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FROMLIST: scsi: ufs: Cache HPB Control mode on init

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We will use it later, when we'll need to differentiate between device
and host control modes.

Bug: 183467926
Bug: 170940265
Bug: 183454255

Link: https://lore.kernel.org/lkml/20210607061401.58884-2-avri.altman@wdc.com/
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Change-Id: Id1eb0408814fd9fda6815c6b19faf4ade106ba05
This commit is contained in:
Avri Altman 2020-09-02 12:32:14 +03:00 committed by Todd Kjos
parent 756ecd96f6
commit bce9649c9f
3 changed files with 9 additions and 3 deletions
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2
drivers/scsi/ufs/ufshcd.h
View File

@ -664,6 +664,7 @@ struct ufs_hba_variant_params {
* @hpb_disabled: flag to check if HPB is disabled
* @max_hpb_single_cmd: device reported bMAX_DATA_SIZE_FOR_SINGLE_CMD value
* @is_legacy: flag to check HPB 1.0
* @control_mode: either host or device
*/
struct ufshpb_dev_info {
int num_lu;
@ -673,6 +674,7 @@ struct ufshpb_dev_info {
bool hpb_disabled;
u8 max_hpb_single_cmd;
bool is_legacy;
u8 control_mode;
};
#endif

8
drivers/scsi/ufs/ufshpb.c
View File

@ -1610,6 +1610,9 @@ static void ufshpb_lu_parameter_init(struct ufs_hba *hba,
% (hpb->srgn_mem_size / HPB_ENTRY_SIZE);
hpb->pages_per_srgn = DIV_ROUND_UP(hpb->srgn_mem_size, PAGE_SIZE);
if (hpb_dev_info->control_mode == HPB_HOST_CONTROL)
hpb->is_hcm = true;
}
static int ufshpb_alloc_region_tbl(struct ufs_hba *hba, struct ufshpb_lu *hpb)
@ -2304,11 +2307,10 @@ void ufshpb_get_dev_info(struct ufs_hba *hba, u8 *desc_buf)
{
struct ufshpb_dev_info *hpb_dev_info = &hba->ufshpb_dev;
int version, ret;
u8 hpb_mode;
u32 max_hpb_single_cmd = HPB_MULTI_CHUNK_LOW;
hpb_mode = desc_buf[DEVICE_DESC_PARAM_HPB_CONTROL];
if (hpb_mode == HPB_HOST_CONTROL) {
hpb_dev_info->control_mode = desc_buf[DEVICE_DESC_PARAM_HPB_CONTROL];
if (hpb_dev_info->control_mode == HPB_HOST_CONTROL) {
dev_err(hba->dev, "%s: host control mode is not supported.\n",
__func__);
hpb_dev_info->hpb_disabled = true;

2
drivers/scsi/ufs/ufshpb.h
View File

@ -228,6 +228,8 @@ struct ufshpb_lu {
u32 entries_per_srgn_shift;
u32 pages_per_srgn;
bool is_hcm;
struct ufshpb_stats stats;
struct ufshpb_params params;