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Merge pull request #15734 from bergzand/pr/usbus/atomic_utils

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usbus: Use atomic_utils for endpoint flag operations
This commit is contained in:
Marian Buschsieweke 2021-01-11 13:11:32 +01:00 committed by GitHub
commit 02552dbaeb
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1 changed files with 9 additions and 18 deletions
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27
sys/usb/usbus/usbus.c
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@ -18,6 +18,7 @@
#define USB_H_USER_IS_RIOT_INTERNAL
#include "atomic_utils.h"
#include "kernel_defines.h"
#include "bitarithm.h"
#include "event.h"
@ -175,36 +176,26 @@ usbus_endpoint_t *usbus_add_endpoint(usbus_t *usbus, usbus_interface_t *iface,
return ep;
}
static inline uint32_t _get_ep_bitflag(usbdev_ep_t *ep)
static inline uint8_t _get_ep_bitnum(usbdev_ep_t *ep)
{
/* Endpoint activity bit flag, lower USBDEV_NUM_ENDPOINTS bits are
* useb as OUT endpoint flags, upper bit are IN endpoints */
return 1 << ((ep->dir == USB_EP_DIR_IN ? USBDEV_NUM_ENDPOINTS
: 0x00) + ep->num);
return (ep->dir == USB_EP_DIR_IN ? USBDEV_NUM_ENDPOINTS
: 0x00) + ep->num;
}
static void _set_ep_event(usbus_t *usbus, usbdev_ep_t *ep)
{
if (irq_is_in()) {
usbus->ep_events |= _get_ep_bitflag(ep);
}
else {
unsigned state = irq_disable();
usbus->ep_events |= _get_ep_bitflag(ep);
irq_restore(state);
}
atomic_bit_u32_t bitflag = atomic_bit_u32(&usbus->ep_events,
_get_ep_bitnum(ep));
atomic_set_bit_u32(bitflag);
thread_flags_set(thread_get(usbus->pid), USBUS_THREAD_FLAG_USBDEV_EP);
}
static uint32_t _get_and_reset_ep_events(usbus_t *usbus)
static inline uint32_t _get_and_reset_ep_events(usbus_t *usbus)
{
unsigned state = irq_disable();
uint32_t res = usbus->ep_events;
usbus->ep_events = 0;
irq_restore(state);
return res;
return atomic_fetch_and_u32(&usbus->ep_events, 0);
}
static void _signal_handlers(usbus_t *usbus, uint16_t flag,