v4.19.13 snapshot.
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
new file mode 100644
index 0000000..6d1d6ef
--- /dev/null
+++ b/drivers/usb/serial/io_ti.c
@@ -0,0 +1,2819 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Edgeport USB Serial Converter driver
+ *
+ * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
+ * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
+ *
+ * Supports the following devices:
+ * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
+ *
+ * For questions or problems with this driver, contact Inside Out
+ * Networks technical support, or Peter Berger <pberger@brimson.com>,
+ * or Al Borchers <alborchers@steinerpoint.com>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/serial.h>
+#include <linux/swab.h>
+#include <linux/kfifo.h>
+#include <linux/ioctl.h>
+#include <linux/firmware.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+#include "io_16654.h"
+#include "io_usbvend.h"
+#include "io_ti.h"
+
+#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
+#define DRIVER_DESC "Edgeport USB Serial Driver"
+
+#define EPROM_PAGE_SIZE 64
+
+
+/* different hardware types */
+#define HARDWARE_TYPE_930 0
+#define HARDWARE_TYPE_TIUMP 1
+
+/* IOCTL_PRIVATE_TI_GET_MODE Definitions */
+#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
+#define TI_MODE_BOOT 1 /* Staying in boot mode */
+#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
+#define TI_MODE_TRANSITIONING 3 /*
+ * Currently in boot mode but
+ * transitioning to download mode
+ */
+
+/* read urb state */
+#define EDGE_READ_URB_RUNNING 0
+#define EDGE_READ_URB_STOPPING 1
+#define EDGE_READ_URB_STOPPED 2
+
+#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
+
+
+/* Product information read from the Edgeport */
+struct product_info {
+ int TiMode; /* Current TI Mode */
+ __u8 hardware_type; /* Type of hardware */
+} __attribute__((packed));
+
+/*
+ * Edgeport firmware header
+ *
+ * "build_number" has been set to 0 in all three of the images I have
+ * seen, and Digi Tech Support suggests that it is safe to ignore it.
+ *
+ * "length" is the number of bytes of actual data following the header.
+ *
+ * "checksum" is the low order byte resulting from adding the values of
+ * all the data bytes.
+ */
+struct edgeport_fw_hdr {
+ u8 major_version;
+ u8 minor_version;
+ __le16 build_number;
+ __le16 length;
+ u8 checksum;
+} __packed;
+
+struct edgeport_port {
+ __u16 uart_base;
+ __u16 dma_address;
+ __u8 shadow_msr;
+ __u8 shadow_mcr;
+ __u8 shadow_lsr;
+ __u8 lsr_mask;
+ __u32 ump_read_timeout; /*
+ * Number of milliseconds the UMP will
+ * wait without data before completing
+ * a read short
+ */
+ int baud_rate;
+ int close_pending;
+ int lsr_event;
+
+ struct edgeport_serial *edge_serial;
+ struct usb_serial_port *port;
+ __u8 bUartMode; /* Port type, 0: RS232, etc. */
+ spinlock_t ep_lock;
+ int ep_read_urb_state;
+ int ep_write_urb_in_use;
+};
+
+struct edgeport_serial {
+ struct product_info product_info;
+ u8 TI_I2C_Type; /* Type of I2C in UMP */
+ u8 TiReadI2C; /*
+ * Set to TRUE if we have read the
+ * I2c in Boot Mode
+ */
+ struct mutex es_lock;
+ int num_ports_open;
+ struct usb_serial *serial;
+ struct delayed_work heartbeat_work;
+ int fw_version;
+ bool use_heartbeat;
+};
+
+
+/* Devices that this driver supports */
+static const struct usb_device_id edgeport_1port_id_table[] = {
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
+ { }
+};
+
+static const struct usb_device_id edgeport_2port_id_table[] = {
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
+ /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
+ { }
+};
+
+/* Devices that this driver supports */
+static const struct usb_device_id id_table_combined[] = {
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
+ { }
+};
+
+MODULE_DEVICE_TABLE(usb, id_table_combined);
+
+static int closing_wait = EDGE_CLOSING_WAIT;
+static bool ignore_cpu_rev;
+static int default_uart_mode; /* RS232 */
+
+static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
+ int length);
+
+static void stop_read(struct edgeport_port *edge_port);
+static int restart_read(struct edgeport_port *edge_port);
+
+static void edge_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old_termios);
+static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
+
+static int do_download_mode(struct edgeport_serial *serial,
+ const struct firmware *fw);
+static int do_boot_mode(struct edgeport_serial *serial,
+ const struct firmware *fw);
+
+/* sysfs attributes */
+static int edge_create_sysfs_attrs(struct usb_serial_port *port);
+static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
+
+/*
+ * Some release of Edgeport firmware "down3.bin" after version 4.80
+ * introduced code to automatically disconnect idle devices on some
+ * Edgeport models after periods of inactivity, typically ~60 seconds.
+ * This occurs without regard to whether ports on the device are open
+ * or not. Digi International Tech Support suggested:
+ *
+ * 1. Adding driver "heartbeat" code to reset the firmware timer by
+ * requesting a descriptor record every 15 seconds, which should be
+ * effective with newer firmware versions that require it, and benign
+ * with older versions that do not. In practice 40 seconds seems often
+ * enough.
+ * 2. The heartbeat code is currently required only on Edgeport/416 models.
+ */
+#define FW_HEARTBEAT_VERSION_CUTOFF ((4 << 8) + 80)
+#define FW_HEARTBEAT_SECS 40
+
+/* Timeouts in msecs: firmware downloads take longer */
+#define TI_VSEND_TIMEOUT_DEFAULT 1000
+#define TI_VSEND_TIMEOUT_FW_DOWNLOAD 10000
+
+static int ti_vread_sync(struct usb_device *dev, __u8 request,
+ __u16 value, __u16 index, u8 *data, int size)
+{
+ int status;
+
+ status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
+ (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
+ value, index, data, size, 1000);
+ if (status < 0)
+ return status;
+ if (status != size) {
+ dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
+ __func__, size, status);
+ return -ECOMM;
+ }
+ return 0;
+}
+
+static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value,
+ u16 index, u8 *data, int size, int timeout)
+{
+ int status;
+
+ status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
+ (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
+ value, index, data, size, timeout);
+ if (status < 0)
+ return status;
+ if (status != size) {
+ dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
+ __func__, size, status);
+ return -ECOMM;
+ }
+ return 0;
+}
+
+static int send_cmd(struct usb_device *dev, __u8 command,
+ __u8 moduleid, __u16 value, u8 *data,
+ int size)
+{
+ return ti_vsend_sync(dev, command, value, moduleid, data, size,
+ TI_VSEND_TIMEOUT_DEFAULT);
+}
+
+/* clear tx/rx buffers and fifo in TI UMP */
+static int purge_port(struct usb_serial_port *port, __u16 mask)
+{
+ int port_number = port->port_number;
+
+ dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
+
+ return send_cmd(port->serial->dev,
+ UMPC_PURGE_PORT,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ mask,
+ NULL,
+ 0);
+}
+
+/**
+ * read_download_mem - Read edgeport memory from TI chip
+ * @dev: usb device pointer
+ * @start_address: Device CPU address at which to read
+ * @length: Length of above data
+ * @address_type: Can read both XDATA and I2C
+ * @buffer: pointer to input data buffer
+ */
+static int read_download_mem(struct usb_device *dev, int start_address,
+ int length, __u8 address_type, __u8 *buffer)
+{
+ int status = 0;
+ __u8 read_length;
+ u16 be_start_address;
+
+ dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
+
+ /*
+ * Read in blocks of 64 bytes
+ * (TI firmware can't handle more than 64 byte reads)
+ */
+ while (length) {
+ if (length > 64)
+ read_length = 64;
+ else
+ read_length = (__u8)length;
+
+ if (read_length > 1) {
+ dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
+ }
+ /*
+ * NOTE: Must use swab as wIndex is sent in little-endian
+ * byte order regardless of host byte order.
+ */
+ be_start_address = swab16((u16)start_address);
+ status = ti_vread_sync(dev, UMPC_MEMORY_READ,
+ (__u16)address_type,
+ be_start_address,
+ buffer, read_length);
+
+ if (status) {
+ dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
+ return status;
+ }
+
+ if (read_length > 1)
+ usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
+
+ /* Update pointers/length */
+ start_address += read_length;
+ buffer += read_length;
+ length -= read_length;
+ }
+
+ return status;
+}
+
+static int read_ram(struct usb_device *dev, int start_address,
+ int length, __u8 *buffer)
+{
+ return read_download_mem(dev, start_address, length,
+ DTK_ADDR_SPACE_XDATA, buffer);
+}
+
+/* Read edgeport memory to a given block */
+static int read_boot_mem(struct edgeport_serial *serial,
+ int start_address, int length, __u8 *buffer)
+{
+ int status = 0;
+ int i;
+
+ for (i = 0; i < length; i++) {
+ status = ti_vread_sync(serial->serial->dev,
+ UMPC_MEMORY_READ, serial->TI_I2C_Type,
+ (__u16)(start_address+i), &buffer[i], 0x01);
+ if (status) {
+ dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
+ return status;
+ }
+ }
+
+ dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
+ __func__, start_address, length);
+ usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
+
+ serial->TiReadI2C = 1;
+
+ return status;
+}
+
+/* Write given block to TI EPROM memory */
+static int write_boot_mem(struct edgeport_serial *serial,
+ int start_address, int length, __u8 *buffer)
+{
+ int status = 0;
+ int i;
+ u8 *temp;
+
+ /* Must do a read before write */
+ if (!serial->TiReadI2C) {
+ temp = kmalloc(1, GFP_KERNEL);
+ if (!temp)
+ return -ENOMEM;
+
+ status = read_boot_mem(serial, 0, 1, temp);
+ kfree(temp);
+ if (status)
+ return status;
+ }
+
+ for (i = 0; i < length; ++i) {
+ status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
+ buffer[i], (u16)(i + start_address), NULL,
+ 0, TI_VSEND_TIMEOUT_DEFAULT);
+ if (status)
+ return status;
+ }
+
+ dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
+ usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
+
+ return status;
+}
+
+/* Write edgeport I2C memory to TI chip */
+static int write_i2c_mem(struct edgeport_serial *serial,
+ int start_address, int length, __u8 address_type, __u8 *buffer)
+{
+ struct device *dev = &serial->serial->dev->dev;
+ int status = 0;
+ int write_length;
+ u16 be_start_address;
+
+ /* We can only send a maximum of 1 aligned byte page at a time */
+
+ /* calculate the number of bytes left in the first page */
+ write_length = EPROM_PAGE_SIZE -
+ (start_address & (EPROM_PAGE_SIZE - 1));
+
+ if (write_length > length)
+ write_length = length;
+
+ dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
+ __func__, start_address, write_length);
+ usb_serial_debug_data(dev, __func__, write_length, buffer);
+
+ /*
+ * Write first page.
+ *
+ * NOTE: Must use swab as wIndex is sent in little-endian byte order
+ * regardless of host byte order.
+ */
+ be_start_address = swab16((u16)start_address);
+ status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
+ (u16)address_type, be_start_address,
+ buffer, write_length, TI_VSEND_TIMEOUT_DEFAULT);
+ if (status) {
+ dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
+ return status;
+ }
+
+ length -= write_length;
+ start_address += write_length;
+ buffer += write_length;
+
+ /*
+ * We should be aligned now -- can write max page size bytes at a
+ * time.
+ */
+ while (length) {
+ if (length > EPROM_PAGE_SIZE)
+ write_length = EPROM_PAGE_SIZE;
+ else
+ write_length = length;
+
+ dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
+ __func__, start_address, write_length);
+ usb_serial_debug_data(dev, __func__, write_length, buffer);
+
+ /*
+ * Write next page.
+ *
+ * NOTE: Must use swab as wIndex is sent in little-endian byte
+ * order regardless of host byte order.
+ */
+ be_start_address = swab16((u16)start_address);
+ status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
+ (u16)address_type, be_start_address, buffer,
+ write_length, TI_VSEND_TIMEOUT_DEFAULT);
+ if (status) {
+ dev_err(dev, "%s - ERROR %d\n", __func__, status);
+ return status;
+ }
+
+ length -= write_length;
+ start_address += write_length;
+ buffer += write_length;
+ }
+ return status;
+}
+
+/*
+ * Examine the UMP DMA registers and LSR
+ *
+ * Check the MSBit of the X and Y DMA byte count registers.
+ * A zero in this bit indicates that the TX DMA buffers are empty
+ * then check the TX Empty bit in the UART.
+ */
+static int tx_active(struct edgeport_port *port)
+{
+ int status;
+ struct out_endpoint_desc_block *oedb;
+ __u8 *lsr;
+ int bytes_left = 0;
+
+ oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
+ if (!oedb)
+ return -ENOMEM;
+
+ /*
+ * Sigh, that's right, just one byte, as not all platforms can
+ * do DMA from stack
+ */
+ lsr = kmalloc(1, GFP_KERNEL);
+ if (!lsr) {
+ kfree(oedb);
+ return -ENOMEM;
+ }
+ /* Read the DMA Count Registers */
+ status = read_ram(port->port->serial->dev, port->dma_address,
+ sizeof(*oedb), (void *)oedb);
+ if (status)
+ goto exit_is_tx_active;
+
+ dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
+
+ /* and the LSR */
+ status = read_ram(port->port->serial->dev,
+ port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
+
+ if (status)
+ goto exit_is_tx_active;
+ dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
+
+ /* If either buffer has data or we are transmitting then return TRUE */
+ if ((oedb->XByteCount & 0x80) != 0)
+ bytes_left += 64;
+
+ if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
+ bytes_left += 1;
+
+ /* We return Not Active if we get any kind of error */
+exit_is_tx_active:
+ dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
+
+ kfree(lsr);
+ kfree(oedb);
+ return bytes_left;
+}
+
+static int choose_config(struct usb_device *dev)
+{
+ /*
+ * There may be multiple configurations on this device, in which case
+ * we would need to read and parse all of them to find out which one
+ * we want. However, we just support one config at this point,
+ * configuration # 1, which is Config Descriptor 0.
+ */
+
+ dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
+ __func__, dev->config->desc.bNumInterfaces);
+ dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
+ __func__, dev->config->desc.bMaxPower * 2);
+
+ if (dev->config->desc.bNumInterfaces != 1) {
+ dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int read_rom(struct edgeport_serial *serial,
+ int start_address, int length, __u8 *buffer)
+{
+ int status;
+
+ if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
+ status = read_download_mem(serial->serial->dev,
+ start_address,
+ length,
+ serial->TI_I2C_Type,
+ buffer);
+ } else {
+ status = read_boot_mem(serial, start_address, length,
+ buffer);
+ }
+ return status;
+}
+
+static int write_rom(struct edgeport_serial *serial, int start_address,
+ int length, __u8 *buffer)
+{
+ if (serial->product_info.TiMode == TI_MODE_BOOT)
+ return write_boot_mem(serial, start_address, length,
+ buffer);
+
+ if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
+ return write_i2c_mem(serial, start_address, length,
+ serial->TI_I2C_Type, buffer);
+ return -EINVAL;
+}
+
+/* Read a descriptor header from I2C based on type */
+static int get_descriptor_addr(struct edgeport_serial *serial,
+ int desc_type, struct ti_i2c_desc *rom_desc)
+{
+ int start_address;
+ int status;
+
+ /* Search for requested descriptor in I2C */
+ start_address = 2;
+ do {
+ status = read_rom(serial,
+ start_address,
+ sizeof(struct ti_i2c_desc),
+ (__u8 *)rom_desc);
+ if (status)
+ return 0;
+
+ if (rom_desc->Type == desc_type)
+ return start_address;
+
+ start_address = start_address + sizeof(struct ti_i2c_desc) +
+ le16_to_cpu(rom_desc->Size);
+
+ } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
+
+ return 0;
+}
+
+/* Validate descriptor checksum */
+static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
+{
+ __u16 i;
+ __u8 cs = 0;
+
+ for (i = 0; i < le16_to_cpu(rom_desc->Size); i++)
+ cs = (__u8)(cs + buffer[i]);
+
+ if (cs != rom_desc->CheckSum) {
+ pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/* Make sure that the I2C image is good */
+static int check_i2c_image(struct edgeport_serial *serial)
+{
+ struct device *dev = &serial->serial->dev->dev;
+ int status = 0;
+ struct ti_i2c_desc *rom_desc;
+ int start_address = 2;
+ __u8 *buffer;
+ __u16 ttype;
+
+ rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
+ if (!rom_desc)
+ return -ENOMEM;
+
+ buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
+ if (!buffer) {
+ kfree(rom_desc);
+ return -ENOMEM;
+ }
+
+ /* Read the first byte (Signature0) must be 0x52 or 0x10 */
+ status = read_rom(serial, 0, 1, buffer);
+ if (status)
+ goto out;
+
+ if (*buffer != UMP5152 && *buffer != UMP3410) {
+ dev_err(dev, "%s - invalid buffer signature\n", __func__);
+ status = -ENODEV;
+ goto out;
+ }
+
+ do {
+ /* Validate the I2C */
+ status = read_rom(serial,
+ start_address,
+ sizeof(struct ti_i2c_desc),
+ (__u8 *)rom_desc);
+ if (status)
+ break;
+
+ if ((start_address + sizeof(struct ti_i2c_desc) +
+ le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) {
+ status = -ENODEV;
+ dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
+ break;
+ }
+
+ dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
+
+ /* Skip type 2 record */
+ ttype = rom_desc->Type & 0x0f;
+ if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
+ && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
+ /* Read the descriptor data */
+ status = read_rom(serial, start_address +
+ sizeof(struct ti_i2c_desc),
+ le16_to_cpu(rom_desc->Size),
+ buffer);
+ if (status)
+ break;
+
+ status = valid_csum(rom_desc, buffer);
+ if (status)
+ break;
+ }
+ start_address = start_address + sizeof(struct ti_i2c_desc) +
+ le16_to_cpu(rom_desc->Size);
+
+ } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
+ (start_address < TI_MAX_I2C_SIZE));
+
+ if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
+ (start_address > TI_MAX_I2C_SIZE))
+ status = -ENODEV;
+
+out:
+ kfree(buffer);
+ kfree(rom_desc);
+ return status;
+}
+
+static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
+{
+ int status;
+ int start_address;
+ struct ti_i2c_desc *rom_desc;
+ struct edge_ti_manuf_descriptor *desc;
+ struct device *dev = &serial->serial->dev->dev;
+
+ rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
+ if (!rom_desc)
+ return -ENOMEM;
+
+ start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
+ rom_desc);
+
+ if (!start_address) {
+ dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
+ status = -ENODEV;
+ goto exit;
+ }
+
+ /* Read the descriptor data */
+ status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
+ le16_to_cpu(rom_desc->Size), buffer);
+ if (status)
+ goto exit;
+
+ status = valid_csum(rom_desc, buffer);
+
+ desc = (struct edge_ti_manuf_descriptor *)buffer;
+ dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
+ dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
+ dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
+ dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
+ dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
+ dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
+
+exit:
+ kfree(rom_desc);
+ return status;
+}
+
+/* Build firmware header used for firmware update */
+static int build_i2c_fw_hdr(u8 *header, const struct firmware *fw)
+{
+ __u8 *buffer;
+ int buffer_size;
+ int i;
+ __u8 cs = 0;
+ struct ti_i2c_desc *i2c_header;
+ struct ti_i2c_image_header *img_header;
+ struct ti_i2c_firmware_rec *firmware_rec;
+ struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
+
+ /*
+ * In order to update the I2C firmware we must change the type 2 record
+ * to type 0xF2. This will force the UMP to come up in Boot Mode.
+ * Then while in boot mode, the driver will download the latest
+ * firmware (padded to 15.5k) into the UMP ram. And finally when the
+ * device comes back up in download mode the driver will cause the new
+ * firmware to be copied from the UMP Ram to I2C and the firmware will
+ * update the record type from 0xf2 to 0x02.
+ */
+
+ /*
+ * Allocate a 15.5k buffer + 2 bytes for version number (Firmware
+ * Record)
+ */
+ buffer_size = (((1024 * 16) - 512 ) +
+ sizeof(struct ti_i2c_firmware_rec));
+
+ buffer = kmalloc(buffer_size, GFP_KERNEL);
+ if (!buffer)
+ return -ENOMEM;
+
+ /* Set entire image of 0xffs */
+ memset(buffer, 0xff, buffer_size);
+
+ /* Copy version number into firmware record */
+ firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
+
+ firmware_rec->Ver_Major = fw_hdr->major_version;
+ firmware_rec->Ver_Minor = fw_hdr->minor_version;
+
+ /* Pointer to fw_down memory image */
+ img_header = (struct ti_i2c_image_header *)&fw->data[4];
+
+ memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
+ &fw->data[4 + sizeof(struct ti_i2c_image_header)],
+ le16_to_cpu(img_header->Length));
+
+ for (i=0; i < buffer_size; i++) {
+ cs = (__u8)(cs + buffer[i]);
+ }
+
+ kfree(buffer);
+
+ /* Build new header */
+ i2c_header = (struct ti_i2c_desc *)header;
+ firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
+
+ i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
+ i2c_header->Size = cpu_to_le16(buffer_size);
+ i2c_header->CheckSum = cs;
+ firmware_rec->Ver_Major = fw_hdr->major_version;
+ firmware_rec->Ver_Minor = fw_hdr->minor_version;
+
+ return 0;
+}
+
+/* Try to figure out what type of I2c we have */
+static int i2c_type_bootmode(struct edgeport_serial *serial)
+{
+ struct device *dev = &serial->serial->dev->dev;
+ int status;
+ u8 *data;
+
+ data = kmalloc(1, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ /* Try to read type 2 */
+ status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
+ DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
+ if (status)
+ dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
+ else
+ dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
+ if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
+ dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
+ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+ goto out;
+ }
+
+ /* Try to read type 3 */
+ status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
+ DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
+ if (status)
+ dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
+ else
+ dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
+ if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
+ dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
+ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
+ goto out;
+ }
+
+ dev_dbg(dev, "%s - Unknown\n", __func__);
+ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+ status = -ENODEV;
+out:
+ kfree(data);
+ return status;
+}
+
+static int bulk_xfer(struct usb_serial *serial, void *buffer,
+ int length, int *num_sent)
+{
+ int status;
+
+ status = usb_bulk_msg(serial->dev,
+ usb_sndbulkpipe(serial->dev,
+ serial->port[0]->bulk_out_endpointAddress),
+ buffer, length, num_sent, 1000);
+ return status;
+}
+
+/* Download given firmware image to the device (IN BOOT MODE) */
+static int download_code(struct edgeport_serial *serial, __u8 *image,
+ int image_length)
+{
+ int status = 0;
+ int pos;
+ int transfer;
+ int done;
+
+ /* Transfer firmware image */
+ for (pos = 0; pos < image_length; ) {
+ /* Read the next buffer from file */
+ transfer = image_length - pos;
+ if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
+ transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
+
+ /* Transfer data */
+ status = bulk_xfer(serial->serial, &image[pos],
+ transfer, &done);
+ if (status)
+ break;
+ /* Advance buffer pointer */
+ pos += done;
+ }
+
+ return status;
+}
+
+/* FIXME!!! */
+static int config_boot_dev(struct usb_device *dev)
+{
+ return 0;
+}
+
+static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
+{
+ return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
+}
+
+static int check_fw_sanity(struct edgeport_serial *serial,
+ const struct firmware *fw)
+{
+ u16 length_total;
+ u8 checksum = 0;
+ int pos;
+ struct device *dev = &serial->serial->interface->dev;
+ struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
+
+ if (fw->size < sizeof(struct edgeport_fw_hdr)) {
+ dev_err(dev, "incomplete fw header\n");
+ return -EINVAL;
+ }
+
+ length_total = le16_to_cpu(fw_hdr->length) +
+ sizeof(struct edgeport_fw_hdr);
+
+ if (fw->size != length_total) {
+ dev_err(dev, "bad fw size (expected: %u, got: %zu)\n",
+ length_total, fw->size);
+ return -EINVAL;
+ }
+
+ for (pos = sizeof(struct edgeport_fw_hdr); pos < fw->size; ++pos)
+ checksum += fw->data[pos];
+
+ if (checksum != fw_hdr->checksum) {
+ dev_err(dev, "bad fw checksum (expected: 0x%x, got: 0x%x)\n",
+ fw_hdr->checksum, checksum);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * DownloadTIFirmware - Download run-time operating firmware to the TI5052
+ *
+ * This routine downloads the main operating code into the TI5052, using the
+ * boot code already burned into E2PROM or ROM.
+ */
+static int download_fw(struct edgeport_serial *serial)
+{
+ struct device *dev = &serial->serial->interface->dev;
+ int status = 0;
+ struct usb_interface_descriptor *interface;
+ const struct firmware *fw;
+ const char *fw_name = "edgeport/down3.bin";
+ struct edgeport_fw_hdr *fw_hdr;
+
+ status = request_firmware(&fw, fw_name, dev);
+ if (status) {
+ dev_err(dev, "Failed to load image \"%s\" err %d\n",
+ fw_name, status);
+ return status;
+ }
+
+ if (check_fw_sanity(serial, fw)) {
+ status = -EINVAL;
+ goto out;
+ }
+
+ fw_hdr = (struct edgeport_fw_hdr *)fw->data;
+
+ /* If on-board version is newer, "fw_version" will be updated later. */
+ serial->fw_version = (fw_hdr->major_version << 8) +
+ fw_hdr->minor_version;
+
+ /*
+ * This routine is entered by both the BOOT mode and the Download mode
+ * We can determine which code is running by the reading the config
+ * descriptor and if we have only one bulk pipe it is in boot mode
+ */
+ serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
+
+ /* Default to type 2 i2c */
+ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+
+ status = choose_config(serial->serial->dev);
+ if (status)
+ goto out;
+
+ interface = &serial->serial->interface->cur_altsetting->desc;
+ if (!interface) {
+ dev_err(dev, "%s - no interface set, error!\n", __func__);
+ status = -ENODEV;
+ goto out;
+ }
+
+ /*
+ * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
+ * if we have more than one endpoint we are definitely in download
+ * mode
+ */
+ if (interface->bNumEndpoints > 1) {
+ serial->product_info.TiMode = TI_MODE_DOWNLOAD;
+ status = do_download_mode(serial, fw);
+ } else {
+ /* Otherwise we will remain in configuring mode */
+ serial->product_info.TiMode = TI_MODE_CONFIGURING;
+ status = do_boot_mode(serial, fw);
+ }
+
+out:
+ release_firmware(fw);
+ return status;
+}
+
+static int do_download_mode(struct edgeport_serial *serial,
+ const struct firmware *fw)
+{
+ struct device *dev = &serial->serial->interface->dev;
+ int status = 0;
+ int start_address;
+ struct edge_ti_manuf_descriptor *ti_manuf_desc;
+ int download_cur_ver;
+ int download_new_ver;
+ struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
+ struct ti_i2c_desc *rom_desc;
+
+ dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
+
+ status = check_i2c_image(serial);
+ if (status) {
+ dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
+ return status;
+ }
+
+ /*
+ * Validate Hardware version number
+ * Read Manufacturing Descriptor from TI Based Edgeport
+ */
+ ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
+ if (!ti_manuf_desc)
+ return -ENOMEM;
+
+ status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
+ if (status) {
+ kfree(ti_manuf_desc);
+ return status;
+ }
+
+ /* Check version number of ION descriptor */
+ if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
+ dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
+ __func__, ti_cpu_rev(ti_manuf_desc));
+ kfree(ti_manuf_desc);
+ return -EINVAL;
+ }
+
+ rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
+ if (!rom_desc) {
+ kfree(ti_manuf_desc);
+ return -ENOMEM;
+ }
+
+ /* Search for type 2 record (firmware record) */
+ start_address = get_descriptor_addr(serial,
+ I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
+ if (start_address != 0) {
+ struct ti_i2c_firmware_rec *firmware_version;
+ u8 *record;
+
+ dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n",
+ __func__);
+
+ firmware_version = kmalloc(sizeof(*firmware_version),
+ GFP_KERNEL);
+ if (!firmware_version) {
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -ENOMEM;
+ }
+
+ /*
+ * Validate version number
+ * Read the descriptor data
+ */
+ status = read_rom(serial, start_address +
+ sizeof(struct ti_i2c_desc),
+ sizeof(struct ti_i2c_firmware_rec),
+ (__u8 *)firmware_version);
+ if (status) {
+ kfree(firmware_version);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return status;
+ }
+
+ /*
+ * Check version number of download with current
+ * version in I2c
+ */
+ download_cur_ver = (firmware_version->Ver_Major << 8) +
+ (firmware_version->Ver_Minor);
+ download_new_ver = (fw_hdr->major_version << 8) +
+ (fw_hdr->minor_version);
+
+ dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
+ __func__, firmware_version->Ver_Major,
+ firmware_version->Ver_Minor,
+ fw_hdr->major_version, fw_hdr->minor_version);
+
+ /*
+ * Check if we have an old version in the I2C and
+ * update if necessary
+ */
+ if (download_cur_ver < download_new_ver) {
+ dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
+ __func__,
+ firmware_version->Ver_Major,
+ firmware_version->Ver_Minor,
+ fw_hdr->major_version,
+ fw_hdr->minor_version);
+
+ record = kmalloc(1, GFP_KERNEL);
+ if (!record) {
+ kfree(firmware_version);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -ENOMEM;
+ }
+ /*
+ * In order to update the I2C firmware we must
+ * change the type 2 record to type 0xF2. This
+ * will force the UMP to come up in Boot Mode.
+ * Then while in boot mode, the driver will
+ * download the latest firmware (padded to
+ * 15.5k) into the UMP ram. Finally when the
+ * device comes back up in download mode the
+ * driver will cause the new firmware to be
+ * copied from the UMP Ram to I2C and the
+ * firmware will update the record type from
+ * 0xf2 to 0x02.
+ */
+ *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
+
+ /*
+ * Change the I2C Firmware record type to
+ * 0xf2 to trigger an update
+ */
+ status = write_rom(serial, start_address,
+ sizeof(*record), record);
+ if (status) {
+ kfree(record);
+ kfree(firmware_version);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return status;
+ }
+
+ /*
+ * verify the write -- must do this in order
+ * for write to complete before we do the
+ * hardware reset
+ */
+ status = read_rom(serial,
+ start_address,
+ sizeof(*record),
+ record);
+ if (status) {
+ kfree(record);
+ kfree(firmware_version);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return status;
+ }
+
+ if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
+ dev_err(dev, "%s - error resetting device\n",
+ __func__);
+ kfree(record);
+ kfree(firmware_version);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -ENODEV;
+ }
+
+ dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
+
+ /* Reset UMP -- Back to BOOT MODE */
+ status = ti_vsend_sync(serial->serial->dev,
+ UMPC_HARDWARE_RESET,
+ 0, 0, NULL, 0,
+ TI_VSEND_TIMEOUT_DEFAULT);
+
+ dev_dbg(dev, "%s - HARDWARE RESET return %d\n",
+ __func__, status);
+
+ /* return an error on purpose. */
+ kfree(record);
+ kfree(firmware_version);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -ENODEV;
+ }
+ /* Same or newer fw version is already loaded */
+ serial->fw_version = download_cur_ver;
+ kfree(firmware_version);
+ }
+ /* Search for type 0xF2 record (firmware blank record) */
+ else {
+ start_address = get_descriptor_addr(serial,
+ I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc);
+ if (start_address != 0) {
+#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
+ sizeof(struct ti_i2c_firmware_rec))
+ __u8 *header;
+ __u8 *vheader;
+
+ header = kmalloc(HEADER_SIZE, GFP_KERNEL);
+ if (!header) {
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -ENOMEM;
+ }
+
+ vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
+ if (!vheader) {
+ kfree(header);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -ENOMEM;
+ }
+
+ dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n",
+ __func__);
+
+ /*
+ * In order to update the I2C firmware we must change
+ * the type 2 record to type 0xF2. This will force the
+ * UMP to come up in Boot Mode. Then while in boot
+ * mode, the driver will download the latest firmware
+ * (padded to 15.5k) into the UMP ram. Finally when the
+ * device comes back up in download mode the driver
+ * will cause the new firmware to be copied from the
+ * UMP Ram to I2C and the firmware will update the
+ * record type from 0xf2 to 0x02.
+ */
+ status = build_i2c_fw_hdr(header, fw);
+ if (status) {
+ kfree(vheader);
+ kfree(header);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -EINVAL;
+ }
+
+ /*
+ * Update I2C with type 0xf2 record with correct
+ * size and checksum
+ */
+ status = write_rom(serial,
+ start_address,
+ HEADER_SIZE,
+ header);
+ if (status) {
+ kfree(vheader);
+ kfree(header);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -EINVAL;
+ }
+
+ /*
+ * verify the write -- must do this in order for
+ * write to complete before we do the hardware reset
+ */
+ status = read_rom(serial, start_address,
+ HEADER_SIZE, vheader);
+
+ if (status) {
+ dev_dbg(dev, "%s - can't read header back\n",
+ __func__);
+ kfree(vheader);
+ kfree(header);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return status;
+ }
+ if (memcmp(vheader, header, HEADER_SIZE)) {
+ dev_dbg(dev, "%s - write download record failed\n",
+ __func__);
+ kfree(vheader);
+ kfree(header);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return -EINVAL;
+ }
+
+ kfree(vheader);
+ kfree(header);
+
+ dev_dbg(dev, "%s - Start firmware update\n", __func__);
+
+ /* Tell firmware to copy download image into I2C */
+ status = ti_vsend_sync(serial->serial->dev,
+ UMPC_COPY_DNLD_TO_I2C,
+ 0, 0, NULL, 0,
+ TI_VSEND_TIMEOUT_FW_DOWNLOAD);
+
+ dev_dbg(dev, "%s - Update complete 0x%x\n", __func__,
+ status);
+ if (status) {
+ dev_err(dev,
+ "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
+ __func__);
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return status;
+ }
+ }
+ }
+
+ /* The device is running the download code */
+ kfree(rom_desc);
+ kfree(ti_manuf_desc);
+ return 0;
+}
+
+static int do_boot_mode(struct edgeport_serial *serial,
+ const struct firmware *fw)
+{
+ struct device *dev = &serial->serial->interface->dev;
+ int status = 0;
+ struct edge_ti_manuf_descriptor *ti_manuf_desc;
+ struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
+
+ dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
+
+ /* Configure the TI device so we can use the BULK pipes for download */
+ status = config_boot_dev(serial->serial->dev);
+ if (status)
+ return status;
+
+ if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
+ != USB_VENDOR_ID_ION) {
+ dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
+ le16_to_cpu(serial->serial->dev->descriptor.idVendor));
+ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+ goto stayinbootmode;
+ }
+
+ /*
+ * We have an ION device (I2c Must be programmed)
+ * Determine I2C image type
+ */
+ if (i2c_type_bootmode(serial))
+ goto stayinbootmode;
+
+ /* Check for ION Vendor ID and that the I2C is valid */
+ if (!check_i2c_image(serial)) {
+ struct ti_i2c_image_header *header;
+ int i;
+ __u8 cs = 0;
+ __u8 *buffer;
+ int buffer_size;
+
+ /*
+ * Validate Hardware version number
+ * Read Manufacturing Descriptor from TI Based Edgeport
+ */
+ ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
+ if (!ti_manuf_desc)
+ return -ENOMEM;
+
+ status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
+ if (status) {
+ kfree(ti_manuf_desc);
+ goto stayinbootmode;
+ }
+
+ /* Check for version 2 */
+ if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
+ dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
+ __func__, ti_cpu_rev(ti_manuf_desc));
+ kfree(ti_manuf_desc);
+ goto stayinbootmode;
+ }
+
+ kfree(ti_manuf_desc);
+
+ /*
+ * In order to update the I2C firmware we must change the type
+ * 2 record to type 0xF2. This will force the UMP to come up
+ * in Boot Mode. Then while in boot mode, the driver will
+ * download the latest firmware (padded to 15.5k) into the
+ * UMP ram. Finally when the device comes back up in download
+ * mode the driver will cause the new firmware to be copied
+ * from the UMP Ram to I2C and the firmware will update the
+ * record type from 0xf2 to 0x02.
+ *
+ * Do we really have to copy the whole firmware image,
+ * or could we do this in place!
+ */
+
+ /* Allocate a 15.5k buffer + 3 byte header */
+ buffer_size = (((1024 * 16) - 512) +
+ sizeof(struct ti_i2c_image_header));
+ buffer = kmalloc(buffer_size, GFP_KERNEL);
+ if (!buffer)
+ return -ENOMEM;
+
+ /* Initialize the buffer to 0xff (pad the buffer) */
+ memset(buffer, 0xff, buffer_size);
+ memcpy(buffer, &fw->data[4], fw->size - 4);
+
+ for (i = sizeof(struct ti_i2c_image_header);
+ i < buffer_size; i++) {
+ cs = (__u8)(cs + buffer[i]);
+ }
+
+ header = (struct ti_i2c_image_header *)buffer;
+
+ /* update length and checksum after padding */
+ header->Length = cpu_to_le16((__u16)(buffer_size -
+ sizeof(struct ti_i2c_image_header)));
+ header->CheckSum = cs;
+
+ /* Download the operational code */
+ dev_dbg(dev, "%s - Downloading operational code image version %d.%d (TI UMP)\n",
+ __func__,
+ fw_hdr->major_version, fw_hdr->minor_version);
+ status = download_code(serial, buffer, buffer_size);
+
+ kfree(buffer);
+
+ if (status) {
+ dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
+ return status;
+ }
+
+ /* Device will reboot */
+ serial->product_info.TiMode = TI_MODE_TRANSITIONING;
+
+ dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
+
+ return 1;
+ }
+
+stayinbootmode:
+ /* Eprom is invalid or blank stay in boot mode */
+ dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
+ serial->product_info.TiMode = TI_MODE_BOOT;
+
+ return 1;
+}
+
+static int ti_do_config(struct edgeport_port *port, int feature, int on)
+{
+ int port_number = port->port->port_number;
+
+ on = !!on; /* 1 or 0 not bitmask */
+ return send_cmd(port->port->serial->dev,
+ feature, (__u8)(UMPM_UART1_PORT + port_number),
+ on, NULL, 0);
+}
+
+static int restore_mcr(struct edgeport_port *port, __u8 mcr)
+{
+ int status = 0;
+
+ dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
+
+ status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
+ if (status)
+ return status;
+ status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
+ if (status)
+ return status;
+ return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
+}
+
+/* Convert TI LSR to standard UART flags */
+static __u8 map_line_status(__u8 ti_lsr)
+{
+ __u8 lsr = 0;
+
+#define MAP_FLAG(flagUmp, flagUart) \
+ if (ti_lsr & flagUmp) \
+ lsr |= flagUart;
+
+ MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
+ MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
+ MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
+ MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
+ MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
+ MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
+
+#undef MAP_FLAG
+
+ return lsr;
+}
+
+static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
+{
+ struct async_icount *icount;
+ struct tty_struct *tty;
+
+ dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
+
+ if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
+ EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
+ icount = &edge_port->port->icount;
+
+ /* update input line counters */
+ if (msr & EDGEPORT_MSR_DELTA_CTS)
+ icount->cts++;
+ if (msr & EDGEPORT_MSR_DELTA_DSR)
+ icount->dsr++;
+ if (msr & EDGEPORT_MSR_DELTA_CD)
+ icount->dcd++;
+ if (msr & EDGEPORT_MSR_DELTA_RI)
+ icount->rng++;
+ wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
+ }
+
+ /* Save the new modem status */
+ edge_port->shadow_msr = msr & 0xf0;
+
+ tty = tty_port_tty_get(&edge_port->port->port);
+ /* handle CTS flow control */
+ if (tty && C_CRTSCTS(tty)) {
+ if (msr & EDGEPORT_MSR_CTS)
+ tty_wakeup(tty);
+ }
+ tty_kref_put(tty);
+}
+
+static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
+ __u8 lsr, __u8 data)
+{
+ struct async_icount *icount;
+ __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
+ LSR_FRM_ERR | LSR_BREAK));
+
+ dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
+
+ edge_port->shadow_lsr = lsr;
+
+ if (new_lsr & LSR_BREAK)
+ /*
+ * Parity and Framing errors only count if they
+ * occur exclusive of a break being received.
+ */
+ new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
+
+ /* Place LSR data byte into Rx buffer */
+ if (lsr_data)
+ edge_tty_recv(edge_port->port, &data, 1);
+
+ /* update input line counters */
+ icount = &edge_port->port->icount;
+ if (new_lsr & LSR_BREAK)
+ icount->brk++;
+ if (new_lsr & LSR_OVER_ERR)
+ icount->overrun++;
+ if (new_lsr & LSR_PAR_ERR)
+ icount->parity++;
+ if (new_lsr & LSR_FRM_ERR)
+ icount->frame++;
+}
+
+static void edge_interrupt_callback(struct urb *urb)
+{
+ struct edgeport_serial *edge_serial = urb->context;
+ struct usb_serial_port *port;
+ struct edgeport_port *edge_port;
+ struct device *dev;
+ unsigned char *data = urb->transfer_buffer;
+ int length = urb->actual_length;
+ int port_number;
+ int function;
+ int retval;
+ __u8 lsr;
+ __u8 msr;
+ int status = urb->status;
+
+ switch (status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
+ __func__, status);
+ return;
+ default:
+ dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
+ "%d\n", __func__, status);
+ goto exit;
+ }
+
+ if (!length) {
+ dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
+ goto exit;
+ }
+
+ dev = &edge_serial->serial->dev->dev;
+ usb_serial_debug_data(dev, __func__, length, data);
+
+ if (length != 2) {
+ dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
+ goto exit;
+ }
+
+ port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
+ function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
+ dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
+ port_number, function, data[1]);
+
+ if (port_number >= edge_serial->serial->num_ports) {
+ dev_err(dev, "bad port number %d\n", port_number);
+ goto exit;
+ }
+
+ port = edge_serial->serial->port[port_number];
+ edge_port = usb_get_serial_port_data(port);
+ if (!edge_port) {
+ dev_dbg(dev, "%s - edge_port not found\n", __func__);
+ return;
+ }
+ switch (function) {
+ case TIUMP_INTERRUPT_CODE_LSR:
+ lsr = map_line_status(data[1]);
+ if (lsr & UMP_UART_LSR_DATA_MASK) {
+ /*
+ * Save the LSR event for bulk read completion routine
+ */
+ dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
+ __func__, port_number, lsr);
+ edge_port->lsr_event = 1;
+ edge_port->lsr_mask = lsr;
+ } else {
+ dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
+ __func__, port_number, lsr);
+ handle_new_lsr(edge_port, 0, lsr, 0);
+ }
+ break;
+
+ case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
+ /* Copy MSR from UMP */
+ msr = data[1];
+ dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
+ __func__, port_number, msr);
+ handle_new_msr(edge_port, msr);
+ break;
+
+ default:
+ dev_err(&urb->dev->dev,
+ "%s - Unknown Interrupt code from UMP %x\n",
+ __func__, data[1]);
+ break;
+
+ }
+
+exit:
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval)
+ dev_err(&urb->dev->dev,
+ "%s - usb_submit_urb failed with result %d\n",
+ __func__, retval);
+}
+
+static void edge_bulk_in_callback(struct urb *urb)
+{
+ struct edgeport_port *edge_port = urb->context;
+ struct device *dev = &edge_port->port->dev;
+ unsigned char *data = urb->transfer_buffer;
+ unsigned long flags;
+ int retval = 0;
+ int port_number;
+ int status = urb->status;
+
+ switch (status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
+ return;
+ default:
+ dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
+ }
+
+ if (status == -EPIPE)
+ goto exit;
+
+ if (status) {
+ dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
+ return;
+ }
+
+ port_number = edge_port->port->port_number;
+
+ if (urb->actual_length > 0 && edge_port->lsr_event) {
+ edge_port->lsr_event = 0;
+ dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
+ __func__, port_number, edge_port->lsr_mask, *data);
+ handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
+ /* Adjust buffer length/pointer */
+ --urb->actual_length;
+ ++data;
+ }
+
+ if (urb->actual_length) {
+ usb_serial_debug_data(dev, __func__, urb->actual_length, data);
+ if (edge_port->close_pending)
+ dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
+ __func__);
+ else
+ edge_tty_recv(edge_port->port, data,
+ urb->actual_length);
+ edge_port->port->icount.rx += urb->actual_length;
+ }
+
+exit:
+ /* continue read unless stopped */
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
+ edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
+
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+ if (retval)
+ dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
+}
+
+static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
+ int length)
+{
+ int queued;
+
+ queued = tty_insert_flip_string(&port->port, data, length);
+ if (queued < length)
+ dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
+ __func__, length - queued);
+ tty_flip_buffer_push(&port->port);
+}
+
+static void edge_bulk_out_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int status = urb->status;
+ struct tty_struct *tty;
+
+ edge_port->ep_write_urb_in_use = 0;
+
+ switch (status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
+ __func__, status);
+ return;
+ default:
+ dev_err_console(port, "%s - nonzero write bulk status "
+ "received: %d\n", __func__, status);
+ }
+
+ /* send any buffered data */
+ tty = tty_port_tty_get(&port->port);
+ edge_send(port, tty);
+ tty_kref_put(tty);
+}
+
+static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct edgeport_serial *edge_serial;
+ struct usb_device *dev;
+ struct urb *urb;
+ int port_number;
+ int status;
+ u16 open_settings;
+ u8 transaction_timeout;
+
+ if (edge_port == NULL)
+ return -ENODEV;
+
+ port_number = port->port_number;
+
+ dev = port->serial->dev;
+
+ /* turn off loopback */
+ status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
+ if (status) {
+ dev_err(&port->dev,
+ "%s - cannot send clear loopback command, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ /* set up the port settings */
+ if (tty)
+ edge_set_termios(tty, port, &tty->termios);
+
+ /* open up the port */
+
+ /* milliseconds to timeout for DMA transfer */
+ transaction_timeout = 2;
+
+ edge_port->ump_read_timeout =
+ max(20, ((transaction_timeout * 3) / 2));
+
+ /* milliseconds to timeout for DMA transfer */
+ open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
+ UMP_PIPE_TRANS_TIMEOUT_ENA |
+ (transaction_timeout << 2));
+
+ dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
+
+ /* Tell TI to open and start the port */
+ status = send_cmd(dev, UMPC_OPEN_PORT,
+ (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
+ if (status) {
+ dev_err(&port->dev, "%s - cannot send open command, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ /* Start the DMA? */
+ status = send_cmd(dev, UMPC_START_PORT,
+ (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
+ if (status) {
+ dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ /* Clear TX and RX buffers in UMP */
+ status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
+ if (status) {
+ dev_err(&port->dev,
+ "%s - cannot send clear buffers command, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ /* Read Initial MSR */
+ status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
+ (__u16)(UMPM_UART1_PORT + port_number),
+ &edge_port->shadow_msr, 1);
+ if (status) {
+ dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
+
+ /* Set Initial MCR */
+ edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
+ dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
+
+ edge_serial = edge_port->edge_serial;
+ if (mutex_lock_interruptible(&edge_serial->es_lock))
+ return -ERESTARTSYS;
+ if (edge_serial->num_ports_open == 0) {
+ /* we are the first port to open, post the interrupt urb */
+ urb = edge_serial->serial->port[0]->interrupt_in_urb;
+ urb->context = edge_serial;
+ status = usb_submit_urb(urb, GFP_KERNEL);
+ if (status) {
+ dev_err(&port->dev,
+ "%s - usb_submit_urb failed with value %d\n",
+ __func__, status);
+ goto release_es_lock;
+ }
+ }
+
+ /*
+ * reset the data toggle on the bulk endpoints to work around bug in
+ * host controllers where things get out of sync some times
+ */
+ usb_clear_halt(dev, port->write_urb->pipe);
+ usb_clear_halt(dev, port->read_urb->pipe);
+
+ /* start up our bulk read urb */
+ urb = port->read_urb;
+ edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
+ urb->context = edge_port;
+ status = usb_submit_urb(urb, GFP_KERNEL);
+ if (status) {
+ dev_err(&port->dev,
+ "%s - read bulk usb_submit_urb failed with value %d\n",
+ __func__, status);
+ goto unlink_int_urb;
+ }
+
+ ++edge_serial->num_ports_open;
+
+ goto release_es_lock;
+
+unlink_int_urb:
+ if (edge_port->edge_serial->num_ports_open == 0)
+ usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
+release_es_lock:
+ mutex_unlock(&edge_serial->es_lock);
+ return status;
+}
+
+static void edge_close(struct usb_serial_port *port)
+{
+ struct edgeport_serial *edge_serial;
+ struct edgeport_port *edge_port;
+ struct usb_serial *serial = port->serial;
+ unsigned long flags;
+ int port_number;
+
+ edge_serial = usb_get_serial_data(port->serial);
+ edge_port = usb_get_serial_port_data(port);
+ if (edge_serial == NULL || edge_port == NULL)
+ return;
+
+ /*
+ * The bulkreadcompletion routine will check
+ * this flag and dump add read data
+ */
+ edge_port->close_pending = 1;
+
+ usb_kill_urb(port->read_urb);
+ usb_kill_urb(port->write_urb);
+ edge_port->ep_write_urb_in_use = 0;
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ kfifo_reset_out(&port->write_fifo);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
+ port_number = port->port_number;
+ send_cmd(serial->dev, UMPC_CLOSE_PORT,
+ (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
+
+ mutex_lock(&edge_serial->es_lock);
+ --edge_port->edge_serial->num_ports_open;
+ if (edge_port->edge_serial->num_ports_open <= 0) {
+ /* last port is now closed, let's shut down our interrupt urb */
+ usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
+ edge_port->edge_serial->num_ports_open = 0;
+ }
+ mutex_unlock(&edge_serial->es_lock);
+ edge_port->close_pending = 0;
+}
+
+static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *data, int count)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+
+ if (count == 0) {
+ dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
+ return 0;
+ }
+
+ if (edge_port == NULL)
+ return -ENODEV;
+ if (edge_port->close_pending == 1)
+ return -ENODEV;
+
+ count = kfifo_in_locked(&port->write_fifo, data, count,
+ &edge_port->ep_lock);
+ edge_send(port, tty);
+
+ return count;
+}
+
+static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
+{
+ int count, result;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned long flags;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+
+ if (edge_port->ep_write_urb_in_use) {
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+ return;
+ }
+
+ count = kfifo_out(&port->write_fifo,
+ port->write_urb->transfer_buffer,
+ port->bulk_out_size);
+
+ if (count == 0) {
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+ return;
+ }
+
+ edge_port->ep_write_urb_in_use = 1;
+
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
+
+ /* set up our urb */
+ port->write_urb->transfer_buffer_length = count;
+
+ /* send the data out the bulk port */
+ result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ if (result) {
+ dev_err_console(port,
+ "%s - failed submitting write urb, error %d\n",
+ __func__, result);
+ edge_port->ep_write_urb_in_use = 0;
+ /* TODO: reschedule edge_send */
+ } else
+ edge_port->port->icount.tx += count;
+
+ /*
+ * wakeup any process waiting for writes to complete
+ * there is now more room in the buffer for new writes
+ */
+ if (tty)
+ tty_wakeup(tty);
+}
+
+static int edge_write_room(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int room = 0;
+ unsigned long flags;
+
+ if (edge_port == NULL)
+ return 0;
+ if (edge_port->close_pending == 1)
+ return 0;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ room = kfifo_avail(&port->write_fifo);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
+ return room;
+}
+
+static int edge_chars_in_buffer(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int chars = 0;
+ unsigned long flags;
+ if (edge_port == NULL)
+ return 0;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ chars = kfifo_len(&port->write_fifo);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
+ return chars;
+}
+
+static bool edge_tx_empty(struct usb_serial_port *port)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int ret;
+
+ ret = tx_active(edge_port);
+ if (ret > 0)
+ return false;
+
+ return true;
+}
+
+static void edge_throttle(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int status;
+
+ if (edge_port == NULL)
+ return;
+
+ /* if we are implementing XON/XOFF, send the stop character */
+ if (I_IXOFF(tty)) {
+ unsigned char stop_char = STOP_CHAR(tty);
+ status = edge_write(tty, port, &stop_char, 1);
+ if (status <= 0) {
+ dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
+ }
+ }
+
+ /*
+ * if we are implementing RTS/CTS, stop reads
+ * and the Edgeport will clear the RTS line
+ */
+ if (C_CRTSCTS(tty))
+ stop_read(edge_port);
+
+}
+
+static void edge_unthrottle(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int status;
+
+ if (edge_port == NULL)
+ return;
+
+ /* if we are implementing XON/XOFF, send the start character */
+ if (I_IXOFF(tty)) {
+ unsigned char start_char = START_CHAR(tty);
+ status = edge_write(tty, port, &start_char, 1);
+ if (status <= 0) {
+ dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
+ }
+ }
+ /*
+ * if we are implementing RTS/CTS, restart reads
+ * are the Edgeport will assert the RTS line
+ */
+ if (C_CRTSCTS(tty)) {
+ status = restart_read(edge_port);
+ if (status)
+ dev_err(&port->dev,
+ "%s - read bulk usb_submit_urb failed: %d\n",
+ __func__, status);
+ }
+
+}
+
+static void stop_read(struct edgeport_port *edge_port)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+
+ if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
+ edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
+ edge_port->shadow_mcr &= ~MCR_RTS;
+
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+}
+
+static int restart_read(struct edgeport_port *edge_port)
+{
+ struct urb *urb;
+ int status = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+
+ if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
+ urb = edge_port->port->read_urb;
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+ }
+ edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
+ edge_port->shadow_mcr |= MCR_RTS;
+
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ return status;
+}
+
+static void change_port_settings(struct tty_struct *tty,
+ struct edgeport_port *edge_port, struct ktermios *old_termios)
+{
+ struct device *dev = &edge_port->port->dev;
+ struct ump_uart_config *config;
+ int baud;
+ unsigned cflag;
+ int status;
+ int port_number = edge_port->port->port_number;
+
+ config = kmalloc (sizeof (*config), GFP_KERNEL);
+ if (!config) {
+ tty->termios = *old_termios;
+ return;
+ }
+
+ cflag = tty->termios.c_cflag;
+
+ config->wFlags = 0;
+
+ /* These flags must be set */
+ config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
+ config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
+ config->bUartMode = (__u8)(edge_port->bUartMode);
+
+ switch (cflag & CSIZE) {
+ case CS5:
+ config->bDataBits = UMP_UART_CHAR5BITS;
+ dev_dbg(dev, "%s - data bits = 5\n", __func__);
+ break;
+ case CS6:
+ config->bDataBits = UMP_UART_CHAR6BITS;
+ dev_dbg(dev, "%s - data bits = 6\n", __func__);
+ break;
+ case CS7:
+ config->bDataBits = UMP_UART_CHAR7BITS;
+ dev_dbg(dev, "%s - data bits = 7\n", __func__);
+ break;
+ default:
+ case CS8:
+ config->bDataBits = UMP_UART_CHAR8BITS;
+ dev_dbg(dev, "%s - data bits = 8\n", __func__);
+ break;
+ }
+
+ if (cflag & PARENB) {
+ if (cflag & PARODD) {
+ config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
+ config->bParity = UMP_UART_ODDPARITY;
+ dev_dbg(dev, "%s - parity = odd\n", __func__);
+ } else {
+ config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
+ config->bParity = UMP_UART_EVENPARITY;
+ dev_dbg(dev, "%s - parity = even\n", __func__);
+ }
+ } else {
+ config->bParity = UMP_UART_NOPARITY;
+ dev_dbg(dev, "%s - parity = none\n", __func__);
+ }
+
+ if (cflag & CSTOPB) {
+ config->bStopBits = UMP_UART_STOPBIT2;
+ dev_dbg(dev, "%s - stop bits = 2\n", __func__);
+ } else {
+ config->bStopBits = UMP_UART_STOPBIT1;
+ dev_dbg(dev, "%s - stop bits = 1\n", __func__);
+ }
+
+ /* figure out the flow control settings */
+ if (cflag & CRTSCTS) {
+ config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
+ config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
+ dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
+ } else {
+ dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
+ restart_read(edge_port);
+ }
+
+ /*
+ * if we are implementing XON/XOFF, set the start and stop
+ * character in the device
+ */
+ config->cXon = START_CHAR(tty);
+ config->cXoff = STOP_CHAR(tty);
+
+ /* if we are implementing INBOUND XON/XOFF */
+ if (I_IXOFF(tty)) {
+ config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
+ dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
+ __func__, config->cXon, config->cXoff);
+ } else
+ dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
+
+ /* if we are implementing OUTBOUND XON/XOFF */
+ if (I_IXON(tty)) {
+ config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
+ dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
+ __func__, config->cXon, config->cXoff);
+ } else
+ dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
+
+ tty->termios.c_cflag &= ~CMSPAR;
+
+ /* Round the baud rate */
+ baud = tty_get_baud_rate(tty);
+ if (!baud) {
+ /* pick a default, any default... */
+ baud = 9600;
+ } else {
+ /* Avoid a zero divisor. */
+ baud = min(baud, 461550);
+ tty_encode_baud_rate(tty, baud, baud);
+ }
+
+ edge_port->baud_rate = baud;
+ config->wBaudRate = (__u16)((461550L + baud/2) / baud);
+
+ /* FIXME: Recompute actual baud from divisor here */
+
+ dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
+
+ dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
+ dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
+ dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
+ dev_dbg(dev, "bParity: %d\n", config->bParity);
+ dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
+ dev_dbg(dev, "cXon: %d\n", config->cXon);
+ dev_dbg(dev, "cXoff: %d\n", config->cXoff);
+ dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
+
+ /* move the word values into big endian mode */
+ cpu_to_be16s(&config->wFlags);
+ cpu_to_be16s(&config->wBaudRate);
+
+ status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 0, (__u8 *)config, sizeof(*config));
+ if (status)
+ dev_dbg(dev, "%s - error %d when trying to write config to device\n",
+ __func__, status);
+ kfree(config);
+}
+
+static void edge_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old_termios)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+
+ if (edge_port == NULL)
+ return;
+ /* change the port settings to the new ones specified */
+ change_port_settings(tty, edge_port, old_termios);
+}
+
+static int edge_tiocmset(struct tty_struct *tty,
+ unsigned int set, unsigned int clear)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned int mcr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ mcr = edge_port->shadow_mcr;
+ if (set & TIOCM_RTS)
+ mcr |= MCR_RTS;
+ if (set & TIOCM_DTR)
+ mcr |= MCR_DTR;
+ if (set & TIOCM_LOOP)
+ mcr |= MCR_LOOPBACK;
+
+ if (clear & TIOCM_RTS)
+ mcr &= ~MCR_RTS;
+ if (clear & TIOCM_DTR)
+ mcr &= ~MCR_DTR;
+ if (clear & TIOCM_LOOP)
+ mcr &= ~MCR_LOOPBACK;
+
+ edge_port->shadow_mcr = mcr;
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ restore_mcr(edge_port, mcr);
+ return 0;
+}
+
+static int edge_tiocmget(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned int result = 0;
+ unsigned int msr;
+ unsigned int mcr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+
+ msr = edge_port->shadow_msr;
+ mcr = edge_port->shadow_mcr;
+ result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
+ | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
+ | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
+ | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
+ | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
+ | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
+
+
+ dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ return result;
+}
+
+static int get_serial_info(struct edgeport_port *edge_port,
+ struct serial_struct __user *retinfo)
+{
+ struct serial_struct tmp;
+ unsigned cwait;
+
+ cwait = edge_port->port->port.closing_wait;
+ if (cwait != ASYNC_CLOSING_WAIT_NONE)
+ cwait = jiffies_to_msecs(cwait) / 10;
+
+ memset(&tmp, 0, sizeof(tmp));
+
+ tmp.type = PORT_16550A;
+ tmp.line = edge_port->port->minor;
+ tmp.port = edge_port->port->port_number;
+ tmp.irq = 0;
+ tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
+ tmp.baud_base = 9600;
+ tmp.close_delay = 5*HZ;
+ tmp.closing_wait = cwait;
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+ return 0;
+}
+
+static int edge_ioctl(struct tty_struct *tty,
+ unsigned int cmd, unsigned long arg)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+
+ switch (cmd) {
+ case TIOCGSERIAL:
+ dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
+ return get_serial_info(edge_port,
+ (struct serial_struct __user *) arg);
+ }
+ return -ENOIOCTLCMD;
+}
+
+static void edge_break(struct tty_struct *tty, int break_state)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int status;
+ int bv = 0; /* Off */
+
+ if (break_state == -1)
+ bv = 1; /* On */
+ status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
+ if (status)
+ dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
+ __func__, status);
+}
+
+static void edge_heartbeat_schedule(struct edgeport_serial *edge_serial)
+{
+ if (!edge_serial->use_heartbeat)
+ return;
+
+ schedule_delayed_work(&edge_serial->heartbeat_work,
+ FW_HEARTBEAT_SECS * HZ);
+}
+
+static void edge_heartbeat_work(struct work_struct *work)
+{
+ struct edgeport_serial *serial;
+ struct ti_i2c_desc *rom_desc;
+
+ serial = container_of(work, struct edgeport_serial,
+ heartbeat_work.work);
+
+ rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
+
+ /* Descriptor address request is enough to reset the firmware timer */
+ if (!rom_desc || !get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
+ rom_desc)) {
+ dev_err(&serial->serial->interface->dev,
+ "%s - Incomplete heartbeat\n", __func__);
+ }
+ kfree(rom_desc);
+
+ edge_heartbeat_schedule(serial);
+}
+
+static int edge_calc_num_ports(struct usb_serial *serial,
+ struct usb_serial_endpoints *epds)
+{
+ struct device *dev = &serial->interface->dev;
+ unsigned char num_ports = serial->type->num_ports;
+
+ /* Make sure we have the required endpoints when in download mode. */
+ if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) {
+ if (epds->num_bulk_in < num_ports ||
+ epds->num_bulk_out < num_ports ||
+ epds->num_interrupt_in < 1) {
+ dev_err(dev, "required endpoints missing\n");
+ return -ENODEV;
+ }
+ }
+
+ return num_ports;
+}
+
+static int edge_startup(struct usb_serial *serial)
+{
+ struct edgeport_serial *edge_serial;
+ int status;
+ u16 product_id;
+
+ /* create our private serial structure */
+ edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
+ if (!edge_serial)
+ return -ENOMEM;
+
+ mutex_init(&edge_serial->es_lock);
+ edge_serial->serial = serial;
+ INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work);
+ usb_set_serial_data(serial, edge_serial);
+
+ status = download_fw(edge_serial);
+ if (status < 0) {
+ kfree(edge_serial);
+ return status;
+ }
+
+ if (status > 0)
+ return 1; /* bind but do not register any ports */
+
+ product_id = le16_to_cpu(
+ edge_serial->serial->dev->descriptor.idProduct);
+
+ /* Currently only the EP/416 models require heartbeat support */
+ if (edge_serial->fw_version > FW_HEARTBEAT_VERSION_CUTOFF) {
+ if (product_id == ION_DEVICE_ID_TI_EDGEPORT_416 ||
+ product_id == ION_DEVICE_ID_TI_EDGEPORT_416B) {
+ edge_serial->use_heartbeat = true;
+ }
+ }
+
+ edge_heartbeat_schedule(edge_serial);
+
+ return 0;
+}
+
+static void edge_disconnect(struct usb_serial *serial)
+{
+ struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
+
+ cancel_delayed_work_sync(&edge_serial->heartbeat_work);
+}
+
+static void edge_release(struct usb_serial *serial)
+{
+ struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
+
+ cancel_delayed_work_sync(&edge_serial->heartbeat_work);
+ kfree(edge_serial);
+}
+
+static int edge_port_probe(struct usb_serial_port *port)
+{
+ struct edgeport_port *edge_port;
+ int ret;
+
+ edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
+ if (!edge_port)
+ return -ENOMEM;
+
+ spin_lock_init(&edge_port->ep_lock);
+ edge_port->port = port;
+ edge_port->edge_serial = usb_get_serial_data(port->serial);
+ edge_port->bUartMode = default_uart_mode;
+
+ switch (port->port_number) {
+ case 0:
+ edge_port->uart_base = UMPMEM_BASE_UART1;
+ edge_port->dma_address = UMPD_OEDB1_ADDRESS;
+ break;
+ case 1:
+ edge_port->uart_base = UMPMEM_BASE_UART2;
+ edge_port->dma_address = UMPD_OEDB2_ADDRESS;
+ break;
+ default:
+ dev_err(&port->dev, "unknown port number\n");
+ ret = -ENODEV;
+ goto err;
+ }
+
+ dev_dbg(&port->dev,
+ "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
+ __func__, port->port_number, edge_port->uart_base,
+ edge_port->dma_address);
+
+ usb_set_serial_port_data(port, edge_port);
+
+ ret = edge_create_sysfs_attrs(port);
+ if (ret)
+ goto err;
+
+ port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
+ port->port.drain_delay = 1;
+
+ return 0;
+err:
+ kfree(edge_port);
+
+ return ret;
+}
+
+static int edge_port_remove(struct usb_serial_port *port)
+{
+ struct edgeport_port *edge_port;
+
+ edge_port = usb_get_serial_port_data(port);
+ edge_remove_sysfs_attrs(port);
+ kfree(edge_port);
+
+ return 0;
+}
+
+/* Sysfs Attributes */
+
+static ssize_t uart_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct usb_serial_port *port = to_usb_serial_port(dev);
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+
+ return sprintf(buf, "%d\n", edge_port->bUartMode);
+}
+
+static ssize_t uart_mode_store(struct device *dev,
+ struct device_attribute *attr, const char *valbuf, size_t count)
+{
+ struct usb_serial_port *port = to_usb_serial_port(dev);
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned int v = simple_strtoul(valbuf, NULL, 0);
+
+ dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
+
+ if (v < 256)
+ edge_port->bUartMode = v;
+ else
+ dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
+
+ return count;
+}
+static DEVICE_ATTR_RW(uart_mode);
+
+static int edge_create_sysfs_attrs(struct usb_serial_port *port)
+{
+ return device_create_file(&port->dev, &dev_attr_uart_mode);
+}
+
+static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
+{
+ device_remove_file(&port->dev, &dev_attr_uart_mode);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int edge_suspend(struct usb_serial *serial, pm_message_t message)
+{
+ struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
+
+ cancel_delayed_work_sync(&edge_serial->heartbeat_work);
+
+ return 0;
+}
+
+static int edge_resume(struct usb_serial *serial)
+{
+ struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
+
+ edge_heartbeat_schedule(edge_serial);
+
+ return 0;
+}
+#endif
+
+static struct usb_serial_driver edgeport_1port_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "edgeport_ti_1",
+ },
+ .description = "Edgeport TI 1 port adapter",
+ .id_table = edgeport_1port_id_table,
+ .num_ports = 1,
+ .num_bulk_out = 1,
+ .open = edge_open,
+ .close = edge_close,
+ .throttle = edge_throttle,
+ .unthrottle = edge_unthrottle,
+ .attach = edge_startup,
+ .calc_num_ports = edge_calc_num_ports,
+ .disconnect = edge_disconnect,
+ .release = edge_release,
+ .port_probe = edge_port_probe,
+ .port_remove = edge_port_remove,
+ .ioctl = edge_ioctl,
+ .set_termios = edge_set_termios,
+ .tiocmget = edge_tiocmget,
+ .tiocmset = edge_tiocmset,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
+ .write = edge_write,
+ .write_room = edge_write_room,
+ .chars_in_buffer = edge_chars_in_buffer,
+ .tx_empty = edge_tx_empty,
+ .break_ctl = edge_break,
+ .read_int_callback = edge_interrupt_callback,
+ .read_bulk_callback = edge_bulk_in_callback,
+ .write_bulk_callback = edge_bulk_out_callback,
+#ifdef CONFIG_PM
+ .suspend = edge_suspend,
+ .resume = edge_resume,
+#endif
+};
+
+static struct usb_serial_driver edgeport_2port_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "edgeport_ti_2",
+ },
+ .description = "Edgeport TI 2 port adapter",
+ .id_table = edgeport_2port_id_table,
+ .num_ports = 2,
+ .num_bulk_out = 1,
+ .open = edge_open,
+ .close = edge_close,
+ .throttle = edge_throttle,
+ .unthrottle = edge_unthrottle,
+ .attach = edge_startup,
+ .calc_num_ports = edge_calc_num_ports,
+ .disconnect = edge_disconnect,
+ .release = edge_release,
+ .port_probe = edge_port_probe,
+ .port_remove = edge_port_remove,
+ .ioctl = edge_ioctl,
+ .set_termios = edge_set_termios,
+ .tiocmget = edge_tiocmget,
+ .tiocmset = edge_tiocmset,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .get_icount = usb_serial_generic_get_icount,
+ .write = edge_write,
+ .write_room = edge_write_room,
+ .chars_in_buffer = edge_chars_in_buffer,
+ .tx_empty = edge_tx_empty,
+ .break_ctl = edge_break,
+ .read_int_callback = edge_interrupt_callback,
+ .read_bulk_callback = edge_bulk_in_callback,
+ .write_bulk_callback = edge_bulk_out_callback,
+#ifdef CONFIG_PM
+ .suspend = edge_suspend,
+ .resume = edge_resume,
+#endif
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+ &edgeport_1port_device, &edgeport_2port_device, NULL
+};
+
+module_usb_serial_driver(serial_drivers, id_table_combined);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("edgeport/down3.bin");
+
+module_param(closing_wait, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
+
+module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ignore_cpu_rev,
+ "Ignore the cpu revision when connecting to a device");
+
+module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");