From patchwork Wed Aug 3 11:55:37 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avi Kivity X-Patchwork-Id: 1031172 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p73BuZw2010694 for ; Wed, 3 Aug 2011 11:56:35 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755338Ab1HCL4a (ORCPT ); Wed, 3 Aug 2011 07:56:30 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59244 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755163Ab1HCL4P (ORCPT ); Wed, 3 Aug 2011 07:56:15 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p73BuDeY028773 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 3 Aug 2011 07:56:13 -0400 Received: from cleopatra.tlv.redhat.com (cleopatra.tlv.redhat.com [10.35.255.11]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p73BuC7e030099; Wed, 3 Aug 2011 07:56:13 -0400 Received: from s01.tlv.redhat.com (s01.tlv.redhat.com [10.35.255.8]) by cleopatra.tlv.redhat.com (Postfix) with ESMTP id DCC27250B3E; Wed, 3 Aug 2011 14:56:10 +0300 (IDT) From: Avi Kivity To: Anthony Liguori , qemu-devel@nongnu.org Cc: kvm@vger.kernel.org Subject: [PATCH v2 07/38] vga: simplify vga window mmio access functions Date: Wed, 3 Aug 2011 14:55:37 +0300 Message-Id: <1312372568-5215-8-git-send-email-avi@redhat.com> In-Reply-To: <1312372568-5215-1-git-send-email-avi@redhat.com> References: <1312372568-5215-1-git-send-email-avi@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 03 Aug 2011 11:56:35 +0000 (UTC) Make use of the memory API's ability to satisfy multi-byte accesses via multiple single-byte accesses. We have to keep vga_mem_{read,write}b() since they're used by cirrus. Reviewed-by: Richard Henderson Signed-off-by: Avi Kivity --- hw/cirrus_vga.c | 4 +- hw/vga.c | 56 +++++++----------------------------------------------- hw/vga_int.h | 4 +- 3 files changed, 12 insertions(+), 52 deletions(-) diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c index 92696d9..3db15bf 100644 --- a/hw/cirrus_vga.c +++ b/hw/cirrus_vga.c @@ -1965,7 +1965,7 @@ static uint64_t cirrus_vga_mem_read(void *opaque, uint32_t val; if ((s->vga.sr[0x07] & 0x01) == 0) { - return vga_mem_readb(s, addr); + return vga_mem_readb(&s->vga, addr); } if (addr < 0x10000) { @@ -2010,7 +2010,7 @@ static void cirrus_vga_mem_write(void *opaque, unsigned mode; if ((s->vga.sr[0x07] & 0x01) == 0) { - vga_mem_writeb(s, addr, mem_value); + vga_mem_writeb(&s->vga, addr, mem_value); return; } diff --git a/hw/vga.c b/hw/vga.c index cdd8255..f5dd519 100644 --- a/hw/vga.c +++ b/hw/vga.c @@ -707,9 +707,8 @@ static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) #endif /* called for accesses between 0xa0000 and 0xc0000 */ -uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr) +uint32_t vga_mem_readb(VGACommonState *s, target_phys_addr_t addr) { - VGACommonState *s = opaque; int memory_map_mode, plane; uint32_t ret; @@ -763,28 +762,9 @@ uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr) return ret; } -static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr) -{ - uint32_t v; - v = vga_mem_readb(opaque, addr); - v |= vga_mem_readb(opaque, addr + 1) << 8; - return v; -} - -static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr) -{ - uint32_t v; - v = vga_mem_readb(opaque, addr); - v |= vga_mem_readb(opaque, addr + 1) << 8; - v |= vga_mem_readb(opaque, addr + 2) << 16; - v |= vga_mem_readb(opaque, addr + 3) << 24; - return v; -} - /* called for accesses between 0xa0000 and 0xc0000 */ -void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) +void vga_mem_writeb(VGACommonState *s, target_phys_addr_t addr, uint32_t val) { - VGACommonState *s = opaque; int memory_map_mode, plane, write_mode, b, func_select, mask; uint32_t write_mask, bit_mask, set_mask; @@ -916,20 +896,6 @@ void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) } } -static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) -{ - vga_mem_writeb(opaque, addr, val & 0xff); - vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); -} - -static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) -{ - vga_mem_writeb(opaque, addr, val & 0xff); - vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); - vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff); - vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff); -} - typedef void vga_draw_glyph8_func(uint8_t *d, int linesize, const uint8_t *font_ptr, int h, uint32_t fgcol, uint32_t bgcol); @@ -2104,12 +2070,7 @@ static uint64_t vga_mem_read(void *opaque, target_phys_addr_t addr, { VGACommonState *s = opaque; - switch (size) { - case 1: return vga_mem_readb(s, addr); - case 2: return vga_mem_readw(s, addr); - case 4: return vga_mem_readl(s, addr); - default: abort(); - } + return vga_mem_readb(s, addr); } static void vga_mem_write(void *opaque, target_phys_addr_t addr, @@ -2117,18 +2078,17 @@ static void vga_mem_write(void *opaque, target_phys_addr_t addr, { VGACommonState *s = opaque; - switch (size) { - case 1: return vga_mem_writeb(s, addr, data); - case 2: return vga_mem_writew(s, addr, data); - case 4: return vga_mem_writel(s, addr, data); - default: abort(); - } + return vga_mem_writeb(s, addr, data); } const MemoryRegionOps vga_mem_ops = { .read = vga_mem_read, .write = vga_mem_write, .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 1, + .max_access_size = 1, + }, }; static int vga_common_post_load(void *opaque, int version_id) diff --git a/hw/vga_int.h b/hw/vga_int.h index 4592d2c..100d98c 100644 --- a/hw/vga_int.h +++ b/hw/vga_int.h @@ -198,8 +198,8 @@ void vga_dirty_log_restart(VGACommonState *s); extern const VMStateDescription vmstate_vga_common; uint32_t vga_ioport_read(void *opaque, uint32_t addr); void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val); -uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr); -void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val); +uint32_t vga_mem_readb(VGACommonState *s, target_phys_addr_t addr); +void vga_mem_writeb(VGACommonState *s, target_phys_addr_t addr, uint32_t val); void vga_invalidate_scanlines(VGACommonState *s, int y1, int y2); int ppm_save(const char *filename, struct DisplaySurface *ds);