[PATCH v4 04/10] hw/cxl: Add CXL_CAPACITY_MULTIPLIER definition

Jonathan Cameron via posted 10 patches 1 year, 4 months ago
[PATCH v4 04/10] hw/cxl: Add CXL_CAPACITY_MULTIPLIER definition
Posted by Jonathan Cameron via 1 year, 4 months ago
From: Gregory Price <gourry.memverge@gmail.com>

Remove usage of magic numbers when accessing capacity fields and replace
with CXL_CAPACITY_MULTIPLIER, matching the kernel definition.

Signed-off-by: Gregory Price <gregory.price@memverge.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

---
v2:
Change to 256 * MiB and include qemu/units.h (Philippe Mathieu-Daudé)
---
 hw/cxl/cxl-mailbox-utils.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
index bc1bb18844..3f67b665f5 100644
--- a/hw/cxl/cxl-mailbox-utils.c
+++ b/hw/cxl/cxl-mailbox-utils.c
@@ -12,8 +12,11 @@
 #include "hw/pci/pci.h"
 #include "qemu/cutils.h"
 #include "qemu/log.h"
+#include "qemu/units.h"
 #include "qemu/uuid.h"
 
+#define CXL_CAPACITY_MULTIPLIER   (256 * MiB)
+
 /*
  * How to add a new command, example. The command set FOO, with cmd BAR.
  *  1. Add the command set and cmd to the enum.
@@ -138,7 +141,7 @@ static ret_code cmd_firmware_update_get_info(struct cxl_cmd *cmd,
     } QEMU_PACKED *fw_info;
     QEMU_BUILD_BUG_ON(sizeof(*fw_info) != 0x50);
 
-    if (cxl_dstate->pmem_size < (256 << 20)) {
+    if (cxl_dstate->pmem_size < CXL_CAPACITY_MULTIPLIER) {
         return CXL_MBOX_INTERNAL_ERROR;
     }
 
@@ -283,7 +286,7 @@ static ret_code cmd_identify_memory_device(struct cxl_cmd *cmd,
     CXLType3Class *cvc = CXL_TYPE3_GET_CLASS(ct3d);
     uint64_t size = cxl_dstate->pmem_size;
 
-    if (!QEMU_IS_ALIGNED(size, 256 << 20)) {
+    if (!QEMU_IS_ALIGNED(size, CXL_CAPACITY_MULTIPLIER)) {
         return CXL_MBOX_INTERNAL_ERROR;
     }
 
@@ -293,8 +296,8 @@ static ret_code cmd_identify_memory_device(struct cxl_cmd *cmd,
     /* PMEM only */
     snprintf(id->fw_revision, 0x10, "BWFW VERSION %02d", 0);
 
-    id->total_capacity = size / (256 << 20);
-    id->persistent_capacity = size / (256 << 20);
+    id->total_capacity = size / CXL_CAPACITY_MULTIPLIER;
+    id->persistent_capacity = size / CXL_CAPACITY_MULTIPLIER;
     id->lsa_size = cvc->get_lsa_size(ct3d);
 
     *len = sizeof(*id);
@@ -314,14 +317,14 @@ static ret_code cmd_ccls_get_partition_info(struct cxl_cmd *cmd,
     QEMU_BUILD_BUG_ON(sizeof(*part_info) != 0x20);
     uint64_t size = cxl_dstate->pmem_size;
 
-    if (!QEMU_IS_ALIGNED(size, 256 << 20)) {
+    if (!QEMU_IS_ALIGNED(size, CXL_CAPACITY_MULTIPLIER)) {
         return CXL_MBOX_INTERNAL_ERROR;
     }
 
     /* PMEM only */
     part_info->active_vmem = 0;
     part_info->next_vmem = 0;
-    part_info->active_pmem = size / (256 << 20);
+    part_info->active_pmem = size / CXL_CAPACITY_MULTIPLIER;
     part_info->next_pmem = 0;
 
     *len = sizeof(*part_info);
-- 
2.37.2


Re: [PATCH v4 04/10] hw/cxl: Add CXL_CAPACITY_MULTIPLIER definition
Posted by Fan Ni 1 year, 3 months ago
On Mon, Feb 06, 2023 at 05:28:10PM +0000, Jonathan Cameron wrote:
> From: Gregory Price <gourry.memverge@gmail.com>
> 
> Remove usage of magic numbers when accessing capacity fields and replace
> with CXL_CAPACITY_MULTIPLIER, matching the kernel definition.
> 
> Signed-off-by: Gregory Price <gregory.price@memverge.com>
> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> 

Reviewed-by: Fan Ni <fan.ni@samsung.com>

> ---
> v2:
> Change to 256 * MiB and include qemu/units.h (Philippe Mathieu-Daudé)
> ---
>  hw/cxl/cxl-mailbox-utils.c | 15 +++++++++------
>  1 file changed, 9 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c
> index bc1bb18844..3f67b665f5 100644
> --- a/hw/cxl/cxl-mailbox-utils.c
> +++ b/hw/cxl/cxl-mailbox-utils.c
> @@ -12,8 +12,11 @@
>  #include "hw/pci/pci.h"
>  #include "qemu/cutils.h"
>  #include "qemu/log.h"
> +#include "qemu/units.h"
>  #include "qemu/uuid.h"
>  
> +#define CXL_CAPACITY_MULTIPLIER   (256 * MiB)
> +
>  /*
>   * How to add a new command, example. The command set FOO, with cmd BAR.
>   *  1. Add the command set and cmd to the enum.
> @@ -138,7 +141,7 @@ static ret_code cmd_firmware_update_get_info(struct cxl_cmd *cmd,
>      } QEMU_PACKED *fw_info;
>      QEMU_BUILD_BUG_ON(sizeof(*fw_info) != 0x50);
>  
> -    if (cxl_dstate->pmem_size < (256 << 20)) {
> +    if (cxl_dstate->pmem_size < CXL_CAPACITY_MULTIPLIER) {
>          return CXL_MBOX_INTERNAL_ERROR;
>      }
>  
> @@ -283,7 +286,7 @@ static ret_code cmd_identify_memory_device(struct cxl_cmd *cmd,
>      CXLType3Class *cvc = CXL_TYPE3_GET_CLASS(ct3d);
>      uint64_t size = cxl_dstate->pmem_size;
>  
> -    if (!QEMU_IS_ALIGNED(size, 256 << 20)) {
> +    if (!QEMU_IS_ALIGNED(size, CXL_CAPACITY_MULTIPLIER)) {
>          return CXL_MBOX_INTERNAL_ERROR;
>      }
>  
> @@ -293,8 +296,8 @@ static ret_code cmd_identify_memory_device(struct cxl_cmd *cmd,
>      /* PMEM only */
>      snprintf(id->fw_revision, 0x10, "BWFW VERSION %02d", 0);
>  
> -    id->total_capacity = size / (256 << 20);
> -    id->persistent_capacity = size / (256 << 20);
> +    id->total_capacity = size / CXL_CAPACITY_MULTIPLIER;
> +    id->persistent_capacity = size / CXL_CAPACITY_MULTIPLIER;
>      id->lsa_size = cvc->get_lsa_size(ct3d);
>  
>      *len = sizeof(*id);
> @@ -314,14 +317,14 @@ static ret_code cmd_ccls_get_partition_info(struct cxl_cmd *cmd,
>      QEMU_BUILD_BUG_ON(sizeof(*part_info) != 0x20);
>      uint64_t size = cxl_dstate->pmem_size;
>  
> -    if (!QEMU_IS_ALIGNED(size, 256 << 20)) {
> +    if (!QEMU_IS_ALIGNED(size, CXL_CAPACITY_MULTIPLIER)) {
>          return CXL_MBOX_INTERNAL_ERROR;
>      }
>  
>      /* PMEM only */
>      part_info->active_vmem = 0;
>      part_info->next_vmem = 0;
> -    part_info->active_pmem = size / (256 << 20);
> +    part_info->active_pmem = size / CXL_CAPACITY_MULTIPLIER;
>      part_info->next_pmem = 0;
>  
>      *len = sizeof(*part_info);
> -- 
> 2.37.2
> 
>