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Jan Glauber779e6e12008-07-17 17:16:48 +02001/*
2 * linux/drivers/s390/cio/qdio.h
3 *
Jan Glauber3f09bb82009-09-11 10:28:22 +02004 * Copyright 2000,2009 IBM Corp.
Jan Glauber779e6e12008-07-17 17:16:48 +02005 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
6 * Jan Glauber <jang@linux.vnet.ibm.com>
7 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07008#ifndef _CIO_QDIO_H
9#define _CIO_QDIO_H
10
Peter Oberparleiter0b642ed2005-05-01 08:58:58 -070011#include <asm/page.h>
Cornelia Huck9d92a7e2008-07-14 09:59:05 +020012#include <asm/schid.h>
Jan Glauber22f99342008-12-25 13:38:46 +010013#include <asm/debug.h>
Jan Glauber779e6e12008-07-17 17:16:48 +020014#include "chsc.h"
Cornelia Hucka8237fc2006-01-06 00:19:21 -080015
Jan Glauber3a601bf2010-05-17 10:00:17 +020016#define QDIO_BUSY_BIT_PATIENCE (100 << 12) /* 100 microseconds */
17#define QDIO_INPUT_THRESHOLD (500 << 12) /* 500 microseconds */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018
Ursula Braun4bcb3a32008-10-10 21:33:04 +020019/*
20 * if an asynchronous HiperSockets queue runs full, the 10 seconds timer wait
21 * till next initiative to give transmitted skbs back to the stack is too long.
22 * Therefore polling is started in case of multicast queue is filled more
23 * than 50 percent.
24 */
25#define QDIO_IQDIO_POLL_LVL 65 /* HS multicast queue */
26
Linus Torvalds1da177e2005-04-16 15:20:36 -070027enum qdio_irq_states {
28 QDIO_IRQ_STATE_INACTIVE,
29 QDIO_IRQ_STATE_ESTABLISHED,
30 QDIO_IRQ_STATE_ACTIVE,
31 QDIO_IRQ_STATE_STOPPED,
32 QDIO_IRQ_STATE_CLEANUP,
33 QDIO_IRQ_STATE_ERR,
34 NR_QDIO_IRQ_STATES,
35};
36
Jan Glauber779e6e12008-07-17 17:16:48 +020037/* used as intparm in do_IO */
38#define QDIO_DOING_ESTABLISH 1
39#define QDIO_DOING_ACTIVATE 2
40#define QDIO_DOING_CLEANUP 3
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
Jan Glauber779e6e12008-07-17 17:16:48 +020042#define SLSB_STATE_NOT_INIT 0x0
43#define SLSB_STATE_EMPTY 0x1
44#define SLSB_STATE_PRIMED 0x2
45#define SLSB_STATE_HALTED 0xe
46#define SLSB_STATE_ERROR 0xf
47#define SLSB_TYPE_INPUT 0x0
48#define SLSB_TYPE_OUTPUT 0x20
49#define SLSB_OWNER_PROG 0x80
50#define SLSB_OWNER_CU 0x40
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
Jan Glauber779e6e12008-07-17 17:16:48 +020052#define SLSB_P_INPUT_NOT_INIT \
53 (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_NOT_INIT) /* 0x80 */
54#define SLSB_P_INPUT_ACK \
55 (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY) /* 0x81 */
56#define SLSB_CU_INPUT_EMPTY \
57 (SLSB_OWNER_CU | SLSB_TYPE_INPUT | SLSB_STATE_EMPTY) /* 0x41 */
58#define SLSB_P_INPUT_PRIMED \
59 (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_PRIMED) /* 0x82 */
60#define SLSB_P_INPUT_HALTED \
61 (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_HALTED) /* 0x8e */
62#define SLSB_P_INPUT_ERROR \
63 (SLSB_OWNER_PROG | SLSB_TYPE_INPUT | SLSB_STATE_ERROR) /* 0x8f */
64#define SLSB_P_OUTPUT_NOT_INIT \
65 (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_NOT_INIT) /* 0xa0 */
66#define SLSB_P_OUTPUT_EMPTY \
67 (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_EMPTY) /* 0xa1 */
68#define SLSB_CU_OUTPUT_PRIMED \
69 (SLSB_OWNER_CU | SLSB_TYPE_OUTPUT | SLSB_STATE_PRIMED) /* 0x62 */
70#define SLSB_P_OUTPUT_HALTED \
71 (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_HALTED) /* 0xae */
72#define SLSB_P_OUTPUT_ERROR \
73 (SLSB_OWNER_PROG | SLSB_TYPE_OUTPUT | SLSB_STATE_ERROR) /* 0xaf */
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
Jan Glauber779e6e12008-07-17 17:16:48 +020075#define SLSB_ERROR_DURING_LOOKUP 0xff
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
Jan Glauber779e6e12008-07-17 17:16:48 +020077/* additional CIWs returned by extended Sense-ID */
78#define CIW_TYPE_EQUEUE 0x3 /* establish QDIO queues */
79#define CIW_TYPE_AQUEUE 0x4 /* activate QDIO queues */
Linus Torvalds1da177e2005-04-16 15:20:36 -070080
Jan Glauber779e6e12008-07-17 17:16:48 +020081/* flags for st qdio sch data */
82#define CHSC_FLAG_QDIO_CAPABILITY 0x80
83#define CHSC_FLAG_VALIDITY 0x40
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
Jan Glauber779e6e12008-07-17 17:16:48 +020085/* qdio adapter-characteristics-1 flag */
86#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */
87#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */
88#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */
89#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */
90#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */
91#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */
92#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Jan Glauber958c0ba2011-01-05 12:47:52 +010094/* SIGA flags */
95#define QDIO_SIGA_WRITE 0x00
96#define QDIO_SIGA_READ 0x01
97#define QDIO_SIGA_SYNC 0x02
98#define QDIO_SIGA_QEBSM_FLAG 0x80
99
Martin Schwidefsky347a8dc2006-01-06 00:19:28 -0800100#ifdef CONFIG_64BIT
Jan Glauber779e6e12008-07-17 17:16:48 +0200101static inline int do_sqbs(u64 token, unsigned char state, int queue,
102 int *start, int *count)
103{
104 register unsigned long _ccq asm ("0") = *count;
105 register unsigned long _token asm ("1") = token;
106 unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
Frank Pavlic8129ee12006-01-06 00:19:20 -0800107
Jan Glauber779e6e12008-07-17 17:16:48 +0200108 asm volatile(
109 " .insn rsy,0xeb000000008A,%1,0,0(%2)"
110 : "+d" (_ccq), "+d" (_queuestart)
111 : "d" ((unsigned long)state), "d" (_token)
112 : "memory", "cc");
113 *count = _ccq & 0xff;
114 *start = _queuestart & 0xff;
Frank Pavlic8129ee12006-01-06 00:19:20 -0800115
Jan Glauber779e6e12008-07-17 17:16:48 +0200116 return (_ccq >> 32) & 0xff;
Frank Pavlic8129ee12006-01-06 00:19:20 -0800117}
118
Jan Glauber779e6e12008-07-17 17:16:48 +0200119static inline int do_eqbs(u64 token, unsigned char *state, int queue,
Jan Glauber50f769d2008-12-25 13:38:47 +0100120 int *start, int *count, int ack)
Frank Pavlic8129ee12006-01-06 00:19:20 -0800121{
Frank Pavlic8129ee12006-01-06 00:19:20 -0800122 register unsigned long _ccq asm ("0") = *count;
Jan Glauber779e6e12008-07-17 17:16:48 +0200123 register unsigned long _token asm ("1") = token;
Frank Pavlic8129ee12006-01-06 00:19:20 -0800124 unsigned long _queuestart = ((unsigned long)queue << 32) | *start;
Jan Glauber50f769d2008-12-25 13:38:47 +0100125 unsigned long _state = (unsigned long)ack << 63;
Frank Pavlic8129ee12006-01-06 00:19:20 -0800126
Martin Schwidefsky94c12cc2006-09-28 16:56:43 +0200127 asm volatile(
128 " .insn rrf,0xB99c0000,%1,%2,0,0"
129 : "+d" (_ccq), "+d" (_queuestart), "+d" (_state)
Jan Glauber779e6e12008-07-17 17:16:48 +0200130 : "d" (_token)
131 : "memory", "cc");
Frank Pavlic8129ee12006-01-06 00:19:20 -0800132 *count = _ccq & 0xff;
133 *start = _queuestart & 0xff;
134 *state = _state & 0xff;
135
136 return (_ccq >> 32) & 0xff;
Jan Glauber779e6e12008-07-17 17:16:48 +0200137}
Frank Pavlic8129ee12006-01-06 00:19:20 -0800138#else
Jan Glauber779e6e12008-07-17 17:16:48 +0200139static inline int do_sqbs(u64 token, unsigned char state, int queue,
140 int *start, int *count) { return 0; }
141static inline int do_eqbs(u64 token, unsigned char *state, int queue,
Jan Glauber50f769d2008-12-25 13:38:47 +0100142 int *start, int *count, int ack) { return 0; }
Jan Glauber779e6e12008-07-17 17:16:48 +0200143#endif /* CONFIG_64BIT */
Frank Pavlic8129ee12006-01-06 00:19:20 -0800144
Jan Glauber779e6e12008-07-17 17:16:48 +0200145struct qdio_irq;
Frank Pavlic8129ee12006-01-06 00:19:20 -0800146
Jan Glauber779e6e12008-07-17 17:16:48 +0200147struct siga_flag {
148 u8 input:1;
149 u8 output:1;
150 u8 sync:1;
151 u8 no_sync_ti:1;
152 u8 no_sync_out_ti:1;
153 u8 no_sync_out_pci:1;
154 u8:2;
155} __attribute__ ((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
Jan Glauber779e6e12008-07-17 17:16:48 +0200157struct chsc_ssqd_area {
Ursula Braune1776852008-04-17 07:46:22 +0200158 struct chsc_header request;
Jan Glauber779e6e12008-07-17 17:16:48 +0200159 u16:10;
160 u8 ssid:2;
161 u8 fmt:4;
Ursula Braune1776852008-04-17 07:46:22 +0200162 u16 first_sch;
Jan Glauber779e6e12008-07-17 17:16:48 +0200163 u16:16;
Ursula Braune1776852008-04-17 07:46:22 +0200164 u16 last_sch;
Jan Glauber779e6e12008-07-17 17:16:48 +0200165 u32:32;
Ursula Braune1776852008-04-17 07:46:22 +0200166 struct chsc_header response;
Jan Glauber779e6e12008-07-17 17:16:48 +0200167 u32:32;
168 struct qdio_ssqd_desc qdio_ssqd;
169} __attribute__ ((packed));
170
171struct scssc_area {
172 struct chsc_header request;
173 u16 operation_code;
174 u16:16;
175 u32:32;
176 u32:32;
177 u64 summary_indicator_addr;
178 u64 subchannel_indicator_addr;
179 u32 ks:4;
180 u32 kc:4;
181 u32:21;
182 u32 isc:3;
183 u32 word_with_d_bit;
184 u32:32;
185 struct subchannel_id schid;
186 u32 reserved[1004];
187 struct chsc_header response;
188 u32:32;
189} __attribute__ ((packed));
190
Jan Glauber6486cda2010-01-04 09:05:42 +0100191struct qdio_dev_perf_stat {
192 unsigned int adapter_int;
193 unsigned int qdio_int;
194 unsigned int pci_request_int;
195
196 unsigned int tasklet_inbound;
197 unsigned int tasklet_inbound_resched;
198 unsigned int tasklet_inbound_resched2;
199 unsigned int tasklet_outbound;
200
201 unsigned int siga_read;
202 unsigned int siga_write;
203 unsigned int siga_sync;
204
205 unsigned int inbound_call;
206 unsigned int inbound_handler;
207 unsigned int stop_polling;
208 unsigned int inbound_queue_full;
209 unsigned int outbound_call;
210 unsigned int outbound_handler;
Jan Glauber01958432011-01-05 12:47:51 +0100211 unsigned int outbound_queue_full;
Jan Glauber6486cda2010-01-04 09:05:42 +0100212 unsigned int fast_requeue;
213 unsigned int target_full;
214 unsigned int eqbs;
215 unsigned int eqbs_partial;
216 unsigned int sqbs;
217 unsigned int sqbs_partial;
Jan Glauberd36deae2010-09-07 21:14:39 +0000218 unsigned int int_discarded;
Jan Glauber432ac5e2010-02-26 22:37:37 +0100219} ____cacheline_aligned;
Jan Glauber6486cda2010-01-04 09:05:42 +0100220
Jan Glauberd3072972010-02-26 22:37:36 +0100221struct qdio_queue_perf_stat {
222 /*
223 * Sorted into order-2 buckets: 1, 2-3, 4-7, ... 64-127, 128.
224 * Since max. 127 SBALs are scanned reuse entry for 128 as queue full
225 * aka 127 SBALs found.
226 */
227 unsigned int nr_sbals[8];
228 unsigned int nr_sbal_error;
229 unsigned int nr_sbal_nop;
230 unsigned int nr_sbal_total;
231};
232
Jan Glauberd36deae2010-09-07 21:14:39 +0000233enum qdio_queue_irq_states {
234 QDIO_QUEUE_IRQS_DISABLED,
235};
236
Jan Glauber779e6e12008-07-17 17:16:48 +0200237struct qdio_input_q {
238 /* input buffer acknowledgement flag */
239 int polling;
Jan Glaubere85dea02009-03-26 15:24:29 +0100240 /* first ACK'ed buffer */
241 int ack_start;
Jan Glauber50f769d2008-12-25 13:38:47 +0100242 /* how much sbals are acknowledged with qebsm */
243 int ack_count;
Jan Glauber779e6e12008-07-17 17:16:48 +0200244 /* last time of noticing incoming data */
245 u64 timestamp;
Jan Glauberd36deae2010-09-07 21:14:39 +0000246 /* upper-layer polling flag */
247 unsigned long queue_irq_state;
248 /* callback to start upper-layer polling */
249 void (*queue_start_poll) (struct ccw_device *, int, unsigned long);
Ursula Braune1776852008-04-17 07:46:22 +0200250};
251
Jan Glauber779e6e12008-07-17 17:16:48 +0200252struct qdio_output_q {
Jan Glauber779e6e12008-07-17 17:16:48 +0200253 /* PCIs are enabled for the queue */
254 int pci_out_enabled;
Klaus-Dieter Wacker7a0f4752008-10-10 21:33:18 +0200255 /* IQDIO: output multiple buffers (enhanced SIGA) */
256 int use_enh_siga;
Jan Glauber779e6e12008-07-17 17:16:48 +0200257 /* timer to check for more outbound work */
258 struct timer_list timer;
Jan Glauber3d6c76f2011-01-05 12:47:50 +0100259 /* used SBALs before tasklet schedule */
260 int scan_threshold;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
Jan Glauberd3072972010-02-26 22:37:36 +0100263/*
264 * Note on cache alignment: grouped slsb and write mostly data at the beginning
265 * sbal[] is read-only and starts on a new cacheline followed by read mostly.
266 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267struct qdio_q {
Jan Glauber779e6e12008-07-17 17:16:48 +0200268 struct slsb slsb;
Jan Glauberd3072972010-02-26 22:37:36 +0100269
Jan Glauber779e6e12008-07-17 17:16:48 +0200270 union {
271 struct qdio_input_q in;
272 struct qdio_output_q out;
273 } u;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
Jan Glauberd3072972010-02-26 22:37:36 +0100275 /*
276 * inbound: next buffer the program should check for
277 * outbound: next buffer to check if adapter processed it
278 */
279 int first_to_check;
280
281 /* first_to_check of the last time */
282 int last_move;
283
284 /* beginning position for calling the program */
285 int first_to_kick;
286
287 /* number of buffers in use by the adapter */
288 atomic_t nr_buf_used;
289
290 /* error condition during a data transfer */
291 unsigned int qdio_error;
292
293 struct tasklet_struct tasklet;
294 struct qdio_queue_perf_stat q_stats;
295
296 struct qdio_buffer *sbal[QDIO_MAX_BUFFERS_PER_Q] ____cacheline_aligned;
297
Jan Glauber779e6e12008-07-17 17:16:48 +0200298 /* queue number */
299 int nr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300
Jan Glauber779e6e12008-07-17 17:16:48 +0200301 /* bitmask of queue number */
302 int mask;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303
Jan Glauber779e6e12008-07-17 17:16:48 +0200304 /* input or output queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 int is_input_q;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
Jan Glauber779e6e12008-07-17 17:16:48 +0200307 /* list of thinint input queues */
308 struct list_head entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309
Jan Glauber779e6e12008-07-17 17:16:48 +0200310 /* upper-layer program handler */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 qdio_handler_t (*handler);
312
Jan Glauber3f09bb82009-09-11 10:28:22 +0200313 struct dentry *debugfs_q;
Jan Glauberd3072972010-02-26 22:37:36 +0100314 struct qdio_irq *irq_ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 struct sl *sl;
Jan Glauber779e6e12008-07-17 17:16:48 +0200316 /*
Jan Glauber5382fe12010-05-17 10:00:16 +0200317 * A page is allocated under this pointer and used for slib and sl.
318 * slib is 2048 bytes big and sl points to offset PAGE_SIZE / 2.
Jan Glauber779e6e12008-07-17 17:16:48 +0200319 */
320 struct slib *slib;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321} __attribute__ ((aligned(256)));
322
323struct qdio_irq {
Jan Glauber779e6e12008-07-17 17:16:48 +0200324 struct qib qib;
325 u32 *dsci; /* address of device state change indicator */
326 struct ccw_device *cdev;
Jan Glauber3f09bb82009-09-11 10:28:22 +0200327 struct dentry *debugfs_dev;
Jan Glauber6486cda2010-01-04 09:05:42 +0100328 struct dentry *debugfs_perf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
330 unsigned long int_parm;
Cornelia Hucka8237fc2006-01-06 00:19:21 -0800331 struct subchannel_id schid;
Jan Glauber779e6e12008-07-17 17:16:48 +0200332 unsigned long sch_token; /* QEBSM facility */
Frank Pavlic8129ee12006-01-06 00:19:20 -0800333
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 enum qdio_irq_states state;
335
Jan Glauber779e6e12008-07-17 17:16:48 +0200336 struct siga_flag siga_flag; /* siga sync information from qdioac */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
Jan Glauber779e6e12008-07-17 17:16:48 +0200338 int nr_input_qs;
339 int nr_output_qs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
341 struct ccw1 ccw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 struct ciw equeue;
343 struct ciw aqueue;
344
Jan Glauber779e6e12008-07-17 17:16:48 +0200345 struct qdio_ssqd_desc ssqd_desc;
Jan Glauber779e6e12008-07-17 17:16:48 +0200346 void (*orig_handler) (struct ccw_device *, unsigned long, struct irb *);
347
Jan Glauber6486cda2010-01-04 09:05:42 +0100348 int perf_stat_enabled;
Jan Glauber432ac5e2010-02-26 22:37:37 +0100349
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 struct qdr *qdr;
Jan Glauber779e6e12008-07-17 17:16:48 +0200351 unsigned long chsc_page;
352
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
354 struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
Jan Glauber779e6e12008-07-17 17:16:48 +0200355
Jan Glauber22f99342008-12-25 13:38:46 +0100356 debug_info_t *debug_area;
Jan Glauber779e6e12008-07-17 17:16:48 +0200357 struct mutex setup_mutex;
Jan Glauber432ac5e2010-02-26 22:37:37 +0100358 struct qdio_dev_perf_stat perf_stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359};
Jan Glauber779e6e12008-07-17 17:16:48 +0200360
361/* helper functions */
362#define queue_type(q) q->irq_ptr->qib.qfmt
Jan Glauber22f99342008-12-25 13:38:46 +0100363#define SCH_NO(q) (q->irq_ptr->schid.sch_no)
Jan Glauber779e6e12008-07-17 17:16:48 +0200364
365#define is_thinint_irq(irq) \
366 (irq->qib.qfmt == QDIO_IQDIO_QFMT || \
367 css_general_characteristics.aif_osa)
368
Jan Glauberd3072972010-02-26 22:37:36 +0100369#define qperf(__qdev, __attr) ((__qdev)->perf_stat.(__attr))
370
371#define qperf_inc(__q, __attr) \
372({ \
373 struct qdio_irq *qdev = (__q)->irq_ptr; \
374 if (qdev->perf_stat_enabled) \
375 (qdev->perf_stat.__attr)++; \
376})
377
378static inline void account_sbals_error(struct qdio_q *q, int count)
379{
380 q->q_stats.nr_sbal_error += count;
381 q->q_stats.nr_sbal_total += count;
382}
Jan Glauber6486cda2010-01-04 09:05:42 +0100383
Jan Glauber779e6e12008-07-17 17:16:48 +0200384/* the highest iqdio queue is used for multicast */
385static inline int multicast_outbound(struct qdio_q *q)
386{
387 return (q->irq_ptr->nr_output_qs > 1) &&
388 (q->nr == q->irq_ptr->nr_output_qs - 1);
389}
390
Jan Glauber779e6e12008-07-17 17:16:48 +0200391#define pci_out_supported(q) \
392 (q->irq_ptr->qib.ac & QIB_AC_OUTBOUND_PCI_SUPPORTED)
393#define is_qebsm(q) (q->irq_ptr->sch_token != 0)
394
395#define need_siga_sync_thinint(q) (!q->irq_ptr->siga_flag.no_sync_ti)
396#define need_siga_sync_out_thinint(q) (!q->irq_ptr->siga_flag.no_sync_out_ti)
397#define need_siga_in(q) (q->irq_ptr->siga_flag.input)
398#define need_siga_out(q) (q->irq_ptr->siga_flag.output)
399#define need_siga_sync(q) (q->irq_ptr->siga_flag.sync)
400#define siga_syncs_out_pci(q) (q->irq_ptr->siga_flag.no_sync_out_pci)
401
402#define for_each_input_queue(irq_ptr, q, i) \
403 for (i = 0, q = irq_ptr->input_qs[0]; \
404 i < irq_ptr->nr_input_qs; \
405 q = irq_ptr->input_qs[++i])
406#define for_each_output_queue(irq_ptr, q, i) \
407 for (i = 0, q = irq_ptr->output_qs[0]; \
408 i < irq_ptr->nr_output_qs; \
409 q = irq_ptr->output_qs[++i])
410
411#define prev_buf(bufnr) \
412 ((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK)
413#define next_buf(bufnr) \
414 ((bufnr + 1) & QDIO_MAX_BUFFERS_MASK)
415#define add_buf(bufnr, inc) \
416 ((bufnr + inc) & QDIO_MAX_BUFFERS_MASK)
Jan Glauber50f769d2008-12-25 13:38:47 +0100417#define sub_buf(bufnr, dec) \
418 ((bufnr - dec) & QDIO_MAX_BUFFERS_MASK)
Jan Glauber779e6e12008-07-17 17:16:48 +0200419
Jan Glauberd36deae2010-09-07 21:14:39 +0000420#define queue_irqs_enabled(q) \
421 (test_bit(QDIO_QUEUE_IRQS_DISABLED, &q->u.in.queue_irq_state) == 0)
422#define queue_irqs_disabled(q) \
423 (test_bit(QDIO_QUEUE_IRQS_DISABLED, &q->u.in.queue_irq_state) != 0)
424
425#define TIQDIO_SHARED_IND 63
426
427/* device state change indicators */
428struct indicator_t {
429 u32 ind; /* u32 because of compare-and-swap performance */
430 atomic_t count; /* use count, 0 or 1 for non-shared indicators */
431};
432
433extern struct indicator_t *q_indicators;
434
Jan Glauber4f325182011-01-05 12:47:49 +0100435static inline int shared_ind(u32 *dsci)
Jan Glauberd36deae2010-09-07 21:14:39 +0000436{
Jan Glauber4f325182011-01-05 12:47:49 +0100437 return dsci == &q_indicators[TIQDIO_SHARED_IND].ind;
Jan Glauberd36deae2010-09-07 21:14:39 +0000438}
439
Jan Glauber779e6e12008-07-17 17:16:48 +0200440/* prototypes for thin interrupt */
Jan Glauber779e6e12008-07-17 17:16:48 +0200441void qdio_setup_thinint(struct qdio_irq *irq_ptr);
442int qdio_establish_thinint(struct qdio_irq *irq_ptr);
443void qdio_shutdown_thinint(struct qdio_irq *irq_ptr);
444void tiqdio_add_input_queues(struct qdio_irq *irq_ptr);
445void tiqdio_remove_input_queues(struct qdio_irq *irq_ptr);
446void tiqdio_inbound_processing(unsigned long q);
447int tiqdio_allocate_memory(void);
448void tiqdio_free_memory(void);
449int tiqdio_register_thinints(void);
450void tiqdio_unregister_thinints(void);
451
452/* prototypes for setup */
453void qdio_inbound_processing(unsigned long data);
454void qdio_outbound_processing(unsigned long data);
455void qdio_outbound_timer(unsigned long data);
456void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
457 struct irb *irb);
458int qdio_allocate_qs(struct qdio_irq *irq_ptr, int nr_input_qs,
459 int nr_output_qs);
460void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr);
Jan Glauberbbd50e12008-12-25 13:38:43 +0100461int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr,
462 struct subchannel_id *schid,
463 struct qdio_ssqd_desc *data);
Jan Glauber779e6e12008-07-17 17:16:48 +0200464int qdio_setup_irq(struct qdio_initialize *init_data);
465void qdio_print_subchannel_info(struct qdio_irq *irq_ptr,
466 struct ccw_device *cdev);
467void qdio_release_memory(struct qdio_irq *irq_ptr);
Jan Glauber50f769d2008-12-25 13:38:47 +0100468int qdio_setup_create_sysfs(struct ccw_device *cdev);
469void qdio_setup_destroy_sysfs(struct ccw_device *cdev);
Jan Glauber779e6e12008-07-17 17:16:48 +0200470int qdio_setup_init(void);
471void qdio_setup_exit(void);
472
Jan Glauber60b5df22009-06-22 12:08:10 +0200473int debug_get_buf_state(struct qdio_q *q, unsigned int bufnr,
474 unsigned char *state);
Jan Glauber779e6e12008-07-17 17:16:48 +0200475#endif /* _CIO_QDIO_H */