From: Christoph Hellwig <hch@lst.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 11/33] powerpc/cell: move dma direct window setup out of dma_configure
Date: Tue, 9 Oct 2018 15:24:38 +0200 [thread overview]
Message-ID: <20181009132500.17643-12-hch@lst.de> (raw)
In-Reply-To: <20181009132500.17643-1-hch@lst.de>
Configure the dma settings at device setup time, and stop playing games
with get_pci_dma_ops. This prepares for using the common dma_configure
code later on.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/powerpc/platforms/cell/iommu.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 12352a58072a..cce5bf9515e5 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -657,14 +657,21 @@ static const struct dma_map_ops dma_iommu_fixed_ops = {
.mapping_error = dma_iommu_mapping_error,
};
+static u64 cell_iommu_get_fixed_address(struct device *dev);
+
static void cell_dma_dev_setup(struct device *dev)
{
- if (get_pci_dma_ops() == &dma_iommu_ops)
+ if (get_pci_dma_ops() == &dma_iommu_ops) {
+ u64 addr = cell_iommu_get_fixed_address(dev);
+
+ if (addr != OF_BAD_ADDR)
+ set_dma_offset(dev, addr + dma_iommu_fixed_base);
set_iommu_table_base(dev, cell_get_iommu_table(dev));
- else if (get_pci_dma_ops() == &dma_nommu_ops)
+ } else if (get_pci_dma_ops() == &dma_nommu_ops) {
set_dma_offset(dev, cell_dma_nommu_offset);
- else
+ } else {
BUG();
+ }
}
static void cell_pci_dma_dev_setup(struct pci_dev *dev)
@@ -950,19 +957,14 @@ static int dma_suported_and_switch(struct device *dev, u64 dma_mask)
{
if (dma_mask == DMA_BIT_MASK(64) &&
cell_iommu_get_fixed_address(dev) != OF_BAD_ADDR) {
- u64 addr = cell_iommu_get_fixed_address(dev) +
- dma_iommu_fixed_base;
dev_dbg(dev, "iommu: 64-bit OK, using fixed ops\n");
- dev_dbg(dev, "iommu: fixed addr = %llx\n", addr);
set_dma_ops(dev, &dma_iommu_fixed_ops);
- set_dma_offset(dev, addr);
return 1;
}
if (dma_iommu_dma_supported(dev, dma_mask)) {
dev_dbg(dev, "iommu: not 64-bit, using default ops\n");
- set_dma_ops(dev, get_pci_dma_ops());
- cell_dma_dev_setup(dev);
+ set_dma_ops(dev, &dma_iommu_ops);
return 1;
}
--
2.19.0
next prev parent reply other threads:[~2018-10-09 13:25 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-09 13:24 use generic DMA mapping code in powerpc V3 Christoph Hellwig
2018-10-09 13:24 ` [PATCH 01/33] powerpc: use mm zones more sensibly Christoph Hellwig
2018-10-15 0:47 ` Benjamin Herrenschmidt
2018-10-09 13:24 ` [PATCH 02/33] powerpc/dma: remove the unused ARCH_HAS_DMA_MMAP_COHERENT define Christoph Hellwig
2018-10-09 13:24 ` [PATCH 03/33] powerpc/dma: remove the unused ISA_DMA_THRESHOLD export Christoph Hellwig
2018-10-09 13:24 ` [PATCH 04/33] powerpc/dma: remove the unused dma_iommu_ops export Christoph Hellwig
2018-10-09 13:24 ` [PATCH 05/33] powerpc/dma: split the two __dma_alloc_coherent implementations Christoph Hellwig
2018-10-09 13:24 ` [PATCH 06/33] powerpc/dma: remove the no-op dma_nommu_unmap_{page,sg} routines Christoph Hellwig
2018-10-09 13:24 ` [PATCH 07/33] powerpc/dma: untangle vio_dma_mapping_ops from dma_iommu_ops Christoph Hellwig
2018-10-09 13:24 ` [PATCH 08/33] powerpc/dma: handle iommu bypass in dma_iommu_ops Christoph Hellwig
2018-10-09 13:24 ` [PATCH 09/33] powerpc/pseries: unwind dma_get_required_mask_pSeriesLP a bit Christoph Hellwig
2018-10-09 13:24 ` [PATCH 10/33] powerpc/pseries: use the generic iommu bypass code Christoph Hellwig
2018-10-09 13:24 ` Christoph Hellwig [this message]
2018-10-09 13:24 ` [PATCH 12/33] powerpc/cell: " Christoph Hellwig
2018-10-09 13:24 ` [PATCH 13/33] powerpc/dart: remove dead cleanup code in iommu_init_early_dart Christoph Hellwig
2018-10-09 13:24 ` [PATCH 14/33] powerpc/dart: use the generic iommu bypass code Christoph Hellwig
2018-10-09 13:24 ` [PATCH 15/33] powerpc/powernv: remove pnv_pci_ioda_pe_single_vendor Christoph Hellwig
2018-10-09 13:24 ` [PATCH 16/33] powerpc/powernv: remove dead npu-dma code Christoph Hellwig
2018-10-15 1:34 ` Alexey Kardashevskiy
2018-10-15 2:45 ` Benjamin Herrenschmidt
2018-10-15 5:50 ` Christoph Hellwig
2018-10-09 13:24 ` [PATCH 17/33] powerpc/powernv: use the generic iommu bypass code Christoph Hellwig
2018-10-09 13:24 ` [PATCH 18/33] powerpc/dma: stop overriding dma_get_required_mask Christoph Hellwig
2018-10-09 13:24 ` [PATCH 19/33] powerpc/pci: remove the dma_set_mask pci_controller ops methods Christoph Hellwig
2018-10-09 13:24 ` [PATCH 20/33] powerpc/dma: remove the iommu fallback for coherent allocations Christoph Hellwig
2018-10-09 13:24 ` [PATCH 21/33] powerpc/dma: remove get_pci_dma_ops Christoph Hellwig
2018-10-09 13:24 ` [PATCH 22/33] powerpc/dma: move pci_dma_dev_setup_swiotlb to fsl_pci.c Christoph Hellwig
2018-10-09 13:24 ` [PATCH 23/33] powerpc/dma: remove max_direct_dma_addr Christoph Hellwig
2018-10-09 13:24 ` [PATCH 24/33] powerpc/dma: fix an off-by-one in dma_capable Christoph Hellwig
2018-10-09 13:24 ` [PATCH 25/33] cxl: drop the dma_set_mask callback from vphb Christoph Hellwig
2018-10-09 13:24 ` [PATCH 26/33] powerpc/fsl_pci: simplify fsl_pci_dma_set_mask Christoph Hellwig
2018-10-09 13:24 ` [PATCH 27/33] dma-mapping, powerpc: simplify the arch dma_set_mask override Christoph Hellwig
2018-10-09 13:24 ` [PATCH 28/33] powerpc/dma: use phys_to_dma instead of get_dma_offset Christoph Hellwig
2018-10-09 13:24 ` [PATCH 29/33] powerpc/dma: remove get_dma_offset Christoph Hellwig
2018-10-09 13:24 ` [PATCH 30/33] powerpc/dma: remove set_dma_offset Christoph Hellwig
2018-10-09 13:24 ` [PATCH 31/33] powerpc/dma: remove dma_nommu_mmap_coherent Christoph Hellwig
2018-10-09 13:24 ` [PATCH 32/33] powerpc/dma: use generic direct and swiotlb ops Christoph Hellwig
2018-10-09 13:25 ` [PATCH 33/33] powerpc/dma: trim the fat from <asm/dma-mapping.h> Christoph Hellwig
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