kernel/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 PIC_9XX_PENDING_0       0x6
 154 #define PIC_9XX_PENDING_1       0x8
 155 #define PIC_9XX_PENDING_2       0xa
 156 #define PIC_9XX_PENDING_3       0xc
 157
 158 #define PIC_9XX_IRT0            0x1c0
 159 #define PIC_9XX_IRT(i)          (PIC_9XX_IRT0 + ((i) * 2))
 160
 161 /*
 162  *    IRT Map
 163  */
 164 #define PIC_NUM_IRTS            160
 165 #define PIC_9XX_NUM_IRTS        256
 166
 167 #define PIC_IRT_WD_0_INDEX      0
 168 #define PIC_IRT_WD_1_INDEX      1
 169 #define PIC_IRT_WD_NMI_0_INDEX  2
 170 #define PIC_IRT_WD_NMI_1_INDEX  3
 171 #define PIC_IRT_TIMER_0_INDEX   4
 172 #define PIC_IRT_TIMER_1_INDEX   5
 173 #define PIC_IRT_TIMER_2_INDEX   6
 174 #define PIC_IRT_TIMER_3_INDEX   7
 175 #define PIC_IRT_TIMER_4_INDEX   8
 176 #define PIC_IRT_TIMER_5_INDEX   9
 177 #define PIC_IRT_TIMER_6_INDEX   10
 178 #define PIC_IRT_TIMER_7_INDEX   11
 179 #define PIC_IRT_CLOCK_INDEX     PIC_IRT_TIMER_7_INDEX
 180 #define PIC_IRT_TIMER_INDEX(num)        ((num) + PIC_IRT_TIMER_0_INDEX)
 181
 182
 183 /* 11 and 12 */
 184 #define PIC_NUM_MSG_Q_IRTS      32
 185 #define PIC_IRT_MSG_Q0_INDEX    12
 186 #define PIC_IRT_MSG_Q_INDEX(qid)        ((qid) + PIC_IRT_MSG_Q0_INDEX)
 187 /* 12 to 43 */
 188 #define PIC_IRT_MSG_0_INDEX     44
 189 #define PIC_IRT_MSG_1_INDEX     45
 190 /* 44 and 45 */
 191 #define PIC_NUM_PCIE_MSIX_IRTS  32
 192 #define PIC_IRT_PCIE_MSIX_0_INDEX       46
 193 #define PIC_IRT_PCIE_MSIX_INDEX(num)    ((num) + PIC_IRT_PCIE_MSIX_0_INDEX)
 194 /* 46 to 77 */
 195 #define PIC_NUM_PCIE_LINK_IRTS          4
 196 #define PIC_IRT_PCIE_LINK_0_INDEX       78
 197 #define PIC_IRT_PCIE_LINK_1_INDEX       79
 198 #define PIC_IRT_PCIE_LINK_2_INDEX       80
 199 #define PIC_IRT_PCIE_LINK_3_INDEX       81
 200 #define PIC_IRT_PCIE_LINK_INDEX(num)    ((num) + PIC_IRT_PCIE_LINK_0_INDEX)
 201
 202 #define PIC_9XX_IRT_PCIE_LINK_0_INDEX   191
 203 #define PIC_9XX_IRT_PCIE_LINK_INDEX(num) \
 204                                 ((num) + PIC_9XX_IRT_PCIE_LINK_0_INDEX)
 205
 206 #define PIC_CLOCK_TIMER                 7
 207
 208 #if !defined(LOCORE) && !defined(__ASSEMBLY__)
 209
 210 /*
 211  *   Misc
 212  */
 213 #define PIC_IRT_VALID                   1
 214 #define PIC_LOCAL_SCHEDULING            1
 215 #define PIC_GLOBAL_SCHEDULING           0
 216
 217 #define nlm_read_pic_reg(b, r)  nlm_read_reg64(b, r)
 218 #define nlm_write_pic_reg(b, r, v) nlm_write_reg64(b, r, v)
 219 #define nlm_get_pic_pcibase(node)       nlm_pcicfg_base(cpu_is_xlp9xx() ? \
 220                 XLP9XX_IO_PIC_OFFSET(node) : XLP_IO_PIC_OFFSET(node))
 221 #define nlm_get_pic_regbase(node) (nlm_get_pic_pcibase(node) + XLP_IO_PCI_HDRSZ)
 222
 223 /* We use PIC on node 0 as a timer */
 224 #define pic_timer_freq()                nlm_get_pic_frequency(0)
 225
 226 /* IRT and h/w interrupt routines */
 227 static inline void
 228 nlm_9xx_pic_write_irt(uint64_t base, int irt_num, int en, int nmi,
 229         int sch, int vec, int dt, int db, int cpu)
 230 {
 231         uint64_t val;
 232
 233         val = (((uint64_t)en & 0x1) << 22) | ((nmi & 0x1) << 23) |
 234                         ((0 /*mc*/) << 20) | ((vec & 0x3f) << 24) |
 235                         ((dt & 0x1) << 21) | (0 /*ptr*/ << 16) |
 236                         (cpu & 0x3ff);
 237
 238         nlm_write_pic_reg(base, PIC_9XX_IRT(irt_num), val);
 239 }
 240
 241 static inline void
 242 nlm_pic_write_irt(uint64_t base, int irt_num, int en, int nmi,
 243         int sch, int vec, int dt, int db, int dte)
 244 {
 245         uint64_t val;
 246
 247         val = (((uint64_t)en & 0x1) << 31) | ((nmi & 0x1) << 29) |
 248                         ((sch & 0x1) << 28) | ((vec & 0x3f) << 20) |
 249                         ((dt & 0x1) << 19) | ((db & 0x7) << 16) |
 250                         (dte & 0xffff);
 251
 252         nlm_write_pic_reg(base, PIC_IRT(irt_num), val);
 253 }
 254
 255 static inline void
 256 nlm_pic_write_irt_direct(uint64_t base, int irt_num, int en, int nmi,
 257         int sch, int vec, int cpu)
 258 {
 259         if (cpu_is_xlp9xx())
 260                 nlm_9xx_pic_write_irt(base, irt_num, en, nmi, sch, vec,
 261                                                         1, 0, cpu);
 262         else
 263                 nlm_pic_write_irt(base, irt_num, en, nmi, sch, vec, 1,
 264                         (cpu >> 4),             /* thread group */
 265                         1 << (cpu & 0xf));      /* thread mask */
 266 }
 267
 268 static inline uint64_t
 269 nlm_pic_read_timer(uint64_t base, int timer)
 270 {
 271         return nlm_read_pic_reg(base, PIC_TIMER_COUNT(timer));
 272 }
 273
 274 static inline uint32_t
 275 nlm_pic_read_timer32(uint64_t base, int timer)
 276 {
 277         return (uint32_t)nlm_read_pic_reg(base, PIC_TIMER_COUNT(timer));
 278 }
 279
 280 static inline void
 281 nlm_pic_write_timer(uint64_t base, int timer, uint64_t value)
 282 {
 283         nlm_write_pic_reg(base, PIC_TIMER_COUNT(timer), value);
 284 }
 285
 286 static inline void
 287 nlm_pic_set_timer(uint64_t base, int timer, uint64_t value, int irq, int cpu)
 288 {
 289         uint64_t pic_ctrl = nlm_read_pic_reg(base, PIC_CTRL);
 290         int en;
 291
 292         en = (irq > 0);
 293         nlm_write_pic_reg(base, PIC_TIMER_MAXVAL(timer), value);
 294         nlm_pic_write_irt_direct(base, PIC_IRT_TIMER_INDEX(timer),
 295                 en, 0, 0, irq, cpu);
 296
 297         /* enable the timer */
 298         pic_ctrl |= (1 << (PIC_CTRL_STE + timer));
 299         nlm_write_pic_reg(base, PIC_CTRL, pic_ctrl);
 300 }
 301
 302 static inline void
 303 nlm_pic_enable_irt(uint64_t base, int irt)
 304 {
 305         uint64_t reg;
 306
 307         if (cpu_is_xlp9xx()) {
 308                 reg = nlm_read_pic_reg(base, PIC_9XX_IRT(irt));
 309                 nlm_write_pic_reg(base, PIC_9XX_IRT(irt), reg | (1 << 22));
 310         } else {
 311                 reg = nlm_read_pic_reg(base, PIC_IRT(irt));
 312                 nlm_write_pic_reg(base, PIC_IRT(irt), reg | (1u << 31));
 313         }
 314 }
 315
 316 static inline void
 317 nlm_pic_disable_irt(uint64_t base, int irt)
 318 {
 319         uint64_t reg;
 320
 321         if (cpu_is_xlp9xx()) {
 322                 reg = nlm_read_pic_reg(base, PIC_9XX_IRT(irt));
 323                 reg &= ~((uint64_t)1 << 22);
 324                 nlm_write_pic_reg(base, PIC_9XX_IRT(irt), reg);
 325         } else {
 326                 reg = nlm_read_pic_reg(base, PIC_IRT(irt));
 327                 reg &= ~((uint64_t)1 << 31);
 328                 nlm_write_pic_reg(base, PIC_IRT(irt), reg);
 329         }
 330 }
 331
 332 static inline void
 333 nlm_pic_send_ipi(uint64_t base, int hwt, int irq, int nmi)
 334 {
 335         uint64_t ipi;
 336
 337         if (cpu_is_xlp9xx())
 338                 ipi = (nmi << 23) | (irq << 24) |
 339                         (0/*mcm*/ << 20) | (0/*ptr*/ << 16) | hwt;
 340         else
 341                 ipi = ((uint64_t)nmi << 31) | (irq << 20) |
 342                         ((hwt >> 4) << 16) | (1 << (hwt & 0xf));
 343
 344         nlm_write_pic_reg(base, PIC_IPI_CTL, ipi);
 345 }
 346
 347 static inline void
 348 nlm_pic_ack(uint64_t base, int irt_num)
 349 {
 350         nlm_write_pic_reg(base, PIC_INT_ACK, irt_num);
 351
 352         /* Ack the Status register for Watchdog & System timers */
 353         if (irt_num < 12)
 354                 nlm_write_pic_reg(base, PIC_STATUS, (1 << irt_num));
 355 }
 356
 357 static inline void
 358 nlm_pic_init_irt(uint64_t base, int irt, int irq, int hwt, int en)
 359 {
 360         nlm_pic_write_irt_direct(base, irt, en, 0, 0, irq, hwt);
 361 }
 362
 363 int nlm_irq_to_irt(int irq);
 364
 365 #endif /* __ASSEMBLY__ */
 366 #endif /* _NLM_HAL_PIC_H */