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qmk_firmware/tool/mbed/mbed-sdk/libraries/USBHost/USBHostMSD/USBHostMSD.cpp
Jun Wako 1fe4406f37 Squashed 'tmk_core/' changes from 7967731..b9e0ea0 
b9e0ea0 Merge commit '7fa9d8bdea3773d1195b04d98fcf27cf48ddd81d' as 'tool/mbed/mbed-sdk'
7fa9d8b Squashed 'tool/mbed/mbed-sdk/' content from commit 7c21ce5

git-subtree-dir: tmk_core
git-subtree-split: b9e0ea08cb940de20b3610ecdda18e9d8cd7c552
2015-04-24 16:26:14 +09:00

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/* mbed USBHost Library
* Copyright (c) 2006-2013 ARM Limited
*
* 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.
*/
#include "USBHostMSD.h"
#if USBHOST_MSD
#include "dbg.h"
#define CBW_SIGNATURE 0x43425355
#define CSW_SIGNATURE 0x53425355
#define DEVICE_TO_HOST 0x80
#define HOST_TO_DEVICE 0x00
#define GET_MAX_LUN (0xFE)
#define BO_MASS_STORAGE_RESET (0xFF)
USBHostMSD::USBHostMSD(const char * rootdir) : FATFileSystem(rootdir)
{
host = USBHost::getHostInst();
init();
}
void USBHostMSD::init() {
dev_connected = false;
dev = NULL;
bulk_in = NULL;
bulk_out = NULL;
dev_connected = false;
blockSize = 0;
blockCount = 0;
msd_intf = -1;
msd_device_found = false;
disk_init = false;
dev_connected = false;
nb_ep = 0;
}
bool USBHostMSD::connected()
{
return dev_connected;
}
bool USBHostMSD::connect()
{
if (dev_connected) {
return true;
}
for (uint8_t i = 0; i < MAX_DEVICE_CONNECTED; i++) {
if ((dev = host->getDevice(i)) != NULL) {
USB_DBG("Trying to connect MSD device\r\n");
if(host->enumerate(dev, this))
break;
if (msd_device_found) {
bulk_in = dev->getEndpoint(msd_intf, BULK_ENDPOINT, IN);
bulk_out = dev->getEndpoint(msd_intf, BULK_ENDPOINT, OUT);
if (!bulk_in || !bulk_out)
continue;
USB_INFO("New MSD device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, msd_intf);
dev->setName("MSD", msd_intf);
host->registerDriver(dev, msd_intf, this, &USBHostMSD::init);
dev_connected = true;
return true;
}
} //if()
} //for()
init();
return false;
}
/*virtual*/ void USBHostMSD::setVidPid(uint16_t vid, uint16_t pid)
{
// we don't check VID/PID for MSD driver
}
/*virtual*/ bool USBHostMSD::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed
{
if ((msd_intf == -1) &&
(intf_class == MSD_CLASS) &&
(intf_subclass == 0x06) &&
(intf_protocol == 0x50)) {
msd_intf = intf_nb;
return true;
}
return false;
}
/*virtual*/ bool USBHostMSD::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
{
if (intf_nb == msd_intf) {
if (type == BULK_ENDPOINT) {
nb_ep++;
if (nb_ep == 2)
msd_device_found = true;
return true;
}
}
return false;
}
int USBHostMSD::testUnitReady() {
USB_DBG("Test unit ready");
return SCSITransfer(NULL, 6, DEVICE_TO_HOST, 0, 0);
}
int USBHostMSD::readCapacity() {
USB_DBG("Read capacity");
uint8_t cmd[10] = {0x25,0,0,0,0,0,0,0,0,0};
uint8_t result[8];
int status = SCSITransfer(cmd, 10, DEVICE_TO_HOST, result, 8);
if (status == 0) {
blockCount = (result[0] << 24) | (result[1] << 16) | (result[2] << 8) | result[3];
blockSize = (result[4] << 24) | (result[5] << 16) | (result[6] << 8) | result[7];
USB_INFO("MSD [dev: %p] - blockCount: %lld, blockSize: %d, Capacity: %lld\r\n", dev, blockCount, blockSize, blockCount*blockSize);
}
return status;
}
int USBHostMSD::SCSIRequestSense() {
USB_DBG("Request sense");
uint8_t cmd[6] = {0x03,0,0,0,18,0};
uint8_t result[18];
int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 18);
return status;
}
int USBHostMSD::inquiry(uint8_t lun, uint8_t page_code) {
USB_DBG("Inquiry");
uint8_t evpd = (page_code == 0) ? 0 : 1;
uint8_t cmd[6] = {0x12, uint8_t((lun << 5) | evpd), page_code, 0, 36, 0};
uint8_t result[36];
int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 36);
if (status == 0) {
char vid_pid[17];
memcpy(vid_pid, &result[8], 8);
vid_pid[8] = 0;
USB_INFO("MSD [dev: %p] - Vendor ID: %s", dev, vid_pid);
memcpy(vid_pid, &result[16], 16);
vid_pid[16] = 0;
USB_INFO("MSD [dev: %p] - Product ID: %s", dev, vid_pid);
memcpy(vid_pid, &result[32], 4);
vid_pid[4] = 0;
USB_INFO("MSD [dev: %p] - Product rev: %s", dev, vid_pid);
}
return status;
}
int USBHostMSD::checkResult(uint8_t res, USBEndpoint * ep) {
// if ep stalled: send clear feature
if (res == USB_TYPE_STALL_ERROR) {
res = host->controlWrite( dev,
USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
CLEAR_FEATURE,
0, ep->getAddress(), NULL, 0);
// set state to IDLE if clear feature successful
if (res == USB_TYPE_OK) {
ep->setState(USB_TYPE_IDLE);
}
}
if (res != USB_TYPE_OK)
return -1;
return 0;
}
int USBHostMSD::SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len) {
int res = 0;
cbw.Signature = CBW_SIGNATURE;
cbw.Tag = 0;
cbw.DataLength = transfer_len;
cbw.Flags = flags;
cbw.LUN = 0;
cbw.CBLength = cmd_len;
memset(cbw.CB,0,sizeof(cbw.CB));
if (cmd) {
memcpy(cbw.CB,cmd,cmd_len);
}
// send the cbw
USB_DBG("Send CBW");
res = host->bulkWrite(dev, bulk_out,(uint8_t *)&cbw, 31);
if (checkResult(res, bulk_out))
return -1;
// data stage if needed
if (data) {
USB_DBG("data stage");
if (flags == HOST_TO_DEVICE) {
res = host->bulkWrite(dev, bulk_out, data, transfer_len);
if (checkResult(res, bulk_out))
return -1;
} else if (flags == DEVICE_TO_HOST) {
res = host->bulkRead(dev, bulk_in, data, transfer_len);
if (checkResult(res, bulk_in))
return -1;
}
}
// status stage
csw.Signature = 0;
USB_DBG("Read CSW");
res = host->bulkRead(dev, bulk_in,(uint8_t *)&csw, 13);
if (checkResult(res, bulk_in))
return -1;
if (csw.Signature != CSW_SIGNATURE) {
return -1;
}
USB_DBG("recv csw: status: %d", csw.Status);
// ModeSense?
if ((csw.Status == 1) && (cmd[0] != 0x03)) {
USB_DBG("request mode sense");
return SCSIRequestSense();
}
// perform reset recovery
if ((csw.Status == 2) && (cmd[0] != 0x03)) {
// send Bulk-Only Mass Storage Reset request
res = host->controlWrite( dev,
USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS,
BO_MASS_STORAGE_RESET,
0, msd_intf, NULL, 0);
// unstall both endpoints
res = host->controlWrite( dev,
USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
CLEAR_FEATURE,
0, bulk_in->getAddress(), NULL, 0);
res = host->controlWrite( dev,
USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD,
CLEAR_FEATURE,
0, bulk_out->getAddress(), NULL, 0);
}
return csw.Status;
}
int USBHostMSD::dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction) {
uint8_t cmd[10];
memset(cmd,0,10);
cmd[0] = (direction == DEVICE_TO_HOST) ? 0x28 : 0x2A;
cmd[2] = (block >> 24) & 0xff;
cmd[3] = (block >> 16) & 0xff;
cmd[4] = (block >> 8) & 0xff;
cmd[5] = block & 0xff;
cmd[7] = (nbBlock >> 8) & 0xff;
cmd[8] = nbBlock & 0xff;
return SCSITransfer(cmd, 10, direction, buf, blockSize*nbBlock);
}
int USBHostMSD::getMaxLun() {
uint8_t buf[1], res;
res = host->controlRead( dev, USB_RECIPIENT_INTERFACE | USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
0xfe, 0, msd_intf, buf, 1);
USB_DBG("max lun: %d", buf[0]);
return res;
}
int USBHostMSD::disk_initialize() {
USB_DBG("FILESYSTEM: init");
uint16_t i, timeout = 10;
getMaxLun();
for (i = 0; i < timeout; i++) {
Thread::wait(100);
if (!testUnitReady())
break;
}
if (i == timeout) {
disk_init = false;
return -1;
}
inquiry(0, 0);
disk_init = 1;
return readCapacity();
}
int USBHostMSD::disk_write(const uint8_t* buffer, uint64_t block_number, uint8_t count) {
USB_DBG("FILESYSTEM: write block: %lld, count: %d", block_number, count);
if (!disk_init) {
disk_initialize();
}
if (!disk_init)
return -1;
for (uint64_t b = block_number; b < block_number + count; b++) {
if (dataTransfer((uint8_t*)buffer, b, 1, HOST_TO_DEVICE))
return -1;
buffer += 512;
}
return 0;
}
int USBHostMSD::disk_read(uint8_t* buffer, uint64_t block_number, uint8_t count) {
USB_DBG("FILESYSTEM: read block: %lld, count: %d", block_number, count);
if (!disk_init) {
disk_initialize();
}
if (!disk_init)
return -1;
for (uint64_t b = block_number; b < block_number + count; b++) {
if (dataTransfer((uint8_t*)buffer, b, 1, DEVICE_TO_HOST))
return -1;
buffer += 512;
}
return 0;
}
uint64_t USBHostMSD::disk_sectors() {
USB_DBG("FILESYSTEM: sectors");
if (!disk_init) {
disk_initialize();
}
if (!disk_init)
return 0;
return blockCount;
}
#endif
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