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Add samsung specific changes

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This commit is contained in:
Sascha Nesterovic
2025-08-11 14:29:00 +02:00
parent c66122e619
commit 4d134a1294
2688 changed files with 1127995 additions and 11475 deletions
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47
include/linux/mhi.h
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@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.
*
*/
#ifndef _MHI_H_
@@ -15,6 +15,9 @@
#include <linux/wait.h>
#include <linux/workqueue.h>
/* MHI client drivers to set this upper bound for tx buffer */
#define MHI_MAX_MTU 0xffff
#define MHI_MAX_OEM_PK_HASH_SEGMENTS 16
struct mhi_chan;
@@ -34,6 +37,8 @@ struct mhi_buf_info;
* @MHI_CB_SYS_ERROR: MHI device entered error state (may recover)
* @MHI_CB_FATAL_ERROR: MHI device entered fatal error state
* @MHI_CB_BW_REQ: Received a bandwidth switch request from device
* @MHI_CB_DTR_SIGNAL: DTR signaling update
* @MHI_CB_DTR_START_CHANNELS: DTR signal for client driver to start channels
*/
enum mhi_callback {
MHI_CB_IDLE,
@@ -45,6 +50,8 @@ enum mhi_callback {
MHI_CB_SYS_ERROR,
MHI_CB_FATAL_ERROR,
MHI_CB_BW_REQ,
MHI_CB_DTR_SIGNAL,
MHI_CB_DTR_START_CHANNELS,
};
/**
@@ -102,10 +109,12 @@ struct image_info {
* struct mhi_link_info - BW requirement
* target_link_speed - Link speed as defined by TLS bits in LinkControl reg
* target_link_width - Link width as defined by NLW bits in LinkStatus reg
* sequence_num - used by device to track bw requests sent to host
*/
struct mhi_link_info {
unsigned int target_link_speed;
unsigned int target_link_width;
int sequence_num;
};
/**
@@ -183,10 +192,26 @@ enum mhi_ch_ee_mask {
* enum mhi_er_data_type - Event ring data types
* @MHI_ER_DATA: Only client data over this ring
* @MHI_ER_CTRL: MHI control data and client data
* @MHI_ER_BW_SCALE: MHI controller bandwidth scale functionality
* @MHI_ER_TIMESYNC: MHI controller time synchronization DB mode functionality
*/
enum mhi_er_data_type {
MHI_ER_DATA,
MHI_ER_CTRL,
MHI_ER_BW_SCALE,
MHI_ER_TIMESYNC,
};
/**
* enum mhi_er_priority - Event ring processing priority
* @MHI_ER_PRIORITY_DEFAULT_NOSLEEP: processed by tasklet
* @MHI_ER_PRIORITY_HI_NOSLEEP: processed by hi-priority tasklet
* @MHI_ER_PRIORITY_HI_SLEEP: processed by hi-priority wq
*/
enum mhi_er_priority {
MHI_ER_PRIORITY_DEFAULT_NOSLEEP,
MHI_ER_PRIORITY_HI_NOSLEEP,
MHI_ER_PRIORITY_HI_SLEEP,
};
/**
@@ -242,7 +267,7 @@ struct mhi_channel_config {
* @irq_moderation_ms: Delay irq for additional events to be aggregated
* @irq: IRQ associated with this ring
* @channel: Dedicated channel number. U32_MAX indicates a non-dedicated ring
* @priority: Priority of this ring. Use 1 for now
* @priority: Processing priority of this ring.
* @mode: Doorbell mode
* @data_type: Type of data this ring will process
* @hardware_event: This ring is associated with hardware channels
@@ -296,6 +321,7 @@ struct mhi_controller_config {
* @bhi: Points to base of MHI BHI register space
* @bhie: Points to base of MHI BHIe register space
* @wake_db: MHI WAKE doorbell register address
* @host_notify_db: MHI host notification db address
* @iova_start: IOMMU starting address for data (required)
* @iova_stop: IOMMU stop address for data (required)
* @fw_image: Firmware image name for normal booting (optional)
@@ -310,6 +336,7 @@ struct mhi_controller_config {
* @reg_len: Length of the MHI MMIO region (required)
* @fbc_image: Points to firmware image buffer
* @rddm_image: Points to RAM dump buffer
* @tme_supported_image: Flag to make decision about firmware download start address (optional)
* @mhi_chan: Points to the channel configuration table
* @lpm_chans: List of channels that require LPM notifications
* @irq: base irq # to request (required)
@@ -336,7 +363,7 @@ struct mhi_controller_config {
* @dev_state: MHI device state
* @dev_wake: Device wakeup count
* @pending_pkts: Pending packets for the controller
* @M0, M2, M3: Counters to track number of device MHI state changes
* @M0, M2, M3, M3_fast: Counters to track number of device MHI state changes
* @transition_list: List of MHI state transitions
* @transition_lock: Lock for protecting MHI state transition list
* @wlock: Lock for protecting device wakeup
@@ -350,6 +377,7 @@ struct mhi_controller_config {
* @wake_toggle: CB function to assert and de-assert device wake (optional)
* @runtime_get: CB function to controller runtime resume (required)
* @runtime_put: CB function to decrement pm usage (required)
* @runtime_last_busy: CB function for controller to mark last busy (optional)
* @map_single: CB function to create TRE buffer
* @unmap_single: CB function to destroy TRE buffer
* @read_reg: Read a MHI register via the physical link (required)
@@ -357,6 +385,7 @@ struct mhi_controller_config {
* @reset: Controller specific reset function (optional)
* @buffer_len: Bounce buffer length
* @index: Index of the MHI controller instance
* @img_pre_alloc: allocate rddm and fbc image buffers one time
* @bounce_buf: Use of bounce buffer
* @fbc_download: MHI host needs to do complete image transfer (optional)
* @wake_set: Device wakeup set flag
@@ -384,6 +413,7 @@ struct mhi_controller {
void __iomem *bhi;
void __iomem *bhie;
void __iomem *wake_db;
void __iomem *host_notify_db;
dma_addr_t iova_start;
dma_addr_t iova_stop;
@@ -397,6 +427,7 @@ struct mhi_controller {
size_t reg_len;
struct image_info *fbc_image;
struct image_info *rddm_image;
bool tme_supported_image;
struct mhi_chan *mhi_chan;
struct list_head lpm_chans;
int *irq;
@@ -425,7 +456,7 @@ struct mhi_controller {
enum mhi_state dev_state;
atomic_t dev_wake;
atomic_t pending_pkts;
u32 M0, M2, M3;
u32 M0, M2, M3, M3_fast;
struct list_head transition_list;
spinlock_t transition_lock;
spinlock_t wlock;
@@ -441,6 +472,7 @@ struct mhi_controller {
void (*wake_toggle)(struct mhi_controller *mhi_cntrl);
int (*runtime_get)(struct mhi_controller *mhi_cntrl);
void (*runtime_put)(struct mhi_controller *mhi_cntrl);
void (*runtime_last_busy)(struct mhi_controller *mhi_cntrl);
int (*map_single)(struct mhi_controller *mhi_cntrl,
struct mhi_buf_info *buf);
void (*unmap_single)(struct mhi_controller *mhi_cntrl,
@@ -453,6 +485,7 @@ struct mhi_controller {
size_t buffer_len;
int index;
bool img_pre_alloc;
bool bounce_buf;
bool fbc_download;
bool wake_set;
@@ -471,8 +504,11 @@ struct mhi_controller {
* @dev: Driver model device node for the MHI device
* @dev_type: MHI device type
* @ul_chan_id: MHI channel id for UL transfer
* @ul_event_id: MHI event ring id for UL transfer
* @dl_chan_id: MHI channel id for DL transfer
* @ul_event_id: MHI event ring id for DL transfer
* @dev_wake: Device wakeup counter
* @tiocm: Device current terminal settings
*/
struct mhi_device {
const struct mhi_device_id *id;
@@ -483,8 +519,11 @@ struct mhi_device {
struct device dev;
enum mhi_device_type dev_type;
int ul_chan_id;
int ul_event_id;
int dl_chan_id;
int dl_event_id;
u32 dev_wake;
u32 tiocm;
};
/**