From owner-svn-src-all@freebsd.org Thu May 16 19:10:50 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0F74015A4F9A; Thu, 16 May 2019 19:10:50 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A7A1A70DC1; Thu, 16 May 2019 19:10:49 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7E30C2513D; Thu, 16 May 2019 19:10:49 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x4GJAnfa062697; Thu, 16 May 2019 19:10:49 GMT (envelope-from cem@FreeBSD.org) Received: (from cem@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x4GJAndf062696; Thu, 16 May 2019 19:10:49 GMT (envelope-from cem@FreeBSD.org) Message-Id: <201905161910.x4GJAndf062696@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: cem set sender to cem@FreeBSD.org using -f From: Conrad Meyer Date: Thu, 16 May 2019 19:10:49 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r347888 - in head/sys/mips: include mips X-SVN-Group: head X-SVN-Commit-Author: cem X-SVN-Commit-Paths: in head/sys/mips: include mips X-SVN-Commit-Revision: 347888 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: A7A1A70DC1 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.99 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.99)[-0.989,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 May 2019 19:10:50 -0000 Author: cem Date: Thu May 16 19:10:48 2019 New Revision: 347888 URL: https://svnweb.freebsd.org/changeset/base/347888 Log: mips: Implement basic pmap_kenter_device, pmap_kremove_device Unbreak mips.BERI_DE4_SDROOT build, which uses device xdma. Device xdma depends on the pmap_kenter_device APIs. Reported by: tinderbox (local) Sponsored by: Dell EMC Isilon Modified: head/sys/mips/include/pmap.h head/sys/mips/mips/pmap.c Modified: head/sys/mips/include/pmap.h ============================================================================== --- head/sys/mips/include/pmap.h Thu May 16 19:09:41 2019 (r347887) +++ head/sys/mips/include/pmap.h Thu May 16 19:10:48 2019 (r347888) @@ -177,7 +177,9 @@ void pmap_unmapdev(vm_offset_t, vm_size_t); vm_offset_t pmap_steal_memory(vm_size_t size); void pmap_kenter(vm_offset_t va, vm_paddr_t pa); void pmap_kenter_attr(vm_offset_t va, vm_paddr_t pa, vm_memattr_t attr); +void pmap_kenter_device(vm_offset_t, vm_size_t, vm_paddr_t); void pmap_kremove(vm_offset_t va); +void pmap_kremove_device(vm_offset_t, vm_size_t); void *pmap_kenter_temporary(vm_paddr_t pa, int i); void pmap_kenter_temporary_free(vm_paddr_t pa); void pmap_flush_pvcache(vm_page_t m); Modified: head/sys/mips/mips/pmap.c ============================================================================== --- head/sys/mips/mips/pmap.c Thu May 16 19:09:41 2019 (r347887) +++ head/sys/mips/mips/pmap.c Thu May 16 19:10:48 2019 (r347888) @@ -854,6 +854,44 @@ pmap_kenter(vm_offset_t va, vm_paddr_t pa) pmap_kenter_attr(va, pa, VM_MEMATTR_DEFAULT); } +void +pmap_kenter_device(vm_offset_t va, vm_size_t size, vm_paddr_t pa) +{ + + KASSERT((size & PAGE_MASK) == 0, + ("%s: device mapping not page-sized", __func__)); + + for (; size > 0; size -= PAGE_SIZE) { + /* + * XXXCEM: this is somewhat inefficient on SMP systems in that + * every single page is individually TLB-invalidated via + * rendezvous (pmap_update_page()), instead of invalidating the + * entire range via a single rendezvous. + */ + pmap_kenter_attr(va, pa, VM_MEMATTR_UNCACHEABLE); + va += PAGE_SIZE; + pa += PAGE_SIZE; + } +} + +void +pmap_kremove_device(vm_offset_t va, vm_size_t size) +{ + + KASSERT((size & PAGE_MASK) == 0, + ("%s: device mapping not page-sized", __func__)); + + /* + * XXXCEM: Similar to pmap_kenter_device, this is inefficient on SMP, + * in that pages are invalidated individually instead of a single range + * rendezvous. + */ + for (; size > 0; size -= PAGE_SIZE) { + pmap_kremove(va); + va += PAGE_SIZE; + } +} + /* * remove a page from the kernel pagetables */