIT_EN (1UL << 23)
|
||||
#define NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD 1UL
|
||||
#define NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT 23
|
||||
#define NIC_CFG_IG_VLAN_STRIP_EN (1UL << 24)
|
||||
#define NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD 1UL
|
||||
#define NIC_CFG_IG_VLAN_STRIP_EN_SHIFT 24
|
||||
|
||||
static inline void vnic_set_nic_cfg(u32 *nic_cfg,
|
||||
u8 rss_default_cpu, u8 rss_hash_type,
|
||||
u8 rss_hash_bits, u8 rss_base_cpu,
|
||||
u8 rss_enable, u8 tso_ipid_split_en,
|
||||
u8 ig_vlan_strip_en)
|
||||
{
|
||||
*nic_cfg = (rss_default_cpu & NIC_CFG_RSS_DEFAULT_CPU_MASK_FIELD) |
|
||||
((rss_hash_type & NIC_CFG_RSS_HASH_TYPE_MASK_FIELD)
|
||||
<< NIC_CFG_RSS_HASH_TYPE_SHIFT) |
|
||||
((rss_hash_bits & NIC_CFG_RSS_HASH_BITS_MASK_FIELD)
|
||||
<< NIC_CFG_RSS_HASH_BITS_SHIFT) |
|
||||
((rss_base_cpu & NIC_CFG_RSS_BASE_CPU_MASK_FIELD)
|
||||
<< NIC_CFG_RSS_BASE_CPU_SHIFT) |
|
||||
((rss_enable & NIC_CFG_RSS_ENABLE_MASK_FIELD)
|
||||
<< NIC_CFG_RSS_ENABLE_SHIFT) |
|
||||
((tso_ipid_split_en & NIC_CFG_TSO_IPID_SPLIT_EN_MASK_FIELD)
|
||||
<< NIC_CFG_TSO_IPID_SPLIT_EN_SHIFT) |
|
||||
((ig_vlan_strip_en & NIC_CFG_IG_VLAN_STRIP_EN_MASK_FIELD)
|
||||
<< NIC_CFG_IG_VLAN_STRIP_EN_SHIFT);
|
||||
}
|
||||
|
||||
#endif /* _VNIC_NIC_H_ */
|
61
drivers/scsi/fnic/vnic_resource.h
Normal file
61
drivers/scsi/fnic/vnic_resource.h
Normal file
|
@ -0,0 +1,61 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_RESOURCE_H_
|
||||
#define _VNIC_RESOURCE_H_
|
||||
|
||||
#define VNIC_RES_MAGIC 0x766E6963L /* 'vnic' */
|
||||
#define VNIC_RES_VERSION 0x00000000L
|
||||
|
||||
/* vNIC resource types */
|
||||
enum vnic_res_type {
|
||||
RES_TYPE_EOL, /* End-of-list */
|
||||
RES_TYPE_WQ, /* Work queues */
|
||||
RES_TYPE_RQ, /* Receive queues */
|
||||
RES_TYPE_CQ, /* Completion queues */
|
||||
RES_TYPE_RSVD1,
|
||||
RES_TYPE_NIC_CFG, /* Enet NIC config registers */
|
||||
RES_TYPE_RSVD2,
|
||||
RES_TYPE_RSVD3,
|
||||
RES_TYPE_RSVD4,
|
||||
RES_TYPE_RSVD5,
|
||||
RES_TYPE_INTR_CTRL, /* Interrupt ctrl table */
|
||||
RES_TYPE_INTR_TABLE, /* MSI/MSI-X Interrupt table */
|
||||
RES_TYPE_INTR_PBA, /* MSI/MSI-X PBA table */
|
||||
RES_TYPE_INTR_PBA_LEGACY, /* Legacy intr status */
|
||||
RES_TYPE_RSVD6,
|
||||
RES_TYPE_RSVD7,
|
||||
RES_TYPE_DEVCMD, /* Device command region */
|
||||
RES_TYPE_PASS_THRU_PAGE, /* Pass-thru page */
|
||||
|
||||
RES_TYPE_MAX, /* Count of resource types */
|
||||
};
|
||||
|
||||
struct vnic_resource_header {
|
||||
u32 magic;
|
||||
u32 version;
|
||||
};
|
||||
|
||||
struct vnic_resource {
|
||||
u8 type;
|
||||
u8 bar;
|
||||
u8 pad[2];
|
||||
u32 bar_offset;
|
||||
u32 count;
|
||||
};
|
||||
|
||||
#endif /* _VNIC_RESOURCE_H_ */
|
196
drivers/scsi/fnic/vnic_rq.c
Normal file
196
drivers/scsi/fnic/vnic_rq.c
Normal file
|
@ -0,0 +1,196 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/delay.h>
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_rq.h"
|
||||
|
||||
static int vnic_rq_alloc_bufs(struct vnic_rq *rq)
|
||||
{
|
||||
struct vnic_rq_buf *buf;
|
||||
struct vnic_dev *vdev;
|
||||
unsigned int i, j, count = rq->ring.desc_count;
|
||||
unsigned int blks = VNIC_RQ_BUF_BLKS_NEEDED(count);
|
||||
|
||||
vdev = rq->vdev;
|
||||
|
||||
for (i = 0; i < blks; i++) {
|
||||
rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ, GFP_ATOMIC);
|
||||
if (!rq->bufs[i]) {
|
||||
printk(KERN_ERR "Failed to alloc rq_bufs\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < blks; i++) {
|
||||
buf = rq->bufs[i];
|
||||
for (j = 0; j < VNIC_RQ_BUF_BLK_ENTRIES; j++) {
|
||||
buf->index = i * VNIC_RQ_BUF_BLK_ENTRIES + j;
|
||||
buf->desc = (u8 *)rq->ring.descs +
|
||||
rq->ring.desc_size * buf->index;
|
||||
if (buf->index + 1 == count) {
|
||||
buf->next = rq->bufs[0];
|
||||
break;
|
||||
} else if (j + 1 == VNIC_RQ_BUF_BLK_ENTRIES) {
|
||||
buf->next = rq->bufs[i + 1];
|
||||
} else {
|
||||
buf->next = buf + 1;
|
||||
buf++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
rq->to_use = rq->to_clean = rq->bufs[0];
|
||||
rq->buf_index = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_rq_free(struct vnic_rq *rq)
|
||||
{
|
||||
struct vnic_dev *vdev;
|
||||
unsigned int i;
|
||||
|
||||
vdev = rq->vdev;
|
||||
|
||||
vnic_dev_free_desc_ring(vdev, &rq->ring);
|
||||
|
||||
for (i = 0; i < VNIC_RQ_BUF_BLKS_MAX; i++) {
|
||||
kfree(rq->bufs[i]);
|
||||
rq->bufs[i] = NULL;
|
||||
}
|
||||
|
||||
rq->ctrl = NULL;
|
||||
}
|
||||
|
||||
int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
|
||||
unsigned int desc_count, unsigned int desc_size)
|
||||
{
|
||||
int err;
|
||||
|
||||
rq->index = index;
|
||||
rq->vdev = vdev;
|
||||
|
||||
rq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_RQ, index);
|
||||
if (!rq->ctrl) {
|
||||
printk(KERN_ERR "Failed to hook RQ[%d] resource\n", index);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
vnic_rq_disable(rq);
|
||||
|
||||
err = vnic_dev_alloc_desc_ring(vdev, &rq->ring, desc_count, desc_size);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
err = vnic_rq_alloc_bufs(rq);
|
||||
if (err) {
|
||||
vnic_rq_free(rq);
|
||||
return err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
|
||||
unsigned int error_interrupt_enable,
|
||||
unsigned int error_interrupt_offset)
|
||||
{
|
||||
u64 paddr;
|
||||
u32 fetch_index;
|
||||
|
||||
paddr = (u64)rq->ring.base_addr | VNIC_PADDR_TARGET;
|
||||
writeq(paddr, &rq->ctrl->ring_base);
|
||||
iowrite32(rq->ring.desc_count, &rq->ctrl->ring_size);
|
||||
iowrite32(cq_index, &rq->ctrl->cq_index);
|
||||
iowrite32(error_interrupt_enable, &rq->ctrl->error_interrupt_enable);
|
||||
iowrite32(error_interrupt_offset, &rq->ctrl->error_interrupt_offset);
|
||||
iowrite32(0, &rq->ctrl->dropped_packet_count);
|
||||
iowrite32(0, &rq->ctrl->error_status);
|
||||
|
||||
/* Use current fetch_index as the ring starting point */
|
||||
fetch_index = ioread32(&rq->ctrl->fetch_index);
|
||||
rq->to_use = rq->to_clean =
|
||||
&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
|
||||
[fetch_index % VNIC_RQ_BUF_BLK_ENTRIES];
|
||||
iowrite32(fetch_index, &rq->ctrl->posted_index);
|
||||
|
||||
rq->buf_index = 0;
|
||||
}
|
||||
|
||||
unsigned int vnic_rq_error_status(struct vnic_rq *rq)
|
||||
{
|
||||
return ioread32(&rq->ctrl->error_status);
|
||||
}
|
||||
|
||||
void vnic_rq_enable(struct vnic_rq *rq)
|
||||
{
|
||||
iowrite32(1, &rq->ctrl->enable);
|
||||
}
|
||||
|
||||
int vnic_rq_disable(struct vnic_rq *rq)
|
||||
{
|
||||
unsigned int wait;
|
||||
|
||||
iowrite32(0, &rq->ctrl->enable);
|
||||
|
||||
/* Wait for HW to ACK disable request */
|
||||
for (wait = 0; wait < 100; wait++) {
|
||||
if (!(ioread32(&rq->ctrl->running)))
|
||||
return 0;
|
||||
udelay(1);
|
||||
}
|
||||
|
||||
printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index);
|
||||
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
void vnic_rq_clean(struct vnic_rq *rq,
|
||||
void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf))
|
||||
{
|
||||
struct vnic_rq_buf *buf;
|
||||
u32 fetch_index;
|
||||
|
||||
BUG_ON(ioread32(&rq->ctrl->enable));
|
||||
|
||||
buf = rq->to_clean;
|
||||
|
||||
while (vnic_rq_desc_used(rq) > 0) {
|
||||
|
||||
(*buf_clean)(rq, buf);
|
||||
|
||||
buf = rq->to_clean = buf->next;
|
||||
rq->ring.desc_avail++;
|
||||
}
|
||||
|
||||
/* Use current fetch_index as the ring starting point */
|
||||
fetch_index = ioread32(&rq->ctrl->fetch_index);
|
||||
rq->to_use = rq->to_clean =
|
||||
&rq->bufs[fetch_index / VNIC_RQ_BUF_BLK_ENTRIES]
|
||||
[fetch_index % VNIC_RQ_BUF_BLK_ENTRIES];
|
||||
iowrite32(fetch_index, &rq->ctrl->posted_index);
|
||||
|
||||
rq->buf_index = 0;
|
||||
|
||||
vnic_dev_clear_desc_ring(&rq->ring);
|
||||
}
|
||||
|
235
drivers/scsi/fnic/vnic_rq.h
Normal file
235
drivers/scsi/fnic/vnic_rq.h
Normal file
|
@ -0,0 +1,235 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_RQ_H_
|
||||
#define _VNIC_RQ_H_
|
||||
|
||||
#include <linux/pci.h>
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_cq.h"
|
||||
|
||||
/*
|
||||
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
|
||||
* Driver) when both are built with CONFIG options =y
|
||||
*/
|
||||
#define vnic_rq_desc_avail fnic_rq_desc_avail
|
||||
#define vnic_rq_desc_used fnic_rq_desc_used
|
||||
#define vnic_rq_next_desc fnic_rq_next_desc
|
||||
#define vnic_rq_next_index fnic_rq_next_index
|
||||
#define vnic_rq_next_buf_index fnic_rq_next_buf_index
|
||||
#define vnic_rq_post fnic_rq_post
|
||||
#define vnic_rq_posting_soon fnic_rq_posting_soon
|
||||
#define vnic_rq_return_descs fnic_rq_return_descs
|
||||
#define vnic_rq_service fnic_rq_service
|
||||
#define vnic_rq_fill fnic_rq_fill
|
||||
#define vnic_rq_free fnic_rq_free
|
||||
#define vnic_rq_alloc fnic_rq_alloc
|
||||
#define vnic_rq_init fnic_rq_init
|
||||
#define vnic_rq_error_status fnic_rq_error_status
|
||||
#define vnic_rq_enable fnic_rq_enable
|
||||
#define vnic_rq_disable fnic_rq_disable
|
||||
#define vnic_rq_clean fnic_rq_clean
|
||||
|
||||
/* Receive queue control */
|
||||
struct vnic_rq_ctrl {
|
||||
u64 ring_base; /* 0x00 */
|
||||
u32 ring_size; /* 0x08 */
|
||||
u32 pad0;
|
||||
u32 posted_index; /* 0x10 */
|
||||
u32 pad1;
|
||||
u32 cq_index; /* 0x18 */
|
||||
u32 pad2;
|
||||
u32 enable; /* 0x20 */
|
||||
u32 pad3;
|
||||
u32 running; /* 0x28 */
|
||||
u32 pad4;
|
||||
u32 fetch_index; /* 0x30 */
|
||||
u32 pad5;
|
||||
u32 error_interrupt_enable; /* 0x38 */
|
||||
u32 pad6;
|
||||
u32 error_interrupt_offset; /* 0x40 */
|
||||
u32 pad7;
|
||||
u32 error_status; /* 0x48 */
|
||||
u32 pad8;
|
||||
u32 dropped_packet_count; /* 0x50 */
|
||||
u32 pad9;
|
||||
u32 dropped_packet_count_rc; /* 0x58 */
|
||||
u32 pad10;
|
||||
};
|
||||
|
||||
/* Break the vnic_rq_buf allocations into blocks of 64 entries */
|
||||
#define VNIC_RQ_BUF_BLK_ENTRIES 64
|
||||
#define VNIC_RQ_BUF_BLK_SZ \
|
||||
(VNIC_RQ_BUF_BLK_ENTRIES * sizeof(struct vnic_rq_buf))
|
||||
#define VNIC_RQ_BUF_BLKS_NEEDED(entries) \
|
||||
DIV_ROUND_UP(entries, VNIC_RQ_BUF_BLK_ENTRIES)
|
||||
#define VNIC_RQ_BUF_BLKS_MAX VNIC_RQ_BUF_BLKS_NEEDED(4096)
|
||||
|
||||
struct vnic_rq_buf {
|
||||
struct vnic_rq_buf *next;
|
||||
dma_addr_t dma_addr;
|
||||
void *os_buf;
|
||||
unsigned int os_buf_index;
|
||||
unsigned int len;
|
||||
unsigned int index;
|
||||
void *desc;
|
||||
};
|
||||
|
||||
struct vnic_rq {
|
||||
unsigned int index;
|
||||
struct vnic_dev *vdev;
|
||||
struct vnic_rq_ctrl __iomem *ctrl; /* memory-mapped */
|
||||
struct vnic_dev_ring ring;
|
||||
struct vnic_rq_buf *bufs[VNIC_RQ_BUF_BLKS_MAX];
|
||||
struct vnic_rq_buf *to_use;
|
||||
struct vnic_rq_buf *to_clean;
|
||||
void *os_buf_head;
|
||||
unsigned int buf_index;
|
||||
unsigned int pkts_outstanding;
|
||||
};
|
||||
|
||||
static inline unsigned int vnic_rq_desc_avail(struct vnic_rq *rq)
|
||||
{
|
||||
/* how many does SW own? */
|
||||
return rq->ring.desc_avail;
|
||||
}
|
||||
|
||||
static inline unsigned int vnic_rq_desc_used(struct vnic_rq *rq)
|
||||
{
|
||||
/* how many does HW own? */
|
||||
return rq->ring.desc_count - rq->ring.desc_avail - 1;
|
||||
}
|
||||
|
||||
static inline void *vnic_rq_next_desc(struct vnic_rq *rq)
|
||||
{
|
||||
return rq->to_use->desc;
|
||||
}
|
||||
|
||||
static inline unsigned int vnic_rq_next_index(struct vnic_rq *rq)
|
||||
{
|
||||
return rq->to_use->index;
|
||||
}
|
||||
|
||||
static inline unsigned int vnic_rq_next_buf_index(struct vnic_rq *rq)
|
||||
{
|
||||
return rq->buf_index++;
|
||||
}
|
||||
|
||||
static inline void vnic_rq_post(struct vnic_rq *rq,
|
||||
void *os_buf, unsigned int os_buf_index,
|
||||
dma_addr_t dma_addr, unsigned int len)
|
||||
{
|
||||
struct vnic_rq_buf *buf = rq->to_use;
|
||||
|
||||
buf->os_buf = os_buf;
|
||||
buf->os_buf_index = os_buf_index;
|
||||
buf->dma_addr = dma_addr;
|
||||
buf->len = len;
|
||||
|
||||
buf = buf->next;
|
||||
rq->to_use = buf;
|
||||
rq->ring.desc_avail--;
|
||||
|
||||
/* Move the posted_index every nth descriptor
|
||||
*/
|
||||
|
||||
#ifndef VNIC_RQ_RETURN_RATE
|
||||
#define VNIC_RQ_RETURN_RATE 0xf /* keep 2^n - 1 */
|
||||
#endif
|
||||
|
||||
if ((buf->index & VNIC_RQ_RETURN_RATE) == 0) {
|
||||
/* Adding write memory barrier prevents compiler and/or CPU
|
||||
* reordering, thus avoiding descriptor posting before
|
||||
* descriptor is initialized. Otherwise, hardware can read
|
||||
* stale descriptor fields.
|
||||
*/
|
||||
wmb();
|
||||
iowrite32(buf->index, &rq->ctrl->posted_index);
|
||||
}
|
||||
}
|
||||
|
||||
static inline int vnic_rq_posting_soon(struct vnic_rq *rq)
|
||||
{
|
||||
return (rq->to_use->index & VNIC_RQ_RETURN_RATE) == 0;
|
||||
}
|
||||
|
||||
static inline void vnic_rq_return_descs(struct vnic_rq *rq, unsigned int count)
|
||||
{
|
||||
rq->ring.desc_avail += count;
|
||||
}
|
||||
|
||||
enum desc_return_options {
|
||||
VNIC_RQ_RETURN_DESC,
|
||||
VNIC_RQ_DEFER_RETURN_DESC,
|
||||
};
|
||||
|
||||
static inline void vnic_rq_service(struct vnic_rq *rq,
|
||||
struct cq_desc *cq_desc, u16 completed_index,
|
||||
int desc_return, void (*buf_service)(struct vnic_rq *rq,
|
||||
struct cq_desc *cq_desc, struct vnic_rq_buf *buf,
|
||||
int skipped, void *opaque), void *opaque)
|
||||
{
|
||||
struct vnic_rq_buf *buf;
|
||||
int skipped;
|
||||
|
||||
buf = rq->to_clean;
|
||||
while (1) {
|
||||
|
||||
skipped = (buf->index != completed_index);
|
||||
|
||||
(*buf_service)(rq, cq_desc, buf, skipped, opaque);
|
||||
|
||||
if (desc_return == VNIC_RQ_RETURN_DESC)
|
||||
rq->ring.desc_avail++;
|
||||
|
||||
rq->to_clean = buf->next;
|
||||
|
||||
if (!skipped)
|
||||
break;
|
||||
|
||||
buf = rq->to_clean;
|
||||
}
|
||||
}
|
||||
|
||||
static inline int vnic_rq_fill(struct vnic_rq *rq,
|
||||
int (*buf_fill)(struct vnic_rq *rq))
|
||||
{
|
||||
int err;
|
||||
|
||||
while (vnic_rq_desc_avail(rq) > 1) {
|
||||
|
||||
err = (*buf_fill)(rq);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_rq_free(struct vnic_rq *rq);
|
||||
int vnic_rq_alloc(struct vnic_dev *vdev, struct vnic_rq *rq, unsigned int index,
|
||||
unsigned int desc_count, unsigned int desc_size);
|
||||
void vnic_rq_init(struct vnic_rq *rq, unsigned int cq_index,
|
||||
unsigned int error_interrupt_enable,
|
||||
unsigned int error_interrupt_offset);
|
||||
unsigned int vnic_rq_error_status(struct vnic_rq *rq);
|
||||
void vnic_rq_enable(struct vnic_rq *rq);
|
||||
int vnic_rq_disable(struct vnic_rq *rq);
|
||||
void vnic_rq_clean(struct vnic_rq *rq,
|
||||
void (*buf_clean)(struct vnic_rq *rq, struct vnic_rq_buf *buf));
|
||||
|
||||
#endif /* _VNIC_RQ_H_ */
|
99
drivers/scsi/fnic/vnic_scsi.h
Normal file
99
drivers/scsi/fnic/vnic_scsi.h
Normal file
|
@ -0,0 +1,99 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_SCSI_H_
|
||||
#define _VNIC_SCSI_H_
|
||||
|
||||
#define VNIC_FNIC_WQ_COPY_COUNT_MIN 1
|
||||
#define VNIC_FNIC_WQ_COPY_COUNT_MAX 1
|
||||
|
||||
#define VNIC_FNIC_WQ_DESCS_MIN 64
|
||||
#define VNIC_FNIC_WQ_DESCS_MAX 128
|
||||
|
||||
#define VNIC_FNIC_WQ_COPY_DESCS_MIN 64
|
||||
#define VNIC_FNIC_WQ_COPY_DESCS_MAX 512
|
||||
|
||||
#define VNIC_FNIC_RQ_DESCS_MIN 64
|
||||
#define VNIC_FNIC_RQ_DESCS_MAX 128
|
||||
|
||||
#define VNIC_FNIC_EDTOV_MIN 1000
|
||||
#define VNIC_FNIC_EDTOV_MAX 255000
|
||||
#define VNIC_FNIC_EDTOV_DEF 2000
|
||||
|
||||
#define VNIC_FNIC_RATOV_MIN 1000
|
||||
#define VNIC_FNIC_RATOV_MAX 255000
|
||||
|
||||
#define VNIC_FNIC_MAXDATAFIELDSIZE_MIN 256
|
||||
#define VNIC_FNIC_MAXDATAFIELDSIZE_MAX 2112
|
||||
|
||||
#define VNIC_FNIC_FLOGI_RETRIES_MIN 0
|
||||
#define VNIC_FNIC_FLOGI_RETRIES_MAX 0xffffffff
|
||||
#define VNIC_FNIC_FLOGI_RETRIES_DEF 0xffffffff
|
||||
|
||||
#define VNIC_FNIC_FLOGI_TIMEOUT_MIN 1000
|
||||
#define VNIC_FNIC_FLOGI_TIMEOUT_MAX 255000
|
||||
|
||||
#define VNIC_FNIC_PLOGI_RETRIES_MIN 0
|
||||
#define VNIC_FNIC_PLOGI_RETRIES_MAX 255
|
||||
#define VNIC_FNIC_PLOGI_RETRIES_DEF 8
|
||||
|
||||
#define VNIC_FNIC_PLOGI_TIMEOUT_MIN 1000
|
||||
#define VNIC_FNIC_PLOGI_TIMEOUT_MAX 255000
|
||||
|
||||
#define VNIC_FNIC_IO_THROTTLE_COUNT_MIN 256
|
||||
#define VNIC_FNIC_IO_THROTTLE_COUNT_MAX 4096
|
||||
|
||||
#define VNIC_FNIC_LINK_DOWN_TIMEOUT_MIN 0
|
||||
#define VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX 240000
|
||||
|
||||
#define VNIC_FNIC_PORT_DOWN_TIMEOUT_MIN 0
|
||||
#define VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX 240000
|
||||
|
||||
#define VNIC_FNIC_PORT_DOWN_IO_RETRIES_MIN 0
|
||||
#define VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX 255
|
||||
|
||||
#define VNIC_FNIC_LUNS_PER_TARGET_MIN 1
|
||||
#define VNIC_FNIC_LUNS_PER_TARGET_MAX 1024
|
||||
|
||||
/* Device-specific region: scsi configuration */
|
||||
struct vnic_fc_config {
|
||||
u64 node_wwn;
|
||||
u64 port_wwn;
|
||||
u32 flags;
|
||||
u32 wq_enet_desc_count;
|
||||
u32 wq_copy_desc_count;
|
||||
u32 rq_desc_count;
|
||||
u32 flogi_retries;
|
||||
u32 flogi_timeout;
|
||||
u32 plogi_retries;
|
||||
u32 plogi_timeout;
|
||||
u32 io_throttle_count;
|
||||
u32 link_down_timeout;
|
||||
u32 port_down_timeout;
|
||||
u32 port_down_io_retries;
|
||||
u32 luns_per_tgt;
|
||||
u16 maxdatafieldsize;
|
||||
u16 ed_tov;
|
||||
u16 ra_tov;
|
||||
u16 intr_timer;
|
||||
u8 intr_timer_type;
|
||||
};
|
||||
|
||||
#define VFCF_FCP_SEQ_LVL_ERR 0x1 /* Enable FCP-2 Error Recovery */
|
||||
#define VFCF_PERBI 0x2 /* persistent binding info available */
|
||||
|
||||
#endif /* _VNIC_SCSI_H_ */
|
68
drivers/scsi/fnic/vnic_stats.h
Normal file
68
drivers/scsi/fnic/vnic_stats.h
Normal file
|
@ -0,0 +1,68 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_STATS_H_
|
||||
#define _VNIC_STATS_H_
|
||||
|
||||
/* Tx statistics */
|
||||
struct vnic_tx_stats {
|
||||
u64 tx_frames_ok;
|
||||
u64 tx_unicast_frames_ok;
|
||||
u64 tx_multicast_frames_ok;
|
||||
u64 tx_broadcast_frames_ok;
|
||||
u64 tx_bytes_ok;
|
||||
u64 tx_unicast_bytes_ok;
|
||||
u64 tx_multicast_bytes_ok;
|
||||
u64 tx_broadcast_bytes_ok;
|
||||
u64 tx_drops;
|
||||
u64 tx_errors;
|
||||
u64 tx_tso;
|
||||
u64 rsvd[16];
|
||||
};
|
||||
|
||||
/* Rx statistics */
|
||||
struct vnic_rx_stats {
|
||||
u64 rx_frames_ok;
|
||||
u64 rx_frames_total;
|
||||
u64 rx_unicast_frames_ok;
|
||||
u64 rx_multicast_frames_ok;
|
||||
u64 rx_broadcast_frames_ok;
|
||||
u64 rx_bytes_ok;
|
||||
u64 rx_unicast_bytes_ok;
|
||||
u64 rx_multicast_bytes_ok;
|
||||
u64 rx_broadcast_bytes_ok;
|
||||
u64 rx_drop;
|
||||
u64 rx_no_bufs;
|
||||
u64 rx_errors;
|
||||
u64 rx_rss;
|
||||
u64 rx_crc_errors;
|
||||
u64 rx_frames_64;
|
||||
u64 rx_frames_127;
|
||||
u64 rx_frames_255;
|
||||
u64 rx_frames_511;
|
||||
u64 rx_frames_1023;
|
||||
u64 rx_frames_1518;
|
||||
u64 rx_frames_to_max;
|
||||
u64 rsvd[16];
|
||||
};
|
||||
|
||||
struct vnic_stats {
|
||||
struct vnic_tx_stats tx;
|
||||
struct vnic_rx_stats rx;
|
||||
};
|
||||
|
||||
#endif /* _VNIC_STATS_H_ */
|
182
drivers/scsi/fnic/vnic_wq.c
Normal file
182
drivers/scsi/fnic/vnic_wq.c
Normal file
|
@ -0,0 +1,182 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/delay.h>
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_wq.h"
|
||||
|
||||
static int vnic_wq_alloc_bufs(struct vnic_wq *wq)
|
||||
{
|
||||
struct vnic_wq_buf *buf;
|
||||
struct vnic_dev *vdev;
|
||||
unsigned int i, j, count = wq->ring.desc_count;
|
||||
unsigned int blks = VNIC_WQ_BUF_BLKS_NEEDED(count);
|
||||
|
||||
vdev = wq->vdev;
|
||||
|
||||
for (i = 0; i < blks; i++) {
|
||||
wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ, GFP_ATOMIC);
|
||||
if (!wq->bufs[i]) {
|
||||
printk(KERN_ERR "Failed to alloc wq_bufs\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < blks; i++) {
|
||||
buf = wq->bufs[i];
|
||||
for (j = 0; j < VNIC_WQ_BUF_BLK_ENTRIES; j++) {
|
||||
buf->index = i * VNIC_WQ_BUF_BLK_ENTRIES + j;
|
||||
buf->desc = (u8 *)wq->ring.descs +
|
||||
wq->ring.desc_size * buf->index;
|
||||
if (buf->index + 1 == count) {
|
||||
buf->next = wq->bufs[0];
|
||||
break;
|
||||
} else if (j + 1 == VNIC_WQ_BUF_BLK_ENTRIES) {
|
||||
buf->next = wq->bufs[i + 1];
|
||||
} else {
|
||||
buf->next = buf + 1;
|
||||
buf++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
wq->to_use = wq->to_clean = wq->bufs[0];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_wq_free(struct vnic_wq *wq)
|
||||
{
|
||||
struct vnic_dev *vdev;
|
||||
unsigned int i;
|
||||
|
||||
vdev = wq->vdev;
|
||||
|
||||
vnic_dev_free_desc_ring(vdev, &wq->ring);
|
||||
|
||||
for (i = 0; i < VNIC_WQ_BUF_BLKS_MAX; i++) {
|
||||
kfree(wq->bufs[i]);
|
||||
wq->bufs[i] = NULL;
|
||||
}
|
||||
|
||||
wq->ctrl = NULL;
|
||||
|
||||
}
|
||||
|
||||
int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,
|
||||
unsigned int desc_count, unsigned int desc_size)
|
||||
{
|
||||
int err;
|
||||
|
||||
wq->index = index;
|
||||
wq->vdev = vdev;
|
||||
|
||||
wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);
|
||||
if (!wq->ctrl) {
|
||||
printk(KERN_ERR "Failed to hook WQ[%d] resource\n", index);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
vnic_wq_disable(wq);
|
||||
|
||||
err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
err = vnic_wq_alloc_bufs(wq);
|
||||
if (err) {
|
||||
vnic_wq_free(wq);
|
||||
return err;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
|
||||
unsigned int error_interrupt_enable,
|
||||
unsigned int error_interrupt_offset)
|
||||
{
|
||||
u64 paddr;
|
||||
|
||||
paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
|
||||
writeq(paddr, &wq->ctrl->ring_base);
|
||||
iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size);
|
||||
iowrite32(0, &wq->ctrl->fetch_index);
|
||||
iowrite32(0, &wq->ctrl->posted_index);
|
||||
iowrite32(cq_index, &wq->ctrl->cq_index);
|
||||
iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
|
||||
iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
|
||||
iowrite32(0, &wq->ctrl->error_status);
|
||||
}
|
||||
|
||||
unsigned int vnic_wq_error_status(struct vnic_wq *wq)
|
||||
{
|
||||
return ioread32(&wq->ctrl->error_status);
|
||||
}
|
||||
|
||||
void vnic_wq_enable(struct vnic_wq *wq)
|
||||
{
|
||||
iowrite32(1, &wq->ctrl->enable);
|
||||
}
|
||||
|
||||
int vnic_wq_disable(struct vnic_wq *wq)
|
||||
{
|
||||
unsigned int wait;
|
||||
|
||||
iowrite32(0, &wq->ctrl->enable);
|
||||
|
||||
/* Wait for HW to ACK disable request */
|
||||
for (wait = 0; wait < 100; wait++) {
|
||||
if (!(ioread32(&wq->ctrl->running)))
|
||||
return 0;
|
||||
udelay(1);
|
||||
}
|
||||
|
||||
printk(KERN_ERR "Failed to disable WQ[%d]\n", wq->index);
|
||||
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
void vnic_wq_clean(struct vnic_wq *wq,
|
||||
void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf))
|
||||
{
|
||||
struct vnic_wq_buf *buf;
|
||||
|
||||
BUG_ON(ioread32(&wq->ctrl->enable));
|
||||
|
||||
buf = wq->to_clean;
|
||||
|
||||
while (vnic_wq_desc_used(wq) > 0) {
|
||||
|
||||
(*buf_clean)(wq, buf);
|
||||
|
||||
buf = wq->to_clean = buf->next;
|
||||
wq->ring.desc_avail++;
|
||||
}
|
||||
|
||||
wq->to_use = wq->to_clean = wq->bufs[0];
|
||||
|
||||
iowrite32(0, &wq->ctrl->fetch_index);
|
||||
iowrite32(0, &wq->ctrl->posted_index);
|
||||
iowrite32(0, &wq->ctrl->error_status);
|
||||
|
||||
vnic_dev_clear_desc_ring(&wq->ring);
|
||||
}
|
175
drivers/scsi/fnic/vnic_wq.h
Normal file
175
drivers/scsi/fnic/vnic_wq.h
Normal file
|
@ -0,0 +1,175 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_WQ_H_
|
||||
#define _VNIC_WQ_H_
|
||||
|
||||
#include <linux/pci.h>
|
||||
#include "vnic_dev.h"
|
||||
#include "vnic_cq.h"
|
||||
|
||||
/*
|
||||
* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
|
||||
* Driver) when both are built with CONFIG options =y
|
||||
*/
|
||||
#define vnic_wq_desc_avail fnic_wq_desc_avail
|
||||
#define vnic_wq_desc_used fnic_wq_desc_used
|
||||
#define vnic_wq_next_desc fni_cwq_next_desc
|
||||
#define vnic_wq_post fnic_wq_post
|
||||
#define vnic_wq_service fnic_wq_service
|
||||
#define vnic_wq_free fnic_wq_free
|
||||
#define vnic_wq_alloc fnic_wq_alloc
|
||||
#define vnic_wq_init fnic_wq_init
|
||||
#define vnic_wq_error_status fnic_wq_error_status
|
||||
#define vnic_wq_enable fnic_wq_enable
|
||||
#define vnic_wq_disable fnic_wq_disable
|
||||
#define vnic_wq_clean fnic_wq_clean
|
||||
|
||||
/* Work queue control */
|
||||
struct vnic_wq_ctrl {
|
||||
u64 ring_base; /* 0x00 */
|
||||
u32 ring_size; /* 0x08 */
|
||||
u32 pad0;
|
||||
u32 posted_index; /* 0x10 */
|
||||
u32 pad1;
|
||||
u32 cq_index; /* 0x18 */
|
||||
u32 pad2;
|
||||
u32 enable; /* 0x20 */
|
||||
u32 pad3;
|
||||
u32 running; /* 0x28 */
|
||||
u32 pad4;
|
||||
u32 fetch_index; /* 0x30 */
|
||||
u32 pad5;
|
||||
u32 dca_value; /* 0x38 */
|
||||
u32 pad6;
|
||||
u32 error_interrupt_enable; /* 0x40 */
|
||||
u32 pad7;
|
||||
u32 error_interrupt_offset; /* 0x48 */
|
||||
u32 pad8;
|
||||
u32 error_status; /* 0x50 */
|
||||
u32 pad9;
|
||||
};
|
||||
|
||||
struct vnic_wq_buf {
|
||||
struct vnic_wq_buf *next;
|
||||
dma_addr_t dma_addr;
|
||||
void *os_buf;
|
||||
unsigned int len;
|
||||
unsigned int index;
|
||||
int sop;
|
||||
void *desc;
|
||||
};
|
||||
|
||||
/* Break the vnic_wq_buf allocations into blocks of 64 entries */
|
||||
#define VNIC_WQ_BUF_BLK_ENTRIES 64
|
||||
#define VNIC_WQ_BUF_BLK_SZ \
|
||||
(VNIC_WQ_BUF_BLK_ENTRIES * sizeof(struct vnic_wq_buf))
|
||||
#define VNIC_WQ_BUF_BLKS_NEEDED(entries) \
|
||||
DIV_ROUND_UP(entries, VNIC_WQ_BUF_BLK_ENTRIES)
|
||||
#define VNIC_WQ_BUF_BLKS_MAX VNIC_WQ_BUF_BLKS_NEEDED(4096)
|
||||
|
||||
struct vnic_wq {
|
||||
unsigned int index;
|
||||
struct vnic_dev *vdev;
|
||||
struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */
|
||||
struct vnic_dev_ring ring;
|
||||
struct vnic_wq_buf *bufs[VNIC_WQ_BUF_BLKS_MAX];
|
||||
struct vnic_wq_buf *to_use;
|
||||
struct vnic_wq_buf *to_clean;
|
||||
unsigned int pkts_outstanding;
|
||||
};
|
||||
|
||||
static inline unsigned int vnic_wq_desc_avail(struct vnic_wq *wq)
|
||||
{
|
||||
/* how many does SW own? */
|
||||
return wq->ring.desc_avail;
|
||||
}
|
||||
|
||||
static inline unsigned int vnic_wq_desc_used(struct vnic_wq *wq)
|
||||
{
|
||||
/* how many does HW own? */
|
||||
return wq->ring.desc_count - wq->ring.desc_avail - 1;
|
||||
}
|
||||
|
||||
static inline void *vnic_wq_next_desc(struct vnic_wq *wq)
|
||||
{
|
||||
return wq->to_use->desc;
|
||||
}
|
||||
|
||||
static inline void vnic_wq_post(struct vnic_wq *wq,
|
||||
void *os_buf, dma_addr_t dma_addr,
|
||||
unsigned int len, int sop, int eop)
|
||||
{
|
||||
struct vnic_wq_buf *buf = wq->to_use;
|
||||
|
||||
buf->sop = sop;
|
||||
buf->os_buf = eop ? os_buf : NULL;
|
||||
buf->dma_addr = dma_addr;
|
||||
buf->len = len;
|
||||
|
||||
buf = buf->next;
|
||||
if (eop) {
|
||||
/* Adding write memory barrier prevents compiler and/or CPU
|
||||
* reordering, thus avoiding descriptor posting before
|
||||
* descriptor is initialized. Otherwise, hardware can read
|
||||
* stale descriptor fields.
|
||||
*/
|
||||
wmb();
|
||||
iowrite32(buf->index, &wq->ctrl->posted_index);
|
||||
}
|
||||
wq->to_use = buf;
|
||||
|
||||
wq->ring.desc_avail--;
|
||||
}
|
||||
|
||||
static inline void vnic_wq_service(struct vnic_wq *wq,
|
||||
struct cq_desc *cq_desc, u16 completed_index,
|
||||
void (*buf_service)(struct vnic_wq *wq,
|
||||
struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque),
|
||||
void *opaque)
|
||||
{
|
||||
struct vnic_wq_buf *buf;
|
||||
|
||||
buf = wq->to_clean;
|
||||
while (1) {
|
||||
|
||||
(*buf_service)(wq, cq_desc, buf, opaque);
|
||||
|
||||
wq->ring.desc_avail++;
|
||||
|
||||
wq->to_clean = buf->next;
|
||||
|
||||
if (buf->index == completed_index)
|
||||
break;
|
||||
|
||||
buf = wq->to_clean;
|
||||
}
|
||||
}
|
||||
|
||||
void vnic_wq_free(struct vnic_wq *wq);
|
||||
int vnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq, unsigned int index,
|
||||
unsigned int desc_count, unsigned int desc_size);
|
||||
void vnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
|
||||
unsigned int error_interrupt_enable,
|
||||
unsigned int error_interrupt_offset);
|
||||
unsigned int vnic_wq_error_status(struct vnic_wq *wq);
|
||||
void vnic_wq_enable(struct vnic_wq *wq);
|
||||
int vnic_wq_disable(struct vnic_wq *wq);
|
||||
void vnic_wq_clean(struct vnic_wq *wq,
|
||||
void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf));
|
||||
|
||||
#endif /* _VNIC_WQ_H_ */
|
117
drivers/scsi/fnic/vnic_wq_copy.c
Normal file
117
drivers/scsi/fnic/vnic_wq_copy.c
Normal file
|
@ -0,0 +1,117 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <linux/errno.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/pci.h>
|
||||
#include <linux/delay.h>
|
||||
#include "vnic_wq_copy.h"
|
||||
|
||||
void vnic_wq_copy_enable(struct vnic_wq_copy *wq)
|
||||
{
|
||||
iowrite32(1, &wq->ctrl->enable);
|
||||
}
|
||||
|
||||
int vnic_wq_copy_disable(struct vnic_wq_copy *wq)
|
||||
{
|
||||
unsigned int wait;
|
||||
|
||||
iowrite32(0, &wq->ctrl->enable);
|
||||
|
||||
/* Wait for HW to ACK disable request */
|
||||
for (wait = 0; wait < 100; wait++) {
|
||||
if (!(ioread32(&wq->ctrl->running)))
|
||||
return 0;
|
||||
udelay(1);
|
||||
}
|
||||
|
||||
printk(KERN_ERR "Failed to disable Copy WQ[%d],"
|
||||
" fetch index=%d, posted_index=%d\n",
|
||||
wq->index, ioread32(&wq->ctrl->fetch_index),
|
||||
ioread32(&wq->ctrl->posted_index));
|
||||
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
void vnic_wq_copy_clean(struct vnic_wq_copy *wq,
|
||||
void (*q_clean)(struct vnic_wq_copy *wq,
|
||||
struct fcpio_host_req *wq_desc))
|
||||
{
|
||||
BUG_ON(ioread32(&wq->ctrl->enable));
|
||||
|
||||
if (vnic_wq_copy_desc_in_use(wq))
|
||||
vnic_wq_copy_service(wq, -1, q_clean);
|
||||
|
||||
wq->to_use_index = wq->to_clean_index = 0;
|
||||
|
||||
iowrite32(0, &wq->ctrl->fetch_index);
|
||||
iowrite32(0, &wq->ctrl->posted_index);
|
||||
iowrite32(0, &wq->ctrl->error_status);
|
||||
|
||||
vnic_dev_clear_desc_ring(&wq->ring);
|
||||
}
|
||||
|
||||
void vnic_wq_copy_free(struct vnic_wq_copy *wq)
|
||||
{
|
||||
struct vnic_dev *vdev;
|
||||
|
||||
vdev = wq->vdev;
|
||||
vnic_dev_free_desc_ring(vdev, &wq->ring);
|
||||
wq->ctrl = NULL;
|
||||
}
|
||||
|
||||
int vnic_wq_copy_alloc(struct vnic_dev *vdev, struct vnic_wq_copy *wq,
|
||||
unsigned int index, unsigned int desc_count,
|
||||
unsigned int desc_size)
|
||||
{
|
||||
int err;
|
||||
|
||||
wq->index = index;
|
||||
wq->vdev = vdev;
|
||||
wq->to_use_index = wq->to_clean_index = 0;
|
||||
wq->ctrl = vnic_dev_get_res(vdev, RES_TYPE_WQ, index);
|
||||
if (!wq->ctrl) {
|
||||
printk(KERN_ERR "Failed to hook COPY WQ[%d] resource\n", index);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
vnic_wq_copy_disable(wq);
|
||||
|
||||
err = vnic_dev_alloc_desc_ring(vdev, &wq->ring, desc_count, desc_size);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vnic_wq_copy_init(struct vnic_wq_copy *wq, unsigned int cq_index,
|
||||
unsigned int error_interrupt_enable,
|
||||
unsigned int error_interrupt_offset)
|
||||
{
|
||||
u64 paddr;
|
||||
|
||||
paddr = (u64)wq->ring.base_addr | VNIC_PADDR_TARGET;
|
||||
writeq(paddr, &wq->ctrl->ring_base);
|
||||
iowrite32(wq->ring.desc_count, &wq->ctrl->ring_size);
|
||||
iowrite32(0, &wq->ctrl->fetch_index);
|
||||
iowrite32(0, &wq->ctrl->posted_index);
|
||||
iowrite32(cq_index, &wq->ctrl->cq_index);
|
||||
iowrite32(error_interrupt_enable, &wq->ctrl->error_interrupt_enable);
|
||||
iowrite32(error_interrupt_offset, &wq->ctrl->error_interrupt_offset);
|
||||
}
|
||||
|
128
drivers/scsi/fnic/vnic_wq_copy.h
Normal file
128
drivers/scsi/fnic/vnic_wq_copy.h
Normal file
|
@ -0,0 +1,128 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _VNIC_WQ_COPY_H_
|
||||
#define _VNIC_WQ_COPY_H_
|
||||
|
||||
#include <linux/pci.h>
|
||||
#include "vnic_wq.h"
|
||||
#include "fcpio.h"
|
||||
|
||||
#define VNIC_WQ_COPY_MAX 1
|
||||
|
||||
struct vnic_wq_copy {
|
||||
unsigned int index;
|
||||
struct vnic_dev *vdev;
|
||||
struct vnic_wq_ctrl __iomem *ctrl; /* memory-mapped */
|
||||
struct vnic_dev_ring ring;
|
||||
unsigned to_use_index;
|
||||
unsigned to_clean_index;
|
||||
};
|
||||
|
||||
static inline unsigned int vnic_wq_copy_desc_avail(struct vnic_wq_copy *wq)
|
||||
{
|
||||
return wq->ring.desc_avail;
|
||||
}
|
||||
|
||||
static inline unsigned int vnic_wq_copy_desc_in_use(struct vnic_wq_copy *wq)
|
||||
{
|
||||
return wq->ring.desc_count - 1 - wq->ring.desc_avail;
|
||||
}
|
||||
|
||||
static inline void *vnic_wq_copy_next_desc(struct vnic_wq_copy *wq)
|
||||
{
|
||||
struct fcpio_host_req *desc = wq->ring.descs;
|
||||
return &desc[wq->to_use_index];
|
||||
}
|
||||
|
||||
static inline void vnic_wq_copy_post(struct vnic_wq_copy *wq)
|
||||
{
|
||||
|
||||
((wq->to_use_index + 1) == wq->ring.desc_count) ?
|
||||
(wq->to_use_index = 0) : (wq->to_use_index++);
|
||||
wq->ring.desc_avail--;
|
||||
|
||||
/* Adding write memory barrier prevents compiler and/or CPU
|
||||
* reordering, thus avoiding descriptor posting before
|
||||
* descriptor is initialized. Otherwise, hardware can read
|
||||
* stale descriptor fields.
|
||||
*/
|
||||
wmb();
|
||||
|
||||
iowrite32(wq->to_use_index, &wq->ctrl->posted_index);
|
||||
}
|
||||
|
||||
static inline void vnic_wq_copy_desc_process(struct vnic_wq_copy *wq, u16 index)
|
||||
{
|
||||
unsigned int cnt;
|
||||
|
||||
if (wq->to_clean_index <= index)
|
||||
cnt = (index - wq->to_clean_index) + 1;
|
||||
else
|
||||
cnt = wq->ring.desc_count - wq->to_clean_index + index + 1;
|
||||
|
||||
wq->to_clean_index = ((index + 1) % wq->ring.desc_count);
|
||||
wq->ring.desc_avail += cnt;
|
||||
|
||||
}
|
||||
|
||||
static inline void vnic_wq_copy_service(struct vnic_wq_copy *wq,
|
||||
u16 completed_index,
|
||||
void (*q_service)(struct vnic_wq_copy *wq,
|
||||
struct fcpio_host_req *wq_desc))
|
||||
{
|
||||
struct fcpio_host_req *wq_desc = wq->ring.descs;
|
||||
unsigned int curr_index;
|
||||
|
||||
while (1) {
|
||||
|
||||
if (q_service)
|
||||
(*q_service)(wq, &wq_desc[wq->to_clean_index]);
|
||||
|
||||
wq->ring.desc_avail++;
|
||||
|
||||
curr_index = wq->to_clean_index;
|
||||
|
||||
/* increment the to-clean index so that we start
|
||||
* with an unprocessed index next time we enter the loop
|
||||
*/
|
||||
((wq->to_clean_index + 1) == wq->ring.desc_count) ?
|
||||
(wq->to_clean_index = 0) : (wq->to_clean_index++);
|
||||
|
||||
if (curr_index == completed_index)
|
||||
break;
|
||||
|
||||
/* we have cleaned all the entries */
|
||||
if ((completed_index == (u16)-1) &&
|
||||
(wq->to_clean_index == wq->to_use_index))
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void vnic_wq_copy_enable(struct vnic_wq_copy *wq);
|
||||
int vnic_wq_copy_disable(struct vnic_wq_copy *wq);
|
||||
void vnic_wq_copy_free(struct vnic_wq_copy *wq);
|
||||
int vnic_wq_copy_alloc(struct vnic_dev *vdev, struct vnic_wq_copy *wq,
|
||||
unsigned int index, unsigned int desc_count, unsigned int desc_size);
|
||||
void vnic_wq_copy_init(struct vnic_wq_copy *wq, unsigned int cq_index,
|
||||
unsigned int error_interrupt_enable,
|
||||
unsigned int error_interrupt_offset);
|
||||
void vnic_wq_copy_clean(struct vnic_wq_copy *wq,
|
||||
void (*q_clean)(struct vnic_wq_copy *wq,
|
||||
struct fcpio_host_req *wq_desc));
|
||||
|
||||
#endif /* _VNIC_WQ_COPY_H_ */
|
96
drivers/scsi/fnic/wq_enet_desc.h
Normal file
96
drivers/scsi/fnic/wq_enet_desc.h
Normal file
|
@ -0,0 +1,96 @@
|
|||
/*
|
||||
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
||||
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
||||
*
|
||||
* This program is free software; you may redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; version 2 of the License.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef _WQ_ENET_DESC_H_
|
||||
#define _WQ_ENET_DESC_H_
|
||||
|
||||
/* Ethernet work queue descriptor: 16B */
|
||||
struct wq_enet_desc {
|
||||
__le64 address;
|
||||
__le16 length;
|
||||
__le16 mss_loopback;
|
||||
__le16 header_length_flags;
|
||||
__le16 vlan_tag;
|
||||
};
|
||||
|
||||
#define WQ_ENET_ADDR_BITS 64
|
||||
#define WQ_ENET_LEN_BITS 14
|
||||
#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1)
|
||||
#define WQ_ENET_MSS_BITS 14
|
||||
#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1)
|
||||
#define WQ_ENET_MSS_SHIFT 2
|
||||
#define WQ_ENET_LOOPBACK_SHIFT 1
|
||||
#define WQ_ENET_HDRLEN_BITS 10
|
||||
#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1)
|
||||
#define WQ_ENET_FLAGS_OM_BITS 2
|
||||
#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)
|
||||
#define WQ_ENET_FLAGS_EOP_SHIFT 12
|
||||
#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13
|
||||
#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14
|
||||
#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15
|
||||
|
||||
#define WQ_ENET_OFFLOAD_MODE_CSUM 0
|
||||
#define WQ_ENET_OFFLOAD_MODE_RESERVED 1
|
||||
#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2
|
||||
#define WQ_ENET_OFFLOAD_MODE_TSO 3
|
||||
|
||||
static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,
|
||||
u64 address, u16 length, u16 mss, u16 header_length,
|
||||
u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap,
|
||||
u8 vlan_tag_insert, u16 vlan_tag, u8 loopback)
|
||||
{
|
||||
desc->address = cpu_to_le64(address);
|
||||
desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);
|
||||
desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<
|
||||
WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);
|
||||
desc->header_length_flags = cpu_to_le16(
|
||||
(header_length & WQ_ENET_HDRLEN_MASK) |
|
||||
(offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |
|
||||
(eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |
|
||||
(cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |
|
||||
(fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |
|
||||
(vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);
|
||||
desc->vlan_tag = cpu_to_le16(vlan_tag);
|
||||
}
|
||||
|
||||
static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,
|
||||
u64 *address, u16 *length, u16 *mss, u16 *header_length,
|
||||
u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap,
|
||||
u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback)
|
||||
{
|
||||
*address = le64_to_cpu(desc->address);
|
||||
*length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;
|
||||
*mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &
|
||||
WQ_ENET_MSS_MASK;
|
||||
*loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>
|
||||
WQ_ENET_LOOPBACK_SHIFT) & 1);
|
||||
*header_length = le16_to_cpu(desc->header_length_flags) &
|
||||
WQ_ENET_HDRLEN_MASK;
|
||||
*offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
||||
WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);
|
||||
*eop = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
||||
WQ_ENET_FLAGS_EOP_SHIFT) & 1);
|
||||
*cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
||||
WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);
|
||||
*fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
||||
WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);
|
||||
*vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
||||
WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);
|
||||
*vlan_tag = le16_to_cpu(desc->vlan_tag);
|
||||
}
|
||||
|
||||
#endif /* _WQ_ENET_DESC_H_ */
|
|
@ -69,7 +69,7 @@
|
|||
#define MPT2SAS_AUTHOR "LSI Corporation <DL-MPTFusionLinux@lsi.com>"
|
||||
#define MPT2SAS_DESCRIPTION "LSI MPT Fusion SAS 2.0 Device Driver"
|
||||
#define MPT2SAS_DRIVER_VERSION "01.100.02.00"
|
||||
#define MPT2SAS_MAJOR_VERSION 00
|
||||
#define MPT2SAS_MAJOR_VERSION 01
|
||||
#define MPT2SAS_MINOR_VERSION 100
|
||||
#define MPT2SAS_BUILD_VERSION 02
|
||||
#define MPT2SAS_RELEASE_VERSION 00
|
||||
|
|
|
@ -425,6 +425,7 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
|
|||
INIT_LIST_HEAD(&starget->devices);
|
||||
starget->state = STARGET_CREATED;
|
||||
starget->scsi_level = SCSI_2;
|
||||
starget->max_target_blocked = SCSI_DEFAULT_TARGET_BLOCKED;
|
||||
retry:
|
||||
spin_lock_irqsave(shost->host_lock, flags);
|
||||
|
||||
|
|
|
@ -357,7 +357,7 @@ int iscsi_session_chkready(struct iscsi_cls_session *session)
|
|||
err = 0;
|
||||
break;
|
||||
case ISCSI_SESSION_FAILED:
|
||||
err = DID_TRANSPORT_DISRUPTED << 16;
|
||||
err = DID_IMM_RETRY << 16;
|
||||
break;
|
||||
case ISCSI_SESSION_FREE:
|
||||
err = DID_TRANSPORT_FAILFAST << 16;
|
||||
|
|
|
@ -680,7 +680,7 @@ fc_remote_port_chkready(struct fc_rport *rport)
|
|||
if (rport->roles & FC_PORT_ROLE_FCP_TARGET)
|
||||
result = 0;
|
||||
else if (rport->flags & FC_RPORT_DEVLOSS_PENDING)
|
||||
result = DID_TRANSPORT_DISRUPTED << 16;
|
||||
result = DID_IMM_RETRY << 16;
|
||||
else
|
||||
result = DID_NO_CONNECT << 16;
|
||||
break;
|
||||
|
@ -688,7 +688,7 @@ fc_remote_port_chkready(struct fc_rport *rport)
|
|||
if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)
|
||||
result = DID_TRANSPORT_FAILFAST << 16;
|
||||
else
|
||||
result = DID_TRANSPORT_DISRUPTED << 16;
|
||||
result = DID_IMM_RETRY << 16;
|
||||
break;
|
||||
default:
|
||||
result = DID_NO_CONNECT << 16;
|
||||
|
|
Loading…
Reference in a new issue