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u-boot/drivers/firmware/ti_sci.c
Sean Anderson e579230b37 firmware: ti_sci: Fix not calling dev_err with a device 
This converts calls to dev_err to get the device from ti_sci_info where
appropriate.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Nishanth Menon <nm@ti.com>
Tested-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-09-30 08:52:24 -04:00

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// 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_alloc_size = sizeof(struct ti_sci_info),
};
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