root / hw / openpic.c @ fe0d6123
History | View | Annotate | Download (46.1 kB)
| 1 |
/*
|
|---|---|
| 2 |
* OpenPIC emulation
|
| 3 |
*
|
| 4 |
* Copyright (c) 2004 Jocelyn Mayer
|
| 5 |
*
|
| 6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
| 7 |
* of this software and associated documentation files (the "Software"), to deal
|
| 8 |
* in the Software without restriction, including without limitation the rights
|
| 9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
| 10 |
* copies of the Software, and to permit persons to whom the Software is
|
| 11 |
* furnished to do so, subject to the following conditions:
|
| 12 |
*
|
| 13 |
* The above copyright notice and this permission notice shall be included in
|
| 14 |
* all copies or substantial portions of the Software.
|
| 15 |
*
|
| 16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
| 17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
| 18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
| 19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
| 20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
| 21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
| 22 |
* THE SOFTWARE.
|
| 23 |
*/
|
| 24 |
/*
|
| 25 |
*
|
| 26 |
* Based on OpenPic implementations:
|
| 27 |
* - Intel GW80314 I/O companion chip developer's manual
|
| 28 |
* - Motorola MPC8245 & MPC8540 user manuals.
|
| 29 |
* - Motorola MCP750 (aka Raven) programmer manual.
|
| 30 |
* - Motorola Harrier programmer manuel
|
| 31 |
*
|
| 32 |
* Serial interrupts, as implemented in Raven chipset are not supported yet.
|
| 33 |
*
|
| 34 |
*/
|
| 35 |
#include "hw.h" |
| 36 |
#include "ppc_mac.h" |
| 37 |
#include "pci.h" |
| 38 |
#include "openpic.h" |
| 39 |
|
| 40 |
//#define DEBUG_OPENPIC
|
| 41 |
|
| 42 |
#ifdef DEBUG_OPENPIC
|
| 43 |
#define DPRINTF(fmt, ...) do { printf(fmt , ## __VA_ARGS__); } while (0) |
| 44 |
#else
|
| 45 |
#define DPRINTF(fmt, ...) do { } while (0) |
| 46 |
#endif
|
| 47 |
|
| 48 |
#define USE_MPCxxx /* Intel model is broken, for now */ |
| 49 |
|
| 50 |
#if defined (USE_INTEL_GW80314)
|
| 51 |
/* Intel GW80314 I/O Companion chip */
|
| 52 |
|
| 53 |
#define MAX_CPU 4 |
| 54 |
#define MAX_IRQ 32 |
| 55 |
#define MAX_DBL 4 |
| 56 |
#define MAX_MBX 4 |
| 57 |
#define MAX_TMR 4 |
| 58 |
#define VECTOR_BITS 8 |
| 59 |
#define MAX_IPI 0 |
| 60 |
|
| 61 |
#define VID (0x00000000) |
| 62 |
|
| 63 |
#elif defined(USE_MPCxxx)
|
| 64 |
|
| 65 |
#define MAX_CPU 2 |
| 66 |
#define MAX_IRQ 128 |
| 67 |
#define MAX_DBL 0 |
| 68 |
#define MAX_MBX 0 |
| 69 |
#define MAX_TMR 4 |
| 70 |
#define VECTOR_BITS 8 |
| 71 |
#define MAX_IPI 4 |
| 72 |
#define VID 0x03 /* MPIC version ID */ |
| 73 |
#define VENI 0x00000000 /* Vendor ID */ |
| 74 |
|
| 75 |
enum {
|
| 76 |
IRQ_IPVP = 0,
|
| 77 |
IRQ_IDE, |
| 78 |
}; |
| 79 |
|
| 80 |
/* OpenPIC */
|
| 81 |
#define OPENPIC_MAX_CPU 2 |
| 82 |
#define OPENPIC_MAX_IRQ 64 |
| 83 |
#define OPENPIC_EXT_IRQ 48 |
| 84 |
#define OPENPIC_MAX_TMR MAX_TMR
|
| 85 |
#define OPENPIC_MAX_IPI MAX_IPI
|
| 86 |
|
| 87 |
/* Interrupt definitions */
|
| 88 |
#define OPENPIC_IRQ_FE (OPENPIC_EXT_IRQ) /* Internal functional IRQ */ |
| 89 |
#define OPENPIC_IRQ_ERR (OPENPIC_EXT_IRQ + 1) /* Error IRQ */ |
| 90 |
#define OPENPIC_IRQ_TIM0 (OPENPIC_EXT_IRQ + 2) /* First timer IRQ */ |
| 91 |
#if OPENPIC_MAX_IPI > 0 |
| 92 |
#define OPENPIC_IRQ_IPI0 (OPENPIC_IRQ_TIM0 + OPENPIC_MAX_TMR) /* First IPI IRQ */ |
| 93 |
#define OPENPIC_IRQ_DBL0 (OPENPIC_IRQ_IPI0 + (OPENPIC_MAX_CPU * OPENPIC_MAX_IPI)) /* First doorbell IRQ */ |
| 94 |
#else
|
| 95 |
#define OPENPIC_IRQ_DBL0 (OPENPIC_IRQ_TIM0 + OPENPIC_MAX_TMR) /* First doorbell IRQ */ |
| 96 |
#define OPENPIC_IRQ_MBX0 (OPENPIC_IRQ_DBL0 + OPENPIC_MAX_DBL) /* First mailbox IRQ */ |
| 97 |
#endif
|
| 98 |
|
| 99 |
/* MPIC */
|
| 100 |
#define MPIC_MAX_CPU 1 |
| 101 |
#define MPIC_MAX_EXT 12 |
| 102 |
#define MPIC_MAX_INT 64 |
| 103 |
#define MPIC_MAX_MSG 4 |
| 104 |
#define MPIC_MAX_MSI 8 |
| 105 |
#define MPIC_MAX_TMR MAX_TMR
|
| 106 |
#define MPIC_MAX_IPI MAX_IPI
|
| 107 |
#define MPIC_MAX_IRQ (MPIC_MAX_EXT + MPIC_MAX_INT + MPIC_MAX_TMR + MPIC_MAX_MSG + MPIC_MAX_MSI + (MPIC_MAX_IPI * MPIC_MAX_CPU))
|
| 108 |
|
| 109 |
/* Interrupt definitions */
|
| 110 |
#define MPIC_EXT_IRQ 0 |
| 111 |
#define MPIC_INT_IRQ (MPIC_EXT_IRQ + MPIC_MAX_EXT)
|
| 112 |
#define MPIC_TMR_IRQ (MPIC_INT_IRQ + MPIC_MAX_INT)
|
| 113 |
#define MPIC_MSG_IRQ (MPIC_TMR_IRQ + MPIC_MAX_TMR)
|
| 114 |
#define MPIC_MSI_IRQ (MPIC_MSG_IRQ + MPIC_MAX_MSG)
|
| 115 |
#define MPIC_IPI_IRQ (MPIC_MSI_IRQ + MPIC_MAX_MSI)
|
| 116 |
|
| 117 |
#define MPIC_GLB_REG_START 0x0 |
| 118 |
#define MPIC_GLB_REG_SIZE 0x10F0 |
| 119 |
#define MPIC_TMR_REG_START 0x10F0 |
| 120 |
#define MPIC_TMR_REG_SIZE 0x220 |
| 121 |
#define MPIC_EXT_REG_START 0x10000 |
| 122 |
#define MPIC_EXT_REG_SIZE 0x180 |
| 123 |
#define MPIC_INT_REG_START 0x10200 |
| 124 |
#define MPIC_INT_REG_SIZE 0x800 |
| 125 |
#define MPIC_MSG_REG_START 0x11600 |
| 126 |
#define MPIC_MSG_REG_SIZE 0x100 |
| 127 |
#define MPIC_MSI_REG_START 0x11C00 |
| 128 |
#define MPIC_MSI_REG_SIZE 0x100 |
| 129 |
#define MPIC_CPU_REG_START 0x20000 |
| 130 |
#define MPIC_CPU_REG_SIZE 0x100 |
| 131 |
|
| 132 |
enum mpic_ide_bits {
|
| 133 |
IDR_EP = 0,
|
| 134 |
IDR_CI0 = 1,
|
| 135 |
IDR_CI1 = 2,
|
| 136 |
IDR_P1 = 30,
|
| 137 |
IDR_P0 = 31,
|
| 138 |
}; |
| 139 |
|
| 140 |
#else
|
| 141 |
#error "Please select which OpenPic implementation is to be emulated" |
| 142 |
#endif
|
| 143 |
|
| 144 |
#define BF_WIDTH(_bits_) \
|
| 145 |
(((_bits_) + (sizeof(uint32_t) * 8) - 1) / (sizeof(uint32_t) * 8)) |
| 146 |
|
| 147 |
static inline void set_bit (uint32_t *field, int bit) |
| 148 |
{
|
| 149 |
field[bit >> 5] |= 1 << (bit & 0x1F); |
| 150 |
} |
| 151 |
|
| 152 |
static inline void reset_bit (uint32_t *field, int bit) |
| 153 |
{
|
| 154 |
field[bit >> 5] &= ~(1 << (bit & 0x1F)); |
| 155 |
} |
| 156 |
|
| 157 |
static inline int test_bit (uint32_t *field, int bit) |
| 158 |
{
|
| 159 |
return (field[bit >> 5] & 1 << (bit & 0x1F)) != 0; |
| 160 |
} |
| 161 |
|
| 162 |
enum {
|
| 163 |
IRQ_EXTERNAL = 0x01,
|
| 164 |
IRQ_INTERNAL = 0x02,
|
| 165 |
IRQ_TIMER = 0x04,
|
| 166 |
IRQ_SPECIAL = 0x08,
|
| 167 |
}; |
| 168 |
|
| 169 |
typedef struct IRQ_queue_t { |
| 170 |
uint32_t queue[BF_WIDTH(MAX_IRQ)]; |
| 171 |
int next;
|
| 172 |
int priority;
|
| 173 |
} IRQ_queue_t; |
| 174 |
|
| 175 |
typedef struct IRQ_src_t { |
| 176 |
uint32_t ipvp; /* IRQ vector/priority register */
|
| 177 |
uint32_t ide; /* IRQ destination register */
|
| 178 |
int type;
|
| 179 |
int last_cpu;
|
| 180 |
int pending; /* TRUE if IRQ is pending */ |
| 181 |
} IRQ_src_t; |
| 182 |
|
| 183 |
enum IPVP_bits {
|
| 184 |
IPVP_MASK = 31,
|
| 185 |
IPVP_ACTIVITY = 30,
|
| 186 |
IPVP_MODE = 29,
|
| 187 |
IPVP_POLARITY = 23,
|
| 188 |
IPVP_SENSE = 22,
|
| 189 |
}; |
| 190 |
#define IPVP_PRIORITY_MASK (0x1F << 16) |
| 191 |
#define IPVP_PRIORITY(_ipvpr_) ((int)(((_ipvpr_) & IPVP_PRIORITY_MASK) >> 16)) |
| 192 |
#define IPVP_VECTOR_MASK ((1 << VECTOR_BITS) - 1) |
| 193 |
#define IPVP_VECTOR(_ipvpr_) ((_ipvpr_) & IPVP_VECTOR_MASK)
|
| 194 |
|
| 195 |
typedef struct IRQ_dst_t { |
| 196 |
uint32_t tfrr; |
| 197 |
uint32_t pctp; /* CPU current task priority */
|
| 198 |
uint32_t pcsr; /* CPU sensitivity register */
|
| 199 |
IRQ_queue_t raised; |
| 200 |
IRQ_queue_t servicing; |
| 201 |
qemu_irq *irqs; |
| 202 |
} IRQ_dst_t; |
| 203 |
|
| 204 |
typedef struct openpic_t { |
| 205 |
PCIDevice pci_dev; |
| 206 |
int mem_index;
|
| 207 |
/* Global registers */
|
| 208 |
uint32_t frep; /* Feature reporting register */
|
| 209 |
uint32_t glbc; /* Global configuration register */
|
| 210 |
uint32_t micr; /* MPIC interrupt configuration register */
|
| 211 |
uint32_t veni; /* Vendor identification register */
|
| 212 |
uint32_t pint; /* Processor initialization register */
|
| 213 |
uint32_t spve; /* Spurious vector register */
|
| 214 |
uint32_t tifr; /* Timer frequency reporting register */
|
| 215 |
/* Source registers */
|
| 216 |
IRQ_src_t src[MAX_IRQ]; |
| 217 |
/* Local registers per output pin */
|
| 218 |
IRQ_dst_t dst[MAX_CPU]; |
| 219 |
int nb_cpus;
|
| 220 |
/* Timer registers */
|
| 221 |
struct {
|
| 222 |
uint32_t ticc; /* Global timer current count register */
|
| 223 |
uint32_t tibc; /* Global timer base count register */
|
| 224 |
} timers[MAX_TMR]; |
| 225 |
#if MAX_DBL > 0 |
| 226 |
/* Doorbell registers */
|
| 227 |
uint32_t dar; /* Doorbell activate register */
|
| 228 |
struct {
|
| 229 |
uint32_t dmr; /* Doorbell messaging register */
|
| 230 |
} doorbells[MAX_DBL]; |
| 231 |
#endif
|
| 232 |
#if MAX_MBX > 0 |
| 233 |
/* Mailbox registers */
|
| 234 |
struct {
|
| 235 |
uint32_t mbr; /* Mailbox register */
|
| 236 |
} mailboxes[MAX_MAILBOXES]; |
| 237 |
#endif
|
| 238 |
/* IRQ out is used when in bypass mode (not implemented) */
|
| 239 |
qemu_irq irq_out; |
| 240 |
int max_irq;
|
| 241 |
int irq_ipi0;
|
| 242 |
int irq_tim0;
|
| 243 |
int need_swap;
|
| 244 |
void (*reset) (void *); |
| 245 |
void (*irq_raise) (struct openpic_t *, int, IRQ_src_t *); |
| 246 |
} openpic_t; |
| 247 |
|
| 248 |
static inline uint32_t openpic_swap32(openpic_t *opp, uint32_t val) |
| 249 |
{
|
| 250 |
if (opp->need_swap)
|
| 251 |
return bswap32(val);
|
| 252 |
|
| 253 |
return val;
|
| 254 |
} |
| 255 |
|
| 256 |
static inline void IRQ_setbit (IRQ_queue_t *q, int n_IRQ) |
| 257 |
{
|
| 258 |
set_bit(q->queue, n_IRQ); |
| 259 |
} |
| 260 |
|
| 261 |
static inline void IRQ_resetbit (IRQ_queue_t *q, int n_IRQ) |
| 262 |
{
|
| 263 |
reset_bit(q->queue, n_IRQ); |
| 264 |
} |
| 265 |
|
| 266 |
static inline int IRQ_testbit (IRQ_queue_t *q, int n_IRQ) |
| 267 |
{
|
| 268 |
return test_bit(q->queue, n_IRQ);
|
| 269 |
} |
| 270 |
|
| 271 |
static void IRQ_check (openpic_t *opp, IRQ_queue_t *q) |
| 272 |
{
|
| 273 |
int next, i;
|
| 274 |
int priority;
|
| 275 |
|
| 276 |
next = -1;
|
| 277 |
priority = -1;
|
| 278 |
for (i = 0; i < opp->max_irq; i++) { |
| 279 |
if (IRQ_testbit(q, i)) {
|
| 280 |
DPRINTF("IRQ_check: irq %d set ipvp_pr=%d pr=%d\n",
|
| 281 |
i, IPVP_PRIORITY(opp->src[i].ipvp), priority); |
| 282 |
if (IPVP_PRIORITY(opp->src[i].ipvp) > priority) {
|
| 283 |
next = i; |
| 284 |
priority = IPVP_PRIORITY(opp->src[i].ipvp); |
| 285 |
} |
| 286 |
} |
| 287 |
} |
| 288 |
q->next = next; |
| 289 |
q->priority = priority; |
| 290 |
} |
| 291 |
|
| 292 |
static int IRQ_get_next (openpic_t *opp, IRQ_queue_t *q) |
| 293 |
{
|
| 294 |
if (q->next == -1) { |
| 295 |
/* XXX: optimize */
|
| 296 |
IRQ_check(opp, q); |
| 297 |
} |
| 298 |
|
| 299 |
return q->next;
|
| 300 |
} |
| 301 |
|
| 302 |
static void IRQ_local_pipe (openpic_t *opp, int n_CPU, int n_IRQ) |
| 303 |
{
|
| 304 |
IRQ_dst_t *dst; |
| 305 |
IRQ_src_t *src; |
| 306 |
int priority;
|
| 307 |
|
| 308 |
dst = &opp->dst[n_CPU]; |
| 309 |
src = &opp->src[n_IRQ]; |
| 310 |
priority = IPVP_PRIORITY(src->ipvp); |
| 311 |
if (priority <= dst->pctp) {
|
| 312 |
/* Too low priority */
|
| 313 |
DPRINTF("%s: IRQ %d has too low priority on CPU %d\n",
|
| 314 |
__func__, n_IRQ, n_CPU); |
| 315 |
return;
|
| 316 |
} |
| 317 |
if (IRQ_testbit(&dst->raised, n_IRQ)) {
|
| 318 |
/* Interrupt miss */
|
| 319 |
DPRINTF("%s: IRQ %d was missed on CPU %d\n",
|
| 320 |
__func__, n_IRQ, n_CPU); |
| 321 |
return;
|
| 322 |
} |
| 323 |
set_bit(&src->ipvp, IPVP_ACTIVITY); |
| 324 |
IRQ_setbit(&dst->raised, n_IRQ); |
| 325 |
if (priority < dst->raised.priority) {
|
| 326 |
/* An higher priority IRQ is already raised */
|
| 327 |
DPRINTF("%s: IRQ %d is hidden by raised IRQ %d on CPU %d\n",
|
| 328 |
__func__, n_IRQ, dst->raised.next, n_CPU); |
| 329 |
return;
|
| 330 |
} |
| 331 |
IRQ_get_next(opp, &dst->raised); |
| 332 |
if (IRQ_get_next(opp, &dst->servicing) != -1 && |
| 333 |
priority <= dst->servicing.priority) {
|
| 334 |
DPRINTF("%s: IRQ %d is hidden by servicing IRQ %d on CPU %d\n",
|
| 335 |
__func__, n_IRQ, dst->servicing.next, n_CPU); |
| 336 |
/* Already servicing a higher priority IRQ */
|
| 337 |
return;
|
| 338 |
} |
| 339 |
DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n", n_CPU, n_IRQ);
|
| 340 |
opp->irq_raise(opp, n_CPU, src); |
| 341 |
} |
| 342 |
|
| 343 |
/* update pic state because registers for n_IRQ have changed value */
|
| 344 |
static void openpic_update_irq(openpic_t *opp, int n_IRQ) |
| 345 |
{
|
| 346 |
IRQ_src_t *src; |
| 347 |
int i;
|
| 348 |
|
| 349 |
src = &opp->src[n_IRQ]; |
| 350 |
|
| 351 |
if (!src->pending) {
|
| 352 |
/* no irq pending */
|
| 353 |
DPRINTF("%s: IRQ %d is not pending\n", __func__, n_IRQ);
|
| 354 |
return;
|
| 355 |
} |
| 356 |
if (test_bit(&src->ipvp, IPVP_MASK)) {
|
| 357 |
/* Interrupt source is disabled */
|
| 358 |
DPRINTF("%s: IRQ %d is disabled\n", __func__, n_IRQ);
|
| 359 |
return;
|
| 360 |
} |
| 361 |
if (IPVP_PRIORITY(src->ipvp) == 0) { |
| 362 |
/* Priority set to zero */
|
| 363 |
DPRINTF("%s: IRQ %d has 0 priority\n", __func__, n_IRQ);
|
| 364 |
return;
|
| 365 |
} |
| 366 |
if (test_bit(&src->ipvp, IPVP_ACTIVITY)) {
|
| 367 |
/* IRQ already active */
|
| 368 |
DPRINTF("%s: IRQ %d is already active\n", __func__, n_IRQ);
|
| 369 |
return;
|
| 370 |
} |
| 371 |
if (src->ide == 0x00000000) { |
| 372 |
/* No target */
|
| 373 |
DPRINTF("%s: IRQ %d has no target\n", __func__, n_IRQ);
|
| 374 |
return;
|
| 375 |
} |
| 376 |
|
| 377 |
if (src->ide == (1 << src->last_cpu)) { |
| 378 |
/* Only one CPU is allowed to receive this IRQ */
|
| 379 |
IRQ_local_pipe(opp, src->last_cpu, n_IRQ); |
| 380 |
} else if (!test_bit(&src->ipvp, IPVP_MODE)) { |
| 381 |
/* Directed delivery mode */
|
| 382 |
for (i = 0; i < opp->nb_cpus; i++) { |
| 383 |
if (test_bit(&src->ide, i))
|
| 384 |
IRQ_local_pipe(opp, i, n_IRQ); |
| 385 |
} |
| 386 |
} else {
|
| 387 |
/* Distributed delivery mode */
|
| 388 |
for (i = src->last_cpu + 1; i != src->last_cpu; i++) { |
| 389 |
if (i == opp->nb_cpus)
|
| 390 |
i = 0;
|
| 391 |
if (test_bit(&src->ide, i)) {
|
| 392 |
IRQ_local_pipe(opp, i, n_IRQ); |
| 393 |
src->last_cpu = i; |
| 394 |
break;
|
| 395 |
} |
| 396 |
} |
| 397 |
} |
| 398 |
} |
| 399 |
|
| 400 |
static void openpic_set_irq(void *opaque, int n_IRQ, int level) |
| 401 |
{
|
| 402 |
openpic_t *opp = opaque; |
| 403 |
IRQ_src_t *src; |
| 404 |
|
| 405 |
src = &opp->src[n_IRQ]; |
| 406 |
DPRINTF("openpic: set irq %d = %d ipvp=%08x\n",
|
| 407 |
n_IRQ, level, src->ipvp); |
| 408 |
if (test_bit(&src->ipvp, IPVP_SENSE)) {
|
| 409 |
/* level-sensitive irq */
|
| 410 |
src->pending = level; |
| 411 |
if (!level)
|
| 412 |
reset_bit(&src->ipvp, IPVP_ACTIVITY); |
| 413 |
} else {
|
| 414 |
/* edge-sensitive irq */
|
| 415 |
if (level)
|
| 416 |
src->pending = 1;
|
| 417 |
} |
| 418 |
openpic_update_irq(opp, n_IRQ); |
| 419 |
} |
| 420 |
|
| 421 |
static void openpic_reset (void *opaque) |
| 422 |
{
|
| 423 |
openpic_t *opp = (openpic_t *)opaque; |
| 424 |
int i;
|
| 425 |
|
| 426 |
opp->glbc = 0x80000000;
|
| 427 |
/* Initialise controller registers */
|
| 428 |
opp->frep = ((OPENPIC_EXT_IRQ - 1) << 16) | ((MAX_CPU - 1) << 8) | VID; |
| 429 |
opp->veni = VENI; |
| 430 |
opp->pint = 0x00000000;
|
| 431 |
opp->spve = 0x000000FF;
|
| 432 |
opp->tifr = 0x003F7A00;
|
| 433 |
/* ? */
|
| 434 |
opp->micr = 0x00000000;
|
| 435 |
/* Initialise IRQ sources */
|
| 436 |
for (i = 0; i < opp->max_irq; i++) { |
| 437 |
opp->src[i].ipvp = 0xA0000000;
|
| 438 |
opp->src[i].ide = 0x00000000;
|
| 439 |
} |
| 440 |
/* Initialise IRQ destinations */
|
| 441 |
for (i = 0; i < MAX_CPU; i++) { |
| 442 |
opp->dst[i].pctp = 0x0000000F;
|
| 443 |
opp->dst[i].pcsr = 0x00000000;
|
| 444 |
memset(&opp->dst[i].raised, 0, sizeof(IRQ_queue_t)); |
| 445 |
memset(&opp->dst[i].servicing, 0, sizeof(IRQ_queue_t)); |
| 446 |
} |
| 447 |
/* Initialise timers */
|
| 448 |
for (i = 0; i < MAX_TMR; i++) { |
| 449 |
opp->timers[i].ticc = 0x00000000;
|
| 450 |
opp->timers[i].tibc = 0x80000000;
|
| 451 |
} |
| 452 |
/* Initialise doorbells */
|
| 453 |
#if MAX_DBL > 0 |
| 454 |
opp->dar = 0x00000000;
|
| 455 |
for (i = 0; i < MAX_DBL; i++) { |
| 456 |
opp->doorbells[i].dmr = 0x00000000;
|
| 457 |
} |
| 458 |
#endif
|
| 459 |
/* Initialise mailboxes */
|
| 460 |
#if MAX_MBX > 0 |
| 461 |
for (i = 0; i < MAX_MBX; i++) { /* ? */ |
| 462 |
opp->mailboxes[i].mbr = 0x00000000;
|
| 463 |
} |
| 464 |
#endif
|
| 465 |
/* Go out of RESET state */
|
| 466 |
opp->glbc = 0x00000000;
|
| 467 |
} |
| 468 |
|
| 469 |
static inline uint32_t read_IRQreg (openpic_t *opp, int n_IRQ, uint32_t reg) |
| 470 |
{
|
| 471 |
uint32_t retval; |
| 472 |
|
| 473 |
switch (reg) {
|
| 474 |
case IRQ_IPVP:
|
| 475 |
retval = opp->src[n_IRQ].ipvp; |
| 476 |
break;
|
| 477 |
case IRQ_IDE:
|
| 478 |
retval = opp->src[n_IRQ].ide; |
| 479 |
break;
|
| 480 |
} |
| 481 |
|
| 482 |
return retval;
|
| 483 |
} |
| 484 |
|
| 485 |
static inline void write_IRQreg (openpic_t *opp, int n_IRQ, |
| 486 |
uint32_t reg, uint32_t val) |
| 487 |
{
|
| 488 |
uint32_t tmp; |
| 489 |
|
| 490 |
switch (reg) {
|
| 491 |
case IRQ_IPVP:
|
| 492 |
/* NOTE: not fully accurate for special IRQs, but simple and
|
| 493 |
sufficient */
|
| 494 |
/* ACTIVITY bit is read-only */
|
| 495 |
opp->src[n_IRQ].ipvp = |
| 496 |
(opp->src[n_IRQ].ipvp & 0x40000000) |
|
| 497 |
(val & 0x800F00FF);
|
| 498 |
openpic_update_irq(opp, n_IRQ); |
| 499 |
DPRINTF("Set IPVP %d to 0x%08x -> 0x%08x\n",
|
| 500 |
n_IRQ, val, opp->src[n_IRQ].ipvp); |
| 501 |
break;
|
| 502 |
case IRQ_IDE:
|
| 503 |
tmp = val & 0xC0000000;
|
| 504 |
tmp |= val & ((1 << MAX_CPU) - 1); |
| 505 |
opp->src[n_IRQ].ide = tmp; |
| 506 |
DPRINTF("Set IDE %d to 0x%08x\n", n_IRQ, opp->src[n_IRQ].ide);
|
| 507 |
break;
|
| 508 |
} |
| 509 |
} |
| 510 |
|
| 511 |
#if 0 // Code provision for Intel model
|
| 512 |
#if MAX_DBL > 0
|
| 513 |
static uint32_t read_doorbell_register (openpic_t *opp,
|
| 514 |
int n_dbl, uint32_t offset)
|
| 515 |
{
|
| 516 |
uint32_t retval;
|
| 517 |
|
| 518 |
switch (offset) {
|
| 519 |
case DBL_IPVP_OFFSET:
|
| 520 |
retval = read_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IPVP);
|
| 521 |
break;
|
| 522 |
case DBL_IDE_OFFSET:
|
| 523 |
retval = read_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IDE);
|
| 524 |
break;
|
| 525 |
case DBL_DMR_OFFSET:
|
| 526 |
retval = opp->doorbells[n_dbl].dmr;
|
| 527 |
break;
|
| 528 |
}
|
| 529 |
|
| 530 |
return retval;
|
| 531 |
}
|
| 532 |
|
| 533 |
static void write_doorbell_register (penpic_t *opp, int n_dbl,
|
| 534 |
uint32_t offset, uint32_t value)
|
| 535 |
{
|
| 536 |
switch (offset) {
|
| 537 |
case DBL_IVPR_OFFSET:
|
| 538 |
write_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IPVP, value);
|
| 539 |
break;
|
| 540 |
case DBL_IDE_OFFSET:
|
| 541 |
write_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IDE, value);
|
| 542 |
break;
|
| 543 |
case DBL_DMR_OFFSET:
|
| 544 |
opp->doorbells[n_dbl].dmr = value;
|
| 545 |
break;
|
| 546 |
}
|
| 547 |
}
|
| 548 |
#endif
|
| 549 |
|
| 550 |
#if MAX_MBX > 0 |
| 551 |
static uint32_t read_mailbox_register (openpic_t *opp,
|
| 552 |
int n_mbx, uint32_t offset)
|
| 553 |
{
|
| 554 |
uint32_t retval; |
| 555 |
|
| 556 |
switch (offset) {
|
| 557 |
case MBX_MBR_OFFSET:
|
| 558 |
retval = opp->mailboxes[n_mbx].mbr; |
| 559 |
break;
|
| 560 |
case MBX_IVPR_OFFSET:
|
| 561 |
retval = read_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IPVP); |
| 562 |
break;
|
| 563 |
case MBX_DMR_OFFSET:
|
| 564 |
retval = read_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IDE); |
| 565 |
break;
|
| 566 |
} |
| 567 |
|
| 568 |
return retval;
|
| 569 |
} |
| 570 |
|
| 571 |
static void write_mailbox_register (openpic_t *opp, int n_mbx, |
| 572 |
uint32_t address, uint32_t value) |
| 573 |
{
|
| 574 |
switch (offset) {
|
| 575 |
case MBX_MBR_OFFSET:
|
| 576 |
opp->mailboxes[n_mbx].mbr = value; |
| 577 |
break;
|
| 578 |
case MBX_IVPR_OFFSET:
|
| 579 |
write_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IPVP, value); |
| 580 |
break;
|
| 581 |
case MBX_DMR_OFFSET:
|
| 582 |
write_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IDE, value); |
| 583 |
break;
|
| 584 |
} |
| 585 |
} |
| 586 |
#endif
|
| 587 |
#endif /* 0 : Code provision for Intel model */ |
| 588 |
|
| 589 |
static void openpic_gbl_write (void *opaque, target_phys_addr_t addr, uint32_t val) |
| 590 |
{
|
| 591 |
openpic_t *opp = opaque; |
| 592 |
IRQ_dst_t *dst; |
| 593 |
int idx;
|
| 594 |
|
| 595 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 596 |
if (addr & 0xF) |
| 597 |
return;
|
| 598 |
#if defined TARGET_WORDS_BIGENDIAN
|
| 599 |
val = openpic_swap32(opp, val); |
| 600 |
#endif
|
| 601 |
addr &= 0xFF;
|
| 602 |
switch (addr) {
|
| 603 |
case 0x00: /* FREP */ |
| 604 |
break;
|
| 605 |
case 0x20: /* GLBC */ |
| 606 |
if (val & 0x80000000 && opp->reset) |
| 607 |
opp->reset(opp); |
| 608 |
opp->glbc = val & ~0x80000000;
|
| 609 |
break;
|
| 610 |
case 0x80: /* VENI */ |
| 611 |
break;
|
| 612 |
case 0x90: /* PINT */ |
| 613 |
for (idx = 0; idx < opp->nb_cpus; idx++) { |
| 614 |
if ((val & (1 << idx)) && !(opp->pint & (1 << idx))) { |
| 615 |
DPRINTF("Raise OpenPIC RESET output for CPU %d\n", idx);
|
| 616 |
dst = &opp->dst[idx]; |
| 617 |
qemu_irq_raise(dst->irqs[OPENPIC_OUTPUT_RESET]); |
| 618 |
} else if (!(val & (1 << idx)) && (opp->pint & (1 << idx))) { |
| 619 |
DPRINTF("Lower OpenPIC RESET output for CPU %d\n", idx);
|
| 620 |
dst = &opp->dst[idx]; |
| 621 |
qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_RESET]); |
| 622 |
} |
| 623 |
} |
| 624 |
opp->pint = val; |
| 625 |
break;
|
| 626 |
#if MAX_IPI > 0 |
| 627 |
case 0xA0: /* IPI_IPVP */ |
| 628 |
case 0xB0: |
| 629 |
case 0xC0: |
| 630 |
case 0xD0: |
| 631 |
{
|
| 632 |
int idx;
|
| 633 |
idx = (addr - 0xA0) >> 4; |
| 634 |
write_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IPVP, val); |
| 635 |
} |
| 636 |
break;
|
| 637 |
#endif
|
| 638 |
case 0xE0: /* SPVE */ |
| 639 |
opp->spve = val & 0x000000FF;
|
| 640 |
break;
|
| 641 |
case 0xF0: /* TIFR */ |
| 642 |
opp->tifr = val; |
| 643 |
break;
|
| 644 |
default:
|
| 645 |
break;
|
| 646 |
} |
| 647 |
} |
| 648 |
|
| 649 |
static uint32_t openpic_gbl_read (void *opaque, target_phys_addr_t addr) |
| 650 |
{
|
| 651 |
openpic_t *opp = opaque; |
| 652 |
uint32_t retval; |
| 653 |
|
| 654 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 655 |
retval = 0xFFFFFFFF;
|
| 656 |
if (addr & 0xF) |
| 657 |
return retval;
|
| 658 |
addr &= 0xFF;
|
| 659 |
switch (addr) {
|
| 660 |
case 0x00: /* FREP */ |
| 661 |
retval = opp->frep; |
| 662 |
break;
|
| 663 |
case 0x20: /* GLBC */ |
| 664 |
retval = opp->glbc; |
| 665 |
break;
|
| 666 |
case 0x80: /* VENI */ |
| 667 |
retval = opp->veni; |
| 668 |
break;
|
| 669 |
case 0x90: /* PINT */ |
| 670 |
retval = 0x00000000;
|
| 671 |
break;
|
| 672 |
#if MAX_IPI > 0 |
| 673 |
case 0xA0: /* IPI_IPVP */ |
| 674 |
case 0xB0: |
| 675 |
case 0xC0: |
| 676 |
case 0xD0: |
| 677 |
{
|
| 678 |
int idx;
|
| 679 |
idx = (addr - 0xA0) >> 4; |
| 680 |
retval = read_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IPVP); |
| 681 |
} |
| 682 |
break;
|
| 683 |
#endif
|
| 684 |
case 0xE0: /* SPVE */ |
| 685 |
retval = opp->spve; |
| 686 |
break;
|
| 687 |
case 0xF0: /* TIFR */ |
| 688 |
retval = opp->tifr; |
| 689 |
break;
|
| 690 |
default:
|
| 691 |
break;
|
| 692 |
} |
| 693 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 694 |
#if defined TARGET_WORDS_BIGENDIAN
|
| 695 |
retval = openpic_swap32(opp, retval); |
| 696 |
#endif
|
| 697 |
|
| 698 |
return retval;
|
| 699 |
} |
| 700 |
|
| 701 |
static void openpic_timer_write (void *opaque, uint32_t addr, uint32_t val) |
| 702 |
{
|
| 703 |
openpic_t *opp = opaque; |
| 704 |
int idx;
|
| 705 |
|
| 706 |
DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
|
| 707 |
if (addr & 0xF) |
| 708 |
return;
|
| 709 |
#if defined TARGET_WORDS_BIGENDIAN
|
| 710 |
val = openpic_swap32(opp, val); |
| 711 |
#endif
|
| 712 |
addr -= 0x1100;
|
| 713 |
addr &= 0xFFFF;
|
| 714 |
idx = (addr & 0xFFF0) >> 6; |
| 715 |
addr = addr & 0x30;
|
| 716 |
switch (addr) {
|
| 717 |
case 0x00: /* TICC */ |
| 718 |
break;
|
| 719 |
case 0x10: /* TIBC */ |
| 720 |
if ((opp->timers[idx].ticc & 0x80000000) != 0 && |
| 721 |
(val & 0x80000000) == 0 && |
| 722 |
(opp->timers[idx].tibc & 0x80000000) != 0) |
| 723 |
opp->timers[idx].ticc &= ~0x80000000;
|
| 724 |
opp->timers[idx].tibc = val; |
| 725 |
break;
|
| 726 |
case 0x20: /* TIVP */ |
| 727 |
write_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IPVP, val); |
| 728 |
break;
|
| 729 |
case 0x30: /* TIDE */ |
| 730 |
write_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IDE, val); |
| 731 |
break;
|
| 732 |
} |
| 733 |
} |
| 734 |
|
| 735 |
static uint32_t openpic_timer_read (void *opaque, uint32_t addr) |
| 736 |
{
|
| 737 |
openpic_t *opp = opaque; |
| 738 |
uint32_t retval; |
| 739 |
int idx;
|
| 740 |
|
| 741 |
DPRINTF("%s: addr %08x\n", __func__, addr);
|
| 742 |
retval = 0xFFFFFFFF;
|
| 743 |
if (addr & 0xF) |
| 744 |
return retval;
|
| 745 |
addr -= 0x1100;
|
| 746 |
addr &= 0xFFFF;
|
| 747 |
idx = (addr & 0xFFF0) >> 6; |
| 748 |
addr = addr & 0x30;
|
| 749 |
switch (addr) {
|
| 750 |
case 0x00: /* TICC */ |
| 751 |
retval = opp->timers[idx].ticc; |
| 752 |
break;
|
| 753 |
case 0x10: /* TIBC */ |
| 754 |
retval = opp->timers[idx].tibc; |
| 755 |
break;
|
| 756 |
case 0x20: /* TIPV */ |
| 757 |
retval = read_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IPVP); |
| 758 |
break;
|
| 759 |
case 0x30: /* TIDE */ |
| 760 |
retval = read_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IDE); |
| 761 |
break;
|
| 762 |
} |
| 763 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 764 |
#if defined TARGET_WORDS_BIGENDIAN
|
| 765 |
retval = openpic_swap32(opp, retval); |
| 766 |
#endif
|
| 767 |
|
| 768 |
return retval;
|
| 769 |
} |
| 770 |
|
| 771 |
static void openpic_src_write (void *opaque, uint32_t addr, uint32_t val) |
| 772 |
{
|
| 773 |
openpic_t *opp = opaque; |
| 774 |
int idx;
|
| 775 |
|
| 776 |
DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
|
| 777 |
if (addr & 0xF) |
| 778 |
return;
|
| 779 |
#if defined TARGET_WORDS_BIGENDIAN
|
| 780 |
val = openpic_swap32(opp, val); |
| 781 |
#endif
|
| 782 |
addr = addr & 0xFFF0;
|
| 783 |
idx = addr >> 5;
|
| 784 |
if (addr & 0x10) { |
| 785 |
/* EXDE / IFEDE / IEEDE */
|
| 786 |
write_IRQreg(opp, idx, IRQ_IDE, val); |
| 787 |
} else {
|
| 788 |
/* EXVP / IFEVP / IEEVP */
|
| 789 |
write_IRQreg(opp, idx, IRQ_IPVP, val); |
| 790 |
} |
| 791 |
} |
| 792 |
|
| 793 |
static uint32_t openpic_src_read (void *opaque, uint32_t addr) |
| 794 |
{
|
| 795 |
openpic_t *opp = opaque; |
| 796 |
uint32_t retval; |
| 797 |
int idx;
|
| 798 |
|
| 799 |
DPRINTF("%s: addr %08x\n", __func__, addr);
|
| 800 |
retval = 0xFFFFFFFF;
|
| 801 |
if (addr & 0xF) |
| 802 |
return retval;
|
| 803 |
addr = addr & 0xFFF0;
|
| 804 |
idx = addr >> 5;
|
| 805 |
if (addr & 0x10) { |
| 806 |
/* EXDE / IFEDE / IEEDE */
|
| 807 |
retval = read_IRQreg(opp, idx, IRQ_IDE); |
| 808 |
} else {
|
| 809 |
/* EXVP / IFEVP / IEEVP */
|
| 810 |
retval = read_IRQreg(opp, idx, IRQ_IPVP); |
| 811 |
} |
| 812 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 813 |
#if defined TARGET_WORDS_BIGENDIAN
|
| 814 |
retval = openpic_swap32(opp, retval); |
| 815 |
#endif
|
| 816 |
|
| 817 |
return retval;
|
| 818 |
} |
| 819 |
|
| 820 |
static void openpic_cpu_write (void *opaque, target_phys_addr_t addr, uint32_t val) |
| 821 |
{
|
| 822 |
openpic_t *opp = opaque; |
| 823 |
IRQ_src_t *src; |
| 824 |
IRQ_dst_t *dst; |
| 825 |
int idx, s_IRQ, n_IRQ;
|
| 826 |
|
| 827 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 828 |
if (addr & 0xF) |
| 829 |
return;
|
| 830 |
#if defined TARGET_WORDS_BIGENDIAN
|
| 831 |
val = openpic_swap32(opp, val); |
| 832 |
#endif
|
| 833 |
addr &= 0x1FFF0;
|
| 834 |
idx = addr / 0x1000;
|
| 835 |
dst = &opp->dst[idx]; |
| 836 |
addr &= 0xFF0;
|
| 837 |
switch (addr) {
|
| 838 |
#if MAX_IPI > 0 |
| 839 |
case 0x40: /* PIPD */ |
| 840 |
case 0x50: |
| 841 |
case 0x60: |
| 842 |
case 0x70: |
| 843 |
idx = (addr - 0x40) >> 4; |
| 844 |
write_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IDE, val); |
| 845 |
openpic_set_irq(opp, opp->irq_ipi0 + idx, 1);
|
| 846 |
openpic_set_irq(opp, opp->irq_ipi0 + idx, 0);
|
| 847 |
break;
|
| 848 |
#endif
|
| 849 |
case 0x80: /* PCTP */ |
| 850 |
dst->pctp = val & 0x0000000F;
|
| 851 |
break;
|
| 852 |
case 0x90: /* WHOAMI */ |
| 853 |
/* Read-only register */
|
| 854 |
break;
|
| 855 |
case 0xA0: /* PIAC */ |
| 856 |
/* Read-only register */
|
| 857 |
break;
|
| 858 |
case 0xB0: /* PEOI */ |
| 859 |
DPRINTF("PEOI\n");
|
| 860 |
s_IRQ = IRQ_get_next(opp, &dst->servicing); |
| 861 |
IRQ_resetbit(&dst->servicing, s_IRQ); |
| 862 |
dst->servicing.next = -1;
|
| 863 |
/* Set up next servicing IRQ */
|
| 864 |
s_IRQ = IRQ_get_next(opp, &dst->servicing); |
| 865 |
/* Check queued interrupts. */
|
| 866 |
n_IRQ = IRQ_get_next(opp, &dst->raised); |
| 867 |
src = &opp->src[n_IRQ]; |
| 868 |
if (n_IRQ != -1 && |
| 869 |
(s_IRQ == -1 ||
|
| 870 |
IPVP_PRIORITY(src->ipvp) > dst->servicing.priority)) {
|
| 871 |
DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n",
|
| 872 |
idx, n_IRQ); |
| 873 |
opp->irq_raise(opp, idx, src); |
| 874 |
} |
| 875 |
break;
|
| 876 |
default:
|
| 877 |
break;
|
| 878 |
} |
| 879 |
} |
| 880 |
|
| 881 |
static uint32_t openpic_cpu_read (void *opaque, target_phys_addr_t addr) |
| 882 |
{
|
| 883 |
openpic_t *opp = opaque; |
| 884 |
IRQ_src_t *src; |
| 885 |
IRQ_dst_t *dst; |
| 886 |
uint32_t retval; |
| 887 |
int idx, n_IRQ;
|
| 888 |
|
| 889 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 890 |
retval = 0xFFFFFFFF;
|
| 891 |
if (addr & 0xF) |
| 892 |
return retval;
|
| 893 |
addr &= 0x1FFF0;
|
| 894 |
idx = addr / 0x1000;
|
| 895 |
dst = &opp->dst[idx]; |
| 896 |
addr &= 0xFF0;
|
| 897 |
switch (addr) {
|
| 898 |
case 0x80: /* PCTP */ |
| 899 |
retval = dst->pctp; |
| 900 |
break;
|
| 901 |
case 0x90: /* WHOAMI */ |
| 902 |
retval = idx; |
| 903 |
break;
|
| 904 |
case 0xA0: /* PIAC */ |
| 905 |
DPRINTF("Lower OpenPIC INT output\n");
|
| 906 |
qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_INT]); |
| 907 |
n_IRQ = IRQ_get_next(opp, &dst->raised); |
| 908 |
DPRINTF("PIAC: irq=%d\n", n_IRQ);
|
| 909 |
if (n_IRQ == -1) { |
| 910 |
/* No more interrupt pending */
|
| 911 |
retval = IPVP_VECTOR(opp->spve); |
| 912 |
} else {
|
| 913 |
src = &opp->src[n_IRQ]; |
| 914 |
if (!test_bit(&src->ipvp, IPVP_ACTIVITY) ||
|
| 915 |
!(IPVP_PRIORITY(src->ipvp) > dst->pctp)) {
|
| 916 |
/* - Spurious level-sensitive IRQ
|
| 917 |
* - Priorities has been changed
|
| 918 |
* and the pending IRQ isn't allowed anymore
|
| 919 |
*/
|
| 920 |
reset_bit(&src->ipvp, IPVP_ACTIVITY); |
| 921 |
retval = IPVP_VECTOR(opp->spve); |
| 922 |
} else {
|
| 923 |
/* IRQ enter servicing state */
|
| 924 |
IRQ_setbit(&dst->servicing, n_IRQ); |
| 925 |
retval = IPVP_VECTOR(src->ipvp); |
| 926 |
} |
| 927 |
IRQ_resetbit(&dst->raised, n_IRQ); |
| 928 |
dst->raised.next = -1;
|
| 929 |
if (!test_bit(&src->ipvp, IPVP_SENSE)) {
|
| 930 |
/* edge-sensitive IRQ */
|
| 931 |
reset_bit(&src->ipvp, IPVP_ACTIVITY); |
| 932 |
src->pending = 0;
|
| 933 |
} |
| 934 |
} |
| 935 |
break;
|
| 936 |
case 0xB0: /* PEOI */ |
| 937 |
retval = 0;
|
| 938 |
break;
|
| 939 |
#if MAX_IPI > 0 |
| 940 |
case 0x40: /* IDE */ |
| 941 |
case 0x50: |
| 942 |
idx = (addr - 0x40) >> 4; |
| 943 |
retval = read_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IDE); |
| 944 |
break;
|
| 945 |
#endif
|
| 946 |
default:
|
| 947 |
break;
|
| 948 |
} |
| 949 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 950 |
#if defined TARGET_WORDS_BIGENDIAN
|
| 951 |
retval = openpic_swap32(opp, retval); |
| 952 |
#endif
|
| 953 |
|
| 954 |
return retval;
|
| 955 |
} |
| 956 |
|
| 957 |
static void openpic_buggy_write (void *opaque, |
| 958 |
target_phys_addr_t addr, uint32_t val) |
| 959 |
{
|
| 960 |
printf("Invalid OPENPIC write access !\n");
|
| 961 |
} |
| 962 |
|
| 963 |
static uint32_t openpic_buggy_read (void *opaque, target_phys_addr_t addr) |
| 964 |
{
|
| 965 |
printf("Invalid OPENPIC read access !\n");
|
| 966 |
|
| 967 |
return -1; |
| 968 |
} |
| 969 |
|
| 970 |
static void openpic_writel (void *opaque, |
| 971 |
target_phys_addr_t addr, uint32_t val) |
| 972 |
{
|
| 973 |
openpic_t *opp = opaque; |
| 974 |
|
| 975 |
addr &= 0x3FFFF;
|
| 976 |
DPRINTF("%s: offset %08x val: %08x\n", __func__, (int)addr, val); |
| 977 |
if (addr < 0x1100) { |
| 978 |
/* Global registers */
|
| 979 |
openpic_gbl_write(opp, addr, val); |
| 980 |
} else if (addr < 0x10000) { |
| 981 |
/* Timers registers */
|
| 982 |
openpic_timer_write(opp, addr, val); |
| 983 |
} else if (addr < 0x20000) { |
| 984 |
/* Source registers */
|
| 985 |
openpic_src_write(opp, addr, val); |
| 986 |
} else {
|
| 987 |
/* CPU registers */
|
| 988 |
openpic_cpu_write(opp, addr, val); |
| 989 |
} |
| 990 |
} |
| 991 |
|
| 992 |
static uint32_t openpic_readl (void *opaque,target_phys_addr_t addr) |
| 993 |
{
|
| 994 |
openpic_t *opp = opaque; |
| 995 |
uint32_t retval; |
| 996 |
|
| 997 |
addr &= 0x3FFFF;
|
| 998 |
DPRINTF("%s: offset %08x\n", __func__, (int)addr); |
| 999 |
if (addr < 0x1100) { |
| 1000 |
/* Global registers */
|
| 1001 |
retval = openpic_gbl_read(opp, addr); |
| 1002 |
} else if (addr < 0x10000) { |
| 1003 |
/* Timers registers */
|
| 1004 |
retval = openpic_timer_read(opp, addr); |
| 1005 |
} else if (addr < 0x20000) { |
| 1006 |
/* Source registers */
|
| 1007 |
retval = openpic_src_read(opp, addr); |
| 1008 |
} else {
|
| 1009 |
/* CPU registers */
|
| 1010 |
retval = openpic_cpu_read(opp, addr); |
| 1011 |
} |
| 1012 |
|
| 1013 |
return retval;
|
| 1014 |
} |
| 1015 |
|
| 1016 |
static CPUWriteMemoryFunc * const openpic_write[] = { |
| 1017 |
&openpic_buggy_write, |
| 1018 |
&openpic_buggy_write, |
| 1019 |
&openpic_writel, |
| 1020 |
}; |
| 1021 |
|
| 1022 |
static CPUReadMemoryFunc * const openpic_read[] = { |
| 1023 |
&openpic_buggy_read, |
| 1024 |
&openpic_buggy_read, |
| 1025 |
&openpic_readl, |
| 1026 |
}; |
| 1027 |
|
| 1028 |
static void openpic_map(PCIDevice *pci_dev, int region_num, |
| 1029 |
pcibus_t addr, pcibus_t size, int type)
|
| 1030 |
{
|
| 1031 |
openpic_t *opp; |
| 1032 |
|
| 1033 |
DPRINTF("Map OpenPIC\n");
|
| 1034 |
opp = (openpic_t *)pci_dev; |
| 1035 |
/* Global registers */
|
| 1036 |
DPRINTF("Register OPENPIC gbl %08x => %08x\n",
|
| 1037 |
addr + 0x1000, addr + 0x1000 + 0x100); |
| 1038 |
/* Timer registers */
|
| 1039 |
DPRINTF("Register OPENPIC timer %08x => %08x\n",
|
| 1040 |
addr + 0x1100, addr + 0x1100 + 0x40 * MAX_TMR); |
| 1041 |
/* Interrupt source registers */
|
| 1042 |
DPRINTF("Register OPENPIC src %08x => %08x\n",
|
| 1043 |
addr + 0x10000, addr + 0x10000 + 0x20 * (OPENPIC_EXT_IRQ + 2)); |
| 1044 |
/* Per CPU registers */
|
| 1045 |
DPRINTF("Register OPENPIC dst %08x => %08x\n",
|
| 1046 |
addr + 0x20000, addr + 0x20000 + 0x1000 * MAX_CPU); |
| 1047 |
cpu_register_physical_memory(addr, 0x40000, opp->mem_index);
|
| 1048 |
#if 0 // Don't implement ISU for now
|
| 1049 |
opp_io_memory = cpu_register_io_memory(openpic_src_read,
|
| 1050 |
openpic_src_write);
|
| 1051 |
cpu_register_physical_memory(isu_base, 0x20 * (EXT_IRQ + 2),
|
| 1052 |
opp_io_memory);
|
| 1053 |
#endif
|
| 1054 |
} |
| 1055 |
|
| 1056 |
static void openpic_save_IRQ_queue(QEMUFile* f, IRQ_queue_t *q) |
| 1057 |
{
|
| 1058 |
unsigned int i; |
| 1059 |
|
| 1060 |
for (i = 0; i < BF_WIDTH(MAX_IRQ); i++) |
| 1061 |
qemu_put_be32s(f, &q->queue[i]); |
| 1062 |
|
| 1063 |
qemu_put_sbe32s(f, &q->next); |
| 1064 |
qemu_put_sbe32s(f, &q->priority); |
| 1065 |
} |
| 1066 |
|
| 1067 |
static void openpic_save(QEMUFile* f, void *opaque) |
| 1068 |
{
|
| 1069 |
openpic_t *opp = (openpic_t *)opaque; |
| 1070 |
unsigned int i; |
| 1071 |
|
| 1072 |
qemu_put_be32s(f, &opp->frep); |
| 1073 |
qemu_put_be32s(f, &opp->glbc); |
| 1074 |
qemu_put_be32s(f, &opp->micr); |
| 1075 |
qemu_put_be32s(f, &opp->veni); |
| 1076 |
qemu_put_be32s(f, &opp->pint); |
| 1077 |
qemu_put_be32s(f, &opp->spve); |
| 1078 |
qemu_put_be32s(f, &opp->tifr); |
| 1079 |
|
| 1080 |
for (i = 0; i < opp->max_irq; i++) { |
| 1081 |
qemu_put_be32s(f, &opp->src[i].ipvp); |
| 1082 |
qemu_put_be32s(f, &opp->src[i].ide); |
| 1083 |
qemu_put_sbe32s(f, &opp->src[i].type); |
| 1084 |
qemu_put_sbe32s(f, &opp->src[i].last_cpu); |
| 1085 |
qemu_put_sbe32s(f, &opp->src[i].pending); |
| 1086 |
} |
| 1087 |
|
| 1088 |
qemu_put_sbe32s(f, &opp->nb_cpus); |
| 1089 |
|
| 1090 |
for (i = 0; i < opp->nb_cpus; i++) { |
| 1091 |
qemu_put_be32s(f, &opp->dst[i].tfrr); |
| 1092 |
qemu_put_be32s(f, &opp->dst[i].pctp); |
| 1093 |
qemu_put_be32s(f, &opp->dst[i].pcsr); |
| 1094 |
openpic_save_IRQ_queue(f, &opp->dst[i].raised); |
| 1095 |
openpic_save_IRQ_queue(f, &opp->dst[i].servicing); |
| 1096 |
} |
| 1097 |
|
| 1098 |
for (i = 0; i < MAX_TMR; i++) { |
| 1099 |
qemu_put_be32s(f, &opp->timers[i].ticc); |
| 1100 |
qemu_put_be32s(f, &opp->timers[i].tibc); |
| 1101 |
} |
| 1102 |
|
| 1103 |
#if MAX_DBL > 0 |
| 1104 |
qemu_put_be32s(f, &opp->dar); |
| 1105 |
|
| 1106 |
for (i = 0; i < MAX_DBL; i++) { |
| 1107 |
qemu_put_be32s(f, &opp->doorbells[i].dmr); |
| 1108 |
} |
| 1109 |
#endif
|
| 1110 |
|
| 1111 |
#if MAX_MBX > 0 |
| 1112 |
for (i = 0; i < MAX_MAILBOXES; i++) { |
| 1113 |
qemu_put_be32s(f, &opp->mailboxes[i].mbr); |
| 1114 |
} |
| 1115 |
#endif
|
| 1116 |
|
| 1117 |
pci_device_save(&opp->pci_dev, f); |
| 1118 |
} |
| 1119 |
|
| 1120 |
static void openpic_load_IRQ_queue(QEMUFile* f, IRQ_queue_t *q) |
| 1121 |
{
|
| 1122 |
unsigned int i; |
| 1123 |
|
| 1124 |
for (i = 0; i < BF_WIDTH(MAX_IRQ); i++) |
| 1125 |
qemu_get_be32s(f, &q->queue[i]); |
| 1126 |
|
| 1127 |
qemu_get_sbe32s(f, &q->next); |
| 1128 |
qemu_get_sbe32s(f, &q->priority); |
| 1129 |
} |
| 1130 |
|
| 1131 |
static int openpic_load(QEMUFile* f, void *opaque, int version_id) |
| 1132 |
{
|
| 1133 |
openpic_t *opp = (openpic_t *)opaque; |
| 1134 |
unsigned int i; |
| 1135 |
|
| 1136 |
if (version_id != 1) |
| 1137 |
return -EINVAL;
|
| 1138 |
|
| 1139 |
qemu_get_be32s(f, &opp->frep); |
| 1140 |
qemu_get_be32s(f, &opp->glbc); |
| 1141 |
qemu_get_be32s(f, &opp->micr); |
| 1142 |
qemu_get_be32s(f, &opp->veni); |
| 1143 |
qemu_get_be32s(f, &opp->pint); |
| 1144 |
qemu_get_be32s(f, &opp->spve); |
| 1145 |
qemu_get_be32s(f, &opp->tifr); |
| 1146 |
|
| 1147 |
for (i = 0; i < opp->max_irq; i++) { |
| 1148 |
qemu_get_be32s(f, &opp->src[i].ipvp); |
| 1149 |
qemu_get_be32s(f, &opp->src[i].ide); |
| 1150 |
qemu_get_sbe32s(f, &opp->src[i].type); |
| 1151 |
qemu_get_sbe32s(f, &opp->src[i].last_cpu); |
| 1152 |
qemu_get_sbe32s(f, &opp->src[i].pending); |
| 1153 |
} |
| 1154 |
|
| 1155 |
qemu_get_sbe32s(f, &opp->nb_cpus); |
| 1156 |
|
| 1157 |
for (i = 0; i < opp->nb_cpus; i++) { |
| 1158 |
qemu_get_be32s(f, &opp->dst[i].tfrr); |
| 1159 |
qemu_get_be32s(f, &opp->dst[i].pctp); |
| 1160 |
qemu_get_be32s(f, &opp->dst[i].pcsr); |
| 1161 |
openpic_load_IRQ_queue(f, &opp->dst[i].raised); |
| 1162 |
openpic_load_IRQ_queue(f, &opp->dst[i].servicing); |
| 1163 |
} |
| 1164 |
|
| 1165 |
for (i = 0; i < MAX_TMR; i++) { |
| 1166 |
qemu_get_be32s(f, &opp->timers[i].ticc); |
| 1167 |
qemu_get_be32s(f, &opp->timers[i].tibc); |
| 1168 |
} |
| 1169 |
|
| 1170 |
#if MAX_DBL > 0 |
| 1171 |
qemu_get_be32s(f, &opp->dar); |
| 1172 |
|
| 1173 |
for (i = 0; i < MAX_DBL; i++) { |
| 1174 |
qemu_get_be32s(f, &opp->doorbells[i].dmr); |
| 1175 |
} |
| 1176 |
#endif
|
| 1177 |
|
| 1178 |
#if MAX_MBX > 0 |
| 1179 |
for (i = 0; i < MAX_MAILBOXES; i++) { |
| 1180 |
qemu_get_be32s(f, &opp->mailboxes[i].mbr); |
| 1181 |
} |
| 1182 |
#endif
|
| 1183 |
|
| 1184 |
return pci_device_load(&opp->pci_dev, f);
|
| 1185 |
} |
| 1186 |
|
| 1187 |
static void openpic_irq_raise(openpic_t *opp, int n_CPU, IRQ_src_t *src) |
| 1188 |
{
|
| 1189 |
qemu_irq_raise(opp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]); |
| 1190 |
} |
| 1191 |
|
| 1192 |
qemu_irq *openpic_init (PCIBus *bus, int *pmem_index, int nb_cpus, |
| 1193 |
qemu_irq **irqs, qemu_irq irq_out) |
| 1194 |
{
|
| 1195 |
openpic_t *opp; |
| 1196 |
uint8_t *pci_conf; |
| 1197 |
int i, m;
|
| 1198 |
|
| 1199 |
/* XXX: for now, only one CPU is supported */
|
| 1200 |
if (nb_cpus != 1) |
| 1201 |
return NULL; |
| 1202 |
if (bus) {
|
| 1203 |
opp = (openpic_t *)pci_register_device(bus, "OpenPIC", sizeof(openpic_t), |
| 1204 |
-1, NULL, NULL); |
| 1205 |
pci_conf = opp->pci_dev.config; |
| 1206 |
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_IBM); |
| 1207 |
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_IBM_OPENPIC2); |
| 1208 |
pci_config_set_class(pci_conf, PCI_CLASS_SYSTEM_OTHER); // FIXME?
|
| 1209 |
pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
|
| 1210 |
pci_conf[0x3d] = 0x00; // no interrupt pin |
| 1211 |
|
| 1212 |
/* Register I/O spaces */
|
| 1213 |
pci_register_bar((PCIDevice *)opp, 0, 0x40000, |
| 1214 |
PCI_BASE_ADDRESS_SPACE_MEMORY, &openpic_map); |
| 1215 |
} else {
|
| 1216 |
opp = qemu_mallocz(sizeof(openpic_t));
|
| 1217 |
} |
| 1218 |
opp->mem_index = cpu_register_io_memory(openpic_read, |
| 1219 |
openpic_write, opp); |
| 1220 |
|
| 1221 |
// isu_base &= 0xFFFC0000;
|
| 1222 |
opp->nb_cpus = nb_cpus; |
| 1223 |
opp->max_irq = OPENPIC_MAX_IRQ; |
| 1224 |
opp->irq_ipi0 = OPENPIC_IRQ_IPI0; |
| 1225 |
opp->irq_tim0 = OPENPIC_IRQ_TIM0; |
| 1226 |
/* Set IRQ types */
|
| 1227 |
for (i = 0; i < OPENPIC_EXT_IRQ; i++) { |
| 1228 |
opp->src[i].type = IRQ_EXTERNAL; |
| 1229 |
} |
| 1230 |
for (; i < OPENPIC_IRQ_TIM0; i++) {
|
| 1231 |
opp->src[i].type = IRQ_SPECIAL; |
| 1232 |
} |
| 1233 |
#if MAX_IPI > 0 |
| 1234 |
m = OPENPIC_IRQ_IPI0; |
| 1235 |
#else
|
| 1236 |
m = OPENPIC_IRQ_DBL0; |
| 1237 |
#endif
|
| 1238 |
for (; i < m; i++) {
|
| 1239 |
opp->src[i].type = IRQ_TIMER; |
| 1240 |
} |
| 1241 |
for (; i < OPENPIC_MAX_IRQ; i++) {
|
| 1242 |
opp->src[i].type = IRQ_INTERNAL; |
| 1243 |
} |
| 1244 |
for (i = 0; i < nb_cpus; i++) |
| 1245 |
opp->dst[i].irqs = irqs[i]; |
| 1246 |
opp->irq_out = irq_out; |
| 1247 |
opp->need_swap = 1;
|
| 1248 |
|
| 1249 |
register_savevm("openpic", 0, 2, openpic_save, openpic_load, opp); |
| 1250 |
qemu_register_reset(openpic_reset, opp); |
| 1251 |
|
| 1252 |
opp->irq_raise = openpic_irq_raise; |
| 1253 |
opp->reset = openpic_reset; |
| 1254 |
|
| 1255 |
if (pmem_index)
|
| 1256 |
*pmem_index = opp->mem_index; |
| 1257 |
|
| 1258 |
return qemu_allocate_irqs(openpic_set_irq, opp, opp->max_irq);
|
| 1259 |
} |
| 1260 |
|
| 1261 |
static void mpic_irq_raise(openpic_t *mpp, int n_CPU, IRQ_src_t *src) |
| 1262 |
{
|
| 1263 |
int n_ci = IDR_CI0 - n_CPU;
|
| 1264 |
|
| 1265 |
if(test_bit(&src->ide, n_ci)) {
|
| 1266 |
qemu_irq_raise(mpp->dst[n_CPU].irqs[OPENPIC_OUTPUT_CINT]); |
| 1267 |
} |
| 1268 |
else {
|
| 1269 |
qemu_irq_raise(mpp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]); |
| 1270 |
} |
| 1271 |
} |
| 1272 |
|
| 1273 |
static void mpic_reset (void *opaque) |
| 1274 |
{
|
| 1275 |
openpic_t *mpp = (openpic_t *)opaque; |
| 1276 |
int i;
|
| 1277 |
|
| 1278 |
mpp->glbc = 0x80000000;
|
| 1279 |
/* Initialise controller registers */
|
| 1280 |
mpp->frep = 0x004f0002;
|
| 1281 |
mpp->veni = VENI; |
| 1282 |
mpp->pint = 0x00000000;
|
| 1283 |
mpp->spve = 0x0000FFFF;
|
| 1284 |
/* Initialise IRQ sources */
|
| 1285 |
for (i = 0; i < mpp->max_irq; i++) { |
| 1286 |
mpp->src[i].ipvp = 0x80800000;
|
| 1287 |
mpp->src[i].ide = 0x00000001;
|
| 1288 |
} |
| 1289 |
/* Initialise IRQ destinations */
|
| 1290 |
for (i = 0; i < MAX_CPU; i++) { |
| 1291 |
mpp->dst[i].pctp = 0x0000000F;
|
| 1292 |
mpp->dst[i].tfrr = 0x00000000;
|
| 1293 |
memset(&mpp->dst[i].raised, 0, sizeof(IRQ_queue_t)); |
| 1294 |
mpp->dst[i].raised.next = -1;
|
| 1295 |
memset(&mpp->dst[i].servicing, 0, sizeof(IRQ_queue_t)); |
| 1296 |
mpp->dst[i].servicing.next = -1;
|
| 1297 |
} |
| 1298 |
/* Initialise timers */
|
| 1299 |
for (i = 0; i < MAX_TMR; i++) { |
| 1300 |
mpp->timers[i].ticc = 0x00000000;
|
| 1301 |
mpp->timers[i].tibc = 0x80000000;
|
| 1302 |
} |
| 1303 |
/* Go out of RESET state */
|
| 1304 |
mpp->glbc = 0x00000000;
|
| 1305 |
} |
| 1306 |
|
| 1307 |
static void mpic_timer_write (void *opaque, target_phys_addr_t addr, uint32_t val) |
| 1308 |
{
|
| 1309 |
openpic_t *mpp = opaque; |
| 1310 |
int idx, cpu;
|
| 1311 |
|
| 1312 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1313 |
if (addr & 0xF) |
| 1314 |
return;
|
| 1315 |
addr &= 0xFFFF;
|
| 1316 |
cpu = addr >> 12;
|
| 1317 |
idx = (addr >> 6) & 0x3; |
| 1318 |
switch (addr & 0x30) { |
| 1319 |
case 0x00: /* gtccr */ |
| 1320 |
break;
|
| 1321 |
case 0x10: /* gtbcr */ |
| 1322 |
if ((mpp->timers[idx].ticc & 0x80000000) != 0 && |
| 1323 |
(val & 0x80000000) == 0 && |
| 1324 |
(mpp->timers[idx].tibc & 0x80000000) != 0) |
| 1325 |
mpp->timers[idx].ticc &= ~0x80000000;
|
| 1326 |
mpp->timers[idx].tibc = val; |
| 1327 |
break;
|
| 1328 |
case 0x20: /* GTIVPR */ |
| 1329 |
write_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IPVP, val); |
| 1330 |
break;
|
| 1331 |
case 0x30: /* GTIDR & TFRR */ |
| 1332 |
if ((addr & 0xF0) == 0xF0) |
| 1333 |
mpp->dst[cpu].tfrr = val; |
| 1334 |
else
|
| 1335 |
write_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IDE, val); |
| 1336 |
break;
|
| 1337 |
} |
| 1338 |
} |
| 1339 |
|
| 1340 |
static uint32_t mpic_timer_read (void *opaque, target_phys_addr_t addr) |
| 1341 |
{
|
| 1342 |
openpic_t *mpp = opaque; |
| 1343 |
uint32_t retval; |
| 1344 |
int idx, cpu;
|
| 1345 |
|
| 1346 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1347 |
retval = 0xFFFFFFFF;
|
| 1348 |
if (addr & 0xF) |
| 1349 |
return retval;
|
| 1350 |
addr &= 0xFFFF;
|
| 1351 |
cpu = addr >> 12;
|
| 1352 |
idx = (addr >> 6) & 0x3; |
| 1353 |
switch (addr & 0x30) { |
| 1354 |
case 0x00: /* gtccr */ |
| 1355 |
retval = mpp->timers[idx].ticc; |
| 1356 |
break;
|
| 1357 |
case 0x10: /* gtbcr */ |
| 1358 |
retval = mpp->timers[idx].tibc; |
| 1359 |
break;
|
| 1360 |
case 0x20: /* TIPV */ |
| 1361 |
retval = read_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IPVP); |
| 1362 |
break;
|
| 1363 |
case 0x30: /* TIDR */ |
| 1364 |
if ((addr &0xF0) == 0XF0) |
| 1365 |
retval = mpp->dst[cpu].tfrr; |
| 1366 |
else
|
| 1367 |
retval = read_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IDE); |
| 1368 |
break;
|
| 1369 |
} |
| 1370 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1371 |
|
| 1372 |
return retval;
|
| 1373 |
} |
| 1374 |
|
| 1375 |
static void mpic_src_ext_write (void *opaque, target_phys_addr_t addr, |
| 1376 |
uint32_t val) |
| 1377 |
{
|
| 1378 |
openpic_t *mpp = opaque; |
| 1379 |
int idx = MPIC_EXT_IRQ;
|
| 1380 |
|
| 1381 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1382 |
if (addr & 0xF) |
| 1383 |
return;
|
| 1384 |
|
| 1385 |
addr -= MPIC_EXT_REG_START & (TARGET_PAGE_SIZE - 1);
|
| 1386 |
if (addr < MPIC_EXT_REG_SIZE) {
|
| 1387 |
idx += (addr & 0xFFF0) >> 5; |
| 1388 |
if (addr & 0x10) { |
| 1389 |
/* EXDE / IFEDE / IEEDE */
|
| 1390 |
write_IRQreg(mpp, idx, IRQ_IDE, val); |
| 1391 |
} else {
|
| 1392 |
/* EXVP / IFEVP / IEEVP */
|
| 1393 |
write_IRQreg(mpp, idx, IRQ_IPVP, val); |
| 1394 |
} |
| 1395 |
} |
| 1396 |
} |
| 1397 |
|
| 1398 |
static uint32_t mpic_src_ext_read (void *opaque, target_phys_addr_t addr) |
| 1399 |
{
|
| 1400 |
openpic_t *mpp = opaque; |
| 1401 |
uint32_t retval; |
| 1402 |
int idx = MPIC_EXT_IRQ;
|
| 1403 |
|
| 1404 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1405 |
retval = 0xFFFFFFFF;
|
| 1406 |
if (addr & 0xF) |
| 1407 |
return retval;
|
| 1408 |
|
| 1409 |
addr -= MPIC_EXT_REG_START & (TARGET_PAGE_SIZE - 1);
|
| 1410 |
if (addr < MPIC_EXT_REG_SIZE) {
|
| 1411 |
idx += (addr & 0xFFF0) >> 5; |
| 1412 |
if (addr & 0x10) { |
| 1413 |
/* EXDE / IFEDE / IEEDE */
|
| 1414 |
retval = read_IRQreg(mpp, idx, IRQ_IDE); |
| 1415 |
} else {
|
| 1416 |
/* EXVP / IFEVP / IEEVP */
|
| 1417 |
retval = read_IRQreg(mpp, idx, IRQ_IPVP); |
| 1418 |
} |
| 1419 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1420 |
} |
| 1421 |
|
| 1422 |
return retval;
|
| 1423 |
} |
| 1424 |
|
| 1425 |
static void mpic_src_int_write (void *opaque, target_phys_addr_t addr, |
| 1426 |
uint32_t val) |
| 1427 |
{
|
| 1428 |
openpic_t *mpp = opaque; |
| 1429 |
int idx = MPIC_INT_IRQ;
|
| 1430 |
|
| 1431 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1432 |
if (addr & 0xF) |
| 1433 |
return;
|
| 1434 |
|
| 1435 |
addr -= MPIC_INT_REG_START & (TARGET_PAGE_SIZE - 1);
|
| 1436 |
if (addr < MPIC_INT_REG_SIZE) {
|
| 1437 |
idx += (addr & 0xFFF0) >> 5; |
| 1438 |
if (addr & 0x10) { |
| 1439 |
/* EXDE / IFEDE / IEEDE */
|
| 1440 |
write_IRQreg(mpp, idx, IRQ_IDE, val); |
| 1441 |
} else {
|
| 1442 |
/* EXVP / IFEVP / IEEVP */
|
| 1443 |
write_IRQreg(mpp, idx, IRQ_IPVP, val); |
| 1444 |
} |
| 1445 |
} |
| 1446 |
} |
| 1447 |
|
| 1448 |
static uint32_t mpic_src_int_read (void *opaque, target_phys_addr_t addr) |
| 1449 |
{
|
| 1450 |
openpic_t *mpp = opaque; |
| 1451 |
uint32_t retval; |
| 1452 |
int idx = MPIC_INT_IRQ;
|
| 1453 |
|
| 1454 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1455 |
retval = 0xFFFFFFFF;
|
| 1456 |
if (addr & 0xF) |
| 1457 |
return retval;
|
| 1458 |
|
| 1459 |
addr -= MPIC_INT_REG_START & (TARGET_PAGE_SIZE - 1);
|
| 1460 |
if (addr < MPIC_INT_REG_SIZE) {
|
| 1461 |
idx += (addr & 0xFFF0) >> 5; |
| 1462 |
if (addr & 0x10) { |
| 1463 |
/* EXDE / IFEDE / IEEDE */
|
| 1464 |
retval = read_IRQreg(mpp, idx, IRQ_IDE); |
| 1465 |
} else {
|
| 1466 |
/* EXVP / IFEVP / IEEVP */
|
| 1467 |
retval = read_IRQreg(mpp, idx, IRQ_IPVP); |
| 1468 |
} |
| 1469 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1470 |
} |
| 1471 |
|
| 1472 |
return retval;
|
| 1473 |
} |
| 1474 |
|
| 1475 |
static void mpic_src_msg_write (void *opaque, target_phys_addr_t addr, |
| 1476 |
uint32_t val) |
| 1477 |
{
|
| 1478 |
openpic_t *mpp = opaque; |
| 1479 |
int idx = MPIC_MSG_IRQ;
|
| 1480 |
|
| 1481 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1482 |
if (addr & 0xF) |
| 1483 |
return;
|
| 1484 |
|
| 1485 |
addr -= MPIC_MSG_REG_START & (TARGET_PAGE_SIZE - 1);
|
| 1486 |
if (addr < MPIC_MSG_REG_SIZE) {
|
| 1487 |
idx += (addr & 0xFFF0) >> 5; |
| 1488 |
if (addr & 0x10) { |
| 1489 |
/* EXDE / IFEDE / IEEDE */
|
| 1490 |
write_IRQreg(mpp, idx, IRQ_IDE, val); |
| 1491 |
} else {
|
| 1492 |
/* EXVP / IFEVP / IEEVP */
|
| 1493 |
write_IRQreg(mpp, idx, IRQ_IPVP, val); |
| 1494 |
} |
| 1495 |
} |
| 1496 |
} |
| 1497 |
|
| 1498 |
static uint32_t mpic_src_msg_read (void *opaque, target_phys_addr_t addr) |
| 1499 |
{
|
| 1500 |
openpic_t *mpp = opaque; |
| 1501 |
uint32_t retval; |
| 1502 |
int idx = MPIC_MSG_IRQ;
|
| 1503 |
|
| 1504 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1505 |
retval = 0xFFFFFFFF;
|
| 1506 |
if (addr & 0xF) |
| 1507 |
return retval;
|
| 1508 |
|
| 1509 |
addr -= MPIC_MSG_REG_START & (TARGET_PAGE_SIZE - 1);
|
| 1510 |
if (addr < MPIC_MSG_REG_SIZE) {
|
| 1511 |
idx += (addr & 0xFFF0) >> 5; |
| 1512 |
if (addr & 0x10) { |
| 1513 |
/* EXDE / IFEDE / IEEDE */
|
| 1514 |
retval = read_IRQreg(mpp, idx, IRQ_IDE); |
| 1515 |
} else {
|
| 1516 |
/* EXVP / IFEVP / IEEVP */
|
| 1517 |
retval = read_IRQreg(mpp, idx, IRQ_IPVP); |
| 1518 |
} |
| 1519 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1520 |
} |
| 1521 |
|
| 1522 |
return retval;
|
| 1523 |
} |
| 1524 |
|
| 1525 |
static void mpic_src_msi_write (void *opaque, target_phys_addr_t addr, |
| 1526 |
uint32_t val) |
| 1527 |
{
|
| 1528 |
openpic_t *mpp = opaque; |
| 1529 |
int idx = MPIC_MSI_IRQ;
|
| 1530 |
|
| 1531 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1532 |
if (addr & 0xF) |
| 1533 |
return;
|
| 1534 |
|
| 1535 |
addr -= MPIC_MSI_REG_START & (TARGET_PAGE_SIZE - 1);
|
| 1536 |
if (addr < MPIC_MSI_REG_SIZE) {
|
| 1537 |
idx += (addr & 0xFFF0) >> 5; |
| 1538 |
if (addr & 0x10) { |
| 1539 |
/* EXDE / IFEDE / IEEDE */
|
| 1540 |
write_IRQreg(mpp, idx, IRQ_IDE, val); |
| 1541 |
} else {
|
| 1542 |
/* EXVP / IFEVP / IEEVP */
|
| 1543 |
write_IRQreg(mpp, idx, IRQ_IPVP, val); |
| 1544 |
} |
| 1545 |
} |
| 1546 |
} |
| 1547 |
static uint32_t mpic_src_msi_read (void *opaque, target_phys_addr_t addr) |
| 1548 |
{
|
| 1549 |
openpic_t *mpp = opaque; |
| 1550 |
uint32_t retval; |
| 1551 |
int idx = MPIC_MSI_IRQ;
|
| 1552 |
|
| 1553 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1554 |
retval = 0xFFFFFFFF;
|
| 1555 |
if (addr & 0xF) |
| 1556 |
return retval;
|
| 1557 |
|
| 1558 |
addr -= MPIC_MSI_REG_START & (TARGET_PAGE_SIZE - 1);
|
| 1559 |
if (addr < MPIC_MSI_REG_SIZE) {
|
| 1560 |
idx += (addr & 0xFFF0) >> 5; |
| 1561 |
if (addr & 0x10) { |
| 1562 |
/* EXDE / IFEDE / IEEDE */
|
| 1563 |
retval = read_IRQreg(mpp, idx, IRQ_IDE); |
| 1564 |
} else {
|
| 1565 |
/* EXVP / IFEVP / IEEVP */
|
| 1566 |
retval = read_IRQreg(mpp, idx, IRQ_IPVP); |
| 1567 |
} |
| 1568 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1569 |
} |
| 1570 |
|
| 1571 |
return retval;
|
| 1572 |
} |
| 1573 |
|
| 1574 |
static CPUWriteMemoryFunc * const mpic_glb_write[] = { |
| 1575 |
&openpic_buggy_write, |
| 1576 |
&openpic_buggy_write, |
| 1577 |
&openpic_gbl_write, |
| 1578 |
}; |
| 1579 |
|
| 1580 |
static CPUReadMemoryFunc * const mpic_glb_read[] = { |
| 1581 |
&openpic_buggy_read, |
| 1582 |
&openpic_buggy_read, |
| 1583 |
&openpic_gbl_read, |
| 1584 |
}; |
| 1585 |
|
| 1586 |
static CPUWriteMemoryFunc * const mpic_tmr_write[] = { |
| 1587 |
&openpic_buggy_write, |
| 1588 |
&openpic_buggy_write, |
| 1589 |
&mpic_timer_write, |
| 1590 |
}; |
| 1591 |
|
| 1592 |
static CPUReadMemoryFunc * const mpic_tmr_read[] = { |
| 1593 |
&openpic_buggy_read, |
| 1594 |
&openpic_buggy_read, |
| 1595 |
&mpic_timer_read, |
| 1596 |
}; |
| 1597 |
|
| 1598 |
static CPUWriteMemoryFunc * const mpic_cpu_write[] = { |
| 1599 |
&openpic_buggy_write, |
| 1600 |
&openpic_buggy_write, |
| 1601 |
&openpic_cpu_write, |
| 1602 |
}; |
| 1603 |
|
| 1604 |
static CPUReadMemoryFunc * const mpic_cpu_read[] = { |
| 1605 |
&openpic_buggy_read, |
| 1606 |
&openpic_buggy_read, |
| 1607 |
&openpic_cpu_read, |
| 1608 |
}; |
| 1609 |
|
| 1610 |
static CPUWriteMemoryFunc * const mpic_ext_write[] = { |
| 1611 |
&openpic_buggy_write, |
| 1612 |
&openpic_buggy_write, |
| 1613 |
&mpic_src_ext_write, |
| 1614 |
}; |
| 1615 |
|
| 1616 |
static CPUReadMemoryFunc * const mpic_ext_read[] = { |
| 1617 |
&openpic_buggy_read, |
| 1618 |
&openpic_buggy_read, |
| 1619 |
&mpic_src_ext_read, |
| 1620 |
}; |
| 1621 |
|
| 1622 |
static CPUWriteMemoryFunc * const mpic_int_write[] = { |
| 1623 |
&openpic_buggy_write, |
| 1624 |
&openpic_buggy_write, |
| 1625 |
&mpic_src_int_write, |
| 1626 |
}; |
| 1627 |
|
| 1628 |
static CPUReadMemoryFunc * const mpic_int_read[] = { |
| 1629 |
&openpic_buggy_read, |
| 1630 |
&openpic_buggy_read, |
| 1631 |
&mpic_src_int_read, |
| 1632 |
}; |
| 1633 |
|
| 1634 |
static CPUWriteMemoryFunc * const mpic_msg_write[] = { |
| 1635 |
&openpic_buggy_write, |
| 1636 |
&openpic_buggy_write, |
| 1637 |
&mpic_src_msg_write, |
| 1638 |
}; |
| 1639 |
|
| 1640 |
static CPUReadMemoryFunc * const mpic_msg_read[] = { |
| 1641 |
&openpic_buggy_read, |
| 1642 |
&openpic_buggy_read, |
| 1643 |
&mpic_src_msg_read, |
| 1644 |
}; |
| 1645 |
static CPUWriteMemoryFunc * const mpic_msi_write[] = { |
| 1646 |
&openpic_buggy_write, |
| 1647 |
&openpic_buggy_write, |
| 1648 |
&mpic_src_msi_write, |
| 1649 |
}; |
| 1650 |
|
| 1651 |
static CPUReadMemoryFunc * const mpic_msi_read[] = { |
| 1652 |
&openpic_buggy_read, |
| 1653 |
&openpic_buggy_read, |
| 1654 |
&mpic_src_msi_read, |
| 1655 |
}; |
| 1656 |
|
| 1657 |
qemu_irq *mpic_init (target_phys_addr_t base, int nb_cpus,
|
| 1658 |
qemu_irq **irqs, qemu_irq irq_out) |
| 1659 |
{
|
| 1660 |
openpic_t *mpp; |
| 1661 |
int i;
|
| 1662 |
struct {
|
| 1663 |
CPUReadMemoryFunc * const *read;
|
| 1664 |
CPUWriteMemoryFunc * const *write;
|
| 1665 |
target_phys_addr_t start_addr; |
| 1666 |
ram_addr_t size; |
| 1667 |
} const list[] = {
|
| 1668 |
{mpic_glb_read, mpic_glb_write, MPIC_GLB_REG_START, MPIC_GLB_REG_SIZE},
|
| 1669 |
{mpic_tmr_read, mpic_tmr_write, MPIC_TMR_REG_START, MPIC_TMR_REG_SIZE},
|
| 1670 |
{mpic_ext_read, mpic_ext_write, MPIC_EXT_REG_START, MPIC_EXT_REG_SIZE},
|
| 1671 |
{mpic_int_read, mpic_int_write, MPIC_INT_REG_START, MPIC_INT_REG_SIZE},
|
| 1672 |
{mpic_msg_read, mpic_msg_write, MPIC_MSG_REG_START, MPIC_MSG_REG_SIZE},
|
| 1673 |
{mpic_msi_read, mpic_msi_write, MPIC_MSI_REG_START, MPIC_MSI_REG_SIZE},
|
| 1674 |
{mpic_cpu_read, mpic_cpu_write, MPIC_CPU_REG_START, MPIC_CPU_REG_SIZE},
|
| 1675 |
}; |
| 1676 |
|
| 1677 |
/* XXX: for now, only one CPU is supported */
|
| 1678 |
if (nb_cpus != 1) |
| 1679 |
return NULL; |
| 1680 |
|
| 1681 |
mpp = qemu_mallocz(sizeof(openpic_t));
|
| 1682 |
|
| 1683 |
for (i = 0; i < sizeof(list)/sizeof(list[0]); i++) { |
| 1684 |
int mem_index;
|
| 1685 |
|
| 1686 |
mem_index = cpu_register_io_memory(list[i].read, list[i].write, mpp); |
| 1687 |
if (mem_index < 0) { |
| 1688 |
goto free;
|
| 1689 |
} |
| 1690 |
cpu_register_physical_memory(base + list[i].start_addr, |
| 1691 |
list[i].size, mem_index); |
| 1692 |
} |
| 1693 |
|
| 1694 |
mpp->nb_cpus = nb_cpus; |
| 1695 |
mpp->max_irq = MPIC_MAX_IRQ; |
| 1696 |
mpp->irq_ipi0 = MPIC_IPI_IRQ; |
| 1697 |
mpp->irq_tim0 = MPIC_TMR_IRQ; |
| 1698 |
|
| 1699 |
for (i = 0; i < nb_cpus; i++) |
| 1700 |
mpp->dst[i].irqs = irqs[i]; |
| 1701 |
mpp->irq_out = irq_out; |
| 1702 |
mpp->need_swap = 0; /* MPIC has the same endian as target */ |
| 1703 |
|
| 1704 |
mpp->irq_raise = mpic_irq_raise; |
| 1705 |
mpp->reset = mpic_reset; |
| 1706 |
|
| 1707 |
register_savevm("mpic", 0, 2, openpic_save, openpic_load, mpp); |
| 1708 |
qemu_register_reset(mpic_reset, mpp); |
| 1709 |
|
| 1710 |
return qemu_allocate_irqs(openpic_set_irq, mpp, mpp->max_irq);
|
| 1711 |
|
| 1712 |
free:
|
| 1713 |
qemu_free(mpp); |
| 1714 |
return NULL; |
| 1715 |
} |