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3482 lines
98 KiB
3482 lines
98 KiB
// 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 - https://www.ti.com/ |
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* Nishanth Menon |
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*/ |
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|
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#define pr_fmt(fmt) "%s: " fmt, __func__ |
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|
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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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|
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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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/** |
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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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/** |
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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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/** |
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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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*/ |
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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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}; |
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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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}; |
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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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|
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#ifdef CONFIG_DEBUG_FS |
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|
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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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|
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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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|
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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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/** |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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/** |
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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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/* |
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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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|
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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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|
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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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/** |
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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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|
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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 |
|
* 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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|
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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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|
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reinit_completion(&xfer->done); |
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|
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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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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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/* |
|
* Keep the locked section as small as possible |
|
* NOTE: we might escape with smp_mb and no lock here.. |
|
* but just be conservative and symmetric. |
|
*/ |
|
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 */ |
|
up(&minfo->sem_xfer_count); |
|
} |
|
|
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/** |
|
* ti_sci_do_xfer() - Do one transfer |
|
* @info: Pointer to SCI entity information |
|
* @xfer: Transfer to initiate and wait for response |
|
* |
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* Return: -ETIMEDOUT in case of no response, if transmit error, |
|
* return corresponding error, else if all goes well, |
|
* return 0. |
|
*/ |
|
static inline int ti_sci_do_xfer(struct ti_sci_info *info, |
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struct ti_sci_xfer *xfer) |
|
{ |
|
int ret; |
|
int timeout; |
|
struct device *dev = info->dev; |
|
|
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ret = mbox_send_message(info->chan_tx, &xfer->tx_message); |
|
if (ret < 0) |
|
return ret; |
|
|
|
ret = 0; |
|
|
|
/* And we wait for the response. */ |
|
timeout = msecs_to_jiffies(info->desc->max_rx_timeout_ms); |
|
if (!wait_for_completion_timeout(&xfer->done, timeout)) { |
|
dev_err(dev, "Mbox timedout in resp(caller: %pS)\n", |
|
(void *)_RET_IP_); |
|
ret = -ETIMEDOUT; |
|
} |
|
/* |
|
* NOTE: we might prefer not to need the mailbox ticker to manage the |
|
* transfer queueing since the protocol layer queues things by itself. |
|
* Unfortunately, we have to kick the mailbox framework after we have |
|
* received our message. |
|
*/ |
|
mbox_client_txdone(info->chan_tx, ret); |
|
|
|
return ret; |
|
} |
|
|
|
/** |
|
* ti_sci_cmd_get_revision() - command to get the revision of the SCI entity |
|
* @info: Pointer to SCI entity information |
|
* |
|
* Updates the SCI information in the internal data structure. |
|
* |
|
* Return: 0 if all went fine, else return appropriate error. |
|
*/ |
|
static int ti_sci_cmd_get_revision(struct ti_sci_info *info) |
|
{ |
|
struct device *dev = info->dev; |
|
struct ti_sci_handle *handle = &info->handle; |
|
struct ti_sci_version_info *ver = &handle->version; |
|
struct ti_sci_msg_resp_version *rev_info; |
|
struct ti_sci_xfer *xfer; |
|
int ret; |
|
|
|
xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_VERSION, |
|
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED, |
|
sizeof(struct ti_sci_msg_hdr), |
|
sizeof(*rev_info)); |
|
if (IS_ERR(xfer)) { |
|
ret = PTR_ERR(xfer); |
|
dev_err(dev, "Message alloc failed(%d)\n", ret); |
|
return ret; |
|
} |
|
|
|
rev_info = (struct ti_sci_msg_resp_version *)xfer->xfer_buf; |
|
|
|
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, |
|
MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE, |
|
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, |
|
MSG_FLAG_CLOCK_ALLOW_FREQ_CHANGE, |
|
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; |
|
} |
|
|
|
/** |
|
* 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 |
|
* @desc: Pointer to ti_sci_resource_desc to be updated with the |
|
* resource range start index and number of resources |
|
* |
|
* 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, |
|
struct ti_sci_resource_desc *desc) |
|
{ |
|
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; |
|
int ret = 0; |
|
|
|
if (IS_ERR(handle)) |
|
return PTR_ERR(handle); |
|
if (!handle || !desc) |
|
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; |
|
} |
|
|
|
req = (struct ti_sci_msg_req_get_resource_range *)xfer->xfer_buf; |
|
req->secondary_host = s_host; |
|
req->type = dev_id & 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_num && !resp->range_num_sec) { |
|
/* Neither of the two resource range is valid */ |
|
ret = -ENODEV; |
|
} else { |
|
desc->start = resp->range_start; |
|
desc->num = resp->range_num; |
|
desc->start_sec = resp->range_start_sec; |
|
desc->num_sec = resp->range_num_sec; |
|
}; |
|
|
|
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. |
|
* @desc: Pointer to ti_sci_resource_desc to be updated with the |
|
* resource range start index and number of resources |
|
* |
|
* 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, |
|
struct ti_sci_resource_desc *desc) |
|
{ |
|
return ti_sci_get_resource_range(handle, dev_id, subtype, |
|
TI_SCI_IRQ_SECONDARY_HOST_INVALID, |
|
desc); |
|
} |
|
|
|
/** |
|
* 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 |
|
* @desc: Pointer to ti_sci_resource_desc to be updated with the |
|
* resource range start index and number of resources |
|
* |
|
* 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, |
|
struct ti_sci_resource_desc *desc) |
|
{ |
|
return ti_sci_get_resource_range(handle, dev_id, subtype, s_host, desc); |
|
} |
|
|
|
/** |
|
* 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_rm_ring_cfg() - Configure a NAVSS ring |
|
* @handle: Pointer to TI SCI handle. |
|
* @params: Pointer to ti_sci_msg_rm_ring_cfg ring config structure |
|
* |
|
* Return: 0 if all went well, else returns appropriate error value. |
|
* |
|
* See @ti_sci_msg_rm_ring_cfg and @ti_sci_msg_rm_ring_cfg_req for |
|
* more info. |
|
*/ |
|
static int ti_sci_cmd_rm_ring_cfg(const struct ti_sci_handle *handle, |
|
const struct ti_sci_msg_rm_ring_cfg *params) |
|
{ |
|
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 = params->valid_params; |
|
req->nav_id = params->nav_id; |
|
req->index = params->index; |
|
req->addr_lo = params->addr_lo; |
|
req->addr_hi = params->addr_hi; |
|
req->count = params->count; |
|
req->mode = params->mode; |
|
req->size = params->size; |
|
req->order_id = params->order_id; |
|
req->virtid = params->virtid; |
|
req->asel = params->asel; |
|
|
|
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 : -EINVAL; |
|
|
|
fail: |
|
ti_sci_put_one_xfer(&info->minfo, xfer); |
|
dev_dbg(dev, "RM_RA:config ring %u ret:%d\n", params->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; |
|
req->tx_tdtype = params->tx_tdtype; |
|
req->extended_ch_type = params->extended_ch_type; |
|
|
|
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->set_cfg = ti_sci_cmd_rm_ring_cfg; |
|
|
|
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++) { |
|
struct ti_sci_resource_desc *desc = &res->desc[set]; |
|
int res_count = desc->num + desc->num_sec; |
|
|
|
free_bit = find_first_zero_bit(desc->res_map, res_count); |
|
if (free_bit != res_count) { |
|
set_bit(free_bit, desc->res_map); |
|
raw_spin_unlock_irqrestore(&res->lock, flags); |
|
|
|
if (desc->num && free_bit < desc->num) |
|
return desc->start + free_bit; |
|
else |
|
return desc->start_sec + 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++) { |
|
struct ti_sci_resource_desc *desc = &res->desc[set]; |
|
|
|
if (desc->num && desc->start <= id && |
|
(desc->start + desc->num) > id) |
|
clear_bit(id - desc->start, desc->res_map); |
|
else if (desc->num_sec && desc->start_sec <= id && |
|
(desc->start_sec + desc->num_sec) > id) |
|
clear_bit(id - desc->start_sec, desc->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 + res->desc[set].num_sec; |
|
|
|
return count; |
|
} |
|
EXPORT_SYMBOL_GPL(ti_sci_get_num_resources); |
|
|
|
/** |
|
* devm_ti_sci_get_resource_sets() - Get a TISCI resources 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 |
|
* @sub_types: Array of sub_types assigned corresponding to device |
|
* @sets: Number of sub_types |
|
* |
|
* Return: Pointer to ti_sci_resource if all went well else appropriate |
|
* error pointer. |
|
*/ |
|
static struct ti_sci_resource * |
|
devm_ti_sci_get_resource_sets(const struct ti_sci_handle *handle, |
|
struct device *dev, u32 dev_id, u32 *sub_types, |
|
u32 sets) |
|
{ |
|
struct ti_sci_resource *res; |
|
bool valid_set = false; |
|
int i, ret, res_count; |
|
|
|
res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL); |
|
if (!res) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
res->sets = sets; |
|
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 = handle->ops.rm_core_ops.get_range(handle, dev_id, |
|
sub_types[i], |
|
&res->desc[i]); |
|
if (ret) { |
|
dev_dbg(dev, "dev = %d subtype %d not allocated for this host\n", |
|
dev_id, sub_types[i]); |
|
memset(&res->desc[i], 0, sizeof(res->desc[i])); |
|
continue; |
|
} |
|
|
|
dev_dbg(dev, "dev/sub_type: %d/%d, start/num: %d/%d | %d/%d\n", |
|
dev_id, sub_types[i], res->desc[i].start, |
|
res->desc[i].num, res->desc[i].start_sec, |
|
res->desc[i].num_sec); |
|
|
|
valid_set = true; |
|
res_count = res->desc[i].num + res->desc[i].num_sec; |
|
res->desc[i].res_map = |
|
devm_kzalloc(dev, BITS_TO_LONGS(res_count) * |
|
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); |
|
} |
|
|
|
/** |
|
* 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; |
|
u32 *sub_types; |
|
int sets; |
|
|
|
sets = of_property_count_elems_of_size(dev_of_node(dev), of_prop, |
|
sizeof(u32)); |
|
if (sets < 0) { |
|
dev_err(dev, "%s resource type ids not available\n", of_prop); |
|
return ERR_PTR(sets); |
|
} |
|
|
|
sub_types = kcalloc(sets, sizeof(*sub_types), GFP_KERNEL); |
|
if (!sub_types) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
of_property_read_u32_array(dev_of_node(dev), of_prop, sub_types, sets); |
|
res = devm_ti_sci_get_resource_sets(handle, dev, dev_id, sub_types, |
|
sets); |
|
|
|
kfree(sub_types); |
|
return res; |
|
} |
|
EXPORT_SYMBOL_GPL(devm_ti_sci_get_of_resource); |
|
|
|
/** |
|
* devm_ti_sci_get_resource() - Get a resource range assigned to the device |
|
* @handle: TISCI handle |
|
* @dev: Device pointer to which the resource is assigned |
|
* @dev_id: TISCI device id to which the resource is assigned |
|
* @suub_type: TISCI resource subytpe representing the resource. |
|
* |
|
* Return: Pointer to ti_sci_resource if all went well else appropriate |
|
* error pointer. |
|
*/ |
|
struct ti_sci_resource * |
|
devm_ti_sci_get_resource(const struct ti_sci_handle *handle, struct device *dev, |
|
u32 dev_id, u32 sub_type) |
|
{ |
|
return devm_ti_sci_get_resource_sets(handle, dev, dev_id, &sub_type, 1); |
|
} |
|
EXPORT_SYMBOL_GPL(devm_ti_sci_get_resource); |
|
|
|
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, |
|
}; |
|
|
|
/* 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, |
|
}; |
|
|
|
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");
|
|
|