From: Anisa Su <anisa...@samsung.com>
FM DCD Management command 0x5600 implemented per CXL 3.2 Spec Section 7.6.7.6.1.
Reviewed-by: Fan Ni <fan...@samsung.com>
Signed-off-by: Anisa Su <anisa...@samsung.com>
---
hw/cxl/cxl-mailbox-utils.c | 59 +++++++++++++++++++++++++++++++++++++
hw/mem/cxl_type3.c | 4 +++
include/hw/cxl/cxl_device.h | 1 +
3 files changed, 64 insertions(+)
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index 0b615ea37a..3304048922 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -23,6 +23,7 @@
#include "qemu/uuid.h"
#include "system/hostmem.h"
#include "qemu/range.h"
+#include "qapi/qapi-types-cxl.h"
#define CXL_CAPACITY_MULTIPLIER (256 * MiB)
#define CXL_DC_EVENT_LOG_SIZE 8
@@ -117,6 +118,8 @@ enum {
#define GET_PHYSICAL_PORT_STATE 0x1
TUNNEL = 0x53,
#define MANAGEMENT_COMMAND 0x0
+ FMAPI_DCD_MGMT = 0x56,
+ #define GET_DCD_INFO 0x0
};
/* CCI Message Format CXL r3.1 Figure 7-19 */
@@ -3237,6 +3240,52 @@ static CXLRetCode cmd_dcd_release_dyn_cap(const struct
cxl_cmd *cmd,
return CXL_MBOX_SUCCESS;
}
+/* CXL r3.2 section 7.6.7.6.1: Get DCD Info (Opcode 5600h) */
+static CXLRetCode cmd_fm_get_dcd_info(const struct cxl_cmd *cmd,
+ uint8_t *payload_in,
+ size_t len_in,
+ uint8_t *payload_out,
+ size_t *len_out,
+ CXLCCI *cci)
+{
+ struct {
+ uint8_t num_hosts;
+ uint8_t num_regions_supported;
+ uint8_t rsvd1[2];
+ uint16_t supported_add_sel_policy_bitmask;
+ uint8_t rsvd2[2];
+ uint16_t supported_removal_policy_bitmask;
+ uint8_t sanitize_on_release_bitmask;
+ uint8_t rsvd3;
+ uint64_t total_dynamic_capacity;
+ uint64_t region_blk_size_bitmasks[8];
+ } QEMU_PACKED *out = (void *)payload_out;
+ CXLType3Dev *ct3d = CXL_TYPE3(cci->d);
+ CXLDCRegion *region;
+ int i;
+
+ out->num_hosts = 1;
+ out->num_regions_supported = ct3d->dc.num_regions;
+ stw_le_p(&out->supported_add_sel_policy_bitmask,
+ BIT(CXL_EXTENT_SELECTION_POLICY_PRESCRIPTIVE));
+ stw_le_p(&out->supported_removal_policy_bitmask,
+ BIT(CXL_EXTENT_REMOVAL_POLICY_PRESCRIPTIVE));
+ out->sanitize_on_release_bitmask = 0;
+
+ stq_le_p(&out->total_dynamic_capacity,
+ ct3d->dc.total_capacity / CXL_CAPACITY_MULTIPLIER);
+
+ for (i = 0; i < ct3d->dc.num_regions; i++) {
+ region = &ct3d->dc.regions[i];
+ memcpy(&out->region_blk_size_bitmasks[i],
+ ®ion->supported_blk_size_bitmask,
+ sizeof(out->region_blk_size_bitmasks[i]));
+ }
+
+ *len_out = sizeof(*out);
+ return CXL_MBOX_SUCCESS;
+}
+
static const struct cxl_cmd cxl_cmd_set[256][256] = {
[INFOSTAT][BACKGROUND_OPERATION_ABORT] = { "BACKGROUND_OPERATION_ABORT",
cmd_infostat_bg_op_abort, 0, 0 },
@@ -3350,6 +3399,11 @@ static const struct cxl_cmd cxl_cmd_set_sw[256][256] = {
cmd_tunnel_management_cmd, ~0, 0 },
};
+static const struct cxl_cmd cxl_cmd_set_fm_dcd[256][256] = {
+ [FMAPI_DCD_MGMT][GET_DCD_INFO] = { "GET_DCD_INFO",
+ cmd_fm_get_dcd_info, 0, 0 },
+};
+
/*
* While the command is executing in the background, the device should
* update the percentage complete in the Background Command Status Register
@@ -3624,7 +3678,12 @@ void cxl_initialize_t3_fm_owned_ld_mctpcci(CXLCCI *cci,
DeviceState *d,
DeviceState *intf,
size_t payload_max)
{
+ CXLType3Dev *ct3d = CXL_TYPE3(d);
+
cxl_copy_cci_commands(cci, cxl_cmd_set_t3_fm_owned_ld_mctp);
+ if (ct3d->dc.num_regions) {
+ cxl_copy_cci_commands(cci, cxl_cmd_set_fm_dcd);
+ }
cci->d = d;
cci->intf = intf;
cxl_init_cci(cci, payload_max);
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index f283178d88..f608470362 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -8,6 +8,7 @@
*
* SPDX-License-Identifier: GPL-v2-only
*/
+#include <math.h>
#include "qemu/osdep.h"
#include "qemu/units.h"
@@ -634,6 +635,8 @@ static bool cxl_create_dc_regions(CXLType3Dev *ct3d, Error
**errp)
uint64_t region_len;
uint64_t decode_len;
uint64_t blk_size = 2 * MiB;
+ /* Only 1 block size is supported for now. */
+ uint64_t supported_blk_size_bitmask = BIT((int) log2(blk_size));
CXLDCRegion *region;
MemoryRegion *mr;
uint64_t dc_size;
@@ -679,6 +682,7 @@ static bool cxl_create_dc_regions(CXLType3Dev *ct3d, Error
**errp)
.block_size = blk_size,
/* dsmad_handle set when creating CDAT table entries */
.flags = 0,
+ .supported_blk_size_bitmask = supported_blk_size_bitmask,
};
ct3d->dc.total_capacity += region->len;
region->blk_bitmap = bitmap_new(region->len / region->block_size);
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index a151e19da8..7eade9cf8a 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -530,6 +530,7 @@ typedef struct CXLDCRegion {
uint32_t dsmadhandle;
uint8_t flags;
unsigned long *blk_bitmap;
+ uint64_t supported_blk_size_bitmask;
} CXLDCRegion;
typedef struct CXLSetFeatureInfo {
--
2.47.2
