1 // SPDX-License-Identifier: GPL-2.0
3  *    Hypervisor filesystem for Linux on s390. Diag 204 and 224
19 #include <asm/diag.h>
27 static char *diag224_cpu_names;			/* diag 224 name table */
29 static enum diag204_format diag204_info_type;	/* used diag 204 data format */
38  * DIAG 204 member access functions.
40  * Since we have two different diag 204 data formats for old and new s390
58 		return ((struct diag204_info_blk_hdr *)hdr)->npar;  in info_blk_hdr__npar()
60 		return ((struct diag204_x_info_blk_hdr *)hdr)->npar;  in info_blk_hdr__npar()
66 		return ((struct diag204_info_blk_hdr *)hdr)->flags;  in info_blk_hdr__flags()
68 		return ((struct diag204_x_info_blk_hdr *)hdr)->flags;  in info_blk_hdr__flags()
74 		return ((struct diag204_info_blk_hdr *)hdr)->phys_cpus;  in info_blk_hdr__pcpus()
76 		return ((struct diag204_x_info_blk_hdr *)hdr)->phys_cpus;  in info_blk_hdr__pcpus()
92 		return ((struct diag204_part_hdr *)hdr)->cpus;  in part_hdr__rcpus()
94 		return ((struct diag204_x_part_hdr *)hdr)->rcpus;  in part_hdr__rcpus()
101 		memcpy(name, ((struct diag204_part_hdr *)hdr)->part_name,  in part_hdr__part_name()
104 		memcpy(name, ((struct diag204_x_part_hdr *)hdr)->part_name,  in part_hdr__part_name()
124 		return ((struct diag204_cpu_info *)hdr)->ctidx;  in cpu_info__ctidx()
126 		return ((struct diag204_x_cpu_info *)hdr)->ctidx;  in cpu_info__ctidx()
132 		return ((struct diag204_cpu_info *)hdr)->cpu_addr;  in cpu_info__cpu_addr()
134 		return ((struct diag204_x_cpu_info *)hdr)->cpu_addr;  in cpu_info__cpu_addr()
140 		return ((struct diag204_cpu_info *)hdr)->acc_time;  in cpu_info__acc_time()
142 		return ((struct diag204_x_cpu_info *)hdr)->acc_time;  in cpu_info__acc_time()
148 		return ((struct diag204_cpu_info *)hdr)->lp_time;  in cpu_info__lp_time()
150 		return ((struct diag204_x_cpu_info *)hdr)->lp_time;  in cpu_info__lp_time()
158 		return ((struct diag204_x_cpu_info *)hdr)->online_time;  in cpu_info__online_time()
174 		return ((struct diag204_phys_hdr *)hdr)->cpus;  in phys_hdr__cpus()
176 		return ((struct diag204_x_phys_hdr *)hdr)->cpus;  in phys_hdr__cpus()
192 		return ((struct diag204_phys_cpu *)hdr)->cpu_addr;  in phys_cpu__cpu_addr()
194 		return ((struct diag204_x_phys_cpu *)hdr)->cpu_addr;  in phys_cpu__cpu_addr()
200 		return ((struct diag204_phys_cpu *)hdr)->mgm_time;  in phys_cpu__mgm_time()
202 		return ((struct diag204_x_phys_cpu *)hdr)->mgm_time;  in phys_cpu__mgm_time()
208 		return ((struct diag204_phys_cpu *)hdr)->ctidx;  in phys_cpu__ctidx()
210 		return ((struct diag204_x_phys_cpu *)hdr)->ctidx;  in phys_cpu__ctidx()
215  * For the old diag subcode 4 with simple data format we have to use real
244 		return ERR_PTR(-ENOMEM);  in diag204_alloc_vbuf()
254 		return ERR_PTR(-ENOMEM);  in diag204_alloc_rbuf()
272 			return ERR_PTR(-ENOSYS);  in diag204_get_buffer()
281  *   - subcode 4   + simple data format (only one page)
282  *   - subcode 4-6 + extended data format
283  *   - subcode 4-7 + extended data format
327 		rc = -ENOSYS;  in diag204_probe()
344 	return rc < 0 ? -ENOSYS : 0;  in diag204_do_store()
369 		return -ENOMEM;  in diag224_get_name_table()
372 		return -EOPNOTSUPP;  in diag224_get_name_table()
394 	u16	version;	/* Version of header */  member
410 	buf_size = PAGE_SIZE * (diag204_buf_pages + 1) + sizeof(d204->hdr);  in dbfs_d204_create()
413 		return -ENOMEM;  in dbfs_d204_create()
414 	d204 = page_align_ptr(base + sizeof(d204->hdr)) - sizeof(d204->hdr);  in dbfs_d204_create()
415 	rc = diag204_do_store(d204->buf, diag204_buf_pages);  in dbfs_d204_create()
420 	d204->hdr.version = DBFS_D204_HDR_VERSION;  in dbfs_d204_create()
421 	d204->hdr.len = PAGE_SIZE * diag204_buf_pages;  in dbfs_d204_create()
422 	d204->hdr.sc = diag204_store_sc;  in dbfs_d204_create()
425 	*size = d204->hdr.len + sizeof(struct dbfs_d204_hdr);  in dbfs_d204_create()
441 		return -ENODATA;  in hypfs_diag_init()
482 			      cpu_info__acc_time(diag204_info_type, cpu_info) -  in hypfs_create_cpu_files()