diff options
Diffstat (limited to 'os/various/usb_msc.c')
| -rw-r--r-- | os/various/usb_msc.c | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/os/various/usb_msc.c b/os/various/usb_msc.c deleted file mode 100644 index 61f4202d3..000000000 --- a/os/various/usb_msc.c +++ /dev/null @@ -1,299 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-
-/*-*
- * @file usb_msc.c
- * @brief USB Mass Storage Class code.
- *
- * @addtogroup USB_MSC
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#include "usb_msc.h"
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local variables. */
-/*===========================================================================*/
-
-/**
- * @brief Zero-filled constant buffer.
- */
-static const uint8_t zerobuf[4] = {0, 0, 0, 0};
-
-/**
- * @brief Answer to the INQUIRY command.
- */
-static const uint8_t scsi_inquiry_data[] = {
- 0x00, /* Direct Access Device. */
- 0x80, /* RMB = 1: Removable Medium. */
- 0x02, /* ISO, ECMA, ANSI = 2. */
- 0x00, /* UFI response format. */
-
- 36 - 4, /* Additional Length. */
- 0x00,
- 0x00,
- 0x00,
- /* Vendor Identification */
- 'C', 'h', 'i', 'b', 'i', 'O', 'S', ' ',
- /* Product Identification */
- 'S', 'D', ' ', 'F', 'l', 'a', 's', 'h',
- ' ', 'D', 'i', 's', 'k', ' ', ' ', ' ',
- /* Product Revision Level */
- '1', '.', '0', ' '
-};
-
-/**
- * @brief Generic buffer.
- */
-uint8_t buf[16];
-
-/*===========================================================================*/
-/* MMC interface code. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* SCSI emulation code. */
-/*===========================================================================*/
-
-static uint8_t scsi_read_format_capacities(uint32_t *nblocks,
- uint32_t *secsize) {
-
- *nblocks = 1024;
- *secsize = 512;
- return 3; /* No Media.*/
-}
-
-/*===========================================================================*/
-/* Mass Storage Class related code. */
-/*===========================================================================*/
-
-/**
- * @brief MSC state machine current state.
- */
-static mscstate_t msc_state;
-
-/**
- * @brief Received CBW.
- */
-static msccbw_t CBW;
-
-/**
- * @brief CSW to be transmitted.
- */
-static msccsw_t CSW;
-
-/**
- * @brief MSC state machine initialization.
- *
- * @param[in] usbp pointer to the @p USBDriver object
- */
-static void msc_reset(USBDriver *usbp) {
-
- msc_state = MSC_IDLE;
- chSysLockFromIsr();
- usbStartReceiveI(usbp, MSC_DATA_OUT_EP, (uint8_t *)&CBW, sizeof CBW);
- chSysUnlockFromIsr();
-}
-
-static void msc_transmit(USBDriver *usbp, const uint8_t *p, size_t n) {
-
- if (n > CBW.dCBWDataTransferLength)
- n = CBW.dCBWDataTransferLength;
- CSW.dCSWDataResidue = CBW.dCBWDataTransferLength - (uint32_t)n;
- chSysLockFromIsr();
- usbStartTransmitI(usbp, MSC_DATA_IN_EP, p, n);
- chSysUnlockFromIsr();
-}
-
-static void msc_sendstatus(USBDriver *usbp) {
-
- msc_state = MSC_SENDING_CSW;
- chSysLockFromIsr();
- usbStartTransmitI(usbp, MSC_DATA_IN_EP, (uint8_t *)&CSW, sizeof CSW);
- chSysUnlockFromIsr();
-}
-
-static bool_t msc_decode(USBDriver *usbp) {
- uint32_t nblocks, secsize;
-
- switch (CBW.CBWCB[0]) {
- case SCSI_REQUEST_SENSE:
- break;
- case SCSI_INQUIRY:
- msc_transmit(usbp, (uint8_t *)&scsi_inquiry_data,
- sizeof scsi_inquiry_data);
- CSW.bCSWStatus = MSC_CSW_STATUS_PASSED;
- break;
- case SCSI_READ_FORMAT_CAPACITIES:
- buf[8] = scsi_read_format_capacities(&nblocks, &secsize);
- buf[0] = buf[1] = buf[2] = 0;
- buf[3] = 8;
- buf[4] = (uint8_t)(nblocks >> 24);
- buf[5] = (uint8_t)(nblocks >> 16);
- buf[6] = (uint8_t)(nblocks >> 8);
- buf[7] = (uint8_t)(nblocks >> 0);
- buf[9] = (uint8_t)(secsize >> 16);
- buf[10] = (uint8_t)(secsize >> 8);
- buf[11] = (uint8_t)(secsize >> 0);
- msc_transmit(usbp, buf, 12);
- CSW.bCSWStatus = MSC_CSW_STATUS_PASSED;
- break;
- default:
- return TRUE;
- }
- return FALSE;
-}
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Default requests hook.
- * @details The application must use this function as callback for the
- * messages hook.
- * The following requests are emulated:
- * - MSC_GET_MAX_LUN_COMMAND.
- * - MSC_MASS_STORAGE_RESET_COMMAND.
- * .
- *
- * @param[in] usbp pointer to the @p USBDriver object
- * @return The hook status.
- * @retval TRUE Message handled internally.
- * @retval FALSE Message not handled.
- */
-bool_t mscRequestsHook(USBDriver *usbp) {
-
- if ((usbp->setup[0] & (USB_RTYPE_TYPE_MASK | USB_RTYPE_RECIPIENT_MASK)) ==
- (USB_RTYPE_TYPE_CLASS | USB_RTYPE_RECIPIENT_INTERFACE)) {
- switch (usbp->setup[1]) {
- case MSC_GET_MAX_LUN_COMMAND:
- usbSetupTransfer(usbp, (uint8_t *)zerobuf, 1, NULL);
- return TRUE;
- case MSC_MASS_STORAGE_RESET_COMMAND:
- msc_reset(usbp);
- usbSetupTransfer(usbp, NULL, 0, NULL);
- return TRUE;
- default:
- return FALSE;
- }
- }
- return FALSE;
-}
-
-/**
- * @brief Default data transmitted callback.
- * @details The application must use this function as callback for the IN
- * data endpoint.
- *
- * @param[in] usbp pointer to the @p USBDriver object
- * @param[in] ep endpoint number
- */
-void mscDataTransmitted(USBDriver *usbp, usbep_t ep) {
-
- switch (msc_state) {
- case MSC_DATA_IN:
- CSW.dCSWSignature = MSC_CSW_SIGNATURE;
- CSW.dCSWTag = CBW.dCBWTag;
- chSysLockFromIsr();
- usbStartTransmitI(usbp, ep, (uint8_t *)&CSW, sizeof CSW);
- chSysUnlockFromIsr();
- msc_state = MSC_SENDING_CSW;
- break;
- case MSC_SENDING_CSW:
- chSysLockFromIsr();
- usbStartReceiveI(usbp, MSC_DATA_OUT_EP, (uint8_t *)&CBW, sizeof CBW);
- chSysUnlockFromIsr();
- msc_state = MSC_IDLE;
- break;
- default:
- ;
- }
-}
-
-/**
- * @brief Default data received callback.
- * @details The application must use this function as callback for the OUT
- * data endpoint.
- *
- * @param[in] usbp pointer to the @p USBDriver object
- * @param[in] ep endpoint number
- */
-void mscDataReceived(USBDriver *usbp, usbep_t ep) {
- size_t n;
-
- n = usbGetReceiveTransactionSizeI(usbp, ep);
- switch (msc_state) {
- case MSC_IDLE:
- if ((n != sizeof(msccbw_t)) || (CBW.dCBWSignature != MSC_CBW_SIGNATURE))
- goto stall_out; /* 6.6.1 */
-
- /* Decoding SCSI command.*/
- if (msc_decode(usbp)) {
- if (CBW.dCBWDataTransferLength == 0) {
- CSW.bCSWStatus = MSC_CSW_STATUS_FAILED;
- CSW.dCSWDataResidue = 0;
- msc_sendstatus(usbp);
- return;
- }
- goto stall_both;
- }
-
- /* Commands with zero transfer length, 5.1.*/
- if (CBW.dCBWDataTransferLength == 0) {
- msc_sendstatus(usbp);
- return;
- }
-
- /* Transfer direction.*/
- if (CBW.bmCBWFlags & 0x80) {
- /* IN, Device to Host.*/
- msc_state = MSC_DATA_IN;
- }
- else {
- /* OUT, Host to Device.*/
- msc_state = MSC_DATA_OUT;
- }
- break;
- case MSC_DATA_OUT:
- break;
- default:
- ;
- }
- return;
-stall_out:
- msc_state = MSC_ERROR;
- chSysLockFromIsr();
- usbStallReceiveI(usbp, ep);
- chSysUnlockFromIsr();
- return;
-stall_both:
- msc_state = MSC_ERROR;
- chSysLockFromIsr();
- usbStallTransmitI(usbp, ep);
- usbStallReceiveI(usbp, ep);
- chSysUnlockFromIsr();
- return;
-}
-
-/** @} */
|