From: Christoph Hellwig <hch@lst.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Robin Murphy <robin.murphy@arm.com>,
linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org,
linux-ia64@vger.kernel.org
Subject: [PATCH 17/20] powerpc/dma-swiotlb: use generic swiotlb_dma_ops
Date: Mon, 30 Jul 2018 18:38:21 +0200 [thread overview]
Message-ID: <20180730163824.10064-18-hch@lst.de> (raw)
In-Reply-To: <20180730163824.10064-1-hch@lst.de>
These are identical to the arch specific ones, so remove them.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/powerpc/include/asm/dma-direct.h | 4 ++++
arch/powerpc/include/asm/swiotlb.h | 2 --
arch/powerpc/kernel/dma-swiotlb.c | 28 ++-------------------------
arch/powerpc/sysdev/fsl_pci.c | 2 +-
4 files changed, 7 insertions(+), 29 deletions(-)
diff --git a/arch/powerpc/include/asm/dma-direct.h b/arch/powerpc/include/asm/dma-direct.h
index 0fba19445ae8..657f84ddb20d 100644
--- a/arch/powerpc/include/asm/dma-direct.h
+++ b/arch/powerpc/include/asm/dma-direct.h
@@ -30,4 +30,8 @@ static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr)
return daddr - PCI_DRAM_OFFSET;
return daddr - dev->archdata.dma_offset;
}
+
+u64 swiotlb_powerpc_get_required(struct device *dev);
+#define swiotlb_get_required_mask swiotlb_powerpc_get_required
+
#endif /* ASM_POWERPC_DMA_DIRECT_H */
diff --git a/arch/powerpc/include/asm/swiotlb.h b/arch/powerpc/include/asm/swiotlb.h
index f65ecf57b66c..1d8c1da26ab3 100644
--- a/arch/powerpc/include/asm/swiotlb.h
+++ b/arch/powerpc/include/asm/swiotlb.h
@@ -13,8 +13,6 @@
#include <linux/swiotlb.h>
-extern const struct dma_map_ops powerpc_swiotlb_dma_ops;
-
extern unsigned int ppc_swiotlb_enable;
int __init swiotlb_setup_bus_notifier(void);
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c
index 25986fcd1e5e..0c269de61f39 100644
--- a/arch/powerpc/kernel/dma-swiotlb.c
+++ b/arch/powerpc/kernel/dma-swiotlb.c
@@ -24,7 +24,7 @@
unsigned int ppc_swiotlb_enable;
-static u64 swiotlb_powerpc_get_required(struct device *dev)
+u64 swiotlb_powerpc_get_required(struct device *dev)
{
u64 end, mask, max_direct_dma_addr = dev->archdata.max_direct_dma_addr;
@@ -38,30 +38,6 @@ static u64 swiotlb_powerpc_get_required(struct device *dev)
return mask;
}
-/*
- * At the moment, all platforms that use this code only require
- * swiotlb to be used if we're operating on HIGHMEM. Since
- * we don't ever call anything other than map_sg, unmap_sg,
- * map_page, and unmap_page on highmem, use normal dma_ops
- * for everything else.
- */
-const struct dma_map_ops powerpc_swiotlb_dma_ops = {
- .alloc = dma_direct_alloc,
- .free = dma_direct_free,
- .mmap = dma_nommu_mmap_coherent,
- .map_sg = swiotlb_map_sg_attrs,
- .unmap_sg = swiotlb_unmap_sg_attrs,
- .dma_supported = swiotlb_dma_supported,
- .map_page = swiotlb_map_page,
- .unmap_page = swiotlb_unmap_page,
- .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
- .sync_single_for_device = swiotlb_sync_single_for_device,
- .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
- .sync_sg_for_device = swiotlb_sync_sg_for_device,
- .mapping_error = swiotlb_dma_mapping_error,
- .get_required_mask = swiotlb_powerpc_get_required,
-};
-
void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev)
{
struct pci_controller *hose;
@@ -88,7 +64,7 @@ static int ppc_swiotlb_bus_notify(struct notifier_block *nb,
/* May need to bounce if the device can't address all of DRAM */
if ((dma_get_mask(dev) + 1) < memblock_end_of_DRAM())
- set_dma_ops(dev, &powerpc_swiotlb_dma_ops);
+ set_dma_ops(dev, &swiotlb_dma_ops);
return NOTIFY_DONE;
}
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 918be816b097..daf44bc0108d 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -118,7 +118,7 @@ static void setup_swiotlb_ops(struct pci_controller *hose)
{
if (ppc_swiotlb_enable) {
hose->controller_ops.dma_dev_setup = pci_dma_dev_setup_swiotlb;
- set_pci_dma_ops(&powerpc_swiotlb_dma_ops);
+ set_pci_dma_ops(&swiotlb_dma_ops);
}
}
#else
--
2.18.0
next prev parent reply other threads:[~2018-07-30 16:39 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-30 16:38 use generic DMA mapping code in powerpc Christoph Hellwig
2018-07-30 16:38 ` [PATCH 01/20] kernel/dma/direct: take DMA offset into account in dma_direct_supported Christoph Hellwig
2018-08-08 23:44 ` Benjamin Herrenschmidt
2018-08-22 6:53 ` Christoph Hellwig
2018-08-22 23:59 ` Benjamin Herrenschmidt
2018-08-23 5:24 ` Christoph Hellwig
2018-08-23 5:24 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 02/20] kernel/dma/direct: refine dma_direct_alloc zone selection Christoph Hellwig
2018-08-08 23:54 ` Benjamin Herrenschmidt
2018-08-22 6:58 ` Christoph Hellwig
2018-08-23 0:01 ` Benjamin Herrenschmidt
2018-08-23 5:26 ` Christoph Hellwig
2018-07-30 16:38 ` [PATCH 03/20] dma-mapping: make the get_required_mask method available unconditionally Christoph Hellwig
2018-07-30 16:38 ` [PATCH 04/20] ia64: remove get_required_mask implementation Christoph Hellwig
2018-07-30 16:38 ` [PATCH 05/20] swiotlb: allow the architecture to provide a get_required_mask hook Christoph Hellwig
2018-08-27 16:06 ` Konrad Rzeszutek Wilk
2018-07-30 16:38 ` [PATCH 06/20] dma-noncoherent: add an optional arch hook for ->get_required_mask Christoph Hellwig
2018-07-30 16:38 ` [PATCH 07/20] powerpc/dma: remove the unused ARCH_HAS_DMA_MMAP_COHERENT define Christoph Hellwig
2018-08-08 23:56 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 08/20] powerpc/dma: remove the unused dma_nommu_ops export Christoph Hellwig
2018-07-31 12:16 ` Christoph Hellwig
2018-08-09 0:01 ` Benjamin Herrenschmidt
2018-08-22 6:45 ` Christoph Hellwig
2018-08-22 23:50 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 09/20] powerpc/dma: remove the unused ISA_DMA_THRESHOLD export Christoph Hellwig
2018-08-09 0:14 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 10/20] powerpc/dma-noncoherent: don't disable irqs over kmap_atomic Christoph Hellwig
2018-08-09 0:27 ` Benjamin Herrenschmidt
2018-08-22 7:02 ` Christoph Hellwig
2018-08-22 23:45 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 11/20] powerpc/dma: split the two __dma_alloc_coherent implementations Christoph Hellwig
2018-08-09 0:40 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 12/20] powerpc/dma: use phys_to_dma instead of get_dma_offset Christoph Hellwig
2018-08-09 0:43 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 13/20] powerpc/dma: remove get_dma_offset Christoph Hellwig
2018-08-09 0:45 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 14/20] powerpc/dma: replace dma_nommu_dma_supported with dma_direct_supported Christoph Hellwig
2018-08-09 0:49 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 15/20] powerpc/dma: remove the unused unmap_page and unmap_sg methods Christoph Hellwig
2018-08-09 0:49 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 16/20] powerpc/dma: use dma_direct_{alloc,free} Christoph Hellwig
2018-08-09 0:52 ` Benjamin Herrenschmidt
2018-08-27 8:51 ` Scott Wood
2018-07-30 16:38 ` Christoph Hellwig [this message]
2018-08-09 0:54 ` [PATCH 17/20] powerpc/dma-swiotlb: use generic swiotlb_dma_ops Benjamin Herrenschmidt
2018-08-09 1:57 ` Benjamin Herrenschmidt
2018-08-22 7:04 ` Christoph Hellwig
2018-07-30 16:38 ` [PATCH 18/20] powerpc/dma-noncoherent: use generic dma_noncoherent_ops Christoph Hellwig
2018-08-09 1:00 ` Benjamin Herrenschmidt
2018-07-30 16:38 ` [PATCH 19/20] powerpc/dma: use the generic dma-direct map_page and map_sg routines Christoph Hellwig
2018-07-30 16:38 ` [PATCH 20/20] powerpc/dma: remove dma_nommu_mmap_coherent Christoph Hellwig
2018-08-09 1:05 ` Benjamin Herrenschmidt
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