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nvdimm acpi: introduce NVDIMM_DSM_MEMORY_SIZE

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and use it to replace the raw number

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>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
This commit is contained in:
Xiao Guangrong 2016-11-07 19:13:49 +08:00 committed by Michael S. Tsirkin
parent aef056c11d
commit cb88ebd754
1 changed files with 17 additions and 13 deletions
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30
hw/acpi/nvdimm.c
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@ -404,6 +404,8 @@ static void nvdimm_build_nfit(AcpiNVDIMMState *state, GArray *table_offsets,
sizeof(NvdimmNfitHeader) + fit_buf->fit->len, 1, NULL, NULL);
}
#define NVDIMM_DSM_MEMORY_SIZE 4096
struct NvdimmDsmIn {
uint32_t handle;
uint32_t revision;
@ -414,7 +416,7 @@ struct NvdimmDsmIn {
};
} QEMU_PACKED;
typedef struct NvdimmDsmIn NvdimmDsmIn;
QEMU_BUILD_BUG_ON(sizeof(NvdimmDsmIn) != 4096);
QEMU_BUILD_BUG_ON(sizeof(NvdimmDsmIn) != NVDIMM_DSM_MEMORY_SIZE);
struct NvdimmDsmOut {
/* the size of buffer filled by QEMU. */
@ -422,7 +424,7 @@ struct NvdimmDsmOut {
uint8_t data[4092];
} QEMU_PACKED;
typedef struct NvdimmDsmOut NvdimmDsmOut;
QEMU_BUILD_BUG_ON(sizeof(NvdimmDsmOut) != 4096);
QEMU_BUILD_BUG_ON(sizeof(NvdimmDsmOut) != NVDIMM_DSM_MEMORY_SIZE);
struct NvdimmDsmFunc0Out {
/* the size of buffer filled by QEMU. */
@ -450,7 +452,7 @@ struct NvdimmFuncGetLabelSizeOut {
uint32_t max_xfer;
} QEMU_PACKED;
typedef struct NvdimmFuncGetLabelSizeOut NvdimmFuncGetLabelSizeOut;
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelSizeOut) > 4096);
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelSizeOut) > NVDIMM_DSM_MEMORY_SIZE);
struct NvdimmFuncGetLabelDataIn {
uint32_t offset; /* the offset in the namespace label data area. */
@ -458,7 +460,7 @@ struct NvdimmFuncGetLabelDataIn {
} QEMU_PACKED;
typedef struct NvdimmFuncGetLabelDataIn NvdimmFuncGetLabelDataIn;
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataIn) +
offsetof(NvdimmDsmIn, arg3) > 4096);
offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE);
struct NvdimmFuncGetLabelDataOut {
/* the size of buffer filled by QEMU. */
@ -467,7 +469,7 @@ struct NvdimmFuncGetLabelDataOut {
uint8_t out_buf[0]; /* the data got via Get Namesapce Label function. */
} QEMU_PACKED;
typedef struct NvdimmFuncGetLabelDataOut NvdimmFuncGetLabelDataOut;
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataOut) > 4096);
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataOut) > NVDIMM_DSM_MEMORY_SIZE);
struct NvdimmFuncSetLabelDataIn {
uint32_t offset; /* the offset in the namespace label data area. */
@ -476,14 +478,14 @@ struct NvdimmFuncSetLabelDataIn {
} QEMU_PACKED;
typedef struct NvdimmFuncSetLabelDataIn NvdimmFuncSetLabelDataIn;
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncSetLabelDataIn) +
offsetof(NvdimmDsmIn, arg3) > 4096);
offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE);
struct NvdimmFuncReadFITIn {
uint32_t offset; /* the offset into FIT buffer. */
} QEMU_PACKED;
typedef struct NvdimmFuncReadFITIn NvdimmFuncReadFITIn;
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncReadFITIn) +
offsetof(NvdimmDsmIn, arg3) > 4096);
offsetof(NvdimmDsmIn, arg3) > NVDIMM_DSM_MEMORY_SIZE);
struct NvdimmFuncReadFITOut {
/* the size of buffer filled by QEMU. */
@ -492,7 +494,7 @@ struct NvdimmFuncReadFITOut {
uint8_t fit[0]; /* the FIT data. */
} QEMU_PACKED;
typedef struct NvdimmFuncReadFITOut NvdimmFuncReadFITOut;
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncReadFITOut) > 4096);
QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncReadFITOut) > NVDIMM_DSM_MEMORY_SIZE);
static void
nvdimm_dsm_function0(uint32_t supported_func, hwaddr dsm_mem_addr)
@ -556,7 +558,7 @@ static void nvdimm_dsm_func_read_fit(AcpiNVDIMMState *state, NvdimmDsmIn *in,
func_ret_status = NVDIMM_DSM_RET_STATUS_SUCCESS;
read_len = MIN(fit->len - read_fit->offset,
4096 - sizeof(NvdimmFuncReadFITOut));
NVDIMM_DSM_MEMORY_SIZE - sizeof(NvdimmFuncReadFITOut));
exit:
size = sizeof(NvdimmFuncReadFITOut) + read_len;
@ -610,7 +612,9 @@ static void nvdimm_dsm_root(NvdimmDsmIn *in, hwaddr dsm_mem_addr)
*/
static uint32_t nvdimm_get_max_xfer_label_size(void)
{
uint32_t max_get_size, max_set_size, dsm_memory_size = 4096;
uint32_t max_get_size, max_set_size, dsm_memory_size;
dsm_memory_size = NVDIMM_DSM_MEMORY_SIZE;
/*
* the max data ACPI can read one time which is transferred by
@ -707,7 +711,7 @@ static void nvdimm_dsm_get_label_data(NVDIMMDevice *nvdimm, NvdimmDsmIn *in,
}
size = sizeof(*get_label_data_out) + get_label_data->length;
assert(size <= 4096);
assert(size <= NVDIMM_DSM_MEMORY_SIZE);
get_label_data_out = g_malloc(size);
get_label_data_out->len = cpu_to_le32(size);
@ -745,8 +749,8 @@ static void nvdimm_dsm_set_label_data(NVDIMMDevice *nvdimm, NvdimmDsmIn *in,
return;
}
assert(offsetof(NvdimmDsmIn, arg3) +
sizeof(*set_label_data) + set_label_data->length <= 4096);
assert(offsetof(NvdimmDsmIn, arg3) + sizeof(*set_label_data) +
set_label_data->length <= NVDIMM_DSM_MEMORY_SIZE);
nvc->write_label_data(nvdimm, set_label_data->in_buf,
set_label_data->length, set_label_data->offset);