--- /dev/null
+/*
+ * Most of this source has been derived from the Linux USB
+ * project:
+ * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
+ * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org)
+ * (c) 1999 Michael Gee (michael@linuxspecific.com)
+ * (c) 2000 Yggdrasil Computing, Inc.
+ *
+ *
+ * Adapted for U-Boot:
+ * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
+ *
+ * For BBB support (C) Copyright 2003
+ * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
+ *
+ * BBB support based on /sys/dev/usb/umass.c from
+ * FreeBSD.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/* 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.
+ */
+
+
+#include <common.h>
+#include <command.h>
+#include <asm/byteorder.h>
+#include <asm/processor.h>
+
+#include <part.h>
+#include <usb.h>
+
+#undef BBB_COMDAT_TRACE
+#undef BBB_XPORT_TRACE
+
+#include <scsi.h>
+/* direction table -- this indicates the direction of the data
+ * transfer for each command code -- a 1 indicates input
+ */
+static const 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 ccb usb_ccb __attribute__((aligned(ARCH_DMA_MINALIGN)));
+
+/*
+ * 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;
+
+/* 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 *cb, struct us_data *data);
+typedef int (*trans_reset)(struct us_data *data);
+
+struct us_data {
+ struct usb_device *pusb_dev; /* this usb_device */
+
+ unsigned int flags; /* from filter initially */
+# define USB_READY (1 << 0)
+ 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 */
+};
+
+#ifdef CONFIG_USB_EHCI
+/*
+ * The U-Boot EHCI driver can handle any transfer length as long as there is
+ * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
+ * limited to 65535 blocks.
+ */
+#define USB_MAX_XFER_BLK 65535
+#else
+#define USB_MAX_XFER_BLK 20
+#endif
+
+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, lbaint_t blknr,
+ lbaint_t blkcnt, void *buffer);
+unsigned long usb_stor_write(int device, lbaint_t blknr,
+ lbaint_t blkcnt, const void *buffer);
+struct usb_device * usb_get_dev_index(int index);
+void uhci_show_temp_int_td(void);
+
+#ifdef CONFIG_PARTITIONS
+block_dev_desc_t *usb_stor_get_dev(int index)
+{
+ return (index < usb_max_devs) ? &usb_dev_desc[index] : NULL;
+}
+#endif
+
+static void usb_show_progress(void)
+{
+ debug(".");
+}
+
+/*******************************************************************************
+ * show info on storage devices; 'usb start/init' must be invoked earlier
+ * as we only retrieve structures populated during devices initialization
+ */
+int usb_stor_info(void)
+{
+ int i;
+
+ if (usb_max_devs > 0) {
+ for (i = 0; i < usb_max_devs; i++) {
+ printf(" Device %d: ", i);
+ dev_print(&usb_dev_desc[i]);
+ }
+ return 0;
+ }
+
+ printf("No storage devices, perhaps not 'usb start'ed..?\n");
+ return 1;
+}
+
+static unsigned int usb_get_max_lun(struct us_data *us)
+{
+ int len;
+ ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1);
+ len = usb_control_msg(us->pusb_dev,
+ usb_rcvctrlpipe(us->pusb_dev, 0),
+ US_BBB_GET_MAX_LUN,
+ USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN,
+ 0, us->ifnum,
+ result, sizeof(char),
+ USB_CNTL_TIMEOUT * 5);
+ debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result);
+ return (len > 0) ? *result : 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;
+ struct usb_device *dev;
+
+ if (mode == 1)
+ printf(" scanning usb for storage devices... ");
+
+ 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].if_type = IF_TYPE_USB;
+ usb_dev_desc[i].dev = i;
+ usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
+ usb_dev_desc[i].target = 0xff;
+ usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
+ usb_dev_desc[i].block_read = usb_stor_read;
+ usb_dev_desc[i].block_write = usb_stor_write;
+ }
+
+ usb_max_devs = 0;
+ for (i = 0; i < USB_MAX_DEVICE; i++) {
+ dev = usb_get_dev_index(i); /* get device */
+ debug("i=%d\n", i);
+ if (dev == NULL)
+ break; /* no more devices available */
+
+ if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) {
+ /* OK, it's a storage device. Iterate over its LUNs
+ * and populate `usb_dev_desc'.
+ */
+ int lun, max_lun, 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++) {
+ usb_dev_desc[usb_max_devs].lun = lun;
+ if (usb_stor_get_info(dev, &usb_stor[start],
+ &usb_dev_desc[usb_max_devs]) == 1) {
+ usb_max_devs++;
+ }
+ }
+ }
+ /* 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 */
+ printf("%d Storage Device(s) found\n", usb_max_devs);
+ if (usb_max_devs > 0)
+ return 0;
+ 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 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 */
+ debug("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);
+ debug("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 DEBUG
+ display_int_status(us->pusb_dev->status);
+#endif
+ if (us->pusb_dev->status & USB_ST_STALLED) {
+ debug("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) {
+ debug("bulk transferred" \
+ "with error %lX," \
+ " but data ok\n",
+ us->pusb_dev->status);
+ return 0;
+ }
+ else
+ return result;
+ }
+ if (us->pusb_dev->status & USB_ST_NAK_REC) {
+ debug("Device NAKed bulk_msg\n");
+ return result;
+ }
+ debug("bulk transferred with error");
+ if (this_xfer == partial) {
+ debug(" %ld, but data ok\n",
+ us->pusb_dev->status);
+ return 0;
+ }
+ /* if our try counter reaches 0, bail out */
+ debug(" %ld, 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.
+ */
+ debug("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, NULL, 0, USB_CNTL_TIMEOUT * 5);
+
+ if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) {
+ debug("RESET:stall\n");
+ return -1;
+ }
+
+ /* long wait for reset */
+ mdelay(150);
+ debug("BBB_reset result %d: status %lX 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 */
+ mdelay(150);
+ debug("BBB_reset result %d: status %lX 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);
+ mdelay(150);
+ debug("BBB_reset result %d: status %lX clearing OUT endpoint\n",
+ result, us->pusb_dev->status);
+ debug("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;
+
+ debug("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 */
+ mdelay(1500);
+ debug("CB_reset result %d: status %lX 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));
+
+ debug("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.
+ */
+static int usb_stor_BBB_comdat(ccb *srb, struct us_data *us)
+{
+ int result;
+ int actlen;
+ int dir_in;
+ unsigned int pipe;
+ ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_cbw_t, cbw, 1);
+
+ dir_in = US_DIRECTION(srb->cmd[0]);
+
+#ifdef BBB_COMDAT_TRACE
+ printf("dir %d lun %d cmdlen %d cmd %p datalen %lu 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)) {
+ debug("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 = cpu_to_le32(CBWSIGNATURE);
+ cbw->dCBWTag = cpu_to_le32(CBWTag++);
+ cbw->dCBWDataTransferLength = cpu_to_le32(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)
+ debug("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
+ */
+static int usb_stor_CB_comdat(ccb *srb, struct us_data *us)
+{
+ int result = 0;
+ 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--) {
+ debug("CBI gets a command: Try %d\n", 5 - retry);
+#ifdef 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);
+ debug("CB_transport: control msg returned %d, status %lX\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;
+ debug(" stall during command found," \
+ " clear pipe\n");
+ usb_clear_halt(us->pusb_dev,
+ usb_sndctrlpipe(us->pusb_dev, 0));
+ us->pusb_dev->status = status;
+ }
+ debug(" error during command %02X" \
+ " Stat = %lX\n", srb->cmd[0],
+ us->pusb_dev->status);
+ return result;
+ }
+ /* transfer the data payload for this command, if one exists*/
+
+ debug("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, (char *)srb->pdata,
+ srb->datalen);
+ debug("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;
+}
+
+
+static 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 == NULL)
+ break;
+ mdelay(10);
+ }
+ if (us->ip_wanted) {
+ printf(" Did not get interrupt on CBI\n");
+ us->ip_wanted = 0;
+ return USB_STOR_TRANSPORT_ERROR;
+ }
+ debug("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 */
+static 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, NULL, 0, USB_CNTL_TIMEOUT * 5);
+ return result;
+}
+
+static 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;
+ ALLOC_CACHE_ALIGN_BUFFER(umass_bbb_csw_t, csw, 1);
+#ifdef BBB_XPORT_TRACE
+ unsigned char *ptr;
+ int index;
+#endif
+
+ dir_in = US_DIRECTION(srb->cmd[0]);
+
+ /* COMMAND phase */
+ debug("COMMAND phase\n");
+ result = usb_stor_BBB_comdat(srb, us);
+ if (result < 0) {
+ debug("failed to send CBW status %ld\n",
+ us->pusb_dev->status);
+ usb_stor_BBB_reset(us);
+ return USB_STOR_TRANSPORT_FAILED;
+ }
+ if (!(us->flags & USB_READY))
+ mdelay(5);
+ pipein = usb_rcvbulkpipe(us->pusb_dev, us->ep_in);
+ pipeout = usb_sndbulkpipe(us->pusb_dev, us->ep_out);
+ /* DATA phase + error handling */
+ data_actlen = 0;
+ /* no data, go immediately to the STATUS phase */
+ if (srb->datalen == 0)
+ goto st;
+ debug("DATA phase\n");
+ 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)) {
+ debug("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) {
+ debug("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:
+ debug("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)) {
+ debug("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) {
+ debug("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 = le32_to_cpu(csw->dCSWDataResidue);
+ if (pipe == 0 && srb->datalen != 0 && srb->datalen - data_actlen != 0)
+ pipe = srb->datalen - data_actlen;
+ if (CSWSIGNATURE != le32_to_cpu(csw->dCSWSignature)) {
+ debug("!CSWSIGNATURE\n");
+ usb_stor_BBB_reset(us);
+ return USB_STOR_TRANSPORT_FAILED;
+ } else if ((CBWTag - 1) != le32_to_cpu(csw->dCSWTag)) {
+ debug("!Tag\n");
+ usb_stor_BBB_reset(us);
+ return USB_STOR_TRANSPORT_FAILED;
+ } else if (csw->bCSWStatus > CSWSTATUS_PHASE) {
+ debug(">PHASE\n");
+ usb_stor_BBB_reset(us);
+ return USB_STOR_TRANSPORT_FAILED;
+ } else if (csw->bCSWStatus == CSWSTATUS_PHASE) {
+ debug("=PHASE\n");
+ usb_stor_BBB_reset(us);
+ return USB_STOR_TRANSPORT_FAILED;
+ } else if (data_actlen > srb->datalen) {
+ debug("transferred %dB instead of %ldB\n",
+ data_actlen, srb->datalen);
+ return USB_STOR_TRANSPORT_FAILED;
+ } else if (csw->bCSWStatus == CSWSTATUS_FAILED) {
+ debug("FAILED\n");
+ return USB_STOR_TRANSPORT_FAILED;
+ }
+
+ return result;
+}
+
+static 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);
+ debug("command / Data returned %d, status %lX\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) {
+ debug(" 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) {
+ debug(" 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)) {
+ debug("ERROR %lX\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 */
+ debug("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);
+ debug("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)) {
+ debug(" AUTO REQUEST ERROR %ld\n",
+ us->pusb_dev->status);
+ return USB_STOR_TRANSPORT_ERROR;
+ }
+ debug("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 {
+ mdelay(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 = 5;
+ 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);
+ debug("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;
+
+ ptr = (char *)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);
+ debug("Request Sense returned %02X %02X %02X\n",
+ srb->sense_buf[2], srb->sense_buf[12],
+ srb->sense_buf[13]);
+ srb->pdata = (uchar *)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) {
+ ss->flags |= USB_READY;
+ return 0;
+ }
+ usb_request_sense(srb, ss);
+ /*
+ * Check the Key Code Qualifier, if it matches
+ * "Not Ready - medium not present"
+ * (the sense Key equals 0x2 and the ASC is 0x3a)
+ * return immediately as the medium being absent won't change
+ * unless there is a user action.
+ */
+ if ((srb->sense_buf[2] == 0x02) &&
+ (srb->sense_buf[12] == 0x3a))
+ return -1;
+ mdelay(100);
+ } while (retries--);
+
+ return -1;
+}
+
+static int usb_read_capacity(ccb *srb, struct us_data *ss)
+{
+ int retry;
+ /* XXX retries */
+ retry = 3;
+ 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;
+ debug("read10: start %lx blocks %x\n", start, blocks);
+ return ss->transport(srb, ss);
+}
+
+static int usb_write_10(ccb *srb, struct us_data *ss, unsigned long start,
+ unsigned short blocks)
+{
+ memset(&srb->cmd[0], 0, 12);
+ srb->cmd[0] = SCSI_WRITE10;
+ 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;
+ debug("write10: start %lx blocks %x\n", start, blocks);
+ return ss->transport(srb, ss);
+}
+
+
+#ifdef CONFIG_USB_BIN_FIXUP
+/*
+ * Some USB storage devices queried for SCSI identification data respond with
+ * binary strings, which if output to the console freeze the terminal. The
+ * workaround is to modify the vendor and product strings read from such
+ * device with proper values (as reported by 'usb info').
+ *
+ * Vendor and product length limits are taken from the definition of
+ * block_dev_desc_t in include/part.h.
+ */
+static void usb_bin_fixup(struct usb_device_descriptor descriptor,
+ unsigned char vendor[],
+ unsigned char product[]) {
+ const unsigned char max_vendor_len = 40;
+ const unsigned char max_product_len = 20;
+ if (descriptor.idVendor == 0x0424 && descriptor.idProduct == 0x223a) {
+ strncpy((char *)vendor, "SMSC", max_vendor_len);
+ strncpy((char *)product, "Flash Media Cntrller",
+ max_product_len);
+ }
+}
+#endif /* CONFIG_USB_BIN_FIXUP */
+
+unsigned long usb_stor_read(int device, lbaint_t blknr,
+ lbaint_t blkcnt, void *buffer)
+{
+ lbaint_t start, blks;
+ uintptr_t buf_addr;
+ unsigned short smallblks;
+ struct usb_device *dev;
+ struct us_data *ss;
+ int retry, i;
+ ccb *srb = &usb_ccb;
+
+ if (blkcnt == 0)
+ return 0;
+
+ device &= 0xff;
+ /* Setup device */
+ debug("\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;
+ }
+ ss = (struct us_data *)dev->privptr;
+
+ usb_disable_asynch(1); /* asynch transfer not allowed */
+ srb->lun = usb_dev_desc[device].lun;
+ buf_addr = (unsigned long)buffer;
+ start = blknr;
+ blks = blkcnt;
+
+ debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF
+ " buffer %lx\n", device, start, blks, buf_addr);
+
+ do {
+ /* XXX need some comment here */
+ retry = 2;
+ srb->pdata = (unsigned char *)buf_addr;
+ if (blks > USB_MAX_XFER_BLK)
+ smallblks = USB_MAX_XFER_BLK;
+ else
+ smallblks = (unsigned short) blks;
+retry_it:
+ if (smallblks == USB_MAX_XFER_BLK)
+ usb_show_progress();
+ srb->datalen = usb_dev_desc[device].blksz * smallblks;
+ srb->pdata = (unsigned char *)buf_addr;
+ if (usb_read_10(srb, ss, start, smallblks)) {
+ debug("Read ERROR\n");
+ 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;
+
+ debug("usb_read: end startblk " LBAF
+ ", blccnt %x buffer %lx\n",
+ start, smallblks, buf_addr);
+
+ usb_disable_asynch(0); /* asynch transfer allowed */
+ if (blkcnt >= USB_MAX_XFER_BLK)
+ debug("\n");
+ return blkcnt;
+}
+
+unsigned long usb_stor_write(int device, lbaint_t blknr,
+ lbaint_t blkcnt, const void *buffer)
+{
+ lbaint_t start, blks;
+ uintptr_t buf_addr;
+ unsigned short smallblks;
+ struct usb_device *dev;
+ struct us_data *ss;
+ int retry, i;
+ ccb *srb = &usb_ccb;
+
+ if (blkcnt == 0)
+ return 0;
+
+ device &= 0xff;
+ /* Setup device */
+ debug("\nusb_write: 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;
+ }
+ ss = (struct us_data *)dev->privptr;
+
+ usb_disable_asynch(1); /* asynch transfer not allowed */
+
+ srb->lun = usb_dev_desc[device].lun;
+ buf_addr = (unsigned long)buffer;
+ start = blknr;
+ blks = blkcnt;
+
+ debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF
+ " buffer %lx\n", device, start, blks, buf_addr);
+
+ do {
+ /* If write fails retry for max retry count else
+ * return with number of blocks written successfully.
+ */
+ retry = 2;
+ srb->pdata = (unsigned char *)buf_addr;
+ if (blks > USB_MAX_XFER_BLK)
+ smallblks = USB_MAX_XFER_BLK;
+ else
+ smallblks = (unsigned short) blks;
+retry_it:
+ if (smallblks == USB_MAX_XFER_BLK)
+ usb_show_progress();
+ srb->datalen = usb_dev_desc[device].blksz * smallblks;
+ srb->pdata = (unsigned char *)buf_addr;
+ if (usb_write_10(srb, ss, start, smallblks)) {
+ debug("Write ERROR\n");
+ 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;
+
+ debug("usb_write: end startblk " LBAF ", blccnt %x buffer %lx\n",
+ start, smallblks, buf_addr);
+
+ usb_disable_asynch(0); /* asynch transfer allowed */
+ if (blkcnt >= USB_MAX_XFER_BLK)
+ debug("\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 *iface;
+ int i;
+ struct usb_endpoint_descriptor *ep_desc;
+ unsigned int flags = 0;
+
+ int protocol = 0;
+ int subclass = 0;
+
+ /* let's examine the device now */
+ iface = &dev->config.if_desc[ifnum];
+
+#if 0
+ /* this is the place to patch some storage devices */
+ debug("iVendor %X iProduct %X\n", dev->descriptor.idVendor,
+ dev->descriptor.idProduct);
+
+ if ((dev->descriptor.idVendor) == 0x066b &&
+ (dev->descriptor.idProduct) == 0x0103) {
+ debug("patched for E-USB\n");
+ protocol = US_PR_CB;
+ subclass = US_SC_UFI; /* an assumption */
+ }
+#endif
+
+ if (dev->descriptor.bDeviceClass != 0 ||
+ iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE ||
+ iface->desc.bInterfaceSubClass < US_SC_MIN ||
+ iface->desc.bInterfaceSubClass > US_SC_MAX) {
+ /* if it's not a mass storage, we go no further */
+ return 0;
+ }
+
+ memset(ss, 0, sizeof(struct us_data));
+
+ /* 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;
+
+ /* 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->desc.bInterfaceSubClass;
+ ss->protocol = iface->desc.bInterfaceProtocol;
+ }
+
+ /* set the handler pointers based on the protocol */
+ debug("Transport: ");
+ switch (ss->protocol) {
+ case US_PR_CB:
+ debug("Control/Bulk\n");
+ ss->transport = usb_stor_CB_transport;
+ ss->transport_reset = usb_stor_CB_reset;
+ break;
+
+ case US_PR_CBI:
+ debug("Control/Bulk/Interrupt\n");
+ ss->transport = usb_stor_CB_transport;
+ ss->transport_reset = usb_stor_CB_reset;
+ break;
+ 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;
+ }
+ 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;
+ ALLOC_CACHE_ALIGN_BUFFER(unsigned long, cap, 2);
+ ALLOC_CACHE_ALIGN_BUFFER(unsigned char, usb_stor_buf, 36);
+ unsigned long *capacity, *blksz;
+ ccb *pccb = &usb_ccb;
+
+ 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))
+ return -1;
+
+ perq = usb_stor_buf[0];
+ modi = usb_stor_buf[1];
+
+ if ((perq & 0x1f) == 0x1f) {
+ /* skip unknown devices */
+ return 0;
+ }
+ if ((modi&0x80) == 0x80) {
+ /* drive is removable */
+ dev_desc->removable = 1;
+ }
+ memcpy(&dev_desc->vendor[0], (const void *) &usb_stor_buf[8], 8);
+ memcpy(&dev_desc->product[0], (const void *) &usb_stor_buf[16], 16);
+ memcpy(&dev_desc->revision[0], (const void *) &usb_stor_buf[32], 4);
+ dev_desc->vendor[8] = 0;
+ dev_desc->product[16] = 0;
+ dev_desc->revision[4] = 0;
+#ifdef CONFIG_USB_BIN_FIXUP
+ usb_bin_fixup(dev->descriptor, (uchar *)dev_desc->vendor,
+ (uchar *)dev_desc->product);
+#endif /* CONFIG_USB_BIN_FIXUP */
+ 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 1;
+ }
+ 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;
+ }
+ ss->flags &= ~USB_READY;
+ debug("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] = cpu_to_be32(cap[0]);
+ cap[1] = cpu_to_be32(cap[1]);
+
+ /* this assumes bigendian! */
+ cap[0] += 1;
+ capacity = &cap[0];
+ blksz = &cap[1];
+ debug("Capacity = 0x%lx, blocksz = 0x%lx\n", *capacity, *blksz);
+ dev_desc->lba = *capacity;
+ dev_desc->blksz = *blksz;
+ dev_desc->log2blksz = LOG2(dev_desc->blksz);
+ dev_desc->type = perq;
+ debug(" address %d\n", dev_desc->target);
+ debug("partype: %d\n", dev_desc->part_type);
+
+ init_part(dev_desc);
+
+ debug("partype: %d\n", dev_desc->part_type);
+ return 1;
+}
Code Review / kvmfornfv.git / blobdiff