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[mirror_ubuntu-artful-kernel.git] / include / asm-s390 / qdio.h
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1da177e4 1/*
f30c2269 2 * linux/include/asm-s390/qdio.h
1da177e4
LT		 3 *
4 * Linux for S/390 QDIO base support, Hipersocket base support
5 * version 2
6 *
7 * Copyright 2000,2002 IBM Corporation
8 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
9 *
10 */
11#ifndef __QDIO_H__
12#define __QDIO_H__
13
1da177e4
LT		 14/* note, that most of the typedef's are from ingo. */
15
16#include <linux/interrupt.h>
17#include <asm/cio.h>
18#include <asm/ccwdev.h>
19
20#define QDIO_NAME "qdio "
21
22#ifndef __s390x__
23#define QDIO_32_BIT
24#endif /* __s390x__ */
25
26/**** CONSTANTS, that are relied on without using these symbols *****/
27#define QDIO_MAX_QUEUES_PER_IRQ 32 /* used in width of unsigned int */
28/************************ END of CONSTANTS **************************/
29#define QDIO_MAX_BUFFERS_PER_Q 128 /* must be a power of 2 (%x=&(x-1)*/
30#define QDIO_BUF_ORDER 7 /* 2**this == number of pages used for sbals in 1 q */
31#define QDIO_MAX_ELEMENTS_PER_BUFFER 16
32#define SBAL_SIZE 256
33
34#define QDIO_QETH_QFMT 0
35#define QDIO_ZFCP_QFMT 1
36#define QDIO_IQDIO_QFMT 2
028cf917 37#define QDIO_IQDIO_QFMT_ASYNCH 3
1da177e4
LT		 38
39struct qdio_buffer_element{
40 unsigned int flags;
41 unsigned int length;
42#ifdef QDIO_32_BIT
43 void *reserved;
44#endif /* QDIO_32_BIT */
45 void *addr;
46} __attribute__ ((packed,aligned(16)));
47
48struct qdio_buffer{
49 volatile struct qdio_buffer_element element[16];
50} __attribute__ ((packed,aligned(256)));
51
52
53/* params are: ccw_device, status, qdio_error, siga_error,
54 queue_number, first element processed, number of elements processed,
55 int_parm */
56typedef void qdio_handler_t(struct ccw_device *,unsigned int,unsigned int,
57 unsigned int,unsigned int,int,int,unsigned long);
58
59
60#define QDIO_STATUS_INBOUND_INT 0x01
61#define QDIO_STATUS_OUTBOUND_INT 0x02
62#define QDIO_STATUS_LOOK_FOR_ERROR 0x04
63#define QDIO_STATUS_MORE_THAN_ONE_QDIO_ERROR 0x08
64#define QDIO_STATUS_MORE_THAN_ONE_SIGA_ERROR 0x10
65#define QDIO_STATUS_ACTIVATE_CHECK_CONDITION 0x20
66
67#define QDIO_SIGA_ERROR_ACCESS_EXCEPTION 0x10
68#define QDIO_SIGA_ERROR_B_BIT_SET 0x20
69
70/* for qdio_initialize */
71#define QDIO_INBOUND_0COPY_SBALS 0x01
72#define QDIO_OUTBOUND_0COPY_SBALS 0x02
73#define QDIO_USE_OUTBOUND_PCIS 0x04
74
75/* for qdio_cleanup */
76#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
77#define QDIO_FLAG_CLEANUP_USING_HALT 0x02
78
79struct qdio_initialize {
80 struct ccw_device *cdev;
81 unsigned char q_format;
82 unsigned char adapter_name[8];
83 unsigned int qib_param_field_format; /*adapter dependent*/
84 /* pointer to 128 bytes or NULL, if no param field */
85 unsigned char *qib_param_field; /* adapter dependent */
86 /* pointer to no_queues*128 words of data or NULL */
87 unsigned long *input_slib_elements;
88 unsigned long *output_slib_elements;
89 unsigned int min_input_threshold;
90 unsigned int max_input_threshold;
91 unsigned int min_output_threshold;
92 unsigned int max_output_threshold;
93 unsigned int no_input_qs;
94 unsigned int no_output_qs;
95 qdio_handler_t *input_handler;
96 qdio_handler_t *output_handler;
97 unsigned long int_parm;
98 unsigned long flags;
99 void **input_sbal_addr_array; /* addr of n*128 void ptrs */
100 void **output_sbal_addr_array; /* addr of n*128 void ptrs */
101};
102
103extern int qdio_initialize(struct qdio_initialize *init_data);
104extern int qdio_allocate(struct qdio_initialize *init_data);
105extern int qdio_establish(struct qdio_initialize *init_data);
106
107extern int qdio_activate(struct ccw_device *,int flags);
108
109#define QDIO_STATE_MUST_USE_OUTB_PCI 0x00000001
110#define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */
111#define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_initialize */
112#define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */
113#define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */
114extern unsigned long qdio_get_status(int irq);
115
116
117#define QDIO_FLAG_SYNC_INPUT 0x01
118#define QDIO_FLAG_SYNC_OUTPUT 0x02
119#define QDIO_FLAG_UNDER_INTERRUPT 0x04
120#define QDIO_FLAG_NO_INPUT_INTERRUPT_CONTEXT 0x08 /* no effect on
121 adapter interrupts */
122#define QDIO_FLAG_DONT_SIGA 0x10
123
124extern int do_QDIO(struct ccw_device*, unsigned int flags,
125 unsigned int queue_number,
126 unsigned int qidx,unsigned int count,
127 struct qdio_buffer *buffers);
128
129extern int qdio_synchronize(struct ccw_device*, unsigned int flags,
130 unsigned int queue_number);
131
132extern int qdio_cleanup(struct ccw_device*, int how);
133extern int qdio_shutdown(struct ccw_device*, int how);
134extern int qdio_free(struct ccw_device*);
135
136unsigned char qdio_get_slsb_state(struct ccw_device*, unsigned int flag,
137 unsigned int queue_number,
138 unsigned int qidx);
139
140extern void qdio_init_scrubber(void);
141
142struct qdesfmt0 {
143#ifdef QDIO_32_BIT
144 unsigned long res1; /* reserved */
145#endif /* QDIO_32_BIT */
146 unsigned long sliba; /* storage-list-information-block
147 address */
148#ifdef QDIO_32_BIT
149 unsigned long res2; /* reserved */
150#endif /* QDIO_32_BIT */
151 unsigned long sla; /* storage-list address */
152#ifdef QDIO_32_BIT
153 unsigned long res3; /* reserved */
154#endif /* QDIO_32_BIT */
155 unsigned long slsba; /* storage-list-state-block address */
156 unsigned int res4; /* reserved */
157 unsigned int akey : 4; /* access key for DLIB */
158 unsigned int bkey : 4; /* access key for SL */
159 unsigned int ckey : 4; /* access key for SBALs */
160 unsigned int dkey : 4; /* access key for SLSB */
161 unsigned int res5 : 16; /* reserved */
162} __attribute__ ((packed));
163
164/*
165 * Queue-Description record (QDR)
166 */
167struct qdr {
168 unsigned int qfmt : 8; /* queue format */
169 unsigned int pfmt : 8; /* impl. dep. parameter format */
170 unsigned int res1 : 8; /* reserved */
171 unsigned int ac : 8; /* adapter characteristics */
172 unsigned int res2 : 8; /* reserved */
173 unsigned int iqdcnt : 8; /* input-queue-descriptor count */
174 unsigned int res3 : 8; /* reserved */
175 unsigned int oqdcnt : 8; /* output-queue-descriptor count */
176 unsigned int res4 : 8; /* reserved */
177 unsigned int iqdsz : 8; /* input-queue-descriptor size */
178 unsigned int res5 : 8; /* reserved */
179 unsigned int oqdsz : 8; /* output-queue-descriptor size */
180 unsigned int res6[9]; /* reserved */
181#ifdef QDIO_32_BIT
182 unsigned long res7; /* reserved */
183#endif /* QDIO_32_BIT */
184 unsigned long qiba; /* queue-information-block address */
185 unsigned int res8; /* reserved */
186 unsigned int qkey : 4; /* queue-informatio-block key */
187 unsigned int res9 : 28; /* reserved */
188/* union _qd {*/ /* why this? */
189 struct qdesfmt0 qdf0[126];
190/* } qd;*/
191} __attribute__ ((packed,aligned(4096)));
192
193
194/*
195 * queue information block (QIB)
196 */
8129ee16
FP		 197#define QIB_AC_INBOUND_PCI_SUPPORTED 0x80
198#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40
199#define QIB_RFLAGS_ENABLE_QEBSM 0x80
200
1da177e4
LT		 201struct qib {
202 unsigned int qfmt : 8; /* queue format */
203 unsigned int pfmt : 8; /* impl. dep. parameter format */
8129ee16 204 unsigned int rflags : 8; /* QEBSM */
1da177e4
LT		 205 unsigned int ac : 8; /* adapter characteristics */
206 unsigned int res2; /* reserved */
207#ifdef QDIO_32_BIT
208 unsigned long res3; /* reserved */
209#endif /* QDIO_32_BIT */
210 unsigned long isliba; /* absolute address of 1st
211 input SLIB */
212#ifdef QDIO_32_BIT
213 unsigned long res4; /* reserved */
214#endif /* QDIO_32_BIT */
215 unsigned long osliba; /* absolute address of 1st
216 output SLIB */
217 unsigned int res5; /* reserved */
218 unsigned int res6; /* reserved */
219 unsigned char ebcnam[8]; /* adapter identifier in EBCDIC */
220 unsigned char res7[88]; /* reserved */
221 unsigned char parm[QDIO_MAX_BUFFERS_PER_Q];
222 /* implementation dependent
223 parameters */
224} __attribute__ ((packed,aligned(256)));
225
226
227/*
228 * storage-list-information block element (SLIBE)
229 */
230struct slibe {
231#ifdef QDIO_32_BIT
232 unsigned long res; /* reserved */
233#endif /* QDIO_32_BIT */
234 unsigned long parms; /* implementation dependent
235 parameters */
236};
237
238/*
239 * storage-list-information block (SLIB)
240 */
241struct slib {
242#ifdef QDIO_32_BIT
243 unsigned long res1; /* reserved */
244#endif /* QDIO_32_BIT */
245 unsigned long nsliba; /* next SLIB address (if any) */
246#ifdef QDIO_32_BIT
247 unsigned long res2; /* reserved */
248#endif /* QDIO_32_BIT */
249 unsigned long sla; /* SL address */
250#ifdef QDIO_32_BIT
251 unsigned long res3; /* reserved */
252#endif /* QDIO_32_BIT */
253 unsigned long slsba; /* SLSB address */
254 unsigned char res4[1000]; /* reserved */
255 struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; /* SLIB elements */
256} __attribute__ ((packed,aligned(2048)));
257
258struct sbal_flags {
259 unsigned char res1 : 1; /* reserved */
260 unsigned char last : 1; /* last entry */
261 unsigned char cont : 1; /* contiguous storage */
262 unsigned char res2 : 1; /* reserved */
263 unsigned char frag : 2; /* fragmentation (s.below) */
264 unsigned char res3 : 2; /* reserved */
265} __attribute__ ((packed));
266
267#define SBAL_FLAGS_FIRST_FRAG 0x04000000UL
268#define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL
269#define SBAL_FLAGS_LAST_FRAG 0x0c000000UL
270#define SBAL_FLAGS_LAST_ENTRY 0x40000000UL
271#define SBAL_FLAGS_CONTIGUOUS 0x20000000UL
272
273#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
274
275/* Awesome OpenFCP extensions */
276#define SBAL_FLAGS0_TYPE_STATUS 0x00UL
277#define SBAL_FLAGS0_TYPE_WRITE 0x08UL
278#define SBAL_FLAGS0_TYPE_READ 0x10UL
279#define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL
280#define SBAL_FLAGS0_MORE_SBALS 0x04UL
281#define SBAL_FLAGS0_COMMAND 0x02UL
282#define SBAL_FLAGS0_LAST_SBAL 0x00UL
283#define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND
284#define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS
285#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
286/* Naught of interest beyond this point */
287
288#define SBAL_FLAGS0_PCI 0x40
289struct sbal_sbalf_0 {
290 unsigned char res1 : 1; /* reserved */
291 unsigned char pci : 1; /* PCI indicator */
292 unsigned char cont : 1; /* data continuation */
293 unsigned char sbtype: 2; /* storage-block type (OpenFCP) */
294 unsigned char res2 : 3; /* reserved */
295} __attribute__ ((packed));
296
297struct sbal_sbalf_1 {
298 unsigned char res1 : 4; /* reserved */
299 unsigned char key : 4; /* storage key */
300} __attribute__ ((packed));
301
302struct sbal_sbalf_14 {
303 unsigned char res1 : 4; /* reserved */
304 unsigned char erridx : 4; /* error index */
305} __attribute__ ((packed));
306
307struct sbal_sbalf_15 {
308 unsigned char reason; /* reserved */
309} __attribute__ ((packed));
310
311union sbal_sbalf {
312 struct sbal_sbalf_0 i0;
313 struct sbal_sbalf_1 i1;
314 struct sbal_sbalf_14 i14;
315 struct sbal_sbalf_15 i15;
316 unsigned char value;
317};
318
319struct sbal_element {
320 union {
321 struct sbal_flags bits; /* flags */
322 unsigned char value;
323 } flags;
324 unsigned int res1 : 16; /* reserved */
325 union sbal_sbalf sbalf; /* SBAL flags */
326 unsigned int res2 : 16; /* reserved */
327 unsigned int count : 16; /* data count */
328#ifdef QDIO_32_BIT
329 unsigned long res3; /* reserved */
330#endif /* QDIO_32_BIT */
331 unsigned long addr; /* absolute data address */
332} __attribute__ ((packed,aligned(16)));
333
334/*
335 * strorage-block access-list (SBAL)
336 */
337struct sbal {
338 struct sbal_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
339} __attribute__ ((packed,aligned(256)));
340
341/*
342 * storage-list (SL)
343 */
344struct sl_element {
345#ifdef QDIO_32_BIT
346 unsigned long res; /* reserved */
347#endif /* QDIO_32_BIT */
348 unsigned long sbal; /* absolute SBAL address */
349} __attribute__ ((packed));
350
351struct sl {
352 struct sl_element element[QDIO_MAX_BUFFERS_PER_Q];
353} __attribute__ ((packed,aligned(1024)));
354
355/*
356 * storage-list-state block (SLSB)
357 */
358struct slsb_flags {
359 unsigned char owner : 2; /* SBAL owner */
360 unsigned char type : 1; /* buffer type */
361 unsigned char state : 5; /* processing state */
362} __attribute__ ((packed));
363
364
365struct slsb {
366 union {
367 unsigned char val[QDIO_MAX_BUFFERS_PER_Q];
368 struct slsb_flags flags[QDIO_MAX_BUFFERS_PER_Q];
369 } acc;
370} __attribute__ ((packed,aligned(256)));
371
372/*
373 * SLSB values
374 */
375#define SLSB_OWNER_PROG 1
376#define SLSB_OWNER_CU 2
377
378#define SLSB_TYPE_INPUT 0
379#define SLSB_TYPE_OUTPUT 1
380
381#define SLSB_STATE_NOT_INIT 0
382#define SLSB_STATE_EMPTY 1
383#define SLSB_STATE_PRIMED 2
384#define SLSB_STATE_HALTED 0xe
385#define SLSB_STATE_ERROR 0xf
386
387#define SLSB_P_INPUT_NOT_INIT 0x80
388#define SLSB_P_INPUT_PROCESSING 0x81
389#define SLSB_CU_INPUT_EMPTY 0x41
390#define SLSB_P_INPUT_PRIMED 0x82
391#define SLSB_P_INPUT_HALTED 0x8E
392#define SLSB_P_INPUT_ERROR 0x8F
393
394#define SLSB_P_OUTPUT_NOT_INIT 0xA0
395#define SLSB_P_OUTPUT_EMPTY 0xA1
396#define SLSB_CU_OUTPUT_PRIMED 0x62
397#define SLSB_P_OUTPUT_HALTED 0xAE
398#define SLSB_P_OUTPUT_ERROR 0xAF
399
400#define SLSB_ERROR_DURING_LOOKUP 0xFF
401
402#endif /* __QDIO_H__ */
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