Registers a 16x64kB reserved iova region. Currently this iova
region is used by the kernel to map host MSI controller frames
(GICv2m, GITS_TRANSLATER).
Signed-off-by: Eric Auger <eric.au...@linaro.org>
---
hw/arm/virt.c | 10 ++++++++++
include/hw/arm/virt.h | 1 +
2 files changed, 11 insertions(+)
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 3839c68..7eaf8be 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -125,6 +125,7 @@ static const MemMapEntry a15memmap[] = {
[VIRT_GPIO] = { 0x09030000, 0x00001000 },
[VIRT_SECURE_UART] = { 0x09040000, 0x00001000 },
[VIRT_MMIO] = { 0x0a000000, 0x00000200 },
+ [VIRT_RESERVED] = { 0x0be00000, 0x00100000 },
/* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
[VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 },
[VIRT_PCIE_MMIO] = { 0x10000000, 0x2eff0000 },
@@ -815,6 +816,8 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq
*pic,
hwaddr size_pio = vbi->memmap[VIRT_PCIE_PIO].size;
hwaddr base_ecam = vbi->memmap[VIRT_PCIE_ECAM].base;
hwaddr size_ecam = vbi->memmap[VIRT_PCIE_ECAM].size;
+ hwaddr base_reserved = vbi->memmap[VIRT_RESERVED].base;
+ hwaddr size_reserved = vbi->memmap[VIRT_RESERVED].size;
hwaddr base = base_mmio;
int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
int irq = vbi->irqmap[VIRT_PCIE];
@@ -822,6 +825,7 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq
*pic,
MemoryRegion *mmio_reg;
MemoryRegion *ecam_alias;
MemoryRegion *ecam_reg;
+ MemoryRegion *reserved_reg;
DeviceState *dev;
char *nodename;
int i;
@@ -838,6 +842,12 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq
*pic,
ecam_reg, 0, size_ecam);
memory_region_add_subregion(get_system_memory(), base_ecam, ecam_alias);
+ reserved_reg = g_new0(MemoryRegion, 1);
+ memory_region_init_reserved_iova(reserved_reg, OBJECT(dev),
"reserved-iova",
+ size_reserved, &error_fatal);
+ memory_region_add_subregion(get_system_memory(), base_reserved,
+ reserved_reg);
+
/* Map the MMIO window into system address space so as to expose
* the section of PCI MMIO space which starts at the same base address
* (ie 1:1 mapping for that part of PCI MMIO space visible through
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index 1ce7847..194871b 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -61,6 +61,7 @@ enum {
VIRT_PCIE_MMIO_HIGH,
VIRT_GPIO,
VIRT_SECURE_UART,
+ VIRT_RESERVED,
};
typedef struct MemMapEntry {
--
1.9.1
