From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49984) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z9UpF-0003qJ-KC for qemu-devel@nongnu.org; Mon, 29 Jun 2015 04:54:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z9UpE-0002pu-Ab for qemu-devel@nongnu.org; Mon, 29 Jun 2015 04:54:01 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56631) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z9UpE-0002pe-3i for qemu-devel@nongnu.org; Mon, 29 Jun 2015 04:54:00 -0400 From: Gerd Hoffmann Date: Mon, 29 Jun 2015 10:53:29 +0200 Message-Id: <1435568020-8669-8-git-send-email-kraxel@redhat.com> In-Reply-To: <1435568020-8669-1-git-send-email-kraxel@redhat.com> References: <1435568020-8669-1-git-send-email-kraxel@redhat.com> Subject: [Qemu-devel] [PATCH 07/18] virtio: add version 1.0 read/write macros List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: seabios@seabios.org Cc: Gerd Hoffmann , qemu-devel@nongnu.org, "Michael S. Tsirkin" Add macros to read/write registers of virtio-1.0 regions. Signed-off-by: Gerd Hoffmann --- src/hw/virtio-pci.h | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/src/hw/virtio-pci.h b/src/hw/virtio-pci.h index 893a7dd..e1d8b3e 100644 --- a/src/hw/virtio-pci.h +++ b/src/hw/virtio-pci.h @@ -111,6 +111,82 @@ struct vp_device { struct vp_cap common, notify, isr, device; }; +#define vp_modern_read(_cap, _struct, _field, _var) { \ + u32 addr = _cap.addr; \ + addr += offsetof(_struct, _field); \ + if (_cap.is_io) { \ + switch (sizeof(((_struct *)0)->_field)) { \ + case 8: \ + _var = inl(addr); \ + _var |= (u64)inl(addr+4) << 32; \ + break; \ + case 4: \ + _var = inl(addr); \ + break; \ + case 2: \ + _var = inw(addr); \ + break; \ + case 1: \ + _var = inb(addr); \ + break; \ + default: \ + _var = 0; \ + } \ + } else { \ + switch (sizeof(((_struct *)0)->_field)) { \ + case 8: \ + _var = readl((void*)addr); \ + _var |= (u64)readl((void*)(addr+4)) << 32; \ + break; \ + case 4: \ + _var = readl((void*)addr); \ + break; \ + case 2: \ + _var = readw((void*)addr); \ + break; \ + case 1: \ + _var = readb((void*)addr); \ + break; \ + default: \ + _var = 0; \ + } \ + } \ + dprintf(9, "vp read %x (%d) -> 0x%x\n", \ + addr, sizeof(((_struct *)0)->_field), (u32)_var); \ + } + +#define vp_modern_write(_cap, _struct, _field, _var) { \ + u32 addr = _cap.addr; \ + addr += offsetof(_struct, _field); \ + dprintf(9, "vp write %x (%d) <- 0x%x\n", \ + addr, sizeof(((_struct *)0)->_field), (u32)_var); \ + if (_cap.is_io) { \ + switch (sizeof(((_struct *)0)->_field)) { \ + case 4: \ + outl(_var, addr); \ + break; \ + case 2: \ + outw(_var, addr); \ + break; \ + case 1: \ + outb(_var, addr); \ + break; \ + } \ + } else { \ + switch (sizeof(((_struct *)0)->_field)) { \ + case 4: \ + writel((void*)addr, _var); \ + break; \ + case 2: \ + writew((void*)addr, _var); \ + break; \ + case 1: \ + writeb((void*)addr, _var); \ + break; \ + } \ + } \ + } + static inline u32 vp_get_features(struct vp_device *vp) { return inl(GET_LOWFLAT(vp->ioaddr) + VIRTIO_PCI_HOST_FEATURES); -- 1.8.3.1