Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Dan J Williams | 1762 | 87.84% | 24 | 63.16% |
Christoph Hellwig | 184 | 9.17% | 7 | 18.42% |
Ross Zwisler | 39 | 1.94% | 1 | 2.63% |
Michal Suchanek | 7 | 0.35% | 1 | 2.63% |
Jeff Johnson | 5 | 0.25% | 1 | 2.63% |
Andy Shevchenko | 4 | 0.20% | 1 | 2.63% |
Logan Gunthorpe | 2 | 0.10% | 1 | 2.63% |
Thomas Gleixner | 2 | 0.10% | 1 | 2.63% |
Sajjan, Vikas C | 1 | 0.05% | 1 | 2.63% |
Total | 2006 | 38 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright(c) 2013-2015 Intel Corporation. All rights reserved. */ #include <linux/memremap.h> #include <linux/rculist.h> #include <linux/export.h> #include <linux/ioport.h> #include <linux/module.h> #include <linux/types.h> #include <linux/pfn_t.h> #include <linux/acpi.h> #include <linux/io.h> #include <linux/mm.h> #include "nfit_test.h" static LIST_HEAD(iomap_head); static struct iomap_ops { nfit_test_lookup_fn nfit_test_lookup; nfit_test_evaluate_dsm_fn evaluate_dsm; struct list_head list; } iomap_ops = { .list = LIST_HEAD_INIT(iomap_ops.list), }; void nfit_test_setup(nfit_test_lookup_fn lookup, nfit_test_evaluate_dsm_fn evaluate) { iomap_ops.nfit_test_lookup = lookup; iomap_ops.evaluate_dsm = evaluate; list_add_rcu(&iomap_ops.list, &iomap_head); } EXPORT_SYMBOL(nfit_test_setup); void nfit_test_teardown(void) { list_del_rcu(&iomap_ops.list); synchronize_rcu(); } EXPORT_SYMBOL(nfit_test_teardown); static struct nfit_test_resource *__get_nfit_res(resource_size_t resource) { struct iomap_ops *ops; ops = list_first_or_null_rcu(&iomap_head, typeof(*ops), list); if (ops) return ops->nfit_test_lookup(resource); return NULL; } struct nfit_test_resource *get_nfit_res(resource_size_t resource) { struct nfit_test_resource *res; rcu_read_lock(); res = __get_nfit_res(resource); rcu_read_unlock(); return res; } EXPORT_SYMBOL(get_nfit_res); #define __nfit_test_ioremap(offset, size, fallback_fn) ({ \ struct nfit_test_resource *nfit_res = get_nfit_res(offset); \ nfit_res ? \ (void __iomem *) nfit_res->buf + (offset) \ - nfit_res->res.start \ : \ fallback_fn((offset), (size)) ; \ }) void __iomem *__wrap_devm_ioremap(struct device *dev, resource_size_t offset, unsigned long size) { struct nfit_test_resource *nfit_res = get_nfit_res(offset); if (nfit_res) return (void __iomem *) nfit_res->buf + offset - nfit_res->res.start; return devm_ioremap(dev, offset, size); } EXPORT_SYMBOL(__wrap_devm_ioremap); void *__wrap_devm_memremap(struct device *dev, resource_size_t offset, size_t size, unsigned long flags) { struct nfit_test_resource *nfit_res = get_nfit_res(offset); if (nfit_res) return nfit_res->buf + offset - nfit_res->res.start; return devm_memremap(dev, offset, size, flags); } EXPORT_SYMBOL(__wrap_devm_memremap); static void nfit_test_kill(void *_pgmap) { struct dev_pagemap *pgmap = _pgmap; WARN_ON(!pgmap); percpu_ref_kill(&pgmap->ref); wait_for_completion(&pgmap->done); percpu_ref_exit(&pgmap->ref); } static void dev_pagemap_percpu_release(struct percpu_ref *ref) { struct dev_pagemap *pgmap = container_of(ref, struct dev_pagemap, ref); complete(&pgmap->done); } void *__wrap_devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap) { int error; resource_size_t offset = pgmap->range.start; struct nfit_test_resource *nfit_res = get_nfit_res(offset); if (!nfit_res) return devm_memremap_pages(dev, pgmap); init_completion(&pgmap->done); error = percpu_ref_init(&pgmap->ref, dev_pagemap_percpu_release, 0, GFP_KERNEL); if (error) return ERR_PTR(error); error = devm_add_action_or_reset(dev, nfit_test_kill, pgmap); if (error) return ERR_PTR(error); return nfit_res->buf + offset - nfit_res->res.start; } EXPORT_SYMBOL_GPL(__wrap_devm_memremap_pages); pfn_t __wrap_phys_to_pfn_t(phys_addr_t addr, unsigned long flags) { struct nfit_test_resource *nfit_res = get_nfit_res(addr); if (nfit_res) flags &= ~PFN_MAP; return phys_to_pfn_t(addr, flags); } EXPORT_SYMBOL(__wrap_phys_to_pfn_t); void *__wrap_memremap(resource_size_t offset, size_t size, unsigned long flags) { struct nfit_test_resource *nfit_res = get_nfit_res(offset); if (nfit_res) return nfit_res->buf + offset - nfit_res->res.start; return memremap(offset, size, flags); } EXPORT_SYMBOL(__wrap_memremap); void __wrap_devm_memunmap(struct device *dev, void *addr) { struct nfit_test_resource *nfit_res = get_nfit_res((long) addr); if (nfit_res) return; return devm_memunmap(dev, addr); } EXPORT_SYMBOL(__wrap_devm_memunmap); void __iomem *__wrap_ioremap(resource_size_t offset, unsigned long size) { return __nfit_test_ioremap(offset, size, ioremap); } EXPORT_SYMBOL(__wrap_ioremap); void __iomem *__wrap_ioremap_wc(resource_size_t offset, unsigned long size) { return __nfit_test_ioremap(offset, size, ioremap_wc); } EXPORT_SYMBOL(__wrap_ioremap_wc); void __wrap_iounmap(volatile void __iomem *addr) { struct nfit_test_resource *nfit_res = get_nfit_res((long) addr); if (nfit_res) return; return iounmap(addr); } EXPORT_SYMBOL(__wrap_iounmap); void __wrap_memunmap(void *addr) { struct nfit_test_resource *nfit_res = get_nfit_res((long) addr); if (nfit_res) return; return memunmap(addr); } EXPORT_SYMBOL(__wrap_memunmap); static bool nfit_test_release_region(struct device *dev, struct resource *parent, resource_size_t start, resource_size_t n); static void nfit_devres_release(struct device *dev, void *data) { struct resource *res = *((struct resource **) data); WARN_ON(!nfit_test_release_region(NULL, &iomem_resource, res->start, resource_size(res))); } static int match(struct device *dev, void *__res, void *match_data) { struct resource *res = *((struct resource **) __res); resource_size_t start = *((resource_size_t *) match_data); return res->start == start; } static bool nfit_test_release_region(struct device *dev, struct resource *parent, resource_size_t start, resource_size_t n) { if (parent == &iomem_resource) { struct nfit_test_resource *nfit_res = get_nfit_res(start); if (nfit_res) { struct nfit_test_request *req; struct resource *res = NULL; if (dev) { devres_release(dev, nfit_devres_release, match, &start); return true; } spin_lock(&nfit_res->lock); list_for_each_entry(req, &nfit_res->requests, list) if (req->res.start == start) { res = &req->res; list_del(&req->list); break; } spin_unlock(&nfit_res->lock); WARN(!res || resource_size(res) != n, "%s: start: %llx n: %llx mismatch: %pr\n", __func__, start, n, res); if (res) kfree(req); return true; } } return false; } static struct resource *nfit_test_request_region(struct device *dev, struct resource *parent, resource_size_t start, resource_size_t n, const char *name, int flags) { struct nfit_test_resource *nfit_res; if (parent == &iomem_resource) { nfit_res = get_nfit_res(start); if (nfit_res) { struct nfit_test_request *req; struct resource *res = NULL; if (start + n > nfit_res->res.start + resource_size(&nfit_res->res)) { pr_debug("%s: start: %llx n: %llx overflow: %pr\n", __func__, start, n, &nfit_res->res); return NULL; } spin_lock(&nfit_res->lock); list_for_each_entry(req, &nfit_res->requests, list) if (start == req->res.start) { res = &req->res; break; } spin_unlock(&nfit_res->lock); if (res) { WARN(1, "%pr already busy\n", res); return NULL; } req = kzalloc(sizeof(*req), GFP_KERNEL); if (!req) return NULL; INIT_LIST_HEAD(&req->list); res = &req->res; res->start = start; res->end = start + n - 1; res->name = name; res->flags = resource_type(parent); res->flags |= IORESOURCE_BUSY | flags; spin_lock(&nfit_res->lock); list_add(&req->list, &nfit_res->requests); spin_unlock(&nfit_res->lock); if (dev) { struct resource **d; d = devres_alloc(nfit_devres_release, sizeof(struct resource *), GFP_KERNEL); if (!d) return NULL; *d = res; devres_add(dev, d); } pr_debug("%s: %pr\n", __func__, res); return res; } } if (dev) return __devm_request_region(dev, parent, start, n, name); return __request_region(parent, start, n, name, flags); } struct resource *__wrap___request_region(struct resource *parent, resource_size_t start, resource_size_t n, const char *name, int flags) { return nfit_test_request_region(NULL, parent, start, n, name, flags); } EXPORT_SYMBOL(__wrap___request_region); int __wrap_insert_resource(struct resource *parent, struct resource *res) { if (get_nfit_res(res->start)) return 0; return insert_resource(parent, res); } EXPORT_SYMBOL(__wrap_insert_resource); int __wrap_remove_resource(struct resource *res) { if (get_nfit_res(res->start)) return 0; return remove_resource(res); } EXPORT_SYMBOL(__wrap_remove_resource); struct resource *__wrap___devm_request_region(struct device *dev, struct resource *parent, resource_size_t start, resource_size_t n, const char *name) { if (!dev) return NULL; return nfit_test_request_region(dev, parent, start, n, name, 0); } EXPORT_SYMBOL(__wrap___devm_request_region); void __wrap___release_region(struct resource *parent, resource_size_t start, resource_size_t n) { if (!nfit_test_release_region(NULL, parent, start, n)) __release_region(parent, start, n); } EXPORT_SYMBOL(__wrap___release_region); void __wrap___devm_release_region(struct device *dev, struct resource *parent, resource_size_t start, resource_size_t n) { if (!nfit_test_release_region(dev, parent, start, n)) __devm_release_region(dev, parent, start, n); } EXPORT_SYMBOL(__wrap___devm_release_region); acpi_status __wrap_acpi_evaluate_object(acpi_handle handle, acpi_string path, struct acpi_object_list *p, struct acpi_buffer *buf) { struct nfit_test_resource *nfit_res = get_nfit_res((long) handle); union acpi_object **obj; if (!nfit_res || strcmp(path, "_FIT") || !buf) return acpi_evaluate_object(handle, path, p, buf); obj = nfit_res->buf; buf->length = sizeof(union acpi_object); buf->pointer = *obj; return AE_OK; } EXPORT_SYMBOL(__wrap_acpi_evaluate_object); union acpi_object * __wrap_acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 func, union acpi_object *argv4) { union acpi_object *obj = ERR_PTR(-ENXIO); struct iomap_ops *ops; rcu_read_lock(); ops = list_first_or_null_rcu(&iomap_head, typeof(*ops), list); if (ops) obj = ops->evaluate_dsm(handle, guid, rev, func, argv4); rcu_read_unlock(); if (IS_ERR(obj)) return acpi_evaluate_dsm(handle, guid, rev, func, argv4); return obj; } EXPORT_SYMBOL(__wrap_acpi_evaluate_dsm); MODULE_DESCRIPTION("NVDIMM unit test"); MODULE_LICENSE("GPL v2");
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