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Message-Id: <20200504175859.22606-3-elder@linaro.org>
Date: Mon, 4 May 2020 12:58:57 -0500
From: Alex Elder <elder@...aro.org>
To: davem@...emloft.net
Cc: evgreen@...omium.org, subashab@...eaurora.org,
cpratapa@...eaurora.org, bjorn.andersson@...aro.org,
agross@...nel.org, robh+dt@...nel.org, netdev@...r.kernel.org,
devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 2/4] 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 <elder@...aro.org>
---
drivers/net/ipa/ipa_data-sc7180.c | 10 +++++++---
drivers/net/ipa/ipa_data-sdm845.c | 10 +++++++---
drivers/net/ipa/ipa_data.h | 13 +++++--------
drivers/net/ipa/ipa_main.c | 2 +-
drivers/net/ipa/ipa_mem.c | 9 +++++----
drivers/net/ipa/ipa_mem.h | 3 ++-
6 files changed, 27 insertions(+), 20 deletions(-)
diff --git a/drivers/net/ipa/ipa_data-sc7180.c b/drivers/net/ipa/ipa_data-sc7180.c
index 042b5fc3c135..f97e7e4e61c1 100644
--- a/drivers/net/ipa/ipa_data-sc7180.c
+++ b/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,
};
diff --git a/drivers/net/ipa/ipa_data-sdm845.c b/drivers/net/ipa/ipa_data-sdm845.c
index 0d9c36e1e806..c55507e94559 100644
--- a/drivers/net/ipa/ipa_data-sdm845.c
+++ b/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,
};
diff --git a/drivers/net/ipa/ipa_data.h b/drivers/net/ipa/ipa_data.h
index 7110de2de817..51d8e5a6f23a 100644
--- a/drivers/net/ipa/ipa_data.h
+++ b/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;
diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c
index 28998dcce3d2..9295a9122e8e 100644
--- a/drivers/net/ipa/ipa_main.c
+++ b/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;
diff --git a/drivers/net/ipa/ipa_mem.c b/drivers/net/ipa/ipa_mem.c
index 42d2c29d9f0c..fb4de2a12796 100644
--- a/drivers/net/ipa/ipa_mem.c
+++ b/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;
}
diff --git a/drivers/net/ipa/ipa_mem.h b/drivers/net/ipa/ipa_mem.h
index 065cb499ebe5..f99180f84f0d 100644
--- a/drivers/net/ipa/ipa_mem.h
+++ b/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_ */
--
2.20.1
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