From: Peter Maydell Date: Fri, 15 Mar 2013 14:34:22 +0000 (+0000) Subject: milkymist-softusb: Don't map RAM memory regions in the device itself X-Git-Tag: TizenStudio_2.0_p2.3.2~208^2~2221 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c34e120554c31d45bdfbac08a5c1d9ef92a62020;p=sdk%2Femulator%2Fqemu.git milkymist-softusb: Don't map RAM memory regions in the device itself Don't map the pmem and dmem RAM memory regions in the milkymist-softusb device itself. Instead just expose them as sysbus mmio regions which the device creator can map appropriately. This allows us to drop the pmem_base and dmem_base properties. Instead of going via cpu_physical_memory_read/_write when the device wants to access the RAMs, we just keep a host pointer to the memory and use that. Signed-off-by: Peter Maydell Reviewed-by: Andreas Färber Acked-by: Michael Walle Message-id: 1363358063-23973-5-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori --- diff --git a/hw/milkymist-hw.h b/hw/milkymist-hw.h index 8e6c01e..4e86c4e 100644 --- a/hw/milkymist-hw.h +++ b/hw/milkymist-hw.h @@ -194,12 +194,12 @@ static inline DeviceState *milkymist_softusb_create(hwaddr base, DeviceState *dev; dev = qdev_create(NULL, "milkymist-softusb"); - qdev_prop_set_uint32(dev, "pmem_base", pmem_base); qdev_prop_set_uint32(dev, "pmem_size", pmem_size); - qdev_prop_set_uint32(dev, "dmem_base", dmem_base); qdev_prop_set_uint32(dev, "dmem_size", dmem_size); qdev_init_nofail(dev); sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, pmem_base); + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, dmem_base); sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq); return dev; diff --git a/hw/milkymist-softusb.c b/hw/milkymist-softusb.c index d911686..b279d4e 100644 --- a/hw/milkymist-softusb.c +++ b/hw/milkymist-softusb.c @@ -54,10 +54,11 @@ struct MilkymistSoftUsbState { MemoryRegion dmem; qemu_irq irq; + void *pmem_ptr; + void *dmem_ptr; + /* device properties */ - uint32_t pmem_base; uint32_t pmem_size; - uint32_t dmem_base; uint32_t dmem_size; /* device registers */ @@ -134,7 +135,7 @@ static inline void softusb_read_dmem(MilkymistSoftUsbState *s, return; } - cpu_physical_memory_read(s->dmem_base + offset, buf, len); + memcpy(buf, s->dmem_ptr + offset, len); } static inline void softusb_write_dmem(MilkymistSoftUsbState *s, @@ -146,7 +147,7 @@ static inline void softusb_write_dmem(MilkymistSoftUsbState *s, return; } - cpu_physical_memory_write(s->dmem_base + offset, buf, len); + memcpy(s->dmem_ptr + offset, buf, len); } static inline void softusb_read_pmem(MilkymistSoftUsbState *s, @@ -158,7 +159,7 @@ static inline void softusb_read_pmem(MilkymistSoftUsbState *s, return; } - cpu_physical_memory_read(s->pmem_base + offset, buf, len); + memcpy(buf, s->pmem_ptr + offset, len); } static inline void softusb_write_pmem(MilkymistSoftUsbState *s, @@ -170,7 +171,7 @@ static inline void softusb_write_pmem(MilkymistSoftUsbState *s, return; } - cpu_physical_memory_write(s->pmem_base + offset, buf, len); + memcpy(s->pmem_ptr + offset, buf, len); } static void softusb_mouse_changed(MilkymistSoftUsbState *s) @@ -270,11 +271,13 @@ static int milkymist_softusb_init(SysBusDevice *dev) memory_region_init_ram(&s->pmem, "milkymist-softusb.pmem", s->pmem_size); vmstate_register_ram_global(&s->pmem); - sysbus_add_memory(dev, s->pmem_base, &s->pmem); + s->pmem_ptr = memory_region_get_ram_ptr(&s->pmem); + sysbus_init_mmio(dev, &s->pmem); memory_region_init_ram(&s->dmem, "milkymist-softusb.dmem", s->dmem_size); vmstate_register_ram_global(&s->dmem); - sysbus_add_memory(dev, s->dmem_base, &s->dmem); + s->dmem_ptr = memory_region_get_ram_ptr(&s->dmem); + sysbus_init_mmio(dev, &s->dmem); hid_init(&s->hid_kbd, HID_KEYBOARD, softusb_kbd_hid_datain); hid_init(&s->hid_mouse, HID_MOUSE, softusb_mouse_hid_datain); @@ -298,9 +301,7 @@ static const VMStateDescription vmstate_milkymist_softusb = { }; static Property milkymist_softusb_properties[] = { - DEFINE_PROP_UINT32("pmem_base", MilkymistSoftUsbState, pmem_base, 0xa0000000), DEFINE_PROP_UINT32("pmem_size", MilkymistSoftUsbState, pmem_size, 0x00001000), - DEFINE_PROP_UINT32("dmem_base", MilkymistSoftUsbState, dmem_base, 0xa0020000), DEFINE_PROP_UINT32("dmem_size", MilkymistSoftUsbState, dmem_size, 0x00002000), DEFINE_PROP_END_OF_LIST(), };