[RFC,v3,28/31] hw/cxl/device: Plumb real LSA sizing

Commit Message

Ben Widawsky Feb. 2, 2021, 12:59 a.m. UTC

This should introduce no change. Subsequent work will make use of this
new class member.

Signed-off-by: Ben Widawsky <[e-mail]>
---
 hw/cxl/cxl-mailbox-utils.c  |  4 ++++
 hw/mem/cxl_type3.c          | 24 +++++++++---------------
 include/hw/cxl/cxl.h        |  1 -
 include/hw/cxl/cxl_device.h | 24 ++++++++++++++++++++++++
 4 files changed, 37 insertions(+), 16 deletions(-)

Patch

diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index dc8e0eb08e..2637250c7b 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -321,6 +321,9 @@  define_mailbox_handler(IDENTIFY_MEMORY_DEVICE)
     } __attribute__((packed)) *id;
     _Static_assert(sizeof(*id) == 0x43, "Bad identify size");
 
+    CXLType3Dev *ct3d = container_of(cxl_dstate, CXLType3Dev, cxl_dstate);
+    CXLType3Class *cvc = CXL_TYPE3_DEV_GET_CLASS(ct3d);
+
     if (memory_region_size(cxl_dstate->pmem) < (256 << 20)) {
         return CXL_MBOX_INTERNAL_ERROR;
     }
@@ -332,6 +335,7 @@  define_mailbox_handler(IDENTIFY_MEMORY_DEVICE)
     snprintf(id->fw_revision, 0x10, "BWFW VERSION %02d", 0);
     id->total_capacity = memory_region_size(cxl_dstate->pmem);
     id->persistent_capacity = memory_region_size(cxl_dstate->pmem);
+    id->lsa_size = cvc->get_lsa_size(ct3d);
 
     *len = sizeof(*id);
     return CXL_MBOX_SUCCESS;
diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
index fe02c3b63c..074d1dd41f 100644
--- a/hw/mem/cxl_type3.c
+++ b/hw/mem/cxl_type3.c
@@ -13,21 +13,6 @@ 
 #include "sysemu/hostmem.h"
 #include "hw/cxl/cxl.h"
 
-typedef struct cxl_type3_dev {
-    /* Private */
-    PCIDevice parent_obj;
-
-    /* Properties */
-    uint64_t size;
-    HostMemoryBackend *hostmem;
-
-    /* State */
-    CXLComponentState cxl_cstate;
-    CXLDeviceState cxl_dstate;
-} CXLType3Dev;
-
-#define CT3(obj) OBJECT_CHECK(CXLType3Dev, (obj), TYPE_CXL_TYPE3_DEV)
-
 static void build_dvsecs(CXLType3Dev *ct3d)
 {
     CXLComponentState *cxl_cstate = &ct3d->cxl_cstate;
@@ -310,11 +295,17 @@  static void pc_dimm_md_fill_device_info(const MemoryDeviceState *md,
     info->type = MEMORY_DEVICE_INFO_KIND_CXL;
 }
 
+static uint64_t get_lsa_size(CXLType3Dev *ct3d)
+{
+    return 0;
+}
+
 static void ct3_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
     MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(oc);
+    CXLType3Class *cvc = CXL_TYPE3_DEV_CLASS(oc);
 
     pc->realize = ct3_realize;
     pc->class_id = PCI_CLASS_STORAGE_EXPRESS;
@@ -332,11 +323,14 @@  static void ct3_class_init(ObjectClass *oc, void *data)
     mdc->fill_device_info = pc_dimm_md_fill_device_info;
     mdc->get_plugged_size = memory_device_get_region_size;
     mdc->set_addr = cxl_md_set_addr;
+
+    cvc->get_lsa_size = get_lsa_size;
 }
 
 static const TypeInfo ct3d_info = {
     .name = TYPE_CXL_TYPE3_DEV,
     .parent = TYPE_PCI_DEVICE,
+    .class_size = sizeof(struct CXLType3Class),
     .class_init = ct3_class_init,
     .instance_size = sizeof(CXLType3Dev),
     .instance_init = ct3_instance_init,
diff --git a/include/hw/cxl/cxl.h b/include/hw/cxl/cxl.h
index 809ed7de60..c7ca42930f 100644
--- a/include/hw/cxl/cxl.h
+++ b/include/hw/cxl/cxl.h
@@ -23,4 +23,3 @@ 
 #define CXL_WINDOW_MAX 10
 
 #endif
-
diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h
index ca5328a581..a79a0f106c 100644
--- a/include/hw/cxl/cxl_device.h
+++ b/include/hw/cxl/cxl_device.h
@@ -219,4 +219,28 @@  REG32(CXL_MEM_DEV_STS, 0)
     FIELD(CXL_MEM_DEV_STS, MBOX_READY, 4, 1)
     FIELD(CXL_MEM_DEV_STS, RESET_NEEDED, 5, 3)
 
+typedef struct cxl_type3_dev {
+    /* Private */
+    PCIDevice parent_obj;
+
+    /* Properties */
+    uint64_t size;
+    HostMemoryBackend *hostmem;
+    HostMemoryBackend *lsa;
+
+    /* State */
+    CXLComponentState cxl_cstate;
+    CXLDeviceState cxl_dstate;
+} CXLType3Dev;
+
+#define CT3(obj) OBJECT_CHECK(CXLType3Dev, (obj), TYPE_CXL_TYPE3_DEV)
+
+struct CXLType3Class {
+    /* Private */
+    PCIDeviceClass parent_class;
+
+    /* public */
+    uint64_t (*get_lsa_size)(CXLType3Dev *ct3d);
+};
+
 #endif