linux/drivers/media/pci/intel/ipu6/ipu6-buttress.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2013--2024 Intel Corporation
 */

#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/firmware.h>
#include <linux/interrupt.h>
#include <linux/iopoll.h>
#include <linux/math64.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/pfn.h>
#include <linux/pm_runtime.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <linux/time64.h>

#include "ipu6.h"
#include "ipu6-bus.h"
#include "ipu6-buttress.h"
#include "ipu6-platform-buttress-regs.h"

#define BOOTLOADER_STATUS_OFFSET …

#define BOOTLOADER_MAGIC_KEY …

#define ENTRY …
#define EXIT …
#define QUERY …

#define BUTTRESS_TSC_SYNC_RESET_TRIAL_MAX …

#define BUTTRESS_POWER_TIMEOUT_US …

#define BUTTRESS_CSE_BOOTLOAD_TIMEOUT_US …
#define BUTTRESS_CSE_AUTHENTICATE_TIMEOUT_US …
#define BUTTRESS_CSE_FWRESET_TIMEOUT_US …

#define BUTTRESS_IPC_TX_TIMEOUT_MS …
#define BUTTRESS_IPC_RX_TIMEOUT_MS …
#define BUTTRESS_IPC_VALIDITY_TIMEOUT_US …
#define BUTTRESS_TSC_SYNC_TIMEOUT_US …

#define BUTTRESS_IPC_RESET_RETRY …
#define BUTTRESS_CSE_IPC_RESET_RETRY …
#define BUTTRESS_IPC_CMD_SEND_RETRY …

#define BUTTRESS_MAX_CONSECUTIVE_IRQS …

static const u32 ipu6_adev_irq_mask[2] = …;

int ipu6_buttress_ipc_reset(struct ipu6_device *isp,
			    struct ipu6_buttress_ipc *ipc)
{ … }

static void ipu6_buttress_ipc_validity_close(struct ipu6_device *isp,
					     struct ipu6_buttress_ipc *ipc)
{ … }

static int
ipu6_buttress_ipc_validity_open(struct ipu6_device *isp,
				struct ipu6_buttress_ipc *ipc)
{ … }

static void ipu6_buttress_ipc_recv(struct ipu6_device *isp,
				   struct ipu6_buttress_ipc *ipc, u32 *ipc_msg)
{ … }

static int ipu6_buttress_ipc_send_bulk(struct ipu6_device *isp,
				       enum ipu6_buttress_ipc_domain ipc_domain,
				       struct ipu6_ipc_buttress_bulk_msg *msgs,
				       u32 size)
{ … }

static int
ipu6_buttress_ipc_send(struct ipu6_device *isp,
		       enum ipu6_buttress_ipc_domain ipc_domain,
		       u32 ipc_msg, u32 size, bool require_resp,
		       u32 expected_resp)
{ … }

static irqreturn_t ipu6_buttress_call_isr(struct ipu6_bus_device *adev)
{ … }

irqreturn_t ipu6_buttress_isr(int irq, void *isp_ptr)
{ … }

irqreturn_t ipu6_buttress_isr_threaded(int irq, void *isp_ptr)
{ … }

int ipu6_buttress_power(struct device *dev, struct ipu6_buttress_ctrl *ctrl,
			bool on)
{ … }

bool ipu6_buttress_get_secure_mode(struct ipu6_device *isp)
{ … }

bool ipu6_buttress_auth_done(struct ipu6_device *isp)
{ … }
EXPORT_SYMBOL_NS_GPL(…);

int ipu6_buttress_reset_authentication(struct ipu6_device *isp)
{ … }

int ipu6_buttress_map_fw_image(struct ipu6_bus_device *sys,
			       const struct firmware *fw, struct sg_table *sgt)
{ … }
EXPORT_SYMBOL_NS_GPL(…);

void ipu6_buttress_unmap_fw_image(struct ipu6_bus_device *sys,
				  struct sg_table *sgt)
{ … }
EXPORT_SYMBOL_NS_GPL(…);

int ipu6_buttress_authenticate(struct ipu6_device *isp)
{ … }

static int ipu6_buttress_send_tsc_request(struct ipu6_device *isp)
{ … }

int ipu6_buttress_start_tsc_sync(struct ipu6_device *isp)
{ … }
EXPORT_SYMBOL_NS_GPL(…);

void ipu6_buttress_tsc_read(struct ipu6_device *isp, u64 *val)
{ … }
EXPORT_SYMBOL_NS_GPL(…);

u64 ipu6_buttress_tsc_ticks_to_ns(u64 ticks, const struct ipu6_device *isp)
{ … }
EXPORT_SYMBOL_NS_GPL(…);

void ipu6_buttress_restore(struct ipu6_device *isp)
{ … }

int ipu6_buttress_init(struct ipu6_device *isp)
{ … }

void ipu6_buttress_exit(struct ipu6_device *isp)
{ … }