/* * Edgeport USB Serial Converter driver * * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. * Copyright (C) 2001-2002 Greg Kroah-Hartman * * 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 , * or Al Borchers . * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "io_16654.h" #include "io_usbvend.h" #include "io_ti.h" /* * Version Information */ #define DRIVER_VERSION "v0.7mode043006" #define DRIVER_AUTHOR "Greg Kroah-Hartman and David Iacovelli" #define DRIVER_DESC "Edgeport USB Serial Driver" #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_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 milliseconds 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 mutex es_lock; 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, 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 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 struct usb_driver io_driver = { .name = "io_ti", .probe = usb_serial_probe, .disconnect = usb_serial_disconnect, .id_table = id_table_combined, .no_dynamic_id = 1, }; static unsigned char OperationalMajorVersion; static unsigned char OperationalMinorVersion; static unsigned short OperationalBuildNumber; static int debug; static int closing_wait = EDGE_CLOSING_WAIT; static int ignore_cpu_rev; static int default_uart_mode; /* RS232 */ 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 tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); static void edge_send(struct tty_struct *tty); /* sysfs attributes */ static int edge_create_sysfs_attrs(struct usb_serial_port *port); static int edge_remove_sysfs_attrs(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 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) { dbg("%s - wanted to write %d, but only wrote %d", __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 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", __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); } /* clear tx/rx buffers and fifo in TI UMP */ static int purge_port(struct usb_serial_port *port, __u16 mask) { int port_number = port->number - port->serial->minor; dbg("%s - port %d, mask %x", __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; __be16 be_start_address; dbg("%s - @ %x for %d", __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) { dbg("%s - @ %x for %d", __func__, start_address, read_length); } be_start_address = cpu_to_be16(start_address); status = ti_vread_sync(dev, UMPC_MEMORY_READ, (__u16)address_type, (__force __u16)be_start_address, buffer, read_length); if (status) { dbg("%s - ERROR %x", __func__, status); return status; } if (read_length > 1) usb_serial_debug_data(debug, &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) { dbg("%s - ERROR %x", __func__, status); return status; } } dbg("%s - start_address = %x, length = %d", __func__, start_address, length); usb_serial_debug_data(debug, &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) { dev_err(&serial->serial->dev->dev, "%s - out of memory\n", __func__); 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); if (status) return status; } dbg("%s - start_sddr = %x, length = %d", __func__, start_address, length); usb_serial_debug_data(debug, &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) { 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", __func__, start_address, write_length); usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, write_length, buffer); /* Write first page */ be_start_address = cpu_to_be16(start_address); status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, (__u16)address_type, (__force __u16)be_start_address, buffer, write_length); if (status) { dbg("%s - ERROR %d", __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; dbg("%s - Page Write Addr = %x, length = %d", __func__, start_address, write_length); usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, write_length, buffer); /* Write next page */ be_start_address = cpu_to_be16(start_address); status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, (__u16)address_type, (__force __u16)be_start_address, buffer, write_length); if (status) { dev_err(&serial->serial->dev->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) { dev_err(&port->port->dev, "%s - out of memory\n", __func__); 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 = read_ram(port->port->serial->dev, port->dma_address, sizeof(*oedb), (void *)oedb); if (status) goto exit_is_tx_active; dbg("%s - XByteCount 0x%X", __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; dbg("%s - LSR = 0x%X", __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: dbg("%s - return %d", __func__, bytes_left); kfree(lsr); kfree(oedb); return bytes_left; } static void chase_port(struct edgeport_port *port, unsigned long timeout, int flush) { int baud_rate; struct tty_struct *tty = tty_port_tty_get(&port->port->port); 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); tty_kref_put(tty); /* 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 (!tx_active(port)) break; msleep(10); } /* disconnected */ if (!usb_get_intfdata(port->port->serial->interface)) return; /* wait one more character time, based on baud rate */ /* (tx_active doesn't seem to wait for the last byte) */ baud_rate = port->baud_rate; if (baud_rate == 0) baud_rate = 50; msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); } 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. */ dbg("%s - Number of Interfaces = %d", __func__, dev->config->desc.bNumInterfaces); dbg("%s - MAX Power = %d", __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) + 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 < rom_desc->Size; i++) cs = (__u8)(cs + buffer[i]); if (cs != rom_desc->CheckSum) { dbg("%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) { dev_err(dev, "%s - out of memory\n", __func__); return -ENOMEM; } buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); if (!buffer) { dev_err(dev, "%s - out of memory when allocating buffer\n", __func__); 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) + rom_desc->Size) > TI_MAX_I2C_SIZE) { status = -ENODEV; dbg("%s - structure too big, erroring out.", __func__); break; } dbg("%s Type = 0x%x", __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), 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) + 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; rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); if (!rom_desc) { dev_err(&serial->serial->dev->dev, "%s - out of memory\n", __func__); return -ENOMEM; } start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, rom_desc); if (!start_address) { dbg("%s - Edge Descriptor not found in I2C", __func__); status = -ENODEV; goto exit; } /* Read the descriptor data */ status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), rom_desc->Size, buffer); if (status) goto exit; status = valid_csum(rom_desc, buffer); desc = (struct edge_ti_manuf_descriptor *)buffer; dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); dbg("%s - Version %d", __func__, desc->Version); dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); dbg("%s - NumPorts %d", __func__, desc->NumPorts); dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); exit: kfree(rom_desc); return status; } /* Build firmware header used for firmware update */ static int build_i2c_fw_hdr(__u8 *header, struct device *dev) { __u8 *buffer; int buffer_size; int i; int err; __u8 cs = 0; struct ti_i2c_desc *i2c_header; struct ti_i2c_image_header *img_header; struct ti_i2c_firmware_rec *firmware_rec; const struct firmware *fw; const char *fw_name = "edgeport/down3.bin"; /* 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", __func__); return -ENOMEM; } // Set entire image of 0xffs memset(buffer, 0xff, buffer_size); err = request_firmware(&fw, fw_name, dev); if (err) { printk(KERN_ERR "Failed to load image \"%s\" err %d\n", fw_name, err); kfree(buffer); return err; } /* Save Download Version Number */ OperationalMajorVersion = fw->data[0]; OperationalMinorVersion = fw->data[1]; OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); /* Copy version number into firmware record */ firmware_rec = (struct ti_i2c_firmware_rec *)buffer; firmware_rec->Ver_Major = OperationalMajorVersion; firmware_rec->Ver_Minor = OperationalMinorVersion; /* 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)); release_firmware(fw); 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 = OperationalMajorVersion; firmware_rec->Ver_Minor = OperationalMinorVersion; return 0; } /* Try to figure out what type of I2c we have */ static int i2c_type_bootmode(struct edgeport_serial *serial) { int status; u8 *data; data = kmalloc(1, GFP_KERNEL); if (!data) { dev_err(&serial->serial->dev->dev, "%s - out of memory\n", __func__); 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) dbg("%s - read 2 status error = %d", __func__, status); else dbg("%s - read 2 data = 0x%x", __func__, *data); if ((!status) && (*data == UMP5152 || *data == UMP3410)) { dbg("%s - ROM_TYPE_II", __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) dbg("%s - read 3 status error = %d", __func__, status); else dbg("%s - read 2 data = 0x%x", __func__, *data); if ((!status) && (*data == UMP5152 || *data == UMP3410)) { dbg("%s - ROM_TYPE_III", __func__); serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; goto out; } dbg("%s - Unknown", __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); } /** * 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->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 = choose_config(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", __func__); 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; /********************************************************************/ /* Download Mode */ /********************************************************************/ if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { struct ti_i2c_desc *rom_desc; dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); status = check_i2c_image(serial); if (status) { dbg("%s - DOWNLOAD MODE -- BAD I2C", __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) { dev_err(dev, "%s - out of memory.\n", __func__); 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) { dbg("%s - Wrong CPU Rev %d (Must be 2)", __func__, ti_cpu_rev(ti_manuf_desc)); 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", __func__); 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; dbg("%s - Found Type FIRMWARE (Type 2) record", __func__); firmware_version = kmalloc(sizeof(*firmware_version), GFP_KERNEL); if (!firmware_version) { dev_err(dev, "%s - out of memory.\n", __func__); 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 = (OperationalMajorVersion << 8) + (OperationalMinorVersion); dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", __func__, firmware_version->Ver_Major, firmware_version->Ver_Minor, OperationalMajorVersion, OperationalMinorVersion); /* 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 dld from %d.%d to %d.%d", __func__, firmware_version->Ver_Major, firmware_version->Ver_Minor, OperationalMajorVersion, OperationalMinorVersion); record = kmalloc(1, GFP_KERNEL); if (!record) { dev_err(dev, "%s - out of memory.\n", __func__); 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; } dbg("%s - HARDWARE RESET", __func__); /* Reset UMP -- Back to BOOT MODE */ status = ti_vsend_sync(serial->serial->dev, UMPC_HARDWARE_RESET, 0, 0, NULL, 0); dbg("%s - HARDWARE RESET return %d", __func__, status); /* return an error on purpose. */ kfree(record); 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 = get_descriptor_addr(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", __func__); 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", __func__); kfree(header); kfree(rom_desc); kfree(ti_manuf_desc); return -ENOMEM; } dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", __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, 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 = write_rom(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 = read_rom(serial, start_address, HEADER_SIZE, vheader); if (status) { dbg("%s - can't read header back", __func__); 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", __func__); kfree(vheader); kfree(header); kfree(rom_desc); kfree(ti_manuf_desc); return status; } kfree(vheader); kfree(header); dbg("%s - Start firmware update", __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); dbg("%s - Update complete 0x%x", __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; } /********************************************************************/ /* Boot Mode */ /********************************************************************/ dbg("%s - RUNNING IN BOOT MODE", __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) { dbg("%s - VID = 0x%x", __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; int err; const struct firmware *fw; const char *fw_name = "edgeport/down3.bin"; /* 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", __func__); 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) { dbg("%s - Wrong CPU Rev %d (Must be 2)", __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) { dev_err(dev, "%s - out of memory\n", __func__); return -ENOMEM; } /* Initialize the buffer to 0xff (pad the buffer) */ memset(buffer, 0xff, buffer_size); err = request_firmware(&fw, fw_name, dev); if (err) { printk(KERN_ERR "Failed to load image \"%s\" err %d\n", fw_name, err); kfree(buffer); return err; } memcpy(buffer, &fw->data[4], fw->size - 4); release_firmware(fw); 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)", __func__); status = download_code(serial, buffer, buffer_size); kfree(buffer); if (status) { dbg("%s - Error downloading operational code image", __func__); return status; } /* Device will reboot */ serial->product_info.TiMode = TI_MODE_TRANSITIONING; dbg("%s - Download successful -- Device rebooting...", __func__); /* return an error on purpose */ return -ENODEV; } stayinbootmode: /* Eprom is invalid or blank stay in boot mode */ dbg("%s - STAYING IN BOOT MODE", __func__); serial->product_info.TiMode = TI_MODE_BOOT; return 0; } static int ti_do_config(struct edgeport_port *port, int feature, int on) { int port_number = port->port->number - port->port->serial->minor; 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; dbg("%s - %x", __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; dbg("%s - %02x", __func__, 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 = tty_port_tty_get(&edge_port->port->port); /* 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; } } tty_kref_put(tty); 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)); struct tty_struct *tty; dbg("%s - %02x", __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) { tty = tty_port_tty_get(&edge_port->port->port); if (tty) { edge_tty_recv(&edge_port->port->dev, tty, &data, 1); tty_kref_put(tty); } } /* 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 edgeport_serial *edge_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 retval; __u8 lsr; __u8 msr; int status = urb->status; dbg("%s", __func__); switch (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", __func__, status); return; default: dev_err(&urb->dev->dev, "%s - nonzero urb status received: " "%d\n", __func__, status); goto exit; } if (!length) { dbg("%s - no data in urb", __func__); goto exit; } usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __func__, length, data); if (length != 2) { dbg("%s - expecting packet of size 2, got %d", __func__, 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", __func__, 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", __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 */ dbg("%s - LSR Event Port %u LSR Status = %02x", __func__, port_number, lsr); edge_port->lsr_event = 1; edge_port->lsr_mask = lsr; } else { dbg("%s - ===== Port %d LSR Status = %02x ======", __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]; dbg("%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; unsigned char *data = urb->transfer_buffer; struct tty_struct *tty; int retval = 0; int port_number; int status = urb->status; dbg("%s", __func__); switch (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", __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->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 ======", __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; } tty = tty_port_tty_get(&edge_port->port->port); if (tty && urb->actual_length) { usb_serial_debug_data(debug, &edge_port->port->dev, __func__, urb->actual_length, data); if (edge_port->close_pending) dbg("%s - close pending, dropping data on the floor", __func__); else edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length); edge_port->icount.rx += urb->actual_length; } tty_kref_put(tty); 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; 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(&edge_port->ep_lock); if (retval) dev_err(&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); } static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length) { int queued; tty_buffer_request_room(tty, length); queued = tty_insert_flip_string(tty, data, length); if (queued < length) dev_err(dev, "%s - dropping data, %d bytes lost\n", __func__, length - queued); tty_flip_buffer_push(tty); } 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; dbg("%s - port %d", __func__, port->number); 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 */ dbg("%s - urb shutting down with status: %d", __func__, status); return; default: dev_err(&urb->dev->dev, "%s - nonzero write bulk status " "received: %d\n", __func__, status); } /* send any buffered data */ tty = tty_port_tty_get(&port->port); edge_send(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; dbg("%s - port %d", __func__, port->number); if (edge_port == NULL) return -ENODEV; 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", __func__, 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 = 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)); dbg("%s - Sending UMPC_OPEN_PORT", __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; } 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 (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; if (!urb) { dev_err(&port->dev, "%s - no interrupt urb present, exiting\n", __func__); status = -EINVAL; goto release_es_lock; } 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", __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; if (!urb) { dev_err(&port->dev, "%s - no read urb present, exiting\n", __func__); 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", __func__, status); goto unlink_int_urb; } ++edge_serial->num_ports_open; dbg("%s - exited", __func__); 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; int port_number; int status; dbg("%s - port %d", __func__, 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 */ chase_port(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", __func__); port_number = port->number - port->serial->minor; status = send_cmd(port->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; dbg("%s - exited", __func__); } 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); unsigned long flags; dbg("%s - port %d", __func__, port->number); if (count == 0) { dbg("%s - write request of 0 bytes", __func__); 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(tty); return count; } static void edge_send(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; int count, result; struct edgeport_port *edge_port = usb_get_serial_port_data(port); unsigned long flags; dbg("%s - port %d", __func__, 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, __func__, 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", __func__, 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) 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; dbg("%s - port %d", __func__, port->number); if (edge_port == NULL) return 0; if (edge_port->close_pending == 1) return 0; 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", __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; dbg("%s - port %d", __func__, port->number); if (edge_port == NULL) return 0; if (edge_port->close_pending == 1) return 0; 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", __func__, chars); return chars; } 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; dbg("%s - port %d", __func__, port->number); 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; dbg("%s - port %d", __func__, port->number); 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; urb->complete = edge_bulk_in_callback; urb->context = edge_port; urb->dev = edge_port->port->serial->dev; 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 ump_uart_config *config; int baud; unsigned cflag; int status; int port_number = edge_port->port->number - edge_port->port->serial->minor; dbg("%s - port %d", __func__, edge_port->port->number); config = kmalloc (sizeof (*config), GFP_KERNEL); if (!config) { *tty->termios = *old_termios; dev_err(&edge_port->port->dev, "%s - out of memory\n", __func__); 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", __func__); break; case CS6: config->bDataBits = UMP_UART_CHAR6BITS; dbg("%s - data bits = 6", __func__); break; case CS7: config->bDataBits = UMP_UART_CHAR7BITS; dbg("%s - data bits = 7", __func__); break; default: case CS8: config->bDataBits = UMP_UART_CHAR8BITS; dbg("%s - data bits = 8", __func__); break; } if (cflag & PARENB) { if (cflag & PARODD) { config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; config->bParity = UMP_UART_ODDPARITY; dbg("%s - parity = odd", __func__); } else { config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; config->bParity = UMP_UART_EVENPARITY; dbg("%s - parity = even", __func__); } } else { config->bParity = UMP_UART_NOPARITY; dbg("%s - parity = none", __func__); } if (cflag & CSTOPB) { config->bStopBits = UMP_UART_STOPBIT2; dbg("%s - stop bits = 2", __func__); } else { config->bStopBits = UMP_UART_STOPBIT1; dbg("%s - stop bits = 1", __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; dbg("%s - RTS/CTS is enabled", __func__); } else { dbg("%s - RTS/CTS is disabled", __func__); tty->hw_stopped = 0; 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; dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __func__, config->cXon, config->cXoff); } else dbg("%s - INBOUND XON/XOFF is disabled", __func__); /* 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", __func__, config->cXon, config->cXoff); } else dbg("%s - OUTBOUND XON/XOFF is disabled", __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 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 */ dbg("%s - baud rate = %d, wBaudRate = %d", __func__, 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 = send_cmd(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", __func__, status); kfree(config); return; } 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); unsigned int cflag; cflag = tty->termios->c_cflag; dbg("%s - clfag %08x iflag %08x", __func__, tty->termios->c_cflag, tty->termios->c_iflag); dbg("%s - old clfag %08x old iflag %08x", __func__, old_termios->c_cflag, old_termios->c_iflag); dbg("%s - port %d", __func__, port->number); if (edge_port == NULL) return; /* change the port settings to the new ones specified */ change_port_settings(tty, edge_port, old_termios); return; } static int edge_tiocmset(struct tty_struct *tty, struct file *file, 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; dbg("%s - port %d", __func__, port->number); 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 file *file) { 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; dbg("%s - port %d", __func__, port->number); 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 */ dbg("%s -- %x", __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; 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; if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) return -EFAULT; return 0; } static int edge_ioctl(struct tty_struct *tty, struct file *file, 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); struct async_icount cnow; struct async_icount cprev; dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); switch (cmd) { case TIOCGSERIAL: dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); return get_serial_info(edge_port, (struct serial_struct __user *) arg); case TIOCMIWAIT: dbg("%s - (%d) TIOCMIWAIT", __func__, 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", __func__, 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 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 */ dbg("%s - state = %d", __func__, break_state); /* chase the port close */ chase_port(edge_port, 0, 0); if (break_state == -1) bv = 1; /* On */ status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); if (status) dbg("%s - error %d sending break set/clear command.", __func__, 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 = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); if (edge_serial == NULL) { dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); return -ENOMEM; } mutex_init(&edge_serial->es_lock); edge_serial->serial = serial; usb_set_serial_data(serial, edge_serial); status = download_fw(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 = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); if (edge_port == NULL) { dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); goto cleanup; } 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", __func__); 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 = default_uart_mode; } 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_disconnect(struct usb_serial *serial) { int i; struct edgeport_port *edge_port; dbg("%s", __func__); for (i = 0; i < serial->num_ports; ++i) { edge_port = usb_get_serial_port_data(serial->port[i]); edge_remove_sysfs_attrs(edge_port->port); } } static void edge_release(struct usb_serial *serial) { int i; struct edgeport_port *edge_port; dbg("%s", __func__); for (i = 0; i < serial->num_ports; ++i) { edge_port = usb_get_serial_port_data(serial->port[i]); edge_buf_free(edge_port->ep_out_buf); kfree(edge_port); } kfree(usb_get_serial_data(serial)); } /* Sysfs Attributes */ static ssize_t show_uart_mode(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 store_uart_mode(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); dbg("%s: setting uart_mode = %d", __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(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, store_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; } /* 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 = 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. */ static void edge_buf_free(struct edge_buf *eb) { if (eb) { 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 0; return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); } /* * 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 0; return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); } /* * 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_driver edgeport_1port_device = { .driver = { .owner = THIS_MODULE, .name = "edgeport_ti_1", }, .description = "Edgeport TI 1 port adapter", .usb_driver = &io_driver, .id_table = edgeport_1port_id_table, .num_ports = 1, .open = edge_open, .close = edge_close, .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, .disconnect = edge_disconnect, .release = edge_release, .port_probe = edge_create_sysfs_attrs, .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_driver edgeport_2port_device = { .driver = { .owner = THIS_MODULE, .name = "edgeport_ti_2", }, .description = "Edgeport TI 2 port adapter", .usb_driver = &io_driver, .id_table = edgeport_2port_id_table, .num_ports = 2, .open = edge_open, .close = edge_close, .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, .disconnect = edge_disconnect, .release = edge_release, .port_probe = edge_create_sysfs_attrs, .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; printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" DRIVER_DESC "\n"); 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_FIRMWARE("edgeport/down3.bin"); module_param(debug, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug, "Debug 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"); module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");