| /* |
| * OpenPIC emulation |
| * |
| * Copyright (c) 2004 Jocelyn Mayer |
| * |
| * 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 0 |
| |
| #define VID (0x00000000) |
| |
| #elif defined(USE_MPCxxx) |
| |
| #define MAX_CPU 2 |
| #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 |
| |
| enum mpic_ide_bits { |
| IDR_EP = 0, |
| IDR_CI0 = 1, |
| IDR_CI1 = 2, |
| IDR_P1 = 30, |
| IDR_P0 = 31, |
| }; |
| |
| #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; |
| } |
| |
| 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; |
| int mem_index; |
| /* 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 & ((1 << 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; |
| addr &= 0xFF; |
| switch (addr) { |
| case 0x00: /* FREP */ |
| break; |
| case 0x20: /* GLBC */ |
| if (val & 0x80000000 && opp->reset) |
| opp->reset(opp); |
| opp->glbc = val & ~0x80000000; |
| break; |
| case 0x80: /* VENI */ |
| break; |
| case 0x90: /* 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; |
| #if MAX_IPI > 0 |
| case 0xA0: /* IPI_IPVP */ |
| case 0xB0: |
| case 0xC0: |
| case 0xD0: |
| { |
| int idx; |
| idx = (addr - 0xA0) >> 4; |
| write_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IPVP, val); |
| } |
| break; |
| #endif |
| case 0xE0: /* SPVE */ |
| opp->spve = val & 0x000000FF; |
| break; |
| case 0xF0: /* 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; |
| addr &= 0xFF; |
| switch (addr) { |
| case 0x00: /* FREP */ |
| retval = opp->frep; |
| break; |
| case 0x20: /* GLBC */ |
| retval = opp->glbc; |
| break; |
| case 0x80: /* VENI */ |
| retval = opp->veni; |
| break; |
| case 0x90: /* PINT */ |
| retval = 0x00000000; |
| break; |
| #if MAX_IPI > 0 |
| case 0xA0: /* IPI_IPVP */ |
| case 0xB0: |
| case 0xC0: |
| case 0xD0: |
| { |
| int idx; |
| idx = (addr - 0xA0) >> 4; |
| retval = read_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IPVP); |
| } |
| break; |
| #endif |
| case 0xE0: /* SPVE */ |
| retval = opp->spve; |
| break; |
| case 0xF0: /* 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 (void *opaque, target_phys_addr_t addr, uint32_t val) |
| { |
| openpic_t *opp = opaque; |
| IRQ_src_t *src; |
| IRQ_dst_t *dst; |
| int idx, s_IRQ, n_IRQ; |
| |
| DPRINTF("%s: addr " TARGET_FMT_plx " <= %08x\n", __func__, addr, val); |
| if (addr & 0xF) |
| return; |
| addr &= 0x1FFF0; |
| idx = addr / 0x1000; |
| dst = &opp->dst[idx]; |
| addr &= 0xFF0; |
| switch (addr) { |
| #if MAX_IPI > 0 |
| case 0x40: /* PIPD */ |
| case 0x50: |
| case 0x60: |
| case 0x70: |
| idx = (addr - 0x40) >> 4; |
| write_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_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 uint32_t openpic_cpu_read (void *opaque, target_phys_addr_t addr) |
| { |
| openpic_t *opp = opaque; |
| IRQ_src_t *src; |
| IRQ_dst_t *dst; |
| uint32_t retval; |
| int idx, n_IRQ; |
| |
| DPRINTF("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| retval = 0xFFFFFFFF; |
| if (addr & 0xF) |
| return retval; |
| addr &= 0x1FFF0; |
| idx = addr / 0x1000; |
| 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; |
| } |
| } |
| break; |
| case 0xB0: /* PEOI */ |
| retval = 0; |
| break; |
| #if MAX_IPI > 0 |
| case 0x40: /* IDE */ |
| case 0x50: |
| idx = (addr - 0x40) >> 4; |
| retval = read_IRQreg(opp, opp->irq_ipi0 + idx, IRQ_IDE); |
| break; |
| #endif |
| default: |
| break; |
| } |
| DPRINTF("%s: => %08x\n", __func__, retval); |
| |
| return retval; |
| } |
| |
| 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 CPUWriteMemoryFunc * const openpic_write[] = { |
| &openpic_buggy_write, |
| &openpic_buggy_write, |
| &openpic_writel, |
| }; |
| |
| static CPUReadMemoryFunc * const openpic_read[] = { |
| &openpic_buggy_read, |
| &openpic_buggy_read, |
| &openpic_readl, |
| }; |
| |
| static void openpic_map(PCIDevice *pci_dev, int region_num, |
| pcibus_t addr, pcibus_t size, int type) |
| { |
| openpic_t *opp; |
| |
| DPRINTF("Map OpenPIC\n"); |
| opp = (openpic_t *)pci_dev; |
| /* Global registers */ |
| DPRINTF("Register OPENPIC gbl %08x => %08x\n", |
| addr + 0x1000, addr + 0x1000 + 0x100); |
| /* Timer registers */ |
| DPRINTF("Register OPENPIC timer %08x => %08x\n", |
| addr + 0x1100, addr + 0x1100 + 0x40 * MAX_TMR); |
| /* Interrupt source registers */ |
| DPRINTF("Register OPENPIC src %08x => %08x\n", |
| addr + 0x10000, addr + 0x10000 + 0x20 * (OPENPIC_EXT_IRQ + 2)); |
| /* Per CPU registers */ |
| DPRINTF("Register OPENPIC dst %08x => %08x\n", |
| addr + 0x20000, addr + 0x20000 + 0x1000 * MAX_CPU); |
| cpu_register_physical_memory(addr, 0x40000, opp->mem_index); |
| #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 |
| } |
| |
| 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, int *pmem_index, 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 |
| |
| /* Register I/O spaces */ |
| pci_register_bar(&opp->pci_dev, 0, 0x40000, |
| PCI_BASE_ADDRESS_SPACE_MEMORY, &openpic_map); |
| } else { |
| opp = qemu_mallocz(sizeof(openpic_t)); |
| } |
| opp->mem_index = cpu_register_io_memory(openpic_read, openpic_write, opp, |
| DEVICE_LITTLE_ENDIAN); |
| |
| // 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_index) |
| *pmem_index = opp->mem_index; |
| |
| 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->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; |
| } |
| /* 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}, |
| }; |
| |
| /* XXX: for now, only one CPU is supported */ |
| if (nb_cpus != 1) |
| return NULL; |
| |
| mpp = qemu_mallocz(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: |
| qemu_free(mpp); |
| return NULL; |
| } |
