Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-12-21 02:33:07 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/drivers/firmware/ti_sci.c
Simon Glass 41575d8e4c dm: treewide: Rename auto_alloc_size members to be shorter 
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.

Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 08:00:25 -07:00

3170 lines
88 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0+
/*
* Texas Instruments System Control Interface Protocol Driver
* Based on drivers/firmware/ti_sci.c from Linux.
*
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
* Lokesh Vutla <lokeshvutla@ti.com>
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <log.h>
#include <mailbox.h>
#include <malloc.h>
#include <dm/device.h>
#include <dm/device_compat.h>
#include <dm/devres.h>
#include <linux/bitops.h>
#include <linux/compat.h>
#include <linux/err.h>
#include <linux/soc/ti/k3-sec-proxy.h>
#include <linux/soc/ti/ti_sci_protocol.h>
#include "ti_sci.h"
/* List of all TI SCI devices active in system */
static LIST_HEAD(ti_sci_list);
/**
* struct ti_sci_xfer - Structure representing a message flow
* @tx_message: Transmit message
* @rx_len: Receive message length
*/
struct ti_sci_xfer {
struct k3_sec_proxy_msg tx_message;
u8 rx_len;
};
/**
* struct ti_sci_rm_type_map - Structure representing TISCI Resource
* management representation of dev_ids.
* @dev_id: TISCI device ID
* @type: Corresponding id as identified by TISCI RM.
*
* Note: This is used only as a work around for using RM range apis
* for AM654 SoC. For future SoCs dev_id will be used as type
* for RM range APIs. In order to maintain ABI backward compatibility
* type is not being changed for AM654 SoC.
*/
struct ti_sci_rm_type_map {
u32 dev_id;
u16 type;
};
/**
* struct ti_sci_desc - Description of SoC integration
* @default_host_id: Host identifier representing the compute entity
* @max_rx_timeout_ms: Timeout for communication with SoC (in Milliseconds)
* @max_msgs: Maximum number of messages that can be pending
* simultaneously in the system
* @max_msg_size: Maximum size of data per message that can be handled.
*/
struct ti_sci_desc {
u8 default_host_id;
int max_rx_timeout_ms;
int max_msgs;
int max_msg_size;
};
/**
* struct ti_sci_info - Structure representing a TI SCI instance
* @dev: Device pointer
* @desc: SoC description for this instance
* @handle: Instance of TI SCI handle to send to clients.
* @chan_tx: Transmit mailbox channel
* @chan_rx: Receive mailbox channel
* @xfer: xfer info
* @list: list head
* @is_secure: Determines if the communication is through secure threads.
* @host_id: Host identifier representing the compute entity
* @seq: Seq id used for verification for tx and rx message.
*/
struct ti_sci_info {
struct udevice *dev;
const struct ti_sci_desc *desc;
struct ti_sci_handle handle;
struct mbox_chan chan_tx;
struct mbox_chan chan_rx;
struct mbox_chan chan_notify;
struct ti_sci_xfer xfer;
struct list_head list;
struct list_head dev_list;
bool is_secure;
u8 host_id;
u8 seq;
};
struct ti_sci_exclusive_dev {
u32 id;
u32 count;
struct list_head list;
};
#define handle_to_ti_sci_info(h) container_of(h, struct ti_sci_info, handle)
/**
* ti_sci_setup_one_xfer() - Setup one message type
* @info: Pointer to SCI entity information
* @msg_type: Message type
* @msg_flags: Flag to set for the message
* @buf: Buffer to be send to mailbox channel
* @tx_message_size: transmit message size
* @rx_message_size: receive message size. may be set to zero for send-only
* transactions.
*
* Helper function which is used by various command functions that are
* exposed to clients of this driver for allocating a message traffic event.
*
* Return: Corresponding ti_sci_xfer pointer if all went fine,
* else appropriate error pointer.
*/
static struct ti_sci_xfer *ti_sci_setup_one_xfer(struct ti_sci_info *info,
u16 msg_type, u32 msg_flags,
u32 *buf,
size_t tx_message_size,
size_t rx_message_size)
{
struct ti_sci_xfer *xfer = &info->xfer;
struct ti_sci_msg_hdr *hdr;
/* Ensure we have sane transfer sizes */
if (rx_message_size > info->desc->max_msg_size ||
tx_message_size > info->desc->max_msg_size ||
(rx_message_size > 0 && rx_message_size < sizeof(*hdr)) ||
tx_message_size < sizeof(*hdr))
return ERR_PTR(-ERANGE);
info->seq = ~info->seq;
xfer->tx_message.buf = buf;
xfer->tx_message.len = tx_message_size;
xfer->rx_len = (u8)rx_message_size;
hdr = (struct ti_sci_msg_hdr *)buf;
hdr->seq = info->seq;
hdr->type = msg_type;
hdr->host = info->host_id;
hdr->flags = msg_flags;
return xfer;
}
/**
* ti_sci_get_response() - Receive response from mailbox channel
* @info: Pointer to SCI entity information
* @xfer: Transfer to initiate and wait for response
* @chan: Channel to receive the response
*
* 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_get_response(struct ti_sci_info *info,
struct ti_sci_xfer *xfer,
struct mbox_chan *chan)
{
struct k3_sec_proxy_msg *msg = &xfer->tx_message;
struct ti_sci_secure_msg_hdr *secure_hdr;
struct ti_sci_msg_hdr *hdr;
int ret;
/* Receive the response */
ret = mbox_recv(chan, msg, info->desc->max_rx_timeout_ms * 1000);
if (ret) {
dev_err(info->dev, "%s: Message receive failed. ret = %d\n",
__func__, ret);
return ret;
}
/* ToDo: Verify checksum */
if (info->is_secure) {
secure_hdr = (struct ti_sci_secure_msg_hdr *)msg->buf;
msg->buf = (u32 *)((void *)msg->buf + sizeof(*secure_hdr));
}
/* msg is updated by mailbox driver */
hdr = (struct ti_sci_msg_hdr *)msg->buf;
/* Sanity check for message response */
if (hdr->seq != info->seq) {
dev_dbg(info->dev, "%s: Message for %d is not expected\n",
__func__, hdr->seq);
return ret;
}
if (msg->len > info->desc->max_msg_size) {
dev_err(info->dev, "%s: Unable to handle %zu xfer (max %d)\n",
__func__, msg->len, info->desc->max_msg_size);
return -EINVAL;
}
if (msg->len < xfer->rx_len) {
dev_err(info->dev, "%s: Recv xfer %zu < expected %d length\n",
__func__, msg->len, xfer->rx_len);
}
return ret;
}
/**
* ti_sci_do_xfer() - Do one transfer
* @info: Pointer to SCI entity information
* @xfer: Transfer to initiate and wait for response
*
* Return: 0 if all went fine, else return appropriate error.
*/
static inline int ti_sci_do_xfer(struct ti_sci_info *info,
struct ti_sci_xfer *xfer)
{
struct k3_sec_proxy_msg *msg = &xfer->tx_message;
u8 secure_buf[info->desc->max_msg_size];
struct ti_sci_secure_msg_hdr secure_hdr;
int ret;
if (info->is_secure) {
/* ToDo: get checksum of the entire message */
secure_hdr.checksum = 0;
secure_hdr.reserved = 0;
memcpy(&secure_buf[sizeof(secure_hdr)], xfer->tx_message.buf,
xfer->tx_message.len);
xfer->tx_message.buf = (u32 *)secure_buf;
xfer->tx_message.len += sizeof(secure_hdr);
if (xfer->rx_len)
xfer->rx_len += sizeof(secure_hdr);
}
/* Send the message */
ret = mbox_send(&info->chan_tx, msg);
if (ret) {
dev_err(info->dev, "%s: Message sending failed. ret = %d\n",
__func__, ret);
return ret;
}
/* Get response if requested */
if (xfer->rx_len)
ret = ti_sci_get_response(info, xfer, &info->chan_rx);
return ret;
}
/**
* ti_sci_cmd_get_revision() - command to get the revision of the SCI entity
* @handle: pointer to TI SCI handle
*
* 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_handle *handle)
{
struct ti_sci_msg_resp_version *rev_info;
struct ti_sci_version_info *ver;
struct ti_sci_msg_hdr hdr;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_VERSION,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&hdr, sizeof(struct ti_sci_msg_hdr),
sizeof(*rev_info));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox communication fail %d\n", ret);
return ret;
}
rev_info = (struct ti_sci_msg_resp_version *)xfer->tx_message.buf;
ver = &handle->version;
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));
return 0;
}
/**
* 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;
}
/**
* cmd_set_board_config_using_msg() - Common command to send board configuration
* message
* @handle: pointer to TI SCI handle
* @msg_type: One of the TISCI message types to set board configuration
* @addr: Address where the board config structure is located
* @size: Size of the board config structure
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int cmd_set_board_config_using_msg(const struct ti_sci_handle *handle,
u16 msg_type, u64 addr, u32 size)
{
struct ti_sci_msg_board_config req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, msg_type,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.boardcfgp_high = (addr >> 32) & 0xffffffff;
req.boardcfgp_low = addr & 0xffffffff;
req.boardcfg_size = size;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
return ret;
}
/**
* ti_sci_cmd_set_board_config() - Command to send board configuration message
* @handle: pointer to TI SCI handle
* @addr: Address where the board config structure is located
* @size: Size of the board config structure
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_set_board_config(const struct ti_sci_handle *handle,
u64 addr, u32 size)
{
return cmd_set_board_config_using_msg(handle,
TI_SCI_MSG_BOARD_CONFIG,
addr, size);
}
/**
* ti_sci_cmd_set_board_config_rm() - Command to send board resource
* management configuration
* @handle: pointer to TI SCI handle
* @addr: Address where the board RM config structure is located
* @size: Size of the RM config structure
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static
int ti_sci_cmd_set_board_config_rm(const struct ti_sci_handle *handle,
u64 addr, u32 size)
{
return cmd_set_board_config_using_msg(handle,
TI_SCI_MSG_BOARD_CONFIG_RM,
addr, size);
}
/**
* ti_sci_cmd_set_board_config_security() - Command to send board security
* configuration message
* @handle: pointer to TI SCI handle
* @addr: Address where the board security config structure is located
* @size: Size of the security config structure
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static
int ti_sci_cmd_set_board_config_security(const struct ti_sci_handle *handle,
u64 addr, u32 size)
{
return cmd_set_board_config_using_msg(handle,
TI_SCI_MSG_BOARD_CONFIG_SECURITY,
addr, size);
}
/**
* ti_sci_cmd_set_board_config_pm() - Command to send board power and clock
* configuration message
* @handle: pointer to TI SCI handle
* @addr: Address where the board PM config structure is located
* @size: Size of the PM config structure
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_set_board_config_pm(const struct ti_sci_handle *handle,
u64 addr, u32 size)
{
return cmd_set_board_config_using_msg(handle,
TI_SCI_MSG_BOARD_CONFIG_PM,
addr, size);
}
static struct ti_sci_exclusive_dev
*ti_sci_get_exclusive_dev(struct list_head *dev_list, u32 id)
{
struct ti_sci_exclusive_dev *dev;
list_for_each_entry(dev, dev_list, list)
if (dev->id == id)
return dev;
return NULL;
}
static void ti_sci_add_exclusive_dev(struct ti_sci_info *info, u32 id)
{
struct ti_sci_exclusive_dev *dev;
dev = ti_sci_get_exclusive_dev(&info->dev_list, id);
if (dev) {
dev->count++;
return;
}
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
dev->id = id;
dev->count = 1;
INIT_LIST_HEAD(&dev->list);
list_add_tail(&dev->list, &info->dev_list);
}
static void ti_sci_delete_exclusive_dev(struct ti_sci_info *info, u32 id)
{
struct ti_sci_exclusive_dev *dev;
dev = ti_sci_get_exclusive_dev(&info->dev_list, id);
if (!dev)
return;
if (dev->count > 0)
dev->count--;
}
/**
* 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_msg_req_set_device_state req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE,
flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.id = id;
req.state = state;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
if (state == MSG_DEVICE_SW_STATE_AUTO_OFF)
ti_sci_delete_exclusive_dev(info, id);
else if (flags & MSG_FLAG_DEVICE_EXCLUSIVE)
ti_sci_add_exclusive_dev(info, id);
return ret;
}
/**
* ti_sci_set_device_state_no_wait() - Set device state helper without
* requesting or waiting for a response.
* @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_no_wait(const struct ti_sci_handle *handle,
u32 id, u32 flags, u8 state)
{
struct ti_sci_msg_req_set_device_state req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_DEVICE_STATE,
flags | TI_SCI_FLAG_REQ_GENERIC_NORESPONSE,
(u32 *)&req, sizeof(req), 0);
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.id = id;
req.state = state;
ret = ti_sci_do_xfer(info, xfer);
if (ret)
dev_err(info->dev, "Mbox send fail %d\n", ret);
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_msg_resp_get_device_state *resp;
struct ti_sci_msg_req_get_device_state req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
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);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.id = id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_get_device_state *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
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;
return ret;
}
/**
* ti_sci_cmd_get_device() - command to request for 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.
*
* NOTE: The request is for exclusive access for the processor.
*
* 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);
}
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);
}
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);
}
static
int ti_sci_cmd_release_exclusive_devices(const struct ti_sci_handle *handle)
{
struct ti_sci_exclusive_dev *dev, *tmp;
struct ti_sci_info *info;
int i, cnt;
info = handle_to_ti_sci_info(handle);
list_for_each_entry_safe(dev, tmp, &info->dev_list, list) {
cnt = dev->count;
debug("%s: id = %d, cnt = %d\n", __func__, dev->id, cnt);
for (i = 0; i < cnt; i++)
ti_sci_cmd_put_device(handle, dev->id);
}
return 0;
}
/**
* 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_msg_req_set_device_resets req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_DEVICE_RESETS,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.id = id;
req.resets = reset_state;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
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, u8 clk_id,
u32 flags, u8 state)
{
struct ti_sci_msg_req_set_clock_state req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_STATE,
flags | TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.dev_id = dev_id;
req.clk_id = clk_id;
req.request_state = state;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
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, u8 clk_id,
u8 *programmed_state, u8 *current_state)
{
struct ti_sci_msg_resp_get_clock_state *resp;
struct ti_sci_msg_req_get_clock_state req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
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);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_STATE,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.dev_id = dev_id;
req.clk_id = clk_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_get_clock_state *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
if (programmed_state)
*programmed_state = resp->programmed_state;
if (current_state)
*current_state = resp->current_state;
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,
u8 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, u8 clk_id)
{
return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
MSG_CLOCK_SW_STATE_UNREQ);
}
/**
* ti_sci_cmd_put_clock() - Release a clock from our control back to TISCI
* @handle: pointer to TI SCI handle
* @dev_id: Device identifier this request is for
* @clk_id: Clock identifier for the device for this request.
* Each device has it's own set of clock inputs. This indexes
* which clock input to modify.
*
* NOTE: This clock must have been requested by get_clock previously.
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_put_clock(const struct ti_sci_handle *handle,
u32 dev_id, u8 clk_id)
{
return ti_sci_set_clock_state(handle, dev_id, clk_id, 0,
MSG_CLOCK_SW_STATE_AUTO);
}
/**
* ti_sci_cmd_clk_is_auto() - Is the clock being auto managed
* @handle: pointer to TI SCI handle
* @dev_id: Device identifier this request is for
* @clk_id: Clock identifier for the device for this request.
* Each device has it's own set of clock inputs. This indexes
* which clock input to modify.
* @req_state: state indicating if the clock is auto managed
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_clk_is_auto(const struct ti_sci_handle *handle,
u32 dev_id, u8 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,
u8 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,
u8 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, u8 clk_id, u8 parent_id)
{
struct ti_sci_msg_req_set_clock_parent req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_PARENT,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.dev_id = dev_id;
req.clk_id = clk_id;
req.parent_id = parent_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
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, u8 clk_id, u8 *parent_id)
{
struct ti_sci_msg_resp_get_clock_parent *resp;
struct ti_sci_msg_req_get_clock_parent req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle || !parent_id)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_PARENT,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.dev_id = dev_id;
req.clk_id = clk_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_get_clock_parent *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
else
*parent_id = resp->parent_id;
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, u8 clk_id,
u8 *num_parents)
{
struct ti_sci_msg_resp_get_clock_num_parents *resp;
struct ti_sci_msg_req_get_clock_num_parents req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle || !num_parents)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_NUM_CLOCK_PARENTS,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.dev_id = dev_id;
req.clk_id = clk_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_get_clock_num_parents *)
xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
else
*num_parents = resp->num_parents;
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, u8 clk_id, u64 min_freq,
u64 target_freq, u64 max_freq,
u64 *match_freq)
{
struct ti_sci_msg_resp_query_clock_freq *resp;
struct ti_sci_msg_req_query_clock_freq req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle || !match_freq)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_QUERY_CLOCK_FREQ,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.dev_id = dev_id;
req.clk_id = 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(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_query_clock_freq *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
else
*match_freq = resp->freq_hz;
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, u8 clk_id, u64 min_freq,
u64 target_freq, u64 max_freq)
{
struct ti_sci_msg_req_set_clock_freq req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SET_CLOCK_FREQ,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.dev_id = dev_id;
req.clk_id = 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(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
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, u8 clk_id, u64 *freq)
{
struct ti_sci_msg_resp_get_clock_freq *resp;
struct ti_sci_msg_req_get_clock_freq req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle || !freq)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_CLOCK_FREQ,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.dev_id = dev_id;
req.clk_id = clk_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_get_clock_freq *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
else
*freq = resp->freq_hz;
return ret;
}
/**
* ti_sci_cmd_core_reboot() - Command to request system reset
* @handle: pointer to TI SCI handle
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_core_reboot(const struct ti_sci_handle *handle)
{
struct ti_sci_msg_req_reboot req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_SYS_RESET,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
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
* @range_start: Start index of the resource range
* @range_num: Number of resources in the range
*
* Return: 0 if all went fine, else return appropriate error.
*/
static int ti_sci_get_resource_range(const struct ti_sci_handle *handle,
u32 dev_id, u8 subtype, u8 s_host,
u16 *range_start, u16 *range_num)
{
struct ti_sci_msg_resp_get_resource_range *resp;
struct ti_sci_msg_req_get_resource_range req;
struct ti_sci_xfer *xfer;
struct ti_sci_info *info;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_RESOURCE_RANGE,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
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(info->dev, "Mbox send fail %d\n", ret);
goto fail;
}
resp = (struct ti_sci_msg_resp_get_resource_range *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp)) {
ret = -ENODEV;
} else if (!resp->range_start && !resp->range_num) {
ret = -ENODEV;
} else {
*range_start = resp->range_start;
*range_num = resp->range_num;
};
fail:
return ret;
}
/**
* ti_sci_cmd_get_resource_range - Get a range of resources assigned to host
* that is same as ti sci interface host.
* @handle: Pointer to TISCI handle.
* @dev_id: TISCI device ID.
* @subtype: Resource assignment subtype that is being requested
* from the given device.
* @range_start: Start index of the resource range
* @range_num: Number of resources in the range
*
* Return: 0 if all went fine, else return appropriate error.
*/
static int ti_sci_cmd_get_resource_range(const struct ti_sci_handle *handle,
u32 dev_id, u8 subtype,
u16 *range_start, u16 *range_num)
{
return ti_sci_get_resource_range(handle, dev_id, subtype,
TI_SCI_IRQ_SECONDARY_HOST_INVALID,
range_start, range_num);
}
/**
* ti_sci_cmd_get_resource_range_from_shost - Get a range of resources
* assigned to a specified host.
* @handle: Pointer to TISCI handle.
* @dev_id: TISCI device ID.
* @subtype: Resource assignment subtype that is being requested
* from the given device.
* @s_host: Host processor ID to which the resources are allocated
* @range_start: Start index of the resource range
* @range_num: Number of resources in the range
*
* Return: 0 if all went fine, else return appropriate error.
*/
static
int ti_sci_cmd_get_resource_range_from_shost(const struct ti_sci_handle *handle,
u32 dev_id, u8 subtype, u8 s_host,
u16 *range_start, u16 *range_num)
{
return ti_sci_get_resource_range(handle, dev_id, subtype, s_host,
range_start, range_num);
}
/**
* ti_sci_cmd_query_msmc() - Command to query currently available msmc memory
* @handle: pointer to TI SCI handle
* @msms_start: MSMC start as returned by tisci
* @msmc_end: MSMC end as returned by tisci
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_query_msmc(const struct ti_sci_handle *handle,
u64 *msmc_start, u64 *msmc_end)
{
struct ti_sci_msg_resp_query_msmc *resp;
struct ti_sci_msg_hdr req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_QUERY_MSMC,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_query_msmc *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
*msmc_start = ((u64)resp->msmc_start_high << TISCI_ADDR_HIGH_SHIFT) |
resp->msmc_start_low;
*msmc_end = ((u64)resp->msmc_end_high << TISCI_ADDR_HIGH_SHIFT) |
resp->msmc_end_low;
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;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_REQUEST,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.processor_id = proc_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
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;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_RELEASE,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.processor_id = proc_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
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;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_HANDOVER,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.processor_id = proc_id;
req.host_id = host_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
return ret;
}
/**
* ti_sci_cmd_set_proc_boot_cfg() - 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_set_proc_boot_cfg(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_proc_boot_config req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_SET_PROC_BOOT_CONFIG,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.processor_id = proc_id;
req.bootvector_low = bootvector & TISCI_ADDR_LOW_MASK;
req.bootvector_high = (bootvector & TISCI_ADDR_HIGH_MASK) >>
TISCI_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(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
return ret;
}
/**
* ti_sci_cmd_set_proc_boot_ctrl() - 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_set_proc_boot_ctrl(const struct ti_sci_handle *handle,
u8 proc_id, u32 control_flags_set,
u32 control_flags_clear)
{
struct ti_sci_msg_req_set_proc_boot_ctrl req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_SET_PROC_BOOT_CTRL,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
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(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
ret = -ENODEV;
return ret;
}
/**
* ti_sci_cmd_proc_auth_boot_image() - Command to authenticate and load the
* image and then set the processor configuration flags.
* @handle: Pointer to TI SCI handle
* @image_addr: Memory address at which payload image and certificate is
* located in memory, this is updated if the image data is
* moved during authentication.
* @image_size: This is updated with the final size of the image after
* authentication.
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_proc_auth_boot_image(const struct ti_sci_handle *handle,
u64 *image_addr, u32 *image_size)
{
struct ti_sci_msg_req_proc_auth_boot_image req;
struct ti_sci_msg_resp_proc_auth_boot_image *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_PROC_AUTH_BOOT_IMIAGE,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.cert_addr_low = *image_addr & TISCI_ADDR_LOW_MASK;
req.cert_addr_high = (*image_addr & TISCI_ADDR_HIGH_MASK) >>
TISCI_ADDR_HIGH_SHIFT;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_proc_auth_boot_image *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
*image_addr = (resp->image_addr_low & TISCI_ADDR_LOW_MASK) |
(((u64)resp->image_addr_high <<
TISCI_ADDR_HIGH_SHIFT) & TISCI_ADDR_HIGH_MASK);
*image_size = resp->image_size;
return ret;
}
/**
* ti_sci_cmd_get_proc_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_get_proc_boot_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_proc_boot_status *resp;
struct ti_sci_msg_req_get_proc_boot_status req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_GET_PROC_BOOT_STATUS,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.processor_id = proc_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_resp_get_proc_boot_status *)
xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
*bv = (resp->bootvector_low & TISCI_ADDR_LOW_MASK) |
(((u64)resp->bootvector_high <<
TISCI_ADDR_HIGH_SHIFT) & TISCI_ADDR_HIGH_MASK);
*cfg_flags = resp->config_flags;
*ctrl_flags = resp->control_flags;
*sts_flags = resp->status_flags;
return ret;
}
/**
* ti_sci_proc_wait_boot_status_no_wait() - Helper function to wait for a
* processor boot status without requesting or
* waiting for a response.
* @proc_id: Processor ID this request is for
* @num_wait_iterations: Total number of iterations we will check before
* we will timeout and give up
* @num_match_iterations: How many iterations should we have continued
* status to account for status bits glitching.
* This is to make sure that match occurs for
* consecutive checks. This implies that the
* worst case should consider that the stable
* time should at the worst be num_wait_iterations
* num_match_iterations to prevent timeout.
* @delay_per_iteration_us: Specifies how long to wait (in micro seconds)
* between each status checks. This is the minimum
* duration, and overhead of register reads and
* checks are on top of this and can vary based on
* varied conditions.
* @delay_before_iterations_us: Specifies how long to wait (in micro seconds)
* before the very first check in the first
* iteration of status check loop. This is the
* minimum duration, and overhead of register
* reads and checks are.
* @status_flags_1_set_all_wait:If non-zero, Specifies that all bits of the
* status matching this field requested MUST be 1.
* @status_flags_1_set_any_wait:If non-zero, Specifies that at least one of the
* bits matching this field requested MUST be 1.
* @status_flags_1_clr_all_wait:If non-zero, Specifies that all bits of the
* status matching this field requested MUST be 0.
* @status_flags_1_clr_any_wait:If non-zero, Specifies that at least one of the
* bits matching this field requested MUST be 0.
*
* Return: 0 if all goes well, else appropriate error message
*/
static int
ti_sci_proc_wait_boot_status_no_wait(const struct ti_sci_handle *handle,
u8 proc_id,
u8 num_wait_iterations,
u8 num_match_iterations,
u8 delay_per_iteration_us,
u8 delay_before_iterations_us,
u32 status_flags_1_set_all_wait,
u32 status_flags_1_set_any_wait,
u32 status_flags_1_clr_all_wait,
u32 status_flags_1_clr_any_wait)
{
struct ti_sci_msg_req_wait_proc_boot_status req;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_WAIT_PROC_BOOT_STATUS,
TI_SCI_FLAG_REQ_GENERIC_NORESPONSE,
(u32 *)&req, sizeof(req), 0);
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.processor_id = proc_id;
req.num_wait_iterations = num_wait_iterations;
req.num_match_iterations = num_match_iterations;
req.delay_per_iteration_us = delay_per_iteration_us;
req.delay_before_iterations_us = delay_before_iterations_us;
req.status_flags_1_set_all_wait = status_flags_1_set_all_wait;
req.status_flags_1_set_any_wait = status_flags_1_set_any_wait;
req.status_flags_1_clr_all_wait = status_flags_1_clr_all_wait;
req.status_flags_1_clr_any_wait = status_flags_1_clr_any_wait;
ret = ti_sci_do_xfer(info, xfer);
if (ret)
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
/**
* ti_sci_cmd_proc_shutdown_no_wait() - Command to shutdown a core without
* requesting or waiting for a response. Note that this API call
* should be followed by placing the respective processor into
* either WFE or WFI mode.
* @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_shutdown_no_wait(const struct ti_sci_handle *handle,
u8 proc_id)
{
int ret;
struct ti_sci_info *info;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
/*
* Send the core boot status wait message waiting for either WFE or
* WFI without requesting or waiting for a TISCI response with the
* maximum wait time to give us the best chance to get to the WFE/WFI
* command that should follow the invocation of this API before the
* DMSC-internal processing of this command times out. Note that
* waiting for the R5 WFE/WFI flags will also work on an ARMV8 type
* core as the related flag bit positions are the same.
*/
ret = ti_sci_proc_wait_boot_status_no_wait(handle, proc_id,
U8_MAX, 100, U8_MAX, U8_MAX,
0, PROC_BOOT_STATUS_FLAG_R5_WFE | PROC_BOOT_STATUS_FLAG_R5_WFI,
0, 0);
if (ret) {
dev_err(info->dev, "Sending core %u wait message fail %d\n",
proc_id, ret);
return ret;
}
/*
* Release a processor managed by TISCI without requesting or waiting
* for a response.
*/
ret = ti_sci_set_device_state_no_wait(handle, proc_id, 0,
MSG_DEVICE_SW_STATE_AUTO_OFF);
if (ret)
dev_err(info->dev, "Sending core %u shutdown message fail %d\n",
proc_id, ret);
return ret;
}
/**
* ti_sci_cmd_ring_config() - configure RA ring
* @handle: pointer to TI SCI handle
* @valid_params: Bitfield defining validity of ring configuration parameters.
* @nav_id: Device ID of Navigator Subsystem from which the ring is allocated
* @index: Ring index.
* @addr_lo: The ring base address lo 32 bits
* @addr_hi: The ring base address hi 32 bits
* @count: Number of ring elements.
* @mode: The mode of the ring
* @size: The ring element size.
* @order_id: Specifies the ring's bus order ID.
*
* Return: 0 if all went well, else returns appropriate error value.
*
* See @ti_sci_msg_rm_ring_cfg_req for more info.
*/
static int ti_sci_cmd_ring_config(const struct ti_sci_handle *handle,
u32 valid_params, u16 nav_id, u16 index,
u32 addr_lo, u32 addr_hi, u32 count,
u8 mode, u8 size, u8 order_id)
{
struct ti_sci_msg_rm_ring_cfg_resp *resp;
struct ti_sci_msg_rm_ring_cfg_req req;
struct ti_sci_xfer *xfer;
struct ti_sci_info *info;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_RM_RING_CFG,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "RM_RA:Message config failed(%d)\n", ret);
return ret;
}
req.valid_params = valid_params;
req.nav_id = nav_id;
req.index = index;
req.addr_lo = addr_lo;
req.addr_hi = addr_hi;
req.count = count;
req.mode = mode;
req.size = size;
req.order_id = order_id;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "RM_RA:Mbox config send fail %d\n", ret);
goto fail;
}
resp = (struct ti_sci_msg_rm_ring_cfg_resp *)xfer->tx_message.buf;
ret = ti_sci_is_response_ack(resp) ? 0 : -ENODEV;
fail:
dev_dbg(info->dev, "RM_RA:config ring %u ret:%d\n", index, ret);
return ret;
}
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_hdr *resp;
struct ti_sci_msg_psil_pair req;
struct ti_sci_xfer *xfer;
struct ti_sci_info *info;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_RM_PSIL_PAIR,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "RM_PSIL:Message alloc failed(%d)\n", ret);
return ret;
}
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(info->dev, "RM_PSIL: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:
dev_dbg(info->dev, "RM_PSIL: nav: %u link pair %u->%u ret:%u\n",
nav_id, src_thread, dst_thread, ret);
return ret;
}
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_hdr *resp;
struct ti_sci_msg_psil_unpair req;
struct ti_sci_xfer *xfer;
struct ti_sci_info *info;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_RM_PSIL_UNPAIR,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "RM_PSIL:Message alloc failed(%d)\n", ret);
return ret;
}
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(info->dev, "RM_PSIL: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:
dev_dbg(info->dev, "RM_PSIL: link unpair %u->%u ret:%u\n",
src_thread, dst_thread, ret);
return ret;
}
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_resp *resp;
struct ti_sci_msg_rm_udmap_tx_ch_cfg_req req;
struct ti_sci_xfer *xfer;
struct ti_sci_info *info;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_RM_UDMAP_TX_CH_CFG,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message TX_CH_CFG alloc failed(%d)\n", ret);
return ret;
}
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;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send TX_CH_CFG fail %d\n", ret);
goto fail;
}
resp =
(struct ti_sci_msg_rm_udmap_tx_ch_cfg_resp *)xfer->tx_message.buf;
ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
fail:
dev_dbg(info->dev, "TX_CH_CFG: chn %u ret:%u\n", params->index, ret);
return ret;
}
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_resp *resp;
struct ti_sci_msg_rm_udmap_rx_ch_cfg_req req;
struct ti_sci_xfer *xfer;
struct ti_sci_info *info;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_RM_UDMAP_RX_CH_CFG,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message RX_CH_CFG alloc failed(%d)\n", ret);
return ret;
}
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;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send RX_CH_CFG fail %d\n", ret);
goto fail;
}
resp =
(struct ti_sci_msg_rm_udmap_rx_ch_cfg_resp *)xfer->tx_message.buf;
ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
fail:
dev_dbg(info->dev, "RX_CH_CFG: chn %u ret:%d\n", params->index, ret);
return ret;
}
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_resp *resp;
struct ti_sci_msg_rm_udmap_flow_cfg_req req;
struct ti_sci_xfer *xfer;
struct ti_sci_info *info;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_RM_UDMAP_FLOW_CFG,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "RX_FL_CFG: Message alloc failed(%d)\n",
ret);
return ret;
}
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(info->dev, "RX_FL_CFG: Mbox send fail %d\n", ret);
goto fail;
}
resp =
(struct ti_sci_msg_rm_udmap_flow_cfg_resp *)xfer->tx_message.buf;
ret = ti_sci_is_response_ack(resp) ? 0 : -EINVAL;
fail:
dev_dbg(info->dev, "RX_FL_CFG: %u ret:%d\n", params->flow_index, ret);
return ret;
}
/**
* ti_sci_cmd_set_fwl_region() - Request for configuring a firewall region
* @handle: pointer to TI SCI handle
* @region: region configuration parameters
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_set_fwl_region(const struct ti_sci_handle *handle,
const struct ti_sci_msg_fwl_region *region)
{
struct ti_sci_msg_fwl_set_firewall_region_req req;
struct ti_sci_msg_hdr *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_SET,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.fwl_id = region->fwl_id;
req.region = region->region;
req.n_permission_regs = region->n_permission_regs;
req.control = region->control;
req.permissions[0] = region->permissions[0];
req.permissions[1] = region->permissions[1];
req.permissions[2] = region->permissions[2];
req.start_address = region->start_address;
req.end_address = region->end_address;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
return 0;
}
/**
* ti_sci_cmd_get_fwl_region() - Request for getting a firewall region
* @handle: pointer to TI SCI handle
* @region: region configuration parameters
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_get_fwl_region(const struct ti_sci_handle *handle,
struct ti_sci_msg_fwl_region *region)
{
struct ti_sci_msg_fwl_get_firewall_region_req req;
struct ti_sci_msg_fwl_get_firewall_region_resp *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_GET,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.fwl_id = region->fwl_id;
req.region = region->region;
req.n_permission_regs = region->n_permission_regs;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_fwl_get_firewall_region_resp *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
region->fwl_id = resp->fwl_id;
region->region = resp->region;
region->n_permission_regs = resp->n_permission_regs;
region->control = resp->control;
region->permissions[0] = resp->permissions[0];
region->permissions[1] = resp->permissions[1];
region->permissions[2] = resp->permissions[2];
region->start_address = resp->start_address;
region->end_address = resp->end_address;
return 0;
}
/**
* ti_sci_cmd_change_fwl_owner() - Request for changing a firewall owner
* @handle: pointer to TI SCI handle
* @region: region configuration parameters
*
* Return: 0 if all went well, else returns appropriate error value.
*/
static int ti_sci_cmd_change_fwl_owner(const struct ti_sci_handle *handle,
struct ti_sci_msg_fwl_owner *owner)
{
struct ti_sci_msg_fwl_change_owner_info_req req;
struct ti_sci_msg_fwl_change_owner_info_resp *resp;
struct ti_sci_info *info;
struct ti_sci_xfer *xfer;
int ret = 0;
if (IS_ERR(handle))
return PTR_ERR(handle);
if (!handle)
return -EINVAL;
info = handle_to_ti_sci_info(handle);
xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_CHANGE_OWNER,
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
(u32 *)&req, sizeof(req), sizeof(*resp));
if (IS_ERR(xfer)) {
ret = PTR_ERR(xfer);
dev_err(info->dev, "Message alloc failed(%d)\n", ret);
return ret;
}
req.fwl_id = owner->fwl_id;
req.region = owner->region;
req.owner_index = owner->owner_index;
ret = ti_sci_do_xfer(info, xfer);
if (ret) {
dev_err(info->dev, "Mbox send fail %d\n", ret);
return ret;
}
resp = (struct ti_sci_msg_fwl_change_owner_info_resp *)xfer->tx_message.buf;
if (!ti_sci_is_response_ack(resp))
return -ENODEV;
owner->fwl_id = resp->fwl_id;
owner->region = resp->region;
owner->owner_index = resp->owner_index;
owner->owner_privid = resp->owner_privid;
owner->owner_permission_bits = resp->owner_permission_bits;
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_board_ops *bops = &ops->board_ops;
struct ti_sci_dev_ops *dops = &ops->dev_ops;
struct ti_sci_clk_ops *cops = &ops->clk_ops;
struct ti_sci_core_ops *core_ops = &ops->core_ops;
struct ti_sci_rm_core_ops *rm_core_ops = &ops->rm_core_ops;
struct ti_sci_proc_ops *pops = &ops->proc_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_fwl_ops *fwl_ops = &ops->fwl_ops;
bops->board_config = ti_sci_cmd_set_board_config;
bops->board_config_rm = ti_sci_cmd_set_board_config_rm;
bops->board_config_security = ti_sci_cmd_set_board_config_security;
bops->board_config_pm = ti_sci_cmd_set_board_config_pm;
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;
dops->release_exclusive_devices = ti_sci_cmd_release_exclusive_devices;
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;
core_ops->reboot_device = ti_sci_cmd_core_reboot;
core_ops->query_msmc = ti_sci_cmd_query_msmc;
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;
pops->proc_request = ti_sci_cmd_proc_request;
pops->proc_release = ti_sci_cmd_proc_release;
pops->proc_handover = ti_sci_cmd_proc_handover;
pops->set_proc_boot_cfg = ti_sci_cmd_set_proc_boot_cfg;
pops->set_proc_boot_ctrl = ti_sci_cmd_set_proc_boot_ctrl;
pops->proc_auth_boot_image = ti_sci_cmd_proc_auth_boot_image;
pops->get_proc_boot_status = ti_sci_cmd_get_proc_boot_status;
pops->proc_shutdown_no_wait = ti_sci_cmd_proc_shutdown_no_wait;
rops->config = ti_sci_cmd_ring_config;
psilops->pair = ti_sci_cmd_rm_psil_pair;
psilops->unpair = ti_sci_cmd_rm_psil_unpair;
udmap_ops->tx_ch_cfg = ti_sci_cmd_rm_udmap_tx_ch_cfg;
udmap_ops->rx_ch_cfg = ti_sci_cmd_rm_udmap_rx_ch_cfg;
udmap_ops->rx_flow_cfg = ti_sci_cmd_rm_udmap_rx_flow_cfg;
fwl_ops->set_fwl_region = ti_sci_cmd_set_fwl_region;
fwl_ops->get_fwl_region = ti_sci_cmd_get_fwl_region;
fwl_ops->change_fwl_owner = ti_sci_cmd_change_fwl_owner;
}
/**
* ti_sci_get_handle_from_sysfw() - Get the TI SCI handle of the SYSFW
* @dev: Pointer to the SYSFW device
*
* Return: pointer to handle if successful, else EINVAL if invalid conditions
* are encountered.
*/
const
struct ti_sci_handle *ti_sci_get_handle_from_sysfw(struct udevice *sci_dev)
{
if (!sci_dev)
return ERR_PTR(-EINVAL);
struct ti_sci_info *info = dev_get_priv(sci_dev);
if (!info)
return ERR_PTR(-EINVAL);
struct ti_sci_handle *handle = &info->handle;
if (!handle)
return ERR_PTR(-EINVAL);
return handle;
}
/**
* ti_sci_get_handle() - Get the TI SCI handle for a device
* @dev: Pointer to device for which we want SCI handle
*
* Return: pointer to handle if successful, else EINVAL if invalid conditions
* are encountered.
*/
const struct ti_sci_handle *ti_sci_get_handle(struct udevice *dev)
{
if (!dev)
return ERR_PTR(-EINVAL);
struct udevice *sci_dev = dev_get_parent(dev);
return ti_sci_get_handle_from_sysfw(sci_dev);
}
/**
* ti_sci_get_by_phandle() - Get the TI SCI handle using DT phandle
* @dev: device node
* @propname: property name containing phandle on TISCI node
*
* Return: pointer to handle if successful, else appropriate error value.
*/
const struct ti_sci_handle *ti_sci_get_by_phandle(struct udevice *dev,
const char *property)
{
struct ti_sci_info *entry, *info = NULL;
u32 phandle, err;
ofnode node;
err = ofnode_read_u32(dev_ofnode(dev), property, &phandle);
if (err)
return ERR_PTR(err);
node = ofnode_get_by_phandle(phandle);
if (!ofnode_valid(node))
return ERR_PTR(-EINVAL);
list_for_each_entry(entry, &ti_sci_list, list)
if (ofnode_equal(dev_ofnode(entry->dev), node)) {
info = entry;
break;
}
if (!info)
return ERR_PTR(-ENODEV);
return &info->handle;
}
/**
* ti_sci_of_to_info() - generate private data from device tree
* @dev: corresponding system controller interface device
* @info: pointer to driver specific private data
*
* Return: 0 if all goes good, else appropriate error message.
*/
static int ti_sci_of_to_info(struct udevice *dev, struct ti_sci_info *info)
{
int ret;
ret = mbox_get_by_name(dev, "tx", &info->chan_tx);
if (ret) {
dev_err(dev, "%s: Acquiring Tx channel failed. ret = %d\n",
__func__, ret);
return ret;
}
ret = mbox_get_by_name(dev, "rx", &info->chan_rx);
if (ret) {
dev_err(dev, "%s: Acquiring Rx channel failed. ret = %d\n",
__func__, ret);
return ret;
}
/* Notify channel is optional. Enable only if populated */
ret = mbox_get_by_name(dev, "notify", &info->chan_notify);
if (ret) {
dev_dbg(dev, "%s: Acquiring notify channel failed. ret = %d\n",
__func__, ret);
}
info->host_id = dev_read_u32_default(dev, "ti,host-id",
info->desc->default_host_id);
info->is_secure = dev_read_bool(dev, "ti,secure-host");
return 0;
}
/**
* ti_sci_probe() - Basic probe
* @dev: corresponding system controller interface device
*
* Return: 0 if all goes good, else appropriate error message.
*/
static int ti_sci_probe(struct udevice *dev)
{
struct ti_sci_info *info;
int ret;
debug("%s(dev=%p)\n", __func__, dev);
info = dev_get_priv(dev);
info->desc = (void *)dev_get_driver_data(dev);
ret = ti_sci_of_to_info(dev, info);
if (ret) {
dev_err(dev, "%s: Probe failed with error %d\n", __func__, ret);
return ret;
}
info->dev = dev;
info->seq = 0xA;
list_add_tail(&info->list, &ti_sci_list);
ti_sci_setup_ops(info);
ret = ti_sci_cmd_get_revision(&info->handle);
INIT_LIST_HEAD(&info->dev_list);
return ret;
}
/*
* 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)
{
u16 set, free_bit;
for (set = 0; set < res->sets; set++) {
free_bit = find_first_zero_bit(res->desc[set].res_map,
res->desc[set].num);
if (free_bit != res->desc[set].num) {
set_bit(free_bit, res->desc[set].res_map);
return res->desc[set].start + free_bit;
}
}
return TI_SCI_RESOURCE_NULL;
}
/**
* ti_sci_release_resource() - Release a resource from TISCI resource.
* @res: Pointer to the TISCI resource
*/
void ti_sci_release_resource(struct ti_sci_resource *res, u16 id)
{
u16 set;
for (set = 0; set < res->sets; set++) {
if (res->desc[set].start <= id &&
(res->desc[set].num + res->desc[set].start) > id)
clear_bit(id - res->desc[set].start,
res->desc[set].res_map);
}
}
/**
* 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
* @of_prop: property name by which the resource are represented
*
* Note: This function expects of_prop to be in the form of tuples
* <type, subtype>. Allocates and initializes ti_sci_resource structure
* for each of_prop. Client driver can directly call
* ti_sci_(get_free, release)_resource apis for handling the resource.
*
* 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 udevice *dev, u32 dev_id, char *of_prop)
{
u32 resource_subtype;
struct ti_sci_resource *res;
bool valid_set = false;
int sets, i, ret;
u32 *temp;
res = devm_kzalloc(dev, sizeof(*res), GFP_KERNEL);
if (!res)
return ERR_PTR(-ENOMEM);
sets = dev_read_size(dev, of_prop);
if (sets < 0) {
dev_err(dev, "%s resource type ids not available\n", of_prop);
return ERR_PTR(sets);
}
temp = malloc(sets);
sets /= sizeof(u32);
res->sets = sets;
res->desc = devm_kcalloc(dev, res->sets, sizeof(*res->desc),
GFP_KERNEL);
if (!res->desc)
return ERR_PTR(-ENOMEM);
ret = dev_read_u32_array(dev, of_prop, temp, res->sets);
if (ret)
return ERR_PTR(-EINVAL);
for (i = 0; i < res->sets; i++) {
resource_subtype = temp[i];
ret = handle->ops.rm_core_ops.get_range(handle, dev_id,
resource_subtype,
&res->desc[i].start,
&res->desc[i].num);
if (ret) {
dev_dbg(dev, "type %d subtype %d not allocated for host %d\n",
dev_id, resource_subtype,
handle_to_ti_sci_info(handle)->host_id);
res->desc[i].start = 0;
res->desc[i].num = 0;
continue;
}
valid_set = true;
dev_dbg(dev, "res type = %d, subtype = %d, start = %d, num = %d\n",
dev_id, resource_subtype, res->desc[i].start,
res->desc[i].num);
res->desc[i].res_map =
devm_kzalloc(dev, BITS_TO_LONGS(res->desc[i].num) *
sizeof(*res->desc[i].res_map), GFP_KERNEL);
if (!res->desc[i].res_map)
return ERR_PTR(-ENOMEM);
}
if (valid_set)
return res;
return ERR_PTR(-EINVAL);
}
/* Description for K2G */
static const struct ti_sci_desc ti_sci_pmmc_k2g_desc = {
.default_host_id = 2,
/* 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 = 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 udevice_id ti_sci_ids[] = {
{
.compatible = "ti,k2g-sci",
.data = (ulong)&ti_sci_pmmc_k2g_desc
},
{
.compatible = "ti,am654-sci",
.data = (ulong)&ti_sci_pmmc_am654_desc
},
{ /* Sentinel */ },
};
U_BOOT_DRIVER(ti_sci) = {
.name = "ti_sci",
.id = UCLASS_FIRMWARE,
.of_match = ti_sci_ids,
.probe = ti_sci_probe,
.priv_auto = sizeof(struct ti_sci_info),
};
Reference in a new issue View git blame Copy permalink