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1563 lines
42 KiB
1563 lines
42 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Most of this source has been derived from the Linux USB |
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* project: |
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* (c) 1999-2002 Matthew Dharm ([email protected]) |
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* (c) 2000 David L. Brown, Jr. ([email protected]) |
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* (c) 1999 Michael Gee ([email protected]) |
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* (c) 2000 Yggdrasil Computing, Inc. |
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* |
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* |
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* Adapted for U-Boot: |
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* (C) Copyright 2001 Denis Peter, MPL AG Switzerland |
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* Driver model conversion: |
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* (C) Copyright 2015 Google, Inc |
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* |
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* For BBB support (C) Copyright 2003 |
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* Gary Jennejohn, DENX Software Engineering <[email protected]> |
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* |
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* BBB support based on /sys/dev/usb/umass.c from |
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* FreeBSD. |
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*/ |
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|
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/* Note: |
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* Currently only the CBI transport protocoll has been implemented, and it |
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* is only tested with a TEAC USB Floppy. Other Massstorages with CBI or CB |
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* transport protocoll may work as well. |
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*/ |
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/* |
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* New Note: |
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* Support for USB Mass Storage Devices (BBB) has been added. It has |
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* only been tested with USB memory sticks. |
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*/ |
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|
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#include <common.h> |
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#include <command.h> |
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#include <dm.h> |
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#include <errno.h> |
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#include <mapmem.h> |
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#include <memalign.h> |
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#include <asm/byteorder.h> |
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#include <asm/processor.h> |
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#include <dm/device-internal.h> |
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#include <dm/lists.h> |
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|
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#include <part.h> |
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#include <usb.h> |
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|
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#undef BBB_COMDAT_TRACE |
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#undef BBB_XPORT_TRACE |
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|
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#include <scsi.h> |
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/* direction table -- this indicates the direction of the data |
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* transfer for each command code -- a 1 indicates input |
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*/ |
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static const unsigned char us_direction[256/8] = { |
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0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, |
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0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
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}; |
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#define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1) |
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|
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static struct scsi_cmd usb_ccb __aligned(ARCH_DMA_MINALIGN); |
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static __u32 CBWTag; |
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|
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static int usb_max_devs; /* number of highest available usb device */ |
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|
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#ifndef CONFIG_BLK |
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static struct blk_desc usb_dev_desc[USB_MAX_STOR_DEV]; |
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#endif |
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struct us_data; |
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typedef int (*trans_cmnd)(struct scsi_cmd *cb, struct us_data *data); |
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typedef int (*trans_reset)(struct us_data *data); |
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|
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struct us_data { |
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struct usb_device *pusb_dev; /* this usb_device */ |
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|
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unsigned int flags; /* from filter initially */ |
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# define USB_READY (1 << 0) |
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unsigned char ifnum; /* interface number */ |
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unsigned char ep_in; /* in endpoint */ |
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unsigned char ep_out; /* out ....... */ |
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unsigned char ep_int; /* interrupt . */ |
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unsigned char subclass; /* as in overview */ |
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unsigned char protocol; /* .............. */ |
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unsigned char attention_done; /* force attn on first cmd */ |
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unsigned short ip_data; /* interrupt data */ |
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int action; /* what to do */ |
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int ip_wanted; /* needed */ |
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int *irq_handle; /* for USB int requests */ |
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unsigned int irqpipe; /* pipe for release_irq */ |
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unsigned char irqmaxp; /* max packed for irq Pipe */ |
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unsigned char irqinterval; /* Intervall for IRQ Pipe */ |
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struct scsi_cmd *srb; /* current srb */ |
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trans_reset transport_reset; /* reset routine */ |
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trans_cmnd transport; /* transport routine */ |
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unsigned short max_xfer_blk; /* maximum transfer blocks */ |
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}; |
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|
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#ifndef CONFIG_BLK |
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static struct us_data usb_stor[USB_MAX_STOR_DEV]; |
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#endif |
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|
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#define USB_STOR_TRANSPORT_GOOD 0 |
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#define USB_STOR_TRANSPORT_FAILED -1 |
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#define USB_STOR_TRANSPORT_ERROR -2 |
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|
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int usb_stor_get_info(struct usb_device *dev, struct us_data *us, |
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struct blk_desc *dev_desc); |
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int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, |
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struct us_data *ss); |
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#ifdef CONFIG_BLK |
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static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr, |
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lbaint_t blkcnt, void *buffer); |
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static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr, |
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lbaint_t blkcnt, const void *buffer); |
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#else |
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static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, |
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lbaint_t blkcnt, void *buffer); |
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static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, |
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lbaint_t blkcnt, const void *buffer); |
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#endif |
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void uhci_show_temp_int_td(void); |
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|
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static void usb_show_progress(void) |
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{ |
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debug("."); |
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} |
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|
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/******************************************************************************* |
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* show info on storage devices; 'usb start/init' must be invoked earlier |
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* as we only retrieve structures populated during devices initialization |
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*/ |
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int usb_stor_info(void) |
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{ |
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int count = 0; |
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#ifdef CONFIG_BLK |
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struct udevice *dev; |
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|
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for (blk_first_device(IF_TYPE_USB, &dev); |
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dev; |
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blk_next_device(&dev)) { |
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struct blk_desc *desc = dev_get_uclass_platdata(dev); |
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|
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printf(" Device %d: ", desc->devnum); |
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dev_print(desc); |
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count++; |
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} |
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#else |
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int i; |
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|
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if (usb_max_devs > 0) { |
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for (i = 0; i < usb_max_devs; i++) { |
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printf(" Device %d: ", i); |
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dev_print(&usb_dev_desc[i]); |
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} |
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return 0; |
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} |
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#endif |
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if (!count) { |
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printf("No storage devices, perhaps not 'usb start'ed..?\n"); |
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return 1; |
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} |
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|
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return 0; |
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} |
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|
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static unsigned int usb_get_max_lun(struct us_data *us) |
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{ |
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int len; |
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, result, 1); |
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len = usb_control_msg(us->pusb_dev, |
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usb_rcvctrlpipe(us->pusb_dev, 0), |
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US_BBB_GET_MAX_LUN, |
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USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, |
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0, us->ifnum, |
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result, sizeof(char), |
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USB_CNTL_TIMEOUT * 5); |
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debug("Get Max LUN -> len = %i, result = %i\n", len, (int) *result); |
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return (len > 0) ? *result : 0; |
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} |
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|
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static int usb_stor_probe_device(struct usb_device *udev) |
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{ |
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int lun, max_lun; |
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|
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#ifdef CONFIG_BLK |
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struct us_data *data; |
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int ret; |
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#else |
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int start; |
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|
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if (udev == NULL) |
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return -ENOENT; /* no more devices available */ |
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#endif |
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|
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debug("\n\nProbing for storage\n"); |
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#ifdef CONFIG_BLK |
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/* |
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* We store the us_data in the mass storage device's platdata. It |
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* is shared by all LUNs (block devices) attached to this mass storage |
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* device. |
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*/ |
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data = dev_get_platdata(udev->dev); |
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if (!usb_storage_probe(udev, 0, data)) |
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return 0; |
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max_lun = usb_get_max_lun(data); |
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for (lun = 0; lun <= max_lun; lun++) { |
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struct blk_desc *blkdev; |
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struct udevice *dev; |
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char str[10]; |
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|
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snprintf(str, sizeof(str), "lun%d", lun); |
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ret = blk_create_devicef(udev->dev, "usb_storage_blk", str, |
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IF_TYPE_USB, usb_max_devs, 512, 0, |
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&dev); |
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if (ret) { |
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debug("Cannot bind driver\n"); |
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return ret; |
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} |
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blkdev = dev_get_uclass_platdata(dev); |
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blkdev->target = 0xff; |
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blkdev->lun = lun; |
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|
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ret = usb_stor_get_info(udev, data, blkdev); |
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if (ret == 1) |
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ret = blk_prepare_device(dev); |
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if (!ret) { |
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usb_max_devs++; |
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debug("%s: Found device %p\n", __func__, udev); |
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} else { |
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debug("usb_stor_get_info: Invalid device\n"); |
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ret = device_unbind(dev); |
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if (ret) |
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return ret; |
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} |
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} |
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#else |
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/* We don't have space to even probe if we hit the maximum */ |
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if (usb_max_devs == USB_MAX_STOR_DEV) { |
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printf("max USB Storage Device reached: %d stopping\n", |
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usb_max_devs); |
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return -ENOSPC; |
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} |
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|
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if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs])) |
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return 0; |
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|
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/* |
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* OK, it's a storage device. Iterate over its LUNs and populate |
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* usb_dev_desc' |
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*/ |
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start = usb_max_devs; |
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|
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max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); |
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for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; |
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lun++) { |
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struct blk_desc *blkdev; |
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|
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blkdev = &usb_dev_desc[usb_max_devs]; |
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memset(blkdev, '\0', sizeof(struct blk_desc)); |
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blkdev->if_type = IF_TYPE_USB; |
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blkdev->devnum = usb_max_devs; |
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blkdev->part_type = PART_TYPE_UNKNOWN; |
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blkdev->target = 0xff; |
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blkdev->type = DEV_TYPE_UNKNOWN; |
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blkdev->block_read = usb_stor_read; |
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blkdev->block_write = usb_stor_write; |
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blkdev->lun = lun; |
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blkdev->priv = udev; |
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|
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if (usb_stor_get_info(udev, &usb_stor[start], |
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&usb_dev_desc[usb_max_devs]) == 1) { |
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debug("partype: %d\n", blkdev->part_type); |
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part_init(blkdev); |
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debug("partype: %d\n", blkdev->part_type); |
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usb_max_devs++; |
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debug("%s: Found device %p\n", __func__, udev); |
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} |
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} |
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#endif |
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return 0; |
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} |
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|
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void usb_stor_reset(void) |
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{ |
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usb_max_devs = 0; |
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} |
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|
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/******************************************************************************* |
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* scan the usb and reports device info |
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* to the user if mode = 1 |
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* returns current device or -1 if no |
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*/ |
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int usb_stor_scan(int mode) |
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{ |
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if (mode == 1) |
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printf(" scanning usb for storage devices... "); |
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|
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#ifndef CONFIG_DM_USB |
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unsigned char i; |
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|
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usb_disable_asynch(1); /* asynch transfer not allowed */ |
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usb_stor_reset(); |
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for (i = 0; i < USB_MAX_DEVICE; i++) { |
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struct usb_device *dev; |
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|
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dev = usb_get_dev_index(i); /* get device */ |
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debug("i=%d\n", i); |
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if (usb_stor_probe_device(dev)) |
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break; |
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} /* for */ |
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|
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usb_disable_asynch(0); /* asynch transfer allowed */ |
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#endif |
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printf("%d Storage Device(s) found\n", usb_max_devs); |
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if (usb_max_devs > 0) |
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return 0; |
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return -1; |
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} |
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|
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static int usb_stor_irq(struct usb_device *dev) |
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{ |
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struct us_data *us; |
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us = (struct us_data *)dev->privptr; |
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|
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if (us->ip_wanted) |
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us->ip_wanted = 0; |
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return 0; |
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} |
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#ifdef DEBUG |
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static void usb_show_srb(struct scsi_cmd *pccb) |
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{ |
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int i; |
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printf("SRB: len %d datalen 0x%lX\n ", pccb->cmdlen, pccb->datalen); |
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for (i = 0; i < 12; i++) |
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printf("%02X ", pccb->cmd[i]); |
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printf("\n"); |
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} |
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|
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static void display_int_status(unsigned long tmp) |
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{ |
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printf("Status: %s %s %s %s %s %s %s\n", |
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(tmp & USB_ST_ACTIVE) ? "Active" : "", |
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(tmp & USB_ST_STALLED) ? "Stalled" : "", |
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(tmp & USB_ST_BUF_ERR) ? "Buffer Error" : "", |
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(tmp & USB_ST_BABBLE_DET) ? "Babble Det" : "", |
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(tmp & USB_ST_NAK_REC) ? "NAKed" : "", |
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(tmp & USB_ST_CRC_ERR) ? "CRC Error" : "", |
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(tmp & USB_ST_BIT_ERR) ? "Bitstuff Error" : ""); |
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} |
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#endif |
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/*********************************************************************** |
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* Data transfer routines |
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***********************************************************************/ |
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|
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static int us_one_transfer(struct us_data *us, int pipe, char *buf, int length) |
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{ |
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int max_size; |
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int this_xfer; |
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int result; |
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int partial; |
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int maxtry; |
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int stat; |
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|
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/* determine the maximum packet size for these transfers */ |
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max_size = usb_maxpacket(us->pusb_dev, pipe) * 16; |
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|
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/* while we have data left to transfer */ |
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while (length) { |
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|
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/* calculate how long this will be -- maximum or a remainder */ |
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this_xfer = length > max_size ? max_size : length; |
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length -= this_xfer; |
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|
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/* setup the retry counter */ |
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maxtry = 10; |
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|
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/* set up the transfer loop */ |
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do { |
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/* transfer the data */ |
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debug("Bulk xfer 0x%lx(%d) try #%d\n", |
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(ulong)map_to_sysmem(buf), this_xfer, |
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11 - maxtry); |
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result = usb_bulk_msg(us->pusb_dev, pipe, buf, |
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this_xfer, &partial, |
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USB_CNTL_TIMEOUT * 5); |
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debug("bulk_msg returned %d xferred %d/%d\n", |
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result, partial, this_xfer); |
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if (us->pusb_dev->status != 0) { |
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/* if we stall, we need to clear it before |
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* we go on |
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*/ |
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#ifdef DEBUG |
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display_int_status(us->pusb_dev->status); |
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#endif |
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if (us->pusb_dev->status & USB_ST_STALLED) { |
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debug("stalled ->clearing endpoint" \ |
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"halt for pipe 0x%x\n", pipe); |
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stat = us->pusb_dev->status; |
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usb_clear_halt(us->pusb_dev, pipe); |
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us->pusb_dev->status = stat; |
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if (this_xfer == partial) { |
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debug("bulk transferred" \ |
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"with error %lX," \ |
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" but data ok\n", |
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us->pusb_dev->status); |
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return 0; |
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} |
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else |
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return result; |
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} |
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if (us->pusb_dev->status & USB_ST_NAK_REC) { |
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debug("Device NAKed bulk_msg\n"); |
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return result; |
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} |
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debug("bulk transferred with error"); |
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if (this_xfer == partial) { |
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debug(" %ld, but data ok\n", |
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us->pusb_dev->status); |
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return 0; |
|
} |
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/* if our try counter reaches 0, bail out */ |
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debug(" %ld, data %d\n", |
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us->pusb_dev->status, partial); |
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if (!maxtry--) |
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return result; |
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} |
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/* update to show what data was transferred */ |
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this_xfer -= partial; |
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buf += partial; |
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/* continue until this transfer is done */ |
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} while (this_xfer); |
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} |
|
|
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/* if we get here, we're done and successful */ |
|
return 0; |
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} |
|
|
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static int usb_stor_BBB_reset(struct us_data *us) |
|
{ |
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int result; |
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unsigned int pipe; |
|
|
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/* |
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* Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) |
|
* |
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* For Reset Recovery the host shall issue in the following order: |
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* a) a Bulk-Only Mass Storage Reset |
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* b) a Clear Feature HALT to the Bulk-In endpoint |
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* c) a Clear Feature HALT to the Bulk-Out endpoint |
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* |
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* This is done in 3 steps. |
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* |
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* If the reset doesn't succeed, the device should be port reset. |
|
* |
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* This comment stolen from FreeBSD's /sys/dev/usb/umass.c. |
|
*/ |
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debug("BBB_reset\n"); |
|
result = usb_control_msg(us->pusb_dev, usb_sndctrlpipe(us->pusb_dev, 0), |
|
US_BBB_RESET, |
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USB_TYPE_CLASS | USB_RECIP_INTERFACE, |
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0, us->ifnum, NULL, 0, USB_CNTL_TIMEOUT * 5); |
|
|
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if ((result < 0) && (us->pusb_dev->status & USB_ST_STALLED)) { |
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debug("RESET:stall\n"); |
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return -1; |
|
} |
|
|
|
/* long wait for reset */ |
|
mdelay(150); |
|
debug("BBB_reset result %d: status %lX reset\n", |
|
result, us->pusb_dev->status); |
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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(struct scsi_cmd *srb, struct us_data *us) |
|
{ |
|
int result; |
|
int actlen; |
|
int dir_in; |
|
unsigned int pipe; |
|
ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_cbw, 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(struct scsi_cmd *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(struct scsi_cmd *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 (us->ip_wanted == 0) |
|
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, transferred %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) |
|
{ |
|
/* ENDPOINT_HALT = 0, so set value to 0 */ |
|
return 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); |
|
} |
|
|
|
static int usb_stor_BBB_transport(struct scsi_cmd *srb, struct us_data *us) |
|
{ |
|
int result, retry; |
|
int dir_in; |
|
int actlen, data_actlen; |
|
unsigned int pipe, pipein, pipeout; |
|
ALLOC_CACHE_ALIGN_BUFFER(struct umass_bbb_csw, 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(struct scsi_cmd *srb, struct us_data *us) |
|
{ |
|
int result, status; |
|
struct scsi_cmd *psrb; |
|
struct scsi_cmd 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 void usb_stor_set_max_xfer_blk(struct usb_device *udev, |
|
struct us_data *us) |
|
{ |
|
unsigned short blk; |
|
size_t __maybe_unused size; |
|
int __maybe_unused ret; |
|
|
|
#ifndef CONFIG_DM_USB |
|
#ifdef CONFIG_USB_EHCI_HCD |
|
/* |
|
* 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. |
|
*/ |
|
blk = USHRT_MAX; |
|
#else |
|
blk = 20; |
|
#endif |
|
#else |
|
ret = usb_get_max_xfer_size(udev, (size_t *)&size); |
|
if (ret < 0) { |
|
/* unimplemented, let's use default 20 */ |
|
blk = 20; |
|
} else { |
|
if (size > USHRT_MAX * 512) |
|
size = USHRT_MAX * 512; |
|
blk = size / 512; |
|
} |
|
#endif |
|
|
|
us->max_xfer_blk = blk; |
|
} |
|
|
|
static int usb_inquiry(struct scsi_cmd *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(struct scsi_cmd *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(struct scsi_cmd *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(struct scsi_cmd *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(struct scsi_cmd *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(struct scsi_cmd *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 |
|
* struct blk_desc 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 */ |
|
|
|
#ifdef CONFIG_BLK |
|
static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr, |
|
lbaint_t blkcnt, void *buffer) |
|
#else |
|
static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, |
|
lbaint_t blkcnt, void *buffer) |
|
#endif |
|
{ |
|
lbaint_t start, blks; |
|
uintptr_t buf_addr; |
|
unsigned short smallblks; |
|
struct usb_device *udev; |
|
struct us_data *ss; |
|
int retry; |
|
struct scsi_cmd *srb = &usb_ccb; |
|
#ifdef CONFIG_BLK |
|
struct blk_desc *block_dev; |
|
#endif |
|
|
|
if (blkcnt == 0) |
|
return 0; |
|
/* Setup device */ |
|
#ifdef CONFIG_BLK |
|
block_dev = dev_get_uclass_platdata(dev); |
|
udev = dev_get_parent_priv(dev_get_parent(dev)); |
|
debug("\nusb_read: udev %d\n", block_dev->devnum); |
|
#else |
|
debug("\nusb_read: udev %d\n", block_dev->devnum); |
|
udev = usb_dev_desc[block_dev->devnum].priv; |
|
if (!udev) { |
|
debug("%s: No device\n", __func__); |
|
return 0; |
|
} |
|
#endif |
|
ss = (struct us_data *)udev->privptr; |
|
|
|
usb_disable_asynch(1); /* asynch transfer not allowed */ |
|
srb->lun = block_dev->lun; |
|
buf_addr = (uintptr_t)buffer; |
|
start = blknr; |
|
blks = blkcnt; |
|
|
|
debug("\nusb_read: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n", |
|
block_dev->devnum, start, blks, buf_addr); |
|
|
|
do { |
|
/* XXX need some comment here */ |
|
retry = 2; |
|
srb->pdata = (unsigned char *)buf_addr; |
|
if (blks > ss->max_xfer_blk) |
|
smallblks = ss->max_xfer_blk; |
|
else |
|
smallblks = (unsigned short) blks; |
|
retry_it: |
|
if (smallblks == ss->max_xfer_blk) |
|
usb_show_progress(); |
|
srb->datalen = block_dev->blksz * smallblks; |
|
srb->pdata = (unsigned char *)buf_addr; |
|
if (usb_read_10(srb, ss, start, smallblks)) { |
|
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 >= ss->max_xfer_blk) |
|
debug("\n"); |
|
return blkcnt; |
|
} |
|
|
|
#ifdef CONFIG_BLK |
|
static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr, |
|
lbaint_t blkcnt, const void *buffer) |
|
#else |
|
static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, |
|
lbaint_t blkcnt, const void *buffer) |
|
#endif |
|
{ |
|
lbaint_t start, blks; |
|
uintptr_t buf_addr; |
|
unsigned short smallblks; |
|
struct usb_device *udev; |
|
struct us_data *ss; |
|
int retry; |
|
struct scsi_cmd *srb = &usb_ccb; |
|
#ifdef CONFIG_BLK |
|
struct blk_desc *block_dev; |
|
#endif |
|
|
|
if (blkcnt == 0) |
|
return 0; |
|
|
|
/* Setup device */ |
|
#ifdef CONFIG_BLK |
|
block_dev = dev_get_uclass_platdata(dev); |
|
udev = dev_get_parent_priv(dev_get_parent(dev)); |
|
debug("\nusb_read: udev %d\n", block_dev->devnum); |
|
#else |
|
debug("\nusb_read: udev %d\n", block_dev->devnum); |
|
udev = usb_dev_desc[block_dev->devnum].priv; |
|
if (!udev) { |
|
debug("%s: No device\n", __func__); |
|
return 0; |
|
} |
|
#endif |
|
ss = (struct us_data *)udev->privptr; |
|
|
|
usb_disable_asynch(1); /* asynch transfer not allowed */ |
|
|
|
srb->lun = block_dev->lun; |
|
buf_addr = (uintptr_t)buffer; |
|
start = blknr; |
|
blks = blkcnt; |
|
|
|
debug("\nusb_write: dev %d startblk " LBAF ", blccnt " LBAF " buffer %lx\n", |
|
block_dev->devnum, 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 > ss->max_xfer_blk) |
|
smallblks = ss->max_xfer_blk; |
|
else |
|
smallblks = (unsigned short) blks; |
|
retry_it: |
|
if (smallblks == ss->max_xfer_blk) |
|
usb_show_progress(); |
|
srb->datalen = block_dev->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 >= ss->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; |
|
|
|
/* let's examine the device now */ |
|
iface = &dev->config.if_desc[ifnum]; |
|
|
|
if (dev->descriptor.bDeviceClass != 0 || |
|
iface->desc.bInterfaceClass != USB_CLASS_MASS_STORAGE || |
|
iface->desc.bInterfaceSubClass < US_SC_MIN || |
|
iface->desc.bInterfaceSubClass > US_SC_MAX) { |
|
debug("Not mass storage\n"); |
|
/* 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; |
|
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; |
|
} |
|
|
|
/* Set the maximum transfer size per host controller setting */ |
|
usb_stor_set_max_xfer_blk(dev, ss); |
|
|
|
dev->privptr = (void *)ss; |
|
return 1; |
|
} |
|
|
|
int usb_stor_get_info(struct usb_device *dev, struct us_data *ss, |
|
struct blk_desc *dev_desc) |
|
{ |
|
unsigned char perq, modi; |
|
ALLOC_CACHE_ALIGN_BUFFER(u32, cap, 2); |
|
ALLOC_CACHE_ALIGN_BUFFER(u8, usb_stor_buf, 36); |
|
u32 capacity, blksz; |
|
struct scsi_cmd *pccb = &usb_ccb; |
|
|
|
pccb->pdata = usb_stor_buf; |
|
|
|
dev_desc->target = dev->devnum; |
|
pccb->lun = dev_desc->lun; |
|
debug(" address %d\n", dev_desc->target); |
|
|
|
if (usb_inquiry(pccb, ss)) { |
|
debug("%s: usb_inquiry() failed\n", __func__); |
|
return -1; |
|
} |
|
|
|
perq = usb_stor_buf[0]; |
|
modi = usb_stor_buf[1]; |
|
|
|
/* |
|
* Skip unknown devices (0x1f) and enclosure service devices (0x0d), |
|
* they would not respond to test_unit_ready . |
|
*/ |
|
if (((perq & 0x1f) == 0x1f) || ((perq & 0x1f) == 0x0d)) { |
|
debug("%s: unknown/unsupported device\n", __func__); |
|
return 0; |
|
} |
|
if ((modi&0x80) == 0x80) { |
|
/* drive is removable */ |
|
dev_desc->removable = 1; |
|
} |
|
memcpy(dev_desc->vendor, (const void *)&usb_stor_buf[8], 8); |
|
memcpy(dev_desc->product, (const void *)&usb_stor_buf[16], 16); |
|
memcpy(dev_desc->revision, (const void *)&usb_stor_buf[32], 4); |
|
dev_desc->vendor[8] = 0; |
|
dev_desc->product[16] = 0; |
|
dev_desc->revision[4] = 0; |
|
#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 0; |
|
} |
|
pccb->pdata = (unsigned char *)cap; |
|
memset(pccb->pdata, 0, 8); |
|
if (usb_read_capacity(pccb, ss) != 0) { |
|
printf("READ_CAP ERROR\n"); |
|
cap[0] = 2880; |
|
cap[1] = 0x200; |
|
} |
|
ss->flags &= ~USB_READY; |
|
debug("Read Capacity returns: 0x%08x, 0x%08x\n", cap[0], cap[1]); |
|
#if 0 |
|
if (cap[0] > (0x200000 * 10)) /* greater than 10 GByte */ |
|
cap[0] >>= 16; |
|
|
|
cap[0] = cpu_to_be32(cap[0]); |
|
cap[1] = cpu_to_be32(cap[1]); |
|
#endif |
|
|
|
capacity = be32_to_cpu(cap[0]) + 1; |
|
blksz = be32_to_cpu(cap[1]); |
|
|
|
debug("Capacity = 0x%08x, blocksz = 0x%08x\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); |
|
|
|
return 1; |
|
} |
|
|
|
#ifdef CONFIG_DM_USB |
|
|
|
static int usb_mass_storage_probe(struct udevice *dev) |
|
{ |
|
struct usb_device *udev = dev_get_parent_priv(dev); |
|
int ret; |
|
|
|
usb_disable_asynch(1); /* asynch transfer not allowed */ |
|
ret = usb_stor_probe_device(udev); |
|
usb_disable_asynch(0); /* asynch transfer allowed */ |
|
|
|
return ret; |
|
} |
|
|
|
static const struct udevice_id usb_mass_storage_ids[] = { |
|
{ .compatible = "usb-mass-storage" }, |
|
{ } |
|
}; |
|
|
|
U_BOOT_DRIVER(usb_mass_storage) = { |
|
.name = "usb_mass_storage", |
|
.id = UCLASS_MASS_STORAGE, |
|
.of_match = usb_mass_storage_ids, |
|
.probe = usb_mass_storage_probe, |
|
#ifdef CONFIG_BLK |
|
.platdata_auto_alloc_size = sizeof(struct us_data), |
|
#endif |
|
}; |
|
|
|
UCLASS_DRIVER(usb_mass_storage) = { |
|
.id = UCLASS_MASS_STORAGE, |
|
.name = "usb_mass_storage", |
|
}; |
|
|
|
static const struct usb_device_id mass_storage_id_table[] = { |
|
{ |
|
.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS, |
|
.bInterfaceClass = USB_CLASS_MASS_STORAGE |
|
}, |
|
{ } /* Terminating entry */ |
|
}; |
|
|
|
U_BOOT_USB_DEVICE(usb_mass_storage, mass_storage_id_table); |
|
#endif |
|
|
|
#ifdef CONFIG_BLK |
|
static const struct blk_ops usb_storage_ops = { |
|
.read = usb_stor_read, |
|
.write = usb_stor_write, |
|
}; |
|
|
|
U_BOOT_DRIVER(usb_storage_blk) = { |
|
.name = "usb_storage_blk", |
|
.id = UCLASS_BLK, |
|
.ops = &usb_storage_ops, |
|
}; |
|
#else |
|
U_BOOT_LEGACY_BLK(usb) = { |
|
.if_typename = "usb", |
|
.if_type = IF_TYPE_USB, |
|
.max_devs = USB_MAX_STOR_DEV, |
|
.desc = usb_dev_desc, |
|
}; |
|
#endif
|
|
|