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xemu/hw/openpic.c
Alexander Graf bbc5842211 PPC: Bump MPIC up to 32 supported CPUs 
The MPIC emulation is now capable of handling up to 32 CPUs. Reflect that in
the code exporting the numbers out and fix an integer overflow while at it.

Signed-off-by: Alexander Graf <agraf@suse.de>

---

v1 -> v2:

  - Max cpus is 15 due to cINT routing
  - Report nb_cpus not MAX_CPUS in MPIC capabilities
2011-10-06 09:43:33 +02:00

1722 lines
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/*
* OpenPIC emulation
*
* Copyright (c) 2004 Jocelyn Mayer
* 2011 Alexander Graf
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/*
*
* Based on OpenPic implementations:
* - Intel GW80314 I/O companion chip developer's manual
* - Motorola MPC8245 & MPC8540 user manuals.
* - Motorola MCP750 (aka Raven) programmer manual.
* - Motorola Harrier programmer manuel
*
* Serial interrupts, as implemented in Raven chipset are not supported yet.
*
*/
#include "hw.h"
#include "ppc_mac.h"
#include "pci.h"
#include "openpic.h"
//#define DEBUG_OPENPIC
#ifdef DEBUG_OPENPIC
#define DPRINTF(fmt, ...) do { printf(fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) do { } while (0)
#endif
#define USE_MPCxxx /* Intel model is broken, for now */
#if defined (USE_INTEL_GW80314)
/* Intel GW80314 I/O Companion chip */
#define MAX_CPU 4
#define MAX_IRQ 32
#define MAX_DBL 4
#define MAX_MBX 4
#define MAX_TMR 4
#define VECTOR_BITS 8
#define MAX_IPI 4
#define VID (0x00000000)
#elif defined(USE_MPCxxx)
#define MAX_CPU 15
#define MAX_IRQ 128
#define MAX_DBL 0
#define MAX_MBX 0
#define MAX_TMR 4
#define VECTOR_BITS 8
#define MAX_IPI 4
#define VID 0x03 /* MPIC version ID */
#define VENI 0x00000000 /* Vendor ID */
enum {
IRQ_IPVP = 0,
IRQ_IDE,
};
/* OpenPIC */
#define OPENPIC_MAX_CPU 2
#define OPENPIC_MAX_IRQ 64
#define OPENPIC_EXT_IRQ 48
#define OPENPIC_MAX_TMR MAX_TMR
#define OPENPIC_MAX_IPI MAX_IPI
/* Interrupt definitions */
#define OPENPIC_IRQ_FE (OPENPIC_EXT_IRQ) /* Internal functional IRQ */
#define OPENPIC_IRQ_ERR (OPENPIC_EXT_IRQ + 1) /* Error IRQ */
#define OPENPIC_IRQ_TIM0 (OPENPIC_EXT_IRQ + 2) /* First timer IRQ */
#if OPENPIC_MAX_IPI > 0
#define OPENPIC_IRQ_IPI0 (OPENPIC_IRQ_TIM0 + OPENPIC_MAX_TMR) /* First IPI IRQ */
#define OPENPIC_IRQ_DBL0 (OPENPIC_IRQ_IPI0 + (OPENPIC_MAX_CPU * OPENPIC_MAX_IPI)) /* First doorbell IRQ */
#else
#define OPENPIC_IRQ_DBL0 (OPENPIC_IRQ_TIM0 + OPENPIC_MAX_TMR) /* First doorbell IRQ */
#define OPENPIC_IRQ_MBX0 (OPENPIC_IRQ_DBL0 + OPENPIC_MAX_DBL) /* First mailbox IRQ */
#endif
/* MPIC */
#define MPIC_MAX_CPU 1
#define MPIC_MAX_EXT 12
#define MPIC_MAX_INT 64
#define MPIC_MAX_MSG 4
#define MPIC_MAX_MSI 8
#define MPIC_MAX_TMR MAX_TMR
#define MPIC_MAX_IPI MAX_IPI
#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))
/* Interrupt definitions */
#define MPIC_EXT_IRQ 0
#define MPIC_INT_IRQ (MPIC_EXT_IRQ + MPIC_MAX_EXT)
#define MPIC_TMR_IRQ (MPIC_INT_IRQ + MPIC_MAX_INT)
#define MPIC_MSG_IRQ (MPIC_TMR_IRQ + MPIC_MAX_TMR)
#define MPIC_MSI_IRQ (MPIC_MSG_IRQ + MPIC_MAX_MSG)
#define MPIC_IPI_IRQ (MPIC_MSI_IRQ + MPIC_MAX_MSI)
#define MPIC_GLB_REG_START 0x0
#define MPIC_GLB_REG_SIZE 0x10F0
#define MPIC_TMR_REG_START 0x10F0
#define MPIC_TMR_REG_SIZE 0x220
#define MPIC_EXT_REG_START 0x10000
#define MPIC_EXT_REG_SIZE 0x180
#define MPIC_INT_REG_START 0x10200
#define MPIC_INT_REG_SIZE 0x800
#define MPIC_MSG_REG_START 0x11600
#define MPIC_MSG_REG_SIZE 0x100
#define MPIC_MSI_REG_START 0x11C00
#define MPIC_MSI_REG_SIZE 0x100
#define MPIC_CPU_REG_START 0x20000
#define MPIC_CPU_REG_SIZE 0x100 + ((MAX_CPU - 1) * 0x1000)
enum mpic_ide_bits {
IDR_EP = 31,
IDR_CI0 = 30,
IDR_CI1 = 29,
IDR_P1 = 1,
IDR_P0 = 0,
};
#else
#error "Please select which OpenPic implementation is to be emulated"
#endif
#define OPENPIC_PAGE_SIZE 4096
#define BF_WIDTH(_bits_) \
(((_bits_) + (sizeof(uint32_t) * 8) - 1) / (sizeof(uint32_t) * 8))
static inline void set_bit (uint32_t *field, int bit)
{
field[bit >> 5] |= 1 << (bit & 0x1F);
}
static inline void reset_bit (uint32_t *field, int bit)
{
field[bit >> 5] &= ~(1 << (bit & 0x1F));
}
static inline int test_bit (uint32_t *field, int bit)
{
return (field[bit >> 5] & 1 << (bit & 0x1F)) != 0;
}
static int get_current_cpu(void)
{
return cpu_single_env->cpu_index;
}
static uint32_t openpic_cpu_read_internal(void *opaque, target_phys_addr_t addr,
int idx);
static void openpic_cpu_write_internal(void *opaque, target_phys_addr_t addr,
uint32_t val, int idx);
enum {
IRQ_EXTERNAL = 0x01,
IRQ_INTERNAL = 0x02,
IRQ_TIMER = 0x04,
IRQ_SPECIAL = 0x08,
};
typedef struct IRQ_queue_t {
uint32_t queue[BF_WIDTH(MAX_IRQ)];
int next;
int priority;
} IRQ_queue_t;
typedef struct IRQ_src_t {
uint32_t ipvp; /* IRQ vector/priority register */
uint32_t ide; /* IRQ destination register */
int type;
int last_cpu;
int pending; /* TRUE if IRQ is pending */
} IRQ_src_t;
enum IPVP_bits {
IPVP_MASK = 31,
IPVP_ACTIVITY = 30,
IPVP_MODE = 29,
IPVP_POLARITY = 23,
IPVP_SENSE = 22,
};
#define IPVP_PRIORITY_MASK (0x1F << 16)
#define IPVP_PRIORITY(_ipvpr_) ((int)(((_ipvpr_) & IPVP_PRIORITY_MASK) >> 16))
#define IPVP_VECTOR_MASK ((1 << VECTOR_BITS) - 1)
#define IPVP_VECTOR(_ipvpr_) ((_ipvpr_) & IPVP_VECTOR_MASK)
typedef struct IRQ_dst_t {
uint32_t tfrr;
uint32_t pctp; /* CPU current task priority */
uint32_t pcsr; /* CPU sensitivity register */
IRQ_queue_t raised;
IRQ_queue_t servicing;
qemu_irq *irqs;
} IRQ_dst_t;
typedef struct openpic_t {
PCIDevice pci_dev;
MemoryRegion mem;
/* Global registers */
uint32_t frep; /* Feature reporting register */
uint32_t glbc; /* Global configuration register */
uint32_t micr; /* MPIC interrupt configuration register */
uint32_t veni; /* Vendor identification register */
uint32_t pint; /* Processor initialization register */
uint32_t spve; /* Spurious vector register */
uint32_t tifr; /* Timer frequency reporting register */
/* Source registers */
IRQ_src_t src[MAX_IRQ];
/* Local registers per output pin */
IRQ_dst_t dst[MAX_CPU];
int nb_cpus;
/* Timer registers */
struct {
uint32_t ticc; /* Global timer current count register */
uint32_t tibc; /* Global timer base count register */
} timers[MAX_TMR];
#if MAX_DBL > 0
/* Doorbell registers */
uint32_t dar; /* Doorbell activate register */
struct {
uint32_t dmr; /* Doorbell messaging register */
} doorbells[MAX_DBL];
#endif
#if MAX_MBX > 0
/* Mailbox registers */
struct {
uint32_t mbr; /* Mailbox register */
} mailboxes[MAX_MAILBOXES];
#endif
/* IRQ out is used when in bypass mode (not implemented) */
qemu_irq irq_out;
int max_irq;
int irq_ipi0;
int irq_tim0;
void (*reset) (void *);
void (*irq_raise) (struct openpic_t *, int, IRQ_src_t *);
} openpic_t;
static inline void IRQ_setbit (IRQ_queue_t *q, int n_IRQ)
{
set_bit(q->queue, n_IRQ);
}
static inline void IRQ_resetbit (IRQ_queue_t *q, int n_IRQ)
{
reset_bit(q->queue, n_IRQ);
}
static inline int IRQ_testbit (IRQ_queue_t *q, int n_IRQ)
{
return test_bit(q->queue, n_IRQ);
}
static void IRQ_check (openpic_t *opp, IRQ_queue_t *q)
{
int next, i;
int priority;
next = -1;
priority = -1;
for (i = 0; i < opp->max_irq; i++) {
if (IRQ_testbit(q, i)) {
DPRINTF("IRQ_check: irq %d set ipvp_pr=%d pr=%d\n",
i, IPVP_PRIORITY(opp->src[i].ipvp), priority);
if (IPVP_PRIORITY(opp->src[i].ipvp) > priority) {
next = i;
priority = IPVP_PRIORITY(opp->src[i].ipvp);
}
}
}
q->next = next;
q->priority = priority;
}
static int IRQ_get_next (openpic_t *opp, IRQ_queue_t *q)
{
if (q->next == -1) {
/* XXX: optimize */
IRQ_check(opp, q);
}
return q->next;
}
static void IRQ_local_pipe (openpic_t *opp, int n_CPU, int n_IRQ)
{
IRQ_dst_t *dst;
IRQ_src_t *src;
int priority;
dst = &opp->dst[n_CPU];
src = &opp->src[n_IRQ];
priority = IPVP_PRIORITY(src->ipvp);
if (priority <= dst->pctp) {
/* Too low priority */
DPRINTF("%s: IRQ %d has too low priority on CPU %d\n",
__func__, n_IRQ, n_CPU);
return;
}
if (IRQ_testbit(&dst->raised, n_IRQ)) {
/* Interrupt miss */
DPRINTF("%s: IRQ %d was missed on CPU %d\n",
__func__, n_IRQ, n_CPU);
return;
}
set_bit(&src->ipvp, IPVP_ACTIVITY);
IRQ_setbit(&dst->raised, n_IRQ);
if (priority < dst->raised.priority) {
/* An higher priority IRQ is already raised */
DPRINTF("%s: IRQ %d is hidden by raised IRQ %d on CPU %d\n",
__func__, n_IRQ, dst->raised.next, n_CPU);
return;
}
IRQ_get_next(opp, &dst->raised);
if (IRQ_get_next(opp, &dst->servicing) != -1 &&
priority <= dst->servicing.priority) {
DPRINTF("%s: IRQ %d is hidden by servicing IRQ %d on CPU %d\n",
__func__, n_IRQ, dst->servicing.next, n_CPU);
/* Already servicing a higher priority IRQ */
return;
}
DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n", n_CPU, n_IRQ);
opp->irq_raise(opp, n_CPU, src);
}
/* update pic state because registers for n_IRQ have changed value */
static void openpic_update_irq(openpic_t *opp, int n_IRQ)
{
IRQ_src_t *src;
int i;
src = &opp->src[n_IRQ];
if (!src->pending) {
/* no irq pending */
DPRINTF("%s: IRQ %d is not pending\n", __func__, n_IRQ);
return;
}
if (test_bit(&src->ipvp, IPVP_MASK)) {
/* Interrupt source is disabled */
DPRINTF("%s: IRQ %d is disabled\n", __func__, n_IRQ);
return;
}
if (IPVP_PRIORITY(src->ipvp) == 0) {
/* Priority set to zero */
DPRINTF("%s: IRQ %d has 0 priority\n", __func__, n_IRQ);
return;
}
if (test_bit(&src->ipvp, IPVP_ACTIVITY)) {
/* IRQ already active */
DPRINTF("%s: IRQ %d is already active\n", __func__, n_IRQ);
return;
}
if (src->ide == 0x00000000) {
/* No target */
DPRINTF("%s: IRQ %d has no target\n", __func__, n_IRQ);
return;
}
if (src->ide == (1 << src->last_cpu)) {
/* Only one CPU is allowed to receive this IRQ */
IRQ_local_pipe(opp, src->last_cpu, n_IRQ);
} else if (!test_bit(&src->ipvp, IPVP_MODE)) {
/* Directed delivery mode */
for (i = 0; i < opp->nb_cpus; i++) {
if (test_bit(&src->ide, i))
IRQ_local_pipe(opp, i, n_IRQ);
}
} else {
/* Distributed delivery mode */
for (i = src->last_cpu + 1; i != src->last_cpu; i++) {
if (i == opp->nb_cpus)
i = 0;
if (test_bit(&src->ide, i)) {
IRQ_local_pipe(opp, i, n_IRQ);
src->last_cpu = i;
break;
}
}
}
}
static void openpic_set_irq(void *opaque, int n_IRQ, int level)
{
openpic_t *opp = opaque;
IRQ_src_t *src;
src = &opp->src[n_IRQ];
DPRINTF("openpic: set irq %d = %d ipvp=%08x\n",
n_IRQ, level, src->ipvp);
if (test_bit(&src->ipvp, IPVP_SENSE)) {
/* level-sensitive irq */
src->pending = level;
if (!level)
reset_bit(&src->ipvp, IPVP_ACTIVITY);
} else {
/* edge-sensitive irq */
if (level)
src->pending = 1;
}
openpic_update_irq(opp, n_IRQ);
}
static void openpic_reset (void *opaque)
{
openpic_t *opp = (openpic_t *)opaque;
int i;
opp->glbc = 0x80000000;
/* Initialise controller registers */
opp->frep = ((OPENPIC_EXT_IRQ - 1) << 16) | ((MAX_CPU - 1) << 8) | VID;
opp->veni = VENI;
opp->pint = 0x00000000;
opp->spve = 0x000000FF;
opp->tifr = 0x003F7A00;
/* ? */
opp->micr = 0x00000000;
/* Initialise IRQ sources */
for (i = 0; i < opp->max_irq; i++) {
opp->src[i].ipvp = 0xA0000000;
opp->src[i].ide = 0x00000000;
}
/* Initialise IRQ destinations */
for (i = 0; i < MAX_CPU; i++) {
opp->dst[i].pctp = 0x0000000F;
opp->dst[i].pcsr = 0x00000000;
memset(&opp->dst[i].raised, 0, sizeof(IRQ_queue_t));
opp->dst[i].raised.next = -1;
memset(&opp->dst[i].servicing, 0, sizeof(IRQ_queue_t));
opp->dst[i].servicing.next = -1;
}
/* Initialise timers */
for (i = 0; i < MAX_TMR; i++) {
opp->timers[i].ticc = 0x00000000;
opp->timers[i].tibc = 0x80000000;
}
/* Initialise doorbells */
#if MAX_DBL > 0
opp->dar = 0x00000000;
for (i = 0; i < MAX_DBL; i++) {
opp->doorbells[i].dmr = 0x00000000;
}
#endif
/* Initialise mailboxes */
#if MAX_MBX > 0
for (i = 0; i < MAX_MBX; i++) { /* ? */
opp->mailboxes[i].mbr = 0x00000000;
}
#endif
/* Go out of RESET state */
opp->glbc = 0x00000000;
}
static inline uint32_t read_IRQreg (openpic_t *opp, int n_IRQ, uint32_t reg)
{
uint32_t retval;
switch (reg) {
case IRQ_IPVP:
retval = opp->src[n_IRQ].ipvp;
break;
case IRQ_IDE:
retval = opp->src[n_IRQ].ide;
break;
}
return retval;
}
static inline void write_IRQreg (openpic_t *opp, int n_IRQ,
uint32_t reg, uint32_t val)
{
uint32_t tmp;
switch (reg) {
case IRQ_IPVP:
/* NOTE: not fully accurate for special IRQs, but simple and
sufficient */
/* ACTIVITY bit is read-only */
opp->src[n_IRQ].ipvp =
(opp->src[n_IRQ].ipvp & 0x40000000) |
(val & 0x800F00FF);
openpic_update_irq(opp, n_IRQ);
DPRINTF("Set IPVP %d to 0x%08x -> 0x%08x\n",
n_IRQ, val, opp->src[n_IRQ].ipvp);
break;
case IRQ_IDE:
tmp = val & 0xC0000000;
tmp |= val & ((1ULL << MAX_CPU) - 1);
opp->src[n_IRQ].ide = tmp;
DPRINTF("Set IDE %d to 0x%08x\n", n_IRQ, opp->src[n_IRQ].ide);
break;
}
}
#if 0 // Code provision for Intel model
#if MAX_DBL > 0
static uint32_t read_doorbell_register (openpic_t *opp,
int n_dbl, uint32_t offset)
{
uint32_t retval;
switch (offset) {
case DBL_IPVP_OFFSET:
retval = read_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IPVP);
break;
case DBL_IDE_OFFSET:
retval = read_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IDE);
break;
case DBL_DMR_OFFSET:
retval = opp->doorbells[n_dbl].dmr;
break;
}
return retval;
}
static void write_doorbell_register (penpic_t *opp, int n_dbl,
uint32_t offset, uint32_t value)
{
switch (offset) {
case DBL_IVPR_OFFSET:
write_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IPVP, value);
break;
case DBL_IDE_OFFSET:
write_IRQreg(opp, IRQ_DBL0 + n_dbl, IRQ_IDE, value);
break;
case DBL_DMR_OFFSET:
opp->doorbells[n_dbl].dmr = value;
break;
}
}
#endif
#if MAX_MBX > 0
static uint32_t read_mailbox_register (openpic_t *opp,
int n_mbx, uint32_t offset)
{
uint32_t retval;
switch (offset) {
case MBX_MBR_OFFSET:
retval = opp->mailboxes[n_mbx].mbr;
break;
case MBX_IVPR_OFFSET:
retval = read_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IPVP);
break;
case MBX_DMR_OFFSET:
retval = read_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IDE);
break;
}
return retval;
}
static void write_mailbox_register (openpic_t *opp, int n_mbx,
uint32_t address, uint32_t value)
{
switch (offset) {
case MBX_MBR_OFFSET:
opp->mailboxes[n_mbx].mbr = value;
break;
case MBX_IVPR_OFFSET:
write_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IPVP, value);
break;
case MBX_DMR_OFFSET:
write_IRQreg(opp, IRQ_MBX0 + n_mbx, IRQ_IDE, value);
break;
}
}
#endif
#endif /* 0 : Code provision for Intel model */
static void openpic_gbl_write (void *opaque, target_phys_addr_t addr, uint32_t val)
{
openpic_t *opp = opaque;
IRQ_dst_t *dst;
int idx;
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val);
if (addr & 0xF)
return;
switch (addr) {
case 0x40:
case 0x50:
case 0x60:
case 0x70:
case 0x80:
case 0x90:
case 0xA0:
case 0xB0:
openpic_cpu_write_internal(opp, addr, val, get_current_cpu());
break;
case 0x1000: /* FREP */
break;
case 0x1020: /* GLBC */
if (val & 0x80000000 && opp->reset)
opp->reset(opp);
opp->glbc = val & ~0x80000000;
break;
case 0x1080: /* VENI */
break;
case 0x1090: /* PINT */
for (idx = 0; idx < opp->nb_cpus; idx++) {
if ((val & (1 << idx)) && !(opp->pint & (1 << idx))) {
DPRINTF("Raise OpenPIC RESET output for CPU %d\n", idx);
dst = &opp->dst[idx];
qemu_irq_raise(dst->irqs[OPENPIC_OUTPUT_RESET]);
} else if (!(val & (1 << idx)) && (opp->pint & (1 << idx))) {
DPRINTF("Lower OpenPIC RESET output for CPU %d\n", idx);
dst = &opp->dst[idx];
qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_RESET]);
}
}
opp->pint = val;
break;
case 0x10A0: /* IPI_IPVP */
case 0x10B0:
case 0x10C0:
case 0x10D0:
{
int idx;
idx = (addr - 0x10A0) >> 4;
write_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IPVP, val);
}
break;
case 0x10E0: /* SPVE */
opp->spve = val & 0x000000FF;
break;
case 0x10F0: /* TIFR */
opp->tifr = val;
break;
default:
break;
}
}
static uint32_t openpic_gbl_read (void *opaque, target_phys_addr_t addr)
{
openpic_t *opp = opaque;
uint32_t retval;
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
switch (addr) {
case 0x1000: /* FREP */
retval = opp->frep;
break;
case 0x1020: /* GLBC */
retval = opp->glbc;
break;
case 0x1080: /* VENI */
retval = opp->veni;
break;
case 0x1090: /* PINT */
retval = 0x00000000;
break;
case 0x40:
case 0x50:
case 0x60:
case 0x70:
case 0x80:
case 0x90:
case 0xA0:
case 0xB0:
retval = openpic_cpu_read_internal(opp, addr, get_current_cpu());
break;
case 0x10A0: /* IPI_IPVP */
case 0x10B0:
case 0x10C0:
case 0x10D0:
{
int idx;
idx = (addr - 0x10A0) >> 4;
retval = read_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IPVP);
}
break;
case 0x10E0: /* SPVE */
retval = opp->spve;
break;
case 0x10F0: /* TIFR */
retval = opp->tifr;
break;
default:
break;
}
DPRINTF("%s: => %08x\n", __func__, retval);
return retval;
}
static void openpic_timer_write (void *opaque, uint32_t addr, uint32_t val)
{
openpic_t *opp = opaque;
int idx;
DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
if (addr & 0xF)
return;
addr -= 0x1100;
addr &= 0xFFFF;
idx = (addr & 0xFFF0) >> 6;
addr = addr & 0x30;
switch (addr) {
case 0x00: /* TICC */
break;
case 0x10: /* TIBC */
if ((opp->timers[idx].ticc & 0x80000000) != 0 &&
(val & 0x80000000) == 0 &&
(opp->timers[idx].tibc & 0x80000000) != 0)
opp->timers[idx].ticc &= ~0x80000000;
opp->timers[idx].tibc = val;
break;
case 0x20: /* TIVP */
write_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IPVP, val);
break;
case 0x30: /* TIDE */
write_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IDE, val);
break;
}
}
static uint32_t openpic_timer_read (void *opaque, uint32_t addr)
{
openpic_t *opp = opaque;
uint32_t retval;
int idx;
DPRINTF("%s: addr %08x\n", __func__, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
addr -= 0x1100;
addr &= 0xFFFF;
idx = (addr & 0xFFF0) >> 6;
addr = addr & 0x30;
switch (addr) {
case 0x00: /* TICC */
retval = opp->timers[idx].ticc;
break;
case 0x10: /* TIBC */
retval = opp->timers[idx].tibc;
break;
case 0x20: /* TIPV */
retval = read_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IPVP);
break;
case 0x30: /* TIDE */
retval = read_IRQreg(opp, opp->irq_tim0 + idx, IRQ_IDE);
break;
}
DPRINTF("%s: => %08x\n", __func__, retval);
return retval;
}
static void openpic_src_write (void *opaque, uint32_t addr, uint32_t val)
{
openpic_t *opp = opaque;
int idx;
DPRINTF("%s: addr %08x <= %08x\n", __func__, addr, val);
if (addr & 0xF)
return;
addr = addr & 0xFFF0;
idx = addr >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
write_IRQreg(opp, idx, IRQ_IDE, val);
} else {
/* EXVP / IFEVP / IEEVP */
write_IRQreg(opp, idx, IRQ_IPVP, val);
}
}
static uint32_t openpic_src_read (void *opaque, uint32_t addr)
{
openpic_t *opp = opaque;
uint32_t retval;
int idx;
DPRINTF("%s: addr %08x\n", __func__, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
addr = addr & 0xFFF0;
idx = addr >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
retval = read_IRQreg(opp, idx, IRQ_IDE);
} else {
/* EXVP / IFEVP / IEEVP */
retval = read_IRQreg(opp, idx, IRQ_IPVP);
}
DPRINTF("%s: => %08x\n", __func__, retval);
return retval;
}
static void openpic_cpu_write_internal(void *opaque, target_phys_addr_t addr,
uint32_t val, int idx)
{
openpic_t *opp = opaque;
IRQ_src_t *src;
IRQ_dst_t *dst;
int s_IRQ, n_IRQ;
DPRINTF("%s: cpu %d addr " TARGET_FMT_plx " <= %08x\n", __func__, idx,
addr, val);
if (addr & 0xF)
return;
dst = &opp->dst[idx];
addr &= 0xFF0;
switch (addr) {
#if MAX_IPI > 0
case 0x40: /* IPIDR */
case 0x50:
case 0x60:
case 0x70:
idx = (addr - 0x40) >> 4;
/* we use IDE as mask which CPUs to deliver the IPI to still. */
write_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IDE,
opp->src[opp->irq_ipi0 + idx].ide | val);
openpic_set_irq(opp, opp->irq_ipi0 + idx, 1);
openpic_set_irq(opp, opp->irq_ipi0 + idx, 0);
break;
#endif
case 0x80: /* PCTP */
dst->pctp = val & 0x0000000F;
break;
case 0x90: /* WHOAMI */
/* Read-only register */
break;
case 0xA0: /* PIAC */
/* Read-only register */
break;
case 0xB0: /* PEOI */
DPRINTF("PEOI\n");
s_IRQ = IRQ_get_next(opp, &dst->servicing);
IRQ_resetbit(&dst->servicing, s_IRQ);
dst->servicing.next = -1;
/* Set up next servicing IRQ */
s_IRQ = IRQ_get_next(opp, &dst->servicing);
/* Check queued interrupts. */
n_IRQ = IRQ_get_next(opp, &dst->raised);
src = &opp->src[n_IRQ];
if (n_IRQ != -1 &&
(s_IRQ == -1 ||
IPVP_PRIORITY(src->ipvp) > dst->servicing.priority)) {
DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n",
idx, n_IRQ);
opp->irq_raise(opp, idx, src);
}
break;
default:
break;
}
}
static void openpic_cpu_write(void *opaque, target_phys_addr_t addr, uint32_t val)
{
openpic_cpu_write_internal(opaque, addr, val, (addr & 0x1f000) >> 12);
}
static uint32_t openpic_cpu_read_internal(void *opaque, target_phys_addr_t addr,
int idx)
{
openpic_t *opp = opaque;
IRQ_src_t *src;
IRQ_dst_t *dst;
uint32_t retval;
int n_IRQ;
DPRINTF("%s: cpu %d addr " TARGET_FMT_plx "\n", __func__, idx, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
dst = &opp->dst[idx];
addr &= 0xFF0;
switch (addr) {
case 0x80: /* PCTP */
retval = dst->pctp;
break;
case 0x90: /* WHOAMI */
retval = idx;
break;
case 0xA0: /* PIAC */
DPRINTF("Lower OpenPIC INT output\n");
qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_INT]);
n_IRQ = IRQ_get_next(opp, &dst->raised);
DPRINTF("PIAC: irq=%d\n", n_IRQ);
if (n_IRQ == -1) {
/* No more interrupt pending */
retval = IPVP_VECTOR(opp->spve);
} else {
src = &opp->src[n_IRQ];
if (!test_bit(&src->ipvp, IPVP_ACTIVITY) ||
!(IPVP_PRIORITY(src->ipvp) > dst->pctp)) {
/* - Spurious level-sensitive IRQ
* - Priorities has been changed
* and the pending IRQ isn't allowed anymore
*/
reset_bit(&src->ipvp, IPVP_ACTIVITY);
retval = IPVP_VECTOR(opp->spve);
} else {
/* IRQ enter servicing state */
IRQ_setbit(&dst->servicing, n_IRQ);
retval = IPVP_VECTOR(src->ipvp);
}
IRQ_resetbit(&dst->raised, n_IRQ);
dst->raised.next = -1;
if (!test_bit(&src->ipvp, IPVP_SENSE)) {
/* edge-sensitive IRQ */
reset_bit(&src->ipvp, IPVP_ACTIVITY);
src->pending = 0;
}
if ((n_IRQ >= opp->irq_ipi0) && (n_IRQ < (opp->irq_ipi0 + MAX_IPI))) {
src->ide &= ~(1 << idx);
if (src->ide && !test_bit(&src->ipvp, IPVP_SENSE)) {
/* trigger on CPUs that didn't know about it yet */
openpic_set_irq(opp, n_IRQ, 1);
openpic_set_irq(opp, n_IRQ, 0);
/* if all CPUs knew about it, set active bit again */
set_bit(&src->ipvp, IPVP_ACTIVITY);
}
}
}
break;
case 0xB0: /* PEOI */
retval = 0;
break;
default:
break;
}
DPRINTF("%s: => %08x\n", __func__, retval);
return retval;
}
static uint32_t openpic_cpu_read(void *opaque, target_phys_addr_t addr)
{
return openpic_cpu_read_internal(opaque, addr, (addr & 0x1f000) >> 12);
}
static void openpic_buggy_write (void *opaque,
target_phys_addr_t addr, uint32_t val)
{
printf("Invalid OPENPIC write access !\n");
}
static uint32_t openpic_buggy_read (void *opaque, target_phys_addr_t addr)
{
printf("Invalid OPENPIC read access !\n");
return -1;
}
static void openpic_writel (void *opaque,
target_phys_addr_t addr, uint32_t val)
{
openpic_t *opp = opaque;
addr &= 0x3FFFF;
DPRINTF("%s: offset %08x val: %08x\n", __func__, (int)addr, val);
if (addr < 0x1100) {
/* Global registers */
openpic_gbl_write(opp, addr, val);
} else if (addr < 0x10000) {
/* Timers registers */
openpic_timer_write(opp, addr, val);
} else if (addr < 0x20000) {
/* Source registers */
openpic_src_write(opp, addr, val);
} else {
/* CPU registers */
openpic_cpu_write(opp, addr, val);
}
}
static uint32_t openpic_readl (void *opaque,target_phys_addr_t addr)
{
openpic_t *opp = opaque;
uint32_t retval;
addr &= 0x3FFFF;
DPRINTF("%s: offset %08x\n", __func__, (int)addr);
if (addr < 0x1100) {
/* Global registers */
retval = openpic_gbl_read(opp, addr);
} else if (addr < 0x10000) {
/* Timers registers */
retval = openpic_timer_read(opp, addr);
} else if (addr < 0x20000) {
/* Source registers */
retval = openpic_src_read(opp, addr);
} else {
/* CPU registers */
retval = openpic_cpu_read(opp, addr);
}
return retval;
}
static uint64_t openpic_read(void *opaque, target_phys_addr_t addr,
unsigned size)
{
openpic_t *opp = opaque;
switch (size) {
case 4: return openpic_readl(opp, addr);
default: return openpic_buggy_read(opp, addr);
}
}
static void openpic_write(void *opaque, target_phys_addr_t addr,
uint64_t data, unsigned size)
{
openpic_t *opp = opaque;
switch (size) {
case 4: return openpic_writel(opp, addr, data);
default: return openpic_buggy_write(opp, addr, data);
}
}
static const MemoryRegionOps openpic_ops = {
.read = openpic_read,
.write = openpic_write,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void openpic_save_IRQ_queue(QEMUFile* f, IRQ_queue_t *q)
{
unsigned int i;
for (i = 0; i < BF_WIDTH(MAX_IRQ); i++)
qemu_put_be32s(f, &q->queue[i]);
qemu_put_sbe32s(f, &q->next);
qemu_put_sbe32s(f, &q->priority);
}
static void openpic_save(QEMUFile* f, void *opaque)
{
openpic_t *opp = (openpic_t *)opaque;
unsigned int i;
qemu_put_be32s(f, &opp->frep);
qemu_put_be32s(f, &opp->glbc);
qemu_put_be32s(f, &opp->micr);
qemu_put_be32s(f, &opp->veni);
qemu_put_be32s(f, &opp->pint);
qemu_put_be32s(f, &opp->spve);
qemu_put_be32s(f, &opp->tifr);
for (i = 0; i < opp->max_irq; i++) {
qemu_put_be32s(f, &opp->src[i].ipvp);
qemu_put_be32s(f, &opp->src[i].ide);
qemu_put_sbe32s(f, &opp->src[i].type);
qemu_put_sbe32s(f, &opp->src[i].last_cpu);
qemu_put_sbe32s(f, &opp->src[i].pending);
}
qemu_put_sbe32s(f, &opp->nb_cpus);
for (i = 0; i < opp->nb_cpus; i++) {
qemu_put_be32s(f, &opp->dst[i].tfrr);
qemu_put_be32s(f, &opp->dst[i].pctp);
qemu_put_be32s(f, &opp->dst[i].pcsr);
openpic_save_IRQ_queue(f, &opp->dst[i].raised);
openpic_save_IRQ_queue(f, &opp->dst[i].servicing);
}
for (i = 0; i < MAX_TMR; i++) {
qemu_put_be32s(f, &opp->timers[i].ticc);
qemu_put_be32s(f, &opp->timers[i].tibc);
}
#if MAX_DBL > 0
qemu_put_be32s(f, &opp->dar);
for (i = 0; i < MAX_DBL; i++) {
qemu_put_be32s(f, &opp->doorbells[i].dmr);
}
#endif
#if MAX_MBX > 0
for (i = 0; i < MAX_MAILBOXES; i++) {
qemu_put_be32s(f, &opp->mailboxes[i].mbr);
}
#endif
pci_device_save(&opp->pci_dev, f);
}
static void openpic_load_IRQ_queue(QEMUFile* f, IRQ_queue_t *q)
{
unsigned int i;
for (i = 0; i < BF_WIDTH(MAX_IRQ); i++)
qemu_get_be32s(f, &q->queue[i]);
qemu_get_sbe32s(f, &q->next);
qemu_get_sbe32s(f, &q->priority);
}
static int openpic_load(QEMUFile* f, void *opaque, int version_id)
{
openpic_t *opp = (openpic_t *)opaque;
unsigned int i;
if (version_id != 1)
return -EINVAL;
qemu_get_be32s(f, &opp->frep);
qemu_get_be32s(f, &opp->glbc);
qemu_get_be32s(f, &opp->micr);
qemu_get_be32s(f, &opp->veni);
qemu_get_be32s(f, &opp->pint);
qemu_get_be32s(f, &opp->spve);
qemu_get_be32s(f, &opp->tifr);
for (i = 0; i < opp->max_irq; i++) {
qemu_get_be32s(f, &opp->src[i].ipvp);
qemu_get_be32s(f, &opp->src[i].ide);
qemu_get_sbe32s(f, &opp->src[i].type);
qemu_get_sbe32s(f, &opp->src[i].last_cpu);
qemu_get_sbe32s(f, &opp->src[i].pending);
}
qemu_get_sbe32s(f, &opp->nb_cpus);
for (i = 0; i < opp->nb_cpus; i++) {
qemu_get_be32s(f, &opp->dst[i].tfrr);
qemu_get_be32s(f, &opp->dst[i].pctp);
qemu_get_be32s(f, &opp->dst[i].pcsr);
openpic_load_IRQ_queue(f, &opp->dst[i].raised);
openpic_load_IRQ_queue(f, &opp->dst[i].servicing);
}
for (i = 0; i < MAX_TMR; i++) {
qemu_get_be32s(f, &opp->timers[i].ticc);
qemu_get_be32s(f, &opp->timers[i].tibc);
}
#if MAX_DBL > 0
qemu_get_be32s(f, &opp->dar);
for (i = 0; i < MAX_DBL; i++) {
qemu_get_be32s(f, &opp->doorbells[i].dmr);
}
#endif
#if MAX_MBX > 0
for (i = 0; i < MAX_MAILBOXES; i++) {
qemu_get_be32s(f, &opp->mailboxes[i].mbr);
}
#endif
return pci_device_load(&opp->pci_dev, f);
}
static void openpic_irq_raise(openpic_t *opp, int n_CPU, IRQ_src_t *src)
{
qemu_irq_raise(opp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]);
}
qemu_irq *openpic_init (PCIBus *bus, MemoryRegion **pmem, int nb_cpus,
qemu_irq **irqs, qemu_irq irq_out)
{
openpic_t *opp;
uint8_t *pci_conf;
int i, m;
/* XXX: for now, only one CPU is supported */
if (nb_cpus != 1)
return NULL;
if (bus) {
opp = (openpic_t *)pci_register_device(bus, "OpenPIC", sizeof(openpic_t),
-1, NULL, NULL);
pci_conf = opp->pci_dev.config;
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_IBM);
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_IBM_OPENPIC2);
pci_config_set_class(pci_conf, PCI_CLASS_SYSTEM_OTHER); // FIXME?
pci_conf[0x3d] = 0x00; // no interrupt pin
memory_region_init_io(&opp->mem, &openpic_ops, opp, "openpic", 0x40000);
#if 0 // Don't implement ISU for now
opp_io_memory = cpu_register_io_memory(openpic_src_read,
openpic_src_write, NULL
DEVICE_NATIVE_ENDIAN);
cpu_register_physical_memory(isu_base, 0x20 * (EXT_IRQ + 2),
opp_io_memory);
#endif
/* Register I/O spaces */
pci_register_bar(&opp->pci_dev, 0,
PCI_BASE_ADDRESS_SPACE_MEMORY, &opp->mem);
} else {
opp = g_malloc0(sizeof(openpic_t));
memory_region_init_io(&opp->mem, &openpic_ops, opp, "openpic", 0x40000);
}
// isu_base &= 0xFFFC0000;
opp->nb_cpus = nb_cpus;
opp->max_irq = OPENPIC_MAX_IRQ;
opp->irq_ipi0 = OPENPIC_IRQ_IPI0;
opp->irq_tim0 = OPENPIC_IRQ_TIM0;
/* Set IRQ types */
for (i = 0; i < OPENPIC_EXT_IRQ; i++) {
opp->src[i].type = IRQ_EXTERNAL;
}
for (; i < OPENPIC_IRQ_TIM0; i++) {
opp->src[i].type = IRQ_SPECIAL;
}
#if MAX_IPI > 0
m = OPENPIC_IRQ_IPI0;
#else
m = OPENPIC_IRQ_DBL0;
#endif
for (; i < m; i++) {
opp->src[i].type = IRQ_TIMER;
}
for (; i < OPENPIC_MAX_IRQ; i++) {
opp->src[i].type = IRQ_INTERNAL;
}
for (i = 0; i < nb_cpus; i++)
opp->dst[i].irqs = irqs[i];
opp->irq_out = irq_out;
register_savevm(&opp->pci_dev.qdev, "openpic", 0, 2,
openpic_save, openpic_load, opp);
qemu_register_reset(openpic_reset, opp);
opp->irq_raise = openpic_irq_raise;
opp->reset = openpic_reset;
if (pmem)
*pmem = &opp->mem;
return qemu_allocate_irqs(openpic_set_irq, opp, opp->max_irq);
}
static void mpic_irq_raise(openpic_t *mpp, int n_CPU, IRQ_src_t *src)
{
int n_ci = IDR_CI0 - n_CPU;
if(test_bit(&src->ide, n_ci)) {
qemu_irq_raise(mpp->dst[n_CPU].irqs[OPENPIC_OUTPUT_CINT]);
}
else {
qemu_irq_raise(mpp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]);
}
}
static void mpic_reset (void *opaque)
{
openpic_t *mpp = (openpic_t *)opaque;
int i;
mpp->glbc = 0x80000000;
/* Initialise controller registers */
mpp->frep = 0x004f0002 | ((mpp->nb_cpus - 1) << 8);
mpp->veni = VENI;
mpp->pint = 0x00000000;
mpp->spve = 0x0000FFFF;
/* Initialise IRQ sources */
for (i = 0; i < mpp->max_irq; i++) {
mpp->src[i].ipvp = 0x80800000;
mpp->src[i].ide = 0x00000001;
}
/* Set IDE for IPIs to 0 so we don't get spurious interrupts */
for (i = mpp->irq_ipi0; i < (mpp->irq_ipi0 + MAX_IPI); i++) {
mpp->src[i].ide = 0;
}
/* Initialise IRQ destinations */
for (i = 0; i < MAX_CPU; i++) {
mpp->dst[i].pctp = 0x0000000F;
mpp->dst[i].tfrr = 0x00000000;
memset(&mpp->dst[i].raised, 0, sizeof(IRQ_queue_t));
mpp->dst[i].raised.next = -1;
memset(&mpp->dst[i].servicing, 0, sizeof(IRQ_queue_t));
mpp->dst[i].servicing.next = -1;
}
/* Initialise timers */
for (i = 0; i < MAX_TMR; i++) {
mpp->timers[i].ticc = 0x00000000;
mpp->timers[i].tibc = 0x80000000;
}
/* Go out of RESET state */
mpp->glbc = 0x00000000;
}
static void mpic_timer_write (void *opaque, target_phys_addr_t addr, uint32_t val)
{
openpic_t *mpp = opaque;
int idx, cpu;
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val);
if (addr & 0xF)
return;
addr &= 0xFFFF;
cpu = addr >> 12;
idx = (addr >> 6) & 0x3;
switch (addr & 0x30) {
case 0x00: /* gtccr */
break;
case 0x10: /* gtbcr */
if ((mpp->timers[idx].ticc & 0x80000000) != 0 &&
(val & 0x80000000) == 0 &&
(mpp->timers[idx].tibc & 0x80000000) != 0)
mpp->timers[idx].ticc &= ~0x80000000;
mpp->timers[idx].tibc = val;
break;
case 0x20: /* GTIVPR */
write_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IPVP, val);
break;
case 0x30: /* GTIDR & TFRR */
if ((addr & 0xF0) == 0xF0)
mpp->dst[cpu].tfrr = val;
else
write_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IDE, val);
break;
}
}
static uint32_t mpic_timer_read (void *opaque, target_phys_addr_t addr)
{
openpic_t *mpp = opaque;
uint32_t retval;
int idx, cpu;
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
addr &= 0xFFFF;
cpu = addr >> 12;
idx = (addr >> 6) & 0x3;
switch (addr & 0x30) {
case 0x00: /* gtccr */
retval = mpp->timers[idx].ticc;
break;
case 0x10: /* gtbcr */
retval = mpp->timers[idx].tibc;
break;
case 0x20: /* TIPV */
retval = read_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IPVP);
break;
case 0x30: /* TIDR */
if ((addr &0xF0) == 0XF0)
retval = mpp->dst[cpu].tfrr;
else
retval = read_IRQreg(mpp, MPIC_TMR_IRQ + idx, IRQ_IDE);
break;
}
DPRINTF("%s: => %08x\n", __func__, retval);
return retval;
}
static void mpic_src_ext_write (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
openpic_t *mpp = opaque;
int idx = MPIC_EXT_IRQ;
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val);
if (addr & 0xF)
return;
addr -= MPIC_EXT_REG_START & (OPENPIC_PAGE_SIZE - 1);
if (addr < MPIC_EXT_REG_SIZE) {
idx += (addr & 0xFFF0) >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
write_IRQreg(mpp, idx, IRQ_IDE, val);
} else {
/* EXVP / IFEVP / IEEVP */
write_IRQreg(mpp, idx, IRQ_IPVP, val);
}
}
}
static uint32_t mpic_src_ext_read (void *opaque, target_phys_addr_t addr)
{
openpic_t *mpp = opaque;
uint32_t retval;
int idx = MPIC_EXT_IRQ;
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
addr -= MPIC_EXT_REG_START & (OPENPIC_PAGE_SIZE - 1);
if (addr < MPIC_EXT_REG_SIZE) {
idx += (addr & 0xFFF0) >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
retval = read_IRQreg(mpp, idx, IRQ_IDE);
} else {
/* EXVP / IFEVP / IEEVP */
retval = read_IRQreg(mpp, idx, IRQ_IPVP);
}
DPRINTF("%s: => %08x\n", __func__, retval);
}
return retval;
}
static void mpic_src_int_write (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
openpic_t *mpp = opaque;
int idx = MPIC_INT_IRQ;
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val);
if (addr & 0xF)
return;
addr -= MPIC_INT_REG_START & (OPENPIC_PAGE_SIZE - 1);
if (addr < MPIC_INT_REG_SIZE) {
idx += (addr & 0xFFF0) >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
write_IRQreg(mpp, idx, IRQ_IDE, val);
} else {
/* EXVP / IFEVP / IEEVP */
write_IRQreg(mpp, idx, IRQ_IPVP, val);
}
}
}
static uint32_t mpic_src_int_read (void *opaque, target_phys_addr_t addr)
{
openpic_t *mpp = opaque;
uint32_t retval;
int idx = MPIC_INT_IRQ;
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
addr -= MPIC_INT_REG_START & (OPENPIC_PAGE_SIZE - 1);
if (addr < MPIC_INT_REG_SIZE) {
idx += (addr & 0xFFF0) >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
retval = read_IRQreg(mpp, idx, IRQ_IDE);
} else {
/* EXVP / IFEVP / IEEVP */
retval = read_IRQreg(mpp, idx, IRQ_IPVP);
}
DPRINTF("%s: => %08x\n", __func__, retval);
}
return retval;
}
static void mpic_src_msg_write (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
openpic_t *mpp = opaque;
int idx = MPIC_MSG_IRQ;
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val);
if (addr & 0xF)
return;
addr -= MPIC_MSG_REG_START & (OPENPIC_PAGE_SIZE - 1);
if (addr < MPIC_MSG_REG_SIZE) {
idx += (addr & 0xFFF0) >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
write_IRQreg(mpp, idx, IRQ_IDE, val);
} else {
/* EXVP / IFEVP / IEEVP */
write_IRQreg(mpp, idx, IRQ_IPVP, val);
}
}
}
static uint32_t mpic_src_msg_read (void *opaque, target_phys_addr_t addr)
{
openpic_t *mpp = opaque;
uint32_t retval;
int idx = MPIC_MSG_IRQ;
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
addr -= MPIC_MSG_REG_START & (OPENPIC_PAGE_SIZE - 1);
if (addr < MPIC_MSG_REG_SIZE) {
idx += (addr & 0xFFF0) >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
retval = read_IRQreg(mpp, idx, IRQ_IDE);
} else {
/* EXVP / IFEVP / IEEVP */
retval = read_IRQreg(mpp, idx, IRQ_IPVP);
}
DPRINTF("%s: => %08x\n", __func__, retval);
}
return retval;
}
static void mpic_src_msi_write (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
openpic_t *mpp = opaque;
int idx = MPIC_MSI_IRQ;
DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val);
if (addr & 0xF)
return;
addr -= MPIC_MSI_REG_START & (OPENPIC_PAGE_SIZE - 1);
if (addr < MPIC_MSI_REG_SIZE) {
idx += (addr & 0xFFF0) >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
write_IRQreg(mpp, idx, IRQ_IDE, val);
} else {
/* EXVP / IFEVP / IEEVP */
write_IRQreg(mpp, idx, IRQ_IPVP, val);
}
}
}
static uint32_t mpic_src_msi_read (void *opaque, target_phys_addr_t addr)
{
openpic_t *mpp = opaque;
uint32_t retval;
int idx = MPIC_MSI_IRQ;
DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
retval = 0xFFFFFFFF;
if (addr & 0xF)
return retval;
addr -= MPIC_MSI_REG_START & (OPENPIC_PAGE_SIZE - 1);
if (addr < MPIC_MSI_REG_SIZE) {
idx += (addr & 0xFFF0) >> 5;
if (addr & 0x10) {
/* EXDE / IFEDE / IEEDE */
retval = read_IRQreg(mpp, idx, IRQ_IDE);
} else {
/* EXVP / IFEVP / IEEVP */
retval = read_IRQreg(mpp, idx, IRQ_IPVP);
}
DPRINTF("%s: => %08x\n", __func__, retval);
}
return retval;
}
static CPUWriteMemoryFunc * const mpic_glb_write[] = {
&openpic_buggy_write,
&openpic_buggy_write,
&openpic_gbl_write,
};
static CPUReadMemoryFunc * const mpic_glb_read[] = {
&openpic_buggy_read,
&openpic_buggy_read,
&openpic_gbl_read,
};
static CPUWriteMemoryFunc * const mpic_tmr_write[] = {
&openpic_buggy_write,
&openpic_buggy_write,
&mpic_timer_write,
};
static CPUReadMemoryFunc * const mpic_tmr_read[] = {
&openpic_buggy_read,
&openpic_buggy_read,
&mpic_timer_read,
};
static CPUWriteMemoryFunc * const mpic_cpu_write[] = {
&openpic_buggy_write,
&openpic_buggy_write,
&openpic_cpu_write,
};
static CPUReadMemoryFunc * const mpic_cpu_read[] = {
&openpic_buggy_read,
&openpic_buggy_read,
&openpic_cpu_read,
};
static CPUWriteMemoryFunc * const mpic_ext_write[] = {
&openpic_buggy_write,
&openpic_buggy_write,
&mpic_src_ext_write,
};
static CPUReadMemoryFunc * const mpic_ext_read[] = {
&openpic_buggy_read,
&openpic_buggy_read,
&mpic_src_ext_read,
};
static CPUWriteMemoryFunc * const mpic_int_write[] = {
&openpic_buggy_write,
&openpic_buggy_write,
&mpic_src_int_write,
};
static CPUReadMemoryFunc * const mpic_int_read[] = {
&openpic_buggy_read,
&openpic_buggy_read,
&mpic_src_int_read,
};
static CPUWriteMemoryFunc * const mpic_msg_write[] = {
&openpic_buggy_write,
&openpic_buggy_write,
&mpic_src_msg_write,
};
static CPUReadMemoryFunc * const mpic_msg_read[] = {
&openpic_buggy_read,
&openpic_buggy_read,
&mpic_src_msg_read,
};
static CPUWriteMemoryFunc * const mpic_msi_write[] = {
&openpic_buggy_write,
&openpic_buggy_write,
&mpic_src_msi_write,
};
static CPUReadMemoryFunc * const mpic_msi_read[] = {
&openpic_buggy_read,
&openpic_buggy_read,
&mpic_src_msi_read,
};
qemu_irq *mpic_init (target_phys_addr_t base, int nb_cpus,
qemu_irq **irqs, qemu_irq irq_out)
{
openpic_t *mpp;
int i;
struct {
CPUReadMemoryFunc * const *read;
CPUWriteMemoryFunc * const *write;
target_phys_addr_t start_addr;
ram_addr_t size;
} const list[] = {
{mpic_glb_read, mpic_glb_write, MPIC_GLB_REG_START, MPIC_GLB_REG_SIZE},
{mpic_tmr_read, mpic_tmr_write, MPIC_TMR_REG_START, MPIC_TMR_REG_SIZE},
{mpic_ext_read, mpic_ext_write, MPIC_EXT_REG_START, MPIC_EXT_REG_SIZE},
{mpic_int_read, mpic_int_write, MPIC_INT_REG_START, MPIC_INT_REG_SIZE},
{mpic_msg_read, mpic_msg_write, MPIC_MSG_REG_START, MPIC_MSG_REG_SIZE},
{mpic_msi_read, mpic_msi_write, MPIC_MSI_REG_START, MPIC_MSI_REG_SIZE},
{mpic_cpu_read, mpic_cpu_write, MPIC_CPU_REG_START, MPIC_CPU_REG_SIZE},
};
mpp = g_malloc0(sizeof(openpic_t));
for (i = 0; i < sizeof(list)/sizeof(list[0]); i++) {
int mem_index;
mem_index = cpu_register_io_memory(list[i].read, list[i].write, mpp,
DEVICE_BIG_ENDIAN);
if (mem_index < 0) {
goto free;
}
cpu_register_physical_memory(base + list[i].start_addr,
list[i].size, mem_index);
}
mpp->nb_cpus = nb_cpus;
mpp->max_irq = MPIC_MAX_IRQ;
mpp->irq_ipi0 = MPIC_IPI_IRQ;
mpp->irq_tim0 = MPIC_TMR_IRQ;
for (i = 0; i < nb_cpus; i++)
mpp->dst[i].irqs = irqs[i];
mpp->irq_out = irq_out;
mpp->irq_raise = mpic_irq_raise;
mpp->reset = mpic_reset;
register_savevm(NULL, "mpic", 0, 2, openpic_save, openpic_load, mpp);
qemu_register_reset(mpic_reset, mpp);
return qemu_allocate_irqs(openpic_set_irq, mpp, mpp->max_irq);
free:
g_free(mpp);
return NULL;
}
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