| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds | 7638 | 55.82% | 14 | 13.08% |
| Greg Kroah-Hartman | 2579 | 18.85% | 34 | 31.78% |
| Johan Hovold | 1781 | 13.02% | 13 | 12.15% |
| Al Borchers | 420 | 3.07% | 3 | 2.80% |
| Jaswinder Singh Rajput | 376 | 2.75% | 1 | 0.93% |
| Alan Cox | 352 | 2.57% | 9 | 8.41% |
| Harvey Harrison | 98 | 0.72% | 1 | 0.93% |
| Nishanth Aravamudan | 70 | 0.51% | 2 | 1.87% |
| Al Viro | 58 | 0.42% | 3 | 2.80% |
| Pete Zaitcev | 51 | 0.37% | 2 | 1.87% |
| Richard Knutsson | 49 | 0.36% | 1 | 0.93% |
| André Breiler | 44 | 0.32% | 1 | 0.93% |
| Jiri Slaby | 32 | 0.23% | 3 | 2.80% |
| John Ogness | 26 | 0.19% | 1 | 0.93% |
| Oliver Neukum | 21 | 0.15% | 1 | 0.93% |
| Thomas Chen | 18 | 0.13% | 1 | 0.93% |
| Alan Stern | 17 | 0.12% | 2 | 1.87% |
| Dan Carpenter | 12 | 0.09% | 1 | 0.93% |
| Olaf Hering | 12 | 0.09% | 1 | 0.93% |
| Ganesh Varadarajan | 8 | 0.06% | 1 | 0.93% |
| Peter Hurley | 6 | 0.04% | 1 | 0.93% |
| Kuninori Morimoto | 2 | 0.01% | 1 | 0.93% |
| Joe Perches | 2 | 0.01% | 1 | 0.93% |
| Chris Lund | 2 | 0.01% | 1 | 0.93% |
| Josh Myer | 2 | 0.01% | 1 | 0.93% |
| Björn Mork | 2 | 0.01% | 1 | 0.93% |
| Tobias Klauser | 1 | 0.01% | 1 | 0.93% |
| Eric Sesterhenn / Snakebyte | 1 | 0.01% | 1 | 0.93% |
| Anand Gadiyar | 1 | 0.01% | 1 | 0.93% |
| Steven Cole | 1 | 0.01% | 1 | 0.93% |
| Jesper Juhl | 1 | 0.01% | 1 | 0.93% |
| Arjan van de Ven | 1 | 0.01% | 1 | 0.93% |
| Total | 13684 | 107 |
// SPDX-License-Identifier: GPL-2.0+ /* * Edgeport USB Serial Converter driver * * Copyright (C) 2000 Inside Out Networks, All rights reserved. * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> * * Supports the following devices: * Edgeport/4 * Edgeport/4t * Edgeport/2 * Edgeport/4i * Edgeport/2i * Edgeport/421 * Edgeport/21 * Rapidport/4 * Edgeport/8 * Edgeport/2D8 * Edgeport/4D8 * Edgeport/8i * * For questions or problems with this driver, contact Inside Out * Networks technical support, or Peter Berger <pberger@brimson.com>, * or Al Borchers <alborchers@steinerpoint.com>. * */ #include <linux/kernel.h> #include <linux/jiffies.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/tty.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/spinlock.h> #include <linux/serial.h> #include <linux/ioctl.h> #include <linux/wait.h> #include <linux/firmware.h> #include <linux/ihex.h> #include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> #include "io_edgeport.h" #include "io_ionsp.h" /* info for the iosp messages */ #include "io_16654.h" /* 16654 UART defines */ #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" #define DRIVER_DESC "Edgeport USB Serial Driver" #define MAX_NAME_LEN 64 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ static const struct usb_device_id edgeport_2port_id_table[] = { { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, { } }; static const struct usb_device_id edgeport_4port_id_table[] = { { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, { } }; static const struct usb_device_id edgeport_8port_id_table[] = { { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, { } }; static const struct usb_device_id Epic_port_id_table[] = { { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, { } }; /* Devices that this driver supports */ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, id_table_combined); /* receive port state */ enum RXSTATE { EXPECT_HDR1 = 0, /* Expect header byte 1 */ EXPECT_HDR2 = 1, /* Expect header byte 2 */ EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ }; /* Transmit Fifo * This Transmit queue is an extension of the edgeport Rx buffer. * The maximum amount of data buffered in both the edgeport * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. */ struct TxFifo { unsigned int head; /* index to head pointer (write) */ unsigned int tail; /* index to tail pointer (read) */ unsigned int count; /* Bytes in queue */ unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ unsigned char *fifo; /* allocated Buffer */ }; /* This structure holds all of the local port information */ struct edgeport_port { __u16 txCredits; /* our current credits for this port */ __u16 maxTxCredits; /* the max size of the port */ struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ struct urb *write_urb; /* write URB for this port */ bool write_in_progress; /* 'true' while a write URB is outstanding */ spinlock_t ep_lock; __u8 shadowLCR; /* last LCR value received */ __u8 shadowMCR; /* last MCR value received */ __u8 shadowMSR; /* last MSR value received */ __u8 shadowLSR; /* last LSR value received */ __u8 shadowXonChar; /* last value set as XON char in Edgeport */ __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ __u8 validDataMask; __u32 baudRate; bool open; bool openPending; bool commandPending; bool closePending; bool chaseResponsePending; wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ struct usb_serial_port *port; /* loop back to the owner of this object */ }; /* This structure holds all of the individual device information */ struct edgeport_serial { char name[MAX_NAME_LEN+2]; /* string name of this device */ struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ struct edgeport_product_info product_info; /* Product Info */ struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ int is_epic; /* flag if EPiC device or not */ __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ struct urb *interrupt_read_urb; /* our interrupt urb */ __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ struct urb *read_urb; /* our bulk read urb */ bool read_in_progress; spinlock_t es_lock; __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ enum RXSTATE rxState; /* the current state of the bulk receive processor */ __u8 rxHeader1; /* receive header byte 1 */ __u8 rxHeader2; /* receive header byte 2 */ __u8 rxHeader3; /* receive header byte 3 */ __u8 rxPort; /* the port that we are currently receiving data for */ __u8 rxStatusCode; /* the receive status code */ __u8 rxStatusParam; /* the receive status paramater */ __s16 rxBytesRemaining; /* the number of port bytes left to read */ struct usb_serial *serial; /* loop back to the owner of this object */ }; /* baud rate information */ struct divisor_table_entry { __u32 BaudRate; __u16 Divisor; }; /* * Define table of divisors for Rev A EdgePort/4 hardware * These assume a 3.6864MHz crystal, the standard /16, and * MCR.7 = 0. */ static const struct divisor_table_entry divisor_table[] = { { 50, 4608}, { 75, 3072}, { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ { 150, 1536}, { 300, 768}, { 600, 384}, { 1200, 192}, { 1800, 128}, { 2400, 96}, { 4800, 48}, { 7200, 32}, { 9600, 24}, { 14400, 16}, { 19200, 12}, { 38400, 6}, { 57600, 4}, { 115200, 2}, { 230400, 1}, }; /* Number of outstanding Command Write Urbs */ static atomic_t CmdUrbs = ATOMIC_INIT(0); /* local function prototypes */ /* function prototypes for all URB callbacks */ static void edge_interrupt_callback(struct urb *urb); static void edge_bulk_in_callback(struct urb *urb); static void edge_bulk_out_data_callback(struct urb *urb); static void edge_bulk_out_cmd_callback(struct urb *urb); /* function prototypes for the usbserial callbacks */ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); static void edge_close(struct usb_serial_port *port); static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static int edge_write_room(struct tty_struct *tty); static int edge_chars_in_buffer(struct tty_struct *tty); static void edge_throttle(struct tty_struct *tty); static void edge_unthrottle(struct tty_struct *tty); static void edge_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios); static int edge_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); static void edge_break(struct tty_struct *tty, int break_state); static int edge_tiocmget(struct tty_struct *tty); static int edge_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int edge_startup(struct usb_serial *serial); static void edge_disconnect(struct usb_serial *serial); static void edge_release(struct usb_serial *serial); static int edge_port_probe(struct usb_serial_port *port); static int edge_port_remove(struct usb_serial_port *port); /* function prototypes for all of our local functions */ static void process_rcvd_data(struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength); static void process_rcvd_status(struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3); static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, int length); static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data); static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, __u8 param); static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, int baudRate); static void change_port_settings(struct tty_struct *tty, struct edgeport_port *edge_port, struct ktermios *old_termios); static int send_cmd_write_uart_register(struct edgeport_port *edge_port, __u8 regNum, __u8 regValue); static int write_cmd_usb(struct edgeport_port *edge_port, unsigned char *buffer, int writeLength); static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port); static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, const __u8 *data); static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, const __u8 *data); static void get_manufacturing_desc(struct edgeport_serial *edge_serial); static void get_boot_desc(struct edgeport_serial *edge_serial); static void load_application_firmware(struct edgeport_serial *edge_serial); static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size); /* ************************************************************************ */ /* ************************************************************************ */ /* ************************************************************************ */ /* ************************************************************************ */ /************************************************************************ * * * update_edgeport_E2PROM() Compare current versions of * * Boot ROM and Manufacture * * Descriptors with versions * * embedded in this driver * * * ************************************************************************/ static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) { struct device *dev = &edge_serial->serial->dev->dev; __u32 BootCurVer; __u32 BootNewVer; __u8 BootMajorVersion; __u8 BootMinorVersion; __u16 BootBuildNumber; __u32 Bootaddr; const struct ihex_binrec *rec; const struct firmware *fw; const char *fw_name; int response; switch (edge_serial->product_info.iDownloadFile) { case EDGE_DOWNLOAD_FILE_I930: fw_name = "edgeport/boot.fw"; break; case EDGE_DOWNLOAD_FILE_80251: fw_name = "edgeport/boot2.fw"; break; default: return; } response = request_ihex_firmware(&fw, fw_name, &edge_serial->serial->dev->dev); if (response) { dev_err(dev, "Failed to load image \"%s\" err %d\n", fw_name, response); return; } rec = (const struct ihex_binrec *)fw->data; BootMajorVersion = rec->data[0]; BootMinorVersion = rec->data[1]; BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; /* Check Boot Image Version */ BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + (edge_serial->boot_descriptor.MinorVersion << 16) + le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); BootNewVer = (BootMajorVersion << 24) + (BootMinorVersion << 16) + BootBuildNumber; dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", edge_serial->boot_descriptor.MajorVersion, edge_serial->boot_descriptor.MinorVersion, le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); if (BootNewVer > BootCurVer) { dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", edge_serial->boot_descriptor.MajorVersion, edge_serial->boot_descriptor.MinorVersion, le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), BootMajorVersion, BootMinorVersion, BootBuildNumber); dev_dbg(dev, "Downloading new Boot Image\n"); for (rec = ihex_next_binrec(rec); rec; rec = ihex_next_binrec(rec)) { Bootaddr = be32_to_cpu(rec->addr); response = rom_write(edge_serial->serial, Bootaddr >> 16, Bootaddr & 0xFFFF, be16_to_cpu(rec->len), &rec->data[0]); if (response < 0) { dev_err(&edge_serial->serial->dev->dev, "rom_write failed (%x, %x, %d)\n", Bootaddr >> 16, Bootaddr & 0xFFFF, be16_to_cpu(rec->len)); break; } } } else { dev_dbg(dev, "Boot Image -- already up to date\n"); } release_firmware(fw); } #if 0 /************************************************************************ * * Get string descriptor from device * ************************************************************************/ static int get_string_desc(struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc) { struct usb_string_descriptor StringDesc; struct usb_string_descriptor *pStringDesc; dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) return 0; pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); if (!pStringDesc) return -1; if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength)) { kfree(pStringDesc); return -1; } *pRetDesc = pStringDesc; return 0; } #endif static void dump_product_info(struct edgeport_serial *edge_serial, struct edgeport_product_info *product_info) { struct device *dev = &edge_serial->serial->dev->dev; /* Dump Product Info structure */ dev_dbg(dev, "**Product Information:\n"); dev_dbg(dev, " ProductId %x\n", product_info->ProductId); dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); dev_dbg(dev, " IsServer %d\n", product_info->IsServer); dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); dev_dbg(dev, " RomSize %d\n", product_info->RomSize); dev_dbg(dev, " RamSize %d\n", product_info->RamSize); dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", product_info->BootMajorVersion, product_info->BootMinorVersion, le16_to_cpu(product_info->BootBuildNumber)); dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", product_info->FirmwareMajorVersion, product_info->FirmwareMinorVersion, le16_to_cpu(product_info->FirmwareBuildNumber)); dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", product_info->ManufactureDescDate[0], product_info->ManufactureDescDate[1], product_info->ManufactureDescDate[2]+1900); dev_dbg(dev, " iDownloadFile 0x%x\n", product_info->iDownloadFile); dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); } static void get_product_info(struct edgeport_serial *edge_serial) { struct edgeport_product_info *product_info = &edge_serial->product_info; memset(product_info, 0, sizeof(struct edgeport_product_info)); product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; product_info->ProdInfoVer = 0; product_info->RomSize = edge_serial->manuf_descriptor.RomSize; product_info->RamSize = edge_serial->manuf_descriptor.RamSize; product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion; product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion; product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber; memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate)); /* check if this is 2nd generation hardware */ if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ION_DEVICE_ID_80251_NETCHIP) product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; else product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; /* Determine Product type and set appropriate flags */ switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: case ION_DEVICE_ID_EDGEPORT_4T: case ION_DEVICE_ID_EDGEPORT_4: case ION_DEVICE_ID_EDGEPORT_2: case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: case ION_DEVICE_ID_EDGEPORT_8: case ION_DEVICE_ID_EDGEPORT_421: case ION_DEVICE_ID_EDGEPORT_21: case ION_DEVICE_ID_EDGEPORT_2_DIN: case ION_DEVICE_ID_EDGEPORT_4_DIN: case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: product_info->IsRS232 = 1; break; case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ product_info->IsRS422 = 1; product_info->IsRS485 = 1; break; case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ product_info->IsRS422 = 1; break; } dump_product_info(edge_serial, product_info); } static int get_epic_descriptor(struct edgeport_serial *ep) { int result; struct usb_serial *serial = ep->serial; struct edgeport_product_info *product_info = &ep->product_info; struct edge_compatibility_descriptor *epic; struct edge_compatibility_bits *bits; struct device *dev = &serial->dev->dev; ep->is_epic = 0; epic = kmalloc(sizeof(*epic), GFP_KERNEL); if (!epic) return -ENOMEM; result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_GET_EPIC_DESC, 0xC0, 0x00, 0x00, epic, sizeof(*epic), 300); if (result == sizeof(*epic)) { ep->is_epic = 1; memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); memset(product_info, 0, sizeof(struct edgeport_product_info)); product_info->NumPorts = epic->NumPorts; product_info->ProdInfoVer = 0; product_info->FirmwareMajorVersion = epic->MajorVersion; product_info->FirmwareMinorVersion = epic->MinorVersion; product_info->FirmwareBuildNumber = epic->BuildNumber; product_info->iDownloadFile = epic->iDownloadFile; product_info->EpicVer = epic->EpicVer; product_info->Epic = epic->Supports; product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; dump_product_info(ep, product_info); bits = &ep->epic_descriptor.Supports; dev_dbg(dev, "**EPIC descriptor:\n"); dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); result = 0; } else if (result >= 0) { dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", result); result = -EIO; } kfree(epic); return result; } /************************************************************************/ /************************************************************************/ /* U S B C A L L B A C K F U N C T I O N S */ /* U S B C A L L B A C K F U N C T I O N S */ /************************************************************************/ /************************************************************************/ /***************************************************************************** * edge_interrupt_callback * this is the callback function for when we have received data on the * interrupt endpoint. *****************************************************************************/ static void edge_interrupt_callback(struct urb *urb) { struct edgeport_serial *edge_serial = urb->context; struct device *dev; struct edgeport_port *edge_port; struct usb_serial_port *port; unsigned char *data = urb->transfer_buffer; int length = urb->actual_length; unsigned long flags; int bytes_avail; int position; int txCredits; int portNumber; int result; int status = urb->status; switch (status) { case 0: /* success */ break; case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); return; default: dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); goto exit; } dev = &edge_serial->serial->dev->dev; /* process this interrupt-read even if there are no ports open */ if (length) { usb_serial_debug_data(dev, __func__, length, data); if (length > 1) { bytes_avail = data[0] | (data[1] << 8); if (bytes_avail) { spin_lock_irqsave(&edge_serial->es_lock, flags); edge_serial->rxBytesAvail += bytes_avail; dev_dbg(dev, "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", __func__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress); if (edge_serial->rxBytesAvail > 0 && !edge_serial->read_in_progress) { dev_dbg(dev, "%s - posting a read\n", __func__); edge_serial->read_in_progress = true; /* we have pending bytes on the bulk in pipe, send a request */ result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); if (result) { dev_err(dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __func__, result); edge_serial->read_in_progress = false; } } spin_unlock_irqrestore(&edge_serial->es_lock, flags); } } /* grab the txcredits for the ports if available */ position = 2; portNumber = 0; while ((position < length) && (portNumber < edge_serial->serial->num_ports)) { txCredits = data[position] | (data[position+1] << 8); if (txCredits) { port = edge_serial->serial->port[portNumber]; edge_port = usb_get_serial_port_data(port); if (edge_port->open) { spin_lock_irqsave(&edge_port->ep_lock, flags); edge_port->txCredits += txCredits; spin_unlock_irqrestore(&edge_port->ep_lock, flags); dev_dbg(dev, "%s - txcredits for port%d = %d\n", __func__, portNumber, edge_port->txCredits); /* tell the tty driver that something has changed */ tty_port_tty_wakeup(&edge_port->port->port); /* Since we have more credit, check if more data can be sent */ send_more_port_data(edge_serial, edge_port); } } position += 2; ++portNumber; } } exit: result = usb_submit_urb(urb, GFP_ATOMIC); if (result) dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __func__, result); } /***************************************************************************** * edge_bulk_in_callback * this is the callback function for when we have received data on the * bulk in endpoint. *****************************************************************************/ static void edge_bulk_in_callback(struct urb *urb) { struct edgeport_serial *edge_serial = urb->context; struct device *dev; unsigned char *data = urb->transfer_buffer; int retval; __u16 raw_data_length; int status = urb->status; unsigned long flags; if (status) { dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); edge_serial->read_in_progress = false; return; } if (urb->actual_length == 0) { dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); edge_serial->read_in_progress = false; return; } dev = &edge_serial->serial->dev->dev; raw_data_length = urb->actual_length; usb_serial_debug_data(dev, __func__, raw_data_length, data); spin_lock_irqsave(&edge_serial->es_lock, flags); /* decrement our rxBytes available by the number that we just got */ edge_serial->rxBytesAvail -= raw_data_length; dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, raw_data_length, edge_serial->rxBytesAvail); process_rcvd_data(edge_serial, data, urb->actual_length); /* check to see if there's any more data for us to read */ if (edge_serial->rxBytesAvail > 0) { dev_dbg(dev, "%s - posting a read\n", __func__); retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); if (retval) { dev_err(dev, "%s - usb_submit_urb(read bulk) failed, retval = %d\n", __func__, retval); edge_serial->read_in_progress = false; } } else { edge_serial->read_in_progress = false; } spin_unlock_irqrestore(&edge_serial->es_lock, flags); } /***************************************************************************** * edge_bulk_out_data_callback * this is the callback function for when we have finished sending * serial data on the bulk out endpoint. *****************************************************************************/ static void edge_bulk_out_data_callback(struct urb *urb) { struct edgeport_port *edge_port = urb->context; int status = urb->status; if (status) { dev_dbg(&urb->dev->dev, "%s - nonzero write bulk status received: %d\n", __func__, status); } if (edge_port->open) tty_port_tty_wakeup(&edge_port->port->port); /* Release the Write URB */ edge_port->write_in_progress = false; /* Check if more data needs to be sent */ send_more_port_data((struct edgeport_serial *) (usb_get_serial_data(edge_port->port->serial)), edge_port); } /***************************************************************************** * BulkOutCmdCallback * this is the callback function for when we have finished sending a * command on the bulk out endpoint. *****************************************************************************/ static void edge_bulk_out_cmd_callback(struct urb *urb) { struct edgeport_port *edge_port = urb->context; int status = urb->status; atomic_dec(&CmdUrbs); dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", __func__, urb, atomic_read(&CmdUrbs)); /* clean up the transfer buffer */ kfree(urb->transfer_buffer); /* Free the command urb */ usb_free_urb(urb); if (status) { dev_dbg(&urb->dev->dev, "%s - nonzero write bulk status received: %d\n", __func__, status); return; } /* tell the tty driver that something has changed */ if (edge_port->open) tty_port_tty_wakeup(&edge_port->port->port); /* we have completed the command */ edge_port->commandPending = false; wake_up(&edge_port->wait_command); } /***************************************************************************** * Driver tty interface functions *****************************************************************************/ /***************************************************************************** * SerialOpen * this function is called by the tty driver when a port is opened * If successful, we return 0 * Otherwise we return a negative error number. *****************************************************************************/ 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 device *dev = &port->dev; struct usb_serial *serial; struct edgeport_serial *edge_serial; int response; if (edge_port == NULL) return -ENODEV; /* see if we've set up our endpoint info yet (can't set it up in edge_startup as the structures were not set up at that time.) */ serial = port->serial; edge_serial = usb_get_serial_data(serial); if (edge_serial == NULL) return -ENODEV; if (edge_serial->interrupt_in_buffer == NULL) { struct usb_serial_port *port0 = serial->port[0]; /* not set up yet, so do it now */ edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer; edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress; edge_serial->interrupt_read_urb = port0->interrupt_in_urb; edge_serial->bulk_in_buffer = port0->bulk_in_buffer; edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress; edge_serial->read_urb = port0->read_urb; edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress; /* set up our interrupt urb */ usb_fill_int_urb(edge_serial->interrupt_read_urb, serial->dev, usb_rcvintpipe(serial->dev, port0->interrupt_in_endpointAddress), port0->interrupt_in_buffer, edge_serial->interrupt_read_urb->transfer_buffer_length, edge_interrupt_callback, edge_serial, edge_serial->interrupt_read_urb->interval); /* set up our bulk in urb */ usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, usb_rcvbulkpipe(serial->dev, port0->bulk_in_endpointAddress), port0->bulk_in_buffer, edge_serial->read_urb->transfer_buffer_length, edge_bulk_in_callback, edge_serial); edge_serial->read_in_progress = false; /* start interrupt read for this edgeport * this interrupt will continue as long * as the edgeport is connected */ response = usb_submit_urb(edge_serial->interrupt_read_urb, GFP_KERNEL); if (response) { dev_err(dev, "%s - Error %d submitting control urb\n", __func__, response); } } /* initialize our wait queues */ init_waitqueue_head(&edge_port->wait_open); init_waitqueue_head(&edge_port->wait_chase); init_waitqueue_head(&edge_port->wait_command); /* initialize our port settings */ edge_port->txCredits = 0; /* Can't send any data yet */ /* Must always set this bit to enable ints! */ edge_port->shadowMCR = MCR_MASTER_IE; edge_port->chaseResponsePending = false; /* send a open port command */ edge_port->openPending = true; edge_port->open = false; response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); if (response < 0) { dev_err(dev, "%s - error sending open port command\n", __func__); edge_port->openPending = false; return -ENODEV; } /* now wait for the port to be completely opened */ wait_event_timeout(edge_port->wait_open, !edge_port->openPending, OPEN_TIMEOUT); if (!edge_port->open) { /* open timed out */ dev_dbg(dev, "%s - open timedout\n", __func__); edge_port->openPending = false; return -ENODEV; } /* create the txfifo */ edge_port->txfifo.head = 0; edge_port->txfifo.tail = 0; edge_port->txfifo.count = 0; edge_port->txfifo.size = edge_port->maxTxCredits; edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); if (!edge_port->txfifo.fifo) { edge_close(port); return -ENOMEM; } /* Allocate a URB for the write */ edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); edge_port->write_in_progress = false; if (!edge_port->write_urb) { edge_close(port); return -ENOMEM; } dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", __func__, edge_port->maxTxCredits); return 0; } /************************************************************************ * * block_until_chase_response * * This function will block the close until one of the following: * 1. Response to our Chase comes from Edgeport * 2. A timeout of 10 seconds without activity has expired * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) * ************************************************************************/ static void block_until_chase_response(struct edgeport_port *edge_port) { struct device *dev = &edge_port->port->dev; DEFINE_WAIT(wait); __u16 lastCredits; int timeout = 1*HZ; int loop = 10; while (1) { /* Save Last credits */ lastCredits = edge_port->txCredits; /* Did we get our Chase response */ if (!edge_port->chaseResponsePending) { dev_dbg(dev, "%s - Got Chase Response\n", __func__); /* did we get all of our credit back? */ if (edge_port->txCredits == edge_port->maxTxCredits) { dev_dbg(dev, "%s - Got all credits\n", __func__); return; } } /* Block the thread for a while */ prepare_to_wait(&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); schedule_timeout(timeout); finish_wait(&edge_port->wait_chase, &wait); if (lastCredits == edge_port->txCredits) { /* No activity.. count down. */ loop--; if (loop == 0) { edge_port->chaseResponsePending = false; dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); return; } } else { /* Reset timeout value back to 10 seconds */ dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, lastCredits, edge_port->txCredits); loop = 10; } } } /************************************************************************ * * block_until_tx_empty * * This function will block the close until one of the following: * 1. TX count are 0 * 2. The edgeport has stopped * 3. A timeout of 3 seconds without activity has expired * ************************************************************************/ static void block_until_tx_empty(struct edgeport_port *edge_port) { struct device *dev = &edge_port->port->dev; DEFINE_WAIT(wait); struct TxFifo *fifo = &edge_port->txfifo; __u32 lastCount; int timeout = HZ/10; int loop = 30; while (1) { /* Save Last count */ lastCount = fifo->count; /* Is the Edgeport Buffer empty? */ if (lastCount == 0) { dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); return; } /* Block the thread for a while */ prepare_to_wait(&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); schedule_timeout(timeout); finish_wait(&edge_port->wait_chase, &wait); dev_dbg(dev, "%s wait\n", __func__); if (lastCount == fifo->count) { /* No activity.. count down. */ loop--; if (loop == 0) { dev_dbg(dev, "%s - TIMEOUT\n", __func__); return; } } else { /* Reset timeout value back to seconds */ loop = 30; } } } /***************************************************************************** * edge_close * this function is called by the tty driver when a port is closed *****************************************************************************/ static void edge_close(struct usb_serial_port *port) { struct edgeport_serial *edge_serial; struct edgeport_port *edge_port; int status; edge_serial = usb_get_serial_data(port->serial); edge_port = usb_get_serial_port_data(port); if (edge_serial == NULL || edge_port == NULL) return; /* block until tx is empty */ block_until_tx_empty(edge_port); edge_port->closePending = true; if (!edge_serial->is_epic || edge_serial->epic_descriptor.Supports.IOSPChase) { /* flush and chase */ edge_port->chaseResponsePending = true; dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); if (status == 0) /* block until chase finished */ block_until_chase_response(edge_port); else edge_port->chaseResponsePending = false; } if (!edge_serial->is_epic || edge_serial->epic_descriptor.Supports.IOSPClose) { /* close the port */ dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); } /* port->close = true; */ edge_port->closePending = false; edge_port->open = false; edge_port->openPending = false; usb_kill_urb(edge_port->write_urb); if (edge_port->write_urb) { /* if this urb had a transfer buffer already (old transfer) free it */ kfree(edge_port->write_urb->transfer_buffer); usb_free_urb(edge_port->write_urb); edge_port->write_urb = NULL; } kfree(edge_port->txfifo.fifo); edge_port->txfifo.fifo = NULL; } /***************************************************************************** * SerialWrite * this function is called by the tty driver when data should be written * to the port. * If successful, we return the number of bytes written, otherwise we * return a negative error number. *****************************************************************************/ 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); struct TxFifo *fifo; int copySize; int bytesleft; int firsthalf; int secondhalf; unsigned long flags; if (edge_port == NULL) return -ENODEV; /* get a pointer to the Tx fifo */ fifo = &edge_port->txfifo; spin_lock_irqsave(&edge_port->ep_lock, flags); /* calculate number of bytes to put in fifo */ copySize = min((unsigned int)count, (edge_port->txCredits - fifo->count)); dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", __func__, count, edge_port->txCredits - fifo->count, copySize); /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */ if (copySize == 0) { dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); goto finish_write; } /* queue the data * since we can never overflow the buffer we do not have to check for a * full condition * * the copy is done is two parts -- first fill to the end of the buffer * then copy the reset from the start of the buffer */ bytesleft = fifo->size - fifo->head; firsthalf = min(bytesleft, copySize); dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, firsthalf, bytesleft); /* now copy our data */ memcpy(&fifo->fifo[fifo->head], data, firsthalf); usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); /* update the index and size */ fifo->head += firsthalf; fifo->count += firsthalf; /* wrap the index */ if (fifo->head == fifo->size) fifo->head = 0; secondhalf = copySize-firsthalf; if (secondhalf) { dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); /* update the index and size */ fifo->count += secondhalf; fifo->head += secondhalf; /* No need to check for wrap since we can not get to end of * the fifo in this part */ } finish_write: spin_unlock_irqrestore(&edge_port->ep_lock, flags); send_more_port_data((struct edgeport_serial *) usb_get_serial_data(port->serial), edge_port); dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", __func__, copySize, edge_port->txCredits, fifo->count); return copySize; } /************************************************************************ * * send_more_port_data() * * This routine attempts to write additional UART transmit data * to a port over the USB bulk pipe. It is called (1) when new * data has been written to a port's TxBuffer from higher layers * (2) when the peripheral sends us additional TxCredits indicating * that it can accept more Tx data for a given port; and (3) when * a bulk write completes successfully and we want to see if we * can transmit more. * ************************************************************************/ static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port) { struct TxFifo *fifo = &edge_port->txfifo; struct device *dev = &edge_port->port->dev; struct urb *urb; unsigned char *buffer; int status; int count; int bytesleft; int firsthalf; int secondhalf; unsigned long flags; spin_lock_irqsave(&edge_port->ep_lock, flags); if (edge_port->write_in_progress || !edge_port->open || (fifo->count == 0)) { dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", __func__, fifo->count, edge_port->write_in_progress); goto exit_send; } /* since the amount of data in the fifo will always fit into the * edgeport buffer we do not need to check the write length * * Do we have enough credits for this port to make it worthwhile * to bother queueing a write. If it's too small, say a few bytes, * it's better to wait for more credits so we can do a larger write. */ if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", __func__, fifo->count, edge_port->txCredits); goto exit_send; } /* lock this write */ edge_port->write_in_progress = true; /* get a pointer to the write_urb */ urb = edge_port->write_urb; /* make sure transfer buffer is freed */ kfree(urb->transfer_buffer); urb->transfer_buffer = NULL; /* build the data header for the buffer and port that we are about to send out */ count = fifo->count; buffer = kmalloc(count+2, GFP_ATOMIC); if (!buffer) { edge_port->write_in_progress = false; goto exit_send; } buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); /* now copy our data */ bytesleft = fifo->size - fifo->tail; firsthalf = min(bytesleft, count); memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); fifo->tail += firsthalf; fifo->count -= firsthalf; if (fifo->tail == fifo->size) fifo->tail = 0; secondhalf = count-firsthalf; if (secondhalf) { memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf); fifo->tail += secondhalf; fifo->count -= secondhalf; } if (count) usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); /* fill up the urb with all of our data and submit it */ usb_fill_bulk_urb(urb, edge_serial->serial->dev, usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), buffer, count+2, edge_bulk_out_data_callback, edge_port); /* decrement the number of credits we have by the number we just sent */ edge_port->txCredits -= count; edge_port->port->icount.tx += count; status = usb_submit_urb(urb, GFP_ATOMIC); if (status) { /* something went wrong */ dev_err_console(edge_port->port, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __func__, status); edge_port->write_in_progress = false; /* revert the credits as something bad happened. */ edge_port->txCredits += count; edge_port->port->icount.tx -= count; } dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", __func__, count, edge_port->txCredits, fifo->count); exit_send: spin_unlock_irqrestore(&edge_port->ep_lock, flags); } /***************************************************************************** * edge_write_room * this function is called by the tty driver when it wants to know how * many bytes of data we can accept for a specific port. If successful, * we return the amount of room that we have for this port (the txCredits) * otherwise we return a negative error number. *****************************************************************************/ 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; unsigned long flags; if (edge_port == NULL) return 0; if (edge_port->closePending) return 0; if (!edge_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); return 0; } /* total of both buffers is still txCredit */ spin_lock_irqsave(&edge_port->ep_lock, flags); room = edge_port->txCredits - edge_port->txfifo.count; spin_unlock_irqrestore(&edge_port->ep_lock, flags); dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); return room; } /***************************************************************************** * edge_chars_in_buffer * this function is called by the tty driver when it wants to know how * many bytes of data we currently have outstanding in the port (data that * has been written, but hasn't made it out the port yet) * If successful, we return the number of bytes left to be written in the * system, * Otherwise we return a negative error number. *****************************************************************************/ 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 num_chars; unsigned long flags; if (edge_port == NULL) return 0; if (edge_port->closePending) return 0; if (!edge_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); return 0; } spin_lock_irqsave(&edge_port->ep_lock, flags); num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count; spin_unlock_irqrestore(&edge_port->ep_lock, flags); if (num_chars) { dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars); } return num_chars; } /***************************************************************************** * SerialThrottle * this function is called by the tty driver when it wants to stop the data * being read from the port. *****************************************************************************/ static void edge_throttle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); int status; if (edge_port == NULL) return; if (!edge_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); 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) return; } /* if we are implementing RTS/CTS, toggle that line */ if (C_CRTSCTS(tty)) { edge_port->shadowMCR &= ~MCR_RTS; status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); if (status != 0) return; } } /***************************************************************************** * edge_unthrottle * this function is called by the tty driver when it wants to resume the * data being read from the port (called after SerialThrottle is called) *****************************************************************************/ static void edge_unthrottle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); int status; if (edge_port == NULL) return; if (!edge_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); 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) return; } /* if we are implementing RTS/CTS, toggle that line */ if (C_CRTSCTS(tty)) { edge_port->shadowMCR |= MCR_RTS; send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); } } /***************************************************************************** * SerialSetTermios * this function is called by the tty driver when it wants to change * the termios structure *****************************************************************************/ static void edge_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); if (edge_port == NULL) return; if (!edge_port->open) { dev_dbg(&port->dev, "%s - port not opened\n", __func__); return; } /* change the port settings to the new ones specified */ change_port_settings(tty, edge_port, old_termios); } /***************************************************************************** * get_lsr_info - get line status register info * * Purpose: Let user call ioctl() to get info when the UART physically * is emptied. On bus types like RS485, the transmitter must * release the bus after transmitting. This must be done when * the transmit shift register is empty, not be done when the * transmit holding register is empty. This functionality * allows an RS485 driver to be written in user space. *****************************************************************************/ static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value) { unsigned int result = 0; unsigned long flags; spin_lock_irqsave(&edge_port->ep_lock, flags); if (edge_port->maxTxCredits == edge_port->txCredits && edge_port->txfifo.count == 0) { dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); result = TIOCSER_TEMT; } spin_unlock_irqrestore(&edge_port->ep_lock, flags); if (copy_to_user(value, &result, sizeof(int))) return -EFAULT; return 0; } static int edge_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); unsigned int mcr; mcr = edge_port->shadowMCR; 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->shadowMCR = mcr; send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); return 0; } static int edge_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); unsigned int result = 0; unsigned int msr; unsigned int mcr; msr = edge_port->shadowMSR; mcr = edge_port->shadowMCR; 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 */ return result; } static int get_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); ss->type = PORT_16550A; ss->line = edge_port->port->minor; ss->port = edge_port->port->port_number; ss->irq = 0; ss->xmit_fifo_size = edge_port->maxTxCredits; ss->baud_base = 9600; ss->close_delay = 5*HZ; ss->closing_wait = 30*HZ; return 0; } /***************************************************************************** * SerialIoctl * this function handles any ioctl calls to the driver *****************************************************************************/ static int edge_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; struct edgeport_port *edge_port = usb_get_serial_port_data(port); switch (cmd) { case TIOCSERGETLSR: dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); return get_lsr_info(edge_port, (unsigned int __user *) arg); } return -ENOIOCTLCMD; } /***************************************************************************** * SerialBreak * this function sends a break to the port *****************************************************************************/ 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); struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); int status; if (!edge_serial->is_epic || edge_serial->epic_descriptor.Supports.IOSPChase) { /* flush and chase */ edge_port->chaseResponsePending = true; dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); if (status == 0) { /* block until chase finished */ block_until_chase_response(edge_port); } else { edge_port->chaseResponsePending = false; } } if (!edge_serial->is_epic || edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { if (break_state == -1) { dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); status = send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_BREAK, 0); } else { dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CLEAR_BREAK, 0); } if (status) dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", __func__); } } /***************************************************************************** * process_rcvd_data * this function handles the data received on the bulk in pipe. *****************************************************************************/ static void process_rcvd_data(struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength) { struct device *dev = &edge_serial->serial->dev->dev; struct usb_serial_port *port; struct edgeport_port *edge_port; __u16 lastBufferLength; __u16 rxLen; lastBufferLength = bufferLength + 1; while (bufferLength > 0) { /* failsafe incase we get a message that we don't understand */ if (lastBufferLength == bufferLength) { dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); break; } lastBufferLength = bufferLength; switch (edge_serial->rxState) { case EXPECT_HDR1: edge_serial->rxHeader1 = *buffer; ++buffer; --bufferLength; if (bufferLength == 0) { edge_serial->rxState = EXPECT_HDR2; break; } /* Fall through */ case EXPECT_HDR2: edge_serial->rxHeader2 = *buffer; ++buffer; --bufferLength; dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, edge_serial->rxHeader1, edge_serial->rxHeader2); /* Process depending on whether this header is * data or status */ if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { /* Decode this status header and go to * EXPECT_HDR1 (if we can process the status * with only 2 bytes), or go to EXPECT_HDR3 to * get the third byte. */ edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE( edge_serial->rxHeader1); if (!IOSP_STATUS_IS_2BYTE( edge_serial->rxStatusCode)) { /* This status needs additional bytes. * Save what we have and then wait for * more data. */ edge_serial->rxStatusParam = edge_serial->rxHeader2; edge_serial->rxState = EXPECT_HDR3; break; } /* We have all the header bytes, process the status now */ process_rcvd_status(edge_serial, edge_serial->rxHeader2, 0); edge_serial->rxState = EXPECT_HDR1; break; } edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2); dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__, edge_serial->rxPort, edge_serial->rxBytesRemaining); if (bufferLength == 0) { edge_serial->rxState = EXPECT_DATA; break; } /* Fall through */ case EXPECT_DATA: /* Expect data */ if (bufferLength < edge_serial->rxBytesRemaining) { rxLen = bufferLength; /* Expect data to start next buffer */ edge_serial->rxState = EXPECT_DATA; } else { /* BufLen >= RxBytesRemaining */ rxLen = edge_serial->rxBytesRemaining; /* Start another header next time */ edge_serial->rxState = EXPECT_HDR1; } bufferLength -= rxLen; edge_serial->rxBytesRemaining -= rxLen; /* spit this data back into the tty driver if this port is open */ if (rxLen) { port = edge_serial->serial->port[ edge_serial->rxPort]; edge_port = usb_get_serial_port_data(port); if (edge_port->open) { dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", __func__, rxLen, edge_serial->rxPort); edge_tty_recv(edge_port->port, buffer, rxLen); edge_port->port->icount.rx += rxLen; } buffer += rxLen; } break; case EXPECT_HDR3: /* Expect 3rd byte of status header */ edge_serial->rxHeader3 = *buffer; ++buffer; --bufferLength; /* We have all the header bytes, process the status now */ process_rcvd_status(edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3); edge_serial->rxState = EXPECT_HDR1; break; } } } /***************************************************************************** * process_rcvd_status * this function handles the any status messages received on the * bulk in pipe. *****************************************************************************/ static void process_rcvd_status(struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3) { struct usb_serial_port *port; struct edgeport_port *edge_port; struct tty_struct *tty; struct device *dev; __u8 code = edge_serial->rxStatusCode; /* switch the port pointer to the one being currently talked about */ port = edge_serial->serial->port[edge_serial->rxPort]; edge_port = usb_get_serial_port_data(port); if (edge_port == NULL) { dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __func__, edge_serial->rxPort); return; } dev = &port->dev; if (code == IOSP_EXT_STATUS) { switch (byte2) { case IOSP_EXT_STATUS_CHASE_RSP: /* we want to do EXT status regardless of port * open/closed */ dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", __func__, edge_serial->rxPort, byte3); /* Currently, the only EXT_STATUS is Chase, so process * here instead of one more call to one more subroutine * If/when more EXT_STATUS, there'll be more work to do * Also, we currently clear flag and close the port * regardless of content of above's Byte3. * We could choose to do something else when Byte3 says * Timeout on Chase from Edgeport, like wait longer in * block_until_chase_response, but for now we don't. */ edge_port->chaseResponsePending = false; wake_up(&edge_port->wait_chase); return; case IOSP_EXT_STATUS_RX_CHECK_RSP: dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __func__, edge_serial->rxPort, byte3); /* Port->RxCheckRsp = true; */ return; } } if (code == IOSP_STATUS_OPEN_RSP) { edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); edge_port->maxTxCredits = edge_port->txCredits; dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", __func__, edge_serial->rxPort, byte2, edge_port->txCredits); handle_new_msr(edge_port, byte2); /* send the current line settings to the port so we are in sync with any further termios calls */ tty = tty_port_tty_get(&edge_port->port->port); if (tty) { change_port_settings(tty, edge_port, &tty->termios); tty_kref_put(tty); } /* we have completed the open */ edge_port->openPending = false; edge_port->open = true; wake_up(&edge_port->wait_open); return; } /* If port is closed, silently discard all rcvd status. We can * have cases where buffered status is received AFTER the close * port command is sent to the Edgeport. */ if (!edge_port->open || edge_port->closePending) return; switch (code) { /* Not currently sent by Edgeport */ case IOSP_STATUS_LSR: dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", __func__, edge_serial->rxPort, byte2); handle_new_lsr(edge_port, false, byte2, 0); break; case IOSP_STATUS_LSR_DATA: dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", __func__, edge_serial->rxPort, byte2, byte3); /* byte2 is LSR Register */ /* byte3 is broken data byte */ handle_new_lsr(edge_port, true, byte2, byte3); break; /* * case IOSP_EXT_4_STATUS: * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", * __func__, edge_serial->rxPort, byte2, byte3); * break; */ case IOSP_STATUS_MSR: dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", __func__, edge_serial->rxPort, byte2); /* * Process this new modem status and generate appropriate * events, etc, based on the new status. This routine * also saves the MSR in Port->ShadowMsr. */ handle_new_msr(edge_port, byte2); break; default: dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); break; } } /***************************************************************************** * edge_tty_recv * this function passes data on to the tty flip buffer *****************************************************************************/ static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, int length) { int cnt; cnt = tty_insert_flip_string(&port->port, data, length); if (cnt < length) { dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", __func__, length - cnt); } data += cnt; length -= cnt; tty_flip_buffer_push(&port->port); } /***************************************************************************** * handle_new_msr * this function handles any change to the msr register for a port. *****************************************************************************/ static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) { struct async_icount *icount; if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { icount = &edge_port->port->icount; /* update input line counters */ if (newMsr & EDGEPORT_MSR_DELTA_CTS) icount->cts++; if (newMsr & EDGEPORT_MSR_DELTA_DSR) icount->dsr++; if (newMsr & EDGEPORT_MSR_DELTA_CD) icount->dcd++; if (newMsr & EDGEPORT_MSR_DELTA_RI) icount->rng++; wake_up_interruptible(&edge_port->port->port.delta_msr_wait); } /* Save the new modem status */ edge_port->shadowMSR = newMsr & 0xf0; } /***************************************************************************** * handle_new_lsr * this function handles any change to the lsr register for a port. *****************************************************************************/ static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data) { __u8 newLsr = (__u8) (lsr & (__u8) (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); struct async_icount *icount; edge_port->shadowLSR = lsr; if (newLsr & LSR_BREAK) { /* * Parity and Framing errors only count if they * occur exclusive of a break being * received. */ newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); } /* Place LSR data byte into Rx buffer */ if (lsrData) edge_tty_recv(edge_port->port, &data, 1); /* update input line counters */ icount = &edge_port->port->icount; if (newLsr & LSR_BREAK) icount->brk++; if (newLsr & LSR_OVER_ERR) icount->overrun++; if (newLsr & LSR_PAR_ERR) icount->parity++; if (newLsr & LSR_FRM_ERR) icount->frame++; } /**************************************************************************** * sram_write * writes a number of bytes to the Edgeport device's sram starting at the * given address. * If successful returns the number of bytes written, otherwise it returns * a negative error number of the problem. ****************************************************************************/ static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, const __u8 *data) { int result; __u16 current_length; unsigned char *transfer_buffer; dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); transfer_buffer = kmalloc(64, GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; /* need to split these writes up into 64 byte chunks */ result = 0; while (length > 0) { if (length > 64) current_length = 64; else current_length = length; /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ memcpy(transfer_buffer, data, current_length); result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM, 0x40, addr, extAddr, transfer_buffer, current_length, 300); if (result < 0) break; length -= current_length; addr += current_length; data += current_length; } kfree(transfer_buffer); return result; } /**************************************************************************** * rom_write * writes a number of bytes to the Edgeport device's ROM starting at the * given address. * If successful returns the number of bytes written, otherwise it returns * a negative error number of the problem. ****************************************************************************/ static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, const __u8 *data) { int result; __u16 current_length; unsigned char *transfer_buffer; transfer_buffer = kmalloc(64, GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; /* need to split these writes up into 64 byte chunks */ result = 0; while (length > 0) { if (length > 64) current_length = 64; else current_length = length; memcpy(transfer_buffer, data, current_length); result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM, 0x40, addr, extAddr, transfer_buffer, current_length, 300); if (result < 0) break; length -= current_length; addr += current_length; data += current_length; } kfree(transfer_buffer); return result; } /**************************************************************************** * rom_read * reads a number of bytes from the Edgeport device starting at the given * address. * Returns zero on success or a negative error number. ****************************************************************************/ static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) { int result; __u16 current_length; unsigned char *transfer_buffer; transfer_buffer = kmalloc(64, GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; /* need to split these reads up into 64 byte chunks */ result = 0; while (length > 0) { if (length > 64) current_length = 64; else current_length = length; result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM, 0xC0, addr, extAddr, transfer_buffer, current_length, 300); if (result < current_length) { if (result >= 0) result = -EIO; break; } memcpy(data, transfer_buffer, current_length); length -= current_length; addr += current_length; data += current_length; result = 0; } kfree(transfer_buffer); return result; } /**************************************************************************** * send_iosp_ext_cmd * Is used to send a IOSP message to the Edgeport device ****************************************************************************/ static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, __u8 param) { unsigned char *buffer; unsigned char *currentCommand; int length = 0; int status = 0; buffer = kmalloc(10, GFP_ATOMIC); if (!buffer) return -ENOMEM; currentCommand = buffer; MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, command, param); status = write_cmd_usb(edge_port, buffer, length); if (status) { /* something bad happened, let's free up the memory */ kfree(buffer); } return status; } /***************************************************************************** * write_cmd_usb * this function writes the given buffer out to the bulk write endpoint. *****************************************************************************/ static int write_cmd_usb(struct edgeport_port *edge_port, unsigned char *buffer, int length) { struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); struct device *dev = &edge_port->port->dev; int status = 0; struct urb *urb; usb_serial_debug_data(dev, __func__, length, buffer); /* Allocate our next urb */ urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) return -ENOMEM; atomic_inc(&CmdUrbs); dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", __func__, urb, atomic_read(&CmdUrbs)); usb_fill_bulk_urb(urb, edge_serial->serial->dev, usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), buffer, length, edge_bulk_out_cmd_callback, edge_port); edge_port->commandPending = true; status = usb_submit_urb(urb, GFP_ATOMIC); if (status) { /* something went wrong */ dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __func__, status); usb_free_urb(urb); atomic_dec(&CmdUrbs); return status; } #if 0 wait_event(&edge_port->wait_command, !edge_port->commandPending); if (edge_port->commandPending) { /* command timed out */ dev_dbg(dev, "%s - command timed out\n", __func__); status = -EINVAL; } #endif return status; } /***************************************************************************** * send_cmd_write_baud_rate * this function sends the proper command to change the baud rate of the * specified port. *****************************************************************************/ static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, int baudRate) { struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); struct device *dev = &edge_port->port->dev; unsigned char *cmdBuffer; unsigned char *currCmd; int cmdLen = 0; int divisor; int status; u32 number = edge_port->port->port_number; if (edge_serial->is_epic && !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", baudRate); return 0; } dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); status = calc_baud_rate_divisor(dev, baudRate, &divisor); if (status) { dev_err(dev, "%s - bad baud rate\n", __func__); return status; } /* Alloc memory for the string of commands. */ cmdBuffer = kmalloc(0x100, GFP_ATOMIC); if (!cmdBuffer) return -ENOMEM; currCmd = cmdBuffer; /* Enable access to divisor latch */ MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); /* Write the divisor itself */ MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); /* Restore original value to disable access to divisor latch */ MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, edge_port->shadowLCR); status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); if (status) { /* something bad happened, let's free up the memory */ kfree(cmdBuffer); } return status; } /***************************************************************************** * calc_baud_rate_divisor * this function calculates the proper baud rate divisor for the specified * baud rate. *****************************************************************************/ static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) { int i; __u16 custom; for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { if (divisor_table[i].BaudRate == baudrate) { *divisor = divisor_table[i].Divisor; return 0; } } /* We have tried all of the standard baud rates * lets try to calculate the divisor for this baud rate * Make sure the baud rate is reasonable */ if (baudrate > 50 && baudrate < 230400) { /* get divisor */ custom = (__u16)((230400L + baudrate/2) / baudrate); *divisor = custom; dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); return 0; } return -1; } /***************************************************************************** * send_cmd_write_uart_register * this function builds up a uart register message and sends to the device. *****************************************************************************/ static int send_cmd_write_uart_register(struct edgeport_port *edge_port, __u8 regNum, __u8 regValue) { struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); struct device *dev = &edge_port->port->dev; unsigned char *cmdBuffer; unsigned char *currCmd; unsigned long cmdLen = 0; int status; dev_dbg(dev, "%s - write to %s register 0x%02x\n", (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); if (edge_serial->is_epic && !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && regNum == MCR) { dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); return 0; } if (edge_serial->is_epic && !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && regNum == LCR) { dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); return 0; } /* Alloc memory for the string of commands. */ cmdBuffer = kmalloc(0x10, GFP_ATOMIC); if (cmdBuffer == NULL) return -ENOMEM; currCmd = cmdBuffer; /* Build a cmd in the buffer to write the given register */ MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, regNum, regValue); status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); if (status) { /* something bad happened, let's free up the memory */ kfree(cmdBuffer); } return status; } /***************************************************************************** * change_port_settings * This routine is called to set the UART on the device to match the * specified new settings. *****************************************************************************/ static void change_port_settings(struct tty_struct *tty, struct edgeport_port *edge_port, struct ktermios *old_termios) { struct device *dev = &edge_port->port->dev; struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); int baud; unsigned cflag; __u8 mask = 0xff; __u8 lData; __u8 lParity; __u8 lStop; __u8 rxFlow; __u8 txFlow; int status; if (!edge_port->open && !edge_port->openPending) { dev_dbg(dev, "%s - port not opened\n", __func__); return; } cflag = tty->termios.c_cflag; switch (cflag & CSIZE) { case CS5: lData = LCR_BITS_5; mask = 0x1f; dev_dbg(dev, "%s - data bits = 5\n", __func__); break; case CS6: lData = LCR_BITS_6; mask = 0x3f; dev_dbg(dev, "%s - data bits = 6\n", __func__); break; case CS7: lData = LCR_BITS_7; mask = 0x7f; dev_dbg(dev, "%s - data bits = 7\n", __func__); break; default: case CS8: lData = LCR_BITS_8; dev_dbg(dev, "%s - data bits = 8\n", __func__); break; } lParity = LCR_PAR_NONE; if (cflag & PARENB) { if (cflag & CMSPAR) { if (cflag & PARODD) { lParity = LCR_PAR_MARK; dev_dbg(dev, "%s - parity = mark\n", __func__); } else { lParity = LCR_PAR_SPACE; dev_dbg(dev, "%s - parity = space\n", __func__); } } else if (cflag & PARODD) { lParity = LCR_PAR_ODD; dev_dbg(dev, "%s - parity = odd\n", __func__); } else { lParity = LCR_PAR_EVEN; dev_dbg(dev, "%s - parity = even\n", __func__); } } else { dev_dbg(dev, "%s - parity = none\n", __func__); } if (cflag & CSTOPB) { lStop = LCR_STOP_2; dev_dbg(dev, "%s - stop bits = 2\n", __func__); } else { lStop = LCR_STOP_1; dev_dbg(dev, "%s - stop bits = 1\n", __func__); } /* figure out the flow control settings */ rxFlow = txFlow = 0x00; if (cflag & CRTSCTS) { rxFlow |= IOSP_RX_FLOW_RTS; txFlow |= IOSP_TX_FLOW_CTS; dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); } else { dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); } /* if we are implementing XON/XOFF, set the start and stop character in the device */ if (I_IXOFF(tty) || I_IXON(tty)) { unsigned char stop_char = STOP_CHAR(tty); unsigned char start_char = START_CHAR(tty); if (!edge_serial->is_epic || edge_serial->epic_descriptor.Supports.IOSPSetXChar) { send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XON_CHAR, start_char); send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char); } /* if we are implementing INBOUND XON/XOFF */ if (I_IXOFF(tty)) { rxFlow |= IOSP_RX_FLOW_XON_XOFF; dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", __func__, start_char, stop_char); } else { dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); } /* if we are implementing OUTBOUND XON/XOFF */ if (I_IXON(tty)) { txFlow |= IOSP_TX_FLOW_XON_XOFF; dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", __func__, start_char, stop_char); } else { dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); } } /* Set flow control to the configured value */ if (!edge_serial->is_epic || edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); if (!edge_serial->is_epic || edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); edge_port->shadowLCR |= (lData | lParity | lStop); edge_port->validDataMask = mask; /* Send the updated LCR value to the EdgePort */ status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR); if (status != 0) return; /* set up the MCR register and send it to the EdgePort */ edge_port->shadowMCR = MCR_MASTER_IE; if (cflag & CBAUD) edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); if (status != 0) return; /* Determine divisor based on baud rate */ baud = tty_get_baud_rate(tty); if (!baud) { /* pick a default, any default... */ baud = 9600; } dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); status = send_cmd_write_baud_rate(edge_port, baud); if (status == -1) { /* Speed change was not possible - put back the old speed */ baud = tty_termios_baud_rate(old_termios); tty_encode_baud_rate(tty, baud, baud); } } /**************************************************************************** * unicode_to_ascii * Turns a string from Unicode into ASCII. * Doesn't do a good job with any characters that are outside the normal * ASCII range, but it's only for debugging... * NOTE: expects the unicode in LE format ****************************************************************************/ static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size) { int i; if (buflen <= 0) /* never happens, but... */ return; --buflen; /* space for nul */ for (i = 0; i < unicode_size; i++) { if (i >= buflen) break; string[i] = (char)(le16_to_cpu(unicode[i])); } string[i] = 0x00; } /**************************************************************************** * get_manufacturing_desc * reads in the manufacturing descriptor and stores it into the serial * structure. ****************************************************************************/ static void get_manufacturing_desc(struct edgeport_serial *edge_serial) { struct device *dev = &edge_serial->serial->dev->dev; int response; dev_dbg(dev, "getting manufacturer descriptor\n"); response = rom_read(edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN, (__u8 *)(&edge_serial->manuf_descriptor)); if (response < 0) { dev_err(dev, "error in getting manufacturer descriptor: %d\n", response); } else { char string[30]; dev_dbg(dev, "**Manufacturer Descriptor\n"); dev_dbg(dev, " RomSize: %dK\n", edge_serial->manuf_descriptor.RomSize); dev_dbg(dev, " RamSize: %dK\n", edge_serial->manuf_descriptor.RamSize); dev_dbg(dev, " CpuRev: %d\n", edge_serial->manuf_descriptor.CpuRev); dev_dbg(dev, " BoardRev: %d\n", edge_serial->manuf_descriptor.BoardRev); dev_dbg(dev, " NumPorts: %d\n", edge_serial->manuf_descriptor.NumPorts); dev_dbg(dev, " DescDate: %d/%d/%d\n", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900); unicode_to_ascii(string, sizeof(string), edge_serial->manuf_descriptor.SerialNumber, edge_serial->manuf_descriptor.SerNumLength/2); dev_dbg(dev, " SerialNumber: %s\n", string); unicode_to_ascii(string, sizeof(string), edge_serial->manuf_descriptor.AssemblyNumber, edge_serial->manuf_descriptor.AssemblyNumLength/2); dev_dbg(dev, " AssemblyNumber: %s\n", string); unicode_to_ascii(string, sizeof(string), edge_serial->manuf_descriptor.OemAssyNumber, edge_serial->manuf_descriptor.OemAssyNumLength/2); dev_dbg(dev, " OemAssyNumber: %s\n", string); dev_dbg(dev, " UartType: %d\n", edge_serial->manuf_descriptor.UartType); dev_dbg(dev, " IonPid: %d\n", edge_serial->manuf_descriptor.IonPid); dev_dbg(dev, " IonConfig: %d\n", edge_serial->manuf_descriptor.IonConfig); } } /**************************************************************************** * get_boot_desc * reads in the bootloader descriptor and stores it into the serial * structure. ****************************************************************************/ static void get_boot_desc(struct edgeport_serial *edge_serial) { struct device *dev = &edge_serial->serial->dev->dev; int response; dev_dbg(dev, "getting boot descriptor\n"); response = rom_read(edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN, (__u8 *)(&edge_serial->boot_descriptor)); if (response < 0) { dev_err(dev, "error in getting boot descriptor: %d\n", response); } else { dev_dbg(dev, "**Boot Descriptor:\n"); dev_dbg(dev, " BootCodeLength: %d\n", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); dev_dbg(dev, " MajorVersion: %d\n", edge_serial->boot_descriptor.MajorVersion); dev_dbg(dev, " MinorVersion: %d\n", edge_serial->boot_descriptor.MinorVersion); dev_dbg(dev, " BuildNumber: %d\n", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); dev_dbg(dev, " Capabilities: 0x%x\n", le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); dev_dbg(dev, " UConfig0: %d\n", edge_serial->boot_descriptor.UConfig0); dev_dbg(dev, " UConfig1: %d\n", edge_serial->boot_descriptor.UConfig1); } } /**************************************************************************** * load_application_firmware * This is called to load the application firmware to the device ****************************************************************************/ static void load_application_firmware(struct edgeport_serial *edge_serial) { struct device *dev = &edge_serial->serial->dev->dev; const struct ihex_binrec *rec; const struct firmware *fw; const char *fw_name; const char *fw_info; int response; __u32 Operaddr; __u16 build; switch (edge_serial->product_info.iDownloadFile) { case EDGE_DOWNLOAD_FILE_I930: fw_info = "downloading firmware version (930)"; fw_name = "edgeport/down.fw"; break; case EDGE_DOWNLOAD_FILE_80251: fw_info = "downloading firmware version (80251)"; fw_name = "edgeport/down2.fw"; break; case EDGE_DOWNLOAD_FILE_NONE: dev_dbg(dev, "No download file specified, skipping download\n"); return; default: return; } response = request_ihex_firmware(&fw, fw_name, &edge_serial->serial->dev->dev); if (response) { dev_err(dev, "Failed to load image \"%s\" err %d\n", fw_name, response); return; } rec = (const struct ihex_binrec *)fw->data; build = (rec->data[2] << 8) | rec->data[3]; dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); for (rec = ihex_next_binrec(rec); rec; rec = ihex_next_binrec(rec)) { Operaddr = be32_to_cpu(rec->addr); response = sram_write(edge_serial->serial, Operaddr >> 16, Operaddr & 0xFFFF, be16_to_cpu(rec->len), &rec->data[0]); if (response < 0) { dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", Operaddr >> 16, Operaddr & 0xFFFF, be16_to_cpu(rec->len)); break; } } dev_dbg(dev, "sending exec_dl_code\n"); response = usb_control_msg (edge_serial->serial->dev, usb_sndctrlpipe(edge_serial->serial->dev, 0), USB_REQUEST_ION_EXEC_DL_CODE, 0x40, 0x4000, 0x0001, NULL, 0, 3000); release_firmware(fw); } /**************************************************************************** * edge_startup ****************************************************************************/ static int edge_startup(struct usb_serial *serial) { struct edgeport_serial *edge_serial; struct usb_device *dev; struct device *ddev = &serial->dev->dev; int i; int response; bool interrupt_in_found; bool bulk_in_found; bool bulk_out_found; static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, EDGE_COMPATIBILITY_MASK1, EDGE_COMPATIBILITY_MASK2 }; dev = serial->dev; /* create our private serial structure */ edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); if (!edge_serial) return -ENOMEM; spin_lock_init(&edge_serial->es_lock); edge_serial->serial = serial; usb_set_serial_data(serial, edge_serial); /* get the name for the device from the device */ i = usb_string(dev, dev->descriptor.iManufacturer, &edge_serial->name[0], MAX_NAME_LEN+1); if (i < 0) i = 0; edge_serial->name[i++] = ' '; usb_string(dev, dev->descriptor.iProduct, &edge_serial->name[i], MAX_NAME_LEN+2 - i); dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); /* Read the epic descriptor */ if (get_epic_descriptor(edge_serial) < 0) { /* memcpy descriptor to Supports structures */ memcpy(&edge_serial->epic_descriptor.Supports, descriptor, sizeof(struct edge_compatibility_bits)); /* get the manufacturing descriptor for this device */ get_manufacturing_desc(edge_serial); /* get the boot descriptor */ get_boot_desc(edge_serial); get_product_info(edge_serial); } /* set the number of ports from the manufacturing description */ /* serial->num_ports = serial->product_info.NumPorts; */ if ((!edge_serial->is_epic) && (edge_serial->product_info.NumPorts != serial->num_ports)) { dev_warn(ddev, "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", edge_serial->product_info.NumPorts, serial->num_ports); } dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); /* If not an EPiC device */ if (!edge_serial->is_epic) { /* now load the application firmware into this device */ load_application_firmware(edge_serial); dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); /* Check current Edgeport EEPROM and update if necessary */ update_edgeport_E2PROM(edge_serial); dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); /* set the configuration to use #1 */ /* dev_dbg(ddev, "set_configuration 1\n"); */ /* usb_set_configuration (dev, 1); */ } dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", edge_serial->product_info.FirmwareMajorVersion, edge_serial->product_info.FirmwareMinorVersion, le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); /* we set up the pointers to the endpoints in the edge_open function, * as the structures aren't created yet. */ response = 0; if (edge_serial->is_epic) { /* EPIC thing, set up our interrupt polling now and our read * urb, so that the device knows it really is connected. */ interrupt_in_found = bulk_in_found = bulk_out_found = false; for (i = 0; i < serial->interface->altsetting[0] .desc.bNumEndpoints; ++i) { struct usb_endpoint_descriptor *endpoint; int buffer_size; endpoint = &serial->interface->altsetting[0]. endpoint[i].desc; buffer_size = usb_endpoint_maxp(endpoint); if (!interrupt_in_found && (usb_endpoint_is_int_in(endpoint))) { /* we found a interrupt in endpoint */ dev_dbg(ddev, "found interrupt in\n"); /* not set up yet, so do it now */ edge_serial->interrupt_read_urb = usb_alloc_urb(0, GFP_KERNEL); if (!edge_serial->interrupt_read_urb) { response = -ENOMEM; break; } edge_serial->interrupt_in_buffer = kmalloc(buffer_size, GFP_KERNEL); if (!edge_serial->interrupt_in_buffer) { response = -ENOMEM; break; } edge_serial->interrupt_in_endpoint = endpoint->bEndpointAddress; /* set up our interrupt urb */ usb_fill_int_urb( edge_serial->interrupt_read_urb, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress), edge_serial->interrupt_in_buffer, buffer_size, edge_interrupt_callback, edge_serial, endpoint->bInterval); interrupt_in_found = true; } if (!bulk_in_found && (usb_endpoint_is_bulk_in(endpoint))) { /* we found a bulk in endpoint */ dev_dbg(ddev, "found bulk in\n"); /* not set up yet, so do it now */ edge_serial->read_urb = usb_alloc_urb(0, GFP_KERNEL); if (!edge_serial->read_urb) { response = -ENOMEM; break; } edge_serial->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); if (!edge_serial->bulk_in_buffer) { response = -ENOMEM; break; } edge_serial->bulk_in_endpoint = endpoint->bEndpointAddress; /* set up our bulk in urb */ usb_fill_bulk_urb(edge_serial->read_urb, dev, usb_rcvbulkpipe(dev, endpoint->bEndpointAddress), edge_serial->bulk_in_buffer, usb_endpoint_maxp(endpoint), edge_bulk_in_callback, edge_serial); bulk_in_found = true; } if (!bulk_out_found && (usb_endpoint_is_bulk_out(endpoint))) { /* we found a bulk out endpoint */ dev_dbg(ddev, "found bulk out\n"); edge_serial->bulk_out_endpoint = endpoint->bEndpointAddress; bulk_out_found = true; } } if (response || !interrupt_in_found || !bulk_in_found || !bulk_out_found) { if (!response) { dev_err(ddev, "expected endpoints not found\n"); response = -ENODEV; } usb_free_urb(edge_serial->interrupt_read_urb); kfree(edge_serial->interrupt_in_buffer); usb_free_urb(edge_serial->read_urb); kfree(edge_serial->bulk_in_buffer); kfree(edge_serial); return response; } /* start interrupt read for this edgeport this interrupt will * continue as long as the edgeport is connected */ response = usb_submit_urb(edge_serial->interrupt_read_urb, GFP_KERNEL); if (response) dev_err(ddev, "%s - Error %d submitting control urb\n", __func__, response); } return response; } /**************************************************************************** * edge_disconnect * This function is called whenever the device is removed from the usb bus. ****************************************************************************/ static void edge_disconnect(struct usb_serial *serial) { struct edgeport_serial *edge_serial = usb_get_serial_data(serial); if (edge_serial->is_epic) { usb_kill_urb(edge_serial->interrupt_read_urb); usb_kill_urb(edge_serial->read_urb); } } /**************************************************************************** * edge_release * This function is called when the device structure is deallocated. ****************************************************************************/ static void edge_release(struct usb_serial *serial) { struct edgeport_serial *edge_serial = usb_get_serial_data(serial); if (edge_serial->is_epic) { usb_kill_urb(edge_serial->interrupt_read_urb); usb_free_urb(edge_serial->interrupt_read_urb); kfree(edge_serial->interrupt_in_buffer); usb_kill_urb(edge_serial->read_urb); usb_free_urb(edge_serial->read_urb); kfree(edge_serial->bulk_in_buffer); } kfree(edge_serial); } static int edge_port_probe(struct usb_serial_port *port) { struct edgeport_port *edge_port; edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); if (!edge_port) return -ENOMEM; spin_lock_init(&edge_port->ep_lock); edge_port->port = port; usb_set_serial_port_data(port, edge_port); return 0; } static int edge_port_remove(struct usb_serial_port *port) { struct edgeport_port *edge_port; edge_port = usb_get_serial_port_data(port); kfree(edge_port); return 0; } static struct usb_serial_driver edgeport_2port_device = { .driver = { .owner = THIS_MODULE, .name = "edgeport_2", }, .description = "Edgeport 2 port adapter", .id_table = edgeport_2port_id_table, .num_ports = 2, .num_bulk_in = 1, .num_bulk_out = 1, .num_interrupt_in = 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_port_probe, .port_remove = edge_port_remove, .ioctl = edge_ioctl, .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, .get_serial = get_serial_info, .tiocmiwait = usb_serial_generic_tiocmiwait, .get_icount = usb_serial_generic_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, .break_ctl = edge_break, .read_int_callback = edge_interrupt_callback, .read_bulk_callback = edge_bulk_in_callback, .write_bulk_callback = edge_bulk_out_data_callback, }; static struct usb_serial_driver edgeport_4port_device = { .driver = { .owner = THIS_MODULE, .name = "edgeport_4", }, .description = "Edgeport 4 port adapter", .id_table = edgeport_4port_id_table, .num_ports = 4, .num_bulk_in = 1, .num_bulk_out = 1, .num_interrupt_in = 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_port_probe, .port_remove = edge_port_remove, .ioctl = edge_ioctl, .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, .get_serial = get_serial_info, .tiocmiwait = usb_serial_generic_tiocmiwait, .get_icount = usb_serial_generic_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, .break_ctl = edge_break, .read_int_callback = edge_interrupt_callback, .read_bulk_callback = edge_bulk_in_callback, .write_bulk_callback = edge_bulk_out_data_callback, }; static struct usb_serial_driver edgeport_8port_device = { .driver = { .owner = THIS_MODULE, .name = "edgeport_8", }, .description = "Edgeport 8 port adapter", .id_table = edgeport_8port_id_table, .num_ports = 8, .num_bulk_in = 1, .num_bulk_out = 1, .num_interrupt_in = 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_port_probe, .port_remove = edge_port_remove, .ioctl = edge_ioctl, .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, .get_serial = get_serial_info, .tiocmiwait = usb_serial_generic_tiocmiwait, .get_icount = usb_serial_generic_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, .break_ctl = edge_break, .read_int_callback = edge_interrupt_callback, .read_bulk_callback = edge_bulk_in_callback, .write_bulk_callback = edge_bulk_out_data_callback, }; static struct usb_serial_driver epic_device = { .driver = { .owner = THIS_MODULE, .name = "epic", }, .description = "EPiC device", .id_table = Epic_port_id_table, .num_ports = 1, .num_bulk_in = 1, .num_bulk_out = 1, .num_interrupt_in = 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_port_probe, .port_remove = edge_port_remove, .ioctl = edge_ioctl, .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, .get_serial = get_serial_info, .tiocmiwait = usb_serial_generic_tiocmiwait, .get_icount = usb_serial_generic_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, .break_ctl = edge_break, .read_int_callback = edge_interrupt_callback, .read_bulk_callback = edge_bulk_in_callback, .write_bulk_callback = edge_bulk_out_data_callback, }; static struct usb_serial_driver * const serial_drivers[] = { &edgeport_2port_device, &edgeport_4port_device, &edgeport_8port_device, &epic_device, NULL }; module_usb_serial_driver(serial_drivers, id_table_combined); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); MODULE_FIRMWARE("edgeport/boot.fw"); MODULE_FIRMWARE("edgeport/boot2.fw"); MODULE_FIRMWARE("edgeport/down.fw"); MODULE_FIRMWARE("edgeport/down2.fw");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1