arch/mips/include/asm/netlogic/xlp-hal/pic.h

   1 /*
   2  * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
   3  * reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the NetLogic
   9  * license below:
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  *
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in
  19  *    the documentation and/or other materials provided with the
  20  *    distribution.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  29  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  30  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  31  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  32  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef _NLM_HAL_PIC_H
  36 #define _NLM_HAL_PIC_H
  37
  38 /* PIC Specific registers */
  39 #define PIC_CTRL                0x00
  40
  41 /* PIC control register defines */
  42 #define PIC_CTRL_ITV            32 /* interrupt timeout value */
  43 #define PIC_CTRL_ICI            19 /* ICI interrupt timeout enable */
  44 #define PIC_CTRL_ITE            18 /* interrupt timeout enable */
  45 #define PIC_CTRL_STE            10 /* system timer interrupt enable */
  46 #define PIC_CTRL_WWR1           8  /* watchdog 1 wraparound count for reset */
  47 #define PIC_CTRL_WWR0           6  /* watchdog 0 wraparound count for reset */
  48 #define PIC_CTRL_WWN1           4  /* watchdog 1 wraparound count for NMI */
  49 #define PIC_CTRL_WWN0           2  /* watchdog 0 wraparound count for NMI */
  50 #define PIC_CTRL_WTE            0  /* watchdog timer enable */
  51
  52 /* PIC Status register defines */
  53 #define PIC_ICI_STATUS          33 /* ICI interrupt timeout status */
  54 #define PIC_ITE_STATUS          32 /* interrupt timeout status */
  55 #define PIC_STS_STATUS          4  /* System timer interrupt status */
  56 #define PIC_WNS_STATUS          2  /* NMI status for watchdog timers */
  57 #define PIC_WIS_STATUS          0  /* Interrupt status for watchdog timers */
  58
  59 /* PIC IPI control register offsets */
  60 #define PIC_IPICTRL_NMI         32
  61 #define PIC_IPICTRL_RIV         20 /* received interrupt vector */
  62 #define PIC_IPICTRL_IDB         16 /* interrupt destination base */
  63 #define PIC_IPICTRL_DTE          0 /* interrupt destination thread enables */
  64
  65 /* PIC IRT register offsets */
  66 #define PIC_IRT_ENABLE          31
  67 #define PIC_IRT_NMI             29
  68 #define PIC_IRT_SCH             28 /* Scheduling scheme */
  69 #define PIC_IRT_RVEC            20 /* Interrupt receive vectors */
  70 #define PIC_IRT_DT              19 /* Destination type */
  71 #define PIC_IRT_DB              16 /* Destination base */
  72 #define PIC_IRT_DTE             0  /* Destination thread enables */
  73
  74 #define PIC_BYTESWAP            0x02
  75 #define PIC_STATUS              0x04
  76 #define PIC_INTR_TIMEOUT        0x06
  77 #define PIC_ICI0_INTR_TIMEOUT   0x08
  78 #define PIC_ICI1_INTR_TIMEOUT   0x0a
  79 #define PIC_ICI2_INTR_TIMEOUT   0x0c
  80 #define PIC_IPI_CTL             0x0e
  81 #define PIC_INT_ACK             0x10
  82 #define PIC_INT_PENDING0        0x12
  83 #define PIC_INT_PENDING1        0x14
  84 #define PIC_INT_PENDING2        0x16
  85
  86 #define PIC_WDOG0_MAXVAL        0x18
  87 #define PIC_WDOG0_COUNT         0x1a
  88 #define PIC_WDOG0_ENABLE0       0x1c
  89 #define PIC_WDOG0_ENABLE1       0x1e
  90 #define PIC_WDOG0_BEATCMD       0x20
  91 #define PIC_WDOG0_BEAT0         0x22
  92 #define PIC_WDOG0_BEAT1         0x24
  93
  94 #define PIC_WDOG1_MAXVAL        0x26
  95 #define PIC_WDOG1_COUNT         0x28
  96 #define PIC_WDOG1_ENABLE0       0x2a
  97 #define PIC_WDOG1_ENABLE1       0x2c
  98 #define PIC_WDOG1_BEATCMD       0x2e
  99 #define PIC_WDOG1_BEAT0         0x30
 100 #define PIC_WDOG1_BEAT1         0x32
 101
 102 #define PIC_WDOG_MAXVAL(i)      (PIC_WDOG0_MAXVAL + ((i) ? 7 : 0))
 103 #define PIC_WDOG_COUNT(i)       (PIC_WDOG0_COUNT + ((i) ? 7 : 0))
 104 #define PIC_WDOG_ENABLE0(i)     (PIC_WDOG0_ENABLE0 + ((i) ? 7 : 0))
 105 #define PIC_WDOG_ENABLE1(i)     (PIC_WDOG0_ENABLE1 + ((i) ? 7 : 0))
 106 #define PIC_WDOG_BEATCMD(i)     (PIC_WDOG0_BEATCMD + ((i) ? 7 : 0))
 107 #define PIC_WDOG_BEAT0(i)       (PIC_WDOG0_BEAT0 + ((i) ? 7 : 0))
 108 #define PIC_WDOG_BEAT1(i)       (PIC_WDOG0_BEAT1 + ((i) ? 7 : 0))
 109
 110 #define PIC_TIMER0_MAXVAL    0x34
 111 #define PIC_TIMER1_MAXVAL    0x36
 112 #define PIC_TIMER2_MAXVAL    0x38
 113 #define PIC_TIMER3_MAXVAL    0x3a
 114 #define PIC_TIMER4_MAXVAL    0x3c
 115 #define PIC_TIMER5_MAXVAL    0x3e
 116 #define PIC_TIMER6_MAXVAL    0x40
 117 #define PIC_TIMER7_MAXVAL    0x42
 118 #define PIC_TIMER_MAXVAL(i)  (PIC_TIMER0_MAXVAL + ((i) * 2))
 119
 120 #define PIC_TIMER0_COUNT     0x44
 121 #define PIC_TIMER1_COUNT     0x46
 122 #define PIC_TIMER2_COUNT     0x48
 123 #define PIC_TIMER3_COUNT     0x4a
 124 #define PIC_TIMER4_COUNT     0x4c
 125 #define PIC_TIMER5_COUNT     0x4e
 126 #define PIC_TIMER6_COUNT     0x50
 127 #define PIC_TIMER7_COUNT     0x52
 128 #define PIC_TIMER_COUNT(i)   (PIC_TIMER0_COUNT + ((i) * 2))
 129
 130 #define PIC_ITE0_N0_N1          0x54
 131 #define PIC_ITE1_N0_N1          0x58
 132 #define PIC_ITE2_N0_N1          0x5c
 133 #define PIC_ITE3_N0_N1          0x60
 134 #define PIC_ITE4_N0_N1          0x64
 135 #define PIC_ITE5_N0_N1          0x68
 136 #define PIC_ITE6_N0_N1          0x6c
 137 #define PIC_ITE7_N0_N1          0x70
 138 #define PIC_ITE_N0_N1(i)        (PIC_ITE0_N0_N1 + ((i) * 4))
 139
 140 #define PIC_ITE0_N2_N3          0x56
 141 #define PIC_ITE1_N2_N3          0x5a
 142 #define PIC_ITE2_N2_N3          0x5e
 143 #define PIC_ITE3_N2_N3          0x62
 144 #define PIC_ITE4_N2_N3          0x66
 145 #define PIC_ITE5_N2_N3          0x6a
 146 #define PIC_ITE6_N2_N3          0x6e
 147 #define PIC_ITE7_N2_N3          0x72
 148 #define PIC_ITE_N2_N3(i)        (PIC_ITE0_N2_N3 + ((i) * 4))
 149
 150 #define PIC_IRT0                0x74
 151 #define PIC_IRT(i)              (PIC_IRT0 + ((i) * 2))
 152
 153 #define TIMER_CYCLES_MAXVAL     0xffffffffffffffffULL
 154
 155 /*
 156  *    IRT Map
 157  */
 158 #define PIC_NUM_IRTS            160
 159
 160 #define PIC_IRT_WD_0_INDEX      0
 161 #define PIC_IRT_WD_1_INDEX      1
 162 #define PIC_IRT_WD_NMI_0_INDEX  2
 163 #define PIC_IRT_WD_NMI_1_INDEX  3
 164 #define PIC_IRT_TIMER_0_INDEX   4
 165 #define PIC_IRT_TIMER_1_INDEX   5
 166 #define PIC_IRT_TIMER_2_INDEX   6
 167 #define PIC_IRT_TIMER_3_INDEX   7
 168 #define PIC_IRT_TIMER_4_INDEX   8
 169 #define PIC_IRT_TIMER_5_INDEX   9
 170 #define PIC_IRT_TIMER_6_INDEX   10
 171 #define PIC_IRT_TIMER_7_INDEX   11
 172 #define PIC_IRT_CLOCK_INDEX     PIC_IRT_TIMER_7_INDEX
 173 #define PIC_IRT_TIMER_INDEX(num)        ((num) + PIC_IRT_TIMER_0_INDEX)
 174
 175
 176 /* 11 and 12 */
 177 #define PIC_NUM_MSG_Q_IRTS      32
 178 #define PIC_IRT_MSG_Q0_INDEX    12
 179 #define PIC_IRT_MSG_Q_INDEX(qid)        ((qid) + PIC_IRT_MSG_Q0_INDEX)
 180 /* 12 to 43 */
 181 #define PIC_IRT_MSG_0_INDEX     44
 182 #define PIC_IRT_MSG_1_INDEX     45
 183 /* 44 and 45 */
 184 #define PIC_NUM_PCIE_MSIX_IRTS  32
 185 #define PIC_IRT_PCIE_MSIX_0_INDEX       46
 186 #define PIC_IRT_PCIE_MSIX_INDEX(num)    ((num) + PIC_IRT_PCIE_MSIX_0_INDEX)
 187 /* 46 to 77 */
 188 #define PIC_NUM_PCIE_LINK_IRTS          4
 189 #define PIC_IRT_PCIE_LINK_0_INDEX       78
 190 #define PIC_IRT_PCIE_LINK_1_INDEX       79
 191 #define PIC_IRT_PCIE_LINK_2_INDEX       80
 192 #define PIC_IRT_PCIE_LINK_3_INDEX       81
 193 #define PIC_IRT_PCIE_LINK_INDEX(num)    ((num) + PIC_IRT_PCIE_LINK_0_INDEX)
 194
 195 #define PIC_CLOCK_TIMER                 7
 196
 197 #if !defined(LOCORE) && !defined(__ASSEMBLY__)
 198
 199 /*
 200  *   Misc
 201  */
 202 #define PIC_IRT_VALID                   1
 203 #define PIC_LOCAL_SCHEDULING            1
 204 #define PIC_GLOBAL_SCHEDULING           0
 205
 206 #define nlm_read_pic_reg(b, r)  nlm_read_reg64(b, r)
 207 #define nlm_write_pic_reg(b, r, v) nlm_write_reg64(b, r, v)
 208 #define nlm_get_pic_pcibase(node) nlm_pcicfg_base(XLP_IO_PIC_OFFSET(node))
 209 #define nlm_get_pic_regbase(node) (nlm_get_pic_pcibase(node) + XLP_IO_PCI_HDRSZ)
 210
 211 /* We use PIC on node 0 as a timer */
 212 #define pic_timer_freq()                nlm_get_pic_frequency(0)
 213
 214 /* IRT and h/w interrupt routines */
 215 static inline int
 216 nlm_pic_read_irt(uint64_t base, int irt_index)
 217 {
 218         return nlm_read_pic_reg(base, PIC_IRT(irt_index));
 219 }
 220
 221 static inline void
 222 nlm_set_irt_to_cpu(uint64_t base, int irt, int cpu)
 223 {
 224         uint64_t val;
 225
 226         val = nlm_read_pic_reg(base, PIC_IRT(irt));
 227         /* clear cpuset and mask */
 228         val &= ~((0x7ull << 16) | 0xffff);
 229         /* set DB, cpuset and cpumask */
 230         val |= (1 << 19) | ((cpu >> 4) << 16) | (1 << (cpu & 0xf));
 231         nlm_write_pic_reg(base, PIC_IRT(irt), val);
 232 }
 233
 234 static inline void
 235 nlm_pic_write_irt(uint64_t base, int irt_num, int en, int nmi,
 236         int sch, int vec, int dt, int db, int dte)
 237 {
 238         uint64_t val;
 239
 240         val = (((uint64_t)en & 0x1) << 31) | ((nmi & 0x1) << 29) |
 241                         ((sch & 0x1) << 28) | ((vec & 0x3f) << 20) |
 242                         ((dt & 0x1) << 19) | ((db & 0x7) << 16) |
 243                         (dte & 0xffff);
 244
 245         nlm_write_pic_reg(base, PIC_IRT(irt_num), val);
 246 }
 247
 248 static inline void
 249 nlm_pic_write_irt_direct(uint64_t base, int irt_num, int en, int nmi,
 250         int sch, int vec, int cpu)
 251 {
 252         nlm_pic_write_irt(base, irt_num, en, nmi, sch, vec, 1,
 253                 (cpu >> 4),             /* thread group */
 254                 1 << (cpu & 0xf));      /* thread mask */
 255 }
 256
 257 static inline uint64_t
 258 nlm_pic_read_timer(uint64_t base, int timer)
 259 {
 260         return nlm_read_pic_reg(base, PIC_TIMER_COUNT(timer));
 261 }
 262
 263 static inline uint32_t
 264 nlm_pic_read_timer32(uint64_t base, int timer)
 265 {
 266         return (uint32_t)nlm_read_pic_reg(base, PIC_TIMER_COUNT(timer));
 267 }
 268
 269 static inline void
 270 nlm_pic_write_timer(uint64_t base, int timer, uint64_t value)
 271 {
 272         nlm_write_pic_reg(base, PIC_TIMER_COUNT(timer), value);
 273 }
 274
 275 static inline void
 276 nlm_pic_set_timer(uint64_t base, int timer, uint64_t value, int irq, int cpu)
 277 {
 278         uint64_t pic_ctrl = nlm_read_pic_reg(base, PIC_CTRL);
 279         int en;
 280
 281         en = (irq > 0);
 282         nlm_write_pic_reg(base, PIC_TIMER_MAXVAL(timer), value);
 283         nlm_pic_write_irt_direct(base, PIC_IRT_TIMER_INDEX(timer),
 284                 en, 0, 0, irq, cpu);
 285
 286         /* enable the timer */
 287         pic_ctrl |= (1 << (PIC_CTRL_STE + timer));
 288         nlm_write_pic_reg(base, PIC_CTRL, pic_ctrl);
 289 }
 290
 291 static inline void
 292 nlm_pic_enable_irt(uint64_t base, int irt)
 293 {
 294         uint64_t reg;
 295
 296         reg = nlm_read_pic_reg(base, PIC_IRT(irt));
 297         nlm_write_pic_reg(base, PIC_IRT(irt), reg | (1u << 31));
 298 }
 299
 300 static inline void
 301 nlm_pic_disable_irt(uint64_t base, int irt)
 302 {
 303         uint64_t reg;
 304
 305         reg = nlm_read_pic_reg(base, PIC_IRT(irt));
 306         nlm_write_pic_reg(base, PIC_IRT(irt), reg & ~((uint64_t)1 << 31));
 307 }
 308
 309 static inline void
 310 nlm_pic_send_ipi(uint64_t base, int hwt, int irq, int nmi)
 311 {
 312         uint64_t ipi;
 313
 314         ipi = ((uint64_t)nmi << 31) | (irq << 20);
 315         ipi |= ((hwt >> 4) << 16) | (1 << (hwt & 0xf)); /* cpuset and mask */
 316         nlm_write_pic_reg(base, PIC_IPI_CTL, ipi);
 317 }
 318
 319 static inline void
 320 nlm_pic_ack(uint64_t base, int irt_num)
 321 {
 322         nlm_write_pic_reg(base, PIC_INT_ACK, irt_num);
 323
 324         /* Ack the Status register for Watchdog & System timers */
 325         if (irt_num < 12)
 326                 nlm_write_pic_reg(base, PIC_STATUS, (1 << irt_num));
 327 }
 328
 329 static inline void
 330 nlm_pic_init_irt(uint64_t base, int irt, int irq, int hwt, int en)
 331 {
 332         nlm_pic_write_irt_direct(base, irt, en, 0, 0, irq, hwt);
 333 }
 334
 335 int nlm_irq_to_irt(int irq);
 336
 337 #endif /* __ASSEMBLY__ */
 338 #endif /* _NLM_HAL_PIC_H */