| Message ID | 1705634583-17631-6-git-send-email-quic_taozha@quicinc.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v4,01/10] coresight-tpdm: Optimize the store function of tpdm simple dataset | expand |
On 1/19/2024 7:47 PM, Suzuki K Poulose wrote: > On 19/01/2024 03:22, Tao Zhang wrote: >> Read the CMB element size from the device tree. Set the register >> bit that controls the CMB element size of the corresponding port. >> >> Reviewed-by: James Clark <james.clark@arm.com> >> Signed-off-by: Tao Zhang <quic_taozha@quicinc.com> >> Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com> >> --- >> drivers/hwtracing/coresight/coresight-tpda.c | 123 +++++++++++-------- >> drivers/hwtracing/coresight/coresight-tpda.h | 6 + >> 2 files changed, 79 insertions(+), 50 deletions(-) >> >> diff --git a/drivers/hwtracing/coresight/coresight-tpda.c >> b/drivers/hwtracing/coresight/coresight-tpda.c >> index 4ac954f4bc13..987a69428c93 100644 >> --- a/drivers/hwtracing/coresight/coresight-tpda.c >> +++ b/drivers/hwtracing/coresight/coresight-tpda.c >> @@ -18,6 +18,7 @@ >> #include "coresight-priv.h" >> #include "coresight-tpda.h" >> #include "coresight-trace-id.h" >> +#include "coresight-tpdm.h" >> DEFINE_CORESIGHT_DEVLIST(tpda_devs, "tpda"); >> @@ -28,24 +29,57 @@ static bool coresight_device_is_tpdm(struct >> coresight_device *csdev) >> CORESIGHT_DEV_SUBTYPE_SOURCE_TPDM); >> } >> +static void tpdm_clear_element_size(struct coresight_device *csdev) >> +{ >> + struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); >> + >> + drvdata->dsb_esize = 0; >> + drvdata->cmb_esize = 0; >> +} >> + >> +static void tpda_set_element_size(struct tpda_drvdata *drvdata, u32 >> *val) >> +{ >> + >> + if (drvdata->dsb_esize == 64) >> + *val |= TPDA_Pn_CR_DSBSIZE; >> + else if (drvdata->dsb_esize == 32) >> + *val &= ~TPDA_Pn_CR_DSBSIZE; >> + >> + if (drvdata->cmb_esize == 64) >> + *val |= FIELD_PREP(TPDA_Pn_CR_CMBSIZE, 0x2); >> + else if (drvdata->cmb_esize == 32) >> + *val |= FIELD_PREP(TPDA_Pn_CR_CMBSIZE, 0x1); >> + else if (drvdata->cmb_esize == 8) >> + *val &= ~TPDA_Pn_CR_CMBSIZE; >> +} >> + >> /* >> - * Read the DSB element size from the TPDM device >> + * Read the element size from the TPDM device. One TPDM must have at >> least one of the >> + * element size property. >> * Returns >> - * The dsb element size read from the devicetree if available. >> - * 0 - Otherwise, with a warning once. >> + * 0 - The element size property is read >> + * Others - Cannot read the property of the element size >> */ >> -static int tpdm_read_dsb_element_size(struct coresight_device *csdev) >> +static int tpdm_read_element_size(struct tpda_drvdata *drvdata, >> + struct coresight_device *csdev) >> { >> - int rc = 0; >> - u8 size = 0; >> + int rc = -EINVAL; >> + struct tpdm_drvdata *tpdm_data = >> dev_get_drvdata(csdev->dev.parent); >> + >> + if (tpdm_has_dsb_dataset(tpdm_data)) { >> + rc = fwnode_property_read_u8(dev_fwnode(csdev->dev.parent), >> + "qcom,dsb-element-size", &drvdata->dsb_esize); >> + } >> + if (tpdm_has_cmb_dataset(tpdm_data)) { >> + rc = fwnode_property_read_u8(dev_fwnode(csdev->dev.parent), >> + "qcom,cmb-element-size", &drvdata->cmb_esize); >> + } >> - rc = fwnode_property_read_u8(dev_fwnode(csdev->dev.parent), >> - "qcom,dsb-element-size", &size); >> if (rc) >> dev_warn_once(&csdev->dev, >> - "Failed to read TPDM DSB Element size: %d\n", rc); >> + "Failed to read TPDM Element size: %d\n", rc); >> - return size; >> + return rc; >> } >> /* >> @@ -56,11 +90,12 @@ static int tpdm_read_dsb_element_size(struct >> coresight_device *csdev) >> * Parameter "inport" is used to pass in the input port number >> * of TPDA, and it is set to -1 in the recursize call. >> */ >> -static int tpda_get_element_size(struct coresight_device *csdev, >> +static int tpda_get_element_size(struct tpda_drvdata *drvdata, >> + struct coresight_device *csdev, >> int inport) >> { >> - int dsb_size = -ENOENT; >> - int i, size; >> + int rc = 0; >> + int i; >> struct coresight_device *in; >> for (i = 0; i < csdev->pdata->nr_inconns; i++) { >> @@ -69,30 +104,26 @@ static int tpda_get_element_size(struct >> coresight_device *csdev, >> continue; >> /* Ignore the paths that do not match port */ >> - if (inport > 0 && >> + if (inport >= 0 && >> csdev->pdata->in_conns[i]->dest_port != inport) >> continue; >> if (coresight_device_is_tpdm(in)) { >> - size = tpdm_read_dsb_element_size(in); >> + if ((drvdata->dsb_esize) || (drvdata->cmb_esize)) >> + return -EEXIST; >> + rc = tpdm_read_element_size(drvdata, in); >> + if (rc) >> + return rc; >> } else { >> /* Recurse down the path */ >> - size = tpda_get_element_size(in, -1); >> - } >> - >> - if (size < 0) >> - return size; >> - >> - if (dsb_size < 0) { >> - /* Found a size, save it. */ >> - dsb_size = size; >> - } else { >> - /* Found duplicate TPDMs */ >> - return -EEXIST; >> + rc = tpda_get_element_size(drvdata, in, -1); >> + if (rc) >> + return rc; >> } >> } >> - return dsb_size; >> + >> + return rc; >> } >> /* Settings pre enabling port control register */ >> @@ -109,7 +140,7 @@ static void tpda_enable_pre_port(struct >> tpda_drvdata *drvdata) >> static int tpda_enable_port(struct tpda_drvdata *drvdata, int port) >> { >> u32 val; >> - int size; >> + int rc; >> val = readl_relaxed(drvdata->base + TPDA_Pn_CR(port)); >> /* >> @@ -117,29 +148,21 @@ static int tpda_enable_port(struct tpda_drvdata >> *drvdata, int port) >> * Set the bit to 0 if the size is 32 >> * Set the bit to 1 if the size is 64 >> */ >> - size = tpda_get_element_size(drvdata->csdev, port); >> - switch (size) { >> - case 32: >> - val &= ~TPDA_Pn_CR_DSBSIZE; >> - break; >> - case 64: >> - val |= TPDA_Pn_CR_DSBSIZE; >> - break; >> - case 0: >> - return -EEXIST; >> - case -EEXIST: >> + tpdm_clear_element_size(drvdata->csdev); >> + rc = tpda_get_element_size(drvdata, drvdata->csdev, port); >> + if (!rc && ((drvdata->dsb_esize) || (drvdata->cmb_esize))) { > > minor nit: Drop unnecessary () around the drvdata member access. > > if (!rc && (drvdata->dsb_esize || drvdata->cmb_esize)) Sure, I will update in the next patch series. > >> + tpda_set_element_size(drvdata, &val); >> + /* Enable the port */ >> + val |= TPDA_Pn_CR_ENA; >> + writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port)); >> + } else if (rc == -EEXIST) >> dev_warn_once(&drvdata->csdev->dev, >> - "Detected multiple TPDMs on port %d", -EEXIST); >> - return -EEXIST; >> - default: >> - return -EINVAL; >> - } >> - >> - /* Enable the port */ >> - val |= TPDA_Pn_CR_ENA; >> - writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port)); >> + "Detected multiple TPDMs on port %d", -EEXIST); > > s/-EEXIST/port ? Sure, I will update in the next patch series. Best, Tao > > Rest looks fine to me. > > Suzuki > > _______________________________________________ > CoreSight mailing list -- coresight@lists.linaro.org > To unsubscribe send an email to coresight-leave@lists.linaro.org
diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c index 4ac954f4bc13..987a69428c93 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.c +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -18,6 +18,7 @@ #include "coresight-priv.h" #include "coresight-tpda.h" #include "coresight-trace-id.h" +#include "coresight-tpdm.h" DEFINE_CORESIGHT_DEVLIST(tpda_devs, "tpda"); @@ -28,24 +29,57 @@ static bool coresight_device_is_tpdm(struct coresight_device *csdev) CORESIGHT_DEV_SUBTYPE_SOURCE_TPDM); } +static void tpdm_clear_element_size(struct coresight_device *csdev) +{ + struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent); + + drvdata->dsb_esize = 0; + drvdata->cmb_esize = 0; +} + +static void tpda_set_element_size(struct tpda_drvdata *drvdata, u32 *val) +{ + + if (drvdata->dsb_esize == 64) + *val |= TPDA_Pn_CR_DSBSIZE; + else if (drvdata->dsb_esize == 32) + *val &= ~TPDA_Pn_CR_DSBSIZE; + + if (drvdata->cmb_esize == 64) + *val |= FIELD_PREP(TPDA_Pn_CR_CMBSIZE, 0x2); + else if (drvdata->cmb_esize == 32) + *val |= FIELD_PREP(TPDA_Pn_CR_CMBSIZE, 0x1); + else if (drvdata->cmb_esize == 8) + *val &= ~TPDA_Pn_CR_CMBSIZE; +} + /* - * Read the DSB element size from the TPDM device + * Read the element size from the TPDM device. One TPDM must have at least one of the + * element size property. * Returns - * The dsb element size read from the devicetree if available. - * 0 - Otherwise, with a warning once. + * 0 - The element size property is read + * Others - Cannot read the property of the element size */ -static int tpdm_read_dsb_element_size(struct coresight_device *csdev) +static int tpdm_read_element_size(struct tpda_drvdata *drvdata, + struct coresight_device *csdev) { - int rc = 0; - u8 size = 0; + int rc = -EINVAL; + struct tpdm_drvdata *tpdm_data = dev_get_drvdata(csdev->dev.parent); + + if (tpdm_has_dsb_dataset(tpdm_data)) { + rc = fwnode_property_read_u8(dev_fwnode(csdev->dev.parent), + "qcom,dsb-element-size", &drvdata->dsb_esize); + } + if (tpdm_has_cmb_dataset(tpdm_data)) { + rc = fwnode_property_read_u8(dev_fwnode(csdev->dev.parent), + "qcom,cmb-element-size", &drvdata->cmb_esize); + } - rc = fwnode_property_read_u8(dev_fwnode(csdev->dev.parent), - "qcom,dsb-element-size", &size); if (rc) dev_warn_once(&csdev->dev, - "Failed to read TPDM DSB Element size: %d\n", rc); + "Failed to read TPDM Element size: %d\n", rc); - return size; + return rc; } /* @@ -56,11 +90,12 @@ static int tpdm_read_dsb_element_size(struct coresight_device *csdev) * Parameter "inport" is used to pass in the input port number * of TPDA, and it is set to -1 in the recursize call. */ -static int tpda_get_element_size(struct coresight_device *csdev, +static int tpda_get_element_size(struct tpda_drvdata *drvdata, + struct coresight_device *csdev, int inport) { - int dsb_size = -ENOENT; - int i, size; + int rc = 0; + int i; struct coresight_device *in; for (i = 0; i < csdev->pdata->nr_inconns; i++) { @@ -69,30 +104,26 @@ static int tpda_get_element_size(struct coresight_device *csdev, continue; /* Ignore the paths that do not match port */ - if (inport > 0 && + if (inport >= 0 && csdev->pdata->in_conns[i]->dest_port != inport) continue; if (coresight_device_is_tpdm(in)) { - size = tpdm_read_dsb_element_size(in); + if ((drvdata->dsb_esize) || (drvdata->cmb_esize)) + return -EEXIST; + rc = tpdm_read_element_size(drvdata, in); + if (rc) + return rc; } else { /* Recurse down the path */ - size = tpda_get_element_size(in, -1); - } - - if (size < 0) - return size; - - if (dsb_size < 0) { - /* Found a size, save it. */ - dsb_size = size; - } else { - /* Found duplicate TPDMs */ - return -EEXIST; + rc = tpda_get_element_size(drvdata, in, -1); + if (rc) + return rc; } } - return dsb_size; + + return rc; } /* Settings pre enabling port control register */ @@ -109,7 +140,7 @@ static void tpda_enable_pre_port(struct tpda_drvdata *drvdata) static int tpda_enable_port(struct tpda_drvdata *drvdata, int port) { u32 val; - int size; + int rc; val = readl_relaxed(drvdata->base + TPDA_Pn_CR(port)); /* @@ -117,29 +148,21 @@ static int tpda_enable_port(struct tpda_drvdata *drvdata, int port) * Set the bit to 0 if the size is 32 * Set the bit to 1 if the size is 64 */ - size = tpda_get_element_size(drvdata->csdev, port); - switch (size) { - case 32: - val &= ~TPDA_Pn_CR_DSBSIZE; - break; - case 64: - val |= TPDA_Pn_CR_DSBSIZE; - break; - case 0: - return -EEXIST; - case -EEXIST: + tpdm_clear_element_size(drvdata->csdev); + rc = tpda_get_element_size(drvdata, drvdata->csdev, port); + if (!rc && ((drvdata->dsb_esize) || (drvdata->cmb_esize))) { + tpda_set_element_size(drvdata, &val); + /* Enable the port */ + val |= TPDA_Pn_CR_ENA; + writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port)); + } else if (rc == -EEXIST) dev_warn_once(&drvdata->csdev->dev, - "Detected multiple TPDMs on port %d", -EEXIST); - return -EEXIST; - default: - return -EINVAL; - } - - /* Enable the port */ - val |= TPDA_Pn_CR_ENA; - writel_relaxed(val, drvdata->base + TPDA_Pn_CR(port)); + "Detected multiple TPDMs on port %d", -EEXIST); + else + dev_warn_once(&drvdata->csdev->dev, + "Didn't find TPDM element size"); - return 0; + return rc; } static int __tpda_enable(struct tpda_drvdata *drvdata, int port) diff --git a/drivers/hwtracing/coresight/coresight-tpda.h b/drivers/hwtracing/coresight/coresight-tpda.h index b3b38fd41b64..29164fd9711f 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.h +++ b/drivers/hwtracing/coresight/coresight-tpda.h @@ -10,6 +10,8 @@ #define TPDA_Pn_CR(n) (0x004 + (n * 4)) /* Aggregator port enable bit */ #define TPDA_Pn_CR_ENA BIT(0) +/* Aggregator port CMB data set element size bit */ +#define TPDA_Pn_CR_CMBSIZE GENMASK(7, 6) /* Aggregator port DSB data set element size bit */ #define TPDA_Pn_CR_DSBSIZE BIT(8) @@ -25,6 +27,8 @@ * @csdev: component vitals needed by the framework. * @spinlock: lock for the drvdata value. * @enable: enable status of the component. + * @dsb_esize Record the DSB element size. + * @cmb_esize Record the CMB element size. */ struct tpda_drvdata { void __iomem *base; @@ -32,6 +36,8 @@ struct tpda_drvdata { struct coresight_device *csdev; spinlock_t spinlock; u8 atid; + u8 dsb_esize; + u8 cmb_esize; }; #endif /* _CORESIGHT_CORESIGHT_TPDA_H */