diff options
Diffstat (limited to 'arch/mips/kernel/vpe-cmp.c')
| -rw-r--r-- | arch/mips/kernel/vpe-cmp.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/arch/mips/kernel/vpe-cmp.c b/arch/mips/kernel/vpe-cmp.c deleted file mode 100644 index 92140edb3ce3..000000000000 --- a/arch/mips/kernel/vpe-cmp.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2004, 2005 MIPS Technologies, Inc. All rights reserved. - * Copyright (C) 2013 Imagination Technologies Ltd. - */ -#include <linux/kernel.h> -#include <linux/device.h> -#include <linux/fs.h> -#include <linux/slab.h> -#include <linux/export.h> - -#include <asm/vpe.h> - -static int major; - -void cleanup_tc(struct tc *tc) -{ - -} - -static ssize_t store_kill(struct device *dev, struct device_attribute *attr, - const char *buf, size_t len) -{ - struct vpe *vpe = get_vpe(aprp_cpu_index()); - struct vpe_notifications *notifier; - - list_for_each_entry(notifier, &vpe->notify, list) - notifier->stop(aprp_cpu_index()); - - release_progmem(vpe->load_addr); - vpe->state = VPE_STATE_UNUSED; - - return len; -} -static DEVICE_ATTR(kill, S_IWUSR, NULL, store_kill); - -static ssize_t ntcs_show(struct device *cd, struct device_attribute *attr, - char *buf) -{ - struct vpe *vpe = get_vpe(aprp_cpu_index()); - - return sprintf(buf, "%d\n", vpe->ntcs); -} - -static ssize_t ntcs_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t len) -{ - struct vpe *vpe = get_vpe(aprp_cpu_index()); - unsigned long new; - int ret; - - ret = kstrtoul(buf, 0, &new); - if (ret < 0) - return ret; - - /* APRP can only reserve one TC in a VPE and no more. */ - if (new != 1) - return -EINVAL; - - vpe->ntcs = new; - - return len; -} -static DEVICE_ATTR_RW(ntcs); - -static struct attribute *vpe_attrs[] = { - &dev_attr_kill.attr, - &dev_attr_ntcs.attr, - NULL, -}; -ATTRIBUTE_GROUPS(vpe); - -static void vpe_device_release(struct device *cd) -{ -} - -static struct class vpe_class = { - .name = "vpe", - .owner = THIS_MODULE, - .dev_release = vpe_device_release, - .dev_groups = vpe_groups, -}; - -static struct device vpe_device; - -int __init vpe_module_init(void) -{ - struct vpe *v = NULL; - struct tc *t; - int err; - - if (!cpu_has_mipsmt) { - pr_warn("VPE loader: not a MIPS MT capable processor\n"); - return -ENODEV; - } - - if (num_possible_cpus() - aprp_cpu_index() < 1) { - pr_warn("No VPEs reserved for AP/SP, not initialize VPE loader\n" - "Pass maxcpus=<n> argument as kernel argument\n"); - return -ENODEV; - } - - major = register_chrdev(0, VPE_MODULE_NAME, &vpe_fops); - if (major < 0) { - pr_warn("VPE loader: unable to register character device\n"); - return major; - } - - err = class_register(&vpe_class); - if (err) { - pr_err("vpe_class registration failed\n"); - goto out_chrdev; - } - - device_initialize(&vpe_device); - vpe_device.class = &vpe_class; - vpe_device.parent = NULL; - dev_set_name(&vpe_device, "vpe_sp"); - vpe_device.devt = MKDEV(major, VPE_MODULE_MINOR); - err = device_add(&vpe_device); - if (err) { - pr_err("Adding vpe_device failed\n"); - goto out_class; - } - - t = alloc_tc(aprp_cpu_index()); - if (!t) { - pr_warn("VPE: unable to allocate TC\n"); - err = -ENOMEM; - goto out_dev; - } - - /* VPE */ - v = alloc_vpe(aprp_cpu_index()); - if (v == NULL) { - pr_warn("VPE: unable to allocate VPE\n"); - kfree(t); - err = -ENOMEM; - goto out_dev; - } - - v->ntcs = 1; - - /* add the tc to the list of this vpe's tc's. */ - list_add(&t->tc, &v->tc); - - /* TC */ - t->pvpe = v; /* set the parent vpe */ - - return 0; - -out_dev: - device_del(&vpe_device); - -out_class: - put_device(&vpe_device); - class_unregister(&vpe_class); - -out_chrdev: - unregister_chrdev(major, VPE_MODULE_NAME); - - return err; -} - -void __exit vpe_module_exit(void) -{ - struct vpe *v, *n; - - device_unregister(&vpe_device); - class_unregister(&vpe_class); - unregister_chrdev(major, VPE_MODULE_NAME); - - /* No locking needed here */ - list_for_each_entry_safe(v, n, &vpecontrol.vpe_list, list) - if (v->state != VPE_STATE_UNUSED) - release_vpe(v); -} |