| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Tony Olech | 15571 | 98.00% | 3 | 7.89% |
| Joe Perches | 84 | 0.53% | 6 | 15.79% |
| Matthias Kaehlcke | 71 | 0.45% | 2 | 5.26% |
| David Howells | 51 | 0.32% | 1 | 2.63% |
| Johan Hovold | 32 | 0.20% | 1 | 2.63% |
| Greg Kroah-Hartman | 18 | 0.11% | 6 | 15.79% |
| Xiao Han | 10 | 0.06% | 1 | 2.63% |
| Daniel Mack | 9 | 0.06% | 1 | 2.63% |
| Bhaktipriya Shridhar | 9 | 0.06% | 1 | 2.63% |
| Linus Torvalds | 6 | 0.04% | 2 | 5.26% |
| Mariusz Kozlowski | 6 | 0.04% | 1 | 2.63% |
| Wei Yongjun | 5 | 0.03% | 1 | 2.63% |
| Thomas Gleixner | 3 | 0.02% | 1 | 2.63% |
| Oliver Neukum | 2 | 0.01% | 1 | 2.63% |
| Cyrill V. Gorcunov | 2 | 0.01% | 1 | 2.63% |
| Saurabh Karajgaonkar | 2 | 0.01% | 1 | 2.63% |
| Rusty Russell | 1 | 0.01% | 1 | 2.63% |
| Arjan van de Ven | 1 | 0.01% | 1 | 2.63% |
| Gustavo A. R. Silva | 1 | 0.01% | 1 | 2.63% |
| Eric Lescouet | 1 | 0.01% | 1 | 2.63% |
| Márton Németh | 1 | 0.01% | 1 | 2.63% |
| Adrian Bunk | 1 | 0.01% | 1 | 2.63% |
| Al Viro | 1 | 0.01% | 1 | 2.63% |
| Michal Marek | 1 | 0.01% | 1 | 2.63% |
| Total | 15889 | 38 |
// SPDX-License-Identifier: GPL-2.0 /* * USB FTDI client driver for Elan Digital Systems's Uxxx adapters * * Copyright(C) 2006 Elan Digital Systems Limited * http://www.elandigitalsystems.com * * Author and Maintainer - Tony Olech - Elan Digital Systems * tony.olech@elandigitalsystems.com * * This driver was written by Tony Olech(tony.olech@elandigitalsystems.com) * based on various USB client drivers in the 2.6.15 linux kernel * with constant reference to the 3rd Edition of Linux Device Drivers * published by O'Reilly * * The U132 adapter is a USB to CardBus adapter specifically designed * for PC cards that contain an OHCI host controller. Typical PC cards * are the Orange Mobile 3G Option GlobeTrotter Fusion card. * * The U132 adapter will *NOT *work with PC cards that do not contain * an OHCI controller. A simple way to test whether a PC card has an * OHCI controller as an interface is to insert the PC card directly * into a laptop(or desktop) with a CardBus slot and if "lspci" shows * a new USB controller and "lsusb -v" shows a new OHCI Host Controller * then there is a good chance that the U132 adapter will support the * PC card.(you also need the specific client driver for the PC card) * * Please inform the Author and Maintainer about any PC cards that * contain OHCI Host Controller and work when directly connected to * an embedded CardBus slot but do not work when they are connected * via an ELAN U132 adapter. * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/kernel.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/list.h> #include <linux/ioctl.h> #include <linux/pci_ids.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/kref.h> #include <linux/mutex.h> #include <linux/uaccess.h> #include <linux/usb.h> #include <linux/workqueue.h> #include <linux/platform_device.h> MODULE_AUTHOR("Tony Olech"); MODULE_DESCRIPTION("FTDI ELAN driver"); MODULE_LICENSE("GPL"); #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444) static bool distrust_firmware = 1; module_param(distrust_firmware, bool, 0); MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurrent setup"); extern struct platform_driver u132_platform_driver; /* * ftdi_module_lock exists to protect access to global variables * */ static struct mutex ftdi_module_lock; static int ftdi_instances = 0; static struct list_head ftdi_static_list; /* * end of the global variables protected by ftdi_module_lock */ #include "usb_u132.h" #include <asm/io.h> #include <linux/usb/hcd.h> /* FIXME ohci.h is ONLY for internal use by the OHCI driver. * If you're going to try stuff like this, you need to split * out shareable stuff (register declarations?) into its own * file, maybe name <linux/usb/ohci.h> */ #include "../host/ohci.h" /* Define these values to match your devices*/ #define USB_FTDI_ELAN_VENDOR_ID 0x0403 #define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea /* table of devices that work with this driver*/ static const struct usb_device_id ftdi_elan_table[] = { {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)}, { /* Terminating entry */ } }; MODULE_DEVICE_TABLE(usb, ftdi_elan_table); /* only the jtag(firmware upgrade device) interface requires * a device file and corresponding minor number, but the * interface is created unconditionally - I suppose it could * be configured or not according to a module parameter. * But since we(now) require one interface per device, * and since it unlikely that a normal installation would * require more than a couple of elan-ftdi devices, 8 seems * like a reasonable limit to have here, and if someone * really requires more than 8 devices, then they can frig the * code and recompile */ #define USB_FTDI_ELAN_MINOR_BASE 192 #define COMMAND_BITS 5 #define COMMAND_SIZE (1<<COMMAND_BITS) #define COMMAND_MASK (COMMAND_SIZE-1) struct u132_command { u8 header; u16 length; u8 address; u8 width; u32 value; int follows; void *buffer; }; #define RESPOND_BITS 5 #define RESPOND_SIZE (1<<RESPOND_BITS) #define RESPOND_MASK (RESPOND_SIZE-1) struct u132_respond { u8 header; u8 address; u32 *value; int *result; struct completion wait_completion; }; struct u132_target { void *endp; struct urb *urb; int toggle_bits; int error_count; int condition_code; int repeat_number; int halted; int skipped; int actual; int non_null; int active; int abandoning; void (*callback)(void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null); }; /* Structure to hold all of our device specific stuff*/ struct usb_ftdi { struct list_head ftdi_list; struct mutex u132_lock; int command_next; int command_head; struct u132_command command[COMMAND_SIZE]; int respond_next; int respond_head; struct u132_respond respond[RESPOND_SIZE]; struct u132_target target[4]; char device_name[16]; unsigned synchronized:1; unsigned enumerated:1; unsigned registered:1; unsigned initialized:1; unsigned card_ejected:1; int function; int sequence_num; int disconnected; int gone_away; int stuck_status; int status_queue_delay; struct semaphore sw_lock; struct usb_device *udev; struct usb_interface *interface; struct usb_class_driver *class; struct delayed_work status_work; struct delayed_work command_work; struct delayed_work respond_work; struct u132_platform_data platform_data; struct resource resources[0]; struct platform_device platform_dev; unsigned char *bulk_in_buffer; size_t bulk_in_size; size_t bulk_in_last; size_t bulk_in_left; __u8 bulk_in_endpointAddr; __u8 bulk_out_endpointAddr; struct kref kref; u32 controlreg; u8 response[4 + 1024]; int expected; int received; int ed_found; }; #define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref) #define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \ platform_dev) static struct usb_driver ftdi_elan_driver; static void ftdi_elan_delete(struct kref *kref) { struct usb_ftdi *ftdi = kref_to_usb_ftdi(kref); dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi); usb_put_dev(ftdi->udev); ftdi->disconnected += 1; mutex_lock(&ftdi_module_lock); list_del_init(&ftdi->ftdi_list); ftdi_instances -= 1; mutex_unlock(&ftdi_module_lock); kfree(ftdi->bulk_in_buffer); ftdi->bulk_in_buffer = NULL; kfree(ftdi); } static void ftdi_elan_put_kref(struct usb_ftdi *ftdi) { kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_elan_get_kref(struct usb_ftdi *ftdi) { kref_get(&ftdi->kref); } static void ftdi_elan_init_kref(struct usb_ftdi *ftdi) { kref_init(&ftdi->kref); } static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) { if (!schedule_delayed_work(&ftdi->status_work, delta)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta) { if (schedule_delayed_work(&ftdi->status_work, delta)) kref_get(&ftdi->kref); } static void ftdi_status_cancel_work(struct usb_ftdi *ftdi) { if (cancel_delayed_work_sync(&ftdi->status_work)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) { if (!schedule_delayed_work(&ftdi->command_work, delta)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta) { if (schedule_delayed_work(&ftdi->command_work, delta)) kref_get(&ftdi->kref); } static void ftdi_command_cancel_work(struct usb_ftdi *ftdi) { if (cancel_delayed_work_sync(&ftdi->command_work)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_response_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) { if (!schedule_delayed_work(&ftdi->respond_work, delta)) kref_put(&ftdi->kref, ftdi_elan_delete); } static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta) { if (schedule_delayed_work(&ftdi->respond_work, delta)) kref_get(&ftdi->kref); } static void ftdi_response_cancel_work(struct usb_ftdi *ftdi) { if (cancel_delayed_work_sync(&ftdi->respond_work)) kref_put(&ftdi->kref, ftdi_elan_delete); } void ftdi_elan_gone_away(struct platform_device *pdev) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); ftdi->gone_away += 1; ftdi_elan_put_kref(ftdi); } EXPORT_SYMBOL_GPL(ftdi_elan_gone_away); static void ftdi_release_platform_dev(struct device *dev) { dev->parent = NULL; } static void ftdi_elan_do_callback(struct usb_ftdi *ftdi, struct u132_target *target, u8 *buffer, int length); static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi); static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi); static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi); static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi); static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi); static int ftdi_elan_synchronize(struct usb_ftdi *ftdi); static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi); static int ftdi_elan_command_engine(struct usb_ftdi *ftdi); static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi); static int ftdi_elan_hcd_init(struct usb_ftdi *ftdi) { if (ftdi->platform_dev.dev.parent) return -EBUSY; ftdi_elan_get_kref(ftdi); ftdi->platform_data.potpg = 100; ftdi->platform_data.reset = NULL; ftdi->platform_dev.id = ftdi->sequence_num; ftdi->platform_dev.resource = ftdi->resources; ftdi->platform_dev.num_resources = ARRAY_SIZE(ftdi->resources); ftdi->platform_dev.dev.platform_data = &ftdi->platform_data; ftdi->platform_dev.dev.parent = NULL; ftdi->platform_dev.dev.release = ftdi_release_platform_dev; ftdi->platform_dev.dev.dma_mask = NULL; snprintf(ftdi->device_name, sizeof(ftdi->device_name), "u132_hcd"); ftdi->platform_dev.name = ftdi->device_name; dev_info(&ftdi->udev->dev, "requesting module '%s'\n", "u132_hcd"); request_module("u132_hcd"); dev_info(&ftdi->udev->dev, "registering '%s'\n", ftdi->platform_dev.name); return platform_device_register(&ftdi->platform_dev); } static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi) { mutex_lock(&ftdi->u132_lock); while (ftdi->respond_next > ftdi->respond_head) { struct u132_respond *respond = &ftdi->respond[RESPOND_MASK & ftdi->respond_head++]; *respond->result = -ESHUTDOWN; *respond->value = 0; complete(&respond->wait_completion); } mutex_unlock(&ftdi->u132_lock); } static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi) { int ed_number = 4; mutex_lock(&ftdi->u132_lock); while (ed_number-- > 0) { struct u132_target *target = &ftdi->target[ed_number]; if (target->active == 1) { target->condition_code = TD_DEVNOTRESP; mutex_unlock(&ftdi->u132_lock); ftdi_elan_do_callback(ftdi, target, NULL, 0); mutex_lock(&ftdi->u132_lock); } } ftdi->received = 0; ftdi->expected = 4; ftdi->ed_found = 0; mutex_unlock(&ftdi->u132_lock); } static void ftdi_elan_flush_targets(struct usb_ftdi *ftdi) { int ed_number = 4; mutex_lock(&ftdi->u132_lock); while (ed_number-- > 0) { struct u132_target *target = &ftdi->target[ed_number]; target->abandoning = 1; wait_1:if (target->active == 1) { int command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x80 | (ed_number << 5) | 0x4; command->length = 0x00; command->address = 0x00; command->width = 0x00; command->follows = 0; command->value = 0; command->buffer = &command->value; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); } else { mutex_unlock(&ftdi->u132_lock); msleep(100); mutex_lock(&ftdi->u132_lock); goto wait_1; } } wait_2:if (target->active == 1) { int command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x90 | (ed_number << 5); command->length = 0x00; command->address = 0x00; command->width = 0x00; command->follows = 0; command->value = 0; command->buffer = &command->value; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); } else { mutex_unlock(&ftdi->u132_lock); msleep(100); mutex_lock(&ftdi->u132_lock); goto wait_2; } } } ftdi->received = 0; ftdi->expected = 4; ftdi->ed_found = 0; mutex_unlock(&ftdi->u132_lock); } static void ftdi_elan_cancel_targets(struct usb_ftdi *ftdi) { int ed_number = 4; mutex_lock(&ftdi->u132_lock); while (ed_number-- > 0) { struct u132_target *target = &ftdi->target[ed_number]; target->abandoning = 1; wait:if (target->active == 1) { int command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x80 | (ed_number << 5) | 0x4; command->length = 0x00; command->address = 0x00; command->width = 0x00; command->follows = 0; command->value = 0; command->buffer = &command->value; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); } else { mutex_unlock(&ftdi->u132_lock); msleep(100); mutex_lock(&ftdi->u132_lock); goto wait; } } } ftdi->received = 0; ftdi->expected = 4; ftdi->ed_found = 0; mutex_unlock(&ftdi->u132_lock); } static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi) { ftdi_command_queue_work(ftdi, 0); } static void ftdi_elan_command_work(struct work_struct *work) { struct usb_ftdi *ftdi = container_of(work, struct usb_ftdi, command_work.work); if (ftdi->disconnected > 0) { ftdi_elan_put_kref(ftdi); return; } else { int retval = ftdi_elan_command_engine(ftdi); if (retval == -ESHUTDOWN) { ftdi->disconnected += 1; } else if (retval == -ENODEV) { ftdi->disconnected += 1; } else if (retval) dev_err(&ftdi->udev->dev, "command error %d\n", retval); ftdi_command_requeue_work(ftdi, msecs_to_jiffies(10)); return; } } static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi) { ftdi_respond_queue_work(ftdi, 0); } static void ftdi_elan_respond_work(struct work_struct *work) { struct usb_ftdi *ftdi = container_of(work, struct usb_ftdi, respond_work.work); if (ftdi->disconnected > 0) { ftdi_elan_put_kref(ftdi); return; } else { int retval = ftdi_elan_respond_engine(ftdi); if (retval == 0) { } else if (retval == -ESHUTDOWN) { ftdi->disconnected += 1; } else if (retval == -ENODEV) { ftdi->disconnected += 1; } else if (retval == -EILSEQ) { ftdi->disconnected += 1; } else { ftdi->disconnected += 1; dev_err(&ftdi->udev->dev, "respond error %d\n", retval); } if (ftdi->disconnected > 0) { ftdi_elan_abandon_completions(ftdi); ftdi_elan_abandon_targets(ftdi); } ftdi_response_requeue_work(ftdi, msecs_to_jiffies(10)); return; } } /* * the sw_lock is initially held and will be freed * after the FTDI has been synchronized * */ static void ftdi_elan_status_work(struct work_struct *work) { struct usb_ftdi *ftdi = container_of(work, struct usb_ftdi, status_work.work); int work_delay_in_msec = 0; if (ftdi->disconnected > 0) { ftdi_elan_put_kref(ftdi); return; } else if (ftdi->synchronized == 0) { down(&ftdi->sw_lock); if (ftdi_elan_synchronize(ftdi) == 0) { ftdi->synchronized = 1; ftdi_command_queue_work(ftdi, 1); ftdi_respond_queue_work(ftdi, 1); up(&ftdi->sw_lock); work_delay_in_msec = 100; } else { dev_err(&ftdi->udev->dev, "synchronize failed\n"); up(&ftdi->sw_lock); work_delay_in_msec = 10 *1000; } } else if (ftdi->stuck_status > 0) { if (ftdi_elan_stuck_waiting(ftdi) == 0) { ftdi->stuck_status = 0; ftdi->synchronized = 0; } else if ((ftdi->stuck_status++ % 60) == 1) { dev_err(&ftdi->udev->dev, "WRONG type of card inserted - please remove\n"); } else dev_err(&ftdi->udev->dev, "WRONG type of card inserted - checked %d times\n", ftdi->stuck_status); work_delay_in_msec = 100; } else if (ftdi->enumerated == 0) { if (ftdi_elan_enumeratePCI(ftdi) == 0) { ftdi->enumerated = 1; work_delay_in_msec = 250; } else work_delay_in_msec = 1000; } else if (ftdi->initialized == 0) { if (ftdi_elan_setupOHCI(ftdi) == 0) { ftdi->initialized = 1; work_delay_in_msec = 500; } else { dev_err(&ftdi->udev->dev, "initialized failed - trying again in 10 seconds\n"); work_delay_in_msec = 1 *1000; } } else if (ftdi->registered == 0) { work_delay_in_msec = 10; if (ftdi_elan_hcd_init(ftdi) == 0) { ftdi->registered = 1; } else dev_err(&ftdi->udev->dev, "register failed\n"); work_delay_in_msec = 250; } else { if (ftdi_elan_checkingPCI(ftdi) == 0) { work_delay_in_msec = 250; } else if (ftdi->controlreg & 0x00400000) { if (ftdi->gone_away > 0) { dev_err(&ftdi->udev->dev, "PCI device eject confirmed platform_dev.dev.parent=%p platform_dev.dev=%p\n", ftdi->platform_dev.dev.parent, &ftdi->platform_dev.dev); platform_device_unregister(&ftdi->platform_dev); ftdi->platform_dev.dev.parent = NULL; ftdi->registered = 0; ftdi->enumerated = 0; ftdi->card_ejected = 0; ftdi->initialized = 0; ftdi->gone_away = 0; } else ftdi_elan_flush_targets(ftdi); work_delay_in_msec = 250; } else { dev_err(&ftdi->udev->dev, "PCI device has disappeared\n"); ftdi_elan_cancel_targets(ftdi); work_delay_in_msec = 500; ftdi->enumerated = 0; ftdi->initialized = 0; } } if (ftdi->disconnected > 0) { ftdi_elan_put_kref(ftdi); return; } else { ftdi_status_requeue_work(ftdi, msecs_to_jiffies(work_delay_in_msec)); return; } } /* * file_operations for the jtag interface * * the usage count for the device is incremented on open() * and decremented on release() */ static int ftdi_elan_open(struct inode *inode, struct file *file) { int subminor; struct usb_interface *interface; subminor = iminor(inode); interface = usb_find_interface(&ftdi_elan_driver, subminor); if (!interface) { pr_err("can't find device for minor %d\n", subminor); return -ENODEV; } else { struct usb_ftdi *ftdi = usb_get_intfdata(interface); if (!ftdi) { return -ENODEV; } else { if (down_interruptible(&ftdi->sw_lock)) { return -EINTR; } else { ftdi_elan_get_kref(ftdi); file->private_data = ftdi; return 0; } } } } static int ftdi_elan_release(struct inode *inode, struct file *file) { struct usb_ftdi *ftdi = file->private_data; if (ftdi == NULL) return -ENODEV; up(&ftdi->sw_lock); /* decrement the count on our device */ ftdi_elan_put_kref(ftdi); return 0; } /* * * blocking bulk reads are used to get data from the device * */ static ssize_t ftdi_elan_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) { char data[30 *3 + 4]; char *d = data; int m = (sizeof(data) - 1) / 3 - 1; int bytes_read = 0; int retry_on_empty = 10; int retry_on_timeout = 5; struct usb_ftdi *ftdi = file->private_data; if (ftdi->disconnected > 0) { return -ENODEV; } data[0] = 0; have:if (ftdi->bulk_in_left > 0) { if (count-- > 0) { char *p = ++ftdi->bulk_in_last + ftdi->bulk_in_buffer; ftdi->bulk_in_left -= 1; if (bytes_read < m) { d += sprintf(d, " %02X", 0x000000FF & *p); } else if (bytes_read > m) { } else d += sprintf(d, " .."); if (copy_to_user(buffer++, p, 1)) { return -EFAULT; } else { bytes_read += 1; goto have; } } else return bytes_read; } more:if (count > 0) { int packet_bytes = 0; int retval = usb_bulk_msg(ftdi->udev, usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), ftdi->bulk_in_buffer, ftdi->bulk_in_size, &packet_bytes, 50); if (packet_bytes > 2) { ftdi->bulk_in_left = packet_bytes - 2; ftdi->bulk_in_last = 1; goto have; } else if (retval == -ETIMEDOUT) { if (retry_on_timeout-- > 0) { goto more; } else if (bytes_read > 0) { return bytes_read; } else return retval; } else if (retval == 0) { if (retry_on_empty-- > 0) { goto more; } else return bytes_read; } else return retval; } else return bytes_read; } static void ftdi_elan_write_bulk_callback(struct urb *urb) { struct usb_ftdi *ftdi = urb->context; int status = urb->status; if (status && !(status == -ENOENT || status == -ECONNRESET || status == -ESHUTDOWN)) { dev_err(&ftdi->udev->dev, "urb=%p write bulk status received: %d\n", urb, status); } usb_free_coherent(urb->dev, urb->transfer_buffer_length, urb->transfer_buffer, urb->transfer_dma); } static int fill_buffer_with_all_queued_commands(struct usb_ftdi *ftdi, char *buf, int command_size, int total_size) { int ed_commands = 0; int b = 0; int I = command_size; int i = ftdi->command_head; while (I-- > 0) { struct u132_command *command = &ftdi->command[COMMAND_MASK & i++]; int F = command->follows; u8 *f = command->buffer; if (command->header & 0x80) { ed_commands |= 1 << (0x3 & (command->header >> 5)); } buf[b++] = command->header; buf[b++] = (command->length >> 0) & 0x00FF; buf[b++] = (command->length >> 8) & 0x00FF; buf[b++] = command->address; buf[b++] = command->width; while (F-- > 0) { buf[b++] = *f++; } } return ed_commands; } static int ftdi_elan_total_command_size(struct usb_ftdi *ftdi, int command_size) { int total_size = 0; int I = command_size; int i = ftdi->command_head; while (I-- > 0) { struct u132_command *command = &ftdi->command[COMMAND_MASK & i++]; total_size += 5 + command->follows; } return total_size; } static int ftdi_elan_command_engine(struct usb_ftdi *ftdi) { int retval; char *buf; int ed_commands; int total_size; struct urb *urb; int command_size = ftdi->command_next - ftdi->command_head; if (command_size == 0) return 0; total_size = ftdi_elan_total_command_size(ftdi, command_size); urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) return -ENOMEM; buf = usb_alloc_coherent(ftdi->udev, total_size, GFP_KERNEL, &urb->transfer_dma); if (!buf) { dev_err(&ftdi->udev->dev, "could not get a buffer to write %d commands totaling %d bytes to the Uxxx\n", command_size, total_size); usb_free_urb(urb); return -ENOMEM; } ed_commands = fill_buffer_with_all_queued_commands(ftdi, buf, command_size, total_size); usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, ftdi->bulk_out_endpointAddr), buf, total_size, ftdi_elan_write_bulk_callback, ftdi); urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; if (ed_commands) { char diag[40 *3 + 4]; char *d = diag; int m = total_size; u8 *c = buf; int s = (sizeof(diag) - 1) / 3; diag[0] = 0; while (s-- > 0 && m-- > 0) { if (s > 0 || m == 0) { d += sprintf(d, " %02X", *c++); } else d += sprintf(d, " .."); } } retval = usb_submit_urb(urb, GFP_KERNEL); if (retval) { dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write %d commands totaling %d bytes to the Uxxx\n", retval, urb, command_size, total_size); usb_free_coherent(ftdi->udev, total_size, buf, urb->transfer_dma); usb_free_urb(urb); return retval; } usb_free_urb(urb); /* release our reference to this urb, the USB core will eventually free it entirely */ ftdi->command_head += command_size; ftdi_elan_kick_respond_queue(ftdi); return 0; } static void ftdi_elan_do_callback(struct usb_ftdi *ftdi, struct u132_target *target, u8 *buffer, int length) { struct urb *urb = target->urb; int halted = target->halted; int skipped = target->skipped; int actual = target->actual; int non_null = target->non_null; int toggle_bits = target->toggle_bits; int error_count = target->error_count; int condition_code = target->condition_code; int repeat_number = target->repeat_number; void (*callback) (void *, struct urb *, u8 *, int, int, int, int, int, int, int, int, int) = target->callback; target->active -= 1; target->callback = NULL; (*callback) (target->endp, urb, buffer, length, toggle_bits, error_count, condition_code, repeat_number, halted, skipped, actual, non_null); } static char *have_ed_set_response(struct usb_ftdi *ftdi, struct u132_target *target, u16 ed_length, int ed_number, int ed_type, char *b) { int payload = (ed_length >> 0) & 0x07FF; mutex_lock(&ftdi->u132_lock); target->actual = 0; target->non_null = (ed_length >> 15) & 0x0001; target->repeat_number = (ed_length >> 11) & 0x000F; if (ed_type == 0x02 || ed_type == 0x03) { if (payload == 0 || target->abandoning > 0) { target->abandoning = 0; mutex_unlock(&ftdi->u132_lock); ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, payload); ftdi->received = 0; ftdi->expected = 4; ftdi->ed_found = 0; return ftdi->response; } else { ftdi->expected = 4 + payload; ftdi->ed_found = 1; mutex_unlock(&ftdi->u132_lock); return b; } } else { target->abandoning = 0; mutex_unlock(&ftdi->u132_lock); ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, payload); ftdi->received = 0; ftdi->expected = 4; ftdi->ed_found = 0; return ftdi->response; } } static char *have_ed_get_response(struct usb_ftdi *ftdi, struct u132_target *target, u16 ed_length, int ed_number, int ed_type, char *b) { mutex_lock(&ftdi->u132_lock); target->condition_code = TD_DEVNOTRESP; target->actual = (ed_length >> 0) & 0x01FF; target->non_null = (ed_length >> 15) & 0x0001; target->repeat_number = (ed_length >> 11) & 0x000F; mutex_unlock(&ftdi->u132_lock); if (target->active) ftdi_elan_do_callback(ftdi, target, NULL, 0); target->abandoning = 0; ftdi->received = 0; ftdi->expected = 4; ftdi->ed_found = 0; return ftdi->response; } /* * The engine tries to empty the FTDI fifo * * all responses found in the fifo data are dispatched thus * the response buffer can only ever hold a maximum sized * response from the Uxxx. * */ static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi) { u8 *b = ftdi->response + ftdi->received; int bytes_read = 0; int retry_on_empty = 1; int retry_on_timeout = 3; read:{ int packet_bytes = 0; int retval = usb_bulk_msg(ftdi->udev, usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), ftdi->bulk_in_buffer, ftdi->bulk_in_size, &packet_bytes, 500); char diag[30 *3 + 4]; char *d = diag; int m = packet_bytes; u8 *c = ftdi->bulk_in_buffer; int s = (sizeof(diag) - 1) / 3; diag[0] = 0; while (s-- > 0 && m-- > 0) { if (s > 0 || m == 0) { d += sprintf(d, " %02X", *c++); } else d += sprintf(d, " .."); } if (packet_bytes > 2) { ftdi->bulk_in_left = packet_bytes - 2; ftdi->bulk_in_last = 1; goto have; } else if (retval == -ETIMEDOUT) { if (retry_on_timeout-- > 0) { dev_err(&ftdi->udev->dev, "TIMED OUT with packet_bytes = %d with total %d bytes%s\n", packet_bytes, bytes_read, diag); goto more; } else if (bytes_read > 0) { dev_err(&ftdi->udev->dev, "ONLY %d bytes%s\n", bytes_read, diag); return -ENOMEM; } else { dev_err(&ftdi->udev->dev, "TIMED OUT with packet_bytes = %d with total %d bytes%s\n", packet_bytes, bytes_read, diag); return -ENOMEM; } } else if (retval == -EILSEQ) { dev_err(&ftdi->udev->dev, "error = %d with packet_bytes = %d with total %d bytes%s\n", retval, packet_bytes, bytes_read, diag); return retval; } else if (retval) { dev_err(&ftdi->udev->dev, "error = %d with packet_bytes = %d with total %d bytes%s\n", retval, packet_bytes, bytes_read, diag); return retval; } else { if (retry_on_empty-- > 0) { goto more; } else return 0; } } more:{ goto read; } have:if (ftdi->bulk_in_left > 0) { u8 c = ftdi->bulk_in_buffer[++ftdi->bulk_in_last]; bytes_read += 1; ftdi->bulk_in_left -= 1; if (ftdi->received == 0 && c == 0xFF) { goto have; } else *b++ = c; if (++ftdi->received < ftdi->expected) { goto have; } else if (ftdi->ed_found) { int ed_number = (ftdi->response[0] >> 5) & 0x03; u16 ed_length = (ftdi->response[2] << 8) | ftdi->response[1]; struct u132_target *target = &ftdi->target[ed_number]; int payload = (ed_length >> 0) & 0x07FF; char diag[30 *3 + 4]; char *d = diag; int m = payload; u8 *c = 4 + ftdi->response; int s = (sizeof(diag) - 1) / 3; diag[0] = 0; while (s-- > 0 && m-- > 0) { if (s > 0 || m == 0) { d += sprintf(d, " %02X", *c++); } else d += sprintf(d, " .."); } ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, payload); ftdi->received = 0; ftdi->expected = 4; ftdi->ed_found = 0; b = ftdi->response; goto have; } else if (ftdi->expected == 8) { u8 buscmd; int respond_head = ftdi->respond_head++; struct u132_respond *respond = &ftdi->respond[ RESPOND_MASK & respond_head]; u32 data = ftdi->response[7]; data <<= 8; data |= ftdi->response[6]; data <<= 8; data |= ftdi->response[5]; data <<= 8; data |= ftdi->response[4]; *respond->value = data; *respond->result = 0; complete(&respond->wait_completion); ftdi->received = 0; ftdi->expected = 4; ftdi->ed_found = 0; b = ftdi->response; buscmd = (ftdi->response[0] >> 0) & 0x0F; if (buscmd == 0x00) { } else if (buscmd == 0x02) { } else if (buscmd == 0x06) { } else if (buscmd == 0x0A) { } else dev_err(&ftdi->udev->dev, "Uxxx unknown(%0X) value = %08X\n", buscmd, data); goto have; } else { if ((ftdi->response[0] & 0x80) == 0x00) { ftdi->expected = 8; goto have; } else { int ed_number = (ftdi->response[0] >> 5) & 0x03; int ed_type = (ftdi->response[0] >> 0) & 0x03; u16 ed_length = (ftdi->response[2] << 8) | ftdi->response[1]; struct u132_target *target = &ftdi->target[ ed_number]; target->halted = (ftdi->response[0] >> 3) & 0x01; target->skipped = (ftdi->response[0] >> 2) & 0x01; target->toggle_bits = (ftdi->response[3] >> 6) & 0x03; target->error_count = (ftdi->response[3] >> 4) & 0x03; target->condition_code = (ftdi->response[ 3] >> 0) & 0x0F; if ((ftdi->response[0] & 0x10) == 0x00) { b = have_ed_set_response(ftdi, target, ed_length, ed_number, ed_type, b); goto have; } else { b = have_ed_get_response(ftdi, target, ed_length, ed_number, ed_type, b); goto have; } } } } else goto more; } /* * create a urb, and a buffer for it, and copy the data to the urb * */ static ssize_t ftdi_elan_write(struct file *file, const char __user *user_buffer, size_t count, loff_t *ppos) { int retval = 0; struct urb *urb; char *buf; struct usb_ftdi *ftdi = file->private_data; if (ftdi->disconnected > 0) { return -ENODEV; } if (count == 0) { goto exit; } urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) { retval = -ENOMEM; goto error_1; } buf = usb_alloc_coherent(ftdi->udev, count, GFP_KERNEL, &urb->transfer_dma); if (!buf) { retval = -ENOMEM; goto error_2; } if (copy_from_user(buf, user_buffer, count)) { retval = -EFAULT; goto error_3; } usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, ftdi->bulk_out_endpointAddr), buf, count, ftdi_elan_write_bulk_callback, ftdi); urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; retval = usb_submit_urb(urb, GFP_KERNEL); if (retval) { dev_err(&ftdi->udev->dev, "failed submitting write urb, error %d\n", retval); goto error_3; } usb_free_urb(urb); exit: return count; error_3: usb_free_coherent(ftdi->udev, count, buf, urb->transfer_dma); error_2: usb_free_urb(urb); error_1: return retval; } static const struct file_operations ftdi_elan_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .read = ftdi_elan_read, .write = ftdi_elan_write, .open = ftdi_elan_open, .release = ftdi_elan_release, }; /* * usb class driver info in order to get a minor number from the usb core, * and to have the device registered with the driver core */ static struct usb_class_driver ftdi_elan_jtag_class = { .name = "ftdi-%d-jtag", .fops = &ftdi_elan_fops, .minor_base = USB_FTDI_ELAN_MINOR_BASE, }; /* * the following definitions are for the * ELAN FPGA state machgine processor that * lies on the other side of the FTDI chip */ #define cPCIu132rd 0x0 #define cPCIu132wr 0x1 #define cPCIiord 0x2 #define cPCIiowr 0x3 #define cPCImemrd 0x6 #define cPCImemwr 0x7 #define cPCIcfgrd 0xA #define cPCIcfgwr 0xB #define cPCInull 0xF #define cU132cmd_status 0x0 #define cU132flash 0x1 #define cPIDsetup 0x0 #define cPIDout 0x1 #define cPIDin 0x2 #define cPIDinonce 0x3 #define cCCnoerror 0x0 #define cCCcrc 0x1 #define cCCbitstuff 0x2 #define cCCtoggle 0x3 #define cCCstall 0x4 #define cCCnoresp 0x5 #define cCCbadpid1 0x6 #define cCCbadpid2 0x7 #define cCCdataoverrun 0x8 #define cCCdataunderrun 0x9 #define cCCbuffoverrun 0xC #define cCCbuffunderrun 0xD #define cCCnotaccessed 0xF static int ftdi_elan_write_reg(struct usb_ftdi *ftdi, u32 data) { wait:if (ftdi->disconnected > 0) { return -ENODEV; } else { int command_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x00 | cPCIu132wr; command->length = 0x04; command->address = 0x00; command->width = 0x00; command->follows = 4; command->value = data; command->buffer = &command->value; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); return 0; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } static int ftdi_elan_write_config(struct usb_ftdi *ftdi, int config_offset, u8 width, u32 data) { u8 addressofs = config_offset / 4; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else { int command_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x00 | (cPCIcfgwr & 0x0F); command->length = 0x04; command->address = addressofs; command->width = 0x00 | (width & 0x0F); command->follows = 4; command->value = data; command->buffer = &command->value; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); return 0; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } static int ftdi_elan_write_pcimem(struct usb_ftdi *ftdi, int mem_offset, u8 width, u32 data) { u8 addressofs = mem_offset / 4; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else { int command_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x00 | (cPCImemwr & 0x0F); command->length = 0x04; command->address = addressofs; command->width = 0x00 | (width & 0x0F); command->follows = 4; command->value = data; command->buffer = &command->value; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); return 0; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } int usb_ftdi_elan_write_pcimem(struct platform_device *pdev, int mem_offset, u8 width, u32 data) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); return ftdi_elan_write_pcimem(ftdi, mem_offset, width, data); } EXPORT_SYMBOL_GPL(usb_ftdi_elan_write_pcimem); static int ftdi_elan_read_reg(struct usb_ftdi *ftdi, u32 *data) { wait:if (ftdi->disconnected > 0) { return -ENODEV; } else { int command_size; int respond_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; respond_size = ftdi->respond_next - ftdi->respond_head; if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; struct u132_respond *respond = &ftdi->respond[ RESPOND_MASK & ftdi->respond_next]; int result = -ENODEV; respond->result = &result; respond->header = command->header = 0x00 | cPCIu132rd; command->length = 0x04; respond->address = command->address = cU132cmd_status; command->width = 0x00; command->follows = 0; command->value = 0; command->buffer = NULL; respond->value = data; init_completion(&respond->wait_completion); ftdi->command_next += 1; ftdi->respond_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); wait_for_completion(&respond->wait_completion); return result; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } static int ftdi_elan_read_config(struct usb_ftdi *ftdi, int config_offset, u8 width, u32 *data) { u8 addressofs = config_offset / 4; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else { int command_size; int respond_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; respond_size = ftdi->respond_next - ftdi->respond_head; if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; struct u132_respond *respond = &ftdi->respond[ RESPOND_MASK & ftdi->respond_next]; int result = -ENODEV; respond->result = &result; respond->header = command->header = 0x00 | (cPCIcfgrd & 0x0F); command->length = 0x04; respond->address = command->address = addressofs; command->width = 0x00 | (width & 0x0F); command->follows = 0; command->value = 0; command->buffer = NULL; respond->value = data; init_completion(&respond->wait_completion); ftdi->command_next += 1; ftdi->respond_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); wait_for_completion(&respond->wait_completion); return result; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } static int ftdi_elan_read_pcimem(struct usb_ftdi *ftdi, int mem_offset, u8 width, u32 *data) { u8 addressofs = mem_offset / 4; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else { int command_size; int respond_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; respond_size = ftdi->respond_next - ftdi->respond_head; if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) { struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; struct u132_respond *respond = &ftdi->respond[ RESPOND_MASK & ftdi->respond_next]; int result = -ENODEV; respond->result = &result; respond->header = command->header = 0x00 | (cPCImemrd & 0x0F); command->length = 0x04; respond->address = command->address = addressofs; command->width = 0x00 | (width & 0x0F); command->follows = 0; command->value = 0; command->buffer = NULL; respond->value = data; init_completion(&respond->wait_completion); ftdi->command_next += 1; ftdi->respond_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); wait_for_completion(&respond->wait_completion); return result; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } int usb_ftdi_elan_read_pcimem(struct platform_device *pdev, int mem_offset, u8 width, u32 *data) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); if (ftdi->initialized == 0) { return -ENODEV; } else return ftdi_elan_read_pcimem(ftdi, mem_offset, width, data); } EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_pcimem); static int ftdi_elan_edset_setup(struct usb_ftdi *ftdi, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { u8 ed = ed_number - 1; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else if (ftdi->initialized == 0) { return -ENODEV; } else { int command_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_target *target = &ftdi->target[ed]; struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x80 | (ed << 5); command->length = 0x8007; command->address = (toggle_bits << 6) | (ep_number << 2) | (address << 0); command->width = usb_maxpacket(urb->dev, urb->pipe); command->follows = 8; command->value = 0; command->buffer = urb->setup_packet; target->callback = callback; target->endp = endp; target->urb = urb; target->active = 1; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); return 0; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } int usb_ftdi_elan_edset_setup(struct platform_device *pdev, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); return ftdi_elan_edset_setup(ftdi, ed_number, endp, urb, address, ep_number, toggle_bits, callback); } EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_setup); static int ftdi_elan_edset_input(struct usb_ftdi *ftdi, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { u8 ed = ed_number - 1; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else if (ftdi->initialized == 0) { return -ENODEV; } else { int command_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_target *target = &ftdi->target[ed]; struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; u32 remaining_length = urb->transfer_buffer_length - urb->actual_length; command->header = 0x82 | (ed << 5); if (remaining_length == 0) { command->length = 0x0000; } else if (remaining_length > 1024) { command->length = 0x8000 | 1023; } else command->length = 0x8000 | (remaining_length - 1); command->address = (toggle_bits << 6) | (ep_number << 2) | (address << 0); command->width = usb_maxpacket(urb->dev, urb->pipe); command->follows = 0; command->value = 0; command->buffer = NULL; target->callback = callback; target->endp = endp; target->urb = urb; target->active = 1; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); return 0; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } int usb_ftdi_elan_edset_input(struct platform_device *pdev, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); return ftdi_elan_edset_input(ftdi, ed_number, endp, urb, address, ep_number, toggle_bits, callback); } EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_input); static int ftdi_elan_edset_empty(struct usb_ftdi *ftdi, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { u8 ed = ed_number - 1; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else if (ftdi->initialized == 0) { return -ENODEV; } else { int command_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_target *target = &ftdi->target[ed]; struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x81 | (ed << 5); command->length = 0x0000; command->address = (toggle_bits << 6) | (ep_number << 2) | (address << 0); command->width = usb_maxpacket(urb->dev, urb->pipe); command->follows = 0; command->value = 0; command->buffer = NULL; target->callback = callback; target->endp = endp; target->urb = urb; target->active = 1; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); return 0; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } int usb_ftdi_elan_edset_empty(struct platform_device *pdev, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); return ftdi_elan_edset_empty(ftdi, ed_number, endp, urb, address, ep_number, toggle_bits, callback); } EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_empty); static int ftdi_elan_edset_output(struct usb_ftdi *ftdi, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { u8 ed = ed_number - 1; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else if (ftdi->initialized == 0) { return -ENODEV; } else { int command_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { u8 *b; u16 urb_size; int i = 0; char data[30 *3 + 4]; char *d = data; int m = (sizeof(data) - 1) / 3 - 1; struct u132_target *target = &ftdi->target[ed]; struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x81 | (ed << 5); command->address = (toggle_bits << 6) | (ep_number << 2) | (address << 0); command->width = usb_maxpacket(urb->dev, urb->pipe); command->follows = min_t(u32, 1024, urb->transfer_buffer_length - urb->actual_length); command->value = 0; command->buffer = urb->transfer_buffer + urb->actual_length; command->length = 0x8000 | (command->follows - 1); b = command->buffer; urb_size = command->follows; data[0] = 0; while (urb_size-- > 0) { if (i > m) { } else if (i++ < m) { int w = sprintf(d, " %02X", *b++); d += w; } else d += sprintf(d, " .."); } target->callback = callback; target->endp = endp; target->urb = urb; target->active = 1; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); return 0; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } int usb_ftdi_elan_edset_output(struct platform_device *pdev, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); return ftdi_elan_edset_output(ftdi, ed_number, endp, urb, address, ep_number, toggle_bits, callback); } EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_output); static int ftdi_elan_edset_single(struct usb_ftdi *ftdi, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { u8 ed = ed_number - 1; wait:if (ftdi->disconnected > 0) { return -ENODEV; } else if (ftdi->initialized == 0) { return -ENODEV; } else { int command_size; mutex_lock(&ftdi->u132_lock); command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { u32 remaining_length = urb->transfer_buffer_length - urb->actual_length; struct u132_target *target = &ftdi->target[ed]; struct u132_command *command = &ftdi->command[ COMMAND_MASK & ftdi->command_next]; command->header = 0x83 | (ed << 5); if (remaining_length == 0) { command->length = 0x0000; } else if (remaining_length > 1024) { command->length = 0x8000 | 1023; } else command->length = 0x8000 | (remaining_length - 1); command->address = (toggle_bits << 6) | (ep_number << 2) | (address << 0); command->width = usb_maxpacket(urb->dev, urb->pipe); command->follows = 0; command->value = 0; command->buffer = NULL; target->callback = callback; target->endp = endp; target->urb = urb; target->active = 1; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); mutex_unlock(&ftdi->u132_lock); return 0; } else { mutex_unlock(&ftdi->u132_lock); msleep(100); goto wait; } } } int usb_ftdi_elan_edset_single(struct platform_device *pdev, u8 ed_number, void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, int toggle_bits, int error_count, int condition_code, int repeat_number, int halted, int skipped, int actual, int non_null)) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); return ftdi_elan_edset_single(ftdi, ed_number, endp, urb, address, ep_number, toggle_bits, callback); } EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_single); static int ftdi_elan_edset_flush(struct usb_ftdi *ftdi, u8 ed_number, void *endp) { u8 ed = ed_number - 1; if (ftdi->disconnected > 0) { return -ENODEV; } else if (ftdi->initialized == 0) { return -ENODEV; } else { struct u132_target *target = &ftdi->target[ed]; mutex_lock(&ftdi->u132_lock); if (target->abandoning > 0) { mutex_unlock(&ftdi->u132_lock); return 0; } else { target->abandoning = 1; wait_1:if (target->active == 1) { int command_size = ftdi->command_next - ftdi->command_head; if (command_size < COMMAND_SIZE) { struct u132_command *command = &ftdi->command[COMMAND_MASK & ftdi->command_next]; command->header = 0x80 | (ed << 5) | 0x4; command->length = 0x00; command->address = 0x00; command->width = 0x00; command->follows = 0; command->value = 0; command->buffer = &command->value; ftdi->command_next += 1; ftdi_elan_kick_command_queue(ftdi); } else { mutex_unlock(&ftdi->u132_lock); msleep(100); mutex_lock(&ftdi->u132_lock); goto wait_1; } } mutex_unlock(&ftdi->u132_lock); return 0; } } } int usb_ftdi_elan_edset_flush(struct platform_device *pdev, u8 ed_number, void *endp) { struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); return ftdi_elan_edset_flush(ftdi, ed_number, endp); } EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_flush); static int ftdi_elan_flush_input_fifo(struct usb_ftdi *ftdi) { int retry_on_empty = 10; int retry_on_timeout = 5; int retry_on_status = 20; more:{ int packet_bytes = 0; int retval = usb_bulk_msg(ftdi->udev, usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), ftdi->bulk_in_buffer, ftdi->bulk_in_size, &packet_bytes, 100); if (packet_bytes > 2) { char diag[30 *3 + 4]; char *d = diag; int m = (sizeof(diag) - 1) / 3 - 1; char *b = ftdi->bulk_in_buffer; int bytes_read = 0; diag[0] = 0; while (packet_bytes-- > 0) { char c = *b++; if (bytes_read < m) { d += sprintf(d, " %02X", 0x000000FF & c); } else if (bytes_read > m) { } else d += sprintf(d, " .."); bytes_read += 1; continue; } goto more; } else if (packet_bytes > 1) { char s1 = ftdi->bulk_in_buffer[0]; char s2 = ftdi->bulk_in_buffer[1]; if (s1 == 0x31 && s2 == 0x60) { return 0; } else if (retry_on_status-- > 0) { goto more; } else { dev_err(&ftdi->udev->dev, "STATUS ERROR retry limit reached\n"); return -EFAULT; } } else if (packet_bytes > 0) { char b1 = ftdi->bulk_in_buffer[0]; dev_err(&ftdi->udev->dev, "only one byte flushed from FTDI = %02X\n", b1); if (retry_on_status-- > 0) { goto more; } else { dev_err(&ftdi->udev->dev, "STATUS ERROR retry limit reached\n"); return -EFAULT; } } else if (retval == -ETIMEDOUT) { if (retry_on_timeout-- > 0) { goto more; } else { dev_err(&ftdi->udev->dev, "TIMED OUT retry limit reached\n"); return -ENOMEM; } } else if (retval == 0) { if (retry_on_empty-- > 0) { goto more; } else { dev_err(&ftdi->udev->dev, "empty packet retry limit reached\n"); return -ENOMEM; } } else { dev_err(&ftdi->udev->dev, "error = %d\n", retval); return retval; } } return -1; } /* * send the long flush sequence * */ static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi) { int retval; struct urb *urb; char *buf; int I = 257; int i = 0; urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) return -ENOMEM; buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); if (!buf) { dev_err(&ftdi->udev->dev, "could not get a buffer for flush sequence\n"); usb_free_urb(urb); return -ENOMEM; } while (I-- > 0) buf[i++] = 0x55; usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, ftdi->bulk_out_endpointAddr), buf, i, ftdi_elan_write_bulk_callback, ftdi); urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; retval = usb_submit_urb(urb, GFP_KERNEL); if (retval) { dev_err(&ftdi->udev->dev, "failed to submit urb containing the flush sequence\n"); usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma); usb_free_urb(urb); return -ENOMEM; } usb_free_urb(urb); return 0; } /* * send the reset sequence * */ static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi) { int retval; struct urb *urb; char *buf; int I = 4; int i = 0; urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) return -ENOMEM; buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); if (!buf) { dev_err(&ftdi->udev->dev, "could not get a buffer for the reset sequence\n"); usb_free_urb(urb); return -ENOMEM; } buf[i++] = 0x55; buf[i++] = 0xAA; buf[i++] = 0x5A; buf[i++] = 0xA5; usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, ftdi->bulk_out_endpointAddr), buf, i, ftdi_elan_write_bulk_callback, ftdi); urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; retval = usb_submit_urb(urb, GFP_KERNEL); if (retval) { dev_err(&ftdi->udev->dev, "failed to submit urb containing the reset sequence\n"); usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma); usb_free_urb(urb); return -ENOMEM; } usb_free_urb(urb); return 0; } static int ftdi_elan_synchronize(struct usb_ftdi *ftdi) { int retval; int long_stop = 10; int retry_on_timeout = 5; int retry_on_empty = 10; retval = ftdi_elan_flush_input_fifo(ftdi); if (retval) return retval; ftdi->bulk_in_left = 0; ftdi->bulk_in_last = -1; while (long_stop-- > 0) { int read_stop; int read_stuck; retval = ftdi_elan_synchronize_flush(ftdi); if (retval) return retval; retval = ftdi_elan_flush_input_fifo(ftdi); if (retval) return retval; reset:retval = ftdi_elan_synchronize_reset(ftdi); if (retval) return retval; read_stop = 100; read_stuck = 10; read:{ int packet_bytes = 0; retval = usb_bulk_msg(ftdi->udev, usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), ftdi->bulk_in_buffer, ftdi->bulk_in_size, &packet_bytes, 500); if (packet_bytes > 2) { char diag[30 *3 + 4]; char *d = diag; int m = (sizeof(diag) - 1) / 3 - 1; char *b = ftdi->bulk_in_buffer; int bytes_read = 0; unsigned char c = 0; diag[0] = 0; while (packet_bytes-- > 0) { c = *b++; if (bytes_read < m) { d += sprintf(d, " %02X", c); } else if (bytes_read > m) { } else d += sprintf(d, " .."); bytes_read += 1; continue; } if (c == 0x7E) { return 0; } else { if (c == 0x55) { goto read; } else if (read_stop-- > 0) { goto read; } else { dev_err(&ftdi->udev->dev, "retry limit reached\n"); continue; } } } else if (packet_bytes > 1) { unsigned char s1 = ftdi->bulk_in_buffer[0]; unsigned char s2 = ftdi->bulk_in_buffer[1]; if (s1 == 0x31 && s2 == 0x00) { if (read_stuck-- > 0) { goto read; } else goto reset; } else { if (read_stop-- > 0) { goto read; } else { dev_err(&ftdi->udev->dev, "retry limit reached\n"); continue; } } } else if (packet_bytes > 0) { if (read_stop-- > 0) { goto read; } else { dev_err(&ftdi->udev->dev, "retry limit reached\n"); continue; } } else if (retval == -ETIMEDOUT) { if (retry_on_timeout-- > 0) { goto read; } else { dev_err(&ftdi->udev->dev, "TIMED OUT retry limit reached\n"); continue; } } else if (retval == 0) { if (retry_on_empty-- > 0) { goto read; } else { dev_err(&ftdi->udev->dev, "empty packet retry limit reached\n"); continue; } } else { dev_err(&ftdi->udev->dev, "error = %d\n", retval); if (read_stop-- > 0) { goto read; } else { dev_err(&ftdi->udev->dev, "retry limit reached\n"); continue; } } } } dev_err(&ftdi->udev->dev, "failed to synchronize\n"); return -EFAULT; } static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi) { int retry_on_empty = 10; int retry_on_timeout = 5; int retry_on_status = 50; more:{ int packet_bytes = 0; int retval = usb_bulk_msg(ftdi->udev, usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), ftdi->bulk_in_buffer, ftdi->bulk_in_size, &packet_bytes, 1000); if (packet_bytes > 2) { char diag[30 *3 + 4]; char *d = diag; int m = (sizeof(diag) - 1) / 3 - 1; char *b = ftdi->bulk_in_buffer; int bytes_read = 0; diag[0] = 0; while (packet_bytes-- > 0) { char c = *b++; if (bytes_read < m) { d += sprintf(d, " %02X", 0x000000FF & c); } else if (bytes_read > m) { } else d += sprintf(d, " .."); bytes_read += 1; } goto more; } else if (packet_bytes > 1) { char s1 = ftdi->bulk_in_buffer[0]; char s2 = ftdi->bulk_in_buffer[1]; if (s1 == 0x31 && s2 == 0x60) { return 0; } else if (retry_on_status-- > 0) { msleep(5); goto more; } else return -EFAULT; } else if (packet_bytes > 0) { char b1 = ftdi->bulk_in_buffer[0]; dev_err(&ftdi->udev->dev, "only one byte flushed from FTDI = %02X\n", b1); if (retry_on_status-- > 0) { msleep(5); goto more; } else { dev_err(&ftdi->udev->dev, "STATUS ERROR retry limit reached\n"); return -EFAULT; } } else if (retval == -ETIMEDOUT) { if (retry_on_timeout-- > 0) { goto more; } else { dev_err(&ftdi->udev->dev, "TIMED OUT retry limit reached\n"); return -ENOMEM; } } else if (retval == 0) { if (retry_on_empty-- > 0) { goto more; } else { dev_err(&ftdi->udev->dev, "empty packet retry limit reached\n"); return -ENOMEM; } } else { dev_err(&ftdi->udev->dev, "error = %d\n", retval); return -ENOMEM; } } return -1; } static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi) { int UxxxStatus = ftdi_elan_read_reg(ftdi, &ftdi->controlreg); if (UxxxStatus) return UxxxStatus; if (ftdi->controlreg & 0x00400000) { if (ftdi->card_ejected) { } else { ftdi->card_ejected = 1; dev_err(&ftdi->udev->dev, "CARD EJECTED - controlreg = %08X\n", ftdi->controlreg); } return -ENODEV; } else { u8 fn = ftdi->function - 1; int activePCIfn = fn << 8; u32 pcidata; u32 pciVID; u32 pciPID; int reg = 0; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; pciVID = pcidata & 0xFFFF; pciPID = (pcidata >> 16) & 0xFFFF; if (pciVID == ftdi->platform_data.vendor && pciPID == ftdi->platform_data.device) { return 0; } else { dev_err(&ftdi->udev->dev, "vendor=%04X pciVID=%04X device=%04X pciPID=%04X\n", ftdi->platform_data.vendor, pciVID, ftdi->platform_data.device, pciPID); return -ENODEV; } } } #define ftdi_read_pcimem(ftdi, member, data) ftdi_elan_read_pcimem(ftdi, \ offsetof(struct ohci_regs, member), 0, data); #define ftdi_write_pcimem(ftdi, member, data) ftdi_elan_write_pcimem(ftdi, \ offsetof(struct ohci_regs, member), 0, data); #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR #define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \ OHCI_INTR_WDH) static int ftdi_elan_check_controller(struct usb_ftdi *ftdi, int quirk) { int devices = 0; int retval; u32 hc_control; int num_ports; u32 control; u32 rh_a = -1; u32 status; u32 fminterval; u32 hc_fminterval; u32 periodicstart; u32 cmdstatus; u32 roothub_a; int mask = OHCI_INTR_INIT; int sleep_time = 0; int reset_timeout = 30; /* ... allow extra time */ int temp; retval = ftdi_write_pcimem(ftdi, intrdisable, OHCI_INTR_MIE); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, control, &control); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, roothub.a, &rh_a); if (retval) return retval; num_ports = rh_a & RH_A_NDP; retval = ftdi_read_pcimem(ftdi, fminterval, &hc_fminterval); if (retval) return retval; hc_fminterval &= 0x3fff; if (hc_fminterval != FI) { } hc_fminterval |= FSMP(hc_fminterval) << 16; retval = ftdi_read_pcimem(ftdi, control, &hc_control); if (retval) return retval; switch (hc_control & OHCI_CTRL_HCFS) { case OHCI_USB_OPER: sleep_time = 0; break; case OHCI_USB_SUSPEND: case OHCI_USB_RESUME: hc_control &= OHCI_CTRL_RWC; hc_control |= OHCI_USB_RESUME; sleep_time = 10; break; default: hc_control &= OHCI_CTRL_RWC; hc_control |= OHCI_USB_RESET; sleep_time = 50; break; } retval = ftdi_write_pcimem(ftdi, control, hc_control); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, control, &control); if (retval) return retval; msleep(sleep_time); retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a); if (retval) return retval; if (!(roothub_a & RH_A_NPS)) { /* power down each port */ for (temp = 0; temp < num_ports; temp++) { retval = ftdi_write_pcimem(ftdi, roothub.portstatus[temp], RH_PS_LSDA); if (retval) return retval; } } retval = ftdi_read_pcimem(ftdi, control, &control); if (retval) return retval; retry:retval = ftdi_read_pcimem(ftdi, cmdstatus, &status); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_HCR); if (retval) return retval; extra:{ retval = ftdi_read_pcimem(ftdi, cmdstatus, &status); if (retval) return retval; if (0 != (status & OHCI_HCR)) { if (--reset_timeout == 0) { dev_err(&ftdi->udev->dev, "USB HC reset timed out!\n"); return -ENODEV; } else { msleep(5); goto extra; } } } if (quirk & OHCI_QUIRK_INITRESET) { retval = ftdi_write_pcimem(ftdi, control, hc_control); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, control, &control); if (retval) return retval; } retval = ftdi_write_pcimem(ftdi, ed_controlhead, 0x00000000); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, ed_bulkhead, 0x11000000); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, hcca, 0x00000000); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, fminterval, ((fminterval & FIT) ^ FIT) | hc_fminterval); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, periodicstart, ((9 *hc_fminterval) / 10) & 0x3fff); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, periodicstart, &periodicstart); if (retval) return retval; if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) { if (!(quirk & OHCI_QUIRK_INITRESET)) { quirk |= OHCI_QUIRK_INITRESET; goto retry; } else dev_err(&ftdi->udev->dev, "init err(%08x %04x)\n", fminterval, periodicstart); } /* start controller operations */ hc_control &= OHCI_CTRL_RWC; hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER; retval = ftdi_write_pcimem(ftdi, control, hc_control); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_BLF); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, cmdstatus, &cmdstatus); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, control, &control); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_DRWE); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, intrstatus, mask); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, intrdisable, OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO | OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH | OHCI_INTR_SO); if (retval) return retval; /* handle root hub init quirks ... */ retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a); if (retval) return retval; roothub_a &= ~(RH_A_PSM | RH_A_OCPM); if (quirk & OHCI_QUIRK_SUPERIO) { roothub_a |= RH_A_NOCP; roothub_a &= ~(RH_A_POTPGT | RH_A_NPS); retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a); if (retval) return retval; } else if ((quirk & OHCI_QUIRK_AMD756) || distrust_firmware) { roothub_a |= RH_A_NPS; retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a); if (retval) return retval; } retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_LPSC); if (retval) return retval; retval = ftdi_write_pcimem(ftdi, roothub.b, (roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM); if (retval) return retval; retval = ftdi_read_pcimem(ftdi, control, &control); if (retval) return retval; mdelay((roothub_a >> 23) & 0x1fe); for (temp = 0; temp < num_ports; temp++) { u32 portstatus; retval = ftdi_read_pcimem(ftdi, roothub.portstatus[temp], &portstatus); if (retval) return retval; if (1 & portstatus) devices += 1; } return devices; } static int ftdi_elan_setup_controller(struct usb_ftdi *ftdi, int fn) { u32 latence_timer; int UxxxStatus; u32 pcidata; int reg = 0; int activePCIfn = fn << 8; UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800); if (UxxxStatus) return UxxxStatus; reg = 16; UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, 0xFFFFFFFF); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, 0xF0000000); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; reg = 12; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &latence_timer); if (UxxxStatus) return UxxxStatus; latence_timer &= 0xFFFF00FF; latence_timer |= 0x00001600; UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, latence_timer); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; reg = 4; UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, 0x06); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; for (reg = 0; reg <= 0x54; reg += 4) { UxxxStatus = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; } return 0; } static int ftdi_elan_close_controller(struct usb_ftdi *ftdi, int fn) { u32 latence_timer; int UxxxStatus; u32 pcidata; int reg = 0; int activePCIfn = fn << 8; UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800); if (UxxxStatus) return UxxxStatus; reg = 16; UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, 0xFFFFFFFF); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, 0x00000000); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; reg = 12; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &latence_timer); if (UxxxStatus) return UxxxStatus; latence_timer &= 0xFFFF00FF; latence_timer |= 0x00001600; UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, latence_timer); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; reg = 4; UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, 0x00); if (UxxxStatus) return UxxxStatus; return ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); } static int ftdi_elan_found_controller(struct usb_ftdi *ftdi, int fn, int quirk) { int result; int UxxxStatus; UxxxStatus = ftdi_elan_setup_controller(ftdi, fn); if (UxxxStatus) return UxxxStatus; result = ftdi_elan_check_controller(ftdi, quirk); UxxxStatus = ftdi_elan_close_controller(ftdi, fn); if (UxxxStatus) return UxxxStatus; return result; } static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi) { u32 controlreg; u8 sensebits; int UxxxStatus; UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000000L); if (UxxxStatus) return UxxxStatus; msleep(750); UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x100); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x500); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020CL | 0x000); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020DL | 0x000); if (UxxxStatus) return UxxxStatus; msleep(250); UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020FL | 0x000); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x800); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); if (UxxxStatus) return UxxxStatus; UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); if (UxxxStatus) return UxxxStatus; msleep(1000); sensebits = (controlreg >> 16) & 0x000F; if (0x0D == sensebits) return 0; else return - ENXIO; } static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi) { int UxxxStatus; u32 pcidata; int reg = 0; u8 fn; int activePCIfn = 0; int max_devices = 0; int controllers = 0; int unrecognized = 0; ftdi->function = 0; for (fn = 0; (fn < 4); fn++) { u32 pciVID = 0; u32 pciPID = 0; int devices = 0; activePCIfn = fn << 8; UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, &pcidata); if (UxxxStatus) return UxxxStatus; pciVID = pcidata & 0xFFFF; pciPID = (pcidata >> 16) & 0xFFFF; if ((pciVID == PCI_VENDOR_ID_OPTI) && (pciPID == 0xc861)) { devices = ftdi_elan_found_controller(ftdi, fn, 0); controllers += 1; } else if ((pciVID == PCI_VENDOR_ID_NEC) && (pciPID == 0x0035)) { devices = ftdi_elan_found_controller(ftdi, fn, 0); controllers += 1; } else if ((pciVID == PCI_VENDOR_ID_AL) && (pciPID == 0x5237)) { devices = ftdi_elan_found_controller(ftdi, fn, 0); controllers += 1; } else if ((pciVID == PCI_VENDOR_ID_ATT) && (pciPID == 0x5802)) { devices = ftdi_elan_found_controller(ftdi, fn, 0); controllers += 1; } else if (pciVID == PCI_VENDOR_ID_AMD && pciPID == 0x740c) { devices = ftdi_elan_found_controller(ftdi, fn, OHCI_QUIRK_AMD756); controllers += 1; } else if (pciVID == PCI_VENDOR_ID_COMPAQ && pciPID == 0xa0f8) { devices = ftdi_elan_found_controller(ftdi, fn, OHCI_QUIRK_ZFMICRO); controllers += 1; } else if (0 == pcidata) { } else unrecognized += 1; if (devices > max_devices) { max_devices = devices; ftdi->function = fn + 1; ftdi->platform_data.vendor = pciVID; ftdi->platform_data.device = pciPID; } } if (ftdi->function > 0) { return ftdi_elan_setup_controller(ftdi, ftdi->function - 1); } else if (controllers > 0) { return -ENXIO; } else if (unrecognized > 0) { return -ENXIO; } else { ftdi->enumerated = 0; return -ENXIO; } } /* * we use only the first bulk-in and bulk-out endpoints */ static int ftdi_elan_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *bulk_in, *bulk_out; int retval; struct usb_ftdi *ftdi; ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL); if (!ftdi) return -ENOMEM; mutex_lock(&ftdi_module_lock); list_add_tail(&ftdi->ftdi_list, &ftdi_static_list); ftdi->sequence_num = ++ftdi_instances; mutex_unlock(&ftdi_module_lock); ftdi_elan_init_kref(ftdi); sema_init(&ftdi->sw_lock, 1); ftdi->udev = usb_get_dev(interface_to_usbdev(interface)); ftdi->interface = interface; mutex_init(&ftdi->u132_lock); ftdi->expected = 4; iface_desc = interface->cur_altsetting; retval = usb_find_common_endpoints(iface_desc, &bulk_in, &bulk_out, NULL, NULL); if (retval) { dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk-out endpoints\n"); goto error; } ftdi->bulk_in_size = usb_endpoint_maxp(bulk_in); ftdi->bulk_in_endpointAddr = bulk_in->bEndpointAddress; ftdi->bulk_in_buffer = kmalloc(ftdi->bulk_in_size, GFP_KERNEL); if (!ftdi->bulk_in_buffer) { retval = -ENOMEM; goto error; } ftdi->bulk_out_endpointAddr = bulk_out->bEndpointAddress; dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n", iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr, ftdi->bulk_out_endpointAddr); usb_set_intfdata(interface, ftdi); if (iface_desc->desc.bInterfaceNumber == 0 && ftdi->bulk_in_endpointAddr == 0x81 && ftdi->bulk_out_endpointAddr == 0x02) { retval = usb_register_dev(interface, &ftdi_elan_jtag_class); if (retval) { dev_err(&ftdi->udev->dev, "Not able to get a minor for this device\n"); usb_set_intfdata(interface, NULL); retval = -ENOMEM; goto error; } else { ftdi->class = &ftdi_elan_jtag_class; dev_info(&ftdi->udev->dev, "USB FDTI=%p JTAG interface %d now attached to ftdi%d\n", ftdi, iface_desc->desc.bInterfaceNumber, interface->minor); return 0; } } else if (iface_desc->desc.bInterfaceNumber == 1 && ftdi->bulk_in_endpointAddr == 0x83 && ftdi->bulk_out_endpointAddr == 0x04) { ftdi->class = NULL; dev_info(&ftdi->udev->dev, "USB FDTI=%p ELAN interface %d now activated\n", ftdi, iface_desc->desc.bInterfaceNumber); INIT_DELAYED_WORK(&ftdi->status_work, ftdi_elan_status_work); INIT_DELAYED_WORK(&ftdi->command_work, ftdi_elan_command_work); INIT_DELAYED_WORK(&ftdi->respond_work, ftdi_elan_respond_work); ftdi_status_queue_work(ftdi, msecs_to_jiffies(3 *1000)); return 0; } else { dev_err(&ftdi->udev->dev, "Could not find ELAN's U132 device\n"); retval = -ENODEV; goto error; } error:if (ftdi) { ftdi_elan_put_kref(ftdi); } return retval; } static void ftdi_elan_disconnect(struct usb_interface *interface) { struct usb_ftdi *ftdi = usb_get_intfdata(interface); ftdi->disconnected += 1; if (ftdi->class) { int minor = interface->minor; struct usb_class_driver *class = ftdi->class; usb_set_intfdata(interface, NULL); usb_deregister_dev(interface, class); dev_info(&ftdi->udev->dev, "USB FTDI U132 jtag interface on minor %d now disconnected\n", minor); } else { ftdi_status_cancel_work(ftdi); ftdi_command_cancel_work(ftdi); ftdi_response_cancel_work(ftdi); ftdi_elan_abandon_completions(ftdi); ftdi_elan_abandon_targets(ftdi); if (ftdi->registered) { platform_device_unregister(&ftdi->platform_dev); ftdi->synchronized = 0; ftdi->enumerated = 0; ftdi->initialized = 0; ftdi->registered = 0; } ftdi->disconnected += 1; usb_set_intfdata(interface, NULL); dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller interface now disconnected\n"); } ftdi_elan_put_kref(ftdi); } static struct usb_driver ftdi_elan_driver = { .name = "ftdi-elan", .probe = ftdi_elan_probe, .disconnect = ftdi_elan_disconnect, .id_table = ftdi_elan_table, }; static int __init ftdi_elan_init(void) { int result; pr_info("driver %s\n", ftdi_elan_driver.name); mutex_init(&ftdi_module_lock); INIT_LIST_HEAD(&ftdi_static_list); result = usb_register(&ftdi_elan_driver); if (result) { pr_err("usb_register failed. Error number %d\n", result); } return result; } static void __exit ftdi_elan_exit(void) { struct usb_ftdi *ftdi; struct usb_ftdi *temp; usb_deregister(&ftdi_elan_driver); pr_info("ftdi_u132 driver deregistered\n"); list_for_each_entry_safe(ftdi, temp, &ftdi_static_list, ftdi_list) { ftdi_status_cancel_work(ftdi); ftdi_command_cancel_work(ftdi); ftdi_response_cancel_work(ftdi); } } module_init(ftdi_elan_init); module_exit(ftdi_elan_exit);
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