mirror of
https://github.com/dougg3/mac-rom-simm-programmer.git
synced 2024-12-12 14:31:15 +00:00
5fc45624ef
This is important for the bootloader. There's a bunch of stuff here we don't need that unnecessarily bloats the code.
694 lines
20 KiB
C
694 lines
20 KiB
C
/**************************************************************************//**
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* @file usbd.c
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* @version V0.10
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* @brief M251 series USBD driver source file
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*
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* SPDX-License-Identifier: Apache-2.0
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* @copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#include <string.h>
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#include "NuMicro.h"
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#if 0
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#define DBG_PRINTF printf
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#else
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#define DBG_PRINTF(...)
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/** @addtogroup Standard_Driver Standard Driver
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@{
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*/
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/** @addtogroup USBD_Driver USBD Driver
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@{
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*/
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/** @addtogroup USBD_EXPORTED_FUNCTIONS USBD Exported Functions
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@{
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*/
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/* Global variables for Control Pipe */
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uint8_t g_USBD_au8SetupPacket[8] = {0u}; /*!< Setup packet buffer */
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volatile uint8_t g_USBD_u8RemoteWakeupEn = 0u; /*!< Remote wake up function enable flag */
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/**
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* @cond HIDDEN_SYMBOLS
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*/
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static volatile uint8_t *s_USBD_pu8CtrlInPointer = 0ul;
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static volatile uint8_t *s_USBD_pu8CtrlOutPointer = 0ul;
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static volatile uint32_t s_USBD_u32CtrlInSize = 0ul;
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static volatile uint32_t s_USBD_u32CtrlOutSize = 0ul;
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static volatile uint32_t s_USBD_u32CtrlOutSizeLimit = 0ul;
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static volatile uint32_t s_USBD_u32UsbAddr = 0ul;
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static volatile uint32_t s_USBD_u32UsbConfig = 0ul;
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static volatile uint32_t s_USBD_u32CtrlMaxPktSize = 8ul;
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static volatile uint32_t s_USBD_u32UsbAltInterface = 0ul;
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static volatile uint8_t s_USBD_u8CtrlInZeroFlag = 0ul;
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static volatile uint32_t s_USBD_u32CtrlOutToggle = 0ul;
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/**
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* @endcond
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*/
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const S_USBD_INFO_T *g_USBD_sINFO; /*!< A pointer for USB information structure */
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CLASS_REQ g_USBD_pfnClassRequest = NULL; /*!< USB Class Request Functional Pointer */
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uint32_t g_USBD_u32EpStallLock = 0ul; /*!< Bit map flag to lock specified EP when SET_FEATURE */
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/**
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* @brief This function makes USBD module to be ready to use
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*
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* @param[in] param The structure of USBD information.
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* @param[in] pfnClassReq USB Class request callback function.
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*
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*
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* @details This function will enable USB controller, USB PHY transceiver and pull-up resistor of USB_D+ pin. USB PHY will drive SE0 to bus.
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*/
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void USBD_Open(const S_USBD_INFO_T *param, CLASS_REQ pfnClassReq)
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{
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g_USBD_sINFO = param;
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g_USBD_pfnClassRequest = pfnClassReq;
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/* get EP0 maximum packet size */
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s_USBD_u32CtrlMaxPktSize = g_USBD_sINFO->gu8DevDesc[7];
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/* Initial USB engine */
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#ifdef SUPPORT_LPM
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USBD->ATTR = 0x7D0UL | USBD_LPMACK;
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#else
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USBD->ATTR = 0x7D0UL;
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#endif
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/* Force SE0 */
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USBD_SET_SE0();
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}
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/**
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* @brief This function makes USB host to recognize the device
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*
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*
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*
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* @details Enable WAKEUP, FLDET, USB and BUS interrupts. Disable software-disconnect function after 100ms delay with SysTick timer.
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*/
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void USBD_Start(void)
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{
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/* Disable software-disconnect function */
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USBD_CLR_SE0();
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/* Clear USB-related interrupts before enable interrupt */
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USBD_CLR_INT_FLAG(USBD_INT_BUS | USBD_INT_USB | USBD_INT_FLDET | USBD_INT_WAKEUP);
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/* Enable USB-related interrupts. */
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USBD_ENABLE_INT(USBD_INT_BUS | USBD_INT_USB | USBD_INT_FLDET | USBD_INT_WAKEUP);
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}
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/**
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* @brief Get the received SETUP packet
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*
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* @param[in] buf A buffer pointer used to store 8-byte SETUP packet.
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*
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*
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* @details Store SETUP packet to a user-specified buffer.
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*
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*/
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void USBD_GetSetupPacket(uint8_t *buf)
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{
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USBD_MemCopy(buf, g_USBD_au8SetupPacket, 8ul);
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}
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/**
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* @brief Process SETUP packet
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*
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*
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*
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* @details Parse SETUP packet and perform the corresponding action.
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*
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*/
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void USBD_ProcessSetupPacket(void)
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{
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s_USBD_u32CtrlOutToggle = 0;
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/* Get SETUP packet from USB buffer */
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USBD_MemCopy(g_USBD_au8SetupPacket, (uint8_t *)USBD_BUF_BASE, 8ul);
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/* Check the request type */
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switch (g_USBD_au8SetupPacket[0] & 0x60ul)
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{
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case REQ_STANDARD: /* Standard */
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{
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USBD_StandardRequest();
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break;
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}
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case REQ_CLASS: /* Class */
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{
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if (g_USBD_pfnClassRequest != NULL)
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{
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g_USBD_pfnClassRequest();
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}
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break;
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}
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default: /* reserved */
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{
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/* Setup error, stall the device */
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USBD_SET_EP_STALL(EP0);
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USBD_SET_EP_STALL(EP1);
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break;
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}
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}
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}
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/**
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* @brief Process GetDescriptor request
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*
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*
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*
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* @details Parse GetDescriptor request and perform the corresponding action.
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*
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*/
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void USBD_GetDescriptor(void)
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{
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uint32_t u32Len;
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s_USBD_u8CtrlInZeroFlag = (uint8_t)0ul;
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u32Len = 0ul;
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u32Len = g_USBD_au8SetupPacket[7];
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u32Len <<= 8ul;
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u32Len += g_USBD_au8SetupPacket[6];
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switch (g_USBD_au8SetupPacket[3])
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{
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/* Get Device Descriptor */
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case DESC_DEVICE:
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{
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u32Len = USBD_Minimum(u32Len, LEN_DEVICE);
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DBG_PRINTF("Get device desc, %d\n", u32Len);
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USBD_PrepareCtrlIn((uint8_t *)g_USBD_sINFO->gu8DevDesc, u32Len);
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break;
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}
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/* Get Configuration Descriptor */
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case DESC_CONFIG:
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{
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uint32_t u32TotalLen;
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DBG_PRINTF("Get config desc len %d, acture len %d\n", u32Len, u32TotalLen);
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u32TotalLen = g_USBD_sINFO->gu8ConfigDesc[3];
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u32TotalLen = g_USBD_sINFO->gu8ConfigDesc[2] + (u32TotalLen << 8U);
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DBG_PRINTF("Get config desc len %d, acture len %d\n", u32Len, u32TotalLen);
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if (u32Len > u32TotalLen)
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{
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u32Len = u32TotalLen;
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if ((u32Len % s_USBD_u32CtrlMaxPktSize) == 0ul)
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{
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s_USBD_u8CtrlInZeroFlag = (uint8_t)1ul;
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}
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}
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DBG_PRINTF("Minimum len %d\n", u32Len);
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USBD_PrepareCtrlIn((uint8_t *)g_USBD_sINFO->gu8ConfigDesc, u32Len);
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break;
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}
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/* Get String Descriptor */
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case DESC_STRING:
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{
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/* Get String Descriptor */
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if (g_USBD_au8SetupPacket[2] < 4ul)
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{
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if (u32Len > g_USBD_sINFO->gu8StringDesc[g_USBD_au8SetupPacket[2]][0])
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{
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u32Len = g_USBD_sINFO->gu8StringDesc[g_USBD_au8SetupPacket[2]][0];
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if ((u32Len % s_USBD_u32CtrlMaxPktSize) == 0ul)
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{
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s_USBD_u8CtrlInZeroFlag = (uint8_t)1ul;
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}
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}
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DBG_PRINTF("Get string desc %d\n", u32Len);
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USBD_PrepareCtrlIn((uint8_t *)g_USBD_sINFO->gu8StringDesc[g_USBD_au8SetupPacket[2]], u32Len);
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break;
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}
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else
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{
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/* Not support. Reply STALL. */
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USBD_SET_EP_STALL(EP0);
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USBD_SET_EP_STALL(EP1);
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DBG_PRINTF("Unsupported string desc (%d). Stall ctrl pipe.\n", g_USBD_au8SetupPacket[2]);
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break;
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}
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}
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default:
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/* Not support. Reply STALL. */
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USBD_SET_EP_STALL(EP0);
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USBD_SET_EP_STALL(EP1);
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DBG_PRINTF("Unsupported get desc type. stall ctrl pipe\n");
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break;
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}
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}
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/**
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* @brief Process standard request
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*
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*
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*
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* @details Parse standard request and perform the corresponding action.
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*
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*/
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void USBD_StandardRequest(void)
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{
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DBG_PRINTF("USBD_StandardRequest\n");
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/* clear global variables for new request */
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s_USBD_pu8CtrlInPointer = 0ul;
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s_USBD_u32CtrlInSize = 0ul;
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if (g_USBD_au8SetupPacket[0] & 0x80ul) /* request data transfer direction */
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{
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/* Device to host */
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switch (g_USBD_au8SetupPacket[1])
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{
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case GET_CONFIGURATION:
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{
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/* Return current configuration setting */
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/* Data stage */
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M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = (uint8_t)s_USBD_u32UsbConfig;
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USBD_SET_DATA1(EP0);
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USBD_SET_PAYLOAD_LEN(EP0, 1ul);
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/* Status stage */
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USBD_PrepareCtrlOut(0, 0ul);
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DBG_PRINTF("Get configuration\n");
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break;
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}
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case GET_DESCRIPTOR:
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{
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USBD_GetDescriptor();
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USBD_PrepareCtrlOut(0, 0ul); /* For status stage */
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break;
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}
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case GET_INTERFACE:
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{
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/* Return current interface setting */
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/* Data stage */
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M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = (uint8_t)s_USBD_u32UsbAltInterface;
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USBD_SET_DATA1(EP0);
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USBD_SET_PAYLOAD_LEN(EP0, 1ul);
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/* Status stage */
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USBD_PrepareCtrlOut(0, 0ul);
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DBG_PRINTF("Get interface\n");
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break;
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}
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case GET_STATUS:
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{
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/* Device */
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if (g_USBD_au8SetupPacket[0] == 0x80ul)
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{
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uint8_t u8Tmp;
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u8Tmp = (uint8_t)0ul;
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if (g_USBD_sINFO->gu8ConfigDesc[7] & 0x40ul) u8Tmp |= (uint8_t)1ul; /* Self-Powered/Bus-Powered. */
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if (g_USBD_sINFO->gu8ConfigDesc[7] & 0x20) u8Tmp |= (uint8_t)(g_USBD_u8RemoteWakeupEn << 1ul); /* Remote wake up */
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M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = u8Tmp;
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}
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/* Interface */
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else if (g_USBD_au8SetupPacket[0] == 0x81ul)
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M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = (uint8_t)0ul;
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/* Endpoint */
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else if (g_USBD_au8SetupPacket[0] == 0x82ul)
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{
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uint8_t ep = (uint8_t)g_USBD_au8SetupPacket[4] & 0xFul;
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M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0)) = (uint8_t)(USBD_GetStall(ep) ? 1ul : 0ul);
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}
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M8(USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0) + 1) = (uint8_t)0ul;
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/* Data stage */
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USBD_SET_DATA1(EP0);
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USBD_SET_PAYLOAD_LEN(EP0, 2ul);
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/* Status stage */
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USBD_PrepareCtrlOut(0, 0ul);
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DBG_PRINTF("Get status\n");
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break;
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}
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default:
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{
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/* Setup error, stall the device */
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USBD_SET_EP_STALL(EP0);
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USBD_SET_EP_STALL(EP1);
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DBG_PRINTF("Unknown request. stall ctrl pipe.\n");
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break;
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}
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}
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}
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else
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{
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/* Host to device */
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switch (g_USBD_au8SetupPacket[1])
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{
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case CLEAR_FEATURE:
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{
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if (g_USBD_au8SetupPacket[2] == FEATURE_ENDPOINT_HALT)
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{
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uint32_t epNum, i;
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/* EP number stall is not allow to be clear in MSC class "Error Recovery Test".
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a flag: g_USBD_u32EpStallLock is added to support it */
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epNum = (uint8_t)(g_USBD_au8SetupPacket[4] & 0xFul);
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for (i = 0ul; i < USBD_MAX_EP; i++)
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{
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if (((USBD->EP[i].CFG & 0xFul) == epNum) && ((g_USBD_u32EpStallLock & (1ul << i)) == 0ul))
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{
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USBD->EP[i].CFGP &= ~USBD_CFGP_SSTALL_Msk;
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USBD->EP[i].CFG &= ~USBD_CFG_DSQSYNC_Msk;
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DBG_PRINTF("Clr stall ep%d %x\n", i, USBD->EP[i].CFGP);
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}
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}
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}
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else if (g_USBD_au8SetupPacket[2] == FEATURE_DEVICE_REMOTE_WAKEUP)
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g_USBD_u8RemoteWakeupEn = (uint8_t)0;
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/* Status stage */
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USBD_SET_DATA1(EP0);
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USBD_SET_PAYLOAD_LEN(EP0, 0ul);
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DBG_PRINTF("Clear feature op %d\n", g_USBD_au8SetupPacket[2]);
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break;
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}
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case SET_ADDRESS:
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{
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s_USBD_u32UsbAddr = g_USBD_au8SetupPacket[2];
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DBG_PRINTF("Set addr to %d\n", s_USBD_u32UsbAddr);
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/* DATA IN for end of setup */
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/* Status Stage */
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USBD_SET_DATA1(EP0);
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USBD_SET_PAYLOAD_LEN(EP0, 0ul);
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break;
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}
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case SET_CONFIGURATION:
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{
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s_USBD_u32UsbConfig = g_USBD_au8SetupPacket[2];
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/* Status stage */
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USBD_SET_DATA1(EP0);
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USBD_SET_PAYLOAD_LEN(EP0, 0ul);
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DBG_PRINTF("Set config to %d\n", s_USBD_u32UsbConfig);
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break;
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}
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case SET_FEATURE:
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{
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if (g_USBD_au8SetupPacket[2] == FEATURE_ENDPOINT_HALT)
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{
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USBD_SetStall((uint8_t)(g_USBD_au8SetupPacket[4] & 0xFul));
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DBG_PRINTF("Set feature. stall ep %d\n", g_USBD_au8SetupPacket[4] & 0xFul);
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}
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else if (g_USBD_au8SetupPacket[2] == FEATURE_DEVICE_REMOTE_WAKEUP)
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{
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g_USBD_u8RemoteWakeupEn = (uint8_t)1ul;
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DBG_PRINTF("Set feature. enable remote wakeup\n");
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}
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/* Status stage */
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USBD_SET_DATA1(EP0);
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USBD_SET_PAYLOAD_LEN(EP0, 0ul);
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break;
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}
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case SET_INTERFACE:
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{
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s_USBD_u32UsbAltInterface = g_USBD_au8SetupPacket[2];
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/* Status stage */
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USBD_SET_DATA1(EP0);
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USBD_SET_PAYLOAD_LEN(EP0, 0ul);
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DBG_PRINTF("Set interface to %d\n", s_USBD_u32UsbAltInterface);
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break;
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}
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default:
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{
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/* Setup error, stall the device */
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USBD_SET_EP_STALL(EP0);
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USBD_SET_EP_STALL(EP1);
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DBG_PRINTF("Unsupported request. stall ctrl pipe.\n");
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break;
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}
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}
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}
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}
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/**
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* @brief Prepare the first Control IN pipe
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*
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* @param[in] pu8Buf The pointer of data sent to USB host.
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* @param[in] u32Size The IN transfer size.
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*
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*
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* @details Prepare data for Control IN transfer.
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*
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*/
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void USBD_PrepareCtrlIn(uint8_t pu8Buf[], uint32_t u32Size)
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{
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DBG_PRINTF("Prepare Ctrl In %d\n", u32Size);
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if (u32Size > s_USBD_u32CtrlMaxPktSize)
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{
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// Data size > MXPLD
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s_USBD_pu8CtrlInPointer = pu8Buf + s_USBD_u32CtrlMaxPktSize;
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s_USBD_u32CtrlInSize = u32Size - s_USBD_u32CtrlMaxPktSize;
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USBD_SET_DATA1(EP0);
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USBD_MemCopy((uint8_t *)USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0), pu8Buf, s_USBD_u32CtrlMaxPktSize);
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USBD_SET_PAYLOAD_LEN(EP0, s_USBD_u32CtrlMaxPktSize);
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}
|
|
else
|
|
{
|
|
// Data size <= MXPLD
|
|
s_USBD_pu8CtrlInPointer = 0ul;
|
|
s_USBD_u32CtrlInSize = 0ul;
|
|
|
|
USBD_SET_DATA1(EP0);
|
|
USBD_MemCopy((uint8_t *)USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0), pu8Buf, u32Size);
|
|
USBD_SET_PAYLOAD_LEN(EP0, u32Size);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Repeat Control IN pipe
|
|
*
|
|
*
|
|
*
|
|
* @details This function processes the remained data of Control IN transfer.
|
|
*
|
|
*/
|
|
void USBD_CtrlIn(void)
|
|
{
|
|
|
|
DBG_PRINTF("Ctrl In Ack. residue %d\n", s_USBD_u32CtrlInSize);
|
|
|
|
if (s_USBD_u32CtrlInSize)
|
|
{
|
|
// Process remained data
|
|
if (s_USBD_u32CtrlInSize > s_USBD_u32CtrlMaxPktSize)
|
|
{
|
|
// Data size > MXPLD
|
|
USBD_MemCopy((uint8_t *)USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0), (uint8_t *)s_USBD_pu8CtrlInPointer, s_USBD_u32CtrlMaxPktSize);
|
|
USBD_SET_PAYLOAD_LEN(EP0, s_USBD_u32CtrlMaxPktSize);
|
|
s_USBD_pu8CtrlInPointer += s_USBD_u32CtrlMaxPktSize;
|
|
s_USBD_u32CtrlInSize -= s_USBD_u32CtrlMaxPktSize;
|
|
}
|
|
else
|
|
{
|
|
// Data size <= MXPLD
|
|
USBD_MemCopy((uint8_t *)USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP0), (uint8_t *)s_USBD_pu8CtrlInPointer, s_USBD_u32CtrlInSize);
|
|
USBD_SET_PAYLOAD_LEN(EP0, s_USBD_u32CtrlInSize);
|
|
|
|
s_USBD_pu8CtrlInPointer = 0ul;
|
|
s_USBD_u32CtrlInSize = 0ul;
|
|
}
|
|
}
|
|
else // No more data for IN token
|
|
{
|
|
// In ACK for Set address
|
|
if ((g_USBD_au8SetupPacket[0] == REQ_STANDARD) && (g_USBD_au8SetupPacket[1] == SET_ADDRESS))
|
|
{
|
|
if ((USBD_GET_ADDR() != s_USBD_u32UsbAddr) && (USBD_GET_ADDR() == 0ul))
|
|
{
|
|
USBD_SET_ADDR(s_USBD_u32UsbAddr);
|
|
}
|
|
}
|
|
|
|
/* For the case of data size is integral times maximum packet size */
|
|
if (s_USBD_u8CtrlInZeroFlag)
|
|
{
|
|
USBD_SET_PAYLOAD_LEN(EP0, 0ul);
|
|
s_USBD_u8CtrlInZeroFlag = (uint8_t)0ul;
|
|
}
|
|
|
|
DBG_PRINTF("Ctrl In done.\n");
|
|
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Prepare the first Control OUT pipe
|
|
*
|
|
* @param[in] pu8Buf The pointer of data received from USB host.
|
|
* @param[in] u32Size The OUT transfer size.
|
|
*
|
|
*
|
|
* @details This function is used to prepare the first Control OUT transfer.
|
|
*
|
|
*/
|
|
void USBD_PrepareCtrlOut(uint8_t *pu8Buf, uint32_t u32Size)
|
|
{
|
|
s_USBD_pu8CtrlOutPointer = pu8Buf;
|
|
s_USBD_u32CtrlOutSize = 0ul;
|
|
s_USBD_u32CtrlOutSizeLimit = u32Size;
|
|
USBD_SET_PAYLOAD_LEN(EP1, s_USBD_u32CtrlMaxPktSize);
|
|
}
|
|
|
|
/**
|
|
* @brief Repeat Control OUT pipe
|
|
*
|
|
*
|
|
*
|
|
* @details This function processes the successive Control OUT transfer.
|
|
*
|
|
*/
|
|
void USBD_CtrlOut(void)
|
|
{
|
|
if (s_USBD_u32CtrlOutToggle != (USBD->EPSTS0 & 0xf0))
|
|
{
|
|
s_USBD_u32CtrlOutToggle = USBD->EPSTS0 & 0xf0; //keep H/W EP1 toggle status
|
|
|
|
if (s_USBD_u32CtrlOutSize < s_USBD_u32CtrlOutSizeLimit)
|
|
{
|
|
uint32_t u32Size;
|
|
uint32_t addr;
|
|
|
|
u32Size = USBD_GET_PAYLOAD_LEN(EP1);
|
|
addr = USBD_BUF_BASE + USBD_GET_EP_BUF_ADDR(EP1);
|
|
USBD_MemCopy((uint8_t *)s_USBD_pu8CtrlOutPointer, (uint8_t *)addr, u32Size);
|
|
s_USBD_pu8CtrlOutPointer += u32Size;
|
|
s_USBD_u32CtrlOutSize += u32Size;
|
|
|
|
if (s_USBD_u32CtrlOutSize < s_USBD_u32CtrlOutSizeLimit)
|
|
{
|
|
USBD_SET_PAYLOAD_LEN(EP1, s_USBD_u32CtrlMaxPktSize);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
USBD_SET_PAYLOAD_LEN(EP1, s_USBD_u32CtrlMaxPktSize);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Reset software flags
|
|
*
|
|
*
|
|
*
|
|
* @details This function resets all variables for protocol and resets USB device address to 0.
|
|
*
|
|
*/
|
|
void USBD_SwReset(void)
|
|
{
|
|
uint32_t i;
|
|
|
|
// Reset all variables for protocol
|
|
s_USBD_pu8CtrlInPointer = 0ul;
|
|
s_USBD_u32CtrlInSize = 0ul;
|
|
s_USBD_pu8CtrlOutPointer = 0ul;
|
|
s_USBD_u32CtrlOutSize = 0ul;
|
|
s_USBD_u32CtrlOutSizeLimit = 0ul;
|
|
g_USBD_u32EpStallLock = 0ul;
|
|
memset(g_USBD_au8SetupPacket, 0, 8ul);
|
|
|
|
/* Reset PID DATA0 */
|
|
for (i = 0ul; i < USBD_MAX_EP; i++)
|
|
USBD->EP[i].CFG &= ~USBD_CFG_DSQSYNC_Msk;
|
|
|
|
// Reset USB device address
|
|
USBD_SET_ADDR(0ul);
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief EP stall lock function to avoid stall clear by USB SET FEATURE request.
|
|
*
|
|
* @param[in] u32EpBitmap Use bitmap to select which endpoints will be locked
|
|
*
|
|
*
|
|
* @details This function is used to lock relative endpoint to avoid stall clear by SET FEATURE request.
|
|
* If ep stall locked, user needs to reset USB device or re-configure device to clear it.
|
|
*/
|
|
void USBD_LockEpStall(uint32_t u32EpBitmap)
|
|
{
|
|
g_USBD_u32EpStallLock = u32EpBitmap;
|
|
}
|
|
|
|
/** @} end of group USBD_EXPORTED_FUNCTIONS */
|
|
|
|
/** @} end of group USBD_Driver */
|
|
|
|
/** @} end of group Standard_Driver */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/*** (C) COPYRIGHT 2019 Nuvoton Technology Corp. ***/
|