b40acf99be
The current ioport dispatcher is a complex beast, mostly due to the need to deal with old portio interface users. But we can overcome it without converting all portio users by embedding the required base address of a MemoryRegionPortio access into that data structure. That removes the need to have the additional MemoryRegionIORange structure in the loop on every access. To handle old portio memory ops, we simply install dispatching handlers for portio memory regions when registering them with the memory core. This removes the need for the old_portio field. We can drop the additional aliasing of ioport regions and also the special address space listener. cpu_in and cpu_out now simply call address_space_read/write. And we can concentrate portio handling in a single source file. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
73 lines
2.3 KiB
C
73 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 "qemu-common.h"
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#include "exec/iorange.h"
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typedef uint32_t pio_addr_t;
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#define FMT_pioaddr PRIx32
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#define MAX_IOPORTS (64 * 1024)
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#define IOPORTS_MASK (MAX_IOPORTS - 1)
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/* These should really be in isa.h, but are here to make pc.h happy. */
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typedef void (IOPortWriteFunc)(void *opaque, uint32_t address, uint32_t data);
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typedef uint32_t (IOPortReadFunc)(void *opaque, uint32_t address);
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typedef void (IOPortDestructor)(void *opaque);
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void ioport_register(IORange *iorange);
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void isa_unassign_ioport(pio_addr_t start, int length);
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void cpu_outb(pio_addr_t addr, uint8_t val);
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void cpu_outw(pio_addr_t addr, uint16_t val);
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void cpu_outl(pio_addr_t addr, uint32_t val);
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uint8_t cpu_inb(pio_addr_t addr);
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uint16_t cpu_inw(pio_addr_t addr);
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uint32_t cpu_inl(pio_addr_t addr);
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struct MemoryRegion;
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struct MemoryRegionPortio;
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typedef struct PortioList {
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const struct MemoryRegionPortio *ports;
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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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} PortioList;
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void portio_list_init(PortioList *piolist,
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const struct MemoryRegionPortio *callbacks,
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void *opaque, const char *name);
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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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