From: Jim Quinlan <james.quinlan@broadcom•com>
To: james.quinlan@broadcom•com,
Nicolas Saenz Julienne <nsaenzjulienne@suse•de>
Cc: Ulf Hansson <ulf.hansson@linaro•org>,
Stefano Stabellini <sstabellini@kernel•org>,
Russell King <linux@armlinux•org.uk>,
open list <linux-kernel@vger•kernel.org>,
Julien Grall <julien.grall@arm•com>,
"moderated list:ARM PORT" <linux-arm-kernel@lists•infradead.org>
Subject: [PATCH 11/15] arm: dma-mapping: Invoke dma offset func if needed
Date: Tue, 19 May 2020 16:34:09 -0400 [thread overview]
Message-ID: <20200519203419.12369-12-james.quinlan@broadcom.com> (raw)
In-Reply-To: <20200519203419.12369-1-james.quinlan@broadcom.com>
Just like dma_pfn_offset, another offset is added to
the dma/phys translation if there happen to be multiple
regions that have different mapping offsets.
Signed-off-by: Jim Quinlan <james.quinlan@broadcom•com>
---
arch/arm/include/asm/dma-mapping.h | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index bdd80ddbca34..f0c0a1fa9ac0 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -35,8 +35,14 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
#ifndef __arch_pfn_to_dma
static inline dma_addr_t pfn_to_dma(struct device *dev, unsigned long pfn)
{
- if (dev)
+ if (dev) {
+#ifdef CONFIG_DMA_PFN_OFFSET_MAP
+ if (unlikely(dev->dma_offset_map))
+ pfn -= dma_pfn_offset_frm_phys_addr(
+ dev->dma_offset_map, PFN_PHYS(pfn));
+#endif
pfn -= dev->dma_pfn_offset;
+ }
return (dma_addr_t)__pfn_to_bus(pfn);
}
@@ -44,9 +50,14 @@ static inline unsigned long dma_to_pfn(struct device *dev, dma_addr_t addr)
{
unsigned long pfn = __bus_to_pfn(addr);
- if (dev)
+ if (dev) {
+#ifdef CONFIG_DMA_PFN_OFFSET_MAP
+ if (unlikely(dev->dma_offset_map))
+ pfn += dma_pfn_offset_frm_dma_addr(
+ dev->dma_offset_map, addr);
+#endif
pfn += dev->dma_pfn_offset;
-
+ }
return pfn;
}
--
2.17.1
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next prev parent reply other threads:[~2020-05-19 20:36 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-19 20:33 [PATCH 00/15] PCI: brcmstb: enable PCIe for STB chips Jim Quinlan
2020-05-19 20:34 ` [PATCH 03/15] dt-bindings: PCI: Add bindings for more Brcmstb chips Jim Quinlan
2020-05-19 20:34 ` [PATCH 04/15] PCI: brcmstb: Add compatibily of other chips Jim Quinlan
2020-05-20 11:51 ` Nicolas Saenz Julienne
2020-05-20 14:30 ` Jim Quinlan
2020-05-20 14:41 ` Nicolas Saenz Julienne
2020-05-21 19:35 ` Jim Quinlan
2020-05-22 9:17 ` Nicolas Saenz Julienne
2020-05-19 20:34 ` [PATCH 05/15] PCI: brcmstb: Add suspend and resume pm_ops Jim Quinlan
2020-05-19 20:34 ` [PATCH 06/15] PCI: brcmstb: Asserting PERST is different for 7278 Jim Quinlan
2020-05-19 20:34 ` [PATCH 07/15] PCI: brcmstb: Add control of rescal reset Jim Quinlan
2020-05-20 7:27 ` Philipp Zabel
2020-05-21 21:48 ` Jim Quinlan
2020-05-25 16:58 ` Florian Fainelli
2020-05-19 20:34 ` Jim Quinlan [this message]
2020-05-19 20:34 ` [PATCH 12/15] PCI: brcmstb: Set internal memory viewport sizes Jim Quinlan
2020-05-19 20:34 ` [PATCH 13/15] PCI: brcmstb: Accommodate MSI for older chips Jim Quinlan
2020-05-19 20:34 ` [PATCH 14/15] PCI: brcmstb: Set bus max burst side by chip type Jim Quinlan
2020-05-20 13:44 ` Nicolas Saenz Julienne
2020-05-20 14:27 ` Jim Quinlan
2020-05-19 20:34 ` [PATCH 15/15] PCI: brcmstb: add compatilbe chips to match list Jim Quinlan
2020-05-20 16:15 ` [PATCH 00/15] PCI: brcmstb: enable PCIe for STB chips Bjorn Helgaas
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