From ea9b3186954ff07efbaad771e4c5674518fe872f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Wed, 17 Aug 2022 17:08:37 +0200 Subject: [PATCH] ppc/ppc405: QOM'ify FPGA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Reviewed-by: Daniel Henrique Barboza Signed-off-by: Cédric Le Goater Signed-off-by: BALATON Zoltan Message-Id: Signed-off-by: Daniel Henrique Barboza --- hw/ppc/ppc405_boards.c | 56 +++++++++++++++++++++++++++++------------- 1 file changed, 39 insertions(+), 17 deletions(-) diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c index 3677793adc..7af0d7feef 100644 --- a/hw/ppc/ppc405_boards.c +++ b/hw/ppc/ppc405_boards.c @@ -71,18 +71,23 @@ struct Ppc405MachineState { * - NVRAM (0xF0000000) * - FPGA (0xF0300000) */ -typedef struct ref405ep_fpga_t ref405ep_fpga_t; -struct ref405ep_fpga_t { + +#define TYPE_REF405EP_FPGA "ref405ep-fpga" +OBJECT_DECLARE_SIMPLE_TYPE(Ref405epFpgaState, REF405EP_FPGA); +struct Ref405epFpgaState { + SysBusDevice parent_obj; + + MemoryRegion iomem; + uint8_t reg0; uint8_t reg1; }; static uint64_t ref405ep_fpga_readb(void *opaque, hwaddr addr, unsigned size) { - ref405ep_fpga_t *fpga; + Ref405epFpgaState *fpga = opaque; uint32_t ret; - fpga = opaque; switch (addr) { case 0x0: ret = fpga->reg0; @@ -101,9 +106,8 @@ static uint64_t ref405ep_fpga_readb(void *opaque, hwaddr addr, unsigned size) static void ref405ep_fpga_writeb(void *opaque, hwaddr addr, uint64_t value, unsigned size) { - ref405ep_fpga_t *fpga; + Ref405epFpgaState *fpga = opaque; - fpga = opaque; switch (addr) { case 0x0: /* Read only */ @@ -126,27 +130,40 @@ static const MemoryRegionOps ref405ep_fpga_ops = { .endianness = DEVICE_BIG_ENDIAN, }; -static void ref405ep_fpga_reset (void *opaque) +static void ref405ep_fpga_reset(DeviceState *dev) { - ref405ep_fpga_t *fpga; + Ref405epFpgaState *fpga = REF405EP_FPGA(dev); - fpga = opaque; fpga->reg0 = 0x00; fpga->reg1 = 0x0F; } -static void ref405ep_fpga_init(MemoryRegion *sysmem, uint32_t base) +static void ref405ep_fpga_realize(DeviceState *dev, Error **errp) { - ref405ep_fpga_t *fpga; - MemoryRegion *fpga_memory = g_new(MemoryRegion, 1); + Ref405epFpgaState *s = REF405EP_FPGA(dev); - fpga = g_new0(ref405ep_fpga_t, 1); - memory_region_init_io(fpga_memory, NULL, &ref405ep_fpga_ops, fpga, + memory_region_init_io(&s->iomem, OBJECT(s), &ref405ep_fpga_ops, s, "fpga", 0x00000100); - memory_region_add_subregion(sysmem, base, fpga_memory); - qemu_register_reset(&ref405ep_fpga_reset, fpga); + sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->iomem); } +static void ref405ep_fpga_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + dc->realize = ref405ep_fpga_realize; + dc->reset = ref405ep_fpga_reset; + /* Reason: only works as part of a ppc405 board */ + dc->user_creatable = false; +} + +static const TypeInfo ref405ep_fpga_type = { + .name = TYPE_REF405EP_FPGA, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(Ref405epFpgaState), + .class_init = ref405ep_fpga_class_init, +}; + /* * CPU reset handler when booting directly from a loaded kernel */ @@ -331,7 +348,11 @@ static void ref405ep_init(MachineState *machine) memory_region_add_subregion(get_system_memory(), PPC405EP_SRAM_BASE, sram); /* Register FPGA */ - ref405ep_fpga_init(get_system_memory(), PPC405EP_FPGA_BASE); + dev = qdev_new(TYPE_REF405EP_FPGA); + object_property_add_child(OBJECT(machine), "fpga", OBJECT(dev)); + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, PPC405EP_FPGA_BASE); + /* Register NVRAM */ dev = qdev_new("sysbus-m48t08"); qdev_prop_set_int32(dev, "base-year", 1968); @@ -376,6 +397,7 @@ static void ppc405_machine_init(void) { type_register_static(&ppc405_machine_type); type_register_static(&ref405ep_type); + type_register_static(&ref405ep_fpga_type); } type_init(ppc405_machine_init)