[src/trunk]: src/sys/rump implement bus_dmamem_free()

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/12b9a452ecf5
branches:  trunk
changeset: 808812:12b9a452ecf5
user:      pooka <pooka%NetBSD.org@localhost>
date:      Wed Jun 03 13:55:42 2015 +0000

description:
implement bus_dmamem_free()

from Robert Millan <rmh%freebsd.org@localhost> via rumpkernel-users

diffstat:

 sys/rump/dev/lib/libpci/pci_user.h        |   3 +++
 sys/rump/dev/lib/libpci/rumpdev_bus_dma.c |  13 ++++++++++++-
 sys/rump/include/sys/bus.h                |   3 ++-
 3 files changed, 17 insertions(+), 2 deletions(-)

diffs (85 lines):

diff -r 0958559cabfe -r 12b9a452ecf5 sys/rump/dev/lib/libpci/pci_user.h
--- a/sys/rump/dev/lib/libpci/pci_user.h        Wed Jun 03 13:43:23 2015 +0000
+++ b/sys/rump/dev/lib/libpci/pci_user.h        Wed Jun 03 13:55:42 2015 +0000
@@ -9,6 +9,9 @@
 
 /* XXX: needs work: support boundary-restricted allocations */
 int rumpcomp_pci_dmalloc(size_t, size_t, unsigned long *, unsigned long *);
+#ifdef rumpcomp_pci_free
+void rumpcomp_pci_free(unsigned long, size_t);
+#endif
 
 struct rumpcomp_pci_dmaseg {
        unsigned long ds_pa;
diff -r 0958559cabfe -r 12b9a452ecf5 sys/rump/dev/lib/libpci/rumpdev_bus_dma.c
--- a/sys/rump/dev/lib/libpci/rumpdev_bus_dma.c Wed Jun 03 13:43:23 2015 +0000
+++ b/sys/rump/dev/lib/libpci/rumpdev_bus_dma.c Wed Jun 03 13:55:42 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: rumpdev_bus_dma.c,v 1.3 2014/04/14 21:43:00 pooka Exp $        */
+/*     $NetBSD: rumpdev_bus_dma.c,v 1.4 2015/06/03 13:55:42 pooka Exp $        */
 
 /*-
  * Copyright (c) 2013 Antti Kantee
@@ -446,8 +446,14 @@
 void
 bus_dmamem_free(bus_dma_tag_t t, bus_dma_segment_t *segs, int nsegs)
 {
+#ifdef rumpcomp_pci_free
+       vaddr_t vacookie = segs[0]._ds_vacookie;
+       bus_size_t sizecookie = segs[0]._ds_sizecookie;
 
+       rumpcomp_pci_free(vacookie, sizecookie);
+#else
        panic("bus_dmamem_free not implemented");
+#endif
 }
 
 /*
@@ -509,11 +515,14 @@
 {
        paddr_t curaddr, lastaddr, pa;
        vaddr_t vacookie;
+       size_t sizecookie;
        int curseg, error;
 
        /* Always round the size. */
        size = round_page(size);
 
+       sizecookie = size;
+
        /*
         * Allocate pages from the VM system.
         */
@@ -536,6 +545,7 @@
        lastaddr = segs[curseg].ds_addr = pa;
        segs[curseg].ds_len = PAGE_SIZE;
        segs[curseg]._ds_vacookie = vacookie;
+       segs[curseg]._ds_sizecookie = sizecookie;
        size -= PAGE_SIZE;
        pa += PAGE_SIZE;
        vacookie += PAGE_SIZE;
@@ -553,6 +563,7 @@
                        segs[curseg].ds_addr = curaddr;
                        segs[curseg].ds_len = PAGE_SIZE;
                        segs[curseg]._ds_vacookie = vacookie;
+                       segs[curseg]._ds_sizecookie = sizecookie;
                }
                lastaddr = curaddr;
        }
diff -r 0958559cabfe -r 12b9a452ecf5 sys/rump/include/sys/bus.h
--- a/sys/rump/include/sys/bus.h        Wed Jun 03 13:43:23 2015 +0000
+++ b/sys/rump/include/sys/bus.h        Wed Jun 03 13:55:42 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bus.h,v 1.5 2014/04/14 21:31:00 pooka Exp $    */
+/*     $NetBSD: bus.h,v 1.6 2015/06/03 13:55:42 pooka Exp $    */
 
 /*
  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
@@ -48,6 +48,7 @@
        bus_addr_t      ds_addr;
        bus_size_t      ds_len;
        vaddr_t         _ds_vacookie;
+       bus_size_t      _ds_sizecookie;
 } bus_dma_segment_t;
 
 typedef struct {