Patchwork [02/12] KVM/MIPS: GIC emulation for SMP guests.

login
register
mail settings
Submitter Sanjay Lal
Date March 2, 2013, 3:18 p.m.
Message ID <1362237527-23678-4-git-send-email-sanjayl@kymasys.com>
Download mbox | patch
Permalink /patch/224498/
State New
Headers show

Comments

Sanjay Lal - March 2, 2013, 3:18 p.m.
---
 hw/mips_gcmpregs.h | 122 ++++++++++++++++
 hw/mips_gic.c      | 418 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 hw/mips_gic.h      | 378 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 918 insertions(+)
 create mode 100644 hw/mips_gcmpregs.h
 create mode 100644 hw/mips_gic.c
 create mode 100644 hw/mips_gic.h

Patch

diff --git a/hw/mips_gcmpregs.h b/hw/mips_gcmpregs.h
new file mode 100644
index 0000000..933a5c2
--- /dev/null
+++ b/hw/mips_gcmpregs.h
@@ -0,0 +1,122 @@ 
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2000, 07 MIPS Technologies, Inc.
+ *
+ * Multiprocessor Subsystem Register Definitions
+ *
+ */
+#ifndef _ASM_GCMPREGS_H
+#define _ASM_GCMPREGS_H
+
+
+/* Offsets to major blocks within GCMP from GCMP base */
+#define GCMP_GCB_OFS		0x0000 /* Global Control Block */
+#define GCMP_CLCB_OFS		0x2000 /* Core Local Control Block */
+#define GCMP_COCB_OFS		0x4000 /* Core Other Control Block */
+#define GCMP_GDB_OFS		0x8000 /* Global Debug Block */
+
+/* Offsets to individual GCMP registers from GCMP base */
+#define GCMPOFS(block, tag, reg)	\
+	(GCMP_##block##_OFS + GCMP_##tag##_##reg##_OFS)
+#define GCMPOFSn(block, tag, reg, n) \
+	(GCMP_##block##_OFS + GCMP_##tag##_##reg##_OFS(n))
+
+#define GCMPGCBOFS(reg)		GCMPOFS(GCB, GCB, reg)
+#define GCMPGCBOFSn(reg, n)	GCMPOFSn(GCB, GCB, reg, n)
+#define GCMPCLCBOFS(reg)	GCMPOFS(CLCB, CCB, reg)
+#define GCMPCOCBOFS(reg)	GCMPOFS(COCB, CCB, reg)
+#define GCMPGDBOFS(reg)		GCMPOFS(GDB, GDB, reg)
+
+/* GCMP register access */
+#define GCMPGCB(reg)			REGP(_gcmp_base, GCMPGCBOFS(reg))
+#define GCMPGCBn(reg, n)               REGP(_gcmp_base, GCMPGCBOFSn(reg, n))
+#define GCMPCLCB(reg)			REGP(_gcmp_base, GCMPCLCBOFS(reg))
+#define GCMPCOCB(reg)			REGP(_gcmp_base, GCMPCOCBOFS(reg))
+#define GCMPGDB(reg)			REGP(_gcmp_base, GCMPGDBOFS(reg))
+
+/* Mask generation */
+#define GCMPMSK(block, reg, bits)	(MSK(bits)<<GCMP_##block##_##reg##_SHF)
+#define GCMPGCBMSK(reg, bits)		GCMPMSK(GCB, reg, bits)
+#define GCMPCCBMSK(reg, bits)		GCMPMSK(CCB, reg, bits)
+#define GCMPGDBMSK(reg, bits)		GCMPMSK(GDB, reg, bits)
+
+/* GCB registers */
+#define GCMP_GCB_GC_OFS			0x0000	/* Global Config Register */
+#define  GCMP_GCB_GC_NUMIOCU_SHF	8
+#define  GCMP_GCB_GC_NUMIOCU_MSK	GCMPGCBMSK(GC_NUMIOCU, 4)
+#define  GCMP_GCB_GC_NUMCORES_SHF	0
+#define  GCMP_GCB_GC_NUMCORES_MSK	GCMPGCBMSK(GC_NUMCORES, 8)
+#define GCMP_GCB_GCMPB_OFS		0x0008		/* Global GCMP Base */
+#define  GCMP_GCB_GCMPB_GCMPBASE_SHF	15
+#define  GCMP_GCB_GCMPB_GCMPBASE_MSK	GCMPGCBMSK(GCMPB_GCMPBASE, 17)
+#define  GCMP_GCB_GCMPB_CMDEFTGT_SHF	0
+#define  GCMP_GCB_GCMPB_CMDEFTGT_MSK	GCMPGCBMSK(GCMPB_CMDEFTGT, 2)
+#define  GCMP_GCB_GCMPB_CMDEFTGT_DISABLED	0
+#define  GCMP_GCB_GCMPB_CMDEFTGT_MEM		1
+#define  GCMP_GCB_GCMPB_CMDEFTGT_IOCU1		2
+#define  GCMP_GCB_GCMPB_CMDEFTGT_IOCU2		3
+#define GCMP_GCB_CCMC_OFS		0x0010	/* Global CM Control */
+#define GCMP_GCB_GCSRAP_OFS		0x0020	/* Global CSR Access Privilege */
+#define  GCMP_GCB_GCSRAP_CMACCESS_SHF	0
+#define  GCMP_GCB_GCSRAP_CMACCESS_MSK	GCMPGCBMSK(GCSRAP_CMACCESS, 8)
+#define GCMP_GCB_GCMPREV_OFS		0x0030	/* GCMP Revision Register */
+#define GCMP_GCB_GCMEM_OFS		0x0040	/* Global CM Error Mask */
+#define GCMP_GCB_GCMEC_OFS		0x0048	/* Global CM Error Cause */
+#define  GCMP_GCB_GMEC_ERROR_TYPE_SHF	27
+#define  GCMP_GCB_GMEC_ERROR_TYPE_MSK	GCMPGCBMSK(GMEC_ERROR_TYPE, 5)
+#define  GCMP_GCB_GMEC_ERROR_INFO_SHF	0
+#define  GCMP_GCB_GMEC_ERROR_INFO_MSK	GCMPGCBMSK(GMEC_ERROR_INFO, 27)
+#define GCMP_GCB_GCMEA_OFS		0x0050	/* Global CM Error Address */
+#define GCMP_GCB_GCMEO_OFS		0x0058	/* Global CM Error Multiple */
+#define  GCMP_GCB_GMEO_ERROR_2ND_SHF	0
+#define  GCMP_GCB_GMEO_ERROR_2ND_MSK	GCMPGCBMSK(GMEO_ERROR_2ND, 5)
+#define GCMP_GCB_GICBA_OFS		0x0080	/* Global Interrupt Controller Base Address */
+#define  GCMP_GCB_GICBA_BASE_SHF	17
+#define  GCMP_GCB_GICBA_BASE_MSK	GCMPGCBMSK(GICBA_BASE, 15)
+#define  GCMP_GCB_GICBA_EN_SHF		0
+#define  GCMP_GCB_GICBA_EN_MSK		GCMPGCBMSK(GICBA_EN, 1)
+
+/* GCB Regions */
+#define GCMP_GCB_CMxBASE_OFS(n)		(0x0090+16*(n))		/* Global Region[0-3] Base Address */
+#define  GCMP_GCB_CMxBASE_BASE_SHF	16
+#define  GCMP_GCB_CMxBASE_BASE_MSK	GCMPGCBMSK(CMxBASE_BASE, 16)
+#define GCMP_GCB_CMxMASK_OFS(n)		(0x0098+16*(n))		/* Global Region[0-3] Address Mask */
+#define  GCMP_GCB_CMxMASK_MASK_SHF	16
+#define  GCMP_GCB_CMxMASK_MASK_MSK	GCMPGCBMSK(CMxMASK_MASK, 16)
+#define  GCMP_GCB_CMxMASK_CMREGTGT_SHF	0
+#define  GCMP_GCB_CMxMASK_CMREGTGT_MSK	GCMPGCBMSK(CMxMASK_CMREGTGT, 2)
+#define  GCMP_GCB_CMxMASK_CMREGTGT_MEM	 0
+#define  GCMP_GCB_CMxMASK_CMREGTGT_MEM1  1
+#define  GCMP_GCB_CMxMASK_CMREGTGT_IOCU1 2
+#define  GCMP_GCB_CMxMASK_CMREGTGT_IOCU2 3
+
+
+/* Core local/Core other control block registers */
+#define GCMP_CCB_RESETR_OFS		0x0000			/* Reset Release */
+#define  GCMP_CCB_RESETR_INRESET_SHF	0
+#define  GCMP_CCB_RESETR_INRESET_MSK	GCMPCCBMSK(RESETR_INRESET, 16)
+#define GCMP_CCB_COHCTL_OFS		0x0008			/* Coherence Control */
+#define  GCMP_CCB_COHCTL_DOMAIN_SHF	0
+#define  GCMP_CCB_COHCTL_DOMAIN_MSK	GCMPCCBMSK(COHCTL_DOMAIN, 8)
+#define GCMP_CCB_CFG_OFS		0x0010			/* Config */
+#define  GCMP_CCB_CFG_IOCUTYPE_SHF	10
+#define  GCMP_CCB_CFG_IOCUTYPE_MSK	GCMPCCBMSK(CFG_IOCUTYPE, 2)
+#define   GCMP_CCB_CFG_IOCUTYPE_CPU	0
+#define   GCMP_CCB_CFG_IOCUTYPE_NCIOCU	1
+#define   GCMP_CCB_CFG_IOCUTYPE_CIOCU	2
+#define  GCMP_CCB_CFG_NUMVPE_SHF	0
+#define  GCMP_CCB_CFG_NUMVPE_MSK	GCMPCCBMSK(CFG_NUMVPE, 10)
+#define GCMP_CCB_OTHER_OFS		0x0018		/* Other Address */
+#define  GCMP_CCB_OTHER_CORENUM_SHF	16
+#define  GCMP_CCB_OTHER_CORENUM_MSK	GCMPCCBMSK(OTHER_CORENUM, 16)
+#define GCMP_CCB_RESETBASE_OFS		0x0020		/* Reset Exception Base */
+#define  GCMP_CCB_RESETBASE_BEV_SHF	12
+#define  GCMP_CCB_RESETBASE_BEV_MSK	GCMPCCBMSK(RESETBASE_BEV, 20)
+#define GCMP_CCB_ID_OFS			0x0028		/* Identification */
+#define GCMP_CCB_DINTGROUP_OFS		0x0030		/* DINT Group Participate */
+#define GCMP_CCB_DBGGROUP_OFS		0x0100		/* DebugBreak Group */
+
+#endif /* _ASM_GCMPREGS_H */
diff --git a/hw/mips_gic.c b/hw/mips_gic.c
new file mode 100644
index 0000000..b477b7a
--- /dev/null
+++ b/hw/mips_gic.c
@@ -0,0 +1,418 @@ 
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
+ * Authors: Sanjay Lal <sanjayl@kymasys.com>
+*/
+
+#include "hw.h"
+#include "qemu/bitmap.h"
+#include "exec/memory.h"
+#include "sysemu/sysemu.h"
+
+#ifdef CONFIG_KVM
+#include "sysemu/kvm.h"
+#include "kvm_mips.h"
+#endif
+
+#include "mips_gic.h"
+#include "mips_gcmpregs.h"
+
+//#define DEBUG
+
+#ifdef DEBUG
+#define DPRINTF(fmt, ...) fprintf(stderr, "%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
+#else
+#define DPRINTF(fmt, ...)
+#endif
+
+/* Support upto 4 VPEs */
+#define NUMVPES     4
+
+/* XXXKYMA: Spoof a bit of the GCR as well, just enough to get Linux to detect it */
+typedef struct gic_t
+{
+    CPUMIPSState *env[NR_CPUS];
+    MemoryRegion gcr_mem, gic_mem;
+
+    qemu_irq *irqs;
+
+    /* GCR Registers */
+    uint32_t gcr_gic_base_reg;
+
+    /* Shared Section Registers */
+    uint32_t gic_gl_intr_pol_reg[8];
+    uint32_t gic_gl_intr_trigtype_reg[8];
+    uint32_t gic_gl_intr_pending_reg[8];
+    uint32_t gic_gl_intr_mask_reg[8];
+
+    uint32_t gic_gl_map_pin[256];
+
+    /* Sparse array, need a better way */
+    uint32_t gic_gl_map_vpe[0x7fa];
+
+    /* VPE Local Section Registers */
+    /* VPE Other Section Registers, aliased to local, use the other field to access the correct instance */
+    uint32_t gic_local_vpe_regs[NUMVPES][0x1000];
+
+    /* User Mode Visible Section Registers */
+} gic_t;
+
+
+static uint64_t
+gic_read(void *opaque, hwaddr addr, unsigned size)
+{
+    int reg;
+    gic_t *gic = (gic_t *) opaque;
+
+    DPRINTF("addr: %#" PRIx64 ", size: %#x\n", addr, size);
+
+    switch (addr) {
+    case GIC_SH_CONFIG_OFS:
+        return 0x8040000 | ((NUMVPES - 1) & GIC_SH_CONFIG_NUMVPES_MSK);
+        break;
+
+    case GIC_SH_POL_31_0_OFS:
+    case GIC_SH_POL_63_32_OFS:
+    case GIC_SH_POL_95_64_OFS:
+    case GIC_SH_POL_127_96_OFS:
+    case GIC_SH_POL_159_128_OFS:
+    case GIC_SH_POL_191_160_OFS:
+    case GIC_SH_POL_223_192_OFS:
+    case GIC_SH_POL_255_224_OFS:
+        reg = (addr - GIC_SH_POL_31_0_OFS) / 4;
+        return gic->gic_gl_intr_pol_reg[reg];
+        break;
+
+    case GIC_SH_TRIG_31_0_OFS:
+    case GIC_SH_TRIG_63_32_OFS:
+    case GIC_SH_TRIG_95_64_OFS:
+    case GIC_SH_TRIG_127_96_OFS:
+    case GIC_SH_TRIG_159_128_OFS:
+    case GIC_SH_TRIG_191_160_OFS:
+    case GIC_SH_TRIG_223_192_OFS:
+    case GIC_SH_TRIG_255_224_OFS:
+        reg = (addr - GIC_SH_TRIG_31_0_OFS) / 4;
+        return gic->gic_gl_intr_trigtype_reg[reg];
+        break;
+
+    case GIC_SH_RMASK_31_0_OFS:
+    case GIC_SH_RMASK_63_32_OFS:
+    case GIC_SH_RMASK_95_64_OFS:
+    case GIC_SH_RMASK_127_96_OFS:
+    case GIC_SH_RMASK_159_128_OFS:
+    case GIC_SH_RMASK_191_160_OFS:
+    case GIC_SH_RMASK_223_192_OFS:
+    case GIC_SH_RMASK_255_224_OFS:
+        break;
+
+    case GIC_SH_PEND_31_0_OFS:
+    case GIC_SH_PEND_63_32_OFS:
+    case GIC_SH_PEND_95_64_OFS:
+    case GIC_SH_PEND_127_96_OFS:
+    case GIC_SH_PEND_159_128_OFS:
+    case GIC_SH_PEND_191_160_OFS:
+    case GIC_SH_PEND_223_192_OFS:
+    case GIC_SH_PEND_255_224_OFS:
+        reg = (addr - GIC_SH_PEND_31_0_OFS) / 4;
+        DPRINTF("pending[%d]: %#" PRIx32 "\n", reg, gic->gic_gl_intr_pending_reg[reg]);
+        return gic->gic_gl_intr_pending_reg[reg];
+        break;
+
+    case GIC_SH_MASK_31_0_OFS:
+    case GIC_SH_MASK_63_32_OFS:
+    case GIC_SH_MASK_95_64_OFS:
+    case GIC_SH_MASK_127_96_OFS:
+    case GIC_SH_MASK_159_128_OFS:
+    case GIC_SH_MASK_191_160_OFS:
+    case GIC_SH_MASK_223_192_OFS:
+    case GIC_SH_MASK_255_224_OFS:
+        reg = (addr - GIC_SH_MASK_31_0_OFS) / 4;
+        return gic->gic_gl_intr_mask_reg[reg];
+        break;
+
+    default:
+        break;
+    }
+
+    /* Other cases */
+    if (addr >= GIC_SH_INTR_MAP_TO_PIN_BASE_OFS
+        && addr <= GIC_SH_MAP_TO_PIN(255)) {
+        reg = (addr - GIC_SH_INTR_MAP_TO_PIN_BASE_OFS) / 4;
+        return gic->gic_gl_map_pin[reg];
+    }
+
+    if (addr >= GIC_SH_INTR_MAP_TO_VPE_BASE_OFS
+        && addr <= GIC_SH_MAP_TO_VPE_REG_OFF(255, 63)) {
+        reg = (addr - GIC_SH_INTR_MAP_TO_VPE_BASE_OFS) / 4;
+        return gic->gic_gl_map_vpe[reg];
+    }
+
+    if (addr >= GIC_VPELOCAL_BASE_ADDR && addr < GIC_VPEOTHER_BASE_ADDR) {
+    }
+
+    if (addr >= GIC_VPEOTHER_BASE_ADDR && addr < GIC_USERMODE_BASE_ADDR) {
+    }
+
+    DPRINTF("%s: unimplemented register @ %#" PRIx64 "\n", __func__, addr);
+    return 0ULL;
+}
+
+static void
+gic_write(void *opaque, hwaddr addr, uint64_t data, unsigned size)
+{
+    int reg, intr;
+    gic_t *gic = (gic_t *) opaque;
+
+    DPRINTF("addr: %#" PRIx64 ", data: %#" PRIx64 ", size: %#x\n", addr, data,
+            size);
+
+    switch (addr) {
+    case GIC_SH_POL_31_0_OFS:
+    case GIC_SH_POL_63_32_OFS:
+    case GIC_SH_POL_95_64_OFS:
+    case GIC_SH_POL_127_96_OFS:
+    case GIC_SH_POL_159_128_OFS:
+    case GIC_SH_POL_191_160_OFS:
+    case GIC_SH_POL_223_192_OFS:
+    case GIC_SH_POL_255_224_OFS:
+        reg = (addr - GIC_SH_POL_31_0_OFS) / 4;
+        gic->gic_gl_intr_pol_reg[reg] = data;
+        break;
+
+    case GIC_SH_TRIG_31_0_OFS:
+    case GIC_SH_TRIG_63_32_OFS:
+    case GIC_SH_TRIG_95_64_OFS:
+    case GIC_SH_TRIG_127_96_OFS:
+    case GIC_SH_TRIG_159_128_OFS:
+    case GIC_SH_TRIG_191_160_OFS:
+    case GIC_SH_TRIG_223_192_OFS:
+    case GIC_SH_TRIG_255_224_OFS:
+        reg = (addr - GIC_SH_TRIG_31_0_OFS) / 4;
+        gic->gic_gl_intr_trigtype_reg[reg] = data;
+        break;
+
+    case GIC_SH_RMASK_31_0_OFS:
+    case GIC_SH_RMASK_63_32_OFS:
+    case GIC_SH_RMASK_95_64_OFS:
+    case GIC_SH_RMASK_127_96_OFS:
+    case GIC_SH_RMASK_159_128_OFS:
+    case GIC_SH_RMASK_191_160_OFS:
+    case GIC_SH_RMASK_223_192_OFS:
+    case GIC_SH_RMASK_255_224_OFS:
+        reg = (addr - GIC_SH_RMASK_31_0_OFS) / 4;
+        gic->gic_gl_intr_mask_reg[reg] &= ~data;
+        break;
+
+    case GIC_SH_WEDGE_OFS:
+        DPRINTF("addr: %#" PRIx64 ", data: %#" PRIx64 ", size: %#x\n", addr,
+               data, size);
+
+        /* Figure out which VPE/HW Interrupt this maps to */
+        intr = data & 0x7FFFFFFF;
+
+        /* XXXSL  Mask/Enabled Checks */
+        if (data & 0x80000000)
+            qemu_set_irq(gic->irqs[intr], 1);
+        else
+            qemu_set_irq(gic->irqs[intr], 0);
+
+        break;
+
+    case GIC_SH_PEND_31_0_OFS:
+    case GIC_SH_PEND_63_32_OFS:
+    case GIC_SH_PEND_95_64_OFS:
+    case GIC_SH_PEND_127_96_OFS:
+    case GIC_SH_PEND_159_128_OFS:
+    case GIC_SH_PEND_191_160_OFS:
+    case GIC_SH_PEND_223_192_OFS:
+    case GIC_SH_PEND_255_224_OFS:
+        break;
+
+    case GIC_SH_SMASK_31_0_OFS:
+    case GIC_SH_SMASK_63_32_OFS:
+    case GIC_SH_SMASK_95_64_OFS:
+    case GIC_SH_SMASK_127_96_OFS:
+    case GIC_SH_SMASK_159_128_OFS:
+    case GIC_SH_SMASK_191_160_OFS:
+    case GIC_SH_SMASK_223_192_OFS:
+    case GIC_SH_SMASK_255_224_OFS:
+        reg = (addr - GIC_SH_SMASK_31_0_OFS) / 4;
+        gic->gic_gl_intr_mask_reg[reg] |= data;
+        break;
+
+    default:
+        break;
+    }
+
+    /* Other cases */
+    if (addr >= GIC_SH_INTR_MAP_TO_PIN_BASE_OFS
+        && addr <= GIC_SH_MAP_TO_PIN(255)) {
+        reg = (addr - GIC_SH_INTR_MAP_TO_PIN_BASE_OFS) / 4;
+        gic->gic_gl_map_pin[reg] = data;
+    }
+    if (addr >= GIC_SH_INTR_MAP_TO_VPE_BASE_OFS
+        && addr <= GIC_SH_MAP_TO_VPE_REG_OFF(255, 63)) {
+        reg = (addr - GIC_SH_INTR_MAP_TO_VPE_BASE_OFS) / 4;
+        gic->gic_gl_map_vpe[reg] = data;
+    }
+
+    if (addr >= GIC_VPELOCAL_BASE_ADDR && addr < GIC_VPEOTHER_BASE_ADDR) {
+    }
+
+    if (addr >= GIC_VPEOTHER_BASE_ADDR && addr < GIC_USERMODE_BASE_ADDR) {
+    }
+}
+
+static uint64_t
+gcr_read(void *opaque, hwaddr addr, unsigned size)
+{
+    gic_t *gic = (gic_t *) opaque;
+
+    DPRINTF("addr: %#" PRIx64 ", size: %#x\n", addr, size);
+
+    switch (addr) {
+    case GCMP_GCB_GC_OFS:
+        /* Set PCORES to # cores - 1 */
+        return smp_cpus - 1;
+        break;
+
+    case GCMP_GCB_GCMPB_OFS:
+        return GCMP_BASE_ADDR;
+        break;
+
+    case GCMP_GCB_GICBA_OFS:
+        return gic->gcr_gic_base_reg;
+        break;
+
+    default:
+        DPRINTF("Unsupported Reg Read @ offset %#" PRIx64 "\n", addr);
+        return 0;
+    }
+
+    return 0ULL;
+}
+
+static void
+gcr_write(void *opaque, hwaddr addr, uint64_t data, unsigned size)
+{
+    gic_t *gic = (gic_t *) opaque;
+
+    DPRINTF("addr: %#" PRIx64 ", data: %#" PRIx64 ", size: %#x\n", addr, data,
+            size);
+
+    switch (addr) {
+    case GCMP_GCB_GICBA_OFS:
+        gic->gcr_gic_base_reg = data;
+        break;
+
+    default:
+        break;
+    }
+}
+
+
+
+static void
+gic_set_irq(void *opaque, int n_IRQ, int level)
+{
+    int vpe = -1, pin = -1, i;
+    gic_t *gic = (gic_t *) opaque;
+
+    pin = gic->gic_gl_map_pin[n_IRQ] & 0x7;
+
+    for (i = 0; i < NUMVPES; i++) {
+        vpe = gic-> gic_gl_map_vpe[(GIC_SH_MAP_TO_VPE_REG_OFF(n_IRQ, i) - GIC_SH_INTR_MAP_TO_VPE_BASE_OFS) / 4];
+        if (vpe & GIC_SH_MAP_TO_VPE_REG_BIT(i)) {
+            vpe = i;
+            break;
+        }
+    }
+
+    if (pin >= 0 && vpe >= 0) {
+        int offset;
+        DPRINTF("[%s] INTR %d maps to PIN %d on VPE %d\n", (level ? "ASSERT" : "DEASSERT"), n_IRQ, pin, vpe);
+        /* Set the Global PEND register */
+        offset = GIC_INTR_OFS(n_IRQ) / 4;
+        if (level)
+            gic->gic_gl_intr_pending_reg[offset] |= (1 << GIC_INTR_BIT(n_IRQ));
+        else
+            gic->gic_gl_intr_pending_reg[offset] &= ~(1 << GIC_INTR_BIT(n_IRQ));
+
+#ifdef CONFIG_KVM
+        if (kvm_enabled())  {
+            kvm_mips_set_ipi_interrupt (gic->env[vpe], pin+2, level);
+        }
+#endif
+
+        qemu_set_irq(gic->env[vpe]->irq[pin+2], level);
+    }
+}
+
+static void
+gic_reset(void *opaque)
+{
+    int i;
+    gic_t *gic = (gic_t *) opaque;
+
+    /* Rest value is map to pin */
+    for (i = 0; i < 256; i++)
+        gic->gic_gl_map_pin[i] = GIC_MAP_TO_PIN_MSK;
+
+}
+
+static const MemoryRegionOps gic_ops = {
+    .read = gic_read,
+    .write = gic_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static const MemoryRegionOps gcr_ops = {
+    .read = gcr_read,
+    .write = gcr_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+qemu_irq *
+gic_init(uint32_t ncpus, CPUMIPSState *env, MemoryRegion * address_space)
+{
+    CPUMIPSState *next_env;
+    gic_t *gic;
+    uint32_t x;
+
+    if (ncpus > NUMVPES) {
+        fprintf(stderr, "Unable to initialize GIC - ncpus %d > NUMVPES!", ncpus);
+        return NULL;
+    }
+
+    gic = (gic_t *) g_malloc0(sizeof(gic_t));
+
+    /* Register the CPU env for all cpus with the GIC */
+    next_env = env; 
+    for (x = 0; x < ncpus; x++) {
+        if (next_env != NULL) {
+            gic->env[x] = next_env;
+            next_env = next_env->next_cpu;
+        } else {
+            fprintf(stderr, "Unable to initialize GIC - CPUMIPSState for CPU #%d not valid!", x);
+            return NULL;
+        }
+    }
+
+    /* Register GCR & GIC regions */
+    memory_region_init_io(&gic->gcr_mem, &gcr_ops, gic, "GCR",
+                          GCMP_ADDRSPACE_SZ);
+    memory_region_init_io(&gic->gic_mem, &gic_ops, gic, "GIC",
+                          GIC_ADDRSPACE_SZ);
+
+    memory_region_add_subregion(address_space, GCMP_BASE_ADDR, &gic->gcr_mem);
+    memory_region_add_subregion(address_space, GIC_BASE_ADDR, &gic->gic_mem);
+
+    qemu_register_reset(gic_reset, gic);
+
+    gic->irqs = qemu_allocate_irqs(gic_set_irq, gic, GIC_NUM_INTRS);
+
+    return (gic->irqs);
+}
diff --git a/hw/mips_gic.h b/hw/mips_gic.h
new file mode 100644
index 0000000..4a2c828
--- /dev/null
+++ b/hw/mips_gic.h
@@ -0,0 +1,378 @@ 
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2000, 07 MIPS Technologies, Inc.
+ *
+ * GIC Register Definitions
+ *
+ */
+#ifndef _ASM_GICREGS_H
+#define _ASM_GICREGS_H
+
+#undef	GICISBYTELITTLEENDIAN
+
+#define NR_CPUS         8
+/*
+ * GCMP Specific definitions
+ */
+
+/* XXXKYMA: Malta Specific base address */
+#define GCMP_BASE_ADDR          0x1fbf8000ULL
+#define GCMP_ADDRSPACE_SZ       (256 * 1024)
+
+/*
+ * GIC Specific definitions
+ */
+
+/* XXXKYMA: Malta Specific base address */
+#define GIC_BASE_ADDR           0x1bdc0000ULL
+#define GIC_ADDRSPACE_SZ        (128 * 1024)
+
+/* GIC Address Space Offsets */
+#define GIC_SHARED_BASE_ADDR    0x0000
+#define GIC_VPELOCAL_BASE_ADDR  0x8000
+#define GIC_VPEOTHER_BASE_ADDR  0xC000
+#define GIC_USERMODE_BASE_ADDR  0x10000
+
+/* Shared Section Offsets */
+#define GIC_G_INTR_POLARITY_REG0    0x0100
+#define GIC_G_INTR_POLARITY_REG1    0x0104
+#define GIC_G_INTR_TRIGTYPE_REG0    0x0180
+#define GIC_G_INTR_TRIGTYPE_REG1    0x0184
+#define GIC_G_INTR_RESETMASK_REG0   0x0300
+#define GIC_G_INTR_RESETMASK_REG1   0x0304
+#define GIC_G_INTR_SETMASK_REG0     0x0380
+
+/*
+ * MSC01 BIU Specific definitions
+ * FIXME : These should be elsewhere ?
+ */
+#define MSC01_BIU_REG_BASE      0x1bc80000
+#define MSC01_BIU_ADDRSPACE_SZ      (256 * 1024)
+#define MSC01_SC_CFG_OFS        0x0110
+#define MSC01_SC_CFG_GICPRES_MSK    0x00000004
+#define MSC01_SC_CFG_GICPRES_SHF    2
+#define MSC01_SC_CFG_GICENA_SHF     3
+
+/* Constants */
+#define GIC_POL_POS			1
+#define GIC_POL_NEG			0
+#define GIC_TRIG_EDGE			1
+#define GIC_TRIG_LEVEL			0
+
+#define GIC_NUM_INTRS			(24 + NR_CPUS * 2)
+
+#define MSK(n) ((1 << (n)) - 1)
+#define REG32(addr)		(*(volatile unsigned int *) (addr))
+#define REG(base, offs)		REG32((unsigned long)(base) + offs##_##OFS)
+#define REGP(base, phys)	REG32((unsigned long)(base) + (phys))
+
+/* Accessors */
+#define GIC_REG(segment, offset) \
+	REG32(_gic_base + segment##_##SECTION_OFS + offset##_##OFS)
+#define GIC_REG_ADDR(segment, offset) \
+	REG32(_gic_base + segment##_##SECTION_OFS + offset)
+
+#define GIC_ABS_REG(segment, offset) \
+       (_gic_base + segment##_##SECTION_OFS + offset##_##OFS)
+#define GIC_REG_ABS_ADDR(segment, offset) \
+       (_gic_base + segment##_##SECTION_OFS + offset)
+
+#ifdef GICISBYTELITTLEENDIAN
+#define GICREAD(reg, data)	(data) = (reg), (data) = le32_to_cpu(data)
+#define GICWRITE(reg, data)	(reg) = cpu_to_le32(data)
+#define GICBIS(reg, bits)			\
+	({unsigned int data;			\
+		GICREAD(reg, data);		\
+		data |= bits;			\
+		GICWRITE(reg, data);		\
+	})
+
+#else
+#define GICREAD(reg, data)	(data) = (reg)
+#define GICWRITE(reg, data)	(reg) = (data)
+#define GICBIS(reg, bits)	(reg) |= (bits)
+#endif
+
+
+/* GIC Address Space */
+#define SHARED_SECTION_OFS		0x0000
+#define SHARED_SECTION_SIZE		0x8000
+#define VPE_LOCAL_SECTION_OFS		0x8000
+#define VPE_LOCAL_SECTION_SIZE		0x4000
+#define VPE_OTHER_SECTION_OFS		0xc000
+#define VPE_OTHER_SECTION_SIZE		0x4000
+#define USM_VISIBLE_SECTION_OFS		0x10000
+#define USM_VISIBLE_SECTION_SIZE	0x10000
+
+/* Register Map for Shared Section */
+
+#define	GIC_SH_CONFIG_OFS		0x0000
+
+/* Shared Global Counter */
+#define GIC_SH_COUNTER_31_00_OFS	0x0010
+#define GIC_SH_COUNTER_63_32_OFS	0x0014
+#define GIC_SH_REVISIONID_OFS		0x0020
+
+/* Interrupt Polarity */
+#define GIC_SH_POL_31_0_OFS		0x0100
+#define GIC_SH_POL_63_32_OFS		0x0104
+#define GIC_SH_POL_95_64_OFS		0x0108
+#define GIC_SH_POL_127_96_OFS		0x010c
+#define GIC_SH_POL_159_128_OFS		0x0110
+#define GIC_SH_POL_191_160_OFS		0x0114
+#define GIC_SH_POL_223_192_OFS		0x0118
+#define GIC_SH_POL_255_224_OFS		0x011c
+
+/* Edge/Level Triggering */
+#define GIC_SH_TRIG_31_0_OFS		0x0180
+#define GIC_SH_TRIG_63_32_OFS		0x0184
+#define GIC_SH_TRIG_95_64_OFS		0x0188
+#define GIC_SH_TRIG_127_96_OFS		0x018c
+#define GIC_SH_TRIG_159_128_OFS		0x0190
+#define GIC_SH_TRIG_191_160_OFS		0x0194
+#define GIC_SH_TRIG_223_192_OFS		0x0198
+#define GIC_SH_TRIG_255_224_OFS		0x019c
+
+/* Dual Edge Triggering */
+#define GIC_SH_DUAL_31_0_OFS		0x0200
+#define GIC_SH_DUAL_63_32_OFS		0x0204
+#define GIC_SH_DUAL_95_64_OFS		0x0208
+#define GIC_SH_DUAL_127_96_OFS		0x020c
+#define GIC_SH_DUAL_159_128_OFS		0x0210
+#define GIC_SH_DUAL_191_160_OFS		0x0214
+#define GIC_SH_DUAL_223_192_OFS		0x0218
+#define GIC_SH_DUAL_255_224_OFS		0x021c
+
+/* Set/Clear corresponding bit in Edge Detect Register */
+#define GIC_SH_WEDGE_OFS		0x0280
+
+/* Reset Mask - Disables Interrupt */
+#define GIC_SH_RMASK_31_0_OFS		0x0300
+#define GIC_SH_RMASK_63_32_OFS		0x0304
+#define GIC_SH_RMASK_95_64_OFS		0x0308
+#define GIC_SH_RMASK_127_96_OFS		0x030c
+#define GIC_SH_RMASK_159_128_OFS	0x0310
+#define GIC_SH_RMASK_191_160_OFS	0x0314
+#define GIC_SH_RMASK_223_192_OFS	0x0318
+#define GIC_SH_RMASK_255_224_OFS	0x031c
+
+/* Set Mask (WO) - Enables Interrupt */
+#define GIC_SH_SMASK_31_0_OFS		0x0380
+#define GIC_SH_SMASK_63_32_OFS		0x0384
+#define GIC_SH_SMASK_95_64_OFS		0x0388
+#define GIC_SH_SMASK_127_96_OFS		0x038c
+#define GIC_SH_SMASK_159_128_OFS	0x0390
+#define GIC_SH_SMASK_191_160_OFS	0x0394
+#define GIC_SH_SMASK_223_192_OFS	0x0398
+#define GIC_SH_SMASK_255_224_OFS	0x039c
+
+/* Global Interrupt Mask Register (RO) - Bit Set == Interrupt enabled */
+#define GIC_SH_MASK_31_0_OFS		0x0400
+#define GIC_SH_MASK_63_32_OFS		0x0404
+#define GIC_SH_MASK_95_64_OFS		0x0408
+#define GIC_SH_MASK_127_96_OFS		0x040c
+#define GIC_SH_MASK_159_128_OFS		0x0410
+#define GIC_SH_MASK_191_160_OFS		0x0414
+#define GIC_SH_MASK_223_192_OFS		0x0418
+#define GIC_SH_MASK_255_224_OFS		0x041c
+
+/* Pending Global Interrupts (RO) */
+#define GIC_SH_PEND_31_0_OFS		0x0480
+#define GIC_SH_PEND_63_32_OFS		0x0484
+#define GIC_SH_PEND_95_64_OFS		0x0488
+#define GIC_SH_PEND_127_96_OFS		0x048c
+#define GIC_SH_PEND_159_128_OFS		0x0490
+#define GIC_SH_PEND_191_160_OFS		0x0494
+#define GIC_SH_PEND_223_192_OFS		0x0498
+#define GIC_SH_PEND_255_224_OFS		0x049c
+
+#define GIC_SH_INTR_MAP_TO_PIN_BASE_OFS	0x0500
+
+/* Maps Interrupt X to a Pin */
+#define GIC_SH_MAP_TO_PIN(intr) \
+	(GIC_SH_INTR_MAP_TO_PIN_BASE_OFS + (4 * intr))
+
+#define GIC_SH_INTR_MAP_TO_VPE_BASE_OFS	0x2000
+
+/* Maps Interrupt X to a VPE */
+#define GIC_SH_MAP_TO_VPE_REG_OFF(intr, vpe) \
+	(GIC_SH_INTR_MAP_TO_VPE_BASE_OFS + (32 * (intr)) + (((vpe) / 32) * 4))
+#define GIC_SH_MAP_TO_VPE_REG_BIT(vpe)	(1 << ((vpe) % 32))
+
+/* Convert an interrupt number to a byte offset/bit for multi-word registers */
+#define GIC_INTR_OFS(intr) (((intr) / 32)*4)
+#define GIC_INTR_BIT(intr) ((intr) % 32)
+
+/* Polarity : Reset Value is always 0 */
+#define GIC_SH_SET_POLARITY_OFS		0x0100
+#define GIC_SET_POLARITY(intr, pol) \
+	GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_POLARITY_OFS + \
+		GIC_INTR_OFS(intr)), (pol) << GIC_INTR_BIT(intr))
+
+/* Triggering : Reset Value is always 0 */
+#define GIC_SH_SET_TRIGGER_OFS		0x0180
+#define GIC_SET_TRIGGER(intr, trig) \
+	GICBIS(GIC_REG_ADDR(SHARED, GIC_SH_SET_TRIGGER_OFS + \
+		GIC_INTR_OFS(intr)), (trig) << GIC_INTR_BIT(intr))
+
+/* Mask manipulation */
+#define GIC_SH_SMASK_OFS		0x0380
+#define GIC_SET_INTR_MASK(intr) \
+	GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_SMASK_OFS + \
+		GIC_INTR_OFS(intr)), 1 << GIC_INTR_BIT(intr))
+#define GIC_SH_RMASK_OFS		0x0300
+#define GIC_CLR_INTR_MASK(intr) \
+	GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_RMASK_OFS + \
+		GIC_INTR_OFS(intr)), 1 << GIC_INTR_BIT(intr))
+
+/* Register Map for Local Section */
+#define GIC_VPE_CTL_OFS			0x0000
+#define GIC_VPE_PEND_OFS		0x0004
+#define GIC_VPE_MASK_OFS		0x0008
+#define GIC_VPE_RMASK_OFS		0x000c
+#define GIC_VPE_SMASK_OFS		0x0010
+#define GIC_VPE_WD_MAP_OFS		0x0040
+#define GIC_VPE_COMPARE_MAP_OFS		0x0044
+#define GIC_VPE_TIMER_MAP_OFS		0x0048
+#define GIC_VPE_PERFCTR_MAP_OFS		0x0050
+#define GIC_VPE_SWINT0_MAP_OFS		0x0054
+#define GIC_VPE_SWINT1_MAP_OFS		0x0058
+#define GIC_VPE_OTHER_ADDR_OFS		0x0080
+#define GIC_VPE_WD_CONFIG0_OFS		0x0090
+#define GIC_VPE_WD_COUNT0_OFS		0x0094
+#define GIC_VPE_WD_INITIAL0_OFS		0x0098
+#define GIC_VPE_COMPARE_LO_OFS		0x00a0
+#define GIC_VPE_COMPARE_HI		0x00a4
+
+#define GIC_VPE_EIC_SHADOW_SET_BASE	0x0100
+#define GIC_VPE_EIC_SS(intr) \
+	(GIC_EIC_SHADOW_SET_BASE + (4 * intr))
+
+#define GIC_VPE_EIC_VEC_BASE		0x0800
+#define GIC_VPE_EIC_VEC(intr) \
+	(GIC_VPE_EIC_VEC_BASE + (4 * intr))
+
+#define GIC_VPE_TENABLE_NMI_OFS		0x1000
+#define GIC_VPE_TENABLE_YQ_OFS		0x1004
+#define GIC_VPE_TENABLE_INT_31_0_OFS	0x1080
+#define GIC_VPE_TENABLE_INT_63_32_OFS	0x1084
+
+/* User Mode Visible Section Register Map */
+#define GIC_UMV_SH_COUNTER_31_00_OFS	0x0000
+#define GIC_UMV_SH_COUNTER_63_32_OFS	0x0004
+
+/* Masks */
+#define GIC_SH_CONFIG_COUNTSTOP_SHF	28
+#define GIC_SH_CONFIG_COUNTSTOP_MSK	(MSK(1) << GIC_SH_CONFIG_COUNTSTOP_SHF)
+
+#define GIC_SH_CONFIG_COUNTBITS_SHF	24
+#define GIC_SH_CONFIG_COUNTBITS_MSK	(MSK(4) << GIC_SH_CONFIG_COUNTBITS_SHF)
+
+#define GIC_SH_CONFIG_NUMINTRS_SHF	16
+#define GIC_SH_CONFIG_NUMINTRS_MSK	(MSK(8) << GIC_SH_CONFIG_NUMINTRS_SHF)
+
+#define GIC_SH_CONFIG_NUMVPES_SHF	0
+#define GIC_SH_CONFIG_NUMVPES_MSK	(MSK(8) << GIC_SH_CONFIG_NUMVPES_SHF)
+
+#define GIC_SH_WEDGE_SET(intr)		(intr | (0x1 << 31))
+#define GIC_SH_WEDGE_CLR(intr)		(intr & ~(0x1 << 31))
+
+#define GIC_MAP_TO_PIN_SHF		31
+#define GIC_MAP_TO_PIN_MSK		(MSK(1) << GIC_MAP_TO_PIN_SHF)
+#define GIC_MAP_TO_NMI_SHF		30
+#define GIC_MAP_TO_NMI_MSK		(MSK(1) << GIC_MAP_TO_NMI_SHF)
+#define GIC_MAP_TO_YQ_SHF		29
+#define GIC_MAP_TO_YQ_MSK		(MSK(1) << GIC_MAP_TO_YQ_SHF)
+#define GIC_MAP_SHF			0
+#define GIC_MAP_MSK			(MSK(6) << GIC_MAP_SHF)
+
+/* GIC_VPE_CTL Masks */
+#define GIC_VPE_CTL_PERFCNT_RTBL_SHF	2
+#define GIC_VPE_CTL_PERFCNT_RTBL_MSK	(MSK(1) << GIC_VPE_CTL_PERFCNT_RTBL_SHF)
+#define GIC_VPE_CTL_TIMER_RTBL_SHF	1
+#define GIC_VPE_CTL_TIMER_RTBL_MSK	(MSK(1) << GIC_VPE_CTL_TIMER_RTBL_SHF)
+#define GIC_VPE_CTL_EIC_MODE_SHF	0
+#define GIC_VPE_CTL_EIC_MODE_MSK	(MSK(1) << GIC_VPE_CTL_EIC_MODE_SHF)
+
+/* GIC_VPE_PEND Masks */
+#define GIC_VPE_PEND_WD_SHF		0
+#define GIC_VPE_PEND_WD_MSK		(MSK(1) << GIC_VPE_PEND_WD_SHF)
+#define GIC_VPE_PEND_CMP_SHF		1
+#define GIC_VPE_PEND_CMP_MSK		(MSK(1) << GIC_VPE_PEND_CMP_SHF)
+#define GIC_VPE_PEND_TIMER_SHF		2
+#define GIC_VPE_PEND_TIMER_MSK		(MSK(1) << GIC_VPE_PEND_TIMER_SHF)
+#define GIC_VPE_PEND_PERFCOUNT_SHF	3
+#define GIC_VPE_PEND_PERFCOUNT_MSK	(MSK(1) << GIC_VPE_PEND_PERFCOUNT_SHF)
+#define GIC_VPE_PEND_SWINT0_SHF		4
+#define GIC_VPE_PEND_SWINT0_MSK		(MSK(1) << GIC_VPE_PEND_SWINT0_SHF)
+#define GIC_VPE_PEND_SWINT1_SHF		5
+#define GIC_VPE_PEND_SWINT1_MSK		(MSK(1) << GIC_VPE_PEND_SWINT1_SHF)
+
+/* GIC_VPE_RMASK Masks */
+#define GIC_VPE_RMASK_WD_SHF		0
+#define GIC_VPE_RMASK_WD_MSK		(MSK(1) << GIC_VPE_RMASK_WD_SHF)
+#define GIC_VPE_RMASK_CMP_SHF		1
+#define GIC_VPE_RMASK_CMP_MSK		(MSK(1) << GIC_VPE_RMASK_CMP_SHF)
+#define GIC_VPE_RMASK_TIMER_SHF		2
+#define GIC_VPE_RMASK_TIMER_MSK		(MSK(1) << GIC_VPE_RMASK_TIMER_SHF)
+#define GIC_VPE_RMASK_PERFCNT_SHF	3
+#define GIC_VPE_RMASK_PERFCNT_MSK	(MSK(1) << GIC_VPE_RMASK_PERFCNT_SHF)
+#define GIC_VPE_RMASK_SWINT0_SHF	4
+#define GIC_VPE_RMASK_SWINT0_MSK	(MSK(1) << GIC_VPE_RMASK_SWINT0_SHF)
+#define GIC_VPE_RMASK_SWINT1_SHF	5
+#define GIC_VPE_RMASK_SWINT1_MSK	(MSK(1) << GIC_VPE_RMASK_SWINT1_SHF)
+
+/* GIC_VPE_SMASK Masks */
+#define GIC_VPE_SMASK_WD_SHF		0
+#define GIC_VPE_SMASK_WD_MSK		(MSK(1) << GIC_VPE_SMASK_WD_SHF)
+#define GIC_VPE_SMASK_CMP_SHF		1
+#define GIC_VPE_SMASK_CMP_MSK		(MSK(1) << GIC_VPE_SMASK_CMP_SHF)
+#define GIC_VPE_SMASK_TIMER_SHF		2
+#define GIC_VPE_SMASK_TIMER_MSK		(MSK(1) << GIC_VPE_SMASK_TIMER_SHF)
+#define GIC_VPE_SMASK_PERFCNT_SHF	3
+#define GIC_VPE_SMASK_PERFCNT_MSK	(MSK(1) << GIC_VPE_SMASK_PERFCNT_SHF)
+#define GIC_VPE_SMASK_SWINT0_SHF	4
+#define GIC_VPE_SMASK_SWINT0_MSK	(MSK(1) << GIC_VPE_SMASK_SWINT0_SHF)
+#define GIC_VPE_SMASK_SWINT1_SHF	5
+#define GIC_VPE_SMASK_SWINT1_MSK	(MSK(1) << GIC_VPE_SMASK_SWINT1_SHF)
+
+/*
+ * Set the Mapping of Interrupt X to a VPE.
+ */
+#define GIC_SH_MAP_TO_VPE_SMASK(intr, vpe) \
+	GICWRITE(GIC_REG_ADDR(SHARED, GIC_SH_MAP_TO_VPE_REG_OFF(intr, vpe)), \
+		 GIC_SH_MAP_TO_VPE_REG_BIT(vpe))
+
+struct gic_pcpu_mask {
+       DECLARE_BITMAP(pcpu_mask, GIC_NUM_INTRS);
+};
+
+struct gic_pending_regs {
+       DECLARE_BITMAP(pending, GIC_NUM_INTRS);
+};
+
+struct gic_intrmask_regs {
+       DECLARE_BITMAP(intrmask, GIC_NUM_INTRS);
+};
+
+/*
+ * Interrupt Meta-data specification. The ipiflag helps
+ * in building ipi_map.
+ */
+struct gic_intr_map {
+	unsigned int cpunum;	/* Directed to this CPU */
+#define GIC_UNUSED		0xdead			/* Dummy data */
+	unsigned int pin;	/* Directed to this Pin */
+	unsigned int polarity;	/* Polarity : +/-	*/
+	unsigned int trigtype;	/* Trigger  : Edge/Levl */
+	unsigned int flags;	/* Misc flags	*/
+#define GIC_FLAG_IPI           0x01
+#define GIC_FLAG_TRANSPARENT   0x02
+};
+
+qemu_irq *gic_init (uint32_t ncpus, CPUMIPSState *env, MemoryRegion *address_space);
+
+#endif /* _ASM_GICREGS_H */