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-rw-r--r--common/usb_storage.c895
1 files changed, 895 insertions, 0 deletions
diff --git a/common/usb_storage.c b/common/usb_storage.c
new file mode 100644
index 0000000..b134721
--- /dev/null
+++ b/common/usb_storage.c
@@ -0,0 +1,895 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * Most of this source has been derived from the Linux USB
+ * project.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+/* Note:
+ * Currently only the CBI transport protocoll has been implemented, and it
+ * is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB
+ * transport protocoll may work as well.
+ */
+
+
+
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+
+
+#if (CONFIG_COMMANDS & CFG_CMD_USB)
+#include <usb.h>
+
+#ifdef CONFIG_USB_STORAGE
+
+#undef USB_STOR_DEBUG
+
+#ifdef USB_STOR_DEBUG
+#define USB_STOR_PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define USB_STOR_PRINTF(fmt,args...)
+#endif
+
+#include <scsi.h>
+/* direction table -- this indicates the direction of the data
+ * transfer for each command code -- a 1 indicates input
+ */
+unsigned char us_direction[256/8] = {
+ 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
+ 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+#define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
+
+static unsigned char usb_stor_buf[512];
+static ccb usb_ccb;
+
+/*
+ * CBI style
+ */
+
+#define US_CBI_ADSC 0
+
+
+#define USB_MAX_STOR_DEV 5
+static int usb_max_devs; /* number of highest available usb device */
+
+static block_dev_desc_t usb_dev_desc[USB_MAX_STOR_DEV];
+
+struct us_data;
+typedef int (*trans_cmnd)(ccb*, struct us_data*);
+typedef int (*trans_reset)(struct us_data*);
+
+struct us_data {
+ struct usb_device *pusb_dev; /* this usb_device */
+ unsigned int flags; /* from filter initially */
+ unsigned char ifnum; /* interface number */
+ unsigned char ep_in; /* in endpoint */
+ unsigned char ep_out; /* out ....... */
+ unsigned char ep_int; /* interrupt . */
+ unsigned char subclass; /* as in overview */
+ unsigned char protocol; /* .............. */
+ unsigned char attention_done; /* force attn on first cmd */
+ unsigned short ip_data; /* interrupt data */
+ int action; /* what to do */
+ int ip_wanted; /* needed */
+ int *irq_handle; /* for USB int requests */
+ unsigned int irqpipe; /* pipe for release_irq */
+ unsigned char irqmaxp; /* max packed for irq Pipe */
+ unsigned char irqinterval; /* Intervall for IRQ Pipe */
+ ccb *srb; /* current srb */
+ trans_reset transport_reset; /* reset routine */
+ trans_cmnd transport; /* transport routine */
+};
+
+static struct us_data usb_stor[USB_MAX_STOR_DEV];
+
+
+
+#define USB_STOR_TRANSPORT_GOOD 0
+#define USB_STOR_TRANSPORT_FAILED -1
+#define USB_STOR_TRANSPORT_ERROR -2
+
+
+
+
+
+
+int usb_stor_get_info(struct usb_device *dev, struct us_data *us, block_dev_desc_t *dev_desc);
+int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data *ss);
+unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, unsigned long *buffer);
+struct usb_device * usb_get_dev_index(int index);
+void uhci_show_temp_int_td(void);
+
+block_dev_desc_t *usb_stor_get_dev(int index)
+{
+ return &usb_dev_desc[index];
+}
+
+
+void usb_show_progress(void)
+{
+ printf(".");
+}
+
+/*********************************************************************************
+ * (re)-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;
+ struct usb_device *dev;
+
+ if(mode==1) {
+ printf("scanning bus for storage devices...\n");
+ }
+ usb_disable_asynch(1); /* asynch transfer not allowed */
+
+ for(i=0;i<USB_MAX_STOR_DEV;i++) {
+ memset(&usb_dev_desc[i],0,sizeof(block_dev_desc_t));
+ usb_dev_desc[i].target=0xff;
+ usb_dev_desc[i].if_type=IF_TYPE_USB;
+ usb_dev_desc[i].dev=i;
+ usb_dev_desc[i].part_type=PART_TYPE_UNKNOWN;
+ usb_dev_desc[i].block_read=usb_stor_read;
+ }
+ usb_max_devs=0;
+ for(i=0;i<USB_MAX_DEVICE;i++) {
+ dev=usb_get_dev_index(i); /* get device */
+ USB_STOR_PRINTF("i=%d\n",i);
+ if(dev==NULL) {
+ break; /* no more devices avaiable */
+ }
+ if(usb_storage_probe(dev,0,&usb_stor[usb_max_devs])) { /* ok, it is a storage devices */
+ /* get info and fill it in */
+
+ if(usb_stor_get_info(dev, &usb_stor[usb_max_devs], &usb_dev_desc[usb_max_devs])) {
+ if(mode==1) {
+ printf (" Device %d: ", usb_max_devs);
+ dev_print(&usb_dev_desc[usb_max_devs]);
+ } /* if mode */
+ usb_max_devs++;
+ } /* if get info ok */
+ } /* if storage device */
+ if(usb_max_devs==USB_MAX_STOR_DEV) {
+ printf("max USB Storage Device reached: %d stopping\n",usb_max_devs);
+ break;
+ }
+ } /* for */
+ usb_disable_asynch(0); /* asynch transfer allowed */
+ if(usb_max_devs>0)
+ return 0;
+ else
+ return-1;
+}
+
+static int usb_stor_irq(struct usb_device *dev)
+{
+ struct us_data *us;
+ us=(struct us_data *)dev->privptr;
+
+ if(us->ip_wanted) {
+ us->ip_wanted=0;
+ }
+ return 0;
+}
+
+
+#ifdef USB_STOR_DEBUG
+
+static void usb_show_srb(ccb * pccb)
+{
+ int i;
+ printf("SRB: len %d datalen 0x%lX\n ",pccb->cmdlen,pccb->datalen);
+ for(i=0;i<12;i++) {
+ printf("%02X ",pccb->cmd[i]);
+ }
+ printf("\n");
+}
+
+static void display_int_status(unsigned long tmp)
+{
+ printf("Status: %s %s %s %s %s %s %s\n",
+ (tmp & USB_ST_ACTIVE) ? "Active" : "",
+ (tmp & USB_ST_STALLED) ? "Stalled" : "",
+ (tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "",
+ (tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "",
+ (tmp & USB_ST_NAK_REC) ? "NAKed" : "",
+ (tmp & USB_ST_CRC_ERR) ? "CRC Error" : "",
+ (tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : "");
+}
+#endif
+/***********************************************************************
+ * Data transfer routines
+ ***********************************************************************/
+
+static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length)
+{
+ int max_size;
+ int this_xfer;
+ int result;
+ int partial;
+ int maxtry;
+ int stat;
+
+ /* determine the maximum packet size for these transfers */
+ max_size = usb_maxpacket(us->pusb_dev, pipe) * 16;
+
+ /* while we have data left to transfer */
+ while (length) {
+
+ /* calculate how long this will be -- maximum or a remainder */
+ this_xfer = length > max_size ? max_size : length;
+ length -= this_xfer;
+
+ /* setup the retry counter */
+ maxtry = 10;
+
+ /* set up the transfer loop */
+ do {
+ /* transfer the data */
+ USB_STOR_PRINTF("Bulk xfer 0x%x(%d) try #%d\n",
+ (unsigned int)buf, this_xfer, 11 - maxtry);
+ result = usb_bulk_msg(us->pusb_dev, pipe, buf,
+ this_xfer, &partial, USB_CNTL_TIMEOUT*5);
+ USB_STOR_PRINTF("bulk_msg returned %d xferred %d/%d\n",
+ result, partial, this_xfer);
+ if(us->pusb_dev->status!=0) {
+ /* if we stall, we need to clear it before we go on */
+#ifdef USB_STOR_DEBUG
+ display_int_status(us->pusb_dev->status);
+#endif
+ if (us->pusb_dev->status & USB_ST_STALLED) {
+ USB_STOR_PRINTF("stalled ->clearing endpoint halt for pipe 0x%x\n", pipe);
+ stat = us->pusb_dev->status;
+ usb_clear_halt(us->pusb_dev, pipe);
+ us->pusb_dev->status=stat;
+ if(this_xfer == partial) {
+ USB_STOR_PRINTF("bulk transferred with error %X, but data ok\n",us->pusb_dev->status);
+ return 0;
+ }
+ else
+ return result;
+ }
+ if (us->pusb_dev->status & USB_ST_NAK_REC) {
+ USB_STOR_PRINTF("Device NAKed bulk_msg\n");
+ return result;
+ }
+ if(this_xfer == partial) {
+ USB_STOR_PRINTF("bulk transferred with error %d, but data ok\n",us->pusb_dev->status);
+ return 0;
+ }
+ /* if our try counter reaches 0, bail out */
+ USB_STOR_PRINTF("bulk transferred with error %d, data %d\n",us->pusb_dev->status,partial);
+ if (!maxtry--)
+ return result;
+ }
+ /* update to show what data was transferred */
+ this_xfer -= partial;
+ buf += partial;
+ /* continue until this transfer is done */
+ } while ( this_xfer );
+ }
+
+ /* if we get here, we're done and successful */
+ return 0;
+}
+
+/* FIXME: this reset function doesn't really reset the port, and it
+ * should. Actually it should probably do what it's doing here, and
+ * reset the port physically
+ */
+static int usb_stor_CB_reset(struct us_data *us)
+{
+ unsigned char cmd[12];
+ int result;
+
+ USB_STOR_PRINTF("CB_reset\n");
+ memset(cmd, 0xFF, sizeof(cmd));
+ cmd[0] = SCSI_SEND_DIAG;
+ cmd[1] = 4;
+ result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
+ US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0, us->ifnum, cmd, sizeof(cmd), USB_CNTL_TIMEOUT*5);
+
+ /* long wait for reset */
+ wait_ms(1500);
+ USB_STOR_PRINTF("CB_reset result %d: status %X clearing endpoint halt\n",result,us->pusb_dev->status);
+ usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_in));
+ usb_clear_halt(us->pusb_dev, usb_rcvbulkpipe(us->pusb_dev, us->ep_out));
+
+ USB_STOR_PRINTF("CB_reset done\n");
+ return 0;
+}
+
+/* FIXME: we also need a CBI_command which sets up the completion
+ * interrupt, and waits for it
+ */
+int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
+{
+ int result;
+ int dir_in,retry;
+ unsigned int pipe;
+ unsigned long status;
+
+ retry=5;
+ dir_in=US_DIRECTION(srb->cmd[0]);
+
+ if(dir_in)
+ pipe=usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
+ else
+ pipe=usb_sndbulkpipe(us->pusb_dev, us->ep_out);
+ while(retry--) {
+ USB_STOR_PRINTF("CBI gets a command: Try %d\n",5-retry);
+#ifdef USB_STOR_DEBUG
+ usb_show_srb(srb);
+#endif
+ /* let's send the command via the control pipe */
+ result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0),
+ US_CBI_ADSC, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0, us->ifnum,
+ srb->cmd, srb->cmdlen, USB_CNTL_TIMEOUT*5);
+ USB_STOR_PRINTF("CB_transport: control msg returned %d, status %X\n",result,us->pusb_dev->status);
+ /* check the return code for the command */
+ if (result < 0) {
+ if(us->pusb_dev->status & USB_ST_STALLED) {
+ status=us->pusb_dev->status;
+ USB_STOR_PRINTF(" stall during command found, clear pipe\n");
+ usb_clear_halt(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0));
+ us->pusb_dev->status=status;
+ }
+ USB_STOR_PRINTF(" error during command %02X Stat = %X\n",srb->cmd[0],us->pusb_dev->status);
+ return result;
+ }
+ /* transfer the data payload for this command, if one exists*/
+
+ USB_STOR_PRINTF("CB_transport: control msg returned %d, direction is %s to go 0x%lx\n",result,dir_in ? "IN" : "OUT",srb->datalen);
+ if (srb->datalen) {
+ result = us_one_transfer(us, pipe, srb->pdata,srb->datalen);
+ USB_STOR_PRINTF("CBI attempted to transfer data, result is %d status %lX, len %d\n", result,us->pusb_dev->status,us->pusb_dev->act_len);
+ if(!(us->pusb_dev->status & USB_ST_NAK_REC))
+ break;
+ } /* if (srb->datalen) */
+ else
+ break;
+ }
+ /* return result */
+
+ return result;
+}
+
+
+int usb_stor_CBI_get_status(ccb *srb, struct us_data *us)
+{
+ int timeout;
+
+ us->ip_wanted=1;
+ submit_int_msg(us->pusb_dev,us->irqpipe,
+ (void *)&us->ip_data,us->irqmaxp ,us->irqinterval);
+ timeout=1000;
+ while(timeout--) {
+ if((volatile int *)us->ip_wanted==0)
+ break;
+ wait_ms(10);
+ }
+ if (us->ip_wanted) {
+ printf(" Did not get interrupt on CBI\n");
+ us->ip_wanted = 0;
+ return USB_STOR_TRANSPORT_ERROR;
+ }
+ USB_STOR_PRINTF("Got interrupt data 0x%x, transfered %d status 0x%lX\n", us->ip_data,us->pusb_dev->irq_act_len,us->pusb_dev->irq_status);
+ /* UFI gives us ASC and ASCQ, like a request sense */
+ if (us->subclass == US_SC_UFI) {
+ if (srb->cmd[0] == SCSI_REQ_SENSE ||
+ srb->cmd[0] == SCSI_INQUIRY)
+ return USB_STOR_TRANSPORT_GOOD; /* Good */
+ else
+ if (us->ip_data)
+ return USB_STOR_TRANSPORT_FAILED;
+ else
+ return USB_STOR_TRANSPORT_GOOD;
+ }
+ /* otherwise, we interpret the data normally */
+ switch (us->ip_data) {
+ case 0x0001:
+ return USB_STOR_TRANSPORT_GOOD;
+ case 0x0002:
+ return USB_STOR_TRANSPORT_FAILED;
+ default:
+ return USB_STOR_TRANSPORT_ERROR;
+ } /* switch */
+ return USB_STOR_TRANSPORT_ERROR;
+}
+
+#define USB_TRANSPORT_UNKNOWN_RETRY 5
+#define USB_TRANSPORT_NOT_READY_RETRY 10
+
+int usb_stor_CB_transport(ccb *srb, struct us_data *us)
+{
+ int result,status;
+ ccb *psrb;
+ ccb reqsrb;
+ int retry,notready;
+
+ psrb=&reqsrb;
+ status=USB_STOR_TRANSPORT_GOOD;
+ retry=0;
+ notready=0;
+ /* issue the command */
+do_retry:
+ result=usb_stor_CB_comdat(srb,us);
+ USB_STOR_PRINTF("command / Data returned %d, status %X\n",result,us->pusb_dev->status);
+ /* if this is an CBI Protocol, get IRQ */
+ if(us->protocol==US_PR_CBI) {
+ status=usb_stor_CBI_get_status(srb,us);
+ /* if the status is error, report it */
+ if(status==USB_STOR_TRANSPORT_ERROR) {
+ USB_STOR_PRINTF(" USB CBI Command Error\n");
+ return status;
+ }
+ srb->sense_buf[12]=(unsigned char)(us->ip_data>>8);
+ srb->sense_buf[13]=(unsigned char)(us->ip_data&0xff);
+ if(!us->ip_data) {
+ /* if the status is good, report it */
+ if(status==USB_STOR_TRANSPORT_GOOD) {
+ USB_STOR_PRINTF(" USB CBI Command Good\n");
+ return status;
+ }
+ }
+ }
+ /* do we have to issue an auto request? */
+ /* HERE we have to check the result */
+ if((result<0) && !(us->pusb_dev->status & USB_ST_STALLED)) {
+ USB_STOR_PRINTF("ERROR %X\n",us->pusb_dev->status);
+ us->transport_reset(us);
+ return USB_STOR_TRANSPORT_ERROR;
+ }
+ if((us->protocol==US_PR_CBI) &&
+ ((srb->cmd[0]==SCSI_REQ_SENSE) ||
+ (srb->cmd[0]==SCSI_INQUIRY))) { /* do not issue an autorequest after request sense */
+ USB_STOR_PRINTF("No auto request and good\n");
+ return USB_STOR_TRANSPORT_GOOD;
+ }
+ /* issue an request_sense */
+ memset(&psrb->cmd[0],0,12);
+ psrb->cmd[0]=SCSI_REQ_SENSE;
+ psrb->cmd[1]=srb->lun<<5;
+ psrb->cmd[4]=18;
+ psrb->datalen=18;
+ psrb->pdata=&srb->sense_buf[0];
+ psrb->cmdlen=12;
+ /* issue the command */
+ result=usb_stor_CB_comdat(psrb,us);
+ USB_STOR_PRINTF("auto request returned %d\n",result);
+ /* if this is an CBI Protocol, get IRQ */
+ if(us->protocol==US_PR_CBI) {
+ status=usb_stor_CBI_get_status(psrb,us);
+ }
+ if((result<0)&&!(us->pusb_dev->status & USB_ST_STALLED)) {
+ USB_STOR_PRINTF(" AUTO REQUEST ERROR %d\n",us->pusb_dev->status);
+ return USB_STOR_TRANSPORT_ERROR;
+ }
+ USB_STOR_PRINTF("autorequest returned 0x%02X 0x%02X 0x%02X 0x%02X\n",srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
+ /* Check the auto request result */
+ if((srb->sense_buf[2]==0) &&
+ (srb->sense_buf[12]==0) &&
+ (srb->sense_buf[13]==0)) /* ok, no sense */
+ return USB_STOR_TRANSPORT_GOOD;
+ /* Check the auto request result */
+ switch(srb->sense_buf[2]) {
+ case 0x01: /* Recovered Error */
+ return USB_STOR_TRANSPORT_GOOD;
+ break;
+ case 0x02: /* Not Ready */
+ if(notready++ > USB_TRANSPORT_NOT_READY_RETRY) {
+ printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X (NOT READY)\n",
+ srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
+ return USB_STOR_TRANSPORT_FAILED;
+ }
+ else {
+ wait_ms(100);
+ goto do_retry;
+ }
+ break;
+ default:
+ if(retry++ > USB_TRANSPORT_UNKNOWN_RETRY) {
+ printf("cmd 0x%02X returned 0x%02X 0x%02X 0x%02X 0x%02X\n",
+ srb->cmd[0],srb->sense_buf[0],srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
+ return USB_STOR_TRANSPORT_FAILED;
+ }
+ else
+ goto do_retry;
+ break;
+ }
+ return USB_STOR_TRANSPORT_FAILED;
+}
+
+
+
+static int usb_inquiry(ccb *srb,struct us_data *ss)
+{
+ int retry,i;
+ retry=3;
+ do {
+ memset(&srb->cmd[0],0,12);
+ srb->cmd[0]=SCSI_INQUIRY;
+ srb->cmd[1]=srb->lun<<5;
+ srb->cmd[4]=36;
+ srb->datalen=36;
+ srb->cmdlen=12;
+ i=ss->transport(srb,ss);
+ USB_STOR_PRINTF("inquiry returns %d\n",i);
+ if(i==0)
+ break;
+ }while(retry--);
+ if(!retry) {
+ printf("error in inquiry\n");
+ return -1;
+ }
+ return 0;
+}
+
+static int usb_request_sense(ccb *srb,struct us_data *ss)
+{
+ char *ptr;
+ return 0;
+ ptr=srb->pdata;
+ memset(&srb->cmd[0],0,12);
+ srb->cmd[0]=SCSI_REQ_SENSE;
+ srb->cmd[1]=srb->lun<<5;
+ srb->cmd[4]=18;
+ srb->datalen=18;
+ srb->pdata=&srb->sense_buf[0];
+ srb->cmdlen=12;
+ ss->transport(srb,ss);
+ USB_STOR_PRINTF("Request Sense returned %02X %02X %02X\n",srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
+ srb->pdata=ptr;
+ return 0;
+}
+
+static int usb_test_unit_ready(ccb *srb,struct us_data *ss)
+{
+ int retries=10;
+ do {
+ memset(&srb->cmd[0],0,12);
+ srb->cmd[0]=SCSI_TST_U_RDY;
+ srb->cmd[1]=srb->lun<<5;
+ srb->datalen=0;
+ srb->cmdlen=12;
+ if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD)
+ {
+ return 0;
+ }
+ } while(retries--);
+ return -1;
+}
+
+static int usb_read_capacity(ccb *srb,struct us_data *ss)
+{
+ int retry;
+ retry=2; /* retries */
+ do {
+ memset(&srb->cmd[0],0,12);
+ srb->cmd[0]=SCSI_RD_CAPAC;
+ srb->cmd[1]=srb->lun<<5;
+ srb->datalen=8;
+ srb->cmdlen=12;
+ if(ss->transport(srb,ss)==USB_STOR_TRANSPORT_GOOD) {
+ return 0;
+ }
+ }while(retry--);
+ return -1;
+}
+
+static int usb_read_10(ccb *srb,struct us_data *ss, unsigned long start, unsigned short blocks)
+{
+ memset(&srb->cmd[0],0,12);
+ srb->cmd[0]=SCSI_READ10;
+ srb->cmd[1]=srb->lun<<5;
+ srb->cmd[2]=((unsigned char) (start>>24))&0xff;
+ srb->cmd[3]=((unsigned char) (start>>16))&0xff;
+ srb->cmd[4]=((unsigned char) (start>>8))&0xff;
+ srb->cmd[5]=((unsigned char) (start))&0xff;
+ srb->cmd[7]=((unsigned char) (blocks>>8))&0xff;
+ srb->cmd[8]=(unsigned char) blocks & 0xff;
+ srb->cmdlen=12;
+ USB_STOR_PRINTF("read10: start %lx blocks %x\n",start,blocks);
+ return ss->transport(srb,ss);
+}
+
+
+#define USB_MAX_READ_BLK 20
+
+unsigned long usb_stor_read(int device, unsigned long blknr, unsigned long blkcnt, unsigned long *buffer)
+{
+ unsigned long start,blks, buf_addr;
+ unsigned short smallblks;
+ struct usb_device *dev;
+ int retry,i;
+ ccb *srb=&usb_ccb;
+ device&=0xff;
+ /* Setup device
+ */
+ USB_STOR_PRINTF("\nusb_read: dev %d \n",device);
+ dev=NULL;
+ for(i=0;i<USB_MAX_DEVICE;i++) {
+ dev=usb_get_dev_index(i);
+ if(dev==NULL) {
+ return 0;
+ }
+ if(dev->devnum==usb_dev_desc[device].target)
+ break;
+ }
+
+ usb_disable_asynch(1); /* asynch transfer not allowed */
+ srb->lun=usb_dev_desc[device].lun;
+ buf_addr=(unsigned long)buffer;
+ start=blknr;
+ blks=blkcnt;
+ if(usb_test_unit_ready(srb,(struct us_data *)dev->privptr)) {
+ printf("Device NOT ready\n Request Sense returned %02X %02X %02X\n",
+ srb->sense_buf[2],srb->sense_buf[12],srb->sense_buf[13]);
+ return 0;
+ }
+ USB_STOR_PRINTF("\nusb_read: dev %d startblk %lx, blccnt %lx buffer %lx\n",device,start,blks, buf_addr);
+ do {
+ retry=2;
+ srb->pdata=(unsigned char *)buf_addr;
+ if(blks>USB_MAX_READ_BLK) {
+ smallblks=USB_MAX_READ_BLK;
+ }
+ else {
+ smallblks=(unsigned short) blks;
+ }
+retry_it:
+ if(smallblks==USB_MAX_READ_BLK)
+ usb_show_progress();
+ srb->datalen=usb_dev_desc[device].blksz * smallblks;
+ srb->pdata=(unsigned char *)buf_addr;
+ if(usb_read_10(srb,(struct us_data *)dev->privptr, start, smallblks)) {
+ USB_STOR_PRINTF("Read ERROR\n");
+ usb_request_sense(srb,(struct us_data *)dev->privptr);
+ if(retry--)
+ goto retry_it;
+ blkcnt-=blks;
+ break;
+ }
+ start+=smallblks;
+ blks-=smallblks;
+ buf_addr+=srb->datalen;
+ } while(blks!=0);
+ USB_STOR_PRINTF("usb_read: end startblk %lx, blccnt %x buffer %lx\n",start,smallblks,buf_addr);
+ usb_disable_asynch(0); /* asynch transfer allowed */
+ if(blkcnt>=USB_MAX_READ_BLK)
+ printf("\n");
+ return(blkcnt);
+}
+
+
+/* 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_descriptor *iface;
+ int i;
+ unsigned int flags = 0;
+
+ int protocol = 0;
+ int subclass = 0;
+
+
+ memset(ss, 0, sizeof(struct us_data));
+
+ /* let's examine the device now */
+ iface = &dev->config.if_desc[ifnum];
+
+#if 0
+ /* this is the place to patch some storage devices */
+ USB_STOR_PRINTF("iVendor %X iProduct %X\n",dev->descriptor.idVendor,dev->descriptor.idProduct);
+ if ((dev->descriptor.idVendor) == 0x066b && (dev->descriptor.idProduct) == 0x0103) {
+ USB_STOR_PRINTF("patched for E-USB\n");
+ protocol = US_PR_CB;
+ subclass = US_SC_UFI; /* an assumption */
+ }
+#endif
+
+ if (dev->descriptor.bDeviceClass != 0 ||
+ iface->bInterfaceClass != USB_CLASS_MASS_STORAGE ||
+ iface->bInterfaceSubClass < US_SC_MIN ||
+ iface->bInterfaceSubClass > US_SC_MAX) {
+ /* if it's not a mass storage, we go no further */
+ return 0;
+ }
+
+ /* At this point, we know we've got a live one */
+ USB_STOR_PRINTF("\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;
+
+ /* If the device has subclass and protocol, then use that. Otherwise,
+ * take data from the specific interface.
+ */
+ if (subclass) {
+ ss->subclass = subclass;
+ ss->protocol = protocol;
+ } else {
+ ss->subclass = iface->bInterfaceSubClass;
+ ss->protocol = iface->bInterfaceProtocol;
+ }
+
+ /* set the handler pointers based on the protocol */
+ USB_STOR_PRINTF("Transport: ");
+ switch (ss->protocol) {
+ case US_PR_CB:
+ USB_STOR_PRINTF("Control/Bulk\n");
+ ss->transport = usb_stor_CB_transport;
+ ss->transport_reset = usb_stor_CB_reset;
+ break;
+
+ case US_PR_CBI:
+ USB_STOR_PRINTF("Control/Bulk/Interrupt\n");
+ ss->transport = usb_stor_CB_transport;
+ ss->transport_reset = usb_stor_CB_reset;
+ break;
+ default:
+ printf("USB Starage 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->bNumEndpoints; i++) {
+ /* is it an BULK endpoint? */
+ if ((iface->ep_desc[i].bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_BULK) {
+ if (iface->ep_desc[i].bEndpointAddress & USB_DIR_IN)
+ ss->ep_in = iface->ep_desc[i].bEndpointAddress &
+ USB_ENDPOINT_NUMBER_MASK;
+ else
+ ss->ep_out = iface->ep_desc[i].bEndpointAddress &
+ USB_ENDPOINT_NUMBER_MASK;
+ }
+
+ /* is it an interrupt endpoint? */
+ if ((iface->ep_desc[i].bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_INT) {
+ ss->ep_int = iface->ep_desc[i].bEndpointAddress &
+ USB_ENDPOINT_NUMBER_MASK;
+ ss->irqinterval = iface->ep_desc[i].bInterval;
+ }
+ }
+ USB_STOR_PRINTF("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->bInterfaceNumber, 0) ||
+ !ss->ep_in || !ss->ep_out ||
+ (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
+ USB_STOR_PRINTF("Problems with device\n");
+ return 0;
+ }
+ /* set class specific stuff */
+ /* We only handle certain protocols. Currently, this is
+ * the only one.
+ */
+ if (ss->subclass != US_SC_UFI) {
+ 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;
+ dev->privptr=(void *)ss;
+ }
+ return 1;
+}
+
+int usb_stor_get_info(struct usb_device *dev,struct us_data *ss,block_dev_desc_t *dev_desc)
+{
+ unsigned char perq,modi;
+ unsigned long cap[2];
+ unsigned long *capacity,*blksz;
+ ccb *pccb=&usb_ccb;
+
+ ss->transport_reset(ss);
+ pccb->pdata=usb_stor_buf;
+
+ dev_desc->target=dev->devnum;
+ pccb->lun=dev_desc->lun;
+ USB_STOR_PRINTF(" address %d\n",dev_desc->target);
+
+ if(usb_inquiry(pccb,ss))
+ return -1;
+ perq=usb_stor_buf[0];
+ modi=usb_stor_buf[1];
+ if((perq & 0x1f)==0x1f) {
+ return 0; /* skip unknown devices */
+ }
+ if((modi&0x80)==0x80) {/* drive is removable */
+ dev_desc->removable=1;
+ }
+ memcpy(&dev_desc->vendor[0], &usb_stor_buf[8], 8);
+ memcpy(&dev_desc->product[0], &usb_stor_buf[16], 16);
+ memcpy(&dev_desc->revision[0], &usb_stor_buf[32], 4);
+ dev_desc->vendor[8]=0;
+ dev_desc->product[16]=0;
+ dev_desc->revision[4]=0;
+ USB_STOR_PRINTF("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 1;
+ }
+ else
+ return 0;
+ }
+ pccb->pdata=(unsigned char *)&cap[0];
+ memset(pccb->pdata,0,8);
+ if(usb_read_capacity(pccb,ss)!=0) {
+ printf("READ_CAP ERROR\n");
+ cap[0]=2880;
+ cap[1]=0x200;
+ }
+ USB_STOR_PRINTF("Read Capacity returns: 0x%lx, 0x%lx\n",cap[0],cap[1]);
+#if 0
+ if(cap[0]>(0x200000 * 10)) /* greater than 10 GByte */
+ cap[0]>>=16;
+#endif
+ cap[0]+=1;
+ capacity=&cap[0];
+ blksz=&cap[1];
+ USB_STOR_PRINTF("Capacity = 0x%lx, blocksz = 0x%lx\n",*capacity,*blksz);
+ dev_desc->lba=*capacity;
+ dev_desc->blksz=*blksz;
+ dev_desc->type=perq;
+ USB_STOR_PRINTF(" address %d\n",dev_desc->target);
+ USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
+
+ init_part(dev_desc);
+
+ USB_STOR_PRINTF("partype: %d\n",dev_desc->part_type);
+ return 1;
+}
+
+#endif
+#endif /* CONFIG_USB_STORAGE */
+
+
+