From nobody Mon Apr 6 20:11:06 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1773790361495400.1812209260705; Tue, 17 Mar 2026 16:32:41 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w2dtq-0000xy-6M; Tue, 17 Mar 2026 19:32:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dto-0000xT-9i for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:32 -0400 Received: from zero.eik.bme.hu ([152.66.115.2]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dtm-0006aO-Ah for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:32 -0400 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id A7E95596ABE; Wed, 18 Mar 2026 00:32:28 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id Ki6EVp7Uqn4G; Wed, 18 Mar 2026 00:32:26 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 89892596A4B; Wed, 18 Mar 2026 00:32:26 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: <40f0e42b1fa51bea1d9199eb0cd519a5b8da6fdd.1773789314.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v3 1/5] ati-vga: Fix colors when frame buffer endianness does not match host MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Gerd Hoffmann , marcandre.lureau@redhat.com, Chad Jablonski , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 18 Mar 2026 00:32:26 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -1 X-Spam_score: -0.2 X-Spam_bar: / X-Spam_report: (-0.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.819, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.903, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1773790365421158500 Content-Type: text/plain; charset="utf-8" When writing pixels we have to take into account if the frame buffer endianness matches the host endianness or we need to swap to correct endianness. This caused wrong colors e.g. with PPC Linux guest that uses big endian frame buffer when running on little endian host. Signed-off-by: BALATON Zoltan --- ROP3_BLACKNESS, ROP3_WHITENESS is probably still broken with <24 bit modes but I don't know anything that uses it so I leave it for now because I'm not sure which palette entries should that use in 15/16 bit modes so I'm not trying to fix that without a test case hw/display/ati_2d.c | 40 +++++++++++++++++++++++++++++----------- 1 file changed, 29 insertions(+), 11 deletions(-) diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c index 37fe6c17ee..0cbbdc33f4 100644 --- a/hw/display/ati_2d.c +++ b/hw/display/ati_2d.c @@ -50,6 +50,7 @@ typedef struct { bool host_data_active; bool left_to_right; bool top_to_bottom; + bool need_swap; uint32_t frgd_clr; const uint8_t *palette; const uint8_t *vram_end; @@ -89,6 +90,7 @@ static void setup_2d_blt_ctx(const ATIVGAState *s, ATI2DC= tx *ctx) ctx->host_data_active =3D s->host_data.active; ctx->left_to_right =3D s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT; ctx->top_to_bottom =3D s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM; + ctx->need_swap =3D HOST_BIG_ENDIAN !=3D s->vga.big_endian_fb ? true : = false; ctx->frgd_clr =3D s->regs.dp_brush_frgd_clr; ctx->palette =3D s->vga.palette; ctx->dst_offset =3D s->regs.dst_offset; @@ -131,6 +133,17 @@ static void setup_2d_blt_ctx(const ATIVGAState *s, ATI= 2DCtx *ctx) (ctx->top_to_bottom ? 'v' : '^')); } =20 +static uint32_t make_filler(int bpp, uint32_t color) +{ + if (bpp < 24) { + color |=3D color << 16; + if (bpp < 15) { + color |=3D color << 8; + } + } + return color; +} + static bool ati_2d_do_blt(ATI2DCtx *ctx, uint8_t use_pixman) { QemuRect vis_src, vis_dst; @@ -255,7 +268,7 @@ static bool ati_2d_do_blt(ATI2DCtx *ctx, uint8_t use_pi= xman) =20 switch (ctx->rop3) { case ROP3_PATCOPY: - filler =3D ctx->frgd_clr; + filler =3D make_filler(ctx->bpp, ctx->frgd_clr); break; case ROP3_BLACKNESS: filler =3D 0xffUL << 24 | rgb_to_pixel32(ctx->palette[0], @@ -268,10 +281,12 @@ static bool ati_2d_do_blt(ATI2DCtx *ctx, uint8_t use_= pixman) ctx->palette[5]); break; } - DPRINTF("pixman_fill(%p, %ld, %d, %d, %d, %d, %d, %x)\n", ctx->dst_bits, ctx->dst_stride / sizeof(uint32_t), ctx->bp= p, vis_dst.x, vis_dst.y, vis_dst.width, vis_dst.height, fille= r); + if (ctx->need_swap) { + bswap32s(&filler); + } #ifdef CONFIG_PIXMAN if (!(use_pixman & BIT(0)) || !pixman_fill((uint32_t *)ctx->dst_bits, @@ -325,11 +340,8 @@ void ati_2d_blt(ATIVGAState *s) bool ati_host_data_flush(ATIVGAState *s) { ATI2DCtx ctx, chunk; - uint32_t fg =3D s->regs.dp_src_frgd_clr; - uint32_t bg =3D s->regs.dp_src_bkgd_clr; unsigned bypp, pix_count, row, col, idx; uint8_t pix_buf[ATI_HOST_DATA_ACC_BITS * sizeof(uint32_t)]; - uint32_t byte_pix_order =3D s->regs.dp_datatype & DP_BYTE_PIX_ORDER; uint32_t src_source =3D s->regs.dp_mix & DP_SRC_SOURCE; uint32_t src_datatype =3D s->regs.dp_datatype & DP_SRC_DATATYPE; =20 @@ -360,21 +372,27 @@ bool ati_host_data_flush(ATIVGAState *s) } =20 bypp =3D ctx.bpp / 8; - + pix_count =3D ATI_HOST_DATA_ACC_BITS; if (src_datatype =3D=3D SRC_COLOR) { - pix_count =3D ATI_HOST_DATA_ACC_BITS / ctx.bpp; - memcpy(pix_buf, &s->host_data.acc[0], sizeof(s->host_data.acc)); + pix_count /=3D ctx.bpp; + memcpy(pix_buf, s->host_data.acc, sizeof(s->host_data.acc)); } else { - pix_count =3D ATI_HOST_DATA_ACC_BITS; /* Expand monochrome bits to color pixels */ + uint32_t byte_pix_order =3D s->regs.dp_datatype & DP_BYTE_PIX_ORDE= R; + uint32_t fg =3D make_filler(ctx.bpp, s->regs.dp_src_frgd_clr); + uint32_t bg =3D make_filler(ctx.bpp, s->regs.dp_src_bkgd_clr); + + if (ctx.need_swap) { + bswap32s(&fg); + bswap32s(&bg); + } idx =3D 0; for (int word =3D 0; word < 4; word++) { for (int byte =3D 0; byte < 4; byte++) { uint8_t byte_val =3D s->host_data.acc[word] >> (byte * 8); for (int i =3D 0; i < 8; i++) { bool is_fg =3D byte_val & BIT(byte_pix_order ? i : 7 -= i); - uint32_t color =3D is_fg ? fg : bg; - stn_he_p(&pix_buf[idx], bypp, color); + stn_he_p(&pix_buf[idx], bypp, is_fg ? fg : bg); idx +=3D bypp; } } --=20 2.41.3 From nobody Mon Apr 6 20:11:06 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1773790378346302.02231495173646; Tue, 17 Mar 2026 16:32:58 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w2dtr-0000yo-6m; Tue, 17 Mar 2026 19:32:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dtp-0000xn-8w for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:33 -0400 Received: from zero.eik.bme.hu ([152.66.115.2]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dtn-0006ah-2A for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:33 -0400 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id C6B2A596E02; Wed, 18 Mar 2026 00:32:29 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id uTfLki-LBhVG; Wed, 18 Mar 2026 00:32:27 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 98F72596A4E; Wed, 18 Mar 2026 00:32:27 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v3 2/5] ati-vga: Also switch mode on HW cursor enable bit change MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Gerd Hoffmann , marcandre.lureau@redhat.com, Chad Jablonski , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 18 Mar 2026 00:32:27 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -1 X-Spam_score: -0.2 X-Spam_bar: / X-Spam_report: (-0.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.819, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.903, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1773790381358154100 Content-Type: text/plain; charset="utf-8" This does nothing for most drivers but works around issue and fixes output with the Solaris R128 driver that only sets display parameters after enabling CRT controller which we would miss otherwise. Signed-off-by: BALATON Zoltan Tested-by: Chad Jablonski Reviewed-by: Chad Jablonski --- hw/display/ati.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/display/ati.c b/hw/display/ati.c index c165434938..8286f67c1c 100644 --- a/hw/display/ati.c +++ b/hw/display/ati.c @@ -632,6 +632,7 @@ static void ati_mm_write(void *opaque, hwaddr addr, ati_reg_write_offs(&s->regs.crtc_gen_cntl, addr - CRTC_GEN_CNTL, data, size); if ((val & CRTC2_CUR_EN) !=3D (s->regs.crtc_gen_cntl & CRTC2_CUR_E= N)) { + ati_vga_switch_mode(s); if (s->cursor_guest_mode) { s->vga.force_shadow =3D !!(s->regs.crtc_gen_cntl & CRTC2_C= UR_EN); } else { --=20 2.41.3 From nobody Mon Apr 6 20:11:06 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1773790387731494.41242924648395; Tue, 17 Mar 2026 16:33:07 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w2dts-0000zC-Fa; Tue, 17 Mar 2026 19:32:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dtp-0000xo-D9 for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:33 -0400 Received: from zero.eik.bme.hu ([152.66.115.2]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dtn-0006an-RK for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:33 -0400 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id A03B7596E04; Wed, 18 Mar 2026 00:32:30 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id 4RBDAs3lhWbp; Wed, 18 Mar 2026 00:32:28 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id A43FB596ABD; Wed, 18 Mar 2026 00:32:28 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: <3abba5651a31af2d40b20269e224c0dcec73fc9a.1773789314.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v3 3/5] ati-vga: Do not add crtc offset to src and dst data address MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Gerd Hoffmann , marcandre.lureau@redhat.com, Chad Jablonski , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 18 Mar 2026 00:32:28 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -1 X-Spam_score: -0.2 X-Spam_bar: / X-Spam_report: (-0.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.819, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.903, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1773790389799158500 Content-Type: text/plain; charset="utf-8" Drivers seem to program these registers with values that already include the crtc offset so this is not needed. This fixes blit outside of vram errors with non-0 crtc offset. Signed-off-by: BALATON Zoltan --- hw/display/ati_2d.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c index 0cbbdc33f4..cf2d4a08e2 100644 --- a/hw/display/ati_2d.c +++ b/hw/display/ati_2d.c @@ -110,7 +110,6 @@ static void setup_2d_blt_ctx(const ATIVGAState *s, ATI2= DCtx *ctx) ctx->dst_stride =3D s->regs.dst_pitch; ctx->dst_bits =3D s->vga.vram_ptr + s->regs.dst_offset; if (s->dev_id =3D=3D PCI_DEVICE_ID_ATI_RAGE128_PF) { - ctx->dst_bits +=3D s->regs.crtc_offset & 0x07ffffff; ctx->dst_stride *=3D ctx->bpp; } =20 @@ -121,7 +120,6 @@ static void setup_2d_blt_ctx(const ATIVGAState *s, ATI2= DCtx *ctx) ctx->src_stride =3D s->regs.src_pitch; ctx->src_bits =3D s->vga.vram_ptr + s->regs.src_offset; if (s->dev_id =3D=3D PCI_DEVICE_ID_ATI_RAGE128_PF) { - ctx->src_bits +=3D s->regs.crtc_offset & 0x07ffffff; ctx->src_stride *=3D ctx->bpp; } DPRINTF("%d %d %d, %d %d %d, (%d,%d) -> (%d,%d) %dx%d %c %c\n", --=20 2.41.3 From nobody Mon Apr 6 20:11:06 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1773790364660468.26181886578684; Tue, 17 Mar 2026 16:32:44 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w2dtu-000107-Ci; Tue, 17 Mar 2026 19:32:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dts-0000zI-OV for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:37 -0400 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dtr-0006av-5v for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:36 -0400 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id A8331596E09; Wed, 18 Mar 2026 00:32:31 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id C9xTWsgI5V6I; Wed, 18 Mar 2026 00:32:29 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id B099A596DFE; Wed, 18 Mar 2026 00:32:29 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: <89e33449b948c5dd3677e68d4c290d7521726375.1773789314.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v3 4/5] ati-vga: Avoid warnings about sign extension MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Gerd Hoffmann , marcandre.lureau@redhat.com, Chad Jablonski , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 18 Mar 2026 00:32:29 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1773790369086158500 Content-Type: text/plain; charset="utf-8" Coverity reports several possible sign extension errors (latest is CID 1645615). These cannot happen because the values are limited when writing the registers and only 32 bits of the return value matter but change type of the variable storing the return value to uint32_t to avoid these warnings. Also change DEFAULT_SC_BOTTOM_RIGHT register read to match what other similar registers do for consistency. Signed-off-by: BALATON Zoltan Reviewed-by: Peter Maydell --- hw/display/ati.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/hw/display/ati.c b/hw/display/ati.c index 8286f67c1c..705e4db6e4 100644 --- a/hw/display/ati.c +++ b/hw/display/ati.c @@ -266,7 +266,7 @@ static void ati_vga_vblank_irq(void *opaque) ati_vga_update_irq(s); } =20 -static inline uint64_t ati_reg_read_offs(uint32_t reg, int offs, +static inline uint32_t ati_reg_read_offs(uint32_t reg, int offs, unsigned int size) { if (offs =3D=3D 0 && size =3D=3D 4) { @@ -279,7 +279,7 @@ static inline uint64_t ati_reg_read_offs(uint32_t reg, = int offs, static uint64_t ati_mm_read(void *opaque, hwaddr addr, unsigned int size) { ATIVGAState *s =3D opaque; - uint64_t val =3D 0; + uint32_t val =3D 0; =20 switch (addr) { case MM_INDEX: @@ -514,8 +514,8 @@ static uint64_t ati_mm_read(void *opaque, hwaddr addr, = unsigned int size) val |=3D s->regs.default_tile << 16; break; case DEFAULT_SC_BOTTOM_RIGHT: - val =3D (s->regs.default_sc_bottom << 16) | - s->regs.default_sc_right; + val =3D s->regs.default_sc_right; + val |=3D s->regs.default_sc_bottom << 16; break; case SC_TOP: val =3D s->regs.sc_top; --=20 2.41.3 From nobody Mon Apr 6 20:11:06 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=eik.bme.hu Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1773790394828381.0884003713347; Tue, 17 Mar 2026 16:33:14 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w2dtv-00012Z-AV; Tue, 17 Mar 2026 19:32:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dts-0000zK-PS for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:37 -0400 Received: from zero.eik.bme.hu ([2001:738:2001:2001::2001]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2dtr-0006bF-85 for qemu-devel@nongnu.org; Tue, 17 Mar 2026 19:32:36 -0400 Received: from localhost (localhost [127.0.0.1]) by zero.eik.bme.hu (Postfix) with ESMTP id BC365596E0C; Wed, 18 Mar 2026 00:32:32 +0100 (CET) Received: from zero.eik.bme.hu ([127.0.0.1]) by localhost (zero.eik.bme.hu [127.0.0.1]) (amavis, port 10028) with ESMTP id Rq3zRCHYbcyh; Wed, 18 Mar 2026 00:32:30 +0100 (CET) Received: by zero.eik.bme.hu (Postfix, from userid 432) id BBA63596E06; Wed, 18 Mar 2026 00:32:30 +0100 (CET) X-Virus-Scanned: amavis at eik.bme.hu Message-ID: In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v3 5/5] ati-vga: Fix display updates in non-32 bit modes MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable To: qemu-devel@nongnu.org Cc: Gerd Hoffmann , marcandre.lureau@redhat.com, Chad Jablonski , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 18 Mar 2026 00:32:30 +0100 (CET) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:738:2001:2001::2001; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1773790397537154100 Content-Type: text/plain; charset="utf-8" The memory_region_set_dirty used to mark changes should use stride value in vram which is normally only the same as surface_stride in 32 bit modes. This caused missed updates in 8 and 16 bit modes. Signed-off-by: BALATON Zoltan --- hw/display/ati_2d.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c index cf2d4a08e2..a1224bbc9f 100644 --- a/hw/display/ati_2d.c +++ b/hw/display/ati_2d.c @@ -78,8 +78,8 @@ static void ati_set_dirty(VGACommonState *vga, const ATI2= DCtx *ctx) vga->vbe_regs[VBE_DISPI_INDEX_YRES] * vga->vbe_line_offset) { memory_region_set_dirty(&vga->vram, vga->vbe_start_addr + ctx->dst_offset + - ctx->dst.y * surface_stride(ds), - ctx->dst.height * surface_stride(ds)); + ctx->dst.y * ctx->dst_stride, + ctx->dst.height * ctx->dst_stride); } } =20 --=20 2.41.3