xref: /titanic_41/usr/src/uts/common/sys/nxge/nxge_rxdma.h (revision 0dc2366f7b9f9f36e10909b1e95edbf2a261c2ac)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_SYS_NXGE_NXGE_RXDMA_H
28 #define	_SYS_NXGE_NXGE_RXDMA_H
29 
30 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 #include <sys/nxge/nxge_rxdma_hw.h>
35 #include <npi_rxdma.h>
36 
37 #define	RXDMA_CK_DIV_DEFAULT		7500 	/* 25 usec */
38 /*
39  * Hardware RDC designer: 8 cache lines during Atlas bringup.
40  */
41 #define	RXDMA_RED_LESS_BYTES		(8 * 64) /* 8 cache line */
42 #define	RXDMA_RED_LESS_ENTRIES		(RXDMA_RED_LESS_BYTES/8)
43 #define	RXDMA_RED_WINDOW_DEFAULT	0
44 #define	RXDMA_RED_THRES_DEFAULT		0
45 
46 #define	RXDMA_RCR_PTHRES_DEFAULT	0x20
47 #define	RXDMA_RCR_TO_DEFAULT		0x8
48 
49 /*
50  * hardware workarounds: kick 16 (was 8 before)
51  */
52 #define	NXGE_RXDMA_POST_BATCH		16
53 
54 #define	RXBUF_START_ADDR(a, index, bsize)	((a & (index * bsize))
55 #define	RXBUF_OFFSET_FROM_START(a, start)	(start - a)
56 #define	RXBUF_64B_ALIGNED		64
57 
58 #define	NXGE_RXBUF_EXTRA		34
59 /*
60  * Receive buffer thresholds and buffer types
61  */
62 #define	NXGE_RX_BCOPY_SCALE	8	/* use 1/8 as lowest granularity */
63 typedef enum  {
64 	NXGE_RX_COPY_ALL = 0,		/* do bcopy on every packet	 */
65 	NXGE_RX_COPY_1,			/* bcopy on 1/8 of buffer posted */
66 	NXGE_RX_COPY_2,			/* bcopy on 2/8 of buffer posted */
67 	NXGE_RX_COPY_3,			/* bcopy on 3/8 of buffer posted */
68 	NXGE_RX_COPY_4,			/* bcopy on 4/8 of buffer posted */
69 	NXGE_RX_COPY_5,			/* bcopy on 5/8 of buffer posted */
70 	NXGE_RX_COPY_6,			/* bcopy on 6/8 of buffer posted */
71 	NXGE_RX_COPY_7,			/* bcopy on 7/8 of buffer posted */
72 	NXGE_RX_COPY_NONE		/* don't do bcopy at all	 */
73 } nxge_rxbuf_threshold_t;
74 
75 typedef enum  {
76 	NXGE_RBR_TYPE0 = RCR_PKTBUFSZ_0,  /* bcopy buffer size 0 (small) */
77 	NXGE_RBR_TYPE1 = RCR_PKTBUFSZ_1,  /* bcopy buffer size 1 (medium) */
78 	NXGE_RBR_TYPE2 = RCR_PKTBUFSZ_2	  /* bcopy buffer size 2 (large) */
79 } nxge_rxbuf_type_t;
80 
81 typedef	struct _rdc_errlog {
82 	rdmc_par_err_log_t	pre_par;
83 	rdmc_par_err_log_t	sha_par;
84 	uint8_t			compl_err_type;
85 } rdc_errlog_t;
86 
87 /*
88  * Receive  Statistics.
89  */
90 typedef struct _nxge_rx_ring_stats_t {
91 	uint64_t	ipackets;
92 	uint64_t	ibytes;
93 	uint32_t	ierrors;
94 	uint32_t	multircv;
95 	uint32_t	brdcstrcv;
96 	uint32_t	norcvbuf;
97 
98 	uint32_t	rx_inits;
99 	uint32_t	rx_jumbo_pkts;
100 	uint32_t	rx_multi_pkts;
101 	uint32_t	rx_mtu_pkts;
102 	uint32_t	rx_no_buf;
103 
104 	/*
105 	 * Receive buffer management statistics.
106 	 */
107 	uint32_t	rx_new_pages;
108 	uint32_t	rx_new_mtu_pgs;
109 	uint32_t	rx_new_nxt_pgs;
110 	uint32_t	rx_reused_pgs;
111 	uint32_t	rx_mtu_drops;
112 	uint32_t	rx_nxt_drops;
113 
114 	/*
115 	 * Error event stats.
116 	 */
117 	uint32_t	rx_rbr_tmout;
118 	uint32_t	pkt_too_long_err;
119 	uint32_t	l2_err;
120 	uint32_t	l4_cksum_err;
121 	uint32_t	fflp_soft_err;
122 	uint32_t	zcp_soft_err;
123 	uint32_t	rcr_unknown_err;
124 	uint32_t	dcf_err;
125 	uint32_t 	rbr_tmout;
126 	uint32_t 	rsp_cnt_err;
127 	uint32_t 	byte_en_err;
128 	uint32_t 	byte_en_bus;
129 	uint32_t 	rsp_dat_err;
130 	uint32_t 	rcr_ack_err;
131 	uint32_t 	dc_fifo_err;
132 	uint32_t 	rcr_sha_par;
133 	uint32_t 	rbr_pre_par;
134 	uint32_t 	port_drop_pkt;
135 	uint32_t 	wred_drop;
136 	uint32_t 	rbr_pre_empty;
137 	uint32_t 	rcr_shadow_full;
138 	uint32_t 	config_err;
139 	uint32_t 	rcrincon;
140 	uint32_t 	rcrfull;
141 	uint32_t 	rbr_empty;
142 	uint32_t 	rbrfull;
143 	uint32_t 	rbrlogpage;
144 	uint32_t 	cfiglogpage;
145 	uint32_t 	rcrto;
146 	uint32_t 	rcrthres;
147 	uint32_t 	mex;
148 	rdc_errlog_t	errlog;
149 } nxge_rx_ring_stats_t, *p_nxge_rx_ring_stats_t;
150 
151 typedef struct _nxge_rdc_sys_stats {
152 	uint32_t	pre_par;
153 	uint32_t	sha_par;
154 	uint32_t	id_mismatch;
155 	uint32_t	ipp_eop_err;
156 	uint32_t	zcp_eop_err;
157 } nxge_rdc_sys_stats_t, *p_nxge_rdc_sys_stats_t;
158 
159 /*
160  * Software reserved buffer offset
161  */
162 typedef struct _nxge_rxbuf_off_hdr_t {
163 	uint32_t		index;
164 } nxge_rxbuf_off_hdr_t, *p_nxge_rxbuf_off_hdr_t;
165 
166 
167 typedef struct _rx_msg_t {
168 	nxge_os_dma_common_t	buf_dma;
169 	nxge_os_mutex_t 	lock;
170 	struct _nxge_t		*nxgep;
171 	struct _rx_rbr_ring_t	*rx_rbr_p;
172 	boolean_t 		spare_in_use;
173 	boolean_t 		free;
174 	uint32_t 		ref_cnt;
175 #ifdef RXBUFF_USE_SEPARATE_UP_CNTR
176 	uint32_t 		pass_up_cnt;
177 	boolean_t 		release;
178 #endif
179 	nxge_os_frtn_t 		freeb;
180 	size_t 			bytes_arrived;
181 	size_t 			bytes_expected;
182 	size_t 			block_size;
183 	uint32_t		block_index;
184 	uint32_t 		pkt_buf_size;
185 	uint32_t 		pkt_buf_size_code;
186 	uint32_t 		max_pkt_bufs;
187 	uint32_t		cur_usage_cnt;
188 	uint32_t		max_usage_cnt;
189 	uchar_t			*buffer;
190 	uint32_t 		pri;
191 	uint32_t 		shifted_addr;
192 	boolean_t		use_buf_pool;
193 	p_mblk_t 		rx_mblk_p;
194 	boolean_t		rx_use_bcopy;
195 } rx_msg_t, *p_rx_msg_t;
196 
197 typedef struct _rx_dma_handle_t {
198 	nxge_os_dma_handle_t	dma_handle;	/* DMA handle	*/
199 	nxge_os_acc_handle_t	acc_handle;	/* DMA memory handle */
200 	npi_handle_t		npi_handle;
201 } rx_dma_handle_t, *p_rx_dma_handle_t;
202 
203 
204 /* Receive Completion Ring */
205 typedef struct _rx_rcr_ring_t {
206 	nxge_os_dma_common_t	rcr_desc;
207 
208 	struct _nxge_t		*nxgep;
209 
210 	p_nxge_rx_ring_stats_t	rdc_stats;
211 
212 	boolean_t		poll_flag;	/* B_TRUE, if polling mode */
213 
214 	rcrcfig_a_t		rcr_cfga;
215 	rcrcfig_b_t		rcr_cfgb;
216 
217 	nxge_os_mutex_t 	lock;
218 	uint16_t		index;
219 	uint16_t		rdc;
220 	boolean_t		full_hdr_flag;	 /* 1: 18 bytes header */
221 	uint16_t		sw_priv_hdr_len; /* 0 - 192 bytes (SW) */
222 	uint32_t 		comp_size;	 /* # of RCR entries */
223 	uint64_t		rcr_addr;
224 	uint_t 			comp_wrap_mask;
225 	uint_t 			comp_rd_index;
226 	uint_t 			comp_wt_index;
227 
228 	p_rcr_entry_t		rcr_desc_first_p;
229 	p_rcr_entry_t		rcr_desc_first_pp;
230 	p_rcr_entry_t		rcr_desc_last_p;
231 	p_rcr_entry_t		rcr_desc_last_pp;
232 
233 	p_rcr_entry_t		rcr_desc_rd_head_p;	/* software next read */
234 	p_rcr_entry_t		rcr_desc_rd_head_pp;
235 
236 	uint64_t		rcr_tail_pp;
237 	uint64_t		rcr_head_pp;
238 	struct _rx_rbr_ring_t	*rx_rbr_p;
239 	uint32_t		intr_timeout;
240 	uint32_t		intr_threshold;
241 	uint64_t		max_receive_pkts;
242 	mac_ring_handle_t	rcr_mac_handle;
243 	uint64_t		rcr_gen_num;
244 	uint32_t		rcvd_pkt_bytes; /* Received bytes of a packet */
245 	p_nxge_ldv_t		ldvp;
246 	p_nxge_ldg_t		ldgp;
247 	boolean_t		started;
248 } rx_rcr_ring_t, *p_rx_rcr_ring_t;
249 
250 
251 
252 /* Buffer index information */
253 typedef struct _rxbuf_index_info_t {
254 	uint32_t buf_index;
255 	uint32_t start_index;
256 	uint32_t buf_size;
257 	uint64_t dvma_addr;
258 	uint64_t kaddr;
259 } rxbuf_index_info_t, *p_rxbuf_index_info_t;
260 
261 /*
262  * Buffer index information
263  */
264 typedef struct _rxring_info_t {
265 	uint32_t hint[RCR_N_PKTBUF_SZ];
266 	uint32_t block_size_mask;
267 	uint16_t max_iterations;
268 	rxbuf_index_info_t buffer[NXGE_DMA_BLOCK];
269 } rxring_info_t, *p_rxring_info_t;
270 
271 
272 typedef enum {
273 	RBR_POSTING = 1,	/* We may post rx buffers. */
274 	RBR_UNMAPPING,		/* We are in the process of unmapping. */
275 	RBR_UNMAPPED		/* The ring is unmapped. */
276 } rbr_state_t;
277 
278 
279 /* Receive Buffer Block Ring */
280 typedef struct _rx_rbr_ring_t {
281 	nxge_os_dma_common_t	rbr_desc;
282 	p_rx_msg_t 		*rx_msg_ring;
283 	p_nxge_dma_common_t 	*dma_bufp;
284 	rbr_cfig_a_t		rbr_cfga;
285 	rbr_cfig_b_t		rbr_cfgb;
286 	rbr_kick_t		rbr_kick;
287 	log_page_vld_t		page_valid;
288 	log_page_mask_t		page_mask_1;
289 	log_page_mask_t		page_mask_2;
290 	log_page_value_t	page_value_1;
291 	log_page_value_t	page_value_2;
292 	log_page_relo_t		page_reloc_1;
293 	log_page_relo_t		page_reloc_2;
294 	log_page_hdl_t		page_hdl;
295 
296 	boolean_t		cfg_set;
297 
298 	nxge_os_mutex_t		lock;
299 	nxge_os_mutex_t		post_lock;
300 	uint16_t		index;
301 	struct _nxge_t		*nxgep;
302 	uint16_t		rdc;
303 	uint16_t		rdc_grp_id;
304 	uint_t 			rbr_max_size;
305 	uint64_t		rbr_addr;
306 	uint_t 			rbr_wrap_mask;
307 	uint_t 			rbb_max;
308 	uint_t 			rbb_added;
309 	uint_t			block_size;
310 	uint_t			num_blocks;
311 	uint_t			tnblocks;
312 	uint_t			pkt_buf_size0;
313 	uint_t			pkt_buf_size0_bytes;
314 	uint_t			npi_pkt_buf_size0;
315 	uint_t			pkt_buf_size1;
316 	uint_t			pkt_buf_size1_bytes;
317 	uint_t			npi_pkt_buf_size1;
318 	uint_t			pkt_buf_size2;
319 	uint_t			pkt_buf_size2_bytes;
320 	uint_t			npi_pkt_buf_size2;
321 
322 	uint32_t		*rbr_desc_vp;
323 
324 	p_rx_rcr_ring_t		rx_rcr_p;
325 
326 	uint_t 			rbr_wr_index;
327 	uint_t 			rbr_rd_index;
328 
329 	rxring_info_t  *ring_info;
330 #if	defined(sun4v) && defined(NIU_LP_WORKAROUND)
331 	uint64_t		hv_rx_buf_base_ioaddr_pp;
332 	uint64_t		hv_rx_buf_ioaddr_size;
333 	uint64_t		hv_rx_cntl_base_ioaddr_pp;
334 	uint64_t		hv_rx_cntl_ioaddr_size;
335 	boolean_t		hv_set;
336 #endif
337 	uint_t 			rbr_consumed;
338 	uint_t 			rbr_threshold_hi;
339 	uint_t 			rbr_threshold_lo;
340 	nxge_rxbuf_type_t	rbr_bufsize_type;
341 	boolean_t		rbr_use_bcopy;
342 
343 	/*
344 	 * <rbr_ref_cnt> is a count of those receive buffers which
345 	 * have been loaned to the kernel.  We will not free this
346 	 * ring until the reference count reaches zero (0).
347 	 */
348 	uint32_t		rbr_ref_cnt;
349 	rbr_state_t		rbr_state; /* POSTING, etc */
350 	/*
351 	 * Receive buffer allocation types:
352 	 *   ddi_dma_mem_alloc(), contig_mem_alloc(), kmem_alloc()
353 	 */
354 	buf_alloc_type_t	rbr_alloc_type;
355 } rx_rbr_ring_t, *p_rx_rbr_ring_t;
356 
357 /* Receive Mailbox */
358 typedef struct _rx_mbox_t {
359 	nxge_os_dma_common_t	rx_mbox;
360 	rxdma_cfig1_t		rx_cfg1;
361 	rxdma_cfig2_t		rx_cfg2;
362 	uint64_t		mbox_addr;
363 	boolean_t		cfg_set;
364 
365 	nxge_os_mutex_t 	lock;
366 	uint16_t		index;
367 	struct _nxge_t		*nxgep;
368 	uint16_t		rdc;
369 } rx_mbox_t, *p_rx_mbox_t;
370 
371 
372 typedef struct _rx_rbr_rings_t {
373 	p_rx_rbr_ring_t 	*rbr_rings;
374 	uint32_t		ndmas;
375 	boolean_t		rxbuf_allocated;
376 } rx_rbr_rings_t, *p_rx_rbr_rings_t;
377 
378 typedef struct _rx_rcr_rings_t {
379 	p_rx_rcr_ring_t 	*rcr_rings;
380 	uint32_t		ndmas;
381 	boolean_t		cntl_buf_allocated;
382 } rx_rcr_rings_t, *p_rx_rcr_rings_t;
383 
384 typedef struct _rx_mbox_areas_t {
385 	p_rx_mbox_t 		*rxmbox_areas;
386 	uint32_t		ndmas;
387 	boolean_t		mbox_allocated;
388 } rx_mbox_areas_t, *p_rx_mbox_areas_t;
389 
390 /*
391  * Global register definitions per chip and they are initialized
392  * using the function zero control registers.
393  * .
394  */
395 
396 typedef struct _rxdma_globals {
397 	boolean_t		mode32;
398 	uint16_t		rxdma_ck_div_cnt;
399 	uint16_t		rxdma_red_ran_init;
400 	uint32_t		rxdma_eing_timeout;
401 } rxdma_globals_t, *p_rxdma_globals;
402 
403 
404 /*
405  * Receive DMA Prototypes.
406  */
407 nxge_status_t nxge_init_rxdma_channels(p_nxge_t);
408 void nxge_uninit_rxdma_channels(p_nxge_t);
409 
410 nxge_status_t nxge_init_rxdma_channel(p_nxge_t, int);
411 void nxge_uninit_rxdma_channel(p_nxge_t, int);
412 
413 nxge_status_t nxge_init_rxdma_channel_rcrflush(p_nxge_t, uint8_t);
414 nxge_status_t nxge_reset_rxdma_channel(p_nxge_t, uint16_t);
415 nxge_status_t nxge_init_rxdma_channel_cntl_stat(p_nxge_t,
416 	uint16_t, p_rx_dma_ctl_stat_t);
417 nxge_status_t nxge_enable_rxdma_channel(p_nxge_t,
418 	uint16_t, p_rx_rbr_ring_t, p_rx_rcr_ring_t,
419 	p_rx_mbox_t);
420 nxge_status_t nxge_init_rxdma_channel_event_mask(p_nxge_t,
421 		uint16_t, p_rx_dma_ent_msk_t);
422 
423 nxge_status_t nxge_rxdma_hw_mode(p_nxge_t, boolean_t);
424 void nxge_hw_start_rx(p_nxge_t);
425 void nxge_fixup_rxdma_rings(p_nxge_t);
426 nxge_status_t nxge_dump_rxdma_channel(p_nxge_t, uint8_t);
427 
428 void nxge_rxdma_fix_channel(p_nxge_t, uint16_t);
429 
430 mblk_t *nxge_rx_poll(void *, int);
431 int nxge_enable_poll(void *);
432 int nxge_disable_poll(void *);
433 
434 void nxge_rxdma_regs_dump_channels(p_nxge_t);
435 nxge_status_t nxge_rxdma_handle_sys_errors(p_nxge_t);
436 void nxge_rxdma_inject_err(p_nxge_t, uint32_t, uint8_t);
437 
438 extern nxge_status_t nxge_alloc_rx_mem_pool(p_nxge_t);
439 extern nxge_status_t nxge_alloc_rxb(p_nxge_t nxgep, int channel);
440 extern void nxge_free_rxb(p_nxge_t nxgep, int channel);
441 
442 int nxge_get_rxring_index(p_nxge_t, int, int);
443 
444 #ifdef	__cplusplus
445 }
446 #endif
447 
448 #endif	/* _SYS_NXGE_NXGE_RXDMA_H */
449