On Mon, Nov 28 2022 at 07:15 -0800, Manivannan Sadhasivam wrote:
On Tue, Nov 22, 2022 at 08:10:20PM -0800, Asutosh Das wrote:
The ufs device defines the supported queuedepth by
bqueuedepth which has a max value of 256.
The HC defines MAC (Max Active Commands) that define
the max number of commands that in flight to the ufs
device.
Calculate and configure the nutrs based on both these
values.
Co-developed-by: Can Guo <quic_cang@xxxxxxxxxxx>
Signed-off-by: Can Guo <quic_cang@xxxxxxxxxxx>
Signed-off-by: Asutosh Das <quic_asutoshd@xxxxxxxxxxx>
---
drivers/ufs/core/ufs-mcq.c | 32 ++++++++++++++++++++++++++++++++
drivers/ufs/core/ufshcd-priv.h | 9 +++++++++
drivers/ufs/core/ufshcd.c | 17 ++++++++++++++++-
drivers/ufs/host/ufs-qcom.c | 8 ++++++++
include/ufs/ufs.h | 2 ++
include/ufs/ufshcd.h | 2 ++
include/ufs/ufshci.h | 1 +
7 files changed, 70 insertions(+), 1 deletion(-)
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
index 4aaa6aa..e95f748 100644
--- a/drivers/ufs/core/ufs-mcq.c
+++ b/drivers/ufs/core/ufs-mcq.c
@@ -18,6 +18,8 @@
#define UFS_MCQ_NUM_DEV_CMD_QUEUES 1
#define UFS_MCQ_MIN_POLL_QUEUES 0
+#define MAX_DEV_CMD_ENTRIES 2
+#define MCQ_CFG_MAC_MASK GENMASK(16, 8)
#define MCQ_QCFGPTR_MASK GENMASK(7, 0)
#define MCQ_QCFGPTR_UNIT 0x200
#define MCQ_SQATTR_OFFSET(c) \
@@ -88,6 +90,36 @@ static const struct ufshcd_res_info ufs_res_info[RES_MAX] = {
{.name = "mcq_vs",},
};
[...]
Hello Mani,
Thanks for taking a look.
+ WARN_ON(!hba->dev_info.bqueuedepth);
Instead of panic, you could just print and return an error.
I'd make it WARN_ON_ONCE();
+ /*
+ * max. value of bqueuedepth = 256, mac is host dependent.
+ * It is mandatory for UFS device to define bQueueDepth if
+ * shared queuing architecture is enabled.
+ */
+ return min_t(int, mac, hba->dev_info.bqueuedepth);
+}
+
static int ufshcd_mcq_config_resource(struct ufs_hba *hba)
{
struct platform_device *pdev = to_platform_device(hba->dev);
diff --git a/drivers/ufs/core/ufshcd-priv.h b/drivers/ufs/core/ufshcd-priv.h
index 9368ba2..9f40fa5 100644
--- a/drivers/ufs/core/ufshcd-priv.h
+++ b/drivers/ufs/core/ufshcd-priv.h
@@ -62,6 +62,7 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
enum flag_idn idn, u8 index, bool *flag_res);
void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
int ufshcd_mcq_init(struct ufs_hba *hba);
+int ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba);
#define SD_ASCII_STD true
#define SD_RAW false
@@ -227,6 +228,14 @@ static inline void ufshcd_vops_config_scaling_param(struct ufs_hba *hba,
hba->vops->config_scaling_param(hba, p, data);
}
+static inline int ufshcd_mcq_vops_get_hba_mac(struct ufs_hba *hba)
Again, no inline please.
It spits out the following warning for all files that include this header, when
inline is removed:
warning: 'ufshcd_mcq_vops_get_hba_mac' defined but not used [-Wunused-function]
[...]
+#define MAX_SUPP_MAC 64
Similar definitions are part of ufs-qcom.h.
Thanks,
Mani
--
மணிவண்ணன் சதாசிவம்
