@@ -45,6 +45,7 @@
#include "hw/pci-host/gpex.h"
#define NUM_VIRTIO_TRANSPORTS 32
+#define NUM_GICV2M_SPIS 64
/* Number of external interrupt lines to configure the GIC with */
#define NUM_IRQS 128
@@ -71,6 +72,7 @@ enum {
VIRT_RTC,
VIRT_FW_CFG,
VIRT_PCIE,
+ VIRT_GIC_V2M,
};
typedef struct MemMapEntry {
@@ -88,6 +90,7 @@ typedef struct VirtBoardInfo {
int fdt_size;
uint32_t clock_phandle;
uint32_t gic_phandle;
+ uint32_t v2m_phandle;
} VirtBoardInfo;
typedef struct {
@@ -127,6 +130,7 @@ static const MemMapEntry a15memmap[] = {
/* GIC distributor and CPU interfaces sit inside the CPU peripheral space */
[VIRT_GIC_DIST] = { 0x08000000, 0x00010000 },
[VIRT_GIC_CPU] = { 0x08010000, 0x00010000 },
+ [VIRT_GIC_V2M] = { 0x08020000, 0x00001000 },
[VIRT_UART] = { 0x09000000, 0x00001000 },
[VIRT_RTC] = { 0x09010000, 0x00001000 },
[VIRT_FW_CFG] = { 0x09020000, 0x0000000a },
@@ -148,6 +152,7 @@ static const int a15irqmap[] = {
[VIRT_RTC] = 2,
[VIRT_PCIE] = 3, /* ... to 6 */
[VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
+ [VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */
};
static VirtBoardInfo machines[] = {
@@ -323,9 +328,21 @@ static void fdt_add_cpu_nodes(const VirtBoardInfo *vbi)
}
}
-static void fdt_add_gic_node(VirtBoardInfo *vbi)
+static void fdt_add_v2m_gic_node(VirtBoardInfo *vbi)
{
+ vbi->v2m_phandle = qemu_fdt_alloc_phandle(vbi->fdt);
+ qemu_fdt_add_subnode(vbi->fdt, "/intc/v2m");
+ qemu_fdt_setprop_string(vbi->fdt, "/intc/v2m", "compatible",
+ "arm,gic-v2m-frame");
+ qemu_fdt_setprop(vbi->fdt, "/intc/v2m", "msi-controller", NULL, 0);
+ qemu_fdt_setprop_sized_cells(vbi->fdt, "/intc/v2m", "reg",
+ 2, vbi->memmap[VIRT_GIC_V2M].base,
+ 2, vbi->memmap[VIRT_GIC_V2M].size);
+ qemu_fdt_setprop_cell(vbi->fdt, "/intc/v2m", "phandle", vbi->v2m_phandle);
+}
+static void fdt_add_gic_node(VirtBoardInfo *vbi)
+{
vbi->gic_phandle = qemu_fdt_alloc_phandle(vbi->fdt);
qemu_fdt_setprop_cell(vbi->fdt, "/", "interrupt-parent", vbi->gic_phandle);
@@ -340,9 +357,31 @@ static void fdt_add_gic_node(VirtBoardInfo *vbi)
2, vbi->memmap[VIRT_GIC_DIST].size,
2, vbi->memmap[VIRT_GIC_CPU].base,
2, vbi->memmap[VIRT_GIC_CPU].size);
+ qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#address-cells", 0x2);
+ qemu_fdt_setprop_cell(vbi->fdt, "/intc", "#size-cells", 0x2);
+ qemu_fdt_setprop(vbi->fdt, "/intc", "ranges", NULL, 0);
qemu_fdt_setprop_cell(vbi->fdt, "/intc", "phandle", vbi->gic_phandle);
}
+static void create_v2m(VirtBoardInfo *vbi, qemu_irq *pic)
+{
+ int i;
+ int irq = vbi->irqmap[VIRT_GIC_V2M];
+ DeviceState *dev;
+
+ dev = qdev_create(NULL, "gicv2m");
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, vbi->memmap[VIRT_GIC_V2M].base);
+ qdev_prop_set_uint32(dev, "base-spi", irq);
+ qdev_prop_set_uint32(dev, "num-spi", NUM_GICV2M_SPIS);
+ qdev_init_nofail(dev);
+
+ for (i = 0; i < NUM_GICV2M_SPIS; i++) {
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, pic[irq + i]);
+ }
+
+ fdt_add_v2m_gic_node(vbi);
+}
+
static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic)
{
/* We create a standalone GIC v2 */
@@ -391,6 +430,8 @@ static void create_gic(VirtBoardInfo *vbi, qemu_irq *pic)
}
fdt_add_gic_node(vbi);
+
+ create_v2m(vbi, pic);
}
static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic)
@@ -700,6 +741,8 @@ static void create_pcie(const VirtBoardInfo *vbi, qemu_irq *pic)
qemu_fdt_setprop_cells(vbi->fdt, nodename, "bus-range", 0,
nr_pcie_buses - 1);
+ qemu_fdt_setprop_cells(vbi->fdt, nodename, "msi-parent", vbi->v2m_phandle);
+
qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
2, base_ecam, 2, size_ecam);
qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "ranges",
Add a GICv2m device to the virt board to enable MSIs on the generic PCI host controller. We allocate 64 SPIs in the IRQ space for now (this can be increased/decreased later) and map the GICv2m right after the GIC in the memory map. Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> --- Changes since v1: - Remove stray merge conflict line - Reworded commmit message. hw/arm/virt.c | 45 ++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-)