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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 22:20:36 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 22:20:36 (GMT)
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/usb/serial/io_ti.c
downloadlinux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/usb/serial/io_ti.c')
-rw-r--r--drivers/usb/serial/io_ti.c3091
1 files changed, 3091 insertions, 0 deletions
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
new file mode 100644
index 0000000..6c96fda
--- /dev/null
+++ b/drivers/usb/serial/io_ti.c
@@ -0,0 +1,3091 @@
+/*
+ * 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>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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>.
+ *
+ * Version history:
+ *
+ * July 11, 2002 Removed 4 port device structure since all TI UMP
+ * chips have only 2 ports
+ * David Iacovelli (davidi@ionetworks.com)
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/errno.h>
+#include <linux/init.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/serial.h>
+#include <linux/ioctl.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <linux/usb.h>
+
+#include "usb-serial.h"
+#include "io_16654.h"
+#include "io_usbvend.h"
+#include "io_ti.h"
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v0.7"
+#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
+#define DRIVER_DESC "Edgeport USB Serial Driver"
+
+
+/* firmware image code */
+#define IMAGE_VERSION_NAME PagableOperationalCodeImageVersion
+#define IMAGE_ARRAY_NAME PagableOperationalCodeImage
+#define IMAGE_SIZE PagableOperationalCodeSize
+#include "io_fw_down3.h" /* Define array OperationalCodeImage[] */
+
+#define EPROM_PAGE_SIZE 64
+
+
+struct edgeport_uart_buf_desc {
+ __u32 count; // Number of bytes currently in buffer
+};
+
+/* 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_LOW_LATENCY 1
+#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
+
+#define EDGE_OUT_BUF_SIZE 1024
+
+
+/* Product information read from the Edgeport */
+struct product_info
+{
+ int TiMode; // Current TI Mode
+ __u8 hardware_type; // Type of hardware
+} __attribute__((packed));
+
+/* circular buffer */
+struct edge_buf {
+ unsigned int buf_size;
+ char *buf_buf;
+ char *buf_get;
+ char *buf_put;
+};
+
+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 miliseconds the UMP will
+ wait without data before completing
+ a read short */
+ int baud_rate;
+ int close_pending;
+ int lsr_event;
+ struct edgeport_uart_buf_desc tx;
+ struct async_icount icount;
+ wait_queue_head_t delta_msr_wait; /* for handling sleeping while
+ waiting for msr change to
+ happen */
+ 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 edge_buf *ep_out_buf;
+};
+
+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 semaphore es_sem;
+ int num_ports_open;
+ struct usb_serial *serial;
+};
+
+
+/* Devices that this driver supports */
+static 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 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-port shows up as two 2-port devices
+ { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
+ { }
+};
+
+/* Devices that this driver supports */
+static 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) },
+ { }
+};
+
+MODULE_DEVICE_TABLE (usb, id_table_combined);
+
+static struct usb_driver io_driver = {
+ .owner = THIS_MODULE,
+ .name = "io_ti",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table_combined,
+};
+
+
+static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
+
+static int debug;
+
+static int TIStayInBootMode = 0;
+static int low_latency = EDGE_LOW_LATENCY;
+static int closing_wait = EDGE_CLOSING_WAIT;
+static int ignore_cpu_rev = 0;
+
+
+static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 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 usb_serial_port *port, struct termios *old_termios);
+static void edge_send(struct usb_serial_port *port);
+
+/* circular buffer */
+static struct edge_buf *edge_buf_alloc(unsigned int size);
+static void edge_buf_free(struct edge_buf *eb);
+static void edge_buf_clear(struct edge_buf *eb);
+static unsigned int edge_buf_data_avail(struct edge_buf *eb);
+static unsigned int edge_buf_space_avail(struct edge_buf *eb);
+static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
+ unsigned int count);
+static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
+ unsigned int count);
+
+
+static int TIReadVendorRequestSync (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) {
+ dbg ("%s - wanted to write %d, but only wrote %d",
+ __FUNCTION__, size, status);
+ return -ECOMM;
+ }
+ return 0;
+}
+
+static int TISendVendorRequestSync (struct usb_device *dev,
+ __u8 request,
+ __u16 value,
+ __u16 index,
+ u8 *data,
+ int size)
+{
+ 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,
+ 1000);
+ if (status < 0)
+ return status;
+ if (status != size) {
+ dbg ("%s - wanted to write %d, but only wrote %d",
+ __FUNCTION__, size, status);
+ return -ECOMM;
+ }
+ return 0;
+}
+
+static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
+ __u8 moduleid, __u16 value, u8 *data,
+ int size)
+{
+ return TISendVendorRequestSync (dev,
+ command, // Request
+ value, // wValue
+ moduleid, // wIndex
+ data, // TransferBuffer
+ size); // TransferBufferLength
+
+}
+
+/* clear tx/rx buffers and fifo in TI UMP */
+static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
+{
+ int port_number = port->number - port->serial->minor;
+
+ dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask);
+
+ return TIWriteCommandSync (port->serial->dev,
+ UMPC_PURGE_PORT,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ mask,
+ NULL,
+ 0);
+}
+
+/**
+ * TIReadDownloadMemory - 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 TIReadDownloadMemory(struct usb_device *dev, int start_address,
+ int length, __u8 address_type, __u8 *buffer)
+{
+ int status = 0;
+ __u8 read_length;
+ __be16 be_start_address;
+
+ dbg ("%s - @ %x for %d", __FUNCTION__, 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) {
+ dbg ("%s - @ %x for %d", __FUNCTION__,
+ start_address, read_length);
+ }
+ be_start_address = cpu_to_be16 (start_address);
+ status = TIReadVendorRequestSync (dev,
+ UMPC_MEMORY_READ, // Request
+ (__u16)address_type, // wValue (Address type)
+ (__force __u16)be_start_address, // wIndex (Address to read)
+ buffer, // TransferBuffer
+ read_length); // TransferBufferLength
+
+ if (status) {
+ dbg ("%s - ERROR %x", __FUNCTION__, status);
+ return status;
+ }
+
+ if (read_length > 1) {
+ usb_serial_debug_data(debug, &dev->dev, __FUNCTION__,
+ read_length, buffer);
+ }
+
+ /* Update pointers/length */
+ start_address += read_length;
+ buffer += read_length;
+ length -= read_length;
+ }
+
+ return status;
+}
+
+static int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
+{
+ return TIReadDownloadMemory (dev,
+ start_address,
+ length,
+ DTK_ADDR_SPACE_XDATA,
+ buffer);
+}
+
+/* Read edgeport memory to a given block */
+static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
+{
+ int status = 0;
+ int i;
+
+ for (i=0; i< length; i++) {
+ status = TIReadVendorRequestSync (serial->serial->dev,
+ UMPC_MEMORY_READ, // Request
+ serial->TI_I2C_Type, // wValue (Address type)
+ (__u16)(start_address+i), // wIndex
+ &buffer[i], // TransferBuffer
+ 0x01); // TransferBufferLength
+ if (status) {
+ dbg ("%s - ERROR %x", __FUNCTION__, status);
+ return status;
+ }
+ }
+
+ dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length);
+ usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
+
+ serial->TiReadI2C = 1;
+
+ return status;
+}
+
+/* Write given block to TI EPROM memory */
+static int TIWriteBootMemory (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) {
+ status = TIReadBootMemory(serial, 0, 1, &temp);
+ if (status)
+ return status;
+ }
+
+ for (i=0; i < length; ++i) {
+ status = TISendVendorRequestSync (serial->serial->dev,
+ UMPC_MEMORY_WRITE, // Request
+ buffer[i], // wValue
+ (__u16)(i+start_address), // wIndex
+ NULL, // TransferBuffer
+ 0); // TransferBufferLength
+ if (status)
+ return status;
+ }
+
+ dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length);
+ usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
+
+ return status;
+}
+
+
+/* Write edgeport I2C memory to TI chip */
+static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
+{
+ int status = 0;
+ int write_length;
+ __be16 be_start_address;
+
+ /* We can only send a maximum of 1 aligned byte page at a time */
+
+ /* calulate 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;
+
+ dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
+ usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
+
+ /* Write first page */
+ be_start_address = cpu_to_be16 (start_address);
+ status = TISendVendorRequestSync (serial->serial->dev,
+ UMPC_MEMORY_WRITE, // Request
+ (__u16)address_type, // wValue
+ (__force __u16)be_start_address, // wIndex
+ buffer, // TransferBuffer
+ write_length);
+ if (status) {
+ dbg ("%s - ERROR %d", __FUNCTION__, 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;
+
+ dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
+ usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
+
+ /* Write next page */
+ be_start_address = cpu_to_be16 (start_address);
+ status = TISendVendorRequestSync (serial->serial->dev,
+ UMPC_MEMORY_WRITE, // Request
+ (__u16)address_type, // wValue
+ (__force __u16)be_start_address, // wIndex
+ buffer, // TransferBuffer
+ write_length); // TransferBufferLength
+ if (status) {
+ dev_err (&serial->serial->dev->dev, "%s - ERROR %d\n", __FUNCTION__, 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 TIIsTxActive (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) {
+ dev_err (&port->port->dev, "%s - out of memory\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ lsr = kmalloc (1, GFP_KERNEL); /* Sigh, that's right, just one byte,
+ as not all platforms can do DMA
+ from stack */
+ if (!lsr) {
+ kfree(oedb);
+ return -ENOMEM;
+ }
+ /* Read the DMA Count Registers */
+ status = TIReadRam (port->port->serial->dev,
+ port->dma_address,
+ sizeof( *oedb),
+ (void *)oedb);
+
+ if (status)
+ goto exit_is_tx_active;
+
+ dbg ("%s - XByteCount 0x%X", __FUNCTION__, oedb->XByteCount);
+
+ /* and the LSR */
+ status = TIReadRam (port->port->serial->dev,
+ port->uart_base + UMPMEM_OFFS_UART_LSR,
+ 1,
+ lsr);
+
+ if (status)
+ goto exit_is_tx_active;
+ dbg ("%s - LSR = 0x%X", __FUNCTION__, *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:
+ dbg ("%s - return %d", __FUNCTION__, bytes_left );
+
+ kfree(lsr);
+ kfree(oedb);
+ return bytes_left;
+}
+
+static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int flush)
+{
+ int baud_rate;
+ struct tty_struct *tty = port->port->tty;
+ wait_queue_t wait;
+ unsigned long flags;
+
+ if (!timeout)
+ timeout = (HZ*EDGE_CLOSING_WAIT)/100;
+
+ /* wait for data to drain from the buffer */
+ spin_lock_irqsave(&port->ep_lock, flags);
+ init_waitqueue_entry(&wait, current);
+ add_wait_queue(&tty->write_wait, &wait);
+ for (;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (edge_buf_data_avail(port->ep_out_buf) == 0
+ || timeout == 0 || signal_pending(current)
+ || !usb_get_intfdata(port->port->serial->interface)) /* disconnect */
+ break;
+ spin_unlock_irqrestore(&port->ep_lock, flags);
+ timeout = schedule_timeout(timeout);
+ spin_lock_irqsave(&port->ep_lock, flags);
+ }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&tty->write_wait, &wait);
+ if (flush)
+ edge_buf_clear(port->ep_out_buf);
+ spin_unlock_irqrestore(&port->ep_lock, flags);
+
+ /* wait for data to drain from the device */
+ timeout += jiffies;
+ while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
+ && usb_get_intfdata(port->port->serial->interface)) { /* not disconnected */
+ if (!TIIsTxActive(port))
+ break;
+ msleep(10);
+ }
+
+ /* disconnected */
+ if (!usb_get_intfdata(port->port->serial->interface))
+ return;
+
+ /* wait one more character time, based on baud rate */
+ /* (TIIsTxActive doesn't seem to wait for the last byte) */
+ if ((baud_rate=port->baud_rate) == 0)
+ baud_rate = 50;
+ msleep(max(1,(10000+baud_rate-1)/baud_rate));
+}
+
+static int TIChooseConfiguration (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.
+
+ dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->desc.bNumInterfaces);
+ dbg ("%s - MAX Power = %d", __FUNCTION__, dev->config->desc.bMaxPower*2);
+
+ if (dev->config->desc.bNumInterfaces != 1) {
+ dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __FUNCTION__);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
+{
+ int status;
+
+ if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
+ status = TIReadDownloadMemory (serial->serial->dev,
+ start_address,
+ length,
+ serial->TI_I2C_Type,
+ buffer);
+ } else {
+ status = TIReadBootMemory (serial,
+ start_address,
+ length,
+ buffer);
+ }
+
+ return status;
+}
+
+static int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
+{
+ if (serial->product_info.TiMode == TI_MODE_BOOT)
+ return TIWriteBootMemory (serial,
+ start_address,
+ length,
+ buffer);
+
+ if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
+ return TIWriteDownloadI2C (serial,
+ start_address,
+ length,
+ serial->TI_I2C_Type,
+ buffer);
+
+ return -EINVAL;
+}
+
+
+
+/* Read a descriptor header from I2C based on type */
+static int TIGetDescriptorAddress (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 = TIReadRom (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) + rom_desc->Size;
+
+ } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
+
+ return 0;
+}
+
+/* Validate descriptor checksum */
+static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
+{
+ __u16 i;
+ __u8 cs = 0;
+
+ for (i=0; i < rom_desc->Size; i++) {
+ cs = (__u8)(cs + buffer[i]);
+ }
+ if (cs != rom_desc->CheckSum) {
+ dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/* Make sure that the I2C image is good */
+static int TiValidateI2cImage (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) {
+ dev_err (dev, "%s - out of memory\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+ buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
+ if (!buffer) {
+ dev_err (dev, "%s - out of memory when allocating buffer\n", __FUNCTION__);
+ kfree (rom_desc);
+ return -ENOMEM;
+ }
+
+ // Read the first byte (Signature0) must be 0x52 or 0x10
+ status = TIReadRom (serial, 0, 1, buffer);
+ if (status)
+ goto ExitTiValidateI2cImage;
+
+ if (*buffer != UMP5152 && *buffer != UMP3410) {
+ dev_err (dev, "%s - invalid buffer signature\n", __FUNCTION__);
+ status = -ENODEV;
+ goto ExitTiValidateI2cImage;
+ }
+
+ do {
+ // Validate the I2C
+ status = TIReadRom (serial,
+ start_address,
+ sizeof(struct ti_i2c_desc),
+ (__u8 *)rom_desc);
+ if (status)
+ break;
+
+ if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
+ status = -ENODEV;
+ dbg ("%s - structure too big, erroring out.", __FUNCTION__);
+ break;
+ }
+
+ dbg ("%s Type = 0x%x", __FUNCTION__, 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 = TIReadRom(serial,
+ start_address+sizeof(struct ti_i2c_desc),
+ rom_desc->Size,
+ buffer);
+ if (status)
+ break;
+
+ status = ValidChecksum(rom_desc, buffer);
+ if (status)
+ break;
+ }
+ start_address = start_address + sizeof(struct ti_i2c_desc) + 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;
+
+ExitTiValidateI2cImage:
+ kfree (buffer);
+ kfree (rom_desc);
+ return status;
+}
+
+static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
+{
+ int status;
+ int start_address;
+ struct ti_i2c_desc *rom_desc;
+ struct edge_ti_manuf_descriptor *desc;
+
+ rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
+ if (!rom_desc) {
+ dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+ start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
+
+ if (!start_address) {
+ dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__);
+ status = -ENODEV;
+ goto exit;
+ }
+
+ // Read the descriptor data
+ status = TIReadRom (serial,
+ start_address+sizeof(struct ti_i2c_desc),
+ rom_desc->Size,
+ buffer);
+ if (status)
+ goto exit;
+
+ status = ValidChecksum(rom_desc, buffer);
+
+ desc = (struct edge_ti_manuf_descriptor *)buffer;
+ dbg ( "%s - IonConfig 0x%x", __FUNCTION__, desc->IonConfig );
+ dbg ( "%s - Version %d", __FUNCTION__, desc->Version );
+ dbg ( "%s - Cpu/Board 0x%x", __FUNCTION__, desc->CpuRev_BoardRev );
+ dbg ( "%s - NumPorts %d", __FUNCTION__, desc->NumPorts );
+ dbg ( "%s - NumVirtualPorts %d", __FUNCTION__, desc->NumVirtualPorts );
+ dbg ( "%s - TotalPorts %d", __FUNCTION__, desc->TotalPorts );
+
+exit:
+ kfree (rom_desc);
+ return status;
+}
+
+/* Build firmware header used for firmware update */
+static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev)
+{
+ __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;
+
+ // 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) {
+ dev_err (dev, "%s - out of memory\n", __FUNCTION__);
+ 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 = OperationalCodeImageVersion.MajorVersion;
+ firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
+
+ // Pointer to fw_down memory image
+ img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
+
+ memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
+ &PagableOperationalCodeImage[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 = (__u16)buffer_size;
+ i2c_header->CheckSum = cs;
+ firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
+ firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
+
+ return 0;
+}
+
+/* Try to figure out what type of I2c we have */
+static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
+{
+ int status;
+ __u8 data;
+
+ // Try to read type 2
+ status = TIReadVendorRequestSync (serial->serial->dev,
+ UMPC_MEMORY_READ, // Request
+ DTK_ADDR_SPACE_I2C_TYPE_II, // wValue (Address type)
+ 0, // wIndex
+ &data, // TransferBuffer
+ 0x01); // TransferBufferLength
+ if (status)
+ dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
+ else
+ dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
+ if ((!status) && (data == UMP5152 || data == UMP3410)) {
+ dbg ("%s - ROM_TYPE_II", __FUNCTION__);
+ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+ return 0;
+ }
+
+ // Try to read type 3
+ status = TIReadVendorRequestSync (serial->serial->dev,
+ UMPC_MEMORY_READ, // Request
+ DTK_ADDR_SPACE_I2C_TYPE_III, // wValue (Address type)
+ 0, // wIndex
+ &data, // TransferBuffer
+ 0x01); // TransferBufferLength
+ if (status)
+ dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
+ else
+ dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
+ if ((!status) && (data == UMP5152 || data == UMP3410)) {
+ dbg ("%s - ROM_TYPE_III", __FUNCTION__);
+ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
+ return 0;
+ }
+
+ dbg ("%s - Unknown", __FUNCTION__);
+ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
+ return -ENODEV;
+}
+
+static int TISendBulkTransferSync (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 TIDownloadCodeImage (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 = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
+ if (status)
+ break;
+ // Advance buffer pointer
+ pos += done;
+ }
+
+ return status;
+}
+
+// FIXME!!!
+static int TIConfigureBootDevice (struct usb_device *dev)
+{
+ 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 TIDownloadFirmware (struct edgeport_serial *serial)
+{
+ struct device *dev = &serial->serial->dev->dev;
+ int status = 0;
+ int start_address;
+ struct edge_ti_manuf_descriptor *ti_manuf_desc;
+ struct usb_interface_descriptor *interface;
+ int download_cur_ver;
+ int download_new_ver;
+
+ /* 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 = TIChooseConfiguration (serial->serial->dev);
+ if (status)
+ return status;
+
+ interface = &serial->serial->interface->cur_altsetting->desc;
+ if (!interface) {
+ dev_err (dev, "%s - no interface set, error!\n", __FUNCTION__);
+ return -ENODEV;
+ }
+
+ // 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;
+ else
+ // Otherwise we will remain in configuring mode
+ serial->product_info.TiMode = TI_MODE_CONFIGURING;
+
+ // Save Download Version Number
+ OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
+ OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
+ OperationalCodeImageVersion.BuildNumber = PagableOperationalCodeImageVersion.BuildNumber;
+
+ /********************************************************************/
+ /* Download Mode */
+ /********************************************************************/
+ if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
+ struct ti_i2c_desc *rom_desc;
+
+ dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__);
+
+ status = TiValidateI2cImage (serial);
+ if (status) {
+ dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>",
+ __FUNCTION__);
+ 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) {
+ dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+ status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
+ if (status) {
+ kfree (ti_manuf_desc);
+ return status;
+ }
+
+ // Check version number of ION descriptor
+ if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
+ dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
+ TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
+ kfree (ti_manuf_desc);
+ return -EINVAL;
+ }
+
+ rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
+ if (!rom_desc) {
+ dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
+ kfree (ti_manuf_desc);
+ return -ENOMEM;
+ }
+
+ // Search for type 2 record (firmware record)
+ if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
+ struct ti_i2c_firmware_rec *firmware_version;
+ __u8 record;
+
+ dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__);
+
+ firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
+ if (!firmware_version) {
+ dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
+ kfree (rom_desc);
+ kfree (ti_manuf_desc);
+ return -ENOMEM;
+ }
+
+ // Validate version number
+ // Read the descriptor data
+ status = TIReadRom (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 = (OperationalCodeImageVersion.MajorVersion << 8) +
+ (OperationalCodeImageVersion.MinorVersion);
+
+ dbg ("%s - >>>Firmware Versions Device %d.%d Driver %d.%d",
+ __FUNCTION__,
+ firmware_version->Ver_Major,
+ firmware_version->Ver_Minor,
+ OperationalCodeImageVersion.MajorVersion,
+ OperationalCodeImageVersion.MinorVersion);
+
+ // Check if we have an old version in the I2C and update if necessary
+ if (download_cur_ver != download_new_ver) {
+ dbg ("%s - Update I2C Download from %d.%d to %d.%d",
+ __FUNCTION__,
+ firmware_version->Ver_Major,
+ firmware_version->Ver_Minor,
+ OperationalCodeImageVersion.MajorVersion,
+ OperationalCodeImageVersion.MinorVersion);
+
+ // 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.
+
+ record = I2C_DESC_TYPE_FIRMWARE_BLANK;
+
+ // Change the I2C Firmware record type to 0xf2 to trigger an update
+ status = TIWriteRom (serial,
+ start_address,
+ sizeof(record),
+ &record);
+ if (status) {
+ 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 = TIReadRom (serial,
+ start_address,
+ sizeof(record),
+ &record);
+
+ if (status) {
+ 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", __FUNCTION__);
+ kfree (firmware_version);
+ kfree (rom_desc);
+ kfree (ti_manuf_desc);
+ return -ENODEV;
+ }
+
+ dbg ("%s - HARDWARE RESET", __FUNCTION__);
+
+ // Reset UMP -- Back to BOOT MODE
+ status = TISendVendorRequestSync (serial->serial->dev,
+ UMPC_HARDWARE_RESET, // Request
+ 0, // wValue
+ 0, // wIndex
+ NULL, // TransferBuffer
+ 0); // TransferBufferLength
+
+ dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status);
+
+ /* return an error on purpose. */
+ kfree (firmware_version);
+ kfree (rom_desc);
+ kfree (ti_manuf_desc);
+ return -ENODEV;
+ }
+ kfree (firmware_version);
+ }
+ // Search for type 0xF2 record (firmware blank record)
+ else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 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) {
+ dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
+ kfree (rom_desc);
+ kfree (ti_manuf_desc);
+ return -ENOMEM;
+ }
+
+ vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
+ if (!vheader) {
+ dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
+ kfree (header);
+ kfree (rom_desc);
+ kfree (ti_manuf_desc);
+ return -ENOMEM;
+ }
+
+ dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__);
+
+ // 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.
+ status = BuildI2CFirmwareHeader(header, dev);
+ if (status) {
+ kfree (vheader);
+ kfree (header);
+ kfree (rom_desc);
+ kfree (ti_manuf_desc);
+ return status;
+ }
+
+ // Update I2C with type 0xf2 record with correct size and checksum
+ status = TIWriteRom (serial,
+ start_address,
+ HEADER_SIZE,
+ header);
+ if (status) {
+ kfree (vheader);
+ kfree (header);
+ 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 = TIReadRom (serial,
+ start_address,
+ HEADER_SIZE,
+ vheader);
+
+ if (status) {
+ dbg ("%s - can't read header back", __FUNCTION__);
+ kfree (vheader);
+ kfree (header);
+ kfree (rom_desc);
+ kfree (ti_manuf_desc);
+ return status;
+ }
+ if (memcmp(vheader, header, HEADER_SIZE)) {
+ dbg ("%s - write download record failed", __FUNCTION__);
+ kfree (vheader);
+ kfree (header);
+ kfree (rom_desc);
+ kfree (ti_manuf_desc);
+ return status;
+ }
+
+ kfree (vheader);
+ kfree (header);
+
+ dbg ("%s - Start firmware update", __FUNCTION__);
+
+ // Tell firmware to copy download image into I2C
+ status = TISendVendorRequestSync (serial->serial->dev,
+ UMPC_COPY_DNLD_TO_I2C, // Request
+ 0, // wValue
+ 0, // wIndex
+ NULL, // TransferBuffer
+ 0); // TransferBufferLength
+
+ dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
+ if (status) {
+ dev_err (dev, "%s - UMPC_COPY_DNLD_TO_I2C failed\n", __FUNCTION__);
+ 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;
+ }
+
+ /********************************************************************/
+ /* Boot Mode */
+ /********************************************************************/
+ dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>",
+ __FUNCTION__);
+
+ // Configure the TI device so we can use the BULK pipes for download
+ status = TIConfigureBootDevice (serial->serial->dev);
+ if (status)
+ return status;
+
+ if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) != USB_VENDOR_ID_ION) {
+ dbg ("%s - VID = 0x%x", __FUNCTION__,
+ 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 (TIGetI2cTypeInBootMode(serial)) {
+ goto StayInBootMode;
+ }
+
+ // Registry variable set?
+ if (TIStayInBootMode) {
+ dbg ("%s - TIStayInBootMode", __FUNCTION__);
+ goto StayInBootMode;
+ }
+
+ // Check for ION Vendor ID and that the I2C is valid
+ if (!TiValidateI2cImage(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) {
+ dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+ status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
+ if (status) {
+ kfree (ti_manuf_desc);
+ goto StayInBootMode;
+ }
+
+ // Check for version 2
+ if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
+ dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
+ TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
+ 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.
+ // 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.
+
+ /*
+ * 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) {
+ dev_err (dev, "%s - out of memory\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ // Initialize the buffer to 0xff (pad the buffer)
+ memset (buffer, 0xff, buffer_size);
+
+ memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
+
+ 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
+ dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__);
+ status = TIDownloadCodeImage (serial, buffer, buffer_size);
+
+ kfree (buffer);
+
+ if (status) {
+ dbg ("%s - Error downloading operational code image", __FUNCTION__);
+ return status;
+ }
+
+ // Device will reboot
+ serial->product_info.TiMode = TI_MODE_TRANSITIONING;
+
+ dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__);
+
+ /* return an error on purpose */
+ return -ENODEV;
+ }
+
+StayInBootMode:
+ // Eprom is invalid or blank stay in boot mode
+ dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__);
+ serial->product_info.TiMode = TI_MODE_BOOT;
+
+ return 0;
+}
+
+
+static int TISetDtr (struct edgeport_port *port)
+{
+ int port_number = port->port->number - port->port->serial->minor;
+
+ dbg ("%s", __FUNCTION__);
+ port->shadow_mcr |= MCR_DTR;
+
+ return TIWriteCommandSync (port->port->serial->dev,
+ UMPC_SET_CLR_DTR,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 1, /* set */
+ NULL,
+ 0);
+}
+
+static int TIClearDtr (struct edgeport_port *port)
+{
+ int port_number = port->port->number - port->port->serial->minor;
+
+ dbg ("%s", __FUNCTION__);
+ port->shadow_mcr &= ~MCR_DTR;
+
+ return TIWriteCommandSync (port->port->serial->dev,
+ UMPC_SET_CLR_DTR,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 0, /* clear */
+ NULL,
+ 0);
+}
+
+static int TISetRts (struct edgeport_port *port)
+{
+ int port_number = port->port->number - port->port->serial->minor;
+
+ dbg ("%s", __FUNCTION__);
+ port->shadow_mcr |= MCR_RTS;
+
+ return TIWriteCommandSync (port->port->serial->dev,
+ UMPC_SET_CLR_RTS,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 1, /* set */
+ NULL,
+ 0);
+}
+
+static int TIClearRts (struct edgeport_port *port)
+{
+ int port_number = port->port->number - port->port->serial->minor;
+
+ dbg ("%s", __FUNCTION__);
+ port->shadow_mcr &= ~MCR_RTS;
+
+ return TIWriteCommandSync (port->port->serial->dev,
+ UMPC_SET_CLR_RTS,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 0, /* clear */
+ NULL,
+ 0);
+}
+
+static int TISetLoopBack (struct edgeport_port *port)
+{
+ int port_number = port->port->number - port->port->serial->minor;
+
+ dbg ("%s", __FUNCTION__);
+
+ return TIWriteCommandSync (port->port->serial->dev,
+ UMPC_SET_CLR_LOOPBACK,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 1, /* set */
+ NULL,
+ 0);
+}
+
+static int TIClearLoopBack (struct edgeport_port *port)
+{
+ int port_number = port->port->number - port->port->serial->minor;
+
+ dbg ("%s", __FUNCTION__);
+
+ return TIWriteCommandSync (port->port->serial->dev,
+ UMPC_SET_CLR_LOOPBACK,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 0, /* clear */
+ NULL,
+ 0);
+}
+
+static int TISetBreak (struct edgeport_port *port)
+{
+ int port_number = port->port->number - port->port->serial->minor;
+
+ dbg ("%s", __FUNCTION__);
+
+ return TIWriteCommandSync (port->port->serial->dev,
+ UMPC_SET_CLR_BREAK,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 1, /* set */
+ NULL,
+ 0);
+}
+
+static int TIClearBreak (struct edgeport_port *port)
+{
+ int port_number = port->port->number - port->port->serial->minor;
+
+ dbg ("%s", __FUNCTION__);
+
+ return TIWriteCommandSync (port->port->serial->dev,
+ UMPC_SET_CLR_BREAK,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 0, /* clear */
+ NULL,
+ 0);
+}
+
+static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
+{
+ int status = 0;
+
+ dbg ("%s - %x", __FUNCTION__, mcr);
+
+ if (mcr & MCR_DTR)
+ status = TISetDtr (port);
+ else
+ status = TIClearDtr (port);
+
+ if (status)
+ return status;
+
+ if (mcr & MCR_RTS)
+ status = TISetRts (port);
+ else
+ status = TIClearRts (port);
+
+ if (status)
+ return status;
+
+ if (mcr & MCR_LOOPBACK)
+ status = TISetLoopBack (port);
+ else
+ status = TIClearLoopBack (port);
+
+ return status;
+}
+
+
+
+/* Convert TI LSR to standard UART flags */
+static __u8 MapLineStatus (__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) /* receive data available */
+ MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* transmit holding register 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;
+
+ dbg ("%s - %02x", __FUNCTION__, msr);
+
+ if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
+ icount = &edge_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->delta_msr_wait);
+ }
+
+ /* Save the new modem status */
+ edge_port->shadow_msr = msr & 0xf0;
+
+ tty = edge_port->port->tty;
+ /* handle CTS flow control */
+ if (tty && C_CRTSCTS(tty)) {
+ if (msr & EDGEPORT_MSR_CTS) {
+ tty->hw_stopped = 0;
+ tty_wakeup(tty);
+ } else {
+ tty->hw_stopped = 1;
+ }
+ }
+
+ return;
+}
+
+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));
+
+ dbg ("%s - %02x", __FUNCTION__, 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_port->port->tty)
+ edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
+
+ /* update input line counters */
+ icount = &edge_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 pt_regs *regs)
+{
+ struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
+ struct usb_serial_port *port;
+ struct edgeport_port *edge_port;
+ unsigned char *data = urb->transfer_buffer;
+ int length = urb->actual_length;
+ int port_number;
+ int function;
+ int status;
+ __u8 lsr;
+ __u8 msr;
+
+ dbg("%s", __FUNCTION__);
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ return;
+ default:
+ dev_err(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __FUNCTION__, urb->status);
+ goto exit;
+ }
+
+ if (!length) {
+ dbg ("%s - no data in urb", __FUNCTION__);
+ goto exit;
+ }
+
+ usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
+
+ if (length != 2) {
+ dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
+ goto exit;
+ }
+
+ port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
+ function = TIUMP_GET_FUNC_FROM_CODE (data[0]);
+ dbg ("%s - port_number %d, function %d, info 0x%x",
+ __FUNCTION__, port_number, function, data[1]);
+ port = edge_serial->serial->port[port_number];
+ edge_port = usb_get_serial_port_data(port);
+ if (!edge_port) {
+ dbg ("%s - edge_port not found", __FUNCTION__);
+ return;
+ }
+ switch (function) {
+ case TIUMP_INTERRUPT_CODE_LSR:
+ lsr = MapLineStatus(data[1]);
+ if (lsr & UMP_UART_LSR_DATA_MASK) {
+ /* Save the LSR event for bulk read completion routine */
+ dbg ("%s - LSR Event Port %u LSR Status = %02x",
+ __FUNCTION__, port_number, lsr);
+ edge_port->lsr_event = 1;
+ edge_port->lsr_mask = lsr;
+ } else {
+ dbg ("%s - ===== Port %d LSR Status = %02x ======",
+ __FUNCTION__, 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];
+ dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
+ __FUNCTION__, port_number, msr);
+ handle_new_msr (edge_port, msr);
+ break;
+
+ default:
+ dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n",
+ __FUNCTION__, data[1]);
+ break;
+
+ }
+
+exit:
+ status = usb_submit_urb (urb, GFP_ATOMIC);
+ if (status)
+ dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
+ __FUNCTION__, status);
+}
+
+static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ struct tty_struct *tty;
+ int status = 0;
+ int port_number;
+
+ dbg("%s", __FUNCTION__);
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ return;
+ default:
+ dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n",
+ __FUNCTION__, urb->status );
+ }
+
+ if (urb->status == -EPIPE)
+ goto exit;
+
+ if (urb->status) {
+ dev_err(&urb->dev->dev,"%s - stopping read!\n", __FUNCTION__);
+ return;
+ }
+
+ port_number = edge_port->port->number - edge_port->port->serial->minor;
+
+ if (edge_port->lsr_event) {
+ edge_port->lsr_event = 0;
+ dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
+ __FUNCTION__, 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;
+ }
+
+ tty = edge_port->port->tty;
+ if (tty && urb->actual_length) {
+ usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, urb->actual_length, data);
+
+ if (edge_port->close_pending) {
+ dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
+ } else {
+ edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length);
+ }
+ edge_port->icount.rx += urb->actual_length;
+ }
+
+exit:
+ /* continue read unless stopped */
+ spin_lock(&edge_port->ep_lock);
+ if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
+ urb->dev = edge_port->port->serial->dev;
+ status = 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(&edge_port->ep_lock);
+ if (status)
+ dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
+ __FUNCTION__, status);
+}
+
+static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
+{
+ int cnt;
+
+ do {
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ tty_flip_buffer_push(tty);
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
+ dev_err(dev, "%s - dropping data, %d bytes lost\n",
+ __FUNCTION__, length);
+ return;
+ }
+ }
+ cnt = min(length, TTY_FLIPBUF_SIZE - tty->flip.count);
+ memcpy(tty->flip.char_buf_ptr, data, cnt);
+ memset(tty->flip.flag_buf_ptr, 0, cnt);
+ tty->flip.char_buf_ptr += cnt;
+ tty->flip.flag_buf_ptr += cnt;
+ tty->flip.count += cnt;
+ data += cnt;
+ length -= cnt;
+ } while (length > 0);
+
+ tty_flip_buffer_push(tty);
+}
+
+static void edge_bulk_out_callback (struct urb *urb, struct pt_regs *regs)
+{
+ struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+
+ dbg ("%s - port %d", __FUNCTION__, port->number);
+
+ edge_port->ep_write_urb_in_use = 0;
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ return;
+ default:
+ dev_err (&urb->dev->dev,"%s - nonzero write bulk status received: %d\n",
+ __FUNCTION__, urb->status);
+ }
+
+ /* send any buffered data */
+ edge_send(port);
+}
+
+static int edge_open (struct usb_serial_port *port, struct file * filp)
+{
+ 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;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return -ENODEV;
+
+ if (port->tty)
+ port->tty->low_latency = low_latency;
+
+ port_number = port->number - port->serial->minor;
+ switch (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");
+ return -ENODEV;
+ }
+
+ dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
+ __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address);
+
+ dev = port->serial->dev;
+
+ memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
+ init_waitqueue_head (&edge_port->delta_msr_wait);
+
+ /* turn off loopback */
+ status = TIClearLoopBack (edge_port);
+ if (status) {
+ dev_err(&port->dev,"%s - cannot send clear loopback command, %d\n",
+ __FUNCTION__, status);
+ return status;
+ }
+
+ /* set up the port settings */
+ edge_set_termios (port, NULL);
+
+ /* 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));
+
+ dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__);
+
+ /* Tell TI to open and start the port */
+ status = TIWriteCommandSync (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", __FUNCTION__, status);
+ return status;
+ }
+
+ /* Start the DMA? */
+ status = TIWriteCommandSync (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", __FUNCTION__, status);
+ return status;
+ }
+
+ /* Clear TX and RX buffers in UMP */
+ status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
+ if (status) {
+ dev_err(&port->dev,"%s - cannot send clear buffers command, %d\n", __FUNCTION__, status);
+ return status;
+ }
+
+ /* Read Initial MSR */
+ status = TIReadVendorRequestSync (dev,
+ UMPC_READ_MSR, // Request
+ 0, // wValue
+ (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
+ &edge_port->shadow_msr, // TransferBuffer
+ 1); // TransferBufferLength
+ if (status) {
+ dev_err(&port->dev,"%s - cannot send read MSR command, %d\n", __FUNCTION__, status);
+ return status;
+ }
+
+ dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
+
+ /* Set Initial MCR */
+ edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
+ dbg ("ShadowMCR 0x%X", edge_port->shadow_mcr);
+
+ edge_serial = edge_port->edge_serial;
+ if (down_interruptible(&edge_serial->es_sem))
+ return -ERESTARTSYS;
+ if (edge_serial->num_ports_open == 0) {
+ /* we are the first port to be opened, let's post the interrupt urb */
+ urb = edge_serial->serial->port[0]->interrupt_in_urb;
+ if (!urb) {
+ dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__);
+ status = -EINVAL;
+ goto up_es_sem;
+ }
+ urb->complete = edge_interrupt_callback;
+ urb->context = edge_serial;
+ urb->dev = dev;
+ status = usb_submit_urb (urb, GFP_KERNEL);
+ if (status) {
+ dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
+ goto up_es_sem;
+ }
+ }
+
+ /*
+ * 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;
+ if (!urb) {
+ dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__);
+ status = -EINVAL;
+ goto unlink_int_urb;
+ }
+ edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
+ urb->complete = edge_bulk_in_callback;
+ urb->context = edge_port;
+ urb->dev = dev;
+ status = usb_submit_urb (urb, GFP_KERNEL);
+ if (status) {
+ dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
+ goto unlink_int_urb;
+ }
+
+ ++edge_serial->num_ports_open;
+
+ dbg("%s - exited", __FUNCTION__);
+
+ goto up_es_sem;
+
+unlink_int_urb:
+ if (edge_port->edge_serial->num_ports_open == 0)
+ usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
+up_es_sem:
+ up(&edge_serial->es_sem);
+ return status;
+}
+
+static void edge_close (struct usb_serial_port *port, struct file *filp)
+{
+ struct edgeport_serial *edge_serial;
+ struct edgeport_port *edge_port;
+ int port_number;
+ int status;
+
+ dbg("%s - port %d", __FUNCTION__, 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;
+
+ /* chase the port close and flush */
+ TIChasePort (edge_port, (HZ*closing_wait)/100, 1);
+
+ usb_kill_urb(port->read_urb);
+ usb_kill_urb(port->write_urb);
+ edge_port->ep_write_urb_in_use = 0;
+
+ /* assuming we can still talk to the device,
+ * send a close port command to it */
+ dbg("%s - send umpc_close_port", __FUNCTION__);
+ port_number = port->number - port->serial->minor;
+ status = TIWriteCommandSync (port->serial->dev,
+ UMPC_CLOSE_PORT,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 0,
+ NULL,
+ 0);
+ down(&edge_serial->es_sem);
+ --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;
+ }
+ up(&edge_serial->es_sem);
+ edge_port->close_pending = 0;
+
+ dbg("%s - exited", __FUNCTION__);
+}
+
+static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned long flags;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (count == 0) {
+ dbg("%s - write request of 0 bytes", __FUNCTION__);
+ return 0;
+ }
+
+ if (edge_port == NULL)
+ return -ENODEV;
+ if (edge_port->close_pending == 1)
+ return -ENODEV;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ count = edge_buf_put(edge_port->ep_out_buf, data, count);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ edge_send(port);
+
+ return count;
+}
+
+static void edge_send(struct usb_serial_port *port)
+{
+ int count, result;
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct tty_struct *tty = port->tty;
+ unsigned long flags;
+
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ 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 = edge_buf_get(edge_port->ep_out_buf,
+ 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(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer);
+
+ /* set up our urb */
+ usb_fill_bulk_urb (port->write_urb, port->serial->dev,
+ usb_sndbulkpipe (port->serial->dev,
+ port->bulk_out_endpointAddress),
+ port->write_urb->transfer_buffer, count,
+ edge_bulk_out_callback,
+ port);
+
+ /* send the data out the bulk port */
+ result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ if (result) {
+ dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result);
+ edge_port->ep_write_urb_in_use = 0;
+ // TODO: reschedule edge_send
+ } else {
+ edge_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) {
+ /* let the tty driver wakeup if it has a special write_wakeup function */
+ tty_wakeup(tty);
+ }
+}
+
+static int edge_write_room (struct usb_serial_port *port)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int room = 0;
+ unsigned long flags;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return -ENODEV;
+ if (edge_port->close_pending == 1)
+ return -ENODEV;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ room = edge_buf_space_avail(edge_port->ep_out_buf);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ dbg("%s - returns %d", __FUNCTION__, room);
+ return room;
+}
+
+static int edge_chars_in_buffer (struct usb_serial_port *port)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int chars = 0;
+ unsigned long flags;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return -ENODEV;
+ if (edge_port->close_pending == 1)
+ return -ENODEV;
+
+ spin_lock_irqsave(&edge_port->ep_lock, flags);
+ chars = edge_buf_data_avail(edge_port->ep_out_buf);
+ spin_unlock_irqrestore(&edge_port->ep_lock, flags);
+
+ dbg ("%s - returns %d", __FUNCTION__, chars);
+ return chars;
+}
+
+static void edge_throttle (struct usb_serial_port *port)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct tty_struct *tty;
+ int status;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return;
+
+ tty = port->tty;
+ if (!tty) {
+ dbg ("%s - no tty available", __FUNCTION__);
+ 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 (port, &stop_char, 1);
+ if (status <= 0) {
+ dev_err(&port->dev, "%s - failed to write stop character, %d\n", __FUNCTION__, 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 usb_serial_port *port)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct tty_struct *tty;
+ int status;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return;
+
+ tty = port->tty;
+ if (!tty) {
+ dbg ("%s - no tty available", __FUNCTION__);
+ 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 (port, &start_char, 1);
+ if (status <= 0) {
+ dev_err(&port->dev, "%s - failed to write start character, %d\n", __FUNCTION__, 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 with value %d\n", __FUNCTION__, 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;
+ urb->complete = edge_bulk_in_callback;
+ urb->context = edge_port;
+ urb->dev = edge_port->port->serial->dev;
+ status = usb_submit_urb(urb, GFP_KERNEL);
+ }
+ 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 edgeport_port *edge_port, struct termios *old_termios)
+{
+ struct ump_uart_config *config;
+ struct tty_struct *tty;
+ int baud;
+ unsigned cflag;
+ int status;
+ int port_number = edge_port->port->number - edge_port->port->serial->minor;
+
+ dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
+
+ tty = edge_port->port->tty;
+ if ((!tty) ||
+ (!tty->termios)) {
+ dbg("%s - no tty structures", __FUNCTION__);
+ return;
+ }
+
+ config = kmalloc (sizeof (*config), GFP_KERNEL);
+ if (!config) {
+ dev_err (&edge_port->port->dev, "%s - out of memory\n", __FUNCTION__);
+ 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;
+ dbg ("%s - data bits = 5", __FUNCTION__);
+ break;
+ case CS6:
+ config->bDataBits = UMP_UART_CHAR6BITS;
+ dbg ("%s - data bits = 6", __FUNCTION__);
+ break;
+ case CS7:
+ config->bDataBits = UMP_UART_CHAR7BITS;
+ dbg ("%s - data bits = 7", __FUNCTION__);
+ break;
+ default:
+ case CS8:
+ config->bDataBits = UMP_UART_CHAR8BITS;
+ dbg ("%s - data bits = 8", __FUNCTION__);
+ break;
+ }
+
+ if (cflag & PARENB) {
+ if (cflag & PARODD) {
+ config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
+ config->bParity = UMP_UART_ODDPARITY;
+ dbg("%s - parity = odd", __FUNCTION__);
+ } else {
+ config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
+ config->bParity = UMP_UART_EVENPARITY;
+ dbg("%s - parity = even", __FUNCTION__);
+ }
+ } else {
+ config->bParity = UMP_UART_NOPARITY;
+ dbg("%s - parity = none", __FUNCTION__);
+ }
+
+ if (cflag & CSTOPB) {
+ config->bStopBits = UMP_UART_STOPBIT2;
+ dbg("%s - stop bits = 2", __FUNCTION__);
+ } else {
+ config->bStopBits = UMP_UART_STOPBIT1;
+ dbg("%s - stop bits = 1", __FUNCTION__);
+ }
+
+ /* 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;
+ dbg("%s - RTS/CTS is enabled", __FUNCTION__);
+ } else {
+ dbg("%s - RTS/CTS is disabled", __FUNCTION__);
+ tty->hw_stopped = 0;
+ restart_read(edge_port);
+ }
+
+ /* if we are implementing XON/XOFF, set the start and stop character in the device */
+ if (I_IXOFF(tty) || I_IXON(tty)) {
+ 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;
+ dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
+ __FUNCTION__, config->cXon, config->cXoff);
+ } else {
+ dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
+ }
+
+ /* if we are implementing OUTBOUND XON/XOFF */
+ if (I_IXON(tty)) {
+ config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
+ dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
+ __FUNCTION__, config->cXon, config->cXoff);
+ } else {
+ dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
+ }
+ }
+
+ /* Round the baud rate */
+ baud = tty_get_baud_rate(tty);
+ if (!baud) {
+ /* pick a default, any default... */
+ baud = 9600;
+ }
+ edge_port->baud_rate = baud;
+ config->wBaudRate = (__u16)((461550L + baud/2) / baud);
+
+ dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
+
+ dbg ("wBaudRate: %d", (int)(461550L / config->wBaudRate));
+ dbg ("wFlags: 0x%x", config->wFlags);
+ dbg ("bDataBits: %d", config->bDataBits);
+ dbg ("bParity: %d", config->bParity);
+ dbg ("bStopBits: %d", config->bStopBits);
+ dbg ("cXon: %d", config->cXon);
+ dbg ("cXoff: %d", config->cXoff);
+ dbg ("bUartMode: %d", config->bUartMode);
+
+ /* move the word values into big endian mode */
+ cpu_to_be16s (&config->wFlags);
+ cpu_to_be16s (&config->wBaudRate);
+
+ status = TIWriteCommandSync (edge_port->port->serial->dev,
+ UMPC_SET_CONFIG,
+ (__u8)(UMPM_UART1_PORT + port_number),
+ 0,
+ (__u8 *)config,
+ sizeof(*config));
+ if (status) {
+ dbg ("%s - error %d when trying to write config to device",
+ __FUNCTION__, status);
+ }
+
+ kfree (config);
+
+ return;
+}
+
+static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct tty_struct *tty = port->tty;
+ unsigned int cflag;
+
+ if (!port->tty || !port->tty->termios) {
+ dbg ("%s - no tty or termios", __FUNCTION__);
+ return;
+ }
+
+ cflag = tty->termios->c_cflag;
+ /* check that they really want us to change something */
+ if (old_termios) {
+ if (cflag == old_termios->c_cflag &&
+ tty->termios->c_iflag == old_termios->c_iflag) {
+ dbg ("%s - nothing to change", __FUNCTION__);
+ return;
+ }
+ }
+
+ dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
+ tty->termios->c_cflag, tty->termios->c_iflag);
+ if (old_termios) {
+ dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
+ old_termios->c_cflag, old_termios->c_iflag);
+ }
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ if (edge_port == NULL)
+ return;
+
+ /* change the port settings to the new ones specified */
+ change_port_settings (edge_port, old_termios);
+
+ return;
+}
+
+static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned int mcr;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ 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;
+
+ TIRestoreMCR (edge_port, mcr);
+
+ return 0;
+}
+
+static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ unsigned int result = 0;
+ unsigned int msr;
+ unsigned int mcr;
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ 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 */
+
+
+ dbg("%s -- %x", __FUNCTION__, result);
+
+ return result;
+}
+
+static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
+{
+ struct serial_struct tmp;
+
+ if (!retinfo)
+ return -EFAULT;
+
+ memset(&tmp, 0, sizeof(tmp));
+
+ tmp.type = PORT_16550A;
+ tmp.line = edge_port->port->serial->minor;
+ tmp.port = edge_port->port->number;
+ tmp.irq = 0;
+ tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
+ tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
+ tmp.baud_base = 9600;
+ tmp.close_delay = 5*HZ;
+ tmp.closing_wait = closing_wait;
+// tmp.custom_divisor = state->custom_divisor;
+// tmp.hub6 = state->hub6;
+// tmp.io_type = state->io_type;
+
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+ return 0;
+}
+
+static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ struct async_icount cnow;
+ struct async_icount cprev;
+
+ dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
+
+ switch (cmd) {
+ case TIOCINQ:
+ dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number);
+// return get_number_bytes_avail(edge_port, (unsigned int *) arg);
+ break;
+
+ case TIOCSERGETLSR:
+ dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
+// return get_lsr_info(edge_port, (unsigned int *) arg);
+ break;
+
+ case TIOCGSERIAL:
+ dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
+ return get_serial_info(edge_port, (struct serial_struct __user *) arg);
+ break;
+
+ case TIOCSSERIAL:
+ dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
+ break;
+
+ case TIOCMIWAIT:
+ dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
+ cprev = edge_port->icount;
+ while (1) {
+ interruptible_sleep_on(&edge_port->delta_msr_wait);
+ /* see if a signal did it */
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ cnow = edge_port->icount;
+ if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
+ cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
+ return -EIO; /* no change => error */
+ if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
+ ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
+ ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
+ ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
+ return 0;
+ }
+ cprev = cnow;
+ }
+ /* not reached */
+ break;
+
+ case TIOCGICOUNT:
+ dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
+ port->number, edge_port->icount.rx, edge_port->icount.tx);
+ if (copy_to_user((void __user *)arg, &edge_port->icount, sizeof(edge_port->icount)))
+ return -EFAULT;
+ return 0;
+ }
+
+ return -ENOIOCTLCMD;
+}
+
+static void edge_break (struct usb_serial_port *port, int break_state)
+{
+ struct edgeport_port *edge_port = usb_get_serial_port_data(port);
+ int status;
+
+ dbg ("%s - state = %d", __FUNCTION__, break_state);
+
+ /* chase the port close */
+ TIChasePort (edge_port, 0, 0);
+
+ if (break_state == -1) {
+ status = TISetBreak (edge_port);
+ } else {
+ status = TIClearBreak (edge_port);
+ }
+ if (status) {
+ dbg ("%s - error %d sending break set/clear command.",
+ __FUNCTION__, status);
+ }
+}
+
+static int edge_startup (struct usb_serial *serial)
+{
+ struct edgeport_serial *edge_serial;
+ struct edgeport_port *edge_port;
+ struct usb_device *dev;
+ int status;
+ int i;
+
+ dev = serial->dev;
+
+ /* create our private serial structure */
+ edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
+ if (edge_serial == NULL) {
+ dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+ memset (edge_serial, 0, sizeof(struct edgeport_serial));
+ sema_init(&edge_serial->es_sem, 1);
+ edge_serial->serial = serial;
+ usb_set_serial_data(serial, edge_serial);
+
+ status = TIDownloadFirmware (edge_serial);
+ if (status) {
+ kfree (edge_serial);
+ return status;
+ }
+
+ /* set up our port private structures */
+ for (i = 0; i < serial->num_ports; ++i) {
+ edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
+ if (edge_port == NULL) {
+ dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
+ goto cleanup;
+ }
+ memset (edge_port, 0, sizeof(struct edgeport_port));
+ spin_lock_init(&edge_port->ep_lock);
+ edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
+ if (edge_port->ep_out_buf == NULL) {
+ dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
+ kfree(edge_port);
+ goto cleanup;
+ }
+ edge_port->port = serial->port[i];
+ edge_port->edge_serial = edge_serial;
+ usb_set_serial_port_data(serial->port[i], edge_port);
+ edge_port->bUartMode = 0; /* Default is RS232 */
+ }
+
+ return 0;
+
+cleanup:
+ for (--i; i>=0; --i) {
+ edge_port = usb_get_serial_port_data(serial->port[i]);
+ edge_buf_free(edge_port->ep_out_buf);
+ kfree(edge_port);
+ usb_set_serial_port_data(serial->port[i], NULL);
+ }
+ kfree (edge_serial);
+ usb_set_serial_data(serial, NULL);
+ return -ENOMEM;
+}
+
+static void edge_shutdown (struct usb_serial *serial)
+{
+ int i;
+ struct edgeport_port *edge_port;
+
+ dbg ("%s", __FUNCTION__);
+
+ for (i=0; i < serial->num_ports; ++i) {
+ edge_port = usb_get_serial_port_data(serial->port[i]);
+ if (edge_port) {
+ edge_buf_free(edge_port->ep_out_buf);
+ kfree(edge_port);
+ }
+ usb_set_serial_port_data(serial->port[i], NULL);
+ }
+ kfree (usb_get_serial_data(serial));
+ usb_set_serial_data(serial, NULL);
+}
+
+
+/* Circular Buffer */
+
+/*
+ * edge_buf_alloc
+ *
+ * Allocate a circular buffer and all associated memory.
+ */
+
+static struct edge_buf *edge_buf_alloc(unsigned int size)
+{
+ struct edge_buf *eb;
+
+
+ if (size == 0)
+ return NULL;
+
+ eb = (struct edge_buf *)kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
+ if (eb == NULL)
+ return NULL;
+
+ eb->buf_buf = kmalloc(size, GFP_KERNEL);
+ if (eb->buf_buf == NULL) {
+ kfree(eb);
+ return NULL;
+ }
+
+ eb->buf_size = size;
+ eb->buf_get = eb->buf_put = eb->buf_buf;
+
+ return eb;
+}
+
+
+/*
+ * edge_buf_free
+ *
+ * Free the buffer and all associated memory.
+ */
+
+void edge_buf_free(struct edge_buf *eb)
+{
+ if (eb != NULL) {
+ if (eb->buf_buf != NULL)
+ kfree(eb->buf_buf);
+ kfree(eb);
+ }
+}
+
+
+/*
+ * edge_buf_clear
+ *
+ * Clear out all data in the circular buffer.
+ */
+
+static void edge_buf_clear(struct edge_buf *eb)
+{
+ if (eb != NULL)
+ eb->buf_get = eb->buf_put;
+ /* equivalent to a get of all data available */
+}
+
+
+/*
+ * edge_buf_data_avail
+ *
+ * Return the number of bytes of data available in the circular
+ * buffer.
+ */
+
+static unsigned int edge_buf_data_avail(struct edge_buf *eb)
+{
+ if (eb != NULL)
+ return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
+ else
+ return 0;
+}
+
+
+/*
+ * edge_buf_space_avail
+ *
+ * Return the number of bytes of space available in the circular
+ * buffer.
+ */
+
+static unsigned int edge_buf_space_avail(struct edge_buf *eb)
+{
+ if (eb != NULL)
+ return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
+ else
+ return 0;
+}
+
+
+/*
+ * edge_buf_put
+ *
+ * Copy data data from a user buffer and put it into the circular buffer.
+ * Restrict to the amount of space available.
+ *
+ * Return the number of bytes copied.
+ */
+
+static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
+ unsigned int count)
+{
+ unsigned int len;
+
+
+ if (eb == NULL)
+ return 0;
+
+ len = edge_buf_space_avail(eb);
+ if (count > len)
+ count = len;
+
+ if (count == 0)
+ return 0;
+
+ len = eb->buf_buf + eb->buf_size - eb->buf_put;
+ if (count > len) {
+ memcpy(eb->buf_put, buf, len);
+ memcpy(eb->buf_buf, buf+len, count - len);
+ eb->buf_put = eb->buf_buf + count - len;
+ } else {
+ memcpy(eb->buf_put, buf, count);
+ if (count < len)
+ eb->buf_put += count;
+ else /* count == len */
+ eb->buf_put = eb->buf_buf;
+ }
+
+ return count;
+}
+
+
+/*
+ * edge_buf_get
+ *
+ * Get data from the circular buffer and copy to the given buffer.
+ * Restrict to the amount of data available.
+ *
+ * Return the number of bytes copied.
+ */
+
+static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
+ unsigned int count)
+{
+ unsigned int len;
+
+
+ if (eb == NULL)
+ return 0;
+
+ len = edge_buf_data_avail(eb);
+ if (count > len)
+ count = len;
+
+ if (count == 0)
+ return 0;
+
+ len = eb->buf_buf + eb->buf_size - eb->buf_get;
+ if (count > len) {
+ memcpy(buf, eb->buf_get, len);
+ memcpy(buf+len, eb->buf_buf, count - len);
+ eb->buf_get = eb->buf_buf + count - len;
+ } else {
+ memcpy(buf, eb->buf_get, count);
+ if (count < len)
+ eb->buf_get += count;
+ else /* count == len */
+ eb->buf_get = eb->buf_buf;
+ }
+
+ return count;
+}
+
+
+static struct usb_serial_device_type edgeport_1port_device = {
+ .owner = THIS_MODULE,
+ .name = "Edgeport TI 1 port adapter",
+ .short_name = "edgeport_ti_1",
+ .id_table = edgeport_1port_id_table,
+ .num_interrupt_in = 1,
+ .num_bulk_in = 1,
+ .num_bulk_out = 1,
+ .num_ports = 1,
+ .open = edge_open,
+ .close = edge_close,
+ .throttle = edge_throttle,
+ .unthrottle = edge_unthrottle,
+ .attach = edge_startup,
+ .shutdown = edge_shutdown,
+ .ioctl = edge_ioctl,
+ .set_termios = edge_set_termios,
+ .tiocmget = edge_tiocmget,
+ .tiocmset = edge_tiocmset,
+ .write = edge_write,
+ .write_room = edge_write_room,
+ .chars_in_buffer = edge_chars_in_buffer,
+ .break_ctl = edge_break,
+ .read_int_callback = edge_interrupt_callback,
+ .read_bulk_callback = edge_bulk_in_callback,
+ .write_bulk_callback = edge_bulk_out_callback,
+};
+
+static struct usb_serial_device_type edgeport_2port_device = {
+ .owner = THIS_MODULE,
+ .name = "Edgeport TI 2 port adapter",
+ .short_name = "edgeport_ti_2",
+ .id_table = edgeport_2port_id_table,
+ .num_interrupt_in = 1,
+ .num_bulk_in = 2,
+ .num_bulk_out = 2,
+ .num_ports = 2,
+ .open = edge_open,
+ .close = edge_close,
+ .throttle = edge_throttle,
+ .unthrottle = edge_unthrottle,
+ .attach = edge_startup,
+ .shutdown = edge_shutdown,
+ .ioctl = edge_ioctl,
+ .set_termios = edge_set_termios,
+ .tiocmget = edge_tiocmget,
+ .tiocmset = edge_tiocmset,
+ .write = edge_write,
+ .write_room = edge_write_room,
+ .chars_in_buffer = edge_chars_in_buffer,
+ .break_ctl = edge_break,
+ .read_int_callback = edge_interrupt_callback,
+ .read_bulk_callback = edge_bulk_in_callback,
+ .write_bulk_callback = edge_bulk_out_callback,
+};
+
+
+static int __init edgeport_init(void)
+{
+ int retval;
+ retval = usb_serial_register(&edgeport_1port_device);
+ if (retval)
+ goto failed_1port_device_register;
+ retval = usb_serial_register(&edgeport_2port_device);
+ if (retval)
+ goto failed_2port_device_register;
+ retval = usb_register(&io_driver);
+ if (retval)
+ goto failed_usb_register;
+ info(DRIVER_DESC " " DRIVER_VERSION);
+ return 0;
+failed_usb_register:
+ usb_serial_deregister(&edgeport_2port_device);
+failed_2port_device_register:
+ usb_serial_deregister(&edgeport_1port_device);
+failed_1port_device_register:
+ return retval;
+}
+
+static void __exit edgeport_exit (void)
+{
+ usb_deregister (&io_driver);
+ usb_serial_deregister (&edgeport_1port_device);
+ usb_serial_deregister (&edgeport_2port_device);
+}
+
+module_init(edgeport_init);
+module_exit(edgeport_exit);
+
+/* Module information */
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
+module_param(low_latency, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
+
+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");
+
generated by cgit v0.10.2 at 2024-11-10 21:18:36 (GMT)