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Diffstat (limited to 'src/hw/intc/openpic.c')
| -rw-r--r-- | src/hw/intc/openpic.c | 1662 |
1 files changed, 1662 insertions, 0 deletions
diff --git a/src/hw/intc/openpic.c b/src/hw/intc/openpic.c new file mode 100644 index 0000000..bfcf155 --- /dev/null +++ b/src/hw/intc/openpic.c @@ -0,0 +1,1662 @@ +/* + * 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/hw.h" +#include "hw/ppc/mac.h" +#include "hw/pci/pci.h" +#include "hw/ppc/openpic.h" +#include "hw/ppc/ppc_e500.h" +#include "hw/sysbus.h" +#include "hw/pci/msi.h" +#include "qemu/bitops.h" +#include "qapi/qmp/qerror.h" + +//#define DEBUG_OPENPIC + +#ifdef DEBUG_OPENPIC +static const int debug_openpic = 1; +#else +static const int debug_openpic = 0; +#endif + +#define DPRINTF(fmt, ...) do { \ + if (debug_openpic) { \ + printf(fmt , ## __VA_ARGS__); \ + } \ + } while (0) + +#define MAX_CPU 32 +#define MAX_MSI 8 +#define VID 0x03 /* MPIC version ID */ + +/* OpenPIC capability flags */ +#define OPENPIC_FLAG_IDR_CRIT (1 << 0) +#define OPENPIC_FLAG_ILR (2 << 0) + +/* OpenPIC address map */ +#define OPENPIC_GLB_REG_START 0x0 +#define OPENPIC_GLB_REG_SIZE 0x10F0 +#define OPENPIC_TMR_REG_START 0x10F0 +#define OPENPIC_TMR_REG_SIZE 0x220 +#define OPENPIC_MSI_REG_START 0x1600 +#define OPENPIC_MSI_REG_SIZE 0x200 +#define OPENPIC_SUMMARY_REG_START 0x3800 +#define OPENPIC_SUMMARY_REG_SIZE 0x800 +#define OPENPIC_SRC_REG_START 0x10000 +#define OPENPIC_SRC_REG_SIZE (OPENPIC_MAX_SRC * 0x20) +#define OPENPIC_CPU_REG_START 0x20000 +#define OPENPIC_CPU_REG_SIZE 0x100 + ((MAX_CPU - 1) * 0x1000) + +/* Raven */ +#define RAVEN_MAX_CPU 2 +#define RAVEN_MAX_EXT 48 +#define RAVEN_MAX_IRQ 64 +#define RAVEN_MAX_TMR OPENPIC_MAX_TMR +#define RAVEN_MAX_IPI OPENPIC_MAX_IPI + +/* Interrupt definitions */ +#define RAVEN_FE_IRQ (RAVEN_MAX_EXT) /* Internal functional IRQ */ +#define RAVEN_ERR_IRQ (RAVEN_MAX_EXT + 1) /* Error IRQ */ +#define RAVEN_TMR_IRQ (RAVEN_MAX_EXT + 2) /* First timer IRQ */ +#define RAVEN_IPI_IRQ (RAVEN_TMR_IRQ + RAVEN_MAX_TMR) /* First IPI IRQ */ +/* First doorbell IRQ */ +#define RAVEN_DBL_IRQ (RAVEN_IPI_IRQ + (RAVEN_MAX_CPU * RAVEN_MAX_IPI)) + +typedef struct FslMpicInfo { + int max_ext; +} FslMpicInfo; + +static FslMpicInfo fsl_mpic_20 = { + .max_ext = 12, +}; + +static FslMpicInfo fsl_mpic_42 = { + .max_ext = 12, +}; + +#define FRR_NIRQ_SHIFT 16 +#define FRR_NCPU_SHIFT 8 +#define FRR_VID_SHIFT 0 + +#define VID_REVISION_1_2 2 +#define VID_REVISION_1_3 3 + +#define VIR_GENERIC 0x00000000 /* Generic Vendor ID */ + +#define GCR_RESET 0x80000000 +#define GCR_MODE_PASS 0x00000000 +#define GCR_MODE_MIXED 0x20000000 +#define GCR_MODE_PROXY 0x60000000 + +#define TBCR_CI 0x80000000 /* count inhibit */ +#define TCCR_TOG 0x80000000 /* toggles when decrement to zero */ + +#define IDR_EP_SHIFT 31 +#define IDR_EP_MASK (1U << IDR_EP_SHIFT) +#define IDR_CI0_SHIFT 30 +#define IDR_CI1_SHIFT 29 +#define IDR_P1_SHIFT 1 +#define IDR_P0_SHIFT 0 + +#define ILR_INTTGT_MASK 0x000000ff +#define ILR_INTTGT_INT 0x00 +#define ILR_INTTGT_CINT 0x01 /* critical */ +#define ILR_INTTGT_MCP 0x02 /* machine check */ + +/* The currently supported INTTGT values happen to be the same as QEMU's + * openpic output codes, but don't depend on this. The output codes + * could change (unlikely, but...) or support could be added for + * more INTTGT values. + */ +static const int inttgt_output[][2] = { + { ILR_INTTGT_INT, OPENPIC_OUTPUT_INT }, + { ILR_INTTGT_CINT, OPENPIC_OUTPUT_CINT }, + { ILR_INTTGT_MCP, OPENPIC_OUTPUT_MCK }, +}; + +static int inttgt_to_output(int inttgt) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(inttgt_output); i++) { + if (inttgt_output[i][0] == inttgt) { + return inttgt_output[i][1]; + } + } + + fprintf(stderr, "%s: unsupported inttgt %d\n", __func__, inttgt); + return OPENPIC_OUTPUT_INT; +} + +static int output_to_inttgt(int output) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(inttgt_output); i++) { + if (inttgt_output[i][1] == output) { + return inttgt_output[i][0]; + } + } + + abort(); +} + +#define MSIIR_OFFSET 0x140 +#define MSIIR_SRS_SHIFT 29 +#define MSIIR_SRS_MASK (0x7 << MSIIR_SRS_SHIFT) +#define MSIIR_IBS_SHIFT 24 +#define MSIIR_IBS_MASK (0x1f << MSIIR_IBS_SHIFT) + +static int get_current_cpu(void) +{ + if (!current_cpu) { + return -1; + } + + return current_cpu->cpu_index; +} + +static uint32_t openpic_cpu_read_internal(void *opaque, hwaddr addr, + int idx); +static void openpic_cpu_write_internal(void *opaque, hwaddr addr, + uint32_t val, int idx); +static void openpic_reset(DeviceState *d); + +typedef enum IRQType { + IRQ_TYPE_NORMAL = 0, + IRQ_TYPE_FSLINT, /* FSL internal interrupt -- level only */ + IRQ_TYPE_FSLSPECIAL, /* FSL timer/IPI interrupt, edge, no polarity */ +} IRQType; + +/* Round up to the nearest 64 IRQs so that the queue length + * won't change when moving between 32 and 64 bit hosts. + */ +#define IRQQUEUE_SIZE_BITS ((OPENPIC_MAX_IRQ + 63) & ~63) + +typedef struct IRQQueue { + unsigned long *queue; + int32_t queue_size; /* Only used for VMSTATE_BITMAP */ + int next; + int priority; +} IRQQueue; + +typedef struct IRQSource { + uint32_t ivpr; /* IRQ vector/priority register */ + uint32_t idr; /* IRQ destination register */ + uint32_t destmask; /* bitmap of CPU destinations */ + int last_cpu; + int output; /* IRQ level, e.g. OPENPIC_OUTPUT_INT */ + int pending; /* TRUE if IRQ is pending */ + IRQType type; + bool level:1; /* level-triggered */ + bool nomask:1; /* critical interrupts ignore mask on some FSL MPICs */ +} IRQSource; + +#define IVPR_MASK_SHIFT 31 +#define IVPR_MASK_MASK (1U << IVPR_MASK_SHIFT) +#define IVPR_ACTIVITY_SHIFT 30 +#define IVPR_ACTIVITY_MASK (1U << IVPR_ACTIVITY_SHIFT) +#define IVPR_MODE_SHIFT 29 +#define IVPR_MODE_MASK (1U << IVPR_MODE_SHIFT) +#define IVPR_POLARITY_SHIFT 23 +#define IVPR_POLARITY_MASK (1U << IVPR_POLARITY_SHIFT) +#define IVPR_SENSE_SHIFT 22 +#define IVPR_SENSE_MASK (1U << IVPR_SENSE_SHIFT) + +#define IVPR_PRIORITY_MASK (0xFU << 16) +#define IVPR_PRIORITY(_ivprr_) ((int)(((_ivprr_) & IVPR_PRIORITY_MASK) >> 16)) +#define IVPR_VECTOR(opp, _ivprr_) ((_ivprr_) & (opp)->vector_mask) + +/* IDR[EP/CI] are only for FSL MPIC prior to v4.0 */ +#define IDR_EP 0x80000000 /* external pin */ +#define IDR_CI 0x40000000 /* critical interrupt */ + +typedef struct OpenPICTimer { + uint32_t tccr; /* Global timer current count register */ + uint32_t tbcr; /* Global timer base count register */ +} OpenPICTimer; + +typedef struct OpenPICMSI { + uint32_t msir; /* Shared Message Signaled Interrupt Register */ +} OpenPICMSI; + +typedef struct IRQDest { + int32_t ctpr; /* CPU current task priority */ + IRQQueue raised; + IRQQueue servicing; + qemu_irq *irqs; + + /* Count of IRQ sources asserting on non-INT outputs */ + uint32_t outputs_active[OPENPIC_OUTPUT_NB]; +} IRQDest; + +#define OPENPIC(obj) OBJECT_CHECK(OpenPICState, (obj), TYPE_OPENPIC) + +typedef struct OpenPICState { + /*< private >*/ + SysBusDevice parent_obj; + /*< public >*/ + + MemoryRegion mem; + + /* Behavior control */ + FslMpicInfo *fsl; + uint32_t model; + uint32_t flags; + uint32_t nb_irqs; + uint32_t vid; + uint32_t vir; /* Vendor identification register */ + uint32_t vector_mask; + uint32_t tfrr_reset; + uint32_t ivpr_reset; + uint32_t idr_reset; + uint32_t brr1; + uint32_t mpic_mode_mask; + + /* Sub-regions */ + MemoryRegion sub_io_mem[6]; + + /* Global registers */ + uint32_t frr; /* Feature reporting register */ + uint32_t gcr; /* Global configuration register */ + uint32_t pir; /* Processor initialization register */ + uint32_t spve; /* Spurious vector register */ + uint32_t tfrr; /* Timer frequency reporting register */ + /* Source registers */ + IRQSource src[OPENPIC_MAX_IRQ]; + /* Local registers per output pin */ + IRQDest dst[MAX_CPU]; + uint32_t nb_cpus; + /* Timer registers */ + OpenPICTimer timers[OPENPIC_MAX_TMR]; + /* Shared MSI registers */ + OpenPICMSI msi[MAX_MSI]; + uint32_t max_irq; + uint32_t irq_ipi0; + uint32_t irq_tim0; + uint32_t irq_msi; +} OpenPICState; + +static inline void IRQ_setbit(IRQQueue *q, int n_IRQ) +{ + set_bit(n_IRQ, q->queue); +} + +static inline void IRQ_resetbit(IRQQueue *q, int n_IRQ) +{ + clear_bit(n_IRQ, q->queue); +} + +static void IRQ_check(OpenPICState *opp, IRQQueue *q) +{ + int irq = -1; + int next = -1; + int priority = -1; + + for (;;) { + irq = find_next_bit(q->queue, opp->max_irq, irq + 1); + if (irq == opp->max_irq) { + break; + } + + DPRINTF("IRQ_check: irq %d set ivpr_pr=%d pr=%d\n", + irq, IVPR_PRIORITY(opp->src[irq].ivpr), priority); + + if (IVPR_PRIORITY(opp->src[irq].ivpr) > priority) { + next = irq; + priority = IVPR_PRIORITY(opp->src[irq].ivpr); + } + } + + q->next = next; + q->priority = priority; +} + +static int IRQ_get_next(OpenPICState *opp, IRQQueue *q) +{ + /* XXX: optimize */ + IRQ_check(opp, q); + + return q->next; +} + +static void IRQ_local_pipe(OpenPICState *opp, int n_CPU, int n_IRQ, + bool active, bool was_active) +{ + IRQDest *dst; + IRQSource *src; + int priority; + + dst = &opp->dst[n_CPU]; + src = &opp->src[n_IRQ]; + + DPRINTF("%s: IRQ %d active %d was %d\n", + __func__, n_IRQ, active, was_active); + + if (src->output != OPENPIC_OUTPUT_INT) { + DPRINTF("%s: output %d irq %d active %d was %d count %d\n", + __func__, src->output, n_IRQ, active, was_active, + dst->outputs_active[src->output]); + + /* On Freescale MPIC, critical interrupts ignore priority, + * IACK, EOI, etc. Before MPIC v4.1 they also ignore + * masking. + */ + if (active) { + if (!was_active && dst->outputs_active[src->output]++ == 0) { + DPRINTF("%s: Raise OpenPIC output %d cpu %d irq %d\n", + __func__, src->output, n_CPU, n_IRQ); + qemu_irq_raise(dst->irqs[src->output]); + } + } else { + if (was_active && --dst->outputs_active[src->output] == 0) { + DPRINTF("%s: Lower OpenPIC output %d cpu %d irq %d\n", + __func__, src->output, n_CPU, n_IRQ); + qemu_irq_lower(dst->irqs[src->output]); + } + } + + return; + } + + priority = IVPR_PRIORITY(src->ivpr); + + /* Even if the interrupt doesn't have enough priority, + * it is still raised, in case ctpr is lowered later. + */ + if (active) { + IRQ_setbit(&dst->raised, n_IRQ); + } else { + IRQ_resetbit(&dst->raised, n_IRQ); + } + + IRQ_check(opp, &dst->raised); + + if (active && priority <= dst->ctpr) { + DPRINTF("%s: IRQ %d priority %d too low for ctpr %d on CPU %d\n", + __func__, n_IRQ, priority, dst->ctpr, n_CPU); + active = 0; + } + + if (active) { + if (IRQ_get_next(opp, &dst->servicing) >= 0 && + 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); + } else { + DPRINTF("%s: Raise OpenPIC INT output cpu %d irq %d/%d\n", + __func__, n_CPU, n_IRQ, dst->raised.next); + qemu_irq_raise(opp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]); + } + } else { + IRQ_get_next(opp, &dst->servicing); + if (dst->raised.priority > dst->ctpr && + dst->raised.priority > dst->servicing.priority) { + DPRINTF("%s: IRQ %d inactive, IRQ %d prio %d above %d/%d, CPU %d\n", + __func__, n_IRQ, dst->raised.next, dst->raised.priority, + dst->ctpr, dst->servicing.priority, n_CPU); + /* IRQ line stays asserted */ + } else { + DPRINTF("%s: IRQ %d inactive, current prio %d/%d, CPU %d\n", + __func__, n_IRQ, dst->ctpr, dst->servicing.priority, n_CPU); + qemu_irq_lower(opp->dst[n_CPU].irqs[OPENPIC_OUTPUT_INT]); + } + } +} + +/* update pic state because registers for n_IRQ have changed value */ +static void openpic_update_irq(OpenPICState *opp, int n_IRQ) +{ + IRQSource *src; + bool active, was_active; + int i; + + src = &opp->src[n_IRQ]; + active = src->pending; + + if ((src->ivpr & IVPR_MASK_MASK) && !src->nomask) { + /* Interrupt source is disabled */ + DPRINTF("%s: IRQ %d is disabled\n", __func__, n_IRQ); + active = false; + } + + was_active = !!(src->ivpr & IVPR_ACTIVITY_MASK); + + /* + * We don't have a similar check for already-active because + * ctpr may have changed and we need to withdraw the interrupt. + */ + if (!active && !was_active) { + DPRINTF("%s: IRQ %d is already inactive\n", __func__, n_IRQ); + return; + } + + if (active) { + src->ivpr |= IVPR_ACTIVITY_MASK; + } else { + src->ivpr &= ~IVPR_ACTIVITY_MASK; + } + + if (src->destmask == 0) { + /* No target */ + DPRINTF("%s: IRQ %d has no target\n", __func__, n_IRQ); + return; + } + + if (src->destmask == (1 << src->last_cpu)) { + /* Only one CPU is allowed to receive this IRQ */ + IRQ_local_pipe(opp, src->last_cpu, n_IRQ, active, was_active); + } else if (!(src->ivpr & IVPR_MODE_MASK)) { + /* Directed delivery mode */ + for (i = 0; i < opp->nb_cpus; i++) { + if (src->destmask & (1 << i)) { + IRQ_local_pipe(opp, i, n_IRQ, active, was_active); + } + } + } else { + /* Distributed delivery mode */ + for (i = src->last_cpu + 1; i != src->last_cpu; i++) { + if (i == opp->nb_cpus) { + i = 0; + } + if (src->destmask & (1 << i)) { + IRQ_local_pipe(opp, i, n_IRQ, active, was_active); + src->last_cpu = i; + break; + } + } + } +} + +static void openpic_set_irq(void *opaque, int n_IRQ, int level) +{ + OpenPICState *opp = opaque; + IRQSource *src; + + if (n_IRQ >= OPENPIC_MAX_IRQ) { + fprintf(stderr, "%s: IRQ %d out of range\n", __func__, n_IRQ); + abort(); + } + + src = &opp->src[n_IRQ]; + DPRINTF("openpic: set irq %d = %d ivpr=0x%08x\n", + n_IRQ, level, src->ivpr); + if (src->level) { + /* level-sensitive irq */ + src->pending = level; + openpic_update_irq(opp, n_IRQ); + } else { + /* edge-sensitive irq */ + if (level) { + src->pending = 1; + openpic_update_irq(opp, n_IRQ); + } + + if (src->output != OPENPIC_OUTPUT_INT) { + /* Edge-triggered interrupts shouldn't be used + * with non-INT delivery, but just in case, + * try to make it do something sane rather than + * cause an interrupt storm. This is close to + * what you'd probably see happen in real hardware. + */ + src->pending = 0; + openpic_update_irq(opp, n_IRQ); + } + } +} + +static inline uint32_t read_IRQreg_idr(OpenPICState *opp, int n_IRQ) +{ + return opp->src[n_IRQ].idr; +} + +static inline uint32_t read_IRQreg_ilr(OpenPICState *opp, int n_IRQ) +{ + if (opp->flags & OPENPIC_FLAG_ILR) { + return output_to_inttgt(opp->src[n_IRQ].output); + } + + return 0xffffffff; +} + +static inline uint32_t read_IRQreg_ivpr(OpenPICState *opp, int n_IRQ) +{ + return opp->src[n_IRQ].ivpr; +} + +static inline void write_IRQreg_idr(OpenPICState *opp, int n_IRQ, uint32_t val) +{ + IRQSource *src = &opp->src[n_IRQ]; + uint32_t normal_mask = (1UL << opp->nb_cpus) - 1; + uint32_t crit_mask = 0; + uint32_t mask = normal_mask; + int crit_shift = IDR_EP_SHIFT - opp->nb_cpus; + int i; + + if (opp->flags & OPENPIC_FLAG_IDR_CRIT) { + crit_mask = mask << crit_shift; + mask |= crit_mask | IDR_EP; + } + + src->idr = val & mask; + DPRINTF("Set IDR %d to 0x%08x\n", n_IRQ, src->idr); + + if (opp->flags & OPENPIC_FLAG_IDR_CRIT) { + if (src->idr & crit_mask) { + if (src->idr & normal_mask) { + DPRINTF("%s: IRQ configured for multiple output types, using " + "critical\n", __func__); + } + + src->output = OPENPIC_OUTPUT_CINT; + src->nomask = true; + src->destmask = 0; + + for (i = 0; i < opp->nb_cpus; i++) { + int n_ci = IDR_CI0_SHIFT - i; + + if (src->idr & (1UL << n_ci)) { + src->destmask |= 1UL << i; + } + } + } else { + src->output = OPENPIC_OUTPUT_INT; + src->nomask = false; + src->destmask = src->idr & normal_mask; + } + } else { + src->destmask = src->idr; + } +} + +static inline void write_IRQreg_ilr(OpenPICState *opp, int n_IRQ, uint32_t val) +{ + if (opp->flags & OPENPIC_FLAG_ILR) { + IRQSource *src = &opp->src[n_IRQ]; + + src->output = inttgt_to_output(val & ILR_INTTGT_MASK); + DPRINTF("Set ILR %d to 0x%08x, output %d\n", n_IRQ, src->idr, + src->output); + + /* TODO: on MPIC v4.0 only, set nomask for non-INT */ + } +} + +static inline void write_IRQreg_ivpr(OpenPICState *opp, int n_IRQ, uint32_t val) +{ + uint32_t mask; + + /* NOTE when implementing newer FSL MPIC models: starting with v4.0, + * the polarity bit is read-only on internal interrupts. + */ + mask = IVPR_MASK_MASK | IVPR_PRIORITY_MASK | IVPR_SENSE_MASK | + IVPR_POLARITY_MASK | opp->vector_mask; + + /* ACTIVITY bit is read-only */ + opp->src[n_IRQ].ivpr = + (opp->src[n_IRQ].ivpr & IVPR_ACTIVITY_MASK) | (val & mask); + + /* For FSL internal interrupts, The sense bit is reserved and zero, + * and the interrupt is always level-triggered. Timers and IPIs + * have no sense or polarity bits, and are edge-triggered. + */ + switch (opp->src[n_IRQ].type) { + case IRQ_TYPE_NORMAL: + opp->src[n_IRQ].level = !!(opp->src[n_IRQ].ivpr & IVPR_SENSE_MASK); + break; + + case IRQ_TYPE_FSLINT: + opp->src[n_IRQ].ivpr &= ~IVPR_SENSE_MASK; + break; + + case IRQ_TYPE_FSLSPECIAL: + opp->src[n_IRQ].ivpr &= ~(IVPR_POLARITY_MASK | IVPR_SENSE_MASK); + break; + } + + openpic_update_irq(opp, n_IRQ); + DPRINTF("Set IVPR %d to 0x%08x -> 0x%08x\n", n_IRQ, val, + opp->src[n_IRQ].ivpr); +} + +static void openpic_gcr_write(OpenPICState *opp, uint64_t val) +{ + bool mpic_proxy = false; + + if (val & GCR_RESET) { + openpic_reset(DEVICE(opp)); + return; + } + + opp->gcr &= ~opp->mpic_mode_mask; + opp->gcr |= val & opp->mpic_mode_mask; + + /* Set external proxy mode */ + if ((val & opp->mpic_mode_mask) == GCR_MODE_PROXY) { + mpic_proxy = true; + } + + ppce500_set_mpic_proxy(mpic_proxy); +} + +static void openpic_gbl_write(void *opaque, hwaddr addr, uint64_t val, + unsigned len) +{ + OpenPICState *opp = opaque; + IRQDest *dst; + int idx; + + DPRINTF("%s: addr %#" HWADDR_PRIx " <= %08" PRIx64 "\n", + __func__, addr, val); + if (addr & 0xF) { + return; + } + switch (addr) { + case 0x00: /* Block Revision Register1 (BRR1) is Readonly */ + break; + 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: /* FRR */ + break; + case 0x1020: /* GCR */ + openpic_gcr_write(opp, val); + break; + case 0x1080: /* VIR */ + break; + case 0x1090: /* PIR */ + for (idx = 0; idx < opp->nb_cpus; idx++) { + if ((val & (1 << idx)) && !(opp->pir & (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->pir & (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->pir = val; + break; + case 0x10A0: /* IPI_IVPR */ + case 0x10B0: + case 0x10C0: + case 0x10D0: + { + int idx; + idx = (addr - 0x10A0) >> 4; + write_IRQreg_ivpr(opp, opp->irq_ipi0 + idx, val); + } + break; + case 0x10E0: /* SPVE */ + opp->spve = val & opp->vector_mask; + break; + default: + break; + } +} + +static uint64_t openpic_gbl_read(void *opaque, hwaddr addr, unsigned len) +{ + OpenPICState *opp = opaque; + uint32_t retval; + + DPRINTF("%s: addr %#" HWADDR_PRIx "\n", __func__, addr); + retval = 0xFFFFFFFF; + if (addr & 0xF) { + return retval; + } + switch (addr) { + case 0x1000: /* FRR */ + retval = opp->frr; + break; + case 0x1020: /* GCR */ + retval = opp->gcr; + break; + case 0x1080: /* VIR */ + retval = opp->vir; + break; + case 0x1090: /* PIR */ + retval = 0x00000000; + break; + case 0x00: /* Block Revision Register1 (BRR1) */ + retval = opp->brr1; + 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_IVPR */ + case 0x10B0: + case 0x10C0: + case 0x10D0: + { + int idx; + idx = (addr - 0x10A0) >> 4; + retval = read_IRQreg_ivpr(opp, opp->irq_ipi0 + idx); + } + break; + case 0x10E0: /* SPVE */ + retval = opp->spve; + break; + default: + break; + } + DPRINTF("%s: => 0x%08x\n", __func__, retval); + + return retval; +} + +static void openpic_tmr_write(void *opaque, hwaddr addr, uint64_t val, + unsigned len) +{ + OpenPICState *opp = opaque; + int idx; + + addr += 0x10f0; + + DPRINTF("%s: addr %#" HWADDR_PRIx " <= %08" PRIx64 "\n", + __func__, addr, val); + if (addr & 0xF) { + return; + } + + if (addr == 0x10f0) { + /* TFRR */ + opp->tfrr = val; + return; + } + + idx = (addr >> 6) & 0x3; + addr = addr & 0x30; + + switch (addr & 0x30) { + case 0x00: /* TCCR */ + break; + case 0x10: /* TBCR */ + if ((opp->timers[idx].tccr & TCCR_TOG) != 0 && + (val & TBCR_CI) == 0 && + (opp->timers[idx].tbcr & TBCR_CI) != 0) { + opp->timers[idx].tccr &= ~TCCR_TOG; + } + opp->timers[idx].tbcr = val; + break; + case 0x20: /* TVPR */ + write_IRQreg_ivpr(opp, opp->irq_tim0 + idx, val); + break; + case 0x30: /* TDR */ + write_IRQreg_idr(opp, opp->irq_tim0 + idx, val); + break; + } +} + +static uint64_t openpic_tmr_read(void *opaque, hwaddr addr, unsigned len) +{ + OpenPICState *opp = opaque; + uint32_t retval = -1; + int idx; + + DPRINTF("%s: addr %#" HWADDR_PRIx "\n", __func__, addr); + if (addr & 0xF) { + goto out; + } + idx = (addr >> 6) & 0x3; + if (addr == 0x0) { + /* TFRR */ + retval = opp->tfrr; + goto out; + } + switch (addr & 0x30) { + case 0x00: /* TCCR */ + retval = opp->timers[idx].tccr; + break; + case 0x10: /* TBCR */ + retval = opp->timers[idx].tbcr; + break; + case 0x20: /* TIPV */ + retval = read_IRQreg_ivpr(opp, opp->irq_tim0 + idx); + break; + case 0x30: /* TIDE (TIDR) */ + retval = read_IRQreg_idr(opp, opp->irq_tim0 + idx); + break; + } + +out: + DPRINTF("%s: => 0x%08x\n", __func__, retval); + + return retval; +} + +static void openpic_src_write(void *opaque, hwaddr addr, uint64_t val, + unsigned len) +{ + OpenPICState *opp = opaque; + int idx; + + DPRINTF("%s: addr %#" HWADDR_PRIx " <= %08" PRIx64 "\n", + __func__, addr, val); + + addr = addr & 0xffff; + idx = addr >> 5; + + switch (addr & 0x1f) { + case 0x00: + write_IRQreg_ivpr(opp, idx, val); + break; + case 0x10: + write_IRQreg_idr(opp, idx, val); + break; + case 0x18: + write_IRQreg_ilr(opp, idx, val); + break; + } +} + +static uint64_t openpic_src_read(void *opaque, uint64_t addr, unsigned len) +{ + OpenPICState *opp = opaque; + uint32_t retval; + int idx; + + DPRINTF("%s: addr %#" HWADDR_PRIx "\n", __func__, addr); + retval = 0xFFFFFFFF; + + addr = addr & 0xffff; + idx = addr >> 5; + + switch (addr & 0x1f) { + case 0x00: + retval = read_IRQreg_ivpr(opp, idx); + break; + case 0x10: + retval = read_IRQreg_idr(opp, idx); + break; + case 0x18: + retval = read_IRQreg_ilr(opp, idx); + break; + } + + DPRINTF("%s: => 0x%08x\n", __func__, retval); + return retval; +} + +static void openpic_msi_write(void *opaque, hwaddr addr, uint64_t val, + unsigned size) +{ + OpenPICState *opp = opaque; + int idx = opp->irq_msi; + int srs, ibs; + + DPRINTF("%s: addr %#" HWADDR_PRIx " <= 0x%08" PRIx64 "\n", + __func__, addr, val); + if (addr & 0xF) { + return; + } + + switch (addr) { + case MSIIR_OFFSET: + srs = val >> MSIIR_SRS_SHIFT; + idx += srs; + ibs = (val & MSIIR_IBS_MASK) >> MSIIR_IBS_SHIFT; + opp->msi[srs].msir |= 1 << ibs; + openpic_set_irq(opp, idx, 1); + break; + default: + /* most registers are read-only, thus ignored */ + break; + } +} + +static uint64_t openpic_msi_read(void *opaque, hwaddr addr, unsigned size) +{ + OpenPICState *opp = opaque; + uint64_t r = 0; + int i, srs; + + DPRINTF("%s: addr %#" HWADDR_PRIx "\n", __func__, addr); + if (addr & 0xF) { + return -1; + } + + srs = addr >> 4; + + switch (addr) { + case 0x00: + case 0x10: + case 0x20: + case 0x30: + case 0x40: + case 0x50: + case 0x60: + case 0x70: /* MSIRs */ + r = opp->msi[srs].msir; + /* Clear on read */ + opp->msi[srs].msir = 0; + openpic_set_irq(opp, opp->irq_msi + srs, 0); + break; + case 0x120: /* MSISR */ + for (i = 0; i < MAX_MSI; i++) { + r |= (opp->msi[i].msir ? 1 : 0) << i; + } + break; + } + + return r; +} + +static uint64_t openpic_summary_read(void *opaque, hwaddr addr, unsigned size) +{ + uint64_t r = 0; + + DPRINTF("%s: addr %#" HWADDR_PRIx "\n", __func__, addr); + + /* TODO: EISR/EIMR */ + + return r; +} + +static void openpic_summary_write(void *opaque, hwaddr addr, uint64_t val, + unsigned size) +{ + DPRINTF("%s: addr %#" HWADDR_PRIx " <= 0x%08" PRIx64 "\n", + __func__, addr, val); + + /* TODO: EISR/EIMR */ +} + +static void openpic_cpu_write_internal(void *opaque, hwaddr addr, + uint32_t val, int idx) +{ + OpenPICState *opp = opaque; + IRQSource *src; + IRQDest *dst; + int s_IRQ, n_IRQ; + + DPRINTF("%s: cpu %d addr %#" HWADDR_PRIx " <= 0x%08x\n", __func__, idx, + addr, val); + + if (idx < 0 || idx >= opp->nb_cpus) { + return; + } + + if (addr & 0xF) { + return; + } + dst = &opp->dst[idx]; + addr &= 0xFF0; + switch (addr) { + 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. */ + opp->src[opp->irq_ipi0 + idx].destmask |= val; + openpic_set_irq(opp, opp->irq_ipi0 + idx, 1); + openpic_set_irq(opp, opp->irq_ipi0 + idx, 0); + break; + case 0x80: /* CTPR */ + dst->ctpr = val & 0x0000000F; + + DPRINTF("%s: set CPU %d ctpr to %d, raised %d servicing %d\n", + __func__, idx, dst->ctpr, dst->raised.priority, + dst->servicing.priority); + + if (dst->raised.priority <= dst->ctpr) { + DPRINTF("%s: Lower OpenPIC INT output cpu %d due to ctpr\n", + __func__, idx); + qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_INT]); + } else if (dst->raised.priority > dst->servicing.priority) { + DPRINTF("%s: Raise OpenPIC INT output cpu %d irq %d\n", + __func__, idx, dst->raised.next); + qemu_irq_raise(dst->irqs[OPENPIC_OUTPUT_INT]); + } + + break; + case 0x90: /* WHOAMI */ + /* Read-only register */ + break; + case 0xA0: /* IACK */ + /* Read-only register */ + break; + case 0xB0: /* EOI */ + DPRINTF("EOI\n"); + s_IRQ = IRQ_get_next(opp, &dst->servicing); + + if (s_IRQ < 0) { + DPRINTF("%s: EOI with no interrupt in service\n", __func__); + break; + } + + IRQ_resetbit(&dst->servicing, s_IRQ); + /* 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 || + IVPR_PRIORITY(src->ivpr) > dst->servicing.priority)) { + DPRINTF("Raise OpenPIC INT output cpu %d irq %d\n", + idx, n_IRQ); + qemu_irq_raise(opp->dst[idx].irqs[OPENPIC_OUTPUT_INT]); + } + break; + default: + break; + } +} + +static void openpic_cpu_write(void *opaque, hwaddr addr, uint64_t val, + unsigned len) +{ + openpic_cpu_write_internal(opaque, addr, val, (addr & 0x1f000) >> 12); +} + + +static uint32_t openpic_iack(OpenPICState *opp, IRQDest *dst, int cpu) +{ + IRQSource *src; + int retval, irq; + + DPRINTF("Lower OpenPIC INT output\n"); + qemu_irq_lower(dst->irqs[OPENPIC_OUTPUT_INT]); + + irq = IRQ_get_next(opp, &dst->raised); + DPRINTF("IACK: irq=%d\n", irq); + + if (irq == -1) { + /* No more interrupt pending */ + return opp->spve; + } + + src = &opp->src[irq]; + if (!(src->ivpr & IVPR_ACTIVITY_MASK) || + !(IVPR_PRIORITY(src->ivpr) > dst->ctpr)) { + fprintf(stderr, "%s: bad raised IRQ %d ctpr %d ivpr 0x%08x\n", + __func__, irq, dst->ctpr, src->ivpr); + openpic_update_irq(opp, irq); + retval = opp->spve; + } else { + /* IRQ enter servicing state */ + IRQ_setbit(&dst->servicing, irq); + retval = IVPR_VECTOR(opp, src->ivpr); + } + + if (!src->level) { + /* edge-sensitive IRQ */ + src->ivpr &= ~IVPR_ACTIVITY_MASK; + src->pending = 0; + IRQ_resetbit(&dst->raised, irq); + } + + if ((irq >= opp->irq_ipi0) && (irq < (opp->irq_ipi0 + OPENPIC_MAX_IPI))) { + src->destmask &= ~(1 << cpu); + if (src->destmask && !src->level) { + /* trigger on CPUs that didn't know about it yet */ + openpic_set_irq(opp, irq, 1); + openpic_set_irq(opp, irq, 0); + /* if all CPUs knew about it, set active bit again */ + src->ivpr |= IVPR_ACTIVITY_MASK; + } + } + + return retval; +} + +static uint32_t openpic_cpu_read_internal(void *opaque, hwaddr addr, + int idx) +{ + OpenPICState *opp = opaque; + IRQDest *dst; + uint32_t retval; + + DPRINTF("%s: cpu %d addr %#" HWADDR_PRIx "\n", __func__, idx, addr); + retval = 0xFFFFFFFF; + + if (idx < 0 || idx >= opp->nb_cpus) { + return retval; + } + + if (addr & 0xF) { + return retval; + } + dst = &opp->dst[idx]; + addr &= 0xFF0; + switch (addr) { + case 0x80: /* CTPR */ + retval = dst->ctpr; + break; + case 0x90: /* WHOAMI */ + retval = idx; + break; + case 0xA0: /* IACK */ + retval = openpic_iack(opp, dst, idx); + break; + case 0xB0: /* EOI */ + retval = 0; + break; + default: + break; + } + DPRINTF("%s: => 0x%08x\n", __func__, retval); + + return retval; +} + +static uint64_t openpic_cpu_read(void *opaque, hwaddr addr, unsigned len) +{ + return openpic_cpu_read_internal(opaque, addr, (addr & 0x1f000) >> 12); +} + +static const MemoryRegionOps openpic_glb_ops_le = { + .write = openpic_gbl_write, + .read = openpic_gbl_read, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_glb_ops_be = { + .write = openpic_gbl_write, + .read = openpic_gbl_read, + .endianness = DEVICE_BIG_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_tmr_ops_le = { + .write = openpic_tmr_write, + .read = openpic_tmr_read, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_tmr_ops_be = { + .write = openpic_tmr_write, + .read = openpic_tmr_read, + .endianness = DEVICE_BIG_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_cpu_ops_le = { + .write = openpic_cpu_write, + .read = openpic_cpu_read, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_cpu_ops_be = { + .write = openpic_cpu_write, + .read = openpic_cpu_read, + .endianness = DEVICE_BIG_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_src_ops_le = { + .write = openpic_src_write, + .read = openpic_src_read, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_src_ops_be = { + .write = openpic_src_write, + .read = openpic_src_read, + .endianness = DEVICE_BIG_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_msi_ops_be = { + .read = openpic_msi_read, + .write = openpic_msi_write, + .endianness = DEVICE_BIG_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps openpic_summary_ops_be = { + .read = openpic_summary_read, + .write = openpic_summary_write, + .endianness = DEVICE_BIG_ENDIAN, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static void openpic_reset(DeviceState *d) +{ + OpenPICState *opp = OPENPIC(d); + int i; + + opp->gcr = GCR_RESET; + /* Initialise controller registers */ + opp->frr = ((opp->nb_irqs - 1) << FRR_NIRQ_SHIFT) | + ((opp->nb_cpus - 1) << FRR_NCPU_SHIFT) | + (opp->vid << FRR_VID_SHIFT); + + opp->pir = 0; + opp->spve = -1 & opp->vector_mask; + opp->tfrr = opp->tfrr_reset; + /* Initialise IRQ sources */ + for (i = 0; i < opp->max_irq; i++) { + opp->src[i].ivpr = opp->ivpr_reset; + switch (opp->src[i].type) { + case IRQ_TYPE_NORMAL: + opp->src[i].level = !!(opp->ivpr_reset & IVPR_SENSE_MASK); + break; + + case IRQ_TYPE_FSLINT: + opp->src[i].ivpr |= IVPR_POLARITY_MASK; + break; + + case IRQ_TYPE_FSLSPECIAL: + break; + } + + write_IRQreg_idr(opp, i, opp->idr_reset); + } + /* Initialise IRQ destinations */ + for (i = 0; i < opp->nb_cpus; i++) { + opp->dst[i].ctpr = 15; + opp->dst[i].raised.next = -1; + opp->dst[i].raised.priority = 0; + bitmap_clear(opp->dst[i].raised.queue, 0, IRQQUEUE_SIZE_BITS); + opp->dst[i].servicing.next = -1; + opp->dst[i].servicing.priority = 0; + bitmap_clear(opp->dst[i].servicing.queue, 0, IRQQUEUE_SIZE_BITS); + } + /* Initialise timers */ + for (i = 0; i < OPENPIC_MAX_TMR; i++) { + opp->timers[i].tccr = 0; + opp->timers[i].tbcr = TBCR_CI; + } + /* Go out of RESET state */ + opp->gcr = 0; +} + +typedef struct MemReg { + const char *name; + MemoryRegionOps const *ops; + hwaddr start_addr; + ram_addr_t size; +} MemReg; + +static void fsl_common_init(OpenPICState *opp) +{ + int i; + int virq = OPENPIC_MAX_SRC; + + opp->vid = VID_REVISION_1_2; + opp->vir = VIR_GENERIC; + opp->vector_mask = 0xFFFF; + opp->tfrr_reset = 0; + opp->ivpr_reset = IVPR_MASK_MASK; + opp->idr_reset = 1 << 0; + opp->max_irq = OPENPIC_MAX_IRQ; + + opp->irq_ipi0 = virq; + virq += OPENPIC_MAX_IPI; + opp->irq_tim0 = virq; + virq += OPENPIC_MAX_TMR; + + assert(virq <= OPENPIC_MAX_IRQ); + + opp->irq_msi = 224; + + msi_supported = true; + for (i = 0; i < opp->fsl->max_ext; i++) { + opp->src[i].level = false; + } + + /* Internal interrupts, including message and MSI */ + for (i = 16; i < OPENPIC_MAX_SRC; i++) { + opp->src[i].type = IRQ_TYPE_FSLINT; + opp->src[i].level = true; + } + + /* timers and IPIs */ + for (i = OPENPIC_MAX_SRC; i < virq; i++) { + opp->src[i].type = IRQ_TYPE_FSLSPECIAL; + opp->src[i].level = false; + } +} + +static void map_list(OpenPICState *opp, const MemReg *list, int *count) +{ + while (list->name) { + assert(*count < ARRAY_SIZE(opp->sub_io_mem)); + + memory_region_init_io(&opp->sub_io_mem[*count], OBJECT(opp), list->ops, + opp, list->name, list->size); + + memory_region_add_subregion(&opp->mem, list->start_addr, + &opp->sub_io_mem[*count]); + + (*count)++; + list++; + } +} + +static const VMStateDescription vmstate_openpic_irq_queue = { + .name = "openpic_irq_queue", + .version_id = 0, + .minimum_version_id = 0, + .fields = (VMStateField[]) { + VMSTATE_BITMAP(queue, IRQQueue, 0, queue_size), + VMSTATE_INT32(next, IRQQueue), + VMSTATE_INT32(priority, IRQQueue), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_openpic_irqdest = { + .name = "openpic_irqdest", + .version_id = 0, + .minimum_version_id = 0, + .fields = (VMStateField[]) { + VMSTATE_INT32(ctpr, IRQDest), + VMSTATE_STRUCT(raised, IRQDest, 0, vmstate_openpic_irq_queue, + IRQQueue), + VMSTATE_STRUCT(servicing, IRQDest, 0, vmstate_openpic_irq_queue, + IRQQueue), + VMSTATE_UINT32_ARRAY(outputs_active, IRQDest, OPENPIC_OUTPUT_NB), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_openpic_irqsource = { + .name = "openpic_irqsource", + .version_id = 0, + .minimum_version_id = 0, + .fields = (VMStateField[]) { + VMSTATE_UINT32(ivpr, IRQSource), + VMSTATE_UINT32(idr, IRQSource), + VMSTATE_UINT32(destmask, IRQSource), + VMSTATE_INT32(last_cpu, IRQSource), + VMSTATE_INT32(pending, IRQSource), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_openpic_timer = { + .name = "openpic_timer", + .version_id = 0, + .minimum_version_id = 0, + .fields = (VMStateField[]) { + VMSTATE_UINT32(tccr, OpenPICTimer), + VMSTATE_UINT32(tbcr, OpenPICTimer), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_openpic_msi = { + .name = "openpic_msi", + .version_id = 0, + .minimum_version_id = 0, + .fields = (VMStateField[]) { + VMSTATE_UINT32(msir, OpenPICMSI), + VMSTATE_END_OF_LIST() + } +}; + +static int openpic_post_load(void *opaque, int version_id) +{ + OpenPICState *opp = (OpenPICState *)opaque; + int i; + + /* Update internal ivpr and idr variables */ + for (i = 0; i < opp->max_irq; i++) { + write_IRQreg_idr(opp, i, opp->src[i].idr); + write_IRQreg_ivpr(opp, i, opp->src[i].ivpr); + } + + return 0; +} + +static const VMStateDescription vmstate_openpic = { + .name = "openpic", + .version_id = 3, + .minimum_version_id = 3, + .post_load = openpic_post_load, + .fields = (VMStateField[]) { + VMSTATE_UINT32(gcr, OpenPICState), + VMSTATE_UINT32(vir, OpenPICState), + VMSTATE_UINT32(pir, OpenPICState), + VMSTATE_UINT32(spve, OpenPICState), + VMSTATE_UINT32(tfrr, OpenPICState), + VMSTATE_UINT32(max_irq, OpenPICState), + VMSTATE_STRUCT_VARRAY_UINT32(src, OpenPICState, max_irq, 0, + vmstate_openpic_irqsource, IRQSource), + VMSTATE_UINT32_EQUAL(nb_cpus, OpenPICState), + VMSTATE_STRUCT_VARRAY_UINT32(dst, OpenPICState, nb_cpus, 0, + vmstate_openpic_irqdest, IRQDest), + VMSTATE_STRUCT_ARRAY(timers, OpenPICState, OPENPIC_MAX_TMR, 0, + vmstate_openpic_timer, OpenPICTimer), + VMSTATE_STRUCT_ARRAY(msi, OpenPICState, MAX_MSI, 0, + vmstate_openpic_msi, OpenPICMSI), + VMSTATE_UINT32(irq_ipi0, OpenPICState), + VMSTATE_UINT32(irq_tim0, OpenPICState), + VMSTATE_UINT32(irq_msi, OpenPICState), + VMSTATE_END_OF_LIST() + } +}; + +static void openpic_init(Object *obj) +{ + OpenPICState *opp = OPENPIC(obj); + + memory_region_init(&opp->mem, obj, "openpic", 0x40000); +} + +static void openpic_realize(DeviceState *dev, Error **errp) +{ + SysBusDevice *d = SYS_BUS_DEVICE(dev); + OpenPICState *opp = OPENPIC(dev); + int i, j; + int list_count = 0; + static const MemReg list_le[] = { + {"glb", &openpic_glb_ops_le, + OPENPIC_GLB_REG_START, OPENPIC_GLB_REG_SIZE}, + {"tmr", &openpic_tmr_ops_le, + OPENPIC_TMR_REG_START, OPENPIC_TMR_REG_SIZE}, + {"src", &openpic_src_ops_le, + OPENPIC_SRC_REG_START, OPENPIC_SRC_REG_SIZE}, + {"cpu", &openpic_cpu_ops_le, + OPENPIC_CPU_REG_START, OPENPIC_CPU_REG_SIZE}, + {NULL} + }; + static const MemReg list_be[] = { + {"glb", &openpic_glb_ops_be, + OPENPIC_GLB_REG_START, OPENPIC_GLB_REG_SIZE}, + {"tmr", &openpic_tmr_ops_be, + OPENPIC_TMR_REG_START, OPENPIC_TMR_REG_SIZE}, + {"src", &openpic_src_ops_be, + OPENPIC_SRC_REG_START, OPENPIC_SRC_REG_SIZE}, + {"cpu", &openpic_cpu_ops_be, + OPENPIC_CPU_REG_START, OPENPIC_CPU_REG_SIZE}, + {NULL} + }; + static const MemReg list_fsl[] = { + {"msi", &openpic_msi_ops_be, + OPENPIC_MSI_REG_START, OPENPIC_MSI_REG_SIZE}, + {"summary", &openpic_summary_ops_be, + OPENPIC_SUMMARY_REG_START, OPENPIC_SUMMARY_REG_SIZE}, + {NULL} + }; + + if (opp->nb_cpus > MAX_CPU) { + error_setg(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, + TYPE_OPENPIC, "nb_cpus", (uint64_t)opp->nb_cpus, + (uint64_t)0, (uint64_t)MAX_CPU); + return; + } + + switch (opp->model) { + case OPENPIC_MODEL_FSL_MPIC_20: + default: + opp->fsl = &fsl_mpic_20; + opp->brr1 = 0x00400200; + opp->flags |= OPENPIC_FLAG_IDR_CRIT; + opp->nb_irqs = 80; + opp->mpic_mode_mask = GCR_MODE_MIXED; + + fsl_common_init(opp); + map_list(opp, list_be, &list_count); + map_list(opp, list_fsl, &list_count); + + break; + + case OPENPIC_MODEL_FSL_MPIC_42: + opp->fsl = &fsl_mpic_42; + opp->brr1 = 0x00400402; + opp->flags |= OPENPIC_FLAG_ILR; + opp->nb_irqs = 196; + opp->mpic_mode_mask = GCR_MODE_PROXY; + + fsl_common_init(opp); + map_list(opp, list_be, &list_count); + map_list(opp, list_fsl, &list_count); + + break; + + case OPENPIC_MODEL_RAVEN: + opp->nb_irqs = RAVEN_MAX_EXT; + opp->vid = VID_REVISION_1_3; + opp->vir = VIR_GENERIC; + opp->vector_mask = 0xFF; + opp->tfrr_reset = 4160000; + opp->ivpr_reset = IVPR_MASK_MASK | IVPR_MODE_MASK; + opp->idr_reset = 0; + opp->max_irq = RAVEN_MAX_IRQ; + opp->irq_ipi0 = RAVEN_IPI_IRQ; + opp->irq_tim0 = RAVEN_TMR_IRQ; + opp->brr1 = -1; + opp->mpic_mode_mask = GCR_MODE_MIXED; + + if (opp->nb_cpus != 1) { + error_setg(errp, "Only UP supported today"); + return; + } + + map_list(opp, list_le, &list_count); + break; + } + + for (i = 0; i < opp->nb_cpus; i++) { + opp->dst[i].irqs = g_new0(qemu_irq, OPENPIC_OUTPUT_NB); + for (j = 0; j < OPENPIC_OUTPUT_NB; j++) { + sysbus_init_irq(d, &opp->dst[i].irqs[j]); + } + + opp->dst[i].raised.queue_size = IRQQUEUE_SIZE_BITS; + opp->dst[i].raised.queue = bitmap_new(IRQQUEUE_SIZE_BITS); + opp->dst[i].servicing.queue_size = IRQQUEUE_SIZE_BITS; + opp->dst[i].servicing.queue = bitmap_new(IRQQUEUE_SIZE_BITS); + } + + sysbus_init_mmio(d, &opp->mem); + qdev_init_gpio_in(dev, openpic_set_irq, opp->max_irq); +} + +static Property openpic_properties[] = { + DEFINE_PROP_UINT32("model", OpenPICState, model, OPENPIC_MODEL_FSL_MPIC_20), + DEFINE_PROP_UINT32("nb_cpus", OpenPICState, nb_cpus, 1), + DEFINE_PROP_END_OF_LIST(), +}; + +static void openpic_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + dc->realize = openpic_realize; + dc->props = openpic_properties; + dc->reset = openpic_reset; + dc->vmsd = &vmstate_openpic; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); +} + +static const TypeInfo openpic_info = { + .name = TYPE_OPENPIC, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(OpenPICState), + .instance_init = openpic_init, + .class_init = openpic_class_init, +}; + +static void openpic_register_types(void) +{ + type_register_static(&openpic_info); +} + +type_init(openpic_register_types) |
