9e57b81861
Unlike pam_update() which takes the subject -- PAMMemoryRegion -- as first argument, init_pam() takes it as fifth (!) argument. This makes it quite hard to figure out what an init_pam() invocation actually initializes. By moving the subject to the front this should become clearer. While at it, lower the DeviceState parameter to Object, also communicating more clearly that this parameter is just the owner rather than some (heavy?) dependency. Signed-off-by: Bernhard Beschow <shentey@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230213162004.2797-8-shentey@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
#ifndef QEMU_PAM_H
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#define QEMU_PAM_H
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/*
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* Copyright (c) 2006 Fabrice Bellard
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* Copyright (c) 2011 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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* Copyright (c) 2012 Jason Baron <jbaron@redhat.com>
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*
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* Split out from piix.c
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/*
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* SMRAM memory area and PAM memory area in Legacy address range for PC.
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* PAM: Programmable Attribute Map registers
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*
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* 0xa0000 - 0xbffff compatible SMRAM
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*
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* 0xc0000 - 0xc3fff Expansion area memory segments
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* 0xc4000 - 0xc7fff
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* 0xc8000 - 0xcbfff
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* 0xcc000 - 0xcffff
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* 0xd0000 - 0xd3fff
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* 0xd4000 - 0xd7fff
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* 0xd8000 - 0xdbfff
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* 0xdc000 - 0xdffff
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* 0xe0000 - 0xe3fff Extended System BIOS Area Memory Segments
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* 0xe4000 - 0xe7fff
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* 0xe8000 - 0xebfff
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* 0xec000 - 0xeffff
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*
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* 0xf0000 - 0xfffff System BIOS Area Memory Segments
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*/
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#include "exec/memory.h"
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#define SMRAM_C_BASE 0xa0000
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#define SMRAM_C_END 0xc0000
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#define SMRAM_C_SIZE 0x20000
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#define PAM_EXPAN_BASE 0xc0000
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#define PAM_EXPAN_SIZE 0x04000
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#define PAM_EXBIOS_BASE 0xe0000
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#define PAM_EXBIOS_SIZE 0x04000
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#define PAM_BIOS_BASE 0xf0000
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#define PAM_BIOS_END 0xfffff
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/* 64KB: Intel 3 series express chipset family p. 58*/
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#define PAM_BIOS_SIZE 0x10000
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/* PAM registers: log nibble and high nibble*/
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#define PAM_ATTR_WE ((uint8_t)2)
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#define PAM_ATTR_RE ((uint8_t)1)
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#define PAM_ATTR_MASK ((uint8_t)3)
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/* SMRAM register */
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#define SMRAM_D_OPEN ((uint8_t)(1 << 6))
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#define SMRAM_D_CLS ((uint8_t)(1 << 5))
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#define SMRAM_D_LCK ((uint8_t)(1 << 4))
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#define SMRAM_G_SMRAME ((uint8_t)(1 << 3))
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#define SMRAM_C_BASE_SEG_MASK ((uint8_t)0x7)
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#define SMRAM_C_BASE_SEG ((uint8_t)0x2) /* hardwired to b010 */
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#define PAM_REGIONS_COUNT 13
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typedef struct PAMMemoryRegion {
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MemoryRegion alias[4]; /* index = PAM value */
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unsigned current;
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} PAMMemoryRegion;
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void init_pam(PAMMemoryRegion *mem, Object *owner, MemoryRegion *ram,
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MemoryRegion *system, MemoryRegion *pci,
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uint32_t start, uint32_t size);
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void pam_update(PAMMemoryRegion *mem, int idx, uint8_t val);
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#endif /* QEMU_PAM_H */
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