-/* Driver for SCM Microsystems USB-ATAPI cable
+/* Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable
*
* $Id: shuttle_usbat.c,v 1.17 2002/04/22 03:39:43 mdharm Exp $
*
static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us);
/*
- * Convenience function to produce an ATAPI read/write sectors command
+ * Convenience function to produce an ATA read/write sectors command
* Use cmd=0x20 for read, cmd=0x30 for write
*/
-static void usbat_pack_atapi_sector_cmd(unsigned char *buf,
+static void usbat_pack_ata_sector_cmd(unsigned char *buf,
unsigned char thistime,
u32 sector, unsigned char cmd)
{
if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_FAILED;
- if (*reply & 0x01 && *reply != 0x51) // error/check condition (0x51 is ok)
+ /* error/check condition (0x51 is ok) */
+ if (*reply & 0x01 && *reply != 0x51)
return USB_STOR_TRANSPORT_FAILED;
- if (*reply & 0x20) // device fault
+ /* device fault */
+ if (*reply & 0x20)
return USB_STOR_TRANSPORT_FAILED;
return USB_STOR_TRANSPORT_GOOD;
command[0] = 0x40;
command[1] = USBAT_CMD_SET_FEAT;
- // The only bit relevant to ATA access is bit 6
- // which defines 8 bit data access (set) or 16 bit (unset)
+ /*
+ * The only bit relevant to ATA access is bit 6
+ * which defines 8 bit data access (set) or 16 bit (unset)
+ */
command[2] = epp_control;
- // If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1,
- // ET1 and ET2 define an external event to be checked for on event of a
- // _read_blocks or _write_blocks operation. The read/write will not take
- // place unless the defined trigger signal is active.
+ /*
+ * If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1,
+ * ET1 and ET2 define an external event to be checked for on event of a
+ * _read_blocks or _write_blocks operation. The read/write will not take
+ * place unless the defined trigger signal is active.
+ */
command[3] = external_trigger;
- // The resultant byte of the mask operation (see mask_byte) is compared for
- // equivalence with this test pattern. If equal, the read/write will take
- // place.
+ /*
+ * The resultant byte of the mask operation (see mask_byte) is compared for
+ * equivalence with this test pattern. If equal, the read/write will take
+ * place.
+ */
command[4] = test_pattern;
- // This value is logically ANDed with the status register field specified
- // in the read/write command.
+ /*
+ * This value is logically ANDed with the status register field specified
+ * in the read/write command.
+ */
command[5] = mask_byte;
- // If ALQ is set in the qualifier, this field contains the address of the
- // registers where the byte count should be read for transferring the data.
- // If ALQ is not set, then this field contains the number of bytes to be
- // transferred.
+ /*
+ * If ALQ is set in the qualifier, this field contains the address of the
+ * registers where the byte count should be read for transferring the data.
+ * If ALQ is not set, then this field contains the number of bytes to be
+ * transferred.
+ */
command[6] = subcountL;
command[7] = subcountH;
if (result!=USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (*status & 0x01) { // check condition
+ if (*status & 0x01) { /* check condition */
result = usbat_read(us, USBAT_ATA, 0x10, status);
return USB_STOR_TRANSPORT_FAILED;
}
- if (*status & 0x20) // device fault
+ if (*status & 0x20) /* device fault */
return USB_STOR_TRANSPORT_FAILED;
- if ((*status & 0x80)==0x00) { // not busy
+ if ((*status & 0x80)==0x00) { /* not busy */
US_DEBUGP("Waited not busy for %d steps\n", i);
return USB_STOR_TRANSPORT_GOOD;
}
if (i<500)
- msleep(10); // 5 seconds
+ msleep(10); /* 5 seconds */
else if (i<700)
- msleep(50); // 10 seconds
+ msleep(50); /* 10 seconds */
else if (i<1200)
- msleep(100); // 50 seconds
+ msleep(100); /* 50 seconds */
else
- msleep(1000); // X minutes
+ msleep(1000); /* X minutes */
}
US_DEBUGP("Waited not busy for %d minutes, timing out.\n",
if (i==0) {
cmdlen = 16;
- // Write to multiple registers
- // Not really sure the 0x07, 0x17, 0xfc, 0xe7 is necessary here,
- // but that's what came out of the trace every single time.
+ /*
+ * Write to multiple registers
+ * Not really sure the 0x07, 0x17, 0xfc, 0xe7 is
+ * necessary here, but that's what came out of the
+ * trace every single time.
+ */
command[0] = 0x40;
command[1] = access | USBAT_CMD_WRITE_REGS;
command[2] = 0x07;
} else
cmdlen = 8;
- // Conditionally read or write blocks
+ /* Conditionally read or write blocks */
command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0);
command[cmdlen-7] = access |
(direction==DMA_TO_DEVICE ?
}
-
- //US_DEBUGP("Transfer %s %d bytes, sg buffers %d\n",
- // direction == DMA_TO_DEVICE ? "out" : "in",
- // len, use_sg);
-
result = usb_stor_bulk_transfer_sg(us,
pipe, content, len, use_sg, NULL);
if (result!=USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (*status & 0x01) // check condition
+ if (*status & 0x01) /* check condition */
return USB_STOR_TRANSPORT_FAILED;
- if (*status & 0x20) // device fault
+ if (*status & 0x20) /* device fault */
return USB_STOR_TRANSPORT_FAILED;
US_DEBUGP("Redoing %s\n",
BUG_ON(num_registers > US_IOBUF_SIZE/2);
- // Write to multiple registers, ATA access
+ /* Write to multiple registers, ATA access */
command[0] = 0x40;
command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS;
- // No relevance
+ /* No relevance */
command[2] = 0;
command[3] = 0;
command[4] = 0;
command[5] = 0;
- // Number of bytes to be transferred (incl. addresses and data)
+ /* Number of bytes to be transferred (incl. addresses and data) */
command[6] = LSB_of(num_registers*2);
command[7] = MSB_of(num_registers*2);
- // The setup command
+ /* The setup command */
result = usbat_execute_command(us, command, 8);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- // Create the reg/data, reg/data sequence
+ /* Create the reg/data, reg/data sequence */
for (i=0; i<num_registers; i++) {
data[i<<1] = registers[i];
data[1+(i<<1)] = data_out[i];
}
- // Send the data
+ /* Send the data */
result = usbat_bulk_write(us, data, num_registers*2);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK;
command[2] = USBAT_ATA_DATA;
command[3] = USBAT_ATA_STATUS;
- command[4] = 0xFD; // Timeout (ms);
+ command[4] = 0xFD; /* Timeout (ms); */
command[5] = USBAT_QUAL_FCQ;
command[6] = LSB_of(len);
command[7] = MSB_of(len);
- // Multiple block read setup command
+ /* Multiple block read setup command */
result = usbat_execute_command(us, command, 8);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_FAILED;
- // Read the blocks we just asked for
+ /* Read the blocks we just asked for */
result = usbat_bulk_read(us, buffer, len);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_FAILED;
command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK;
command[2] = USBAT_ATA_DATA;
command[3] = USBAT_ATA_STATUS;
- command[4] = 0xFD; // Timeout (ms)
+ command[4] = 0xFD; /* Timeout (ms) */
command[5] = USBAT_QUAL_FCQ;
command[6] = LSB_of(len);
command[7] = MSB_of(len);
- // Multiple block write setup command
+ /* Multiple block write setup command */
result = usbat_execute_command(us, command, 8);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_FAILED;
- // Write the data
+ /* Write the data */
result = usbat_bulk_write(us, buffer, len);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_FAILED;
{
int rc;
- // Reset peripheral, enable peripheral control signals
- // (bring reset signal up)
+ /*
+ * Reset peripheral, enable peripheral control signals
+ * (bring reset signal up)
+ */
rc = usbat_write_user_io(us,
USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0,
USBAT_UIO_EPAD | USBAT_UIO_1);
if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- // Enable peripheral control signals
- // (bring reset signal down)
+ /*
+ * Enable peripheral control signals
+ * (bring reset signal down)
+ */
rc = usbat_write_user_io(us,
USBAT_UIO_OE1 | USBAT_UIO_OE0,
USBAT_UIO_EPAD | USBAT_UIO_1);
{
int rc;
- // Enable peripheral control signals and card detect
+ /* Enable peripheral control signals and card detect */
rc = usbat_write_user_io(us,
USBAT_UIO_ACKD | USBAT_UIO_OE1 | USBAT_UIO_OE0,
USBAT_UIO_EPAD | USBAT_UIO_1);
if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- // Check for media existence
+ /* Check for media existence */
rc = usbat_flash_check_media_present(uio);
if (rc == USBAT_FLASH_MEDIA_NONE) {
info->sense_key = 0x02;
return USB_STOR_TRANSPORT_FAILED;
}
- // Check for media change
+ /* Check for media change */
rc = usbat_flash_check_media_changed(uio);
if (rc == USBAT_FLASH_MEDIA_CHANGED) {
- // Reset and re-enable card detect
+ /* Reset and re-enable card detect */
rc = usbat_device_reset(us);
if (rc != USB_STOR_TRANSPORT_GOOD)
return rc;
rc = usbat_device_reset(us);
if (rc != USB_STOR_TRANSPORT_GOOD)
return rc;
+ msleep(500);
/*
- * By examining the device signature after a reset, we can identify
- * whether the device supports the ATAPI packet interface.
- * The flash-devices do not support this, whereas the HP CDRW's obviously
- * do.
- *
- * This method is not ideal, but works because no other devices have been
- * produced based on the USBAT/USBAT02.
- *
- * Section 9.1 of the ATAPI-4 spec states (amongst other things) that
- * after a device reset, a Cylinder low of 0x14 indicates that the device
- * does support packet commands.
+ * In attempt to distinguish between HP CDRW's and Flash readers, we now
+ * execute the IDENTIFY PACKET DEVICE command. On ATA devices (i.e. flash
+ * readers), this command should fail with error. On ATAPI devices (i.e.
+ * CDROM drives), it should succeed.
*/
- rc = usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, &status);
- if (rc != USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
+ rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
- US_DEBUGP("usbat_identify_device: Cylinder low is %02X\n", status);
+ rc = usbat_get_status(us, &status);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
- if (status == 0x14) {
- // Device is HP 8200
+ /* Check for error bit, or if the command 'fell through' */
+ if (status == 0xA1 || !(status & 0x01)) {
+ /* Device is HP 8200 */
US_DEBUGP("usbat_identify_device: Detected HP8200 CDRW\n");
info->devicetype = USBAT_DEV_HP8200;
} else {
- // Device is a CompactFlash reader/writer
+ /* Device is a CompactFlash reader/writer */
US_DEBUGP("usbat_identify_device: Detected Flash reader/writer\n");
info->devicetype = USBAT_DEV_FLASH;
}
if (!reply)
return USB_STOR_TRANSPORT_ERROR;
- // ATAPI command : IDENTIFY DEVICE
+ /* ATA command : IDENTIFY DEVICE */
rc = usbat_multiple_write(us, registers, command, 3);
if (rc != USB_STOR_XFER_GOOD) {
US_DEBUGP("usbat_flash_get_sector_count: Gah! identify_device failed\n");
goto leave;
}
- // Read device status
+ /* Read device status */
if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) {
rc = USB_STOR_TRANSPORT_ERROR;
goto leave;
msleep(100);
- // Read the device identification data
+ /* Read the device identification data */
rc = usbat_read_block(us, reply, 512);
if (rc != USB_STOR_TRANSPORT_GOOD)
goto leave;
if (result != USB_STOR_TRANSPORT_GOOD)
return result;
- // we're working in LBA mode. according to the ATA spec,
- // we can support up to 28-bit addressing. I don't know if Jumpshot
- // supports beyond 24-bit addressing. It's kind of hard to test
- // since it requires > 8GB CF card.
+ /*
+ * we're working in LBA mode. according to the ATA spec,
+ * we can support up to 28-bit addressing. I don't know if Jumpshot
+ * supports beyond 24-bit addressing. It's kind of hard to test
+ * since it requires > 8GB CF card.
+ */
if (sector > 0x0FFFFFFF)
return USB_STOR_TRANSPORT_ERROR;
totallen = sectors * info->ssize;
- // Since we don't read more than 64 KB at a time, we have to create
- // a bounce buffer and move the data a piece at a time between the
- // bounce buffer and the actual transfer buffer.
+ /*
+ * Since we don't read more than 64 KB at a time, we have to create
+ * a bounce buffer and move the data a piece at a time between the
+ * bounce buffer and the actual transfer buffer.
+ */
alloclen = min(totallen, 65536u);
buffer = kmalloc(alloclen, GFP_NOIO);
return USB_STOR_TRANSPORT_ERROR;
do {
- // loop, never allocate or transfer more than 64k at once
- // (min(128k, 255*info->ssize) is the real limit)
+ /*
+ * loop, never allocate or transfer more than 64k at once
+ * (min(128k, 255*info->ssize) is the real limit)
+ */
len = min(totallen, alloclen);
thistime = (len / info->ssize) & 0xff;
- // ATAPI command 0x20 (READ SECTORS)
- usbat_pack_atapi_sector_cmd(command, thistime, sector, 0x20);
+ /* ATA command 0x20 (READ SECTORS) */
+ usbat_pack_ata_sector_cmd(command, thistime, sector, 0x20);
- // Write/execute ATAPI read command
+ /* Write/execute ATA read command */
result = usbat_multiple_write(us, registers, command, 7);
if (result != USB_STOR_TRANSPORT_GOOD)
goto leave;
- // Read the data we just requested
+ /* Read the data we just requested */
result = usbat_read_blocks(us, buffer, len);
if (result != USB_STOR_TRANSPORT_GOOD)
goto leave;
US_DEBUGP("usbat_flash_read_data: %d bytes\n", len);
- // Store the data in the transfer buffer
+ /* Store the data in the transfer buffer */
usb_stor_access_xfer_buf(buffer, len, us->srb,
&sg_idx, &sg_offset, TO_XFER_BUF);
if (result != USB_STOR_TRANSPORT_GOOD)
return result;
- // we're working in LBA mode. according to the ATA spec,
- // we can support up to 28-bit addressing. I don't know if Jumpshot
- // supports beyond 24-bit addressing. It's kind of hard to test
- // since it requires > 8GB CF card.
+ /*
+ * we're working in LBA mode. according to the ATA spec,
+ * we can support up to 28-bit addressing. I don't know if the device
+ * supports beyond 24-bit addressing. It's kind of hard to test
+ * since it requires > 8GB media.
+ */
if (sector > 0x0FFFFFFF)
return USB_STOR_TRANSPORT_ERROR;
totallen = sectors * info->ssize;
- // Since we don't write more than 64 KB at a time, we have to create
- // a bounce buffer and move the data a piece at a time between the
- // bounce buffer and the actual transfer buffer.
+ /*
+ * Since we don't write more than 64 KB at a time, we have to create
+ * a bounce buffer and move the data a piece at a time between the
+ * bounce buffer and the actual transfer buffer.
+ */
alloclen = min(totallen, 65536u);
buffer = kmalloc(alloclen, GFP_NOIO);
return USB_STOR_TRANSPORT_ERROR;
do {
- // loop, never allocate or transfer more than 64k at once
- // (min(128k, 255*info->ssize) is the real limit)
+ /*
+ * loop, never allocate or transfer more than 64k at once
+ * (min(128k, 255*info->ssize) is the real limit)
+ */
len = min(totallen, alloclen);
thistime = (len / info->ssize) & 0xff;
- // Get the data from the transfer buffer
+ /* Get the data from the transfer buffer */
usb_stor_access_xfer_buf(buffer, len, us->srb,
&sg_idx, &sg_offset, FROM_XFER_BUF);
- // ATAPI command 0x30 (WRITE SECTORS)
- usbat_pack_atapi_sector_cmd(command, thistime, sector, 0x30);
+ /* ATA command 0x30 (WRITE SECTORS) */
+ usbat_pack_ata_sector_cmd(command, thistime, sector, 0x30);
- // Write/execute ATAPI write command
+ /* Write/execute ATA write command */
result = usbat_multiple_write(us, registers, command, 7);
if (result != USB_STOR_TRANSPORT_GOOD)
goto leave;
- // Write the data
+ /* Write the data */
result = usbat_write_blocks(us, buffer, len);
if (result != USB_STOR_TRANSPORT_GOOD)
goto leave;
srb->transfersize);
}
- // Since we only read in one block at a time, we have to create
- // a bounce buffer and move the data a piece at a time between the
- // bounce buffer and the actual transfer buffer.
+ /*
+ * Since we only read in one block at a time, we have to create
+ * a bounce buffer and move the data a piece at a time between the
+ * bounce buffer and the actual transfer buffer.
+ */
len = (65535/srb->transfersize) * srb->transfersize;
US_DEBUGP("Max read is %d bytes\n", len);
len = min(len, srb->request_bufflen);
buffer = kmalloc(len, GFP_NOIO);
- if (buffer == NULL) // bloody hell!
+ if (buffer == NULL) /* bloody hell! */
return USB_STOR_TRANSPORT_FAILED;
sector = short_pack(data[7+3], data[7+2]);
sector <<= 16;
sector |= short_pack(data[7+5], data[7+4]);
transferred = 0;
- sg_segment = 0; // for keeping track of where we are in
- sg_offset = 0; // the scatter/gather list
+ sg_segment = 0; /* for keeping track of where we are in */
+ sg_offset = 0; /* the scatter/gather list */
while (transferred != srb->request_bufflen) {
if (len > srb->request_bufflen - transferred)
len = srb->request_bufflen - transferred;
- data[3] = len&0xFF; // (cylL) = expected length (L)
- data[4] = (len>>8)&0xFF; // (cylH) = expected length (H)
+ data[3] = len&0xFF; /* (cylL) = expected length (L) */
+ data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
- // Fix up the SCSI command sector and num sectors
+ /* Fix up the SCSI command sector and num sectors */
- data[7+2] = MSB_of(sector>>16); // SCSI command sector
+ data[7+2] = MSB_of(sector>>16); /* SCSI command sector */
data[7+3] = LSB_of(sector>>16);
data[7+4] = MSB_of(sector&0xFFFF);
data[7+5] = LSB_of(sector&0xFFFF);
if (data[7+0] == GPCMD_READ_CD)
data[7+6] = 0;
- data[7+7] = MSB_of(len / srb->transfersize); // SCSI command
- data[7+8] = LSB_of(len / srb->transfersize); // num sectors
+ data[7+7] = MSB_of(len / srb->transfersize); /* SCSI command */
+ data[7+8] = LSB_of(len / srb->transfersize); /* num sectors */
result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
registers, data, 19,
if (result != USB_STOR_TRANSPORT_GOOD)
break;
- // Store the data in the transfer buffer
+ /* Store the data in the transfer buffer */
usb_stor_access_xfer_buf(buffer, len, srb,
&sg_segment, &sg_offset, TO_XFER_BUF);
- // Update the amount transferred and the sector number
+ /* Update the amount transferred and the sector number */
transferred += len;
sector += len / srb->transfersize;
- } // while transferred != srb->request_bufflen
+ } /* while transferred != srb->request_bufflen */
kfree(buffer);
return result;
{
int selector;
unsigned char *status = us->iobuf;
- unsigned char max_selector = 0xB0;
- if (usbat_get_device_type(us) == USBAT_DEV_FLASH)
- max_selector = 0xA0;
-
- // try device = master, then device = slave.
- for (selector = 0xA0; selector <= max_selector; selector += 0x10) {
-
- if (usbat_get_device_type(us) == USBAT_DEV_HP8200 &&
- usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) !=
+ /* try device = master, then device = slave. */
+ for (selector = 0xA0; selector <= 0xB0; selector += 0x10) {
+ if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
unsigned char subcountL = USBAT_ATA_LBA_ME;
unsigned char *status = us->iobuf;
- us->extra = kmalloc(sizeof(struct usbat_info), GFP_NOIO);
+ us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO);
if (!us->extra) {
US_DEBUGP("init_usbat: Gah! Can't allocate storage for usbat info struct!\n");
return 1;
}
- memset(us->extra, 0, sizeof(struct usbat_info));
info = (struct usbat_info *) (us->extra);
- // Enable peripheral control signals
+ /* Enable peripheral control signals */
rc = usbat_write_user_io(us,
USBAT_UIO_OE1 | USBAT_UIO_OE0,
USBAT_UIO_EPAD | USBAT_UIO_1);
US_DEBUGP("INIT 3\n");
- // At this point, we need to detect which device we are using
- if (usbat_set_transport(us, info))
- return USB_STOR_TRANSPORT_ERROR;
-
- US_DEBUGP("INIT 4\n");
-
- if (usbat_get_device_type(us) == USBAT_DEV_HP8200) {
- msleep(250);
-
- // Write 0x80 to ISA port 0x3F
- rc = usbat_write(us, USBAT_ISA, 0x3F, 0x80);
- if (rc != USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
-
- US_DEBUGP("INIT 5\n");
-
- // Read ISA port 0x27
- rc = usbat_read(us, USBAT_ISA, 0x27, status);
- if (rc != USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
-
- US_DEBUGP("INIT 6\n");
-
- rc = usbat_read_user_io(us, status);
- if (rc != USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
-
- US_DEBUGP("INIT 7\n");
- }
-
rc = usbat_select_and_test_registers(us);
if (rc != USB_STOR_TRANSPORT_GOOD)
return rc;
- US_DEBUGP("INIT 8\n");
+ US_DEBUGP("INIT 4\n");
rc = usbat_read_user_io(us, status);
if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- US_DEBUGP("INIT 9\n");
+ US_DEBUGP("INIT 5\n");
- // Enable peripheral control signals and card detect
+ /* Enable peripheral control signals and card detect */
rc = usbat_device_enable_cdt(us);
if (rc != USB_STOR_TRANSPORT_GOOD)
return rc;
- US_DEBUGP("INIT 10\n");
+ US_DEBUGP("INIT 6\n");
rc = usbat_read_user_io(us, status);
if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- US_DEBUGP("INIT 11\n");
+ US_DEBUGP("INIT 7\n");
msleep(1400);
if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- US_DEBUGP("INIT 12\n");
+ US_DEBUGP("INIT 8\n");
rc = usbat_select_and_test_registers(us);
if (rc != USB_STOR_TRANSPORT_GOOD)
return rc;
- US_DEBUGP("INIT 13\n");
+ US_DEBUGP("INIT 9\n");
+
+ /* At this point, we need to detect which device we are using */
+ if (usbat_set_transport(us, info))
+ return USB_STOR_TRANSPORT_ERROR;
+
+ US_DEBUGP("INIT 10\n");
if (usbat_get_device_type(us) == USBAT_DEV_FLASH) {
subcountH = 0x02;
if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- US_DEBUGP("INIT 14\n");
+ US_DEBUGP("INIT 11\n");
return USB_STOR_TRANSPORT_GOOD;
}
data[0] = 0x00;
data[1] = 0x00;
data[2] = 0x00;
- data[3] = len&0xFF; // (cylL) = expected length (L)
- data[4] = (len>>8)&0xFF; // (cylH) = expected length (H)
- data[5] = 0xB0; // (device sel) = slave
- data[6] = 0xA0; // (command) = ATA PACKET COMMAND
+ data[3] = len&0xFF; /* (cylL) = expected length (L) */
+ data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
+ data[5] = 0xB0; /* (device sel) = slave */
+ data[6] = 0xA0; /* (command) = ATA PACKET COMMAND */
for (i=7; i<19; i++) {
registers[i] = 0x10;
return result;
}
- // Write the 12-byte command header.
-
- // If the command is BLANK then set the timer for 75 minutes.
- // Otherwise set it for 10 minutes.
-
- // NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW
- // AT SPEED 4 IS UNRELIABLE!!!
+ /*
+ * Write the 12-byte command header.
+ *
+ * If the command is BLANK then set the timer for 75 minutes.
+ * Otherwise set it for 10 minutes.
+ *
+ * NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW
+ * AT SPEED 4 IS UNRELIABLE!!!
+ */
if ( (result = usbat_write_block(us,
USBAT_ATA, srb->cmnd, 12,
return result;
}
- // If there is response data to be read in
- // then do it here.
+ /* If there is response data to be read in then do it here. */
if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) {
- // How many bytes to read in? Check cylL register
+ /* How many bytes to read in? Check cylL register */
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
USB_STOR_XFER_GOOD) {
return USB_STOR_TRANSPORT_ERROR;
}
- if (len > 0xFF) { // need to read cylH also
+ if (len > 0xFF) { /* need to read cylH also */
len = *status;
if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
USB_STOR_XFER_GOOD) {
if (rc != USB_STOR_TRANSPORT_GOOD)
return rc;
- info->ssize = 0x200; // hard coded 512 byte sectors as per ATA spec
+ /* hard coded 512 byte sectors as per ATA spec */
+ info->ssize = 0x200;
US_DEBUGP("usbat_flash_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n",
info->sectors, info->ssize);
- // build the reply
- // note: must return the sector number of the last sector,
- // *not* the total number of sectors
+ /*
+ * build the reply
+ * note: must return the sector number of the last sector,
+ * *not* the total number of sectors
+ */
((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
usb_stor_set_xfer_buf(ptr, 8, srb);
}
if (srb->cmnd[0] == READ_12) {
- // I don't think we'll ever see a READ_12 but support it anyway...
+ /*
+ * I don't think we'll ever see a READ_12 but support it anyway
+ */
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
}
if (srb->cmnd[0] == WRITE_12) {
- // I don't think we'll ever see a WRITE_12 but support it anyway...
+ /*
+ * I don't think we'll ever see a WRITE_12 but support it anyway
+ */
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
}
if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
- // sure. whatever. not like we can stop the user from popping
- // the media out of the device (no locking doors, etc)
+ /*
+ * sure. whatever. not like we can stop the user from popping
+ * the media out of the device (no locking doors, etc)
+ */
return USB_STOR_TRANSPORT_GOOD;
}
git://git.onelab.eu / linux-2.6.git / blobdiff