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Message-Id: <20231201161712.1645987-4-Frank.Li@nxp.com>
Date: Fri, 1 Dec 2023 11:17:11 -0500
From: Frank Li <Frank.Li@....com>
To: manivannan.sadhasivam@...aro.org
Cc: Frank.Li@....com, bhelgaas@...gle.com, imx@...ts.linux.dev,
kw@...ux.com, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, lpieralisi@...nel.org,
minghuan.Lian@....com, mingkai.hu@....com, robh@...nel.org,
roy.zang@....com
Subject: [PATCH v5 3/4] PCI: layerscape(ep): Rename pf_* as pf_lut_*
'pf' and 'lut' is just difference name in difference chips, but basic it is
a MMIO base address plus an offset.
Rename it to avoid duplicate pf_* and lut_* in driver.
Signed-off-by: Frank Li <Frank.Li@....com>
---
Notes:
pf_lut is better than pf_* or lut* because some chip use 'pf', some chip
use 'lut'.
Change from v4 to v5
- rename layerscape-ep code also
change from v1 to v4
- new patch at v3
.../pci/controller/dwc/pci-layerscape-ep.c | 16 ++++-----
drivers/pci/controller/dwc/pci-layerscape.c | 36 +++++++++----------
2 files changed, 26 insertions(+), 26 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index 3d3c50ef4b6ff..2ca339f938a86 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -49,7 +49,7 @@ struct ls_pcie_ep {
bool big_endian;
};
-static u32 ls_lut_readl(struct ls_pcie_ep *pcie, u32 offset)
+static u32 ls_pcie_pf_lut_readl(struct ls_pcie_ep *pcie, u32 offset)
{
struct dw_pcie *pci = pcie->pci;
@@ -59,7 +59,7 @@ static u32 ls_lut_readl(struct ls_pcie_ep *pcie, u32 offset)
return ioread32(pci->dbi_base + offset);
}
-static void ls_lut_writel(struct ls_pcie_ep *pcie, u32 offset, u32 value)
+static void ls_pcie_pf_lut_writel(struct ls_pcie_ep *pcie, u32 offset, u32 value)
{
struct dw_pcie *pci = pcie->pci;
@@ -76,8 +76,8 @@ static irqreturn_t ls_pcie_ep_event_handler(int irq, void *dev_id)
u32 val, cfg;
u8 offset;
- val = ls_lut_readl(pcie, PEX_PF0_PME_MES_DR);
- ls_lut_writel(pcie, PEX_PF0_PME_MES_DR, val);
+ val = ls_pcie_pf_lut_readl(pcie, PEX_PF0_PME_MES_DR);
+ ls_pcie_pf_lut_writel(pcie, PEX_PF0_PME_MES_DR, val);
if (!val)
return IRQ_NONE;
@@ -96,9 +96,9 @@ static irqreturn_t ls_pcie_ep_event_handler(int irq, void *dev_id)
dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCAP, pcie->lnkcap);
dw_pcie_dbi_ro_wr_dis(pci);
- cfg = ls_lut_readl(pcie, PEX_PF0_CONFIG);
+ cfg = ls_pcie_pf_lut_readl(pcie, PEX_PF0_CONFIG);
cfg |= PEX_PF0_CFG_READY;
- ls_lut_writel(pcie, PEX_PF0_CONFIG, cfg);
+ ls_pcie_pf_lut_writel(pcie, PEX_PF0_CONFIG, cfg);
dw_pcie_ep_linkup(&pci->ep);
dev_dbg(pci->dev, "Link up\n");
@@ -130,10 +130,10 @@ static int ls_pcie_ep_interrupt_init(struct ls_pcie_ep *pcie,
}
/* Enable interrupts */
- val = ls_lut_readl(pcie, PEX_PF0_PME_MES_IER);
+ val = ls_pcie_pf_lut_readl(pcie, PEX_PF0_PME_MES_IER);
val |= PEX_PF0_PME_MES_IER_LDDIE | PEX_PF0_PME_MES_IER_HRDIE |
PEX_PF0_PME_MES_IER_LUDIE;
- ls_lut_writel(pcie, PEX_PF0_PME_MES_IER, val);
+ ls_pcie_pf_lut_writel(pcie, PEX_PF0_PME_MES_IER, val);
return 0;
}
diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c
index 8bdaae9be7d56..a9151e98fde6f 100644
--- a/drivers/pci/controller/dwc/pci-layerscape.c
+++ b/drivers/pci/controller/dwc/pci-layerscape.c
@@ -44,7 +44,7 @@
#define PCIE_IATU_NUM 6
struct ls_pcie_drvdata {
- const u32 pf_off;
+ const u32 pf_lut_off;
const struct dw_pcie_host_ops *ops;
int (*exit_from_l2)(struct dw_pcie_rp *pp);
bool scfg_support;
@@ -54,13 +54,13 @@ struct ls_pcie_drvdata {
struct ls_pcie {
struct dw_pcie *pci;
const struct ls_pcie_drvdata *drvdata;
- void __iomem *pf_base;
+ void __iomem *pf_lut_base;
struct regmap *scfg;
int index;
bool big_endian;
};
-#define ls_pcie_pf_readl_addr(addr) ls_pcie_pf_readl(pcie, addr)
+#define ls_pcie_pf_lut_readl_addr(addr) ls_pcie_pf_lut_readl(pcie, addr)
#define to_ls_pcie(x) dev_get_drvdata((x)->dev)
static bool ls_pcie_is_bridge(struct ls_pcie *pcie)
@@ -101,20 +101,20 @@ static void ls_pcie_fix_error_response(struct ls_pcie *pcie)
iowrite32(PCIE_ABSERR_SETTING, pci->dbi_base + PCIE_ABSERR);
}
-static u32 ls_pcie_pf_readl(struct ls_pcie *pcie, u32 off)
+static u32 ls_pcie_pf_lut_readl(struct ls_pcie *pcie, u32 off)
{
if (pcie->big_endian)
- return ioread32be(pcie->pf_base + off);
+ return ioread32be(pcie->pf_lut_base + off);
- return ioread32(pcie->pf_base + off);
+ return ioread32(pcie->pf_lut_base + off);
}
-static void ls_pcie_pf_writel(struct ls_pcie *pcie, u32 off, u32 val)
+static void ls_pcie_pf_lut_writel(struct ls_pcie *pcie, u32 off, u32 val)
{
if (pcie->big_endian)
- iowrite32be(val, pcie->pf_base + off);
+ iowrite32be(val, pcie->pf_lut_base + off);
else
- iowrite32(val, pcie->pf_base + off);
+ iowrite32(val, pcie->pf_lut_base + off);
}
static void ls_pcie_send_turnoff_msg(struct dw_pcie_rp *pp)
@@ -124,11 +124,11 @@ static void ls_pcie_send_turnoff_msg(struct dw_pcie_rp *pp)
u32 val;
int ret;
- val = ls_pcie_pf_readl(pcie, LS_PCIE_PF_MCR);
+ val = ls_pcie_pf_lut_readl(pcie, LS_PCIE_PF_MCR);
val |= PF_MCR_PTOMR;
- ls_pcie_pf_writel(pcie, LS_PCIE_PF_MCR, val);
+ ls_pcie_pf_lut_writel(pcie, LS_PCIE_PF_MCR, val);
- ret = readx_poll_timeout(ls_pcie_pf_readl_addr, LS_PCIE_PF_MCR,
+ ret = readx_poll_timeout(ls_pcie_pf_lut_readl_addr, LS_PCIE_PF_MCR,
val, !(val & PF_MCR_PTOMR),
PCIE_PME_TO_L2_TIMEOUT_US/10,
PCIE_PME_TO_L2_TIMEOUT_US);
@@ -147,15 +147,15 @@ static int ls_pcie_exit_from_l2(struct dw_pcie_rp *pp)
* Set PF_MCR_EXL2S bit in LS_PCIE_PF_MCR register for the link
* to exit L2 state.
*/
- val = ls_pcie_pf_readl(pcie, LS_PCIE_PF_MCR);
+ val = ls_pcie_pf_lut_readl(pcie, LS_PCIE_PF_MCR);
val |= PF_MCR_EXL2S;
- ls_pcie_pf_writel(pcie, LS_PCIE_PF_MCR, val);
+ ls_pcie_pf_lut_writel(pcie, LS_PCIE_PF_MCR, val);
/*
* L2 exit timeout of 10ms is not defined in the specifications,
* it was chosen based on empirical observations.
*/
- ret = readx_poll_timeout(ls_pcie_pf_readl_addr, LS_PCIE_PF_MCR,
+ ret = readx_poll_timeout(ls_pcie_pf_lut_readl_addr, LS_PCIE_PF_MCR,
val, !(val & PF_MCR_EXL2S),
1000,
10000);
@@ -242,9 +242,9 @@ static const struct ls_pcie_drvdata ls1021a_drvdata = {
};
static const struct ls_pcie_drvdata layerscape_drvdata = {
- .pf_off = 0xc0000,
+ .pf_lut_off = 0xc0000,
.pm_support = true,
- .ops = &ls_pcie_host_ops;
+ .ops = &ls_pcie_host_ops,
.exit_from_l2 = ls_pcie_exit_from_l2,
};
@@ -293,7 +293,7 @@ static int ls_pcie_probe(struct platform_device *pdev)
pcie->big_endian = of_property_read_bool(dev->of_node, "big-endian");
- pcie->pf_base = pci->dbi_base + pcie->drvdata->pf_off;
+ pcie->pf_lut_base = pci->dbi_base + pcie->drvdata->pf_lut_off;
if (pcie->drvdata->scfg_support) {
pcie->scfg = syscon_regmap_lookup_by_phandle(dev->of_node, "fsl,pcie-scfg");
--
2.34.1
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