From b9e9defb5e603a8c0822c9e1f457fc823fab5a15 Mon Sep 17 00:00:00 2001 From: Thomas Bogendoerfer Date: Thu, 24 Oct 2019 12:18:28 +0200 Subject: [PATCH] MIPS: PCI: make phys_to_dma/dma_to_phys for pci-xtalk-bridge common All platforms using pci-xtalk-bridge can share common phys_to_dma/ dma_to_phys function. So we move it form ip27 specific file to pci-xtalk-bridge.c Signed-off-by: Thomas Bogendoerfer Signed-off-by: Paul Burton Cc: Ralf Baechle Cc: Paul Burton Cc: James Hogan Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- arch/mips/pci/pci-ip27.c | 13 ------------- arch/mips/pci/pci-xtalk-bridge.c | 16 ++++++++++++++++ 2 files changed, 16 insertions(+), 13 deletions(-) diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c index 441eb9383b20..45a0be40c0c3 100644 --- a/arch/mips/pci/pci-ip27.c +++ b/arch/mips/pci/pci-ip27.c @@ -9,19 +9,6 @@ */ #include -dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct bridge_controller *bc = BRIDGE_CONTROLLER(pdev->bus); - - return bc->baddr + paddr; -} - -phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) -{ - return dma_addr & ~(0xffUL << 56); -} - #ifdef CONFIG_NUMA int pcibus_to_node(struct pci_bus *bus) { diff --git a/arch/mips/pci/pci-xtalk-bridge.c b/arch/mips/pci/pci-xtalk-bridge.c index 312632171832..72e60df505f4 100644 --- a/arch/mips/pci/pci-xtalk-bridge.c +++ b/arch/mips/pci/pci-xtalk-bridge.c @@ -22,6 +22,22 @@ #define CRC16_INIT 0 #define CRC16_VALID 0xb001 +/* + * Common phys<->dma mapping for platforms using pci xtalk bridge + */ +dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) +{ + struct pci_dev *pdev = to_pci_dev(dev); + struct bridge_controller *bc = BRIDGE_CONTROLLER(pdev->bus); + + return bc->baddr + paddr; +} + +phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dma_addr) +{ + return dma_addr & ~(0xffUL << 56); +} + /* * Most of the IOC3 PCI config register aren't present * we emulate what is needed for a normal PCI enumeration -- GitLab