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-rw-r--r--arch/s390/include/asm/qdio.h382
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diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
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1/*
2 * linux/include/asm-s390/qdio.h
3 *
4 * Copyright 2000,2008 IBM Corp.
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
6 * Jan Glauber <jang@linux.vnet.ibm.com>
7 *
8 */
9#ifndef __QDIO_H__
10#define __QDIO_H__
11
12#include <linux/interrupt.h>
13#include <asm/cio.h>
14#include <asm/ccwdev.h>
15
16#define QDIO_MAX_QUEUES_PER_IRQ 32
17#define QDIO_MAX_BUFFERS_PER_Q 128
18#define QDIO_MAX_BUFFERS_MASK (QDIO_MAX_BUFFERS_PER_Q - 1)
19#define QDIO_MAX_ELEMENTS_PER_BUFFER 16
20#define QDIO_SBAL_SIZE 256
21
22#define QDIO_QETH_QFMT 0
23#define QDIO_ZFCP_QFMT 1
24#define QDIO_IQDIO_QFMT 2
25
26/**
27 * struct qdesfmt0 - queue descriptor, format 0
28 * @sliba: storage list information block address
29 * @sla: storage list address
30 * @slsba: storage list state block address
31 * @akey: access key for DLIB
32 * @bkey: access key for SL
33 * @ckey: access key for SBALs
34 * @dkey: access key for SLSB
35 */
36struct qdesfmt0 {
37 u64 sliba;
38 u64 sla;
39 u64 slsba;
40 u32 : 32;
41 u32 akey : 4;
42 u32 bkey : 4;
43 u32 ckey : 4;
44 u32 dkey : 4;
45 u32 : 16;
46} __attribute__ ((packed));
47
48/**
49 * struct qdr - queue description record (QDR)
50 * @qfmt: queue format
51 * @pfmt: implementation dependent parameter format
52 * @ac: adapter characteristics
53 * @iqdcnt: input queue descriptor count
54 * @oqdcnt: output queue descriptor count
55 * @iqdsz: inpout queue descriptor size
56 * @oqdsz: output queue descriptor size
57 * @qiba: queue information block address
58 * @qkey: queue information block key
59 * @qdf0: queue descriptions
60 */
61struct qdr {
62 u32 qfmt : 8;
63 u32 pfmt : 8;
64 u32 : 8;
65 u32 ac : 8;
66 u32 : 8;
67 u32 iqdcnt : 8;
68 u32 : 8;
69 u32 oqdcnt : 8;
70 u32 : 8;
71 u32 iqdsz : 8;
72 u32 : 8;
73 u32 oqdsz : 8;
74 /* private: */
75 u32 res[9];
76 /* public: */
77 u64 qiba;
78 u32 : 32;
79 u32 qkey : 4;
80 u32 : 28;
81 struct qdesfmt0 qdf0[126];
82} __attribute__ ((packed, aligned(4096)));
83
84#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40
85#define QIB_RFLAGS_ENABLE_QEBSM 0x80
86
87/**
88 * struct qib - queue information block (QIB)
89 * @qfmt: queue format
90 * @pfmt: implementation dependent parameter format
91 * @rflags: QEBSM
92 * @ac: adapter characteristics
93 * @isliba: absolute address of first input SLIB
94 * @osliba: absolute address of first output SLIB
95 * @ebcnam: adapter identifier in EBCDIC
96 * @parm: implementation dependent parameters
97 */
98struct qib {
99 u32 qfmt : 8;
100 u32 pfmt : 8;
101 u32 rflags : 8;
102 u32 ac : 8;
103 u32 : 32;
104 u64 isliba;
105 u64 osliba;
106 u32 : 32;
107 u32 : 32;
108 u8 ebcnam[8];
109 /* private: */
110 u8 res[88];
111 /* public: */
112 u8 parm[QDIO_MAX_BUFFERS_PER_Q];
113} __attribute__ ((packed, aligned(256)));
114
115/**
116 * struct slibe - storage list information block element (SLIBE)
117 * @parms: implementation dependent parameters
118 */
119struct slibe {
120 u64 parms;
121};
122
123/**
124 * struct slib - storage list information block (SLIB)
125 * @nsliba: next SLIB address (if any)
126 * @sla: SL address
127 * @slsba: SLSB address
128 * @slibe: SLIB elements
129 */
130struct slib {
131 u64 nsliba;
132 u64 sla;
133 u64 slsba;
134 /* private: */
135 u8 res[1000];
136 /* public: */
137 struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];
138} __attribute__ ((packed, aligned(2048)));
139
140/**
141 * struct sbal_flags - storage block address list flags
142 * @last: last entry
143 * @cont: contiguous storage
144 * @frag: fragmentation
145 */
146struct sbal_flags {
147 u8 : 1;
148 u8 last : 1;
149 u8 cont : 1;
150 u8 : 1;
151 u8 frag : 2;
152 u8 : 2;
153} __attribute__ ((packed));
154
155#define SBAL_FLAGS_FIRST_FRAG 0x04000000UL
156#define SBAL_FLAGS_MIDDLE_FRAG 0x08000000UL
157#define SBAL_FLAGS_LAST_FRAG 0x0c000000UL
158#define SBAL_FLAGS_LAST_ENTRY 0x40000000UL
159#define SBAL_FLAGS_CONTIGUOUS 0x20000000UL
160
161#define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
162
163/* Awesome OpenFCP extensions */
164#define SBAL_FLAGS0_TYPE_STATUS 0x00UL
165#define SBAL_FLAGS0_TYPE_WRITE 0x08UL
166#define SBAL_FLAGS0_TYPE_READ 0x10UL
167#define SBAL_FLAGS0_TYPE_WRITE_READ 0x18UL
168#define SBAL_FLAGS0_MORE_SBALS 0x04UL
169#define SBAL_FLAGS0_COMMAND 0x02UL
170#define SBAL_FLAGS0_LAST_SBAL 0x00UL
171#define SBAL_FLAGS0_ONLY_SBAL SBAL_FLAGS0_COMMAND
172#define SBAL_FLAGS0_MIDDLE_SBAL SBAL_FLAGS0_MORE_SBALS
173#define SBAL_FLAGS0_FIRST_SBAL SBAL_FLAGS0_MORE_SBALS | SBAL_FLAGS0_COMMAND
174#define SBAL_FLAGS0_PCI 0x40
175
176/**
177 * struct sbal_sbalf_0 - sbal flags for sbale 0
178 * @pci: PCI indicator
179 * @cont: data continuation
180 * @sbtype: storage-block type (FCP)
181 */
182struct sbal_sbalf_0 {
183 u8 : 1;
184 u8 pci : 1;
185 u8 cont : 1;
186 u8 sbtype : 2;
187 u8 : 3;
188} __attribute__ ((packed));
189
190/**
191 * struct sbal_sbalf_1 - sbal flags for sbale 1
192 * @key: storage key
193 */
194struct sbal_sbalf_1 {
195 u8 : 4;
196 u8 key : 4;
197} __attribute__ ((packed));
198
199/**
200 * struct sbal_sbalf_14 - sbal flags for sbale 14
201 * @erridx: error index
202 */
203struct sbal_sbalf_14 {
204 u8 : 4;
205 u8 erridx : 4;
206} __attribute__ ((packed));
207
208/**
209 * struct sbal_sbalf_15 - sbal flags for sbale 15
210 * @reason: reason for error state
211 */
212struct sbal_sbalf_15 {
213 u8 reason;
214} __attribute__ ((packed));
215
216/**
217 * union sbal_sbalf - storage block address list flags
218 * @i0: sbalf0
219 * @i1: sbalf1
220 * @i14: sbalf14
221 * @i15: sblaf15
222 * @value: raw value
223 */
224union sbal_sbalf {
225 struct sbal_sbalf_0 i0;
226 struct sbal_sbalf_1 i1;
227 struct sbal_sbalf_14 i14;
228 struct sbal_sbalf_15 i15;
229 u8 value;
230};
231
232/**
233 * struct qdio_buffer_element - SBAL entry
234 * @flags: flags
235 * @length: length
236 * @addr: address
237*/
238struct qdio_buffer_element {
239 u32 flags;
240 u32 length;
241#ifdef CONFIG_32BIT
242 /* private: */
243 void *reserved;
244 /* public: */
245#endif
246 void *addr;
247} __attribute__ ((packed, aligned(16)));
248
249/**
250 * struct qdio_buffer - storage block address list (SBAL)
251 * @element: SBAL entries
252 */
253struct qdio_buffer {
254 struct qdio_buffer_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
255} __attribute__ ((packed, aligned(256)));
256
257/**
258 * struct sl_element - storage list entry
259 * @sbal: absolute SBAL address
260 */
261struct sl_element {
262#ifdef CONFIG_32BIT
263 /* private: */
264 unsigned long reserved;
265 /* public: */
266#endif
267 unsigned long sbal;
268} __attribute__ ((packed));
269
270/**
271 * struct sl - storage list (SL)
272 * @element: SL entries
273 */
274struct sl {
275 struct sl_element element[QDIO_MAX_BUFFERS_PER_Q];
276} __attribute__ ((packed, aligned(1024)));
277
278/**
279 * struct slsb - storage list state block (SLSB)
280 * @val: state per buffer
281 */
282struct slsb {
283 u8 val[QDIO_MAX_BUFFERS_PER_Q];
284} __attribute__ ((packed, aligned(256)));
285
286struct qdio_ssqd_desc {
287 u8 flags;
288 u8:8;
289 u16 sch;
290 u8 qfmt;
291 u8 parm;
292 u8 qdioac1;
293 u8 sch_class;
294 u8 pcnt;
295 u8 icnt;
296 u8:8;
297 u8 ocnt;
298 u8:8;
299 u8 mbccnt;
300 u16 qdioac2;
301 u64 sch_token;
302 u64:64;
303} __attribute__ ((packed));
304
305/* params are: ccw_device, qdio_error, queue_number,
306 first element processed, number of elements processed, int_parm */
307typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
308 int, int, unsigned long);
309
310/* qdio errors reported to the upper-layer program */
311#define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10
312#define QDIO_ERROR_SIGA_BUSY 0x20
313#define QDIO_ERROR_ACTIVATE_CHECK_CONDITION 0x40
314#define QDIO_ERROR_SLSB_STATE 0x80
315
316/* for qdio_initialize */
317#define QDIO_INBOUND_0COPY_SBALS 0x01
318#define QDIO_OUTBOUND_0COPY_SBALS 0x02
319#define QDIO_USE_OUTBOUND_PCIS 0x04
320
321/* for qdio_cleanup */
322#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
323#define QDIO_FLAG_CLEANUP_USING_HALT 0x02
324
325/**
326 * struct qdio_initialize - qdio initalization data
327 * @cdev: associated ccw device
328 * @q_format: queue format
329 * @adapter_name: name for the adapter
330 * @qib_param_field_format: format for qib_parm_field
331 * @qib_param_field: pointer to 128 bytes or NULL, if no param field
332 * @input_slib_elements: pointer to no_input_qs * 128 words of data or NULL
333 * @output_slib_elements: pointer to no_output_qs * 128 words of data or NULL
334 * @no_input_qs: number of input queues
335 * @no_output_qs: number of output queues
336 * @input_handler: handler to be called for input queues
337 * @output_handler: handler to be called for output queues
338 * @int_parm: interruption parameter
339 * @flags: initialization flags
340 * @input_sbal_addr_array: address of no_input_qs * 128 pointers
341 * @output_sbal_addr_array: address of no_output_qs * 128 pointers
342 */
343struct qdio_initialize {
344 struct ccw_device *cdev;
345 unsigned char q_format;
346 unsigned char adapter_name[8];
347 unsigned int qib_param_field_format;
348 unsigned char *qib_param_field;
349 unsigned long *input_slib_elements;
350 unsigned long *output_slib_elements;
351 unsigned int no_input_qs;
352 unsigned int no_output_qs;
353 qdio_handler_t *input_handler;
354 qdio_handler_t *output_handler;
355 unsigned long int_parm;
356 unsigned long flags;
357 void **input_sbal_addr_array;
358 void **output_sbal_addr_array;
359};
360
361#define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */
362#define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_establish */
363#define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */
364#define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */
365
366#define QDIO_FLAG_SYNC_INPUT 0x01
367#define QDIO_FLAG_SYNC_OUTPUT 0x02
368#define QDIO_FLAG_PCI_OUT 0x10
369
370extern int qdio_initialize(struct qdio_initialize *init_data);
371extern int qdio_allocate(struct qdio_initialize *init_data);
372extern int qdio_establish(struct qdio_initialize *init_data);
373extern int qdio_activate(struct ccw_device *);
374
375extern int do_QDIO(struct ccw_device*, unsigned int flags,
376 int q_nr, int qidx, int count);
377extern int qdio_cleanup(struct ccw_device*, int how);
378extern int qdio_shutdown(struct ccw_device*, int how);
379extern int qdio_free(struct ccw_device *);
380extern struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev);
381
382#endif /* __QDIO_H__ */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 21:47:24 -0500