diff options
| -rw-r--r-- | drivers/net/ipa/ipa_cmd.c | 53 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_cmd.h | 16 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_mem.c | 14 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_table.c | 162 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_table.h | 15 |
5 files changed, 138 insertions, 122 deletions
diff --git a/drivers/net/ipa/ipa_cmd.c b/drivers/net/ipa/ipa_cmd.c index 26c3db9f52b1..de2cd86aa9e2 100644 --- a/drivers/net/ipa/ipa_cmd.c +++ b/drivers/net/ipa/ipa_cmd.c @@ -171,7 +171,8 @@ static void ipa_cmd_validate_build(void) } /* Validate a memory region holding a table */ -bool ipa_cmd_table_valid(struct ipa *ipa, const struct ipa_mem *mem, bool route) +bool ipa_cmd_table_init_valid(struct ipa *ipa, const struct ipa_mem *mem, + bool route) { u32 offset_max = field_max(IP_FLTRT_FLAGS_NHASH_ADDR_FMASK); u32 size_max = field_max(IP_FLTRT_FLAGS_NHASH_SIZE_FMASK); @@ -197,21 +198,11 @@ bool ipa_cmd_table_valid(struct ipa *ipa, const struct ipa_mem *mem, bool route) return false; } - /* Entire memory range must fit within IPA-local memory */ - if (mem->offset > ipa->mem_size || - mem->size > ipa->mem_size - mem->offset) { - dev_err(dev, "%s table region out of range\n", table); - dev_err(dev, " (0x%04x + 0x%04x > 0x%04x)\n", - mem->offset, mem->size, ipa->mem_size); - - return false; - } - return true; } /* Validate the memory region that holds headers */ -static bool ipa_cmd_header_valid(struct ipa *ipa) +static bool ipa_cmd_header_init_local_valid(struct ipa *ipa) { struct device *dev = &ipa->pdev->dev; const struct ipa_mem *mem; @@ -257,15 +248,6 @@ static bool ipa_cmd_header_valid(struct ipa *ipa) return false; } - /* Make sure the entire combined area fits in IPA memory */ - if (size > ipa->mem_size || offset > ipa->mem_size - size) { - dev_err(dev, "header table region out of range\n"); - dev_err(dev, " (0x%04x + 0x%04x > 0x%04x)\n", - offset, size, ipa->mem_size); - - return false; - } - return true; } @@ -336,26 +318,11 @@ static bool ipa_cmd_register_write_valid(struct ipa *ipa) return true; } -bool ipa_cmd_data_valid(struct ipa *ipa) -{ - if (!ipa_cmd_header_valid(ipa)) - return false; - - if (!ipa_cmd_register_write_valid(ipa)) - return false; - - return true; -} - - int ipa_cmd_pool_init(struct gsi_channel *channel, u32 tre_max) { struct gsi_trans_info *trans_info = &channel->trans_info; struct device *dev = channel->gsi->dev; - /* This is as good a place as any to validate build constants */ - ipa_cmd_validate_build(); - /* Command payloads are allocated one at a time, but a single * transaction can require up to the maximum supported by the * channel; treat them as if they were allocated all at once. @@ -655,3 +622,17 @@ struct gsi_trans *ipa_cmd_trans_alloc(struct ipa *ipa, u32 tre_count) return gsi_channel_trans_alloc(&ipa->gsi, endpoint->channel_id, tre_count, DMA_NONE); } + +/* Init function for immediate commands; there is no ipa_cmd_exit() */ +int ipa_cmd_init(struct ipa *ipa) +{ + ipa_cmd_validate_build(); + + if (!ipa_cmd_header_init_local_valid(ipa)) + return -EINVAL; + + if (!ipa_cmd_register_write_valid(ipa)) + return -EINVAL; + + return 0; +} diff --git a/drivers/net/ipa/ipa_cmd.h b/drivers/net/ipa/ipa_cmd.h index 8e4243c1f0bb..e2cf1c2b0ef2 100644 --- a/drivers/net/ipa/ipa_cmd.h +++ b/drivers/net/ipa/ipa_cmd.h @@ -47,15 +47,15 @@ enum ipa_cmd_opcode { }; /** - * ipa_cmd_table_valid() - Validate a memory region holding a table + * ipa_cmd_table_init_valid() - Validate a memory region holding a table * @ipa: - IPA pointer * @mem: - IPA memory region descriptor * @route: - Whether the region holds a route or filter table * * Return: true if region is valid, false otherwise */ -bool ipa_cmd_table_valid(struct ipa *ipa, const struct ipa_mem *mem, - bool route); +bool ipa_cmd_table_init_valid(struct ipa *ipa, const struct ipa_mem *mem, + bool route); /** * ipa_cmd_data_valid() - Validate command-realted configuration is valid @@ -162,4 +162,14 @@ void ipa_cmd_pipeline_clear_wait(struct ipa *ipa); */ struct gsi_trans *ipa_cmd_trans_alloc(struct ipa *ipa, u32 tre_count); +/** + * ipa_cmd_init() - Initialize IPA immediate commands + * @ipa: - IPA pointer + * + * Return: 0 if successful, or a negative error code + * + * There is no need for a matching ipa_cmd_exit() function. + */ +int ipa_cmd_init(struct ipa *ipa); + #endif /* _IPA_CMD_H_ */ diff --git a/drivers/net/ipa/ipa_mem.c b/drivers/net/ipa/ipa_mem.c index f84c6830495a..a3d2317452ac 100644 --- a/drivers/net/ipa/ipa_mem.c +++ b/drivers/net/ipa/ipa_mem.c @@ -366,14 +366,6 @@ int ipa_mem_config(struct ipa *ipa) while (--canary_count); } - /* Make sure filter and route table memory regions are valid */ - if (!ipa_table_valid(ipa)) - goto err_dma_free; - - /* Validate memory-related properties relevant to immediate commands */ - if (!ipa_cmd_data_valid(ipa)) - goto err_dma_free; - /* Verify the microcontroller ring alignment (if defined) */ mem = ipa_mem_find(ipa, IPA_MEM_UC_EVENT_RING); if (mem && mem->offset % 1024) { @@ -625,6 +617,12 @@ int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data) ipa->mem_count = mem_data->local_count; ipa->mem = mem_data->local; + /* Check the route and filter table memory regions */ + if (!ipa_table_mem_valid(ipa, 0)) + return -EINVAL; + if (!ipa_table_mem_valid(ipa, IPA_ROUTE_MODEM_COUNT)) + return -EINVAL; + ret = dma_set_mask_and_coherent(&ipa->pdev->dev, DMA_BIT_MASK(64)); if (ret) { dev_err(dev, "error %d setting DMA mask\n", ret); diff --git a/drivers/net/ipa/ipa_table.c b/drivers/net/ipa/ipa_table.c index 510ff2dc8999..58a1a9da3133 100644 --- a/drivers/net/ipa/ipa_table.c +++ b/drivers/net/ipa/ipa_table.c @@ -106,12 +106,6 @@ * ---------------------- */ -/* Assignment of route table entries to the modem and AP */ -#define IPA_ROUTE_MODEM_MIN 0 -#define IPA_ROUTE_AP_MIN IPA_ROUTE_MODEM_COUNT -#define IPA_ROUTE_AP_COUNT \ - (IPA_ROUTE_COUNT_MAX - IPA_ROUTE_MODEM_COUNT) - /* Filter or route rules consist of a set of 32-bit values followed by a * 32-bit all-zero rule list terminator. The "zero rule" is simply an * all-zero rule followed by the list terminator. @@ -140,63 +134,25 @@ static void ipa_table_validate_build(void) BUILD_BUG_ON(IPA_ROUTE_COUNT_MAX > 32); /* The modem must be allotted at least one route table entry */ BUILD_BUG_ON(!IPA_ROUTE_MODEM_COUNT); - /* But it can't have more than what is available */ - BUILD_BUG_ON(IPA_ROUTE_MODEM_COUNT > IPA_ROUTE_COUNT_MAX); - + /* AP must too, but we can't use more than what is available */ + BUILD_BUG_ON(IPA_ROUTE_MODEM_COUNT >= IPA_ROUTE_COUNT_MAX); } -static bool -ipa_table_valid_one(struct ipa *ipa, enum ipa_mem_id mem_id, bool route) +static const struct ipa_mem * +ipa_table_mem(struct ipa *ipa, bool filter, bool hashed, bool ipv6) { - const struct ipa_mem *mem = ipa_mem_find(ipa, mem_id); - struct device *dev = &ipa->pdev->dev; - u32 size; - - if (route) - size = IPA_ROUTE_COUNT_MAX * sizeof(__le64); - else - size = (1 + IPA_FILTER_COUNT_MAX) * sizeof(__le64); - - if (!ipa_cmd_table_valid(ipa, mem, route)) - return false; - - /* mem->size >= size is sufficient, but we'll demand more */ - if (mem->size == size) - return true; - - /* Hashed table regions can be zero size if hashing is not supported */ - if (ipa_table_hash_support(ipa) && !mem->size) - return true; - - dev_err(dev, "%s table region %u size 0x%02x, expected 0x%02x\n", - route ? "route" : "filter", mem_id, mem->size, size); - - return false; -} - -/* Verify the filter and route table memory regions are the expected size */ -bool ipa_table_valid(struct ipa *ipa) -{ - bool valid; - - valid = ipa_table_valid_one(ipa, IPA_MEM_V4_FILTER, false); - valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V6_FILTER, false); - valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V4_ROUTE, true); - valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V6_ROUTE, true); - - if (!ipa_table_hash_support(ipa)) - return valid; - - valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V4_FILTER_HASHED, - false); - valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V6_FILTER_HASHED, - false); - valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V4_ROUTE_HASHED, - true); - valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V6_ROUTE_HASHED, - true); - - return valid; + enum ipa_mem_id mem_id; + + mem_id = filter ? hashed ? ipv6 ? IPA_MEM_V6_FILTER_HASHED + : IPA_MEM_V4_FILTER_HASHED + : ipv6 ? IPA_MEM_V6_FILTER + : IPA_MEM_V4_FILTER + : hashed ? ipv6 ? IPA_MEM_V6_ROUTE_HASHED + : IPA_MEM_V4_ROUTE_HASHED + : ipv6 ? IPA_MEM_V6_ROUTE + : IPA_MEM_V4_ROUTE; + + return ipa_mem_find(ipa, mem_id); } bool ipa_filter_map_valid(struct ipa *ipa, u32 filter_map) @@ -342,11 +298,11 @@ static int ipa_route_reset(struct ipa *ipa, bool modem) } if (modem) { - first = IPA_ROUTE_MODEM_MIN; + first = 0; count = IPA_ROUTE_MODEM_COUNT; } else { - first = IPA_ROUTE_AP_MIN; - count = IPA_ROUTE_AP_COUNT; + first = IPA_ROUTE_MODEM_COUNT; + count = IPA_ROUTE_COUNT_MAX - IPA_ROUTE_MODEM_COUNT; } ipa_table_reset_add(trans, false, first, count, IPA_MEM_V4_ROUTE); @@ -561,8 +517,7 @@ static void ipa_filter_config(struct ipa *ipa, bool modem) static bool ipa_route_id_modem(u32 route_id) { - return route_id >= IPA_ROUTE_MODEM_MIN && - route_id <= IPA_ROUTE_MODEM_MIN + IPA_ROUTE_MODEM_COUNT - 1; + return route_id < IPA_ROUTE_MODEM_COUNT; } /** @@ -611,8 +566,81 @@ void ipa_table_config(struct ipa *ipa) ipa_route_config(ipa, true); } -/* - * Initialize a coherent DMA allocation containing initialized filter and +/* Zero modem_route_count means filter table memory check */ +bool ipa_table_mem_valid(struct ipa *ipa, bool modem_route_count) +{ + 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; + u32 count; + + /* IPv4 and IPv6 non-hashed tables are expected to be defined and + * have the same size. Both must have at least two entries (and + * would normally have more than that). + */ + mem_ipv4 = ipa_table_mem(ipa, filter, false, false); + if (!mem_ipv4) + return false; + + mem_ipv6 = ipa_table_mem(ipa, filter, false, true); + if (!mem_ipv6) + return false; + + if (mem_ipv4->size != mem_ipv6->size) + return false; + + /* Table offset and size must fit in TABLE_INIT command fields */ + if (!ipa_cmd_table_init_valid(ipa, mem_ipv4, !filter)) + return false; + + /* Make sure the regions are big enough */ + count = mem_ipv4->size / sizeof(__le64); + if (count < 2) + return false; + if (filter) { + /* Filter tables must able to hold the endpoint bitmap plus + * an entry for each endpoint that supports filtering + */ + if (count < 1 + hweight32(ipa->filter_map)) + return false; + } else { + /* Routing tables must be able to hold all modem entries, + * plus at least one entry for the AP. + */ + if (count < modem_route_count + 1) + return false; + } + + /* If hashing is supported, hashed tables are expected to be defined, + * and have the same size as non-hashed tables. If hashing is not + * supported, hashed tables are expected to have zero size (or not + * be defined). + */ + mem_hashed = ipa_table_mem(ipa, filter, true, false); + if (hash_support) { + if (!mem_hashed || mem_hashed->size != mem_ipv4->size) + return false; + } else { + if (mem_hashed && mem_hashed->size) + return false; + } + + /* Same check for IPv6 tables */ + mem_hashed = ipa_table_mem(ipa, filter, true, true); + if (hash_support) { + if (!mem_hashed || mem_hashed->size != mem_ipv6->size) + return false; + } else { + if (mem_hashed && mem_hashed->size) + return false; + } + + return true; +} + +/* Initialize a coherent DMA allocation containing initialized filter and * route table data. This is used when initializing or resetting the IPA * filter or route table. * diff --git a/drivers/net/ipa/ipa_table.h b/drivers/net/ipa/ipa_table.h index 395189f75d78..65d96debd391 100644 --- a/drivers/net/ipa/ipa_table.h +++ b/drivers/net/ipa/ipa_table.h @@ -20,14 +20,6 @@ struct ipa; #define IPA_ROUTE_COUNT_MAX 15 /** - * ipa_table_valid() - Validate route and filter table memory regions - * @ipa: IPA pointer - * - * Return: true if all regions are valid, false otherwise - */ -bool ipa_table_valid(struct ipa *ipa); - -/** * ipa_filter_map_valid() - Validate a filter table endpoint bitmap * @ipa: IPA pointer * @filter_mask: Filter table endpoint bitmap to check @@ -86,4 +78,11 @@ int ipa_table_init(struct ipa *ipa); */ 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 + */ +bool ipa_table_mem_valid(struct ipa *ipa, bool modem_route_count); + #endif /* _IPA_TABLE_H_ */ |