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X-Received-From: 2607:f8b0:400e:c03::22f Cc: zhaoshenglong@huawei.com, peter.huangpeng@huawei.com, shannon.zhao@linaro.org Subject: [Qemu-devel] [PATCH v2 1/8] hw/arm/virt: Add a GPIO controller X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org ACPI 5.0 supports GPIO-signaled ACPI Events. This can be used for powerdown, hotplug evnets. Add a GPIO controller in machine virt, to support powerdown, maybe can be used for cpu hotplug. And here we use pl061. Signed-off-by: Shannon Zhao Signed-off-by: Shannon Zhao --- hw/arm/virt.c | 30 ++++++++++++++++++++++++++++++ include/hw/arm/virt.h | 1 + 2 files changed, 31 insertions(+) -- 2.1.0 diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 77d9267..5c505a4 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -120,6 +120,7 @@ static const MemMapEntry a15memmap[] = { [VIRT_UART] = { 0x09000000, 0x00001000 }, [VIRT_RTC] = { 0x09010000, 0x00001000 }, [VIRT_FW_CFG] = { 0x09020000, 0x00000018 }, + [VIRT_GPIO] = { 0x09030000, 0x00001000 }, [VIRT_MMIO] = { 0x0a000000, 0x00000200 }, /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */ [VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 }, @@ -135,6 +136,7 @@ static const int a15irqmap[] = { [VIRT_UART] = 1, [VIRT_RTC] = 2, [VIRT_PCIE] = 3, /* ... to 6 */ + [VIRT_GPIO] = 7, [VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */ [VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */ [VIRT_PLATFORM_BUS] = 112, /* ...to 112 + PLATFORM_BUS_NUM_IRQS -1 */ @@ -538,6 +540,32 @@ static void create_rtc(const VirtBoardInfo *vbi, qemu_irq *pic) g_free(nodename); } +static void create_gpio(const VirtBoardInfo *vbi, qemu_irq *pic) +{ + char *nodename; + hwaddr base = vbi->memmap[VIRT_GPIO].base; + hwaddr size = vbi->memmap[VIRT_GPIO].size; + int irq = vbi->irqmap[VIRT_GPIO]; + const char compat[] = "arm,pl061\0arm,primecell"; + + sysbus_create_simple("pl061", base, pic[irq]); + + nodename = g_strdup_printf("/pl061@%" PRIx64, base); + qemu_fdt_add_subnode(vbi->fdt, nodename); + qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg", + 2, base, 2, size); + qemu_fdt_setprop(vbi->fdt, nodename, "compatible", compat, sizeof(compat)); + qemu_fdt_setprop_cell(vbi->fdt, nodename, "#gpio-cells", 2); + qemu_fdt_setprop(vbi->fdt, nodename, "gpio-controller", NULL, 0); + qemu_fdt_setprop_cells(vbi->fdt, nodename, "interrupts", + GIC_FDT_IRQ_TYPE_SPI, irq, + GIC_FDT_IRQ_FLAGS_LEVEL_HI); + qemu_fdt_setprop_cell(vbi->fdt, nodename, "clocks", vbi->clock_phandle); + qemu_fdt_setprop_string(vbi->fdt, nodename, "clock-names", "apb_pclk"); + + g_free(nodename); +} + static void create_virtio_devices(const VirtBoardInfo *vbi, qemu_irq *pic) { int i; @@ -1041,6 +1069,8 @@ static void machvirt_init(MachineState *machine) create_pcie(vbi, pic, vms->highmem); + create_gpio(vbi, pic); + /* Create mmio transports, so the user can create virtio backends * (which will be automatically plugged in to the transports). If * no backend is created the transport will just sit harmlessly idle. diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index f464586..925faa7 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -59,6 +59,7 @@ enum { VIRT_PCIE_ECAM, VIRT_PLATFORM_BUS, VIRT_PCIE_MMIO_HIGH, + VIRT_GPIO, }; typedef struct MemMapEntry {