diff options
Diffstat (limited to 'drivers/char/xilinx_hwicap')
| -rw-r--r-- | drivers/char/xilinx_hwicap/buffer_icap.c | 80 | ||||
| -rw-r--r-- | drivers/char/xilinx_hwicap/fifo_icap.c | 60 | ||||
| -rw-r--r-- | drivers/char/xilinx_hwicap/xilinx_hwicap.c | 138 | ||||
| -rw-r--r-- | drivers/char/xilinx_hwicap/xilinx_hwicap.h | 24 |
4 files changed, 144 insertions, 158 deletions
diff --git a/drivers/char/xilinx_hwicap/buffer_icap.c b/drivers/char/xilinx_hwicap/buffer_icap.c index dfea2bde162b..f577daedb630 100644 --- a/drivers/char/xilinx_hwicap/buffer_icap.c +++ b/drivers/char/xilinx_hwicap/buffer_icap.c @@ -73,8 +73,8 @@ #define XHI_BUFFER_START 0 /** - * buffer_icap_get_status: Get the contents of the status register. - * @parameter base_address: is the base address of the device + * buffer_icap_get_status - Get the contents of the status register. + * @base_address: is the base address of the device * * The status register contains the ICAP status and the done bit. * @@ -94,9 +94,9 @@ static inline u32 buffer_icap_get_status(void __iomem *base_address) } /** - * buffer_icap_get_bram: Reads data from the storage buffer bram. - * @parameter base_address: contains the base address of the component. - * @parameter offset: The word offset from which the data should be read. + * buffer_icap_get_bram - Reads data from the storage buffer bram. + * @base_address: contains the base address of the component. + * @offset: The word offset from which the data should be read. * * A bram is used as a configuration memory cache. One frame of data can * be stored in this "storage buffer". @@ -108,8 +108,8 @@ static inline u32 buffer_icap_get_bram(void __iomem *base_address, } /** - * buffer_icap_busy: Return true if the icap device is busy - * @parameter base_address: is the base address of the device + * buffer_icap_busy - Return true if the icap device is busy + * @base_address: is the base address of the device * * The queries the low order bit of the status register, which * indicates whether the current configuration or readback operation @@ -121,8 +121,8 @@ static inline bool buffer_icap_busy(void __iomem *base_address) } /** - * buffer_icap_busy: Return true if the icap device is not busy - * @parameter base_address: is the base address of the device + * buffer_icap_busy - Return true if the icap device is not busy + * @base_address: is the base address of the device * * The queries the low order bit of the status register, which * indicates whether the current configuration or readback operation @@ -134,9 +134,9 @@ static inline bool buffer_icap_done(void __iomem *base_address) } /** - * buffer_icap_set_size: Set the size register. - * @parameter base_address: is the base address of the device - * @parameter data: The size in bytes. + * buffer_icap_set_size - Set the size register. + * @base_address: is the base address of the device + * @data: The size in bytes. * * The size register holds the number of 8 bit bytes to transfer between * bram and the icap (or icap to bram). @@ -148,9 +148,9 @@ static inline void buffer_icap_set_size(void __iomem *base_address, } /** - * buffer_icap_mSetoffsetReg: Set the bram offset register. - * @parameter base_address: contains the base address of the device. - * @parameter data: is the value to be written to the data register. + * buffer_icap_set_offset - Set the bram offset register. + * @base_address: contains the base address of the device. + * @data: is the value to be written to the data register. * * The bram offset register holds the starting bram address to transfer * data from during configuration or write data to during readback. @@ -162,9 +162,9 @@ static inline void buffer_icap_set_offset(void __iomem *base_address, } /** - * buffer_icap_set_rnc: Set the RNC (Readback not Configure) register. - * @parameter base_address: contains the base address of the device. - * @parameter data: is the value to be written to the data register. + * buffer_icap_set_rnc - Set the RNC (Readback not Configure) register. + * @base_address: contains the base address of the device. + * @data: is the value to be written to the data register. * * The RNC register determines the direction of the data transfer. It * controls whether a configuration or readback take place. Writing to @@ -178,10 +178,10 @@ static inline void buffer_icap_set_rnc(void __iomem *base_address, } /** - * buffer_icap_set_bram: Write data to the storage buffer bram. - * @parameter base_address: contains the base address of the component. - * @parameter offset: The word offset at which the data should be written. - * @parameter data: The value to be written to the bram offset. + * buffer_icap_set_bram - Write data to the storage buffer bram. + * @base_address: contains the base address of the component. + * @offset: The word offset at which the data should be written. + * @data: The value to be written to the bram offset. * * A bram is used as a configuration memory cache. One frame of data can * be stored in this "storage buffer". @@ -193,10 +193,10 @@ static inline void buffer_icap_set_bram(void __iomem *base_address, } /** - * buffer_icap_device_read: Transfer bytes from ICAP to the storage buffer. - * @parameter drvdata: a pointer to the drvdata. - * @parameter offset: The storage buffer start address. - * @parameter count: The number of words (32 bit) to read from the + * buffer_icap_device_read - Transfer bytes from ICAP to the storage buffer. + * @drvdata: a pointer to the drvdata. + * @offset: The storage buffer start address. + * @count: The number of words (32 bit) to read from the * device (ICAP). **/ static int buffer_icap_device_read(struct hwicap_drvdata *drvdata, @@ -227,10 +227,10 @@ static int buffer_icap_device_read(struct hwicap_drvdata *drvdata, }; /** - * buffer_icap_device_write: Transfer bytes from ICAP to the storage buffer. - * @parameter drvdata: a pointer to the drvdata. - * @parameter offset: The storage buffer start address. - * @parameter count: The number of words (32 bit) to read from the + * buffer_icap_device_write - Transfer bytes from ICAP to the storage buffer. + * @drvdata: a pointer to the drvdata. + * @offset: The storage buffer start address. + * @count: The number of words (32 bit) to read from the * device (ICAP). **/ static int buffer_icap_device_write(struct hwicap_drvdata *drvdata, @@ -261,8 +261,8 @@ static int buffer_icap_device_write(struct hwicap_drvdata *drvdata, }; /** - * buffer_icap_reset: Reset the logic of the icap device. - * @parameter drvdata: a pointer to the drvdata. + * buffer_icap_reset - Reset the logic of the icap device. + * @drvdata: a pointer to the drvdata. * * Writing to the status register resets the ICAP logic in an internal * version of the core. For the version of the core published in EDK, @@ -274,10 +274,10 @@ void buffer_icap_reset(struct hwicap_drvdata *drvdata) } /** - * buffer_icap_set_configuration: Load a partial bitstream from system memory. - * @parameter drvdata: a pointer to the drvdata. - * @parameter data: Kernel address of the partial bitstream. - * @parameter size: the size of the partial bitstream in 32 bit words. + * buffer_icap_set_configuration - Load a partial bitstream from system memory. + * @drvdata: a pointer to the drvdata. + * @data: Kernel address of the partial bitstream. + * @size: the size of the partial bitstream in 32 bit words. **/ int buffer_icap_set_configuration(struct hwicap_drvdata *drvdata, u32 *data, u32 size) @@ -333,10 +333,10 @@ int buffer_icap_set_configuration(struct hwicap_drvdata *drvdata, u32 *data, }; /** - * buffer_icap_get_configuration: Read configuration data from the device. - * @parameter drvdata: a pointer to the drvdata. - * @parameter data: Address of the data representing the partial bitstream - * @parameter size: the size of the partial bitstream in 32 bit words. + * buffer_icap_get_configuration - Read configuration data from the device. + * @drvdata: a pointer to the drvdata. + * @data: Address of the data representing the partial bitstream + * @size: the size of the partial bitstream in 32 bit words. **/ int buffer_icap_get_configuration(struct hwicap_drvdata *drvdata, u32 *data, u32 size) diff --git a/drivers/char/xilinx_hwicap/fifo_icap.c b/drivers/char/xilinx_hwicap/fifo_icap.c index 0988314694a6..6f45dbd47125 100644 --- a/drivers/char/xilinx_hwicap/fifo_icap.c +++ b/drivers/char/xilinx_hwicap/fifo_icap.c @@ -94,9 +94,9 @@ /** - * fifo_icap_fifo_write: Write data to the write FIFO. - * @parameter drvdata: a pointer to the drvdata. - * @parameter data: the 32-bit value to be written to the FIFO. + * fifo_icap_fifo_write - Write data to the write FIFO. + * @drvdata: a pointer to the drvdata. + * @data: the 32-bit value to be written to the FIFO. * * This function will silently fail if the fifo is full. **/ @@ -108,8 +108,8 @@ static inline void fifo_icap_fifo_write(struct hwicap_drvdata *drvdata, } /** - * fifo_icap_fifo_read: Read data from the Read FIFO. - * @parameter drvdata: a pointer to the drvdata. + * fifo_icap_fifo_read - Read data from the Read FIFO. + * @drvdata: a pointer to the drvdata. * * This function will silently fail if the fifo is empty. **/ @@ -121,9 +121,9 @@ static inline u32 fifo_icap_fifo_read(struct hwicap_drvdata *drvdata) } /** - * fifo_icap_set_read_size: Set the the size register. - * @parameter drvdata: a pointer to the drvdata. - * @parameter data: the size of the following read transaction, in words. + * fifo_icap_set_read_size - Set the the size register. + * @drvdata: a pointer to the drvdata. + * @data: the size of the following read transaction, in words. **/ static inline void fifo_icap_set_read_size(struct hwicap_drvdata *drvdata, u32 data) @@ -132,8 +132,8 @@ static inline void fifo_icap_set_read_size(struct hwicap_drvdata *drvdata, } /** - * fifo_icap_start_config: Initiate a configuration (write) to the device. - * @parameter drvdata: a pointer to the drvdata. + * fifo_icap_start_config - Initiate a configuration (write) to the device. + * @drvdata: a pointer to the drvdata. **/ static inline void fifo_icap_start_config(struct hwicap_drvdata *drvdata) { @@ -142,8 +142,8 @@ static inline void fifo_icap_start_config(struct hwicap_drvdata *drvdata) } /** - * fifo_icap_start_readback: Initiate a readback from the device. - * @parameter drvdata: a pointer to the drvdata. + * fifo_icap_start_readback - Initiate a readback from the device. + * @drvdata: a pointer to the drvdata. **/ static inline void fifo_icap_start_readback(struct hwicap_drvdata *drvdata) { @@ -152,8 +152,8 @@ static inline void fifo_icap_start_readback(struct hwicap_drvdata *drvdata) } /** - * fifo_icap_busy: Return true if the ICAP is still processing a transaction. - * @parameter drvdata: a pointer to the drvdata. + * fifo_icap_busy - Return true if the ICAP is still processing a transaction. + * @drvdata: a pointer to the drvdata. **/ static inline u32 fifo_icap_busy(struct hwicap_drvdata *drvdata) { @@ -163,8 +163,8 @@ static inline u32 fifo_icap_busy(struct hwicap_drvdata *drvdata) } /** - * fifo_icap_write_fifo_vacancy: Query the write fifo available space. - * @parameter drvdata: a pointer to the drvdata. + * fifo_icap_write_fifo_vacancy - Query the write fifo available space. + * @drvdata: a pointer to the drvdata. * * Return the number of words that can be safely pushed into the write fifo. **/ @@ -175,8 +175,8 @@ static inline u32 fifo_icap_write_fifo_vacancy( } /** - * fifo_icap_read_fifo_occupancy: Query the read fifo available data. - * @parameter drvdata: a pointer to the drvdata. + * fifo_icap_read_fifo_occupancy - Query the read fifo available data. + * @drvdata: a pointer to the drvdata. * * Return the number of words that can be safely read from the read fifo. **/ @@ -187,11 +187,11 @@ static inline u32 fifo_icap_read_fifo_occupancy( } /** - * fifo_icap_set_configuration: Send configuration data to the ICAP. - * @parameter drvdata: a pointer to the drvdata. - * @parameter frame_buffer: a pointer to the data to be written to the + * fifo_icap_set_configuration - Send configuration data to the ICAP. + * @drvdata: a pointer to the drvdata. + * @frame_buffer: a pointer to the data to be written to the * ICAP device. - * @parameter num_words: the number of words (32 bit) to write to the ICAP + * @num_words: the number of words (32 bit) to write to the ICAP * device. * This function writes the given user data to the Write FIFO in @@ -266,10 +266,10 @@ int fifo_icap_set_configuration(struct hwicap_drvdata *drvdata, } /** - * fifo_icap_get_configuration: Read configuration data from the device. - * @parameter drvdata: a pointer to the drvdata. - * @parameter data: Address of the data representing the partial bitstream - * @parameter size: the size of the partial bitstream in 32 bit words. + * fifo_icap_get_configuration - Read configuration data from the device. + * @drvdata: a pointer to the drvdata. + * @data: Address of the data representing the partial bitstream + * @size: the size of the partial bitstream in 32 bit words. * * This function reads the specified number of words from the ICAP device in * the polled mode. @@ -335,8 +335,8 @@ int fifo_icap_get_configuration(struct hwicap_drvdata *drvdata, } /** - * buffer_icap_reset: Reset the logic of the icap device. - * @parameter drvdata: a pointer to the drvdata. + * buffer_icap_reset - Reset the logic of the icap device. + * @drvdata: a pointer to the drvdata. * * This function forces the software reset of the complete HWICAP device. * All the registers will return to the default value and the FIFO is also @@ -360,8 +360,8 @@ void fifo_icap_reset(struct hwicap_drvdata *drvdata) } /** - * fifo_icap_flush_fifo: This function flushes the FIFOs in the device. - * @parameter drvdata: a pointer to the drvdata. + * fifo_icap_flush_fifo - This function flushes the FIFOs in the device. + * @drvdata: a pointer to the drvdata. */ void fifo_icap_flush_fifo(struct hwicap_drvdata *drvdata) { diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.c b/drivers/char/xilinx_hwicap/xilinx_hwicap.c index 24f6aef0fd3c..2284fa2a5a57 100644 --- a/drivers/char/xilinx_hwicap/xilinx_hwicap.c +++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.c @@ -84,7 +84,7 @@ #include <linux/init.h> #include <linux/poll.h> #include <linux/proc_fs.h> -#include <asm/semaphore.h> +#include <linux/mutex.h> #include <linux/sysctl.h> #include <linux/version.h> #include <linux/fs.h> @@ -119,6 +119,7 @@ module_param(xhwicap_minor, int, S_IRUGO); /* An array, which is set to true when the device is registered. */ static bool probed_devices[HWICAP_DEVICES]; +static struct mutex icap_sem; static struct class *icap_class; @@ -199,14 +200,14 @@ static const struct config_registers v5_config_registers = { }; /** - * hwicap_command_desync: Send a DESYNC command to the ICAP port. - * @parameter drvdata: a pointer to the drvdata. + * hwicap_command_desync - Send a DESYNC command to the ICAP port. + * @drvdata: a pointer to the drvdata. * * This command desynchronizes the ICAP After this command, a * bitstream containing a NULL packet, followed by a SYNCH packet is * required before the ICAP will recognize commands. */ -int hwicap_command_desync(struct hwicap_drvdata *drvdata) +static int hwicap_command_desync(struct hwicap_drvdata *drvdata) { u32 buffer[4]; u32 index = 0; @@ -228,51 +229,18 @@ int hwicap_command_desync(struct hwicap_drvdata *drvdata) } /** - * hwicap_command_capture: Send a CAPTURE command to the ICAP port. - * @parameter drvdata: a pointer to the drvdata. - * - * This command captures all of the flip flop states so they will be - * available during readback. One can use this command instead of - * enabling the CAPTURE block in the design. - */ -int hwicap_command_capture(struct hwicap_drvdata *drvdata) -{ - u32 buffer[7]; - u32 index = 0; - - /* - * Create the data to be written to the ICAP. - */ - buffer[index++] = XHI_DUMMY_PACKET; - buffer[index++] = XHI_SYNC_PACKET; - buffer[index++] = XHI_NOOP_PACKET; - buffer[index++] = hwicap_type_1_write(drvdata->config_regs->CMD) | 1; - buffer[index++] = XHI_CMD_GCAPTURE; - buffer[index++] = XHI_DUMMY_PACKET; - buffer[index++] = XHI_DUMMY_PACKET; - - /* - * Write the data to the FIFO and intiate the transfer of data - * present in the FIFO to the ICAP device. - */ - return drvdata->config->set_configuration(drvdata, - &buffer[0], index); - -} - -/** - * hwicap_get_configuration_register: Query a configuration register. - * @parameter drvdata: a pointer to the drvdata. - * @parameter reg: a constant which represents the configuration + * hwicap_get_configuration_register - Query a configuration register. + * @drvdata: a pointer to the drvdata. + * @reg: a constant which represents the configuration * register value to be returned. * Examples: XHI_IDCODE, XHI_FLR. - * @parameter RegData: returns the value of the register. + * @reg_data: returns the value of the register. * * Sends a query packet to the ICAP and then receives the response. * The icap is left in Synched state. */ -int hwicap_get_configuration_register(struct hwicap_drvdata *drvdata, - u32 reg, u32 *RegData) +static int hwicap_get_configuration_register(struct hwicap_drvdata *drvdata, + u32 reg, u32 *reg_data) { int status; u32 buffer[6]; @@ -300,14 +268,14 @@ int hwicap_get_configuration_register(struct hwicap_drvdata *drvdata, /* * Read the configuration register */ - status = drvdata->config->get_configuration(drvdata, RegData, 1); + status = drvdata->config->get_configuration(drvdata, reg_data, 1); if (status) return status; return 0; } -int hwicap_initialize_hwicap(struct hwicap_drvdata *drvdata) +static int hwicap_initialize_hwicap(struct hwicap_drvdata *drvdata) { int status; u32 idcode; @@ -344,7 +312,7 @@ int hwicap_initialize_hwicap(struct hwicap_drvdata *drvdata) } static ssize_t -hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos) +hwicap_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct hwicap_drvdata *drvdata = file->private_data; ssize_t bytes_to_read = 0; @@ -353,8 +321,9 @@ hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos) u32 bytes_remaining; int status; - if (down_interruptible(&drvdata->sem)) - return -ERESTARTSYS; + status = mutex_lock_interruptible(&drvdata->sem); + if (status) + return status; if (drvdata->read_buffer_in_use) { /* If there are leftover bytes in the buffer, just */ @@ -370,8 +339,9 @@ hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos) goto error; } drvdata->read_buffer_in_use -= bytes_to_read; - memcpy(drvdata->read_buffer + bytes_to_read, - drvdata->read_buffer, 4 - bytes_to_read); + memmove(drvdata->read_buffer, + drvdata->read_buffer + bytes_to_read, + 4 - bytes_to_read); } else { /* Get new data from the ICAP, and return was was requested. */ kbuf = (u32 *) get_zeroed_page(GFP_KERNEL); @@ -414,18 +384,20 @@ hwicap_read(struct file *file, char *buf, size_t count, loff_t *ppos) status = -EFAULT; goto error; } - memcpy(kbuf, drvdata->read_buffer, bytes_remaining); + memcpy(drvdata->read_buffer, + kbuf, + bytes_remaining); drvdata->read_buffer_in_use = bytes_remaining; free_page((unsigned long)kbuf); } status = bytes_to_read; error: - up(&drvdata->sem); + mutex_unlock(&drvdata->sem); return status; } static ssize_t -hwicap_write(struct file *file, const char *buf, +hwicap_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct hwicap_drvdata *drvdata = file->private_data; @@ -435,8 +407,9 @@ hwicap_write(struct file *file, const char *buf, ssize_t len; ssize_t status; - if (down_interruptible(&drvdata->sem)) - return -ERESTARTSYS; + status = mutex_lock_interruptible(&drvdata->sem); + if (status) + return status; left += drvdata->write_buffer_in_use; @@ -465,7 +438,7 @@ hwicap_write(struct file *file, const char *buf, memcpy(kbuf, drvdata->write_buffer, drvdata->write_buffer_in_use); if (copy_from_user( - (((char *)kbuf) + (drvdata->write_buffer_in_use)), + (((char *)kbuf) + drvdata->write_buffer_in_use), buf + written, len - (drvdata->write_buffer_in_use))) { free_page((unsigned long)kbuf); @@ -508,7 +481,7 @@ hwicap_write(struct file *file, const char *buf, free_page((unsigned long)kbuf); status = written; error: - up(&drvdata->sem); + mutex_unlock(&drvdata->sem); return status; } @@ -519,8 +492,9 @@ static int hwicap_open(struct inode *inode, struct file *file) drvdata = container_of(inode->i_cdev, struct hwicap_drvdata, cdev); - if (down_interruptible(&drvdata->sem)) - return -ERESTARTSYS; + status = mutex_lock_interruptible(&drvdata->sem); + if (status) + return status; if (drvdata->is_open) { status = -EBUSY; @@ -539,7 +513,7 @@ static int hwicap_open(struct inode *inode, struct file *file) drvdata->is_open = 1; error: - up(&drvdata->sem); + mutex_unlock(&drvdata->sem); return status; } @@ -549,8 +523,7 @@ static int hwicap_release(struct inode *inode, struct file *file) int i; int status = 0; - if (down_interruptible(&drvdata->sem)) - return -ERESTARTSYS; + mutex_lock(&drvdata->sem); if (drvdata->write_buffer_in_use) { /* Flush write buffer. */ @@ -569,7 +542,7 @@ static int hwicap_release(struct inode *inode, struct file *file) error: drvdata->is_open = 0; - up(&drvdata->sem); + mutex_unlock(&drvdata->sem); return status; } @@ -592,31 +565,36 @@ static int __devinit hwicap_setup(struct device *dev, int id, dev_info(dev, "Xilinx icap port driver\n"); + mutex_lock(&icap_sem); + if (id < 0) { for (id = 0; id < HWICAP_DEVICES; id++) if (!probed_devices[id]) break; } if (id < 0 || id >= HWICAP_DEVICES) { + mutex_unlock(&icap_sem); dev_err(dev, "%s%i too large\n", DRIVER_NAME, id); return -EINVAL; } if (probed_devices[id]) { + mutex_unlock(&icap_sem); dev_err(dev, "cannot assign to %s%i; it is already in use\n", DRIVER_NAME, id); return -EBUSY; } probed_devices[id] = 1; + mutex_unlock(&icap_sem); devt = MKDEV(xhwicap_major, xhwicap_minor + id); - drvdata = kmalloc(sizeof(struct hwicap_drvdata), GFP_KERNEL); + drvdata = kzalloc(sizeof(struct hwicap_drvdata), GFP_KERNEL); if (!drvdata) { dev_err(dev, "Couldn't allocate device private record\n"); - return -ENOMEM; + retval = -ENOMEM; + goto failed0; } - memset((void *)drvdata, 0, sizeof(struct hwicap_drvdata)); dev_set_drvdata(dev, (void *)drvdata); if (!regs_res) { @@ -648,7 +626,7 @@ static int __devinit hwicap_setup(struct device *dev, int id, drvdata->config = config; drvdata->config_regs = config_regs; - init_MUTEX(&drvdata->sem); + mutex_init(&drvdata->sem); drvdata->is_open = 0; dev_info(dev, "ioremap %lx to %p with size %x\n", @@ -663,7 +641,7 @@ static int __devinit hwicap_setup(struct device *dev, int id, goto failed3; } /* devfs_mk_cdev(devt, S_IFCHR|S_IRUGO|S_IWUGO, DRIVER_NAME); */ - class_device_create(icap_class, NULL, devt, NULL, DRIVER_NAME); + device_create(icap_class, dev, devt, "%s%d", DRIVER_NAME, id); return 0; /* success */ failed3: @@ -675,6 +653,11 @@ static int __devinit hwicap_setup(struct device *dev, int id, failed1: kfree(drvdata); + failed0: + mutex_lock(&icap_sem); + probed_devices[id] = 0; + mutex_unlock(&icap_sem); + return retval; } @@ -699,14 +682,16 @@ static int __devexit hwicap_remove(struct device *dev) if (!drvdata) return 0; - class_device_destroy(icap_class, drvdata->devt); + device_destroy(icap_class, drvdata->devt); cdev_del(&drvdata->cdev); iounmap(drvdata->base_address); release_mem_region(drvdata->mem_start, drvdata->mem_size); kfree(drvdata); dev_set_drvdata(dev, NULL); - probed_devices[MINOR(dev->devt)-xhwicap_minor] = 0; + mutex_lock(&icap_sem); + probed_devices[MINOR(dev->devt)-xhwicap_minor] = 0; + mutex_unlock(&icap_sem); return 0; /* success */ } @@ -821,28 +806,29 @@ static struct of_platform_driver hwicap_of_driver = { }; /* Registration helpers to keep the number of #ifdefs to a minimum */ -static inline int __devinit hwicap_of_register(void) +static inline int __init hwicap_of_register(void) { pr_debug("hwicap: calling of_register_platform_driver()\n"); return of_register_platform_driver(&hwicap_of_driver); } -static inline void __devexit hwicap_of_unregister(void) +static inline void __exit hwicap_of_unregister(void) { of_unregister_platform_driver(&hwicap_of_driver); } #else /* CONFIG_OF */ /* CONFIG_OF not enabled; do nothing helpers */ -static inline int __devinit hwicap_of_register(void) { return 0; } -static inline void __devexit hwicap_of_unregister(void) { } +static inline int __init hwicap_of_register(void) { return 0; } +static inline void __exit hwicap_of_unregister(void) { } #endif /* CONFIG_OF */ -static int __devinit hwicap_module_init(void) +static int __init hwicap_module_init(void) { dev_t devt; int retval; icap_class = class_create(THIS_MODULE, "xilinx_config"); + mutex_init(&icap_sem); if (xhwicap_major) { devt = MKDEV(xhwicap_major, xhwicap_minor); @@ -883,7 +869,7 @@ static int __devinit hwicap_module_init(void) return retval; } -static void __devexit hwicap_module_cleanup(void) +static void __exit hwicap_module_cleanup(void) { dev_t devt = MKDEV(xhwicap_major, xhwicap_minor); diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.h b/drivers/char/xilinx_hwicap/xilinx_hwicap.h index ae771cac1629..405fee7e189b 100644 --- a/drivers/char/xilinx_hwicap/xilinx_hwicap.h +++ b/drivers/char/xilinx_hwicap/xilinx_hwicap.h @@ -48,9 +48,9 @@ struct hwicap_drvdata { u8 write_buffer[4]; u32 read_buffer_in_use; /* Always in [0,3] */ u8 read_buffer[4]; - u32 mem_start; /* phys. address of the control registers */ - u32 mem_end; /* phys. address of the control registers */ - u32 mem_size; + resource_size_t mem_start;/* phys. address of the control registers */ + resource_size_t mem_end; /* phys. address of the control registers */ + resource_size_t mem_size; void __iomem *base_address;/* virt. address of the control registers */ struct device *dev; @@ -61,7 +61,7 @@ struct hwicap_drvdata { const struct config_registers *config_regs; void *private_data; bool is_open; - struct semaphore sem; + struct mutex sem; }; struct hwicap_driver_config { @@ -164,29 +164,29 @@ struct config_registers { #define XHI_DISABLED_AUTO_CRC 0x0000DEFCUL /** - * hwicap_type_1_read: Generates a Type 1 read packet header. - * @parameter: Register is the address of the register to be read back. + * hwicap_type_1_read - Generates a Type 1 read packet header. + * @reg: is the address of the register to be read back. * * Generates a Type 1 read packet header, which is used to indirectly * read registers in the configuration logic. This packet must then * be sent through the icap device, and a return packet received with * the information. **/ -static inline u32 hwicap_type_1_read(u32 Register) +static inline u32 hwicap_type_1_read(u32 reg) { return (XHI_TYPE_1 << XHI_TYPE_SHIFT) | - (Register << XHI_REGISTER_SHIFT) | + (reg << XHI_REGISTER_SHIFT) | (XHI_OP_READ << XHI_OP_SHIFT); } /** - * hwicap_type_1_write: Generates a Type 1 write packet header - * @parameter: Register is the address of the register to be read back. + * hwicap_type_1_write - Generates a Type 1 write packet header + * @reg: is the address of the register to be read back. **/ -static inline u32 hwicap_type_1_write(u32 Register) +static inline u32 hwicap_type_1_write(u32 reg) { return (XHI_TYPE_1 << XHI_TYPE_SHIFT) | - (Register << XHI_REGISTER_SHIFT) | + (reg << XHI_REGISTER_SHIFT) | (XHI_OP_WRITE << XHI_OP_SHIFT); } |
