1 // SPDX-License-Identifier: GPL-2.0
14 #include <linux/io-64-nonatomic-lo-hi.h>
36 	return !!(ivdev->quirks & VSEC_QUIRK_EARLY_HW);  in intel_pmt_is_early_client_hw()
47 		return -EFAULT;  in pmt_memcpy64_fromio()
66 	if (cb && cb->read_telem)  in pmt_telem_read_mmio()
67 		return cb->read_telem(pdev, guid, buf, off, count);  in pmt_telem_read_mmio()
72 		/* PUNIT on SPR only supports aligned 64-bit read */  in pmt_telem_read_mmio()
94 		return -EINVAL;  in intel_pmt_read()
96 	if (off >= entry->size)  in intel_pmt_read()
99 	if (count > entry->size - off)  in intel_pmt_read()
100 		count = entry->size - off;  in intel_pmt_read()
102 	count = pmt_telem_read_mmio(entry->pcidev, entry->cb, entry->header.guid, buf,  in intel_pmt_read()
103 				    entry->base, off, count);  in intel_pmt_read()
115 	unsigned long vsize = vma->vm_end - vma->vm_start;  in intel_pmt_mmap()
117 	unsigned long phys = entry->base_addr;  in intel_pmt_mmap()
121 	if (vma->vm_flags & (VM_WRITE | VM_MAYWRITE))  in intel_pmt_mmap()
122 		return -EROFS;  in intel_pmt_mmap()
124 	psize = (PFN_UP(entry->base_addr + entry->size) - pfn) * PAGE_SIZE;  in intel_pmt_mmap()
127 		return -EINVAL;  in intel_pmt_mmap()
130 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);  in intel_pmt_mmap()
131 	if (io_remap_pfn_range(vma, vma->vm_start, pfn,  in intel_pmt_mmap()
132 		vsize, vma->vm_page_prot))  in intel_pmt_mmap()
133 		return -EAGAIN;  in intel_pmt_mmap()
143 	return sprintf(buf, "0x%x\n", entry->guid);  in guid_show()
152 	return sprintf(buf, "%zu\n", entry->size);  in size_show()
161 	return sprintf(buf, "%lu\n", offset_in_page(entry->base_addr));  in offset_show()
176 	struct auxiliary_device *auxdev = to_auxiliary_dev(dev->parent);  in intel_pmt_attr_visible()
183 	if (ivdev->cap_id == ilog2(VSEC_CAP_DISCOVERY))  in intel_pmt_attr_visible()
186 	return attr->mode;  in intel_pmt_attr_visible()
211 	struct pci_dev *pci_dev = ivdev->pcidev;  in intel_pmt_populate_entry()
212 	struct device *dev = &ivdev->auxdev.dev;  in intel_pmt_populate_entry()
213 	struct intel_pmt_header *header = &entry->header;  in intel_pmt_populate_entry()
219 	 * For non-local access types the lower 3 bits of base offset  in intel_pmt_populate_entry()
223 	bir = GET_BIR(header->base_offset);  in intel_pmt_populate_entry()
225 	/* Local access and BARID only for now */  in intel_pmt_populate_entry()
226 	switch (header->access_type) {  in intel_pmt_populate_entry()
230 				"Unsupported BAR index %d for access type %d\n",  in intel_pmt_populate_entry()
231 				bir, header->access_type);  in intel_pmt_populate_entry()
232 			return -EINVAL;  in intel_pmt_populate_entry()
238 		entry->base_addr = disc_res->end + 1 + header->base_offset;  in intel_pmt_populate_entry()
251 			entry->base_addr = 0;  in intel_pmt_populate_entry()
253 				if (disc_res->start >= pci_resource_start(pci_dev, i) &&  in intel_pmt_populate_entry()
254 				   (disc_res->start <= pci_resource_end(pci_dev, i))) {  in intel_pmt_populate_entry()
255 					entry->base_addr = pci_resource_start(pci_dev, i) +  in intel_pmt_populate_entry()
256 							   header->base_offset;  in intel_pmt_populate_entry()
259 			if (!entry->base_addr)  in intel_pmt_populate_entry()
260 				return -EINVAL;  in intel_pmt_populate_entry()
266 		if (ivdev->base_addr) {  in intel_pmt_populate_entry()
267 			entry->base_addr = ivdev->base_addr +  in intel_pmt_populate_entry()
268 				   GET_ADDRESS(header->base_offset);  in intel_pmt_populate_entry()
277 		entry->base_addr = pci_resource_start(pci_dev, bir) +  in intel_pmt_populate_entry()
278 				   GET_ADDRESS(header->base_offset);  in intel_pmt_populate_entry()
281 		dev_err(dev, "Unsupported access type %d\n",  in intel_pmt_populate_entry()
282 			header->access_type);  in intel_pmt_populate_entry()
283 		return -EINVAL;  in intel_pmt_populate_entry()
286 	entry->pcidev = pci_dev;  in intel_pmt_populate_entry()
287 	entry->guid = header->guid;  in intel_pmt_populate_entry()
288 	entry->size = header->size;  in intel_pmt_populate_entry()
289 	entry->cb = ivdev->priv_data;  in intel_pmt_populate_entry()
295 				  struct intel_pmt_namespace *ns,  in intel_pmt_dev_register()  argument
303 	ret = xa_alloc(ns->xa, &entry->devid, entry, PMT_XA_LIMIT, GFP_KERNEL);  in intel_pmt_dev_register()
308 			    "%s%d", ns->name, entry->devid);  in intel_pmt_dev_register()
312 			ns->name, entry->devid);  in intel_pmt_dev_register()
317 	entry->kobj = &dev->kobj;  in intel_pmt_dev_register()
319 	if (entry->attr_grp) {  in intel_pmt_dev_register()
320 		ret = sysfs_create_group(entry->kobj, entry->attr_grp);  in intel_pmt_dev_register()
326 	if (!entry->size)  in intel_pmt_dev_register()
329 	res.start = entry->base_addr;  in intel_pmt_dev_register()
330 	res.end = res.start + entry->size - 1;  in intel_pmt_dev_register()
333 	entry->base = devm_ioremap_resource(dev, &res);  in intel_pmt_dev_register()
334 	if (IS_ERR(entry->base)) {  in intel_pmt_dev_register()
335 		ret = PTR_ERR(entry->base);  in intel_pmt_dev_register()
339 	sysfs_bin_attr_init(&entry->pmt_bin_attr);  in intel_pmt_dev_register()
340 	entry->pmt_bin_attr.attr.name = ns->name;  in intel_pmt_dev_register()
341 	entry->pmt_bin_attr.attr.mode = 0440;  in intel_pmt_dev_register()
342 	entry->pmt_bin_attr.mmap = intel_pmt_mmap;  in intel_pmt_dev_register()
343 	entry->pmt_bin_attr.read = intel_pmt_read;  in intel_pmt_dev_register()
344 	entry->pmt_bin_attr.size = entry->size;  in intel_pmt_dev_register()
346 	ret = sysfs_create_bin_file(&dev->kobj, &entry->pmt_bin_attr);  in intel_pmt_dev_register()
350 	if (ns->pmt_add_endpoint) {  in intel_pmt_dev_register()
351 		ret = ns->pmt_add_endpoint(ivdev, entry);  in intel_pmt_dev_register()
359 	sysfs_remove_bin_file(entry->kobj, &entry->pmt_bin_attr);  in intel_pmt_dev_register()
361 	if (entry->attr_grp)  in intel_pmt_dev_register()
362 		sysfs_remove_group(entry->kobj, entry->attr_grp);  in intel_pmt_dev_register()
366 	xa_erase(ns->xa, entry->devid);  in intel_pmt_dev_register()
371 int intel_pmt_dev_create(struct intel_pmt_entry *entry, struct intel_pmt_namespace *ns,  in intel_pmt_dev_create()  argument
374 	struct device *dev = &intel_vsec_dev->auxdev.dev;  in intel_pmt_dev_create()
378 	disc_res = &intel_vsec_dev->resource[idx];  in intel_pmt_dev_create()
380 	entry->disc_table = devm_ioremap_resource(dev, disc_res);  in intel_pmt_dev_create()
381 	if (IS_ERR(entry->disc_table))  in intel_pmt_dev_create()
382 		return PTR_ERR(entry->disc_table);  in intel_pmt_dev_create()
384 	ret = ns->pmt_header_decode(entry, dev);  in intel_pmt_dev_create()
392 	return intel_pmt_dev_register(entry, ns, dev);  in intel_pmt_dev_create()
397 			   struct intel_pmt_namespace *ns)  in intel_pmt_dev_destroy()  argument
399 	struct device *dev = kobj_to_dev(entry->kobj);  in intel_pmt_dev_destroy()
401 	if (entry->size)  in intel_pmt_dev_destroy()
402 		sysfs_remove_bin_file(entry->kobj, &entry->pmt_bin_attr);  in intel_pmt_dev_destroy()
404 	if (entry->attr_grp)  in intel_pmt_dev_destroy()
405 		sysfs_remove_group(entry->kobj, entry->attr_grp);  in intel_pmt_dev_destroy()
408 	xa_erase(ns->xa, entry->devid);  in intel_pmt_dev_destroy()