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path: root/drivers/usb/gadget/file_storage.c
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Diffstat (limited to 'drivers/usb/gadget/file_storage.c')
-rw-r--r--drivers/usb/gadget/file_storage.c50
1 files changed, 24 insertions, 26 deletions
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 39ece40..59d9775 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -69,8 +69,7 @@
* each LUN would be settable independently as a disk drive or a CD-ROM
* drive, but currently all LUNs have to be the same type. The CD-ROM
* emulation includes a single data track and no audio tracks; hence there
- * need be only one backing file per LUN. Note also that the CD-ROM block
- * length is set to 512 rather than the more common value 2048.
+ * need be only one backing file per LUN.
*
* Requirements are modest; only a bulk-in and a bulk-out endpoint are
* needed (an interrupt-out endpoint is also needed for CBI). The memory
@@ -1158,7 +1157,7 @@ static int do_read(struct fsg_dev *fsg)
curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
return -EINVAL;
}
- file_offset = ((loff_t) lba) << 9;
+ file_offset = ((loff_t) lba) << curlun->blkbits;
/* Carry out the file reads */
amount_left = fsg->data_size_from_cmnd;
@@ -1196,7 +1195,7 @@ static int do_read(struct fsg_dev *fsg)
if (amount == 0) {
curlun->sense_data =
SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
- curlun->sense_data_info = file_offset >> 9;
+ curlun->sense_data_info = file_offset >> curlun->blkbits;
curlun->info_valid = 1;
bh->inreq->length = 0;
bh->state = BUF_STATE_FULL;
@@ -1221,7 +1220,7 @@ static int do_read(struct fsg_dev *fsg)
} else if (nread < amount) {
LDBG(curlun, "partial file read: %d/%u\n",
(int) nread, amount);
- nread -= (nread & 511); // Round down to a block
+ nread = round_down(nread, curlun->blksize);
}
file_offset += nread;
amount_left -= nread;
@@ -1232,7 +1231,7 @@ static int do_read(struct fsg_dev *fsg)
/* If an error occurred, report it and its position */
if (nread < amount) {
curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
- curlun->sense_data_info = file_offset >> 9;
+ curlun->sense_data_info = file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
@@ -1303,7 +1302,7 @@ static int do_write(struct fsg_dev *fsg)
/* Carry out the file writes */
get_some_more = 1;
- file_offset = usb_offset = ((loff_t) lba) << 9;
+ file_offset = usb_offset = ((loff_t) lba) << curlun->blkbits;
amount_left_to_req = amount_left_to_write = fsg->data_size_from_cmnd;
while (amount_left_to_write > 0) {
@@ -1333,11 +1332,11 @@ static int do_write(struct fsg_dev *fsg)
get_some_more = 0;
curlun->sense_data =
SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
- curlun->sense_data_info = usb_offset >> 9;
+ curlun->sense_data_info = usb_offset >> curlun->blkbits;
curlun->info_valid = 1;
continue;
}
- amount -= (amount & 511);
+ amount = round_down(amount, curlun->blksize);
if (amount == 0) {
/* Why were we were asked to transfer a
@@ -1376,7 +1375,7 @@ static int do_write(struct fsg_dev *fsg)
/* Did something go wrong with the transfer? */
if (bh->outreq->status != 0) {
curlun->sense_data = SS_COMMUNICATION_FAILURE;
- curlun->sense_data_info = file_offset >> 9;
+ curlun->sense_data_info = file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
@@ -1408,8 +1407,7 @@ static int do_write(struct fsg_dev *fsg)
} else if (nwritten < amount) {
LDBG(curlun, "partial file write: %d/%u\n",
(int) nwritten, amount);
- nwritten -= (nwritten & 511);
- // Round down to a block
+ nwritten = round_down(nwritten, curlun->blksize);
}
file_offset += nwritten;
amount_left_to_write -= nwritten;
@@ -1418,7 +1416,7 @@ static int do_write(struct fsg_dev *fsg)
/* If an error occurred, report it and its position */
if (nwritten < amount) {
curlun->sense_data = SS_WRITE_ERROR;
- curlun->sense_data_info = file_offset >> 9;
+ curlun->sense_data_info = file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
@@ -1500,8 +1498,8 @@ static int do_verify(struct fsg_dev *fsg)
return -EIO; // No default reply
/* Prepare to carry out the file verify */
- amount_left = verification_length << 9;
- file_offset = ((loff_t) lba) << 9;
+ amount_left = verification_length << curlun->blkbits;
+ file_offset = ((loff_t) lba) << curlun->blkbits;
/* Write out all the dirty buffers before invalidating them */
fsg_lun_fsync_sub(curlun);
@@ -1527,7 +1525,7 @@ static int do_verify(struct fsg_dev *fsg)
if (amount == 0) {
curlun->sense_data =
SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
- curlun->sense_data_info = file_offset >> 9;
+ curlun->sense_data_info = file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
@@ -1550,11 +1548,11 @@ static int do_verify(struct fsg_dev *fsg)
} else if (nread < amount) {
LDBG(curlun, "partial file verify: %d/%u\n",
(int) nread, amount);
- nread -= (nread & 511); // Round down to a sector
+ nread = round_down(nread, curlun->blksize);
}
if (nread == 0) {
curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
- curlun->sense_data_info = file_offset >> 9;
+ curlun->sense_data_info = file_offset >> curlun->blkbits;
curlun->info_valid = 1;
break;
}
@@ -1668,7 +1666,7 @@ static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh)
put_unaligned_be32(curlun->num_sectors - 1, &buf[0]);
/* Max logical block */
- put_unaligned_be32(512, &buf[4]); /* Block length */
+ put_unaligned_be32(curlun->blksize, &buf[4]); /* Block length */
return 8;
}
@@ -1890,7 +1888,7 @@ static int do_read_format_capacities(struct fsg_dev *fsg,
put_unaligned_be32(curlun->num_sectors, &buf[0]);
/* Number of blocks */
- put_unaligned_be32(512, &buf[4]); /* Block length */
+ put_unaligned_be32(curlun->blksize, &buf[4]); /* Block length */
buf[4] = 0x02; /* Current capacity */
return 12;
}
@@ -2415,7 +2413,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
case READ_6:
i = fsg->cmnd[4];
- fsg->data_size_from_cmnd = (i == 0 ? 256 : i) << 9;
+ fsg->data_size_from_cmnd = (i == 0 ? 256 : i) << fsg->curlun->blkbits;
if ((reply = check_command(fsg, 6, DATA_DIR_TO_HOST,
(7<<1) | (1<<4), 1,
"READ(6)")) == 0)
@@ -2424,7 +2422,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
case READ_10:
fsg->data_size_from_cmnd =
- get_unaligned_be16(&fsg->cmnd[7]) << 9;
+ get_unaligned_be16(&fsg->cmnd[7]) << fsg->curlun->blkbits;
if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
(1<<1) | (0xf<<2) | (3<<7), 1,
"READ(10)")) == 0)
@@ -2433,7 +2431,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
case READ_12:
fsg->data_size_from_cmnd =
- get_unaligned_be32(&fsg->cmnd[6]) << 9;
+ get_unaligned_be32(&fsg->cmnd[6]) << fsg->curlun->blkbits;
if ((reply = check_command(fsg, 12, DATA_DIR_TO_HOST,
(1<<1) | (0xf<<2) | (0xf<<6), 1,
"READ(12)")) == 0)
@@ -2519,7 +2517,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
case WRITE_6:
i = fsg->cmnd[4];
- fsg->data_size_from_cmnd = (i == 0 ? 256 : i) << 9;
+ fsg->data_size_from_cmnd = (i == 0 ? 256 : i) << fsg->curlun->blkbits;
if ((reply = check_command(fsg, 6, DATA_DIR_FROM_HOST,
(7<<1) | (1<<4), 1,
"WRITE(6)")) == 0)
@@ -2528,7 +2526,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
case WRITE_10:
fsg->data_size_from_cmnd =
- get_unaligned_be16(&fsg->cmnd[7]) << 9;
+ get_unaligned_be16(&fsg->cmnd[7]) << fsg->curlun->blkbits;
if ((reply = check_command(fsg, 10, DATA_DIR_FROM_HOST,
(1<<1) | (0xf<<2) | (3<<7), 1,
"WRITE(10)")) == 0)
@@ -2537,7 +2535,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
case WRITE_12:
fsg->data_size_from_cmnd =
- get_unaligned_be32(&fsg->cmnd[6]) << 9;
+ get_unaligned_be32(&fsg->cmnd[6]) << fsg->curlun->blkbits;
if ((reply = check_command(fsg, 12, DATA_DIR_FROM_HOST,
(1<<1) | (0xf<<2) | (0xf<<6), 1,
"WRITE(12)")) == 0)
generated by cgit v0.10.2 at 2024-09-14 09:56:43 (GMT)