1. 24 Jan, 2017 7 commits
    • Bart Van Assche's avatar
      lib/dma-virt: Add dma_virt_ops · 551199ac
      Bart Van Assche authored
      Several RDMA drivers (hfi1, qib and rxe) expect that ib_sge.addr
      is a virtual address. Provide DMA mapping operations that are
      suitable for these drivers.
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Michael S. Tsirkin <mst@redhat.com>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      551199ac
    • Bart Van Assche's avatar
      lib/dma-noop: Only build dma_noop_ops for s390 and m32r · 7844572c
      Bart Van Assche authored
      Reduce the kernel size by only building dma_noop_ops for those
      architectures that actually use it. This was suggested by
      Christoph Hellwig.
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Michael S. Tsirkin <mst@redhat.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      7844572c
    • Bart Van Assche's avatar
      lib/dma-noop: Clarify a comment · 1eec9e2b
      Bart Van Assche authored
      The next patch in this series will introduce another set of DMA
      operations that map 1:1 with memory. Clarify that dma-noop maps
      to physical addresses.
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Cc: Christian Borntraeger <borntraeger@de.ibm.com>
      Cc: Joerg Roedel <jroedel@suse.de>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Michael S. Tsirkin <mst@redhat.com>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      1eec9e2b
    • Bart Van Assche's avatar
      treewide: Consolidate get_dma_ops() implementations · 815dd187
      Bart Van Assche authored
      Introduce a new architecture-specific get_arch_dma_ops() function
      that takes a struct bus_type * argument. Add get_dma_ops() in
      <linux/dma-mapping.h>.
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: linux-arch@vger.kernel.org
      Cc: linux-kernel@vger.kernel.org
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: x86@kernel.org
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      815dd187
    • Bart Van Assche's avatar
      treewide: Consolidate set_dma_ops() implementations · ca6e8e10
      Bart Van Assche authored
      Now that all set_dma_ops() implementations are identical (ignoring
      BUG_ON() statements), remove the architecture specific definitions
      and add a definition in <linux/dma-mapping.h>.
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Chris Metcalf <cmetcalf@mellanox.com>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: linux-arch@vger.kernel.org
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: linux-kernel@vger.kernel.org
      Cc: linuxppc-dev@lists.ozlabs.org
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Russell King <linux@armlinux.org.uk>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      ca6e8e10
    • Bart Van Assche's avatar
      treewide: Move dma_ops from struct dev_archdata into struct device · 5657933d
      Bart Van Assche authored
      Some but not all architectures provide set_dma_ops(). Move dma_ops
      from struct dev_archdata into struct device such that it becomes
      possible on all architectures to configure dma_ops per device.
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: linux-arch@vger.kernel.org
      Cc: linux-kernel@vger.kernel.org
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: x86@kernel.org
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      5657933d
    • Bart Van Assche's avatar
      treewide: Constify most dma_map_ops structures · 5299709d
      Bart Van Assche authored
      Most dma_map_ops structures are never modified. Constify these
      structures such that these can be write-protected. This patch
      has been generated as follows:
      
      git grep -l 'struct dma_map_ops' |
        xargs -d\\n sed -i \
          -e 's/struct dma_map_ops/const struct dma_map_ops/g' \
          -e 's/const struct dma_map_ops {/struct dma_map_ops {/g' \
          -e 's/^const struct dma_map_ops;$/struct dma_map_ops;/' \
          -e 's/const const struct dma_map_ops /const struct dma_map_ops /g';
      sed -i -e 's/const \(struct dma_map_ops intel_dma_ops\)/\1/' \
        $(git grep -l 'struct dma_map_ops intel_dma_ops');
      sed -i -e 's/const \(struct dma_map_ops dma_iommu_ops\)/\1/' \
        $(git grep -l 'struct dma_map_ops' | grep ^arch/powerpc);
      sed -i -e '/^struct vmd_dev {$/,/^};$/ s/const \(struct dma_map_ops[[:blank:]]dma_ops;\)/\1/' \
             -e '/^static void vmd_setup_dma_ops/,/^}$/ s/const \(struct dma_map_ops \*dest\)/\1/' \
             -e 's/const \(struct dma_map_ops \*dest = \&vmd->dma_ops\)/\1/' \
          drivers/pci/host/*.c
      sed -i -e '/^void __init pci_iommu_alloc(void)$/,/^}$/ s/dma_ops->/intel_dma_ops./' arch/ia64/kernel/pci-dma.c
      sed -i -e 's/static const struct dma_map_ops sn_dma_ops/static struct dma_map_ops sn_dma_ops/' arch/ia64/sn/pci/pci_dma.c
      sed -i -e 's/(const struct dma_map_ops \*)//' drivers/misc/mic/bus/vop_bus.c
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: linux-arch@vger.kernel.org
      Cc: linux-kernel@vger.kernel.org
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: x86@kernel.org
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      5299709d
  2. 13 Jan, 2017 4 commits
  3. 12 Jan, 2017 18 commits
  4. 10 Jan, 2017 11 commits