---
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
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 <sanj...@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 */
--
1.7.11.3
