mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-29 05:18:51 +09:00
![Lokesh Vutla](/assets/img/avatar_default.png)
TI-SCI message protocol provides support for controlling of various physical cores available in SoC. In order to control which host is capable of controlling a physical processor core, there is a processor access control list that needs to be populated as part of the board configuration data. Introduce support for the set of TI-SCI message protocol apis that provide us with this capability of controlling physical cores. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2034 lines
55 KiB
C
2034 lines
55 KiB
C
// 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 <mailbox.h>
|
|
#include <dm/device.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_desc - Description of SoC integration
|
|
* @host_id: Host identifier representing the compute entity
|
|
* @max_rx_timeout_us: Timeout for communication with SoC (in Microseconds)
|
|
* @max_msg_size: Maximum size of data per message that can be handled.
|
|
*/
|
|
struct ti_sci_desc {
|
|
u8 host_id;
|
|
int max_rx_timeout_us;
|
|
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;
|
|
bool is_secure;
|
|
u8 host_id;
|
|
u8 seq;
|
|
};
|
|
|
|
#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
|
|
*
|
|
* 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 < 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_us);
|
|
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);
|
|
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;
|
|
}
|
|
|
|
return ti_sci_get_response(info, xfer, &info->chan_rx);
|
|
}
|
|
|
|
/**
|
|
* 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, 0x0,
|
|
(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);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
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);
|
|
|
|
/* Response is expected, so need of any flags */
|
|
xfer = ti_sci_setup_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE, 0,
|
|
(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(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,
|
|
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,
|
|
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_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(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_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
|
|
* @proc_id: Processor ID this request is for
|
|
* @cert_addr: Memory address at which payload image certificate is located.
|
|
*
|
|
* 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,
|
|
u8 proc_id, u64 cert_addr)
|
|
{
|
|
struct ti_sci_msg_req_proc_auth_boot_image 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_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.processor_id = proc_id;
|
|
req.cert_addr_low = cert_addr & TISCI_ADDR_LOW_MASK;
|
|
req.cert_addr_high = (cert_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_hdr *)xfer->tx_message.buf;
|
|
|
|
if (!ti_sci_is_response_ack(resp))
|
|
ret = -ENODEV;
|
|
|
|
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_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_proc_ops *pops = &ops->proc_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->idle_device = ti_sci_cmd_idle_device;
|
|
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;
|
|
|
|
core_ops->reboot_device = ti_sci_cmd_core_reboot;
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* 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->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);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Description for AM654 */
|
|
static const struct ti_sci_desc ti_sci_sysfw_am654_desc = {
|
|
.host_id = 4,
|
|
.max_rx_timeout_us = 1000000,
|
|
.max_msg_size = 60,
|
|
};
|
|
|
|
static const struct udevice_id ti_sci_ids[] = {
|
|
{
|
|
.compatible = "ti,k2g-sci",
|
|
.data = (ulong)&ti_sci_sysfw_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_alloc_size = sizeof(struct ti_sci_info),
|
|
};
|