From: Fan Ni <ni...@outlook.com>
Per cxl spec 3.0, add dynamic capacity region representative based on
Table 8-126 and extend the cxl type3 device definition to include dc region
information. Also, based on info in 8.2.9.8.9.1, add 'Get Dynamic Capacity
Configuration' mailbox support.
Signed-off-by: Fan Ni <fan...@samsung.com>
---
hw/cxl/cxl-mailbox-utils.c | 69 +++++++++++++++++++++++++++++++++++++
include/hw/cxl/cxl_device.h | 16 +++++++++
2 files changed, 85 insertions(+)
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index b013e30314..41e43ec231 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -81,6 +81,8 @@ enum {
#define GET_POISON_LIST 0x0
#define INJECT_POISON 0x1
#define CLEAR_POISON 0x2
+ DCD_CONFIG = 0x48, /*r3.0: 8.2.9.8.9*/
+ #define GET_DC_CONFIG 0x0
PHYSICAL_SWITCH = 0x51
#define IDENTIFY_SWITCH_DEVICE 0x0
};
@@ -939,6 +941,71 @@ static CXLRetCode cmd_media_clear_poison(struct cxl_cmd
*cmd,
return CXL_MBOX_SUCCESS;
}
+/*
+ * cxl spec 3.0: 8.2.9.8.9.1
+ * Get Dynamic Capacity Configuration
+ **/
+static CXLRetCode cmd_dcd_get_dyn_cap_config(struct cxl_cmd *cmd,
+ CXLDeviceState *cxl_dstate,
+ uint16_t *len)
+{
+ struct get_dyn_cap_config_in_pl {
+ uint8_t region_cnt;
+ uint8_t start_region_id;
+ } QEMU_PACKED;
+
+ struct get_dyn_cap_config_out_pl {
+ uint8_t num_regions;
+ uint8_t rsvd1[7];
+ struct {
+ uint64_t base;
+ uint64_t decode_len;
+ uint64_t region_len;
+ uint64_t block_size;
+ uint32_t dsmadhandle;
+ uint8_t flags;
+ uint8_t rsvd2[3];
+ } QEMU_PACKED records[];
+ } QEMU_PACKED;
+
+ struct get_dyn_cap_config_in_pl *in = (void *)cmd->payload;
+ struct get_dyn_cap_config_out_pl *out = (void *)cmd->payload;
+ struct CXLType3Dev *ct3d = container_of(cxl_dstate, CXLType3Dev,
+ cxl_dstate);
+ uint16_t record_count = 0, i;
+ uint16_t out_pl_len;
+ uint8_t start_region_id = in->start_region_id;
+
+ if (start_region_id >= ct3d->dc.num_regions) {
+ return CXL_MBOX_INVALID_INPUT;
+ }
+
+ record_count = MIN(ct3d->dc.num_regions - in->start_region_id,
+ in->region_cnt);
+
+ out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]);
+ assert(out_pl_len <= CXL_MAILBOX_MAX_PAYLOAD_SIZE);
+
+ memset(out, 0, out_pl_len);
+ out->num_regions = record_count;
+ for (i = 0; i < record_count; i++) {
+ stq_le_p(&out->records[i].base,
+ ct3d->dc.regions[start_region_id + i].base);
+ stq_le_p(&out->records[i].decode_len,
+ ct3d->dc.regions[start_region_id + i].decode_len);
+ stq_le_p(&out->records[i].region_len,
+ ct3d->dc.regions[start_region_id + i].len);
+ stq_le_p(&out->records[i].block_size,
+ ct3d->dc.regions[start_region_id + i].block_size);
+ stl_le_p(&out->records[i].dsmadhandle,
+ ct3d->dc.regions[start_region_id + i].dsmadhandle);
+ out->records[i].flags = ct3d->dc.regions[start_region_id + i].flags;
+ }
+
+ *len = out_pl_len;
+ return CXL_MBOX_SUCCESS;
+}
+
#define IMMEDIATE_CONFIG_CHANGE (1 << 1)
#define IMMEDIATE_DATA_CHANGE (1 << 2)
#define IMMEDIATE_POLICY_CHANGE (1 << 3)
@@ -977,6 +1044,8 @@ static struct cxl_cmd cxl_cmd_set[256][256] = {
cmd_media_inject_poison, 8, 0 },
[MEDIA_AND_POISON][CLEAR_POISON] = { "MEDIA_AND_POISON_CLEAR_POISON",
cmd_media_clear_poison, 72, 0 },
+ [DCD_CONFIG][GET_DC_CONFIG] = { "DCD_GET_DC_CONFIG",
+ cmd_dcd_get_dyn_cap_config, 2, 0 },
};
static struct cxl_cmd cxl_cmd_set_sw[256][256] = {
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index cd7f28dba8..bf564f4a0b 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -382,6 +382,17 @@ typedef struct CXLPoison {
typedef QLIST_HEAD(, CXLPoison) CXLPoisonList;
#define CXL_POISON_LIST_LIMIT 256
+#define DCD_MAX_REGION_NUM 8
+
+typedef struct CXLDCD_Region {
+ uint64_t base;
+ uint64_t decode_len; /* in multiples of 256MB */
+ uint64_t len;
+ uint64_t block_size;
+ uint32_t dsmadhandle;
+ uint8_t flags;
+} CXLDCD_Region;
+
struct CXLType3Dev {
/* Private */
PCIDevice parent_obj;
@@ -413,6 +424,11 @@ struct CXLType3Dev {
unsigned int poison_list_cnt;
bool poison_list_overflowed;
uint64_t poison_list_overflow_ts;
+
+ struct dynamic_capacity {
+ uint8_t num_regions; /* 0-8 regions */
+ struct CXLDCD_Region regions[DCD_MAX_REGION_NUM];
+ } dc;
};
#define TYPE_CXL_TYPE3 "cxl-type3"
--
2.39.2
