soc: qcom: llcc: Pass LLCC version based register offsets to EDAC driver

The LLCC EDAC register offsets varies between each SoCs. Until now, the
EDAC driver used the hardcoded register offsets. But this caused crash
on SM8450 SoC where the register offsets has been changed.

So to avoid this crash and also to make it easy to accommodate changes for
new SoCs, let's pass the LLCC version specific register offsets to the
EDAC driver.

Currently, two set of offsets are used. One is starting from LLCC version
v1.0.0 used by all SoCs other than SM8450. For SM8450, LLCC version
starting from v2.1.0 is used.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Sai Prakash Ranjan <quic_saipraka@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220825043859.30066-3-manivannan.sadhasivam@linaro.org

drivers/soc/qcom/llcc-qcom.c

@@ -104,6 +104,7 @@ struct qcom_llcc_config {
 	int size;
 	bool need_llcc_cfg;
 	const u32 *reg_offset;
+	const struct llcc_edac_reg_offset *edac_reg_offset;
 };
 
 enum llcc_reg_offset {
@@ -296,6 +297,60 @@ static const struct llcc_slice_config sm8450_data[] =  {
 	{LLCC_AENPU,     8, 2048, 1, 1, 0xFFFF, 0x0,   0, 0, 0, 0, 0, 0, 0 },
 };
 
+static const struct llcc_edac_reg_offset llcc_v1_edac_reg_offset = {
+	.trp_ecc_error_status0 = 0x20344,
+	.trp_ecc_error_status1 = 0x20348,
+	.trp_ecc_sb_err_syn0 = 0x2304c,
+	.trp_ecc_db_err_syn0 = 0x20370,
+	.trp_ecc_error_cntr_clear = 0x20440,
+	.trp_interrupt_0_status = 0x20480,
+	.trp_interrupt_0_clear = 0x20484,
+	.trp_interrupt_0_enable = 0x20488,
+
+	/* LLCC Common registers */
+	.cmn_status0 = 0x3000c,
+	.cmn_interrupt_0_enable = 0x3001c,
+	.cmn_interrupt_2_enable = 0x3003c,
+
+	/* LLCC DRP registers */
+	.drp_ecc_error_cfg = 0x40000,
+	.drp_ecc_error_cntr_clear = 0x40004,
+	.drp_interrupt_status = 0x41000,
+	.drp_interrupt_clear = 0x41008,
+	.drp_interrupt_enable = 0x4100c,
+	.drp_ecc_error_status0 = 0x42044,
+	.drp_ecc_error_status1 = 0x42048,
+	.drp_ecc_sb_err_syn0 = 0x4204c,
+	.drp_ecc_db_err_syn0 = 0x42070,
+};
+
+static const struct llcc_edac_reg_offset llcc_v2_1_edac_reg_offset = {
+	.trp_ecc_error_status0 = 0x20344,
+	.trp_ecc_error_status1 = 0x20348,
+	.trp_ecc_sb_err_syn0 = 0x2034c,
+	.trp_ecc_db_err_syn0 = 0x20370,
+	.trp_ecc_error_cntr_clear = 0x20440,
+	.trp_interrupt_0_status = 0x20480,
+	.trp_interrupt_0_clear = 0x20484,
+	.trp_interrupt_0_enable = 0x20488,
+
+	/* LLCC Common registers */
+	.cmn_status0 = 0x3400c,
+	.cmn_interrupt_0_enable = 0x3401c,
+	.cmn_interrupt_2_enable = 0x3403c,
+
+	/* LLCC DRP registers */
+	.drp_ecc_error_cfg = 0x50000,
+	.drp_ecc_error_cntr_clear = 0x50004,
+	.drp_interrupt_status = 0x50020,
+	.drp_interrupt_clear = 0x50028,
+	.drp_interrupt_enable = 0x5002c,
+	.drp_ecc_error_status0 = 0x520f4,
+	.drp_ecc_error_status1 = 0x520f8,
+	.drp_ecc_sb_err_syn0 = 0x520fc,
+	.drp_ecc_db_err_syn0 = 0x52120,
+};
+
 /* LLCC register offset starting from v1.0.0 */
 static const u32 llcc_v1_reg_offset[] = {
 	[LLCC_COMMON_HW_INFO]	= 0x00030000,
@@ -313,6 +368,7 @@ static const struct qcom_llcc_config sc7180_cfg = {
 	.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 = {
@@ -320,6 +376,7 @@ static const struct qcom_llcc_config sc7280_cfg = {
 	.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 = {
@@ -327,6 +384,7 @@ static const struct qcom_llcc_config sc8180x_cfg = {
 	.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 = {
@@ -334,6 +392,7 @@ static const struct qcom_llcc_config sc8280xp_cfg = {
 	.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 = {
@@ -341,6 +400,7 @@ static const struct qcom_llcc_config sdm845_cfg = {
 	.size		= ARRAY_SIZE(sdm845_data),
 	.need_llcc_cfg	= false,
 	.reg_offset	= llcc_v1_reg_offset,
+	.edac_reg_offset = &llcc_v1_edac_reg_offset,
 };
 
 static const struct qcom_llcc_config sm6350_cfg = {
@@ -348,6 +408,7 @@ static const struct qcom_llcc_config sm6350_cfg = {
 	.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 sm8150_cfg = {
@@ -355,6 +416,7 @@ static const struct qcom_llcc_config sm8150_cfg = {
 	.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 = {
@@ -362,6 +424,7 @@ static const struct qcom_llcc_config sm8250_cfg = {
 	.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 = {
@@ -369,6 +432,7 @@ static const struct qcom_llcc_config sm8350_cfg = {
 	.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 = {
@@ -376,6 +440,7 @@ static const struct qcom_llcc_config sm8450_cfg = {
 	.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 struct llcc_drv_data *drv_data = (void *) -EPROBE_DEFER;
@@ -776,6 +841,7 @@ static int qcom_llcc_probe(struct platform_device *pdev)
 
 	drv_data->cfg = llcc_cfg;
 	drv_data->cfg_size = sz;
+	drv_data->edac_reg_offset = cfg->edac_reg_offset;
 	mutex_init(&drv_data->lock);
 	platform_set_drvdata(pdev, drv_data);
 

include/linux/soc/qcom/llcc-qcom.h

@@ -78,11 +78,40 @@ struct llcc_edac_reg_data {
 	u8  ways_shift;
 };
 
+struct llcc_edac_reg_offset {
+	/* LLCC TRP registers */
+	u32 trp_ecc_error_status0;
+	u32 trp_ecc_error_status1;
+	u32 trp_ecc_sb_err_syn0;
+	u32 trp_ecc_db_err_syn0;
+	u32 trp_ecc_error_cntr_clear;
+	u32 trp_interrupt_0_status;
+	u32 trp_interrupt_0_clear;
+	u32 trp_interrupt_0_enable;
+
+	/* LLCC Common registers */
+	u32 cmn_status0;
+	u32 cmn_interrupt_0_enable;
+	u32 cmn_interrupt_2_enable;
+
+	/* LLCC DRP registers */
+	u32 drp_ecc_error_cfg;
+	u32 drp_ecc_error_cntr_clear;
+	u32 drp_interrupt_status;
+	u32 drp_interrupt_clear;
+	u32 drp_interrupt_enable;
+	u32 drp_ecc_error_status0;
+	u32 drp_ecc_error_status1;
+	u32 drp_ecc_sb_err_syn0;
+	u32 drp_ecc_db_err_syn0;
+};
+
 /**
  * struct llcc_drv_data - Data associated with the llcc driver
  * @regmap: regmap associated with the llcc device
  * @bcast_regmap: regmap associated with llcc broadcast offset
  * @cfg: pointer to the data structure for slice configuration
+ * @edac_reg_offset: Offset of the LLCC EDAC registers
  * @lock: mutex associated with each slice
  * @cfg_size: size of the config data table
  * @max_slices: max slices as read from device tree
@@ -96,6 +125,7 @@ struct llcc_drv_data {
 	struct regmap *regmap;
 	struct regmap *bcast_regmap;
 	const struct llcc_slice_config *cfg;
+	const struct llcc_edac_reg_offset *edac_reg_offset;
 	struct mutex lock;
 	u32 cfg_size;
 	u32 max_slices;