net: ipa: redefine struct ipa_mem_data

The ipa_mem_data structure type was never actually used.  Instead,
the IPA memory regions were defined using the ipa_mem structure.

Redefine struct ipa_mem_data so it encapsulates the array of IPA-local
memory region descriptors along with the count of entries in that
array.  Pass just an ipa_mem structure pointer to ipa_mem_init().

Rename the ipa_mem_data[] array ipa_mem_local_data[] to emphasize
that the memory regions it defines are IPA-local memory.

Signed-off-by: Alex Elder <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Alex Elder

drivers/net/ipa/ipa_data-sc7180.c

@@ -193,7 +193,7 @@ static const struct ipa_resource_data ipa_resource_data = {
 };
 
 /* IPA-resident memory region configuration for the SC7180 SoC. */
-static const struct ipa_mem ipa_mem_data[] = {
+static const struct ipa_mem ipa_mem_local_data[] = {
 	[IPA_MEM_UC_SHARED] = {
 		.offset		= 0x0000,
 		.size		= 0x0080,
@@ -296,12 +296,16 @@ static const struct ipa_mem ipa_mem_data[] = {
 	},
 };
 
+static struct ipa_mem_data ipa_mem_data = {
+	.local_count	= ARRAY_SIZE(ipa_mem_local_data),
+	.local		= ipa_mem_local_data,
+};
+
 /* Configuration data for the SC7180 SoC. */
 const struct ipa_data ipa_data_sc7180 = {
 	.version	= IPA_VERSION_4_2,
 	.endpoint_count	= ARRAY_SIZE(ipa_gsi_endpoint_data),
 	.endpoint_data	= ipa_gsi_endpoint_data,
 	.resource_data	= &ipa_resource_data,
-	.mem_count	= ARRAY_SIZE(ipa_mem_data),
-	.mem_data	= ipa_mem_data,
+	.mem_data	= &ipa_mem_data,
 };

drivers/net/ipa/ipa_data-sdm845.c

@@ -235,7 +235,7 @@ static const struct ipa_resource_data ipa_resource_data = {
 };
 
 /* IPA-resident memory region configuration for the SDM845 SoC. */
-static const struct ipa_mem ipa_mem_data[] = {
+static const struct ipa_mem ipa_mem_local_data[] = {
 	[IPA_MEM_UC_SHARED] = {
 		.offset		= 0x0000,
 		.size		= 0x0080,
@@ -318,12 +318,16 @@ static const struct ipa_mem ipa_mem_data[] = {
 	},
 };
 
+static struct ipa_mem_data ipa_mem_data = {
+	.local_count	= ARRAY_SIZE(ipa_mem_local_data),
+	.local		= ipa_mem_local_data,
+};
+
 /* Configuration data for the SDM845 SoC. */
 const struct ipa_data ipa_data_sdm845 = {
 	.version	= IPA_VERSION_3_5_1,
 	.endpoint_count	= ARRAY_SIZE(ipa_gsi_endpoint_data),
 	.endpoint_data	= ipa_gsi_endpoint_data,
 	.resource_data	= &ipa_resource_data,
-	.mem_count	= ARRAY_SIZE(ipa_mem_data),
-	.mem_data	= ipa_mem_data,
+	.mem_data	= &ipa_mem_data,
 };

drivers/net/ipa/ipa_data.h

@@ -246,14 +246,12 @@ struct ipa_resource_data {
 
 /**
  * struct ipa_mem - IPA-local memory region description
- * @offset:		offset in IPA memory space to base of the region
- * @size:		size in bytes base of the region
- * @canary_count:	number of 32-bit "canary" values that precede region
+ * @local_count:	number of regions defined in the local[] array
+ * @local:		array of IPA-local memory region descriptors
  */
 struct ipa_mem_data {
-	u32 offset;
-	u16 size;
-	u16 canary_count;
+	u32 local_count;
+	const struct ipa_mem *local;
 };
 
 /**
@@ -270,8 +268,7 @@ struct ipa_data {
 	u32 endpoint_count;	/* # entries in endpoint_data[] */
 	const struct ipa_gsi_endpoint_data *endpoint_data;
 	const struct ipa_resource_data *resource_data;
-	u32 mem_count;		/* # entries in mem_data[] */
-	const struct ipa_mem *mem_data;
+	const struct ipa_mem_data *mem_data;
 };
 
 extern const struct ipa_data ipa_data_sdm845;

drivers/net/ipa/ipa_main.c

@@ -778,7 +778,7 @@ static int ipa_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_kfree_ipa;
 
-	ret = ipa_mem_init(ipa, data->mem_count, data->mem_data);
+	ret = ipa_mem_init(ipa, data->mem_data);
 	if (ret)
 		goto err_reg_exit;
 

drivers/net/ipa/ipa_mem.c

@@ -12,6 +12,7 @@
 
 #include "ipa.h"
 #include "ipa_reg.h"
+#include "ipa_data.h"
 #include "ipa_cmd.h"
 #include "ipa_mem.h"
 #include "ipa_data.h"
@@ -266,15 +267,15 @@ int ipa_mem_zero_modem(struct ipa *ipa)
 }
 
 /* Perform memory region-related initialization */
-int ipa_mem_init(struct ipa *ipa, u32 count, const struct ipa_mem *mem)
+int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data)
 {
 	struct device *dev = &ipa->pdev->dev;
 	struct resource *res;
 	int ret;
 
-	if (count > IPA_MEM_COUNT) {
+	if (mem_data->local_count > IPA_MEM_COUNT) {
 		dev_err(dev, "to many memory regions (%u > %u)\n",
-			count, IPA_MEM_COUNT);
+			mem_data->local_count, IPA_MEM_COUNT);
 		return -EINVAL;
 	}
 
@@ -302,7 +303,7 @@ int ipa_mem_init(struct ipa *ipa, u32 count, const struct ipa_mem *mem)
 	ipa->mem_size = resource_size(res);
 
 	/* The ipa->mem[] array is indexed by enum ipa_mem_id values */
-	ipa->mem = mem;
+	ipa->mem = mem_data->local;
 
 	return 0;
 }

drivers/net/ipa/ipa_mem.h

@@ -7,6 +7,7 @@
 #define _IPA_MEM_H_
 
 struct ipa;
+struct ipa_mem_data;
 
 /**
  * DOC: IPA Local Memory
@@ -84,7 +85,7 @@ void ipa_mem_teardown(struct ipa *ipa);
 
 int ipa_mem_zero_modem(struct ipa *ipa);
 
-int ipa_mem_init(struct ipa *ipa, u32 count, const struct ipa_mem *mem);
+int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data);
 void ipa_mem_exit(struct ipa *ipa);
 
 #endif /* _IPA_MEM_H_ */