On Fri, 2021-02-26 at 16:35 +0900, Daejun Park wrote:
>
>
> static void __ufshpb_evict_region(struct ufshpb_lu *hpb,
> struct ufshpb_region *rgn)
> {
> @@ -1209,6 +1579,16 @@ static void ufshpb_lu_parameter_init(struct
> ufs_hba *hba,
> u32 entries_per_rgn;
> u64 rgn_mem_size, tmp;
>
> + /* for pre_req */
> + if (hpb_dev_info->max_hpb_single_cmd)
> + hpb->pre_req_min_tr_len = hpb_dev_info-
> >max_hpb_single_cmd;
> + else
> + hpb->pre_req_min_tr_len = HPB_MULTI_CHUNK_LOW;
Here is not correct. according to Spec:
The size is calculated as ( bMAX_DATA_SIZE_FOR_HPB_SINGLE_CMD +1 )*4KB.
00h: 4KB
01h: 8KB
02h: 12KB
03h: 16KB
...
FEh: 1020KB
FFh: 1024KB
so, here if hpb_dev_info->max_hpb_single_cmd is 0x00, means 4KB, not
36KB.
> + hpb->pre_req_max_tr_len = max(HPB_MULTI_CHUNK_HIGH,
> + hpb->pre_req_min_tr_len);
> +
>
> out:
> /* All LUs are initialized */
> if (atomic_dec_and_test(&hba->ufshpb_dev.slave_conf_cnt))
> @@ -1812,8 +2307,9 @@ void ufshpb_get_geo_info(struct ufs_hba *hba,
> u8 *geo_buf)
> void ufshpb_get_dev_info(struct ufs_hba *hba, u8 *desc_buf)
> {
> struct ufshpb_dev_info *hpb_dev_info = &hba->ufshpb_dev;
> - int version;
> + int version, ret;
> u8 hpb_mode;
> + u32 max_hpb_sigle_cmd = 0;
>
> hpb_mode = desc_buf[DEVICE_DESC_PARAM_HPB_CONTROL];
> if (hpb_mode == HPB_HOST_CONTROL) {
> @@ -1824,13 +2320,27 @@ void ufshpb_get_dev_info(struct ufs_hba *hba,
> u8 *desc_buf)
> }
>
> version = get_unaligned_be16(desc_buf +
> DEVICE_DESC_PARAM_HPB_VER);
> - if (version != HPB_SUPPORT_VERSION) {
> + if ((version != HPB_SUPPORT_VERSION) &&
> + (version != HPB_SUPPORT_LEGACY_VERSION)) {
> dev_err(hba->dev, "%s: HPB %x version is not
> supported.\n",
> __func__, version);
> hpb_dev_info->hpb_disabled = true;
> return;
> }
>
> + if (version == HPB_SUPPORT_LEGACY_VERSION)
> + hpb_dev_info->is_legacy = true;
> +
> + pm_runtime_get_sync(hba->dev);
> + ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_READ_ATTR,
> + QUERY_ATTR_IDN_MAX_HPB_SINGLE_CMD, 0, 0,
> &max_hpb_sigle_cmd);
> + pm_runtime_put_sync(hba->dev);
> +
> + if (ret)
> + dev_err(hba->dev, "%s: idn: read max size of single hpb
> cmd query request failed",
> + __func__);
> + hpb_dev_info->max_hpb_single_cmd = max_hpb_sigle_cmd;
> +
Here you didn't add 1, if you read out the
QUERY_ATTR_IDN_MAX_HPB_SINGLE_CMD == 7, means device can support
maximum HPB Data size for using single HPB command is 7+1
((7+1)*4=32KB), not 7.
Bean
