[PATCH net-next 01/15] net: sparx5: add support for private match data

[Daniel Machon]

In preparation for lan969x, add support for private match data. This
will be needed for abstracting away differences between the Sparx5 and
lan969x platforms. We initially add values for: iomap, iomap size and
ioranges. Update the use of these throughout.

Signed-off-by: Daniel Machon <daniel.machon@xxxxxxxxxxxxx>
Reviewed-by: Steen Hegelund <Steen.Hegelund@xxxxxxxxxxxxx>
---
 .../net/ethernet/microchip/sparx5/sparx5_main.c    | 36 +++++++++++++---------
 .../net/ethernet/microchip/sparx5/sparx5_main.h    | 13 ++++++++
 2 files changed, 34 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
index b64c814eac11..179a1dc0d8f6 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c
@@ -45,12 +45,6 @@ struct sparx5_ram_config {
 	u32 init_val;
 };
 
-struct sparx5_main_io_resource {
-	enum sparx5_target id;
-	phys_addr_t offset;
-	int range;
-};
-
 static const struct sparx5_main_io_resource sparx5_main_iomap[] =  {
 	{ TARGET_CPU,                         0, 0 }, /* 0x600000000 */
 	{ TARGET_FDMA,                  0x80000, 0 }, /* 0x600080000 */
@@ -216,21 +210,24 @@ static const struct sparx5_main_io_resource sparx5_main_iomap[] =  {
 
 static int sparx5_create_targets(struct sparx5 *sparx5)
 {
+	const struct sparx5_main_io_resource *iomap = sparx5->data->iomap;
+	int iomap_size = sparx5->data->iomap_size;
+	int ioranges = sparx5->data->ioranges;
 	struct resource *iores[IO_RANGES];
 	void __iomem *iomem[IO_RANGES];
 	void __iomem *begin[IO_RANGES];
 	int range_id[IO_RANGES];
 	int idx, jdx;
 
-	for (idx = 0, jdx = 0; jdx < ARRAY_SIZE(sparx5_main_iomap); jdx++) {
-		const struct sparx5_main_io_resource *iomap = &sparx5_main_iomap[jdx];
+	for (idx = 0, jdx = 0; jdx < iomap_size; jdx++) {
+		const struct sparx5_main_io_resource *io = &iomap[jdx];
 
-		if (idx == iomap->range) {
+		if (idx == io->range) {
 			range_id[idx] = jdx;
 			idx++;
 		}
 	}
-	for (idx = 0; idx < IO_RANGES; idx++) {
+	for (idx = 0; idx < ioranges; idx++) {
 		iores[idx] = platform_get_resource(sparx5->pdev, IORESOURCE_MEM,
 						   idx);
 		if (!iores[idx]) {
@@ -245,12 +242,12 @@ static int sparx5_create_targets(struct sparx5 *sparx5)
 				iores[idx]->name);
 			return -ENOMEM;
 		}
-		begin[idx] = iomem[idx] - sparx5_main_iomap[range_id[idx]].offset;
+		begin[idx] = iomem[idx] - iomap[range_id[idx]].offset;
 	}
-	for (jdx = 0; jdx < ARRAY_SIZE(sparx5_main_iomap); jdx++) {
-		const struct sparx5_main_io_resource *iomap = &sparx5_main_iomap[jdx];
+	for (jdx = 0; jdx < iomap_size; jdx++) {
+		const struct sparx5_main_io_resource *io = &iomap[jdx];
 
-		sparx5->regs[iomap->id] = begin[iomap->range] + iomap->offset;
+		sparx5->regs[io->id] = begin[io->range] + io->offset;
 	}
 	return 0;
 }
@@ -759,6 +756,9 @@ static int mchp_sparx5_probe(struct platform_device *pdev)
 	sparx5->dev = &pdev->dev;
 	spin_lock_init(&sparx5->tx_lock);
 
+	sparx5->data = device_get_match_data(sparx5->dev);
+	if (!sparx5->data)
+		return -EINVAL;
 	/* Do switch core reset if available */
 	reset = devm_reset_control_get_optional_shared(&pdev->dev, "switch");
 	if (IS_ERR(reset))
@@ -937,8 +937,14 @@ static void mchp_sparx5_remove(struct platform_device *pdev)
 	destroy_workqueue(sparx5->mact_queue);
 }
 
+static const struct sparx5_match_data sparx5_desc = {
+	.iomap = sparx5_main_iomap,
+	.iomap_size = ARRAY_SIZE(sparx5_main_iomap),
+	.ioranges = 3,
+};
+
 static const struct of_device_id mchp_sparx5_match[] = {
-	{ .compatible = "microchip,sparx5-switch" },
+	{ .compatible = "microchip,sparx5-switch", .data = &sparx5_desc },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, mchp_sparx5_match);
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
index 3309060b1e4c..845f918aaf5e 100644
--- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h
@@ -226,6 +226,18 @@ struct sparx5_mall_entry {
 #define SPARX5_SKB_CB(skb) \
 	((struct sparx5_skb_cb *)((skb)->cb))
 
+struct sparx5_main_io_resource {
+	enum sparx5_target id;
+	phys_addr_t offset;
+	int range;
+};
+
+struct sparx5_match_data {
+	const struct sparx5_main_io_resource *iomap;
+	int ioranges;
+	int iomap_size;
+};
+
 struct sparx5 {
 	struct platform_device *pdev;
 	struct device *dev;
@@ -293,6 +305,7 @@ struct sparx5 {
 	struct list_head mall_entries;
 	/* Common root for debugfs */
 	struct dentry *debugfs_root;
+	const struct sparx5_match_data *data;
 };
 
 /* sparx5_switchdev.c */

-- 
2.34.1