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nvdimm acpi: use common macros instead of magic names 

There are some names repeatedly used in acpi code, define them
as macros to refine the code

Suggested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.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 2016-10-29 00:11:56 +08:00 committed by Michael S. Tsirkin
parent fa1a448dda
commit 3ae66c45f9
1 changed files with 49 additions and 34 deletions
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83
hw/acpi/nvdimm.c
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@ -773,8 +773,20 @@ void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io,
state->dsm_mem->len);
}
#define NVDIMM_COMMON_DSM "NCAL"
#define NVDIMM_ACPI_MEM_ADDR "MEMA"
#define NVDIMM_COMMON_DSM "NCAL"
#define NVDIMM_ACPI_MEM_ADDR "MEMA"
#define NVDIMM_DSM_MEMORY "NRAM"
#define NVDIMM_DSM_IOPORT "NPIO"
#define NVDIMM_DSM_NOTIFY "NTFI"
#define NVDIMM_DSM_HANDLE "HDLE"
#define NVDIMM_DSM_REVISION "REVS"
#define NVDIMM_DSM_FUNCTION "FUNC"
#define NVDIMM_DSM_ARG3 "FARG"
#define NVDIMM_DSM_OUT_BUF_SIZE "RLEN"
#define NVDIMM_DSM_OUT_BUF "ODAT"
static void nvdimm_build_common_dsm(Aml *dev)
{
@ -793,60 +805,63 @@ static void nvdimm_build_common_dsm(Aml *dev)
aml_append(method, aml_store(aml_name(NVDIMM_ACPI_MEM_ADDR), dsm_mem));
/* map DSM memory and IO into ACPI namespace. */
aml_append(method, aml_operation_region("NPIO", AML_SYSTEM_IO,
aml_append(method, aml_operation_region(NVDIMM_DSM_IOPORT, AML_SYSTEM_IO,
aml_int(NVDIMM_ACPI_IO_BASE), NVDIMM_ACPI_IO_LEN));
aml_append(method, aml_operation_region("NRAM", AML_SYSTEM_MEMORY,
dsm_mem, sizeof(NvdimmDsmIn)));
aml_append(method, aml_operation_region(NVDIMM_DSM_MEMORY,
AML_SYSTEM_MEMORY, dsm_mem, sizeof(NvdimmDsmIn)));
/*
* DSM notifier:
* NTFI: write the address of DSM memory and notify QEMU to emulate
* the access.
* NVDIMM_DSM_NOTIFY: write the address of DSM memory and notify QEMU to
* emulate the access.
*
* It is the IO port so that accessing them will cause VM-exit, the
* control will be transferred to QEMU.
*/
field = aml_field("NPIO", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("NTFI",
field = aml_field(NVDIMM_DSM_IOPORT, AML_DWORD_ACC, AML_NOLOCK,
AML_PRESERVE);
aml_append(field, aml_named_field(NVDIMM_DSM_NOTIFY,
sizeof(uint32_t) * BITS_PER_BYTE));
aml_append(method, field);
/*
* DSM input:
* HDLE: store device's handle, it's zero if the _DSM call happens
* on NVDIMM Root Device.
* REVS: store the Arg1 of _DSM call.
* FUNC: store the Arg2 of _DSM call.
* FARG: store the Arg3 of _DSM call which is a Package containing
* function-specific arguments.
* NVDIMM_DSM_HANDLE: store device's handle, it's zero if the _DSM call
* happens on NVDIMM Root Device.
* NVDIMM_DSM_REVISION: store the Arg1 of _DSM call.
* NVDIMM_DSM_FUNCTION: store the Arg2 of _DSM call.
* NVDIMM_DSM_ARG3: store the Arg3 of _DSM call which is a Package
* containing function-specific arguments.
*
* They are RAM mapping on host so that these accesses never cause
* VM-EXIT.
*/
field = aml_field("NRAM", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("HDLE",
field = aml_field(NVDIMM_DSM_MEMORY, AML_DWORD_ACC, AML_NOLOCK,
AML_PRESERVE);
aml_append(field, aml_named_field(NVDIMM_DSM_HANDLE,
sizeof(typeof_field(NvdimmDsmIn, handle)) * BITS_PER_BYTE));
aml_append(field, aml_named_field("REVS",
aml_append(field, aml_named_field(NVDIMM_DSM_REVISION,
sizeof(typeof_field(NvdimmDsmIn, revision)) * BITS_PER_BYTE));
aml_append(field, aml_named_field("FUNC",
aml_append(field, aml_named_field(NVDIMM_DSM_FUNCTION,
sizeof(typeof_field(NvdimmDsmIn, function)) * BITS_PER_BYTE));
aml_append(field, aml_named_field("FARG",
aml_append(field, aml_named_field(NVDIMM_DSM_ARG3,
(sizeof(NvdimmDsmIn) - offsetof(NvdimmDsmIn, arg3)) * BITS_PER_BYTE));
aml_append(method, field);
/*
* DSM output:
* RLEN: the size of the buffer filled by QEMU.
* ODAT: the buffer QEMU uses to store the result.
* NVDIMM_DSM_OUT_BUF_SIZE: the size of the buffer filled by QEMU.
* NVDIMM_DSM_OUT_BUF: the buffer QEMU uses to store the result.
*
* Since the page is reused by both input and out, the input data
* will be lost after storing new result into ODAT so we should fetch
* all the input data before writing the result.
*/
field = aml_field("NRAM", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("RLEN",
field = aml_field(NVDIMM_DSM_MEMORY, AML_DWORD_ACC, AML_NOLOCK,
AML_PRESERVE);
aml_append(field, aml_named_field(NVDIMM_DSM_OUT_BUF_SIZE,
sizeof(typeof_field(NvdimmDsmOut, len)) * BITS_PER_BYTE));
aml_append(field, aml_named_field("ODAT",
aml_append(field, aml_named_field(NVDIMM_DSM_OUT_BUF,
(sizeof(NvdimmDsmOut) - offsetof(NvdimmDsmOut, data)) * BITS_PER_BYTE));
aml_append(method, field);
@ -892,9 +907,9 @@ static void nvdimm_build_common_dsm(Aml *dev)
* it reserves 0 for root device and is the handle for NVDIMM devices.
* See the comments in nvdimm_slot_to_handle().
*/
aml_append(method, aml_store(handle, aml_name("HDLE")));
aml_append(method, aml_store(aml_arg(1), aml_name("REVS")));
aml_append(method, aml_store(aml_arg(2), aml_name("FUNC")));
aml_append(method, aml_store(handle, aml_name(NVDIMM_DSM_HANDLE)));
aml_append(method, aml_store(aml_arg(1), aml_name(NVDIMM_DSM_REVISION)));
aml_append(method, aml_store(aml_arg(2), aml_name(NVDIMM_DSM_FUNCTION)));
/*
* The fourth parameter (Arg3) of _DSM is a package which contains
@ -912,23 +927,23 @@ static void nvdimm_build_common_dsm(Aml *dev)
pckg_buf = aml_local(3);
aml_append(ifctx, aml_store(aml_index(pckg, aml_int(0)), pckg_index));
aml_append(ifctx, aml_store(aml_derefof(pckg_index), pckg_buf));
aml_append(ifctx, aml_store(pckg_buf, aml_name("FARG")));
aml_append(ifctx, aml_store(pckg_buf, aml_name(NVDIMM_DSM_ARG3)));
aml_append(method, ifctx);
/*
* tell QEMU about the real address of DSM memory, then QEMU
* gets the control and fills the result in DSM memory.
*/
aml_append(method, aml_store(dsm_mem, aml_name("NTFI")));
aml_append(method, aml_store(dsm_mem, aml_name(NVDIMM_DSM_NOTIFY)));
dsm_out_buf_size = aml_local(1);
/* RLEN is not included in the payload returned to guest. */
aml_append(method, aml_subtract(aml_name("RLEN"), aml_int(4),
dsm_out_buf_size));
aml_append(method, aml_subtract(aml_name(NVDIMM_DSM_OUT_BUF_SIZE),
aml_int(4), dsm_out_buf_size));
aml_append(method, aml_store(aml_shiftleft(dsm_out_buf_size, aml_int(3)),
dsm_out_buf_size));
aml_append(method, aml_create_field(aml_name("ODAT"), aml_int(0),
dsm_out_buf_size, "OBUF"));
aml_append(method, aml_create_field(aml_name(NVDIMM_DSM_OUT_BUF),
aml_int(0), dsm_out_buf_size, "OBUF"));
aml_append(method, aml_concatenate(aml_buffer(0, NULL), aml_name("OBUF"),
dsm_out_buf));
aml_append(method, aml_return(dsm_out_buf));