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refactor(usb/hub): Update Hub driver port request logic

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This commit is contained in:
Darian Leung 2024-04-16 01:51:30 +08:00 committed by BOT
parent 3358f3ec46
commit df6c6f93fa
1 changed files with 51 additions and 28 deletions
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79
components/usb/hub.c
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@ -50,9 +50,12 @@ implement the bare minimum to control the root HCD port.
// Hub driver action flags. LISTED IN THE ORDER THEY SHOULD BE HANDLED IN within hub_process(). Some actions are mutually exclusive
#define HUB_DRIVER_FLAG_ACTION_ROOT_EVENT 0x01
#define HUB_DRIVER_FLAG_ACTION_PORT 0x02
#define HUB_DRIVER_FLAG_ACTION_PORT_REQ 0x02
#define HUB_DRIVER_FLAG_ACTION_ENUM_EVENT 0x04
#define PORT_REQ_DISABLE 0x01
#define PORT_REQ_RECOVER 0x02
/**
* @brief Root port states
*
@ -185,6 +188,7 @@ typedef struct {
uint32_t val;
} flags;
root_port_state_t root_port_state;
unsigned int port_reqs;
} dynamic;
// Single thread members don't require a critical section so long as they are never accessed from multiple threads
struct {
@ -679,7 +683,8 @@ static void enum_stage_cleanup_failed(enum_ctrl_t *enum_ctrl)
HUB_DRIVER_ENTER_CRITICAL();
// Enum could have failed due to a port error. If so, we need to trigger a port recovery
if (p_hub_driver_obj->dynamic.root_port_state == ROOT_PORT_STATE_RECOVERY) {
p_hub_driver_obj->dynamic.flags.actions |= HUB_DRIVER_FLAG_ACTION_PORT;
p_hub_driver_obj->dynamic.port_reqs |= PORT_REQ_RECOVER;
p_hub_driver_obj->dynamic.flags.actions |= HUB_DRIVER_FLAG_ACTION_PORT_REQ;
} else {
// Otherwise, we move to the enum failed state and wait for the device to disconnect
p_hub_driver_obj->dynamic.root_port_state = ROOT_PORT_STATE_ENUM_FAILED;
@ -839,7 +844,8 @@ static void root_port_handle_events(hcd_port_handle_t root_port_hdl)
case ROOT_PORT_STATE_POWERED: // This occurred before enumeration
case ROOT_PORT_STATE_ENUM_FAILED: // This occurred after a failed enumeration.
// Therefore, there's no device and we can go straight to port recovery
p_hub_driver_obj->dynamic.flags.actions |= HUB_DRIVER_FLAG_ACTION_PORT;
p_hub_driver_obj->dynamic.port_reqs |= PORT_REQ_RECOVER;
p_hub_driver_obj->dynamic.flags.actions |= HUB_DRIVER_FLAG_ACTION_PORT_REQ;
break;
case ROOT_PORT_STATE_ENUM:
// This occurred during enumeration. Therefore, we need to cleanup the failed enumeration
@ -867,6 +873,30 @@ static void root_port_handle_events(hcd_port_handle_t root_port_hdl)
}
}
static void root_port_req(hcd_port_handle_t root_port_hdl)
{
unsigned int port_reqs;
HUB_DRIVER_ENTER_CRITICAL();
port_reqs = p_hub_driver_obj->dynamic.port_reqs;
p_hub_driver_obj->dynamic.port_reqs = 0;
HUB_DRIVER_EXIT_CRITICAL();
if (port_reqs & PORT_REQ_DISABLE) {
ESP_LOGD(HUB_DRIVER_TAG, "Disabling root port");
// We allow this to fail in case a disconnect/port error happens while disabling.
hcd_port_command(p_hub_driver_obj->constant.root_port_hdl, HCD_PORT_CMD_DISABLE);
}
if (port_reqs & PORT_REQ_RECOVER) {
ESP_LOGD(HUB_DRIVER_TAG, "Recovering root port");
ESP_ERROR_CHECK(hcd_port_recover(p_hub_driver_obj->constant.root_port_hdl));
ESP_ERROR_CHECK(hcd_port_command(p_hub_driver_obj->constant.root_port_hdl, HCD_PORT_CMD_POWER_ON));
HUB_DRIVER_ENTER_CRITICAL();
p_hub_driver_obj->dynamic.root_port_state = ROOT_PORT_STATE_POWERED;
HUB_DRIVER_EXIT_CRITICAL();
}
}
static void enum_handle_events(void)
{
bool stage_pass;
@ -1055,10 +1085,24 @@ esp_err_t hub_dev_is_free(uint8_t dev_addr)
{
assert(dev_addr == ENUM_DEV_ADDR);
assert(p_hub_driver_obj->single_thread.root_dev_hdl);
p_hub_driver_obj->single_thread.root_dev_hdl = NULL;
// Device is free, we can now request its port be recycled
hcd_port_state_t port_state = hcd_port_get_state(p_hub_driver_obj->constant.root_port_hdl);
p_hub_driver_obj->single_thread.root_dev_hdl = NULL;
HUB_DRIVER_ENTER_CRITICAL();
p_hub_driver_obj->dynamic.flags.actions |= HUB_DRIVER_FLAG_ACTION_PORT;
// How the port is recycled will depend on the port's state
switch (port_state) {
case HCD_PORT_STATE_ENABLED:
p_hub_driver_obj->dynamic.port_reqs |= PORT_REQ_DISABLE;
break;
case HCD_PORT_STATE_RECOVERY:
p_hub_driver_obj->dynamic.port_reqs |= PORT_REQ_RECOVER;
break;
default:
abort(); // Should never occur
break;
}
p_hub_driver_obj->dynamic.flags.actions |= HUB_DRIVER_FLAG_ACTION_PORT_REQ;
HUB_DRIVER_EXIT_CRITICAL();
p_hub_driver_obj->constant.proc_req_cb(USB_PROC_REQ_SOURCE_HUB, false, p_hub_driver_obj->constant.proc_req_cb_arg);
@ -1076,29 +1120,8 @@ esp_err_t hub_process(void)
if (action_flags & HUB_DRIVER_FLAG_ACTION_ROOT_EVENT) {
root_port_handle_events(p_hub_driver_obj->constant.root_port_hdl);
}
if (action_flags & HUB_DRIVER_FLAG_ACTION_PORT) {
// Check current state of port
hcd_port_state_t port_state = hcd_port_get_state(p_hub_driver_obj->constant.root_port_hdl);
switch (port_state) {
case HCD_PORT_STATE_ENABLED:
// Port is still enabled with a connect device. Disable it.
ESP_LOGD(HUB_DRIVER_TAG, "Disabling root port");
// We allow this to fail in case a disconnect/port error happens while disabling.
hcd_port_command(p_hub_driver_obj->constant.root_port_hdl, HCD_PORT_CMD_DISABLE);
break;
case HCD_PORT_STATE_RECOVERY:
// Port is in recovery after a disconnect/error. Recover it.
ESP_LOGD(HUB_DRIVER_TAG, "Recovering root port");
ESP_ERROR_CHECK(hcd_port_recover(p_hub_driver_obj->constant.root_port_hdl));
ESP_ERROR_CHECK(hcd_port_command(p_hub_driver_obj->constant.root_port_hdl, HCD_PORT_CMD_POWER_ON));
HUB_DRIVER_ENTER_CRITICAL();
p_hub_driver_obj->dynamic.root_port_state = ROOT_PORT_STATE_POWERED;
HUB_DRIVER_EXIT_CRITICAL();
break;
default:
abort(); // Should never occur
break;
}
if (action_flags & HUB_DRIVER_FLAG_ACTION_PORT_REQ) {
root_port_req(p_hub_driver_obj->constant.root_port_hdl);
}
if (action_flags & HUB_DRIVER_FLAG_ACTION_ENUM_EVENT) {
enum_handle_events();