45b659ee75
Sysfw provides an option for requesting exclusive access for a device using the flags MSG_FLAG_DEVICE_EXCLUSIVE. If this flag is not used, the device is meant to be shared across hosts. Once a device is requested from a host with this flag set, any request to this device from a different host will be nacked by sysfw. Current tisci driver enables this flag for every device requests. But this may not be true for all the devices. So provide a separate commands in driver for exclusive and shared device requests. Reviewed-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
3575 lines
100 KiB
C
3575 lines
100 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Texas Instruments System Control Interface Protocol Driver
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*
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* Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
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* Nishanth Menon
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*/
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#define pr_fmt(fmt) "%s: " fmt, __func__
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#include <linux/bitmap.h>
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#include <linux/debugfs.h>
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#include <linux/export.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/mailbox_client.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/semaphore.h>
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#include <linux/slab.h>
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#include <linux/soc/ti/ti-msgmgr.h>
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#include <linux/soc/ti/ti_sci_protocol.h>
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#include <linux/reboot.h>
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#include "ti_sci.h"
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/* List of all TI SCI devices active in system */
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static LIST_HEAD(ti_sci_list);
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/* Protection for the entire list */
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static DEFINE_MUTEX(ti_sci_list_mutex);
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/**
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* struct ti_sci_xfer - Structure representing a message flow
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* @tx_message: Transmit message
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* @rx_len: Receive message length
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* @xfer_buf: Preallocated buffer to store receive message
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* Since we work with request-ACK protocol, we can
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* reuse the same buffer for the rx path as we
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* use for the tx path.
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* @done: completion event
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*/
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struct ti_sci_xfer {
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struct ti_msgmgr_message tx_message;
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u8 rx_len;
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u8 *xfer_buf;
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struct completion done;
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};
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/**
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* struct ti_sci_xfers_info - Structure to manage transfer information
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* @sem_xfer_count: Counting Semaphore for managing max simultaneous
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* Messages.
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* @xfer_block: Preallocated Message array
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* @xfer_alloc_table: Bitmap table for allocated messages.
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* Index of this bitmap table is also used for message
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* sequence identifier.
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* @xfer_lock: Protection for message allocation
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*/
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struct ti_sci_xfers_info {
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struct semaphore sem_xfer_count;
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struct ti_sci_xfer *xfer_block;
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unsigned long *xfer_alloc_table;
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/* protect transfer allocation */
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spinlock_t xfer_lock;
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};
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/**
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* struct ti_sci_rm_type_map - Structure representing TISCI Resource
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* management representation of dev_ids.
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* @dev_id: TISCI device ID
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* @type: Corresponding id as identified by TISCI RM.
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*
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* Note: This is used only as a work around for using RM range apis
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* for AM654 SoC. For future SoCs dev_id will be used as type
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* for RM range APIs. In order to maintain ABI backward compatibility
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* type is not being changed for AM654 SoC.
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*/
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struct ti_sci_rm_type_map {
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u32 dev_id;
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u16 type;
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};
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/**
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* struct ti_sci_desc - Description of SoC integration
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* @default_host_id: Host identifier representing the compute entity
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* @max_rx_timeout_ms: Timeout for communication with SoC (in Milliseconds)
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* @max_msgs: Maximum number of messages that can be pending
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* simultaneously in the system
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* @max_msg_size: Maximum size of data per message that can be handled.
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* @rm_type_map: RM resource type mapping structure.
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*/
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struct ti_sci_desc {
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u8 default_host_id;
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int max_rx_timeout_ms;
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int max_msgs;
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int max_msg_size;
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struct ti_sci_rm_type_map *rm_type_map;
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};
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/**
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* struct ti_sci_info - Structure representing a TI SCI instance
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* @dev: Device pointer
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* @desc: SoC description for this instance
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* @nb: Reboot Notifier block
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* @d: Debugfs file entry
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* @debug_region: Memory region where the debug message are available
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* @debug_region_size: Debug region size
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* @debug_buffer: Buffer allocated to copy debug messages.
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* @handle: Instance of TI SCI handle to send to clients.
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* @cl: Mailbox Client
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* @chan_tx: Transmit mailbox channel
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* @chan_rx: Receive mailbox channel
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* @minfo: Message info
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* @node: list head
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* @host_id: Host ID
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* @users: Number of users of this instance
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*/
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struct ti_sci_info {
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struct device *dev;
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struct notifier_block nb;
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const struct ti_sci_desc *desc;
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struct dentry *d;
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void __iomem *debug_region;
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char *debug_buffer;
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size_t debug_region_size;
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struct ti_sci_handle handle;
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struct mbox_client cl;
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struct mbox_chan *chan_tx;
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struct mbox_chan *chan_rx;
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struct ti_sci_xfers_info minfo;
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struct list_head node;
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u8 host_id;
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/* protected by ti_sci_list_mutex */
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int users;
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};
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#define cl_to_ti_sci_info(c) container_of(c, struct ti_sci_info, cl)
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#define handle_to_ti_sci_info(h) container_of(h, struct ti_sci_info, handle)
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#define reboot_to_ti_sci_info(n) container_of(n, struct ti_sci_info, nb)
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#ifdef CONFIG_DEBUG_FS
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/**
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* ti_sci_debug_show() - Helper to dump the debug log
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* @s: sequence file pointer
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* @unused: unused.
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*
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* Return: 0
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*/
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static int ti_sci_debug_show(struct seq_file *s, void *unused)
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{
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struct ti_sci_info *info = s->private;
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memcpy_fromio(info->debug_buffer, info->debug_region,
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info->debug_region_size);
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/*
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* We don't trust firmware to leave NULL terminated last byte (hence
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* we have allocated 1 extra 0 byte). Since we cannot guarantee any
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* specific data format for debug messages, We just present the data
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* in the buffer as is - we expect the messages to be self explanatory.
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*/
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seq_puts(s, info->debug_buffer);
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return 0;
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}
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/* Provide the log file operations interface*/
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DEFINE_SHOW_ATTRIBUTE(ti_sci_debug);
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/**
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* ti_sci_debugfs_create() - Create log debug file
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* @pdev: platform device pointer
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* @info: Pointer to SCI entity information
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*
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* Return: 0 if all went fine, else corresponding error.
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*/
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static int ti_sci_debugfs_create(struct platform_device *pdev,
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struct ti_sci_info *info)
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{
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struct device *dev = &pdev->dev;
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struct resource *res;
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char debug_name[50] = "ti_sci_debug@";
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/* Debug region is optional */
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
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"debug_messages");
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info->debug_region = devm_ioremap_resource(dev, res);
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if (IS_ERR(info->debug_region))
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return 0;
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info->debug_region_size = resource_size(res);
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info->debug_buffer = devm_kcalloc(dev, info->debug_region_size + 1,
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sizeof(char), GFP_KERNEL);
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if (!info->debug_buffer)
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return -ENOMEM;
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/* Setup NULL termination */
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info->debug_buffer[info->debug_region_size] = 0;
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info->d = debugfs_create_file(strncat(debug_name, dev_name(dev),
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sizeof(debug_name) -
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sizeof("ti_sci_debug@")),
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0444, NULL, info, &ti_sci_debug_fops);
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if (IS_ERR(info->d))
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return PTR_ERR(info->d);
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dev_dbg(dev, "Debug region => %p, size = %zu bytes, resource: %pr\n",
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info->debug_region, info->debug_region_size, res);
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return 0;
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}
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/**
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* ti_sci_debugfs_destroy() - clean up log debug file
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* @pdev: platform device pointer
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* @info: Pointer to SCI entity information
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*/
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static void ti_sci_debugfs_destroy(struct platform_device *pdev,
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struct ti_sci_info *info)
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{
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if (IS_ERR(info->debug_region))
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return;
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debugfs_remove(info->d);
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}
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#else /* CONFIG_DEBUG_FS */
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static inline int ti_sci_debugfs_create(struct platform_device *dev,
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struct ti_sci_info *info)
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{
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return 0;
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}
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static inline void ti_sci_debugfs_destroy(struct platform_device *dev,
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struct ti_sci_info *info)
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{
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}
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#endif /* CONFIG_DEBUG_FS */
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/**
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* ti_sci_dump_header_dbg() - Helper to dump a message header.
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* @dev: Device pointer corresponding to the SCI entity
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* @hdr: pointer to header.
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*/
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static inline void ti_sci_dump_header_dbg(struct device *dev,
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struct ti_sci_msg_hdr *hdr)
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{
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dev_dbg(dev, "MSGHDR:type=0x%04x host=0x%02x seq=0x%02x flags=0x%08x\n",
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hdr->type, hdr->host, hdr->seq, hdr->flags);
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}
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/**
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* ti_sci_rx_callback() - mailbox client callback for receive messages
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* @cl: client pointer
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* @m: mailbox message
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*
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* Processes one received message to appropriate transfer information and
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* signals completion of the transfer.
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*
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* NOTE: This function will be invoked in IRQ context, hence should be
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* as optimal as possible.
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*/
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static void ti_sci_rx_callback(struct mbox_client *cl, void *m)
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{
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struct ti_sci_info *info = cl_to_ti_sci_info(cl);
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struct device *dev = info->dev;
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struct ti_sci_xfers_info *minfo = &info->minfo;
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struct ti_msgmgr_message *mbox_msg = m;
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struct ti_sci_msg_hdr *hdr = (struct ti_sci_msg_hdr *)mbox_msg->buf;
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struct ti_sci_xfer *xfer;
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u8 xfer_id;
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xfer_id = hdr->seq;
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/*
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* Are we even expecting this?
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* NOTE: barriers were implicit in locks used for modifying the bitmap
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*/
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if (!test_bit(xfer_id, minfo->xfer_alloc_table)) {
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dev_err(dev, "Message for %d is not expected!\n", xfer_id);
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return;
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}
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xfer = &minfo->xfer_block[xfer_id];
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/* Is the message of valid length? */
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if (mbox_msg->len > info->desc->max_msg_size) {
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dev_err(dev, "Unable to handle %zu xfer(max %d)\n",
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mbox_msg->len, info->desc->max_msg_size);
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ti_sci_dump_header_dbg(dev, hdr);
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return;
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}
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if (mbox_msg->len < xfer->rx_len) {
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dev_err(dev, "Recv xfer %zu < expected %d length\n",
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mbox_msg->len, xfer->rx_len);
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ti_sci_dump_header_dbg(dev, hdr);
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return;
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}
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ti_sci_dump_header_dbg(dev, hdr);
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/* Take a copy to the rx buffer.. */
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memcpy(xfer->xfer_buf, mbox_msg->buf, xfer->rx_len);
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complete(&xfer->done);
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}
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/**
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* ti_sci_get_one_xfer() - Allocate one message
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* @info: Pointer to SCI entity information
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* @msg_type: Message type
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* @msg_flags: Flag to set for the message
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* @tx_message_size: transmit message size
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* @rx_message_size: receive message size
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*
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* Helper function which is used by various command functions that are
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* exposed to clients of this driver for allocating a message traffic event.
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*
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* This function can sleep depending on pending requests already in the system
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* for the SCI entity. Further, this also holds a spinlock to maintain integrity
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* of internal data structures.
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*
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* Return: 0 if all went fine, else corresponding error.
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*/
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static struct ti_sci_xfer *ti_sci_get_one_xfer(struct ti_sci_info *info,
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u16 msg_type, u32 msg_flags,
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size_t tx_message_size,
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size_t rx_message_size)
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{
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struct ti_sci_xfers_info *minfo = &info->minfo;
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struct ti_sci_xfer *xfer;
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struct ti_sci_msg_hdr *hdr;
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unsigned long flags;
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unsigned long bit_pos;
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u8 xfer_id;
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int ret;
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int timeout;
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/* Ensure we have sane transfer sizes */
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if (rx_message_size > info->desc->max_msg_size ||
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tx_message_size > info->desc->max_msg_size ||
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rx_message_size < sizeof(*hdr) || tx_message_size < sizeof(*hdr))
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return ERR_PTR(-ERANGE);
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/*
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* Ensure we have only controlled number of pending messages.
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* Ideally, we might just have to wait a single message, be
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* conservative and wait 5 times that..
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*/
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timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms) * 5;
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ret = down_timeout(&minfo->sem_xfer_count, timeout);
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if (ret < 0)
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return ERR_PTR(ret);
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/* Keep the locked section as small as possible */
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spin_lock_irqsave(&minfo->xfer_lock, flags);
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bit_pos = find_first_zero_bit(minfo->xfer_alloc_table,
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info->desc->max_msgs);
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set_bit(bit_pos, minfo->xfer_alloc_table);
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spin_unlock_irqrestore(&minfo->xfer_lock, flags);
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/*
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* We already ensured in probe that we can have max messages that can
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* fit in hdr.seq - NOTE: this improves access latencies
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* to predictable O(1) access, BUT, it opens us to risk if
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* remote misbehaves with corrupted message sequence responses.
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* If that happens, we are going to be messed up anyways..
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*/
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xfer_id = (u8)bit_pos;
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xfer = &minfo->xfer_block[xfer_id];
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hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
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xfer->tx_message.len = tx_message_size;
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xfer->rx_len = (u8)rx_message_size;
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reinit_completion(&xfer->done);
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hdr->seq = xfer_id;
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hdr->type = msg_type;
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hdr->host = info->host_id;
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hdr->flags = msg_flags;
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return xfer;
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}
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/**
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* ti_sci_put_one_xfer() - Release a message
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* @minfo: transfer info pointer
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* @xfer: message that was reserved by ti_sci_get_one_xfer
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*
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* This holds a spinlock to maintain integrity of internal data structures.
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*/
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static void ti_sci_put_one_xfer(struct ti_sci_xfers_info *minfo,
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struct ti_sci_xfer *xfer)
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{
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unsigned long flags;
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struct ti_sci_msg_hdr *hdr;
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u8 xfer_id;
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hdr = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
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xfer_id = hdr->seq;
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/*
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* Keep the locked section as small as possible
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* NOTE: we might escape with smp_mb and no lock here..
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* but just be conservative and symmetric.
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*/
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spin_lock_irqsave(&minfo->xfer_lock, flags);
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clear_bit(xfer_id, minfo->xfer_alloc_table);
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spin_unlock_irqrestore(&minfo->xfer_lock, flags);
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/* Increment the count for the next user to get through */
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up(&minfo->sem_xfer_count);
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}
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/**
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* ti_sci_do_xfer() - Do one transfer
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* @info: Pointer to SCI entity information
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* @xfer: Transfer to initiate and wait for response
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*
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* Return: -ETIMEDOUT in case of no response, if transmit error,
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* return corresponding error, else if all goes well,
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* return 0.
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*/
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static inline int ti_sci_do_xfer(struct ti_sci_info *info,
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struct ti_sci_xfer *xfer)
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{
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int ret;
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int timeout;
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struct device *dev = info->dev;
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ret = mbox_send_message(info->chan_tx, &xfer->tx_message);
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if (ret < 0)
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return ret;
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ret = 0;
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/* And we wait for the response. */
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timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms);
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if (!wait_for_completion_timeout(&xfer->done, timeout)) {
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dev_err(dev, "Mbox timedout in resp(caller: %pS)\n",
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(void *)_RET_IP_);
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ret = -ETIMEDOUT;
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}
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/*
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* NOTE: we might prefer not to need the mailbox ticker to manage the
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* transfer queueing since the protocol layer queues things by itself.
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* Unfortunately, we have to kick the mailbox framework after we have
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* received our message.
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*/
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mbox_client_txdone(info->chan_tx, ret);
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return ret;
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}
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/**
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* ti_sci_cmd_get_revision() - command to get the revision of the SCI entity
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* @info: Pointer to SCI entity information
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*
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* Updates the SCI information in the internal data structure.
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*
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* Return: 0 if all went fine, else return appropriate error.
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*/
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static int ti_sci_cmd_get_revision(struct ti_sci_info *info)
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{
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struct device *dev = info->dev;
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struct ti_sci_handle *handle = &info->handle;
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struct ti_sci_version_info *ver = &handle->version;
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struct ti_sci_msg_resp_version *rev_info;
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struct ti_sci_xfer *xfer;
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int ret;
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xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_VERSION,
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TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
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sizeof(struct ti_sci_msg_hdr),
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sizeof(*rev_info));
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if (IS_ERR(xfer)) {
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ret = PTR_ERR(xfer);
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dev_err(dev, "Message alloc failed(%d)\n", ret);
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return ret;
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}
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rev_info = (struct ti_sci_msg_resp_version *)xfer->xfer_buf;
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|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
ver->abi_major = rev_info->abi_major;
|
|
ver->abi_minor = rev_info->abi_minor;
|
|
ver->firmware_revision = rev_info->firmware_revision;
|
|
strncpy(ver->firmware_description, rev_info->firmware_description,
|
|
sizeof(ver->firmware_description));
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_is_response_ack() - Generic ACK/NACK message checkup
|
|
* @r: pointer to response buffer
|
|
*
|
|
* Return: true if the response was an ACK, else returns false.
|
|
*/
|
|
static inline bool ti_sci_is_response_ack(void *r)
|
|
{
|
|
struct ti_sci_msg_hdr *hdr = r;
|
|
|
|
return hdr->flags & TI_SCI_FLAG_RESP_GENERIC_ACK ? true : false;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_set_device_state() - Set device state helper
|
|
* @handle: pointer to TI SCI handle
|
|
* @id: Device identifier
|
|
* @flags: flags to setup for the device
|
|
* @state: State to move the device to
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_set_device_state(const struct ti_sci_handle *handle,
|
|
u32 id, u32 flags, u8 state)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_set_device_state *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE,
|
|
flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_set_device_state *)xfer->xfer_buf;
|
|
req->id = id;
|
|
req->state = state;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_get_device_state() - Get device state helper
|
|
* @handle: Handle to the device
|
|
* @id: Device Identifier
|
|
* @clcnt: Pointer to Context Loss Count
|
|
* @resets: pointer to resets
|
|
* @p_state: pointer to p_state
|
|
* @c_state: pointer to c_state
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_get_device_state(const struct ti_sci_handle *handle,
|
|
u32 id, u32 *clcnt, u32 *resets,
|
|
u8 *p_state, u8 *c_state)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_get_device_state *req;
|
|
struct ti_sci_msg_resp_get_device_state *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
if (!clcnt && !resets && !p_state && !c_state)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_get_device_state *)xfer->xfer_buf;
|
|
req->id = id;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_resp_get_device_state *)xfer->xfer_buf;
|
|
if (!ti_sci_is_response_ack(resp)) {
|
|
ret = -ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
if (clcnt)
|
|
*clcnt = resp->context_loss_count;
|
|
if (resets)
|
|
*resets = resp->resets;
|
|
if (p_state)
|
|
*p_state = resp->programmed_state;
|
|
if (c_state)
|
|
*c_state = resp->current_state;
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_get_device() - command to request for device managed by TISCI
|
|
* that can be shared with other hosts.
|
|
* @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.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_get_device(const struct ti_sci_handle *handle, u32 id)
|
|
{
|
|
return ti_sci_set_device_state(handle, id, 0,
|
|
MSG_DEVICE_SW_STATE_ON);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_get_device_exclusive() - command to request for device managed by
|
|
* TISCI that is exclusively owned by the
|
|
* requesting host.
|
|
* @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.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_get_device_exclusive(const struct ti_sci_handle *handle,
|
|
u32 id)
|
|
{
|
|
return ti_sci_set_device_state(handle, id,
|
|
MSG_FLAG_DEVICE_EXCLUSIVE,
|
|
MSG_DEVICE_SW_STATE_ON);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_idle_device() - Command to idle a device managed by TISCI
|
|
* @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.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_idle_device(const struct ti_sci_handle *handle, u32 id)
|
|
{
|
|
return ti_sci_set_device_state(handle, id, 0,
|
|
MSG_DEVICE_SW_STATE_RETENTION);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_idle_device_exclusive() - Command to idle a device managed by
|
|
* TISCI that is exclusively owned by
|
|
* requesting host.
|
|
* @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.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_idle_device_exclusive(const struct ti_sci_handle *handle,
|
|
u32 id)
|
|
{
|
|
return ti_sci_set_device_state(handle, id,
|
|
MSG_FLAG_DEVICE_EXCLUSIVE,
|
|
MSG_DEVICE_SW_STATE_RETENTION);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_put_device() - command to release a device managed by TISCI
|
|
* @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.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_put_device(const struct ti_sci_handle *handle, u32 id)
|
|
{
|
|
return ti_sci_set_device_state(handle, id,
|
|
0, MSG_DEVICE_SW_STATE_AUTO_OFF);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_dev_is_valid() - Is the device valid
|
|
* @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
|
|
* @id: Device Identifier
|
|
*
|
|
* Return: 0 if all went fine and the device ID is valid, else return
|
|
* appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_dev_is_valid(const struct ti_sci_handle *handle, u32 id)
|
|
{
|
|
u8 unused;
|
|
|
|
/* check the device state which will also tell us if the ID is valid */
|
|
return ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &unused);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_dev_get_clcnt() - Get context loss counter
|
|
* @handle: Pointer to TISCI handle
|
|
* @id: Device Identifier
|
|
* @count: Pointer to Context Loss counter to populate
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_dev_get_clcnt(const struct ti_sci_handle *handle, u32 id,
|
|
u32 *count)
|
|
{
|
|
return ti_sci_get_device_state(handle, id, count, NULL, NULL, NULL);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_dev_is_idle() - Check if the device is requested to be idle
|
|
* @handle: Pointer to TISCI handle
|
|
* @id: Device Identifier
|
|
* @r_state: true if requested to be idle
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_dev_is_idle(const struct ti_sci_handle *handle, u32 id,
|
|
bool *r_state)
|
|
{
|
|
int ret;
|
|
u8 state;
|
|
|
|
if (!r_state)
|
|
return -EINVAL;
|
|
|
|
ret = ti_sci_get_device_state(handle, id, NULL, NULL, &state, NULL);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*r_state = (state == MSG_DEVICE_SW_STATE_RETENTION);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_dev_is_stop() - Check if the device is requested to be stopped
|
|
* @handle: Pointer to TISCI handle
|
|
* @id: Device Identifier
|
|
* @r_state: true if requested to be stopped
|
|
* @curr_state: true if currently stopped.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_dev_is_stop(const struct ti_sci_handle *handle, u32 id,
|
|
bool *r_state, bool *curr_state)
|
|
{
|
|
int ret;
|
|
u8 p_state, c_state;
|
|
|
|
if (!r_state && !curr_state)
|
|
return -EINVAL;
|
|
|
|
ret =
|
|
ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (r_state)
|
|
*r_state = (p_state == MSG_DEVICE_SW_STATE_AUTO_OFF);
|
|
if (curr_state)
|
|
*curr_state = (c_state == MSG_DEVICE_HW_STATE_OFF);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_dev_is_on() - Check if the device is requested to be ON
|
|
* @handle: Pointer to TISCI handle
|
|
* @id: Device Identifier
|
|
* @r_state: true if requested to be ON
|
|
* @curr_state: true if currently ON and active
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_dev_is_on(const struct ti_sci_handle *handle, u32 id,
|
|
bool *r_state, bool *curr_state)
|
|
{
|
|
int ret;
|
|
u8 p_state, c_state;
|
|
|
|
if (!r_state && !curr_state)
|
|
return -EINVAL;
|
|
|
|
ret =
|
|
ti_sci_get_device_state(handle, id, NULL, NULL, &p_state, &c_state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (r_state)
|
|
*r_state = (p_state == MSG_DEVICE_SW_STATE_ON);
|
|
if (curr_state)
|
|
*curr_state = (c_state == MSG_DEVICE_HW_STATE_ON);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_dev_is_trans() - Check if the device is currently transitioning
|
|
* @handle: Pointer to TISCI handle
|
|
* @id: Device Identifier
|
|
* @curr_state: true if currently transitioning.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_dev_is_trans(const struct ti_sci_handle *handle, u32 id,
|
|
bool *curr_state)
|
|
{
|
|
int ret;
|
|
u8 state;
|
|
|
|
if (!curr_state)
|
|
return -EINVAL;
|
|
|
|
ret = ti_sci_get_device_state(handle, id, NULL, NULL, NULL, &state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*curr_state = (state == MSG_DEVICE_HW_STATE_TRANS);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_set_device_resets() - command to set resets for device managed
|
|
* by TISCI
|
|
* @handle: Pointer to TISCI handle as retrieved by *ti_sci_get_handle
|
|
* @id: Device Identifier
|
|
* @reset_state: Device specific reset bit field
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_set_device_resets(const struct ti_sci_handle *handle,
|
|
u32 id, u32 reset_state)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_set_device_resets *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_DEVICE_RESETS,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_set_device_resets *)xfer->xfer_buf;
|
|
req->id = id;
|
|
req->resets = reset_state;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_get_device_resets() - Get reset state for device managed
|
|
* by TISCI
|
|
* @handle: Pointer to TISCI handle
|
|
* @id: Device Identifier
|
|
* @reset_state: Pointer to reset state to populate
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_get_device_resets(const struct ti_sci_handle *handle,
|
|
u32 id, u32 *reset_state)
|
|
{
|
|
return ti_sci_get_device_state(handle, id, NULL, reset_state, NULL,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_set_clock_state() - Set clock state helper
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @flags: Header flags as needed
|
|
* @state: State to request for the clock.
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_set_clock_state(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id,
|
|
u32 flags, u8 state)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_set_clock_state *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_STATE,
|
|
flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_set_clock_state *)xfer->xfer_buf;
|
|
req->dev_id = dev_id;
|
|
if (clk_id < 255) {
|
|
req->clk_id = clk_id;
|
|
} else {
|
|
req->clk_id = 255;
|
|
req->clk_id_32 = clk_id;
|
|
}
|
|
req->request_state = state;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_get_clock_state() - Get clock state helper
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @programmed_state: State requested for clock to move to
|
|
* @current_state: State that the clock is currently in
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_get_clock_state(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id,
|
|
u8 *programmed_state, u8 *current_state)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_get_clock_state *req;
|
|
struct ti_sci_msg_resp_get_clock_state *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
if (!programmed_state && !current_state)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_STATE,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_get_clock_state *)xfer->xfer_buf;
|
|
req->dev_id = dev_id;
|
|
if (clk_id < 255) {
|
|
req->clk_id = clk_id;
|
|
} else {
|
|
req->clk_id = 255;
|
|
req->clk_id_32 = clk_id;
|
|
}
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_resp_get_clock_state *)xfer->xfer_buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp)) {
|
|
ret = -ENODEV;
|
|
goto fail;
|
|
}
|
|
|
|
if (programmed_state)
|
|
*programmed_state = resp->programmed_state;
|
|
if (current_state)
|
|
*current_state = resp->current_state;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_get_clock() - Get control of a clock from TI SCI
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @needs_ssc: 'true' if Spread Spectrum clock is desired, else 'false'
|
|
* @can_change_freq: 'true' if frequency change is desired, else 'false'
|
|
* @enable_input_term: 'true' if input termination is desired, else 'false'
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_get_clock(const struct ti_sci_handle *handle, u32 dev_id,
|
|
u32 clk_id, bool needs_ssc,
|
|
bool can_change_freq, bool enable_input_term)
|
|
{
|
|
u32 flags = 0;
|
|
|
|
flags |= needs_ssc ? MSG_FLAG_CLOCK_ALLOW_SSC : 0;
|
|
flags |= can_change_freq ? MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE : 0;
|
|
flags |= enable_input_term ? MSG_FLAG_CLOCK_INPUT_TERM : 0;
|
|
|
|
return ti_sci_set_clock_state(handle, dev_id, clk_id, flags,
|
|
MSG_CLOCK_SW_STATE_REQ);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_idle_clock() - Idle a clock which is in our control
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
*
|
|
* NOTE: This clock must have been requested by get_clock previously.
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_idle_clock(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id)
|
|
{
|
|
return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
|
|
MSG_CLOCK_SW_STATE_UNREQ);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_put_clock() - Release a clock from our control back to TISCI
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
*
|
|
* NOTE: This clock must have been requested by get_clock previously.
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id)
|
|
{
|
|
return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
|
|
MSG_CLOCK_SW_STATE_AUTO);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_is_auto() - Is the clock being auto managed
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @req_state: state indicating if the clock is auto managed
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_is_auto(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id, bool *req_state)
|
|
{
|
|
u8 state = 0;
|
|
int ret;
|
|
|
|
if (!req_state)
|
|
return -EINVAL;
|
|
|
|
ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id, &state, NULL);
|
|
if (ret)
|
|
return ret;
|
|
|
|
*req_state = (state == MSG_CLOCK_SW_STATE_AUTO);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_is_on() - Is the clock ON
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @req_state: state indicating if the clock is managed by us and enabled
|
|
* @curr_state: state indicating if the clock is ready for operation
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_is_on(const struct ti_sci_handle *handle, u32 dev_id,
|
|
u32 clk_id, bool *req_state, bool *curr_state)
|
|
{
|
|
u8 c_state = 0, r_state = 0;
|
|
int ret;
|
|
|
|
if (!req_state && !curr_state)
|
|
return -EINVAL;
|
|
|
|
ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id,
|
|
&r_state, &c_state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (req_state)
|
|
*req_state = (r_state == MSG_CLOCK_SW_STATE_REQ);
|
|
if (curr_state)
|
|
*curr_state = (c_state == MSG_CLOCK_HW_STATE_READY);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_is_off() - Is the clock OFF
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @req_state: state indicating if the clock is managed by us and disabled
|
|
* @curr_state: state indicating if the clock is NOT ready for operation
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_is_off(const struct ti_sci_handle *handle, u32 dev_id,
|
|
u32 clk_id, bool *req_state, bool *curr_state)
|
|
{
|
|
u8 c_state = 0, r_state = 0;
|
|
int ret;
|
|
|
|
if (!req_state && !curr_state)
|
|
return -EINVAL;
|
|
|
|
ret = ti_sci_cmd_get_clock_state(handle, dev_id, clk_id,
|
|
&r_state, &c_state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (req_state)
|
|
*req_state = (r_state == MSG_CLOCK_SW_STATE_UNREQ);
|
|
if (curr_state)
|
|
*curr_state = (c_state == MSG_CLOCK_HW_STATE_NOT_READY);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_set_parent() - Set the clock source of a specific device clock
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @parent_id: Parent clock identifier to set
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_set_parent(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id, u32 parent_id)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_set_clock_parent *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_PARENT,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_set_clock_parent *)xfer->xfer_buf;
|
|
req->dev_id = dev_id;
|
|
if (clk_id < 255) {
|
|
req->clk_id = clk_id;
|
|
} else {
|
|
req->clk_id = 255;
|
|
req->clk_id_32 = clk_id;
|
|
}
|
|
if (parent_id < 255) {
|
|
req->parent_id = parent_id;
|
|
} else {
|
|
req->parent_id = 255;
|
|
req->parent_id_32 = parent_id;
|
|
}
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_get_parent() - Get current parent clock source
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @parent_id: Current clock parent
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_get_parent(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id, u32 *parent_id)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_get_clock_parent *req;
|
|
struct ti_sci_msg_resp_get_clock_parent *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle || !parent_id)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_PARENT,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_get_clock_parent *)xfer->xfer_buf;
|
|
req->dev_id = dev_id;
|
|
if (clk_id < 255) {
|
|
req->clk_id = clk_id;
|
|
} else {
|
|
req->clk_id = 255;
|
|
req->clk_id_32 = clk_id;
|
|
}
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_resp_get_clock_parent *)xfer->xfer_buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp)) {
|
|
ret = -ENODEV;
|
|
} else {
|
|
if (resp->parent_id < 255)
|
|
*parent_id = resp->parent_id;
|
|
else
|
|
*parent_id = resp->parent_id_32;
|
|
}
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_get_num_parents() - Get num parents of the current clk source
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @num_parents: Returns he number of parents to the current clock.
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_get_num_parents(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id,
|
|
u32 *num_parents)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_get_clock_num_parents *req;
|
|
struct ti_sci_msg_resp_get_clock_num_parents *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle || !num_parents)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_NUM_CLOCK_PARENTS,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_get_clock_num_parents *)xfer->xfer_buf;
|
|
req->dev_id = dev_id;
|
|
if (clk_id < 255) {
|
|
req->clk_id = clk_id;
|
|
} else {
|
|
req->clk_id = 255;
|
|
req->clk_id_32 = clk_id;
|
|
}
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_resp_get_clock_num_parents *)xfer->xfer_buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp)) {
|
|
ret = -ENODEV;
|
|
} else {
|
|
if (resp->num_parents < 255)
|
|
*num_parents = resp->num_parents;
|
|
else
|
|
*num_parents = resp->num_parents_32;
|
|
}
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_get_match_freq() - Find a good match for frequency
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @match_freq: Frequency match in Hz response.
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_get_match_freq(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id, u64 min_freq,
|
|
u64 target_freq, u64 max_freq,
|
|
u64 *match_freq)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_query_clock_freq *req;
|
|
struct ti_sci_msg_resp_query_clock_freq *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle || !match_freq)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_QUERY_CLOCK_FREQ,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_query_clock_freq *)xfer->xfer_buf;
|
|
req->dev_id = dev_id;
|
|
if (clk_id < 255) {
|
|
req->clk_id = clk_id;
|
|
} else {
|
|
req->clk_id = 255;
|
|
req->clk_id_32 = clk_id;
|
|
}
|
|
req->min_freq_hz = min_freq;
|
|
req->target_freq_hz = target_freq;
|
|
req->max_freq_hz = max_freq;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_resp_query_clock_freq *)xfer->xfer_buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp))
|
|
ret = -ENODEV;
|
|
else
|
|
*match_freq = resp->freq_hz;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_set_freq() - Set a frequency for clock
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_set_freq(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id, u64 min_freq,
|
|
u64 target_freq, u64 max_freq)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_set_clock_freq *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CLOCK_FREQ,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_set_clock_freq *)xfer->xfer_buf;
|
|
req->dev_id = dev_id;
|
|
if (clk_id < 255) {
|
|
req->clk_id = clk_id;
|
|
} else {
|
|
req->clk_id = 255;
|
|
req->clk_id_32 = clk_id;
|
|
}
|
|
req->min_freq_hz = min_freq;
|
|
req->target_freq_hz = target_freq;
|
|
req->max_freq_hz = max_freq;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_clk_get_freq() - Get current frequency
|
|
* @handle: pointer to TI SCI handle
|
|
* @dev_id: Device identifier this request is for
|
|
* @clk_id: 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.
|
|
* @freq: Currently frequency in Hz
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_clk_get_freq(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u32 clk_id, u64 *freq)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_get_clock_freq *req;
|
|
struct ti_sci_msg_resp_get_clock_freq *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle || !freq)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_CLOCK_FREQ,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_get_clock_freq *)xfer->xfer_buf;
|
|
req->dev_id = dev_id;
|
|
if (clk_id < 255) {
|
|
req->clk_id = clk_id;
|
|
} else {
|
|
req->clk_id = 255;
|
|
req->clk_id_32 = clk_id;
|
|
}
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_resp_get_clock_freq *)xfer->xfer_buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp))
|
|
ret = -ENODEV;
|
|
else
|
|
*freq = resp->freq_hz;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_msg_req_reboot *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SYS_RESET,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_reboot *)xfer->xfer_buf;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp))
|
|
ret = -ENODEV;
|
|
else
|
|
ret = 0;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ti_sci_get_resource_type(struct ti_sci_info *info, u16 dev_id,
|
|
u16 *type)
|
|
{
|
|
struct ti_sci_rm_type_map *rm_type_map = info->desc->rm_type_map;
|
|
bool found = false;
|
|
int i;
|
|
|
|
/* If map is not provided then assume dev_id is used as type */
|
|
if (!rm_type_map) {
|
|
*type = dev_id;
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0; rm_type_map[i].dev_id; i++) {
|
|
if (rm_type_map[i].dev_id == dev_id) {
|
|
*type = rm_type_map[i].type;
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_get_resource_range - Helper to get a range of resources assigned
|
|
* to a host. Resource is uniquely identified by
|
|
* type and subtype.
|
|
* @handle: Pointer to TISCI handle.
|
|
* @dev_id: TISCI device ID.
|
|
* @subtype: Resource assignment subtype that is being requested
|
|
* from the given device.
|
|
* @s_host: Host processor ID to which the resources are allocated
|
|
* @range_start: Start index of the resource range
|
|
* @range_num: Number of resources in the range
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u8 subtype, u8 s_host,
|
|
u16 *range_start, u16 *range_num)
|
|
{
|
|
struct ti_sci_msg_resp_get_resource_range *resp;
|
|
struct ti_sci_msg_req_get_resource_range *req;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
u16 type;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_RESOURCE_RANGE,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = ti_sci_get_resource_type(info, dev_id, &type);
|
|
if (ret) {
|
|
dev_err(dev, "rm type lookup failed for %u\n", dev_id);
|
|
goto fail;
|
|
}
|
|
|
|
req = (struct ti_sci_msg_req_get_resource_range *)xfer->xfer_buf;
|
|
req->secondary_host = s_host;
|
|
req->type = type & MSG_RM_RESOURCE_TYPE_MASK;
|
|
req->subtype = subtype & MSG_RM_RESOURCE_SUBTYPE_MASK;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_resp_get_resource_range *)xfer->xfer_buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp)) {
|
|
ret = -ENODEV;
|
|
} else if (!resp->range_start && !resp->range_num) {
|
|
ret = -ENODEV;
|
|
} else {
|
|
*range_start = resp->range_start;
|
|
*range_num = resp->range_num;
|
|
};
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_get_resource_range - Get a range of resources assigned to host
|
|
* that is same as ti sci interface host.
|
|
* @handle: Pointer to TISCI handle.
|
|
* @dev_id: TISCI device ID.
|
|
* @subtype: Resource assignment subtype that is being requested
|
|
* from the given device.
|
|
* @range_start: Start index of the resource range
|
|
* @range_num: Number of resources in the range
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u8 subtype,
|
|
u16 *range_start, u16 *range_num)
|
|
{
|
|
return ti_sci_get_resource_range(handle, dev_id, subtype,
|
|
TI_SCI_IRQ_SECONDARY_HOST_INVALID,
|
|
range_start, range_num);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_get_resource_range_from_shost - Get a range of resources
|
|
* assigned to a specified host.
|
|
* @handle: Pointer to TISCI handle.
|
|
* @dev_id: TISCI device ID.
|
|
* @subtype: Resource assignment subtype that is being requested
|
|
* from the given device.
|
|
* @s_host: Host processor ID to which the resources are allocated
|
|
* @range_start: Start index of the resource range
|
|
* @range_num: Number of resources in the range
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static
|
|
int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle,
|
|
u32 dev_id, u8 subtype, u8 s_host,
|
|
u16 *range_start, u16 *range_num)
|
|
{
|
|
return ti_sci_get_resource_range(handle, dev_id, subtype, s_host,
|
|
range_start, range_num);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_manage_irq() - Helper api to configure/release the irq route between
|
|
* the requested source and destination
|
|
* @handle: Pointer to TISCI handle.
|
|
* @valid_params: Bit fields defining the validity of certain params
|
|
* @src_id: Device ID of the IRQ source
|
|
* @src_index: IRQ source index within the source device
|
|
* @dst_id: Device ID of the IRQ destination
|
|
* @dst_host_irq: IRQ number of the destination device
|
|
* @ia_id: Device ID of the IA, if the IRQ flows through this IA
|
|
* @vint: Virtual interrupt to be used within the IA
|
|
* @global_event: Global event number to be used for the requesting event
|
|
* @vint_status_bit: Virtual interrupt status bit to be used for the event
|
|
* @s_host: Secondary host ID to which the irq/event is being
|
|
* requested for.
|
|
* @type: Request type irq set or release.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_manage_irq(const struct ti_sci_handle *handle,
|
|
u32 valid_params, u16 src_id, u16 src_index,
|
|
u16 dst_id, u16 dst_host_irq, u16 ia_id, u16 vint,
|
|
u16 global_event, u8 vint_status_bit, u8 s_host,
|
|
u16 type)
|
|
{
|
|
struct ti_sci_msg_req_manage_irq *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, type, TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_manage_irq *)xfer->xfer_buf;
|
|
req->valid_params = valid_params;
|
|
req->src_id = src_id;
|
|
req->src_index = src_index;
|
|
req->dst_id = dst_id;
|
|
req->dst_host_irq = dst_host_irq;
|
|
req->ia_id = ia_id;
|
|
req->vint = vint;
|
|
req->global_event = global_event;
|
|
req->vint_status_bit = vint_status_bit;
|
|
req->secondary_host = s_host;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_set_irq() - Helper api to configure the irq route between the
|
|
* requested source and destination
|
|
* @handle: Pointer to TISCI handle.
|
|
* @valid_params: Bit fields defining the validity of certain params
|
|
* @src_id: Device ID of the IRQ source
|
|
* @src_index: IRQ source index within the source device
|
|
* @dst_id: Device ID of the IRQ destination
|
|
* @dst_host_irq: IRQ number of the destination device
|
|
* @ia_id: Device ID of the IA, if the IRQ flows through this IA
|
|
* @vint: Virtual interrupt to be used within the IA
|
|
* @global_event: Global event number to be used for the requesting event
|
|
* @vint_status_bit: Virtual interrupt status bit to be used for the event
|
|
* @s_host: Secondary host ID to which the irq/event is being
|
|
* requested for.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_set_irq(const struct ti_sci_handle *handle, u32 valid_params,
|
|
u16 src_id, u16 src_index, u16 dst_id,
|
|
u16 dst_host_irq, u16 ia_id, u16 vint,
|
|
u16 global_event, u8 vint_status_bit, u8 s_host)
|
|
{
|
|
pr_debug("%s: IRQ set with valid_params = 0x%x from src = %d, index = %d, to dst = %d, irq = %d,via ia_id = %d, vint = %d, global event = %d,status_bit = %d\n",
|
|
__func__, valid_params, src_id, src_index,
|
|
dst_id, dst_host_irq, ia_id, vint, global_event,
|
|
vint_status_bit);
|
|
|
|
return ti_sci_manage_irq(handle, valid_params, src_id, src_index,
|
|
dst_id, dst_host_irq, ia_id, vint,
|
|
global_event, vint_status_bit, s_host,
|
|
TI_SCI_MSG_SET_IRQ);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_free_irq() - Helper api to free the irq route between the
|
|
* requested source and destination
|
|
* @handle: Pointer to TISCI handle.
|
|
* @valid_params: Bit fields defining the validity of certain params
|
|
* @src_id: Device ID of the IRQ source
|
|
* @src_index: IRQ source index within the source device
|
|
* @dst_id: Device ID of the IRQ destination
|
|
* @dst_host_irq: IRQ number of the destination device
|
|
* @ia_id: Device ID of the IA, if the IRQ flows through this IA
|
|
* @vint: Virtual interrupt to be used within the IA
|
|
* @global_event: Global event number to be used for the requesting event
|
|
* @vint_status_bit: Virtual interrupt status bit to be used for the event
|
|
* @s_host: Secondary host ID to which the irq/event is being
|
|
* requested for.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_free_irq(const struct ti_sci_handle *handle, u32 valid_params,
|
|
u16 src_id, u16 src_index, u16 dst_id,
|
|
u16 dst_host_irq, u16 ia_id, u16 vint,
|
|
u16 global_event, u8 vint_status_bit, u8 s_host)
|
|
{
|
|
pr_debug("%s: IRQ release with valid_params = 0x%x from src = %d, index = %d, to dst = %d, irq = %d,via ia_id = %d, vint = %d, global event = %d,status_bit = %d\n",
|
|
__func__, valid_params, src_id, src_index,
|
|
dst_id, dst_host_irq, ia_id, vint, global_event,
|
|
vint_status_bit);
|
|
|
|
return ti_sci_manage_irq(handle, valid_params, src_id, src_index,
|
|
dst_id, dst_host_irq, ia_id, vint,
|
|
global_event, vint_status_bit, s_host,
|
|
TI_SCI_MSG_FREE_IRQ);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_set_irq() - Configure a host irq route between the requested
|
|
* source and destination.
|
|
* @handle: Pointer to TISCI handle.
|
|
* @src_id: Device ID of the IRQ source
|
|
* @src_index: IRQ source index within the source device
|
|
* @dst_id: Device ID of the IRQ destination
|
|
* @dst_host_irq: IRQ number of the destination device
|
|
* @vint_irq: Boolean specifying if this interrupt belongs to
|
|
* Interrupt Aggregator.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_set_irq(const struct ti_sci_handle *handle, u16 src_id,
|
|
u16 src_index, u16 dst_id, u16 dst_host_irq)
|
|
{
|
|
u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID;
|
|
|
|
return ti_sci_set_irq(handle, valid_params, src_id, src_index, dst_id,
|
|
dst_host_irq, 0, 0, 0, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_set_event_map() - Configure an event based irq route between the
|
|
* requested source and Interrupt Aggregator.
|
|
* @handle: Pointer to TISCI handle.
|
|
* @src_id: Device ID of the IRQ source
|
|
* @src_index: IRQ source index within the source device
|
|
* @ia_id: Device ID of the IA, if the IRQ flows through this IA
|
|
* @vint: Virtual interrupt to be used within the IA
|
|
* @global_event: Global event number to be used for the requesting event
|
|
* @vint_status_bit: Virtual interrupt status bit to be used for the event
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_set_event_map(const struct ti_sci_handle *handle,
|
|
u16 src_id, u16 src_index, u16 ia_id,
|
|
u16 vint, u16 global_event,
|
|
u8 vint_status_bit)
|
|
{
|
|
u32 valid_params = MSG_FLAG_IA_ID_VALID | MSG_FLAG_VINT_VALID |
|
|
MSG_FLAG_GLB_EVNT_VALID |
|
|
MSG_FLAG_VINT_STS_BIT_VALID;
|
|
|
|
return ti_sci_set_irq(handle, valid_params, src_id, src_index, 0, 0,
|
|
ia_id, vint, global_event, vint_status_bit, 0);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_free_irq() - Free a host irq route between the between the
|
|
* requested source and destination.
|
|
* @handle: Pointer to TISCI handle.
|
|
* @src_id: Device ID of the IRQ source
|
|
* @src_index: IRQ source index within the source device
|
|
* @dst_id: Device ID of the IRQ destination
|
|
* @dst_host_irq: IRQ number of the destination device
|
|
* @vint_irq: Boolean specifying if this interrupt belongs to
|
|
* Interrupt Aggregator.
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_free_irq(const struct ti_sci_handle *handle, u16 src_id,
|
|
u16 src_index, u16 dst_id, u16 dst_host_irq)
|
|
{
|
|
u32 valid_params = MSG_FLAG_DST_ID_VALID | MSG_FLAG_DST_HOST_IRQ_VALID;
|
|
|
|
return ti_sci_free_irq(handle, valid_params, src_id, src_index, dst_id,
|
|
dst_host_irq, 0, 0, 0, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_free_event_map() - Free an event map between the requested source
|
|
* and Interrupt Aggregator.
|
|
* @handle: Pointer to TISCI handle.
|
|
* @src_id: Device ID of the IRQ source
|
|
* @src_index: IRQ source index within the source device
|
|
* @ia_id: Device ID of the IA, if the IRQ flows through this IA
|
|
* @vint: Virtual interrupt to be used within the IA
|
|
* @global_event: Global event number to be used for the requesting event
|
|
* @vint_status_bit: Virtual interrupt status bit to be used for the event
|
|
*
|
|
* Return: 0 if all went fine, else return appropriate error.
|
|
*/
|
|
static int ti_sci_cmd_free_event_map(const struct ti_sci_handle *handle,
|
|
u16 src_id, u16 src_index, u16 ia_id,
|
|
u16 vint, u16 global_event,
|
|
u8 vint_status_bit)
|
|
{
|
|
u32 valid_params = MSG_FLAG_IA_ID_VALID |
|
|
MSG_FLAG_VINT_VALID | MSG_FLAG_GLB_EVNT_VALID |
|
|
MSG_FLAG_VINT_STS_BIT_VALID;
|
|
|
|
return ti_sci_free_irq(handle, valid_params, src_id, src_index, 0, 0,
|
|
ia_id, vint, global_event, vint_status_bit, 0);
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_ring_config() - configure RA ring
|
|
* @handle: Pointer to TI SCI handle.
|
|
* @valid_params: Bitfield defining validity of ring configuration
|
|
* parameters
|
|
* @nav_id: Device ID of Navigator Subsystem from which the ring is
|
|
* allocated
|
|
* @index: Ring index
|
|
* @addr_lo: The ring base address lo 32 bits
|
|
* @addr_hi: The ring base address hi 32 bits
|
|
* @count: Number of ring elements
|
|
* @mode: The mode of the ring
|
|
* @size: The ring element size.
|
|
* @order_id: Specifies the ring's bus order ID
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*
|
|
* See @ti_sci_msg_rm_ring_cfg_req for more info.
|
|
*/
|
|
static int ti_sci_cmd_ring_config(const struct ti_sci_handle *handle,
|
|
u32 valid_params, u16 nav_id, u16 index,
|
|
u32 addr_lo, u32 addr_hi, u32 count,
|
|
u8 mode, u8 size, u8 order_id)
|
|
{
|
|
struct ti_sci_msg_rm_ring_cfg_req *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR_OR_NULL(handle))
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_RING_CFG,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "RM_RA:Message config failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_rm_ring_cfg_req *)xfer->xfer_buf;
|
|
req->valid_params = valid_params;
|
|
req->nav_id = nav_id;
|
|
req->index = index;
|
|
req->addr_lo = addr_lo;
|
|
req->addr_hi = addr_hi;
|
|
req->count = count;
|
|
req->mode = mode;
|
|
req->size = size;
|
|
req->order_id = order_id;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "RM_RA:Mbox config send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
dev_dbg(dev, "RM_RA:config ring %u ret:%d\n", index, ret);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_ring_get_config() - get RA ring configuration
|
|
* @handle: Pointer to TI SCI handle.
|
|
* @nav_id: Device ID of Navigator Subsystem from which the ring is
|
|
* allocated
|
|
* @index: Ring index
|
|
* @addr_lo: Returns ring's base address lo 32 bits
|
|
* @addr_hi: Returns ring's base address hi 32 bits
|
|
* @count: Returns number of ring elements
|
|
* @mode: Returns mode of the ring
|
|
* @size: Returns ring element size
|
|
* @order_id: Returns ring's bus order ID
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*
|
|
* See @ti_sci_msg_rm_ring_get_cfg_req for more info.
|
|
*/
|
|
static int ti_sci_cmd_ring_get_config(const struct ti_sci_handle *handle,
|
|
u32 nav_id, u32 index, u8 *mode,
|
|
u32 *addr_lo, u32 *addr_hi,
|
|
u32 *count, u8 *size, u8 *order_id)
|
|
{
|
|
struct ti_sci_msg_rm_ring_get_cfg_resp *resp;
|
|
struct ti_sci_msg_rm_ring_get_cfg_req *req;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR_OR_NULL(handle))
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_RING_GET_CFG,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev,
|
|
"RM_RA:Message get config failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_rm_ring_get_cfg_req *)xfer->xfer_buf;
|
|
req->nav_id = nav_id;
|
|
req->index = index;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "RM_RA:Mbox get config send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_rm_ring_get_cfg_resp *)xfer->xfer_buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp)) {
|
|
ret = -ENODEV;
|
|
} else {
|
|
if (mode)
|
|
*mode = resp->mode;
|
|
if (addr_lo)
|
|
*addr_lo = resp->addr_lo;
|
|
if (addr_hi)
|
|
*addr_hi = resp->addr_hi;
|
|
if (count)
|
|
*count = resp->count;
|
|
if (size)
|
|
*size = resp->size;
|
|
if (order_id)
|
|
*order_id = resp->order_id;
|
|
};
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
dev_dbg(dev, "RM_RA:get config ring %u ret:%d\n", index, ret);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_rm_psil_pair() - Pair PSI-L source to destination thread
|
|
* @handle: Pointer to TI SCI handle.
|
|
* @nav_id: Device ID of Navigator Subsystem which should be used for
|
|
* pairing
|
|
* @src_thread: Source PSI-L thread ID
|
|
* @dst_thread: Destination PSI-L thread ID
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_rm_psil_pair(const struct ti_sci_handle *handle,
|
|
u32 nav_id, u32 src_thread, u32 dst_thread)
|
|
{
|
|
struct ti_sci_msg_psil_pair *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_PAIR,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_psil_pair *)xfer->xfer_buf;
|
|
req->nav_id = nav_id;
|
|
req->src_thread = src_thread;
|
|
req->dst_thread = dst_thread;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_rm_psil_unpair() - Unpair PSI-L source from destination thread
|
|
* @handle: Pointer to TI SCI handle.
|
|
* @nav_id: Device ID of Navigator Subsystem which should be used for
|
|
* unpairing
|
|
* @src_thread: Source PSI-L thread ID
|
|
* @dst_thread: Destination PSI-L thread ID
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_rm_psil_unpair(const struct ti_sci_handle *handle,
|
|
u32 nav_id, u32 src_thread, u32 dst_thread)
|
|
{
|
|
struct ti_sci_msg_psil_unpair *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_RM_PSIL_UNPAIR,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "RM_PSIL:Message reconfig failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_psil_unpair *)xfer->xfer_buf;
|
|
req->nav_id = nav_id;
|
|
req->src_thread = src_thread;
|
|
req->dst_thread = dst_thread;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "RM_PSIL:Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_rm_udmap_tx_ch_cfg() - Configure a UDMAP TX channel
|
|
* @handle: Pointer to TI SCI handle.
|
|
* @params: Pointer to ti_sci_msg_rm_udmap_tx_ch_cfg TX channel config
|
|
* structure
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*
|
|
* See @ti_sci_msg_rm_udmap_tx_ch_cfg and @ti_sci_msg_rm_udmap_tx_ch_cfg_req for
|
|
* more info.
|
|
*/
|
|
static int ti_sci_cmd_rm_udmap_tx_ch_cfg(const struct ti_sci_handle *handle,
|
|
const struct ti_sci_msg_rm_udmap_tx_ch_cfg *params)
|
|
{
|
|
struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR_OR_NULL(handle))
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_TX_CH_CFG,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message TX_CH_CFG alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_rm_udmap_tx_ch_cfg_req *)xfer->xfer_buf;
|
|
req->valid_params = params->valid_params;
|
|
req->nav_id = params->nav_id;
|
|
req->index = params->index;
|
|
req->tx_pause_on_err = params->tx_pause_on_err;
|
|
req->tx_filt_einfo = params->tx_filt_einfo;
|
|
req->tx_filt_pswords = params->tx_filt_pswords;
|
|
req->tx_atype = params->tx_atype;
|
|
req->tx_chan_type = params->tx_chan_type;
|
|
req->tx_supr_tdpkt = params->tx_supr_tdpkt;
|
|
req->tx_fetch_size = params->tx_fetch_size;
|
|
req->tx_credit_count = params->tx_credit_count;
|
|
req->txcq_qnum = params->txcq_qnum;
|
|
req->tx_priority = params->tx_priority;
|
|
req->tx_qos = params->tx_qos;
|
|
req->tx_orderid = params->tx_orderid;
|
|
req->fdepth = params->fdepth;
|
|
req->tx_sched_priority = params->tx_sched_priority;
|
|
req->tx_burst_size = params->tx_burst_size;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send TX_CH_CFG fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
dev_dbg(dev, "TX_CH_CFG: chn %u ret:%u\n", params->index, ret);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_rm_udmap_rx_ch_cfg() - Configure a UDMAP RX channel
|
|
* @handle: Pointer to TI SCI handle.
|
|
* @params: Pointer to ti_sci_msg_rm_udmap_rx_ch_cfg RX channel config
|
|
* structure
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*
|
|
* See @ti_sci_msg_rm_udmap_rx_ch_cfg and @ti_sci_msg_rm_udmap_rx_ch_cfg_req for
|
|
* more info.
|
|
*/
|
|
static int ti_sci_cmd_rm_udmap_rx_ch_cfg(const struct ti_sci_handle *handle,
|
|
const struct ti_sci_msg_rm_udmap_rx_ch_cfg *params)
|
|
{
|
|
struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR_OR_NULL(handle))
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_RX_CH_CFG,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message RX_CH_CFG alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_rm_udmap_rx_ch_cfg_req *)xfer->xfer_buf;
|
|
req->valid_params = params->valid_params;
|
|
req->nav_id = params->nav_id;
|
|
req->index = params->index;
|
|
req->rx_fetch_size = params->rx_fetch_size;
|
|
req->rxcq_qnum = params->rxcq_qnum;
|
|
req->rx_priority = params->rx_priority;
|
|
req->rx_qos = params->rx_qos;
|
|
req->rx_orderid = params->rx_orderid;
|
|
req->rx_sched_priority = params->rx_sched_priority;
|
|
req->flowid_start = params->flowid_start;
|
|
req->flowid_cnt = params->flowid_cnt;
|
|
req->rx_pause_on_err = params->rx_pause_on_err;
|
|
req->rx_atype = params->rx_atype;
|
|
req->rx_chan_type = params->rx_chan_type;
|
|
req->rx_ignore_short = params->rx_ignore_short;
|
|
req->rx_ignore_long = params->rx_ignore_long;
|
|
req->rx_burst_size = params->rx_burst_size;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send RX_CH_CFG fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
dev_dbg(dev, "RX_CH_CFG: chn %u ret:%d\n", params->index, ret);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_rm_udmap_rx_flow_cfg() - Configure UDMAP RX FLOW
|
|
* @handle: Pointer to TI SCI handle.
|
|
* @params: Pointer to ti_sci_msg_rm_udmap_flow_cfg RX FLOW config
|
|
* structure
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*
|
|
* See @ti_sci_msg_rm_udmap_flow_cfg and @ti_sci_msg_rm_udmap_flow_cfg_req for
|
|
* more info.
|
|
*/
|
|
static int ti_sci_cmd_rm_udmap_rx_flow_cfg(const struct ti_sci_handle *handle,
|
|
const struct ti_sci_msg_rm_udmap_flow_cfg *params)
|
|
{
|
|
struct ti_sci_msg_rm_udmap_flow_cfg_req *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (IS_ERR_OR_NULL(handle))
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TISCI_MSG_RM_UDMAP_FLOW_CFG,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "RX_FL_CFG: Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_rm_udmap_flow_cfg_req *)xfer->xfer_buf;
|
|
req->valid_params = params->valid_params;
|
|
req->nav_id = params->nav_id;
|
|
req->flow_index = params->flow_index;
|
|
req->rx_einfo_present = params->rx_einfo_present;
|
|
req->rx_psinfo_present = params->rx_psinfo_present;
|
|
req->rx_error_handling = params->rx_error_handling;
|
|
req->rx_desc_type = params->rx_desc_type;
|
|
req->rx_sop_offset = params->rx_sop_offset;
|
|
req->rx_dest_qnum = params->rx_dest_qnum;
|
|
req->rx_src_tag_hi = params->rx_src_tag_hi;
|
|
req->rx_src_tag_lo = params->rx_src_tag_lo;
|
|
req->rx_dest_tag_hi = params->rx_dest_tag_hi;
|
|
req->rx_dest_tag_lo = params->rx_dest_tag_lo;
|
|
req->rx_src_tag_hi_sel = params->rx_src_tag_hi_sel;
|
|
req->rx_src_tag_lo_sel = params->rx_src_tag_lo_sel;
|
|
req->rx_dest_tag_hi_sel = params->rx_dest_tag_hi_sel;
|
|
req->rx_dest_tag_lo_sel = params->rx_dest_tag_lo_sel;
|
|
req->rx_fdq0_sz0_qnum = params->rx_fdq0_sz0_qnum;
|
|
req->rx_fdq1_qnum = params->rx_fdq1_qnum;
|
|
req->rx_fdq2_qnum = params->rx_fdq2_qnum;
|
|
req->rx_fdq3_qnum = params->rx_fdq3_qnum;
|
|
req->rx_ps_location = params->rx_ps_location;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "RX_FL_CFG: Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->xfer_buf;
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
dev_dbg(info->dev, "RX_FL_CFG: %u ret:%d\n", params->flow_index, ret);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_proc_request() - Command to request a physical processor control
|
|
* @handle: Pointer to TI SCI handle
|
|
* @proc_id: Processor ID this request is for
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_proc_request(const struct ti_sci_handle *handle,
|
|
u8 proc_id)
|
|
{
|
|
struct ti_sci_msg_req_proc_request *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (!handle)
|
|
return -EINVAL;
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_REQUEST,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_proc_request *)xfer->xfer_buf;
|
|
req->processor_id = proc_id;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_proc_release() - Command to release a physical processor control
|
|
* @handle: Pointer to TI SCI handle
|
|
* @proc_id: Processor ID this request is for
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_proc_release(const struct ti_sci_handle *handle,
|
|
u8 proc_id)
|
|
{
|
|
struct ti_sci_msg_req_proc_release *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (!handle)
|
|
return -EINVAL;
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_RELEASE,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_proc_release *)xfer->xfer_buf;
|
|
req->processor_id = proc_id;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_proc_handover() - Command to handover a physical processor
|
|
* control to a host in the processor's access
|
|
* control list.
|
|
* @handle: Pointer to TI SCI handle
|
|
* @proc_id: Processor ID this request is for
|
|
* @host_id: Host ID to get the control of the processor
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_proc_handover(const struct ti_sci_handle *handle,
|
|
u8 proc_id, u8 host_id)
|
|
{
|
|
struct ti_sci_msg_req_proc_handover *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (!handle)
|
|
return -EINVAL;
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_PROC_HANDOVER,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_proc_handover *)xfer->xfer_buf;
|
|
req->processor_id = proc_id;
|
|
req->host_id = host_id;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_proc_set_config() - Command to set the processor boot
|
|
* configuration flags
|
|
* @handle: Pointer to TI SCI handle
|
|
* @proc_id: Processor ID this request is for
|
|
* @config_flags_set: Configuration flags to be set
|
|
* @config_flags_clear: Configuration flags to be cleared.
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_proc_set_config(const struct ti_sci_handle *handle,
|
|
u8 proc_id, u64 bootvector,
|
|
u32 config_flags_set,
|
|
u32 config_flags_clear)
|
|
{
|
|
struct ti_sci_msg_req_set_config *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (!handle)
|
|
return -EINVAL;
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CONFIG,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_set_config *)xfer->xfer_buf;
|
|
req->processor_id = proc_id;
|
|
req->bootvector_low = bootvector & TI_SCI_ADDR_LOW_MASK;
|
|
req->bootvector_high = (bootvector & TI_SCI_ADDR_HIGH_MASK) >>
|
|
TI_SCI_ADDR_HIGH_SHIFT;
|
|
req->config_flags_set = config_flags_set;
|
|
req->config_flags_clear = config_flags_clear;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_proc_set_control() - Command to set the processor boot
|
|
* control flags
|
|
* @handle: Pointer to TI SCI handle
|
|
* @proc_id: Processor ID this request is for
|
|
* @control_flags_set: Control flags to be set
|
|
* @control_flags_clear: Control flags to be cleared
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_proc_set_control(const struct ti_sci_handle *handle,
|
|
u8 proc_id, u32 control_flags_set,
|
|
u32 control_flags_clear)
|
|
{
|
|
struct ti_sci_msg_req_set_ctrl *req;
|
|
struct ti_sci_msg_hdr *resp;
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (!handle)
|
|
return -EINVAL;
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_SET_CTRL,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_set_ctrl *)xfer->xfer_buf;
|
|
req->processor_id = proc_id;
|
|
req->control_flags_set = control_flags_set;
|
|
req->control_flags_clear = control_flags_clear;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
|
|
|
|
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_cmd_get_boot_status() - Command to get the processor boot status
|
|
* @handle: Pointer to TI SCI handle
|
|
* @proc_id: Processor ID this request is for
|
|
*
|
|
* Return: 0 if all went well, else returns appropriate error value.
|
|
*/
|
|
static int ti_sci_cmd_proc_get_status(const struct ti_sci_handle *handle,
|
|
u8 proc_id, u64 *bv, u32 *cfg_flags,
|
|
u32 *ctrl_flags, u32 *sts_flags)
|
|
{
|
|
struct ti_sci_msg_resp_get_status *resp;
|
|
struct ti_sci_msg_req_get_status *req;
|
|
struct ti_sci_info *info;
|
|
struct ti_sci_xfer *xfer;
|
|
struct device *dev;
|
|
int ret = 0;
|
|
|
|
if (!handle)
|
|
return -EINVAL;
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
dev = info->dev;
|
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_STATUS,
|
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
|
|
sizeof(*req), sizeof(*resp));
|
|
if (IS_ERR(xfer)) {
|
|
ret = PTR_ERR(xfer);
|
|
dev_err(dev, "Message alloc failed(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
req = (struct ti_sci_msg_req_get_status *)xfer->xfer_buf;
|
|
req->processor_id = proc_id;
|
|
|
|
ret = ti_sci_do_xfer(info, xfer);
|
|
if (ret) {
|
|
dev_err(dev, "Mbox send fail %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
resp = (struct ti_sci_msg_resp_get_status *)xfer->tx_message.buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp)) {
|
|
ret = -ENODEV;
|
|
} else {
|
|
*bv = (resp->bootvector_low & TI_SCI_ADDR_LOW_MASK) |
|
|
(((u64)resp->bootvector_high << TI_SCI_ADDR_HIGH_SHIFT) &
|
|
TI_SCI_ADDR_HIGH_MASK);
|
|
*cfg_flags = resp->config_flags;
|
|
*ctrl_flags = resp->control_flags;
|
|
*sts_flags = resp->status_flags;
|
|
}
|
|
|
|
fail:
|
|
ti_sci_put_one_xfer(&info->minfo, xfer);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* ti_sci_setup_ops() - Setup the operations structures
|
|
* @info: pointer to TISCI pointer
|
|
*/
|
|
static void ti_sci_setup_ops(struct ti_sci_info *info)
|
|
{
|
|
struct ti_sci_ops *ops = &info->handle.ops;
|
|
struct ti_sci_core_ops *core_ops = &ops->core_ops;
|
|
struct ti_sci_dev_ops *dops = &ops->dev_ops;
|
|
struct ti_sci_clk_ops *cops = &ops->clk_ops;
|
|
struct ti_sci_rm_core_ops *rm_core_ops = &ops->rm_core_ops;
|
|
struct ti_sci_rm_irq_ops *iops = &ops->rm_irq_ops;
|
|
struct ti_sci_rm_ringacc_ops *rops = &ops->rm_ring_ops;
|
|
struct ti_sci_rm_psil_ops *psilops = &ops->rm_psil_ops;
|
|
struct ti_sci_rm_udmap_ops *udmap_ops = &ops->rm_udmap_ops;
|
|
struct ti_sci_proc_ops *pops = &ops->proc_ops;
|
|
|
|
core_ops->reboot_device = ti_sci_cmd_core_reboot;
|
|
|
|
dops->get_device = ti_sci_cmd_get_device;
|
|
dops->get_device_exclusive = ti_sci_cmd_get_device_exclusive;
|
|
dops->idle_device = ti_sci_cmd_idle_device;
|
|
dops->idle_device_exclusive = ti_sci_cmd_idle_device_exclusive;
|
|
dops->put_device = ti_sci_cmd_put_device;
|
|
|
|
dops->is_valid = ti_sci_cmd_dev_is_valid;
|
|
dops->get_context_loss_count = ti_sci_cmd_dev_get_clcnt;
|
|
dops->is_idle = ti_sci_cmd_dev_is_idle;
|
|
dops->is_stop = ti_sci_cmd_dev_is_stop;
|
|
dops->is_on = ti_sci_cmd_dev_is_on;
|
|
dops->is_transitioning = ti_sci_cmd_dev_is_trans;
|
|
dops->set_device_resets = ti_sci_cmd_set_device_resets;
|
|
dops->get_device_resets = ti_sci_cmd_get_device_resets;
|
|
|
|
cops->get_clock = ti_sci_cmd_get_clock;
|
|
cops->idle_clock = ti_sci_cmd_idle_clock;
|
|
cops->put_clock = ti_sci_cmd_put_clock;
|
|
cops->is_auto = ti_sci_cmd_clk_is_auto;
|
|
cops->is_on = ti_sci_cmd_clk_is_on;
|
|
cops->is_off = ti_sci_cmd_clk_is_off;
|
|
|
|
cops->set_parent = ti_sci_cmd_clk_set_parent;
|
|
cops->get_parent = ti_sci_cmd_clk_get_parent;
|
|
cops->get_num_parents = ti_sci_cmd_clk_get_num_parents;
|
|
|
|
cops->get_best_match_freq = ti_sci_cmd_clk_get_match_freq;
|
|
cops->set_freq = ti_sci_cmd_clk_set_freq;
|
|
cops->get_freq = ti_sci_cmd_clk_get_freq;
|
|
|
|
rm_core_ops->get_range = ti_sci_cmd_get_resource_range;
|
|
rm_core_ops->get_range_from_shost =
|
|
ti_sci_cmd_get_resource_range_from_shost;
|
|
|
|
iops->set_irq = ti_sci_cmd_set_irq;
|
|
iops->set_event_map = ti_sci_cmd_set_event_map;
|
|
iops->free_irq = ti_sci_cmd_free_irq;
|
|
iops->free_event_map = ti_sci_cmd_free_event_map;
|
|
|
|
rops->config = ti_sci_cmd_ring_config;
|
|
rops->get_config = ti_sci_cmd_ring_get_config;
|
|
|
|
psilops->pair = ti_sci_cmd_rm_psil_pair;
|
|
psilops->unpair = ti_sci_cmd_rm_psil_unpair;
|
|
|
|
udmap_ops->tx_ch_cfg = ti_sci_cmd_rm_udmap_tx_ch_cfg;
|
|
udmap_ops->rx_ch_cfg = ti_sci_cmd_rm_udmap_rx_ch_cfg;
|
|
udmap_ops->rx_flow_cfg = ti_sci_cmd_rm_udmap_rx_flow_cfg;
|
|
|
|
pops->request = ti_sci_cmd_proc_request;
|
|
pops->release = ti_sci_cmd_proc_release;
|
|
pops->handover = ti_sci_cmd_proc_handover;
|
|
pops->set_config = ti_sci_cmd_proc_set_config;
|
|
pops->set_control = ti_sci_cmd_proc_set_control;
|
|
pops->get_status = ti_sci_cmd_proc_get_status;
|
|
}
|
|
|
|
/**
|
|
* ti_sci_get_handle() - Get the TI SCI handle for a device
|
|
* @dev: Pointer to device for which we want SCI handle
|
|
*
|
|
* NOTE: The function does not track individual clients of the framework
|
|
* and is expected to be maintained by caller of TI SCI protocol library.
|
|
* ti_sci_put_handle must be balanced with successful ti_sci_get_handle
|
|
* Return: pointer to handle if successful, else:
|
|
* -EPROBE_DEFER if the instance is not ready
|
|
* -ENODEV if the required node handler is missing
|
|
* -EINVAL if invalid conditions are encountered.
|
|
*/
|
|
const struct ti_sci_handle *ti_sci_get_handle(struct device *dev)
|
|
{
|
|
struct device_node *ti_sci_np;
|
|
struct list_head *p;
|
|
struct ti_sci_handle *handle = NULL;
|
|
struct ti_sci_info *info;
|
|
|
|
if (!dev) {
|
|
pr_err("I need a device pointer\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
ti_sci_np = of_get_parent(dev->of_node);
|
|
if (!ti_sci_np) {
|
|
dev_err(dev, "No OF information\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
mutex_lock(&ti_sci_list_mutex);
|
|
list_for_each(p, &ti_sci_list) {
|
|
info = list_entry(p, struct ti_sci_info, node);
|
|
if (ti_sci_np == info->dev->of_node) {
|
|
handle = &info->handle;
|
|
info->users++;
|
|
break;
|
|
}
|
|
}
|
|
mutex_unlock(&ti_sci_list_mutex);
|
|
of_node_put(ti_sci_np);
|
|
|
|
if (!handle)
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
|
|
return handle;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ti_sci_get_handle);
|
|
|
|
/**
|
|
* ti_sci_put_handle() - Release the handle acquired by ti_sci_get_handle
|
|
* @handle: Handle acquired by ti_sci_get_handle
|
|
*
|
|
* NOTE: The function does not track individual clients of the framework
|
|
* and is expected to be maintained by caller of TI SCI protocol library.
|
|
* ti_sci_put_handle must be balanced with successful ti_sci_get_handle
|
|
*
|
|
* Return: 0 is successfully released
|
|
* if an error pointer was passed, it returns the error value back,
|
|
* if null was passed, it returns -EINVAL;
|
|
*/
|
|
int ti_sci_put_handle(const struct ti_sci_handle *handle)
|
|
{
|
|
struct ti_sci_info *info;
|
|
|
|
if (IS_ERR(handle))
|
|
return PTR_ERR(handle);
|
|
if (!handle)
|
|
return -EINVAL;
|
|
|
|
info = handle_to_ti_sci_info(handle);
|
|
mutex_lock(&ti_sci_list_mutex);
|
|
if (!WARN_ON(!info->users))
|
|
info->users--;
|
|
mutex_unlock(&ti_sci_list_mutex);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ti_sci_put_handle);
|
|
|
|
static void devm_ti_sci_release(struct device *dev, void *res)
|
|
{
|
|
const struct ti_sci_handle **ptr = res;
|
|
const struct ti_sci_handle *handle = *ptr;
|
|
int ret;
|
|
|
|
ret = ti_sci_put_handle(handle);
|
|
if (ret)
|
|
dev_err(dev, "failed to put handle %d\n", ret);
|
|
}
|
|
|
|
/**
|
|
* devm_ti_sci_get_handle() - Managed get handle
|
|
* @dev: device for which we want SCI handle for.
|
|
*
|
|
* NOTE: This releases the handle once the device resources are
|
|
* no longer needed. MUST NOT BE released with ti_sci_put_handle.
|
|
* The function does not track individual clients of the framework
|
|
* and is expected to be maintained by caller of TI SCI protocol library.
|
|
*
|
|
* Return: 0 if all went fine, else corresponding error.
|
|
*/
|
|
const struct ti_sci_handle *devm_ti_sci_get_handle(struct device *dev)
|
|
{
|
|
const struct ti_sci_handle **ptr;
|
|
const struct ti_sci_handle *handle;
|
|
|
|
ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL);
|
|
if (!ptr)
|
|
return ERR_PTR(-ENOMEM);
|
|
handle = ti_sci_get_handle(dev);
|
|
|
|
if (!IS_ERR(handle)) {
|
|
*ptr = handle;
|
|
devres_add(dev, ptr);
|
|
} else {
|
|
devres_free(ptr);
|
|
}
|
|
|
|
return handle;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devm_ti_sci_get_handle);
|
|
|
|
/**
|
|
* ti_sci_get_by_phandle() - Get the TI SCI handle using DT phandle
|
|
* @np: device node
|
|
* @property: property name containing phandle on TISCI node
|
|
*
|
|
* NOTE: The function does not track individual clients of the framework
|
|
* and is expected to be maintained by caller of TI SCI protocol library.
|
|
* ti_sci_put_handle must be balanced with successful ti_sci_get_by_phandle
|
|
* Return: pointer to handle if successful, else:
|
|
* -EPROBE_DEFER if the instance is not ready
|
|
* -ENODEV if the required node handler is missing
|
|
* -EINVAL if invalid conditions are encountered.
|
|
*/
|
|
const struct ti_sci_handle *ti_sci_get_by_phandle(struct device_node *np,
|
|
const char *property)
|
|
{
|
|
struct ti_sci_handle *handle = NULL;
|
|
struct device_node *ti_sci_np;
|
|
struct ti_sci_info *info;
|
|
struct list_head *p;
|
|
|
|
if (!np) {
|
|
pr_err("I need a device pointer\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
ti_sci_np = of_parse_phandle(np, property, 0);
|
|
if (!ti_sci_np)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
mutex_lock(&ti_sci_list_mutex);
|
|
list_for_each(p, &ti_sci_list) {
|
|
info = list_entry(p, struct ti_sci_info, node);
|
|
if (ti_sci_np == info->dev->of_node) {
|
|
handle = &info->handle;
|
|
info->users++;
|
|
break;
|
|
}
|
|
}
|
|
mutex_unlock(&ti_sci_list_mutex);
|
|
of_node_put(ti_sci_np);
|
|
|
|
if (!handle)
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
|
|
return handle;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ti_sci_get_by_phandle);
|
|
|
|
/**
|
|
* devm_ti_sci_get_by_phandle() - Managed get handle using phandle
|
|
* @dev: Device pointer requesting TISCI handle
|
|
* @property: property name containing phandle on TISCI node
|
|
*
|
|
* NOTE: This releases the handle once the device resources are
|
|
* no longer needed. MUST NOT BE released with ti_sci_put_handle.
|
|
* The function does not track individual clients of the framework
|
|
* and is expected to be maintained by caller of TI SCI protocol library.
|
|
*
|
|
* Return: 0 if all went fine, else corresponding error.
|
|
*/
|
|
const struct ti_sci_handle *devm_ti_sci_get_by_phandle(struct device *dev,
|
|
const char *property)
|
|
{
|
|
const struct ti_sci_handle *handle;
|
|
const struct ti_sci_handle **ptr;
|
|
|
|
ptr = devres_alloc(devm_ti_sci_release, sizeof(*ptr), GFP_KERNEL);
|
|
if (!ptr)
|
|
return ERR_PTR(-ENOMEM);
|
|
handle = ti_sci_get_by_phandle(dev_of_node(dev), property);
|
|
|
|
if (!IS_ERR(handle)) {
|
|
*ptr = handle;
|
|
devres_add(dev, ptr);
|
|
} else {
|
|
devres_free(ptr);
|
|
}
|
|
|
|
return handle;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devm_ti_sci_get_by_phandle);
|
|
|
|
/**
|
|
* ti_sci_get_free_resource() - Get a free resource from TISCI resource.
|
|
* @res: Pointer to the TISCI resource
|
|
*
|
|
* Return: resource num if all went ok else TI_SCI_RESOURCE_NULL.
|
|
*/
|
|
u16 ti_sci_get_free_resource(struct ti_sci_resource *res)
|
|
{
|
|
unsigned long flags;
|
|
u16 set, free_bit;
|
|
|
|
raw_spin_lock_irqsave(&res->lock, flags);
|
|
for (set = 0; set < res->sets; set++) {
|
|
free_bit = find_first_zero_bit(res->desc[set].res_map,
|
|
res->desc[set].num);
|
|
if (free_bit != res->desc[set].num) {
|
|
set_bit(free_bit, res->desc[set].res_map);
|
|
raw_spin_unlock_irqrestore(&res->lock, flags);
|
|
return res->desc[set].start + free_bit;
|
|
}
|
|
}
|
|
raw_spin_unlock_irqrestore(&res->lock, flags);
|
|
|
|
return TI_SCI_RESOURCE_NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ti_sci_get_free_resource);
|
|
|
|
/**
|
|
* ti_sci_release_resource() - Release a resource from TISCI resource.
|
|
* @res: Pointer to the TISCI resource
|
|
* @id: Resource id to be released.
|
|
*/
|
|
void ti_sci_release_resource(struct ti_sci_resource *res, u16 id)
|
|
{
|
|
unsigned long flags;
|
|
u16 set;
|
|
|
|
raw_spin_lock_irqsave(&res->lock, flags);
|
|
for (set = 0; set < res->sets; set++) {
|
|
if (res->desc[set].start <= id &&
|
|
(res->desc[set].num + res->desc[set].start) > id)
|
|
clear_bit(id - res->desc[set].start,
|
|
res->desc[set].res_map);
|
|
}
|
|
raw_spin_unlock_irqrestore(&res->lock, flags);
|
|
}
|
|
EXPORT_SYMBOL_GPL(ti_sci_release_resource);
|
|
|
|
/**
|
|
* ti_sci_get_num_resources() - Get the number of resources in TISCI resource
|
|
* @res: Pointer to the TISCI resource
|
|
*
|
|
* Return: Total number of available resources.
|
|
*/
|
|
u32 ti_sci_get_num_resources(struct ti_sci_resource *res)
|
|
{
|
|
u32 set, count = 0;
|
|
|
|
for (set = 0; set < res->sets; set++)
|
|
count += res->desc[set].num;
|
|
|
|
return count;
|
|
}
|
|
EXPORT_SYMBOL_GPL(ti_sci_get_num_resources);
|
|
|
|
/**
|
|
* devm_ti_sci_get_of_resource() - Get a TISCI resource assigned to a device
|
|
* @handle: TISCI handle
|
|
* @dev: Device pointer to which the resource is assigned
|
|
* @dev_id: TISCI device id to which the resource is assigned
|
|
* @of_prop: property name by which the resource are represented
|
|
*
|
|
* Return: Pointer to ti_sci_resource if all went well else appropriate
|
|
* error pointer.
|
|
*/
|
|
struct ti_sci_resource *
|
|
devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle,
|
|
struct device *dev, u32 dev_id, char *of_prop)
|
|
{
|
|
struct ti_sci_resource *res;
|
|
bool valid_set = false;
|
|
u32 resource_subtype;
|
|
int i, ret;
|
|
|
|
res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL);
|
|
if (!res)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
ret = of_property_count_elems_of_size(dev_of_node(dev), of_prop,
|
|
sizeof(u32));
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s resource type ids not available\n", of_prop);
|
|
return ERR_PTR(ret);
|
|
}
|
|
res->sets = ret;
|
|
|
|
res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc),
|
|
GFP_KERNEL);
|
|
if (!res->desc)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
for (i = 0; i < res->sets; i++) {
|
|
ret = of_property_read_u32_index(dev_of_node(dev), of_prop, i,
|
|
&resource_subtype);
|
|
if (ret)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
ret = handle->ops.rm_core_ops.get_range(handle, dev_id,
|
|
resource_subtype,
|
|
&res->desc[i].start,
|
|
&res->desc[i].num);
|
|
if (ret) {
|
|
dev_dbg(dev, "dev = %d subtype %d not allocated for this host\n",
|
|
dev_id, resource_subtype);
|
|
res->desc[i].start = 0;
|
|
res->desc[i].num = 0;
|
|
continue;
|
|
}
|
|
|
|
dev_dbg(dev, "dev = %d, subtype = %d, start = %d, num = %d\n",
|
|
dev_id, resource_subtype, res->desc[i].start,
|
|
res->desc[i].num);
|
|
|
|
valid_set = true;
|
|
res->desc[i].res_map =
|
|
devm_kzalloc(dev, BITS_TO_LONGS(res->desc[i].num) *
|
|
sizeof(*res->desc[i].res_map), GFP_KERNEL);
|
|
if (!res->desc[i].res_map)
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
raw_spin_lock_init(&res->lock);
|
|
|
|
if (valid_set)
|
|
return res;
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
static int tisci_reboot_handler(struct notifier_block *nb, unsigned long mode,
|
|
void *cmd)
|
|
{
|
|
struct ti_sci_info *info = reboot_to_ti_sci_info(nb);
|
|
const struct ti_sci_handle *handle = &info->handle;
|
|
|
|
ti_sci_cmd_core_reboot(handle);
|
|
|
|
/* call fail OR pass, we should not be here in the first place */
|
|
return NOTIFY_BAD;
|
|
}
|
|
|
|
/* Description for K2G */
|
|
static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = {
|
|
.default_host_id = 2,
|
|
/* Conservative duration */
|
|
.max_rx_timeout_ms = 1000,
|
|
/* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */
|
|
.max_msgs = 20,
|
|
.max_msg_size = 64,
|
|
.rm_type_map = NULL,
|
|
};
|
|
|
|
static struct ti_sci_rm_type_map ti_sci_am654_rm_type_map[] = {
|
|
{.dev_id = 56, .type = 0x00b}, /* GIC_IRQ */
|
|
{.dev_id = 179, .type = 0x000}, /* MAIN_NAV_UDMASS_IA0 */
|
|
{.dev_id = 187, .type = 0x009}, /* MAIN_NAV_RA */
|
|
{.dev_id = 188, .type = 0x006}, /* MAIN_NAV_UDMAP */
|
|
{.dev_id = 194, .type = 0x007}, /* MCU_NAV_UDMAP */
|
|
{.dev_id = 195, .type = 0x00a}, /* MCU_NAV_RA */
|
|
{.dev_id = 0, .type = 0x000}, /* end of table */
|
|
};
|
|
|
|
/* Description for AM654 */
|
|
static const struct ti_sci_desc ti_sci_pmmc_am654_desc = {
|
|
.default_host_id = 12,
|
|
/* Conservative duration */
|
|
.max_rx_timeout_ms = 10000,
|
|
/* Limited by MBOX_TX_QUEUE_LEN. K2G can handle upto 128 messages! */
|
|
.max_msgs = 20,
|
|
.max_msg_size = 60,
|
|
.rm_type_map = ti_sci_am654_rm_type_map,
|
|
};
|
|
|
|
static const struct of_device_id ti_sci_of_match[] = {
|
|
{.compatible = "ti,k2g-sci", .data = &ti_sci_pmmc_k2g_desc},
|
|
{.compatible = "ti,am654-sci", .data = &ti_sci_pmmc_am654_desc},
|
|
{ /* Sentinel */ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, ti_sci_of_match);
|
|
|
|
static int ti_sci_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
const struct of_device_id *of_id;
|
|
const struct ti_sci_desc *desc;
|
|
struct ti_sci_xfer *xfer;
|
|
struct ti_sci_info *info = NULL;
|
|
struct ti_sci_xfers_info *minfo;
|
|
struct mbox_client *cl;
|
|
int ret = -EINVAL;
|
|
int i;
|
|
int reboot = 0;
|
|
u32 h_id;
|
|
|
|
of_id = of_match_device(ti_sci_of_match, dev);
|
|
if (!of_id) {
|
|
dev_err(dev, "OF data missing\n");
|
|
return -EINVAL;
|
|
}
|
|
desc = of_id->data;
|
|
|
|
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
info->dev = dev;
|
|
info->desc = desc;
|
|
ret = of_property_read_u32(dev->of_node, "ti,host-id", &h_id);
|
|
/* if the property is not present in DT, use a default from desc */
|
|
if (ret < 0) {
|
|
info->host_id = info->desc->default_host_id;
|
|
} else {
|
|
if (!h_id) {
|
|
dev_warn(dev, "Host ID 0 is reserved for firmware\n");
|
|
info->host_id = info->desc->default_host_id;
|
|
} else {
|
|
info->host_id = h_id;
|
|
}
|
|
}
|
|
|
|
reboot = of_property_read_bool(dev->of_node,
|
|
"ti,system-reboot-controller");
|
|
INIT_LIST_HEAD(&info->node);
|
|
minfo = &info->minfo;
|
|
|
|
/*
|
|
* Pre-allocate messages
|
|
* NEVER allocate more than what we can indicate in hdr.seq
|
|
* if we have data description bug, force a fix..
|
|
*/
|
|
if (WARN_ON(desc->max_msgs >=
|
|
1 << 8 * sizeof(((struct ti_sci_msg_hdr *)0)->seq)))
|
|
return -EINVAL;
|
|
|
|
minfo->xfer_block = devm_kcalloc(dev,
|
|
desc->max_msgs,
|
|
sizeof(*minfo->xfer_block),
|
|
GFP_KERNEL);
|
|
if (!minfo->xfer_block)
|
|
return -ENOMEM;
|
|
|
|
minfo->xfer_alloc_table = devm_kcalloc(dev,
|
|
BITS_TO_LONGS(desc->max_msgs),
|
|
sizeof(unsigned long),
|
|
GFP_KERNEL);
|
|
if (!minfo->xfer_alloc_table)
|
|
return -ENOMEM;
|
|
bitmap_zero(minfo->xfer_alloc_table, desc->max_msgs);
|
|
|
|
/* Pre-initialize the buffer pointer to pre-allocated buffers */
|
|
for (i = 0, xfer = minfo->xfer_block; i < desc->max_msgs; i++, xfer++) {
|
|
xfer->xfer_buf = devm_kcalloc(dev, 1, desc->max_msg_size,
|
|
GFP_KERNEL);
|
|
if (!xfer->xfer_buf)
|
|
return -ENOMEM;
|
|
|
|
xfer->tx_message.buf = xfer->xfer_buf;
|
|
init_completion(&xfer->done);
|
|
}
|
|
|
|
ret = ti_sci_debugfs_create(pdev, info);
|
|
if (ret)
|
|
dev_warn(dev, "Failed to create debug file\n");
|
|
|
|
platform_set_drvdata(pdev, info);
|
|
|
|
cl = &info->cl;
|
|
cl->dev = dev;
|
|
cl->tx_block = false;
|
|
cl->rx_callback = ti_sci_rx_callback;
|
|
cl->knows_txdone = true;
|
|
|
|
spin_lock_init(&minfo->xfer_lock);
|
|
sema_init(&minfo->sem_xfer_count, desc->max_msgs);
|
|
|
|
info->chan_rx = mbox_request_channel_byname(cl, "rx");
|
|
if (IS_ERR(info->chan_rx)) {
|
|
ret = PTR_ERR(info->chan_rx);
|
|
goto out;
|
|
}
|
|
|
|
info->chan_tx = mbox_request_channel_byname(cl, "tx");
|
|
if (IS_ERR(info->chan_tx)) {
|
|
ret = PTR_ERR(info->chan_tx);
|
|
goto out;
|
|
}
|
|
ret = ti_sci_cmd_get_revision(info);
|
|
if (ret) {
|
|
dev_err(dev, "Unable to communicate with TISCI(%d)\n", ret);
|
|
goto out;
|
|
}
|
|
|
|
ti_sci_setup_ops(info);
|
|
|
|
if (reboot) {
|
|
info->nb.notifier_call = tisci_reboot_handler;
|
|
info->nb.priority = 128;
|
|
|
|
ret = register_restart_handler(&info->nb);
|
|
if (ret) {
|
|
dev_err(dev, "reboot registration fail(%d)\n", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
dev_info(dev, "ABI: %d.%d (firmware rev 0x%04x '%s')\n",
|
|
info->handle.version.abi_major, info->handle.version.abi_minor,
|
|
info->handle.version.firmware_revision,
|
|
info->handle.version.firmware_description);
|
|
|
|
mutex_lock(&ti_sci_list_mutex);
|
|
list_add_tail(&info->node, &ti_sci_list);
|
|
mutex_unlock(&ti_sci_list_mutex);
|
|
|
|
return of_platform_populate(dev->of_node, NULL, NULL, dev);
|
|
out:
|
|
if (!IS_ERR(info->chan_tx))
|
|
mbox_free_channel(info->chan_tx);
|
|
if (!IS_ERR(info->chan_rx))
|
|
mbox_free_channel(info->chan_rx);
|
|
debugfs_remove(info->d);
|
|
return ret;
|
|
}
|
|
|
|
static int ti_sci_remove(struct platform_device *pdev)
|
|
{
|
|
struct ti_sci_info *info;
|
|
struct device *dev = &pdev->dev;
|
|
int ret = 0;
|
|
|
|
of_platform_depopulate(dev);
|
|
|
|
info = platform_get_drvdata(pdev);
|
|
|
|
if (info->nb.notifier_call)
|
|
unregister_restart_handler(&info->nb);
|
|
|
|
mutex_lock(&ti_sci_list_mutex);
|
|
if (info->users)
|
|
ret = -EBUSY;
|
|
else
|
|
list_del(&info->node);
|
|
mutex_unlock(&ti_sci_list_mutex);
|
|
|
|
if (!ret) {
|
|
ti_sci_debugfs_destroy(pdev, info);
|
|
|
|
/* Safe to free channels since no more users */
|
|
mbox_free_channel(info->chan_tx);
|
|
mbox_free_channel(info->chan_rx);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct platform_driver ti_sci_driver = {
|
|
.probe = ti_sci_probe,
|
|
.remove = ti_sci_remove,
|
|
.driver = {
|
|
.name = "ti-sci",
|
|
.of_match_table = of_match_ptr(ti_sci_of_match),
|
|
},
|
|
};
|
|
module_platform_driver(ti_sci_driver);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("TI System Control Interface(SCI) driver");
|
|
MODULE_AUTHOR("Nishanth Menon");
|
|
MODULE_ALIAS("platform:ti-sci");
|