174 lines
5.7 KiB
C
174 lines
5.7 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
|
||
|
|
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
|
||
|
|
* Copyright (C) 2018-2022 Linaro Ltd.
|
||
|
|
*/
|
||
|
|
#ifndef _IPA_H_
|
||
|
|
#define _IPA_H_
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/device.h>
|
||
|
|
#include <linux/notifier.h>
|
||
|
|
#include <linux/pm_wakeup.h>
|
||
|
|
|
||
|
|
#include "ipa_version.h"
|
||
|
|
#include "gsi.h"
|
||
|
|
#include "ipa_mem.h"
|
||
|
|
#include "ipa_qmi.h"
|
||
|
|
#include "ipa_endpoint.h"
|
||
|
|
#include "ipa_interrupt.h"
|
||
|
|
|
||
|
|
struct clk;
|
||
|
|
struct icc_path;
|
||
|
|
struct net_device;
|
||
|
|
struct platform_device;
|
||
|
|
|
||
|
|
struct ipa_power;
|
||
|
|
struct ipa_smp2p;
|
||
|
|
struct ipa_interrupt;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct ipa - IPA information
|
||
|
|
* @gsi: Embedded GSI structure
|
||
|
|
* @version: IPA hardware version
|
||
|
|
* @pdev: Platform device
|
||
|
|
* @completion: Used to signal pipeline clear transfer complete
|
||
|
|
* @nb: Notifier block used for remoteproc SSR
|
||
|
|
* @notifier: Remoteproc SSR notifier
|
||
|
|
* @smp2p: SMP2P information
|
||
|
|
* @power: IPA power information
|
||
|
|
* @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
|
||
|
|
* @filter_count: Maximum number of entries in a filter 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
|
||
|
|
* @reg_virt: Virtual address used for IPA register access
|
||
|
|
* @regs: IPA register definitions
|
||
|
|
* @mem_addr: DMA address of IPA-local memory space
|
||
|
|
* @mem_virt: Virtual address of IPA-local memory space
|
||
|
|
* @mem_offset: Offset from @mem_virt used for access to IPA memory
|
||
|
|
* @mem_size: Total size (bytes) of memory at @mem_virt
|
||
|
|
* @mem_count: Number of entries in the mem array
|
||
|
|
* @mem: Array of IPA-local memory region descriptors
|
||
|
|
* @imem_iova: I/O virtual address of IPA region in IMEM
|
||
|
|
* @imem_size: Size of IMEM region
|
||
|
|
* @smem_iova: I/O virtual address of IPA region in SMEM
|
||
|
|
* @smem_size: Size of SMEM region
|
||
|
|
* @zero_addr: DMA address of preallocated zero-filled memory
|
||
|
|
* @zero_virt: Virtual address of preallocated zero-filled memory
|
||
|
|
* @zero_size: Size (bytes) of preallocated zero-filled memory
|
||
|
|
* @endpoint_count: Number of defined bits in most bitmaps below
|
||
|
|
* @available_count: Number of defined bits in the available bitmap
|
||
|
|
* @defined: Bitmap of endpoints defined in config data
|
||
|
|
* @available: Bitmap of endpoints supported by hardware
|
||
|
|
* @filtered: Bitmap of endpoints that support filtering
|
||
|
|
* @set_up: Bitmap of endpoints that are set up for use
|
||
|
|
* @enabled: Bitmap of currently enabled endpoints
|
||
|
|
* @modem_tx_count: Number of defined modem TX endoints
|
||
|
|
* @endpoint: Array of endpoint information
|
||
|
|
* @channel_map: Mapping of GSI channel to IPA endpoint
|
||
|
|
* @name_map: Mapping of IPA endpoint name to IPA endpoint
|
||
|
|
* @setup_complete: Flag indicating whether setup stage has completed
|
||
|
|
* @modem_state: State of modem (stopped, running)
|
||
|
|
* @modem_netdev: Network device structure used for modem
|
||
|
|
* @qmi: QMI information
|
||
|
|
*/
|
||
|
|
struct ipa {
|
||
|
|
struct gsi gsi;
|
||
|
|
enum ipa_version version;
|
||
|
|
struct platform_device *pdev;
|
||
|
|
struct completion completion;
|
||
|
|
struct notifier_block nb;
|
||
|
|
void *notifier;
|
||
|
|
struct ipa_smp2p *smp2p;
|
||
|
|
struct ipa_power *power;
|
||
|
|
|
||
|
|
dma_addr_t table_addr;
|
||
|
|
__le64 *table_virt;
|
||
|
|
u32 route_count;
|
||
|
|
u32 modem_route_count;
|
||
|
|
u32 filter_count;
|
||
|
|
|
||
|
|
struct ipa_interrupt *interrupt;
|
||
|
|
bool uc_powered;
|
||
|
|
bool uc_loaded;
|
||
|
|
|
||
|
|
void __iomem *reg_virt;
|
||
|
|
const struct regs *regs;
|
||
|
|
|
||
|
|
dma_addr_t mem_addr;
|
||
|
|
void *mem_virt;
|
||
|
|
u32 mem_offset;
|
||
|
|
u32 mem_size;
|
||
|
|
u32 mem_count;
|
||
|
|
const struct ipa_mem *mem;
|
||
|
|
|
||
|
|
unsigned long imem_iova;
|
||
|
|
size_t imem_size;
|
||
|
|
|
||
|
|
unsigned long smem_iova;
|
||
|
|
size_t smem_size;
|
||
|
|
|
||
|
|
dma_addr_t zero_addr;
|
||
|
|
void *zero_virt;
|
||
|
|
size_t zero_size;
|
||
|
|
|
||
|
|
/* Bitmaps indicating endpoint state */
|
||
|
|
u32 endpoint_count;
|
||
|
|
u32 available_count;
|
||
|
|
unsigned long *defined; /* Defined in configuration data */
|
||
|
|
unsigned long *available; /* Supported by hardware */
|
||
|
|
u64 filtered; /* Support filtering (AP and modem) */
|
||
|
|
unsigned long *set_up;
|
||
|
|
unsigned long *enabled;
|
||
|
|
|
||
|
|
u32 modem_tx_count;
|
||
|
|
struct ipa_endpoint endpoint[IPA_ENDPOINT_MAX];
|
||
|
|
struct ipa_endpoint *channel_map[GSI_CHANNEL_COUNT_MAX];
|
||
|
|
struct ipa_endpoint *name_map[IPA_ENDPOINT_COUNT];
|
||
|
|
|
||
|
|
bool setup_complete;
|
||
|
|
|
||
|
|
atomic_t modem_state; /* enum ipa_modem_state */
|
||
|
|
struct net_device *modem_netdev;
|
||
|
|
struct ipa_qmi qmi;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ipa_setup() - Perform IPA setup
|
||
|
|
* @ipa: IPA pointer
|
||
|
|
*
|
||
|
|
* IPA initialization is broken into stages: init; config; and setup.
|
||
|
|
* (These have inverses exit, deconfig, and teardown.)
|
||
|
|
*
|
||
|
|
* Activities performed at the init stage can be done without requiring
|
||
|
|
* any access to IPA hardware. Activities performed at the config stage
|
||
|
|
* require IPA power, because they involve access to IPA registers.
|
||
|
|
* The setup stage is performed only after the GSI hardware is ready
|
||
|
|
* (more on this below). The setup stage allows the AP to perform
|
||
|
|
* more complex initialization by issuing "immediate commands" using
|
||
|
|
* a special interface to the IPA.
|
||
|
|
*
|
||
|
|
* This function, @ipa_setup(), starts the setup stage.
|
||
|
|
*
|
||
|
|
* In order for the GSI hardware to be functional it needs firmware to be
|
||
|
|
* loaded (in addition to some other low-level initialization). This early
|
||
|
|
* GSI initialization can be done either by Trust Zone on the AP or by the
|
||
|
|
* modem.
|
||
|
|
*
|
||
|
|
* If it's done by Trust Zone, the AP loads the GSI firmware and supplies
|
||
|
|
* it to Trust Zone to verify and install. When this completes, if
|
||
|
|
* verification was successful, the GSI layer is ready and ipa_setup()
|
||
|
|
* implements the setup phase of initialization.
|
||
|
|
*
|
||
|
|
* If the modem performs early GSI initialization, the AP needs to know
|
||
|
|
* when this has occurred. An SMP2P interrupt is used for this purpose,
|
||
|
|
* and receipt of that interrupt triggers the call to ipa_setup().
|
||
|
|
*/
|
||
|
|
int ipa_setup(struct ipa *ipa);
|
||
|
|
|
||
|
|
#endif /* _IPA_H_ */
|