root / hw / openpic.c @ 3204db98
History | View | Annotate | Download (48.1 kB)
| 1 |
/*
|
|---|---|
| 2 |
* OpenPIC emulation
|
| 3 |
*
|
| 4 |
* Copyright (c) 2004 Jocelyn Mayer
|
| 5 |
* 2011 Alexander Graf
|
| 6 |
*
|
| 7 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
| 8 |
* of this software and associated documentation files (the "Software"), to deal
|
| 9 |
* in the Software without restriction, including without limitation the rights
|
| 10 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
| 11 |
* copies of the Software, and to permit persons to whom the Software is
|
| 12 |
* furnished to do so, subject to the following conditions:
|
| 13 |
*
|
| 14 |
* The above copyright notice and this permission notice shall be included in
|
| 15 |
* all copies or substantial portions of the Software.
|
| 16 |
*
|
| 17 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
| 18 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
| 19 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
| 20 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
| 21 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
| 22 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
| 23 |
* THE SOFTWARE.
|
| 24 |
*/
|
| 25 |
/*
|
| 26 |
*
|
| 27 |
* Based on OpenPic implementations:
|
| 28 |
* - Intel GW80314 I/O companion chip developer's manual
|
| 29 |
* - Motorola MPC8245 & MPC8540 user manuals.
|
| 30 |
* - Motorola MCP750 (aka Raven) programmer manual.
|
| 31 |
* - Motorola Harrier programmer manuel
|
| 32 |
*
|
| 33 |
* Serial interrupts, as implemented in Raven chipset are not supported yet.
|
| 34 |
*
|
| 35 |
*/
|
| 36 |
#include "hw.h" |
| 37 |
#include "ppc_mac.h" |
| 38 |
#include "pci.h" |
| 39 |
#include "openpic.h" |
| 40 |
|
| 41 |
//#define DEBUG_OPENPIC
|
| 42 |
|
| 43 |
#ifdef DEBUG_OPENPIC
|
| 44 |
#define DPRINTF(fmt, ...) do { printf(fmt , ## __VA_ARGS__); } while (0) |
| 45 |
#else
|
| 46 |
#define DPRINTF(fmt, ...) do { } while (0) |
| 47 |
#endif
|
| 48 |
|
| 49 |
#define USE_MPCxxx /* Intel model is broken, for now */ |
| 50 |
|
| 51 |
#if defined (USE_INTEL_GW80314)
|
| 52 |
/* Intel GW80314 I/O Companion chip */
|
| 53 |
|
| 54 |
#define MAX_CPU 4 |
| 55 |
#define MAX_IRQ 32 |
| 56 |
#define MAX_DBL 4 |
| 57 |
#define MAX_MBX 4 |
| 58 |
#define MAX_TMR 4 |
| 59 |
#define VECTOR_BITS 8 |
| 60 |
#define MAX_IPI 4 |
| 61 |
|
| 62 |
#define VID (0x00000000) |
| 63 |
|
| 64 |
#elif defined(USE_MPCxxx)
|
| 65 |
|
| 66 |
#define MAX_CPU 15 |
| 67 |
#define MAX_IRQ 128 |
| 68 |
#define MAX_DBL 0 |
| 69 |
#define MAX_MBX 0 |
| 70 |
#define MAX_TMR 4 |
| 71 |
#define VECTOR_BITS 8 |
| 72 |
#define MAX_IPI 4 |
| 73 |
#define VID 0x03 /* MPIC version ID */ |
| 74 |
#define VENI 0x00000000 /* Vendor ID */ |
| 75 |
|
| 76 |
enum {
|
| 77 |
IRQ_IPVP = 0,
|
| 78 |
IRQ_IDE, |
| 79 |
}; |
| 80 |
|
| 81 |
/* OpenPIC */
|
| 82 |
#define OPENPIC_MAX_CPU 2 |
| 83 |
#define OPENPIC_MAX_IRQ 64 |
| 84 |
#define OPENPIC_EXT_IRQ 48 |
| 85 |
#define OPENPIC_MAX_TMR MAX_TMR
|
| 86 |
#define OPENPIC_MAX_IPI MAX_IPI
|
| 87 |
|
| 88 |
/* Interrupt definitions */
|
| 89 |
#define OPENPIC_IRQ_FE (OPENPIC_EXT_IRQ) /* Internal functional IRQ */ |
| 90 |
#define OPENPIC_IRQ_ERR (OPENPIC_EXT_IRQ + 1) /* Error IRQ */ |
| 91 |
#define OPENPIC_IRQ_TIM0 (OPENPIC_EXT_IRQ + 2) /* First timer IRQ */ |
| 92 |
#if OPENPIC_MAX_IPI > 0 |
| 93 |
#define OPENPIC_IRQ_IPI0 (OPENPIC_IRQ_TIM0 + OPENPIC_MAX_TMR) /* First IPI IRQ */ |
| 94 |
#define OPENPIC_IRQ_DBL0 (OPENPIC_IRQ_IPI0 + (OPENPIC_MAX_CPU * OPENPIC_MAX_IPI)) /* First doorbell IRQ */ |
| 95 |
#else
|
| 96 |
#define OPENPIC_IRQ_DBL0 (OPENPIC_IRQ_TIM0 + OPENPIC_MAX_TMR) /* First doorbell IRQ */ |
| 97 |
#define OPENPIC_IRQ_MBX0 (OPENPIC_IRQ_DBL0 + OPENPIC_MAX_DBL) /* First mailbox IRQ */ |
| 98 |
#endif
|
| 99 |
|
| 100 |
/* MPIC */
|
| 101 |
#define MPIC_MAX_CPU 1 |
| 102 |
#define MPIC_MAX_EXT 12 |
| 103 |
#define MPIC_MAX_INT 64 |
| 104 |
#define MPIC_MAX_MSG 4 |
| 105 |
#define MPIC_MAX_MSI 8 |
| 106 |
#define MPIC_MAX_TMR MAX_TMR
|
| 107 |
#define MPIC_MAX_IPI MAX_IPI
|
| 108 |
#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))
|
| 109 |
|
| 110 |
/* Interrupt definitions */
|
| 111 |
#define MPIC_EXT_IRQ 0 |
| 112 |
#define MPIC_INT_IRQ (MPIC_EXT_IRQ + MPIC_MAX_EXT)
|
| 113 |
#define MPIC_TMR_IRQ (MPIC_INT_IRQ + MPIC_MAX_INT)
|
| 114 |
#define MPIC_MSG_IRQ (MPIC_TMR_IRQ + MPIC_MAX_TMR)
|
| 115 |
#define MPIC_MSI_IRQ (MPIC_MSG_IRQ + MPIC_MAX_MSG)
|
| 116 |
#define MPIC_IPI_IRQ (MPIC_MSI_IRQ + MPIC_MAX_MSI)
|
| 117 |
|
| 118 |
#define MPIC_GLB_REG_START 0x0 |
| 119 |
#define MPIC_GLB_REG_SIZE 0x10F0 |
| 120 |
#define MPIC_TMR_REG_START 0x10F0 |
| 121 |
#define MPIC_TMR_REG_SIZE 0x220 |
| 122 |
#define MPIC_EXT_REG_START 0x10000 |
| 123 |
#define MPIC_EXT_REG_SIZE 0x180 |
| 124 |
#define MPIC_INT_REG_START 0x10200 |
| 125 |
#define MPIC_INT_REG_SIZE 0x800 |
| 126 |
#define MPIC_MSG_REG_START 0x11600 |
| 127 |
#define MPIC_MSG_REG_SIZE 0x100 |
| 128 |
#define MPIC_MSI_REG_START 0x11C00 |
| 129 |
#define MPIC_MSI_REG_SIZE 0x100 |
| 130 |
#define MPIC_CPU_REG_START 0x20000 |
| 131 |
#define MPIC_CPU_REG_SIZE 0x100 + ((MAX_CPU - 1) * 0x1000) |
| 132 |
|
| 133 |
enum mpic_ide_bits {
|
| 134 |
IDR_EP = 31,
|
| 135 |
IDR_CI0 = 30,
|
| 136 |
IDR_CI1 = 29,
|
| 137 |
IDR_P1 = 1,
|
| 138 |
IDR_P0 = 0,
|
| 139 |
}; |
| 140 |
|
| 141 |
#else
|
| 142 |
#error "Please select which OpenPic implementation is to be emulated" |
| 143 |
#endif
|
| 144 |
|
| 145 |
#define OPENPIC_PAGE_SIZE 4096 |
| 146 |
|
| 147 |
#define BF_WIDTH(_bits_) \
|
| 148 |
(((_bits_) + (sizeof(uint32_t) * 8) - 1) / (sizeof(uint32_t) * 8)) |
| 149 |
|
| 150 |
static inline void set_bit (uint32_t *field, int bit) |
| 151 |
{
|
| 152 |
field[bit >> 5] |= 1 << (bit & 0x1F); |
| 153 |
} |
| 154 |
|
| 155 |
static inline void reset_bit (uint32_t *field, int bit) |
| 156 |
{
|
| 157 |
field[bit >> 5] &= ~(1 << (bit & 0x1F)); |
| 158 |
} |
| 159 |
|
| 160 |
static inline int test_bit (uint32_t *field, int bit) |
| 161 |
{
|
| 162 |
return (field[bit >> 5] & 1 << (bit & 0x1F)) != 0; |
| 163 |
} |
| 164 |
|
| 165 |
static int get_current_cpu(void) |
| 166 |
{
|
| 167 |
return cpu_single_env->cpu_index;
|
| 168 |
} |
| 169 |
|
| 170 |
static uint32_t openpic_cpu_read_internal(void *opaque, target_phys_addr_t addr, |
| 171 |
int idx);
|
| 172 |
static void openpic_cpu_write_internal(void *opaque, target_phys_addr_t addr, |
| 173 |
uint32_t val, int idx);
|
| 174 |
|
| 175 |
enum {
|
| 176 |
IRQ_EXTERNAL = 0x01,
|
| 177 |
IRQ_INTERNAL = 0x02,
|
| 178 |
IRQ_TIMER = 0x04,
|
| 179 |
IRQ_SPECIAL = 0x08,
|
| 180 |
}; |
| 181 |
|
| 182 |
typedef struct IRQ_queue_t { |
| 183 |
uint32_t queue[BF_WIDTH(MAX_IRQ)]; |
| 184 |
int next;
|
| 185 |
int priority;
|
| 186 |
} IRQ_queue_t; |
| 187 |
|
| 188 |
typedef struct IRQ_src_t { |
| 189 |
uint32_t ipvp; /* IRQ vector/priority register */
|
| 190 |
uint32_t ide; /* IRQ destination register */
|
| 191 |
int type;
|
| 192 |
int last_cpu;
|
| 193 |
int pending; /* TRUE if IRQ is pending */ |
| 194 |
} IRQ_src_t; |
| 195 |
|
| 196 |
enum IPVP_bits {
|
| 197 |
IPVP_MASK = 31,
|
| 198 |
IPVP_ACTIVITY = 30,
|
| 199 |
IPVP_MODE = 29,
|
| 200 |
IPVP_POLARITY = 23,
|
| 201 |
IPVP_SENSE = 22,
|
| 202 |
}; |
| 203 |
#define IPVP_PRIORITY_MASK (0x1F << 16) |
| 204 |
#define IPVP_PRIORITY(_ipvpr_) ((int)(((_ipvpr_) & IPVP_PRIORITY_MASK) >> 16)) |
| 205 |
#define IPVP_VECTOR_MASK ((1 << VECTOR_BITS) - 1) |
| 206 |
#define IPVP_VECTOR(_ipvpr_) ((_ipvpr_) & IPVP_VECTOR_MASK)
|
| 207 |
|
| 208 |
typedef struct IRQ_dst_t { |
| 209 |
uint32_t tfrr; |
| 210 |
uint32_t pctp; /* CPU current task priority */
|
| 211 |
uint32_t pcsr; /* CPU sensitivity register */
|
| 212 |
IRQ_queue_t raised; |
| 213 |
IRQ_queue_t servicing; |
| 214 |
qemu_irq *irqs; |
| 215 |
} IRQ_dst_t; |
| 216 |
|
| 217 |
typedef struct openpic_t { |
| 218 |
PCIDevice pci_dev; |
| 219 |
MemoryRegion mem; |
| 220 |
|
| 221 |
/* Sub-regions */
|
| 222 |
MemoryRegion sub_io_mem[7];
|
| 223 |
|
| 224 |
/* Global registers */
|
| 225 |
uint32_t frep; /* Feature reporting register */
|
| 226 |
uint32_t glbc; /* Global configuration register */
|
| 227 |
uint32_t micr; /* MPIC interrupt configuration register */
|
| 228 |
uint32_t veni; /* Vendor identification register */
|
| 229 |
uint32_t pint; /* Processor initialization register */
|
| 230 |
uint32_t spve; /* Spurious vector register */
|
| 231 |
uint32_t tifr; /* Timer frequency reporting register */
|
| 232 |
/* Source registers */
|
| 233 |
IRQ_src_t src[MAX_IRQ]; |
| 234 |
/* Local registers per output pin */
|
| 235 |
IRQ_dst_t dst[MAX_CPU]; |
| 236 |
int nb_cpus;
|
| 237 |
/* Timer registers */
|
| 238 |
struct {
|
| 239 |
uint32_t ticc; /* Global timer current count register */
|
| 240 |
uint32_t tibc; /* Global timer base count register */
|
| 241 |
} timers[MAX_TMR]; |
| 242 |
#if MAX_DBL > 0 |
| 243 |
/* Doorbell registers */
|
| 244 |
uint32_t dar; /* Doorbell activate register */
|
| 245 |
struct {
|
| 246 |
uint32_t dmr; /* Doorbell messaging register */
|
| 247 |
} doorbells[MAX_DBL]; |
| 248 |
#endif
|
| 249 |
#if MAX_MBX > 0 |
| 250 |
/* Mailbox registers */
|
| 251 |
struct {
|
| 252 |
uint32_t mbr; /* Mailbox register */
|
| 253 |
} mailboxes[MAX_MAILBOXES]; |
| 254 |
#endif
|
| 255 |
/* IRQ out is used when in bypass mode (not implemented) */
|
| 256 |
qemu_irq irq_out; |
| 257 |
int max_irq;
|
| 258 |
int irq_ipi0;
|
| 259 |
int irq_tim0;
|
| 260 |
void (*reset) (void *); |
| 261 |
void (*irq_raise) (struct openpic_t *, int, IRQ_src_t *); |
| 262 |
} openpic_t; |
| 263 |
|
| 264 |
static inline void IRQ_setbit (IRQ_queue_t *q, int n_IRQ) |
| 265 |
{
|
| 266 |
set_bit(q->queue, n_IRQ); |
| 267 |
} |
| 268 |
|
| 269 |
static inline void IRQ_resetbit (IRQ_queue_t *q, int n_IRQ) |
| 270 |
{
|
| 271 |
reset_bit(q->queue, n_IRQ); |
| 272 |
} |
| 273 |
|
| 274 |
static inline int IRQ_testbit (IRQ_queue_t *q, int n_IRQ) |
| 275 |
{
|
| 276 |
return test_bit(q->queue, n_IRQ);
|
| 277 |
} |
| 278 |
|
| 279 |
static void IRQ_check (openpic_t *opp, IRQ_queue_t *q) |
| 280 |
{
|
| 281 |
int next, i;
|
| 282 |
int priority;
|
| 283 |
|
| 284 |
next = -1;
|
| 285 |
priority = -1;
|
| 286 |
for (i = 0; i < opp->max_irq; i++) { |
| 287 |
if (IRQ_testbit(q, i)) {
|
| 288 |
DPRINTF("IRQ_check: irq %d set ipvp_pr=%d pr=%d\n",
|
| 289 |
i, IPVP_PRIORITY(opp->src[i].ipvp), priority); |
| 290 |
if (IPVP_PRIORITY(opp->src[i].ipvp) > priority) {
|
| 291 |
next = i; |
| 292 |
priority = IPVP_PRIORITY(opp->src[i].ipvp); |
| 293 |
} |
| 294 |
} |
| 295 |
} |
| 296 |
q->next = next; |
| 297 |
q->priority = priority; |
| 298 |
} |
| 299 |
|
| 300 |
static int IRQ_get_next (openpic_t *opp, IRQ_queue_t *q) |
| 301 |
{
|
| 302 |
if (q->next == -1) { |
| 303 |
/* XXX: optimize */
|
| 304 |
IRQ_check(opp, q); |
| 305 |
} |
| 306 |
|
| 307 |
return q->next;
|
| 308 |
} |
| 309 |
|
| 310 |
static void IRQ_local_pipe (openpic_t *opp, int n_CPU, int n_IRQ) |
| 311 |
{
|
| 312 |
IRQ_dst_t *dst; |
| 313 |
IRQ_src_t *src; |
| 314 |
int priority;
|
| 315 |
|
| 316 |
dst = &opp->dst[n_CPU]; |
| 317 |
src = &opp->src[n_IRQ]; |
| 318 |
priority = IPVP_PRIORITY(src->ipvp); |
| 319 |
if (priority <= dst->pctp) {
|
| 320 |
/* Too low priority */
|
| 321 |
DPRINTF("%s: IRQ %d has too low priority on CPU %d\n",
|
| 322 |
__func__, n_IRQ, n_CPU); |
| 323 |
return;
|
| 324 |
} |
| 325 |
if (IRQ_testbit(&dst->raised, n_IRQ)) {
|
| 326 |
/* Interrupt miss */
|
| 327 |
DPRINTF("%s: IRQ %d was missed on CPU %d\n",
|
| 328 |
__func__, n_IRQ, n_CPU); |
| 329 |
return;
|
| 330 |
} |
| 331 |
set_bit(&src->ipvp, IPVP_ACTIVITY); |
| 332 |
IRQ_setbit(&dst->raised, n_IRQ); |
| 333 |
if (priority < dst->raised.priority) {
|
| 334 |
/* An higher priority IRQ is already raised */
|
| 335 |
DPRINTF("%s: IRQ %d is hidden by raised IRQ %d on CPU %d\n",
|
| 336 |
__func__, n_IRQ, dst->raised.next, n_CPU); |
| 337 |
return;
|
| 338 |
} |
| 339 |
IRQ_get_next(opp, &dst->raised); |
| 340 |
if (IRQ_get_next(opp, &dst->servicing) != -1 && |
| 341 |
priority <= dst->servicing.priority) {
|
| 342 |
DPRINTF("%s: IRQ %d is hidden by servicing IRQ %d on CPU %d\n",
|
| 343 |
__func__, n_IRQ, dst->servicing.next, n_CPU); |
| 344 |
/* Already servicing a higher priority IRQ */
|
| 345 |
return;
|
| 346 |
} |
| 347 |
DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n", n_CPU, n_IRQ);
|
| 348 |
opp->irq_raise(opp, n_CPU, src); |
| 349 |
} |
| 350 |
|
| 351 |
/* update pic state because registers for n_IRQ have changed value */
|
| 352 |
static void openpic_update_irq(openpic_t *opp, int n_IRQ) |
| 353 |
{
|
| 354 |
IRQ_src_t *src; |
| 355 |
int i;
|
| 356 |
|
| 357 |
src = &opp->src[n_IRQ]; |
| 358 |
|
| 359 |
if (!src->pending) {
|
| 360 |
/* no irq pending */
|
| 361 |
DPRINTF("%s: IRQ %d is not pending\n", __func__, n_IRQ);
|
| 362 |
return;
|
| 363 |
} |
| 364 |
if (test_bit(&src->ipvp, IPVP_MASK)) {
|
| 365 |
/* Interrupt source is disabled */
|
| 366 |
DPRINTF("%s: IRQ %d is disabled\n", __func__, n_IRQ);
|
| 367 |
return;
|
| 368 |
} |
| 369 |
if (IPVP_PRIORITY(src->ipvp) == 0) { |
| 370 |
/* Priority set to zero */
|
| 371 |
DPRINTF("%s: IRQ %d has 0 priority\n", __func__, n_IRQ);
|
| 372 |
return;
|
| 373 |
} |
| 374 |
if (test_bit(&src->ipvp, IPVP_ACTIVITY)) {
|
| 375 |
/* IRQ already active */
|
| 376 |
DPRINTF("%s: IRQ %d is already active\n", __func__, n_IRQ);
|
| 377 |
return;
|
| 378 |
} |
| 379 |
if (src->ide == 0x00000000) { |
| 380 |
/* No target */
|
| 381 |
DPRINTF("%s: IRQ %d has no target\n", __func__, n_IRQ);
|
| 382 |
return;
|
| 383 |
} |
| 384 |
|
| 385 |
if (src->ide == (1 << src->last_cpu)) { |
| 386 |
/* Only one CPU is allowed to receive this IRQ */
|
| 387 |
IRQ_local_pipe(opp, src->last_cpu, n_IRQ); |
| 388 |
} else if (!test_bit(&src->ipvp, IPVP_MODE)) { |
| 389 |
/* Directed delivery mode */
|
| 390 |
for (i = 0; i < opp->nb_cpus; i++) { |
| 391 |
if (test_bit(&src->ide, i))
|
| 392 |
IRQ_local_pipe(opp, i, n_IRQ); |
| 393 |
} |
| 394 |
} else {
|
| 395 |
/* Distributed delivery mode */
|
| 396 |
for (i = src->last_cpu + 1; i != src->last_cpu; i++) { |
| 397 |
if (i == opp->nb_cpus)
|
| 398 |
i = 0;
|
| 399 |
if (test_bit(&src->ide, i)) {
|
| 400 |
IRQ_local_pipe(opp, i, n_IRQ); |
| 401 |
src->last_cpu = i; |
| 402 |
break;
|
| 403 |
} |
| 404 |
} |
| 405 |
} |
| 406 |
} |
| 407 |
|
| 408 |
static void openpic_set_irq(void *opaque, int n_IRQ, int level) |
| 409 |
{
|
| 410 |
openpic_t *opp = opaque; |
| 411 |
IRQ_src_t *src; |
| 412 |
|
| 413 |
src = &opp->src[n_IRQ]; |
| 414 |
DPRINTF("openpic: set irq %d = %d ipvp=%08x\n",
|
| 415 |
n_IRQ, level, src->ipvp); |
| 416 |
if (test_bit(&src->ipvp, IPVP_SENSE)) {
|
| 417 |
/* level-sensitive irq */
|
| 418 |
src->pending = level; |
| 419 |
if (!level)
|
| 420 |
reset_bit(&src->ipvp, IPVP_ACTIVITY); |
| 421 |
} else {
|
| 422 |
/* edge-sensitive irq */
|
| 423 |
if (level)
|
| 424 |
src->pending = 1;
|
| 425 |
} |
| 426 |
openpic_update_irq(opp, n_IRQ); |
| 427 |
} |
| 428 |
|
| 429 |
static void openpic_reset (void *opaque) |
| 430 |
{
|
| 431 |
openpic_t *opp = (openpic_t *)opaque; |
| 432 |
int i;
|
| 433 |
|
| 434 |
opp->glbc = 0x80000000;
|
| 435 |
/* Initialise controller registers */
|
| 436 |
opp->frep = ((OPENPIC_EXT_IRQ - 1) << 16) | ((MAX_CPU - 1) << 8) | VID; |
| 437 |
opp->veni = VENI; |
| 438 |
opp->pint = 0x00000000;
|
| 439 |
opp->spve = 0x000000FF;
|
| 440 |
opp->tifr = 0x003F7A00;
|
| 441 |
/* ? */
|
| 442 |
opp->micr = 0x00000000;
|
| 443 |
/* Initialise IRQ sources */
|
| 444 |
for (i = 0; i < opp->max_irq; i++) { |
| 445 |
opp->src[i].ipvp = 0xA0000000;
|
| 446 |
opp->src[i].ide = 0x00000000;
|
| 447 |
} |
| 448 |
/* Initialise IRQ destinations */
|
| 449 |
for (i = 0; i < MAX_CPU; i++) { |
| 450 |
opp->dst[i].pctp = 0x0000000F;
|
| 451 |
opp->dst[i].pcsr = 0x00000000;
|
| 452 |
memset(&opp->dst[i].raised, 0, sizeof(IRQ_queue_t)); |
| 453 |
opp->dst[i].raised.next = -1;
|
| 454 |
memset(&opp->dst[i].servicing, 0, sizeof(IRQ_queue_t)); |
| 455 |
opp->dst[i].servicing.next = -1;
|
| 456 |
} |
| 457 |
/* Initialise timers */
|
| 458 |
for (i = 0; i < MAX_TMR; i++) { |
| 459 |
opp->timers[i].ticc = 0x00000000;
|
| 460 |
opp->timers[i].tibc = 0x80000000;
|
| 461 |
} |
| 462 |
/* Initialise doorbells */
|
| 463 |
#if MAX_DBL > 0 |
| 464 |
opp->dar = 0x00000000;
|
| 465 |
for (i = 0; i < MAX_DBL; i++) { |
| 466 |
opp->doorbells[i].dmr = 0x00000000;
|
| 467 |
} |
| 468 |
#endif
|
| 469 |
/* Initialise mailboxes */
|
| 470 |
#if MAX_MBX > 0 |
| 471 |
for (i = 0; i < MAX_MBX; i++) { /* ? */ |
| 472 |
opp->mailboxes[i].mbr = 0x00000000;
|
| 473 |
} |
| 474 |
#endif
|
| 475 |
/* Go out of RESET state */
|
| 476 |
opp->glbc = 0x00000000;
|
| 477 |
} |
| 478 |
|
| 479 |
static inline uint32_t read_IRQreg_ide(openpic_t *opp, int n_IRQ) |
| 480 |
{
|
| 481 |
return opp->src[n_IRQ].ide;
|
| 482 |
} |
| 483 |
|
| 484 |
static inline uint32_t read_IRQreg_ipvp(openpic_t *opp, int n_IRQ) |
| 485 |
{
|
| 486 |
return opp->src[n_IRQ].ipvp;
|
| 487 |
} |
| 488 |
|
| 489 |
static inline void write_IRQreg_ide(openpic_t *opp, int n_IRQ, uint32_t val) |
| 490 |
{
|
| 491 |
uint32_t tmp; |
| 492 |
|
| 493 |
tmp = val & 0xC0000000;
|
| 494 |
tmp |= val & ((1ULL << MAX_CPU) - 1); |
| 495 |
opp->src[n_IRQ].ide = tmp; |
| 496 |
DPRINTF("Set IDE %d to 0x%08x\n", n_IRQ, opp->src[n_IRQ].ide);
|
| 497 |
} |
| 498 |
|
| 499 |
static inline void write_IRQreg_ipvp(openpic_t *opp, int n_IRQ, uint32_t val) |
| 500 |
{
|
| 501 |
/* NOTE: not fully accurate for special IRQs, but simple and sufficient */
|
| 502 |
/* ACTIVITY bit is read-only */
|
| 503 |
opp->src[n_IRQ].ipvp = (opp->src[n_IRQ].ipvp & 0x40000000)
|
| 504 |
| (val & 0x800F00FF);
|
| 505 |
openpic_update_irq(opp, n_IRQ); |
| 506 |
DPRINTF("Set IPVP %d to 0x%08x -> 0x%08x\n", n_IRQ, val,
|
| 507 |
opp->src[n_IRQ].ipvp); |
| 508 |
} |
| 509 |
|
| 510 |
#if 0 // Code provision for Intel model
|
| 511 |
#if MAX_DBL > 0
|
| 512 |
static uint32_t read_doorbell_register (openpic_t *opp,
|
| 513 |
int n_dbl, uint32_t offset)
|
| 514 |
{
|
| 515 |
uint32_t retval;
|
| 516 |
|
| 517 |
switch (offset) {
|
| 518 |
case DBL_IPVP_OFFSET:
|
| 519 |
retval = read_IRQreg_ipvp(opp, IRQ_DBL0 + n_dbl);
|
| 520 |
break;
|
| 521 |
case DBL_IDE_OFFSET:
|
| 522 |
retval = read_IRQreg_ide(opp, IRQ_DBL0 + n_dbl);
|
| 523 |
break;
|
| 524 |
case DBL_DMR_OFFSET:
|
| 525 |
retval = opp->doorbells[n_dbl].dmr;
|
| 526 |
break;
|
| 527 |
}
|
| 528 |
|
| 529 |
return retval;
|
| 530 |
}
|
| 531 |
|
| 532 |
static void write_doorbell_register (penpic_t *opp, int n_dbl,
|
| 533 |
uint32_t offset, uint32_t value)
|
| 534 |
{
|
| 535 |
switch (offset) {
|
| 536 |
case DBL_IVPR_OFFSET:
|
| 537 |
write_IRQreg_ipvp(opp, IRQ_DBL0 + n_dbl, value);
|
| 538 |
break;
|
| 539 |
case DBL_IDE_OFFSET:
|
| 540 |
write_IRQreg_ide(opp, IRQ_DBL0 + n_dbl, value);
|
| 541 |
break;
|
| 542 |
case DBL_DMR_OFFSET:
|
| 543 |
opp->doorbells[n_dbl].dmr = value;
|
| 544 |
break;
|
| 545 |
}
|
| 546 |
}
|
| 547 |
#endif
|
| 548 |
|
| 549 |
#if MAX_MBX > 0 |
| 550 |
static uint32_t read_mailbox_register (openpic_t *opp,
|
| 551 |
int n_mbx, uint32_t offset)
|
| 552 |
{
|
| 553 |
uint32_t retval; |
| 554 |
|
| 555 |
switch (offset) {
|
| 556 |
case MBX_MBR_OFFSET:
|
| 557 |
retval = opp->mailboxes[n_mbx].mbr; |
| 558 |
break;
|
| 559 |
case MBX_IVPR_OFFSET:
|
| 560 |
retval = read_IRQreg_ipvp(opp, IRQ_MBX0 + n_mbx); |
| 561 |
break;
|
| 562 |
case MBX_DMR_OFFSET:
|
| 563 |
retval = read_IRQreg_ide(opp, IRQ_MBX0 + n_mbx); |
| 564 |
break;
|
| 565 |
} |
| 566 |
|
| 567 |
return retval;
|
| 568 |
} |
| 569 |
|
| 570 |
static void write_mailbox_register (openpic_t *opp, int n_mbx, |
| 571 |
uint32_t address, uint32_t value) |
| 572 |
{
|
| 573 |
switch (offset) {
|
| 574 |
case MBX_MBR_OFFSET:
|
| 575 |
opp->mailboxes[n_mbx].mbr = value; |
| 576 |
break;
|
| 577 |
case MBX_IVPR_OFFSET:
|
| 578 |
write_IRQreg_ipvp(opp, IRQ_MBX0 + n_mbx, value); |
| 579 |
break;
|
| 580 |
case MBX_DMR_OFFSET:
|
| 581 |
write_IRQreg_ide(opp, IRQ_MBX0 + n_mbx, value); |
| 582 |
break;
|
| 583 |
} |
| 584 |
} |
| 585 |
#endif
|
| 586 |
#endif /* 0 : Code provision for Intel model */ |
| 587 |
|
| 588 |
static void openpic_gbl_write (void *opaque, target_phys_addr_t addr, uint32_t val) |
| 589 |
{
|
| 590 |
openpic_t *opp = opaque; |
| 591 |
IRQ_dst_t *dst; |
| 592 |
int idx;
|
| 593 |
|
| 594 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 595 |
if (addr & 0xF) |
| 596 |
return;
|
| 597 |
switch (addr) {
|
| 598 |
case 0x40: |
| 599 |
case 0x50: |
| 600 |
case 0x60: |
| 601 |
case 0x70: |
| 602 |
case 0x80: |
| 603 |
case 0x90: |
| 604 |
case 0xA0: |
| 605 |
case 0xB0: |
| 606 |
openpic_cpu_write_internal(opp, addr, val, get_current_cpu()); |
| 607 |
break;
|
| 608 |
case 0x1000: /* FREP */ |
| 609 |
break;
|
| 610 |
case 0x1020: /* GLBC */ |
| 611 |
if (val & 0x80000000 && opp->reset) |
| 612 |
opp->reset(opp); |
| 613 |
opp->glbc = val & ~0x80000000;
|
| 614 |
break;
|
| 615 |
case 0x1080: /* VENI */ |
| 616 |
break;
|
| 617 |
case 0x1090: /* PINT */ |
| 618 |
for (idx = 0; idx < opp->nb_cpus; idx++) { |
| 619 |
if ((val & (1 << idx)) && !(opp->pint & (1 << idx))) { |
| 620 |
DPRINTF("Raise OpenPIC RESET output for CPU %d\n", idx);
|
| 621 |
dst = &opp->dst[idx]; |
| 622 |
qemu_irq_raise(dst->irqs[OPENPIC_OUTPUT_RESET]); |
| 623 |
} else if (!(val & (1 << idx)) && (opp->pint & (1 << idx))) { |
| 624 |
DPRINTF("Lower OpenPIC RESET output for CPU %d\n", idx);
|
| 625 |
dst = &opp->dst[idx]; |
| 626 |
qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_RESET]); |
| 627 |
} |
| 628 |
} |
| 629 |
opp->pint = val; |
| 630 |
break;
|
| 631 |
case 0x10A0: /* IPI_IPVP */ |
| 632 |
case 0x10B0: |
| 633 |
case 0x10C0: |
| 634 |
case 0x10D0: |
| 635 |
{
|
| 636 |
int idx;
|
| 637 |
idx = (addr - 0x10A0) >> 4; |
| 638 |
write_IRQreg_ipvp(opp, opp->irq_ipi0 + idx, val); |
| 639 |
} |
| 640 |
break;
|
| 641 |
case 0x10E0: /* SPVE */ |
| 642 |
opp->spve = val & 0x000000FF;
|
| 643 |
break;
|
| 644 |
case 0x10F0: /* TIFR */ |
| 645 |
opp->tifr = val; |
| 646 |
break;
|
| 647 |
default:
|
| 648 |
break;
|
| 649 |
} |
| 650 |
} |
| 651 |
|
| 652 |
static uint32_t openpic_gbl_read (void *opaque, target_phys_addr_t addr) |
| 653 |
{
|
| 654 |
openpic_t *opp = opaque; |
| 655 |
uint32_t retval; |
| 656 |
|
| 657 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 658 |
retval = 0xFFFFFFFF;
|
| 659 |
if (addr & 0xF) |
| 660 |
return retval;
|
| 661 |
switch (addr) {
|
| 662 |
case 0x1000: /* FREP */ |
| 663 |
retval = opp->frep; |
| 664 |
break;
|
| 665 |
case 0x1020: /* GLBC */ |
| 666 |
retval = opp->glbc; |
| 667 |
break;
|
| 668 |
case 0x1080: /* VENI */ |
| 669 |
retval = opp->veni; |
| 670 |
break;
|
| 671 |
case 0x1090: /* PINT */ |
| 672 |
retval = 0x00000000;
|
| 673 |
break;
|
| 674 |
case 0x40: |
| 675 |
case 0x50: |
| 676 |
case 0x60: |
| 677 |
case 0x70: |
| 678 |
case 0x80: |
| 679 |
case 0x90: |
| 680 |
case 0xA0: |
| 681 |
case 0xB0: |
| 682 |
retval = openpic_cpu_read_internal(opp, addr, get_current_cpu()); |
| 683 |
break;
|
| 684 |
case 0x10A0: /* IPI_IPVP */ |
| 685 |
case 0x10B0: |
| 686 |
case 0x10C0: |
| 687 |
case 0x10D0: |
| 688 |
{
|
| 689 |
int idx;
|
| 690 |
idx = (addr - 0x10A0) >> 4; |
| 691 |
retval = read_IRQreg_ipvp(opp, opp->irq_ipi0 + idx); |
| 692 |
} |
| 693 |
break;
|
| 694 |
case 0x10E0: /* SPVE */ |
| 695 |
retval = opp->spve; |
| 696 |
break;
|
| 697 |
case 0x10F0: /* TIFR */ |
| 698 |
retval = opp->tifr; |
| 699 |
break;
|
| 700 |
default:
|
| 701 |
break;
|
| 702 |
} |
| 703 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 704 |
|
| 705 |
return retval;
|
| 706 |
} |
| 707 |
|
| 708 |
static void openpic_timer_write (void *opaque, uint32_t addr, uint32_t val) |
| 709 |
{
|
| 710 |
openpic_t *opp = opaque; |
| 711 |
int idx;
|
| 712 |
|
| 713 |
DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
|
| 714 |
if (addr & 0xF) |
| 715 |
return;
|
| 716 |
addr -= 0x1100;
|
| 717 |
addr &= 0xFFFF;
|
| 718 |
idx = (addr & 0xFFF0) >> 6; |
| 719 |
addr = addr & 0x30;
|
| 720 |
switch (addr) {
|
| 721 |
case 0x00: /* TICC */ |
| 722 |
break;
|
| 723 |
case 0x10: /* TIBC */ |
| 724 |
if ((opp->timers[idx].ticc & 0x80000000) != 0 && |
| 725 |
(val & 0x80000000) == 0 && |
| 726 |
(opp->timers[idx].tibc & 0x80000000) != 0) |
| 727 |
opp->timers[idx].ticc &= ~0x80000000;
|
| 728 |
opp->timers[idx].tibc = val; |
| 729 |
break;
|
| 730 |
case 0x20: /* TIVP */ |
| 731 |
write_IRQreg_ipvp(opp, opp->irq_tim0 + idx, val); |
| 732 |
break;
|
| 733 |
case 0x30: /* TIDE */ |
| 734 |
write_IRQreg_ide(opp, opp->irq_tim0 + idx, val); |
| 735 |
break;
|
| 736 |
} |
| 737 |
} |
| 738 |
|
| 739 |
static uint32_t openpic_timer_read (void *opaque, uint32_t addr) |
| 740 |
{
|
| 741 |
openpic_t *opp = opaque; |
| 742 |
uint32_t retval; |
| 743 |
int idx;
|
| 744 |
|
| 745 |
DPRINTF("%s: addr %08x\n", __func__, addr);
|
| 746 |
retval = 0xFFFFFFFF;
|
| 747 |
if (addr & 0xF) |
| 748 |
return retval;
|
| 749 |
addr -= 0x1100;
|
| 750 |
addr &= 0xFFFF;
|
| 751 |
idx = (addr & 0xFFF0) >> 6; |
| 752 |
addr = addr & 0x30;
|
| 753 |
switch (addr) {
|
| 754 |
case 0x00: /* TICC */ |
| 755 |
retval = opp->timers[idx].ticc; |
| 756 |
break;
|
| 757 |
case 0x10: /* TIBC */ |
| 758 |
retval = opp->timers[idx].tibc; |
| 759 |
break;
|
| 760 |
case 0x20: /* TIPV */ |
| 761 |
retval = read_IRQreg_ipvp(opp, opp->irq_tim0 + idx); |
| 762 |
break;
|
| 763 |
case 0x30: /* TIDE */ |
| 764 |
retval = read_IRQreg_ide(opp, opp->irq_tim0 + idx); |
| 765 |
break;
|
| 766 |
} |
| 767 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 768 |
|
| 769 |
return retval;
|
| 770 |
} |
| 771 |
|
| 772 |
static void openpic_src_write (void *opaque, uint32_t addr, uint32_t val) |
| 773 |
{
|
| 774 |
openpic_t *opp = opaque; |
| 775 |
int idx;
|
| 776 |
|
| 777 |
DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
|
| 778 |
if (addr & 0xF) |
| 779 |
return;
|
| 780 |
addr = addr & 0xFFF0;
|
| 781 |
idx = addr >> 5;
|
| 782 |
if (addr & 0x10) { |
| 783 |
/* EXDE / IFEDE / IEEDE */
|
| 784 |
write_IRQreg_ide(opp, idx, val); |
| 785 |
} else {
|
| 786 |
/* EXVP / IFEVP / IEEVP */
|
| 787 |
write_IRQreg_ipvp(opp, idx, val); |
| 788 |
} |
| 789 |
} |
| 790 |
|
| 791 |
static uint32_t openpic_src_read (void *opaque, uint32_t addr) |
| 792 |
{
|
| 793 |
openpic_t *opp = opaque; |
| 794 |
uint32_t retval; |
| 795 |
int idx;
|
| 796 |
|
| 797 |
DPRINTF("%s: addr %08x\n", __func__, addr);
|
| 798 |
retval = 0xFFFFFFFF;
|
| 799 |
if (addr & 0xF) |
| 800 |
return retval;
|
| 801 |
addr = addr & 0xFFF0;
|
| 802 |
idx = addr >> 5;
|
| 803 |
if (addr & 0x10) { |
| 804 |
/* EXDE / IFEDE / IEEDE */
|
| 805 |
retval = read_IRQreg_ide(opp, idx); |
| 806 |
} else {
|
| 807 |
/* EXVP / IFEVP / IEEVP */
|
| 808 |
retval = read_IRQreg_ipvp(opp, idx); |
| 809 |
} |
| 810 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 811 |
|
| 812 |
return retval;
|
| 813 |
} |
| 814 |
|
| 815 |
static void openpic_cpu_write_internal(void *opaque, target_phys_addr_t addr, |
| 816 |
uint32_t val, int idx)
|
| 817 |
{
|
| 818 |
openpic_t *opp = opaque; |
| 819 |
IRQ_src_t *src; |
| 820 |
IRQ_dst_t *dst; |
| 821 |
int s_IRQ, n_IRQ;
|
| 822 |
|
| 823 |
DPRINTF("%s: cpu %d addr " TARGET_FMT_plx " <= %08x\n", __func__, idx, |
| 824 |
addr, val); |
| 825 |
if (addr & 0xF) |
| 826 |
return;
|
| 827 |
dst = &opp->dst[idx]; |
| 828 |
addr &= 0xFF0;
|
| 829 |
switch (addr) {
|
| 830 |
#if MAX_IPI > 0 |
| 831 |
case 0x40: /* IPIDR */ |
| 832 |
case 0x50: |
| 833 |
case 0x60: |
| 834 |
case 0x70: |
| 835 |
idx = (addr - 0x40) >> 4; |
| 836 |
/* we use IDE as mask which CPUs to deliver the IPI to still. */
|
| 837 |
write_IRQreg_ide(opp, opp->irq_ipi0 + idx, |
| 838 |
opp->src[opp->irq_ipi0 + idx].ide | val); |
| 839 |
openpic_set_irq(opp, opp->irq_ipi0 + idx, 1);
|
| 840 |
openpic_set_irq(opp, opp->irq_ipi0 + idx, 0);
|
| 841 |
break;
|
| 842 |
#endif
|
| 843 |
case 0x80: /* PCTP */ |
| 844 |
dst->pctp = val & 0x0000000F;
|
| 845 |
break;
|
| 846 |
case 0x90: /* WHOAMI */ |
| 847 |
/* Read-only register */
|
| 848 |
break;
|
| 849 |
case 0xA0: /* PIAC */ |
| 850 |
/* Read-only register */
|
| 851 |
break;
|
| 852 |
case 0xB0: /* PEOI */ |
| 853 |
DPRINTF("PEOI\n");
|
| 854 |
s_IRQ = IRQ_get_next(opp, &dst->servicing); |
| 855 |
IRQ_resetbit(&dst->servicing, s_IRQ); |
| 856 |
dst->servicing.next = -1;
|
| 857 |
/* Set up next servicing IRQ */
|
| 858 |
s_IRQ = IRQ_get_next(opp, &dst->servicing); |
| 859 |
/* Check queued interrupts. */
|
| 860 |
n_IRQ = IRQ_get_next(opp, &dst->raised); |
| 861 |
src = &opp->src[n_IRQ]; |
| 862 |
if (n_IRQ != -1 && |
| 863 |
(s_IRQ == -1 ||
|
| 864 |
IPVP_PRIORITY(src->ipvp) > dst->servicing.priority)) {
|
| 865 |
DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n",
|
| 866 |
idx, n_IRQ); |
| 867 |
opp->irq_raise(opp, idx, src); |
| 868 |
} |
| 869 |
break;
|
| 870 |
default:
|
| 871 |
break;
|
| 872 |
} |
| 873 |
} |
| 874 |
|
| 875 |
static void openpic_cpu_write(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 876 |
{
|
| 877 |
openpic_cpu_write_internal(opaque, addr, val, (addr & 0x1f000) >> 12); |
| 878 |
} |
| 879 |
|
| 880 |
static uint32_t openpic_cpu_read_internal(void *opaque, target_phys_addr_t addr, |
| 881 |
int idx)
|
| 882 |
{
|
| 883 |
openpic_t *opp = opaque; |
| 884 |
IRQ_src_t *src; |
| 885 |
IRQ_dst_t *dst; |
| 886 |
uint32_t retval; |
| 887 |
int n_IRQ;
|
| 888 |
|
| 889 |
DPRINTF("%s: cpu %d addr " TARGET_FMT_plx "\n", __func__, idx, addr); |
| 890 |
retval = 0xFFFFFFFF;
|
| 891 |
if (addr & 0xF) |
| 892 |
return retval;
|
| 893 |
dst = &opp->dst[idx]; |
| 894 |
addr &= 0xFF0;
|
| 895 |
switch (addr) {
|
| 896 |
case 0x80: /* PCTP */ |
| 897 |
retval = dst->pctp; |
| 898 |
break;
|
| 899 |
case 0x90: /* WHOAMI */ |
| 900 |
retval = idx; |
| 901 |
break;
|
| 902 |
case 0xA0: /* PIAC */ |
| 903 |
DPRINTF("Lower OpenPIC INT output\n");
|
| 904 |
qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_INT]); |
| 905 |
n_IRQ = IRQ_get_next(opp, &dst->raised); |
| 906 |
DPRINTF("PIAC: irq=%d\n", n_IRQ);
|
| 907 |
if (n_IRQ == -1) { |
| 908 |
/* No more interrupt pending */
|
| 909 |
retval = IPVP_VECTOR(opp->spve); |
| 910 |
} else {
|
| 911 |
src = &opp->src[n_IRQ]; |
| 912 |
if (!test_bit(&src->ipvp, IPVP_ACTIVITY) ||
|
| 913 |
!(IPVP_PRIORITY(src->ipvp) > dst->pctp)) {
|
| 914 |
/* - Spurious level-sensitive IRQ
|
| 915 |
* - Priorities has been changed
|
| 916 |
* and the pending IRQ isn't allowed anymore
|
| 917 |
*/
|
| 918 |
reset_bit(&src->ipvp, IPVP_ACTIVITY); |
| 919 |
retval = IPVP_VECTOR(opp->spve); |
| 920 |
} else {
|
| 921 |
/* IRQ enter servicing state */
|
| 922 |
IRQ_setbit(&dst->servicing, n_IRQ); |
| 923 |
retval = IPVP_VECTOR(src->ipvp); |
| 924 |
} |
| 925 |
IRQ_resetbit(&dst->raised, n_IRQ); |
| 926 |
dst->raised.next = -1;
|
| 927 |
if (!test_bit(&src->ipvp, IPVP_SENSE)) {
|
| 928 |
/* edge-sensitive IRQ */
|
| 929 |
reset_bit(&src->ipvp, IPVP_ACTIVITY); |
| 930 |
src->pending = 0;
|
| 931 |
} |
| 932 |
|
| 933 |
if ((n_IRQ >= opp->irq_ipi0) && (n_IRQ < (opp->irq_ipi0 + MAX_IPI))) {
|
| 934 |
src->ide &= ~(1 << idx);
|
| 935 |
if (src->ide && !test_bit(&src->ipvp, IPVP_SENSE)) {
|
| 936 |
/* trigger on CPUs that didn't know about it yet */
|
| 937 |
openpic_set_irq(opp, n_IRQ, 1);
|
| 938 |
openpic_set_irq(opp, n_IRQ, 0);
|
| 939 |
/* if all CPUs knew about it, set active bit again */
|
| 940 |
set_bit(&src->ipvp, IPVP_ACTIVITY); |
| 941 |
} |
| 942 |
} |
| 943 |
} |
| 944 |
break;
|
| 945 |
case 0xB0: /* PEOI */ |
| 946 |
retval = 0;
|
| 947 |
break;
|
| 948 |
default:
|
| 949 |
break;
|
| 950 |
} |
| 951 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 952 |
|
| 953 |
return retval;
|
| 954 |
} |
| 955 |
|
| 956 |
static uint32_t openpic_cpu_read(void *opaque, target_phys_addr_t addr) |
| 957 |
{
|
| 958 |
return openpic_cpu_read_internal(opaque, addr, (addr & 0x1f000) >> 12); |
| 959 |
} |
| 960 |
|
| 961 |
static void openpic_buggy_write (void *opaque, |
| 962 |
target_phys_addr_t addr, uint32_t val) |
| 963 |
{
|
| 964 |
printf("Invalid OPENPIC write access !\n");
|
| 965 |
} |
| 966 |
|
| 967 |
static uint32_t openpic_buggy_read (void *opaque, target_phys_addr_t addr) |
| 968 |
{
|
| 969 |
printf("Invalid OPENPIC read access !\n");
|
| 970 |
|
| 971 |
return -1; |
| 972 |
} |
| 973 |
|
| 974 |
static void openpic_writel (void *opaque, |
| 975 |
target_phys_addr_t addr, uint32_t val) |
| 976 |
{
|
| 977 |
openpic_t *opp = opaque; |
| 978 |
|
| 979 |
addr &= 0x3FFFF;
|
| 980 |
DPRINTF("%s: offset %08x val: %08x\n", __func__, (int)addr, val); |
| 981 |
if (addr < 0x1100) { |
| 982 |
/* Global registers */
|
| 983 |
openpic_gbl_write(opp, addr, val); |
| 984 |
} else if (addr < 0x10000) { |
| 985 |
/* Timers registers */
|
| 986 |
openpic_timer_write(opp, addr, val); |
| 987 |
} else if (addr < 0x20000) { |
| 988 |
/* Source registers */
|
| 989 |
openpic_src_write(opp, addr, val); |
| 990 |
} else {
|
| 991 |
/* CPU registers */
|
| 992 |
openpic_cpu_write(opp, addr, val); |
| 993 |
} |
| 994 |
} |
| 995 |
|
| 996 |
static uint32_t openpic_readl (void *opaque,target_phys_addr_t addr) |
| 997 |
{
|
| 998 |
openpic_t *opp = opaque; |
| 999 |
uint32_t retval; |
| 1000 |
|
| 1001 |
addr &= 0x3FFFF;
|
| 1002 |
DPRINTF("%s: offset %08x\n", __func__, (int)addr); |
| 1003 |
if (addr < 0x1100) { |
| 1004 |
/* Global registers */
|
| 1005 |
retval = openpic_gbl_read(opp, addr); |
| 1006 |
} else if (addr < 0x10000) { |
| 1007 |
/* Timers registers */
|
| 1008 |
retval = openpic_timer_read(opp, addr); |
| 1009 |
} else if (addr < 0x20000) { |
| 1010 |
/* Source registers */
|
| 1011 |
retval = openpic_src_read(opp, addr); |
| 1012 |
} else {
|
| 1013 |
/* CPU registers */
|
| 1014 |
retval = openpic_cpu_read(opp, addr); |
| 1015 |
} |
| 1016 |
|
| 1017 |
return retval;
|
| 1018 |
} |
| 1019 |
|
| 1020 |
static uint64_t openpic_read(void *opaque, target_phys_addr_t addr, |
| 1021 |
unsigned size)
|
| 1022 |
{
|
| 1023 |
openpic_t *opp = opaque; |
| 1024 |
|
| 1025 |
switch (size) {
|
| 1026 |
case 4: return openpic_readl(opp, addr); |
| 1027 |
default: return openpic_buggy_read(opp, addr); |
| 1028 |
} |
| 1029 |
} |
| 1030 |
|
| 1031 |
static void openpic_write(void *opaque, target_phys_addr_t addr, |
| 1032 |
uint64_t data, unsigned size)
|
| 1033 |
{
|
| 1034 |
openpic_t *opp = opaque; |
| 1035 |
|
| 1036 |
switch (size) {
|
| 1037 |
case 4: return openpic_writel(opp, addr, data); |
| 1038 |
default: return openpic_buggy_write(opp, addr, data); |
| 1039 |
} |
| 1040 |
} |
| 1041 |
|
| 1042 |
static const MemoryRegionOps openpic_ops = { |
| 1043 |
.read = openpic_read, |
| 1044 |
.write = openpic_write, |
| 1045 |
.endianness = DEVICE_LITTLE_ENDIAN, |
| 1046 |
}; |
| 1047 |
|
| 1048 |
static void openpic_save_IRQ_queue(QEMUFile* f, IRQ_queue_t *q) |
| 1049 |
{
|
| 1050 |
unsigned int i; |
| 1051 |
|
| 1052 |
for (i = 0; i < BF_WIDTH(MAX_IRQ); i++) |
| 1053 |
qemu_put_be32s(f, &q->queue[i]); |
| 1054 |
|
| 1055 |
qemu_put_sbe32s(f, &q->next); |
| 1056 |
qemu_put_sbe32s(f, &q->priority); |
| 1057 |
} |
| 1058 |
|
| 1059 |
static void openpic_save(QEMUFile* f, void *opaque) |
| 1060 |
{
|
| 1061 |
openpic_t *opp = (openpic_t *)opaque; |
| 1062 |
unsigned int i; |
| 1063 |
|
| 1064 |
qemu_put_be32s(f, &opp->frep); |
| 1065 |
qemu_put_be32s(f, &opp->glbc); |
| 1066 |
qemu_put_be32s(f, &opp->micr); |
| 1067 |
qemu_put_be32s(f, &opp->veni); |
| 1068 |
qemu_put_be32s(f, &opp->pint); |
| 1069 |
qemu_put_be32s(f, &opp->spve); |
| 1070 |
qemu_put_be32s(f, &opp->tifr); |
| 1071 |
|
| 1072 |
for (i = 0; i < opp->max_irq; i++) { |
| 1073 |
qemu_put_be32s(f, &opp->src[i].ipvp); |
| 1074 |
qemu_put_be32s(f, &opp->src[i].ide); |
| 1075 |
qemu_put_sbe32s(f, &opp->src[i].type); |
| 1076 |
qemu_put_sbe32s(f, &opp->src[i].last_cpu); |
| 1077 |
qemu_put_sbe32s(f, &opp->src[i].pending); |
| 1078 |
} |
| 1079 |
|
| 1080 |
qemu_put_sbe32s(f, &opp->nb_cpus); |
| 1081 |
|
| 1082 |
for (i = 0; i < opp->nb_cpus; i++) { |
| 1083 |
qemu_put_be32s(f, &opp->dst[i].tfrr); |
| 1084 |
qemu_put_be32s(f, &opp->dst[i].pctp); |
| 1085 |
qemu_put_be32s(f, &opp->dst[i].pcsr); |
| 1086 |
openpic_save_IRQ_queue(f, &opp->dst[i].raised); |
| 1087 |
openpic_save_IRQ_queue(f, &opp->dst[i].servicing); |
| 1088 |
} |
| 1089 |
|
| 1090 |
for (i = 0; i < MAX_TMR; i++) { |
| 1091 |
qemu_put_be32s(f, &opp->timers[i].ticc); |
| 1092 |
qemu_put_be32s(f, &opp->timers[i].tibc); |
| 1093 |
} |
| 1094 |
|
| 1095 |
#if MAX_DBL > 0 |
| 1096 |
qemu_put_be32s(f, &opp->dar); |
| 1097 |
|
| 1098 |
for (i = 0; i < MAX_DBL; i++) { |
| 1099 |
qemu_put_be32s(f, &opp->doorbells[i].dmr); |
| 1100 |
} |
| 1101 |
#endif
|
| 1102 |
|
| 1103 |
#if MAX_MBX > 0 |
| 1104 |
for (i = 0; i < MAX_MAILBOXES; i++) { |
| 1105 |
qemu_put_be32s(f, &opp->mailboxes[i].mbr); |
| 1106 |
} |
| 1107 |
#endif
|
| 1108 |
|
| 1109 |
pci_device_save(&opp->pci_dev, f); |
| 1110 |
} |
| 1111 |
|
| 1112 |
static void openpic_load_IRQ_queue(QEMUFile* f, IRQ_queue_t *q) |
| 1113 |
{
|
| 1114 |
unsigned int i; |
| 1115 |
|
| 1116 |
for (i = 0; i < BF_WIDTH(MAX_IRQ); i++) |
| 1117 |
qemu_get_be32s(f, &q->queue[i]); |
| 1118 |
|
| 1119 |
qemu_get_sbe32s(f, &q->next); |
| 1120 |
qemu_get_sbe32s(f, &q->priority); |
| 1121 |
} |
| 1122 |
|
| 1123 |
static int openpic_load(QEMUFile* f, void *opaque, int version_id) |
| 1124 |
{
|
| 1125 |
openpic_t *opp = (openpic_t *)opaque; |
| 1126 |
unsigned int i; |
| 1127 |
|
| 1128 |
if (version_id != 1) |
| 1129 |
return -EINVAL;
|
| 1130 |
|
| 1131 |
qemu_get_be32s(f, &opp->frep); |
| 1132 |
qemu_get_be32s(f, &opp->glbc); |
| 1133 |
qemu_get_be32s(f, &opp->micr); |
| 1134 |
qemu_get_be32s(f, &opp->veni); |
| 1135 |
qemu_get_be32s(f, &opp->pint); |
| 1136 |
qemu_get_be32s(f, &opp->spve); |
| 1137 |
qemu_get_be32s(f, &opp->tifr); |
| 1138 |
|
| 1139 |
for (i = 0; i < opp->max_irq; i++) { |
| 1140 |
qemu_get_be32s(f, &opp->src[i].ipvp); |
| 1141 |
qemu_get_be32s(f, &opp->src[i].ide); |
| 1142 |
qemu_get_sbe32s(f, &opp->src[i].type); |
| 1143 |
qemu_get_sbe32s(f, &opp->src[i].last_cpu); |
| 1144 |
qemu_get_sbe32s(f, &opp->src[i].pending); |
| 1145 |
} |
| 1146 |
|
| 1147 |
qemu_get_sbe32s(f, &opp->nb_cpus); |
| 1148 |
|
| 1149 |
for (i = 0; i < opp->nb_cpus; i++) { |
| 1150 |
qemu_get_be32s(f, &opp->dst[i].tfrr); |
| 1151 |
qemu_get_be32s(f, &opp->dst[i].pctp); |
| 1152 |
qemu_get_be32s(f, &opp->dst[i].pcsr); |
| 1153 |
openpic_load_IRQ_queue(f, &opp->dst[i].raised); |
| 1154 |
openpic_load_IRQ_queue(f, &opp->dst[i].servicing); |
| 1155 |
} |
| 1156 |
|
| 1157 |
for (i = 0; i < MAX_TMR; i++) { |
| 1158 |
qemu_get_be32s(f, &opp->timers[i].ticc); |
| 1159 |
qemu_get_be32s(f, &opp->timers[i].tibc); |
| 1160 |
} |
| 1161 |
|
| 1162 |
#if MAX_DBL > 0 |
| 1163 |
qemu_get_be32s(f, &opp->dar); |
| 1164 |
|
| 1165 |
for (i = 0; i < MAX_DBL; i++) { |
| 1166 |
qemu_get_be32s(f, &opp->doorbells[i].dmr); |
| 1167 |
} |
| 1168 |
#endif
|
| 1169 |
|
| 1170 |
#if MAX_MBX > 0 |
| 1171 |
for (i = 0; i < MAX_MAILBOXES; i++) { |
| 1172 |
qemu_get_be32s(f, &opp->mailboxes[i].mbr); |
| 1173 |
} |
| 1174 |
#endif
|
| 1175 |
|
| 1176 |
return pci_device_load(&opp->pci_dev, f);
|
| 1177 |
} |
| 1178 |
|
| 1179 |
static void openpic_irq_raise(openpic_t *opp, int n_CPU, IRQ_src_t *src) |
| 1180 |
{
|
| 1181 |
qemu_irq_raise(opp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]); |
| 1182 |
} |
| 1183 |
|
| 1184 |
qemu_irq *openpic_init (PCIBus *bus, MemoryRegion **pmem, int nb_cpus,
|
| 1185 |
qemu_irq **irqs, qemu_irq irq_out) |
| 1186 |
{
|
| 1187 |
openpic_t *opp; |
| 1188 |
uint8_t *pci_conf; |
| 1189 |
int i, m;
|
| 1190 |
|
| 1191 |
/* XXX: for now, only one CPU is supported */
|
| 1192 |
if (nb_cpus != 1) |
| 1193 |
return NULL; |
| 1194 |
if (bus) {
|
| 1195 |
opp = (openpic_t *)pci_register_device(bus, "OpenPIC", sizeof(openpic_t), |
| 1196 |
-1, NULL, NULL); |
| 1197 |
pci_conf = opp->pci_dev.config; |
| 1198 |
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_IBM); |
| 1199 |
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_IBM_OPENPIC2); |
| 1200 |
pci_config_set_class(pci_conf, PCI_CLASS_SYSTEM_OTHER); // FIXME?
|
| 1201 |
pci_conf[0x3d] = 0x00; // no interrupt pin |
| 1202 |
|
| 1203 |
memory_region_init_io(&opp->mem, &openpic_ops, opp, "openpic", 0x40000); |
| 1204 |
#if 0 // Don't implement ISU for now
|
| 1205 |
opp_io_memory = cpu_register_io_memory(openpic_src_read,
|
| 1206 |
openpic_src_write, NULL
|
| 1207 |
DEVICE_NATIVE_ENDIAN);
|
| 1208 |
cpu_register_physical_memory(isu_base, 0x20 * (EXT_IRQ + 2),
|
| 1209 |
opp_io_memory);
|
| 1210 |
#endif
|
| 1211 |
|
| 1212 |
/* Register I/O spaces */
|
| 1213 |
pci_register_bar(&opp->pci_dev, 0,
|
| 1214 |
PCI_BASE_ADDRESS_SPACE_MEMORY, &opp->mem); |
| 1215 |
} else {
|
| 1216 |
opp = g_malloc0(sizeof(openpic_t));
|
| 1217 |
memory_region_init_io(&opp->mem, &openpic_ops, opp, "openpic", 0x40000); |
| 1218 |
} |
| 1219 |
|
| 1220 |
// isu_base &= 0xFFFC0000;
|
| 1221 |
opp->nb_cpus = nb_cpus; |
| 1222 |
opp->max_irq = OPENPIC_MAX_IRQ; |
| 1223 |
opp->irq_ipi0 = OPENPIC_IRQ_IPI0; |
| 1224 |
opp->irq_tim0 = OPENPIC_IRQ_TIM0; |
| 1225 |
/* Set IRQ types */
|
| 1226 |
for (i = 0; i < OPENPIC_EXT_IRQ; i++) { |
| 1227 |
opp->src[i].type = IRQ_EXTERNAL; |
| 1228 |
} |
| 1229 |
for (; i < OPENPIC_IRQ_TIM0; i++) {
|
| 1230 |
opp->src[i].type = IRQ_SPECIAL; |
| 1231 |
} |
| 1232 |
#if MAX_IPI > 0 |
| 1233 |
m = OPENPIC_IRQ_IPI0; |
| 1234 |
#else
|
| 1235 |
m = OPENPIC_IRQ_DBL0; |
| 1236 |
#endif
|
| 1237 |
for (; i < m; i++) {
|
| 1238 |
opp->src[i].type = IRQ_TIMER; |
| 1239 |
} |
| 1240 |
for (; i < OPENPIC_MAX_IRQ; i++) {
|
| 1241 |
opp->src[i].type = IRQ_INTERNAL; |
| 1242 |
} |
| 1243 |
for (i = 0; i < nb_cpus; i++) |
| 1244 |
opp->dst[i].irqs = irqs[i]; |
| 1245 |
opp->irq_out = irq_out; |
| 1246 |
|
| 1247 |
register_savevm(&opp->pci_dev.qdev, "openpic", 0, 2, |
| 1248 |
openpic_save, openpic_load, opp); |
| 1249 |
qemu_register_reset(openpic_reset, opp); |
| 1250 |
|
| 1251 |
opp->irq_raise = openpic_irq_raise; |
| 1252 |
opp->reset = openpic_reset; |
| 1253 |
|
| 1254 |
if (pmem)
|
| 1255 |
*pmem = &opp->mem; |
| 1256 |
|
| 1257 |
return qemu_allocate_irqs(openpic_set_irq, opp, opp->max_irq);
|
| 1258 |
} |
| 1259 |
|
| 1260 |
static void mpic_irq_raise(openpic_t *mpp, int n_CPU, IRQ_src_t *src) |
| 1261 |
{
|
| 1262 |
int n_ci = IDR_CI0 - n_CPU;
|
| 1263 |
|
| 1264 |
if(test_bit(&src->ide, n_ci)) {
|
| 1265 |
qemu_irq_raise(mpp->dst[n_CPU].irqs[OPENPIC_OUTPUT_CINT]); |
| 1266 |
} |
| 1267 |
else {
|
| 1268 |
qemu_irq_raise(mpp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]); |
| 1269 |
} |
| 1270 |
} |
| 1271 |
|
| 1272 |
static void mpic_reset (void *opaque) |
| 1273 |
{
|
| 1274 |
openpic_t *mpp = (openpic_t *)opaque; |
| 1275 |
int i;
|
| 1276 |
|
| 1277 |
mpp->glbc = 0x80000000;
|
| 1278 |
/* Initialise controller registers */
|
| 1279 |
mpp->frep = 0x004f0002 | ((mpp->nb_cpus - 1) << 8); |
| 1280 |
mpp->veni = VENI; |
| 1281 |
mpp->pint = 0x00000000;
|
| 1282 |
mpp->spve = 0x0000FFFF;
|
| 1283 |
/* Initialise IRQ sources */
|
| 1284 |
for (i = 0; i < mpp->max_irq; i++) { |
| 1285 |
mpp->src[i].ipvp = 0x80800000;
|
| 1286 |
mpp->src[i].ide = 0x00000001;
|
| 1287 |
} |
| 1288 |
/* Set IDE for IPIs to 0 so we don't get spurious interrupts */
|
| 1289 |
for (i = mpp->irq_ipi0; i < (mpp->irq_ipi0 + MAX_IPI); i++) {
|
| 1290 |
mpp->src[i].ide = 0;
|
| 1291 |
} |
| 1292 |
/* Initialise IRQ destinations */
|
| 1293 |
for (i = 0; i < MAX_CPU; i++) { |
| 1294 |
mpp->dst[i].pctp = 0x0000000F;
|
| 1295 |
mpp->dst[i].tfrr = 0x00000000;
|
| 1296 |
memset(&mpp->dst[i].raised, 0, sizeof(IRQ_queue_t)); |
| 1297 |
mpp->dst[i].raised.next = -1;
|
| 1298 |
memset(&mpp->dst[i].servicing, 0, sizeof(IRQ_queue_t)); |
| 1299 |
mpp->dst[i].servicing.next = -1;
|
| 1300 |
} |
| 1301 |
/* Initialise timers */
|
| 1302 |
for (i = 0; i < MAX_TMR; i++) { |
| 1303 |
mpp->timers[i].ticc = 0x00000000;
|
| 1304 |
mpp->timers[i].tibc = 0x80000000;
|
| 1305 |
} |
| 1306 |
/* Go out of RESET state */
|
| 1307 |
mpp->glbc = 0x00000000;
|
| 1308 |
} |
| 1309 |
|
| 1310 |
static void mpic_timer_write (void *opaque, target_phys_addr_t addr, uint32_t val) |
| 1311 |
{
|
| 1312 |
openpic_t *mpp = opaque; |
| 1313 |
int idx, cpu;
|
| 1314 |
|
| 1315 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1316 |
if (addr & 0xF) |
| 1317 |
return;
|
| 1318 |
addr &= 0xFFFF;
|
| 1319 |
cpu = addr >> 12;
|
| 1320 |
idx = (addr >> 6) & 0x3; |
| 1321 |
switch (addr & 0x30) { |
| 1322 |
case 0x00: /* gtccr */ |
| 1323 |
break;
|
| 1324 |
case 0x10: /* gtbcr */ |
| 1325 |
if ((mpp->timers[idx].ticc & 0x80000000) != 0 && |
| 1326 |
(val & 0x80000000) == 0 && |
| 1327 |
(mpp->timers[idx].tibc & 0x80000000) != 0) |
| 1328 |
mpp->timers[idx].ticc &= ~0x80000000;
|
| 1329 |
mpp->timers[idx].tibc = val; |
| 1330 |
break;
|
| 1331 |
case 0x20: /* GTIVPR */ |
| 1332 |
write_IRQreg_ipvp(mpp, MPIC_TMR_IRQ + idx, val); |
| 1333 |
break;
|
| 1334 |
case 0x30: /* GTIDR & TFRR */ |
| 1335 |
if ((addr & 0xF0) == 0xF0) |
| 1336 |
mpp->dst[cpu].tfrr = val; |
| 1337 |
else
|
| 1338 |
write_IRQreg_ide(mpp, MPIC_TMR_IRQ + idx, val); |
| 1339 |
break;
|
| 1340 |
} |
| 1341 |
} |
| 1342 |
|
| 1343 |
static uint32_t mpic_timer_read (void *opaque, target_phys_addr_t addr) |
| 1344 |
{
|
| 1345 |
openpic_t *mpp = opaque; |
| 1346 |
uint32_t retval; |
| 1347 |
int idx, cpu;
|
| 1348 |
|
| 1349 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1350 |
retval = 0xFFFFFFFF;
|
| 1351 |
if (addr & 0xF) |
| 1352 |
return retval;
|
| 1353 |
addr &= 0xFFFF;
|
| 1354 |
cpu = addr >> 12;
|
| 1355 |
idx = (addr >> 6) & 0x3; |
| 1356 |
switch (addr & 0x30) { |
| 1357 |
case 0x00: /* gtccr */ |
| 1358 |
retval = mpp->timers[idx].ticc; |
| 1359 |
break;
|
| 1360 |
case 0x10: /* gtbcr */ |
| 1361 |
retval = mpp->timers[idx].tibc; |
| 1362 |
break;
|
| 1363 |
case 0x20: /* TIPV */ |
| 1364 |
retval = read_IRQreg_ipvp(mpp, MPIC_TMR_IRQ + idx); |
| 1365 |
break;
|
| 1366 |
case 0x30: /* TIDR */ |
| 1367 |
if ((addr &0xF0) == 0XF0) |
| 1368 |
retval = mpp->dst[cpu].tfrr; |
| 1369 |
else
|
| 1370 |
retval = read_IRQreg_ide(mpp, MPIC_TMR_IRQ + idx); |
| 1371 |
break;
|
| 1372 |
} |
| 1373 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1374 |
|
| 1375 |
return retval;
|
| 1376 |
} |
| 1377 |
|
| 1378 |
static void mpic_src_ext_write (void *opaque, target_phys_addr_t addr, |
| 1379 |
uint32_t val) |
| 1380 |
{
|
| 1381 |
openpic_t *mpp = opaque; |
| 1382 |
int idx = MPIC_EXT_IRQ;
|
| 1383 |
|
| 1384 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1385 |
if (addr & 0xF) |
| 1386 |
return;
|
| 1387 |
|
| 1388 |
addr -= MPIC_EXT_REG_START & (OPENPIC_PAGE_SIZE - 1);
|
| 1389 |
if (addr < MPIC_EXT_REG_SIZE) {
|
| 1390 |
idx += (addr & 0xFFF0) >> 5; |
| 1391 |
if (addr & 0x10) { |
| 1392 |
/* EXDE / IFEDE / IEEDE */
|
| 1393 |
write_IRQreg_ide(mpp, idx, val); |
| 1394 |
} else {
|
| 1395 |
/* EXVP / IFEVP / IEEVP */
|
| 1396 |
write_IRQreg_ipvp(mpp, idx, val); |
| 1397 |
} |
| 1398 |
} |
| 1399 |
} |
| 1400 |
|
| 1401 |
static uint32_t mpic_src_ext_read (void *opaque, target_phys_addr_t addr) |
| 1402 |
{
|
| 1403 |
openpic_t *mpp = opaque; |
| 1404 |
uint32_t retval; |
| 1405 |
int idx = MPIC_EXT_IRQ;
|
| 1406 |
|
| 1407 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1408 |
retval = 0xFFFFFFFF;
|
| 1409 |
if (addr & 0xF) |
| 1410 |
return retval;
|
| 1411 |
|
| 1412 |
addr -= MPIC_EXT_REG_START & (OPENPIC_PAGE_SIZE - 1);
|
| 1413 |
if (addr < MPIC_EXT_REG_SIZE) {
|
| 1414 |
idx += (addr & 0xFFF0) >> 5; |
| 1415 |
if (addr & 0x10) { |
| 1416 |
/* EXDE / IFEDE / IEEDE */
|
| 1417 |
retval = read_IRQreg_ide(mpp, idx); |
| 1418 |
} else {
|
| 1419 |
/* EXVP / IFEVP / IEEVP */
|
| 1420 |
retval = read_IRQreg_ipvp(mpp, idx); |
| 1421 |
} |
| 1422 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1423 |
} |
| 1424 |
|
| 1425 |
return retval;
|
| 1426 |
} |
| 1427 |
|
| 1428 |
static void mpic_src_int_write (void *opaque, target_phys_addr_t addr, |
| 1429 |
uint32_t val) |
| 1430 |
{
|
| 1431 |
openpic_t *mpp = opaque; |
| 1432 |
int idx = MPIC_INT_IRQ;
|
| 1433 |
|
| 1434 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1435 |
if (addr & 0xF) |
| 1436 |
return;
|
| 1437 |
|
| 1438 |
addr -= MPIC_INT_REG_START & (OPENPIC_PAGE_SIZE - 1);
|
| 1439 |
if (addr < MPIC_INT_REG_SIZE) {
|
| 1440 |
idx += (addr & 0xFFF0) >> 5; |
| 1441 |
if (addr & 0x10) { |
| 1442 |
/* EXDE / IFEDE / IEEDE */
|
| 1443 |
write_IRQreg_ide(mpp, idx, val); |
| 1444 |
} else {
|
| 1445 |
/* EXVP / IFEVP / IEEVP */
|
| 1446 |
write_IRQreg_ipvp(mpp, idx, val); |
| 1447 |
} |
| 1448 |
} |
| 1449 |
} |
| 1450 |
|
| 1451 |
static uint32_t mpic_src_int_read (void *opaque, target_phys_addr_t addr) |
| 1452 |
{
|
| 1453 |
openpic_t *mpp = opaque; |
| 1454 |
uint32_t retval; |
| 1455 |
int idx = MPIC_INT_IRQ;
|
| 1456 |
|
| 1457 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1458 |
retval = 0xFFFFFFFF;
|
| 1459 |
if (addr & 0xF) |
| 1460 |
return retval;
|
| 1461 |
|
| 1462 |
addr -= MPIC_INT_REG_START & (OPENPIC_PAGE_SIZE - 1);
|
| 1463 |
if (addr < MPIC_INT_REG_SIZE) {
|
| 1464 |
idx += (addr & 0xFFF0) >> 5; |
| 1465 |
if (addr & 0x10) { |
| 1466 |
/* EXDE / IFEDE / IEEDE */
|
| 1467 |
retval = read_IRQreg_ide(mpp, idx); |
| 1468 |
} else {
|
| 1469 |
/* EXVP / IFEVP / IEEVP */
|
| 1470 |
retval = read_IRQreg_ipvp(mpp, idx); |
| 1471 |
} |
| 1472 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1473 |
} |
| 1474 |
|
| 1475 |
return retval;
|
| 1476 |
} |
| 1477 |
|
| 1478 |
static void mpic_src_msg_write (void *opaque, target_phys_addr_t addr, |
| 1479 |
uint32_t val) |
| 1480 |
{
|
| 1481 |
openpic_t *mpp = opaque; |
| 1482 |
int idx = MPIC_MSG_IRQ;
|
| 1483 |
|
| 1484 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1485 |
if (addr & 0xF) |
| 1486 |
return;
|
| 1487 |
|
| 1488 |
addr -= MPIC_MSG_REG_START & (OPENPIC_PAGE_SIZE - 1);
|
| 1489 |
if (addr < MPIC_MSG_REG_SIZE) {
|
| 1490 |
idx += (addr & 0xFFF0) >> 5; |
| 1491 |
if (addr & 0x10) { |
| 1492 |
/* EXDE / IFEDE / IEEDE */
|
| 1493 |
write_IRQreg_ide(mpp, idx, val); |
| 1494 |
} else {
|
| 1495 |
/* EXVP / IFEVP / IEEVP */
|
| 1496 |
write_IRQreg_ipvp(mpp, idx, val); |
| 1497 |
} |
| 1498 |
} |
| 1499 |
} |
| 1500 |
|
| 1501 |
static uint32_t mpic_src_msg_read (void *opaque, target_phys_addr_t addr) |
| 1502 |
{
|
| 1503 |
openpic_t *mpp = opaque; |
| 1504 |
uint32_t retval; |
| 1505 |
int idx = MPIC_MSG_IRQ;
|
| 1506 |
|
| 1507 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1508 |
retval = 0xFFFFFFFF;
|
| 1509 |
if (addr & 0xF) |
| 1510 |
return retval;
|
| 1511 |
|
| 1512 |
addr -= MPIC_MSG_REG_START & (OPENPIC_PAGE_SIZE - 1);
|
| 1513 |
if (addr < MPIC_MSG_REG_SIZE) {
|
| 1514 |
idx += (addr & 0xFFF0) >> 5; |
| 1515 |
if (addr & 0x10) { |
| 1516 |
/* EXDE / IFEDE / IEEDE */
|
| 1517 |
retval = read_IRQreg_ide(mpp, idx); |
| 1518 |
} else {
|
| 1519 |
/* EXVP / IFEVP / IEEVP */
|
| 1520 |
retval = read_IRQreg_ipvp(mpp, idx); |
| 1521 |
} |
| 1522 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1523 |
} |
| 1524 |
|
| 1525 |
return retval;
|
| 1526 |
} |
| 1527 |
|
| 1528 |
static void mpic_src_msi_write (void *opaque, target_phys_addr_t addr, |
| 1529 |
uint32_t val) |
| 1530 |
{
|
| 1531 |
openpic_t *mpp = opaque; |
| 1532 |
int idx = MPIC_MSI_IRQ;
|
| 1533 |
|
| 1534 |
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| 1535 |
if (addr & 0xF) |
| 1536 |
return;
|
| 1537 |
|
| 1538 |
addr -= MPIC_MSI_REG_START & (OPENPIC_PAGE_SIZE - 1);
|
| 1539 |
if (addr < MPIC_MSI_REG_SIZE) {
|
| 1540 |
idx += (addr & 0xFFF0) >> 5; |
| 1541 |
if (addr & 0x10) { |
| 1542 |
/* EXDE / IFEDE / IEEDE */
|
| 1543 |
write_IRQreg_ide(mpp, idx, val); |
| 1544 |
} else {
|
| 1545 |
/* EXVP / IFEVP / IEEVP */
|
| 1546 |
write_IRQreg_ipvp(mpp, idx, val); |
| 1547 |
} |
| 1548 |
} |
| 1549 |
} |
| 1550 |
static uint32_t mpic_src_msi_read (void *opaque, target_phys_addr_t addr) |
| 1551 |
{
|
| 1552 |
openpic_t *mpp = opaque; |
| 1553 |
uint32_t retval; |
| 1554 |
int idx = MPIC_MSI_IRQ;
|
| 1555 |
|
| 1556 |
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 1557 |
retval = 0xFFFFFFFF;
|
| 1558 |
if (addr & 0xF) |
| 1559 |
return retval;
|
| 1560 |
|
| 1561 |
addr -= MPIC_MSI_REG_START & (OPENPIC_PAGE_SIZE - 1);
|
| 1562 |
if (addr < MPIC_MSI_REG_SIZE) {
|
| 1563 |
idx += (addr & 0xFFF0) >> 5; |
| 1564 |
if (addr & 0x10) { |
| 1565 |
/* EXDE / IFEDE / IEEDE */
|
| 1566 |
retval = read_IRQreg_ide(mpp, idx); |
| 1567 |
} else {
|
| 1568 |
/* EXVP / IFEVP / IEEVP */
|
| 1569 |
retval = read_IRQreg_ipvp(mpp, idx); |
| 1570 |
} |
| 1571 |
DPRINTF("%s: => %08x\n", __func__, retval);
|
| 1572 |
} |
| 1573 |
|
| 1574 |
return retval;
|
| 1575 |
} |
| 1576 |
|
| 1577 |
static const MemoryRegionOps mpic_glb_ops = { |
| 1578 |
.old_mmio = {
|
| 1579 |
.write = { openpic_buggy_write,
|
| 1580 |
openpic_buggy_write, |
| 1581 |
openpic_gbl_write, |
| 1582 |
}, |
| 1583 |
.read = { openpic_buggy_read,
|
| 1584 |
openpic_buggy_read, |
| 1585 |
openpic_gbl_read, |
| 1586 |
}, |
| 1587 |
}, |
| 1588 |
.endianness = DEVICE_BIG_ENDIAN, |
| 1589 |
}; |
| 1590 |
|
| 1591 |
static const MemoryRegionOps mpic_tmr_ops = { |
| 1592 |
.old_mmio = {
|
| 1593 |
.write = { openpic_buggy_write,
|
| 1594 |
openpic_buggy_write, |
| 1595 |
mpic_timer_write, |
| 1596 |
}, |
| 1597 |
.read = { openpic_buggy_read,
|
| 1598 |
openpic_buggy_read, |
| 1599 |
mpic_timer_read, |
| 1600 |
}, |
| 1601 |
}, |
| 1602 |
.endianness = DEVICE_BIG_ENDIAN, |
| 1603 |
}; |
| 1604 |
|
| 1605 |
static const MemoryRegionOps mpic_cpu_ops = { |
| 1606 |
.old_mmio = {
|
| 1607 |
.write = { openpic_buggy_write,
|
| 1608 |
openpic_buggy_write, |
| 1609 |
openpic_cpu_write, |
| 1610 |
}, |
| 1611 |
.read = { openpic_buggy_read,
|
| 1612 |
openpic_buggy_read, |
| 1613 |
openpic_cpu_read, |
| 1614 |
}, |
| 1615 |
}, |
| 1616 |
.endianness = DEVICE_BIG_ENDIAN, |
| 1617 |
}; |
| 1618 |
|
| 1619 |
static const MemoryRegionOps mpic_ext_ops = { |
| 1620 |
.old_mmio = {
|
| 1621 |
.write = { openpic_buggy_write,
|
| 1622 |
openpic_buggy_write, |
| 1623 |
mpic_src_ext_write, |
| 1624 |
}, |
| 1625 |
.read = { openpic_buggy_read,
|
| 1626 |
openpic_buggy_read, |
| 1627 |
mpic_src_ext_read, |
| 1628 |
}, |
| 1629 |
}, |
| 1630 |
.endianness = DEVICE_BIG_ENDIAN, |
| 1631 |
}; |
| 1632 |
|
| 1633 |
static const MemoryRegionOps mpic_int_ops = { |
| 1634 |
.old_mmio = {
|
| 1635 |
.write = { openpic_buggy_write,
|
| 1636 |
openpic_buggy_write, |
| 1637 |
mpic_src_int_write, |
| 1638 |
}, |
| 1639 |
.read = { openpic_buggy_read,
|
| 1640 |
openpic_buggy_read, |
| 1641 |
mpic_src_int_read, |
| 1642 |
}, |
| 1643 |
}, |
| 1644 |
.endianness = DEVICE_BIG_ENDIAN, |
| 1645 |
}; |
| 1646 |
|
| 1647 |
static const MemoryRegionOps mpic_msg_ops = { |
| 1648 |
.old_mmio = {
|
| 1649 |
.write = { openpic_buggy_write,
|
| 1650 |
openpic_buggy_write, |
| 1651 |
mpic_src_msg_write, |
| 1652 |
}, |
| 1653 |
.read = { openpic_buggy_read,
|
| 1654 |
openpic_buggy_read, |
| 1655 |
mpic_src_msg_read, |
| 1656 |
}, |
| 1657 |
}, |
| 1658 |
.endianness = DEVICE_BIG_ENDIAN, |
| 1659 |
}; |
| 1660 |
|
| 1661 |
static const MemoryRegionOps mpic_msi_ops = { |
| 1662 |
.old_mmio = {
|
| 1663 |
.write = { openpic_buggy_write,
|
| 1664 |
openpic_buggy_write, |
| 1665 |
mpic_src_msi_write, |
| 1666 |
}, |
| 1667 |
.read = { openpic_buggy_read,
|
| 1668 |
openpic_buggy_read, |
| 1669 |
mpic_src_msi_read, |
| 1670 |
}, |
| 1671 |
}, |
| 1672 |
.endianness = DEVICE_BIG_ENDIAN, |
| 1673 |
}; |
| 1674 |
|
| 1675 |
qemu_irq *mpic_init (MemoryRegion *address_space, target_phys_addr_t base, |
| 1676 |
int nb_cpus, qemu_irq **irqs, qemu_irq irq_out)
|
| 1677 |
{
|
| 1678 |
openpic_t *mpp; |
| 1679 |
int i;
|
| 1680 |
struct {
|
| 1681 |
const char *name; |
| 1682 |
MemoryRegionOps const *ops;
|
| 1683 |
target_phys_addr_t start_addr; |
| 1684 |
ram_addr_t size; |
| 1685 |
} const list[] = {
|
| 1686 |
{"glb", &mpic_glb_ops, MPIC_GLB_REG_START, MPIC_GLB_REG_SIZE},
|
| 1687 |
{"tmr", &mpic_tmr_ops, MPIC_TMR_REG_START, MPIC_TMR_REG_SIZE},
|
| 1688 |
{"ext", &mpic_ext_ops, MPIC_EXT_REG_START, MPIC_EXT_REG_SIZE},
|
| 1689 |
{"int", &mpic_int_ops, MPIC_INT_REG_START, MPIC_INT_REG_SIZE},
|
| 1690 |
{"msg", &mpic_msg_ops, MPIC_MSG_REG_START, MPIC_MSG_REG_SIZE},
|
| 1691 |
{"msi", &mpic_msi_ops, MPIC_MSI_REG_START, MPIC_MSI_REG_SIZE},
|
| 1692 |
{"cpu", &mpic_cpu_ops, MPIC_CPU_REG_START, MPIC_CPU_REG_SIZE},
|
| 1693 |
}; |
| 1694 |
|
| 1695 |
mpp = g_malloc0(sizeof(openpic_t));
|
| 1696 |
|
| 1697 |
memory_region_init(&mpp->mem, "mpic", 0x40000); |
| 1698 |
memory_region_add_subregion(address_space, base, &mpp->mem); |
| 1699 |
|
| 1700 |
for (i = 0; i < sizeof(list)/sizeof(list[0]); i++) { |
| 1701 |
|
| 1702 |
memory_region_init_io(&mpp->sub_io_mem[i], list[i].ops, mpp, |
| 1703 |
list[i].name, list[i].size); |
| 1704 |
|
| 1705 |
memory_region_add_subregion(&mpp->mem, list[i].start_addr, |
| 1706 |
&mpp->sub_io_mem[i]); |
| 1707 |
} |
| 1708 |
|
| 1709 |
mpp->nb_cpus = nb_cpus; |
| 1710 |
mpp->max_irq = MPIC_MAX_IRQ; |
| 1711 |
mpp->irq_ipi0 = MPIC_IPI_IRQ; |
| 1712 |
mpp->irq_tim0 = MPIC_TMR_IRQ; |
| 1713 |
|
| 1714 |
for (i = 0; i < nb_cpus; i++) |
| 1715 |
mpp->dst[i].irqs = irqs[i]; |
| 1716 |
mpp->irq_out = irq_out; |
| 1717 |
|
| 1718 |
mpp->irq_raise = mpic_irq_raise; |
| 1719 |
mpp->reset = mpic_reset; |
| 1720 |
|
| 1721 |
register_savevm(NULL, "mpic", 0, 2, openpic_save, openpic_load, mpp); |
| 1722 |
qemu_register_reset(mpic_reset, mpp); |
| 1723 |
|
| 1724 |
return qemu_allocate_irqs(openpic_set_irq, mpp, mpp->max_irq);
|
| 1725 |
} |