From patchwork Mon Feb 25 17:09:01 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 222973 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id B4B1C2C02B1 for ; Tue, 26 Feb 2013 04:12:54 +1100 (EST) Received: from localhost ([::1]:53554 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UA1bg-0004AL-NE for incoming@patchwork.ozlabs.org; Mon, 25 Feb 2013 12:12:52 -0500 Received: from eggs.gnu.org ([208.118.235.92]:40374) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UA1bJ-00049K-OK for qemu-devel@nongnu.org; Mon, 25 Feb 2013 12:12:39 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UA1bE-000349-DE for qemu-devel@nongnu.org; Mon, 25 Feb 2013 12:12:29 -0500 Received: from 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.d.1.0.0.b.8.0.1.0.0.2.ip6.arpa ([2001:8b0:1d0::1]:60635 helo=mnementh.archaic.org.uk) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UA1bE-000341-3z for qemu-devel@nongnu.org; Mon, 25 Feb 2013 12:12:24 -0500 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.72) (envelope-from ) id 1UA1Xy-0006wF-HY; Mon, 25 Feb 2013 17:09:02 +0000 From: Peter Maydell To: qemu-devel@nongnu.org Date: Mon, 25 Feb 2013 17:09:01 +0000 Message-Id: <1361812142-26640-5-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 1.7.2.5 In-Reply-To: <1361812142-26640-1-git-send-email-peter.maydell@linaro.org> References: <1361812142-26640-1-git-send-email-peter.maydell@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:8b0:1d0::1 Cc: Paolo Bonzini , Michael Walle , Jan Kiszka , =?UTF-8?q?Andreas=20F=C3=A4rber?= , patches@linaro.org Subject: [Qemu-devel] [PATCH v2 4/5] milkymist-softusb: Don't map RAM memory regions in the device itself 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org 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 --- hw/milkymist-hw.h | 4 ++-- hw/milkymist-softusb.c | 21 +++++++++++---------- 2 files changed, 13 insertions(+), 12 deletions(-) diff --git a/hw/milkymist-hw.h b/hw/milkymist-hw.h index 21e202b..47f6d50 100644 --- a/hw/milkymist-hw.h +++ b/hw/milkymist-hw.h @@ -210,12 +210,12 @@ 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 01660be..a3e935f 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(), };