diff options
Diffstat (limited to 'hw/cxl')
| -rw-r--r-- | hw/cxl/cxl-device-utils.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/hw/cxl/cxl-device-utils.c b/hw/cxl/cxl-device-utils.c index f6c3e0f095..687759b301 100644 --- a/hw/cxl/cxl-device-utils.c +++ b/hw/cxl/cxl-device-utils.c @@ -131,6 +131,31 @@ static void mailbox_reg_write(void *opaque, hwaddr offset, uint64_t value, } } +static uint64_t mdev_reg_read(void *opaque, hwaddr offset, unsigned size) +{ + uint64_t retval = 0; + + retval = FIELD_DP64(retval, CXL_MEM_DEV_STS, MEDIA_STATUS, 1); + retval = FIELD_DP64(retval, CXL_MEM_DEV_STS, MBOX_READY, 1); + + return retval; +} + +static const MemoryRegionOps mdev_ops = { + .read = mdev_reg_read, + .write = NULL, /* memory device register is read only */ + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 8, + .unaligned = false, + }, + .impl = { + .min_access_size = 8, + .max_access_size = 8, + }, +}; + static const MemoryRegionOps mailbox_ops = { .read = mailbox_reg_read, .write = mailbox_reg_write, @@ -188,6 +213,9 @@ void cxl_device_register_block_init(Object *obj, CXLDeviceState *cxl_dstate) "device-status", CXL_DEVICE_STATUS_REGISTERS_LENGTH); memory_region_init_io(&cxl_dstate->mailbox, obj, &mailbox_ops, cxl_dstate, "mailbox", CXL_MAILBOX_REGISTERS_LENGTH); + memory_region_init_io(&cxl_dstate->memory_device, obj, &mdev_ops, + cxl_dstate, "memory device caps", + CXL_MEMORY_DEVICE_REGISTERS_LENGTH); memory_region_add_subregion(&cxl_dstate->device_registers, 0, &cxl_dstate->caps); @@ -197,6 +225,9 @@ void cxl_device_register_block_init(Object *obj, CXLDeviceState *cxl_dstate) memory_region_add_subregion(&cxl_dstate->device_registers, CXL_MAILBOX_REGISTERS_OFFSET, &cxl_dstate->mailbox); + memory_region_add_subregion(&cxl_dstate->device_registers, + CXL_MEMORY_DEVICE_REGISTERS_OFFSET, + &cxl_dstate->memory_device); } static void device_reg_init_common(CXLDeviceState *cxl_dstate) { } @@ -209,10 +240,12 @@ static void mailbox_reg_init_common(CXLDeviceState *cxl_dstate) cxl_dstate->payload_size = CXL_MAILBOX_MAX_PAYLOAD_SIZE; } +static void memdev_reg_init_common(CXLDeviceState *cxl_dstate) { } + void cxl_device_register_init_common(CXLDeviceState *cxl_dstate) { uint64_t *cap_hdrs = cxl_dstate->caps_reg_state64; - const int cap_count = 2; + const int cap_count = 3; /* CXL Device Capabilities Array Register */ ARRAY_FIELD_DP64(cap_hdrs, CXL_DEV_CAP_ARRAY, CAP_ID, 0); @@ -225,5 +258,8 @@ void cxl_device_register_init_common(CXLDeviceState *cxl_dstate) cxl_device_cap_init(cxl_dstate, MAILBOX, 2); mailbox_reg_init_common(cxl_dstate); + cxl_device_cap_init(cxl_dstate, MEMORY_DEVICE, 0x4000); + memdev_reg_init_common(cxl_dstate); + assert(cxl_initialize_mailbox(cxl_dstate) == 0); } |