e6c12d85d0
- Layout reorganisation to enhance portability. The driver now has a relatively MI 'core' and a FreeBSD-specific layer over the top. Since the NetBSD people have already done their own port, this is largely just to help me with the BSD/OS port. - Request ID allocation changed to improve performance (I'd been considering switching to this approach after having failed to come up with a better way to dynamically allocate request IDs, and seeing Andy Doran use it in the NetBSD port of the driver convinced me that I was wasting my time doing it any other way). Now we just allocate all the requests up front. - Maximum request count bumped back to 255 after characterisation of a firmware issue (off-by-one causing it to crash with 256 outstanding commands). - Control interface implemented. This allows 3ware's '3dm' utility to talk to the controller. 3dm will be available from 3ware shortly. - Controller soft-reset feature added; if the controller signals a firmware or protocol error, the controller will be reset and all outstanding commands will be retried.
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/*-
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* User-space command
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*
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* Note that the command's scatter/gather list will be computed by the
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* driver, and cannot be filled in by the consumer.
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*/
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struct twe_usercommand {
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TWE_Command tu_command; /* command ready for the controller */
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void *tu_data; /* pointer to data in userspace */
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size_t tu_size; /* userspace data length */
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};
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#define TWEIO_COMMAND _IOWR('T', 100, struct twe_usercommand)
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/*
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* Command queue statistics
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*/
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#define TWEQ_FREE 0
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#define TWEQ_BIO 1
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#define TWEQ_READY 2
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#define TWEQ_BUSY 3
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#define TWEQ_COMPLETE 4
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#define TWEQ_COUNT 5 /* total number of queues */
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struct twe_qstat {
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u_int32_t q_length;
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u_int32_t q_max;
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};
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/*
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* Statistics request
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*/
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union twe_statrequest {
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u_int32_t ts_item;
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struct twe_qstat ts_qstat;
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};
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#define TWEIO_STATS _IOWR('T', 101, union twe_statrequest)
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/*
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* AEN listen
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*/
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#define TWEIO_AEN_POLL _IOR('T', 102, int)
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#define TWEIO_AEN_WAIT _IOR('T', 103, int)
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/*
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* Controller parameter access
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*/
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struct twe_paramcommand {
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u_int16_t tp_table_id;
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u_int8_t tp_param_id;
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void *tp_data;
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u_int8_t tp_size;
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};
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#define TWEIO_SET_PARAM _IOW ('T', 104, struct twe_paramcommand)
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#define TWEIO_GET_PARAM _IOW ('T', 105, struct twe_paramcommand)
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/*
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* Request a controller soft-reset
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*/
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#define TWEIO_RESET _IO ('T', 106)
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