PCIMAP controls how PCILO and PCIHi regions map into
PCI memory space.
Signed-off-by: Jiaxun Yang <jiaxun.y...@flygoat.com>
---
hw/pci-host/bonito.c | 37 ++++++++++++++++++++++++++++++++-----
1 file changed, 32 insertions(+), 5 deletions(-)
diff --git a/hw/pci-host/bonito.c b/hw/pci-host/bonito.c
index
a599a1db4c068325b8c1aa8fb4a45f6b299b581b..f509f22df90ff7ed31ff5387a0acc239c22fd5f6
100644
--- a/hw/pci-host/bonito.c
+++ b/hw/pci-host/bonito.c
@@ -137,6 +137,12 @@ FIELD(BONGENCFG, PCIQUEUE, 12, 1)
/* 4. PCI address map control */
#define BONITO_PCIMAP (0x10 >> 2) /* 0x110 */
+REG32(PCIMAP, 0x110)
+FIELD(PCIMAP, LO0, 0, 6)
+FIELD(PCIMAP, LO1, 6, 6)
+FIELD(PCIMAP, LO2, 12, 6)
+FIELD(PCIMAP, 2, 18, 1)
+
#define BONITO_PCIMEMBASECFG (0x14 >> 2) /* 0x114 */
#define BONITO_PCIMAP_CFG (0x18 >> 2) /* 0x118 */
@@ -245,7 +251,6 @@ struct PCIBonitoState {
MemoryRegion iomem_cop;
MemoryRegion bonito_pciio;
MemoryRegion bonito_localio;
-
};
typedef struct PCIBonitoState PCIBonitoState;
@@ -254,6 +259,8 @@ struct BonitoState {
qemu_irq *pic;
PCIBonitoState *pci_dev;
MemoryRegion pci_mem;
+ MemoryRegion *pcimem_lo_alias;
+ MemoryRegion *pcimem_hi_alias;
};
#define TYPE_PCI_BONITO "Bonito"
@@ -293,6 +300,20 @@ static void bonito_set_irq(void *opaque, int irq, int
level)
bonito_update_irq(s);
}
+static void bonito_update_pcimap(PCIBonitoState *s)
+{
+ uint32_t pcimap = s->regs[BONITO_PCIMAP];
+
+ memory_region_set_alias_offset(&s->pcihost->pcimem_lo_alias[0],
+ FIELD_EX32(pcimap, PCIMAP, LO0) << 26);
+ memory_region_set_alias_offset(&s->pcihost->pcimem_lo_alias[1],
+ FIELD_EX32(pcimap, PCIMAP, LO1) << 26);
+ memory_region_set_alias_offset(&s->pcihost->pcimem_lo_alias[2],
+ FIELD_EX32(pcimap, PCIMAP, LO2) << 26);
+ memory_region_set_alias_offset(s->pcihost->pcimem_hi_alias,
+ FIELD_EX32(pcimap, PCIMAP, 2) << 31);
+}
+
static void bonito_writel(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
@@ -308,7 +329,6 @@ static void bonito_writel(void *opaque, hwaddr addr,
case BONITO_BONPONCFG:
case BONITO_IODEVCFG:
case BONITO_SDCFG:
- case BONITO_PCIMAP:
case BONITO_PCIMEMBASECFG:
case BONITO_PCIMAP_CFG:
case BONITO_GPIODATA:
@@ -330,6 +350,10 @@ static void bonito_writel(void *opaque, hwaddr addr,
case BONITO_MEMSIZE:
s->regs[saddr] = val;
break;
+ case BONITO_PCIMAP:
+ s->regs[BONITO_PCIMAP] = val;
+ bonito_update_pcimap(s);
+ break;
case BONITO_BONGENCFG:
if (!(s->regs[saddr] & 0x04) && (val & 0x04)) {
reset = 1; /* bit 2 jump from 0 to 1 cause reset */
@@ -664,6 +688,8 @@ static void bonito_host_realize(DeviceState *dev, Error
**errp)
g_free(name);
}
+ bs->pcimem_lo_alias = pcimem_lo_alias;
+
create_unimplemented_device("pci.io", BONITO_PCIIO_BASE, 1 * MiB);
}
@@ -673,7 +699,7 @@ static void bonito_pci_realize(PCIDevice *dev, Error **errp)
MemoryRegion *host_mem = get_system_memory();
PCIHostState *phb = PCI_HOST_BRIDGE(s->pcihost);
BonitoState *bs = s->pcihost;
- MemoryRegion *pcimem_alias = g_new(MemoryRegion, 1);
+ MemoryRegion *pcimem_hi_alias = g_new(MemoryRegion, 1);
/*
* Bonito North Bridge, built on FPGA,
@@ -730,9 +756,10 @@ static void bonito_pci_realize(PCIDevice *dev, Error
**errp)
create_unimplemented_device("IOCS[3]", BONITO_DEV_BASE + 3 * 256 * KiB,
256 * KiB);
- memory_region_init_alias(pcimem_alias, NULL, "pci.mem.alias",
+ memory_region_init_alias(pcimem_hi_alias, NULL, "pci.memhi.alias",
&bs->pci_mem, 0, BONITO_PCIHI_SIZE);
- memory_region_add_subregion(host_mem, BONITO_PCIHI_BASE, pcimem_alias);
+ memory_region_add_subregion(host_mem, BONITO_PCIHI_BASE, pcimem_hi_alias);
+ bs->pcimem_hi_alias = pcimem_hi_alias;
create_unimplemented_device("PCI_2",
(hwaddr)BONITO_PCIHI_BASE + BONITO_PCIHI_SIZE,
2 * GiB);
--
Git-154)
