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plugins: Expose physical addresses instead of device offsets

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This allows plugins to query for full virtual-to-physical address
translation for a given `qemu_plugin_hwaddr` and stops exposing the
offset within the device itself. As this change breaks the API,
QEMU_PLUGIN_VERSION is incremented.

Signed-off-by: Aaron Lindsay <aaron@os.amperecomputing.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210309202802.211756-1-aaron@os.amperecomputing.com>
Message-Id: <20210312172821.31647-3-alex.bennee@linaro.org>
This commit is contained in:
Aaron Lindsay 2021-03-12 17:28:09 +00:00 • committed by Alex Bennée
parent 279d0a5b1e
commit 787148bf92
4 changed files with 39 additions and 14 deletions
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17
plugins/api.c
View file

@ -40,6 +40,7 @@
#include "sysemu/sysemu.h"
#include "tcg/tcg.h"
#include "exec/exec-all.h"
#include "exec/ram_addr.h"
#include "disas/disas.h"
#include "plugin.h"
#ifndef CONFIG_USER_ONLY
@ -298,19 +299,25 @@ bool qemu_plugin_hwaddr_is_io(const struct qemu_plugin_hwaddr *haddr)
#endif
}
uint64_t qemu_plugin_hwaddr_device_offset(const struct qemu_plugin_hwaddr *haddr)
uint64_t qemu_plugin_hwaddr_phys_addr(const struct qemu_plugin_hwaddr *haddr)
{
#ifdef CONFIG_SOFTMMU
if (haddr) {
if (!haddr->is_io) {
ram_addr_t ram_addr = qemu_ram_addr_from_host((void *) haddr->v.ram.hostaddr);
if (ram_addr == RAM_ADDR_INVALID) {
RAMBlock *block;
ram_addr_t offset;
void *hostaddr = (void *) haddr->v.ram.hostaddr;
block = qemu_ram_block_from_host(hostaddr, false, &offset);
if (!block) {
error_report("Bad ram pointer %"PRIx64"", haddr->v.ram.hostaddr);
abort();
}
return ram_addr;
return block->offset + offset + block->mr->addr;
} else {
return haddr->v.io.offset;
MemoryRegionSection *mrs = haddr->v.io.section;
return haddr->v.io.offset + mrs->mr->addr;
}
}
#endif