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661 lines
20 KiB
661 lines
20 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. |
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* Copyright (C) 2018-2021 Linaro Ltd. |
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*/ |
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#include <linux/types.h> |
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#include <linux/kernel.h> |
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#include <linux/bits.h> |
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#include <linux/bitops.h> |
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#include <linux/bitfield.h> |
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#include <linux/io.h> |
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#include <linux/build_bug.h> |
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#include <linux/device.h> |
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#include <linux/dma-mapping.h> |
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#include "ipa.h" |
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#include "ipa_version.h" |
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#include "ipa_endpoint.h" |
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#include "ipa_table.h" |
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#include "ipa_reg.h" |
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#include "ipa_mem.h" |
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#include "ipa_cmd.h" |
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#include "gsi.h" |
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#include "gsi_trans.h" |
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/** |
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* DOC: IPA Filter and Route Tables |
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* |
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* The IPA has tables defined in its local (IPA-resident) memory that define |
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* filter and routing rules. An entry in either of these tables is a little |
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* endian 64-bit "slot" that holds the address of a rule definition. (The |
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* size of these slots is 64 bits regardless of the host DMA address size.) |
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* |
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* Separate tables (both filter and route) used for IPv4 and IPv6. There |
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* are normally another set of "hashed" filter and route tables, which are |
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* used with a hash of message metadata. Hashed operation is not supported |
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* by all IPA hardware (IPA v4.2 doesn't support hashed tables). |
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* |
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* Rules can be in local memory or in DRAM (system memory). The offset of |
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* an object (such as a route or filter table) in IPA-resident memory must |
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* 128-byte aligned. An object in system memory (such as a route or filter |
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* rule) must be at an 8-byte aligned address. We currently only place |
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* route or filter rules in system memory. |
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* |
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* A rule consists of a contiguous block of 32-bit values terminated with |
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* 32 zero bits. A special "zero entry" rule consisting of 64 zero bits |
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* represents "no filtering" or "no routing," and is the reset value for |
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* filter or route table rules. |
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* |
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* Each filter rule is associated with an AP or modem TX endpoint, though |
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* not all TX endpoints support filtering. The first 64-bit slot in a |
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* filter table is a bitmap indicating which endpoints have entries in |
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* the table. The low-order bit (bit 0) in this bitmap represents a |
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* special global filter, which applies to all traffic. This is not |
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* used in the current code. Bit 1, if set, indicates that there is an |
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* entry (i.e. slot containing a system address referring to a rule) for |
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* endpoint 0 in the table. Bit 3, if set, indicates there is an entry |
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* for endpoint 2, and so on. Space is set aside in IPA local memory to |
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* hold as many filter table entries as might be required, but typically |
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* they are not all used. |
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* |
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* The AP initializes all entries in a filter table to refer to a "zero" |
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* entry. Once initialized the modem and AP update the entries for |
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* endpoints they "own" directly. Currently the AP does not use the |
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* IPA filtering functionality. |
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* |
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* IPA Filter Table |
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* ---------------------- |
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* endpoint bitmap | 0x0000000000000048 | Bits 3 and 6 set (endpoints 2 and 5) |
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* |--------------------| |
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* 1st endpoint | 0x000123456789abc0 | DMA address for modem endpoint 2 rule |
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* |--------------------| |
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* 2nd endpoint | 0x000123456789abf0 | DMA address for AP endpoint 5 rule |
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* |--------------------| |
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* (unused) | | (Unused space in filter table) |
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* |--------------------| |
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* . . . |
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* |--------------------| |
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* (unused) | | (Unused space in filter table) |
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* ---------------------- |
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* |
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* The set of available route rules is divided about equally between the AP |
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* and modem. The AP initializes all entries in a route table to refer to |
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* a "zero entry". Once initialized, the modem and AP are responsible for |
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* updating their own entries. All entries in a route table are usable, |
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* though the AP currently does not use the IPA routing functionality. |
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* |
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* IPA Route Table |
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* ---------------------- |
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* 1st modem route | 0x0001234500001100 | DMA address for first route rule |
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* |--------------------| |
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* 2nd modem route | 0x0001234500001140 | DMA address for second route rule |
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* |--------------------| |
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* . . . |
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* |--------------------| |
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* Last modem route| 0x0001234500002280 | DMA address for Nth route rule |
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* |--------------------| |
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* 1st AP route | 0x0001234500001100 | DMA address for route rule (N+1) |
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* |--------------------| |
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* 2nd AP route | 0x0001234500001140 | DMA address for next route rule |
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* |--------------------| |
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* . . . |
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* |--------------------| |
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* Last AP route | 0x0001234500002280 | DMA address for last route rule |
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* ---------------------- |
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*/ |
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/* Assignment of route table entries to the modem and AP */ |
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#define IPA_ROUTE_MODEM_MIN 0 |
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#define IPA_ROUTE_MODEM_COUNT 8 |
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#define IPA_ROUTE_AP_MIN IPA_ROUTE_MODEM_COUNT |
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#define IPA_ROUTE_AP_COUNT \ |
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(IPA_ROUTE_COUNT_MAX - IPA_ROUTE_MODEM_COUNT) |
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/* Filter or route rules consist of a set of 32-bit values followed by a |
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* 32-bit all-zero rule list terminator. The "zero rule" is simply an |
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* all-zero rule followed by the list terminator. |
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*/ |
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#define IPA_ZERO_RULE_SIZE (2 * sizeof(__le32)) |
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/* Check things that can be validated at build time. */ |
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static void ipa_table_validate_build(void) |
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{ |
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/* Filter and route tables contain DMA addresses that refer |
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* to filter or route rules. But the size of a table entry |
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* is 64 bits regardless of what the size of an AP DMA address |
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* is. A fixed constant defines the size of an entry, and |
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* code in ipa_table_init() uses a pointer to __le64 to |
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* initialize tables. |
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*/ |
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BUILD_BUG_ON(sizeof(dma_addr_t) > sizeof(__le64)); |
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/* A "zero rule" is used to represent no filtering or no routing. |
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* It is a 64-bit block of zeroed memory. Code in ipa_table_init() |
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* assumes that it can be written using a pointer to __le64. |
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*/ |
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BUILD_BUG_ON(IPA_ZERO_RULE_SIZE != sizeof(__le64)); |
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/* Impose a practical limit on the number of routes */ |
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BUILD_BUG_ON(IPA_ROUTE_COUNT_MAX > 32); |
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/* The modem must be allotted at least one route table entry */ |
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BUILD_BUG_ON(!IPA_ROUTE_MODEM_COUNT); |
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/* But it can't have more than what is available */ |
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BUILD_BUG_ON(IPA_ROUTE_MODEM_COUNT > IPA_ROUTE_COUNT_MAX); |
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} |
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static bool |
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ipa_table_valid_one(struct ipa *ipa, enum ipa_mem_id mem_id, bool route) |
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{ |
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const struct ipa_mem *mem = ipa_mem_find(ipa, mem_id); |
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struct device *dev = &ipa->pdev->dev; |
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u32 size; |
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if (route) |
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size = IPA_ROUTE_COUNT_MAX * sizeof(__le64); |
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else |
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size = (1 + IPA_FILTER_COUNT_MAX) * sizeof(__le64); |
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if (!ipa_cmd_table_valid(ipa, mem, route)) |
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return false; |
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/* mem->size >= size is sufficient, but we'll demand more */ |
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if (mem->size == size) |
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return true; |
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/* Hashed table regions can be zero size if hashing is not supported */ |
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if (ipa_table_hash_support(ipa) && !mem->size) |
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return true; |
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dev_err(dev, "%s table region %u size 0x%02x, expected 0x%02x\n", |
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route ? "route" : "filter", mem_id, mem->size, size); |
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return false; |
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} |
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/* Verify the filter and route table memory regions are the expected size */ |
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bool ipa_table_valid(struct ipa *ipa) |
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{ |
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bool valid; |
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valid = ipa_table_valid_one(ipa, IPA_MEM_V4_FILTER, false); |
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valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V6_FILTER, false); |
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valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V4_ROUTE, true); |
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valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V6_ROUTE, true); |
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if (!ipa_table_hash_support(ipa)) |
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return valid; |
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valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V4_FILTER_HASHED, |
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false); |
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valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V6_FILTER_HASHED, |
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false); |
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valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V4_ROUTE_HASHED, |
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true); |
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valid = valid && ipa_table_valid_one(ipa, IPA_MEM_V6_ROUTE_HASHED, |
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true); |
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return valid; |
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} |
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bool ipa_filter_map_valid(struct ipa *ipa, u32 filter_map) |
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{ |
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struct device *dev = &ipa->pdev->dev; |
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u32 count; |
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if (!filter_map) { |
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dev_err(dev, "at least one filtering endpoint is required\n"); |
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return false; |
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} |
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count = hweight32(filter_map); |
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if (count > IPA_FILTER_COUNT_MAX) { |
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dev_err(dev, "too many filtering endpoints (%u, max %u)\n", |
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count, IPA_FILTER_COUNT_MAX); |
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return false; |
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} |
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return true; |
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} |
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/* Zero entry count means no table, so just return a 0 address */ |
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static dma_addr_t ipa_table_addr(struct ipa *ipa, bool filter_mask, u16 count) |
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{ |
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u32 skip; |
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if (!count) |
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return 0; |
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WARN_ON(count > max_t(u32, IPA_FILTER_COUNT_MAX, IPA_ROUTE_COUNT_MAX)); |
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/* Skip over the zero rule and possibly the filter mask */ |
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skip = filter_mask ? 1 : 2; |
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return ipa->table_addr + skip * sizeof(*ipa->table_virt); |
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} |
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static void ipa_table_reset_add(struct gsi_trans *trans, bool filter, |
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u16 first, u16 count, enum ipa_mem_id mem_id) |
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{ |
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struct ipa *ipa = container_of(trans->gsi, struct ipa, gsi); |
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const struct ipa_mem *mem = ipa_mem_find(ipa, mem_id); |
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dma_addr_t addr; |
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u32 offset; |
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u16 size; |
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/* Nothing to do if the table memory region is empty */ |
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if (!mem->size) |
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return; |
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if (filter) |
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first++; /* skip over bitmap */ |
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offset = mem->offset + first * sizeof(__le64); |
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size = count * sizeof(__le64); |
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addr = ipa_table_addr(ipa, false, count); |
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ipa_cmd_dma_shared_mem_add(trans, offset, size, addr, true); |
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} |
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/* Reset entries in a single filter table belonging to either the AP or |
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* modem to refer to the zero entry. The memory region supplied will be |
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* for the IPv4 and IPv6 non-hashed and hashed filter tables. |
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*/ |
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static int |
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ipa_filter_reset_table(struct ipa *ipa, enum ipa_mem_id mem_id, bool modem) |
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{ |
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u32 ep_mask = ipa->filter_map; |
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u32 count = hweight32(ep_mask); |
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struct gsi_trans *trans; |
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enum gsi_ee_id ee_id; |
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trans = ipa_cmd_trans_alloc(ipa, count); |
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if (!trans) { |
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dev_err(&ipa->pdev->dev, |
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"no transaction for %s filter reset\n", |
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modem ? "modem" : "AP"); |
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return -EBUSY; |
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} |
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ee_id = modem ? GSI_EE_MODEM : GSI_EE_AP; |
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while (ep_mask) { |
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u32 endpoint_id = __ffs(ep_mask); |
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struct ipa_endpoint *endpoint; |
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ep_mask ^= BIT(endpoint_id); |
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endpoint = &ipa->endpoint[endpoint_id]; |
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if (endpoint->ee_id != ee_id) |
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continue; |
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ipa_table_reset_add(trans, true, endpoint_id, 1, mem_id); |
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} |
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gsi_trans_commit_wait(trans); |
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return 0; |
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} |
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/* Theoretically, each filter table could have more filter slots to |
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* update than the maximum number of commands in a transaction. So |
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* we do each table separately. |
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*/ |
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static int ipa_filter_reset(struct ipa *ipa, bool modem) |
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{ |
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int ret; |
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ret = ipa_filter_reset_table(ipa, IPA_MEM_V4_FILTER, modem); |
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if (ret) |
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return ret; |
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ret = ipa_filter_reset_table(ipa, IPA_MEM_V4_FILTER_HASHED, modem); |
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if (ret) |
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return ret; |
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ret = ipa_filter_reset_table(ipa, IPA_MEM_V6_FILTER, modem); |
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if (ret) |
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return ret; |
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ret = ipa_filter_reset_table(ipa, IPA_MEM_V6_FILTER_HASHED, modem); |
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return ret; |
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} |
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/* The AP routes and modem routes are each contiguous within the |
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* table. We can update each table with a single command, and we |
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* won't exceed the per-transaction command limit. |
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* */ |
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static int ipa_route_reset(struct ipa *ipa, bool modem) |
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{ |
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struct gsi_trans *trans; |
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u16 first; |
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u16 count; |
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trans = ipa_cmd_trans_alloc(ipa, 4); |
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if (!trans) { |
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dev_err(&ipa->pdev->dev, |
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"no transaction for %s route reset\n", |
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modem ? "modem" : "AP"); |
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return -EBUSY; |
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} |
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if (modem) { |
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first = IPA_ROUTE_MODEM_MIN; |
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count = IPA_ROUTE_MODEM_COUNT; |
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} else { |
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first = IPA_ROUTE_AP_MIN; |
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count = IPA_ROUTE_AP_COUNT; |
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} |
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ipa_table_reset_add(trans, false, first, count, IPA_MEM_V4_ROUTE); |
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ipa_table_reset_add(trans, false, first, count, |
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IPA_MEM_V4_ROUTE_HASHED); |
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ipa_table_reset_add(trans, false, first, count, IPA_MEM_V6_ROUTE); |
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ipa_table_reset_add(trans, false, first, count, |
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IPA_MEM_V6_ROUTE_HASHED); |
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gsi_trans_commit_wait(trans); |
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return 0; |
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} |
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void ipa_table_reset(struct ipa *ipa, bool modem) |
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{ |
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struct device *dev = &ipa->pdev->dev; |
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const char *ee_name; |
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int ret; |
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ee_name = modem ? "modem" : "AP"; |
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/* Report errors, but reset filter and route tables */ |
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ret = ipa_filter_reset(ipa, modem); |
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if (ret) |
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dev_err(dev, "error %d resetting filter table for %s\n", |
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ret, ee_name); |
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ret = ipa_route_reset(ipa, modem); |
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if (ret) |
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dev_err(dev, "error %d resetting route table for %s\n", |
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ret, ee_name); |
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} |
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int ipa_table_hash_flush(struct ipa *ipa) |
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{ |
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u32 offset = ipa_reg_filt_rout_hash_flush_offset(ipa->version); |
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struct gsi_trans *trans; |
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u32 val; |
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if (!ipa_table_hash_support(ipa)) |
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return 0; |
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trans = ipa_cmd_trans_alloc(ipa, 1); |
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if (!trans) { |
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dev_err(&ipa->pdev->dev, "no transaction for hash flush\n"); |
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return -EBUSY; |
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} |
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val = IPV4_FILTER_HASH_FMASK | IPV6_FILTER_HASH_FMASK; |
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val |= IPV6_ROUTER_HASH_FMASK | IPV4_ROUTER_HASH_FMASK; |
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ipa_cmd_register_write_add(trans, offset, val, val, false); |
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gsi_trans_commit_wait(trans); |
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return 0; |
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} |
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static void ipa_table_init_add(struct gsi_trans *trans, bool filter, |
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enum ipa_cmd_opcode opcode, |
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enum ipa_mem_id mem_id, |
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enum ipa_mem_id hash_mem_id) |
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{ |
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struct ipa *ipa = container_of(trans->gsi, struct ipa, gsi); |
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const struct ipa_mem *hash_mem = ipa_mem_find(ipa, hash_mem_id); |
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const struct ipa_mem *mem = ipa_mem_find(ipa, mem_id); |
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dma_addr_t hash_addr; |
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dma_addr_t addr; |
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u16 hash_count; |
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u16 hash_size; |
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u16 count; |
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u16 size; |
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/* The number of filtering endpoints determines number of entries |
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* in the filter table. The hashed and non-hashed filter table |
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* will have the same number of entries. The size of the route |
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* table region determines the number of entries it has. |
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*/ |
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if (filter) { |
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/* Include one extra "slot" to hold the filter map itself */ |
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count = 1 + hweight32(ipa->filter_map); |
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hash_count = hash_mem->size ? count : 0; |
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} else { |
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count = mem->size / sizeof(__le64); |
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hash_count = hash_mem->size / sizeof(__le64); |
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} |
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size = count * sizeof(__le64); |
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hash_size = hash_count * sizeof(__le64); |
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addr = ipa_table_addr(ipa, filter, count); |
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hash_addr = ipa_table_addr(ipa, filter, hash_count); |
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ipa_cmd_table_init_add(trans, opcode, size, mem->offset, addr, |
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hash_size, hash_mem->offset, hash_addr); |
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} |
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int ipa_table_setup(struct ipa *ipa) |
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{ |
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struct gsi_trans *trans; |
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trans = ipa_cmd_trans_alloc(ipa, 4); |
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if (!trans) { |
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dev_err(&ipa->pdev->dev, "no transaction for table setup\n"); |
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return -EBUSY; |
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} |
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ipa_table_init_add(trans, false, IPA_CMD_IP_V4_ROUTING_INIT, |
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IPA_MEM_V4_ROUTE, IPA_MEM_V4_ROUTE_HASHED); |
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ipa_table_init_add(trans, false, IPA_CMD_IP_V6_ROUTING_INIT, |
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IPA_MEM_V6_ROUTE, IPA_MEM_V6_ROUTE_HASHED); |
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ipa_table_init_add(trans, true, IPA_CMD_IP_V4_FILTER_INIT, |
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IPA_MEM_V4_FILTER, IPA_MEM_V4_FILTER_HASHED); |
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ipa_table_init_add(trans, true, IPA_CMD_IP_V6_FILTER_INIT, |
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IPA_MEM_V6_FILTER, IPA_MEM_V6_FILTER_HASHED); |
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gsi_trans_commit_wait(trans); |
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return 0; |
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} |
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/** |
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* ipa_filter_tuple_zero() - Zero an endpoint's hashed filter tuple |
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* @endpoint: Endpoint whose filter hash tuple should be zeroed |
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* |
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* Endpoint must be for the AP (not modem) and support filtering. Updates |
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* the filter hash values without changing route ones. |
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*/ |
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static void ipa_filter_tuple_zero(struct ipa_endpoint *endpoint) |
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{ |
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u32 endpoint_id = endpoint->endpoint_id; |
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u32 offset; |
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u32 val; |
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offset = IPA_REG_ENDP_FILTER_ROUTER_HSH_CFG_N_OFFSET(endpoint_id); |
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val = ioread32(endpoint->ipa->reg_virt + offset); |
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/* Zero all filter-related fields, preserving the rest */ |
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u32p_replace_bits(&val, 0, IPA_REG_ENDP_FILTER_HASH_MSK_ALL); |
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iowrite32(val, endpoint->ipa->reg_virt + offset); |
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} |
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/* Configure a hashed filter table; there is no ipa_filter_deconfig() */ |
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static void ipa_filter_config(struct ipa *ipa, bool modem) |
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{ |
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enum gsi_ee_id ee_id = modem ? GSI_EE_MODEM : GSI_EE_AP; |
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u32 ep_mask = ipa->filter_map; |
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if (!ipa_table_hash_support(ipa)) |
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return; |
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while (ep_mask) { |
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u32 endpoint_id = __ffs(ep_mask); |
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struct ipa_endpoint *endpoint; |
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ep_mask ^= BIT(endpoint_id); |
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endpoint = &ipa->endpoint[endpoint_id]; |
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if (endpoint->ee_id == ee_id) |
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ipa_filter_tuple_zero(endpoint); |
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} |
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} |
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static bool ipa_route_id_modem(u32 route_id) |
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{ |
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return route_id >= IPA_ROUTE_MODEM_MIN && |
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route_id <= IPA_ROUTE_MODEM_MIN + IPA_ROUTE_MODEM_COUNT - 1; |
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} |
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|
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/** |
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* ipa_route_tuple_zero() - Zero a hashed route table entry tuple |
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* @ipa: IPA pointer |
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* @route_id: Route table entry whose hash tuple should be zeroed |
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* |
|
* Updates the route hash values without changing filter ones. |
|
*/ |
|
static void ipa_route_tuple_zero(struct ipa *ipa, u32 route_id) |
|
{ |
|
u32 offset = IPA_REG_ENDP_FILTER_ROUTER_HSH_CFG_N_OFFSET(route_id); |
|
u32 val; |
|
|
|
val = ioread32(ipa->reg_virt + offset); |
|
|
|
/* Zero all route-related fields, preserving the rest */ |
|
u32p_replace_bits(&val, 0, IPA_REG_ENDP_ROUTER_HASH_MSK_ALL); |
|
|
|
iowrite32(val, ipa->reg_virt + offset); |
|
} |
|
|
|
/* Configure a hashed route table; there is no ipa_route_deconfig() */ |
|
static void ipa_route_config(struct ipa *ipa, bool modem) |
|
{ |
|
u32 route_id; |
|
|
|
if (!ipa_table_hash_support(ipa)) |
|
return; |
|
|
|
for (route_id = 0; route_id < IPA_ROUTE_COUNT_MAX; route_id++) |
|
if (ipa_route_id_modem(route_id) == modem) |
|
ipa_route_tuple_zero(ipa, route_id); |
|
} |
|
|
|
/* Configure a filter and route tables; there is no ipa_table_deconfig() */ |
|
void ipa_table_config(struct ipa *ipa) |
|
{ |
|
ipa_filter_config(ipa, false); |
|
ipa_filter_config(ipa, true); |
|
ipa_route_config(ipa, false); |
|
ipa_route_config(ipa, 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. |
|
* |
|
* The first entry in a filter table contains a bitmap indicating which |
|
* endpoints contain entries in the table. In addition to that first entry, |
|
* there are at most IPA_FILTER_COUNT_MAX entries that follow. Filter table |
|
* entries are 64 bits wide, and (other than the bitmap) contain the DMA |
|
* address of a filter rule. A "zero rule" indicates no filtering, and |
|
* consists of 64 bits of zeroes. When a filter table is initialized (or |
|
* reset) its entries are made to refer to the zero rule. |
|
* |
|
* Each entry in a route table is the DMA address of a routing rule. For |
|
* routing there is also a 64-bit "zero rule" that means no routing, and |
|
* when a route table is initialized or reset, its entries are made to refer |
|
* to the zero rule. The zero rule is shared for route and filter tables. |
|
* |
|
* Note that the IPA hardware requires a filter or route rule address to be |
|
* aligned on a 128 byte boundary. The coherent DMA buffer we allocate here |
|
* has a minimum alignment, and we place the zero rule at the base of that |
|
* allocated space. In ipa_table_init() we verify the minimum DMA allocation |
|
* meets our requirement. |
|
* |
|
* +-------------------+ |
|
* --> | zero rule | |
|
* / |-------------------| |
|
* | | filter mask | |
|
* |\ |-------------------| |
|
* | ---- zero rule address | \ |
|
* |\ |-------------------| | |
|
* | ---- zero rule address | | IPA_FILTER_COUNT_MAX |
|
* | |-------------------| > or IPA_ROUTE_COUNT_MAX, |
|
* | ... | whichever is greater |
|
* \ |-------------------| | |
|
* ---- zero rule address | / |
|
* +-------------------+ |
|
*/ |
|
int ipa_table_init(struct ipa *ipa) |
|
{ |
|
u32 count = max_t(u32, IPA_FILTER_COUNT_MAX, IPA_ROUTE_COUNT_MAX); |
|
struct device *dev = &ipa->pdev->dev; |
|
dma_addr_t addr; |
|
__le64 le_addr; |
|
__le64 *virt; |
|
size_t size; |
|
|
|
ipa_table_validate_build(); |
|
|
|
/* The IPA hardware requires route and filter table rules to be |
|
* aligned on a 128-byte boundary. We put the "zero rule" at the |
|
* base of the table area allocated here. The DMA address returned |
|
* by dma_alloc_coherent() is guaranteed to be a power-of-2 number |
|
* of pages, which satisfies the rule alignment requirement. |
|
*/ |
|
size = IPA_ZERO_RULE_SIZE + (1 + count) * sizeof(__le64); |
|
virt = dma_alloc_coherent(dev, size, &addr, GFP_KERNEL); |
|
if (!virt) |
|
return -ENOMEM; |
|
|
|
ipa->table_virt = virt; |
|
ipa->table_addr = addr; |
|
|
|
/* First slot is the zero rule */ |
|
*virt++ = 0; |
|
|
|
/* Next is the filter table bitmap. The "soft" bitmap value |
|
* must be converted to the hardware representation by shifting |
|
* it left one position. (Bit 0 repesents global filtering, |
|
* which is possible but not used.) |
|
*/ |
|
*virt++ = cpu_to_le64((u64)ipa->filter_map << 1); |
|
|
|
/* All the rest contain the DMA address of the zero rule */ |
|
le_addr = cpu_to_le64(addr); |
|
while (count--) |
|
*virt++ = le_addr; |
|
|
|
return 0; |
|
} |
|
|
|
void ipa_table_exit(struct ipa *ipa) |
|
{ |
|
u32 count = max_t(u32, 1 + IPA_FILTER_COUNT_MAX, IPA_ROUTE_COUNT_MAX); |
|
struct device *dev = &ipa->pdev->dev; |
|
size_t size; |
|
|
|
size = IPA_ZERO_RULE_SIZE + (1 + count) * sizeof(__le64); |
|
|
|
dma_free_coherent(dev, size, ipa->table_virt, ipa->table_addr); |
|
ipa->table_addr = 0; |
|
ipa->table_virt = NULL; |
|
}
|
|
|