| Message ID | e0a5115eac57ee19df10bae2e3411cbbc7943303.1663894792.git.quic_asutoshd@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add Multi Circular Queue Support | expand |
On Thu, Sep 22, 2022 at 06:05:13PM -0700, 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@quicinc.com> > Signed-off-by: Can Guo <quic_cang@quicinc.com> > Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com> > --- > drivers/ufs/core/ufs-mcq.c | 34 ++++++++++++++++++++++++++++++++++ > drivers/ufs/core/ufshcd-priv.h | 9 +++++++++ > drivers/ufs/core/ufshcd.c | 10 ++++++++-- > 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, 64 insertions(+), 2 deletions(-) > > diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c > index e5cc7ab..e52066e 100644 > --- a/drivers/ufs/core/ufs-mcq.c > +++ b/drivers/ufs/core/ufs-mcq.c > @@ -17,6 +17,8 @@ > #define UFS_MCQ_MIN_READ_QUEUES 0 > #define UFS_MCQ_MIN_POLL_QUEUES 0 > > +#define MCQ_CFG_MAC_OFFSET 8 > +#define MCQ_CFG_MAC_MASK UFS_MASK(0x1ff, MCQ_CFG_MAC_OFFSET) Define 0x1ff > #define MCQ_QCFGPTR_MASK GENMASK(7, 0) > #define MCQ_QCFGPTR_UNIT 0x200 > #define MCQ_SQATTR_OFFSET(c) \ > @@ -107,6 +109,38 @@ static const struct ufshcd_res_info_t ufshcd_res_info[RES_MAX] = { > {.name = "mcq_vs", .resource = NULL, .base = NULL}, > }; > > +/** > + * ufshcd_mcq_decide_queue_depth - decide the queue depth ufshcd_mcq_calc_queue_depth - Calculate MCQ queue depth > + * @hba - per adapter instance > + * > + * MAC - Max. Active Command of the Host Controller (HC) > + * HC wouldn't send more than this commands to the device. > + * The default MAC is 32, but the max. value may vary with > + * vendor implementation. > + * Calculates and adjusts the queue depth based on the depth > + * supported by the HC and ufs device. > + */ > +u32 ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba) > +{ > + u32 qd, val; > + int mac; > + > + mac = ufshcd_mcq_vops_get_hba_mac(hba); > + if (mac < 0) { > + val = ufshcd_readl(hba, REG_UFS_MCQ_CFG); > + mac = (val & MCQ_CFG_MAC_MASK) >> MCQ_CFG_MAC_OFFSET; > + } > + > + /* MAC is a 0 based value. */ > + mac += 1; > + /* max. value of bqueuedepth = 256, mac is host dependent */ > + qd = min_t(u32, mac, hba->dev_info.bqueuedepth); > + if (!qd) > + qd = mac; > + > + return qd; > +} > + > 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 cf6bdd8e..6d16beb 100644 > --- a/drivers/ufs/core/ufshcd-priv.h > +++ b/drivers/ufs/core/ufshcd-priv.h > @@ -51,6 +51,7 @@ 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); > +u32 ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba); > > #define SD_ASCII_STD true > #define SD_RAW false > @@ -216,6 +217,14 @@ 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) No inline > +{ > + if (hba->vops && hba->vops->get_hba_mac) > + return hba->vops->get_hba_mac(hba); > + > + return -EOPNOTSUPP; > +} > + > extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[]; > > /** > diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c > index f4bb402..a71b57e 100644 > --- a/drivers/ufs/core/ufshcd.c > +++ b/drivers/ufs/core/ufshcd.c > @@ -7759,6 +7759,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba) > /* getting Specification Version in big endian format */ > dev_info->wspecversion = desc_buf[DEVICE_DESC_PARAM_SPEC_VER] << 8 | > desc_buf[DEVICE_DESC_PARAM_SPEC_VER + 1]; > + dev_info->bqueuedepth = desc_buf[DEVICE_DESC_PARAM_Q_DPTH]; > b_ufs_feature_sup = desc_buf[DEVICE_DESC_PARAM_UFS_FEAT]; > > model_index = desc_buf[DEVICE_DESC_PARAM_PRDCT_NAME]; > @@ -8175,10 +8176,15 @@ static int ufshcd_add_lus(struct ufs_hba *hba) > static int ufshcd_config_mcq(struct ufs_hba *hba) > { > int ret; > + int old_nutrs = hba->nutrs; > > + hba->nutrs = ufshcd_mcq_decide_queue_depth(hba); > ret = ufshcd_mcq_init(hba); > - > - return ret; > + if (ret) { > + hba->nutrs = old_nutrs; > + return ret; > + } Newline > + return 0; > } > > /** > diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c > index 473fad8..643a915 100644 > --- a/drivers/ufs/host/ufs-qcom.c > +++ b/drivers/ufs/host/ufs-qcom.c > @@ -25,6 +25,7 @@ > #define UFS_QCOM_DEFAULT_DBG_PRINT_EN \ > (UFS_QCOM_DBG_PRINT_REGS_EN | UFS_QCOM_DBG_PRINT_TEST_BUS_EN) > > +#define MAX_SUPP_MAC 63 Just use a single space after #define to align with other definitions. > enum { > TSTBUS_UAWM, > TSTBUS_UARM, > @@ -1424,6 +1425,12 @@ static void ufs_qcom_config_scaling_param(struct ufs_hba *hba, > } > #endif > > +static int ufs_qcom_get_hba_mac(struct ufs_hba *hba) > +{ > + /* Default is 32, but Qualcomm HC supports upto 64 */ Hmm, then this should come from ufshcd, no? Thanks, Mani > + return MAX_SUPP_MAC; > +} > + > /* > * struct ufs_hba_qcom_vops - UFS QCOM specific variant operations > * > @@ -1447,6 +1454,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = { > .device_reset = ufs_qcom_device_reset, > .config_scaling_param = ufs_qcom_config_scaling_param, > .program_key = ufs_qcom_ice_program_key, > + .get_hba_mac = ufs_qcom_get_hba_mac, > }; > > /** > diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h > index ba2a1d8..5112418 100644 > --- a/include/ufs/ufs.h > +++ b/include/ufs/ufs.h > @@ -591,6 +591,8 @@ struct ufs_dev_info { > u8 *model; > u16 wspecversion; > u32 clk_gating_wait_us; > + /* Stores the depth of queue in UFS device */ > + u8 bqueuedepth; > > /* UFS HPB related flag */ > bool hpb_enabled; > diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h > index 54d742a..630a0eb 100644 > --- a/include/ufs/ufshcd.h > +++ b/include/ufs/ufshcd.h > @@ -293,6 +293,7 @@ struct ufs_pwr_mode_info { > * @config_scaling_param: called to configure clock scaling parameters > * @program_key: program or evict an inline encryption key > * @event_notify: called to notify important events > + * @get_hba_mac: called to get vendor specific mac value > */ > struct ufs_hba_variant_ops { > const char *name; > @@ -331,6 +332,7 @@ struct ufs_hba_variant_ops { > const union ufs_crypto_cfg_entry *cfg, int slot); > void (*event_notify)(struct ufs_hba *hba, > enum ufs_event_type evt, void *data); > + int (*get_hba_mac)(struct ufs_hba *hba); > }; > > /* clock gating state */ > diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h > index ef5c3a8..ca7db49d 100644 > --- a/include/ufs/ufshci.h > +++ b/include/ufs/ufshci.h > @@ -57,6 +57,7 @@ enum { > REG_UFS_CCAP = 0x100, > REG_UFS_CRYPTOCAP = 0x104, > > + REG_UFS_MCQ_CFG = 0x380, > UFSHCI_CRYPTO_REG_SPACE_SIZE = 0x400, > }; > > -- > 2.7.4 >
On Mon, Sep 26 2022 at 08:22 -0700, Manivannan Sadhasivam wrote: >On Thu, Sep 22, 2022 at 06:05:13PM -0700, 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@quicinc.com> >> Signed-off-by: Can Guo <quic_cang@quicinc.com> >> Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com> >> --- [...] >> >> +/** >> + * ufshcd_mcq_decide_queue_depth - decide the queue depth > >ufshcd_mcq_calc_queue_depth - Calculate MCQ queue depth > The name ufshcd_mcq_decide_queue_depth was suggested by Bart in his comments. I don't have a strong opinion on the name, if you do, plmk and I'd change it. >> + * @hba - per adapter instance [...] >> +static int ufs_qcom_get_hba_mac(struct ufs_hba *hba) >> +{ >> + /* Default is 32, but Qualcomm HC supports upto 64 */ > >Hmm, then this should come from ufshcd, no? > I'm not sure I understand this comment, please can you elaborate? >Thanks, >Mani
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index e5cc7ab..e52066e 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -17,6 +17,8 @@ #define UFS_MCQ_MIN_READ_QUEUES 0 #define UFS_MCQ_MIN_POLL_QUEUES 0 +#define MCQ_CFG_MAC_OFFSET 8 +#define MCQ_CFG_MAC_MASK UFS_MASK(0x1ff, MCQ_CFG_MAC_OFFSET) #define MCQ_QCFGPTR_MASK GENMASK(7, 0) #define MCQ_QCFGPTR_UNIT 0x200 #define MCQ_SQATTR_OFFSET(c) \ @@ -107,6 +109,38 @@ static const struct ufshcd_res_info_t ufshcd_res_info[RES_MAX] = { {.name = "mcq_vs", .resource = NULL, .base = NULL}, }; +/** + * ufshcd_mcq_decide_queue_depth - decide the queue depth + * @hba - per adapter instance + * + * MAC - Max. Active Command of the Host Controller (HC) + * HC wouldn't send more than this commands to the device. + * The default MAC is 32, but the max. value may vary with + * vendor implementation. + * Calculates and adjusts the queue depth based on the depth + * supported by the HC and ufs device. + */ +u32 ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba) +{ + u32 qd, val; + int mac; + + mac = ufshcd_mcq_vops_get_hba_mac(hba); + if (mac < 0) { + val = ufshcd_readl(hba, REG_UFS_MCQ_CFG); + mac = (val & MCQ_CFG_MAC_MASK) >> MCQ_CFG_MAC_OFFSET; + } + + /* MAC is a 0 based value. */ + mac += 1; + /* max. value of bqueuedepth = 256, mac is host dependent */ + qd = min_t(u32, mac, hba->dev_info.bqueuedepth); + if (!qd) + qd = mac; + + return qd; +} + 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 cf6bdd8e..6d16beb 100644 --- a/drivers/ufs/core/ufshcd-priv.h +++ b/drivers/ufs/core/ufshcd-priv.h @@ -51,6 +51,7 @@ 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); +u32 ufshcd_mcq_decide_queue_depth(struct ufs_hba *hba); #define SD_ASCII_STD true #define SD_RAW false @@ -216,6 +217,14 @@ 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) +{ + if (hba->vops && hba->vops->get_hba_mac) + return hba->vops->get_hba_mac(hba); + + return -EOPNOTSUPP; +} + extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[]; /** diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index f4bb402..a71b57e 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -7759,6 +7759,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba) /* getting Specification Version in big endian format */ dev_info->wspecversion = desc_buf[DEVICE_DESC_PARAM_SPEC_VER] << 8 | desc_buf[DEVICE_DESC_PARAM_SPEC_VER + 1]; + dev_info->bqueuedepth = desc_buf[DEVICE_DESC_PARAM_Q_DPTH]; b_ufs_feature_sup = desc_buf[DEVICE_DESC_PARAM_UFS_FEAT]; model_index = desc_buf[DEVICE_DESC_PARAM_PRDCT_NAME]; @@ -8175,10 +8176,15 @@ static int ufshcd_add_lus(struct ufs_hba *hba) static int ufshcd_config_mcq(struct ufs_hba *hba) { int ret; + int old_nutrs = hba->nutrs; + hba->nutrs = ufshcd_mcq_decide_queue_depth(hba); ret = ufshcd_mcq_init(hba); - - return ret; + if (ret) { + hba->nutrs = old_nutrs; + return ret; + } + return 0; } /** diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 473fad8..643a915 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -25,6 +25,7 @@ #define UFS_QCOM_DEFAULT_DBG_PRINT_EN \ (UFS_QCOM_DBG_PRINT_REGS_EN | UFS_QCOM_DBG_PRINT_TEST_BUS_EN) +#define MAX_SUPP_MAC 63 enum { TSTBUS_UAWM, TSTBUS_UARM, @@ -1424,6 +1425,12 @@ static void ufs_qcom_config_scaling_param(struct ufs_hba *hba, } #endif +static int ufs_qcom_get_hba_mac(struct ufs_hba *hba) +{ + /* Default is 32, but Qualcomm HC supports upto 64 */ + return MAX_SUPP_MAC; +} + /* * struct ufs_hba_qcom_vops - UFS QCOM specific variant operations * @@ -1447,6 +1454,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = { .device_reset = ufs_qcom_device_reset, .config_scaling_param = ufs_qcom_config_scaling_param, .program_key = ufs_qcom_ice_program_key, + .get_hba_mac = ufs_qcom_get_hba_mac, }; /** diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h index ba2a1d8..5112418 100644 --- a/include/ufs/ufs.h +++ b/include/ufs/ufs.h @@ -591,6 +591,8 @@ struct ufs_dev_info { u8 *model; u16 wspecversion; u32 clk_gating_wait_us; + /* Stores the depth of queue in UFS device */ + u8 bqueuedepth; /* UFS HPB related flag */ bool hpb_enabled; diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 54d742a..630a0eb 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -293,6 +293,7 @@ struct ufs_pwr_mode_info { * @config_scaling_param: called to configure clock scaling parameters * @program_key: program or evict an inline encryption key * @event_notify: called to notify important events + * @get_hba_mac: called to get vendor specific mac value */ struct ufs_hba_variant_ops { const char *name; @@ -331,6 +332,7 @@ struct ufs_hba_variant_ops { const union ufs_crypto_cfg_entry *cfg, int slot); void (*event_notify)(struct ufs_hba *hba, enum ufs_event_type evt, void *data); + int (*get_hba_mac)(struct ufs_hba *hba); }; /* clock gating state */ diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h index ef5c3a8..ca7db49d 100644 --- a/include/ufs/ufshci.h +++ b/include/ufs/ufshci.h @@ -57,6 +57,7 @@ enum { REG_UFS_CCAP = 0x100, REG_UFS_CRYPTOCAP = 0x104, + REG_UFS_MCQ_CFG = 0x380, UFSHCI_CRYPTO_REG_SPACE_SIZE = 0x400, };