new file mode 100644
@@ -0,0 +1,30 @@
+config IPA
+ tristate "Qualcomm IPA support"
+ depends on NET
+ select QCOM_QMI_HELPERS
+ select QCOM_MDT_LOADER
+ default n
+ help
+ Choose Y here to include support for the Qualcomm IP
+ Accelerator (IPA), a hardware block present in some
+ Qualcomm SoCs. The IPA is a programmable protocol
+ processor that is capable of generic hardware handling
+ of IP packets, including routing, filtering, and NAT.
+ Currently the IPA driver supports only basic transport
+ of network traffic between the AP and modem, on the
+ Qualcomm SDM845 SoC.
+
+ If unsure, say N.
+
+config IPA_ASSERT
+ bool "Enable IPA assertions"
+ depends on IPA
+ default y
+ help
+ Incorporate IPA assertion verification in the build. This
+ cause various design assumptions to be checked at runtime,
+ generating a report (and a crash) if any assumed condition
+ does not hold. You may wish to disable this to avoid the
+ overhead of checking.
+
+ If unsure doubt, say "Y" here.
new file mode 100644
@@ -0,0 +1,7 @@
+obj-$(CONFIG_IPA) += ipa.o
+
+ipa-y := ipa_main.o ipa_dp.o \
+ ipa_utils.o ipa_interrupts.o \
+ ipa_uc.o gsi.o rmnet_ipa.o \
+ ipa_qmi.o ipa_qmi_msg.o \
+ ipahal.o ipa_reg.o ipa_dma.o
new file mode 100644
@@ -0,0 +1,573 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2018 Linaro Ltd.
+ */
+#ifndef _IPA_I_H_
+#define _IPA_I_H_
+
+#include <linux/types.h>
+#include <linux/sizes.h>
+#include <linux/bug.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/device.h>
+#include <linux/workqueue.h>
+#include <linux/interconnect.h>
+#include <linux/pm_wakeup.h>
+#include <linux/skbuff.h>
+
+#include "ipa_dma.h"
+#include "ipa_reg.h"
+#include "gsi.h"
+
+#define IPA_MTU 1500
+
+#define IPA_EP_COUNT_MAX 31
+#define IPA_LAN_RX_HEADER_LENGTH 0
+#define IPA_DL_CHECKSUM_LENGTH 8
+#define IPA_GENERIC_RX_POOL_SZ 192
+
+#define IPA_GENERIC_AGGR_BYTE_LIMIT (6 * SZ_1K) /* bytes */
+#define IPA_GENERIC_AGGR_TIME_LIMIT 1 /* milliseconds */
+#define IPA_GENERIC_AGGR_PKT_LIMIT 0
+
+#define IPA_MAX_STATUS_STAT_NUM 30
+
+/* An explicitly bad endpoint identifier value */
+#define IPA_EP_ID_BAD (~(u32)0)
+
+#define IPA_MEM_CANARY_VAL 0xdeadbeef
+
+#define IPA_GSI_CHANNEL_STOP_MAX_RETRY 10
+#define IPA_GSI_CHANNEL_STOP_PKT_SIZE 1
+
+/**
+ * DOC:
+ * The IPA has a block of shared memory, divided into regions used for
+ * specific purposes. Values below define this layout (i.e., the
+ * sizes and locations of all these regions). One or two "canary"
+ * values sit between some regions, as a check for erroneous writes
+ * outside a region. There are combinations of and routing tables,
+ * covering IPv4 and IPv6, and for each of those, hashed and
+ * non-hashed variants. About half of routing table entries are
+ * reserved for modem use.
+ */
+
+/* The maximum number of filter table entries (IPv4, IPv6; hashed and not) */
+#define IPA_MEM_FLT_COUNT 14
+
+/* The number of routing table entries (IPv4, IPv6; hashed and not) */
+#define IPA_MEM_RT_COUNT 15
+
+ /* Which routing table entries are for the modem */
+#define IPA_MEM_MODEM_RT_COUNT 8
+#define IPA_MEM_MODEM_RT_INDEX_MIN 0
+#define IPA_MEM_MODEM_RT_INDEX_MAX \
+ (IPA_MEM_MODEM_RT_INDEX_MIN + IPA_MEM_MODEM_RT_COUNT - 1)
+
+#define IPA_MEM_V4_FLT_HASH_OFST 0x288
+#define IPA_MEM_V4_FLT_NHASH_OFST 0x308
+#define IPA_MEM_V6_FLT_HASH_OFST 0x388
+#define IPA_MEM_V6_FLT_NHASH_OFST 0x408
+#define IPA_MEM_V4_RT_HASH_OFST 0x488
+#define IPA_MEM_V4_RT_NHASH_OFST 0x508
+#define IPA_MEM_V6_RT_HASH_OFST 0x588
+#define IPA_MEM_V6_RT_NHASH_OFST 0x608
+#define IPA_MEM_MODEM_HDR_OFST 0x688
+#define IPA_MEM_MODEM_HDR_SIZE 0x140
+#define IPA_MEM_APPS_HDR_OFST 0x7c8
+#define IPA_MEM_APPS_HDR_SIZE 0x0
+#define IPA_MEM_MODEM_HDR_PROC_CTX_OFST 0x7d0
+#define IPA_MEM_MODEM_HDR_PROC_CTX_SIZE 0x200
+#define IPA_MEM_APPS_HDR_PROC_CTX_OFST 0x9d0
+#define IPA_MEM_APPS_HDR_PROC_CTX_SIZE 0x200
+#define IPA_MEM_MODEM_OFST 0xbd8
+#define IPA_MEM_MODEM_SIZE 0x1024
+#define IPA_MEM_END_OFST 0x2000
+#define IPA_MEM_UC_EVENT_RING_OFST 0x1c00 /* v3.5 and later */
+
+#define ipa_debug(fmt, args...) dev_dbg(ipa_ctx->dev, fmt, ## args)
+#define ipa_err(fmt, args...) dev_err(ipa_ctx->dev, fmt, ## args)
+
+#define ipa_bug() \
+ do { \
+ ipa_err("an unrecoverable error has occurred\n"); \
+ BUG(); \
+ } while (0)
+
+#define ipa_bug_on(condition) \
+ do { \
+ if (condition) { \
+ ipa_err("ipa_bug_on(%s) failed!\n", #condition); \
+ ipa_bug(); \
+ } \
+ } while (0)
+
+#ifdef CONFIG_IPA_ASSERT
+
+/* Communicate a condition assumed by the code. This is intended as
+ * an informative statement about something that should always be true.
+ *
+ * N.B.: Conditions asserted must not incorporate code with side-effects
+ * that are necessary for correct execution. And an assertion
+ * failure should not be expected to force a crash (because all
+ * assertion code is optionally compiled out).
+ */
+#define ipa_assert(cond) \
+ do { \
+ if (!(cond)) { \
+ ipa_err("ipa_assert(%s) failed!\n", #cond); \
+ ipa_bug(); \
+ } \
+ } while (0)
+#else /* !CONFIG_IPA_ASSERT */
+
+#define ipa_assert(expr) ((void)0)
+
+#endif /* !CONFIG_IPA_ASSERT */
+
+enum ipa_ees {
+ IPA_EE_AP = 0,
+ IPA_EE_Q6 = 1,
+ IPA_EE_UC = 2,
+};
+
+/**
+ * enum ipa_client_type - names for the various IPA "clients"
+ *
+ * These are from the perspective of the clients, e.g. HSIC1_PROD
+ * means HSIC client is the producer and IPA is the consumer.
+ * PROD clients are always even, and CONS clients are always odd.
+ */
+enum ipa_client_type {
+ IPA_CLIENT_WLAN1_PROD = 10,
+ IPA_CLIENT_WLAN1_CONS = 11,
+
+ IPA_CLIENT_WLAN2_CONS = 13,
+
+ IPA_CLIENT_WLAN3_CONS = 15,
+
+ IPA_CLIENT_USB_PROD = 18,
+ IPA_CLIENT_USB_CONS = 19,
+
+ IPA_CLIENT_USB_DPL_CONS = 27,
+
+ IPA_CLIENT_APPS_LAN_PROD = 32,
+ IPA_CLIENT_APPS_LAN_CONS = 33,
+
+ IPA_CLIENT_APPS_WAN_PROD = 34,
+ IPA_CLIENT_APPS_WAN_CONS = 35,
+
+ IPA_CLIENT_APPS_CMD_PROD = 36,
+
+ IPA_CLIENT_Q6_LAN_PROD = 50,
+ IPA_CLIENT_Q6_LAN_CONS = 51,
+
+ IPA_CLIENT_Q6_WAN_PROD = 52,
+ IPA_CLIENT_Q6_WAN_CONS = 53,
+
+ IPA_CLIENT_Q6_CMD_PROD = 54,
+
+ IPA_CLIENT_TEST_PROD = 62,
+ IPA_CLIENT_TEST_CONS = 63,
+
+ IPA_CLIENT_TEST1_PROD = 64,
+ IPA_CLIENT_TEST1_CONS = 65,
+
+ IPA_CLIENT_TEST2_PROD = 66,
+ IPA_CLIENT_TEST2_CONS = 67,
+
+ IPA_CLIENT_TEST3_PROD = 68,
+ IPA_CLIENT_TEST3_CONS = 69,
+
+ IPA_CLIENT_TEST4_PROD = 70,
+ IPA_CLIENT_TEST4_CONS = 71,
+
+ IPA_CLIENT_DUMMY_CONS = 73,
+
+ IPA_CLIENT_MAX,
+};
+
+static inline bool ipa_producer(enum ipa_client_type client)
+{
+ return !((u32)client & 1); /* Even numbers are producers */
+}
+
+static inline bool ipa_consumer(enum ipa_client_type client)
+{
+ return !ipa_producer(client);
+}
+
+static inline bool ipa_modem_consumer(enum ipa_client_type client)
+{
+ return client == IPA_CLIENT_Q6_LAN_CONS ||
+ client == IPA_CLIENT_Q6_WAN_CONS;
+}
+
+static inline bool ipa_modem_producer(enum ipa_client_type client)
+{
+ return client == IPA_CLIENT_Q6_LAN_PROD ||
+ client == IPA_CLIENT_Q6_WAN_PROD ||
+ client == IPA_CLIENT_Q6_CMD_PROD;
+}
+
+static inline bool ipa_ap_consumer(enum ipa_client_type client)
+{
+ return client == IPA_CLIENT_APPS_LAN_CONS ||
+ client == IPA_CLIENT_APPS_WAN_CONS;
+}
+
+/**
+ * enum ipa_irq_type - IPA Interrupt Type
+ *
+ * Used to register handlers for IPA interrupts.
+ */
+enum ipa_irq_type {
+ IPA_INVALID_IRQ = 0,
+ IPA_UC_IRQ_0,
+ IPA_UC_IRQ_1,
+ IPA_TX_SUSPEND_IRQ,
+ IPA_IRQ_MAX
+};
+
+/**
+ * typedef ipa_irq_handler_t - irq handler/callback type
+ * @param ipa_irq_type - interrupt type
+ * @param interrupt_data - interrupt information data
+ *
+ * Callback function registered by ipa_add_interrupt_handler() to
+ * handle a specific interrupt type
+ */
+typedef void (*ipa_irq_handler_t)(enum ipa_irq_type interrupt,
+ u32 interrupt_data);
+
+/**
+ * struct ipa_tx_suspend_irq_data - Interrupt data for IPA_TX_SUSPEND_IRQ
+ * @endpoints: Bitmask of endpoints which cause IPA_TX_SUSPEND_IRQ interrupt
+ */
+struct ipa_tx_suspend_irq_data {
+ u32 endpoints;
+};
+
+/**
+ * enum ipa_dp_evt_type - Data path event type
+ */
+enum ipa_dp_evt_type {
+ IPA_RECEIVE,
+ IPA_WRITE_DONE,
+ IPA_CLIENT_START_POLL,
+ IPA_CLIENT_COMP_NAPI,
+};
+
+typedef void (*ipa_notify_cb)(void *priv, enum ipa_dp_evt_type evt,
+ unsigned long data);
+
+/**
+ * struct ipa_ep_context - IPA end point context
+ * @allocated: True when the endpoint has been allocated
+ * @client: Client associated with the endpoint
+ * @channel_id: EP's GSI channel
+ * @evt_ring_id: EP's GSI channel event ring
+ * @priv: Pointer supplied when client_notify is called
+ * notified for new data avail
+ * @client_notify: Function called for event notification
+ * @napi_enabled: Endpoint uses NAPI
+ */
+struct ipa_ep_context {
+ bool allocated;
+ enum ipa_client_type client;
+ u32 channel_id;
+ u32 evt_ring_id;
+ bool bytes_xfered_valid;
+ u16 bytes_xfered;
+
+ struct ipa_reg_endp_init_hdr init_hdr;
+ struct ipa_reg_endp_init_hdr_ext hdr_ext;
+ struct ipa_reg_endp_init_mode init_mode;
+ struct ipa_reg_endp_init_aggr init_aggr;
+ struct ipa_reg_endp_init_cfg init_cfg;
+ struct ipa_reg_endp_init_seq init_seq;
+ struct ipa_reg_endp_init_deaggr init_deaggr;
+ struct ipa_reg_endp_init_hdr_metadata_mask metadata_mask;
+ struct ipa_reg_endp_status status;
+
+ void (*client_notify)(void *priv, enum ipa_dp_evt_type evt,
+ unsigned long data);
+ void *priv;
+ bool napi_enabled;
+ struct ipa_sys_context *sys;
+};
+
+/**
+ * enum ipa_desc_type - IPA decriptor type
+ */
+enum ipa_desc_type {
+ IPA_DATA_DESC,
+ IPA_DATA_DESC_SKB,
+ IPA_DATA_DESC_SKB_PAGED,
+ IPA_IMM_CMD_DESC,
+};
+
+/**
+ * struct ipa_desc - IPA descriptor
+ * @type: Type of data in the descriptor
+ * @len_opcode: Length of the payload, or opcode for immediate commands
+ * @payload: Points to descriptor payload (e.g., socket buffer)
+ * @callback: Completion callback
+ * @user1: Pointer data supplied to callback
+ * @user2: Integer data supplied with callback
+ */
+struct ipa_desc {
+ enum ipa_desc_type type;
+ u16 len_opcode;
+ void *payload;
+ void (*callback)(void *user1, int user2);
+ void *user1;
+ int user2;
+};
+
+/**
+ * enum ipahal_imm_cmd: IPA immediate commands
+ *
+ * All immediate commands are issued using the APPS_CMD_PROD
+ * endpoint. The numeric values here are the opcodes for IPA v3.5.1
+ * hardware
+ */
+enum ipahal_imm_cmd {
+ IPA_IMM_CMD_IP_V4_FILTER_INIT = 3,
+ IPA_IMM_CMD_IP_V6_FILTER_INIT = 4,
+ IPA_IMM_CMD_IP_V4_ROUTING_INIT = 7,
+ IPA_IMM_CMD_IP_V6_ROUTING_INIT = 8,
+ IPA_IMM_CMD_HDR_INIT_LOCAL = 9,
+ IPA_IMM_CMD_DMA_TASK_32B_ADDR = 17,
+ IPA_IMM_CMD_DMA_SHARED_MEM = 19,
+};
+
+/**
+ * struct ipa_transport_pm - Transport power management data
+ * @dec_clients: ?
+ * @transport_pm_mutex: Mutex to protect the transport_pm functionality.
+ */
+struct ipa_transport_pm {
+ atomic_t dec_clients;
+ struct mutex transport_pm_mutex; /* XXX comment this */
+};
+
+struct ipa_smp2p_info {
+ struct qcom_smem_state *valid_state;
+ struct qcom_smem_state *enabled_state;
+ unsigned int valid_bit;
+ unsigned int enabled_bit;
+ unsigned int clock_query_irq;
+ unsigned int post_init_irq;
+ bool ipa_clk_on;
+ bool res_sent;
+};
+
+struct ipa_dma_task_info {
+ struct ipa_dma_mem mem;
+ void *payload;
+};
+
+/**
+ * struct ipa_context - IPA context
+ * @filter_bitmap: End-points supporting filtering bitmap
+ * @ipa_irq: IRQ number used for IPA
+ * @ipa_phys: Physical address of IPA register memory
+ * @gsi: Pointer to GSI structure
+ * @dev: IPA device structure
+ * @ep: Endpoint array
+ * @dp: Data path information
+ * @smem_size: Size of shared memory
+ * @smem_offset: Offset of the usable area in shared memory
+ * @active_clients_mutex: Used when active clients count changes from/to 0
+ * @active_clients_count: Active client count
+ * @power_mgmt_wq: Workqueue for power management
+ * @transport_pm: Transport power management related information
+ * @cmd_prod_ep_id: Endpoint for APPS_CMD_PROD
+ * @lan_cons_ep_id: Endpoint for APPS_LAN_CONS
+ * @memory_path: Path for memory interconnect
+ * @imem_path: Path for internal memory interconnect
+ * @config_path: Path for configuration interconnect
+ * @modem_clk_vote_valid: Whether proxy clock vote is held for modem
+ * @ep_count: Number of endpoints available in hardware
+ * @uc_ctx: Microcontroller context
+ * @wakeup_lock: Lock protecting updates to wakeup_count
+ * @wakeup_count: Count of times wakelock is acquired
+ * @wakeup: Wakeup source
+ * @ipa_client_apps_wan_cons_agg_gro: APPS_WAN_CONS generic receive offload
+ * @smp2p_info: Information related to SMP2P
+ * @dma_task_info: Preallocated DMA task
+ */
+struct ipa_context {
+ u32 filter_bitmap;
+ u32 ipa_irq;
+ phys_addr_t ipa_phys;
+ struct gsi *gsi;
+ struct device *dev;
+
+ struct ipa_ep_context ep[IPA_EP_COUNT_MAX];
+ struct ipa_dp *dp;
+ u32 smem_size;
+ u16 smem_offset;
+ struct mutex active_clients_mutex; /* count changes from/to 0 */
+ atomic_t active_clients_count;
+ struct workqueue_struct *power_mgmt_wq;
+ struct ipa_transport_pm transport_pm;
+ u32 cmd_prod_ep_id;
+ u32 lan_cons_ep_id;
+ struct icc_path *memory_path;
+ struct icc_path *imem_path;
+ struct icc_path *config_path;
+ struct clk *core_clock;
+ bool modem_clk_vote_valid;
+ u32 ep_count;
+
+ struct ipa_uc_ctx *uc_ctx;
+
+ spinlock_t wakeup_lock; /* protects updates to wakeup_count */
+ u32 wakeup_count;
+ struct wakeup_source wakeup;
+
+ /* RMNET_IOCTL_INGRESS_FORMAT_AGG_DATA */
+ bool ipa_client_apps_wan_cons_agg_gro;
+ /* M-release support to know client endpoint */
+ struct ipa_smp2p_info smp2p_info;
+ struct ipa_dma_task_info dma_task_info;
+};
+
+extern struct ipa_context *ipa_ctx;
+
+int ipa_wwan_init(void);
+void ipa_wwan_cleanup(void);
+
+int ipa_stop_gsi_channel(u32 ep_id);
+
+void ipa_cfg_ep(u32 ep_id);
+
+int ipa_tx_dp(enum ipa_client_type dst, struct sk_buff *skb);
+
+bool ipa_endp_aggr_support(u32 ep_id);
+enum ipa_seq_type ipa_endp_seq_type(u32 ep_id);
+
+void ipa_endp_init_hdr_cons(u32 ep_id, u32 header_size,
+ u32 metadata_offset, u32 length_offset);
+void ipa_endp_init_hdr_prod(u32 ep_id, u32 header_size,
+ u32 metadata_offset, u32 length_offset);
+void ipa_endp_init_hdr_ext_cons(u32 ep_id, u32 pad_align,
+ bool pad_included);
+void ipa_endp_init_hdr_ext_prod(u32 ep_id, u32 pad_align);
+void ipa_endp_init_mode_cons(u32 ep_id);
+void ipa_endp_init_mode_prod(u32 ep_id, enum ipa_mode mode,
+ enum ipa_client_type dst_client);
+void ipa_endp_init_aggr_cons(u32 ep_id, u32 size, u32 count,
+ bool close_on_eof);
+void ipa_endp_init_aggr_prod(u32 ep_id, enum ipa_aggr_en aggr_en,
+ enum ipa_aggr_type aggr_type);
+void ipa_endp_init_cfg_cons(u32 ep_id,
+ enum ipa_cs_offload_en offload_type);
+void ipa_endp_init_cfg_prod(u32 ep_id, enum ipa_cs_offload_en offload_type,
+ u32 metadata_offset);
+void ipa_endp_init_seq_cons(u32 ep_id);
+void ipa_endp_init_seq_prod(u32 ep_id);
+void ipa_endp_init_deaggr_cons(u32 ep_id);
+void ipa_endp_init_deaggr_prod(u32 ep_id);
+void ipa_endp_init_hdr_metadata_mask_cons(u32 ep_id, u32 mask);
+void ipa_endp_init_hdr_metadata_mask_prod(u32 ep_id);
+void ipa_endp_status_cons(u32 ep_id, bool enable);
+void ipa_endp_status_prod(u32 ep_id, bool enable,
+ enum ipa_client_type client);
+int ipa_ep_alloc(enum ipa_client_type client);
+void ipa_ep_free(u32 ep_id);
+
+void ipa_no_intr_init(u32 prod_ep_id);
+
+int ipa_ep_setup(u32 ep_id, u32 channel_count, u32 evt_ring_mult,
+ u32 rx_buffer_size,
+ void (*client_notify)(void *priv, enum ipa_dp_evt_type type,
+ unsigned long data),
+ void *priv);
+
+void ipa_ep_teardown(u32 ep_id);
+
+void ipa_rx_switch_to_poll_mode(struct ipa_sys_context *sys);
+
+void ipa_add_interrupt_handler(enum ipa_irq_type interrupt,
+ ipa_irq_handler_t handler);
+
+void ipa_remove_interrupt_handler(enum ipa_irq_type interrupt);
+
+void ipa_proxy_clk_vote(void);
+void ipa_proxy_clk_unvote(void);
+
+u32 ipa_filter_bitmap_init(void);
+
+bool ipa_is_modem_ep(u32 ep_id);
+
+u32 ipa_client_ep_id(enum ipa_client_type client);
+u32 ipa_client_channel_id(enum ipa_client_type client);
+u32 ipa_client_tlv_count(enum ipa_client_type client);
+
+void ipa_init_hw(void);
+
+int ipa_interconnect_init(struct device *dev);
+void ipa_interconnect_exit(void);
+
+int ipa_interconnect_enable(void);
+int ipa_interconnect_disable(void);
+
+int ipa_send_cmd_timeout(struct ipa_desc *desc, u32 timeout);
+static inline int ipa_send_cmd(struct ipa_desc *desc)
+{
+ return ipa_send_cmd_timeout(desc, 0);
+}
+
+void ipa_client_add(void);
+bool ipa_client_add_additional(void);
+void ipa_client_remove(void);
+
+u32 ipa_aggr_byte_limit_buf_size(u32 byte_limit);
+
+void ipa_cfg_default_route(enum ipa_client_type client);
+
+int ipa_interrupts_init(void);
+
+void ipa_suspend_active_aggr_wa(u32 ep_id);
+void ipa_lan_rx_cb(void *priv, enum ipa_dp_evt_type evt, unsigned long data);
+
+void ipa_sram_settings_read(void);
+
+int ipa_modem_smem_init(void);
+
+struct ipa_uc_ctx *ipa_uc_init(phys_addr_t phys_addr);
+bool ipa_uc_loaded(void);
+void ipa_uc_panic_notifier(void);
+
+u32 ipa_get_ep_count(void);
+int ipa_ap_suspend(struct device *dev);
+int ipa_ap_resume(struct device *dev);
+void ipa_set_resource_groups_min_max_limits(void);
+void ipa_ep_suspend_all(void);
+void ipa_ep_resume_all(void);
+void ipa_inc_acquire_wakelock(void);
+void ipa_dec_release_wakelock(void);
+int ipa_rx_poll(u32 ep_id, int budget);
+void ipa_reset_freeze_vote(void);
+void ipa_enable_dcd(void);
+
+int ipa_gsi_dma_task_alloc(void);
+void ipa_gsi_dma_task_free(void);
+
+void ipa_set_flt_tuple_mask(u32 ep_id);
+void ipa_set_rt_tuple_mask(int tbl_idx);
+
+void ipa_gsi_irq_rx_notify_cb(void *chan_data, u16 count);
+void ipa_gsi_irq_tx_notify_cb(void *xfer_data);
+
+bool ipa_ep_polling(struct ipa_ep_context *ep);
+
+struct ipa_dp *ipa_dp_init(void);
+void ipa_dp_exit(struct ipa_dp *dp);
+
+#endif /* _IPA_I_H_ */
This last IPA code patch includes "Kconfig" for kernel configuration and a "Makefile" to build the code. The main configuration option enabling the code to be built is "CONFIG_IPA". A second one, "CONFIG_IPA_ASSERT", is on by default if CONFIG_IPA is selected, but can be disabled to cause ipa_assert() calls to not be included. Finally, "ipa_i.h" is a sort of dumping ground header file, declaring things used and needed throughout the code. (I expect much of this can be doled out into separate headers.) Signed-off-by: Alex Elder <elder@linaro.org> --- drivers/net/ipa/Kconfig | 30 ++ drivers/net/ipa/Makefile | 7 + drivers/net/ipa/ipa_i.h | 573 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 610 insertions(+) create mode 100644 drivers/net/ipa/Kconfig create mode 100644 drivers/net/ipa/Makefile create mode 100644 drivers/net/ipa/ipa_i.h -- 2.17.1