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Diffstat (limited to 'hw/openpic.c')
-rw-r--r--hw/openpic.c338
1 files changed, 226 insertions, 112 deletions
diff --git a/hw/openpic.c b/hw/openpic.c
index 0a4379f..20a479c 100644
--- a/hw/openpic.c
+++ b/hw/openpic.c
@@ -56,7 +56,7 @@ static const int debug_openpic = 0;
} \
} while (0)
-#define MAX_CPU 15
+#define MAX_CPU 32
#define MAX_SRC 256
#define MAX_TMR 4
#define MAX_IPI 4
@@ -66,6 +66,7 @@ static const int debug_openpic = 0;
/* 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
@@ -74,6 +75,8 @@ static const int debug_openpic = 0;
#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 (MAX_SRC * 0x20)
#define OPENPIC_CPU_REG_START 0x20000
@@ -94,33 +97,17 @@ static const int debug_openpic = 0;
/* First doorbell IRQ */
#define RAVEN_DBL_IRQ (RAVEN_IPI_IRQ + (RAVEN_MAX_CPU * RAVEN_MAX_IPI))
-/* FSL_MPIC_20 */
-#define FSL_MPIC_20_MAX_CPU 1
-#define FSL_MPIC_20_MAX_EXT 12
-#define FSL_MPIC_20_MAX_INT 64
-#define FSL_MPIC_20_MAX_IRQ MAX_IRQ
+typedef struct FslMpicInfo {
+ int max_ext;
+} FslMpicInfo;
-/* Interrupt definitions */
-/* IRQs, accessible through the IRQ region */
-#define FSL_MPIC_20_EXT_IRQ 0x00
-#define FSL_MPIC_20_INT_IRQ 0x10
-#define FSL_MPIC_20_MSG_IRQ 0xb0
-#define FSL_MPIC_20_MSI_IRQ 0xe0
-/* These are available through separate regions, but
- for simplicity's sake mapped into the same number space */
-#define FSL_MPIC_20_TMR_IRQ 0x100
-#define FSL_MPIC_20_IPI_IRQ 0x104
+static FslMpicInfo fsl_mpic_20 = {
+ .max_ext = 12,
+};
-/*
- * Block Revision Register1 (BRR1): QEMU does not fully emulate
- * any version on MPIC. So to start with, set the IP version to 0.
- *
- * NOTE: This is Freescale MPIC specific register. Keep it here till
- * this code is refactored for different variants of OPENPIC and MPIC.
- */
-#define FSL_BRR1_IPID (0x0040 << 16) /* 16 bit IP-block ID */
-#define FSL_BRR1_IPMJ (0x00 << 8) /* 8 bit IP major number */
-#define FSL_BRR1_IPMN 0x00 /* 8 bit IP minor number */
+static FslMpicInfo fsl_mpic_42 = {
+ .max_ext = 12,
+};
#define FRR_NIRQ_SHIFT 16
#define FRR_NCPU_SHIFT 8
@@ -146,6 +133,49 @@ static const int debug_openpic = 0;
#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)
@@ -230,6 +260,7 @@ typedef struct OpenPICState {
MemoryRegion mem;
/* Behavior control */
+ FslMpicInfo *fsl;
uint32_t model;
uint32_t flags;
uint32_t nb_irqs;
@@ -243,7 +274,7 @@ typedef struct OpenPICState {
uint32_t mpic_mode_mask;
/* Sub-regions */
- MemoryRegion sub_io_mem[5];
+ MemoryRegion sub_io_mem[6];
/* Global registers */
uint32_t frr; /* Feature reporting register */
@@ -558,6 +589,15 @@ 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;
@@ -608,6 +648,19 @@ static inline void write_IRQreg_idr(OpenPICState *opp, int n_IRQ, uint32_t val)
}
}
+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;
@@ -874,17 +927,20 @@ static void openpic_src_write(void *opaque, hwaddr addr, uint64_t val,
DPRINTF("%s: addr %#" HWADDR_PRIx " <= %08" PRIx64 "\n",
__func__, addr, val);
- if (addr & 0xF) {
- return;
- }
- addr = addr & 0xFFF0;
+
+ addr = addr & 0xffff;
idx = addr >> 5;
- if (addr & 0x10) {
- /* EXDE / IFEDE / IEEDE */
- write_IRQreg_idr(opp, idx, val);
- } else {
- /* EXVP / IFEVP / IEEVP */
+
+ 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;
}
}
@@ -896,20 +952,23 @@ static uint64_t openpic_src_read(void *opaque, uint64_t addr, unsigned len)
DPRINTF("%s: addr %#" HWADDR_PRIx "\n", __func__, addr);
retval = 0xFFFFFFFF;
- if (addr & 0xF) {
- return retval;
- }
- addr = addr & 0xFFF0;
+
+ addr = addr & 0xffff;
idx = addr >> 5;
- if (addr & 0x10) {
- /* EXDE / IFEDE / IEEDE */
- retval = read_IRQreg_idr(opp, idx);
- } else {
- /* EXVP / IFEVP / IEEVP */
+
+ 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);
+ DPRINTF("%s: => 0x%08x\n", __func__, retval);
return retval;
}
@@ -977,6 +1036,26 @@ static uint64_t openpic_msi_read(void *opaque, hwaddr addr, unsigned size)
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)
{
@@ -1242,19 +1321,19 @@ static const MemoryRegionOps openpic_src_ops_be = {
},
};
-static const MemoryRegionOps openpic_msi_ops_le = {
+static const MemoryRegionOps openpic_msi_ops_be = {
.read = openpic_msi_read,
.write = openpic_msi_write,
- .endianness = DEVICE_LITTLE_ENDIAN,
+ .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,
+static const MemoryRegionOps openpic_summary_ops_be = {
+ .read = openpic_summary_read,
+ .write = openpic_summary_write,
.endianness = DEVICE_BIG_ENDIAN,
.impl = {
.min_access_size = 4,
@@ -1387,78 +1466,128 @@ static int openpic_load(QEMUFile* f, void *opaque, int version_id)
typedef struct MemReg {
const char *name;
MemoryRegionOps const *ops;
- bool map;
hwaddr start_addr;
ram_addr_t size;
} MemReg;
+static void fsl_common_init(OpenPICState *opp)
+{
+ int i;
+ int virq = 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 = MAX_IRQ;
+
+ opp->irq_ipi0 = virq;
+ virq += MAX_IPI;
+ opp->irq_tim0 = virq;
+ virq += MAX_TMR;
+
+ assert(virq <= 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 < MAX_SRC; i++) {
+ opp->src[i].type = IRQ_TYPE_FSLINT;
+ opp->src[i].level = true;
+ }
+
+ /* timers and IPIs */
+ for (i = 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], list->ops, opp,
+ list->name, list->size);
+
+ memory_region_add_subregion(&opp->mem, list->start_addr,
+ &opp->sub_io_mem[*count]);
+
+ (*count)++;
+ list++;
+ }
+}
+
static int openpic_init(SysBusDevice *dev)
{
OpenPICState *opp = FROM_SYSBUS(typeof (*opp), dev);
int i, j;
- MemReg list_le[] = {
- {"glb", &openpic_glb_ops_le, true,
+ 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, true,
+ {"tmr", &openpic_tmr_ops_le,
OPENPIC_TMR_REG_START, OPENPIC_TMR_REG_SIZE},
- {"msi", &openpic_msi_ops_le, true,
- OPENPIC_MSI_REG_START, OPENPIC_MSI_REG_SIZE},
- {"src", &openpic_src_ops_le, true,
+ {"src", &openpic_src_ops_le,
OPENPIC_SRC_REG_START, OPENPIC_SRC_REG_SIZE},
- {"cpu", &openpic_cpu_ops_le, true,
+ {"cpu", &openpic_cpu_ops_le,
OPENPIC_CPU_REG_START, OPENPIC_CPU_REG_SIZE},
+ {NULL}
};
- MemReg list_be[] = {
- {"glb", &openpic_glb_ops_be, true,
+ static const MemReg list_be[] = {
+ {"glb", &openpic_glb_ops_be,
OPENPIC_GLB_REG_START, OPENPIC_GLB_REG_SIZE},
- {"tmr", &openpic_tmr_ops_be, true,
+ {"tmr", &openpic_tmr_ops_be,
OPENPIC_TMR_REG_START, OPENPIC_TMR_REG_SIZE},
- {"msi", &openpic_msi_ops_be, true,
- OPENPIC_MSI_REG_START, OPENPIC_MSI_REG_SIZE},
- {"src", &openpic_src_ops_be, true,
+ {"src", &openpic_src_ops_be,
OPENPIC_SRC_REG_START, OPENPIC_SRC_REG_SIZE},
- {"cpu", &openpic_cpu_ops_be, true,
+ {"cpu", &openpic_cpu_ops_be,
OPENPIC_CPU_REG_START, OPENPIC_CPU_REG_SIZE},
+ {NULL}
};
- MemReg *list;
+ 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}
+ };
+
+ memory_region_init(&opp->mem, "openpic", 0x40000);
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->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 = FSL_MPIC_20_MAX_IRQ;
- opp->irq_ipi0 = FSL_MPIC_20_IPI_IRQ;
- opp->irq_tim0 = FSL_MPIC_20_TMR_IRQ;
- opp->irq_msi = FSL_MPIC_20_MSI_IRQ;
- opp->brr1 = FSL_BRR1_IPID | FSL_BRR1_IPMJ | FSL_BRR1_IPMN;
- /* XXX really only available as of MPIC 4.0 */
- opp->mpic_mode_mask = GCR_MODE_PROXY;
+ opp->mpic_mode_mask = GCR_MODE_MIXED;
- msi_supported = true;
- list = list_be;
+ fsl_common_init(opp);
+ map_list(opp, list_be, &list_count);
+ map_list(opp, list_fsl, &list_count);
- for (i = 0; i < FSL_MPIC_20_MAX_EXT; i++) {
- opp->src[i].level = false;
- }
+ break;
- /* Internal interrupts, including message and MSI */
- for (i = 16; i < MAX_SRC; i++) {
- opp->src[i].type = IRQ_TYPE_FSLINT;
- opp->src[i].level = true;
- }
+ 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;
- /* timers and IPIs */
- for (i = MAX_SRC; i < MAX_IRQ; i++) {
- opp->src[i].type = IRQ_TYPE_FSLSPECIAL;
- opp->src[i].level = false;
- }
+ fsl_common_init(opp);
+ map_list(opp, list_be, &list_count);
+ map_list(opp, list_fsl, &list_count);
break;
@@ -1475,29 +1604,14 @@ static int openpic_init(SysBusDevice *dev)
opp->irq_tim0 = RAVEN_TMR_IRQ;
opp->brr1 = -1;
opp->mpic_mode_mask = GCR_MODE_MIXED;
- list = list_le;
- /* Don't map MSI region */
- list[2].map = false;
/* Only UP supported today */
if (opp->nb_cpus != 1) {
return -EINVAL;
}
- break;
- }
-
- memory_region_init(&opp->mem, "openpic", 0x40000);
- for (i = 0; i < ARRAY_SIZE(list_le); i++) {
- if (!list[i].map) {
- continue;
- }
-
- memory_region_init_io(&opp->sub_io_mem[i], list[i].ops, opp,
- list[i].name, list[i].size);
-
- memory_region_add_subregion(&opp->mem, list[i].start_addr,
- &opp->sub_io_mem[i]);
+ map_list(opp, list_le, &list_count);
+ break;
}
for (i = 0; i < opp->nb_cpus; i++) {
generated by cgit v1.1 at 2024-12-24 12:33:35 +0000