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b61af9b0d1
This removes a hidden use of qemu_host_page_size, hoisting two uses of qemu_real_host_page_size to a local variable. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Acked-by: Helge Deller <deller@gmx.de>
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
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* tpm_ppi.c - TPM Physical Presence Interface
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*
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* Copyright (C) 2018 IBM Corporation
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*
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* Authors:
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* Stefan Berger <stefanb@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "qemu/memalign.h"
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#include "qapi/error.h"
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#include "sysemu/memory_mapping.h"
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#include "migration/vmstate.h"
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#include "hw/qdev-core.h"
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#include "hw/acpi/tpm.h"
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#include "tpm_ppi.h"
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#include "trace.h"
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void tpm_ppi_reset(TPMPPI *tpmppi)
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{
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if (tpmppi->buf[0x15a /* movv, docs/specs/tpm.rst */] & 0x1) {
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GuestPhysBlockList guest_phys_blocks;
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GuestPhysBlock *block;
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guest_phys_blocks_init(&guest_phys_blocks);
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guest_phys_blocks_append(&guest_phys_blocks);
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QTAILQ_FOREACH(block, &guest_phys_blocks.head, next) {
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hwaddr mr_offs = block->host_addr -
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(uint8_t *)memory_region_get_ram_ptr(block->mr);
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trace_tpm_ppi_memset(block->host_addr,
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block->target_end - block->target_start);
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memset(block->host_addr, 0,
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block->target_end - block->target_start);
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memory_region_set_dirty(block->mr, mr_offs,
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block->target_end - block->target_start);
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}
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guest_phys_blocks_free(&guest_phys_blocks);
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}
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}
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void tpm_ppi_init(TPMPPI *tpmppi, MemoryRegion *m,
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hwaddr addr, Object *obj)
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{
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size_t host_page_size = qemu_real_host_page_size();
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tpmppi->buf = qemu_memalign(host_page_size,
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ROUND_UP(TPM_PPI_ADDR_SIZE, host_page_size));
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memory_region_init_ram_device_ptr(&tpmppi->ram, obj, "tpm-ppi",
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TPM_PPI_ADDR_SIZE, tpmppi->buf);
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vmstate_register_ram(&tpmppi->ram, DEVICE(obj));
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memory_region_add_subregion(m, addr, &tpmppi->ram);
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}
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