diag.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2/*
  3 * s390 diagnose functions
  4 *
  5 * Copyright IBM Corp. 2007
  6 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
  7 */
  8
  9#ifndef _ASM_S390_DIAG_H
 10#define _ASM_S390_DIAG_H
 11
 12#include <linux/if_ether.h>
 13#include <linux/percpu.h>
 14#include <asm/asm-extable.h>
 15#include <asm/sclp.h>
 16#include <asm/cio.h>
 17
 18enum diag_stat_enum {
 19	DIAG_STAT_X008,
 20	DIAG_STAT_X00C,
 21	DIAG_STAT_X010,
 22	DIAG_STAT_X014,
 23	DIAG_STAT_X044,
 24	DIAG_STAT_X064,
 25	DIAG_STAT_X08C,
 26	DIAG_STAT_X09C,
 27	DIAG_STAT_X0DC,
 28	DIAG_STAT_X204,
 29	DIAG_STAT_X210,
 30	DIAG_STAT_X224,
 31	DIAG_STAT_X250,
 32	DIAG_STAT_X258,
 33	DIAG_STAT_X26C,
 34	DIAG_STAT_X288,
 35	DIAG_STAT_X2C4,
 36	DIAG_STAT_X2FC,
 37	DIAG_STAT_X304,
 38	DIAG_STAT_X308,
 39	DIAG_STAT_X310,
 40	DIAG_STAT_X318,
 41	DIAG_STAT_X320,
 42	DIAG_STAT_X324,
 43	DIAG_STAT_X49C,
 44	DIAG_STAT_X500,
 45	NR_DIAG_STAT
 46};
 47
 48void diag_stat_inc(enum diag_stat_enum nr);
 49void diag_stat_inc_norecursion(enum diag_stat_enum nr);
 50
 51struct hypfs_diag0c_entry;
 52
 53/*
 54 * Diagnose 0c: Pseudo Timer
 55 */
 56void diag0c(struct hypfs_diag0c_entry *data);
 57
 58/*
 59 * Diagnose 10: Release page range
 60 */
 61static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn)
 62{
 63	unsigned long start_addr, end_addr;
 64
 65	start_addr = pfn_to_phys(start_pfn);
 66	end_addr = pfn_to_phys(start_pfn + num_pfn - 1);
 67
 68	diag_stat_inc(DIAG_STAT_X010);
 69	asm_inline volatile(
 70		"0:	diag	%0,%1,0x10\n"
 71		"1:	nopr	%%r7\n"
 72		EX_TABLE(0b, 1b)
 73		EX_TABLE(1b, 1b)
 74		: : "a" (start_addr), "a" (end_addr));
 75}
 76
 77/*
 78 * Diagnose 14: Input spool file manipulation
 79 */
 80extern int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode);
 81
 82/*
 83 * Diagnose 210: Get information about a virtual device
 84 */
 85struct diag210 {
 86	u16 vrdcdvno;	/* device number (input) */
 87	u16 vrdclen;	/* data block length (input) */
 88	u8 vrdcvcla;	/* virtual device class (output) */
 89	u8 vrdcvtyp;	/* virtual device type (output) */
 90	u8 vrdcvsta;	/* virtual device status (output) */
 91	u8 vrdcvfla;	/* virtual device flags (output) */
 92	u8 vrdcrccl;	/* real device class (output) */
 93	u8 vrdccrty;	/* real device type (output) */
 94	u8 vrdccrmd;	/* real device model (output) */
 95	u8 vrdccrft;	/* real device feature (output) */
 96} __packed __aligned(4);
 97
 98extern int diag210(struct diag210 *addr);
 99
100struct diag8c {
101	u8 flags;
102	u8 num_partitions;
103	u16 width;
104	u16 height;
105	u8 data[];
106} __packed __aligned(4);
107
108extern int diag8c(struct diag8c *out, struct ccw_dev_id *devno);
109
110/* bit is set in flags, when physical cpu info is included in diag 204 data */
111#define DIAG204_LPAR_PHYS_FLG 0x80
112#define DIAG204_LPAR_NAME_LEN 8		/* lpar name len in diag 204 data */
113#define DIAG204_CPU_NAME_LEN 16		/* type name len of cpus in diag224 name table */
114
115/* diag 204 subcodes */
116enum diag204_sc {
117	DIAG204_SUBC_STIB4 = 4,
118	DIAG204_SUBC_RSI = 5,
119	DIAG204_SUBC_STIB6 = 6,
120	DIAG204_SUBC_STIB7 = 7
121};
122
123#define DIAG204_SUBCODE_MASK 0xffff
124#define DIAG204_BIF_BIT 0x80000000
125#define DIAG204_BUSY_WAIT (HZ / 10)
126
127/* The two available diag 204 data formats */
128enum diag204_format {
129	DIAG204_INFO_SIMPLE = 0,
130	DIAG204_INFO_EXT = 0x00010000
131};
132
133enum diag204_cpu_flags {
134	DIAG204_CPU_ONLINE = 0x20,
135	DIAG204_CPU_CAPPED = 0x40,
136};
137
138struct diag204_info_blk_hdr {
139	__u8  npar;
140	__u8  flags;
141	__u16 tslice;
142	__u16 phys_cpus;
143	__u16 this_part;
144	__u64 curtod;
145} __packed;
146
147struct diag204_x_info_blk_hdr {
148	__u8  npar;
149	__u8  flags;
150	__u16 tslice;
151	__u16 phys_cpus;
152	__u16 this_part;
153	__u64 curtod1;
154	__u64 curtod2;
155	char reserved[40];
156} __packed;
157
158struct diag204_part_hdr {
159	__u8 pn;
160	__u8 cpus;
161	char reserved[6];
162	char part_name[DIAG204_LPAR_NAME_LEN];
163} __packed;
164
165struct diag204_x_part_hdr {
166	__u8  pn;
167	__u8  cpus;
168	__u8  rcpus;
169	__u8  pflag;
170	__u32 mlu;
171	char  part_name[DIAG204_LPAR_NAME_LEN];
172	char  lpc_name[8];
173	char  os_name[8];
174	__u64 online_cs;
175	__u64 online_es;
176	__u8  upid;
177	__u8  reserved:3;
178	__u8  mtid:5;
179	char  reserved1[2];
180	__u32 group_mlu;
181	char  group_name[8];
182	char  hardware_group_name[8];
183	char  reserved2[24];
184} __packed;
185
186struct diag204_cpu_info {
187	__u16 cpu_addr;
188	char  reserved1[2];
189	__u8  ctidx;
190	__u8  cflag;
191	__u16 weight;
192	__u64 acc_time;
193	__u64 lp_time;
194} __packed;
195
196struct diag204_x_cpu_info {
197	__u16 cpu_addr;
198	char  reserved1[2];
199	__u8  ctidx;
200	__u8  cflag;
201	__u16 weight;
202	__u64 acc_time;
203	__u64 lp_time;
204	__u16 min_weight;
205	__u16 cur_weight;
206	__u16 max_weight;
207	char  reseved2[2];
208	__u64 online_time;
209	__u64 wait_time;
210	__u32 pma_weight;
211	__u32 polar_weight;
212	__u32 cpu_type_cap;
213	__u32 group_cpu_type_cap;
214	char  reserved3[32];
215} __packed;
216
217struct diag204_phys_hdr {
218	char reserved1[1];
219	__u8 cpus;
220	char reserved2[6];
221	char mgm_name[8];
222} __packed;
223
224struct diag204_x_phys_hdr {
225	char reserved1[1];
226	__u8 cpus;
227	char reserved2[6];
228	char mgm_name[8];
229	char reserved3[80];
230} __packed;
231
232struct diag204_phys_cpu {
233	__u16 cpu_addr;
234	char  reserved1[2];
235	__u8  ctidx;
236	char  reserved2[3];
237	__u64 mgm_time;
238	char  reserved3[8];
239} __packed;
240
241struct diag204_x_phys_cpu {
242	__u16 cpu_addr;
243	char  reserved1[2];
244	__u8  ctidx;
245	char  reserved2[1];
246	__u16 weight;
247	__u64 mgm_time;
248	char  reserved3[80];
249} __packed;
250
251struct diag204_x_part_block {
252	struct diag204_x_part_hdr hdr;
253	struct diag204_x_cpu_info cpus[];
254} __packed;
255
256struct diag204_x_phys_block {
257	struct diag204_x_phys_hdr hdr;
258	struct diag204_x_phys_cpu cpus[];
259} __packed;
260
261enum diag26c_sc {
262	DIAG26C_PORT_VNIC    = 0x00000024,
263	DIAG26C_MAC_SERVICES = 0x00000030
264};
265
266enum diag26c_version {
267	DIAG26C_VERSION2	 = 0x00000002,	/* z/VM 5.4.0 */
268	DIAG26C_VERSION6_VM65918 = 0x00020006	/* z/VM 6.4.0 + VM65918 */
269};
270
271#define DIAG26C_VNIC_INFO	0x0002
272struct diag26c_vnic_req {
273	u32	resp_buf_len;
274	u32	resp_version;
275	u16	req_format;
276	u16	vlan_id;
277	u64	sys_name;
278	u8	res[2];
279	u16	devno;
280} __packed __aligned(8);
281
282#define VNIC_INFO_PROT_L3	1
283#define VNIC_INFO_PROT_L2	2
284/* Note: this is the bare minimum, use it for uninitialized VNICs only. */
285struct diag26c_vnic_resp {
286	u32	version;
287	u32	entry_cnt;
288	/* VNIC info: */
289	u32	next_entry;
290	u64	owner;
291	u16	devno;
292	u8	status;
293	u8	type;
294	u64	lan_owner;
295	u64	lan_name;
296	u64	port_name;
297	u8	port_type;
298	u8	ext_status:6;
299	u8	protocol:2;
300	u16	base_devno;
301	u32	port_num;
302	u32	ifindex;
303	u32	maxinfo;
304	u32	dev_count;
305	/* 3x device info: */
306	u8	dev_info1[28];
307	u8	dev_info2[28];
308	u8	dev_info3[28];
309} __packed __aligned(8);
310
311#define DIAG26C_GET_MAC	0x0000
312struct diag26c_mac_req {
313	u32	resp_buf_len;
314	u32	resp_version;
315	u16	op_code;
316	u16	devno;
317	u8	res[4];
318};
319
320struct diag26c_mac_resp {
321	u32	version;
322	u8	mac[ETH_ALEN];
323	u8	res[2];
324} __aligned(8);
325
326#define CPNC_LINUX		0x4
327union diag318_info {
328	unsigned long val;
329	struct {
330		unsigned long cpnc : 8;
331		unsigned long cpvc : 56;
332	};
333};
334
335static inline bool diag204_has_bif(void)
336{
337	return sclp.has_diag204_bif;
338}
339
340int diag204(unsigned long subcode, unsigned long size, void *addr);
341int diag224(void *ptr);
342int diag26c(void *req, void *resp, enum diag26c_sc subcode);
343
344struct hypfs_diag0c_entry;
345
346/*
347 * This structure must contain only pointers/references into
348 * the AMODE31 text section.
349 */
350struct diag_ops {
351	int (*diag210)(struct diag210 *addr);
352	int (*diag26c)(unsigned long rx, unsigned long rx1, enum diag26c_sc subcode);
353	int (*diag14)(unsigned long rx, unsigned long ry1, unsigned long subcode);
354	int (*diag8c)(struct diag8c *addr, struct ccw_dev_id *devno, size_t len);
355	void (*diag0c)(unsigned long rx);
356	void (*diag308_reset)(void);
357};
358
359extern struct diag_ops diag_amode31_ops;
360extern struct diag210 *__diag210_tmp_amode31;
361
362int _diag210_amode31(struct diag210 *addr);
363int _diag26c_amode31(unsigned long rx, unsigned long rx1, enum diag26c_sc subcode);
364int _diag14_amode31(unsigned long rx, unsigned long ry1, unsigned long subcode);
365void _diag0c_amode31(unsigned long rx);
366void _diag308_reset_amode31(void);
367int _diag8c_amode31(struct diag8c *addr, struct ccw_dev_id *devno, size_t len);
368
369/* diag 49c subcodes */
370enum diag49c_sc {
371	DIAG49C_SUBC_ACK = 0,
372	DIAG49C_SUBC_REG = 1
373};
374
375int diag49c(unsigned long subcode);
376
377#endif /* _ASM_S390_DIAG_H */