[PATCH] usb-storage: Some minor shuttle_usbat cleanups (b7b1e655) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/usb/storage/shuttle_usbat.c

+172 −134

Original line number	Diff line number	Diff line
		/* 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 $
		*
		@@ -67,10 +67,10 @@ static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us);
		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)
		{
		@@ -196,10 +196,12 @@ static int usbat_check_status(struct us_data *us)
		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;
		@@ -222,29 +224,39 @@ static int usbat_set_shuttle_features(struct us_data *us,
		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;

		@@ -273,26 +285,26 @@ static int usbat_wait_not_busy(struct us_data *us, int minutes)

		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",
		@@ -412,9 +424,12 @@ static int usbat_hp8200e_rw_block_test(struct us_data *us,

		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;
		@@ -426,7 +441,7 @@ static int usbat_hp8200e_rw_block_test(struct us_data *us,
		} 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 ?
		@@ -456,11 +471,6 @@ static int usbat_hp8200e_rw_block_test(struct us_data *us,

		}


		//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);

		@@ -508,9 +518,9 @@ static int usbat_hp8200e_rw_block_test(struct us_data *us,

		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",
		@@ -547,32 +557,32 @@ static int usbat_multiple_write(struct us_data *us,

		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;
		@@ -606,17 +616,17 @@ static int usbat_read_blocks(struct us_data *us,
		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;
		@@ -647,17 +657,17 @@ static int usbat_write_blocks(struct us_data *us,
		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;
		@@ -711,16 +721,20 @@ static int usbat_device_reset(struct us_data *us)
		{
		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);
		@@ -737,7 +751,7 @@ static int usbat_device_enable_cdt(struct us_data *us)
		{
		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);
		@@ -786,7 +800,7 @@ static int usbat_flash_check_media(struct us_data *us,
		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;
		@@ -795,11 +809,11 @@ static int usbat_flash_check_media(struct us_data *us,
		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;
		@@ -855,13 +869,13 @@ static int usbat_identify_device(struct us_data *us,
		if (rc != USB_STOR_XFER_GOOD)
		return USB_STOR_TRANSPORT_ERROR;

		// Check for error bit, or if the command 'fell through'
		/* Check for error bit, or if the command 'fell through' */
		if (status == 0xA1 \|\| !(status & 0x01)) {
		// Device is HP 8200
		/* 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;
		}
		@@ -916,7 +930,7 @@ static int usbat_flash_get_sector_count(struct us_data *us,
		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");
		@@ -924,7 +938,7 @@ static int usbat_flash_get_sector_count(struct us_data *us,
		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;
		@@ -932,7 +946,7 @@ static int usbat_flash_get_sector_count(struct us_data *us,

		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;
		@@ -977,19 +991,23 @@ static int usbat_flash_read_data(struct us_data *us,
		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);
		@@ -997,27 +1015,29 @@ static int usbat_flash_read_data(struct us_data *us,
		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);

		@@ -1061,19 +1081,23 @@ static int usbat_flash_write_data(struct us_data *us,
		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);
		@@ -1081,24 +1105,26 @@ static int usbat_flash_write_data(struct us_data *us,
		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;
		@@ -1169,42 +1195,44 @@ static int usbat_hp8200e_handle_read10(struct us_data *us,
		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,
		@@ -1217,16 +1245,16 @@ static int usbat_hp8200e_handle_read10(struct us_data *us,
		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;
		@@ -1237,7 +1265,7 @@ static int usbat_select_and_test_registers(struct us_data *us)
		int selector;
		unsigned char *status = us->iobuf;

		// try device = master, then device = slave.
		/* 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)
		@@ -1298,7 +1326,7 @@ int init_usbat(struct us_data *us)
		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);
		@@ -1337,7 +1365,7 @@ int init_usbat(struct us_data *us)

		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;
		@@ -1364,7 +1392,7 @@ int init_usbat(struct us_data *us)

		US_DEBUGP("INIT 9\n");

		// At this point, we need to detect which device we are using
		/* At this point, we need to detect which device we are using */
		if (usbat_set_transport(us, info))
		return USB_STOR_TRANSPORT_ERROR;

		@@ -1414,10 +1442,10 @@ static int usbat_hp8200e_transport(struct scsi_cmnd srb, struct us_data us)
		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;
		@@ -1466,13 +1494,15 @@ static int usbat_hp8200e_transport(struct scsi_cmnd srb, struct us_data us)
		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,
		@@ -1481,19 +1511,18 @@ static int usbat_hp8200e_transport(struct scsi_cmnd srb, struct us_data us)
		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) {
		@@ -1556,13 +1585,16 @@ static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us)
		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);
		@@ -1586,7 +1618,9 @@ static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us)
		}

		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]));

		@@ -1608,7 +1642,9 @@ static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us)
		}

		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]));

		@@ -1645,8 +1681,10 @@ static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us)
		}

		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;
		}

drivers/usb/storage/shuttle_usbat.h

+33 −33

File changed.

Preview size limit exceeded, changes collapsed.

drivers/usb/storage/transport.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -50,7 +50,7 @@
		#define US_PR_CB 0x01 /* Control/Bulk w/o interrupt */
		#define US_PR_BULK 0x50 /* bulk only */
		#ifdef CONFIG_USB_STORAGE_USBAT
		#define US_PR_SCM_ATAPI 0x80 /* SCM-ATAPI bridge */
		#define US_PR_USBAT 0x80 /* SCM-ATAPI bridge */
		#endif
		#ifdef CONFIG_USB_STORAGE_SDDR09
		#define US_PR_EUSB_SDDR09 0x81 /* SCM-SCSI bridge for SDDR-09 */

drivers/usb/storage/unusual_devs.h

+5 −5

Original line number	Diff line number	Diff line
		@@ -71,12 +71,12 @@ UNUSUAL_DEV( 0x03f0, 0x0107, 0x0200, 0x0200,
		UNUSUAL_DEV( 0x03f0, 0x0207, 0x0001, 0x0001,
		"HP",
		"CD-Writer+ 8200e",
		US_SC_8070, US_PR_SCM_ATAPI, init_usbat, 0),
		US_SC_8070, US_PR_USBAT, init_usbat, 0),

		UNUSUAL_DEV( 0x03f0, 0x0307, 0x0001, 0x0001,
		"HP",
		"CD-Writer+ CD-4e",
		US_SC_8070, US_PR_SCM_ATAPI, init_usbat, 0),
		US_SC_8070, US_PR_USBAT, init_usbat, 0),
		#endif

		/* Patch submitted by Mihnea-Costin Grigore <mihnea@zulu.ro> */
		@@ -333,9 +333,9 @@ UNUSUAL_DEV( 0x04fc, 0x80c2, 0x0100, 0x0100,

		#ifdef CONFIG_USB_STORAGE_USBAT
		UNUSUAL_DEV( 0x04e6, 0x1010, 0x0000, 0x9999,
		"SCM",
		"SCM USBAT-02",
		US_SC_SCSI, US_PR_SCM_ATAPI, init_usbat,
		"Shuttle/SCM",
		"USBAT-02",
		US_SC_SCSI, US_PR_USBAT, init_usbat,
		US_FL_SINGLE_LUN),
		#endif

drivers/usb/storage/usb.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -555,8 +555,8 @@ static int get_transport(struct us_data *us)
		break;

		#ifdef CONFIG_USB_STORAGE_USBAT
		case US_PR_SCM_ATAPI:
		us->transport_name = "SCM/ATAPI";
		case US_PR_USBAT:
		us->transport_name = "Shuttle USBAT";
		us->transport = usbat_transport;
		us->transport_reset = usb_stor_CB_reset;
		us->max_lun = 1;