xref: /freebsd/sys/dev/siis/siis.h (revision 02e9120893770924227138ba49df1edb3896112a)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer,
12  *    without modification, immediately at the beginning of the file.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 /* ATA register defines */
30 #define ATA_DATA                        0       /* (RW) data */
31 
32 #define ATA_FEATURE                     1       /* (W) feature */
33 #define         ATA_F_DMA               0x01    /* enable DMA */
34 #define         ATA_F_OVL               0x02    /* enable overlap */
35 
36 #define ATA_COUNT                       2       /* (W) sector count */
37 
38 #define ATA_SECTOR                      3       /* (RW) sector # */
39 #define ATA_CYL_LSB                     4       /* (RW) cylinder# LSB */
40 #define ATA_CYL_MSB                     5       /* (RW) cylinder# MSB */
41 #define ATA_DRIVE                       6       /* (W) Sector/Drive/Head */
42 #define         ATA_D_LBA               0x40    /* use LBA addressing */
43 #define         ATA_D_IBM               0xa0    /* 512 byte sectors, ECC */
44 
45 #define ATA_COMMAND                     7       /* (W) command */
46 
47 #define ATA_ERROR                       8       /* (R) error */
48 #define         ATA_E_ILI               0x01    /* illegal length */
49 #define         ATA_E_NM                0x02    /* no media */
50 #define         ATA_E_ABORT             0x04    /* command aborted */
51 #define         ATA_E_MCR               0x08    /* media change request */
52 #define         ATA_E_IDNF              0x10    /* ID not found */
53 #define         ATA_E_MC                0x20    /* media changed */
54 #define         ATA_E_UNC               0x40    /* uncorrectable data */
55 #define         ATA_E_ICRC              0x80    /* UDMA crc error */
56 #define		ATA_E_ATAPI_SENSE_MASK	0xf0	/* ATAPI sense key mask */
57 
58 #define ATA_IREASON                     9       /* (R) interrupt reason */
59 #define         ATA_I_CMD               0x01    /* cmd (1) | data (0) */
60 #define         ATA_I_IN                0x02    /* read (1) | write (0) */
61 #define         ATA_I_RELEASE           0x04    /* released bus (1) */
62 #define         ATA_I_TAGMASK           0xf8    /* tag mask */
63 
64 #define ATA_STATUS                      10      /* (R) status */
65 #define ATA_ALTSTAT                     11      /* (R) alternate status */
66 #define         ATA_S_ERROR             0x01    /* error */
67 #define         ATA_S_INDEX             0x02    /* index */
68 #define         ATA_S_CORR              0x04    /* data corrected */
69 #define         ATA_S_DRQ               0x08    /* data request */
70 #define         ATA_S_DSC               0x10    /* drive seek completed */
71 #define         ATA_S_SERVICE           0x10    /* drive needs service */
72 #define         ATA_S_DWF               0x20    /* drive write fault */
73 #define         ATA_S_DMA               0x20    /* DMA ready */
74 #define         ATA_S_READY             0x40    /* drive ready */
75 #define         ATA_S_BUSY              0x80    /* busy */
76 
77 #define ATA_CONTROL                     12      /* (W) control */
78 #define         ATA_A_IDS               0x02    /* disable interrupts */
79 #define         ATA_A_RESET             0x04    /* RESET controller */
80 #define         ATA_A_4BIT              0x08    /* 4 head bits */
81 #define         ATA_A_HOB               0x80    /* High Order Byte enable */
82 
83 /* SATA register defines */
84 #define ATA_SSTATUS                     13
85 #define         ATA_SS_DET_MASK         0x0000000f
86 #define         ATA_SS_DET_NO_DEVICE    0x00000000
87 #define         ATA_SS_DET_DEV_PRESENT  0x00000001
88 #define         ATA_SS_DET_PHY_ONLINE   0x00000003
89 #define         ATA_SS_DET_PHY_OFFLINE  0x00000004
90 
91 #define         ATA_SS_SPD_MASK         0x000000f0
92 #define         ATA_SS_SPD_NO_SPEED     0x00000000
93 #define         ATA_SS_SPD_GEN1         0x00000010
94 #define         ATA_SS_SPD_GEN2         0x00000020
95 #define         ATA_SS_SPD_GEN3         0x00000030
96 
97 #define         ATA_SS_IPM_MASK         0x00000f00
98 #define         ATA_SS_IPM_NO_DEVICE    0x00000000
99 #define         ATA_SS_IPM_ACTIVE       0x00000100
100 #define         ATA_SS_IPM_PARTIAL      0x00000200
101 #define         ATA_SS_IPM_SLUMBER      0x00000600
102 
103 #define ATA_SERROR                      14
104 #define         ATA_SE_DATA_CORRECTED   0x00000001
105 #define         ATA_SE_COMM_CORRECTED   0x00000002
106 #define         ATA_SE_DATA_ERR         0x00000100
107 #define         ATA_SE_COMM_ERR         0x00000200
108 #define         ATA_SE_PROT_ERR         0x00000400
109 #define         ATA_SE_HOST_ERR         0x00000800
110 #define         ATA_SE_PHY_CHANGED      0x00010000
111 #define         ATA_SE_PHY_IERROR       0x00020000
112 #define         ATA_SE_COMM_WAKE        0x00040000
113 #define         ATA_SE_DECODE_ERR       0x00080000
114 #define         ATA_SE_PARITY_ERR       0x00100000
115 #define         ATA_SE_CRC_ERR          0x00200000
116 #define         ATA_SE_HANDSHAKE_ERR    0x00400000
117 #define         ATA_SE_LINKSEQ_ERR      0x00800000
118 #define         ATA_SE_TRANSPORT_ERR    0x01000000
119 #define         ATA_SE_UNKNOWN_FIS      0x02000000
120 
121 #define ATA_SCONTROL                    15
122 #define         ATA_SC_DET_MASK         0x0000000f
123 #define         ATA_SC_DET_IDLE         0x00000000
124 #define         ATA_SC_DET_RESET        0x00000001
125 #define         ATA_SC_DET_DISABLE      0x00000004
126 
127 #define         ATA_SC_SPD_MASK         0x000000f0
128 #define         ATA_SC_SPD_NO_SPEED     0x00000000
129 #define         ATA_SC_SPD_SPEED_GEN1   0x00000010
130 #define         ATA_SC_SPD_SPEED_GEN2   0x00000020
131 #define         ATA_SC_SPD_SPEED_GEN3   0x00000030
132 
133 #define         ATA_SC_IPM_MASK         0x00000f00
134 #define         ATA_SC_IPM_NONE         0x00000000
135 #define         ATA_SC_IPM_DIS_PARTIAL  0x00000100
136 #define         ATA_SC_IPM_DIS_SLUMBER  0x00000200
137 
138 #define ATA_SACTIVE                     16
139 
140 /*
141  * Global registers
142  */
143 #define SIIS_GCTL		0x0040		/* Global Control	*/
144 #define SIIS_GCTL_GRESET	  0x80000000	/* Global Reset		*/
145 #define SIIS_GCTL_MSIACK	  0x40000000	/* MSI Ack		*/
146 #define SIIS_GCTL_I2C_IE	  0x20000000	/* I2C int enable	*/
147 #define SIIS_GCTL_300CAP	  0x01000000	/* 3Gb/s capable (R)	*/
148 #define SIIS_GCTL_PIE(n)	  (1 << (n))	/* Port int enable	*/
149 #define SIIS_IS			0x0044		/* Interrupt Status	*/
150 #define SIIS_IS_I2C		  0x20000000	/* I2C Int Status	*/
151 #define SIIS_IS_PORT(n)		  (1 << (n))	/* Port interrupt stat	*/
152 #define SIIS_PHYCONF		0x0048		/* PHY Configuration */
153 #define SIIS_BIST_CTL		0x0050
154 #define SIIS_BIST_PATTERN	0x0054	/* 32 bit pattern */
155 #define SIIS_BIST_STATUS	0x0058
156 #define SIIS_I2C_CTL		0x0060
157 #define SIIS_I2C_STS		0x0064
158 #define SIIS_I2C_SADDR		0x0068
159 #define SIIS_I2C_DATA		0x006C
160 #define SIIS_FLASH_ADDR		0x0070
161 #define SIIS_GPIO		0x0074
162 
163 /*
164  * Port registers
165  */
166 
167 #define SIIS_P_LRAM		0x0000
168 #define   SIIS_P_LRAM_SLOT(i)	  (SIIS_P_LRAM + i * 128)
169 #define SIIS_P_PMPSTS(i)	(0x0F80 + i * 8)
170 #define SIIS_P_PMPQACT(i)	(0x0F80 + i * 8 + 4)
171 #define SIIS_P_STS		0x1000
172 #define SIIS_P_CTLSET		0x1000
173 #define SIIS_P_CTLCLR		0x1004
174 #define   SIIS_P_CTL_READY	  0x80000000
175 #define   SIIS_P_CTL_OOBB	  0x02000000
176 #define   SIIS_P_CTL_ACT	  0x001F0000
177 #define   SIIS_P_CTL_ACT_SHIFT	  16
178 #define   SIIS_P_CTL_LED_ON	  0x00008000
179 #define   SIIS_P_CTL_AIA	  0x00004000
180 #define   SIIS_P_CTL_PME	  0x00002000
181 #define   SIIS_P_CTL_IA		  0x00001000
182 #define   SIIS_P_CTL_IR		  0x00000800
183 #define   SIIS_P_CTL_32BIT	  0x00000400
184 #define   SIIS_P_CTL_SCR_DIS	  0x00000200
185 #define   SIIS_P_CTL_CONT_DIS	  0x00000100
186 #define   SIIS_P_CTL_TBIST	  0x00000080
187 #define   SIIS_P_CTL_RESUME	  0x00000040
188 #define   SIIS_P_CTL_PLENGTH	  0x00000020
189 #define   SIIS_P_CTL_LED_DIS	  0x00000010
190 #define   SIIS_P_CTL_INT_NCOR	  0x00000008
191 #define   SIIS_P_CTL_PORT_INIT  0x00000004
192 #define   SIIS_P_CTL_DEV_RESET  0x00000002
193 #define   SIIS_P_CTL_PORT_RESET 0x00000001
194 #define SIIS_P_IS		0x1008
195 #define   SIIS_P_IX_SDBN	  0x00000800
196 #define   SIIS_P_IX_HS_ET	  0x00000400
197 #define   SIIS_P_IX_CRC_ET	  0x00000200
198 #define   SIIS_P_IX_8_10_ET	  0x00000100
199 #define   SIIS_P_IX_DEX		  0x00000080
200 #define   SIIS_P_IX_UNRECFIS	  0x00000040
201 #define   SIIS_P_IX_COMWAKE	  0x00000020
202 #define   SIIS_P_IX_PHYRDYCHG	  0x00000010
203 #define   SIIS_P_IX_PMCHG	  0x00000008
204 #define   SIIS_P_IX_READY	  0x00000004
205 #define   SIIS_P_IX_COMMERR	  0x00000002
206 #define   SIIS_P_IX_COMMCOMP	  0x00000001
207 #define   SIIS_P_IX_ENABLED	  SIIS_P_IX_COMMCOMP | SIIS_P_IX_COMMERR | \
208     SIIS_P_IX_PHYRDYCHG | SIIS_P_IX_SDBN
209 #define SIIS_P_IESET		0x1010
210 #define SIIS_P_IECLR		0x1014
211 #define SIIS_P_CACTU		0x101C
212 #define SIIS_P_CMDEFIFO		0x1020
213 #define SIIS_P_CMDERR		0x1024
214 #define   SIIS_P_CMDERR_DEV		1
215 #define   SIIS_P_CMDERR_SDB		2
216 #define   SIIS_P_CMDERR_DATAFIS		3
217 #define   SIIS_P_CMDERR_SENDFIS		4
218 #define   SIIS_P_CMDERR_INCSTATE	5
219 #define   SIIS_P_CMDERR_DIRECTION	6
220 #define   SIIS_P_CMDERR_UNDERRUN	7
221 #define   SIIS_P_CMDERR_OVERRUN		8
222 #define   SIIS_P_CMDERR_LLOVERRUN	9
223 #define   SIIS_P_CMDERR_PPE		11
224 #define   SIIS_P_CMDERR_SGTALIGN	16
225 #define   SIIS_P_CMDERR_PCITASGT	17
226 #define   SIIS_P_CMDERR_OCIMASGT	18
227 #define   SIIS_P_CMDERR_PCIPESGT	19
228 #define   SIIS_P_CMDERR_PRBALIGN	24
229 #define   SIIS_P_CMDERR_PCITAPRB	25
230 #define   SIIS_P_CMDERR_PCIMAPRB	26
231 #define   SIIS_P_CMDERR_PCIPEPRB	27
232 #define   SIIS_P_CMDERR_PCITADATA	33
233 #define   SIIS_P_CMDERR_PCIMADATA	34
234 #define   SIIS_P_CMDERR_PCIPEDATA	35
235 #define   SIIS_P_CMDERR_SERVICE		36
236 #define SIIS_P_FISCFG		0x1028
237 #define SIIS_P_PCIEFIFOTH	0x102C
238 #define SIIS_P_8_10_DEC_ERR	0x1040
239 #define SIIS_P_CRC_ERR		0x1044
240 #define SIIS_P_HS_ERR		0x1048
241 #define SIIS_P_PHYCFG		0x1050
242 #define SIIS_P_SS		0x1800
243 #define   SIIS_P_SS_ATTN	  0x80000000
244 #define SIIS_P_CACTL(i)		(0x1C00 + i * 8)
245 #define SIIS_P_CACTH(i)		(0x1C00 + i * 8 + 4)
246 #define SIIS_P_CTX		0x1E04
247 #define   SIIS_P_CTX_SLOT	  0x0000001F
248 #define   SIIS_P_CTX_SLOT_SHIFT	  0
249 #define   SIIS_P_CTX_PMP	  0x000001E0
250 #define   SIIS_P_CTX_PMP_SHIFT	  5
251 
252 #define SIIS_P_SCTL		0x1F00
253 #define SIIS_P_SSTS		0x1F04
254 #define SIIS_P_SERR		0x1F08
255 #define SIIS_P_SACT		0x1F0C
256 #define SIIS_P_SNTF		0x1F10
257 
258 #define SIIS_MAX_PORTS		4
259 #define SIIS_MAX_SLOTS		31
260 
261 #define SIIS_OFFSET		0x100
262 #define SIIS_STEP		0x80
263 
264 /* Pessimistic prognosis on number of required S/G entries */
265 #define SIIS_SG_ENTRIES		(roundup(btoc(maxphys), 4) + 1)
266 /* Port Request Block + S/G entries.  128byte aligned. */
267 #define SIIS_PRB_SIZE		(32 + 16 + SIIS_SG_ENTRIES * 16)
268 /* Total main work area. */
269 #define SIIS_WORK_SIZE		(SIIS_PRB_SIZE * SIIS_MAX_SLOTS)
270 
271 struct siis_dma_prd {
272     u_int64_t			dba;
273     u_int32_t			dbc;
274     u_int32_t			control;
275 #define SIIS_PRD_TRM		0x80000000
276 #define SIIS_PRD_LNK		0x40000000
277 #define SIIS_PRD_DRD		0x20000000
278 #define SIIS_PRD_XCF		0x10000000
279 } __packed;
280 
281 struct siis_cmd_ata {
282     struct siis_dma_prd		prd[2];
283 } __packed;
284 
285 struct siis_cmd_atapi {
286     u_int8_t			ccb[16];
287     struct siis_dma_prd		prd[1];
288 } __packed;
289 
290 struct siis_cmd {
291     u_int16_t			control;
292 #define SIIS_PRB_PROTOCOL_OVERRIDE	0x0001
293 #define SIIS_PRB_RETRANSMIT		0x0002
294 #define SIIS_PRB_EXTERNAL_COMMAND	0x0004
295 #define SIIS_PRB_RECEIVE		0x0008
296 #define SIIS_PRB_PACKET_READ		0x0010
297 #define SIIS_PRB_PACKET_WRITE		0x0020
298 #define SIIS_PRB_INTERRUPT_MASK		0x0040
299 #define SIIS_PRB_SOFT_RESET		0x0080
300     u_int16_t			protocol_override;
301 #define SIIS_PRB_PROTO_PACKET		0x0001
302 #define SIIS_PRB_PROTO_TCQ		0x0002
303 #define SIIS_PRB_PROTO_NCQ		0x0004
304 #define SIIS_PRB_PROTO_READ		0x0008
305 #define SIIS_PRB_PROTO_WRITE		0x0010
306 #define SIIS_PRB_PROTO_TRANSPARENT	0x0020
307     u_int32_t			transfer_count;
308     u_int8_t			fis[24];
309     union {
310 	struct siis_cmd_ata	ata;
311 	struct siis_cmd_atapi	atapi;
312     } u;
313 } __packed;
314 
315 /* misc defines */
316 #define ATA_IRQ_RID                     0
317 #define ATA_INTR_FLAGS                  (INTR_MPSAFE|INTR_TYPE_BIO|INTR_ENTROPY)
318 
319 struct ata_dmaslot {
320     bus_dmamap_t                data_map;       /* data DMA map */
321     int				nsegs;		/* Number of segs loaded */
322 };
323 
324 /* structure holding DMA related information */
325 struct ata_dma {
326     bus_dma_tag_t               work_tag;       /* workspace DMA tag */
327     bus_dmamap_t                work_map;       /* workspace DMA map */
328     uint8_t                     *work;          /* workspace */
329     bus_addr_t                  work_bus;       /* bus address of work */
330     bus_dma_tag_t               data_tag;       /* data DMA tag */
331 };
332 
333 enum siis_slot_states {
334 	SIIS_SLOT_EMPTY,
335 	SIIS_SLOT_LOADING,
336 	SIIS_SLOT_RUNNING,
337 	SIIS_SLOT_WAITING
338 };
339 
340 struct siis_slot {
341     device_t                    dev;            /* Device handle */
342     u_int8_t			slot;           /* Number of this slot */
343     enum siis_slot_states	state;          /* Slot state */
344     u_int			prb_offset;	/* PRB offset */
345     union ccb			*ccb;		/* CCB occupying slot */
346     struct ata_dmaslot          dma;            /* DMA data of this slot */
347     struct callout              timeout;        /* Execution timeout */
348 };
349 
350 struct siis_device {
351 	int			revision;
352 	int			mode;
353 	u_int			bytecount;
354 	u_int			atapi;
355 	u_int			tags;
356 	u_int			caps;
357 };
358 
359 /* structure describing an ATA channel */
360 struct siis_channel {
361 	device_t		dev;            /* Device handle */
362 	int			unit;           /* Physical channel */
363 	struct resource		*r_mem;		/* Memory of this channel */
364 	struct resource		*r_irq;         /* Interrupt of this channel */
365 	void			*ih;            /* Interrupt handle */
366 	struct ata_dma		dma;            /* DMA data */
367 	struct cam_sim		*sim;
368 	struct cam_path		*path;
369 	struct cdev		*led;		/* Activity led led(4) cdev. */
370 	int			quirks;
371 	int			pm_level;	/* power management level */
372 
373 	struct siis_slot	slot[SIIS_MAX_SLOTS];
374 	union ccb		*hold[SIIS_MAX_SLOTS];
375 	struct mtx		mtx;		/* state lock */
376 	int			devices;        /* What is present */
377 	int			pm_present;	/* PM presence reported */
378 	uint32_t		oslots;		/* Occupied slots */
379 	uint32_t		rslots;		/* Running slots */
380 	uint32_t		aslots;		/* Slots with atomic commands */
381 	uint32_t		eslots;		/* Slots in error */
382 	uint32_t		toslots;	/* Slots in timeout */
383 	int			numrslots;	/* Number of running slots */
384 	int			numtslots[SIIS_MAX_SLOTS]; /* Number of tagged slots */
385 	int			numhslots;	/* Number of held slots */
386 	int			recoverycmd;	/* Our READ LOG active */
387 	int			fatalerr;	/* Fatal error happened */
388 	int			recovery;	/* Some slots are in error */
389 	union ccb		*frozen;	/* Frozen command */
390 
391 	struct siis_device	user[16];	/* User-specified settings */
392 	struct siis_device	curr[16];	/* Current settings */
393 };
394 
395 /* structure describing a SIIS controller */
396 struct siis_controller {
397 	device_t		dev;
398 	int			r_grid;
399 	struct resource		*r_gmem;
400 	int			r_rid;
401 	struct resource		*r_mem;
402 	struct rman		sc_iomem;
403 	struct siis_controller_irq {
404 		struct resource		*r_irq;
405 		void			*handle;
406 		int			r_irq_rid;
407 	} irq;
408 	int			quirks;
409 	int			channels;
410 	uint32_t		gctl;
411 	struct {
412 		void			(*function)(void *);
413 		void			*argument;
414 	} interrupt[SIIS_MAX_PORTS];
415 };
416 
417 enum siis_err_type {
418 	SIIS_ERR_NONE,		/* No error */
419 	SIIS_ERR_INVALID,	/* Error detected by us before submitting. */
420 	SIIS_ERR_INNOCENT,	/* Innocent victim. */
421 	SIIS_ERR_TFE,		/* Task File Error. */
422 	SIIS_ERR_SATA,		/* SATA error. */
423 	SIIS_ERR_TIMEOUT,	/* Command execution timeout. */
424 	SIIS_ERR_NCQ,		/* NCQ command error. CCB should be put on hold
425 				 * until READ LOG executed to reveal error. */
426 };
427 
428 /* macros to hide busspace uglyness */
429 #define ATA_INB(res, offset) \
430 	bus_read_1((res), (offset))
431 #define ATA_INW(res, offset) \
432 	bus_read_2((res), (offset))
433 #define ATA_INL(res, offset) \
434 	bus_read_4((res), (offset))
435 #define ATA_INSW(res, offset, addr, count) \
436 	bus_read_multi_2((res), (offset), (addr), (count))
437 #define ATA_INSW_STRM(res, offset, addr, count) \
438 	bus_read_multi_stream_2((res), (offset), (addr), (count))
439 #define ATA_INSL(res, offset, addr, count) \
440 	bus_read_multi_4((res), (offset), (addr), (count))
441 #define ATA_INSL_STRM(res, offset, addr, count) \
442 	bus_read_multi_stream_4((res), (offset), (addr), (count))
443 #define ATA_OUTB(res, offset, value) \
444 	bus_write_1((res), (offset), (value))
445 #define ATA_OUTW(res, offset, value) \
446 	bus_write_2((res), (offset), (value))
447 #define ATA_OUTL(res, offset, value) \
448 	bus_write_4((res), (offset), (value))
449 #define ATA_OUTSW(res, offset, addr, count) \
450 	bus_write_multi_2((res), (offset), (addr), (count))
451 #define ATA_OUTSW_STRM(res, offset, addr, count) \
452 	bus_write_multi_stream_2((res), (offset), (addr), (count))
453 #define ATA_OUTSL(res, offset, addr, count) \
454 	bus_write_multi_4((res), (offset), (addr), (count))
455 #define ATA_OUTSL_STRM(res, offset, addr, count) \
456 	bus_write_multi_stream_4((res), (offset), (addr), (count))
457