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esp-idf/components/usb/ext_hub.c
Roman Leonov 548b03c69f feat(ext_hub): Added External Hub driver
2024-06-25 11:28:03 +02:00

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/*
* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include <stdint.h>
#include "esp_err.h"
#include "esp_log.h"
#include "esp_heap_caps.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "hal/usb_dwc_hal.h" // for OTG_HSPHY_INTERFACE
#include "usb_private.h"
#include "ext_hub.h"
#include "usb/usb_helpers.h"
typedef struct ext_port_s *ext_port_hdl_t; /* This will be implemented during ext_port driver implementation */
#define EXT_HUB_STATUS_CHANGE_FLAG (1 << 0)
#define EXT_HUB_STATUS_PORT1_CHANGE_FLAG (1 << 1)
#define EXT_HUB_CTRL_TRANSFER_MAX_DATA_LEN CONFIG_USB_HOST_CONTROL_TRANSFER_MAX_SIZE
/**
* @brief Device state
*
* Global state of the Device
*/
typedef enum {
EXT_HUB_STATE_ATTACHED, /**< Device attached, but not state is unknown (no: Hub Descriptor, Device status and Hub status) */
EXT_HUB_STATE_CONFIGURED, /**< Device attached and configured (has Hub Descriptor, Device status and Hub status were requested )*/
EXT_HUB_STATE_SUSPENDED, /**< Device suspended */
EXT_HUB_STATE_RELEASED, /**< Device released by USB Host driver (device could still be present on bus) */
EXT_HUB_STATE_FAILED /**< Device has internal error */
} ext_hub_state_t;
/**
* @brief Device stages
*
* During the lifecycle, Hub requires different actions. To implement interaction with external Hub the FSM, based on these stages is using.
*
* Entry:
* - Every new attached external Hub should start from EXT_HUB_STAGE_GET_HUB_DESCRIPTOR. Without Fetching Hub Descriptor, device is not configured and doesn't have any ports.
* - After handling the response during EXT_HUB_STAGE_CHECK_HUB_DESCRIPTOR, the External Hub Driver configures the Device according to the data from Hub Descriptor.
* - After completion of any stage, the Device does back to the IDLE stage and waits for another request. Source of the request could be: EP1 INT callback (the Hub or Ports changes) or external call.
* - Stages, that don't required response handling could not end up with fail.
*/
typedef enum {
// Device in IDLE state
EXT_HUB_STAGE_IDLE = 0, /**< Device in idle state and do not fulfill any actions */
// Stages, required response handling
EXT_HUB_STAGE_GET_DEVICE_STATUS, /**< Device requests Device Status. For more details, refer to 9.4.5 Get Status of usb_20 */
EXT_HUB_STAGE_CHECK_DEVICE_STATUS, /**< Device received the Device Status and required its' handling */
EXT_HUB_STAGE_GET_HUB_DESCRIPTOR, /**< Device requests Hub Descriptor. For more details, refer to 11.24.2.5 Get Hub Descriptor of usb_20 */
EXT_HUB_STAGE_CHECK_HUB_DESCRIPTOR, /**< Device received the Hub Descriptor and requires its' handling */
EXT_HUB_STAGE_GET_HUB_STATUS, /**< Device requests Hub Status. For more details, refer to 11.24.2.6 Get Hub Status of usb_20 */
EXT_HUB_STAGE_CHECK_HUB_STATUS, /**< Device received the Hub Status and requires its' handling */
// Stages, don't required response handling
EXT_HUB_STAGE_PORT_FEATURE, /**< Device completed the Port Feature class-specific request (Set Feature or Clear Feature). For more details, refer to 11.24.2 Class-specific Requests of usb_20 */
EXT_HUB_STAGE_PORT_STATUS_REQUEST, /**< Device completed the Port Get Status class-specific request. For more details, refer to 11.24.2 Class-specific Requests of usb_20 */
EXT_HUB_STAGE_FAILURE /**< Device has internal error and requires handling */
} ext_hub_stage_t;
const char *const ext_hub_stage_strings[] = {
"IDLE",
"GET_DEVICE_STATUS",
"CHECK_DEVICE_STATUS",
"GET_HUB_DESCRIPTOR",
"CHECK_HUB_DESCRIPTOR",
"GET_HUB_STATUS",
"CHECK_HUB_STATUS",
"PORT_FEATURE",
"PORT_STATUS_REQUEST",
"FAILURE"
};
/**
* @brief Device action flags
*/
typedef enum {
DEV_ACTION_EP0_COMPLETE = (1 << 1), /**< Device complete one of stages, requires handling */
DEV_ACTION_EP1_FLUSH = (1 << 2), /**< Device's Interrupt EP needs to be flushed */
DEV_ACTION_EP1_DEQUEUE = (1 << 3), /**< Device's Interrupt EP needs to be dequeued */
DEV_ACTION_EP1_CLEAR = (1 << 4), /**< Device's Interrupt EP needs to be cleared */
DEV_ACTION_REQ = (1 << 5), /**< Device has new actions and required handling */
DEV_ACTION_ERROR = (1 << 6), /**< Device encounters an error */
DEV_ACTION_GONE = (1 << 7), /**< Device was gone */
DEV_ACTION_RELEASE = (1 << 8), /**< Device was released */
DEV_ACTION_FREE = (1 << 9), /**< Device should be freed */
} dev_action_t;
typedef struct ext_hub_s ext_hub_dev_t;
/**
* @brief External Hub device configuration parameters for device allocation
*/
typedef struct {
usb_device_handle_t dev_hdl; /**< Device's handle */
uint8_t dev_addr; /**< Device's bus address */
const usb_intf_desc_t *iface_desc; /**< Device's Interface Descriptor pointer */
const usb_ep_desc_t *ep_in_desc; /**< Device's IN Endpoint Descriptor pointer */
} device_config_t;
struct ext_hub_s {
struct {
TAILQ_ENTRY(ext_hub_s) tailq_entry;
union {
struct {
uint32_t in_pending_list: 1; /**< Device is in pending list */
uint32_t waiting_free: 1; /**< Device waiting to be freed */
uint32_t is_gone: 1; /**< Device is gone */
uint32_t reserved29: 29; /**< Reserved */
};
uint32_t val; /**< Device's flags value */
} flags;
uint32_t action_flags; /**< Device's action flags */
ext_hub_state_t state; /**< Device's state */
ext_hub_stage_t stage; /**< Device's stage */
} dynamic; /**< Dynamic members require a critical section */
struct {
// For optimisation & debug only
uint8_t iface_num; /**< Device's bInterfaceNum */
// Driver purpose
uint8_t dev_addr; /**< Device's bus address */
usb_device_handle_t dev_hdl; /**< Device's handle */
urb_t *ctrl_urb; /**< Device's Control pipe transfer URB */
urb_t *in_urb; /**< Device's Interrupt pipe URB */
usbh_ep_handle_t ep_in_hdl; /**< Device's Interrupt EP handle */
usb_hub_descriptor_t *hub_desc; /**< Device's Hub descriptor pointer. Could be NULL when not requested */
uint8_t maxchild; /**< Number of ports. Could be 0 for some Hubs. */
ext_port_hdl_t *ports; /**< Flexible array of Ports. Could be NULL, when maxchild is 0 */
} constant; /**< Constant members. Do not change after installation thus do not require a critical section or mutex */
};
typedef struct {
struct {
TAILQ_HEAD(ext_hubs, ext_hub_s) ext_hubs_tailq; /**< Idle tailq */
TAILQ_HEAD(ext_hubs_cb, ext_hub_s) ext_hubs_pending_tailq; /**< Pending tailq */
} dynamic; /**< Dynamic members require a critical section */
struct {
ext_hub_cb_t proc_req_cb; /**< Process callback */
void *proc_req_cb_arg; /**< Process callback argument */
const ext_hub_port_driver_t* port_driver; /**< External Port Driver */
} constant; /**< Constant members. Do not change after installation thus do not require a critical section or mutex */
} ext_hub_driver_t;
static ext_hub_driver_t *p_ext_hub_driver = NULL;
static portMUX_TYPE ext_hub_driver_lock = portMUX_INITIALIZER_UNLOCKED;
const char *EXT_HUB_TAG = "EXT_HUB";
// -----------------------------------------------------------------------------
// ------------------------------- Helpers -------------------------------------
// -----------------------------------------------------------------------------
#define EXT_HUB_ENTER_CRITICAL() portENTER_CRITICAL(&ext_hub_driver_lock)
#define EXT_HUB_EXIT_CRITICAL() portEXIT_CRITICAL(&ext_hub_driver_lock)
#define EXT_HUB_ENTER_CRITICAL_SAFE() portENTER_CRITICAL_SAFE(&ext_hub_driver_lock)
#define EXT_HUB_EXIT_CRITICAL_SAFE() portEXIT_CRITICAL_SAFE(&ext_hub_driver_lock)
#define EXT_HUB_CHECK(cond, ret_val) ({ \
if (!(cond)) { \
return (ret_val); \
} \
})
#define EXT_HUB_CHECK_FROM_CRIT(cond, ret_val) ({ \
if (!(cond)) { \
EXT_HUB_EXIT_CRITICAL(); \
return ret_val; \
} \
})
// -----------------------------------------------------------------------------
// ----------------------- Forward declaration ---------------------------------
// -----------------------------------------------------------------------------
static bool _device_set_actions(ext_hub_dev_t *ext_hub_dev, uint32_t action_flags);
static void device_disable(ext_hub_dev_t *ext_hub_dev);
static void device_error(ext_hub_dev_t *ext_hub_dev);
static void device_status_change_handle(ext_hub_dev_t *ext_hub_dev, const uint8_t* data, const int length);
// -----------------------------------------------------------------------------
// ---------------------- Callbacks (implementation) ---------------------------
// -----------------------------------------------------------------------------
static bool interrupt_pipe_cb(usbh_ep_handle_t ep_hdl, usbh_ep_event_t ep_event, void *user_arg, bool in_isr)
{
uint32_t action_flags;
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)user_arg;
switch (ep_event) {
case USBH_EP_EVENT_URB_DONE: {
// A interrupt transfer completed on EP1's pipe . We need to dequeue it
action_flags = DEV_ACTION_EP1_DEQUEUE;
break;
case USBH_EP_EVENT_ERROR_XFER:
case USBH_EP_EVENT_ERROR_URB_NOT_AVAIL:
case USBH_EP_EVENT_ERROR_OVERFLOW:
// EP1's pipe has encountered an error. We need to retire all URBs, dequeue them, then make the pipe active again
action_flags = DEV_ACTION_EP1_FLUSH |
DEV_ACTION_EP1_DEQUEUE |
DEV_ACTION_EP1_CLEAR;
if (in_isr) {
ESP_EARLY_LOGE(EXT_HUB_TAG, "Device %d EP1 Error", ext_hub_dev->constant.dev_addr);
} else {
ESP_LOGE(EXT_HUB_TAG, "Device %d EP1 Error", ext_hub_dev->constant.dev_addr);
}
break;
case USBH_EP_EVENT_ERROR_STALL:
// EP1's pipe encountered a "protocol stall". We just need to dequeue URBs then make the pipe active again
action_flags = DEV_ACTION_EP1_DEQUEUE | DEV_ACTION_EP1_CLEAR;
if (in_isr) {
ESP_EARLY_LOGE(EXT_HUB_TAG, "Device %d EP1 STALL", ext_hub_dev->constant.dev_addr);
} else {
ESP_LOGE(EXT_HUB_TAG, "Device %d EP1 STALL", ext_hub_dev->constant.dev_addr);
}
break;
}
default:
action_flags = 0;
break;
}
EXT_HUB_ENTER_CRITICAL_SAFE();
bool call_proc_req_cb = _device_set_actions(ext_hub_dev, action_flags);
EXT_HUB_EXIT_CRITICAL_SAFE();
bool yield = false;
if (call_proc_req_cb) {
yield = p_ext_hub_driver->constant.proc_req_cb(in_isr, p_ext_hub_driver->constant.proc_req_cb_arg);
}
return yield;
}
/**
* @brief Control transfer completion callback
*
* Is called by lower logic when transfer is completed with or without error
*
* @param[in] ctrl_xfer Pointer to a transfer buffer
*/
static void control_transfer_complete_cb(usb_transfer_t *ctrl_xfer)
{
bool call_proc_req_cb = false;
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *) ctrl_xfer->context;
EXT_HUB_ENTER_CRITICAL();
call_proc_req_cb = _device_set_actions(ext_hub_dev, DEV_ACTION_EP0_COMPLETE);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
}
static void interrupt_transfer_complete_cb(usb_transfer_t *intr_xfer)
{
assert(intr_xfer);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)intr_xfer->context;
assert(ext_hub_dev);
switch (intr_xfer->status) {
case USB_TRANSFER_STATUS_COMPLETED:
ESP_LOG_BUFFER_HEXDUMP(EXT_HUB_TAG, intr_xfer->data_buffer, intr_xfer->actual_num_bytes, ESP_LOG_VERBOSE);
device_status_change_handle(ext_hub_dev, intr_xfer->data_buffer, intr_xfer->actual_num_bytes);
break;
case USB_TRANSFER_STATUS_NO_DEVICE:
// Device was removed, nothing to do
break;
case USB_TRANSFER_STATUS_CANCELED:
// Cancellation due to USB Host uninstall routine
device_disable(ext_hub_dev);
break;
default:
// Any other error
ESP_LOGE(EXT_HUB_TAG, "[%d] Interrupt transfer failed, status %d", ext_hub_dev->constant.dev_addr, intr_xfer->status);
device_error(ext_hub_dev);
break;
}
}
// -----------------------------------------------------------------------------
// --------------------------- Internal Logic ---------------------------------
// -----------------------------------------------------------------------------
static bool _device_set_actions(ext_hub_dev_t *ext_hub_dev, uint32_t action_flags)
{
/*
THIS FUNCTION MUST BE CALLED FROM A CRITICAL SECTION
*/
if (action_flags == 0) {
return false;
}
bool call_proc_req_cb;
// Check if device is already on the callback list
if (!ext_hub_dev->dynamic.flags.in_pending_list) {
// Move device form idle device list to callback device list
TAILQ_REMOVE(&p_ext_hub_driver->dynamic.ext_hubs_tailq, ext_hub_dev, dynamic.tailq_entry);
TAILQ_INSERT_TAIL(&p_ext_hub_driver->dynamic.ext_hubs_pending_tailq, ext_hub_dev, dynamic.tailq_entry);
ext_hub_dev->dynamic.action_flags |= action_flags;
ext_hub_dev->dynamic.flags.in_pending_list = 1;
call_proc_req_cb = true;
} else {
// The device is already on the callback list, thus a processing request is already pending.
ext_hub_dev->dynamic.action_flags |= action_flags;
call_proc_req_cb = false;
}
return call_proc_req_cb;
}
static esp_err_t device_enable_int_ep(ext_hub_dev_t *ext_hub_dev)
{
esp_err_t ret = ESP_OK;
ret = usbh_ep_enqueue_urb(ext_hub_dev->constant.ep_in_hdl, ext_hub_dev->constant.in_urb);
if (ret != ESP_OK) {
ESP_LOGE(EXT_HUB_TAG, "Failed to submit in urb (%#x)", ret);
return ret;
}
return ret;
}
static void device_has_changed(ext_hub_dev_t *ext_hub_dev)
{
// TODO: IDF-10053 Hub status change handling
// After getting the IRQ about Hub status change we need to request status
// device_get_status(ext_hub_dev);
ESP_LOGW(EXT_HUB_TAG, "Hub status change has not been implemented yet");
device_enable_int_ep(ext_hub_dev);
}
// Figure 11-22. Hub and Port Status Change Bitmap
static void device_status_change_handle(ext_hub_dev_t *ext_hub_dev, const uint8_t* data, const int length)
{
uint8_t port_idx = 0;
uint8_t max_port_num = (sizeof(uint8_t) * 8) - 1; // Maximal Port number in one uint8_t byte
// Hub status change
if (data[0] & EXT_HUB_STATUS_CHANGE_FLAG) {
device_has_changed(ext_hub_dev);
}
// Ports status change
for (uint8_t i = 0; i < length; i++) {
for (uint8_t j = 0; j < max_port_num; j++) {
if (data[i] & (EXT_HUB_STATUS_PORT1_CHANGE_FLAG << j)) {
// Notify Hub driver
port_idx = (j + (i * max_port_num));
if (p_ext_hub_driver->constant.port_driver) {
p_ext_hub_driver->constant.port_driver->get_status(ext_hub_dev->constant.ports[port_idx]);
}
}
}
}
}
static void device_disable(ext_hub_dev_t *ext_hub_dev)
{
bool call_proc_req_cb = false;
ESP_LOGD(EXT_HUB_TAG, "[%d] Device disable", ext_hub_dev->constant.dev_addr);
if (ext_hub_dev->dynamic.state == EXT_HUB_STATE_RELEASED || ext_hub_dev->dynamic.flags.is_gone) {
ESP_LOGD(EXT_HUB_TAG, "Device in release state or already gone");
return;
}
// Mark all Ports are disable and then gone
for (uint8_t i = 0; i < ext_hub_dev->constant.maxchild; i++) {
if (p_ext_hub_driver->constant.port_driver) {
// TODO: IDF-10054 Hubs should disable their ports power
// Meanwhile, mark the port as gone
p_ext_hub_driver->constant.port_driver->gone(ext_hub_dev->constant.ports[i]);
}
}
// Close the device
ESP_ERROR_CHECK(usbh_dev_close(ext_hub_dev->constant.dev_hdl));
EXT_HUB_ENTER_CRITICAL();
call_proc_req_cb = _device_set_actions(ext_hub_dev, DEV_ACTION_FREE);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
}
static void device_error(ext_hub_dev_t *ext_hub_dev)
{
bool call_proc_req_cb = false;
EXT_HUB_ENTER_CRITICAL();
call_proc_req_cb = _device_set_actions(ext_hub_dev, DEV_ACTION_ERROR);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
}
static void device_release(ext_hub_dev_t *ext_hub_dev)
{
bool call_proc_req_cb = false;
ESP_LOGD(EXT_HUB_TAG, "[%d] Device release", ext_hub_dev->constant.dev_addr);
// Mark all Ports are disable and then gone
for (uint8_t i = 0; i < ext_hub_dev->constant.maxchild; i++) {
if (p_ext_hub_driver->constant.port_driver) {
p_ext_hub_driver->constant.port_driver->gone(ext_hub_dev->constant.ports[i]);
}
}
// Release IN EP
ESP_ERROR_CHECK(usbh_ep_command(ext_hub_dev->constant.ep_in_hdl, USBH_EP_CMD_HALT));
// Close the device
ESP_ERROR_CHECK(usbh_dev_close(ext_hub_dev->constant.dev_hdl));
EXT_HUB_ENTER_CRITICAL();
call_proc_req_cb = _device_set_actions(ext_hub_dev, DEV_ACTION_FREE);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
}
static esp_err_t device_alloc_desc(ext_hub_dev_t *ext_hub_hdl, const usb_hub_descriptor_t *hub_desc)
{
// Allocate memory to store the configuration descriptor
usb_hub_descriptor_t *desc = heap_caps_malloc(hub_desc->bDescLength, MALLOC_CAP_DEFAULT); // Buffer to copy over full configuration descriptor (wTotalLength)
if (desc == NULL) {
return ESP_ERR_NO_MEM;
}
// Copy the hub descriptor
memcpy(desc, hub_desc, hub_desc->bDescLength);
// Assign the hub descriptor to the device object
assert(ext_hub_hdl->constant.hub_desc == NULL);
ext_hub_hdl->constant.hub_desc = desc;
return ESP_OK;
}
static esp_err_t device_alloc(device_config_t *config, ext_hub_dev_t **ext_hub_dev)
{
esp_err_t ret;
urb_t *ctrl_urb = NULL;
urb_t *in_urb = NULL;
#if !ENABLE_MULTIPLE_HUBS
usb_device_info_t dev_info;
ESP_ERROR_CHECK(usbh_dev_get_info(config->dev_hdl, &dev_info));
if (dev_info.parent.dev_hdl) {
ESP_LOGW(EXT_HUB_TAG, "Multiple Hubs not supported, use menuconfig to enable feature");
ret = ESP_ERR_NOT_SUPPORTED;
goto fail;
}
#endif // ENABLE_MULTIPLE_HUBS
ext_hub_dev_t *hub_dev = heap_caps_calloc(1, sizeof(ext_hub_dev_t), MALLOC_CAP_DEFAULT);
if (hub_dev == NULL) {
ESP_LOGE(EXT_HUB_TAG, "Unable to allocate device");
ret = ESP_ERR_NO_MEM;
goto fail;
}
// Allocate Control transfer URB
ctrl_urb = urb_alloc(sizeof(usb_setup_packet_t) + EXT_HUB_CTRL_TRANSFER_MAX_DATA_LEN, 0);
if (ctrl_urb == NULL) {
ESP_LOGE(EXT_HUB_TAG, "Unable to allocate Control URB");
ret = ESP_ERR_NO_MEM;
goto ctrl_urb_fail;
}
in_urb = urb_alloc(config->ep_in_desc->wMaxPacketSize, 0);
// Allocate Interrupt transfer URB
if (in_urb == NULL) {
ESP_LOGE(EXT_HUB_TAG, "Unable to allocate Interrupt URB");
ret = ESP_ERR_NO_MEM;
goto in_urb_fail;
}
usbh_ep_handle_t ep_hdl;
usbh_ep_config_t ep_config = {
.bInterfaceNumber = config->iface_desc->bInterfaceNumber,
.bAlternateSetting = config->iface_desc->bAlternateSetting,
.bEndpointAddress = config->ep_in_desc->bEndpointAddress,
.ep_cb = interrupt_pipe_cb,
.ep_cb_arg = (void *)hub_dev,
.context = (void *)hub_dev,
};
ret = usbh_ep_alloc(config->dev_hdl, &ep_config, &ep_hdl);
if (ret != ESP_OK) {
ESP_LOGE(EXT_HUB_TAG, "Endpoint allocation failure (%#x)", ret);
goto ep_fail;
}
// Configure Control transfer URB
ctrl_urb->usb_host_client = (void *) p_ext_hub_driver;
ctrl_urb->transfer.callback = control_transfer_complete_cb;
ctrl_urb->transfer.context = (void *) hub_dev;
// Client is a memory address of the p_ext_hub_driver driver object
in_urb->usb_host_client = (void *) p_ext_hub_driver;
in_urb->transfer.callback = interrupt_transfer_complete_cb;
in_urb->transfer.context = (void *) hub_dev;
in_urb->transfer.num_bytes = config->ep_in_desc->wMaxPacketSize;
// Save constant parameters
hub_dev->constant.ep_in_hdl = ep_hdl;
hub_dev->constant.ctrl_urb = ctrl_urb;
hub_dev->constant.in_urb = in_urb;
hub_dev->constant.dev_hdl = config->dev_hdl;
hub_dev->constant.dev_addr = config->dev_addr;
hub_dev->constant.iface_num = config->iface_desc->bInterfaceNumber;
// We will update number of ports during Hub Descriptor handling stage
hub_dev->constant.maxchild = 0;
hub_dev->dynamic.flags.val = 0;
hub_dev->dynamic.state = EXT_HUB_STATE_ATTACHED;
hub_dev->dynamic.stage = EXT_HUB_STAGE_IDLE;
EXT_HUB_ENTER_CRITICAL();
TAILQ_INSERT_TAIL(&p_ext_hub_driver->dynamic.ext_hubs_tailq, hub_dev, dynamic.tailq_entry);
EXT_HUB_EXIT_CRITICAL();
ESP_LOGD(EXT_HUB_TAG, "[%d] New device (iface %d)", config->dev_addr, hub_dev->constant.iface_num);
*ext_hub_dev = hub_dev;
return ret;
ep_fail:
urb_free(in_urb);
in_urb_fail:
urb_free(ctrl_urb);
ctrl_urb_fail:
heap_caps_free(hub_dev);
fail:
return ret;
}
static esp_err_t device_configure(ext_hub_dev_t *ext_hub_dev)
{
EXT_HUB_CHECK(ext_hub_dev->constant.hub_desc != NULL, ESP_ERR_INVALID_STATE);
usb_hub_descriptor_t *hub_desc = ext_hub_dev->constant.hub_desc;
ESP_LOGD(EXT_HUB_TAG, "[%d] Device configure (iface %d)",
ext_hub_dev->constant.dev_addr,
ext_hub_dev->constant.iface_num);
if (hub_desc->wHubCharacteristics.compound) {
ESP_LOGD(EXT_HUB_TAG, "\tCompound device");
} else {
ESP_LOGD(EXT_HUB_TAG, "\tStandalone HUB");
}
ESP_LOGD(EXT_HUB_TAG, "\t%d external port%s",
ext_hub_dev->constant.hub_desc->bNbrPorts,
(ext_hub_dev->constant.hub_desc->bNbrPorts == 1) ? "" : "s");
switch (hub_desc->wHubCharacteristics.power_switching) {
case USB_W_HUB_CHARS_PORT_PWR_CTRL_NO:
ESP_LOGD(EXT_HUB_TAG, "\tNo power switching (usb 1.0)");
break;
case USB_W_HUB_CHARS_PORT_PWR_CTRL_INDV:
ESP_LOGD(EXT_HUB_TAG, "\tIndividual port power switching");
break;
default:
// USB_W_HUB_CHARS_PORT_PWR_CTRL_ALL
ESP_LOGD(EXT_HUB_TAG, "\tAll ports power at once");
break;
}
switch (hub_desc->wHubCharacteristics.ovr_current_protect) {
case USB_W_HUB_CHARS_PORT_OVER_CURR_NO:
ESP_LOGD(EXT_HUB_TAG, "\tNo over-current protection");
break;
case USB_W_HUB_CHARS_PORT_OVER_CURR_INDV:
ESP_LOGD(EXT_HUB_TAG, "\tIndividual port over-current protection");
break;
default:
// USB_W_HUB_CHARS_PORT_OVER_CURR_ALL
ESP_LOGD(EXT_HUB_TAG, "\tGlobal over-current protection");
break;
}
if (hub_desc->wHubCharacteristics.indicator_support) {
ESP_LOGD(EXT_HUB_TAG, "\tPort indicators are supported");
}
ESP_LOGD(EXT_HUB_TAG, "\tPower on to power good time: %dms", hub_desc->bPwrOn2PwrGood * 2);
ESP_LOGD(EXT_HUB_TAG, "\tMaximum current: %d mA", hub_desc->bHubContrCurrent);
// Create External Port flexible array
ext_hub_dev->constant.ports = heap_caps_calloc(ext_hub_dev->constant.hub_desc->bNbrPorts, sizeof(ext_port_hdl_t), MALLOC_CAP_DEFAULT);
if (ext_hub_dev->constant.ports == NULL) {
ESP_LOGE(EXT_HUB_TAG, "Ports allocation err");
return ESP_ERR_NO_MEM;
}
// Update device port amount
ext_hub_dev->constant.maxchild = ext_hub_dev->constant.hub_desc->bNbrPorts;
// Create port and add it to pending list
for (uint8_t i = 0; i < ext_hub_dev->constant.maxchild; i++) {
if (p_ext_hub_driver->constant.port_driver) {
p_ext_hub_driver->constant.port_driver->new (NULL, (void**) &ext_hub_dev->constant.ports[i]);
}
}
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.state = EXT_HUB_STATE_CONFIGURED;
EXT_HUB_EXIT_CRITICAL();
return ESP_OK;
}
static void device_free(ext_hub_dev_t *ext_hub_dev)
{
ESP_LOGD(EXT_HUB_TAG, "[%d] Freeing device", ext_hub_dev->constant.dev_addr);
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.flags.waiting_free = 0;
TAILQ_REMOVE(&p_ext_hub_driver->dynamic.ext_hubs_tailq, ext_hub_dev, dynamic.tailq_entry);
EXT_HUB_EXIT_CRITICAL();
// Free ports
for (uint8_t i = 0; i < ext_hub_dev->constant.maxchild; i++) {
if (p_ext_hub_driver->constant.port_driver) {
p_ext_hub_driver->constant.port_driver->free(ext_hub_dev->constant.ports[i]);
}
}
if (ext_hub_dev->constant.hub_desc) {
heap_caps_free(ext_hub_dev->constant.hub_desc);
}
if (ext_hub_dev->constant.ports) {
heap_caps_free(ext_hub_dev->constant.ports);
}
ESP_ERROR_CHECK(usbh_ep_free(ext_hub_dev->constant.ep_in_hdl));
urb_free(ext_hub_dev->constant.ctrl_urb);
urb_free(ext_hub_dev->constant.in_urb);
heap_caps_free(ext_hub_dev);
}
static esp_err_t get_dev_by_hdl(usb_device_handle_t dev_hdl, ext_hub_dev_t **ext_hub_hdl)
{
esp_err_t ret = ESP_OK;
// Go through the Hubs lists to find the hub with the specified device address
ext_hub_dev_t *found_hub = NULL;
ext_hub_dev_t *hub = NULL;
EXT_HUB_ENTER_CRITICAL();
TAILQ_FOREACH(hub, &p_ext_hub_driver->dynamic.ext_hubs_pending_tailq, dynamic.tailq_entry) {
if (hub->constant.dev_hdl == dev_hdl) {
found_hub = hub;
goto exit;
}
}
TAILQ_FOREACH(hub, &p_ext_hub_driver->dynamic.ext_hubs_tailq, dynamic.tailq_entry) {
if (hub->constant.dev_hdl == dev_hdl) {
found_hub = hub;
goto exit;
}
}
exit:
if (found_hub == NULL) {
ret = ESP_ERR_NOT_FOUND;
}
EXT_HUB_EXIT_CRITICAL();
*ext_hub_hdl = found_hub;
return ret;
}
static esp_err_t get_dev_by_addr(uint8_t dev_addr, ext_hub_dev_t **ext_hub_hdl)
{
esp_err_t ret = ESP_OK;
// Go through the Hubs lists to find the Hub with the specified device address
ext_hub_dev_t *found_hub = NULL;
ext_hub_dev_t *hub = NULL;
EXT_HUB_ENTER_CRITICAL();
TAILQ_FOREACH(hub, &p_ext_hub_driver->dynamic.ext_hubs_pending_tailq, dynamic.tailq_entry) {
if (hub->constant.dev_addr == dev_addr) {
found_hub = hub;
goto exit;
}
}
TAILQ_FOREACH(hub, &p_ext_hub_driver->dynamic.ext_hubs_tailq, dynamic.tailq_entry) {
if (hub->constant.dev_addr == dev_addr) {
found_hub = hub;
goto exit;
}
}
exit:
if (found_hub == NULL) {
ret = ESP_ERR_NOT_FOUND;
}
EXT_HUB_EXIT_CRITICAL();
*ext_hub_hdl = found_hub;
return ret;
}
// -----------------------------------------------------------------------------
// -------------------------- Device handling ---------------------------------
// -----------------------------------------------------------------------------
static bool handle_hub_descriptor(ext_hub_dev_t *ext_hub_dev)
{
esp_err_t ret;
bool pass;
usb_transfer_t *ctrl_xfer = &ext_hub_dev->constant.ctrl_urb->transfer;
const usb_hub_descriptor_t *hub_desc = (const usb_hub_descriptor_t *)(ctrl_xfer->data_buffer + sizeof(usb_setup_packet_t));
if (ctrl_xfer->status != USB_TRANSFER_STATUS_COMPLETED) {
ESP_LOGE(EXT_HUB_TAG, "Bad transfer status %d: stage=%d", ctrl_xfer->status, ext_hub_dev->dynamic.stage);
return false;
}
ESP_LOG_BUFFER_HEXDUMP(EXT_HUB_TAG, ctrl_xfer->data_buffer, ctrl_xfer->actual_num_bytes, ESP_LOG_VERBOSE);
ret = device_alloc_desc(ext_hub_dev, hub_desc);
if (ret != ESP_OK) {
pass = false;
goto exit;
}
ret = device_configure(ext_hub_dev);
if (ret != ESP_OK) {
pass = false;
goto exit;
}
pass = true;
exit:
return pass;
}
static bool handle_device_status(ext_hub_dev_t *ext_hub_dev)
{
usb_transfer_t *ctrl_xfer = &ext_hub_dev->constant.ctrl_urb->transfer;
const usb_device_status_t *dev_status = (const usb_device_status_t *)(ctrl_xfer->data_buffer + sizeof(usb_setup_packet_t));
ESP_LOGD(EXT_HUB_TAG, "[%d] Device status: ", ext_hub_dev->constant.dev_addr);
ESP_LOGD(EXT_HUB_TAG, "\tPower: %s", dev_status->self_powered ? "self-powered" : "bus-powered");
ESP_LOGD(EXT_HUB_TAG, "\tRemoteWakeup: %s", dev_status->remote_wakeup ? "yes" : "no");
if (dev_status->remote_wakeup) {
// Device in remote_wakeup, we need send command Clear Device Feature: USB_W_VALUE_FEATURE_DEVICE_REMOTE_WAKEUP
// HEX codes of command: 00 01 01 00 00 00 00 00
// TODO: IDF-10055 Hub Support remote_wakeup feature
ESP_LOGW(EXT_HUB_TAG, "Remote Wakeup feature has not been implemented yet");
}
return true;
}
static bool handle_hub_status(ext_hub_dev_t *ext_hub_dev)
{
usb_transfer_t *ctrl_xfer = &ext_hub_dev->constant.ctrl_urb->transfer;
const usb_hub_status_t *hub_status = (const usb_hub_status_t *)(ctrl_xfer->data_buffer + sizeof(usb_setup_packet_t));
ESP_LOGD(EXT_HUB_TAG, "[%d] Hub status: ", ext_hub_dev->constant.dev_addr);
ESP_LOGD(EXT_HUB_TAG, "\tExternal power supply: %s", hub_status->wHubStatus.HUB_LOCAL_POWER ? "yes" : "no");
ESP_LOGD(EXT_HUB_TAG, "\tOvercurrent: %s", hub_status->wHubStatus.HUB_OVER_CURRENT ? "yes" : "no");
if (hub_status->wHubStatus.HUB_OVER_CURRENT) {
ESP_LOGE(EXT_HUB_TAG, "Device has overcurrent!");
// Hub has an overcurrent, we need to disable all port and/or disable parent port
// TODO: IDF-10056 Hubs overcurrent handling
ESP_LOGW(EXT_HUB_TAG, "Feature has not been implemented yet");
return false;
}
return true;
}
static bool device_control_request(ext_hub_dev_t *ext_hub_dev)
{
esp_err_t ret;
usb_transfer_t *transfer = &ext_hub_dev->constant.ctrl_urb->transfer;
switch (ext_hub_dev->dynamic.stage) {
case EXT_HUB_STAGE_GET_DEVICE_STATUS:
USB_SETUP_PACKET_INIT_GET_STATUS((usb_setup_packet_t *)transfer->data_buffer);
transfer->num_bytes = sizeof(usb_setup_packet_t) + sizeof(usb_device_status_t);
break;
case EXT_HUB_STAGE_GET_HUB_DESCRIPTOR:
USB_SETUP_PACKET_INIT_GET_HUB_DESCRIPTOR((usb_setup_packet_t *)transfer->data_buffer);
transfer->num_bytes = sizeof(usb_setup_packet_t) + sizeof(usb_hub_descriptor_t);
break;
case EXT_HUB_STAGE_GET_HUB_STATUS:
USB_SETUP_PACKET_INIT_GET_HUB_STATUS((usb_setup_packet_t *)transfer->data_buffer);
transfer->num_bytes = sizeof(usb_setup_packet_t) + sizeof(usb_hub_status_t);
break;
default:
// Should never occur
abort();
break;
}
ret = usbh_dev_submit_ctrl_urb(ext_hub_dev->constant.dev_hdl, ext_hub_dev->constant.ctrl_urb);
if (ret != ESP_OK) {
ESP_LOGE(EXT_HUB_TAG, "Failed to submit ctrl urb, error %#x", ret);
return false;
}
return true;
}
static bool device_control_response_handling(ext_hub_dev_t *ext_hub_dev)
{
bool stage_pass = false;
switch (ext_hub_dev->dynamic.stage) {
case EXT_HUB_STAGE_CHECK_DEVICE_STATUS:
stage_pass = handle_device_status(ext_hub_dev);
break;
case EXT_HUB_STAGE_CHECK_HUB_DESCRIPTOR:
stage_pass = handle_hub_descriptor(ext_hub_dev);
break;
case EXT_HUB_STAGE_CHECK_HUB_STATUS:
stage_pass = handle_hub_status(ext_hub_dev);
break;
default:
// Should never occur
abort();
break;
}
return stage_pass;
}
static bool stage_need_process(ext_hub_stage_t stage)
{
bool need_process_cb = false;
switch (stage) {
// Stages, required control transfer
case EXT_HUB_STAGE_GET_DEVICE_STATUS:
case EXT_HUB_STAGE_GET_HUB_DESCRIPTOR:
case EXT_HUB_STAGE_GET_HUB_STATUS:
// Error stage
case EXT_HUB_STAGE_FAILURE:
need_process_cb = true;
break;
default:
break;
}
return need_process_cb;
}
// return
// true - next stage requires the processing
// false - terminal stage
static bool device_set_next_stage(ext_hub_dev_t *ext_hub_dev, bool last_stage_pass)
{
bool need_process_cb;
ext_hub_stage_t last_stage = ext_hub_dev->dynamic.stage;
ext_hub_stage_t next_stage;
if (last_stage_pass) {
ESP_LOGD(EXT_HUB_TAG, "Stage %s OK", ext_hub_stage_strings[last_stage]);
if (last_stage == EXT_HUB_STAGE_GET_DEVICE_STATUS ||
last_stage == EXT_HUB_STAGE_GET_HUB_DESCRIPTOR ||
last_stage == EXT_HUB_STAGE_GET_HUB_STATUS) {
// Simply increment to get the next stage
next_stage = last_stage + 1;
} else {
// Terminal stages, move to IDLE
next_stage = EXT_HUB_STAGE_IDLE;
}
} else {
ESP_LOGE(EXT_HUB_TAG, "Stage %s FAILED", ext_hub_stage_strings[last_stage]);
// These stages cannot fail
assert(last_stage != EXT_HUB_STAGE_PORT_FEATURE ||
last_stage != EXT_HUB_STAGE_PORT_STATUS_REQUEST);
next_stage = EXT_HUB_STAGE_FAILURE;
}
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.stage = next_stage;
need_process_cb = stage_need_process(next_stage);
EXT_HUB_EXIT_CRITICAL();
return need_process_cb;
}
static void handle_port_feature(ext_hub_dev_t *ext_hub_dev)
{
usb_transfer_t *ctrl_xfer = &ext_hub_dev->constant.ctrl_urb->transfer;
uint8_t port_num = USB_SETUP_PACKET_GET_PORT((usb_setup_packet_t *)ctrl_xfer->data_buffer);
uint8_t port_idx = port_num - 1;
assert(port_idx < ext_hub_dev->constant.maxchild);
if (p_ext_hub_driver->constant.port_driver) {
p_ext_hub_driver->constant.port_driver->get_status(ext_hub_dev->constant.ports[port_idx]);
}
}
static void handle_port_status(ext_hub_dev_t *ext_hub_dev)
{
usb_transfer_t *ctrl_xfer = &ext_hub_dev->constant.ctrl_urb->transfer;
uint8_t port_num = USB_SETUP_PACKET_GET_PORT((usb_setup_packet_t *)ctrl_xfer->data_buffer);
uint8_t port_idx = port_num - 1;
const usb_port_status_t *new_status = (const usb_port_status_t *)(ctrl_xfer->data_buffer + sizeof(usb_setup_packet_t));
assert(port_idx < ext_hub_dev->constant.maxchild);
if (p_ext_hub_driver->constant.port_driver) {
p_ext_hub_driver->constant.port_driver->set_status(ext_hub_dev->constant.ports[port_idx], new_status);
}
}
static void handle_device(ext_hub_dev_t *ext_hub_dev)
{
bool call_proc_req_cb;
bool stage_pass = false;
// FSM for external Hub
switch (ext_hub_dev->dynamic.stage) {
case EXT_HUB_STAGE_IDLE:
break;
case EXT_HUB_STAGE_GET_DEVICE_STATUS:
case EXT_HUB_STAGE_GET_HUB_DESCRIPTOR:
case EXT_HUB_STAGE_GET_HUB_STATUS:
stage_pass = device_control_request(ext_hub_dev);
break;
case EXT_HUB_STAGE_CHECK_HUB_DESCRIPTOR:
stage_pass = device_control_response_handling(ext_hub_dev);
break;
case EXT_HUB_STAGE_PORT_FEATURE:
handle_port_feature(ext_hub_dev);
stage_pass = true;
break;
case EXT_HUB_STAGE_PORT_STATUS_REQUEST:
handle_port_status(ext_hub_dev);
stage_pass = true;
break;
case EXT_HUB_STAGE_FAILURE:
ESP_LOGW(EXT_HUB_TAG, "External Hub device failure handling has not been implemented yet");
// device_error(ext_hub_dev);
break;
default:
// Should never occur
abort();
break;
}
call_proc_req_cb = device_set_next_stage(ext_hub_dev, stage_pass);
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
}
static void handle_ep1_flush(ext_hub_dev_t *ext_hub_dev)
{
ESP_ERROR_CHECK(usbh_ep_command(ext_hub_dev->constant.ep_in_hdl, USBH_EP_CMD_HALT));
ESP_ERROR_CHECK(usbh_ep_command(ext_hub_dev->constant.ep_in_hdl, USBH_EP_CMD_FLUSH));
}
static void handle_ep1_dequeue(ext_hub_dev_t *ext_hub_dev)
{
// Dequeue all URBs and run their transfer callback
ESP_LOGD(EXT_HUB_TAG, "[%d] Interrupt dequeue", ext_hub_dev->constant.dev_addr);
urb_t *urb;
usbh_ep_dequeue_urb(ext_hub_dev->constant.ep_in_hdl, &urb);
while (urb != NULL) {
// Clear the transfer's in-flight flag to indicate the transfer is no longer in-flight
urb->usb_host_inflight = false;
urb->transfer.callback(&urb->transfer);
usbh_ep_dequeue_urb(ext_hub_dev->constant.ep_in_hdl, &urb);
}
}
static void handle_ep1_clear(ext_hub_dev_t *ext_hub_dev)
{
// We allow the pipe command to fail just in case the pipe becomes invalid mid command
usbh_ep_command(ext_hub_dev->constant.ep_in_hdl, USBH_EP_CMD_CLEAR);
}
static void handle_error(ext_hub_dev_t *ext_hub_dev)
{
// TODO: IDF-10057 Hub handling error
ESP_LOGW(EXT_HUB_TAG, "%s has not been implemented yet", __FUNCTION__);
device_disable(ext_hub_dev);
}
static void handle_gone(ext_hub_dev_t *ext_hub_dev)
{
bool call_proc_req_cb = false;
// Set the flags
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.flags.waiting_free = 1;
call_proc_req_cb = _device_set_actions(ext_hub_dev, DEV_ACTION_FREE);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
}
// -----------------------------------------------------------------------------
// ------------------------------ Driver ---------------------------------------
// -----------------------------------------------------------------------------
esp_err_t ext_hub_install(const ext_hub_config_t *config)
{
esp_err_t ret;
ext_hub_driver_t *ext_hub_drv = heap_caps_calloc(1, sizeof(ext_hub_driver_t), MALLOC_CAP_DEFAULT);
EXT_HUB_CHECK(ext_hub_drv != NULL, ESP_ERR_NO_MEM);
// Save callbacks
ext_hub_drv->constant.proc_req_cb = config->proc_req_cb;
ext_hub_drv->constant.proc_req_cb_arg = config->proc_req_cb_arg;
// Copy Port driver pointer
ext_hub_drv->constant.port_driver = config->port_driver;
if (ext_hub_drv->constant.port_driver == NULL) {
ESP_LOGW(EXT_HUB_TAG, "Port Driver has not been installed");
}
TAILQ_INIT(&ext_hub_drv->dynamic.ext_hubs_tailq);
TAILQ_INIT(&ext_hub_drv->dynamic.ext_hubs_pending_tailq);
EXT_HUB_ENTER_CRITICAL();
if (p_ext_hub_driver != NULL) {
EXT_HUB_EXIT_CRITICAL();
ret = ESP_ERR_INVALID_STATE;
goto fail;
}
p_ext_hub_driver = ext_hub_drv;
EXT_HUB_EXIT_CRITICAL();
ESP_LOGD(EXT_HUB_TAG, "Driver installed");
return ESP_OK;
fail:
heap_caps_free(ext_hub_drv);
return ret;
}
esp_err_t ext_hub_uninstall(void)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_CHECK_FROM_CRIT(TAILQ_EMPTY(&p_ext_hub_driver->dynamic.ext_hubs_tailq), ESP_ERR_INVALID_STATE);
EXT_HUB_CHECK_FROM_CRIT(TAILQ_EMPTY(&p_ext_hub_driver->dynamic.ext_hubs_pending_tailq), ESP_ERR_INVALID_STATE);
ext_hub_driver_t *ext_hub_drv = p_ext_hub_driver;
p_ext_hub_driver = NULL;
EXT_HUB_EXIT_CRITICAL();
heap_caps_free(ext_hub_drv);
ESP_LOGD(EXT_HUB_TAG, "Driver uninstalled");
return ESP_OK;
}
void *ext_hub_get_client(void)
{
bool driver_installed = false;
EXT_HUB_ENTER_CRITICAL();
driver_installed = (p_ext_hub_driver != NULL);
EXT_HUB_EXIT_CRITICAL();
return (driver_installed) ? (void*) p_ext_hub_driver : NULL;
}
// -----------------------------------------------------------------------------
// -------------------------- External Hub API ---------------------------------
// -----------------------------------------------------------------------------
esp_err_t ext_hub_get_handle(usb_device_handle_t dev_hdl, ext_hub_handle_t *ext_hub_hdl)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
return get_dev_by_hdl(dev_hdl, ext_hub_hdl);
}
static esp_err_t find_first_intf_desc(const usb_config_desc_t *config_desc, device_config_t *hub_config)
{
bool iface_found = false;
const usb_ep_desc_t *ep_in_desc = NULL;
int offset = 0;
const usb_intf_desc_t *next_intf_desc = (const usb_intf_desc_t *)usb_parse_next_descriptor_of_type(
(const usb_standard_desc_t *)config_desc,
config_desc->wTotalLength,
USB_B_DESCRIPTOR_TYPE_INTERFACE,
&offset);
while (next_intf_desc != NULL) {
if (iface_found) {
// TODO: IDF-10058 Hubs support interface selection (HS)
ESP_LOGW(EXT_HUB_TAG, "Device has several Interfaces, selection has not been implemented yet. Using first.");
break;
}
// Parse all interfaces
if (USB_CLASS_HUB == next_intf_desc->bInterfaceClass) {
// We have found the first interface descriptor with matching bInterfaceNumber
#if (OTG_HSPHY_INTERFACE != 0)
// TODO: IDF-10059 Hubs support multiple TT (HS)
if (next_intf_desc->bInterfaceProtocol != USB_B_DEV_PROTOCOL_HUB_HS_NO_TT) {
ESP_LOGD(EXT_HUB_TAG, "Transaction Translator:");
ESP_LOGW(EXT_HUB_TAG, "Transaction Translator has not been implemented yet");
}
switch (next_intf_desc->bInterfaceProtocol) {
case USB_B_DEV_PROTOCOL_HUB_HS_NO_TT:
ESP_LOGD(EXT_HUB_TAG, "\tNo TT");
break;
case USB_B_DEV_PROTOCOL_HUB_HS_SINGLE_TT:
ESP_LOGD(EXT_HUB_TAG, "\tSingle TT");
break;
case USB_B_DEV_PROTOCOL_HUB_HS_MULTI_TT:
ESP_LOGD(EXT_HUB_TAG, "\tMulti TT");
break;
default:
ESP_LOGE(EXT_HUB_TAG, "\tInterface Protocol (%#x) not supported", next_intf_desc->bInterfaceProtocol);
goto next_iface;
}
#else
if (next_intf_desc->bInterfaceProtocol != USB_B_DEV_PROTOCOL_HUB_FS) {
ESP_LOGE(EXT_HUB_TAG, "\tProtocol (%#x) not supported", next_intf_desc->bInterfaceProtocol);
goto next_iface;
}
#endif // OTG_HSPHY_INTERFACE != 0
// Hub Interface always should have only one Interrupt endpoint
if (next_intf_desc->bNumEndpoints != 1) {
ESP_LOGE(EXT_HUB_TAG, "Unexpected number of endpoints (%d)", next_intf_desc->bNumEndpoints);
goto next_iface;
}
// Get related IN EP
ep_in_desc = usb_parse_endpoint_descriptor_by_index(next_intf_desc, 0, config_desc->wTotalLength, &offset);
if (ep_in_desc == NULL) {
ESP_LOGE(EXT_HUB_TAG, "EP descriptor not found (iface=%d)", next_intf_desc->bInterfaceNumber);
goto next_iface;
}
if (!USB_EP_DESC_GET_EP_DIR(ep_in_desc) ||
(USB_EP_DESC_GET_XFERTYPE(ep_in_desc) != USB_TRANSFER_TYPE_INTR)) {
ESP_LOGE(EXT_HUB_TAG, "Interrupt EP not found (iface=%d)", next_intf_desc->bInterfaceNumber);
goto next_iface;
}
// Interface found, fill the config
hub_config->iface_desc = next_intf_desc;
hub_config->ep_in_desc = ep_in_desc;
iface_found = true;
}
next_iface:
next_intf_desc = (const usb_intf_desc_t *)usb_parse_next_descriptor_of_type(
(const usb_standard_desc_t *)next_intf_desc,
config_desc->wTotalLength,
USB_B_DESCRIPTOR_TYPE_INTERFACE,
&offset);
}
return (iface_found) ? ESP_OK : ESP_ERR_NOT_FOUND;
}
esp_err_t ext_hub_new_dev(uint8_t dev_addr)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
ext_hub_dev_t *hub_dev = NULL;
usb_device_handle_t dev_hdl = NULL;
const usb_config_desc_t *config_desc = NULL;
bool call_proc_req_cb = false;
// Open device
ret = usbh_devs_open(dev_addr, &dev_hdl);
if (ret != ESP_OK) {
return ret;
}
// Get Configuration Descriptor
ret = usbh_dev_get_config_desc(dev_hdl, &config_desc);
if (ret != ESP_OK) {
goto exit;
}
// Find related Hub Interface descriptor
device_config_t hub_config = {
.dev_hdl = dev_hdl,
.dev_addr = dev_addr,
.iface_desc = NULL,
.ep_in_desc = NULL,
};
ret = find_first_intf_desc(config_desc, &hub_config);
if (ret != ESP_OK) {
goto exit;
}
// Create External Hub device
ret = device_alloc(&hub_config, &hub_dev);
if (ret != ESP_OK) {
goto exit;
}
EXT_HUB_ENTER_CRITICAL();
hub_dev->dynamic.stage = EXT_HUB_STAGE_GET_HUB_DESCRIPTOR;
call_proc_req_cb = _device_set_actions(hub_dev, DEV_ACTION_REQ);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
return ret;
exit:
ESP_ERROR_CHECK(usbh_dev_close(dev_hdl));
return ret;
}
esp_err_t ext_hub_dev_gone(uint8_t dev_addr)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
ext_hub_dev_t *ext_hub_dev = NULL;
bool call_proc_req_cb = false;
EXT_HUB_CHECK(dev_addr != 0, ESP_ERR_INVALID_ARG);
// Find device with dev_addr in the devices TAILQ
// TODO: IDF-10058
// Release all devices by dev_addr
ret = get_dev_by_addr(dev_addr, &ext_hub_dev);
if (ret != ESP_OK) {
ESP_LOGD(EXT_HUB_TAG, "No device with address %d was found", dev_addr);
return ret;
}
ESP_LOGE(EXT_HUB_TAG, "[%d] Device gone", ext_hub_dev->constant.dev_addr);
for (uint8_t i = 0; i < ext_hub_dev->constant.maxchild; i++) {
if (p_ext_hub_driver->constant.port_driver) {
p_ext_hub_driver->constant.port_driver->gone(ext_hub_dev->constant.ports[i]);
}
}
// Close the device
ESP_ERROR_CHECK(usbh_dev_close(ext_hub_dev->constant.dev_hdl));
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.flags.is_gone = 1;
call_proc_req_cb = _device_set_actions(ext_hub_dev, DEV_ACTION_GONE);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
return ret;
}
esp_err_t ext_hub_all_free(void)
{
ext_hub_dev_t *hub = NULL;
bool call_proc_req_cb = false;
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
TAILQ_FOREACH(hub, &p_ext_hub_driver->dynamic.ext_hubs_tailq, dynamic.tailq_entry) {
hub->dynamic.flags.waiting_free = 1;
_device_set_actions(hub, DEV_ACTION_RELEASE);
hub->dynamic.state = EXT_HUB_STATE_RELEASED;
call_proc_req_cb = true;
}
TAILQ_FOREACH(hub, &p_ext_hub_driver->dynamic.ext_hubs_pending_tailq, dynamic.tailq_entry) {
hub->dynamic.flags.waiting_free = 1;
hub->dynamic.state = EXT_HUB_STATE_RELEASED;
_device_set_actions(hub, DEV_ACTION_RELEASE);
call_proc_req_cb = true;
}
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
return ESP_OK;
}
esp_err_t ext_hub_status_handle_complete(ext_hub_handle_t ext_hub_hdl)
{
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
EXT_HUB_CHECK(ext_hub_dev->dynamic.state == EXT_HUB_STATE_CONFIGURED, ESP_ERR_INVALID_STATE);
ESP_LOGD(EXT_HUB_TAG, "[%d] Status handle complete, wait status change ...", ext_hub_hdl->constant.dev_addr);
return device_enable_int_ep(ext_hub_dev);
}
esp_err_t ext_hub_process(void)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
// Keep processing until all device's with pending events have been handled
while (!TAILQ_EMPTY(&p_ext_hub_driver->dynamic.ext_hubs_pending_tailq)) {
// Move the device back into the idle device list,
ext_hub_dev_t *ext_hub_dev = TAILQ_FIRST(&p_ext_hub_driver->dynamic.ext_hubs_pending_tailq);
TAILQ_REMOVE(&p_ext_hub_driver->dynamic.ext_hubs_pending_tailq, ext_hub_dev, dynamic.tailq_entry);
TAILQ_INSERT_TAIL(&p_ext_hub_driver->dynamic.ext_hubs_tailq, ext_hub_dev, dynamic.tailq_entry);
// Clear the device's flags
uint32_t action_flags = ext_hub_dev->dynamic.action_flags;
ext_hub_dev->dynamic.action_flags = 0;
ext_hub_dev->dynamic.flags.in_pending_list = 0;
/* ---------------------------------------------------------------------
Exit critical section to handle device action flags in their listed order
--------------------------------------------------------------------- */
EXT_HUB_EXIT_CRITICAL();
ESP_LOGD(EXT_HUB_TAG, "[%d] Processing actions 0x%"PRIx32"", ext_hub_dev->constant.dev_addr, action_flags);
if (action_flags & DEV_ACTION_REQ ||
action_flags & DEV_ACTION_EP0_COMPLETE) {
handle_device(ext_hub_dev);
}
if (action_flags & DEV_ACTION_EP1_FLUSH) {
handle_ep1_flush(ext_hub_dev);
}
if (action_flags & DEV_ACTION_EP1_DEQUEUE) {
handle_ep1_dequeue(ext_hub_dev);
}
if (action_flags & DEV_ACTION_EP1_CLEAR) {
handle_ep1_clear(ext_hub_dev);
}
if (action_flags & DEV_ACTION_ERROR) {
handle_error(ext_hub_dev);
}
if (action_flags & DEV_ACTION_GONE) {
handle_gone(ext_hub_dev);
}
if (action_flags & DEV_ACTION_RELEASE) {
device_release(ext_hub_dev);
}
if (action_flags & DEV_ACTION_FREE) {
device_free(ext_hub_dev);
}
EXT_HUB_ENTER_CRITICAL();
/* ---------------------------------------------------------------------
Re-enter critical sections. All device action flags should have been handled.
--------------------------------------------------------------------- */
}
EXT_HUB_EXIT_CRITICAL();
return ESP_OK;
}
// -----------------------------------------------------------------------------
// --------------------- External Hub - Device related -------------------------
// -----------------------------------------------------------------------------
esp_err_t ext_hub_get_hub_status(ext_hub_handle_t ext_hub_hdl)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.stage = EXT_HUB_STAGE_GET_HUB_STATUS;
bool call_proc_req_cb = _device_set_actions(ext_hub_dev, DEV_ACTION_REQ);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
return ESP_OK;
}
esp_err_t ext_hub_get_status(ext_hub_handle_t ext_hub_hdl)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.stage = EXT_HUB_STAGE_GET_DEVICE_STATUS;
bool call_proc_req_cb = _device_set_actions(ext_hub_dev, DEV_ACTION_REQ);
EXT_HUB_EXIT_CRITICAL();
if (call_proc_req_cb) {
p_ext_hub_driver->constant.proc_req_cb(false, p_ext_hub_driver->constant.proc_req_cb_arg);
}
return ESP_OK;
}
// -----------------------------------------------------------------------------
// --------------------- External Hub - Port related ---------------------------
// -----------------------------------------------------------------------------
esp_err_t ext_hub_port_recycle(ext_hub_handle_t ext_hub_hdl, uint8_t port_num)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
uint8_t port_idx = port_num - 1;
EXT_HUB_CHECK(port_idx < ext_hub_dev->constant.maxchild, ESP_ERR_INVALID_SIZE);
if (p_ext_hub_driver->constant.port_driver) {
ret = p_ext_hub_driver->constant.port_driver->recycle(ext_hub_dev->constant.ports[port_idx]);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
return ret;
}
esp_err_t ext_hub_port_reset(ext_hub_handle_t ext_hub_hdl, uint8_t port_num)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
uint8_t port_idx = port_num - 1;
EXT_HUB_CHECK(port_idx < ext_hub_dev->constant.maxchild, ESP_ERR_INVALID_SIZE);
if (p_ext_hub_driver->constant.port_driver) {
ret = p_ext_hub_driver->constant.port_driver->reset(ext_hub_dev->constant.ports[port_idx]);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
return ret;
}
esp_err_t ext_hub_port_active(ext_hub_handle_t ext_hub_hdl, uint8_t port_num)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
uint8_t port_idx = port_num - 1;
EXT_HUB_CHECK(port_idx < ext_hub_dev->constant.maxchild, ESP_ERR_INVALID_SIZE);
if (p_ext_hub_driver->constant.port_driver) {
ret = p_ext_hub_driver->constant.port_driver->active(ext_hub_dev->constant.ports[port_idx]);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
return ret;
}
esp_err_t ext_hub_port_disable(ext_hub_handle_t ext_hub_hdl, uint8_t port_num)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
uint8_t port_idx = port_num - 1;
EXT_HUB_CHECK(port_idx < ext_hub_dev->constant.maxchild, ESP_ERR_INVALID_SIZE);
if (p_ext_hub_driver->constant.port_driver) {
ret = p_ext_hub_driver->constant.port_driver->disable(ext_hub_dev->constant.ports[port_idx]);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
return ret;
}
esp_err_t ext_hub_port_get_speed(ext_hub_handle_t ext_hub_hdl, uint8_t port_num, usb_speed_t *speed)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
uint8_t port_idx = port_num - 1;
EXT_HUB_CHECK(port_idx < ext_hub_dev->constant.maxchild, ESP_ERR_INVALID_SIZE);
if (p_ext_hub_driver->constant.port_driver) {
ret = p_ext_hub_driver->constant.port_driver->get_speed(ext_hub_dev->constant.ports[port_idx], speed);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
return ret;
}
// -----------------------------------------------------------------------------
// --------------------------- USB Chapter 11 ----------------------------------
// -----------------------------------------------------------------------------
esp_err_t ext_hub_set_port_feature(ext_hub_handle_t ext_hub_hdl, uint8_t port_num, uint8_t feature)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
usb_transfer_t *transfer = &ext_hub_dev->constant.ctrl_urb->transfer;
EXT_HUB_CHECK(port_num != 0 && port_num <= ext_hub_dev->constant.maxchild, ESP_ERR_INVALID_SIZE);
USB_SETUP_PACKET_INIT_SET_PORT_FEATURE((usb_setup_packet_t *)transfer->data_buffer, port_num, feature);
transfer->num_bytes = sizeof(usb_setup_packet_t);
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.stage = EXT_HUB_STAGE_PORT_FEATURE;
EXT_HUB_EXIT_CRITICAL();
ret = usbh_dev_submit_ctrl_urb(ext_hub_dev->constant.dev_hdl, ext_hub_dev->constant.ctrl_urb);
if (ret != ESP_OK) {
ESP_LOGE(EXT_HUB_TAG, "Failed to submit ctrl urb, error %#x", ret);
}
return ret;
}
esp_err_t ext_hub_clear_port_feature(ext_hub_handle_t ext_hub_hdl, uint8_t port_num, uint8_t feature)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
usb_transfer_t *transfer = &ext_hub_dev->constant.ctrl_urb->transfer;
EXT_HUB_CHECK(port_num != 0 && port_num <= ext_hub_dev->constant.maxchild, ESP_ERR_INVALID_SIZE);
USB_SETUP_PACKET_INIT_CLEAR_PORT_FEATURE((usb_setup_packet_t *)transfer->data_buffer, port_num, feature);
transfer->num_bytes = sizeof(usb_setup_packet_t);
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.stage = EXT_HUB_STAGE_PORT_FEATURE;
EXT_HUB_EXIT_CRITICAL();
ret = usbh_dev_submit_ctrl_urb(ext_hub_dev->constant.dev_hdl, ext_hub_dev->constant.ctrl_urb);
if (ret != ESP_OK) {
ESP_LOGE(EXT_HUB_TAG, "Failed to submit ctrl urb, error %#x", ret);
}
return ret;
}
esp_err_t ext_hub_get_port_status(ext_hub_handle_t ext_hub_hdl, uint8_t port_num)
{
EXT_HUB_ENTER_CRITICAL();
EXT_HUB_CHECK_FROM_CRIT(p_ext_hub_driver != NULL, ESP_ERR_INVALID_STATE);
EXT_HUB_EXIT_CRITICAL();
esp_err_t ret;
EXT_HUB_CHECK(ext_hub_hdl != NULL, ESP_ERR_INVALID_ARG);
ext_hub_dev_t *ext_hub_dev = (ext_hub_dev_t *)ext_hub_hdl;
usb_transfer_t *transfer = &ext_hub_dev->constant.ctrl_urb->transfer;
EXT_HUB_CHECK(port_num != 0 && port_num <= ext_hub_dev->constant.maxchild, ESP_ERR_INVALID_SIZE);
USB_SETUP_PACKET_INIT_GET_PORT_STATUS((usb_setup_packet_t *)transfer->data_buffer, port_num);
transfer->num_bytes = sizeof(usb_setup_packet_t) + sizeof(usb_port_status_t);
EXT_HUB_ENTER_CRITICAL();
ext_hub_dev->dynamic.stage = EXT_HUB_STAGE_PORT_STATUS_REQUEST;
EXT_HUB_EXIT_CRITICAL();
ret = usbh_dev_submit_ctrl_urb(ext_hub_dev->constant.dev_hdl, ext_hub_dev->constant.ctrl_urb);
if (ret != ESP_OK) {
ESP_LOGE(EXT_HUB_TAG, "Failed to submit ctrl urb, error %#x", ret);
}
return ret;
}
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