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| author | Alex Bennée <alex.bennee@linaro.org> | 2021-02-13 13:03:04 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2021-02-18 08:16:50 +0000 |
| commit | b853a79f6530fbccdb65639b6e5a94f71dcd5050 (patch) | |
| tree | 4546991230a8f4a6c1e09823cba92f74e8ca6467 | |
| parent | b74259e3de6c496a3fe27076e85ec63bd656b208 (diff) | |
| download | qemu-b853a79f6530fbccdb65639b6e5a94f71dcd5050.zip qemu-b853a79f6530fbccdb65639b6e5a94f71dcd5050.tar.gz qemu-b853a79f6530fbccdb65639b6e5a94f71dcd5050.tar.bz2 | |
plugins: add API to return a name for a IO device
This may well end up being anonymous but it should always be unique.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Clement Deschamps <clement.deschamps@greensocs.com>
Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210213130325.14781-3-alex.bennee@linaro.org>
| -rw-r--r-- | include/qemu/qemu-plugin.h | 6 | ||||
| -rw-r--r-- | plugins/api.c | 20 |
2 files changed, 26 insertions, 0 deletions
diff --git a/include/qemu/qemu-plugin.h b/include/qemu/qemu-plugin.h index 5775e82..c66507f 100644 --- a/include/qemu/qemu-plugin.h +++ b/include/qemu/qemu-plugin.h @@ -330,6 +330,12 @@ struct qemu_plugin_hwaddr *qemu_plugin_get_hwaddr(qemu_plugin_meminfo_t info, bool qemu_plugin_hwaddr_is_io(const struct qemu_plugin_hwaddr *haddr); uint64_t qemu_plugin_hwaddr_device_offset(const struct qemu_plugin_hwaddr *haddr); +/* + * Returns a string representing the device. The string is valid for + * the lifetime of the plugin. + */ +const char *qemu_plugin_hwaddr_device_name(const struct qemu_plugin_hwaddr *h); + typedef void (*qemu_plugin_vcpu_mem_cb_t)(unsigned int vcpu_index, qemu_plugin_meminfo_t info, uint64_t vaddr, diff --git a/plugins/api.c b/plugins/api.c index bbdc5a4..5dc8e6f 100644 --- a/plugins/api.c +++ b/plugins/api.c @@ -303,6 +303,26 @@ uint64_t qemu_plugin_hwaddr_device_offset(const struct qemu_plugin_hwaddr *haddr return 0; } +const char *qemu_plugin_hwaddr_device_name(const struct qemu_plugin_hwaddr *h) +{ +#ifdef CONFIG_SOFTMMU + if (h && h->is_io) { + MemoryRegionSection *mrs = h->v.io.section; + if (!mrs->mr->name) { + unsigned long maddr = 0xffffffff & (uintptr_t) mrs->mr; + g_autofree char *temp = g_strdup_printf("anon%08lx", maddr); + return g_intern_string(temp); + } else { + return g_intern_string(mrs->mr->name); + } + } else { + return g_intern_static_string("RAM"); + } +#else + return g_intern_static_string("Invalid"); +#endif +} + /* * Queries to the number and potential maximum number of vCPUs there * will be. This helps the plugin dimension per-vcpu arrays. |