diff options
Diffstat (limited to 'roms/u-boot/common/usb_storage.c')
| -rw-r--r-- | roms/u-boot/common/usb_storage.c | 1570 |
1 files changed, 1570 insertions, 0 deletions
diff --git a/roms/u-boot/common/usb_storage.c b/roms/u-boot/common/usb_storage.c new file mode 100644 index 000000000..946c6b2b3 --- /dev/null +++ b/roms/u-boot/common/usb_storage.c @@ -0,0 +1,1570 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * 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 + * Driver model conversion: + * (C) Copyright 2015 Google, Inc + * + * 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. + */ + +/* 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 <blk.h> +#include <command.h> +#include <dm.h> +#include <errno.h> +#include <log.h> +#include <mapmem.h> +#include <memalign.h> +#include <asm/byteorder.h> +#include <asm/cache.h> +#include <asm/processor.h> +#include <dm/device-internal.h> +#include <dm/lists.h> +#include <linux/delay.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 struct scsi_cmd usb_ccb __aligned(ARCH_DMA_MINALIGN); +static __u32 CBWTag; + +static int usb_max_devs; /* number of highest available usb device */ + +#if !CONFIG_IS_ENABLED(BLK) +static struct blk_desc usb_dev_desc[USB_MAX_STOR_DEV]; +#endif + +struct us_data; +typedef int (*trans_cmnd)(struct scsi_cmd *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 */ + struct scsi_cmd *srb; /* current srb */ + trans_reset transport_reset; /* reset routine */ + trans_cmnd transport; /* transport routine */ + unsigned short max_xfer_blk; /* maximum transfer blocks */ +}; + +#if !CONFIG_IS_ENABLED(BLK) +static struct us_data usb_stor[USB_MAX_STOR_DEV]; +#endif + +#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, + struct blk_desc *dev_desc); +int usb_storage_probe(struct usb_device *dev, unsigned int ifnum, + struct us_data *ss); +#if CONFIG_IS_ENABLED(BLK) +static unsigned long usb_stor_read(struct udevice *dev, lbaint_t blknr, + lbaint_t blkcnt, void *buffer); +static unsigned long usb_stor_write(struct udevice *dev, lbaint_t blknr, + lbaint_t blkcnt, const void *buffer); +#else +static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, + lbaint_t blkcnt, void *buffer); +static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, + lbaint_t blkcnt, const void *buffer); +#endif +void uhci_show_temp_int_td(void); + +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 count = 0; +#if CONFIG_IS_ENABLED(BLK) + struct udevice *dev; + + for (blk_first_device(IF_TYPE_USB, &dev); + dev; + blk_next_device(&dev)) { + struct blk_desc *desc = dev_get_uclass_plat(dev); + + printf(" Device %d: ", desc->devnum); + dev_print(desc); + count++; + } +#else + 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; + } +#endif + if (!count) { + printf("No storage devices, perhaps not 'usb start'ed..?\n"); + return 1; + } + + return 0; +} + +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; +} + +static int usb_stor_probe_device(struct usb_device *udev) +{ + int lun, max_lun; + +#if CONFIG_IS_ENABLED(BLK) + struct us_data *data; + int ret; +#else + int start; + + if (udev == NULL) + return -ENOENT; /* no more devices available */ +#endif + + debug("\n\nProbing for storage\n"); +#if CONFIG_IS_ENABLED(BLK) + /* + * We store the us_data in the mass storage device's plat. It + * is shared by all LUNs (block devices) attached to this mass storage + * device. + */ + data = dev_get_plat(udev->dev); + if (!usb_storage_probe(udev, 0, data)) + return 0; + max_lun = usb_get_max_lun(data); + for (lun = 0; lun <= max_lun; lun++) { + struct blk_desc *blkdev; + struct udevice *dev; + char str[10]; + + snprintf(str, sizeof(str), "lun%d", lun); + ret = blk_create_devicef(udev->dev, "usb_storage_blk", str, + IF_TYPE_USB, usb_max_devs, 512, 0, + &dev); + if (ret) { + debug("Cannot bind driver\n"); + return ret; + } + + blkdev = dev_get_uclass_plat(dev); + blkdev->target = 0xff; + blkdev->lun = lun; + + ret = usb_stor_get_info(udev, data, blkdev); + if (ret == 1) { + usb_max_devs++; + debug("%s: Found device %p\n", __func__, udev); + } else { + debug("usb_stor_get_info: Invalid device\n"); + ret = device_unbind(dev); + if (ret) + return ret; + } + } +#else + /* We don't have space to even probe if we hit the maximum */ + if (usb_max_devs == USB_MAX_STOR_DEV) { + printf("max USB Storage Device reached: %d stopping\n", + usb_max_devs); + return -ENOSPC; + } + + if (!usb_storage_probe(udev, 0, &usb_stor[usb_max_devs])) + return 0; + + /* + * OK, it's a storage device. Iterate over its LUNs and populate + * usb_dev_desc' + */ + start = usb_max_devs; + + max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); + for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; + lun++) { + struct blk_desc *blkdev; + + blkdev = &usb_dev_desc[usb_max_devs]; + memset(blkdev, '\0', sizeof(struct blk_desc)); + blkdev->if_type = IF_TYPE_USB; + blkdev->devnum = usb_max_devs; + blkdev->part_type = PART_TYPE_UNKNOWN; + blkdev->target = 0xff; + blkdev->type = DEV_TYPE_UNKNOWN; + blkdev->block_read = usb_stor_read; + blkdev->block_write = usb_stor_write; + blkdev->lun = lun; + blkdev->priv = udev; + + if (usb_stor_get_info(udev, &usb_stor[start], + &usb_dev_desc[usb_max_devs]) == 1) { + debug("partype: %d\n", blkdev->part_type); + part_init(blkdev); + debug("partype: %d\n", blkdev->part_type); + usb_max_devs++; + debug("%s: Found device %p\n", __func__, udev); + } + } +#endif + + return 0; +} + +void usb_stor_reset(void) +{ + usb_max_devs = 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) +{ + if (mode == 1) + printf(" scanning usb for storage devices... "); + +#if !CONFIG_IS_ENABLED(DM_USB) + unsigned char i; + + usb_disable_asynch(1); /* asynch transfer not allowed */ + + usb_stor_reset(); + for (i = 0; i < USB_MAX_DEVICE; i++) { + struct usb_device *dev; + + dev = usb_get_dev_index(i); /* get device */ + debug("i=%d\n", i); + if (usb_stor_probe_device(dev)) + break; + } /* for */ + + usb_disable_asynch(0); /* asynch transfer allowed */ +#endif + 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(struct scsi_cmd *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%lx(%d) try #%d\n", + (ulong)map_to_sysmem(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(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; + usb_int_msg(us->pusb_dev, us->irqpipe, + (void *)&us->ip_data, us->irqmaxp, us->irqinterval, false); + 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) +{ + /* + * Limit the total size of a transfer to 120 KB. + * + * Some devices are known to choke with anything larger. It seems like + * the problem stems from the fact that original IDE controllers had + * only an 8-bit register to hold the number of sectors in one transfer + * and even those couldn't handle a full 256 sectors. + * + * Because we want to make sure we interoperate with as many devices as + * possible, we will maintain a 240 sector transfer size limit for USB + * Mass Storage devices. + * + * Tests show that other operating have similar limits with Microsoft + * Windows 7 limiting transfers to 128 sectors for both USB2 and USB3 + * and Apple Mac OS X 10.11 limiting transfers to 256 sectors for USB2 + * and 2048 for USB3 devices. + */ + unsigned short blk = 240; + +#if CONFIG_IS_ENABLED(DM_USB) + size_t size; + int ret; + + ret = usb_get_max_xfer_size(udev, (size_t *)&size); + if ((ret >= 0) && (size < blk * 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 */ + +#if CONFIG_IS_ENABLED(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; +#if CONFIG_IS_ENABLED(BLK) + struct blk_desc *block_dev; +#endif + + if (blkcnt == 0) + return 0; + /* Setup device */ +#if CONFIG_IS_ENABLED(BLK) + block_dev = dev_get_uclass_plat(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 */ + usb_lock_async(udev, 1); + 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"); + ss->flags &= ~USB_READY; + usb_request_sense(srb, ss); + if (retry--) + goto retry_it; + blkcnt -= blks; + break; + } + start += smallblks; + blks -= smallblks; + buf_addr += srb->datalen; + } while (blks != 0); + + debug("usb_read: end startblk " LBAF ", blccnt %x buffer %lx\n", + start, smallblks, buf_addr); + + usb_lock_async(udev, 0); + usb_disable_asynch(0); /* asynch transfer allowed */ + if (blkcnt >= ss->max_xfer_blk) + debug("\n"); + return blkcnt; +} + +#if CONFIG_IS_ENABLED(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; +#if CONFIG_IS_ENABLED(BLK) + struct blk_desc *block_dev; +#endif + + if (blkcnt == 0) + return 0; + + /* Setup device */ +#if CONFIG_IS_ENABLED(BLK) + block_dev = dev_get_uclass_plat(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 */ + usb_lock_async(udev, 1); + + 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"); + ss->flags &= ~USB_READY; + usb_request_sense(srb, ss); + if (retry--) + goto retry_it; + blkcnt -= blks; + break; + } + start += smallblks; + blks -= smallblks; + buf_addr += srb->datalen; + } while (blks != 0); + + debug("usb_write: end startblk " LBAF ", blccnt %x buffer %lx\n", + start, smallblks, buf_addr); + + usb_lock_async(udev, 0); + 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"); + ss->flags &= ~USB_READY; + cap[0] = 2880; + cap[1] = 0x200; + } + 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; +} + +#if CONFIG_IS_ENABLED(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, +#if CONFIG_IS_ENABLED(BLK) + .plat_auto = 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 + +#if CONFIG_IS_ENABLED(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 |