2 * linux/include/asm-s390/qdio.h
4 * Copyright 2000,2008 IBM Corp.
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>
6 * Jan Glauber <jang@linux.vnet.ibm.com>
12 #include <linux/interrupt.h>
14 #include <asm/ccwdev.h>
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
22 #define QDIO_QETH_QFMT 0
23 #define QDIO_ZFCP_QFMT 1
24 #define QDIO_IQDIO_QFMT 2
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
46 } __attribute__ ((packed));
49 * struct qdr - queue description record (QDR)
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
81 struct qdesfmt0 qdf0[126];
82 } __attribute__ ((packed, aligned(4096)));
84 #define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40
85 #define QIB_RFLAGS_ENABLE_QEBSM 0x80
88 * struct qib - queue information block (QIB)
90 * @pfmt: implementation dependent parameter format
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
112 u8 parm[QDIO_MAX_BUFFERS_PER_Q];
113 } __attribute__ ((packed, aligned(256)));
116 * struct slibe - storage list information block element (SLIBE)
117 * @parms: implementation dependent parameters
124 * struct slib - storage list information block (SLIB)
125 * @nsliba: next SLIB address (if any)
127 * @slsba: SLSB address
128 * @slibe: SLIB elements
137 struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q];
138 } __attribute__ ((packed, aligned(2048)));
141 * struct sbal_flags - storage block address list flags
143 * @cont: contiguous storage
144 * @frag: fragmentation
153 } __attribute__ ((packed));
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
161 #define SBAL_FLAGS0_DATA_CONTINUATION 0x20UL
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
177 * struct sbal_sbalf_0 - sbal flags for sbale 0
178 * @pci: PCI indicator
179 * @cont: data continuation
180 * @sbtype: storage-block type (FCP)
182 struct sbal_sbalf_0 {
188 } __attribute__ ((packed));
191 * struct sbal_sbalf_1 - sbal flags for sbale 1
194 struct sbal_sbalf_1 {
197 } __attribute__ ((packed));
200 * struct sbal_sbalf_14 - sbal flags for sbale 14
201 * @erridx: error index
203 struct sbal_sbalf_14 {
206 } __attribute__ ((packed));
209 * struct sbal_sbalf_15 - sbal flags for sbale 15
210 * @reason: reason for error state
212 struct sbal_sbalf_15 {
214 } __attribute__ ((packed));
217 * union sbal_sbalf - storage block address list flags
225 struct sbal_sbalf_0 i0;
226 struct sbal_sbalf_1 i1;
227 struct sbal_sbalf_14 i14;
228 struct sbal_sbalf_15 i15;
233 * struct qdio_buffer_element - SBAL entry
238 struct qdio_buffer_element {
247 } __attribute__ ((packed, aligned(16)));
250 * struct qdio_buffer - storage block address list (SBAL)
251 * @element: SBAL entries
254 struct qdio_buffer_element element[QDIO_MAX_ELEMENTS_PER_BUFFER];
255 } __attribute__ ((packed, aligned(256)));
258 * struct sl_element - storage list entry
259 * @sbal: absolute SBAL address
264 unsigned long reserved;
268 } __attribute__ ((packed));
271 * struct sl - storage list (SL)
272 * @element: SL entries
275 struct sl_element element[QDIO_MAX_BUFFERS_PER_Q];
276 } __attribute__ ((packed, aligned(1024)));
279 * struct slsb - storage list state block (SLSB)
280 * @val: state per buffer
283 u8 val[QDIO_MAX_BUFFERS_PER_Q];
284 } __attribute__ ((packed, aligned(256)));
286 struct qdio_ssqd_desc {
303 } __attribute__ ((packed));
305 /* params are: ccw_device, qdio_error, queue_number,
306 first element processed, number of elements processed, int_parm */
307 typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
308 int, int, unsigned long);
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
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
321 /* for qdio_cleanup */
322 #define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
323 #define QDIO_FLAG_CLEANUP_USING_HALT 0x02
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
343 struct 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;
357 void **input_sbal_addr_array;
358 void **output_sbal_addr_array;
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 */
366 #define QDIO_FLAG_SYNC_INPUT 0x01
367 #define QDIO_FLAG_SYNC_OUTPUT 0x02
368 #define QDIO_FLAG_PCI_OUT 0x10
370 extern int qdio_initialize(struct qdio_initialize *init_data);
371 extern int qdio_allocate(struct qdio_initialize *init_data);
372 extern int qdio_establish(struct qdio_initialize *init_data);
373 extern int qdio_activate(struct ccw_device *);
375 extern int do_QDIO(struct ccw_device*, unsigned int flags,
376 int q_nr, int qidx, int count);
377 extern int qdio_cleanup(struct ccw_device*, int how);
378 extern int qdio_shutdown(struct ccw_device*, int how);
379 extern int qdio_free(struct ccw_device *);
380 extern struct qdio_ssqd_desc *qdio_get_ssqd_desc(struct ccw_device *cdev);
382 #endif /* __QDIO_H__ */