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nvdimm acpi: abstract the operations for root & nvdimm devices 

It separates the operations between root device and nvdimm devices
in order to introducing label functions support for nvdimm device

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Xiao Guangrong 2016-06-07 20:22:04 +08:00 committed by Michael S. Tsirkin
parent 90623ebf60
commit 189f4d5635
1 changed files with 56 additions and 18 deletions
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74
hw/acpi/nvdimm.c
View File

@ -406,6 +406,55 @@ struct NvdimmDsmFuncNoPayloadOut {
} QEMU_PACKED;
typedef struct NvdimmDsmFuncNoPayloadOut NvdimmDsmFuncNoPayloadOut;
static void
nvdimm_dsm_function0(uint32_t supported_func, hwaddr dsm_mem_addr)
{
NvdimmDsmFunc0Out func0 = {
.len = cpu_to_le32(sizeof(func0)),
.supported_func = cpu_to_le32(supported_func),
};
cpu_physical_memory_write(dsm_mem_addr, &func0, sizeof(func0));
}
static void
nvdimm_dsm_no_payload(uint32_t func_ret_status, hwaddr dsm_mem_addr)
{
NvdimmDsmFuncNoPayloadOut out = {
.len = cpu_to_le32(sizeof(out)),
.func_ret_status = cpu_to_le32(func_ret_status),
};
cpu_physical_memory_write(dsm_mem_addr, &out, sizeof(out));
}
static void nvdimm_dsm_root(NvdimmDsmIn *in, hwaddr dsm_mem_addr)
{
/*
* function 0 is called to inquire which functions are supported by
* OSPM
*/
if (!in->function) {
nvdimm_dsm_function0(0 /* No function supported other than
function 0 */, dsm_mem_addr);
return;
}
/* No function except function 0 is supported yet. */
nvdimm_dsm_no_payload(1 /* Not Supported */, dsm_mem_addr);
}
static void nvdimm_dsm_device(NvdimmDsmIn *in, hwaddr dsm_mem_addr)
{
/* See the comments in nvdimm_dsm_root(). */
if (!in->function) {
nvdimm_dsm_function0(0 /* No function supported other than
function 0 */, dsm_mem_addr);
return;
}
/* No function except function 0 is supported yet. */
nvdimm_dsm_no_payload(1 /* Not Supported */, dsm_mem_addr);
}
static uint64_t
nvdimm_dsm_read(void *opaque, hwaddr addr, unsigned size)
{
@ -436,26 +485,15 @@ nvdimm_dsm_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
nvdimm_debug("Revision %#x Handler %#x Function %#x.\n", in->revision,
in->handle, in->function);
/*
* function 0 is called to inquire which functions are supported by
* OSPM
*/
if (in->function == 0) {
NvdimmDsmFunc0Out func0 = {
.len = cpu_to_le32(sizeof(func0)),
/* No function supported other than function 0 */
.supported_func = cpu_to_le32(0),
};
cpu_physical_memory_write(dsm_mem_addr, &func0, sizeof func0);
} else {
/* No function except function 0 is supported yet. */
NvdimmDsmFuncNoPayloadOut out = {
.len = cpu_to_le32(sizeof(out)),
.func_ret_status = cpu_to_le32(1) /* Not Supported */,
};
cpu_physical_memory_write(dsm_mem_addr, &out, sizeof(out));
/* Handle 0 is reserved for NVDIMM Root Device. */
if (!in->handle) {
nvdimm_dsm_root(in, dsm_mem_addr);
goto exit;
}
nvdimm_dsm_device(in, dsm_mem_addr);
exit:
g_free(in);
}