#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kref.h>
+#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
#include <linux/workqueue.h>
* ftdi_module_lock exists to protect access to global variables
*
*/
-static struct semaphore ftdi_module_lock;
+static struct mutex ftdi_module_lock;
static int ftdi_instances = 0;
static struct list_head ftdi_static_list;
/*
#include "usb_u132.h"
#include <asm/io.h>
#include "../core/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
/* Structure to hold all of our device specific stuff*/
struct usb_ftdi {
struct list_head ftdi_list;
- struct semaphore u132_lock;
+ struct mutex u132_lock;
int command_next;
int command_head;
struct u132_command command[COMMAND_SIZE];
dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi);
usb_put_dev(ftdi->udev);
ftdi->disconnected += 1;
- down(&ftdi_module_lock);
+ mutex_lock(&ftdi_module_lock);
list_del_init(&ftdi->ftdi_list);
ftdi_instances -= 1;
- up(&ftdi_module_lock);
+ mutex_unlock(&ftdi_module_lock);
kfree(ftdi->bulk_in_buffer);
ftdi->bulk_in_buffer = NULL;
}
static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi)
{
- down(&ftdi->u132_lock);
+ 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);
- } up(&ftdi->u132_lock);
+ } mutex_unlock(&ftdi->u132_lock);
}
static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi)
{
int ed_number = 4;
- down(&ftdi->u132_lock);
+ 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;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
ftdi_elan_do_callback(ftdi, target, NULL, 0);
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
}
}
ftdi->recieved = 0;
ftdi->expected = 4;
ftdi->ed_found = 0;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
}
static void ftdi_elan_flush_targets(struct usb_ftdi *ftdi)
{
int ed_number = 4;
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
while (ed_number-- > 0) {
struct u132_target *target = &ftdi->target[ed_number];
target->abandoning = 1;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
goto wait_1;
}
}
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
goto wait_2;
}
}
ftdi->recieved = 0;
ftdi->expected = 4;
ftdi->ed_found = 0;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
}
static void ftdi_elan_cancel_targets(struct usb_ftdi *ftdi)
{
int ed_number = 4;
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
while (ed_number-- > 0) {
struct u132_target *target = &ftdi->target[ed_number];
target->abandoning = 1;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
goto wait;
}
}
ftdi->recieved = 0;
ftdi->expected = 4;
ftdi->ed_found = 0;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
}
static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi)
static void ftdi_elan_write_bulk_callback(struct urb *urb)
{
struct usb_ftdi *ftdi = (struct usb_ftdi *)urb->context;
- if (urb->status && !(urb->status == -ENOENT || urb->status ==
- -ECONNRESET || urb->status == -ESHUTDOWN)) {
+ 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, urb->status);
+ "d\n", urb, status);
}
usb_buffer_free(urb->dev, urb->transfer_buffer_length,
urb->transfer_buffer, urb->transfer_dma);
char *b)
{
int payload = (ed_length >> 0) & 0x07FF;
- down(&ftdi->u132_lock);
+ 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) {
if (payload == 0 || target->abandoning > 0) {
target->abandoning = 0;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
payload);
ftdi->recieved = 0;
} else {
ftdi->expected = 4 + payload;
ftdi->ed_found = 1;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return b;
}
} else if (ed_type == 0x03) {
if (payload == 0 || target->abandoning > 0) {
target->abandoning = 0;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
payload);
ftdi->recieved = 0;
} else {
ftdi->expected = 4 + payload;
ftdi->ed_found = 1;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return b;
}
} else if (ed_type == 0x01) {
target->abandoning = 0;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
payload);
ftdi->recieved = 0;
return ftdi->response;
} else {
target->abandoning = 0;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
payload);
ftdi->recieved = 0;
struct u132_target *target, u16 ed_length, int ed_number, int ed_type,
char *b)
{
- down(&ftdi->u132_lock);
+ 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;
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
if (target->active)
ftdi_elan_do_callback(ftdi, target, NULL, 0);
target->abandoning = 0;
return -ENODEV;
} else {
int command_size;
- down(&ftdi->u132_lock);
+ 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->buffer = &command->value;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
return -ENODEV;
} else {
int command_size;
- down(&ftdi->u132_lock);
+ 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->buffer = &command->value;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
return -ENODEV;
} else {
int command_size;
- down(&ftdi->u132_lock);
+ 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->buffer = &command->value;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
} else {
int command_size;
int respond_size;
- down(&ftdi->u132_lock);
+ 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)
ftdi->command_next += 1;
ftdi->respond_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
wait_for_completion(&respond->wait_completion);
return result;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
} else {
int command_size;
int respond_size;
- down(&ftdi->u132_lock);
+ 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)
ftdi->command_next += 1;
ftdi->respond_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
wait_for_completion(&respond->wait_completion);
return result;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
} else {
int command_size;
int respond_size;
- down(&ftdi->u132_lock);
+ 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)
ftdi->command_next += 1;
ftdi->respond_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
wait_for_completion(&respond->wait_completion);
return result;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
return -ENODEV;
} else {
int command_size;
- down(&ftdi->u132_lock);
+ 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];
target->active = 1;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
return -ENODEV;
} else {
int command_size;
- down(&ftdi->u132_lock);
+ 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];
target->active = 1;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
return -ENODEV;
} else {
int command_size;
- down(&ftdi->u132_lock);
+ 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];
target->active = 1;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
return -ENODEV;
} else {
int command_size;
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
command_size = ftdi->command_next - ftdi->command_head;
if (command_size < COMMAND_SIZE) {
u8 *b;
target->active = 1;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
return -ENODEV;
} else {
int command_size;
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
command_size = ftdi->command_next - ftdi->command_head;
if (command_size < COMMAND_SIZE) {
int remaining_length = urb->transfer_buffer_length -
target->active = 1;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
goto wait;
}
return -ENODEV;
} else {
struct u132_target *target = &ftdi->target[ed];
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
if (target->abandoning > 0) {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
} else {
target->abandoning = 1;
ftdi->command_next += 1;
ftdi_elan_kick_command_queue(ftdi);
} else {
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
msleep(100);
- down(&ftdi->u132_lock);
+ mutex_lock(&ftdi->u132_lock);
goto wait_1;
}
}
- up(&ftdi->u132_lock);
+ mutex_unlock(&ftdi->u132_lock);
return 0;
}
}
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_QUIRK_AMD756 0x01
-#define OHCI_QUIRK_SUPERIO 0x02
-#define OHCI_QUIRK_INITRESET 0x04
-#define OHCI_BIG_ENDIAN 0x08
+
#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
#define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \
OHCI_INTR_WDH)
size_t buffer_size;
int i;
int retval = -ENOMEM;
- struct usb_ftdi *ftdi = kmalloc(sizeof(struct usb_ftdi), GFP_KERNEL);
- if (ftdi == NULL) {
+ struct usb_ftdi *ftdi;
+
+ ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL);
+ if (!ftdi) {
printk(KERN_ERR "Out of memory\n");
return -ENOMEM;
}
- memset(ftdi, 0x00, sizeof(struct usb_ftdi));
- down(&ftdi_module_lock);
+
+ mutex_lock(&ftdi_module_lock);
list_add_tail(&ftdi->ftdi_list, &ftdi_static_list);
ftdi->sequence_num = ++ftdi_instances;
- up(&ftdi_module_lock);
+ mutex_unlock(&ftdi_module_lock);
ftdi_elan_init_kref(ftdi);
init_MUTEX(&ftdi->sw_lock);
ftdi->udev = usb_get_dev(interface_to_usbdev(interface));
ftdi->interface = interface;
- init_MUTEX(&ftdi->u132_lock);
+ mutex_init(&ftdi->u132_lock);
ftdi->expected = 4;
iface_desc = interface->cur_altsetting;
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
int result;
printk(KERN_INFO "driver %s built at %s on %s\n", ftdi_elan_driver.name,
__TIME__, __DATE__);
- init_MUTEX(&ftdi_module_lock);
+ mutex_init(&ftdi_module_lock);
INIT_LIST_HEAD(&ftdi_static_list);
status_queue = create_singlethread_workqueue("ftdi-status-control");
if (!status_queue)
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