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rmixl_fmn.c revision 1.1.2.5
      1 /*	$NetBSD: rmixl_fmn.c,v 1.1.2.5 2011/02/05 06:11:16 cliff Exp $	*/
      2 /*-
      3  * Copyright (c) 2010 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Cliff Neighbors.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "opt_ddb.h"
     32 
     33 #include <sys/cdefs.h>
     34 #include <sys/param.h>
     35 #include <sys/cpu.h>
     36 #include <mips/cpuregs.h>
     37 #include <mips/rmi/rmixlreg.h>
     38 #include <mips/rmi/rmixlvar.h>
     39 #include <mips/rmi/rmixl_intr.h>
     40 #include <mips/rmi/rmixl_fmnvar.h>
     41 
     42 #ifdef FMN_DEBUG
     43 # define DPRINTF(x)	do { printf x ; } while(0)
     44 #else
     45 # define DPRINTF(x)
     46 #endif
     47 
     48 #ifdef DIAGNOSTIC
     49 # define DIAG_PRF(x)	do { printf x ; } while(0)
     50 #else
     51 # define DIAG_PRF(x)
     52 #endif
     53 
     54 
     55 
     56 /*
     57  * index CPU-dependent table by (global) bucket ID to obtain logical Station ID
     58  * see Table 12.1 in the XLS PRM
     59  */
     60 /* use this table for XLS6xx, XLS4xx */
     61 static const int station_xls_4xx[] = {
     62 	[0 ... 7]	= RMIXLS_FMN_STID_CORE0,
     63 	[8 ... 15]	= RMIXLS_FMN_STID_CORE1,
     64 	[16 ... 23]	= RMIXLS_FMN_STID_CORE2,
     65 	[24 ... 31]	= RMIXLS_FMN_STID_CORE3,
     66 	[32 ... 63]	= RMIXLS_FMN_STID_RESERVED,
     67 	[64 ... 71]	= RMIXLS_FMN_STID_PCIE,
     68 	[72 ... 79]	= RMIXLS_FMN_STID_RESERVED,
     69 	[80 ... 87]	= RMIXLS_FMN_STID_GMAC_Q1,
     70 	[88 ... 95]	= RMIXLS_FMN_STID_RESERVED,
     71 	[96 ... 103]	= RMIXLS_FMN_STID_GMAC_Q0,
     72 	[104 ... 107]	= RMIXLS_FMN_STID_DMA,
     73 	[108 ... 109]	= RMIXLS_FMN_STID_CDE,
     74 	[110 ... 119]	= RMIXLS_FMN_STID_RESERVED,
     75 	[120 ... 127]	= RMIXLS_FMN_STID_SAE,
     76 };
     77 
     78 /* use this table for XLS408Lite, XLS404Lite */
     79 static const int station_xls_4xx_lite[] = {
     80 	[0 ... 7]	= RMIXLS_FMN_STID_CORE0,
     81 	[8 ... 15]	= RMIXLS_FMN_STID_CORE1,
     82 	[16 ... 23]	= RMIXLS_FMN_STID_CORE2,
     83 	[24 ... 31]	= RMIXLS_FMN_STID_CORE3,
     84 	[32 ... 79]	= RMIXLS_FMN_STID_RESERVED,
     85 	[80 ... 87]	= RMIXLS_FMN_STID_GMAC_Q1,
     86 	[88 ... 95]	= RMIXLS_FMN_STID_RESERVED,
     87 	[96 ... 103]	= RMIXLS_FMN_STID_GMAC_Q0,
     88 	[104 ... 107]	= RMIXLS_FMN_STID_DMA,
     89 	[108 ... 109]	= RMIXLS_FMN_STID_CDE,
     90 	[110 ... 115]	= RMIXLS_FMN_STID_RESERVED,
     91 	[116 ... 119]	= RMIXLS_FMN_STID_PCIE,
     92 	[120 ... 127]	= RMIXLS_FMN_STID_SAE,
     93 };
     94 
     95 /* use this table for XLS2xx */
     96 static const int station_xls_2xx[] = {
     97 	[0 ... 7]	= RMIXLS_FMN_STID_CORE0,
     98 	[8 ... 15]	= RMIXLS_FMN_STID_CORE1,
     99 	[16 ... 23]	= RMIXLS_FMN_STID_CORE2,
    100 	[24 ... 31]	= RMIXLS_FMN_STID_CORE3,
    101 	[32 ... 63]	= RMIXLS_FMN_STID_RESERVED,
    102 	[64 ... 71]	= RMIXLS_FMN_STID_PCIE,
    103 	[72 ... 95]	= RMIXLS_FMN_STID_RESERVED,
    104 	[96 ... 103]	= RMIXLS_FMN_STID_GMAC_Q0,
    105 	[104 ... 107]	= RMIXLS_FMN_STID_DMA,
    106 	[108 ... 119]	= RMIXLS_FMN_STID_RESERVED,
    107 	[120 ... 127]	= RMIXLS_FMN_STID_SAE,
    108 };
    109 
    110 /* use this table for XLS1xx */
    111 static const int station_xls_1xx[] = {
    112 	[0 ... 7]	= RMIXLS_FMN_STID_CORE0,
    113 	[8 ... 15]	= RMIXLS_FMN_STID_CORE1,
    114 	[16 ... 23]	= RMIXLS_FMN_STID_CORE2,
    115 	[24 ... 31]	= RMIXLS_FMN_STID_CORE3,
    116 	[32 ... 63]	= RMIXLS_FMN_STID_RESERVED,
    117 	[64 ... 71]	= RMIXLS_FMN_STID_PCIE,
    118 	[72 ... 95]	= RMIXLS_FMN_STID_RESERVED,
    119 	[96 ... 101]	= RMIXLS_FMN_STID_GMAC_Q0,
    120 	[102 ... 103]	= RMIXLS_FMN_STID_RESERVED,
    121 	[104 ... 107]	= RMIXLS_FMN_STID_DMA,
    122 	[108 ... 119]	= RMIXLS_FMN_STID_RESERVED,
    123 	[120 ... 127]	= RMIXLS_FMN_STID_SAE,
    124 };
    125 
    126 /* use this table for XLRxxx */
    127 static const int station_xlr_xxx[] = {
    128 	[0 ... 7]	= RMIXLR_FMN_STID_CORE0,
    129 	[8 ... 15]	= RMIXLR_FMN_STID_CORE1,
    130 	[16 ... 23]	= RMIXLR_FMN_STID_CORE2,
    131 	[24 ... 31]	= RMIXLR_FMN_STID_CORE3,
    132 	[32 ... 39]	= RMIXLR_FMN_STID_CORE4,
    133 	[40 ... 47]	= RMIXLR_FMN_STID_CORE5,
    134 	[48 ... 55]	= RMIXLR_FMN_STID_CORE6,
    135 	[56 ... 63]	= RMIXLR_FMN_STID_CORE7,
    136 	[64 ... 79]	= RMIXLR_FMN_STID_TXRX_0,
    137 	[80 ... 95]	= RMIXLR_FMN_STID_TXRX_1,
    138 	[96 ... 103]	= RMIXLR_FMN_STID_RGMII,
    139 	[104 ... 107]	= RMIXLR_FMN_STID_DMA,
    140 	[108 ... 111]	= RMIXLR_FMN_STID_RESERVED,
    141 	[112 ... 113]	= RMIXLR_FMN_STID_FREE_0,
    142 	[114 ... 115]	= RMIXLR_FMN_STID_FREE_0,
    143 	[116 ... 119]	= RMIXLR_FMN_STID_RESERVED,
    144 	[120 ... 127]	= RMIXLR_FMN_STID_SAE,
    145 };
    146 
    147 typedef struct fmn_station_info {
    148 	const char     *si_name;
    149 	const u_int	si_buckets_max;
    150 	const u_int	si_stid_first;
    151 	const u_int	si_stid_last;
    152 	const u_int	si_bucket_size_dflt;
    153 	const u_int	si_credits_min;
    154 	const u_int	si_regbase;
    155 } fmn_station_info_t;
    156 
    157 /* use this table for XLS6xx, XLS4xx */
    158 static const fmn_station_info_t station_info_xls_4xx[RMIXLS_FMN_NSTID] = {
    159 	[RMIXLS_FMN_STID_CORE0]   = { "core0",	8,   0,   7,  32, 4, 0 },
    160 	[RMIXLS_FMN_STID_CORE1]   = { "core1",	8,   8,  15,  32, 4, 0 },
    161 	[RMIXLS_FMN_STID_CORE2]   = { "core2",	8,  16,  23,  32, 4, 0 },
    162 	[RMIXLS_FMN_STID_CORE3]   = { "core3",	8,  24,  31,  32, 4, 0 },
    163 	[RMIXLS_FMN_STID_GMAC_Q0] = { "gmac_q0",	3,  80,  87,  32, 0, RMIXL_IO_DEV_GMAC_0 },
    164 	[RMIXLS_FMN_STID_GMAC_Q1] = { "gmac_q1",	3,  96, 103,  32, 0, RMIXL_IO_DEV_GMAC_4 },
    165 	[RMIXLS_FMN_STID_DMA]     = { "dma",	4, 104, 107,  64, 0, RMIXL_IO_DEV_DMA },
    166 	[RMIXLS_FMN_STID_CDE]     = { "cde",	4, 108, 109, 128, 0, RMIXL_IO_DEV_CDE },
    167 	[RMIXLS_FMN_STID_PCIE]    = { "pcie",	8,  64,  71,  32, 0, RMIXL_IO_DEV_PCIE_BE },
    168 	[RMIXLS_FMN_STID_SAE]     = { "sae",	2, 120, 121, 128, 0, RMIXL_IO_DEV_SAE },
    169 };
    170 
    171 /* use this table for XLS4xxLite */
    172 static const fmn_station_info_t station_info_xls_4xx_lite[RMIXLS_FMN_NSTID] = {
    173 	[RMIXLS_FMN_STID_CORE0]   = { "core0",	8,   0,   7,  32, 4, 0 },
    174 	[RMIXLS_FMN_STID_CORE1]   = { "core1",	8,   8,  15,  32, 4, 0 },
    175 	[RMIXLS_FMN_STID_CORE2]   = { "core2",	8,  16,  23,  32, 4, 0 },
    176 	[RMIXLS_FMN_STID_CORE3]   = { "core3",	8,  24,  31,  32, 4, 0 },
    177 	[RMIXLS_FMN_STID_GMAC_Q0] = { "gmac_q0",	3,  80,  87,  32, 0, RMIXL_IO_DEV_GMAC_0 },
    178 	[RMIXLS_FMN_STID_GMAC_Q1] = { "gmac_q1",	3,  96, 103,  32, 0, RMIXL_IO_DEV_GMAC_4 },
    179 	[RMIXLS_FMN_STID_DMA]     = { "dma",	4, 104, 107,  64, 0, RMIXL_IO_DEV_DMA },
    180 	[RMIXLS_FMN_STID_CDE]     = { "cde",	4, 108, 109, 128, 0, RMIXL_IO_DEV_CDE },
    181 	[RMIXLS_FMN_STID_PCIE]    = { "pcie",	4, 116, 119,  64, 0, RMIXL_IO_DEV_PCIE_BE },
    182 	[RMIXLS_FMN_STID_SAE]     = { "sae",	2, 120, 121, 128, 0, RMIXL_IO_DEV_SAE },
    183 };
    184 
    185 /* use this table for XLS2xx */
    186 static const fmn_station_info_t station_info_xls_2xx[RMIXLS_FMN_NSTID] = {
    187 	[RMIXLS_FMN_STID_CORE0]   = { "core0",	8,   0,   7,  32, 4, 0 },
    188 	[RMIXLS_FMN_STID_CORE1]   = { "core1",	8,   8,  15,  32, 4, 0 },
    189 	[RMIXLS_FMN_STID_CORE2]   = { "core2",	8,  16,  23,  32, 4, 0 },
    190 	[RMIXLS_FMN_STID_CORE3]   = { "core3",	8,  24,  31,  32, 4, 0 },
    191 	[RMIXLS_FMN_STID_GMAC_Q0] = { "gmac_q0",	3,  96, 103,  32, 0, RMIXL_IO_DEV_GMAC_0 },
    192 	[RMIXLS_FMN_STID_DMA]     = { "dma",	4, 104, 107,  64, 0, RMIXL_IO_DEV_DMA },
    193 	[RMIXLS_FMN_STID_PCIE]    = { "pcie",	8,  64,  71,  32, 0, RMIXL_IO_DEV_PCIE_BE },
    194 	[RMIXLS_FMN_STID_SAE]     = { "sae",	2, 120, 121, 128, 0, RMIXL_IO_DEV_SAE },
    195 };
    196 
    197 /* use this table for XLS1xx */
    198 static const fmn_station_info_t station_info_xls_1xx[RMIXLS_FMN_NSTID] = {
    199 	[RMIXLS_FMN_STID_CORE0]   = { "core0",	8,   0,   7,  32, 4, 0 },
    200 	[RMIXLS_FMN_STID_CORE1]   = { "core1",	8,   8,  15,  32, 4, 0 },
    201 	[RMIXLS_FMN_STID_CORE2]   = { "core2",	8,  16,  23,  32, 4, 0 },
    202 	[RMIXLS_FMN_STID_CORE3]   = { "core3",	8,  24,  31,  32, 4, 0 },
    203 	[RMIXLS_FMN_STID_GMAC_Q0] = { "gmac_q0",	3,  96, 101,  32, 0, RMIXL_IO_DEV_GMAC_0 },
    204 	[RMIXLS_FMN_STID_DMA]     = { "dma",	4, 104, 107,  64, 0, RMIXL_IO_DEV_PCIE_BE },
    205 	[RMIXLS_FMN_STID_PCIE]    = { "pcie",	4,  64,  67,  32, 0, RMIXL_IO_DEV_PCIE_BE },
    206 	[RMIXLS_FMN_STID_SAE]     = { "sae",	2, 120, 121, 128, 0, RMIXL_IO_DEV_SAE },
    207 };
    208 
    209 /*
    210  * use this table for XLRxxx
    211  * caution:
    212  * - the XGMII/SPI4 stations si_regbase are 'special'
    213  * - the RGMII station si_regbase is 'special'
    214  */
    215 static const fmn_station_info_t station_info_xlr_xxx[RMIXLR_FMN_NSTID] = {
    216 	[RMIXLR_FMN_STID_CORE0]   = { "core0",	8,   0,   7,  32, 4, 0 },
    217 	[RMIXLR_FMN_STID_CORE1]   = { "core1",	8,   8,  15,  32, 4, 0 },
    218 	[RMIXLR_FMN_STID_CORE2]   = { "core2",	8,  16,  23,  32, 4, 0 },
    219 	[RMIXLR_FMN_STID_CORE3]   = { "core3",	8,  24,  31,  32, 4, 0 },
    220 	[RMIXLR_FMN_STID_CORE4]   = { "core4",	8,  32,  39,  32, 4, 0 },
    221 	[RMIXLR_FMN_STID_CORE5]   = { "core5",	8,  40,  47,  32, 4, 0 },
    222 	[RMIXLR_FMN_STID_CORE6]   = { "core6",	8,  48,  55,  32, 4, 0 },
    223 	[RMIXLR_FMN_STID_CORE7]   = { "core7",	8,  56,  63,  32, 4, 0 },
    224 	[RMIXLR_FMN_STID_TXRX_0]  = { "txrx0",	1,  64,  79,  16, 0, RMIXL_IO_DEV_XGMAC_A },
    225 	[RMIXLR_FMN_STID_TXRX_1]  = { "txrx1",	1,  80,  95,  16, 0, RMIXL_IO_DEV_XGMAC_B },
    226 	[RMIXLR_FMN_STID_RGMII]   = { "rgmii",	8,  96, 103,  32, 0, RMIXL_IO_DEV_GMAC_A },
    227 	[RMIXLR_FMN_STID_DMA]     = { "dma",	4, 104, 107,  64, 0, RMIXL_IO_DEV_DMA },
    228 	[RMIXLR_FMN_STID_FREE_0]  = { "free0",	2, 112, 113, 128, 0, RMIXL_IO_DEV_XGMAC_A },
    229 	[RMIXLR_FMN_STID_FREE_1]  = { "free1",	2, 114, 115, 128, 0, RMIXL_IO_DEV_XGMAC_B },
    230 	[RMIXLR_FMN_STID_SAE]     = { "sae",	5, 120, 124,  32, 0, RMIXL_IO_DEV_SAE },
    231 };
    232 
    233 
    234 typedef struct fmn_intrhand {
    235 	int		(*ih_func)(void *, rmixl_fmn_rxmsg_t *);
    236 	void		*ih_arg;
    237 	struct evcnt	ih_count;
    238 } fmn_intrhand_t;
    239 
    240 /*
    241  * per-core FMN structure
    242  */
    243 typedef struct fmn {
    244 	kmutex_t		       *fmn_lock;
    245 	u_int				fmn_core;
    246 	u_int				fmn_thread;
    247 	u_int				fmn_nstid;
    248 	const int		       *fmn_stidtab;
    249 	const fmn_station_info_t       *fmn_stinfo;
    250 	void			       *fmn_ih;
    251 	fmn_intrhand_t			fmn_intrhand[RMIXL_FMN_NSTID];
    252 } fmn_t;
    253 
    254 static fmn_t fmn_store[1 << 10];	/* index by cpuid) *//* XXX assumes 1 node */
    255 #define NFMN	(sizeof(fmn_store) / sizeof(fmn_store[0]))
    256 
    257 static fmn_t *
    258 fmn_lookup(cpuid_t cpuid)
    259 {
    260 	KASSERT(cpuid < (cpuid_t)NFMN);
    261 	return &fmn_store[cpuid];
    262 }
    263 
    264 static void rmixl_fmn_init_core_xlr(fmn_t *);
    265 static void rmixl_fmn_init_core_xls(fmn_t *);
    266 static void	rmixl_fmn_config_noncore(fmn_t *);
    267 static void	rmixl_fmn_config_core(fmn_t *);
    268 #ifdef NOTYET
    269 static int	rmixl_fmn_intr_dispatch(void *);
    270 #endif	/* NOTYET */
    271 static int	rmixl_fmn_msg_recv_subr(u_int, rmixl_fmn_rxmsg_t *);
    272 
    273 #ifdef FMN_DEBUG
    274 void	rmixl_fmn_cp2_dump(void);
    275 void	rmixl_fmn_cc_dump(void);
    276 #endif
    277 
    278 /*
    279  * macros used because mtc2, mfc2, dmtc2, dmfc2 instructions
    280  * must use literal values for rd and sel operands
    281  * so let the compiler sort it out
    282  */
    283 
    284 /*
    285  * write v to all 8 SELs for given RD
    286  */
    287 #define FMN_CP2_4SEL_READ(rd, sel, vp)					\
    288 	do {								\
    289 		uint32_t *rp = vp;					\
    290 		RMIXL_MFC2(rd, sel,   rp[0]);				\
    291 		RMIXL_MFC2(rd, sel+1, rp[1]);				\
    292 		RMIXL_MFC2(rd, sel+2, rp[2]);				\
    293 		RMIXL_MFC2(rd, sel+3, rp[3]);				\
    294 	} while (0)
    295 
    296 /*
    297  * write v to all 8 SELs for given RD
    298  */
    299 #define FMN_CP2_4SEL_WRITE(rd, sel, v)					\
    300 	do {								\
    301 		RMIXL_MTC2(rd, sel,   v);				\
    302 		RMIXL_MTC2(rd, sel+1, v);				\
    303 		RMIXL_MTC2(rd, sel+2, v);				\
    304 		RMIXL_MTC2(rd, sel+3, v);				\
    305 	} while (0)
    306 
    307 #define FMN_CP2_8SEL_WRITE(rd, v)					\
    308 	do {								\
    309 		RMIXL_MTC2(rd, 0, v);					\
    310 		RMIXL_MTC2(rd, 1, v);					\
    311 		RMIXL_MTC2(rd, 2, v);					\
    312 		RMIXL_MTC2(rd, 3, v);					\
    313 		RMIXL_MTC2(rd, 4, v);					\
    314 		RMIXL_MTC2(rd, 5, v);					\
    315 		RMIXL_MTC2(rd, 6, v);					\
    316 		RMIXL_MTC2(rd, 7, v);					\
    317 	} while (0)
    318 
    319 
    320 #define FMN_CP2_SEL_CASE_READ(rd, sel, v)				\
    321 	case sel:							\
    322 		RMIXL_MFC2(rd, sel, v);					\
    323 		break
    324 #define FMN_CP2_SEL_CASE_WRITE(rd, sel, v)				\
    325 	case sel:							\
    326 		RMIXL_MTC2(rd, sel, v);					\
    327 		break
    328 /*
    329  * read/write a single arbitrary sel for the given rd
    330  */
    331 #define FMN_CP2_SEL_SWITCH_RW(rw, rd, sel, val)				\
    332 	do {								\
    333 		switch (sel) {						\
    334 			FMN_CP2_SEL_CASE_ ## rw(rd, 0, val);		\
    335 			FMN_CP2_SEL_CASE_ ## rw(rd, 1, val);		\
    336 			FMN_CP2_SEL_CASE_ ## rw(rd, 2, val);		\
    337 			FMN_CP2_SEL_CASE_ ## rw(rd, 3, val);		\
    338 			FMN_CP2_SEL_CASE_ ## rw(rd, 4, val);		\
    339 			FMN_CP2_SEL_CASE_ ## rw(rd, 5, val);		\
    340 			FMN_CP2_SEL_CASE_ ## rw(rd, 6, val);		\
    341 			FMN_CP2_SEL_CASE_ ## rw(rd, 7, val);		\
    342 			default:					\
    343 				panic("%s:%d: bad sel %d\n",		\
    344 					__func__, __LINE__, sel);	\
    345 		}							\
    346 	} while (0)
    347 
    348 #define FMN_CP2_RD_CASE_RW(rw, rd, sel, val)				\
    349 	case rd:							\
    350 		FMN_CP2_SEL_SWITCH_RW(rw, rd, sel, val);		\
    351 		break
    352 /*
    353  * read/write a single arbitrary Credit Counter at (rd, sel)
    354  * eg:
    355  *	FMN_CP2_RD_SWITCH_RW(READ,  16, 2, val)
    356  *	FMN_CP2_RD_SWITCH_RW(WRITE, 18, 0, val)
    357  */
    358 #define FMN_CP2_RD_SWITCH_RW(rw, rd, sel, val)				\
    359 	do {								\
    360 		switch(rd) {						\
    361 			FMN_CP2_RD_CASE_RW(rw, 0,  sel, val);		\
    362 			FMN_CP2_RD_CASE_RW(rw, 1,  sel, val);		\
    363 			FMN_CP2_RD_CASE_RW(rw, 2,  sel, val);		\
    364 			FMN_CP2_RD_CASE_RW(rw, 3,  sel, val);		\
    365 			FMN_CP2_RD_CASE_RW(rw, 4,  sel, val);		\
    366 			FMN_CP2_RD_CASE_RW(rw, 5,  sel, val);		\
    367 			FMN_CP2_RD_CASE_RW(rw, 6,  sel, val);		\
    368 			FMN_CP2_RD_CASE_RW(rw, 7,  sel, val);		\
    369 			FMN_CP2_RD_CASE_RW(rw, 8,  sel, val);		\
    370 			FMN_CP2_RD_CASE_RW(rw, 9,  sel, val);		\
    371 			FMN_CP2_RD_CASE_RW(rw, 10, sel, val);		\
    372 			FMN_CP2_RD_CASE_RW(rw, 11, sel, val);		\
    373 			FMN_CP2_RD_CASE_RW(rw, 12, sel, val);		\
    374 			FMN_CP2_RD_CASE_RW(rw, 13, sel, val);		\
    375 			FMN_CP2_RD_CASE_RW(rw, 14, sel, val);		\
    376 			FMN_CP2_RD_CASE_RW(rw, 15, sel, val);		\
    377 			FMN_CP2_RD_CASE_RW(rw, 16, sel, val);		\
    378 			FMN_CP2_RD_CASE_RW(rw, 17, sel, val);		\
    379 			FMN_CP2_RD_CASE_RW(rw, 18, sel, val);		\
    380 			FMN_CP2_RD_CASE_RW(rw, 19, sel, val);		\
    381 			FMN_CP2_RD_CASE_RW(rw, 20, sel, val);		\
    382 			FMN_CP2_RD_CASE_RW(rw, 21, sel, val);		\
    383 			FMN_CP2_RD_CASE_RW(rw, 22, sel, val);		\
    384 			FMN_CP2_RD_CASE_RW(rw, 23, sel, val);		\
    385 			FMN_CP2_RD_CASE_RW(rw, 24, sel, val);		\
    386 			FMN_CP2_RD_CASE_RW(rw, 25, sel, val);		\
    387 			FMN_CP2_RD_CASE_RW(rw, 26, sel, val);		\
    388 			FMN_CP2_RD_CASE_RW(rw, 27, sel, val);		\
    389 			FMN_CP2_RD_CASE_RW(rw, 28, sel, val);		\
    390 			FMN_CP2_RD_CASE_RW(rw, 29, sel, val);		\
    391 			FMN_CP2_RD_CASE_RW(rw, 30, sel, val);		\
    392 			FMN_CP2_RD_CASE_RW(rw, 31, sel, val);		\
    393 			default:					\
    394 				panic("%s:%d: bad regno %d\n",		\
    395 					__func__, __LINE__, rd);	\
    396 		}							\
    397 	} while (0)
    398 
    399 
    400 void
    401 rmixl_fmn_init(void)
    402 {
    403 	int cpu;
    404 	fmn_t *fmnp;
    405 	static bool once=false;
    406 
    407 	KASSERT(cpu_number() == 0);
    408 	fmnp = fmn_lookup(cpu_number());
    409 
    410 	if (once == true)
    411 		panic("%s: call only once!", __func__);
    412 	once = true;
    413 
    414 	for (cpu=0; cpu < NFMN; cpu++) {
    415 		fmnp[cpu].fmn_core = RMIXL_CPU_CORE(cpu);
    416 		fmnp[cpu].fmn_thread = RMIXL_CPU_THREAD(cpu);
    417 	}
    418 
    419 	rmixl_fmn_init_core();		/* for initial boot cpu (#0) */
    420 	rmixl_fmn_config_noncore(fmnp);	/* boot cpu initializes noncore */
    421 }
    422 
    423 /*
    424  * link to TX station ID table for RMI XLR type chip
    425  */
    426 static void
    427 rmixl_fmn_init_core_xlr(fmn_t *fmnp)
    428 {
    429 	fmnp->fmn_nstid = RMIXLR_FMN_NSTID;
    430 	fmnp->fmn_stidtab = station_xlr_xxx;
    431 	fmnp->fmn_stinfo = station_info_xlr_xxx;
    432 }
    433 
    434 /*
    435  * link to TX station ID table for RMI XLS type chip
    436  */
    437 static void
    438 rmixl_fmn_init_core_xls(fmn_t *fmnp)
    439 {
    440 	const fmn_station_info_t *info = NULL;
    441 	const int *tab = NULL;
    442 
    443 	switch (MIPS_PRID_IMPL(mips_options.mips_cpu_id)) {
    444 	case MIPS_XLS104:
    445 	case MIPS_XLS108:
    446 		tab = station_xls_1xx;
    447 		info = station_info_xls_1xx;
    448 		break;
    449 	case MIPS_XLS204:
    450 	case MIPS_XLS208:
    451 		tab = station_xls_2xx;
    452 		info = station_info_xls_2xx;
    453 		break;
    454 	case MIPS_XLS404:
    455 	case MIPS_XLS408:
    456 	case MIPS_XLS416:
    457 	case MIPS_XLS608:
    458 	case MIPS_XLS616:
    459 		tab = station_xls_4xx;
    460 		info = station_info_xls_4xx;
    461 		break;
    462 	case MIPS_XLS404LITE:
    463 	case MIPS_XLS408LITE:
    464 		tab = station_xls_4xx_lite;
    465 		info = station_info_xls_4xx_lite;
    466 		break;
    467 	default:
    468 		panic("%s: unknown PRID IMPL %#x\n", __func__,
    469 			MIPS_PRID_IMPL(mips_options.mips_cpu_id));
    470 	}
    471 
    472 	fmnp->fmn_nstid = RMIXLS_FMN_NSTID;
    473 	fmnp->fmn_stidtab = tab;
    474 	fmnp->fmn_stinfo = info;
    475 }
    476 
    477 void
    478 rmixl_fmn_init_core(void)
    479 {
    480 	fmn_t *fmnp;
    481 	kmutex_t *lk;
    482 
    483 	fmnp = fmn_lookup(cpu_number());
    484 	KASSERT(fmnp != NULL);
    485 	KASSERT(fmnp->fmn_core == RMIXL_CPU_CORE(cpu_number()));
    486 	KASSERT(fmnp->fmn_thread == RMIXL_CPU_THREAD(cpu_number()));
    487 
    488 	lk = mutex_obj_alloc(MUTEX_DEFAULT, RMIXL_FMN_INTR_IPL);
    489 	if (lk == NULL)
    490 		panic("%s: mutex_obj_alloc failed", __func__);
    491 	fmnp->fmn_lock = lk;
    492 
    493 	mutex_enter(fmnp->fmn_lock);
    494 
    495 	/*
    496 	 * do chip-dependent per-core FMN initialization
    497 	 */
    498 	switch(cpu_rmixl_chip_type(mips_options.mips_cpu)) {
    499 	case CIDFL_RMI_TYPE_XLR:
    500 		rmixl_fmn_init_core_xlr(fmnp);
    501 		break;
    502 	case CIDFL_RMI_TYPE_XLS:
    503 		rmixl_fmn_init_core_xls(fmnp);
    504 		break;
    505 	case CIDFL_RMI_TYPE_XLP:
    506 		panic("%s: RMI XLP not yet supported", __func__);
    507 	default:
    508 		panic("%s: RMI chip type %#x unknown", __func__,
    509 			cpu_rmixl_chip_type(mips_options.mips_cpu));
    510 	}
    511 
    512 	/*
    513 	 * thread #0 for each core owns 'global' CP2 regs
    514 	 */
    515 	if (fmnp->fmn_thread == 0)
    516 		rmixl_fmn_config_core(fmnp);
    517 
    518 	mutex_exit(fmnp->fmn_lock);
    519 }
    520 
    521 /*
    522  * rmixl_fmn_config_noncore
    523  *
    524  *	initialize bucket sizes and (minimum) credits for non-core stations to ZERO
    525  *	configured through memory write operations instead of CP2
    526  */
    527 static void
    528 rmixl_fmn_config_noncore(fmn_t *fmnp)
    529 {
    530 	for (u_int sid=0; sid < fmnp->fmn_nstid; sid++) {
    531 		u_int regoff = fmnp->fmn_stinfo[sid].si_regbase;
    532 		if (regoff != 0) {
    533 			u_int buckets_max = fmnp->fmn_stinfo[sid].si_buckets_max;
    534 			regoff += RMIXL_FMN_BS_FIRST;
    535 			for (u_int bucket=0; bucket < buckets_max; bucket++) {
    536 				RMIXL_IOREG_WRITE(regoff, 0);
    537 				regoff += sizeof(uint32_t);
    538 			}
    539 		}
    540 	}
    541 }
    542 
    543 /*
    544  * rmixl_fmn_config_core
    545  *
    546  *	- assumes fmn_mutex is owned
    547  *	- configure FMN
    548  *	- initialize bucket sizes and (minimum) credits for a core
    549  */
    550 static void
    551 rmixl_fmn_config_core(fmn_t *fmnp)
    552 {
    553 	const fmn_station_info_t *info = fmnp->fmn_stinfo;
    554 	uint32_t sts1;
    555 	uint32_t cfg;
    556 	uint32_t cp0_status;
    557 
    558 	KASSERT(mutex_owned(fmnp->fmn_lock) != 0);
    559 	KASSERT(fmnp->fmn_thread == 0);
    560 	cp0_status = rmixl_cp2_enable();
    561 
    562 	/* check/clear any pre-existing status1 error(s) */
    563 	RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 1, sts1);
    564 	if ((sts1 & RMIXL_MSG_STS1_ERRS) != 0)
    565 		RMIXL_MTC2(RMIXL_COP_2_MSG_STS, 1, sts1);
    566 
    567 	/* set up MsgConfig reg */
    568 	cfg = ((1 << RMIXL_MSG_CFG0_WMSHIFT)			/* watermark */
    569 	    |  (RMIXL_INTRVEC_FMN << RMIXL_MSG_CFG0_IV_SHIFT)	/* irq */
    570 	    |  (1 << RMIXL_MSG_CFG0_ITM_SHIFT)			/* thread mask */
    571 	    |   RMIXL_MSG_CFG0_WIE				/* watermark intr enb */
    572 	    |   RMIXL_MSG_CFG0_EIE);				/* rx not empty intr enb */
    573 	RMIXL_DMTC2(RMIXL_COP_2_MSG_CFG, 0, cfg);
    574 
    575 	/* disable trace mode, credit overrun intr, messaging errors intr */
    576 	RMIXL_DMTC2(RMIXL_COP_2_MSG_CFG, 0, 0);
    577 
    578 	/* XXX using 4 buckets per core */
    579 	KASSERT(4 <= info->si_buckets_max);
    580 
    581 	/*
    582 	 * initialize default sizes for core buckets
    583 	 * zero sizes for unused buckets
    584 	 */
    585 	KASSERT(info->si_buckets_max == 8);
    586 	uint32_t sz = info->si_bucket_size_dflt;
    587 	KASSERT((sz & ~RMIXL_MSG_BSZ_SIZE) == 0);
    588 	RMIXL_MTC2(RMIXL_COP_2_MSG_BSZ, 0, sz);
    589 	RMIXL_MTC2(RMIXL_COP_2_MSG_BSZ, 1, sz);
    590 	RMIXL_MTC2(RMIXL_COP_2_MSG_BSZ, 2, sz);
    591 	RMIXL_MTC2(RMIXL_COP_2_MSG_BSZ, 3, sz);
    592 	RMIXL_MTC2(RMIXL_COP_2_MSG_BSZ, 4, 0);
    593 	RMIXL_MTC2(RMIXL_COP_2_MSG_BSZ, 5, 0);
    594 	RMIXL_MTC2(RMIXL_COP_2_MSG_BSZ, 6, 0);
    595 	RMIXL_MTC2(RMIXL_COP_2_MSG_BSZ, 7, 0);
    596 
    597 	/*
    598 	 * configure minimum credits for each core, 4 buckets
    599 	 * zero all unused credit counters for this core
    600 	 */
    601 	uint32_t cr = info->si_credits_min;
    602 
    603 	FMN_CP2_4SEL_WRITE(RMIXL_COP_2_CREDITS,   0, cr);
    604 	FMN_CP2_4SEL_WRITE(RMIXL_COP_2_CREDITS,   4,  0);
    605 	FMN_CP2_4SEL_WRITE(RMIXL_COP_2_CREDITS+1, 0, cr);
    606 	FMN_CP2_4SEL_WRITE(RMIXL_COP_2_CREDITS+1, 4,  0);
    607 	FMN_CP2_4SEL_WRITE(RMIXL_COP_2_CREDITS+2, 0, cr);
    608 	FMN_CP2_4SEL_WRITE(RMIXL_COP_2_CREDITS+2, 4,  0);
    609 	FMN_CP2_4SEL_WRITE(RMIXL_COP_2_CREDITS+3, 0, cr);
    610 	FMN_CP2_4SEL_WRITE(RMIXL_COP_2_CREDITS+3, 4,  0);
    611 
    612 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+4,     0);
    613 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+5,     0);
    614 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+6,     0);
    615 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+7,     0);
    616 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+8,     0);
    617 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+9,     0);
    618 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+10,    0);
    619 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+11,    0);
    620 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+12,    0);
    621 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+13,    0);
    622 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+14,    0);
    623 	FMN_CP2_8SEL_WRITE(RMIXL_COP_2_CREDITS+15,    0);
    624 
    625 	RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 1, sts1);
    626 	KASSERT((sts1 & RMIXL_MSG_STS1_ERRS) == 0);
    627 
    628 	rmixl_cp2_restore(cp0_status);
    629 }
    630 
    631 void
    632 rmixl_fmn_init_cpu_intr(void)
    633 {
    634 	fmn_t *fmnp;
    635 
    636 	fmnp = fmn_lookup(cpu_number());
    637 	mutex_enter(fmnp->fmn_lock);
    638 
    639 	for (int i=0; i < fmnp->fmn_nstid; i++)
    640 		evcnt_attach_dynamic(&fmnp->fmn_intrhand[i].ih_count,
    641 			EVCNT_TYPE_INTR, NULL, "rmixl_fmn", fmnp->fmn_stinfo[i].si_name);
    642 
    643 #ifdef NOTYET
    644 	/*
    645 	 * establish dispatcher for FMN interrupt
    646 	 */
    647 	extern kmutex_t rmixl_intr_lock;
    648 	void *ih;
    649 
    650 	mutex_enter(&rmixl_intr_lock);
    651 	ih = rmixl_vec_establish(RMIXL_INTRVEC_FMN, -1, RMIXL_FMN_INTR_IPL,
    652 		rmixl_fmn_intr_dispatch, fmnp, "fmn");
    653 	if (ih == NULL)
    654 		panic("%s: rmixl_vec_establish failed", __func__);
    655 	mutex_exit(&rmixl_intr_lock);
    656 	fmnp->fmn_ih = ih;
    657 #endif
    658 
    659 	mutex_exit(fmnp->fmn_lock);
    660 }
    661 
    662 void *
    663 rmixl_fmn_intr_establish(int txstid, int (*func)(void *, rmixl_fmn_rxmsg_t *), void *arg)
    664 {
    665 	fmn_t *fmnp;
    666 	fmn_intrhand_t *ih;
    667 
    668 	fmnp = fmn_lookup(cpu_number());
    669 
    670 	mutex_enter(fmnp->fmn_lock);
    671 
    672 	ih = &fmnp->fmn_intrhand[txstid];
    673 
    674 	if (ih->ih_func != NULL) {
    675 #ifdef DEBUG
    676 		panic("%s: intrhand[%d] busy", __func__, txstid);
    677 #endif
    678 		ih = NULL;
    679 	}  else {
    680 		ih->ih_func = func;
    681 		ih->ih_arg = arg;
    682 	}
    683 
    684 	mutex_exit(fmnp->fmn_lock);
    685 
    686 	return ih;
    687 }
    688 
    689 void
    690 rmixl_fmn_intr_disestablish(void *cookie)
    691 {
    692 	fmn_t *fmnp;
    693 	fmn_intrhand_t *ih = cookie;
    694 
    695 	fmnp = fmn_lookup(cpu_number());
    696 	mutex_enter(fmnp->fmn_lock);
    697 
    698 	if (ih->ih_func != NULL) {
    699 		ih->ih_func = NULL;
    700 		ih->ih_arg = NULL;
    701 	}
    702 #ifdef DEBUG
    703 	else {
    704 		panic("%s: intrhand[%ld] not in use",
    705 			__func__, ih - &fmnp->fmn_intrhand[0]);
    706 	}
    707 #endif
    708 
    709 	mutex_exit(fmnp->fmn_lock);
    710 }
    711 
    712 void
    713 rmixl_fmn_intr_poll(u_int bucket, rmixl_fmn_rxmsg_t *rxmsg)
    714 {
    715 	uint32_t bit = 1 << bucket;
    716 	uint32_t cp0_status;
    717 
    718 	KASSERT(bucket < 8);
    719 
    720 	cp0_status = rmixl_cp2_enable();
    721 
    722 	for(;;) {
    723 		rmixl_fmn_msgwait(bit);
    724 		if (rmixl_fmn_msg_recv(bucket, rxmsg) == 0)
    725 			break;
    726 		DELAY(10);		/* XXX */
    727 	}
    728 
    729 	rmixl_cp2_restore(cp0_status);
    730 }
    731 
    732 #ifdef NOTYET
    733 static int
    734 rmixl_fmn_intr_dispatch(void *arg)
    735 {
    736 	fmn_t *fmnp = arg;
    737 	uint32_t msg_status;
    738 	uint32_t cp0_status;
    739 	uint32_t rfbne;
    740 	int txstid;
    741 	int rv = 0;
    742 
    743 	mutex_enter(fmnp->fmn_lock);
    744 	cp0_status = rmixl_cp2_enable();
    745 
    746 	RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 0, msg_status);
    747 	rfbne = (~msg_status) >> RMIXL_MSG_STS0_RFBE_SHIFT;
    748 
    749 	if (rfbne != 0) {
    750 		DPRINTF(("%s: rfbne %#x\n", __func__, rfbne));
    751 		for (u_int bucket=0; bucket < 8; bucket++) {
    752 			rmixl_fmn_rxmsg_t rxmsg;
    753 			fmn_intrhand_t *ih;
    754 
    755 			if ((rfbne & (1 << bucket)) == 0)
    756 				continue;
    757 			if (rmixl_fmn_msg_recv_subr(bucket, &rxmsg) != 0)
    758 				continue;
    759 			rv = 1;
    760 			txstid = fmnp->fmn_stidtab[rxmsg.rxsid];
    761 			ih = &fmnp->fmn_intrhand[txstid];
    762 			if (ih->ih_func != NULL)
    763 				if ((ih->ih_func)(ih->ih_arg, &rxmsg) != 0)
    764 					ih->ih_count.ev_count++;
    765 		}
    766 
    767 	}
    768 	rmixl_cp2_restore(cp0_status);
    769 	mutex_exit(fmnp->fmn_lock);
    770 
    771 	return rv;
    772 }
    773 #endif	/* NOTYET */
    774 
    775 int
    776 rmixl_fmn_msg_send(u_int size, u_int code, u_int dest_id, rmixl_fmn_msg_t *msg)
    777 {
    778 	fmn_t *fmnp;
    779         uint32_t cp0_status;
    780         uint32_t msg_status;
    781         uint32_t msg_status1;
    782 	uint32_t desc;
    783 	int rv = 0;
    784 
    785 	KASSERT((size >= 1) && size <= 4);
    786 	KASSERT(code <= 0xff);
    787 	KASSERT(dest_id <= 0xff);
    788 
    789 	fmnp = fmn_lookup(cpu_number());
    790 	mutex_enter(fmnp->fmn_lock);
    791         cp0_status = rmixl_cp2_enable();
    792 
    793 	switch(size) {
    794 	case 1:
    795 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 0, msg->data[0]);
    796 		break;
    797 	case 2:
    798 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 0, msg->data[0]);
    799 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 1, msg->data[1]);
    800 		break;
    801 	case 3:
    802 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 0, msg->data[0]);
    803 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 1, msg->data[1]);
    804 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 2, msg->data[2]);
    805 		break;
    806 	case 4:
    807 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 0, msg->data[0]);
    808 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 1, msg->data[1]);
    809 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 2, msg->data[2]);
    810 		RMIXL_DMTC2(RMIXL_COP_2_TXBUF, 3, msg->data[3]);
    811 		break;
    812 	default:
    813 		DIAG_PRF(("%s: bad size %d", __func__, size));
    814 		rv = -1;
    815 		goto out;
    816 	}
    817 
    818 	for (int try=16; try--; ) {
    819 		RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 0, msg_status);
    820 		if ((msg_status & (RMIXL_MSG_STS0_LPF|RMIXL_MSG_STS0_SPF|RMIXL_MSG_STS0_SMP)) == 0)
    821 			goto send;
    822 		DELAY(10);		/* XXX ??? */
    823 	}
    824 	DIAG_PRF(("%s: cpu=%ld, msg %p, dst_id=%d, sts=%#x: can't send\n",
    825 		__func__, cpu_number(), msg, dest_id, msg_status));
    826 	rv = -1;
    827 	goto out;
    828  send:
    829 	desc = RMIXL_MSGSND_DESC(size, code, dest_id);
    830 	DPRINTF(("%s: cpu %ld, desc %#x\n", __func__, cpu_number(), desc));
    831 	for (int try=16; try--; ) {
    832 		rmixl_msgsnd(desc);
    833 		RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 0, msg_status);
    834 		RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 1, msg_status1);
    835 		if (((msg_status  & RMIXL_MSG_STS0_SCF) == 0)
    836 		&&  ((msg_status1 & RMIXL_MSG_STS1_ERRS) == 0))
    837 			goto out;
    838 #if 0
    839 #ifdef DEBUG
    840 		if ((msg_status & RMIXL_MSG_STS0_SCF) != 0) {
    841 			uint32_t r;
    842 			u_int regno = RMIXL_COP_2_CREDITS+fmnp->fmn_core;
    843 			u_int sel = fmnp->fmn_thread;
    844 			printf("%s: CC[%d,%d]=", __func__, regno, sel);
    845 			FMN_CP2_RD_SWITCH_RW(READ, regno, sel, r);
    846 			printf("%s: CC[%d,%d]=%d\n", __func__, regno, sel, r);
    847 		}
    848 #endif	/* DEBUG */
    849 #endif	/* 0 */
    850 		/* clear status1 error(s) */
    851 		if ((msg_status1 & RMIXL_MSG_STS1_ERRS) != 0) {
    852 			RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 1, msg_status1);
    853 			RMIXL_MTC2(RMIXL_COP_2_MSG_STS, 1, msg_status1);
    854 		}
    855 		DIAG_PRF(("%s: src=%ld, dst=%d, sts=%#x, %#x: send error, try %d\n",
    856 			__func__, cpu_number(), dest_id, msg_status, msg_status1, try));
    857 		DELAY(10);
    858 	}
    859 	rv = -1;
    860  out:
    861 	rmixl_cp2_restore(cp0_status);
    862 	mutex_exit(fmnp->fmn_lock);
    863 
    864 	return rv;
    865 }
    866 
    867 /*
    868  * rmixl_fmn_msg_recv
    869  *
    870  *	- grab fmn_lock and call rmixl_fmn_msg_recv_subr to do the real work
    871  *	- assume cp2 access is already enabled
    872  */
    873 int
    874 rmixl_fmn_msg_recv(u_int bucket, rmixl_fmn_rxmsg_t *rxmsg)
    875 {
    876 	fmn_t *fmnp;
    877 	int rv;
    878 
    879 	fmnp = fmn_lookup(cpu_number());
    880 	mutex_enter(fmnp->fmn_lock);
    881 	rv = rmixl_fmn_msg_recv_subr(bucket, rxmsg);
    882 	mutex_exit(fmnp->fmn_lock);
    883 
    884 	return rv;
    885 }
    886 
    887 /*
    888  * rmixl_fmn_msg_recv_subr
    889  *
    890  *	- assume fmn_lock is owned
    891  *	- assume cp2 access is already enabled
    892  */
    893 static int
    894 rmixl_fmn_msg_recv_subr(u_int bucket, rmixl_fmn_rxmsg_t *rxmsg)
    895 {
    896 	fmn_t *fmnp;
    897 	uint32_t msg_status;
    898 	int rv;
    899 
    900 	fmnp = fmn_lookup(cpu_number());
    901 	KASSERT(mutex_owned(fmnp->fmn_lock) != 0);
    902 
    903 	for (int try=16; try--; ) {
    904 		RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 0, msg_status);
    905 		if ((msg_status & (RMIXL_MSG_STS0_LPF)) == 0)
    906 			goto recv;
    907 	}
    908 	DIAG_PRF(("%s: cpu=%ld, bucket=%d, sts=%#x: Load Pending Fail\n",
    909 		__func__, cpu_number(), bucket, msg_status));
    910 	rv = -1;
    911 	goto out;
    912  recv:
    913 	rmixl_msgld(bucket);
    914 	RMIXL_MFC2(RMIXL_COP_2_MSG_STS, 0, msg_status);
    915 	DPRINTF(("%s: cpu=%ld, bucket=%d, sts=%#x\n",
    916 		__func__, cpu_number(), bucket, msg_status));
    917 	rv = msg_status & (RMIXL_MSG_STS0_LEF|RMIXL_MSG_STS0_LPF);
    918 	if (rv == 0) {
    919 		rxmsg->rxsid = (msg_status & RMIXL_MSG_STS0_RMSID)
    920 				>> RMIXL_MSG_STS0_RMSID_SHIFT;
    921 		rxmsg->code = (msg_status & RMIXL_MSG_STS0_RMSC)
    922 				>> RMIXL_MSG_STS0_RMSC_SHIFT;
    923 		rxmsg->size = ((msg_status & RMIXL_MSG_STS0_RMS)
    924 				>> RMIXL_MSG_STS0_RMS_SHIFT) + 1;
    925 		switch(rxmsg->size) {
    926 		case 1:
    927 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 0, rxmsg->msg.data[0]);
    928 			break;
    929 		case 2:
    930 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 0, rxmsg->msg.data[0]);
    931 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 1, rxmsg->msg.data[1]);
    932 			break;
    933 		case 3:
    934 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 0, rxmsg->msg.data[0]);
    935 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 1, rxmsg->msg.data[1]);
    936 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 2, rxmsg->msg.data[2]);
    937 			break;
    938 		case 4:
    939 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 0, rxmsg->msg.data[0]);
    940 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 1, rxmsg->msg.data[1]);
    941 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 2, rxmsg->msg.data[2]);
    942 			RMIXL_DMFC2(RMIXL_COP_2_RXBUF, 3, rxmsg->msg.data[3]);
    943 			break;
    944 		default:
    945 			/* "impossible" due to bitfield width */
    946 			panic("%s: bad size %d", __func__, rxmsg->size);
    947 		}
    948 	}
    949  out:
    950 
    951 	return rv;
    952 }
    953 
    954 #ifdef FMN_DEBUG
    955 void
    956 rmixl_fmn_cp2_dump(void)
    957 {
    958 	uint32_t cp0_status;
    959 
    960 	cp0_status = rmixl_cp2_enable();
    961 
    962 	CPU2_PRINT_8(RMIXL_COP_2_TXBUF, 0);
    963 	CPU2_PRINT_8(RMIXL_COP_2_TXBUF, 1);
    964 	CPU2_PRINT_8(RMIXL_COP_2_TXBUF, 2);
    965 	CPU2_PRINT_8(RMIXL_COP_2_TXBUF, 3);
    966 
    967 	CPU2_PRINT_8(RMIXL_COP_2_RXBUF, 0);
    968 	CPU2_PRINT_8(RMIXL_COP_2_RXBUF, 1);
    969 	CPU2_PRINT_8(RMIXL_COP_2_RXBUF, 2);
    970 	CPU2_PRINT_8(RMIXL_COP_2_RXBUF, 3);
    971 
    972 	CPU2_PRINT_4(RMIXL_COP_2_MSG_STS, 0);
    973 	CPU2_PRINT_4(RMIXL_COP_2_MSG_STS, 1);
    974 
    975 	CPU2_PRINT_4(RMIXL_COP_2_MSG_CFG, 0);
    976 	CPU2_PRINT_4(RMIXL_COP_2_MSG_CFG, 1);
    977 
    978 	CPU2_PRINT_4(RMIXL_COP_2_MSG_BSZ, 0);
    979 	CPU2_PRINT_4(RMIXL_COP_2_MSG_BSZ, 1);
    980 	CPU2_PRINT_4(RMIXL_COP_2_MSG_BSZ, 2);
    981 	CPU2_PRINT_4(RMIXL_COP_2_MSG_BSZ, 3);
    982 	CPU2_PRINT_4(RMIXL_COP_2_MSG_BSZ, 4);
    983 	CPU2_PRINT_4(RMIXL_COP_2_MSG_BSZ, 5);
    984 	CPU2_PRINT_4(RMIXL_COP_2_MSG_BSZ, 6);
    985 	CPU2_PRINT_4(RMIXL_COP_2_MSG_BSZ, 7);
    986 
    987 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 0, 0);
    988 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 0, 1);
    989 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 0, 2);
    990 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 0, 3);
    991 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 0, 4);
    992 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 0, 5);
    993 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 0, 6);
    994 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 0, 7);
    995 
    996 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 1, 0);
    997 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 1, 1);
    998 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 1, 2);
    999 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 1, 3);
   1000 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 1, 4);
   1001 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 1, 5);
   1002 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 1, 6);
   1003 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 1, 7);
   1004 
   1005 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 2, 0);
   1006 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 2, 1);
   1007 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 2, 2);
   1008 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 2, 3);
   1009 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 2, 4);
   1010 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 2, 5);
   1011 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 2, 6);
   1012 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 2, 7);
   1013 
   1014 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 3, 0);
   1015 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 3, 1);
   1016 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 3, 2);
   1017 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 3, 3);
   1018 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 3, 4);
   1019 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 3, 5);
   1020 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 3, 6);
   1021 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 3, 7);
   1022 
   1023 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 4, 0);
   1024 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 4, 1);
   1025 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 4, 2);
   1026 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 4, 3);
   1027 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 4, 4);
   1028 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 4, 5);
   1029 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 4, 6);
   1030 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 4, 7);
   1031 
   1032 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 5, 0);
   1033 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 5, 1);
   1034 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 5, 2);
   1035 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 5, 3);
   1036 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 5, 4);
   1037 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 5, 5);
   1038 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 5, 6);
   1039 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 5, 7);
   1040 
   1041 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 6, 0);
   1042 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 6, 1);
   1043 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 6, 2);
   1044 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 6, 3);
   1045 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 6, 4);
   1046 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 6, 5);
   1047 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 6, 6);
   1048 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 6, 7);
   1049 
   1050 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 7, 0);
   1051 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 7, 1);
   1052 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 7, 2);
   1053 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 7, 3);
   1054 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 7, 4);
   1055 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 7, 5);
   1056 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 7, 6);
   1057 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 7, 7);
   1058 
   1059 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 8, 0);
   1060 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 8, 1);
   1061 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 8, 2);
   1062 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 8, 3);
   1063 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 8, 4);
   1064 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 8, 5);
   1065 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 8, 6);
   1066 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 8, 7);
   1067 
   1068 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 9, 0);
   1069 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 9, 1);
   1070 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 9, 2);
   1071 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 9, 3);
   1072 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 9, 4);
   1073 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 9, 5);
   1074 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 9, 6);
   1075 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 9, 7);
   1076 
   1077 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 10, 0);
   1078 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 10, 1);
   1079 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 10, 2);
   1080 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 10, 3);
   1081 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 10, 4);
   1082 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 10, 5);
   1083 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 10, 6);
   1084 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 10, 7);
   1085 
   1086 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 11, 0);
   1087 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 11, 1);
   1088 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 11, 2);
   1089 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 11, 3);
   1090 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 11, 4);
   1091 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 11, 5);
   1092 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 11, 6);
   1093 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 11, 7);
   1094 
   1095 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 12, 0);
   1096 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 12, 1);
   1097 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 12, 2);
   1098 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 12, 3);
   1099 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 12, 4);
   1100 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 12, 5);
   1101 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 12, 6);
   1102 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 12, 7);
   1103 
   1104 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 13, 0);
   1105 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 13, 1);
   1106 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 13, 2);
   1107 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 13, 3);
   1108 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 13, 4);
   1109 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 13, 5);
   1110 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 13, 6);
   1111 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 13, 7);
   1112 
   1113 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 14, 0);
   1114 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 14, 1);
   1115 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 14, 2);
   1116 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 14, 3);
   1117 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 14, 4);
   1118 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 14, 5);
   1119 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 14, 6);
   1120 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 14, 7);
   1121 
   1122 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 15, 0);
   1123 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 15, 1);
   1124 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 15, 2);
   1125 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 15, 3);
   1126 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 15, 4);
   1127 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 15, 5);
   1128 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 15, 6);
   1129 	CPU2_PRINT_4(RMIXL_COP_2_CREDITS + 15, 7);
   1130 
   1131 	rmixl_cp2_restore(cp0_status);
   1132 }
   1133 
   1134 
   1135 void
   1136 rmixl_fmn_cc_dump(void)
   1137 {
   1138 	uint32_t cc[4][8];
   1139 
   1140 	FMN_CP2_4SEL_READ(RMIXL_COP_2_CREDITS,   0, &cc[0][0]);
   1141 	FMN_CP2_4SEL_READ(RMIXL_COP_2_CREDITS,   4, &cc[0][4]);
   1142 	FMN_CP2_4SEL_READ(RMIXL_COP_2_CREDITS+1, 0, &cc[1][0]);
   1143 	FMN_CP2_4SEL_READ(RMIXL_COP_2_CREDITS+1, 4, &cc[1][4]);
   1144 	FMN_CP2_4SEL_READ(RMIXL_COP_2_CREDITS+2, 0, &cc[2][0]);
   1145 	FMN_CP2_4SEL_READ(RMIXL_COP_2_CREDITS+2, 4, &cc[2][4]);
   1146 	FMN_CP2_4SEL_READ(RMIXL_COP_2_CREDITS+3, 0, &cc[3][0]);
   1147 	FMN_CP2_4SEL_READ(RMIXL_COP_2_CREDITS+3, 4, &cc[3][4]);
   1148 
   1149 	printf("%s: cpu %ld\n", __func__, cpu_number());
   1150 	for (int i=0; i < 4; i++) {
   1151 		for (int j=0; j < 8; j++)
   1152 			printf(" %#x,", cc[i][j]);
   1153 		printf("\n");
   1154 	}
   1155 }
   1156 
   1157 #endif	/* FMN_DEBUG */
   1158