[v3,5/7] PCI: dwc: all: Modify dbi accessors to access data of 4/2/1 bytes

Message ID	1488970037-17740-6-git-send-email-kishon@ti.com (mailing list archive)
State	Not Applicable
Headers	show Return-Path: <linux-samsung-soc-owner@kernel.org> From: Kishon Vijay Abraham I <kishon@ti.com> To: Bjorn Helgaas <bhelgaas@google.com>, Joao Pinto <Joao.Pinto@synopsys.com>, <linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <linux-omap@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-samsung-soc@vger.kernel.org>, <linux-arm-kernel@axis.com> CC: <nsekhar@ti.com>, Kishon Vijay Abraham I <kishon@ti.com>, Jingoo Han <jingoohan1@gmail.com>, Richard Zhu <hongxing.zhu@nxp.com>, Lucas Stach <l.stach@pengutronix.de>, Murali Karicheri <m-karicheri2@ti.com>, Thomas Petazzoni <thomas.petazzoni@free-electrons.com>, Niklas Cassel <niklas.cassel@axis.com>, Jesper Nilsson <jesper.nilsson@axis.com>, Zhou Wang <wangzhou1@hisilicon.com>, Gabriele Paoloni <gabriele.paoloni@huawei.com> Subject: [PATCH v3 5/7] PCI: dwc: all: Modify dbi accessors to access data of 4/2/1 bytes Date: Wed, 8 Mar 2017 16:17:15 +0530 Message-ID: <1488970037-17740-6-git-send-email-kishon@ti.com> In-Reply-To: <1488970037-17740-1-git-send-email-kishon@ti.com> References: <1488970037-17740-1-git-send-email-kishon@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c index 3708bd6..c6fef0a 100644 --- a/drivers/pci/dwc/pci-dra7xx.c +++ b/drivers/pci/dwc/pci-dra7xx.c @@ -499,9 +499,9 @@ static int dra7xx_pcie_suspend(struct device *dev) u32 val; /* clear MSE */ - val = dw_pcie_readl_dbi(pci, base, PCI_COMMAND); + val = dw_pcie_read_dbi(pci, base, PCI_COMMAND, 0x4); val &= ~PCI_COMMAND_MEMORY; - dw_pcie_writel_dbi(pci, base, PCI_COMMAND, val); + dw_pcie_write_dbi(pci, base, PCI_COMMAND, 0x4, val); return 0; } @@ -514,9 +514,9 @@ static int dra7xx_pcie_resume(struct device *dev) u32 val; /* set MSE */ - val = dw_pcie_readl_dbi(pci, base, PCI_COMMAND); + val = dw_pcie_read_dbi(pci, base, PCI_COMMAND, 0x4); val |= PCI_COMMAND_MEMORY; - dw_pcie_writel_dbi(pci, base, PCI_COMMAND, val); + dw_pcie_write_dbi(pci, base, PCI_COMMAND, 0x4, val); return 0; } diff --git a/drivers/pci/dwc/pci-exynos.c b/drivers/pci/dwc/pci-exynos.c index a0d40f7..37d6d2b 100644 --- a/drivers/pci/dwc/pci-exynos.c +++ b/drivers/pci/dwc/pci-exynos.c @@ -521,25 +521,25 @@ static void exynos_pcie_enable_interrupts(struct exynos_pcie *ep) exynos_pcie_msi_init(ep); } -static u32 exynos_pcie_readl_dbi(struct dw_pcie *pci, void __iomem *base, - u32 reg) +static u32 exynos_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, + u32 reg, size_t size) { struct exynos_pcie *ep = to_exynos_pcie(pci); u32 val; exynos_pcie_sideband_dbi_r_mode(ep, true); - val = readl(base + reg); + dw_pcie_read(base + reg, size, &val); exynos_pcie_sideband_dbi_r_mode(ep, false); return val; } -static void exynos_pcie_writel_dbi(struct dw_pcie *pci, void __iomem *base, - u32 reg, u32 val) +static void exynos_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, + u32 reg, size_t size, u32 val) { struct exynos_pcie *ep = to_exynos_pcie(pci); exynos_pcie_sideband_dbi_w_mode(ep, true); - writel(val, base + reg); + dw_pcie_write(base + reg, size, val); exynos_pcie_sideband_dbi_w_mode(ep, false); } @@ -646,8 +646,8 @@ static int __init exynos_add_pcie_port(struct exynos_pcie *ep, } static const struct dw_pcie_ops dw_pcie_ops = { - .readl_dbi = exynos_pcie_readl_dbi, - .writel_dbi = exynos_pcie_writel_dbi, + .read_dbi = exynos_pcie_read_dbi, + .write_dbi = exynos_pcie_write_dbi, .link_up = exynos_pcie_link_up, }; diff --git a/drivers/pci/dwc/pci-imx6.c b/drivers/pci/dwc/pci-imx6.c index 85dd901..e58ca7a 100644 --- a/drivers/pci/dwc/pci-imx6.c +++ b/drivers/pci/dwc/pci-imx6.c @@ -104,7 +104,7 @@ static int pcie_phy_poll_ack(struct imx6_pcie *imx6_pcie, int exp_val) u32 wait_counter = 0; do { - val = dw_pcie_readl_dbi(pci, base, PCIE_PHY_STAT); + val = dw_pcie_read_dbi(pci, base, PCIE_PHY_STAT, 0x4); val = (val >> PCIE_PHY_STAT_ACK_LOC) & 0x1; wait_counter++; @@ -125,17 +125,17 @@ static int pcie_phy_wait_ack(struct imx6_pcie *imx6_pcie, int addr) int ret; val = addr << PCIE_PHY_CTRL_DATA_LOC; - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, val); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, val); val |= (0x1 << PCIE_PHY_CTRL_CAP_ADR_LOC); - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, val); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, val); ret = pcie_phy_poll_ack(imx6_pcie, 1); if (ret) return ret; val = addr << PCIE_PHY_CTRL_DATA_LOC; - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, val); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, val); return pcie_phy_poll_ack(imx6_pcie, 0); } @@ -154,17 +154,17 @@ static int pcie_phy_read(struct imx6_pcie *imx6_pcie, int addr, int *data) /* assert Read signal */ phy_ctl = 0x1 << PCIE_PHY_CTRL_RD_LOC; - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, phy_ctl); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, phy_ctl); ret = pcie_phy_poll_ack(imx6_pcie, 1); if (ret) return ret; - val = dw_pcie_readl_dbi(pci, base, PCIE_PHY_STAT); + val = dw_pcie_read_dbi(pci, base, PCIE_PHY_STAT, 0x4); *data = val & 0xffff; /* deassert Read signal */ - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, 0x00); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, 0x00); return pcie_phy_poll_ack(imx6_pcie, 0); } @@ -183,11 +183,11 @@ static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, int data) return ret; var = data << PCIE_PHY_CTRL_DATA_LOC; - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, var); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, var); /* capture data */ var |= (0x1 << PCIE_PHY_CTRL_CAP_DAT_LOC); - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, var); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, var); ret = pcie_phy_poll_ack(imx6_pcie, 1); if (ret) @@ -195,7 +195,7 @@ static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, int data) /* deassert cap data */ var = data << PCIE_PHY_CTRL_DATA_LOC; - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, var); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, var); /* wait for ack de-assertion */ ret = pcie_phy_poll_ack(imx6_pcie, 0); @@ -204,7 +204,7 @@ static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, int data) /* assert wr signal */ var = 0x1 << PCIE_PHY_CTRL_WR_LOC; - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, var); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, var); /* wait for ack */ ret = pcie_phy_poll_ack(imx6_pcie, 1); @@ -213,14 +213,14 @@ static int pcie_phy_write(struct imx6_pcie *imx6_pcie, int addr, int data) /* deassert wr signal */ var = data << PCIE_PHY_CTRL_DATA_LOC; - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, var); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, var); /* wait for ack de-assertion */ ret = pcie_phy_poll_ack(imx6_pcie, 0); if (ret) return ret; - dw_pcie_writel_dbi(pci, base, PCIE_PHY_CTRL, 0x0); + dw_pcie_write_dbi(pci, base, PCIE_PHY_CTRL, 0x4, 0x0); return 0; } @@ -423,8 +423,8 @@ static int imx6_pcie_wait_for_link(struct imx6_pcie *imx6_pcie) return 0; dev_dbg(dev, "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n", - dw_pcie_readl_dbi(pci, base, PCIE_PHY_DEBUG_R0), - dw_pcie_readl_dbi(pci, base, PCIE_PHY_DEBUG_R1)); + dw_pcie_read_dbi(pci, base, PCIE_PHY_DEBUG_R0, 0x4), + dw_pcie_read_dbi(pci, base, PCIE_PHY_DEBUG_R1, 0x4)); return -ETIMEDOUT; } @@ -437,8 +437,8 @@ static int imx6_pcie_wait_for_speed_change(struct imx6_pcie *imx6_pcie) unsigned int retries; for (retries = 0; retries < 200; retries++) { - tmp = dw_pcie_readl_dbi(pci, base, - PCIE_LINK_WIDTH_SPEED_CONTROL); + tmp = dw_pcie_read_dbi(pci, base, + PCIE_LINK_WIDTH_SPEED_CONTROL, 0x4); /* Test if the speed change finished. */ if (!(tmp & PORT_LOGIC_SPEED_CHANGE)) return 0; @@ -471,10 +471,10 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) * started in Gen2 mode, there is a possibility the devices on the * bus will not be detected at all. This happens with PCIe switches. */ - tmp = dw_pcie_readl_dbi(pci, base, PCIE_RC_LCR); + tmp = dw_pcie_read_dbi(pci, base, PCIE_RC_LCR, 0x4); tmp &= ~PCIE_RC_LCR_MAX_LINK_SPEEDS_MASK; tmp |= PCIE_RC_LCR_MAX_LINK_SPEEDS_GEN1; - dw_pcie_writel_dbi(pci, base, PCIE_RC_LCR, tmp); + dw_pcie_write_dbi(pci, base, PCIE_RC_LCR, 0x4, tmp); /* Start LTSSM. */ regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12, @@ -486,10 +486,10 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) if (imx6_pcie->link_gen == 2) { /* Allow Gen2 mode after the link is up. */ - tmp = dw_pcie_readl_dbi(pci, base, PCIE_RC_LCR); + tmp = dw_pcie_read_dbi(pci, base, PCIE_RC_LCR, 0x4); tmp &= ~PCIE_RC_LCR_MAX_LINK_SPEEDS_MASK; tmp |= PCIE_RC_LCR_MAX_LINK_SPEEDS_GEN2; - dw_pcie_writel_dbi(pci, base, PCIE_RC_LCR, tmp); + dw_pcie_write_dbi(pci, base, PCIE_RC_LCR, 0x4, tmp); } else { dev_info(dev, "Link: Gen2 disabled\n"); } @@ -498,9 +498,9 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) * Start Directed Speed Change so the best possible speed both link * partners support can be negotiated. */ - tmp = dw_pcie_readl_dbi(pci, base, PCIE_LINK_WIDTH_SPEED_CONTROL); + tmp = dw_pcie_read_dbi(pci, base, PCIE_LINK_WIDTH_SPEED_CONTROL, 0x4); tmp |= PORT_LOGIC_SPEED_CHANGE; - dw_pcie_writel_dbi(pci, base, PCIE_LINK_WIDTH_SPEED_CONTROL, tmp); + dw_pcie_write_dbi(pci, base, PCIE_LINK_WIDTH_SPEED_CONTROL, 0x4, tmp); ret = imx6_pcie_wait_for_speed_change(imx6_pcie); if (ret) { @@ -515,14 +515,14 @@ static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) goto err_reset_phy; } - tmp = dw_pcie_readl_dbi(pci, base, PCIE_RC_LCSR); + tmp = dw_pcie_read_dbi(pci, base, PCIE_RC_LCSR, 0x4); dev_info(dev, "Link up, Gen%i\n", (tmp >> 16) & 0xf); return 0; err_reset_phy: dev_dbg(dev, "PHY DEBUG_R0=0x%08x DEBUG_R1=0x%08x\n", - dw_pcie_readl_dbi(pci, base, PCIE_PHY_DEBUG_R0), - dw_pcie_readl_dbi(pci, base, PCIE_PHY_DEBUG_R1)); + dw_pcie_read_dbi(pci, base, PCIE_PHY_DEBUG_R0, 0x4), + dw_pcie_read_dbi(pci, base, PCIE_PHY_DEBUG_R1, 0x4)); imx6_pcie_reset_phy(imx6_pcie); return ret; } @@ -546,7 +546,7 @@ static int imx6_pcie_link_up(struct dw_pcie *pci) { void __iomem *base = pci->dbi_base; - return dw_pcie_readl_dbi(pci, base, PCIE_PHY_DEBUG_R1) & + return dw_pcie_read_dbi(pci, base, PCIE_PHY_DEBUG_R1, 0x4) & PCIE_PHY_DEBUG_R1_XMLH_LINK_UP; } diff --git a/drivers/pci/dwc/pci-keystone-dw.c b/drivers/pci/dwc/pci-keystone-dw.c index 7220c04..8318efe 100644 --- a/drivers/pci/dwc/pci-keystone-dw.c +++ b/drivers/pci/dwc/pci-keystone-dw.c @@ -386,8 +386,8 @@ void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie) /* Disable BARs for inbound access */ ks_dw_pcie_set_dbi_mode(ks_pcie); - dw_pcie_writel_dbi(pci, base, PCI_BASE_ADDRESS_0, 0); - dw_pcie_writel_dbi(pci, base, PCI_BASE_ADDRESS_1, 0); + dw_pcie_write_dbi(pci, base, PCI_BASE_ADDRESS_0, 0x4, 0); + dw_pcie_write_dbi(pci, base, PCI_BASE_ADDRESS_1, 0x4, 0); ks_dw_pcie_clear_dbi_mode(ks_pcie); /* Set outbound translation size per window division */ @@ -490,8 +490,8 @@ void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp) ks_dw_pcie_set_dbi_mode(ks_pcie); /* Enable BAR0 */ - dw_pcie_writel_dbi(pci, base, PCI_BASE_ADDRESS_0, 1); - dw_pcie_writel_dbi(pci, base, PCI_BASE_ADDRESS_0, SZ_4K - 1); + dw_pcie_write_dbi(pci, base, PCI_BASE_ADDRESS_0, 0x4, 1); + dw_pcie_write_dbi(pci, base, PCI_BASE_ADDRESS_0, 0x4, SZ_4K - 1); ks_dw_pcie_clear_dbi_mode(ks_pcie); @@ -499,7 +499,8 @@ void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp) * For BAR0, just setting bus address for inbound writes (MSI) should * be sufficient. Use physical address to avoid any conflicts. */ - dw_pcie_writel_dbi(pci, base, PCI_BASE_ADDRESS_0, ks_pcie->app.start); + dw_pcie_write_dbi(pci, base, PCI_BASE_ADDRESS_0, 0x4, + ks_pcie->app.start); } /** @@ -510,7 +511,7 @@ int ks_dw_pcie_link_up(struct dw_pcie *pci) u32 val; void __iomem *base = pci->dbi_base; - val = dw_pcie_readl_dbi(pci, base, DEBUG0); + val = dw_pcie_read_dbi(pci, base, DEBUG0, 0x4); return (val & LTSSM_STATE_MASK) == LTSSM_STATE_L0; } diff --git a/drivers/pci/dwc/pcie-armada8k.c b/drivers/pci/dwc/pcie-armada8k.c index b2328df..447d178 100644 --- a/drivers/pci/dwc/pcie-armada8k.c +++ b/drivers/pci/dwc/pcie-armada8k.c @@ -75,7 +75,7 @@ static int armada8k_pcie_link_up(struct dw_pcie *pci) u32 mask = PCIE_GLB_STS_RDLH_LINK_UP | PCIE_GLB_STS_PHY_LINK_UP; void __iomem *base = pci->dbi_base; - reg = dw_pcie_readl_dbi(pci, base, PCIE_GLOBAL_STATUS_REG); + reg = dw_pcie_read_dbi(pci, base, PCIE_GLOBAL_STATUS_REG, 0x4); if ((reg & mask) == mask) return 1; @@ -92,45 +92,45 @@ static void armada8k_pcie_establish_link(struct armada8k_pcie *pcie) if (!dw_pcie_link_up(pci)) { /* Disable LTSSM state machine to enable configuration */ - reg = dw_pcie_readl_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG); + reg = dw_pcie_read_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, 0x4); reg &= ~(PCIE_APP_LTSSM_EN); - dw_pcie_writel_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, reg); + dw_pcie_write_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, 0x4, reg); } /* Set the device to root complex mode */ - reg = dw_pcie_readl_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG); + reg = dw_pcie_read_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, 0x4); reg &= ~(PCIE_DEVICE_TYPE_MASK << PCIE_DEVICE_TYPE_SHIFT); reg |= PCIE_DEVICE_TYPE_RC << PCIE_DEVICE_TYPE_SHIFT; - dw_pcie_writel_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, reg); + dw_pcie_write_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, 0x4, reg); /* Set the PCIe master AxCache attributes */ - dw_pcie_writel_dbi(pci, base, PCIE_ARCACHE_TRC_REG, - ARCACHE_DEFAULT_VALUE); - dw_pcie_writel_dbi(pci, base, PCIE_AWCACHE_TRC_REG, - AWCACHE_DEFAULT_VALUE); + dw_pcie_write_dbi(pci, base, PCIE_ARCACHE_TRC_REG, 0x4, + ARCACHE_DEFAULT_VALUE); + dw_pcie_write_dbi(pci, base, PCIE_AWCACHE_TRC_REG, 0x4, + AWCACHE_DEFAULT_VALUE); /* Set the PCIe master AxDomain attributes */ - reg = dw_pcie_readl_dbi(pci, base, PCIE_ARUSER_REG); + reg = dw_pcie_read_dbi(pci, base, PCIE_ARUSER_REG, 0x4); reg &= ~(AX_USER_DOMAIN_MASK << AX_USER_DOMAIN_SHIFT); reg |= DOMAIN_OUTER_SHAREABLE << AX_USER_DOMAIN_SHIFT; - dw_pcie_writel_dbi(pci, base, PCIE_ARUSER_REG, reg); + dw_pcie_write_dbi(pci, base, PCIE_ARUSER_REG, 0x4, reg); - reg = dw_pcie_readl_dbi(pci, base, PCIE_AWUSER_REG); + reg = dw_pcie_read_dbi(pci, base, PCIE_AWUSER_REG, 0x4); reg &= ~(AX_USER_DOMAIN_MASK << AX_USER_DOMAIN_SHIFT); reg |= DOMAIN_OUTER_SHAREABLE << AX_USER_DOMAIN_SHIFT; - dw_pcie_writel_dbi(pci, base, PCIE_AWUSER_REG, reg); + dw_pcie_write_dbi(pci, base, PCIE_AWUSER_REG, 0x4, reg); /* Enable INT A-D interrupts */ - reg = dw_pcie_readl_dbi(pci, base, PCIE_GLOBAL_INT_MASK1_REG); + reg = dw_pcie_read_dbi(pci, base, PCIE_GLOBAL_INT_MASK1_REG, 0x4); reg |= PCIE_INT_A_ASSERT_MASK | PCIE_INT_B_ASSERT_MASK | PCIE_INT_C_ASSERT_MASK | PCIE_INT_D_ASSERT_MASK; - dw_pcie_writel_dbi(pci, base, PCIE_GLOBAL_INT_MASK1_REG, reg); + dw_pcie_write_dbi(pci, base, PCIE_GLOBAL_INT_MASK1_REG, 0x4, reg); if (!dw_pcie_link_up(pci)) { /* Configuration done. Start LTSSM */ - reg = dw_pcie_readl_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG); + reg = dw_pcie_read_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, 0x4); reg |= PCIE_APP_LTSSM_EN; - dw_pcie_writel_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, reg); + dw_pcie_write_dbi(pci, base, PCIE_GLOBAL_CONTROL_REG, 0x4, reg); } /* Wait until the link becomes active again */ @@ -159,8 +159,8 @@ static irqreturn_t armada8k_pcie_irq_handler(int irq, void *arg) * PCI device. However, they are also latched into the PCIe * controller, so we simply discard them. */ - val = dw_pcie_readl_dbi(pci, base, PCIE_GLOBAL_INT_CAUSE1_REG); - dw_pcie_writel_dbi(pci, base, PCIE_GLOBAL_INT_CAUSE1_REG, val); + val = dw_pcie_read_dbi(pci, base, PCIE_GLOBAL_INT_CAUSE1_REG, 0x4); + dw_pcie_write_dbi(pci, base, PCIE_GLOBAL_INT_CAUSE1_REG, 0x4, val); return IRQ_HANDLED; } diff --git a/drivers/pci/dwc/pcie-artpec6.c b/drivers/pci/dwc/pcie-artpec6.c index e3ba11c..0829de4 100644 --- a/drivers/pci/dwc/pcie-artpec6.c +++ b/drivers/pci/dwc/pcie-artpec6.c @@ -146,7 +146,7 @@ static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie) * Enable writing to config regs. This is required as the Synopsys * driver changes the class code. That register needs DBI write enable. */ - dw_pcie_writel_dbi(pci, base, MISC_CONTROL_1_OFF, DBI_RO_WR_EN); + dw_pcie_write_dbi(pci, base, MISC_CONTROL_1_OFF, 0x4, DBI_RO_WR_EN); /* setup root complex */ dw_pcie_setup_rc(pp); @@ -161,8 +161,8 @@ static int artpec6_pcie_establish_link(struct artpec6_pcie *artpec6_pcie) return 0; dev_dbg(pci->dev, "DEBUG_R0: 0x%08x, DEBUG_R1: 0x%08x\n", - dw_pcie_readl_dbi(pci, base, PCIE_PHY_DEBUG_R0), - dw_pcie_readl_dbi(pci, base, PCIE_PHY_DEBUG_R1)); + dw_pcie_read_dbi(pci, base, PCIE_PHY_DEBUG_R0, 0x4), + dw_pcie_read_dbi(pci, base, PCIE_PHY_DEBUG_R1, 0x4)); return -ETIMEDOUT; } diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/dwc/pcie-designware-host.c index 9df620d..3150d33 100644 --- a/drivers/pci/dwc/pcie-designware-host.c +++ b/drivers/pci/dwc/pcie-designware-host.c @@ -568,7 +568,7 @@ static u8 dw_pcie_iatu_unroll_enabled(struct dw_pcie *pci) u32 val; void __iomem *base = pci->dbi_base; - val = dw_pcie_readl_dbi(pci, base, PCIE_ATU_VIEWPORT); + val = dw_pcie_read_dbi(pci, base, PCIE_ATU_VIEWPORT, 0x4); if (val == 0xffffffff) return 1; @@ -584,27 +584,27 @@ void dw_pcie_setup_rc(struct pcie_port *pp) dw_pcie_setup(pci); /* setup RC BARs */ - dw_pcie_writel_dbi(pci, base, PCI_BASE_ADDRESS_0, 0x00000004); - dw_pcie_writel_dbi(pci, base, PCI_BASE_ADDRESS_1, 0x00000000); + dw_pcie_write_dbi(pci, base, PCI_BASE_ADDRESS_0, 0x4, 0x00000004); + dw_pcie_write_dbi(pci, base, PCI_BASE_ADDRESS_1, 0x4, 0x00000000); /* setup interrupt pins */ - val = dw_pcie_readl_dbi(pci, base, PCI_INTERRUPT_LINE); + val = dw_pcie_read_dbi(pci, base, PCI_INTERRUPT_LINE, 0x4); val &= 0xffff00ff; val |= 0x00000100; - dw_pcie_writel_dbi(pci, base, PCI_INTERRUPT_LINE, val); + dw_pcie_write_dbi(pci, base, PCI_INTERRUPT_LINE, 0x4, val); /* setup bus numbers */ - val = dw_pcie_readl_dbi(pci, base, PCI_PRIMARY_BUS); + val = dw_pcie_read_dbi(pci, base, PCI_PRIMARY_BUS, 0x4); val &= 0xff000000; val |= 0x00010100; - dw_pcie_writel_dbi(pci, base, PCI_PRIMARY_BUS, val); + dw_pcie_write_dbi(pci, base, PCI_PRIMARY_BUS, 0x4, val); /* setup command register */ - val = dw_pcie_readl_dbi(pci, base, PCI_COMMAND); + val = dw_pcie_read_dbi(pci, base, PCI_COMMAND, 0x4); val &= 0xffff0000; val |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_SERR; - dw_pcie_writel_dbi(pci, base, PCI_COMMAND, val); + dw_pcie_write_dbi(pci, base, PCI_COMMAND, 0x4, val); /* * If the platform provides ->rd_other_conf, it means the platform diff --git a/drivers/pci/dwc/pcie-designware.c b/drivers/pci/dwc/pcie-designware.c index f8eaeea..557ee53 100644 --- a/drivers/pci/dwc/pcie-designware.c +++ b/drivers/pci/dwc/pcie-designware.c @@ -61,21 +61,35 @@ int dw_pcie_write(void __iomem *addr, int size, u32 val) return PCIBIOS_SUCCESSFUL; } -u32 dw_pcie_readl_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg) +u32 dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, + size_t size) { - if (pci->ops->readl_dbi) - return pci->ops->readl_dbi(pci, base, reg); + int ret; + u32 val; + + if (pci->ops->read_dbi) + return pci->ops->read_dbi(pci, base, reg, size); - return readl(base + reg); + ret = dw_pcie_read(base + reg, size, &val); + if (ret) + dev_err(pci->dev, "read DBI address failed\n"); + + return val; } -void dw_pcie_writel_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, - u32 val) +void dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, + size_t size, u32 val) { - if (pci->ops->writel_dbi) - pci->ops->writel_dbi(pci, base, reg, val); - else - writel(val, base + reg); + int ret; + + if (pci->ops->write_dbi) { + pci->ops->write_dbi(pci, base, reg, size, val); + return; + } + + ret = dw_pcie_write(base + reg, size, val); + if (ret) + dev_err(pci->dev, "write DBI address failed\n"); } static u32 dw_pcie_readl_unroll(struct dw_pcie *pci, void __iomem *base, @@ -83,7 +97,7 @@ static u32 dw_pcie_readl_unroll(struct dw_pcie *pci, void __iomem *base, { u32 offset = PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(index); - return dw_pcie_readl_dbi(pci, base, offset + reg); + return dw_pcie_read_dbi(pci, base, offset + reg, 0x4); } static void dw_pcie_writel_unroll(struct dw_pcie *pci, void __iomem *base, @@ -91,7 +105,7 @@ static void dw_pcie_writel_unroll(struct dw_pcie *pci, void __iomem *base, { u32 offset = PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(index); - dw_pcie_writel_dbi(pci, base, offset + reg, val); + dw_pcie_write_dbi(pci, base, offset + reg, 0x4, val); } void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, @@ -123,20 +137,21 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, PCIE_ATU_UNR_REGION_CTRL2, PCIE_ATU_ENABLE); } else { - dw_pcie_writel_dbi(pci, base, PCIE_ATU_VIEWPORT, - PCIE_ATU_REGION_OUTBOUND | index); - dw_pcie_writel_dbi(pci, base, PCIE_ATU_LOWER_BASE, - lower_32_bits(cpu_addr)); - dw_pcie_writel_dbi(pci, base, PCIE_ATU_UPPER_BASE, - upper_32_bits(cpu_addr)); - dw_pcie_writel_dbi(pci, base, PCIE_ATU_LIMIT, - lower_32_bits(cpu_addr + size - 1)); - dw_pcie_writel_dbi(pci, base, PCIE_ATU_LOWER_TARGET, - lower_32_bits(pci_addr)); - dw_pcie_writel_dbi(pci, base, PCIE_ATU_UPPER_TARGET, - upper_32_bits(pci_addr)); - dw_pcie_writel_dbi(pci, base, PCIE_ATU_CR1, type); - dw_pcie_writel_dbi(pci, base, PCIE_ATU_CR2, PCIE_ATU_ENABLE); + dw_pcie_write_dbi(pci, base, PCIE_ATU_VIEWPORT, 0x4, + PCIE_ATU_REGION_OUTBOUND | index); + dw_pcie_write_dbi(pci, base, PCIE_ATU_LOWER_BASE, 0x4, + lower_32_bits(cpu_addr)); + dw_pcie_write_dbi(pci, base, PCIE_ATU_UPPER_BASE, 0x4, + upper_32_bits(cpu_addr)); + dw_pcie_write_dbi(pci, base, PCIE_ATU_LIMIT, 0x4, + lower_32_bits(cpu_addr + size - 1)); + dw_pcie_write_dbi(pci, base, PCIE_ATU_LOWER_TARGET, 0x4, + lower_32_bits(pci_addr)); + dw_pcie_write_dbi(pci, base, PCIE_ATU_UPPER_TARGET, 0x4, + upper_32_bits(pci_addr)); + dw_pcie_write_dbi(pci, base, PCIE_ATU_CR1, 0x4, type); + dw_pcie_write_dbi(pci, base, PCIE_ATU_CR2, 0x4, + PCIE_ATU_ENABLE); } /* @@ -148,7 +163,7 @@ void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type, val = dw_pcie_readl_unroll(pci, base, index, PCIE_ATU_UNR_REGION_CTRL2); else - val = dw_pcie_readl_dbi(pci, base, PCIE_ATU_CR2); + val = dw_pcie_read_dbi(pci, base, PCIE_ATU_CR2, 0x4); if (val == PCIE_ATU_ENABLE) return; @@ -202,7 +217,7 @@ void dw_pcie_setup(struct dw_pcie *pci) lanes = 0; /* set the number of lanes */ - val = dw_pcie_readl_dbi(pci, base, PCIE_PORT_LINK_CONTROL); + val = dw_pcie_read_dbi(pci, base, PCIE_PORT_LINK_CONTROL, 0x4); val &= ~PORT_LINK_MODE_MASK; switch (lanes) { case 1: @@ -221,10 +236,10 @@ void dw_pcie_setup(struct dw_pcie *pci) dev_err(pci->dev, "num-lanes %u: invalid value\n", lanes); return; } - dw_pcie_writel_dbi(pci, base, PCIE_PORT_LINK_CONTROL, val); + dw_pcie_write_dbi(pci, base, PCIE_PORT_LINK_CONTROL, 0x4, val); /* set link width speed control register */ - val = dw_pcie_readl_dbi(pci, base, PCIE_LINK_WIDTH_SPEED_CONTROL); + val = dw_pcie_read_dbi(pci, base, PCIE_LINK_WIDTH_SPEED_CONTROL, 0x4); val &= ~PORT_LOGIC_LINK_WIDTH_MASK; switch (lanes) { case 1: @@ -240,5 +255,5 @@ void dw_pcie_setup(struct dw_pcie *pci) val |= PORT_LOGIC_LINK_WIDTH_8_LANES; break; } - dw_pcie_writel_dbi(pci, base, PCIE_LINK_WIDTH_SPEED_CONTROL, val); + dw_pcie_write_dbi(pci, base, PCIE_LINK_WIDTH_SPEED_CONTROL, 0x4, val); } diff --git a/drivers/pci/dwc/pcie-designware.h b/drivers/pci/dwc/pcie-designware.h index fe93f7f..74df063 100644 --- a/drivers/pci/dwc/pcie-designware.h +++ b/drivers/pci/dwc/pcie-designware.h @@ -144,9 +144,10 @@ struct pcie_port { struct dw_pcie_ops { u64 (*cpu_addr_fixup)(u64 cpu_addr); - u32 (*readl_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg); - void (*writel_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, - u32 val); + u32 (*read_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, + size_t size); + void (*write_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, + size_t size, u32 val); int (*link_up)(struct dw_pcie *pcie); }; @@ -164,9 +165,10 @@ 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_readl_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg); -void dw_pcie_writel_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, - 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); 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, diff --git a/drivers/pci/dwc/pcie-hisi.c b/drivers/pci/dwc/pcie-hisi.c index 409b54b..cc04381 100644 --- a/drivers/pci/dwc/pcie-hisi.c +++ b/drivers/pci/dwc/pcie-hisi.c @@ -156,7 +156,7 @@ static int hisi_pcie_cfg_read(struct pcie_port *pp, int where, int size, walker += (where & 0x3); reg = where & ~0x3; - reg_val = dw_pcie_readl_dbi(pci, base, reg); + reg_val = dw_pcie_read_dbi(pci, base, reg, 0x4); if (size == 1) *val = *(u8 __force *) walker; @@ -183,15 +183,15 @@ static int hisi_pcie_cfg_write(struct pcie_port *pp, int where, int size, walker += (where & 0x3); reg = where & ~0x3; if (size == 4) - dw_pcie_writel_dbi(pci, base, reg, val); + dw_pcie_write_dbi(pci, base, reg, 0x4, val); else if (size == 2) { - reg_val = dw_pcie_readl_dbi(pci, base, reg); + reg_val = dw_pcie_read_dbi(pci, base, reg, 0x4); *(u16 __force *) walker = val; - dw_pcie_writel_dbi(pci, base, reg, reg_val); + dw_pcie_write_dbi(pci, base, reg, 0x4, reg_val); } else if (size == 1) { - reg_val = dw_pcie_readl_dbi(pci, base, reg); + reg_val = dw_pcie_read_dbi(pci, base, reg, 0x4); *(u8 __force *) walker = val; - dw_pcie_writel_dbi(pci, base, reg, reg_val); + dw_pcie_write_dbi(pci, base, reg, 0x4, reg_val); } else return PCIBIOS_BAD_REGISTER_NUMBER; @@ -214,7 +214,7 @@ static int hisi_pcie_link_up_hip06(struct hisi_pcie *hisi_pcie) void __iomem *base = pci->dbi_base; u32 val; - val = dw_pcie_readl_dbi(pci, base, PCIE_SYS_STATE4); + val = dw_pcie_read_dbi(pci, base, PCIE_SYS_STATE4, 0x4); return ((val & PCIE_LTSSM_STATE_MASK) == PCIE_LTSSM_LINKUP_STATE); }

[v3,5/7] PCI: dwc: all: Modify dbi accessors to access data of 4/2/1 bytes

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Patch