From patchwork Wed Apr 10 06:38:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 10893237 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4C3B917EF for ; Wed, 10 Apr 2019 06:38:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3733828800 for ; Wed, 10 Apr 2019 06:38:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2B3D2289E5; Wed, 10 Apr 2019 06:38:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2BF0E289E2 for ; Wed, 10 Apr 2019 06:38:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6F41E892BF; Wed, 10 Apr 2019 06:38:24 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 53196892BB for ; Wed, 10 Apr 2019 06:38:21 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DECC97DCE7; Wed, 10 Apr 2019 06:38:20 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-65.ams2.redhat.com [10.36.116.65]) by smtp.corp.redhat.com (Postfix) with ESMTP id 60F8161993; Wed, 10 Apr 2019 06:38:16 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 618711747B; Wed, 10 Apr 2019 08:38:15 +0200 (CEST) From: Gerd Hoffmann To: dri-devel@lists.freedesktop.org Subject: [PATCH v2 2/3] drm: switch drm_fb_xrgb8888_to_rgb565_dstclip to accept __iomem dst Date: Wed, 10 Apr 2019 08:38:14 +0200 Message-Id: <20190410063815.17062-3-kraxel@redhat.com> In-Reply-To: <20190410063815.17062-1-kraxel@redhat.com> References: <20190410063815.17062-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Wed, 10 Apr 2019 06:38:21 +0000 (UTC) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , open list , "open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE" , Maxime Ripard , Gerd Hoffmann , Dave Airlie , Sean Paul MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Not all archs have the __io_virt() macro, so cirrus can't simply convert pointers that way. The drm format helpers have to use memcpy_toio() instead. This patch makes drm_fb_xrgb8888_to_rgb565_dstclip() accept a __iomem dst pointer and use memcpy_toio() instead of memcpy(). The helper function (drm_fb_xrgb8888_to_rgb565_line) has been changed to process a single scanline. Signed-off-by: Gerd Hoffmann Reviewed-by: Noralf Trønnes --- include/drm/drm_format_helper.h | 2 +- drivers/gpu/drm/cirrus/cirrus.c | 2 +- drivers/gpu/drm/drm_format_helper.c | 113 ++++++++++++++-------------- 3 files changed, 60 insertions(+), 57 deletions(-) diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h index bc2e1004e166..d1b8a9ea01b4 100644 --- a/include/drm/drm_format_helper.h +++ b/include/drm/drm_format_helper.h @@ -23,7 +23,7 @@ void drm_fb_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, void drm_fb_xrgb8888_to_rgb565(void *dst, void *vaddr, struct drm_framebuffer *fb, struct drm_rect *clip, bool swap); -void drm_fb_xrgb8888_to_rgb565_dstclip(void *dst, unsigned int dst_pitch, +void drm_fb_xrgb8888_to_rgb565_dstclip(void __iomem *dst, unsigned int dst_pitch, void *vaddr, struct drm_framebuffer *fb, struct drm_rect *clip, bool swap); void drm_fb_xrgb8888_to_rgb888_dstclip(void *dst, unsigned int dst_pitch, diff --git a/drivers/gpu/drm/cirrus/cirrus.c b/drivers/gpu/drm/cirrus/cirrus.c index 0fc3aa31b5a4..ed2f2d8cfb6f 100644 --- a/drivers/gpu/drm/cirrus/cirrus.c +++ b/drivers/gpu/drm/cirrus/cirrus.c @@ -311,7 +311,7 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb, vmap, fb, rect); else if (fb->format->cpp[0] == 4 && cirrus->cpp == 2) - drm_fb_xrgb8888_to_rgb565_dstclip(__io_virt(cirrus->vram), + drm_fb_xrgb8888_to_rgb565_dstclip(cirrus->vram, cirrus->pitch, vmap, fb, rect, false); diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c index dace05638bc3..c9521af4e90b 100644 --- a/drivers/gpu/drm/drm_format_helper.c +++ b/drivers/gpu/drm/drm_format_helper.c @@ -113,42 +113,22 @@ void drm_fb_swab16(u16 *dst, void *vaddr, struct drm_framebuffer *fb, } EXPORT_SYMBOL(drm_fb_swab16); -static void drm_fb_xrgb8888_to_rgb565_lines(void *dst, unsigned int dst_pitch, - void *src, unsigned int src_pitch, - unsigned int src_linelength, - unsigned int lines, - bool swap) +static void drm_fb_xrgb8888_to_rgb565_line(u16 *dbuf, u32 *sbuf, + unsigned int pixels, + bool swab) { - unsigned int linepixels = src_linelength / sizeof(u32); - unsigned int x, y; - u32 *sbuf; - u16 *dbuf, val16; + unsigned int x; + u16 val16; - /* - * The cma memory is write-combined so reads are uncached. - * Speed up by fetching one line at a time. - */ - sbuf = kmalloc(src_linelength, GFP_KERNEL); - if (!sbuf) - return; - - for (y = 0; y < lines; y++) { - memcpy(sbuf, src, src_linelength); - dbuf = dst; - for (x = 0; x < linepixels; x++) { - val16 = ((sbuf[x] & 0x00F80000) >> 8) | - ((sbuf[x] & 0x0000FC00) >> 5) | - ((sbuf[x] & 0x000000F8) >> 3); - if (swap) - *dbuf++ = swab16(val16); - else - *dbuf++ = val16; - } - src += src_pitch; - dst += dst_pitch; + for (x = 0; x < pixels; x++) { + val16 = ((sbuf[x] & 0x00F80000) >> 8) | + ((sbuf[x] & 0x0000FC00) >> 5) | + ((sbuf[x] & 0x000000F8) >> 3); + if (swab) + dbuf[x] = swab16(val16); + else + dbuf[x] = val16; } - - kfree(sbuf); } /** @@ -167,23 +147,37 @@ static void drm_fb_xrgb8888_to_rgb565_lines(void *dst, unsigned int dst_pitch, */ void drm_fb_xrgb8888_to_rgb565(void *dst, void *vaddr, struct drm_framebuffer *fb, - struct drm_rect *clip, bool swap) + struct drm_rect *clip, bool swab) { - unsigned int src_offset = (clip->y1 * fb->pitches[0]) - + (clip->x1 * sizeof(u32)); - size_t src_len = (clip->x2 - clip->x1) * sizeof(u32); - size_t dst_len = (clip->x2 - clip->x1) * sizeof(u16); + size_t linepixels = clip->x2 - clip->x1; + size_t src_len = linepixels * sizeof(u32); + size_t dst_len = linepixels * sizeof(u16); + unsigned y, lines = clip->y2 - clip->y1; + void *sbuf; - drm_fb_xrgb8888_to_rgb565_lines(dst, dst_len, - vaddr + src_offset, fb->pitches[0], - src_len, clip->y2 - clip->y1, - swap); + /* + * The cma memory is write-combined so reads are uncached. + * Speed up by fetching one line at a time. + */ + sbuf = kmalloc(src_len, GFP_KERNEL); + if (!sbuf) + return; + + vaddr += clip_offset(clip, fb->pitches[0], sizeof(u32)); + for (y = 0; y < lines; y++) { + memcpy(sbuf, vaddr, src_len); + drm_fb_xrgb8888_to_rgb565_line(dst, sbuf, linepixels, swab); + vaddr += fb->pitches[0]; + dst += dst_len; + } + + kfree(sbuf); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565); /** * drm_fb_xrgb8888_to_rgb565_dstclip - Convert XRGB8888 to RGB565 clip buffer - * @dst: RGB565 destination buffer + * @dst: RGB565 destination buffer (iomem) * @dst_pitch: destination buffer pitch * @vaddr: XRGB8888 source buffer * @fb: DRM framebuffer @@ -194,22 +188,31 @@ EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565); * support XRGB8888. * * This function applies clipping on dst, i.e. the destination is a - * full framebuffer but only the clip rect content is copied over. + * full (iomem) framebuffer but only the clip rect content is copied over. */ -void drm_fb_xrgb8888_to_rgb565_dstclip(void *dst, unsigned int dst_pitch, +void drm_fb_xrgb8888_to_rgb565_dstclip(void __iomem *dst, unsigned int dst_pitch, void *vaddr, struct drm_framebuffer *fb, - struct drm_rect *clip, bool swap) + struct drm_rect *clip, bool swab) { - unsigned int src_offset = (clip->y1 * fb->pitches[0]) - + (clip->x1 * sizeof(u32)); - unsigned int dst_offset = (clip->y1 * dst_pitch) - + (clip->x1 * sizeof(u16)); - size_t src_len = (clip->x2 - clip->x1) * sizeof(u32); + size_t linepixels = clip->x2 - clip->x1; + size_t dst_len = linepixels * sizeof(u16); + unsigned y, lines = clip->y2 - clip->y1; + void *dbuf; - drm_fb_xrgb8888_to_rgb565_lines(dst + dst_offset, dst_pitch, - vaddr + src_offset, fb->pitches[0], - src_len, clip->y2 - clip->y1, - swap); + dbuf = kmalloc(dst_len, GFP_KERNEL); + if (!dbuf) + return; + + vaddr += clip_offset(clip, fb->pitches[0], sizeof(u32)); + dst += clip_offset(clip, dst_pitch, sizeof(u16)); + for (y = 0; y < lines; y++) { + drm_fb_xrgb8888_to_rgb565_line(dbuf, vaddr, linepixels, swab); + memcpy_toio(dst, dbuf, dst_len); + vaddr += fb->pitches[0]; + dst += dst_len; + } + + kfree(dbuf); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565_dstclip);