[PATCH net-next 3/4] net: ipa: don't assume 8 modem routing table entries

From: Alex Elder
Date: Tue Oct 25 2022 - 15:52:14 EST

Currently all platforms are assumed allot 8 routing table entries
for use by the modem. Instead, add a new configuration data entry
that defines the number of modem routing table entries, and record
that in the IPA structure.

Signed-off-by: Alex Elder <elder@xxxxxxxxxx>
---
drivers/net/ipa/data/ipa_data-v3.1.c | 19 +++++++++---------
drivers/net/ipa/data/ipa_data-v3.5.1.c | 27 +++++++++++++-------------
drivers/net/ipa/data/ipa_data-v4.11.c | 17 ++++++++--------
drivers/net/ipa/data/ipa_data-v4.2.c | 17 ++++++++--------
drivers/net/ipa/data/ipa_data-v4.5.c | 17 ++++++++--------
drivers/net/ipa/data/ipa_data-v4.9.c | 17 ++++++++--------
drivers/net/ipa/ipa.h | 2 ++
drivers/net/ipa/ipa_data.h | 2 ++
drivers/net/ipa/ipa_main.c | 6 ++++++
drivers/net/ipa/ipa_mem.c | 4 ++--
drivers/net/ipa/ipa_qmi.c | 9 +++++----
drivers/net/ipa/ipa_table.c | 21 +++++++++-----------
drivers/net/ipa/ipa_table.h | 7 ++-----
13 files changed, 88 insertions(+), 77 deletions(-)

diff --git a/drivers/net/ipa/data/ipa_data-v3.1.c b/drivers/net/ipa/data/ipa_data-v3.1.c
index e0d71f6092729..3380fb3483b2c 100644
--- a/drivers/net/ipa/data/ipa_data-v3.1.c
+++ b/drivers/net/ipa/data/ipa_data-v3.1.c
@@ -525,13 +525,14 @@ static const struct ipa_power_data ipa_power_data = {

/* Configuration data for an SoC having IPA v3.1 */
const struct ipa_data ipa_data_v3_1 = {
- .version = IPA_VERSION_3_1,
- .backward_compat = BIT(BCR_CMDQ_L_LACK_ONE_ENTRY),
- .qsb_count = ARRAY_SIZE(ipa_qsb_data),
- .qsb_data = ipa_qsb_data,
- .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
- .endpoint_data = ipa_gsi_endpoint_data,
- .resource_data = &ipa_resource_data,
- .mem_data = &ipa_mem_data,
- .power_data = &ipa_power_data,
+ .version = IPA_VERSION_3_1,
+ .backward_compat = BIT(BCR_CMDQ_L_LACK_ONE_ENTRY),
+ .qsb_count = ARRAY_SIZE(ipa_qsb_data),
+ .qsb_data = ipa_qsb_data,
+ .modem_route_count = 8,
+ .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
+ .endpoint_data = ipa_gsi_endpoint_data,
+ .resource_data = &ipa_resource_data,
+ .mem_data = &ipa_mem_data,
+ .power_data = &ipa_power_data,
};
diff --git a/drivers/net/ipa/data/ipa_data-v3.5.1.c b/drivers/net/ipa/data/ipa_data-v3.5.1.c
index 383ef18900654..47591faf8bd62 100644
--- a/drivers/net/ipa/data/ipa_data-v3.5.1.c
+++ b/drivers/net/ipa/data/ipa_data-v3.5.1.c
@@ -406,17 +406,18 @@ static const struct ipa_power_data ipa_power_data = {

/* Configuration data for an SoC having IPA v3.5.1 */
const struct ipa_data ipa_data_v3_5_1 = {
- .version = IPA_VERSION_3_5_1,
- .backward_compat = BIT(BCR_CMDQ_L_LACK_ONE_ENTRY) |
- BIT(BCR_TX_NOT_USING_BRESP) |
- BIT(BCR_SUSPEND_L2_IRQ) |
- BIT(BCR_HOLB_DROP_L2_IRQ) |
- BIT(BCR_DUAL_TX),
- .qsb_count = ARRAY_SIZE(ipa_qsb_data),
- .qsb_data = ipa_qsb_data,
- .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
- .endpoint_data = ipa_gsi_endpoint_data,
- .resource_data = &ipa_resource_data,
- .mem_data = &ipa_mem_data,
- .power_data = &ipa_power_data,
+ .version = IPA_VERSION_3_5_1,
+ .backward_compat = BIT(BCR_CMDQ_L_LACK_ONE_ENTRY) |
+ BIT(BCR_TX_NOT_USING_BRESP) |
+ BIT(BCR_SUSPEND_L2_IRQ) |
+ BIT(BCR_HOLB_DROP_L2_IRQ) |
+ BIT(BCR_DUAL_TX),
+ .qsb_count = ARRAY_SIZE(ipa_qsb_data),
+ .qsb_data = ipa_qsb_data,
+ .modem_route_count = 8,
+ .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
+ .endpoint_data = ipa_gsi_endpoint_data,
+ .resource_data = &ipa_resource_data,
+ .mem_data = &ipa_mem_data,
+ .power_data = &ipa_power_data,
};
diff --git a/drivers/net/ipa/data/ipa_data-v4.11.c b/drivers/net/ipa/data/ipa_data-v4.11.c
index a204e439c23d3..1b4b52501ee33 100644
--- a/drivers/net/ipa/data/ipa_data-v4.11.c
+++ b/drivers/net/ipa/data/ipa_data-v4.11.c
@@ -394,12 +394,13 @@ static const struct ipa_power_data ipa_power_data = {

/* Configuration data for an SoC having IPA v4.11 */
const struct ipa_data ipa_data_v4_11 = {
- .version = IPA_VERSION_4_11,
- .qsb_count = ARRAY_SIZE(ipa_qsb_data),
- .qsb_data = ipa_qsb_data,
- .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
- .endpoint_data = ipa_gsi_endpoint_data,
- .resource_data = &ipa_resource_data,
- .mem_data = &ipa_mem_data,
- .power_data = &ipa_power_data,
+ .version = IPA_VERSION_4_11,
+ .qsb_count = ARRAY_SIZE(ipa_qsb_data),
+ .qsb_data = ipa_qsb_data,
+ .modem_route_count = 8,
+ .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
+ .endpoint_data = ipa_gsi_endpoint_data,
+ .resource_data = &ipa_resource_data,
+ .mem_data = &ipa_mem_data,
+ .power_data = &ipa_power_data,
};
diff --git a/drivers/net/ipa/data/ipa_data-v4.2.c b/drivers/net/ipa/data/ipa_data-v4.2.c
index 04f574fe006f0..199ed0ed868b9 100644
--- a/drivers/net/ipa/data/ipa_data-v4.2.c
+++ b/drivers/net/ipa/data/ipa_data-v4.2.c
@@ -372,13 +372,14 @@ static const struct ipa_power_data ipa_power_data = {

/* Configuration data for an SoC having IPA v4.2 */
const struct ipa_data ipa_data_v4_2 = {
- .version = IPA_VERSION_4_2,
+ .version = IPA_VERSION_4_2,
/* backward_compat value is 0 */
- .qsb_count = ARRAY_SIZE(ipa_qsb_data),
- .qsb_data = ipa_qsb_data,
- .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
- .endpoint_data = ipa_gsi_endpoint_data,
- .resource_data = &ipa_resource_data,
- .mem_data = &ipa_mem_data,
- .power_data = &ipa_power_data,
+ .qsb_count = ARRAY_SIZE(ipa_qsb_data),
+ .qsb_data = ipa_qsb_data,
+ .modem_route_count = 8,
+ .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
+ .endpoint_data = ipa_gsi_endpoint_data,
+ .resource_data = &ipa_resource_data,
+ .mem_data = &ipa_mem_data,
+ .power_data = &ipa_power_data,
};
diff --git a/drivers/net/ipa/data/ipa_data-v4.5.c b/drivers/net/ipa/data/ipa_data-v4.5.c
index 684239e71f46a..19b549f2998b8 100644
--- a/drivers/net/ipa/data/ipa_data-v4.5.c
+++ b/drivers/net/ipa/data/ipa_data-v4.5.c
@@ -450,12 +450,13 @@ static const struct ipa_power_data ipa_power_data = {

/* Configuration data for an SoC having IPA v4.5 */
const struct ipa_data ipa_data_v4_5 = {
- .version = IPA_VERSION_4_5,
- .qsb_count = ARRAY_SIZE(ipa_qsb_data),
- .qsb_data = ipa_qsb_data,
- .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
- .endpoint_data = ipa_gsi_endpoint_data,
- .resource_data = &ipa_resource_data,
- .mem_data = &ipa_mem_data,
- .power_data = &ipa_power_data,
+ .version = IPA_VERSION_4_5,
+ .qsb_count = ARRAY_SIZE(ipa_qsb_data),
+ .qsb_data = ipa_qsb_data,
+ .modem_route_count = 8,
+ .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
+ .endpoint_data = ipa_gsi_endpoint_data,
+ .resource_data = &ipa_resource_data,
+ .mem_data = &ipa_mem_data,
+ .power_data = &ipa_power_data,
};
diff --git a/drivers/net/ipa/data/ipa_data-v4.9.c b/drivers/net/ipa/data/ipa_data-v4.9.c
index 2333e15f95338..d30fc1fe6ca22 100644
--- a/drivers/net/ipa/data/ipa_data-v4.9.c
+++ b/drivers/net/ipa/data/ipa_data-v4.9.c
@@ -444,12 +444,13 @@ static const struct ipa_power_data ipa_power_data = {

/* Configuration data for an SoC having IPA v4.9. */
const struct ipa_data ipa_data_v4_9 = {
- .version = IPA_VERSION_4_9,
- .qsb_count = ARRAY_SIZE(ipa_qsb_data),
- .qsb_data = ipa_qsb_data,
- .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
- .endpoint_data = ipa_gsi_endpoint_data,
- .resource_data = &ipa_resource_data,
- .mem_data = &ipa_mem_data,
- .power_data = &ipa_power_data,
+ .version = IPA_VERSION_4_9,
+ .qsb_count = ARRAY_SIZE(ipa_qsb_data),
+ .qsb_data = ipa_qsb_data,
+ .modem_route_count = 8,
+ .endpoint_count = ARRAY_SIZE(ipa_gsi_endpoint_data),
+ .endpoint_data = ipa_gsi_endpoint_data,
+ .resource_data = &ipa_resource_data,
+ .mem_data = &ipa_mem_data,
+ .power_data = &ipa_power_data,
};
diff --git a/drivers/net/ipa/ipa.h b/drivers/net/ipa/ipa.h
index aa39509e209a3..5c95acc70bb33 100644
--- a/drivers/net/ipa/ipa.h
+++ b/drivers/net/ipa/ipa.h
@@ -40,6 +40,7 @@ struct ipa_interrupt;
* @table_addr: DMA address of filter/route table content
* @table_virt: Virtual address of filter/route table content
* @route_count: Total number of entries in a routing table
+ * @modem_route_count: Number of modem entries in a routing table
* @interrupt: IPA Interrupt information
* @uc_powered: true if power is active by proxy for microcontroller
* @uc_loaded: true after microcontroller has reported it's ready
@@ -86,6 +87,7 @@ struct ipa {
dma_addr_t table_addr;
__le64 *table_virt;
u32 route_count;
+ u32 modem_route_count;

struct ipa_interrupt *interrupt;
bool uc_powered;
diff --git a/drivers/net/ipa/ipa_data.h b/drivers/net/ipa/ipa_data.h
index e5a6ce75c7ddd..412edbfac7862 100644
--- a/drivers/net/ipa/ipa_data.h
+++ b/drivers/net/ipa/ipa_data.h
@@ -222,6 +222,7 @@ struct ipa_power_data {
* @backward_compat: BCR register value (prior to IPA v4.5 only)
* @qsb_count: number of entries in the qsb_data array
* @qsb_data: Qualcomm System Bus configuration data
+ * @modem_route_count: number of modem entries in a routing table
* @endpoint_count: number of entries in the endpoint_data array
* @endpoint_data: IPA endpoint/GSI channel data
* @resource_data: IPA resource configuration data
@@ -233,6 +234,7 @@ struct ipa_data {
u32 backward_compat;
u32 qsb_count; /* number of entries in qsb_data[] */
const struct ipa_qsb_data *qsb_data;
+ u32 modem_route_count;
u32 endpoint_count; /* number of entries in endpoint_data[] */
const struct ipa_gsi_endpoint_data *endpoint_data;
const struct ipa_resource_data *resource_data;
diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c
index 3461ad3029ab8..ce5eadad671f3 100644
--- a/drivers/net/ipa/ipa_main.c
+++ b/drivers/net/ipa/ipa_main.c
@@ -739,6 +739,11 @@ static int ipa_probe(struct platform_device *pdev)
return -EINVAL;
}

+ if (!data->modem_route_count) {
+ dev_err(dev, "modem_route_count cannot be zero\n");
+ return -EINVAL;
+ }
+
/* If we need Trust Zone, make sure it's available */
modem_init = of_property_read_bool(dev->of_node, "modem-init");
if (!modem_init)
@@ -763,6 +768,7 @@ static int ipa_probe(struct platform_device *pdev)
dev_set_drvdata(dev, ipa);
ipa->power = power;
ipa->version = data->version;
+ ipa->modem_route_count = data->modem_route_count;
init_completion(&ipa->completion);

ret = ipa_reg_init(ipa);
diff --git a/drivers/net/ipa/ipa_mem.c b/drivers/net/ipa/ipa_mem.c
index a3d2317452ac6..cb95402018394 100644
--- a/drivers/net/ipa/ipa_mem.c
+++ b/drivers/net/ipa/ipa_mem.c
@@ -618,9 +618,9 @@ int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data)
ipa->mem = mem_data->local;

/* Check the route and filter table memory regions */
- if (!ipa_table_mem_valid(ipa, 0))
+ if (!ipa_table_mem_valid(ipa, false))
return -EINVAL;
- if (!ipa_table_mem_valid(ipa, IPA_ROUTE_MODEM_COUNT))
+ if (!ipa_table_mem_valid(ipa, true))
return -EINVAL;

ret = dma_set_mask_and_coherent(&ipa->pdev->dev, DMA_BIT_MASK(64));
diff --git a/drivers/net/ipa/ipa_qmi.c b/drivers/net/ipa/ipa_qmi.c
index 8295fd4b70d16..f70f0a1d1cdac 100644
--- a/drivers/net/ipa/ipa_qmi.c
+++ b/drivers/net/ipa/ipa_qmi.c
@@ -284,6 +284,7 @@ static const struct ipa_init_modem_driver_req *
init_modem_driver_req(struct ipa_qmi *ipa_qmi)
{
struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi);
+ u32 modem_route_count = ipa->modem_route_count;
static struct ipa_init_modem_driver_req req;
const struct ipa_mem *mem;

@@ -308,12 +309,12 @@ init_modem_driver_req(struct ipa_qmi *ipa_qmi)
mem = ipa_mem_find(ipa, IPA_MEM_V4_ROUTE);
req.v4_route_tbl_info_valid = 1;
req.v4_route_tbl_info.start = ipa->mem_offset + mem->offset;
- req.v4_route_tbl_info.end = IPA_ROUTE_MODEM_COUNT - 1;
+ req.v4_route_tbl_info.end = modem_route_count - 1;

mem = ipa_mem_find(ipa, IPA_MEM_V6_ROUTE);
req.v6_route_tbl_info_valid = 1;
req.v6_route_tbl_info.start = ipa->mem_offset + mem->offset;
- req.v6_route_tbl_info.end = IPA_ROUTE_MODEM_COUNT - 1;
+ req.v6_route_tbl_info.end = modem_route_count - 1;

mem = ipa_mem_find(ipa, IPA_MEM_V4_FILTER);
req.v4_filter_tbl_start_valid = 1;
@@ -352,7 +353,7 @@ init_modem_driver_req(struct ipa_qmi *ipa_qmi)
req.v4_hash_route_tbl_info_valid = 1;
req.v4_hash_route_tbl_info.start =
ipa->mem_offset + mem->offset;
- req.v4_hash_route_tbl_info.end = IPA_ROUTE_MODEM_COUNT - 1;
+ req.v4_hash_route_tbl_info.end = modem_route_count - 1;
}

mem = ipa_mem_find(ipa, IPA_MEM_V6_ROUTE_HASHED);
@@ -360,7 +361,7 @@ init_modem_driver_req(struct ipa_qmi *ipa_qmi)
req.v6_hash_route_tbl_info_valid = 1;
req.v6_hash_route_tbl_info.start =
ipa->mem_offset + mem->offset;
- req.v6_hash_route_tbl_info.end = IPA_ROUTE_MODEM_COUNT - 1;
+ req.v6_hash_route_tbl_info.end = modem_route_count - 1;
}

mem = ipa_mem_find(ipa, IPA_MEM_V4_FILTER_HASHED);
diff --git a/drivers/net/ipa/ipa_table.c b/drivers/net/ipa/ipa_table.c
index 23d3f081ac8e1..c9ab6a3fabbc3 100644
--- a/drivers/net/ipa/ipa_table.c
+++ b/drivers/net/ipa/ipa_table.c
@@ -129,9 +129,6 @@ static void ipa_table_validate_build(void)
* assumes that it can be written using a pointer to __le64.
*/
BUILD_BUG_ON(IPA_ZERO_RULE_SIZE != sizeof(__le64));
-
- /* The modem must be allotted at least one route table entry */
- BUILD_BUG_ON(!IPA_ROUTE_MODEM_COUNT);
}

static const struct ipa_mem *
@@ -281,6 +278,7 @@ static int ipa_filter_reset(struct ipa *ipa, bool modem)
* */
static int ipa_route_reset(struct ipa *ipa, bool modem)
{
+ u32 modem_route_count = ipa->modem_route_count;
struct gsi_trans *trans;
u16 first;
u16 count;
@@ -295,10 +293,10 @@ static int ipa_route_reset(struct ipa *ipa, bool modem)

if (modem) {
first = 0;
- count = IPA_ROUTE_MODEM_COUNT;
+ count = modem_route_count;
} else {
- first = IPA_ROUTE_MODEM_COUNT;
- count = ipa->route_count - IPA_ROUTE_MODEM_COUNT;
+ first = modem_route_count;
+ count = ipa->route_count - modem_route_count;
}

ipa_table_reset_add(trans, false, first, count, IPA_MEM_V4_ROUTE);
@@ -511,9 +509,9 @@ static void ipa_filter_config(struct ipa *ipa, bool modem)
}
}

-static bool ipa_route_id_modem(u32 route_id)
+static bool ipa_route_id_modem(struct ipa *ipa, u32 route_id)
{
- return route_id < IPA_ROUTE_MODEM_COUNT;
+ return route_id < ipa->modem_route_count;
}

/**
@@ -549,7 +547,7 @@ static void ipa_route_config(struct ipa *ipa, bool modem)
return;

for (route_id = 0; route_id < ipa->route_count; route_id++)
- if (ipa_route_id_modem(route_id) == modem)
+ if (ipa_route_id_modem(ipa, route_id) == modem)
ipa_route_tuple_zero(ipa, route_id);
}

@@ -565,10 +563,9 @@ void ipa_table_config(struct ipa *ipa)
/* Verify the sizes of all IPA table filter or routing table memory regions
* are valid. If valid, this records the size of the routing table.
*/
-bool ipa_table_mem_valid(struct ipa *ipa, bool modem_route_count)
+bool ipa_table_mem_valid(struct ipa *ipa, bool filter)
{
bool hash_support = ipa_table_hash_support(ipa);
- bool filter = !modem_route_count;
const struct ipa_mem *mem_hashed;
const struct ipa_mem *mem_ipv4;
const struct ipa_mem *mem_ipv6;
@@ -611,7 +608,7 @@ bool ipa_table_mem_valid(struct ipa *ipa, bool modem_route_count)
/* Routing tables must be able to hold all modem entries,
* plus at least one entry for the AP.
*/
- if (count < modem_route_count + 1)
+ if (count < ipa->modem_route_count + 1)
return false;
}

diff --git a/drivers/net/ipa/ipa_table.h b/drivers/net/ipa/ipa_table.h
index 31363292dc1db..79583b16f363f 100644
--- a/drivers/net/ipa/ipa_table.h
+++ b/drivers/net/ipa/ipa_table.h
@@ -13,9 +13,6 @@ struct ipa;
/* The maximum number of filter table entries (IPv4, IPv6; hashed or not) */
#define IPA_FILTER_COUNT_MAX 14

-/* The number of route table entries allotted to the modem */
-#define IPA_ROUTE_MODEM_COUNT 8
-
/**
* ipa_filter_map_valid() - Validate a filter table endpoint bitmap
* @ipa: IPA pointer
@@ -78,8 +75,8 @@ void ipa_table_exit(struct ipa *ipa);
/**
* ipa_table_mem_valid() - Validate sizes of table memory regions
* @ipa: IPA pointer
- * @modem_route_count: Number of modem route table entries
+ * @filter: Whether to check filter or routing tables
*/
-bool ipa_table_mem_valid(struct ipa *ipa, bool modem_route_count);
+bool ipa_table_mem_valid(struct ipa *ipa, bool filter);

#endif /* _IPA_TABLE_H_ */
--
2.34.1