diff mbox series

[2/6] soc: qcom: llcc: Refactor llcc driver to support multiple configuration

Message ID 20230810061140.15608-3-quic_kbajaj@quicinc.com (mailing list archive)
State Superseded
Headers show
Series soc: qcom: llcc: Add support for QDU1000/QRU1000 | expand

Commit Message

Komal Bajaj Aug. 10, 2023, 6:11 a.m. UTC 
Refactor driver to support multiple configuration for llcc on a target.

Signed-off-by: Komal Bajaj <quic_kbajaj@quicinc.com>
---
 drivers/soc/qcom/llcc-qcom.c | 269 ++++++++++++++++++++++++-----------
 1 file changed, 183 insertions(+), 86 deletions(-)

--
2.41.0

Comments

Bryan O'Donoghue Aug. 10, 2023, 12:22 p.m. UTC | #1 
On 10/08/2023 07:11, Komal Bajaj wrote:
> +	if (!cfgs || cfgs->num_config != DEF_NUM_CFG) {
> +		ret = -EINVAL;
> +		goto err;
> +	}
> +	cfg = &cfgs->llcc_config[DEF_NUM_CFG - 1];

This is a bit of a redundant check.

You add in the check for num_config != 1, then deref llc_config[0] but 
in patch #4 you get an index and check that index against num_config

I'm not seeing how at this point in your series, how num_config could be 
anything other than 1.

I'd do away with the DEF_NUM_CFG define in this code/series completely.

num_config should encode all the necessary detail we need, DEF_NUM_CFG 
just adds noise.

---
bod
Mukesh Ojha Aug. 10, 2023, 3:04 p.m. UTC | #2 
On 8/10/2023 5:52 PM, Bryan O'Donoghue wrote:
> On 10/08/2023 07:11, Komal Bajaj wrote:
>> +    if (!cfgs || cfgs->num_config != DEF_NUM_CFG) {
>> +        ret = -EINVAL;
>> +        goto err;
>> +    }
>> +    cfg = &cfgs->llcc_config[DEF_NUM_CFG - 1];
> 
> This is a bit of a redundant check.
> 
> You add in the check for num_config != 1, then deref llc_config[0] but 
> in patch #4 you get an index and check that index against num_config

I would take this blame on me to suggest this..,but i was trying to
avoid the hard-coding initially done for [1], now, num_config[2]
converted to ARRAY_SIZE(), i find no harm in checking
cfgs->num_config >  DEF_NUM_CFG
since, anyways it will move to different function in #4.

[1]
https://lore.kernel.org/lkml/39b4bafd-410f-cae8-13ae-e18d751b51a2@quicinc.com/

[2]
.num_cfgs	= 1,

-Mukesh
> 
> I'm not seeing how at this point in your series, how num_config could be 
> anything other than 1.
> 
> I'd do away with the DEF_NUM_CFG define in this code/series completely.
> 
> num_config should encode all the necessary detail we need, DEF_NUM_CFG 
> just adds noise.
> 
> ---
> bod
Komal Bajaj Aug. 24, 2023, 8:56 a.m. UTC | #3 
On 8/10/2023 5:52 PM, Bryan O'Donoghue wrote:
> On 10/08/2023 07:11, Komal Bajaj wrote:
>> +    if (!cfgs || cfgs->num_config != DEF_NUM_CFG) {
>> +        ret = -EINVAL;
>> +        goto err;
>> +    }
>> +    cfg = &cfgs->llcc_config[DEF_NUM_CFG - 1];
>
> This is a bit of a redundant check.
>
> You add in the check for num_config != 1, then deref llc_config[0] but 
> in patch #4 you get an index and check that index against num_config

Hi Bryan, Thanks for reviewing the patch.
Correct, in patch#4, index is checked against num_config, but the 
condition also checks for equality case.
For ex. in patch#6, num_config is 4, so index can vary from 0-3.

>
> I'm not seeing how at this point in your series, how num_config could 
> be anything other than 1.
>
> I'd do away with the DEF_NUM_CFG define in this code/series completely.
>
> num_config should encode all the necessary detail we need, DEF_NUM_CFG 
> just adds noise.

Got your point, will remove the macro DEF_NUM_CFG from the series.

Thanks
Komal

>
> ---
> bod
diff mbox series

Patch

diff --git a/drivers/soc/qcom/llcc-qcom.c b/drivers/soc/qcom/llcc-qcom.c
index 67c19ed2219a..76e8083d053d 100644
--- a/drivers/soc/qcom/llcc-qcom.c
+++ b/drivers/soc/qcom/llcc-qcom.c
@@ -66,6 +66,8 @@ 
 #define LLCC_VERSION_2_1_0_0          0x02010000
 #define LLCC_VERSION_4_1_0_0          0x04010000

+#define DEF_NUM_CFG                   1
+
 /**
  * struct llcc_slice_config - Data associated with the llcc slice
  * @usecase_id: Unique id for the client's use case
@@ -127,6 +129,11 @@  struct qcom_llcc_config {
 	bool no_edac;
 };

+struct qcom_sct_config {
+	const struct qcom_llcc_config *llcc_config;
+	int num_config;
+};
+
 enum llcc_reg_offset {
 	LLCC_COMMON_HW_INFO,
 	LLCC_COMMON_STATUS0,
@@ -423,101 +430,185 @@  static const u32 llcc_v2_1_reg_offset[] = {
 	[LLCC_COMMON_STATUS0]	= 0x0003400c,
 };

-static const struct qcom_llcc_config sc7180_cfg = {
-	.sct_data	= sc7180_data,
-	.size		= ARRAY_SIZE(sc7180_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_llcc_config sc7180_cfg[] = {
+	{
+		.sct_data	= sc7180_data,
+		.size		= ARRAY_SIZE(sc7180_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
 };

-static const struct qcom_llcc_config sc7280_cfg = {
-	.sct_data	= sc7280_data,
-	.size		= ARRAY_SIZE(sc7280_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_llcc_config sc7280_cfg[] = {
+	{
+		.sct_data	= sc7280_data,
+		.size		= ARRAY_SIZE(sc7280_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
 };

-static const struct qcom_llcc_config sc8180x_cfg = {
-	.sct_data	= sc8180x_data,
-	.size		= ARRAY_SIZE(sc8180x_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_llcc_config sc8180x_cfg[] = {
+	{
+		.sct_data	= sc8180x_data,
+		.size		= ARRAY_SIZE(sc8180x_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
 };

-static const struct qcom_llcc_config sc8280xp_cfg = {
-	.sct_data	= sc8280xp_data,
-	.size		= ARRAY_SIZE(sc8280xp_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_llcc_config sc8280xp_cfg[] = {
+	{
+		.sct_data	= sc8280xp_data,
+		.size		= ARRAY_SIZE(sc8280xp_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
 };

-static const struct qcom_llcc_config sdm845_cfg = {
-	.sct_data	= sdm845_data,
-	.size		= ARRAY_SIZE(sdm845_data),
-	.need_llcc_cfg	= false,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
-	.no_edac	= true,
+static const struct qcom_llcc_config sdm845_cfg[] = {
+	{
+		.sct_data	= sdm845_data,
+		.size		= ARRAY_SIZE(sdm845_data),
+		.need_llcc_cfg	= false,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+		.no_edac	= true,
+	},
 };

-static const struct qcom_llcc_config sm6350_cfg = {
-	.sct_data	= sm6350_data,
-	.size		= ARRAY_SIZE(sm6350_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_llcc_config sm6350_cfg[] = {
+	{
+		.sct_data	= sm6350_data,
+		.size		= ARRAY_SIZE(sm6350_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
 };

-static const struct qcom_llcc_config sm7150_cfg = {
-	.sct_data       = sm7150_data,
-	.size           = ARRAY_SIZE(sm7150_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_llcc_config sm7150_cfg[] = {
+	{
+		.sct_data       = sm7150_data,
+		.size           = ARRAY_SIZE(sm7150_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
 };

-static const struct qcom_llcc_config sm8150_cfg = {
-	.sct_data       = sm8150_data,
-	.size           = ARRAY_SIZE(sm8150_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_llcc_config sm8150_cfg[] = {
+	{
+		.sct_data       = sm8150_data,
+		.size           = ARRAY_SIZE(sm8150_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
 };

-static const struct qcom_llcc_config sm8250_cfg = {
-	.sct_data       = sm8250_data,
-	.size           = ARRAY_SIZE(sm8250_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_llcc_config sm8250_cfg[] = {
+	{
+		.sct_data       = sm8250_data,
+		.size           = ARRAY_SIZE(sm8250_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
+};
+
+static const struct qcom_llcc_config sm8350_cfg[] = {
+	{
+		.sct_data       = sm8350_data,
+		.size           = ARRAY_SIZE(sm8350_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v1_reg_offset,
+		.edac_reg_offset = &llcc_v1_edac_reg_offset,
+	},
+};
+
+static const struct qcom_llcc_config sm8450_cfg[] = {
+	{
+		.sct_data       = sm8450_data,
+		.size           = ARRAY_SIZE(sm8450_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v2_1_reg_offset,
+		.edac_reg_offset = &llcc_v2_1_edac_reg_offset,
+	},
+};
+
+static const struct qcom_llcc_config sm8550_cfg[] = {
+	{
+		.sct_data       = sm8550_data,
+		.size           = ARRAY_SIZE(sm8550_data),
+		.need_llcc_cfg	= true,
+		.reg_offset	= llcc_v2_1_reg_offset,
+		.edac_reg_offset = &llcc_v2_1_edac_reg_offset,
+	},
 };

-static const struct qcom_llcc_config sm8350_cfg = {
-	.sct_data       = sm8350_data,
-	.size           = ARRAY_SIZE(sm8350_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v1_reg_offset,
-	.edac_reg_offset = &llcc_v1_edac_reg_offset,
+static const struct qcom_sct_config sc7180_cfgs = {
+	.llcc_config	= sc7180_cfg,
+	.num_config	= ARRAY_SIZE(sc7180_cfg),
 };

-static const struct qcom_llcc_config sm8450_cfg = {
-	.sct_data       = sm8450_data,
-	.size           = ARRAY_SIZE(sm8450_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v2_1_reg_offset,
-	.edac_reg_offset = &llcc_v2_1_edac_reg_offset,
+static const struct qcom_sct_config sc7280_cfgs = {
+	.llcc_config	= sc7280_cfg,
+	.num_config	= ARRAY_SIZE(sc7280_cfg),
 };

-static const struct qcom_llcc_config sm8550_cfg = {
-	.sct_data       = sm8550_data,
-	.size           = ARRAY_SIZE(sm8550_data),
-	.need_llcc_cfg	= true,
-	.reg_offset	= llcc_v2_1_reg_offset,
-	.edac_reg_offset = &llcc_v2_1_edac_reg_offset,
+static const struct qcom_sct_config sc8180x_cfgs = {
+	.llcc_config	= sc8180x_cfg,
+	.num_config	= ARRAY_SIZE(sc8180x_cfg),
+};
+
+static const struct qcom_sct_config sc8280xp_cfgs = {
+	.llcc_config	= sc8280xp_cfg,
+	.num_config	= ARRAY_SIZE(sc8280xp_cfg),
+};
+
+static const struct qcom_sct_config sdm845_cfgs = {
+	.llcc_config	= sdm845_cfg,
+	.num_config	= ARRAY_SIZE(sdm845_cfg),
+};
+
+static const struct qcom_sct_config sm6350_cfgs = {
+	.llcc_config	= sm6350_cfg,
+	.num_config	= ARRAY_SIZE(sm6350_cfg),
+};
+
+static const struct qcom_sct_config sm7150_cfgs = {
+	.llcc_config	= sm7150_cfg,
+	.num_config	= ARRAY_SIZE(sm7150_cfg),
+};
+
+static const struct qcom_sct_config sm8150_cfgs = {
+	.llcc_config	= sm8150_cfg,
+	.num_config	= ARRAY_SIZE(sm8150_cfg),
+};
+
+static const struct qcom_sct_config sm8250_cfgs = {
+	.llcc_config	= sm8250_cfg,
+	.num_config	= ARRAY_SIZE(sm8250_cfg),
+};
+
+static const struct qcom_sct_config sm8350_cfgs = {
+	.llcc_config	= sm8350_cfg,
+	.num_config	= ARRAY_SIZE(sm8350_cfg),
+};
+
+static const struct qcom_sct_config sm8450_cfgs = {
+	.llcc_config	= sm8450_cfg,
+	.num_config	= ARRAY_SIZE(sm8450_cfg),
+};
+
+static const struct qcom_sct_config sm8550_cfgs = {
+	.llcc_config	= sm8550_cfg,
+	.num_config	= ARRAY_SIZE(sm8550_cfg),
 };

 static struct llcc_drv_data *drv_data = (void *) -EPROBE_DEFER;
@@ -939,6 +1030,7 @@  static int qcom_llcc_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	int ret, i;
 	struct platform_device *llcc_edac;
+	const struct qcom_sct_config *cfgs;
 	const struct qcom_llcc_config *cfg;
 	const struct llcc_slice_config *llcc_cfg;
 	u32 sz;
@@ -958,7 +1050,12 @@  static int qcom_llcc_probe(struct platform_device *pdev)
 		goto err;
 	}

-	cfg = of_device_get_match_data(&pdev->dev);
+	cfgs = of_device_get_match_data(&pdev->dev);
+	if (!cfgs || cfgs->num_config != DEF_NUM_CFG) {
+		ret = -EINVAL;
+		goto err;
+	}
+	cfg = &cfgs->llcc_config[DEF_NUM_CFG - 1];

 	ret = regmap_read(regmap, cfg->reg_offset[LLCC_COMMON_STATUS0], &num_banks);
 	if (ret)
@@ -1051,18 +1148,18 @@  static int qcom_llcc_probe(struct platform_device *pdev)
 }

 static const struct of_device_id qcom_llcc_of_match[] = {
-	{ .compatible = "qcom,sc7180-llcc", .data = &sc7180_cfg },
-	{ .compatible = "qcom,sc7280-llcc", .data = &sc7280_cfg },
-	{ .compatible = "qcom,sc8180x-llcc", .data = &sc8180x_cfg },
-	{ .compatible = "qcom,sc8280xp-llcc", .data = &sc8280xp_cfg },
-	{ .compatible = "qcom,sdm845-llcc", .data = &sdm845_cfg },
-	{ .compatible = "qcom,sm6350-llcc", .data = &sm6350_cfg },
-	{ .compatible = "qcom,sm7150-llcc", .data = &sm7150_cfg },
-	{ .compatible = "qcom,sm8150-llcc", .data = &sm8150_cfg },
-	{ .compatible = "qcom,sm8250-llcc", .data = &sm8250_cfg },
-	{ .compatible = "qcom,sm8350-llcc", .data = &sm8350_cfg },
-	{ .compatible = "qcom,sm8450-llcc", .data = &sm8450_cfg },
-	{ .compatible = "qcom,sm8550-llcc", .data = &sm8550_cfg },
+	{ .compatible = "qcom,sc7180-llcc", .data = &sc7180_cfgs },
+	{ .compatible = "qcom,sc7280-llcc", .data = &sc7280_cfgs },
+	{ .compatible = "qcom,sc8180x-llcc", .data = &sc8180x_cfgs },
+	{ .compatible = "qcom,sc8280xp-llcc", .data = &sc8280xp_cfgs },
+	{ .compatible = "qcom,sdm845-llcc", .data = &sdm845_cfgs },
+	{ .compatible = "qcom,sm6350-llcc", .data = &sm6350_cfgs },
+	{ .compatible = "qcom,sm7150-llcc", .data = &sm7150_cfgs },
+	{ .compatible = "qcom,sm8150-llcc", .data = &sm8150_cfgs },
+	{ .compatible = "qcom,sm8250-llcc", .data = &sm8250_cfgs },
+	{ .compatible = "qcom,sm8350-llcc", .data = &sm8350_cfgs },
+	{ .compatible = "qcom,sm8450-llcc", .data = &sm8450_cfgs },
+	{ .compatible = "qcom,sm8550-llcc", .data = &sm8550_cfgs },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, qcom_llcc_of_match);