Function 4 is used to get Namespace lable size
Signed-off-by: Xiao Guangrong guangrong.x...@linux.intel.com
---
hw/mem/nvdimm/acpi.c | 70
1 file changed, 70 insertions(+)
diff --git a/hw/mem/nvdimm/acpi.c b/hw/mem/nvdimm/acpi.c
index 20aefce..0a5f2c2 100644
--- a/hw/mem/nvdimm/acpi.c
+++ b/hw/mem/nvdimm/acpi.c
@@ -334,6 +334,17 @@ enum {
| (1 NFIT_CMD_GET_CONFIG_SIZE)\
| (1 NFIT_CMD_GET_CONFIG_DATA))
+struct cmd_in_get_config_data {
+uint32_t offset;
+uint32_t length;
+} QEMU_PACKED;
+
+struct cmd_in_set_config_data {
+uint32_t offset;
+uint32_t length;
+uint8_t in_buf[0];
+} QEMU_PACKED;
+
struct dsm_buffer {
/* RAM page. */
uint32_t handle;
@@ -341,6 +352,7 @@ struct dsm_buffer {
uint32_t arg1;
uint32_t arg2;
union {
+struct cmd_in_set_config_data cmd_config_set;
char arg3[PAGE_SIZE - 3 * sizeof(uint32_t) - 16 * sizeof(uint8_t)];
};
@@ -358,10 +370,23 @@ struct cmd_out_implemented {
uint64_t cmd_list;
};
+struct cmd_out_get_config_size {
+uint32_t status;
+uint32_t config_size;
+uint32_t max_xfer;
+} QEMU_PACKED;
+
+struct cmd_out_get_config_data {
+uint32_t status;
+uint8_t out_buf[0];
+} QEMU_PACKED;
+
struct dsm_out {
union {
uint32_t status;
struct cmd_out_implemented cmd_implemented;
+struct cmd_out_get_config_size cmd_config_size;
+struct cmd_out_get_config_data cmd_config_get;
uint8_t data[PAGE_SIZE];
};
};
@@ -387,6 +412,48 @@ static void dsm_write_root(struct dsm_buffer *in, struct
dsm_out *out)
nvdebug(Return status %#x.\n, out-status);
}
+/*
+ * the max transfer size is the max size transfered by both a
+ * NFIT_CMD_GET_CONFIG_DATA and a NFIT_CMD_SET_CONFIG_DATA
+ * command.
+ */
+static uint32_t max_xfer_config_size(void)
+{
+struct dsm_buffer *in;
+struct dsm_out *out;
+uint32_t max_get_size, max_set_size;
+
+/*
+ * the max data ACPI can read one time which is transfered by
+ * the response of NFIT_CMD_GET_CONFIG_DATA.
+ */
+max_get_size = sizeof(out-data) - sizeof(out-cmd_config_get);
+
+/*
+ * the max data ACPI can write one time which is transfered by
+ * NFIT_CMD_SET_CONFIG_DATA
+ */
+max_set_size = sizeof(in-arg3) - sizeof(in-cmd_config_set);
+return MIN(max_get_size, max_set_size);
+}
+
+static uint32_t
+dsm_cmd_config_size(PCNVDIMMDevice *nvdimm, struct dsm_buffer *in,
+struct dsm_out *out)
+{
+uint32_t config_size, mxfer;
+
+config_size = nvdimm-config_data_size;
+mxfer = max_xfer_config_size();
+
+out-cmd_config_size.config_size = cpu_to_le32(config_size);
+out-cmd_config_size.max_xfer = cpu_to_le32(mxfer);
+nvdebug(%s config_size %#x, max_xfer %#x.\n, __func__, config_size,
+mxfer);
+
+return NFIT_STATUS_SUCCESS;
+}
+
static void dsm_write_nvdimm(struct dsm_buffer *in, struct dsm_out *out)
{
GSList *list = get_nvdimm_built_list();
@@ -408,6 +475,9 @@ static void dsm_write_nvdimm(struct dsm_buffer *in, struct
dsm_out *out)
out-cmd_implemented.cmd_list = cpu_to_le64(cmd_list);
goto free;
+case NFIT_CMD_GET_CONFIG_SIZE:
+status = dsm_cmd_config_size(nvdimm, in, out);
+break;
default:
status = NFIT_STATUS_NOT_SUPPORTED;
};
--
2.4.3
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