/* * (C) Copyright 2001 * Denis Peter, MPL AG Switzerland * * For BBB support (C) Copyright 2003 * Gary Jennejohn, DENX Software Engineering * * Most of this source has been derived from the Linux USB * project. BBB support based on /sys/dev/usb/umass.c from * FreeBSD. * * 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. */ /* * New Note: * Support for USB Mass Storage Devices (BBB) has been added. It has * only been tested with USB memory sticks. * Nota bene: if you are using the BBB support with a little-endian * CPU then you MUST define LITTLEENDIAN in the configuration file! */ #include #include #include #if (CONFIG_COMMANDS & CFG_CMD_USB) #include #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 /* 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 /* * BULK only */ #define US_BBB_RESET 0xff #define US_BBB_GET_MAX_LUN 0xfe /* Command Block Wrapper */ typedef struct { __u32 dCBWSignature; # define CBWSIGNATURE 0x43425355 __u32 dCBWTag; __u32 dCBWDataTransferLength; __u8 bCBWFlags; # define CBWFLAGS_OUT 0x00 # define CBWFLAGS_IN 0x80 __u8 bCBWLUN; __u8 bCDBLength; # define CBWCDBLENGTH 16 __u8 CBWCDB[CBWCDBLENGTH]; } umass_bbb_cbw_t; #define UMASS_BBB_CBW_SIZE 31 static __u32 CBWTag = 0; /* Command Status Wrapper */ typedef struct { __u32 dCSWSignature; # define CSWSIGNATURE 0x53425355 __u32 dCSWTag; __u32 dCSWDataResidue; __u8 bCSWStatus; # define CSWSTATUS_GOOD 0x0 # define CSWSTATUS_FAILED 0x1 # define CSWSTATUS_PHASE 0x2 } umass_bbb_csw_t; #define UMASS_BBB_CSW_SIZE 13 #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; /* GJ */ memset(usb_stor_buf, 0, sizeof(usb_stor_buf)); if(mode==1) { printf(" scanning bus for storage devices...\n"); } usb_disable_asynch(1); /* asynch transfer not allowed */ for(i=0;i0) 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; } static int usb_stor_BBB_reset(struct us_data *us) { int result; unsigned int pipe; /* * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) * * For Reset Recovery the host shall issue in the following order: * a) a Bulk-Only Mass Storage Reset * b) a Clear Feature HALT to the Bulk-In endpoint * c) a Clear Feature HALT to the Bulk-Out endpoint * * This is done in 3 steps. * * If the reset doesn't succeed, the device should be port reset. * * This comment stolen from FreeBSD's /sys/dev/usb/umass.c. */ USB_STOR_PRINTF("BBB_reset\n"); result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0), US_BBB_RESET, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, us->ifnum, 0, 0, USB_CNTL_TIMEOUT*5); if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { USB_STOR_PRINTF("RESET:stall\n"); return -1; } /* long wait for reset */ wait_ms(150); USB_STOR_PRINTF("BBB_reset result %d: status %X reset\n",result,us->pusb_dev->status); pipe = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); result = usb_clear_halt(us->pusb_dev, pipe); /* long wait for reset */ wait_ms(150); USB_STOR_PRINTF("BBB_reset result %d: status %X clearing IN endpoint\n",result,us->pusb_dev->status); /* long wait for reset */ pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); result = usb_clear_halt(us->pusb_dev, pipe); wait_ms(150); USB_STOR_PRINTF("BBB_reset result %d: status %X clearing OUT endpoint\n",result,us->pusb_dev->status); USB_STOR_PRINTF("BBB_reset done\n"); 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; } /* * Set up the command for a BBB device. Note that the actual SCSI * command is copied into cbw.CBWCDB. */ int usb_stor_BBB_comdat(ccb *srb, struct us_data *us) { int result; int actlen; int dir_in; unsigned int pipe; umass_bbb_cbw_t cbw; dir_in = US_DIRECTION(srb->cmd[0]); #ifdef BBB_COMDAT_TRACE printf("dir %d lun %d cmdlen %d cmd %p datalen %d pdata %p\n", dir_in, srb->lun, srb->cmdlen, srb->cmd, srb->datalen, srb->pdata); if (srb->cmdlen) { for(result = 0;result < srb->cmdlen;result++) printf("cmd[%d] %#x ", result, srb->cmd[result]); printf("\n"); } #endif /* sanity checks */ if (!(srb->cmdlen <= CBWCDBLENGTH)) { USB_STOR_PRINTF("usb_stor_BBB_comdat:cmdlen too large\n"); return -1; } /* always OUT to the ep */ pipe = usb_sndbulkpipe(us->pusb_dev, us->ep_out); cbw.dCBWSignature = swap_32(CBWSIGNATURE); cbw.dCBWTag = swap_32(CBWTag++); cbw.dCBWDataTransferLength = swap_32(srb->datalen); cbw.bCBWFlags = (dir_in? CBWFLAGS_IN : CBWFLAGS_OUT); cbw.bCBWLUN = srb->lun; cbw.bCDBLength = srb->cmdlen; /* copy the command data into the CBW command data buffer */ /* DST SRC LEN!!! */ memcpy(cbw.CBWCDB, srb->cmd, srb->cmdlen); result = usb_bulk_msg(us->pusb_dev, pipe, &cbw, UMASS_BBB_CBW_SIZE, &actlen, USB_CNTL_TIMEOUT*5); if (result < 0) USB_STOR_PRINTF("usb_stor_BBB_comdat:usb_bulk_msg error\n"); return result; } /* 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 /* clear a stall on an endpoint - special for BBB devices */ int usb_stor_BBB_clear_endpt_stall(struct us_data *us, __u8 endpt) { int result; /* ENDPOINT_HALT = 0, so set value to 0 */ result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev,0), USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, endpt, 0, 0, USB_CNTL_TIMEOUT*5); return result; } int usb_stor_BBB_transport(ccb *srb, struct us_data *us) { int result, retry; int dir_in; int actlen, data_actlen; unsigned int pipe, pipein, pipeout; umass_bbb_csw_t csw; #ifdef BBB_XPORT_TRACE unsigned char *ptr; int index; #endif dir_in = US_DIRECTION(srb->cmd[0]); /* COMMAND phase */ USB_STOR_PRINTF("COMMAND phase\n"); result = usb_stor_BBB_comdat(srb, us); if (result < 0) { USB_STOR_PRINTF("failed to send CBW status %ld\n", us->pusb_dev->status); usb_stor_BBB_reset(us); return USB_STOR_TRANSPORT_FAILED; } wait_ms(5); pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in); pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out); /* DATA phase + error handling */ USB_STOR_PRINTF("DATA phase\n"); data_actlen = 0; /* no data, go immediately to the STATUS phase */ if (srb->datalen == 0) goto st; if (dir_in) pipe = pipein; else pipe = pipeout; result = usb_bulk_msg(us->pusb_dev, pipe, srb->pdata, srb->datalen, &data_actlen, USB_CNTL_TIMEOUT*5); /* special handling of STALL in DATA phase */ if((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { USB_STOR_PRINTF("DATA:stall\n"); /* clear the STALL on the endpoint */ result = usb_stor_BBB_clear_endpt_stall(us, dir_in? us->ep_in : us->ep_out); if (result >= 0) /* continue on to STATUS phase */ goto st; } if (result < 0) { USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", us->pusb_dev->status); usb_stor_BBB_reset(us); return USB_STOR_TRANSPORT_FAILED; } #ifdef BBB_XPORT_TRACE for (index = 0; index < data_actlen; index++) printf("pdata[%d] %#x ", index, srb->pdata[index]); printf("\n"); #endif /* STATUS phase + error handling */ st: retry = 0; again: USB_STOR_PRINTF("STATUS phase\n"); result = usb_bulk_msg(us->pusb_dev, pipein, &csw, UMASS_BBB_CSW_SIZE, &actlen, USB_CNTL_TIMEOUT*5); /* special handling of STALL in STATUS phase */ if((result < 0) && (retry < 1) && (us->pusb_dev->status & USB_ST_STALLED)) { USB_STOR_PRINTF("STATUS:stall\n"); /* clear the STALL on the endpoint */ result = usb_stor_BBB_clear_endpt_stall(us, us->ep_in); if (result >= 0 && (retry++ < 1)) /* do a retry */ goto again; } if (result < 0) { USB_STOR_PRINTF("usb_bulk_msg error status %ld\n", us->pusb_dev->status); usb_stor_BBB_reset(us); return USB_STOR_TRANSPORT_FAILED; } #ifdef BBB_XPORT_TRACE ptr = (unsigned char *)&csw; for (index = 0; index < UMASS_BBB_CSW_SIZE; index++) printf("ptr[%d] %#x ", index, ptr[index]); printf("\n"); #endif /* misuse pipe to get the residue */ pipe = swap_32(csw.dCSWDataResidue); if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0) pipe = srb->datalen - data_actlen; if (CSWSIGNATURE != swap_32(csw.dCSWSignature)) { USB_STOR_PRINTF("!CSWSIGNATURE\n"); usb_stor_BBB_reset(us); return USB_STOR_TRANSPORT_FAILED; } else if ((CBWTag - 1) != swap_32(csw.dCSWTag)) { USB_STOR_PRINTF("!Tag\n"); usb_stor_BBB_reset(us); return USB_STOR_TRANSPORT_FAILED; } else if (csw.bCSWStatus > CSWSTATUS_PHASE) { USB_STOR_PRINTF(">PHASE\n"); usb_stor_BBB_reset(us); return USB_STOR_TRANSPORT_FAILED; } else if (csw.bCSWStatus == CSWSTATUS_PHASE) { USB_STOR_PRINTF("=PHASE\n"); usb_stor_BBB_reset(us); return USB_STOR_TRANSPORT_FAILED; } else if (data_actlen > srb->datalen) { USB_STOR_PRINTF("transferred %dB instead of %dB\n", data_actlen, srb->datalen); return USB_STOR_TRANSPORT_FAILED; } else if (csw.bCSWStatus == CSWSTATUS_FAILED) { USB_STOR_PRINTF("FAILED\n"); return USB_STOR_TRANSPORT_FAILED; } return result; } 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;idevnum==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; case US_PR_BULK: USB_STOR_PRINTF("Bulk/Bulk/Bulk\n"); ss->transport = usb_stor_BBB_transport; ss->transport_reset = usb_stor_BBB_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, these are * the only ones. */ if (ss->subclass != US_SC_UFI && ss->subclass != US_SC_SCSI) { 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 #ifdef LITTLEENDIAN cap[0] = ((unsigned long)( (((unsigned long)(cap[0]) & (unsigned long)0x000000ffUL) << 24) | (((unsigned long)(cap[0]) & (unsigned long)0x0000ff00UL) << 8) | (((unsigned long)(cap[0]) & (unsigned long)0x00ff0000UL) >> 8) | (((unsigned long)(cap[0]) & (unsigned long)0xff000000UL) >> 24) )); cap[1] = ((unsigned long)( (((unsigned long)(cap[1]) & (unsigned long)0x000000ffUL) << 24) | (((unsigned long)(cap[1]) & (unsigned long)0x0000ff00UL) << 8) | (((unsigned long)(cap[1]) & (unsigned long)0x00ff0000UL) >> 8) | (((unsigned long)(cap[1]) & (unsigned long)0xff000000UL) >> 24) )); #endif /* this assumes bigendian! */ 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 /* CONFIG_USB_STORAGE */ #endif /* CFG_CMD_USB */