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Initial commit: Linux kernel 4.19 for Unplugged OS

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ziv committed 2025-10-06 13:52:42 +00:00
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include/linux/soc/ti/knav_dma.h
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/*
* Copyright (C) 2014 Texas Instruments Incorporated
* Authors: Sandeep Nair <sandeep_n@ti.com
* Cyril Chemparathy <cyril@ti.com
Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __SOC_TI_KEYSTONE_NAVIGATOR_DMA_H__
#define __SOC_TI_KEYSTONE_NAVIGATOR_DMA_H__
#include <linux/dmaengine.h>
/*
* PKTDMA descriptor manipulation macros for host packet descriptor
*/
#define MASK(x) (BIT(x) - 1)
#define KNAV_DMA_DESC_PKT_LEN_MASK MASK(22)
#define KNAV_DMA_DESC_PKT_LEN_SHIFT 0
#define KNAV_DMA_DESC_PS_INFO_IN_SOP BIT(22)
#define KNAV_DMA_DESC_PS_INFO_IN_DESC 0
#define KNAV_DMA_DESC_TAG_MASK MASK(8)
#define KNAV_DMA_DESC_SAG_HI_SHIFT 24
#define KNAV_DMA_DESC_STAG_LO_SHIFT 16
#define KNAV_DMA_DESC_DTAG_HI_SHIFT 8
#define KNAV_DMA_DESC_DTAG_LO_SHIFT 0
#define KNAV_DMA_DESC_HAS_EPIB BIT(31)
#define KNAV_DMA_DESC_NO_EPIB 0
#define KNAV_DMA_DESC_PSLEN_SHIFT 24
#define KNAV_DMA_DESC_PSLEN_MASK MASK(6)
#define KNAV_DMA_DESC_ERR_FLAG_SHIFT 20
#define KNAV_DMA_DESC_ERR_FLAG_MASK MASK(4)
#define KNAV_DMA_DESC_PSFLAG_SHIFT 16
#define KNAV_DMA_DESC_PSFLAG_MASK MASK(4)
#define KNAV_DMA_DESC_RETQ_SHIFT 0
#define KNAV_DMA_DESC_RETQ_MASK MASK(14)
#define KNAV_DMA_DESC_BUF_LEN_MASK MASK(22)
#define KNAV_DMA_DESC_EFLAGS_MASK MASK(4)
#define KNAV_DMA_DESC_EFLAGS_SHIFT 20
#define KNAV_DMA_NUM_EPIB_WORDS 4
#define KNAV_DMA_NUM_PS_WORDS 16
#define KNAV_DMA_NUM_SW_DATA_WORDS 4
#define KNAV_DMA_FDQ_PER_CHAN 4
/* Tx channel scheduling priority */
enum knav_dma_tx_priority {
DMA_PRIO_HIGH = 0,
DMA_PRIO_MED_H,
DMA_PRIO_MED_L,
DMA_PRIO_LOW
};
/* Rx channel error handling mode during buffer starvation */
enum knav_dma_rx_err_mode {
DMA_DROP = 0,
DMA_RETRY
};
/* Rx flow size threshold configuration */
enum knav_dma_rx_thresholds {
DMA_THRESH_NONE = 0,
DMA_THRESH_0 = 1,
DMA_THRESH_0_1 = 3,
DMA_THRESH_0_1_2 = 7
};
/* Descriptor type */
enum knav_dma_desc_type {
DMA_DESC_HOST = 0,
DMA_DESC_MONOLITHIC = 2
};
/**
* struct knav_dma_tx_cfg: Tx channel configuration
* @filt_einfo: Filter extended packet info
* @filt_pswords: Filter PS words present
* @knav_dma_tx_priority: Tx channel scheduling priority
*/
struct knav_dma_tx_cfg {
bool filt_einfo;
bool filt_pswords;
enum knav_dma_tx_priority priority;
};
/**
* struct knav_dma_rx_cfg: Rx flow configuration
* @einfo_present: Extended packet info present
* @psinfo_present: PS words present
* @knav_dma_rx_err_mode: Error during buffer starvation
* @knav_dma_desc_type: Host or Monolithic desc
* @psinfo_at_sop: PS word located at start of packet
* @sop_offset: Start of packet offset
* @dst_q: Destination queue for a given flow
* @thresh: Rx flow size threshold
* @fdq[]: Free desc Queue array
* @sz_thresh0: RX packet size threshold 0
* @sz_thresh1: RX packet size threshold 1
* @sz_thresh2: RX packet size threshold 2
*/
struct knav_dma_rx_cfg {
bool einfo_present;
bool psinfo_present;
enum knav_dma_rx_err_mode err_mode;
enum knav_dma_desc_type desc_type;
bool psinfo_at_sop;
unsigned int sop_offset;
unsigned int dst_q;
enum knav_dma_rx_thresholds thresh;
unsigned int fdq[KNAV_DMA_FDQ_PER_CHAN];
unsigned int sz_thresh0;
unsigned int sz_thresh1;
unsigned int sz_thresh2;
};
/**
* struct knav_dma_cfg: Pktdma channel configuration
* @sl_cfg: Slave configuration
* @tx: Tx channel configuration
* @rx: Rx flow configuration
*/
struct knav_dma_cfg {
enum dma_transfer_direction direction;
union {
struct knav_dma_tx_cfg tx;
struct knav_dma_rx_cfg rx;
} u;
};
/**
* struct knav_dma_desc: Host packet descriptor layout
* @desc_info: Descriptor information like id, type, length
* @tag_info: Flow tag info written in during RX
* @packet_info: Queue Manager, policy, flags etc
* @buff_len: Buffer length in bytes
* @buff: Buffer pointer
* @next_desc: For chaining the descriptors
* @orig_len: length since 'buff_len' can be overwritten
* @orig_buff: buff pointer since 'buff' can be overwritten
* @epib: Extended packet info block
* @psdata: Protocol specific
* @sw_data: Software private data not touched by h/w
*/
struct knav_dma_desc {
__le32 desc_info;
__le32 tag_info;
__le32 packet_info;
__le32 buff_len;
__le32 buff;
__le32 next_desc;
__le32 orig_len;
__le32 orig_buff;
__le32 epib[KNAV_DMA_NUM_EPIB_WORDS];
__le32 psdata[KNAV_DMA_NUM_PS_WORDS];
u32 sw_data[KNAV_DMA_NUM_SW_DATA_WORDS];
} ____cacheline_aligned;
#if IS_ENABLED(CONFIG_KEYSTONE_NAVIGATOR_DMA)
void *knav_dma_open_channel(struct device *dev, const char *name,
struct knav_dma_cfg *config);
void knav_dma_close_channel(void *channel);
int knav_dma_get_flow(void *channel);
bool knav_dma_device_ready(void);
#else
static inline void *knav_dma_open_channel(struct device *dev, const char *name,
struct knav_dma_cfg *config)
{
return (void *) NULL;
}
static inline void knav_dma_close_channel(void *channel)
{}
static inline int knav_dma_get_flow(void *channel)
{
return -EINVAL;
}
static inline bool knav_dma_device_ready(void)
{
return false;
}
#endif
#endif /* __SOC_TI_KEYSTONE_NAVIGATOR_DMA_H__ */
include/linux/soc/ti/knav_qmss.h
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/*
* Keystone Navigator Queue Management Sub-System header
*
* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
* Author: Sandeep Nair <sandeep_n@ti.com>
* Cyril Chemparathy <cyril@ti.com>
* Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __SOC_TI_KNAV_QMSS_H__
#define __SOC_TI_KNAV_QMSS_H__
#include <linux/err.h>
#include <linux/time.h>
#include <linux/atomic.h>
#include <linux/device.h>
#include <linux/fcntl.h>
#include <linux/dma-mapping.h>
/* queue types */
#define KNAV_QUEUE_QPEND ((unsigned)-2) /* interruptible qpend queue */
#define KNAV_QUEUE_ACC ((unsigned)-3) /* Accumulated queue */
#define KNAV_QUEUE_GP ((unsigned)-4) /* General purpose queue */
/* queue flags */
#define KNAV_QUEUE_SHARED 0x0001 /* Queue can be shared */
/**
* enum knav_queue_ctrl_cmd - queue operations.
* @KNAV_QUEUE_GET_ID: Get the ID number for an open queue
* @KNAV_QUEUE_FLUSH: forcibly empty a queue if possible
* @KNAV_QUEUE_SET_NOTIFIER: Set a notifier callback to a queue handle.
* @KNAV_QUEUE_ENABLE_NOTIFY: Enable notifier callback for a queue handle.
* @KNAV_QUEUE_DISABLE_NOTIFY: Disable notifier callback for a queue handle.
* @KNAV_QUEUE_GET_COUNT: Get number of queues.
*/
enum knav_queue_ctrl_cmd {
KNAV_QUEUE_GET_ID,
KNAV_QUEUE_FLUSH,
KNAV_QUEUE_SET_NOTIFIER,
KNAV_QUEUE_ENABLE_NOTIFY,
KNAV_QUEUE_DISABLE_NOTIFY,
KNAV_QUEUE_GET_COUNT
};
/* Queue notifier callback prototype */
typedef void (*knav_queue_notify_fn)(void *arg);
/**
* struct knav_queue_notify_config: Notifier configuration
* @fn: Notifier function
* @fn_arg: Notifier function arguments
*/
struct knav_queue_notify_config {
knav_queue_notify_fn fn;
void *fn_arg;
};
void *knav_queue_open(const char *name, unsigned id,
unsigned flags);
void knav_queue_close(void *qhandle);
int knav_queue_device_control(void *qhandle,
enum knav_queue_ctrl_cmd cmd,
unsigned long arg);
dma_addr_t knav_queue_pop(void *qhandle, unsigned *size);
int knav_queue_push(void *qhandle, dma_addr_t dma,
unsigned size, unsigned flags);
void *knav_pool_create(const char *name,
int num_desc, int region_id);
void knav_pool_destroy(void *ph);
int knav_pool_count(void *ph);
void *knav_pool_desc_get(void *ph);
void knav_pool_desc_put(void *ph, void *desc);
int knav_pool_desc_map(void *ph, void *desc, unsigned size,
dma_addr_t *dma, unsigned *dma_sz);
void *knav_pool_desc_unmap(void *ph, dma_addr_t dma, unsigned dma_sz);
dma_addr_t knav_pool_desc_virt_to_dma(void *ph, void *virt);
void *knav_pool_desc_dma_to_virt(void *ph, dma_addr_t dma);
bool knav_qmss_device_ready(void);
#endif /* __SOC_TI_KNAV_QMSS_H__ */
include/linux/soc/ti/ti-msgmgr.h
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/*
* Texas Instruments' Message Manager
*
* Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
* Nishanth Menon
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef TI_MSGMGR_H
#define TI_MSGMGR_H
/**
* struct ti_msgmgr_message - Message Manager structure
* @len: Length of data in the Buffer
* @buf: Buffer pointer
*
* This is the structure for data used in mbox_send_message
* the length of data buffer used depends on the SoC integration
* parameters - each message may be 64, 128 bytes long depending
* on SoC. Client is supposed to be aware of this.
*/
struct ti_msgmgr_message {
size_t len;
u8 *buf;
};
#endif /* TI_MSGMGR_H */
include/linux/soc/ti/ti_sci_protocol.h
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// SPDX-License-Identifier: GPL-2.0
/*
* Texas Instruments System Control Interface Protocol
*
* Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
* Nishanth Menon
*/
#ifndef __TISCI_PROTOCOL_H
#define __TISCI_PROTOCOL_H
/**
* struct ti_sci_version_info - version information structure
* @abi_major: Major ABI version. Change here implies risk of backward
* compatibility break.
* @abi_minor: Minor ABI version. Change here implies new feature addition,
* or compatible change in ABI.
* @firmware_revision: Firmware revision (not usually used).
* @firmware_description: Firmware description (not usually used).
*/
struct ti_sci_version_info {
u8 abi_major;
u8 abi_minor;
u16 firmware_revision;
char firmware_description[32];
};
struct ti_sci_handle;
/**
* struct ti_sci_core_ops - SoC Core Operations
* @reboot_device: Reboot the SoC
* Returns 0 for successful request(ideally should never return),
* else returns corresponding error value.
*/
struct ti_sci_core_ops {
int (*reboot_device)(const struct ti_sci_handle *handle);
};
/**
* struct ti_sci_dev_ops - Device control operations
* @get_device: Command to request for device managed by TISCI
* Returns 0 for successful exclusive request, else returns
* corresponding error message.
* @idle_device: Command to idle a device managed by TISCI
* Returns 0 for successful exclusive request, else returns
* corresponding error message.
* @put_device: Command to release a device managed by TISCI
* Returns 0 for successful release, else returns corresponding
* error message.
* @is_valid: Check if the device ID is a valid ID.
* Returns 0 if the ID is valid, else returns corresponding error.
* @get_context_loss_count: Command to retrieve context loss counter - this
* increments every time the device looses context. Overflow
* is possible.
* - count: pointer to u32 which will retrieve counter
* Returns 0 for successful information request and count has
* proper data, else returns corresponding error message.
* @is_idle: Reports back about device idle state
* - req_state: Returns requested idle state
* Returns 0 for successful information request and req_state and
* current_state has proper data, else returns corresponding error
* message.
* @is_stop: Reports back about device stop state
* - req_state: Returns requested stop state
* - current_state: Returns current stop state
* Returns 0 for successful information request and req_state and
* current_state has proper data, else returns corresponding error
* message.
* @is_on: Reports back about device ON(or active) state
* - req_state: Returns requested ON state
* - current_state: Returns current ON state
* Returns 0 for successful information request and req_state and
* current_state has proper data, else returns corresponding error
* message.
* @is_transitioning: Reports back if the device is in the middle of transition
* of state.
* -current_state: Returns 'true' if currently transitioning.
* @set_device_resets: Command to configure resets for device managed by TISCI.
* -reset_state: Device specific reset bit field
* Returns 0 for successful request, else returns
* corresponding error message.
* @get_device_resets: Command to read state of resets for device managed
* by TISCI.
* -reset_state: pointer to u32 which will retrieve resets
* Returns 0 for successful request, else returns
* corresponding error message.
*
* NOTE: for all these functions, the following parameters are generic in
* nature:
* -handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
* -id: Device Identifier
*
* Request for the device - NOTE: the client MUST maintain integrity of
* usage count by balancing get_device with put_device. No refcounting is
* managed by driver for that purpose.
*/
struct ti_sci_dev_ops {
int (*get_device)(const struct ti_sci_handle *handle, u32 id);
int (*idle_device)(const struct ti_sci_handle *handle, u32 id);
int (*put_device)(const struct ti_sci_handle *handle, u32 id);
int (*is_valid)(const struct ti_sci_handle *handle, u32 id);
int (*get_context_loss_count)(const struct ti_sci_handle *handle,
u32 id, u32 *count);
int (*is_idle)(const struct ti_sci_handle *handle, u32 id,
bool *requested_state);
int (*is_stop)(const struct ti_sci_handle *handle, u32 id,
bool *req_state, bool *current_state);
int (*is_on)(const struct ti_sci_handle *handle, u32 id,
bool *req_state, bool *current_state);
int (*is_transitioning)(const struct ti_sci_handle *handle, u32 id,
bool *current_state);
int (*set_device_resets)(const struct ti_sci_handle *handle, u32 id,
u32 reset_state);
int (*get_device_resets)(const struct ti_sci_handle *handle, u32 id,
u32 *reset_state);
};
/**
* struct ti_sci_clk_ops - Clock control operations
* @get_clock: Request for activation of clock and manage by processor
* - needs_ssc: 'true' if Spread Spectrum clock is desired.
* - can_change_freq: 'true' if frequency change is desired.
* - enable_input_term: 'true' if input termination is desired.
* @idle_clock: Request for Idling a clock managed by processor
* @put_clock: Release the clock to be auto managed by TISCI
* @is_auto: Is the clock being auto managed
* - req_state: state indicating if the clock is auto managed
* @is_on: Is the clock ON
* - req_state: if the clock is requested to be forced ON
* - current_state: if the clock is currently ON
* @is_off: Is the clock OFF
* - req_state: if the clock is requested to be forced OFF
* - current_state: if the clock is currently Gated
* @set_parent: Set the clock source of a specific device clock
* - parent_id: Parent clock identifier to set.
* @get_parent: Get the current clock source of a specific device clock
* - parent_id: Parent clock identifier which is the parent.
* @get_num_parents: Get the number of parents of the current clock source
* - num_parents: returns the number of parent clocks.
* @get_best_match_freq: Find a best matching frequency for a frequency
* range.
* - match_freq: Best matching frequency in Hz.
* @set_freq: Set the Clock frequency
* @get_freq: Get the Clock frequency
* - current_freq: Frequency in Hz that the clock is at.
*
* NOTE: for all these functions, the following parameters are generic in
* nature:
* -handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
* -did: Device identifier this request is for
* -cid: Clock identifier for the device for this request.
* Each device has it's own set of clock inputs. This indexes
* which clock input to modify.
* -min_freq: The minimum allowable frequency in Hz. This is the minimum
* allowable programmed frequency and does not account for clock
* tolerances and jitter.
* -target_freq: The target clock frequency in Hz. A frequency will be
* processed as close to this target frequency as possible.
* -max_freq: The maximum allowable frequency in Hz. This is the maximum
* allowable programmed frequency and does not account for clock
* tolerances and jitter.
*
* Request for the clock - NOTE: the client MUST maintain integrity of
* usage count by balancing get_clock with put_clock. No refcounting is
* managed by driver for that purpose.
*/
struct ti_sci_clk_ops {
int (*get_clock)(const struct ti_sci_handle *handle, u32 did, u8 cid,
bool needs_ssc, bool can_change_freq,
bool enable_input_term);
int (*idle_clock)(const struct ti_sci_handle *handle, u32 did, u8 cid);
int (*put_clock)(const struct ti_sci_handle *handle, u32 did, u8 cid);
int (*is_auto)(const struct ti_sci_handle *handle, u32 did, u8 cid,
bool *req_state);
int (*is_on)(const struct ti_sci_handle *handle, u32 did, u8 cid,
bool *req_state, bool *current_state);
int (*is_off)(const struct ti_sci_handle *handle, u32 did, u8 cid,
bool *req_state, bool *current_state);
int (*set_parent)(const struct ti_sci_handle *handle, u32 did, u8 cid,
u8 parent_id);
int (*get_parent)(const struct ti_sci_handle *handle, u32 did, u8 cid,
u8 *parent_id);
int (*get_num_parents)(const struct ti_sci_handle *handle, u32 did,
u8 cid, u8 *num_parents);
int (*get_best_match_freq)(const struct ti_sci_handle *handle, u32 did,
u8 cid, u64 min_freq, u64 target_freq,
u64 max_freq, u64 *match_freq);
int (*set_freq)(const struct ti_sci_handle *handle, u32 did, u8 cid,
u64 min_freq, u64 target_freq, u64 max_freq);
int (*get_freq)(const struct ti_sci_handle *handle, u32 did, u8 cid,
u64 *current_freq);
};
/**
* struct ti_sci_ops - Function support for TI SCI
* @dev_ops: Device specific operations
* @clk_ops: Clock specific operations
*/
struct ti_sci_ops {
struct ti_sci_core_ops core_ops;
struct ti_sci_dev_ops dev_ops;
struct ti_sci_clk_ops clk_ops;
};
/**
* struct ti_sci_handle - Handle returned to TI SCI clients for usage.
* @version: structure containing version information
* @ops: operations that are made available to TI SCI clients
*/
struct ti_sci_handle {
struct ti_sci_version_info version;
struct ti_sci_ops ops;
};
#if IS_ENABLED(CONFIG_TI_SCI_PROTOCOL)
const struct ti_sci_handle *ti_sci_get_handle(struct device *dev);
int ti_sci_put_handle(const struct ti_sci_handle *handle);
const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev);
#else /* CONFIG_TI_SCI_PROTOCOL */
static inline const struct ti_sci_handle *ti_sci_get_handle(struct device *dev)
{
return ERR_PTR(-EINVAL);
}
static inline int ti_sci_put_handle(const struct ti_sci_handle *handle)
{
return -EINVAL;
}
static inline
const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev)
{
return ERR_PTR(-EINVAL);
}
#endif /* CONFIG_TI_SCI_PROTOCOL */
#endif /* __TISCI_PROTOCOL_H */