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ec150c7e09
Back in 2016, we discussed[1] rules for headers, and these were
generally liked:
1. Have a carefully curated header that's included everywhere first. We
got that already thanks to Peter: osdep.h.
2. Headers should normally include everything they need beyond osdep.h.
If exceptions are needed for some reason, they must be documented in
the header. If all that's needed from a header is typedefs, put
those into qemu/typedefs.h instead of including the header.
3. Cyclic inclusion is forbidden.
This patch gets include/ closer to obeying 2.
It's actually extracted from my "[RFC] Baby steps towards saner
headers" series[2], which demonstrates a possible path towards
checking 2 automatically. It passes the RFC test there.
[1] Message-ID: <87h9g8j57d.fsf@blackfin.pond.sub.org>
https://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg03345.html
[2] Message-Id: <20190711122827.18970-1-armbru@redhat.com>
https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg02715.html
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-2-armbru@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/*
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* defines ioport related functions
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/**************************************************************************
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* IO ports API
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*/
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#ifndef IOPORT_H
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#define IOPORT_H
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#include "exec/memory.h"
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#define MAX_IOPORTS (64 * 1024)
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#define IOPORTS_MASK (MAX_IOPORTS - 1)
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typedef struct MemoryRegionPortio {
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uint32_t offset;
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uint32_t len;
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unsigned size;
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uint32_t (*read)(void *opaque, uint32_t address);
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void (*write)(void *opaque, uint32_t address, uint32_t data);
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uint32_t base; /* private field */
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} MemoryRegionPortio;
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#define PORTIO_END_OF_LIST() { }
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#ifndef CONFIG_USER_ONLY
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extern const MemoryRegionOps unassigned_io_ops;
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#endif
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void cpu_outb(uint32_t addr, uint8_t val);
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void cpu_outw(uint32_t addr, uint16_t val);
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void cpu_outl(uint32_t addr, uint32_t val);
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uint8_t cpu_inb(uint32_t addr);
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uint16_t cpu_inw(uint32_t addr);
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uint32_t cpu_inl(uint32_t addr);
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typedef struct PortioList {
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const struct MemoryRegionPortio *ports;
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Object *owner;
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struct MemoryRegion *address_space;
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unsigned nr;
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struct MemoryRegion **regions;
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void *opaque;
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const char *name;
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bool flush_coalesced_mmio;
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} PortioList;
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void portio_list_init(PortioList *piolist, Object *owner,
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const struct MemoryRegionPortio *callbacks,
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void *opaque, const char *name);
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void portio_list_set_flush_coalesced(PortioList *piolist);
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void portio_list_destroy(PortioList *piolist);
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void portio_list_add(PortioList *piolist,
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struct MemoryRegion *address_space,
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uint32_t addr);
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void portio_list_del(PortioList *piolist);
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#endif /* IOPORT_H */
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