848 lines
22 KiB
C
848 lines
22 KiB
C
#include <string.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#define CONFIG_USB_STORAGE
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#include "usb_os_adapter.h"
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#include "trace.h"
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#include <linux/usb/ch9.h>
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#include "scsi.h"
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#include "usb.h"
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#include "dwc2_compat.h"
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#include <linux/errno.h>
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#include "ark_dwc2.h"
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#include "usb_massstorage.h"
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#include "timer.h"
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#include "fs/ff.h"
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#include "fs/diskio.h"
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/* direction table -- this indicates the direction of the data
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* transfer for each command code -- a 1 indicates input
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*/
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static const unsigned char us_direction[256/8] = {
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0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
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0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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#define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
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#pragma pack(ARCH_DMA_MINALIGN)
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static struct scsi_cmd usb_ccb;
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static u32 CBWTag;
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static int usb_max_devs; /* number of highest available usb device */
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struct blk_desc usb_dev_desc[6];
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struct us_data;
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typedef int (*trans_cmnd)(struct scsi_cmd *cb, struct us_data *data);
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typedef int (*trans_reset)(struct us_data *data);
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#define USB_READY (1 << 0)
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struct us_data {
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struct usb_device *pusb_dev; /* this usb_device */
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unsigned int flags; /* from filter initially */
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unsigned char ifnum; /* interface number */
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unsigned char ep_in; /* in endpoint */
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unsigned char ep_out; /* out ....... */
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unsigned char ep_int; /* interrupt . */
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unsigned char subclass; /* as in overview */
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unsigned char protocol; /* .............. */
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unsigned char attention_done; /* force attn on first cmd */
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unsigned short ip_data; /* interrupt data */
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int action; /* what to do */
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int ip_wanted; /* needed */
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int *irq_handle; /* for USB int requests */
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unsigned int irqpipe; /* pipe for release_irq */
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unsigned char irqmaxp; /* max packed for irq Pipe */
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unsigned char irqinterval; /* Intervall for IRQ Pipe */
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struct scsi_cmd *srb; /* current srb */
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trans_reset transport_reset; /* reset routine */
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trans_cmnd transport; /* transport routine */
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unsigned short max_xfer_blk; /* maximum transfer blocks */
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};
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static struct us_data usb_stor[USB_MAX_STOR_DEV];
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#define USB_STOR_TRANSPORT_GOOD 0
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#define USB_STOR_TRANSPORT_FAILED -1
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#define USB_STOR_TRANSPORT_ERROR -2
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static int usb_media_ready = 0;
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/***********************************************************************
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* Data transfer routines
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***********************************************************************/
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static unsigned int usb_get_max_lun(struct us_data *us)
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{
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int len;
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
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len = usb_control_msg(us->pusb_dev,
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usb_rcvctrlpipe(us->pusb_dev, 0),
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US_BBB_GET_MAX_LUN,
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USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
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0, us->ifnum,
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result, sizeof(char),
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USB_CNTL_TIMEOUT * 5);
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//debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
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return (len > 0) ? *result : 0;
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}
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static int usb_stor_BBB_reset(struct us_data *us)
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{
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int result;
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unsigned int pipe;
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/*
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* Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
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*
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* For Reset Recovery the host shall issue in the following order:
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* a) a Bulk-Only Mass Storage Reset
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* b) a Clear Feature HALT to the Bulk-In endpoint
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* c) a Clear Feature HALT to the Bulk-Out endpoint
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*
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* This is done in 3 steps.
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*
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* If the reset doesn't succeed, the device should be port reset.
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*
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* This comment stolen from FreeBSD's /sys/dev/usb/umass.c.
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*/
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//debug("BBB_reset\n");
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result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
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US_BBB_RESET,
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USB_TYPE_CLASS | USB_RECIP_INTERFACE,
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0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5);
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if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
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//debug("RESET:stall\n");
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return -1;
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}
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if (usb_media_ready == 0)
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return -1;
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/* long wait for reset */
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mdelay(150);
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/* debug("BBB_reset result %d: status %lX reset\n",
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result, us->pusb_dev->status); */
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pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
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result = usb_clear_halt(us->pusb_dev, pipe);
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/* long wait for reset */
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mdelay(150);
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/* debug("BBB_reset result %d: status %lX clearing IN endpoint\n",
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result, us->pusb_dev->status); */
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/* long wait for reset */
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pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
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result = usb_clear_halt(us->pusb_dev, pipe);
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mdelay(150);
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/* debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
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result, us->pusb_dev->status);
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debug("BBB_reset done\n"); */
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return 0;
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}
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/*
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* Set up the command for a BBB device. Note that the actual SCSI
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* command is copied into cbw.CBWCDB.
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*/
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static int usb_stor_BBB_comdat(struct scsi_cmd *srb, struct us_data *us)
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{
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int result;
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int actlen;
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int dir_in;
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unsigned int pipe;
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ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, cbw, 1);
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dir_in = US_DIRECTION(srb->cmd[0]);
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/* sanity checks */
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if (!(srb->cmdlen <= CBWCDBLENGTH)) {
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//debug("usb_stor_BBB_comdat:cmdlen too large\n");
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return -1;
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}
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/* always OUT to the ep */
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pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
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cbw->dCBWSignature = cpu_to_le32(CBWSIGNATURE);
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cbw->dCBWTag = cpu_to_le32(CBWTag++);
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cbw->dCBWDataTransferLength = cpu_to_le32(srb->datalen);
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cbw->bCBWFlags = (dir_in ? CBWFLAGS_IN : CBWFLAGS_OUT);
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cbw->bCBWLUN = srb->lun;
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cbw->bCDBLength = srb->cmdlen;
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/* copy the command data into the CBW command data buffer */
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/* DST SRC LEN!!! */
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memcpy(cbw->CBWCDB, srb->cmd, srb->cmdlen);
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result = usb_bulk_msg(us->pusb_dev, pipe, cbw, UMASS_BBB_CBW_SIZE,
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&actlen, USB_CNTL_TIMEOUT * 5);
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if (result < 0)
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;//debug("usb_stor_BBB_comdat:usb_bulk_msg error\n");
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return result;
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}
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#define USB_TRANSPORT_UNKNOWN_RETRY 5
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#define USB_TRANSPORT_NOT_READY_RETRY 10
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/* clear a stall on an endpoint - special for BBB devices */
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static int usb_stor_BBB_clear_endpt_stall(struct us_data *us, u8 endpt)
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{
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/* ENDPOINT_HALT = 0, so set value to 0 */
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return usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0),
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USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
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endpt, NULL, 0, USB_CNTL_TIMEOUT * 5);
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}
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static int usb_stor_BBB_transport(struct scsi_cmd *srb, struct us_data *us)
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{
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int result, retry;
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int dir_in;
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int actlen, data_actlen;
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unsigned int pipe, pipein, pipeout;
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ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, csw, 1);
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dir_in = US_DIRECTION(srb->cmd[0]);
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/* COMMAND phase */
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//debug("COMMAND phase\n");
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result = usb_stor_BBB_comdat(srb, us);
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if (result < 0) {
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/* debug("failed to send CBW status %ld\n",
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us->pusb_dev->status); */
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usb_stor_BBB_reset(us);
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return USB_STOR_TRANSPORT_FAILED;
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}
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if (!(us->flags & USB_READY))
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mdelay(5);
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pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
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pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
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/* DATA phase + error handling */
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data_actlen = 0;
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/* no data, go immediately to the STATUS phase */
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if (srb->datalen == 0)
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goto st;
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//debug("DATA phase\n");
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if (dir_in)
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pipe = pipein;
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else
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pipe = pipeout;
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result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen,
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&data_actlen, USB_CNTL_TIMEOUT * 5);
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/* special handling of STALL in DATA phase */
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if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
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//debug("DATA:stall\n");
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/* clear the STALL on the endpoint */
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result = usb_stor_BBB_clear_endpt_stall(us,
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dir_in ? us->ep_in : us->ep_out);
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if (result >= 0)
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/* continue on to STATUS phase */
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goto st;
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}
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if (result < 0) {
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/* debug("usb_bulk_msg error status %ld\n",
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us->pusb_dev->status); */
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usb_stor_BBB_reset(us);
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return USB_STOR_TRANSPORT_FAILED;
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}
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/* STATUS phase + error handling */
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char *tmpcsw;
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st:
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retry = 0;
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again:
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//debug("STATUS phase\n");
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tmpcsw = (char *)csw;
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tmpcsw[0] = 0x55;
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tmpcsw[1] = 0x53;
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tmpcsw[2] = 0x42;
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tmpcsw[3] = 0x43;
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tmpcsw[4] = 0x01;
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tmpcsw[5] = 0x00;
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tmpcsw[6] = 0x00;
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tmpcsw[7] = 0x00;
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tmpcsw[8] = 0x24;
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tmpcsw[9] = 0x00;
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tmpcsw[10] = 0x00;
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tmpcsw[11] = 0x00;
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tmpcsw[12] = 0x80;
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result = usb_bulk_msg(us->pusb_dev, pipein, csw, UMASS_BBB_CSW_SIZE,
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&actlen, USB_CNTL_TIMEOUT);
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/* special handling of STALL in STATUS phase */
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if ((result < 0) && (retry < 1) &&
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(us->pusb_dev->status & USB_ST_STALLED)) {
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//debug("STATUS:stall\n");
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/* clear the STALL on the endpoint */
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result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in);
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if (result >= 0 && (retry++ < 1))
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/* do a retry */
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goto again;
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}
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if (result < 0) {
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/* debug("usb_bulk_msg error status %ld\n",
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us->pusb_dev->status); */
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usb_stor_BBB_reset(us);
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return USB_STOR_TRANSPORT_FAILED;
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}
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/* misuse pipe to get the residue */
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pipe = le32_to_cpu(csw->dCSWDataResidue);
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if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
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pipe = srb->datalen - data_actlen;
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if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
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//debug("!CSWSIGNATURE\n");
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usb_stor_BBB_reset(us);
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return USB_STOR_TRANSPORT_FAILED;
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} else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
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//debug("!Tag\n");
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usb_stor_BBB_reset(us);
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return USB_STOR_TRANSPORT_FAILED;
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} else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
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//debug(">PHASE\n");
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usb_stor_BBB_reset(us);
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return USB_STOR_TRANSPORT_FAILED;
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} else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
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//debug("=PHASE\n");
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usb_stor_BBB_reset(us);
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return USB_STOR_TRANSPORT_FAILED;
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} else if (data_actlen > srb->datalen) {
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/* debug("transferred %dB instead of %ldB\n",
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data_actlen, srb->datalen); */
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return USB_STOR_TRANSPORT_FAILED;
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} else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
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//debug("FAILED\n");
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return USB_STOR_TRANSPORT_FAILED;
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}
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return result;
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}
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static int usb_stor_irq(struct usb_device *dev)
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{
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struct us_data *us;
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us = (struct us_data *)dev->privptr;
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if (us->ip_wanted)
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us->ip_wanted = 0;
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return 0;
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}
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static void usb_stor_set_max_xfer_blk(struct usb_device *udev,
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struct us_data *us)
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{
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unsigned short blk = 20;
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us->max_xfer_blk = blk;
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}
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static int usb_inquiry(struct scsi_cmd *srb, struct us_data *ss)
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{
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int retry, i;
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retry = 5;
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do {
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memset(&srb->cmd[0], 0, 12);
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srb->cmd[0] = SCSI_INQUIRY;
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srb->cmd[1] = srb->lun << 5;
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srb->cmd[4] = 36;
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srb->datalen = 36;
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srb->cmdlen = 12;
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i = ss->transport(srb, ss);
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//debug("inquiry returns %d\n", i);
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if (i == 0)
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break;
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} while (--retry);
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if (!retry) {
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//printf("error in inquiry\n");
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return -1;
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}
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return 0;
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}
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static int usb_request_sense(struct scsi_cmd *srb, struct us_data *ss)
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{
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char *ptr;
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int ret = -1;
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ptr = (char *)srb->pdata;
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memset(&srb->cmd[0], 0, 12);
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srb->cmd[0] = SCSI_REQ_SENSE;
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srb->cmd[1] = srb->lun << 5;
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srb->cmd[4] = 18;
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srb->datalen = 18;
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srb->pdata = &srb->sense_buf[0];
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srb->cmdlen = 12;
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ret = ss->transport(srb, ss);
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/* debug("Request Sense returned %02X %02X %02X\n",
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srb->sense_buf[2], srb->sense_buf[12],
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srb->sense_buf[13]); */
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srb->pdata = (unsigned char *)ptr;
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return ret;
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}
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static int usb_test_unit_ready(struct scsi_cmd *srb, struct us_data *ss)
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{
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int retries = 10;
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int ret = -1;
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do {
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memset(&srb->cmd[0], 0, 12);
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srb->cmd[0] = SCSI_TST_U_RDY;
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srb->cmd[1] = srb->lun << 5;
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srb->datalen = 0;
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srb->cmdlen = 12;
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if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD) {
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ss->flags |= USB_READY;
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return 0;
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}
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ret = usb_request_sense(srb, ss);
|
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if (ret != USB_STOR_TRANSPORT_GOOD)
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break;
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/*
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* Check the Key Code Qualifier, if it matches
|
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* "Not Ready - medium not present"
|
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* (the sense Key equals 0x2 and the ASC is 0x3a)
|
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* return immediately as the medium being absent won't change
|
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* unless there is a user action.
|
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*/
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if ((srb->sense_buf[2] == 0x02) &&
|
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(srb->sense_buf[12] == 0x3a))
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return -1;
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if (usb_media_ready == 0)
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break;
|
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mdelay(100);
|
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} while (retries--);
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|
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return -1;
|
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}
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|
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static int usb_read_capacity(struct scsi_cmd *srb, struct us_data *ss)
|
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{
|
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int retry;
|
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/* XXX retries */
|
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retry = 3;
|
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do {
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memset(&srb->cmd[0], 0, 12);
|
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srb->cmd[0] = SCSI_RD_CAPAC;
|
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srb->cmd[1] = srb->lun << 5;
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srb->datalen = 8;
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srb->cmdlen = 12;
|
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if (ss->transport(srb, ss) == USB_STOR_TRANSPORT_GOOD)
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return 0;
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} while (retry--);
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|
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return -1;
|
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}
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|
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static int usb_read_10(struct scsi_cmd *srb, struct us_data *ss,
|
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unsigned long start, unsigned short blocks)
|
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{
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memset(&srb->cmd[0], 0, 12);
|
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srb->cmd[0] = SCSI_READ10;
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srb->cmd[1] = srb->lun << 5;
|
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srb->cmd[2] = ((unsigned char) (start >> 24)) & 0xff;
|
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srb->cmd[3] = ((unsigned char) (start >> 16)) & 0xff;
|
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srb->cmd[4] = ((unsigned char) (start >> 8)) & 0xff;
|
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srb->cmd[5] = ((unsigned char) (start)) & 0xff;
|
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srb->cmd[7] = ((unsigned char) (blocks >> 8)) & 0xff;
|
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srb->cmd[8] = (unsigned char) blocks & 0xff;
|
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srb->cmdlen = 12;
|
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//debug("read10: start %lx blocks %x\n", start, blocks);
|
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return ss->transport(srb, ss);
|
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}
|
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|
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/* Probe to see if a new device is actually a Storage device */
|
|
int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
|
|
struct us_data *ss)
|
|
{
|
|
struct usb_interface *iface;
|
|
int i;
|
|
struct usb_endpoint_descriptor *ep_desc;
|
|
unsigned int flags = 0;
|
|
|
|
/* let's examine the device now */
|
|
iface = &dev->config.if_desc[ifnum];
|
|
if (dev->descriptor.bDeviceClass != 0 ||
|
|
iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
|
|
iface->desc.bInterfaceSubClass < US_SC_MIN ||
|
|
iface->desc.bInterfaceSubClass > US_SC_MAX) {
|
|
//SendUartString("Not mass storage\r\n");
|
|
/* if it's not a mass storage, we go no further */
|
|
return 0;
|
|
}
|
|
memset(ss, 0, sizeof(struct us_data));
|
|
usb_media_ready = 1;
|
|
|
|
/* At this point, we know we've got a live one */
|
|
//debug("\n\nUSB Mass Storage device detected\n");
|
|
|
|
/* Initialize the us_data structure with some useful info */
|
|
ss->flags = flags;
|
|
ss->ifnum = ifnum;
|
|
ss->pusb_dev = dev;
|
|
ss->attention_done = 0;
|
|
ss->subclass = iface->desc.bInterfaceSubClass;
|
|
ss->protocol = iface->desc.bInterfaceProtocol;
|
|
|
|
/* set the handler pointers based on the protocol */
|
|
//debug("Transport: ");
|
|
switch (ss->protocol) {
|
|
case US_PR_BULK:
|
|
//debug("Bulk/Bulk/Bulk\n");
|
|
ss->transport = usb_stor_BBB_transport;
|
|
ss->transport_reset = usb_stor_BBB_reset;
|
|
break;
|
|
default:
|
|
//printf("USB Storage Transport unknown / not yet implemented\n");
|
|
return 0;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* We are expecting a minimum of 2 endpoints - in and out (bulk).
|
|
* An optional interrupt is OK (necessary for CBI protocol).
|
|
* We will ignore any others.
|
|
*/
|
|
for (i = 0; i < iface->desc.bNumEndpoints; i++) {
|
|
ep_desc = &iface->ep_desc[i];
|
|
/* is it an BULK endpoint? */
|
|
if ((ep_desc->bmAttributes &
|
|
USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
|
|
if (ep_desc->bEndpointAddress & USB_DIR_IN)
|
|
ss->ep_in = ep_desc->bEndpointAddress &
|
|
USB_ENDPOINT_NUMBER_MASK;
|
|
else
|
|
ss->ep_out =
|
|
ep_desc->bEndpointAddress &
|
|
USB_ENDPOINT_NUMBER_MASK;
|
|
}
|
|
|
|
/* is it an interrupt endpoint? */
|
|
if ((ep_desc->bmAttributes &
|
|
USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
|
|
ss->ep_int = ep_desc->bEndpointAddress &
|
|
USB_ENDPOINT_NUMBER_MASK;
|
|
ss->irqinterval = ep_desc->bInterval;
|
|
}
|
|
}
|
|
/* debug("Endpoints In %d Out %d Int %d\n",
|
|
ss->ep_in, ss->ep_out, ss->ep_int); */
|
|
|
|
/* Do some basic sanity checks, and bail if we find a problem */
|
|
if (usb_set_interface(dev, iface->desc.bInterfaceNumber, 0) ||
|
|
!ss->ep_in || !ss->ep_out ||
|
|
(ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
|
|
//debug("Problems with device\n");
|
|
return 0;
|
|
}
|
|
/* set class specific stuff */
|
|
/* We only handle certain protocols. Currently, these are
|
|
* the only ones.
|
|
* The SFF8070 accepts the requests used in u-boot
|
|
*/
|
|
if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI &&
|
|
ss->subclass != US_SC_8070) {
|
|
//printf("Sorry, protocol %d not yet supported.\n", ss->subclass);
|
|
return 0;
|
|
}
|
|
if (ss->ep_int) {
|
|
/* we had found an interrupt endpoint, prepare irq pipe
|
|
* set up the IRQ pipe and handler
|
|
*/
|
|
ss->irqinterval = (ss->irqinterval > 0) ? ss->irqinterval : 255;
|
|
ss->irqpipe = usb_rcvintpipe(ss->pusb_dev, ss->ep_int);
|
|
ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
|
|
dev->irq_handle = usb_stor_irq;
|
|
}
|
|
|
|
/* Set the maximum transfer size per host controller setting */
|
|
usb_stor_set_max_xfer_blk(dev, ss);
|
|
|
|
dev->privptr = (void *)ss;
|
|
return 1;
|
|
}
|
|
|
|
int usb_stor_get_info(struct usb_device *dev, struct us_data *ss,
|
|
struct blk_desc *dev_desc)
|
|
{
|
|
unsigned char perq, modi;
|
|
ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2);
|
|
ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36);
|
|
u32 capacity, blksz;
|
|
struct scsi_cmd *pccb = &usb_ccb;
|
|
memset(usb_stor_buf, 0, 36);
|
|
pccb->pdata = usb_stor_buf;
|
|
|
|
dev_desc->target = dev->devnum;
|
|
pccb->lun = dev_desc->lun;
|
|
//debug(" address %d\n", dev_desc->target);
|
|
|
|
if (usb_inquiry(pccb, ss)) {
|
|
//debug("%s: usb_inquiry() failed\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
perq = usb_stor_buf[0];
|
|
modi = usb_stor_buf[1];
|
|
|
|
/*
|
|
* Skip unknown devices (0x1f) and enclosure service devices (0x0d),
|
|
* they would not respond to test_unit_ready .
|
|
*/
|
|
if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) {
|
|
//debug("%s: unknown/unsupported device\n", __func__);
|
|
return 0;
|
|
}
|
|
if ((modi&0x80) == 0x80) {
|
|
/* drive is removable */
|
|
dev_desc->removable = 1;
|
|
}
|
|
memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8);
|
|
memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16);
|
|
memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4);
|
|
dev_desc->vendor[8] = 0;
|
|
dev_desc->product[16] = 0;
|
|
dev_desc->revision[4] = 0;
|
|
/* debug("ISO Vers %X, Response Data %X\n", usb_stor_buf[2],
|
|
usb_stor_buf[3]); */
|
|
if (usb_test_unit_ready(pccb, ss)) {
|
|
/* printf("Device NOT ready\n"
|
|
" Request Sense returned %02X %02X %02X\n",
|
|
pccb->sense_buf[2], pccb->sense_buf[12],
|
|
pccb->sense_buf[13]); */
|
|
if (dev_desc->removable == 1)
|
|
dev_desc->type = perq;
|
|
return 0;
|
|
}
|
|
pccb->pdata = (unsigned char *)cap;
|
|
memset(pccb->pdata, 0, 8);
|
|
if (usb_read_capacity(pccb, ss) != 0) {
|
|
//printf("READ_CAP ERROR\n");
|
|
cap[0] = 2880;
|
|
cap[1] = 0x200;
|
|
}
|
|
ss->flags &= ~USB_READY;
|
|
//debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]);
|
|
#if 0
|
|
if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */
|
|
cap[0] >>= 16;
|
|
|
|
cap[0] = cpu_to_be32(cap[0]);
|
|
cap[1] = cpu_to_be32(cap[1]);
|
|
#endif
|
|
|
|
capacity = be32_to_cpu(cap[0]) + 1;
|
|
blksz = be32_to_cpu(cap[1]);
|
|
|
|
dev_desc->lba = capacity;
|
|
dev_desc->blksz = blksz;
|
|
dev_desc->log2blksz = LOG2(dev_desc->blksz);
|
|
dev_desc->type = perq;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
|
|
lbaint_t blkcnt, void *buffer)
|
|
{
|
|
lbaint_t start, blks;
|
|
uintptr_t buf_addr;
|
|
unsigned short smallblks;
|
|
struct usb_device *udev;
|
|
struct us_data *ss;
|
|
int retry;
|
|
struct scsi_cmd *srb = &usb_ccb;
|
|
|
|
if (blkcnt == 0)
|
|
return 0;
|
|
/* Setup device */
|
|
udev = usb_dev_desc[block_dev->devnum].priv;
|
|
if (!udev) {
|
|
return 0;
|
|
}
|
|
|
|
ss = (struct us_data *)udev->privptr;
|
|
usb_disable_asynch(1); /* asynch transfer not allowed */
|
|
srb->lun = block_dev->lun;
|
|
buf_addr = (uintptr_t)buffer;
|
|
start = blknr;
|
|
blks = blkcnt;
|
|
|
|
do {
|
|
retry = 2;
|
|
srb->pdata = (unsigned char *)buf_addr;
|
|
if (blks > ss->max_xfer_blk)
|
|
smallblks = ss->max_xfer_blk;
|
|
else
|
|
smallblks = (unsigned short) blks;
|
|
retry_it:
|
|
if (usb_media_ready == 0)
|
|
break;
|
|
/* if (smallblks == ss->max_xfer_blk)
|
|
usb_show_progress(); */
|
|
srb->datalen = block_dev->blksz * smallblks;
|
|
srb->pdata = (unsigned char *)buf_addr;
|
|
if (usb_read_10(srb, ss, start, smallblks)) {
|
|
usb_request_sense(srb, ss);
|
|
if (retry--)
|
|
goto retry_it;
|
|
blkcnt -= blks;
|
|
break;
|
|
}
|
|
start += smallblks;
|
|
blks -= smallblks;
|
|
buf_addr += srb->datalen;
|
|
} while (blks != 0);
|
|
ss->flags &= ~USB_READY;
|
|
|
|
usb_disable_asynch(0);
|
|
|
|
return blkcnt;
|
|
}
|
|
|
|
static int usb_stor_probe_device(struct usb_device *udev)
|
|
{
|
|
int lun, max_lun;
|
|
int start;
|
|
|
|
if (udev == NULL)
|
|
return -ENOENT; /* no more devices available */
|
|
|
|
//debug("\n\nProbing for storage\n");
|
|
|
|
/* We don't have space to even probe if we hit the maximum */
|
|
if (usb_max_devs == USB_MAX_STOR_DEV) {
|
|
/* printf("max USB Storage Device reached: %d stopping\n",
|
|
usb_max_devs); */
|
|
return -ENOSPC;
|
|
}
|
|
|
|
if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs]))
|
|
return 0;
|
|
|
|
/*
|
|
* OK, it's a storage device. Iterate over its LUNs and populate
|
|
* usb_dev_desc'
|
|
*/
|
|
start = usb_max_devs;
|
|
|
|
max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]);
|
|
for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV;
|
|
lun++) {
|
|
struct blk_desc *blkdev;
|
|
|
|
blkdev = &usb_dev_desc[usb_max_devs];
|
|
memset(blkdev, '\0', sizeof(struct blk_desc));
|
|
blkdev->if_type = IF_TYPE_USB;
|
|
blkdev->devnum = usb_max_devs;
|
|
blkdev->part_type = PART_TYPE_UNKNOWN;
|
|
blkdev->target = 0xff;
|
|
blkdev->type = DEV_TYPE_UNKNOWN;
|
|
blkdev->block_read = usb_stor_read;
|
|
//blkdev->block_write = usb_stor_write;
|
|
blkdev->lun = lun;
|
|
blkdev->priv = udev;
|
|
|
|
if (usb_stor_get_info(udev, &usb_stor[start],
|
|
&usb_dev_desc[usb_max_devs]) == 1) {
|
|
//debug("partype: %d\n", blkdev->part_type);
|
|
//part_init(blkdev);
|
|
//debug("partype: %d\n", blkdev->part_type);
|
|
usb_max_devs++;
|
|
//debug("%s: Found device %p\n", __func__, udev);
|
|
/* blkdev->disk_priv = (void *)FF_USBDiskInit("/usb");
|
|
if (NULL == blkdev->disk_priv) {
|
|
printf("FF_USBDiskInit failed\r\n");
|
|
continue;
|
|
}
|
|
mdelay(200);
|
|
usb_disk_file_test(); */
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void usb_stor_reset(void)
|
|
{
|
|
usb_max_devs = 0;
|
|
CBWTag = 0;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
* scan the usb and reports device info
|
|
* to the user if mode = 1
|
|
* returns current device or -1 if no
|
|
*/
|
|
int usb_stor_scan(int mode)
|
|
{
|
|
unsigned char i;
|
|
|
|
if (mode == 1)
|
|
SendUartString("scanning usb for storage devices... ");
|
|
|
|
usb_disable_asynch(1); /* asynch transfer not allowed */
|
|
|
|
usb_stor_reset();
|
|
for (i = 0; i < USB_MAX_DEVICE; i++) {
|
|
struct usb_device *dev;
|
|
|
|
dev = usb_get_dev_index(i); /* get device */
|
|
//debug("i=%d\n", i);
|
|
if (usb_stor_probe_device(dev))
|
|
break;
|
|
} /* for */
|
|
|
|
usb_disable_asynch(0); /* asynch transfer allowed */
|
|
|
|
if (usb_max_devs > 0) {
|
|
SendUartString("Storage Device(s) found\r\n");
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
void usb_stor_disconnect()
|
|
{
|
|
usb_media_ready = 0;
|
|
}
|
|
|
|
int USB_disk_initialize(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int USB_disk_read(void *buff, DWORD sector, BYTE count)
|
|
{
|
|
struct blk_desc *dev_desc = &usb_dev_desc[0];
|
|
|
|
return dev_desc->block_read(dev_desc, sector, count, buff);
|
|
}
|
|
|
|
int USB_disk_ioctl(BYTE ctrl, void *buff)
|
|
{
|
|
struct blk_desc *dev_desc = &usb_dev_desc[0];
|
|
|
|
switch(ctrl)
|
|
{
|
|
case CTRL_SYNC:
|
|
break;
|
|
case GET_SECTOR_COUNT:
|
|
*(DWORD*)buff = dev_desc->lba;
|
|
break;
|
|
case GET_BLOCK_SIZE:
|
|
*(DWORD*)buff = 512;
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|