1 // SPDX-License-Identifier: GPL-2.0
12 #include <linux/io-64-nonatomic-lo-hi.h>
34 	return !!(ivdev->quirks & VSEC_QUIRK_EARLY_HW);  in intel_pmt_is_early_client_hw()
45 		return -EFAULT;  in pmt_memcpy64_fromio()
74 		return -EINVAL;  in intel_pmt_read()
76 	if (off >= entry->size)  in intel_pmt_read()
79 	if (count > entry->size - off)  in intel_pmt_read()
80 		count = entry->size - off;  in intel_pmt_read()
82 	if (entry->guid == GUID_SPR_PUNIT)  in intel_pmt_read()
83 		/* PUNIT on SPR only supports aligned 64-bit read */  in intel_pmt_read()
84 		count = pmt_memcpy64_fromio(buf, entry->base + off, count);  in intel_pmt_read()
86 		memcpy_fromio(buf, entry->base + off, count);  in intel_pmt_read()
98 	unsigned long vsize = vma->vm_end - vma->vm_start;  in intel_pmt_mmap()
100 	unsigned long phys = entry->base_addr;  in intel_pmt_mmap()
104 	if (vma->vm_flags & (VM_WRITE | VM_MAYWRITE))  in intel_pmt_mmap()
105 		return -EROFS;  in intel_pmt_mmap()
107 	psize = (PFN_UP(entry->base_addr + entry->size) - pfn) * PAGE_SIZE;  in intel_pmt_mmap()
110 		return -EINVAL;  in intel_pmt_mmap()
113 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);  in intel_pmt_mmap()
114 	if (io_remap_pfn_range(vma, vma->vm_start, pfn,  in intel_pmt_mmap()
115 		vsize, vma->vm_page_prot))  in intel_pmt_mmap()
116 		return -EAGAIN;  in intel_pmt_mmap()
126 	return sprintf(buf, "0x%x\n", entry->guid);  in guid_show()
135 	return sprintf(buf, "%zu\n", entry->size);  in size_show()
144 	return sprintf(buf, "%lu\n", offset_in_page(entry->base_addr));  in offset_show()
165 	struct pci_dev *pci_dev = ivdev->pcidev;  in intel_pmt_populate_entry()
166 	struct device *dev = &ivdev->auxdev.dev;  in intel_pmt_populate_entry()
167 	struct intel_pmt_header *header = &entry->header;  in intel_pmt_populate_entry()
173 	 * For non-local access types the lower 3 bits of base offset  in intel_pmt_populate_entry()
177 	bir = GET_BIR(header->base_offset);  in intel_pmt_populate_entry()
179 	/* Local access and BARID only for now */  in intel_pmt_populate_entry()
180 	switch (header->access_type) {  in intel_pmt_populate_entry()
184 				"Unsupported BAR index %d for access type %d\n",  in intel_pmt_populate_entry()
185 				bir, header->access_type);  in intel_pmt_populate_entry()
186 			return -EINVAL;  in intel_pmt_populate_entry()
192 		entry->base_addr = disc_res->end + 1 + header->base_offset;  in intel_pmt_populate_entry()
205 			entry->base_addr = 0;  in intel_pmt_populate_entry()
207 				if (disc_res->start >= pci_resource_start(pci_dev, i) &&  in intel_pmt_populate_entry()
208 				   (disc_res->start <= pci_resource_end(pci_dev, i))) {  in intel_pmt_populate_entry()
209 					entry->base_addr = pci_resource_start(pci_dev, i) +  in intel_pmt_populate_entry()
210 							   header->base_offset;  in intel_pmt_populate_entry()
213 			if (!entry->base_addr)  in intel_pmt_populate_entry()
214 				return -EINVAL;  in intel_pmt_populate_entry()
220 		if (ivdev->base_addr) {  in intel_pmt_populate_entry()
221 			entry->base_addr = ivdev->base_addr +  in intel_pmt_populate_entry()
222 				   GET_ADDRESS(header->base_offset);  in intel_pmt_populate_entry()
231 		entry->base_addr = pci_resource_start(pci_dev, bir) +  in intel_pmt_populate_entry()
232 				   GET_ADDRESS(header->base_offset);  in intel_pmt_populate_entry()
235 		dev_err(dev, "Unsupported access type %d\n",  in intel_pmt_populate_entry()
236 			header->access_type);  in intel_pmt_populate_entry()
237 		return -EINVAL;  in intel_pmt_populate_entry()
240 	entry->guid = header->guid;  in intel_pmt_populate_entry()
241 	entry->size = header->size;  in intel_pmt_populate_entry()
247 				  struct intel_pmt_namespace *ns,  in intel_pmt_dev_register()  argument
255 	ret = xa_alloc(ns->xa, &entry->devid, entry, PMT_XA_LIMIT, GFP_KERNEL);  in intel_pmt_dev_register()
260 			    "%s%d", ns->name, entry->devid);  in intel_pmt_dev_register()
264 			ns->name, entry->devid);  in intel_pmt_dev_register()
269 	entry->kobj = &dev->kobj;  in intel_pmt_dev_register()
271 	if (ns->attr_grp) {  in intel_pmt_dev_register()
272 		ret = sysfs_create_group(entry->kobj, ns->attr_grp);  in intel_pmt_dev_register()
278 	if (!entry->size)  in intel_pmt_dev_register()
281 	res.start = entry->base_addr;  in intel_pmt_dev_register()
282 	res.end = res.start + entry->size - 1;  in intel_pmt_dev_register()
285 	entry->base = devm_ioremap_resource(dev, &res);  in intel_pmt_dev_register()
286 	if (IS_ERR(entry->base)) {  in intel_pmt_dev_register()
287 		ret = PTR_ERR(entry->base);  in intel_pmt_dev_register()
291 	sysfs_bin_attr_init(&entry->pmt_bin_attr);  in intel_pmt_dev_register()
292 	entry->pmt_bin_attr.attr.name = ns->name;  in intel_pmt_dev_register()
293 	entry->pmt_bin_attr.attr.mode = 0440;  in intel_pmt_dev_register()
294 	entry->pmt_bin_attr.mmap = intel_pmt_mmap;  in intel_pmt_dev_register()
295 	entry->pmt_bin_attr.read = intel_pmt_read;  in intel_pmt_dev_register()
296 	entry->pmt_bin_attr.size = entry->size;  in intel_pmt_dev_register()
298 	ret = sysfs_create_bin_file(&dev->kobj, &entry->pmt_bin_attr);  in intel_pmt_dev_register()
302 	if (ns->pmt_add_endpoint) {  in intel_pmt_dev_register()
303 		ret = ns->pmt_add_endpoint(entry, ivdev->pcidev);  in intel_pmt_dev_register()
311 	sysfs_remove_bin_file(entry->kobj, &entry->pmt_bin_attr);  in intel_pmt_dev_register()
313 	if (ns->attr_grp)  in intel_pmt_dev_register()
314 		sysfs_remove_group(entry->kobj, ns->attr_grp);  in intel_pmt_dev_register()
318 	xa_erase(ns->xa, entry->devid);  in intel_pmt_dev_register()
323 int intel_pmt_dev_create(struct intel_pmt_entry *entry, struct intel_pmt_namespace *ns,  in intel_pmt_dev_create()  argument
326 	struct device *dev = &intel_vsec_dev->auxdev.dev;  in intel_pmt_dev_create()
330 	disc_res = &intel_vsec_dev->resource[idx];  in intel_pmt_dev_create()
332 	entry->disc_table = devm_ioremap_resource(dev, disc_res);  in intel_pmt_dev_create()
333 	if (IS_ERR(entry->disc_table))  in intel_pmt_dev_create()
334 		return PTR_ERR(entry->disc_table);  in intel_pmt_dev_create()
336 	ret = ns->pmt_header_decode(entry, dev);  in intel_pmt_dev_create()
344 	return intel_pmt_dev_register(entry, ns, dev);  in intel_pmt_dev_create()
349 			   struct intel_pmt_namespace *ns)  in intel_pmt_dev_destroy()  argument
351 	struct device *dev = kobj_to_dev(entry->kobj);  in intel_pmt_dev_destroy()
353 	if (entry->size)  in intel_pmt_dev_destroy()
354 		sysfs_remove_bin_file(entry->kobj, &entry->pmt_bin_attr);  in intel_pmt_dev_destroy()
356 	if (ns->attr_grp)  in intel_pmt_dev_destroy()
357 		sysfs_remove_group(entry->kobj, ns->attr_grp);  in intel_pmt_dev_destroy()
360 	xa_erase(ns->xa, entry->devid);  in intel_pmt_dev_destroy()