| Message ID | 20230725183939.2741025-7-fan.ni@samsung.com |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Enabling DCD emulation support in Qemu | expand |
On Tue, 25 Jul 2023 18:39:56 +0000 Fan Ni <fan.ni@samsung.com> wrote: > From: Fan Ni <nifan@outlook.com> > > Add dynamic capacity extent list representative to the definition of > CXLType3Dev and add get DC extent list mailbox command per > CXL.spec.3.0:.8.2.9.8.9.2. > > Signed-off-by: Fan Ni <fan.ni@samsung.com> A couple of general name format changes. Otherwise LGTM Jonathan > --- > hw/cxl/cxl-mailbox-utils.c | 71 +++++++++++++++++++++++++++++++++++++ > hw/mem/cxl_type3.c | 1 + > include/hw/cxl/cxl_device.h | 23 ++++++++++++ > 3 files changed, 95 insertions(+) > > diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c > index 0511b8e6f7..3d25a9697e 100644 > --- a/hw/cxl/cxl-mailbox-utils.c > +++ b/hw/cxl/cxl-mailbox-utils.c > @@ -83,6 +83,7 @@ enum { > #define CLEAR_POISON 0x2 > DCD_CONFIG = 0x48, /*r3.0: 8.2.9.8.9*/ > #define GET_DC_CONFIG 0x0 > + #define GET_DYN_CAP_EXT_LIST 0x1 > PHYSICAL_SWITCH = 0x51 > #define IDENTIFY_SWITCH_DEVICE 0x0 > }; > @@ -1018,6 +1019,73 @@ static CXLRetCode cmd_dcd_get_dyn_cap_config(struct cxl_cmd *cmd, > return CXL_MBOX_SUCCESS; > } > > +/* > + * cxl spec 3.0: 8.2.9.8.9.2 > + * Get Dynamic Capacity Extent List (Opcode 4810h) > + */ > +static CXLRetCode cmd_dcd_get_dyn_cap_ext_list(struct cxl_cmd *cmd, > + CXLDeviceState *cxl_dstate, > + uint16_t *len) > +{ > + struct get_dyn_cap_ext_list_in_pl { > + uint32_t extent_cnt; > + uint32_t start_extent_id; > + } QEMU_PACKED; > + > + struct get_dyn_cap_ext_list_out_pl { > + uint32_t count; > + uint32_t total_extents; > + uint32_t generation_num; > + uint8_t rsvd[4]; > + CXLDCExtent_raw records[]; > + } QEMU_PACKED; > + > + struct get_dyn_cap_ext_list_in_pl *in = (void *)cmd->payload; > + struct get_dyn_cap_ext_list_out_pl *out = (void *)cmd->payload; > + struct CXLType3Dev *ct3d = container_of(cxl_dstate, CXLType3Dev, > + cxl_dstate); > + uint16_t record_count = 0, i = 0, record_done = 0; > + CXLDCDExtentList *extent_list = &ct3d->dc.extents; > + CXLDCD_Extent *ent; > + uint16_t out_pl_len; > + uint32_t start_extent_id = in->start_extent_id; > + > + if (start_extent_id > ct3d->dc.total_extent_count) { > + return CXL_MBOX_INVALID_INPUT; > + } > + > + record_count = MIN(in->extent_cnt, > + ct3d->dc.total_extent_count - start_extent_id); > + > + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); > + /* May need more processing here in the future */ > + assert(out_pl_len <= CXL_MAILBOX_MAX_PAYLOAD_SIZE); > + > + memset(out, 0, out_pl_len); > + stl_le_p(&out->count, record_count); > + stl_le_p(&out->total_extents, ct3d->dc.total_extent_count); > + stl_le_p(&out->generation_num, ct3d->dc.ext_list_gen_seq); > + > + if (record_count > 0) { > + QTAILQ_FOREACH(ent, extent_list, node) { > + if (i++ < start_extent_id) { > + continue; > + } > + stq_le_p(&out->records[record_done].start_dpa, ent->start_dpa); > + stq_le_p(&out->records[record_done].len, ent->len); > + memcpy(&out->records[record_done].tag, ent->tag, 0x10); > + stw_le_p(&out->records[record_done].shared_seq, ent->shared_seq); > + record_done++; > + if (record_done == record_count) { > + break; > + } > + } > + } > + > + *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) > @@ -1058,6 +1126,9 @@ static struct cxl_cmd cxl_cmd_set[256][256] = { > cmd_media_clear_poison, 72, 0 }, > [DCD_CONFIG][GET_DC_CONFIG] = { "DCD_GET_DC_CONFIG", > cmd_dcd_get_dyn_cap_config, 2, 0 }, > + [DCD_CONFIG][GET_DYN_CAP_EXT_LIST] = { > + "DCD_GET_DYNAMIC_CAPACITY_EXTENT_LIST", cmd_dcd_get_dyn_cap_ext_list, > + 8, 0 }, > }; > > static struct cxl_cmd cxl_cmd_set_sw[256][256] = { > diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c > index 76bbd9f785..f1170b8047 100644 > --- a/hw/mem/cxl_type3.c > +++ b/hw/mem/cxl_type3.c > @@ -789,6 +789,7 @@ static int cxl_create_dc_regions(CXLType3Dev *ct3d) > > region_base += region->len; > } > + QTAILQ_INIT(&ct3d->dc.extents); > > return 0; > } > diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h > index 1c99b05a66..3a338b3b37 100644 > --- a/include/hw/cxl/cxl_device.h > +++ b/include/hw/cxl/cxl_device.h > @@ -385,6 +385,25 @@ typedef QLIST_HEAD(, CXLPoison) CXLPoisonList; > > #define DCD_MAX_REGION_NUM 8 > > +typedef struct CXLDCD_Extent_raw { Renamed to match QEMU naming conventions (more or less) CXLDCDExtentRaw > + uint64_t start_dpa; > + uint64_t len; > + uint8_t tag[0x10]; > + uint16_t shared_seq; > + uint8_t rsvd[0x6]; > +} QEMU_PACKED CXLDCExtent_raw; > + > +typedef struct CXLDCD_Extent { CXLDCDExtent > + uint64_t start_dpa; > + uint64_t len; > + uint8_t tag[0x10]; > + uint16_t shared_seq; > + uint8_t rsvd[0x6]; > + > + QTAILQ_ENTRY(CXLDCD_Extent) node; > +} CXLDCD_Extent; > +typedef QTAILQ_HEAD(, CXLDCD_Extent) CXLDCDExtentList; > + > typedef struct CXLDCD_Region { > uint64_t base; > uint64_t decode_len; /* in multiples of 256MB */ > @@ -433,6 +452,10 @@ struct CXLType3Dev { > > uint8_t num_regions; /* 0-8 regions */ > struct CXLDCD_Region regions[DCD_MAX_REGION_NUM]; > + CXLDCDExtentList extents; > + > + uint32_t total_extent_count; > + uint32_t ext_list_gen_seq; > } dc; > }; >
On 7/25/23 20:39, Fan Ni wrote: > From: Fan Ni <nifan@outlook.com> > > Add dynamic capacity extent list representative to the definition of > CXLType3Dev and add get DC extent list mailbox command per > CXL.spec.3.0:.8.2.9.8.9.2. > > Signed-off-by: Fan Ni <fan.ni@samsung.com> > --- > hw/cxl/cxl-mailbox-utils.c | 71 +++++++++++++++++++++++++++++++++++++ > hw/mem/cxl_type3.c | 1 + > include/hw/cxl/cxl_device.h | 23 ++++++++++++ > 3 files changed, 95 insertions(+) > > diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c > index 0511b8e6f7..3d25a9697e 100644 > --- a/hw/cxl/cxl-mailbox-utils.c > +++ b/hw/cxl/cxl-mailbox-utils.c > @@ -83,6 +83,7 @@ enum { > #define CLEAR_POISON 0x2 > DCD_CONFIG = 0x48, /*r3.0: 8.2.9.8.9*/ > #define GET_DC_CONFIG 0x0 > + #define GET_DYN_CAP_EXT_LIST 0x1 > PHYSICAL_SWITCH = 0x51 > #define IDENTIFY_SWITCH_DEVICE 0x0 > }; > @@ -1018,6 +1019,73 @@ static CXLRetCode cmd_dcd_get_dyn_cap_config(struct cxl_cmd *cmd, > return CXL_MBOX_SUCCESS; > } > > +/* > + * cxl spec 3.0: 8.2.9.8.9.2 > + * Get Dynamic Capacity Extent List (Opcode 4810h) > + */ > +static CXLRetCode cmd_dcd_get_dyn_cap_ext_list(struct cxl_cmd *cmd, > + CXLDeviceState *cxl_dstate, > + uint16_t *len) > +{ > + struct get_dyn_cap_ext_list_in_pl { > + uint32_t extent_cnt; > + uint32_t start_extent_id; > + } QEMU_PACKED; > + > + struct get_dyn_cap_ext_list_out_pl { > + uint32_t count; > + uint32_t total_extents; > + uint32_t generation_num; > + uint8_t rsvd[4]; > + CXLDCExtent_raw records[]; > + } QEMU_PACKED; > + > + struct get_dyn_cap_ext_list_in_pl *in = (void *)cmd->payload; > + struct get_dyn_cap_ext_list_out_pl *out = (void *)cmd->payload; > + struct CXLType3Dev *ct3d = container_of(cxl_dstate, CXLType3Dev, > + cxl_dstate); > + uint16_t record_count = 0, i = 0, record_done = 0; > + CXLDCDExtentList *extent_list = &ct3d->dc.extents; > + CXLDCD_Extent *ent; > + uint16_t out_pl_len; > + uint32_t start_extent_id = in->start_extent_id; > + > + if (start_extent_id > ct3d->dc.total_extent_count) { > + return CXL_MBOX_INVALID_INPUT; > + } > + > + record_count = MIN(in->extent_cnt, > + ct3d->dc.total_extent_count - start_extent_id); > + > + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); > + /* May need more processing here in the future */ > + assert(out_pl_len <= CXL_MAILBOX_MAX_PAYLOAD_SIZE); > + > + memset(out, 0, out_pl_len); > + stl_le_p(&out->count, record_count); > + stl_le_p(&out->total_extents, ct3d->dc.total_extent_count); > + stl_le_p(&out->generation_num, ct3d->dc.ext_list_gen_seq); > + > + if (record_count > 0) { > + QTAILQ_FOREACH(ent, extent_list, node) { > + if (i++ < start_extent_id) { > + continue; > + } > + stq_le_p(&out->records[record_done].start_dpa, ent->start_dpa); > + stq_le_p(&out->records[record_done].len, ent->len); > + memcpy(&out->records[record_done].tag, ent->tag, 0x10); > + stw_le_p(&out->records[record_done].shared_seq, ent->shared_seq); > + record_done++; > + if (record_done == record_count) { > + break; > + } > + } > + } > + > + *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) > @@ -1058,6 +1126,9 @@ static struct cxl_cmd cxl_cmd_set[256][256] = { > cmd_media_clear_poison, 72, 0 }, > [DCD_CONFIG][GET_DC_CONFIG] = { "DCD_GET_DC_CONFIG", > cmd_dcd_get_dyn_cap_config, 2, 0 }, > + [DCD_CONFIG][GET_DYN_CAP_EXT_LIST] = { > + "DCD_GET_DYNAMIC_CAPACITY_EXTENT_LIST", cmd_dcd_get_dyn_cap_ext_list, > + 8, 0 }, > }; > > static struct cxl_cmd cxl_cmd_set_sw[256][256] = { > diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c > index 76bbd9f785..f1170b8047 100644 > --- a/hw/mem/cxl_type3.c > +++ b/hw/mem/cxl_type3.c > @@ -789,6 +789,7 @@ static int cxl_create_dc_regions(CXLType3Dev *ct3d) > > region_base += region->len; > } > + QTAILQ_INIT(&ct3d->dc.extents); > > return 0; > } > diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h > index 1c99b05a66..3a338b3b37 100644 > --- a/include/hw/cxl/cxl_device.h > +++ b/include/hw/cxl/cxl_device.h > @@ -385,6 +385,25 @@ typedef QLIST_HEAD(, CXLPoison) CXLPoisonList; > > #define DCD_MAX_REGION_NUM 8 > > +typedef struct CXLDCD_Extent_raw { > + uint64_t start_dpa; > + uint64_t len; > + uint8_t tag[0x10]; > + uint16_t shared_seq; > + uint8_t rsvd[0x6]; > +} QEMU_PACKED CXLDCExtent_raw; > + > +typedef struct CXLDCD_Extent { > + uint64_t start_dpa; > + uint64_t len; > + uint8_t tag[0x10]; > + uint16_t shared_seq; > + uint8_t rsvd[0x6]; > + > + QTAILQ_ENTRY(CXLDCD_Extent) node; > +} CXLDCD_Extent; > +typedef QTAILQ_HEAD(, CXLDCD_Extent) CXLDCDExtentList; > + > typedef struct CXLDCD_Region { > uint64_t base; > uint64_t decode_len; /* in multiples of 256MB */ > @@ -433,6 +452,10 @@ struct CXLType3Dev { > > uint8_t num_regions; /* 0-8 regions */ > struct CXLDCD_Region regions[DCD_MAX_REGION_NUM]; > + CXLDCDExtentList extents; > + > + uint32_t total_extent_count; Hi, I don't see total_extent_count being updated anywhere. Shouldn't this be adjusted as part of cmd_dcd_add_dyn_cap_rsp()/cmd_dcd_release_dyn_cap()? Thanks, Jorgen > + uint32_t ext_list_gen_seq; > } dc; > }; > > -- > 2.25.1
On Fri, Sep 08, 2023 at 01:12:45PM +0000, J?rgen Hansen wrote: > On 7/25/23 20:39, Fan Ni wrote: > > From: Fan Ni <nifan@outlook.com> > > > > Add dynamic capacity extent list representative to the definition of > > CXLType3Dev and add get DC extent list mailbox command per > > CXL.spec.3.0:.8.2.9.8.9.2. > > > > Signed-off-by: Fan Ni <fan.ni@samsung.com> > > --- > > hw/cxl/cxl-mailbox-utils.c | 71 +++++++++++++++++++++++++++++++++++++ > > hw/mem/cxl_type3.c | 1 + > > include/hw/cxl/cxl_device.h | 23 ++++++++++++ > > 3 files changed, 95 insertions(+) > > > > diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c > > index 0511b8e6f7..3d25a9697e 100644 > > --- a/hw/cxl/cxl-mailbox-utils.c > > +++ b/hw/cxl/cxl-mailbox-utils.c > > @@ -83,6 +83,7 @@ enum { > > #define CLEAR_POISON 0x2 > > DCD_CONFIG = 0x48, /*r3.0: 8.2.9.8.9*/ > > #define GET_DC_CONFIG 0x0 > > + #define GET_DYN_CAP_EXT_LIST 0x1 > > PHYSICAL_SWITCH = 0x51 > > #define IDENTIFY_SWITCH_DEVICE 0x0 > > }; > > @@ -1018,6 +1019,73 @@ static CXLRetCode cmd_dcd_get_dyn_cap_config(struct cxl_cmd *cmd, > > return CXL_MBOX_SUCCESS; > > } > > > > +/* > > + * cxl spec 3.0: 8.2.9.8.9.2 > > + * Get Dynamic Capacity Extent List (Opcode 4810h) > > + */ > > +static CXLRetCode cmd_dcd_get_dyn_cap_ext_list(struct cxl_cmd *cmd, > > + CXLDeviceState *cxl_dstate, > > + uint16_t *len) > > +{ > > + struct get_dyn_cap_ext_list_in_pl { > > + uint32_t extent_cnt; > > + uint32_t start_extent_id; > > + } QEMU_PACKED; > > + > > + struct get_dyn_cap_ext_list_out_pl { > > + uint32_t count; > > + uint32_t total_extents; > > + uint32_t generation_num; > > + uint8_t rsvd[4]; > > + CXLDCExtent_raw records[]; > > + } QEMU_PACKED; > > + > > + struct get_dyn_cap_ext_list_in_pl *in = (void *)cmd->payload; > > + struct get_dyn_cap_ext_list_out_pl *out = (void *)cmd->payload; > > + struct CXLType3Dev *ct3d = container_of(cxl_dstate, CXLType3Dev, > > + cxl_dstate); > > + uint16_t record_count = 0, i = 0, record_done = 0; > > + CXLDCDExtentList *extent_list = &ct3d->dc.extents; > > + CXLDCD_Extent *ent; > > + uint16_t out_pl_len; > > + uint32_t start_extent_id = in->start_extent_id; > > + > > + if (start_extent_id > ct3d->dc.total_extent_count) { > > + return CXL_MBOX_INVALID_INPUT; > > + } > > + > > + record_count = MIN(in->extent_cnt, > > + ct3d->dc.total_extent_count - start_extent_id); > > + > > + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); > > + /* May need more processing here in the future */ > > + assert(out_pl_len <= CXL_MAILBOX_MAX_PAYLOAD_SIZE); > > + > > + memset(out, 0, out_pl_len); > > + stl_le_p(&out->count, record_count); > > + stl_le_p(&out->total_extents, ct3d->dc.total_extent_count); > > + stl_le_p(&out->generation_num, ct3d->dc.ext_list_gen_seq); > > + > > + if (record_count > 0) { > > + QTAILQ_FOREACH(ent, extent_list, node) { > > + if (i++ < start_extent_id) { > > + continue; > > + } > > + stq_le_p(&out->records[record_done].start_dpa, ent->start_dpa); > > + stq_le_p(&out->records[record_done].len, ent->len); > > + memcpy(&out->records[record_done].tag, ent->tag, 0x10); > > + stw_le_p(&out->records[record_done].shared_seq, ent->shared_seq); > > + record_done++; > > + if (record_done == record_count) { > > + break; > > + } > > + } > > + } > > + > > + *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) > > @@ -1058,6 +1126,9 @@ static struct cxl_cmd cxl_cmd_set[256][256] = { > > cmd_media_clear_poison, 72, 0 }, > > [DCD_CONFIG][GET_DC_CONFIG] = { "DCD_GET_DC_CONFIG", > > cmd_dcd_get_dyn_cap_config, 2, 0 }, > > + [DCD_CONFIG][GET_DYN_CAP_EXT_LIST] = { > > + "DCD_GET_DYNAMIC_CAPACITY_EXTENT_LIST", cmd_dcd_get_dyn_cap_ext_list, > > + 8, 0 }, > > }; > > > > static struct cxl_cmd cxl_cmd_set_sw[256][256] = { > > diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c > > index 76bbd9f785..f1170b8047 100644 > > --- a/hw/mem/cxl_type3.c > > +++ b/hw/mem/cxl_type3.c > > @@ -789,6 +789,7 @@ static int cxl_create_dc_regions(CXLType3Dev *ct3d) > > > > region_base += region->len; > > } > > + QTAILQ_INIT(&ct3d->dc.extents); > > > > return 0; > > } > > diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h > > index 1c99b05a66..3a338b3b37 100644 > > --- a/include/hw/cxl/cxl_device.h > > +++ b/include/hw/cxl/cxl_device.h > > @@ -385,6 +385,25 @@ typedef QLIST_HEAD(, CXLPoison) CXLPoisonList; > > > > #define DCD_MAX_REGION_NUM 8 > > > > +typedef struct CXLDCD_Extent_raw { > > + uint64_t start_dpa; > > + uint64_t len; > > + uint8_t tag[0x10]; > > + uint16_t shared_seq; > > + uint8_t rsvd[0x6]; > > +} QEMU_PACKED CXLDCExtent_raw; > > + > > +typedef struct CXLDCD_Extent { > > + uint64_t start_dpa; > > + uint64_t len; > > + uint8_t tag[0x10]; > > + uint16_t shared_seq; > > + uint8_t rsvd[0x6]; > > + > > + QTAILQ_ENTRY(CXLDCD_Extent) node; > > +} CXLDCD_Extent; > > +typedef QTAILQ_HEAD(, CXLDCD_Extent) CXLDCDExtentList; > > + > > typedef struct CXLDCD_Region { > > uint64_t base; > > uint64_t decode_len; /* in multiples of 256MB */ > > @@ -433,6 +452,10 @@ struct CXLType3Dev { > > > > uint8_t num_regions; /* 0-8 regions */ > > struct CXLDCD_Region regions[DCD_MAX_REGION_NUM]; > > + CXLDCDExtentList extents; > > + > > + uint32_t total_extent_count; > > Hi, > > I don't see total_extent_count being updated anywhere. Shouldn't this be > adjusted as part of cmd_dcd_add_dyn_cap_rsp()/cmd_dcd_release_dyn_cap()? > > Thanks, > Jorgen Good catch. Thanks Jorgen, will fix in the next version. Fan > > > > + uint32_t ext_list_gen_seq; > > } dc; > > }; > > > > -- > > 2.25.1
diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 0511b8e6f7..3d25a9697e 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -83,6 +83,7 @@ enum { #define CLEAR_POISON 0x2 DCD_CONFIG = 0x48, /*r3.0: 8.2.9.8.9*/ #define GET_DC_CONFIG 0x0 + #define GET_DYN_CAP_EXT_LIST 0x1 PHYSICAL_SWITCH = 0x51 #define IDENTIFY_SWITCH_DEVICE 0x0 }; @@ -1018,6 +1019,73 @@ static CXLRetCode cmd_dcd_get_dyn_cap_config(struct cxl_cmd *cmd, return CXL_MBOX_SUCCESS; } +/* + * cxl spec 3.0: 8.2.9.8.9.2 + * Get Dynamic Capacity Extent List (Opcode 4810h) + */ +static CXLRetCode cmd_dcd_get_dyn_cap_ext_list(struct cxl_cmd *cmd, + CXLDeviceState *cxl_dstate, + uint16_t *len) +{ + struct get_dyn_cap_ext_list_in_pl { + uint32_t extent_cnt; + uint32_t start_extent_id; + } QEMU_PACKED; + + struct get_dyn_cap_ext_list_out_pl { + uint32_t count; + uint32_t total_extents; + uint32_t generation_num; + uint8_t rsvd[4]; + CXLDCExtent_raw records[]; + } QEMU_PACKED; + + struct get_dyn_cap_ext_list_in_pl *in = (void *)cmd->payload; + struct get_dyn_cap_ext_list_out_pl *out = (void *)cmd->payload; + struct CXLType3Dev *ct3d = container_of(cxl_dstate, CXLType3Dev, + cxl_dstate); + uint16_t record_count = 0, i = 0, record_done = 0; + CXLDCDExtentList *extent_list = &ct3d->dc.extents; + CXLDCD_Extent *ent; + uint16_t out_pl_len; + uint32_t start_extent_id = in->start_extent_id; + + if (start_extent_id > ct3d->dc.total_extent_count) { + return CXL_MBOX_INVALID_INPUT; + } + + record_count = MIN(in->extent_cnt, + ct3d->dc.total_extent_count - start_extent_id); + + out_pl_len = sizeof(*out) + record_count * sizeof(out->records[0]); + /* May need more processing here in the future */ + assert(out_pl_len <= CXL_MAILBOX_MAX_PAYLOAD_SIZE); + + memset(out, 0, out_pl_len); + stl_le_p(&out->count, record_count); + stl_le_p(&out->total_extents, ct3d->dc.total_extent_count); + stl_le_p(&out->generation_num, ct3d->dc.ext_list_gen_seq); + + if (record_count > 0) { + QTAILQ_FOREACH(ent, extent_list, node) { + if (i++ < start_extent_id) { + continue; + } + stq_le_p(&out->records[record_done].start_dpa, ent->start_dpa); + stq_le_p(&out->records[record_done].len, ent->len); + memcpy(&out->records[record_done].tag, ent->tag, 0x10); + stw_le_p(&out->records[record_done].shared_seq, ent->shared_seq); + record_done++; + if (record_done == record_count) { + break; + } + } + } + + *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) @@ -1058,6 +1126,9 @@ static struct cxl_cmd cxl_cmd_set[256][256] = { cmd_media_clear_poison, 72, 0 }, [DCD_CONFIG][GET_DC_CONFIG] = { "DCD_GET_DC_CONFIG", cmd_dcd_get_dyn_cap_config, 2, 0 }, + [DCD_CONFIG][GET_DYN_CAP_EXT_LIST] = { + "DCD_GET_DYNAMIC_CAPACITY_EXTENT_LIST", cmd_dcd_get_dyn_cap_ext_list, + 8, 0 }, }; static struct cxl_cmd cxl_cmd_set_sw[256][256] = { diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c index 76bbd9f785..f1170b8047 100644 --- a/hw/mem/cxl_type3.c +++ b/hw/mem/cxl_type3.c @@ -789,6 +789,7 @@ static int cxl_create_dc_regions(CXLType3Dev *ct3d) region_base += region->len; } + QTAILQ_INIT(&ct3d->dc.extents); return 0; } diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h index 1c99b05a66..3a338b3b37 100644 --- a/include/hw/cxl/cxl_device.h +++ b/include/hw/cxl/cxl_device.h @@ -385,6 +385,25 @@ typedef QLIST_HEAD(, CXLPoison) CXLPoisonList; #define DCD_MAX_REGION_NUM 8 +typedef struct CXLDCD_Extent_raw { + uint64_t start_dpa; + uint64_t len; + uint8_t tag[0x10]; + uint16_t shared_seq; + uint8_t rsvd[0x6]; +} QEMU_PACKED CXLDCExtent_raw; + +typedef struct CXLDCD_Extent { + uint64_t start_dpa; + uint64_t len; + uint8_t tag[0x10]; + uint16_t shared_seq; + uint8_t rsvd[0x6]; + + QTAILQ_ENTRY(CXLDCD_Extent) node; +} CXLDCD_Extent; +typedef QTAILQ_HEAD(, CXLDCD_Extent) CXLDCDExtentList; + typedef struct CXLDCD_Region { uint64_t base; uint64_t decode_len; /* in multiples of 256MB */ @@ -433,6 +452,10 @@ struct CXLType3Dev { uint8_t num_regions; /* 0-8 regions */ struct CXLDCD_Region regions[DCD_MAX_REGION_NUM]; + CXLDCDExtentList extents; + + uint32_t total_extent_count; + uint32_t ext_list_gen_seq; } dc; };