From 7bc082d7e97009f252bd432de5d476b0bcf3b266 Mon Sep 17 00:00:00 2001 From: Vidya Sagar Date: Tue, 25 Jun 2019 14:52:37 +0530 Subject: [PATCH] PCI: dwc: Cleanup DBI,ATU read and write APIs Cleanup DBI read and write APIs by removing leading "__" (underscore) from their names as there is no reason to have leading underscores in the first place in the function definition. Remove dbi/dbi2 base address parameters as the same behaviour can be obtained through read and write APIs. Since dw_pcie_{readl/writel}_dbi() APIs can't be used for ATU read/write as ATU base address could be different from DBI base address, implement ATU read/write APIs using ATU base address without using dw_pcie_{readl/writel}_dbi() APIs. Signed-off-by: Vidya Sagar Signed-off-by: Lorenzo Pieralisi Acked-by: Jingoo Han --- drivers/pci/controller/dwc/pcie-designware.c | 57 ++++++++++++++------ drivers/pci/controller/dwc/pcie-designware.h | 34 ++++++------ 2 files changed, 57 insertions(+), 34 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 9d7c51c32b3b..c2843ea1d1e8 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -52,68 +52,93 @@ int dw_pcie_write(void __iomem *addr, int size, u32 val) return PCIBIOS_SUCCESSFUL; } -u32 __dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, - size_t size) +u32 dw_pcie_read_dbi(struct dw_pcie *pci, u32 reg, size_t size) { int ret; u32 val; if (pci->ops->read_dbi) - return pci->ops->read_dbi(pci, base, reg, size); + return pci->ops->read_dbi(pci, pci->dbi_base, reg, size); - ret = dw_pcie_read(base + reg, size, &val); + ret = dw_pcie_read(pci->dbi_base + reg, size, &val); if (ret) dev_err(pci->dev, "Read DBI address failed\n"); return val; } -void __dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, - size_t size, u32 val) +void dw_pcie_write_dbi(struct dw_pcie *pci, u32 reg, size_t size, u32 val) { int ret; if (pci->ops->write_dbi) { - pci->ops->write_dbi(pci, base, reg, size, val); + pci->ops->write_dbi(pci, pci->dbi_base, reg, size, val); return; } - ret = dw_pcie_write(base + reg, size, val); + ret = dw_pcie_write(pci->dbi_base + reg, size, val); if (ret) dev_err(pci->dev, "Write DBI address failed\n"); } -u32 __dw_pcie_read_dbi2(struct dw_pcie *pci, void __iomem *base, u32 reg, - size_t size) +u32 dw_pcie_read_dbi2(struct dw_pcie *pci, u32 reg, size_t size) { int ret; u32 val; if (pci->ops->read_dbi2) - return pci->ops->read_dbi2(pci, base, reg, size); + return pci->ops->read_dbi2(pci, pci->dbi_base2, reg, size); - ret = dw_pcie_read(base + reg, size, &val); + ret = dw_pcie_read(pci->dbi_base2 + reg, size, &val); if (ret) dev_err(pci->dev, "read DBI address failed\n"); return val; } -void __dw_pcie_write_dbi2(struct dw_pcie *pci, void __iomem *base, u32 reg, - size_t size, u32 val) +void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val) { int ret; if (pci->ops->write_dbi2) { - pci->ops->write_dbi2(pci, base, reg, size, val); + pci->ops->write_dbi2(pci, pci->dbi_base2, reg, size, val); return; } - ret = dw_pcie_write(base + reg, size, val); + ret = dw_pcie_write(pci->dbi_base2 + reg, size, val); if (ret) dev_err(pci->dev, "write DBI address failed\n"); } +u32 dw_pcie_read_atu(struct dw_pcie *pci, u32 reg, size_t size) +{ + int ret; + u32 val; + + if (pci->ops->read_dbi) + return pci->ops->read_dbi(pci, pci->atu_base, reg, size); + + ret = dw_pcie_read(pci->atu_base + reg, size, &val); + if (ret) + dev_err(pci->dev, "Read ATU address failed\n"); + + return val; +} + +void dw_pcie_write_atu(struct dw_pcie *pci, u32 reg, size_t size, u32 val) +{ + int ret; + + if (pci->ops->write_dbi) { + pci->ops->write_dbi(pci, pci->atu_base, reg, size, val); + return; + } + + ret = dw_pcie_write(pci->atu_base + reg, size, val); + if (ret) + dev_err(pci->dev, "Write ATU address failed\n"); +} + static u32 dw_pcie_readl_ob_unroll(struct dw_pcie *pci, u32 index, u32 reg) { u32 offset = PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(index); diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 14762e262758..ffed084a0b4f 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -254,14 +254,12 @@ struct dw_pcie { int dw_pcie_read(void __iomem *addr, int size, u32 *val); int dw_pcie_write(void __iomem *addr, int size, u32 val); -u32 __dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, - size_t size); -void __dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, - size_t size, u32 val); -u32 __dw_pcie_read_dbi2(struct dw_pcie *pci, void __iomem *base, u32 reg, - size_t size); -void __dw_pcie_write_dbi2(struct dw_pcie *pci, void __iomem *base, u32 reg, - size_t size, u32 val); +u32 dw_pcie_read_dbi(struct dw_pcie *pci, u32 reg, size_t size); +void dw_pcie_write_dbi(struct dw_pcie *pci, u32 reg, size_t size, u32 val); +u32 dw_pcie_read_dbi2(struct dw_pcie *pci, u32 reg, size_t size); +void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val); +u32 dw_pcie_read_atu(struct dw_pcie *pci, u32 reg, size_t size); +void dw_pcie_write_atu(struct dw_pcie *pci, u32 reg, size_t size, u32 val); int dw_pcie_link_up(struct dw_pcie *pci); int dw_pcie_wait_for_link(struct dw_pcie *pci); void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, @@ -275,52 +273,52 @@ void dw_pcie_setup(struct dw_pcie *pci); static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val) { - __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x4, val); + dw_pcie_write_dbi(pci, reg, 0x4, val); } static inline u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg) { - return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x4); + return dw_pcie_read_dbi(pci, reg, 0x4); } static inline void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val) { - __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x2, val); + dw_pcie_write_dbi(pci, reg, 0x2, val); } static inline u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg) { - return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x2); + return dw_pcie_read_dbi(pci, reg, 0x2); } static inline void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val) { - __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x1, val); + dw_pcie_write_dbi(pci, reg, 0x1, val); } static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg) { - return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x1); + return dw_pcie_read_dbi(pci, reg, 0x1); } static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val) { - __dw_pcie_write_dbi2(pci, pci->dbi_base2, reg, 0x4, val); + dw_pcie_write_dbi2(pci, reg, 0x4, val); } static inline u32 dw_pcie_readl_dbi2(struct dw_pcie *pci, u32 reg) { - return __dw_pcie_read_dbi2(pci, pci->dbi_base2, reg, 0x4); + return dw_pcie_read_dbi2(pci, reg, 0x4); } static inline void dw_pcie_writel_atu(struct dw_pcie *pci, u32 reg, u32 val) { - __dw_pcie_write_dbi(pci, pci->atu_base, reg, 0x4, val); + dw_pcie_write_atu(pci, reg, 0x4, val); } static inline u32 dw_pcie_readl_atu(struct dw_pcie *pci, u32 reg) { - return __dw_pcie_read_dbi(pci, pci->atu_base, reg, 0x4); + return dw_pcie_read_atu(pci, reg, 0x4); } static inline void dw_pcie_dbi_ro_wr_en(struct dw_pcie *pci) -- 2.30.2