soc: qcom: Add broadcast base for Last Level Cache Controller (LLCC)

Currently, broadcast base is set to end of the LLCC banks, which may
not be correct always. As the number of banks may vary for each chipset
and the broadcast base could be at a different address as well. This info
depends on the chipset, so get the broadcast base info from the device
tree (DT). Add broadcast base in LLCC driver and use this for broadcast
writes.

Signed-off-by: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

1 files changed, 33 insertions, 22 deletions

diff --git a/drivers/soc/qcom/llcc-slice.c b/drivers/soc/qcom/llcc-slice.c
index 54063a31132f..08e3d388e153 100644
--- a/drivers/soc/qcom/llcc-slice.c
+++ b/drivers/soc/qcom/llcc-slice.c
@@ -106,22 +106,24 @@ static int llcc_update_act_ctrl(u32 sid,
 	u32 slice_status;
 	int ret;
 
-	act_ctrl_reg = drv_data->bcast_off + LLCC_TRP_ACT_CTRLn(sid);
-	status_reg = drv_data->bcast_off + LLCC_TRP_STATUSn(sid);
+	act_ctrl_reg = LLCC_TRP_ACT_CTRLn(sid);
+	status_reg = LLCC_TRP_STATUSn(sid);
 
 	/* Set the ACTIVE trigger */
 	act_ctrl_reg_val |= ACT_CTRL_ACT_TRIG;
-	ret = regmap_write(drv_data->regmap, act_ctrl_reg, act_ctrl_reg_val);
+	ret = regmap_write(drv_data->bcast_regmap, act_ctrl_reg,
+				act_ctrl_reg_val);
 	if (ret)
 		return ret;
 
 	/* Clear the ACTIVE trigger */
 	act_ctrl_reg_val &= ~ACT_CTRL_ACT_TRIG;
-	ret = regmap_write(drv_data->regmap, act_ctrl_reg, act_ctrl_reg_val);
+	ret = regmap_write(drv_data->bcast_regmap, act_ctrl_reg,
+				act_ctrl_reg_val);
 	if (ret)
 		return ret;
 
-	ret = regmap_read_poll_timeout(drv_data->regmap, status_reg,
+	ret = regmap_read_poll_timeout(drv_data->bcast_regmap, status_reg,
 				      slice_status, !(slice_status & status),
 				      0, LLCC_STATUS_READ_DELAY);
 	return ret;
@@ -226,16 +228,13 @@ static int qcom_llcc_cfg_program(struct platform_device *pdev)
 	int ret;
 	const struct llcc_slice_config *llcc_table;
 	struct llcc_slice_desc desc;
-	u32 bcast_off = drv_data->bcast_off;
 
 	sz = drv_data->cfg_size;
 	llcc_table = drv_data->cfg;
 
 	for (i = 0; i < sz; i++) {
-		attr1_cfg = bcast_off +
-				LLCC_TRP_ATTR1_CFGn(llcc_table[i].slice_id);
-		attr0_cfg = bcast_off +
-				LLCC_TRP_ATTR0_CFGn(llcc_table[i].slice_id);
+		attr1_cfg = LLCC_TRP_ATTR1_CFGn(llcc_table[i].slice_id);
+		attr0_cfg = LLCC_TRP_ATTR0_CFGn(llcc_table[i].slice_id);
 
 		attr1_val = llcc_table[i].cache_mode;
 		attr1_val |= llcc_table[i].probe_target_ways <<
@@ -260,10 +259,12 @@ static int qcom_llcc_cfg_program(struct platform_device *pdev)
 		attr0_val = llcc_table[i].res_ways & ATTR0_RES_WAYS_MASK;
 		attr0_val |= llcc_table[i].bonus_ways << ATTR0_BONUS_WAYS_SHIFT;
 
-		ret = regmap_write(drv_data->regmap, attr1_cfg, attr1_val);
+		ret = regmap_write(drv_data->bcast_regmap, attr1_cfg,
+					attr1_val);
 		if (ret)
 			return ret;
-		ret = regmap_write(drv_data->regmap, attr0_cfg, attr0_val);
+		ret = regmap_write(drv_data->bcast_regmap, attr0_cfg,
+					attr0_val);
 		if (ret)
 			return ret;
 		if (llcc_table[i].activate_on_init) {
@@ -279,24 +280,36 @@ int qcom_llcc_probe(struct platform_device *pdev,
 {
 	u32 num_banks;
 	struct device *dev = &pdev->dev;
-	struct resource *res;
-	void __iomem *base;
+	struct resource *llcc_banks_res, *llcc_bcast_res;
+	void __iomem *llcc_banks_base, *llcc_bcast_base;
 	int ret, i;
 
 	drv_data = devm_kzalloc(dev, sizeof(*drv_data), GFP_KERNEL);
 	if (!drv_data)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
+	llcc_banks_res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+							"llcc_base");
+	llcc_banks_base = devm_ioremap_resource(&pdev->dev, llcc_banks_res);
+	if (IS_ERR(llcc_banks_base))
+		return PTR_ERR(llcc_banks_base);
 
-	drv_data->regmap = devm_regmap_init_mmio(dev, base,
-					&llcc_regmap_config);
+	drv_data->regmap = devm_regmap_init_mmio(dev, llcc_banks_base,
+						&llcc_regmap_config);
 	if (IS_ERR(drv_data->regmap))
 		return PTR_ERR(drv_data->regmap);
 
+	llcc_bcast_res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+							"llcc_broadcast_base");
+	llcc_bcast_base = devm_ioremap_resource(&pdev->dev, llcc_bcast_res);
+	if (IS_ERR(llcc_bcast_base))
+		return PTR_ERR(llcc_bcast_base);
+
+	drv_data->bcast_regmap = devm_regmap_init_mmio(dev, llcc_bcast_base,
+							&llcc_regmap_config);
+	if (IS_ERR(drv_data->bcast_regmap))
+		return PTR_ERR(drv_data->bcast_regmap);
+
 	ret = regmap_read(drv_data->regmap, LLCC_COMMON_STATUS0,
 						&num_banks);
 	if (ret)
@@ -318,8 +331,6 @@ int qcom_llcc_probe(struct platform_device *pdev,
 	for (i = 0; i < num_banks; i++)
 		drv_data->offsets[i] = i * BANK_OFFSET_STRIDE;
 
-	drv_data->bcast_off = num_banks * BANK_OFFSET_STRIDE;
-
 	drv_data->bitmap = devm_kcalloc(dev,
 	BITS_TO_LONGS(drv_data->max_slices), sizeof(unsigned long),
 						GFP_KERNEL);