From patchwork Thu May 7 14:59:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 11534105 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2DEEE912 for ; Thu, 7 May 2020 15:00:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1922E20870 for ; Thu, 7 May 2020 15:00:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728051AbgEGPAl (ORCPT ); Thu, 7 May 2020 11:00:41 -0400 Received: from mga07.intel.com ([134.134.136.100]:27764 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726470AbgEGPAX (ORCPT ); Thu, 7 May 2020 11:00:23 -0400 IronPort-SDR: brtgMqZQMcbdujJGmdp5UFK3HI0e0x5HLuai21o/gOX8ufKL72zuRmgLHFU8YVX+K9mwjZE3+C foYayD1A/k9g== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 May 2020 08:00:19 -0700 IronPort-SDR: Cy4UofL/ZGlxBiwM8d7yBPac+s1xeopmMiYRGd1bsbjvN9m3oMzJUzzLiZDzQ9TZkKicsB3vdJ vg2mxCRP3g1g== X-IronPort-AV: E=Sophos;i="5.73,364,1583222400"; d="scan'208";a="296559905" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 May 2020 08:00:18 -0700 From: ira.weiny@intel.com To: linux-kernel@vger.kernel.org, Andrew Morton Cc: Ira Weiny , Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , Christoph Hellwig , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Benjamin Herrenschmidt , Paul Mackerras , "David S. Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Chris Zankel , Max Filippov , Dan Williams , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, dri-devel@lists.freedesktop.org, Al Viro Subject: [PATCH V3 11/15] drm: Remove drm specific kmap_atomic code Date: Thu, 7 May 2020 07:59:59 -0700 Message-Id: <20200507150004.1423069-12-ira.weiny@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200507150004.1423069-1-ira.weiny@intel.com> References: <20200507150004.1423069-1-ira.weiny@intel.com> MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org From: Ira Weiny kmap_atomic_prot() is now exported by all architectures. Use this function rather than open coding a driver specific kmap_atomic. Acked-by: Daniel Vetter Reviewed-by: Christian König Reviewed-by: Christoph Hellwig Signed-off-by: Ira Weiny --- drivers/gpu/drm/ttm/ttm_bo_util.c | 56 ++-------------------------- drivers/gpu/drm/vmwgfx/vmwgfx_blit.c | 16 ++++---- include/drm/ttm/ttm_bo_api.h | 4 -- 3 files changed, 12 insertions(+), 64 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 52d2b71f1588..f09b096ba4fd 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -257,54 +257,6 @@ static int ttm_copy_io_page(void *dst, void *src, unsigned long page) return 0; } -#ifdef CONFIG_X86 -#define __ttm_kmap_atomic_prot(__page, __prot) kmap_atomic_prot(__page, __prot) -#define __ttm_kunmap_atomic(__addr) kunmap_atomic(__addr) -#else -#define __ttm_kmap_atomic_prot(__page, __prot) vmap(&__page, 1, 0, __prot) -#define __ttm_kunmap_atomic(__addr) vunmap(__addr) -#endif - - -/** - * ttm_kmap_atomic_prot - Efficient kernel map of a single page with - * specified page protection. - * - * @page: The page to map. - * @prot: The page protection. - * - * This function maps a TTM page using the kmap_atomic api if available, - * otherwise falls back to vmap. The user must make sure that the - * specified page does not have an aliased mapping with a different caching - * policy unless the architecture explicitly allows it. Also mapping and - * unmapping using this api must be correctly nested. Unmapping should - * occur in the reverse order of mapping. - */ -void *ttm_kmap_atomic_prot(struct page *page, pgprot_t prot) -{ - if (pgprot_val(prot) == pgprot_val(PAGE_KERNEL)) - return kmap_atomic(page); - else - return __ttm_kmap_atomic_prot(page, prot); -} -EXPORT_SYMBOL(ttm_kmap_atomic_prot); - -/** - * ttm_kunmap_atomic_prot - Unmap a page that was mapped using - * ttm_kmap_atomic_prot. - * - * @addr: The virtual address from the map. - * @prot: The page protection. - */ -void ttm_kunmap_atomic_prot(void *addr, pgprot_t prot) -{ - if (pgprot_val(prot) == pgprot_val(PAGE_KERNEL)) - kunmap_atomic(addr); - else - __ttm_kunmap_atomic(addr); -} -EXPORT_SYMBOL(ttm_kunmap_atomic_prot); - static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, unsigned long page, pgprot_t prot) @@ -316,13 +268,13 @@ static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, return -ENOMEM; src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); - dst = ttm_kmap_atomic_prot(d, prot); + dst = kmap_atomic_prot(d, prot); if (!dst) return -ENOMEM; memcpy_fromio(dst, src, PAGE_SIZE); - ttm_kunmap_atomic_prot(dst, prot); + kunmap_atomic(dst); return 0; } @@ -338,13 +290,13 @@ static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, return -ENOMEM; dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); - src = ttm_kmap_atomic_prot(s, prot); + src = kmap_atomic_prot(s, prot); if (!src) return -ENOMEM; memcpy_toio(dst, src, PAGE_SIZE); - ttm_kunmap_atomic_prot(src, prot); + kunmap_atomic(src); return 0; } diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c index bb46ca0c458f..94d456a1d1a9 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_blit.c @@ -374,12 +374,12 @@ static int vmw_bo_cpu_blit_line(struct vmw_bo_blit_line_data *d, copy_size = min_t(u32, copy_size, PAGE_SIZE - src_page_offset); if (unmap_src) { - ttm_kunmap_atomic_prot(d->src_addr, d->src_prot); + kunmap_atomic(d->src_addr); d->src_addr = NULL; } if (unmap_dst) { - ttm_kunmap_atomic_prot(d->dst_addr, d->dst_prot); + kunmap_atomic(d->dst_addr); d->dst_addr = NULL; } @@ -388,8 +388,8 @@ static int vmw_bo_cpu_blit_line(struct vmw_bo_blit_line_data *d, return -EINVAL; d->dst_addr = - ttm_kmap_atomic_prot(d->dst_pages[dst_page], - d->dst_prot); + kmap_atomic_prot(d->dst_pages[dst_page], + d->dst_prot); if (!d->dst_addr) return -ENOMEM; @@ -401,8 +401,8 @@ static int vmw_bo_cpu_blit_line(struct vmw_bo_blit_line_data *d, return -EINVAL; d->src_addr = - ttm_kmap_atomic_prot(d->src_pages[src_page], - d->src_prot); + kmap_atomic_prot(d->src_pages[src_page], + d->src_prot); if (!d->src_addr) return -ENOMEM; @@ -499,9 +499,9 @@ int vmw_bo_cpu_blit(struct ttm_buffer_object *dst, } out: if (d.src_addr) - ttm_kunmap_atomic_prot(d.src_addr, d.src_prot); + kunmap_atomic(d.src_addr); if (d.dst_addr) - ttm_kunmap_atomic_prot(d.dst_addr, d.dst_prot); + kunmap_atomic(d.dst_addr); return ret; } diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 0a9d042e075a..de1ccdcd5703 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -668,10 +668,6 @@ int ttm_bo_mmap_obj(struct vm_area_struct *vma, struct ttm_buffer_object *bo); int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma, struct ttm_bo_device *bdev); -void *ttm_kmap_atomic_prot(struct page *page, pgprot_t prot); - -void ttm_kunmap_atomic_prot(void *addr, pgprot_t prot); - /** * ttm_bo_io *