diff options
Diffstat (limited to 'drivers/misc/hdpuftrs')
| -rw-r--r-- | drivers/misc/hdpuftrs/Makefile | 1 | ||||
| -rw-r--r-- | drivers/misc/hdpuftrs/hdpu_cpustate.c | 248 | ||||
| -rw-r--r-- | drivers/misc/hdpuftrs/hdpu_nexus.c | 110 |
3 files changed, 0 insertions, 359 deletions
diff --git a/drivers/misc/hdpuftrs/Makefile b/drivers/misc/hdpuftrs/Makefile deleted file mode 100644 index ac74ae67923..00000000000 --- a/drivers/misc/hdpuftrs/Makefile +++ /dev/null @@ -1 +0,0 @@ -obj-$(CONFIG_HDPU_FEATURES) := hdpu_cpustate.o hdpu_nexus.o diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c deleted file mode 100644 index 11a801be71c..00000000000 --- a/drivers/misc/hdpuftrs/hdpu_cpustate.c +++ /dev/null @@ -1,248 +0,0 @@ -/* - * Sky CPU State Driver - * - * Copyright (C) 2002 Brian Waite - * - * This driver allows use of the CPU state bits - * It exports the /dev/sky_cpustate and also - * /proc/sky_cpustate pseudo-file for status information. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/spinlock.h> -#include <linux/miscdevice.h> -#include <linux/pci.h> -#include <linux/proc_fs.h> -#include <linux/platform_device.h> -#include <asm/uaccess.h> -#include <linux/hdpu_features.h> - -#define SKY_CPUSTATE_VERSION "1.1" - -static int hdpu_cpustate_probe(struct platform_device *pdev); -static int hdpu_cpustate_remove(struct platform_device *pdev); - -struct cpustate_t cpustate; - -static int cpustate_get_ref(int excl) -{ - - int retval = -EBUSY; - - spin_lock(&cpustate.lock); - - if (cpustate.excl) - goto out_busy; - - if (excl) { - if (cpustate.open_count) - goto out_busy; - cpustate.excl = 1; - } - - cpustate.open_count++; - retval = 0; - - out_busy: - spin_unlock(&cpustate.lock); - return retval; -} - -static int cpustate_free_ref(void) -{ - - spin_lock(&cpustate.lock); - - cpustate.excl = 0; - cpustate.open_count--; - - spin_unlock(&cpustate.lock); - return 0; -} - -unsigned char cpustate_get_state(void) -{ - - return cpustate.cached_val; -} - -void cpustate_set_state(unsigned char new_state) -{ - unsigned int state = (new_state << 21); - -#ifdef DEBUG_CPUSTATE - printk("CPUSTATE -> 0x%x\n", new_state); -#endif - spin_lock(&cpustate.lock); - cpustate.cached_val = new_state; - writel((0xff << 21), cpustate.clr_addr); - writel(state, cpustate.set_addr); - spin_unlock(&cpustate.lock); -} - -/* - * Now all the various file operations that we export. - */ - -static ssize_t cpustate_read(struct file *file, char *buf, - size_t count, loff_t * ppos) -{ - unsigned char data; - - if (count < 0) - return -EFAULT; - if (count == 0) - return 0; - - data = cpustate_get_state(); - if (copy_to_user(buf, &data, sizeof(unsigned char))) - return -EFAULT; - return sizeof(unsigned char); -} - -static ssize_t cpustate_write(struct file *file, const char *buf, - size_t count, loff_t * ppos) -{ - unsigned char data; - - if (count < 0) - return -EFAULT; - - if (count == 0) - return 0; - - if (copy_from_user((unsigned char *)&data, buf, sizeof(unsigned char))) - return -EFAULT; - - cpustate_set_state(data); - return sizeof(unsigned char); -} - -static int cpustate_open(struct inode *inode, struct file *file) -{ - return cpustate_get_ref((file->f_flags & O_EXCL)); -} - -static int cpustate_release(struct inode *inode, struct file *file) -{ - return cpustate_free_ref(); -} - -/* - * Info exported via "/proc/sky_cpustate". - */ -static int cpustate_read_proc(char *page, char **start, off_t off, - int count, int *eof, void *data) -{ - char *p = page; - int len = 0; - - p += sprintf(p, "CPU State: %04x\n", cpustate_get_state()); - len = p - page; - - if (len <= off + count) - *eof = 1; - *start = page + off; - len -= off; - if (len > count) - len = count; - if (len < 0) - len = 0; - return len; -} - -static struct platform_driver hdpu_cpustate_driver = { - .probe = hdpu_cpustate_probe, - .remove = hdpu_cpustate_remove, - .driver = { - .name = HDPU_CPUSTATE_NAME, - }, -}; - -/* - * The various file operations we support. - */ -static struct file_operations cpustate_fops = { - owner:THIS_MODULE, - open:cpustate_open, - release:cpustate_release, - read:cpustate_read, - write:cpustate_write, - fasync:NULL, - poll:NULL, - ioctl:NULL, - llseek:no_llseek, - -}; - -static struct miscdevice cpustate_dev = { - MISC_DYNAMIC_MINOR, - "sky_cpustate", - &cpustate_fops -}; - -static int hdpu_cpustate_probe(struct platform_device *pdev) -{ - struct resource *res; - struct proc_dir_entry *proc_de; - int ret; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - cpustate.set_addr = (unsigned long *)res->start; - cpustate.clr_addr = (unsigned long *)res->end - 1; - - ret = misc_register(&cpustate_dev); - if (ret) { - printk(KERN_WARNING "sky_cpustate: Unable to register misc " - "device.\n"); - cpustate.set_addr = NULL; - cpustate.clr_addr = NULL; - return ret; - } - - proc_de = create_proc_read_entry("sky_cpustate", 0, 0, - cpustate_read_proc, NULL); - if (proc_de == NULL) - printk(KERN_WARNING "sky_cpustate: Unable to create proc " - "dir entry\n"); - - printk(KERN_INFO "Sky CPU State Driver v" SKY_CPUSTATE_VERSION "\n"); - return 0; -} - -static int hdpu_cpustate_remove(struct platform_device *pdev) -{ - - cpustate.set_addr = NULL; - cpustate.clr_addr = NULL; - - remove_proc_entry("sky_cpustate", NULL); - misc_deregister(&cpustate_dev); - return 0; - -} - -static int __init cpustate_init(void) -{ - int rc; - rc = platform_driver_register(&hdpu_cpustate_driver); - return rc; -} - -static void __exit cpustate_exit(void) -{ - platform_driver_unregister(&hdpu_cpustate_driver); -} - -module_init(cpustate_init); -module_exit(cpustate_exit); - -MODULE_AUTHOR("Brian Waite"); -MODULE_LICENSE("GPL"); diff --git a/drivers/misc/hdpuftrs/hdpu_nexus.c b/drivers/misc/hdpuftrs/hdpu_nexus.c deleted file mode 100644 index ea9d5f233c8..00000000000 --- a/drivers/misc/hdpuftrs/hdpu_nexus.c +++ /dev/null @@ -1,110 +0,0 @@ -/* - * Sky Nexus Register Driver - * - * Copyright (C) 2002 Brian Waite - * - * This driver allows reading the Nexus register - * It exports the /proc/sky_chassis_id and also - * /proc/sky_slot_id pseudo-file for status information. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/proc_fs.h> -#include <linux/hdpu_features.h> -#include <linux/pci.h> - -#include <linux/platform_device.h> - -static int hdpu_nexus_probe(struct platform_device *pdev); -static int hdpu_nexus_remove(struct platform_device *pdev); - -static struct proc_dir_entry *hdpu_slot_id; -static struct proc_dir_entry *hdpu_chassis_id; -static int slot_id = -1; -static int chassis_id = -1; - -static struct platform_driver hdpu_nexus_driver = { - .probe = hdpu_nexus_probe, - .remove = hdpu_nexus_remove, - .driver = { - .name = HDPU_NEXUS_NAME, - }, -}; - -int hdpu_slot_id_read(char *buffer, char **buffer_location, off_t offset, - int buffer_length, int *zero, void *ptr) -{ - - if (offset > 0) - return 0; - return sprintf(buffer, "%d\n", slot_id); -} - -int hdpu_chassis_id_read(char *buffer, char **buffer_location, off_t offset, - int buffer_length, int *zero, void *ptr) -{ - - if (offset > 0) - return 0; - return sprintf(buffer, "%d\n", chassis_id); -} - -static int hdpu_nexus_probe(struct platform_device *pdev) -{ - struct resource *res; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - int *nexus_id_addr; - nexus_id_addr = - ioremap(res->start, (unsigned long)(res->end - res->start)); - if (nexus_id_addr) { - slot_id = (*nexus_id_addr >> 8) & 0x1f; - chassis_id = *nexus_id_addr & 0xff; - iounmap(nexus_id_addr); - } else - printk("Could not map slot id\n"); - hdpu_slot_id = create_proc_entry("sky_slot_id", 0666, &proc_root); - hdpu_slot_id->read_proc = hdpu_slot_id_read; - hdpu_slot_id->nlink = 1; - - hdpu_chassis_id = create_proc_entry("sky_chassis_id", 0666, &proc_root); - hdpu_chassis_id->read_proc = hdpu_chassis_id_read; - hdpu_chassis_id->nlink = 1; - return 0; -} - -static int hdpu_nexus_remove(struct platform_device *pdev) -{ - slot_id = -1; - chassis_id = -1; - remove_proc_entry("sky_slot_id", &proc_root); - remove_proc_entry("sky_chassis_id", &proc_root); - hdpu_slot_id = 0; - hdpu_chassis_id = 0; - return 0; -} - -static int __init nexus_init(void) -{ - int rc; - rc = platform_driver_register(&hdpu_nexus_driver); - return rc; -} - -static void __exit nexus_exit(void) -{ - platform_driver_unregister(&hdpu_nexus_driver); -} - -module_init(nexus_init); -module_exit(nexus_exit); - -MODULE_AUTHOR("Brian Waite"); -MODULE_LICENSE("GPL"); |