On Wed, Jul 02, 2025 at 05:02:15PM +0100, Jonathan Cameron wrote:
> From: Anisa Su <anisa...@samsung.com>
>
> Prepatory patch for following FMAPI Add/Release Patches. Refactors part
> of qmp_cxl_process_dynamic_capacity_prescriptive() into a helper
> function to create DC Event Records and insert in the event log.
>
> Moves definition for CXL_NUM_EXTENTS_SUPPORTED to cxl.h so it can be
> accessed by cxl-mailbox-utils.c and cxl-events.c, where the helper
> function is defined.
>
> Signed-off-by: Anisa Su <anisa...@samsung.com>
> Signed-off-by: Jonathan Cameron <jonathan.came...@huawei.com>
> ---
Reviewed-by: Fan Ni <fan...@samsung.com>
> include/hw/cxl/cxl.h | 1 +
> include/hw/cxl/cxl_device.h | 4 ++++
> hw/cxl/cxl-events.c | 38 +++++++++++++++++++++++++++++++++++++
> hw/cxl/cxl-mailbox-utils.c | 1 -
> hw/mem/cxl_type3.c | 37 +-----------------------------------
> 5 files changed, 44 insertions(+), 37 deletions(-)
>
> diff --git a/include/hw/cxl/cxl.h b/include/hw/cxl/cxl.h
> index 75e47b6864..3ae4303383 100644
> --- a/include/hw/cxl/cxl.h
> +++ b/include/hw/cxl/cxl.h
> @@ -23,6 +23,7 @@
> #define CXL_DEVICE_REG_BAR_IDX 2
>
> #define CXL_WINDOW_MAX 10
> +#define CXL_NUM_EXTENTS_SUPPORTED 512
>
> typedef struct PXBCXLDev PXBCXLDev;
>
> diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
> index 76af75d2d0..ed91e5387e 100644
> --- a/include/hw/cxl/cxl_device.h
> +++ b/include/hw/cxl/cxl_device.h
> @@ -724,4 +724,8 @@ bool ct3_test_region_block_backed(CXLType3Dev *ct3d,
> uint64_t dpa,
> void cxl_assign_event_header(CXLEventRecordHdr *hdr,
> const QemuUUID *uuid, uint32_t flags,
> uint8_t length, uint64_t timestamp);
> +void cxl_create_dc_event_records_for_extents(CXLType3Dev *ct3d,
> + CXLDCEventType type,
> + CXLDCExtentRaw extents[],
> + uint32_t ext_count);
> #endif
> diff --git a/hw/cxl/cxl-events.c b/hw/cxl/cxl-events.c
> index 12dee2e467..724055f2cf 100644
> --- a/hw/cxl/cxl-events.c
> +++ b/hw/cxl/cxl-events.c
> @@ -260,3 +260,41 @@ void cxl_event_irq_assert(CXLType3Dev *ct3d)
> }
> }
> }
> +
> +void cxl_create_dc_event_records_for_extents(CXLType3Dev *ct3d,
> + CXLDCEventType type,
> + CXLDCExtentRaw extents[],
> + uint32_t ext_count)
> +{
> + CXLEventDynamicCapacity event_rec = {};
> + int i;
> +
> + cxl_assign_event_header(&event_rec.hdr,
> + &dynamic_capacity_uuid,
> + (1 << CXL_EVENT_TYPE_INFO),
> + sizeof(event_rec),
> + cxl_device_get_timestamp(&ct3d->cxl_dstate));
> + event_rec.type = type;
> + event_rec.validity_flags = 1;
> + event_rec.host_id = 0;
> + event_rec.updated_region_id = 0;
> + event_rec.extents_avail = CXL_NUM_EXTENTS_SUPPORTED -
> + ct3d->dc.total_extent_count;
> +
> + for (i = 0; i < ext_count; i++) {
> + memcpy(&event_rec.dynamic_capacity_extent,
> + &extents[i],
> + sizeof(CXLDCExtentRaw));
> + event_rec.flags = 0;
> + if (i < ext_count - 1) {
> + /* Set "More" flag */
> + event_rec.flags |= BIT(0);
> + }
> +
> + if (cxl_event_insert(&ct3d->cxl_dstate,
> + CXL_EVENT_TYPE_DYNAMIC_CAP,
> + (CXLEventRecordRaw *)&event_rec)) {
> + cxl_event_irq_assert(ct3d);
> + }
> + }
> +}
> diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
> index 24e4ba0200..d0a1d63582 100644
> --- a/hw/cxl/cxl-mailbox-utils.c
> +++ b/hw/cxl/cxl-mailbox-utils.c
> @@ -27,7 +27,6 @@
>
> #define CXL_CAPACITY_MULTIPLIER (256 * MiB)
> #define CXL_DC_EVENT_LOG_SIZE 8
> -#define CXL_NUM_EXTENTS_SUPPORTED 512
> #define CXL_NUM_TAGS_SUPPORTED 0
> #define CXL_ALERTS_LIFE_USED_WARN_THRESH (1 << 0)
> #define CXL_ALERTS_OVER_TEMP_WARN_THRESH (1 << 1)
> diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
> index ee554a77be..9c2b9d197b 100644
> --- a/hw/mem/cxl_type3.c
> +++ b/hw/mem/cxl_type3.c
> @@ -1957,15 +1957,11 @@ static void
> qmp_cxl_process_dynamic_capacity_prescriptive(const char *path,
> CxlDynamicCapacityExtentList *records, Error **errp)
> {
> Object *obj;
> - CXLEventDynamicCapacity dCap = {};
> - CXLEventRecordHdr *hdr = &dCap.hdr;
> CXLType3Dev *dcd;
> - uint8_t flags = 1 << CXL_EVENT_TYPE_INFO;
> uint32_t num_extents = 0;
> CxlDynamicCapacityExtentList *list;
> CXLDCExtentGroup *group = NULL;
> g_autofree CXLDCExtentRaw *extents = NULL;
> - uint8_t enc_log = CXL_EVENT_TYPE_DYNAMIC_CAP;
> uint64_t dpa, offset, len, block_size;
> g_autofree unsigned long *blk_bitmap = NULL;
> int i;
> @@ -2078,38 +2074,7 @@ static void
> qmp_cxl_process_dynamic_capacity_prescriptive(const char *path,
> dcd->dc.total_extent_count += num_extents;
> }
>
> - /*
> - * CXL r3.1 section 8.2.9.2.1.6: Dynamic Capacity Event Record
> - *
> - * All Dynamic Capacity event records shall set the Event Record Severity
> - * field in the Common Event Record Format to Informational Event. All
> - * Dynamic Capacity related events shall be logged in the Dynamic
> Capacity
> - * Event Log.
> - */
> - cxl_assign_event_header(hdr, &dynamic_capacity_uuid, flags, sizeof(dCap),
> - cxl_device_get_timestamp(&dcd->cxl_dstate));
> -
> - dCap.type = type;
> - /* FIXME: for now, validity flag is cleared */
> - dCap.validity_flags = 0;
> - stw_le_p(&dCap.host_id, hid);
> - /* only valid for DC_REGION_CONFIG_UPDATED event */
> - dCap.updated_region_id = 0;
> - for (i = 0; i < num_extents; i++) {
> - memcpy(&dCap.dynamic_capacity_extent, &extents[i],
> - sizeof(CXLDCExtentRaw));
> -
> - dCap.flags = 0;
> - if (i < num_extents - 1) {
> - /* Set "More" flag */
> - dCap.flags |= BIT(0);
> - }
> -
> - if (cxl_event_insert(&dcd->cxl_dstate, enc_log,
> - (CXLEventRecordRaw *)&dCap)) {
> - cxl_event_irq_assert(dcd);
> - }
> - }
> + cxl_create_dc_event_records_for_extents(dcd, type, extents, num_extents);
> }
>
> void qmp_cxl_add_dynamic_capacity(const char *path, uint16_t host_id,
> --
> 2.48.1
>
--
Fan Ni (From gmail)
