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Nick Price
82281715ef
puc has preferred MSI for every card since MSI support was added, with only a global tunable to opt out. uart(4) makes the same decision for the serial devices it attaches directly, and has since grown two defences: it skips MSI unless the device advertises exactly one vector, because attaching a single instance to a device offering many has caused problems (PR 235016), and it lets individual devices be flagged when they claim MSI support that does not work. Adopt both. Approved by: adrian (mentor) Reviewed by: adrian Differential Revision: https://reviews.freebsd.org/D59623 Signed-off-by: Nick Price <[email protected]>
93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2006 Marcel Moolenaar
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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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*
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _DEV_PUC_CFG_H_
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#define _DEV_PUC_CFG_H_
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#define DEFAULT_RCLK 1843200
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#define PUC_PORT_NONSTANDARD 0
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#define PUC_PORT_1P 1 /* 1 parallel port */
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#define PUC_PORT_1S 2 /* 1 serial port */
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#define PUC_PORT_1S1P 3 /* 1 serial + 1 parallel ports */
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#define PUC_PORT_1S2P 4 /* 1 serial + 2 parallel ports */
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#define PUC_PORT_2P 5 /* 2 parallel ports */
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#define PUC_PORT_2S 6 /* 2 serial ports */
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#define PUC_PORT_2S1P 7 /* 2 serial + 1 parallel ports */
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#define PUC_PORT_3S 8 /* 3 serial ports */
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#define PUC_PORT_4S 9 /* 4 serial ports */
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#define PUC_PORT_4S1P 10 /* 4 serial + 1 parallel ports */
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#define PUC_PORT_6S 11 /* 6 serial ports */
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#define PUC_PORT_8S 12 /* 8 serial ports */
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#define PUC_PORT_12S 13 /* 12 serial ports */
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#define PUC_PORT_16S 14 /* 16 serial ports */
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/* Interrupt Latch Register (ILR) types */
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#define PUC_ILR_NONE 0
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#define PUC_ILR_DIGI 1
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#define PUC_ILR_QUATECH 2
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/* Configuration flags. */
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#define PUC_FLAGS_NO_MSI 0x01
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/* Configuration queries. */
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enum puc_cfg_cmd {
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PUC_CFG_GET_CLOCK,
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PUC_CFG_GET_DESC,
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PUC_CFG_GET_ILR,
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PUC_CFG_GET_LEN,
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PUC_CFG_GET_NPORTS,
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PUC_CFG_GET_OFS,
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PUC_CFG_GET_RID,
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PUC_CFG_GET_TYPE,
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PUC_CFG_SETUP
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};
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struct puc_softc;
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typedef int puc_config_f(struct puc_softc *, enum puc_cfg_cmd, int, intptr_t *);
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struct puc_cfg {
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uint16_t vendor;
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uint16_t device;
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uint16_t subvendor;
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uint16_t subdevice;
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const char *desc;
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int clock;
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int8_t ports;
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int8_t rid; /* Rid of first port */
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int8_t d_rid; /* Delta rid of next ports */
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int8_t d_ofs; /* Delta offset of next ports */
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uint8_t flags; /* PUC_FLAGS_* */
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puc_config_f *config_function;
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};
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puc_config_f puc_config;
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#endif /* _DEV_PUC_CFG_H_ */
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