2007-02-12 16:16:18 -08:00
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/*
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* Copyright (c) 2006 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* 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
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* 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 __CXIO_HAL_H__
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#define __CXIO_HAL_H__
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#include <linux/list.h>
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#include <linux/mutex.h>
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kfifo: move struct kfifo in place
This is a new generic kernel FIFO implementation.
The current kernel fifo API is not very widely used, because it has to
many constrains. Only 17 files in the current 2.6.31-rc5 used it.
FIFO's are like list's a very basic thing and a kfifo API which handles
the most use case would save a lot of development time and memory
resources.
I think this are the reasons why kfifo is not in use:
- The API is to simple, important functions are missing
- A fifo can be only allocated dynamically
- There is a requirement of a spinlock whether you need it or not
- There is no support for data records inside a fifo
So I decided to extend the kfifo in a more generic way without blowing up
the API to much. The new API has the following benefits:
- Generic usage: For kernel internal use and/or device driver.
- Provide an API for the most use case.
- Slim API: The whole API provides 25 functions.
- Linux style habit.
- DECLARE_KFIFO, DEFINE_KFIFO and INIT_KFIFO Macros
- Direct copy_to_user from the fifo and copy_from_user into the fifo.
- The kfifo itself is an in place member of the using data structure, this save an
indirection access and does not waste the kernel allocator.
- Lockless access: if only one reader and one writer is active on the fifo,
which is the common use case, no additional locking is necessary.
- Remove spinlock - give the user the freedom of choice what kind of locking to use if
one is required.
- Ability to handle records. Three type of records are supported:
- Variable length records between 0-255 bytes, with a record size
field of 1 bytes.
- Variable length records between 0-65535 bytes, with a record size
field of 2 bytes.
- Fixed size records, which no record size field.
- Preserve memory resource.
- Performance!
- Easy to use!
This patch:
Since most users want to have the kfifo as part of another object,
reorganize the code to allow including struct kfifo in another data
structure. This requires changing the kfifo_alloc and kfifo_init
prototypes so that we pass an existing kfifo pointer into them. This
patch changes the implementation and all existing users.
[akpm@linux-foundation.org: fix warning]
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-21 14:37:26 -08:00
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#include <linux/kfifo.h>
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2007-02-12 16:16:18 -08:00
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#include "t3_cpl.h"
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#include "t3cdev.h"
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#include "cxgb3_ctl_defs.h"
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#include "cxio_wr.h"
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#define T3_CTRL_QP_ID FW_RI_SGEEC_START
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#define T3_CTL_QP_TID FW_RI_TID_START
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#define T3_CTRL_QP_SIZE_LOG2 8
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#define T3_CTRL_CQ_ID 0
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#define T3_MAX_NUM_RI (1<<15)
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#define T3_MAX_NUM_QP (1<<15)
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#define T3_MAX_NUM_CQ (1<<15)
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#define T3_MAX_NUM_PD (1<<15)
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#define T3_MAX_PBL_SIZE 256
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#define T3_MAX_RQ_SIZE 1024
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2008-07-14 23:48:47 -07:00
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#define T3_MAX_QP_DEPTH (T3_MAX_RQ_SIZE-1)
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2010-01-29 00:55:49 +00:00
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#define T3_MAX_CQ_DEPTH 262144
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2007-02-12 16:16:18 -08:00
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#define T3_MAX_NUM_STAG (1<<15)
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2008-04-29 13:46:52 -07:00
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#define T3_MAX_MR_SIZE 0x100000000ULL
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2008-07-14 23:48:49 -07:00
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#define T3_PAGESIZE_MASK 0xffff000 /* 4KB-128MB */
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2007-02-12 16:16:18 -08:00
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#define T3_STAG_UNSET 0xffffffff
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#define T3_MAX_DEV_NAME_LEN 32
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2009-03-24 20:44:18 -07:00
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#define CXIO_FW_MAJ 7
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2007-02-12 16:16:18 -08:00
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struct cxio_hal_ctrl_qp {
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u32 wptr;
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u32 rptr;
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struct mutex lock; /* for the wtpr, can sleep */
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wait_queue_head_t waitq;/* wait for RspQ/CQE msg */
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union t3_wr *workq; /* the work request queue */
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dma_addr_t dma_addr; /* pci bus address of the workq */
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DECLARE_PCI_UNMAP_ADDR(mapping)
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void __iomem *doorbell;
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};
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struct cxio_hal_resource {
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kfifo: move struct kfifo in place
This is a new generic kernel FIFO implementation.
The current kernel fifo API is not very widely used, because it has to
many constrains. Only 17 files in the current 2.6.31-rc5 used it.
FIFO's are like list's a very basic thing and a kfifo API which handles
the most use case would save a lot of development time and memory
resources.
I think this are the reasons why kfifo is not in use:
- The API is to simple, important functions are missing
- A fifo can be only allocated dynamically
- There is a requirement of a spinlock whether you need it or not
- There is no support for data records inside a fifo
So I decided to extend the kfifo in a more generic way without blowing up
the API to much. The new API has the following benefits:
- Generic usage: For kernel internal use and/or device driver.
- Provide an API for the most use case.
- Slim API: The whole API provides 25 functions.
- Linux style habit.
- DECLARE_KFIFO, DEFINE_KFIFO and INIT_KFIFO Macros
- Direct copy_to_user from the fifo and copy_from_user into the fifo.
- The kfifo itself is an in place member of the using data structure, this save an
indirection access and does not waste the kernel allocator.
- Lockless access: if only one reader and one writer is active on the fifo,
which is the common use case, no additional locking is necessary.
- Remove spinlock - give the user the freedom of choice what kind of locking to use if
one is required.
- Ability to handle records. Three type of records are supported:
- Variable length records between 0-255 bytes, with a record size
field of 1 bytes.
- Variable length records between 0-65535 bytes, with a record size
field of 2 bytes.
- Fixed size records, which no record size field.
- Preserve memory resource.
- Performance!
- Easy to use!
This patch:
Since most users want to have the kfifo as part of another object,
reorganize the code to allow including struct kfifo in another data
structure. This requires changing the kfifo_alloc and kfifo_init
prototypes so that we pass an existing kfifo pointer into them. This
patch changes the implementation and all existing users.
[akpm@linux-foundation.org: fix warning]
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-21 14:37:26 -08:00
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struct kfifo tpt_fifo;
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2007-02-12 16:16:18 -08:00
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spinlock_t tpt_fifo_lock;
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kfifo: move struct kfifo in place
This is a new generic kernel FIFO implementation.
The current kernel fifo API is not very widely used, because it has to
many constrains. Only 17 files in the current 2.6.31-rc5 used it.
FIFO's are like list's a very basic thing and a kfifo API which handles
the most use case would save a lot of development time and memory
resources.
I think this are the reasons why kfifo is not in use:
- The API is to simple, important functions are missing
- A fifo can be only allocated dynamically
- There is a requirement of a spinlock whether you need it or not
- There is no support for data records inside a fifo
So I decided to extend the kfifo in a more generic way without blowing up
the API to much. The new API has the following benefits:
- Generic usage: For kernel internal use and/or device driver.
- Provide an API for the most use case.
- Slim API: The whole API provides 25 functions.
- Linux style habit.
- DECLARE_KFIFO, DEFINE_KFIFO and INIT_KFIFO Macros
- Direct copy_to_user from the fifo and copy_from_user into the fifo.
- The kfifo itself is an in place member of the using data structure, this save an
indirection access and does not waste the kernel allocator.
- Lockless access: if only one reader and one writer is active on the fifo,
which is the common use case, no additional locking is necessary.
- Remove spinlock - give the user the freedom of choice what kind of locking to use if
one is required.
- Ability to handle records. Three type of records are supported:
- Variable length records between 0-255 bytes, with a record size
field of 1 bytes.
- Variable length records between 0-65535 bytes, with a record size
field of 2 bytes.
- Fixed size records, which no record size field.
- Preserve memory resource.
- Performance!
- Easy to use!
This patch:
Since most users want to have the kfifo as part of another object,
reorganize the code to allow including struct kfifo in another data
structure. This requires changing the kfifo_alloc and kfifo_init
prototypes so that we pass an existing kfifo pointer into them. This
patch changes the implementation and all existing users.
[akpm@linux-foundation.org: fix warning]
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-21 14:37:26 -08:00
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struct kfifo qpid_fifo;
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2007-02-12 16:16:18 -08:00
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spinlock_t qpid_fifo_lock;
|
kfifo: move struct kfifo in place
This is a new generic kernel FIFO implementation.
The current kernel fifo API is not very widely used, because it has to
many constrains. Only 17 files in the current 2.6.31-rc5 used it.
FIFO's are like list's a very basic thing and a kfifo API which handles
the most use case would save a lot of development time and memory
resources.
I think this are the reasons why kfifo is not in use:
- The API is to simple, important functions are missing
- A fifo can be only allocated dynamically
- There is a requirement of a spinlock whether you need it or not
- There is no support for data records inside a fifo
So I decided to extend the kfifo in a more generic way without blowing up
the API to much. The new API has the following benefits:
- Generic usage: For kernel internal use and/or device driver.
- Provide an API for the most use case.
- Slim API: The whole API provides 25 functions.
- Linux style habit.
- DECLARE_KFIFO, DEFINE_KFIFO and INIT_KFIFO Macros
- Direct copy_to_user from the fifo and copy_from_user into the fifo.
- The kfifo itself is an in place member of the using data structure, this save an
indirection access and does not waste the kernel allocator.
- Lockless access: if only one reader and one writer is active on the fifo,
which is the common use case, no additional locking is necessary.
- Remove spinlock - give the user the freedom of choice what kind of locking to use if
one is required.
- Ability to handle records. Three type of records are supported:
- Variable length records between 0-255 bytes, with a record size
field of 1 bytes.
- Variable length records between 0-65535 bytes, with a record size
field of 2 bytes.
- Fixed size records, which no record size field.
- Preserve memory resource.
- Performance!
- Easy to use!
This patch:
Since most users want to have the kfifo as part of another object,
reorganize the code to allow including struct kfifo in another data
structure. This requires changing the kfifo_alloc and kfifo_init
prototypes so that we pass an existing kfifo pointer into them. This
patch changes the implementation and all existing users.
[akpm@linux-foundation.org: fix warning]
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-21 14:37:26 -08:00
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struct kfifo cqid_fifo;
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2007-02-12 16:16:18 -08:00
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spinlock_t cqid_fifo_lock;
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kfifo: move struct kfifo in place
This is a new generic kernel FIFO implementation.
The current kernel fifo API is not very widely used, because it has to
many constrains. Only 17 files in the current 2.6.31-rc5 used it.
FIFO's are like list's a very basic thing and a kfifo API which handles
the most use case would save a lot of development time and memory
resources.
I think this are the reasons why kfifo is not in use:
- The API is to simple, important functions are missing
- A fifo can be only allocated dynamically
- There is a requirement of a spinlock whether you need it or not
- There is no support for data records inside a fifo
So I decided to extend the kfifo in a more generic way without blowing up
the API to much. The new API has the following benefits:
- Generic usage: For kernel internal use and/or device driver.
- Provide an API for the most use case.
- Slim API: The whole API provides 25 functions.
- Linux style habit.
- DECLARE_KFIFO, DEFINE_KFIFO and INIT_KFIFO Macros
- Direct copy_to_user from the fifo and copy_from_user into the fifo.
- The kfifo itself is an in place member of the using data structure, this save an
indirection access and does not waste the kernel allocator.
- Lockless access: if only one reader and one writer is active on the fifo,
which is the common use case, no additional locking is necessary.
- Remove spinlock - give the user the freedom of choice what kind of locking to use if
one is required.
- Ability to handle records. Three type of records are supported:
- Variable length records between 0-255 bytes, with a record size
field of 1 bytes.
- Variable length records between 0-65535 bytes, with a record size
field of 2 bytes.
- Fixed size records, which no record size field.
- Preserve memory resource.
- Performance!
- Easy to use!
This patch:
Since most users want to have the kfifo as part of another object,
reorganize the code to allow including struct kfifo in another data
structure. This requires changing the kfifo_alloc and kfifo_init
prototypes so that we pass an existing kfifo pointer into them. This
patch changes the implementation and all existing users.
[akpm@linux-foundation.org: fix warning]
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-21 14:37:26 -08:00
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struct kfifo pdid_fifo;
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2007-02-12 16:16:18 -08:00
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spinlock_t pdid_fifo_lock;
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};
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struct cxio_qpid_list {
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struct list_head entry;
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u32 qpid;
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};
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struct cxio_ucontext {
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struct list_head qpids;
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struct mutex lock;
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};
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struct cxio_rdev {
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char dev_name[T3_MAX_DEV_NAME_LEN];
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struct t3cdev *t3cdev_p;
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struct rdma_info rnic_info;
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struct adap_ports port_info;
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struct cxio_hal_resource *rscp;
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struct cxio_hal_ctrl_qp ctrl_qp;
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void *ulp;
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unsigned long qpshift;
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u32 qpnr;
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u32 qpmask;
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struct cxio_ucontext uctx;
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struct gen_pool *pbl_pool;
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struct gen_pool *rqt_pool;
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struct list_head entry;
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2009-03-24 20:44:18 -07:00
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struct ch_embedded_info fw_info;
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2009-01-26 22:22:19 -08:00
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u32 flags;
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#define CXIO_ERROR_FATAL 1
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2007-02-12 16:16:18 -08:00
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};
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2009-03-30 08:37:56 -07:00
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static inline int cxio_fatal_error(struct cxio_rdev *rdev_p)
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{
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return rdev_p->flags & CXIO_ERROR_FATAL;
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}
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2007-02-12 16:16:18 -08:00
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static inline int cxio_num_stags(struct cxio_rdev *rdev_p)
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{
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return min((int)T3_MAX_NUM_STAG, (int)((rdev_p->rnic_info.tpt_top - rdev_p->rnic_info.tpt_base) >> 5));
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}
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typedef void (*cxio_hal_ev_callback_func_t) (struct cxio_rdev * rdev_p,
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struct sk_buff * skb);
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#define RSPQ_CQID(rsp) (be32_to_cpu(rsp->cq_ptrid) & 0xffff)
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#define RSPQ_CQPTR(rsp) ((be32_to_cpu(rsp->cq_ptrid) >> 16) & 0xffff)
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#define RSPQ_GENBIT(rsp) ((be32_to_cpu(rsp->flags) >> 16) & 1)
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#define RSPQ_OVERFLOW(rsp) ((be32_to_cpu(rsp->flags) >> 17) & 1)
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#define RSPQ_AN(rsp) ((be32_to_cpu(rsp->flags) >> 18) & 1)
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#define RSPQ_SE(rsp) ((be32_to_cpu(rsp->flags) >> 19) & 1)
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#define RSPQ_NOTIFY(rsp) ((be32_to_cpu(rsp->flags) >> 20) & 1)
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#define RSPQ_CQBRANCH(rsp) ((be32_to_cpu(rsp->flags) >> 21) & 1)
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#define RSPQ_CREDIT_THRESH(rsp) ((be32_to_cpu(rsp->flags) >> 22) & 1)
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struct respQ_msg_t {
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__be32 flags; /* flit 0 */
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__be32 cq_ptrid;
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__be64 rsvd; /* flit 1 */
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struct t3_cqe cqe; /* flits 2-3 */
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};
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enum t3_cq_opcode {
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CQ_ARM_AN = 0x2,
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CQ_ARM_SE = 0x6,
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CQ_FORCE_AN = 0x3,
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CQ_CREDIT_UPDATE = 0x7
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};
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int cxio_rdev_open(struct cxio_rdev *rdev);
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void cxio_rdev_close(struct cxio_rdev *rdev);
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int cxio_hal_cq_op(struct cxio_rdev *rdev, struct t3_cq *cq,
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enum t3_cq_opcode op, u32 credit);
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2010-01-27 20:22:34 +00:00
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int cxio_create_cq(struct cxio_rdev *rdev, struct t3_cq *cq, int kernel);
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2007-02-12 16:16:18 -08:00
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int cxio_destroy_cq(struct cxio_rdev *rdev, struct t3_cq *cq);
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int cxio_resize_cq(struct cxio_rdev *rdev, struct t3_cq *cq);
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void cxio_release_ucontext(struct cxio_rdev *rdev, struct cxio_ucontext *uctx);
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void cxio_init_ucontext(struct cxio_rdev *rdev, struct cxio_ucontext *uctx);
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int cxio_create_qp(struct cxio_rdev *rdev, u32 kernel_domain, struct t3_wq *wq,
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struct cxio_ucontext *uctx);
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int cxio_destroy_qp(struct cxio_rdev *rdev, struct t3_wq *wq,
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struct cxio_ucontext *uctx);
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int cxio_peek_cq(struct t3_wq *wr, struct t3_cq *cq, int opcode);
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2008-05-06 15:56:22 -07:00
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int cxio_write_pbl(struct cxio_rdev *rdev_p, __be64 *pbl,
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u32 pbl_addr, u32 pbl_size);
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2007-02-12 16:16:18 -08:00
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int cxio_register_phys_mem(struct cxio_rdev *rdev, u32 * stag, u32 pdid,
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enum tpt_mem_perm perm, u32 zbva, u64 to, u32 len,
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2008-05-06 15:56:22 -07:00
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u8 page_size, u32 pbl_size, u32 pbl_addr);
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2007-02-12 16:16:18 -08:00
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int cxio_reregister_phys_mem(struct cxio_rdev *rdev, u32 * stag, u32 pdid,
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enum tpt_mem_perm perm, u32 zbva, u64 to, u32 len,
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2008-05-06 15:56:22 -07:00
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u8 page_size, u32 pbl_size, u32 pbl_addr);
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2007-02-12 16:16:18 -08:00
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int cxio_dereg_mem(struct cxio_rdev *rdev, u32 stag, u32 pbl_size,
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u32 pbl_addr);
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int cxio_allocate_window(struct cxio_rdev *rdev, u32 * stag, u32 pdid);
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2008-07-14 23:48:45 -07:00
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int cxio_allocate_stag(struct cxio_rdev *rdev, u32 *stag, u32 pdid, u32 pbl_size, u32 pbl_addr);
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2007-02-12 16:16:18 -08:00
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int cxio_deallocate_window(struct cxio_rdev *rdev, u32 stag);
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int cxio_rdma_init(struct cxio_rdev *rdev, struct t3_rdma_init_attr *attr);
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void cxio_register_ev_cb(cxio_hal_ev_callback_func_t ev_cb);
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void cxio_unregister_ev_cb(cxio_hal_ev_callback_func_t ev_cb);
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u32 cxio_hal_get_pdid(struct cxio_hal_resource *rscp);
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void cxio_hal_put_pdid(struct cxio_hal_resource *rscp, u32 pdid);
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int __init cxio_hal_init(void);
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void __exit cxio_hal_exit(void);
|
2008-05-02 11:17:41 -05:00
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int cxio_flush_rq(struct t3_wq *wq, struct t3_cq *cq, int count);
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int cxio_flush_sq(struct t3_wq *wq, struct t3_cq *cq, int count);
|
2007-02-12 16:16:18 -08:00
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void cxio_count_rcqes(struct t3_cq *cq, struct t3_wq *wq, int *count);
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void cxio_count_scqes(struct t3_cq *cq, struct t3_wq *wq, int *count);
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void cxio_flush_hw_cq(struct t3_cq *cq);
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int cxio_poll_cq(struct t3_wq *wq, struct t3_cq *cq, struct t3_cqe *cqe,
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|
|
u8 *cqe_flushed, u64 *cookie, u32 *credit);
|
2009-03-30 08:37:56 -07:00
|
|
|
int iwch_cxgb3_ofld_send(struct t3cdev *tdev, struct sk_buff *skb);
|
2007-02-12 16:16:18 -08:00
|
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|
#define MOD "iw_cxgb3: "
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|
|
#define PDBG(fmt, args...) pr_debug(MOD fmt, ## args)
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|
#ifdef DEBUG
|
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|
|
void cxio_dump_tpt(struct cxio_rdev *rev, u32 stag);
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|
void cxio_dump_pbl(struct cxio_rdev *rev, u32 pbl_addr, uint len, u8 shift);
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|
void cxio_dump_wqe(union t3_wr *wqe);
|
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|
void cxio_dump_wce(struct t3_cqe *wce);
|
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|
|
void cxio_dump_rqt(struct cxio_rdev *rdev, u32 hwtid, int nents);
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|
void cxio_dump_tcb(struct cxio_rdev *rdev, u32 hwtid);
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|
#endif
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|
#endif
|