sam3 system clock setting: optimize run-time evaluation to prefer greater

[bertos.git] / bertos / cpu / cortex-m3 / drv / usb_stm32.c

diff --git a/bertos/cpu/cortex-m3/drv/usb_stm32.c b/bertos/cpu/cortex-m3/drv/usb_stm32.c
index 879b2d6f0a828bd5724fe8dd6839e9c6fbc2cf35..46069ff0bec281321b7d951d50f731648c4ea4d5 100644 (file)
--- a/bertos/cpu/cortex-m3/drv/usb_stm32.c
+++ b/bertos/cpu/cortex-m3/drv/usb_stm32.c
@@ -117,7 +117,7 @@ static const UsbEndpointDesc USB_CtrlEpDescr1 =
 static UsbCtrlRequest setup_packet;
 
 /* USB device controller: max supported interfaces */
-#define USB_MAX_INTERFACE      1
+#define USB_MAX_INTERFACE      CONFIG_USB_INTERFACE_MAX
 
 /* USB device controller features */
 #define STM32_UDC_FEATURE_SELFPOWERED  BV(0)
@@ -148,18 +148,18 @@ static stm32_UsbMemSlot *mem_use;
 static stm32_UsbMemSlot memory_buffer[EP_MAX_NUM];
 
 /* Endpoint TX and RX buffers */
-/// \cond
-/* XXX: use the empty cond section to silent a buggy doxygen warning */
 static size_t rx_size, tx_size;
 
 #define EP_BUFFER_SIZE _MIN(CONFIG_USB_BUFSIZE, USB_XFER_MAX_SIZE)
 STATIC_ASSERT(!(EP_BUFFER_SIZE & 0x03));
 
 static uint8_t ep_buffer[EP_MAX_NUM][EP_BUFFER_SIZE] ALIGNED(4);
-/// \endcond
 
 static Event usb_event_done[EP_MAX_SLOTS];
 
+/* Check if we're running in atomic (non-sleepable) context or not */
+static volatile bool in_atomic = false;
+
 /* Allocate a free block of the packet memory */
 static stm32_UsbMemSlot *usb_malloc(void)
 {
@@ -814,22 +814,27 @@ static int usb_ep_configure(const UsbEndpointDesc *epd, bool enable)
                switch (ep_hw->type)
                {
                case USB_ENDPOINT_XFER_CONTROL:
-                       LOG_INFO("EP%d: CONTROL IN\n", EP >> 1);
+                       LOG_INFO("EP%d: CONTROL %s\n", EP >> 1,
+                                       EP & 1 ? "IN" : "OUT");
                        ep_ctrl_set_ep_type(hw, EP_CTRL);
                        ep_ctrl_set_ep_kind(hw, 0);
                        break;
                case USB_ENDPOINT_XFER_INT:
-                       LOG_INFO("EP%d: INTERRUPT IN\n", EP >> 1);
+                       LOG_INFO("EP%d: INTERRUPT %s\n", EP >> 1,
+                                       EP & 1 ? "IN" : "OUT");
                        ep_ctrl_set_ep_type(hw, EP_INTERRUPT);
                        ep_ctrl_set_ep_kind(hw, 0);
                        break;
                case USB_ENDPOINT_XFER_BULK:
-                       LOG_INFO("EP%d: BULK IN\n", EP >> 1);
+                       LOG_INFO("EP%d: BULK %s\n", EP >> 1,
+                                       EP & 1 ? "IN" : "OUT");
                        ep_ctrl_set_ep_type(hw, EP_BULK);
                        ep_ctrl_set_ep_kind(hw, 0);
                        break;
                case USB_ENDPOINT_XFER_ISOC:
-                       LOG_ERR("EP%d: ISOCHRONOUS IN: not supported\n", EP >> 1);
+                       LOG_ERR("EP%d: ISOCHRONOUS %s: not supported\n",
+                                       EP >> 1,
+                                       EP & 1 ? "IN" : "OUT");
                        /* Fallback to default */
                default:
                        ASSERT(0);
@@ -1124,7 +1129,7 @@ ssize_t usb_endpointRead(int ep, void *buffer, ssize_t size)
        ssize_t max_size = sizeof(ep_buffer[ep_num]);
 
        /* Non-blocking read for EP0 */
-       if (ep_num == CTRL_ENP_OUT)
+       if (in_atomic && (ep_num == CTRL_ENP_OUT))
        {
                size = usb_size(size, usb_le16_to_cpu(setup_packet.wLength));
                if (UNLIKELY(size > max_size))
@@ -1178,7 +1183,7 @@ ssize_t usb_endpointWrite(int ep, const void *buffer, ssize_t size)
        ssize_t max_size = sizeof(ep_buffer[ep_num]);
 
        /* Non-blocking write for EP0 */
-       if (ep_num == CTRL_ENP_IN)
+       if (in_atomic && (ep_num == CTRL_ENP_IN))
        {
                size = usb_size(size, usb_le16_to_cpu(setup_packet.wLength));
                if (UNLIKELY(size > max_size))
@@ -1490,11 +1495,8 @@ static void usb_get_descriptor_handler(void)
        if ((setup_packet.mRequestType & USB_RECIP_MASK) ==
                        USB_RECIP_DEVICE)
                usb_get_descriptor();
-       /* Getting descriptor for a device is a standard request */
-       else if ((setup_packet.mRequestType & USB_DIR_MASK) == USB_DIR_IN)
-               usb_event_handler(usb_dev);
        else
-               ep_cnfg[CTRL_ENP_OUT].status = STALLED;
+               usb_event_handler(usb_dev);
 }
 
 /* USB setup packet: SET_ADDRESS handler */
@@ -1804,6 +1806,9 @@ static void usb_isr(void)
        interrupt.status = usb->ISTR;
        interrupt.status &= usb->CNTR | 0x1f;
 
+       /* Set the context as atomic */
+       in_atomic = true;
+
        if (interrupt.PMAOVR)
        {
                LOG_WARN("%s: DMA overrun / underrun\n", __func__);
@@ -1853,6 +1858,7 @@ static void usb_isr(void)
        {
                usb_isr_correct_transfer(interrupt);
        }
+       in_atomic = false;
 }
 
 /* USB: hardware initialization */